dmaengine: k3dma: 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

Tested-by: John Stultz <john.stultz@linaro.org>
Signed-off-by: Vinod Koul <vkoul@kernel.org>

drivers/dma/k3dma.c

@@ -87,10 +87,10 @@ struct k3_dma_chan {
 	struct virt_dma_chan	vc;
 	struct k3_dma_phy	*phy;
 	struct list_head	node;
-	enum dma_transfer_direction dir;
 	dma_addr_t		dev_addr;
 	enum dma_status		status;
 	bool			cyclic;
+	struct dma_slave_config	slave_config;
 };
 
 struct k3_dma_phy {
@@ -118,6 +118,10 @@ struct k3_dma_dev {
 
 #define to_k3_dma(dmadev) container_of(dmadev, struct k3_dma_dev, slave)
 
+static int k3_dma_config_write(struct dma_chan *chan,
+			       enum dma_transfer_direction dir,
+			       struct dma_slave_config *cfg);
+
 static struct k3_dma_chan *to_k3_chan(struct dma_chan *chan)
 {
 	return container_of(chan, struct k3_dma_chan, vc.chan);
@@ -536,6 +540,7 @@ static struct dma_async_tx_descriptor *k3_dma_prep_slave_sg(
 	if (!ds)
 		return NULL;
 	num = 0;
+	k3_dma_config_write(chan, dir, &c->slave_config);
 
 	for_each_sg(sgl, sg, sglen, i) {
 		addr = sg_dma_address(sg);
@@ -596,6 +601,7 @@ k3_dma_prep_dma_cyclic(struct dma_chan *chan, dma_addr_t buf_addr,
 	avail = buf_len;
 	total = avail;
 	num = 0;
+	k3_dma_config_write(chan, dir, &c->slave_config);
 
 	if (period_len < modulo)
 		modulo = period_len;
@@ -636,18 +642,26 @@ static int k3_dma_config(struct dma_chan *chan,
 			 struct dma_slave_config *cfg)
 {
 	struct k3_dma_chan *c = to_k3_chan(chan);
+
+	memcpy(&c->slave_config, cfg, sizeof(*cfg));
+
+	return 0;
+}
+
+static int k3_dma_config_write(struct dma_chan *chan,
+			       enum dma_transfer_direction dir,
+			       struct dma_slave_config *cfg)
+{
+	struct k3_dma_chan *c = to_k3_chan(chan);
 	u32 maxburst = 0, val = 0;
 	enum dma_slave_buswidth width = DMA_SLAVE_BUSWIDTH_UNDEFINED;
 
-	if (cfg == NULL)
-		return -EINVAL;
-	c->dir = cfg->direction;
-	if (c->dir == DMA_DEV_TO_MEM) {
+	if (dir == DMA_DEV_TO_MEM) {
 		c->ccfg = CX_CFG_DSTINCR;
 		c->dev_addr = cfg->src_addr;
 		maxburst = cfg->src_maxburst;
 		width = cfg->src_addr_width;
-	} else if (c->dir == DMA_MEM_TO_DEV) {
+	} else if (dir == DMA_MEM_TO_DEV) {
 		c->ccfg = CX_CFG_SRCINCR;
 		c->dev_addr = cfg->dst_addr;
 		maxburst = cfg->dst_maxburst;