1 /* SPDX-License-Identifier: GPL-2.0-only */
2 /*
3 * consumer.h -- SoC Regulator consumer support.
4 *
5 * Copyright (C) 2007, 2008 Wolfson Microelectronics PLC.
6 *
7 * Author: Liam Girdwood <lrg@slimlogic.co.uk>
8 *
9 * Regulator Consumer Interface.
10 *
11 * A Power Management Regulator framework for SoC based devices.
12 * Features:-
13 * o Voltage and current level control.
14 * o Operating mode control.
15 * o Regulator status.
16 * o sysfs entries for showing client devices and status
17 *
18 * EXPERIMENTAL FEATURES:
19 * Dynamic Regulator operating Mode Switching (DRMS) - allows regulators
20 * to use most efficient operating mode depending upon voltage and load and
21 * is transparent to client drivers.
22 *
23 * e.g. Devices x,y,z share regulator r. Device x and y draw 20mA each during
24 * IO and 1mA at idle. Device z draws 100mA when under load and 5mA when
25 * idling. Regulator r has > 90% efficiency in NORMAL mode at loads > 100mA
26 * but this drops rapidly to 60% when below 100mA. Regulator r has > 90%
27 * efficiency in IDLE mode at loads < 10mA. Thus regulator r will operate
28 * in normal mode for loads > 10mA and in IDLE mode for load <= 10mA.
29 */
30
31 #ifndef __LINUX_REGULATOR_CONSUMER_H_
32 #define __LINUX_REGULATOR_CONSUMER_H_
33
34 #include <linux/err.h>
35 #include <linux/suspend.h>
36
37 struct device;
38 struct notifier_block;
39 struct regmap;
40 struct regulator_dev;
41
42 /*
43 * Regulator operating modes.
44 *
45 * Regulators can run in a variety of different operating modes depending on
46 * output load. This allows further system power savings by selecting the
47 * best (and most efficient) regulator mode for a desired load.
48 *
49 * Most drivers will only care about NORMAL. The modes below are generic and
50 * will probably not match the naming convention of your regulator data sheet
51 * but should match the use cases in the datasheet.
52 *
53 * In order of power efficiency (least efficient at top).
54 *
55 * Mode Description
56 * FAST Regulator can handle fast changes in it's load.
57 * e.g. useful in CPU voltage & frequency scaling where
58 * load can quickly increase with CPU frequency increases.
59 *
60 * NORMAL Normal regulator power supply mode. Most drivers will
61 * use this mode.
62 *
63 * IDLE Regulator runs in a more efficient mode for light
64 * loads. Can be used for devices that have a low power
65 * requirement during periods of inactivity. This mode
66 * may be more noisy than NORMAL and may not be able
67 * to handle fast load switching.
68 *
69 * STANDBY Regulator runs in the most efficient mode for very
70 * light loads. Can be used by devices when they are
71 * in a sleep/standby state. This mode is likely to be
72 * the most noisy and may not be able to handle fast load
73 * switching.
74 *
75 * NOTE: Most regulators will only support a subset of these modes. Some
76 * will only just support NORMAL.
77 *
78 * These modes can be OR'ed together to make up a mask of valid register modes.
79 */
80
81 #define REGULATOR_MODE_INVALID 0x0
82 #define REGULATOR_MODE_FAST 0x1
83 #define REGULATOR_MODE_NORMAL 0x2
84 #define REGULATOR_MODE_IDLE 0x4
85 #define REGULATOR_MODE_STANDBY 0x8
86
87 /*
88 * Regulator notifier events.
89 *
90 * UNDER_VOLTAGE Regulator output is under voltage.
91 * OVER_CURRENT Regulator output current is too high.
92 * REGULATION_OUT Regulator output is out of regulation.
93 * FAIL Regulator output has failed.
94 * OVER_TEMP Regulator over temp.
95 * FORCE_DISABLE Regulator forcibly shut down by software.
96 * VOLTAGE_CHANGE Regulator voltage changed.
97 * Data passed is old voltage cast to (void *).
98 * DISABLE Regulator was disabled.
99 * PRE_VOLTAGE_CHANGE Regulator is about to have voltage changed.
100 * Data passed is "struct pre_voltage_change_data"
101 * ABORT_VOLTAGE_CHANGE Regulator voltage change failed for some reason.
102 * Data passed is old voltage cast to (void *).
103 * PRE_DISABLE Regulator is about to be disabled
104 * ABORT_DISABLE Regulator disable failed for some reason
105 *
106 * NOTE: These events can be OR'ed together when passed into handler.
107 */
108
109 #define REGULATOR_EVENT_UNDER_VOLTAGE 0x01
110 #define REGULATOR_EVENT_OVER_CURRENT 0x02
111 #define REGULATOR_EVENT_REGULATION_OUT 0x04
112 #define REGULATOR_EVENT_FAIL 0x08
113 #define REGULATOR_EVENT_OVER_TEMP 0x10
114 #define REGULATOR_EVENT_FORCE_DISABLE 0x20
115 #define REGULATOR_EVENT_VOLTAGE_CHANGE 0x40
116 #define REGULATOR_EVENT_DISABLE 0x80
117 #define REGULATOR_EVENT_PRE_VOLTAGE_CHANGE 0x100
118 #define REGULATOR_EVENT_ABORT_VOLTAGE_CHANGE 0x200
119 #define REGULATOR_EVENT_PRE_DISABLE 0x400
120 #define REGULATOR_EVENT_ABORT_DISABLE 0x800
121 #define REGULATOR_EVENT_ENABLE 0x1000
122 /*
123 * Following notifications should be emitted only if detected condition
124 * is such that the HW is likely to still be working but consumers should
125 * take a recovery action to prevent problems esacalating into errors.
126 */
127 #define REGULATOR_EVENT_UNDER_VOLTAGE_WARN 0x2000
128 #define REGULATOR_EVENT_OVER_CURRENT_WARN 0x4000
129 #define REGULATOR_EVENT_OVER_VOLTAGE_WARN 0x8000
130 #define REGULATOR_EVENT_OVER_TEMP_WARN 0x10000
131 #define REGULATOR_EVENT_WARN_MASK 0x1E000
132
133 /*
134 * Regulator errors that can be queried using regulator_get_error_flags
135 *
136 * UNDER_VOLTAGE Regulator output is under voltage.
137 * OVER_CURRENT Regulator output current is too high.
138 * REGULATION_OUT Regulator output is out of regulation.
139 * FAIL Regulator output has failed.
140 * OVER_TEMP Regulator over temp.
141 *
142 * NOTE: These errors can be OR'ed together.
143 */
144
145 #define REGULATOR_ERROR_UNDER_VOLTAGE BIT(1)
146 #define REGULATOR_ERROR_OVER_CURRENT BIT(2)
147 #define REGULATOR_ERROR_REGULATION_OUT BIT(3)
148 #define REGULATOR_ERROR_FAIL BIT(4)
149 #define REGULATOR_ERROR_OVER_TEMP BIT(5)
150
151 #define REGULATOR_ERROR_UNDER_VOLTAGE_WARN BIT(6)
152 #define REGULATOR_ERROR_OVER_CURRENT_WARN BIT(7)
153 #define REGULATOR_ERROR_OVER_VOLTAGE_WARN BIT(8)
154 #define REGULATOR_ERROR_OVER_TEMP_WARN BIT(9)
155
156 /**
157 * struct pre_voltage_change_data - Data sent with PRE_VOLTAGE_CHANGE event
158 *
159 * @old_uV: Current voltage before change.
160 * @min_uV: Min voltage we'll change to.
161 * @max_uV: Max voltage we'll change to.
162 */
163 struct pre_voltage_change_data {
164 unsigned long old_uV;
165 unsigned long min_uV;
166 unsigned long max_uV;
167 };
168
169 struct regulator;
170
171 /**
172 * struct regulator_bulk_data - Data used for bulk regulator operations.
173 *
174 * @supply: The name of the supply. Initialised by the user before
175 * using the bulk regulator APIs.
176 * @init_load_uA: After getting the regulator, regulator_set_load() will be
177 * called with this load. Initialised by the user before
178 * using the bulk regulator APIs.
179 * @consumer: The regulator consumer for the supply. This will be managed
180 * by the bulk API.
181 *
182 * The regulator APIs provide a series of regulator_bulk_() API calls as
183 * a convenience to consumers which require multiple supplies. This
184 * structure is used to manage data for these calls.
185 */
186 struct regulator_bulk_data {
187 const char *supply;
188 int init_load_uA;
189 struct regulator *consumer;
190
191 /* private: Internal use */
192 int ret;
193 };
194
195 #if defined(CONFIG_REGULATOR)
196
197 /* regulator get and put */
198 struct regulator *__must_check regulator_get(struct device *dev,
199 const char *id);
200 struct regulator *__must_check devm_regulator_get(struct device *dev,
201 const char *id);
202 struct regulator *__must_check regulator_get_exclusive(struct device *dev,
203 const char *id);
204 struct regulator *__must_check devm_regulator_get_exclusive(struct device *dev,
205 const char *id);
206 struct regulator *__must_check regulator_get_optional(struct device *dev,
207 const char *id);
208 struct regulator *__must_check devm_regulator_get_optional(struct device *dev,
209 const char *id);
210 int devm_regulator_get_enable(struct device *dev, const char *id);
211 int devm_regulator_get_enable_optional(struct device *dev, const char *id);
212 void regulator_put(struct regulator *regulator);
213 void devm_regulator_put(struct regulator *regulator);
214
215 int regulator_register_supply_alias(struct device *dev, const char *id,
216 struct device *alias_dev,
217 const char *alias_id);
218 void regulator_unregister_supply_alias(struct device *dev, const char *id);
219
220 int regulator_bulk_register_supply_alias(struct device *dev,
221 const char *const *id,
222 struct device *alias_dev,
223 const char *const *alias_id,
224 int num_id);
225 void regulator_bulk_unregister_supply_alias(struct device *dev,
226 const char * const *id, int num_id);
227
228 int devm_regulator_register_supply_alias(struct device *dev, const char *id,
229 struct device *alias_dev,
230 const char *alias_id);
231
232 int devm_regulator_bulk_register_supply_alias(struct device *dev,
233 const char *const *id,
234 struct device *alias_dev,
235 const char *const *alias_id,
236 int num_id);
237
238 /* regulator output control and status */
239 int __must_check regulator_enable(struct regulator *regulator);
240 int regulator_disable(struct regulator *regulator);
241 int regulator_force_disable(struct regulator *regulator);
242 int regulator_is_enabled(struct regulator *regulator);
243 int regulator_disable_deferred(struct regulator *regulator, int ms);
244
245 int __must_check regulator_bulk_get(struct device *dev, int num_consumers,
246 struct regulator_bulk_data *consumers);
247 int __must_check devm_regulator_bulk_get(struct device *dev, int num_consumers,
248 struct regulator_bulk_data *consumers);
249 void devm_regulator_bulk_put(struct regulator_bulk_data *consumers);
250 int __must_check devm_regulator_bulk_get_const(
251 struct device *dev, int num_consumers,
252 const struct regulator_bulk_data *in_consumers,
253 struct regulator_bulk_data **out_consumers);
254 int __must_check regulator_bulk_enable(int num_consumers,
255 struct regulator_bulk_data *consumers);
256 int devm_regulator_bulk_get_enable(struct device *dev, int num_consumers,
257 const char * const *id);
258 int regulator_bulk_disable(int num_consumers,
259 struct regulator_bulk_data *consumers);
260 int regulator_bulk_force_disable(int num_consumers,
261 struct regulator_bulk_data *consumers);
262 void regulator_bulk_free(int num_consumers,
263 struct regulator_bulk_data *consumers);
264
265 int regulator_count_voltages(struct regulator *regulator);
266 int regulator_list_voltage(struct regulator *regulator, unsigned selector);
267 int regulator_is_supported_voltage(struct regulator *regulator,
268 int min_uV, int max_uV);
269 unsigned int regulator_get_linear_step(struct regulator *regulator);
270 int regulator_set_voltage(struct regulator *regulator, int min_uV, int max_uV);
271 int regulator_set_voltage_time(struct regulator *regulator,
272 int old_uV, int new_uV);
273 int regulator_get_voltage(struct regulator *regulator);
274 int regulator_sync_voltage(struct regulator *regulator);
275 int regulator_set_current_limit(struct regulator *regulator,
276 int min_uA, int max_uA);
277 int regulator_get_current_limit(struct regulator *regulator);
278
279 int regulator_set_mode(struct regulator *regulator, unsigned int mode);
280 unsigned int regulator_get_mode(struct regulator *regulator);
281 int regulator_get_error_flags(struct regulator *regulator,
282 unsigned int *flags);
283 int regulator_set_load(struct regulator *regulator, int load_uA);
284
285 int regulator_allow_bypass(struct regulator *regulator, bool allow);
286
287 struct regmap *regulator_get_regmap(struct regulator *regulator);
288 int regulator_get_hardware_vsel_register(struct regulator *regulator,
289 unsigned *vsel_reg,
290 unsigned *vsel_mask);
291 int regulator_list_hardware_vsel(struct regulator *regulator,
292 unsigned selector);
293
294 /* regulator notifier block */
295 int regulator_register_notifier(struct regulator *regulator,
296 struct notifier_block *nb);
297 int devm_regulator_register_notifier(struct regulator *regulator,
298 struct notifier_block *nb);
299 int regulator_unregister_notifier(struct regulator *regulator,
300 struct notifier_block *nb);
301 void devm_regulator_unregister_notifier(struct regulator *regulator,
302 struct notifier_block *nb);
303
304 /* regulator suspend */
305 int regulator_suspend_enable(struct regulator_dev *rdev,
306 suspend_state_t state);
307 int regulator_suspend_disable(struct regulator_dev *rdev,
308 suspend_state_t state);
309 int regulator_set_suspend_voltage(struct regulator *regulator, int min_uV,
310 int max_uV, suspend_state_t state);
311
312 /* driver data - core doesn't touch */
313 void *regulator_get_drvdata(struct regulator *regulator);
314 void regulator_set_drvdata(struct regulator *regulator, void *data);
315
316 /* misc helpers */
317
318 void regulator_bulk_set_supply_names(struct regulator_bulk_data *consumers,
319 const char *const *supply_names,
320 unsigned int num_supplies);
321
322 bool regulator_is_equal(struct regulator *reg1, struct regulator *reg2);
323
324 #else
325
326 /*
327 * Make sure client drivers will still build on systems with no software
328 * controllable voltage or current regulators.
329 */
regulator_get(struct device * dev,const char * id)330 static inline struct regulator *__must_check regulator_get(struct device *dev,
331 const char *id)
332 {
333 /* Nothing except the stubbed out regulator API should be
334 * looking at the value except to check if it is an error
335 * value. Drivers are free to handle NULL specifically by
336 * skipping all regulator API calls, but they don't have to.
337 * Drivers which don't, should make sure they properly handle
338 * corner cases of the API, such as regulator_get_voltage()
339 * returning 0.
340 */
341 return NULL;
342 }
343
344 static inline struct regulator *__must_check
devm_regulator_get(struct device * dev,const char * id)345 devm_regulator_get(struct device *dev, const char *id)
346 {
347 return NULL;
348 }
349
350 static inline struct regulator *__must_check
regulator_get_exclusive(struct device * dev,const char * id)351 regulator_get_exclusive(struct device *dev, const char *id)
352 {
353 return ERR_PTR(-ENODEV);
354 }
355
356 static inline struct regulator *__must_check
devm_regulator_get_exclusive(struct device * dev,const char * id)357 devm_regulator_get_exclusive(struct device *dev, const char *id)
358 {
359 return ERR_PTR(-ENODEV);
360 }
361
devm_regulator_get_enable(struct device * dev,const char * id)362 static inline int devm_regulator_get_enable(struct device *dev, const char *id)
363 {
364 return -ENODEV;
365 }
366
devm_regulator_get_enable_optional(struct device * dev,const char * id)367 static inline int devm_regulator_get_enable_optional(struct device *dev,
368 const char *id)
369 {
370 return -ENODEV;
371 }
372
373 static inline struct regulator *__must_check
regulator_get_optional(struct device * dev,const char * id)374 regulator_get_optional(struct device *dev, const char *id)
375 {
376 return ERR_PTR(-ENODEV);
377 }
378
379
380 static inline struct regulator *__must_check
devm_regulator_get_optional(struct device * dev,const char * id)381 devm_regulator_get_optional(struct device *dev, const char *id)
382 {
383 return ERR_PTR(-ENODEV);
384 }
385
regulator_put(struct regulator * regulator)386 static inline void regulator_put(struct regulator *regulator)
387 {
388 }
389
devm_regulator_put(struct regulator * regulator)390 static inline void devm_regulator_put(struct regulator *regulator)
391 {
392 }
393
devm_regulator_bulk_put(struct regulator_bulk_data * consumers)394 static inline void devm_regulator_bulk_put(struct regulator_bulk_data *consumers)
395 {
396 }
397
regulator_register_supply_alias(struct device * dev,const char * id,struct device * alias_dev,const char * alias_id)398 static inline int regulator_register_supply_alias(struct device *dev,
399 const char *id,
400 struct device *alias_dev,
401 const char *alias_id)
402 {
403 return 0;
404 }
405
regulator_unregister_supply_alias(struct device * dev,const char * id)406 static inline void regulator_unregister_supply_alias(struct device *dev,
407 const char *id)
408 {
409 }
410
regulator_bulk_register_supply_alias(struct device * dev,const char * const * id,struct device * alias_dev,const char * const * alias_id,int num_id)411 static inline int regulator_bulk_register_supply_alias(struct device *dev,
412 const char *const *id,
413 struct device *alias_dev,
414 const char * const *alias_id,
415 int num_id)
416 {
417 return 0;
418 }
419
regulator_bulk_unregister_supply_alias(struct device * dev,const char * const * id,int num_id)420 static inline void regulator_bulk_unregister_supply_alias(struct device *dev,
421 const char * const *id,
422 int num_id)
423 {
424 }
425
devm_regulator_register_supply_alias(struct device * dev,const char * id,struct device * alias_dev,const char * alias_id)426 static inline int devm_regulator_register_supply_alias(struct device *dev,
427 const char *id,
428 struct device *alias_dev,
429 const char *alias_id)
430 {
431 return 0;
432 }
433
devm_regulator_bulk_register_supply_alias(struct device * dev,const char * const * id,struct device * alias_dev,const char * const * alias_id,int num_id)434 static inline int devm_regulator_bulk_register_supply_alias(struct device *dev,
435 const char *const *id,
436 struct device *alias_dev,
437 const char *const *alias_id,
438 int num_id)
439 {
440 return 0;
441 }
442
regulator_enable(struct regulator * regulator)443 static inline int regulator_enable(struct regulator *regulator)
444 {
445 return 0;
446 }
447
regulator_disable(struct regulator * regulator)448 static inline int regulator_disable(struct regulator *regulator)
449 {
450 return 0;
451 }
452
regulator_force_disable(struct regulator * regulator)453 static inline int regulator_force_disable(struct regulator *regulator)
454 {
455 return 0;
456 }
457
regulator_disable_deferred(struct regulator * regulator,int ms)458 static inline int regulator_disable_deferred(struct regulator *regulator,
459 int ms)
460 {
461 return 0;
462 }
463
regulator_is_enabled(struct regulator * regulator)464 static inline int regulator_is_enabled(struct regulator *regulator)
465 {
466 return 1;
467 }
468
regulator_bulk_get(struct device * dev,int num_consumers,struct regulator_bulk_data * consumers)469 static inline int regulator_bulk_get(struct device *dev,
470 int num_consumers,
471 struct regulator_bulk_data *consumers)
472 {
473 return 0;
474 }
475
devm_regulator_bulk_get(struct device * dev,int num_consumers,struct regulator_bulk_data * consumers)476 static inline int devm_regulator_bulk_get(struct device *dev, int num_consumers,
477 struct regulator_bulk_data *consumers)
478 {
479 return 0;
480 }
481
regulator_bulk_enable(int num_consumers,struct regulator_bulk_data * consumers)482 static inline int regulator_bulk_enable(int num_consumers,
483 struct regulator_bulk_data *consumers)
484 {
485 return 0;
486 }
487
devm_regulator_bulk_get_enable(struct device * dev,int num_consumers,const char * const * id)488 static inline int devm_regulator_bulk_get_enable(struct device *dev,
489 int num_consumers,
490 const char * const *id)
491 {
492 return 0;
493 }
494
regulator_bulk_disable(int num_consumers,struct regulator_bulk_data * consumers)495 static inline int regulator_bulk_disable(int num_consumers,
496 struct regulator_bulk_data *consumers)
497 {
498 return 0;
499 }
500
regulator_bulk_force_disable(int num_consumers,struct regulator_bulk_data * consumers)501 static inline int regulator_bulk_force_disable(int num_consumers,
502 struct regulator_bulk_data *consumers)
503 {
504 return 0;
505 }
506
regulator_bulk_free(int num_consumers,struct regulator_bulk_data * consumers)507 static inline void regulator_bulk_free(int num_consumers,
508 struct regulator_bulk_data *consumers)
509 {
510 }
511
regulator_set_voltage(struct regulator * regulator,int min_uV,int max_uV)512 static inline int regulator_set_voltage(struct regulator *regulator,
513 int min_uV, int max_uV)
514 {
515 return 0;
516 }
517
regulator_set_voltage_time(struct regulator * regulator,int old_uV,int new_uV)518 static inline int regulator_set_voltage_time(struct regulator *regulator,
519 int old_uV, int new_uV)
520 {
521 return 0;
522 }
523
regulator_get_voltage(struct regulator * regulator)524 static inline int regulator_get_voltage(struct regulator *regulator)
525 {
526 return -EINVAL;
527 }
528
regulator_sync_voltage(struct regulator * regulator)529 static inline int regulator_sync_voltage(struct regulator *regulator)
530 {
531 return -EINVAL;
532 }
533
regulator_is_supported_voltage(struct regulator * regulator,int min_uV,int max_uV)534 static inline int regulator_is_supported_voltage(struct regulator *regulator,
535 int min_uV, int max_uV)
536 {
537 return 0;
538 }
539
regulator_get_linear_step(struct regulator * regulator)540 static inline unsigned int regulator_get_linear_step(struct regulator *regulator)
541 {
542 return 0;
543 }
544
regulator_set_current_limit(struct regulator * regulator,int min_uA,int max_uA)545 static inline int regulator_set_current_limit(struct regulator *regulator,
546 int min_uA, int max_uA)
547 {
548 return 0;
549 }
550
regulator_get_current_limit(struct regulator * regulator)551 static inline int regulator_get_current_limit(struct regulator *regulator)
552 {
553 return 0;
554 }
555
regulator_set_mode(struct regulator * regulator,unsigned int mode)556 static inline int regulator_set_mode(struct regulator *regulator,
557 unsigned int mode)
558 {
559 return 0;
560 }
561
regulator_get_mode(struct regulator * regulator)562 static inline unsigned int regulator_get_mode(struct regulator *regulator)
563 {
564 return REGULATOR_MODE_NORMAL;
565 }
566
regulator_get_error_flags(struct regulator * regulator,unsigned int * flags)567 static inline int regulator_get_error_flags(struct regulator *regulator,
568 unsigned int *flags)
569 {
570 return -EINVAL;
571 }
572
regulator_set_load(struct regulator * regulator,int load_uA)573 static inline int regulator_set_load(struct regulator *regulator, int load_uA)
574 {
575 return 0;
576 }
577
regulator_allow_bypass(struct regulator * regulator,bool allow)578 static inline int regulator_allow_bypass(struct regulator *regulator,
579 bool allow)
580 {
581 return 0;
582 }
583
regulator_get_regmap(struct regulator * regulator)584 static inline struct regmap *regulator_get_regmap(struct regulator *regulator)
585 {
586 return ERR_PTR(-EOPNOTSUPP);
587 }
588
regulator_get_hardware_vsel_register(struct regulator * regulator,unsigned * vsel_reg,unsigned * vsel_mask)589 static inline int regulator_get_hardware_vsel_register(struct regulator *regulator,
590 unsigned *vsel_reg,
591 unsigned *vsel_mask)
592 {
593 return -EOPNOTSUPP;
594 }
595
regulator_list_hardware_vsel(struct regulator * regulator,unsigned selector)596 static inline int regulator_list_hardware_vsel(struct regulator *regulator,
597 unsigned selector)
598 {
599 return -EOPNOTSUPP;
600 }
601
regulator_register_notifier(struct regulator * regulator,struct notifier_block * nb)602 static inline int regulator_register_notifier(struct regulator *regulator,
603 struct notifier_block *nb)
604 {
605 return 0;
606 }
607
devm_regulator_register_notifier(struct regulator * regulator,struct notifier_block * nb)608 static inline int devm_regulator_register_notifier(struct regulator *regulator,
609 struct notifier_block *nb)
610 {
611 return 0;
612 }
613
regulator_unregister_notifier(struct regulator * regulator,struct notifier_block * nb)614 static inline int regulator_unregister_notifier(struct regulator *regulator,
615 struct notifier_block *nb)
616 {
617 return 0;
618 }
619
devm_regulator_unregister_notifier(struct regulator * regulator,struct notifier_block * nb)620 static inline int devm_regulator_unregister_notifier(struct regulator *regulator,
621 struct notifier_block *nb)
622 {
623 return 0;
624 }
625
regulator_suspend_enable(struct regulator_dev * rdev,suspend_state_t state)626 static inline int regulator_suspend_enable(struct regulator_dev *rdev,
627 suspend_state_t state)
628 {
629 return -EINVAL;
630 }
631
regulator_suspend_disable(struct regulator_dev * rdev,suspend_state_t state)632 static inline int regulator_suspend_disable(struct regulator_dev *rdev,
633 suspend_state_t state)
634 {
635 return -EINVAL;
636 }
637
regulator_set_suspend_voltage(struct regulator * regulator,int min_uV,int max_uV,suspend_state_t state)638 static inline int regulator_set_suspend_voltage(struct regulator *regulator,
639 int min_uV, int max_uV,
640 suspend_state_t state)
641 {
642 return -EINVAL;
643 }
644
regulator_get_drvdata(struct regulator * regulator)645 static inline void *regulator_get_drvdata(struct regulator *regulator)
646 {
647 return NULL;
648 }
649
regulator_set_drvdata(struct regulator * regulator,void * data)650 static inline void regulator_set_drvdata(struct regulator *regulator,
651 void *data)
652 {
653 }
654
regulator_count_voltages(struct regulator * regulator)655 static inline int regulator_count_voltages(struct regulator *regulator)
656 {
657 return 0;
658 }
659
regulator_list_voltage(struct regulator * regulator,unsigned selector)660 static inline int regulator_list_voltage(struct regulator *regulator, unsigned selector)
661 {
662 return -EINVAL;
663 }
664
665 static inline void
regulator_bulk_set_supply_names(struct regulator_bulk_data * consumers,const char * const * supply_names,unsigned int num_supplies)666 regulator_bulk_set_supply_names(struct regulator_bulk_data *consumers,
667 const char *const *supply_names,
668 unsigned int num_supplies)
669 {
670 }
671
672 static inline bool
regulator_is_equal(struct regulator * reg1,struct regulator * reg2)673 regulator_is_equal(struct regulator *reg1, struct regulator *reg2)
674 {
675 return false;
676 }
677 #endif
678
regulator_set_voltage_triplet(struct regulator * regulator,int min_uV,int target_uV,int max_uV)679 static inline int regulator_set_voltage_triplet(struct regulator *regulator,
680 int min_uV, int target_uV,
681 int max_uV)
682 {
683 if (regulator_set_voltage(regulator, target_uV, max_uV) == 0)
684 return 0;
685
686 return regulator_set_voltage(regulator, min_uV, max_uV);
687 }
688
regulator_set_voltage_tol(struct regulator * regulator,int new_uV,int tol_uV)689 static inline int regulator_set_voltage_tol(struct regulator *regulator,
690 int new_uV, int tol_uV)
691 {
692 if (regulator_set_voltage(regulator, new_uV, new_uV + tol_uV) == 0)
693 return 0;
694 else
695 return regulator_set_voltage(regulator,
696 new_uV - tol_uV, new_uV + tol_uV);
697 }
698
regulator_is_supported_voltage_tol(struct regulator * regulator,int target_uV,int tol_uV)699 static inline int regulator_is_supported_voltage_tol(struct regulator *regulator,
700 int target_uV, int tol_uV)
701 {
702 return regulator_is_supported_voltage(regulator,
703 target_uV - tol_uV,
704 target_uV + tol_uV);
705 }
706
707 #endif
708