linux-kernel - Re: [PATCH v5 00/12] Enable jpeg enc & dec multi-hardwares for MT8196

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Message-ID: <23ace820d130e5d18c599d29e960652be49e1457.camel@ndufresne.ca>
Date: Fri, 30 May 2025 13:45:46 -0400
From: Nicolas Dufresne <nicolas@...fresne.ca>
To: Kyrie Wu <kyrie.wu@...iatek.com>, Hans Verkuil
 <hverkuil-cisco@...all.nl>,  Mauro Carvalho Chehab	 <mchehab@...nel.org>,
 Rob Herring <robh@...nel.org>, Krzysztof Kozlowski	 <krzk+dt@...nel.org>,
 Conor Dooley <conor+dt@...nel.org>, Matthias Brugger	
 <matthias.bgg@...il.com>, AngeloGioacchino Del Regno	
 <angelogioacchino.delregno@...labora.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
Cc: srv_heupstream@...iatek.com
Subject: Re: [PATCH v5 00/12] Enable jpeg enc & dec multi-hardwares for
 MT8196

Hi,

Le vendredi 30 mai 2025 à 15:45 +0800, Kyrie Wu a écrit :
> This series adds support for mt8196 multi-hardwares jpeg enc & dec,
> by first adding mt8196 jpegdec and jpegenc compatible to install
> kernel driver. Add smmu setting to support smmu and iommu at the
> same time.
> Secondly refactor buffer and clock setting to support multi-hw jpeg
> working.
> Lastly, fix some bugs, including resolution change handleing, stop
> streaming sw flow and others.
> 
> This series has been tested with MT8196 tast test.
> Encoding and decoding worked for this chip.
> 
> Patches 1-3 Adds jpeg encoder and decoder compatible.
> Patches 4 add jpeg smmu sid setting.
> Patches 5 fix jpeg hw count setting to support different chips.
> Patches 6 refactor jpeg buffer payload setting to handle buffer
> size bug while resolution changed.
> Patches 7 reconstruct jpeg dst buffer layout.
> Patches 8 fix multi-core stop streaming flow
> Patches 9 refactor multi-core clk suspend/resume setting
> Patches 10 fix decoding buffer number setting timing issue
> Patches 11 refactor decoding resolution change operation
> Patches 12 fix remove buffer operation

Just general comment, you built your patchset up-side-down. Start
with the fixes of things that was already broken, then do your multi-core
support refactoring, and only then add MT8196. Looking for a v6 with
a re-organization of the set.

Nicolas

> 
> ---
> This series patches dependent on:
> [1]
> https://patchwork.linuxtv.org/project/linux-media/patch/20250424090824.5309-1-jianhua.lin@mediatek.com/
> 
> Changes compared with v4:
> --fix kernel robot build errors for patch 4.
> --add reviewer for patch 1 and patch 2.
> 
> Changes compared with v3:
> --change patch subject of jpeg encoder and decoder compatible.
> 
> Changes compared with v2:
> --refactor smmu sid setting function interface
> --Some modifications for patch v2's review comments.
> 
> Changes compared with v1:
> --refine jpeg dt-bindings for MT8196
> --optimize software code to manage jpeg HW count
> --refactor smmu sid setting function interface
> --Some modifications for patch v1's review comments.
> 
> Kyrie Wu (12):
>   media: dt-bindings: mediatek,jpeg: Add mediatek, mt8196-jpgdec
>     compatible
>   media: dt-bindings: mediatek,jpeg: Add mediatek, mt8196-jpgenc
>     compatible
>   media: mediatek: jpeg: add jpeg compatible
>   media: mediatek: jpeg: add jpeg smmu sid setting
>   media: mediatek: jpeg: fix jpeg hw count setting
>   media: mediatek: jpeg: refactor jpeg buffer payload setting
>   media: mediatek: jpeg: refactor jpeg dst buffer layout
>   media: mediatek: jpeg: fix stop streaming flow for multi-core
>   media: mediatek: jpeg: refactor multi-core clk suspend and resume
>     setting
>   media: mediatek: jpeg: fix decoding buffer number setting timing issue
>   media: mediatek: jpeg: refactor decoding resolution change operation
>   media: mediatek: jpeg: fix remove buffer operation for multi-core
> 
>  .../media/mediatek,mt8195-jpegdec.yaml        |   8 +-
>  .../media/mediatek,mt8195-jpegenc.yaml        |   8 +-
>  .../platform/mediatek/jpeg/mtk_jpeg_core.c    | 169 +++++++++++++-----
>  .../platform/mediatek/jpeg/mtk_jpeg_core.h    |  21 ++-
>  .../platform/mediatek/jpeg/mtk_jpeg_dec_hw.c  | 112 +++++++++++-
>  .../platform/mediatek/jpeg/mtk_jpeg_enc_hw.c  | 112 +++++++++++-
>  6 files changed, 377 insertions(+), 53 deletions(-)