From 66ecb7cdb03d451ddc87bc026050f5a539877bf1 Mon Sep 17 00:00:00 2001 From: Mike Frysinger Date: Mon, 25 Apr 2011 06:59:53 +0000 Subject: [PATCH] sf: unify write disable commands Every spi flash uses the same write disable command, so unify this in the common code. Signed-off-by: Mike Frysinger Fixed commit message. Signed-off-by: Wolfgang Denk --- drivers/mtd/spi/spi_flash_internal.h | 9 +++++++++ drivers/mtd/spi/sst.c | 2 +- 2 files changed, 10 insertions(+), 1 deletion(-) diff --git a/drivers/mtd/spi/spi_flash_internal.h b/drivers/mtd/spi/spi_flash_internal.h index f80f71771c..91e036a4e7 100644 --- a/drivers/mtd/spi/spi_flash_internal.h +++ b/drivers/mtd/spi/spi_flash_internal.h @@ -20,6 +20,7 @@ #define CMD_READ_ARRAY_LEGACY 0xe8 #define CMD_PAGE_PROGRAM 0x02 +#define CMD_WRITE_DISABLE 0x04 #define CMD_READ_STATUS 0x05 #define CMD_WRITE_ENABLE 0x06 @@ -61,6 +62,14 @@ static inline int spi_flash_cmd_write_enable(struct spi_flash *flash) return spi_flash_cmd(flash->spi, CMD_WRITE_ENABLE, NULL, 0); } +/* + * Disable writing on the SPI flash. + */ +static inline int spi_flash_cmd_write_disable(struct spi_flash *flash) +{ + return spi_flash_cmd(flash->spi, CMD_WRITE_DISABLE, NULL, 0); +} + /* * Same as spi_flash_cmd_read() except it also claims/releases the SPI * bus. Used as common part of the ->read() operation. diff --git a/drivers/mtd/spi/sst.c b/drivers/mtd/spi/sst.c index 6691c1de8d..d1e8a931e6 100644 --- a/drivers/mtd/spi/sst.c +++ b/drivers/mtd/spi/sst.c @@ -105,7 +105,7 @@ sst_enable_writing(struct spi_flash *flash) static int sst_disable_writing(struct spi_flash *flash) { - int ret = spi_flash_cmd(flash->spi, CMD_SST_WRDI, NULL, 0); + int ret = spi_flash_cmd_write_disable(flash); if (ret) debug("SF: Disabling Write failed\n"); return ret; -- 2.39.5