Since flash detection code is more mature to
detect even with 6 bytes id length devices
removed old code and related references.
Cc: Yunhui Cui <yunhui....@nxp.com>
Cc: Simon Glass <s...@chromium.org>
Cc: Bin Meng <bmeng...@gmail.com>
Cc: York Sun <york....@nxp.com>
Cc: Vignesh R <vigne...@ti.com>
Cc: Mugunthan V N <mugunthan...@ti.com>
Cc: Michal Simek <michal.si...@xilinx.com>
Cc: Michael Trimarchi <mich...@amarulasolutions.com>
Cc: Siva Durga Prasad Paladugu <siva...@xilinx.com>
Signed-off-by: Jagan Teki <jt...@openedev.com>
---
drivers/mtd/spi/sf_internal.h | 6 ----
drivers/mtd/spi/spi_flash.c | 78 -------------------------------------------
2 files changed, 84 deletions(-)
diff --git a/drivers/mtd/spi/sf_internal.h b/drivers/mtd/spi/sf_internal.h
index f2ea368..d50fb9a 100644
--- a/drivers/mtd/spi/sf_internal.h
+++ b/drivers/mtd/spi/sf_internal.h
@@ -99,12 +99,6 @@ int sst_write_bp(struct spi_flash *flash, u32 offset, size_t
len,
const void *buf);
#endif
-#ifdef CONFIG_SPI_FLASH_SPANSION
-/* Used for Spansion S25FS-S family flash only. */
-#define CMD_SPANSION_RDAR 0x65 /* Read any device register */
-#define CMD_SPANSION_WRAR 0x71 /* Write any device register */
-#endif
-
#define JEDEC_MFR(info) ((info)->id[0])
#define JEDEC_ID(info) (((info)->id[1]) << 8 | ((info)->id[2]))
#define JEDEC_EXT(info) (((info)->id[3]) << 8 | ((info)->id[4]))
diff --git a/drivers/mtd/spi/spi_flash.c b/drivers/mtd/spi/spi_flash.c
index ba884d7..27b85ba 100644
--- a/drivers/mtd/spi/spi_flash.c
+++ b/drivers/mtd/spi/spi_flash.c
@@ -999,94 +999,16 @@ int spi_flash_decode_fdt(const void *blob, struct
spi_flash *flash)
}
#endif /* CONFIG_IS_ENABLED(OF_CONTROL) */
-#ifdef CONFIG_SPI_FLASH_SPANSION
-static int spansion_s25fss_disable_4KB_erase(struct spi_slave *spi)
-{
- u8 cmd[4];
- u32 offset = 0x800004; /* CR3V register offset */
- u8 cr3v;
- int ret;
-
- cmd[0] = CMD_SPANSION_RDAR;
- cmd[1] = offset >> 16;
- cmd[2] = offset >> 8;
- cmd[3] = offset >> 0;
-
- ret = spi_flash_cmd_read(spi, cmd, 4, &cr3v, 1);
- if (ret)
- return -EIO;
- /* CR3V bit3: 4-KB Erase */
- if (cr3v & 0x8)
- return 0;
-
- cmd[0] = CMD_SPANSION_WRAR;
- cr3v |= 0x8;
- ret = spi_flash_cmd_write(spi, cmd, 4, &cr3v, 1);
- if (ret)
- return -EIO;
-
- cmd[0] = CMD_SPANSION_RDAR;
- ret = spi_flash_cmd_read(spi, cmd, 4, &cr3v, 1);
- if (ret)
- return -EIO;
- if (!(cr3v & 0x8))
- return -EFAULT;
-
- return 0;
-}
-#endif
-
int spi_flash_scan(struct spi_flash *flash)
{
struct spi_slave *spi = flash->spi;
const struct spi_flash_info *info = NULL;
- u16 jedec, ext_jedec;
- u8 idcode[5];
int ret;
info = spi_flash_read_id(flash);
if (IS_ERR_OR_NULL(info))
return -ENOENT;
- jedec = idcode[1] << 8 | idcode[2];
- ext_jedec = idcode[3] << 8 | idcode[4];
-
-#ifdef CONFIG_SPI_FLASH_SPANSION
- /*
- * The S25FS-S family physical sectors may be configured as a
- * hybrid combination of eight 4-kB parameter sectors
- * at the top or bottom of the address space with all
- * but one of the remaining sectors being uniform size.
- * The Parameter Sector Erase commands (20h or 21h) must
- * be used to erase the 4-kB parameter sectors individually.
- * The Sector (uniform sector) Erase commands (D8h or DCh)
- * must be used to erase any of the remaining
- * sectors, including the portion of highest or lowest address
- * sector that is not overlaid by the parameter sectors.
- * The uniform sector erase command has no effect on parameter sectors.
- */
- if ((jedec == 0x0219 || (jedec == 0x0220)) &&
- (ext_jedec & 0xff00) == 0x4d00) {
- int ret;
- u8 id[6];
-
- /* Read the ID codes again, 6 bytes */
- ret = spi_flash_cmd(flash->spi, CMD_READ_ID, id, sizeof(id));
- if (ret)
- return -EIO;
-
- ret = memcmp(id, idcode, 5);
- if (ret)
- return -EIO;
-
- /* 0x81: S25FS-S family 0x80: S25FL-S family */
- if (id[5] == 0x81) {
- ret = spansion_s25fss_disable_4KB_erase(spi);
- if (ret)
- return ret;
- }
- }
-#endif
/* Flash powers up read-only, so clear BP# bits */
if (JEDEC_MFR(info) == SPI_FLASH_CFI_MFR_ATMEL ||
JEDEC_MFR(info) == SPI_FLASH_CFI_MFR_MACRONIX ||
--
2.7.4
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