119 lines
4.8 KiB
C
119 lines
4.8 KiB
C
/*
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* Copyright (C) 2013 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef _HEALTHD_H_
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#define _HEALTHD_H_
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#include <batteryservice/BatteryService.h>
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#include <utils/Errors.h>
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#include <utils/String8.h>
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// periodic_chores_interval_fast, periodic_chores_interval_slow: intervals at
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// which healthd wakes up to poll health state and perform periodic chores,
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// in units of seconds:
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//
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// periodic_chores_interval_fast is used while the device is not in
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// suspend, or in suspend and connected to a charger (to watch for battery
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// overheat due to charging). The default value is 60 (1 minute). Value
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// -1 turns off periodic chores (and wakeups) in these conditions.
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//
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// periodic_chores_interval_slow is used when the device is in suspend and
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// not connected to a charger (to watch for a battery drained to zero
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// remaining capacity). The default value is 600 (10 minutes). Value -1
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// tuns off periodic chores (and wakeups) in these conditions.
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//
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// power_supply sysfs attribute file paths. Set these to specific paths
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// to use for the associated battery parameters. healthd will search for
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// appropriate power_supply attribute files to use for any paths left empty:
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//
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// batteryStatusPath: charging status (POWER_SUPPLY_PROP_STATUS)
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// batteryHealthPath: battery health (POWER_SUPPLY_PROP_HEALTH)
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// batteryPresentPath: battery present (POWER_SUPPLY_PROP_PRESENT)
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// batteryCapacityPath: remaining capacity (POWER_SUPPLY_PROP_CAPACITY)
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// batteryVoltagePath: battery voltage (POWER_SUPPLY_PROP_VOLTAGE_NOW)
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// batteryTemperaturePath: battery temperature (POWER_SUPPLY_PROP_TEMP)
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// batteryTechnologyPath: battery technology (POWER_SUPPLY_PROP_TECHNOLOGY)
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// batteryCurrentNowPath: battery current (POWER_SUPPLY_PROP_CURRENT_NOW)
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// batteryChargeCounterPath: battery accumulated charge
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// (POWER_SUPPLY_PROP_CHARGE_COUNTER)
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struct healthd_config {
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int periodic_chores_interval_fast;
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int periodic_chores_interval_slow;
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android::String8 batteryStatusPath;
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android::String8 batteryHealthPath;
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android::String8 batteryPresentPath;
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android::String8 batteryCapacityPath;
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android::String8 batteryVoltagePath;
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android::String8 batteryTemperaturePath;
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android::String8 batteryTechnologyPath;
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android::String8 batteryCurrentNowPath;
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android::String8 batteryCurrentAvgPath;
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android::String8 batteryChargeCounterPath;
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};
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// Global helper functions
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int healthd_register_event(int fd, void (*handler)(uint32_t));
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void healthd_battery_update();
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android::status_t healthd_get_property(int id,
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struct android::BatteryProperty *val);
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void healthd_dump_battery_state(int fd);
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struct healthd_mode_ops {
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void (*init)(struct healthd_config *config);
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int (*preparetowait)(void);
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void (*heartbeat)(void);
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void (*battery_update)(struct android::BatteryProperties *props);
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};
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extern struct healthd_mode_ops *healthd_mode_ops;
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// Charger mode
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void healthd_mode_charger_init(struct healthd_config *config);
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int healthd_mode_charger_preparetowait(void);
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void healthd_mode_charger_heartbeat(void);
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void healthd_mode_charger_battery_update(
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struct android::BatteryProperties *props);
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// The following are implemented in libhealthd_board to handle board-specific
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// behavior.
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//
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// healthd_board_init() is called at startup time to modify healthd's
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// configuration according to board-specific requirements. config
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// points to the healthd configuration values described above. To use default
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// values, this function can simply return without modifying the fields of the
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// config parameter.
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void healthd_board_init(struct healthd_config *config);
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// Process updated battery property values. This function is called when
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// the kernel sends updated battery status via a uevent from the power_supply
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// subsystem, or when updated values are polled by healthd, as for periodic
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// poll of battery state.
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//
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// props are the battery properties read from the kernel. These values may
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// be modified in this call, prior to sending the modified values to the
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// Android runtime.
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//
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// Return 0 to indicate the usual kernel log battery status heartbeat message
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// is to be logged, or non-zero to prevent logging this information.
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int healthd_board_battery_update(struct android::BatteryProperties *props);
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#endif /* _HEALTHD_H_ */
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