[PATCH libdrm v2 00/10] Add support for low-color frame buffer formats

[Sam Ravnborg]

Hi Geert,

On Fri, Jul 08, 2022 at 08:21:30PM +0200, Geert Uytterhoeven wrote:
> 	Hi all,
> 
> A long outstanding issue with the DRM subsystem has been the lack of
> support for low-color displays, as used typically on older desktop
> systems, and on small embedded displays.
> 
> This patch series adds support for color-indexed frame buffer formats
> with 2, 4, and 16 colors.  It has been tested on ARAnyM using a
> work-in-progress Atari DRM driver.
> 
> Changes compared to v1:
>   - SMPTE color LUT accuracy,
>   - Factor out smpte color LUT,
>   - Restructure patches,
>   - Improve descriptions.
>   - Store number of colors for indexed formats,
>   - Add SMPTE pattern support for the C1 and C2 formats.
> 
> Please refer to [2] for related Linux DRM patches and background
> information.
> 
> Thanks for your comments!
> 
> [1] "[PATCH libdrm 0/3] Add support for low-color frame buffer formats"
>     https://lore.kernel.org/r/cover.1646683737.git.geert@linux-m68k.org
> [2] "[PATCH v3 00/10] drm: Add support for low-color frame buffer formats"
>     https://lore.kernel.org/r/cover.1657294931.git.geert@linux-m68k.org
> 
> Geert Uytterhoeven (10):
>   util: Improve SMPTE color LUT accuracy
>   util: Factor out and optimize C8 SMPTE color LUT
>   [RFC] drm_fourcc: Add DRM_FORMAT_C[124]
>   util: Add support for DRM_FORMAT_C[124]
>   util: Store number of colors for indexed formats
>   util: Add SMPTE pattern support for C4 format
>   util: Add SMPTE pattern support for C1 format
>   util: Add SMPTE pattern support for C2 format
>   modetest: Add support for DRM_FORMAT_C[124]
>   modetest: Add SMPTE pattern support for C4 format

I have browsed the patches - everything looked good.
The parts with Floyd-Steinberg dithering did get less
attention as I do not know it.
But everything looked good and the series is:

Acked-by: Sam Ravnborg <sam at ravnborg.org>

	Sam