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Message-ID: <17525028-80bb-cd03-fbc9-b8ff65378517@collabora.com>
Date:   Thu, 27 Apr 2023 17:15:18 +0200
From:   AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...labora.com>
To:     "Jason-JH.Lin" <jason-jh.lin@...iatek.com>,
        Chun-Kuang Hu <chunkuang.hu@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Matthias Brugger <matthias.bgg@...il.com>
Cc:     CK Hu <ck.hu@...iatek.com>, Rex-BC Chen <rex-bc.chen@...iatek.com>,
        Singo Chang <singo.chang@...iatek.com>,
        dri-devel@...ts.freedesktop.org,
        linux-mediatek@...ts.infradead.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        Project_Global_Chrome_Upstream_Group@...iatek.com
Subject: Re: [PATCH RESEND v3 0/9] Add gamma lut support for mt8195

Il 26/04/23 13:43, AngeloGioacchino Del Regno ha scritto:
> Il 12/09/22 03:29, Jason-JH.Lin ha scritto:
>> Since the gamma_set_common() function for previous SoC,
>> such asĀ  mt8173 and mt8183, is designed for 9bit-to-10bit
>> conversion.
>> mt8195 is using 10bit-to-12bit conversion, which is
>> not compatible with the previous function.
>>
>> Thus, need to update the function to fit the need of mt8195.
> 
> Hello,
> can you please respin and fix this series on the latest linux-next?
> 
> Besides, please test it carefully: as far as I can see, GNOME Night Light
> (or others) are not working on MT8195 (color temperature/ccorr).
> As for gamma itself, that's not working either; you can test it with a tool
> that will create a color profile by applying a new VCGT table, please look
> at [1] if you need tools.
> 
> We can confirm that color correction works on at least MT8192 (colord), so
> it's MT8195 at fault.
> 
> [1]: https://github.com/zb3/gnome-gamma-tool
> 

Nevermind. I've actually fixed this code and refactored it a bit as well.

I'll push my own version soon. No action required.

Regards,
Angelo

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