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__ */ 518