dmaengine: jz4740: remove dma_slave_config direction usage

dma_slave_config direction was marked as deprecated quite some
time back, remove the usage from this driver so that the field
can be removed
Signed-off-by: Vinod Koul <vkoul@kernel.org>

drivers/dma/dma-jz4740.c

@@ -113,6 +113,7 @@ struct jz4740_dma_desc {
 struct jz4740_dmaengine_chan {
 	struct virt_dma_chan vchan;
 	unsigned int id;
+	struct dma_slave_config config;
 
 	dma_addr_t fifo_addr;
 	unsigned int transfer_shift;
@@ -203,8 +204,9 @@ static enum jz4740_dma_transfer_size jz4740_dma_maxburst(u32 maxburst)
 	return JZ4740_DMA_TRANSFER_SIZE_32BYTE;
 }
 
-static int jz4740_dma_slave_config(struct dma_chan *c,
-				   struct dma_slave_config *config)
+static int jz4740_dma_slave_config_write(struct dma_chan *c,
+				   struct dma_slave_config *config,
+				   enum dma_transfer_direction direction)
 {
 	struct jz4740_dmaengine_chan *chan = to_jz4740_dma_chan(c);
 	struct jz4740_dma_dev *dmadev = jz4740_dma_chan_get_dev(chan);
@@ -214,7 +216,7 @@ static int jz4740_dma_slave_config(struct dma_chan *c,
 	enum jz4740_dma_flags flags;
 	uint32_t cmd;
 
-	switch (config->direction) {
+	switch (direction) {
 	case DMA_MEM_TO_DEV:
 		flags = JZ4740_DMA_SRC_AUTOINC;
 		transfer_size = jz4740_dma_maxburst(config->dst_maxburst);
@@ -265,6 +267,15 @@ static int jz4740_dma_slave_config(struct dma_chan *c,
 	return 0;
 }
 
+static int jz4740_dma_slave_config(struct dma_chan *c,
+				   struct dma_slave_config *config)
+{
+	struct jz4740_dmaengine_chan *chan = to_jz4740_dma_chan(c);
+
+	memcpy(&chan->config, config, sizeof(*config));
+	return 0;
+}
+
 static int jz4740_dma_terminate_all(struct dma_chan *c)
 {
 	struct jz4740_dmaengine_chan *chan = to_jz4740_dma_chan(c);
@@ -407,6 +418,8 @@ static struct dma_async_tx_descriptor *jz4740_dma_prep_slave_sg(
 	desc->direction = direction;
 	desc->cyclic = false;
 
+	jz4740_dma_slave_config_write(c, &chan->config, direction);
+
 	return vchan_tx_prep(&chan->vchan, &desc->vdesc, flags);
 }
 
@@ -438,6 +451,8 @@ static struct dma_async_tx_descriptor *jz4740_dma_prep_dma_cyclic(
 	desc->direction = direction;
 	desc->cyclic = true;
 
+	jz4740_dma_slave_config_write(c, &chan->config, direction);
+
 	return vchan_tx_prep(&chan->vchan, &desc->vdesc, flags);
 }