diff options
| author | David Brownell <dbrownell@users.sourceforge.net> | 2009-06-18 03:26:04 +0400 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2009-06-19 00:03:42 +0400 |
| commit | e7db06b5d5afcef15c4c3e61c3a7441ed7ad1407 (patch) | |
| tree | c0d1e01d49fdb3f288da28ffc3b349810c4e1b61 /drivers/spi/omap_uwire.c | |
| parent | 7d0771970c51e736758525dd71fb82dd036b823a (diff) | |
| download | linux-e7db06b5d5afcef15c4c3e61c3a7441ed7ad1407.tar.xz | |
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/omap_uwire.c')
| -rw-r--r-- | drivers/spi/omap_uwire.c | 12 |
1 files changed, 3 insertions, 9 deletions
diff --git a/drivers/spi/omap_uwire.c b/drivers/spi/omap_uwire.c index 747d29be45d5..aa90ddb37066 100644 --- a/drivers/spi/omap_uwire.c +++ b/drivers/spi/omap_uwire.c @@ -447,19 +447,10 @@ done: return status; } -/* the spi->mode bits understood by this driver: */ -#define MODEBITS (SPI_CPOL | SPI_CPHA | SPI_CS_HIGH) - static int uwire_setup(struct spi_device *spi) { struct uwire_state *ust = spi->controller_state; - if (spi->mode & ~MODEBITS) { - dev_dbg(&spi->dev, "setup: unsupported mode bits %x\n", - spi->mode & ~MODEBITS); - return -EINVAL; - } - if (ust == NULL) { ust = kzalloc(sizeof(*ust), GFP_KERNEL); if (ust == NULL) @@ -520,6 +511,9 @@ static int __init uwire_probe(struct platform_device *pdev) uwire_write_reg(UWIRE_SR3, 1); + /* the spi->mode bits understood by this driver: */ + master->mode_bits = SPI_CPOL | SPI_CPHA | SPI_CS_HIGH; + master->bus_num = 2; /* "official" */ master->num_chipselect = 4; master->setup = uwire_setup; |