linux-kernel - Re: [PATCH v1 4/4] drm/tegra: plane: Add custom CSC BLOB property

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Message-ID: <3b1c45ee-a48e-0cae-c7bc-b87e792f2b97@gmail.com>
Date:   Tue, 17 Apr 2018 20:31:11 +0300
From:   Dmitry Osipenko <digetx@...il.com>
To:     Thierry Reding <thierry.reding@...il.com>,
        Daniel Vetter <daniel@...ll.ch>
Cc:     linux-tegra@...r.kernel.org, linux-kernel@...r.kernel.org,
        dri-devel@...ts.freedesktop.org
Subject: Re: [PATCH v1 4/4] drm/tegra: plane: Add custom CSC BLOB property

On 17.04.2018 12:01, Daniel Vetter wrote:
> On Mon, Apr 16, 2018 at 03:16:28PM +0300, Dmitry Osipenko wrote:
>> This new property allows userspace to apply custom color conversion
>> coefficients per plane, making possible to utilize display controller
>> for color adjustments of a video overlay.
>>
>> Signed-off-by: Dmitry Osipenko <digetx@...il.com>
> 
> Same here, this needs corresponding userspace:
> 
> https://dri.freedesktop.org/docs/drm/gpu/drm-uapi.html#open-source-userspace-requirements
> 
> And again there's even more people who discussed extending the existing
> color management support for crtcs to planes. I think we definitely want a
> standard interface for this, not each driver doing their own thing.

Could you please point me to where that discussion is happening?