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Commit 15ee3be7 authored by Andy Shevchenko's avatar Andy Shevchenko Committed by Mark Brown
Browse files

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



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: default avatarAndy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent c3c6e231

drivers/spi/spi-dw-mid.c

+2 −2
Original line number Diff line number Diff line
@@ -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);

	}

drivers/spi/spi-dw.h

+4 −0
Original line number Diff line number Diff line
@@ -74,6 +74,10 @@ 
#define SPI_INT_RXFI			(1 << 4)

#define SPI_INT_MSTI			(1 << 5)



/* Bit fields in DMACR */

#define SPI_DMA_RDMAE			(1 << 0)

#define SPI_DMA_TDMAE			(1 << 1)



/* TX RX interrupt level threshold, max can be 256 */

#define SPI_INT_THRESHOLD		32