[ Upstream commit eec3d5efd16d13984a88396b685ae17462fb6d87 ]
[Why] The plane_reset callback is subclassed but hasn't been updated since the drm helper got updated to include resetting alpha related state (state->alpha and state->pixel_blend_mode). The overlay planes exposed by amdgpu_dm were therefore being rendered as invisible by default ever since supported was exposed for alpha blending properties on overlays.
This caused regressions in igt@kms_plane_multiple@atomic-tiling-none and igt@kms_plane@plane-position-covered-pipe tests.
[How] Reset the plane state values to their correct values as defined in the drm helper.
This fixes the IGT test regression.
Signed-off-by: Nicholas Kazlauskas nicholas.kazlauskas@amd.com Reviewed-by: Harry Wentland Harry.Wentland@amd.com Acked-by: Bhawanpreet Lakha Bhawanpreet.Lakha@amd.com Signed-off-by: Alex Deucher alexander.deucher@amd.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c index c212bff457eec..b14369ab151f6 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c @@ -3587,6 +3587,8 @@ static void dm_drm_plane_reset(struct drm_plane *plane) plane->state = &amdgpu_state->base; plane->state->plane = plane; plane->state->rotation = DRM_MODE_ROTATE_0; + plane->state->alpha = DRM_BLEND_ALPHA_OPAQUE; + plane->state->pixel_blend_mode = DRM_MODE_BLEND_PREMULTI; } }