1 /* SPDX-License-Identifier: GPL-2.0-only */ 2 /* 3 * pm_runtime.h - Device run-time power management helper functions. 4 * 5 * Copyright (C) 2009 Rafael J. Wysocki <[email protected]> 6 */ 7 8 #ifndef _LINUX_PM_RUNTIME_H 9 #define _LINUX_PM_RUNTIME_H 10 11 #include <linux/device.h> 12 #include <linux/notifier.h> 13 #include <linux/pm.h> 14 15 #include <linux/jiffies.h> 16 17 /* Runtime PM flag argument bits */ 18 #define RPM_ASYNC 0x01 /* Request is asynchronous */ 19 #define RPM_NOWAIT 0x02 /* Don't wait for concurrent 20 state change */ 21 #define RPM_GET_PUT 0x04 /* Increment/decrement the 22 usage_count */ 23 #define RPM_AUTO 0x08 /* Use autosuspend_delay */ 24 25 /* 26 * Use this for defining a set of PM operations to be used in all situations 27 * (system suspend, hibernation or runtime PM). 28 * 29 * Note that the behaviour differs from the deprecated UNIVERSAL_DEV_PM_OPS() 30 * macro, which uses the provided callbacks for both runtime PM and system 31 * sleep, while DEFINE_RUNTIME_DEV_PM_OPS() uses pm_runtime_force_suspend() 32 * and pm_runtime_force_resume() for its system sleep callbacks. 33 * 34 * If the underlying dev_pm_ops struct symbol has to be exported, use 35 * EXPORT_RUNTIME_DEV_PM_OPS() or EXPORT_GPL_RUNTIME_DEV_PM_OPS() instead. 36 */ 37 #define DEFINE_RUNTIME_DEV_PM_OPS(name, suspend_fn, resume_fn, idle_fn) \ 38 _DEFINE_DEV_PM_OPS(name, pm_runtime_force_suspend, \ 39 pm_runtime_force_resume, suspend_fn, \ 40 resume_fn, idle_fn) 41 42 #define EXPORT_RUNTIME_DEV_PM_OPS(name, suspend_fn, resume_fn, idle_fn) \ 43 EXPORT_DEV_PM_OPS(name) = { \ 44 RUNTIME_PM_OPS(suspend_fn, resume_fn, idle_fn) \ 45 } 46 #define EXPORT_GPL_RUNTIME_DEV_PM_OPS(name, suspend_fn, resume_fn, idle_fn) \ 47 EXPORT_GPL_DEV_PM_OPS(name) = { \ 48 RUNTIME_PM_OPS(suspend_fn, resume_fn, idle_fn) \ 49 } 50 #define EXPORT_NS_RUNTIME_DEV_PM_OPS(name, suspend_fn, resume_fn, idle_fn, ns) \ 51 EXPORT_NS_DEV_PM_OPS(name, ns) = { \ 52 RUNTIME_PM_OPS(suspend_fn, resume_fn, idle_fn) \ 53 } 54 #define EXPORT_NS_GPL_RUNTIME_DEV_PM_OPS(name, suspend_fn, resume_fn, idle_fn, ns) \ 55 EXPORT_NS_GPL_DEV_PM_OPS(name, ns) = { \ 56 RUNTIME_PM_OPS(suspend_fn, resume_fn, idle_fn) \ 57 } 58 59 #ifdef CONFIG_PM 60 extern struct workqueue_struct *pm_wq; 61 62 static inline bool queue_pm_work(struct work_struct *work) 63 { 64 return queue_work(pm_wq, work); 65 } 66 67 extern int pm_generic_runtime_suspend(struct device *dev); 68 extern int pm_generic_runtime_resume(struct device *dev); 69 extern int pm_runtime_force_suspend(struct device *dev); 70 extern int pm_runtime_force_resume(struct device *dev); 71 72 extern int __pm_runtime_idle(struct device *dev, int rpmflags); 73 extern int __pm_runtime_suspend(struct device *dev, int rpmflags); 74 extern int __pm_runtime_resume(struct device *dev, int rpmflags); 75 extern int pm_runtime_get_if_active(struct device *dev); 76 extern int pm_runtime_get_if_in_use(struct device *dev); 77 extern int pm_schedule_suspend(struct device *dev, unsigned int delay); 78 extern int __pm_runtime_set_status(struct device *dev, unsigned int status); 79 extern int pm_runtime_barrier(struct device *dev); 80 extern bool pm_runtime_block_if_disabled(struct device *dev); 81 extern void pm_runtime_unblock(struct device *dev); 82 extern void pm_runtime_enable(struct device *dev); 83 extern void __pm_runtime_disable(struct device *dev, bool check_resume); 84 extern bool pm_runtime_blocked(struct device *dev); 85 extern void pm_runtime_allow(struct device *dev); 86 extern void pm_runtime_forbid(struct device *dev); 87 extern void pm_runtime_no_callbacks(struct device *dev); 88 extern void pm_runtime_irq_safe(struct device *dev); 89 extern void __pm_runtime_use_autosuspend(struct device *dev, bool use); 90 extern void pm_runtime_set_autosuspend_delay(struct device *dev, int delay); 91 extern u64 pm_runtime_autosuspend_expiration(struct device *dev); 92 extern void pm_runtime_set_memalloc_noio(struct device *dev, bool enable); 93 extern void pm_runtime_get_suppliers(struct device *dev); 94 extern void pm_runtime_put_suppliers(struct device *dev); 95 extern void pm_runtime_new_link(struct device *dev); 96 extern void pm_runtime_drop_link(struct device_link *link); 97 extern void pm_runtime_release_supplier(struct device_link *link); 98 99 extern int devm_pm_runtime_enable(struct device *dev); 100 101 /** 102 * pm_suspend_ignore_children - Set runtime PM behavior regarding children. 103 * @dev: Target device. 104 * @enable: Whether or not to ignore possible dependencies on children. 105 * 106 * The dependencies of @dev on its children will not be taken into account by 107 * the runtime PM framework going forward if @enable is %true, or they will 108 * be taken into account otherwise. 109 */ 110 static inline void pm_suspend_ignore_children(struct device *dev, bool enable) 111 { 112 dev->power.ignore_children = enable; 113 } 114 115 /** 116 * pm_runtime_get_noresume - Bump up runtime PM usage counter of a device. 117 * @dev: Target device. 118 */ 119 static inline void pm_runtime_get_noresume(struct device *dev) 120 { 121 atomic_inc(&dev->power.usage_count); 122 } 123 124 /** 125 * pm_runtime_put_noidle - Drop runtime PM usage counter of a device. 126 * @dev: Target device. 127 * 128 * Decrement the runtime PM usage counter of @dev unless it is 0 already. 129 */ 130 static inline void pm_runtime_put_noidle(struct device *dev) 131 { 132 atomic_add_unless(&dev->power.usage_count, -1, 0); 133 } 134 135 /** 136 * pm_runtime_suspended - Check whether or not a device is runtime-suspended. 137 * @dev: Target device. 138 * 139 * Return %true if runtime PM is enabled for @dev and its runtime PM status is 140 * %RPM_SUSPENDED, or %false otherwise. 141 * 142 * Note that the return value of this function can only be trusted if it is 143 * called under the runtime PM lock of @dev or under conditions in which 144 * runtime PM cannot be either disabled or enabled for @dev and its runtime PM 145 * status cannot change. 146 */ 147 static inline bool pm_runtime_suspended(struct device *dev) 148 { 149 return dev->power.runtime_status == RPM_SUSPENDED 150 && !dev->power.disable_depth; 151 } 152 153 /** 154 * pm_runtime_active - Check whether or not a device is runtime-active. 155 * @dev: Target device. 156 * 157 * Return %true if runtime PM is disabled for @dev or its runtime PM status is 158 * %RPM_ACTIVE, or %false otherwise. 159 * 160 * Note that the return value of this function can only be trusted if it is 161 * called under the runtime PM lock of @dev or under conditions in which 162 * runtime PM cannot be either disabled or enabled for @dev and its runtime PM 163 * status cannot change. 164 */ 165 static inline bool pm_runtime_active(struct device *dev) 166 { 167 return dev->power.runtime_status == RPM_ACTIVE 168 || dev->power.disable_depth; 169 } 170 171 /** 172 * pm_runtime_status_suspended - Check if runtime PM status is "suspended". 173 * @dev: Target device. 174 * 175 * Return %true if the runtime PM status of @dev is %RPM_SUSPENDED, or %false 176 * otherwise, regardless of whether or not runtime PM has been enabled for @dev. 177 * 178 * Note that the return value of this function can only be trusted if it is 179 * called under the runtime PM lock of @dev or under conditions in which the 180 * runtime PM status of @dev cannot change. 181 */ 182 static inline bool pm_runtime_status_suspended(struct device *dev) 183 { 184 return dev->power.runtime_status == RPM_SUSPENDED; 185 } 186 187 /** 188 * pm_runtime_enabled - Check if runtime PM is enabled. 189 * @dev: Target device. 190 * 191 * Return %true if runtime PM is enabled for @dev or %false otherwise. 192 * 193 * Note that the return value of this function can only be trusted if it is 194 * called under the runtime PM lock of @dev or under conditions in which 195 * runtime PM cannot be either disabled or enabled for @dev. 196 */ 197 static inline bool pm_runtime_enabled(struct device *dev) 198 { 199 return !dev->power.disable_depth; 200 } 201 202 /** 203 * pm_runtime_has_no_callbacks - Check if runtime PM callbacks may be present. 204 * @dev: Target device. 205 * 206 * Return %true if @dev is a special device without runtime PM callbacks or 207 * %false otherwise. 208 */ 209 static inline bool pm_runtime_has_no_callbacks(struct device *dev) 210 { 211 return dev->power.no_callbacks; 212 } 213 214 /** 215 * pm_runtime_mark_last_busy - Update the last access time of a device. 216 * @dev: Target device. 217 * 218 * Update the last access time of @dev used by the runtime PM autosuspend 219 * mechanism to the current time as returned by ktime_get_mono_fast_ns(). 220 */ 221 static inline void pm_runtime_mark_last_busy(struct device *dev) 222 { 223 WRITE_ONCE(dev->power.last_busy, ktime_get_mono_fast_ns()); 224 } 225 226 /** 227 * pm_runtime_is_irq_safe - Check if runtime PM can work in interrupt context. 228 * @dev: Target device. 229 * 230 * Return %true if @dev has been marked as an "IRQ-safe" device (with respect 231 * to runtime PM), in which case its runtime PM callabcks can be expected to 232 * work correctly when invoked from interrupt handlers. 233 */ 234 static inline bool pm_runtime_is_irq_safe(struct device *dev) 235 { 236 return dev->power.irq_safe; 237 } 238 239 extern u64 pm_runtime_suspended_time(struct device *dev); 240 241 #else /* !CONFIG_PM */ 242 243 static inline bool queue_pm_work(struct work_struct *work) { return false; } 244 245 static inline int pm_generic_runtime_suspend(struct device *dev) { return 0; } 246 static inline int pm_generic_runtime_resume(struct device *dev) { return 0; } 247 static inline int pm_runtime_force_suspend(struct device *dev) { return 0; } 248 static inline int pm_runtime_force_resume(struct device *dev) { return 0; } 249 250 static inline int __pm_runtime_idle(struct device *dev, int rpmflags) 251 { 252 return -ENOSYS; 253 } 254 static inline int __pm_runtime_suspend(struct device *dev, int rpmflags) 255 { 256 return -ENOSYS; 257 } 258 static inline int __pm_runtime_resume(struct device *dev, int rpmflags) 259 { 260 return 1; 261 } 262 static inline int pm_schedule_suspend(struct device *dev, unsigned int delay) 263 { 264 return -ENOSYS; 265 } 266 static inline int pm_runtime_get_if_in_use(struct device *dev) 267 { 268 return -EINVAL; 269 } 270 static inline int pm_runtime_get_if_active(struct device *dev) 271 { 272 return -EINVAL; 273 } 274 static inline int __pm_runtime_set_status(struct device *dev, 275 unsigned int status) { return 0; } 276 static inline int pm_runtime_barrier(struct device *dev) { return 0; } 277 static inline bool pm_runtime_block_if_disabled(struct device *dev) { return true; } 278 static inline void pm_runtime_unblock(struct device *dev) {} 279 static inline void pm_runtime_enable(struct device *dev) {} 280 static inline void __pm_runtime_disable(struct device *dev, bool c) {} 281 static inline bool pm_runtime_blocked(struct device *dev) { return true; } 282 static inline void pm_runtime_allow(struct device *dev) {} 283 static inline void pm_runtime_forbid(struct device *dev) {} 284 285 static inline int devm_pm_runtime_enable(struct device *dev) { return 0; } 286 287 static inline void pm_suspend_ignore_children(struct device *dev, bool enable) {} 288 static inline void pm_runtime_get_noresume(struct device *dev) {} 289 static inline void pm_runtime_put_noidle(struct device *dev) {} 290 static inline bool pm_runtime_suspended(struct device *dev) { return false; } 291 static inline bool pm_runtime_active(struct device *dev) { return true; } 292 static inline bool pm_runtime_status_suspended(struct device *dev) { return false; } 293 static inline bool pm_runtime_enabled(struct device *dev) { return false; } 294 295 static inline void pm_runtime_no_callbacks(struct device *dev) {} 296 static inline void pm_runtime_irq_safe(struct device *dev) {} 297 static inline bool pm_runtime_is_irq_safe(struct device *dev) { return false; } 298 299 static inline bool pm_runtime_has_no_callbacks(struct device *dev) { return false; } 300 static inline void pm_runtime_mark_last_busy(struct device *dev) {} 301 static inline void __pm_runtime_use_autosuspend(struct device *dev, 302 bool use) {} 303 static inline void pm_runtime_set_autosuspend_delay(struct device *dev, 304 int delay) {} 305 static inline u64 pm_runtime_autosuspend_expiration( 306 struct device *dev) { return 0; } 307 static inline void pm_runtime_set_memalloc_noio(struct device *dev, 308 bool enable){} 309 static inline void pm_runtime_get_suppliers(struct device *dev) {} 310 static inline void pm_runtime_put_suppliers(struct device *dev) {} 311 static inline void pm_runtime_new_link(struct device *dev) {} 312 static inline void pm_runtime_drop_link(struct device_link *link) {} 313 static inline void pm_runtime_release_supplier(struct device_link *link) {} 314 315 #endif /* !CONFIG_PM */ 316 317 /** 318 * pm_runtime_idle - Conditionally set up autosuspend of a device or suspend it. 319 * @dev: Target device. 320 * 321 * Invoke the "idle check" callback of @dev and, depending on its return value, 322 * set up autosuspend of @dev or suspend it (depending on whether or not 323 * autosuspend has been enabled for it). 324 */ 325 static inline int pm_runtime_idle(struct device *dev) 326 { 327 return __pm_runtime_idle(dev, 0); 328 } 329 330 /** 331 * pm_runtime_suspend - Suspend a device synchronously. 332 * @dev: Target device. 333 */ 334 static inline int pm_runtime_suspend(struct device *dev) 335 { 336 return __pm_runtime_suspend(dev, 0); 337 } 338 339 /** 340 * pm_runtime_autosuspend - Set up autosuspend of a device or suspend it. 341 * @dev: Target device. 342 * 343 * Set up autosuspend of @dev or suspend it (depending on whether or not 344 * autosuspend is enabled for it) without engaging its "idle check" callback. 345 */ 346 static inline int pm_runtime_autosuspend(struct device *dev) 347 { 348 return __pm_runtime_suspend(dev, RPM_AUTO); 349 } 350 351 /** 352 * pm_runtime_resume - Resume a device synchronously. 353 * @dev: Target device. 354 */ 355 static inline int pm_runtime_resume(struct device *dev) 356 { 357 return __pm_runtime_resume(dev, 0); 358 } 359 360 /** 361 * pm_request_idle - Queue up "idle check" execution for a device. 362 * @dev: Target device. 363 * 364 * Queue up a work item to run an equivalent of pm_runtime_idle() for @dev 365 * asynchronously. 366 */ 367 static inline int pm_request_idle(struct device *dev) 368 { 369 return __pm_runtime_idle(dev, RPM_ASYNC); 370 } 371 372 /** 373 * pm_request_resume - Queue up runtime-resume of a device. 374 * @dev: Target device. 375 */ 376 static inline int pm_request_resume(struct device *dev) 377 { 378 return __pm_runtime_resume(dev, RPM_ASYNC); 379 } 380 381 /** 382 * pm_request_autosuspend - Queue up autosuspend of a device. 383 * @dev: Target device. 384 * 385 * Queue up a work item to run an equivalent pm_runtime_autosuspend() for @dev 386 * asynchronously. 387 */ 388 static inline int pm_request_autosuspend(struct device *dev) 389 { 390 return __pm_runtime_suspend(dev, RPM_ASYNC | RPM_AUTO); 391 } 392 393 /** 394 * pm_runtime_get - Bump up usage counter and queue up resume of a device. 395 * @dev: Target device. 396 * 397 * Bump up the runtime PM usage counter of @dev and queue up a work item to 398 * carry out runtime-resume of it. 399 */ 400 static inline int pm_runtime_get(struct device *dev) 401 { 402 return __pm_runtime_resume(dev, RPM_GET_PUT | RPM_ASYNC); 403 } 404 405 /** 406 * pm_runtime_get_sync - Bump up usage counter of a device and resume it. 407 * @dev: Target device. 408 * 409 * Bump up the runtime PM usage counter of @dev and carry out runtime-resume of 410 * it synchronously. 411 * 412 * The possible return values of this function are the same as for 413 * pm_runtime_resume() and the runtime PM usage counter of @dev remains 414 * incremented in all cases, even if it returns an error code. 415 * Consider using pm_runtime_resume_and_get() instead of it, especially 416 * if its return value is checked by the caller, as this is likely to result 417 * in cleaner code. 418 */ 419 static inline int pm_runtime_get_sync(struct device *dev) 420 { 421 return __pm_runtime_resume(dev, RPM_GET_PUT); 422 } 423 424 /** 425 * pm_runtime_resume_and_get - Bump up usage counter of a device and resume it. 426 * @dev: Target device. 427 * 428 * Resume @dev synchronously and if that is successful, increment its runtime 429 * PM usage counter. Return 0 if the runtime PM usage counter of @dev has been 430 * incremented or a negative error code otherwise. 431 */ 432 static inline int pm_runtime_resume_and_get(struct device *dev) 433 { 434 int ret; 435 436 ret = __pm_runtime_resume(dev, RPM_GET_PUT); 437 if (ret < 0) { 438 pm_runtime_put_noidle(dev); 439 return ret; 440 } 441 442 return 0; 443 } 444 445 /** 446 * pm_runtime_put - Drop device usage counter and queue up "idle check" if 0. 447 * @dev: Target device. 448 * 449 * Decrement the runtime PM usage counter of @dev and if it turns out to be 450 * equal to 0, queue up a work item for @dev like in pm_request_idle(). 451 */ 452 static inline int pm_runtime_put(struct device *dev) 453 { 454 return __pm_runtime_idle(dev, RPM_GET_PUT | RPM_ASYNC); 455 } 456 457 /** 458 * __pm_runtime_put_autosuspend - Drop device usage counter and queue autosuspend if 0. 459 * @dev: Target device. 460 * 461 * Decrement the runtime PM usage counter of @dev and if it turns out to be 462 * equal to 0, queue up a work item for @dev like in pm_request_autosuspend(). 463 */ 464 static inline int __pm_runtime_put_autosuspend(struct device *dev) 465 { 466 return __pm_runtime_suspend(dev, RPM_GET_PUT | RPM_ASYNC | RPM_AUTO); 467 } 468 469 /** 470 * pm_runtime_put_autosuspend - Drop device usage counter and queue autosuspend if 0. 471 * @dev: Target device. 472 * 473 * Decrement the runtime PM usage counter of @dev and if it turns out to be 474 * equal to 0, queue up a work item for @dev like in pm_request_autosuspend(). 475 */ 476 static inline int pm_runtime_put_autosuspend(struct device *dev) 477 { 478 return __pm_runtime_suspend(dev, 479 RPM_GET_PUT | RPM_ASYNC | RPM_AUTO); 480 } 481 482 /** 483 * pm_runtime_put_sync - Drop device usage counter and run "idle check" if 0. 484 * @dev: Target device. 485 * 486 * Decrement the runtime PM usage counter of @dev and if it turns out to be 487 * equal to 0, invoke the "idle check" callback of @dev and, depending on its 488 * return value, set up autosuspend of @dev or suspend it (depending on whether 489 * or not autosuspend has been enabled for it). 490 * 491 * The possible return values of this function are the same as for 492 * pm_runtime_idle() and the runtime PM usage counter of @dev remains 493 * decremented in all cases, even if it returns an error code. 494 */ 495 static inline int pm_runtime_put_sync(struct device *dev) 496 { 497 return __pm_runtime_idle(dev, RPM_GET_PUT); 498 } 499 500 /** 501 * pm_runtime_put_sync_suspend - Drop device usage counter and suspend if 0. 502 * @dev: Target device. 503 * 504 * Decrement the runtime PM usage counter of @dev and if it turns out to be 505 * equal to 0, carry out runtime-suspend of @dev synchronously. 506 * 507 * The possible return values of this function are the same as for 508 * pm_runtime_suspend() and the runtime PM usage counter of @dev remains 509 * decremented in all cases, even if it returns an error code. 510 */ 511 static inline int pm_runtime_put_sync_suspend(struct device *dev) 512 { 513 return __pm_runtime_suspend(dev, RPM_GET_PUT); 514 } 515 516 /** 517 * pm_runtime_put_sync_autosuspend - Drop device usage counter and autosuspend if 0. 518 * @dev: Target device. 519 * 520 * Decrement the runtime PM usage counter of @dev and if it turns out to be 521 * equal to 0, set up autosuspend of @dev or suspend it synchronously (depending 522 * on whether or not autosuspend has been enabled for it). 523 * 524 * The possible return values of this function are the same as for 525 * pm_runtime_autosuspend() and the runtime PM usage counter of @dev remains 526 * decremented in all cases, even if it returns an error code. 527 */ 528 static inline int pm_runtime_put_sync_autosuspend(struct device *dev) 529 { 530 return __pm_runtime_suspend(dev, RPM_GET_PUT | RPM_AUTO); 531 } 532 533 /** 534 * pm_runtime_set_active - Set runtime PM status to "active". 535 * @dev: Target device. 536 * 537 * Set the runtime PM status of @dev to %RPM_ACTIVE and ensure that dependencies 538 * of it will be taken into account. 539 * 540 * It is not valid to call this function for devices with runtime PM enabled. 541 */ 542 static inline int pm_runtime_set_active(struct device *dev) 543 { 544 return __pm_runtime_set_status(dev, RPM_ACTIVE); 545 } 546 547 /** 548 * pm_runtime_set_suspended - Set runtime PM status to "suspended". 549 * @dev: Target device. 550 * 551 * Set the runtime PM status of @dev to %RPM_SUSPENDED and ensure that 552 * dependencies of it will be taken into account. 553 * 554 * It is not valid to call this function for devices with runtime PM enabled. 555 */ 556 static inline int pm_runtime_set_suspended(struct device *dev) 557 { 558 return __pm_runtime_set_status(dev, RPM_SUSPENDED); 559 } 560 561 /** 562 * pm_runtime_disable - Disable runtime PM for a device. 563 * @dev: Target device. 564 * 565 * Prevent the runtime PM framework from working with @dev by incrementing its 566 * "disable" counter. 567 * 568 * If the counter is zero when this function runs and there is a pending runtime 569 * resume request for @dev, it will be resumed. If the counter is still zero at 570 * that point, all of the pending runtime PM requests for @dev will be canceled 571 * and all runtime PM operations in progress involving it will be waited for to 572 * complete. 573 * 574 * For each invocation of this function for @dev, there must be a matching 575 * pm_runtime_enable() call, so that runtime PM is eventually enabled for it 576 * again. 577 */ 578 static inline void pm_runtime_disable(struct device *dev) 579 { 580 __pm_runtime_disable(dev, true); 581 } 582 583 /** 584 * pm_runtime_use_autosuspend - Allow autosuspend to be used for a device. 585 * @dev: Target device. 586 * 587 * Allow the runtime PM autosuspend mechanism to be used for @dev whenever 588 * requested (or "autosuspend" will be handled as direct runtime-suspend for 589 * it). 590 * 591 * NOTE: It's important to undo this with pm_runtime_dont_use_autosuspend() 592 * at driver exit time unless your driver initially enabled pm_runtime 593 * with devm_pm_runtime_enable() (which handles it for you). 594 */ 595 static inline void pm_runtime_use_autosuspend(struct device *dev) 596 { 597 __pm_runtime_use_autosuspend(dev, true); 598 } 599 600 /** 601 * pm_runtime_dont_use_autosuspend - Prevent autosuspend from being used. 602 * @dev: Target device. 603 * 604 * Prevent the runtime PM autosuspend mechanism from being used for @dev which 605 * means that "autosuspend" will be handled as direct runtime-suspend for it 606 * going forward. 607 */ 608 static inline void pm_runtime_dont_use_autosuspend(struct device *dev) 609 { 610 __pm_runtime_use_autosuspend(dev, false); 611 } 612 613 #endif 614