diff --git a/thermal/1.0/IThermal.hal b/thermal/1.0/IThermal.hal
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+++ b/thermal/1.0/IThermal.hal
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+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.thermal@1.0;
+
+interface IThermal {
+
+    /*
+     * Retrieves temperatures in Celsius.
+     *
+     * @return status Status of the operation. If status code is FAILURE,
+     *         the status.debugMessage must be populated with the human-readable
+     *         error message.
+     * @return temperatures If status code is SUCCESS, it's filled with the
+     *         current temperatures. The order of temperatures of built-in
+     *         devices (such as CPUs, GPUs and etc.) in the list must be kept
+     *         the same regardless the number of calls to this method even if
+     *         they go offline, if these devices exist on boot. The method
+     *         always returns and never removes such temperatures.
+     *
+     */
+    getTemperatures()
+        generates (ThermalStatus status, vec<Temperature> temperatures);
+
+    /*
+     * Retrieves CPU usage information of each core: active and total times
+     * in ms since first boot.
+     *
+     * @return status Status of the operation. If status code is FAILURE,
+     *         the status.debugMessage must be populated with the human-readable
+     *         error message.
+     * @return cpuUsages If status code is SUCCESS, it's filled with the current
+     *         CPU usages. The order and number of CPUs in the list must be kept
+     *         the same regardless the number of calls to this method.
+     *
+     */
+    getCpuUsages() generates (ThermalStatus status, vec<CpuUsage> cpuUsages);
+
+    /*
+     * Retrieves the cooling devices information.
+     *
+     * @return status Status of the operation. If status code is FAILURE,
+     *         the status.debugMessage must be populated with the human-readable
+     *         error message.
+     * @return devices If status code is SUCCESS, it's filled with the current
+     *         cooling device information. The order of built-in coolling
+     *         devices in the list must be kept the same regardless the number
+     *         of calls to this method even if they go offline, if these devices
+     *         exist on boot. The method always returns and never removes from
+     *         the list such coolling devices.
+     *
+     */
+    getCoolingDevices()
+        generates (ThermalStatus status, vec<CoolingDevice> devices);
+
+};