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Add helper drm_crtc_fill_palette_332(), which fills palettes with RGB332 color data. Each color in RGB332 format serves as an index into an 8-bit palette that stores the corresponding component-based colors. Vesadrm will use the new helper to emulate RGB formats on top of framebuffers in C8 format. v2: - add comments on bit operations (Javier) Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de> Reviewed-by: Javier Martinez Canillas <javierm@redhat.com> Link: https://lore.kernel.org/r/20250714151513.309475-6-tzimmermann@suse.de