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spi: imx: make some register defines simpler 

The watermark levels in the DMA register are write only, the driver
should never have to read them back from the hardware. Replace the
current _MASK and _OFFSET defines with defines taking the watermark
level directly.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Sascha Hauer 2016-02-24 09:20:31 +01:00 committed by Mark Brown
parent c34de7168c
commit d629c2a005
1 changed files with 6 additions and 9 deletions
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15
drivers/spi/spi-imx.c
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@ -256,12 +256,9 @@ static bool spi_imx_can_dma(struct spi_master *master, struct spi_device *spi,
#define MX51_ECSPI_INT_RREN (1 << 3)
#define MX51_ECSPI_DMA 0x14
#define MX51_ECSPI_DMA_TX_WML_OFFSET 0
#define MX51_ECSPI_DMA_TX_WML_MASK 0x3F
#define MX51_ECSPI_DMA_RX_WML_OFFSET 16
#define MX51_ECSPI_DMA_RX_WML_MASK (0x3F << 16)
#define MX51_ECSPI_DMA_RXT_WML_OFFSET 24
#define MX51_ECSPI_DMA_RXT_WML_MASK (0x3F << 24)
#define MX51_ECSPI_DMA_TX_WML(wml) ((wml) & 0x3f)
#define MX51_ECSPI_DMA_RX_WML(wml) (((wml) & 0x3f) << 16)
#define MX51_ECSPI_DMA_RXT_WML(wml) (((wml) & 0x3f) << 24)
#define MX51_ECSPI_DMA_TEDEN (1 << 7)
#define MX51_ECSPI_DMA_RXDEN (1 << 23)
@ -408,9 +405,9 @@ static int __maybe_unused mx51_ecspi_config(struct spi_imx_data *spi_imx,
* and enable DMA request.
*/
writel(spi_imx->wml << MX51_ECSPI_DMA_RX_WML_OFFSET |
spi_imx->wml << MX51_ECSPI_DMA_TX_WML_OFFSET |
spi_imx->wml << MX51_ECSPI_DMA_RXT_WML_OFFSET |
writel(MX51_ECSPI_DMA_RX_WML(spi_imx->wml) |
MX51_ECSPI_DMA_TX_WML(spi_imx->wml) |
MX51_ECSPI_DMA_RXT_WML(spi_imx->wml) |
MX51_ECSPI_DMA_TEDEN | MX51_ECSPI_DMA_RXDEN |
MX51_ECSPI_DMA_RXTDEN, spi_imx->base + MX51_ECSPI_DMA);