drm/amd/display: update plane functionalities

This patch introduces amdgpu_drm_plane_state
structure, which subclasses drm_plane_state and
holds data suitable for configuring hardware.

It switches reset(), atomic_duplicate_state()
& atomic_destroy_state() functions to new internal
implementation, earlier they were pointing to
drm core functions.

TESTS(On Chromium OS on Stoney Only)
* Builds without compilation errors.
* 'plane_test' passes for XR24 format
  based Overlay plane.
* Chromium OS ui comes up.

Signed-off-by: Shirish S <shirish.s@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

1 files changed, 13 insertions, 0 deletions

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_mode.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_mode.h
index 362d955..bdae70e 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_mode.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_mode.h
@@ -57,6 +57,7 @@ struct amdgpu_hpd;
 #define to_amdgpu_connector(x) container_of(x, struct amdgpu_connector, base)
 #define to_amdgpu_encoder(x) container_of(x, struct amdgpu_encoder, base)
 #define to_amdgpu_framebuffer(x) container_of(x, struct amdgpu_framebuffer, base)
+#define to_amdgpu_plane(x)	container_of(x, struct amdgpu_plane, base)
 
 #define AMDGPU_MAX_HPD_PINS 6
 #define AMDGPU_MAX_CRTCS 6
@@ -439,6 +440,18 @@ struct amdgpu_crtc {
 	struct drm_pending_vblank_event *event;
 };
 
+struct amdgpu_drm_plane_state {
+	struct drm_plane_state base;
+	unsigned int h_ratio;
+	unsigned int v_ratio;
+};
+
+static inline struct amdgpu_drm_plane_state *
+to_amdgpu_plane_state(struct drm_plane_state *state)
+{
+	return container_of(state, struct amdgpu_drm_plane_state, base);
+}
+
 struct amdgpu_plane {
 	struct drm_plane base;
 	enum drm_plane_type plane_type;