drm/amd/display: Create overlay planes

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[Why]
Raven has support for combining pipes for DRM_PLANE_TYPE_OVERLAY use
but no overlays are exposed to userspace.

[How]
Expose overlay planes based on DC plane caps.

If all the pipes are in use then the atomic commits can fail, but this
is expected behavior for userspace.

Only support RGB on overlays for now.

Signed-off-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
Acked-by: Bhawanpreet Lakha <Bhawanpreet.Lakha@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

...

This commit is contained in:

Nicholas Kazlauskas 2019-01-18 13:57:14 -05:00 • committed by Alex Deucher

parent b2fddb136d

commit 0d579c7e25

1 changed files with 44 additions and 7 deletions

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

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