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| author | Anton Vorontsov | 2007-07-31 09:38:42 +0200 |
|---|---|---|
| committer | Linus Torvalds | 2007-08-01 00:39:40 +0200 |
| commit | 35cc0b975057389548bfe5703d438fe0deb4807e (patch) | |
| tree | 2299bebed4d2918efdd65f3becd860768e59e6b7 /drivers/spi | |
| parent | spi_mpc83xx: support for lsb-first transfers (diff) | |
| download | kernel-qcow2-linux-35cc0b975057389548bfe5703d438fe0deb4807e.tar.gz kernel-qcow2-linux-35cc0b975057389548bfe5703d438fe0deb4807e.tar.xz kernel-qcow2-linux-35cc0b975057389548bfe5703d438fe0deb4807e.zip | |
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>
Diffstat (limited to 'drivers/spi')
| -rw-r--r-- | drivers/spi/spi_mpc83xx.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/spi/spi_mpc83xx.c b/drivers/spi/spi_mpc83xx.c index 18c475dd5709..72812bb9b40f 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; |