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| author | Maxime Ripard <maxime.ripard@free-electrons.com> | 2015-05-07 17:38:07 +0200 |
|---|---|---|
| committer | Vinod Koul <vinod.koul@intel.com> | 2015-05-18 10:58:58 +0530 |
| commit | e1031dc1f7ba5c8724ba211062134076df292791 (patch) | |
| tree | 27048b563a242a4ae22a51ef7c974948869a0834 /include/linux/dmaengine.h | |
| parent | 5ebe6afaf0057ac3eaeb98defd5456894b446d22 (diff) | |
| download | linux-e1031dc1f7ba5c8724ba211062134076df292791.tar.gz linux-e1031dc1f7ba5c8724ba211062134076df292791.tar.xz | |
dmaengine: Support different source and destination stride
In interleaved mode, we can expect to have different source and destination
strides.
Add support for such case to dmaengine.
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Diffstat (limited to 'include/linux/dmaengine.h')
| -rw-r--r-- | include/linux/dmaengine.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/include/linux/dmaengine.h b/include/linux/dmaengine.h index ad419757241f..5d63acb09813 100644 --- a/include/linux/dmaengine.h +++ b/include/linux/dmaengine.h @@ -122,10 +122,18 @@ enum dma_transfer_direction { * chunk and before first src/dst address for next chunk. * Ignored for dst(assumed 0), if dst_inc is true and dst_sgl is false. * Ignored for src(assumed 0), if src_inc is true and src_sgl is false. + * @dst_icg: Number of bytes to jump after last dst address of this + * chunk and before the first dst address for next chunk. + * Ignored if dst_inc is true and dst_sgl is false. + * @src_icg: Number of bytes to jump after last src address of this + * chunk and before the first src address for next chunk. + * Ignored if src_inc is true and src_sgl is false. */ struct data_chunk { size_t size; size_t icg; + size_t dst_icg; + size_t src_icg; }; /** |