linux-kernel - [PATCH v1] dmaengine: Add support for audio interleaved transfer

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Message-Id: <20240325103731.v1.1.I502ea9c86c8403dc5b1f38abf40be8b6ee13c1dc@changeid>
Date: Mon, 25 Mar 2024 10:37:49 +0800
From: Sugar Zhang <sugar.zhang@...k-chips.com>
To: heiko@...ech.de,
	vkoul@...nel.org
Cc: linux-rockchip@...ts.infradead.org,
	Sugar Zhang <sugar.zhang@...k-chips.com>,
	dmaengine@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH v1] dmaengine: Add support for audio interleaved transfer

This patch add support for interleaved transfer which used
for interleaved audio or 2d video data transfer.

for audio situation, we add 'nump' for number of period frames.

Signed-off-by: Sugar Zhang <sugar.zhang@...k-chips.com>
---

 include/linux/dmaengine.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/include/linux/dmaengine.h b/include/linux/dmaengine.h
index 752dbde..5263cde 100644
--- a/include/linux/dmaengine.h
+++ b/include/linux/dmaengine.h
@@ -144,6 +144,7 @@ struct data_chunk {
  *		Otherwise, destination is filled contiguously (icg ignored).
  *		Ignored if dst_inc is false.
  * @numf: Number of frames in this template.
+ * @nump: Number of period frames in this template.
  * @frame_size: Number of chunks in a frame i.e, size of sgl[].
  * @sgl: Array of {chunk,icg} pairs that make up a frame.
  */
@@ -156,6 +157,7 @@ struct dma_interleaved_template {
 	bool src_sgl;
 	bool dst_sgl;
 	size_t numf;
+	size_t nump;
 	size_t frame_size;
 	struct data_chunk sgl[];
 };
-- 
2.7.4