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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_bfin5xx.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_bfin5xx.c')
-rw-r--r--drivers/spi/spi_bfin5xx.c9
1 files changed, 3 insertions, 6 deletions
diff --git a/drivers/spi/spi_bfin5xx.c b/drivers/spi/spi_bfin5xx.c
index d54058a903b..73e24ef5a2f 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;