drm/amd/pm: unify the interface for power gating

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/pm/amdgpu_dpm.c

@@ -927,7 +927,6 @@ int amdgpu_dpm_set_powergating_by_smu(struct amdgpu_device *adev, uint32_t block
 {
 	int ret = 0;
 	const struct amd_pm_funcs *pp_funcs = adev->powerplay.pp_funcs;
-	bool swsmu = is_support_sw_smu(adev);
 
 	switch (block_type) {
 	case AMD_IP_BLOCK_TYPE_UVD:
@@ -968,15 +967,7 @@ int amdgpu_dpm_set_powergating_by_smu(struct amdgpu_device *adev, uint32_t block
 	case AMD_IP_BLOCK_TYPE_GFX:
 	case AMD_IP_BLOCK_TYPE_VCN:
 	case AMD_IP_BLOCK_TYPE_SDMA:
-		if (pp_funcs && pp_funcs->set_powergating_by_smu) {
-			ret = (pp_funcs->set_powergating_by_smu(
-				(adev)->powerplay.pp_handle, block_type, gate));
-		}
-		break;
 	case AMD_IP_BLOCK_TYPE_JPEG:
-		if (swsmu)
-			ret = smu_dpm_set_power_gate(&adev->smu, block_type, gate);
-		break;
 	case AMD_IP_BLOCK_TYPE_GMC:
 	case AMD_IP_BLOCK_TYPE_ACP:
 		if (pp_funcs && pp_funcs->set_powergating_by_smu) {

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

@@ -1270,9 +1270,6 @@ bool is_support_sw_smu(struct amdgpu_device *adev);
 bool is_support_cclk_dpm(struct amdgpu_device *adev);
 int smu_write_watermarks_table(struct smu_context *smu);
 
-/* smu to display interface */
-extern int smu_dpm_set_power_gate(void *handle, uint32_t block_type, bool gate);
-
 int smu_get_dpm_freq_range(struct smu_context *smu, enum smu_clk_type clk_type,
 			   uint32_t *min, uint32_t *max);
 

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

@@ -268,9 +268,9 @@ static int smu_dpm_set_jpeg_enable(struct smu_context *smu,
  *    Under this case, the smu->mutex lock protection is already enforced on
  *    the parent API smu_force_performance_level of the call path.
  */
-int smu_dpm_set_power_gate(void *handle,
-			   uint32_t block_type,
-			   bool gate)
+static int smu_dpm_set_power_gate(void *handle,
+				  uint32_t block_type,
+				  bool gate)
 {
 	struct smu_context *smu = handle;
 	int ret = 0;