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@xxxxxxxxxxxxxxxxxx>
---
include/linux/dmaengine.h | 8 ++++++++
1 file changed, 8 insertions(+)
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;
};
/**
--
2.4.0
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