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platform_system_core/healthd/BatteryMonitor.cpp
Tomasz Wasilczyk 2b1a0599c4 Don't depend on String8 cast to C string 
Bug: 295394788
Test: m checkbuild
Change-Id: I5b86ae56250d409a23ab3f2bc72b725bcf6ab23e
2023-09-20 15:11:54 +00:00

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/*
* 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 <healthd/healthd.h>
#include <healthd/BatteryMonitor.h>
#include <dirent.h>
#include <errno.h>
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <sys/types.h>
#include <unistd.h>
#include <algorithm>
#include <memory>
#include <optional>
#include <aidl/android/hardware/health/HealthInfo.h>
#include <android-base/file.h>
#include <android-base/parseint.h>
#include <android-base/strings.h>
#include <android/hardware/health/2.1/types.h>
#include <android/hardware/health/translate-ndk.h>
#include <batteryservice/BatteryService.h>
#include <cutils/klog.h>
#include <cutils/properties.h>
#include <utils/Errors.h>
#include <utils/String8.h>
#include <utils/Vector.h>
#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<android::hardware::health::V2_1::BatteryCapacityLevel>(
in.batteryCapacityLevel);
out->batteryChargeTimeToFullNowSeconds = in.batteryChargeTimeToFullNowSeconds;
out->batteryFullChargeDesignCapacityUah = in.batteryFullChargeDesignCapacityUah;
}
} // namespace
namespace android {
template <typename T>
struct SysfsStringEnumMap {
const char* s;
T val;
};
template <typename T>
static std::optional<T> mapSysfsString(const char* str, SysfsStringEnumMap<T> 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),
mBatteryHealthStatus(BatteryMonitor::BH_UNKNOWN),
mHealthInfo(std::make_unique<HealthInfo>()) {
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<BatteryStatus> 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<BatteryCapacityLevel> 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<BatteryHealth> 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;
}
BatteryHealth getBatteryHealthStatus(int status) {
BatteryHealth value;
if (status == BatteryMonitor::BH_NOMINAL)
value = BatteryHealth::GOOD;
else if (status == BatteryMonitor::BH_MARGINAL)
value = BatteryHealth::FAIR;
else if (status == BatteryMonitor::BH_NEEDS_REPLACEMENT)
value = BatteryHealth::DEAD;
else if (status == BatteryMonitor::BH_FAILED)
value = BatteryHealth::UNSPECIFIED_FAILURE;
else if (status == BatteryMonitor::BH_NOT_AVAILABLE)
value = BatteryHealth::NOT_AVAILABLE;
else if (status == BatteryMonitor::BH_INCONSISTENT)
value = BatteryHealth::INCONSISTENT;
else
value = BatteryHealth::UNKNOWN;
return value;
}
BatteryChargingPolicy getBatteryChargingPolicy(const char* chargingPolicy) {
static SysfsStringEnumMap<BatteryChargingPolicy> 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<BatteryChargingState> 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<int> 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<BatteryMonitor::PowerSupplyType>(*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.empty())
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.empty())
mHealthInfo->batteryCurrentMicroamps = getIntField(mHealthdConfig->batteryCurrentNowPath);
if (!mHealthdConfig->batteryFullChargePath.empty())
mHealthInfo->batteryFullChargeUah = getIntField(mHealthdConfig->batteryFullChargePath);
if (!mHealthdConfig->batteryCycleCountPath.empty())
mHealthInfo->batteryCycleCount = getIntField(mHealthdConfig->batteryCycleCountPath);
if (!mHealthdConfig->batteryChargeCounterPath.empty())
mHealthInfo->batteryChargeCounterUah =
getIntField(mHealthdConfig->batteryChargeCounterPath);
if (!mHealthdConfig->batteryCurrentAvgPath.empty())
mHealthInfo->batteryCurrentAverageMicroamps =
getIntField(mHealthdConfig->batteryCurrentAvgPath);
if (!mHealthdConfig->batteryChargeTimeToFullNowPath.empty())
mHealthInfo->batteryChargeTimeToFullNowSeconds =
getIntField(mHealthdConfig->batteryChargeTimeToFullNowPath);
if (!mHealthdConfig->batteryFullChargeDesignCapacityUahPath.empty())
mHealthInfo->batteryFullChargeDesignCapacityUah =
getIntField(mHealthdConfig->batteryFullChargeDesignCapacityUahPath);
if (!mHealthdConfig->batteryHealthStatusPath.empty())
mBatteryHealthStatus = getIntField(mHealthdConfig->batteryHealthStatusPath);
if (!mHealthdConfig->batteryStateOfHealthPath.empty())
mHealthInfo->batteryHealthData->batteryStateOfHealth =
getIntField(mHealthdConfig->batteryStateOfHealthPath);
if (!mHealthdConfig->batteryManufacturingDatePath.empty())
mHealthInfo->batteryHealthData->batteryManufacturingDateSeconds =
getIntField(mHealthdConfig->batteryManufacturingDatePath);
if (!mHealthdConfig->batteryFirstUsageDatePath.empty())
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());
// Backward compatible with android.hardware.health V1
if (mBatteryHealthStatus < BatteryMonitor::BH_MARGINAL) {
if (readFromFile(mHealthdConfig->batteryHealthPath, &buf) > 0)
mHealthInfo->batteryHealth = getBatteryHealth(buf.c_str());
} else {
mHealthInfo->batteryHealth = getBatteryHealthStatus(mBatteryHealthStatus);
}
if (readFromFile(mHealthdConfig->batteryTechnologyPath, &buf) > 0)
mHealthInfo->batteryTechnology = buf;
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].c_str());
if (getIntField(path)) {
path.clear();
path.appendFormat("%s/%s/type", POWER_SUPPLY_SYSFS_PATH, mChargerNames[i].c_str());
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].c_str());
if (access(path.c_str(), R_OK) == 0)
mHealthInfo->chargerDockOnline = true;
else
KLOG_WARNING(LOG_TAG, "%s: Unknown power supply type\n",
mChargerNames[i].c_str());
}
path.clear();
path.appendFormat("%s/%s/current_max", POWER_SUPPLY_SYSFS_PATH,
mChargerNames[i].c_str());
int ChargingCurrent = (access(path.c_str(), R_OK) == 0) ? getIntField(path) : 0;
path.clear();
path.appendFormat("%s/%s/voltage_max", POWER_SUPPLY_SYSFS_PATH,
mChargerNames[i].c_str());
int ChargingVoltage =
(access(path.c_str(), 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.empty()) {
len += snprintf(dmesgline + len, sizeof(dmesgline) - len, " c=%d",
props.batteryCurrentMicroamps);
}
if (!healthd_config.batteryFullChargePath.empty()) {
len += snprintf(dmesgline + len, sizeof(dmesgline) - len, " fc=%d",
props.batteryFullChargeUah);
}
if (!healthd_config.batteryCycleCountPath.empty()) {
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.empty()) {
std::string buf;
if (readFromFile(mHealthdConfig->batteryStatusPath, &buf) > 0)
result = getBatteryStatus(buf.c_str());
}
return static_cast<int>(result);
}
status_t BatteryMonitor::setChargingPolicy(int value) {
status_t ret = NAME_NOT_FOUND;
bool result;
if (!mHealthdConfig->chargingPolicyPath.empty()) {
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.empty()) {
std::string buf;
if (readFromFile(mHealthdConfig->chargingPolicyPath, &buf) > 0)
result = getBatteryChargingPolicy(buf.c_str());
}
return static_cast<int>(result);
}
int BatteryMonitor::getBatteryHealthData(int id) {
if (id == BATTERY_PROP_MANUFACTURING_DATE) {
if (!mHealthdConfig->batteryManufacturingDatePath.empty())
return getIntField(mHealthdConfig->batteryManufacturingDatePath);
}
if (id == BATTERY_PROP_FIRST_USAGE_DATE) {
if (!mHealthdConfig->batteryFirstUsageDatePath.empty())
return getIntField(mHealthdConfig->batteryFirstUsageDatePath);
}
if (id == BATTERY_PROP_STATE_OF_HEALTH) {
if (!mHealthdConfig->batteryStateOfHealthPath.empty())
return getIntField(mHealthdConfig->batteryStateOfHealthPath);
}
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.empty()) {
val->valueInt64 =
getIntField(mHealthdConfig->batteryChargeCounterPath);
ret = OK;
} else {
ret = NAME_NOT_FOUND;
}
break;
case BATTERY_PROP_CURRENT_NOW:
if (!mHealthdConfig->batteryCurrentNowPath.empty()) {
val->valueInt64 =
getIntField(mHealthdConfig->batteryCurrentNowPath);
ret = OK;
} else {
ret = NAME_NOT_FOUND;
}
break;
case BATTERY_PROP_CURRENT_AVG:
if (!mHealthdConfig->batteryCurrentAvgPath.empty()) {
val->valueInt64 =
getIntField(mHealthdConfig->batteryCurrentAvgPath);
ret = OK;
} else {
ret = NAME_NOT_FOUND;
}
break;
case BATTERY_PROP_CAPACITY:
if (!mHealthdConfig->batteryCapacityPath.empty()) {
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;
case BATTERY_PROP_STATE_OF_HEALTH:
val->valueInt64 = getBatteryHealthData(BATTERY_PROP_STATE_OF_HEALTH);
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.empty()) {
v = getIntField(mHealthdConfig->batteryCurrentNowPath);
snprintf(vs, sizeof(vs), "current now: %d\n", v);
write(fd, vs, strlen(vs));
}
if (!mHealthdConfig->batteryCurrentAvgPath.empty()) {
v = getIntField(mHealthdConfig->batteryCurrentAvgPath);
snprintf(vs, sizeof(vs), "current avg: %d\n", v);
write(fd, vs, strlen(vs));
}
if (!mHealthdConfig->batteryChargeCounterPath.empty()) {
v = getIntField(mHealthdConfig->batteryChargeCounterPath);
snprintf(vs, sizeof(vs), "charge counter: %d\n", v);
write(fd, vs, strlen(vs));
}
if (!mHealthdConfig->batteryCurrentNowPath.empty()) {
snprintf(vs, sizeof(vs), "current now: %d\n", props.batteryCurrentMicroamps);
write(fd, vs, strlen(vs));
}
if (!mHealthdConfig->batteryCycleCountPath.empty()) {
snprintf(vs, sizeof(vs), "cycle count: %d\n", props.batteryCycleCount);
write(fd, vs, strlen(vs));
}
if (!mHealthdConfig->batteryFullChargePath.empty()) {
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, decltype(&closedir)> 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<String8>::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.c_str(), 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.empty()) {
path.clear();
path.appendFormat("%s/%s/status", POWER_SUPPLY_SYSFS_PATH,
name);
if (access(path.c_str(), R_OK) == 0) mHealthdConfig->batteryStatusPath = path;
}
if (mHealthdConfig->batteryHealthPath.empty()) {
path.clear();
path.appendFormat("%s/%s/health", POWER_SUPPLY_SYSFS_PATH,
name);
if (access(path.c_str(), R_OK) == 0) mHealthdConfig->batteryHealthPath = path;
}
if (mHealthdConfig->batteryPresentPath.empty()) {
path.clear();
path.appendFormat("%s/%s/present", POWER_SUPPLY_SYSFS_PATH,
name);
if (access(path.c_str(), R_OK) == 0) mHealthdConfig->batteryPresentPath = path;
}
if (mHealthdConfig->batteryCapacityPath.empty()) {
path.clear();
path.appendFormat("%s/%s/capacity", POWER_SUPPLY_SYSFS_PATH,
name);
if (access(path.c_str(), R_OK) == 0) mHealthdConfig->batteryCapacityPath = path;
}
if (mHealthdConfig->batteryVoltagePath.empty()) {
path.clear();
path.appendFormat("%s/%s/voltage_now",
POWER_SUPPLY_SYSFS_PATH, name);
if (access(path.c_str(), R_OK) == 0) {
mHealthdConfig->batteryVoltagePath = path;
}
}
if (mHealthdConfig->batteryFullChargePath.empty()) {
path.clear();
path.appendFormat("%s/%s/charge_full",
POWER_SUPPLY_SYSFS_PATH, name);
if (access(path.c_str(), R_OK) == 0)
mHealthdConfig->batteryFullChargePath = path;
}
if (mHealthdConfig->batteryCurrentNowPath.empty()) {
path.clear();
path.appendFormat("%s/%s/current_now",
POWER_SUPPLY_SYSFS_PATH, name);
if (access(path.c_str(), R_OK) == 0)
mHealthdConfig->batteryCurrentNowPath = path;
}
if (mHealthdConfig->batteryCycleCountPath.empty()) {
path.clear();
path.appendFormat("%s/%s/cycle_count",
POWER_SUPPLY_SYSFS_PATH, name);
if (access(path.c_str(), R_OK) == 0)
mHealthdConfig->batteryCycleCountPath = path;
}
if (mHealthdConfig->batteryCapacityLevelPath.empty()) {
path.clear();
path.appendFormat("%s/%s/capacity_level", POWER_SUPPLY_SYSFS_PATH, name);
if (access(path.c_str(), R_OK) == 0) {
mHealthdConfig->batteryCapacityLevelPath = path;
}
}
if (mHealthdConfig->batteryChargeTimeToFullNowPath.empty()) {
path.clear();
path.appendFormat("%s/%s/time_to_full_now", POWER_SUPPLY_SYSFS_PATH, name);
if (access(path.c_str(), R_OK) == 0)
mHealthdConfig->batteryChargeTimeToFullNowPath = path;
}
if (mHealthdConfig->batteryFullChargeDesignCapacityUahPath.empty()) {
path.clear();
path.appendFormat("%s/%s/charge_full_design", POWER_SUPPLY_SYSFS_PATH, name);
if (access(path.c_str(), R_OK) == 0)
mHealthdConfig->batteryFullChargeDesignCapacityUahPath = path;
}
if (mHealthdConfig->batteryCurrentAvgPath.empty()) {
path.clear();
path.appendFormat("%s/%s/current_avg",
POWER_SUPPLY_SYSFS_PATH, name);
if (access(path.c_str(), R_OK) == 0)
mHealthdConfig->batteryCurrentAvgPath = path;
}
if (mHealthdConfig->batteryChargeCounterPath.empty()) {
path.clear();
path.appendFormat("%s/%s/charge_counter",
POWER_SUPPLY_SYSFS_PATH, name);
if (access(path.c_str(), R_OK) == 0)
mHealthdConfig->batteryChargeCounterPath = path;
}
if (mHealthdConfig->batteryTemperaturePath.empty()) {
path.clear();
path.appendFormat("%s/%s/temp", POWER_SUPPLY_SYSFS_PATH,
name);
if (access(path.c_str(), R_OK) == 0) {
mHealthdConfig->batteryTemperaturePath = path;
}
}
if (mHealthdConfig->batteryTechnologyPath.empty()) {
path.clear();
path.appendFormat("%s/%s/technology",
POWER_SUPPLY_SYSFS_PATH, name);
if (access(path.c_str(), R_OK) == 0)
mHealthdConfig->batteryTechnologyPath = path;
}
if (mHealthdConfig->batteryStateOfHealthPath.empty()) {
path.clear();
path.appendFormat("%s/%s/state_of_health", POWER_SUPPLY_SYSFS_PATH, name);
if (access(path.c_str(), R_OK) == 0) {
mHealthdConfig->batteryStateOfHealthPath = path;
} else {
path.clear();
path.appendFormat("%s/%s/health_index", POWER_SUPPLY_SYSFS_PATH, name);
if (access(path.c_str(), R_OK) == 0)
mHealthdConfig->batteryStateOfHealthPath = path;
}
}
if (mHealthdConfig->batteryHealthStatusPath.empty()) {
path.clear();
path.appendFormat("%s/%s/health_status", POWER_SUPPLY_SYSFS_PATH, name);
if (access(path.c_str(), R_OK) == 0) {
mHealthdConfig->batteryHealthStatusPath = path;
}
}
if (mHealthdConfig->batteryManufacturingDatePath.empty()) {
path.clear();
path.appendFormat("%s/%s/manufacturing_date", POWER_SUPPLY_SYSFS_PATH, name);
if (access(path.c_str(), R_OK) == 0)
mHealthdConfig->batteryManufacturingDatePath = path;
}
if (mHealthdConfig->batteryFirstUsageDatePath.empty()) {
path.clear();
path.appendFormat("%s/%s/first_usage_date", POWER_SUPPLY_SYSFS_PATH, name);
if (access(path.c_str(), R_OK) == 0) {
mHealthdConfig->batteryFirstUsageDatePath = path;
}
}
if (mHealthdConfig->chargingStatePath.empty()) {
path.clear();
path.appendFormat("%s/%s/charging_state", POWER_SUPPLY_SYSFS_PATH, name);
if (access(path.c_str(), R_OK) == 0) mHealthdConfig->chargingStatePath = path;
}
if (mHealthdConfig->chargingPolicyPath.empty()) {
path.clear();
path.appendFormat("%s/%s/charging_policy", POWER_SUPPLY_SYSFS_PATH, name);
if (access(path.c_str(), 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.c_str(), R_OK) == 0) {
path.clear();
path.appendFormat("%s/%s/online", POWER_SUPPLY_SYSFS_PATH, name);
if (access(path.c_str(), 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.empty())
KLOG_WARNING(LOG_TAG, "BatteryStatusPath not found\n");
if (mHealthdConfig->batteryHealthPath.empty())
KLOG_WARNING(LOG_TAG, "BatteryHealthPath not found\n");
if (mHealthdConfig->batteryPresentPath.empty())
KLOG_WARNING(LOG_TAG, "BatteryPresentPath not found\n");
if (mHealthdConfig->batteryCapacityPath.empty())
KLOG_WARNING(LOG_TAG, "BatteryCapacityPath not found\n");
if (mHealthdConfig->batteryVoltagePath.empty())
KLOG_WARNING(LOG_TAG, "BatteryVoltagePath not found\n");
if (mHealthdConfig->batteryTemperaturePath.empty())
KLOG_WARNING(LOG_TAG, "BatteryTemperaturePath not found\n");
if (mHealthdConfig->batteryTechnologyPath.empty())
KLOG_WARNING(LOG_TAG, "BatteryTechnologyPath not found\n");
if (mHealthdConfig->batteryCurrentNowPath.empty())
KLOG_WARNING(LOG_TAG, "BatteryCurrentNowPath not found\n");
if (mHealthdConfig->batteryFullChargePath.empty())
KLOG_WARNING(LOG_TAG, "BatteryFullChargePath not found\n");
if (mHealthdConfig->batteryCycleCountPath.empty())
KLOG_WARNING(LOG_TAG, "BatteryCycleCountPath not found\n");
if (mHealthdConfig->batteryCapacityLevelPath.empty())
KLOG_WARNING(LOG_TAG, "batteryCapacityLevelPath not found\n");
if (mHealthdConfig->batteryChargeTimeToFullNowPath.empty())
KLOG_WARNING(LOG_TAG, "batteryChargeTimeToFullNowPath. not found\n");
if (mHealthdConfig->batteryFullChargeDesignCapacityUahPath.empty())
KLOG_WARNING(LOG_TAG, "batteryFullChargeDesignCapacityUahPath. not found\n");
if (mHealthdConfig->batteryStateOfHealthPath.empty())
KLOG_WARNING(LOG_TAG, "batteryStateOfHealthPath not found\n");
if (mHealthdConfig->batteryHealthStatusPath.empty())
KLOG_WARNING(LOG_TAG, "batteryHealthStatusPath not found\n");
if (mHealthdConfig->batteryManufacturingDatePath.empty())
KLOG_WARNING(LOG_TAG, "batteryManufacturingDatePath not found\n");
if (mHealthdConfig->batteryFirstUsageDatePath.empty())
KLOG_WARNING(LOG_TAG, "batteryFirstUsageDatePath not found\n");
if (mHealthdConfig->chargingStatePath.empty())
KLOG_WARNING(LOG_TAG, "chargingStatePath not found\n");
if (mHealthdConfig->chargingPolicyPath.empty())
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
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