Merge tag 'dma' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull samsung arm-soc dma changes from Arnd Bergmann:
 "Some platforms are not yet converted to use the dmaengine framework,
  including some of the samsung SoCs.  In the meantime, we treat this as
  platform code and merge the patches through the arm-soc tree."

* tag 'dma' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
  ARM: SAMSUNG: Fix compiler warning in dma-ops.c file
  ASoC: follow the updated samsung DMA common operations
  spi/s3c64xx: Add the use of DMA config operation
  ARM: SAMSUNG: Add config() function in DMA common operations

1 files changed, 42 insertions, 34 deletions

diff --git a/arch/arm/plat-samsung/dma-ops.c b/arch/arm/plat-samsung/dma-ops.c
index eb9f4f534006..c38d75489240 100644
--- a/arch/arm/plat-samsung/dma-ops.c
+++ b/arch/arm/plat-samsung/dma-ops.c
@@ -19,72 +19,79 @@
 #include <mach/dma.h>
 
 static unsigned samsung_dmadev_request(enum dma_ch dma_ch,
-				struct samsung_dma_info *info)
+				struct samsung_dma_req *param)
 {
-	struct dma_chan *chan;
 	dma_cap_mask_t mask;
-	struct dma_slave_config slave_config;
 	void *filter_param;
 
 	dma_cap_zero(mask);
-	dma_cap_set(info->cap, mask);
+	dma_cap_set(param->cap, mask);
 
 	/*
 	 * If a dma channel property of a device node from device tree is
 	 * specified, use that as the fliter parameter.
 	 */
-	filter_param = (dma_ch == DMACH_DT_PROP) ? (void *)info->dt_dmach_prop :
-				(void *)dma_ch;
-	chan = dma_request_channel(mask, pl330_filter, filter_param);
+	filter_param = (dma_ch == DMACH_DT_PROP) ?
+		(void *)param->dt_dmach_prop : (void *)dma_ch;
+	return (unsigned)dma_request_channel(mask, pl330_filter, filter_param);
+}
+
+static int samsung_dmadev_release(unsigned ch, void *param)
+{
+	dma_release_channel((struct dma_chan *)ch);
 
-	if (info->direction == DMA_DEV_TO_MEM) {
+	return 0;
+}
+
+static int samsung_dmadev_config(unsigned ch,
+				struct samsung_dma_config *param)
+{
+	struct dma_chan *chan = (struct dma_chan *)ch;
+	struct dma_slave_config slave_config;
+
+	if (param->direction == DMA_DEV_TO_MEM) {
 		memset(&slave_config, 0, sizeof(struct dma_slave_config));
-		slave_config.direction = info->direction;
-		slave_config.src_addr = info->fifo;
-		slave_config.src_addr_width = info->width;
+		slave_config.direction = param->direction;
+		slave_config.src_addr = param->fifo;
+		slave_config.src_addr_width = param->width;
 		slave_config.src_maxburst = 1;
 		dmaengine_slave_config(chan, &slave_config);
-	} else if (info->direction == DMA_MEM_TO_DEV) {
+	} else if (param->direction == DMA_MEM_TO_DEV) {
 		memset(&slave_config, 0, sizeof(struct dma_slave_config));
-		slave_config.direction = info->direction;
-		slave_config.dst_addr = info->fifo;
-		slave_config.dst_addr_width = info->width;
+		slave_config.direction = param->direction;
+		slave_config.dst_addr = param->fifo;
+		slave_config.dst_addr_width = param->width;
 		slave_config.dst_maxburst = 1;
 		dmaengine_slave_config(chan, &slave_config);
+	} else {
+		pr_warn("unsupported direction\n");
+		return -EINVAL;
 	}
 
-	return (unsigned)chan;
-}
-
-static int samsung_dmadev_release(unsigned ch,
-			struct s3c2410_dma_client *client)
-{
-	dma_release_channel((struct dma_chan *)ch);
-
 	return 0;
 }
 
 static int samsung_dmadev_prepare(unsigned ch,
-			struct samsung_dma_prep_info *info)
+			struct samsung_dma_prep *param)
 {
 	struct scatterlist sg;
 	struct dma_chan *chan = (struct dma_chan *)ch;
 	struct dma_async_tx_descriptor *desc;
 
-	switch (info->cap) {
+	switch (param->cap) {
 	case DMA_SLAVE:
 		sg_init_table(&sg, 1);
-		sg_dma_len(&sg) = info->len;
-		sg_set_page(&sg, pfn_to_page(PFN_DOWN(info->buf)),
-			    info->len, offset_in_page(info->buf));
-		sg_dma_address(&sg) = info->buf;
+		sg_dma_len(&sg) = param->len;
+		sg_set_page(&sg, pfn_to_page(PFN_DOWN(param->buf)),
+			    param->len, offset_in_page(param->buf));
+		sg_dma_address(&sg) = param->buf;
 
 		desc = dmaengine_prep_slave_sg(chan,
-			&sg, 1, info->direction, DMA_PREP_INTERRUPT);
+			&sg, 1, param->direction, DMA_PREP_INTERRUPT);
 		break;
 	case DMA_CYCLIC:
-		desc = dmaengine_prep_dma_cyclic(chan,
-			info->buf, info->len, info->period, info->direction);
+		desc = dmaengine_prep_dma_cyclic(chan, param->buf,
+			param->len, param->period, param->direction);
 		break;
 	default:
 		dev_err(&chan->dev->device, "unsupported format\n");
@@ -96,8 +103,8 @@ static int samsung_dmadev_prepare(unsigned ch,
 		return -EFAULT;
 	}
 
-	desc->callback = info->fp;
-	desc->callback_param = info->fp_param;
+	desc->callback = param->fp;
+	desc->callback_param = param->fp_param;
 
 	dmaengine_submit((struct dma_async_tx_descriptor *)desc);
 
@@ -119,6 +126,7 @@ static inline int samsung_dmadev_flush(unsigned ch)
 static struct samsung_dma_ops dmadev_ops = {
 	.request	= samsung_dmadev_request,
 	.release	= samsung_dmadev_release,
+	.config		= samsung_dmadev_config,
 	.prepare	= samsung_dmadev_prepare,
 	.trigger	= samsung_dmadev_trigger,
 	.started	= NULL,