thermal-hal: Add support for new thermal HAl v2 binary

Add support for new thermal HAL v2 binary, which can listen to the thermal
framework netlink messages instead of the uevents sent by the userspace
governor. This new binary should be selected only for the kernel version
supporting the new netlink messages in thermal framework.

Change-Id: I31cdb93fb73d59ff3eb94eb76d6e42b3448c3ee9

1 files changed, 232 insertions, 0 deletions

diff --git a/thermalUtilsNetlink.cpp b/thermalUtilsNetlink.cpp
new file mode 100644
index 0000000..b02f584
--- /dev/null
+++ b/thermalUtilsNetlink.cpp
@@ -0,0 +1,232 @@
+/*
+ * Copyright (c) 2021, 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.
+ */
+
+#include <android-base/file.h>
+#include <android-base/logging.h>
+#include <android-base/properties.h>
+#include <android-base/stringprintf.h>
+#include <android-base/strings.h>
+#include <hidl/HidlTransportSupport.h>
+
+#include "thermalConfig.h"
+#include "thermalUtilsNetlink.h"
+
+namespace android {
+namespace hardware {
+namespace thermal {
+namespace V2_0 {
+namespace implementation {
+
+ThermalUtils::ThermalUtils(const ueventCB &inp_cb):
+	cfg(),
+	cmnInst(),
+	monitor(std::bind(&ThermalUtils::eventParse, this,
+				std::placeholders::_1,
+				std::placeholders::_2),
+		std::bind(&ThermalUtils::sampleParse, this,
+				std::placeholders::_1,
+				std::placeholders::_2)),
+	cb(inp_cb)
+{
+	int ret = 0;
+	std::vector<struct therm_sensor> sensorList;
+	std::vector<struct target_therm_cfg> therm_cfg = cfg.fetchConfig();
+
+	is_sensor_init = false;
+	is_cdev_init = false;
+	ret = cmnInst.initThermalZones(therm_cfg);
+	if (ret > 0) {
+		is_sensor_init = true;
+		sensorList = cmnInst.fetch_sensor_list();
+		std::lock_guard<std::mutex> _lock(sens_cb_mutex);
+		for (struct therm_sensor sens: sensorList) {
+			thermalConfig[sens.tzn] = sens;
+			cmnInst.read_temperature(sens);
+			cmnInst.estimateSeverity(sens);
+			cmnInst.initThreshold(sens);
+		}
+		monitor.start();
+	}
+	ret = cmnInst.initCdev();
+	if (ret > 0) {
+		is_cdev_init = true;
+		cdevList = cmnInst.fetch_cdev_list();
+	}
+}
+
+void ThermalUtils::Notify(struct therm_sensor& sens)
+{
+	int severity = cmnInst.estimateSeverity(sens);
+	if (severity != -1) {
+		LOG(INFO) << "sensor: " << sens.sensor_name <<" temperature: "
+			<< sens.t.value << " old: " <<
+			(int)sens.lastThrottleStatus << " new: " <<
+			(int)sens.t.throttlingStatus << std::endl;
+		cb(sens.t);
+		cmnInst.initThreshold(sens);
+	}
+}
+
+void ThermalUtils::eventParse(int tzn, int trip)
+{
+	if (trip != 1)
+		return;
+	if (thermalConfig.find(tzn) == thermalConfig.end()) {
+		LOG(DEBUG) << "sensor is not monitored:" << tzn
+			<< std::endl;
+		return;
+	}
+	std::lock_guard<std::mutex> _lock(sens_cb_mutex);
+	struct therm_sensor& sens = thermalConfig[tzn];
+	return Notify(sens);
+}
+
+void ThermalUtils::sampleParse(int tzn, int temp)
+{
+	if (thermalConfig.find(tzn) == thermalConfig.end()) {
+		LOG(DEBUG) << "sensor is not monitored:" << tzn
+			<< std::endl;
+		return;
+	}
+	std::lock_guard<std::mutex> _lock(sens_cb_mutex);
+	struct therm_sensor& sens = thermalConfig[tzn];
+	sens.t.value = (float)temp / (float)sens.mulFactor;
+	return;
+}
+
+int ThermalUtils::readTemperatures(hidl_vec<Temperature_1_0>& temp)
+{
+	std::unordered_map<int, struct therm_sensor>::iterator it;
+	int ret = 0, idx = 0;
+	std::vector<Temperature_1_0> _temp_v;
+
+	if (!is_sensor_init)
+		return 0;
+	std::lock_guard<std::mutex> _lock(sens_cb_mutex);
+	for (it = thermalConfig.begin(); it != thermalConfig.end();
+			it++, idx++) {
+		struct therm_sensor& sens = it->second;
+		Temperature_1_0 _temp;
+
+		/* v1 supports only CPU, GPU, Battery and SKIN */
+		if (sens.t.type > TemperatureType::SKIN)
+			continue;
+		ret = cmnInst.read_temperature(sens);
+		if (ret < 0)
+			return ret;
+		Notify(sens);
+		_temp.currentValue = sens.t.value;
+		_temp.name = sens.t.name;
+		_temp.type = (TemperatureType_1_0)sens.t.type;
+		_temp.throttlingThreshold = sens.thresh.hotThrottlingThresholds[
+					(size_t)ThrottlingSeverity::SEVERE];
+		_temp.shutdownThreshold = sens.thresh.hotThrottlingThresholds[
+					(size_t)ThrottlingSeverity::SHUTDOWN];
+		_temp.vrThrottlingThreshold = sens.thresh.vrThrottlingThreshold;
+		_temp_v.push_back(_temp);
+	}
+
+	temp = _temp_v;
+	return temp.size();
+}
+
+int ThermalUtils::readTemperatures(bool filterType, TemperatureType type,
+                                            hidl_vec<Temperature>& temp)
+{
+	std::unordered_map<int, struct therm_sensor>::iterator it;
+	int ret = 0;
+	std::vector<Temperature> _temp;
+
+	std::lock_guard<std::mutex> _lock(sens_cb_mutex);
+	for (it = thermalConfig.begin(); it != thermalConfig.end(); it++) {
+		struct therm_sensor& sens = it->second;
+
+		if (filterType && sens.t.type != type)
+			continue;
+		ret = cmnInst.read_temperature(sens);
+		if (ret < 0)
+			return ret;
+		Notify(sens);
+		_temp.push_back(sens.t);
+	}
+
+	temp = _temp;
+	return temp.size();
+}
+
+int ThermalUtils::readTemperatureThreshold(bool filterType, TemperatureType type,
+                                            hidl_vec<TemperatureThreshold>& thresh)
+{
+	std::unordered_map<int, struct therm_sensor>::iterator it;
+	std::vector<TemperatureThreshold> _thresh;
+
+	for (it = thermalConfig.begin(); it != thermalConfig.end(); it++) {
+		struct therm_sensor& sens = it->second;
+
+		if (filterType && sens.t.type != type)
+			continue;
+		_thresh.push_back(sens.thresh);
+	}
+
+	thresh = _thresh;
+	return thresh.size();
+}
+
+int ThermalUtils::readCdevStates(bool filterType, cdevType type,
+                                            hidl_vec<CoolingDevice>& cdev_out)
+{
+	int ret = 0;
+	std::vector<CoolingDevice> _cdev;
+
+	for (struct therm_cdev cdev: cdevList) {
+
+		if (filterType && cdev.c.type != type)
+			continue;
+		ret = cmnInst.read_cdev_state(cdev);
+		if (ret < 0)
+			return ret;
+		_cdev.push_back(cdev.c);
+	}
+
+	cdev_out = _cdev;
+
+	return cdev_out.size();
+}
+
+int ThermalUtils::fetchCpuUsages(hidl_vec<CpuUsage>& cpu_usages)
+{
+	return cmnInst.get_cpu_usages(cpu_usages);
+}
+
+}  // namespace implementation
+}  // namespace V2_0
+}  // namespace thermal
+}  // namespace hardware
+}  // namespace android