From fcf6ac3aa223a4ce6ae2f19fd1e7c741d65d7165 Mon Sep 17 00:00:00 2001
From: Nicolas Dufresne <nicolas.dufresne@collabora.com>
Date: Wed, 11 Dec 2024 13:40:44 -0500
Subject: [PATCH] media: mtk-vcodec: Don't try to decode 422/444 VP9
This is not supported by the hardware and trying to decode
these leads to LAT timeout errors.
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Signed-off-by: Nicolas Dufresne <nicolas.dufresne@collabora.com>
---
.../mediatek/vcodec/decoder/mtk_vcodec_dec_stateless.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/drivers/media/platform/mediatek/vcodec/decoder/mtk_vcodec_dec_stateless.c b/drivers/media/platform/mediatek/vcodec/decoder/mtk_vcodec_dec_stateless.c
index ebfbad530c21a..8f43bbcbf6175 100644
--- a/drivers/media/platform/mediatek/vcodec/decoder/mtk_vcodec_dec_stateless.c
+++ b/drivers/media/platform/mediatek/vcodec/decoder/mtk_vcodec_dec_stateless.c
@@ -553,6 +553,12 @@ static int mtk_vdec_s_ctrl(struct v4l2_ctrl *ctrl)
mtk_v4l2_vdec_err(ctx, "VP9: bit_depth:%d", frame->bit_depth);
return -EINVAL;
}
+
+ if (!(frame->flags & V4L2_VP9_FRAME_FLAG_X_SUBSAMPLING) ||
+ !(frame->flags & V4L2_VP9_FRAME_FLAG_Y_SUBSAMPLING)) {
+ mtk_v4l2_vdec_err(ctx, "VP9: only 420 subsampling is supported");
+ return -EINVAL;
+ }
break;
case V4L2_CID_STATELESS_AV1_SEQUENCE:
seq = (struct v4l2_ctrl_av1_sequence *)hdr_ctrl->p_new.p;
--
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