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spi: dw-mid: change magic numbers to the constants

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Instead of using magic numbers in the code we create a bit map definition of
the DMACR register and use it.

There is no functional change.

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 2014-10-02 16:31:07 +03:00 • committed by Mark Brown
parent c3c6e231d8
commit 15ee3be78b
2 changed files with 6 additions and 2 deletions
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4
drivers/spi/spi-dw-mid.c
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@ -124,9 +124,9 @@ static int mid_spi_dma_transfer(struct dw_spi *dws, int cs_change)
dw_writew(dws, DW_SPI_DMARDLR, 0xf);
dw_writew(dws, DW_SPI_DMATDLR, 0x10);
if (dws->tx_dma)
dma_ctrl |= 0x2;
dma_ctrl |= SPI_DMA_TDMAE;
if (dws->rx_dma)
dma_ctrl |= 0x1;
dma_ctrl |= SPI_DMA_RDMAE;
dw_writew(dws, DW_SPI_DMACR, dma_ctrl);
spi_enable_chip(dws, 1);
}