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authorImre Deak <imre.deak@solidboot.com>2007-05-23 13:58:20 -0700
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-05-23 20:14:15 -0700
commite5f1b194a9afa3e686986839eb67620e6549e9ad (patch)
tree614bf0abccdeefc7f8e68e42ae5947ba79e89a51 /drivers/spi
parent81fc632355834b7133ec4f3341cfb171bd9edc31 (diff)
omap_uwire: SPI_CPHA mode bugfix
The omap_uwire controller driver handles SPI_CPHA incorrectly; It should mean: CPHA=0 ... sample at leading edge of clock CPHA=1 ... sample at trailing edge of clock This bug has been masked by inverse bugs in layered drivers; and was uncovered by running some of them on non-OMAP hardware. 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')
-rw-r--r--drivers/spi/omap_uwire.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/spi/omap_uwire.c b/drivers/spi/omap_uwire.c
index 96f62b2df30..95183e1df52 100644
--- a/drivers/spi/omap_uwire.c
+++ b/drivers/spi/omap_uwire.c
@@ -358,11 +358,11 @@ static int uwire_setup_transfer(struct spi_device *spi, struct spi_transfer *t)
switch (spi->mode & (SPI_CPOL | SPI_CPHA)) {
case SPI_MODE_0:
case SPI_MODE_3:
- flags |= UWIRE_WRITE_RISING_EDGE | UWIRE_READ_FALLING_EDGE;
+ flags |= UWIRE_WRITE_FALLING_EDGE | UWIRE_READ_RISING_EDGE;
break;
case SPI_MODE_1:
case SPI_MODE_2:
- flags |= UWIRE_WRITE_FALLING_EDGE | UWIRE_READ_RISING_EDGE;
+ flags |= UWIRE_WRITE_RISING_EDGE | UWIRE_READ_FALLING_EDGE;
break;
}