1 /* 2 * Copyright (C) 2013 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #ifndef _HEALTHD_H_ 18 #define _HEALTHD_H_ 19 20 #include <batteryservice/BatteryService.h> 21 #include <utils/String8.h> 22 23 // periodic_chores_interval_fast, periodic_chores_interval_slow: intervals at 24 // which healthd wakes up to poll health state and perform periodic chores, 25 // in units of seconds: 26 // 27 // periodic_chores_interval_fast is used while the device is not in 28 // suspend, or in suspend and connected to a charger (to watch for battery 29 // overheat due to charging). The default value is 60 (1 minute). Value 30 // -1 turns off periodic chores (and wakeups) in these conditions. 31 // 32 // periodic_chores_interval_slow is used when the device is in suspend and 33 // not connected to a charger (to watch for a battery drained to zero 34 // remaining capacity). The default value is 600 (10 minutes). Value -1 35 // tuns off periodic chores (and wakeups) in these conditions. 36 // 37 // power_supply sysfs attribute file paths. Set these to specific paths 38 // to use for the associated battery parameters. healthd will search for 39 // appropriate power_supply attribute files to use for any paths left empty: 40 // 41 // batteryStatusPath: charging status (POWER_SUPPLY_PROP_STATUS) 42 // batteryHealthPath: battery health (POWER_SUPPLY_PROP_HEALTH) 43 // batteryPresentPath: battery present (POWER_SUPPLY_PROP_PRESENT) 44 // batteryCapacityPath: remaining capacity (POWER_SUPPLY_PROP_CAPACITY) 45 // batteryVoltagePath: battery voltage (POWER_SUPPLY_PROP_VOLTAGE_NOW) 46 // batteryTemperaturePath: battery temperature (POWER_SUPPLY_PROP_TEMP) 47 // batteryTechnologyPath: battery technology (POWER_SUPPLY_PROP_TECHNOLOGY) 48 // batteryCurrentNowPath: battery current (POWER_SUPPLY_PROP_CURRENT_NOW) 49 // batteryChargeCounterPath: battery accumulated charge 50 // (POWER_SUPPLY_PROP_CHARGE_COUNTER) 51 52 struct healthd_config { 53 int periodic_chores_interval_fast; 54 int periodic_chores_interval_slow; 55 56 android::String8 batteryStatusPath; 57 android::String8 batteryHealthPath; 58 android::String8 batteryPresentPath; 59 android::String8 batteryCapacityPath; 60 android::String8 batteryVoltagePath; 61 android::String8 batteryTemperaturePath; 62 android::String8 batteryTechnologyPath; 63 android::String8 batteryCurrentNowPath; 64 android::String8 batteryChargeCounterPath; 65 }; 66 67 // The following are implemented in libhealthd_board to handle board-specific 68 // behavior. 69 // 70 // healthd_board_init() is called at startup time to modify healthd's 71 // configuration according to board-specific requirements. config 72 // points to the healthd configuration values described above. To use default 73 // values, this function can simply return without modifying the fields of the 74 // config parameter. 75 76 void healthd_board_init(struct healthd_config *config); 77 78 // Process updated battery property values. This function is called when 79 // the kernel sends updated battery status via a uevent from the power_supply 80 // subsystem, or when updated values are polled by healthd, as for periodic 81 // poll of battery state. 82 // 83 // props are the battery properties read from the kernel. These values may 84 // be modified in this call, prior to sending the modified values to the 85 // Android runtime. 86 // 87 // Return 0 to indicate the usual kernel log battery status heartbeat message 88 // is to be logged, or non-zero to prevent logging this information. 89 90 int healthd_board_battery_update(struct android::BatteryProperties *props); 91 92 #endif /* _HEALTHD_H_ */ 93
