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| author | Mike Frysinger <vapier@gentoo.org> | 2011-01-10 02:20:12 -0500 |
|---|---|---|
| committer | Wolfgang Denk <wd@denx.de> | 2011-04-11 21:00:53 +0200 |
| commit | 6163045bcd276818d9ad6bdd1bf36ddcd60d014b (patch) | |
| tree | 732ba3dd3b07977e38c773960dfb76c78ee4ab09 /drivers/mtd/spi/spansion.c | |
| parent | 000044d8bfdc803a1a97e68ba95f289bfe5ad149 (diff) | |
| download | olio-uboot-2014.01-6163045bcd276818d9ad6bdd1bf36ddcd60d014b.tar.xz olio-uboot-2014.01-6163045bcd276818d9ad6bdd1bf36ddcd60d014b.zip | |
sf: unify status polling for ready bit
All of the spi flash drivers implement the status register polling for
detecting the device ready state, so unify them all in a new helper
function -- spi_flash_wait_ready.
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Diffstat (limited to 'drivers/mtd/spi/spansion.c')
| -rw-r--r-- | drivers/mtd/spi/spansion.c | 41 |
1 files changed, 4 insertions, 37 deletions
diff --git a/drivers/mtd/spi/spansion.c b/drivers/mtd/spi/spansion.c index c0900f978..d0f03ffaf 100644 --- a/drivers/mtd/spi/spansion.c +++ b/drivers/mtd/spi/spansion.c @@ -54,8 +54,6 @@ #define SPSN_EXT_ID_S25FL128P_64KB 0x0301 #define SPSN_EXT_ID_S25FL032P 0x4d00 -#define SPANSION_SR_WIP (1 << 0) /* Write-in-Progress */ - struct spansion_spi_flash_params { u16 idcode1; u16 idcode2; @@ -135,32 +133,6 @@ static const struct spansion_spi_flash_params spansion_spi_flash_table[] = { }, }; -static int spansion_wait_ready(struct spi_flash *flash, unsigned long timeout) -{ - struct spi_slave *spi = flash->spi; - unsigned long timebase; - int ret; - u8 status; - - timebase = get_timer(0); - do { - ret = spi_flash_cmd(spi, CMD_S25FLXX_RDSR, &status, sizeof(status)); - if (ret) - return -1; - - if ((status & SPANSION_SR_WIP) == 0) - break; - - } while (get_timer(timebase) < timeout); - - - if ((status & SPANSION_SR_WIP) == 0) - return 0; - - /* Timed out */ - return -1; -} - static int spansion_read_fast(struct spi_flash *flash, u32 offset, size_t len, void *buf) { @@ -233,11 +205,9 @@ static int spansion_write(struct spi_flash *flash, break; } - ret = spansion_wait_ready(flash, SPI_FLASH_PROG_TIMEOUT); - if (ret < 0) { - debug("SF: SPANSION page programming timed out\n"); + ret = spi_flash_cmd_wait_ready(flash, SPI_FLASH_PROG_TIMEOUT); + if (ret) break; - } page_addr++; byte_addr = 0; @@ -297,12 +267,9 @@ int spansion_erase(struct spi_flash *flash, u32 offset, size_t len) break; } - /* Up to 2 seconds */ - ret = spansion_wait_ready(flash, SPI_FLASH_PAGE_ERASE_TIMEOUT); - if (ret < 0) { - debug("SF: SPANSION page erase timed out\n"); + ret = spi_flash_cmd_wait_ready(flash, SPI_FLASH_PAGE_ERASE_TIMEOUT); + if (ret) break; - } } debug("SF: SPANSION: Successfully erased %u bytes @ 0x%x\n", |