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.cui@nxp.com Cc: Simon Glass sjg@chromium.org Cc: Bin Meng bmeng.cn@gmail.com Cc: York Sun york.sun@nxp.com Cc: Vignesh R vigneshr@ti.com Cc: Mugunthan V N mugunthanvnm@ti.com Cc: Michal Simek michal.simek@xilinx.com Cc: Michael Trimarchi michael@amarulasolutions.com Cc: Siva Durga Prasad Paladugu sivadur@xilinx.com Signed-off-by: Jagan Teki jteki@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 ||