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authorMike Frysinger <vapier@gentoo.org>2011-01-10 02:20:12 -0500
committerWolfgang Denk <wd@denx.de>2011-04-11 21:00:53 +0200
commit6163045bcd276818d9ad6bdd1bf36ddcd60d014b (patch)
tree732ba3dd3b07977e38c773960dfb76c78ee4ab09 /drivers/mtd/spi/atmel.c
parent000044d8bfdc803a1a97e68ba95f289bfe5ad149 (diff)
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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/atmel.c')
-rw-r--r--drivers/mtd/spi/atmel.c31
1 files changed, 2 insertions, 29 deletions
diff --git a/drivers/mtd/spi/atmel.c b/drivers/mtd/spi/atmel.c
index 8d02169..7827b75 100644
--- a/drivers/mtd/spi/atmel.c
+++ b/drivers/mtd/spi/atmel.c
@@ -113,35 +113,8 @@ static const struct atmel_spi_flash_params atmel_spi_flash_table[] = {
static int at45_wait_ready(struct spi_flash *flash, unsigned long timeout)
{
- struct spi_slave *spi = flash->spi;
- unsigned long timebase;
- int ret;
- u8 cmd = CMD_AT45_READ_STATUS;
- u8 status;
-
- timebase = get_timer(0);
-
- ret = spi_xfer(spi, 8, &cmd, NULL, SPI_XFER_BEGIN);
- if (ret)
- return -1;
-
- do {
- ret = spi_xfer(spi, 8, NULL, &status, 0);
- if (ret)
- return -1;
-
- if (status & AT45_STATUS_READY)
- break;
- } while (get_timer(timebase) < timeout);
-
- /* Deactivate CS */
- spi_xfer(spi, 0, NULL, NULL, SPI_XFER_END);
-
- if (status & AT45_STATUS_READY)
- return 0;
-
- /* Timed out */
- return -1;
+ return spi_flash_cmd_poll_bit(flash, timeout,
+ CMD_AT45_READ_STATUS, AT45_STATUS_READY);
}
/*