linux-kernel - Re: [PATCH v5, 00/15] Using component framework to support multi hardware decode

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Date:   Wed, 18 Aug 2021 11:11:57 -0300
From:   Ezequiel Garcia <ezequiel@...guardiasur.com.ar>
To:     Yunfei Dong <yunfei.dong@...iatek.com>,
        Daniel Vetter <daniel@...ll.ch>,
        dri-devel <dri-devel@...ts.freedesktop.org>
Cc:     Alexandre Courbot <acourbot@...omium.org>,
        Hans Verkuil <hverkuil-cisco@...all.nl>,
        Tzung-Bi Shih <tzungbi@...omium.org>,
        Tiffany Lin <tiffany.lin@...iatek.com>,
        Andrew-CT Chen <andrew-ct.chen@...iatek.com>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Matthias Brugger <matthias.bgg@...il.com>,
        Tomasz Figa <tfiga@...gle.com>,
        Hsin-Yi Wang <hsinyi@...omium.org>,
        Fritz Koenig <frkoenig@...omium.org>,
        Irui Wang <irui.wang@...iatek.com>,
        linux-media <linux-media@...r.kernel.org>,
        devicetree <devicetree@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        linux-arm-kernel <linux-arm-kernel@...ts.infradead.org>,
        srv_heupstream <srv_heupstream@...iatek.com>,
        "moderated list:ARM/Mediatek SoC support" 
        <linux-mediatek@...ts.infradead.org>,
        Project_Global_Chrome_Upstream_Group@...iatek.com,
        George Sun <george.sun@...iatek.com>
Subject: Re: [PATCH v5, 00/15] Using component framework to support multi
 hardware decode

+danvet

Hi,

On Tue, 10 Aug 2021 at 23:58, Yunfei Dong <yunfei.dong@...iatek.com> wrote:
>
> This series adds support for multi hardware decode into mtk-vcodec, by first
> adding component framework to manage each hardware information: interrupt,
> clock, register bases and power. Secondly add core thread to deal with core
> hardware message, at the same time, add msg queue for different hardware
> share messages. Lastly, the architecture of different specs are not the same,
> using specs type to separate them.
>

I don't think it's a good idea to introduce the component API in the
media subsystem. It doesn't seem to be maintained, IRC there's not even
a maintainer for it, and it has some issues that were never addressed.

It would be really important to avoid it. Is it really needed in the
first place?

Thanks,
Ezequiel