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| author | Viresh Kumar <viresh.kumar@st.com> | 2011-03-03 15:47:18 +0530 |
|---|---|---|
| committer | Vinod Koul <vinod.koul@intel.com> | 2011-03-07 01:12:27 +0530 |
| commit | a02274564dd78f7edde3c9ff197ed44f2f8a5a81 (patch) | |
| tree | ffbce0c15b05ea36a1fb2470ad5ab573ba175f98 /drivers/dma | |
| parent | 569432efa7975f5795efb8142134f5a098942381 (diff) | |
| download | kernel_samsung_smdk4412-a02274564dd78f7edde3c9ff197ed44f2f8a5a81.zip kernel_samsung_smdk4412-a02274564dd78f7edde3c9ff197ed44f2f8a5a81.tar.gz kernel_samsung_smdk4412-a02274564dd78f7edde3c9ff197ed44f2f8a5a81.tar.bz2 | |
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>
Diffstat (limited to 'drivers/dma')
| -rw-r--r-- | 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 2b0d5e9..e5d97bf 100644 --- a/drivers/dma/dw_dmac.c +++ b/drivers/dma/dw_dmac.c @@ -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; |