[PATCH v2] dmaengine: sh: rz-dmac: Set DMA transfer parameters based on the direction

[Biju Das <biju.das.jz@xxxxxxxxxxxxxx>]

Client drivers configure DMA transfer parameters based on the DMA
transfer direction.

This patch sets corresponding parameters in rz_dmac_config() based
on the DMA transfer direction.

Signed-off-by: Biju Das <biju.das.jz@xxxxxxxxxxxxxx>
Reviewed-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@xxxxxxxxxxxxxx>
---
v1->v2:
 * Updated commit description
---
 drivers/dma/sh/rz-dmac.c | 26 +++++++++++++-------------
 1 file changed, 13 insertions(+), 13 deletions(-)

diff --git a/drivers/dma/sh/rz-dmac.c b/drivers/dma/sh/rz-dmac.c
index ee2872e7d64c..de57ae006879 100644
--- a/drivers/dma/sh/rz-dmac.c
+++ b/drivers/dma/sh/rz-dmac.c
@@ -597,24 +597,24 @@ static int rz_dmac_config(struct dma_chan *chan,
 			  struct dma_slave_config *config)
 {
 	struct rz_dmac_chan *channel = to_rz_dmac_chan(chan);
-	u32 val;
+	u32 val, data_sz;
 
-	channel->src_per_address = config->src_addr;
-	channel->src_word_size = config->src_addr_width;
-	channel->dst_per_address = config->dst_addr;
-	channel->dst_word_size = config->dst_addr_width;
-
-	val = rz_dmac_ds_to_val_mapping(config->dst_addr_width);
-	if (val == CHCFG_DS_INVALID)
-		return -EINVAL;
-
-	channel->chcfg |= CHCFG_FILL_DDS(val);
+	if (config->direction == DMA_DEV_TO_MEM) {
+		channel->src_per_address = config->src_addr;
+		channel->src_word_size = config->src_addr_width;
+		val = rz_dmac_ds_to_val_mapping(config->src_addr_width);
+		data_sz = CHCFG_FILL_SDS(val);
+	} else {
+		channel->dst_per_address = config->dst_addr;
+		channel->dst_word_size = config->dst_addr_width;
+		val = rz_dmac_ds_to_val_mapping(config->dst_addr_width);
+		data_sz = CHCFG_FILL_DDS(val);
+	}
 
-	val = rz_dmac_ds_to_val_mapping(config->src_addr_width);
 	if (val == CHCFG_DS_INVALID)
 		return -EINVAL;
 
-	channel->chcfg |= CHCFG_FILL_SDS(val);
+	channel->chcfg |= data_sz;
 
 	return 0;
 }
-- 
2.25.1