linux-kernel - [PATCH v3 3/3] media: mediatek: vcodec: add description for vsi struct

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Message-ID: <20241107074603.31998-4-yunfei.dong@mediatek.com>
Date: Thu, 7 Nov 2024 15:45:57 +0800
From: Yunfei Dong <yunfei.dong@...iatek.com>
To: Nícolas F . R . A . Prado
	<nfraprado@...labora.com>, Sebastian Fricke <sebastian.fricke@...labora.com>,
	Nicolas Dufresne <nicolas.dufresne@...labora.com>, Hans Verkuil
	<hverkuil-cisco@...all.nl>, AngeloGioacchino Del Regno
	<angelogioacchino.delregno@...labora.com>, Benjamin Gaignard
	<benjamin.gaignard@...labora.com>, Nathan Hebert <nhebert@...omium.org>
CC: Hsin-Yi Wang <hsinyi@...omium.org>, Chen-Yu Tsai <wenst@...omium.org>,
	Fritz Koenig <frkoenig@...omium.org>, Daniel Vetter <daniel@...ll.ch>, "Steve
 Cho" <stevecho@...omium.org>, Yunfei Dong <yunfei.dong@...iatek.com>,
	<linux-media@...r.kernel.org>, <devicetree@...r.kernel.org>,
	<linux-kernel@...r.kernel.org>, <linux-arm-kernel@...ts.infradead.org>,
	<linux-mediatek@...ts.infradead.org>,
	<Project_Global_Chrome_Upstream_Group@...iatek.com>
Subject: [PATCH v3 3/3] media: mediatek: vcodec: add description for vsi struct

If the video shared information (vsi) is changed accidentally,
will leading to play h264 bitstream fail if the firmware won't
be changed at the same time. Marking the shared struct with
"shared interface with firmware".

Signed-off-by: Yunfei Dong <yunfei.dong@...iatek.com>
---
 .../mediatek/vcodec/decoder/vdec/vdec_h264_req_multi_if.c    | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/media/platform/mediatek/vcodec/decoder/vdec/vdec_h264_req_multi_if.c b/drivers/media/platform/mediatek/vcodec/decoder/vdec/vdec_h264_req_multi_if.c
index d0aecd9621d9..661ea84b6621 100644
--- a/drivers/media/platform/mediatek/vcodec/decoder/vdec/vdec_h264_req_multi_if.c
+++ b/drivers/media/platform/mediatek/vcodec/decoder/vdec/vdec_h264_req_multi_if.c
@@ -30,6 +30,7 @@ enum vdec_h264_core_dec_err_type {
 
 /**
  * struct vdec_h264_slice_lat_dec_param  - parameters for decode current frame
+ *        (shared interface with firmware)
  *
  * @sps:		h264 sps syntax parameters
  * @pps:		h264 pps syntax parameters
@@ -48,7 +49,7 @@ struct vdec_h264_slice_lat_dec_param {
 };
 
 /**
- * struct vdec_h264_slice_info - decode information
+ * struct vdec_h264_slice_info - decode information (shared interface with firmware)
  *
  * @nal_info:		nal info of current picture
  * @timeout:		Decode timeout: 1 timeout, 0 no timeout
@@ -72,7 +73,7 @@ struct vdec_h264_slice_info {
 
 /**
  * struct vdec_h264_slice_vsi - shared memory for decode information exchange
- *        between SCP and Host.
+ *        between SCP and Host (shared interface with firmware).
  *
  * @wdma_err_addr:		wdma error dma address
  * @wdma_start_addr:		wdma start dma address
-- 
2.46.0