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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 	POWER_SUPPLY_HEALTH_WARM,
66 	POWER_SUPPLY_HEALTH_COOL,
67 	POWER_SUPPLY_HEALTH_HOT,
68 };
69 
70 enum {
71 	POWER_SUPPLY_TECHNOLOGY_UNKNOWN = 0,
72 	POWER_SUPPLY_TECHNOLOGY_NiMH,
73 	POWER_SUPPLY_TECHNOLOGY_LION,
74 	POWER_SUPPLY_TECHNOLOGY_LIPO,
75 	POWER_SUPPLY_TECHNOLOGY_LiFe,
76 	POWER_SUPPLY_TECHNOLOGY_NiCd,
77 	POWER_SUPPLY_TECHNOLOGY_LiMn,
78 };
79 
80 enum {
81 	POWER_SUPPLY_CAPACITY_LEVEL_UNKNOWN = 0,
82 	POWER_SUPPLY_CAPACITY_LEVEL_CRITICAL,
83 	POWER_SUPPLY_CAPACITY_LEVEL_LOW,
84 	POWER_SUPPLY_CAPACITY_LEVEL_NORMAL,
85 	POWER_SUPPLY_CAPACITY_LEVEL_HIGH,
86 	POWER_SUPPLY_CAPACITY_LEVEL_FULL,
87 };
88 
89 enum {
90 	POWER_SUPPLY_SCOPE_UNKNOWN = 0,
91 	POWER_SUPPLY_SCOPE_SYSTEM,
92 	POWER_SUPPLY_SCOPE_DEVICE,
93 };
94 
95 enum power_supply_property {
96 	/* Properties of type `int' */
97 	POWER_SUPPLY_PROP_STATUS = 0,
98 	POWER_SUPPLY_PROP_CHARGE_TYPE,
99 	POWER_SUPPLY_PROP_HEALTH,
100 	POWER_SUPPLY_PROP_PRESENT,
101 	POWER_SUPPLY_PROP_ONLINE,
102 	POWER_SUPPLY_PROP_AUTHENTIC,
103 	POWER_SUPPLY_PROP_TECHNOLOGY,
104 	POWER_SUPPLY_PROP_CYCLE_COUNT,
105 	POWER_SUPPLY_PROP_VOLTAGE_MAX,
106 	POWER_SUPPLY_PROP_VOLTAGE_MIN,
107 	POWER_SUPPLY_PROP_VOLTAGE_MAX_DESIGN,
108 	POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN,
109 	POWER_SUPPLY_PROP_VOLTAGE_NOW,
110 	POWER_SUPPLY_PROP_VOLTAGE_AVG,
111 	POWER_SUPPLY_PROP_VOLTAGE_OCV,
112 	POWER_SUPPLY_PROP_VOLTAGE_BOOT,
113 	POWER_SUPPLY_PROP_CURRENT_MAX,
114 	POWER_SUPPLY_PROP_CURRENT_NOW,
115 	POWER_SUPPLY_PROP_CURRENT_AVG,
116 	POWER_SUPPLY_PROP_CURRENT_BOOT,
117 	POWER_SUPPLY_PROP_POWER_NOW,
118 	POWER_SUPPLY_PROP_POWER_AVG,
119 	POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN,
120 	POWER_SUPPLY_PROP_CHARGE_EMPTY_DESIGN,
121 	POWER_SUPPLY_PROP_CHARGE_FULL,
122 	POWER_SUPPLY_PROP_CHARGE_EMPTY,
123 	POWER_SUPPLY_PROP_CHARGE_NOW,
124 	POWER_SUPPLY_PROP_CHARGE_AVG,
125 	POWER_SUPPLY_PROP_CHARGE_COUNTER,
126 	POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT,
127 	POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT_MAX,
128 	POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE,
129 	POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE_MAX,
130 	POWER_SUPPLY_PROP_CHARGE_CONTROL_LIMIT,
131 	POWER_SUPPLY_PROP_CHARGE_CONTROL_LIMIT_MAX,
132 	POWER_SUPPLY_PROP_CHARGE_CONTROL_START_THRESHOLD, /* in percents! */
133 	POWER_SUPPLY_PROP_CHARGE_CONTROL_END_THRESHOLD, /* in percents! */
134 	POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT,
135 	POWER_SUPPLY_PROP_INPUT_VOLTAGE_LIMIT,
136 	POWER_SUPPLY_PROP_INPUT_POWER_LIMIT,
137 	POWER_SUPPLY_PROP_ENERGY_FULL_DESIGN,
138 	POWER_SUPPLY_PROP_ENERGY_EMPTY_DESIGN,
139 	POWER_SUPPLY_PROP_ENERGY_FULL,
140 	POWER_SUPPLY_PROP_ENERGY_EMPTY,
141 	POWER_SUPPLY_PROP_ENERGY_NOW,
142 	POWER_SUPPLY_PROP_ENERGY_AVG,
143 	POWER_SUPPLY_PROP_CAPACITY, /* in percents! */
144 	POWER_SUPPLY_PROP_CAPACITY_ALERT_MIN, /* in percents! */
145 	POWER_SUPPLY_PROP_CAPACITY_ALERT_MAX, /* in percents! */
146 	POWER_SUPPLY_PROP_CAPACITY_ERROR_MARGIN, /* in percents! */
147 	POWER_SUPPLY_PROP_CAPACITY_LEVEL,
148 	POWER_SUPPLY_PROP_TEMP,
149 	POWER_SUPPLY_PROP_TEMP_MAX,
150 	POWER_SUPPLY_PROP_TEMP_MIN,
151 	POWER_SUPPLY_PROP_TEMP_ALERT_MIN,
152 	POWER_SUPPLY_PROP_TEMP_ALERT_MAX,
153 	POWER_SUPPLY_PROP_TEMP_AMBIENT,
154 	POWER_SUPPLY_PROP_TEMP_AMBIENT_ALERT_MIN,
155 	POWER_SUPPLY_PROP_TEMP_AMBIENT_ALERT_MAX,
156 	POWER_SUPPLY_PROP_TIME_TO_EMPTY_NOW,
157 	POWER_SUPPLY_PROP_TIME_TO_EMPTY_AVG,
158 	POWER_SUPPLY_PROP_TIME_TO_FULL_NOW,
159 	POWER_SUPPLY_PROP_TIME_TO_FULL_AVG,
160 	POWER_SUPPLY_PROP_TYPE, /* use power_supply.type instead */
161 	POWER_SUPPLY_PROP_USB_TYPE,
162 	POWER_SUPPLY_PROP_SCOPE,
163 	POWER_SUPPLY_PROP_PRECHARGE_CURRENT,
164 	POWER_SUPPLY_PROP_CHARGE_TERM_CURRENT,
165 	POWER_SUPPLY_PROP_CALIBRATE,
166 	POWER_SUPPLY_PROP_MANUFACTURE_YEAR,
167 	POWER_SUPPLY_PROP_MANUFACTURE_MONTH,
168 	POWER_SUPPLY_PROP_MANUFACTURE_DAY,
169 	/* Properties of type `const char *' */
170 	POWER_SUPPLY_PROP_MODEL_NAME,
171 	POWER_SUPPLY_PROP_MANUFACTURER,
172 	POWER_SUPPLY_PROP_SERIAL_NUMBER,
173 	POWER_SUPPLY_PROP_QUICK_CHARGE_TYPE,
174 	POWER_SUPPLY_PROP_TX_ADAPTER,
175 	POWER_SUPPLY_PROP_SIGNAL_STRENGTH,
176 	POWER_SUPPLY_PROP_REVERSE_CHG_MODE,
177 };
178 
179 enum power_supply_type {
180 	POWER_SUPPLY_TYPE_UNKNOWN = 0,
181 	POWER_SUPPLY_TYPE_BATTERY,
182 	POWER_SUPPLY_TYPE_UPS,
183 	POWER_SUPPLY_TYPE_MAINS,
184 	POWER_SUPPLY_TYPE_USB,			/* Standard Downstream Port */
185 	POWER_SUPPLY_TYPE_USB_DCP,		/* Dedicated Charging Port */
186 	POWER_SUPPLY_TYPE_USB_CDP,		/* Charging Downstream Port */
187 	POWER_SUPPLY_TYPE_USB_ACA,		/* Accessory Charger Adapters */
188 	POWER_SUPPLY_TYPE_USB_TYPE_C,		/* Type C Port */
189 	POWER_SUPPLY_TYPE_USB_PD,		/* Power Delivery Port */
190 	POWER_SUPPLY_TYPE_USB_PD_DRP,		/* PD Dual Role Port */
191 	POWER_SUPPLY_TYPE_APPLE_BRICK_ID,	/* Apple Charging Method */
192 	POWER_SUPPLY_TYPE_WIRELESS,		/* Wireless */
193 	POWER_SUPPLY_TYPE_USB_HVDCP,		/* High Voltage DCP */
194 	POWER_SUPPLY_TYPE_USB_HVDCP_3,		/* Efficient High Voltage DCP */
195 	POWER_SUPPLY_TYPE_USB_HVDCP_3P5,	/* Efficient High Voltage DCP */
196 	POWER_SUPPLY_TYPE_USB_FLOAT,		/* Floating charger */
197 };
198 
199 enum power_supply_usb_type {
200 	POWER_SUPPLY_USB_TYPE_UNKNOWN = 0,
201 	POWER_SUPPLY_USB_TYPE_SDP,		/* Standard Downstream Port */
202 	POWER_SUPPLY_USB_TYPE_DCP,		/* Dedicated Charging Port */
203 	POWER_SUPPLY_USB_TYPE_CDP,		/* Charging Downstream Port */
204 	POWER_SUPPLY_USB_TYPE_ACA,		/* Accessory Charger Adapters */
205 	POWER_SUPPLY_USB_TYPE_C,		/* Type C Port */
206 	POWER_SUPPLY_USB_TYPE_PD,		/* Power Delivery Port */
207 	POWER_SUPPLY_USB_TYPE_PD_DRP,		/* PD Dual Role Port */
208 	POWER_SUPPLY_USB_TYPE_PD_PPS,		/* PD Programmable Power Supply */
209 	POWER_SUPPLY_USB_TYPE_APPLE_BRICK_ID,	/* Apple Charging Method */
210 };
211 
212 enum power_supply_quick_charge_type {
213 	QUICK_CHARGE_NORMAL = 0,		/* Charging Power <= 10W */
214 	QUICK_CHARGE_FAST,			/* 10W < Charging Power <= 20W */
215 	QUICK_CHARGE_FLASH,			/* 20W < Charging Power <= 30W */
216 	QUICK_CHARGE_TURBE,			/* 30W < Charging Power <= 50W */
217 	QUICK_CHARGE_SUPER,			/* Charging Power > 50W */
218 	QUICK_CHARGE_MAX,
219 };
220 
221 enum power_supply_tx_adapter_type {
222 	ADAPTER_NONE = 0,			/* Nothing Attached */
223 	ADAPTER_SDP,				/* Standard Downstream Port */
224 	ADAPTER_CDP,				/* Charging Downstream Port */
225 	ADAPTER_DCP,				/* Dedicated Charging Port */
226 	ADAPTER_OCP,				/* Other Charging Port */
227 	ADAPTER_QC2,				/* Qualcomm Charge 2.0 */
228 	ADAPTER_QC3,				/* Qualcomm Charge 3.0 */
229 	ADAPTER_PD,				/* Power Delivery Port */
230 	ADAPTER_AUTH_FAILED,			/* Authenticated Failed Adapter */
231 	ADAPTER_PRIVATE_QC3,			/* Qualcomm Charge 3.0 with Private Protocol */
232 	ADAPTER_PRIVATE_PD,			/* PD Adapter with Private Protocol */
233 	ADAPTER_CAR_POWER,			/* Wireless Car Charger */
234 	ADAPTER_PRIVATE_PD_40W,			/* 40W PD Adapter with Private Protocol */
235 	ADAPTER_VOICE_BOX,			/* Voice Box which Support Wireless Charger */
236 	ADAPTER_PRIVATE_PD_50W,			/* 50W PD Adapter with Private Protocol */
237 };
238 
239 enum power_supply_notifier_events {
240 	PSY_EVENT_PROP_CHANGED,
241 };
242 
243 union power_supply_propval {
244 	int intval;
245 	const char *strval;
246 };
247 
248 struct device_node;
249 struct power_supply;
250 
251 /* Run-time specific power supply configuration */
252 struct power_supply_config {
253 	struct device_node *of_node;
254 	struct fwnode_handle *fwnode;
255 
256 	/* Driver private data */
257 	void *drv_data;
258 
259 	/* Device specific sysfs attributes */
260 	const struct attribute_group **attr_grp;
261 
262 	char **supplied_to;
263 	size_t num_supplicants;
264 };
265 
266 /* Description of power supply */
267 struct power_supply_desc {
268 	const char *name;
269 	enum power_supply_type type;
270 	enum power_supply_usb_type *usb_types;
271 	size_t num_usb_types;
272 	enum power_supply_property *properties;
273 	size_t num_properties;
274 
275 	/*
276 	 * Functions for drivers implementing power supply class.
277 	 * These shouldn't be called directly by other drivers for accessing
278 	 * this power supply. Instead use power_supply_*() functions (for
279 	 * example power_supply_get_property()).
280 	 */
281 	int (*get_property)(struct power_supply *psy,
282 			    enum power_supply_property psp,
283 			    union power_supply_propval *val);
284 	int (*set_property)(struct power_supply *psy,
285 			    enum power_supply_property psp,
286 			    const union power_supply_propval *val);
287 	/*
288 	 * property_is_writeable() will be called during registration
289 	 * of power supply. If this happens during device probe then it must
290 	 * not access internal data of device (because probe did not end).
291 	 */
292 	int (*property_is_writeable)(struct power_supply *psy,
293 				     enum power_supply_property psp);
294 	void (*external_power_changed)(struct power_supply *psy);
295 	void (*set_charged)(struct power_supply *psy);
296 
297 	/*
298 	 * Set if thermal zone should not be created for this power supply.
299 	 * For example for virtual supplies forwarding calls to actual
300 	 * sensors or other supplies.
301 	 */
302 	bool no_thermal;
303 	/* For APM emulation, think legacy userspace. */
304 	int use_for_apm;
305 };
306 
307 struct power_supply {
308 	const struct power_supply_desc *desc;
309 
310 	char **supplied_to;
311 	size_t num_supplicants;
312 
313 	char **supplied_from;
314 	size_t num_supplies;
315 	struct device_node *of_node;
316 
317 	/* Driver private data */
318 	void *drv_data;
319 
320 	/* private */
321 	struct device dev;
322 	struct work_struct changed_work;
323 	struct delayed_work deferred_register_work;
324 	spinlock_t changed_lock;
325 	bool changed;
326 	bool initialized;
327 	bool removing;
328 	atomic_t use_cnt;
329 #ifdef CONFIG_THERMAL
330 	struct thermal_zone_device *tzd;
331 	struct thermal_cooling_device *tcd;
332 #endif
333 
334 #ifdef CONFIG_LEDS_TRIGGERS
335 	struct led_trigger *charging_full_trig;
336 	char *charging_full_trig_name;
337 	struct led_trigger *charging_trig;
338 	char *charging_trig_name;
339 	struct led_trigger *full_trig;
340 	char *full_trig_name;
341 	struct led_trigger *online_trig;
342 	char *online_trig_name;
343 	struct led_trigger *charging_blink_full_solid_trig;
344 	char *charging_blink_full_solid_trig_name;
345 #endif
346 };
347 
348 /*
349  * This is recommended structure to specify static power supply parameters.
350  * Generic one, parametrizable for different power supplies. Power supply
351  * class itself does not use it, but that's what implementing most platform
352  * drivers, should try reuse for consistency.
353  */
354 
355 struct power_supply_info {
356 	const char *name;
357 	int technology;
358 	int voltage_max_design;
359 	int voltage_min_design;
360 	int charge_full_design;
361 	int charge_empty_design;
362 	int energy_full_design;
363 	int energy_empty_design;
364 	int use_for_apm;
365 };
366 
367 struct power_supply_battery_ocv_table {
368 	int ocv;	/* microVolts */
369 	int capacity;	/* percent */
370 };
371 
372 struct power_supply_resistance_temp_table {
373 	int temp;	/* celsius */
374 	int resistance;	/* internal resistance percent */
375 };
376 
377 #define POWER_SUPPLY_OCV_TEMP_MAX 20
378 
379 /*
380  * This is the recommended struct to manage static battery parameters,
381  * populated by power_supply_get_battery_info(). Most platform drivers should
382  * use these for consistency.
383  * Its field names must correspond to elements in enum power_supply_property.
384  * The default field value is -EINVAL.
385  * Power supply class itself doesn't use this.
386  */
387 
388 struct power_supply_battery_info {
389 	int energy_full_design_uwh;	    /* microWatt-hours */
390 	int charge_full_design_uah;	    /* microAmp-hours */
391 	int voltage_min_design_uv;	    /* microVolts */
392 	int voltage_max_design_uv;	    /* microVolts */
393 	int precharge_current_ua;	    /* microAmps */
394 	int charge_term_current_ua;	    /* microAmps */
395 	int constant_charge_current_max_ua; /* microAmps */
396 	int constant_charge_voltage_max_uv; /* microVolts */
397 	int factory_internal_resistance_uohm;   /* microOhms */
398 	int ocv_temp[POWER_SUPPLY_OCV_TEMP_MAX];/* celsius */
399 	struct power_supply_battery_ocv_table *ocv_table[POWER_SUPPLY_OCV_TEMP_MAX];
400 	int ocv_table_size[POWER_SUPPLY_OCV_TEMP_MAX];
401 	struct power_supply_resistance_temp_table *resist_table;
402 	int resist_table_size;
403 };
404 
405 extern struct atomic_notifier_head power_supply_notifier;
406 extern int power_supply_reg_notifier(struct notifier_block *nb);
407 extern void power_supply_unreg_notifier(struct notifier_block *nb);
408 extern struct power_supply *power_supply_get_by_name(const char *name);
409 extern void power_supply_put(struct power_supply *psy);
410 #ifdef CONFIG_OF
411 extern struct power_supply *power_supply_get_by_phandle(struct device_node *np,
412 							const char *property);
413 extern struct power_supply *devm_power_supply_get_by_phandle(
414 				    struct device *dev, const char *property);
415 #else /* !CONFIG_OF */
416 static inline struct power_supply *
power_supply_get_by_phandle(struct device_node * np,const char * property)417 power_supply_get_by_phandle(struct device_node *np, const char *property)
418 { return NULL; }
419 static inline struct power_supply *
devm_power_supply_get_by_phandle(struct device * dev,const char * property)420 devm_power_supply_get_by_phandle(struct device *dev, const char *property)
421 { return NULL; }
422 #endif /* CONFIG_OF */
423 
424 extern int power_supply_get_battery_info(struct power_supply *psy,
425 					 struct power_supply_battery_info *info);
426 extern void power_supply_put_battery_info(struct power_supply *psy,
427 					  struct power_supply_battery_info *info);
428 extern int power_supply_ocv2cap_simple(struct power_supply_battery_ocv_table *table,
429 				       int table_len, int ocv);
430 extern struct power_supply_battery_ocv_table *
431 power_supply_find_ocv2cap_table(struct power_supply_battery_info *info,
432 				int temp, int *table_len);
433 extern int power_supply_batinfo_ocv2cap(struct power_supply_battery_info *info,
434 					int ocv, int temp);
435 extern int
436 power_supply_temp2resist_simple(struct power_supply_resistance_temp_table *table,
437 				int table_len, int temp);
438 extern void power_supply_changed(struct power_supply *psy);
439 extern int power_supply_am_i_supplied(struct power_supply *psy);
440 int power_supply_get_property_from_supplier(struct power_supply *psy,
441 					    enum power_supply_property psp,
442 					    union power_supply_propval *val);
443 extern int power_supply_set_battery_charged(struct power_supply *psy);
444 
445 #ifdef CONFIG_POWER_SUPPLY
446 extern int power_supply_is_system_supplied(void);
447 #else
power_supply_is_system_supplied(void)448 static inline int power_supply_is_system_supplied(void) { return -ENOSYS; }
449 #endif
450 
451 extern int power_supply_get_property(struct power_supply *psy,
452 			    enum power_supply_property psp,
453 			    union power_supply_propval *val);
454 extern int power_supply_set_property(struct power_supply *psy,
455 			    enum power_supply_property psp,
456 			    const union power_supply_propval *val);
457 extern int power_supply_property_is_writeable(struct power_supply *psy,
458 					enum power_supply_property psp);
459 extern void power_supply_external_power_changed(struct power_supply *psy);
460 
461 extern struct power_supply *__must_check
462 power_supply_register(struct device *parent,
463 				 const struct power_supply_desc *desc,
464 				 const struct power_supply_config *cfg);
465 extern struct power_supply *__must_check
466 power_supply_register_no_ws(struct device *parent,
467 				 const struct power_supply_desc *desc,
468 				 const struct power_supply_config *cfg);
469 extern struct power_supply *__must_check
470 devm_power_supply_register(struct device *parent,
471 				 const struct power_supply_desc *desc,
472 				 const struct power_supply_config *cfg);
473 extern struct power_supply *__must_check
474 devm_power_supply_register_no_ws(struct device *parent,
475 				 const struct power_supply_desc *desc,
476 				 const struct power_supply_config *cfg);
477 extern void power_supply_unregister(struct power_supply *psy);
478 extern int power_supply_powers(struct power_supply *psy, struct device *dev);
479 
480 #define to_power_supply(device) container_of(device, struct power_supply, dev)
481 
482 extern void *power_supply_get_drvdata(struct power_supply *psy);
483 /* For APM emulation, think legacy userspace. */
484 extern struct class *power_supply_class;
485 
power_supply_is_amp_property(enum power_supply_property psp)486 static inline bool power_supply_is_amp_property(enum power_supply_property psp)
487 {
488 	switch (psp) {
489 	case POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN:
490 	case POWER_SUPPLY_PROP_CHARGE_EMPTY_DESIGN:
491 	case POWER_SUPPLY_PROP_CHARGE_FULL:
492 	case POWER_SUPPLY_PROP_CHARGE_EMPTY:
493 	case POWER_SUPPLY_PROP_CHARGE_NOW:
494 	case POWER_SUPPLY_PROP_CHARGE_AVG:
495 	case POWER_SUPPLY_PROP_CHARGE_COUNTER:
496 	case POWER_SUPPLY_PROP_PRECHARGE_CURRENT:
497 	case POWER_SUPPLY_PROP_CHARGE_TERM_CURRENT:
498 	case POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT:
499 	case POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT_MAX:
500 	case POWER_SUPPLY_PROP_CURRENT_MAX:
501 	case POWER_SUPPLY_PROP_CURRENT_NOW:
502 	case POWER_SUPPLY_PROP_CURRENT_AVG:
503 	case POWER_SUPPLY_PROP_CURRENT_BOOT:
504 		return 1;
505 	default:
506 		break;
507 	}
508 
509 	return 0;
510 }
511 
power_supply_is_watt_property(enum power_supply_property psp)512 static inline bool power_supply_is_watt_property(enum power_supply_property psp)
513 {
514 	switch (psp) {
515 	case POWER_SUPPLY_PROP_ENERGY_FULL_DESIGN:
516 	case POWER_SUPPLY_PROP_ENERGY_EMPTY_DESIGN:
517 	case POWER_SUPPLY_PROP_ENERGY_FULL:
518 	case POWER_SUPPLY_PROP_ENERGY_EMPTY:
519 	case POWER_SUPPLY_PROP_ENERGY_NOW:
520 	case POWER_SUPPLY_PROP_ENERGY_AVG:
521 	case POWER_SUPPLY_PROP_VOLTAGE_MAX:
522 	case POWER_SUPPLY_PROP_VOLTAGE_MIN:
523 	case POWER_SUPPLY_PROP_VOLTAGE_MAX_DESIGN:
524 	case POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN:
525 	case POWER_SUPPLY_PROP_VOLTAGE_NOW:
526 	case POWER_SUPPLY_PROP_VOLTAGE_AVG:
527 	case POWER_SUPPLY_PROP_VOLTAGE_OCV:
528 	case POWER_SUPPLY_PROP_VOLTAGE_BOOT:
529 	case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE:
530 	case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE_MAX:
531 	case POWER_SUPPLY_PROP_POWER_NOW:
532 		return 1;
533 	default:
534 		break;
535 	}
536 
537 	return 0;
538 }
539 
540 #ifdef CONFIG_POWER_SUPPLY_HWMON
541 int power_supply_add_hwmon_sysfs(struct power_supply *psy);
542 void power_supply_remove_hwmon_sysfs(struct power_supply *psy);
543 #else
power_supply_add_hwmon_sysfs(struct power_supply * psy)544 static inline int power_supply_add_hwmon_sysfs(struct power_supply *psy)
545 {
546 	return 0;
547 }
548 
549 static inline
power_supply_remove_hwmon_sysfs(struct power_supply * psy)550 void power_supply_remove_hwmon_sysfs(struct power_supply *psy) {}
551 #endif
552 
553 #endif /* __LINUX_POWER_SUPPLY_H__ */
554