drm/amd/pm: init plpd_mode properly for different asics

Assign DEFAULT mode if it supports plpd, otherwise keeps NONE

v2: reduce ip version checks
Signed-off-by: Le Ma <le.ma@amd.com>
Reviewed-by: Lijo Lazar <lijo.lazar@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

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

@@ -1130,6 +1130,21 @@ static void smu_swctf_delayed_work_handler(struct work_struct *work)
 	orderly_poweroff(true);
 }
 
+static void smu_init_xgmi_plpd_mode(struct smu_context *smu)
+{
+	if (amdgpu_ip_version(smu->adev, MP1_HWIP, 0) == IP_VERSION(11, 0, 2)) {
+		smu->plpd_mode = XGMI_PLPD_DEFAULT;
+		return;
+	}
+
+	/* PMFW put PLPD into default policy after enabling the feature */
+	if (smu_feature_is_enabled(smu,
+				   SMU_FEATURE_XGMI_PER_LINK_PWR_DWN_BIT))
+		smu->plpd_mode = XGMI_PLPD_DEFAULT;
+	else
+		smu->plpd_mode = XGMI_PLPD_NONE;
+}
+
 static int smu_sw_init(void *handle)
 {
 	struct amdgpu_device *adev = (struct amdgpu_device *)handle;
@@ -1361,6 +1376,8 @@ static int smu_smc_hw_setup(struct smu_context *smu)
 		return ret;
 	}
 
+	smu_init_xgmi_plpd_mode(smu);
+
 	ret = smu_feature_get_enabled_mask(smu, &features_supported);
 	if (ret) {
 		dev_err(adev->dev, "Failed to retrieve supported dpm features!\n");