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 52struct 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 76void 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 90int healthd_board_battery_update(struct android::BatteryProperties *props); 91 92#endif /* _HEALTHD_H_ */ 93