On 3/7/22 21:52, Geert Uytterhoeven wrote:

As Rn is light-on-dark, and Cn can be any colors, there are currently
no fourcc codes to describe dark-on-light displays.

Introduce fourcc codes for a single-channel dark-on-light frame buffer
format with two, four, sixteen, or 256 darkness levels.

As the number of bits per pixel may be less than eight, some of these
formats rely on proper block handling for the calculation of bits per
pixel and pitch.

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
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Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>

-- 
Best regards,

Javier Martinez Canillas
Linux Engineering
Red Hat