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Message-ID: <d00d4dc685d76273ea99c9b90897602617c53abb.camel@collabora.com>
Date: Wed, 28 Jan 2026 08:39:52 -0500
From: Nicolas Dufresne <nicolas.dufresne@...labora.com>
To: AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>,
Kyrie Wu (吴晗) <Kyrie.Wu@...iatek.com>,
"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
"linux-mediatek@...ts.infradead.org" <linux-mediatek@...ts.infradead.org>,
George Sun (孙林) <George.Sun@...iatek.com>,
Tiffany Lin (林慧珊)
<tiffany.lin@...iatek.com>, "nhebert@...omium.org" <nhebert@...omium.org>,
"linux-media@...r.kernel.org" <linux-media@...r.kernel.org>,
"devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
"mchehab@...nel.org" <mchehab@...nel.org>, "hverkuil@...all.nl"
<hverkuil@...all.nl>, Yunfei Dong
(董云飞) <Yunfei.Dong@...iatek.com>,
"conor+dt@...nel.org" <conor+dt@...nel.org>, Irui Wang
(王瑞) <Irui.Wang@...iatek.com>,
"robh@...nel.org" <robh@...nel.org>,
"linux-arm-kernel@...ts.infradead.org"
<linux-arm-kernel@...ts.infradead.org>, "matthias.bgg@...il.com"
<matthias.bgg@...il.com>, "krzk+dt@...nel.org" <krzk+dt@...nel.org>,
"arnd@...db.de" <arnd@...db.de>, Andrew-CT Chen
(陳智迪) <Andrew-CT.Chen@...iatek.com>
Cc: "andrzejtp2010@...il.com" <andrzejtp2010@...il.com>,
"neil.armstrong@...aro.org"
<neil.armstrong@...aro.org>, Yilong Zhou
(周易龙)
<Yilong.Zhou@...iatek.com>
Subject: Re: [PATCH v7 05/10] media: mediatek: vcodec: Add Decoder profile &
level Initialization
Hi,
Le mercredi 28 janvier 2026 à 10:53 +0100, AngeloGioacchino Del Regno a écrit :
> Il 28/01/26 08:45, Kyrie Wu (吴晗) ha scritto:
> > On Tue, 2026-01-27 at 13:07 +0100, AngeloGioacchino Del Regno wrote:
> > > Il 27/01/26 03:42, Kyrie Wu ha scritto:
> > > > This commit initializes codec profile & level for VDEC. It sets
> > > > default values for H264, H265, and VP9 codecs across multiple
> > > > chipset configurations.
> > > >
> > >
> > > The previous patch "Refactor decoder profile and level handling" will
> > > break the
> > > driver if this patch is not also applied at the same time.
> > >
> > > The change looks good, but you should squash 05/10 in 04/10, and
> > > assign the params
> > > that you're adding here along with the refactoring, so that you get
> > > one single
> > > patch that, if applied, doesn't break anything as it doesn't depend
> > > on additional
> > > (future, as this is number 5) patch.
> > >
> > > Please squash
> > >
> > > Cheers,
> > > Angelo
> >
> > Dear Angelo,
> >
> > The 04/10 and 05/10 were designed in one patch in v6,
> > but Nicolas thought that refactor patch and configuration
> > were two different changes, should separate them in this
> > comments:
> > https://patchwork.linuxtv.org/project/linux-media/patch/20251202074038.3173-5-kyrie.wu@mediatek.com/
>
> Even though in this case I disagree with Nicolas, I'm the mediatek maintainer,
> not a linux-media maintainer... so... let's go with whatever the media
> maintainers think it's best.
No need to disagree, I was not very clear in my reply indeed. What I want to see
is the added MT8189 configuration in isolation. So when I said two patches, the
first one should reorganize the code for existing platform, without breaking it,
and the second should add MT8189 support. I will have a read at these two patch
to understand what is being done wrong, and can provide further feedback later.
The commit description in v6 was only saying that it was adding a configuration
for MT8189.
Nicolas
>
> >
> > In my mind, refactor profile and level setting and assign
> > former ICs' parameters could merge into same patch. The
> > configuration of MT8189 should split to another one, because
> > it is a new setting.
> >
> > Do you agree with my opinion? I look forward to your further reply.
> >
>
> I agree with your opinion, but if linux-media maintainers want those two
> patches separated as you just did, I will raise my hands, so...
>
> Reviewed-by: AngeloGioacchino Del Regno
> <angelogioacchino.delregno@...labora.com
>
> ...because when the two patches are applied at the same time, there's no
> breakage. But I want to still repeat my stance on this: single patches
> should never depend on subsequent patches to avoid regressions (and I know
> you agree as your previous version was compliant with that stance).
>
> Cheers,
> Angelo
>
> > Thanks.
> >
> > Regards,
> > Kyrie.
> >
> >
> > >
> > > > Signed-off-by: Kyrie Wu <kyrie.wu@...iatek.com>
> > > > ---
> > > > .../vcodec/decoder/mtk_vcodec_dec_stateful.c | 12 +++
> > > > .../vcodec/decoder/mtk_vcodec_dec_stateless.c | 84
> > > > +++++++++++++++++++
> > > > 2 files changed, 96 insertions(+)
> > > >
> > > > diff --git
> > > > a/drivers/media/platform/mediatek/vcodec/decoder/mtk_vcodec_dec_sta
> > > > teful.c
> > > > b/drivers/media/platform/mediatek/vcodec/decoder/mtk_vcodec_dec_sta
> > > > teful.c
> > > > index 8ddb61670dc6..a47906b9d717 100644
> > > > ---
> > > > a/drivers/media/platform/mediatek/vcodec/decoder/mtk_vcodec_dec_sta
> > > > teful.c
> > > > +++
> > > > b/drivers/media/platform/mediatek/vcodec/decoder/mtk_vcodec_dec_sta
> > > > teful.c
> > > > @@ -619,4 +619,16 @@ const struct mtk_vcodec_dec_pdata
> > > > mtk_vdec_8173_pdata = {
> > > > .is_subdev_supported = false,
> > > > .hw_arch = MTK_VDEC_PURE_SINGLE_CORE,
> > > > .chip_name = 8173,
> > > > + .h264_params = {
> > > > + .level = V4L2_MPEG_VIDEO_H264_LEVEL_4_1,
> > > > + .profile = V4L2_MPEG_VIDEO_H264_PROFILE_HIGH,
> > > > + },
> > > > + .h265_params = {
> > > > + .level = V4L2_MPEG_VIDEO_HEVC_LEVEL_4,
> > > > + .profile =
> > > > V4L2_MPEG_VIDEO_HEVC_PROFILE_MAIN_STILL_PICTURE,
> > > > + },
> > > > + .vp9_params = {
> > > > + .level = V4L2_MPEG_VIDEO_VP9_LEVEL_4_0,
> > > > + .profile = V4L2_MPEG_VIDEO_VP9_PROFILE_1,
> > > > + },
> > > > };
> > > > diff --git
> > > > a/drivers/media/platform/mediatek/vcodec/decoder/mtk_vcodec_dec_sta
> > > > teless.c
> > > > b/drivers/media/platform/mediatek/vcodec/decoder/mtk_vcodec_dec_sta
> > > > teless.c
> > > > index a1f419202a24..b571c4ed3f79 100644
> > > > ---
> > > > a/drivers/media/platform/mediatek/vcodec/decoder/mtk_vcodec_dec_sta
> > > > teless.c
> > > > +++
> > > > b/drivers/media/platform/mediatek/vcodec/decoder/mtk_vcodec_dec_sta
> > > > teless.c
> > > > @@ -830,6 +830,18 @@ const struct mtk_vcodec_dec_pdata
> > > > mtk_vdec_8183_pdata = {
> > > > .is_subdev_supported = false,
> > > > .hw_arch = MTK_VDEC_PURE_SINGLE_CORE,
> > > > .chip_name = 8183,
> > > > + .h264_params = {
> > > > + .level = V4L2_MPEG_VIDEO_H264_LEVEL_4_2,
> > > > + .profile = V4L2_MPEG_VIDEO_H264_PROFILE_HIGH,
> > > > + },
> > > > + .h265_params = {
> > > > + .level = V4L2_MPEG_VIDEO_HEVC_LEVEL_4,
> > > > + .profile =
> > > > V4L2_MPEG_VIDEO_HEVC_PROFILE_MAIN_STILL_PICTURE,
> > > > + },
> > > > + .vp9_params = {
> > > > + .level = V4L2_MPEG_VIDEO_VP9_LEVEL_4_0,
> > > > + .profile = V4L2_MPEG_VIDEO_VP9_PROFILE_1,
> > > > + },
> > > > };
> > > >
> > > > /* This platform data is used for one lat and one core
> > > > architecture. */
> > > > @@ -869,24 +881,72 @@ const struct mtk_vcodec_dec_pdata
> > > > mtk_vdec_8188_pdata = {
> > > > MTK_STATELESS_DEC_DATA,
> > > > .hw_arch = MTK_VDEC_LAT_SINGLE_CORE,
> > > > .chip_name = 8188,
> > > > + .h264_params = {
> > > > + .level = V4L2_MPEG_VIDEO_H264_LEVEL_5_2,
> > > > + .profile = V4L2_MPEG_VIDEO_H264_PROFILE_HIGH_10,
> > > > + },
> > > > + .h265_params = {
> > > > + .level = V4L2_MPEG_VIDEO_HEVC_LEVEL_5_1,
> > > > + .profile = V4L2_MPEG_VIDEO_HEVC_PROFILE_MAIN_10,
> > > > + },
> > > > + .vp9_params = {
> > > > + .level = V4L2_MPEG_VIDEO_VP9_LEVEL_5_1,
> > > > + .profile = V4L2_MPEG_VIDEO_VP9_PROFILE_2,
> > > > + },
> > > > };
> > > >
> > > > const struct mtk_vcodec_dec_pdata mtk_vdec_8192_pdata = {
> > > > MTK_STATELESS_DEC_DATA,
> > > > .hw_arch = MTK_VDEC_LAT_SINGLE_CORE,
> > > > .chip_name = 8192,
> > > > + .h264_params = {
> > > > + .level = V4L2_MPEG_VIDEO_H264_LEVEL_5_2,
> > > > + .profile = V4L2_MPEG_VIDEO_H264_PROFILE_HIGH,
> > > > + },
> > > > + .h265_params = {
> > > > + .level = V4L2_MPEG_VIDEO_HEVC_LEVEL_4,
> > > > + .profile =
> > > > V4L2_MPEG_VIDEO_HEVC_PROFILE_MAIN_STILL_PICTURE,
> > > > + },
> > > > + .vp9_params = {
> > > > + .level = V4L2_MPEG_VIDEO_VP9_LEVEL_5_1,
> > > > + .profile = V4L2_MPEG_VIDEO_VP9_PROFILE_1,
> > > > + },
> > > > };
> > > >
> > > > const struct mtk_vcodec_dec_pdata mtk_vdec_8195_pdata = {
> > > > MTK_STATELESS_DEC_DATA,
> > > > .hw_arch = MTK_VDEC_LAT_SINGLE_CORE,
> > > > .chip_name = 8195,
> > > > + .h264_params = {
> > > > + .level = V4L2_MPEG_VIDEO_H264_LEVEL_6_0,
> > > > + .profile = V4L2_MPEG_VIDEO_H264_PROFILE_HIGH_10,
> > > > + },
> > > > + .h265_params = {
> > > > + .level = V4L2_MPEG_VIDEO_HEVC_LEVEL_5_2,
> > > > + .profile = V4L2_MPEG_VIDEO_HEVC_PROFILE_MAIN_10,
> > > > + },
> > > > + .vp9_params = {
> > > > + .level = V4L2_MPEG_VIDEO_VP9_LEVEL_5_2,
> > > > + .profile = V4L2_MPEG_VIDEO_VP9_PROFILE_2,
> > > > + },
> > > > };
> > > >
> > > > const struct mtk_vcodec_dec_pdata mtk_vdec_8196_pdata = {
> > > > MTK_STATELESS_DEC_DATA,
> > > > .hw_arch = MTK_VDEC_LAT_SINGLE_CORE,
> > > > .chip_name = 8196,
> > > > + .h264_params = {
> > > > + .level = V4L2_MPEG_VIDEO_H264_LEVEL_6_0,
> > > > + .profile = V4L2_MPEG_VIDEO_H264_PROFILE_HIGH_10,
> > > > + },
> > > > + .h265_params = {
> > > > + .level = V4L2_MPEG_VIDEO_HEVC_LEVEL_5_2,
> > > > + .profile = V4L2_MPEG_VIDEO_HEVC_PROFILE_MAIN_10,
> > > > + },
> > > > + .vp9_params = {
> > > > + .level = V4L2_MPEG_VIDEO_VP9_LEVEL_5_2,
> > > > + .profile = V4L2_MPEG_VIDEO_VP9_PROFILE_2,
> > > > + },
> > > > };
> > > >
> > > > const struct mtk_vcodec_dec_pdata mtk_vdec_single_core_pdata = {
> > > > @@ -910,6 +970,18 @@ const struct mtk_vcodec_dec_pdata
> > > > mtk_vdec_8186_pdata = {
> > > > MTK_STATELESS_DEC_DATA,
> > > > .hw_arch = MTK_VDEC_PURE_SINGLE_CORE,
> > > > .chip_name = 8186,
> > > > + .h264_params = {
> > > > + .level = V4L2_MPEG_VIDEO_H264_LEVEL_4_2,
> > > > + .profile = V4L2_MPEG_VIDEO_H264_PROFILE_HIGH,
> > > > + },
> > > > + .h265_params = {
> > > > + .level = V4L2_MPEG_VIDEO_HEVC_LEVEL_4,
> > > > + .profile =
> > > > V4L2_MPEG_VIDEO_HEVC_PROFILE_MAIN_STILL_PICTURE,
> > > > + },
> > > > + .vp9_params = {
> > > > + .level = V4L2_MPEG_VIDEO_VP9_LEVEL_4_1,
> > > > + .profile = V4L2_MPEG_VIDEO_VP9_PROFILE_1,
> > > > + },
> > > > };
> > > >
> > > > const struct mtk_vcodec_dec_pdata mtk_vdec_8189_pdata = {
> > > > @@ -928,4 +1000,16 @@ const struct mtk_vcodec_dec_pdata
> > > > mtk_vdec_8189_pdata = {
> > > > .is_subdev_supported = true,
> > > > .hw_arch = MTK_VDEC_PURE_SINGLE_CORE,
> > > > .chip_name = 8189,
> > > > + .h264_params = {
> > > > + .level = V4L2_MPEG_VIDEO_H264_LEVEL_5_2,
> > > > + .profile = V4L2_MPEG_VIDEO_H264_PROFILE_HIGH_10,
> > > > + },
> > > > + .h265_params = {
> > > > + .level = V4L2_MPEG_VIDEO_HEVC_LEVEL_4,
> > > > + .profile =
> > > > V4L2_MPEG_VIDEO_HEVC_PROFILE_MAIN_STILL_PICTURE,
> > > > + },
> > > > + .vp9_params = {
> > > > + .level = V4L2_MPEG_VIDEO_VP9_LEVEL_5_2,
> > > > + .profile = V4L2_MPEG_VIDEO_VP9_PROFILE_2,
> > > > + },
> > > > };
> > >
> > >
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