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| author | Andy Shevchenko <andriy.shevchenko@linux.intel.com> | 2015-03-09 16:48:45 +0200 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2015-03-09 18:11:13 +0000 |
| commit | e31abce778bc05b94d406e8cbebd9953d12e84b8 (patch) | |
| tree | a91c08786ebba08a6f443a2e731f09311a8aa8c1 /drivers/spi/spi-dw.c | |
| parent | 0365fbd4bbc0b8f3fd3c78c16a8020ea83b3afcf (diff) | |
| download | linux-e31abce778bc05b94d406e8cbebd9953d12e84b8.tar.gz linux-e31abce778bc05b94d406e8cbebd9953d12e84b8.tar.bz2 linux-e31abce778bc05b94d406e8cbebd9953d12e84b8.zip | |
spi: dw-mid: convert value of dma_width to enum dma_slave_buswidth
DMAEngine has a specific type to be used for bus width. This patch converts the
code to use the values of the specific type when configure DMA transfer.
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.c')
| -rw-r--r-- | drivers/spi/spi-dw.c | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/drivers/spi/spi-dw.c b/drivers/spi/spi-dw.c index 950bc50361b3..f3e4092cd8dc 100644 --- a/drivers/spi/spi-dw.c +++ b/drivers/spi/spi-dw.c @@ -315,7 +315,6 @@ static int dw_spi_transfer_one(struct spi_master *master, { struct dw_spi *dws = spi_master_get_devdata(master); struct chip_data *chip = spi_get_ctldata(spi); - u8 bits = 0; u8 imask = 0; u8 cs_change = 0; u16 txlevel = 0; @@ -357,9 +356,14 @@ static int dw_spi_transfer_one(struct spi_master *master, } } if (transfer->bits_per_word) { - bits = transfer->bits_per_word; - dws->n_bytes = dws->dma_width = bits >> 3; - cr0 = (bits - 1) + if (transfer->bits_per_word == 8) { + dws->n_bytes = 1; + dws->dma_width = 1; + } else if (transfer->bits_per_word == 16) { + dws->n_bytes = 2; + dws->dma_width = 2; + } + cr0 = (transfer->bits_per_word - 1) | (chip->type << SPI_FRF_OFFSET) | (spi->mode << SPI_MODE_OFFSET) | (chip->tmode << SPI_TMOD_OFFSET); |