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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/spi_bfin5xx.c | |
| parent | 7d0771970c51e736758525dd71fb82dd036b823a (diff) | |
| download | lwn-e7db06b5d5afcef15c4c3e61c3a7441ed7ad1407.tar.gz lwn-e7db06b5d5afcef15c4c3e61c3a7441ed7ad1407.zip | |
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_bfin5xx.c')
| -rw-r--r-- | drivers/spi/spi_bfin5xx.c | 9 |
1 files changed, 3 insertions, 6 deletions
diff --git a/drivers/spi/spi_bfin5xx.c b/drivers/spi/spi_bfin5xx.c index d54058a903be..73e24ef5a2f9 100644 --- a/drivers/spi/spi_bfin5xx.c +++ b/drivers/spi/spi_bfin5xx.c @@ -1010,12 +1010,6 @@ static int bfin_spi_setup(struct spi_device *spi) struct driver_data *drv_data = spi_master_get_devdata(spi->master); int ret; - /* Abort device setup if requested features are not supported */ - if (spi->mode & ~(SPI_CPOL | SPI_CPHA | SPI_LSB_FIRST)) { - dev_err(&spi->dev, "requested mode not fully supported\n"); - return -EINVAL; - } - if (spi->bits_per_word != 8 && spi->bits_per_word != 16) return -EINVAL; @@ -1283,6 +1277,9 @@ static int __init bfin_spi_probe(struct platform_device *pdev) drv_data->pdev = pdev; drv_data->pin_req = platform_info->pin_req; + /* the spi->mode bits supported by this driver: */ + master->mode_bits = SPI_CPOL | SPI_CPHA | SPI_LSB_FIRST; + master->bus_num = pdev->id; master->num_chipselect = platform_info->num_chipselect; master->cleanup = bfin_spi_cleanup; |