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

Geert Uytterhoeven
2022-02-17T17:21:45Z

Hi Simon,

On Thu, Feb 17, 2022 at 5:18 PM Simon Ser <contact@emersion.fr> wrote:
> 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.

Yep, and a .is_color_indexed flag, cfr. the existing .is_yuv flag.

Gr{oetje,eeting}s,

Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
-- Linus Torvalds