+++ /dev/null
-CONFIG_ARCH_BINFMT_ELF_STATE=y
-CONFIG_ARCH_CLOCKSOURCE_DATA=y
-CONFIG_ARCH_DISCARD_MEMBLOCK=y
-CONFIG_ARCH_HAS_ELF_RANDOMIZE=y
-# CONFIG_ARCH_HAS_GCOV_PROFILE_ALL is not set
-# CONFIG_ARCH_HAS_SG_CHAIN is not set
-# CONFIG_ARCH_HAS_STRICT_KERNEL_RWX is not set
-# CONFIG_ARCH_HAS_STRICT_MODULE_RWX is not set
-CONFIG_ARCH_HIBERNATION_POSSIBLE=y
-CONFIG_ARCH_MIGHT_HAVE_PC_PARPORT=y
-CONFIG_ARCH_MIGHT_HAVE_PC_SERIO=y
-CONFIG_ARCH_MMAP_RND_BITS_MAX=15
-CONFIG_ARCH_MMAP_RND_COMPAT_BITS_MAX=15
-# CONFIG_ARCH_OPTIONAL_KERNEL_RWX is not set
-# CONFIG_ARCH_OPTIONAL_KERNEL_RWX_DEFAULT is not set
-CONFIG_ARCH_SUPPORTS_UPROBES=y
-CONFIG_ARCH_SUSPEND_POSSIBLE=y
-CONFIG_ARCH_USE_BUILTIN_BSWAP=y
-CONFIG_ARCH_USE_QUEUED_RWLOCKS=y
-CONFIG_ARCH_USE_QUEUED_SPINLOCKS=y
-CONFIG_ARCH_WANT_IPC_PARSE_VERSION=y
-CONFIG_BLK_DEV_LOOP=y
-CONFIG_BLK_DEV_SD=y
-CONFIG_BLK_SCSI_REQUEST=y
-CONFIG_BOARD_SCACHE=y
-CONFIG_BOOT_ELF32=y
-CONFIG_CEVT_R4K=y
-CONFIG_CLKDEV_LOOKUP=y
-CONFIG_CLKSRC_MIPS_GIC=y
-CONFIG_CLKSRC_PISTACHIO=y
-CONFIG_CLONE_BACKWARDS=y
-CONFIG_COMMON_CLK=y
-# CONFIG_COMMON_CLK_BOSTON is not set
-CONFIG_CONNECTOR=y
-CONFIG_CPU_GENERIC_DUMP_TLB=y
-CONFIG_CPU_HAS_PREFETCH=y
-CONFIG_CPU_HAS_RIXI=y
-CONFIG_CPU_HAS_SYNC=y
-# CONFIG_CPU_HOTPLUG_STATE_CONTROL is not set
-CONFIG_CPU_IDLE=y
-CONFIG_CPU_IDLE_GOV_LADDER=y
-CONFIG_CPU_IDLE_GOV_MENU=y
-CONFIG_CPU_LITTLE_ENDIAN=y
-CONFIG_CPU_MIPS32=y
-CONFIG_CPU_MIPS32_R2=y
-CONFIG_CPU_MIPSR2=y
-CONFIG_CPU_MIPSR2_IRQ_EI=y
-CONFIG_CPU_MIPSR2_IRQ_VI=y
-CONFIG_CPU_NEEDS_NO_SMARTMIPS_OR_MICROMIPS=y
-CONFIG_CPU_PM=y
-CONFIG_CPU_R4K_CACHE_TLB=y
-CONFIG_CPU_R4K_FPU=y
-CONFIG_CPU_RMAP=y
-CONFIG_CPU_SUPPORTS_32BIT_KERNEL=y
-CONFIG_CPU_SUPPORTS_HIGHMEM=y
-CONFIG_CPU_SUPPORTS_MSA=y
-CONFIG_CRC16=y
-CONFIG_CRC_CCITT=y
-CONFIG_CRYPTO_ACOMP2=y
-CONFIG_CRYPTO_AEAD=y
-CONFIG_CRYPTO_AEAD2=y
-CONFIG_CRYPTO_CBC=y
-CONFIG_CRYPTO_CRC32C=y
-CONFIG_CRYPTO_DEFLATE=y
-CONFIG_CRYPTO_HASH=y
-CONFIG_CRYPTO_HASH2=y
-CONFIG_CRYPTO_LZO=y
-CONFIG_CRYPTO_MANAGER=y
-CONFIG_CRYPTO_MANAGER2=y
-CONFIG_CRYPTO_MD5=y
-CONFIG_CRYPTO_NULL=y
-CONFIG_CRYPTO_NULL2=y
-CONFIG_CRYPTO_RNG=y
-CONFIG_CRYPTO_RNG2=y
-CONFIG_CRYPTO_SHA1=y
-CONFIG_CRYPTO_SHA256=y
-CONFIG_CRYPTO_WORKQUEUE=y
-CONFIG_CSRC_R4K=y
-CONFIG_DMADEVICES=y
-CONFIG_DMA_ENGINE=y
-CONFIG_DMA_NONCOHERENT=y
-CONFIG_DMA_OF=y
-CONFIG_DMA_VIRTUAL_CHANNELS=y
-CONFIG_DTC=y
-# CONFIG_DWMAC_DWC_QOS_ETH is not set
-CONFIG_DWMAC_GENERIC=y
-CONFIG_EARLY_PRINTK=y
-CONFIG_EARLY_PRINTK_8250=y
-CONFIG_EXT4_FS=y
-CONFIG_EXT4_FS_POSIX_ACL=y
-CONFIG_EXT4_FS_SECURITY=y
-CONFIG_FIXED_PHY=y
-CONFIG_FS_MBCACHE=y
-CONFIG_FS_POSIX_ACL=y
-CONFIG_GENERIC_ALLOCATOR=y
-CONFIG_GENERIC_ATOMIC64=y
-CONFIG_GENERIC_CLOCKEVENTS=y
-CONFIG_GENERIC_CMOS_UPDATE=y
-CONFIG_GENERIC_CPU_AUTOPROBE=y
-CONFIG_GENERIC_IO=y
-CONFIG_GENERIC_IRQ_CHIP=y
-CONFIG_GENERIC_IRQ_EFFECTIVE_AFF_MASK=y
-CONFIG_GENERIC_IRQ_IPI=y
-CONFIG_GENERIC_IRQ_SHOW=y
-CONFIG_GENERIC_PCI_IOMAP=y
-CONFIG_GENERIC_PHY=y
-CONFIG_GENERIC_PINCONF=y
-CONFIG_GENERIC_PINCTRL_GROUPS=y
-CONFIG_GENERIC_PINMUX_FUNCTIONS=y
-CONFIG_GENERIC_SCHED_CLOCK=y
-CONFIG_GENERIC_SMP_IDLE_THREAD=y
-CONFIG_GENERIC_TIME_VSYSCALL=y
-CONFIG_GPIOLIB=y
-CONFIG_GPIOLIB_IRQCHIP=y
-# CONFIG_GRO_CELLS is not set
-CONFIG_HANDLE_DOMAIN_IRQ=y
-CONFIG_HARDWARE_WATCHPOINTS=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_BITREVERSE is not set
-CONFIG_HAVE_ARCH_JUMP_LABEL=y
-CONFIG_HAVE_ARCH_KGDB=y
-CONFIG_HAVE_ARCH_SECCOMP_FILTER=y
-CONFIG_HAVE_ARCH_TRACEHOOK=y
-# CONFIG_HAVE_BOOTMEM_INFO_NODE is not set
-CONFIG_HAVE_CBPF_JIT=y
-CONFIG_HAVE_CC_STACKPROTECTOR=y
-CONFIG_HAVE_CLK=y
-CONFIG_HAVE_CLK_PREPARE=y
-CONFIG_HAVE_CONTEXT_TRACKING=y
-CONFIG_HAVE_COPY_THREAD_TLS=y
-CONFIG_HAVE_C_RECORDMCOUNT=y
-CONFIG_HAVE_DEBUG_KMEMLEAK=y
-CONFIG_HAVE_DEBUG_STACKOVERFLOW=y
-CONFIG_HAVE_DMA_API_DEBUG=y
-CONFIG_HAVE_DMA_CONTIGUOUS=y
-CONFIG_HAVE_DYNAMIC_FTRACE=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_IDE=y
-CONFIG_HAVE_IRQ_EXIT_ON_IRQ_STACK=y
-CONFIG_HAVE_IRQ_TIME_ACCOUNTING=y
-CONFIG_HAVE_KVM=y
-CONFIG_HAVE_LATENCYTOP_SUPPORT=y
-CONFIG_HAVE_MEMBLOCK=y
-CONFIG_HAVE_MEMBLOCK_NODE_MAP=y
-CONFIG_HAVE_MOD_ARCH_SPECIFIC=y
-CONFIG_HAVE_NET_DSA=y
-CONFIG_HAVE_OPROFILE=y
-CONFIG_HAVE_PERF_EVENTS=y
-CONFIG_HAVE_REGS_AND_STACK_ACCESS_API=y
-CONFIG_HAVE_SYSCALL_TRACEPOINTS=y
-CONFIG_HOTPLUG_CPU=y
-CONFIG_I2C=y
-CONFIG_I2C_BOARDINFO=y
-CONFIG_I2C_IMG=y
-CONFIG_IMGPDC_WDT=y
-CONFIG_IMG_MDC_DMA=y
-CONFIG_INITRAMFS_SOURCE=""
-CONFIG_IRQCHIP=y
-CONFIG_IRQ_DOMAIN=y
-CONFIG_IRQ_DOMAIN_HIERARCHY=y
-CONFIG_IRQ_FORCED_THREADING=y
-CONFIG_IRQ_MIPS_CPU=y
-CONFIG_IRQ_WORK=y
-CONFIG_JBD2=y
-CONFIG_LEDS_PWM=y
-CONFIG_LIBFDT=y
-CONFIG_LKDTM=y
-CONFIG_LOG_BUF_SHIFT=18
-CONFIG_LZO_COMPRESS=y
-CONFIG_LZO_DECOMPRESS=y
-CONFIG_MACH_PISTACHIO=y
-CONFIG_MAGIC_SYSRQ=y
-CONFIG_MAGIC_SYSRQ_DEFAULT_ENABLE=0
-CONFIG_MDIO_BUS=y
-CONFIG_MDIO_DEVICE=y
-CONFIG_MFD_SYSCON=y
-CONFIG_MICREL_PHY=y
-CONFIG_MIPS=y
-CONFIG_MIPS_ASID_BITS=8
-CONFIG_MIPS_ASID_SHIFT=0
-CONFIG_MIPS_CLOCK_VSYSCALL=y
-CONFIG_MIPS_CM=y
-# CONFIG_MIPS_CMDLINE_DTB_EXTEND is not set
-CONFIG_MIPS_CMDLINE_FROM_BOOTLOADER=y
-# CONFIG_MIPS_CMDLINE_FROM_DTB is not set
-CONFIG_MIPS_CPC=y
-CONFIG_MIPS_CPS=y
-# CONFIG_MIPS_CPS_CPUIDLE is not set
-# CONFIG_MIPS_CPS_NS16550 is not set
-CONFIG_MIPS_CPS_PM=y
-CONFIG_MIPS_CPU_SCACHE=y
-# CONFIG_MIPS_ELF_APPENDED_DTB is not set
-CONFIG_MIPS_EXTERNAL_TIMER=y
-CONFIG_MIPS_GIC=y
-# CONFIG_MIPS_HUGE_TLB_SUPPORT is not set
-CONFIG_MIPS_L1_CACHE_SHIFT=5
-# CONFIG_MIPS_MACHINE is not set
-CONFIG_MIPS_MT=y
-CONFIG_MIPS_MT_FPAFF=y
-CONFIG_MIPS_MT_SMP=y
-CONFIG_MIPS_NO_APPENDED_DTB=y
-CONFIG_MIPS_PERF_SHARED_TC_COUNTERS=y
-# CONFIG_MIPS_RAW_APPENDED_DTB is not set
-CONFIG_MIPS_SPRAM=y
-# CONFIG_MIPS_VPE_LOADER is not set
-CONFIG_MMC=y
-CONFIG_MMC_BLOCK=y
-CONFIG_MMC_DW=y
-# CONFIG_MMC_DW_EXYNOS is not set
-# CONFIG_MMC_DW_K3 is not set
-CONFIG_MMC_DW_PLTFM=y
-CONFIG_MODULES_USE_ELF_REL=y
-CONFIG_MODULE_FORCE_UNLOAD=y
-CONFIG_MTD_CMDLINE_PARTS=y
-CONFIG_MTD_M25P80=y
-CONFIG_MTD_NAND=y
-CONFIG_MTD_NAND_ECC=y
-CONFIG_MTD_SPI_NAND=y
-CONFIG_MTD_SPI_NAND_DEVICES=y
-CONFIG_MTD_SPI_NOR=y
-CONFIG_MTD_SPI_NOR_USE_4K_SECTORS=y
-CONFIG_MTD_SPI_NOR_USE_4K_SECTORS_LIMIT=16384
-CONFIG_MTD_UBI=y
-CONFIG_MTD_UBI_BEB_LIMIT=20
-CONFIG_MTD_UBI_BLOCK=y
-CONFIG_MTD_UBI_FASTMAP=y
-# CONFIG_MTD_UBI_GLUEBI is not set
-CONFIG_MTD_UBI_WL_THRESHOLD=4096
-CONFIG_NAMESPACES=y
-CONFIG_NEED_DMA_MAP_STATE=y
-CONFIG_NET_FLOW_LIMIT=y
-CONFIG_NET_NS=y
-CONFIG_NET_PTP_CLASSIFY=y
-CONFIG_NLS=y
-CONFIG_NO_GENERIC_PCI_IOPORT_MAP=y
-CONFIG_NO_HZ=y
-CONFIG_NO_HZ_COMMON=y
-CONFIG_NO_HZ_IDLE=y
-# CONFIG_NO_IOPORT_MAP is not set
-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_NET=y
-CONFIG_PADATA=y
-CONFIG_PCI_DRIVERS_LEGACY=y
-CONFIG_PERF_USE_VMALLOC=y
-CONFIG_PGTABLE_LEVELS=2
-# CONFIG_PGTABLE_MAPPING is not set
-CONFIG_PHYLIB=y
-CONFIG_PHY_PISTACHIO_USB=y
-CONFIG_PINCTRL=y
-CONFIG_PINCTRL_PISTACHIO=y
-CONFIG_PISTACHIO_GPTIMER_CLKSRC=y
-CONFIG_POWER_SUPPLY=y
-CONFIG_PPS=y
-# CONFIG_PREEMPT_NONE is not set
-CONFIG_PREEMPT_VOLUNTARY=y
-CONFIG_PRINTK_TIME=y
-CONFIG_PROC_EVENTS=y
-CONFIG_PROFILING=y
-CONFIG_PTP_1588_CLOCK=y
-CONFIG_PWM=y
-CONFIG_PWM_IMG=y
-CONFIG_PWM_SYSFS=y
-CONFIG_QUEUED_RWLOCKS=y
-CONFIG_QUEUED_SPINLOCKS=y
-CONFIG_RATIONAL=y
-CONFIG_RCU_NEED_SEGCBLIST=y
-CONFIG_RCU_STALL_COMMON=y
-CONFIG_REGMAP=y
-CONFIG_REGMAP_I2C=y
-CONFIG_REGMAP_MMIO=y
-CONFIG_REGMAP_SPI=y
-CONFIG_REGULATOR=y
-CONFIG_REGULATOR_FIXED_VOLTAGE=y
-CONFIG_REGULATOR_GPIO=y
-CONFIG_RESET_CONTROLLER=y
-CONFIG_RESET_PISTACHIO=y
-CONFIG_RFS_ACCEL=y
-CONFIG_RPS=y
-CONFIG_SCHEDSTATS=y
-CONFIG_SCHED_INFO=y
-CONFIG_SCSI=y
-CONFIG_SCSI_SPI_ATTRS=y
-CONFIG_SERIAL_8250_DW=y
-# CONFIG_SERIAL_8250_FSL is not set
-CONFIG_SERIAL_OF_PLATFORM=y
-CONFIG_SG_POOL=y
-CONFIG_SMP=y
-CONFIG_SMP_UP=y
-CONFIG_SPI=y
-CONFIG_SPI_IMG_SPFI=y
-CONFIG_SPI_MASTER=y
-CONFIG_SRAM=y
-CONFIG_SRCU=y
-CONFIG_STMMAC_ETH=y
-CONFIG_STMMAC_PLATFORM=y
-CONFIG_SWPHY=y
-CONFIG_SYNC_R4K=y
-CONFIG_SYSCTL_EXCEPTION_TRACE=y
-CONFIG_SYS_HAS_CPU_MIPS32_R2=y
-CONFIG_SYS_HAS_EARLY_PRINTK=y
-CONFIG_SYS_SUPPORTS_32BIT_KERNEL=y
-CONFIG_SYS_SUPPORTS_ARBIT_HZ=y
-CONFIG_SYS_SUPPORTS_HOTPLUG_CPU=y
-CONFIG_SYS_SUPPORTS_LITTLE_ENDIAN=y
-CONFIG_SYS_SUPPORTS_MIPS_CPS=y
-CONFIG_SYS_SUPPORTS_MULTITHREADING=y
-CONFIG_SYS_SUPPORTS_RELOCATABLE=y
-CONFIG_SYS_SUPPORTS_SCHED_SMT=y
-CONFIG_SYS_SUPPORTS_SMP=y
-CONFIG_SYS_SUPPORTS_ZBOOT=y
-CONFIG_TICK_CPU_ACCOUNTING=y
-CONFIG_TIMER_OF=y
-CONFIG_TIMER_PROBE=y
-CONFIG_TMPFS_POSIX_ACL=y
-CONFIG_TREE_RCU=y
-CONFIG_TREE_SRCU=y
-CONFIG_UBIFS_FS=y
-# CONFIG_UBIFS_FS_ADVANCED_COMPR is not set
-CONFIG_UBIFS_FS_LZO=y
-CONFIG_UBIFS_FS_ZLIB=y
-CONFIG_USB=y
-CONFIG_USB_ANNOUNCE_NEW_DEVICES=y
-CONFIG_USB_COMMON=y
-CONFIG_USB_DWC2=y
-CONFIG_USB_DWC2_DUAL_ROLE=y
-# CONFIG_USB_DWC2_TRACK_MISSED_SOFS is not set
-CONFIG_USB_EHCI_HCD=y
-# CONFIG_USB_EHCI_HCD_PLATFORM is not set
-CONFIG_USB_GADGET=y
-CONFIG_USB_STORAGE=y
-CONFIG_USB_SUPPORT=y
-CONFIG_USER_NS=y
-CONFIG_USE_GENERIC_EARLY_PRINTK_8250=y
-CONFIG_USE_OF=y
-CONFIG_WATCHDOG_CORE=y
-CONFIG_WEAK_ORDERING=y
-CONFIG_XPS=y
-CONFIG_ZLIB_DEFLATE=y
-CONFIG_ZLIB_INFLATE=y
-CONFIG_ZSMALLOC=y
-# CONFIG_ZSMALLOC_STAT is not set
+++ /dev/null
-From a2dd154377c9aa6ddda00d39b8c7c334e4fa16ff Mon Sep 17 00:00:00 2001
-From: Damien Horsley <damien.horsley@imgtec.com>
-Date: Tue, 22 Mar 2016 12:46:09 +0000
-Subject: dmaengine: img-mdc: Handle early status read
-
-It is possible that mdc_tx_status may be called before the first
-node has been read from memory.
-
-In this case, the residue value stored in the register is undefined.
-Return the transfer size instead.
-
-Signed-off-by: Damien Horsley <damien.horsley@imgtec.com>
----
- drivers/dma/img-mdc-dma.c | 40 ++++++++++++++++++++++++----------------
- 1 file changed, 24 insertions(+), 16 deletions(-)
-
---- a/drivers/dma/img-mdc-dma.c
-+++ b/drivers/dma/img-mdc-dma.c
-@@ -620,25 +620,33 @@ static enum dma_status mdc_tx_status(str
- (MDC_CMDS_PROCESSED_CMDS_DONE_MASK + 1);
-
- /*
-- * If the command loaded event hasn't been processed yet, then
-- * the difference above includes an extra command.
-+ * If the first node has not yet been read from memory,
-+ * the residue register value is undefined
- */
-- if (!mdesc->cmd_loaded)
-- cmds--;
-- else
-- cmds += mdesc->list_cmds_done;
--
-- bytes = mdesc->list_xfer_size;
-- ldesc = mdesc->list;
-- for (i = 0; i < cmds; i++) {
-- bytes -= ldesc->xfer_size + 1;
-- ldesc = ldesc->next_desc;
-- }
-- if (ldesc) {
-- if (residue != MDC_TRANSFER_SIZE_MASK)
-- bytes -= ldesc->xfer_size - residue;
-+ if (!mdesc->cmd_loaded && !cmds) {
-+ bytes = mdesc->list_xfer_size;
-+ } else {
-+ /*
-+ * If the command loaded event hasn't been processed yet, then
-+ * the difference above includes an extra command.
-+ */
-+ if (!mdesc->cmd_loaded)
-+ cmds--;
- else
-+ cmds += mdesc->list_cmds_done;
-+
-+ bytes = mdesc->list_xfer_size;
-+ ldesc = mdesc->list;
-+ for (i = 0; i < cmds; i++) {
- bytes -= ldesc->xfer_size + 1;
-+ ldesc = ldesc->next_desc;
-+ }
-+ if (ldesc) {
-+ if (residue != MDC_TRANSFER_SIZE_MASK)
-+ bytes -= ldesc->xfer_size - residue;
-+ else
-+ bytes -= ldesc->xfer_size + 1;
-+ }
- }
- }
- spin_unlock_irqrestore(&mchan->vc.lock, flags);
+++ /dev/null
-From cd2a6af51553d38072cd31699b58d16ca6176ef5 Mon Sep 17 00:00:00 2001
-From: Ionela Voinescu <ionela.voinescu@imgtec.com>
-Date: Thu, 2 Feb 2017 16:46:14 +0000
-Subject: spi: img-spfi: Implement dual and quad mode
-
-For dual and quad modes to work the SPFI controller needs
-to have information about command/address/dummy bytes in the
-transaction register. This information is not relevant for
-single mode, and therefore it can have any value in the
-allowed range. Therefore, for any read or write transfers of less
-than 8 bytes (cmd = 1 byte, addr up to 7 bytes), SPFI will be
-configured, but not enabled (unless it is the last transfer in
-the queue). The transfer will be enabled by the subsequent tranfer.
-A pending transfer is determined by the content of the transaction
-register: if command part is set and tsize is not.
-
-This way we ensure that for dual and quad transactions
-the command request size will apear in the command/address part
-of the transaction register, while the data size will be in
-tsize, all data being sent/received in the same transaction (as
-set up in the transaction register).
-
-Signed-off-by: Ionela Voinescu <ionela.voinescu@imgtec.com>
-Signed-off-by: Ezequiel Garcia <ezequiel.garcia@imgtec.com>
----
- drivers/spi/spi-img-spfi.c | 96 ++++++++++++++++++++++++++++++++++++++++------
- 1 file changed, 85 insertions(+), 11 deletions(-)
-
---- a/drivers/spi/spi-img-spfi.c
-+++ b/drivers/spi/spi-img-spfi.c
-@@ -40,7 +40,8 @@
- #define SPFI_CONTROL_SOFT_RESET BIT(11)
- #define SPFI_CONTROL_SEND_DMA BIT(10)
- #define SPFI_CONTROL_GET_DMA BIT(9)
--#define SPFI_CONTROL_SE BIT(8)
-+#define SPFI_CONTROL_SE BIT(8)
-+#define SPFI_CONTROL_TX_RX BIT(1)
- #define SPFI_CONTROL_TMODE_SHIFT 5
- #define SPFI_CONTROL_TMODE_MASK 0x7
- #define SPFI_CONTROL_TMODE_SINGLE 0
-@@ -51,6 +52,10 @@
- #define SPFI_TRANSACTION 0x18
- #define SPFI_TRANSACTION_TSIZE_SHIFT 16
- #define SPFI_TRANSACTION_TSIZE_MASK 0xffff
-+#define SPFI_TRANSACTION_CMD_SHIFT 13
-+#define SPFI_TRANSACTION_CMD_MASK 0x7
-+#define SPFI_TRANSACTION_ADDR_SHIFT 10
-+#define SPFI_TRANSACTION_ADDR_MASK 0x7
-
- #define SPFI_PORT_STATE 0x1c
- #define SPFI_PORT_STATE_DEV_SEL_SHIFT 20
-@@ -87,6 +92,7 @@
- */
- #define SPFI_32BIT_FIFO_SIZE 64
- #define SPFI_8BIT_FIFO_SIZE 16
-+#define SPFI_DATA_REQUEST_MAX_SIZE 8
-
- struct img_spfi {
- struct device *dev;
-@@ -103,6 +109,8 @@ struct img_spfi {
- struct dma_chan *tx_ch;
- bool tx_dma_busy;
- bool rx_dma_busy;
-+
-+ bool complete;
- };
-
- struct img_spfi_device_data {
-@@ -123,9 +131,11 @@ static inline void spfi_start(struct img
- {
- u32 val;
-
-- val = spfi_readl(spfi, SPFI_CONTROL);
-- val |= SPFI_CONTROL_SPFI_EN;
-- spfi_writel(spfi, val, SPFI_CONTROL);
-+ if (spfi->complete) {
-+ val = spfi_readl(spfi, SPFI_CONTROL);
-+ val |= SPFI_CONTROL_SPFI_EN;
-+ spfi_writel(spfi, val, SPFI_CONTROL);
-+ }
- }
-
- static inline void spfi_reset(struct img_spfi *spfi)
-@@ -138,12 +148,21 @@ static int spfi_wait_all_done(struct img
- {
- unsigned long timeout = jiffies + msecs_to_jiffies(50);
-
-+ if (!(spfi->complete))
-+ return 0;
-+
- while (time_before(jiffies, timeout)) {
- u32 status = spfi_readl(spfi, SPFI_INTERRUPT_STATUS);
-
- if (status & SPFI_INTERRUPT_ALLDONETRIG) {
- spfi_writel(spfi, SPFI_INTERRUPT_ALLDONETRIG,
- SPFI_INTERRUPT_CLEAR);
-+ /*
-+ * Disable SPFI for it not to interfere with
-+ * pending transactions
-+ */
-+ spfi_writel(spfi, spfi_readl(spfi, SPFI_CONTROL)
-+ & ~SPFI_CONTROL_SPFI_EN, SPFI_CONTROL);
- return 0;
- }
- cpu_relax();
-@@ -494,9 +513,32 @@ static void img_spfi_config(struct spi_m
- struct spi_transfer *xfer)
- {
- struct img_spfi *spfi = spi_master_get_devdata(spi->master);
-- u32 val, div;
-+ u32 val, div, transact;
-+ bool is_pending;
-
- /*
-+ * For read or write transfers of less than 8 bytes (cmd = 1 byte,
-+ * addr up to 7 bytes), SPFI will be configured, but not enabled
-+ * (unless it is the last transfer in the queue).The transfer will
-+ * be enabled by the subsequent transfer.
-+ * A pending transfer is determined by the content of the
-+ * transaction register: if command part is set and tsize
-+ * is not
-+ */
-+ transact = spfi_readl(spfi, SPFI_TRANSACTION);
-+ is_pending = ((transact >> SPFI_TRANSACTION_CMD_SHIFT) &
-+ SPFI_TRANSACTION_CMD_MASK) &&
-+ (!((transact >> SPFI_TRANSACTION_TSIZE_SHIFT) &
-+ SPFI_TRANSACTION_TSIZE_MASK));
-+
-+ /* If there are no pending transactions it's OK to soft reset */
-+ if (!is_pending) {
-+ /* Start the transaction from a known (reset) state */
-+ spfi_reset(spfi);
-+ }
-+
-+ /*
-+ * Before anything else, set up parameters.
- * output = spfi_clk * (BITCLK / 512), where BITCLK must be a
- * power of 2 up to 128
- */
-@@ -509,20 +551,52 @@ static void img_spfi_config(struct spi_m
- val |= div << SPFI_DEVICE_PARAMETER_BITCLK_SHIFT;
- spfi_writel(spfi, val, SPFI_DEVICE_PARAMETER(spi->chip_select));
-
-- spfi_writel(spfi, xfer->len << SPFI_TRANSACTION_TSIZE_SHIFT,
-- SPFI_TRANSACTION);
-+ if (!list_is_last(&xfer->transfer_list, &master->cur_msg->transfers) &&
-+ /*
-+ * For duplex mode (both the tx and rx buffers are !NULL) the
-+ * CMD, ADDR, and DUMMY byte parts of the transaction register
-+ * should always be 0 and therefore the pending transfer
-+ * technique cannot be used.
-+ */
-+ (xfer->tx_buf) && (!xfer->rx_buf) &&
-+ (xfer->len <= SPFI_DATA_REQUEST_MAX_SIZE) && !is_pending) {
-+ transact = (1 & SPFI_TRANSACTION_CMD_MASK) <<
-+ SPFI_TRANSACTION_CMD_SHIFT;
-+ transact |= ((xfer->len - 1) & SPFI_TRANSACTION_ADDR_MASK) <<
-+ SPFI_TRANSACTION_ADDR_SHIFT;
-+ spfi->complete = false;
-+ } else {
-+ spfi->complete = true;
-+ if (is_pending) {
-+ /* Keep setup from pending transfer */
-+ transact |= ((xfer->len & SPFI_TRANSACTION_TSIZE_MASK) <<
-+ SPFI_TRANSACTION_TSIZE_SHIFT);
-+ } else {
-+ transact = ((xfer->len & SPFI_TRANSACTION_TSIZE_MASK) <<
-+ SPFI_TRANSACTION_TSIZE_SHIFT);
-+ }
-+ }
-+ spfi_writel(spfi, transact, SPFI_TRANSACTION);
-
- val = spfi_readl(spfi, SPFI_CONTROL);
- val &= ~(SPFI_CONTROL_SEND_DMA | SPFI_CONTROL_GET_DMA);
-- if (xfer->tx_buf)
-+ /*
-+ * We set up send DMA for pending transfers also, as
-+ * those are always send transfers
-+ */
-+ if ((xfer->tx_buf) || is_pending)
- val |= SPFI_CONTROL_SEND_DMA;
-- if (xfer->rx_buf)
-+ if (xfer->tx_buf)
-+ val |= SPFI_CONTROL_TX_RX;
-+ if (xfer->rx_buf) {
- val |= SPFI_CONTROL_GET_DMA;
-+ val &= ~SPFI_CONTROL_TX_RX;
-+ }
- val &= ~(SPFI_CONTROL_TMODE_MASK << SPFI_CONTROL_TMODE_SHIFT);
-- if (xfer->tx_nbits == SPI_NBITS_DUAL &&
-+ if (xfer->tx_nbits == SPI_NBITS_DUAL ||
- xfer->rx_nbits == SPI_NBITS_DUAL)
- val |= SPFI_CONTROL_TMODE_DUAL << SPFI_CONTROL_TMODE_SHIFT;
-- else if (xfer->tx_nbits == SPI_NBITS_QUAD &&
-+ else if (xfer->tx_nbits == SPI_NBITS_QUAD ||
- xfer->rx_nbits == SPI_NBITS_QUAD)
- val |= SPFI_CONTROL_TMODE_QUAD << SPFI_CONTROL_TMODE_SHIFT;
- val |= SPFI_CONTROL_SE;
+++ /dev/null
-From 145f5369510b86cd55c659388a26a0cc267f8874 Mon Sep 17 00:00:00 2001
-From: Ionela Voinescu <ionela.voinescu@imgtec.com>
-Date: Mon, 1 Feb 2016 10:58:08 +0000
-Subject: spi: img-spfi: set device select bits for SPFI port state
-
-Even if the chip select line is not controlled by the SPFI
-hardware, the device select bits need to be set to specify
-the chip select line in use for the hardware to know what
-parameters to use for the current transfer.
-
-Signed-off-by: Ionela Voinescu <ionela.voinescu@imgtec.com>
----
- drivers/spi/spi-img-spfi.c | 3 +++
- 1 file changed, 3 insertions(+)
-
---- a/drivers/spi/spi-img-spfi.c
-+++ b/drivers/spi/spi-img-spfi.c
-@@ -438,6 +438,9 @@ static int img_spfi_prepare(struct spi_m
- u32 val;
-
- val = spfi_readl(spfi, SPFI_PORT_STATE);
-+ val &= ~(SPFI_PORT_STATE_DEV_SEL_MASK <<
-+ SPFI_PORT_STATE_DEV_SEL_SHIFT);
-+ val |= msg->spi->chip_select << SPFI_PORT_STATE_DEV_SEL_SHIFT;
- if (msg->spi->mode & SPI_CPHA)
- val |= SPFI_PORT_STATE_CK_PHASE(msg->spi->chip_select);
- else
+++ /dev/null
-From 905ee06a9966113fe51d6bad1819759cb30fd0bd Mon Sep 17 00:00:00 2001
-From: Ionela Voinescu <ionela.voinescu@imgtec.com>
-Date: Tue, 9 Feb 2016 10:18:31 +0000
-Subject: spi: img-spfi: use device 0 configuration for all devices
-
-Given that we control the chip select line externally
-we can use only one parameter register (device 0 parameter
-register) and one set of configuration bits (port configuration
-bits for device 0) for all devices (all chip select lines).
-
-Signed-off-by: Ionela Voinescu <ionela.voinescu@imgtec.com>
----
- drivers/spi/spi-img-spfi.c | 23 ++++++++++++++++-------
- 1 file changed, 16 insertions(+), 7 deletions(-)
-
---- a/drivers/spi/spi-img-spfi.c
-+++ b/drivers/spi/spi-img-spfi.c
-@@ -437,18 +437,23 @@ static int img_spfi_prepare(struct spi_m
- struct img_spfi *spfi = spi_master_get_devdata(master);
- u32 val;
-
-+ /*
-+ * The chip select line is controlled externally so
-+ * we can use the CS0 configuration for all devices
-+ */
- val = spfi_readl(spfi, SPFI_PORT_STATE);
-+
-+ /* 0 for device selection */
- val &= ~(SPFI_PORT_STATE_DEV_SEL_MASK <<
- SPFI_PORT_STATE_DEV_SEL_SHIFT);
-- val |= msg->spi->chip_select << SPFI_PORT_STATE_DEV_SEL_SHIFT;
- if (msg->spi->mode & SPI_CPHA)
-- val |= SPFI_PORT_STATE_CK_PHASE(msg->spi->chip_select);
-+ val |= SPFI_PORT_STATE_CK_PHASE(0);
- else
-- val &= ~SPFI_PORT_STATE_CK_PHASE(msg->spi->chip_select);
-+ val &= ~SPFI_PORT_STATE_CK_PHASE(0);
- if (msg->spi->mode & SPI_CPOL)
-- val |= SPFI_PORT_STATE_CK_POL(msg->spi->chip_select);
-+ val |= SPFI_PORT_STATE_CK_POL(0);
- else
-- val &= ~SPFI_PORT_STATE_CK_POL(msg->spi->chip_select);
-+ val &= ~SPFI_PORT_STATE_CK_POL(0);
- spfi_writel(spfi, val, SPFI_PORT_STATE);
-
- return 0;
-@@ -548,11 +553,15 @@ static void img_spfi_config(struct spi_m
- div = DIV_ROUND_UP(clk_get_rate(spfi->spfi_clk), xfer->speed_hz);
- div = clamp(512 / (1 << get_count_order(div)), 1, 128);
-
-- val = spfi_readl(spfi, SPFI_DEVICE_PARAMETER(spi->chip_select));
-+ /*
-+ * The chip select line is controlled externally so
-+ * we can use the CS0 parameters for all devices
-+ */
-+ val = spfi_readl(spfi, SPFI_DEVICE_PARAMETER(0));
- val &= ~(SPFI_DEVICE_PARAMETER_BITCLK_MASK <<
- SPFI_DEVICE_PARAMETER_BITCLK_SHIFT);
- val |= div << SPFI_DEVICE_PARAMETER_BITCLK_SHIFT;
-- spfi_writel(spfi, val, SPFI_DEVICE_PARAMETER(spi->chip_select));
-+ spfi_writel(spfi, val, SPFI_DEVICE_PARAMETER(0));
-
- if (!list_is_last(&xfer->transfer_list, &master->cur_msg->transfers) &&
- /*
+++ /dev/null
-From 56466f505f58f44b69feb7eaed3b506842800456 Mon Sep 17 00:00:00 2001
-From: Ionela Voinescu <ionela.voinescu@imgtec.com>
-Date: Tue, 1 Mar 2016 17:49:45 +0000
-Subject: spi: img-spfi: RX maximum burst size for DMA is 8
-
-The depth of the FIFOs is 16 bytes. The DMA request line is tied
-to the half full/empty (depending on the use of the TX or RX FIFO)
-threshold. For the TX FIFO, if you set a burst size of 8 (equal to
-half the depth) the first burst goes into FIFO without any issues,
-but due the latency involved (the time the data leaves the DMA
-engine to the time it arrives at the FIFO), the DMA might trigger
-another burst of 8. But given that there is no space for 2 additonal
-bursts of 8, this would result in a failure. Therefore, we have to
-keep the burst size for TX to 4 to accomodate for an extra burst.
-
-For the read (RX) scenario, the DMA request line goes high when
-there is at least 8 entries in the FIFO (half full), and we can
-program the burst size to be 8 because the risk of accidental burst
-does not exist. The DMA engine will not trigger another read until
-the read data for all the burst it has sent out has been received.
-
-While here, move the burst size setting outside of the if/else branches
-as they have the same value for both 8 and 32 bit data widths.
-
-Signed-off-by: Ionela Voinescu <ionela.voinescu@imgtec.com>
----
- drivers/spi/spi-img-spfi.c | 6 ++----
- 1 file changed, 2 insertions(+), 4 deletions(-)
-
---- a/drivers/spi/spi-img-spfi.c
-+++ b/drivers/spi/spi-img-spfi.c
-@@ -346,12 +346,11 @@ static int img_spfi_start_dma(struct spi
- if (xfer->len % 4 == 0) {
- rxconf.src_addr = spfi->phys + SPFI_RX_32BIT_VALID_DATA;
- rxconf.src_addr_width = 4;
-- rxconf.src_maxburst = 4;
- } else {
- rxconf.src_addr = spfi->phys + SPFI_RX_8BIT_VALID_DATA;
- rxconf.src_addr_width = 1;
-- rxconf.src_maxburst = 4;
- }
-+ rxconf.src_maxburst = 8;
- dmaengine_slave_config(spfi->rx_ch, &rxconf);
-
- rxdesc = dmaengine_prep_slave_sg(spfi->rx_ch, xfer->rx_sg.sgl,
-@@ -370,12 +369,11 @@ static int img_spfi_start_dma(struct spi
- if (xfer->len % 4 == 0) {
- txconf.dst_addr = spfi->phys + SPFI_TX_32BIT_VALID_DATA;
- txconf.dst_addr_width = 4;
-- txconf.dst_maxburst = 4;
- } else {
- txconf.dst_addr = spfi->phys + SPFI_TX_8BIT_VALID_DATA;
- txconf.dst_addr_width = 1;
-- txconf.dst_maxburst = 4;
- }
-+ txconf.dst_maxburst = 4;
- dmaengine_slave_config(spfi->tx_ch, &txconf);
-
- txdesc = dmaengine_prep_slave_sg(spfi->tx_ch, xfer->tx_sg.sgl,
+++ /dev/null
-From 5fcca3fd4b621d7b5bdeca18d36dfc6ca6cfe383 Mon Sep 17 00:00:00 2001
-From: Ionela Voinescu <ionela.voinescu@imgtec.com>
-Date: Wed, 10 Aug 2016 11:42:26 +0100
-Subject: spi: img-spfi: finish every transfer cleanly
-
-Before this change, the interrupt status bit that signaled
-the end of a tranfers was cleared in the wait_all_done
-function. That functionality triggered issues for DMA
-duplex transactions where the wait function was called
-twice, in both the TX and RX callbacks.
-
-In order to fix the issue, clear all interrupt data bits
-at the end of a PIO transfer or at the end of both TX and RX
-duplex transfers, if the transfer is not a pending tranfer
-(command waiting for data). After that, the status register
-is checked for new incoming data or new data requests to be
-signaled. If SPFI finished cleanly, no new interrupt data
-bits should be set.
-
-Signed-off-by: Ionela Voinescu <ionela.voinescu@imgtec.com>
----
- drivers/spi/spi-img-spfi.c | 49 +++++++++++++++++++++++++++++++++-------------
- 1 file changed, 35 insertions(+), 14 deletions(-)
-
---- a/drivers/spi/spi-img-spfi.c
-+++ b/drivers/spi/spi-img-spfi.c
-@@ -83,6 +83,14 @@
- #define SPFI_INTERRUPT_SDE BIT(1)
- #define SPFI_INTERRUPT_SDTRIG BIT(0)
-
-+#define SPFI_INTERRUPT_DATA_BITS (SPFI_INTERRUPT_SDHF |\
-+ SPFI_INTERRUPT_SDFUL |\
-+ SPFI_INTERRUPT_GDEX32BIT |\
-+ SPFI_INTERRUPT_GDHF |\
-+ SPFI_INTERRUPT_GDFUL |\
-+ SPFI_INTERRUPT_ALLDONETRIG |\
-+ SPFI_INTERRUPT_GDEX8BIT)
-+
- /*
- * There are four parallel FIFOs of 16 bytes each. The word buffer
- * (*_32BIT_VALID_DATA) accesses all four FIFOs at once, resulting in an
-@@ -144,6 +152,23 @@ static inline void spfi_reset(struct img
- spfi_writel(spfi, 0, SPFI_CONTROL);
- }
-
-+static inline void spfi_finish(struct img_spfi *spfi)
-+{
-+ if (!(spfi->complete))
-+ return;
-+
-+ /* Clear data bits as all transfers(TX and RX) have finished */
-+ spfi_writel(spfi, SPFI_INTERRUPT_DATA_BITS, SPFI_INTERRUPT_CLEAR);
-+ if (spfi_readl(spfi, SPFI_INTERRUPT_STATUS) & SPFI_INTERRUPT_DATA_BITS) {
-+ dev_err(spfi->dev, "SPFI did not finish transfer cleanly.\n");
-+ spfi_reset(spfi);
-+ }
-+ /* Disable SPFI for it not to interfere with pending transactions */
-+ spfi_writel(spfi,
-+ spfi_readl(spfi, SPFI_CONTROL) & ~SPFI_CONTROL_SPFI_EN,
-+ SPFI_CONTROL);
-+}
-+
- static int spfi_wait_all_done(struct img_spfi *spfi)
- {
- unsigned long timeout = jiffies + msecs_to_jiffies(50);
-@@ -152,19 +177,9 @@ static int spfi_wait_all_done(struct img
- return 0;
-
- while (time_before(jiffies, timeout)) {
-- u32 status = spfi_readl(spfi, SPFI_INTERRUPT_STATUS);
--
-- if (status & SPFI_INTERRUPT_ALLDONETRIG) {
-- spfi_writel(spfi, SPFI_INTERRUPT_ALLDONETRIG,
-- SPFI_INTERRUPT_CLEAR);
-- /*
-- * Disable SPFI for it not to interfere with
-- * pending transactions
-- */
-- spfi_writel(spfi, spfi_readl(spfi, SPFI_CONTROL)
-- & ~SPFI_CONTROL_SPFI_EN, SPFI_CONTROL);
-+ if (spfi_readl(spfi, SPFI_INTERRUPT_STATUS) &
-+ SPFI_INTERRUPT_ALLDONETRIG)
- return 0;
-- }
- cpu_relax();
- }
-
-@@ -296,6 +311,8 @@ static int img_spfi_start_pio(struct spi
- }
-
- ret = spfi_wait_all_done(spfi);
-+ spfi_finish(spfi);
-+
- if (ret < 0)
- return ret;
-
-@@ -311,8 +328,10 @@ static void img_spfi_dma_rx_cb(void *dat
-
- spin_lock_irqsave(&spfi->lock, flags);
- spfi->rx_dma_busy = false;
-- if (!spfi->tx_dma_busy)
-+ if (!spfi->tx_dma_busy) {
-+ spfi_finish(spfi);
- spi_finalize_current_transfer(spfi->master);
-+ }
- spin_unlock_irqrestore(&spfi->lock, flags);
- }
-
-@@ -325,8 +344,10 @@ static void img_spfi_dma_tx_cb(void *dat
-
- spin_lock_irqsave(&spfi->lock, flags);
- spfi->tx_dma_busy = false;
-- if (!spfi->rx_dma_busy)
-+ if (!spfi->rx_dma_busy) {
-+ spfi_finish(spfi);
- spi_finalize_current_transfer(spfi->master);
-+ }
- spin_unlock_irqrestore(&spfi->lock, flags);
- }
-
+++ /dev/null
-From b46f8c74afdd30cd52bfdcc2231470a0bab04416 Mon Sep 17 00:00:00 2001
-From: James Hogan <james.hogan@imgtec.com>
-Date: Fri, 22 Apr 2016 18:22:45 +0100
-Subject: clockevents: Retry programming min delta up to 10 times
-
-Under virtualisation it is possible to get unexpected latency during a
-clockevent device's set_next_event() callback which can make it return
--ETIME even for a delta based on min_delta_ns.
-
-The clockevents_program_min_delta() implementation for
-CONFIG_GENERIC_CLOCKEVENTS_MIN_ADJUST=n doesn't handle retries when this
-happens, nor does clockevents_program_event() or its callers when force
-is true (for example hrtimer_reprogram()). This can result in hangs
-until the clock event device does a full period.
-
-It isn't appropriate to use MIN_ADJUST in this case as occasional
-hypervisor induced high latency will cause min_delta_ns to quickly
-increase to the maximum.
-Instead, borrow the retry pattern from the MIN_ADJUST case, but without
-making adjustments. We retry up to 10 times before giving up.
-
-(picked https://patchwork.kernel.org/patch/8909491/)
-
-Signed-off-by: James Hogan <james.hogan@imgtec.com>
----
- kernel/time/clockevents.c | 26 +++++++++++++++++++-------
- 1 file changed, 19 insertions(+), 7 deletions(-)
-
---- a/kernel/time/clockevents.c
-+++ b/kernel/time/clockevents.c
-@@ -281,16 +281,28 @@ static int clockevents_program_min_delta
- {
- unsigned long long clc;
- int64_t delta;
-+ int i;
-
-- delta = dev->min_delta_ns;
-- dev->next_event = ktime_add_ns(ktime_get(), delta);
-+ for (i = 0;;) {
-+ delta = dev->min_delta_ns;
-+ dev->next_event = ktime_add_ns(ktime_get(), delta);
-
-- if (clockevent_state_shutdown(dev))
-- return 0;
-+ if (clockevent_state_shutdown(dev))
-+ return 0;
-
-- dev->retries++;
-- clc = ((unsigned long long) delta * dev->mult) >> dev->shift;
-- return dev->set_next_event((unsigned long) clc, dev);
-+ dev->retries++;
-+ clc = ((unsigned long long) delta * dev->mult) >> dev->shift;
-+ if (dev->set_next_event((unsigned long) clc, dev) == 0)
-+ return 0;
-+
-+ if (++i > 9) {
-+ /*
-+ * We tried 10 times to program the device with the
-+ * given min_delta_ns. Get out of here.
-+ */
-+ return -ETIME;
-+ }
-+ }
- }
-
- #endif /* CONFIG_GENERIC_CLOCKEVENTS_MIN_ADJUST */
+++ /dev/null
-From 3642843a06025ec333d7e92580cf52cb8db2a652 Mon Sep 17 00:00:00 2001
-From: Govindraj Raja <Govindraj.Raja@imgtec.com>
-Date: Fri, 8 Jan 2016 16:36:07 +0000
-Subject: clk: pistachio: Fix wrong SDHost card speed
-
-The SDHost currently clocks the card 4x slower than it
-should do, because there is fixed divide by 4 in the
-sdhost wrapper that is not present in the clock tree.
-To model this add a fixed divide by 4 clock node in
-the SDHost clock path.
-
-This will ensure the right clock frequency is selected when
-the mmc driver tries to configure frequency on card insert.
-
-Signed-off-by: Govindraj Raja <Govindraj.Raja@imgtec.com>
----
- drivers/clk/pistachio/clk-pistachio.c | 3 ++-
- include/dt-bindings/clock/pistachio-clk.h | 1 +
- 2 files changed, 3 insertions(+), 1 deletion(-)
-
---- a/drivers/clk/pistachio/clk-pistachio.c
-+++ b/drivers/clk/pistachio/clk-pistachio.c
-@@ -44,7 +44,7 @@ static struct pistachio_gate pistachio_g
- GATE(CLK_AUX_ADC_INTERNAL, "aux_adc_internal", "sys_internal_div",
- 0x104, 22),
- GATE(CLK_AUX_ADC, "aux_adc", "aux_adc_div", 0x104, 23),
-- GATE(CLK_SD_HOST, "sd_host", "sd_host_div", 0x104, 24),
-+ GATE(CLK_SD_HOST, "sd_host", "sd_host_div4", 0x104, 24),
- GATE(CLK_BT, "bt", "bt_div", 0x104, 25),
- GATE(CLK_BT_DIV4, "bt_div4", "bt_div4_div", 0x104, 26),
- GATE(CLK_BT_DIV8, "bt_div8", "bt_div8_div", 0x104, 27),
-@@ -54,6 +54,7 @@ static struct pistachio_gate pistachio_g
- static struct pistachio_fixed_factor pistachio_ffs[] __initdata = {
- FIXED_FACTOR(CLK_WIFI_DIV4, "wifi_div4", "wifi_pll", 4),
- FIXED_FACTOR(CLK_WIFI_DIV8, "wifi_div8", "wifi_pll", 8),
-+ FIXED_FACTOR(CLK_SDHOST_DIV4, "sd_host_div4", "sd_host_div", 4),
- };
-
- static struct pistachio_div pistachio_divs[] __initdata = {
---- a/include/dt-bindings/clock/pistachio-clk.h
-+++ b/include/dt-bindings/clock/pistachio-clk.h
-@@ -21,6 +21,7 @@
- /* Fixed-factor clocks */
- #define CLK_WIFI_DIV4 16
- #define CLK_WIFI_DIV8 17
-+#define CLK_SDHOST_DIV4 18
-
- /* Gate clocks */
- #define CLK_MIPS 32
+++ /dev/null
-From 981c1d416af45eff207227aec106381ac23aac99 Mon Sep 17 00:00:00 2001
-From: Ian Pozella <Ian.Pozella@imgtec.com>
-Date: Mon, 20 Feb 2017 10:00:52 +0000
-Subject: MIPS: DTS: img: marduk: switch mmc to 1 bit mode
-
-The mmc block in Pistachio allows 1 to 8 data bits to be used.
-Marduk uses 4 bits allowing the upper 4 bits to be allocated
-to the Mikrobus ports. However these bits are still connected
-internally meaning the mmc block recieves signals on all data lines
-and seems the internal HW CRC checks get corrupted by this erroneous
-data.
-
-We cannot control what data is sent on these lines because they go
-to external ports. 1 bit mode does not exhibit the issue hence the
-safe default is to use this. If a user knows that in their use case
-they will not use the upper bits then they can set to 4 bit mode in
-order to improve performance.
-
-Also make sure that the upper 4 bits don't get allocated to the mmc
-driver (the default is to assign all 8 pins) so they can be allocated
-to other drivers. Allocating all 4 despite setting 1 bit mode as this
-matches what is there in hardware.
-
-Signed-off-by: Ian Pozella <Ian.Pozella@imgtec.com>
----
- arch/mips/boot/dts/img/pistachio_marduk.dts | 3 ++-
- 1 file changed, 2 insertions(+), 1 deletion(-)
-
---- a/arch/mips/boot/dts/img/pistachio_marduk.dts
-+++ b/arch/mips/boot/dts/img/pistachio_marduk.dts
-@@ -120,7 +120,7 @@
-
- &sdhost {
- status = "okay";
-- bus-width = <4>;
-+ bus-width = <1>;
- disable-wp;
- };
-
-@@ -130,6 +130,7 @@
-
- &pin_sdhost_data {
- drive-strength = <2>;
-+ pins = "mfio17", "mfio18", "mfio19", "mfio20";
- };
-
- &pwm {
+++ /dev/null
-From f32bc2aa01edcba2f2ed5db151cf183eac9ef919 Mon Sep 17 00:00:00 2001
-From: Abhimanyu Vishwakarma <Abhimanyu.Vishwakarma@imgtec.com>
-Date: Sat, 25 Feb 2017 16:42:50 +0000
-Subject: mtd: nor: support mtd name from device tree
-
-Signed-off-by: Abhimanyu Vishwakarma <Abhimanyu.Vishwakarma@imgtec.com>
----
- drivers/mtd/spi-nor/spi-nor.c | 8 +++++++-
- 1 file changed, 7 insertions(+), 1 deletion(-)
-
---- a/drivers/mtd/spi-nor/spi-nor.c
-+++ b/drivers/mtd/spi-nor/spi-nor.c
-@@ -2671,6 +2671,7 @@ int spi_nor_scan(struct spi_nor *nor, co
- struct device *dev = nor->dev;
- struct mtd_info *mtd = &nor->mtd;
- struct device_node *np = spi_nor_get_flash_node(nor);
-+ const char __maybe_unused *of_mtd_name = NULL;
- int ret;
- int i;
-
-@@ -2746,7 +2747,12 @@ int spi_nor_scan(struct spi_nor *nor, co
- spi_nor_wait_till_ready(nor);
- }
-
-- if (!mtd->name)
-+#ifdef CONFIG_MTD_OF_PARTS
-+ of_property_read_string(np, "linux,mtd-name", &of_mtd_name);
-+#endif
-+ if (of_mtd_name)
-+ mtd->name = of_mtd_name;
-+ else if (!mtd->name)
- mtd->name = dev_name(dev);
- mtd->priv = nor;
- mtd->type = MTD_NORFLASH;
+++ /dev/null
-From 42ebff638003be18fab503b37de4ad7853244e95 Mon Sep 17 00:00:00 2001
-From: Ezequiel Garcia <ezequiel.garcia@imgtec.com>
-Date: Sat, 25 Feb 2017 15:58:22 +0000
-Subject: mtd: nand: Check length of ID before reading bits per cell
-
-The table-based NAND identification currently reads the number
-of bits per cell from the 3rd byte of the extended ID. This is done
-for the so-called 'full ID' devices; i.e. devices that have a known
-length ID.
-
-However, if the ID length is shorter than three, there's no 3rd byte,
-and so it's wrong to read the bits per cell from there. Fix this by
-adding a check for the ID length.
-
-(picked from http://lists.infradead.org/pipermail/linux-mtd/2014-December/056764.html)
-
-Signed-off-by: Ezequiel Garcia <ezequiel.garcia@imgtec.com>
----
- drivers/mtd/nand/nand_base.c | 3 ++-
- 1 file changed, 2 insertions(+), 1 deletion(-)
-
---- a/drivers/mtd/nand/nand_base.c
-+++ b/drivers/mtd/nand/nand_base.c
-@@ -3803,7 +3803,8 @@ static bool find_full_id_nand(struct nan
- mtd->erasesize = type->erasesize;
- mtd->oobsize = type->oobsize;
-
-- chip->bits_per_cell = nand_get_bits_per_cell(id_data[2]);
-+ if (type->id_len > 2)
-+ chip->bits_per_cell = nand_get_bits_per_cell(id_data[2]);
- chip->chipsize = (uint64_t)type->chipsize << 20;
- chip->options |= type->options;
- chip->ecc_strength_ds = NAND_ECC_STRENGTH(type);
+++ /dev/null
-From a4bc33b205fd9b1db862f1e45173dba57b0fa57f Mon Sep 17 00:00:00 2001
-From: Ezequiel Garcia <ezequiel.garcia@imgtec.com>
-Date: Sat, 25 Feb 2017 15:43:09 +0000
-Subject: mtd: nand: Add JEDEC manufacturer ID for Gigadevice
-
-This commit adds Gigadevice to the list of manufacturer ID and name strings.
-
-(picked from http://lists.infradead.org/pipermail/linux-mtd/2014-December/056765.html)
-
-Signed-off-by: Ezequiel Garcia <ezequiel.garcia@imgtec.com>
----
- drivers/mtd/nand/nand_ids.c | 1 +
- include/linux/mtd/rawnand.h | 1 +
- 2 files changed, 2 insertions(+)
-
---- a/drivers/mtd/nand/nand_ids.c
-+++ b/drivers/mtd/nand/nand_ids.c
-@@ -184,6 +184,7 @@ static const struct nand_manufacturer na
- {NAND_MFR_SANDISK, "SanDisk"},
- {NAND_MFR_INTEL, "Intel"},
- {NAND_MFR_ATO, "ATO"},
-+ {NAND_MFR_GIGADEVICE, "Gigadevice"},
- {NAND_MFR_WINBOND, "Winbond"},
- };
-
---- a/include/linux/mtd/rawnand.h
-+++ b/include/linux/mtd/rawnand.h
-@@ -1014,6 +1014,7 @@ static inline void *nand_get_manufacture
- #define NAND_MFR_SANDISK 0x45
- #define NAND_MFR_INTEL 0x89
- #define NAND_MFR_ATO 0x9b
-+#define NAND_MFR_GIGADEVICE 0xc8
- #define NAND_MFR_WINBOND 0xef
-
-
+++ /dev/null
-From 082a89a78e29b15008284df90441747cb742f149 Mon Sep 17 00:00:00 2001
-From: Ezequiel Garcia <ezequiel.garcia@imgtec.com>
-Date: Tue, 2 Dec 2014 09:58:52 -0300
-Subject: mtd: Introduce SPI NAND framework
-
-Add a new framework, to support SPI NAND devices. The framework registers
-a NAND chip and handles the generic SPI NAND protocol, calling device-specific
-hooks for each SPI NAND command.
-
-The following is the stack design, from userspace to hardware. This commit
-adds the "SPI NAND core" layer.
-
- Userspace
- ------------------
- MTD
- ------------------
- NAND core
- ------------------
- SPI NAND core
- ------------------
- SPI NAND device
- ------------------
- SPI core
- ------------------
- SPI master
- ------------------
- Hardware
-
-(based on http://lists.infradead.org/pipermail/linux-mtd/2014-December/056763.html)
-
-Signed-off-by: Ionela Voinescu <ionela.voinescu@imgtec.com>
-Signed-off-by: Ezequiel Garcia <ezequiel.garcia@imgtec.com>
-Signed-off-by: Ian Pozella <Ian.Pozella@imgtec.com>
----
- drivers/mtd/Kconfig | 2 +
- drivers/mtd/Makefile | 1 +
- drivers/mtd/spi-nand/Kconfig | 7 +
- drivers/mtd/spi-nand/Makefile | 1 +
- drivers/mtd/spi-nand/spi-nand-base.c | 566 +++++++++++++++++++++++++++++++++++
- include/linux/mtd/spi-nand.h | 54 ++++
- 6 files changed, 631 insertions(+)
- create mode 100644 drivers/mtd/spi-nand/Kconfig
- create mode 100644 drivers/mtd/spi-nand/Makefile
- create mode 100644 drivers/mtd/spi-nand/spi-nand-base.c
- create mode 100644 include/linux/mtd/spi-nand.h
-
---- a/drivers/mtd/Kconfig
-+++ b/drivers/mtd/Kconfig
-@@ -373,6 +373,8 @@ source "drivers/mtd/onenand/Kconfig"
-
- source "drivers/mtd/lpddr/Kconfig"
-
-+source "drivers/mtd/spi-nand/Kconfig"
-+
- source "drivers/mtd/spi-nor/Kconfig"
-
- source "drivers/mtd/ubi/Kconfig"
---- a/drivers/mtd/Makefile
-+++ b/drivers/mtd/Makefile
-@@ -37,6 +37,7 @@ inftl-objs := inftlcore.o inftlmount.o
-
- obj-y += chips/ lpddr/ maps/ devices/ nand/ onenand/ tests/
-
-+obj-$(CONFIG_MTD_SPI_NAND) += spi-nand/
- obj-$(CONFIG_MTD_SPI_NOR) += spi-nor/
- obj-$(CONFIG_MTD_UBI) += ubi/
-
---- /dev/null
-+++ b/drivers/mtd/spi-nand/Kconfig
-@@ -0,0 +1,7 @@
-+menuconfig MTD_SPI_NAND
-+ tristate "SPI NAND device support"
-+ depends on MTD
-+ select MTD_NAND
-+ help
-+ This is the framework for the SPI NAND.
-+
---- /dev/null
-+++ b/drivers/mtd/spi-nand/Makefile
-@@ -0,0 +1 @@
-+obj-$(CONFIG_MTD_SPI_NAND) += spi-nand-base.o
---- /dev/null
-+++ b/drivers/mtd/spi-nand/spi-nand-base.c
-@@ -0,0 +1,566 @@
-+/*
-+ * Copyright (C) 2014 Imagination Technologies Ltd.
-+ *
-+ * 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; version 2 of the License.
-+ *
-+ * Notes:
-+ * 1. Erase and program operations need to call write_enable() first,
-+ * to clear the enable bit. This bit is cleared automatically after
-+ * the erase or program operation.
-+ *
-+ */
-+
-+#include <linux/device.h>
-+#include <linux/err.h>
-+#include <linux/errno.h>
-+#include <linux/kernel.h>
-+#include <linux/module.h>
-+#include <linux/mtd/rawnand.h>
-+#include <linux/mtd/mtd.h>
-+#include <linux/mtd/partitions.h>
-+#include <linux/mtd/spi-nand.h>
-+#include <linux/of.h>
-+#include <linux/slab.h>
-+
-+/* Registers common to all devices */
-+#define SPI_NAND_LOCK_REG 0xa0
-+#define SPI_NAND_PROT_UNLOCK_ALL 0x0
-+
-+#define SPI_NAND_FEATURE_REG 0xb0
-+#define SPI_NAND_ECC_EN BIT(4)
-+#define SPI_NAND_QUAD_EN BIT(0)
-+
-+#define SPI_NAND_STATUS_REG 0xc0
-+#define SPI_NAND_STATUS_REG_ECC_MASK 0x3
-+#define SPI_NAND_STATUS_REG_ECC_SHIFT 4
-+#define SPI_NAND_STATUS_REG_PROG_FAIL BIT(3)
-+#define SPI_NAND_STATUS_REG_ERASE_FAIL BIT(2)
-+#define SPI_NAND_STATUS_REG_WREN BIT(1)
-+#define SPI_NAND_STATUS_REG_BUSY BIT(0)
-+
-+#define SPI_NAND_CMD_BUF_LEN 8
-+
-+/* Rewind and fill the buffer with 0xff */
-+static void spi_nand_clear_buffer(struct spi_nand *snand)
-+{
-+ snand->buf_start = 0;
-+ memset(snand->data_buf, 0xff, snand->buf_size);
-+}
-+
-+static int spi_nand_enable_ecc(struct spi_nand *snand)
-+{
-+ int ret;
-+
-+ ret = snand->read_reg(snand, SPI_NAND_FEATURE_REG, snand->buf);
-+ if (ret)
-+ return ret;
-+
-+ snand->buf[0] |= SPI_NAND_ECC_EN;
-+ ret = snand->write_reg(snand, SPI_NAND_FEATURE_REG, snand->buf);
-+ if (ret)
-+ return ret;
-+ snand->ecc = true;
-+
-+ return 0;
-+}
-+
-+static int spi_nand_disable_ecc(struct spi_nand *snand)
-+{
-+ int ret;
-+
-+ ret = snand->read_reg(snand, SPI_NAND_FEATURE_REG, snand->buf);
-+ if (ret)
-+ return ret;
-+
-+ snand->buf[0] &= ~SPI_NAND_ECC_EN;
-+ ret = snand->write_reg(snand, SPI_NAND_FEATURE_REG, snand->buf);
-+ if (ret)
-+ return ret;
-+ snand->ecc = false;
-+
-+ return 0;
-+}
-+
-+static int spi_nand_enable_quad(struct spi_nand *snand)
-+{
-+ int ret;
-+
-+ ret = snand->read_reg(snand, SPI_NAND_FEATURE_REG, snand->buf);
-+ if (ret)
-+ return ret;
-+
-+ snand->buf[0] |= SPI_NAND_QUAD_EN;
-+ ret = snand->write_reg(snand, SPI_NAND_FEATURE_REG, snand->buf);
-+ if (ret)
-+ return ret;
-+
-+ return 0;
-+}
-+/*
-+ * Wait until the status register busy bit is cleared.
-+ * Returns a negatie errno on error or time out, and a non-negative status
-+ * value if the device is ready.
-+ */
-+static int spi_nand_wait_till_ready(struct spi_nand *snand)
-+{
-+ unsigned long deadline = jiffies + msecs_to_jiffies(100);
-+ bool timeout = false;
-+ int ret;
-+
-+ /*
-+ * Perhaps we should set a different timeout for each
-+ * operation (reset, read, write, erase).
-+ */
-+ while (!timeout) {
-+ if (time_after_eq(jiffies, deadline))
-+ timeout = true;
-+
-+ ret = snand->read_reg(snand, SPI_NAND_STATUS_REG, snand->buf);
-+ if (ret < 0) {
-+ dev_err(snand->dev, "error reading status register\n");
-+ return ret;
-+ } else if (!(snand->buf[0] & SPI_NAND_STATUS_REG_BUSY)) {
-+ return snand->buf[0];
-+ }
-+
-+ cond_resched();
-+ }
-+
-+ dev_err(snand->dev, "operation timed out\n");
-+
-+ return -ETIMEDOUT;
-+}
-+
-+static int spi_nand_reset(struct spi_nand *snand)
-+{
-+ int ret;
-+
-+ ret = snand->reset(snand);
-+ if (ret < 0) {
-+ dev_err(snand->dev, "reset command failed\n");
-+ return ret;
-+ }
-+
-+ /*
-+ * The NAND core won't wait after a device reset, so we need
-+ * to do that here.
-+ */
-+ ret = spi_nand_wait_till_ready(snand);
-+ if (ret < 0)
-+ return ret;
-+ return 0;
-+}
-+
-+static int spi_nand_status(struct spi_nand *snand)
-+{
-+ int ret, status;
-+
-+ ret = snand->read_reg(snand, SPI_NAND_STATUS_REG, snand->buf);
-+ if (ret < 0) {
-+ dev_err(snand->dev, "error reading status register\n");
-+ return ret;
-+ }
-+ status = snand->buf[0];
-+
-+ /* Convert this into standard NAND_STATUS values */
-+ if (status & SPI_NAND_STATUS_REG_BUSY)
-+ snand->buf[0] = 0;
-+ else
-+ snand->buf[0] = NAND_STATUS_READY;
-+
-+ if (status & SPI_NAND_STATUS_REG_PROG_FAIL ||
-+ status & SPI_NAND_STATUS_REG_ERASE_FAIL)
-+ snand->buf[0] |= NAND_STATUS_FAIL;
-+
-+ /*
-+ * Since we unlock the entire device at initialization, unconditionally
-+ * set the WP bit to indicate it's not protected.
-+ */
-+ snand->buf[0] |= NAND_STATUS_WP;
-+ return 0;
-+}
-+
-+static int spi_nand_erase(struct spi_nand *snand, int page_addr)
-+{
-+ int ret;
-+
-+ ret = snand->write_enable(snand);
-+ if (ret < 0) {
-+ dev_err(snand->dev, "write enable command failed\n");
-+ return ret;
-+ }
-+
-+ ret = snand->block_erase(snand, page_addr);
-+ if (ret < 0) {
-+ dev_err(snand->dev, "block erase command failed\n");
-+ return ret;
-+ }
-+
-+ return 0;
-+}
-+
-+static int spi_nand_write(struct spi_nand *snand)
-+{
-+ int ret;
-+
-+ /* Enable quad mode */
-+ ret = spi_nand_enable_quad(snand);
-+ if (ret) {
-+ dev_err(snand->dev, "error %d enabling quad mode\n", ret);
-+ return ret;
-+ }
-+ /* Store the page to cache */
-+ ret = snand->store_cache(snand, 0, snand->buf_size, snand->data_buf);
-+ if (ret < 0) {
-+ dev_err(snand->dev, "error %d storing page 0x%x to cache\n",
-+ ret, snand->page_addr);
-+ return ret;
-+ }
-+
-+ ret = snand->write_enable(snand);
-+ if (ret < 0) {
-+ dev_err(snand->dev, "write enable command failed\n");
-+ return ret;
-+ }
-+
-+ /* Get page from the device cache into our internal buffer */
-+ ret = snand->write_page(snand, snand->page_addr);
-+ if (ret < 0) {
-+ dev_err(snand->dev, "error %d reading page 0x%x from cache\n",
-+ ret, snand->page_addr);
-+ return ret;
-+ }
-+
-+ return 0;
-+}
-+
-+static int spi_nand_read_id(struct spi_nand *snand)
-+{
-+ int ret;
-+
-+ ret = snand->read_id(snand, snand->data_buf);
-+ if (ret < 0) {
-+ dev_err(snand->dev, "error %d reading ID\n", ret);
-+ return ret;
-+ }
-+ return 0;
-+}
-+
-+static int spi_nand_read_page(struct spi_nand *snand, unsigned int page_addr,
-+ unsigned int page_offset, size_t length)
-+{
-+ unsigned int corrected = 0, ecc_error = 0;
-+ int ret;
-+
-+ /* Load a page into the cache register */
-+ ret = snand->load_page(snand, page_addr);
-+ if (ret < 0) {
-+ dev_err(snand->dev, "error %d loading page 0x%x to cache\n",
-+ ret, page_addr);
-+ return ret;
-+ }
-+
-+ ret = spi_nand_wait_till_ready(snand);
-+ if (ret < 0)
-+ return ret;
-+
-+ if (snand->ecc) {
-+ snand->get_ecc_status(ret, &corrected, &ecc_error);
-+ snand->bitflips = corrected;
-+
-+ /*
-+ * If there's an ECC error, print a message and notify MTD
-+ * about it. Then complete the read, to load actual data on
-+ * the buffer (instead of the status result).
-+ */
-+ if (ecc_error) {
-+ dev_err(snand->dev,
-+ "internal ECC error reading page 0x%x\n",
-+ page_addr);
-+ snand->nand_chip.mtd.ecc_stats.failed++;
-+ } else {
-+ snand->nand_chip.mtd.ecc_stats.corrected += corrected;
-+ }
-+ }
-+
-+ /* Enable quad mode */
-+ ret = spi_nand_enable_quad(snand);
-+ if (ret) {
-+ dev_err(snand->dev, "error %d enabling quad mode\n", ret);
-+ return ret;
-+ }
-+ /* Get page from the device cache into our internal buffer */
-+ ret = snand->read_cache(snand, page_offset, length, snand->data_buf);
-+ if (ret < 0) {
-+ dev_err(snand->dev, "error %d reading page 0x%x from cache\n",
-+ ret, page_addr);
-+ return ret;
-+ }
-+ return 0;
-+}
-+
-+static u8 spi_nand_read_byte(struct mtd_info *mtd)
-+{
-+ struct nand_chip *chip = mtd_to_nand(mtd);
-+ struct spi_nand *snand = nand_get_controller_data(chip);
-+ char val = 0xff;
-+
-+ if (snand->buf_start < snand->buf_size)
-+ val = snand->data_buf[snand->buf_start++];
-+ return val;
-+}
-+
-+static void spi_nand_write_buf(struct mtd_info *mtd, const u8 *buf, int len)
-+{
-+ struct nand_chip *chip = mtd_to_nand(mtd);
-+ struct spi_nand *snand = nand_get_controller_data(chip);
-+ size_t n = min_t(size_t, len, snand->buf_size - snand->buf_start);
-+
-+ memcpy(snand->data_buf + snand->buf_start, buf, n);
-+ snand->buf_start += n;
-+}
-+
-+static void spi_nand_read_buf(struct mtd_info *mtd, u8 *buf, int len)
-+{
-+ struct nand_chip *chip = mtd_to_nand(mtd);
-+ struct spi_nand *snand = nand_get_controller_data(chip);
-+ size_t n = min_t(size_t, len, snand->buf_size - snand->buf_start);
-+
-+ memcpy(buf, snand->data_buf + snand->buf_start, n);
-+ snand->buf_start += n;
-+}
-+
-+static int spi_nand_write_page_hwecc(struct mtd_info *mtd,
-+ struct nand_chip *chip, const uint8_t *buf, int oob_required,
-+ int page)
-+{
-+ chip->write_buf(mtd, buf, mtd->writesize);
-+ chip->write_buf(mtd, chip->oob_poi, mtd->oobsize);
-+
-+ return 0;
-+}
-+
-+static int spi_nand_read_page_hwecc(struct mtd_info *mtd,
-+ struct nand_chip *chip, uint8_t *buf, int oob_required,
-+ int page)
-+{
-+ struct spi_nand *snand = nand_get_controller_data(chip);
-+
-+ chip->read_buf(mtd, buf, mtd->writesize);
-+ chip->read_buf(mtd, chip->oob_poi, mtd->oobsize);
-+
-+ return snand->bitflips;
-+}
-+
-+static int spi_nand_waitfunc(struct mtd_info *mtd, struct nand_chip *chip)
-+{
-+ struct spi_nand *snand = nand_get_controller_data(chip);
-+ int ret;
-+
-+ ret = spi_nand_wait_till_ready(snand);
-+
-+ if (ret < 0) {
-+ return NAND_STATUS_FAIL;
-+ } else if (ret & SPI_NAND_STATUS_REG_PROG_FAIL) {
-+ dev_err(snand->dev, "page program failed\n");
-+ return NAND_STATUS_FAIL;
-+ } else if (ret & SPI_NAND_STATUS_REG_ERASE_FAIL) {
-+ dev_err(snand->dev, "block erase failed\n");
-+ return NAND_STATUS_FAIL;
-+ }
-+
-+ return NAND_STATUS_READY;
-+}
-+
-+static void spi_nand_cmdfunc(struct mtd_info *mtd, unsigned int command,
-+ int column, int page_addr)
-+{
-+ struct nand_chip *chip = mtd_to_nand(mtd);
-+ struct spi_nand *snand = nand_get_controller_data(chip);
-+
-+ /*
-+ * In case there's any unsupported command, let's make sure
-+ * we don't keep garbage around in the buffer.
-+ */
-+ if (command != NAND_CMD_PAGEPROG) {
-+ spi_nand_clear_buffer(snand);
-+ snand->page_addr = 0;
-+ }
-+
-+ switch (command) {
-+ case NAND_CMD_READ0:
-+ spi_nand_read_page(snand, page_addr, 0, mtd->writesize);
-+ break;
-+ case NAND_CMD_READOOB:
-+ spi_nand_disable_ecc(snand);
-+ spi_nand_read_page(snand, page_addr, mtd->writesize,
-+ mtd->oobsize);
-+ spi_nand_enable_ecc(snand);
-+ break;
-+ case NAND_CMD_READID:
-+ spi_nand_read_id(snand);
-+ break;
-+ case NAND_CMD_ERASE1:
-+ spi_nand_erase(snand, page_addr);
-+ break;
-+ case NAND_CMD_ERASE2:
-+ /* There's nothing to do here, as the erase is one-step */
-+ break;
-+ case NAND_CMD_SEQIN:
-+ snand->buf_start = column;
-+ snand->page_addr = page_addr;
-+ break;
-+ case NAND_CMD_PAGEPROG:
-+ spi_nand_write(snand);
-+ break;
-+ case NAND_CMD_STATUS:
-+ spi_nand_status(snand);
-+ break;
-+ case NAND_CMD_RESET:
-+ spi_nand_reset(snand);
-+ break;
-+ default:
-+ dev_err(&mtd->dev, "unknown command 0x%x\n", command);
-+ }
-+}
-+
-+static void spi_nand_select_chip(struct mtd_info *mtd, int chip)
-+{
-+ /* We need this to override the default */
-+}
-+
-+int spi_nand_check(struct spi_nand *snand)
-+{
-+ if (!snand->dev)
-+ return -ENODEV;
-+ if (!snand->read_cache)
-+ return -ENODEV;
-+ if (!snand->load_page)
-+ return -ENODEV;
-+ if (!snand->store_cache)
-+ return -ENODEV;
-+ if (!snand->write_page)
-+ return -ENODEV;
-+ if (!snand->write_reg)
-+ return -ENODEV;
-+ if (!snand->read_reg)
-+ return -ENODEV;
-+ if (!snand->block_erase)
-+ return -ENODEV;
-+ if (!snand->reset)
-+ return -ENODEV;
-+ if (!snand->write_enable)
-+ return -ENODEV;
-+ if (!snand->write_disable)
-+ return -ENODEV;
-+ if (!snand->get_ecc_status)
-+ return -ENODEV;
-+ return 0;
-+}
-+
-+int spi_nand_register(struct spi_nand *snand, struct nand_flash_dev *flash_ids)
-+{
-+ struct nand_chip *chip = &snand->nand_chip;
-+ struct mtd_info *mtd = nand_to_mtd(chip);
-+ struct device_node *np = snand->dev->of_node;
-+ const char __maybe_unused *of_mtd_name = NULL;
-+ int ret;
-+
-+ /* Let's check all the hooks are in-place so we don't panic later */
-+ ret = spi_nand_check(snand);
-+ if (ret)
-+ return ret;
-+
-+ nand_set_controller_data(chip, snand);
-+ nand_set_flash_node(chip, np);
-+ chip->read_buf = spi_nand_read_buf;
-+ chip->write_buf = spi_nand_write_buf;
-+ chip->read_byte = spi_nand_read_byte;
-+ chip->cmdfunc = spi_nand_cmdfunc;
-+ chip->waitfunc = spi_nand_waitfunc;
-+ chip->select_chip = spi_nand_select_chip;
-+ chip->options |= NAND_NO_SUBPAGE_WRITE;
-+ chip->bits_per_cell = 1;
-+
-+ mtd_set_ooblayout(mtd, snand->ooblayout);
-+ chip->ecc.read_page = spi_nand_read_page_hwecc;
-+ chip->ecc.write_page = spi_nand_write_page_hwecc;
-+ chip->ecc.mode = NAND_ECC_HW;
-+
-+ if (of_property_read_bool(np, "nand-on-flash-bbt"))
-+ chip->bbt_options |= NAND_BBT_USE_FLASH | NAND_BBT_NO_OOB;
-+
-+#ifdef CONFIG_MTD_OF_PARTS
-+ of_property_read_string(np, "linux,mtd-name", &of_mtd_name);
-+#endif
-+ if (of_mtd_name)
-+ mtd->name = of_mtd_name;
-+ else
-+ mtd->name = snand->name;
-+ mtd->owner = THIS_MODULE;
-+
-+ /* Allocate buffer to be used to read/write the internal registers */
-+ snand->buf = kmalloc(SPI_NAND_CMD_BUF_LEN, GFP_KERNEL);
-+ if (!snand->buf)
-+ return -ENOMEM;
-+
-+ /* This is enabled at device power up but we'd better make sure */
-+ ret = spi_nand_enable_ecc(snand);
-+ if (ret)
-+ return ret;
-+
-+ /* Preallocate buffer for flash identification (NAND_CMD_READID) */
-+ snand->buf_size = SPI_NAND_CMD_BUF_LEN;
-+ snand->data_buf = kmalloc(snand->buf_size, GFP_KERNEL);
-+
-+ ret = nand_scan_ident(mtd, 1, flash_ids);
-+ if (ret)
-+ return ret;
-+
-+ /*
-+ * SPI NAND has on-die ECC, which means we can correct as much as
-+ * we are required to. This must be done after identification of
-+ * the device.
-+ */
-+ chip->ecc.strength = chip->ecc_strength_ds;
-+ chip->ecc.size = chip->ecc_step_ds;
-+
-+ /*
-+ * Unlock all the device before calling nand_scan_tail. This is needed
-+ * in case the in-flash bad block table needs to be created.
-+ * We could override __nand_unlock(), but since it's not currently used
-+ * by the NAND core we call this explicitly.
-+ */
-+ snand->buf[0] = SPI_NAND_PROT_UNLOCK_ALL;
-+ ret = snand->write_reg(snand, SPI_NAND_LOCK_REG, snand->buf);
-+ if (ret)
-+ return ret;
-+
-+ /* Free the buffer and allocate a good one, to fit a page plus OOB */
-+ kfree(snand->data_buf);
-+
-+ snand->buf_size = mtd->writesize + mtd->oobsize;
-+ snand->data_buf = kmalloc(snand->buf_size, GFP_KERNEL);
-+ if (!snand->data_buf)
-+ return -ENOMEM;
-+
-+ ret = nand_scan_tail(mtd);
-+ if (ret)
-+ return ret;
-+
-+ return mtd_device_register(mtd, NULL, 0);
-+}
-+EXPORT_SYMBOL_GPL(spi_nand_register);
-+
-+void spi_nand_unregister(struct spi_nand *snand)
-+{
-+ kfree(snand->buf);
-+ kfree(snand->data_buf);
-+}
-+EXPORT_SYMBOL_GPL(spi_nand_unregister);
-+
-+MODULE_AUTHOR("Ezequiel Garcia <ezequiel.garcia@imgtec.com>");
-+MODULE_DESCRIPTION("Framework for SPI NAND");
-+MODULE_LICENSE("GPL v2");
---- /dev/null
-+++ b/include/linux/mtd/spi-nand.h
-@@ -0,0 +1,54 @@
-+/*
-+ * Copyright (C) 2014 Imagination Technologies Ltd.
-+ *
-+ * 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; version 2 of the License.
-+ */
-+
-+#ifndef __LINUX_MTD_SPI_NAND_H
-+#define __LINUX_MTD_SPI_NAND_H
-+
-+#include <linux/mtd/mtd.h>
-+#include <linux/mtd/rawnand.h>
-+
-+struct spi_nand {
-+ struct nand_chip nand_chip;
-+ struct device *dev;
-+ const char *name;
-+
-+ u8 *buf, *data_buf;
-+ size_t buf_size;
-+ off_t buf_start;
-+ unsigned int page_addr;
-+ unsigned int bitflips;
-+ bool ecc;
-+ struct mtd_ooblayout_ops *ooblayout;
-+
-+ int (*reset)(struct spi_nand *snand);
-+ int (*read_id)(struct spi_nand *snand, u8 *buf);
-+
-+ int (*write_disable)(struct spi_nand *snand);
-+ int (*write_enable)(struct spi_nand *snand);
-+
-+ int (*read_reg)(struct spi_nand *snand, u8 opcode, u8 *buf);
-+ int (*write_reg)(struct spi_nand *snand, u8 opcode, u8 *buf);
-+ void (*get_ecc_status)(unsigned int status,
-+ unsigned int *corrected,
-+ unsigned int *ecc_errors);
-+
-+ int (*store_cache)(struct spi_nand *snand, unsigned int page_offset,
-+ size_t length, u8 *write_buf);
-+ int (*write_page)(struct spi_nand *snand, unsigned int page_addr);
-+ int (*load_page)(struct spi_nand *snand, unsigned int page_addr);
-+ int (*read_cache)(struct spi_nand *snand, unsigned int page_offset,
-+ size_t length, u8 *read_buf);
-+ int (*block_erase)(struct spi_nand *snand, unsigned int page_addr);
-+
-+ void *priv;
-+};
-+
-+int spi_nand_register(struct spi_nand *snand, struct nand_flash_dev *flash_ids);
-+void spi_nand_unregister(struct spi_nand *snand);
-+
-+#endif
+++ /dev/null
-From 7723e59d483a883578115a73eb87eb7fff0ff724 Mon Sep 17 00:00:00 2001
-From: Ezequiel Garcia <ezequiel.garcia@imgtec.com>
-Date: Tue, 28 Feb 2017 10:37:24 +0000
-Subject: mtd: spi-nand: Support Gigadevice GD5F
-
-This commit uses the recently introduced SPI NAND framework to support
-the Gigadevice GD5F serial NAND device.
-
-The current support includes:
-
- * Page read and page program operations (using on-die ECC)
- * Page out-of-band read
- * Erase
- * Reset
- * Device status retrieval
- * Device ID retrieval
-
-(based on http://lists.infradead.org/pipermail/linux-mtd/2014-December/056769.html)
-
-Signed-off-by: Ezequiel Garcia <ezequiel.garcia@imgtec.com>
-Signed-off-by: Ian Pozella <Ian.Pozella@imgtec.com>
----
- drivers/mtd/spi-nand/Kconfig | 10 +
- drivers/mtd/spi-nand/Makefile | 1 +
- drivers/mtd/spi-nand/spi-nand-device.c | 472 +++++++++++++++++++++++++++++++++
- 3 files changed, 483 insertions(+)
- create mode 100644 drivers/mtd/spi-nand/spi-nand-device.c
-
---- a/drivers/mtd/spi-nand/Kconfig
-+++ b/drivers/mtd/spi-nand/Kconfig
-@@ -5,3 +5,13 @@ menuconfig MTD_SPI_NAND
- help
- This is the framework for the SPI NAND.
-
-+if MTD_SPI_NAND
-+
-+config MTD_SPI_NAND_DEVICES
-+ tristate "Support for SPI NAND devices"
-+ default y
-+ depends on MTD_SPI_NAND
-+ help
-+ Select this option if you require support for SPI NAND devices.
-+
-+endif # MTD_SPI_NAND
---- a/drivers/mtd/spi-nand/Makefile
-+++ b/drivers/mtd/spi-nand/Makefile
-@@ -1 +1,2 @@
- obj-$(CONFIG_MTD_SPI_NAND) += spi-nand-base.o
-+obj-$(CONFIG_MTD_SPI_NAND_DEVICES) += spi-nand-device.o
---- /dev/null
-+++ b/drivers/mtd/spi-nand/spi-nand-device.c
-@@ -0,0 +1,472 @@
-+/*
-+ * Copyright (C) 2014 Imagination Technologies Ltd.
-+ *
-+ * 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; version 2 of the License.
-+ *
-+ * Notes:
-+ * 1. We avoid using a stack-allocated buffer for SPI messages. Using
-+ * a kmalloced buffer is probably better, given we shouldn't assume
-+ * any particular usage by SPI core.
-+ */
-+
-+#include <linux/device.h>
-+#include <linux/err.h>
-+#include <linux/errno.h>
-+#include <linux/module.h>
-+#include <linux/mtd/mtd.h>
-+#include <linux/mtd/partitions.h>
-+#include <linux/mtd/spi-nand.h>
-+#include <linux/sizes.h>
-+#include <linux/spi/spi.h>
-+
-+/* SPI NAND commands */
-+#define SPI_NAND_WRITE_ENABLE 0x06
-+#define SPI_NAND_WRITE_DISABLE 0x04
-+#define SPI_NAND_GET_FEATURE 0x0f
-+#define SPI_NAND_SET_FEATURE 0x1f
-+#define SPI_NAND_PAGE_READ 0x13
-+#define SPI_NAND_READ_CACHE 0x03
-+#define SPI_NAND_FAST_READ_CACHE 0x0b
-+#define SPI_NAND_READ_CACHE_X2 0x3b
-+#define SPI_NAND_READ_CACHE_X4 0x6b
-+#define SPI_NAND_READ_CACHE_DUAL_IO 0xbb
-+#define SPI_NAND_READ_CACHE_QUAD_IO 0xeb
-+#define SPI_NAND_READ_ID 0x9f
-+#define SPI_NAND_PROGRAM_LOAD 0x02
-+#define SPI_NAND_PROGRAM_LOAD4 0x32
-+#define SPI_NAND_PROGRAM_EXEC 0x10
-+#define SPI_NAND_PROGRAM_LOAD_RANDOM 0x84
-+#define SPI_NAND_PROGRAM_LOAD_RANDOM4 0xc4
-+#define SPI_NAND_BLOCK_ERASE 0xd8
-+#define SPI_NAND_RESET 0xff
-+
-+#define SPI_NAND_GD5F_READID_LEN 2
-+
-+#define SPI_NAND_GD5F_ECC_MASK (BIT(0) | BIT(1) | BIT(2))
-+#define SPI_NAND_GD5F_ECC_UNCORR (BIT(0) | BIT(1) | BIT(2))
-+#define SPI_NAND_GD5F_ECC_SHIFT 4
-+
-+static int spi_nand_gd5f_ooblayout_256_ecc(struct mtd_info *mtd, int section,
-+ struct mtd_oob_region *oobregion)
-+{
-+ if (section)
-+ return -ERANGE;
-+
-+ oobregion->offset = 128;
-+ oobregion->length = 128;
-+
-+ return 0;
-+}
-+
-+static int spi_nand_gd5f_ooblayout_256_free(struct mtd_info *mtd, int section,
-+ struct mtd_oob_region *oobregion)
-+{
-+ if (section)
-+ return -ERANGE;
-+
-+ oobregion->offset = 1;
-+ oobregion->length = 127;
-+
-+ return 0;
-+}
-+
-+static const struct mtd_ooblayout_ops spi_nand_gd5f_oob_256_ops = {
-+ .ecc = spi_nand_gd5f_ooblayout_256_ecc,
-+ .free = spi_nand_gd5f_ooblayout_256_free,
-+};
-+
-+static struct nand_flash_dev spi_nand_flash_ids[] = {
-+ {
-+ .name = "SPI NAND 512MiB 3,3V",
-+ .id = { NAND_MFR_GIGADEVICE, 0xb4 },
-+ .chipsize = 512,
-+ .pagesize = SZ_4K,
-+ .erasesize = SZ_256K,
-+ .id_len = 2,
-+ .oobsize = 256,
-+ .ecc.strength_ds = 8,
-+ .ecc.step_ds = 512,
-+ },
-+ {
-+ .name = "SPI NAND 512MiB 1,8V",
-+ .id = { NAND_MFR_GIGADEVICE, 0xa4 },
-+ .chipsize = 512,
-+ .pagesize = SZ_4K,
-+ .erasesize = SZ_256K,
-+ .id_len = 2,
-+ .oobsize = 256,
-+ .ecc.strength_ds = 8,
-+ .ecc.step_ds = 512,
-+ },
-+};
-+
-+enum spi_nand_device_variant {
-+ SPI_NAND_GENERIC,
-+ SPI_NAND_GD5F,
-+};
-+
-+struct spi_nand_device_cmd {
-+
-+ /*
-+ * Command and address. I/O errors have been observed if a
-+ * separate spi_transfer is used for command and address,
-+ * so keep them together.
-+ */
-+ u32 n_cmd;
-+ u8 cmd[5];
-+
-+ /* Tx data */
-+ u32 n_tx;
-+ u8 *tx_buf;
-+
-+ /* Rx data */
-+ u32 n_rx;
-+ u8 *rx_buf;
-+ u8 rx_nbits;
-+ u8 tx_nbits;
-+};
-+
-+struct spi_nand_device {
-+ struct spi_nand spi_nand;
-+ struct spi_device *spi;
-+
-+ struct spi_nand_device_cmd cmd;
-+};
-+
-+static int spi_nand_send_command(struct spi_device *spi,
-+ struct spi_nand_device_cmd *cmd)
-+{
-+ struct spi_message message;
-+ struct spi_transfer x[2];
-+
-+ if (!cmd->n_cmd) {
-+ dev_err(&spi->dev, "cannot send an empty command\n");
-+ return -EINVAL;
-+ }
-+
-+ if (cmd->n_tx && cmd->n_rx) {
-+ dev_err(&spi->dev, "cannot send and receive data at the same time\n");
-+ return -EINVAL;
-+ }
-+
-+ spi_message_init(&message);
-+ memset(x, 0, sizeof(x));
-+
-+ /* Command and address */
-+ x[0].len = cmd->n_cmd;
-+ x[0].tx_buf = cmd->cmd;
-+ x[0].tx_nbits = cmd->tx_nbits;
-+ spi_message_add_tail(&x[0], &message);
-+
-+ /* Data to be transmitted */
-+ if (cmd->n_tx) {
-+ x[1].len = cmd->n_tx;
-+ x[1].tx_buf = cmd->tx_buf;
-+ x[1].tx_nbits = cmd->tx_nbits;
-+ spi_message_add_tail(&x[1], &message);
-+ }
-+
-+ /* Data to be received */
-+ if (cmd->n_rx) {
-+ x[1].len = cmd->n_rx;
-+ x[1].rx_buf = cmd->rx_buf;
-+ x[1].rx_nbits = cmd->rx_nbits;
-+ spi_message_add_tail(&x[1], &message);
-+ }
-+
-+ return spi_sync(spi, &message);
-+}
-+
-+static int spi_nand_device_reset(struct spi_nand *snand)
-+{
-+ struct spi_nand_device *snand_dev = snand->priv;
-+ struct spi_nand_device_cmd *cmd = &snand_dev->cmd;
-+
-+ memset(cmd, 0, sizeof(struct spi_nand_device_cmd));
-+ cmd->n_cmd = 1;
-+ cmd->cmd[0] = SPI_NAND_RESET;
-+
-+ dev_dbg(snand->dev, "%s\n", __func__);
-+
-+ return spi_nand_send_command(snand_dev->spi, cmd);
-+}
-+
-+static int spi_nand_device_read_reg(struct spi_nand *snand, u8 opcode, u8 *buf)
-+{
-+ struct spi_nand_device *snand_dev = snand->priv;
-+ struct spi_nand_device_cmd *cmd = &snand_dev->cmd;
-+
-+ memset(cmd, 0, sizeof(struct spi_nand_device_cmd));
-+ cmd->n_cmd = 2;
-+ cmd->cmd[0] = SPI_NAND_GET_FEATURE;
-+ cmd->cmd[1] = opcode;
-+ cmd->n_rx = 1;
-+ cmd->rx_buf = buf;
-+
-+ dev_dbg(snand->dev, "%s: reg 0%x\n", __func__, opcode);
-+
-+ return spi_nand_send_command(snand_dev->spi, cmd);
-+}
-+
-+static int spi_nand_device_write_reg(struct spi_nand *snand, u8 opcode, u8 *buf)
-+{
-+ struct spi_nand_device *snand_dev = snand->priv;
-+ struct spi_nand_device_cmd *cmd = &snand_dev->cmd;
-+
-+ memset(cmd, 0, sizeof(struct spi_nand_device_cmd));
-+ cmd->n_cmd = 2;
-+ cmd->cmd[0] = SPI_NAND_SET_FEATURE;
-+ cmd->cmd[1] = opcode;
-+ cmd->n_tx = 1;
-+ cmd->tx_buf = buf;
-+
-+ dev_dbg(snand->dev, "%s: reg 0%x\n", __func__, opcode);
-+
-+ return spi_nand_send_command(snand_dev->spi, cmd);
-+}
-+
-+static int spi_nand_device_write_enable(struct spi_nand *snand)
-+{
-+ struct spi_nand_device *snand_dev = snand->priv;
-+ struct spi_nand_device_cmd *cmd = &snand_dev->cmd;
-+
-+ memset(cmd, 0, sizeof(struct spi_nand_device_cmd));
-+ cmd->n_cmd = 1;
-+ cmd->cmd[0] = SPI_NAND_WRITE_ENABLE;
-+
-+ dev_dbg(snand->dev, "%s\n", __func__);
-+
-+ return spi_nand_send_command(snand_dev->spi, cmd);
-+}
-+
-+static int spi_nand_device_write_disable(struct spi_nand *snand)
-+{
-+ struct spi_nand_device *snand_dev = snand->priv;
-+ struct spi_nand_device_cmd *cmd = &snand_dev->cmd;
-+
-+ memset(cmd, 0, sizeof(struct spi_nand_device_cmd));
-+ cmd->n_cmd = 1;
-+ cmd->cmd[0] = SPI_NAND_WRITE_DISABLE;
-+
-+ dev_dbg(snand->dev, "%s\n", __func__);
-+
-+ return spi_nand_send_command(snand_dev->spi, cmd);
-+}
-+
-+static int spi_nand_device_write_page(struct spi_nand *snand,
-+ unsigned int page_addr)
-+{
-+ struct spi_nand_device *snand_dev = snand->priv;
-+ struct spi_nand_device_cmd *cmd = &snand_dev->cmd;
-+
-+ memset(cmd, 0, sizeof(struct spi_nand_device_cmd));
-+ cmd->n_cmd = 4;
-+ cmd->cmd[0] = SPI_NAND_PROGRAM_EXEC;
-+ cmd->cmd[1] = (u8)((page_addr & 0xff0000) >> 16);
-+ cmd->cmd[2] = (u8)((page_addr & 0xff00) >> 8);
-+ cmd->cmd[3] = (u8)(page_addr & 0xff);
-+
-+ dev_dbg(snand->dev, "%s: page 0x%x\n", __func__, page_addr);
-+
-+ return spi_nand_send_command(snand_dev->spi, cmd);
-+}
-+
-+static int spi_nand_device_store_cache(struct spi_nand *snand,
-+ unsigned int page_offset, size_t length,
-+ u8 *write_buf)
-+{
-+ struct spi_nand_device *snand_dev = snand->priv;
-+ struct spi_nand_device_cmd *cmd = &snand_dev->cmd;
-+ struct spi_device *spi = snand_dev->spi;
-+
-+ memset(cmd, 0, sizeof(struct spi_nand_device_cmd));
-+ cmd->n_cmd = 3;
-+ cmd->cmd[0] = spi->mode & SPI_TX_QUAD ? SPI_NAND_PROGRAM_LOAD4 :
-+ SPI_NAND_PROGRAM_LOAD;
-+ cmd->cmd[1] = (u8)((page_offset & 0xff00) >> 8);
-+ cmd->cmd[2] = (u8)(page_offset & 0xff);
-+ cmd->n_tx = length;
-+ cmd->tx_buf = write_buf;
-+ cmd->tx_nbits = spi->mode & SPI_TX_QUAD ? 4 : 1;
-+
-+ dev_dbg(snand->dev, "%s: offset 0x%x\n", __func__, page_offset);
-+
-+ return spi_nand_send_command(snand_dev->spi, cmd);
-+}
-+
-+static int spi_nand_device_load_page(struct spi_nand *snand,
-+ unsigned int page_addr)
-+{
-+ struct spi_nand_device *snand_dev = snand->priv;
-+ struct spi_nand_device_cmd *cmd = &snand_dev->cmd;
-+
-+ memset(cmd, 0, sizeof(struct spi_nand_device_cmd));
-+ cmd->n_cmd = 4;
-+ cmd->cmd[0] = SPI_NAND_PAGE_READ;
-+ cmd->cmd[1] = (u8)((page_addr & 0xff0000) >> 16);
-+ cmd->cmd[2] = (u8)((page_addr & 0xff00) >> 8);
-+ cmd->cmd[3] = (u8)(page_addr & 0xff);
-+
-+ dev_dbg(snand->dev, "%s: page 0x%x\n", __func__, page_addr);
-+
-+ return spi_nand_send_command(snand_dev->spi, cmd);
-+}
-+
-+static int spi_nand_device_read_cache(struct spi_nand *snand,
-+ unsigned int page_offset, size_t length,
-+ u8 *read_buf)
-+{
-+ struct spi_nand_device *snand_dev = snand->priv;
-+ struct spi_nand_device_cmd *cmd = &snand_dev->cmd;
-+ struct spi_device *spi = snand_dev->spi;
-+
-+ memset(cmd, 0, sizeof(struct spi_nand_device_cmd));
-+ if ((spi->mode & SPI_RX_DUAL) || (spi->mode & SPI_RX_QUAD))
-+ cmd->n_cmd = 5;
-+ else
-+ cmd->n_cmd = 4;
-+ cmd->cmd[0] = (spi->mode & SPI_RX_QUAD) ? SPI_NAND_READ_CACHE_X4 :
-+ ((spi->mode & SPI_RX_DUAL) ? SPI_NAND_READ_CACHE_X2 :
-+ SPI_NAND_READ_CACHE);
-+ cmd->cmd[1] = 0; /* dummy byte */
-+ cmd->cmd[2] = (u8)((page_offset & 0xff00) >> 8);
-+ cmd->cmd[3] = (u8)(page_offset & 0xff);
-+ cmd->cmd[4] = 0; /* dummy byte */
-+ cmd->n_rx = length;
-+ cmd->rx_buf = read_buf;
-+ cmd->rx_nbits = (spi->mode & SPI_RX_QUAD) ? 4 :
-+ ((spi->mode & SPI_RX_DUAL) ? 2 : 1);
-+
-+ dev_dbg(snand->dev, "%s: offset 0x%x\n", __func__, page_offset);
-+
-+ return spi_nand_send_command(snand_dev->spi, cmd);
-+}
-+
-+static int spi_nand_device_block_erase(struct spi_nand *snand,
-+ unsigned int page_addr)
-+{
-+ struct spi_nand_device *snand_dev = snand->priv;
-+ struct spi_nand_device_cmd *cmd = &snand_dev->cmd;
-+
-+ memset(cmd, 0, sizeof(struct spi_nand_device_cmd));
-+ cmd->n_cmd = 4;
-+ cmd->cmd[0] = SPI_NAND_BLOCK_ERASE;
-+ cmd->cmd[1] = (u8)((page_addr & 0xff0000) >> 16);
-+ cmd->cmd[2] = (u8)((page_addr & 0xff00) >> 8);
-+ cmd->cmd[3] = (u8)(page_addr & 0xff);
-+
-+ dev_dbg(snand->dev, "%s: block 0x%x\n", __func__, page_addr);
-+
-+ return spi_nand_send_command(snand_dev->spi, cmd);
-+}
-+
-+static int spi_nand_gd5f_read_id(struct spi_nand *snand, u8 *buf)
-+{
-+ struct spi_nand_device *snand_dev = snand->priv;
-+ struct spi_nand_device_cmd *cmd = &snand_dev->cmd;
-+
-+ memset(cmd, 0, sizeof(struct spi_nand_device_cmd));
-+ cmd->n_cmd = 1;
-+ cmd->cmd[0] = SPI_NAND_READ_ID;
-+ cmd->n_rx = SPI_NAND_GD5F_READID_LEN;
-+ cmd->rx_buf = buf;
-+
-+ dev_dbg(snand->dev, "%s\n", __func__);
-+
-+ return spi_nand_send_command(snand_dev->spi, cmd);
-+}
-+
-+static void spi_nand_gd5f_ecc_status(unsigned int status,
-+ unsigned int *corrected,
-+ unsigned int *ecc_error)
-+{
-+ unsigned int ecc_status = (status >> SPI_NAND_GD5F_ECC_SHIFT) &
-+ SPI_NAND_GD5F_ECC_MASK;
-+
-+ *ecc_error = (ecc_status == SPI_NAND_GD5F_ECC_UNCORR) ? 1 : 0;
-+ if (*ecc_error == 0)
-+ *corrected = (ecc_status > 1) ? (2 + ecc_status) : 0;
-+}
-+
-+static int spi_nand_device_probe(struct spi_device *spi)
-+{
-+ enum spi_nand_device_variant variant;
-+ struct spi_nand_device *priv;
-+ struct spi_nand *snand;
-+ int ret;
-+
-+ priv = devm_kzalloc(&spi->dev, sizeof(*priv), GFP_KERNEL);
-+ if (!priv)
-+ return -ENOMEM;
-+
-+ snand = &priv->spi_nand;
-+
-+ snand->read_cache = spi_nand_device_read_cache;
-+ snand->load_page = spi_nand_device_load_page;
-+ snand->store_cache = spi_nand_device_store_cache;
-+ snand->write_page = spi_nand_device_write_page;
-+ snand->write_reg = spi_nand_device_write_reg;
-+ snand->read_reg = spi_nand_device_read_reg;
-+ snand->block_erase = spi_nand_device_block_erase;
-+ snand->reset = spi_nand_device_reset;
-+ snand->write_enable = spi_nand_device_write_enable;
-+ snand->write_disable = spi_nand_device_write_disable;
-+ snand->dev = &spi->dev;
-+ snand->priv = priv;
-+
-+ /* This'll mean we won't need to specify any specific compatible string
-+ * for a given device, and instead just support spi-nand.
-+ */
-+ variant = spi_get_device_id(spi)->driver_data;
-+ switch (variant) {
-+ case SPI_NAND_GD5F:
-+ snand->read_id = spi_nand_gd5f_read_id;
-+ snand->get_ecc_status = spi_nand_gd5f_ecc_status;
-+ snand->ooblayout = &spi_nand_gd5f_oob_256_ops;
-+ break;
-+ default:
-+ dev_err(snand->dev, "unknown device\n");
-+ return -ENODEV;
-+ }
-+
-+ spi_set_drvdata(spi, snand);
-+ priv->spi = spi;
-+
-+ ret = spi_nand_register(snand, spi_nand_flash_ids);
-+ if (ret)
-+ return ret;
-+ return 0;
-+}
-+
-+static int spi_nand_device_remove(struct spi_device *spi)
-+{
-+ struct spi_nand *snand = spi_get_drvdata(spi);
-+
-+ spi_nand_unregister(snand);
-+
-+ return 0;
-+}
-+
-+const struct spi_device_id spi_nand_id_table[] = {
-+ { "spi-nand", SPI_NAND_GENERIC },
-+ { "gd5f", SPI_NAND_GD5F },
-+ { },
-+};
-+MODULE_DEVICE_TABLE(spi, spi_nand_id_table);
-+
-+static struct spi_driver spi_nand_device_driver = {
-+ .driver = {
-+ .name = "spi_nand_device",
-+ .owner = THIS_MODULE,
-+ },
-+ .id_table = spi_nand_id_table,
-+ .probe = spi_nand_device_probe,
-+ .remove = spi_nand_device_remove,
-+};
-+module_spi_driver(spi_nand_device_driver);
-+
-+MODULE_AUTHOR("Ezequiel Garcia <ezequiel.garcia@imgtec.com>");
-+MODULE_DESCRIPTION("SPI NAND device support");
-+MODULE_LICENSE("GPL v2");
+++ /dev/null
-From b5f49b448cd3c7ab930f1a53c88f739a86071df8 Mon Sep 17 00:00:00 2001
-From: Ian Pozella <Ian.Pozella@imgtec.com>
-Date: Mon, 20 Feb 2017 10:38:07 +0000
-Subject: MIPS: DTS: img: marduk: add nor partition name
-
-Signed-off-by: Ian Pozella <Ian.Pozella@imgtec.com>
----
- arch/mips/boot/dts/img/pistachio_marduk.dts | 1 +
- 1 file changed, 1 insertion(+)
-
---- a/arch/mips/boot/dts/img/pistachio_marduk.dts
-+++ b/arch/mips/boot/dts/img/pistachio_marduk.dts
-@@ -90,6 +90,7 @@
- compatible = "spansion,s25fl016k", "jedec,spi-nor";
- reg = <0>;
- spi-max-frequency = <50000000>;
-+ linux,mtd-name = "spi-nor";
- };
- };
-
+++ /dev/null
-From c13cfb3a49cf1578bb85f19a7066f262503a39ba Mon Sep 17 00:00:00 2001
-From: Abhimanyu Vishwakarma <Abhimanyu.Vishwakarma@imgtec.com>
-Date: Thu, 24 Nov 2016 19:26:46 +0530
-Subject: MIPS: DTS: img: marduk: add nand device support
-
-Signed-off-by: Abhimanyu Vishwakarma <Abhimanyu.Vishwakarma@imgtec.com>
----
- arch/mips/boot/dts/img/pistachio_marduk.dts | 11 +++++++++++
- 1 file changed, 11 insertions(+)
-
---- a/arch/mips/boot/dts/img/pistachio_marduk.dts
-+++ b/arch/mips/boot/dts/img/pistachio_marduk.dts
-@@ -92,6 +92,17 @@
- spi-max-frequency = <50000000>;
- linux,mtd-name = "spi-nor";
- };
-+ flash@1 {
-+ compatible = "gigadevice,gd5f";
-+ reg = <1>;
-+ spi-max-frequency = <50000000>;
-+ nand-on-flash-bbt;
-+ spi-rx-bus-width = <2>;
-+ spi-tx-bus-width = <4>;
-+ #address-cells = <1>;
-+ #size-cells = <1>;
-+ linux,mtd-name = "spi-nand";
-+ };
- };
-
- &uart0 {
projects / openwrt / staging / adrian.git / commitdiff