Commit | Line | Data |
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e2ce4eaa LG |
1 | /* |
2 | * consumer.h -- SoC Regulator consumer support. | |
3 | * | |
4 | * Copyright (C) 2007, 2008 Wolfson Microelectronics PLC. | |
5 | * | |
1dd68f01 | 6 | * Author: Liam Girdwood <lrg@slimlogic.co.uk> |
e2ce4eaa LG |
7 | * |
8 | * This program is free software; you can redistribute it and/or modify | |
9 | * it under the terms of the GNU General Public License version 2 as | |
10 | * published by the Free Software Foundation. | |
11 | * | |
12 | * Regulator Consumer Interface. | |
13 | * | |
14 | * A Power Management Regulator framework for SoC based devices. | |
15 | * Features:- | |
16 | * o Voltage and current level control. | |
17 | * o Operating mode control. | |
18 | * o Regulator status. | |
19 | * o sysfs entries for showing client devices and status | |
20 | * | |
21 | * EXPERIMENTAL FEATURES: | |
22 | * Dynamic Regulator operating Mode Switching (DRMS) - allows regulators | |
23 | * to use most efficient operating mode depending upon voltage and load and | |
24 | * is transparent to client drivers. | |
25 | * | |
26 | * e.g. Devices x,y,z share regulator r. Device x and y draw 20mA each during | |
27 | * IO and 1mA at idle. Device z draws 100mA when under load and 5mA when | |
28 | * idling. Regulator r has > 90% efficiency in NORMAL mode at loads > 100mA | |
29 | * but this drops rapidly to 60% when below 100mA. Regulator r has > 90% | |
30 | * efficiency in IDLE mode at loads < 10mA. Thus regulator r will operate | |
31 | * in normal mode for loads > 10mA and in IDLE mode for load <= 10mA. | |
32 | * | |
33 | */ | |
34 | ||
35 | #ifndef __LINUX_REGULATOR_CONSUMER_H_ | |
36 | #define __LINUX_REGULATOR_CONSUMER_H_ | |
37 | ||
174e964e GR |
38 | #include <linux/err.h> |
39 | ||
313162d0 PG |
40 | struct device; |
41 | struct notifier_block; | |
04eca28c | 42 | struct regmap; |
b56daf13 | 43 | |
e2ce4eaa LG |
44 | /* |
45 | * Regulator operating modes. | |
46 | * | |
47 | * Regulators can run in a variety of different operating modes depending on | |
48 | * output load. This allows further system power savings by selecting the | |
49 | * best (and most efficient) regulator mode for a desired load. | |
50 | * | |
51 | * Most drivers will only care about NORMAL. The modes below are generic and | |
52 | * will probably not match the naming convention of your regulator data sheet | |
53 | * but should match the use cases in the datasheet. | |
54 | * | |
55 | * In order of power efficiency (least efficient at top). | |
56 | * | |
57 | * Mode Description | |
58 | * FAST Regulator can handle fast changes in it's load. | |
59 | * e.g. useful in CPU voltage & frequency scaling where | |
60 | * load can quickly increase with CPU frequency increases. | |
61 | * | |
62 | * NORMAL Normal regulator power supply mode. Most drivers will | |
63 | * use this mode. | |
64 | * | |
65 | * IDLE Regulator runs in a more efficient mode for light | |
66 | * loads. Can be used for devices that have a low power | |
67 | * requirement during periods of inactivity. This mode | |
68 | * may be more noisy than NORMAL and may not be able | |
69 | * to handle fast load switching. | |
70 | * | |
71 | * STANDBY Regulator runs in the most efficient mode for very | |
72 | * light loads. Can be used by devices when they are | |
73 | * in a sleep/standby state. This mode is likely to be | |
74 | * the most noisy and may not be able to handle fast load | |
75 | * switching. | |
76 | * | |
77 | * NOTE: Most regulators will only support a subset of these modes. Some | |
78 | * will only just support NORMAL. | |
79 | * | |
80 | * These modes can be OR'ed together to make up a mask of valid register modes. | |
81 | */ | |
82 | ||
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 notifier events. | |
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. | |
84b68263 | 96 | * FORCE_DISABLE Regulator forcibly shut down by software. |
b136fb44 | 97 | * VOLTAGE_CHANGE Regulator voltage changed. |
7179569a | 98 | * Data passed is old voltage cast to (void *). |
84b68263 | 99 | * DISABLE Regulator was disabled. |
7179569a HS |
100 | * PRE_VOLTAGE_CHANGE Regulator is about to have voltage changed. |
101 | * Data passed is "struct pre_voltage_change_data" | |
102 | * ABORT_VOLTAGE_CHANGE Regulator voltage change failed for some reason. | |
103 | * Data passed is old voltage cast to (void *). | |
a1c8a551 RF |
104 | * PRE_DISABLE Regulator is about to be disabled |
105 | * ABORT_DISABLE Regulator disable failed for some reason | |
e2ce4eaa LG |
106 | * |
107 | * NOTE: These events can be OR'ed together when passed into handler. | |
108 | */ | |
109 | ||
110 | #define REGULATOR_EVENT_UNDER_VOLTAGE 0x01 | |
111 | #define REGULATOR_EVENT_OVER_CURRENT 0x02 | |
112 | #define REGULATOR_EVENT_REGULATION_OUT 0x04 | |
113 | #define REGULATOR_EVENT_FAIL 0x08 | |
114 | #define REGULATOR_EVENT_OVER_TEMP 0x10 | |
115 | #define REGULATOR_EVENT_FORCE_DISABLE 0x20 | |
b136fb44 | 116 | #define REGULATOR_EVENT_VOLTAGE_CHANGE 0x40 |
84b68263 | 117 | #define REGULATOR_EVENT_DISABLE 0x80 |
7179569a HS |
118 | #define REGULATOR_EVENT_PRE_VOLTAGE_CHANGE 0x100 |
119 | #define REGULATOR_EVENT_ABORT_VOLTAGE_CHANGE 0x200 | |
a1c8a551 RF |
120 | #define REGULATOR_EVENT_PRE_DISABLE 0x400 |
121 | #define REGULATOR_EVENT_ABORT_DISABLE 0x800 | |
7179569a HS |
122 | |
123 | /** | |
124 | * struct pre_voltage_change_data - Data sent with PRE_VOLTAGE_CHANGE event | |
125 | * | |
126 | * @old_uV: Current voltage before change. | |
127 | * @min_uV: Min voltage we'll change to. | |
128 | * @max_uV: Max voltage we'll change to. | |
129 | */ | |
130 | struct pre_voltage_change_data { | |
131 | unsigned long old_uV; | |
132 | unsigned long min_uV; | |
133 | unsigned long max_uV; | |
134 | }; | |
e2ce4eaa LG |
135 | |
136 | struct regulator; | |
137 | ||
138 | /** | |
139 | * struct regulator_bulk_data - Data used for bulk regulator operations. | |
140 | * | |
69279fb9 MB |
141 | * @supply: The name of the supply. Initialised by the user before |
142 | * using the bulk regulator APIs. | |
143 | * @consumer: The regulator consumer for the supply. This will be managed | |
144 | * by the bulk API. | |
e2ce4eaa LG |
145 | * |
146 | * The regulator APIs provide a series of regulator_bulk_() API calls as | |
147 | * a convenience to consumers which require multiple supplies. This | |
148 | * structure is used to manage data for these calls. | |
149 | */ | |
150 | struct regulator_bulk_data { | |
151 | const char *supply; | |
152 | struct regulator *consumer; | |
f21e0e81 | 153 | |
bff747c5 | 154 | /* private: Internal use */ |
f21e0e81 | 155 | int ret; |
e2ce4eaa LG |
156 | }; |
157 | ||
158 | #if defined(CONFIG_REGULATOR) | |
159 | ||
160 | /* regulator get and put */ | |
161 | struct regulator *__must_check regulator_get(struct device *dev, | |
162 | const char *id); | |
070b9079 SB |
163 | struct regulator *__must_check devm_regulator_get(struct device *dev, |
164 | const char *id); | |
5ffbd136 MB |
165 | struct regulator *__must_check regulator_get_exclusive(struct device *dev, |
166 | const char *id); | |
9efdd276 MK |
167 | struct regulator *__must_check devm_regulator_get_exclusive(struct device *dev, |
168 | const char *id); | |
de1dd9fd MB |
169 | struct regulator *__must_check regulator_get_optional(struct device *dev, |
170 | const char *id); | |
171 | struct regulator *__must_check devm_regulator_get_optional(struct device *dev, | |
172 | const char *id); | |
e2ce4eaa | 173 | void regulator_put(struct regulator *regulator); |
2950c4bb | 174 | void devm_regulator_put(struct regulator *regulator); |
e2ce4eaa | 175 | |
a06ccd9c CK |
176 | int regulator_register_supply_alias(struct device *dev, const char *id, |
177 | struct device *alias_dev, | |
178 | const char *alias_id); | |
179 | void regulator_unregister_supply_alias(struct device *dev, const char *id); | |
180 | ||
9f8c0fe9 LJ |
181 | int regulator_bulk_register_supply_alias(struct device *dev, |
182 | const char *const *id, | |
a06ccd9c | 183 | struct device *alias_dev, |
9f8c0fe9 LJ |
184 | const char *const *alias_id, |
185 | int num_id); | |
a06ccd9c | 186 | void regulator_bulk_unregister_supply_alias(struct device *dev, |
9f8c0fe9 | 187 | const char * const *id, int num_id); |
a06ccd9c CK |
188 | |
189 | int devm_regulator_register_supply_alias(struct device *dev, const char *id, | |
190 | struct device *alias_dev, | |
191 | const char *alias_id); | |
192 | void devm_regulator_unregister_supply_alias(struct device *dev, | |
193 | const char *id); | |
194 | ||
195 | int devm_regulator_bulk_register_supply_alias(struct device *dev, | |
9f8c0fe9 | 196 | const char *const *id, |
a06ccd9c | 197 | struct device *alias_dev, |
9f8c0fe9 | 198 | const char *const *alias_id, |
a06ccd9c CK |
199 | int num_id); |
200 | void devm_regulator_bulk_unregister_supply_alias(struct device *dev, | |
9f8c0fe9 | 201 | const char *const *id, |
a06ccd9c CK |
202 | int num_id); |
203 | ||
e2ce4eaa | 204 | /* regulator output control and status */ |
c8801a8e | 205 | int __must_check regulator_enable(struct regulator *regulator); |
e2ce4eaa LG |
206 | int regulator_disable(struct regulator *regulator); |
207 | int regulator_force_disable(struct regulator *regulator); | |
208 | int regulator_is_enabled(struct regulator *regulator); | |
da07ecd9 | 209 | int regulator_disable_deferred(struct regulator *regulator, int ms); |
e2ce4eaa | 210 | |
c8801a8e MB |
211 | int __must_check regulator_bulk_get(struct device *dev, int num_consumers, |
212 | struct regulator_bulk_data *consumers); | |
213 | int __must_check devm_regulator_bulk_get(struct device *dev, int num_consumers, | |
214 | struct regulator_bulk_data *consumers); | |
215 | int __must_check regulator_bulk_enable(int num_consumers, | |
216 | struct regulator_bulk_data *consumers); | |
e2ce4eaa LG |
217 | int regulator_bulk_disable(int num_consumers, |
218 | struct regulator_bulk_data *consumers); | |
e1de2f42 DK |
219 | int regulator_bulk_force_disable(int num_consumers, |
220 | struct regulator_bulk_data *consumers); | |
e2ce4eaa LG |
221 | void regulator_bulk_free(int num_consumers, |
222 | struct regulator_bulk_data *consumers); | |
223 | ||
d1e7de30 | 224 | int regulator_can_change_voltage(struct regulator *regulator); |
4367cfdc DB |
225 | int regulator_count_voltages(struct regulator *regulator); |
226 | int regulator_list_voltage(struct regulator *regulator, unsigned selector); | |
a7a1ad90 MB |
227 | int regulator_is_supported_voltage(struct regulator *regulator, |
228 | int min_uV, int max_uV); | |
2a668a8b | 229 | unsigned int regulator_get_linear_step(struct regulator *regulator); |
e2ce4eaa | 230 | int regulator_set_voltage(struct regulator *regulator, int min_uV, int max_uV); |
88cd222b LW |
231 | int regulator_set_voltage_time(struct regulator *regulator, |
232 | int old_uV, int new_uV); | |
e2ce4eaa | 233 | int regulator_get_voltage(struct regulator *regulator); |
606a2562 | 234 | int regulator_sync_voltage(struct regulator *regulator); |
e2ce4eaa LG |
235 | int regulator_set_current_limit(struct regulator *regulator, |
236 | int min_uA, int max_uA); | |
237 | int regulator_get_current_limit(struct regulator *regulator); | |
238 | ||
239 | int regulator_set_mode(struct regulator *regulator, unsigned int mode); | |
240 | unsigned int regulator_get_mode(struct regulator *regulator); | |
241 | int regulator_set_optimum_mode(struct regulator *regulator, int load_uA); | |
242 | ||
f59c8f9f MB |
243 | int regulator_allow_bypass(struct regulator *regulator, bool allow); |
244 | ||
04eca28c TT |
245 | struct regmap *regulator_get_regmap(struct regulator *regulator); |
246 | int regulator_get_hardware_vsel_register(struct regulator *regulator, | |
247 | unsigned *vsel_reg, | |
248 | unsigned *vsel_mask); | |
249 | int regulator_list_hardware_vsel(struct regulator *regulator, | |
250 | unsigned selector); | |
251 | ||
e2ce4eaa LG |
252 | /* regulator notifier block */ |
253 | int regulator_register_notifier(struct regulator *regulator, | |
254 | struct notifier_block *nb); | |
255 | int regulator_unregister_notifier(struct regulator *regulator, | |
256 | struct notifier_block *nb); | |
257 | ||
258 | /* driver data - core doesn't touch */ | |
259 | void *regulator_get_drvdata(struct regulator *regulator); | |
260 | void regulator_set_drvdata(struct regulator *regulator, void *data); | |
261 | ||
262 | #else | |
263 | ||
264 | /* | |
265 | * Make sure client drivers will still build on systems with no software | |
266 | * controllable voltage or current regulators. | |
267 | */ | |
268 | static inline struct regulator *__must_check regulator_get(struct device *dev, | |
269 | const char *id) | |
270 | { | |
271 | /* Nothing except the stubbed out regulator API should be | |
272 | * looking at the value except to check if it is an error | |
be1a50d4 JD |
273 | * value. Drivers are free to handle NULL specifically by |
274 | * skipping all regulator API calls, but they don't have to. | |
275 | * Drivers which don't, should make sure they properly handle | |
276 | * corner cases of the API, such as regulator_get_voltage() | |
277 | * returning 0. | |
e2ce4eaa | 278 | */ |
be1a50d4 | 279 | return NULL; |
e2ce4eaa | 280 | } |
070b9079 SB |
281 | |
282 | static inline struct regulator *__must_check | |
283 | devm_regulator_get(struct device *dev, const char *id) | |
284 | { | |
285 | return NULL; | |
286 | } | |
287 | ||
4bdfb272 MB |
288 | static inline struct regulator *__must_check |
289 | regulator_get_exclusive(struct device *dev, const char *id) | |
290 | { | |
70b946f9 | 291 | return ERR_PTR(-ENODEV); |
4bdfb272 MB |
292 | } |
293 | ||
de1dd9fd MB |
294 | static inline struct regulator *__must_check |
295 | regulator_get_optional(struct device *dev, const char *id) | |
296 | { | |
df7926ff | 297 | return ERR_PTR(-ENODEV); |
de1dd9fd MB |
298 | } |
299 | ||
4bdfb272 | 300 | |
070b9079 | 301 | static inline struct regulator *__must_check |
de1dd9fd | 302 | devm_regulator_get_optional(struct device *dev, const char *id) |
070b9079 | 303 | { |
df7926ff | 304 | return ERR_PTR(-ENODEV); |
070b9079 SB |
305 | } |
306 | ||
e2ce4eaa LG |
307 | static inline void regulator_put(struct regulator *regulator) |
308 | { | |
309 | } | |
310 | ||
2950c4bb AL |
311 | static inline void devm_regulator_put(struct regulator *regulator) |
312 | { | |
313 | } | |
314 | ||
a06ccd9c CK |
315 | static inline int regulator_register_supply_alias(struct device *dev, |
316 | const char *id, | |
317 | struct device *alias_dev, | |
318 | const char *alias_id) | |
319 | { | |
320 | return 0; | |
321 | } | |
322 | ||
323 | static inline void regulator_unregister_supply_alias(struct device *dev, | |
324 | const char *id) | |
325 | { | |
326 | } | |
327 | ||
328 | static inline int regulator_bulk_register_supply_alias(struct device *dev, | |
9f8c0fe9 LJ |
329 | const char *const *id, |
330 | struct device *alias_dev, | |
331 | const char * const *alias_id, | |
332 | int num_id) | |
a06ccd9c CK |
333 | { |
334 | return 0; | |
335 | } | |
336 | ||
337 | static inline void regulator_bulk_unregister_supply_alias(struct device *dev, | |
9f8c0fe9 LJ |
338 | const char * const *id, |
339 | int num_id) | |
a06ccd9c CK |
340 | { |
341 | } | |
342 | ||
343 | static inline int devm_regulator_register_supply_alias(struct device *dev, | |
344 | const char *id, | |
345 | struct device *alias_dev, | |
346 | const char *alias_id) | |
347 | { | |
348 | return 0; | |
349 | } | |
350 | ||
351 | static inline void devm_regulator_unregister_supply_alias(struct device *dev, | |
352 | const char *id) | |
353 | { | |
354 | } | |
355 | ||
9f8c0fe9 LJ |
356 | static inline int devm_regulator_bulk_register_supply_alias(struct device *dev, |
357 | const char *const *id, | |
358 | struct device *alias_dev, | |
359 | const char *const *alias_id, | |
360 | int num_id) | |
a06ccd9c CK |
361 | { |
362 | return 0; | |
363 | } | |
364 | ||
365 | static inline void devm_regulator_bulk_unregister_supply_alias( | |
9f8c0fe9 | 366 | struct device *dev, const char *const *id, int num_id) |
a06ccd9c CK |
367 | { |
368 | } | |
369 | ||
e2ce4eaa LG |
370 | static inline int regulator_enable(struct regulator *regulator) |
371 | { | |
372 | return 0; | |
373 | } | |
374 | ||
375 | static inline int regulator_disable(struct regulator *regulator) | |
376 | { | |
377 | return 0; | |
378 | } | |
379 | ||
935a5210 MH |
380 | static inline int regulator_force_disable(struct regulator *regulator) |
381 | { | |
382 | return 0; | |
383 | } | |
384 | ||
da07ecd9 MB |
385 | static inline int regulator_disable_deferred(struct regulator *regulator, |
386 | int ms) | |
387 | { | |
388 | return 0; | |
389 | } | |
390 | ||
e2ce4eaa LG |
391 | static inline int regulator_is_enabled(struct regulator *regulator) |
392 | { | |
393 | return 1; | |
394 | } | |
395 | ||
396 | static inline int regulator_bulk_get(struct device *dev, | |
397 | int num_consumers, | |
398 | struct regulator_bulk_data *consumers) | |
399 | { | |
400 | return 0; | |
401 | } | |
402 | ||
e24abd6e AL |
403 | static inline int devm_regulator_bulk_get(struct device *dev, int num_consumers, |
404 | struct regulator_bulk_data *consumers) | |
405 | { | |
406 | return 0; | |
407 | } | |
408 | ||
e2ce4eaa LG |
409 | static inline int regulator_bulk_enable(int num_consumers, |
410 | struct regulator_bulk_data *consumers) | |
411 | { | |
412 | return 0; | |
413 | } | |
414 | ||
415 | static inline int regulator_bulk_disable(int num_consumers, | |
416 | struct regulator_bulk_data *consumers) | |
417 | { | |
418 | return 0; | |
419 | } | |
420 | ||
e1de2f42 DK |
421 | static inline int regulator_bulk_force_disable(int num_consumers, |
422 | struct regulator_bulk_data *consumers) | |
423 | { | |
424 | return 0; | |
425 | } | |
426 | ||
e2ce4eaa LG |
427 | static inline void regulator_bulk_free(int num_consumers, |
428 | struct regulator_bulk_data *consumers) | |
429 | { | |
430 | } | |
431 | ||
b14903e1 AB |
432 | static inline int regulator_can_change_voltage(struct regulator *regulator) |
433 | { | |
434 | return 0; | |
435 | } | |
e2ce4eaa LG |
436 | |
437 | static inline int regulator_set_voltage(struct regulator *regulator, | |
438 | int min_uV, int max_uV) | |
439 | { | |
440 | return 0; | |
441 | } | |
442 | ||
d660e92a VK |
443 | static inline int regulator_set_voltage_time(struct regulator *regulator, |
444 | int old_uV, int new_uV) | |
445 | { | |
446 | return 0; | |
447 | } | |
448 | ||
e2ce4eaa LG |
449 | static inline int regulator_get_voltage(struct regulator *regulator) |
450 | { | |
08aed2f6 | 451 | return -EINVAL; |
e2ce4eaa LG |
452 | } |
453 | ||
4fe23791 PR |
454 | static inline int regulator_is_supported_voltage(struct regulator *regulator, |
455 | int min_uV, int max_uV) | |
456 | { | |
457 | return 0; | |
458 | } | |
459 | ||
e2ce4eaa LG |
460 | static inline int regulator_set_current_limit(struct regulator *regulator, |
461 | int min_uA, int max_uA) | |
462 | { | |
463 | return 0; | |
464 | } | |
465 | ||
466 | static inline int regulator_get_current_limit(struct regulator *regulator) | |
467 | { | |
468 | return 0; | |
469 | } | |
470 | ||
471 | static inline int regulator_set_mode(struct regulator *regulator, | |
472 | unsigned int mode) | |
473 | { | |
474 | return 0; | |
475 | } | |
476 | ||
477 | static inline unsigned int regulator_get_mode(struct regulator *regulator) | |
478 | { | |
479 | return REGULATOR_MODE_NORMAL; | |
480 | } | |
481 | ||
482 | static inline int regulator_set_optimum_mode(struct regulator *regulator, | |
483 | int load_uA) | |
484 | { | |
485 | return REGULATOR_MODE_NORMAL; | |
486 | } | |
487 | ||
f59c8f9f MB |
488 | static inline int regulator_allow_bypass(struct regulator *regulator, |
489 | bool allow) | |
490 | { | |
491 | return 0; | |
492 | } | |
493 | ||
3bc0312e | 494 | static inline struct regmap *regulator_get_regmap(struct regulator *regulator) |
04eca28c TT |
495 | { |
496 | return ERR_PTR(-EOPNOTSUPP); | |
497 | } | |
498 | ||
3bc0312e MB |
499 | static inline int regulator_get_hardware_vsel_register(struct regulator *regulator, |
500 | unsigned *vsel_reg, | |
501 | unsigned *vsel_mask) | |
04eca28c TT |
502 | { |
503 | return -EOPNOTSUPP; | |
504 | } | |
505 | ||
3bc0312e MB |
506 | static inline int regulator_list_hardware_vsel(struct regulator *regulator, |
507 | unsigned selector) | |
04eca28c TT |
508 | { |
509 | return -EOPNOTSUPP; | |
510 | } | |
511 | ||
e2ce4eaa LG |
512 | static inline int regulator_register_notifier(struct regulator *regulator, |
513 | struct notifier_block *nb) | |
514 | { | |
515 | return 0; | |
516 | } | |
517 | ||
518 | static inline int regulator_unregister_notifier(struct regulator *regulator, | |
519 | struct notifier_block *nb) | |
520 | { | |
521 | return 0; | |
522 | } | |
523 | ||
524 | static inline void *regulator_get_drvdata(struct regulator *regulator) | |
525 | { | |
526 | return NULL; | |
527 | } | |
528 | ||
529 | static inline void regulator_set_drvdata(struct regulator *regulator, | |
530 | void *data) | |
531 | { | |
532 | } | |
533 | ||
1a8f85d4 PR |
534 | static inline int regulator_count_voltages(struct regulator *regulator) |
535 | { | |
536 | return 0; | |
537 | } | |
e2ce4eaa LG |
538 | #endif |
539 | ||
3f196577 SG |
540 | static inline int regulator_set_voltage_tol(struct regulator *regulator, |
541 | int new_uV, int tol_uV) | |
542 | { | |
dc9ceed6 MB |
543 | if (regulator_set_voltage(regulator, new_uV, new_uV + tol_uV) == 0) |
544 | return 0; | |
545 | else | |
546 | return regulator_set_voltage(regulator, | |
547 | new_uV - tol_uV, new_uV + tol_uV); | |
3f196577 SG |
548 | } |
549 | ||
fe1e43f7 MB |
550 | static inline int regulator_is_supported_voltage_tol(struct regulator *regulator, |
551 | int target_uV, int tol_uV) | |
552 | { | |
553 | return regulator_is_supported_voltage(regulator, | |
554 | target_uV - tol_uV, | |
555 | target_uV + tol_uV); | |
556 | } | |
557 | ||
e2ce4eaa | 558 | #endif |