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spi: dw-mid: respect 8 bit mode

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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>
Cc: stable@vger.kernel.org
This commit is contained in:
Andy Shevchenko 2014-09-18 20:08:51 +03:00 committed by Mark Brown
parent 53288fe9bd
commit b41583e729
1 changed files with 2 additions and 2 deletions
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4
drivers/spi/spi-dw-mid.c
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@ -136,7 +136,7 @@ static int mid_spi_dma_transfer(struct dw_spi *dws, int cs_change)
txconf.dst_addr = dws->dma_addr; txconf.dst_addr = dws->dma_addr;
txconf.dst_maxburst = LNW_DMA_MSIZE_16; txconf.dst_maxburst = LNW_DMA_MSIZE_16;
txconf.src_addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES; 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;
txconf.device_fc = false; txconf.device_fc = false;
txchan->device->device_control(txchan, DMA_SLAVE_CONFIG, txchan->device->device_control(txchan, DMA_SLAVE_CONFIG,
@ -159,7 +159,7 @@ static int mid_spi_dma_transfer(struct dw_spi *dws, int cs_change)
rxconf.src_addr = dws->dma_addr; rxconf.src_addr = dws->dma_addr;
rxconf.src_maxburst = LNW_DMA_MSIZE_16; rxconf.src_maxburst = LNW_DMA_MSIZE_16;
rxconf.dst_addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES; 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;
rxconf.device_fc = false; rxconf.device_fc = false;
rxchan->device->device_control(rxchan, DMA_SLAVE_CONFIG, rxchan->device->device_control(rxchan, DMA_SLAVE_CONFIG,