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| author | David Brownell <dbrownell@users.sourceforge.net> | 2009-06-17 16:26:04 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2009-06-18 13:03:42 -0700 |
| commit | e7db06b5d5afcef15c4c3e61c3a7441ed7ad1407 (patch) | |
| tree | c0d1e01d49fdb3f288da28ffc3b349810c4e1b61 /drivers/spi/au1550_spi.c | |
| parent | 7d0771970c51e736758525dd71fb82dd036b823a (diff) | |
| download | kernel_samsung_smdk4412-e7db06b5d5afcef15c4c3e61c3a7441ed7ad1407.zip kernel_samsung_smdk4412-e7db06b5d5afcef15c4c3e61c3a7441ed7ad1407.tar.gz kernel_samsung_smdk4412-e7db06b5d5afcef15c4c3e61c3a7441ed7ad1407.tar.bz2 | |
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/au1550_spi.c')
| -rw-r--r-- | drivers/spi/au1550_spi.c | 12 |
1 files changed, 3 insertions, 9 deletions
diff --git a/drivers/spi/au1550_spi.c b/drivers/spi/au1550_spi.c index 6a407e6..76cbc1a 100644 --- a/drivers/spi/au1550_spi.c +++ b/drivers/spi/au1550_spi.c @@ -284,9 +284,6 @@ static int au1550_spi_setupxfer(struct spi_device *spi, struct spi_transfer *t) return 0; } -/* the spi->mode bits understood by this driver: */ -#define MODEBITS (SPI_CPOL | SPI_CPHA | SPI_CS_HIGH | SPI_LSB_FIRST) - static int au1550_spi_setup(struct spi_device *spi) { struct au1550_spi *hw = spi_master_get_devdata(spi->master); @@ -297,12 +294,6 @@ static int au1550_spi_setup(struct spi_device *spi) return -EINVAL; } - if (spi->mode & ~MODEBITS) { - dev_dbg(&spi->dev, "setup: unsupported mode bits %x\n", - spi->mode & ~MODEBITS); - return -EINVAL; - } - if (spi->max_speed_hz == 0) spi->max_speed_hz = hw->freq_max; if (spi->max_speed_hz > hw->freq_max @@ -779,6 +770,9 @@ static int __init au1550_spi_probe(struct platform_device *pdev) goto err_nomem; } + /* the spi->mode bits understood by this driver: */ + master->mode_bits = SPI_CPOL | SPI_CPHA | SPI_CS_HIGH | SPI_LSB_FIRST; + hw = spi_master_get_devdata(master); hw->master = spi_master_get(master); |