drm/amd/display: Clean dm_plane_state hooks.

New surface is created in check only, in duplicate we just
reference exsisting surface and in destroy we release it.

Signed-off-by: Andrey Grodzovsky <Andrey.Grodzovsky@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
Acked-by: Harry Wentland <Harry.Wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_types.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_types.c
index c222cdb..0439f75 100644 (file)
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_types.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_types.c
@@ -1417,7 +1417,6 @@ const struct drm_encoder_helper_funcs amdgpu_dm_encoder_helper_funcs = {
 static void dm_drm_plane_reset(struct drm_plane *plane)
 {
        struct dm_plane_state *amdgpu_state = NULL;
-       struct amdgpu_device *adev = plane->dev->dev_private;
 
        if (plane->state)
                plane->funcs->atomic_destroy_state(plane, plane->state);
@@ -1428,9 +1427,6 @@ 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;
-
-               amdgpu_state->dc_surface = dc_create_surface(adev->dm.dc);
-               WARN_ON(!amdgpu_state->dc_surface);
        }
        else
                WARN_ON(1);
@@ -1440,35 +1436,17 @@ static struct drm_plane_state *
 dm_drm_plane_duplicate_state(struct drm_plane *plane)
 {
        struct dm_plane_state *dm_plane_state, *old_dm_plane_state;
-       struct amdgpu_device *adev = plane->dev->dev_private;
 
        old_dm_plane_state = to_dm_plane_state(plane->state);
        dm_plane_state = kzalloc(sizeof(*dm_plane_state), GFP_KERNEL);
        if (!dm_plane_state)
                return NULL;
 
-       if (old_dm_plane_state->dc_surface) {
-               struct dc_surface *dc_surface = dc_create_surface(adev->dm.dc);
-               if (WARN_ON(!dc_surface))
-                       return NULL;
-
-               __drm_atomic_helper_plane_duplicate_state(plane, &dm_plane_state->base);
-
-               memcpy(dc_surface, old_dm_plane_state->dc_surface, sizeof(*dc_surface));
+       __drm_atomic_helper_plane_duplicate_state(plane, &dm_plane_state->base);
 
-               if (old_dm_plane_state->dc_surface->gamma_correction)
-                       dc_gamma_retain(dc_surface->gamma_correction);
-
-               if (old_dm_plane_state->dc_surface->in_transfer_func)
-                       dc_transfer_func_retain(dc_surface->in_transfer_func);
-
-               dm_plane_state->dc_surface = dc_surface;
-
-               /*TODO Check for inferred values to be reset */
-       }
-       else {
-               WARN_ON(1);
-               return NULL;
+       if (old_dm_plane_state->dc_surface) {
+               dm_plane_state->dc_surface = old_dm_plane_state->dc_surface;
+               dc_surface_retain(dm_plane_state->dc_surface);
        }
 
        return &dm_plane_state->base;
@@ -1479,17 +1457,8 @@ void dm_drm_plane_destroy_state(struct drm_plane *plane,
 {
        struct dm_plane_state *dm_plane_state = to_dm_plane_state(state);
 
-       if (dm_plane_state->dc_surface) {
-               struct dc_surface *dc_surface = dm_plane_state->dc_surface;
-
-               if (dc_surface->gamma_correction)
-                       dc_gamma_release(&dc_surface->gamma_correction);
-
-               if (dc_surface->in_transfer_func)
-                       dc_transfer_func_release(dc_surface->in_transfer_func);
-
-               dc_surface_release(dc_surface);
-       }
+       if (dm_plane_state->dc_surface)
+               dc_surface_release(dm_plane_state->dc_surface);
 
        __drm_atomic_helper_plane_destroy_state(state);
        kfree(dm_plane_state);