include/linux/power_supply.h

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2 /*
   3  *  Universal power supply monitor class
   4  *
   5  *  Copyright © 2007  Anton Vorontsov <cbou@mail.ru>
   6  *  Copyright © 2004  Szabolcs Gyurko
   7  *  Copyright © 2003  Ian Molton <spyro@f2s.com>
   8  *
   9  *  Modified: 2004, Oct     Szabolcs Gyurko
  10  */
  11
  12 #ifndef __LINUX_POWER_SUPPLY_H__
  13 #define __LINUX_POWER_SUPPLY_H__
  14
  15 #include <linux/device.h>
  16 #include <linux/workqueue.h>
  17 #include <linux/leds.h>
  18 #include <linux/spinlock.h>
  19 #include <linux/notifier.h>
  20
  21 /*
  22  * All voltages, currents, charges, energies, time and temperatures in uV,
  23  * µA, µAh, µWh, seconds and tenths of degree Celsius unless otherwise
  24  * stated. It's driver's job to convert its raw values to units in which
  25  * this class operates.
  26  */
  27
  28 /*
  29  * For systems where the charger determines the maximum battery capacity
  30  * the min and max fields should be used to present these values to user
  31  * space. Unused/unknown fields will not appear in sysfs.
  32  */
  33
  34 enum {
  35         POWER_SUPPLY_STATUS_UNKNOWN = 0,
  36         POWER_SUPPLY_STATUS_CHARGING,
  37         POWER_SUPPLY_STATUS_DISCHARGING,
  38         POWER_SUPPLY_STATUS_NOT_CHARGING,
  39         POWER_SUPPLY_STATUS_FULL,
  40 };
  41
  42 /* What algorithm is the charger using? */
  43 enum {
  44         POWER_SUPPLY_CHARGE_TYPE_UNKNOWN = 0,
  45         POWER_SUPPLY_CHARGE_TYPE_NONE,
  46         POWER_SUPPLY_CHARGE_TYPE_TRICKLE,       /* slow speed */
  47         POWER_SUPPLY_CHARGE_TYPE_FAST,          /* fast speed */
  48         POWER_SUPPLY_CHARGE_TYPE_STANDARD,      /* normal speed */
  49         POWER_SUPPLY_CHARGE_TYPE_ADAPTIVE,      /* dynamically adjusted speed */
  50         POWER_SUPPLY_CHARGE_TYPE_CUSTOM,        /* use CHARGE_CONTROL_* props */
  51 };
  52
  53 enum {
  54         POWER_SUPPLY_HEALTH_UNKNOWN = 0,
  55         POWER_SUPPLY_HEALTH_GOOD,
  56         POWER_SUPPLY_HEALTH_OVERHEAT,
  57         POWER_SUPPLY_HEALTH_DEAD,
  58         POWER_SUPPLY_HEALTH_OVERVOLTAGE,
  59         POWER_SUPPLY_HEALTH_UNSPEC_FAILURE,
  60         POWER_SUPPLY_HEALTH_COLD,
  61         POWER_SUPPLY_HEALTH_WATCHDOG_TIMER_EXPIRE,
  62         POWER_SUPPLY_HEALTH_SAFETY_TIMER_EXPIRE,
  63         POWER_SUPPLY_HEALTH_OVERCURRENT,
  64         POWER_SUPPLY_HEALTH_CALIBRATION_REQUIRED,
  65 };
  66
  67 enum {
  68         POWER_SUPPLY_TECHNOLOGY_UNKNOWN = 0,
  69         POWER_SUPPLY_TECHNOLOGY_NiMH,
  70         POWER_SUPPLY_TECHNOLOGY_LION,
  71         POWER_SUPPLY_TECHNOLOGY_LIPO,
  72         POWER_SUPPLY_TECHNOLOGY_LiFe,
  73         POWER_SUPPLY_TECHNOLOGY_NiCd,
  74         POWER_SUPPLY_TECHNOLOGY_LiMn,
  75 };
  76
  77 enum {
  78         POWER_SUPPLY_CAPACITY_LEVEL_UNKNOWN = 0,
  79         POWER_SUPPLY_CAPACITY_LEVEL_CRITICAL,
  80         POWER_SUPPLY_CAPACITY_LEVEL_LOW,
  81         POWER_SUPPLY_CAPACITY_LEVEL_NORMAL,
  82         POWER_SUPPLY_CAPACITY_LEVEL_HIGH,
  83         POWER_SUPPLY_CAPACITY_LEVEL_FULL,
  84 };
  85
  86 enum {
  87         POWER_SUPPLY_SCOPE_UNKNOWN = 0,
  88         POWER_SUPPLY_SCOPE_SYSTEM,
  89         POWER_SUPPLY_SCOPE_DEVICE,
  90 };
  91
  92 enum power_supply_property {
  93         /* Properties of type `int' */
  94         POWER_SUPPLY_PROP_STATUS = 0,
  95         POWER_SUPPLY_PROP_CHARGE_TYPE,
  96         POWER_SUPPLY_PROP_HEALTH,
  97         POWER_SUPPLY_PROP_PRESENT,
  98         POWER_SUPPLY_PROP_ONLINE,
  99         POWER_SUPPLY_PROP_AUTHENTIC,
 100         POWER_SUPPLY_PROP_TECHNOLOGY,
 101         POWER_SUPPLY_PROP_CYCLE_COUNT,
 102         POWER_SUPPLY_PROP_VOLTAGE_MAX,
 103         POWER_SUPPLY_PROP_VOLTAGE_MIN,
 104         POWER_SUPPLY_PROP_VOLTAGE_MAX_DESIGN,
 105         POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN,
 106         POWER_SUPPLY_PROP_VOLTAGE_NOW,
 107         POWER_SUPPLY_PROP_VOLTAGE_AVG,
 108         POWER_SUPPLY_PROP_VOLTAGE_OCV,
 109         POWER_SUPPLY_PROP_VOLTAGE_BOOT,
 110         POWER_SUPPLY_PROP_CURRENT_MAX,
 111         POWER_SUPPLY_PROP_CURRENT_NOW,
 112         POWER_SUPPLY_PROP_CURRENT_AVG,
 113         POWER_SUPPLY_PROP_CURRENT_BOOT,
 114         POWER_SUPPLY_PROP_POWER_NOW,
 115         POWER_SUPPLY_PROP_POWER_AVG,
 116         POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN,
 117         POWER_SUPPLY_PROP_CHARGE_EMPTY_DESIGN,
 118         POWER_SUPPLY_PROP_CHARGE_FULL,
 119         POWER_SUPPLY_PROP_CHARGE_EMPTY,
 120         POWER_SUPPLY_PROP_CHARGE_NOW,
 121         POWER_SUPPLY_PROP_CHARGE_AVG,
 122         POWER_SUPPLY_PROP_CHARGE_COUNTER,
 123         POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT,
 124         POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT_MAX,
 125         POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE,
 126         POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE_MAX,
 127         POWER_SUPPLY_PROP_CHARGE_CONTROL_LIMIT,
 128         POWER_SUPPLY_PROP_CHARGE_CONTROL_LIMIT_MAX,
 129         POWER_SUPPLY_PROP_CHARGE_CONTROL_START_THRESHOLD, /* in percents! */
 130         POWER_SUPPLY_PROP_CHARGE_CONTROL_END_THRESHOLD, /* in percents! */
 131         POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT,
 132         POWER_SUPPLY_PROP_INPUT_VOLTAGE_LIMIT,
 133         POWER_SUPPLY_PROP_INPUT_POWER_LIMIT,
 134         POWER_SUPPLY_PROP_ENERGY_FULL_DESIGN,
 135         POWER_SUPPLY_PROP_ENERGY_EMPTY_DESIGN,
 136         POWER_SUPPLY_PROP_ENERGY_FULL,
 137         POWER_SUPPLY_PROP_ENERGY_EMPTY,
 138         POWER_SUPPLY_PROP_ENERGY_NOW,
 139         POWER_SUPPLY_PROP_ENERGY_AVG,
 140         POWER_SUPPLY_PROP_CAPACITY, /* in percents! */
 141         POWER_SUPPLY_PROP_CAPACITY_ALERT_MIN, /* in percents! */
 142         POWER_SUPPLY_PROP_CAPACITY_ALERT_MAX, /* in percents! */
 143         POWER_SUPPLY_PROP_CAPACITY_ERROR_MARGIN, /* in percents! */
 144         POWER_SUPPLY_PROP_CAPACITY_LEVEL,
 145         POWER_SUPPLY_PROP_TEMP,
 146         POWER_SUPPLY_PROP_TEMP_MAX,
 147         POWER_SUPPLY_PROP_TEMP_MIN,
 148         POWER_SUPPLY_PROP_TEMP_ALERT_MIN,
 149         POWER_SUPPLY_PROP_TEMP_ALERT_MAX,
 150         POWER_SUPPLY_PROP_TEMP_AMBIENT,
 151         POWER_SUPPLY_PROP_TEMP_AMBIENT_ALERT_MIN,
 152         POWER_SUPPLY_PROP_TEMP_AMBIENT_ALERT_MAX,
 153         POWER_SUPPLY_PROP_TIME_TO_EMPTY_NOW,
 154         POWER_SUPPLY_PROP_TIME_TO_EMPTY_AVG,
 155         POWER_SUPPLY_PROP_TIME_TO_FULL_NOW,
 156         POWER_SUPPLY_PROP_TIME_TO_FULL_AVG,
 157         POWER_SUPPLY_PROP_TYPE, /* use power_supply.type instead */
 158         POWER_SUPPLY_PROP_USB_TYPE,
 159         POWER_SUPPLY_PROP_SCOPE,
 160         POWER_SUPPLY_PROP_PRECHARGE_CURRENT,
 161         POWER_SUPPLY_PROP_CHARGE_TERM_CURRENT,
 162         POWER_SUPPLY_PROP_CALIBRATE,
 163         POWER_SUPPLY_PROP_MANUFACTURE_YEAR,
 164         POWER_SUPPLY_PROP_MANUFACTURE_MONTH,
 165         POWER_SUPPLY_PROP_MANUFACTURE_DAY,
 166         /* Properties of type `const char *' */
 167         POWER_SUPPLY_PROP_MODEL_NAME,
 168         POWER_SUPPLY_PROP_MANUFACTURER,
 169         POWER_SUPPLY_PROP_SERIAL_NUMBER,
 170 };
 171
 172 enum power_supply_type {
 173         POWER_SUPPLY_TYPE_UNKNOWN = 0,
 174         POWER_SUPPLY_TYPE_BATTERY,
 175         POWER_SUPPLY_TYPE_UPS,
 176         POWER_SUPPLY_TYPE_MAINS,
 177         POWER_SUPPLY_TYPE_USB,                  /* Standard Downstream Port */
 178         POWER_SUPPLY_TYPE_USB_DCP,              /* Dedicated Charging Port */
 179         POWER_SUPPLY_TYPE_USB_CDP,              /* Charging Downstream Port */
 180         POWER_SUPPLY_TYPE_USB_ACA,              /* Accessory Charger Adapters */
 181         POWER_SUPPLY_TYPE_USB_TYPE_C,           /* Type C Port */
 182         POWER_SUPPLY_TYPE_USB_PD,               /* Power Delivery Port */
 183         POWER_SUPPLY_TYPE_USB_PD_DRP,           /* PD Dual Role Port */
 184         POWER_SUPPLY_TYPE_APPLE_BRICK_ID,       /* Apple Charging Method */
 185 };
 186
 187 enum power_supply_usb_type {
 188         POWER_SUPPLY_USB_TYPE_UNKNOWN = 0,
 189         POWER_SUPPLY_USB_TYPE_SDP,              /* Standard Downstream Port */
 190         POWER_SUPPLY_USB_TYPE_DCP,              /* Dedicated Charging Port */
 191         POWER_SUPPLY_USB_TYPE_CDP,              /* Charging Downstream Port */
 192         POWER_SUPPLY_USB_TYPE_ACA,              /* Accessory Charger Adapters */
 193         POWER_SUPPLY_USB_TYPE_C,                /* Type C Port */
 194         POWER_SUPPLY_USB_TYPE_PD,               /* Power Delivery Port */
 195         POWER_SUPPLY_USB_TYPE_PD_DRP,           /* PD Dual Role Port */
 196         POWER_SUPPLY_USB_TYPE_PD_PPS,           /* PD Programmable Power Supply */
 197         POWER_SUPPLY_USB_TYPE_APPLE_BRICK_ID,   /* Apple Charging Method */
 198 };
 199
 200 enum power_supply_notifier_events {
 201         PSY_EVENT_PROP_CHANGED,
 202 };
 203
 204 union power_supply_propval {
 205         int intval;
 206         const char *strval;
 207 };
 208
 209 struct device_node;
 210 struct power_supply;
 211
 212 /* Run-time specific power supply configuration */
 213 struct power_supply_config {
 214         struct device_node *of_node;
 215         struct fwnode_handle *fwnode;
 216
 217         /* Driver private data */
 218         void *drv_data;
 219
 220         /* Device specific sysfs attributes */
 221         const struct attribute_group **attr_grp;
 222
 223         char **supplied_to;
 224         size_t num_supplicants;
 225 };
 226
 227 /* Description of power supply */
 228 struct power_supply_desc {
 229         const char *name;
 230         enum power_supply_type type;
 231         const enum power_supply_usb_type *usb_types;
 232         size_t num_usb_types;
 233         const enum power_supply_property *properties;
 234         size_t num_properties;
 235
 236         /*
 237          * Functions for drivers implementing power supply class.
 238          * These shouldn't be called directly by other drivers for accessing
 239          * this power supply. Instead use power_supply_*() functions (for
 240          * example power_supply_get_property()).
 241          */
 242         int (*get_property)(struct power_supply *psy,
 243                             enum power_supply_property psp,
 244                             union power_supply_propval *val);
 245         int (*set_property)(struct power_supply *psy,
 246                             enum power_supply_property psp,
 247                             const union power_supply_propval *val);
 248         /*
 249          * property_is_writeable() will be called during registration
 250          * of power supply. If this happens during device probe then it must
 251          * not access internal data of device (because probe did not end).
 252          */
 253         int (*property_is_writeable)(struct power_supply *psy,
 254                                      enum power_supply_property psp);
 255         void (*external_power_changed)(struct power_supply *psy);
 256         void (*set_charged)(struct power_supply *psy);
 257
 258         /*
 259          * Set if thermal zone should not be created for this power supply.
 260          * For example for virtual supplies forwarding calls to actual
 261          * sensors or other supplies.
 262          */
 263         bool no_thermal;
 264         /* For APM emulation, think legacy userspace. */
 265         int use_for_apm;
 266 };
 267
 268 struct power_supply {
 269         const struct power_supply_desc *desc;
 270
 271         char **supplied_to;
 272         size_t num_supplicants;
 273
 274         char **supplied_from;
 275         size_t num_supplies;
 276         struct device_node *of_node;
 277
 278         /* Driver private data */
 279         void *drv_data;
 280
 281         /* private */
 282         struct device dev;
 283         struct work_struct changed_work;
 284         struct delayed_work deferred_register_work;
 285         spinlock_t changed_lock;
 286         bool changed;
 287         bool initialized;
 288         bool removing;
 289         atomic_t use_cnt;
 290 #ifdef CONFIG_THERMAL
 291         struct thermal_zone_device *tzd;
 292         struct thermal_cooling_device *tcd;
 293 #endif
 294
 295 #ifdef CONFIG_LEDS_TRIGGERS
 296         struct led_trigger *charging_full_trig;
 297         char *charging_full_trig_name;
 298         struct led_trigger *charging_trig;
 299         char *charging_trig_name;
 300         struct led_trigger *full_trig;
 301         char *full_trig_name;
 302         struct led_trigger *online_trig;
 303         char *online_trig_name;
 304         struct led_trigger *charging_blink_full_solid_trig;
 305         char *charging_blink_full_solid_trig_name;
 306 #endif
 307 };
 308
 309 /*
 310  * This is recommended structure to specify static power supply parameters.
 311  * Generic one, parametrizable for different power supplies. Power supply
 312  * class itself does not use it, but that's what implementing most platform
 313  * drivers, should try reuse for consistency.
 314  */
 315
 316 struct power_supply_info {
 317         const char *name;
 318         int technology;
 319         int voltage_max_design;
 320         int voltage_min_design;
 321         int charge_full_design;
 322         int charge_empty_design;
 323         int energy_full_design;
 324         int energy_empty_design;
 325         int use_for_apm;
 326 };
 327
 328 struct power_supply_battery_ocv_table {
 329         int ocv;        /* microVolts */
 330         int capacity;   /* percent */
 331 };
 332
 333 struct power_supply_resistance_temp_table {
 334         int temp;       /* celsius */
 335         int resistance; /* internal resistance percent */
 336 };
 337
 338 #define POWER_SUPPLY_OCV_TEMP_MAX 20
 339
 340 /*
 341  * This is the recommended struct to manage static battery parameters,
 342  * populated by power_supply_get_battery_info(). Most platform drivers should
 343  * use these for consistency.
 344  * Its field names must correspond to elements in enum power_supply_property.
 345  * The default field value is -EINVAL.
 346  * Power supply class itself doesn't use this.
 347  */
 348
 349 struct power_supply_battery_info {
 350         int energy_full_design_uwh;         /* microWatt-hours */
 351         int charge_full_design_uah;         /* microAmp-hours */
 352         int voltage_min_design_uv;          /* microVolts */
 353         int voltage_max_design_uv;          /* microVolts */
 354         int tricklecharge_current_ua;       /* microAmps */
 355         int precharge_current_ua;           /* microAmps */
 356         int precharge_voltage_max_uv;       /* microVolts */
 357         int charge_term_current_ua;         /* microAmps */
 358         int charge_restart_voltage_uv;      /* microVolts */
 359         int overvoltage_limit_uv;           /* microVolts */
 360         int constant_charge_current_max_ua; /* microAmps */
 361         int constant_charge_voltage_max_uv; /* microVolts */
 362         int factory_internal_resistance_uohm;   /* microOhms */
 363         int ocv_temp[POWER_SUPPLY_OCV_TEMP_MAX];/* celsius */
 364         struct power_supply_battery_ocv_table *ocv_table[POWER_SUPPLY_OCV_TEMP_MAX];
 365         int ocv_table_size[POWER_SUPPLY_OCV_TEMP_MAX];
 366         struct power_supply_resistance_temp_table *resist_table;
 367         int resist_table_size;
 368 };
 369
 370 extern struct atomic_notifier_head power_supply_notifier;
 371 extern int power_supply_reg_notifier(struct notifier_block *nb);
 372 extern void power_supply_unreg_notifier(struct notifier_block *nb);
 373 extern struct power_supply *power_supply_get_by_name(const char *name);
 374 extern void power_supply_put(struct power_supply *psy);
 375 #ifdef CONFIG_OF
 376 extern struct power_supply *power_supply_get_by_phandle(struct device_node *np,
 377                                                         const char *property);
 378 extern struct power_supply *devm_power_supply_get_by_phandle(
 379                                     struct device *dev, const char *property);
 380 #else /* !CONFIG_OF */
 381 static inline struct power_supply *
 382 power_supply_get_by_phandle(struct device_node *np, const char *property)
 383 { return NULL; }
 384 static inline struct power_supply *
 385 devm_power_supply_get_by_phandle(struct device *dev, const char *property)
 386 { return NULL; }
 387 #endif /* CONFIG_OF */
 388
 389 extern int power_supply_get_battery_info(struct power_supply *psy,
 390                                          struct power_supply_battery_info *info);
 391 extern void power_supply_put_battery_info(struct power_supply *psy,
 392                                           struct power_supply_battery_info *info);
 393 extern int power_supply_ocv2cap_simple(struct power_supply_battery_ocv_table *table,
 394                                        int table_len, int ocv);
 395 extern struct power_supply_battery_ocv_table *
 396 power_supply_find_ocv2cap_table(struct power_supply_battery_info *info,
 397                                 int temp, int *table_len);
 398 extern int power_supply_batinfo_ocv2cap(struct power_supply_battery_info *info,
 399                                         int ocv, int temp);
 400 extern int
 401 power_supply_temp2resist_simple(struct power_supply_resistance_temp_table *table,
 402                                 int table_len, int temp);
 403 extern void power_supply_changed(struct power_supply *psy);
 404 extern int power_supply_am_i_supplied(struct power_supply *psy);
 405 extern int power_supply_set_input_current_limit_from_supplier(
 406                                          struct power_supply *psy);
 407 extern int power_supply_set_battery_charged(struct power_supply *psy);
 408
 409 #ifdef CONFIG_POWER_SUPPLY
 410 extern int power_supply_is_system_supplied(void);
 411 #else
 412 static inline int power_supply_is_system_supplied(void) { return -ENOSYS; }
 413 #endif
 414
 415 extern int power_supply_get_property(struct power_supply *psy,
 416                             enum power_supply_property psp,
 417                             union power_supply_propval *val);
 418 extern int power_supply_set_property(struct power_supply *psy,
 419                             enum power_supply_property psp,
 420                             const union power_supply_propval *val);
 421 extern int power_supply_property_is_writeable(struct power_supply *psy,
 422                                         enum power_supply_property psp);
 423 extern void power_supply_external_power_changed(struct power_supply *psy);
 424
 425 extern struct power_supply *__must_check
 426 power_supply_register(struct device *parent,
 427                                  const struct power_supply_desc *desc,
 428                                  const struct power_supply_config *cfg);
 429 extern struct power_supply *__must_check
 430 power_supply_register_no_ws(struct device *parent,
 431                                  const struct power_supply_desc *desc,
 432                                  const struct power_supply_config *cfg);
 433 extern struct power_supply *__must_check
 434 devm_power_supply_register(struct device *parent,
 435                                  const struct power_supply_desc *desc,
 436                                  const struct power_supply_config *cfg);
 437 extern struct power_supply *__must_check
 438 devm_power_supply_register_no_ws(struct device *parent,
 439                                  const struct power_supply_desc *desc,
 440                                  const struct power_supply_config *cfg);
 441 extern void power_supply_unregister(struct power_supply *psy);
 442 extern int power_supply_powers(struct power_supply *psy, struct device *dev);
 443
 444 #define to_power_supply(device) container_of(device, struct power_supply, dev)
 445
 446 extern void *power_supply_get_drvdata(struct power_supply *psy);
 447 /* For APM emulation, think legacy userspace. */
 448 extern struct class *power_supply_class;
 449
 450 static inline bool power_supply_is_amp_property(enum power_supply_property psp)
 451 {
 452         switch (psp) {
 453         case POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN:
 454         case POWER_SUPPLY_PROP_CHARGE_EMPTY_DESIGN:
 455         case POWER_SUPPLY_PROP_CHARGE_FULL:
 456         case POWER_SUPPLY_PROP_CHARGE_EMPTY:
 457         case POWER_SUPPLY_PROP_CHARGE_NOW:
 458         case POWER_SUPPLY_PROP_CHARGE_AVG:
 459         case POWER_SUPPLY_PROP_CHARGE_COUNTER:
 460         case POWER_SUPPLY_PROP_PRECHARGE_CURRENT:
 461         case POWER_SUPPLY_PROP_CHARGE_TERM_CURRENT:
 462         case POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT:
 463         case POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT_MAX:
 464         case POWER_SUPPLY_PROP_CURRENT_MAX:
 465         case POWER_SUPPLY_PROP_CURRENT_NOW:
 466         case POWER_SUPPLY_PROP_CURRENT_AVG:
 467         case POWER_SUPPLY_PROP_CURRENT_BOOT:
 468                 return 1;
 469         default:
 470                 break;
 471         }
 472
 473         return 0;
 474 }
 475
 476 static inline bool power_supply_is_watt_property(enum power_supply_property psp)
 477 {
 478         switch (psp) {
 479         case POWER_SUPPLY_PROP_ENERGY_FULL_DESIGN:
 480         case POWER_SUPPLY_PROP_ENERGY_EMPTY_DESIGN:
 481         case POWER_SUPPLY_PROP_ENERGY_FULL:
 482         case POWER_SUPPLY_PROP_ENERGY_EMPTY:
 483         case POWER_SUPPLY_PROP_ENERGY_NOW:
 484         case POWER_SUPPLY_PROP_ENERGY_AVG:
 485         case POWER_SUPPLY_PROP_VOLTAGE_MAX:
 486         case POWER_SUPPLY_PROP_VOLTAGE_MIN:
 487         case POWER_SUPPLY_PROP_VOLTAGE_MAX_DESIGN:
 488         case POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN:
 489         case POWER_SUPPLY_PROP_VOLTAGE_NOW:
 490         case POWER_SUPPLY_PROP_VOLTAGE_AVG:
 491         case POWER_SUPPLY_PROP_VOLTAGE_OCV:
 492         case POWER_SUPPLY_PROP_VOLTAGE_BOOT:
 493         case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE:
 494         case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE_MAX:
 495         case POWER_SUPPLY_PROP_POWER_NOW:
 496                 return 1;
 497         default:
 498                 break;
 499         }
 500
 501         return 0;
 502 }
 503
 504 #ifdef CONFIG_POWER_SUPPLY_HWMON
 505 int power_supply_add_hwmon_sysfs(struct power_supply *psy);
 506 void power_supply_remove_hwmon_sysfs(struct power_supply *psy);
 507 #else
 508 static inline int power_supply_add_hwmon_sysfs(struct power_supply *psy)
 509 {
 510         return 0;
 511 }
 512
 513 static inline
 514 void power_supply_remove_hwmon_sysfs(struct power_supply *psy) {}
 515 #endif
 516
 517 #endif /* __LINUX_POWER_SUPPLY_H__ */