linux-kernel - Re: [PATCH v2 2/4] media: platform: mediatek: isp

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Message-ID: <20230703121853.GA16531@pendragon.ideasonboard.com>
Date:   Mon, 3 Jul 2023 15:18:53 +0300
From:   Laurent Pinchart <laurent.pinchart@...asonboard.com>
To:     Chun-Kuang Hu <chunkuang.hu@...nel.org>
Cc:     Julien Stephan <jstephan@...libre.com>,
        Louis Kuo <louis.kuo@...iatek.com>,
        Phi-bang Nguyen <pnguyen@...libre.com>,
        Florian Sylvestre <fsylvestre@...libre.com>,
        Alexander Gordeev <agordeev@...ux.ibm.com>,
        Andy Hsieh <andy.hsieh@...iatek.com>,
        AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...labora.com>,
        Conor Dooley <conor+dt@...nel.org>,
        daoyuan huang <daoyuan.huang@...iatek.com>,
        devicetree@...r.kernel.org,
        Hans Verkuil <hverkuil-cisco@...all.nl>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        linux-mediatek@...ts.infradead.org, linux-media@...r.kernel.org,
        Matthias Brugger <matthias.bgg@...il.com>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Moudy Ho <moudy.ho@...iatek.com>,
        Rob Herring <robh+dt@...nel.org>,
        Vasily Gorbik <gor@...ux.ibm.com>
Subject: Re: [PATCH v2 2/4] media: platform: mediatek: isp_30: add mediatek
 ISP3.0 sensor interface

On Sun, Jul 02, 2023 at 05:20:25PM +0800, Chun-Kuang Hu wrote:
> Chun-Kuang Hu <chunkuang.hu@...nel.org> 於 2023年7月2日 週日 上午7:35寫道：
> > Julien Stephan <jstephan@...libre.com> 於 2023年6月30日 週五 下午6:05寫道：
> > >
> > > From: Louis Kuo <louis.kuo@...iatek.com>
> > >
> > > This will add the mediatek ISP3.0 seninf (sensor interface) driver found
> > > on several Mediatek SoCs such as the mt8365.
> > >
> > > Then seninf module has 4 physical CSI-2 inputs. Depending on the soc they
> > > may not be all connected.
> > >
> > > Signed-off-by: Louis Kuo <louis.kuo@...iatek.com>
> > > Signed-off-by: Phi-bang Nguyen <pnguyen@...libre.com>
> > > Signed-off-by: Florian Sylvestre <fsylvestre@...libre.com>
> > > Signed-off-by: Laurent Pinchart <laurent.pinchart@...asonboard.com>
> > > Signed-off-by: Julien Stephan <jstephan@...libre.com>
> > >
> >
> > [snip]
> >
> > > +
> > > +static const struct mtk_seninf_conf seninf_8365_conf = {
> > > +       .model = "mtk-camsys-3.0",
> > > +       .nb_inputs = 4,
> > > +       .nb_muxes = 6,
> > > +       .nb_outputs = 4,
> > > +};
> > > +
> > > +static const struct of_device_id mtk_seninf_of_match[] = {
> > > +       {
> > > +               .compatible = "mediatek,mt8365-seninf",
> > > +               .data = &seninf_8365_conf,
> >
> > Now only support one SoC, so it's necessary to select the SoC data and
> > you could directly place the data in the code. After support other
> 
> Typo.
> 
> Now only support one SoC, so it's not necessary to select the SoC data
> and you could directly place the data in the code.

I think Julien has visibility on other SoCs that could use the same
driver, and has designed the mtk_seninf_conf structure accordingly. I'll
let Julien confirm (or tell I'm wrong).

> > SoC, so we could know what should be placed in struct mtg_seninf_conf
> > (Now we have no any information).
> >
> > > +       },
> > > +       {
> > > +       },
> > > +};
> > > +MODULE_DEVICE_TABLE(of, mtk_seninf_of_match);

-- 
Regards,

Laurent Pinchart