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dw_dmac: Adding support for 64 bit access width for memcpy xfers 

Signed-off-by: Viresh Kumar <viresh.kumar@st.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
This commit is contained in:
Viresh Kumar 2011-03-03 15:47:18 +05:30 committed by Vinod Koul
parent 569432efa7
commit a02274564d
1 changed files with 3 additions and 1 deletions
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4
drivers/dma/dw_dmac.c
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@ -583,7 +583,9 @@ 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;