[PATCH 2/8] drm/fb-helper: Add support for DRM_FORMAT_C[124]

[Simon Ser]

On Thursday, February 17th, 2022 at 17:12, Geert Uytterhoeven <geert at 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.