diff options
| author | Sascha Hauer <s.hauer@pengutronix.de> | 2016-02-24 08:20:31 (GMT) |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2016-02-26 02:04:14 (GMT) |
| commit | d629c2a0051f27cc17ac9dc36bbeef8174b48aae (patch) | |
| tree | 24560107246a6e6fa8f5e0b2ac9fb9964a4be332 /drivers/spi/spi-imx.c | |
| parent | c34de7168cd201ab757b11bfc7899953948d7753 (diff) | |
| download | linux-d629c2a0051f27cc17ac9dc36bbeef8174b48aae.tar.xz | |
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>
Diffstat (limited to 'drivers/spi/spi-imx.c')
| -rw-r--r-- | drivers/spi/spi-imx.c | 15 |
1 files changed, 6 insertions, 9 deletions
diff --git a/drivers/spi/spi-imx.c b/drivers/spi/spi-imx.c index 287ec0c..96e32d4 100644 --- a/drivers/spi/spi-imx.c +++ b/drivers/spi/spi-imx.c @@ -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); |