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Subject[PATCH 5/8 resend] dw_dmac: adding support for 64 bit access width for memcpy xfers
Date
Signed-off-by: Viresh Kumar <viresh.kumar@st.com>
---
drivers/dma/dw_dmac.c | 4 +++-
1 files changed, 3 insertions(+), 1 deletions(-)
diff --git a/drivers/dma/dw_dmac.c b/drivers/dma/dw_dmac.c
index 5cc5abf..c40b89f 100644
--- a/drivers/dma/dw_dmac.c
+++ b/drivers/dma/dw_dmac.c
@@ -577,7 +577,9 @@ dwc_prep_dma_memcpy(struct dma_chan *chan, dma_addr_t dest, dma_addr_t src,
* We can be a lot more clever here, but this should take care
* of the most common optimization.
*/
- if (!((src | dest | len) & 3))
+ if (!((src | dest | len) & 7))
+ src_width = dst_width = 3;
+ else if (!((src | dest | len) & 3))
src_width = dst_width = 2;
else if (!((src | dest | len) & 1))
src_width = dst_width = 1;
--
1.7.2.2


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