drm/amd/display: Use drm helper for resetting plane state

[Why]
To help prevent plane state not being set to the correct default
value if any new properties are added in the future.

[How]
Use the drm helper - which seems to be the common solution among other
DRM drivers.

Signed-off-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Reviewed-by: Sun peng Li <Sunpeng.Li@amd.com>
Acked-by: Bhawanpreet Lakha <Bhawanpreet.Lakha@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

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 3769e0598130d3fee22ab143d0f88d547bd4f227..322216d7ccfede89e2ea1fed20323bb159cba970 100644 (file)
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
@@ -3657,13 +3657,8 @@ static void dm_drm_plane_reset(struct drm_plane *plane)
        amdgpu_state = kzalloc(sizeof(*amdgpu_state), GFP_KERNEL);
        WARN_ON(amdgpu_state == NULL);
 
-       if (amdgpu_state) {
-               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;
-       }
+       if (amdgpu_state)
+               __drm_atomic_helper_plane_reset(plane, &amdgpu_state->base);
 }
 
 static struct drm_plane_state *