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 #include <regulator/regulator.h>
37
38 struct device;
39 struct notifier_block;
40 struct regmap;
41 struct regulator_dev;
42
43 /*
44 * Regulator operating modes.
45 *
46 * Regulators can run in a variety of different operating modes depending on
47 * output load. This allows further system power savings by selecting the
48 * best (and most efficient) regulator mode for a desired load.
49 *
50 * Most drivers will only care about NORMAL. The modes below are generic and
51 * will probably not match the naming convention of your regulator data sheet
52 * but should match the use cases in the datasheet.
53 *
54 * In order of power efficiency (least efficient at top).
55 *
56 * Mode Description
57 * FAST Regulator can handle fast changes in it's load.
58 * e.g. useful in CPU voltage & frequency scaling where
59 * load can quickly increase with CPU frequency increases.
60 *
61 * NORMAL Normal regulator power supply mode. Most drivers will
62 * use this mode.
63 *
64 * IDLE Regulator runs in a more efficient mode for light
65 * loads. Can be used for devices that have a low power
66 * requirement during periods of inactivity. This mode
67 * may be more noisy than NORMAL and may not be able
68 * to handle fast load switching.
69 *
70 * STANDBY Regulator runs in the most efficient mode for very
71 * light loads. Can be used by devices when they are
72 * in a sleep/standby state. This mode is likely to be
73 * the most noisy and may not be able to handle fast load
74 * switching.
75 *
76 * NOTE: Most regulators will only support a subset of these modes. Some
77 * will only just support NORMAL.
78 *
79 * These modes can be OR'ed together to make up a mask of valid register modes.
80 */
81
82 #define REGULATOR_MODE_INVALID 0x0
83 #define REGULATOR_MODE_FAST 0x1
84 #define REGULATOR_MODE_NORMAL 0x2
85 #define REGULATOR_MODE_IDLE 0x4
86 #define REGULATOR_MODE_STANDBY 0x8
87
88 /*
89 * Regulator errors that can be queried using regulator_get_error_flags
90 *
91 * UNDER_VOLTAGE Regulator output is under voltage.
92 * OVER_CURRENT Regulator output current is too high.
93 * REGULATION_OUT Regulator output is out of regulation.
94 * FAIL Regulator output has failed.
95 * OVER_TEMP Regulator over temp.
96 *
97 * NOTE: These errors can be OR'ed together.
98 */
99
100 #define REGULATOR_ERROR_UNDER_VOLTAGE BIT(1)
101 #define REGULATOR_ERROR_OVER_CURRENT BIT(2)
102 #define REGULATOR_ERROR_REGULATION_OUT BIT(3)
103 #define REGULATOR_ERROR_FAIL BIT(4)
104 #define REGULATOR_ERROR_OVER_TEMP BIT(5)
105
106 #define REGULATOR_ERROR_UNDER_VOLTAGE_WARN BIT(6)
107 #define REGULATOR_ERROR_OVER_CURRENT_WARN BIT(7)
108 #define REGULATOR_ERROR_OVER_VOLTAGE_WARN BIT(8)
109 #define REGULATOR_ERROR_OVER_TEMP_WARN BIT(9)
110
111 /**
112 * struct pre_voltage_change_data - Data sent with PRE_VOLTAGE_CHANGE event
113 *
114 * @old_uV: Current voltage before change.
115 * @min_uV: Min voltage we'll change to.
116 * @max_uV: Max voltage we'll change to.
117 */
118 struct pre_voltage_change_data {
119 unsigned long old_uV;
120 unsigned long min_uV;
121 unsigned long max_uV;
122 };
123
124 struct regulator;
125
126 /**
127 * struct regulator_bulk_data - Data used for bulk regulator operations.
128 *
129 * @supply: The name of the supply. Initialised by the user before
130 * using the bulk regulator APIs.
131 * @consumer: The regulator consumer for the supply. This will be managed
132 * by the bulk API.
133 * @init_load_uA: After getting the regulator, regulator_set_load() will be
134 * called with this load. Initialised by the user before
135 * using the bulk regulator APIs.
136 *
137 * The regulator APIs provide a series of regulator_bulk_() API calls as
138 * a convenience to consumers which require multiple supplies. This
139 * structure is used to manage data for these calls.
140 */
141 struct regulator_bulk_data {
142 const char *supply;
143 struct regulator *consumer;
144 int init_load_uA;
145
146 /* private: Internal use */
147 int ret;
148 };
149
150 #if defined(CONFIG_REGULATOR)
151
152 /* regulator get and put */
153 struct regulator *__must_check regulator_get(struct device *dev,
154 const char *id);
155 struct regulator *__must_check devm_regulator_get(struct device *dev,
156 const char *id);
157 struct regulator *__must_check regulator_get_exclusive(struct device *dev,
158 const char *id);
159 struct regulator *__must_check devm_regulator_get_exclusive(struct device *dev,
160 const char *id);
161 struct regulator *__must_check regulator_get_optional(struct device *dev,
162 const char *id);
163 struct regulator *__must_check devm_regulator_get_optional(struct device *dev,
164 const char *id);
165 int devm_regulator_get_enable(struct device *dev, const char *id);
166 int devm_regulator_get_enable_optional(struct device *dev, const char *id);
167 int devm_regulator_get_enable_read_voltage(struct device *dev, const char *id);
168 void regulator_put(struct regulator *regulator);
169 void devm_regulator_put(struct regulator *regulator);
170
171 int regulator_register_supply_alias(struct device *dev, const char *id,
172 struct device *alias_dev,
173 const char *alias_id);
174 void regulator_unregister_supply_alias(struct device *dev, const char *id);
175
176 int regulator_bulk_register_supply_alias(struct device *dev,
177 const char *const *id,
178 struct device *alias_dev,
179 const char *const *alias_id,
180 int num_id);
181 void regulator_bulk_unregister_supply_alias(struct device *dev,
182 const char * const *id, int num_id);
183
184 int devm_regulator_register_supply_alias(struct device *dev, const char *id,
185 struct device *alias_dev,
186 const char *alias_id);
187
188 int devm_regulator_bulk_register_supply_alias(struct device *dev,
189 const char *const *id,
190 struct device *alias_dev,
191 const char *const *alias_id,
192 int num_id);
193
194 /* regulator output control and status */
195 int __must_check regulator_enable(struct regulator *regulator);
196 int regulator_disable(struct regulator *regulator);
197 int regulator_force_disable(struct regulator *regulator);
198 int regulator_is_enabled(struct regulator *regulator);
199 int regulator_disable_deferred(struct regulator *regulator, int ms);
200
201 int __must_check regulator_bulk_get(struct device *dev, int num_consumers,
202 struct regulator_bulk_data *consumers);
203 int __must_check devm_regulator_bulk_get(struct device *dev, int num_consumers,
204 struct regulator_bulk_data *consumers);
205 void devm_regulator_bulk_put(struct regulator_bulk_data *consumers);
206 int __must_check devm_regulator_bulk_get_exclusive(struct device *dev, int num_consumers,
207 struct regulator_bulk_data *consumers);
208 int __must_check devm_regulator_bulk_get_const(
209 struct device *dev, int num_consumers,
210 const struct regulator_bulk_data *in_consumers,
211 struct regulator_bulk_data **out_consumers);
212 int __must_check regulator_bulk_enable(int num_consumers,
213 struct regulator_bulk_data *consumers);
214 int devm_regulator_bulk_get_enable(struct device *dev, int num_consumers,
215 const char * const *id);
216 int regulator_bulk_disable(int num_consumers,
217 struct regulator_bulk_data *consumers);
218 int regulator_bulk_force_disable(int num_consumers,
219 struct regulator_bulk_data *consumers);
220 void regulator_bulk_free(int num_consumers,
221 struct regulator_bulk_data *consumers);
222
223 int regulator_count_voltages(struct regulator *regulator);
224 int regulator_list_voltage(struct regulator *regulator, unsigned selector);
225 int regulator_is_supported_voltage(struct regulator *regulator,
226 int min_uV, int max_uV);
227 unsigned int regulator_get_linear_step(struct regulator *regulator);
228 int regulator_set_voltage(struct regulator *regulator, int min_uV, int max_uV);
229 int regulator_set_voltage_time(struct regulator *regulator,
230 int old_uV, int new_uV);
231 int regulator_get_voltage(struct regulator *regulator);
232 int regulator_sync_voltage(struct regulator *regulator);
233 int regulator_set_current_limit(struct regulator *regulator,
234 int min_uA, int max_uA);
235 int regulator_get_current_limit(struct regulator *regulator);
236 int regulator_get_unclaimed_power_budget(struct regulator *regulator);
237 int regulator_request_power_budget(struct regulator *regulator,
238 unsigned int pw_req);
239 void regulator_free_power_budget(struct regulator *regulator,
240 unsigned int pw);
241
242 int regulator_set_mode(struct regulator *regulator, unsigned int mode);
243 unsigned int regulator_get_mode(struct regulator *regulator);
244 int regulator_get_error_flags(struct regulator *regulator,
245 unsigned int *flags);
246 int regulator_set_load(struct regulator *regulator, int load_uA);
247
248 int regulator_allow_bypass(struct regulator *regulator, bool allow);
249
250 struct regmap *regulator_get_regmap(struct regulator *regulator);
251 int regulator_get_hardware_vsel_register(struct regulator *regulator,
252 unsigned *vsel_reg,
253 unsigned *vsel_mask);
254 int regulator_list_hardware_vsel(struct regulator *regulator,
255 unsigned selector);
256 int regulator_hardware_enable(struct regulator *regulator, bool enable);
257
258 /* regulator notifier block */
259 int regulator_register_notifier(struct regulator *regulator,
260 struct notifier_block *nb);
261 int devm_regulator_register_notifier(struct regulator *regulator,
262 struct notifier_block *nb);
263 int regulator_unregister_notifier(struct regulator *regulator,
264 struct notifier_block *nb);
265 void devm_regulator_unregister_notifier(struct regulator *regulator,
266 struct notifier_block *nb);
267
268 /* regulator suspend */
269 int regulator_suspend_enable(struct regulator_dev *rdev,
270 suspend_state_t state);
271 int regulator_suspend_disable(struct regulator_dev *rdev,
272 suspend_state_t state);
273 int regulator_set_suspend_voltage(struct regulator *regulator, int min_uV,
274 int max_uV, suspend_state_t state);
275
276 /* driver data - core doesn't touch */
277 void *regulator_get_drvdata(struct regulator *regulator);
278 void regulator_set_drvdata(struct regulator *regulator, void *data);
279
280 /* misc helpers */
281
282 void regulator_bulk_set_supply_names(struct regulator_bulk_data *consumers,
283 const char *const *supply_names,
284 unsigned int num_supplies);
285
286 bool regulator_is_equal(struct regulator *reg1, struct regulator *reg2);
287
288 #else
289
290 /*
291 * Make sure client drivers will still build on systems with no software
292 * controllable voltage or current regulators.
293 */
regulator_get(struct device * dev,const char * id)294 static inline struct regulator *__must_check regulator_get(struct device *dev,
295 const char *id)
296 {
297 /* Nothing except the stubbed out regulator API should be
298 * looking at the value except to check if it is an error
299 * value. Drivers are free to handle NULL specifically by
300 * skipping all regulator API calls, but they don't have to.
301 * Drivers which don't, should make sure they properly handle
302 * corner cases of the API, such as regulator_get_voltage()
303 * returning 0.
304 */
305 return NULL;
306 }
307
308 static inline struct regulator *__must_check
devm_regulator_get(struct device * dev,const char * id)309 devm_regulator_get(struct device *dev, const char *id)
310 {
311 return NULL;
312 }
313
314 static inline struct regulator *__must_check
regulator_get_exclusive(struct device * dev,const char * id)315 regulator_get_exclusive(struct device *dev, const char *id)
316 {
317 return ERR_PTR(-ENODEV);
318 }
319
320 static inline struct regulator *__must_check
devm_regulator_get_exclusive(struct device * dev,const char * id)321 devm_regulator_get_exclusive(struct device *dev, const char *id)
322 {
323 return ERR_PTR(-ENODEV);
324 }
325
devm_regulator_get_enable(struct device * dev,const char * id)326 static inline int devm_regulator_get_enable(struct device *dev, const char *id)
327 {
328 return 0;
329 }
330
devm_regulator_get_enable_optional(struct device * dev,const char * id)331 static inline int devm_regulator_get_enable_optional(struct device *dev,
332 const char *id)
333 {
334 return 0;
335 }
336
devm_regulator_get_enable_read_voltage(struct device * dev,const char * id)337 static inline int devm_regulator_get_enable_read_voltage(struct device *dev,
338 const char *id)
339 {
340 return -ENODEV;
341 }
342
343 static inline struct regulator *__must_check
regulator_get_optional(struct device * dev,const char * id)344 regulator_get_optional(struct device *dev, const char *id)
345 {
346 return ERR_PTR(-ENODEV);
347 }
348
349
350 static inline struct regulator *__must_check
devm_regulator_get_optional(struct device * dev,const char * id)351 devm_regulator_get_optional(struct device *dev, const char *id)
352 {
353 return ERR_PTR(-ENODEV);
354 }
355
regulator_put(struct regulator * regulator)356 static inline void regulator_put(struct regulator *regulator)
357 {
358 }
359
devm_regulator_put(struct regulator * regulator)360 static inline void devm_regulator_put(struct regulator *regulator)
361 {
362 }
363
devm_regulator_bulk_put(struct regulator_bulk_data * consumers)364 static inline void devm_regulator_bulk_put(struct regulator_bulk_data *consumers)
365 {
366 }
367
regulator_register_supply_alias(struct device * dev,const char * id,struct device * alias_dev,const char * alias_id)368 static inline int regulator_register_supply_alias(struct device *dev,
369 const char *id,
370 struct device *alias_dev,
371 const char *alias_id)
372 {
373 return 0;
374 }
375
regulator_unregister_supply_alias(struct device * dev,const char * id)376 static inline void regulator_unregister_supply_alias(struct device *dev,
377 const char *id)
378 {
379 }
380
regulator_bulk_register_supply_alias(struct device * dev,const char * const * id,struct device * alias_dev,const char * const * alias_id,int num_id)381 static inline int regulator_bulk_register_supply_alias(struct device *dev,
382 const char *const *id,
383 struct device *alias_dev,
384 const char * const *alias_id,
385 int num_id)
386 {
387 return 0;
388 }
389
regulator_bulk_unregister_supply_alias(struct device * dev,const char * const * id,int num_id)390 static inline void regulator_bulk_unregister_supply_alias(struct device *dev,
391 const char * const *id,
392 int num_id)
393 {
394 }
395
devm_regulator_register_supply_alias(struct device * dev,const char * id,struct device * alias_dev,const char * alias_id)396 static inline int devm_regulator_register_supply_alias(struct device *dev,
397 const char *id,
398 struct device *alias_dev,
399 const char *alias_id)
400 {
401 return 0;
402 }
403
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)404 static inline int devm_regulator_bulk_register_supply_alias(struct device *dev,
405 const char *const *id,
406 struct device *alias_dev,
407 const char *const *alias_id,
408 int num_id)
409 {
410 return 0;
411 }
412
regulator_enable(struct regulator * regulator)413 static inline int regulator_enable(struct regulator *regulator)
414 {
415 return 0;
416 }
417
regulator_disable(struct regulator * regulator)418 static inline int regulator_disable(struct regulator *regulator)
419 {
420 return 0;
421 }
422
regulator_force_disable(struct regulator * regulator)423 static inline int regulator_force_disable(struct regulator *regulator)
424 {
425 return 0;
426 }
427
regulator_disable_deferred(struct regulator * regulator,int ms)428 static inline int regulator_disable_deferred(struct regulator *regulator,
429 int ms)
430 {
431 return 0;
432 }
433
regulator_is_enabled(struct regulator * regulator)434 static inline int regulator_is_enabled(struct regulator *regulator)
435 {
436 return 1;
437 }
438
regulator_bulk_get(struct device * dev,int num_consumers,struct regulator_bulk_data * consumers)439 static inline int regulator_bulk_get(struct device *dev,
440 int num_consumers,
441 struct regulator_bulk_data *consumers)
442 {
443 return 0;
444 }
445
devm_regulator_bulk_get(struct device * dev,int num_consumers,struct regulator_bulk_data * consumers)446 static inline int devm_regulator_bulk_get(struct device *dev, int num_consumers,
447 struct regulator_bulk_data *consumers)
448 {
449 return 0;
450 }
451
devm_regulator_bulk_get_const(struct device * dev,int num_consumers,const struct regulator_bulk_data * in_consumers,struct regulator_bulk_data ** out_consumers)452 static inline int devm_regulator_bulk_get_const(
453 struct device *dev, int num_consumers,
454 const struct regulator_bulk_data *in_consumers,
455 struct regulator_bulk_data **out_consumers)
456 {
457 return 0;
458 }
459
regulator_bulk_enable(int num_consumers,struct regulator_bulk_data * consumers)460 static inline int regulator_bulk_enable(int num_consumers,
461 struct regulator_bulk_data *consumers)
462 {
463 return 0;
464 }
465
devm_regulator_bulk_get_enable(struct device * dev,int num_consumers,const char * const * id)466 static inline int devm_regulator_bulk_get_enable(struct device *dev,
467 int num_consumers,
468 const char * const *id)
469 {
470 return 0;
471 }
472
regulator_bulk_disable(int num_consumers,struct regulator_bulk_data * consumers)473 static inline int regulator_bulk_disable(int num_consumers,
474 struct regulator_bulk_data *consumers)
475 {
476 return 0;
477 }
478
regulator_bulk_force_disable(int num_consumers,struct regulator_bulk_data * consumers)479 static inline int regulator_bulk_force_disable(int num_consumers,
480 struct regulator_bulk_data *consumers)
481 {
482 return 0;
483 }
484
regulator_bulk_free(int num_consumers,struct regulator_bulk_data * consumers)485 static inline void regulator_bulk_free(int num_consumers,
486 struct regulator_bulk_data *consumers)
487 {
488 }
489
regulator_set_voltage(struct regulator * regulator,int min_uV,int max_uV)490 static inline int regulator_set_voltage(struct regulator *regulator,
491 int min_uV, int max_uV)
492 {
493 return 0;
494 }
495
regulator_set_voltage_time(struct regulator * regulator,int old_uV,int new_uV)496 static inline int regulator_set_voltage_time(struct regulator *regulator,
497 int old_uV, int new_uV)
498 {
499 return 0;
500 }
501
regulator_get_voltage(struct regulator * regulator)502 static inline int regulator_get_voltage(struct regulator *regulator)
503 {
504 return -EINVAL;
505 }
506
regulator_sync_voltage(struct regulator * regulator)507 static inline int regulator_sync_voltage(struct regulator *regulator)
508 {
509 return -EINVAL;
510 }
511
regulator_is_supported_voltage(struct regulator * regulator,int min_uV,int max_uV)512 static inline int regulator_is_supported_voltage(struct regulator *regulator,
513 int min_uV, int max_uV)
514 {
515 return 0;
516 }
517
regulator_get_linear_step(struct regulator * regulator)518 static inline unsigned int regulator_get_linear_step(struct regulator *regulator)
519 {
520 return 0;
521 }
522
regulator_set_current_limit(struct regulator * regulator,int min_uA,int max_uA)523 static inline int regulator_set_current_limit(struct regulator *regulator,
524 int min_uA, int max_uA)
525 {
526 return 0;
527 }
528
regulator_get_current_limit(struct regulator * regulator)529 static inline int regulator_get_current_limit(struct regulator *regulator)
530 {
531 return 0;
532 }
533
regulator_get_unclaimed_power_budget(struct regulator * regulator)534 static inline int regulator_get_unclaimed_power_budget(struct regulator *regulator)
535 {
536 return INT_MAX;
537 }
538
regulator_request_power_budget(struct regulator * regulator,unsigned int pw_req)539 static inline int regulator_request_power_budget(struct regulator *regulator,
540 unsigned int pw_req)
541 {
542 return -EOPNOTSUPP;
543 }
544
regulator_free_power_budget(struct regulator * regulator,unsigned int pw)545 static inline void regulator_free_power_budget(struct regulator *regulator,
546 unsigned int pw)
547 {
548 }
549
regulator_set_mode(struct regulator * regulator,unsigned int mode)550 static inline int regulator_set_mode(struct regulator *regulator,
551 unsigned int mode)
552 {
553 return 0;
554 }
555
regulator_get_mode(struct regulator * regulator)556 static inline unsigned int regulator_get_mode(struct regulator *regulator)
557 {
558 return REGULATOR_MODE_NORMAL;
559 }
560
regulator_get_error_flags(struct regulator * regulator,unsigned int * flags)561 static inline int regulator_get_error_flags(struct regulator *regulator,
562 unsigned int *flags)
563 {
564 return -EINVAL;
565 }
566
regulator_set_load(struct regulator * regulator,int load_uA)567 static inline int regulator_set_load(struct regulator *regulator, int load_uA)
568 {
569 return 0;
570 }
571
regulator_allow_bypass(struct regulator * regulator,bool allow)572 static inline int regulator_allow_bypass(struct regulator *regulator,
573 bool allow)
574 {
575 return 0;
576 }
577
regulator_get_regmap(struct regulator * regulator)578 static inline struct regmap *regulator_get_regmap(struct regulator *regulator)
579 {
580 return ERR_PTR(-EOPNOTSUPP);
581 }
582
regulator_get_hardware_vsel_register(struct regulator * regulator,unsigned * vsel_reg,unsigned * vsel_mask)583 static inline int regulator_get_hardware_vsel_register(struct regulator *regulator,
584 unsigned *vsel_reg,
585 unsigned *vsel_mask)
586 {
587 return -EOPNOTSUPP;
588 }
589
regulator_list_hardware_vsel(struct regulator * regulator,unsigned selector)590 static inline int regulator_list_hardware_vsel(struct regulator *regulator,
591 unsigned selector)
592 {
593 return -EOPNOTSUPP;
594 }
595
regulator_hardware_enable(struct regulator * regulator,bool enable)596 static inline int regulator_hardware_enable(struct regulator *regulator,
597 bool enable)
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
679 #if IS_ENABLED(CONFIG_OF) && IS_ENABLED(CONFIG_REGULATOR)
680 struct regulator *__must_check of_regulator_get_optional(struct device *dev,
681 struct device_node *node,
682 const char *id);
683 struct regulator *__must_check devm_of_regulator_get_optional(struct device *dev,
684 struct device_node *node,
685 const char *id);
686 int __must_check of_regulator_bulk_get_all(struct device *dev, struct device_node *np,
687 struct regulator_bulk_data **consumers);
688 #else
of_regulator_get_optional(struct device * dev,struct device_node * node,const char * id)689 static inline struct regulator *__must_check of_regulator_get_optional(struct device *dev,
690 struct device_node *node,
691 const char *id)
692 {
693 return ERR_PTR(-ENODEV);
694 }
695
devm_of_regulator_get_optional(struct device * dev,struct device_node * node,const char * id)696 static inline struct regulator *__must_check devm_of_regulator_get_optional(struct device *dev,
697 struct device_node *node,
698 const char *id)
699 {
700 return ERR_PTR(-ENODEV);
701 }
702
of_regulator_bulk_get_all(struct device * dev,struct device_node * np,struct regulator_bulk_data ** consumers)703 static inline int of_regulator_bulk_get_all(struct device *dev, struct device_node *np,
704 struct regulator_bulk_data **consumers)
705 {
706 return 0;
707 }
708
709 #endif
710
regulator_set_voltage_triplet(struct regulator * regulator,int min_uV,int target_uV,int max_uV)711 static inline int regulator_set_voltage_triplet(struct regulator *regulator,
712 int min_uV, int target_uV,
713 int max_uV)
714 {
715 if (regulator_set_voltage(regulator, target_uV, max_uV) == 0)
716 return 0;
717
718 return regulator_set_voltage(regulator, min_uV, max_uV);
719 }
720
regulator_set_voltage_tol(struct regulator * regulator,int new_uV,int tol_uV)721 static inline int regulator_set_voltage_tol(struct regulator *regulator,
722 int new_uV, int tol_uV)
723 {
724 if (regulator_set_voltage(regulator, new_uV, new_uV + tol_uV) == 0)
725 return 0;
726 else
727 return regulator_set_voltage(regulator,
728 new_uV - tol_uV, new_uV + tol_uV);
729 }
730
regulator_is_supported_voltage_tol(struct regulator * regulator,int target_uV,int tol_uV)731 static inline int regulator_is_supported_voltage_tol(struct regulator *regulator,
732 int target_uV, int tol_uV)
733 {
734 return regulator_is_supported_voltage(regulator,
735 target_uV - tol_uV,
736 target_uV + tol_uV);
737 }
738
739 #endif
740