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dmaengine: sprd: Define the DMA data width type 

Define the DMA data width type to make code more readable.

Signed-off-by: Baolin Wang <baolin.wang@linaro.org>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
This commit is contained in:
Baolin Wang 2018-04-19 10:00:47 +08:00 committed by Vinod Koul
parent 6b1d255ecd
commit d7c33cf8ff
1 changed files with 11 additions and 3 deletions
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14
drivers/dma/sprd-dma.c
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@ -176,6 +176,14 @@ enum sprd_dma_int_type {
SPRD_DMA_CFGERR_INT,
};
/* dma data width values */
enum sprd_dma_datawidth {
SPRD_DMA_DATAWIDTH_1_BYTE,
SPRD_DMA_DATAWIDTH_2_BYTES,
SPRD_DMA_DATAWIDTH_4_BYTES,
SPRD_DMA_DATAWIDTH_8_BYTES,
};
/* dma channel hardware configuration */
struct sprd_dma_chn_hw {
u32 pause;
@ -604,15 +612,15 @@ static int sprd_dma_config(struct dma_chan *chan, struct sprd_dma_desc *sdesc,
u32 fix_mode = 0, fix_en = 0;
if (IS_ALIGNED(len, 4)) {
datawidth = 2;
datawidth = SPRD_DMA_DATAWIDTH_4_BYTES;
src_step = SPRD_DMA_WORD_STEP;
des_step = SPRD_DMA_WORD_STEP;
} else if (IS_ALIGNED(len, 2)) {
datawidth = 1;
datawidth = SPRD_DMA_DATAWIDTH_2_BYTES;
src_step = SPRD_DMA_SHORT_STEP;
des_step = SPRD_DMA_SHORT_STEP;
} else {
datawidth = 0;
datawidth = SPRD_DMA_DATAWIDTH_1_BYTE;
src_step = SPRD_DMA_BYTE_STEP;
des_step = SPRD_DMA_BYTE_STEP;
}