diff options
Diffstat (limited to 'drivers/mtd/spi/spi_flash.c')
| -rw-r--r-- | drivers/mtd/spi/spi_flash.c | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/drivers/mtd/spi/spi_flash.c b/drivers/mtd/spi/spi_flash.c index 4ab4e13b4..00aece929 100644 --- a/drivers/mtd/spi/spi_flash.c +++ b/drivers/mtd/spi/spi_flash.c @@ -242,6 +242,33 @@ int spi_flash_cmd_erase(struct spi_flash *flash, u32 offset, size_t len) return ret; } +int spi_flash_cmd_write_status(struct spi_flash *flash, u8 sr) +{ + u8 cmd; + int ret; + + ret = spi_flash_cmd_write_enable(flash); + if (ret < 0) { + debug("SF: enabling write failed\n"); + return ret; + } + + cmd = CMD_WRITE_STATUS; + ret = spi_flash_cmd_write(flash->spi, &cmd, 1, &sr, 1); + if (ret) { + debug("SF: fail to write status register\n"); + return ret; + } + + ret = spi_flash_cmd_wait_ready(flash, SPI_FLASH_PROG_TIMEOUT); + if (ret < 0) { + debug("SF: write status register timed out\n"); + return ret; + } + + return 0; +} + /* * The following table holds all device probe functions * |