drm/amd/pm: unify the interface for loading SMU microcode

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/gfx_v10_0.c

@@ -7170,16 +7170,10 @@ static int gfx_v10_0_hw_init(void *handle)
 		 * loaded firstly, so in direct type, it has to load smc ucode
 		 * here before rlc.
 		 */
-		if (adev->smu.ppt_funcs != NULL && !(adev->flags & AMD_IS_APU)) {
-			r = smu_load_microcode(&adev->smu);
+		if (!(adev->flags & AMD_IS_APU)) {
+			r = amdgpu_pm_load_smu_firmware(adev, NULL);
 			if (r)
 				return r;
-
-			r = smu_check_fw_status(&adev->smu);
-			if (r) {
-				pr_err("SMC firmware status is not correct\n");
-				return r;
-			}
 		}
 		gfx_v10_0_disable_gpa_mode(adev);
 	}

drivers/gpu/drm/amd/pm/amdgpu_dpm.c

@@ -1606,7 +1606,10 @@ int amdgpu_pm_load_smu_firmware(struct amdgpu_device *adev, uint32_t *smu_versio
 			pr_err("smu firmware loading failed\n");
 			return r;
 		}
-		*smu_version = adev->pm.fw_version;
+
+		if (smu_version)
+			*smu_version = adev->pm.fw_version;
 	}
+
 	return 0;
 }

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

@@ -1252,10 +1252,6 @@ enum smu_cmn2asic_mapping_type {
 	[profile] = {1, (workload)}
 
 #if !defined(SWSMU_CODE_LAYER_L2) && !defined(SWSMU_CODE_LAYER_L3) && !defined(SWSMU_CODE_LAYER_L4)
-int smu_load_microcode(struct smu_context *smu);
-
-int smu_check_fw_status(struct smu_context *smu);
-
 int smu_get_power_limit(struct smu_context *smu,
 			uint32_t *limit,
 			enum smu_ppt_limit_level limit_level);

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

@@ -2095,36 +2095,34 @@ const struct amdgpu_ip_block_version smu_v13_0_ip_block =
 	.funcs = &smu_ip_funcs,
 };
 
-int smu_load_microcode(struct smu_context *smu)
+static int smu_load_microcode(void *handle)
 {
+	struct smu_context *smu = handle;
+	struct amdgpu_device *adev = smu->adev;
 	int ret = 0;
 
-	if (!smu->pm_enabled || !smu->adev->pm.dpm_enabled)
+	if (!smu->pm_enabled)
 		return -EOPNOTSUPP;
 
-	mutex_lock(&smu->mutex);
+	/* This should be used for non PSP loading */
+	if (adev->firmware.load_type == AMDGPU_FW_LOAD_PSP)
+		return 0;
 
-	if (smu->ppt_funcs->load_microcode)
+	if (smu->ppt_funcs->load_microcode) {
 		ret = smu->ppt_funcs->load_microcode(smu);
+		if (ret) {
+			dev_err(adev->dev, "Load microcode failed\n");
+			return ret;
+		}
+	}
 
-	mutex_unlock(&smu->mutex);
-
-	return ret;
-}
-
-int smu_check_fw_status(struct smu_context *smu)
-{
-	int ret = 0;
-
-	if (!smu->pm_enabled || !smu->adev->pm.dpm_enabled)
-		return -EOPNOTSUPP;
-
-	mutex_lock(&smu->mutex);
-
-	if (smu->ppt_funcs->check_fw_status)
+	if (smu->ppt_funcs->check_fw_status) {
 		ret = smu->ppt_funcs->check_fw_status(smu);
-
-	mutex_unlock(&smu->mutex);
+		if (ret) {
+			dev_err(adev->dev, "SMC is not ready\n");
+			return ret;
+		}
+	}
 
 	return ret;
 }
@@ -2981,6 +2979,7 @@ static const struct amd_pm_funcs swsmu_pm_funcs = {
 	.set_watermarks_for_clock_ranges     = smu_set_watermarks_for_clock_ranges,
 	.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,
 };
 
 int smu_wait_for_event(struct amdgpu_device *adev, enum smu_event_type event,