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