Hi DRM folks,
This short series makes simpledrm work on Apple M1 (including Pro/Max) platforms the way simplefb already does, by adding XRGB2101010 support and making it bind to framebuffers in /chosen the same way simplefb does.
This avoids breaking the bootloader-provided framebuffer console when simpledrm is selected to replace simplefb, as these FBs always seem to be 10-bit (at least when a real screen is attached).
Changes since v2: - Made 10-bit conversion code fill the LSBs - Added ARGB2101010 to supported formats list - Simplified OF core code per review feedback Hector Martin (3): of: Move simple-framebuffer device handling from simplefb to of drm/format-helper: Add drm_fb_xrgb8888_to_xrgb2101010_toio() drm/simpledrm: Add [AX]RGB2101010 formats
drivers/gpu/drm/drm_format_helper.c | 64 +++++++++++++++++++++++++++++ drivers/gpu/drm/tiny/simpledrm.c | 4 +- drivers/of/platform.c | 4 ++ drivers/video/fbdev/simplefb.c | 21 +--------- include/drm/drm_format_helper.h | 3 ++ 5 files changed, 74 insertions(+), 22 deletions(-)