drm: Add new general DRM property "color format"

Add a new general DRM property named "color format" which can be used by
userspace to request the display driver to output a particular color
format.

Possible string values for the new enum property are:
 - "AUTO" (setup by default, driver internally picks the color format)
 - "RGB"
 - "YUV 4:4:4"
 - "YUV 4:2:2"
 - "YUV 4:2:0"

Drivers should advertise from this list the formats they support in an
optimistic best-case scenario. EDID data from the sink can then be used
in the kernel's atomic check phase to restrict this set of formats, as
well as by userspace to make a correct choice in the first place.

Co-developed-by: Werner Sembach <wse@tuxedocomputers.com>
Signed-off-by: Werner Sembach <wse@tuxedocomputers.com>
Co-developed-by: Andri Yngvason <andri@yngvason.is>
Signed-off-by: Andri Yngvason <andri@yngvason.is>
Signed-off-by: Marius Vlad <marius.vlad@collabora.com>
Reviewed-by: Maxime Ripard <mripard@kernel.org>
Reviewed-by: Daniel Stone <daniel@fooishbar.org>
Signed-off-by: Nicolas Frattaroli <nicolas.frattaroli@collabora.com>
Link: https://patch.msgid.link/20260609-color-format-v17-3-35739b5782cc@collabora.com
Signed-off-by: Daniel Stone <daniels@collabora.com>

0 files changed, 0 insertions, 0 deletions