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Diffstat (limited to 'target/linux/bcm53xx/patches-3.18/003-mtd-spi-nor-from-3.19.patch')
-rw-r--r--target/linux/bcm53xx/patches-3.18/003-mtd-spi-nor-from-3.19.patch662
1 files changed, 662 insertions, 0 deletions
diff --git a/target/linux/bcm53xx/patches-3.18/003-mtd-spi-nor-from-3.19.patch b/target/linux/bcm53xx/patches-3.18/003-mtd-spi-nor-from-3.19.patch
new file mode 100644
index 0000000..281c12b
--- /dev/null
+++ b/target/linux/bcm53xx/patches-3.18/003-mtd-spi-nor-from-3.19.patch
@@ -0,0 +1,662 @@
+--- a/drivers/mtd/spi-nor/spi-nor.c
++++ b/drivers/mtd/spi-nor/spi-nor.c
+@@ -26,7 +26,38 @@
+ /* Define max times to check status register before we give up. */
+ #define MAX_READY_WAIT_JIFFIES (40 * HZ) /* M25P16 specs 40s max chip erase */
+
+-#define JEDEC_MFR(_jedec_id) ((_jedec_id) >> 16)
++#define SPI_NOR_MAX_ID_LEN 6
++
++struct flash_info {
++ /*
++ * This array stores the ID bytes.
++ * The first three bytes are the JEDIC ID.
++ * JEDEC ID zero means "no ID" (mostly older chips).
++ */
++ u8 id[SPI_NOR_MAX_ID_LEN];
++ u8 id_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;
++
++ u16 page_size;
++ u16 addr_width;
++
++ u16 flags;
++#define SECT_4K 0x01 /* SPINOR_OP_BE_4K works uniformly */
++#define SPI_NOR_NO_ERASE 0x02 /* No erase command needed */
++#define SST_WRITE 0x04 /* use SST byte programming */
++#define SPI_NOR_NO_FR 0x08 /* Can't do fastread */
++#define SECT_4K_PMC 0x10 /* SPINOR_OP_BE_4K_PMC works uniformly */
++#define SPI_NOR_DUAL_READ 0x20 /* Flash supports Dual Read */
++#define SPI_NOR_QUAD_READ 0x40 /* Flash supports Quad Read */
++#define USE_FSR 0x80 /* use flag status register */
++};
++
++#define JEDEC_MFR(info) ((info)->id[0])
+
+ static const struct spi_device_id *spi_nor_match_id(const char *name);
+
+@@ -98,7 +129,7 @@ static inline int spi_nor_read_dummy_cyc
+ case SPI_NOR_FAST:
+ case SPI_NOR_DUAL:
+ case SPI_NOR_QUAD:
+- return 1;
++ return 8;
+ case SPI_NOR_NORMAL:
+ return 0;
+ }
+@@ -138,13 +169,14 @@ static inline struct spi_nor *mtd_to_spi
+ }
+
+ /* Enable/disable 4-byte addressing mode. */
+-static inline int set_4byte(struct spi_nor *nor, u32 jedec_id, int enable)
++static inline int set_4byte(struct spi_nor *nor, struct flash_info *info,
++ int enable)
+ {
+ int status;
+ bool need_wren = false;
+ u8 cmd;
+
+- switch (JEDEC_MFR(jedec_id)) {
++ switch (JEDEC_MFR(info)) {
+ case CFI_MFR_ST: /* Micron, actually */
+ /* Some Micron need WREN command; all will accept it */
+ need_wren = true;
+@@ -165,81 +197,74 @@ static inline int set_4byte(struct spi_n
+ return nor->write_reg(nor, SPINOR_OP_BRWR, nor->cmd_buf, 1, 0);
+ }
+ }
+-
+-static int spi_nor_wait_till_ready(struct spi_nor *nor)
++static inline int spi_nor_sr_ready(struct spi_nor *nor)
+ {
+- unsigned long deadline;
+- int sr;
+-
+- deadline = jiffies + MAX_READY_WAIT_JIFFIES;
+-
+- do {
+- cond_resched();
++ int sr = read_sr(nor);
++ if (sr < 0)
++ return sr;
++ else
++ return !(sr & SR_WIP);
++}
+
+- sr = read_sr(nor);
+- if (sr < 0)
+- break;
+- else if (!(sr & SR_WIP))
+- return 0;
+- } while (!time_after_eq(jiffies, deadline));
++static inline int spi_nor_fsr_ready(struct spi_nor *nor)
++{
++ int fsr = read_fsr(nor);
++ if (fsr < 0)
++ return fsr;
++ else
++ return fsr & FSR_READY;
++}
+
+- return -ETIMEDOUT;
++static int spi_nor_ready(struct spi_nor *nor)
++{
++ int sr, fsr;
++ sr = spi_nor_sr_ready(nor);
++ if (sr < 0)
++ return sr;
++ fsr = nor->flags & SNOR_F_USE_FSR ? spi_nor_fsr_ready(nor) : 1;
++ if (fsr < 0)
++ return fsr;
++ return sr && fsr;
+ }
+
+-static int spi_nor_wait_till_fsr_ready(struct spi_nor *nor)
++/*
++ * Service routine to read status register until ready, or timeout occurs.
++ * Returns non-zero if error.
++ */
++static int spi_nor_wait_till_ready(struct spi_nor *nor)
+ {
+ unsigned long deadline;
+- int sr;
+- int fsr;
++ int timeout = 0, ret;
+
+ deadline = jiffies + MAX_READY_WAIT_JIFFIES;
+
+- do {
++ while (!timeout) {
++ if (time_after_eq(jiffies, deadline))
++ timeout = 1;
++
++ ret = spi_nor_ready(nor);
++ if (ret < 0)
++ return ret;
++ if (ret)
++ return 0;
++
+ cond_resched();
++ }
+
+- sr = read_sr(nor);
+- if (sr < 0) {
+- break;
+- } else if (!(sr & SR_WIP)) {
+- fsr = read_fsr(nor);
+- if (fsr < 0)
+- break;
+- if (fsr & FSR_READY)
+- return 0;
+- }
+- } while (!time_after_eq(jiffies, deadline));
++ dev_err(nor->dev, "flash operation timed out\n");
+
+ return -ETIMEDOUT;
+ }
+
+ /*
+- * Service routine to read status register until ready, or timeout occurs.
+- * Returns non-zero if error.
+- */
+-static int wait_till_ready(struct spi_nor *nor)
+-{
+- return nor->wait_till_ready(nor);
+-}
+-
+-/*
+ * Erase the whole flash memory
+ *
+ * Returns 0 if successful, non-zero otherwise.
+ */
+ static int erase_chip(struct spi_nor *nor)
+ {
+- int ret;
+-
+ dev_dbg(nor->dev, " %lldKiB\n", (long long)(nor->mtd->size >> 10));
+
+- /* Wait until finished previous write command. */
+- ret = wait_till_ready(nor);
+- if (ret)
+- return ret;
+-
+- /* Send write enable, then erase commands. */
+- write_enable(nor);
+-
+ return nor->write_reg(nor, SPINOR_OP_CHIP_ERASE, NULL, 0, 0);
+ }
+
+@@ -294,11 +319,17 @@ static int spi_nor_erase(struct mtd_info
+
+ /* whole-chip erase? */
+ if (len == mtd->size) {
++ write_enable(nor);
++
+ if (erase_chip(nor)) {
+ ret = -EIO;
+ goto erase_err;
+ }
+
++ ret = spi_nor_wait_till_ready(nor);
++ if (ret)
++ goto erase_err;
++
+ /* REVISIT in some cases we could speed up erasing large regions
+ * by using SPINOR_OP_SE instead of SPINOR_OP_BE_4K. We may have set up
+ * to use "small sector erase", but that's not always optimal.
+@@ -307,6 +338,8 @@ static int spi_nor_erase(struct mtd_info
+ /* "sector"-at-a-time erase */
+ } else {
+ while (len) {
++ write_enable(nor);
++
+ if (nor->erase(nor, addr)) {
+ ret = -EIO;
+ goto erase_err;
+@@ -314,9 +347,15 @@ static int spi_nor_erase(struct mtd_info
+
+ addr += mtd->erasesize;
+ len -= mtd->erasesize;
++
++ ret = spi_nor_wait_till_ready(nor);
++ if (ret)
++ goto erase_err;
+ }
+ }
+
++ write_disable(nor);
++
+ spi_nor_unlock_and_unprep(nor, SPI_NOR_OPS_ERASE);
+
+ instr->state = MTD_ERASE_DONE;
+@@ -341,11 +380,6 @@ static int spi_nor_lock(struct mtd_info
+ if (ret)
+ return ret;
+
+- /* Wait until finished previous command */
+- ret = wait_till_ready(nor);
+- if (ret)
+- goto err;
+-
+ status_old = read_sr(nor);
+
+ if (offset < mtd->size - (mtd->size / 2))
+@@ -388,11 +422,6 @@ static int spi_nor_unlock(struct mtd_inf
+ if (ret)
+ return ret;
+
+- /* Wait until finished previous command */
+- ret = wait_till_ready(nor);
+- if (ret)
+- goto err;
+-
+ status_old = read_sr(nor);
+
+ if (offset+len > mtd->size - (mtd->size / 64))
+@@ -424,38 +453,34 @@ err:
+ return ret;
+ }
+
+-struct flash_info {
+- /* JEDEC id zero means "no ID" (most older chips); otherwise it has
+- * a high byte of zero plus three data bytes: the manufacturer id,
+- * then a two byte device id.
+- */
+- u32 jedec_id;
+- u16 ext_id;
+-
+- /* 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;
+-
+- u16 page_size;
+- u16 addr_width;
+-
+- u16 flags;
+-#define SECT_4K 0x01 /* SPINOR_OP_BE_4K works uniformly */
+-#define SPI_NOR_NO_ERASE 0x02 /* No erase command needed */
+-#define SST_WRITE 0x04 /* use SST byte programming */
+-#define SPI_NOR_NO_FR 0x08 /* Can't do fastread */
+-#define SECT_4K_PMC 0x10 /* SPINOR_OP_BE_4K_PMC works uniformly */
+-#define SPI_NOR_DUAL_READ 0x20 /* Flash supports Dual Read */
+-#define SPI_NOR_QUAD_READ 0x40 /* Flash supports Quad Read */
+-#define USE_FSR 0x80 /* use flag status register */
+-};
+-
++/* Used when the "_ext_id" is two bytes at most */
+ #define INFO(_jedec_id, _ext_id, _sector_size, _n_sectors, _flags) \
+ ((kernel_ulong_t)&(struct flash_info) { \
+- .jedec_id = (_jedec_id), \
+- .ext_id = (_ext_id), \
++ .id = { \
++ ((_jedec_id) >> 16) & 0xff, \
++ ((_jedec_id) >> 8) & 0xff, \
++ (_jedec_id) & 0xff, \
++ ((_ext_id) >> 8) & 0xff, \
++ (_ext_id) & 0xff, \
++ }, \
++ .id_len = (!(_jedec_id) ? 0 : (3 + ((_ext_id) ? 2 : 0))), \
++ .sector_size = (_sector_size), \
++ .n_sectors = (_n_sectors), \
++ .page_size = 256, \
++ .flags = (_flags), \
++ })
++
++#define INFO6(_jedec_id, _ext_id, _sector_size, _n_sectors, _flags) \
++ ((kernel_ulong_t)&(struct flash_info) { \
++ .id = { \
++ ((_jedec_id) >> 16) & 0xff, \
++ ((_jedec_id) >> 8) & 0xff, \
++ (_jedec_id) & 0xff, \
++ ((_ext_id) >> 16) & 0xff, \
++ ((_ext_id) >> 8) & 0xff, \
++ (_ext_id) & 0xff, \
++ }, \
++ .id_len = 6, \
+ .sector_size = (_sector_size), \
+ .n_sectors = (_n_sectors), \
+ .page_size = 256, \
+@@ -507,6 +532,9 @@ static const struct spi_device_id spi_no
+ { "mr25h256", CAT25_INFO( 32 * 1024, 1, 256, 2, SPI_NOR_NO_ERASE | SPI_NOR_NO_FR) },
+ { "mr25h10", CAT25_INFO(128 * 1024, 1, 256, 3, SPI_NOR_NO_ERASE | SPI_NOR_NO_FR) },
+
++ /* Fujitsu */
++ { "mb85rs1mt", INFO(0x047f27, 0, 128 * 1024, 1, SPI_NOR_NO_ERASE) },
++
+ /* GigaDevice */
+ { "gd25q32", INFO(0xc84016, 0, 64 * 1024, 64, SECT_4K) },
+ { "gd25q64", INFO(0xc84017, 0, 64 * 1024, 128, SECT_4K) },
+@@ -536,6 +564,7 @@ static const struct spi_device_id spi_no
+ { "mx66l1g55g", INFO(0xc2261b, 0, 64 * 1024, 2048, SPI_NOR_QUAD_READ) },
+
+ /* Micron */
++ { "n25q032", INFO(0x20ba16, 0, 64 * 1024, 64, 0) },
+ { "n25q064", INFO(0x20ba17, 0, 64 * 1024, 128, 0) },
+ { "n25q128a11", INFO(0x20bb18, 0, 64 * 1024, 256, 0) },
+ { "n25q128a13", INFO(0x20ba18, 0, 64 * 1024, 256, 0) },
+@@ -560,6 +589,7 @@ static const struct spi_device_id spi_no
+ { "s70fl01gs", INFO(0x010221, 0x4d00, 256 * 1024, 256, 0) },
+ { "s25sl12800", INFO(0x012018, 0x0300, 256 * 1024, 64, 0) },
+ { "s25sl12801", INFO(0x012018, 0x0301, 64 * 1024, 256, 0) },
++ { "s25fl128s", INFO6(0x012018, 0x4d0180, 64 * 1024, 256, SPI_NOR_QUAD_READ) },
+ { "s25fl129p0", INFO(0x012018, 0x4d00, 256 * 1024, 64, 0) },
+ { "s25fl129p1", INFO(0x012018, 0x4d01, 64 * 1024, 256, 0) },
+ { "s25sl004a", INFO(0x010212, 0, 64 * 1024, 8, 0) },
+@@ -582,6 +612,7 @@ static const struct spi_device_id spi_no
+ { "sst25wf010", INFO(0xbf2502, 0, 64 * 1024, 2, SECT_4K | SST_WRITE) },
+ { "sst25wf020", INFO(0xbf2503, 0, 64 * 1024, 4, SECT_4K | SST_WRITE) },
+ { "sst25wf040", INFO(0xbf2504, 0, 64 * 1024, 8, SECT_4K | SST_WRITE) },
++ { "sst25wf080", INFO(0xbf2505, 0, 64 * 1024, 16, SECT_4K | SST_WRITE) },
+
+ /* ST Microelectronics -- newer production may have feature updates */
+ { "m25p05", INFO(0x202010, 0, 32 * 1024, 2, 0) },
+@@ -593,7 +624,6 @@ static const struct spi_device_id spi_no
+ { "m25p32", INFO(0x202016, 0, 64 * 1024, 64, 0) },
+ { "m25p64", INFO(0x202017, 0, 64 * 1024, 128, 0) },
+ { "m25p128", INFO(0x202018, 0, 256 * 1024, 64, 0) },
+- { "n25q032", INFO(0x20ba16, 0, 64 * 1024, 64, 0) },
+
+ { "m25p05-nonjedec", INFO(0, 0, 32 * 1024, 2, 0) },
+ { "m25p10-nonjedec", INFO(0, 0, 32 * 1024, 4, 0) },
+@@ -649,32 +679,24 @@ static const struct spi_device_id spi_no
+ static const struct spi_device_id *spi_nor_read_id(struct spi_nor *nor)
+ {
+ int tmp;
+- u8 id[5];
+- u32 jedec;
+- u16 ext_jedec;
++ u8 id[SPI_NOR_MAX_ID_LEN];
+ struct flash_info *info;
+
+- tmp = nor->read_reg(nor, SPINOR_OP_RDID, id, 5);
++ tmp = nor->read_reg(nor, SPINOR_OP_RDID, id, SPI_NOR_MAX_ID_LEN);
+ if (tmp < 0) {
+ dev_dbg(nor->dev, " error %d reading JEDEC ID\n", tmp);
+ return ERR_PTR(tmp);
+ }
+- jedec = id[0];
+- jedec = jedec << 8;
+- jedec |= id[1];
+- jedec = jedec << 8;
+- jedec |= id[2];
+-
+- ext_jedec = id[3] << 8 | id[4];
+
+ for (tmp = 0; tmp < ARRAY_SIZE(spi_nor_ids) - 1; tmp++) {
+ info = (void *)spi_nor_ids[tmp].driver_data;
+- if (info->jedec_id == jedec) {
+- if (info->ext_id == 0 || info->ext_id == ext_jedec)
++ if (info->id_len) {
++ if (!memcmp(info->id, id, info->id_len))
+ return &spi_nor_ids[tmp];
+ }
+ }
+- dev_err(nor->dev, "unrecognized JEDEC id %06x\n", jedec);
++ dev_err(nor->dev, "unrecognized JEDEC id bytes: %02x, %2x, %2x\n",
++ id[0], id[1], id[2]);
+ return ERR_PTR(-ENODEV);
+ }
+
+@@ -709,11 +731,6 @@ static int sst_write(struct mtd_info *mt
+ if (ret)
+ return ret;
+
+- /* Wait until finished previous write command. */
+- ret = wait_till_ready(nor);
+- if (ret)
+- goto time_out;
+-
+ write_enable(nor);
+
+ nor->sst_write_second = false;
+@@ -725,7 +742,7 @@ static int sst_write(struct mtd_info *mt
+
+ /* write one byte. */
+ nor->write(nor, to, 1, retlen, buf);
+- ret = wait_till_ready(nor);
++ ret = spi_nor_wait_till_ready(nor);
+ if (ret)
+ goto time_out;
+ }
+@@ -737,7 +754,7 @@ static int sst_write(struct mtd_info *mt
+
+ /* write two bytes. */
+ nor->write(nor, to, 2, retlen, buf + actual);
+- ret = wait_till_ready(nor);
++ ret = spi_nor_wait_till_ready(nor);
+ if (ret)
+ goto time_out;
+ to += 2;
+@@ -746,7 +763,7 @@ static int sst_write(struct mtd_info *mt
+ nor->sst_write_second = false;
+
+ write_disable(nor);
+- ret = wait_till_ready(nor);
++ ret = spi_nor_wait_till_ready(nor);
+ if (ret)
+ goto time_out;
+
+@@ -757,7 +774,7 @@ static int sst_write(struct mtd_info *mt
+ nor->program_opcode = SPINOR_OP_BP;
+ nor->write(nor, to, 1, retlen, buf + actual);
+
+- ret = wait_till_ready(nor);
++ ret = spi_nor_wait_till_ready(nor);
+ if (ret)
+ goto time_out;
+ write_disable(nor);
+@@ -785,11 +802,6 @@ static int spi_nor_write(struct mtd_info
+ if (ret)
+ return ret;
+
+- /* Wait until finished previous write command. */
+- ret = wait_till_ready(nor);
+- if (ret)
+- goto write_err;
+-
+ write_enable(nor);
+
+ page_offset = to & (nor->page_size - 1);
+@@ -808,16 +820,20 @@ static int spi_nor_write(struct mtd_info
+ if (page_size > nor->page_size)
+ page_size = nor->page_size;
+
+- wait_till_ready(nor);
++ ret = spi_nor_wait_till_ready(nor);
++ if (ret)
++ goto write_err;
++
+ write_enable(nor);
+
+ nor->write(nor, to + i, page_size, retlen, buf + i);
+ }
+ }
+
++ ret = spi_nor_wait_till_ready(nor);
+ write_err:
+ spi_nor_unlock_and_unprep(nor, SPI_NOR_OPS_WRITE);
+- return 0;
++ return ret;
+ }
+
+ static int macronix_quad_enable(struct spi_nor *nor)
+@@ -830,7 +846,7 @@ static int macronix_quad_enable(struct s
+ nor->cmd_buf[0] = val | SR_QUAD_EN_MX;
+ nor->write_reg(nor, SPINOR_OP_WRSR, nor->cmd_buf, 1, 0);
+
+- if (wait_till_ready(nor))
++ if (spi_nor_wait_till_ready(nor))
+ return 1;
+
+ ret = read_sr(nor);
+@@ -880,11 +896,11 @@ static int spansion_quad_enable(struct s
+ return 0;
+ }
+
+-static int set_quad_mode(struct spi_nor *nor, u32 jedec_id)
++static int set_quad_mode(struct spi_nor *nor, struct flash_info *info)
+ {
+ int status;
+
+- switch (JEDEC_MFR(jedec_id)) {
++ switch (JEDEC_MFR(info)) {
+ case CFI_MFR_MACRONIX:
+ status = macronix_quad_enable(nor);
+ if (status) {
+@@ -910,11 +926,6 @@ static int spi_nor_check(struct spi_nor
+ return -EINVAL;
+ }
+
+- if (!nor->read_id)
+- nor->read_id = spi_nor_read_id;
+- if (!nor->wait_till_ready)
+- nor->wait_till_ready = spi_nor_wait_till_ready;
+-
+ return 0;
+ }
+
+@@ -932,16 +943,24 @@ int spi_nor_scan(struct spi_nor *nor, co
+ if (ret)
+ return ret;
+
+- id = spi_nor_match_id(name);
+- if (!id)
++ /* Try to auto-detect if chip name wasn't specified */
++ if (!name)
++ id = spi_nor_read_id(nor);
++ else
++ id = spi_nor_match_id(name);
++ if (IS_ERR_OR_NULL(id))
+ return -ENOENT;
+
+ info = (void *)id->driver_data;
+
+- if (info->jedec_id) {
++ /*
++ * If caller has specified name of flash model that can normally be
++ * detected using JEDEC, let's verify it.
++ */
++ if (name && info->id_len) {
+ const struct spi_device_id *jid;
+
+- jid = nor->read_id(nor);
++ jid = spi_nor_read_id(nor);
+ if (IS_ERR(jid)) {
+ return PTR_ERR(jid);
+ } else if (jid != id) {
+@@ -966,9 +985,9 @@ int spi_nor_scan(struct spi_nor *nor, co
+ * up with the software protection bits set
+ */
+
+- if (JEDEC_MFR(info->jedec_id) == CFI_MFR_ATMEL ||
+- JEDEC_MFR(info->jedec_id) == CFI_MFR_INTEL ||
+- JEDEC_MFR(info->jedec_id) == CFI_MFR_SST) {
++ if (JEDEC_MFR(info) == CFI_MFR_ATMEL ||
++ JEDEC_MFR(info) == CFI_MFR_INTEL ||
++ JEDEC_MFR(info) == CFI_MFR_SST) {
+ write_enable(nor);
+ write_sr(nor, 0);
+ }
+@@ -983,7 +1002,7 @@ int spi_nor_scan(struct spi_nor *nor, co
+ mtd->_read = spi_nor_read;
+
+ /* nor protection support for STmicro chips */
+- if (JEDEC_MFR(info->jedec_id) == CFI_MFR_ST) {
++ if (JEDEC_MFR(info) == CFI_MFR_ST) {
+ mtd->_lock = spi_nor_lock;
+ mtd->_unlock = spi_nor_unlock;
+ }
+@@ -994,9 +1013,8 @@ int spi_nor_scan(struct spi_nor *nor, co
+ else
+ mtd->_write = spi_nor_write;
+
+- if ((info->flags & USE_FSR) &&
+- nor->wait_till_ready == spi_nor_wait_till_ready)
+- nor->wait_till_ready = spi_nor_wait_till_fsr_ready;
++ if (info->flags & USE_FSR)
++ nor->flags |= SNOR_F_USE_FSR;
+
+ #ifdef CONFIG_MTD_SPI_NOR_USE_4K_SECTORS
+ /* prefer "small sector" erase if possible */
+@@ -1037,7 +1055,7 @@ int spi_nor_scan(struct spi_nor *nor, co
+
+ /* Quad/Dual-read mode takes precedence over fast/normal */
+ if (mode == SPI_NOR_QUAD && info->flags & SPI_NOR_QUAD_READ) {
+- ret = set_quad_mode(nor, info->jedec_id);
++ ret = set_quad_mode(nor, info);
+ if (ret) {
+ dev_err(dev, "quad mode not supported\n");
+ return ret;
+@@ -1073,7 +1091,7 @@ int spi_nor_scan(struct spi_nor *nor, co
+ else if (mtd->size > 0x1000000) {
+ /* enable 4-byte addressing if the device exceeds 16MiB */
+ nor->addr_width = 4;
+- if (JEDEC_MFR(info->jedec_id) == CFI_MFR_AMD) {
++ if (JEDEC_MFR(info) == CFI_MFR_AMD) {
+ /* Dedicated 4-byte command set */
+ switch (nor->flash_read) {
+ case SPI_NOR_QUAD:
+@@ -1094,7 +1112,7 @@ int spi_nor_scan(struct spi_nor *nor, co
+ nor->erase_opcode = SPINOR_OP_SE_4B;
+ mtd->erasesize = info->sector_size;
+ } else
+- set_4byte(nor, info->jedec_id, 1);
++ set_4byte(nor, info, 1);
+ } else {
+ nor->addr_width = 3;
+ }
+--- a/include/linux/mtd/spi-nor.h
++++ b/include/linux/mtd/spi-nor.h
+@@ -116,6 +116,10 @@ enum spi_nor_ops {
+ SPI_NOR_OPS_UNLOCK,
+ };
+
++enum spi_nor_option_flags {
++ SNOR_F_USE_FSR = BIT(0),
++};
++
+ /**
+ * struct spi_nor - Structure for defining a the SPI NOR layer
+ * @mtd: point to a mtd_info structure
+@@ -129,6 +133,7 @@ enum spi_nor_ops {
+ * @program_opcode: the program opcode
+ * @flash_read: the mode of the read
+ * @sst_write_second: used by the SST write operation
++ * @flags: flag options for the current SPI-NOR (SNOR_F_*)
+ * @cfg: used by the read_xfer/write_xfer
+ * @cmd_buf: used by the write_reg
+ * @prepare: [OPTIONAL] do some preparations for the
+@@ -139,9 +144,6 @@ enum spi_nor_ops {
+ * @write_xfer: [OPTIONAL] the writefundamental primitive
+ * @read_reg: [DRIVER-SPECIFIC] read out the register
+ * @write_reg: [DRIVER-SPECIFIC] write data to the register
+- * @read_id: [REPLACEABLE] read out the ID data, and find
+- * the proper spi_device_id
+- * @wait_till_ready: [REPLACEABLE] wait till the NOR becomes ready
+ * @read: [DRIVER-SPECIFIC] read data from the SPI NOR
+ * @write: [DRIVER-SPECIFIC] write data to the SPI NOR
+ * @erase: [DRIVER-SPECIFIC] erase a sector of the SPI NOR
+@@ -160,6 +162,7 @@ struct spi_nor {
+ u8 program_opcode;
+ enum read_mode flash_read;
+ bool sst_write_second;
++ u32 flags;
+ struct spi_nor_xfer_cfg cfg;
+ u8 cmd_buf[SPI_NOR_MAX_CMD_SIZE];
+
+@@ -172,8 +175,6 @@ struct spi_nor {
+ int (*read_reg)(struct spi_nor *nor, u8 opcode, u8 *buf, int len);
+ int (*write_reg)(struct spi_nor *nor, u8 opcode, u8 *buf, int len,
+ int write_enable);
+- const struct spi_device_id *(*read_id)(struct spi_nor *nor);
+- int (*wait_till_ready)(struct spi_nor *nor);
+
+ int (*read)(struct spi_nor *nor, loff_t from,
+ size_t len, size_t *retlen, u_char *read_buf);
generated by cgit v1.2.3 (git 2.25.1) at 2024-06-03 18:28:18 +0000