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 of_regulator_bulk_get_all(struct device *dev, struct device_node *np,
248 struct regulator_bulk_data **consumers);
249 int __must_check devm_regulator_bulk_get(struct device *dev, int num_consumers,
250 struct regulator_bulk_data *consumers);
251 void devm_regulator_bulk_put(struct regulator_bulk_data *consumers);
252 int __must_check devm_regulator_bulk_get_exclusive(struct device *dev, int num_consumers,
253 struct regulator_bulk_data *consumers);
254 int __must_check devm_regulator_bulk_get_const(
255 struct device *dev, int num_consumers,
256 const struct regulator_bulk_data *in_consumers,
257 struct regulator_bulk_data **out_consumers);
258 int __must_check regulator_bulk_enable(int num_consumers,
259 struct regulator_bulk_data *consumers);
260 int devm_regulator_bulk_get_enable(struct device *dev, int num_consumers,
261 const char * const *id);
262 int regulator_bulk_disable(int num_consumers,
263 struct regulator_bulk_data *consumers);
264 int regulator_bulk_force_disable(int num_consumers,
265 struct regulator_bulk_data *consumers);
266 void regulator_bulk_free(int num_consumers,
267 struct regulator_bulk_data *consumers);
268
269 int regulator_count_voltages(struct regulator *regulator);
270 int regulator_list_voltage(struct regulator *regulator, unsigned selector);
271 int regulator_is_supported_voltage(struct regulator *regulator,
272 int min_uV, int max_uV);
273 unsigned int regulator_get_linear_step(struct regulator *regulator);
274 int regulator_set_voltage(struct regulator *regulator, int min_uV, int max_uV);
275 int regulator_set_voltage_time(struct regulator *regulator,
276 int old_uV, int new_uV);
277 int regulator_get_voltage(struct regulator *regulator);
278 int regulator_sync_voltage(struct regulator *regulator);
279 int regulator_set_current_limit(struct regulator *regulator,
280 int min_uA, int max_uA);
281 int regulator_get_current_limit(struct regulator *regulator);
282
283 int regulator_set_mode(struct regulator *regulator, unsigned int mode);
284 unsigned int regulator_get_mode(struct regulator *regulator);
285 int regulator_get_error_flags(struct regulator *regulator,
286 unsigned int *flags);
287 int regulator_set_load(struct regulator *regulator, int load_uA);
288
289 int regulator_allow_bypass(struct regulator *regulator, bool allow);
290
291 struct regmap *regulator_get_regmap(struct regulator *regulator);
292 int regulator_get_hardware_vsel_register(struct regulator *regulator,
293 unsigned *vsel_reg,
294 unsigned *vsel_mask);
295 int regulator_list_hardware_vsel(struct regulator *regulator,
296 unsigned selector);
297
298 /* regulator notifier block */
299 int regulator_register_notifier(struct regulator *regulator,
300 struct notifier_block *nb);
301 int devm_regulator_register_notifier(struct regulator *regulator,
302 struct notifier_block *nb);
303 int regulator_unregister_notifier(struct regulator *regulator,
304 struct notifier_block *nb);
305 void devm_regulator_unregister_notifier(struct regulator *regulator,
306 struct notifier_block *nb);
307
308 /* regulator suspend */
309 int regulator_suspend_enable(struct regulator_dev *rdev,
310 suspend_state_t state);
311 int regulator_suspend_disable(struct regulator_dev *rdev,
312 suspend_state_t state);
313 int regulator_set_suspend_voltage(struct regulator *regulator, int min_uV,
314 int max_uV, suspend_state_t state);
315
316 /* driver data - core doesn't touch */
317 void *regulator_get_drvdata(struct regulator *regulator);
318 void regulator_set_drvdata(struct regulator *regulator, void *data);
319
320 /* misc helpers */
321
322 void regulator_bulk_set_supply_names(struct regulator_bulk_data *consumers,
323 const char *const *supply_names,
324 unsigned int num_supplies);
325
326 bool regulator_is_equal(struct regulator *reg1, struct regulator *reg2);
327
328 #else
329
330 /*
331 * Make sure client drivers will still build on systems with no software
332 * controllable voltage or current regulators.
333 */
regulator_get(struct device * dev,const char * id)334 static inline struct regulator *__must_check regulator_get(struct device *dev,
335 const char *id)
336 {
337 /* Nothing except the stubbed out regulator API should be
338 * looking at the value except to check if it is an error
339 * value. Drivers are free to handle NULL specifically by
340 * skipping all regulator API calls, but they don't have to.
341 * Drivers which don't, should make sure they properly handle
342 * corner cases of the API, such as regulator_get_voltage()
343 * returning 0.
344 */
345 return NULL;
346 }
347
348 static inline struct regulator *__must_check
devm_regulator_get(struct device * dev,const char * id)349 devm_regulator_get(struct device *dev, const char *id)
350 {
351 return NULL;
352 }
353
354 static inline struct regulator *__must_check
regulator_get_exclusive(struct device * dev,const char * id)355 regulator_get_exclusive(struct device *dev, const char *id)
356 {
357 return ERR_PTR(-ENODEV);
358 }
359
360 static inline struct regulator *__must_check
devm_regulator_get_exclusive(struct device * dev,const char * id)361 devm_regulator_get_exclusive(struct device *dev, const char *id)
362 {
363 return ERR_PTR(-ENODEV);
364 }
365
devm_regulator_get_enable(struct device * dev,const char * id)366 static inline int devm_regulator_get_enable(struct device *dev, const char *id)
367 {
368 return -ENODEV;
369 }
370
devm_regulator_get_enable_optional(struct device * dev,const char * id)371 static inline int devm_regulator_get_enable_optional(struct device *dev,
372 const char *id)
373 {
374 return -ENODEV;
375 }
376
377 static inline struct regulator *__must_check
regulator_get_optional(struct device * dev,const char * id)378 regulator_get_optional(struct device *dev, const char *id)
379 {
380 return ERR_PTR(-ENODEV);
381 }
382
383
384 static inline struct regulator *__must_check
devm_regulator_get_optional(struct device * dev,const char * id)385 devm_regulator_get_optional(struct device *dev, const char *id)
386 {
387 return ERR_PTR(-ENODEV);
388 }
389
regulator_put(struct regulator * regulator)390 static inline void regulator_put(struct regulator *regulator)
391 {
392 }
393
devm_regulator_put(struct regulator * regulator)394 static inline void devm_regulator_put(struct regulator *regulator)
395 {
396 }
397
devm_regulator_bulk_put(struct regulator_bulk_data * consumers)398 static inline void devm_regulator_bulk_put(struct regulator_bulk_data *consumers)
399 {
400 }
401
regulator_register_supply_alias(struct device * dev,const char * id,struct device * alias_dev,const char * alias_id)402 static inline int regulator_register_supply_alias(struct device *dev,
403 const char *id,
404 struct device *alias_dev,
405 const char *alias_id)
406 {
407 return 0;
408 }
409
regulator_unregister_supply_alias(struct device * dev,const char * id)410 static inline void regulator_unregister_supply_alias(struct device *dev,
411 const char *id)
412 {
413 }
414
regulator_bulk_register_supply_alias(struct device * dev,const char * const * id,struct device * alias_dev,const char * const * alias_id,int num_id)415 static inline int regulator_bulk_register_supply_alias(struct device *dev,
416 const char *const *id,
417 struct device *alias_dev,
418 const char * const *alias_id,
419 int num_id)
420 {
421 return 0;
422 }
423
regulator_bulk_unregister_supply_alias(struct device * dev,const char * const * id,int num_id)424 static inline void regulator_bulk_unregister_supply_alias(struct device *dev,
425 const char * const *id,
426 int num_id)
427 {
428 }
429
devm_regulator_register_supply_alias(struct device * dev,const char * id,struct device * alias_dev,const char * alias_id)430 static inline int devm_regulator_register_supply_alias(struct device *dev,
431 const char *id,
432 struct device *alias_dev,
433 const char *alias_id)
434 {
435 return 0;
436 }
437
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)438 static inline int devm_regulator_bulk_register_supply_alias(struct device *dev,
439 const char *const *id,
440 struct device *alias_dev,
441 const char *const *alias_id,
442 int num_id)
443 {
444 return 0;
445 }
446
regulator_enable(struct regulator * regulator)447 static inline int regulator_enable(struct regulator *regulator)
448 {
449 return 0;
450 }
451
regulator_disable(struct regulator * regulator)452 static inline int regulator_disable(struct regulator *regulator)
453 {
454 return 0;
455 }
456
regulator_force_disable(struct regulator * regulator)457 static inline int regulator_force_disable(struct regulator *regulator)
458 {
459 return 0;
460 }
461
regulator_disable_deferred(struct regulator * regulator,int ms)462 static inline int regulator_disable_deferred(struct regulator *regulator,
463 int ms)
464 {
465 return 0;
466 }
467
regulator_is_enabled(struct regulator * regulator)468 static inline int regulator_is_enabled(struct regulator *regulator)
469 {
470 return 1;
471 }
472
regulator_bulk_get(struct device * dev,int num_consumers,struct regulator_bulk_data * consumers)473 static inline int regulator_bulk_get(struct device *dev,
474 int num_consumers,
475 struct regulator_bulk_data *consumers)
476 {
477 return 0;
478 }
479
devm_regulator_bulk_get(struct device * dev,int num_consumers,struct regulator_bulk_data * consumers)480 static inline int devm_regulator_bulk_get(struct device *dev, int num_consumers,
481 struct regulator_bulk_data *consumers)
482 {
483 return 0;
484 }
485
of_regulator_bulk_get_all(struct device * dev,struct device_node * np,struct regulator_bulk_data ** consumers)486 static inline int of_regulator_bulk_get_all(struct device *dev, struct device_node *np,
487 struct regulator_bulk_data **consumers)
488 {
489 return 0;
490 }
491
regulator_bulk_enable(int num_consumers,struct regulator_bulk_data * consumers)492 static inline int regulator_bulk_enable(int num_consumers,
493 struct regulator_bulk_data *consumers)
494 {
495 return 0;
496 }
497
devm_regulator_bulk_get_enable(struct device * dev,int num_consumers,const char * const * id)498 static inline int devm_regulator_bulk_get_enable(struct device *dev,
499 int num_consumers,
500 const char * const *id)
501 {
502 return 0;
503 }
504
regulator_bulk_disable(int num_consumers,struct regulator_bulk_data * consumers)505 static inline int regulator_bulk_disable(int num_consumers,
506 struct regulator_bulk_data *consumers)
507 {
508 return 0;
509 }
510
regulator_bulk_force_disable(int num_consumers,struct regulator_bulk_data * consumers)511 static inline int regulator_bulk_force_disable(int num_consumers,
512 struct regulator_bulk_data *consumers)
513 {
514 return 0;
515 }
516
regulator_bulk_free(int num_consumers,struct regulator_bulk_data * consumers)517 static inline void regulator_bulk_free(int num_consumers,
518 struct regulator_bulk_data *consumers)
519 {
520 }
521
regulator_set_voltage(struct regulator * regulator,int min_uV,int max_uV)522 static inline int regulator_set_voltage(struct regulator *regulator,
523 int min_uV, int max_uV)
524 {
525 return 0;
526 }
527
regulator_set_voltage_time(struct regulator * regulator,int old_uV,int new_uV)528 static inline int regulator_set_voltage_time(struct regulator *regulator,
529 int old_uV, int new_uV)
530 {
531 return 0;
532 }
533
regulator_get_voltage(struct regulator * regulator)534 static inline int regulator_get_voltage(struct regulator *regulator)
535 {
536 return -EINVAL;
537 }
538
regulator_sync_voltage(struct regulator * regulator)539 static inline int regulator_sync_voltage(struct regulator *regulator)
540 {
541 return -EINVAL;
542 }
543
regulator_is_supported_voltage(struct regulator * regulator,int min_uV,int max_uV)544 static inline int regulator_is_supported_voltage(struct regulator *regulator,
545 int min_uV, int max_uV)
546 {
547 return 0;
548 }
549
regulator_get_linear_step(struct regulator * regulator)550 static inline unsigned int regulator_get_linear_step(struct regulator *regulator)
551 {
552 return 0;
553 }
554
regulator_set_current_limit(struct regulator * regulator,int min_uA,int max_uA)555 static inline int regulator_set_current_limit(struct regulator *regulator,
556 int min_uA, int max_uA)
557 {
558 return 0;
559 }
560
regulator_get_current_limit(struct regulator * regulator)561 static inline int regulator_get_current_limit(struct regulator *regulator)
562 {
563 return 0;
564 }
565
regulator_set_mode(struct regulator * regulator,unsigned int mode)566 static inline int regulator_set_mode(struct regulator *regulator,
567 unsigned int mode)
568 {
569 return 0;
570 }
571
regulator_get_mode(struct regulator * regulator)572 static inline unsigned int regulator_get_mode(struct regulator *regulator)
573 {
574 return REGULATOR_MODE_NORMAL;
575 }
576
regulator_get_error_flags(struct regulator * regulator,unsigned int * flags)577 static inline int regulator_get_error_flags(struct regulator *regulator,
578 unsigned int *flags)
579 {
580 return -EINVAL;
581 }
582
regulator_set_load(struct regulator * regulator,int load_uA)583 static inline int regulator_set_load(struct regulator *regulator, int load_uA)
584 {
585 return 0;
586 }
587
regulator_allow_bypass(struct regulator * regulator,bool allow)588 static inline int regulator_allow_bypass(struct regulator *regulator,
589 bool allow)
590 {
591 return 0;
592 }
593
regulator_get_regmap(struct regulator * regulator)594 static inline struct regmap *regulator_get_regmap(struct regulator *regulator)
595 {
596 return ERR_PTR(-EOPNOTSUPP);
597 }
598
regulator_get_hardware_vsel_register(struct regulator * regulator,unsigned * vsel_reg,unsigned * vsel_mask)599 static inline int regulator_get_hardware_vsel_register(struct regulator *regulator,
600 unsigned *vsel_reg,
601 unsigned *vsel_mask)
602 {
603 return -EOPNOTSUPP;
604 }
605
regulator_list_hardware_vsel(struct regulator * regulator,unsigned selector)606 static inline int regulator_list_hardware_vsel(struct regulator *regulator,
607 unsigned selector)
608 {
609 return -EOPNOTSUPP;
610 }
611
regulator_register_notifier(struct regulator * regulator,struct notifier_block * nb)612 static inline int regulator_register_notifier(struct regulator *regulator,
613 struct notifier_block *nb)
614 {
615 return 0;
616 }
617
devm_regulator_register_notifier(struct regulator * regulator,struct notifier_block * nb)618 static inline int devm_regulator_register_notifier(struct regulator *regulator,
619 struct notifier_block *nb)
620 {
621 return 0;
622 }
623
regulator_unregister_notifier(struct regulator * regulator,struct notifier_block * nb)624 static inline int regulator_unregister_notifier(struct regulator *regulator,
625 struct notifier_block *nb)
626 {
627 return 0;
628 }
629
devm_regulator_unregister_notifier(struct regulator * regulator,struct notifier_block * nb)630 static inline int devm_regulator_unregister_notifier(struct regulator *regulator,
631 struct notifier_block *nb)
632 {
633 return 0;
634 }
635
regulator_suspend_enable(struct regulator_dev * rdev,suspend_state_t state)636 static inline int regulator_suspend_enable(struct regulator_dev *rdev,
637 suspend_state_t state)
638 {
639 return -EINVAL;
640 }
641
regulator_suspend_disable(struct regulator_dev * rdev,suspend_state_t state)642 static inline int regulator_suspend_disable(struct regulator_dev *rdev,
643 suspend_state_t state)
644 {
645 return -EINVAL;
646 }
647
regulator_set_suspend_voltage(struct regulator * regulator,int min_uV,int max_uV,suspend_state_t state)648 static inline int regulator_set_suspend_voltage(struct regulator *regulator,
649 int min_uV, int max_uV,
650 suspend_state_t state)
651 {
652 return -EINVAL;
653 }
654
regulator_get_drvdata(struct regulator * regulator)655 static inline void *regulator_get_drvdata(struct regulator *regulator)
656 {
657 return NULL;
658 }
659
regulator_set_drvdata(struct regulator * regulator,void * data)660 static inline void regulator_set_drvdata(struct regulator *regulator,
661 void *data)
662 {
663 }
664
regulator_count_voltages(struct regulator * regulator)665 static inline int regulator_count_voltages(struct regulator *regulator)
666 {
667 return 0;
668 }
669
regulator_list_voltage(struct regulator * regulator,unsigned selector)670 static inline int regulator_list_voltage(struct regulator *regulator, unsigned selector)
671 {
672 return -EINVAL;
673 }
674
675 static inline void
regulator_bulk_set_supply_names(struct regulator_bulk_data * consumers,const char * const * supply_names,unsigned int num_supplies)676 regulator_bulk_set_supply_names(struct regulator_bulk_data *consumers,
677 const char *const *supply_names,
678 unsigned int num_supplies)
679 {
680 }
681
682 static inline bool
regulator_is_equal(struct regulator * reg1,struct regulator * reg2)683 regulator_is_equal(struct regulator *reg1, struct regulator *reg2)
684 {
685 return false;
686 }
687 #endif
688
regulator_set_voltage_triplet(struct regulator * regulator,int min_uV,int target_uV,int max_uV)689 static inline int regulator_set_voltage_triplet(struct regulator *regulator,
690 int min_uV, int target_uV,
691 int max_uV)
692 {
693 if (regulator_set_voltage(regulator, target_uV, max_uV) == 0)
694 return 0;
695
696 return regulator_set_voltage(regulator, min_uV, max_uV);
697 }
698
regulator_set_voltage_tol(struct regulator * regulator,int new_uV,int tol_uV)699 static inline int regulator_set_voltage_tol(struct regulator *regulator,
700 int new_uV, int tol_uV)
701 {
702 if (regulator_set_voltage(regulator, new_uV, new_uV + tol_uV) == 0)
703 return 0;
704 else
705 return regulator_set_voltage(regulator,
706 new_uV - tol_uV, new_uV + tol_uV);
707 }
708
regulator_is_supported_voltage_tol(struct regulator * regulator,int target_uV,int tol_uV)709 static inline int regulator_is_supported_voltage_tol(struct regulator *regulator,
710 int target_uV, int tol_uV)
711 {
712 return regulator_is_supported_voltage(regulator,
713 target_uV - tol_uV,
714 target_uV + tol_uV);
715 }
716
717 #endif
718