diff options
| author | Andy Shevchenko <andriy.shevchenko@linux.intel.com> | 2014-09-18 20:08:51 +0300 |
|---|---|---|
| committer | Ben Hutchings <ben@decadent.org.uk> | 2014-12-14 16:23:44 +0000 |
| commit | 55bddf3a500591c6d7b8ab26a6d5ceec5a035e5a (patch) | |
| tree | 35e014f11c2c371530910819e4c69bc81c5cc1f3 /drivers/spi | |
| parent | f9149ce369d9aeef39194f2738b8e53ab73df406 (diff) | |
spi: dw-mid: respect 8 bit mode
commit b41583e7299046abdc578c33f25ed83ee95b9b31 upstream.
In case of 8 bit mode and DMA usage we end up with every second byte written as
0. We have to respect bits_per_word settings what this patch actually does.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
[bwh: Backported to 3.2: adjust context]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Diffstat (limited to 'drivers/spi')
| -rw-r--r-- | drivers/spi/spi-dw-mid.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/spi/spi-dw-mid.c b/drivers/spi/spi-dw-mid.c index e743a45ee92c..66026ecf023f 100644 --- a/drivers/spi/spi-dw-mid.c +++ b/drivers/spi/spi-dw-mid.c @@ -135,7 +135,7 @@ static int mid_spi_dma_transfer(struct dw_spi *dws, int cs_change) txconf.dst_addr = dws->dma_addr; txconf.dst_maxburst = LNW_DMA_MSIZE_16; txconf.src_addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES; - txconf.dst_addr_width = DMA_SLAVE_BUSWIDTH_2_BYTES; + txconf.dst_addr_width = dws->dma_width; txchan->device->device_control(txchan, DMA_SLAVE_CONFIG, (unsigned long) &txconf); @@ -157,7 +157,7 @@ static int mid_spi_dma_transfer(struct dw_spi *dws, int cs_change) rxconf.src_addr = dws->dma_addr; rxconf.src_maxburst = LNW_DMA_MSIZE_16; rxconf.dst_addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES; - rxconf.src_addr_width = DMA_SLAVE_BUSWIDTH_2_BYTES; + rxconf.src_addr_width = dws->dma_width; rxchan->device->device_control(rxchan, DMA_SLAVE_CONFIG, (unsigned long) &rxconf); |