drm/amd/display: Expose support for alpha blending on overlays

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[Why]
The DRM overlay planes DM exposes support RGBA formats but are currently
forced as fully opaque over whatever they overlay.

[How]
Expose DRM blending mode and alpha properties to userspace.

The overlays exposed support per-pixel pre-multiplied alpha along with
global plane opacity.

Signed-off-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Reviewed-by: Harry Wentland <Harry.Wentland@amd.com>
Acked-by: Leo Li <sunpeng.li@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

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Nicholas Kazlauskas 2019-02-21 14:57:48 -05:00 • committed by Alex Deucher

parent 42195a226b

commit d74004b694

1 changed files with 52 additions and 0 deletions

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drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c

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