thermal.cpp - LeafOS-Project/android_hardware_qcom_thermal - Gitiles

 /*
  * 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.
  *
  * Changes from Qualcomm Innovation Center are provided under the following license:
  * Copyright (c) 2022 Qualcomm Innovation Center, Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted (subject to the limitations in the
  * disclaimer below) 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 Qualcomm Innovation Center, Inc. nor the names of its
  *     contributors may be used to endorse or promote products derived
  *     from this software without specific prior written permission.
  *
  * NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE
  * GRANTED BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT
  * HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED
  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  * IN NO EVENT SHALL THE COPYRIGHT HOLDER 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.
  */

 #include <ctype.h>
 #include <errno.h>
 #include <inttypes.h>
 #include <stdlib.h>
 #include <cerrno>
 #include <mutex>
 #include <string>

 #include <android-base/file.h>
 #include <android-base/logging.h>
 #include <hidl/HidlTransportSupport.h>

 #include "thermal.h"

 namespace android {
 namespace hardware {
 namespace thermal {
 namespace V2_0 {
 namespace implementation {

 using ::android::hardware::interfacesEqual;

 static const Temperature_1_0 dummy_temp_1_0 = {
 	.type = TemperatureType_1_0::SKIN,
 	.name = "test sensor",
 	.currentValue = 30,
 	.throttlingThreshold = 40,
 	.shutdownThreshold = 60,
 	.vrThrottlingThreshold = 40,
 };

 static const Temperature dummy_temp_2_0 = {
 	.type = TemperatureType::SKIN,
 	.name = "test sensor",
 	.value = 25.0,
 	.throttlingStatus = ThrottlingSeverity::NONE,
 };

 template <typename A, typename B>
 Return<void> exit_hal(A _cb, hidl_vec<B> _data, std::string_view _msg) {
 	ThermalStatus _status;

 	_status.code = ThermalStatusCode::FAILURE;
 	_status.debugMessage = _msg.data();
 	LOG(ERROR) << _msg;
 	_cb(_status, _data);

 	return Void();
 }

 template <typename A>
 Return<void> exit_hal(A _cb, std::string_view _msg) {
 	ThermalStatus _status;

 	_status.code = ThermalStatusCode::FAILURE;
 	_status.debugMessage = _msg.data();
 	LOG(ERROR) << _msg;
 	_cb(_status);

 	return Void();
 }

 Thermal::Thermal():
 	utils(std::bind(&Thermal::sendThrottlingChangeCB, this,
 				std::placeholders::_1))
 { }

 Return<void> Thermal::getTemperatures(getTemperatures_cb _hidl_cb)
 {
 	ThermalStatus status;
 	hidl_vec<Temperature_1_0> temperatures;

 	status.code = ThermalStatusCode::SUCCESS;
 	if (!utils.isSensorInitialized()) {
 		std::vector<Temperature_1_0> _temp = {dummy_temp_1_0};
 		LOG(INFO) << "Returning Dummy Value" << std::endl;
 		_hidl_cb(status, _temp);
 		return Void();
 	}

 	if (utils.readTemperatures(temperatures) <= 0)
 		return exit_hal(_hidl_cb, temperatures,
 				"Sensor Temperature read failure.");

 	_hidl_cb(status, temperatures);

 	return Void();
 }

 Return<void> Thermal::getCpuUsages(getCpuUsages_cb _hidl_cb)
 {

 	ThermalStatus status;
 	hidl_vec<CpuUsage> cpu_usages;

 	status.code = ThermalStatusCode::SUCCESS;
 	if (utils.fetchCpuUsages(cpu_usages) <= 0)
 		return exit_hal(_hidl_cb, cpu_usages,
 				"CPU usage read failure.");

 	_hidl_cb(status, cpu_usages);
 	return Void();
 }

 Return<void> Thermal::getCoolingDevices(getCoolingDevices_cb _hidl_cb)
 {
 	ThermalStatus status;
 	hidl_vec<CoolingDevice_1_0> cdev;

 	status.code = ThermalStatusCode::SUCCESS;
 	/* V1 Cdev requires only Fan Support. */
 	_hidl_cb(status, cdev);
 	return Void();
 }

 Return<void> Thermal::getCurrentCoolingDevices(
 				bool filterType,
 				cdevType type,
 				getCurrentCoolingDevices_cb _hidl_cb)
 {
 	ThermalStatus status;
 	hidl_vec<CoolingDevice> cdev;

 	status.code = ThermalStatusCode::SUCCESS;
 	if (!utils.isCdevInitialized())
 		return exit_hal(_hidl_cb, cdev,
 			"ThermalHAL not initialized properly.");
 	if (utils.readCdevStates(filterType, type, cdev) <= 0)
 		return exit_hal(_hidl_cb, cdev,
 			"Failed to read thermal cooling devices.");

 	_hidl_cb(status, cdev);
 	return Void();
 }

 Return<void> Thermal::getCurrentTemperatures(
 				bool filterType,
 				TemperatureType type,
 				getCurrentTemperatures_cb _hidl_cb)
 {
 	ThermalStatus status;
 	hidl_vec<Temperature> temperatures;

 	status.code = ThermalStatusCode::SUCCESS;
 	if (!utils.isSensorInitialized())
 		return exit_hal(_hidl_cb, temperatures,
 			"ThermalHAL not initialized properly.");

 	if (utils.readTemperatures(filterType, type, temperatures) <= 0) {
 		if (filterType && type != dummy_temp_2_0.type) {
 			status.code = ThermalStatusCode::FAILURE;
 			status.debugMessage = "Failed to read dummy temperature value";
 		} else {
 			temperatures = {dummy_temp_2_0};
 			LOG(INFO) << "Returning Dummy Temperature Value" << std::endl;
 		}
 	}

 	_hidl_cb(status, temperatures);

 	return Void();
 }

 Return<void> Thermal::getTemperatureThresholds(
 				bool filterType,
 				TemperatureType type,
 				getTemperatureThresholds_cb _hidl_cb)
 {
 	ThermalStatus status;
 	hidl_vec<TemperatureThreshold> thresh;

 	status.code = ThermalStatusCode::SUCCESS;
 	if (!utils.isSensorInitialized())
 		return exit_hal(_hidl_cb, thresh,
 			"ThermalHAL not initialized properly.");

 	if (utils.readTemperatureThreshold(filterType, type, thresh) <= 0)
 		return exit_hal(_hidl_cb, thresh,
 		"Sensor Threshold read failure or type not supported.");

 	_hidl_cb(status, thresh);

 	return Void();
 }

 Return<void> Thermal::registerThermalChangedCallback(
 				const sp<IThermalChangedCallback> &callback,
 				bool filterType,
 				TemperatureType type,
 				registerThermalChangedCallback_cb _hidl_cb)
 {
 	ThermalStatus status;
 	std::lock_guard<std::mutex> _lock(thermal_cb_mutex);

         status.code = ThermalStatusCode::SUCCESS;
 	if (callback == nullptr)
 		return exit_hal(_hidl_cb, "Invalid nullptr callback");
 	if (type == TemperatureType::BCL_VOLTAGE ||
 		type == TemperatureType::BCL_CURRENT)
 		return exit_hal(_hidl_cb,
 			"BCL current and voltage notification not supported");

 	for (CallbackSetting _cb: cb) {
 		if (interfacesEqual(_cb.callback, callback))
 			return exit_hal(_hidl_cb,
 				"Same callback interface registered already");
 	}
 	cb.emplace_back(callback, filterType, type);
 	LOG(DEBUG) << "A callback has been registered to ThermalHAL, isFilter: " << filterType
 		<< " Type: " << android::hardware::thermal::V2_0::toString(type);

 	_hidl_cb(status);
 	return Void();
 }

 Return<void> Thermal::unregisterThermalChangedCallback(
 				const sp<IThermalChangedCallback> &callback,
 				unregisterThermalChangedCallback_cb _hidl_cb)
 {

 	ThermalStatus status;
 	bool removed = false;
 	std::lock_guard<std::mutex> _lock(thermal_cb_mutex);
 	std::vector<CallbackSetting>::iterator it;

         status.code = ThermalStatusCode::SUCCESS;
 	if (callback == nullptr)
 		return exit_hal(_hidl_cb, "Invalid nullptr callback");

 	for (it = cb.begin(); it != cb.end(); it++) {
 		if (interfacesEqual(it->callback, callback)) {
 			cb.erase(it);
 			LOG(DEBUG) << "callback unregistered. isFilter: "
 				<< it->is_filter_type << " Type: "
 				<< android::hardware::thermal::V2_0::toString(it->type);
 			removed = true;
 			break;
 		}
 	}
 	if (!removed)
 		return exit_hal(_hidl_cb, "The callback was not registered before");
 	_hidl_cb(status);
 	return Void();
 }

 void Thermal::sendThrottlingChangeCB(const Temperature &t)
 {
 	std::lock_guard<std::mutex> _lock(thermal_cb_mutex);
 	std::vector<CallbackSetting>::iterator it;

 	LOG(DEBUG) << "Throttle Severity change: " << " Type: " << (int)t.type
 		<< " Name: " << t.name << " Value: " << t.value <<
 		" ThrottlingStatus: " << (int)t.throttlingStatus;
 	it = cb.begin();
 	while (it != cb.end()) {
 		if (!it->is_filter_type || it->type == t.type) {
 			Return<void> ret = it->callback->notifyThrottling(t);
 			if (!ret.isOk()) {
 				LOG(ERROR) << "Notify callback execution error. Removing";
 				it = cb.erase(it);
 				continue;
 			}
 		}
 		it++;
 	}
 }

 }  // namespace implementation
 }  // namespace V2_0
 }  // namespace thermal
 }  // namespace hardware
 }  // namespace android
	/*
	* 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.
	*
	* Changes from Qualcomm Innovation Center are provided under the following license:
	* Copyright (c) 2022 Qualcomm Innovation Center, Inc. All rights reserved.
	*
	* Redistribution and use in source and binary forms, with or without
	* modification, are permitted (subject to the limitations in the
	* disclaimer below) 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 Qualcomm Innovation Center, Inc. nor the names of its
	* contributors may be used to endorse or promote products derived
	* from this software without specific prior written permission.
	*
	* NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE
	* GRANTED BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT
	* HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED
	* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
	* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
	* IN NO EVENT SHALL THE COPYRIGHT HOLDER 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.
	*/

	#include <ctype.h>
	#include <errno.h>
	#include <inttypes.h>
	#include <stdlib.h>
	#include <cerrno>
	#include <mutex>
	#include <string>

	#include <android-base/file.h>
	#include <android-base/logging.h>
	#include <hidl/HidlTransportSupport.h>

	#include "thermal.h"

	namespace android {
	namespace hardware {
	namespace thermal {
	namespace V2_0 {
	namespace implementation {

	using ::android::hardware::interfacesEqual;

	static const Temperature_1_0 dummy_temp_1_0 = {
	.type = TemperatureType_1_0::SKIN,
	.name = "test sensor",
	.currentValue = 30,
	.throttlingThreshold = 40,
	.shutdownThreshold = 60,
	.vrThrottlingThreshold = 40,
	};

	static const Temperature dummy_temp_2_0 = {
	.type = TemperatureType::SKIN,
	.name = "test sensor",
	.value = 25.0,
	.throttlingStatus = ThrottlingSeverity::NONE,
	};

	template <typename A, typename B>
	Return<void> exit_hal(A _cb, hidl_vec<B> _data, std::string_view _msg) {
	ThermalStatus _status;

	_status.code = ThermalStatusCode::FAILURE;
	_status.debugMessage = _msg.data();
	LOG(ERROR) << _msg;
	_cb(_status, _data);

	return Void();
	}

	template <typename A>
	Return<void> exit_hal(A _cb, std::string_view _msg) {
	ThermalStatus _status;

	_status.code = ThermalStatusCode::FAILURE;
	_status.debugMessage = _msg.data();
	LOG(ERROR) << _msg;
	_cb(_status);

	return Void();
	}

	Thermal::Thermal():
	utils(std::bind(&Thermal::sendThrottlingChangeCB, this,
	std::placeholders::_1))
	{ }

	Return<void> Thermal::getTemperatures(getTemperatures_cb _hidl_cb)
	{
	ThermalStatus status;
	hidl_vec<Temperature_1_0> temperatures;

	status.code = ThermalStatusCode::SUCCESS;
	if (!utils.isSensorInitialized()) {
	std::vector<Temperature_1_0> _temp = {dummy_temp_1_0};
	LOG(INFO) << "Returning Dummy Value" << std::endl;
	_hidl_cb(status, _temp);
	return Void();
	}

	if (utils.readTemperatures(temperatures) <= 0)
	return exit_hal(_hidl_cb, temperatures,
	"Sensor Temperature read failure.");

	_hidl_cb(status, temperatures);

	return Void();
	}

	Return<void> Thermal::getCpuUsages(getCpuUsages_cb _hidl_cb)
	{

	ThermalStatus status;
	hidl_vec<CpuUsage> cpu_usages;

	status.code = ThermalStatusCode::SUCCESS;
	if (utils.fetchCpuUsages(cpu_usages) <= 0)
	return exit_hal(_hidl_cb, cpu_usages,
	"CPU usage read failure.");

	_hidl_cb(status, cpu_usages);
	return Void();
	}

	Return<void> Thermal::getCoolingDevices(getCoolingDevices_cb _hidl_cb)
	{
	ThermalStatus status;
	hidl_vec<CoolingDevice_1_0> cdev;

	status.code = ThermalStatusCode::SUCCESS;
	/* V1 Cdev requires only Fan Support. */
	_hidl_cb(status, cdev);
	return Void();
	}

	Return<void> Thermal::getCurrentCoolingDevices(
	bool filterType,
	cdevType type,
	getCurrentCoolingDevices_cb _hidl_cb)
	{
	ThermalStatus status;
	hidl_vec<CoolingDevice> cdev;

	status.code = ThermalStatusCode::SUCCESS;
	if (!utils.isCdevInitialized())
	return exit_hal(_hidl_cb, cdev,
	"ThermalHAL not initialized properly.");
	if (utils.readCdevStates(filterType, type, cdev) <= 0)
	return exit_hal(_hidl_cb, cdev,
	"Failed to read thermal cooling devices.");

	_hidl_cb(status, cdev);
	return Void();
	}

	Return<void> Thermal::getCurrentTemperatures(
	bool filterType,
	TemperatureType type,
	getCurrentTemperatures_cb _hidl_cb)
	{
	ThermalStatus status;
	hidl_vec<Temperature> temperatures;

	status.code = ThermalStatusCode::SUCCESS;
	if (!utils.isSensorInitialized())
	return exit_hal(_hidl_cb, temperatures,
	"ThermalHAL not initialized properly.");

	if (utils.readTemperatures(filterType, type, temperatures) <= 0) {
	if (filterType && type != dummy_temp_2_0.type) {
	status.code = ThermalStatusCode::FAILURE;
	status.debugMessage = "Failed to read dummy temperature value";
	} else {
	temperatures = {dummy_temp_2_0};
	LOG(INFO) << "Returning Dummy Temperature Value" << std::endl;
	}
	}

	_hidl_cb(status, temperatures);

	return Void();
	}

	Return<void> Thermal::getTemperatureThresholds(
	bool filterType,
	TemperatureType type,
	getTemperatureThresholds_cb _hidl_cb)
	{
	ThermalStatus status;
	hidl_vec<TemperatureThreshold> thresh;

	status.code = ThermalStatusCode::SUCCESS;
	if (!utils.isSensorInitialized())
	return exit_hal(_hidl_cb, thresh,
	"ThermalHAL not initialized properly.");

	if (utils.readTemperatureThreshold(filterType, type, thresh) <= 0)
	return exit_hal(_hidl_cb, thresh,
	"Sensor Threshold read failure or type not supported.");

	_hidl_cb(status, thresh);

	return Void();
	}

	Return<void> Thermal::registerThermalChangedCallback(
	const sp<IThermalChangedCallback> &callback,
	bool filterType,
	TemperatureType type,
	registerThermalChangedCallback_cb _hidl_cb)
	{
	ThermalStatus status;
	std::lock_guard<std::mutex> _lock(thermal_cb_mutex);

	status.code = ThermalStatusCode::SUCCESS;
	if (callback == nullptr)
	return exit_hal(_hidl_cb, "Invalid nullptr callback");
	if (type == TemperatureType::BCL_VOLTAGE \|\|
	type == TemperatureType::BCL_CURRENT)
	return exit_hal(_hidl_cb,
	"BCL current and voltage notification not supported");

	for (CallbackSetting _cb: cb) {
	if (interfacesEqual(_cb.callback, callback))
	return exit_hal(_hidl_cb,
	"Same callback interface registered already");
	}
	cb.emplace_back(callback, filterType, type);
	LOG(DEBUG) << "A callback has been registered to ThermalHAL, isFilter: " << filterType
	<< " Type: " << android::hardware::thermal::V2_0::toString(type);

	_hidl_cb(status);
	return Void();
	}

	Return<void> Thermal::unregisterThermalChangedCallback(
	const sp<IThermalChangedCallback> &callback,
	unregisterThermalChangedCallback_cb _hidl_cb)
	{

	ThermalStatus status;
	bool removed = false;
	std::lock_guard<std::mutex> _lock(thermal_cb_mutex);
	std::vector<CallbackSetting>::iterator it;

	status.code = ThermalStatusCode::SUCCESS;
	if (callback == nullptr)
	return exit_hal(_hidl_cb, "Invalid nullptr callback");

	for (it = cb.begin(); it != cb.end(); it++) {
	if (interfacesEqual(it->callback, callback)) {
	cb.erase(it);
	LOG(DEBUG) << "callback unregistered. isFilter: "
	<< it->is_filter_type << " Type: "
	<< android::hardware::thermal::V2_0::toString(it->type);
	removed = true;
	break;
	}
	}
	if (!removed)
	return exit_hal(_hidl_cb, "The callback was not registered before");
	_hidl_cb(status);
	return Void();
	}

	void Thermal::sendThrottlingChangeCB(const Temperature &t)
	{
	std::lock_guard<std::mutex> _lock(thermal_cb_mutex);
	std::vector<CallbackSetting>::iterator it;

	LOG(DEBUG) << "Throttle Severity change: " << " Type: " << (int)t.type
	<< " Name: " << t.name << " Value: " << t.value <<
	" ThrottlingStatus: " << (int)t.throttlingStatus;
	it = cb.begin();
	while (it != cb.end()) {
	if (!it->is_filter_type \|\| it->type == t.type) {
	Return<void> ret = it->callback->notifyThrottling(t);
	if (!ret.isOk()) {
	LOG(ERROR) << "Notify callback execution error. Removing";
	it = cb.erase(it);
	continue;
	}
	}
	it++;
	}
	}

	} // namespace implementation
	} // namespace V2_0
	} // namespace thermal
	} // namespace hardware
	} // namespace android