drm/amd/pm: only send GmiPwrDnControl msg on master die (v3)

PMFW only returns 0 on master die and sends NACK back on other dies for
the message.

v2: only send GmiPwrDnControl msg on master die instead of all
dies.
v3: remove the pointer check for get_socket_id and get_die_id as they
should be present on Aldebaran.
Signed-off-by: Tao Zhou <tao.zhou1@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/smu13/aldebaran_ppt.c

@@ -1625,10 +1625,18 @@ static int aldebaran_set_df_cstate(struct smu_context *smu,
 
 static int aldebaran_allow_xgmi_power_down(struct smu_context *smu, bool en)
 {
-	return smu_cmn_send_smc_msg_with_param(smu,
-					       SMU_MSG_GmiPwrDnControl,
-					       en ? 0 : 1,
-					       NULL);
+	struct amdgpu_device *adev = smu->adev;
+
+	/* The message only works on master die and NACK will be sent
+	   back for other dies, only send it on master die */
+	if (!adev->smuio.funcs->get_socket_id(adev) &&
+	    !adev->smuio.funcs->get_die_id(adev))
+		return smu_cmn_send_smc_msg_with_param(smu,
+				   SMU_MSG_GmiPwrDnControl,
+				   en ? 0 : 1,
+				   NULL);
+	else
+		return 0;
 }
 
 static const struct throttling_logging_label {