Commit 5b29369b authored by Joshua Ashton's avatar Joshua Ashton Committed by Alex Deucher
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drm/amd/display: Implement zpos property 



Despite certain GPUs supporting multiple overlay planes already in
AMDGPU, the driver did not expose the zpos property which is required
for userspace to take advantage of multiple overlay planes in any
meaningful way.

The driver was already hooked up to normalized_zpos, but was just
missing the exposure of it.

Cc: Harry Wentland <harry.wentland@amd.com>
Cc: Melissa Wen <mwen@igalia.com>
Cc: Simon Ser <contact@emersion.fr>
Reviewed-by: default avatarHarry Wentland <harry.wentland@amd.com>
Signed-off-by: default avatarJoshua Ashton <joshua@froggi.es>
Signed-off-by: default avatarHamza Mahfooz <hamza.mahfooz@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent 2b413c02

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

+9 −0
Original line number Diff line number Diff line
@@ -1468,6 +1468,15 @@ int amdgpu_dm_plane_init(struct amdgpu_display_manager *dm, 
		drm_plane_create_blend_mode_property(plane, blend_caps);

	}



	if (plane->type == DRM_PLANE_TYPE_PRIMARY) {

		drm_plane_create_zpos_immutable_property(plane, 0);

	} else if (plane->type == DRM_PLANE_TYPE_OVERLAY) {

		unsigned int zpos = 1 + drm_plane_index(plane);

		drm_plane_create_zpos_property(plane, zpos, 1, 254);

	} else if (plane->type == DRM_PLANE_TYPE_CURSOR) {

		drm_plane_create_zpos_immutable_property(plane, 255);

	}



	if (plane->type == DRM_PLANE_TYPE_PRIMARY &&

	    plane_cap &&

	    (plane_cap->pixel_format_support.nv12 ||