From: Shawn Lin <shawn.lin@rock-chips.com>
Date: Fri, 22 Jan 2016 11:06:51 +0000 (+0800)
Subject: dmaengine: pl330: add max burst for dmaengine
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=86a8ce7d4103f6680236af6916abf38e12477df8;p=linux-beck.git

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>
---

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) {