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spi: dw-mid: split rx and tx callbacks when DMA

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Currently driver wouldn't work properly if user asked for simplex transfer. The
patch separates DMA rx and tx callbacks and finishes transfer correctly in any
case.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Andy Shevchenko
2014-10-28 18:25:02 +02:00
committed by Mark Brown
parent a5c2db964d
commit 30c8eb52cc
2 changed files with 39 additions and 14 deletions
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2
drivers/spi/spi-dw.h
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@@ -139,7 +139,7 @@ struct dw_spi {
struct scatterlist tx_sgl;
struct dma_chan *rxchan;
struct scatterlist rx_sgl;
int dma_chan_done;
unsigned long dma_chan_busy;
struct device *dma_dev;
dma_addr_t dma_addr; /* phy address of the Data register */
struct dw_spi_dma_ops *dma_ops;