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/* SPDX-License-Identifier: GPL-2.0-only / / * Universal power supply monitor class * * Copyright © 2007 Anton Vorontsov <cbou@mail.ru> * Copyright © 2004 Szabolcs Gyurko * Copyright © 2003 Ian Molton <spyro@f2s.com> * * Modified: 2004, Oct Szabolcs Gyurko / #ifndef __LINUX_POWER_SUPPLY_H__ #define __LINUX_POWER_SUPPLY_H__ #include <linux/device.h> #include <linux/workqueue.h> #include <linux/leds.h> #include <linux/spinlock.h> #include <linux/notifier.h> / * All voltages, currents, charges, energies, time and temperatures in uV, * µA, µAh, µWh, seconds and tenths of degree Celsius unless otherwise * stated. It's driver's job to convert its raw values to units in which * this class operates. / / * For systems where the charger determines the maximum battery capacity * the min and max fields should be used to present these values to user * space. Unused/unknown fields will not appear in sysfs. / enum { POWER_SUPPLY_STATUS_UNKNOWN = 0, POWER_SUPPLY_STATUS_CHARGING, POWER_SUPPLY_STATUS_DISCHARGING, POWER_SUPPLY_STATUS_NOT_CHARGING, POWER_SUPPLY_STATUS_FULL, }; / What algorithm is the charger using? / enum { POWER_SUPPLY_CHARGE_TYPE_UNKNOWN = 0, POWER_SUPPLY_CHARGE_TYPE_NONE, POWER_SUPPLY_CHARGE_TYPE_TRICKLE, / slow speed / POWER_SUPPLY_CHARGE_TYPE_FAST, / fast speed / POWER_SUPPLY_CHARGE_TYPE_STANDARD, / normal speed / POWER_SUPPLY_CHARGE_TYPE_ADAPTIVE, / dynamically adjusted speed / POWER_SUPPLY_CHARGE_TYPE_CUSTOM, / use CHARGE_CONTROL_* props / }; enum { POWER_SUPPLY_HEALTH_UNKNOWN = 0, POWER_SUPPLY_HEALTH_GOOD, POWER_SUPPLY_HEALTH_OVERHEAT, POWER_SUPPLY_HEALTH_DEAD, POWER_SUPPLY_HEALTH_OVERVOLTAGE, POWER_SUPPLY_HEALTH_UNSPEC_FAILURE, POWER_SUPPLY_HEALTH_COLD, POWER_SUPPLY_HEALTH_WATCHDOG_TIMER_EXPIRE, POWER_SUPPLY_HEALTH_SAFETY_TIMER_EXPIRE, POWER_SUPPLY_HEALTH_OVERCURRENT, }; enum { POWER_SUPPLY_TECHNOLOGY_UNKNOWN = 0, POWER_SUPPLY_TECHNOLOGY_NiMH, POWER_SUPPLY_TECHNOLOGY_LION, POWER_SUPPLY_TECHNOLOGY_LIPO, POWER_SUPPLY_TECHNOLOGY_LiFe, POWER_SUPPLY_TECHNOLOGY_NiCd, POWER_SUPPLY_TECHNOLOGY_LiMn, }; enum { POWER_SUPPLY_CAPACITY_LEVEL_UNKNOWN = 0, POWER_SUPPLY_CAPACITY_LEVEL_CRITICAL, POWER_SUPPLY_CAPACITY_LEVEL_LOW, POWER_SUPPLY_CAPACITY_LEVEL_NORMAL, POWER_SUPPLY_CAPACITY_LEVEL_HIGH, POWER_SUPPLY_CAPACITY_LEVEL_FULL, }; enum { POWER_SUPPLY_SCOPE_UNKNOWN = 0, POWER_SUPPLY_SCOPE_SYSTEM, POWER_SUPPLY_SCOPE_DEVICE, }; enum power_supply_property { / Properties of type `int' / POWER_SUPPLY_PROP_STATUS = 0, POWER_SUPPLY_PROP_CHARGE_TYPE, POWER_SUPPLY_PROP_HEALTH, POWER_SUPPLY_PROP_PRESENT, POWER_SUPPLY_PROP_ONLINE, POWER_SUPPLY_PROP_AUTHENTIC, POWER_SUPPLY_PROP_TECHNOLOGY, POWER_SUPPLY_PROP_CYCLE_COUNT, POWER_SUPPLY_PROP_VOLTAGE_MAX, POWER_SUPPLY_PROP_VOLTAGE_MIN, POWER_SUPPLY_PROP_VOLTAGE_MAX_DESIGN, POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN, POWER_SUPPLY_PROP_VOLTAGE_NOW, POWER_SUPPLY_PROP_VOLTAGE_AVG, POWER_SUPPLY_PROP_VOLTAGE_OCV, POWER_SUPPLY_PROP_VOLTAGE_BOOT, POWER_SUPPLY_PROP_CURRENT_MAX, POWER_SUPPLY_PROP_CURRENT_NOW, POWER_SUPPLY_PROP_CURRENT_AVG, POWER_SUPPLY_PROP_CURRENT_BOOT, POWER_SUPPLY_PROP_POWER_NOW, POWER_SUPPLY_PROP_POWER_AVG, POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN, POWER_SUPPLY_PROP_CHARGE_EMPTY_DESIGN, POWER_SUPPLY_PROP_CHARGE_FULL, POWER_SUPPLY_PROP_CHARGE_EMPTY, POWER_SUPPLY_PROP_CHARGE_NOW, POWER_SUPPLY_PROP_CHARGE_AVG, POWER_SUPPLY_PROP_CHARGE_COUNTER, POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT, POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT_MAX, POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE, POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE_MAX, POWER_SUPPLY_PROP_CHARGE_CONTROL_LIMIT, POWER_SUPPLY_PROP_CHARGE_CONTROL_LIMIT_MAX, POWER_SUPPLY_PROP_CHARGE_CONTROL_START_THRESHOLD, / in percents! / POWER_SUPPLY_PROP_CHARGE_CONTROL_END_THRESHOLD, / in percents! / POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT, POWER_SUPPLY_PROP_INPUT_VOLTAGE_LIMIT, POWER_SUPPLY_PROP_INPUT_POWER_LIMIT, POWER_SUPPLY_PROP_ENERGY_FULL_DESIGN, POWER_SUPPLY_PROP_ENERGY_EMPTY_DESIGN, POWER_SUPPLY_PROP_ENERGY_FULL, POWER_SUPPLY_PROP_ENERGY_EMPTY, POWER_SUPPLY_PROP_ENERGY_NOW, POWER_SUPPLY_PROP_ENERGY_AVG, POWER_SUPPLY_PROP_CAPACITY, / in percents! / POWER_SUPPLY_PROP_CAPACITY_ALERT_MIN, / in percents! / POWER_SUPPLY_PROP_CAPACITY_ALERT_MAX, / in percents! / POWER_SUPPLY_PROP_CAPACITY_LEVEL, POWER_SUPPLY_PROP_TEMP, POWER_SUPPLY_PROP_TEMP_MAX, POWER_SUPPLY_PROP_TEMP_MIN, POWER_SUPPLY_PROP_TEMP_ALERT_MIN, POWER_SUPPLY_PROP_TEMP_ALERT_MAX, POWER_SUPPLY_PROP_TEMP_AMBIENT, POWER_SUPPLY_PROP_TEMP_AMBIENT_ALERT_MIN, POWER_SUPPLY_PROP_TEMP_AMBIENT_ALERT_MAX, POWER_SUPPLY_PROP_TIME_TO_EMPTY_NOW, POWER_SUPPLY_PROP_TIME_TO_EMPTY_AVG, POWER_SUPPLY_PROP_TIME_TO_FULL_NOW, POWER_SUPPLY_PROP_TIME_TO_FULL_AVG, POWER_SUPPLY_PROP_TYPE, / use power_supply.type instead / POWER_SUPPLY_PROP_USB_TYPE, POWER_SUPPLY_PROP_SCOPE, POWER_SUPPLY_PROP_PRECHARGE_CURRENT, POWER_SUPPLY_PROP_CHARGE_TERM_CURRENT, POWER_SUPPLY_PROP_CALIBRATE, / Properties of type `const char ' / POWER_SUPPLY_PROP_MODEL_NAME, POWER_SUPPLY_PROP_MANUFACTURER, POWER_SUPPLY_PROP_SERIAL_NUMBER, }; enum power_supply_type { POWER_SUPPLY_TYPE_UNKNOWN = 0, POWER_SUPPLY_TYPE_BATTERY, POWER_SUPPLY_TYPE_UPS, POWER_SUPPLY_TYPE_MAINS, POWER_SUPPLY_TYPE_USB, /* Standard Downstream Port / POWER_SUPPLY_TYPE_USB_DCP, / Dedicated Charging Port / POWER_SUPPLY_TYPE_USB_CDP, / Charging Downstream Port / POWER_SUPPLY_TYPE_USB_ACA, / Accessory Charger Adapters / POWER_SUPPLY_TYPE_USB_TYPE_C, / Type C Port / POWER_SUPPLY_TYPE_USB_PD, / Power Delivery Port / POWER_SUPPLY_TYPE_USB_PD_DRP, / PD Dual Role Port / POWER_SUPPLY_TYPE_APPLE_BRICK_ID, / Apple Charging Method / }; enum power_supply_usb_type { POWER_SUPPLY_USB_TYPE_UNKNOWN = 0, POWER_SUPPLY_USB_TYPE_SDP, / Standard Downstream Port / POWER_SUPPLY_USB_TYPE_DCP, / Dedicated Charging Port / POWER_SUPPLY_USB_TYPE_CDP, / Charging Downstream Port / POWER_SUPPLY_USB_TYPE_ACA, / Accessory Charger Adapters / POWER_SUPPLY_USB_TYPE_C, / Type C Port / POWER_SUPPLY_USB_TYPE_PD, / Power Delivery Port / POWER_SUPPLY_USB_TYPE_PD_DRP, / PD Dual Role Port / POWER_SUPPLY_USB_TYPE_PD_PPS, / PD Programmable Power Supply / POWER_SUPPLY_USB_TYPE_APPLE_BRICK_ID, / Apple Charging Method / }; enum power_supply_notifier_events { PSY_EVENT_PROP_CHANGED, }; union power_supply_propval { int intval; const char strval; }; struct device_node; struct power_supply; /* Run-time specific power supply configuration / struct power_supply_config { struct device_node of_node; struct fwnode_handle fwnode; / Driver private data / void drv_data; /* Device specific sysfs attributes / const struct attribute_group attr_grp; char supplied_to; size_t num_supplicants; }; / Description of power supply / struct power_supply_desc { const char name; enum power_supply_type type; enum power_supply_usb_type usb_types; size_t num_usb_types; enum power_supply_property properties; size_t num_properties; /* * Functions for drivers implementing power supply class. * These shouldn't be called directly by other drivers for accessing * this power supply. Instead use power_supply_() functions (for example power_supply_get_property()). / int (get_property)(struct power_supply psy, enum power_supply_property psp, union power_supply_propval val); int (set_property)(struct power_supply psy, enum power_supply_property psp, const union power_supply_propval val); / * property_is_writeable() will be called during registration * of power supply. If this happens during device probe then it must * not access internal data of device (because probe did not end). / int (property_is_writeable)(struct power_supply psy, enum power_supply_property psp); void (external_power_changed)(struct power_supply psy); void (set_charged)(struct power_supply psy); / * Set if thermal zone should not be created for this power supply. * For example for virtual supplies forwarding calls to actual * sensors or other supplies. / bool no_thermal; / For APM emulation, think legacy userspace. / int use_for_apm; }; struct power_supply { const struct power_supply_desc desc; char supplied_to; size_t num_supplicants; char supplied_from; size_t num_supplies; struct device_node of_node; / Driver private data / void drv_data; /* private / struct device dev; struct work_struct changed_work; struct delayed_work deferred_register_work; spinlock_t changed_lock; bool changed; bool initialized; bool removing; atomic_t use_cnt; #ifdef CONFIG_THERMAL struct thermal_zone_device tzd; struct thermal_cooling_device tcd; #endif #ifdef CONFIG_LEDS_TRIGGERS struct led_trigger charging_full_trig; char charging_full_trig_name; struct led_trigger charging_trig; char charging_trig_name; struct led_trigger full_trig; char full_trig_name; struct led_trigger online_trig; char online_trig_name; struct led_trigger charging_blink_full_solid_trig; char charging_blink_full_solid_trig_name; #endif }; / * This is recommended structure to specify static power supply parameters. * Generic one, parametrizable for different power supplies. Power supply * class itself does not use it, but that's what implementing most platform * drivers, should try reuse for consistency. / struct power_supply_info { const char name; int technology; int voltage_max_design; int voltage_min_design; int charge_full_design; int charge_empty_design; int energy_full_design; int energy_empty_design; int use_for_apm; }; struct power_supply_battery_ocv_table { int ocv; /* microVolts / int capacity; / percent / }; #define POWER_SUPPLY_OCV_TEMP_MAX 20 / * This is the recommended struct to manage static battery parameters, * populated by power_supply_get_battery_info(). Most platform drivers should * use these for consistency. * Its field names must correspond to elements in enum power_supply_property. * The default field value is -EINVAL. * Power supply class itself doesn't use this. / struct power_supply_battery_info { int energy_full_design_uwh; / microWatt-hours / int charge_full_design_uah; / microAmp-hours / int voltage_min_design_uv; / microVolts / int voltage_max_design_uv; / microVolts / int precharge_current_ua; / microAmps / int charge_term_current_ua; / microAmps / int constant_charge_current_max_ua; / microAmps / int constant_charge_voltage_max_uv; / microVolts / int factory_internal_resistance_uohm; / microOhms / int ocv_temp[POWER_SUPPLY_OCV_TEMP_MAX];/ celsius / struct power_supply_battery_ocv_table ocv_table[POWER_SUPPLY_OCV_TEMP_MAX]; int ocv_table_size[POWER_SUPPLY_OCV_TEMP_MAX]; }; extern struct atomic_notifier_head power_supply_notifier; extern int power_supply_reg_notifier(struct notifier_block nb); extern void power_supply_unreg_notifier(struct notifier_block nb); extern struct power_supply power_supply_get_by_name(const char name); extern void power_supply_put(struct power_supply psy); #ifdef CONFIG_OF extern struct power_supply power_supply_get_by_phandle(struct device_node np, const char property); extern struct power_supply devm_power_supply_get_by_phandle( struct device dev, const char property); #else / !CONFIG_OF / static inline struct power_supply power_supply_get_by_phandle(struct device_node np, const char property) { return NULL; } static inline struct power_supply * devm_power_supply_get_by_phandle(struct device dev, const char property) { return NULL; } #endif /* CONFIG_OF / extern int power_supply_get_battery_info(struct power_supply psy, struct power_supply_battery_info info); extern void power_supply_put_battery_info(struct power_supply psy, struct power_supply_battery_info info); extern int power_supply_ocv2cap_simple(struct power_supply_battery_ocv_table table, int table_len, int ocv); extern struct power_supply_battery_ocv_table * power_supply_find_ocv2cap_table(struct power_supply_battery_info info, int temp, int table_len); extern int power_supply_batinfo_ocv2cap(struct power_supply_battery_info info, int ocv, int temp); extern void power_supply_changed(struct power_supply psy); extern int power_supply_am_i_supplied(struct power_supply psy); int power_supply_get_property_from_supplier(struct power_supply psy, enum power_supply_property psp, union power_supply_propval val); extern int power_supply_set_battery_charged(struct power_supply psy); #ifdef CONFIG_POWER_SUPPLY extern int power_supply_is_system_supplied(void); #else static inline int power_supply_is_system_supplied(void) { return -ENOSYS; } #endif extern int power_supply_get_property(struct power_supply psy, enum power_supply_property psp, union power_supply_propval val); extern int power_supply_set_property(struct power_supply psy, enum power_supply_property psp, const union power_supply_propval val); extern int power_supply_property_is_writeable(struct power_supply psy, enum power_supply_property psp); extern void power_supply_external_power_changed(struct power_supply psy); extern struct power_supply __must_check power_supply_register(struct device parent, const struct power_supply_desc desc, const struct power_supply_config cfg); extern struct power_supply __must_check power_supply_register_no_ws(struct device parent, const struct power_supply_desc desc, const struct power_supply_config cfg); extern struct power_supply __must_check devm_power_supply_register(struct device parent, const struct power_supply_desc desc, const struct power_supply_config cfg); extern struct power_supply __must_check devm_power_supply_register_no_ws(struct device parent, const struct power_supply_desc desc, const struct power_supply_config cfg); extern void power_supply_unregister(struct power_supply psy); extern int power_supply_powers(struct power_supply psy, struct device dev); #define to_power_supply(device) container_of(device, struct power_supply, dev) extern void power_supply_get_drvdata(struct power_supply psy); / For APM emulation, think legacy userspace. / extern struct class power_supply_class; static inline bool power_supply_is_amp_property(enum power_supply_property psp) { switch (psp) { case POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN: case POWER_SUPPLY_PROP_CHARGE_EMPTY_DESIGN: case POWER_SUPPLY_PROP_CHARGE_FULL: case POWER_SUPPLY_PROP_CHARGE_EMPTY: case POWER_SUPPLY_PROP_CHARGE_NOW: case POWER_SUPPLY_PROP_CHARGE_AVG: case POWER_SUPPLY_PROP_CHARGE_COUNTER: case POWER_SUPPLY_PROP_PRECHARGE_CURRENT: case POWER_SUPPLY_PROP_CHARGE_TERM_CURRENT: case POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT: case POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT_MAX: case POWER_SUPPLY_PROP_CURRENT_MAX: case POWER_SUPPLY_PROP_CURRENT_NOW: case POWER_SUPPLY_PROP_CURRENT_AVG: case POWER_SUPPLY_PROP_CURRENT_BOOT: return 1; default: break; } return 0; } static inline bool power_supply_is_watt_property(enum power_supply_property psp) { switch (psp) { case POWER_SUPPLY_PROP_ENERGY_FULL_DESIGN: case POWER_SUPPLY_PROP_ENERGY_EMPTY_DESIGN: case POWER_SUPPLY_PROP_ENERGY_FULL: case POWER_SUPPLY_PROP_ENERGY_EMPTY: case POWER_SUPPLY_PROP_ENERGY_NOW: case POWER_SUPPLY_PROP_ENERGY_AVG: case POWER_SUPPLY_PROP_VOLTAGE_MAX: case POWER_SUPPLY_PROP_VOLTAGE_MIN: case POWER_SUPPLY_PROP_VOLTAGE_MAX_DESIGN: case POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN: case POWER_SUPPLY_PROP_VOLTAGE_NOW: case POWER_SUPPLY_PROP_VOLTAGE_AVG: case POWER_SUPPLY_PROP_VOLTAGE_OCV: case POWER_SUPPLY_PROP_VOLTAGE_BOOT: case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE: case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE_MAX: case POWER_SUPPLY_PROP_POWER_NOW: return 1; default: break; } return 0; } #ifdef CONFIG_POWER_SUPPLY_HWMON int power_supply_add_hwmon_sysfs(struct power_supply psy); void power_supply_remove_hwmon_sysfs(struct power_supply psy); #else static inline int power_supply_add_hwmon_sysfs(struct power_supply psy) { return 0; } static inline void power_supply_remove_hwmon_sysfs(struct power_supply psy) {} #endif #endif /* __LINUX_POWER_SUPPLY_H__ */

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