From: Baolin Wang <baolin.wang@linaro.org>
Date: Thu, 19 Apr 2018 02:00:47 +0000 (+0800)
Subject: dmaengine: sprd: Define the DMA data width type
X-Git-Tag: Ubuntu-5.2.0-15.16~4236^2~4^2~6
X-Git-Url: https://git.proxmox.com/?a=commitdiff_plain;h=d7c33cf8ff4e01e12ad854c92512bf76b5291928;p=mirror_ubuntu-eoan-kernel.git

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>
---

diff --git a/drivers/dma/sprd-dma.c b/drivers/dma/sprd-dma.c
index dcfa4179bf9e..65ff0a583615 100644
--- a/drivers/dma/sprd-dma.c
+++ b/drivers/dma/sprd-dma.c
@@ -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;
 	}