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SubjectRe: [PATCH v2 RFC 10/10] drm/fourcc: Add DRM_FORMAT_D[1248]
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 <>
> ---
Reviewed-by: Javier Martinez Canillas <>

Best regards,

Javier Martinez Canillas
Linux Engineering
Red Hat

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