--- /dev/null
+CONFIG_ADVISE_SYSCALLS=y
+# CONFIG_AHCI_SUNXI is not set
+CONFIG_ALIGNMENT_TRAP=y
+# CONFIG_APM_EMULATION is not set
+CONFIG_ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE=y
+CONFIG_ARCH_HAS_RESET_CONTROLLER=y
+CONFIG_ARCH_HAS_SG_CHAIN=y
+CONFIG_ARCH_HAS_TICK_BROADCAST=y
+CONFIG_ARCH_HAVE_CUSTOM_GPIO_H=y
+CONFIG_ARCH_HIBERNATION_POSSIBLE=y
+CONFIG_ARCH_MIGHT_HAVE_PC_PARPORT=y
+CONFIG_ARCH_MULTIPLATFORM=y
+# CONFIG_ARCH_MULTI_CPU_AUTO is not set
+CONFIG_ARCH_MULTI_V6_V7=y
+CONFIG_ARCH_MULTI_V7=y
+CONFIG_ARCH_NR_GPIO=416
+CONFIG_ARCH_REQUIRE_GPIOLIB=y
+# CONFIG_ARCH_SELECT_MEMORY_MODEL is not set
+# CONFIG_ARCH_SPARSEMEM_DEFAULT is not set
+CONFIG_ARCH_SUNXI=y
+CONFIG_ARCH_SUPPORTS_ATOMIC_RMW=y
+CONFIG_ARCH_SUPPORTS_UPROBES=y
+CONFIG_ARCH_SUSPEND_POSSIBLE=y
+CONFIG_ARCH_USE_BUILTIN_BSWAP=y
+CONFIG_ARCH_USE_CMPXCHG_LOCKREF=y
+CONFIG_ARCH_WANT_GENERAL_HUGETLB=y
+CONFIG_ARCH_WANT_IPC_PARSE_VERSION=y
+CONFIG_ARCH_WANT_OPTIONAL_GPIOLIB=y
+CONFIG_ARM=y
+CONFIG_ARM_APPENDED_DTB=y
+CONFIG_ARM_ARCH_TIMER=y
+CONFIG_ARM_ARCH_TIMER_EVTSTREAM=y
+CONFIG_ARM_ATAG_DTB_COMPAT=y
+# CONFIG_ARM_ATAG_DTB_COMPAT_CMDLINE_EXTEND is not set
+CONFIG_ARM_ATAG_DTB_COMPAT_CMDLINE_FROM_BOOTLOADER=y
+CONFIG_ARM_CPU_SUSPEND=y
+CONFIG_ARM_CRYPTO=y
+CONFIG_ARM_GIC=y
+CONFIG_ARM_HAS_SG_CHAIN=y
+CONFIG_ARM_L1_CACHE_SHIFT=6
+CONFIG_ARM_L1_CACHE_SHIFT_6=y
+# CONFIG_ARM_LPAE is not set
+CONFIG_ARM_PATCH_PHYS_VIRT=y
+CONFIG_ARM_PSCI=y
+CONFIG_ARM_THUMB=y
+# CONFIG_ARM_THUMBEE is not set
+CONFIG_ARM_UNWIND=y
+CONFIG_ARM_VIRT_EXT=y
+CONFIG_ATA=y
+CONFIG_ATAGS=y
+# CONFIG_ATA_SFF is not set
+CONFIG_AUDIT=y
+# CONFIG_AUDITSYSCALL is not set
+CONFIG_AUDIT_GENERIC=y
+CONFIG_AUTO_ZRELADDR=y
+CONFIG_AVERAGE=y
+CONFIG_B53=y
+# CONFIG_B53_MMAP_DRIVER is not set
+CONFIG_B53_PHY_DRIVER=y
+CONFIG_B53_PHY_FIXUP=y
+# CONFIG_B53_SRAB_DRIVER is not set
+CONFIG_BACKLIGHT_CLASS_DEVICE=y
+CONFIG_BACKLIGHT_GENERIC=y
+CONFIG_BACKLIGHT_LCD_SUPPORT=y
+CONFIG_BACKLIGHT_PWM=y
+CONFIG_BINFMT_MISC=y
+CONFIG_BLK_CGROUP=y
+CONFIG_BLK_DEV_SD=y
+CONFIG_BLK_DEV_SR=y
+CONFIG_BLK_DEV_SR_VENDOR=y
+CONFIG_BOUNCE=y
+# CONFIG_BPF_SYSCALL is not set
+CONFIG_BUILD_BIN2C=y
+CONFIG_CACHE_L2X0=y
+CONFIG_CFQ_GROUP_IOSCHED=y
+CONFIG_CGROUPS=y
+CONFIG_CGROUP_CPUACCT=y
+CONFIG_CGROUP_DEVICE=y
+CONFIG_CGROUP_FREEZER=y
+# CONFIG_CGROUP_NET_CLASSID is not set
+# CONFIG_CGROUP_PERF is not set
+# CONFIG_CGROUP_SCHED is not set
+CONFIG_CLKDEV_LOOKUP=y
+CONFIG_CLKSRC_MMIO=y
+CONFIG_CLKSRC_OF=y
+CONFIG_CLONE_BACKWARDS=y
+CONFIG_CMDLINE="console=ttyS0,115200 earlyprintk rootwait root=/dev/mmcblk0p2"
+CONFIG_CMDLINE_FORCE=y
+CONFIG_COMMON_CLK=y
+CONFIG_COMPACTION=y
+CONFIG_CONFIGFS_FS=y
+CONFIG_CONNECTOR=y
+CONFIG_CONSOLE_TRANSLATIONS=y
+CONFIG_COREDUMP=y
+CONFIG_CORE_DUMP_DEFAULT_ELF_HEADERS=y
+CONFIG_CPUFREQ_DT=y
+CONFIG_CPUSETS=y
+CONFIG_CPU_32v6K=y
+CONFIG_CPU_32v7=y
+CONFIG_CPU_ABRT_EV7=y
+# CONFIG_CPU_BPREDICT_DISABLE is not set
+CONFIG_CPU_CACHE_V7=y
+CONFIG_CPU_CACHE_VIPT=y
+CONFIG_CPU_COPY_V6=y
+CONFIG_CPU_CP15=y
+CONFIG_CPU_CP15_MMU=y
+CONFIG_CPU_FREQ=y
+# CONFIG_CPU_FREQ_DEFAULT_GOV_CONSERVATIVE is not set
+# CONFIG_CPU_FREQ_DEFAULT_GOV_ONDEMAND is not set
+CONFIG_CPU_FREQ_DEFAULT_GOV_PERFORMANCE=y
+# CONFIG_CPU_FREQ_DEFAULT_GOV_POWERSAVE is not set
+# CONFIG_CPU_FREQ_DEFAULT_GOV_USERSPACE is not set
+CONFIG_CPU_FREQ_GOV_COMMON=y
+CONFIG_CPU_FREQ_GOV_CONSERVATIVE=y
+CONFIG_CPU_FREQ_GOV_ONDEMAND=y
+CONFIG_CPU_FREQ_GOV_PERFORMANCE=y
+CONFIG_CPU_FREQ_GOV_POWERSAVE=y
+CONFIG_CPU_FREQ_GOV_USERSPACE=y
+CONFIG_CPU_FREQ_STAT=y
+# CONFIG_CPU_FREQ_STAT_DETAILS is not set
+CONFIG_CPU_HAS_ASID=y
+# CONFIG_CPU_ICACHE_DISABLE is not set
+CONFIG_CPU_PABRT_V7=y
+CONFIG_CPU_PM=y
+CONFIG_CPU_RMAP=y
+CONFIG_CPU_THERMAL=y
+CONFIG_CPU_TLB_V7=y
+CONFIG_CPU_V7=y
+CONFIG_CRC16=y
+CONFIG_CRC_T10DIF=y
+CONFIG_CRYPTO_ABLK_HELPER=y
+CONFIG_CRYPTO_AEAD=y
+CONFIG_CRYPTO_AEAD2=y
+CONFIG_CRYPTO_AES_ARM=y
+CONFIG_CRYPTO_AES_ARM_CE=y
+CONFIG_CRYPTO_ARC4=y
+CONFIG_CRYPTO_BLKCIPHER=y
+CONFIG_CRYPTO_BLKCIPHER2=y
+CONFIG_CRYPTO_CRC32C=y
+CONFIG_CRYPTO_CRCT10DIF=y
+CONFIG_CRYPTO_CRYPTD=y
+CONFIG_CRYPTO_DES=y
+CONFIG_CRYPTO_DEV_SUN4I_SS=y
+CONFIG_CRYPTO_GHASH_ARM_CE=y
+CONFIG_CRYPTO_HASH=y
+CONFIG_CRYPTO_HASH2=y
+CONFIG_CRYPTO_HW=y
+CONFIG_CRYPTO_MANAGER=y
+CONFIG_CRYPTO_MANAGER2=y
+CONFIG_CRYPTO_MD5=y
+CONFIG_CRYPTO_RNG2=y
+CONFIG_CRYPTO_SHA1=y
+CONFIG_CRYPTO_SHA1_ARM=y
+CONFIG_CRYPTO_SHA1_ARM_CE=y
+CONFIG_CRYPTO_SHA1_ARM_NEON=y
+CONFIG_CRYPTO_SHA256_ARM=y
+CONFIG_CRYPTO_SHA2_ARM_CE=y
+CONFIG_CRYPTO_SHA512=y
+CONFIG_CRYPTO_SHA512_ARM_NEON=y
+CONFIG_CRYPTO_WORKQUEUE=y
+CONFIG_DCACHE_WORD_ACCESS=y
+# CONFIG_DEBUG_BLK_CGROUP is not set
+CONFIG_DEBUG_BUGVERBOSE=y
+CONFIG_DEBUG_LL_INCLUDE="mach/debug-macro.S"
+CONFIG_DEBUG_MEMORY_INIT=y
+# CONFIG_DEBUG_UART_8250 is not set
+# CONFIG_DEBUG_USER is not set
+CONFIG_DEFAULT_CFQ=y
+# CONFIG_DEFAULT_DEADLINE is not set
+CONFIG_DEFAULT_IOSCHED="cfq"
+CONFIG_DIRECT_IO=y
+CONFIG_DMADEVICES=y
+CONFIG_DMA_ENGINE=y
+CONFIG_DMA_OF=y
+CONFIG_DMA_SUN6I=y
+CONFIG_DMA_VIRTUAL_CHANNELS=y
+CONFIG_DNOTIFY=y
+CONFIG_DTC=y
+CONFIG_DUMMY_CONSOLE=y
+CONFIG_DYNAMIC_DEBUG=y
+# CONFIG_EEPROM_SUNXI_SID is not set
+CONFIG_ELF_CORE=y
+# CONFIG_EMBEDDED is not set
+CONFIG_ENABLE_MUST_CHECK=y
+# CONFIG_ENABLE_WARN_DEPRECATED is not set
+CONFIG_EXT4_FS=y
+CONFIG_FB=y
+# CONFIG_FB_BIG_ENDIAN is not set
+CONFIG_FB_BOTH_ENDIAN=y
+CONFIG_FB_CFB_COPYAREA=y
+CONFIG_FB_CFB_FILLRECT=y
+CONFIG_FB_CFB_IMAGEBLIT=y
+CONFIG_FB_CMDLINE=y
+CONFIG_FB_FOREIGN_ENDIAN=y
+# CONFIG_FB_LITTLE_ENDIAN is not set
+CONFIG_FB_MODE_HELPERS=y
+CONFIG_FB_SIMPLE=y
+CONFIG_FB_TILEBLITTING=y
+# CONFIG_FONTS is not set
+CONFIG_FONT_8x16=y
+CONFIG_FONT_8x8=y
+CONFIG_FONT_SUPPORT=y
+CONFIG_FRAMEBUFFER_CONSOLE=y
+CONFIG_FRAMEBUFFER_CONSOLE_DETECT_PRIMARY=y
+CONFIG_FRAMEBUFFER_CONSOLE_ROTATION=y
+CONFIG_FRAME_WARN=2048
+CONFIG_FREEZER=y
+CONFIG_FS_MBCACHE=y
+CONFIG_FS_POSIX_ACL=y
+CONFIG_GENERIC_ALLOCATOR=y
+CONFIG_GENERIC_BUG=y
+CONFIG_GENERIC_CLOCKEVENTS=y
+CONFIG_GENERIC_CLOCKEVENTS_BROADCAST=y
+CONFIG_GENERIC_IDLE_POLL_SETUP=y
+CONFIG_GENERIC_IO=y
+CONFIG_GENERIC_IRQ_CHIP=y
+CONFIG_GENERIC_IRQ_SHOW=y
+CONFIG_GENERIC_IRQ_SHOW_LEVEL=y
+CONFIG_GENERIC_PCI_IOMAP=y
+CONFIG_GENERIC_PHY=y
+CONFIG_GENERIC_PINCONF=y
+CONFIG_GENERIC_SCHED_CLOCK=y
+CONFIG_GENERIC_SMP_IDLE_THREAD=y
+CONFIG_GENERIC_STRNCPY_FROM_USER=y
+CONFIG_GENERIC_STRNLEN_USER=y
+CONFIG_GENERIC_TIME_VSYSCALL=y
+CONFIG_GLOB=y
+CONFIG_GPIOLIB=y
+CONFIG_GPIO_DEVRES=y
+CONFIG_GPIO_SYSFS=y
+CONFIG_HANDLE_DOMAIN_IRQ=y
+CONFIG_HARDIRQS_SW_RESEND=y
+CONFIG_HAS_DMA=y
+CONFIG_HAS_IOMEM=y
+CONFIG_HAS_IOPORT_MAP=y
+# CONFIG_HAVE_64BIT_ALIGNED_ACCESS is not set
+CONFIG_HAVE_ARCH_AUDITSYSCALL=y
+CONFIG_HAVE_ARCH_BITREVERSE=y
+CONFIG_HAVE_ARCH_JUMP_LABEL=y
+CONFIG_HAVE_ARCH_KGDB=y
+CONFIG_HAVE_ARCH_PFN_VALID=y
+CONFIG_HAVE_ARCH_SECCOMP_FILTER=y
+CONFIG_HAVE_ARCH_TRACEHOOK=y
+CONFIG_HAVE_ARM_ARCH_TIMER=y
+# CONFIG_HAVE_BOOTMEM_INFO_NODE is not set
+CONFIG_HAVE_BPF_JIT=y
+CONFIG_HAVE_CC_STACKPROTECTOR=y
+CONFIG_HAVE_CLK=y
+CONFIG_HAVE_CLK_PREPARE=y
+CONFIG_HAVE_CONTEXT_TRACKING=y
+CONFIG_HAVE_C_RECORDMCOUNT=y
+CONFIG_HAVE_DEBUG_KMEMLEAK=y
+CONFIG_HAVE_DMA_API_DEBUG=y
+CONFIG_HAVE_DMA_ATTRS=y
+CONFIG_HAVE_DMA_CONTIGUOUS=y
+CONFIG_HAVE_DYNAMIC_FTRACE=y
+CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS=y
+CONFIG_HAVE_FTRACE_MCOUNT_RECORD=y
+CONFIG_HAVE_FUNCTION_GRAPH_TRACER=y
+CONFIG_HAVE_FUNCTION_TRACER=y
+CONFIG_HAVE_GENERIC_DMA_COHERENT=y
+CONFIG_HAVE_HW_BREAKPOINT=y
+CONFIG_HAVE_IRQ_TIME_ACCOUNTING=y
+CONFIG_HAVE_KERNEL_GZIP=y
+CONFIG_HAVE_KERNEL_LZ4=y
+CONFIG_HAVE_KERNEL_LZMA=y
+CONFIG_HAVE_KERNEL_LZO=y
+CONFIG_HAVE_KERNEL_XZ=y
+CONFIG_HAVE_MEMBLOCK=y
+CONFIG_HAVE_MOD_ARCH_SPECIFIC=y
+CONFIG_HAVE_NET_DSA=y
+CONFIG_HAVE_OPROFILE=y
+CONFIG_HAVE_OPTPROBES=y
+CONFIG_HAVE_PERF_EVENTS=y
+CONFIG_HAVE_PERF_REGS=y
+CONFIG_HAVE_PERF_USER_STACK_DUMP=y
+CONFIG_HAVE_PROC_CPU=y
+CONFIG_HAVE_REGS_AND_STACK_ACCESS_API=y
+CONFIG_HAVE_SMP=y
+CONFIG_HAVE_SYSCALL_TRACEPOINTS=y
+CONFIG_HAVE_UID16=y
+CONFIG_HAVE_VIRT_CPU_ACCOUNTING_GEN=y
+CONFIG_HIGHMEM=y
+CONFIG_HIGHPTE=y
+CONFIG_HOTPLUG_CPU=y
+CONFIG_HWMON=y
+CONFIG_HW_CONSOLE=y
+CONFIG_HW_RANDOM=y
+CONFIG_HW_RANDOM_TIMERIOMEM=y
+CONFIG_HZ_FIXED=0
+CONFIG_I2C=y
+CONFIG_I2C_BOARDINFO=y
+CONFIG_I2C_CHARDEV=y
+CONFIG_I2C_COMPAT=y
+CONFIG_I2C_HELPER_AUTO=y
+CONFIG_I2C_MV64XXX=y
+# CONFIG_I2C_SUN6I_P2WI is not set
+CONFIG_IKCONFIG=y
+CONFIG_IKCONFIG_PROC=y
+CONFIG_INITRAMFS_SOURCE=""
+CONFIG_INPUT=y
+CONFIG_INPUT_AXP20X_PEK=y
+CONFIG_INPUT_KEYBOARD=y
+CONFIG_INPUT_MOUSEDEV=y
+CONFIG_INPUT_MOUSEDEV_PSAUX=y
+CONFIG_INPUT_MOUSEDEV_SCREEN_X=1024
+CONFIG_INPUT_MOUSEDEV_SCREEN_Y=768
+CONFIG_INPUT_TOUCHSCREEN=y
+CONFIG_IOMMU_HELPER=y
+CONFIG_IOSCHED_CFQ=y
+CONFIG_IPC_NS=y
+CONFIG_IRQCHIP=y
+CONFIG_IRQ_DOMAIN=y
+CONFIG_IRQ_DOMAIN_HIERARCHY=y
+CONFIG_IRQ_FORCED_THREADING=y
+CONFIG_IRQ_WORK=y
+CONFIG_JBD2=y
+CONFIG_KALLSYMS=y
+CONFIG_KEYBOARD_SUN4I_LRADC=y
+CONFIG_KSM=y
+CONFIG_LCD_CLASS_DEVICE=y
+CONFIG_LCD_PLATFORM=y
+CONFIG_LEDS_GPIO=y
+CONFIG_LEGACY_PTYS=y
+CONFIG_LEGACY_PTY_COUNT=256
+CONFIG_LIBFDT=y
+CONFIG_LOCK_SPIN_ON_OWNER=y
+CONFIG_LOGO=y
+CONFIG_LOGO_LINUX_CLUT224=y
+CONFIG_LOGO_LINUX_MONO=y
+CONFIG_LOGO_LINUX_VGA16=y
+CONFIG_LOG_BUF_SHIFT=19
+CONFIG_LZO_COMPRESS=y
+CONFIG_LZO_DECOMPRESS=y
+CONFIG_MACH_SUN4I=y
+CONFIG_MACH_SUN5I=y
+CONFIG_MACH_SUN6I=y
+CONFIG_MACH_SUN7I=y
+CONFIG_MACH_SUN8I=y
+CONFIG_MACH_SUN9I=y
+CONFIG_MAGIC_SYSRQ=y
+CONFIG_MDIO_BOARDINFO=y
+CONFIG_MDIO_SUN4I=y
+# CONFIG_MEMCG is not set
+CONFIG_MFD_AXP20X=y
+CONFIG_MFD_CORE=y
+CONFIG_MFD_SUN6I_PRCM=y
+CONFIG_MIGHT_HAVE_CACHE_L2X0=y
+CONFIG_MIGHT_HAVE_PCI=y
+CONFIG_MIGRATION=y
+CONFIG_MMC=y
+CONFIG_MMC_BLOCK=y
+# CONFIG_MMC_BLOCK_BOUNCE is not set
+CONFIG_MMC_SUNXI=y
+CONFIG_MODULES_USE_ELF_REL=y
+CONFIG_MTD_NAND=y
+CONFIG_MTD_NAND_ECC=y
+CONFIG_MTD_NAND_SUNXI=y
+CONFIG_MTD_OF_NAND_PARTS=y
+CONFIG_MULTI_IRQ_HANDLER=y
+CONFIG_MUTEX_SPIN_ON_OWNER=y
+CONFIG_NAMESPACES=y
+CONFIG_NEED_DMA_MAP_STATE=y
+CONFIG_NEON=y
+# CONFIG_NET_CLS_CGROUP is not set
+CONFIG_NET_FLOW_LIMIT=y
+CONFIG_NET_NS=y
+CONFIG_NET_PTP_CLASSIFY=y
+CONFIG_NET_VENDOR_ALLWINNER=y
+CONFIG_NLS=y
+CONFIG_NO_BOOTMEM=y
+CONFIG_NO_HZ=y
+CONFIG_NO_HZ_COMMON=y
+CONFIG_NO_HZ_IDLE=y
+CONFIG_NR_CPUS=4
+CONFIG_OF=y
+CONFIG_OF_ADDRESS=y
+CONFIG_OF_EARLY_FLATTREE=y
+CONFIG_OF_FLATTREE=y
+CONFIG_OF_GPIO=y
+CONFIG_OF_IRQ=y
+CONFIG_OF_MDIO=y
+CONFIG_OF_MTD=y
+CONFIG_OF_NET=y
+CONFIG_OF_RESERVED_MEM=y
+CONFIG_OF_TOUCHSCREEN=y
+CONFIG_OLD_SIGACTION=y
+CONFIG_OLD_SIGSUSPEND3=y
+CONFIG_OUTER_CACHE=y
+CONFIG_OUTER_CACHE_SYNC=y
+CONFIG_PAGEFLAGS_EXTENDED=y
+CONFIG_PAGE_OFFSET=0xC0000000
+# CONFIG_PARTITION_ADVANCED is not set
+# CONFIG_PCI is not set
+# CONFIG_PCI_DOMAINS_GENERIC is not set
+# CONFIG_PCI_SYSCALL is not set
+CONFIG_PERF_EVENTS=y
+CONFIG_PERF_USE_VMALLOC=y
+CONFIG_PGTABLE_LEVELS=2
+CONFIG_PHYLIB=y
+CONFIG_PHY_SUN4I_USB=y
+# CONFIG_PHY_SUN9I_USB is not set
+CONFIG_PINCTRL=y
+# CONFIG_PINCTRL_SINGLE is not set
+CONFIG_PINCTRL_SUN4I_A10=y
+CONFIG_PINCTRL_SUN5I_A10S=y
+CONFIG_PINCTRL_SUN5I_A13=y
+CONFIG_PINCTRL_SUN6I_A31=y
+CONFIG_PINCTRL_SUN6I_A31S=y
+CONFIG_PINCTRL_SUN6I_A31_R=y
+CONFIG_PINCTRL_SUN7I_A20=y
+CONFIG_PINCTRL_SUN8I_A23=y
+CONFIG_PINCTRL_SUN8I_A23_R=y
+CONFIG_PINCTRL_SUN9I_A80=y
+CONFIG_PINCTRL_SUNXI_COMMON=y
+# CONFIG_PL310_ERRATA_588369 is not set
+# CONFIG_PL310_ERRATA_727915 is not set
+# CONFIG_PL310_ERRATA_753970 is not set
+# CONFIG_PL310_ERRATA_769419 is not set
+CONFIG_PM=y
+CONFIG_PM_CLK=y
+# CONFIG_PM_DEBUG is not set
+CONFIG_PM_OPP=y
+CONFIG_PM_SLEEP=y
+CONFIG_PM_SLEEP_SMP=y
+CONFIG_POWER_RESET=y
+CONFIG_POWER_SUPPLY=y
+CONFIG_PPS=y
+CONFIG_PREEMPT=y
+CONFIG_PREEMPT_COUNT=y
+# CONFIG_PREEMPT_NONE is not set
+CONFIG_PREEMPT_RCU=y
+CONFIG_PRINTK_TIME=y
+# CONFIG_PRINT_QUOTA_WARNING is not set
+CONFIG_PROC_EVENTS=y
+CONFIG_PROC_PAGE_MONITOR=y
+CONFIG_PROC_PID_CPUSET=y
+CONFIG_PTP_1588_CLOCK=y
+CONFIG_PWM=y
+CONFIG_PWM_SUN4I=y
+CONFIG_PWM_SYSFS=y
+# CONFIG_QFMT_V1 is not set
+# CONFIG_QFMT_V2 is not set
+CONFIG_QUOTA=y
+CONFIG_QUOTACTL=y
+CONFIG_QUOTA_NETLINK_INTERFACE=y
+# CONFIG_RCU_BOOST is not set
+CONFIG_RCU_STALL_COMMON=y
+CONFIG_REGMAP=y
+CONFIG_REGMAP_I2C=y
+CONFIG_REGMAP_IRQ=y
+CONFIG_REGMAP_MMIO=y
+CONFIG_REGMAP_SPI=y
+CONFIG_REGULATOR=y
+CONFIG_REGULATOR_AXP20X=y
+CONFIG_REGULATOR_FIXED_VOLTAGE=y
+CONFIG_REGULATOR_GPIO=y
+CONFIG_RELAY=y
+CONFIG_RESET_CONTROLLER=y
+CONFIG_RWSEM_SPIN_ON_OWNER=y
+CONFIG_RWSEM_XCHGADD_ALGORITHM=y
+CONFIG_SATA_PMP=y
+CONFIG_SCHED_HRTICK=y
+CONFIG_SCSI=y
+CONFIG_SDIO_UART=y
+CONFIG_SECURITYFS=y
+CONFIG_SERIAL_8250_DW=y
+CONFIG_SERIAL_8250_NR_UARTS=8
+CONFIG_SERIAL_8250_RUNTIME_UARTS=8
+CONFIG_SERIAL_OF_PLATFORM=y
+CONFIG_SERIO=y
+CONFIG_SERIO_SERPORT=y
+# CONFIG_SLAB is not set
+CONFIG_SLUB=y
+CONFIG_SLUB_CPU_PARTIAL=y
+CONFIG_SLUB_DEBUG=y
+# CONFIG_SLUB_DEBUG_ON is not set
+CONFIG_SMP=y
+CONFIG_SMP_ON_UP=y
+CONFIG_SPARSE_IRQ=y
+CONFIG_SPI=y
+CONFIG_SPI_MASTER=y
+CONFIG_SPI_SUN4I=y
+CONFIG_SPI_SUN6I=y
+CONFIG_SRCU=y
+# CONFIG_STAGING is not set
+CONFIG_STMMAC_ETH=y
+CONFIG_STMMAC_PLATFORM=y
+CONFIG_STOP_MACHINE=y
+CONFIG_STRICT_DEVMEM=y
+CONFIG_SUN4I_DMA=y
+# CONFIG_SUN4I_EMAC is not set
+CONFIG_SUN4I_TIMER=y
+CONFIG_SUN5I_HSTIMER=y
+CONFIG_SUNXI_WATCHDOG=y
+CONFIG_SUSPEND=y
+CONFIG_SUSPEND_FREEZER=y
+CONFIG_SWCONFIG=y
+CONFIG_SWIOTLB=y
+CONFIG_SWP_EMULATE=y
+CONFIG_SYSFS_SYSCALL=y
+CONFIG_SYS_SUPPORTS_APM_EMULATION=y
+CONFIG_TASKSTATS=y
+CONFIG_TASK_DELAY_ACCT=y
+CONFIG_TASK_IO_ACCOUNTING=y
+CONFIG_TASK_XACCT=y
+CONFIG_THERMAL=y
+# CONFIG_THERMAL_DEFAULT_GOV_FAIR_SHARE is not set
+CONFIG_THERMAL_DEFAULT_GOV_STEP_WISE=y
+# CONFIG_THERMAL_DEFAULT_GOV_USER_SPACE is not set
+# CONFIG_THERMAL_EMULATION is not set
+# CONFIG_THERMAL_GOV_FAIR_SHARE is not set
+CONFIG_THERMAL_GOV_STEP_WISE=y
+# CONFIG_THERMAL_GOV_USER_SPACE is not set
+CONFIG_THERMAL_HWMON=y
+CONFIG_THERMAL_OF=y
+# CONFIG_THUMB2_KERNEL is not set
+CONFIG_TICK_CPU_ACCOUNTING=y
+CONFIG_TMPFS_POSIX_ACL=y
+CONFIG_TOUCHSCREEN_SUN4I=y
+CONFIG_UEVENT_HELPER_PATH=""
+CONFIG_UID16=y
+CONFIG_UNCOMPRESS_INCLUDE="debug/uncompress.h"
+CONFIG_UNINLINE_SPIN_UNLOCK=y
+CONFIG_USB=y
+CONFIG_USB_ANNOUNCE_NEW_DEVICES=y
+CONFIG_USB_COMMON=y
+CONFIG_USB_DWC2=y
+# CONFIG_USB_DWC2_DEBUG is not set
+CONFIG_USB_DWC2_HOST=y
+CONFIG_USB_DWC2_PLATFORM=y
+# CONFIG_USB_DWC2_TRACK_MISSED_SOFS is not set
+CONFIG_USB_EHCI_HCD=y
+CONFIG_USB_EHCI_HCD_PLATFORM=y
+CONFIG_USB_NET_DRIVERS=y
+CONFIG_USB_OHCI_HCD=y
+CONFIG_USB_OHCI_HCD_PLATFORM=y
+CONFIG_USB_STORAGE=y
+CONFIG_USB_SUPPORT=y
+CONFIG_USELIB=y
+# CONFIG_USER_NS is not set
+CONFIG_USE_OF=y
+CONFIG_UTS_NS=y
+CONFIG_VDSO=y
+CONFIG_VECTORS_BASE=0xffff0000
+CONFIG_VFP=y
+CONFIG_VFPv3=y
+CONFIG_VM_EVENT_COUNTERS=y
+CONFIG_VT=y
+CONFIG_VT_CONSOLE=y
+CONFIG_VT_CONSOLE_SLEEP=y
+CONFIG_VT_HW_CONSOLE_BINDING=y
+CONFIG_WATCHDOG_CORE=y
+# CONFIG_WQ_POWER_EFFICIENT_DEFAULT is not set
+CONFIG_XFRM_ALGO=y
+CONFIG_XFRM_USER=y
+CONFIG_XPS=y
+CONFIG_XZ_DEC_ARM=y
+CONFIG_XZ_DEC_BCJ=y
+CONFIG_ZBOOT_ROM_BSS=0
+CONFIG_ZBOOT_ROM_TEXT=0
+CONFIG_ZLIB_INFLATE=y
+CONFIG_ZONE_DMA_FLAG=0
--- /dev/null
+From f05be589ff32e87821b86845625ed3d402d37dc7 Mon Sep 17 00:00:00 2001
+From: Boris BREZILLON <boris.brezillon@free-electrons.com>
+Date: Fri, 10 Apr 2015 12:09:01 +0800
+Subject: [PATCH] mfd: axp20x: Add AXP22x PMIC support
+
+Add support for the AXP22x PMIC devices to the existing AXP20x driver.
+This includes the AXP221 and AXP223, which are identical except for
+the external data bus. Only AXP221 is added for now. AXP223 will be
+added after it's Reduced Serial Bus (RSB) interface is supported.
+
+AXP22x defines a new set of registers, power supplies and regulators,
+but most of the API is similar to the AXP20x ones.
+
+A new irq chip definition is used, even though the available interrupts
+on AXP22x is a subset of those on AXP20x. This is done so the interrupt
+numbers match those on the datasheet.
+
+This patch only enables the interrupts, system power-off function, and PEK
+sub-device. The regulator driver must first support different variants
+before we enable it from the mfd driver.
+
+Signed-off-by: Boris BREZILLON <boris.brezillon@free-electrons.com>
+[wens@csie.org: fix interrupts and move regulators to separate patch]
+Signed-off-by: Chen-Yu Tsai <wens@csie.org>
+Signed-off-by: Lee Jones <lee.jones@linaro.org>
+---
+ drivers/mfd/axp20x.c | 98 ++++++++++++++++++++++++++++++++++++++++++++++
+ include/linux/mfd/axp20x.h | 86 ++++++++++++++++++++++++++++++++++++++++
+ 2 files changed, 184 insertions(+)
+
+diff --git a/drivers/mfd/axp20x.c b/drivers/mfd/axp20x.c
+index d18029b..cfbb7d7 100644
+--- a/drivers/mfd/axp20x.c
++++ b/drivers/mfd/axp20x.c
+@@ -32,6 +32,7 @@
+ static const char * const axp20x_model_names[] = {
+ "AXP202",
+ "AXP209",
++ "AXP221",
+ "AXP288",
+ };
+
+@@ -54,6 +55,25 @@ static const struct regmap_access_table axp20x_volatile_table = {
+ .n_yes_ranges = ARRAY_SIZE(axp20x_volatile_ranges),
+ };
+
++static const struct regmap_range axp22x_writeable_ranges[] = {
++ regmap_reg_range(AXP20X_DATACACHE(0), AXP20X_IRQ5_STATE),
++ regmap_reg_range(AXP20X_DCDC_MODE, AXP22X_BATLOW_THRES1),
++};
++
++static const struct regmap_range axp22x_volatile_ranges[] = {
++ regmap_reg_range(AXP20X_IRQ1_EN, AXP20X_IRQ5_STATE),
++};
++
++static const struct regmap_access_table axp22x_writeable_table = {
++ .yes_ranges = axp22x_writeable_ranges,
++ .n_yes_ranges = ARRAY_SIZE(axp22x_writeable_ranges),
++};
++
++static const struct regmap_access_table axp22x_volatile_table = {
++ .yes_ranges = axp22x_volatile_ranges,
++ .n_yes_ranges = ARRAY_SIZE(axp22x_volatile_ranges),
++};
++
+ static const struct regmap_range axp288_writeable_ranges[] = {
+ regmap_reg_range(AXP20X_DATACACHE(0), AXP20X_IRQ6_STATE),
+ regmap_reg_range(AXP20X_DCDC_MODE, AXP288_FG_TUNE5),
+@@ -87,6 +107,20 @@ static struct resource axp20x_pek_resources[] = {
+ },
+ };
+
++static struct resource axp22x_pek_resources[] = {
++ {
++ .name = "PEK_DBR",
++ .start = AXP22X_IRQ_PEK_RIS_EDGE,
++ .end = AXP22X_IRQ_PEK_RIS_EDGE,
++ .flags = IORESOURCE_IRQ,
++ }, {
++ .name = "PEK_DBF",
++ .start = AXP22X_IRQ_PEK_FAL_EDGE,
++ .end = AXP22X_IRQ_PEK_FAL_EDGE,
++ .flags = IORESOURCE_IRQ,
++ },
++};
++
+ static struct resource axp288_fuel_gauge_resources[] = {
+ {
+ .start = AXP288_IRQ_QWBTU,
+@@ -129,6 +163,15 @@ static const struct regmap_config axp20x_regmap_config = {
+ .cache_type = REGCACHE_RBTREE,
+ };
+
++static const struct regmap_config axp22x_regmap_config = {
++ .reg_bits = 8,
++ .val_bits = 8,
++ .wr_table = &axp22x_writeable_table,
++ .volatile_table = &axp22x_volatile_table,
++ .max_register = AXP22X_BATLOW_THRES1,
++ .cache_type = REGCACHE_RBTREE,
++};
++
+ static const struct regmap_config axp288_regmap_config = {
+ .reg_bits = 8,
+ .val_bits = 8,
+@@ -181,6 +224,34 @@ static const struct regmap_irq axp20x_regmap_irqs[] = {
+ INIT_REGMAP_IRQ(AXP20X, GPIO0_INPUT, 4, 0),
+ };
+
++static const struct regmap_irq axp22x_regmap_irqs[] = {
++ INIT_REGMAP_IRQ(AXP22X, ACIN_OVER_V, 0, 7),
++ INIT_REGMAP_IRQ(AXP22X, ACIN_PLUGIN, 0, 6),
++ INIT_REGMAP_IRQ(AXP22X, ACIN_REMOVAL, 0, 5),
++ INIT_REGMAP_IRQ(AXP22X, VBUS_OVER_V, 0, 4),
++ INIT_REGMAP_IRQ(AXP22X, VBUS_PLUGIN, 0, 3),
++ INIT_REGMAP_IRQ(AXP22X, VBUS_REMOVAL, 0, 2),
++ INIT_REGMAP_IRQ(AXP22X, VBUS_V_LOW, 0, 1),
++ INIT_REGMAP_IRQ(AXP22X, BATT_PLUGIN, 1, 7),
++ INIT_REGMAP_IRQ(AXP22X, BATT_REMOVAL, 1, 6),
++ INIT_REGMAP_IRQ(AXP22X, BATT_ENT_ACT_MODE, 1, 5),
++ INIT_REGMAP_IRQ(AXP22X, BATT_EXIT_ACT_MODE, 1, 4),
++ INIT_REGMAP_IRQ(AXP22X, CHARG, 1, 3),
++ INIT_REGMAP_IRQ(AXP22X, CHARG_DONE, 1, 2),
++ INIT_REGMAP_IRQ(AXP22X, BATT_TEMP_HIGH, 1, 1),
++ INIT_REGMAP_IRQ(AXP22X, BATT_TEMP_LOW, 1, 0),
++ INIT_REGMAP_IRQ(AXP22X, DIE_TEMP_HIGH, 2, 7),
++ INIT_REGMAP_IRQ(AXP22X, PEK_SHORT, 2, 1),
++ INIT_REGMAP_IRQ(AXP22X, PEK_LONG, 2, 0),
++ INIT_REGMAP_IRQ(AXP22X, LOW_PWR_LVL1, 3, 1),
++ INIT_REGMAP_IRQ(AXP22X, LOW_PWR_LVL2, 3, 0),
++ INIT_REGMAP_IRQ(AXP22X, TIMER, 4, 7),
++ INIT_REGMAP_IRQ(AXP22X, PEK_RIS_EDGE, 4, 6),
++ INIT_REGMAP_IRQ(AXP22X, PEK_FAL_EDGE, 4, 5),
++ INIT_REGMAP_IRQ(AXP22X, GPIO1_INPUT, 4, 1),
++ INIT_REGMAP_IRQ(AXP22X, GPIO0_INPUT, 4, 0),
++};
++
+ /* some IRQs are compatible with axp20x models */
+ static const struct regmap_irq axp288_regmap_irqs[] = {
+ INIT_REGMAP_IRQ(AXP288, VBUS_FALL, 0, 2),
+@@ -224,6 +295,7 @@ static const struct regmap_irq axp288_regmap_irqs[] = {
+ static const struct of_device_id axp20x_of_match[] = {
+ { .compatible = "x-powers,axp202", .data = (void *) AXP202_ID },
+ { .compatible = "x-powers,axp209", .data = (void *) AXP209_ID },
++ { .compatible = "x-powers,axp221", .data = (void *) AXP221_ID },
+ { },
+ };
+ MODULE_DEVICE_TABLE(of, axp20x_of_match);
+@@ -258,6 +330,18 @@ static const struct regmap_irq_chip axp20x_regmap_irq_chip = {
+
+ };
+
++static const struct regmap_irq_chip axp22x_regmap_irq_chip = {
++ .name = "axp22x_irq_chip",
++ .status_base = AXP20X_IRQ1_STATE,
++ .ack_base = AXP20X_IRQ1_STATE,
++ .mask_base = AXP20X_IRQ1_EN,
++ .mask_invert = true,
++ .init_ack_masked = true,
++ .irqs = axp22x_regmap_irqs,
++ .num_irqs = ARRAY_SIZE(axp22x_regmap_irqs),
++ .num_regs = 5,
++};
++
+ static const struct regmap_irq_chip axp288_regmap_irq_chip = {
+ .name = "axp288_irq_chip",
+ .status_base = AXP20X_IRQ1_STATE,
+@@ -281,6 +365,14 @@ static struct mfd_cell axp20x_cells[] = {
+ },
+ };
+
++static struct mfd_cell axp22x_cells[] = {
++ {
++ .name = "axp20x-pek",
++ .num_resources = ARRAY_SIZE(axp22x_pek_resources),
++ .resources = axp22x_pek_resources,
++ },
++};
++
+ static struct resource axp288_adc_resources[] = {
+ {
+ .name = "GPADC",
+@@ -426,6 +518,12 @@ static int axp20x_match_device(struct axp20x_dev *axp20x, struct device *dev)
+ axp20x->regmap_cfg = &axp20x_regmap_config;
+ axp20x->regmap_irq_chip = &axp20x_regmap_irq_chip;
+ break;
++ case AXP221_ID:
++ axp20x->nr_cells = ARRAY_SIZE(axp22x_cells);
++ axp20x->cells = axp22x_cells;
++ axp20x->regmap_cfg = &axp22x_regmap_config;
++ axp20x->regmap_irq_chip = &axp22x_regmap_irq_chip;
++ break;
+ case AXP288_ID:
+ axp20x->cells = axp288_cells;
+ axp20x->nr_cells = ARRAY_SIZE(axp288_cells);
+diff --git a/include/linux/mfd/axp20x.h b/include/linux/mfd/axp20x.h
+index dfabd6d..95568eb 100644
+--- a/include/linux/mfd/axp20x.h
++++ b/include/linux/mfd/axp20x.h
+@@ -14,6 +14,7 @@
+ enum {
+ AXP202_ID = 0,
+ AXP209_ID,
++ AXP221_ID,
+ AXP288_ID,
+ NR_AXP20X_VARIANTS,
+ };
+@@ -45,6 +46,28 @@ enum {
+ #define AXP20X_V_LTF_DISCHRG 0x3c
+ #define AXP20X_V_HTF_DISCHRG 0x3d
+
++#define AXP22X_PWR_OUT_CTRL1 0x10
++#define AXP22X_PWR_OUT_CTRL2 0x12
++#define AXP22X_PWR_OUT_CTRL3 0x13
++#define AXP22X_DLDO1_V_OUT 0x15
++#define AXP22X_DLDO2_V_OUT 0x16
++#define AXP22X_DLDO3_V_OUT 0x17
++#define AXP22X_DLDO4_V_OUT 0x18
++#define AXP22X_ELDO1_V_OUT 0x19
++#define AXP22X_ELDO2_V_OUT 0x1a
++#define AXP22X_ELDO3_V_OUT 0x1b
++#define AXP22X_DC5LDO_V_OUT 0x1c
++#define AXP22X_DCDC1_V_OUT 0x21
++#define AXP22X_DCDC2_V_OUT 0x22
++#define AXP22X_DCDC3_V_OUT 0x23
++#define AXP22X_DCDC4_V_OUT 0x24
++#define AXP22X_DCDC5_V_OUT 0x25
++#define AXP22X_DCDC23_V_RAMP_CTRL 0x27
++#define AXP22X_ALDO1_V_OUT 0x28
++#define AXP22X_ALDO2_V_OUT 0x29
++#define AXP22X_ALDO3_V_OUT 0x2a
++#define AXP22X_CHRG_CTRL3 0x35
++
+ /* Interrupt */
+ #define AXP20X_IRQ1_EN 0x40
+ #define AXP20X_IRQ2_EN 0x41
+@@ -100,6 +123,9 @@ enum {
+ #define AXP20X_VBUS_MON 0x8b
+ #define AXP20X_OVER_TMP 0x8f
+
++#define AXP22X_PWREN_CTRL1 0x8c
++#define AXP22X_PWREN_CTRL2 0x8d
++
+ /* GPIO */
+ #define AXP20X_GPIO0_CTRL 0x90
+ #define AXP20X_LDO5_V_OUT 0x91
+@@ -108,6 +134,11 @@ enum {
+ #define AXP20X_GPIO20_SS 0x94
+ #define AXP20X_GPIO3_CTRL 0x95
+
++#define AXP22X_LDO_IO0_V_OUT 0x91
++#define AXP22X_LDO_IO1_V_OUT 0x93
++#define AXP22X_GPIO_STATE 0x94
++#define AXP22X_GPIO_PULL_DOWN 0x95
++
+ /* Battery */
+ #define AXP20X_CHRG_CC_31_24 0xb0
+ #define AXP20X_CHRG_CC_23_16 0xb1
+@@ -120,6 +151,9 @@ enum {
+ #define AXP20X_CC_CTRL 0xb8
+ #define AXP20X_FG_RES 0xb9
+
++/* AXP22X specific registers */
++#define AXP22X_BATLOW_THRES1 0xe6
++
+ /* AXP288 specific registers */
+ #define AXP288_PMIC_ADC_H 0x56
+ #define AXP288_PMIC_ADC_L 0x57
+@@ -158,6 +192,30 @@ enum {
+ AXP20X_REG_ID_MAX,
+ };
+
++enum {
++ AXP22X_DCDC1 = 0,
++ AXP22X_DCDC2,
++ AXP22X_DCDC3,
++ AXP22X_DCDC4,
++ AXP22X_DCDC5,
++ AXP22X_DC1SW,
++ AXP22X_DC5LDO,
++ AXP22X_ALDO1,
++ AXP22X_ALDO2,
++ AXP22X_ALDO3,
++ AXP22X_ELDO1,
++ AXP22X_ELDO2,
++ AXP22X_ELDO3,
++ AXP22X_DLDO1,
++ AXP22X_DLDO2,
++ AXP22X_DLDO3,
++ AXP22X_DLDO4,
++ AXP22X_RTC_LDO,
++ AXP22X_LDO_IO0,
++ AXP22X_LDO_IO1,
++ AXP22X_REG_ID_MAX,
++};
++
+ /* IRQs */
+ enum {
+ AXP20X_IRQ_ACIN_OVER_V = 1,
+@@ -199,6 +257,34 @@ enum {
+ AXP20X_IRQ_GPIO0_INPUT,
+ };
+
++enum axp22x_irqs {
++ AXP22X_IRQ_ACIN_OVER_V = 1,
++ AXP22X_IRQ_ACIN_PLUGIN,
++ AXP22X_IRQ_ACIN_REMOVAL,
++ AXP22X_IRQ_VBUS_OVER_V,
++ AXP22X_IRQ_VBUS_PLUGIN,
++ AXP22X_IRQ_VBUS_REMOVAL,
++ AXP22X_IRQ_VBUS_V_LOW,
++ AXP22X_IRQ_BATT_PLUGIN,
++ AXP22X_IRQ_BATT_REMOVAL,
++ AXP22X_IRQ_BATT_ENT_ACT_MODE,
++ AXP22X_IRQ_BATT_EXIT_ACT_MODE,
++ AXP22X_IRQ_CHARG,
++ AXP22X_IRQ_CHARG_DONE,
++ AXP22X_IRQ_BATT_TEMP_HIGH,
++ AXP22X_IRQ_BATT_TEMP_LOW,
++ AXP22X_IRQ_DIE_TEMP_HIGH,
++ AXP22X_IRQ_PEK_SHORT,
++ AXP22X_IRQ_PEK_LONG,
++ AXP22X_IRQ_LOW_PWR_LVL1,
++ AXP22X_IRQ_LOW_PWR_LVL2,
++ AXP22X_IRQ_TIMER,
++ AXP22X_IRQ_PEK_RIS_EDGE,
++ AXP22X_IRQ_PEK_FAL_EDGE,
++ AXP22X_IRQ_GPIO1_INPUT,
++ AXP22X_IRQ_GPIO0_INPUT,
++};
++
+ enum axp288_irqs {
+ AXP288_IRQ_VBUS_FALL = 2,
+ AXP288_IRQ_VBUS_RISE,
--- /dev/null
+From f95b73ba272eac5495e69e12795d5ea8bc81d2cd Mon Sep 17 00:00:00 2001
+From: Boris BREZILLON <boris.brezillon@free-electrons.com>
+Date: Fri, 10 Apr 2015 12:09:03 +0800
+Subject: [PATCH] regulator: axp20x: Prepare support for multiple AXP chip
+ families
+
+Rework the AXP20X_ macros and probe function to support the several chip
+families, so that each family can define it's own set of regulators.
+
+Signed-off-by: Boris BREZILLON <boris.brezillon@free-electrons.com>
+[wens@csie.org: Support different DC-DC work frequency ranges]
+Signed-off-by: Chen-Yu Tsai <wens@csie.org>
+Reviewed-by: Mark Brown <broonie@kernel.org>
+Signed-off-by: Lee Jones <lee.jones@linaro.org>
+---
+ drivers/regulator/axp20x-regulator.c | 143 +++++++++++++++++++++++------------
+ 1 file changed, 94 insertions(+), 49 deletions(-)
+
+diff --git a/drivers/regulator/axp20x-regulator.c b/drivers/regulator/axp20x-regulator.c
+index e4331f5..50ae0b5 100644
+--- a/drivers/regulator/axp20x-regulator.c
++++ b/drivers/regulator/axp20x-regulator.c
+@@ -32,15 +32,15 @@
+
+ #define AXP20X_FREQ_DCDC_MASK 0x0f
+
+-#define AXP20X_DESC_IO(_id, _match, _supply, _min, _max, _step, _vreg, _vmask, \
+- _ereg, _emask, _enable_val, _disable_val) \
+- [AXP20X_##_id] = { \
++#define AXP_DESC_IO(_family, _id, _match, _supply, _min, _max, _step, _vreg, \
++ _vmask, _ereg, _emask, _enable_val, _disable_val) \
++ [_family##_##_id] = { \
+ .name = #_id, \
+ .supply_name = (_supply), \
+ .of_match = of_match_ptr(_match), \
+ .regulators_node = of_match_ptr("regulators"), \
+ .type = REGULATOR_VOLTAGE, \
+- .id = AXP20X_##_id, \
++ .id = _family##_##_id, \
+ .n_voltages = (((_max) - (_min)) / (_step) + 1), \
+ .owner = THIS_MODULE, \
+ .min_uV = (_min) * 1000, \
+@@ -54,15 +54,15 @@
+ .ops = &axp20x_ops, \
+ }
+
+-#define AXP20X_DESC(_id, _match, _supply, _min, _max, _step, _vreg, _vmask, \
+- _ereg, _emask) \
+- [AXP20X_##_id] = { \
++#define AXP_DESC(_family, _id, _match, _supply, _min, _max, _step, _vreg, \
++ _vmask, _ereg, _emask) \
++ [_family##_##_id] = { \
+ .name = #_id, \
+ .supply_name = (_supply), \
+ .of_match = of_match_ptr(_match), \
+ .regulators_node = of_match_ptr("regulators"), \
+ .type = REGULATOR_VOLTAGE, \
+- .id = AXP20X_##_id, \
++ .id = _family##_##_id, \
+ .n_voltages = (((_max) - (_min)) / (_step) + 1), \
+ .owner = THIS_MODULE, \
+ .min_uV = (_min) * 1000, \
+@@ -74,29 +74,29 @@
+ .ops = &axp20x_ops, \
+ }
+
+-#define AXP20X_DESC_FIXED(_id, _match, _supply, _volt) \
+- [AXP20X_##_id] = { \
++#define AXP_DESC_FIXED(_family, _id, _match, _supply, _volt) \
++ [_family##_##_id] = { \
+ .name = #_id, \
+ .supply_name = (_supply), \
+ .of_match = of_match_ptr(_match), \
+ .regulators_node = of_match_ptr("regulators"), \
+ .type = REGULATOR_VOLTAGE, \
+- .id = AXP20X_##_id, \
++ .id = _family##_##_id, \
+ .n_voltages = 1, \
+ .owner = THIS_MODULE, \
+ .min_uV = (_volt) * 1000, \
+ .ops = &axp20x_ops_fixed \
+ }
+
+-#define AXP20X_DESC_TABLE(_id, _match, _supply, _table, _vreg, _vmask, _ereg, \
+- _emask) \
+- [AXP20X_##_id] = { \
++#define AXP_DESC_TABLE(_family, _id, _match, _supply, _table, _vreg, _vmask, \
++ _ereg, _emask) \
++ [_family##_##_id] = { \
+ .name = #_id, \
+ .supply_name = (_supply), \
+ .of_match = of_match_ptr(_match), \
+ .regulators_node = of_match_ptr("regulators"), \
+ .type = REGULATOR_VOLTAGE, \
+- .id = AXP20X_##_id, \
++ .id = _family##_##_id, \
+ .n_voltages = ARRAY_SIZE(_table), \
+ .owner = THIS_MODULE, \
+ .vsel_reg = (_vreg), \
+@@ -136,37 +136,57 @@ static struct regulator_ops axp20x_ops = {
+ };
+
+ static const struct regulator_desc axp20x_regulators[] = {
+- AXP20X_DESC(DCDC2, "dcdc2", "vin2", 700, 2275, 25, AXP20X_DCDC2_V_OUT,
+- 0x3f, AXP20X_PWR_OUT_CTRL, 0x10),
+- AXP20X_DESC(DCDC3, "dcdc3", "vin3", 700, 3500, 25, AXP20X_DCDC3_V_OUT,
+- 0x7f, AXP20X_PWR_OUT_CTRL, 0x02),
+- AXP20X_DESC_FIXED(LDO1, "ldo1", "acin", 1300),
+- AXP20X_DESC(LDO2, "ldo2", "ldo24in", 1800, 3300, 100,
+- AXP20X_LDO24_V_OUT, 0xf0, AXP20X_PWR_OUT_CTRL, 0x04),
+- AXP20X_DESC(LDO3, "ldo3", "ldo3in", 700, 3500, 25, AXP20X_LDO3_V_OUT,
+- 0x7f, AXP20X_PWR_OUT_CTRL, 0x40),
+- AXP20X_DESC_TABLE(LDO4, "ldo4", "ldo24in", axp20x_ldo4_data,
+- AXP20X_LDO24_V_OUT, 0x0f, AXP20X_PWR_OUT_CTRL, 0x08),
+- AXP20X_DESC_IO(LDO5, "ldo5", "ldo5in", 1800, 3300, 100,
+- AXP20X_LDO5_V_OUT, 0xf0, AXP20X_GPIO0_CTRL, 0x07,
+- AXP20X_IO_ENABLED, AXP20X_IO_DISABLED),
++ AXP_DESC(AXP20X, DCDC2, "dcdc2", "vin2", 700, 2275, 25,
++ AXP20X_DCDC2_V_OUT, 0x3f, AXP20X_PWR_OUT_CTRL, 0x10),
++ AXP_DESC(AXP20X, DCDC3, "dcdc3", "vin3", 700, 3500, 25,
++ AXP20X_DCDC3_V_OUT, 0x7f, AXP20X_PWR_OUT_CTRL, 0x02),
++ AXP_DESC_FIXED(AXP20X, LDO1, "ldo1", "acin", 1300),
++ AXP_DESC(AXP20X, LDO2, "ldo2", "ldo24in", 1800, 3300, 100,
++ AXP20X_LDO24_V_OUT, 0xf0, AXP20X_PWR_OUT_CTRL, 0x04),
++ AXP_DESC(AXP20X, LDO3, "ldo3", "ldo3in", 700, 3500, 25,
++ AXP20X_LDO3_V_OUT, 0x7f, AXP20X_PWR_OUT_CTRL, 0x40),
++ AXP_DESC_TABLE(AXP20X, LDO4, "ldo4", "ldo24in", axp20x_ldo4_data,
++ AXP20X_LDO24_V_OUT, 0x0f, AXP20X_PWR_OUT_CTRL, 0x08),
++ AXP_DESC_IO(AXP20X, LDO5, "ldo5", "ldo5in", 1800, 3300, 100,
++ AXP20X_LDO5_V_OUT, 0xf0, AXP20X_GPIO0_CTRL, 0x07,
++ AXP20X_IO_ENABLED, AXP20X_IO_DISABLED),
+ };
+
+ static int axp20x_set_dcdc_freq(struct platform_device *pdev, u32 dcdcfreq)
+ {
+ struct axp20x_dev *axp20x = dev_get_drvdata(pdev->dev.parent);
++ u32 min, max, def, step;
++
++ switch (axp20x->variant) {
++ case AXP202_ID:
++ case AXP209_ID:
++ min = 750;
++ max = 1875;
++ def = 1500;
++ step = 75;
++ break;
++ default:
++ dev_err(&pdev->dev,
++ "Setting DCDC frequency for unsupported AXP variant\n");
++ return -EINVAL;
++ }
++
++ if (dcdcfreq == 0)
++ dcdcfreq = def;
+
+- if (dcdcfreq < 750) {
+- dcdcfreq = 750;
+- dev_warn(&pdev->dev, "DCDC frequency too low. Set to 750kHz\n");
++ if (dcdcfreq < min) {
++ dcdcfreq = min;
++ dev_warn(&pdev->dev, "DCDC frequency too low. Set to %ukHz\n",
++ min);
+ }
+
+- if (dcdcfreq > 1875) {
+- dcdcfreq = 1875;
+- dev_warn(&pdev->dev, "DCDC frequency too high. Set to 1875kHz\n");
++ if (dcdcfreq > max) {
++ dcdcfreq = max;
++ dev_warn(&pdev->dev, "DCDC frequency too high. Set to %ukHz\n",
++ max);
+ }
+
+- dcdcfreq = (dcdcfreq - 750) / 75;
++ dcdcfreq = (dcdcfreq - min) / step;
+
+ return regmap_update_bits(axp20x->regmap, AXP20X_DCDC_FREQ,
+ AXP20X_FREQ_DCDC_MASK, dcdcfreq);
+@@ -176,7 +196,7 @@ static int axp20x_regulator_parse_dt(struct platform_device *pdev)
+ {
+ struct device_node *np, *regulators;
+ int ret;
+- u32 dcdcfreq;
++ u32 dcdcfreq = 0;
+
+ np = of_node_get(pdev->dev.parent->of_node);
+ if (!np)
+@@ -186,7 +206,6 @@ static int axp20x_regulator_parse_dt(struct platform_device *pdev)
+ if (!regulators) {
+ dev_warn(&pdev->dev, "regulators node not found\n");
+ } else {
+- dcdcfreq = 1500;
+ of_property_read_u32(regulators, "x-powers,dcdc-freq", &dcdcfreq);
+ ret = axp20x_set_dcdc_freq(pdev, dcdcfreq);
+ if (ret < 0) {
+@@ -202,15 +221,27 @@ static int axp20x_regulator_parse_dt(struct platform_device *pdev)
+
+ static int axp20x_set_dcdc_workmode(struct regulator_dev *rdev, int id, u32 workmode)
+ {
+- unsigned int mask = AXP20X_WORKMODE_DCDC2_MASK;
++ struct axp20x_dev *axp20x = rdev_get_drvdata(rdev);
++ unsigned int mask;
+
+- if ((id != AXP20X_DCDC2) && (id != AXP20X_DCDC3))
+- return -EINVAL;
++ switch (axp20x->variant) {
++ case AXP202_ID:
++ case AXP209_ID:
++ if ((id != AXP20X_DCDC2) && (id != AXP20X_DCDC3))
++ return -EINVAL;
++
++ mask = AXP20X_WORKMODE_DCDC2_MASK;
++ if (id == AXP20X_DCDC3)
++ mask = AXP20X_WORKMODE_DCDC3_MASK;
+
+- if (id == AXP20X_DCDC3)
+- mask = AXP20X_WORKMODE_DCDC3_MASK;
++ workmode <<= ffs(mask) - 1;
++ break;
+
+- workmode <<= ffs(mask) - 1;
++ default:
++ /* should not happen */
++ WARN_ON(1);
++ return -EINVAL;
++ }
+
+ return regmap_update_bits(rdev->regmap, AXP20X_DCDC_MODE, mask, workmode);
+ }
+@@ -219,22 +250,36 @@ static int axp20x_regulator_probe(struct platform_device *pdev)
+ {
+ struct regulator_dev *rdev;
+ struct axp20x_dev *axp20x = dev_get_drvdata(pdev->dev.parent);
++ const struct regulator_desc *regulators;
+ struct regulator_config config = {
+ .dev = pdev->dev.parent,
+ .regmap = axp20x->regmap,
++ .driver_data = axp20x,
+ };
+- int ret, i;
++ int ret, i, nregulators;
+ u32 workmode;
+
++ switch (axp20x->variant) {
++ case AXP202_ID:
++ case AXP209_ID:
++ regulators = axp20x_regulators;
++ nregulators = AXP20X_REG_ID_MAX;
++ break;
++ default:
++ dev_err(&pdev->dev, "Unsupported AXP variant: %ld\n",
++ axp20x->variant);
++ return -EINVAL;
++ }
++
+ /* This only sets the dcdc freq. Ignore any errors */
+ axp20x_regulator_parse_dt(pdev);
+
+- for (i = 0; i < AXP20X_REG_ID_MAX; i++) {
+- rdev = devm_regulator_register(&pdev->dev, &axp20x_regulators[i],
++ for (i = 0; i < nregulators; i++) {
++ rdev = devm_regulator_register(&pdev->dev, ®ulators[i],
+ &config);
+ if (IS_ERR(rdev)) {
+ dev_err(&pdev->dev, "Failed to register %s\n",
+- axp20x_regulators[i].name);
++ regulators[i].name);
+
+ return PTR_ERR(rdev);
+ }
+@@ -245,7 +290,7 @@ static int axp20x_regulator_probe(struct platform_device *pdev)
+ if (!ret) {
+ if (axp20x_set_dcdc_workmode(rdev, i, workmode))
+ dev_err(&pdev->dev, "Failed to set workmode on %s\n",
+- axp20x_regulators[i].name);
++ rdev->desc->name);
+ }
+ }
+
--- /dev/null
+From c3f89434c9d778572cf09e8327bd047b11d48b90 Mon Sep 17 00:00:00 2001
+From: Boris BREZILLON <boris.brezillon@free-electrons.com>
+Date: Fri, 10 Apr 2015 12:09:04 +0800
+Subject: [PATCH] regulator: axp20x: Add support for AXP22X regulators
+
+Add AXP22X regulator definitions and variant id associations.
+This introduces a new "switch" type output for one of the regulators.
+It is a switchable secondary output of one regulator, with the same
+voltage level as the primary output.
+
+Signed-off-by: Boris BREZILLON <boris.brezillon@free-electrons.com>
+[wens@csie.org: Moved variant choosing to multi family support patch]
+[wens@csie.org: Add dc-dc work frequency range]
+[wens@csie.org: Add "switch" type output regulator DC1SW]
+Signed-off-by: Chen-Yu Tsai <wens@csie.org>
+Reviewed-by: Mark Brown <broonie@kernel.org>
+Signed-off-by: Lee Jones <lee.jones@linaro.org>
+---
+ drivers/regulator/axp20x-regulator.c | 96 ++++++++++++++++++++++++++++++++++++
+ 1 file changed, 96 insertions(+)
+
+diff --git a/drivers/regulator/axp20x-regulator.c b/drivers/regulator/axp20x-regulator.c
+index 50ae0b5..6468291 100644
+--- a/drivers/regulator/axp20x-regulator.c
++++ b/drivers/regulator/axp20x-regulator.c
+@@ -27,8 +27,12 @@
+ #define AXP20X_IO_ENABLED 0x03
+ #define AXP20X_IO_DISABLED 0x07
+
++#define AXP22X_IO_ENABLED 0x04
++#define AXP22X_IO_DISABLED 0x03
++
+ #define AXP20X_WORKMODE_DCDC2_MASK BIT(2)
+ #define AXP20X_WORKMODE_DCDC3_MASK BIT(1)
++#define AXP22X_WORKMODE_DCDCX_MASK(x) BIT(x)
+
+ #define AXP20X_FREQ_DCDC_MASK 0x0f
+
+@@ -74,6 +78,26 @@
+ .ops = &axp20x_ops, \
+ }
+
++#define AXP_DESC_SW(_family, _id, _match, _supply, _min, _max, _step, _vreg, \
++ _vmask, _ereg, _emask) \
++ [_family##_##_id] = { \
++ .name = #_id, \
++ .supply_name = (_supply), \
++ .of_match = of_match_ptr(_match), \
++ .regulators_node = of_match_ptr("regulators"), \
++ .type = REGULATOR_VOLTAGE, \
++ .id = _family##_##_id, \
++ .n_voltages = (((_max) - (_min)) / (_step) + 1), \
++ .owner = THIS_MODULE, \
++ .min_uV = (_min) * 1000, \
++ .uV_step = (_step) * 1000, \
++ .vsel_reg = (_vreg), \
++ .vsel_mask = (_vmask), \
++ .enable_reg = (_ereg), \
++ .enable_mask = (_emask), \
++ .ops = &axp20x_ops_sw, \
++ }
++
+ #define AXP_DESC_FIXED(_family, _id, _match, _supply, _volt) \
+ [_family##_##_id] = { \
+ .name = #_id, \
+@@ -135,6 +159,14 @@ static struct regulator_ops axp20x_ops = {
+ .is_enabled = regulator_is_enabled_regmap,
+ };
+
++static struct regulator_ops axp20x_ops_sw = {
++ .get_voltage_sel = regulator_get_voltage_sel_regmap,
++ .list_voltage = regulator_list_voltage_linear,
++ .enable = regulator_enable_regmap,
++ .disable = regulator_disable_regmap,
++ .is_enabled = regulator_is_enabled_regmap,
++};
++
+ static const struct regulator_desc axp20x_regulators[] = {
+ AXP_DESC(AXP20X, DCDC2, "dcdc2", "vin2", 700, 2275, 25,
+ AXP20X_DCDC2_V_OUT, 0x3f, AXP20X_PWR_OUT_CTRL, 0x10),
+@@ -152,6 +184,52 @@ static const struct regulator_desc axp20x_regulators[] = {
+ AXP20X_IO_ENABLED, AXP20X_IO_DISABLED),
+ };
+
++static const struct regulator_desc axp22x_regulators[] = {
++ AXP_DESC(AXP22X, DCDC1, "dcdc1", "vin1", 1600, 3400, 100,
++ AXP22X_DCDC1_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL1, BIT(1)),
++ AXP_DESC(AXP22X, DCDC2, "dcdc2", "vin2", 600, 1540, 20,
++ AXP22X_DCDC2_V_OUT, 0x3f, AXP22X_PWR_OUT_CTRL1, BIT(2)),
++ AXP_DESC(AXP22X, DCDC3, "dcdc3", "vin3", 600, 1860, 20,
++ AXP22X_DCDC3_V_OUT, 0x3f, AXP22X_PWR_OUT_CTRL1, BIT(3)),
++ AXP_DESC(AXP22X, DCDC4, "dcdc4", "vin4", 600, 1540, 20,
++ AXP22X_DCDC4_V_OUT, 0x3f, AXP22X_PWR_OUT_CTRL1, BIT(3)),
++ AXP_DESC(AXP22X, DCDC5, "dcdc5", "vin5", 1000, 2550, 50,
++ AXP22X_DCDC5_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL1, BIT(4)),
++ /* secondary switchable output of DCDC1 */
++ AXP_DESC_SW(AXP22X, DC1SW, "dc1sw", "dcdc1", 1600, 3400, 100,
++ AXP22X_DCDC1_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL2, BIT(7)),
++ /* LDO regulator internally chained to DCDC5 */
++ AXP_DESC(AXP22X, DC5LDO, "dc5ldo", "dcdc5", 700, 1400, 100,
++ AXP22X_DC5LDO_V_OUT, 0x7, AXP22X_PWR_OUT_CTRL1, BIT(0)),
++ AXP_DESC(AXP22X, ALDO1, "aldo1", "aldoin", 700, 3300, 100,
++ AXP22X_ALDO1_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL1, BIT(6)),
++ AXP_DESC(AXP22X, ALDO2, "aldo2", "aldoin", 700, 3300, 100,
++ AXP22X_ALDO2_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL1, BIT(7)),
++ AXP_DESC(AXP22X, ALDO3, "aldo3", "aldoin", 700, 3300, 100,
++ AXP22X_ALDO3_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL3, BIT(7)),
++ AXP_DESC(AXP22X, DLDO1, "dldo1", "dldoin", 700, 3300, 100,
++ AXP22X_DLDO1_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL2, BIT(3)),
++ AXP_DESC(AXP22X, DLDO2, "dldo2", "dldoin", 700, 3300, 100,
++ AXP22X_DLDO2_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL2, BIT(4)),
++ AXP_DESC(AXP22X, DLDO3, "dldo3", "dldoin", 700, 3300, 100,
++ AXP22X_DLDO3_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL2, BIT(5)),
++ AXP_DESC(AXP22X, DLDO4, "dldo4", "dldoin", 700, 3300, 100,
++ AXP22X_DLDO4_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL2, BIT(6)),
++ AXP_DESC(AXP22X, ELDO1, "eldo1", "eldoin", 700, 3300, 100,
++ AXP22X_ELDO1_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL2, BIT(0)),
++ AXP_DESC(AXP22X, ELDO2, "eldo2", "eldoin", 700, 3300, 100,
++ AXP22X_ELDO2_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL2, BIT(1)),
++ AXP_DESC(AXP22X, ELDO3, "eldo3", "eldoin", 700, 3300, 100,
++ AXP22X_ELDO3_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL2, BIT(2)),
++ AXP_DESC_IO(AXP22X, LDO_IO0, "ldo_io0", "ips", 1800, 3300, 100,
++ AXP22X_LDO_IO0_V_OUT, 0x1f, AXP20X_GPIO0_CTRL, 0x07,
++ AXP22X_IO_ENABLED, AXP22X_IO_DISABLED),
++ AXP_DESC_IO(AXP22X, LDO_IO1, "ldo_io1", "ips", 1800, 3300, 100,
++ AXP22X_LDO_IO1_V_OUT, 0x1f, AXP20X_GPIO1_CTRL, 0x07,
++ AXP22X_IO_ENABLED, AXP22X_IO_DISABLED),
++ AXP_DESC_FIXED(AXP22X, RTC_LDO, "rtc_ldo", "ips", 3000),
++};
++
+ static int axp20x_set_dcdc_freq(struct platform_device *pdev, u32 dcdcfreq)
+ {
+ struct axp20x_dev *axp20x = dev_get_drvdata(pdev->dev.parent);
+@@ -165,6 +243,12 @@ static int axp20x_set_dcdc_freq(struct platform_device *pdev, u32 dcdcfreq)
+ def = 1500;
+ step = 75;
+ break;
++ case AXP221_ID:
++ min = 1800;
++ max = 4050;
++ def = 3000;
++ step = 150;
++ break;
+ default:
+ dev_err(&pdev->dev,
+ "Setting DCDC frequency for unsupported AXP variant\n");
+@@ -237,6 +321,14 @@ static int axp20x_set_dcdc_workmode(struct regulator_dev *rdev, int id, u32 work
+ workmode <<= ffs(mask) - 1;
+ break;
+
++ case AXP221_ID:
++ if (id < AXP22X_DCDC1 || id > AXP22X_DCDC5)
++ return -EINVAL;
++
++ mask = AXP22X_WORKMODE_DCDCX_MASK(id - AXP22X_DCDC1);
++ workmode <<= id - AXP22X_DCDC1;
++ break;
++
+ default:
+ /* should not happen */
+ WARN_ON(1);
+@@ -265,6 +357,10 @@ static int axp20x_regulator_probe(struct platform_device *pdev)
+ regulators = axp20x_regulators;
+ nregulators = AXP20X_REG_ID_MAX;
+ break;
++ case AXP221_ID:
++ regulators = axp22x_regulators;
++ nregulators = AXP22X_REG_ID_MAX;
++ break;
+ default:
+ dev_err(&pdev->dev, "Unsupported AXP variant: %ld\n",
+ axp20x->variant);
--- /dev/null
+From 5469e15c9a0025e8822762ab9acfc3ee50e55c2c Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Bruno=20Pr=C3=A9mont?= <bonbons@linux-vserver.org>
+Date: Tue, 9 Jun 2015 08:30:48 +0200
+Subject: [PATCH] mfd: axp20x: Add missing registers, and mark more registers
+ volatile
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+Add an extra set of registers which is necessary tu support the PMICs
+battery charger function, and mark registers which contain status bits,
+gpio status, and adc readings as volatile.
+
+Cc: Bruno Prémont <bonbons@linux-vserver.org>
+Signed-off-by: Bruno Prémont <bonbons@linux-vserver.org>
+Signed-off-by: Hans de Goede <hdegoede@redhat.com>
+Acked-by: Lee Jones <lee.jones@linaro.org>
+Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com>
+---
+Changes in v2:
+-Add a AXP20X_OCV_MAX define
+Changes in v3:
+-Add Bruno's S-o-b
+---
+ drivers/mfd/axp20x.c | 8 +++++++-
+ include/linux/mfd/axp20x.h | 6 ++++++
+ 2 files changed, 13 insertions(+), 1 deletion(-)
+
+diff --git a/drivers/mfd/axp20x.c b/drivers/mfd/axp20x.c
+index b369cfc..8bd3283 100644
+--- a/drivers/mfd/axp20x.c
++++ b/drivers/mfd/axp20x.c
+@@ -61,10 +61,16 @@ static const struct regmap_access_table axp152_volatile_table = {
+ static const struct regmap_range axp20x_writeable_ranges[] = {
+ regmap_reg_range(AXP20X_DATACACHE(0), AXP20X_IRQ5_STATE),
+ regmap_reg_range(AXP20X_DCDC_MODE, AXP20X_FG_RES),
++ regmap_reg_range(AXP20X_RDC_H, AXP20X_OCV(15)),
+ };
+
+ static const struct regmap_range axp20x_volatile_ranges[] = {
++ regmap_reg_range(AXP20X_PWR_INPUT_STATUS, AXP20X_USB_OTG_STATUS),
++ regmap_reg_range(AXP20X_CHRG_CTRL1, AXP20X_CHRG_CTRL2),
+ regmap_reg_range(AXP20X_IRQ1_EN, AXP20X_IRQ5_STATE),
++ regmap_reg_range(AXP20X_ACIN_V_ADC_H, AXP20X_IPSOUT_V_HIGH_L),
++ regmap_reg_range(AXP20X_GPIO20_SS, AXP20X_GPIO3_CTRL),
++ regmap_reg_range(AXP20X_FG_RES, AXP20X_RDC_L),
+ };
+
+ static const struct regmap_access_table axp20x_writeable_table = {
+@@ -195,7 +201,7 @@ static const struct regmap_config axp20x_regmap_config = {
+ .val_bits = 8,
+ .wr_table = &axp20x_writeable_table,
+ .volatile_table = &axp20x_volatile_table,
+- .max_register = AXP20X_FG_RES,
++ .max_register = AXP20X_OCV(AXP20X_OCV_MAX),
+ .cache_type = REGCACHE_RBTREE,
+ };
+
+diff --git a/include/linux/mfd/axp20x.h b/include/linux/mfd/axp20x.h
+index 52203d5..cc8ad1e 100644
+--- a/include/linux/mfd/axp20x.h
++++ b/include/linux/mfd/axp20x.h
+@@ -190,6 +190,12 @@ enum {
+ #define AXP20X_CC_CTRL 0xb8
+ #define AXP20X_FG_RES 0xb9
+
++/* OCV */
++#define AXP20X_RDC_H 0xba
++#define AXP20X_RDC_L 0xbb
++#define AXP20X_OCV(m) (0xc0 + (m))
++#define AXP20X_OCV_MAX 0xf
++
+ /* AXP22X specific registers */
+ #define AXP22X_BATLOW_THRES1 0xe6
+
--- /dev/null
+From 6d4fa89dcd85e2427da83319ce75e5df5febcc96 Mon Sep 17 00:00:00 2001
+From: Chen-Yu Tsai <wens@csie.org>
+Date: Fri, 10 Apr 2015 12:09:06 +0800
+Subject: [PATCH] mfd: axp20x: Enable AXP22X regulators
+
+Now that the axp20x-regulators driver supports different variants of the
+AXP family, we can enable regulator support for AXP22X without the risk
+of incorrectly configuring regulators.
+
+Signed-off-by: Chen-Yu Tsai <wens@csie.org>
+Signed-off-by: Lee Jones <lee.jones@linaro.org>
+---
+ drivers/mfd/axp20x.c | 2 ++
+ 1 file changed, 2 insertions(+)
+
+diff --git a/drivers/mfd/axp20x.c b/drivers/mfd/axp20x.c
+index cfbb7d7..6df9155 100644
+--- a/drivers/mfd/axp20x.c
++++ b/drivers/mfd/axp20x.c
+@@ -370,6 +370,8 @@ static struct mfd_cell axp22x_cells[] = {
+ .name = "axp20x-pek",
+ .num_resources = ARRAY_SIZE(axp22x_pek_resources),
+ .resources = axp22x_pek_resources,
++ }, {
++ .name = "axp20x-regulator",
+ },
+ };
+
--- /dev/null
+From a50e5abe10c95108ece5d3a91027570e66b5f238 Mon Sep 17 00:00:00 2001
+From: Michal Suchanek <hramrach@gmail.com>
+Date: Sat, 11 Jul 2015 14:59:56 +0200
+Subject: [PATCH] mfd: axp20x: Add axp152 support
+
+The axp152 is a stripped down version of the axp202 pmic with the battery
+charging function removed as it is intended for top-set boxes.
+
+Signed-off-by: Michal Suchanek <hramrach@gmail.com>
+Signed-off-by: Hans de Goede <hdegoede@redhat.com>
+Signed-off-by: Lee Jones <lee.jones@linaro.org>
+---
+ drivers/mfd/axp20x.c | 83 ++++++++++++++++++++++++++++++++++++++++++++++
+ include/linux/mfd/axp20x.h | 61 +++++++++++++++++++++++++++++++++-
+ 2 files changed, 143 insertions(+), 1 deletion(-)
+
+diff --git a/drivers/mfd/axp20x.c b/drivers/mfd/axp20x.c
+index 8c2c3c4..b369cfc 100644
+--- a/drivers/mfd/axp20x.c
++++ b/drivers/mfd/axp20x.c
+@@ -30,12 +30,34 @@
+ #define AXP20X_OFF 0x80
+
+ static const char * const axp20x_model_names[] = {
++ "AXP152",
+ "AXP202",
+ "AXP209",
+ "AXP221",
+ "AXP288",
+ };
+
++static const struct regmap_range axp152_writeable_ranges[] = {
++ regmap_reg_range(AXP152_LDO3456_DC1234_CTRL, AXP152_IRQ3_STATE),
++ regmap_reg_range(AXP152_DCDC_MODE, AXP152_PWM1_DUTY_CYCLE),
++};
++
++static const struct regmap_range axp152_volatile_ranges[] = {
++ regmap_reg_range(AXP152_PWR_OP_MODE, AXP152_PWR_OP_MODE),
++ regmap_reg_range(AXP152_IRQ1_EN, AXP152_IRQ3_STATE),
++ regmap_reg_range(AXP152_GPIO_INPUT, AXP152_GPIO_INPUT),
++};
++
++static const struct regmap_access_table axp152_writeable_table = {
++ .yes_ranges = axp152_writeable_ranges,
++ .n_yes_ranges = ARRAY_SIZE(axp152_writeable_ranges),
++};
++
++static const struct regmap_access_table axp152_volatile_table = {
++ .yes_ranges = axp152_volatile_ranges,
++ .n_yes_ranges = ARRAY_SIZE(axp152_volatile_ranges),
++};
++
+ static const struct regmap_range axp20x_writeable_ranges[] = {
+ regmap_reg_range(AXP20X_DATACACHE(0), AXP20X_IRQ5_STATE),
+ regmap_reg_range(AXP20X_DCDC_MODE, AXP20X_FG_RES),
+@@ -93,6 +115,11 @@ static const struct regmap_access_table axp288_volatile_table = {
+ .n_yes_ranges = ARRAY_SIZE(axp288_volatile_ranges),
+ };
+
++static struct resource axp152_pek_resources[] = {
++ DEFINE_RES_IRQ_NAMED(AXP152_IRQ_PEK_RIS_EDGE, "PEK_DBR"),
++ DEFINE_RES_IRQ_NAMED(AXP152_IRQ_PEK_FAL_EDGE, "PEK_DBF"),
++};
++
+ static struct resource axp20x_pek_resources[] = {
+ {
+ .name = "PEK_DBR",
+@@ -154,6 +181,15 @@ static struct resource axp288_fuel_gauge_resources[] = {
+ },
+ };
+
++static const struct regmap_config axp152_regmap_config = {
++ .reg_bits = 8,
++ .val_bits = 8,
++ .wr_table = &axp152_writeable_table,
++ .volatile_table = &axp152_volatile_table,
++ .max_register = AXP152_PWM1_DUTY_CYCLE,
++ .cache_type = REGCACHE_RBTREE,
++};
++
+ static const struct regmap_config axp20x_regmap_config = {
+ .reg_bits = 8,
+ .val_bits = 8,
+@@ -184,6 +220,26 @@ static const struct regmap_config axp288_regmap_config = {
+ #define INIT_REGMAP_IRQ(_variant, _irq, _off, _mask) \
+ [_variant##_IRQ_##_irq] = { .reg_offset = (_off), .mask = BIT(_mask) }
+
++static const struct regmap_irq axp152_regmap_irqs[] = {
++ INIT_REGMAP_IRQ(AXP152, LDO0IN_CONNECT, 0, 6),
++ INIT_REGMAP_IRQ(AXP152, LDO0IN_REMOVAL, 0, 5),
++ INIT_REGMAP_IRQ(AXP152, ALDO0IN_CONNECT, 0, 3),
++ INIT_REGMAP_IRQ(AXP152, ALDO0IN_REMOVAL, 0, 2),
++ INIT_REGMAP_IRQ(AXP152, DCDC1_V_LOW, 1, 5),
++ INIT_REGMAP_IRQ(AXP152, DCDC2_V_LOW, 1, 4),
++ INIT_REGMAP_IRQ(AXP152, DCDC3_V_LOW, 1, 3),
++ INIT_REGMAP_IRQ(AXP152, DCDC4_V_LOW, 1, 2),
++ INIT_REGMAP_IRQ(AXP152, PEK_SHORT, 1, 1),
++ INIT_REGMAP_IRQ(AXP152, PEK_LONG, 1, 0),
++ INIT_REGMAP_IRQ(AXP152, TIMER, 2, 7),
++ INIT_REGMAP_IRQ(AXP152, PEK_RIS_EDGE, 2, 6),
++ INIT_REGMAP_IRQ(AXP152, PEK_FAL_EDGE, 2, 5),
++ INIT_REGMAP_IRQ(AXP152, GPIO3_INPUT, 2, 3),
++ INIT_REGMAP_IRQ(AXP152, GPIO2_INPUT, 2, 2),
++ INIT_REGMAP_IRQ(AXP152, GPIO1_INPUT, 2, 1),
++ INIT_REGMAP_IRQ(AXP152, GPIO0_INPUT, 2, 0),
++};
++
+ static const struct regmap_irq axp20x_regmap_irqs[] = {
+ INIT_REGMAP_IRQ(AXP20X, ACIN_OVER_V, 0, 7),
+ INIT_REGMAP_IRQ(AXP20X, ACIN_PLUGIN, 0, 6),
+@@ -293,6 +349,7 @@ static const struct regmap_irq axp288_regmap_irqs[] = {
+ };
+
+ static const struct of_device_id axp20x_of_match[] = {
++ { .compatible = "x-powers,axp152", .data = (void *) AXP152_ID },
+ { .compatible = "x-powers,axp202", .data = (void *) AXP202_ID },
+ { .compatible = "x-powers,axp209", .data = (void *) AXP209_ID },
+ { .compatible = "x-powers,axp221", .data = (void *) AXP221_ID },
+@@ -317,6 +374,18 @@ static const struct acpi_device_id axp20x_acpi_match[] = {
+ };
+ MODULE_DEVICE_TABLE(acpi, axp20x_acpi_match);
+
++static const struct regmap_irq_chip axp152_regmap_irq_chip = {
++ .name = "axp152_irq_chip",
++ .status_base = AXP152_IRQ1_STATE,
++ .ack_base = AXP152_IRQ1_STATE,
++ .mask_base = AXP152_IRQ1_EN,
++ .mask_invert = true,
++ .init_ack_masked = true,
++ .irqs = axp152_regmap_irqs,
++ .num_irqs = ARRAY_SIZE(axp152_regmap_irqs),
++ .num_regs = 3,
++};
++
+ static const struct regmap_irq_chip axp20x_regmap_irq_chip = {
+ .name = "axp20x_irq_chip",
+ .status_base = AXP20X_IRQ1_STATE,
+@@ -375,6 +444,14 @@ static struct mfd_cell axp22x_cells[] = {
+ },
+ };
+
++static struct mfd_cell axp152_cells[] = {
++ {
++ .name = "axp20x-pek",
++ .num_resources = ARRAY_SIZE(axp152_pek_resources),
++ .resources = axp152_pek_resources,
++ },
++};
++
+ static struct resource axp288_adc_resources[] = {
+ {
+ .name = "GPADC",
+@@ -513,6 +590,12 @@ static int axp20x_match_device(struct axp20x_dev *axp20x, struct device *dev)
+ }
+
+ switch (axp20x->variant) {
++ case AXP152_ID:
++ axp20x->nr_cells = ARRAY_SIZE(axp152_cells);
++ axp20x->cells = axp152_cells;
++ axp20x->regmap_cfg = &axp152_regmap_config;
++ axp20x->regmap_irq_chip = &axp152_regmap_irq_chip;
++ break;
+ case AXP202_ID:
+ case AXP209_ID:
+ axp20x->nr_cells = ARRAY_SIZE(axp20x_cells);
+diff --git a/include/linux/mfd/axp20x.h b/include/linux/mfd/axp20x.h
+index c2aa853..52203d5 100644
+--- a/include/linux/mfd/axp20x.h
++++ b/include/linux/mfd/axp20x.h
+@@ -12,7 +12,8 @@
+ #define __LINUX_MFD_AXP20X_H
+
+ enum {
+- AXP202_ID = 0,
++ AXP152_ID = 0,
++ AXP202_ID,
+ AXP209_ID,
+ AXP221_ID,
+ AXP288_ID,
+@@ -22,6 +23,24 @@ enum {
+ #define AXP20X_DATACACHE(m) (0x04 + (m))
+
+ /* Power supply */
++#define AXP152_PWR_OP_MODE 0x01
++#define AXP152_LDO3456_DC1234_CTRL 0x12
++#define AXP152_ALDO_OP_MODE 0x13
++#define AXP152_LDO0_CTRL 0x15
++#define AXP152_DCDC2_V_OUT 0x23
++#define AXP152_DCDC2_V_SCAL 0x25
++#define AXP152_DCDC1_V_OUT 0x26
++#define AXP152_DCDC3_V_OUT 0x27
++#define AXP152_ALDO12_V_OUT 0x28
++#define AXP152_DLDO1_V_OUT 0x29
++#define AXP152_DLDO2_V_OUT 0x2a
++#define AXP152_DCDC4_V_OUT 0x2b
++#define AXP152_V_OFF 0x31
++#define AXP152_OFF_CTRL 0x32
++#define AXP152_PEK_KEY 0x36
++#define AXP152_DCDC_FREQ 0x37
++#define AXP152_DCDC_MODE 0x80
++
+ #define AXP20X_PWR_INPUT_STATUS 0x00
+ #define AXP20X_PWR_OP_MODE 0x01
+ #define AXP20X_USB_OTG_STATUS 0x02
+@@ -69,6 +88,13 @@ enum {
+ #define AXP22X_CHRG_CTRL3 0x35
+
+ /* Interrupt */
++#define AXP152_IRQ1_EN 0x40
++#define AXP152_IRQ2_EN 0x41
++#define AXP152_IRQ3_EN 0x42
++#define AXP152_IRQ1_STATE 0x48
++#define AXP152_IRQ2_STATE 0x49
++#define AXP152_IRQ3_STATE 0x4a
++
+ #define AXP20X_IRQ1_EN 0x40
+ #define AXP20X_IRQ2_EN 0x41
+ #define AXP20X_IRQ3_EN 0x42
+@@ -127,6 +153,19 @@ enum {
+ #define AXP22X_PWREN_CTRL2 0x8d
+
+ /* GPIO */
++#define AXP152_GPIO0_CTRL 0x90
++#define AXP152_GPIO1_CTRL 0x91
++#define AXP152_GPIO2_CTRL 0x92
++#define AXP152_GPIO3_CTRL 0x93
++#define AXP152_LDOGPIO2_V_OUT 0x96
++#define AXP152_GPIO_INPUT 0x97
++#define AXP152_PWM0_FREQ_X 0x98
++#define AXP152_PWM0_FREQ_Y 0x99
++#define AXP152_PWM0_DUTY_CYCLE 0x9a
++#define AXP152_PWM1_FREQ_X 0x9b
++#define AXP152_PWM1_FREQ_Y 0x9c
++#define AXP152_PWM1_DUTY_CYCLE 0x9d
++
+ #define AXP20X_GPIO0_CTRL 0x90
+ #define AXP20X_LDO5_V_OUT 0x91
+ #define AXP20X_GPIO1_CTRL 0x92
+@@ -218,6 +257,26 @@ enum {
+
+ /* IRQs */
+ enum {
++ AXP152_IRQ_LDO0IN_CONNECT = 1,
++ AXP152_IRQ_LDO0IN_REMOVAL,
++ AXP152_IRQ_ALDO0IN_CONNECT,
++ AXP152_IRQ_ALDO0IN_REMOVAL,
++ AXP152_IRQ_DCDC1_V_LOW,
++ AXP152_IRQ_DCDC2_V_LOW,
++ AXP152_IRQ_DCDC3_V_LOW,
++ AXP152_IRQ_DCDC4_V_LOW,
++ AXP152_IRQ_PEK_SHORT,
++ AXP152_IRQ_PEK_LONG,
++ AXP152_IRQ_TIMER,
++ AXP152_IRQ_PEK_RIS_EDGE,
++ AXP152_IRQ_PEK_FAL_EDGE,
++ AXP152_IRQ_GPIO3_INPUT,
++ AXP152_IRQ_GPIO2_INPUT,
++ AXP152_IRQ_GPIO1_INPUT,
++ AXP152_IRQ_GPIO0_INPUT,
++};
++
++enum {
+ AXP20X_IRQ_ACIN_OVER_V = 1,
+ AXP20X_IRQ_ACIN_PLUGIN,
+ AXP20X_IRQ_ACIN_REMOVAL,
--- /dev/null
+From 3282055a7d0a304d541dbdbe2e32167e1a2f117c Mon Sep 17 00:00:00 2001
+From: Boris BREZILLON <boris.brezillon@free-electrons.com>
+Date: Mon, 28 Jul 2014 14:20:54 +0200
+Subject: [PATCH] mtd: nand: Take nand_ecc_ctrl initialization out of
+ nand_scan_tail
+
+Take ECC initialization code portion out of nand_scan_tail so that we can
+re-use this implementation.
+
+This commit only moves some code around and makes no functional changes.
+
+Signed-off-by: Boris BREZILLON <boris.brezillon@free-electrons.com>
+Signed-off-by: Hans de Goede <hdegoede@redhat.com>
+---
+ drivers/mtd/nand/nand_base.c | 91 +++++++++++++++++++++++++++-----------------
+ 1 file changed, 56 insertions(+), 35 deletions(-)
+
+diff --git a/drivers/mtd/nand/nand_base.c b/drivers/mtd/nand/nand_base.c
+index c2e1232..f580ed1 100644
+--- a/drivers/mtd/nand/nand_base.c
++++ b/drivers/mtd/nand/nand_base.c
+@@ -3892,42 +3892,15 @@ static bool nand_ecc_strength_good(struct mtd_info *mtd)
+ return corr >= ds_corr && ecc->strength >= chip->ecc_strength_ds;
+ }
+
+-/**
+- * nand_scan_tail - [NAND Interface] Scan for the NAND device
+- * @mtd: MTD device structure
+- *
+- * This is the second phase of the normal nand_scan() function. It fills out
+- * all the uninitialized function pointers with the defaults and scans for a
+- * bad block table if appropriate.
++/*
++ * Initialize ECC struct:
++ * - fill ECC struct with default function/values when these ones are undefined
++ * - fill ECC infos based on MTD device
+ */
+-int nand_scan_tail(struct mtd_info *mtd)
++static int nand_ecc_ctrl_init(struct mtd_info *mtd, struct nand_ecc_ctrl *ecc)
+ {
+ int i;
+- struct nand_chip *chip = mtd->priv;
+- struct nand_ecc_ctrl *ecc = &chip->ecc;
+- struct nand_buffers *nbuf;
+-
+- /* New bad blocks should be marked in OOB, flash-based BBT, or both */
+- BUG_ON((chip->bbt_options & NAND_BBT_NO_OOB_BBM) &&
+- !(chip->bbt_options & NAND_BBT_USE_FLASH));
+-
+- if (!(chip->options & NAND_OWN_BUFFERS)) {
+- nbuf = kzalloc(sizeof(*nbuf) + mtd->writesize
+- + mtd->oobsize * 3, GFP_KERNEL);
+- if (!nbuf)
+- return -ENOMEM;
+- nbuf->ecccalc = (uint8_t *)(nbuf + 1);
+- nbuf->ecccode = nbuf->ecccalc + mtd->oobsize;
+- nbuf->databuf = nbuf->ecccode + mtd->oobsize;
+
+- chip->buffers = nbuf;
+- } else {
+- if (!chip->buffers)
+- return -ENOMEM;
+- }
+-
+- /* Set the internal oob buffer location, just after the page data */
+- chip->oob_poi = chip->buffers->databuf + mtd->writesize;
+
+ /*
+ * If no default placement scheme is given, select an appropriate one.
+@@ -3953,9 +3926,6 @@ int nand_scan_tail(struct mtd_info *mtd)
+ }
+ }
+
+- if (!chip->write_page)
+- chip->write_page = nand_write_page;
+-
+ /*
+ * Check ECC mode, default to software if 3byte/512byte hardware ECC is
+ * selected and we have 256 byte pagesize fallback to software ECC
+@@ -4125,6 +4095,57 @@ int nand_scan_tail(struct mtd_info *mtd)
+ }
+ ecc->total = ecc->steps * ecc->bytes;
+
++ return 0;
++}
++
++/**
++ * nand_scan_tail - [NAND Interface] Scan for the NAND device
++ * @mtd: MTD device structure
++ *
++ * This is the second phase of the normal nand_scan() function. It fills out
++ * all the uninitialized function pointers with the defaults and scans for a
++ * bad block table if appropriate.
++ */
++int nand_scan_tail(struct mtd_info *mtd)
++{
++ int ret;
++ struct nand_chip *chip = mtd->priv;
++ struct nand_ecc_ctrl *ecc = &chip->ecc;
++ struct nand_buffers *nbuf;
++
++ /* New bad blocks should be marked in OOB, flash-based BBT, or both */
++ BUG_ON((chip->bbt_options & NAND_BBT_NO_OOB_BBM) &&
++ !(chip->bbt_options & NAND_BBT_USE_FLASH));
++
++ if (!(chip->options & NAND_OWN_BUFFERS)) {
++ nbuf = kzalloc(sizeof(*nbuf) + mtd->writesize
++ + mtd->oobsize * 3, GFP_KERNEL);
++ if (!nbuf)
++ return -ENOMEM;
++ nbuf->ecccalc = (uint8_t *)(nbuf + 1);
++ nbuf->ecccode = nbuf->ecccalc + mtd->oobsize;
++ nbuf->databuf = nbuf->ecccode + mtd->oobsize;
++ chip->buffers = nbuf;
++ } else {
++ if (!chip->buffers)
++ return -ENOMEM;
++ }
++
++ /* Set the internal oob buffer location, just after the page data */
++ chip->oob_poi = chip->buffers->databuf + mtd->writesize;
++
++ if (!chip->write_page)
++ chip->write_page = nand_write_page;
++
++ /* Initialize ECC struct */
++ ret = nand_ecc_ctrl_init(mtd, ecc);
++ if (ret) {
++ if (!(chip->options & NAND_OWN_BUFFERS))
++ kfree(chip->buffers);
++
++ return ret;
++ }
++
+ /* Allow subpage writes up to ecc.steps. Not possible for MLC flash */
+ if (!(chip->options & NAND_NO_SUBPAGE_WRITE) && nand_is_slc(chip)) {
+ switch (ecc->steps) {
--- /dev/null
+From a95cc309cf74eed3fc457dec3dcc44d9bf79e0e6 Mon Sep 17 00:00:00 2001
+From: Boris BREZILLON <boris.brezillon@free-electrons.com>
+Date: Mon, 28 Jul 2014 15:01:15 +0200
+Subject: [PATCH] mtd: nand: Add support for NAND partitions
+
+Add support for NAND partitions, and indirectly for per partition ECC
+config, and also per partiton random seed support for the upcoming
+randomizer support.
+
+This is necessary to be able to use different ECC / randomizer settings for
+the parts of the NAND which are read directly by a bootrom (which has a
+fixed ECC / random seed setting) and the generic data part of the NAND for
+which we often want a stronger ECC and / or random seed.
+
+Provide helper functions to add/delete/allocate nand partitions.
+NAND core code now make use of the partition specific nand_ecc_ctrl struct
+(if available) when doing read/write operations.
+
+Signed-off-by: Boris BREZILLON <boris.brezillon@free-electrons.com>
+Signed-off-by: Hans de Goede <hdegoede@redhat.com>
+---
+ drivers/mtd/nand/Kconfig | 4 +
+ drivers/mtd/nand/Makefile | 2 +
+ drivers/mtd/nand/nand_base.c | 712 +++++++++++++++++++++++++++++++++++--------
+ drivers/mtd/nand/nand_bch.c | 16 +-
+ drivers/mtd/nand/nand_ecc.c | 4 +-
+ include/linux/mtd/nand.h | 38 +++
+ 6 files changed, 635 insertions(+), 141 deletions(-)
+
+diff --git a/drivers/mtd/nand/Kconfig b/drivers/mtd/nand/Kconfig
+index 5897d8d..8242470 100644
+--- a/drivers/mtd/nand/Kconfig
++++ b/drivers/mtd/nand/Kconfig
+@@ -22,6 +22,10 @@ menuconfig MTD_NAND
+
+ if MTD_NAND
+
++config MTD_OF_NAND_PARTS
++ tristate
++ default n
++
+ config MTD_NAND_BCH
+ tristate
+ select BCH
+diff --git a/drivers/mtd/nand/Makefile b/drivers/mtd/nand/Makefile
+index 582bbd05..fcbe032 100644
+--- a/drivers/mtd/nand/Makefile
++++ b/drivers/mtd/nand/Makefile
+@@ -53,4 +53,6 @@ obj-$(CONFIG_MTD_NAND_BCM47XXNFLASH) += bcm47xxnflash/
+ obj-$(CONFIG_MTD_NAND_SUNXI) += sunxi_nand.o
+ obj-$(CONFIG_MTD_NAND_HISI504) += hisi504_nand.o
+
++obj-$(CONFIG_MTD_OF_NAND_PARTS) += ofnandpart.o
++
+ nand-objs := nand_base.o nand_bbt.o nand_timings.o
+diff --git a/drivers/mtd/nand/nand_base.c b/drivers/mtd/nand/nand_base.c
+index f580ed1..a30b67f 100644
+--- a/drivers/mtd/nand/nand_base.c
++++ b/drivers/mtd/nand/nand_base.c
+@@ -1134,26 +1134,26 @@ static int nand_read_page_raw_syndrome(struct mtd_info *mtd,
+ struct nand_chip *chip, uint8_t *buf,
+ int oob_required, int page)
+ {
+- int eccsize = chip->ecc.size;
+- int eccbytes = chip->ecc.bytes;
++ int eccsize = chip->cur_ecc->size;
++ int eccbytes = chip->cur_ecc->bytes;
+ uint8_t *oob = chip->oob_poi;
+ int steps, size;
+
+- for (steps = chip->ecc.steps; steps > 0; steps--) {
++ for (steps = chip->cur_ecc->steps; steps > 0; steps--) {
+ chip->read_buf(mtd, buf, eccsize);
+ buf += eccsize;
+
+- if (chip->ecc.prepad) {
+- chip->read_buf(mtd, oob, chip->ecc.prepad);
+- oob += chip->ecc.prepad;
++ if (chip->cur_ecc->prepad) {
++ chip->read_buf(mtd, oob, chip->cur_ecc->prepad);
++ oob += chip->cur_ecc->prepad;
+ }
+
+ chip->read_buf(mtd, oob, eccbytes);
+ oob += eccbytes;
+
+- if (chip->ecc.postpad) {
+- chip->read_buf(mtd, oob, chip->ecc.postpad);
+- oob += chip->ecc.postpad;
++ if (chip->cur_ecc->postpad) {
++ chip->read_buf(mtd, oob, chip->cur_ecc->postpad);
++ oob += chip->cur_ecc->postpad;
+ }
+ }
+
+@@ -1175,30 +1175,31 @@ static int nand_read_page_raw_syndrome(struct mtd_info *mtd,
+ static int nand_read_page_swecc(struct mtd_info *mtd, struct nand_chip *chip,
+ uint8_t *buf, int oob_required, int page)
+ {
+- int i, eccsize = chip->ecc.size;
+- int eccbytes = chip->ecc.bytes;
+- int eccsteps = chip->ecc.steps;
++ int i, eccsize = chip->cur_ecc->size;
++ int eccbytes = chip->cur_ecc->bytes;
++ int eccsteps = chip->cur_ecc->steps;
+ uint8_t *p = buf;
+ uint8_t *ecc_calc = chip->buffers->ecccalc;
+ uint8_t *ecc_code = chip->buffers->ecccode;
+- uint32_t *eccpos = chip->ecc.layout->eccpos;
++ uint32_t *eccpos = chip->cur_ecc->layout->eccpos;
+ unsigned int max_bitflips = 0;
+
+- chip->ecc.read_page_raw(mtd, chip, buf, 1, page);
++ chip->cur_ecc->read_page_raw(mtd, chip, buf, 1, page);
+
+ for (i = 0; eccsteps; eccsteps--, i += eccbytes, p += eccsize)
+- chip->ecc.calculate(mtd, p, &ecc_calc[i]);
++ chip->cur_ecc->calculate(mtd, p, &ecc_calc[i]);
+
+- for (i = 0; i < chip->ecc.total; i++)
++ for (i = 0; i < chip->cur_ecc->total; i++)
+ ecc_code[i] = chip->oob_poi[eccpos[i]];
+
+- eccsteps = chip->ecc.steps;
++ eccsteps = chip->cur_ecc->steps;
+ p = buf;
+
+ for (i = 0 ; eccsteps; eccsteps--, i += eccbytes, p += eccsize) {
+ int stat;
+
+- stat = chip->ecc.correct(mtd, p, &ecc_code[i], &ecc_calc[i]);
++ stat = chip->cur_ecc->correct(mtd, p, &ecc_code[i],
++ &ecc_calc[i]);
+ if (stat < 0) {
+ mtd->ecc_stats.failed++;
+ } else {
+@@ -1223,7 +1224,7 @@ static int nand_read_subpage(struct mtd_info *mtd, struct nand_chip *chip,
+ int page)
+ {
+ int start_step, end_step, num_steps;
+- uint32_t *eccpos = chip->ecc.layout->eccpos;
++ uint32_t *eccpos = chip->cur_ecc->layout->eccpos;
+ uint8_t *p;
+ int data_col_addr, i, gaps = 0;
+ int datafrag_len, eccfrag_len, aligned_len, aligned_pos;
+@@ -1232,16 +1233,16 @@ static int nand_read_subpage(struct mtd_info *mtd, struct nand_chip *chip,
+ unsigned int max_bitflips = 0;
+
+ /* Column address within the page aligned to ECC size (256bytes) */
+- start_step = data_offs / chip->ecc.size;
+- end_step = (data_offs + readlen - 1) / chip->ecc.size;
++ start_step = data_offs / chip->cur_ecc->size;
++ end_step = (data_offs + readlen - 1) / chip->cur_ecc->size;
+ num_steps = end_step - start_step + 1;
+- index = start_step * chip->ecc.bytes;
++ index = start_step * chip->cur_ecc->bytes;
+
+ /* Data size aligned to ECC ecc.size */
+- datafrag_len = num_steps * chip->ecc.size;
+- eccfrag_len = num_steps * chip->ecc.bytes;
++ datafrag_len = num_steps * chip->cur_ecc->size;
++ eccfrag_len = num_steps * chip->cur_ecc->bytes;
+
+- data_col_addr = start_step * chip->ecc.size;
++ data_col_addr = start_step * chip->cur_ecc->size;
+ /* If we read not a page aligned data */
+ if (data_col_addr != 0)
+ chip->cmdfunc(mtd, NAND_CMD_RNDOUT, data_col_addr, -1);
+@@ -1250,8 +1251,9 @@ static int nand_read_subpage(struct mtd_info *mtd, struct nand_chip *chip,
+ chip->read_buf(mtd, p, datafrag_len);
+
+ /* Calculate ECC */
+- for (i = 0; i < eccfrag_len ; i += chip->ecc.bytes, p += chip->ecc.size)
+- chip->ecc.calculate(mtd, p, &chip->buffers->ecccalc[i]);
++ for (i = 0; i < eccfrag_len;
++ i += chip->cur_ecc->bytes, p += chip->cur_ecc->size)
++ chip->cur_ecc->calculate(mtd, p, &chip->buffers->ecccalc[i]);
+
+ /*
+ * The performance is faster if we position offsets according to
+@@ -1275,7 +1277,8 @@ static int nand_read_subpage(struct mtd_info *mtd, struct nand_chip *chip,
+ aligned_len = eccfrag_len;
+ if (eccpos[index] & (busw - 1))
+ aligned_len++;
+- if (eccpos[index + (num_steps * chip->ecc.bytes)] & (busw - 1))
++ if (eccpos[index + (num_steps * chip->cur_ecc->bytes)] &
++ (busw - 1))
+ aligned_len++;
+
+ chip->cmdfunc(mtd, NAND_CMD_RNDOUT,
+@@ -1287,11 +1290,13 @@ static int nand_read_subpage(struct mtd_info *mtd, struct nand_chip *chip,
+ chip->buffers->ecccode[i] = chip->oob_poi[eccpos[i + index]];
+
+ p = bufpoi + data_col_addr;
+- for (i = 0; i < eccfrag_len ; i += chip->ecc.bytes, p += chip->ecc.size) {
++ for (i = 0; i < eccfrag_len;
++ i += chip->cur_ecc->bytes, p += chip->cur_ecc->size) {
+ int stat;
+
+- stat = chip->ecc.correct(mtd, p,
+- &chip->buffers->ecccode[i], &chip->buffers->ecccalc[i]);
++ stat = chip->cur_ecc->correct(mtd, p,
++ &chip->buffers->ecccode[i],
++ &chip->buffers->ecccalc[i]);
+ if (stat < 0) {
+ mtd->ecc_stats.failed++;
+ } else {
+@@ -1315,32 +1320,33 @@ static int nand_read_subpage(struct mtd_info *mtd, struct nand_chip *chip,
+ static int nand_read_page_hwecc(struct mtd_info *mtd, struct nand_chip *chip,
+ uint8_t *buf, int oob_required, int page)
+ {
+- int i, eccsize = chip->ecc.size;
+- int eccbytes = chip->ecc.bytes;
+- int eccsteps = chip->ecc.steps;
++ int i, eccsize = chip->cur_ecc->size;
++ int eccbytes = chip->cur_ecc->bytes;
++ int eccsteps = chip->cur_ecc->steps;
+ uint8_t *p = buf;
+ uint8_t *ecc_calc = chip->buffers->ecccalc;
+ uint8_t *ecc_code = chip->buffers->ecccode;
+- uint32_t *eccpos = chip->ecc.layout->eccpos;
++ uint32_t *eccpos = chip->cur_ecc->layout->eccpos;
+ unsigned int max_bitflips = 0;
+
+ for (i = 0; eccsteps; eccsteps--, i += eccbytes, p += eccsize) {
+- chip->ecc.hwctl(mtd, NAND_ECC_READ);
++ chip->cur_ecc->hwctl(mtd, NAND_ECC_READ);
+ chip->read_buf(mtd, p, eccsize);
+- chip->ecc.calculate(mtd, p, &ecc_calc[i]);
++ chip->cur_ecc->calculate(mtd, p, &ecc_calc[i]);
+ }
+ chip->read_buf(mtd, chip->oob_poi, mtd->oobsize);
+
+- for (i = 0; i < chip->ecc.total; i++)
++ for (i = 0; i < chip->cur_ecc->total; i++)
+ ecc_code[i] = chip->oob_poi[eccpos[i]];
+
+- eccsteps = chip->ecc.steps;
++ eccsteps = chip->cur_ecc->steps;
+ p = buf;
+
+ for (i = 0 ; eccsteps; eccsteps--, i += eccbytes, p += eccsize) {
+ int stat;
+
+- stat = chip->ecc.correct(mtd, p, &ecc_code[i], &ecc_calc[i]);
++ stat = chip->cur_ecc->correct(mtd, p, &ecc_code[i],
++ &ecc_calc[i]);
+ if (stat < 0) {
+ mtd->ecc_stats.failed++;
+ } else {
+@@ -1368,12 +1374,12 @@ static int nand_read_page_hwecc(struct mtd_info *mtd, struct nand_chip *chip,
+ static int nand_read_page_hwecc_oob_first(struct mtd_info *mtd,
+ struct nand_chip *chip, uint8_t *buf, int oob_required, int page)
+ {
+- int i, eccsize = chip->ecc.size;
+- int eccbytes = chip->ecc.bytes;
+- int eccsteps = chip->ecc.steps;
++ int i, eccsize = chip->cur_ecc->size;
++ int eccbytes = chip->cur_ecc->bytes;
++ int eccsteps = chip->cur_ecc->steps;
+ uint8_t *p = buf;
+ uint8_t *ecc_code = chip->buffers->ecccode;
+- uint32_t *eccpos = chip->ecc.layout->eccpos;
++ uint32_t *eccpos = chip->cur_ecc->layout->eccpos;
+ uint8_t *ecc_calc = chip->buffers->ecccalc;
+ unsigned int max_bitflips = 0;
+
+@@ -1382,17 +1388,17 @@ static int nand_read_page_hwecc_oob_first(struct mtd_info *mtd,
+ chip->read_buf(mtd, chip->oob_poi, mtd->oobsize);
+ chip->cmdfunc(mtd, NAND_CMD_READ0, 0, page);
+
+- for (i = 0; i < chip->ecc.total; i++)
++ for (i = 0; i < chip->cur_ecc->total; i++)
+ ecc_code[i] = chip->oob_poi[eccpos[i]];
+
+ for (i = 0; eccsteps; eccsteps--, i += eccbytes, p += eccsize) {
+ int stat;
+
+- chip->ecc.hwctl(mtd, NAND_ECC_READ);
++ chip->cur_ecc->hwctl(mtd, NAND_ECC_READ);
+ chip->read_buf(mtd, p, eccsize);
+- chip->ecc.calculate(mtd, p, &ecc_calc[i]);
++ chip->cur_ecc->calculate(mtd, p, &ecc_calc[i]);
+
+- stat = chip->ecc.correct(mtd, p, &ecc_code[i], NULL);
++ stat = chip->cur_ecc->correct(mtd, p, &ecc_code[i], NULL);
+ if (stat < 0) {
+ mtd->ecc_stats.failed++;
+ } else {
+@@ -1417,9 +1423,9 @@ static int nand_read_page_hwecc_oob_first(struct mtd_info *mtd,
+ static int nand_read_page_syndrome(struct mtd_info *mtd, struct nand_chip *chip,
+ uint8_t *buf, int oob_required, int page)
+ {
+- int i, eccsize = chip->ecc.size;
+- int eccbytes = chip->ecc.bytes;
+- int eccsteps = chip->ecc.steps;
++ int i, eccsize = chip->cur_ecc->size;
++ int eccbytes = chip->cur_ecc->bytes;
++ int eccsteps = chip->cur_ecc->steps;
+ uint8_t *p = buf;
+ uint8_t *oob = chip->oob_poi;
+ unsigned int max_bitflips = 0;
+@@ -1427,17 +1433,17 @@ static int nand_read_page_syndrome(struct mtd_info *mtd, struct nand_chip *chip,
+ for (i = 0; eccsteps; eccsteps--, i += eccbytes, p += eccsize) {
+ int stat;
+
+- chip->ecc.hwctl(mtd, NAND_ECC_READ);
++ chip->cur_ecc->hwctl(mtd, NAND_ECC_READ);
+ chip->read_buf(mtd, p, eccsize);
+
+- if (chip->ecc.prepad) {
+- chip->read_buf(mtd, oob, chip->ecc.prepad);
+- oob += chip->ecc.prepad;
++ if (chip->cur_ecc->prepad) {
++ chip->read_buf(mtd, oob, chip->cur_ecc->prepad);
++ oob += chip->cur_ecc->prepad;
+ }
+
+- chip->ecc.hwctl(mtd, NAND_ECC_READSYN);
++ chip->cur_ecc->hwctl(mtd, NAND_ECC_READSYN);
+ chip->read_buf(mtd, oob, eccbytes);
+- stat = chip->ecc.correct(mtd, p, oob, NULL);
++ stat = chip->cur_ecc->correct(mtd, p, oob, NULL);
+
+ if (stat < 0) {
+ mtd->ecc_stats.failed++;
+@@ -1448,9 +1454,9 @@ static int nand_read_page_syndrome(struct mtd_info *mtd, struct nand_chip *chip,
+
+ oob += eccbytes;
+
+- if (chip->ecc.postpad) {
+- chip->read_buf(mtd, oob, chip->ecc.postpad);
+- oob += chip->ecc.postpad;
++ if (chip->cur_ecc->postpad) {
++ chip->read_buf(mtd, oob, chip->cur_ecc->postpad);
++ oob += chip->cur_ecc->postpad;
+ }
+ }
+
+@@ -1480,7 +1486,7 @@ static uint8_t *nand_transfer_oob(struct nand_chip *chip, uint8_t *oob,
+ return oob + len;
+
+ case MTD_OPS_AUTO_OOB: {
+- struct nand_oobfree *free = chip->ecc.layout->oobfree;
++ struct nand_oobfree *free = chip->cur_ecc->layout->oobfree;
+ uint32_t boffs = 0, roffs = ops->ooboffs;
+ size_t bytes = 0;
+
+@@ -1600,17 +1606,21 @@ static int nand_do_read_ops(struct mtd_info *mtd, loff_t from,
+ * the read methods return max bitflips per ecc step.
+ */
+ if (unlikely(ops->mode == MTD_OPS_RAW))
+- ret = chip->ecc.read_page_raw(mtd, chip, bufpoi,
+- oob_required,
+- page);
++ ret = chip->cur_ecc->read_page_raw(mtd, chip,
++ bufpoi,
++ oob_required,
++ page);
+ else if (!aligned && NAND_HAS_SUBPAGE_READ(chip) &&
+ !oob)
+- ret = chip->ecc.read_subpage(mtd, chip,
+- col, bytes, bufpoi,
+- page);
++ ret = chip->cur_ecc->read_subpage(mtd, chip,
++ col, bytes,
++ bufpoi,
++ page);
+ else
+- ret = chip->ecc.read_page(mtd, chip, bufpoi,
+- oob_required, page);
++ ret = chip->cur_ecc->read_page(mtd, chip,
++ bufpoi,
++ oob_required,
++ page);
+ if (ret < 0) {
+ if (use_bufpoi)
+ /* Invalidate page cache */
+@@ -1746,6 +1756,39 @@ static int nand_read(struct mtd_info *mtd, loff_t from, size_t len,
+ }
+
+ /**
++ * nand_part_read - [MTD Interface] MTD compatibility function for nand_do_read_ecc
++ * @mtd: MTD device structure
++ * @from: offset to read from
++ * @len: number of bytes to read
++ * @retlen: pointer to variable to store the number of read bytes
++ * @buf: the databuffer to put data
++ *
++ * Get hold of the chip and call nand_do_read.
++ */
++static int nand_part_read(struct mtd_info *mtd, loff_t from, size_t len,
++ size_t *retlen, uint8_t *buf)
++{
++ struct nand_chip *chip = mtd->priv;
++ struct nand_part *part = to_nand_part(mtd);
++ struct mtd_oob_ops ops;
++ int ret;
++
++ from += part->offset;
++ nand_get_device(part->master, FL_READING);
++ if (part->ecc)
++ chip->cur_ecc = part->ecc;
++ ops.len = len;
++ ops.datbuf = buf;
++ ops.oobbuf = NULL;
++ ops.mode = MTD_OPS_PLACE_OOB;
++ ret = nand_do_read_ops(part->master, from, &ops);
++ *retlen = ops.retlen;
++ chip->cur_ecc = &chip->ecc;
++ nand_release_device(part->master);
++ return ret;
++}
++
++/**
+ * nand_read_oob_std - [REPLACEABLE] the most common OOB data read function
+ * @mtd: mtd info structure
+ * @chip: nand chip info structure
+@@ -1770,13 +1813,14 @@ static int nand_read_oob_syndrome(struct mtd_info *mtd, struct nand_chip *chip,
+ int page)
+ {
+ int length = mtd->oobsize;
+- int chunk = chip->ecc.bytes + chip->ecc.prepad + chip->ecc.postpad;
+- int eccsize = chip->ecc.size;
++ int chunk = chip->cur_ecc->bytes + chip->cur_ecc->prepad +
++ chip->cur_ecc->postpad;
++ int eccsize = chip->cur_ecc->size;
+ uint8_t *bufpoi = chip->oob_poi;
+ int i, toread, sndrnd = 0, pos;
+
+- chip->cmdfunc(mtd, NAND_CMD_READ0, chip->ecc.size, page);
+- for (i = 0; i < chip->ecc.steps; i++) {
++ chip->cmdfunc(mtd, NAND_CMD_READ0, chip->cur_ecc->size, page);
++ for (i = 0; i < chip->cur_ecc->steps; i++) {
+ if (sndrnd) {
+ pos = eccsize + i * (eccsize + chunk);
+ if (mtd->writesize > 512)
+@@ -1829,9 +1873,10 @@ static int nand_write_oob_std(struct mtd_info *mtd, struct nand_chip *chip,
+ static int nand_write_oob_syndrome(struct mtd_info *mtd,
+ struct nand_chip *chip, int page)
+ {
+- int chunk = chip->ecc.bytes + chip->ecc.prepad + chip->ecc.postpad;
+- int eccsize = chip->ecc.size, length = mtd->oobsize;
+- int i, len, pos, status = 0, sndcmd = 0, steps = chip->ecc.steps;
++ int chunk = chip->cur_ecc->bytes + chip->cur_ecc->prepad +
++ chip->cur_ecc->postpad;
++ int eccsize = chip->cur_ecc->size, length = mtd->oobsize;
++ int i, len, pos, status = 0, sndcmd = 0, steps = chip->cur_ecc->steps;
+ const uint8_t *bufpoi = chip->oob_poi;
+
+ /*
+@@ -1839,7 +1884,7 @@ static int nand_write_oob_syndrome(struct mtd_info *mtd,
+ * or
+ * data-pad-ecc-pad-data-pad .... ecc-pad-oob
+ */
+- if (!chip->ecc.prepad && !chip->ecc.postpad) {
++ if (!chip->cur_ecc->prepad && !chip->cur_ecc->postpad) {
+ pos = steps * (eccsize + chunk);
+ steps = 0;
+ } else
+@@ -1903,7 +1948,7 @@ static int nand_do_read_oob(struct mtd_info *mtd, loff_t from,
+ stats = mtd->ecc_stats;
+
+ if (ops->mode == MTD_OPS_AUTO_OOB)
+- len = chip->ecc.layout->oobavail;
++ len = chip->cur_ecc->layout->oobavail;
+ else
+ len = mtd->oobsize;
+
+@@ -1931,9 +1976,9 @@ static int nand_do_read_oob(struct mtd_info *mtd, loff_t from,
+
+ while (1) {
+ if (ops->mode == MTD_OPS_RAW)
+- ret = chip->ecc.read_oob_raw(mtd, chip, page);
++ ret = chip->cur_ecc->read_oob_raw(mtd, chip, page);
+ else
+- ret = chip->ecc.read_oob(mtd, chip, page);
++ ret = chip->cur_ecc->read_oob(mtd, chip, page);
+
+ if (ret < 0)
+ break;
+@@ -2021,6 +2066,56 @@ static int nand_read_oob(struct mtd_info *mtd, loff_t from,
+ return ret;
+ }
+
++/**
++ * nand_part_read_oob - [MTD Interface] NAND read data and/or out-of-band
++ * @mtd: MTD device structure
++ * @from: offset to read from
++ * @ops: oob operation description structure
++ *
++ * NAND read data and/or out-of-band data.
++ */
++static int nand_part_read_oob(struct mtd_info *mtd, loff_t from,
++ struct mtd_oob_ops *ops)
++{
++ struct nand_chip *chip = mtd->priv;
++ struct nand_part *part = to_nand_part(mtd);
++ int ret = -ENOTSUPP;
++
++ ops->retlen = 0;
++
++ /* Do not allow reads past end of device */
++ if (ops->datbuf && (from + ops->len) > mtd->size) {
++ pr_debug("%s: attempt to read beyond end of device\n",
++ __func__);
++ return -EINVAL;
++ }
++
++ from += part->offset;
++ nand_get_device(part->master, FL_READING);
++ if (part->ecc)
++ chip->cur_ecc = part->ecc;
++
++ switch (ops->mode) {
++ case MTD_OPS_PLACE_OOB:
++ case MTD_OPS_AUTO_OOB:
++ case MTD_OPS_RAW:
++ break;
++
++ default:
++ goto out;
++ }
++
++ if (!ops->datbuf)
++ ret = nand_do_read_oob(part->master, from, ops);
++ else
++ ret = nand_do_read_ops(part->master, from, ops);
++
++out:
++ chip->cur_ecc = &chip->ecc;
++ nand_release_device(part->master);
++ return ret;
++}
++
+
+ /**
+ * nand_write_page_raw - [INTERN] raw page write function
+@@ -2054,26 +2149,26 @@ static int nand_write_page_raw_syndrome(struct mtd_info *mtd,
+ struct nand_chip *chip,
+ const uint8_t *buf, int oob_required)
+ {
+- int eccsize = chip->ecc.size;
+- int eccbytes = chip->ecc.bytes;
++ int eccsize = chip->cur_ecc->size;
++ int eccbytes = chip->cur_ecc->bytes;
+ uint8_t *oob = chip->oob_poi;
+ int steps, size;
+
+- for (steps = chip->ecc.steps; steps > 0; steps--) {
++ for (steps = chip->cur_ecc->steps; steps > 0; steps--) {
+ chip->write_buf(mtd, buf, eccsize);
+ buf += eccsize;
+
+- if (chip->ecc.prepad) {
+- chip->write_buf(mtd, oob, chip->ecc.prepad);
+- oob += chip->ecc.prepad;
++ if (chip->cur_ecc->prepad) {
++ chip->write_buf(mtd, oob, chip->cur_ecc->prepad);
++ oob += chip->cur_ecc->prepad;
+ }
+
+ chip->write_buf(mtd, oob, eccbytes);
+ oob += eccbytes;
+
+- if (chip->ecc.postpad) {
+- chip->write_buf(mtd, oob, chip->ecc.postpad);
+- oob += chip->ecc.postpad;
++ if (chip->cur_ecc->postpad) {
++ chip->write_buf(mtd, oob, chip->cur_ecc->postpad);
++ oob += chip->cur_ecc->postpad;
+ }
+ }
+
+@@ -2093,21 +2188,21 @@ static int nand_write_page_raw_syndrome(struct mtd_info *mtd,
+ static int nand_write_page_swecc(struct mtd_info *mtd, struct nand_chip *chip,
+ const uint8_t *buf, int oob_required)
+ {
+- int i, eccsize = chip->ecc.size;
+- int eccbytes = chip->ecc.bytes;
+- int eccsteps = chip->ecc.steps;
++ int i, eccsize = chip->cur_ecc->size;
++ int eccbytes = chip->cur_ecc->bytes;
++ int eccsteps = chip->cur_ecc->steps;
+ uint8_t *ecc_calc = chip->buffers->ecccalc;
+ const uint8_t *p = buf;
+- uint32_t *eccpos = chip->ecc.layout->eccpos;
++ uint32_t *eccpos = chip->cur_ecc->layout->eccpos;
+
+ /* Software ECC calculation */
+ for (i = 0; eccsteps; eccsteps--, i += eccbytes, p += eccsize)
+- chip->ecc.calculate(mtd, p, &ecc_calc[i]);
++ chip->cur_ecc->calculate(mtd, p, &ecc_calc[i]);
+
+- for (i = 0; i < chip->ecc.total; i++)
++ for (i = 0; i < chip->cur_ecc->total; i++)
+ chip->oob_poi[eccpos[i]] = ecc_calc[i];
+
+- return chip->ecc.write_page_raw(mtd, chip, buf, 1);
++ return chip->cur_ecc->write_page_raw(mtd, chip, buf, 1);
+ }
+
+ /**
+@@ -2120,20 +2215,20 @@ static int nand_write_page_swecc(struct mtd_info *mtd, struct nand_chip *chip,
+ static int nand_write_page_hwecc(struct mtd_info *mtd, struct nand_chip *chip,
+ const uint8_t *buf, int oob_required)
+ {
+- int i, eccsize = chip->ecc.size;
+- int eccbytes = chip->ecc.bytes;
+- int eccsteps = chip->ecc.steps;
++ int i, eccsize = chip->cur_ecc->size;
++ int eccbytes = chip->cur_ecc->bytes;
++ int eccsteps = chip->cur_ecc->steps;
+ uint8_t *ecc_calc = chip->buffers->ecccalc;
+ const uint8_t *p = buf;
+- uint32_t *eccpos = chip->ecc.layout->eccpos;
++ uint32_t *eccpos = chip->cur_ecc->layout->eccpos;
+
+ for (i = 0; eccsteps; eccsteps--, i += eccbytes, p += eccsize) {
+- chip->ecc.hwctl(mtd, NAND_ECC_WRITE);
++ chip->cur_ecc->hwctl(mtd, NAND_ECC_WRITE);
+ chip->write_buf(mtd, p, eccsize);
+- chip->ecc.calculate(mtd, p, &ecc_calc[i]);
++ chip->cur_ecc->calculate(mtd, p, &ecc_calc[i]);
+ }
+
+- for (i = 0; i < chip->ecc.total; i++)
++ for (i = 0; i < chip->cur_ecc->total; i++)
+ chip->oob_poi[eccpos[i]] = ecc_calc[i];
+
+ chip->write_buf(mtd, chip->oob_poi, mtd->oobsize);
+@@ -2158,10 +2253,10 @@ static int nand_write_subpage_hwecc(struct mtd_info *mtd,
+ {
+ uint8_t *oob_buf = chip->oob_poi;
+ uint8_t *ecc_calc = chip->buffers->ecccalc;
+- int ecc_size = chip->ecc.size;
+- int ecc_bytes = chip->ecc.bytes;
+- int ecc_steps = chip->ecc.steps;
+- uint32_t *eccpos = chip->ecc.layout->eccpos;
++ int ecc_size = chip->cur_ecc->size;
++ int ecc_bytes = chip->cur_ecc->bytes;
++ int ecc_steps = chip->cur_ecc->steps;
++ uint32_t *eccpos = chip->cur_ecc->layout->eccpos;
+ uint32_t start_step = offset / ecc_size;
+ uint32_t end_step = (offset + data_len - 1) / ecc_size;
+ int oob_bytes = mtd->oobsize / ecc_steps;
+@@ -2169,7 +2264,7 @@ static int nand_write_subpage_hwecc(struct mtd_info *mtd,
+
+ for (step = 0; step < ecc_steps; step++) {
+ /* configure controller for WRITE access */
+- chip->ecc.hwctl(mtd, NAND_ECC_WRITE);
++ chip->cur_ecc->hwctl(mtd, NAND_ECC_WRITE);
+
+ /* write data (untouched subpages already masked by 0xFF) */
+ chip->write_buf(mtd, buf, ecc_size);
+@@ -2178,7 +2273,7 @@ static int nand_write_subpage_hwecc(struct mtd_info *mtd,
+ if ((step < start_step) || (step > end_step))
+ memset(ecc_calc, 0xff, ecc_bytes);
+ else
+- chip->ecc.calculate(mtd, buf, ecc_calc);
++ chip->cur_ecc->calculate(mtd, buf, ecc_calc);
+
+ /* mask OOB of un-touched subpages by padding 0xFF */
+ /* if oob_required, preserve OOB metadata of written subpage */
+@@ -2193,7 +2288,7 @@ static int nand_write_subpage_hwecc(struct mtd_info *mtd,
+ /* copy calculated ECC for whole page to chip->buffer->oob */
+ /* this include masked-value(0xFF) for unwritten subpages */
+ ecc_calc = chip->buffers->ecccalc;
+- for (i = 0; i < chip->ecc.total; i++)
++ for (i = 0; i < chip->cur_ecc->total; i++)
+ chip->oob_poi[eccpos[i]] = ecc_calc[i];
+
+ /* write OOB buffer to NAND device */
+@@ -2217,29 +2312,29 @@ static int nand_write_page_syndrome(struct mtd_info *mtd,
+ struct nand_chip *chip,
+ const uint8_t *buf, int oob_required)
+ {
+- int i, eccsize = chip->ecc.size;
+- int eccbytes = chip->ecc.bytes;
+- int eccsteps = chip->ecc.steps;
++ int i, eccsize = chip->cur_ecc->size;
++ int eccbytes = chip->cur_ecc->bytes;
++ int eccsteps = chip->cur_ecc->steps;
+ const uint8_t *p = buf;
+ uint8_t *oob = chip->oob_poi;
+
+ for (i = 0; eccsteps; eccsteps--, i += eccbytes, p += eccsize) {
+
+- chip->ecc.hwctl(mtd, NAND_ECC_WRITE);
++ chip->cur_ecc->hwctl(mtd, NAND_ECC_WRITE);
+ chip->write_buf(mtd, p, eccsize);
+
+- if (chip->ecc.prepad) {
+- chip->write_buf(mtd, oob, chip->ecc.prepad);
+- oob += chip->ecc.prepad;
++ if (chip->cur_ecc->prepad) {
++ chip->write_buf(mtd, oob, chip->cur_ecc->prepad);
++ oob += chip->cur_ecc->prepad;
+ }
+
+- chip->ecc.calculate(mtd, p, oob);
++ chip->cur_ecc->calculate(mtd, p, oob);
+ chip->write_buf(mtd, oob, eccbytes);
+ oob += eccbytes;
+
+- if (chip->ecc.postpad) {
+- chip->write_buf(mtd, oob, chip->ecc.postpad);
+- oob += chip->ecc.postpad;
++ if (chip->cur_ecc->postpad) {
++ chip->write_buf(mtd, oob, chip->cur_ecc->postpad);
++ oob += chip->cur_ecc->postpad;
+ }
+ }
+
+@@ -2270,7 +2365,7 @@ static int nand_write_page(struct mtd_info *mtd, struct nand_chip *chip,
+ int status, subpage;
+
+ if (!(chip->options & NAND_NO_SUBPAGE_WRITE) &&
+- chip->ecc.write_subpage)
++ chip->cur_ecc->write_subpage)
+ subpage = offset || (data_len < mtd->writesize);
+ else
+ subpage = 0;
+@@ -2278,13 +2373,15 @@ static int nand_write_page(struct mtd_info *mtd, struct nand_chip *chip,
+ chip->cmdfunc(mtd, NAND_CMD_SEQIN, 0x00, page);
+
+ if (unlikely(raw))
+- status = chip->ecc.write_page_raw(mtd, chip, buf,
+- oob_required);
++ status = chip->cur_ecc->write_page_raw(mtd, chip, buf,
++ oob_required);
+ else if (subpage)
+- status = chip->ecc.write_subpage(mtd, chip, offset, data_len,
+- buf, oob_required);
++ status = chip->cur_ecc->write_subpage(mtd, chip, offset,
++ data_len, buf,
++ oob_required);
+ else
+- status = chip->ecc.write_page(mtd, chip, buf, oob_required);
++ status = chip->cur_ecc->write_page(mtd, chip, buf,
++ oob_required);
+
+ if (status < 0)
+ return status;
+@@ -2343,7 +2440,7 @@ static uint8_t *nand_fill_oob(struct mtd_info *mtd, uint8_t *oob, size_t len,
+ return oob + len;
+
+ case MTD_OPS_AUTO_OOB: {
+- struct nand_oobfree *free = chip->ecc.layout->oobfree;
++ struct nand_oobfree *free = chip->cur_ecc->layout->oobfree;
+ uint32_t boffs = 0, woffs = ops->ooboffs;
+ size_t bytes = 0;
+
+@@ -2539,6 +2636,46 @@ static int panic_nand_write(struct mtd_info *mtd, loff_t to, size_t len,
+ }
+
+ /**
++ * panic_nand_part_write - [MTD Interface] NAND write with ECC
++ * @mtd: MTD device structure
++ * @to: offset to write to
++ * @len: number of bytes to write
++ * @retlen: pointer to variable to store the number of written bytes
++ * @buf: the data to write
++ *
++ * NAND write with ECC. Used when performing writes in interrupt context, this
++ * may for example be called by mtdoops when writing an oops while in panic.
++ */
++static int panic_nand_part_write(struct mtd_info *mtd, loff_t to, size_t len,
++ size_t *retlen, const uint8_t *buf)
++{
++ struct nand_chip *chip = mtd->priv;
++ struct nand_part *part = to_nand_part(mtd);
++ struct mtd_oob_ops ops;
++ int ret;
++
++ to += part->offset;
++ /* Wait for the device to get ready */
++ panic_nand_wait(part->master, chip, 400);
++
++ /* Grab the device */
++ panic_nand_get_device(chip, part->master, FL_WRITING);
++ if (part->ecc)
++ chip->cur_ecc = part->ecc;
++
++ ops.len = len;
++ ops.datbuf = (uint8_t *)buf;
++ ops.oobbuf = NULL;
++ ops.mode = MTD_OPS_PLACE_OOB;
++
++ ret = nand_do_write_ops(part->master, to, &ops);
++
++ chip->cur_ecc = &chip->ecc;
++ *retlen = ops.retlen;
++ return ret;
++}
++
++/**
+ * nand_write - [MTD Interface] NAND write with ECC
+ * @mtd: MTD device structure
+ * @to: offset to write to
+@@ -2566,6 +2703,39 @@ static int nand_write(struct mtd_info *mtd, loff_t to, size_t len,
+ }
+
+ /**
++ * nand_part_write - [MTD Interface] NAND write with ECC
++ * @mtd: MTD device structure
++ * @to: offset to write to
++ * @len: number of bytes to write
++ * @retlen: pointer to variable to store the number of written bytes
++ * @buf: the data to write
++ *
++ * NAND write with ECC.
++ */
++static int nand_part_write(struct mtd_info *mtd, loff_t to, size_t len,
++ size_t *retlen, const uint8_t *buf)
++{
++ struct nand_chip *chip = mtd->priv;
++ struct nand_part *part = to_nand_part(mtd);
++ struct mtd_oob_ops ops;
++ int ret;
++
++ to += part->offset;
++ nand_get_device(part->master, FL_WRITING);
++ if (part->ecc)
++ chip->cur_ecc = part->ecc;
++ ops.len = len;
++ ops.datbuf = (uint8_t *)buf;
++ ops.oobbuf = NULL;
++ ops.mode = MTD_OPS_PLACE_OOB;
++ ret = nand_do_write_ops(part->master, to, &ops);
++ *retlen = ops.retlen;
++ chip->cur_ecc = &chip->ecc;
++ nand_release_device(part->master);
++ return ret;
++}
++
++/**
+ * nand_do_write_oob - [MTD Interface] NAND write out-of-band
+ * @mtd: MTD device structure
+ * @to: offset to write to
+@@ -2583,7 +2753,7 @@ static int nand_do_write_oob(struct mtd_info *mtd, loff_t to,
+ __func__, (unsigned int)to, (int)ops->ooblen);
+
+ if (ops->mode == MTD_OPS_AUTO_OOB)
+- len = chip->ecc.layout->oobavail;
++ len = chip->cur_ecc->layout->oobavail;
+ else
+ len = mtd->oobsize;
+
+@@ -2637,9 +2807,11 @@ static int nand_do_write_oob(struct mtd_info *mtd, loff_t to,
+ nand_fill_oob(mtd, ops->oobbuf, ops->ooblen, ops);
+
+ if (ops->mode == MTD_OPS_RAW)
+- status = chip->ecc.write_oob_raw(mtd, chip, page & chip->pagemask);
++ status = chip->cur_ecc->write_oob_raw(mtd, chip,
++ page & chip->pagemask);
+ else
+- status = chip->ecc.write_oob(mtd, chip, page & chip->pagemask);
++ status = chip->cur_ecc->write_oob(mtd, chip,
++ page & chip->pagemask);
+
+ chip->select_chip(mtd, -1);
+
+@@ -2694,6 +2866,54 @@ static int nand_write_oob(struct mtd_info *mtd, loff_t to,
+ }
+
+ /**
++ * nand_write_oob - [MTD Interface] NAND write data and/or out-of-band
++ * @mtd: MTD device structure
++ * @to: offset to write to
++ * @ops: oob operation description structure
++ */
++static int nand_part_write_oob(struct mtd_info *mtd, loff_t to,
++ struct mtd_oob_ops *ops)
++{
++ struct nand_chip *chip = mtd->priv;
++ struct nand_part *part = to_nand_part(mtd);
++ int ret = -ENOTSUPP;
++
++ ops->retlen = 0;
++
++ /* Do not allow writes past end of device */
++ if (ops->datbuf && (to + ops->len) > mtd->size) {
++ pr_debug("%s: attempt to write beyond end of device\n",
++ __func__);
++ return -EINVAL;
++ }
++
++ to += part->offset;
++ nand_get_device(part->master, FL_WRITING);
++ if (part->ecc)
++ chip->cur_ecc = part->ecc;
++
++ switch (ops->mode) {
++ case MTD_OPS_PLACE_OOB:
++ case MTD_OPS_AUTO_OOB:
++ case MTD_OPS_RAW:
++ break;
++
++ default:
++ goto out;
++ }
++
++ if (!ops->datbuf)
++ ret = nand_do_write_oob(part->master, to, ops);
++ else
++ ret = nand_do_write_ops(part->master, to, ops);
++
++out:
++ chip->cur_ecc = &chip->ecc;
++ nand_release_device(part->master);
++ return ret;
++}
++
++/**
+ * single_erase - [GENERIC] NAND standard block erase command function
+ * @mtd: MTD device structure
+ * @page: the page address of the block which will be erased
+@@ -2723,6 +2943,29 @@ static int nand_erase(struct mtd_info *mtd, struct erase_info *instr)
+ }
+
+ /**
++ * nand_part_erase - [MTD Interface] erase partition block(s)
++ * @mtd: MTD device structure
++ * @instr: erase instruction
++ *
++ * Erase one ore more blocks.
++ */
++static int nand_part_erase(struct mtd_info *mtd, struct erase_info *instr)
++{
++ struct nand_part *part = to_nand_part(mtd);
++ int ret;
++
++ instr->addr += part->offset;
++ ret = nand_erase_nand(part->master, instr, 0);
++ if (ret) {
++ if (instr->fail_addr != MTD_FAIL_ADDR_UNKNOWN)
++ instr->fail_addr -= part->offset;
++ instr->addr -= part->offset;
++ }
++
++ return ret;
++}
++
++/**
+ * nand_erase_nand - [INTERN] erase block(s)
+ * @mtd: MTD device structure
+ * @instr: erase instruction
+@@ -2864,6 +3107,18 @@ static int nand_block_isbad(struct mtd_info *mtd, loff_t offs)
+ }
+
+ /**
++ * nand_part_block_isbad - [MTD Interface] Check if block at offset is bad
++ * @mtd: MTD device structure
++ * @offs: offset relative to mtd start
++ */
++static int nand_part_block_isbad(struct mtd_info *mtd, loff_t offs)
++{
++ struct nand_part *part = to_nand_part(mtd);
++
++ return nand_block_checkbad(part->master, part->offset + offs, 1, 0);
++}
++
++/**
+ * nand_block_markbad - [MTD Interface] Mark block at the given offset as bad
+ * @mtd: MTD device structure
+ * @ofs: offset relative to mtd start
+@@ -2884,6 +3139,33 @@ static int nand_block_markbad(struct mtd_info *mtd, loff_t ofs)
+ }
+
+ /**
++ * nand_part_block_markbad - [MTD Interface] Mark block at the given offset as
++ * bad
++ * @mtd: MTD device structure
++ * @ofs: offset relative to mtd start
++ */
++static int nand_part_block_markbad(struct mtd_info *mtd, loff_t ofs)
++{
++ struct nand_part *part = to_nand_part(mtd);
++ int ret;
++
++ ofs += part->offset;
++ ret = nand_block_isbad(part->master, ofs);
++ if (ret) {
++ /* If it was bad already, return success and do nothing */
++ if (ret > 0)
++ return 0;
++ return ret;
++ }
++
++ ret = nand_block_markbad_lowlevel(part->master, ofs);
++ if (!ret)
++ mtd->ecc_stats.badblocks++;
++
++ return ret;
++}
++
++/**
+ * nand_onfi_set_features- [REPLACEABLE] set features for ONFI nand
+ * @mtd: MTD device structure
+ * @chip: nand chip info structure
+@@ -4099,6 +4381,169 @@ static int nand_ecc_ctrl_init(struct mtd_info *mtd, struct nand_ecc_ctrl *ecc)
+ }
+
+ /**
++ * nand_add_partition - [NAND Interface] Add a NAND partition to a NAND device
++ * @master: MTD device structure representing the NAND device
++ * @part: NAND partition to add to the NAND device
++ *
++ * Adds a NAND partition to a NAND device.
++ * The NAND partition cannot overlap with another existing partition.
++ *
++ * Returns zero in case of success and a negative error code in case of failure.
++ */
++int nand_add_partition(struct mtd_info *master, struct nand_part *part)
++{
++ struct nand_chip *chip = master->priv;
++ struct mtd_info *mtd = &part->mtd;
++ struct nand_ecc_ctrl *ecc = part->ecc;
++ struct nand_part *pos;
++ bool inserted = false;
++ int ret;
++
++ /* set up the MTD object for this partition */
++ mtd->type = master->type;
++ mtd->flags = master->flags & ~mtd->flags;
++ mtd->writesize = master->writesize;
++ mtd->writebufsize = master->writebufsize;
++ mtd->oobsize = master->oobsize;
++ mtd->oobavail = master->oobavail;
++ mtd->subpage_sft = master->subpage_sft;
++ mtd->erasesize = master->erasesize;
++
++ mtd->priv = chip;
++ mtd->owner = master->owner;
++ mtd->backing_dev_info = master->backing_dev_info;
++
++ mtd->dev.parent = master->dev.parent;
++
++ if (ecc) {
++ ret = nand_ecc_ctrl_init(mtd, ecc);
++ if (ret)
++ return ret;
++ } else {
++ ecc = &chip->ecc;
++ }
++
++ mtd->_erase = nand_part_erase;
++ mtd->_point = NULL;
++ mtd->_unpoint = NULL;
++ mtd->_read = nand_part_read;
++ mtd->_write = nand_part_write;
++ mtd->_panic_write = panic_nand_part_write;
++ mtd->_read_oob = nand_part_read_oob;
++ mtd->_write_oob = nand_part_write_oob;
++ mtd->_sync = nand_sync;
++ mtd->_lock = NULL;
++ mtd->_unlock = NULL;
++ mtd->_suspend = nand_suspend;
++ mtd->_resume = nand_resume;
++ mtd->_block_isbad = nand_part_block_isbad;
++ mtd->_block_markbad = nand_part_block_markbad;
++
++ /* propagate ecc info to mtd_info */
++ mtd->ecclayout = ecc->layout;
++ mtd->ecc_strength = ecc->strength;
++ mtd->ecc_step_size = ecc->size;
++ /*
++ * Initialize bitflip_threshold to its default prior scan_bbt() call.
++ * scan_bbt() might invoke mtd_read(), thus bitflip_threshold must be
++ * properly set.
++ */
++ if (!mtd->bitflip_threshold)
++ mtd->bitflip_threshold = mtd->ecc_strength;
++
++ part->master = master;
++
++ mutex_lock(&chip->part_lock);
++ list_for_each_entry(pos, &chip->partitions, node) {
++ if (part->offset >= pos->offset + pos->mtd.size) {
++ continue;
++ } else if (part->offset + mtd->size > pos->offset) {
++ ret = -EINVAL;
++ goto out;
++ }
++
++ list_add(&part->node, pos->node.prev);
++ inserted = true;
++ break;
++ }
++
++ if (!inserted)
++ list_add_tail(&part->node, &chip->partitions);
++
++ ret = mtd_device_register(mtd, NULL, 0);
++ if (ret) {
++ list_del(&part->node);
++ goto out;
++ }
++
++ if (master->_block_isbad) {
++ uint64_t offs = 0;
++
++ while (offs < mtd->size) {
++ if (mtd_block_isreserved(master, offs + part->offset))
++ mtd->ecc_stats.bbtblocks++;
++ else if (mtd_block_isbad(master, offs + part->offset))
++ mtd->ecc_stats.badblocks++;
++ offs += mtd->erasesize;
++ }
++ }
++
++out:
++ mutex_unlock(&chip->part_lock);
++ return ret;
++}
++EXPORT_SYMBOL(nand_add_partition);
++
++/**
++ * nand_del_partition - [NAND Interface] Delete a NAND part from a NAND dev
++ * @part: NAND partition to delete
++ *
++ * Deletes a NAND partition from a NAND device.
++ */
++void nand_del_partition(struct nand_part *part)
++{
++ struct nand_chip *chip = part->mtd.priv;
++
++ mutex_lock(&chip->part_lock);
++ mtd_device_unregister(&part->mtd);
++ list_del(&part->node);
++ mutex_unlock(&chip->part_lock);
++
++ if (part->ecc && part->ecc->mode == NAND_ECC_SOFT_BCH)
++ nand_bch_free((struct nand_bch_control *)part->ecc->priv);
++
++ if (part->release)
++ part->release(part);
++}
++EXPORT_SYMBOL(nand_del_partition);
++
++/*
++ * NAND part release function. Used by nandpart_alloc as its release function.
++ */
++static void nandpart_release(struct nand_part *part)
++{
++ kfree(part);
++}
++
++/**
++ * nandpart_alloc - [NAND Interface] Allocate a NAND part struct
++ *
++ * Allocate a NAND partition and assign the nandpart release function.
++ * This nand_part struct must be filled before passing it to the
++ * nand_add_partition function.
++ */
++struct nand_part *nandpart_alloc(void)
++{
++ struct nand_part *part = kzalloc(sizeof(*part), GFP_KERNEL);
++ if (!part)
++ return ERR_PTR(-ENOMEM);
++ part->release = nandpart_release;
++
++ return part;
++}
++EXPORT_SYMBOL(nandpart_alloc);
++
++/**
+ * nand_scan_tail - [NAND Interface] Scan for the NAND device
+ * @mtd: MTD device structure
+ *
+@@ -4146,6 +4591,11 @@ int nand_scan_tail(struct mtd_info *mtd)
+ return ret;
+ }
+
++ INIT_LIST_HEAD(&chip->partitions);
++ mutex_init(&chip->part_lock);
++
++ chip->cur_ecc = &chip->ecc;
++
+ /* Allow subpage writes up to ecc.steps. Not possible for MLC flash */
+ if (!(chip->options & NAND_NO_SUBPAGE_WRITE) && nand_is_slc(chip)) {
+ switch (ecc->steps) {
+diff --git a/drivers/mtd/nand/nand_bch.c b/drivers/mtd/nand/nand_bch.c
+index 3803e0b..b82b976 100644
+--- a/drivers/mtd/nand/nand_bch.c
++++ b/drivers/mtd/nand/nand_bch.c
+@@ -53,14 +53,14 @@ int nand_bch_calculate_ecc(struct mtd_info *mtd, const unsigned char *buf,
+ unsigned char *code)
+ {
+ const struct nand_chip *chip = mtd->priv;
+- struct nand_bch_control *nbc = chip->ecc.priv;
++ struct nand_bch_control *nbc = chip->cur_ecc->priv;
+ unsigned int i;
+
+- memset(code, 0, chip->ecc.bytes);
+- encode_bch(nbc->bch, buf, chip->ecc.size, code);
++ memset(code, 0, chip->cur_ecc->bytes);
++ encode_bch(nbc->bch, buf, chip->cur_ecc->size, code);
+
+ /* apply mask so that an erased page is a valid codeword */
+- for (i = 0; i < chip->ecc.bytes; i++)
++ for (i = 0; i < chip->cur_ecc->bytes; i++)
+ code[i] ^= nbc->eccmask[i];
+
+ return 0;
+@@ -80,15 +80,15 @@ int nand_bch_correct_data(struct mtd_info *mtd, unsigned char *buf,
+ unsigned char *read_ecc, unsigned char *calc_ecc)
+ {
+ const struct nand_chip *chip = mtd->priv;
+- struct nand_bch_control *nbc = chip->ecc.priv;
++ struct nand_bch_control *nbc = chip->cur_ecc->priv;
+ unsigned int *errloc = nbc->errloc;
+ int i, count;
+
+- count = decode_bch(nbc->bch, NULL, chip->ecc.size, read_ecc, calc_ecc,
+- NULL, errloc);
++ count = decode_bch(nbc->bch, NULL, chip->cur_ecc->size, read_ecc,
++ calc_ecc, NULL, errloc);
+ if (count > 0) {
+ for (i = 0; i < count; i++) {
+- if (errloc[i] < (chip->ecc.size*8))
++ if (errloc[i] < (chip->cur_ecc->size*8))
+ /* error is located in data, correct it */
+ buf[errloc[i] >> 3] ^= (1 << (errloc[i] & 7));
+ /* else error in ecc, no action needed */
+diff --git a/drivers/mtd/nand/nand_ecc.c b/drivers/mtd/nand/nand_ecc.c
+index 97c4c02..f35c418 100644
+--- a/drivers/mtd/nand/nand_ecc.c
++++ b/drivers/mtd/nand/nand_ecc.c
+@@ -424,7 +424,7 @@ int nand_calculate_ecc(struct mtd_info *mtd, const unsigned char *buf,
+ unsigned char *code)
+ {
+ __nand_calculate_ecc(buf,
+- ((struct nand_chip *)mtd->priv)->ecc.size, code);
++ ((struct nand_chip *)mtd->priv)->cur_ecc->size, code);
+
+ return 0;
+ }
+@@ -524,7 +524,7 @@ int nand_correct_data(struct mtd_info *mtd, unsigned char *buf,
+ unsigned char *read_ecc, unsigned char *calc_ecc)
+ {
+ return __nand_correct_data(buf, read_ecc, calc_ecc,
+- ((struct nand_chip *)mtd->priv)->ecc.size);
++ ((struct nand_chip *)mtd->priv)->cur_ecc->size);
+ }
+ EXPORT_SYMBOL(nand_correct_data);
+
+diff --git a/include/linux/mtd/nand.h b/include/linux/mtd/nand.h
+index 3d4ea7e..510e09b 100644
+--- a/include/linux/mtd/nand.h
++++ b/include/linux/mtd/nand.h
+@@ -708,6 +708,7 @@ struct nand_chip {
+ struct nand_hw_control *controller;
+
+ struct nand_ecc_ctrl ecc;
++ struct nand_ecc_ctrl *cur_ecc;
+ struct nand_buffers *buffers;
+ struct nand_hw_control hwcontrol;
+
+@@ -717,9 +718,46 @@ struct nand_chip {
+
+ struct nand_bbt_descr *badblock_pattern;
+
++ struct list_head partitions;
++ struct mutex part_lock;
++
+ void *priv;
+ };
+
++/**
++ * struct nand_part - NAND partition structure
++ * @node: list node used to attach the partition to its NAND dev
++ * @mtd: MTD partiton info
++ * @master: MTD device representing the NAND chip
++ * @offset: partition offset
++ * @ecc: partition specific ECC struct
++ * @release: function used to release this nand_part struct
++ *
++ * NAND partitions work as standard MTD partitions except it can override
++ * NAND chip ECC handling.
++ * This is particularly useful for SoCs that need specific ECC configs to boot
++ * from NAND while these ECC configs do not fit the NAND chip ECC requirements.
++ */
++struct nand_part {
++ struct list_head node;
++ struct mtd_info mtd;
++ struct mtd_info *master;
++ uint64_t offset;
++ struct nand_ecc_ctrl *ecc;
++ void (*release)(struct nand_part *part);
++};
++
++static inline struct nand_part *to_nand_part(struct mtd_info *mtd)
++{
++ return container_of(mtd, struct nand_part, mtd);
++}
++
++int nand_add_partition(struct mtd_info *master, struct nand_part *part);
++
++void nand_del_partition(struct nand_part *part);
++
++struct nand_part *nandpart_alloc(void);
++
+ /*
+ * NAND Flash Manufacturer ID Codes
+ */
--- /dev/null
+From 0460e9868fd82a3675db02f6ceb6edfd8501c194 Mon Sep 17 00:00:00 2001
+From: Boris BREZILLON <boris.brezillon@free-electrons.com>
+Date: Mon, 28 Jul 2014 14:31:42 +0200
+Subject: [PATCH] mtd: nand: Add DT NAND partition parser
+
+Add a of_nandpart_parse function to help parsing NAND partitions from DT.
+This function should be called from NAND controller drivers just after the
+nand_scan_tail in place of mtd_device_parse_register.
+The caller can specify a parser function to retrieve HW specific
+informations from the DT.
+
+Signed-off-by: Boris BREZILLON <boris.brezillon@free-electrons.com>
+Signed-off-by: Hans de Goede <hdegoede@redhat.com>
+---
+ drivers/mtd/nand/ofnandpart.c | 104 ++++++++++++++++++++++++++++++++++++++++++
+ include/linux/mtd/nand.h | 17 +++++++
+ 2 files changed, 121 insertions(+)
+ create mode 100644 drivers/mtd/nand/ofnandpart.c
+
+diff --git a/drivers/mtd/nand/ofnandpart.c b/drivers/mtd/nand/ofnandpart.c
+new file mode 100644
+index 0000000..293daee
+--- /dev/null
++++ b/drivers/mtd/nand/ofnandpart.c
+@@ -0,0 +1,104 @@
++/*
++ * NAND Flash partitions described by the OF (or flattened) device tree
++ *
++ * Copyright © 2014 Boris BREZILLON <b.brezillon.dev@gmail.com>
++ *
++ * This program is free software; you can redistribute it and/or modify it
++ * under the terms of the GNU General Public License as published by the
++ * Free Software Foundation; either version 2 of the License, or (at your
++ * option) any later version.
++ */
++
++#include <linux/module.h>
++#include <linux/init.h>
++#include <linux/of.h>
++#include <linux/mtd/mtd.h>
++#include <linux/slab.h>
++#include <linux/mtd/nand.h>
++
++static inline bool node_has_compatible(struct device_node *pp)
++{
++ return of_get_property(pp, "compatible", NULL);
++}
++
++int ofnandpart_parse(struct mtd_info *master,
++ const struct ofnandpart_data *data)
++{
++ struct device_node *node;
++ const char *partname;
++ struct device_node *pp;
++ int i;
++
++ if (!data)
++ return 0;
++
++ node = data->node;
++ if (!node)
++ return 0;
++
++ i = 0;
++ for_each_child_of_node(node, pp) {
++ const __be32 *reg;
++ int len;
++ int a_cells, s_cells;
++ uint64_t offset, size;
++ uint32_t mask_flags = 0;
++ struct nand_part *part;
++
++ if (node_has_compatible(pp))
++ continue;
++
++ reg = of_get_property(pp, "reg", &len);
++ if (!reg)
++ continue;
++
++ a_cells = of_n_addr_cells(pp);
++ s_cells = of_n_size_cells(pp);
++ offset = of_read_number(reg, a_cells);
++ size = of_read_number(reg + a_cells, s_cells);
++
++ partname = of_get_property(pp, "label", &len);
++ if (!partname)
++ partname = of_get_property(pp, "name", &len);
++
++ if (of_get_property(pp, "read-only", &len))
++ mask_flags |= MTD_WRITEABLE;
++
++ if (of_get_property(pp, "lock", &len))
++ mask_flags |= MTD_POWERUP_LOCK;
++
++ if (data->parse)
++ part = data->parse(data->priv, master, pp);
++ else
++ part = nandpart_alloc();
++
++ if (IS_ERR(part))
++ continue;
++
++ part->offset = offset;
++ part->master = master;
++ part->mtd.name = partname;
++ part->mtd.size = size;
++ part->mtd.flags = mask_flags;
++
++ if (nand_add_partition(master, part)) {
++ if (part->release)
++ part->release(part);
++ continue;
++ }
++
++ i++;
++ }
++
++ if (!i) {
++ of_node_put(pp);
++ pr_err("No valid partition found on %s\n", node->full_name);
++ }
++
++ return i;
++}
++EXPORT_SYMBOL(ofnandpart_parse);
++
++MODULE_LICENSE("GPL");
++MODULE_DESCRIPTION("Parser for NAND flash partitioning information in device tree");
++MODULE_AUTHOR("Boris BREZILLON");
+diff --git a/include/linux/mtd/nand.h b/include/linux/mtd/nand.h
+index 510e09b..5616f51 100644
+--- a/include/linux/mtd/nand.h
++++ b/include/linux/mtd/nand.h
+@@ -1013,6 +1013,23 @@ static inline int jedec_feature(struct nand_chip *chip)
+ : 0;
+ }
+
++/**
++ * struct ofnandpart_data - struct used to retrieve NAND partitions from a DT
++ * node
++ * @parse: driver specific parser function
++ * @priv: driver private data
++ * @node: OF node containing NAND partitions
++ */
++struct ofnandpart_data {
++ struct nand_part *(*parse)(void *priv, struct mtd_info *master,
++ struct device_node *pp);
++ void *priv;
++ struct device_node *node;
++};
++
++int ofnandpart_parse(struct mtd_info *master,
++ const struct ofnandpart_data *data);
++
+ /*
+ * struct nand_sdr_timings - SDR NAND chip timings
+ *
--- /dev/null
+From bec69bb8e85151729014d859106dcc3fe652b1d4 Mon Sep 17 00:00:00 2001
+From: Boris BREZILLON <boris.brezillon@free-electrons.com>
+Date: Mon, 28 Jul 2014 14:45:40 +0200
+Subject: [PATCH] mtd: nand: Add page status table (pst)
+
+Page status table is an byte array storing pages status.
+It defines 3 status:
+ - unknown: the page has not been read yet and we do not know its current
+ state
+ - empty: the page contains only FFs
+ - filled: the page has been filled with data
+
+Care must be taken: an empty page does not mean it can be written, because
+it might have already been written with only FFs.
+
+These page status are useful to check wether the controller should try to
+correct errors (using ECC) or a derandomize data (using a randomizer
+block).
+
+Signed-off-by: Boris BREZILLON <boris.brezillon@free-electrons.com>
+Signed-off-by: Hans de Goede <hdegoede@redhat.com>
+---
+ drivers/mtd/nand/nand_base.c | 154 +++++++++++++++++++++++++++++++++++++++++++
+ include/linux/mtd/nand.h | 21 ++++++
+ 2 files changed, 175 insertions(+)
+
+diff --git a/drivers/mtd/nand/nand_base.c b/drivers/mtd/nand/nand_base.c
+index a30b67f..8a5d12e 100644
+--- a/drivers/mtd/nand/nand_base.c
++++ b/drivers/mtd/nand/nand_base.c
+@@ -1102,6 +1102,138 @@ int nand_lock(struct mtd_info *mtd, loff_t ofs, uint64_t len)
+ EXPORT_SYMBOL(nand_lock);
+
+ /**
++ * nand_page_is_empty - check wether a NAND page contains only FFs
++ * @mtd: mtd info
++ * @data: data buffer
++ * @oob: oob buffer
++ *
++ * Reads the data stored in the databuf buffer and check if it contains only
++ * FFs.
++ *
++ * Return true if it does else return false.
++ */
++bool nand_page_is_empty(struct mtd_info *mtd, void *data, void *oob)
++{
++ u8 *buf;
++ int length;
++ u32 pattern = 0xffffffff;
++ int bitflips = 0;
++ int cnt;
++
++ buf = data;
++ length = mtd->writesize;
++ while (length) {
++ cnt = length < sizeof(pattern) ? length : sizeof(pattern);
++ if (memcmp(&pattern, buf, cnt)) {
++ int i;
++ for (i = 0; i < cnt * BITS_PER_BYTE; i++) {
++ if (!(buf[i / BITS_PER_BYTE] &
++ (1 << (i % BITS_PER_BYTE)))) {
++ bitflips++;
++ if (bitflips > mtd->ecc_strength)
++ return false;
++ }
++ }
++ }
++
++ buf += sizeof(pattern);
++ length -= sizeof(pattern);
++ }
++
++ buf = oob;
++ length = mtd->oobsize;
++ while (length) {
++ cnt = length < sizeof(pattern) ? length : sizeof(pattern);
++ if (memcmp(&pattern, buf, cnt)) {
++ int i;
++ for (i = 0; i < cnt * BITS_PER_BYTE; i++) {
++ if (!(buf[i / BITS_PER_BYTE] &
++ (1 << (i % BITS_PER_BYTE)))) {
++ bitflips++;
++ if (bitflips > mtd->ecc_strength)
++ return false;
++ }
++ }
++ }
++
++ buf += sizeof(pattern);
++ length -= sizeof(pattern);
++ }
++
++ return true;
++}
++EXPORT_SYMBOL(nand_page_is_empty);
++
++/**
++ * nand_page_get_status - retrieve page status from the page status table (pst)
++ * @mtd: mtd info
++ * @page: page you want to get status on
++ *
++ * Return the page status.
++ */
++int nand_page_get_status(struct mtd_info *mtd, int page)
++{
++ struct nand_chip *chip = mtd->priv;
++ u8 shift = (page % 4) * 2;
++ uint64_t offset = page / 4;
++ int ret = NAND_PAGE_STATUS_UNKNOWN;
++
++ if (chip->pst)
++ ret = (chip->pst[offset] >> shift) & 0x3;
++
++ return ret;
++}
++EXPORT_SYMBOL(nand_page_get_status);
++
++/**
++ * nand_page_set_status - assign page status from in the page status table
++ * @mtd: mtd info
++ * @page: page you want to get status on
++ * @status: new status to assign
++ */
++void nand_page_set_status(struct mtd_info *mtd, int page,
++ enum nand_page_status status)
++{
++ struct nand_chip *chip = mtd->priv;
++ u8 shift;
++ uint64_t offset;
++
++ if (!chip->pst)
++ return;
++
++ shift = (page % 4) * 2;
++ offset = page / 4;
++ chip->pst[offset] &= ~(0x3 << shift);
++ chip->pst[offset] |= (status & 0x3) << shift;
++}
++EXPORT_SYMBOL(nand_page_set_status);
++
++/**
++ * nand_pst_create - create a page status table
++ * @mtd: mtd info
++ *
++ * Allocate a page status table and assign it to the mtd device.
++ *
++ * Returns 0 in case of success or -ERRNO in case of error.
++ */
++int nand_pst_create(struct mtd_info *mtd)
++{
++ struct nand_chip *chip = mtd->priv;
++
++ if (chip->pst)
++ return 0;
++
++ chip->pst = kzalloc(mtd->size >>
++ (chip->page_shift + mtd->subpage_sft + 2),
++ GFP_KERNEL);
++ if (!chip->pst)
++ return -ENOMEM;
++
++ return 0;
++}
++EXPORT_SYMBOL(nand_pst_create);
++
++/**
+ * nand_read_page_raw - [INTERN] read raw page data without ecc
+ * @mtd: mtd info structure
+ * @chip: nand chip info structure
+@@ -2539,6 +2671,7 @@ static int nand_do_write_ops(struct mtd_info *mtd, loff_t to,
+ uint8_t *wbuf = buf;
+ int use_bufpoi;
+ int part_pagewr = (column || writelen < (mtd->writesize - 1));
++ int subpage;
+
+ if (part_pagewr)
+ use_bufpoi = 1;
+@@ -2574,6 +2707,14 @@ static int nand_do_write_ops(struct mtd_info *mtd, loff_t to,
+ if (ret)
+ break;
+
++ for (subpage = column / chip->subpagesize;
++ subpage < (column + writelen) / chip->subpagesize;
++ subpage++)
++ nand_page_set_status(mtd,
++ (page << mtd->subpage_sft) +
++ subpage,
++ NAND_PAGE_FILLED);
++
+ writelen -= bytes;
+ if (!writelen)
+ break;
+@@ -2979,6 +3120,7 @@ int nand_erase_nand(struct mtd_info *mtd, struct erase_info *instr,
+ int page, status, pages_per_block, ret, chipnr;
+ struct nand_chip *chip = mtd->priv;
+ loff_t len;
++ int i;
+
+ pr_debug("%s: start = 0x%012llx, len = %llu\n",
+ __func__, (unsigned long long)instr->addr,
+@@ -3051,6 +3193,18 @@ int nand_erase_nand(struct mtd_info *mtd, struct erase_info *instr,
+ goto erase_exit;
+ }
+
++ for (i = 0; i < pages_per_block; i++) {
++ int subpage;
++ for (subpage = 0;
++ subpage < 1 << mtd->subpage_sft;
++ subpage++) {
++ nand_page_set_status(mtd,
++ ((page + i) << mtd->subpage_sft) +
++ subpage,
++ NAND_PAGE_EMPTY);
++ }
++ }
++
+ /* Increment page address and decrement length */
+ len -= (1ULL << chip->phys_erase_shift);
+ page += pages_per_block;
+diff --git a/include/linux/mtd/nand.h b/include/linux/mtd/nand.h
+index 5616f51..4f7ca8d 100644
+--- a/include/linux/mtd/nand.h
++++ b/include/linux/mtd/nand.h
+@@ -521,6 +521,24 @@ struct nand_ecc_ctrl {
+ int page);
+ };
+
++/*
++ * Constants for page status
++ */
++enum nand_page_status {
++ NAND_PAGE_STATUS_UNKNOWN,
++ NAND_PAGE_EMPTY,
++ NAND_PAGE_FILLED,
++};
++
++bool nand_page_is_empty(struct mtd_info *mtd, void *data, void *oob);
++
++int nand_page_get_status(struct mtd_info *mtd, int page);
++
++void nand_page_set_status(struct mtd_info *mtd, int page,
++ enum nand_page_status status);
++
++int nand_pst_create(struct mtd_info *mtd);
++
+ /**
+ * struct nand_buffers - buffer structure for read/write
+ * @ecccalc: buffer pointer for calculated ECC, size is oobsize.
+@@ -630,6 +648,7 @@ struct nand_buffers {
+ * @bbt_md: [REPLACEABLE] bad block table mirror descriptor
+ * @badblock_pattern: [REPLACEABLE] bad block scan pattern used for initial
+ * bad block scan.
++ * @pst: [INTERN] page status table
+ * @controller: [REPLACEABLE] a pointer to a hardware controller
+ * structure which is shared among multiple independent
+ * devices.
+@@ -718,6 +737,8 @@ struct nand_chip {
+
+ struct nand_bbt_descr *badblock_pattern;
+
++ uint8_t *pst;
++
+ struct list_head partitions;
+ struct mutex part_lock;
+
--- /dev/null
+From 293984c7f167a08285596ef2166d8ab9cb571778 Mon Sep 17 00:00:00 2001
+From: Boris BREZILLON <boris.brezillon@free-electrons.com>
+Date: Mon, 28 Jul 2014 14:46:26 +0200
+Subject: [PATCH] mtd: nand: Introduce a randomizer layer in the NAND framework
+
+This patch introduce a new layer in the NAND framework to support both HW
+and SW randomizers.
+
+This randomization is required on some MLC/TLC NAND chips which do not
+support large islands of same patterns.
+
+The randomizer layer defines a nand_rnd_ctrl struct which is intended to
+be used by NAND core functions or NAND drivers to randomize/derandomize
+data stored on NAND chips.
+
+The implementation can implement any of these functions:
+- config: prepare a random transfer to/from the NAND chip
+- write_buf: randomize and write data to the NAND chip
+- read_buf: read and derandomize data from the NAND chip
+
+read/write_buf functions are always called after a config call.
+The config call specify the page, the column within the page and the action
+that will take place after the config (either read or write).
+If column is set to -1, the randomizer is disabled.
+If page is set to -1, we keep working on the same page.
+
+The randomizer layer provides helper functions that choose wether the
+randomizer or the chip read/write_buf should be used.
+
+Signed-off-by: Boris BREZILLON <boris.brezillon@free-electrons.com>
+Signed-off-by: Hans de Goede <hdegoede@redhat.com>
+---
+ drivers/mtd/nand/nand_base.c | 278 ++++++++++++++++++++++++++++++++++---------
+ include/linux/mtd/nand.h | 98 +++++++++++++++
+ 2 files changed, 321 insertions(+), 55 deletions(-)
+
+diff --git a/drivers/mtd/nand/nand_base.c b/drivers/mtd/nand/nand_base.c
+index 8a5d12e..577cb9e 100644
+--- a/drivers/mtd/nand/nand_base.c
++++ b/drivers/mtd/nand/nand_base.c
+@@ -1102,6 +1102,62 @@ int nand_lock(struct mtd_info *mtd, loff_t ofs, uint64_t len)
+ EXPORT_SYMBOL(nand_lock);
+
+ /**
++ * nand_rnd_is_activ - check wether a region of a NAND page requires NAND
++ * randomizer to be disabled
++ * @mtd: mtd info
++ * @page: NAND page
++ * @column: offset within the page
++ * @len: len of the region
++ *
++ * Returns 1 if the randomizer should be enabled, 0 if not, or -ERR in case of
++ * error.
++ *
++ * In case of success len will contain the size of the region:
++ * - if the requested region fits in a NAND random region len will not change
++ * - else len will be replaced by the available length within the NAND random
++ * region
++ */
++int nand_rnd_is_activ(struct mtd_info *mtd, int page, int column, int *len)
++{
++ struct nand_chip *chip = mtd->priv;
++ struct nand_rnd_layout *layout = chip->cur_rnd->layout;
++ struct nand_rndfree *range;
++ int ret = 1;
++ int tmp;
++ int i;
++
++ if (!len || *len < 0 || column < 0 ||
++ column + *len > mtd->writesize + mtd->oobsize)
++ return -EINVAL;
++
++ if (layout) {
++ for (i = 0; i < layout->nranges; i++) {
++ range = &layout->ranges[i];
++ if (column + *len <= range->offset) {
++ break;
++ } else if (column >= range->offset + range->length) {
++ continue;
++ } else if (column < range->offset) {
++ tmp = range->offset - column;
++ if (*len > tmp)
++ *len = tmp;
++ break;
++ } else {
++ tmp = range->offset + range->length - column;
++ if (*len > tmp)
++ *len = tmp;
++ ret = 0;
++ break;
++ }
++
++ }
++ }
++
++ return ret;
++}
++EXPORT_SYMBOL(nand_rnd_is_activ);
++
++/**
+ * nand_page_is_empty - check wether a NAND page contains only FFs
+ * @mtd: mtd info
+ * @data: data buffer
+@@ -1246,9 +1302,14 @@ EXPORT_SYMBOL(nand_pst_create);
+ static int nand_read_page_raw(struct mtd_info *mtd, struct nand_chip *chip,
+ uint8_t *buf, int oob_required, int page)
+ {
+- chip->read_buf(mtd, buf, mtd->writesize);
+- if (oob_required)
+- chip->read_buf(mtd, chip->oob_poi, mtd->oobsize);
++ nand_rnd_config(mtd, page, 0, NAND_RND_READ);
++ nand_rnd_read_buf(mtd, buf, mtd->writesize);
++ if (oob_required) {
++ nand_rnd_config(mtd, page, mtd->writesize, NAND_RND_READ);
++ nand_rnd_read_buf(mtd, chip->oob_poi, mtd->oobsize);
++ }
++ nand_rnd_config(mtd, -1, -1, NAND_RND_READ);
++
+ return 0;
+ }
+
+@@ -1270,28 +1331,40 @@ static int nand_read_page_raw_syndrome(struct mtd_info *mtd,
+ int eccbytes = chip->cur_ecc->bytes;
+ uint8_t *oob = chip->oob_poi;
+ int steps, size;
++ int column = 0;
+
+ for (steps = chip->cur_ecc->steps; steps > 0; steps--) {
+- chip->read_buf(mtd, buf, eccsize);
++ nand_rnd_config(mtd, page, column, NAND_RND_READ);
++ nand_rnd_read_buf(mtd, buf, eccsize);
+ buf += eccsize;
++ column += eccsize;
+
+ if (chip->cur_ecc->prepad) {
+- chip->read_buf(mtd, oob, chip->cur_ecc->prepad);
++ nand_rnd_config(mtd, page, column, NAND_RND_READ);
++ nand_rnd_read_buf(mtd, oob, chip->cur_ecc->prepad);
+ oob += chip->cur_ecc->prepad;
++ column += chip->cur_ecc->prepad;
+ }
+
+- chip->read_buf(mtd, oob, eccbytes);
++ nand_rnd_config(mtd, page, column, NAND_RND_READ);
++ nand_rnd_read_buf(mtd, oob, eccbytes);
+ oob += eccbytes;
++ column += eccbytes;
+
+ if (chip->cur_ecc->postpad) {
+- chip->read_buf(mtd, oob, chip->cur_ecc->postpad);
++ nand_rnd_config(mtd, page, column, NAND_RND_READ);
++ nand_rnd_read_buf(mtd, oob, chip->cur_ecc->postpad);
+ oob += chip->cur_ecc->postpad;
++ column += chip->cur_ecc->postpad;
+ }
+ }
+
+ size = mtd->oobsize - (oob - chip->oob_poi);
+- if (size)
+- chip->read_buf(mtd, oob, size);
++ if (size) {
++ nand_rnd_config(mtd, page, column, NAND_RND_READ);
++ nand_rnd_read_buf(mtd, oob, size);
++ }
++ nand_rnd_config(mtd, -1, -1, NAND_RND_READ);
+
+ return 0;
+ }
+@@ -1380,7 +1453,8 @@ static int nand_read_subpage(struct mtd_info *mtd, struct nand_chip *chip,
+ chip->cmdfunc(mtd, NAND_CMD_RNDOUT, data_col_addr, -1);
+
+ p = bufpoi + data_col_addr;
+- chip->read_buf(mtd, p, datafrag_len);
++ nand_rnd_config(mtd, -1, data_col_addr, NAND_RND_READ);
++ nand_rnd_read_buf(mtd, p, datafrag_len);
+
+ /* Calculate ECC */
+ for (i = 0; i < eccfrag_len;
+@@ -1399,7 +1473,8 @@ static int nand_read_subpage(struct mtd_info *mtd, struct nand_chip *chip,
+ }
+ if (gaps) {
+ chip->cmdfunc(mtd, NAND_CMD_RNDOUT, mtd->writesize, -1);
+- chip->read_buf(mtd, chip->oob_poi, mtd->oobsize);
++ nand_rnd_config(mtd, -1, mtd->writesize, NAND_RND_READ);
++ nand_rnd_read_buf(mtd, chip->oob_poi, mtd->oobsize);
+ } else {
+ /*
+ * Send the command to read the particular ECC bytes take care
+@@ -1415,7 +1490,8 @@ static int nand_read_subpage(struct mtd_info *mtd, struct nand_chip *chip,
+
+ chip->cmdfunc(mtd, NAND_CMD_RNDOUT,
+ mtd->writesize + aligned_pos, -1);
+- chip->read_buf(mtd, &chip->oob_poi[aligned_pos], aligned_len);
++ nand_rnd_config(mtd, -1, mtd->writesize + aligned_pos, NAND_RND_READ);
++ nand_rnd_read_buf(mtd, &chip->oob_poi[aligned_pos], aligned_len);
+ }
+
+ for (i = 0; i < eccfrag_len; i++)
+@@ -1436,6 +1512,7 @@ static int nand_read_subpage(struct mtd_info *mtd, struct nand_chip *chip,
+ max_bitflips = max_t(unsigned int, max_bitflips, stat);
+ }
+ }
++ nand_rnd_config(mtd, -1, -1, NAND_RND_READ);
+ return max_bitflips;
+ }
+
+@@ -1460,13 +1537,17 @@ static int nand_read_page_hwecc(struct mtd_info *mtd, struct nand_chip *chip,
+ uint8_t *ecc_code = chip->buffers->ecccode;
+ uint32_t *eccpos = chip->cur_ecc->layout->eccpos;
+ unsigned int max_bitflips = 0;
++ int column = 0;
+
+ for (i = 0; eccsteps; eccsteps--, i += eccbytes, p += eccsize) {
+ chip->cur_ecc->hwctl(mtd, NAND_ECC_READ);
+- chip->read_buf(mtd, p, eccsize);
++ nand_rnd_config(mtd, page, column, NAND_RND_READ);
++ nand_rnd_read_buf(mtd, p, eccsize);
+ chip->cur_ecc->calculate(mtd, p, &ecc_calc[i]);
++ column += eccsize;
+ }
+- chip->read_buf(mtd, chip->oob_poi, mtd->oobsize);
++ nand_rnd_config(mtd, page, column, NAND_RND_READ);
++ nand_rnd_read_buf(mtd, chip->oob_poi, mtd->oobsize);
+
+ for (i = 0; i < chip->cur_ecc->total; i++)
+ ecc_code[i] = chip->oob_poi[eccpos[i]];
+@@ -1486,6 +1567,7 @@ static int nand_read_page_hwecc(struct mtd_info *mtd, struct nand_chip *chip,
+ max_bitflips = max_t(unsigned int, max_bitflips, stat);
+ }
+ }
++ nand_rnd_config(mtd, -1, -1, NAND_RND_READ);
+ return max_bitflips;
+ }
+
+@@ -1514,11 +1596,14 @@ static int nand_read_page_hwecc_oob_first(struct mtd_info *mtd,
+ uint32_t *eccpos = chip->cur_ecc->layout->eccpos;
+ uint8_t *ecc_calc = chip->buffers->ecccalc;
+ unsigned int max_bitflips = 0;
++ int column = 0;
+
+ /* Read the OOB area first */
+ chip->cmdfunc(mtd, NAND_CMD_READOOB, 0, page);
+- chip->read_buf(mtd, chip->oob_poi, mtd->oobsize);
++ nand_rnd_config(mtd, page, mtd->writesize, NAND_RND_READ);
++ nand_rnd_read_buf(mtd, chip->oob_poi, mtd->oobsize);
+ chip->cmdfunc(mtd, NAND_CMD_READ0, 0, page);
++ column = 0;
+
+ for (i = 0; i < chip->cur_ecc->total; i++)
+ ecc_code[i] = chip->oob_poi[eccpos[i]];
+@@ -1527,7 +1612,8 @@ static int nand_read_page_hwecc_oob_first(struct mtd_info *mtd,
+ int stat;
+
+ chip->cur_ecc->hwctl(mtd, NAND_ECC_READ);
+- chip->read_buf(mtd, p, eccsize);
++ nand_rnd_config(mtd, page, column, NAND_RND_READ);
++ nand_rnd_read_buf(mtd, p, eccsize);
+ chip->cur_ecc->calculate(mtd, p, &ecc_calc[i]);
+
+ stat = chip->cur_ecc->correct(mtd, p, &ecc_code[i], NULL);
+@@ -1538,6 +1624,7 @@ static int nand_read_page_hwecc_oob_first(struct mtd_info *mtd,
+ max_bitflips = max_t(unsigned int, max_bitflips, stat);
+ }
+ }
++ nand_rnd_config(mtd, -1, -1, NAND_RND_READ);
+ return max_bitflips;
+ }
+
+@@ -1561,20 +1648,27 @@ static int nand_read_page_syndrome(struct mtd_info *mtd, struct nand_chip *chip,
+ uint8_t *p = buf;
+ uint8_t *oob = chip->oob_poi;
+ unsigned int max_bitflips = 0;
++ int column = 0;
+
+ for (i = 0; eccsteps; eccsteps--, i += eccbytes, p += eccsize) {
+ int stat;
+
+ chip->cur_ecc->hwctl(mtd, NAND_ECC_READ);
+- chip->read_buf(mtd, p, eccsize);
++ nand_rnd_config(mtd, page, column, NAND_RND_READ);
++ nand_rnd_read_buf(mtd, p, eccsize);
++ column += eccsize;
+
+ if (chip->cur_ecc->prepad) {
+- chip->read_buf(mtd, oob, chip->cur_ecc->prepad);
++ nand_rnd_config(mtd, page, column, NAND_RND_READ);
++ nand_rnd_read_buf(mtd, oob, chip->cur_ecc->prepad);
+ oob += chip->cur_ecc->prepad;
+ }
+
+ chip->cur_ecc->hwctl(mtd, NAND_ECC_READSYN);
+- chip->read_buf(mtd, oob, eccbytes);
++ nand_rnd_config(mtd, page, column, NAND_RND_READ);
++ nand_rnd_read_buf(mtd, oob, eccbytes);
++ column += eccbytes;
++
+ stat = chip->cur_ecc->correct(mtd, p, oob, NULL);
+
+ if (stat < 0) {
+@@ -1587,29 +1681,36 @@ static int nand_read_page_syndrome(struct mtd_info *mtd, struct nand_chip *chip,
+ oob += eccbytes;
+
+ if (chip->cur_ecc->postpad) {
+- chip->read_buf(mtd, oob, chip->cur_ecc->postpad);
++ nand_rnd_config(mtd, page, column, NAND_RND_READ);
++ nand_rnd_read_buf(mtd, oob, chip->cur_ecc->postpad);
++ column += chip->cur_ecc->postpad;
+ oob += chip->cur_ecc->postpad;
+ }
+ }
+
+ /* Calculate remaining oob bytes */
+ i = mtd->oobsize - (oob - chip->oob_poi);
+- if (i)
+- chip->read_buf(mtd, oob, i);
++ if (i) {
++ nand_rnd_config(mtd, page, column, NAND_RND_READ);
++ nand_rnd_read_buf(mtd, oob, i);
++ }
++ nand_rnd_config(mtd, -1, -1, NAND_RND_READ);
+
+ return max_bitflips;
+ }
+
+ /**
+ * nand_transfer_oob - [INTERN] Transfer oob to client buffer
+- * @chip: nand chip structure
++ * @mtd: mtd structure
+ * @oob: oob destination address
+ * @ops: oob ops structure
+ * @len: size of oob to transfer
+ */
+-static uint8_t *nand_transfer_oob(struct nand_chip *chip, uint8_t *oob,
++static uint8_t *nand_transfer_oob(struct mtd_info *mtd, uint8_t *oob,
+ struct mtd_oob_ops *ops, size_t len)
+ {
++ struct nand_chip *chip = mtd->priv;
++
+ switch (ops->mode) {
+
+ case MTD_OPS_PLACE_OOB:
+@@ -1737,6 +1838,7 @@ static int nand_do_read_ops(struct mtd_info *mtd, loff_t from,
+ * Now read the page into the buffer. Absent an error,
+ * the read methods return max bitflips per ecc step.
+ */
++ nand_rnd_config(mtd, page, -1, NAND_RND_READ);
+ if (unlikely(ops->mode == MTD_OPS_RAW))
+ ret = chip->cur_ecc->read_page_raw(mtd, chip,
+ bufpoi,
+@@ -1753,6 +1855,8 @@ static int nand_do_read_ops(struct mtd_info *mtd, loff_t from,
+ bufpoi,
+ oob_required,
+ page);
++ nand_rnd_config(mtd, -1, -1, NAND_RND_READ);
++
+ if (ret < 0) {
+ if (use_bufpoi)
+ /* Invalidate page cache */
+@@ -1780,8 +1884,8 @@ static int nand_do_read_ops(struct mtd_info *mtd, loff_t from,
+ int toread = min(oobreadlen, max_oobsize);
+
+ if (toread) {
+- oob = nand_transfer_oob(chip,
+- oob, ops, toread);
++ oob = nand_transfer_oob(mtd, oob, ops,
++ toread);
+ oobreadlen -= toread;
+ }
+ }
+@@ -1909,12 +2013,15 @@ static int nand_part_read(struct mtd_info *mtd, loff_t from, size_t len,
+ nand_get_device(part->master, FL_READING);
+ if (part->ecc)
+ chip->cur_ecc = part->ecc;
++ if (part->rnd)
++ chip->cur_rnd = part->rnd;
+ ops.len = len;
+ ops.datbuf = buf;
+ ops.oobbuf = NULL;
+ ops.mode = MTD_OPS_PLACE_OOB;
+ ret = nand_do_read_ops(part->master, from, &ops);
+ *retlen = ops.retlen;
++ chip->cur_rnd = &chip->rnd;
+ chip->cur_ecc = &chip->ecc;
+ nand_release_device(part->master);
+ return ret;
+@@ -1930,7 +2037,9 @@ static int nand_read_oob_std(struct mtd_info *mtd, struct nand_chip *chip,
+ int page)
+ {
+ chip->cmdfunc(mtd, NAND_CMD_READOOB, 0, page);
+- chip->read_buf(mtd, chip->oob_poi, mtd->oobsize);
++ nand_rnd_config(mtd, page, mtd->writesize, NAND_RND_READ);
++ nand_rnd_read_buf(mtd, chip->oob_poi, mtd->oobsize);
++ nand_rnd_config(mtd, -1, -1, NAND_RND_READ);
+ return 0;
+ }
+
+@@ -1949,7 +2058,7 @@ static int nand_read_oob_syndrome(struct mtd_info *mtd, struct nand_chip *chip,
+ chip->cur_ecc->postpad;
+ int eccsize = chip->cur_ecc->size;
+ uint8_t *bufpoi = chip->oob_poi;
+- int i, toread, sndrnd = 0, pos;
++ int i, toread, sndrnd = 0, pos = eccsize;
+
+ chip->cmdfunc(mtd, NAND_CMD_READ0, chip->cur_ecc->size, page);
+ for (i = 0; i < chip->cur_ecc->steps; i++) {
+@@ -1962,12 +2071,17 @@ static int nand_read_oob_syndrome(struct mtd_info *mtd, struct nand_chip *chip,
+ } else
+ sndrnd = 1;
+ toread = min_t(int, length, chunk);
+- chip->read_buf(mtd, bufpoi, toread);
++ nand_rnd_config(mtd, page, pos, NAND_RND_READ);
++ nand_rnd_read_buf(mtd, bufpoi, toread);
+ bufpoi += toread;
+ length -= toread;
+ }
+- if (length > 0)
+- chip->read_buf(mtd, bufpoi, length);
++ if (length > 0) {
++ pos = mtd->writesize + mtd->oobsize - length;
++ nand_rnd_config(mtd, page, pos, NAND_RND_READ);
++ nand_rnd_read_buf(mtd, bufpoi, length);
++ }
++ nand_rnd_config(mtd, -1, -1, NAND_RND_READ);
+
+ return 0;
+ }
+@@ -1986,7 +2100,9 @@ static int nand_write_oob_std(struct mtd_info *mtd, struct nand_chip *chip,
+ int length = mtd->oobsize;
+
+ chip->cmdfunc(mtd, NAND_CMD_SEQIN, mtd->writesize, page);
+- chip->write_buf(mtd, buf, length);
++ nand_rnd_config(mtd, page, mtd->writesize, NAND_RND_WRITE);
++ nand_rnd_write_buf(mtd, buf, length);
++ nand_rnd_config(mtd, -1, -1, NAND_RND_WRITE);
+ /* Send command to program the OOB data */
+ chip->cmdfunc(mtd, NAND_CMD_PAGEPROG, -1, -1);
+
+@@ -2042,12 +2158,18 @@ static int nand_write_oob_syndrome(struct mtd_info *mtd,
+ } else
+ sndcmd = 1;
+ len = min_t(int, length, chunk);
+- chip->write_buf(mtd, bufpoi, len);
++ nand_rnd_config(mtd, page, pos, NAND_RND_WRITE);
++ nand_rnd_write_buf(mtd, bufpoi, len);
+ bufpoi += len;
+ length -= len;
+ }
+- if (length > 0)
+- chip->write_buf(mtd, bufpoi, length);
++ if (length > 0) {
++ pos = mtd->writesize + mtd->oobsize - length;
++ nand_rnd_config(mtd, page, pos, NAND_RND_WRITE);
++ nand_rnd_write_buf(mtd, bufpoi, length);
++ }
++
++ nand_rnd_config(mtd, -1, -1, NAND_RND_WRITE);
+
+ chip->cmdfunc(mtd, NAND_CMD_PAGEPROG, -1, -1);
+ status = chip->waitfunc(mtd, chip);
+@@ -2116,7 +2238,7 @@ static int nand_do_read_oob(struct mtd_info *mtd, loff_t from,
+ break;
+
+ len = min(len, readlen);
+- buf = nand_transfer_oob(chip, buf, ops, len);
++ buf = nand_transfer_oob(mtd, buf, ops, len);
+
+ if (chip->options & NAND_NEED_READRDY) {
+ /* Apply delay or wait for ready/busy pin */
+@@ -2226,6 +2348,8 @@ static int nand_part_read_oob(struct mtd_info *mtd, loff_t from,
+ nand_get_device(part->master, FL_READING);
+ if (part->ecc)
+ chip->cur_ecc = part->ecc;
++ if (part->rnd)
++ chip->cur_rnd = part->rnd;
+
+ switch (ops->mode) {
+ case MTD_OPS_PLACE_OOB:
+@@ -2243,6 +2367,7 @@ static int nand_part_read_oob(struct mtd_info *mtd, loff_t from,
+ ret = nand_do_read_ops(part->master, from, ops);
+
+ out:
++ chip->cur_rnd = &chip->rnd;
+ chip->cur_ecc = &chip->ecc;
+ nand_release_device(part->master);
+ return ret;
+@@ -2261,9 +2386,11 @@ static int nand_part_read_oob(struct mtd_info *mtd, loff_t from,
+ static int nand_write_page_raw(struct mtd_info *mtd, struct nand_chip *chip,
+ const uint8_t *buf, int oob_required)
+ {
+- chip->write_buf(mtd, buf, mtd->writesize);
+- if (oob_required)
+- chip->write_buf(mtd, chip->oob_poi, mtd->oobsize);
++ nand_rnd_write_buf(mtd, buf, mtd->writesize);
++ if (oob_required) {
++ nand_rnd_config(mtd, -1, mtd->writesize, NAND_RND_WRITE);
++ nand_rnd_write_buf(mtd, chip->oob_poi, mtd->oobsize);
++ }
+
+ return 0;
+ }
+@@ -2285,28 +2412,39 @@ static int nand_write_page_raw_syndrome(struct mtd_info *mtd,
+ int eccbytes = chip->cur_ecc->bytes;
+ uint8_t *oob = chip->oob_poi;
+ int steps, size;
++ int column = 0;
+
+ for (steps = chip->cur_ecc->steps; steps > 0; steps--) {
+- chip->write_buf(mtd, buf, eccsize);
++ nand_rnd_config(mtd, -1, column, NAND_RND_WRITE);
++ nand_rnd_write_buf(mtd, buf, eccsize);
+ buf += eccsize;
++ column += eccsize;
+
+ if (chip->cur_ecc->prepad) {
+- chip->write_buf(mtd, oob, chip->cur_ecc->prepad);
++ nand_rnd_config(mtd, -1, column, NAND_RND_WRITE);
++ nand_rnd_write_buf(mtd, oob, chip->cur_ecc->prepad);
+ oob += chip->cur_ecc->prepad;
++ column += chip->cur_ecc->prepad;
+ }
+
+- chip->write_buf(mtd, oob, eccbytes);
++ nand_rnd_config(mtd, -1, column, NAND_RND_WRITE);
++ nand_rnd_write_buf(mtd, oob, eccbytes);
+ oob += eccbytes;
++ column += eccbytes;
+
+ if (chip->cur_ecc->postpad) {
+- chip->write_buf(mtd, oob, chip->cur_ecc->postpad);
++ nand_rnd_config(mtd, -1, column, NAND_RND_WRITE);
++ nand_rnd_write_buf(mtd, oob, chip->cur_ecc->postpad);
+ oob += chip->cur_ecc->postpad;
++ column += chip->cur_ecc->postpad;
+ }
+ }
+
+ size = mtd->oobsize - (oob - chip->oob_poi);
+- if (size)
+- chip->write_buf(mtd, oob, size);
++ if (size) {
++ nand_rnd_config(mtd, -1, column, NAND_RND_WRITE);
++ nand_rnd_write_buf(mtd, oob, size);
++ }
+
+ return 0;
+ }
+@@ -2353,17 +2491,21 @@ static int nand_write_page_hwecc(struct mtd_info *mtd, struct nand_chip *chip,
+ uint8_t *ecc_calc = chip->buffers->ecccalc;
+ const uint8_t *p = buf;
+ uint32_t *eccpos = chip->cur_ecc->layout->eccpos;
++ int column = 0;
+
+ for (i = 0; eccsteps; eccsteps--, i += eccbytes, p += eccsize) {
+ chip->cur_ecc->hwctl(mtd, NAND_ECC_WRITE);
+- chip->write_buf(mtd, p, eccsize);
++ nand_rnd_config(mtd, -1, column, NAND_RND_WRITE);
++ nand_rnd_write_buf(mtd, p, eccsize);
+ chip->cur_ecc->calculate(mtd, p, &ecc_calc[i]);
++ column += eccsize;
+ }
+
+ for (i = 0; i < chip->cur_ecc->total; i++)
+ chip->oob_poi[eccpos[i]] = ecc_calc[i];
+
+- chip->write_buf(mtd, chip->oob_poi, mtd->oobsize);
++ nand_rnd_config(mtd, -1, column, NAND_RND_WRITE);
++ nand_rnd_write_buf(mtd, chip->oob_poi, mtd->oobsize);
+
+ return 0;
+ }
+@@ -2399,7 +2541,9 @@ static int nand_write_subpage_hwecc(struct mtd_info *mtd,
+ chip->cur_ecc->hwctl(mtd, NAND_ECC_WRITE);
+
+ /* write data (untouched subpages already masked by 0xFF) */
+- chip->write_buf(mtd, buf, ecc_size);
++ nand_rnd_config(mtd, -1, offset, NAND_RND_WRITE);
++ nand_rnd_write_buf(mtd, buf, ecc_size);
++ offset += ecc_size;
+
+ /* mask ECC of un-touched subpages by padding 0xFF */
+ if ((step < start_step) || (step > end_step))
+@@ -2424,7 +2568,8 @@ static int nand_write_subpage_hwecc(struct mtd_info *mtd,
+ chip->oob_poi[eccpos[i]] = ecc_calc[i];
+
+ /* write OOB buffer to NAND device */
+- chip->write_buf(mtd, chip->oob_poi, mtd->oobsize);
++ nand_rnd_config(mtd, -1, offset, NAND_RND_WRITE);
++ nand_rnd_write_buf(mtd, chip->oob_poi, mtd->oobsize);
+
+ return 0;
+ }
+@@ -2449,31 +2594,42 @@ static int nand_write_page_syndrome(struct mtd_info *mtd,
+ int eccsteps = chip->cur_ecc->steps;
+ const uint8_t *p = buf;
+ uint8_t *oob = chip->oob_poi;
++ int column = 0;
+
+ for (i = 0; eccsteps; eccsteps--, i += eccbytes, p += eccsize) {
+
+ chip->cur_ecc->hwctl(mtd, NAND_ECC_WRITE);
+- chip->write_buf(mtd, p, eccsize);
++ nand_rnd_config(mtd, -1, column, NAND_RND_WRITE);
++ nand_rnd_write_buf(mtd, p, eccsize);
++ column += eccsize;
+
+ if (chip->cur_ecc->prepad) {
+- chip->write_buf(mtd, oob, chip->cur_ecc->prepad);
++ nand_rnd_config(mtd, -1, column, NAND_RND_WRITE);
++ nand_rnd_write_buf(mtd, oob, chip->cur_ecc->prepad);
+ oob += chip->cur_ecc->prepad;
++ column += chip->cur_ecc->prepad;
+ }
+
+ chip->cur_ecc->calculate(mtd, p, oob);
+- chip->write_buf(mtd, oob, eccbytes);
++ nand_rnd_config(mtd, -1, column, NAND_RND_WRITE);
++ nand_rnd_write_buf(mtd, oob, eccbytes);
+ oob += eccbytes;
++ column += eccbytes;
+
+ if (chip->cur_ecc->postpad) {
+- chip->write_buf(mtd, oob, chip->cur_ecc->postpad);
++ nand_rnd_config(mtd, -1, column, NAND_RND_WRITE);
++ nand_rnd_write_buf(mtd, oob, chip->cur_ecc->postpad);
+ oob += chip->cur_ecc->postpad;
++ column += chip->cur_ecc->postpad;
+ }
+ }
+
+ /* Calculate remaining oob bytes */
+ i = mtd->oobsize - (oob - chip->oob_poi);
+- if (i)
+- chip->write_buf(mtd, oob, i);
++ if (i) {
++ nand_rnd_config(mtd, -1, column, NAND_RND_WRITE);
++ nand_rnd_write_buf(mtd, oob, i);
++ }
+
+ return 0;
+ }
+@@ -2504,6 +2660,7 @@ static int nand_write_page(struct mtd_info *mtd, struct nand_chip *chip,
+
+ chip->cmdfunc(mtd, NAND_CMD_SEQIN, 0x00, page);
+
++ nand_rnd_config(mtd, page, 0, NAND_RND_WRITE);
+ if (unlikely(raw))
+ status = chip->cur_ecc->write_page_raw(mtd, chip, buf,
+ oob_required);
+@@ -2514,6 +2671,7 @@ static int nand_write_page(struct mtd_info *mtd, struct nand_chip *chip,
+ else
+ status = chip->cur_ecc->write_page(mtd, chip, buf,
+ oob_required);
++ nand_rnd_config(mtd, -1, -1, NAND_RND_WRITE);
+
+ if (status < 0)
+ return status;
+@@ -2803,6 +2961,8 @@ static int panic_nand_part_write(struct mtd_info *mtd, loff_t to, size_t len,
+ panic_nand_get_device(chip, part->master, FL_WRITING);
+ if (part->ecc)
+ chip->cur_ecc = part->ecc;
++ if (part->rnd)
++ chip->cur_rnd = part->rnd;
+
+ ops.len = len;
+ ops.datbuf = (uint8_t *)buf;
+@@ -2811,6 +2971,7 @@ static int panic_nand_part_write(struct mtd_info *mtd, loff_t to, size_t len,
+
+ ret = nand_do_write_ops(part->master, to, &ops);
+
++ chip->cur_rnd = &chip->rnd;
+ chip->cur_ecc = &chip->ecc;
+ *retlen = ops.retlen;
+ return ret;
+@@ -2865,12 +3026,15 @@ static int nand_part_write(struct mtd_info *mtd, loff_t to, size_t len,
+ nand_get_device(part->master, FL_WRITING);
+ if (part->ecc)
+ chip->cur_ecc = part->ecc;
++ if (part->rnd)
++ chip->cur_rnd = part->rnd;
+ ops.len = len;
+ ops.datbuf = (uint8_t *)buf;
+ ops.oobbuf = NULL;
+ ops.mode = MTD_OPS_PLACE_OOB;
+ ret = nand_do_write_ops(part->master, to, &ops);
+ *retlen = ops.retlen;
++ chip->cur_rnd = &chip->rnd;
+ chip->cur_ecc = &chip->ecc;
+ nand_release_device(part->master);
+ return ret;
+@@ -3032,6 +3196,8 @@ static int nand_part_write_oob(struct mtd_info *mtd, loff_t to,
+ nand_get_device(part->master, FL_WRITING);
+ if (part->ecc)
+ chip->cur_ecc = part->ecc;
++ if (part->rnd)
++ chip->cur_rnd = part->rnd;
+
+ switch (ops->mode) {
+ case MTD_OPS_PLACE_OOB:
+@@ -3049,6 +3215,7 @@ static int nand_part_write_oob(struct mtd_info *mtd, loff_t to,
+ ret = nand_do_write_ops(part->master, to, ops);
+
+ out:
++ chip->cur_rnd = &chip->rnd;
+ chip->cur_ecc = &chip->ecc;
+ nand_release_device(part->master);
+ return ret;
+@@ -4749,6 +4916,7 @@ int nand_scan_tail(struct mtd_info *mtd)
+ mutex_init(&chip->part_lock);
+
+ chip->cur_ecc = &chip->ecc;
++ chip->cur_rnd = &chip->rnd;
+
+ /* Allow subpage writes up to ecc.steps. Not possible for MLC flash */
+ if (!(chip->options & NAND_NO_SUBPAGE_WRITE) && nand_is_slc(chip)) {
+diff --git a/include/linux/mtd/nand.h b/include/linux/mtd/nand.h
+index 4f7ca8d..6cbd06a3 100644
+--- a/include/linux/mtd/nand.h
++++ b/include/linux/mtd/nand.h
+@@ -539,6 +539,64 @@ void nand_page_set_status(struct mtd_info *mtd, int page,
+
+ int nand_pst_create(struct mtd_info *mtd);
+
++/*
++ * Constants for randomizer modes
++ */
++typedef enum {
++ NAND_RND_NONE,
++ NAND_RND_SOFT,
++ NAND_RND_HW,
++} nand_rnd_modes_t;
++
++/*
++ * Constants for randomizer actions
++ */
++enum nand_rnd_action {
++ NAND_RND_NO_ACTION,
++ NAND_RND_READ,
++ NAND_RND_WRITE,
++};
++
++/**
++ * struct nand_rndfree - Structure defining a NAND page region where the
++ * randomizer should be disabled
++ * @offset: range offset
++ * @length: range length
++ */
++struct nand_rndfree {
++ u32 offset;
++ u32 length;
++};
++
++/**
++ * struct nand_rnd_layout - Structure defining rndfree regions
++ * @nranges: number of ranges
++ * @ranges: array defining the rndfree regions
++ */
++struct nand_rnd_layout {
++ int nranges;
++ struct nand_rndfree ranges[0];
++};
++
++/**
++ * struct nand_rnd_ctrl - Randomizer Control structure
++ * @mode: Randomizer mode
++ * @config: function to prepare the randomizer (i.e.: set the appropriate
++ * seed/init value).
++ * @read_buf: function that read from the NAND and descramble the retrieved
++ * data.
++ * @write_buf: function that scramble data before writing it to the NAND.
++ */
++struct nand_rnd_ctrl {
++ nand_rnd_modes_t mode;
++ struct nand_rnd_layout *layout;
++ void *priv;
++ int (*config)(struct mtd_info *mtd, int page, int column,
++ enum nand_rnd_action action);
++ void (*write_buf)(struct mtd_info *mtd, const uint8_t *buf, int len);
++ void (*read_buf)(struct mtd_info *mtd, uint8_t *buf, int len);
++};
++
+ /**
+ * struct nand_buffers - buffer structure for read/write
+ * @ecccalc: buffer pointer for calculated ECC, size is oobsize.
+@@ -731,6 +789,9 @@ struct nand_chip {
+ struct nand_buffers *buffers;
+ struct nand_hw_control hwcontrol;
+
++ struct nand_rnd_ctrl rnd;
++ struct nand_rnd_ctrl *cur_rnd;
++
+ uint8_t *bbt;
+ struct nand_bbt_descr *bbt_td;
+ struct nand_bbt_descr *bbt_md;
+@@ -752,6 +813,7 @@ struct nand_chip {
+ * @master: MTD device representing the NAND chip
+ * @offset: partition offset
+ * @ecc: partition specific ECC struct
++ * @rnd: partition specific randomizer struct
+ * @release: function used to release this nand_part struct
+ *
+ * NAND partitions work as standard MTD partitions except it can override
+@@ -765,6 +827,7 @@ struct nand_part {
+ struct mtd_info *master;
+ uint64_t offset;
+ struct nand_ecc_ctrl *ecc;
++ struct nand_rnd_ctrl *rnd;
+ void (*release)(struct nand_part *part);
+ };
+
+@@ -902,6 +965,41 @@ extern int nand_erase_nand(struct mtd_info *mtd, struct erase_info *instr,
+ extern int nand_do_read(struct mtd_info *mtd, loff_t from, size_t len,
+ size_t *retlen, uint8_t *buf);
+
++static inline int nand_rnd_config(struct mtd_info *mtd, int page, int column,
++ enum nand_rnd_action action)
++{
++ struct nand_chip *chip = mtd->priv;
++
++ if (chip->cur_rnd && chip->cur_rnd->config)
++ return chip->cur_rnd->config(mtd, page, column, action);
++
++ return 0;
++}
++
++static inline void nand_rnd_write_buf(struct mtd_info *mtd, const uint8_t *buf,
++ int len)
++{
++ struct nand_chip *chip = mtd->priv;
++
++ if (chip->cur_rnd && chip->cur_rnd->read_buf)
++ chip->cur_rnd->write_buf(mtd, buf, len);
++ else
++ chip->write_buf(mtd, buf, len);
++}
++
++static inline void nand_rnd_read_buf(struct mtd_info *mtd, uint8_t *buf,
++ int len)
++{
++ struct nand_chip *chip = mtd->priv;
++
++ if (chip->cur_rnd && chip->cur_rnd->read_buf)
++ chip->cur_rnd->read_buf(mtd, buf, len);
++ else
++ chip->read_buf(mtd, buf, len);
++}
++
++int nand_rnd_is_activ(struct mtd_info *mtd, int page, int column, int *len);
++
+ /**
+ * struct platform_nand_chip - chip level device structure
+ * @nr_chips: max. number of chips to scan for
--- /dev/null
+From eb7f9115409710732ebc4dfe1be629252280910e Mon Sep 17 00:00:00 2001
+From: Boris BREZILLON <boris.brezillon@free-electrons.com>
+Date: Mon, 28 Jul 2014 14:47:04 +0200
+Subject: [PATCH] of: mtd: Add NAND randomizer mode retrieval
+
+Add a of_get_nand_rnd_mode() helper function.
+
+Signed-off-by: Boris BREZILLON <boris.brezillon@free-electrons.com>
+Signed-off-by: Hans de Goede <hdegoede@redhat.com>
+---
+ drivers/of/of_mtd.c | 35 +++++++++++++++++++++++++++++++++++
+ include/linux/of_mtd.h | 6 ++++++
+ 2 files changed, 41 insertions(+)
+
+diff --git a/drivers/of/of_mtd.c b/drivers/of/of_mtd.c
+index b7361ed..4e42c26 100644
+--- a/drivers/of/of_mtd.c
++++ b/drivers/of/of_mtd.c
+@@ -84,6 +84,41 @@ int of_get_nand_ecc_strength(struct device_node *np)
+ EXPORT_SYMBOL_GPL(of_get_nand_ecc_strength);
+
+ /**
++ * It maps 'enum nand_rnd_modes_t' found in include/linux/mtd/nand.h
++ * into the device tree binding of 'nand-rnd', so that MTD
++ * device driver can get nand rnd from device tree.
++ */
++static const char *nand_rnd_modes[] = {
++ [NAND_RND_NONE] = "none",
++ [NAND_RND_SOFT] = "soft",
++ [NAND_RND_HW] = "hw",
++};
++
++/**
++ * of_get_nand_rnd_mode - Get nand randomizer mode for given device_node
++ * @np: Pointer to the given device_node
++ *
++ * The function gets randomizer mode string from property 'nand-rnd-mode',
++ * and return its index in nand_rnd_modes table, or errno in error case.
++ */
++int of_get_nand_rnd_mode(struct device_node *np)
++{
++ const char *pm;
++ int err, i;
++
++ err = of_property_read_string(np, "nand-rnd-mode", &pm);
++ if (err < 0)
++ return err;
++
++ for (i = 0; i < ARRAY_SIZE(nand_rnd_modes); i++)
++ if (!strcasecmp(pm, nand_rnd_modes[i]))
++ return i;
++
++ return -ENODEV;
++}
++EXPORT_SYMBOL_GPL(of_get_nand_rnd_mode);
++
++/**
+ * of_get_nand_bus_width - Get nand bus witdh for given device_node
+ * @np: Pointer to the given device_node
+ *
+diff --git a/include/linux/of_mtd.h b/include/linux/of_mtd.h
+index e266caa..1059472 100644
+--- a/include/linux/of_mtd.h
++++ b/include/linux/of_mtd.h
+@@ -15,6 +15,7 @@
+ int of_get_nand_ecc_mode(struct device_node *np);
+ int of_get_nand_ecc_step_size(struct device_node *np);
+ int of_get_nand_ecc_strength(struct device_node *np);
++int of_get_nand_rnd_mode(struct device_node *np);
+ int of_get_nand_bus_width(struct device_node *np);
+ bool of_get_nand_on_flash_bbt(struct device_node *np);
+
+@@ -35,6 +36,11 @@ static inline int of_get_nand_ecc_strength(struct device_node *np)
+ return -ENOSYS;
+ }
+
++static inline int of_get_nand_rnd_mode(struct device_node *np)
++{
++ return -ENOSYS;
++}
++
+ static inline int of_get_nand_bus_width(struct device_node *np)
+ {
+ return -ENOSYS;
--- /dev/null
+From 95430662a26332474f4a03a7f8f44fd8d80890b3 Mon Sep 17 00:00:00 2001
+From: Boris BREZILLON <b.brezillon.dev@gmail.com>
+Date: Mon, 24 Feb 2014 16:28:32 +0100
+Subject: [PATCH] mtd: nand: Add manufacturer specific init code infrastructure
+
+Add new fields in nand_manufacturers and nand_chip struct to provide
+manufacturer specific handling like read retries.
+
+Signed-off-by: Boris BREZILLON <b.brezillon.dev@gmail.com>
+Signed-off-by: Hans de Goede <hdegoede@redhat.com>
+---
+ drivers/mtd/nand/nand_base.c | 7 +++++++
+ include/linux/mtd/nand.h | 4 ++++
+ 2 files changed, 11 insertions(+)
+
+diff --git a/drivers/mtd/nand/nand_base.c b/drivers/mtd/nand/nand_base.c
+index 577cb9e..51642c6 100644
+--- a/drivers/mtd/nand/nand_base.c
++++ b/drivers/mtd/nand/nand_base.c
+@@ -4382,6 +4382,13 @@ static struct nand_flash_dev *nand_get_flash_type(struct mtd_info *mtd,
+ if (mtd->writesize > 512 && chip->cmdfunc == nand_command)
+ chip->cmdfunc = nand_command_lp;
+
++ if (nand_manuf_ids[maf_idx].init) {
++ int err;
++ err = nand_manuf_ids[maf_idx].init(mtd, id_data);
++ if (err)
++ return ERR_PTR(err);
++ }
++
+ pr_info("device found, Manufacturer ID: 0x%02x, Chip ID: 0x%02x\n",
+ *maf_id, *dev_id);
+
+diff --git a/include/linux/mtd/nand.h b/include/linux/mtd/nand.h
+index 6cbd06a3..5844d6f 100644
+--- a/include/linux/mtd/nand.h
++++ b/include/linux/mtd/nand.h
+@@ -748,6 +748,9 @@ struct nand_chip {
+ int (*onfi_get_features)(struct mtd_info *mtd, struct nand_chip *chip,
+ int feature_addr, uint8_t *subfeature_para);
+ int (*setup_read_retry)(struct mtd_info *mtd, int retry_mode);
++ void (*manuf_cleanup)(struct mtd_info *mtd);
++
++ void *manuf_priv;
+
+ int chip_delay;
+ unsigned int options;
+@@ -950,6 +953,7 @@ struct nand_flash_dev {
+ struct nand_manufacturers {
+ int id;
+ char *name;
++ int (*init)(struct mtd_info *mtd, const uint8_t *id);
+ };
+
+ extern struct nand_flash_dev nand_flash_ids[];
--- /dev/null
+From 5c5e3963a1b58be1669da5da93f51dc339cd73d7 Mon Sep 17 00:00:00 2001
+From: Boris BREZILLON <b.brezillon.dev@gmail.com>
+Date: Mon, 24 Feb 2014 16:30:22 +0100
+Subject: [PATCH] mtd: nand: Add hynix specific initializer
+
+Add an hynix initiliazer to manage read retries on h27uxgt8t2a chip.
+
+Signed-off-by: Boris BREZILLON <b.brezillon.dev@gmail.com>
+Signed-off-by: Hans de Goede <hdegoede@redhat.com>
+---
+ drivers/mtd/nand/Makefile | 2 +-
+ drivers/mtd/nand/nand_hynix.c | 159 ++++++++++++++++++++++++++++++++++++++++++
+ drivers/mtd/nand/nand_ids.c | 3 +-
+ include/linux/mtd/nand.h | 2 +
+ 4 files changed, 164 insertions(+), 2 deletions(-)
+ create mode 100644 drivers/mtd/nand/nand_hynix.c
+
+diff --git a/drivers/mtd/nand/Makefile b/drivers/mtd/nand/Makefile
+index fcbe032..07b7c8c 100644
+--- a/drivers/mtd/nand/Makefile
++++ b/drivers/mtd/nand/Makefile
+@@ -5,7 +5,7 @@
+ obj-$(CONFIG_MTD_NAND) += nand.o
+ obj-$(CONFIG_MTD_NAND_ECC) += nand_ecc.o
+ obj-$(CONFIG_MTD_NAND_BCH) += nand_bch.o
+-obj-$(CONFIG_MTD_NAND_IDS) += nand_ids.o
++obj-$(CONFIG_MTD_NAND_IDS) += nand_ids.o nand_hynix.o
+ obj-$(CONFIG_MTD_SM_COMMON) += sm_common.o
+
+ obj-$(CONFIG_MTD_NAND_CAFE) += cafe_nand.o
+diff --git a/drivers/mtd/nand/nand_hynix.c b/drivers/mtd/nand/nand_hynix.c
+new file mode 100644
+index 0000000..0d051bf5
+--- /dev/null
++++ b/drivers/mtd/nand/nand_hynix.c
+@@ -0,0 +1,159 @@
++/*
++ * Copyright (C) 2014 Boris BREZILLON <b.brezillon.dev@gmail.com>
++ *
++ * This program is free software; you can redistribute it and/or modify
++ * it under the terms of the GNU General Public License as published by
++ * the Free Software Foundation; either version 2 of the License, or
++ * (at your option) any later version.
++ *
++ * This program is distributed in the hope that it will be useful,
++ * but WITHOUT ANY WARRANTY; without even the implied warranty of
++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
++ * GNU General Public License for more details.
++ */
++
++#include <linux/module.h>
++#include <linux/mtd/nand.h>
++#include <linux/slab.h>
++
++static u8 h27ucg8t2a_read_retry_regs[] = {
++ 0xcc, 0xbf, 0xaa, 0xab, 0xcd, 0xad, 0xae, 0xaf
++};
++
++struct hynix_read_retry {
++ u8 *regs;
++ u8 values[64];
++};
++
++struct hynix_nand {
++ struct hynix_read_retry read_retry;
++};
++
++int nand_setup_read_retry_hynix(struct mtd_info *mtd, int retry_mode)
++{
++ struct nand_chip *chip = mtd->priv;
++ struct hynix_nand *hynix = chip->manuf_priv;
++ int offset = retry_mode * 8;
++ int status;
++ int i;
++
++ chip->cmdfunc(mtd, 0x36, -1, -1);
++ for (i = 0; i < 8; i++) {
++ int column = hynix->read_retry.regs[i];
++ column |= column << 8;
++ chip->cmdfunc(mtd, NAND_CMD_NONE, column, -1);
++ chip->write_byte(mtd, hynix->read_retry.values[offset + i]);
++ }
++ chip->cmdfunc(mtd, 0x16, -1, -1);
++
++ status = chip->waitfunc(mtd, chip);
++ if (status & NAND_STATUS_FAIL)
++ return -EIO;
++
++ return 0;
++}
++
++static void h27ucg8t2a_cleanup(struct mtd_info *mtd)
++{
++ struct nand_chip *chip = mtd->priv;
++ kfree(chip->manuf_priv);
++}
++
++static int h27ucg8t2a_init(struct mtd_info *mtd, const uint8_t *id)
++{
++ struct nand_chip *chip = mtd->priv;
++ struct hynix_nand *hynix;
++ u8 * buf = NULL;
++ int i, j;
++ int ret;
++
++ buf = kzalloc(1024, GFP_KERNEL);
++ if (!buf)
++ return -ENOMEM;
++
++ chip->select_chip(mtd, 0);
++ chip->cmdfunc(mtd, NAND_CMD_RESET, -1, -1);
++ chip->cmdfunc(mtd, 0x36, 0xff, -1);
++ chip->write_byte(mtd, 0x40);
++ chip->cmdfunc(mtd, NAND_CMD_NONE, 0xcc, -1);
++ chip->write_byte(mtd, 0x4d);
++ chip->cmdfunc(mtd, 0x16, -1, -1);
++ chip->cmdfunc(mtd, 0x17, -1, -1);
++ chip->cmdfunc(mtd, 0x04, -1, -1);
++ chip->cmdfunc(mtd, 0x19, -1, -1);
++ chip->cmdfunc(mtd, NAND_CMD_READ0, 0x0, 0x200);
++
++ chip->read_buf(mtd, buf, 2);
++ if (buf[0] != 0x8 || buf[1] != 0x8) {
++ ret = -EINVAL;
++ goto leave;
++ }
++ chip->read_buf(mtd, buf, 1024);
++
++ ret = 0;
++ for (j = 0; j < 8; j++) {
++ for (i = 0; i < 64; i++) {
++ u8 *tmp = buf + (128 * j);
++ if ((tmp[i] | tmp[i + 64]) != 0xff) {
++ ret = -EINVAL;
++ goto leave;
++ }
++ }
++ }
++
++ chip->cmdfunc(mtd, NAND_CMD_RESET, -1, -1);
++ chip->cmdfunc(mtd, 0x38, -1, -1);
++ chip->select_chip(mtd, -1);
++
++ if (!ret) {
++ hynix = kzalloc(sizeof(*hynix), GFP_KERNEL);
++ if (!hynix) {
++ ret = -ENOMEM;
++ goto leave;
++ }
++
++ hynix->read_retry.regs = h27ucg8t2a_read_retry_regs;
++ memcpy(hynix->read_retry.values, buf, 64);
++ chip->manuf_priv = hynix;
++ chip->setup_read_retry = nand_setup_read_retry_hynix;
++ chip->read_retries = 8;
++ chip->manuf_cleanup = h27ucg8t2a_cleanup;
++ }
++
++leave:
++ kfree(buf);
++
++ return ret;
++}
++
++struct hynix_nand_initializer {
++ u8 id[6];
++ int (*init)(struct mtd_info *mtd, const uint8_t *id);
++};
++
++struct hynix_nand_initializer initializers[] = {
++ {
++ .id = {NAND_MFR_HYNIX, 0xde, 0x94, 0xda, 0x74, 0xc4},
++ .init = h27ucg8t2a_init,
++ },
++};
++
++int hynix_nand_init(struct mtd_info *mtd, const uint8_t *id)
++{
++ int i;
++
++ for (i = 0; i < ARRAY_SIZE(initializers); i++) {
++ struct hynix_nand_initializer *initializer = &initializers[i];
++ if (memcmp(id, initializer->id, sizeof(initializer->id)))
++ continue;
++
++ return initializer->init(mtd, id);
++ }
++
++ return 0;
++}
++EXPORT_SYMBOL(hynix_nand_init);
++
++MODULE_LICENSE("GPL");
++MODULE_AUTHOR("Boris BREZILLON <b.brezillon.dev@gmail.com>");
++MODULE_DESCRIPTION("Hynix NAND specific code");
+diff --git a/drivers/mtd/nand/nand_ids.c b/drivers/mtd/nand/nand_ids.c
+index dd620c1..b786718 100644
+--- a/drivers/mtd/nand/nand_ids.c
++++ b/drivers/mtd/nand/nand_ids.c
+@@ -163,6 +163,7 @@ struct nand_flash_dev nand_flash_ids[] = {
+ {NULL}
+ };
+
++
+ /* Manufacturer IDs */
+ struct nand_manufacturers nand_manuf_ids[] = {
+ {NAND_MFR_TOSHIBA, "Toshiba"},
+@@ -171,7 +172,7 @@ struct nand_manufacturers nand_manuf_ids[] = {
+ {NAND_MFR_NATIONAL, "National"},
+ {NAND_MFR_RENESAS, "Renesas"},
+ {NAND_MFR_STMICRO, "ST Micro"},
+- {NAND_MFR_HYNIX, "Hynix"},
++ {NAND_MFR_HYNIX, "Hynix", hynix_nand_init},
+ {NAND_MFR_MICRON, "Micron"},
+ {NAND_MFR_AMD, "AMD/Spansion"},
+ {NAND_MFR_MACRONIX, "Macronix"},
+diff --git a/include/linux/mtd/nand.h b/include/linux/mtd/nand.h
+index 5844d6f..328aab2 100644
+--- a/include/linux/mtd/nand.h
++++ b/include/linux/mtd/nand.h
+@@ -959,6 +959,8 @@ struct nand_manufacturers {
+ extern struct nand_flash_dev nand_flash_ids[];
+ extern struct nand_manufacturers nand_manuf_ids[];
+
++int hynix_nand_init(struct mtd_info *mtd, const uint8_t *id);
++
+ extern int nand_scan_bbt(struct mtd_info *mtd, struct nand_bbt_descr *bd);
+ extern int nand_default_bbt(struct mtd_info *mtd);
+ extern int nand_markbad_bbt(struct mtd_info *mtd, loff_t offs);
--- /dev/null
+From f8ff99a839ed05e1e4993b543357183b095b77f1 Mon Sep 17 00:00:00 2001
+From: Michal Suchanek <hramrach@gmail.com>
+Date: Thu, 1 Jan 2015 16:44:45 +0100
+Subject: [PATCH] mtd: nand: Fix NAND_* options to use unique values.
+
+NAND_BUSWIDTH_AUTO (64b37b2a6) and NAND_USE_BOUNCE_BUFFER (66507c7bc)
+are the same value. Change the later introduced NAND_USE_BOUNCE_BUFFER
+to a different value.
+
+Signed-off-by: Michal Suchanek <hramrach@gmail.com>
+Signed-off-by: Hans de Goede <hdegoede@redhat.com>
+---
+ include/linux/mtd/nand.h | 12 ++++++------
+ 1 file changed, 6 insertions(+), 6 deletions(-)
+
+diff --git a/include/linux/mtd/nand.h b/include/linux/mtd/nand.h
+index 328aab2..c20f35b 100644
+--- a/include/linux/mtd/nand.h
++++ b/include/linux/mtd/nand.h
+@@ -176,17 +176,17 @@ typedef enum {
+ /* Chip may not exist, so silence any errors in scan */
+ #define NAND_SCAN_SILENT_NODEV 0x00040000
+ /*
+- * This option could be defined by controller drivers to protect against
+- * kmap'ed, vmalloc'ed highmem buffers being passed from upper layers
+- */
+-#define NAND_USE_BOUNCE_BUFFER 0x00080000
+-/*
+ * Autodetect nand buswidth with readid/onfi.
+ * This suppose the driver will configure the hardware in 8 bits mode
+ * when calling nand_scan_ident, and update its configuration
+ * before calling nand_scan_tail.
+ */
+-#define NAND_BUSWIDTH_AUTO 0x00080000
++#define NAND_BUSWIDTH_AUTO 0x00080000
++/*
++ * This option could be defined by controller drivers to protect against
++ * kmap'ed, vmalloc'ed highmem buffers being passed from upper layers
++ */
++#define NAND_USE_BOUNCE_BUFFER 0x00100000
+
+ /* Options set by nand scan */
+ /* Nand scan has allocated controller struct */
--- /dev/null
+From 3fecbdac2fe503fb6896ec08dd2474958d198d62 Mon Sep 17 00:00:00 2001
+From: Hans de Goede <hdegoede@redhat.com>
+Date: Sun, 24 May 2015 12:01:16 +0200
+Subject: [PATCH] mtd: nand: nand_decode_ext_id(): Fill in ecc strength and
+ size for Samsung
+
+On some nand controllers with hw-ecc the controller code wants to know the
+ecc strength and size and having these as 0, 0 is not accepted.
+
+Specifying these in devicetree is possible but undesirable as the nand
+may be different in different production runs of the same board, so it
+is better to get this info from the nand id where possible.
+
+This commit adds code to read the ecc strength and size from the nand for
+Samsung extended-id nands. This code is based on the info for the 5th
+id byte in the datasheets for the following Samsung nands: K9GAG08U0E,
+K9GAG08U0F, K9GAG08X0D, K9GBG08U0A, K9GBG08U0B. These all use these bits
+in the exact same way.
+
+Signed-off-by: Hans de Goede <hdegoede@redhat.com>
+---
+ drivers/mtd/nand/nand_base.c | 35 +++++++++++++++++++++++++++++++++++
+ 1 file changed, 35 insertions(+)
+
+diff --git a/drivers/mtd/nand/nand_base.c b/drivers/mtd/nand/nand_base.c
+index 51642c6..e3d4d8e 100644
+--- a/drivers/mtd/nand/nand_base.c
++++ b/drivers/mtd/nand/nand_base.c
+@@ -4063,6 +4063,41 @@ static void nand_decode_ext_id(struct mtd_info *mtd, struct nand_chip *chip,
+ mtd->erasesize = (128 * 1024) <<
+ (((extid >> 1) & 0x04) | (extid & 0x03));
+ *busw = 0;
++ /* Calc ecc strength and size from 5th id byte*/
++ switch ((id_data[4] >> 4) & 0x07) {
++ case 0:
++ chip->ecc_strength_ds = 1;
++ chip->ecc_step_ds = 512;
++ break;
++ case 1:
++ chip->ecc_strength_ds = 2;
++ chip->ecc_step_ds = 512;
++ break;
++ case 2:
++ chip->ecc_strength_ds = 4;
++ chip->ecc_step_ds = 512;
++ break;
++ case 3:
++ chip->ecc_strength_ds = 8;
++ chip->ecc_step_ds = 512;
++ break;
++ case 4:
++ chip->ecc_strength_ds = 16;
++ chip->ecc_step_ds = 512;
++ break;
++ case 5:
++ chip->ecc_strength_ds = 24;
++ chip->ecc_step_ds = 1024;
++ break;
++ case 6:
++ chip->ecc_strength_ds = 40;
++ chip->ecc_step_ds = 1024;
++ break;
++ case 7:
++ chip->ecc_strength_ds = 60;
++ chip->ecc_step_ds = 1024;
++ break;
++ }
+ } else if (id_len == 6 && id_data[0] == NAND_MFR_HYNIX &&
+ !nand_is_slc(chip)) {
+ unsigned int tmp;
--- /dev/null
+From ec6cde9ea451ffa94b4d0ccbbcbe15c0d35f73d8 Mon Sep 17 00:00:00 2001
+From: Hans de Goede <hdegoede@redhat.com>
+Date: Mon, 25 May 2015 12:57:48 +0200
+Subject: [PATCH] mtd: nand: nand_get_flash_type: Print detected ECC strength
+ and size
+
+Print the detected ECC strength and size from nand_get_flash_type().
+
+Signed-off-by: Hans de Goede <hdegoede@redhat.com>
+---
+ drivers/mtd/nand/nand_base.c | 6 ++++--
+ 1 file changed, 4 insertions(+), 2 deletions(-)
+
+diff --git a/drivers/mtd/nand/nand_base.c b/drivers/mtd/nand/nand_base.c
+index e3d4d8e..5c6f465 100644
+--- a/drivers/mtd/nand/nand_base.c
++++ b/drivers/mtd/nand/nand_base.c
+@@ -4437,9 +4437,11 @@ static struct nand_flash_dev *nand_get_flash_type(struct mtd_info *mtd,
+ pr_info("%s %s\n", nand_manuf_ids[maf_idx].name,
+ type->name);
+
+- pr_info("%d MiB, %s, erase size: %d KiB, page size: %d, OOB size: %d\n",
++ pr_info("%d MiB, %s, erase size: %d KiB, page size: %d, "
++ "OOB size: %d, ECC strength %d size %d\n",
+ (int)(chip->chipsize >> 20), nand_is_slc(chip) ? "SLC" : "MLC",
+- mtd->erasesize >> 10, mtd->writesize, mtd->oobsize);
++ mtd->erasesize >> 10, mtd->writesize, mtd->oobsize,
++ chip->ecc_strength_ds, chip->ecc_step_ds);
+ return type;
+ }
+
--- /dev/null
+From fb177d5b534f263735dc6955703e3c711b950f35 Mon Sep 17 00:00:00 2001
+From: Michal Suchanek <hramrach@gmail.com>
+Date: Thu, 1 Jan 2015 00:57:46 +0100
+Subject: [PATCH] mtd: nand: print full chip ID
+
+Full chip ID is printed so user has data to paste from syslog in case
+of chip misidentification.
+
+Signed-off-by: Michal Suchanek <hramrach@gmail.com>
+Signed-off-by: Hans de Goede <hdegoede@redhat.com>
+---
+ drivers/mtd/nand/nand_base.c | 23 ++++++++++++++++++-----
+ 1 file changed, 18 insertions(+), 5 deletions(-)
+
+diff --git a/drivers/mtd/nand/nand_base.c b/drivers/mtd/nand/nand_base.c
+index 5c6f465..05ec786 100644
+--- a/drivers/mtd/nand/nand_base.c
++++ b/drivers/mtd/nand/nand_base.c
+@@ -4247,7 +4247,7 @@ static inline bool is_full_id_nand(struct nand_flash_dev *type)
+ }
+
+ static bool find_full_id_nand(struct mtd_info *mtd, struct nand_chip *chip,
+- struct nand_flash_dev *type, u8 *id_data, int *busw)
++ struct nand_flash_dev *type, const u8 *id_data, int *busw)
+ {
+ if (!strncmp(type->id, id_data, type->id_len)) {
+ mtd->writesize = type->pagesize;
+@@ -4273,6 +4273,21 @@ static bool find_full_id_nand(struct mtd_info *mtd, struct nand_chip *chip,
+ }
+
+ /*
++ * Print full detail of chip ID read from chip.
++ */
++static void print_nand_chip_info(int maf_id, int dev_id, u8 id_data[8])
++{
++ u8 delim[8] = { [0 ... 7] = ',' };
++ pr_info("device found, Manufacturer ID: 0x%02x, Chip ID: 0x%02x\n", maf_id, dev_id);
++ delim[7] = ' ';
++ delim[nand_id_len(id_data, 8) - 1] = ';';
++ /* This sucks. Kernel seems to insert newline after every other printk so format in one go. */
++ pr_info("chip id data: 0x%02x%c 0x%02x%c 0x%02x%c 0x%02x%c 0x%02x%c 0x%02x%c 0x%02x%c 0x%02x%c\n",
++ id_data[0], delim[0], id_data[1], delim[1], id_data[2], delim[2], id_data[3], delim[3],
++ id_data[4], delim[4], id_data[5], delim[5], id_data[6], delim[6], id_data[7], delim[7]);
++}
++
++/*
+ * Get the flash and manufacturer id and lookup if the type is supported.
+ */
+ static struct nand_flash_dev *nand_get_flash_type(struct mtd_info *mtd,
+@@ -4385,8 +4400,7 @@ static struct nand_flash_dev *nand_get_flash_type(struct mtd_info *mtd,
+ * Check, if buswidth is correct. Hardware drivers should set
+ * chip correct!
+ */
+- pr_info("device found, Manufacturer ID: 0x%02x, Chip ID: 0x%02x\n",
+- *maf_id, *dev_id);
++ print_nand_chip_info(*maf_id, *dev_id, id_data);
+ pr_info("%s %s\n", nand_manuf_ids[maf_idx].name, mtd->name);
+ pr_warn("bus width %d instead %d bit\n",
+ (chip->options & NAND_BUSWIDTH_16) ? 16 : 8,
+@@ -4424,8 +4438,7 @@ static struct nand_flash_dev *nand_get_flash_type(struct mtd_info *mtd,
+ return ERR_PTR(err);
+ }
+
+- pr_info("device found, Manufacturer ID: 0x%02x, Chip ID: 0x%02x\n",
+- *maf_id, *dev_id);
++ print_nand_chip_info(*maf_id, *dev_id, id_data);
+
+ if (chip->onfi_version)
+ pr_info("%s %s\n", nand_manuf_ids[maf_idx].name,
--- /dev/null
+From 5cb31780791d0f6b68e3712f1b35f1a28c47add0 Mon Sep 17 00:00:00 2001
+From: Boris Brezillon <boris.brezillon@free-electrons.com>
+Date: Tue, 21 Oct 2014 14:37:15 +0200
+Subject: [PATCH] mtd: nand: sunxi: Add NAND partition support
+
+Add NAND partition support to the sunxi_nand driver.
+
+Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
+Signed-off-by: Hans de Goede <hdegoede@redhat.com>
+---
+ drivers/mtd/nand/Kconfig | 1 +
+ drivers/mtd/nand/sunxi_nand.c | 73 +++++++++++++++++++++++++++++++++++++------
+ 2 files changed, 65 insertions(+), 9 deletions(-)
+
+diff --git a/drivers/mtd/nand/Kconfig b/drivers/mtd/nand/Kconfig
+index 8242470..7df88c6 100644
+--- a/drivers/mtd/nand/Kconfig
++++ b/drivers/mtd/nand/Kconfig
+@@ -525,6 +525,7 @@ config MTD_NAND_XWAY
+ config MTD_NAND_SUNXI
+ tristate "Support for NAND on Allwinner SoCs"
+ depends on ARCH_SUNXI
++ select MTD_OF_NAND_PARTS
+ help
+ Enables support for NAND Flash chips on Allwinner SoCs.
+
+diff --git a/drivers/mtd/nand/sunxi_nand.c b/drivers/mtd/nand/sunxi_nand.c
+index 6f93b29..c3e0473 100644
+--- a/drivers/mtd/nand/sunxi_nand.c
++++ b/drivers/mtd/nand/sunxi_nand.c
+@@ -202,6 +202,23 @@ struct sunxi_nand_hw_ecc {
+ };
+
+ /*
++ * sunxi NAND partition structure: stores NAND partitions information
++ *
++ * @part: base paritition structure
++ * @ecc: per-partition ECC info
++ */
++struct sunxi_nand_part {
++ struct nand_part part;
++ struct nand_ecc_ctrl ecc;
++};
++
++static inline struct sunxi_nand_part *
++to_sunxi_nand_part(struct nand_part *part)
++{
++ return container_of(part, struct sunxi_nand_part, part);
++}
++
++/*
+ * NAND chip structure: stores NAND chip device related information
+ *
+ * @node: used to store NAND chips into a list
+@@ -521,7 +538,7 @@ static int sunxi_nfc_hw_ecc_read_page(struct mtd_info *mtd,
+ int oob_required, int page)
+ {
+ struct sunxi_nfc *nfc = to_sunxi_nfc(chip->controller);
+- struct nand_ecc_ctrl *ecc = &chip->ecc;
++ struct nand_ecc_ctrl *ecc = chip->cur_ecc;
+ struct nand_ecclayout *layout = ecc->layout;
+ struct sunxi_nand_hw_ecc *data = ecc->priv;
+ unsigned int max_bitflips = 0;
+@@ -607,7 +624,7 @@ static int sunxi_nfc_hw_ecc_write_page(struct mtd_info *mtd,
+ const uint8_t *buf, int oob_required)
+ {
+ struct sunxi_nfc *nfc = to_sunxi_nfc(chip->controller);
+- struct nand_ecc_ctrl *ecc = &chip->ecc;
++ struct nand_ecc_ctrl *ecc = chip->cur_ecc;
+ struct nand_ecclayout *layout = ecc->layout;
+ struct sunxi_nand_hw_ecc *data = ecc->priv;
+ int offset;
+@@ -681,7 +698,7 @@ static int sunxi_nfc_hw_syndrome_ecc_read_page(struct mtd_info *mtd,
+ int page)
+ {
+ struct sunxi_nfc *nfc = to_sunxi_nfc(chip->controller);
+- struct nand_ecc_ctrl *ecc = &chip->ecc;
++ struct nand_ecc_ctrl *ecc = chip->cur_ecc;
+ struct sunxi_nand_hw_ecc *data = ecc->priv;
+ unsigned int max_bitflips = 0;
+ uint8_t *oob = chip->oob_poi;
+@@ -749,7 +766,7 @@ static int sunxi_nfc_hw_syndrome_ecc_write_page(struct mtd_info *mtd,
+ int oob_required)
+ {
+ struct sunxi_nfc *nfc = to_sunxi_nfc(chip->controller);
+- struct nand_ecc_ctrl *ecc = &chip->ecc;
++ struct nand_ecc_ctrl *ecc = chip->cur_ecc;
+ struct sunxi_nand_hw_ecc *data = ecc->priv;
+ uint8_t *oob = chip->oob_poi;
+ int offset = 0;
+@@ -1099,8 +1116,13 @@ static int sunxi_nand_ecc_init(struct mtd_info *mtd, struct nand_ecc_ctrl *ecc,
+ ecc->strength = nand->ecc_strength_ds;
+ }
+
+- if (!ecc->size || !ecc->strength)
+- return -EINVAL;
++ if (!ecc->size || !ecc->strength) {
++ if (ecc == &nand->ecc)
++ return -EINVAL;
++
++ ecc->size = nand->ecc.size;
++ ecc->strength = nand->ecc.strength;
++ }
+
+ ecc->mode = NAND_ECC_HW;
+
+@@ -1135,12 +1157,39 @@ static int sunxi_nand_ecc_init(struct mtd_info *mtd, struct nand_ecc_ctrl *ecc,
+ return 0;
+ }
+
++static void sunxi_nand_part_release(struct nand_part *part)
++{
++ kfree(to_sunxi_nand_part(part));
++}
++
++struct nand_part *sunxi_ofnandpart_parse(void *priv, struct mtd_info *master,
++ struct device_node *pp)
++{
++ struct sunxi_nand_part *part;
++ int ret;
++
++ part = kzalloc(sizeof(*part), GFP_KERNEL);
++ part->part.release = sunxi_nand_part_release;
++
++ ret = sunxi_nand_ecc_init(master, &part->ecc, pp);
++ if (ret)
++ goto err;
++
++ part->part.ecc = &part->ecc;
++
++ return &part->part;
++
++err:
++ kfree(part);
++ return ERR_PTR(ret);
++}
++
+ static int sunxi_nand_chip_init(struct device *dev, struct sunxi_nfc *nfc,
+ struct device_node *np)
+ {
+ const struct nand_sdr_timings *timings;
+ struct sunxi_nand_chip *chip;
+- struct mtd_part_parser_data ppdata;
++ struct ofnandpart_data ppdata;
+ struct mtd_info *mtd;
+ struct nand_chip *nand;
+ int nsels;
+@@ -1269,8 +1318,14 @@ static int sunxi_nand_chip_init(struct device *dev, struct sunxi_nfc *nfc,
+ return ret;
+ }
+
+- ppdata.of_node = np;
+- ret = mtd_device_parse_register(mtd, NULL, &ppdata, NULL, 0);
++ ppdata.node = np;
++ ppdata.parse = sunxi_ofnandpart_parse;
++ ret = ofnandpart_parse(mtd, &ppdata);
++ if (!ret)
++ ret = mtd_device_register(mtd, NULL, 0);
++ else if (ret > 0)
++ ret = 0;
++
+ if (ret) {
+ dev_err(dev, "failed to register mtd device: %d\n", ret);
+ nand_release(mtd);
--- /dev/null
+From ef4bc8ab68979e5c1c30f061c5af1a7d6ec8eb52 Mon Sep 17 00:00:00 2001
+From: Boris Brezillon <boris.brezillon@free-electrons.com>
+Date: Tue, 21 Oct 2014 14:40:42 +0200
+Subject: [PATCH] mtd: nand: sunxi: Add HW randomizer support
+
+Add support for the HW randomizer available on the sunxi nand controller.
+
+Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
+Signed-off-by: Hans de Goede <hdegoede@redhat.com>
+---
+ drivers/mtd/nand/sunxi_nand.c | 603 ++++++++++++++++++++++++++++++++++++++++--
+ 1 file changed, 585 insertions(+), 18 deletions(-)
+
+diff --git a/drivers/mtd/nand/sunxi_nand.c b/drivers/mtd/nand/sunxi_nand.c
+index c3e0473..2f6ab39 100644
+--- a/drivers/mtd/nand/sunxi_nand.c
++++ b/drivers/mtd/nand/sunxi_nand.c
+@@ -206,10 +206,12 @@ struct sunxi_nand_hw_ecc {
+ *
+ * @part: base paritition structure
+ * @ecc: per-partition ECC info
++ * @rnd: per-partition randomizer info
+ */
+ struct sunxi_nand_part {
+ struct nand_part part;
+ struct nand_ecc_ctrl ecc;
++ struct nand_rnd_ctrl rnd;
+ };
+
+ static inline struct sunxi_nand_part *
+@@ -219,6 +221,29 @@ to_sunxi_nand_part(struct nand_part *part)
+ }
+
+ /*
++ * sunxi NAND randomizer structure: stores NAND randomizer information
++ *
++ * @page: current page
++ * @column: current column
++ * @nseeds: seed table size
++ * @seeds: seed table
++ * @subseeds: pre computed sub seeds
++ * @step: step function
++ * @left: number of remaining bytes in the page
++ * @state: current randomizer state
++ */
++struct sunxi_nand_hw_rnd {
++ int page;
++ int column;
++ int nseeds;
++ u16 *seeds;
++ u16 *subseeds;
++ u16 (*step)(struct mtd_info *mtd, u16 state, int column, int *left);
++ int left;
++ u16 state;
++};
++
++/*
+ * NAND chip structure: stores NAND chip device related information
+ *
+ * @node: used to store NAND chips into a list
+@@ -233,6 +258,7 @@ struct sunxi_nand_chip {
+ struct list_head node;
+ struct nand_chip nand;
+ struct mtd_info mtd;
++ void *buffer;
+ unsigned long clk_rate;
+ int selected;
+ int nsels;
+@@ -489,6 +515,185 @@ static void sunxi_nfc_write_buf(struct mtd_info *mtd, const uint8_t *buf,
+ }
+ }
+
++static u16 sunxi_nfc_hwrnd_step(struct sunxi_nand_hw_rnd *rnd, u16 state, int count)
++{
++ state &= 0x7fff;
++ count *= 8;
++ while (count--)
++ state = ((state >> 1) |
++ ((((state >> 0) ^ (state >> 1)) & 1) << 14)) & 0x7fff;
++
++ return state;
++}
++
++static u16 sunxi_nfc_hwrnd_single_step(u16 state, int count)
++{
++ state &= 0x7fff;
++ while (count--)
++ state = ((state >> 1) |
++ ((((state >> 0) ^ (state >> 1)) & 1) << 14)) & 0x7fff;
++
++ return state;
++}
++
++static int sunxi_nfc_hwrnd_config(struct mtd_info *mtd, int page, int column,
++ enum nand_rnd_action action)
++{
++ struct nand_chip *nand = mtd->priv;
++ struct sunxi_nand_chip *sunxi_nand = to_sunxi_nand(nand);
++ struct sunxi_nand_hw_rnd *rnd = nand->cur_rnd->priv;
++ u16 state;
++
++ if (page < 0 && column < 0) {
++ rnd->page = -1;
++ rnd->column = -1;
++ return 0;
++ }
++
++ if (column < 0)
++ column = 0;
++ if (page < 0)
++ page = rnd->page;
++
++ if (page < 0)
++ return -EINVAL;
++
++ if (page != rnd->page && action == NAND_RND_READ) {
++ int status;
++
++ status = nand_page_get_status(mtd, page);
++ if (status == NAND_PAGE_STATUS_UNKNOWN) {
++ nand->cmdfunc(mtd, NAND_CMD_RNDOUT, 0, -1);
++ sunxi_nfc_read_buf(mtd, sunxi_nand->buffer,
++ mtd->writesize + mtd->oobsize);
++
++ if (nand_page_is_empty(mtd, sunxi_nand->buffer,
++ sunxi_nand->buffer +
++ mtd->writesize))
++ status = NAND_PAGE_EMPTY;
++ else
++ status = NAND_PAGE_FILLED;
++
++ nand_page_set_status(mtd, page, status);
++ nand->cmdfunc(mtd, NAND_CMD_RNDOUT, column, -1);
++ }
++ }
++
++ state = rnd->seeds[page % rnd->nseeds];
++ rnd->page = page;
++ rnd->column = column;
++
++ if (rnd->step) {
++ rnd->state = rnd->step(mtd, state, column, &rnd->left);
++ } else {
++ rnd->state = sunxi_nfc_hwrnd_step(rnd, state, column % 4096);
++ rnd->left = mtd->oobsize + mtd->writesize - column;
++ }
++
++ return 0;
++}
++
++static void sunxi_nfc_hwrnd_write_buf(struct mtd_info *mtd, const uint8_t *buf,
++ int len)
++{
++ struct nand_chip *nand = mtd->priv;
++ struct sunxi_nfc *nfc = to_sunxi_nfc(nand->controller);
++ struct sunxi_nand_hw_rnd *rnd = nand->cur_rnd->priv;
++ u32 tmp = readl(nfc->regs + NFC_REG_ECC_CTL);
++ int cnt;
++ int offs = 0;
++ int rndactiv;
++
++ tmp &= ~(NFC_RANDOM_DIRECTION | NFC_RANDOM_SEED | NFC_RANDOM_EN);
++ writel(tmp, nfc->regs + NFC_REG_ECC_CTL);
++
++ if (rnd->page < 0) {
++ sunxi_nfc_write_buf(mtd, buf, len);
++ return;
++ }
++
++ while (len > offs) {
++ cnt = len - offs;
++ if (cnt > 1024)
++ cnt = 1024;
++
++ rndactiv = nand_rnd_is_activ(mtd, rnd->page, rnd->column,
++ &cnt);
++ if (rndactiv > 0) {
++ writel(tmp | NFC_RANDOM_EN | (rnd->state << 16),
++ nfc->regs + NFC_REG_ECC_CTL);
++ if (rnd->left < cnt)
++ cnt = rnd->left;
++ }
++
++ sunxi_nfc_write_buf(mtd, buf + offs, cnt);
++
++ if (rndactiv > 0)
++ writel(tmp & ~NFC_RANDOM_EN,
++ nfc->regs + NFC_REG_ECC_CTL);
++
++ offs += cnt;
++ if (len <= offs)
++ break;
++
++ sunxi_nfc_hwrnd_config(mtd, -1, rnd->column + cnt, NAND_RND_WRITE);
++ }
++}
++
++static void sunxi_nfc_hwrnd_read_buf(struct mtd_info *mtd, uint8_t *buf,
++ int len)
++{
++ struct nand_chip *nand = mtd->priv;
++ struct sunxi_nfc *nfc = to_sunxi_nfc(nand->controller);
++ struct sunxi_nand_hw_rnd *rnd = nand->cur_rnd->priv;
++ u32 tmp = readl(nfc->regs + NFC_REG_ECC_CTL);
++ int cnt;
++ int offs = 0;
++ int rndactiv;
++
++ tmp &= ~(NFC_RANDOM_DIRECTION | NFC_RANDOM_SEED | NFC_RANDOM_EN);
++ writel(tmp, nfc->regs + NFC_REG_ECC_CTL);
++
++ if (rnd->page < 0) {
++ sunxi_nfc_read_buf(mtd, buf, len);
++ return;
++ }
++
++ while (len > offs) {
++ cnt = len - offs;
++ if (cnt > 1024)
++ cnt = 1024;
++
++ if (nand_page_get_status(mtd, rnd->page) != NAND_PAGE_EMPTY &&
++ nand_rnd_is_activ(mtd, rnd->page, rnd->column, &cnt) > 0)
++ rndactiv = 1;
++ else
++ rndactiv = 0;
++
++ if (rndactiv > 0) {
++ writel(tmp | NFC_RANDOM_EN | (rnd->state << 16),
++ nfc->regs + NFC_REG_ECC_CTL);
++ if (rnd->left < cnt)
++ cnt = rnd->left;
++ }
++
++ if (buf)
++ sunxi_nfc_read_buf(mtd, buf + offs, cnt);
++ else
++ sunxi_nfc_read_buf(mtd, NULL, cnt);
++
++ if (rndactiv > 0)
++ writel(tmp & ~NFC_RANDOM_EN,
++ nfc->regs + NFC_REG_ECC_CTL);
++
++ offs += cnt;
++ if (len <= offs)
++ break;
++
++ sunxi_nfc_hwrnd_config(mtd, -1, rnd->column + cnt, NAND_RND_READ);
++ }
++}
++
+ static uint8_t sunxi_nfc_read_byte(struct mtd_info *mtd)
+ {
+ uint8_t ret;
+@@ -538,16 +743,43 @@ static int sunxi_nfc_hw_ecc_read_page(struct mtd_info *mtd,
+ int oob_required, int page)
+ {
+ struct sunxi_nfc *nfc = to_sunxi_nfc(chip->controller);
++ struct sunxi_nand_chip *sunxi_nand = to_sunxi_nand(chip);
+ struct nand_ecc_ctrl *ecc = chip->cur_ecc;
+ struct nand_ecclayout *layout = ecc->layout;
+ struct sunxi_nand_hw_ecc *data = ecc->priv;
+ unsigned int max_bitflips = 0;
++ int status;
+ int offset;
+ int ret;
+ u32 tmp;
+ int i;
+ int cnt;
+
++ status = nand_page_get_status(mtd, page);
++ if (status == NAND_PAGE_STATUS_UNKNOWN) {
++ chip->cmdfunc(mtd, NAND_CMD_RNDOUT, 0, -1);
++ sunxi_nfc_read_buf(mtd, sunxi_nand->buffer,
++ mtd->writesize + mtd->oobsize);
++
++ if (nand_page_is_empty(mtd, sunxi_nand->buffer,
++ sunxi_nand->buffer +
++ mtd->writesize)) {
++ status = NAND_PAGE_EMPTY;
++ } else {
++ status = NAND_PAGE_FILLED;
++ chip->cmdfunc(mtd, NAND_CMD_RNDOUT, 0, -1);
++ }
++
++ nand_page_set_status(mtd, page, status);
++ }
++
++ if (status == NAND_PAGE_EMPTY) {
++ memset(buf, 0xff, mtd->writesize);
++ if (oob_required)
++ memset(chip->oob_poi, 0xff, mtd->oobsize);
++ return 0;
++ }
++
+ tmp = readl(nfc->regs + NFC_REG_ECC_CTL);
+ tmp &= ~(NFC_ECC_MODE | NFC_ECC_PIPELINE | NFC_ECC_BLOCK_SIZE);
+ tmp |= NFC_ECC_EN | (data->mode << NFC_ECC_MODE_SHIFT) |
+@@ -556,12 +788,15 @@ static int sunxi_nfc_hw_ecc_read_page(struct mtd_info *mtd,
+ writel(tmp, nfc->regs + NFC_REG_ECC_CTL);
+
+ for (i = 0; i < ecc->steps; i++) {
++ bool rndactiv = false;
++
+ if (i)
+ chip->cmdfunc(mtd, NAND_CMD_RNDOUT, i * ecc->size, -1);
+
+ offset = mtd->writesize + layout->eccpos[i * ecc->bytes] - 4;
+
+- chip->read_buf(mtd, NULL, ecc->size);
++ nand_rnd_config(mtd, page, i * ecc->size, NAND_RND_READ);
++ nand_rnd_read_buf(mtd, NULL, ecc->size);
+
+ chip->cmdfunc(mtd, NAND_CMD_RNDOUT, offset, -1);
+
+@@ -569,6 +804,25 @@ static int sunxi_nfc_hw_ecc_read_page(struct mtd_info *mtd,
+ if (ret)
+ return ret;
+
++ if (i) {
++ cnt = ecc->bytes + 4;
++ if (nand_rnd_is_activ(mtd, page, offset, &cnt) > 0 &&
++ cnt == ecc->bytes + 4)
++ rndactiv = true;
++ } else {
++ cnt = ecc->bytes + 2;
++ if (nand_rnd_is_activ(mtd, page, offset + 2, &cnt) > 0 &&
++ cnt == ecc->bytes + 2)
++ rndactiv = true;
++ }
++
++ if (rndactiv) {
++ tmp = readl(nfc->regs + NFC_REG_ECC_CTL);
++ tmp &= ~(NFC_RANDOM_DIRECTION | NFC_ECC_EXCEPTION);
++ tmp |= NFC_RANDOM_EN;
++ writel(tmp, nfc->regs + NFC_REG_ECC_CTL);
++ }
++
+ tmp = NFC_DATA_TRANS | NFC_DATA_SWAP_METHOD | (1 << 30);
+ writel(tmp, nfc->regs + NFC_REG_CMD);
+
+@@ -579,6 +833,9 @@ static int sunxi_nfc_hw_ecc_read_page(struct mtd_info *mtd,
+ memcpy_fromio(buf + (i * ecc->size),
+ nfc->regs + NFC_RAM0_BASE, ecc->size);
+
++ writel(readl(nfc->regs + NFC_REG_ECC_CTL) & ~NFC_RANDOM_EN,
++ nfc->regs + NFC_REG_ECC_CTL);
++
+ if (readl(nfc->regs + NFC_REG_ECC_ST) & 0x1) {
+ mtd->ecc_stats.failed++;
+ } else {
+@@ -594,9 +851,10 @@ static int sunxi_nfc_hw_ecc_read_page(struct mtd_info *mtd,
+ if (ret)
+ return ret;
+
++ nand_rnd_config(mtd, -1, offset, NAND_RND_READ);
+ offset -= mtd->writesize;
+- chip->read_buf(mtd, chip->oob_poi + offset,
+- ecc->bytes + 4);
++ nand_rnd_read_buf(mtd, chip->oob_poi + offset,
++ ecc->bytes + 4);
+ }
+ }
+
+@@ -606,11 +864,14 @@ static int sunxi_nfc_hw_ecc_read_page(struct mtd_info *mtd,
+ offset = mtd->writesize +
+ ecc->layout->oobfree[ecc->steps].offset;
+ chip->cmdfunc(mtd, NAND_CMD_RNDOUT, offset, -1);
++ nand_rnd_config(mtd, -1, offset, NAND_RND_READ);
+ offset -= mtd->writesize;
+- chip->read_buf(mtd, chip->oob_poi + offset, cnt);
++ nand_rnd_read_buf(mtd, chip->oob_poi + offset, cnt);
+ }
+ }
+
++ nand_rnd_config(mtd, -1, -1, NAND_RND_READ);
++
+ tmp = readl(nfc->regs + NFC_REG_ECC_CTL);
+ tmp &= ~NFC_ECC_EN;
+
+@@ -627,6 +888,7 @@ static int sunxi_nfc_hw_ecc_write_page(struct mtd_info *mtd,
+ struct nand_ecc_ctrl *ecc = chip->cur_ecc;
+ struct nand_ecclayout *layout = ecc->layout;
+ struct sunxi_nand_hw_ecc *data = ecc->priv;
++ struct sunxi_nand_hw_rnd *rnd = chip->cur_rnd->priv;
+ int offset;
+ int ret;
+ u32 tmp;
+@@ -641,22 +903,56 @@ static int sunxi_nfc_hw_ecc_write_page(struct mtd_info *mtd,
+ writel(tmp, nfc->regs + NFC_REG_ECC_CTL);
+
+ for (i = 0; i < ecc->steps; i++) {
++ bool rndactiv = false;
++ u8 oob_buf[4];
++
+ if (i)
+ chip->cmdfunc(mtd, NAND_CMD_RNDIN, i * ecc->size, -1);
+
+- chip->write_buf(mtd, buf + (i * ecc->size), ecc->size);
++ nand_rnd_config(mtd, -1, i * ecc->size, NAND_RND_WRITE);
++ nand_rnd_write_buf(mtd, buf + (i * ecc->size), ecc->size);
+
+ offset = layout->eccpos[i * ecc->bytes] - 4 + mtd->writesize;
+
+ /* Fill OOB data in */
+- if (oob_required) {
+- tmp = 0xffffffff;
+- memcpy_toio(nfc->regs + NFC_REG_USER_DATA_BASE, &tmp,
+- 4);
++ if (!oob_required)
++ memset(oob_buf, 0xff, 4);
++ else
++ memcpy(oob_buf,
++ chip->oob_poi + layout->oobfree[i].offset,
++ 4);
++
++
++ memcpy_toio(nfc->regs + NFC_REG_USER_DATA_BASE, oob_buf, 4);
++
++ if (i) {
++ cnt = ecc->bytes + 4;
++ if (rnd &&
++ nand_rnd_is_activ(mtd, -1, offset, &cnt) > 0 &&
++ cnt == ecc->bytes + 4)
++ rndactiv = true;
+ } else {
+- memcpy_toio(nfc->regs + NFC_REG_USER_DATA_BASE,
+- chip->oob_poi + offset - mtd->writesize,
+- 4);
++ cnt = ecc->bytes + 2;
++ if (rnd &&
++ nand_rnd_is_activ(mtd, -1, offset + 2, &cnt) > 0 &&
++ cnt == ecc->bytes + 2)
++ rndactiv = true;
++ }
++
++ if (rndactiv) {
++ /* pre randomize to generate FF patterns on the NAND */
++ if (!i) {
++ u16 state = rnd->subseeds[rnd->page % rnd->nseeds];
++ state = sunxi_nfc_hwrnd_single_step(state, 15);
++ oob_buf[0] ^= state;
++ state = sunxi_nfc_hwrnd_step(rnd, state, 1);
++ oob_buf[1] ^= state;
++ memcpy_toio(nfc->regs + NFC_REG_USER_DATA_BASE, oob_buf, 4);
++ }
++ tmp = readl(nfc->regs + NFC_REG_ECC_CTL);
++ tmp &= ~(NFC_RANDOM_DIRECTION | NFC_ECC_EXCEPTION);
++ tmp |= NFC_RANDOM_EN;
++ writel(tmp, nfc->regs + NFC_REG_ECC_CTL);
+ }
+
+ chip->cmdfunc(mtd, NAND_CMD_RNDIN, offset, -1);
+@@ -671,6 +967,9 @@ static int sunxi_nfc_hw_ecc_write_page(struct mtd_info *mtd,
+ ret = sunxi_nfc_wait_int(nfc, NFC_CMD_INT_FLAG, 0);
+ if (ret)
+ return ret;
++
++ writel(readl(nfc->regs + NFC_REG_ECC_CTL) & ~NFC_RANDOM_EN,
++ nfc->regs + NFC_REG_ECC_CTL);
+ }
+
+ if (oob_required) {
+@@ -679,11 +978,14 @@ static int sunxi_nfc_hw_ecc_write_page(struct mtd_info *mtd,
+ offset = mtd->writesize +
+ ecc->layout->oobfree[i].offset;
+ chip->cmdfunc(mtd, NAND_CMD_RNDIN, offset, -1);
++ nand_rnd_config(mtd, -1, offset, NAND_RND_WRITE);
+ offset -= mtd->writesize;
+- chip->write_buf(mtd, chip->oob_poi + offset, cnt);
++ nand_rnd_write_buf(mtd, chip->oob_poi + offset, cnt);
+ }
+ }
+
++ nand_rnd_config(mtd, -1, -1, NAND_RND_WRITE);
++
+ tmp = readl(nfc->regs + NFC_REG_ECC_CTL);
+ tmp &= ~NFC_ECC_EN;
+
+@@ -692,22 +994,76 @@ static int sunxi_nfc_hw_ecc_write_page(struct mtd_info *mtd,
+ return 0;
+ }
+
++static u16 sunxi_nfc_hw_ecc_rnd_steps(struct mtd_info *mtd, u16 state,
++ int column, int *left)
++{
++ struct nand_chip *chip = mtd->priv;
++ struct nand_ecc_ctrl *ecc = chip->cur_ecc;
++ struct sunxi_nand_hw_rnd *rnd = chip->cur_rnd->priv;
++ int nblks = mtd->writesize / ecc->size;
++ int modsize = ecc->size;
++ int steps;
++
++ if (column < mtd->writesize) {
++ steps = column % modsize;
++ *left = modsize - steps;
++ } else if (column < mtd->writesize +
++ (nblks * (ecc->bytes + 4))) {
++ column -= mtd->writesize;
++ steps = column % (ecc->bytes + 4);
++ *left = ecc->bytes + 4 - steps;
++ state = rnd->subseeds[rnd->page % rnd->nseeds];
++ } else {
++ steps = column % 4096;
++ *left = mtd->writesize + mtd->oobsize - column;
++ }
++
++ return sunxi_nfc_hwrnd_step(rnd, state, steps);
++}
++
+ static int sunxi_nfc_hw_syndrome_ecc_read_page(struct mtd_info *mtd,
+ struct nand_chip *chip,
+ uint8_t *buf, int oob_required,
+ int page)
+ {
+ struct sunxi_nfc *nfc = to_sunxi_nfc(chip->controller);
++ struct sunxi_nand_chip *sunxi_nand = to_sunxi_nand(chip);
+ struct nand_ecc_ctrl *ecc = chip->cur_ecc;
+ struct sunxi_nand_hw_ecc *data = ecc->priv;
+ unsigned int max_bitflips = 0;
+ uint8_t *oob = chip->oob_poi;
+ int offset = 0;
+ int ret;
++ int status;
+ int cnt;
+ u32 tmp;
+ int i;
+
++ status = nand_page_get_status(mtd, page);
++ if (status == NAND_PAGE_STATUS_UNKNOWN) {
++ chip->cmdfunc(mtd, NAND_CMD_RNDOUT, 0, -1);
++ sunxi_nfc_read_buf(mtd, sunxi_nand->buffer,
++ mtd->writesize + mtd->oobsize);
++
++ if (nand_page_is_empty(mtd, sunxi_nand->buffer,
++ sunxi_nand->buffer +
++ mtd->writesize)) {
++ status = NAND_PAGE_EMPTY;
++ } else {
++ status = NAND_PAGE_FILLED;
++ chip->cmdfunc(mtd, NAND_CMD_RNDOUT, 0, -1);
++ }
++
++ nand_page_set_status(mtd, page, status);
++ }
++
++ if (status == NAND_PAGE_EMPTY) {
++ memset(buf, 0xff, mtd->writesize);
++ if (oob_required)
++ memset(chip->oob_poi, 0xff, mtd->oobsize);
++ return 0;
++ }
++
+ tmp = readl(nfc->regs + NFC_REG_ECC_CTL);
+ tmp &= ~(NFC_ECC_MODE | NFC_ECC_PIPELINE | NFC_ECC_BLOCK_SIZE);
+ tmp |= NFC_ECC_EN | (data->mode << NFC_ECC_MODE_SHIFT) |
+@@ -716,7 +1072,17 @@ static int sunxi_nfc_hw_syndrome_ecc_read_page(struct mtd_info *mtd,
+ writel(tmp, nfc->regs + NFC_REG_ECC_CTL);
+
+ for (i = 0; i < ecc->steps; i++) {
+- chip->read_buf(mtd, NULL, ecc->size);
++ nand_rnd_config(mtd, page, offset, NAND_RND_READ);
++ nand_rnd_read_buf(mtd, NULL, ecc->size);
++
++ cnt = ecc->bytes + 4;
++ if (nand_rnd_is_activ(mtd, page, offset, &cnt) > 0 &&
++ cnt == ecc->bytes + 4) {
++ tmp = readl(nfc->regs + NFC_REG_ECC_CTL);
++ tmp &= ~(NFC_RANDOM_DIRECTION | NFC_ECC_EXCEPTION);
++ tmp |= NFC_RANDOM_EN;
++ writel(tmp, nfc->regs + NFC_REG_ECC_CTL);
++ }
+
+ tmp = NFC_DATA_TRANS | NFC_DATA_SWAP_METHOD | (1 << 30);
+ writel(tmp, nfc->regs + NFC_REG_CMD);
+@@ -729,6 +1095,9 @@ static int sunxi_nfc_hw_syndrome_ecc_read_page(struct mtd_info *mtd,
+ buf += ecc->size;
+ offset += ecc->size;
+
++ writel(readl(nfc->regs + NFC_REG_ECC_CTL) & ~NFC_RANDOM_EN,
++ nfc->regs + NFC_REG_ECC_CTL);
++
+ if (readl(nfc->regs + NFC_REG_ECC_ST) & 0x1) {
+ mtd->ecc_stats.failed++;
+ } else {
+@@ -739,7 +1108,8 @@ static int sunxi_nfc_hw_syndrome_ecc_read_page(struct mtd_info *mtd,
+
+ if (oob_required) {
+ chip->cmdfunc(mtd, NAND_CMD_RNDOUT, offset, -1);
+- chip->read_buf(mtd, oob, ecc->bytes + ecc->prepad);
++ nand_rnd_config(mtd, -1, offset, NAND_RND_READ);
++ nand_rnd_read_buf(mtd, oob, ecc->bytes + ecc->prepad);
+ oob += ecc->bytes + ecc->prepad;
+ }
+
+@@ -750,10 +1120,13 @@ static int sunxi_nfc_hw_syndrome_ecc_read_page(struct mtd_info *mtd,
+ cnt = mtd->oobsize - (oob - chip->oob_poi);
+ if (cnt > 0) {
+ chip->cmdfunc(mtd, NAND_CMD_RNDOUT, offset, -1);
+- chip->read_buf(mtd, oob, cnt);
++ nand_rnd_config(mtd, page, offset, NAND_RND_READ);
++ nand_rnd_read_buf(mtd, oob, cnt);
+ }
+ }
+
++ nand_rnd_config(mtd, -1, -1, NAND_RND_READ);
++
+ writel(readl(nfc->regs + NFC_REG_ECC_CTL) & ~NFC_ECC_EN,
+ nfc->regs + NFC_REG_ECC_CTL);
+
+@@ -768,6 +1141,7 @@ static int sunxi_nfc_hw_syndrome_ecc_write_page(struct mtd_info *mtd,
+ struct sunxi_nfc *nfc = to_sunxi_nfc(chip->controller);
+ struct nand_ecc_ctrl *ecc = chip->cur_ecc;
+ struct sunxi_nand_hw_ecc *data = ecc->priv;
++ struct sunxi_nand_hw_rnd *rnd = chip->cur_rnd->priv;
+ uint8_t *oob = chip->oob_poi;
+ int offset = 0;
+ int ret;
+@@ -783,7 +1157,8 @@ static int sunxi_nfc_hw_syndrome_ecc_write_page(struct mtd_info *mtd,
+ writel(tmp, nfc->regs + NFC_REG_ECC_CTL);
+
+ for (i = 0; i < ecc->steps; i++) {
+- chip->write_buf(mtd, buf + (i * ecc->size), ecc->size);
++ nand_rnd_config(mtd, -1, offset, NAND_RND_WRITE);
++ nand_rnd_write_buf(mtd, buf + (i * ecc->size), ecc->size);
+ offset += ecc->size;
+
+ /* Fill OOB data in */
+@@ -796,6 +1171,16 @@ static int sunxi_nfc_hw_syndrome_ecc_write_page(struct mtd_info *mtd,
+ 4);
+ }
+
++ cnt = ecc->bytes + 4;
++ if (rnd &&
++ nand_rnd_is_activ(mtd, rnd->page, offset, &cnt) > 0 &&
++ cnt == ecc->bytes + 4) {
++ tmp = readl(nfc->regs + NFC_REG_ECC_CTL);
++ tmp &= ~(NFC_RANDOM_DIRECTION | NFC_ECC_EXCEPTION);
++ tmp |= NFC_RANDOM_EN;
++ writel(tmp, nfc->regs + NFC_REG_ECC_CTL);
++ }
++
+ tmp = NFC_DATA_TRANS | NFC_DATA_SWAP_METHOD | NFC_ACCESS_DIR |
+ (1 << 30);
+ writel(tmp, nfc->regs + NFC_REG_CMD);
+@@ -804,6 +1189,9 @@ static int sunxi_nfc_hw_syndrome_ecc_write_page(struct mtd_info *mtd,
+ if (ret)
+ return ret;
+
++ writel(readl(nfc->regs + NFC_REG_ECC_CTL) & ~NFC_RANDOM_EN,
++ nfc->regs + NFC_REG_ECC_CTL);
++
+ offset += ecc->bytes + ecc->prepad;
+ oob += ecc->bytes + ecc->prepad;
+ }
+@@ -812,9 +1200,11 @@ static int sunxi_nfc_hw_syndrome_ecc_write_page(struct mtd_info *mtd,
+ cnt = mtd->oobsize - (oob - chip->oob_poi);
+ if (cnt > 0) {
+ chip->cmdfunc(mtd, NAND_CMD_RNDIN, offset, -1);
+- chip->write_buf(mtd, oob, cnt);
++ nand_rnd_config(mtd, -1, offset, NAND_RND_WRITE);
++ nand_rnd_write_buf(mtd, oob, cnt);
+ }
+ }
++ nand_rnd_config(mtd, -1, -1, NAND_RND_WRITE);
+
+ tmp = readl(nfc->regs + NFC_REG_ECC_CTL);
+ tmp &= ~NFC_ECC_EN;
+@@ -824,6 +1214,128 @@ static int sunxi_nfc_hw_syndrome_ecc_write_page(struct mtd_info *mtd,
+ return 0;
+ }
+
++static u16 sunxi_nfc_hw_syndrome_ecc_rnd_steps(struct mtd_info *mtd, u16 state,
++ int column, int *left)
++{
++ struct nand_chip *chip = mtd->priv;
++ struct nand_ecc_ctrl *ecc = chip->cur_ecc;
++ struct sunxi_nand_hw_rnd *rnd = chip->cur_rnd->priv;
++ int eccsteps = mtd->writesize / ecc->size;
++ int modsize = ecc->size + ecc->prepad + ecc->bytes;
++ int steps;
++
++ if (column < (eccsteps * modsize)) {
++ steps = column % modsize;
++ *left = modsize - steps;
++ if (steps >= ecc->size) {
++ steps -= ecc->size;
++ state = rnd->subseeds[rnd->page % rnd->nseeds];
++ }
++ } else {
++ steps = column % 4096;
++ *left = mtd->writesize + mtd->oobsize - column;
++ }
++
++ return sunxi_nfc_hwrnd_step(rnd, state, steps);
++}
++
++static u16 default_seeds[] = {0x4a80};
++
++static void sunxi_nand_rnd_ctrl_cleanup(struct nand_rnd_ctrl *rnd)
++{
++ struct sunxi_nand_hw_rnd *hwrnd = rnd->priv;
++
++ if (hwrnd->seeds != default_seeds)
++ kfree(hwrnd->seeds);
++ kfree(hwrnd->subseeds);
++ kfree(rnd->layout);
++ kfree(hwrnd);
++}
++
++static int sunxi_nand_rnd_ctrl_init(struct mtd_info *mtd,
++ struct nand_rnd_ctrl *rnd,
++ struct nand_ecc_ctrl *ecc,
++ struct device_node *np)
++{
++ struct sunxi_nand_hw_rnd *hwrnd;
++ struct nand_rnd_layout *layout = NULL;
++ int ret;
++
++ hwrnd = kzalloc(sizeof(*hwrnd), GFP_KERNEL);
++ if (!hwrnd)
++ return -ENOMEM;
++
++ hwrnd->seeds = default_seeds;
++ hwrnd->nseeds = ARRAY_SIZE(default_seeds);
++
++ if (of_get_property(np, "nand-randomizer-seeds", &ret)) {
++ hwrnd->nseeds = ret / sizeof(*hwrnd->seeds);
++ hwrnd->seeds = kzalloc(hwrnd->nseeds * sizeof(*hwrnd->seeds),
++ GFP_KERNEL);
++ if (!hwrnd->seeds) {
++ ret = -ENOMEM;
++ goto err;
++ }
++
++ ret = of_property_read_u16_array(np, "nand-randomizer-seeds",
++ hwrnd->seeds, hwrnd->nseeds);
++ if (ret)
++ goto err;
++ }
++
++ switch (ecc->mode) {
++ case NAND_ECC_HW_SYNDROME:
++ hwrnd->step = sunxi_nfc_hw_syndrome_ecc_rnd_steps;
++ break;
++
++ case NAND_ECC_HW:
++ hwrnd->step = sunxi_nfc_hw_ecc_rnd_steps;
++
++ default:
++ layout = kzalloc(sizeof(*layout) + sizeof(struct nand_rndfree),
++ GFP_KERNEL);
++ if (!layout) {
++ ret = -ENOMEM;
++ goto err;
++ }
++ layout->nranges = 1;
++ layout->ranges[0].offset = mtd->writesize;
++ layout->ranges[0].length = 2;
++ rnd->layout = layout;
++ break;
++ }
++
++ if (ecc->mode == NAND_ECC_HW_SYNDROME || ecc->mode == NAND_ECC_HW) {
++ int i;
++
++ hwrnd->subseeds = kzalloc(hwrnd->nseeds *
++ sizeof(*hwrnd->subseeds),
++ GFP_KERNEL);
++ if (!hwrnd->subseeds) {
++ ret = -ENOMEM;
++ goto err;
++ }
++
++ for (i = 0; i < hwrnd->nseeds; i++)
++ hwrnd->subseeds[i] = sunxi_nfc_hwrnd_step(hwrnd,
++ hwrnd->seeds[i],
++ ecc->size);
++ }
++
++ rnd->config = sunxi_nfc_hwrnd_config;
++ rnd->read_buf = sunxi_nfc_hwrnd_read_buf;
++ rnd->write_buf = sunxi_nfc_hwrnd_write_buf;
++ rnd->priv = hwrnd;
++
++ return 0;
++
++err:
++ kfree(hwrnd);
++ kfree(layout);
++
++ return ret;
++}
++
+ static int sunxi_nand_chip_set_timings(struct sunxi_nand_chip *chip,
+ const struct nand_sdr_timings *timings)
+ {
+@@ -1084,6 +1596,40 @@ static int sunxi_nand_hw_syndrome_ecc_ctrl_init(struct mtd_info *mtd,
+ return 0;
+ }
+
++static void sunxi_nand_rnd_cleanup(struct nand_rnd_ctrl *rnd)
++{
++ switch (rnd->mode) {
++ case NAND_RND_HW:
++ sunxi_nand_rnd_ctrl_cleanup(rnd);
++ break;
++ default:
++ break;
++ }
++}
++
++static int sunxi_nand_rnd_init(struct mtd_info *mtd,
++ struct nand_rnd_ctrl *rnd,
++ struct nand_ecc_ctrl *ecc,
++ struct device_node *np)
++{
++ int ret;
++
++ rnd->mode = NAND_RND_NONE;
++
++ ret = of_get_nand_rnd_mode(np);
++ if (ret >= 0)
++ rnd->mode = ret;
++
++ switch (rnd->mode) {
++ case NAND_RND_HW:
++ return sunxi_nand_rnd_ctrl_init(mtd, rnd, ecc, np);
++ default:
++ break;
++ }
++
++ return 0;
++}
++
+ static void sunxi_nand_ecc_cleanup(struct nand_ecc_ctrl *ecc)
+ {
+ switch (ecc->mode) {
+@@ -1175,7 +1721,14 @@ struct nand_part *sunxi_ofnandpart_parse(void *priv, struct mtd_info *master,
+ if (ret)
+ goto err;
+
++ ret = sunxi_nand_rnd_init(master, &part->rnd, &part->ecc, pp);
++ if (ret) {
++ sunxi_nand_ecc_cleanup(&part->ecc);
++ goto err;
++ }
++
+ part->part.ecc = &part->ecc;
++ part->part.rnd = &part->rnd;
+
+ return &part->part;
+
+@@ -1300,18 +1853,30 @@ static int sunxi_nand_chip_init(struct device *dev, struct sunxi_nfc *nfc,
+ if (ret)
+ return ret;
+
++ chip->buffer = kzalloc(mtd->writesize + mtd->oobsize, GFP_KERNEL);
++ if (!chip->buffer)
++ return -ENOMEM;
++
+ ret = sunxi_nand_chip_init_timings(chip, np);
+ if (ret) {
+ dev_err(dev, "could not configure chip timings: %d\n", ret);
+ return ret;
+ }
+
++ ret = nand_pst_create(mtd);
++ if (ret)
++ return ret;
++
+ ret = sunxi_nand_ecc_init(mtd, &nand->ecc, np);
+ if (ret) {
+ dev_err(dev, "ECC init failed: %d\n", ret);
+ return ret;
+ }
+
++ ret = sunxi_nand_rnd_init(mtd, &nand->rnd, &nand->ecc, np);
++ if (ret)
++ return ret;
++
+ ret = nand_scan_tail(mtd);
+ if (ret) {
+ dev_err(dev, "nand_scan_tail failed: %d\n", ret);
+@@ -1367,6 +1932,8 @@ static void sunxi_nand_chips_cleanup(struct sunxi_nfc *nfc)
+ node);
+ nand_release(&chip->mtd);
+ sunxi_nand_ecc_cleanup(&chip->nand.ecc);
++ sunxi_nand_rnd_cleanup(&chip->nand.rnd);
++ kfree(chip->buffer);
+ }
+ }
+
--- /dev/null
+From de994d9c849ca0ca020fccfa1916afcde7f313f2 Mon Sep 17 00:00:00 2001
+From: Boris BREZILLON <boris.brezillon@free-electrons.com>
+Date: Sun, 24 Aug 2014 10:40:44 +0200
+Subject: [PATCH] mtd: nand: sunxi: Fallback to chip config when partition
+ config is not available
+
+Fallback to chip config for partitions where ecc/rnd config are not
+specified in the device tree.
+
+Signed-off-by: Boris BREZILLON <boris.brezillon@free-electrons.com>
+Signed-off-by: Hans de Goede <hdegoede@redhat.com>
+---
+ drivers/mtd/nand/sunxi_nand.c | 27 ++++++++++++++++++---------
+ 1 file changed, 18 insertions(+), 9 deletions(-)
+
+diff --git a/drivers/mtd/nand/sunxi_nand.c b/drivers/mtd/nand/sunxi_nand.c
+index 2f6ab39..74f2caf 100644
+--- a/drivers/mtd/nand/sunxi_nand.c
++++ b/drivers/mtd/nand/sunxi_nand.c
+@@ -1711,28 +1711,37 @@ static void sunxi_nand_part_release(struct nand_part *part)
+ struct nand_part *sunxi_ofnandpart_parse(void *priv, struct mtd_info *master,
+ struct device_node *pp)
+ {
++ struct nand_chip *chip = master->priv;
+ struct sunxi_nand_part *part;
+ int ret;
+
+ part = kzalloc(sizeof(*part), GFP_KERNEL);
+ part->part.release = sunxi_nand_part_release;
+
+- ret = sunxi_nand_ecc_init(master, &part->ecc, pp);
+- if (ret)
+- goto err;
++ if (of_find_property(pp, "nand-ecc-mode", NULL)) {
++ ret = sunxi_nand_ecc_init(master, &part->ecc, pp);
++ if (ret)
++ goto err;
+
+- ret = sunxi_nand_rnd_init(master, &part->rnd, &part->ecc, pp);
+- if (ret) {
+- sunxi_nand_ecc_cleanup(&part->ecc);
+- goto err;
++ part->part.ecc = &part->ecc;
+ }
+
+- part->part.ecc = &part->ecc;
+- part->part.rnd = &part->rnd;
++ if (of_find_property(pp, "nand-rnd-mode", NULL)) {
++ ret = sunxi_nand_rnd_init(master, &part->rnd,
++ part->part.ecc ? part->part.ecc : &chip->ecc,
++ pp);
++ if (ret)
++ goto err;
++
++ part->part.rnd = &part->rnd;
++ }
+
+ return &part->part;
+
+ err:
++ if (part->part.ecc)
++ sunxi_nand_ecc_cleanup(part->part.ecc);
++
+ kfree(part);
+ return ERR_PTR(ret);
+ }
--- /dev/null
+From a5ba30016f4a29f5875112169a92a28a9ba7f5c9 Mon Sep 17 00:00:00 2001
+From: Hans de Goede <hdegoede@redhat.com>
+Date: Mon, 25 May 2015 11:59:03 +0200
+Subject: [PATCH] mtd: nand: sunxi: Add NAND_BBT_CREATE_EMPTY to bbt_options
+
+The ftl format used by the Allwinner Android kernels, with which most
+Allwinnner devices ship, overrides the factory bad block markers, and
+fills the oob data with a pattern which causes a lot of false bad block
+positives, so when we first create a bbt table, start with an empty one
+to avoid marking a ton of blocks as bad from the start.
+
+Signed-off-by: Hans de Goede <hdegoede@redhat.com>
+---
+ drivers/mtd/nand/sunxi_nand.c | 9 +++++++++
+ 1 file changed, 9 insertions(+)
+
+diff --git a/drivers/mtd/nand/sunxi_nand.c b/drivers/mtd/nand/sunxi_nand.c
+index 74f2caf..72ab770 100644
+--- a/drivers/mtd/nand/sunxi_nand.c
++++ b/drivers/mtd/nand/sunxi_nand.c
+@@ -1853,6 +1853,15 @@ static int sunxi_nand_chip_init(struct device *dev, struct sunxi_nfc *nfc,
+ if (of_get_nand_on_flash_bbt(np))
+ nand->bbt_options |= NAND_BBT_USE_FLASH | NAND_BBT_NO_OOB;
+
++ /*
++ * The ftl format used by the Allwinner Android kernels overrides
++ * the factory bad block markers, and fills the oob data with a
++ * pattern which causes a lot of false bad block positives, so
++ * when we first create a bbt table, start with an empty one
++ * to avoid marking a ton of blocks as bad from the start.
++ */
++ nand->bbt_options |= NAND_BBT_CREATE_EMPTY;
++
+ mtd = &chip->mtd;
+ mtd->dev.parent = dev;
+ mtd->priv = nand;
--- /dev/null
+From 00f9956384e3cf011e0d5ffd211847bf9336ec78 Mon Sep 17 00:00:00 2001
+From: Michal Suchanek <hramrach@gmail.com>
+Date: Tue, 26 May 2015 17:01:33 +0200
+Subject: [PATCH] ARM: dts: sun4i: Add NAND controller pin definitions
+
+Define the NAND controller pin configs.
+
+Signed-off-by: Michal Suchanek <hramrach@gmail.com>
+Signed-off-by: Hans de Goede <hdegoede@redhat.com>
+---
+ arch/arm/boot/dts/sun4i-a10.dtsi | 80 ++++++++++++++++++++++++++++++++++++++++
+ 1 file changed, 80 insertions(+)
+
+diff --git a/arch/arm/boot/dts/sun4i-a10.dtsi b/arch/arm/boot/dts/sun4i-a10.dtsi
+index abea24e..e0a737f 100644
+--- a/arch/arm/boot/dts/sun4i-a10.dtsi
++++ b/arch/arm/boot/dts/sun4i-a10.dtsi
+@@ -924,6 +924,86 @@
+ allwinner,drive = <SUN4I_PINCTRL_10_MA>;
+ allwinner,pull = <SUN4I_PINCTRL_NO_PULL>;
+ };
++
++ nand_pins_a: nand_base0@0 {
++ allwinner,pins = "PC0", "PC1", "PC2",
++ "PC5", "PC8", "PC9", "PC10",
++ "PC11", "PC12", "PC13", "PC14",
++ "PC15", "PC16";
++ allwinner,function = "nand0";
++ allwinner,drive = <0>;
++ allwinner,pull = <0>;
++ };
++
++ nand_cs0_pins_a: nand_cs@0 {
++ allwinner,pins = "PC4";
++ allwinner,function = "nand0";
++ allwinner,drive = <0>;
++ allwinner,pull = <0>;
++ };
++
++ nand_cs1_pins_a: nand_cs@1 {
++ allwinner,pins = "PC3";
++ allwinner,function = "nand0";
++ allwinner,drive = <0>;
++ allwinner,pull = <0>;
++ };
++
++ nand_cs2_pins_a: nand_cs@2 {
++ allwinner,pins = "PC17";
++ allwinner,function = "nand0";
++ allwinner,drive = <0>;
++ allwinner,pull = <0>;
++ };
++
++ nand_cs3_pins_a: nand_cs@3 {
++ allwinner,pins = "PC18";
++ allwinner,function = "nand0";
++ allwinner,drive = <0>;
++ allwinner,pull = <0>;
++ };
++
++ nand_cs4_pins_a: nand_cs@4 {
++ allwinner,pins = "PC19";
++ allwinner,function = "nand0";
++ allwinner,drive = <0>;
++ allwinner,pull = <0>;
++ };
++
++ nand_cs5_pins_a: nand_cs@5 {
++ allwinner,pins = "PC20";
++ allwinner,function = "nand0";
++ allwinner,drive = <0>;
++ allwinner,pull = <0>;
++ };
++
++ nand_cs6_pins_a: nand_cs@6 {
++ allwinner,pins = "PC21";
++ allwinner,function = "nand0";
++ allwinner,drive = <0>;
++ allwinner,pull = <0>;
++ };
++
++ nand_cs7_pins_a: nand_cs@7 {
++ allwinner,pins = "PC22";
++ allwinner,function = "nand0";
++ allwinner,drive = <0>;
++ allwinner,pull = <0>;
++ };
++
++ nand_rb0_pins_a: nand_rb@0 {
++ allwinner,pins = "PC6";
++ allwinner,function = "nand0";
++ allwinner,drive = <0>;
++ allwinner,pull = <0>;
++ };
++
++ nand_rb1_pins_a: nand_rb@1 {
++ allwinner,pins = "PC7";
++ allwinner,function = "nand0";
++ allwinner,drive = <0>;
++ allwinner,pull = <0>;
++ };
+ };
+
+ timer@01c20c00 {
--- /dev/null
+From a8ad7637cec0c2c2b1322d78b142beea4621dd23 Mon Sep 17 00:00:00 2001
+From: Hans de Goede <hdegoede@redhat.com>
+Date: Tue, 26 May 2015 17:18:26 +0200
+Subject: [PATCH] ARM: dts: sun5i: Add NAND controller pin definitions
+
+Define the NAND controller pin configs.
+
+Signed-off-by: Hans de Goede <hdegoede@redhat.com>
+---
+ arch/arm/boot/dts/sun5i-a10s.dtsi | 14 ++++++++++++++
+ arch/arm/boot/dts/sun5i.dtsi | 38 ++++++++++++++++++++++++++++++++++++++
+ 2 files changed, 52 insertions(+)
+
+diff --git a/arch/arm/boot/dts/sun5i-a10s.dtsi b/arch/arm/boot/dts/sun5i-a10s.dtsi
+index f11efb7..1962ec9 100644
+--- a/arch/arm/boot/dts/sun5i-a10s.dtsi
++++ b/arch/arm/boot/dts/sun5i-a10s.dtsi
+@@ -201,6 +201,20 @@
+ allwinner,drive = <SUN4I_PINCTRL_30_MA>;
+ allwinner,pull = <SUN4I_PINCTRL_NO_PULL>;
+ };
++
++ nand_cs2_pins_a: nand_cs@2 {
++ allwinner,pins = "PC17";
++ allwinner,function = "nand0";
++ allwinner,drive = <0>;
++ allwinner,pull = <0>;
++ };
++
++ nand_cs3_pins_a: nand_cs@3 {
++ allwinner,pins = "PC18";
++ allwinner,function = "nand0";
++ allwinner,drive = <0>;
++ allwinner,pull = <0>;
++ };
+ };
+
+ &sram_a {
+diff --git a/arch/arm/boot/dts/sun5i-a13.dtsi b/arch/arm/boot/dts/sun5i-a13.dtsi
+index 772f8d8..0dc7c96 100644
+--- a/arch/arm/boot/dts/sun5i-a13.dtsi
++++ b/arch/arm/boot/dts/sun5i-a13.dtsi
+@@ -544,6 +544,44 @@
+ allwinner,drive = <SUN4I_PINCTRL_30_MA>;
+ allwinner,pull = <SUN4I_PINCTRL_PULL_UP>;
+ };
++
++ nand_pins_a: nand_base0@0 {
++ allwinner,pins = "PC0", "PC1", "PC2",
++ "PC5", "PC8", "PC9", "PC10",
++ "PC11", "PC12", "PC13", "PC14",
++ "PC15";
++ allwinner,function = "nand0";
++ allwinner,drive = <0>;
++ allwinner,pull = <0>;
++ };
++
++ nand_cs0_pins_a: nand_cs@0 {
++ allwinner,pins = "PC4";
++ allwinner,function = "nand0";
++ allwinner,drive = <0>;
++ allwinner,pull = <0>;
++ };
++
++ nand_cs1_pins_a: nand_cs@1 {
++ allwinner,pins = "PC3";
++ allwinner,function = "nand0";
++ allwinner,drive = <0>;
++ allwinner,pull = <0>;
++ };
++
++ nand_rb0_pins_a: nand_rb@0 {
++ allwinner,pins = "PC6";
++ allwinner,function = "nand0";
++ allwinner,drive = <0>;
++ allwinner,pull = <0>;
++ };
++
++ nand_rb1_pins_a: nand_rb@1 {
++ allwinner,pins = "PC7";
++ allwinner,function = "nand0";
++ allwinner,drive = <0>;
++ allwinner,pull = <0>;
++ };
+ };
+
+ timer@01c20c00 {
--- /dev/null
+From 576701449b01fb0dfaa76bb71f2b94ab5194c1dc Mon Sep 17 00:00:00 2001
+From: Boris BREZILLON <boris.brezillon@free-electrons.com>
+Date: Mon, 28 Jul 2014 14:08:15 +0200
+Subject: [PATCH] ARM: dts: sun7i: Add NAND controller pin definitions
+
+Define the NAND controller pin configs.
+
+Signed-off-by: Boris BREZILLON <boris.brezillon@free-electrons.com>
+Signed-off-by: Hans de Goede <hdegoede@redhat.com>
+---
+ arch/arm/boot/dts/sun7i-a20.dtsi | 80 ++++++++++++++++++++++++++++++++++++++++
+ 1 file changed, 80 insertions(+)
+
+diff --git a/arch/arm/boot/dts/sun7i-a20.dtsi b/arch/arm/boot/dts/sun7i-a20.dtsi
+index 0d7e600..6ec86c9 100644
+--- a/arch/arm/boot/dts/sun7i-a20.dtsi
++++ b/arch/arm/boot/dts/sun7i-a20.dtsi
+@@ -1164,6 +1164,86 @@
+ allwinner,drive = <SUN4I_PINCTRL_10_MA>;
+ allwinner,pull = <SUN4I_PINCTRL_NO_PULL>;
+ };
++
++ nand_pins_a: nand_base0@0 {
++ allwinner,pins = "PC0", "PC1", "PC2",
++ "PC5", "PC8", "PC9", "PC10",
++ "PC11", "PC12", "PC13", "PC14",
++ "PC15", "PC16";
++ allwinner,function = "nand0";
++ allwinner,drive = <0>;
++ allwinner,pull = <0>;
++ };
++
++ nand_cs0_pins_a: nand_cs@0 {
++ allwinner,pins = "PC4";
++ allwinner,function = "nand0";
++ allwinner,drive = <0>;
++ allwinner,pull = <0>;
++ };
++
++ nand_cs1_pins_a: nand_cs@1 {
++ allwinner,pins = "PC3";
++ allwinner,function = "nand0";
++ allwinner,drive = <0>;
++ allwinner,pull = <0>;
++ };
++
++ nand_cs2_pins_a: nand_cs@2 {
++ allwinner,pins = "PC17";
++ allwinner,function = "nand0";
++ allwinner,drive = <0>;
++ allwinner,pull = <0>;
++ };
++
++ nand_cs3_pins_a: nand_cs@3 {
++ allwinner,pins = "PC18";
++ allwinner,function = "nand0";
++ allwinner,drive = <0>;
++ allwinner,pull = <0>;
++ };
++
++ nand_cs4_pins_a: nand_cs@4 {
++ allwinner,pins = "PC19";
++ allwinner,function = "nand0";
++ allwinner,drive = <0>;
++ allwinner,pull = <0>;
++ };
++
++ nand_cs5_pins_a: nand_cs@5 {
++ allwinner,pins = "PC20";
++ allwinner,function = "nand0";
++ allwinner,drive = <0>;
++ allwinner,pull = <0>;
++ };
++
++ nand_cs6_pins_a: nand_cs@6 {
++ allwinner,pins = "PC21";
++ allwinner,function = "nand0";
++ allwinner,drive = <0>;
++ allwinner,pull = <0>;
++ };
++
++ nand_cs7_pins_a: nand_cs@7 {
++ allwinner,pins = "PC22";
++ allwinner,function = "nand0";
++ allwinner,drive = <0>;
++ allwinner,pull = <0>;
++ };
++
++ nand_rb0_pins_a: nand_rb@0 {
++ allwinner,pins = "PC6";
++ allwinner,function = "nand0";
++ allwinner,drive = <0>;
++ allwinner,pull = <0>;
++ };
++
++ nand_rb1_pins_a: nand_rb@1 {
++ allwinner,pins = "PC7";
++ allwinner,function = "nand0";
++ allwinner,drive = <0>;
++ allwinner,pull = <0>;
++ };
+ };
+
+ timer@01c20c00 {
--- /dev/null
+From 9cc66234a20c6ba1611233a122f04f3b175ad2d3 Mon Sep 17 00:00:00 2001
+From: Boris BREZILLON <boris.brezillon@free-electrons.com>
+Date: Mon, 28 Jul 2014 14:01:22 +0200
+Subject: [PATCH] ARM: dts: sun7i: Add NFC node to Allwinner A20 SoC
+
+Add NAND Flash controller node definition to the A20 SoC.
+
+Signed-off-by: Boris BREZILLON <boris.brezillon@free-electrons.com>
+Signed-off-by: Hans de Goede <hdegoede@redhat.com>
+---
+ arch/arm/boot/dts/sun7i-a20.dtsi | 11 +++++++++++
+ 1 file changed, 11 insertions(+)
+
+diff --git a/arch/arm/boot/dts/sun7i-a20.dtsi b/arch/arm/boot/dts/sun7i-a20.dtsi
+index 6ec86c9..092adc6 100644
+--- a/arch/arm/boot/dts/sun7i-a20.dtsi
++++ b/arch/arm/boot/dts/sun7i-a20.dtsi
+@@ -641,6 +641,17 @@
+ #dma-cells = <2>;
+ };
+
++ nfc: nand@01c03000 {
++ compatible = "allwinner,sun4i-a10-nand";
++ reg = <0x01c03000 0x1000>;
++ interrupts = <0 37 4>;
++ clocks = <&ahb_gates 13>, <&nand_clk>;
++ clock-names = "ahb", "mod";
++ #address-cells = <1>;
++ #size-cells = <0>;
++ status = "disabled";
++ };
++
+ spi0: spi@01c05000 {
+ compatible = "allwinner,sun4i-a10-spi";
+ reg = <0x01c05000 0x1000>;
--- /dev/null
+From a5bbf2ee4ca1479e4488399a45336e003e09647f Mon Sep 17 00:00:00 2001
+From: Michal Suchanek <hramrach@gmail.com>
+Date: Tue, 26 May 2015 17:03:41 +0200
+Subject: [PATCH] ARM: dts: sun4i: Add NFC node to Allwinner A10 SoC
+
+Add NAND Flash controller node definition to the A10 SoC.
+
+Signed-off-by: Michal Suchanek <hramrach@gmail.com>
+Signed-off-by: Hans de Goede <hdegoede@redhat.com>
+---
+ arch/arm/boot/dts/sun4i-a10.dtsi | 11 +++++++++++
+ 1 file changed, 11 insertions(+)
+
+diff --git a/arch/arm/boot/dts/sun4i-a10.dtsi b/arch/arm/boot/dts/sun4i-a10.dtsi
+index e0a737f..7cd636d 100644
+--- a/arch/arm/boot/dts/sun4i-a10.dtsi
++++ b/arch/arm/boot/dts/sun4i-a10.dtsi
+@@ -514,6 +514,17 @@
+ #dma-cells = <2>;
+ };
+
++ nfc: nand@01c03000 {
++ compatible = "allwinner,sun4i-a10-nand";
++ reg = <0x01c03000 0x1000>;
++ interrupts = <37>;
++ clocks = <&ahb_gates 13>, <&nand_clk>;
++ clock-names = "ahb", "mod";
++ #address-cells = <1>;
++ #size-cells = <0>;
++ status = "disabled";
++ };
++
+ spi0: spi@01c05000 {
+ compatible = "allwinner,sun4i-a10-spi";
+ reg = <0x01c05000 0x1000>;
--- /dev/null
+From 22ef77b0ba8fa347fe4b8c4c05d0bf0d08f4c141 Mon Sep 17 00:00:00 2001
+From: Hans de Goede <hdegoede@redhat.com>
+Date: Tue, 26 May 2015 18:01:50 +0200
+Subject: [PATCH] ARM: dts: sun5i: Add NFC node to Allwinner A13/A10s SoC
+
+Add NAND Flash controller node definition to the A13/a10s SoC.
+
+Signed-off-by: Hans de Goede <hdegoede@redhat.com>
+---
+ arch/arm/boot/dts/sun5i.dtsi | 11 +++++++++++
+ 1 file changed, 11 insertions(+)
+
+diff --git a/arch/arm/boot/dts/sun5i-a13.dtsi b/arch/arm/boot/dts/sun5i-a13.dtsi
+index 0dc7c96..801ab01 100644
+--- a/arch/arm/boot/dts/sun5i-a13.dtsi
++++ b/arch/arm/boot/dts/sun5i-a13.dtsi
+@@ -353,6 +353,17 @@
+ #dma-cells = <2>;
+ };
+
++ nfc: nand@01c03000 {
++ compatible = "allwinner,sun4i-a10-nand";
++ reg = <0x01c03000 0x1000>;
++ interrupts = <37>;
++ clocks = <&ahb_gates 13>, <&nand_clk>;
++ clock-names = "ahb", "mod";
++ #address-cells = <1>;
++ #size-cells = <0>;
++ status = "disabled";
++ };
++
+ spi0: spi@01c05000 {
+ compatible = "allwinner,sun4i-a10-spi";
+ reg = <0x01c05000 0x1000>;
--- /dev/null
+From f84e215756932c495bc92c50d40d8cd6773822bb Mon Sep 17 00:00:00 2001
+From: Hans de Goede <hdegoede@redhat.com>
+Date: Tue, 26 May 2015 21:06:22 +0200
+Subject: [PATCH] ARM: dts: sun5i: Enable NAND on A13 OLinuxIno board
+
+Add a node describing the NAND controller and partitions.
+
+Signed-off-by: Hans de Goede <hdegoede@redhat.com>
+---
+ arch/arm/boot/dts/sun5i-a13-olinuxino.dts | 59 +++++++++++++++++++++++++++++++
+ 1 file changed, 59 insertions(+)
+
+diff --git a/arch/arm/boot/dts/sun5i-a13-olinuxino.dts b/arch/arm/boot/dts/sun5i-a13-olinuxino.dts
+index b3c234c..fd1e921 100644
+--- a/arch/arm/boot/dts/sun5i-a13-olinuxino.dts
++++ b/arch/arm/boot/dts/sun5i-a13-olinuxino.dts
+@@ -155,3 +155,62 @@
+ status = "okay";
+ };
+ };
++&nfc {
++ pinctrl-names = "default";
++ pinctrl-0 = <&nand_pins_a &nand_cs0_pins_a &nand_rb0_pins_a>;
++ status = "okay";
++
++ nand@0 {
++ #address-cells = <2>;
++ #size-cells = <2>;
++ reg = <0>;
++ allwinner,rb = <0>;
++
++ nand-ecc-mode = "hw";
++ nand-rnd-mode = "hw";
++ nand-ecc-strength = <40>;
++ nand-ecc-step-size = <1024>;
++ nand-on-flash-bbt;
++
++ boot0@0 {
++ label = "boot0";
++ reg = /bits/ 64 <0x0 0x200000>;
++ nand-ecc-mode = "hw_syndrome";
++ nand-rnd-mode = "hw";
++ nand-randomizer-seeds = /bits/ 16 <0x4a80>;
++ };
++
++ boot0-rescue@200000 {
++ label = "boot0-rescue";
++ reg = /bits/ 64 <0x200000 0x200000>;
++ nand-ecc-mode = "hw_syndrome";
++ nand-rnd-mode = "hw";
++ nand-randomizer-seeds = /bits/ 16 <0x4a80>;
++ };
++
++ main@200000 {
++ label = "main";
++ reg = /bits/ 64 <0x400000 0xffc00000>;
++ nand-ecc-mode = "hw";
++ nand-rnd-mode = "hw";
++ nand-randomizer-seeds = /bits/ 16 <
++ 0x2b75 0x0bd0 0x5ca3 0x62d1 0x1c93 0x07e9 0x2162 0x3a72
++ 0x0d67 0x67f9 0x1be7 0x077d 0x032f 0x0dac 0x2716 0x2436
++ 0x7922 0x1510 0x3860 0x5287 0x480f 0x4252 0x1789 0x5a2d
++ 0x2a49 0x5e10 0x437f 0x4b4e 0x2f45 0x216e 0x5cb7 0x7130
++ 0x2a3f 0x60e4 0x4dc9 0x0ef0 0x0f52 0x1bb9 0x6211 0x7a56
++ 0x226d 0x4ea7 0x6f36 0x3692 0x38bf 0x0c62 0x05eb 0x4c55
++ 0x60f4 0x728c 0x3b6f 0x2037 0x7f69 0x0936 0x651a 0x4ceb
++ 0x6218 0x79f3 0x383f 0x18d9 0x4f05 0x5c82 0x2912 0x6f17
++ 0x6856 0x5938 0x1007 0x61ab 0x3e7f 0x57c2 0x542f 0x4f62
++ 0x7454 0x2eac 0x7739 0x42d4 0x2f90 0x435a 0x2e52 0x2064
++ 0x637c 0x66ad 0x2c90 0x0bad 0x759c 0x0029 0x0986 0x7126
++ 0x1ca7 0x1605 0x386a 0x27f5 0x1380 0x6d75 0x24c3 0x0f8e
++ 0x2b7a 0x1418 0x1fd1 0x7dc1 0x2d8e 0x43af 0x2267 0x7da3
++ 0x4e3d 0x1338 0x50db 0x454d 0x764d 0x40a3 0x42e6 0x262b
++ 0x2d2e 0x1aea 0x2e17 0x173d 0x3a6e 0x71bf 0x25f9 0x0a5d
++ 0x7c57 0x0fbe 0x46ce 0x4939 0x6b17 0x37bb 0x3e91 0x76db>;
++ };
++ };
++};
++
--- /dev/null
+diff --git a/arch/arm/boot/dts/sun7i-a20-olinuxino-micro.dts b/arch/arm/boot/dts/sun7i-a20-olinuxino-micro.dts
+index 39a51d5..f35957d 100644
+--- a/arch/arm/boot/dts/sun7i-a20-olinuxino-micro.dts
++++ b/arch/arm/boot/dts/sun7i-a20-olinuxino-micro.dts
+@@ -142,3 +142,60 @@
+ status = "okay";
+ };
+ };
++&nfc {
++ pinctrl-names = "default";
++ pinctrl-0 = <&nand_pins_a>, <&nand_cs0_pins_a>, <&nand_rb0_pins_a>;
++ status = "okay";
++
++ nand@0 {
++ #address-cells = <2>;
++ #size-cells = <2>;
++ reg = <0>;
++ allwinner,rb = <0>;
++
++ nand-ecc-mode = "hw";
++ nand-rnd-mode = "hw";
++ nand-on-flash-bbt;
++
++ boot0@0 {
++ label = "boot0";
++ reg = /bits/ 64 <0x0 0x200000>;
++ nand-ecc-mode = "hw_syndrome";
++ nand-rnd-mode = "hw";
++ nand-randomizer-seeds = /bits/ 16 <0x4a80>;
++ };
++
++ boot0-rescue@200000 {
++ label = "boot0-rescue";
++ reg = /bits/ 64 <0x200000 0x200000>;
++ nand-ecc-mode = "hw_syndrome";
++ nand-rnd-mode = "hw";
++ nand-randomizer-seeds = /bits/ 16 <0x4a80>;
++ };
++
++ main@200000 {
++ label = "main";
++ reg = /bits/ 64 <0x400000 0xffc00000>;
++ nand-ecc-mode = "hw";
++ nand-rnd-mode = "hw";
++ nand-randomizer-seeds = /bits/ 16 <
++ 0x2b75 0x0bd0 0x5ca3 0x62d1 0x1c93 0x07e9 0x2162 0x3a72
++ 0x0d67 0x67f9 0x1be7 0x077d 0x032f 0x0dac 0x2716 0x2436
++ 0x7922 0x1510 0x3860 0x5287 0x480f 0x4252 0x1789 0x5a2d
++ 0x2a49 0x5e10 0x437f 0x4b4e 0x2f45 0x216e 0x5cb7 0x7130
++ 0x2a3f 0x60e4 0x4dc9 0x0ef0 0x0f52 0x1bb9 0x6211 0x7a56
++ 0x226d 0x4ea7 0x6f36 0x3692 0x38bf 0x0c62 0x05eb 0x4c55
++ 0x60f4 0x728c 0x3b6f 0x2037 0x7f69 0x0936 0x651a 0x4ceb
++ 0x6218 0x79f3 0x383f 0x18d9 0x4f05 0x5c82 0x2912 0x6f17
++ 0x6856 0x5938 0x1007 0x61ab 0x3e7f 0x57c2 0x542f 0x4f62
++ 0x7454 0x2eac 0x7739 0x42d4 0x2f90 0x435a 0x2e52 0x2064
++ 0x637c 0x66ad 0x2c90 0x0bad 0x759c 0x0029 0x0986 0x7126
++ 0x1ca7 0x1605 0x386a 0x27f5 0x1380 0x6d75 0x24c3 0x0f8e
++ 0x2b7a 0x1418 0x1fd1 0x7dc1 0x2d8e 0x43af 0x2267 0x7da3
++ 0x4e3d 0x1338 0x50db 0x454d 0x764d 0x40a3 0x42e6 0x262b
++ 0x2d2e 0x1aea 0x2e17 0x173d 0x3a6e 0x71bf 0x25f9 0x0a5d
++ 0x7c57 0x0fbe 0x46ce 0x4939 0x6b17 0x37bb 0x3e91 0x76db>;
++ };
++ };
++};
++
--- /dev/null
+From e9f0391c7fccd13dfc07b470775b417d18d7df3b Mon Sep 17 00:00:00 2001
+From: Michal Suchanek <hramrach@gmail.com>
+Date: Fri, 12 Dec 2014 19:19:12 +0100
+Subject: [PATCH] ARM: dts: sun4i: Enable NAND on cubieboard
+
+Add a node describing the NAND controller and partitions.
+
+Signed-off-by: Michal Suchanek <hramrach@gmail.com>
+Signed-off-by: Hans de Goede <hdegoede@redhat.com>
+---
+ arch/arm/boot/dts/sun4i-a10-cubieboard.dts | 57 ++++++++++++++++++++++++++++++
+ 1 file changed, 57 insertions(+)
+
+diff --git a/arch/arm/boot/dts/sun4i-a10-cubieboard.dts b/arch/arm/boot/dts/sun4i-a10-cubieboard.dts
+index 046a84d..a6faca3 100644
+--- a/arch/arm/boot/dts/sun4i-a10-cubieboard.dts
++++ b/arch/arm/boot/dts/sun4i-a10-cubieboard.dts
+@@ -147,3 +147,60 @@
+ regulator-max-microvolt = <3000000>;
+ regulator-name = "avcc";
+ };
++&nfc {
++ pinctrl-names = "default";
++ pinctrl-0 = <&nand_pins_a &nand_cs0_pins_a &nand_rb0_pins_a>;
++ status = "okay";
++
++ nand@0 {
++ #address-cells = <2>;
++ #size-cells = <2>;
++ reg = <0>;
++ allwinner,rb = <0>;
++
++ nand-ecc-mode = "hw";
++ nand-rnd-mode = "hw";
++ nand-on-flash-bbt;
++
++ boot0@0 {
++ label = "boot0";
++ reg = /bits/ 64 <0x0 0x200000>;
++ nand-ecc-mode = "hw_syndrome";
++ nand-rnd-mode = "hw";
++ nand-randomizer-seeds = /bits/ 16 <0x4a80>;
++ };
++
++ boot0-rescue@200000 {
++ label = "boot0-rescue";
++ reg = /bits/ 64 <0x200000 0x200000>;
++ nand-ecc-mode = "hw_syndrome";
++ nand-rnd-mode = "hw";
++ nand-randomizer-seeds = /bits/ 16 <0x4a80>;
++ };
++
++ main@200000 {
++ label = "main";
++ reg = /bits/ 64 <0x400000 0xffc00000>;
++ nand-ecc-mode = "hw";
++ nand-rnd-mode = "hw";
++ nand-randomizer-seeds = /bits/ 16 <
++ 0x2b75 0x0bd0 0x5ca3 0x62d1 0x1c93 0x07e9 0x2162 0x3a72
++ 0x0d67 0x67f9 0x1be7 0x077d 0x032f 0x0dac 0x2716 0x2436
++ 0x7922 0x1510 0x3860 0x5287 0x480f 0x4252 0x1789 0x5a2d
++ 0x2a49 0x5e10 0x437f 0x4b4e 0x2f45 0x216e 0x5cb7 0x7130
++ 0x2a3f 0x60e4 0x4dc9 0x0ef0 0x0f52 0x1bb9 0x6211 0x7a56
++ 0x226d 0x4ea7 0x6f36 0x3692 0x38bf 0x0c62 0x05eb 0x4c55
++ 0x60f4 0x728c 0x3b6f 0x2037 0x7f69 0x0936 0x651a 0x4ceb
++ 0x6218 0x79f3 0x383f 0x18d9 0x4f05 0x5c82 0x2912 0x6f17
++ 0x6856 0x5938 0x1007 0x61ab 0x3e7f 0x57c2 0x542f 0x4f62
++ 0x7454 0x2eac 0x7739 0x42d4 0x2f90 0x435a 0x2e52 0x2064
++ 0x637c 0x66ad 0x2c90 0x0bad 0x759c 0x0029 0x0986 0x7126
++ 0x1ca7 0x1605 0x386a 0x27f5 0x1380 0x6d75 0x24c3 0x0f8e
++ 0x2b7a 0x1418 0x1fd1 0x7dc1 0x2d8e 0x43af 0x2267 0x7da3
++ 0x4e3d 0x1338 0x50db 0x454d 0x764d 0x40a3 0x42e6 0x262b
++ 0x2d2e 0x1aea 0x2e17 0x173d 0x3a6e 0x71bf 0x25f9 0x0a5d
++ 0x7c57 0x0fbe 0x46ce 0x4939 0x6b17 0x37bb 0x3e91 0x76db>;
++ };
++ };
++};
++
--- /dev/null
+diff --git a/arch/arm/boot/dts/sun4i-a10-olinuxino-lime.dts b/arch/arm/boot/dts/sun4i-a10-olinuxino-lime.dts
+index b3c234c..fd1e921 100644
+--- a/arch/arm/boot/dts/sun4i-a10-olinuxino-lime.dts
++++ b/arch/arm/boot/dts/sun4i-a10-olinuxino-lime.dts
+@@ -155,3 +155,62 @@
+ status = "okay";
+ };
+ };
++&nfc {
++ pinctrl-names = "default";
++ pinctrl-0 = <&nand_pins_a &nand_cs0_pins_a &nand_rb0_pins_a>;
++ status = "okay";
++
++ nand@0 {
++ #address-cells = <2>;
++ #size-cells = <2>;
++ reg = <0>;
++ allwinner,rb = <0>;
++
++ nand-ecc-mode = "hw";
++ nand-rnd-mode = "hw";
++ nand-ecc-strength = <40>;
++ nand-ecc-step-size = <1024>;
++ nand-on-flash-bbt;
++
++ boot0@0 {
++ label = "boot0";
++ reg = /bits/ 64 <0x0 0x200000>;
++ nand-ecc-mode = "hw_syndrome";
++ nand-rnd-mode = "hw";
++ nand-randomizer-seeds = /bits/ 16 <0x4a80>;
++ };
++
++ boot0-rescue@200000 {
++ label = "boot0-rescue";
++ reg = /bits/ 64 <0x200000 0x200000>;
++ nand-ecc-mode = "hw_syndrome";
++ nand-rnd-mode = "hw";
++ nand-randomizer-seeds = /bits/ 16 <0x4a80>;
++ };
++
++ main@200000 {
++ label = "main";
++ reg = /bits/ 64 <0x400000 0xffc00000>;
++ nand-ecc-mode = "hw";
++ nand-rnd-mode = "hw";
++ nand-randomizer-seeds = /bits/ 16 <
++ 0x2b75 0x0bd0 0x5ca3 0x62d1 0x1c93 0x07e9 0x2162 0x3a72
++ 0x0d67 0x67f9 0x1be7 0x077d 0x032f 0x0dac 0x2716 0x2436
++ 0x7922 0x1510 0x3860 0x5287 0x480f 0x4252 0x1789 0x5a2d
++ 0x2a49 0x5e10 0x437f 0x4b4e 0x2f45 0x216e 0x5cb7 0x7130
++ 0x2a3f 0x60e4 0x4dc9 0x0ef0 0x0f52 0x1bb9 0x6211 0x7a56
++ 0x226d 0x4ea7 0x6f36 0x3692 0x38bf 0x0c62 0x05eb 0x4c55
++ 0x60f4 0x728c 0x3b6f 0x2037 0x7f69 0x0936 0x651a 0x4ceb
++ 0x6218 0x79f3 0x383f 0x18d9 0x4f05 0x5c82 0x2912 0x6f17
++ 0x6856 0x5938 0x1007 0x61ab 0x3e7f 0x57c2 0x542f 0x4f62
++ 0x7454 0x2eac 0x7739 0x42d4 0x2f90 0x435a 0x2e52 0x2064
++ 0x637c 0x66ad 0x2c90 0x0bad 0x759c 0x0029 0x0986 0x7126
++ 0x1ca7 0x1605 0x386a 0x27f5 0x1380 0x6d75 0x24c3 0x0f8e
++ 0x2b7a 0x1418 0x1fd1 0x7dc1 0x2d8e 0x43af 0x2267 0x7da3
++ 0x4e3d 0x1338 0x50db 0x454d 0x764d 0x40a3 0x42e6 0x262b
++ 0x2d2e 0x1aea 0x2e17 0x173d 0x3a6e 0x71bf 0x25f9 0x0a5d
++ 0x7c57 0x0fbe 0x46ce 0x4939 0x6b17 0x37bb 0x3e91 0x76db>;
++ };
++ };
++};
++
--- /dev/null
+diff --git a/arch/arm/boot/dts/sun4i-a10-pcduino.dts b/arch/arm/boot/dts/sun4i-a10-pcduino.dts
+index b3c234c..fd1e921 100644
+--- a/arch/arm/boot/dts/sun4i-a10-pcduino.dts
++++ b/arch/arm/boot/dts/sun4i-a10-pcduino.dts
+@@ -155,3 +155,62 @@
+ status = "okay";
+ };
+ };
++&nfc {
++ pinctrl-names = "default";
++ pinctrl-0 = <&nand_pins_a &nand_cs0_pins_a &nand_rb0_pins_a>;
++ status = "okay";
++
++ nand@0 {
++ #address-cells = <2>;
++ #size-cells = <2>;
++ reg = <0>;
++ allwinner,rb = <0>;
++
++ nand-ecc-mode = "hw";
++ nand-rnd-mode = "hw";
++ nand-ecc-strength = <40>;
++ nand-ecc-step-size = <1024>;
++ nand-on-flash-bbt;
++
++ boot0@0 {
++ label = "boot0";
++ reg = /bits/ 64 <0x0 0x200000>;
++ nand-ecc-mode = "hw_syndrome";
++ nand-rnd-mode = "hw";
++ nand-randomizer-seeds = /bits/ 16 <0x4a80>;
++ };
++
++ boot0-rescue@200000 {
++ label = "boot0-rescue";
++ reg = /bits/ 64 <0x200000 0x200000>;
++ nand-ecc-mode = "hw_syndrome";
++ nand-rnd-mode = "hw";
++ nand-randomizer-seeds = /bits/ 16 <0x4a80>;
++ };
++
++ main@200000 {
++ label = "main";
++ reg = /bits/ 64 <0x400000 0xffc00000>;
++ nand-ecc-mode = "hw";
++ nand-rnd-mode = "hw";
++ nand-randomizer-seeds = /bits/ 16 <
++ 0x2b75 0x0bd0 0x5ca3 0x62d1 0x1c93 0x07e9 0x2162 0x3a72
++ 0x0d67 0x67f9 0x1be7 0x077d 0x032f 0x0dac 0x2716 0x2436
++ 0x7922 0x1510 0x3860 0x5287 0x480f 0x4252 0x1789 0x5a2d
++ 0x2a49 0x5e10 0x437f 0x4b4e 0x2f45 0x216e 0x5cb7 0x7130
++ 0x2a3f 0x60e4 0x4dc9 0x0ef0 0x0f52 0x1bb9 0x6211 0x7a56
++ 0x226d 0x4ea7 0x6f36 0x3692 0x38bf 0x0c62 0x05eb 0x4c55
++ 0x60f4 0x728c 0x3b6f 0x2037 0x7f69 0x0936 0x651a 0x4ceb
++ 0x6218 0x79f3 0x383f 0x18d9 0x4f05 0x5c82 0x2912 0x6f17
++ 0x6856 0x5938 0x1007 0x61ab 0x3e7f 0x57c2 0x542f 0x4f62
++ 0x7454 0x2eac 0x7739 0x42d4 0x2f90 0x435a 0x2e52 0x2064
++ 0x637c 0x66ad 0x2c90 0x0bad 0x759c 0x0029 0x0986 0x7126
++ 0x1ca7 0x1605 0x386a 0x27f5 0x1380 0x6d75 0x24c3 0x0f8e
++ 0x2b7a 0x1418 0x1fd1 0x7dc1 0x2d8e 0x43af 0x2267 0x7da3
++ 0x4e3d 0x1338 0x50db 0x454d 0x764d 0x40a3 0x42e6 0x262b
++ 0x2d2e 0x1aea 0x2e17 0x173d 0x3a6e 0x71bf 0x25f9 0x0a5d
++ 0x7c57 0x0fbe 0x46ce 0x4939 0x6b17 0x37bb 0x3e91 0x76db>;
++ };
++ };
++};
++
--- /dev/null
+diff --git a/arch/arm/boot/dts/sun7i-a20-pcduino3.dts b/arch/arm/boot/dts/sun7i-a20-pcduino3.dts
+index b3c234c..fd1e921 100644
+--- a/arch/arm/boot/dts/sun7i-a20-pcduino3.dts
++++ b/arch/arm/boot/dts/sun7i-a20-pcduino3.dts
+@@ -155,3 +155,62 @@
+ status = "okay";
+ };
+ };
++&nfc {
++ pinctrl-names = "default";
++ pinctrl-0 = <&nand_pins_a &nand_cs0_pins_a &nand_rb0_pins_a>;
++ status = "okay";
++
++ nand@0 {
++ #address-cells = <2>;
++ #size-cells = <2>;
++ reg = <0>;
++ allwinner,rb = <0>;
++
++ nand-ecc-mode = "hw";
++ nand-rnd-mode = "hw";
++ nand-ecc-strength = <40>;
++ nand-ecc-step-size = <1024>;
++ nand-on-flash-bbt;
++
++ boot0@0 {
++ label = "boot0";
++ reg = /bits/ 64 <0x0 0x200000>;
++ nand-ecc-mode = "hw_syndrome";
++ nand-rnd-mode = "hw";
++ nand-randomizer-seeds = /bits/ 16 <0x4a80>;
++ };
++
++ boot0-rescue@200000 {
++ label = "boot0-rescue";
++ reg = /bits/ 64 <0x200000 0x200000>;
++ nand-ecc-mode = "hw_syndrome";
++ nand-rnd-mode = "hw";
++ nand-randomizer-seeds = /bits/ 16 <0x4a80>;
++ };
++
++ main@200000 {
++ label = "main";
++ reg = /bits/ 64 <0x400000 0xffc00000>;
++ nand-ecc-mode = "hw";
++ nand-rnd-mode = "hw";
++ nand-randomizer-seeds = /bits/ 16 <
++ 0x2b75 0x0bd0 0x5ca3 0x62d1 0x1c93 0x07e9 0x2162 0x3a72
++ 0x0d67 0x67f9 0x1be7 0x077d 0x032f 0x0dac 0x2716 0x2436
++ 0x7922 0x1510 0x3860 0x5287 0x480f 0x4252 0x1789 0x5a2d
++ 0x2a49 0x5e10 0x437f 0x4b4e 0x2f45 0x216e 0x5cb7 0x7130
++ 0x2a3f 0x60e4 0x4dc9 0x0ef0 0x0f52 0x1bb9 0x6211 0x7a56
++ 0x226d 0x4ea7 0x6f36 0x3692 0x38bf 0x0c62 0x05eb 0x4c55
++ 0x60f4 0x728c 0x3b6f 0x2037 0x7f69 0x0936 0x651a 0x4ceb
++ 0x6218 0x79f3 0x383f 0x18d9 0x4f05 0x5c82 0x2912 0x6f17
++ 0x6856 0x5938 0x1007 0x61ab 0x3e7f 0x57c2 0x542f 0x4f62
++ 0x7454 0x2eac 0x7739 0x42d4 0x2f90 0x435a 0x2e52 0x2064
++ 0x637c 0x66ad 0x2c90 0x0bad 0x759c 0x0029 0x0986 0x7126
++ 0x1ca7 0x1605 0x386a 0x27f5 0x1380 0x6d75 0x24c3 0x0f8e
++ 0x2b7a 0x1418 0x1fd1 0x7dc1 0x2d8e 0x43af 0x2267 0x7da3
++ 0x4e3d 0x1338 0x50db 0x454d 0x764d 0x40a3 0x42e6 0x262b
++ 0x2d2e 0x1aea 0x2e17 0x173d 0x3a6e 0x71bf 0x25f9 0x0a5d
++ 0x7c57 0x0fbe 0x46ce 0x4939 0x6b17 0x37bb 0x3e91 0x76db>;
++ };
++ };
++};
++
--- /dev/null
+diff --git a/drivers/mtd/nand/nand_base.c b/drivers/mtd/nand/nand_base.c
+index c2e1232..f561c68 100644
+--- a/drivers/mtd/nand/nand_base.c
++++ b/drivers/mtd/nand/nand_base.c
+@@ -3611,6 +3611,8 @@ static inline bool is_full_id_nand(struct nand_flash_dev *type)
+ static bool find_full_id_nand(struct mtd_info *mtd, struct nand_chip *chip,
+ struct nand_flash_dev *type, u8 *id_data, int *busw)
+ {
++ int mode;
++
+ if (!strncmp(type->id, id_data, type->id_len)) {
+ mtd->writesize = type->pagesize;
+ mtd->erasesize = type->erasesize;
+@@ -3621,8 +3623,9 @@ static bool find_full_id_nand(struct mtd_info *mtd, struct nand_chip *chip,
+ chip->options |= type->options;
+ chip->ecc_strength_ds = NAND_ECC_STRENGTH(type);
+ chip->ecc_step_ds = NAND_ECC_STEP(type);
+- chip->onfi_timing_mode_default =
+- type->onfi_timing_mode_default;
++
++ mode = type->onfi_timing_mode_default;
++ chip->sdr_timings = onfi_async_timing_mode_to_sdr_timings(mode);
+
+ *busw = type->options & NAND_BUSWIDTH_16;
+
+diff --git a/drivers/mtd/nand/sunxi_nand.c b/drivers/mtd/nand/sunxi_nand.c
+index 5095a32..72e4135 100644
+--- a/drivers/mtd/nand/sunxi_nand.c
++++ b/drivers/mtd/nand/sunxi_nand.c
+@@ -1083,7 +1083,7 @@ static int sunxi_nand_chip_init_timings(struct sunxi_nand_chip *chip,
+
+ mode = onfi_get_async_timing_mode(&chip->nand);
+ if (mode == ONFI_TIMING_MODE_UNKNOWN) {
+- mode = chip->nand.onfi_timing_mode_default;
++ timings = chip->nand.sdr_timings;
+ } else {
+ uint8_t feature[ONFI_SUBFEATURE_PARAM_LEN] = {};
+
+@@ -1097,9 +1097,10 @@ static int sunxi_nand_chip_init_timings(struct sunxi_nand_chip *chip,
+ feature);
+ if (ret)
+ return ret;
++
++ timings = onfi_async_timing_mode_to_sdr_timings(mode);
+ }
+
+- timings = onfi_async_timing_mode_to_sdr_timings(mode);
+ if (IS_ERR(timings))
+ return PTR_ERR(timings);
+
+diff --git a/include/linux/mtd/nand.h b/include/linux/mtd/nand.h
+index 3d4ea7e..2eb92a3 100644
+--- a/include/linux/mtd/nand.h
++++ b/include/linux/mtd/nand.h
+@@ -536,6 +536,55 @@ struct nand_buffers {
+ uint8_t *databuf;
+ };
+
++/*
++ * struct nand_sdr_timings - SDR NAND chip timings
++ *
++ * This struct defines the timing requirements of a SDR NAND chip.
++ * These informations can be found in every NAND datasheets and the timings
++ * meaning are described in the ONFI specifications:
++ * www.onfi.org/~/media/ONFI/specs/onfi_3_1_spec.pdf (chapter 4.15 Timing
++ * Parameters)
++ *
++ * All these timings are expressed in picoseconds.
++ */
++
++struct nand_sdr_timings {
++ u32 tALH_min;
++ u32 tADL_min;
++ u32 tALS_min;
++ u32 tAR_min;
++ u32 tCEA_max;
++ u32 tCEH_min;
++ u32 tCH_min;
++ u32 tCHZ_max;
++ u32 tCLH_min;
++ u32 tCLR_min;
++ u32 tCLS_min;
++ u32 tCOH_min;
++ u32 tCS_min;
++ u32 tDH_min;
++ u32 tDS_min;
++ u32 tFEAT_max;
++ u32 tIR_min;
++ u32 tITC_max;
++ u32 tRC_min;
++ u32 tREA_max;
++ u32 tREH_min;
++ u32 tRHOH_min;
++ u32 tRHW_min;
++ u32 tRHZ_max;
++ u32 tRLOH_min;
++ u32 tRP_min;
++ u32 tRR_min;
++ u64 tRST_max;
++ u32 tWB_max;
++ u32 tWC_min;
++ u32 tWH_min;
++ u32 tWHR_min;
++ u32 tWP_min;
++ u32 tWW_min;
++};
++
+ /**
+ * struct nand_chip - NAND Private Flash Chip Data
+ * @IO_ADDR_R: [BOARDSPECIFIC] address to read the 8 I/O lines of the
+@@ -600,11 +649,7 @@ struct nand_buffers {
+ * @ecc_step_ds: [INTERN] ECC step required by the @ecc_strength_ds,
+ * also from the datasheet. It is the recommended ECC step
+ * size, if known; if unknown, set to zero.
+- * @onfi_timing_mode_default: [INTERN] default ONFI timing mode. This field is
+- * either deduced from the datasheet if the NAND
+- * chip is not ONFI compliant or set to 0 if it is
+- * (an ONFI chip is always configured in mode 0
+- * after a NAND reset)
++ * @sdr_timings [INTERN] Pointer to default timings for SDR NAND.
+ * @numchips: [INTERN] number of physical chips
+ * @chipsize: [INTERN] the size of one chip for multichip arrays
+ * @pagemask: [INTERN] page number mask = number of (pages / chip) - 1
+@@ -689,7 +734,7 @@ struct nand_chip {
+ uint8_t bits_per_cell;
+ uint16_t ecc_strength_ds;
+ uint16_t ecc_step_ds;
+- int onfi_timing_mode_default;
++ const struct nand_sdr_timings *sdr_timings;
+ int badblockpos;
+ int badblockbits;
+
+@@ -975,55 +1020,6 @@ static inline int jedec_feature(struct nand_chip *chip)
+ : 0;
+ }
+
+-/*
+- * struct nand_sdr_timings - SDR NAND chip timings
+- *
+- * This struct defines the timing requirements of a SDR NAND chip.
+- * These informations can be found in every NAND datasheets and the timings
+- * meaning are described in the ONFI specifications:
+- * www.onfi.org/~/media/ONFI/specs/onfi_3_1_spec.pdf (chapter 4.15 Timing
+- * Parameters)
+- *
+- * All these timings are expressed in picoseconds.
+- */
+-
+-struct nand_sdr_timings {
+- u32 tALH_min;
+- u32 tADL_min;
+- u32 tALS_min;
+- u32 tAR_min;
+- u32 tCEA_max;
+- u32 tCEH_min;
+- u32 tCH_min;
+- u32 tCHZ_max;
+- u32 tCLH_min;
+- u32 tCLR_min;
+- u32 tCLS_min;
+- u32 tCOH_min;
+- u32 tCS_min;
+- u32 tDH_min;
+- u32 tDS_min;
+- u32 tFEAT_max;
+- u32 tIR_min;
+- u32 tITC_max;
+- u32 tRC_min;
+- u32 tREA_max;
+- u32 tREH_min;
+- u32 tRHOH_min;
+- u32 tRHW_min;
+- u32 tRHZ_max;
+- u32 tRLOH_min;
+- u32 tRP_min;
+- u32 tRR_min;
+- u64 tRST_max;
+- u32 tWB_max;
+- u32 tWC_min;
+- u32 tWH_min;
+- u32 tWHR_min;
+- u32 tWP_min;
+- u32 tWW_min;
+-};
+-
+ /* get timing characteristics from ONFI timing mode. */
+ const struct nand_sdr_timings *onfi_async_timing_mode_to_sdr_timings(int mode);
+ #endif /* __LINUX_MTD_NAND_H */
--- /dev/null
+diff --git a/drivers/mtd/nand/nand_base.c b/drivers/mtd/nand/nand_base.c
+index f561c68..8e636df 100644
+--- a/drivers/mtd/nand/nand_base.c
++++ b/drivers/mtd/nand/nand_base.c
+@@ -3624,8 +3624,13 @@ static bool find_full_id_nand(struct mtd_info *mtd, struct nand_chip *chip,
+ chip->ecc_strength_ds = NAND_ECC_STRENGTH(type);
+ chip->ecc_step_ds = NAND_ECC_STEP(type);
+
+- mode = type->onfi_timing_mode_default;
+- chip->sdr_timings = onfi_async_timing_mode_to_sdr_timings(mode);
++ if (type->custom_sdr_timing) {
++ chip->sdr_timings = type->custom_sdr_timing;
++ } else {
++ mode = type->onfi_timing_mode_default;
++ chip->sdr_timings =
++ onfi_async_timing_mode_to_sdr_timings(mode);
++ }
+
+ *busw = type->options & NAND_BUSWIDTH_16;
+
+diff --git a/include/linux/mtd/nand.h b/include/linux/mtd/nand.h
+index 2eb92a3..7d9e599 100644
+--- a/include/linux/mtd/nand.h
++++ b/include/linux/mtd/nand.h
+@@ -863,6 +863,7 @@ struct nand_flash_dev {
+ uint16_t step_ds;
+ } ecc;
+ int onfi_timing_mode_default;
++ const struct nand_sdr_timings *custom_sdr_timing;
+ };
+
+ /**
--- /dev/null
+diff --git a/drivers/mtd/nand/nand_ids.c b/drivers/mtd/nand/nand_ids.c
+index dd620c1..15b4a03 100644
+--- a/drivers/mtd/nand/nand_ids.c
++++ b/drivers/mtd/nand/nand_ids.c
+@@ -19,6 +19,49 @@
+ #define SP_OPTIONS16 (SP_OPTIONS | NAND_BUSWIDTH_16)
+
+ /*
++ * Hynix H27UBG8T2BTR timings
++ * This chip has an exceptionally large tADL, which results in only supporting
++ * ONFI timing mode 0. Using these timings, the clock can be raised from
++ * 12.5MHz to 50MHz.
++ */
++const struct nand_sdr_timings hynix_h27ubg8t2btr_sdr_timing = {
++ .tADL_min = 200000,
++ .tALH_min = 5000,
++ .tALS_min = 10000,
++ .tAR_min = 10000,
++ .tCEA_max = 100000,
++ .tCEH_min = 20000,
++ .tCH_min = 5000,
++ .tCHZ_max = 50000,
++ .tCLH_min = 5000,
++ .tCLR_min = 10000,
++ .tCLS_min = 10000,
++ .tCOH_min = 15000,
++ .tCS_min = 20000,
++ .tDH_min = 5000,
++ .tDS_min = 10000,
++ .tFEAT_max = 1000000,
++ .tIR_min = 0,
++ .tITC_max = 1000000,
++ .tRC_min = 20000,
++ .tREA_max = 16000,
++ .tREH_min = 8000,
++ .tRHOH_min = 15000,
++ .tRHW_min = 100000,
++ .tRHZ_max = 100000,
++ .tRLOH_min = 5000,
++ .tRP_min = 10000,
++ .tRST_max = 500000000,
++ .tWB_max = 100000,
++ .tRR_min = 20000,
++ .tWC_min = 20000,
++ .tWH_min = 10000,
++ .tWHR_min = 80000,
++ .tWP_min = 8000,
++ .tWW_min = 100000,
++};
++
++/*
+ * The chip ID list:
+ * name, device ID, page size, chip size in MiB, eraseblock size, options
+ *
+@@ -50,6 +93,10 @@ struct nand_flash_dev nand_flash_ids[] = {
+ { .id = {0xad, 0xde, 0x94, 0xda, 0x74, 0xc4} },
+ SZ_8K, SZ_8K, SZ_2M, 0, 6, 640, NAND_ECC_INFO(40, SZ_1K),
+ 4 },
++ {"H27UBG8T2BTR-BC 64G 3.3V 8-bit",
++ { .id = {0xad, 0xd7, 0x94, 0xda, 0x74, 0xc3} },
++ SZ_8K, SZ_4K, SZ_2M, 0, 6, 640, NAND_ECC_INFO(40, SZ_1K),
++ 0, &hynix_h27ubg8t2btr_sdr_timing },
+
+ LEGACY_ID_NAND("NAND 4MiB 5V 8-bit", 0x6B, 4, SZ_8K, SP_OPTIONS),
+ LEGACY_ID_NAND("NAND 4MiB 3,3V 8-bit", 0xE3, 4, SZ_8K, SP_OPTIONS),
--- /dev/null
+From b1488f1a55da6a297ac4e8e9140922f35b7583c5 Mon Sep 17 00:00:00 2001
+From: Boris Brezillon <boris.brezillon@free-electrons.com>
+Date: Mon, 15 Jun 2015 11:09:58 +0200
+Subject: [PATCH] nand: sunxi: fix write to USER_DATA reg
+
+The USER_DATA register cannot be updated with readb on A13 SoCs, thus
+triggering a bug when using memcpy_toio on this register.
+Use writel (plus a temporary variable to old the USER_DATA value) to
+address that problem.
+
+Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
+---
+ drivers/mtd/nand/sunxi_nand.c | 38 +++++++++++++++++++++-----------------
+ 1 file changed, 21 insertions(+), 17 deletions(-)
+
+diff --git a/drivers/mtd/nand/sunxi_nand.c b/drivers/mtd/nand/sunxi_nand.c
+index 72ab770..3668197 100644
+--- a/drivers/mtd/nand/sunxi_nand.c
++++ b/drivers/mtd/nand/sunxi_nand.c
+@@ -904,7 +904,7 @@ static int sunxi_nfc_hw_ecc_write_page(struct mtd_info *mtd,
+
+ for (i = 0; i < ecc->steps; i++) {
+ bool rndactiv = false;
+- u8 oob_buf[4];
++ u32 user_data;
+
+ if (i)
+ chip->cmdfunc(mtd, NAND_CMD_RNDIN, i * ecc->size, -1);
+@@ -915,15 +915,13 @@ static int sunxi_nfc_hw_ecc_write_page(struct mtd_info *mtd,
+ offset = layout->eccpos[i * ecc->bytes] - 4 + mtd->writesize;
+
+ /* Fill OOB data in */
+- if (!oob_required)
+- memset(oob_buf, 0xff, 4);
+- else
+- memcpy(oob_buf,
+- chip->oob_poi + layout->oobfree[i].offset,
+- 4);
+-
+-
+- memcpy_toio(nfc->regs + NFC_REG_USER_DATA_BASE, oob_buf, 4);
++ if (!oob_required) {
++ user_data = 0xffffffff;
++ } else {
++ memcpy(&user_data,
++ chip->oob_poi + layout->oobfree[i].offset, 4);
++ user_data = le32_to_cpu(user_data);
++ }
+
+ if (i) {
+ cnt = ecc->bytes + 4;
+@@ -942,12 +940,16 @@ static int sunxi_nfc_hw_ecc_write_page(struct mtd_info *mtd,
+ if (rndactiv) {
+ /* pre randomize to generate FF patterns on the NAND */
+ if (!i) {
++ u8 oob_tmp[2];
+ u16 state = rnd->subseeds[rnd->page % rnd->nseeds];
++ oob_tmp[0] = user_data;
++ oob_tmp[1] = user_data >> 8;
+ state = sunxi_nfc_hwrnd_single_step(state, 15);
+- oob_buf[0] ^= state;
++ oob_tmp[0] ^= state;
+ state = sunxi_nfc_hwrnd_step(rnd, state, 1);
+- oob_buf[1] ^= state;
+- memcpy_toio(nfc->regs + NFC_REG_USER_DATA_BASE, oob_buf, 4);
++ oob_tmp[1] ^= state;
++ user_data &= ~0xffff;
++ user_data |= oob_tmp[0] | (oob_tmp[1] << 8);
+ }
+ tmp = readl(nfc->regs + NFC_REG_ECC_CTL);
+ tmp &= ~(NFC_RANDOM_DIRECTION | NFC_ECC_EXCEPTION);
+@@ -955,6 +957,8 @@ static int sunxi_nfc_hw_ecc_write_page(struct mtd_info *mtd,
+ writel(tmp, nfc->regs + NFC_REG_ECC_CTL);
+ }
+
++ writel(user_data, nfc->regs + NFC_REG_USER_DATA_BASE);
++
+ chip->cmdfunc(mtd, NAND_CMD_RNDIN, offset, -1);
+
+ ret = sunxi_nfc_wait_cmd_fifo_empty(nfc);
+@@ -1164,13 +1168,13 @@ static int sunxi_nfc_hw_syndrome_ecc_write_page(struct mtd_info *mtd,
+ /* Fill OOB data in */
+ if (oob_required) {
+ tmp = 0xffffffff;
+- memcpy_toio(nfc->regs + NFC_REG_USER_DATA_BASE, &tmp,
+- 4);
+ } else {
+- memcpy_toio(nfc->regs + NFC_REG_USER_DATA_BASE, oob,
+- 4);
++ memcpy(&tmp, oob, sizeof(tmp));
++ tmp = le32_to_cpu(tmp);
+ }
+
++ writel(tmp, nfc->regs + NFC_REG_USER_DATA_BASE);
++
+ cnt = ecc->bytes + 4;
+ if (rnd &&
+ nand_rnd_is_activ(mtd, rnd->page, offset, &cnt) > 0 &&
--- /dev/null
+From 8a7013f47196abed7e6a40e93d1de1639cd46228 Mon Sep 17 00:00:00 2001
+From: Hans de Goede <hdegoede@redhat.com>
+Date: Fri, 10 Jul 2015 17:03:03 +0200
+Subject: [PATCH] mmc: sunxi: Don't start commands while the card is busy
+
+Some sdio wifi modules have not been working reliable with the sunxi-mmc
+host code. This turns out to be caused by it starting new commands while
+the card signals that it is still busy processing a previous command.
+
+This commit fixes this, thereby fixing the wifi reliability issues on
+the Cubietruck and other sunxi boards using sdio wifi.
+
+Reported-by: Eugene K <sigintmailru@gmail.com>
+Suggested-by: Eugene K <sigintmailru@gmail.com>
+Cc: Eugene K <sigintmailru@gmail.com>
+Cc: Arend van Spriel <arend@broadcom.com>
+Signed-off-by: Hans de Goede <hdegoede@redhat.com>
+---
+Changes in v2:
+-Properly accredit Eugene K for coming up with the fix for this
+---
+ drivers/mmc/host/sunxi-mmc.c | 32 ++++++++++++++++++++++++++++++++
+ 1 file changed, 32 insertions(+)
+
+diff --git a/drivers/mmc/host/sunxi-mmc.c b/drivers/mmc/host/sunxi-mmc.c
+index 4d3e1ff..daa90b7 100644
+--- a/drivers/mmc/host/sunxi-mmc.c
++++ b/drivers/mmc/host/sunxi-mmc.c
+@@ -289,6 +289,24 @@ static int sunxi_mmc_init_host(struct mmc_host *mmc)
+ return 0;
+ }
+
++/* Wait for card to report ready before starting a new cmd */
++static int sunxi_mmc_wait_card_ready(struct sunxi_mmc_host *host)
++{
++ unsigned long expire = jiffies + msecs_to_jiffies(500);
++ u32 rval;
++
++ do {
++ rval = mmc_readl(host, REG_STAS);
++ } while (time_before(jiffies, expire) && (rval & SDXC_CARD_DATA_BUSY));
++
++ if (rval & SDXC_CARD_DATA_BUSY) {
++ dev_err(mmc_dev(host->mmc), "Error R1 ready timeout\n");
++ return -EIO;
++ }
++
++ return 0;
++}
++
+ static void sunxi_mmc_init_idma_des(struct sunxi_mmc_host *host,
+ struct mmc_data *data)
+ {
+@@ -383,6 +401,8 @@ static void sunxi_mmc_send_manual_stop(struct sunxi_mmc_host *host,
+ u32 arg, cmd_val, ri;
+ unsigned long expire = jiffies + msecs_to_jiffies(1000);
+
++ sunxi_mmc_wait_card_ready(host);
++
+ cmd_val = SDXC_START | SDXC_RESP_EXPIRE |
+ SDXC_STOP_ABORT_CMD | SDXC_CHECK_RESPONSE_CRC;
+
+@@ -597,6 +617,11 @@ static int sunxi_mmc_oclk_onoff(struct sunxi_mmc_host *host, u32 oclk_en)
+ {
+ unsigned long expire = jiffies + msecs_to_jiffies(250);
+ u32 rval;
++ int ret;
++
++ ret = sunxi_mmc_wait_card_ready(host);
++ if (ret)
++ return ret;
+
+ rval = mmc_readl(host, REG_CLKCR);
+ rval &= ~(SDXC_CARD_CLOCK_ON | SDXC_LOW_POWER_ON);
+@@ -785,6 +810,13 @@ static void sunxi_mmc_request(struct mmc_host *mmc, struct mmc_request *mrq)
+ return;
+ }
+
++ ret = sunxi_mmc_wait_card_ready(host);
++ if (ret) {
++ mrq->cmd->error = ret;
++ mmc_request_done(mmc, mrq);
++ return;
++ }
++
+ if (data) {
+ ret = sunxi_mmc_map_dma(host, data);
+ if (ret < 0) {
--- /dev/null
+diff --git a/arch/arm/boot/dts/sun7i-a20.dtsi b/arch/arm/boot/dts/sun7i-a20.dtsi
+index 6a63f30..f5f384c 100644
+--- a/arch/arm/boot/dts/sun7i-a20.dtsi
++++ b/arch/arm/boot/dts/sun7i-a20.dtsi
+@@ -107,7 +107,7 @@
+ 720000 1200000
+ 528000 1100000
+ 312000 1000000
+- 144000 900000
++ 144000 1000000
+ >;
+ #cooling-cells = <2>;
+ cooling-min-level = <0>;
--- /dev/null
+From 14a882df14a5ae859b245bc708ce3fce47a91594 Mon Sep 17 00:00:00 2001
+From: Jens Kuske <jenskuske@gmail.com>
+Date: Fri, 15 May 2015 18:38:55 +0200
+Subject: ARM: sunxi: Introduce Allwinner H3 support
+
+The Allwinner H3 is a quad-core Cortex-A7-based SoC. It is very similar
+to other sun8i family SoCs like the A23.
+
+Signed-off-by: Jens Kuske <jenskuske@gmail.com>
+Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
+
+diff --git a/Documentation/devicetree/bindings/arm/sunxi.txt b/Documentation/devicetree/bindings/arm/sunxi.txt
+index 42941fd..3cb4b94 100644
+--- a/Documentation/devicetree/bindings/arm/sunxi.txt
++++ b/Documentation/devicetree/bindings/arm/sunxi.txt
+@@ -9,4 +9,5 @@ using one of the following compatible strings:
+ allwinner,sun6i-a31
+ allwinner,sun7i-a20
+ allwinner,sun8i-a23
++ allwinner,sun8i-h3
+ allwinner,sun9i-a80
+diff --git a/arch/arm/mach-sunxi/Kconfig b/arch/arm/mach-sunxi/Kconfig
+index 81502b9..4efe2d4 100644
+--- a/arch/arm/mach-sunxi/Kconfig
++++ b/arch/arm/mach-sunxi/Kconfig
+@@ -35,7 +35,7 @@ config MACH_SUN7I
+ select SUN5I_HSTIMER
+
+ config MACH_SUN8I
+- bool "Allwinner A23 (sun8i) SoCs support"
++ bool "Allwinner sun8i Family SoCs support"
+ default ARCH_SUNXI
+ select ARM_GIC
+ select MFD_SUN6I_PRCM
+diff --git a/arch/arm/mach-sunxi/sunxi.c b/arch/arm/mach-sunxi/sunxi.c
+index 1bc811a..8270902 100644
+--- a/arch/arm/mach-sunxi/sunxi.c
++++ b/arch/arm/mach-sunxi/sunxi.c
+@@ -67,10 +67,12 @@ MACHINE_END
+
+ static const char * const sun8i_board_dt_compat[] = {
+ "allwinner,sun8i-a23",
++ "allwinner,sun8i-h3",
+ NULL,
+ };
+
+-DT_MACHINE_START(SUN8I_DT, "Allwinner sun8i (A23) Family")
++DT_MACHINE_START(SUN8I_DT, "Allwinner sun8i Family")
++ .init_time = sun6i_timer_init,
+ .dt_compat = sun8i_board_dt_compat,
+ .init_late = sunxi_dt_cpufreq_init,
+ MACHINE_END
+--
+cgit v0.10.2
+
--- /dev/null
+diff --git a/Documentation/devicetree/bindings/dma/sun6i-dma.txt b/Documentation/devicetree/bindings/dma/sun6i-dma.txt
+index 9cdcba24d..d13c136 100644
+--- a/Documentation/devicetree/bindings/dma/sun6i-dma.txt
++++ b/Documentation/devicetree/bindings/dma/sun6i-dma.txt
+@@ -4,7 +4,10 @@ This driver follows the generic DMA bindings defined in dma.txt.
+
+ Required properties:
+
+-- compatible: Must be "allwinner,sun6i-a31-dma" or "allwinner,sun8i-a23-dma"
++- compatible: Must be one of
++ "allwinner,sun6i-a31-dma"
++ "allwinner,sun8i-a23-dma"
++ "allwinner,sun8i-h3-dma"
+ - reg: Should contain the registers base address and length
+ - interrupts: Should contain a reference to the interrupt used by this device
+ - clocks: Should contain a reference to the parent AHB clock
+diff --git a/drivers/dma/sun6i-dma.c b/drivers/dma/sun6i-dma.c
+index 11e5365..842ff97 100644
+--- a/drivers/dma/sun6i-dma.c
++++ b/drivers/dma/sun6i-dma.c
+@@ -891,9 +891,21 @@ static struct sun6i_dma_config sun8i_a23_dma_cfg = {
+ .nr_max_vchans = 37,
+ };
+
++/*
++ * The H3 has 12 physical channels, a maximum DRQ port id of 27,
++ * and a total of 34 usable source and destination endpoints.
++ */
++
++static struct sun6i_dma_config sun8i_h3_dma_cfg = {
++ .nr_max_channels = 12,
++ .nr_max_requests = 27,
++ .nr_max_vchans = 34,
++};
++
+ static const struct of_device_id sun6i_dma_match[] = {
+ { .compatible = "allwinner,sun6i-a31-dma", .data = &sun6i_a31_dma_cfg },
+ { .compatible = "allwinner,sun8i-a23-dma", .data = &sun8i_a23_dma_cfg },
++ { .compatible = "allwinner,sun8i-h3-dma", .data = &sun8i_h3_dma_cfg },
+ { /* sentinel */ }
+ };
+
--- /dev/null
+From 1a28c76f3965775854ed6f6229de457c3d0674ab Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Emilio=20L=C3=B3pez?= <emilio@elopez.com.ar>
+Date: Sat, 4 Apr 2015 11:37:24 +0200
+Subject: [PATCH] dma: sun4i: Add support for the DMA engine on sun[457]i SoCs
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+This patch adds support for the DMA engine present on Allwinner A10,
+A13, A10S and A20 SoCs. This engine has two kinds of channels: normal
+and dedicated. The main difference is in the mode of operation;
+while a single normal channel may be operating at any given time,
+dedicated channels may operate simultaneously provided there is no
+overlap of source or destination.
+
+Hardware documentation can be found on A10 User Manual (section 12), A13
+User Manual (section 14) and A20 User Manual (section 1.12)
+
+Signed-off-by: Emilio López <emilio@elopez.com.ar>
+Signed-off-by: Hans de Goede <hdegoede@redhat.com>
+---
+
+Changes from v4:
+ * Fix for interrupt triggering after freeing a dma-channel, this fixed
+ the problems with jack
+ * Adjust to recent kernel dma API changes
+
+Changes from v3:
+ * Drop threaded IRQ to get lower latency
+ * Drop chancnt
+ * Fix crash on first use when using a DMA-aware bootloader (eg., one
+ that supports NAND)
+
+Changes from v2:
+ * Faster memcpy
+ * Quicker cyclic transfers
+ * Address some stylistic and locking comments from Maxime
+ * probably some more stuff I'm forgetting
+
+Changes from v1:
+ * address comments from Chen-Yu and Maxime
+ * fix issue converting bus width
+ * switch to using a threaded IRQ instead of a tasklet on
+ recommendation from Maxime
+ * fix issue setting magic timing parameter for SPI transfers
+ * fix an issue with list handling reported by the kbuild 0-DAY robot (thanks!)
+ * drop a lot of unused #define
+ * probably some more stuff I'm forgetting
+---
+ .../devicetree/bindings/dma/sun4i-dma.txt | 46 +
+ drivers/dma/Kconfig | 11 +
+ drivers/dma/Makefile | 1 +
+ drivers/dma/sun4i-dma.c | 1235 ++++++++++++++++++++
+ 4 files changed, 1293 insertions(+)
+ create mode 100644 Documentation/devicetree/bindings/dma/sun4i-dma.txt
+ create mode 100644 drivers/dma/sun4i-dma.c
+
+diff --git a/Documentation/devicetree/bindings/dma/sun4i-dma.txt b/Documentation/devicetree/bindings/dma/sun4i-dma.txt
+new file mode 100644
+index 0000000..f1634a2
+--- /dev/null
++++ b/Documentation/devicetree/bindings/dma/sun4i-dma.txt
+@@ -0,0 +1,46 @@
++Allwinner A10 DMA Controller
++
++This driver follows the generic DMA bindings defined in dma.txt.
++
++Required properties:
++
++- compatible: Must be "allwinner,sun4i-a10-dma"
++- reg: Should contain the registers base address and length
++- interrupts: Should contain a reference to the interrupt used by this device
++- clocks: Should contain a reference to the parent AHB clock
++- #dma-cells : Should be 2, first cell denoting normal or dedicated dma,
++ second cell holding the request line number.
++
++Example:
++ dma: dma-controller@01c02000 {
++ compatible = "allwinner,sun4i-a10-dma";
++ reg = <0x01c02000 0x1000>;
++ interrupts = <27>;
++ clocks = <&ahb_gates 6>;
++ #dma-cells = <2>;
++ };
++
++Clients:
++
++DMA clients connected to the Allwinner A10 DMA controller must use the
++format described in the dma.txt file, using a three-cell specifier for
++each channel: a phandle plus two integer cells.
++The three cells in order are:
++
++1. A phandle pointing to the DMA controller.
++2. Whether it is using normal (0) or dedicated (1) channels
++3. The port ID as specified in the datasheet
++
++Example:
++ spi2: spi@01c17000 {
++ compatible = "allwinner,sun4i-a10-spi";
++ reg = <0x01c17000 0x1000>;
++ interrupts = <0 12 4>;
++ clocks = <&ahb_gates 22>, <&spi2_clk>;
++ clock-names = "ahb", "mod";
++ dmas = <&dma 1 29>, <&dma 1 28>;
++ dma-names = "rx", "tx";
++ status = "disabled";
++ #address-cells = <1>;
++ #size-cells = <0>;
++ };
+diff --git a/drivers/dma/Kconfig b/drivers/dma/Kconfig
+index fd7ac13..12372c2 100644
+--- a/drivers/dma/Kconfig
++++ b/drivers/dma/Kconfig
+@@ -443,6 +443,17 @@ config XGENE_DMA
+ help
+ Enable support for the APM X-Gene SoC DMA engine.
+
++config SUN4I_DMA
++ tristate "Allwinner A10 DMA support"
++ depends on (MACH_SUN4I || MACH_SUN5I || MACH_SUN7I || (COMPILE_TEST && OF && ARM))
++ default (MACH_SUN4I || MACH_SUN5I || MACH_SUN7I)
++ select DMA_ENGINE
++ select DMA_OF
++ select DMA_VIRTUAL_CHANNELS
++ help
++ Enable support for the DMA controller present in the sun4i,
++ sun5i and sun7i Allwinner ARM SoCs.
++
+ config DMA_ENGINE
+ bool
+
+diff --git a/drivers/dma/Makefile b/drivers/dma/Makefile
+index 69f77d5..3eba5e9 100644
+--- a/drivers/dma/Makefile
++++ b/drivers/dma/Makefile
+@@ -54,3 +54,4 @@ obj-$(CONFIG_NBPFAXI_DMA) += nbpfaxi.o
+ obj-$(CONFIG_DMA_SUN6I) += sun6i-dma.o
+ obj-$(CONFIG_IMG_MDC_DMA) += img-mdc-dma.o
+ obj-$(CONFIG_XGENE_DMA) += xgene-dma.o
++obj-$(CONFIG_SUN4I_DMA) += sun4i-dma.o
+diff --git a/drivers/dma/sun4i-dma.c b/drivers/dma/sun4i-dma.c
+new file mode 100644
+index 0000000..a8d55518
+--- /dev/null
++++ b/drivers/dma/sun4i-dma.c
+@@ -0,0 +1,1235 @@
++/*
++ * Copyright (C) 2014 Emilio López
++ * Emilio López <emilio@elopez.com.ar>
++ *
++ * This program is free software; you can redistribute it and/or modify
++ * it under the terms of the GNU General Public License as published by
++ * the Free Software Foundation; either version 2 of the License, or
++ * (at your option) any later version.
++ */
++
++#include <linux/bitmap.h>
++#include <linux/bitops.h>
++#include <linux/clk.h>
++#include <linux/dmaengine.h>
++#include <linux/dmapool.h>
++#include <linux/interrupt.h>
++#include <linux/module.h>
++#include <linux/of_dma.h>
++#include <linux/platform_device.h>
++#include <linux/slab.h>
++#include <linux/spinlock.h>
++
++#include "virt-dma.h"
++
++/** Normal DMA register values **/
++
++/* Normal DMA source/destination data request type values */
++#define NDMA_DRQ_TYPE_SDRAM 0x16
++#define NDMA_DRQ_TYPE_LIMIT (0x1F + 1)
++
++/** Normal DMA register layout **/
++
++/* Normal DMA configuration register layout */
++#define NDMA_CFG_LOADING BIT(31)
++#define NDMA_CFG_CONT_MODE BIT(30)
++#define NDMA_CFG_WAIT_STATE(n) ((n) << 27)
++#define NDMA_CFG_DEST_DATA_WIDTH(width) ((width) << 25)
++#define NDMA_CFG_DEST_BURST_LENGTH(len) ((len) << 23)
++#define NDMA_CFG_DEST_NON_SECURE BIT(22)
++#define NDMA_CFG_DEST_FIXED_ADDR BIT(21)
++#define NDMA_CFG_DEST_DRQ_TYPE(type) ((type) << 16)
++#define NDMA_CFG_BYTE_COUNT_MODE_REMAIN BIT(15)
++#define NDMA_CFG_SRC_DATA_WIDTH(width) ((width) << 9)
++#define NDMA_CFG_SRC_BURST_LENGTH(len) ((len) << 7)
++#define NDMA_CFG_SRC_NON_SECURE BIT(6)
++#define NDMA_CFG_SRC_FIXED_ADDR BIT(5)
++#define NDMA_CFG_SRC_DRQ_TYPE(type) ((type) << 0)
++
++/** Dedicated DMA register values **/
++
++/* Dedicated DMA source/destination address mode values */
++#define DDMA_ADDR_MODE_LINEAR 0
++#define DDMA_ADDR_MODE_IO 1
++#define DDMA_ADDR_MODE_HORIZONTAL_PAGE 2
++#define DDMA_ADDR_MODE_VERTICAL_PAGE 3
++
++/* Dedicated DMA source/destination data request type values */
++#define DDMA_DRQ_TYPE_SDRAM 0x1
++#define DDMA_DRQ_TYPE_LIMIT (0x1F + 1)
++
++/** Dedicated DMA register layout **/
++
++/* Dedicated DMA configuration register layout */
++#define DDMA_CFG_LOADING BIT(31)
++#define DDMA_CFG_BUSY BIT(30)
++#define DDMA_CFG_CONT_MODE BIT(29)
++#define DDMA_CFG_DEST_NON_SECURE BIT(28)
++#define DDMA_CFG_DEST_DATA_WIDTH(width) ((width) << 25)
++#define DDMA_CFG_DEST_BURST_LENGTH(len) ((len) << 23)
++#define DDMA_CFG_DEST_ADDR_MODE(mode) ((mode) << 21)
++#define DDMA_CFG_DEST_DRQ_TYPE(type) ((type) << 16)
++#define DDMA_CFG_BYTE_COUNT_MODE_REMAIN BIT(15)
++#define DDMA_CFG_SRC_NON_SECURE BIT(12)
++#define DDMA_CFG_SRC_DATA_WIDTH(width) ((width) << 9)
++#define DDMA_CFG_SRC_BURST_LENGTH(len) ((len) << 7)
++#define DDMA_CFG_SRC_ADDR_MODE(mode) ((mode) << 5)
++#define DDMA_CFG_SRC_DRQ_TYPE(type) ((type) << 0)
++
++/* Dedicated DMA parameter register layout */
++#define DDMA_PARA_DEST_DATA_BLK_SIZE(n) (((n) - 1) << 24)
++#define DDMA_PARA_DEST_WAIT_CYCLES(n) (((n) - 1) << 16)
++#define DDMA_PARA_SRC_DATA_BLK_SIZE(n) (((n) - 1) << 8)
++#define DDMA_PARA_SRC_WAIT_CYCLES(n) (((n) - 1) << 0)
++
++/** DMA register offsets **/
++
++/* General register offsets */
++#define DMA_IRQ_ENABLE_REG 0x0
++#define DMA_IRQ_PENDING_STATUS_REG 0x4
++
++/* Normal DMA register offsets */
++#define NDMA_CHANNEL_REG_BASE(n) (0x100 + (n) * 0x20)
++#define NDMA_CFG_REG 0x0
++#define NDMA_SRC_ADDR_REG 0x4
++#define NDMA_DEST_ADDR_REG 0x8
++#define NDMA_BYTE_COUNT_REG 0xC
++
++/* Dedicated DMA register offsets */
++#define DDMA_CHANNEL_REG_BASE(n) (0x300 + (n) * 0x20)
++#define DDMA_CFG_REG 0x0
++#define DDMA_SRC_ADDR_REG 0x4
++#define DDMA_DEST_ADDR_REG 0x8
++#define DDMA_BYTE_COUNT_REG 0xC
++#define DDMA_PARA_REG 0x18
++
++/** DMA Driver **/
++
++/*
++ * Normal DMA has 8 channels, and Dedicated DMA has another 8, so that's
++ * 16 channels. As for endpoints, there's 29 and 21 respectively. Given
++ * that the Normal DMA endpoints (other than SDRAM) can be used as tx/rx,
++ * we need 78 vchans in total
++ */
++#define NDMA_NR_MAX_CHANNELS 8
++#define DDMA_NR_MAX_CHANNELS 8
++#define DMA_NR_MAX_CHANNELS (NDMA_NR_MAX_CHANNELS + DDMA_NR_MAX_CHANNELS)
++#define NDMA_NR_MAX_VCHANS (29 * 2 - 1)
++#define DDMA_NR_MAX_VCHANS 21
++#define DMA_NR_MAX_VCHANS (NDMA_NR_MAX_VCHANS + DDMA_NR_MAX_VCHANS)
++
++/* This set of DDMA timing parameters were found experimentally while
++ * working with the SPI driver and seem to make it behave correctly */
++#define DDMA_MAGIC_SPI_PARAMETERS (DDMA_PARA_DEST_DATA_BLK_SIZE(1) | \
++ DDMA_PARA_SRC_DATA_BLK_SIZE(1) | \
++ DDMA_PARA_DEST_WAIT_CYCLES(2) | \
++ DDMA_PARA_SRC_WAIT_CYCLES(2))
++
++struct sun4i_dma_pchan {
++ /* Register base of channel */
++ void __iomem *base;
++ /* vchan currently being serviced */
++ struct sun4i_dma_vchan *vchan;
++ /* Is this a dedicated pchan? */
++ int is_dedicated;
++};
++
++struct sun4i_dma_vchan {
++ struct virt_dma_chan vc;
++ struct dma_slave_config cfg;
++ struct sun4i_dma_pchan *pchan;
++ struct sun4i_dma_promise *processing;
++ struct sun4i_dma_contract *contract;
++ u8 endpoint;
++ int is_dedicated;
++};
++
++struct sun4i_dma_promise {
++ u32 cfg;
++ u32 para;
++ dma_addr_t src;
++ dma_addr_t dst;
++ size_t len;
++ struct list_head list;
++};
++
++/* A contract is a set of promises */
++struct sun4i_dma_contract {
++ struct virt_dma_desc vd;
++ struct list_head demands;
++ struct list_head completed_demands;
++ int is_cyclic;
++};
++
++struct sun4i_dma_dev {
++ DECLARE_BITMAP(pchans_used, DMA_NR_MAX_CHANNELS);
++ struct dma_device slave;
++ struct sun4i_dma_pchan *pchans;
++ struct sun4i_dma_vchan *vchans;
++ void __iomem *base;
++ struct clk *clk;
++ int irq;
++ spinlock_t lock;
++};
++
++static struct sun4i_dma_dev *to_sun4i_dma_dev(struct dma_device *dev)
++{
++ return container_of(dev, struct sun4i_dma_dev, slave);
++}
++
++static struct sun4i_dma_vchan *to_sun4i_dma_vchan(struct dma_chan *chan)
++{
++ return container_of(chan, struct sun4i_dma_vchan, vc.chan);
++}
++
++static struct sun4i_dma_contract *to_sun4i_dma_contract(struct virt_dma_desc *vd)
++{
++ return container_of(vd, struct sun4i_dma_contract, vd);
++}
++
++static struct device *chan2dev(struct dma_chan *chan)
++{
++ return &chan->dev->device;
++}
++
++static int convert_burst(u32 maxburst)
++{
++ if (maxburst > 8)
++ return -EINVAL;
++
++ /* 1 -> 0, 4 -> 1, 8 -> 2 */
++ return (maxburst >> 2);
++}
++
++static int convert_buswidth(enum dma_slave_buswidth addr_width)
++{
++ if (addr_width > DMA_SLAVE_BUSWIDTH_4_BYTES)
++ return -EINVAL;
++
++ /* 8 (1 byte) -> 0, 16 (2 bytes) -> 1, 32 (4 bytes) -> 2 */
++ return (addr_width >> 1);
++}
++
++static int choose_optimal_buswidth(dma_addr_t addr)
++{
++ /* On 32 bit aligned addresses, we can use a 32 bit bus width */
++ if (addr % 4 == 0)
++ return DMA_SLAVE_BUSWIDTH_4_BYTES;
++ /* On 16 bit aligned addresses, we can use a 16 bit bus width */
++ else if (addr % 2 == 0)
++ return DMA_SLAVE_BUSWIDTH_2_BYTES;
++
++ /* Worst-case scenario, we need to do byte aligned reads */
++ return DMA_SLAVE_BUSWIDTH_1_BYTE;
++}
++
++static void sun4i_dma_free_chan_resources(struct dma_chan *chan)
++{
++ struct sun4i_dma_vchan *vchan = to_sun4i_dma_vchan(chan);
++
++ vchan_free_chan_resources(&vchan->vc);
++}
++
++static struct sun4i_dma_pchan *find_and_use_pchan(struct sun4i_dma_dev *priv,
++ struct sun4i_dma_vchan *vchan)
++{
++ struct sun4i_dma_pchan *pchan = NULL, *pchans = priv->pchans;
++ unsigned long flags;
++ int i, max;
++
++ /*
++ * pchans 0-NDMA_NR_MAX_CHANNELS are normal, and
++ * NDMA_NR_MAX_CHANNELS+ are dedicated ones
++ */
++ if (vchan->is_dedicated) {
++ i = NDMA_NR_MAX_CHANNELS;
++ max = DMA_NR_MAX_CHANNELS;
++ } else {
++ i = 0;
++ max = NDMA_NR_MAX_CHANNELS;
++ }
++
++ spin_lock_irqsave(&priv->lock, flags);
++ for_each_clear_bit_from(i, &priv->pchans_used, max) {
++ pchan = &pchans[i];
++ pchan->vchan = vchan;
++ set_bit(i, priv->pchans_used);
++ break;
++ }
++ spin_unlock_irqrestore(&priv->lock, flags);
++
++ return pchan;
++}
++
++static void release_pchan(struct sun4i_dma_dev *priv,
++ struct sun4i_dma_pchan *pchan)
++{
++ unsigned long flags;
++ int nr = pchan - priv->pchans;
++
++ spin_lock_irqsave(&priv->lock, flags);
++
++ pchan->vchan = NULL;
++ clear_bit(nr, priv->pchans_used);
++
++ spin_unlock_irqrestore(&priv->lock, flags);
++}
++
++static void configure_pchan(struct sun4i_dma_pchan *pchan,
++ struct sun4i_dma_promise *d)
++{
++ /*
++ * Configure addresses and misc parameters depending on type
++ * DDMA has an extra field with timing parameters
++ */
++ if (pchan->is_dedicated) {
++ writel_relaxed(d->src, pchan->base + DDMA_SRC_ADDR_REG);
++ writel_relaxed(d->dst, pchan->base + DDMA_DEST_ADDR_REG);
++ writel_relaxed(d->len, pchan->base + DDMA_BYTE_COUNT_REG);
++ writel_relaxed(d->para, pchan->base + DDMA_PARA_REG);
++ writel_relaxed(d->cfg, pchan->base + DDMA_CFG_REG);
++ } else {
++ writel_relaxed(d->src, pchan->base + NDMA_SRC_ADDR_REG);
++ writel_relaxed(d->dst, pchan->base + NDMA_DEST_ADDR_REG);
++ writel_relaxed(d->len, pchan->base + NDMA_BYTE_COUNT_REG);
++ writel_relaxed(d->cfg, pchan->base + NDMA_CFG_REG);
++ }
++}
++
++static void set_pchan_interrupt(struct sun4i_dma_dev *priv,
++ struct sun4i_dma_pchan *pchan,
++ int half, int end)
++{
++ u32 reg;
++ int pchan_number = pchan - priv->pchans;
++ unsigned long flags;
++
++ spin_lock_irqsave(&priv->lock, flags);
++
++ reg = readl_relaxed(priv->base + DMA_IRQ_ENABLE_REG);
++
++ if (half)
++ reg |= BIT(pchan_number * 2);
++ else
++ reg &= ~BIT(pchan_number * 2);
++
++ if (end)
++ reg |= BIT(pchan_number * 2 + 1);
++ else
++ reg &= ~BIT(pchan_number * 2 + 1);
++
++ writel_relaxed(reg, priv->base + DMA_IRQ_ENABLE_REG);
++
++ spin_unlock_irqrestore(&priv->lock, flags);
++}
++
++/**
++ * Execute pending operations on a vchan
++ *
++ * When given a vchan, this function will try to acquire a suitable
++ * pchan and, if successful, will configure it to fulfill a promise
++ * from the next pending contract.
++ *
++ * This function must be called with &vchan->vc.lock held.
++ */
++static int __execute_vchan_pending(struct sun4i_dma_dev *priv,
++ struct sun4i_dma_vchan *vchan)
++{
++ struct sun4i_dma_promise *promise = NULL;
++ struct sun4i_dma_contract *contract = NULL;
++ struct sun4i_dma_pchan *pchan;
++ struct virt_dma_desc *vd;
++ int ret;
++
++ lockdep_assert_held(&vchan->vc.lock);
++
++ /* We need a pchan to do anything, so secure one if available */
++ pchan = find_and_use_pchan(priv, vchan);
++ if (!pchan)
++ return -EBUSY;
++
++ /*
++ * Channel endpoints must not be repeated, so if this vchan
++ * has already submitted some work, we can't do anything else
++ */
++ if (vchan->processing) {
++ dev_dbg(chan2dev(&vchan->vc.chan),
++ "processing something to this endpoint already\n");
++ ret = -EBUSY;
++ goto release_pchan;
++ }
++
++ do {
++ /* Figure out which contract we're working with today */
++ vd = vchan_next_desc(&vchan->vc);
++ if (!vd) {
++ dev_dbg(chan2dev(&vchan->vc.chan),
++ "No pending contract found");
++ ret = 0;
++ goto release_pchan;
++ }
++
++ contract = to_sun4i_dma_contract(vd);
++ if (list_empty(&contract->demands)) {
++ /* The contract has been completed so mark it as such */
++ list_del(&contract->vd.node);
++ vchan_cookie_complete(&contract->vd);
++ dev_dbg(chan2dev(&vchan->vc.chan),
++ "Empty contract found and marked complete");
++ }
++ } while (list_empty(&contract->demands));
++
++ /* Now find out what we need to do */
++ promise = list_first_entry(&contract->demands,
++ struct sun4i_dma_promise, list);
++ vchan->processing = promise;
++
++ /* ... and make it reality */
++ if (promise) {
++ vchan->contract = contract;
++ vchan->pchan = pchan;
++ set_pchan_interrupt(priv, pchan, contract->is_cyclic, 1);
++ configure_pchan(pchan, promise);
++ }
++
++ return 0;
++
++release_pchan:
++ release_pchan(priv, pchan);
++ return ret;
++}
++
++/**
++ * Generate a promise, to be used in a normal DMA contract.
++ *
++ * A NDMA promise contains all the information required to program the
++ * normal part of the DMA Engine and get data copied. A non-executed
++ * promise will live in the demands list on a contract. Once it has been
++ * completed, it will be moved to the completed demands list for later freeing.
++ * All linked promises will be freed when the corresponding contract is freed
++ */
++static struct sun4i_dma_promise *
++generate_ndma_promise(struct dma_chan *chan, dma_addr_t src, dma_addr_t dest,
++ size_t len, struct dma_slave_config *sconfig)
++{
++ struct sun4i_dma_promise *promise;
++ int ret;
++
++ promise = kzalloc(sizeof(*promise), GFP_NOWAIT);
++ if (!promise)
++ return NULL;
++
++ promise->src = src;
++ promise->dst = dest;
++ promise->len = len;
++ promise->cfg = NDMA_CFG_LOADING | NDMA_CFG_BYTE_COUNT_MODE_REMAIN;
++
++ /* Use sensible default values if client is using undefined ones */
++ if (sconfig->src_addr_width == DMA_SLAVE_BUSWIDTH_UNDEFINED)
++ sconfig->src_addr_width = sconfig->dst_addr_width;
++ if (sconfig->dst_addr_width == DMA_SLAVE_BUSWIDTH_UNDEFINED)
++ sconfig->dst_addr_width = sconfig->src_addr_width;
++ if (sconfig->src_maxburst == 0)
++ sconfig->src_maxburst = sconfig->dst_maxburst;
++ if (sconfig->dst_maxburst == 0)
++ sconfig->dst_maxburst = sconfig->src_maxburst;
++
++ dev_dbg(chan2dev(chan),
++ "src burst %d, dst burst %d, src buswidth %d, dst buswidth %d",
++ sconfig->src_maxburst, sconfig->dst_maxburst,
++ sconfig->src_addr_width, sconfig->dst_addr_width);
++
++ /* Source burst */
++ ret = convert_burst(sconfig->src_maxburst);
++ if (IS_ERR_VALUE(ret))
++ goto fail;
++ promise->cfg |= NDMA_CFG_SRC_BURST_LENGTH(ret);
++
++ /* Destination burst */
++ ret = convert_burst(sconfig->dst_maxburst);
++ if (IS_ERR_VALUE(ret))
++ goto fail;
++ promise->cfg |= NDMA_CFG_DEST_BURST_LENGTH(ret);
++
++ /* Source bus width */
++ ret = convert_buswidth(sconfig->src_addr_width);
++ if (IS_ERR_VALUE(ret))
++ goto fail;
++ promise->cfg |= NDMA_CFG_SRC_DATA_WIDTH(ret);
++
++ /* Destination bus width */
++ ret = convert_buswidth(sconfig->dst_addr_width);
++ if (IS_ERR_VALUE(ret))
++ goto fail;
++ promise->cfg |= NDMA_CFG_DEST_DATA_WIDTH(ret);
++
++ return promise;
++
++fail:
++ kfree(promise);
++ return NULL;
++}
++
++/**
++ * Generate a promise, to be used in a dedicated DMA contract.
++ *
++ * A DDMA promise contains all the information required to program the
++ * Dedicated part of the DMA Engine and get data copied. A non-executed
++ * promise will live in the demands list on a contract. Once it has been
++ * completed, it will be moved to the completed demands list for later freeing.
++ * All linked promises will be freed when the corresponding contract is freed
++ */
++static struct sun4i_dma_promise *
++generate_ddma_promise(struct dma_chan *chan, dma_addr_t src, dma_addr_t dest,
++ size_t len, struct dma_slave_config *sconfig)
++{
++ struct sun4i_dma_promise *promise;
++ int ret;
++
++ promise = kzalloc(sizeof(*promise), GFP_NOWAIT);
++ if (!promise)
++ return NULL;
++
++ promise->src = src;
++ promise->dst = dest;
++ promise->len = len;
++ promise->cfg = DDMA_CFG_LOADING | DDMA_CFG_BYTE_COUNT_MODE_REMAIN;
++
++ /* Source burst */
++ ret = convert_burst(sconfig->src_maxburst);
++ if (IS_ERR_VALUE(ret))
++ goto fail;
++ promise->cfg |= DDMA_CFG_SRC_BURST_LENGTH(ret);
++
++ /* Destination burst */
++ ret = convert_burst(sconfig->dst_maxburst);
++ if (IS_ERR_VALUE(ret))
++ goto fail;
++ promise->cfg |= DDMA_CFG_DEST_BURST_LENGTH(ret);
++
++ /* Source bus width */
++ ret = convert_buswidth(sconfig->src_addr_width);
++ if (IS_ERR_VALUE(ret))
++ goto fail;
++ promise->cfg |= DDMA_CFG_SRC_DATA_WIDTH(ret);
++
++ /* Destination bus width */
++ ret = convert_buswidth(sconfig->dst_addr_width);
++ if (IS_ERR_VALUE(ret))
++ goto fail;
++ promise->cfg |= DDMA_CFG_DEST_DATA_WIDTH(ret);
++
++ return promise;
++
++fail:
++ kfree(promise);
++ return NULL;
++}
++
++/**
++ * Generate a contract
++ *
++ * Contracts function as DMA descriptors. As our hardware does not support
++ * linked lists, we need to implement SG via software. We use a contract
++ * to hold all the pieces of the request and process them serially one
++ * after another. Each piece is represented as a promise.
++ */
++static struct sun4i_dma_contract *generate_dma_contract(void)
++{
++ struct sun4i_dma_contract *contract;
++
++ contract = kzalloc(sizeof(*contract), GFP_NOWAIT);
++ if (!contract)
++ return NULL;
++
++ INIT_LIST_HEAD(&contract->demands);
++ INIT_LIST_HEAD(&contract->completed_demands);
++
++ return contract;
++}
++
++/**
++ * Get next promise on a cyclic transfer
++ *
++ * Cyclic contracts contain a series of promises which are executed on a
++ * loop. This function returns the next promise from a cyclic contract,
++ * so it can be programmed into the hardware.
++ */
++static struct sun4i_dma_promise *
++get_next_cyclic_promise(struct sun4i_dma_contract *contract)
++{
++ struct sun4i_dma_promise *promise;
++
++ promise = list_first_entry_or_null(&contract->demands,
++ struct sun4i_dma_promise, list);
++ if (!promise) {
++ list_splice_init(&contract->completed_demands,
++ &contract->demands);
++ promise = list_first_entry(&contract->demands,
++ struct sun4i_dma_promise, list);
++ }
++
++ return promise;
++}
++
++/**
++ * Free a contract and all its associated promises
++ */
++static void sun4i_dma_free_contract(struct virt_dma_desc *vd)
++{
++ struct sun4i_dma_contract *contract = to_sun4i_dma_contract(vd);
++ struct sun4i_dma_promise *promise;
++
++ /* Free all the demands and completed demands */
++ list_for_each_entry(promise, &contract->demands, list)
++ kfree(promise);
++
++ list_for_each_entry(promise, &contract->completed_demands, list)
++ kfree(promise);
++
++ kfree(contract);
++}
++
++static struct dma_async_tx_descriptor *
++sun4i_dma_prep_dma_memcpy(struct dma_chan *chan, dma_addr_t dest,
++ dma_addr_t src, size_t len, unsigned long flags)
++{
++ struct sun4i_dma_vchan *vchan = to_sun4i_dma_vchan(chan);
++ struct dma_slave_config *sconfig = &vchan->cfg;
++ struct sun4i_dma_promise *promise;
++ struct sun4i_dma_contract *contract;
++
++ contract = generate_dma_contract();
++ if (!contract)
++ return NULL;
++
++ /*
++ * We can only do the copy to bus aligned addresses, so
++ * choose the best one so we get decent performance. We also
++ * maximize the burst size for this same reason.
++ */
++ sconfig->src_addr_width = choose_optimal_buswidth(src);
++ sconfig->dst_addr_width = choose_optimal_buswidth(dest);
++ sconfig->src_maxburst = 8;
++ sconfig->dst_maxburst = 8;
++
++ if (vchan->is_dedicated)
++ promise = generate_ddma_promise(chan, src, dest, len, sconfig);
++ else
++ promise = generate_ndma_promise(chan, src, dest, len, sconfig);
++
++ if (!promise) {
++ kfree(contract);
++ return NULL;
++ }
++
++ /* Configure memcpy mode */
++ if (vchan->is_dedicated) {
++ promise->cfg |= DDMA_CFG_SRC_DRQ_TYPE(DDMA_DRQ_TYPE_SDRAM) |
++ DDMA_CFG_DEST_DRQ_TYPE(DDMA_DRQ_TYPE_SDRAM);
++ } else {
++ promise->cfg |= NDMA_CFG_SRC_DRQ_TYPE(NDMA_DRQ_TYPE_SDRAM) |
++ NDMA_CFG_DEST_DRQ_TYPE(NDMA_DRQ_TYPE_SDRAM);
++ }
++
++ /* Fill the contract with our only promise */
++ list_add_tail(&promise->list, &contract->demands);
++
++ /* And add it to the vchan */
++ return vchan_tx_prep(&vchan->vc, &contract->vd, flags);
++}
++
++static struct dma_async_tx_descriptor *
++sun4i_dma_prep_dma_cyclic(struct dma_chan *chan, dma_addr_t buf, size_t len,
++ size_t period_len, enum dma_transfer_direction dir,
++ unsigned long flags)
++{
++ struct sun4i_dma_vchan *vchan = to_sun4i_dma_vchan(chan);
++ struct dma_slave_config *sconfig = &vchan->cfg;
++ struct sun4i_dma_promise *promise;
++ struct sun4i_dma_contract *contract;
++ dma_addr_t src, dest;
++ u32 endpoints;
++ int nr_periods, offset, plength, i;
++
++ if (!is_slave_direction(dir)) {
++ dev_err(chan2dev(chan), "Invalid DMA direction\n");
++ return NULL;
++ }
++
++ if (vchan->is_dedicated) {
++ /*
++ * As we are using this just for audio data, we need to use
++ * normal DMA. There is nothing stopping us from supporting
++ * dedicated DMA here as well, so if a client comes up and
++ * requires it, it will be simple to implement it.
++ */
++ dev_err(chan2dev(chan),
++ "Cyclic transfers are only supported on Normal DMA\n");
++ return NULL;
++ }
++
++ contract = generate_dma_contract();
++ if (!contract)
++ return NULL;
++
++ contract->is_cyclic = 1;
++
++ /* Figure out the endpoints and the address we need */
++ if (dir == DMA_MEM_TO_DEV) {
++ src = buf;
++ dest = sconfig->dst_addr;
++ endpoints = NDMA_CFG_SRC_DRQ_TYPE(NDMA_DRQ_TYPE_SDRAM) |
++ NDMA_CFG_DEST_DRQ_TYPE(vchan->endpoint) |
++ NDMA_CFG_DEST_FIXED_ADDR;
++ } else {
++ src = sconfig->src_addr;
++ dest = buf;
++ endpoints = NDMA_CFG_SRC_DRQ_TYPE(vchan->endpoint) |
++ NDMA_CFG_SRC_FIXED_ADDR |
++ NDMA_CFG_DEST_DRQ_TYPE(NDMA_DRQ_TYPE_SDRAM);
++ }
++
++ /*
++ * We will be using half done interrupts to make two periods
++ * out of a promise, so we need to program the DMA engine less
++ * often
++ */
++ nr_periods = DIV_ROUND_UP(len / period_len, 2);
++ for (i = 0; i < nr_periods; i++) {
++ /* Calculate the offset in the buffer and the length needed */
++ offset = i * period_len * 2;
++ plength = min((len - offset), (period_len * 2));
++ if (dir == DMA_MEM_TO_DEV)
++ src = buf + offset;
++ else
++ dest = buf + offset;
++
++ /* Make the promise */
++ promise = generate_ndma_promise(chan, src, dest,
++ plength, sconfig);
++ if (!promise) {
++ /* TODO: should we free everything? */
++ return NULL;
++ }
++ promise->cfg |= endpoints;
++
++ /* Then add it to the contract */
++ list_add_tail(&promise->list, &contract->demands);
++ }
++
++ /* And add it to the vchan */
++ return vchan_tx_prep(&vchan->vc, &contract->vd, flags);
++}
++
++static struct dma_async_tx_descriptor *
++sun4i_dma_prep_slave_sg(struct dma_chan *chan, struct scatterlist *sgl,
++ unsigned int sg_len, enum dma_transfer_direction dir,
++ unsigned long flags, void *context)
++{
++ struct sun4i_dma_vchan *vchan = to_sun4i_dma_vchan(chan);
++ struct dma_slave_config *sconfig = &vchan->cfg;
++ struct sun4i_dma_promise *promise;
++ struct sun4i_dma_contract *contract;
++ struct scatterlist *sg;
++ dma_addr_t srcaddr, dstaddr;
++ u32 endpoints, para;
++ int i;
++
++ if (!sgl)
++ return NULL;
++
++ if (!is_slave_direction(dir)) {
++ dev_err(chan2dev(chan), "Invalid DMA direction\n");
++ return NULL;
++ }
++
++ contract = generate_dma_contract();
++ if (!contract)
++ return NULL;
++
++ /* Figure out endpoints */
++ if (vchan->is_dedicated && dir == DMA_MEM_TO_DEV) {
++ endpoints = DDMA_CFG_SRC_DRQ_TYPE(DDMA_DRQ_TYPE_SDRAM) |
++ DDMA_CFG_SRC_ADDR_MODE(DDMA_ADDR_MODE_LINEAR) |
++ DDMA_CFG_DEST_DRQ_TYPE(vchan->endpoint) |
++ DDMA_CFG_DEST_ADDR_MODE(DDMA_ADDR_MODE_IO);
++ } else if (!vchan->is_dedicated && dir == DMA_MEM_TO_DEV) {
++ endpoints = NDMA_CFG_SRC_DRQ_TYPE(NDMA_DRQ_TYPE_SDRAM) |
++ NDMA_CFG_DEST_DRQ_TYPE(vchan->endpoint) |
++ NDMA_CFG_DEST_FIXED_ADDR;
++ } else if (vchan->is_dedicated) {
++ endpoints = DDMA_CFG_SRC_DRQ_TYPE(vchan->endpoint) |
++ DDMA_CFG_SRC_ADDR_MODE(DDMA_ADDR_MODE_IO) |
++ DDMA_CFG_DEST_DRQ_TYPE(DDMA_DRQ_TYPE_SDRAM) |
++ DDMA_CFG_DEST_ADDR_MODE(DDMA_ADDR_MODE_LINEAR);
++ } else {
++ endpoints = NDMA_CFG_SRC_DRQ_TYPE(vchan->endpoint) |
++ NDMA_CFG_SRC_FIXED_ADDR |
++ NDMA_CFG_DEST_DRQ_TYPE(NDMA_DRQ_TYPE_SDRAM);
++ }
++
++ for_each_sg(sgl, sg, sg_len, i) {
++ /* Figure out addresses */
++ if (dir == DMA_MEM_TO_DEV) {
++ srcaddr = sg_dma_address(sg);
++ dstaddr = sconfig->dst_addr;
++ } else {
++ srcaddr = sconfig->src_addr;
++ dstaddr = sg_dma_address(sg);
++ }
++
++ /*
++ * These are the magic DMA engine timings that keep SPI going.
++ * I haven't seen any interface on DMAEngine to configure
++ * timings, and so far they seem to work for everything we
++ * support, so I've kept them here. I don't know if other
++ * devices need different timings because, as usual, we only
++ * have the "para" bitfield meanings, but no comment on what
++ * the values should be when doing a certain operation :|
++ */
++ para = DDMA_MAGIC_SPI_PARAMETERS;
++
++ /* And make a suitable promise */
++ if (vchan->is_dedicated)
++ promise = generate_ddma_promise(chan, srcaddr, dstaddr,
++ sg_dma_len(sg), sconfig);
++ else
++ promise = generate_ndma_promise(chan, srcaddr, dstaddr,
++ sg_dma_len(sg), sconfig);
++
++ if (!promise)
++ return NULL; /* TODO: should we free everything? */
++
++ promise->cfg |= endpoints;
++ promise->para = para;
++
++ /* Then add it to the contract */
++ list_add_tail(&promise->list, &contract->demands);
++ }
++
++ /*
++ * Once we've got all the promises ready, add the contract
++ * to the pending list on the vchan
++ */
++ return vchan_tx_prep(&vchan->vc, &contract->vd, flags);
++}
++
++static int sun4i_dma_terminate_all(struct dma_chan *chan)
++{
++ struct sun4i_dma_dev *priv = to_sun4i_dma_dev(chan->device);
++ struct sun4i_dma_vchan *vchan = to_sun4i_dma_vchan(chan);
++ struct sun4i_dma_pchan *pchan = vchan->pchan;
++ LIST_HEAD(head);
++ unsigned long flags;
++
++ spin_lock_irqsave(&vchan->vc.lock, flags);
++ vchan_get_all_descriptors(&vchan->vc, &head);
++ spin_unlock_irqrestore(&vchan->vc.lock, flags);
++
++ /*
++ * Clearing the configuration register will halt the pchan. Interrupts
++ * may still trigger, so don't forget to disable them.
++ */
++ if (pchan) {
++ if (pchan->is_dedicated)
++ writel(0, pchan->base + DDMA_CFG_REG);
++ else
++ writel(0, pchan->base + NDMA_CFG_REG);
++ set_pchan_interrupt(priv, pchan, 0, 0);
++ release_pchan(priv, pchan);
++ }
++
++ spin_lock_irqsave(&vchan->vc.lock, flags);
++ vchan_dma_desc_free_list(&vchan->vc, &head);
++ /* Clear these so the vchan is usable again */
++ vchan->processing = NULL;
++ vchan->pchan = NULL;
++ spin_unlock_irqrestore(&vchan->vc.lock, flags);
++
++ return 0;
++}
++
++static int sun4i_dma_config(struct dma_chan *chan,
++ struct dma_slave_config *config)
++{
++ struct sun4i_dma_vchan *vchan = to_sun4i_dma_vchan(chan);
++
++ memcpy(&vchan->cfg, config, sizeof(*config));
++
++ return 0;
++}
++
++static struct dma_chan *sun4i_dma_of_xlate(struct of_phandle_args *dma_spec,
++ struct of_dma *ofdma)
++{
++ struct sun4i_dma_dev *priv = ofdma->of_dma_data;
++ struct sun4i_dma_vchan *vchan;
++ struct dma_chan *chan;
++ u8 is_dedicated = dma_spec->args[0];
++ u8 endpoint = dma_spec->args[1];
++
++ /* Check if type is Normal or Dedicated */
++ if (is_dedicated != 0 && is_dedicated != 1)
++ return NULL;
++
++ /* Make sure the endpoint looks sane */
++ if ((is_dedicated && endpoint >= DDMA_DRQ_TYPE_LIMIT) ||
++ (!is_dedicated && endpoint >= NDMA_DRQ_TYPE_LIMIT))
++ return NULL;
++
++ chan = dma_get_any_slave_channel(&priv->slave);
++ if (!chan)
++ return NULL;
++
++ /* Assign the endpoint to the vchan */
++ vchan = to_sun4i_dma_vchan(chan);
++ vchan->is_dedicated = is_dedicated;
++ vchan->endpoint = endpoint;
++
++ return chan;
++}
++
++static enum dma_status sun4i_dma_tx_status(struct dma_chan *chan,
++ dma_cookie_t cookie,
++ struct dma_tx_state *state)
++{
++ struct sun4i_dma_vchan *vchan = to_sun4i_dma_vchan(chan);
++ struct sun4i_dma_pchan *pchan = vchan->pchan;
++ struct sun4i_dma_contract *contract;
++ struct sun4i_dma_promise *promise;
++ struct virt_dma_desc *vd;
++ unsigned long flags;
++ enum dma_status ret;
++ size_t bytes = 0;
++
++ ret = dma_cookie_status(chan, cookie, state);
++ if (ret == DMA_COMPLETE)
++ return ret;
++
++ spin_lock_irqsave(&vchan->vc.lock, flags);
++ vd = vchan_find_desc(&vchan->vc, cookie);
++ if (!vd)
++ goto exit;
++ contract = to_sun4i_dma_contract(vd);
++
++ list_for_each_entry(promise, &contract->demands, list)
++ bytes += promise->len;
++
++ /*
++ * The hardware is configured to return the remaining byte
++ * quantity. If possible, replace the first listed element's
++ * full size with the actual remaining amount
++ */
++ promise = list_first_entry_or_null(&contract->demands,
++ struct sun4i_dma_promise, list);
++ if (promise && pchan) {
++ bytes -= promise->len;
++ if (pchan->is_dedicated)
++ bytes += readl(pchan->base + DDMA_BYTE_COUNT_REG);
++ else
++ bytes += readl(pchan->base + NDMA_BYTE_COUNT_REG);
++ }
++
++exit:
++
++ dma_set_residue(state, bytes);
++ spin_unlock_irqrestore(&vchan->vc.lock, flags);
++
++ return ret;
++}
++
++static void sun4i_dma_issue_pending(struct dma_chan *chan)
++{
++ struct sun4i_dma_dev *priv = to_sun4i_dma_dev(chan->device);
++ struct sun4i_dma_vchan *vchan = to_sun4i_dma_vchan(chan);
++ unsigned long flags;
++
++ spin_lock_irqsave(&vchan->vc.lock, flags);
++
++ /*
++ * If there are pending transactions for this vchan, push one of
++ * them into the engine to get the ball rolling.
++ */
++ if (vchan_issue_pending(&vchan->vc))
++ __execute_vchan_pending(priv, vchan);
++
++ spin_unlock_irqrestore(&vchan->vc.lock, flags);
++}
++
++static irqreturn_t sun4i_dma_interrupt(int irq, void *dev_id)
++{
++ struct sun4i_dma_dev *priv = dev_id;
++ struct sun4i_dma_pchan *pchans = priv->pchans, *pchan;
++ struct sun4i_dma_vchan *vchan;
++ struct sun4i_dma_contract *contract;
++ struct sun4i_dma_promise *promise;
++ unsigned long pendirq, irqs, disableirqs;
++ int bit, i, free_room, allow_mitigation = 1;
++
++ pendirq = readl_relaxed(priv->base + DMA_IRQ_PENDING_STATUS_REG);
++
++handle_pending:
++
++ disableirqs = 0;
++ free_room = 0;
++
++ for_each_set_bit(bit, &pendirq, 32) {
++ pchan = &pchans[bit >> 1];
++ vchan = pchan->vchan;
++ if (!vchan) /* a terminated channel may still interrupt */
++ continue;
++ contract = vchan->contract;
++
++ /*
++ * Disable the IRQ and free the pchan if it's an end
++ * interrupt (odd bit)
++ */
++ if (bit & 1) {
++ spin_lock(&vchan->vc.lock);
++
++ /*
++ * Move the promise into the completed list now that
++ * we're done with it
++ */
++ list_del(&vchan->processing->list);
++ list_add_tail(&vchan->processing->list,
++ &contract->completed_demands);
++
++ /*
++ * Cyclic DMA transfers are special:
++ * - There's always something we can dispatch
++ * - We need to run the callback
++ * - Latency is very important, as this is used by audio
++ * We therefore just cycle through the list and dispatch
++ * whatever we have here, reusing the pchan. There's
++ * no need to run the thread after this.
++ *
++ * For non-cyclic transfers we need to look around,
++ * so we can program some more work, or notify the
++ * client that their transfers have been completed.
++ */
++ if (contract->is_cyclic) {
++ promise = get_next_cyclic_promise(contract);
++ vchan->processing = promise;
++ configure_pchan(pchan, promise);
++ vchan_cyclic_callback(&contract->vd);
++ } else {
++ vchan->processing = NULL;
++ vchan->pchan = NULL;
++
++ free_room = 1;
++ disableirqs |= BIT(bit);
++ release_pchan(priv, pchan);
++ }
++
++ spin_unlock(&vchan->vc.lock);
++ } else {
++ /* Half done interrupt */
++ if (contract->is_cyclic)
++ vchan_cyclic_callback(&contract->vd);
++ else
++ disableirqs |= BIT(bit);
++ }
++ }
++
++ /* Disable the IRQs for events we handled */
++ spin_lock(&priv->lock);
++ irqs = readl_relaxed(priv->base + DMA_IRQ_ENABLE_REG);
++ writel_relaxed(irqs & ~disableirqs, priv->base + DMA_IRQ_ENABLE_REG);
++ spin_unlock(&priv->lock);
++
++ /* Writing 1 to the pending field will clear the pending interrupt */
++ writel_relaxed(pendirq, priv->base + DMA_IRQ_PENDING_STATUS_REG);
++
++ /*
++ * If a pchan was freed, we may be able to schedule something else,
++ * so have a look around
++ */
++ if (free_room) {
++ for (i = 0; i < DMA_NR_MAX_VCHANS; i++) {
++ vchan = &priv->vchans[i];
++ spin_lock(&vchan->vc.lock);
++ __execute_vchan_pending(priv, vchan);
++ spin_unlock(&vchan->vc.lock);
++ }
++ }
++
++ /*
++ * Handle newer interrupts if some showed up, but only do it once
++ * to avoid a too long a loop
++ */
++ if (allow_mitigation) {
++ pendirq = readl_relaxed(priv->base + DMA_IRQ_PENDING_STATUS_REG);
++ if (pendirq) {
++ allow_mitigation = 0;
++ goto handle_pending;
++ }
++ }
++
++ return IRQ_HANDLED;
++}
++
++static int sun4i_dma_probe(struct platform_device *pdev)
++{
++ struct sun4i_dma_dev *priv;
++ struct resource *res;
++ int i, j, ret;
++
++ priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL);
++ if (!priv)
++ return -ENOMEM;
++
++ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
++ priv->base = devm_ioremap_resource(&pdev->dev, res);
++ if (IS_ERR(priv->base))
++ return PTR_ERR(priv->base);
++
++ priv->irq = platform_get_irq(pdev, 0);
++ if (priv->irq < 0) {
++ dev_err(&pdev->dev, "Cannot claim IRQ\n");
++ return priv->irq;
++ }
++
++ priv->clk = devm_clk_get(&pdev->dev, NULL);
++ if (IS_ERR(priv->clk)) {
++ dev_err(&pdev->dev, "No clock specified\n");
++ return PTR_ERR(priv->clk);
++ }
++
++ platform_set_drvdata(pdev, priv);
++ spin_lock_init(&priv->lock);
++
++ dma_cap_zero(priv->slave.cap_mask);
++ dma_cap_set(DMA_PRIVATE, priv->slave.cap_mask);
++ dma_cap_set(DMA_MEMCPY, priv->slave.cap_mask);
++ dma_cap_set(DMA_CYCLIC, priv->slave.cap_mask);
++ dma_cap_set(DMA_SLAVE, priv->slave.cap_mask);
++
++ INIT_LIST_HEAD(&priv->slave.channels);
++ priv->slave.device_free_chan_resources = sun4i_dma_free_chan_resources;
++ priv->slave.device_tx_status = sun4i_dma_tx_status;
++ priv->slave.device_issue_pending = sun4i_dma_issue_pending;
++ priv->slave.device_prep_slave_sg = sun4i_dma_prep_slave_sg;
++ priv->slave.device_prep_dma_memcpy = sun4i_dma_prep_dma_memcpy;
++ priv->slave.device_prep_dma_cyclic = sun4i_dma_prep_dma_cyclic;
++ priv->slave.device_config = sun4i_dma_config;
++ priv->slave.device_terminate_all = sun4i_dma_terminate_all;
++ priv->slave.copy_align = DMA_SLAVE_BUSWIDTH_4_BYTES;
++ priv->slave.src_addr_widths = BIT(DMA_SLAVE_BUSWIDTH_1_BYTE) |
++ BIT(DMA_SLAVE_BUSWIDTH_2_BYTES) |
++ BIT(DMA_SLAVE_BUSWIDTH_4_BYTES);
++ priv->slave.dst_addr_widths = BIT(DMA_SLAVE_BUSWIDTH_1_BYTE) |
++ BIT(DMA_SLAVE_BUSWIDTH_2_BYTES) |
++ BIT(DMA_SLAVE_BUSWIDTH_4_BYTES);
++ priv->slave.directions = BIT(DMA_DEV_TO_MEM) |
++ BIT(DMA_MEM_TO_DEV);
++ priv->slave.residue_granularity = DMA_RESIDUE_GRANULARITY_BURST;
++
++ priv->slave.dev = &pdev->dev;
++
++ priv->pchans = devm_kcalloc(&pdev->dev, DMA_NR_MAX_CHANNELS,
++ sizeof(struct sun4i_dma_pchan), GFP_KERNEL);
++ priv->vchans = devm_kcalloc(&pdev->dev, DMA_NR_MAX_VCHANS,
++ sizeof(struct sun4i_dma_vchan), GFP_KERNEL);
++ if (!priv->vchans || !priv->pchans)
++ return -ENOMEM;
++
++ /*
++ * [0..NDMA_NR_MAX_CHANNELS) are normal pchans, and
++ * [NDMA_NR_MAX_CHANNELS..DMA_NR_MAX_CHANNELS) are dedicated ones
++ */
++ for (i = 0; i < NDMA_NR_MAX_CHANNELS; i++)
++ priv->pchans[i].base = priv->base + NDMA_CHANNEL_REG_BASE(i);
++
++ for (j = 0; i < DMA_NR_MAX_CHANNELS; i++, j++) {
++ priv->pchans[i].base = priv->base + DDMA_CHANNEL_REG_BASE(j);
++ priv->pchans[i].is_dedicated = 1;
++ }
++
++ for (i = 0; i < DMA_NR_MAX_VCHANS; i++) {
++ struct sun4i_dma_vchan *vchan = &priv->vchans[i];
++
++ spin_lock_init(&vchan->vc.lock);
++ vchan->vc.desc_free = sun4i_dma_free_contract;
++ vchan_init(&vchan->vc, &priv->slave);
++ }
++
++ ret = clk_prepare_enable(priv->clk);
++ if (ret) {
++ dev_err(&pdev->dev, "Couldn't enable the clock\n");
++ return ret;
++ }
++
++ /*
++ * Make sure the IRQs are all disabled and accounted for. The bootloader
++ * likes to leave these dirty
++ */
++ writel(0, priv->base + DMA_IRQ_ENABLE_REG);
++ writel(0xFFFFFFFF, priv->base + DMA_IRQ_PENDING_STATUS_REG);
++
++ ret = devm_request_irq(&pdev->dev, priv->irq, sun4i_dma_interrupt,
++ 0, dev_name(&pdev->dev), priv);
++ if (ret) {
++ dev_err(&pdev->dev, "Cannot request IRQ\n");
++ goto err_clk_disable;
++ }
++
++ ret = dma_async_device_register(&priv->slave);
++ if (ret) {
++ dev_warn(&pdev->dev, "Failed to register DMA engine device\n");
++ goto err_clk_disable;
++ }
++
++ ret = of_dma_controller_register(pdev->dev.of_node, sun4i_dma_of_xlate,
++ priv);
++ if (ret) {
++ dev_err(&pdev->dev, "of_dma_controller_register failed\n");
++ goto err_dma_unregister;
++ }
++
++ dev_dbg(&pdev->dev, "Successfully probed SUN4I_DMA\n");
++
++ return 0;
++
++err_dma_unregister:
++ dma_async_device_unregister(&priv->slave);
++err_clk_disable:
++ clk_disable_unprepare(priv->clk);
++ return ret;
++}
++
++static int sun4i_dma_remove(struct platform_device *pdev)
++{
++ struct sun4i_dma_dev *priv = platform_get_drvdata(pdev);
++
++ /* Disable IRQ so no more work is scheduled */
++ disable_irq(priv->irq);
++
++ of_dma_controller_free(pdev->dev.of_node);
++ dma_async_device_unregister(&priv->slave);
++
++ clk_disable_unprepare(priv->clk);
++
++ return 0;
++}
++
++static struct of_device_id sun4i_dma_match[] = {
++ { .compatible = "allwinner,sun4i-a10-dma" },
++ { /* sentinel */ },
++};
++
++static struct platform_driver sun4i_dma_driver = {
++ .probe = sun4i_dma_probe,
++ .remove = sun4i_dma_remove,
++ .driver = {
++ .name = "sun4i-dma",
++ .of_match_table = sun4i_dma_match,
++ },
++};
++
++module_platform_driver(sun4i_dma_driver);
++
++MODULE_DESCRIPTION("Allwinner A10 Dedicated DMA Controller Driver");
++MODULE_AUTHOR("Emilio López <emilio@elopez.com.ar>");
++MODULE_LICENSE("GPL");
--- /dev/null
+From ea6871c5b3a934d0bfe08082e95c3b952f93ef39 Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Emilio=20L=C3=B3pez?= <emilio@elopez.com.ar>
+Date: Fri, 18 Jul 2014 15:48:35 -0300
+Subject: [PATCH] clk: sunxi: PLL2 support for sun4i, sun5i and sun7i
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+This patch adds support for PLL2 and derivates on A10 revision B and
+higher, as well as on sun5i and sun7i SoCs. As this PLL is only used for
+audio and requires good accuracy, we only support two known good rates.
+
+Signed-off-by: Emilio López <emilio@elopez.com.ar>
+Signed-off-by: Hans de Goede <hdegoede@redhat.com>
+---
+ drivers/clk/sunxi/Makefile | 1 +
+ drivers/clk/sunxi/clk-a10-pll2.c | 249 +++++++++++++++++++++++++++++++++++++++
+ 2 files changed, 250 insertions(+)
+ create mode 100644 drivers/clk/sunxi/clk-a10-pll2.c
+
+diff --git a/drivers/clk/sunxi/Makefile b/drivers/clk/sunxi/Makefile
+index 058f273..eb36c38 100644
+--- a/drivers/clk/sunxi/Makefile
++++ b/drivers/clk/sunxi/Makefile
+@@ -4,6 +4,7 @@
+
+ obj-y += clk-sunxi.o clk-factors.o
+ obj-y += clk-a10-hosc.o
++obj-y += clk-a10-pll2.o
+ obj-y += clk-a20-gmac.o
+ obj-y += clk-mod0.o
+ obj-y += clk-sun8i-mbus.o
+diff --git a/drivers/clk/sunxi/clk-a10-pll2.c b/drivers/clk/sunxi/clk-a10-pll2.c
+new file mode 100644
+index 0000000..bdbf1e9
+--- /dev/null
++++ b/drivers/clk/sunxi/clk-a10-pll2.c
+@@ -0,0 +1,249 @@
++/*
++ * Copyright 2013 Emilio López
++ *
++ * Emilio López <emilio@elopez.com.ar>
++ *
++ * This program is free software; you can redistribute it and/or modify
++ * it under the terms of the GNU General Public License as published by
++ * the Free Software Foundation; either version 2 of the License, or
++ * (at your option) any later version.
++ *
++ * This program is distributed in the hope that it will be useful,
++ * but WITHOUT ANY WARRANTY; without even the implied warranty of
++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
++ * GNU General Public License for more details.
++ */
++
++#include <linux/clk-provider.h>
++#include <linux/of.h>
++#include <linux/of_address.h>
++#include <linux/slab.h>
++
++#define SUN4I_PLL2_ENABLE 31
++#define SUN4I_PLL2_POST_DIV 26
++#define SUN4I_PLL2_POST_DIV_MASK 0xF
++#define SUN4I_PLL2_N 8
++#define SUN4I_PLL2_N_MASK 0x7F
++#define SUN4I_PLL2_PRE_DIV 0
++#define SUN4I_PLL2_PRE_DIV_MASK 0x1F
++
++#define SUN4I_PLL2_OUTPUTS 4
++
++struct sun4i_pll2_clk {
++ struct clk_hw hw;
++ void __iomem *reg;
++};
++
++static inline struct sun4i_pll2_clk *to_sun4i_pll2_clk(struct clk_hw *hw)
++{
++ return container_of(hw, struct sun4i_pll2_clk, hw);
++}
++
++static unsigned long sun4i_pll2_1x_recalc_rate(struct clk_hw *hw,
++ unsigned long parent_rate)
++{
++ struct sun4i_pll2_clk *clk = to_sun4i_pll2_clk(hw);
++ int n, prediv, postdiv;
++
++ u32 val = readl(clk->reg);
++ n = (val >> SUN4I_PLL2_N) & SUN4I_PLL2_N_MASK;
++ prediv = (val >> SUN4I_PLL2_PRE_DIV) & SUN4I_PLL2_PRE_DIV_MASK;
++ postdiv = (val >> SUN4I_PLL2_POST_DIV) & SUN4I_PLL2_POST_DIV_MASK;
++
++ /* 0 is a special case and means 1 */
++ if (n == 0)
++ n = 1;
++ if (prediv == 0)
++ prediv = 1;
++ if (postdiv == 0)
++ postdiv = 1;
++
++ return ((parent_rate * n) / prediv) / postdiv;
++}
++
++static unsigned long sun4i_pll2_8x_recalc_rate(struct clk_hw *hw,
++ unsigned long parent_rate)
++{
++ struct sun4i_pll2_clk *clk = to_sun4i_pll2_clk(hw);
++ int n, prediv;
++
++ u32 val = readl(clk->reg);
++ n = (val >> SUN4I_PLL2_N) & SUN4I_PLL2_N_MASK;
++ prediv = (val >> SUN4I_PLL2_PRE_DIV) & SUN4I_PLL2_PRE_DIV_MASK;
++
++ /* 0 is a special case and means 1 */
++ if (n == 0)
++ n = 1;
++ if (prediv == 0)
++ prediv = 1;
++
++ return ((parent_rate * 2 * n) / prediv);
++}
++
++static unsigned long sun4i_pll2_4x_recalc_rate(struct clk_hw *hw,
++ unsigned long parent_rate)
++{
++ return sun4i_pll2_8x_recalc_rate(hw, parent_rate / 2);
++}
++
++static unsigned long sun4i_pll2_2x_recalc_rate(struct clk_hw *hw,
++ unsigned long parent_rate)
++{
++ return sun4i_pll2_8x_recalc_rate(hw, parent_rate / 4);
++}
++
++static long sun4i_pll2_1x_round_rate(struct clk_hw *hw, unsigned long rate,
++ unsigned long *parent_rate)
++{
++ /*
++ * There is only two interesting rates for the audio PLL, the
++ * rest isn't really usable due to accuracy concerns. Therefore,
++ * we specifically round to those rates here
++ */
++ if (rate < 22579200)
++ return -EINVAL;
++
++ if (rate >= 22579200 && rate < 24576000)
++ return 22579200;
++
++ return 24576000;
++}
++
++static long sun4i_pll2_8x_round_rate(struct clk_hw *hw, unsigned long rate,
++ unsigned long *parent_rate)
++{
++ /*
++ * We should account for the postdiv that we're undoing on PLL2x8,
++ * which is always 4 in the usable configurations. The division
++ * by two is done because PLL2x8 also doubles the rate
++ */
++ *parent_rate = (rate * 4) / 2;
++
++ return rate;
++}
++
++static long sun4i_pll2_4x_round_rate(struct clk_hw *hw, unsigned long rate,
++ unsigned long *parent_rate)
++{
++ /* PLL2x4 * 2 = PLL2x8 */
++ return sun4i_pll2_8x_round_rate(hw, rate * 2, parent_rate);
++}
++
++static long sun4i_pll2_2x_round_rate(struct clk_hw *hw, unsigned long rate,
++ unsigned long *parent_rate)
++{
++ /* PLL2x2 * 4 = PLL2x8 */
++ return sun4i_pll2_8x_round_rate(hw, rate * 4, parent_rate);
++}
++
++static int sun4i_pll2_set_rate(struct clk_hw *hw, unsigned long rate,
++ unsigned long parent_rate)
++{
++ struct sun4i_pll2_clk *clk = to_sun4i_pll2_clk(hw);
++ u32 val = readl(clk->reg);
++
++ val &= ~(SUN4I_PLL2_N_MASK << SUN4I_PLL2_N);
++ val &= ~(SUN4I_PLL2_PRE_DIV_MASK << SUN4I_PLL2_PRE_DIV);
++ val &= ~(SUN4I_PLL2_POST_DIV_MASK << SUN4I_PLL2_POST_DIV);
++
++ val |= (21 << SUN4I_PLL2_PRE_DIV) | (4 << SUN4I_PLL2_POST_DIV);
++
++ if (rate == 22579200)
++ val |= (79 << SUN4I_PLL2_N);
++ else if (rate == 24576000)
++ val |= (86 << SUN4I_PLL2_N);
++ else
++ return -EINVAL;
++
++ writel(val, clk->reg);
++
++ return 0;
++}
++
++static struct clk_ops sun4i_pll2_ops_1x = {
++ .recalc_rate = sun4i_pll2_1x_recalc_rate,
++ .round_rate = sun4i_pll2_1x_round_rate,
++ .set_rate = sun4i_pll2_set_rate,
++};
++
++static struct clk_ops sun4i_pll2_ops_2x = {
++ .recalc_rate = sun4i_pll2_2x_recalc_rate,
++ .round_rate = sun4i_pll2_2x_round_rate,
++};
++
++static struct clk_ops sun4i_pll2_ops_4x = {
++ .recalc_rate = sun4i_pll2_4x_recalc_rate,
++ .round_rate = sun4i_pll2_4x_round_rate,
++};
++
++static struct clk_ops sun4i_pll2_ops_8x = {
++ .recalc_rate = sun4i_pll2_8x_recalc_rate,
++ .round_rate = sun4i_pll2_8x_round_rate,
++};
++
++static void __init sun4i_pll2_setup(struct device_node *np)
++{
++ const char *clk_name = np->name, *parent;
++ struct clk_onecell_data *clk_data;
++ struct sun4i_pll2_clk *pll2;
++ struct clk_gate *gate;
++ struct clk **clks;
++ void __iomem *reg;
++
++ pll2 = kzalloc(sizeof(*pll2), GFP_KERNEL);
++ gate = kzalloc(sizeof(*gate), GFP_KERNEL);
++ clk_data = kzalloc(sizeof(*clk_data), GFP_KERNEL);
++ clks = kcalloc(SUN4I_PLL2_OUTPUTS, sizeof(struct clk *), GFP_KERNEL);
++ if (!pll2 || !gate || !clk_data || !clks)
++ goto free_mem;
++
++ reg = of_iomap(np, 0);
++ parent = of_clk_get_parent_name(np, 0);
++ of_property_read_string_index(np, "clock-output-names", 0, &clk_name);
++
++ pll2->reg = reg;
++ gate->reg = reg;
++ gate->bit_idx = SUN4I_PLL2_ENABLE;
++
++ /* PLL2, also known as PLL2x1 */
++ of_property_read_string_index(np, "clock-output-names", 0, &clk_name);
++ clks[0] = clk_register_composite(NULL, clk_name, &parent, 1, NULL, NULL,
++ &pll2->hw, &sun4i_pll2_ops_1x,
++ &gate->hw, &clk_gate_ops, 0);
++ WARN_ON(IS_ERR(clks[0]));
++ parent = clk_name;
++
++ /* PLL2x2, 1/4 the rate of PLL2x8 */
++ of_property_read_string_index(np, "clock-output-names", 1, &clk_name);
++ clks[1] = clk_register_composite(NULL, clk_name, &parent, 1, NULL, NULL,
++ &pll2->hw, &sun4i_pll2_ops_2x,
++ NULL, NULL, CLK_SET_RATE_PARENT);
++ WARN_ON(IS_ERR(clks[1]));
++
++ /* PLL2x4, 1/2 the rate of PLL2x8 */
++ of_property_read_string_index(np, "clock-output-names", 2, &clk_name);
++ clks[2] = clk_register_composite(NULL, clk_name, &parent, 1, NULL, NULL,
++ &pll2->hw, &sun4i_pll2_ops_4x,
++ NULL, NULL, CLK_SET_RATE_PARENT);
++ WARN_ON(IS_ERR(clks[2]));
++
++ /* PLL2x8, double of PLL2 without the post divisor */
++ of_property_read_string_index(np, "clock-output-names", 3, &clk_name);
++ clks[3] = clk_register_composite(NULL, clk_name, &parent, 1, NULL, NULL,
++ &pll2->hw, &sun4i_pll2_ops_8x,
++ NULL, NULL, CLK_SET_RATE_PARENT);
++ WARN_ON(IS_ERR(clks[3]));
++
++ clk_data->clks = clks;
++ clk_data->clk_num = SUN4I_PLL2_OUTPUTS;
++ of_clk_add_provider(np, of_clk_src_onecell_get, clk_data);
++
++ return;
++
++free_mem:
++ kfree(pll2);
++ kfree(gate);
++ kfree(clk_data);
++ kfree(clks);
++}
++CLK_OF_DECLARE(sun4i_pll2, "allwinner,sun4i-a10-b-pll2-clk", sun4i_pll2_setup);
--- /dev/null
+From 9b95732096c11d84bd0082aed0d575d8c09e3ab6 Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Emilio=20L=C3=B3pez?= <emilio@elopez.com.ar>
+Date: Fri, 18 Jul 2014 15:49:37 -0300
+Subject: [PATCH] clk: sunxi: codec clock support
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+The codec clock on sun4i, sun5i and sun7i is a simple gate with PLL2 as
+parent.
+
+Signed-off-by: Emilio López <emilio@elopez.com.ar>
+Signed-off-by: Hans de Goede <hdegoede@redhat.com>
+---
+ drivers/clk/sunxi/Makefile | 1 +
+ drivers/clk/sunxi/clk-a10-codec.c | 41 +++++++++++++++++++++++++++++++++++++++
+ 2 files changed, 42 insertions(+)
+ create mode 100644 drivers/clk/sunxi/clk-a10-codec.c
+
+diff --git a/drivers/clk/sunxi/Makefile b/drivers/clk/sunxi/Makefile
+index eb36c38..6fa845e 100644
+--- a/drivers/clk/sunxi/Makefile
++++ b/drivers/clk/sunxi/Makefile
+@@ -3,6 +3,7 @@
+ #
+
+ obj-y += clk-sunxi.o clk-factors.o
++obj-y += clk-a10-codec.o
+ obj-y += clk-a10-hosc.o
+ obj-y += clk-a10-pll2.o
+ obj-y += clk-a20-gmac.o
+diff --git a/drivers/clk/sunxi/clk-a10-codec.c b/drivers/clk/sunxi/clk-a10-codec.c
+new file mode 100644
+index 0000000..c70acbf
+--- /dev/null
++++ b/drivers/clk/sunxi/clk-a10-codec.c
+@@ -0,0 +1,41 @@
++/*
++ * Copyright 2013 Emilio López
++ *
++ * Emilio López <emilio@elopez.com.ar>
++ *
++ * This program is free software; you can redistribute it and/or modify
++ * it under the terms of the GNU General Public License as published by
++ * the Free Software Foundation; either version 2 of the License, or
++ * (at your option) any later version.
++ *
++ * This program is distributed in the hope that it will be useful,
++ * but WITHOUT ANY WARRANTY; without even the implied warranty of
++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
++ * GNU General Public License for more details.
++ */
++
++#include <linux/clk-provider.h>
++#include <linux/clkdev.h>
++#include <linux/of.h>
++#include <linux/of_address.h>
++
++#define SUN4I_CODEC_GATE 31
++
++static void __init sun4i_codec_clk_setup(struct device_node *node)
++{
++ struct clk *clk;
++ const char *clk_name = node->name, *parent_name;
++ void __iomem *reg;
++
++ of_property_read_string(node, "clock-output-names", &clk_name);
++ parent_name = of_clk_get_parent_name(node, 0);
++ reg = of_iomap(node, 0);
++
++ clk = clk_register_gate(NULL, clk_name, parent_name,
++ CLK_SET_RATE_PARENT, reg,
++ SUN4I_CODEC_GATE, 0, NULL);
++
++ if (!IS_ERR(clk))
++ of_clk_add_provider(node, of_clk_src_simple_get, clk);
++}
++CLK_OF_DECLARE(sun4i_codec, "allwinner,sun4i-a10-codec-clk", sun4i_codec_clk_setup);
--- /dev/null
+From 7fbbca069587b7f467e76f583ad640977de1a4ff Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Emilio=20L=C3=B3pez?= <emilio@elopez.com.ar>
+Date: Fri, 18 Jul 2014 15:28:02 -0300
+Subject: [PATCH] clk: sunxi: mod1 clock support
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+The module 1 type of clocks consist of a gate and a mux and are used on
+the audio blocks to mux and gate the PLL2 outputs for AC97, IIS or
+SPDIF. This commit adds support for them on the sunxi clock driver.
+
+Signed-off-by: Emilio López <emilio@elopez.com.ar>
+Signed-off-by: Hans de Goede <hdegoede@redhat.com>
+---
+ drivers/clk/sunxi/Makefile | 1 +
+ drivers/clk/sunxi/clk-a10-mod1.c | 69 ++++++++++++++++++++++++++++++++++++++++
+ 2 files changed, 70 insertions(+)
+ create mode 100644 drivers/clk/sunxi/clk-a10-mod1.c
+
+diff --git a/drivers/clk/sunxi/Makefile b/drivers/clk/sunxi/Makefile
+index 6fa845e..960eeab 100644
+--- a/drivers/clk/sunxi/Makefile
++++ b/drivers/clk/sunxi/Makefile
+@@ -5,6 +5,7 @@
+ obj-y += clk-sunxi.o clk-factors.o
+ obj-y += clk-a10-codec.o
+ obj-y += clk-a10-hosc.o
++obj-y += clk-a10-mod1.o
+ obj-y += clk-a10-pll2.o
+ obj-y += clk-a20-gmac.o
+ obj-y += clk-mod0.o
+diff --git a/drivers/clk/sunxi/clk-a10-mod1.c b/drivers/clk/sunxi/clk-a10-mod1.c
+new file mode 100644
+index 0000000..1357641
+--- /dev/null
++++ b/drivers/clk/sunxi/clk-a10-mod1.c
+@@ -0,0 +1,69 @@
++/*
++ * Copyright 2013 Emilio López
++ *
++ * Emilio López <emilio@elopez.com.ar>
++ *
++ * This program is free software; you can redistribute it and/or modify
++ * it under the terms of the GNU General Public License as published by
++ * the Free Software Foundation; either version 2 of the License, or
++ * (at your option) any later version.
++ *
++ * This program is distributed in the hope that it will be useful,
++ * but WITHOUT ANY WARRANTY; without even the implied warranty of
++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
++ * GNU General Public License for more details.
++ */
++
++#include <linux/clk-provider.h>
++#include <linux/clkdev.h>
++#include <linux/of.h>
++#include <linux/of_address.h>
++
++static DEFINE_SPINLOCK(mod1_lock);
++
++#define SUN4I_MOD1_ENABLE 31
++#define SUN4I_MOD1_MUX 16
++#define SUN4I_MOD1_MUX_WIDTH 2
++#define SUN4I_MOD1_MAX_PARENTS 4
++
++static void __init sun4i_mod1_clk_setup(struct device_node *node)
++{
++ struct clk *clk;
++ struct clk_mux *mux;
++ struct clk_gate *gate;
++ const char *parents[4];
++ const char *clk_name = node->name;
++ void __iomem *reg;
++ int i = 0;
++
++ mux = kzalloc(sizeof(*mux), GFP_KERNEL);
++ gate = kzalloc(sizeof(*gate), GFP_KERNEL);
++ if (!mux || !gate) {
++ kfree(mux);
++ kfree(gate);
++ return;
++ }
++
++ of_property_read_string(node, "clock-output-names", &clk_name);
++ reg = of_iomap(node, 0);
++
++ while (i < SUN4I_MOD1_MAX_PARENTS &&
++ (parents[i] = of_clk_get_parent_name(node, i)) != NULL)
++ i++;
++
++ gate->reg = reg;
++ gate->bit_idx = SUN4I_MOD1_ENABLE;
++ gate->lock = &mod1_lock;
++ mux->reg = reg;
++ mux->shift = SUN4I_MOD1_MUX;
++ mux->mask = BIT(SUN4I_MOD1_MUX_WIDTH) - 1;
++ mux->lock = &mod1_lock;
++
++ clk = clk_register_composite(NULL, clk_name, parents, i,
++ &mux->hw, &clk_mux_ops,
++ NULL, NULL,
++ &gate->hw, &clk_gate_ops, 0);
++ if (!IS_ERR(clk))
++ of_clk_add_provider(node, of_clk_src_simple_get, clk);
++}
++CLK_OF_DECLARE(sun4i_mod1, "allwinner,sun4i-a10-mod1-clk", sun4i_mod1_clk_setup);
--- /dev/null
+From 32bb743195e1e48c48fc5cefd7c6ecdce56046a3 Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Emilio=20L=C3=B3pez?= <emilio@elopez.com.ar>
+Date: Fri, 18 Jul 2014 15:58:44 -0300
+Subject: [PATCH] ARM: sunxi: Add PLL2 support
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+This commit adds the PLL2 definition to the sun4i, sun5i and sun7i
+device trees. PLL2 is used to clock audio devices.
+
+Signed-off-by: Emilio López <emilio@elopez.com.ar>
+Signed-off-by: Hans de Goede <hdegoede@redhat.com>
+---
+ arch/arm/boot/dts/sun4i-a10.dtsi | 8 ++++++++
+ arch/arm/boot/dts/sun5i.dtsi | 8 ++++++++
+ arch/arm/boot/dts/sun7i-a20.dtsi | 8 ++++++++
+ 3 files changed, 24 insertions(+)
+
+diff --git a/arch/arm/boot/dts/sun4i-a10.dtsi b/arch/arm/boot/dts/sun4i-a10.dtsi
+index 30f663a..fab13af 100644
+--- a/arch/arm/boot/dts/sun4i-a10.dtsi
++++ b/arch/arm/boot/dts/sun4i-a10.dtsi
+@@ -195,6 +195,14 @@
+ clock-output-names = "pll1";
+ };
+
++ pll2: clk@01c20008 {
++ #clock-cells = <1>;
++ compatible = "allwinner,sun4i-a10-b-pll2-clk";
++ reg = <0x01c20008 0x4>;
++ clocks = <&osc24M>;
++ clock-output-names = "pll2", "pll2x2", "pll2x4", "pll2x8";
++ };
++
+ pll4: clk@01c20018 {
+ #clock-cells = <0>;
+ compatible = "allwinner,sun4i-a10-pll1-clk";
+diff --git a/arch/arm/boot/dts/sun5i-a13.dtsi b/arch/arm/boot/dts/sun5i-a13.dtsi
+index 53d3ead..a4b6a66 100644
+--- a/arch/arm/boot/dts/sun5i-a13.dtsi
++++ b/arch/arm/boot/dts/sun5i-a13.dtsi
+@@ -102,6 +102,14 @@
+ clock-output-names = "pll1";
+ };
+
++ pll2: clk@01c20008 {
++ #clock-cells = <1>;
++ compatible = "allwinner,sun4i-a10-b-pll2-clk";
++ reg = <0x01c20008 0x4>;
++ clocks = <&osc24M>;
++ clock-output-names = "pll2", "pll2x2", "pll2x4", "pll2x8";
++ };
++
+ pll4: clk@01c20018 {
+ #clock-cells = <0>;
+ compatible = "allwinner,sun4i-a10-pll1-clk";
+diff --git a/arch/arm/boot/dts/sun7i-a20.dtsi b/arch/arm/boot/dts/sun7i-a20.dtsi
+index 7549f1b..12d9ffd 100644
+--- a/arch/arm/boot/dts/sun7i-a20.dtsi
++++ b/arch/arm/boot/dts/sun7i-a20.dtsi
+@@ -199,6 +199,14 @@
+ clock-output-names = "pll1";
+ };
+
++ pll2: clk@01c20008 {
++ #clock-cells = <1>;
++ compatible = "allwinner,sun4i-a10-b-pll2-clk";
++ reg = <0x01c20008 0x4>;
++ clocks = <&osc24M>;
++ clock-output-names = "pll2", "pll2x2", "pll2x4", "pll2x8";
++ };
++
+ pll4: clk@01c20018 {
+ #clock-cells = <0>;
+ compatible = "allwinner,sun7i-a20-pll4-clk";
--- /dev/null
+From b404f3daca1807a74e07180397c6e85046b7a5cd Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Emilio=20L=C3=B3pez?= <emilio@elopez.com.ar>
+Date: Fri, 18 Jul 2014 15:58:58 -0300
+Subject: [PATCH] ARM: sunxi: Add codec clock support
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+This commit adds the codec clock definition to the sun4i, sun5i and
+sun7i device trees. The codec clock is used in the analog codec block.
+
+Signed-off-by: Emilio López <emilio@elopez.com.ar>
+Signed-off-by: Hans de Goede <hdegoede@redhat.com>
+---
+ arch/arm/boot/dts/sun4i-a10.dtsi | 8 ++++++++
+ arch/arm/boot/dts/sun5i.dtsi | 8 ++++++++
+ arch/arm/boot/dts/sun7i-a20.dtsi | 8 ++++++++
+ 3 files changed, 24 insertions(+)
+
+diff --git a/arch/arm/boot/dts/sun4i-a10.dtsi b/arch/arm/boot/dts/sun4i-a10.dtsi
+index fab13af..abea24e 100644
+--- a/arch/arm/boot/dts/sun4i-a10.dtsi
++++ b/arch/arm/boot/dts/sun4i-a10.dtsi
+@@ -454,6 +454,14 @@
+ clocks = <&osc24M>, <&pll6 1>, <&pll5 1>;
+ clock-output-names = "spi3";
+ };
++
++ codec_clk: clk@01c20140 {
++ #clock-cells = <0>;
++ compatible = "allwinner,sun4i-a10-codec-clk";
++ reg = <0x01c20140 0x4>;
++ clocks = <&pll2 0>;
++ clock-output-names = "codec";
++ };
+ };
+
+ soc@01c00000 {
+diff --git a/arch/arm/boot/dts/sun5i-a13.dtsi b/arch/arm/boot/dts/sun5i-a13.dtsi
+index a4b6a66..5c0edd6 100644
+--- a/arch/arm/boot/dts/sun5i-a13.dtsi
++++ b/arch/arm/boot/dts/sun5i-a13.dtsi
+@@ -292,6 +292,14 @@
+ clock-output-names = "usb_ohci0", "usb_phy";
+ };
+
++ codec_clk: clk@01c20140 {
++ #clock-cells = <0>;
++ compatible = "allwinner,sun4i-a10-codec-clk";
++ reg = <0x01c20140 0x4>;
++ clocks = <&pll2 0>;
++ clock-output-names = "codec";
++ };
++
+ mbus_clk: clk@01c2015c {
+ #clock-cells = <0>;
+ compatible = "allwinner,sun5i-a13-mbus-clk";
+diff --git a/arch/arm/boot/dts/sun7i-a20.dtsi b/arch/arm/boot/dts/sun7i-a20.dtsi
+index 12d9ffd..400e696 100644
+--- a/arch/arm/boot/dts/sun7i-a20.dtsi
++++ b/arch/arm/boot/dts/sun7i-a20.dtsi
+@@ -468,6 +468,14 @@
+ clock-output-names = "spi3";
+ };
+
++ codec_clk: clk@01c20140 {
++ #clock-cells = <0>;
++ compatible = "allwinner,sun4i-a10-codec-clk";
++ reg = <0x01c20140 0x4>;
++ clocks = <&pll2 0>;
++ clock-output-names = "codec";
++ };
++
+ mbus_clk: clk@01c2015c {
+ #clock-cells = <0>;
+ compatible = "allwinner,sun5i-a13-mbus-clk";
--- /dev/null
+From e9051f5dbc26e78f91cf23ca79ae4c8471119667 Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Emilio=20L=C3=B3pez?= <emilio@elopez.com.ar>
+Date: Fri, 18 Jul 2014 15:26:08 -0300
+Subject: [PATCH] ARM: sun7i: Add mod1 clock nodes
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+This commit adds all the mod1 clocks available on A20 to its device
+tree. This list was created by looking at the A20 user manual.
+
+Not-signed-off-by: Emilio López <emilio@elopez.com.ar>
+Signed-off-by: Hans de Goede <hdegoede@redhat.com>
+---
+ arch/arm/boot/dts/sun7i-a20.dtsi | 39 +++++++++++++++++++++++++++++++++++++++
+ 1 file changed, 39 insertions(+)
+
+diff --git a/arch/arm/boot/dts/sun7i-a20.dtsi b/arch/arm/boot/dts/sun7i-a20.dtsi
+index 400e696..a0d18b2 100644
+--- a/arch/arm/boot/dts/sun7i-a20.dtsi
++++ b/arch/arm/boot/dts/sun7i-a20.dtsi
+@@ -450,6 +450,29 @@
+ clock-output-names = "ir1";
+ };
+
++ iis0_clk: clk@01c200b8 {
++ #clock-cells = <0>;
++ compatible = "allwinner,sun4i-a10-mod1-clk";
++ reg = <0x01c200b8 0x4>;
++ clocks = <&pll2 0>, <&pll2 1>, <&pll2 2>, <&pll2 3>;
++ clock-output-names = "iis0";
++ };
++
++ ac97_clk: clk@01c200bc {
++ #clock-cells = <0>;
++ compatible = "allwinner,sun4i-a10-mod1-clk";
++ reg = <0x01c200bc 0x4>;
++ clocks = <&pll2 3>, <&pll2 2>, <&pll2 1>, <&pll2 0>;
++ clock-output-names = "ac97";
++ };
++
++ spdif_clk: clk@01c200c0 {
++ #clock-cells = <0>;
++ compatible = "allwinner,sun4i-a10-mod1-clk";
++ reg = <0x01c200c0 0x4>;
++ clocks = <&pll2 0>, <&pll2 1>, <&pll2 2>, <&pll2 3>;
++ clock-output-names = "spdif";
++ };
+ usb_clk: clk@01c200cc {
+ #clock-cells = <1>;
+ #reset-cells = <1>;
+@@ -468,6 +491,22 @@
+ clock-output-names = "spi3";
+ };
+
++ iis1_clk: clk@01c200d8 {
++ #clock-cells = <0>;
++ compatible = "allwinner,sun4i-a10-mod1-clk";
++ reg = <0x01c200d8 0x4>;
++ clocks = <&pll2 0>, <&pll2 1>, <&pll2 2>, <&pll2 3>;
++ clock-output-names = "iis1";
++ };
++
++ iis2_clk: clk@01c200dc {
++ #clock-cells = <0>;
++ compatible = "allwinner,sun4i-a10-mod1-clk";
++ reg = <0x01c200dc 0x4>;
++ clocks = <&pll2 0>, <&pll2 1>, <&pll2 2>, <&pll2 3>;
++ clock-output-names = "iis2";
++ };
++
+ codec_clk: clk@01c20140 {
+ #clock-cells = <0>;
+ compatible = "allwinner,sun4i-a10-codec-clk";
--- /dev/null
+From ed5c1e047de4e8a849cd0517590d5c1bbf3247fc Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Emilio=20L=C3=B3pez?= <elopez93@gmail.com>
+Date: Sun, 17 Aug 2014 19:25:53 -0300
+Subject: [PATCH] resort pll parents for audio
+
+Signed-off-by: Hans de Goede <hdegoede@redhat.com>
+---
+ arch/arm/boot/dts/sun7i-a20.dtsi | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/arch/arm/boot/dts/sun7i-a20.dtsi b/arch/arm/boot/dts/sun7i-a20.dtsi
+index a0d18b2..1cced70 100644
+--- a/arch/arm/boot/dts/sun7i-a20.dtsi
++++ b/arch/arm/boot/dts/sun7i-a20.dtsi
+@@ -470,7 +470,7 @@
+ #clock-cells = <0>;
+ compatible = "allwinner,sun4i-a10-mod1-clk";
+ reg = <0x01c200c0 0x4>;
+- clocks = <&pll2 0>, <&pll2 1>, <&pll2 2>, <&pll2 3>;
++ clocks = <&pll2 3>, <&pll2 2>, <&pll2 1>, <&pll2 0>;
+ clock-output-names = "spdif";
+ };
+ usb_clk: clk@01c200cc {
--- /dev/null
+From 97dcb50623db12f13c9c9a8b68dca61901b7f030 Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Emilio=20L=C3=B3pez?= <emilio@elopez.com.ar>
+Date: Mon, 14 Jul 2014 20:25:23 -0300
+Subject: [PATCH] ASoC: sunxi: add support for the on-chip codec on early
+ Allwinner SoCs
+
+The sun4i, sun5i and sun7i SoC families have a built-in codec, capable
+of both audio capture and playback. This memory-mapped device can be fed
+with audio data via the Allwinner DMA controller.
+
+Signed-off-by: Hans de Goede <hdegoede@redhat.com>
+---
+ sound/soc/Kconfig | 1 +
+ sound/soc/Makefile | 1 +
+ sound/soc/sunxi/Kconfig | 10 +
+ sound/soc/sunxi/Makefile | 2 +
+ sound/soc/sunxi/sunxi-codec.c | 802 ++++++++++++++++++++++++++++++++++++++++++
+ 5 files changed, 816 insertions(+)
+ create mode 100644 sound/soc/sunxi/Kconfig
+ create mode 100644 sound/soc/sunxi/Makefile
+ create mode 100644 sound/soc/sunxi/sunxi-codec.c
+
+diff --git a/sound/soc/Kconfig b/sound/soc/Kconfig
+index 3ba52da..87dbf48 100644
+--- a/sound/soc/Kconfig
++++ b/sound/soc/Kconfig
+@@ -53,6 +53,7 @@ source "sound/soc/samsung/Kconfig"
+ source "sound/soc/sh/Kconfig"
+ source "sound/soc/sirf/Kconfig"
+ source "sound/soc/spear/Kconfig"
++source "sound/soc/sunxi/Kconfig"
+ source "sound/soc/tegra/Kconfig"
+ source "sound/soc/txx9/Kconfig"
+ source "sound/soc/ux500/Kconfig"
+diff --git a/sound/soc/Makefile b/sound/soc/Makefile
+index 974ba70..39011b8 100644
+--- a/sound/soc/Makefile
++++ b/sound/soc/Makefile
+@@ -34,6 +34,7 @@ obj-$(CONFIG_SND_SOC) += samsung/
+ obj-$(CONFIG_SND_SOC) += sh/
+ obj-$(CONFIG_SND_SOC) += sirf/
+ obj-$(CONFIG_SND_SOC) += spear/
++obj-$(CONFIG_SND_SOC) += sunxi/
+ obj-$(CONFIG_SND_SOC) += tegra/
+ obj-$(CONFIG_SND_SOC) += txx9/
+ obj-$(CONFIG_SND_SOC) += ux500/
+diff --git a/sound/soc/sunxi/Kconfig b/sound/soc/sunxi/Kconfig
+new file mode 100644
+index 0000000..79511ae
+--- /dev/null
++++ b/sound/soc/sunxi/Kconfig
+@@ -0,0 +1,10 @@
++menu "SoC Audio support for Allwinner SoCs"
++ depends on ARCH_SUNXI
++
++config SND_SUNXI_SOC_CODEC
++ tristate "APB on-chip sun4i/sun5i/sun7i CODEC"
++ select SND_SOC_GENERIC_DMAENGINE_PCM
++ select REGMAP_MMIO
++ default y
++
++endmenu
+diff --git a/sound/soc/sunxi/Makefile b/sound/soc/sunxi/Makefile
+new file mode 100644
+index 0000000..b8950d3
+--- /dev/null
++++ b/sound/soc/sunxi/Makefile
+@@ -0,0 +1,2 @@
++obj-$(CONFIG_SND_SUNXI_SOC_CODEC) += sunxi-codec.o
++
+diff --git a/sound/soc/sunxi/sunxi-codec.c b/sound/soc/sunxi/sunxi-codec.c
+new file mode 100644
+index 0000000..67f978e
+--- /dev/null
++++ b/sound/soc/sunxi/sunxi-codec.c
+@@ -0,0 +1,802 @@
++/*
++ * Copyright 2014 Emilio López <emilio@elopez.com.ar>
++ * Copyright 2014 Jon Smirl <jonsmirl@gmail.com>
++ *
++ * Based on the Allwinner SDK driver, released under the GPL.
++ *
++ * This program is free software; you can redistribute it and/or modify
++ * it under the terms of the GNU General Public License as published by
++ * the Free Software Foundation; either version 2 of the License, or
++ * (at your option) any later version.
++ *
++ * This program is distributed in the hope that it will be useful,
++ * but WITHOUT ANY WARRANTY; without even the implied warranty of
++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
++ * GNU General Public License for more details.
++ */
++
++#include <linux/init.h>
++#include <linux/kernel.h>
++#include <linux/module.h>
++#include <linux/platform_device.h>
++#include <linux/delay.h>
++#include <linux/slab.h>
++#include <linux/of.h>
++#include <linux/of_platform.h>
++#include <linux/of_address.h>
++#include <linux/clk.h>
++#include <linux/regmap.h>
++
++#include <sound/core.h>
++#include <sound/pcm.h>
++#include <sound/pcm_params.h>
++#include <sound/soc.h>
++#include <sound/tlv.h>
++#include <sound/initval.h>
++#include <sound/dmaengine_pcm.h>
++
++/* Codec DAC register offsets and bit fields */
++#define SUNXI_DAC_DPC (0x00)
++#define SUNXI_DAC_DPC_EN_DA (31)
++#define SUNXI_DAC_DPC_DVOL (12)
++#define SUNXI_DAC_FIFOC (0x04)
++#define SUNXI_DAC_FIFOC_DAC_FS (29)
++#define SUNXI_DAC_FIFOC_FIR_VERSION (28)
++#define SUNXI_DAC_FIFOC_SEND_LASAT (26)
++#define SUNXI_DAC_FIFOC_TX_FIFO_MODE (24)
++#define SUNXI_DAC_FIFOC_DRQ_CLR_CNT (21)
++#define SUNXI_DAC_FIFOC_TX_TRIG_LEVEL (8)
++#define SUNXI_DAC_FIFOC_MONO_EN (6)
++#define SUNXI_DAC_FIFOC_TX_SAMPLE_BITS (5)
++#define SUNXI_DAC_FIFOC_DAC_DRQ_EN (4)
++#define SUNXI_DAC_FIFOC_FIFO_FLUSH (0)
++#define SUNXI_DAC_FIFOS (0x08)
++#define SUNXI_DAC_TXDATA (0x0c)
++#define SUNXI_DAC_ACTL (0x10)
++#define SUNXI_DAC_ACTL_DACAENR (31)
++#define SUNXI_DAC_ACTL_DACAENL (30)
++#define SUNXI_DAC_ACTL_MIXEN (29)
++#define SUNXI_DAC_ACTL_LDACLMIXS (15)
++#define SUNXI_DAC_ACTL_RDACRMIXS (14)
++#define SUNXI_DAC_ACTL_LDACRMIXS (13)
++#define SUNXI_DAC_ACTL_DACPAS (8)
++#define SUNXI_DAC_ACTL_MIXPAS (7)
++#define SUNXI_DAC_ACTL_PA_MUTE (6)
++#define SUNXI_DAC_ACTL_PA_VOL (0)
++#define SUNXI_DAC_TUNE (0x14)
++#define SUNXI_DAC_DEBUG (0x18)
++
++/* Codec ADC register offsets and bit fields */
++#define SUNXI_ADC_FIFOC (0x1c)
++#define SUNXI_ADC_FIFOC_EN_AD (28)
++#define SUNXI_ADC_FIFOC_RX_FIFO_MODE (24)
++#define SUNXI_ADC_FIFOC_RX_TRIG_LEVEL (8)
++#define SUNXI_ADC_FIFOC_MONO_EN (7)
++#define SUNXI_ADC_FIFOC_RX_SAMPLE_BITS (6)
++#define SUNXI_ADC_FIFOC_ADC_DRQ_EN (4)
++#define SUNXI_ADC_FIFOC_FIFO_FLUSH (0)
++#define SUNXI_ADC_FIFOS (0x20)
++#define SUNXI_ADC_RXDATA (0x24)
++#define SUNXI_ADC_ACTL (0x28)
++#define SUNXI_ADC_ACTL_ADCREN (31)
++#define SUNXI_ADC_ACTL_ADCLEN (30)
++#define SUNXI_ADC_ACTL_PREG1EN (29)
++#define SUNXI_ADC_ACTL_PREG2EN (28)
++#define SUNXI_ADC_ACTL_VMICEN (27)
++#define SUNXI_ADC_ACTL_VADCG (20)
++#define SUNXI_ADC_ACTL_ADCIS (17)
++#define SUNXI_ADC_ACTL_PA_EN (4)
++#define SUNXI_ADC_ACTL_DDE (3)
++#define SUNXI_ADC_DEBUG (0x2c)
++
++/* Other various ADC registers */
++#define SUNXI_DAC_TXCNT (0x30)
++#define SUNXI_ADC_RXCNT (0x34)
++#define SUNXI_AC_SYS_VERI (0x38)
++#define SUNXI_AC_MIC_PHONE_CAL (0x3c)
++
++/* Supported SoC families - used for quirks */
++enum sunxi_soc_family {
++ SUN4IA, /* A10 SoC - revision A */
++ SUN4I, /* A10 SoC - later revisions */
++ SUN5I, /* A10S/A13 SoCs */
++ SUN7I, /* A20 SoC */
++};
++
++struct sunxi_priv {
++ struct regmap *regmap;
++ struct clk *clk_apb, *clk_module;
++
++ enum sunxi_soc_family revision;
++
++ struct snd_dmaengine_dai_dma_data playback_dma_data;
++ struct snd_dmaengine_dai_dma_data capture_dma_data;
++};
++
++static void sunxi_codec_play_start(struct sunxi_priv *priv)
++{
++ /* TODO: see if we need to drive PA GPIO high */
++
++ /* flush TX FIFO */
++ regmap_update_bits(priv->regmap, SUNXI_DAC_FIFOC, 0x1 << SUNXI_DAC_FIFOC_FIFO_FLUSH, 0x1 << SUNXI_DAC_FIFOC_FIFO_FLUSH);
++
++ /* enable DAC DRQ */
++ regmap_update_bits(priv->regmap, SUNXI_DAC_FIFOC, 0x1 << SUNXI_DAC_FIFOC_DAC_DRQ_EN, 0x1 << SUNXI_DAC_FIFOC_DAC_DRQ_EN);
++}
++
++static void sunxi_codec_play_stop(struct sunxi_priv *priv)
++{
++ /* TODO: see if we need to drive PA GPIO low */
++
++ /* disable DAC DRQ */
++ regmap_update_bits(priv->regmap, SUNXI_DAC_FIFOC, 0x1 << SUNXI_DAC_FIFOC_DAC_DRQ_EN, 0x0 << SUNXI_DAC_FIFOC_DAC_DRQ_EN);
++}
++
++static void sunxi_codec_capture_start(struct sunxi_priv *priv)
++{
++ /* TODO: see if we need to drive PA GPIO high */
++
++ /* enable ADC DRQ */
++ regmap_update_bits(priv->regmap, SUNXI_ADC_FIFOC, 0x1 << SUNXI_ADC_FIFOC_ADC_DRQ_EN, 0x1 << SUNXI_ADC_FIFOC_ADC_DRQ_EN);
++}
++
++static void sunxi_codec_capture_stop(struct sunxi_priv *priv)
++{
++ /* disable ADC DRQ */
++ regmap_update_bits(priv->regmap, SUNXI_ADC_FIFOC, 0x1 << SUNXI_ADC_FIFOC_ADC_DRQ_EN, 0x0 << SUNXI_ADC_FIFOC_ADC_DRQ_EN);
++
++ /* enable mic1 PA */
++ regmap_update_bits(priv->regmap, SUNXI_ADC_ACTL, 0x1 << SUNXI_ADC_ACTL_PREG1EN, 0x0 << SUNXI_ADC_ACTL_PREG1EN);
++
++ /* enable VMIC */
++ regmap_update_bits(priv->regmap, SUNXI_ADC_ACTL, 0x1 << SUNXI_ADC_ACTL_VMICEN, 0x0 << SUNXI_ADC_ACTL_VMICEN);
++ if (priv->revision == SUN7I) {
++ /* TODO: undocumented */
++ regmap_update_bits(priv->regmap, SUNXI_DAC_TUNE, 0x3 << 8, 0x0 << 8);
++ }
++
++ /* enable ADC digital */
++ regmap_update_bits(priv->regmap, SUNXI_ADC_FIFOC, 0x1 << SUNXI_ADC_FIFOC_EN_AD, 0x0 << SUNXI_ADC_FIFOC_EN_AD);
++
++ /* set RX FIFO mode */
++ regmap_update_bits(priv->regmap, SUNXI_ADC_FIFOC, 0x1 << SUNXI_ADC_FIFOC_RX_FIFO_MODE, 0x0 << SUNXI_ADC_FIFOC_RX_FIFO_MODE);
++
++ /* flush RX FIFO */
++ regmap_update_bits(priv->regmap, SUNXI_ADC_FIFOC, 0x1 << SUNXI_ADC_FIFOC_FIFO_FLUSH, 0x0 << SUNXI_ADC_FIFOC_FIFO_FLUSH);
++
++ /* enable adc1 analog */
++ regmap_update_bits(priv->regmap, SUNXI_ADC_ACTL, 0x3 << SUNXI_ADC_ACTL_ADCLEN, 0x0 << SUNXI_ADC_ACTL_ADCLEN);
++}
++
++static int sunxi_codec_trigger(struct snd_pcm_substream *substream, int cmd,
++ struct snd_soc_dai *dai)
++{
++ struct snd_soc_pcm_runtime *rtd = substream->private_data;
++ struct sunxi_priv *priv = snd_soc_card_get_drvdata(rtd->card);
++
++ switch (cmd) {
++ case SNDRV_PCM_TRIGGER_START:
++ case SNDRV_PCM_TRIGGER_RESUME:
++ case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
++ if (substream->stream == SNDRV_PCM_STREAM_CAPTURE)
++ sunxi_codec_capture_start(priv);
++ else
++ sunxi_codec_play_start(priv);
++ break;
++ case SNDRV_PCM_TRIGGER_STOP:
++ case SNDRV_PCM_TRIGGER_SUSPEND:
++ case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
++ if (substream->stream == SNDRV_PCM_STREAM_CAPTURE)
++ sunxi_codec_capture_stop(priv);
++ else
++ sunxi_codec_play_stop(priv);
++ break;
++ default:
++ return -EINVAL;
++ }
++
++ return 0;
++}
++
++static int sunxi_codec_prepare(struct snd_pcm_substream *substream,
++ struct snd_soc_dai *dai)
++{
++ struct snd_soc_pcm_runtime *rtd = substream->private_data;
++ struct sunxi_priv *priv = snd_soc_card_get_drvdata(rtd->card);
++
++ if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
++ regmap_update_bits(priv->regmap, SUNXI_DAC_FIFOC, 0x1 << SUNXI_DAC_FIFOC_FIFO_FLUSH, 0x1 << SUNXI_DAC_FIFOC_FIFO_FLUSH);
++
++ /* set TX FIFO send DRQ level */
++ regmap_update_bits(priv->regmap, SUNXI_DAC_FIFOC, 0x3f << SUNXI_DAC_FIFOC_TX_TRIG_LEVEL, 0xf << SUNXI_DAC_FIFOC_TX_TRIG_LEVEL);
++ if (substream->runtime->rate > 32000) {
++ regmap_update_bits(priv->regmap, SUNXI_DAC_FIFOC, 0x1 << SUNXI_DAC_FIFOC_FIR_VERSION, 0x0 << SUNXI_DAC_FIFOC_FIR_VERSION);
++ } else {
++ regmap_update_bits(priv->regmap, SUNXI_DAC_FIFOC, 0x1 << SUNXI_DAC_FIFOC_FIR_VERSION, 0x1 << SUNXI_DAC_FIFOC_FIR_VERSION);
++ }
++
++ /* set TX FIFO MODE - 0 works for both 16 and 24 bits */
++ regmap_update_bits(priv->regmap, SUNXI_DAC_FIFOC, 0x1 << SUNXI_DAC_FIFOC_TX_FIFO_MODE, 0x0 << SUNXI_DAC_FIFOC_TX_FIFO_MODE);
++
++ /* send last sample when DAC FIFO under run */
++ regmap_update_bits(priv->regmap, SUNXI_DAC_FIFOC, 0x1 << SUNXI_DAC_FIFOC_SEND_LASAT, 0x0 << SUNXI_DAC_FIFOC_SEND_LASAT);
++ } else {
++ /* enable mic1 PA */
++ regmap_update_bits(priv->regmap, SUNXI_ADC_ACTL, 0x1 << SUNXI_ADC_ACTL_PREG1EN, 0x1 << SUNXI_ADC_ACTL_PREG1EN);
++
++ /* mic1 gain 32dB */ /* FIXME - makes no sense */
++ regmap_update_bits(priv->regmap, SUNXI_ADC_ACTL, 0x3 << 25, 0x1 << 25);
++
++ /* enable VMIC */
++ regmap_update_bits(priv->regmap, SUNXI_ADC_ACTL, 0x1 << SUNXI_ADC_ACTL_VMICEN, 0x1 << SUNXI_ADC_ACTL_VMICEN);
++
++ if (priv->revision == SUN7I) {
++ /* boost up record effect */
++ regmap_update_bits(priv->regmap, SUNXI_DAC_TUNE, 0x3 << 8, 0x1 << 8);
++ }
++
++ /* enable ADC digital */
++ regmap_update_bits(priv->regmap, SUNXI_ADC_FIFOC, 0x1 << SUNXI_ADC_FIFOC_EN_AD, 0x1 << SUNXI_ADC_FIFOC_EN_AD);
++
++ /* set RX FIFO mode */
++ regmap_update_bits(priv->regmap, SUNXI_ADC_FIFOC, 0x1 << SUNXI_ADC_FIFOC_RX_FIFO_MODE, 0x1 << SUNXI_ADC_FIFOC_RX_FIFO_MODE);
++
++ /* flush RX FIFO */
++ regmap_update_bits(priv->regmap, SUNXI_ADC_FIFOC, 0x1 << SUNXI_ADC_FIFOC_FIFO_FLUSH, 0x1 << SUNXI_ADC_FIFOC_FIFO_FLUSH);
++
++ /* set RX FIFO rec drq level */
++ regmap_update_bits(priv->regmap, SUNXI_ADC_FIFOC, 0xf << SUNXI_ADC_FIFOC_RX_TRIG_LEVEL, 0x7 << SUNXI_ADC_FIFOC_RX_TRIG_LEVEL);
++
++ /* enable adc1 analog */
++ regmap_update_bits(priv->regmap, SUNXI_ADC_ACTL, 0x3 << SUNXI_ADC_ACTL_ADCLEN, 0x3 << SUNXI_ADC_ACTL_ADCLEN);
++ }
++
++ return 0;
++}
++
++static int sunxi_codec_hw_params(struct snd_pcm_substream *substream,
++ struct snd_pcm_hw_params *params,
++ struct snd_soc_dai *dai)
++{
++ struct snd_soc_pcm_runtime *rtd = substream->private_data;
++ struct sunxi_priv *priv = snd_soc_card_get_drvdata(rtd->card);
++ int is_mono = !!(params_channels(params) == 1);
++ int is_24bit = !!(hw_param_interval(params, SNDRV_PCM_HW_PARAM_SAMPLE_BITS)->min == 32);
++ unsigned int rate = params_rate(params);
++ unsigned int hwrate;
++
++ switch (rate) {
++ case 176400:
++ case 88200:
++ case 44100:
++ case 33075:
++ case 22050:
++ case 14700:
++ case 11025:
++ case 7350:
++ default:
++ clk_set_rate(priv->clk_module, 22579200);
++ break;
++ case 192000:
++ case 96000:
++ case 48000:
++ case 32000:
++ case 24000:
++ case 16000:
++ case 12000:
++ case 8000:
++ clk_set_rate(priv->clk_module, 24576000);
++ break;
++ }
++
++ switch (rate) {
++ case 192000:
++ case 176400:
++ hwrate = 6;
++ break;
++ case 96000:
++ case 88200:
++ hwrate = 7;
++ break;
++ default:
++ case 48000:
++ case 44100:
++ hwrate = 0;
++ break;
++ case 32000:
++ case 33075:
++ hwrate = 1;
++ break;
++ case 24000:
++ case 22050:
++ hwrate = 2;
++ break;
++ case 16000:
++ case 14700:
++ hwrate = 3;
++ break;
++ case 12000:
++ case 11025:
++ hwrate = 4;
++ break;
++ case 8000:
++ case 7350:
++ hwrate = 5;
++ break;
++ }
++
++ if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
++ regmap_update_bits(priv->regmap, SUNXI_DAC_FIFOC, 7 << SUNXI_DAC_FIFOC_DAC_FS, hwrate << SUNXI_DAC_FIFOC_DAC_FS);
++ regmap_update_bits(priv->regmap, SUNXI_DAC_FIFOC, 1 << SUNXI_DAC_FIFOC_MONO_EN, is_mono << SUNXI_DAC_FIFOC_MONO_EN);
++ regmap_update_bits(priv->regmap, SUNXI_DAC_FIFOC, 1 << SUNXI_DAC_FIFOC_TX_SAMPLE_BITS, is_24bit << SUNXI_DAC_FIFOC_TX_SAMPLE_BITS);
++ if (is_24bit)
++ priv->playback_dma_data.addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES;
++ else
++ priv->playback_dma_data.addr_width = DMA_SLAVE_BUSWIDTH_2_BYTES;
++ } else {
++ regmap_update_bits(priv->regmap, SUNXI_ADC_FIFOC, 7 << SUNXI_DAC_FIFOC_DAC_FS, hwrate << SUNXI_DAC_FIFOC_DAC_FS);
++ regmap_update_bits(priv->regmap, SUNXI_ADC_FIFOC, 1 << SUNXI_ADC_FIFOC_MONO_EN, is_mono << SUNXI_ADC_FIFOC_MONO_EN);
++ }
++
++ return 0;
++}
++
++static const struct snd_kcontrol_new sun7i_dac_ctls[] = {
++ /*SUNXI_DAC_ACTL = 0x10,PAVOL*/
++ SOC_SINGLE("Master Playback Volume", SUNXI_DAC_ACTL, 0, 0x3f, 0),
++ SOC_SINGLE("Playback Switch", SUNXI_DAC_ACTL, 6, 1, 0), /* Global output switch */
++ SOC_SINGLE("FmL Switch", SUNXI_DAC_ACTL, 17, 1, 0), /* FM left switch */
++ SOC_SINGLE("FmR Switch", SUNXI_DAC_ACTL, 16, 1, 0), /* FM right switch */
++ SOC_SINGLE("LineL Switch", SUNXI_DAC_ACTL, 19, 1, 0), /* Line left switch */
++ SOC_SINGLE("LineR Switch", SUNXI_DAC_ACTL, 18, 1, 0), /* Line right switch */
++ SOC_SINGLE("Ldac Left Mixer", SUNXI_DAC_ACTL, 15, 1, 0),
++ SOC_SINGLE("Rdac Right Mixer", SUNXI_DAC_ACTL, 14, 1, 0),
++ SOC_SINGLE("Ldac Right Mixer", SUNXI_DAC_ACTL, 13, 1, 0),
++ SOC_SINGLE("Mic Input Mux", SUNXI_DAC_ACTL, 9, 15, 0), /* from bit 9 to bit 12. Microphone input mute */
++ SOC_SINGLE("MIC output volume", SUNXI_DAC_ACTL, 20, 7, 0),
++ /* FM Input to output mixer Gain Control
++ * From -4.5db to 6db,1.5db/step,default is 0db
++ * -4.5db:0x0,-3.0db:0x1,-1.5db:0x2,0db:0x3
++ * 1.5db:0x4,3.0db:0x5,4.5db:0x6,6db:0x7
++ */
++ SOC_SINGLE("Fm output Volume", SUNXI_DAC_ACTL, 23, 7, 0),
++ /* Line-in gain stage to output mixer Gain Control
++ * 0:-1.5db,1:0db
++ */
++ SOC_SINGLE("Line output Volume", SUNXI_DAC_ACTL, 26, 1, 0),
++
++ SOC_SINGLE("Master Capture Mute", SUNXI_ADC_ACTL, 4, 1, 0),
++ SOC_SINGLE("Right Capture Mute", SUNXI_ADC_ACTL, 31, 1, 0),
++ SOC_SINGLE("Left Capture Mute", SUNXI_ADC_ACTL, 30, 1, 0),
++ SOC_SINGLE("Linein Pre-AMP", SUNXI_ADC_ACTL, 13, 7, 0),
++ SOC_SINGLE("LINEIN APM Volume", SUNXI_AC_MIC_PHONE_CAL, 13, 0x7, 0),
++ /* ADC Input Gain Control, capture volume
++ * 000:-4.5db,001:-3db,010:-1.5db,011:0db,100:1.5db,101:3db,110:4.5db,111:6db
++ */
++ SOC_SINGLE("Capture Volume", SUNXI_ADC_ACTL, 20, 7, 0),
++ /*
++ * MIC2 pre-amplifier Gain Control
++ * 00:0db,01:35db,10:38db,11:41db
++ */
++ SOC_SINGLE("MicL Volume", SUNXI_ADC_ACTL, 25, 3, 0), /* Microphone left volume */
++ SOC_SINGLE("MicR Volume", SUNXI_ADC_ACTL, 23, 3, 0), /* Microphone right volume */
++ SOC_SINGLE("Mic2 Boost", SUNXI_ADC_ACTL, 29, 1, 0),
++ SOC_SINGLE("Mic1 Boost", SUNXI_ADC_ACTL, 28, 1, 0),
++ SOC_SINGLE("Mic Power", SUNXI_ADC_ACTL, 27, 1, 0),
++ SOC_SINGLE("ADC Input Mux", SUNXI_ADC_ACTL, 17, 7, 0), /* ADC input mute */
++ SOC_SINGLE("Mic2 gain Volume", SUNXI_AC_MIC_PHONE_CAL, 26, 7, 0),
++ /*
++ * MIC1 pre-amplifier Gain Control
++ * 00:0db,01:35db,10:38db,11:41db
++ */
++ SOC_SINGLE("Mic1 gain Volume", SUNXI_AC_MIC_PHONE_CAL, 29, 3, 0),
++};
++
++static int sunxi_codec_dai_probe(struct snd_soc_dai *dai)
++{
++ struct snd_soc_card *card = snd_soc_dai_get_drvdata(dai);
++ struct sunxi_priv *priv = snd_soc_card_get_drvdata(card);
++
++ snd_soc_dai_init_dma_data(dai, &priv->playback_dma_data, &priv->capture_dma_data);
++
++ return 0;
++}
++
++static void sunxi_codec_init(struct sunxi_priv *priv)
++{
++ regmap_update_bits(priv->regmap, SUNXI_DAC_FIFOC, 1 << SUNXI_DAC_FIFOC_FIR_VERSION, 1 << SUNXI_DAC_FIFOC_FIR_VERSION);
++
++ /* set digital volume to maximum */
++ if (priv->revision == SUN4IA)
++ regmap_update_bits(priv->regmap, SUNXI_DAC_DPC, 0x3F << SUNXI_DAC_DPC_DVOL, 0 << SUNXI_DAC_DPC_DVOL);
++
++ regmap_update_bits(priv->regmap, SUNXI_DAC_FIFOC, 3 << SUNXI_DAC_FIFOC_DRQ_CLR_CNT, 3 << SUNXI_DAC_FIFOC_DRQ_CLR_CNT);
++
++ /* set volume */ /* TODO: is A10A inverted? */
++ if (priv->revision == SUN4IA)
++ regmap_update_bits(priv->regmap, SUNXI_DAC_ACTL, 0x3f << SUNXI_DAC_ACTL_PA_VOL, 1 << SUNXI_DAC_ACTL_PA_VOL);
++ else
++ regmap_update_bits(priv->regmap, SUNXI_DAC_ACTL, 0x3f << SUNXI_DAC_ACTL_PA_VOL, 0x3b << SUNXI_DAC_ACTL_PA_VOL);
++}
++
++static int sunxi_codec_startup(struct snd_pcm_substream *substream,
++ struct snd_soc_dai *dai)
++{
++ struct snd_soc_pcm_runtime *rtd = substream->private_data;
++ struct sunxi_priv *priv = snd_soc_card_get_drvdata(rtd->card);
++
++ sunxi_codec_init(priv);
++
++ return clk_prepare_enable(priv->clk_module);
++}
++
++static void sunxi_codec_shutdown(struct snd_pcm_substream *substream,
++ struct snd_soc_dai *dai)
++{
++ struct snd_soc_pcm_runtime *rtd = substream->private_data;
++ struct sunxi_priv *priv = snd_soc_card_get_drvdata(rtd->card);
++
++ clk_disable_unprepare(priv->clk_module);
++}
++
++/*** Codec DAI ***/
++
++static const struct snd_soc_dai_ops sunxi_codec_dai_ops = {
++ .startup = sunxi_codec_startup,
++ .shutdown = sunxi_codec_shutdown,
++ .trigger = sunxi_codec_trigger,
++ .hw_params = sunxi_codec_hw_params,
++ .prepare = sunxi_codec_prepare,
++};
++
++static struct snd_soc_dai_driver sunxi_codec_dai = {
++ .name = "Codec",
++ .playback = {
++ .stream_name = "Codec Playback",
++ .channels_min = 1,
++ .channels_max = 2,
++ .rate_min = 8000,
++ .rate_max = 192000,
++ .rates = (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_11025 |\
++ SNDRV_PCM_RATE_22050| SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 |\
++ SNDRV_PCM_RATE_48000 |SNDRV_PCM_RATE_96000 | SNDRV_PCM_RATE_192000 |\
++ SNDRV_PCM_RATE_KNOT),
++ .formats = (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S32_LE),
++ .sig_bits = 24,
++ },
++ .capture = {
++ .stream_name = "Codec Capture",
++ .channels_min = 1,
++ .channels_max = 2,
++ .rate_min = 8000,
++ .rate_max = 192000,
++ .rates = (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_11025 |\
++ SNDRV_PCM_RATE_22050| SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 |\
++ SNDRV_PCM_RATE_48000 |SNDRV_PCM_RATE_96000 | SNDRV_PCM_RATE_192000 |\
++ SNDRV_PCM_RATE_KNOT),
++ .formats = (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S32_LE),
++ .sig_bits = 24,
++ },
++ .ops = &sunxi_codec_dai_ops,
++};
++
++/*** Codec ***/
++
++static const struct snd_kcontrol_new sunxi_pa =
++ SOC_DAPM_SINGLE("PA Switch", SUNXI_ADC_ACTL, SUNXI_ADC_ACTL_PA_EN, 1, 0);
++
++static const struct snd_kcontrol_new sunxi_pa_mute =
++ SOC_DAPM_SINGLE("PA Mute Switch", SUNXI_DAC_ACTL, SUNXI_DAC_ACTL_PA_MUTE, 1, 0);
++
++static DECLARE_TLV_DB_SCALE(sunxi_pa_volume_scale, -6300, 100, 1);
++
++static const struct snd_kcontrol_new sunxi_codec_widgets[] = {
++ SOC_SINGLE_TLV("PA Volume", SUNXI_DAC_ACTL, SUNXI_DAC_ACTL_PA_VOL,
++ 0x3F, 0, sunxi_pa_volume_scale),
++};
++
++static const char *right_output_mixer_text[] = { "Disabled", "Left", "Right" };
++static const unsigned int right_output_mixer_values[] = { 0x0, 0x1, 0x2 };
++static SOC_VALUE_ENUM_SINGLE_DECL(right_output_mixer, SUNXI_DAC_ACTL,
++ SUNXI_DAC_ACTL_LDACRMIXS, 0x3,
++ right_output_mixer_text,
++ right_output_mixer_values);
++
++static const char *left_output_mixer_text[] = { "Disabled", "Left" };
++static const unsigned int left_output_mixer_values[] = { 0x0, 0x1 };
++static SOC_VALUE_ENUM_SINGLE_DECL(left_output_mixer, SUNXI_DAC_ACTL,
++ SUNXI_DAC_ACTL_LDACLMIXS, 0x1,
++ left_output_mixer_text,
++ left_output_mixer_values);
++
++static const struct snd_kcontrol_new right_mixer =
++ SOC_DAPM_ENUM("Right Mixer", right_output_mixer);
++
++static const struct snd_kcontrol_new left_mixer =
++ SOC_DAPM_ENUM("Left Mixer", left_output_mixer);
++
++static const struct snd_kcontrol_new sunxi_mixer =
++ SOC_DAPM_SINGLE("Mixer Switch", SUNXI_DAC_ACTL, SUNXI_DAC_ACTL_MIXEN, 1, 0);
++
++static const char *sunxi_dac_output_text[] = { "Muted", "Mixed", "Direct" };
++static const unsigned int sunxi_dac_output_values[] = { 0x0, 0x1, 0x2 };
++static SOC_VALUE_ENUM_SINGLE_DECL(dac_output_mux, SUNXI_DAC_ACTL,
++ SUNXI_DAC_ACTL_MIXPAS, 0x3,
++ sunxi_dac_output_text,
++ sunxi_dac_output_values);
++
++static const struct snd_kcontrol_new sunxi_dac_output =
++ SOC_DAPM_ENUM("DAC Output", dac_output_mux);
++
++static const struct snd_soc_dapm_widget codec_dapm_widgets[] = {
++ /* Digital parts of the DACs */
++ SND_SOC_DAPM_SUPPLY("DAC", SUNXI_DAC_DPC, SUNXI_DAC_DPC_EN_DA, 0, NULL, 0),
++
++ /* Analog parts of the DACs */
++ SND_SOC_DAPM_DAC("Left DAC", NULL, SUNXI_DAC_ACTL, SUNXI_DAC_ACTL_DACAENL, 0),
++ SND_SOC_DAPM_DAC("Right DAC", NULL, SUNXI_DAC_ACTL, SUNXI_DAC_ACTL_DACAENR, 0),
++
++ SND_SOC_DAPM_SWITCH("PA", SUNXI_ADC_ACTL, SUNXI_ADC_ACTL_PA_EN, 0, &sunxi_pa),
++ SND_SOC_DAPM_SWITCH("PA Mute", SUNXI_DAC_ACTL, SUNXI_DAC_ACTL_PA_MUTE, 0, &sunxi_pa_mute),
++
++ SND_SOC_DAPM_MUX("Right Mixer", SUNXI_DAC_ACTL, SUNXI_DAC_ACTL_LDACRMIXS, 0, &right_mixer),
++ SND_SOC_DAPM_MUX("Left Mixer", SUNXI_DAC_ACTL, SUNXI_DAC_ACTL_LDACLMIXS, 0, &left_mixer),
++ SND_SOC_DAPM_SWITCH("Mixer", SUNXI_DAC_ACTL, SUNXI_DAC_ACTL_MIXEN, 0, &sunxi_mixer),
++
++ SND_SOC_DAPM_MUX("DAC Output", SUNXI_DAC_ACTL, SUNXI_DAC_ACTL_MIXPAS, 0, &sunxi_dac_output),
++
++ SND_SOC_DAPM_OUTPUT("Mic Bias"),
++ SND_SOC_DAPM_OUTPUT("HP Right"),
++ SND_SOC_DAPM_OUTPUT("HP Left"),
++ SND_SOC_DAPM_INPUT("MIC_IN"),
++ SND_SOC_DAPM_INPUT("LINE_IN"),
++};
++
++static const struct snd_soc_dapm_route codec_dapm_routes[] = {
++ /* DAC block */
++ { "Left DAC", NULL, "Codec Playback" },
++ { "Right DAC", NULL, "Codec Playback" },
++ { "Left DAC", NULL, "DAC" },
++ { "Right DAC", NULL, "DAC" },
++
++ /* DAC -> PA path */
++ { "DAC Output", "Direct", "Left DAC" },
++ { "DAC Output", "Direct", "Right DAC" },
++ { "PA", NULL, "DAC Output"},
++
++ /* DAC -> MIX -> PA path */
++ { "Left Mixer", "Left", "Left DAC" },
++ { "Right Mixer", "Right", "Right DAC" },
++ { "Mixer", NULL, "Left Mixer" },
++ { "Mixer", NULL, "Right Mixer" },
++ { "DAC Output", "Mixed", "Mixer" },
++ { "PA", NULL, "DAC Output" },
++
++ /* PA -> HP path */
++ { "PA Mute", NULL, "PA" },
++ { "HP Right", NULL, "PA Mute" },
++ { "HP Left", NULL, "PA Mute" },
++};
++
++static struct snd_soc_codec_driver sunxi_codec = {
++ .controls = sunxi_codec_widgets,
++ .num_controls = ARRAY_SIZE(sunxi_codec_widgets),
++ .dapm_widgets = codec_dapm_widgets,
++ .num_dapm_widgets = ARRAY_SIZE(codec_dapm_widgets),
++ .dapm_routes = codec_dapm_routes,
++ .num_dapm_routes = ARRAY_SIZE(codec_dapm_routes),
++};
++
++/*** Board routing ***/
++/* TODO: do this with DT */
++
++static const struct snd_soc_dapm_widget sunxi_board_dapm_widgets[] = {
++ SND_SOC_DAPM_HP("Headphone Jack", NULL),
++};
++
++static const struct snd_soc_dapm_route sunxi_board_routing[] = {
++ { "Headphone Jack", NULL, "HP Right" },
++ { "Headphone Jack", NULL, "HP Left" },
++};
++
++/*** Card and DAI Link ***/
++
++static struct snd_soc_dai_link cdc_dai = {
++ .name = "cdc",
++
++ .stream_name = "CDC PCM",
++ .codec_dai_name = "Codec",
++ .cpu_dai_name = "1c22c00.codec",
++ .codec_name = "1c22c00.codec",
++ .platform_name = "1c22c00.codec",
++ .dai_fmt = SND_SOC_DAIFMT_I2S,
++};
++
++static struct snd_soc_card snd_soc_sunxi_codec = {
++ .name = "sunxi-codec",
++ .owner = THIS_MODULE,
++ .dai_link = &cdc_dai,
++ .num_links = 1,
++ .dapm_widgets = sunxi_board_dapm_widgets,
++ .num_dapm_widgets = ARRAY_SIZE(sunxi_board_dapm_widgets),
++ .dapm_routes = sunxi_board_routing,
++ .num_dapm_routes = ARRAY_SIZE(sunxi_board_routing),
++};
++
++/*** CPU DAI ***/
++
++static const struct snd_soc_component_driver sunxi_codec_component = {
++ .name = "sunxi-codec",
++};
++
++#define SUNXI_RATES SNDRV_PCM_RATE_8000_192000
++#define SUNXI_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | \
++ SNDRV_PCM_FMTBIT_S32_LE)
++
++static struct snd_soc_dai_driver dummy_cpu_dai = {
++ .name = "sunxi-cpu-dai",
++ .probe = sunxi_codec_dai_probe,
++ .playback = {
++ .stream_name = "Playback",
++ .channels_min = 1,
++ .channels_max = 2,
++ .rates = SUNXI_RATES,
++ .formats = SUNXI_FORMATS,
++ .sig_bits = 24,
++ },
++ .capture = {
++ .stream_name = "Capture",
++ .channels_min = 1,
++ .channels_max = 2,
++ .rates = SUNXI_RATES,
++ .formats = SUNXI_FORMATS,
++ .sig_bits = 24,
++ },
++};
++
++static const struct regmap_config sunxi_codec_regmap_config = {
++ .reg_bits = 32,
++ .reg_stride = 4,
++ .val_bits = 32,
++ .max_register = SUNXI_AC_MIC_PHONE_CAL,
++};
++
++static const struct of_device_id sunxi_codec_of_match[] = {
++ { .compatible = "allwinner,sun4i-a10a-codec", .data = (void *)SUN4IA},
++ { .compatible = "allwinner,sun4i-a10-codec", .data = (void *)SUN4I},
++ { .compatible = "allwinner,sun5i-a13-codec", .data = (void *)SUN5I},
++ { .compatible = "allwinner,sun7i-a20-codec", .data = (void *)SUN7I},
++ {}
++};
++MODULE_DEVICE_TABLE(of, sunxi_codec_of_match);
++
++static int sunxi_codec_probe(struct platform_device *pdev)
++{
++ struct device_node *np = pdev->dev.of_node;
++ struct snd_soc_card *card = &snd_soc_sunxi_codec;
++ const struct of_device_id *of_id;
++ struct device *dev = &pdev->dev;
++ struct sunxi_priv *priv;
++ struct resource *res;
++ void __iomem *base;
++ int ret;
++
++ if (!of_device_is_available(np))
++ return -ENODEV;
++
++ of_id = of_match_device(sunxi_codec_of_match, dev);
++ if (!of_id)
++ return -EINVAL;
++
++ priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL);
++ if (!priv)
++ return -ENOMEM;
++
++ card->dev = &pdev->dev;
++ platform_set_drvdata(pdev, card);
++ snd_soc_card_set_drvdata(card, priv);
++
++ priv->revision = (enum sunxi_soc_family)of_id->data;
++
++ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
++ base = devm_ioremap_resource(&pdev->dev, res);
++ if (IS_ERR(base))
++ return PTR_ERR(base);
++
++ priv->regmap = devm_regmap_init_mmio(&pdev->dev, base,
++ &sunxi_codec_regmap_config);
++ if (IS_ERR(priv->regmap))
++ return PTR_ERR(priv->regmap);
++
++ /* Get the clocks from the DT */
++ priv->clk_apb = devm_clk_get(dev, "apb");
++ if (IS_ERR(priv->clk_apb)) {
++ dev_err(dev, "failed to get apb clock\n");
++ return PTR_ERR(priv->clk_apb);
++ }
++ priv->clk_module = devm_clk_get(dev, "codec");
++ if (IS_ERR(priv->clk_module)) {
++ dev_err(dev, "failed to get codec clock\n");
++ return PTR_ERR(priv->clk_module);
++ }
++
++ /* Enable the clock on a basic rate */
++ ret = clk_set_rate(priv->clk_module, 24576000);
++ if (ret) {
++ dev_err(dev, "failed to set codec base clock rate\n");
++ return ret;
++ }
++
++ /* Enable the bus clock */
++ if (clk_prepare_enable(priv->clk_apb)) {
++ dev_err(dev, "failed to enable apb clock\n");
++ clk_disable_unprepare(priv->clk_module);
++ return -EINVAL;
++ }
++
++ /* DMA configuration for TX FIFO */
++ priv->playback_dma_data.addr = res->start + SUNXI_DAC_TXDATA;
++ priv->playback_dma_data.maxburst = 4;
++ priv->playback_dma_data.addr_width = DMA_SLAVE_BUSWIDTH_2_BYTES;
++
++ /* DMA configuration for RX FIFO */
++ priv->capture_dma_data.addr = res->start + SUNXI_ADC_RXDATA;
++ priv->capture_dma_data.maxburst = 4;
++ priv->capture_dma_data.addr_width = DMA_SLAVE_BUSWIDTH_2_BYTES;
++
++ ret = snd_soc_register_codec(&pdev->dev, &sunxi_codec, &sunxi_codec_dai, 1);
++
++ ret = devm_snd_soc_register_component(&pdev->dev, &sunxi_codec_component, &dummy_cpu_dai, 1);
++ if (ret)
++ goto err_clk_disable;
++
++ ret = devm_snd_dmaengine_pcm_register(&pdev->dev, NULL, 0);
++ if (ret)
++ goto err_clk_disable;
++
++ sunxi_codec_init(priv);
++
++ ret = snd_soc_register_card(card);
++ if (ret) {
++ dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n", ret);
++ goto err_fini_utils;
++ }
++
++ ret = snd_soc_of_parse_audio_routing(card, "routing");
++ if (ret)
++ goto err;
++
++ return 0;
++
++err_fini_utils:
++err:
++err_clk_disable:
++ clk_disable_unprepare(priv->clk_apb);
++ return ret;
++}
++
++static int sunxi_codec_remove(struct platform_device *pdev)
++{
++ struct sunxi_priv *priv = platform_get_drvdata(pdev);
++
++ clk_disable_unprepare(priv->clk_apb);
++ clk_disable_unprepare(priv->clk_module);
++
++ return 0;
++}
++
++static struct platform_driver sunxi_codec_driver = {
++ .driver = {
++ .name = "sunxi-codec",
++ .owner = THIS_MODULE,
++ .of_match_table = sunxi_codec_of_match,
++ },
++ .probe = sunxi_codec_probe,
++ .remove = sunxi_codec_remove,
++};
++module_platform_driver(sunxi_codec_driver);
++
++MODULE_DESCRIPTION("sunxi codec ASoC driver");
++MODULE_AUTHOR("Emilio López <emilio@elopez.com.ar>");
++MODULE_AUTHOR("Jon Smirl <jonsmirl@gmail.com>");
++MODULE_LICENSE("GPL");
--- /dev/null
+From f8517e7d836269f5fa1e1049394104417d3a7357 Mon Sep 17 00:00:00 2001
+From: "B.R. Oake" <broake@openmailbox.org>
+Date: Sat, 6 Sep 2014 14:58:50 +0000
+Subject: [PATCH] ASoC: sunxi-codec: Fix distortion on 16-bit mono
+
+Patch to remove distortion on 16-bit mono, based on the linux-sunxi-3.4
+code.
+
+Signed-off-by: Hans de Goede <hdegoede@redhat.com>
+---
+ sound/soc/sunxi/sunxi-codec.c | 4 +---
+ 1 file changed, 1 insertion(+), 3 deletions(-)
+
+diff --git a/sound/soc/sunxi/sunxi-codec.c b/sound/soc/sunxi/sunxi-codec.c
+index 67f978e..77a191b 100644
+--- a/sound/soc/sunxi/sunxi-codec.c
++++ b/sound/soc/sunxi/sunxi-codec.c
+@@ -215,9 +215,6 @@ static int sunxi_codec_prepare(struct snd_pcm_substream *substream,
+ regmap_update_bits(priv->regmap, SUNXI_DAC_FIFOC, 0x1 << SUNXI_DAC_FIFOC_FIR_VERSION, 0x1 << SUNXI_DAC_FIFOC_FIR_VERSION);
+ }
+
+- /* set TX FIFO MODE - 0 works for both 16 and 24 bits */
+- regmap_update_bits(priv->regmap, SUNXI_DAC_FIFOC, 0x1 << SUNXI_DAC_FIFOC_TX_FIFO_MODE, 0x0 << SUNXI_DAC_FIFOC_TX_FIFO_MODE);
+-
+ /* send last sample when DAC FIFO under run */
+ regmap_update_bits(priv->regmap, SUNXI_DAC_FIFOC, 0x1 << SUNXI_DAC_FIFOC_SEND_LASAT, 0x0 << SUNXI_DAC_FIFOC_SEND_LASAT);
+ } else {
+@@ -329,6 +326,7 @@ static int sunxi_codec_hw_params(struct snd_pcm_substream *substream,
+ regmap_update_bits(priv->regmap, SUNXI_DAC_FIFOC, 7 << SUNXI_DAC_FIFOC_DAC_FS, hwrate << SUNXI_DAC_FIFOC_DAC_FS);
+ regmap_update_bits(priv->regmap, SUNXI_DAC_FIFOC, 1 << SUNXI_DAC_FIFOC_MONO_EN, is_mono << SUNXI_DAC_FIFOC_MONO_EN);
+ regmap_update_bits(priv->regmap, SUNXI_DAC_FIFOC, 1 << SUNXI_DAC_FIFOC_TX_SAMPLE_BITS, is_24bit << SUNXI_DAC_FIFOC_TX_SAMPLE_BITS);
++ regmap_update_bits(priv->regmap, SUNXI_DAC_FIFOC, 1 << SUNXI_DAC_FIFOC_TX_FIFO_MODE, !is_24bit << SUNXI_DAC_FIFOC_TX_FIFO_MODE);
+ if (is_24bit)
+ priv->playback_dma_data.addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES;
+ else
--- /dev/null
+From ca3f125c08bab943572a15ac3a52f33f132cf77f Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Emilio=20L=C3=B3pez?= <elopez93@gmail.com>
+Date: Mon, 18 Aug 2014 01:07:55 -0300
+Subject: [PATCH] ARM: sun7i: dt: Add sunxi codec device node
+
+The A20 SoC includes the Allwinner audio codec, capable of both 24-bit
+playback and capture. This commit adds a device node for it.
+
+Signed-off-by: Hans de Goede <hdegoede@redhat.com>
+---
+ arch/arm/boot/dts/sun7i-a20.dtsi | 12 ++++++++++++
+ 1 file changed, 12 insertions(+)
+
+diff --git a/arch/arm/boot/dts/sun7i-a20.dtsi b/arch/arm/boot/dts/sun7i-a20.dtsi
+index 1cced70..a99bbae 100644
+--- a/arch/arm/boot/dts/sun7i-a20.dtsi
++++ b/arch/arm/boot/dts/sun7i-a20.dtsi
+@@ -1214,6 +1214,18 @@
+ status = "disabled";
+ };
+
++ codec: codec@01c22c00 {
++ #sound-dai-cells = <0>;
++ compatible = "allwinner,sun7i-a20-codec";
++ reg = <0x01c22c00 0x40>;
++ interrupts = <0 30 4>;
++ clocks = <&apb0_gates 0>, <&codec_clk>;
++ clock-names = "apb", "codec";
++ dmas = <&dma 0 19>, <&dma 0 19>;
++ dma-names = "rx", "tx";
++ status = "disabled";
++ };
++
+ sid: eeprom@01c23800 {
+ compatible = "allwinner,sun7i-a20-sid";
+ reg = <0x01c23800 0x200>;
--- /dev/null
+diff -ruN old/arch/arm/boot/dts/sun7i-a20-olinuxino-micro.dts new/arch/arm/boot/dts/sun7i-a20-olinuxino-micro.dts
+--- old/arch/arm/boot/dts/sun7i-a20-olinuxino-micro.dts 2015-07-10 18:50:06.000000000 +0200
++++ new/arch/arm/boot/dts/sun7i-a20-olinuxino-micro.dts 2015-08-02 11:45:06.000000000 +0200
+@@ -245,3 +245,10 @@
+ };
+ };
+
++
++&codec {
++ routing =
++ "Headphone Jack", "HP Left",
++ "Headphone Jack", "HP Right";
++ status = "okay";
++};
--- /dev/null
+From f9681320a1c1caed9c899acfefcb308ac7c911d1 Mon Sep 17 00:00:00 2001
+From: Maxime Ripard <maxime.ripard@free-electrons.com>
+Date: Fri, 1 May 2015 22:39:45 +0200
+Subject: [PATCH] Add cubieboard2 audio codec
+
+Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
+---
+ arch/arm/boot/dts/sun7i-a20-cubieboard2.dts | 7 +++++++
+ 1 file changed, 7 insertions(+)
+
+diff --git a/arch/arm/boot/dts/sun7i-a20-cubieboard2.dts b/arch/arm/boot/dts/sun7i-a20-cubieboard2.dts
+index 39a51d5..5f9f0b9 100644
+--- a/arch/arm/boot/dts/sun7i-a20-cubieboard2.dts
++++ b/arch/arm/boot/dts/sun7i-a20-cubieboard2.dts
+@@ -84,6 +84,13 @@
+ status = "okay";
+ };
+
++&codec {
++ routing =
++ "Headphone Jack", "HP Left",
++ "Headphone Jack", "HP Right";
++ status = "okay";
++};
++
+ &cpu0 {
+ cpu-supply = <®_dcdc2>;
+ };
--- /dev/null
+From 42ac277ad129cf69d5540938c943f6291a7a9898 Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Emilio=20L=C3=B3pez?= <elopez93@gmail.com>
+Date: Mon, 18 Aug 2014 01:10:05 -0300
+Subject: [PATCH] ARM: sun7i: dt: enable audio codec on Cubietruck
+
+This commit enables the on-chip audio codec present on the A20 SoC
+and outlines the SoC to connector routes for the Cubietruck.
+
+Signed-off-by: Hans de Goede <hdegoede@redhat.com>
+---
+ arch/arm/boot/dts/sun7i-a20-cubietruck.dts | 7 +++++++
+ 1 file changed, 7 insertions(+)
+
+diff --git a/arch/arm/boot/dts/sun7i-a20-cubietruck.dts b/arch/arm/boot/dts/sun7i-a20-cubietruck.dts
+index 4611e2f..d05e06d 100644
+--- a/arch/arm/boot/dts/sun7i-a20-cubietruck.dts
++++ b/arch/arm/boot/dts/sun7i-a20-cubietruck.dts
+@@ -105,6 +105,13 @@
+ status = "okay";
+ };
+
++&codec {
++ routing =
++ "Headphone Jack", "HP Left",
++ "Headphone Jack", "HP Right";
++ status = "okay";
++};
++
+ &cpu0 {
+ cpu-supply = <®_dcdc2>;
+ };
--- /dev/null
+From 744543c599c420bcddca08cd2e2713b82a008328 Mon Sep 17 00:00:00 2001
+From: Hans de Goede <hdegoede@redhat.com>
+Date: Wed, 8 Jul 2015 16:41:38 +0200
+Subject: [PATCH] usb: musb: sunxi: Add support for the Allwinner sunxi musb
+ controller
+
+This is based on initial code to get the Allwinner sunxi musb controller
+supported by Chen-Yu Tsai and Roman Byshko.
+
+This adds support for the Allwinner sunxi musb controller in both host only
+and otg mode. Peripheral only mode is not supported, as no boards use that.
+
+This has been tested on a cubietruck (A20 SoC) and an UTOO P66 tablet
+(A13 SoC) with a variety of devices in host mode and with the g_serial gadget
+driver in peripheral mode, plugging otg / host cables in/out a lot of times
+in all possible imaginable plug orders.
+
+Signed-off-by: Hans de Goede <hdegoede@redhat.com>
+Signed-off-by: Felipe Balbi <balbi@ti.com>
+---
+ .../bindings/usb/allwinner,sun4i-a10-musb.txt | 27 +
+ drivers/usb/musb/Kconfig | 13 +-
+ drivers/usb/musb/Makefile | 1 +
+ drivers/usb/musb/sunxi.c | 703 +++++++++++++++++++++
+ 4 files changed, 743 insertions(+), 1 deletion(-)
+ create mode 100644 Documentation/devicetree/bindings/usb/allwinner,sun4i-a10-musb.txt
+ create mode 100644 drivers/usb/musb/sunxi.c
+
+diff --git a/Documentation/devicetree/bindings/usb/allwinner,sun4i-a10-musb.txt b/Documentation/devicetree/bindings/usb/allwinner,sun4i-a10-musb.txt
+new file mode 100644
+index 0000000..9254a6c
+--- /dev/null
++++ b/Documentation/devicetree/bindings/usb/allwinner,sun4i-a10-musb.txt
+@@ -0,0 +1,27 @@
++Allwinner sun4i A10 musb DRC/OTG controller
++-------------------------------------------
++
++Required properties:
++ - compatible : "allwinner,sun4i-a10-musb"
++ - reg : mmio address range of the musb controller
++ - clocks : clock specifier for the musb controller ahb gate clock
++ - interrupts : interrupt to which the musb controller is connected
++ - interrupt-names : must be "mc"
++ - phys : phy specifier for the otg phy
++ - phy-names : must be "usb"
++ - dr_mode : Dual-Role mode must be "host" or "otg"
++ - extcon : extcon specifier for the otg phy
++
++Example:
++
++ usb_otg: usb@01c13000 {
++ compatible = "allwinner,sun4i-a10-musb";
++ reg = <0x01c13000 0x0400>;
++ clocks = <&ahb_gates 0>;
++ interrupts = <38>;
++ interrupt-names = "mc";
++ phys = <&usbphy 0>;
++ phy-names = "usb";
++ extcon = <&usbphy 0>;
++ status = "disabled";
++ };
+diff --git a/drivers/usb/musb/Kconfig b/drivers/usb/musb/Kconfig
+index 39db8b6..37081ed 100644
+--- a/drivers/usb/musb/Kconfig
++++ b/drivers/usb/musb/Kconfig
+@@ -5,7 +5,7 @@
+
+ # (M)HDRC = (Multipoint) Highspeed Dual-Role Controller
+ config USB_MUSB_HDRC
+- tristate 'Inventra Highspeed Dual Role Controller (TI, ADI, ...)'
++ tristate 'Inventra Highspeed Dual Role Controller (TI, ADI, AW, ...)'
+ depends on (USB || USB_GADGET)
+ help
+ Say Y here if your system has a dual role high speed USB
+@@ -20,6 +20,8 @@ config USB_MUSB_HDRC
+ Analog Devices parts using this IP include Blackfin BF54x,
+ BF525 and BF527.
+
++ Allwinner SoCs using this IP include A10, A13, A20, ...
++
+ If you do not know what this is, please say N.
+
+ To compile this driver as a module, choose M here; the
+@@ -60,6 +62,15 @@ endchoice
+
+ comment "Platform Glue Layer"
+
++config USB_MUSB_SUNXI
++ tristate "Allwinner (sunxi)"
++ depends on ARCH_SUNXI
++ depends on NOP_USB_XCEIV
++ depends on PHY_SUN4I_USB
++ depends on EXTCON
++ depends on GENERIC_PHY
++ select SUNXI_SRAM
++
+ config USB_MUSB_DAVINCI
+ tristate "DaVinci"
+ depends on ARCH_DAVINCI_DMx
+diff --git a/drivers/usb/musb/Makefile b/drivers/usb/musb/Makefile
+index ba49501..f95befe 100644
+--- a/drivers/usb/musb/Makefile
++++ b/drivers/usb/musb/Makefile
+@@ -20,6 +20,7 @@ obj-$(CONFIG_USB_MUSB_DA8XX) += da8xx.o
+ obj-$(CONFIG_USB_MUSB_BLACKFIN) += blackfin.o
+ obj-$(CONFIG_USB_MUSB_UX500) += ux500.o
+ obj-$(CONFIG_USB_MUSB_JZ4740) += jz4740.o
++obj-$(CONFIG_USB_MUSB_SUNXI) += sunxi.o
+
+
+ obj-$(CONFIG_USB_MUSB_AM335X_CHILD) += musb_am335x.o
+diff --git a/drivers/usb/musb/sunxi.c b/drivers/usb/musb/sunxi.c
+new file mode 100644
+index 0000000..00d7248
+--- /dev/null
++++ b/drivers/usb/musb/sunxi.c
+@@ -0,0 +1,703 @@
++/*
++ * Allwinner sun4i MUSB Glue Layer
++ *
++ * Copyright (C) 2015 Hans de Goede <hdegoede@redhat.com>
++ *
++ * Based on code from
++ * Allwinner Technology Co., Ltd. <www.allwinnertech.com>
++ *
++ * This program is free software; you can redistribute it and/or modify
++ * it under the terms of the GNU General Public License as published by
++ * the Free Software Foundation; either version 2 of the License, or
++ * (at your option) any later version.
++ *
++ * This program is distributed in the hope that it will be useful,
++ * but WITHOUT ANY WARRANTY; without even the implied warranty of
++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
++ * GNU General Public License for more details.
++ */
++
++#include <linux/clk.h>
++#include <linux/err.h>
++#include <linux/extcon.h>
++#include <linux/io.h>
++#include <linux/kernel.h>
++#include <linux/module.h>
++#include <linux/of.h>
++#include <linux/phy/phy-sun4i-usb.h>
++#include <linux/platform_device.h>
++#include <linux/soc/sunxi/sunxi_sram.h>
++#include <linux/usb/musb.h>
++#include <linux/usb/of.h>
++#include <linux/usb/usb_phy_generic.h>
++#include <linux/workqueue.h>
++#include "musb_core.h"
++
++/*
++ * Register offsets, note sunxi musb has a different layout then most
++ * musb implementations, we translate the layout in musb_readb & friends.
++ */
++#define SUNXI_MUSB_POWER 0x0040
++#define SUNXI_MUSB_DEVCTL 0x0041
++#define SUNXI_MUSB_INDEX 0x0042
++#define SUNXI_MUSB_VEND0 0x0043
++#define SUNXI_MUSB_INTRTX 0x0044
++#define SUNXI_MUSB_INTRRX 0x0046
++#define SUNXI_MUSB_INTRTXE 0x0048
++#define SUNXI_MUSB_INTRRXE 0x004a
++#define SUNXI_MUSB_INTRUSB 0x004c
++#define SUNXI_MUSB_INTRUSBE 0x0050
++#define SUNXI_MUSB_FRAME 0x0054
++#define SUNXI_MUSB_TXFIFOSZ 0x0090
++#define SUNXI_MUSB_TXFIFOADD 0x0092
++#define SUNXI_MUSB_RXFIFOSZ 0x0094
++#define SUNXI_MUSB_RXFIFOADD 0x0096
++#define SUNXI_MUSB_FADDR 0x0098
++#define SUNXI_MUSB_TXFUNCADDR 0x0098
++#define SUNXI_MUSB_TXHUBADDR 0x009a
++#define SUNXI_MUSB_TXHUBPORT 0x009b
++#define SUNXI_MUSB_RXFUNCADDR 0x009c
++#define SUNXI_MUSB_RXHUBADDR 0x009e
++#define SUNXI_MUSB_RXHUBPORT 0x009f
++#define SUNXI_MUSB_CONFIGDATA 0x00c0
++
++/* VEND0 bits */
++#define SUNXI_MUSB_VEND0_PIO_MODE 0
++
++/* flags */
++#define SUNXI_MUSB_FL_ENABLED 0
++#define SUNXI_MUSB_FL_HOSTMODE 1
++#define SUNXI_MUSB_FL_HOSTMODE_PEND 2
++#define SUNXI_MUSB_FL_VBUS_ON 3
++#define SUNXI_MUSB_FL_PHY_ON 4
++
++/* Our read/write methods need access and do not get passed in a musb ref :| */
++static struct musb *sunxi_musb;
++
++struct sunxi_glue {
++ struct device *dev;
++ struct platform_device *musb;
++ struct clk *clk;
++ struct phy *phy;
++ struct platform_device *usb_phy;
++ struct usb_phy *xceiv;
++ unsigned long flags;
++ struct work_struct work;
++ struct extcon_dev *extcon;
++ struct notifier_block host_nb;
++};
++
++/* phy_power_on / off may sleep, so we use a workqueue */
++static void sunxi_musb_work(struct work_struct *work)
++{
++ struct sunxi_glue *glue = container_of(work, struct sunxi_glue, work);
++ bool vbus_on, phy_on;
++
++ if (!test_bit(SUNXI_MUSB_FL_ENABLED, &glue->flags))
++ return;
++
++ if (test_and_clear_bit(SUNXI_MUSB_FL_HOSTMODE_PEND, &glue->flags)) {
++ struct musb *musb = platform_get_drvdata(glue->musb);
++ unsigned long flags;
++ u8 devctl;
++
++ spin_lock_irqsave(&musb->lock, flags);
++
++ devctl = readb(musb->mregs + SUNXI_MUSB_DEVCTL);
++ if (test_bit(SUNXI_MUSB_FL_HOSTMODE, &glue->flags)) {
++ set_bit(SUNXI_MUSB_FL_VBUS_ON, &glue->flags);
++ musb->xceiv->otg->default_a = 1;
++ musb->xceiv->otg->state = OTG_STATE_A_IDLE;
++ MUSB_HST_MODE(musb);
++ devctl |= MUSB_DEVCTL_SESSION;
++ } else {
++ clear_bit(SUNXI_MUSB_FL_VBUS_ON, &glue->flags);
++ musb->xceiv->otg->default_a = 0;
++ musb->xceiv->otg->state = OTG_STATE_B_IDLE;
++ MUSB_DEV_MODE(musb);
++ devctl &= ~MUSB_DEVCTL_SESSION;
++ }
++ writeb(devctl, musb->mregs + SUNXI_MUSB_DEVCTL);
++
++ spin_unlock_irqrestore(&musb->lock, flags);
++ }
++
++ vbus_on = test_bit(SUNXI_MUSB_FL_VBUS_ON, &glue->flags);
++ phy_on = test_bit(SUNXI_MUSB_FL_PHY_ON, &glue->flags);
++
++ if (phy_on != vbus_on) {
++ if (vbus_on) {
++ phy_power_on(glue->phy);
++ set_bit(SUNXI_MUSB_FL_PHY_ON, &glue->flags);
++ } else {
++ phy_power_off(glue->phy);
++ clear_bit(SUNXI_MUSB_FL_PHY_ON, &glue->flags);
++ }
++ }
++}
++
++static void sunxi_musb_set_vbus(struct musb *musb, int is_on)
++{
++ struct sunxi_glue *glue = dev_get_drvdata(musb->controller->parent);
++
++ if (is_on)
++ set_bit(SUNXI_MUSB_FL_VBUS_ON, &glue->flags);
++ else
++ clear_bit(SUNXI_MUSB_FL_VBUS_ON, &glue->flags);
++
++ schedule_work(&glue->work);
++}
++
++static void sunxi_musb_pre_root_reset_end(struct musb *musb)
++{
++ struct sunxi_glue *glue = dev_get_drvdata(musb->controller->parent);
++
++ sun4i_usb_phy_set_squelch_detect(glue->phy, false);
++}
++
++static void sunxi_musb_post_root_reset_end(struct musb *musb)
++{
++ struct sunxi_glue *glue = dev_get_drvdata(musb->controller->parent);
++
++ sun4i_usb_phy_set_squelch_detect(glue->phy, true);
++}
++
++static irqreturn_t sunxi_musb_interrupt(int irq, void *__hci)
++{
++ struct musb *musb = __hci;
++ unsigned long flags;
++
++ spin_lock_irqsave(&musb->lock, flags);
++
++ musb->int_usb = readb(musb->mregs + SUNXI_MUSB_INTRUSB);
++ if (musb->int_usb)
++ writeb(musb->int_usb, musb->mregs + SUNXI_MUSB_INTRUSB);
++
++ /*
++ * sunxi musb often signals babble on low / full speed device
++ * disconnect, without ever raising MUSB_INTR_DISCONNECT, since
++ * normally babble never happens treat it as disconnect.
++ */
++ if ((musb->int_usb & MUSB_INTR_BABBLE) && is_host_active(musb)) {
++ musb->int_usb &= ~MUSB_INTR_BABBLE;
++ musb->int_usb |= MUSB_INTR_DISCONNECT;
++ }
++
++ if ((musb->int_usb & MUSB_INTR_RESET) && !is_host_active(musb)) {
++ /* ep0 FADDR must be 0 when (re)entering peripheral mode */
++ musb_ep_select(musb->mregs, 0);
++ musb_writeb(musb->mregs, MUSB_FADDR, 0);
++ }
++
++ musb->int_tx = readw(musb->mregs + SUNXI_MUSB_INTRTX);
++ if (musb->int_tx)
++ writew(musb->int_tx, musb->mregs + SUNXI_MUSB_INTRTX);
++
++ musb->int_rx = readw(musb->mregs + SUNXI_MUSB_INTRRX);
++ if (musb->int_rx)
++ writew(musb->int_rx, musb->mregs + SUNXI_MUSB_INTRRX);
++
++ musb_interrupt(musb);
++
++ spin_unlock_irqrestore(&musb->lock, flags);
++
++ return IRQ_HANDLED;
++}
++
++static int sunxi_musb_host_notifier(struct notifier_block *nb,
++ unsigned long event, void *ptr)
++{
++ struct sunxi_glue *glue = container_of(nb, struct sunxi_glue, host_nb);
++
++ if (event)
++ set_bit(SUNXI_MUSB_FL_HOSTMODE, &glue->flags);
++ else
++ clear_bit(SUNXI_MUSB_FL_HOSTMODE, &glue->flags);
++
++ set_bit(SUNXI_MUSB_FL_HOSTMODE_PEND, &glue->flags);
++ schedule_work(&glue->work);
++
++ return NOTIFY_DONE;
++}
++
++static int sunxi_musb_init(struct musb *musb)
++{
++ struct sunxi_glue *glue = dev_get_drvdata(musb->controller->parent);
++ int ret;
++
++ sunxi_musb = musb;
++ musb->phy = glue->phy;
++ musb->xceiv = glue->xceiv;
++
++ ret = sunxi_sram_claim(musb->controller->parent);
++ if (ret)
++ return ret;
++
++ ret = clk_prepare_enable(glue->clk);
++ if (ret)
++ goto error_sram_release;
++
++ writeb(SUNXI_MUSB_VEND0_PIO_MODE, musb->mregs + SUNXI_MUSB_VEND0);
++
++ /* Register notifier before calling phy_init() */
++ if (musb->port_mode == MUSB_PORT_MODE_DUAL_ROLE) {
++ ret = extcon_register_notifier(glue->extcon, EXTCON_USB_HOST,
++ &glue->host_nb);
++ if (ret)
++ goto error_clk_disable;
++ }
++
++ ret = phy_init(glue->phy);
++ if (ret)
++ goto error_unregister_notifier;
++
++ if (musb->port_mode == MUSB_PORT_MODE_HOST) {
++ ret = phy_power_on(glue->phy);
++ if (ret)
++ goto error_phy_exit;
++ set_bit(SUNXI_MUSB_FL_PHY_ON, &glue->flags);
++ /* Stop musb work from turning vbus off again */
++ set_bit(SUNXI_MUSB_FL_VBUS_ON, &glue->flags);
++ }
++
++ musb->isr = sunxi_musb_interrupt;
++
++ /* Stop the musb-core from doing runtime pm (not supported on sunxi) */
++ pm_runtime_get(musb->controller);
++
++ return 0;
++
++error_phy_exit:
++ phy_exit(glue->phy);
++error_unregister_notifier:
++ if (musb->port_mode == MUSB_PORT_MODE_DUAL_ROLE)
++ extcon_unregister_notifier(glue->extcon, EXTCON_USB_HOST,
++ &glue->host_nb);
++error_clk_disable:
++ clk_disable_unprepare(glue->clk);
++error_sram_release:
++ sunxi_sram_release(musb->controller->parent);
++ return ret;
++}
++
++static int sunxi_musb_exit(struct musb *musb)
++{
++ struct sunxi_glue *glue = dev_get_drvdata(musb->controller->parent);
++
++ pm_runtime_put(musb->controller);
++
++ cancel_work_sync(&glue->work);
++ if (test_bit(SUNXI_MUSB_FL_PHY_ON, &glue->flags))
++ phy_power_off(glue->phy);
++
++ phy_exit(glue->phy);
++
++ if (musb->port_mode == MUSB_PORT_MODE_DUAL_ROLE)
++ extcon_unregister_notifier(glue->extcon, EXTCON_USB_HOST,
++ &glue->host_nb);
++
++ clk_disable_unprepare(glue->clk);
++ sunxi_sram_release(musb->controller->parent);
++
++ return 0;
++}
++
++static void sunxi_musb_enable(struct musb *musb)
++{
++ struct sunxi_glue *glue = dev_get_drvdata(musb->controller->parent);
++
++ /* musb_core does not call us in a balanced manner */
++ if (test_and_set_bit(SUNXI_MUSB_FL_ENABLED, &glue->flags))
++ return;
++
++ schedule_work(&glue->work);
++}
++
++static void sunxi_musb_disable(struct musb *musb)
++{
++ struct sunxi_glue *glue = dev_get_drvdata(musb->controller->parent);
++
++ clear_bit(SUNXI_MUSB_FL_ENABLED, &glue->flags);
++}
++
++/*
++ * sunxi musb register layout
++ * 0x00 - 0x17 fifo regs, 1 long per fifo
++ * 0x40 - 0x57 generic control regs (power - frame)
++ * 0x80 - 0x8f ep control regs (addressed through hw_ep->regs, indexed)
++ * 0x90 - 0x97 fifo control regs (indexed)
++ * 0x98 - 0x9f multipoint / busctl regs (indexed)
++ * 0xc0 configdata reg
++ */
++
++static u32 sunxi_musb_fifo_offset(u8 epnum)
++{
++ return (epnum * 4);
++}
++
++static u32 sunxi_musb_ep_offset(u8 epnum, u16 offset)
++{
++ WARN_ONCE(offset != 0,
++ "sunxi_musb_ep_offset called with non 0 offset\n");
++
++ return 0x80; /* indexed, so ignore epnum */
++}
++
++static u32 sunxi_musb_busctl_offset(u8 epnum, u16 offset)
++{
++ return SUNXI_MUSB_TXFUNCADDR + offset;
++}
++
++static u8 sunxi_musb_readb(const void __iomem *addr, unsigned offset)
++{
++ if (addr == sunxi_musb->mregs) {
++ /* generic control or fifo control reg access */
++ switch (offset) {
++ case MUSB_FADDR:
++ return readb(addr + SUNXI_MUSB_FADDR);
++ case MUSB_POWER:
++ return readb(addr + SUNXI_MUSB_POWER);
++ case MUSB_INTRUSB:
++ return readb(addr + SUNXI_MUSB_INTRUSB);
++ case MUSB_INTRUSBE:
++ return readb(addr + SUNXI_MUSB_INTRUSBE);
++ case MUSB_INDEX:
++ return readb(addr + SUNXI_MUSB_INDEX);
++ case MUSB_TESTMODE:
++ return 0; /* No testmode on sunxi */
++ case MUSB_DEVCTL:
++ return readb(addr + SUNXI_MUSB_DEVCTL);
++ case MUSB_TXFIFOSZ:
++ return readb(addr + SUNXI_MUSB_TXFIFOSZ);
++ case MUSB_RXFIFOSZ:
++ return readb(addr + SUNXI_MUSB_RXFIFOSZ);
++ case MUSB_CONFIGDATA + 0x10: /* See musb_read_configdata() */
++ return readb(addr + SUNXI_MUSB_CONFIGDATA);
++ /* Offset for these is fixed by sunxi_musb_busctl_offset() */
++ case SUNXI_MUSB_TXFUNCADDR:
++ case SUNXI_MUSB_TXHUBADDR:
++ case SUNXI_MUSB_TXHUBPORT:
++ case SUNXI_MUSB_RXFUNCADDR:
++ case SUNXI_MUSB_RXHUBADDR:
++ case SUNXI_MUSB_RXHUBPORT:
++ /* multipoint / busctl reg access */
++ return readb(addr + offset);
++ default:
++ dev_err(sunxi_musb->controller->parent,
++ "Error unknown readb offset %u\n", offset);
++ return 0;
++ }
++ } else if (addr == (sunxi_musb->mregs + 0x80)) {
++ /* ep control reg access */
++ /* sunxi has a 2 byte hole before the txtype register */
++ if (offset >= MUSB_TXTYPE)
++ offset += 2;
++ return readb(addr + offset);
++ }
++
++ dev_err(sunxi_musb->controller->parent,
++ "Error unknown readb at 0x%x bytes offset\n",
++ (int)(addr - sunxi_musb->mregs));
++ return 0;
++}
++
++static void sunxi_musb_writeb(void __iomem *addr, unsigned offset, u8 data)
++{
++ if (addr == sunxi_musb->mregs) {
++ /* generic control or fifo control reg access */
++ switch (offset) {
++ case MUSB_FADDR:
++ return writeb(data, addr + SUNXI_MUSB_FADDR);
++ case MUSB_POWER:
++ return writeb(data, addr + SUNXI_MUSB_POWER);
++ case MUSB_INTRUSB:
++ return writeb(data, addr + SUNXI_MUSB_INTRUSB);
++ case MUSB_INTRUSBE:
++ return writeb(data, addr + SUNXI_MUSB_INTRUSBE);
++ case MUSB_INDEX:
++ return writeb(data, addr + SUNXI_MUSB_INDEX);
++ case MUSB_TESTMODE:
++ if (data)
++ dev_warn(sunxi_musb->controller->parent,
++ "sunxi-musb does not have testmode\n");
++ return;
++ case MUSB_DEVCTL:
++ return writeb(data, addr + SUNXI_MUSB_DEVCTL);
++ case MUSB_TXFIFOSZ:
++ return writeb(data, addr + SUNXI_MUSB_TXFIFOSZ);
++ case MUSB_RXFIFOSZ:
++ return writeb(data, addr + SUNXI_MUSB_RXFIFOSZ);
++ /* Offset for these is fixed by sunxi_musb_busctl_offset() */
++ case SUNXI_MUSB_TXFUNCADDR:
++ case SUNXI_MUSB_TXHUBADDR:
++ case SUNXI_MUSB_TXHUBPORT:
++ case SUNXI_MUSB_RXFUNCADDR:
++ case SUNXI_MUSB_RXHUBADDR:
++ case SUNXI_MUSB_RXHUBPORT:
++ /* multipoint / busctl reg access */
++ return writeb(data, addr + offset);
++ default:
++ dev_err(sunxi_musb->controller->parent,
++ "Error unknown writeb offset %u\n", offset);
++ return;
++ }
++ } else if (addr == (sunxi_musb->mregs + 0x80)) {
++ /* ep control reg access */
++ if (offset >= MUSB_TXTYPE)
++ offset += 2;
++ return writeb(data, addr + offset);
++ }
++
++ dev_err(sunxi_musb->controller->parent,
++ "Error unknown writeb at 0x%x bytes offset\n",
++ (int)(addr - sunxi_musb->mregs));
++}
++
++static u16 sunxi_musb_readw(const void __iomem *addr, unsigned offset)
++{
++ if (addr == sunxi_musb->mregs) {
++ /* generic control or fifo control reg access */
++ switch (offset) {
++ case MUSB_INTRTX:
++ return readw(addr + SUNXI_MUSB_INTRTX);
++ case MUSB_INTRRX:
++ return readw(addr + SUNXI_MUSB_INTRRX);
++ case MUSB_INTRTXE:
++ return readw(addr + SUNXI_MUSB_INTRTXE);
++ case MUSB_INTRRXE:
++ return readw(addr + SUNXI_MUSB_INTRRXE);
++ case MUSB_FRAME:
++ return readw(addr + SUNXI_MUSB_FRAME);
++ case MUSB_TXFIFOADD:
++ return readw(addr + SUNXI_MUSB_TXFIFOADD);
++ case MUSB_RXFIFOADD:
++ return readw(addr + SUNXI_MUSB_RXFIFOADD);
++ case MUSB_HWVERS:
++ return 0; /* sunxi musb version is not known */
++ default:
++ dev_err(sunxi_musb->controller->parent,
++ "Error unknown readw offset %u\n", offset);
++ return 0;
++ }
++ } else if (addr == (sunxi_musb->mregs + 0x80)) {
++ /* ep control reg access */
++ return readw(addr + offset);
++ }
++
++ dev_err(sunxi_musb->controller->parent,
++ "Error unknown readw at 0x%x bytes offset\n",
++ (int)(addr - sunxi_musb->mregs));
++ return 0;
++}
++
++static void sunxi_musb_writew(void __iomem *addr, unsigned offset, u16 data)
++{
++ if (addr == sunxi_musb->mregs) {
++ /* generic control or fifo control reg access */
++ switch (offset) {
++ case MUSB_INTRTX:
++ return writew(data, addr + SUNXI_MUSB_INTRTX);
++ case MUSB_INTRRX:
++ return writew(data, addr + SUNXI_MUSB_INTRRX);
++ case MUSB_INTRTXE:
++ return writew(data, addr + SUNXI_MUSB_INTRTXE);
++ case MUSB_INTRRXE:
++ return writew(data, addr + SUNXI_MUSB_INTRRXE);
++ case MUSB_FRAME:
++ return writew(data, addr + SUNXI_MUSB_FRAME);
++ case MUSB_TXFIFOADD:
++ return writew(data, addr + SUNXI_MUSB_TXFIFOADD);
++ case MUSB_RXFIFOADD:
++ return writew(data, addr + SUNXI_MUSB_RXFIFOADD);
++ default:
++ dev_err(sunxi_musb->controller->parent,
++ "Error unknown writew offset %u\n", offset);
++ return;
++ }
++ } else if (addr == (sunxi_musb->mregs + 0x80)) {
++ /* ep control reg access */
++ return writew(data, addr + offset);
++ }
++
++ dev_err(sunxi_musb->controller->parent,
++ "Error unknown writew at 0x%x bytes offset\n",
++ (int)(addr - sunxi_musb->mregs));
++}
++
++static const struct musb_platform_ops sunxi_musb_ops = {
++ .quirks = MUSB_INDEXED_EP,
++ .init = sunxi_musb_init,
++ .exit = sunxi_musb_exit,
++ .enable = sunxi_musb_enable,
++ .disable = sunxi_musb_disable,
++ .fifo_offset = sunxi_musb_fifo_offset,
++ .ep_offset = sunxi_musb_ep_offset,
++ .busctl_offset = sunxi_musb_busctl_offset,
++ .readb = sunxi_musb_readb,
++ .writeb = sunxi_musb_writeb,
++ .readw = sunxi_musb_readw,
++ .writew = sunxi_musb_writew,
++ .set_vbus = sunxi_musb_set_vbus,
++ .pre_root_reset_end = sunxi_musb_pre_root_reset_end,
++ .post_root_reset_end = sunxi_musb_post_root_reset_end,
++};
++
++/* Allwinner OTG supports up to 5 endpoints */
++#define SUNXI_MUSB_MAX_EP_NUM 6
++#define SUNXI_MUSB_RAM_BITS 11
++
++static struct musb_fifo_cfg sunxi_musb_mode_cfg[] = {
++ MUSB_EP_FIFO_SINGLE(1, FIFO_TX, 512),
++ MUSB_EP_FIFO_SINGLE(1, FIFO_RX, 512),
++ MUSB_EP_FIFO_SINGLE(2, FIFO_TX, 512),
++ MUSB_EP_FIFO_SINGLE(2, FIFO_RX, 512),
++ MUSB_EP_FIFO_SINGLE(3, FIFO_TX, 512),
++ MUSB_EP_FIFO_SINGLE(3, FIFO_RX, 512),
++ MUSB_EP_FIFO_SINGLE(4, FIFO_TX, 512),
++ MUSB_EP_FIFO_SINGLE(4, FIFO_RX, 512),
++ MUSB_EP_FIFO_SINGLE(5, FIFO_TX, 512),
++ MUSB_EP_FIFO_SINGLE(5, FIFO_RX, 512),
++};
++
++static struct musb_hdrc_config sunxi_musb_hdrc_config = {
++ .fifo_cfg = sunxi_musb_mode_cfg,
++ .fifo_cfg_size = ARRAY_SIZE(sunxi_musb_mode_cfg),
++ .multipoint = true,
++ .dyn_fifo = true,
++ .soft_con = true,
++ .num_eps = SUNXI_MUSB_MAX_EP_NUM,
++ .ram_bits = SUNXI_MUSB_RAM_BITS,
++ .dma = 0,
++};
++
++static int sunxi_musb_probe(struct platform_device *pdev)
++{
++ struct musb_hdrc_platform_data pdata;
++ struct platform_device_info pinfo;
++ struct sunxi_glue *glue;
++ struct device_node *np = pdev->dev.of_node;
++ int ret;
++
++ if (!np) {
++ dev_err(&pdev->dev, "Error no device tree node found\n");
++ return -EINVAL;
++ }
++
++ glue = devm_kzalloc(&pdev->dev, sizeof(*glue), GFP_KERNEL);
++ if (!glue)
++ return -ENOMEM;
++
++ memset(&pdata, 0, sizeof(pdata));
++ switch (of_usb_get_dr_mode(np)) {
++#if defined CONFIG_USB_MUSB_DUAL_ROLE || defined CONFIG_USB_MUSB_HOST
++ case USB_DR_MODE_HOST:
++ pdata.mode = MUSB_PORT_MODE_HOST;
++ break;
++#endif
++#ifdef CONFIG_USB_MUSB_DUAL_ROLE
++ case USB_DR_MODE_OTG:
++ glue->extcon = extcon_get_edev_by_phandle(&pdev->dev, 0);
++ if (IS_ERR(glue->extcon)) {
++ if (PTR_ERR(glue->extcon) == -EPROBE_DEFER)
++ return -EPROBE_DEFER;
++ dev_err(&pdev->dev, "Invalid or missing extcon\n");
++ return PTR_ERR(glue->extcon);
++ }
++ pdata.mode = MUSB_PORT_MODE_DUAL_ROLE;
++ break;
++#endif
++ default:
++ dev_err(&pdev->dev, "Invalid or missing 'dr_mode' property\n");
++ return -EINVAL;
++ }
++ pdata.platform_ops = &sunxi_musb_ops;
++ pdata.config = &sunxi_musb_hdrc_config;
++
++ glue->dev = &pdev->dev;
++ INIT_WORK(&glue->work, sunxi_musb_work);
++ glue->host_nb.notifier_call = sunxi_musb_host_notifier;
++
++ glue->clk = devm_clk_get(&pdev->dev, NULL);
++ if (IS_ERR(glue->clk)) {
++ dev_err(&pdev->dev, "Error getting clock: %ld\n",
++ PTR_ERR(glue->clk));
++ return PTR_ERR(glue->clk);
++ }
++
++ glue->phy = devm_phy_get(&pdev->dev, "usb");
++ if (IS_ERR(glue->phy)) {
++ if (PTR_ERR(glue->phy) == -EPROBE_DEFER)
++ return -EPROBE_DEFER;
++ dev_err(&pdev->dev, "Error getting phy %ld\n",
++ PTR_ERR(glue->phy));
++ return PTR_ERR(glue->phy);
++ }
++
++ glue->usb_phy = usb_phy_generic_register();
++ if (IS_ERR(glue->usb_phy)) {
++ dev_err(&pdev->dev, "Error registering usb-phy %ld\n",
++ PTR_ERR(glue->usb_phy));
++ return PTR_ERR(glue->usb_phy);
++ }
++
++ glue->xceiv = devm_usb_get_phy(&pdev->dev, USB_PHY_TYPE_USB2);
++ if (IS_ERR(glue->xceiv)) {
++ ret = PTR_ERR(glue->xceiv);
++ dev_err(&pdev->dev, "Error getting usb-phy %d\n", ret);
++ goto err_unregister_usb_phy;
++ }
++
++ platform_set_drvdata(pdev, glue);
++
++ memset(&pinfo, 0, sizeof(pinfo));
++ pinfo.name = "musb-hdrc";
++ pinfo.id = PLATFORM_DEVID_AUTO;
++ pinfo.parent = &pdev->dev;
++ pinfo.res = pdev->resource;
++ pinfo.num_res = pdev->num_resources;
++ pinfo.data = &pdata;
++ pinfo.size_data = sizeof(pdata);
++
++ glue->musb = platform_device_register_full(&pinfo);
++ if (IS_ERR(glue->musb)) {
++ ret = PTR_ERR(glue->musb);
++ dev_err(&pdev->dev, "Error registering musb dev: %d\n", ret);
++ goto err_unregister_usb_phy;
++ }
++
++ return 0;
++
++err_unregister_usb_phy:
++ usb_phy_generic_unregister(glue->usb_phy);
++ return ret;
++}
++
++static int sunxi_musb_remove(struct platform_device *pdev)
++{
++ struct sunxi_glue *glue = platform_get_drvdata(pdev);
++ struct platform_device *usb_phy = glue->usb_phy;
++
++ platform_device_unregister(glue->musb); /* Frees glue ! */
++ usb_phy_generic_unregister(usb_phy);
++
++ return 0;
++}
++
++static const struct of_device_id sunxi_musb_match[] = {
++ { .compatible = "allwinner,sun4i-a10-musb", },
++ {}
++};
++
++static struct platform_driver sunxi_musb_driver = {
++ .probe = sunxi_musb_probe,
++ .remove = sunxi_musb_remove,
++ .driver = {
++ .name = "musb-sunxi",
++ .of_match_table = sunxi_musb_match,
++ },
++};
++module_platform_driver(sunxi_musb_driver);
++
++MODULE_DESCRIPTION("Allwinner sunxi MUSB Glue Layer");
++MODULE_AUTHOR("Hans de Goede <hdegoede@redhat.com>");
++MODULE_LICENSE("GPL v2");
--- /dev/null
+From 132e23775779cc895c37f7883c33a60a1a8a7cdd Mon Sep 17 00:00:00 2001
+From: Hans de Goede <hdegoede@redhat.com>
+Date: Wed, 8 Jul 2015 16:41:39 +0200
+Subject: [PATCH] usb: musb: sunxi: Add support for musb controller in A31 SoC
+
+The A31 SoC uses the same musb controller as found in earlier SoCs, but it
+is hooked up slightly different. Its SRAM is private and no longer controlled
+through the SRAM controller, and its reset is controlled via a separate
+reset controller. This commit adds support for this setup.
+
+Signed-off-by: Hans de Goede <hdegoede@redhat.com>
+Signed-off-by: Felipe Balbi <balbi@ti.com>
+---
+ .../bindings/usb/allwinner,sun4i-a10-musb.txt | 3 +-
+ drivers/usb/musb/sunxi.c | 50 +++++++++++++++++++---
+ 2 files changed, 46 insertions(+), 7 deletions(-)
+
+diff --git a/Documentation/devicetree/bindings/usb/allwinner,sun4i-a10-musb.txt b/Documentation/devicetree/bindings/usb/allwinner,sun4i-a10-musb.txt
+index 9254a6c..fde180b 100644
+--- a/Documentation/devicetree/bindings/usb/allwinner,sun4i-a10-musb.txt
++++ b/Documentation/devicetree/bindings/usb/allwinner,sun4i-a10-musb.txt
+@@ -2,9 +2,10 @@ Allwinner sun4i A10 musb DRC/OTG controller
+ -------------------------------------------
+
+ Required properties:
+- - compatible : "allwinner,sun4i-a10-musb"
++ - compatible : "allwinner,sun4i-a10-musb" or "allwinner,sun6i-a31-musb"
+ - reg : mmio address range of the musb controller
+ - clocks : clock specifier for the musb controller ahb gate clock
++ - reset : reset specifier for the ahb reset (A31 and newer only)
+ - interrupts : interrupt to which the musb controller is connected
+ - interrupt-names : must be "mc"
+ - phys : phy specifier for the otg phy
+diff --git a/drivers/usb/musb/sunxi.c b/drivers/usb/musb/sunxi.c
+index 00d7248..df2f75e 100644
+--- a/drivers/usb/musb/sunxi.c
++++ b/drivers/usb/musb/sunxi.c
+@@ -26,6 +26,7 @@
+ #include <linux/of.h>
+ #include <linux/phy/phy-sun4i-usb.h>
+ #include <linux/platform_device.h>
++#include <linux/reset.h>
+ #include <linux/soc/sunxi/sunxi_sram.h>
+ #include <linux/usb/musb.h>
+ #include <linux/usb/of.h>
+@@ -70,6 +71,8 @@
+ #define SUNXI_MUSB_FL_HOSTMODE_PEND 2
+ #define SUNXI_MUSB_FL_VBUS_ON 3
+ #define SUNXI_MUSB_FL_PHY_ON 4
++#define SUNXI_MUSB_FL_HAS_SRAM 5
++#define SUNXI_MUSB_FL_HAS_RESET 6
+
+ /* Our read/write methods need access and do not get passed in a musb ref :| */
+ static struct musb *sunxi_musb;
+@@ -78,6 +81,7 @@ struct sunxi_glue {
+ struct device *dev;
+ struct platform_device *musb;
+ struct clk *clk;
++ struct reset_control *rst;
+ struct phy *phy;
+ struct platform_device *usb_phy;
+ struct usb_phy *xceiv;
+@@ -229,14 +233,22 @@ static int sunxi_musb_init(struct musb *musb)
+ musb->phy = glue->phy;
+ musb->xceiv = glue->xceiv;
+
+- ret = sunxi_sram_claim(musb->controller->parent);
+- if (ret)
+- return ret;
++ if (test_bit(SUNXI_MUSB_FL_HAS_SRAM, &glue->flags)) {
++ ret = sunxi_sram_claim(musb->controller->parent);
++ if (ret)
++ return ret;
++ }
+
+ ret = clk_prepare_enable(glue->clk);
+ if (ret)
+ goto error_sram_release;
+
++ if (test_bit(SUNXI_MUSB_FL_HAS_RESET, &glue->flags)) {
++ ret = reset_control_deassert(glue->rst);
++ if (ret)
++ goto error_clk_disable;
++ }
++
+ writeb(SUNXI_MUSB_VEND0_PIO_MODE, musb->mregs + SUNXI_MUSB_VEND0);
+
+ /* Register notifier before calling phy_init() */
+@@ -244,7 +256,7 @@ static int sunxi_musb_init(struct musb *musb)
+ ret = extcon_register_notifier(glue->extcon, EXTCON_USB_HOST,
+ &glue->host_nb);
+ if (ret)
+- goto error_clk_disable;
++ goto error_reset_assert;
+ }
+
+ ret = phy_init(glue->phy);
+@@ -273,10 +285,14 @@ static int sunxi_musb_init(struct musb *musb)
+ if (musb->port_mode == MUSB_PORT_MODE_DUAL_ROLE)
+ extcon_unregister_notifier(glue->extcon, EXTCON_USB_HOST,
+ &glue->host_nb);
++error_reset_assert:
++ if (test_bit(SUNXI_MUSB_FL_HAS_RESET, &glue->flags))
++ reset_control_assert(glue->rst);
+ error_clk_disable:
+ clk_disable_unprepare(glue->clk);
+ error_sram_release:
+- sunxi_sram_release(musb->controller->parent);
++ if (test_bit(SUNXI_MUSB_FL_HAS_SRAM, &glue->flags))
++ sunxi_sram_release(musb->controller->parent);
+ return ret;
+ }
+
+@@ -296,8 +312,12 @@ static int sunxi_musb_exit(struct musb *musb)
+ extcon_unregister_notifier(glue->extcon, EXTCON_USB_HOST,
+ &glue->host_nb);
+
++ if (test_bit(SUNXI_MUSB_FL_HAS_RESET, &glue->flags))
++ reset_control_assert(glue->rst);
++
+ clk_disable_unprepare(glue->clk);
+- sunxi_sram_release(musb->controller->parent);
++ if (test_bit(SUNXI_MUSB_FL_HAS_SRAM, &glue->flags))
++ sunxi_sram_release(musb->controller->parent);
+
+ return 0;
+ }
+@@ -617,6 +637,12 @@ static int sunxi_musb_probe(struct platform_device *pdev)
+ INIT_WORK(&glue->work, sunxi_musb_work);
+ glue->host_nb.notifier_call = sunxi_musb_host_notifier;
+
++ if (of_device_is_compatible(np, "allwinner,sun4i-a10-musb"))
++ set_bit(SUNXI_MUSB_FL_HAS_SRAM, &glue->flags);
++
++ if (of_device_is_compatible(np, "allwinner,sun6i-a31-musb"))
++ set_bit(SUNXI_MUSB_FL_HAS_RESET, &glue->flags);
++
+ glue->clk = devm_clk_get(&pdev->dev, NULL);
+ if (IS_ERR(glue->clk)) {
+ dev_err(&pdev->dev, "Error getting clock: %ld\n",
+@@ -624,6 +650,17 @@ static int sunxi_musb_probe(struct platform_device *pdev)
+ return PTR_ERR(glue->clk);
+ }
+
++ if (test_bit(SUNXI_MUSB_FL_HAS_RESET, &glue->flags)) {
++ glue->rst = devm_reset_control_get(&pdev->dev, NULL);
++ if (IS_ERR(glue->rst)) {
++ if (PTR_ERR(glue->rst) == -EPROBE_DEFER)
++ return -EPROBE_DEFER;
++ dev_err(&pdev->dev, "Error getting reset %ld\n",
++ PTR_ERR(glue->rst));
++ return PTR_ERR(glue->rst);
++ }
++ }
++
+ glue->phy = devm_phy_get(&pdev->dev, "usb");
+ if (IS_ERR(glue->phy)) {
+ if (PTR_ERR(glue->phy) == -EPROBE_DEFER)
+@@ -685,6 +722,7 @@ static int sunxi_musb_remove(struct platform_device *pdev)
+
+ static const struct of_device_id sunxi_musb_match[] = {
+ { .compatible = "allwinner,sun4i-a10-musb", },
++ { .compatible = "allwinner,sun6i-a31-musb", },
+ {}
+ };
+
--- /dev/null
+Index: linux-4.1.3/arch/arm/boot/dts/sun7i-a20.dtsi
+===================================================================
+--- linux-4.1.3.orig/arch/arm/boot/dts/sun7i-a20.dtsi
++++ linux-4.1.3/arch/arm/boot/dts/sun7i-a20.dtsi
+@@ -679,6 +679,14 @@
+ status = "disabled";
+ };
+
++ crypto: crypto-engine@01c15000 {
++ compatible = "allwinner,sun7i-a20-crypto";
++ reg = <0x01c15000 0x1000>;
++ interrupts = <0 86 4>;
++ clocks = <&ahb_gates 5>, <&ss_clk>;
++ clock-names = "ahb", "mod";
++ };
++
+ spi2: spi@01c17000 {
+ compatible = "allwinner,sun4i-a10-spi";
+ reg = <0x01c17000 0x1000>;
--- /dev/null
+From 56ba8c5814a859dd94667643a3bc22984efd1521 Mon Sep 17 00:00:00 2001
+From: LABBE Corentin <clabbe.montjoie@gmail.com>
+Date: Fri, 17 Jul 2015 16:39:38 +0200
+Subject: [PATCH] ARM: sun4i: dt: Add Security System to A10 SoC DTS
+
+The Security System is a hardware cryptographic accelerator that support
+AES/MD5/SHA1/DES/3DES/PRNG algorithms.
+It could be found on many Allwinner SoC.
+
+This patch enable the Security System on the Allwinner A10 SoC Device-tree.
+
+Signed-off-by: LABBE Corentin <clabbe.montjoie@gmail.com>
+Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
+---
+ arch/arm/boot/dts/sun4i-a10.dtsi | 8 ++++++++
+ 1 file changed, 8 insertions(+)
+
+diff --git a/arch/arm/boot/dts/sun4i-a10.dtsi b/arch/arm/boot/dts/sun4i-a10.dtsi
+index 61c03d1..551e3d1 100644
+--- a/arch/arm/boot/dts/sun4i-a10.dtsi
++++ b/arch/arm/boot/dts/sun4i-a10.dtsi
+@@ -643,6 +643,14 @@
+ status = "disabled";
+ };
+
++ crypto: crypto-engine@01c15000 {
++ compatible = "allwinner,sun4i-a10-crypto";
++ reg = <0x01c15000 0x1000>;
++ interrupts = <86>;
++ clocks = <&ahb_gates 5>, <&ss_clk>;
++ clock-names = "ahb", "mod";
++ };
++
+ spi2: spi@01c17000 {
+ compatible = "allwinner,sun4i-a10-spi";
+ reg = <0x01c17000 0x1000>;
--- /dev/null
+From 6298e948215f2a3eb8a9af5c490d025deb66f179 Mon Sep 17 00:00:00 2001
+From: LABBE Corentin <clabbe.montjoie@gmail.com>
+Date: Fri, 17 Jul 2015 16:39:41 +0200
+Subject: [PATCH] crypto: sunxi-ss - Add Allwinner Security System crypto
+ accelerator
+
+Add support for the Security System included in Allwinner SoC A20.
+The Security System is a hardware cryptographic accelerator that support:
+- MD5 and SHA1 hash algorithms
+- AES block cipher in CBC/ECB mode with 128/196/256bits keys.
+- DES and 3DES block cipher in CBC/ECB mode
+
+Signed-off-by: LABBE Corentin <clabbe.montjoie@gmail.com>
+Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
+---
+ drivers/crypto/Kconfig | 17 +
+ drivers/crypto/Makefile | 1 +
+ drivers/crypto/sunxi-ss/Makefile | 2 +
+ drivers/crypto/sunxi-ss/sun4i-ss-cipher.c | 542 ++++++++++++++++++++++++++++++
+ drivers/crypto/sunxi-ss/sun4i-ss-core.c | 403 ++++++++++++++++++++++
+ drivers/crypto/sunxi-ss/sun4i-ss-hash.c | 492 +++++++++++++++++++++++++++
+ drivers/crypto/sunxi-ss/sun4i-ss.h | 199 +++++++++++
+ 7 files changed, 1656 insertions(+)
+ create mode 100644 drivers/crypto/sunxi-ss/Makefile
+ create mode 100644 drivers/crypto/sunxi-ss/sun4i-ss-cipher.c
+ create mode 100644 drivers/crypto/sunxi-ss/sun4i-ss-core.c
+ create mode 100644 drivers/crypto/sunxi-ss/sun4i-ss-hash.c
+ create mode 100644 drivers/crypto/sunxi-ss/sun4i-ss.h
+
+diff --git a/drivers/crypto/Kconfig b/drivers/crypto/Kconfig
+index 4044125..07bc7aa 100644
+--- a/drivers/crypto/Kconfig
++++ b/drivers/crypto/Kconfig
+@@ -480,4 +480,21 @@ config CRYPTO_DEV_IMGTEC_HASH
+ hardware hash accelerator. Supporting MD5/SHA1/SHA224/SHA256
+ hashing algorithms.
+
++config CRYPTO_DEV_SUN4I_SS
++ tristate "Support for Allwinner Security System cryptographic accelerator"
++ depends on ARCH_SUNXI
++ select CRYPTO_MD5
++ select CRYPTO_SHA1
++ select CRYPTO_AES
++ select CRYPTO_DES
++ select CRYPTO_BLKCIPHER
++ help
++ Some Allwinner SoC have a crypto accelerator named
++ Security System. Select this if you want to use it.
++ The Security System handle AES/DES/3DES ciphers in CBC mode
++ and SHA1 and MD5 hash algorithms.
++
++ To compile this driver as a module, choose M here: the module
++ will be called sun4i-ss.
++
+ endif # CRYPTO_HW
+diff --git a/drivers/crypto/Makefile b/drivers/crypto/Makefile
+index e35c07a..c3ced6f 100644
+--- a/drivers/crypto/Makefile
++++ b/drivers/crypto/Makefile
+@@ -28,3 +28,4 @@ obj-$(CONFIG_CRYPTO_DEV_UX500) += ux500/
+ obj-$(CONFIG_CRYPTO_DEV_QAT) += qat/
+ obj-$(CONFIG_CRYPTO_DEV_QCE) += qce/
+ obj-$(CONFIG_CRYPTO_DEV_VMX) += vmx/
++obj-$(CONFIG_CRYPTO_DEV_SUN4I_SS) += sunxi-ss/
+diff --git a/drivers/crypto/sunxi-ss/Makefile b/drivers/crypto/sunxi-ss/Makefile
+new file mode 100644
+index 0000000..8f4c7a2
+--- /dev/null
++++ b/drivers/crypto/sunxi-ss/Makefile
+@@ -0,0 +1,2 @@
++obj-$(CONFIG_CRYPTO_DEV_SUN4I_SS) += sun4i-ss.o
++sun4i-ss-y += sun4i-ss-core.o sun4i-ss-hash.o sun4i-ss-cipher.o
+diff --git a/drivers/crypto/sunxi-ss/sun4i-ss-cipher.c b/drivers/crypto/sunxi-ss/sun4i-ss-cipher.c
+new file mode 100644
+index 0000000..e070c31
+--- /dev/null
++++ b/drivers/crypto/sunxi-ss/sun4i-ss-cipher.c
+@@ -0,0 +1,542 @@
++/*
++ * sun4i-ss-cipher.c - hardware cryptographic accelerator for Allwinner A20 SoC
++ *
++ * Copyright (C) 2013-2015 Corentin LABBE <clabbe.montjoie@gmail.com>
++ *
++ * This file add support for AES cipher with 128,192,256 bits
++ * keysize in CBC and ECB mode.
++ * Add support also for DES and 3DES in CBC and ECB mode.
++ *
++ * You could find the datasheet in Documentation/arm/sunxi/README
++ *
++ * This program is free software; you can redistribute it and/or modify
++ * it under the terms of the GNU General Public License as published by
++ * the Free Software Foundation; either version 2 of the License, or
++ * (at your option) any later version.
++ */
++#include "sun4i-ss.h"
++
++static int sun4i_ss_opti_poll(struct ablkcipher_request *areq)
++{
++ struct crypto_ablkcipher *tfm = crypto_ablkcipher_reqtfm(areq);
++ struct sun4i_tfm_ctx *op = crypto_ablkcipher_ctx(tfm);
++ struct sun4i_ss_ctx *ss = op->ss;
++ unsigned int ivsize = crypto_ablkcipher_ivsize(tfm);
++ struct sun4i_cipher_req_ctx *ctx = ablkcipher_request_ctx(areq);
++ u32 mode = ctx->mode;
++ /* when activating SS, the default FIFO space is SS_RX_DEFAULT(32) */
++ u32 rx_cnt = SS_RX_DEFAULT;
++ u32 tx_cnt = 0;
++ u32 spaces;
++ u32 v;
++ int i, err = 0;
++ unsigned int ileft = areq->nbytes;
++ unsigned int oleft = areq->nbytes;
++ unsigned int todo;
++ struct sg_mapping_iter mi, mo;
++ unsigned int oi, oo; /* offset for in and out */
++
++ if (areq->nbytes == 0)
++ return 0;
++
++ if (!areq->info) {
++ dev_err_ratelimited(ss->dev, "ERROR: Empty IV\n");
++ return -EINVAL;
++ }
++
++ if (!areq->src || !areq->dst) {
++ dev_err_ratelimited(ss->dev, "ERROR: Some SGs are NULL\n");
++ return -EINVAL;
++ }
++
++ spin_lock_bh(&ss->slock);
++
++ for (i = 0; i < op->keylen; i += 4)
++ writel(*(op->key + i / 4), ss->base + SS_KEY0 + i);
++
++ if (areq->info) {
++ for (i = 0; i < 4 && i < ivsize / 4; i++) {
++ v = *(u32 *)(areq->info + i * 4);
++ writel(v, ss->base + SS_IV0 + i * 4);
++ }
++ }
++ writel(mode, ss->base + SS_CTL);
++
++ sg_miter_start(&mi, areq->src, sg_nents(areq->src),
++ SG_MITER_FROM_SG | SG_MITER_ATOMIC);
++ sg_miter_start(&mo, areq->dst, sg_nents(areq->dst),
++ SG_MITER_TO_SG | SG_MITER_ATOMIC);
++ sg_miter_next(&mi);
++ sg_miter_next(&mo);
++ if (!mi.addr || !mo.addr) {
++ dev_err_ratelimited(ss->dev, "ERROR: sg_miter return null\n");
++ err = -EINVAL;
++ goto release_ss;
++ }
++
++ ileft = areq->nbytes / 4;
++ oleft = areq->nbytes / 4;
++ oi = 0;
++ oo = 0;
++ do {
++ todo = min3(rx_cnt, ileft, (mi.length - oi) / 4);
++ if (todo > 0) {
++ ileft -= todo;
++ writesl(ss->base + SS_RXFIFO, mi.addr + oi, todo);
++ oi += todo * 4;
++ }
++ if (oi == mi.length) {
++ sg_miter_next(&mi);
++ oi = 0;
++ }
++
++ spaces = readl(ss->base + SS_FCSR);
++ rx_cnt = SS_RXFIFO_SPACES(spaces);
++ tx_cnt = SS_TXFIFO_SPACES(spaces);
++
++ todo = min3(tx_cnt, oleft, (mo.length - oo) / 4);
++ if (todo > 0) {
++ oleft -= todo;
++ readsl(ss->base + SS_TXFIFO, mo.addr + oo, todo);
++ oo += todo * 4;
++ }
++ if (oo == mo.length) {
++ sg_miter_next(&mo);
++ oo = 0;
++ }
++ } while (mo.length > 0);
++
++ if (areq->info) {
++ for (i = 0; i < 4 && i < ivsize / 4; i++) {
++ v = readl(ss->base + SS_IV0 + i * 4);
++ *(u32 *)(areq->info + i * 4) = v;
++ }
++ }
++
++release_ss:
++ sg_miter_stop(&mi);
++ sg_miter_stop(&mo);
++ writel(0, ss->base + SS_CTL);
++ spin_unlock_bh(&ss->slock);
++ return err;
++}
++
++/* Generic function that support SG with size not multiple of 4 */
++static int sun4i_ss_cipher_poll(struct ablkcipher_request *areq)
++{
++ struct crypto_ablkcipher *tfm = crypto_ablkcipher_reqtfm(areq);
++ struct sun4i_tfm_ctx *op = crypto_ablkcipher_ctx(tfm);
++ struct sun4i_ss_ctx *ss = op->ss;
++ int no_chunk = 1;
++ struct scatterlist *in_sg = areq->src;
++ struct scatterlist *out_sg = areq->dst;
++ unsigned int ivsize = crypto_ablkcipher_ivsize(tfm);
++ struct sun4i_cipher_req_ctx *ctx = ablkcipher_request_ctx(areq);
++ u32 mode = ctx->mode;
++ /* when activating SS, the default FIFO space is SS_RX_DEFAULT(32) */
++ u32 rx_cnt = SS_RX_DEFAULT;
++ u32 tx_cnt = 0;
++ u32 v;
++ u32 spaces;
++ int i, err = 0;
++ unsigned int ileft = areq->nbytes;
++ unsigned int oleft = areq->nbytes;
++ unsigned int todo;
++ struct sg_mapping_iter mi, mo;
++ unsigned int oi, oo; /* offset for in and out */
++ char buf[4 * SS_RX_MAX];/* buffer for linearize SG src */
++ char bufo[4 * SS_TX_MAX]; /* buffer for linearize SG dst */
++ unsigned int ob = 0; /* offset in buf */
++ unsigned int obo = 0; /* offset in bufo*/
++ unsigned int obl = 0; /* length of data in bufo */
++
++ if (areq->nbytes == 0)
++ return 0;
++
++ if (!areq->info) {
++ dev_err_ratelimited(ss->dev, "ERROR: Empty IV\n");
++ return -EINVAL;
++ }
++
++ if (!areq->src || !areq->dst) {
++ dev_err_ratelimited(ss->dev, "ERROR: Some SGs are NULL\n");
++ return -EINVAL;
++ }
++
++ /*
++ * if we have only SGs with size multiple of 4,
++ * we can use the SS optimized function
++ */
++ while (in_sg && no_chunk == 1) {
++ if ((in_sg->length % 4) != 0)
++ no_chunk = 0;
++ in_sg = sg_next(in_sg);
++ }
++ while (out_sg && no_chunk == 1) {
++ if ((out_sg->length % 4) != 0)
++ no_chunk = 0;
++ out_sg = sg_next(out_sg);
++ }
++
++ if (no_chunk == 1)
++ return sun4i_ss_opti_poll(areq);
++
++ spin_lock_bh(&ss->slock);
++
++ for (i = 0; i < op->keylen; i += 4)
++ writel(*(op->key + i / 4), ss->base + SS_KEY0 + i);
++
++ if (areq->info) {
++ for (i = 0; i < 4 && i < ivsize / 4; i++) {
++ v = *(u32 *)(areq->info + i * 4);
++ writel(v, ss->base + SS_IV0 + i * 4);
++ }
++ }
++ writel(mode, ss->base + SS_CTL);
++
++ sg_miter_start(&mi, areq->src, sg_nents(areq->src),
++ SG_MITER_FROM_SG | SG_MITER_ATOMIC);
++ sg_miter_start(&mo, areq->dst, sg_nents(areq->dst),
++ SG_MITER_TO_SG | SG_MITER_ATOMIC);
++ sg_miter_next(&mi);
++ sg_miter_next(&mo);
++ if (!mi.addr || !mo.addr) {
++ dev_err_ratelimited(ss->dev, "ERROR: sg_miter return null\n");
++ err = -EINVAL;
++ goto release_ss;
++ }
++ ileft = areq->nbytes;
++ oleft = areq->nbytes;
++ oi = 0;
++ oo = 0;
++
++ while (oleft > 0) {
++ if (ileft > 0) {
++ /*
++ * todo is the number of consecutive 4byte word that we
++ * can read from current SG
++ */
++ todo = min3(rx_cnt, ileft / 4, (mi.length - oi) / 4);
++ if (todo > 0 && ob == 0) {
++ writesl(ss->base + SS_RXFIFO, mi.addr + oi,
++ todo);
++ ileft -= todo * 4;
++ oi += todo * 4;
++ } else {
++ /*
++ * not enough consecutive bytes, so we need to
++ * linearize in buf. todo is in bytes
++ * After that copy, if we have a multiple of 4
++ * we need to be able to write all buf in one
++ * pass, so it is why we min() with rx_cnt
++ */
++ todo = min3(rx_cnt * 4 - ob, ileft,
++ mi.length - oi);
++ memcpy(buf + ob, mi.addr + oi, todo);
++ ileft -= todo;
++ oi += todo;
++ ob += todo;
++ if (ob % 4 == 0) {
++ writesl(ss->base + SS_RXFIFO, buf,
++ ob / 4);
++ ob = 0;
++ }
++ }
++ if (oi == mi.length) {
++ sg_miter_next(&mi);
++ oi = 0;
++ }
++ }
++
++ spaces = readl(ss->base + SS_FCSR);
++ rx_cnt = SS_RXFIFO_SPACES(spaces);
++ tx_cnt = SS_TXFIFO_SPACES(spaces);
++ dev_dbg(ss->dev, "%x %u/%u %u/%u cnt=%u %u/%u %u/%u cnt=%u %u %u\n",
++ mode,
++ oi, mi.length, ileft, areq->nbytes, rx_cnt,
++ oo, mo.length, oleft, areq->nbytes, tx_cnt,
++ todo, ob);
++
++ if (tx_cnt == 0)
++ continue;
++ /* todo in 4bytes word */
++ todo = min3(tx_cnt, oleft / 4, (mo.length - oo) / 4);
++ if (todo > 0) {
++ readsl(ss->base + SS_TXFIFO, mo.addr + oo, todo);
++ oleft -= todo * 4;
++ oo += todo * 4;
++ if (oo == mo.length) {
++ sg_miter_next(&mo);
++ oo = 0;
++ }
++ } else {
++ /*
++ * read obl bytes in bufo, we read at maximum for
++ * emptying the device
++ */
++ readsl(ss->base + SS_TXFIFO, bufo, tx_cnt);
++ obl = tx_cnt * 4;
++ obo = 0;
++ do {
++ /*
++ * how many bytes we can copy ?
++ * no more than remaining SG size
++ * no more than remaining buffer
++ * no need to test against oleft
++ */
++ todo = min(mo.length - oo, obl - obo);
++ memcpy(mo.addr + oo, bufo + obo, todo);
++ oleft -= todo;
++ obo += todo;
++ oo += todo;
++ if (oo == mo.length) {
++ sg_miter_next(&mo);
++ oo = 0;
++ }
++ } while (obo < obl);
++ /* bufo must be fully used here */
++ }
++ }
++ if (areq->info) {
++ for (i = 0; i < 4 && i < ivsize / 4; i++) {
++ v = readl(ss->base + SS_IV0 + i * 4);
++ *(u32 *)(areq->info + i * 4) = v;
++ }
++ }
++
++release_ss:
++ sg_miter_stop(&mi);
++ sg_miter_stop(&mo);
++ writel(0, ss->base + SS_CTL);
++ spin_unlock_bh(&ss->slock);
++
++ return err;
++}
++
++/* CBC AES */
++int sun4i_ss_cbc_aes_encrypt(struct ablkcipher_request *areq)
++{
++ struct crypto_ablkcipher *tfm = crypto_ablkcipher_reqtfm(areq);
++ struct sun4i_tfm_ctx *op = crypto_ablkcipher_ctx(tfm);
++ struct sun4i_cipher_req_ctx *rctx = ablkcipher_request_ctx(areq);
++
++ rctx->mode = SS_OP_AES | SS_CBC | SS_ENABLED | SS_ENCRYPTION |
++ op->keymode;
++ return sun4i_ss_cipher_poll(areq);
++}
++
++int sun4i_ss_cbc_aes_decrypt(struct ablkcipher_request *areq)
++{
++ struct crypto_ablkcipher *tfm = crypto_ablkcipher_reqtfm(areq);
++ struct sun4i_tfm_ctx *op = crypto_ablkcipher_ctx(tfm);
++ struct sun4i_cipher_req_ctx *rctx = ablkcipher_request_ctx(areq);
++
++ rctx->mode = SS_OP_AES | SS_CBC | SS_ENABLED | SS_DECRYPTION |
++ op->keymode;
++ return sun4i_ss_cipher_poll(areq);
++}
++
++/* ECB AES */
++int sun4i_ss_ecb_aes_encrypt(struct ablkcipher_request *areq)
++{
++ struct crypto_ablkcipher *tfm = crypto_ablkcipher_reqtfm(areq);
++ struct sun4i_tfm_ctx *op = crypto_ablkcipher_ctx(tfm);
++ struct sun4i_cipher_req_ctx *rctx = ablkcipher_request_ctx(areq);
++
++ rctx->mode = SS_OP_AES | SS_ECB | SS_ENABLED | SS_ENCRYPTION |
++ op->keymode;
++ return sun4i_ss_cipher_poll(areq);
++}
++
++int sun4i_ss_ecb_aes_decrypt(struct ablkcipher_request *areq)
++{
++ struct crypto_ablkcipher *tfm = crypto_ablkcipher_reqtfm(areq);
++ struct sun4i_tfm_ctx *op = crypto_ablkcipher_ctx(tfm);
++ struct sun4i_cipher_req_ctx *rctx = ablkcipher_request_ctx(areq);
++
++ rctx->mode = SS_OP_AES | SS_ECB | SS_ENABLED | SS_DECRYPTION |
++ op->keymode;
++ return sun4i_ss_cipher_poll(areq);
++}
++
++/* CBC DES */
++int sun4i_ss_cbc_des_encrypt(struct ablkcipher_request *areq)
++{
++ struct crypto_ablkcipher *tfm = crypto_ablkcipher_reqtfm(areq);
++ struct sun4i_tfm_ctx *op = crypto_ablkcipher_ctx(tfm);
++ struct sun4i_cipher_req_ctx *rctx = ablkcipher_request_ctx(areq);
++
++ rctx->mode = SS_OP_DES | SS_CBC | SS_ENABLED | SS_ENCRYPTION |
++ op->keymode;
++ return sun4i_ss_cipher_poll(areq);
++}
++
++int sun4i_ss_cbc_des_decrypt(struct ablkcipher_request *areq)
++{
++ struct crypto_ablkcipher *tfm = crypto_ablkcipher_reqtfm(areq);
++ struct sun4i_tfm_ctx *op = crypto_ablkcipher_ctx(tfm);
++ struct sun4i_cipher_req_ctx *rctx = ablkcipher_request_ctx(areq);
++
++ rctx->mode = SS_OP_DES | SS_CBC | SS_ENABLED | SS_DECRYPTION |
++ op->keymode;
++ return sun4i_ss_cipher_poll(areq);
++}
++
++/* ECB DES */
++int sun4i_ss_ecb_des_encrypt(struct ablkcipher_request *areq)
++{
++ struct crypto_ablkcipher *tfm = crypto_ablkcipher_reqtfm(areq);
++ struct sun4i_tfm_ctx *op = crypto_ablkcipher_ctx(tfm);
++ struct sun4i_cipher_req_ctx *rctx = ablkcipher_request_ctx(areq);
++
++ rctx->mode = SS_OP_DES | SS_ECB | SS_ENABLED | SS_ENCRYPTION |
++ op->keymode;
++ return sun4i_ss_cipher_poll(areq);
++}
++
++int sun4i_ss_ecb_des_decrypt(struct ablkcipher_request *areq)
++{
++ struct crypto_ablkcipher *tfm = crypto_ablkcipher_reqtfm(areq);
++ struct sun4i_tfm_ctx *op = crypto_ablkcipher_ctx(tfm);
++ struct sun4i_cipher_req_ctx *rctx = ablkcipher_request_ctx(areq);
++
++ rctx->mode = SS_OP_DES | SS_ECB | SS_ENABLED | SS_DECRYPTION |
++ op->keymode;
++ return sun4i_ss_cipher_poll(areq);
++}
++
++/* CBC 3DES */
++int sun4i_ss_cbc_des3_encrypt(struct ablkcipher_request *areq)
++{
++ struct crypto_ablkcipher *tfm = crypto_ablkcipher_reqtfm(areq);
++ struct sun4i_tfm_ctx *op = crypto_ablkcipher_ctx(tfm);
++ struct sun4i_cipher_req_ctx *rctx = ablkcipher_request_ctx(areq);
++
++ rctx->mode = SS_OP_3DES | SS_CBC | SS_ENABLED | SS_ENCRYPTION |
++ op->keymode;
++ return sun4i_ss_cipher_poll(areq);
++}
++
++int sun4i_ss_cbc_des3_decrypt(struct ablkcipher_request *areq)
++{
++ struct crypto_ablkcipher *tfm = crypto_ablkcipher_reqtfm(areq);
++ struct sun4i_tfm_ctx *op = crypto_ablkcipher_ctx(tfm);
++ struct sun4i_cipher_req_ctx *rctx = ablkcipher_request_ctx(areq);
++
++ rctx->mode = SS_OP_3DES | SS_CBC | SS_ENABLED | SS_DECRYPTION |
++ op->keymode;
++ return sun4i_ss_cipher_poll(areq);
++}
++
++/* ECB 3DES */
++int sun4i_ss_ecb_des3_encrypt(struct ablkcipher_request *areq)
++{
++ struct crypto_ablkcipher *tfm = crypto_ablkcipher_reqtfm(areq);
++ struct sun4i_tfm_ctx *op = crypto_ablkcipher_ctx(tfm);
++ struct sun4i_cipher_req_ctx *rctx = ablkcipher_request_ctx(areq);
++
++ rctx->mode = SS_OP_3DES | SS_ECB | SS_ENABLED | SS_ENCRYPTION |
++ op->keymode;
++ return sun4i_ss_cipher_poll(areq);
++}
++
++int sun4i_ss_ecb_des3_decrypt(struct ablkcipher_request *areq)
++{
++ struct crypto_ablkcipher *tfm = crypto_ablkcipher_reqtfm(areq);
++ struct sun4i_tfm_ctx *op = crypto_ablkcipher_ctx(tfm);
++ struct sun4i_cipher_req_ctx *rctx = ablkcipher_request_ctx(areq);
++
++ rctx->mode = SS_OP_3DES | SS_ECB | SS_ENABLED | SS_DECRYPTION |
++ op->keymode;
++ return sun4i_ss_cipher_poll(areq);
++}
++
++int sun4i_ss_cipher_init(struct crypto_tfm *tfm)
++{
++ struct sun4i_tfm_ctx *op = crypto_tfm_ctx(tfm);
++ struct crypto_alg *alg = tfm->__crt_alg;
++ struct sun4i_ss_alg_template *algt;
++
++ memset(op, 0, sizeof(struct sun4i_tfm_ctx));
++
++ algt = container_of(alg, struct sun4i_ss_alg_template, alg.crypto);
++ op->ss = algt->ss;
++
++ tfm->crt_ablkcipher.reqsize = sizeof(struct sun4i_cipher_req_ctx);
++
++ return 0;
++}
++
++/* check and set the AES key, prepare the mode to be used */
++int sun4i_ss_aes_setkey(struct crypto_ablkcipher *tfm, const u8 *key,
++ unsigned int keylen)
++{
++ struct sun4i_tfm_ctx *op = crypto_ablkcipher_ctx(tfm);
++ struct sun4i_ss_ctx *ss = op->ss;
++
++ switch (keylen) {
++ case 128 / 8:
++ op->keymode = SS_AES_128BITS;
++ break;
++ case 192 / 8:
++ op->keymode = SS_AES_192BITS;
++ break;
++ case 256 / 8:
++ op->keymode = SS_AES_256BITS;
++ break;
++ default:
++ dev_err(ss->dev, "ERROR: Invalid keylen %u\n", keylen);
++ crypto_ablkcipher_set_flags(tfm, CRYPTO_TFM_RES_BAD_KEY_LEN);
++ return -EINVAL;
++ }
++ op->keylen = keylen;
++ memcpy(op->key, key, keylen);
++ return 0;
++}
++
++/* check and set the DES key, prepare the mode to be used */
++int sun4i_ss_des_setkey(struct crypto_ablkcipher *tfm, const u8 *key,
++ unsigned int keylen)
++{
++ struct sun4i_tfm_ctx *op = crypto_ablkcipher_ctx(tfm);
++ struct sun4i_ss_ctx *ss = op->ss;
++ u32 flags;
++ u32 tmp[DES_EXPKEY_WORDS];
++ int ret;
++
++ if (unlikely(keylen != DES_KEY_SIZE)) {
++ dev_err(ss->dev, "Invalid keylen %u\n", keylen);
++ crypto_ablkcipher_set_flags(tfm, CRYPTO_TFM_RES_BAD_KEY_LEN);
++ return -EINVAL;
++ }
++
++ flags = crypto_ablkcipher_get_flags(tfm);
++
++ ret = des_ekey(tmp, key);
++ if (unlikely(ret == 0) && (flags & CRYPTO_TFM_REQ_WEAK_KEY)) {
++ crypto_ablkcipher_set_flags(tfm, CRYPTO_TFM_RES_WEAK_KEY);
++ dev_dbg(ss->dev, "Weak key %u\n", keylen);
++ return -EINVAL;
++ }
++
++ op->keylen = keylen;
++ memcpy(op->key, key, keylen);
++ return 0;
++}
++
++/* check and set the 3DES key, prepare the mode to be used */
++int sun4i_ss_des3_setkey(struct crypto_ablkcipher *tfm, const u8 *key,
++ unsigned int keylen)
++{
++ struct sun4i_tfm_ctx *op = crypto_ablkcipher_ctx(tfm);
++ struct sun4i_ss_ctx *ss = op->ss;
++
++ if (unlikely(keylen != 3 * DES_KEY_SIZE)) {
++ dev_err(ss->dev, "Invalid keylen %u\n", keylen);
++ crypto_ablkcipher_set_flags(tfm, CRYPTO_TFM_RES_BAD_KEY_LEN);
++ return -EINVAL;
++ }
++ op->keylen = keylen;
++ memcpy(op->key, key, keylen);
++ return 0;
++}
+diff --git a/drivers/crypto/sunxi-ss/sun4i-ss-core.c b/drivers/crypto/sunxi-ss/sun4i-ss-core.c
+new file mode 100644
+index 0000000..0b79b58
+--- /dev/null
++++ b/drivers/crypto/sunxi-ss/sun4i-ss-core.c
+@@ -0,0 +1,403 @@
++/*
++ * sun4i-ss-core.c - hardware cryptographic accelerator for Allwinner A20 SoC
++ *
++ * Copyright (C) 2013-2015 Corentin LABBE <clabbe.montjoie@gmail.com>
++ *
++ * Core file which registers crypto algorithms supported by the SS.
++ *
++ * You could find a link for the datasheet in Documentation/arm/sunxi/README
++ *
++ * This program is free software; you can redistribute it and/or modify
++ * it under the terms of the GNU General Public License as published by
++ * the Free Software Foundation; either version 2 of the License, or
++ * (at your option) any later version.
++ */
++#include <linux/clk.h>
++#include <linux/crypto.h>
++#include <linux/io.h>
++#include <linux/module.h>
++#include <linux/of.h>
++#include <linux/platform_device.h>
++#include <crypto/scatterwalk.h>
++#include <linux/scatterlist.h>
++#include <linux/interrupt.h>
++#include <linux/delay.h>
++
++#include "sun4i-ss.h"
++
++static struct sun4i_ss_alg_template ss_algs[] = {
++{ .type = CRYPTO_ALG_TYPE_AHASH,
++ .mode = SS_OP_MD5,
++ .alg.hash = {
++ .init = sun4i_hash_init,
++ .update = sun4i_hash_update,
++ .final = sun4i_hash_final,
++ .finup = sun4i_hash_finup,
++ .digest = sun4i_hash_digest,
++ .export = sun4i_hash_export_md5,
++ .import = sun4i_hash_import_md5,
++ .halg = {
++ .digestsize = MD5_DIGEST_SIZE,
++ .base = {
++ .cra_name = "md5",
++ .cra_driver_name = "md5-sun4i-ss",
++ .cra_priority = 300,
++ .cra_alignmask = 3,
++ .cra_flags = CRYPTO_ALG_TYPE_AHASH,
++ .cra_blocksize = MD5_HMAC_BLOCK_SIZE,
++ .cra_ctxsize = sizeof(struct sun4i_req_ctx),
++ .cra_module = THIS_MODULE,
++ .cra_type = &crypto_ahash_type,
++ .cra_init = sun4i_hash_crainit
++ }
++ }
++ }
++},
++{ .type = CRYPTO_ALG_TYPE_AHASH,
++ .mode = SS_OP_SHA1,
++ .alg.hash = {
++ .init = sun4i_hash_init,
++ .update = sun4i_hash_update,
++ .final = sun4i_hash_final,
++ .finup = sun4i_hash_finup,
++ .digest = sun4i_hash_digest,
++ .export = sun4i_hash_export_sha1,
++ .import = sun4i_hash_import_sha1,
++ .halg = {
++ .digestsize = SHA1_DIGEST_SIZE,
++ .base = {
++ .cra_name = "sha1",
++ .cra_driver_name = "sha1-sun4i-ss",
++ .cra_priority = 300,
++ .cra_alignmask = 3,
++ .cra_flags = CRYPTO_ALG_TYPE_AHASH,
++ .cra_blocksize = SHA1_BLOCK_SIZE,
++ .cra_ctxsize = sizeof(struct sun4i_req_ctx),
++ .cra_module = THIS_MODULE,
++ .cra_type = &crypto_ahash_type,
++ .cra_init = sun4i_hash_crainit
++ }
++ }
++ }
++},
++{ .type = CRYPTO_ALG_TYPE_ABLKCIPHER,
++ .alg.crypto = {
++ .cra_name = "cbc(aes)",
++ .cra_driver_name = "cbc-aes-sun4i-ss",
++ .cra_priority = 300,
++ .cra_blocksize = AES_BLOCK_SIZE,
++ .cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER,
++ .cra_ctxsize = sizeof(struct sun4i_tfm_ctx),
++ .cra_module = THIS_MODULE,
++ .cra_alignmask = 3,
++ .cra_type = &crypto_ablkcipher_type,
++ .cra_init = sun4i_ss_cipher_init,
++ .cra_ablkcipher = {
++ .min_keysize = AES_MIN_KEY_SIZE,
++ .max_keysize = AES_MAX_KEY_SIZE,
++ .ivsize = AES_BLOCK_SIZE,
++ .setkey = sun4i_ss_aes_setkey,
++ .encrypt = sun4i_ss_cbc_aes_encrypt,
++ .decrypt = sun4i_ss_cbc_aes_decrypt,
++ }
++ }
++},
++{ .type = CRYPTO_ALG_TYPE_ABLKCIPHER,
++ .alg.crypto = {
++ .cra_name = "ecb(aes)",
++ .cra_driver_name = "ecb-aes-sun4i-ss",
++ .cra_priority = 300,
++ .cra_blocksize = AES_BLOCK_SIZE,
++ .cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER,
++ .cra_ctxsize = sizeof(struct sun4i_tfm_ctx),
++ .cra_module = THIS_MODULE,
++ .cra_alignmask = 3,
++ .cra_type = &crypto_ablkcipher_type,
++ .cra_init = sun4i_ss_cipher_init,
++ .cra_ablkcipher = {
++ .min_keysize = AES_MIN_KEY_SIZE,
++ .max_keysize = AES_MAX_KEY_SIZE,
++ .ivsize = AES_BLOCK_SIZE,
++ .setkey = sun4i_ss_aes_setkey,
++ .encrypt = sun4i_ss_ecb_aes_encrypt,
++ .decrypt = sun4i_ss_ecb_aes_decrypt,
++ }
++ }
++},
++{ .type = CRYPTO_ALG_TYPE_ABLKCIPHER,
++ .alg.crypto = {
++ .cra_name = "cbc(des)",
++ .cra_driver_name = "cbc-des-sun4i-ss",
++ .cra_priority = 300,
++ .cra_blocksize = DES_BLOCK_SIZE,
++ .cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER,
++ .cra_ctxsize = sizeof(struct sun4i_req_ctx),
++ .cra_module = THIS_MODULE,
++ .cra_alignmask = 3,
++ .cra_type = &crypto_ablkcipher_type,
++ .cra_init = sun4i_ss_cipher_init,
++ .cra_u.ablkcipher = {
++ .min_keysize = DES_KEY_SIZE,
++ .max_keysize = DES_KEY_SIZE,
++ .ivsize = DES_BLOCK_SIZE,
++ .setkey = sun4i_ss_des_setkey,
++ .encrypt = sun4i_ss_cbc_des_encrypt,
++ .decrypt = sun4i_ss_cbc_des_decrypt,
++ }
++ }
++},
++{ .type = CRYPTO_ALG_TYPE_ABLKCIPHER,
++ .alg.crypto = {
++ .cra_name = "ecb(des)",
++ .cra_driver_name = "ecb-des-sun4i-ss",
++ .cra_priority = 300,
++ .cra_blocksize = DES_BLOCK_SIZE,
++ .cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER,
++ .cra_ctxsize = sizeof(struct sun4i_req_ctx),
++ .cra_module = THIS_MODULE,
++ .cra_alignmask = 3,
++ .cra_type = &crypto_ablkcipher_type,
++ .cra_init = sun4i_ss_cipher_init,
++ .cra_u.ablkcipher = {
++ .min_keysize = DES_KEY_SIZE,
++ .max_keysize = DES_KEY_SIZE,
++ .setkey = sun4i_ss_des_setkey,
++ .encrypt = sun4i_ss_ecb_des_encrypt,
++ .decrypt = sun4i_ss_ecb_des_decrypt,
++ }
++ }
++},
++{ .type = CRYPTO_ALG_TYPE_ABLKCIPHER,
++ .alg.crypto = {
++ .cra_name = "cbc(des3_ede)",
++ .cra_driver_name = "cbc-des3-sun4i-ss",
++ .cra_priority = 300,
++ .cra_blocksize = DES3_EDE_BLOCK_SIZE,
++ .cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER,
++ .cra_ctxsize = sizeof(struct sun4i_req_ctx),
++ .cra_module = THIS_MODULE,
++ .cra_alignmask = 3,
++ .cra_type = &crypto_ablkcipher_type,
++ .cra_init = sun4i_ss_cipher_init,
++ .cra_u.ablkcipher = {
++ .min_keysize = DES3_EDE_KEY_SIZE,
++ .max_keysize = DES3_EDE_KEY_SIZE,
++ .ivsize = DES3_EDE_BLOCK_SIZE,
++ .setkey = sun4i_ss_des3_setkey,
++ .encrypt = sun4i_ss_cbc_des3_encrypt,
++ .decrypt = sun4i_ss_cbc_des3_decrypt,
++ }
++ }
++},
++{ .type = CRYPTO_ALG_TYPE_ABLKCIPHER,
++ .alg.crypto = {
++ .cra_name = "ecb(des3_ede)",
++ .cra_driver_name = "ecb-des3-sun4i-ss",
++ .cra_priority = 300,
++ .cra_blocksize = DES3_EDE_BLOCK_SIZE,
++ .cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER,
++ .cra_ctxsize = sizeof(struct sun4i_req_ctx),
++ .cra_module = THIS_MODULE,
++ .cra_alignmask = 3,
++ .cra_type = &crypto_ablkcipher_type,
++ .cra_init = sun4i_ss_cipher_init,
++ .cra_u.ablkcipher = {
++ .min_keysize = DES3_EDE_KEY_SIZE,
++ .max_keysize = DES3_EDE_KEY_SIZE,
++ .ivsize = DES3_EDE_BLOCK_SIZE,
++ .setkey = sun4i_ss_des3_setkey,
++ .encrypt = sun4i_ss_ecb_des3_encrypt,
++ .decrypt = sun4i_ss_ecb_des3_decrypt,
++ }
++ }
++},
++};
++
++static int sun4i_ss_probe(struct platform_device *pdev)
++{
++ struct resource *res;
++ u32 v;
++ int err, i;
++ unsigned long cr;
++ const unsigned long cr_ahb = 24 * 1000 * 1000;
++ const unsigned long cr_mod = 150 * 1000 * 1000;
++ struct sun4i_ss_ctx *ss;
++
++ if (!pdev->dev.of_node)
++ return -ENODEV;
++
++ ss = devm_kzalloc(&pdev->dev, sizeof(*ss), GFP_KERNEL);
++ if (!ss)
++ return -ENOMEM;
++
++ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
++ ss->base = devm_ioremap_resource(&pdev->dev, res);
++ if (IS_ERR(ss->base)) {
++ dev_err(&pdev->dev, "Cannot request MMIO\n");
++ return PTR_ERR(ss->base);
++ }
++
++ ss->ssclk = devm_clk_get(&pdev->dev, "mod");
++ if (IS_ERR(ss->ssclk)) {
++ err = PTR_ERR(ss->ssclk);
++ dev_err(&pdev->dev, "Cannot get SS clock err=%d\n", err);
++ return err;
++ }
++ dev_dbg(&pdev->dev, "clock ss acquired\n");
++
++ ss->busclk = devm_clk_get(&pdev->dev, "ahb");
++ if (IS_ERR(ss->busclk)) {
++ err = PTR_ERR(ss->busclk);
++ dev_err(&pdev->dev, "Cannot get AHB SS clock err=%d\n", err);
++ return err;
++ }
++ dev_dbg(&pdev->dev, "clock ahb_ss acquired\n");
++
++ /* Enable both clocks */
++ err = clk_prepare_enable(ss->busclk);
++ if (err != 0) {
++ dev_err(&pdev->dev, "Cannot prepare_enable busclk\n");
++ return err;
++ }
++ err = clk_prepare_enable(ss->ssclk);
++ if (err != 0) {
++ dev_err(&pdev->dev, "Cannot prepare_enable ssclk\n");
++ goto error_ssclk;
++ }
++
++ /*
++ * Check that clock have the correct rates given in the datasheet
++ * Try to set the clock to the maximum allowed
++ */
++ err = clk_set_rate(ss->ssclk, cr_mod);
++ if (err != 0) {
++ dev_err(&pdev->dev, "Cannot set clock rate to ssclk\n");
++ goto error_clk;
++ }
++
++ /*
++ * The only impact on clocks below requirement are bad performance,
++ * so do not print "errors"
++ * warn on Overclocked clocks
++ */
++ cr = clk_get_rate(ss->busclk);
++ if (cr >= cr_ahb)
++ dev_dbg(&pdev->dev, "Clock bus %lu (%lu MHz) (must be >= %lu)\n",
++ cr, cr / 1000000, cr_ahb);
++ else
++ dev_warn(&pdev->dev, "Clock bus %lu (%lu MHz) (must be >= %lu)\n",
++ cr, cr / 1000000, cr_ahb);
++
++ cr = clk_get_rate(ss->ssclk);
++ if (cr <= cr_mod)
++ if (cr < cr_mod)
++ dev_warn(&pdev->dev, "Clock ss %lu (%lu MHz) (must be <= %lu)\n",
++ cr, cr / 1000000, cr_mod);
++ else
++ dev_dbg(&pdev->dev, "Clock ss %lu (%lu MHz) (must be <= %lu)\n",
++ cr, cr / 1000000, cr_mod);
++ else
++ dev_warn(&pdev->dev, "Clock ss is at %lu (%lu MHz) (must be <= %lu)\n",
++ cr, cr / 1000000, cr_mod);
++
++ /*
++ * Datasheet named it "Die Bonding ID"
++ * I expect to be a sort of Security System Revision number.
++ * Since the A80 seems to have an other version of SS
++ * this info could be useful
++ */
++ writel(SS_ENABLED, ss->base + SS_CTL);
++ v = readl(ss->base + SS_CTL);
++ v >>= 16;
++ v &= 0x07;
++ dev_info(&pdev->dev, "Die ID %d\n", v);
++ writel(0, ss->base + SS_CTL);
++
++ ss->dev = &pdev->dev;
++
++ spin_lock_init(&ss->slock);
++
++ for (i = 0; i < ARRAY_SIZE(ss_algs); i++) {
++ ss_algs[i].ss = ss;
++ switch (ss_algs[i].type) {
++ case CRYPTO_ALG_TYPE_ABLKCIPHER:
++ err = crypto_register_alg(&ss_algs[i].alg.crypto);
++ if (err != 0) {
++ dev_err(ss->dev, "Fail to register %s\n",
++ ss_algs[i].alg.crypto.cra_name);
++ goto error_alg;
++ }
++ break;
++ case CRYPTO_ALG_TYPE_AHASH:
++ err = crypto_register_ahash(&ss_algs[i].alg.hash);
++ if (err != 0) {
++ dev_err(ss->dev, "Fail to register %s\n",
++ ss_algs[i].alg.hash.halg.base.cra_name);
++ goto error_alg;
++ }
++ break;
++ }
++ }
++ platform_set_drvdata(pdev, ss);
++ return 0;
++error_alg:
++ i--;
++ for (; i >= 0; i--) {
++ switch (ss_algs[i].type) {
++ case CRYPTO_ALG_TYPE_ABLKCIPHER:
++ crypto_unregister_alg(&ss_algs[i].alg.crypto);
++ break;
++ case CRYPTO_ALG_TYPE_AHASH:
++ crypto_unregister_ahash(&ss_algs[i].alg.hash);
++ break;
++ }
++ }
++error_clk:
++ clk_disable_unprepare(ss->ssclk);
++error_ssclk:
++ clk_disable_unprepare(ss->busclk);
++ return err;
++}
++
++static int sun4i_ss_remove(struct platform_device *pdev)
++{
++ int i;
++ struct sun4i_ss_ctx *ss = platform_get_drvdata(pdev);
++
++ for (i = 0; i < ARRAY_SIZE(ss_algs); i++) {
++ switch (ss_algs[i].type) {
++ case CRYPTO_ALG_TYPE_ABLKCIPHER:
++ crypto_unregister_alg(&ss_algs[i].alg.crypto);
++ break;
++ case CRYPTO_ALG_TYPE_AHASH:
++ crypto_unregister_ahash(&ss_algs[i].alg.hash);
++ break;
++ }
++ }
++
++ writel(0, ss->base + SS_CTL);
++ clk_disable_unprepare(ss->busclk);
++ clk_disable_unprepare(ss->ssclk);
++ return 0;
++}
++
++static const struct of_device_id a20ss_crypto_of_match_table[] = {
++ { .compatible = "allwinner,sun4i-a10-crypto" },
++ {}
++};
++MODULE_DEVICE_TABLE(of, a20ss_crypto_of_match_table);
++
++static struct platform_driver sun4i_ss_driver = {
++ .probe = sun4i_ss_probe,
++ .remove = sun4i_ss_remove,
++ .driver = {
++ .name = "sun4i-ss",
++ .of_match_table = a20ss_crypto_of_match_table,
++ },
++};
++
++module_platform_driver(sun4i_ss_driver);
++
++MODULE_DESCRIPTION("Allwinner Security System cryptographic accelerator");
++MODULE_LICENSE("GPL");
++MODULE_AUTHOR("Corentin LABBE <clabbe.montjoie@gmail.com>");
+diff --git a/drivers/crypto/sunxi-ss/sun4i-ss-hash.c b/drivers/crypto/sunxi-ss/sun4i-ss-hash.c
+new file mode 100644
+index 0000000..ff80314
+--- /dev/null
++++ b/drivers/crypto/sunxi-ss/sun4i-ss-hash.c
+@@ -0,0 +1,492 @@
++/*
++ * sun4i-ss-hash.c - hardware cryptographic accelerator for Allwinner A20 SoC
++ *
++ * Copyright (C) 2013-2015 Corentin LABBE <clabbe.montjoie@gmail.com>
++ *
++ * This file add support for MD5 and SHA1.
++ *
++ * You could find the datasheet in Documentation/arm/sunxi/README
++ *
++ * This program is free software; you can redistribute it and/or modify
++ * it under the terms of the GNU General Public License as published by
++ * the Free Software Foundation; either version 2 of the License, or
++ * (at your option) any later version.
++ */
++#include "sun4i-ss.h"
++#include <linux/scatterlist.h>
++
++/* This is a totally arbitrary value */
++#define SS_TIMEOUT 100
++
++int sun4i_hash_crainit(struct crypto_tfm *tfm)
++{
++ crypto_ahash_set_reqsize(__crypto_ahash_cast(tfm),
++ sizeof(struct sun4i_req_ctx));
++ return 0;
++}
++
++/* sun4i_hash_init: initialize request context */
++int sun4i_hash_init(struct ahash_request *areq)
++{
++ struct sun4i_req_ctx *op = ahash_request_ctx(areq);
++ struct crypto_ahash *tfm = crypto_ahash_reqtfm(areq);
++ struct ahash_alg *alg = __crypto_ahash_alg(tfm->base.__crt_alg);
++ struct sun4i_ss_alg_template *algt;
++ struct sun4i_ss_ctx *ss;
++
++ memset(op, 0, sizeof(struct sun4i_req_ctx));
++
++ algt = container_of(alg, struct sun4i_ss_alg_template, alg.hash);
++ ss = algt->ss;
++ op->ss = algt->ss;
++ op->mode = algt->mode;
++
++ return 0;
++}
++
++int sun4i_hash_export_md5(struct ahash_request *areq, void *out)
++{
++ struct sun4i_req_ctx *op = ahash_request_ctx(areq);
++ struct md5_state *octx = out;
++ int i;
++
++ octx->byte_count = op->byte_count + op->len;
++
++ memcpy(octx->block, op->buf, op->len);
++
++ if (op->byte_count > 0) {
++ for (i = 0; i < 4; i++)
++ octx->hash[i] = op->hash[i];
++ } else {
++ octx->hash[0] = SHA1_H0;
++ octx->hash[1] = SHA1_H1;
++ octx->hash[2] = SHA1_H2;
++ octx->hash[3] = SHA1_H3;
++ }
++
++ return 0;
++}
++
++int sun4i_hash_import_md5(struct ahash_request *areq, const void *in)
++{
++ struct sun4i_req_ctx *op = ahash_request_ctx(areq);
++ const struct md5_state *ictx = in;
++ int i;
++
++ sun4i_hash_init(areq);
++
++ op->byte_count = ictx->byte_count & ~0x3F;
++ op->len = ictx->byte_count & 0x3F;
++
++ memcpy(op->buf, ictx->block, op->len);
++
++ for (i = 0; i < 4; i++)
++ op->hash[i] = ictx->hash[i];
++
++ return 0;
++}
++
++int sun4i_hash_export_sha1(struct ahash_request *areq, void *out)
++{
++ struct sun4i_req_ctx *op = ahash_request_ctx(areq);
++ struct sha1_state *octx = out;
++ int i;
++
++ octx->count = op->byte_count + op->len;
++
++ memcpy(octx->buffer, op->buf, op->len);
++
++ if (op->byte_count > 0) {
++ for (i = 0; i < 5; i++)
++ octx->state[i] = op->hash[i];
++ } else {
++ octx->state[0] = SHA1_H0;
++ octx->state[1] = SHA1_H1;
++ octx->state[2] = SHA1_H2;
++ octx->state[3] = SHA1_H3;
++ octx->state[4] = SHA1_H4;
++ }
++
++ return 0;
++}
++
++int sun4i_hash_import_sha1(struct ahash_request *areq, const void *in)
++{
++ struct sun4i_req_ctx *op = ahash_request_ctx(areq);
++ const struct sha1_state *ictx = in;
++ int i;
++
++ sun4i_hash_init(areq);
++
++ op->byte_count = ictx->count & ~0x3F;
++ op->len = ictx->count & 0x3F;
++
++ memcpy(op->buf, ictx->buffer, op->len);
++
++ for (i = 0; i < 5; i++)
++ op->hash[i] = ictx->state[i];
++
++ return 0;
++}
++
++/*
++ * sun4i_hash_update: update hash engine
++ *
++ * Could be used for both SHA1 and MD5
++ * Write data by step of 32bits and put then in the SS.
++ *
++ * Since we cannot leave partial data and hash state in the engine,
++ * we need to get the hash state at the end of this function.
++ * We can get the hash state every 64 bytes
++ *
++ * So the first work is to get the number of bytes to write to SS modulo 64
++ * The extra bytes will go to a temporary buffer op->buf storing op->len bytes
++ *
++ * So at the begin of update()
++ * if op->len + areq->nbytes < 64
++ * => all data will be written to wait buffer (op->buf) and end=0
++ * if not, write all data from op->buf to the device and position end to
++ * complete to 64bytes
++ *
++ * example 1:
++ * update1 60o => op->len=60
++ * update2 60o => need one more word to have 64 bytes
++ * end=4
++ * so write all data from op->buf and one word of SGs
++ * write remaining data in op->buf
++ * final state op->len=56
++ */
++int sun4i_hash_update(struct ahash_request *areq)
++{
++ u32 v, ivmode = 0;
++ unsigned int i = 0;
++ /*
++ * i is the total bytes read from SGs, to be compared to areq->nbytes
++ * i is important because we cannot rely on SG length since the sum of
++ * SG->length could be greater than areq->nbytes
++ */
++
++ struct sun4i_req_ctx *op = ahash_request_ctx(areq);
++ struct sun4i_ss_ctx *ss = op->ss;
++ struct crypto_ahash *tfm = crypto_ahash_reqtfm(areq);
++ unsigned int in_i = 0; /* advancement in the current SG */
++ unsigned int end;
++ /*
++ * end is the position when we need to stop writing to the device,
++ * to be compared to i
++ */
++ int in_r, err = 0;
++ unsigned int todo;
++ u32 spaces, rx_cnt = SS_RX_DEFAULT;
++ size_t copied = 0;
++ struct sg_mapping_iter mi;
++
++ dev_dbg(ss->dev, "%s %s bc=%llu len=%u mode=%x wl=%u h0=%0x",
++ __func__, crypto_tfm_alg_name(areq->base.tfm),
++ op->byte_count, areq->nbytes, op->mode,
++ op->len, op->hash[0]);
++
++ if (areq->nbytes == 0)
++ return 0;
++
++ /* protect against overflow */
++ if (areq->nbytes > UINT_MAX - op->len) {
++ dev_err(ss->dev, "Cannot process too large request\n");
++ return -EINVAL;
++ }
++
++ if (op->len + areq->nbytes < 64) {
++ /* linearize data to op->buf */
++ copied = sg_pcopy_to_buffer(areq->src, sg_nents(areq->src),
++ op->buf + op->len, areq->nbytes, 0);
++ op->len += copied;
++ return 0;
++ }
++
++ end = ((areq->nbytes + op->len) / 64) * 64 - op->len;
++
++ if (end > areq->nbytes || areq->nbytes - end > 63) {
++ dev_err(ss->dev, "ERROR: Bound error %u %u\n",
++ end, areq->nbytes);
++ return -EINVAL;
++ }
++
++ spin_lock_bh(&ss->slock);
++
++ /*
++ * if some data have been processed before,
++ * we need to restore the partial hash state
++ */
++ if (op->byte_count > 0) {
++ ivmode = SS_IV_ARBITRARY;
++ for (i = 0; i < 5; i++)
++ writel(op->hash[i], ss->base + SS_IV0 + i * 4);
++ }
++ /* Enable the device */
++ writel(op->mode | SS_ENABLED | ivmode, ss->base + SS_CTL);
++
++ i = 0;
++ sg_miter_start(&mi, areq->src, sg_nents(areq->src),
++ SG_MITER_FROM_SG | SG_MITER_ATOMIC);
++ sg_miter_next(&mi);
++ in_i = 0;
++
++ do {
++ /*
++ * we need to linearize in two case:
++ * - the buffer is already used
++ * - the SG does not have enough byte remaining ( < 4)
++ */
++ if (op->len > 0 || (mi.length - in_i) < 4) {
++ /*
++ * if we have entered here we have two reason to stop
++ * - the buffer is full
++ * - reach the end
++ */
++ while (op->len < 64 && i < end) {
++ /* how many bytes we can read from current SG */
++ in_r = min3(mi.length - in_i, end - i,
++ 64 - op->len);
++ memcpy(op->buf + op->len, mi.addr + in_i, in_r);
++ op->len += in_r;
++ i += in_r;
++ in_i += in_r;
++ if (in_i == mi.length) {
++ sg_miter_next(&mi);
++ in_i = 0;
++ }
++ }
++ if (op->len > 3 && (op->len % 4) == 0) {
++ /* write buf to the device */
++ writesl(ss->base + SS_RXFIFO, op->buf,
++ op->len / 4);
++ op->byte_count += op->len;
++ op->len = 0;
++ }
++ }
++ if (mi.length - in_i > 3 && i < end) {
++ /* how many bytes we can read from current SG */
++ in_r = min3(mi.length - in_i, areq->nbytes - i,
++ ((mi.length - in_i) / 4) * 4);
++ /* how many bytes we can write in the device*/
++ todo = min3((u32)(end - i) / 4, rx_cnt, (u32)in_r / 4);
++ writesl(ss->base + SS_RXFIFO, mi.addr + in_i, todo);
++ op->byte_count += todo * 4;
++ i += todo * 4;
++ in_i += todo * 4;
++ rx_cnt -= todo;
++ if (rx_cnt == 0) {
++ spaces = readl(ss->base + SS_FCSR);
++ rx_cnt = SS_RXFIFO_SPACES(spaces);
++ }
++ if (in_i == mi.length) {
++ sg_miter_next(&mi);
++ in_i = 0;
++ }
++ }
++ } while (i < end);
++ /* final linear */
++ if ((areq->nbytes - i) < 64) {
++ while (i < areq->nbytes && in_i < mi.length && op->len < 64) {
++ /* how many bytes we can read from current SG */
++ in_r = min3(mi.length - in_i, areq->nbytes - i,
++ 64 - op->len);
++ memcpy(op->buf + op->len, mi.addr + in_i, in_r);
++ op->len += in_r;
++ i += in_r;
++ in_i += in_r;
++ if (in_i == mi.length) {
++ sg_miter_next(&mi);
++ in_i = 0;
++ }
++ }
++ }
++
++ sg_miter_stop(&mi);
++
++ writel(op->mode | SS_ENABLED | SS_DATA_END, ss->base + SS_CTL);
++ i = 0;
++ do {
++ v = readl(ss->base + SS_CTL);
++ i++;
++ } while (i < SS_TIMEOUT && (v & SS_DATA_END) > 0);
++ if (i >= SS_TIMEOUT) {
++ dev_err_ratelimited(ss->dev,
++ "ERROR: hash end timeout %d>%d ctl=%x len=%u\n",
++ i, SS_TIMEOUT, v, areq->nbytes);
++ err = -EIO;
++ goto release_ss;
++ }
++
++ /* get the partial hash only if something was written */
++ for (i = 0; i < crypto_ahash_digestsize(tfm) / 4; i++)
++ op->hash[i] = readl(ss->base + SS_MD0 + i * 4);
++
++release_ss:
++ writel(0, ss->base + SS_CTL);
++ spin_unlock_bh(&ss->slock);
++ return err;
++}
++
++/*
++ * sun4i_hash_final: finalize hashing operation
++ *
++ * If we have some remaining bytes, we write them.
++ * Then ask the SS for finalizing the hashing operation
++ *
++ * I do not check RX FIFO size in this function since the size is 32
++ * after each enabling and this function neither write more than 32 words.
++ */
++int sun4i_hash_final(struct ahash_request *areq)
++{
++ u32 v, ivmode = 0;
++ unsigned int i;
++ unsigned int j = 0;
++ int zeros, err = 0;
++ unsigned int index, padlen;
++ __be64 bits;
++ struct sun4i_req_ctx *op = ahash_request_ctx(areq);
++ struct sun4i_ss_ctx *ss = op->ss;
++ struct crypto_ahash *tfm = crypto_ahash_reqtfm(areq);
++ u32 bf[32];
++ u32 wb = 0;
++ unsigned int nwait, nbw = 0;
++
++ dev_dbg(ss->dev, "%s: byte=%llu len=%u mode=%x wl=%u h=%x",
++ __func__, op->byte_count, areq->nbytes, op->mode,
++ op->len, op->hash[0]);
++
++ spin_lock_bh(&ss->slock);
++
++ /*
++ * if we have already written something,
++ * restore the partial hash state
++ */
++ if (op->byte_count > 0) {
++ ivmode = SS_IV_ARBITRARY;
++ for (i = 0; i < crypto_ahash_digestsize(tfm) / 4; i++)
++ writel(op->hash[i], ss->base + SS_IV0 + i * 4);
++ }
++ writel(op->mode | SS_ENABLED | ivmode, ss->base + SS_CTL);
++
++ /* write the remaining words of the wait buffer */
++ if (op->len > 0) {
++ nwait = op->len / 4;
++ if (nwait > 0) {
++ writesl(ss->base + SS_RXFIFO, op->buf, nwait);
++ op->byte_count += 4 * nwait;
++ }
++ nbw = op->len - 4 * nwait;
++ wb = *(u32 *)(op->buf + nwait * 4);
++ wb &= (0xFFFFFFFF >> (4 - nbw) * 8);
++ }
++
++ /* write the remaining bytes of the nbw buffer */
++ if (nbw > 0) {
++ wb |= ((1 << 7) << (nbw * 8));
++ bf[j++] = wb;
++ } else {
++ bf[j++] = 1 << 7;
++ }
++
++ /*
++ * number of space to pad to obtain 64o minus 8(size) minus 4 (final 1)
++ * I take the operations from other MD5/SHA1 implementations
++ */
++
++ /* we have already send 4 more byte of which nbw data */
++ if (op->mode == SS_OP_MD5) {
++ index = (op->byte_count + 4) & 0x3f;
++ op->byte_count += nbw;
++ if (index > 56)
++ zeros = (120 - index) / 4;
++ else
++ zeros = (56 - index) / 4;
++ } else {
++ op->byte_count += nbw;
++ index = op->byte_count & 0x3f;
++ padlen = (index < 56) ? (56 - index) : ((64 + 56) - index);
++ zeros = (padlen - 1) / 4;
++ }
++
++ memset(bf + j, 0, 4 * zeros);
++ j += zeros;
++
++ /* write the length of data */
++ if (op->mode == SS_OP_SHA1) {
++ bits = cpu_to_be64(op->byte_count << 3);
++ bf[j++] = bits & 0xffffffff;
++ bf[j++] = (bits >> 32) & 0xffffffff;
++ } else {
++ bf[j++] = (op->byte_count << 3) & 0xffffffff;
++ bf[j++] = (op->byte_count >> 29) & 0xffffffff;
++ }
++ writesl(ss->base + SS_RXFIFO, bf, j);
++
++ /* Tell the SS to stop the hashing */
++ writel(op->mode | SS_ENABLED | SS_DATA_END, ss->base + SS_CTL);
++
++ /*
++ * Wait for SS to finish the hash.
++ * The timeout could happen only in case of bad overcloking
++ * or driver bug.
++ */
++ i = 0;
++ do {
++ v = readl(ss->base + SS_CTL);
++ i++;
++ } while (i < SS_TIMEOUT && (v & SS_DATA_END) > 0);
++ if (i >= SS_TIMEOUT) {
++ dev_err_ratelimited(ss->dev,
++ "ERROR: hash end timeout %d>%d ctl=%x len=%u\n",
++ i, SS_TIMEOUT, v, areq->nbytes);
++ err = -EIO;
++ goto release_ss;
++ }
++
++ /* Get the hash from the device */
++ if (op->mode == SS_OP_SHA1) {
++ for (i = 0; i < 5; i++) {
++ v = cpu_to_be32(readl(ss->base + SS_MD0 + i * 4));
++ memcpy(areq->result + i * 4, &v, 4);
++ }
++ } else {
++ for (i = 0; i < 4; i++) {
++ v = readl(ss->base + SS_MD0 + i * 4);
++ memcpy(areq->result + i * 4, &v, 4);
++ }
++ }
++
++release_ss:
++ writel(0, ss->base + SS_CTL);
++ spin_unlock_bh(&ss->slock);
++ return err;
++}
++
++/* sun4i_hash_finup: finalize hashing operation after an update */
++int sun4i_hash_finup(struct ahash_request *areq)
++{
++ int err;
++
++ err = sun4i_hash_update(areq);
++ if (err != 0)
++ return err;
++
++ return sun4i_hash_final(areq);
++}
++
++/* combo of init/update/final functions */
++int sun4i_hash_digest(struct ahash_request *areq)
++{
++ int err;
++
++ err = sun4i_hash_init(areq);
++ if (err != 0)
++ return err;
++
++ err = sun4i_hash_update(areq);
++ if (err != 0)
++ return err;
++
++ return sun4i_hash_final(areq);
++}
+diff --git a/drivers/crypto/sunxi-ss/sun4i-ss.h b/drivers/crypto/sunxi-ss/sun4i-ss.h
+new file mode 100644
+index 0000000..db18b255
+--- /dev/null
++++ b/drivers/crypto/sunxi-ss/sun4i-ss.h
+@@ -0,0 +1,199 @@
++/*
++ * sun4i-ss.h - hardware cryptographic accelerator for Allwinner A20 SoC
++ *
++ * Copyright (C) 2013-2015 Corentin LABBE <clabbe.montjoie@gmail.com>
++ *
++ * Support AES cipher with 128,192,256 bits keysize.
++ * Support MD5 and SHA1 hash algorithms.
++ * Support DES and 3DES
++ *
++ * You could find the datasheet in Documentation/arm/sunxi/README
++ *
++ * Licensed under the GPL-2.
++ */
++
++#include <linux/clk.h>
++#include <linux/crypto.h>
++#include <linux/io.h>
++#include <linux/module.h>
++#include <linux/of.h>
++#include <linux/platform_device.h>
++#include <crypto/scatterwalk.h>
++#include <linux/scatterlist.h>
++#include <linux/interrupt.h>
++#include <linux/delay.h>
++#include <crypto/md5.h>
++#include <crypto/sha.h>
++#include <crypto/hash.h>
++#include <crypto/internal/hash.h>
++#include <crypto/aes.h>
++#include <crypto/des.h>
++#include <crypto/internal/rng.h>
++
++#define SS_CTL 0x00
++#define SS_KEY0 0x04
++#define SS_KEY1 0x08
++#define SS_KEY2 0x0C
++#define SS_KEY3 0x10
++#define SS_KEY4 0x14
++#define SS_KEY5 0x18
++#define SS_KEY6 0x1C
++#define SS_KEY7 0x20
++
++#define SS_IV0 0x24
++#define SS_IV1 0x28
++#define SS_IV2 0x2C
++#define SS_IV3 0x30
++
++#define SS_FCSR 0x44
++
++#define SS_MD0 0x4C
++#define SS_MD1 0x50
++#define SS_MD2 0x54
++#define SS_MD3 0x58
++#define SS_MD4 0x5C
++
++#define SS_RXFIFO 0x200
++#define SS_TXFIFO 0x204
++
++/* SS_CTL configuration values */
++
++/* PRNG generator mode - bit 15 */
++#define SS_PRNG_ONESHOT (0 << 15)
++#define SS_PRNG_CONTINUE (1 << 15)
++
++/* IV mode for hash */
++#define SS_IV_ARBITRARY (1 << 14)
++
++/* SS operation mode - bits 12-13 */
++#define SS_ECB (0 << 12)
++#define SS_CBC (1 << 12)
++#define SS_CTS (3 << 12)
++
++/* Counter width for CNT mode - bits 10-11 */
++#define SS_CNT_16BITS (0 << 10)
++#define SS_CNT_32BITS (1 << 10)
++#define SS_CNT_64BITS (2 << 10)
++
++/* Key size for AES - bits 8-9 */
++#define SS_AES_128BITS (0 << 8)
++#define SS_AES_192BITS (1 << 8)
++#define SS_AES_256BITS (2 << 8)
++
++/* Operation direction - bit 7 */
++#define SS_ENCRYPTION (0 << 7)
++#define SS_DECRYPTION (1 << 7)
++
++/* SS Method - bits 4-6 */
++#define SS_OP_AES (0 << 4)
++#define SS_OP_DES (1 << 4)
++#define SS_OP_3DES (2 << 4)
++#define SS_OP_SHA1 (3 << 4)
++#define SS_OP_MD5 (4 << 4)
++#define SS_OP_PRNG (5 << 4)
++
++/* Data end bit - bit 2 */
++#define SS_DATA_END (1 << 2)
++
++/* PRNG start bit - bit 1 */
++#define SS_PRNG_START (1 << 1)
++
++/* SS Enable bit - bit 0 */
++#define SS_DISABLED (0 << 0)
++#define SS_ENABLED (1 << 0)
++
++/* SS_FCSR configuration values */
++/* RX FIFO status - bit 30 */
++#define SS_RXFIFO_FREE (1 << 30)
++
++/* RX FIFO empty spaces - bits 24-29 */
++#define SS_RXFIFO_SPACES(val) (((val) >> 24) & 0x3f)
++
++/* TX FIFO status - bit 22 */
++#define SS_TXFIFO_AVAILABLE (1 << 22)
++
++/* TX FIFO available spaces - bits 16-21 */
++#define SS_TXFIFO_SPACES(val) (((val) >> 16) & 0x3f)
++
++#define SS_RX_MAX 32
++#define SS_RX_DEFAULT SS_RX_MAX
++#define SS_TX_MAX 33
++
++#define SS_RXFIFO_EMP_INT_PENDING (1 << 10)
++#define SS_TXFIFO_AVA_INT_PENDING (1 << 8)
++#define SS_RXFIFO_EMP_INT_ENABLE (1 << 2)
++#define SS_TXFIFO_AVA_INT_ENABLE (1 << 0)
++
++struct sun4i_ss_ctx {
++ void __iomem *base;
++ int irq;
++ struct clk *busclk;
++ struct clk *ssclk;
++ struct device *dev;
++ struct resource *res;
++ spinlock_t slock; /* control the use of the device */
++};
++
++struct sun4i_ss_alg_template {
++ u32 type;
++ u32 mode;
++ union {
++ struct crypto_alg crypto;
++ struct ahash_alg hash;
++ } alg;
++ struct sun4i_ss_ctx *ss;
++};
++
++struct sun4i_tfm_ctx {
++ u32 key[AES_MAX_KEY_SIZE / 4];/* divided by sizeof(u32) */
++ u32 keylen;
++ u32 keymode;
++ struct sun4i_ss_ctx *ss;
++};
++
++struct sun4i_cipher_req_ctx {
++ u32 mode;
++};
++
++struct sun4i_req_ctx {
++ u32 mode;
++ u64 byte_count; /* number of bytes "uploaded" to the device */
++ u32 hash[5]; /* for storing SS_IVx register */
++ char buf[64];
++ unsigned int len;
++ struct sun4i_ss_ctx *ss;
++};
++
++int sun4i_hash_crainit(struct crypto_tfm *tfm);
++int sun4i_hash_init(struct ahash_request *areq);
++int sun4i_hash_update(struct ahash_request *areq);
++int sun4i_hash_final(struct ahash_request *areq);
++int sun4i_hash_finup(struct ahash_request *areq);
++int sun4i_hash_digest(struct ahash_request *areq);
++int sun4i_hash_export_md5(struct ahash_request *areq, void *out);
++int sun4i_hash_import_md5(struct ahash_request *areq, const void *in);
++int sun4i_hash_export_sha1(struct ahash_request *areq, void *out);
++int sun4i_hash_import_sha1(struct ahash_request *areq, const void *in);
++
++int sun4i_ss_cbc_aes_encrypt(struct ablkcipher_request *areq);
++int sun4i_ss_cbc_aes_decrypt(struct ablkcipher_request *areq);
++int sun4i_ss_ecb_aes_encrypt(struct ablkcipher_request *areq);
++int sun4i_ss_ecb_aes_decrypt(struct ablkcipher_request *areq);
++
++int sun4i_ss_cbc_des_encrypt(struct ablkcipher_request *areq);
++int sun4i_ss_cbc_des_decrypt(struct ablkcipher_request *areq);
++int sun4i_ss_ecb_des_encrypt(struct ablkcipher_request *areq);
++int sun4i_ss_ecb_des_decrypt(struct ablkcipher_request *areq);
++
++int sun4i_ss_cbc_des3_encrypt(struct ablkcipher_request *areq);
++int sun4i_ss_cbc_des3_decrypt(struct ablkcipher_request *areq);
++int sun4i_ss_ecb_des3_encrypt(struct ablkcipher_request *areq);
++int sun4i_ss_ecb_des3_decrypt(struct ablkcipher_request *areq);
++
++int sun4i_ss_cipher_init(struct crypto_tfm *tfm);
++int sun4i_ss_aes_setkey(struct crypto_ablkcipher *tfm, const u8 *key,
++ unsigned int keylen);
++int sun4i_ss_des_setkey(struct crypto_ablkcipher *tfm, const u8 *key,
++ unsigned int keylen);
++int sun4i_ss_des3_setkey(struct crypto_ablkcipher *tfm, const u8 *key,
++ unsigned int keylen);
--- /dev/null
+From e4127db9b980a5684c537d9010ed2aaa05a1e79a Mon Sep 17 00:00:00 2001
+From: Hans de Goede <hdegoede@redhat.com>
+Date: Sat, 24 May 2014 20:53:49 +0200
+Subject: [PATCH] ARM: dts: sun7i: Add OOB irq support to boards with broadcom
+ sdio wifi
+
+Signed-off-by: Hans de Goede <hdegoede@redhat.com>
+---
+ arch/arm/boot/dts/sun7i-a20-cubietruck.dts | 11 +++++++++++
+ arch/arm/boot/dts/sun7i-a20-i12-tvbox.dts | 11 +++++++++++
+ 2 files changed, 22 insertions(+)
+
+Index: linux-4.1.3/arch/arm/boot/dts/sun7i-a20-cubietruck.dts
+===================================================================
+--- linux-4.1.3.orig/arch/arm/boot/dts/sun7i-a20-cubietruck.dts
++++ linux-4.1.3/arch/arm/boot/dts/sun7i-a20-cubietruck.dts
+@@ -71,12 +71,23 @@
+ };
+
+ mmc3: mmc@01c12000 {
++ #address-cells = <1>;
++ #size-cells = <0>;
++
+ pinctrl-names = "default";
+ pinctrl-0 = <&mmc3_pins_a>;
+ vmmc-supply = <®_vmmc3>;
+ bus-width = <4>;
+ non-removable;
+ status = "okay";
++
++ brcmf: bcrmf@1 {
++ reg = <1>;
++ compatible = "brcm,bcm4329-fmac";
++ interrupt-parent = <&pio>;
++ interrupts = <10 8>; /* PH10 / EINT10 */
++ interrupt-names = "host-wake";
++ };
+ };
+
+ usbphy: phy@01c13400 {
+Index: linux-4.1.3/arch/arm/boot/dts/sun7i-a20-i12-tvbox.dts
+===================================================================
+--- linux-4.1.3.orig/arch/arm/boot/dts/sun7i-a20-i12-tvbox.dts
++++ linux-4.1.3/arch/arm/boot/dts/sun7i-a20-i12-tvbox.dts
+@@ -69,12 +69,23 @@
+ };
+
+ mmc3: mmc@01c12000 {
++ #address-cells = <1>;
++ #size-cells = <0>;
++
+ pinctrl-names = "default";
+ pinctrl-0 = <&mmc3_pins_a>;
+ vmmc-supply = <®_vmmc3>;
+ bus-width = <4>;
+ non-removable;
+ status = "okay";
++
++ brcmf: bcrmf@1 {
++ reg = <1>;
++ compatible = "brcm,bcm4329-fmac";
++ interrupt-parent = <&pio>;
++ interrupts = <10 8>; /* PH10 / EINT10 */
++ interrupt-names = "host-wake";
++ };
+ };
+
+ usbphy: phy@01c13400 {
--- /dev/null
+From c6e2b7dad39a7887f935458d1c8de84db06243e1 Mon Sep 17 00:00:00 2001
+From: Chen-Yu Tsai <wens@csie.org>
+Date: Thu, 26 Dec 2013 17:15:47 +0800
+Subject: [PATCH] ARM: dts: sun7i: add bluetooth module to CubieTruck DTS
+
+The CubieTruck has an AMPAK AP6210 WiFi+Bluetooth module. The
+Bluetooth part is a BCM20710 IC connected to UART2 in the A20
+SoC. The IC also takes a 32.768 KHz low power clock input, a power
+enable signal and a wake signal via GPIO.
+
+The Bluetooth module supports out-of-band interrupt signaling via
+GPIO, but this is not supported in this patch.
+---
+ arch/arm/boot/dts/sun7i-a20-cubietruck.dts | 36 ++++++++++++++++++++++++++++++
+ 1 file changed, 36 insertions(+)
+
+Index: linux-4.1.3/arch/arm/boot/dts/sun7i-a20-cubietruck.dts
+===================================================================
+--- linux-4.1.3.orig/arch/arm/boot/dts/sun7i-a20-cubietruck.dts
++++ linux-4.1.3/arch/arm/boot/dts/sun7i-a20-cubietruck.dts
+@@ -88,6 +88,20 @@
+ interrupts = <10 8>; /* PH10 / EINT10 */
+ interrupt-names = "host-wake";
+ };
++
++ bt_pwr_pin: bt_pwr_pin@0 {
++ allwinner,pins = "PH18";
++ allwinner,function = "gpio_out";
++ allwinner,drive = <0>;
++ allwinner,pull = <0>;
++ };
++
++ bt_wake_pin: bt_wake_pin@0 {
++ allwinner,pins = "PH24";
++ allwinner,function = "gpio_out";
++ allwinner,drive = <0>;
++ allwinner,pull = <0>;
++ };
+ };
+
+ usbphy: phy@01c13400 {
+@@ -171,6 +185,12 @@
+ status = "okay";
+ };
+
++ uart2: serial@01c28800 {
++ pinctrl-names = "default";
++ pinctrl-0 = <&uart2_pins_a>;
++ status = "okay";
++ };
++
+ i2c0: i2c@01c2ac00 {
+ pinctrl-names = "default";
+ pinctrl-0 = <&i2c0_pins_a>;
+@@ -264,6 +284,22 @@
+ enable-active-high;
+ gpio = <&pio 7 9 GPIO_ACTIVE_HIGH>;
+ };
++
++ rfkill-switches {
++ compatible = "simple-bus";
++ pinctrl-names = "default";
++
++ rfkill_bt {
++ compatible = "rfkill-gpio";
++ pinctrl-0 = <&bt_pwr_pin>, <&clk_out_a_pins_a>;
++ rfkill-name = "bt";
++ rfkill-type = <2>;
++ bt_shutdown-gpios = <0>, <&pio 7 18 0>; /* PH18 */
++ bt_reset-gpios = <&pio 7 24 0>; /* PH24 */
++ clocks = <&clk_out_a>;
++ clock-frequency = <32768>;
++ };
++ };
+ };
+
+ #include "axp209.dtsi"
--- /dev/null
+Index: linux-4.1.3/arch/arm/boot/dts/Makefile
+===================================================================
+--- linux-4.1.3.orig/arch/arm/boot/dts/Makefile
++++ linux-4.1.3/arch/arm/boot/dts/Makefile
+@@ -554,6 +554,7 @@ dtb-$(CONFIG_MACH_SUN7I) += \
+ sun7i-a20-cubietruck.dtb \
+ sun7i-a20-hummingbird.dtb \
+ sun7i-a20-i12-tvbox.dtb \
++ sun7i-a20-lamobo-r1.dtb \
+ sun7i-a20-m3.dtb \
+ sun7i-a20-olinuxino-lime.dtb \
+ sun7i-a20-olinuxino-lime2.dtb \
+Index: linux-4.1.3/arch/arm/boot/dts/sun7i-a20-lamobo-r1.dts
+===================================================================
+--- /dev/null
++++ linux-4.1.3/arch/arm/boot/dts/sun7i-a20-lamobo-r1.dts
+@@ -0,0 +1,235 @@
++/*
++ * Copyright 2015 Daniel Golle <daniel@makrotopia.org>
++ * Copyright 2014 Hans de Goede <hdegoede@redhat.com>
++ *
++ * This file is dual-licensed: you can use it either under the terms
++ * of the GPL or the X11 license, at your option. Note that this dual
++ * licensing only applies to this file, and not this project as a
++ * whole.
++ *
++ * a) This library is free software; you can redistribute it and/or
++ * modify it under the terms of the GNU General Public License as
++ * published by the Free Software Foundation; either version 2 of the
++ * License, or (at your option) any later version.
++ *
++ * This library is distributed in the hope that it will be useful,
++ * but WITHOUT ANY WARRANTY; without even the implied warranty of
++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
++ * GNU General Public License for more details.
++ *
++ * You should have received a copy of the GNU General Public
++ * License along with this library; if not, write to the Free
++ * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
++ * MA 02110-1301 USA
++ *
++ * Or, alternatively,
++ *
++ * b) Permission is hereby granted, free of charge, to any person
++ * obtaining a copy of this software and associated documentation
++ * files (the "Software"), to deal in the Software without
++ * restriction, including without limitation the rights to use,
++ * copy, modify, merge, publish, distribute, sublicense, and/or
++ * sell copies of the Software, and to permit persons to whom the
++ * Software is furnished to do so, subject to the following
++ * conditions:
++ *
++ * The above copyright notice and this permission notice shall be
++ * included in all copies or substantial portions of the Software.
++ *
++ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
++ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
++ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
++ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
++ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
++ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
++ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
++ * OTHER DEALINGS IN THE SOFTWARE.
++ */
++
++/dts-v1/;
++#include "sun7i-a20.dtsi"
++#include "sunxi-common-regulators.dtsi"
++#include <dt-bindings/input/input.h>
++
++/ {
++ model = "Lamobo R1";
++ compatible = "lamobo,lamobo-r1", "allwinner,sun7i-a20";
++
++ soc@01c00000 {
++ spi0: spi@01c05000 {
++ pinctrl-names = "default";
++ pinctrl-0 = <&spi0_pins_a>;
++ status = "okay";
++ };
++
++ mmc0: mmc@01c0f000 {
++ pinctrl-names = "default";
++ pinctrl-0 = <&mmc0_pins_a>, <&mmc0_cd_pin_lamobo>;
++ vmmc-supply = <®_vcc3v3>;
++ bus-width = <4>;
++ cd-gpios = <&pio 7 10 0>; /* PH10 */
++ cd-inverted;
++ status = "okay";
++ };
++
++ usbphy: phy@01c13400 {
++ usb1_vbus-supply = <®_usb1_vbus>;
++ usb2_vbus-supply = <®_usb2_vbus>;
++ status = "okay";
++ };
++
++ ehci0: usb@01c14000 {
++ status = "okay";
++ };
++
++ ohci0: usb@01c14400 {
++ status = "okay";
++ };
++
++ ahci: sata@01c18000 {
++ target-supply = <®_ahci_5v>;
++ status = "okay";
++ };
++
++ ehci1: usb@01c1c000 {
++ status = "okay";
++ };
++
++ ohci1: usb@01c1c400 {
++ status = "okay";
++ };
++
++ pinctrl@01c20800 {
++ mmc0_cd_pin_lamobo: mmc0_cd_pin@0 {
++ allwinner,pins = "PH10";
++ allwinner,function = "gpio_in";
++ allwinner,drive = <0>;
++ allwinner,pull = <1>;
++ };
++
++ gmac_power_pin_lamobo: gmac_power_pin@0 {
++ allwinner,pins = "PH23";
++ allwinner,function = "gpio_out";
++ allwinner,drive = <0>;
++ allwinner,pull = <0>;
++ };
++
++ led_pins_lamobo: led_pins@0 {
++ allwinner,pins = "PH2";
++ allwinner,function = "gpio_out";
++ allwinner,drive = <1>;
++ allwinner,pull = <0>;
++ };
++ };
++
++ lradc: lradc@01c22800 {
++ allwinner,chan0-step = <200>;
++ linux,chan0-keycodes = <KEY_VOLUMEUP KEY_VOLUMEDOWN
++ KEY_MENU KEY_SEARCH KEY_HOME
++ KEY_ESC KEY_ENTER>;
++ status = "okay";
++ };
++
++ ir0: ir@01c21800 {
++ pinctrl-names = "default";
++ pinctrl-0 = <&ir0_pins_a>;
++ status = "okay";
++ };
++
++ uart0: serial@01c28000 {
++ pinctrl-names = "default";
++ pinctrl-0 = <&uart0_pins_a>;
++ status = "okay";
++ };
++
++ uart3: serial@01c28c00 {
++ pinctrl-names = "default";
++ pinctrl-0 = <&uart3_pins_b>;
++ status = "okay";
++ };
++
++ uart7: serial@01c29c00 {
++ pinctrl-names = "default";
++ pinctrl-0 = <&uart7_pins_a>;
++ status = "okay";
++ };
++
++ i2c0: i2c@01c2ac00 {
++ pinctrl-names = "default";
++ pinctrl-0 = <&i2c0_pins_a>;
++ status = "okay";
++
++ axp209: pmic@34 {
++ compatible = "x-powers,axp209";
++ reg = <0x34>;
++ interrupt-parent = <&nmi_intc>;
++ interrupts = <0 8>;
++
++ interrupt-controller;
++ #interrupt-cells = <1>;
++ };
++ };
++
++ i2c1: i2c@01c2b000 {
++ pinctrl-names = "default";
++ pinctrl-0 = <&i2c1_pins_a>;
++ status = "okay";
++ };
++
++ i2c2: i2c@01c2b400 {
++ pinctrl-names = "default";
++ pinctrl-0 = <&i2c2_pins_a>;
++ status = "okay";
++ };
++
++ gmac: ethernet@01c50000 {
++ pinctrl-names = "default";
++ pinctrl-0 = <&gmac_pins_rgmii_a>;
++ phy = <&phy1>;
++ phy-mode = "rgmii";
++ phy-supply = <®_gmac_3v3>;
++ status = "okay";
++
++ phy1: ethernet-phy@1 {
++ reg = <1>;
++ };
++ };
++ };
++
++ leds {
++ compatible = "gpio-leds";
++ pinctrl-names = "default";
++ pinctrl-0 = <&led_pins_lamobo>;
++
++ green {
++ label = "lamobo:green:usr";
++ gpios = <&pio 7 24 0>;
++ default-state = "on";
++ };
++ };
++
++ reg_ahci_5v: ahci-5v {
++ status = "okay";
++ };
++
++ reg_usb1_vbus: usb1-vbus {
++ status = "okay";
++ };
++
++ reg_usb2_vbus: usb2-vbus {
++ status = "okay";
++ };
++
++ reg_gmac_3v3: gmac-3v3 {
++ compatible = "regulator-fixed";
++ pinctrl-names = "default";
++ pinctrl-0 = <&gmac_power_pin_lamobo>;
++ regulator-name = "gmac-3v3";
++ regulator-min-microvolt = <3300000>;
++ regulator-max-microvolt = <3300000>;
++ startup-delay-us = <100000>;
++ enable-active-high;
++ gpio = <&pio 7 23 0>;
++ status = "okay";
++ };
++};
projects / openwrt / staging / rmilecki.git / commitdiff