drm/amd/pm: unify the interface for gfx state setting

No need to have special handling for swSMU supported ASICs.
Signed-off-by: Evan Quan <evan.quan@amd.com>
Reviewed-by: Lijo Lazar <lijo.lazar@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.c

@@ -842,14 +842,10 @@ int amdgpu_gfx_get_num_kcq(struct amdgpu_device *adev)
 
 void amdgpu_gfx_state_change_set(struct amdgpu_device *adev, enum gfx_change_state state)
 {
-	if (is_support_sw_smu(adev)) {
-		smu_gfx_state_change_set(&adev->smu, state);
-	} else {
 	mutex_lock(&adev->pm.mutex);
 	if (adev->powerplay.pp_funcs &&
 	    adev->powerplay.pp_funcs->gfx_state_change_set)
 		((adev)->powerplay.pp_funcs->gfx_state_change_set(
 			(adev)->powerplay.pp_handle, state));
 	mutex_unlock(&adev->pm.mutex);
-	}
 }

drivers/gpu/drm/amd/pm/inc/amdgpu_smu.h

@@ -1282,8 +1282,6 @@ int smu_allow_xgmi_power_down(struct smu_context *smu, bool en);
 
 int smu_get_status_gfxoff(struct amdgpu_device *adev, uint32_t *value);
 
-int smu_gfx_state_change_set(struct smu_context *smu, uint32_t state);
-
 int smu_set_light_sbr(struct smu_context *smu, bool enable);
 
 int smu_wait_for_event(struct amdgpu_device *adev, enum smu_event_type event,

drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c

@@ -2906,8 +2906,10 @@ static int smu_enable_mgpu_fan_boost(void *handle)
 	return ret;
 }
 
-int smu_gfx_state_change_set(struct smu_context *smu, uint32_t state)
+static int smu_gfx_state_change_set(void *handle,
+				    uint32_t state)
 {
+	struct smu_context *smu = handle;
 	int ret = 0;
 
 	mutex_lock(&smu->mutex);
@@ -2980,6 +2982,7 @@ static const struct amd_pm_funcs swsmu_pm_funcs = {
 	.display_disable_memory_clock_switch = smu_display_disable_memory_clock_switch,
 	.get_max_sustainable_clocks_by_dc    = smu_get_max_sustainable_clocks_by_dc,
 	.load_firmware           = smu_load_microcode,
+	.gfx_state_change_set    = smu_gfx_state_change_set,
 };
 
 int smu_wait_for_event(struct amdgpu_device *adev, enum smu_event_type event,