drm/amdgpu: add new callback to check power state info

Signed-off-by: Rex Zhu <Rex.Zhu@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/amdgpu/amdgpu_dpm.h

@@ -271,6 +271,11 @@ struct amdgpu_dpm_funcs {
 	int (*set_sclk_od)(struct amdgpu_device *adev, uint32_t value);
 	int (*get_mclk_od)(struct amdgpu_device *adev);
 	int (*set_mclk_od)(struct amdgpu_device *adev, uint32_t value);
+	int (*check_state_equal)(struct amdgpu_device *adev,
+				struct amdgpu_ps *cps,
+				struct amdgpu_ps *rps,
+				bool *equal);
+
 	struct amd_vce_state* (*get_vce_clock_state)(struct amdgpu_device *adev, unsigned idx);
 };
 
@@ -374,6 +379,8 @@ struct amdgpu_dpm_funcs {
 #define amdgpu_dpm_dispatch_task(adev, event_id, input, output)		\
 	(adev)->powerplay.pp_funcs->dispatch_tasks((adev)->powerplay.pp_handle, (event_id), (input), (output))
 
+#define amgdpu_dpm_check_state_equal(adev, cps, rps, equal) (adev)->pm.funcs->check_state_equal((adev), (cps),(rps),(equal))
+
 #define amdgpu_dpm_get_vce_clock_state(adev, i)				\
 	((adev)->pp_enabled ?						\
 	 (adev)->powerplay.pp_funcs->get_vce_clock_state((adev)->powerplay.pp_handle, (i)) : \