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authorMaxime Ripard <maxime.ripard@free-electrons.com>2015-07-20 10:41:32 +0200
committerVinod Koul <vinod.koul@intel.com>2015-08-05 10:53:52 +0530
commit77a68e56aae141d3e9c740a0ac43362af75d4890 (patch)
tree331c81fe450bb885ec34ccedc4fd57fdc1bc68e5 /drivers/dma/mmp_pdma.c
parent056f6c87028544de934f27caf95aa1545d585767 (diff)
downloadlinux-77a68e56aae141d3e9c740a0ac43362af75d4890.tar.bz2
dmaengine: Add an enum for the dmaengine alignment constraints
Most drivers need to set constraints on the buffer alignment for async tx operations. However, even though it is documented, some drivers either use a defined constant that is not matching what the alignment variable expects (like DMA_BUSWIDTH_* constants) or fill the alignment in bytes instead of power of two. Add a new enum for these alignments that matches what the framework expects, and convert the drivers to it. Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Diffstat (limited to 'drivers/dma/mmp_pdma.c')
-rw-r--r--drivers/dma/mmp_pdma.c3
1 files changed, 1 insertions, 2 deletions
diff --git a/drivers/dma/mmp_pdma.c b/drivers/dma/mmp_pdma.c
index 462a0229a743..e39457f13d4d 100644
--- a/drivers/dma/mmp_pdma.c
+++ b/drivers/dma/mmp_pdma.c
@@ -72,7 +72,6 @@
#define DCMD_WIDTH4 (3 << 14) /* 4 byte width (Word) */
#define DCMD_LENGTH 0x01fff /* length mask (max = 8K - 1) */
-#define PDMA_ALIGNMENT 3
#define PDMA_MAX_DESC_BYTES DCMD_LENGTH
struct mmp_pdma_desc_hw {
@@ -1071,7 +1070,7 @@ static int mmp_pdma_probe(struct platform_device *op)
pdev->device.device_issue_pending = mmp_pdma_issue_pending;
pdev->device.device_config = mmp_pdma_config;
pdev->device.device_terminate_all = mmp_pdma_terminate_all;
- pdev->device.copy_align = PDMA_ALIGNMENT;
+ pdev->device.copy_align = DMAENGINE_ALIGN_8_BYTES;
pdev->device.src_addr_widths = widths;
pdev->device.dst_addr_widths = widths;
pdev->device.directions = BIT(DMA_MEM_TO_DEV) | BIT(DMA_DEV_TO_MEM);