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authorDavid Brownell <dbrownell@users.sourceforge.net>2009-06-17 16:26:04 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2009-06-18 13:03:42 -0700
commite7db06b5d5afcef15c4c3e61c3a7441ed7ad1407 (patch)
treec0d1e01d49fdb3f288da28ffc3b349810c4e1b61 /drivers/spi/spi_s3c24xx.c
parent7d0771970c51e736758525dd71fb82dd036b823a (diff)
spi: move more spi_setup() functionality into core
Move some common spi_setup() error checks into the SPI framework from the spi_master controller drivers: - Add a new "mode_bits" field to spi_master - Use that in spi_setup to validate the spi->mode value being requested. Setting this new field is now mandatory for any controller supporting more than vanilla SPI_MODE_0. - Update all spi_master drivers to: * Initialize that field * Remove current spi_setup() checks using that value. This is a net minor code shrink. Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/spi/spi_s3c24xx.c')
-rw-r--r--drivers/spi/spi_s3c24xx.c12
1 files changed, 3 insertions, 9 deletions
diff --git a/drivers/spi/spi_s3c24xx.c b/drivers/spi/spi_s3c24xx.c
index 18a4c7f5438..e0d44af4745 100644
--- a/drivers/spi/spi_s3c24xx.c
+++ b/drivers/spi/spi_s3c24xx.c
@@ -146,19 +146,10 @@ static int s3c24xx_spi_setupxfer(struct spi_device *spi,
return 0;
}
-/* the spi->mode bits understood by this driver: */
-#define MODEBITS (SPI_CPOL | SPI_CPHA | SPI_CS_HIGH)
-
static int s3c24xx_spi_setup(struct spi_device *spi)
{
int ret;
- if (spi->mode & ~MODEBITS) {
- dev_dbg(&spi->dev, "setup: unsupported mode bits %x\n",
- spi->mode & ~MODEBITS);
- return -EINVAL;
- }
-
ret = s3c24xx_spi_setupxfer(spi, NULL);
if (ret < 0) {
dev_err(&spi->dev, "setupxfer returned %d\n", ret);
@@ -283,6 +274,9 @@ static int __init s3c24xx_spi_probe(struct platform_device *pdev)
/* setup the master state. */
+ /* the spi->mode bits understood by this driver: */
+ master->mode_bits = SPI_CPOL | SPI_CPHA | SPI_CS_HIGH;
+
master->num_chipselect = hw->pdata->num_cs;
master->bus_num = pdata->bus_num;