diff options
| 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/macronix.c | |
| parent | 000044d8bfdc803a1a97e68ba95f289bfe5ad149 (diff) | |
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/macronix.c')
| -rw-r--r-- | drivers/mtd/spi/macronix.c | 48 |
1 files changed, 4 insertions, 44 deletions
diff --git a/drivers/mtd/spi/macronix.c b/drivers/mtd/spi/macronix.c index 76d52841d1..291fd17de9 100644 --- a/drivers/mtd/spi/macronix.c +++ b/drivers/mtd/spi/macronix.c @@ -49,8 +49,6 @@ #define CMD_MX25XX_DP 0xb9 /* Deep Power-down */ #define CMD_MX25XX_RES 0xab /* Release from DP, and Read Signature */ -#define MACRONIX_SR_WIP (1 << 0) /* Write-in-Progress */ - struct macronix_spi_flash_params { u16 idcode; u16 page_size; @@ -114,40 +112,6 @@ static const struct macronix_spi_flash_params macronix_spi_flash_table[] = { }, }; -static int macronix_wait_ready(struct spi_flash *flash, unsigned long timeout) -{ - struct spi_slave *spi = flash->spi; - unsigned long timebase; - int ret; - u8 status; - u8 cmd = CMD_MX25XX_RDSR; - - ret = spi_xfer(spi, 8, &cmd, NULL, SPI_XFER_BEGIN); - if (ret) { - debug("SF: Failed to send command %02x: %d\n", cmd, ret); - return ret; - } - - timebase = get_timer(0); - do { - ret = spi_xfer(spi, 8, NULL, &status, 0); - if (ret) - return -1; - - if ((status & MACRONIX_SR_WIP) == 0) - break; - - } while (get_timer(timebase) < timeout); - - spi_xfer(spi, 0, NULL, NULL, SPI_XFER_END); - - if ((status & MACRONIX_SR_WIP) == 0) - return 0; - - /* Timed out */ - return -1; -} - static int macronix_read_fast(struct spi_flash *flash, u32 offset, size_t len, void *buf) { @@ -216,11 +180,9 @@ static int macronix_write(struct spi_flash *flash, break; } - ret = macronix_wait_ready(flash, SPI_FLASH_PROG_TIMEOUT); - if (ret < 0) { - debug("SF: Macronix page programming timed out\n"); + ret = spi_flash_cmd_wait_ready(flash, SPI_FLASH_PROG_TIMEOUT); + if (ret) break; - } page_addr++; byte_addr = 0; @@ -282,11 +244,9 @@ int macronix_erase(struct spi_flash *flash, u32 offset, size_t len) break; } - ret = macronix_wait_ready(flash, SPI_FLASH_PAGE_ERASE_TIMEOUT); - if (ret < 0) { - debug("SF: Macronix page erase timed out\n"); + ret = spi_flash_cmd_wait_ready(flash, SPI_FLASH_PAGE_ERASE_TIMEOUT); + if (ret) break; - } } debug("SF: Macronix: Successfully erased %u bytes @ 0x%x\n", |