| /* |
| * 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 "BatteryPropertiesRegistrar.h" |
| |
| #include <dirent.h> |
| #include <errno.h> |
| #include <fcntl.h> |
| #include <stdio.h> |
| #include <stdlib.h> |
| #include <unistd.h> |
| #include <batteryservice/BatteryService.h> |
| #include <cutils/klog.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 |
| |
| namespace android { |
| |
| struct sysfsStringEnumMap { |
| 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) { |
| struct BatteryProperties props; |
| bool logthis; |
| |
| props.chargerAcOnline = false; |
| props.chargerUsbOnline = false; |
| props.chargerWirelessOnline = false; |
| props.batteryStatus = BATTERY_STATUS_UNKNOWN; |
| props.batteryHealth = BATTERY_HEALTH_UNKNOWN; |
| props.batteryCurrentNow = INT_MIN; |
| props.batteryChargeCounter = INT_MIN; |
| |
| if (!mHealthdConfig->batteryPresentPath.isEmpty()) |
| props.batteryPresent = getBooleanField(mHealthdConfig->batteryPresentPath); |
| else |
| props.batteryPresent = true; |
| |
| props.batteryLevel = getIntField(mHealthdConfig->batteryCapacityPath); |
| props.batteryVoltage = getIntField(mHealthdConfig->batteryVoltagePath) / 1000; |
| |
| if (!mHealthdConfig->batteryCurrentNowPath.isEmpty()) |
| props.batteryCurrentNow = getIntField(mHealthdConfig->batteryCurrentNowPath); |
| |
| if (!mHealthdConfig->batteryChargeCounterPath.isEmpty()) |
| props.batteryChargeCounter = getIntField(mHealthdConfig->batteryChargeCounterPath); |
| |
| props.batteryTemperature = getIntField(mHealthdConfig->batteryTemperaturePath); |
| |
| 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()); |
| } |
| } |
| } |
| } |
| |
| logthis = !healthd_board_battery_update(&props); |
| |
| if (logthis) { |
| char dmesgline[256]; |
| 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()) { |
| char b[20]; |
| |
| snprintf(b, sizeof(b), " c=%d", props.batteryCurrentNow / 1000); |
| strlcat(dmesgline, b, sizeof(dmesgline)); |
| } |
| |
| KLOG_INFO(LOG_TAG, "%s chg=%s%s%s\n", dmesgline, |
| props.chargerAcOnline ? "a" : "", |
| props.chargerUsbOnline ? "u" : "", |
| props.chargerWirelessOnline ? "w" : ""); |
| } |
| |
| if (mBatteryPropertiesRegistrar != NULL) |
| mBatteryPropertiesRegistrar->notifyListeners(props); |
| |
| return props.chargerAcOnline | props.chargerUsbOnline | |
| props.chargerWirelessOnline; |
| } |
| |
| void BatteryMonitor::init(struct healthd_config *hc, bool nosvcmgr) { |
| String8 path; |
| |
| 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; |
| |
| char buf[20]; |
| // 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: |
| 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->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); |
| } |
| |
| if (!mChargerNames.size()) |
| KLOG_ERROR(LOG_TAG, "No charger supplies found\n"); |
| 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 (nosvcmgr == false) { |
| mBatteryPropertiesRegistrar = new BatteryPropertiesRegistrar(this); |
| mBatteryPropertiesRegistrar->publish(); |
| } |
| } |
| |
| }; // namespace android |
