diff --git a/thermalCommon.h b/thermalCommon.h
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+++ b/thermalCommon.h
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+/*
+ * Copyright (c) 2020, The Linux Foundation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *	* Redistributions of source code must retain the above copyright
+ *	  notice, this list of conditions and the following disclaimer.
+ *	* Redistributions in binary form must reproduce the above
+ *	  copyright notice, this list of conditions and the following
+ *	  disclaimer in the documentation and/or other materials provided
+ *	  with the distribution.
+ *	* Neither the name of The Linux Foundation nor the names of its
+ *	  contributors may be used to endorse or promote products derived
+ *	  from this software without specific prior written permission.
+ *
+ *
+ * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+ * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+ * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef THERMAL_THERMAL_COMMON_H__
+#define THERMAL_THERMAL_COMMON_H__
+
+#include "thermalData.h"
+
+namespace android {
+namespace hardware {
+namespace thermal {
+namespace V2_0 {
+namespace implementation {
+
+class ThermalCommon {
+	public:
+		ThermalCommon();
+		~ThermalCommon() = default;
+
+		int readFromFile(std::string_view path, std::string *out);
+		int initThermalZones(std::vector<struct target_therm_cfg> cfg);
+		void initThreshold(struct therm_sensor sens);
+		int initCdev();
+
+		int read_cdev_state(struct therm_cdev *cdev);
+		int read_temperature(struct therm_sensor *sensor);
+		int estimateSeverity(struct therm_sensor *sensor);
+		int get_cpu_usages(hidl_vec<CpuUsage> *list);
+
+		std::vector<struct therm_sensor> fetch_sensor_list()
+		{
+			return sens;
+		};
+		std::vector<struct therm_cdev> fetch_cdev_list()
+		{
+			return cdev;
+		};
+
+	private:
+		int ncpus;
+		std::vector<struct target_therm_cfg> cfg;
+		std::vector<struct therm_sensor> sens;
+		std::vector<struct therm_cdev> cdev;
+
+		int initializeCpuSensor(struct target_therm_cfg cpu_cfg);
+		int initialize_sensor(struct target_therm_cfg cfg,
+					int sens_idx);
+};
+
+}  // namespace implementation
+}  // namespace V2_0
+}  // namespace thermal
+}  // namespace hardware
+}  // namespace android
+
+#endif  // THERMAL_THERMAL_COMMON_H__