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drm/amd/display: Implement zpos property

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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: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Joshua Ashton <joshua@froggi.es>
Signed-off-by: Hamza Mahfooz <hamza.mahfooz@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Joshua Ashton 2023-07-09 03:06:58 +01:00 committed by Alex Deucher
parent 2b413c0229
commit 5b29369b54
1 changed files with 9 additions and 0 deletions
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9
drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_plane.c
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@ -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 ||