/* * Copyright (C) 2013 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. */ #define LOG_TAG "healthd" #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #define POWER_SUPPLY_SUBSYSTEM "power_supply" #define POWER_SUPPLY_SYSFS_PATH "/sys/class/" POWER_SUPPLY_SUBSYSTEM #define FAKE_BATTERY_CAPACITY 42 #define FAKE_BATTERY_TEMPERATURE 424 #define MILLION 1.0e6 #define DEFAULT_VBUS_VOLTAGE 5000000 using HealthInfo_1_0 = android::hardware::health::V1_0::HealthInfo; using HealthInfo_2_0 = android::hardware::health::V2_0::HealthInfo; using HealthInfo_2_1 = android::hardware::health::V2_1::HealthInfo; using aidl::android::hardware::health::BatteryCapacityLevel; using aidl::android::hardware::health::BatteryChargingPolicy; using aidl::android::hardware::health::BatteryChargingState; using aidl::android::hardware::health::BatteryHealth; using aidl::android::hardware::health::BatteryHealthData; using aidl::android::hardware::health::BatteryStatus; using aidl::android::hardware::health::HealthInfo; namespace { // Translate from AIDL back to HIDL definition for getHealthInfo_*_* calls. // Skips storageInfo and diskStats. void translateToHidl(const ::aidl::android::hardware::health::HealthInfo& in, ::android::hardware::health::V1_0::HealthInfo* out) { out->chargerAcOnline = in.chargerAcOnline; out->chargerUsbOnline = in.chargerUsbOnline; out->chargerWirelessOnline = in.chargerWirelessOnline; out->maxChargingCurrent = in.maxChargingCurrentMicroamps; out->maxChargingVoltage = in.maxChargingVoltageMicrovolts; out->batteryStatus = static_cast<::android::hardware::health::V1_0::BatteryStatus>(in.batteryStatus); out->batteryHealth = static_cast<::android::hardware::health::V1_0::BatteryHealth>(in.batteryHealth); out->batteryPresent = in.batteryPresent; out->batteryLevel = in.batteryLevel; out->batteryVoltage = in.batteryVoltageMillivolts; out->batteryTemperature = in.batteryTemperatureTenthsCelsius; out->batteryCurrent = in.batteryCurrentMicroamps; out->batteryCycleCount = in.batteryCycleCount; out->batteryFullCharge = in.batteryFullChargeUah; out->batteryChargeCounter = in.batteryChargeCounterUah; out->batteryTechnology = in.batteryTechnology; } void translateToHidl(const ::aidl::android::hardware::health::HealthInfo& in, ::android::hardware::health::V2_0::HealthInfo* out) { translateToHidl(in, &out->legacy); out->batteryCurrentAverage = in.batteryCurrentAverageMicroamps; // Skip storageInfo and diskStats } void translateToHidl(const ::aidl::android::hardware::health::HealthInfo& in, ::android::hardware::health::V2_1::HealthInfo* out) { translateToHidl(in, &out->legacy); out->batteryCapacityLevel = static_cast( in.batteryCapacityLevel); out->batteryChargeTimeToFullNowSeconds = in.batteryChargeTimeToFullNowSeconds; out->batteryFullChargeDesignCapacityUah = in.batteryFullChargeDesignCapacityUah; } } // namespace namespace android { template struct SysfsStringEnumMap { const char* s; T val; }; template static std::optional mapSysfsString(const char* str, SysfsStringEnumMap map[]) { for (int i = 0; map[i].s; i++) if (!strcmp(str, map[i].s)) return map[i].val; return std::nullopt; } static void initHealthInfo(HealthInfo* health_info) { *health_info = { .batteryCapacityLevel = BatteryCapacityLevel::UNSUPPORTED, .batteryChargeTimeToFullNowSeconds = (int64_t)HealthInfo::BATTERY_CHARGE_TIME_TO_FULL_NOW_SECONDS_UNSUPPORTED, .batteryStatus = BatteryStatus::UNKNOWN, .batteryHealth = BatteryHealth::UNKNOWN, }; } BatteryMonitor::BatteryMonitor() : mHealthdConfig(nullptr), mBatteryDevicePresent(false), mBatteryFixedCapacity(0), mBatteryFixedTemperature(0), mHealthInfo(std::make_unique()) { initHealthInfo(mHealthInfo.get()); } BatteryMonitor::~BatteryMonitor() {} HealthInfo_1_0 BatteryMonitor::getHealthInfo_1_0() const { HealthInfo_1_0 health_info_1_0; translateToHidl(*mHealthInfo, &health_info_1_0); return health_info_1_0; } HealthInfo_2_0 BatteryMonitor::getHealthInfo_2_0() const { HealthInfo_2_0 health_info_2_0; translateToHidl(*mHealthInfo, &health_info_2_0); return health_info_2_0; } HealthInfo_2_1 BatteryMonitor::getHealthInfo_2_1() const { HealthInfo_2_1 health_info_2_1; translateToHidl(*mHealthInfo, &health_info_2_1); return health_info_2_1; } const HealthInfo& BatteryMonitor::getHealthInfo() const { return *mHealthInfo; } BatteryStatus getBatteryStatus(const char* status) { static SysfsStringEnumMap batteryStatusMap[] = { {"Unknown", BatteryStatus::UNKNOWN}, {"Charging", BatteryStatus::CHARGING}, {"Discharging", BatteryStatus::DISCHARGING}, {"Not charging", BatteryStatus::NOT_CHARGING}, {"Full", BatteryStatus::FULL}, {NULL, BatteryStatus::UNKNOWN}, }; auto ret = mapSysfsString(status, batteryStatusMap); if (!ret) { KLOG_WARNING(LOG_TAG, "Unknown battery status '%s'\n", status); *ret = BatteryStatus::UNKNOWN; } return *ret; } BatteryCapacityLevel getBatteryCapacityLevel(const char* capacityLevel) { static SysfsStringEnumMap batteryCapacityLevelMap[] = { {"Unknown", BatteryCapacityLevel::UNKNOWN}, {"Critical", BatteryCapacityLevel::CRITICAL}, {"Low", BatteryCapacityLevel::LOW}, {"Normal", BatteryCapacityLevel::NORMAL}, {"High", BatteryCapacityLevel::HIGH}, {"Full", BatteryCapacityLevel::FULL}, {NULL, BatteryCapacityLevel::UNSUPPORTED}, }; auto ret = mapSysfsString(capacityLevel, batteryCapacityLevelMap); if (!ret) { KLOG_WARNING(LOG_TAG, "Unsupported battery capacity level '%s'\n", capacityLevel); *ret = BatteryCapacityLevel::UNSUPPORTED; } return *ret; } BatteryHealth getBatteryHealth(const char* status) { static SysfsStringEnumMap batteryHealthMap[] = { {"Unknown", BatteryHealth::UNKNOWN}, {"Good", BatteryHealth::GOOD}, {"Overheat", BatteryHealth::OVERHEAT}, {"Dead", BatteryHealth::DEAD}, {"Over voltage", BatteryHealth::OVER_VOLTAGE}, {"Unspecified failure", BatteryHealth::UNSPECIFIED_FAILURE}, {"Cold", BatteryHealth::COLD}, // battery health values from JEITA spec {"Warm", BatteryHealth::GOOD}, {"Cool", BatteryHealth::GOOD}, {"Hot", BatteryHealth::OVERHEAT}, {NULL, BatteryHealth::UNKNOWN}, }; auto ret = mapSysfsString(status, batteryHealthMap); if (!ret) { KLOG_WARNING(LOG_TAG, "Unknown battery health '%s'\n", status); *ret = BatteryHealth::UNKNOWN; } return *ret; } BatteryChargingPolicy getBatteryChargingPolicy(const char* chargingPolicy) { static SysfsStringEnumMap batteryChargingPolicyMap[] = { {"0", BatteryChargingPolicy::INVALID}, {"1", BatteryChargingPolicy::DEFAULT}, {"2", BatteryChargingPolicy::LONG_LIFE}, {"3", BatteryChargingPolicy::ADAPTIVE}, {NULL, BatteryChargingPolicy::DEFAULT}, }; auto ret = mapSysfsString(chargingPolicy, batteryChargingPolicyMap); if (!ret) { *ret = BatteryChargingPolicy::DEFAULT; } return *ret; } BatteryChargingState getBatteryChargingState(const char* chargingState) { static SysfsStringEnumMap batteryChargingStateMap[] = { {"0", BatteryChargingState::INVALID}, {"1", BatteryChargingState::NORMAL}, {"2", BatteryChargingState::TOO_COLD}, {"3", BatteryChargingState::TOO_HOT}, {"4", BatteryChargingState::LONG_LIFE}, {"5", BatteryChargingState::ADAPTIVE}, {NULL, BatteryChargingState::NORMAL}, }; auto ret = mapSysfsString(chargingState, batteryChargingStateMap); if (!ret) { *ret = BatteryChargingState::NORMAL; } return *ret; } static int readFromFile(const String8& path, std::string* buf) { buf->clear(); if (android::base::ReadFileToString(path.c_str(), buf)) { *buf = android::base::Trim(*buf); } return buf->length(); } static bool writeToFile(const String8& path, int32_t in_value) { return android::base::WriteStringToFile(std::to_string(in_value), path.c_str()); } static BatteryMonitor::PowerSupplyType readPowerSupplyType(const String8& path) { static SysfsStringEnumMap supplyTypeMap[] = { {"Unknown", BatteryMonitor::ANDROID_POWER_SUPPLY_TYPE_UNKNOWN}, {"Battery", BatteryMonitor::ANDROID_POWER_SUPPLY_TYPE_BATTERY}, {"UPS", BatteryMonitor::ANDROID_POWER_SUPPLY_TYPE_AC}, {"Mains", BatteryMonitor::ANDROID_POWER_SUPPLY_TYPE_AC}, {"USB", BatteryMonitor::ANDROID_POWER_SUPPLY_TYPE_USB}, {"USB_DCP", BatteryMonitor::ANDROID_POWER_SUPPLY_TYPE_AC}, {"USB_HVDCP", BatteryMonitor::ANDROID_POWER_SUPPLY_TYPE_AC}, {"USB_CDP", BatteryMonitor::ANDROID_POWER_SUPPLY_TYPE_AC}, {"USB_ACA", BatteryMonitor::ANDROID_POWER_SUPPLY_TYPE_AC}, {"USB_C", BatteryMonitor::ANDROID_POWER_SUPPLY_TYPE_AC}, {"USB_PD", BatteryMonitor::ANDROID_POWER_SUPPLY_TYPE_AC}, {"USB_PD_DRP", BatteryMonitor::ANDROID_POWER_SUPPLY_TYPE_USB}, {"Wireless", BatteryMonitor::ANDROID_POWER_SUPPLY_TYPE_WIRELESS}, {"Dock", BatteryMonitor::ANDROID_POWER_SUPPLY_TYPE_DOCK}, {NULL, 0}, }; std::string buf; if (readFromFile(path, &buf) <= 0) { return BatteryMonitor::ANDROID_POWER_SUPPLY_TYPE_UNKNOWN; } auto ret = mapSysfsString(buf.c_str(), supplyTypeMap); if (!ret) { KLOG_WARNING(LOG_TAG, "Unknown power supply type '%s'\n", buf.c_str()); *ret = BatteryMonitor::ANDROID_POWER_SUPPLY_TYPE_UNKNOWN; } return static_cast(*ret); } static bool getBooleanField(const String8& path) { std::string buf; bool value = false; if (readFromFile(path, &buf) > 0) if (buf[0] != '0') value = true; return value; } static int getIntField(const String8& path) { std::string buf; int value = 0; if (readFromFile(path, &buf) > 0) android::base::ParseInt(buf, &value); return value; } static bool isScopedPowerSupply(const char* name) { constexpr char kScopeDevice[] = "Device"; String8 path; path.appendFormat("%s/%s/scope", POWER_SUPPLY_SYSFS_PATH, name); std::string scope; return (readFromFile(path, &scope) > 0 && scope == kScopeDevice); } void BatteryMonitor::updateValues(void) { initHealthInfo(mHealthInfo.get()); if (!mHealthdConfig->batteryPresentPath.isEmpty()) mHealthInfo->batteryPresent = getBooleanField(mHealthdConfig->batteryPresentPath); else mHealthInfo->batteryPresent = mBatteryDevicePresent; mHealthInfo->batteryLevel = mBatteryFixedCapacity ? mBatteryFixedCapacity : getIntField(mHealthdConfig->batteryCapacityPath); mHealthInfo->batteryVoltageMillivolts = getIntField(mHealthdConfig->batteryVoltagePath) / 1000; if (!mHealthdConfig->batteryCurrentNowPath.isEmpty()) mHealthInfo->batteryCurrentMicroamps = getIntField(mHealthdConfig->batteryCurrentNowPath); if (!mHealthdConfig->batteryFullChargePath.isEmpty()) mHealthInfo->batteryFullChargeUah = getIntField(mHealthdConfig->batteryFullChargePath); if (!mHealthdConfig->batteryCycleCountPath.isEmpty()) mHealthInfo->batteryCycleCount = getIntField(mHealthdConfig->batteryCycleCountPath); if (!mHealthdConfig->batteryChargeCounterPath.isEmpty()) mHealthInfo->batteryChargeCounterUah = getIntField(mHealthdConfig->batteryChargeCounterPath); if (!mHealthdConfig->batteryCurrentAvgPath.isEmpty()) mHealthInfo->batteryCurrentAverageMicroamps = getIntField(mHealthdConfig->batteryCurrentAvgPath); if (!mHealthdConfig->batteryChargeTimeToFullNowPath.isEmpty()) mHealthInfo->batteryChargeTimeToFullNowSeconds = getIntField(mHealthdConfig->batteryChargeTimeToFullNowPath); if (!mHealthdConfig->batteryFullChargeDesignCapacityUahPath.isEmpty()) mHealthInfo->batteryFullChargeDesignCapacityUah = getIntField(mHealthdConfig->batteryFullChargeDesignCapacityUahPath); if (!mHealthdConfig->batteryStateOfHealthPath.isEmpty()) mHealthInfo->batteryStateOfHealth = getIntField(mHealthdConfig->batteryStateOfHealthPath); if (!mHealthdConfig->batteryManufacturingDatePath.isEmpty()) mHealthInfo->batteryHealthData->batteryManufacturingDateSeconds = getIntField(mHealthdConfig->batteryManufacturingDatePath); if (!mHealthdConfig->batteryFirstUsageDatePath.isEmpty()) mHealthInfo->batteryHealthData->batteryFirstUsageSeconds = getIntField(mHealthdConfig->batteryFirstUsageDatePath); mHealthInfo->batteryTemperatureTenthsCelsius = mBatteryFixedTemperature ? mBatteryFixedTemperature : getIntField(mHealthdConfig->batteryTemperaturePath); std::string buf; if (readFromFile(mHealthdConfig->batteryCapacityLevelPath, &buf) > 0) mHealthInfo->batteryCapacityLevel = getBatteryCapacityLevel(buf.c_str()); if (readFromFile(mHealthdConfig->batteryStatusPath, &buf) > 0) mHealthInfo->batteryStatus = getBatteryStatus(buf.c_str()); if (readFromFile(mHealthdConfig->batteryHealthPath, &buf) > 0) mHealthInfo->batteryHealth = getBatteryHealth(buf.c_str()); if (readFromFile(mHealthdConfig->batteryTechnologyPath, &buf) > 0) mHealthInfo->batteryTechnology = String8(buf.c_str()); if (readFromFile(mHealthdConfig->chargingPolicyPath, &buf) > 0) mHealthInfo->chargingPolicy = getBatteryChargingPolicy(buf.c_str()); if (readFromFile(mHealthdConfig->chargingStatePath, &buf) > 0) mHealthInfo->chargingState = getBatteryChargingState(buf.c_str()); double MaxPower = 0; for (size_t i = 0; i < mChargerNames.size(); i++) { String8 path; path.appendFormat("%s/%s/online", POWER_SUPPLY_SYSFS_PATH, mChargerNames[i].string()); if (getIntField(path)) { path.clear(); path.appendFormat("%s/%s/type", POWER_SUPPLY_SYSFS_PATH, mChargerNames[i].string()); switch(readPowerSupplyType(path)) { case ANDROID_POWER_SUPPLY_TYPE_AC: mHealthInfo->chargerAcOnline = true; break; case ANDROID_POWER_SUPPLY_TYPE_USB: mHealthInfo->chargerUsbOnline = true; break; case ANDROID_POWER_SUPPLY_TYPE_WIRELESS: mHealthInfo->chargerWirelessOnline = true; break; case ANDROID_POWER_SUPPLY_TYPE_DOCK: mHealthInfo->chargerDockOnline = true; break; default: path.clear(); path.appendFormat("%s/%s/is_dock", POWER_SUPPLY_SYSFS_PATH, mChargerNames[i].string()); if (access(path.string(), R_OK) == 0) mHealthInfo->chargerDockOnline = true; else KLOG_WARNING(LOG_TAG, "%s: Unknown power supply type\n", mChargerNames[i].string()); } path.clear(); path.appendFormat("%s/%s/current_max", POWER_SUPPLY_SYSFS_PATH, mChargerNames[i].string()); int ChargingCurrent = (access(path.string(), R_OK) == 0) ? getIntField(path) : 0; path.clear(); path.appendFormat("%s/%s/voltage_max", POWER_SUPPLY_SYSFS_PATH, mChargerNames[i].string()); int ChargingVoltage = (access(path.string(), R_OK) == 0) ? getIntField(path) : DEFAULT_VBUS_VOLTAGE; double power = ((double)ChargingCurrent / MILLION) * ((double)ChargingVoltage / MILLION); if (MaxPower < power) { mHealthInfo->maxChargingCurrentMicroamps = ChargingCurrent; mHealthInfo->maxChargingVoltageMicrovolts = ChargingVoltage; MaxPower = power; } } } } static void doLogValues(const HealthInfo& props, const struct healthd_config& healthd_config) { char dmesgline[256]; size_t len; if (props.batteryPresent) { snprintf(dmesgline, sizeof(dmesgline), "battery l=%d v=%d t=%s%d.%d h=%d st=%d", props.batteryLevel, props.batteryVoltageMillivolts, props.batteryTemperatureTenthsCelsius < 0 ? "-" : "", abs(props.batteryTemperatureTenthsCelsius / 10), abs(props.batteryTemperatureTenthsCelsius % 10), props.batteryHealth, props.batteryStatus); len = strlen(dmesgline); if (!healthd_config.batteryCurrentNowPath.isEmpty()) { len += snprintf(dmesgline + len, sizeof(dmesgline) - len, " c=%d", props.batteryCurrentMicroamps); } if (!healthd_config.batteryFullChargePath.isEmpty()) { len += snprintf(dmesgline + len, sizeof(dmesgline) - len, " fc=%d", props.batteryFullChargeUah); } if (!healthd_config.batteryCycleCountPath.isEmpty()) { len += snprintf(dmesgline + len, sizeof(dmesgline) - len, " cc=%d", props.batteryCycleCount); } } else { len = snprintf(dmesgline, sizeof(dmesgline), "battery none"); } snprintf(dmesgline + len, sizeof(dmesgline) - len, " chg=%s%s%s%s", props.chargerAcOnline ? "a" : "", props.chargerUsbOnline ? "u" : "", props.chargerWirelessOnline ? "w" : "", props.chargerDockOnline ? "d" : ""); KLOG_WARNING(LOG_TAG, "%s\n", dmesgline); } void BatteryMonitor::logValues(const HealthInfo_2_1& health_info, const struct healthd_config& healthd_config) { HealthInfo aidl_health_info; (void)android::h2a::translate(health_info, &aidl_health_info); doLogValues(aidl_health_info, healthd_config); } void BatteryMonitor::logValues(void) { doLogValues(*mHealthInfo, *mHealthdConfig); } bool BatteryMonitor::isChargerOnline() { const HealthInfo& props = *mHealthInfo; return props.chargerAcOnline | props.chargerUsbOnline | props.chargerWirelessOnline | props.chargerDockOnline; } int BatteryMonitor::getChargeStatus() { BatteryStatus result = BatteryStatus::UNKNOWN; if (!mHealthdConfig->batteryStatusPath.isEmpty()) { std::string buf; if (readFromFile(mHealthdConfig->batteryStatusPath, &buf) > 0) result = getBatteryStatus(buf.c_str()); } return static_cast(result); } status_t BatteryMonitor::setChargingPolicy(int value) { status_t ret = NAME_NOT_FOUND; bool result; if (!mHealthdConfig->chargingPolicyPath.isEmpty()) { result = writeToFile(mHealthdConfig->chargingPolicyPath, value); if (!result) { KLOG_WARNING(LOG_TAG, "setChargingPolicy fail\n"); ret = BAD_VALUE; } else { ret = OK; } } return ret; } int BatteryMonitor::getChargingPolicy() { BatteryChargingPolicy result = BatteryChargingPolicy::DEFAULT; if (!mHealthdConfig->chargingPolicyPath.isEmpty()) { std::string buf; if (readFromFile(mHealthdConfig->chargingPolicyPath, &buf) > 0) result = getBatteryChargingPolicy(buf.c_str()); } return static_cast(result); } int BatteryMonitor::getBatteryHealthData(int id) { if (id == BATTERY_PROP_MANUFACTURING_DATE) { if (!mHealthdConfig->batteryManufacturingDatePath.isEmpty()) return getIntField(mHealthdConfig->batteryManufacturingDatePath); } if (id == BATTERY_PROP_FIRST_USAGE_DATE) { if (!mHealthdConfig->batteryFirstUsageDatePath.isEmpty()) return getIntField(mHealthdConfig->batteryFirstUsageDatePath); } return 0; } status_t BatteryMonitor::getProperty(int id, struct BatteryProperty *val) { status_t ret = BAD_VALUE; std::string buf; val->valueInt64 = LONG_MIN; switch(id) { case BATTERY_PROP_CHARGE_COUNTER: if (!mHealthdConfig->batteryChargeCounterPath.isEmpty()) { val->valueInt64 = getIntField(mHealthdConfig->batteryChargeCounterPath); ret = OK; } else { ret = NAME_NOT_FOUND; } break; case BATTERY_PROP_CURRENT_NOW: if (!mHealthdConfig->batteryCurrentNowPath.isEmpty()) { val->valueInt64 = getIntField(mHealthdConfig->batteryCurrentNowPath); ret = OK; } else { ret = NAME_NOT_FOUND; } break; case BATTERY_PROP_CURRENT_AVG: if (!mHealthdConfig->batteryCurrentAvgPath.isEmpty()) { val->valueInt64 = getIntField(mHealthdConfig->batteryCurrentAvgPath); ret = OK; } else { ret = NAME_NOT_FOUND; } break; case BATTERY_PROP_CAPACITY: if (!mHealthdConfig->batteryCapacityPath.isEmpty()) { val->valueInt64 = getIntField(mHealthdConfig->batteryCapacityPath); ret = OK; } else { ret = NAME_NOT_FOUND; } break; case BATTERY_PROP_ENERGY_COUNTER: if (mHealthdConfig->energyCounter) { ret = mHealthdConfig->energyCounter(&val->valueInt64); } else { ret = NAME_NOT_FOUND; } break; case BATTERY_PROP_BATTERY_STATUS: val->valueInt64 = getChargeStatus(); ret = OK; break; case BATTERY_PROP_CHARGING_POLICY: val->valueInt64 = getChargingPolicy(); ret = OK; break; case BATTERY_PROP_MANUFACTURING_DATE: val->valueInt64 = getBatteryHealthData(BATTERY_PROP_MANUFACTURING_DATE); ret = OK; break; case BATTERY_PROP_FIRST_USAGE_DATE: val->valueInt64 = getBatteryHealthData(BATTERY_PROP_FIRST_USAGE_DATE); ret = OK; break; default: break; } return ret; } void BatteryMonitor::dumpState(int fd) { int v; char vs[128]; const HealthInfo& props = *mHealthInfo; snprintf(vs, sizeof(vs), "ac: %d usb: %d wireless: %d dock: %d current_max: %d voltage_max: %d\n", props.chargerAcOnline, props.chargerUsbOnline, props.chargerWirelessOnline, props.chargerDockOnline, props.maxChargingCurrentMicroamps, props.maxChargingVoltageMicrovolts); write(fd, vs, strlen(vs)); snprintf(vs, sizeof(vs), "status: %d health: %d present: %d\n", props.batteryStatus, props.batteryHealth, props.batteryPresent); write(fd, vs, strlen(vs)); snprintf(vs, sizeof(vs), "level: %d voltage: %d temp: %d\n", props.batteryLevel, props.batteryVoltageMillivolts, props.batteryTemperatureTenthsCelsius); write(fd, vs, strlen(vs)); if (!mHealthdConfig->batteryCurrentNowPath.isEmpty()) { v = getIntField(mHealthdConfig->batteryCurrentNowPath); snprintf(vs, sizeof(vs), "current now: %d\n", v); write(fd, vs, strlen(vs)); } if (!mHealthdConfig->batteryCurrentAvgPath.isEmpty()) { v = getIntField(mHealthdConfig->batteryCurrentAvgPath); snprintf(vs, sizeof(vs), "current avg: %d\n", v); write(fd, vs, strlen(vs)); } if (!mHealthdConfig->batteryChargeCounterPath.isEmpty()) { v = getIntField(mHealthdConfig->batteryChargeCounterPath); snprintf(vs, sizeof(vs), "charge counter: %d\n", v); write(fd, vs, strlen(vs)); } if (!mHealthdConfig->batteryCurrentNowPath.isEmpty()) { snprintf(vs, sizeof(vs), "current now: %d\n", props.batteryCurrentMicroamps); write(fd, vs, strlen(vs)); } if (!mHealthdConfig->batteryCycleCountPath.isEmpty()) { snprintf(vs, sizeof(vs), "cycle count: %d\n", props.batteryCycleCount); write(fd, vs, strlen(vs)); } if (!mHealthdConfig->batteryFullChargePath.isEmpty()) { snprintf(vs, sizeof(vs), "Full charge: %d\n", props.batteryFullChargeUah); write(fd, vs, strlen(vs)); } } void BatteryMonitor::init(struct healthd_config *hc) { String8 path; char pval[PROPERTY_VALUE_MAX]; mHealthdConfig = hc; std::unique_ptr dir(opendir(POWER_SUPPLY_SYSFS_PATH), closedir); if (dir == NULL) { KLOG_ERROR(LOG_TAG, "Could not open %s\n", POWER_SUPPLY_SYSFS_PATH); } else { struct dirent* entry; while ((entry = readdir(dir.get()))) { const char* name = entry->d_name; if (!strcmp(name, ".") || !strcmp(name, "..")) continue; std::vector::iterator itIgnoreName = find(hc->ignorePowerSupplyNames.begin(), hc->ignorePowerSupplyNames.end(), String8(name)); if (itIgnoreName != hc->ignorePowerSupplyNames.end()) continue; // Look for "type" file in each subdirectory path.clear(); path.appendFormat("%s/%s/type", POWER_SUPPLY_SYSFS_PATH, name); switch(readPowerSupplyType(path)) { case ANDROID_POWER_SUPPLY_TYPE_AC: case ANDROID_POWER_SUPPLY_TYPE_USB: case ANDROID_POWER_SUPPLY_TYPE_WIRELESS: case ANDROID_POWER_SUPPLY_TYPE_DOCK: path.clear(); path.appendFormat("%s/%s/online", POWER_SUPPLY_SYSFS_PATH, name); if (access(path.string(), R_OK) == 0) mChargerNames.add(String8(name)); break; case ANDROID_POWER_SUPPLY_TYPE_BATTERY: // Some devices expose the battery status of sub-component like // stylus. Such a device-scoped battery info needs to be skipped // in BatteryMonitor, which is intended to report the status of // the battery supplying the power to the whole system. if (isScopedPowerSupply(name)) continue; mBatteryDevicePresent = true; if (mHealthdConfig->batteryStatusPath.isEmpty()) { path.clear(); path.appendFormat("%s/%s/status", POWER_SUPPLY_SYSFS_PATH, name); if (access(path, R_OK) == 0) mHealthdConfig->batteryStatusPath = path; } if (mHealthdConfig->batteryHealthPath.isEmpty()) { path.clear(); path.appendFormat("%s/%s/health", POWER_SUPPLY_SYSFS_PATH, name); if (access(path, R_OK) == 0) mHealthdConfig->batteryHealthPath = path; } if (mHealthdConfig->batteryPresentPath.isEmpty()) { path.clear(); path.appendFormat("%s/%s/present", POWER_SUPPLY_SYSFS_PATH, name); if (access(path, R_OK) == 0) mHealthdConfig->batteryPresentPath = path; } if (mHealthdConfig->batteryCapacityPath.isEmpty()) { path.clear(); path.appendFormat("%s/%s/capacity", POWER_SUPPLY_SYSFS_PATH, name); if (access(path, R_OK) == 0) mHealthdConfig->batteryCapacityPath = path; } if (mHealthdConfig->batteryVoltagePath.isEmpty()) { path.clear(); path.appendFormat("%s/%s/voltage_now", POWER_SUPPLY_SYSFS_PATH, name); if (access(path, R_OK) == 0) { mHealthdConfig->batteryVoltagePath = path; } } if (mHealthdConfig->batteryFullChargePath.isEmpty()) { path.clear(); path.appendFormat("%s/%s/charge_full", POWER_SUPPLY_SYSFS_PATH, name); if (access(path, R_OK) == 0) mHealthdConfig->batteryFullChargePath = path; } if (mHealthdConfig->batteryCurrentNowPath.isEmpty()) { path.clear(); path.appendFormat("%s/%s/current_now", POWER_SUPPLY_SYSFS_PATH, name); if (access(path, R_OK) == 0) mHealthdConfig->batteryCurrentNowPath = path; } if (mHealthdConfig->batteryCycleCountPath.isEmpty()) { path.clear(); path.appendFormat("%s/%s/cycle_count", POWER_SUPPLY_SYSFS_PATH, name); if (access(path, R_OK) == 0) mHealthdConfig->batteryCycleCountPath = path; } if (mHealthdConfig->batteryCapacityLevelPath.isEmpty()) { path.clear(); path.appendFormat("%s/%s/capacity_level", POWER_SUPPLY_SYSFS_PATH, name); if (access(path, R_OK) == 0) mHealthdConfig->batteryCapacityLevelPath = path; } if (mHealthdConfig->batteryChargeTimeToFullNowPath.isEmpty()) { path.clear(); path.appendFormat("%s/%s/time_to_full_now", POWER_SUPPLY_SYSFS_PATH, name); if (access(path, R_OK) == 0) mHealthdConfig->batteryChargeTimeToFullNowPath = path; } if (mHealthdConfig->batteryFullChargeDesignCapacityUahPath.isEmpty()) { path.clear(); path.appendFormat("%s/%s/charge_full_design", POWER_SUPPLY_SYSFS_PATH, name); if (access(path, R_OK) == 0) mHealthdConfig->batteryFullChargeDesignCapacityUahPath = path; } if (mHealthdConfig->batteryCurrentAvgPath.isEmpty()) { path.clear(); path.appendFormat("%s/%s/current_avg", POWER_SUPPLY_SYSFS_PATH, name); if (access(path, R_OK) == 0) mHealthdConfig->batteryCurrentAvgPath = path; } if (mHealthdConfig->batteryChargeCounterPath.isEmpty()) { path.clear(); path.appendFormat("%s/%s/charge_counter", POWER_SUPPLY_SYSFS_PATH, name); if (access(path, R_OK) == 0) mHealthdConfig->batteryChargeCounterPath = path; } if (mHealthdConfig->batteryTemperaturePath.isEmpty()) { path.clear(); path.appendFormat("%s/%s/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; } if (mHealthdConfig->batteryStateOfHealthPath.isEmpty()) { path.clear(); path.appendFormat("%s/%s/state_of_health", POWER_SUPPLY_SYSFS_PATH, name); if (access(path, R_OK) == 0) { mHealthdConfig->batteryStateOfHealthPath = path; } else { path.clear(); path.appendFormat("%s/%s/health_index", POWER_SUPPLY_SYSFS_PATH, name); if (access(path, R_OK) == 0) mHealthdConfig->batteryStateOfHealthPath = path; } } if (mHealthdConfig->batteryManufacturingDatePath.isEmpty()) { path.clear(); path.appendFormat("%s/%s/manufacturing_date", POWER_SUPPLY_SYSFS_PATH, name); if (access(path, R_OK) == 0) mHealthdConfig->batteryManufacturingDatePath = path; } if (mHealthdConfig->batteryFirstUsageDatePath.isEmpty()) { path.clear(); path.appendFormat("%s/%s/first_usage_date", POWER_SUPPLY_SYSFS_PATH, name); if (access(path, R_OK) == 0) mHealthdConfig->batteryFirstUsageDatePath = path; } if (mHealthdConfig->chargingStatePath.isEmpty()) { path.clear(); path.appendFormat("%s/%s/charging_state", POWER_SUPPLY_SYSFS_PATH, name); if (access(path, R_OK) == 0) mHealthdConfig->chargingStatePath = path; } if (mHealthdConfig->chargingPolicyPath.isEmpty()) { path.clear(); path.appendFormat("%s/%s/charging_policy", POWER_SUPPLY_SYSFS_PATH, name); if (access(path, R_OK) == 0) mHealthdConfig->chargingPolicyPath = path; } break; case ANDROID_POWER_SUPPLY_TYPE_UNKNOWN: break; } // Look for "is_dock" file path.clear(); path.appendFormat("%s/%s/is_dock", POWER_SUPPLY_SYSFS_PATH, name); if (access(path.string(), R_OK) == 0) { path.clear(); path.appendFormat("%s/%s/online", POWER_SUPPLY_SYSFS_PATH, name); if (access(path.string(), R_OK) == 0) mChargerNames.add(String8(name)); } } } // Typically the case for devices which do not have a battery and // and are always plugged into AC mains. 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 (mHealthdConfig->batteryCurrentNowPath.isEmpty()) KLOG_WARNING(LOG_TAG, "BatteryCurrentNowPath not found\n"); if (mHealthdConfig->batteryFullChargePath.isEmpty()) KLOG_WARNING(LOG_TAG, "BatteryFullChargePath not found\n"); if (mHealthdConfig->batteryCycleCountPath.isEmpty()) KLOG_WARNING(LOG_TAG, "BatteryCycleCountPath not found\n"); if (mHealthdConfig->batteryCapacityLevelPath.isEmpty()) KLOG_WARNING(LOG_TAG, "batteryCapacityLevelPath not found\n"); if (mHealthdConfig->batteryChargeTimeToFullNowPath.isEmpty()) KLOG_WARNING(LOG_TAG, "batteryChargeTimeToFullNowPath. not found\n"); if (mHealthdConfig->batteryFullChargeDesignCapacityUahPath.isEmpty()) KLOG_WARNING(LOG_TAG, "batteryFullChargeDesignCapacityUahPath. not found\n"); if (mHealthdConfig->batteryStateOfHealthPath.isEmpty()) KLOG_WARNING(LOG_TAG, "batteryStateOfHealthPath not found\n"); if (mHealthdConfig->batteryManufacturingDatePath.isEmpty()) KLOG_WARNING(LOG_TAG, "batteryManufacturingDatePath not found\n"); if (mHealthdConfig->batteryFirstUsageDatePath.isEmpty()) KLOG_WARNING(LOG_TAG, "batteryFirstUsageDatePath not found\n"); if (mHealthdConfig->chargingStatePath.isEmpty()) KLOG_WARNING(LOG_TAG, "chargingStatePath not found\n"); if (mHealthdConfig->chargingPolicyPath.isEmpty()) KLOG_WARNING(LOG_TAG, "chargingPolicyPath 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