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Date:   Thu, 17 Feb 2022 16:18:40 +0000
To:     Geert Uytterhoeven <geert@linux-m68k.org>
From:   Simon Ser <contact@emersion.fr>
Cc:     Thomas Zimmermann <tzimmermann@suse.de>,
        Linux Fbdev development list <linux-fbdev@vger.kernel.org>,
        David Airlie <airlied@linux.ie>, Helge Deller <deller@gmx.de>,
        Javier Martinez Canillas <javierm@redhat.com>,
        Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
        Linux/m68k <linux-m68k@vger.kernel.org>,
        DRI Development <dri-devel@lists.freedesktop.org>
Reply-To: Simon Ser <contact@emersion.fr>
Subject: Re: [PATCH 2/8] drm/fb-helper: Add support for DRM_FORMAT_C[124]
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On Thursday, February 17th, 2022 at 17:12, Geert Uytterhoeven <geert@linux-=
m68k.org> wrote:

> > What is C0?
>
> A non-existing color-indexed mode with zero colors ;-)
> Introduced purely to make a check like in the comment below work.
> What we really want to check here is if the mode is color-indexed
> or not...

Maybe it would be worth introducing a drm_format_info_is_color_indexed
function? Would be self-describing when used, and would avoid to miss
some places to update when adding new color-indexed formats.