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authorShawn Lin <shawn.lin@rock-chips.com>2016-01-22 14:06:51 +0300
committerVinod Koul <vinod.koul@intel.com>2016-02-09 06:31:41 +0300
commit86a8ce7d4103f6680236af6916abf38e12477df8 (patch)
treed382626964f8478545f87aa8a586a0ce422a3259 /drivers/dma
parent6d5bbed30f89acd2ae0d23b3fff5b13b307525d9 (diff)
downloadlinux-86a8ce7d4103f6680236af6916abf38e12477df8.tar.xz
dmaengine: pl330: add max burst for dmaengine
This patch add max burst capability for dmaengine and limit burst capability to one for PL330_QUIRK_BROKEN_NO_FLUSHP Signed-off-by: Shawn Lin <shawn.lin@rock-chips.com> Signed-off-by: Caesar Wang <wxt@rock-chips.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Diffstat (limited to 'drivers/dma')
-rw-r--r--drivers/dma/pl330.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/dma/pl330.c b/drivers/dma/pl330.c
index 008408db6ae0..1b0453b9e32d 100644
--- a/drivers/dma/pl330.c
+++ b/drivers/dma/pl330.c
@@ -33,6 +33,7 @@
#define PL330_MAX_CHAN 8
#define PL330_MAX_IRQS 32
#define PL330_MAX_PERI 32
+#define PL330_MAX_BURST 16
#define PL330_QUIRK_BROKEN_NO_FLUSHP BIT(0)
@@ -2938,6 +2939,8 @@ pl330_probe(struct amba_device *adev, const struct amba_id *id)
pd->dst_addr_widths = PL330_DMA_BUSWIDTHS;
pd->directions = BIT(DMA_DEV_TO_MEM) | BIT(DMA_MEM_TO_DEV);
pd->residue_granularity = DMA_RESIDUE_GRANULARITY_SEGMENT;
+ pd->max_burst = ((pl330->quirks & PL330_QUIRK_BROKEN_NO_FLUSHP) ?
+ 1 : PL330_MAX_BURST);
ret = dma_async_device_register(pd);
if (ret) {