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spi: dw-mid: convert value of dma_width to enum dma_slave_buswidth

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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>
This commit is contained in:
Andy Shevchenko
2015-03-09 16:48:45 +02:00
committed by Mark Brown
parent 0365fbd4bb
commit e31abce778
2 changed files with 19 additions and 6 deletions
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12
drivers/spi/spi-dw.c
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@@ -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);