| /* |
| * 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.h" |
| #include "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 <batteryservice/BatteryService.h> |
| #include <cutils/klog.h> |
| #include <cutils/properties.h> |
| #include <log/log_read.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 ALWAYS_PLUGGED_CAPACITY 100 |
| |
| namespace android { |
| |
| struct sysfsStringEnumMap { |
| const char* s; |
| int val; |
| }; |
| |
| static int mapSysfsString(const char* str, |
| struct sysfsStringEnumMap map[]) { |
| for (int i = 0; map[i].s; i++) |
| if (!strcmp(str, map[i].s)) |
| return map[i].val; |
| |
| return -1; |
| } |
| |
| int BatteryMonitor::getBatteryStatus(const char* status) { |
| int ret; |
| struct sysfsStringEnumMap batteryStatusMap[] = { |
| { "Unknown", BATTERY_STATUS_UNKNOWN }, |
| { "Charging", BATTERY_STATUS_CHARGING }, |
| { "Discharging", BATTERY_STATUS_DISCHARGING }, |
| { "Not charging", BATTERY_STATUS_NOT_CHARGING }, |
| { "Full", BATTERY_STATUS_FULL }, |
| { NULL, 0 }, |
| }; |
| |
| ret = mapSysfsString(status, batteryStatusMap); |
| if (ret < 0) { |
| KLOG_WARNING(LOG_TAG, "Unknown battery status '%s'\n", status); |
| ret = BATTERY_STATUS_UNKNOWN; |
| } |
| |
| return ret; |
| } |
| |
| int BatteryMonitor::getBatteryHealth(const char* status) { |
| int ret; |
| struct sysfsStringEnumMap batteryHealthMap[] = { |
| { "Unknown", BATTERY_HEALTH_UNKNOWN }, |
| { "Good", BATTERY_HEALTH_GOOD }, |
| { "Overheat", BATTERY_HEALTH_OVERHEAT }, |
| { "Dead", BATTERY_HEALTH_DEAD }, |
| { "Over voltage", BATTERY_HEALTH_OVER_VOLTAGE }, |
| { "Unspecified failure", BATTERY_HEALTH_UNSPECIFIED_FAILURE }, |
| { "Cold", BATTERY_HEALTH_COLD }, |
| { NULL, 0 }, |
| }; |
| |
| ret = mapSysfsString(status, batteryHealthMap); |
| if (ret < 0) { |
| KLOG_WARNING(LOG_TAG, "Unknown battery health '%s'\n", status); |
| ret = BATTERY_HEALTH_UNKNOWN; |
| } |
| |
| return ret; |
| } |
| |
| int BatteryMonitor::readFromFile(const String8& path, char* buf, size_t size) { |
| char *cp = NULL; |
| |
| if (path.isEmpty()) |
| return -1; |
| int fd = open(path.string(), O_RDONLY, 0); |
| if (fd == -1) { |
| KLOG_ERROR(LOG_TAG, "Could not open '%s'\n", path.string()); |
| return -1; |
| } |
| |
| ssize_t count = TEMP_FAILURE_RETRY(read(fd, buf, size)); |
| if (count > 0) |
| cp = (char *)memrchr(buf, '\n', count); |
| |
| if (cp) |
| *cp = '\0'; |
| else |
| buf[0] = '\0'; |
| |
| close(fd); |
| return count; |
| } |
| |
| BatteryMonitor::PowerSupplyType BatteryMonitor::readPowerSupplyType(const String8& path) { |
| const int SIZE = 128; |
| char buf[SIZE]; |
| int length = readFromFile(path, buf, SIZE); |
| BatteryMonitor::PowerSupplyType ret; |
| struct sysfsStringEnumMap supplyTypeMap[] = { |
| { "Unknown", ANDROID_POWER_SUPPLY_TYPE_UNKNOWN }, |
| { "Battery", ANDROID_POWER_SUPPLY_TYPE_BATTERY }, |
| { "UPS", ANDROID_POWER_SUPPLY_TYPE_AC }, |
| { "Mains", ANDROID_POWER_SUPPLY_TYPE_AC }, |
| { "USB", ANDROID_POWER_SUPPLY_TYPE_USB }, |
| { "USB_DCP", ANDROID_POWER_SUPPLY_TYPE_AC }, |
| { "USB_CDP", ANDROID_POWER_SUPPLY_TYPE_AC }, |
| { "USB_ACA", ANDROID_POWER_SUPPLY_TYPE_AC }, |
| { "Wireless", ANDROID_POWER_SUPPLY_TYPE_WIRELESS }, |
| { NULL, 0 }, |
| }; |
| |
| if (length <= 0) |
| return ANDROID_POWER_SUPPLY_TYPE_UNKNOWN; |
| |
| ret = (BatteryMonitor::PowerSupplyType)mapSysfsString(buf, supplyTypeMap); |
| if (ret < 0) |
| ret = ANDROID_POWER_SUPPLY_TYPE_UNKNOWN; |
| |
| return ret; |
| } |
| |
| bool BatteryMonitor::getBooleanField(const String8& path) { |
| const int SIZE = 16; |
| char buf[SIZE]; |
| |
| bool value = false; |
| if (readFromFile(path, buf, SIZE) > 0) { |
| if (buf[0] != '0') { |
| value = true; |
| } |
| } |
| |
| return value; |
| } |
| |
| int BatteryMonitor::getIntField(const String8& path) { |
| const int SIZE = 128; |
| char buf[SIZE]; |
| |
| int value = 0; |
| if (readFromFile(path, buf, SIZE) > 0) { |
| value = strtol(buf, NULL, 0); |
| } |
| return value; |
| } |
| |
| bool BatteryMonitor::update(void) { |
| bool logthis; |
| |
| props.chargerAcOnline = false; |
| props.chargerUsbOnline = false; |
| props.chargerWirelessOnline = false; |
| props.batteryStatus = BATTERY_STATUS_UNKNOWN; |
| props.batteryHealth = BATTERY_HEALTH_UNKNOWN; |
| props.maxChargingCurrent = 0; |
| |
| if (!mHealthdConfig->batteryPresentPath.isEmpty()) |
| props.batteryPresent = getBooleanField(mHealthdConfig->batteryPresentPath); |
| else |
| props.batteryPresent = mBatteryDevicePresent; |
| |
| props.batteryLevel = mBatteryFixedCapacity ? |
| mBatteryFixedCapacity : |
| getIntField(mHealthdConfig->batteryCapacityPath); |
| props.batteryVoltage = getIntField(mHealthdConfig->batteryVoltagePath) / 1000; |
| |
| props.batteryTemperature = mBatteryFixedTemperature ? |
| mBatteryFixedTemperature : |
| getIntField(mHealthdConfig->batteryTemperaturePath); |
| |
| // For devices which do not have battery and are always plugged |
| // into power souce. |
| if (mAlwaysPluggedDevice) { |
| props.chargerAcOnline = true; |
| props.batteryPresent = true; |
| props.batteryStatus = BATTERY_STATUS_CHARGING; |
| props.batteryHealth = BATTERY_HEALTH_GOOD; |
| } |
| |
| const int SIZE = 128; |
| char buf[SIZE]; |
| String8 btech; |
| |
| if (readFromFile(mHealthdConfig->batteryStatusPath, buf, SIZE) > 0) |
| props.batteryStatus = getBatteryStatus(buf); |
| |
| if (readFromFile(mHealthdConfig->batteryHealthPath, buf, SIZE) > 0) |
| props.batteryHealth = getBatteryHealth(buf); |
| |
| if (readFromFile(mHealthdConfig->batteryTechnologyPath, buf, SIZE) > 0) |
| props.batteryTechnology = String8(buf); |
| |
| unsigned int i; |
| |
| for (i = 0; i < mChargerNames.size(); i++) { |
| String8 path; |
| path.appendFormat("%s/%s/online", POWER_SUPPLY_SYSFS_PATH, |
| mChargerNames[i].string()); |
| |
| if (readFromFile(path, buf, SIZE) > 0) { |
| if (buf[0] != '0') { |
| path.clear(); |
| path.appendFormat("%s/%s/type", POWER_SUPPLY_SYSFS_PATH, |
| mChargerNames[i].string()); |
| switch(readPowerSupplyType(path)) { |
| case ANDROID_POWER_SUPPLY_TYPE_AC: |
| props.chargerAcOnline = true; |
| break; |
| case ANDROID_POWER_SUPPLY_TYPE_USB: |
| props.chargerUsbOnline = true; |
| break; |
| case ANDROID_POWER_SUPPLY_TYPE_WIRELESS: |
| props.chargerWirelessOnline = true; |
| break; |
| default: |
| 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()); |
| if (access(path.string(), R_OK) == 0) { |
| int maxChargingCurrent = getIntField(path); |
| if (props.maxChargingCurrent < maxChargingCurrent) { |
| props.maxChargingCurrent = maxChargingCurrent; |
| } |
| } |
| } |
| } |
| } |
| |
| logthis = !healthd_board_battery_update(&props); |
| |
| if (logthis) { |
| char dmesgline[256]; |
| |
| if (props.batteryPresent) { |
| snprintf(dmesgline, sizeof(dmesgline), |
| "battery l=%d v=%d t=%s%d.%d h=%d st=%d", |
| props.batteryLevel, props.batteryVoltage, |
| props.batteryTemperature < 0 ? "-" : "", |
| abs(props.batteryTemperature / 10), |
| abs(props.batteryTemperature % 10), props.batteryHealth, |
| props.batteryStatus); |
| |
| if (!mHealthdConfig->batteryCurrentNowPath.isEmpty()) { |
| int c = getIntField(mHealthdConfig->batteryCurrentNowPath); |
| char b[20]; |
| |
| snprintf(b, sizeof(b), " c=%d", c / 1000); |
| strlcat(dmesgline, b, sizeof(dmesgline)); |
| } |
| } else { |
| snprintf(dmesgline, sizeof(dmesgline), |
| "battery none"); |
| } |
| |
| size_t len = strlen(dmesgline); |
| snprintf(dmesgline + len, sizeof(dmesgline) - len, " chg=%s%s%s", |
| props.chargerAcOnline ? "a" : "", |
| props.chargerUsbOnline ? "u" : "", |
| props.chargerWirelessOnline ? "w" : ""); |
| |
| log_time realtime(CLOCK_REALTIME); |
| time_t t = realtime.tv_sec; |
| struct tm *tmp = gmtime(&t); |
| if (tmp) { |
| static const char fmt[] = " %Y-%m-%d %H:%M:%S.XXXXXXXXX UTC"; |
| len = strlen(dmesgline); |
| if ((len < (sizeof(dmesgline) - sizeof(fmt) - 8)) // margin |
| && strftime(dmesgline + len, sizeof(dmesgline) - len, |
| fmt, tmp)) { |
| char *usec = strchr(dmesgline + len, 'X'); |
| if (usec) { |
| len = usec - dmesgline; |
| snprintf(dmesgline + len, sizeof(dmesgline) - len, |
| "%09u", realtime.tv_nsec); |
| usec[9] = ' '; |
| } |
| } |
| } |
| |
| KLOG_WARNING(LOG_TAG, "%s\n", dmesgline); |
| } |
| |
| healthd_mode_ops->battery_update(&props); |
| return props.chargerAcOnline | props.chargerUsbOnline | |
| props.chargerWirelessOnline; |
| } |
| |
| status_t BatteryMonitor::getProperty(int id, struct BatteryProperty *val) { |
| status_t ret = BAD_VALUE; |
| |
| val->valueInt64 = LONG_MIN; |
| |
| switch(id) { |
| case BATTERY_PROP_CHARGE_COUNTER: |
| if (!mHealthdConfig->batteryChargeCounterPath.isEmpty()) { |
| val->valueInt64 = |
| getIntField(mHealthdConfig->batteryChargeCounterPath); |
| ret = NO_ERROR; |
| } else { |
| ret = NAME_NOT_FOUND; |
| } |
| break; |
| |
| case BATTERY_PROP_CURRENT_NOW: |
| if (!mHealthdConfig->batteryCurrentNowPath.isEmpty()) { |
| val->valueInt64 = |
| getIntField(mHealthdConfig->batteryCurrentNowPath); |
| ret = NO_ERROR; |
| } else { |
| ret = NAME_NOT_FOUND; |
| } |
| break; |
| |
| case BATTERY_PROP_CURRENT_AVG: |
| if (!mHealthdConfig->batteryCurrentAvgPath.isEmpty()) { |
| val->valueInt64 = |
| getIntField(mHealthdConfig->batteryCurrentAvgPath); |
| ret = NO_ERROR; |
| } else { |
| ret = NAME_NOT_FOUND; |
| } |
| break; |
| |
| case BATTERY_PROP_CAPACITY: |
| if (!mHealthdConfig->batteryCapacityPath.isEmpty()) { |
| val->valueInt64 = |
| getIntField(mHealthdConfig->batteryCapacityPath); |
| ret = NO_ERROR; |
| } 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; |
| |
| default: |
| break; |
| } |
| |
| return ret; |
| } |
| |
| void BatteryMonitor::dumpState(int fd) { |
| int v; |
| char vs[128]; |
| |
| snprintf(vs, sizeof(vs), "ac: %d usb: %d wireless: %d current_max: %d\n", |
| props.chargerAcOnline, props.chargerUsbOnline, |
| props.chargerWirelessOnline, props.maxChargingCurrent); |
| 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.batteryVoltage, |
| props.batteryTemperature); |
| 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)); |
| } |
| } |
| |
| void BatteryMonitor::init(struct healthd_config *hc) { |
| String8 path; |
| char pval[PROPERTY_VALUE_MAX]; |
| |
| mHealthdConfig = hc; |
| DIR* dir = opendir(POWER_SUPPLY_SYSFS_PATH); |
| if (dir == NULL) { |
| KLOG_ERROR(LOG_TAG, "Could not open %s\n", POWER_SUPPLY_SYSFS_PATH); |
| } else { |
| struct dirent* entry; |
| |
| while ((entry = readdir(dir))) { |
| const char* name = entry->d_name; |
| |
| if (!strcmp(name, ".") || !strcmp(name, "..")) |
| 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: |
| 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: |
| 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; |
| } else { |
| path.clear(); |
| path.appendFormat("%s/%s/batt_vol", |
| POWER_SUPPLY_SYSFS_PATH, name); |
| if (access(path, R_OK) == 0) |
| mHealthdConfig->batteryVoltagePath = 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->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; |
| } 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); |
| } |
| |
| // 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; |
| mBatteryFixedCapacity = ALWAYS_PLUGGED_CAPACITY; |
| mBatteryFixedTemperature = FAKE_BATTERY_TEMPERATURE; |
| mAlwaysPluggedDevice = true; |
| } 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 |
