Lines Matching full:power
3 * drivers/base/power/runtime.c - Helper functions for device runtime PM
17 #include "power.h"
55 * update_pm_runtime_accounting - Update the time accounting of power states
58 * In order to be able to have time accounting of the various power states
69 if (dev->power.disable_depth > 0) in update_pm_runtime_accounting()
72 last = dev->power.accounting_timestamp; in update_pm_runtime_accounting()
75 dev->power.accounting_timestamp = now; in update_pm_runtime_accounting()
87 if (dev->power.runtime_status == RPM_SUSPENDED) in update_pm_runtime_accounting()
88 dev->power.suspended_time += delta; in update_pm_runtime_accounting()
90 dev->power.active_time += delta; in update_pm_runtime_accounting()
96 dev->power.runtime_status = status; in __update_runtime_status()
104 spin_lock_irqsave(&dev->power.lock, flags); in rpm_get_accounted_time()
107 time = suspended ? dev->power.suspended_time : dev->power.active_time; in rpm_get_accounted_time()
109 spin_unlock_irqrestore(&dev->power.lock, flags); in rpm_get_accounted_time()
131 if (dev->power.timer_expires > 0) { in pm_runtime_deactivate_timer()
132 hrtimer_try_to_cancel(&dev->power.suspend_timer); in pm_runtime_deactivate_timer()
133 dev->power.timer_expires = 0; in pm_runtime_deactivate_timer()
148 dev->power.request = RPM_REQ_NONE; in pm_runtime_cancel_pending()
156 * power.last_busy time. If the delay has already expired or is disabled
157 * (negative) or the power.use_autosuspend flag isn't set, return 0.
160 * This function may be called either with or without dev->power.lock held.
161 * Either way it can be racy, since power.last_busy may be updated at any time.
168 if (!dev->power.use_autosuspend) in pm_runtime_autosuspend_expiration()
171 autosuspend_delay = READ_ONCE(dev->power.autosuspend_delay); in pm_runtime_autosuspend_expiration()
175 expires = READ_ONCE(dev->power.last_busy); in pm_runtime_autosuspend_expiration()
186 return dev->power.memalloc_noio; in dev_memalloc_noio()
225 /* hold power lock since bitfield is not SMP-safe. */ in pm_runtime_set_memalloc_noio()
226 spin_lock_irq(&dev->power.lock); in pm_runtime_set_memalloc_noio()
227 enabled = dev->power.memalloc_noio; in pm_runtime_set_memalloc_noio()
228 dev->power.memalloc_noio = enable; in pm_runtime_set_memalloc_noio()
229 spin_unlock_irq(&dev->power.lock); in pm_runtime_set_memalloc_noio()
262 if (dev->power.runtime_error) in rpm_check_suspend_allowed()
264 else if (dev->power.disable_depth > 0) in rpm_check_suspend_allowed()
266 else if (atomic_read(&dev->power.usage_count) > 0) in rpm_check_suspend_allowed()
268 else if (!dev->power.ignore_children && in rpm_check_suspend_allowed()
269 atomic_read(&dev->power.child_count)) in rpm_check_suspend_allowed()
273 else if ((dev->power.deferred_resume in rpm_check_suspend_allowed()
274 && dev->power.runtime_status == RPM_SUSPENDING) in rpm_check_suspend_allowed()
275 || (dev->power.request_pending in rpm_check_suspend_allowed()
276 && dev->power.request == RPM_REQ_RESUME)) in rpm_check_suspend_allowed()
280 else if (dev->power.runtime_status == RPM_SUSPENDED) in rpm_check_suspend_allowed()
319 * The additional power.usage_count check is a safety net in case in pm_runtime_release_supplier()
325 atomic_read(&supplier->power.usage_count) > 0) in pm_runtime_release_supplier()
364 __releases(&dev->power.lock) __acquires(&dev->power.lock) in __rpm_callback()
367 bool use_links = dev->power.links_count > 0; in __rpm_callback()
369 if (dev->power.irq_safe) { in __rpm_callback()
370 spin_unlock(&dev->power.lock); in __rpm_callback()
372 spin_unlock_irq(&dev->power.lock); in __rpm_callback()
381 if (use_links && dev->power.runtime_status == RPM_RESUMING) { in __rpm_callback()
396 if (dev->power.irq_safe) { in __rpm_callback()
397 spin_lock(&dev->power.lock); in __rpm_callback()
407 && ((dev->power.runtime_status == RPM_SUSPENDING && !retval) in __rpm_callback()
408 || (dev->power.runtime_status == RPM_RESUMING && retval))) { in __rpm_callback()
417 spin_lock_irq(&dev->power.lock); in __rpm_callback()
434 * This function must be called under dev->power.lock with interrupts disabled.
447 else if (dev->power.runtime_status != RPM_ACTIVE) in rpm_idle()
454 else if (dev->power.request_pending && in rpm_idle()
455 dev->power.request > RPM_REQ_IDLE) in rpm_idle()
459 else if (dev->power.idle_notification) in rpm_idle()
465 dev->power.request = RPM_REQ_NONE; in rpm_idle()
470 if (!callback || dev->power.no_callbacks) in rpm_idle()
475 dev->power.request = RPM_REQ_IDLE; in rpm_idle()
476 if (!dev->power.request_pending) { in rpm_idle()
477 dev->power.request_pending = true; in rpm_idle()
478 queue_work(pm_wq, &dev->power.work); in rpm_idle()
484 dev->power.idle_notification = true; in rpm_idle()
486 if (dev->power.irq_safe) in rpm_idle()
487 spin_unlock(&dev->power.lock); in rpm_idle()
489 spin_unlock_irq(&dev->power.lock); in rpm_idle()
493 if (dev->power.irq_safe) in rpm_idle()
494 spin_lock(&dev->power.lock); in rpm_idle()
496 spin_lock_irq(&dev->power.lock); in rpm_idle()
498 dev->power.idle_notification = false; in rpm_idle()
499 wake_up_all(&dev->power.wait_queue); in rpm_idle()
518 if (dev->power.memalloc_noio) { in rpm_callback()
537 dev->power.runtime_error = retval; in rpm_callback()
555 * ignore_children of parent->power and irq_safe of dev->power are not set).
560 * This function must be called under dev->power.lock with interrupts disabled.
563 __releases(&dev->power.lock) __acquires(&dev->power.lock) in rpm_suspend()
577 if (dev->power.runtime_status == RPM_RESUMING && !(rpmflags & RPM_ASYNC)) in rpm_suspend()
584 && dev->power.runtime_status != RPM_SUSPENDING) { in rpm_suspend()
589 dev->power.request = RPM_REQ_NONE; in rpm_suspend()
598 if (!(dev->power.timer_expires && in rpm_suspend()
599 dev->power.timer_expires <= expires)) { in rpm_suspend()
604 u64 slack = (u64)READ_ONCE(dev->power.autosuspend_delay) * in rpm_suspend()
607 dev->power.timer_expires = expires; in rpm_suspend()
608 hrtimer_start_range_ns(&dev->power.suspend_timer, in rpm_suspend()
613 dev->power.timer_autosuspends = 1; in rpm_suspend()
621 if (dev->power.runtime_status == RPM_SUSPENDING) { in rpm_suspend()
629 if (dev->power.irq_safe) { in rpm_suspend()
630 spin_unlock(&dev->power.lock); in rpm_suspend()
634 spin_lock(&dev->power.lock); in rpm_suspend()
640 prepare_to_wait(&dev->power.wait_queue, &wait, in rpm_suspend()
642 if (dev->power.runtime_status != RPM_SUSPENDING) in rpm_suspend()
645 spin_unlock_irq(&dev->power.lock); in rpm_suspend()
649 spin_lock_irq(&dev->power.lock); in rpm_suspend()
651 finish_wait(&dev->power.wait_queue, &wait); in rpm_suspend()
655 if (dev->power.no_callbacks) in rpm_suspend()
660 dev->power.request = (rpmflags & RPM_AUTO) ? in rpm_suspend()
662 if (!dev->power.request_pending) { in rpm_suspend()
663 dev->power.request_pending = true; in rpm_suspend()
664 queue_work(pm_wq, &dev->power.work); in rpm_suspend()
686 atomic_add_unless(&parent->power.child_count, -1, 0); in rpm_suspend()
688 wake_up_all(&dev->power.wait_queue); in rpm_suspend()
690 if (dev->power.deferred_resume) { in rpm_suspend()
691 dev->power.deferred_resume = false; in rpm_suspend()
697 if (dev->power.irq_safe) in rpm_suspend()
701 if (parent && !parent->power.ignore_children) { in rpm_suspend()
702 spin_unlock(&dev->power.lock); in rpm_suspend()
704 spin_lock(&parent->power.lock); in rpm_suspend()
706 spin_unlock(&parent->power.lock); in rpm_suspend()
708 spin_lock(&dev->power.lock); in rpm_suspend()
711 if (dev->power.links_count > 0) { in rpm_suspend()
712 spin_unlock_irq(&dev->power.lock); in rpm_suspend()
716 spin_lock_irq(&dev->power.lock); in rpm_suspend()
727 dev->power.deferred_resume = false; in rpm_suspend()
728 wake_up_all(&dev->power.wait_queue); in rpm_suspend()
731 dev->power.runtime_error = 0; in rpm_suspend()
763 * This function must be called under dev->power.lock with interrupts disabled.
766 __releases(&dev->power.lock) __acquires(&dev->power.lock) in rpm_resume()
775 if (dev->power.runtime_error) in rpm_resume()
777 else if (dev->power.disable_depth == 1 && dev->power.is_suspended in rpm_resume()
778 && dev->power.runtime_status == RPM_ACTIVE) in rpm_resume()
780 else if (dev->power.disable_depth > 0) in rpm_resume()
791 dev->power.request = RPM_REQ_NONE; in rpm_resume()
792 if (!dev->power.timer_autosuspends) in rpm_resume()
795 if (dev->power.runtime_status == RPM_ACTIVE) { in rpm_resume()
800 if (dev->power.runtime_status == RPM_RESUMING in rpm_resume()
801 || dev->power.runtime_status == RPM_SUSPENDING) { in rpm_resume()
805 if (dev->power.runtime_status == RPM_SUSPENDING) in rpm_resume()
806 dev->power.deferred_resume = true; in rpm_resume()
812 if (dev->power.irq_safe) { in rpm_resume()
813 spin_unlock(&dev->power.lock); in rpm_resume()
817 spin_lock(&dev->power.lock); in rpm_resume()
823 prepare_to_wait(&dev->power.wait_queue, &wait, in rpm_resume()
825 if (dev->power.runtime_status != RPM_RESUMING in rpm_resume()
826 && dev->power.runtime_status != RPM_SUSPENDING) in rpm_resume()
829 spin_unlock_irq(&dev->power.lock); in rpm_resume()
833 spin_lock_irq(&dev->power.lock); in rpm_resume()
835 finish_wait(&dev->power.wait_queue, &wait); in rpm_resume()
841 * power.no_callbacks is set, because otherwise we don't know whether in rpm_resume()
844 if (dev->power.no_callbacks && !parent && dev->parent) { in rpm_resume()
845 spin_lock_nested(&dev->parent->power.lock, SINGLE_DEPTH_NESTING); in rpm_resume()
846 if (dev->parent->power.disable_depth > 0 in rpm_resume()
847 || dev->parent->power.ignore_children in rpm_resume()
848 || dev->parent->power.runtime_status == RPM_ACTIVE) { in rpm_resume()
849 atomic_inc(&dev->parent->power.child_count); in rpm_resume()
850 spin_unlock(&dev->parent->power.lock); in rpm_resume()
854 spin_unlock(&dev->parent->power.lock); in rpm_resume()
859 dev->power.request = RPM_REQ_RESUME; in rpm_resume()
860 if (!dev->power.request_pending) { in rpm_resume()
861 dev->power.request_pending = true; in rpm_resume()
862 queue_work(pm_wq, &dev->power.work); in rpm_resume()
875 if (dev->power.irq_safe) in rpm_resume()
877 spin_unlock(&dev->power.lock); in rpm_resume()
881 spin_lock(&parent->power.lock); in rpm_resume()
886 if (!parent->power.disable_depth in rpm_resume()
887 && !parent->power.ignore_children) { in rpm_resume()
889 if (parent->power.runtime_status != RPM_ACTIVE) in rpm_resume()
892 spin_unlock(&parent->power.lock); in rpm_resume()
894 spin_lock(&dev->power.lock); in rpm_resume()
901 if (dev->power.no_callbacks) in rpm_resume()
919 atomic_inc(&parent->power.child_count); in rpm_resume()
921 wake_up_all(&dev->power.wait_queue); in rpm_resume()
927 if (parent && !dev->power.irq_safe) { in rpm_resume()
928 spin_unlock_irq(&dev->power.lock); in rpm_resume()
932 spin_lock_irq(&dev->power.lock); in rpm_resume()
949 struct device *dev = container_of(work, struct device, power.work); in pm_runtime_work()
952 spin_lock_irq(&dev->power.lock); in pm_runtime_work()
954 if (!dev->power.request_pending) in pm_runtime_work()
957 req = dev->power.request; in pm_runtime_work()
958 dev->power.request = RPM_REQ_NONE; in pm_runtime_work()
959 dev->power.request_pending = false; in pm_runtime_work()
979 spin_unlock_irq(&dev->power.lock); in pm_runtime_work()
990 struct device *dev = container_of(timer, struct device, power.suspend_timer); in pm_suspend_timer_fn()
994 spin_lock_irqsave(&dev->power.lock, flags); in pm_suspend_timer_fn()
996 expires = dev->power.timer_expires; in pm_suspend_timer_fn()
1002 dev->power.timer_expires = 0; in pm_suspend_timer_fn()
1003 rpm_suspend(dev, dev->power.timer_autosuspends ? in pm_suspend_timer_fn()
1007 spin_unlock_irqrestore(&dev->power.lock, flags); in pm_suspend_timer_fn()
1023 spin_lock_irqsave(&dev->power.lock, flags); in pm_schedule_suspend()
1038 dev->power.timer_expires = expires; in pm_schedule_suspend()
1039 dev->power.timer_autosuspends = 0; in pm_schedule_suspend()
1040 hrtimer_start(&dev->power.suspend_timer, expires, HRTIMER_MODE_ABS); in pm_schedule_suspend()
1043 spin_unlock_irqrestore(&dev->power.lock, flags); in pm_schedule_suspend()
1067 if (!atomic_dec_and_test(&dev->power.usage_count)) { in __pm_runtime_idle()
1073 might_sleep_if(!(rpmflags & RPM_ASYNC) && !dev->power.irq_safe); in __pm_runtime_idle()
1075 spin_lock_irqsave(&dev->power.lock, flags); in __pm_runtime_idle()
1077 spin_unlock_irqrestore(&dev->power.lock, flags); in __pm_runtime_idle()
1101 if (!atomic_dec_and_test(&dev->power.usage_count)) { in __pm_runtime_suspend()
1107 might_sleep_if(!(rpmflags & RPM_ASYNC) && !dev->power.irq_safe); in __pm_runtime_suspend()
1109 spin_lock_irqsave(&dev->power.lock, flags); in __pm_runtime_suspend()
1111 spin_unlock_irqrestore(&dev->power.lock, flags); in __pm_runtime_suspend()
1133 might_sleep_if(!(rpmflags & RPM_ASYNC) && !dev->power.irq_safe && in __pm_runtime_resume()
1134 dev->power.runtime_status != RPM_ACTIVE); in __pm_runtime_resume()
1137 atomic_inc(&dev->power.usage_count); in __pm_runtime_resume()
1139 spin_lock_irqsave(&dev->power.lock, flags); in __pm_runtime_resume()
1141 spin_unlock_irqrestore(&dev->power.lock, flags); in __pm_runtime_resume()
1174 spin_lock_irqsave(&dev->power.lock, flags); in pm_runtime_get_if_active()
1175 if (dev->power.disable_depth > 0) { in pm_runtime_get_if_active()
1177 } else if (dev->power.runtime_status != RPM_ACTIVE) { in pm_runtime_get_if_active()
1181 atomic_inc(&dev->power.usage_count); in pm_runtime_get_if_active()
1183 retval = atomic_inc_not_zero(&dev->power.usage_count); in pm_runtime_get_if_active()
1186 spin_unlock_irqrestore(&dev->power.lock, flags); in pm_runtime_get_if_active()
1197 * If runtime PM of the device is disabled or its power.runtime_error field is
1201 * parent's power.ignore_children flag is unset, the device's status cannot be
1204 * If successful, __pm_runtime_set_status() clears the power.runtime_error field
1225 spin_lock_irq(&dev->power.lock); in __pm_runtime_set_status()
1231 if (dev->power.runtime_error || dev->power.disable_depth) in __pm_runtime_set_status()
1232 dev->power.disable_depth++; in __pm_runtime_set_status()
1236 spin_unlock_irq(&dev->power.lock); in __pm_runtime_set_status()
1257 spin_lock_irq(&dev->power.lock); in __pm_runtime_set_status()
1259 if (dev->power.runtime_status == status || !parent) in __pm_runtime_set_status()
1263 atomic_add_unless(&parent->power.child_count, -1, 0); in __pm_runtime_set_status()
1264 notify_parent = !parent->power.ignore_children; in __pm_runtime_set_status()
1266 spin_lock_nested(&parent->power.lock, SINGLE_DEPTH_NESTING); in __pm_runtime_set_status()
1271 * 'power.ignore_children' flag unset. in __pm_runtime_set_status()
1273 if (!parent->power.disable_depth in __pm_runtime_set_status()
1274 && !parent->power.ignore_children in __pm_runtime_set_status()
1275 && parent->power.runtime_status != RPM_ACTIVE) { in __pm_runtime_set_status()
1280 } else if (dev->power.runtime_status == RPM_SUSPENDED) { in __pm_runtime_set_status()
1281 atomic_inc(&parent->power.child_count); in __pm_runtime_set_status()
1284 spin_unlock(&parent->power.lock); in __pm_runtime_set_status()
1295 dev->power.runtime_error = 0; in __pm_runtime_set_status()
1298 spin_unlock_irq(&dev->power.lock); in __pm_runtime_set_status()
1324 * Should be called under dev->power.lock with interrupts disabled.
1330 if (dev->power.request_pending) { in __pm_runtime_barrier()
1331 dev->power.request = RPM_REQ_NONE; in __pm_runtime_barrier()
1332 spin_unlock_irq(&dev->power.lock); in __pm_runtime_barrier()
1334 cancel_work_sync(&dev->power.work); in __pm_runtime_barrier()
1336 spin_lock_irq(&dev->power.lock); in __pm_runtime_barrier()
1337 dev->power.request_pending = false; in __pm_runtime_barrier()
1340 if (dev->power.runtime_status == RPM_SUSPENDING in __pm_runtime_barrier()
1341 || dev->power.runtime_status == RPM_RESUMING in __pm_runtime_barrier()
1342 || dev->power.idle_notification) { in __pm_runtime_barrier()
1347 prepare_to_wait(&dev->power.wait_queue, &wait, in __pm_runtime_barrier()
1349 if (dev->power.runtime_status != RPM_SUSPENDING in __pm_runtime_barrier()
1350 && dev->power.runtime_status != RPM_RESUMING in __pm_runtime_barrier()
1351 && !dev->power.idle_notification) in __pm_runtime_barrier()
1353 spin_unlock_irq(&dev->power.lock); in __pm_runtime_barrier()
1357 spin_lock_irq(&dev->power.lock); in __pm_runtime_barrier()
1359 finish_wait(&dev->power.wait_queue, &wait); in __pm_runtime_barrier()
1382 spin_lock_irq(&dev->power.lock); in pm_runtime_barrier()
1384 if (dev->power.request_pending in pm_runtime_barrier()
1385 && dev->power.request == RPM_REQ_RESUME) { in pm_runtime_barrier()
1392 spin_unlock_irq(&dev->power.lock); in pm_runtime_barrier()
1404 * Increment power.disable_depth for the device and if it was zero previously,
1410 * __pm_runtime_disable() is called and power.disable_depth is zero, the
1415 spin_lock_irq(&dev->power.lock); in __pm_runtime_disable()
1417 if (dev->power.disable_depth > 0) { in __pm_runtime_disable()
1418 dev->power.disable_depth++; in __pm_runtime_disable()
1427 if (check_resume && dev->power.request_pending in __pm_runtime_disable()
1428 && dev->power.request == RPM_REQ_RESUME) { in __pm_runtime_disable()
1443 if (!dev->power.disable_depth++) in __pm_runtime_disable()
1447 spin_unlock_irq(&dev->power.lock); in __pm_runtime_disable()
1459 spin_lock_irqsave(&dev->power.lock, flags); in pm_runtime_enable()
1461 if (dev->power.disable_depth > 0) { in pm_runtime_enable()
1462 dev->power.disable_depth--; in pm_runtime_enable()
1465 if (!dev->power.disable_depth) in pm_runtime_enable()
1466 dev->power.accounting_timestamp = ktime_get_mono_fast_ns(); in pm_runtime_enable()
1471 WARN(!dev->power.disable_depth && in pm_runtime_enable()
1472 dev->power.runtime_status == RPM_SUSPENDED && in pm_runtime_enable()
1473 !dev->power.ignore_children && in pm_runtime_enable()
1474 atomic_read(&dev->power.child_count) > 0, in pm_runtime_enable()
1478 spin_unlock_irqrestore(&dev->power.lock, flags); in pm_runtime_enable()
1508 * Increase the device's usage count and clear its power.runtime_auto flag,
1514 spin_lock_irq(&dev->power.lock); in pm_runtime_forbid()
1515 if (!dev->power.runtime_auto) in pm_runtime_forbid()
1518 dev->power.runtime_auto = false; in pm_runtime_forbid()
1519 atomic_inc(&dev->power.usage_count); in pm_runtime_forbid()
1523 spin_unlock_irq(&dev->power.lock); in pm_runtime_forbid()
1531 * Decrease the device's usage count and set its power.runtime_auto flag.
1535 spin_lock_irq(&dev->power.lock); in pm_runtime_allow()
1536 if (dev->power.runtime_auto) in pm_runtime_allow()
1539 dev->power.runtime_auto = true; in pm_runtime_allow()
1540 if (atomic_dec_and_test(&dev->power.usage_count)) in pm_runtime_allow()
1546 spin_unlock_irq(&dev->power.lock); in pm_runtime_allow()
1554 * Set the power.no_callbacks flag, which tells the PM core that this
1555 * device is power-managed through its parent and has no runtime PM
1560 spin_lock_irq(&dev->power.lock); in pm_runtime_no_callbacks()
1561 dev->power.no_callbacks = 1; in pm_runtime_no_callbacks()
1562 spin_unlock_irq(&dev->power.lock); in pm_runtime_no_callbacks()
1572 * Set the power.irq_safe flag, which tells the PM core that the
1583 spin_lock_irq(&dev->power.lock); in pm_runtime_irq_safe()
1584 dev->power.irq_safe = 1; in pm_runtime_irq_safe()
1585 spin_unlock_irq(&dev->power.lock); in pm_runtime_irq_safe()
1598 * This function must be called under dev->power.lock with interrupts disabled.
1602 int delay = dev->power.autosuspend_delay; in update_autosuspend()
1605 if (dev->power.use_autosuspend && delay < 0) { in update_autosuspend()
1609 atomic_inc(&dev->power.usage_count); in update_autosuspend()
1621 atomic_dec(&dev->power.usage_count); in update_autosuspend()
1633 * Set the device's power.autosuspend_delay value. If it changes to negative
1634 * and the power.use_autosuspend flag is set, prevent runtime suspends. If it
1641 spin_lock_irq(&dev->power.lock); in pm_runtime_set_autosuspend_delay()
1642 old_delay = dev->power.autosuspend_delay; in pm_runtime_set_autosuspend_delay()
1643 old_use = dev->power.use_autosuspend; in pm_runtime_set_autosuspend_delay()
1644 dev->power.autosuspend_delay = delay; in pm_runtime_set_autosuspend_delay()
1646 spin_unlock_irq(&dev->power.lock); in pm_runtime_set_autosuspend_delay()
1655 * Set the device's power.use_autosuspend flag, and allow or prevent runtime
1662 spin_lock_irq(&dev->power.lock); in __pm_runtime_use_autosuspend()
1663 old_delay = dev->power.autosuspend_delay; in __pm_runtime_use_autosuspend()
1664 old_use = dev->power.use_autosuspend; in __pm_runtime_use_autosuspend()
1665 dev->power.use_autosuspend = use; in __pm_runtime_use_autosuspend()
1667 spin_unlock_irq(&dev->power.lock); in __pm_runtime_use_autosuspend()
1677 dev->power.runtime_status = RPM_SUSPENDED; in pm_runtime_init()
1678 dev->power.idle_notification = false; in pm_runtime_init()
1680 dev->power.disable_depth = 1; in pm_runtime_init()
1681 atomic_set(&dev->power.usage_count, 0); in pm_runtime_init()
1683 dev->power.runtime_error = 0; in pm_runtime_init()
1685 atomic_set(&dev->power.child_count, 0); in pm_runtime_init()
1687 dev->power.runtime_auto = true; in pm_runtime_init()
1689 dev->power.request_pending = false; in pm_runtime_init()
1690 dev->power.request = RPM_REQ_NONE; in pm_runtime_init()
1691 dev->power.deferred_resume = false; in pm_runtime_init()
1692 dev->power.needs_force_resume = 0; in pm_runtime_init()
1693 INIT_WORK(&dev->power.work, pm_runtime_work); in pm_runtime_init()
1695 dev->power.timer_expires = 0; in pm_runtime_init()
1696 hrtimer_init(&dev->power.suspend_timer, CLOCK_MONOTONIC, HRTIMER_MODE_ABS); in pm_runtime_init()
1697 dev->power.suspend_timer.function = pm_suspend_timer_fn; in pm_runtime_init()
1699 init_waitqueue_head(&dev->power.wait_queue); in pm_runtime_init()
1709 if (dev->power.runtime_status == RPM_ACTIVE) in pm_runtime_reinit()
1711 if (dev->power.irq_safe) { in pm_runtime_reinit()
1712 spin_lock_irq(&dev->power.lock); in pm_runtime_reinit()
1713 dev->power.irq_safe = 0; in pm_runtime_reinit()
1714 spin_unlock_irq(&dev->power.lock); in pm_runtime_reinit()
1770 spin_lock_irqsave(&dev->power.lock, flags); in pm_runtime_put_suppliers()
1773 spin_unlock_irqrestore(&dev->power.lock, flags); in pm_runtime_put_suppliers()
1783 spin_lock_irq(&dev->power.lock); in pm_runtime_new_link()
1784 dev->power.links_count++; in pm_runtime_new_link()
1785 spin_unlock_irq(&dev->power.lock); in pm_runtime_new_link()
1790 spin_lock_irq(&dev->power.lock); in pm_runtime_drop_link_count()
1791 WARN_ON(dev->power.links_count == 0); in pm_runtime_drop_link_count()
1792 dev->power.links_count--; in pm_runtime_drop_link_count()
1793 spin_unlock_irq(&dev->power.lock); in pm_runtime_drop_link_count()
1816 return atomic_read(&dev->power.usage_count) <= 1 && in pm_runtime_need_not_resume()
1817 (atomic_read(&dev->power.child_count) == 0 || in pm_runtime_need_not_resume()
1818 dev->power.ignore_children); in pm_runtime_need_not_resume()
1834 * sure the device is put into low power state and it should only be used during
1863 dev->power.needs_force_resume = 1; in pm_runtime_force_suspend()
1879 * into low power state by a call to pm_runtime_force_suspend(). Here we reverse
1880 * those actions and bring the device into full power, if it is expected to be
1891 if (!pm_runtime_status_suspended(dev) || !dev->power.needs_force_resume) in pm_runtime_force_resume()
1910 dev->power.needs_force_resume = 0; in pm_runtime_force_resume()