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Message-Id: <1400757848-18075-11-git-send-email-lee.jones@linaro.org>
Date: Thu, 22 May 2014 12:24:08 +0100
From: Lee Jones <lee.jones@...aro.org>
To: linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Cc: computersforpeace@...il.com, linux-mtd@...ts.infradead.org,
Lee Jones <lee.jones@...aro.org>
Subject: [PATCH 10/10] mtd: st_spi_fsm: General tidy-up
Due to the nature of the port (lots of copy/paste) much of the white-space
is taken up by spaces instead of tab separators. This patch aims to change
that.
Signed-off-by: Lee Jones <lee.jones@...aro.org>
---
drivers/mtd/devices/st_spi_fsm.c | 298 +++++++++++++++++++--------------------
1 file changed, 149 insertions(+), 149 deletions(-)
diff --git a/drivers/mtd/devices/st_spi_fsm.c b/drivers/mtd/devices/st_spi_fsm.c
index 6d535d9..c4cccf9 100644
--- a/drivers/mtd/devices/st_spi_fsm.c
+++ b/drivers/mtd/devices/st_spi_fsm.c
@@ -82,9 +82,9 @@
#define SPI_CFG_CS_SETUPHOLD(x) (((x) & 0xff) << 16)
#define SPI_CFG_DATA_HOLD(x) (((x) & 0xff) << 24)
-#define SPI_CFG_DEFAULT_MIN_CS_HIGH SPI_CFG_MIN_CS_HIGH(0x0AA)
-#define SPI_CFG_DEFAULT_CS_SETUPHOLD SPI_CFG_CS_SETUPHOLD(0xA0)
-#define SPI_CFG_DEFAULT_DATA_HOLD SPI_CFG_DATA_HOLD(0x00)
+#define SPI_CFG_DEFAULT_MIN_CS_HIGH SPI_CFG_MIN_CS_HIGH(0x0AA)
+#define SPI_CFG_DEFAULT_CS_SETUPHOLD SPI_CFG_CS_SETUPHOLD(0xA0)
+#define SPI_CFG_DEFAULT_DATA_HOLD SPI_CFG_DATA_HOLD(0x00)
/*
* Register: SPI_FAST_SEQ_TRANSFER_SIZE
@@ -164,7 +164,7 @@
#define STFSM_OPC_ADD 0x2
#define STFSM_OPC_STA 0x3
#define STFSM_OPC_MODE 0x4
-#define STFSM_OPC_DUMMY 0x5
+#define STFSM_OPC_DUMMY 0x5
#define STFSM_OPC_DATA 0x6
#define STFSM_OPC_WAIT 0x7
#define STFSM_OPC_JUMP 0x8
@@ -197,88 +197,87 @@
#define STFSM_INST_WAIT STFSM_INSTR(STFSM_OPC_WAIT, 0)
#define STFSM_INST_STOP STFSM_INSTR(STFSM_OPC_STOP, 0)
-#define STFSM_DEFAULT_EMI_FREQ 100000000UL /* 100 MHz */
-#define STFSM_DEFAULT_WR_TIME (STFSM_DEFAULT_EMI_FREQ * (15/1000)) /* 15ms */
+#define STFSM_DEFAULT_EMI_FREQ 100000000UL /* 100 MHz */
+#define STFSM_DEFAULT_WR_TIME (STFSM_DEFAULT_EMI_FREQ * (15/1000)) /* 15ms */
-#define STFSM_FLASH_SAFE_FREQ 10000000UL /* 10 MHz */
+#define STFSM_FLASH_SAFE_FREQ 10000000UL /* 10 MHz */
-#define STFSM_MAX_WAIT_SEQ_MS 1000 /* FSM execution time */
+#define STFSM_MAX_WAIT_SEQ_MS 1000 /* FSM execution time */
/* S25FLxxxS commands */
-#define S25FL_CMD_WRITE4_1_1_4 0x34
-#define S25FL_CMD_SE4 0xdc
-#define S25FL_CMD_CLSR 0x30
-#define S25FL_CMD_DYBWR 0xe1
-#define S25FL_CMD_DYBRD 0xe0
-#define S25FL_CMD_WRITE4 0x12 /* Note, opcode clashes with
+#define S25FL_CMD_WRITE4_1_1_4 0x34
+#define S25FL_CMD_SE4 0xdc
+#define S25FL_CMD_CLSR 0x30
+#define S25FL_CMD_DYBWR 0xe1
+#define S25FL_CMD_DYBRD 0xe0
+#define S25FL_CMD_WRITE4 0x12 /* Note, opcode clashes with
* 'SPINOR_OP_WRITE_1_4_4'
* as found on N25Qxxx devices! */
-
/* Status register */
-#define FLASH_STATUS_BUSY 0x01
-#define FLASH_STATUS_WEL 0x02
-#define FLASH_STATUS_BP0 0x04
-#define FLASH_STATUS_BP1 0x08
-#define FLASH_STATUS_BP2 0x10
-#define FLASH_STATUS_SRWP0 0x80
-#define FLASH_STATUS_TIMEOUT 0xff
+#define FLASH_STATUS_BUSY 0x01
+#define FLASH_STATUS_WEL 0x02
+#define FLASH_STATUS_BP0 0x04
+#define FLASH_STATUS_BP1 0x08
+#define FLASH_STATUS_BP2 0x10
+#define FLASH_STATUS_SRWP0 0x80
+#define FLASH_STATUS_TIMEOUT 0xff
/* Maximum READID length */
-#define MAX_READID_LEN 6
-#define MAX_READID_LEN_ALIGNED ALIGN(MAX_READID_LEN, 4)
+#define MAX_READID_LEN 6
+#define MAX_READID_LEN_ALIGNED ALIGN(MAX_READID_LEN, 4)
/* S25FL Error Flags */
-#define S25FL_STATUS_E_ERR 0x20
-#define S25FL_STATUS_P_ERR 0x40
+#define S25FL_STATUS_E_ERR 0x20
+#define S25FL_STATUS_P_ERR 0x40
/* N25Q - READ/WRITE/CLEAR NON/VOLATILE STATUS/CONFIG Registers */
-#define N25Q_CMD_RFSR 0x70
-#define N25Q_CMD_CLFSR 0x50
-#define N25Q_CMD_WRVCR 0x81
-#define N25Q_CMD_RDVCR 0x85
-#define N25Q_CMD_RDVECR 0x65
-#define N25Q_CMD_RDNVCR 0xb5
-#define N25Q_CMD_WRNVCR 0xb1
+#define N25Q_CMD_RFSR 0x70
+#define N25Q_CMD_CLFSR 0x50
+#define N25Q_CMD_WRVCR 0x81
+#define N25Q_CMD_RDVCR 0x85
+#define N25Q_CMD_RDVECR 0x65
+#define N25Q_CMD_RDNVCR 0xb5
+#define N25Q_CMD_WRNVCR 0xb1
/* N25Q Flags Status Register: Error Flags */
-#define N25Q_FLAGS_ERR_ERASE BIT(5)
-#define N25Q_FLAGS_ERR_PROG BIT(4)
-#define N25Q_FLAGS_ERR_VPP BIT(3)
-#define N25Q_FLAGS_ERR_PROT BIT(1)
-#define N25Q_FLAGS_ERROR (N25Q_FLAGS_ERR_ERASE | \
- N25Q_FLAGS_ERR_PROG | \
- N25Q_FLAGS_ERR_VPP | \
- N25Q_FLAGS_ERR_PROT)
-
-#define FLASH_PAGESIZE 256 /* In Bytes */
-#define FLASH_PAGESIZE_32 (FLASH_PAGESIZE / 4) /* In uint32_t */
+#define N25Q_FLAGS_ERR_ERASE BIT(5)
+#define N25Q_FLAGS_ERR_PROG BIT(4)
+#define N25Q_FLAGS_ERR_VPP BIT(3)
+#define N25Q_FLAGS_ERR_PROT BIT(1)
+#define N25Q_FLAGS_ERROR (N25Q_FLAGS_ERR_ERASE | \
+ N25Q_FLAGS_ERR_PROG | \
+ N25Q_FLAGS_ERR_VPP | \
+ N25Q_FLAGS_ERR_PROT)
+
+#define FLASH_PAGESIZE 256 /* In Bytes */
+#define FLASH_PAGESIZE_32 (FLASH_PAGESIZE / 4) /* In uint32_t */
/* Maximum operation times (in ms) */
-#define FLASH_MAX_CHIP_ERASE_MS 500000 /* Chip Erase time */
-#define FLASH_MAX_SEC_ERASE_MS 30000 /* Sector Erase time */
-#define FLASH_MAX_PAGE_WRITE_MS 100 /* Write Page time */
-#define FLASH_MAX_STA_WRITE_MS 4000 /* Write status reg time */
-#define FSM_MAX_WAIT_SEQ_MS 1000 /* FSM execution time */
+#define FLASH_MAX_CHIP_ERASE_MS 500000 /* Chip Erase time */
+#define FLASH_MAX_SEC_ERASE_MS 30000 /* Sector Erase time */
+#define FLASH_MAX_PAGE_WRITE_MS 100 /* Write Page time */
+#define FLASH_MAX_STA_WRITE_MS 4000 /* Write status reg time */
+#define FSM_MAX_WAIT_SEQ_MS 1000 /* FSM execution time */
/*
* Flags to tweak operation of default read/write/erase routines
*/
-#define CFG_READ_TOGGLE_32BIT_ADDR 0x00000001
-#define CFG_WRITE_TOGGLE_32BIT_ADDR 0x00000002
-#define CFG_ERASESEC_TOGGLE_32BIT_ADDR 0x00000008
-#define CFG_S25FL_CHECK_ERROR_FLAGS 0x00000010
-#define CFG_N25Q_CHECK_ERROR_FLAGS 0x00000020
+#define CFG_READ_TOGGLE_32BIT_ADDR 0x00000001
+#define CFG_WRITE_TOGGLE_32BIT_ADDR 0x00000002
+#define CFG_ERASESEC_TOGGLE_32BIT_ADDR 0x00000008
+#define CFG_S25FL_CHECK_ERROR_FLAGS 0x00000010
+#define CFG_N25Q_CHECK_ERROR_FLAGS 0x00000020
struct stfsm_seq {
- uint32_t data_size;
- uint32_t addr1;
- uint32_t addr2;
- uint32_t addr_cfg;
- uint32_t seq_opc[5];
- uint32_t mode;
- uint32_t dummy;
- uint32_t status;
- uint8_t seq[16];
- uint32_t seq_cfg;
+ uint32_t data_size;
+ uint32_t addr1;
+ uint32_t addr2;
+ uint32_t addr_cfg;
+ uint32_t seq_opc[5];
+ uint32_t mode;
+ uint32_t dummy;
+ uint32_t status;
+ uint8_t seq[16];
+ uint32_t seq_cfg;
} __packed __aligned(4);
struct stfsm {
@@ -287,51 +286,52 @@ struct stfsm {
struct resource *region;
struct mtd_info mtd;
struct mutex lock;
- struct flash_info *info;
- struct clk *clk;
-
- uint32_t configuration;
- uint32_t fifo_dir_delay;
- bool booted_from_spi;
- bool reset_signal;
- bool reset_por;
-
- struct stfsm_seq stfsm_seq_read;
- struct stfsm_seq stfsm_seq_write;
- struct stfsm_seq stfsm_seq_en_32bit_addr;
+ struct flash_info *info;
+ struct clk *clk;
+
+ uint32_t configuration;
+ uint32_t fifo_dir_delay;
+ bool booted_from_spi;
+ bool reset_signal;
+ bool reset_por;
+
+ struct stfsm_seq stfsm_seq_read;
+ struct stfsm_seq stfsm_seq_write;
+ struct stfsm_seq stfsm_seq_en_32bit_addr;
};
/* Parameters to configure a READ or WRITE FSM sequence */
struct seq_rw_config {
- uint32_t flags; /* flags to support config */
- uint8_t cmd; /* FLASH command */
- int write; /* Write Sequence */
- uint8_t addr_pads; /* No. of addr pads (MODE & DUMMY) */
- uint8_t data_pads; /* No. of data pads */
- uint8_t mode_data; /* MODE data */
- uint8_t mode_cycles; /* No. of MODE cycles */
- uint8_t dummy_cycles; /* No. of DUMMY cycles */
+ uint32_t flags; /* flags to support config */
+ uint8_t cmd; /* FLASH command */
+ int write; /* Write Sequence */
+ uint8_t addr_pads; /* No. of addr pads */
+ /* (MODE & DUMMY) */
+ uint8_t data_pads; /* No. of data pads */
+ uint8_t mode_data; /* MODE data */
+ uint8_t mode_cycles; /* No. of MODE cycles */
+ uint8_t dummy_cycles; /* No. of DUMMY cycles */
};
/* SPI Flash Device Table */
struct flash_info {
- char *name;
+ char *name;
/* READID data, as returned by 'FLASH_CMD_RDID' (0x9f). */
- u8 readid[MAX_READID_LEN];
- int readid_len;
+ u8 readid[MAX_READID_LEN];
+ int readid_len;
/*
* The size listed here is what works with SPINOR_OP_SE, which isn't
* necessarily called a "sector" by the vendor.
*/
- unsigned sector_size;
- u16 n_sectors;
- u32 flags;
+ unsigned sector_size;
+ u16 n_sectors;
+ u32 flags;
/*
* Note, where FAST_READ is supported, freq_max specifies the
* FAST_READ frequency, not the READ frequency.
*/
- u32 max_freq;
- int (*config)(struct stfsm *);
+ u32 max_freq;
+ int (*config)(struct stfsm *);
};
/* Device with standard 3-byte JEDEC ID */
@@ -385,9 +385,9 @@ static struct flash_info flash_types[] = {
JEDEC_INFO("m25p64", 0x202017, 64 * 1024, 128, M25P_FLAG, 50, NULL),
JEDEC_INFO("m25p128", 0x202018, 256 * 1024, 64, M25P_FLAG, 50, NULL),
-#define M25PX_FLAG (FLASH_FLAG_READ_WRITE | \
- FLASH_FLAG_READ_FAST | \
- FLASH_FLAG_READ_1_1_2 | \
+#define M25PX_FLAG (FLASH_FLAG_READ_WRITE | \
+ FLASH_FLAG_READ_FAST | \
+ FLASH_FLAG_READ_1_1_2 | \
FLASH_FLAG_WRITE_1_1_2)
JEDEC_INFO("m25px32", 0x207116, 64 * 1024, 64, M25PX_FLAG, 75, NULL),
JEDEC_INFO("m25px64", 0x207117, 64 * 1024, 128, M25PX_FLAG, 75, NULL),
@@ -396,12 +396,12 @@ static struct flash_info flash_types[] = {
* - Support for 'FLASH_FLAG_WRITE_1_4_4' is omitted for devices
* where operating frequency must be reduced.
*/
-#define MX25_FLAG (FLASH_FLAG_READ_WRITE | \
- FLASH_FLAG_READ_FAST | \
- FLASH_FLAG_READ_1_1_2 | \
- FLASH_FLAG_READ_1_2_2 | \
- FLASH_FLAG_READ_1_1_4 | \
- FLASH_FLAG_SE_4K | \
+#define MX25_FLAG (FLASH_FLAG_READ_WRITE | \
+ FLASH_FLAG_READ_FAST | \
+ FLASH_FLAG_READ_1_1_2 | \
+ FLASH_FLAG_READ_1_2_2 | \
+ FLASH_FLAG_READ_1_1_4 | \
+ FLASH_FLAG_SE_4K | \
FLASH_FLAG_SE_32K)
JEDEC_INFO("mx25l3255e", 0xc29e16, 64 * 1024, 64,
(MX25_FLAG | FLASH_FLAG_WRITE_1_4_4), 86, stfsm_mx25_config),
@@ -411,34 +411,34 @@ static struct flash_info flash_types[] = {
(MX25_FLAG | FLASH_FLAG_RESET), 70, stfsm_mx25_config),
/* Micron N25Qxxx */
-#define N25Q_FLAG (FLASH_FLAG_READ_WRITE | \
- FLASH_FLAG_READ_FAST | \
- FLASH_FLAG_READ_1_1_2 | \
- FLASH_FLAG_READ_1_2_2 | \
- FLASH_FLAG_READ_1_1_4 | \
- FLASH_FLAG_READ_1_4_4 | \
- FLASH_FLAG_WRITE_1_1_2 | \
- FLASH_FLAG_WRITE_1_2_2 | \
- FLASH_FLAG_WRITE_1_1_4 | \
+#define N25Q_FLAG (FLASH_FLAG_READ_WRITE | \
+ FLASH_FLAG_READ_FAST | \
+ FLASH_FLAG_READ_1_1_2 | \
+ FLASH_FLAG_READ_1_2_2 | \
+ FLASH_FLAG_READ_1_1_4 | \
+ FLASH_FLAG_READ_1_4_4 | \
+ FLASH_FLAG_WRITE_1_1_2 | \
+ FLASH_FLAG_WRITE_1_2_2 | \
+ FLASH_FLAG_WRITE_1_1_4 | \
FLASH_FLAG_WRITE_1_4_4)
JEDEC_INFO("n25q128", 0x20ba18, 64 * 1024, 256,
N25Q_FLAG, 108, stfsm_n25q_config),
/* Micron N25Q256/N25Q512/N25Q00A (32-bit ADDR devices)
- *
- * Versions are available with or without a dedicated RESET# pin
- * (e.g. N25Q512A83GSF40G vs. N25Q512A13GSF40G). To complicate matters,
- * the versions that include a RESET# pin (Feature Set = 8) require a
- * different opcode for the FLASH_CMD_WRITE_1_4_4 command.
- * Unfortunately it is not possible to determine easily at run-time
- * which version is being used. We therefore remove support for
- * FLASH_FLAG_WRITE_1_4_4 (falling back to FLASH_FLAG_WRITE_1_1_4), and
- * defer overall support for RESET# to the board-level platform/Device
- * Tree property "reset-signal".
- */
-#define N25Q_32BIT_ADDR_FLAG ((N25Q_FLAG | \
- FLASH_FLAG_32BIT_ADDR | \
- FLASH_FLAG_RESET) & \
+ *
+ * Versions are available with or without a dedicated RESET# pin
+ * (e.g. N25Q512A83GSF40G vs. N25Q512A13GSF40G). To complicate matters,
+ * the versions that include a RESET# pin (Feature Set = 8) require a
+ * different opcode for the FLASH_CMD_WRITE_1_4_4 command.
+ * Unfortunately it is not possible to determine easily at run-time
+ * which version is being used. We therefore remove support for
+ * FLASH_FLAG_WRITE_1_4_4 (falling back to FLASH_FLAG_WRITE_1_1_4), and
+ * defer overall support for RESET# to the board-level platform/Device
+ * Tree property "reset-signal".
+ */
+#define N25Q_32BIT_ADDR_FLAG ((N25Q_FLAG | \
+ FLASH_FLAG_32BIT_ADDR | \
+ FLASH_FLAG_RESET) & \
~FLASH_FLAG_WRITE_1_4_4)
JEDEC_INFO("n25q256", 0x20ba19, 64 * 1024, 512,
N25Q_32BIT_ADDR_FLAG, 108, stfsm_n25q_config),
@@ -452,12 +452,12 @@ static struct flash_info flash_types[] = {
* - 256KiB and 64KiB sector variants (identified by ext. JEDEC)
* - S25FL128Px devices do not support DUAL or QUAD I/O
*/
-#define S25FLXXXP_FLAG (FLASH_FLAG_READ_WRITE | \
- FLASH_FLAG_READ_1_1_2 | \
- FLASH_FLAG_READ_1_2_2 | \
- FLASH_FLAG_READ_1_1_4 | \
- FLASH_FLAG_READ_1_4_4 | \
- FLASH_FLAG_WRITE_1_1_4 | \
+#define S25FLXXXP_FLAG (FLASH_FLAG_READ_WRITE | \
+ FLASH_FLAG_READ_1_1_2 | \
+ FLASH_FLAG_READ_1_2_2 | \
+ FLASH_FLAG_READ_1_1_4 | \
+ FLASH_FLAG_READ_1_4_4 | \
+ FLASH_FLAG_WRITE_1_1_4 | \
FLASH_FLAG_READ_FAST)
RDID_INFO("s25fl032p", RDID({0x01, 0x02, 0x15, 0x4d, 0x00}), 5,
64 * 1024, 64, S25FLXXXP_FLAG, 80, stfsm_s25fl_config),
@@ -482,8 +482,8 @@ static struct flash_info flash_types[] = {
* may default to locked state on power-on.
* - S25FL127Sx handled as S25FL128Sx
*/
-#define S25FLXXXS_FLAG (S25FLXXXP_FLAG | \
- FLASH_FLAG_RESET | \
+#define S25FLXXXS_FLAG (S25FLXXXP_FLAG | \
+ FLASH_FLAG_RESET | \
FLASH_FLAG_DYB_LOCKING)
RDID_INFO("s25fl128s0", RDID({0x01, 0x20, 0x18, 0x4d, 0x00, 0x80}), 6,
256 * 1024, 64, S25FLXXXS_FLAG, 80, stfsm_s25fl_config),
@@ -494,9 +494,9 @@ static struct flash_info flash_types[] = {
RDID_INFO("s25fl256s1", RDID({0x01, 0x02, 0x19, 0x4d, 0x01, 0x80}), 6,
64 * 1024, 512, S25FLXXXS_FLAG, 80, stfsm_s25fl_config),
-#define W25X_FLAG (FLASH_FLAG_READ_WRITE | \
- FLASH_FLAG_READ_FAST | \
- FLASH_FLAG_READ_1_1_2 | \
+#define W25X_FLAG (FLASH_FLAG_READ_WRITE | \
+ FLASH_FLAG_READ_FAST | \
+ FLASH_FLAG_READ_1_1_2 | \
FLASH_FLAG_WRITE_1_1_2)
JEDEC_INFO("w25x40", 0xef3013, 64 * 1024, 8, W25X_FLAG, 75, NULL),
JEDEC_INFO("w25x80", 0xef3014, 64 * 1024, 16, W25X_FLAG, 75, NULL),
@@ -505,12 +505,12 @@ static struct flash_info flash_types[] = {
JEDEC_INFO("w25x64", 0xef3017, 64 * 1024, 128, W25X_FLAG, 75, NULL),
/* Winbond -- w25q "blocks" are 64K, "sectors" are 4KiB */
-#define W25Q_FLAG (FLASH_FLAG_READ_WRITE | \
- FLASH_FLAG_READ_FAST | \
- FLASH_FLAG_READ_1_1_2 | \
- FLASH_FLAG_READ_1_2_2 | \
- FLASH_FLAG_READ_1_1_4 | \
- FLASH_FLAG_READ_1_4_4 | \
+#define W25Q_FLAG (FLASH_FLAG_READ_WRITE | \
+ FLASH_FLAG_READ_FAST | \
+ FLASH_FLAG_READ_1_1_2 | \
+ FLASH_FLAG_READ_1_2_2 | \
+ FLASH_FLAG_READ_1_1_4 | \
+ FLASH_FLAG_READ_1_4_4 | \
FLASH_FLAG_WRITE_1_1_4)
JEDEC_INFO("w25q80", 0xef4014, 64 * 1024, 16,
W25Q_FLAG, 80, stfsm_w25q_config),
@@ -581,7 +581,7 @@ static struct seq_rw_config n25q_read3_configs[] = {
/* N25Q 4-byte Address READ configurations
* - use special 4-byte address READ commands (reduces overheads, and
- * reduces risk of hitting watchdog reset issues).
+ * reduces risk of hitting watchdog reset issues).
* - 'FAST' variants configured for 8 dummy cycles (see note above.)
*/
static struct seq_rw_config n25q_read4_configs[] = {
@@ -643,7 +643,7 @@ static struct seq_rw_config stfsm_s25fl_read4_configs[] = {
static struct seq_rw_config stfsm_s25fl_write4_configs[] = {
{FLASH_FLAG_WRITE_1_1_4, S25FL_CMD_WRITE4_1_1_4, 1, 1, 4, 0x00, 0, 0},
{FLASH_FLAG_READ_WRITE, S25FL_CMD_WRITE4, 1, 1, 1, 0x00, 0, 0},
- {0x00, 0, 0, 0, 0, 0x00, 0, 0},
+ {0x00, 0, 0, 0, 0, 0x00, 0, 0},
};
/*
@@ -868,12 +868,12 @@ static void stfsm_read_fifo(struct stfsm *fsm, uint32_t *buf, uint32_t size)
* With this in mind, a two stage process is used to the clear the FIFO:
*
* 1. Read any complete 32-bit words from the FIFO, as reported by the
- * SPI_FAST_SEQ_STA register.
+ * SPI_FAST_SEQ_STA register.
*
* 2. Mop up any remaining bytes. At this point, it is not known if there
- * are 0, 1, 2, or 3 bytes in the FIFO. To handle all cases, a dummy FSM
- * sequence is used to load one byte at a time, until a complete 32-bit
- * word is formed; at most, 4 bytes will need to be loaded.
+ * are 0, 1, 2, or 3 bytes in the FIFO. To handle all cases, a dummy FSM
+ * sequence is used to load one byte at a time, until a complete 32-bit
+ * word is formed; at most, 4 bytes will need to be loaded.
*
* [1] It is theoretically possible for the FIFO to contain an arbitrary number
* of bits. However, since there are no known use-cases that leave
@@ -2098,7 +2098,7 @@ static int stfsm_init(struct stfsm *fsm)
return ret;
/* Set timing parameters */
- writel(SPI_CFG_DEVICE_ST |
+ writel(SPI_CFG_DEVICE_ST |
SPI_CFG_DEFAULT_MIN_CS_HIGH |
SPI_CFG_DEFAULT_CS_SETUPHOLD |
SPI_CFG_DEFAULT_DATA_HOLD,
@@ -2317,7 +2317,7 @@ static struct platform_driver stfsm_driver = {
.name = "st-spi-fsm",
.owner = THIS_MODULE,
.of_match_table = stfsm_match,
- .pm = &stfsm_pm_ops,
+ .pm = &stfsm_pm_ops,
},
};
module_platform_driver(stfsm_driver);
--
1.8.3.2
--
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