dmaengine: sprd: Define the DMA data width type (d7c33cf8) · Commits · 戴 / test

drivers/dma/sprd-dma.c

+11 −3

Original line number	Diff line number	Diff line
		@@ -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;
		}