diff options
| author |   Andy Shevchenko <andriy.shevchenko@linux.intel.com> | 2015-03-09 16:48:46 +0200 |
|---|---|---|
| committer |   Mark Brown <broonie@kernel.org> | 2015-03-09 18:11:13 +0000 |
| commit | 9f14538ecd1a210eff244a0a2281f6744fe4a59d (patch) | |
| tree | 3fbe4c565d59def0182e970ab19e039d55c66ebf /drivers/spi/spi-dw.h | |
| parent | spi: dw-mid: convert value of dma_width to enum dma_slave_buswidth (diff) | |
| download | linux-dev-9f14538ecd1a210eff244a0a2281f6744fe4a59d.tar.xz linux-dev-9f14538ecd1a210eff244a0a2281f6744fe4a59d.zip | |
spi: dw-mid: split dma_setup() from dma_transfer()
The patch splits DMA preparatory code to dma_setup() callback. The change also
converts transfer_one() to program DMA whenever the transfer is DMA mapped. The
change is a follow up of the converion to use SPI core transfer_one_message().
Since the DMA mapped transfers can be interleaved with PIO ones the DMA related
configuration should respect that.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'drivers/spi/spi-dw.h')
| -rw-r--r-- | drivers/spi/spi-dw.h | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/spi/spi-dw.h b/drivers/spi/spi-dw.h index 855bfdd7b433..7351692494ec 100644 --- a/drivers/spi/spi-dw.h +++ b/drivers/spi/spi-dw.h @@ -91,7 +91,8 @@ struct dw_spi; struct dw_spi_dma_ops { int (*dma_init)(struct dw_spi *dws); void (*dma_exit)(struct dw_spi *dws); - int (*dma_transfer)(struct dw_spi *dws, int cs_change); + int (*dma_setup)(struct dw_spi *dws); + int (*dma_transfer)(struct dw_spi *dws); }; struct dw_spi { @@ -109,7 +110,6 @@ struct dw_spi { u16 num_cs; /* supported slave numbers */ /* Current message transfer state info */ - struct chip_data *prev_chip; size_t len; void *tx; void *tx_end; |