551 lines
19 KiB
C++
551 lines
19 KiB
C++
/*
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* Copyright (C) 2013 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#define LOG_TAG "healthd"
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#include "healthd.h"
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#include "BatteryMonitor.h"
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#include <dirent.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <batteryservice/BatteryService.h>
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#include <cutils/klog.h>
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#include <cutils/properties.h>
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#include <sys/types.h>
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#include <utils/Errors.h>
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#include <utils/String8.h>
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#include <utils/Vector.h>
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#define POWER_SUPPLY_SUBSYSTEM "power_supply"
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#define POWER_SUPPLY_SYSFS_PATH "/sys/class/" POWER_SUPPLY_SUBSYSTEM
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#define FAKE_BATTERY_CAPACITY 42
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#define FAKE_BATTERY_TEMPERATURE 424
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namespace android {
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struct sysfsStringEnumMap {
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const char* s;
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int val;
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};
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static int mapSysfsString(const char* str,
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struct sysfsStringEnumMap map[]) {
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for (int i = 0; map[i].s; i++)
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if (!strcmp(str, map[i].s))
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return map[i].val;
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return -1;
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}
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int BatteryMonitor::getBatteryStatus(const char* status) {
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int ret;
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struct sysfsStringEnumMap batteryStatusMap[] = {
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{ "Unknown", BATTERY_STATUS_UNKNOWN },
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{ "Charging", BATTERY_STATUS_CHARGING },
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{ "Discharging", BATTERY_STATUS_DISCHARGING },
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{ "Not charging", BATTERY_STATUS_NOT_CHARGING },
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{ "Full", BATTERY_STATUS_FULL },
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{ NULL, 0 },
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};
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ret = mapSysfsString(status, batteryStatusMap);
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if (ret < 0) {
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KLOG_WARNING(LOG_TAG, "Unknown battery status '%s'\n", status);
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ret = BATTERY_STATUS_UNKNOWN;
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}
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return ret;
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}
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int BatteryMonitor::getBatteryHealth(const char* status) {
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int ret;
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struct sysfsStringEnumMap batteryHealthMap[] = {
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{ "Unknown", BATTERY_HEALTH_UNKNOWN },
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{ "Good", BATTERY_HEALTH_GOOD },
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{ "Overheat", BATTERY_HEALTH_OVERHEAT },
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{ "Dead", BATTERY_HEALTH_DEAD },
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{ "Over voltage", BATTERY_HEALTH_OVER_VOLTAGE },
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{ "Unspecified failure", BATTERY_HEALTH_UNSPECIFIED_FAILURE },
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{ "Cold", BATTERY_HEALTH_COLD },
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{ NULL, 0 },
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};
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ret = mapSysfsString(status, batteryHealthMap);
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if (ret < 0) {
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KLOG_WARNING(LOG_TAG, "Unknown battery health '%s'\n", status);
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ret = BATTERY_HEALTH_UNKNOWN;
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}
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return ret;
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}
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int BatteryMonitor::readFromFile(const String8& path, char* buf, size_t size) {
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char *cp = NULL;
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if (path.isEmpty())
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return -1;
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int fd = open(path.string(), O_RDONLY, 0);
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if (fd == -1) {
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KLOG_ERROR(LOG_TAG, "Could not open '%s'\n", path.string());
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return -1;
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}
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ssize_t count = TEMP_FAILURE_RETRY(read(fd, buf, size));
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if (count > 0)
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cp = (char *)memrchr(buf, '\n', count);
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if (cp)
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*cp = '\0';
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else
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buf[0] = '\0';
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close(fd);
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return count;
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}
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BatteryMonitor::PowerSupplyType BatteryMonitor::readPowerSupplyType(const String8& path) {
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const int SIZE = 128;
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char buf[SIZE];
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int length = readFromFile(path, buf, SIZE);
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BatteryMonitor::PowerSupplyType ret;
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struct sysfsStringEnumMap supplyTypeMap[] = {
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{ "Unknown", ANDROID_POWER_SUPPLY_TYPE_UNKNOWN },
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{ "Battery", ANDROID_POWER_SUPPLY_TYPE_BATTERY },
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{ "UPS", ANDROID_POWER_SUPPLY_TYPE_AC },
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{ "Mains", ANDROID_POWER_SUPPLY_TYPE_AC },
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{ "USB", ANDROID_POWER_SUPPLY_TYPE_USB },
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{ "USB_DCP", ANDROID_POWER_SUPPLY_TYPE_AC },
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{ "USB_CDP", ANDROID_POWER_SUPPLY_TYPE_AC },
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{ "USB_ACA", ANDROID_POWER_SUPPLY_TYPE_AC },
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{ "Wireless", ANDROID_POWER_SUPPLY_TYPE_WIRELESS },
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{ NULL, 0 },
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};
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if (length <= 0)
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return ANDROID_POWER_SUPPLY_TYPE_UNKNOWN;
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ret = (BatteryMonitor::PowerSupplyType)mapSysfsString(buf, supplyTypeMap);
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if (ret < 0)
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ret = ANDROID_POWER_SUPPLY_TYPE_UNKNOWN;
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return ret;
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}
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bool BatteryMonitor::getBooleanField(const String8& path) {
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const int SIZE = 16;
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char buf[SIZE];
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bool value = false;
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if (readFromFile(path, buf, SIZE) > 0) {
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if (buf[0] != '0') {
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value = true;
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}
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}
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return value;
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}
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int BatteryMonitor::getIntField(const String8& path) {
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const int SIZE = 128;
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char buf[SIZE];
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int value = 0;
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if (readFromFile(path, buf, SIZE) > 0) {
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value = strtol(buf, NULL, 0);
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}
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return value;
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}
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bool BatteryMonitor::update(void) {
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bool logthis;
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props.chargerAcOnline = false;
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props.chargerUsbOnline = false;
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props.chargerWirelessOnline = false;
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props.batteryStatus = BATTERY_STATUS_UNKNOWN;
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props.batteryHealth = BATTERY_HEALTH_UNKNOWN;
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props.maxChargingCurrent = 0;
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if (!mHealthdConfig->batteryPresentPath.isEmpty())
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props.batteryPresent = getBooleanField(mHealthdConfig->batteryPresentPath);
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else
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props.batteryPresent = mBatteryDevicePresent;
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props.batteryLevel = mBatteryFixedCapacity ?
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mBatteryFixedCapacity :
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getIntField(mHealthdConfig->batteryCapacityPath);
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props.batteryVoltage = getIntField(mHealthdConfig->batteryVoltagePath) / 1000;
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props.batteryTemperature = mBatteryFixedTemperature ?
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mBatteryFixedTemperature :
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getIntField(mHealthdConfig->batteryTemperaturePath);
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const int SIZE = 128;
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char buf[SIZE];
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String8 btech;
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if (readFromFile(mHealthdConfig->batteryStatusPath, buf, SIZE) > 0)
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props.batteryStatus = getBatteryStatus(buf);
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if (readFromFile(mHealthdConfig->batteryHealthPath, buf, SIZE) > 0)
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props.batteryHealth = getBatteryHealth(buf);
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if (readFromFile(mHealthdConfig->batteryTechnologyPath, buf, SIZE) > 0)
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props.batteryTechnology = String8(buf);
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unsigned int i;
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for (i = 0; i < mChargerNames.size(); i++) {
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String8 path;
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path.appendFormat("%s/%s/online", POWER_SUPPLY_SYSFS_PATH,
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mChargerNames[i].string());
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if (readFromFile(path, buf, SIZE) > 0) {
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if (buf[0] != '0') {
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path.clear();
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path.appendFormat("%s/%s/type", POWER_SUPPLY_SYSFS_PATH,
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mChargerNames[i].string());
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switch(readPowerSupplyType(path)) {
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case ANDROID_POWER_SUPPLY_TYPE_AC:
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props.chargerAcOnline = true;
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break;
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case ANDROID_POWER_SUPPLY_TYPE_USB:
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props.chargerUsbOnline = true;
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break;
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case ANDROID_POWER_SUPPLY_TYPE_WIRELESS:
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props.chargerWirelessOnline = true;
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break;
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default:
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KLOG_WARNING(LOG_TAG, "%s: Unknown power supply type\n",
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mChargerNames[i].string());
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}
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path.clear();
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path.appendFormat("%s/%s/current_max", POWER_SUPPLY_SYSFS_PATH,
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mChargerNames[i].string());
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if (access(path.string(), R_OK) == 0) {
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int maxChargingCurrent = getIntField(path);
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if (props.maxChargingCurrent < maxChargingCurrent) {
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props.maxChargingCurrent = maxChargingCurrent;
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}
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}
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}
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}
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}
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logthis = !healthd_board_battery_update(&props);
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if (logthis) {
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char dmesgline[256];
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if (props.batteryPresent) {
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snprintf(dmesgline, sizeof(dmesgline),
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"battery l=%d v=%d t=%s%d.%d h=%d st=%d",
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props.batteryLevel, props.batteryVoltage,
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props.batteryTemperature < 0 ? "-" : "",
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abs(props.batteryTemperature / 10),
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abs(props.batteryTemperature % 10), props.batteryHealth,
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props.batteryStatus);
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if (!mHealthdConfig->batteryCurrentNowPath.isEmpty()) {
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int c = getIntField(mHealthdConfig->batteryCurrentNowPath);
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char b[20];
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snprintf(b, sizeof(b), " c=%d", c / 1000);
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strlcat(dmesgline, b, sizeof(dmesgline));
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}
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} else {
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snprintf(dmesgline, sizeof(dmesgline),
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"battery none");
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}
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KLOG_WARNING(LOG_TAG, "%s chg=%s%s%s\n", dmesgline,
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props.chargerAcOnline ? "a" : "",
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props.chargerUsbOnline ? "u" : "",
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props.chargerWirelessOnline ? "w" : "");
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}
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healthd_mode_ops->battery_update(&props);
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return props.chargerAcOnline | props.chargerUsbOnline |
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props.chargerWirelessOnline;
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}
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status_t BatteryMonitor::getProperty(int id, struct BatteryProperty *val) {
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status_t ret = BAD_VALUE;
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val->valueInt64 = LONG_MIN;
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switch(id) {
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case BATTERY_PROP_CHARGE_COUNTER:
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if (!mHealthdConfig->batteryChargeCounterPath.isEmpty()) {
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val->valueInt64 =
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getIntField(mHealthdConfig->batteryChargeCounterPath);
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ret = NO_ERROR;
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} else {
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ret = NAME_NOT_FOUND;
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}
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break;
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case BATTERY_PROP_CURRENT_NOW:
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if (!mHealthdConfig->batteryCurrentNowPath.isEmpty()) {
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val->valueInt64 =
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getIntField(mHealthdConfig->batteryCurrentNowPath);
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ret = NO_ERROR;
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} else {
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ret = NAME_NOT_FOUND;
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}
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break;
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case BATTERY_PROP_CURRENT_AVG:
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if (!mHealthdConfig->batteryCurrentAvgPath.isEmpty()) {
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val->valueInt64 =
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getIntField(mHealthdConfig->batteryCurrentAvgPath);
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ret = NO_ERROR;
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} else {
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ret = NAME_NOT_FOUND;
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}
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break;
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case BATTERY_PROP_CAPACITY:
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if (!mHealthdConfig->batteryCapacityPath.isEmpty()) {
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val->valueInt64 =
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getIntField(mHealthdConfig->batteryCapacityPath);
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ret = NO_ERROR;
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} else {
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ret = NAME_NOT_FOUND;
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}
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break;
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case BATTERY_PROP_ENERGY_COUNTER:
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if (mHealthdConfig->energyCounter) {
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ret = mHealthdConfig->energyCounter(&val->valueInt64);
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} else {
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ret = NAME_NOT_FOUND;
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}
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break;
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default:
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break;
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}
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return ret;
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}
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void BatteryMonitor::dumpState(int fd) {
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int v;
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char vs[128];
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snprintf(vs, sizeof(vs), "ac: %d usb: %d wireless: %d current_max: %d\n",
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props.chargerAcOnline, props.chargerUsbOnline,
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props.chargerWirelessOnline, props.maxChargingCurrent);
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write(fd, vs, strlen(vs));
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snprintf(vs, sizeof(vs), "status: %d health: %d present: %d\n",
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props.batteryStatus, props.batteryHealth, props.batteryPresent);
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write(fd, vs, strlen(vs));
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snprintf(vs, sizeof(vs), "level: %d voltage: %d temp: %d\n",
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props.batteryLevel, props.batteryVoltage,
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props.batteryTemperature);
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write(fd, vs, strlen(vs));
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if (!mHealthdConfig->batteryCurrentNowPath.isEmpty()) {
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v = getIntField(mHealthdConfig->batteryCurrentNowPath);
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snprintf(vs, sizeof(vs), "current now: %d\n", v);
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write(fd, vs, strlen(vs));
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}
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if (!mHealthdConfig->batteryCurrentAvgPath.isEmpty()) {
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v = getIntField(mHealthdConfig->batteryCurrentAvgPath);
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snprintf(vs, sizeof(vs), "current avg: %d\n", v);
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write(fd, vs, strlen(vs));
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}
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if (!mHealthdConfig->batteryChargeCounterPath.isEmpty()) {
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v = getIntField(mHealthdConfig->batteryChargeCounterPath);
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snprintf(vs, sizeof(vs), "charge counter: %d\n", v);
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write(fd, vs, strlen(vs));
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}
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}
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void BatteryMonitor::init(struct healthd_config *hc) {
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String8 path;
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char pval[PROPERTY_VALUE_MAX];
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mHealthdConfig = hc;
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DIR* dir = opendir(POWER_SUPPLY_SYSFS_PATH);
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if (dir == NULL) {
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KLOG_ERROR(LOG_TAG, "Could not open %s\n", POWER_SUPPLY_SYSFS_PATH);
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} else {
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struct dirent* entry;
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while ((entry = readdir(dir))) {
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const char* name = entry->d_name;
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if (!strcmp(name, ".") || !strcmp(name, ".."))
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continue;
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// Look for "type" file in each subdirectory
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path.clear();
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path.appendFormat("%s/%s/type", POWER_SUPPLY_SYSFS_PATH, name);
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switch(readPowerSupplyType(path)) {
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case ANDROID_POWER_SUPPLY_TYPE_AC:
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case ANDROID_POWER_SUPPLY_TYPE_USB:
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case ANDROID_POWER_SUPPLY_TYPE_WIRELESS:
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path.clear();
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path.appendFormat("%s/%s/online", POWER_SUPPLY_SYSFS_PATH, name);
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if (access(path.string(), R_OK) == 0)
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mChargerNames.add(String8(name));
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break;
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case ANDROID_POWER_SUPPLY_TYPE_BATTERY:
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mBatteryDevicePresent = true;
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if (mHealthdConfig->batteryStatusPath.isEmpty()) {
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path.clear();
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path.appendFormat("%s/%s/status", POWER_SUPPLY_SYSFS_PATH,
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name);
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if (access(path, R_OK) == 0)
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mHealthdConfig->batteryStatusPath = path;
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}
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if (mHealthdConfig->batteryHealthPath.isEmpty()) {
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path.clear();
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path.appendFormat("%s/%s/health", POWER_SUPPLY_SYSFS_PATH,
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name);
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if (access(path, R_OK) == 0)
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mHealthdConfig->batteryHealthPath = path;
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}
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if (mHealthdConfig->batteryPresentPath.isEmpty()) {
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path.clear();
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path.appendFormat("%s/%s/present", POWER_SUPPLY_SYSFS_PATH,
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name);
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if (access(path, R_OK) == 0)
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mHealthdConfig->batteryPresentPath = path;
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}
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if (mHealthdConfig->batteryCapacityPath.isEmpty()) {
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path.clear();
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path.appendFormat("%s/%s/capacity", POWER_SUPPLY_SYSFS_PATH,
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name);
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if (access(path, R_OK) == 0)
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mHealthdConfig->batteryCapacityPath = path;
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}
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if (mHealthdConfig->batteryVoltagePath.isEmpty()) {
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path.clear();
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path.appendFormat("%s/%s/voltage_now",
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POWER_SUPPLY_SYSFS_PATH, name);
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if (access(path, R_OK) == 0) {
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mHealthdConfig->batteryVoltagePath = path;
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} else {
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path.clear();
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path.appendFormat("%s/%s/batt_vol",
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POWER_SUPPLY_SYSFS_PATH, name);
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if (access(path, R_OK) == 0)
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mHealthdConfig->batteryVoltagePath = path;
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}
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}
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if (mHealthdConfig->batteryCurrentNowPath.isEmpty()) {
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path.clear();
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path.appendFormat("%s/%s/current_now",
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POWER_SUPPLY_SYSFS_PATH, name);
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if (access(path, R_OK) == 0)
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mHealthdConfig->batteryCurrentNowPath = path;
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}
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if (mHealthdConfig->batteryCurrentAvgPath.isEmpty()) {
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path.clear();
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path.appendFormat("%s/%s/current_avg",
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POWER_SUPPLY_SYSFS_PATH, name);
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if (access(path, R_OK) == 0)
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mHealthdConfig->batteryCurrentAvgPath = path;
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}
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if (mHealthdConfig->batteryChargeCounterPath.isEmpty()) {
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path.clear();
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path.appendFormat("%s/%s/charge_counter",
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POWER_SUPPLY_SYSFS_PATH, name);
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if (access(path, R_OK) == 0)
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mHealthdConfig->batteryChargeCounterPath = path;
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}
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if (mHealthdConfig->batteryTemperaturePath.isEmpty()) {
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path.clear();
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path.appendFormat("%s/%s/temp", POWER_SUPPLY_SYSFS_PATH,
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name);
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if (access(path, R_OK) == 0) {
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mHealthdConfig->batteryTemperaturePath = path;
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} else {
|
|
path.clear();
|
|
path.appendFormat("%s/%s/batt_temp",
|
|
POWER_SUPPLY_SYSFS_PATH, name);
|
|
if (access(path, R_OK) == 0)
|
|
mHealthdConfig->batteryTemperaturePath = path;
|
|
}
|
|
}
|
|
|
|
if (mHealthdConfig->batteryTechnologyPath.isEmpty()) {
|
|
path.clear();
|
|
path.appendFormat("%s/%s/technology",
|
|
POWER_SUPPLY_SYSFS_PATH, name);
|
|
if (access(path, R_OK) == 0)
|
|
mHealthdConfig->batteryTechnologyPath = path;
|
|
}
|
|
|
|
break;
|
|
|
|
case ANDROID_POWER_SUPPLY_TYPE_UNKNOWN:
|
|
break;
|
|
}
|
|
}
|
|
closedir(dir);
|
|
}
|
|
|
|
if (!mChargerNames.size())
|
|
KLOG_ERROR(LOG_TAG, "No charger supplies found\n");
|
|
if (!mBatteryDevicePresent) {
|
|
KLOG_WARNING(LOG_TAG, "No battery devices found\n");
|
|
hc->periodic_chores_interval_fast = -1;
|
|
hc->periodic_chores_interval_slow = -1;
|
|
} else {
|
|
if (mHealthdConfig->batteryStatusPath.isEmpty())
|
|
KLOG_WARNING(LOG_TAG, "BatteryStatusPath not found\n");
|
|
if (mHealthdConfig->batteryHealthPath.isEmpty())
|
|
KLOG_WARNING(LOG_TAG, "BatteryHealthPath not found\n");
|
|
if (mHealthdConfig->batteryPresentPath.isEmpty())
|
|
KLOG_WARNING(LOG_TAG, "BatteryPresentPath not found\n");
|
|
if (mHealthdConfig->batteryCapacityPath.isEmpty())
|
|
KLOG_WARNING(LOG_TAG, "BatteryCapacityPath not found\n");
|
|
if (mHealthdConfig->batteryVoltagePath.isEmpty())
|
|
KLOG_WARNING(LOG_TAG, "BatteryVoltagePath not found\n");
|
|
if (mHealthdConfig->batteryTemperaturePath.isEmpty())
|
|
KLOG_WARNING(LOG_TAG, "BatteryTemperaturePath not found\n");
|
|
if (mHealthdConfig->batteryTechnologyPath.isEmpty())
|
|
KLOG_WARNING(LOG_TAG, "BatteryTechnologyPath not found\n");
|
|
}
|
|
|
|
if (property_get("ro.boot.fake_battery", pval, NULL) > 0
|
|
&& strtol(pval, NULL, 10) != 0) {
|
|
mBatteryFixedCapacity = FAKE_BATTERY_CAPACITY;
|
|
mBatteryFixedTemperature = FAKE_BATTERY_TEMPERATURE;
|
|
}
|
|
}
|
|
|
|
}; // namespace android
|