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 of_regulator_bulk_get_all(struct device *dev, struct device_node *np, 204 struct regulator_bulk_data **consumers); 205 int __must_check devm_regulator_bulk_get(struct device *dev, int num_consumers, 206 struct regulator_bulk_data *consumers); 207 void devm_regulator_bulk_put(struct regulator_bulk_data *consumers); 208 int __must_check devm_regulator_bulk_get_exclusive(struct device *dev, int num_consumers, 209 struct regulator_bulk_data *consumers); 210 int __must_check devm_regulator_bulk_get_const( 211 struct device *dev, int num_consumers, 212 const struct regulator_bulk_data *in_consumers, 213 struct regulator_bulk_data **out_consumers); 214 int __must_check regulator_bulk_enable(int num_consumers, 215 struct regulator_bulk_data *consumers); 216 int devm_regulator_bulk_get_enable(struct device *dev, int num_consumers, 217 const char * const *id); 218 int regulator_bulk_disable(int num_consumers, 219 struct regulator_bulk_data *consumers); 220 int regulator_bulk_force_disable(int num_consumers, 221 struct regulator_bulk_data *consumers); 222 void regulator_bulk_free(int num_consumers, 223 struct regulator_bulk_data *consumers); 224 225 int regulator_count_voltages(struct regulator *regulator); 226 int regulator_list_voltage(struct regulator *regulator, unsigned selector); 227 int regulator_is_supported_voltage(struct regulator *regulator, 228 int min_uV, int max_uV); 229 unsigned int regulator_get_linear_step(struct regulator *regulator); 230 int regulator_set_voltage(struct regulator *regulator, int min_uV, int max_uV); 231 int regulator_set_voltage_time(struct regulator *regulator, 232 int old_uV, int new_uV); 233 int regulator_get_voltage(struct regulator *regulator); 234 int regulator_sync_voltage(struct regulator *regulator); 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_get_error_flags(struct regulator *regulator, 242 unsigned int *flags); 243 int regulator_set_load(struct regulator *regulator, int load_uA); 244 245 int regulator_allow_bypass(struct regulator *regulator, bool allow); 246 247 struct regmap *regulator_get_regmap(struct regulator *regulator); 248 int regulator_get_hardware_vsel_register(struct regulator *regulator, 249 unsigned *vsel_reg, 250 unsigned *vsel_mask); 251 int regulator_list_hardware_vsel(struct regulator *regulator, 252 unsigned selector); 253 int regulator_hardware_enable(struct regulator *regulator, bool enable); 254 255 /* regulator notifier block */ 256 int regulator_register_notifier(struct regulator *regulator, 257 struct notifier_block *nb); 258 int devm_regulator_register_notifier(struct regulator *regulator, 259 struct notifier_block *nb); 260 int regulator_unregister_notifier(struct regulator *regulator, 261 struct notifier_block *nb); 262 void devm_regulator_unregister_notifier(struct regulator *regulator, 263 struct notifier_block *nb); 264 265 /* regulator suspend */ 266 int regulator_suspend_enable(struct regulator_dev *rdev, 267 suspend_state_t state); 268 int regulator_suspend_disable(struct regulator_dev *rdev, 269 suspend_state_t state); 270 int regulator_set_suspend_voltage(struct regulator *regulator, int min_uV, 271 int max_uV, suspend_state_t state); 272 273 /* driver data - core doesn't touch */ 274 void *regulator_get_drvdata(struct regulator *regulator); 275 void regulator_set_drvdata(struct regulator *regulator, void *data); 276 277 /* misc helpers */ 278 279 void regulator_bulk_set_supply_names(struct regulator_bulk_data *consumers, 280 const char *const *supply_names, 281 unsigned int num_supplies); 282 283 bool regulator_is_equal(struct regulator *reg1, struct regulator *reg2); 284 285 #else 286 287 /* 288 * Make sure client drivers will still build on systems with no software 289 * controllable voltage or current regulators. 290 */ regulator_get(struct device * dev,const char * id)291 static inline struct regulator *__must_check regulator_get(struct device *dev, 292 const char *id) 293 { 294 /* Nothing except the stubbed out regulator API should be 295 * looking at the value except to check if it is an error 296 * value. Drivers are free to handle NULL specifically by 297 * skipping all regulator API calls, but they don't have to. 298 * Drivers which don't, should make sure they properly handle 299 * corner cases of the API, such as regulator_get_voltage() 300 * returning 0. 301 */ 302 return NULL; 303 } 304 305 static inline struct regulator *__must_check devm_regulator_get(struct device * dev,const char * id)306 devm_regulator_get(struct device *dev, const char *id) 307 { 308 return NULL; 309 } 310 311 static inline struct regulator *__must_check regulator_get_exclusive(struct device * dev,const char * id)312 regulator_get_exclusive(struct device *dev, const char *id) 313 { 314 return ERR_PTR(-ENODEV); 315 } 316 317 static inline struct regulator *__must_check devm_regulator_get_exclusive(struct device * dev,const char * id)318 devm_regulator_get_exclusive(struct device *dev, const char *id) 319 { 320 return ERR_PTR(-ENODEV); 321 } 322 devm_regulator_get_enable(struct device * dev,const char * id)323 static inline int devm_regulator_get_enable(struct device *dev, const char *id) 324 { 325 return 0; 326 } 327 devm_regulator_get_enable_optional(struct device * dev,const char * id)328 static inline int devm_regulator_get_enable_optional(struct device *dev, 329 const char *id) 330 { 331 return 0; 332 } 333 devm_regulator_get_enable_read_voltage(struct device * dev,const char * id)334 static inline int devm_regulator_get_enable_read_voltage(struct device *dev, 335 const char *id) 336 { 337 return -ENODEV; 338 } 339 340 static inline struct regulator *__must_check regulator_get_optional(struct device * dev,const char * id)341 regulator_get_optional(struct device *dev, const char *id) 342 { 343 return ERR_PTR(-ENODEV); 344 } 345 346 347 static inline struct regulator *__must_check devm_regulator_get_optional(struct device * dev,const char * id)348 devm_regulator_get_optional(struct device *dev, const char *id) 349 { 350 return ERR_PTR(-ENODEV); 351 } 352 regulator_put(struct regulator * regulator)353 static inline void regulator_put(struct regulator *regulator) 354 { 355 } 356 devm_regulator_put(struct regulator * regulator)357 static inline void devm_regulator_put(struct regulator *regulator) 358 { 359 } 360 devm_regulator_bulk_put(struct regulator_bulk_data * consumers)361 static inline void devm_regulator_bulk_put(struct regulator_bulk_data *consumers) 362 { 363 } 364 regulator_register_supply_alias(struct device * dev,const char * id,struct device * alias_dev,const char * alias_id)365 static inline int regulator_register_supply_alias(struct device *dev, 366 const char *id, 367 struct device *alias_dev, 368 const char *alias_id) 369 { 370 return 0; 371 } 372 regulator_unregister_supply_alias(struct device * dev,const char * id)373 static inline void regulator_unregister_supply_alias(struct device *dev, 374 const char *id) 375 { 376 } 377 regulator_bulk_register_supply_alias(struct device * dev,const char * const * id,struct device * alias_dev,const char * const * alias_id,int num_id)378 static inline int regulator_bulk_register_supply_alias(struct device *dev, 379 const char *const *id, 380 struct device *alias_dev, 381 const char * const *alias_id, 382 int num_id) 383 { 384 return 0; 385 } 386 regulator_bulk_unregister_supply_alias(struct device * dev,const char * const * id,int num_id)387 static inline void regulator_bulk_unregister_supply_alias(struct device *dev, 388 const char * const *id, 389 int num_id) 390 { 391 } 392 devm_regulator_register_supply_alias(struct device * dev,const char * id,struct device * alias_dev,const char * alias_id)393 static inline int devm_regulator_register_supply_alias(struct device *dev, 394 const char *id, 395 struct device *alias_dev, 396 const char *alias_id) 397 { 398 return 0; 399 } 400 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)401 static inline int devm_regulator_bulk_register_supply_alias(struct device *dev, 402 const char *const *id, 403 struct device *alias_dev, 404 const char *const *alias_id, 405 int num_id) 406 { 407 return 0; 408 } 409 regulator_enable(struct regulator * regulator)410 static inline int regulator_enable(struct regulator *regulator) 411 { 412 return 0; 413 } 414 regulator_disable(struct regulator * regulator)415 static inline int regulator_disable(struct regulator *regulator) 416 { 417 return 0; 418 } 419 regulator_force_disable(struct regulator * regulator)420 static inline int regulator_force_disable(struct regulator *regulator) 421 { 422 return 0; 423 } 424 regulator_disable_deferred(struct regulator * regulator,int ms)425 static inline int regulator_disable_deferred(struct regulator *regulator, 426 int ms) 427 { 428 return 0; 429 } 430 regulator_is_enabled(struct regulator * regulator)431 static inline int regulator_is_enabled(struct regulator *regulator) 432 { 433 return 1; 434 } 435 regulator_bulk_get(struct device * dev,int num_consumers,struct regulator_bulk_data * consumers)436 static inline int regulator_bulk_get(struct device *dev, 437 int num_consumers, 438 struct regulator_bulk_data *consumers) 439 { 440 return 0; 441 } 442 devm_regulator_bulk_get(struct device * dev,int num_consumers,struct regulator_bulk_data * consumers)443 static inline int devm_regulator_bulk_get(struct device *dev, int num_consumers, 444 struct regulator_bulk_data *consumers) 445 { 446 return 0; 447 } 448 of_regulator_bulk_get_all(struct device * dev,struct device_node * np,struct regulator_bulk_data ** consumers)449 static inline int of_regulator_bulk_get_all(struct device *dev, struct device_node *np, 450 struct regulator_bulk_data **consumers) 451 { 452 return 0; 453 } 454 devm_regulator_bulk_get_const(struct device * dev,int num_consumers,const struct regulator_bulk_data * in_consumers,struct regulator_bulk_data ** out_consumers)455 static inline int devm_regulator_bulk_get_const( 456 struct device *dev, int num_consumers, 457 const struct regulator_bulk_data *in_consumers, 458 struct regulator_bulk_data **out_consumers) 459 { 460 return 0; 461 } 462 regulator_bulk_enable(int num_consumers,struct regulator_bulk_data * consumers)463 static inline int regulator_bulk_enable(int num_consumers, 464 struct regulator_bulk_data *consumers) 465 { 466 return 0; 467 } 468 devm_regulator_bulk_get_enable(struct device * dev,int num_consumers,const char * const * id)469 static inline int devm_regulator_bulk_get_enable(struct device *dev, 470 int num_consumers, 471 const char * const *id) 472 { 473 return 0; 474 } 475 regulator_bulk_disable(int num_consumers,struct regulator_bulk_data * consumers)476 static inline int regulator_bulk_disable(int num_consumers, 477 struct regulator_bulk_data *consumers) 478 { 479 return 0; 480 } 481 regulator_bulk_force_disable(int num_consumers,struct regulator_bulk_data * consumers)482 static inline int regulator_bulk_force_disable(int num_consumers, 483 struct regulator_bulk_data *consumers) 484 { 485 return 0; 486 } 487 regulator_bulk_free(int num_consumers,struct regulator_bulk_data * consumers)488 static inline void regulator_bulk_free(int num_consumers, 489 struct regulator_bulk_data *consumers) 490 { 491 } 492 regulator_set_voltage(struct regulator * regulator,int min_uV,int max_uV)493 static inline int regulator_set_voltage(struct regulator *regulator, 494 int min_uV, int max_uV) 495 { 496 return 0; 497 } 498 regulator_set_voltage_time(struct regulator * regulator,int old_uV,int new_uV)499 static inline int regulator_set_voltage_time(struct regulator *regulator, 500 int old_uV, int new_uV) 501 { 502 return 0; 503 } 504 regulator_get_voltage(struct regulator * regulator)505 static inline int regulator_get_voltage(struct regulator *regulator) 506 { 507 return -EINVAL; 508 } 509 regulator_sync_voltage(struct regulator * regulator)510 static inline int regulator_sync_voltage(struct regulator *regulator) 511 { 512 return -EINVAL; 513 } 514 regulator_is_supported_voltage(struct regulator * regulator,int min_uV,int max_uV)515 static inline int regulator_is_supported_voltage(struct regulator *regulator, 516 int min_uV, int max_uV) 517 { 518 return 0; 519 } 520 regulator_get_linear_step(struct regulator * regulator)521 static inline unsigned int regulator_get_linear_step(struct regulator *regulator) 522 { 523 return 0; 524 } 525 regulator_set_current_limit(struct regulator * regulator,int min_uA,int max_uA)526 static inline int regulator_set_current_limit(struct regulator *regulator, 527 int min_uA, int max_uA) 528 { 529 return 0; 530 } 531 regulator_get_current_limit(struct regulator * regulator)532 static inline int regulator_get_current_limit(struct regulator *regulator) 533 { 534 return 0; 535 } 536 regulator_set_mode(struct regulator * regulator,unsigned int mode)537 static inline int regulator_set_mode(struct regulator *regulator, 538 unsigned int mode) 539 { 540 return 0; 541 } 542 regulator_get_mode(struct regulator * regulator)543 static inline unsigned int regulator_get_mode(struct regulator *regulator) 544 { 545 return REGULATOR_MODE_NORMAL; 546 } 547 regulator_get_error_flags(struct regulator * regulator,unsigned int * flags)548 static inline int regulator_get_error_flags(struct regulator *regulator, 549 unsigned int *flags) 550 { 551 return -EINVAL; 552 } 553 regulator_set_load(struct regulator * regulator,int load_uA)554 static inline int regulator_set_load(struct regulator *regulator, int load_uA) 555 { 556 return 0; 557 } 558 regulator_allow_bypass(struct regulator * regulator,bool allow)559 static inline int regulator_allow_bypass(struct regulator *regulator, 560 bool allow) 561 { 562 return 0; 563 } 564 regulator_get_regmap(struct regulator * regulator)565 static inline struct regmap *regulator_get_regmap(struct regulator *regulator) 566 { 567 return ERR_PTR(-EOPNOTSUPP); 568 } 569 regulator_get_hardware_vsel_register(struct regulator * regulator,unsigned * vsel_reg,unsigned * vsel_mask)570 static inline int regulator_get_hardware_vsel_register(struct regulator *regulator, 571 unsigned *vsel_reg, 572 unsigned *vsel_mask) 573 { 574 return -EOPNOTSUPP; 575 } 576 regulator_list_hardware_vsel(struct regulator * regulator,unsigned selector)577 static inline int regulator_list_hardware_vsel(struct regulator *regulator, 578 unsigned selector) 579 { 580 return -EOPNOTSUPP; 581 } 582 regulator_hardware_enable(struct regulator * regulator,bool enable)583 static inline int regulator_hardware_enable(struct regulator *regulator, 584 bool enable) 585 { 586 return -EOPNOTSUPP; 587 } 588 regulator_register_notifier(struct regulator * regulator,struct notifier_block * nb)589 static inline int regulator_register_notifier(struct regulator *regulator, 590 struct notifier_block *nb) 591 { 592 return 0; 593 } 594 devm_regulator_register_notifier(struct regulator * regulator,struct notifier_block * nb)595 static inline int devm_regulator_register_notifier(struct regulator *regulator, 596 struct notifier_block *nb) 597 { 598 return 0; 599 } 600 regulator_unregister_notifier(struct regulator * regulator,struct notifier_block * nb)601 static inline int regulator_unregister_notifier(struct regulator *regulator, 602 struct notifier_block *nb) 603 { 604 return 0; 605 } 606 devm_regulator_unregister_notifier(struct regulator * regulator,struct notifier_block * nb)607 static inline int devm_regulator_unregister_notifier(struct regulator *regulator, 608 struct notifier_block *nb) 609 { 610 return 0; 611 } 612 regulator_suspend_enable(struct regulator_dev * rdev,suspend_state_t state)613 static inline int regulator_suspend_enable(struct regulator_dev *rdev, 614 suspend_state_t state) 615 { 616 return -EINVAL; 617 } 618 regulator_suspend_disable(struct regulator_dev * rdev,suspend_state_t state)619 static inline int regulator_suspend_disable(struct regulator_dev *rdev, 620 suspend_state_t state) 621 { 622 return -EINVAL; 623 } 624 regulator_set_suspend_voltage(struct regulator * regulator,int min_uV,int max_uV,suspend_state_t state)625 static inline int regulator_set_suspend_voltage(struct regulator *regulator, 626 int min_uV, int max_uV, 627 suspend_state_t state) 628 { 629 return -EINVAL; 630 } 631 regulator_get_drvdata(struct regulator * regulator)632 static inline void *regulator_get_drvdata(struct regulator *regulator) 633 { 634 return NULL; 635 } 636 regulator_set_drvdata(struct regulator * regulator,void * data)637 static inline void regulator_set_drvdata(struct regulator *regulator, 638 void *data) 639 { 640 } 641 regulator_count_voltages(struct regulator * regulator)642 static inline int regulator_count_voltages(struct regulator *regulator) 643 { 644 return 0; 645 } 646 regulator_list_voltage(struct regulator * regulator,unsigned selector)647 static inline int regulator_list_voltage(struct regulator *regulator, unsigned selector) 648 { 649 return -EINVAL; 650 } 651 652 static inline void regulator_bulk_set_supply_names(struct regulator_bulk_data * consumers,const char * const * supply_names,unsigned int num_supplies)653 regulator_bulk_set_supply_names(struct regulator_bulk_data *consumers, 654 const char *const *supply_names, 655 unsigned int num_supplies) 656 { 657 } 658 659 static inline bool regulator_is_equal(struct regulator * reg1,struct regulator * reg2)660 regulator_is_equal(struct regulator *reg1, struct regulator *reg2) 661 { 662 return false; 663 } 664 #endif 665 regulator_set_voltage_triplet(struct regulator * regulator,int min_uV,int target_uV,int max_uV)666 static inline int regulator_set_voltage_triplet(struct regulator *regulator, 667 int min_uV, int target_uV, 668 int max_uV) 669 { 670 if (regulator_set_voltage(regulator, target_uV, max_uV) == 0) 671 return 0; 672 673 return regulator_set_voltage(regulator, min_uV, max_uV); 674 } 675 regulator_set_voltage_tol(struct regulator * regulator,int new_uV,int tol_uV)676 static inline int regulator_set_voltage_tol(struct regulator *regulator, 677 int new_uV, int tol_uV) 678 { 679 if (regulator_set_voltage(regulator, new_uV, new_uV + tol_uV) == 0) 680 return 0; 681 else 682 return regulator_set_voltage(regulator, 683 new_uV - tol_uV, new_uV + tol_uV); 684 } 685 regulator_is_supported_voltage_tol(struct regulator * regulator,int target_uV,int tol_uV)686 static inline int regulator_is_supported_voltage_tol(struct regulator *regulator, 687 int target_uV, int tol_uV) 688 { 689 return regulator_is_supported_voltage(regulator, 690 target_uV - tol_uV, 691 target_uV + tol_uV); 692 } 693 694 #endif 695