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authorAnton Vorontsov <avorontsov@ru.mvista.com>2007-07-31 00:38:42 -0700
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-07-31 15:39:40 -0700
commit35cc0b975057389548bfe5703d438fe0deb4807e (patch)
tree2299bebed4d2918efdd65f3becd860768e59e6b7
parent32421daaf8236b0fd6e032f6b1dd8086ccae2a46 (diff)
downloadop-kernel-dev-35cc0b975057389548bfe5703d438fe0deb4807e.zip
op-kernel-dev-35cc0b975057389548bfe5703d438fe0deb4807e.tar.gz
spi_mpc83xx: fix QE+LSB mode shifts
spi_mpc83xx should use other shifts when running in QE+LSB mode. Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com> Acked-by: Kumar Gala <galak@kernel.crashing.org> 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>
-rw-r--r--drivers/spi/spi_mpc83xx.c8
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/spi/spi_mpc83xx.c b/drivers/spi/spi_mpc83xx.c
index 18c475d..72812bb 100644
--- a/drivers/spi/spi_mpc83xx.c
+++ b/drivers/spi/spi_mpc83xx.c
@@ -237,6 +237,14 @@ int mpc83xx_spi_setup_transfer(struct spi_device *spi, struct spi_transfer *t)
} else
return -EINVAL;
+ if (mpc83xx_spi->qe_mode && spi->mode & SPI_LSB_FIRST) {
+ mpc83xx_spi->tx_shift = 0;
+ if (bits_per_word <= 8)
+ mpc83xx_spi->rx_shift = 8;
+ else
+ mpc83xx_spi->rx_shift = 0;
+ }
+
/* nsecs = (clock period)/2 */
if (!hz)
hz = spi->max_speed_hz;
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