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()
261 if (dev->power.runtime_error) in rpm_check_suspend_allowed()
263 else if (dev->power.disable_depth > 0) in rpm_check_suspend_allowed()
265 else if (atomic_read(&dev->power.usage_count)) in rpm_check_suspend_allowed()
267 else if (!dev->power.ignore_children && atomic_read(&dev->power.child_count)) in rpm_check_suspend_allowed()
271 else if ((dev->power.deferred_resume && in rpm_check_suspend_allowed()
272 dev->power.runtime_status == RPM_SUSPENDING) || in rpm_check_suspend_allowed()
273 (dev->power.request_pending && dev->power.request == RPM_REQ_RESUME)) in rpm_check_suspend_allowed()
277 else if (dev->power.runtime_status == RPM_SUSPENDED) in rpm_check_suspend_allowed()
316 * The additional power.usage_count check is a safety net in case in pm_runtime_release_supplier()
322 atomic_read(&supplier->power.usage_count) > 0) in pm_runtime_release_supplier()
361 __releases(&dev->power.lock) __acquires(&dev->power.lock) in __rpm_callback()
364 bool use_links = dev->power.links_count > 0; in __rpm_callback()
366 if (dev->power.irq_safe) { in __rpm_callback()
367 spin_unlock(&dev->power.lock); in __rpm_callback()
369 spin_unlock_irq(&dev->power.lock); in __rpm_callback()
378 if (use_links && dev->power.runtime_status == RPM_RESUMING) { in __rpm_callback()
394 if (dev->power.irq_safe) { in __rpm_callback()
395 spin_lock(&dev->power.lock); in __rpm_callback()
405 ((dev->power.runtime_status == RPM_SUSPENDING && !retval) || in __rpm_callback()
406 (dev->power.runtime_status == RPM_RESUMING && retval))) { in __rpm_callback()
415 spin_lock_irq(&dev->power.lock); in __rpm_callback()
430 if (dev->power.memalloc_noio) { in rpm_callback()
449 dev->power.runtime_error = retval; in rpm_callback()
464 * This function must be called under dev->power.lock with interrupts disabled.
477 else if (dev->power.runtime_status != RPM_ACTIVE) in rpm_idle()
484 else if (dev->power.request_pending && in rpm_idle()
485 dev->power.request > RPM_REQ_IDLE) in rpm_idle()
489 else if (dev->power.idle_notification) in rpm_idle()
496 dev->power.request = RPM_REQ_NONE; in rpm_idle()
501 if (!callback || dev->power.no_callbacks) in rpm_idle()
506 dev->power.request = RPM_REQ_IDLE; in rpm_idle()
507 if (!dev->power.request_pending) { in rpm_idle()
508 dev->power.request_pending = true; in rpm_idle()
509 queue_work(pm_wq, &dev->power.work); in rpm_idle()
515 dev->power.idle_notification = true; in rpm_idle()
517 if (dev->power.irq_safe) in rpm_idle()
518 spin_unlock(&dev->power.lock); in rpm_idle()
520 spin_unlock_irq(&dev->power.lock); in rpm_idle()
524 if (dev->power.irq_safe) in rpm_idle()
525 spin_lock(&dev->power.lock); in rpm_idle()
527 spin_lock_irq(&dev->power.lock); in rpm_idle()
529 dev->power.idle_notification = false; in rpm_idle()
530 wake_up_all(&dev->power.wait_queue); in rpm_idle()
551 * ignore_children of parent->power and irq_safe of dev->power are not set).
556 * This function must be called under dev->power.lock with interrupts disabled.
559 __releases(&dev->power.lock) __acquires(&dev->power.lock) in rpm_suspend()
573 if (dev->power.runtime_status == RPM_RESUMING && !(rpmflags & RPM_ASYNC)) in rpm_suspend()
580 if ((rpmflags & RPM_AUTO) && dev->power.runtime_status != RPM_SUSPENDING) { in rpm_suspend()
585 dev->power.request = RPM_REQ_NONE; in rpm_suspend()
594 if (!(dev->power.timer_expires && in rpm_suspend()
595 dev->power.timer_expires <= expires)) { in rpm_suspend()
600 u64 slack = (u64)READ_ONCE(dev->power.autosuspend_delay) * in rpm_suspend()
603 dev->power.timer_expires = expires; in rpm_suspend()
604 hrtimer_start_range_ns(&dev->power.suspend_timer, in rpm_suspend()
609 dev->power.timer_autosuspends = 1; in rpm_suspend()
617 if (dev->power.runtime_status == RPM_SUSPENDING) { in rpm_suspend()
625 if (dev->power.irq_safe) { in rpm_suspend()
626 spin_unlock(&dev->power.lock); in rpm_suspend()
630 spin_lock(&dev->power.lock); in rpm_suspend()
636 prepare_to_wait(&dev->power.wait_queue, &wait, in rpm_suspend()
638 if (dev->power.runtime_status != RPM_SUSPENDING) in rpm_suspend()
641 spin_unlock_irq(&dev->power.lock); in rpm_suspend()
645 spin_lock_irq(&dev->power.lock); in rpm_suspend()
647 finish_wait(&dev->power.wait_queue, &wait); in rpm_suspend()
651 if (dev->power.no_callbacks) in rpm_suspend()
656 dev->power.request = (rpmflags & RPM_AUTO) ? in rpm_suspend()
658 if (!dev->power.request_pending) { in rpm_suspend()
659 dev->power.request_pending = true; in rpm_suspend()
660 queue_work(pm_wq, &dev->power.work); in rpm_suspend()
682 atomic_add_unless(&parent->power.child_count, -1, 0); in rpm_suspend()
684 wake_up_all(&dev->power.wait_queue); in rpm_suspend()
686 if (dev->power.deferred_resume) { in rpm_suspend()
687 dev->power.deferred_resume = false; in rpm_suspend()
693 if (dev->power.irq_safe) in rpm_suspend()
697 if (parent && !parent->power.ignore_children) { in rpm_suspend()
698 spin_unlock(&dev->power.lock); in rpm_suspend()
700 spin_lock(&parent->power.lock); in rpm_suspend()
702 spin_unlock(&parent->power.lock); in rpm_suspend()
704 spin_lock(&dev->power.lock); in rpm_suspend()
707 if (dev->power.links_count > 0) { in rpm_suspend()
708 spin_unlock_irq(&dev->power.lock); in rpm_suspend()
712 spin_lock_irq(&dev->power.lock); in rpm_suspend()
723 dev->power.deferred_resume = false; in rpm_suspend()
724 wake_up_all(&dev->power.wait_queue); in rpm_suspend()
727 dev->power.runtime_error = 0; in rpm_suspend()
759 * This function must be called under dev->power.lock with interrupts disabled.
762 __releases(&dev->power.lock) __acquires(&dev->power.lock) in rpm_resume()
771 if (dev->power.runtime_error) { in rpm_resume()
773 } else if (dev->power.disable_depth > 0) { in rpm_resume()
774 if (dev->power.runtime_status == RPM_ACTIVE && in rpm_resume()
775 dev->power.last_status == RPM_ACTIVE) in rpm_resume()
789 dev->power.request = RPM_REQ_NONE; in rpm_resume()
790 if (!dev->power.timer_autosuspends) in rpm_resume()
793 if (dev->power.runtime_status == RPM_ACTIVE) { in rpm_resume()
798 if (dev->power.runtime_status == RPM_RESUMING || in rpm_resume()
799 dev->power.runtime_status == RPM_SUSPENDING) { in rpm_resume()
803 if (dev->power.runtime_status == RPM_SUSPENDING) { in rpm_resume()
804 dev->power.deferred_resume = true; in rpm_resume()
813 if (dev->power.irq_safe) { in rpm_resume()
814 spin_unlock(&dev->power.lock); in rpm_resume()
818 spin_lock(&dev->power.lock); in rpm_resume()
824 prepare_to_wait(&dev->power.wait_queue, &wait, in rpm_resume()
826 if (dev->power.runtime_status != RPM_RESUMING && in rpm_resume()
827 dev->power.runtime_status != RPM_SUSPENDING) in rpm_resume()
830 spin_unlock_irq(&dev->power.lock); in rpm_resume()
834 spin_lock_irq(&dev->power.lock); in rpm_resume()
836 finish_wait(&dev->power.wait_queue, &wait); in rpm_resume()
842 * power.no_callbacks is set, because otherwise we don't know whether in rpm_resume()
845 if (dev->power.no_callbacks && !parent && dev->parent) { in rpm_resume()
846 spin_lock_nested(&dev->parent->power.lock, SINGLE_DEPTH_NESTING); in rpm_resume()
847 if (dev->parent->power.disable_depth > 0 || in rpm_resume()
848 dev->parent->power.ignore_children || in rpm_resume()
849 dev->parent->power.runtime_status == RPM_ACTIVE) { in rpm_resume()
850 atomic_inc(&dev->parent->power.child_count); in rpm_resume()
851 spin_unlock(&dev->parent->power.lock); in rpm_resume()
855 spin_unlock(&dev->parent->power.lock); in rpm_resume()
860 dev->power.request = RPM_REQ_RESUME; in rpm_resume()
861 if (!dev->power.request_pending) { in rpm_resume()
862 dev->power.request_pending = true; in rpm_resume()
863 queue_work(pm_wq, &dev->power.work); in rpm_resume()
876 if (dev->power.irq_safe) in rpm_resume()
879 spin_unlock(&dev->power.lock); in rpm_resume()
883 spin_lock(&parent->power.lock); in rpm_resume()
888 if (!parent->power.disable_depth && in rpm_resume()
889 !parent->power.ignore_children) { in rpm_resume()
891 if (parent->power.runtime_status != RPM_ACTIVE) in rpm_resume()
894 spin_unlock(&parent->power.lock); in rpm_resume()
896 spin_lock(&dev->power.lock); in rpm_resume()
904 if (dev->power.no_callbacks) in rpm_resume()
922 atomic_inc(&parent->power.child_count); in rpm_resume()
924 wake_up_all(&dev->power.wait_queue); in rpm_resume()
930 if (parent && !dev->power.irq_safe) { in rpm_resume()
931 spin_unlock_irq(&dev->power.lock); in rpm_resume()
935 spin_lock_irq(&dev->power.lock); in rpm_resume()
952 struct device *dev = container_of(work, struct device, power.work); in pm_runtime_work()
955 spin_lock_irq(&dev->power.lock); in pm_runtime_work()
957 if (!dev->power.request_pending) in pm_runtime_work()
960 req = dev->power.request; in pm_runtime_work()
961 dev->power.request = RPM_REQ_NONE; in pm_runtime_work()
962 dev->power.request_pending = false; in pm_runtime_work()
982 spin_unlock_irq(&dev->power.lock); in pm_runtime_work()
993 struct device *dev = container_of(timer, struct device, power.suspend_timer); in pm_suspend_timer_fn()
997 spin_lock_irqsave(&dev->power.lock, flags); in pm_suspend_timer_fn()
999 expires = dev->power.timer_expires; in pm_suspend_timer_fn()
1005 dev->power.timer_expires = 0; in pm_suspend_timer_fn()
1006 rpm_suspend(dev, dev->power.timer_autosuspends ? in pm_suspend_timer_fn()
1010 spin_unlock_irqrestore(&dev->power.lock, flags); in pm_suspend_timer_fn()
1026 spin_lock_irqsave(&dev->power.lock, flags); in pm_schedule_suspend()
1041 dev->power.timer_expires = expires; in pm_schedule_suspend()
1042 dev->power.timer_autosuspends = 0; in pm_schedule_suspend()
1043 hrtimer_start(&dev->power.suspend_timer, expires, HRTIMER_MODE_ABS); in pm_schedule_suspend()
1046 spin_unlock_irqrestore(&dev->power.lock, flags); in pm_schedule_suspend()
1056 ret = atomic_sub_return(1, &dev->power.usage_count); in rpm_drop_usage_count()
1066 atomic_inc(&dev->power.usage_count); in rpm_drop_usage_count()
1099 might_sleep_if(!(rpmflags & RPM_ASYNC) && !dev->power.irq_safe); in __pm_runtime_idle()
1101 spin_lock_irqsave(&dev->power.lock, flags); in __pm_runtime_idle()
1103 spin_unlock_irqrestore(&dev->power.lock, flags); in __pm_runtime_idle()
1137 might_sleep_if(!(rpmflags & RPM_ASYNC) && !dev->power.irq_safe); in __pm_runtime_suspend()
1139 spin_lock_irqsave(&dev->power.lock, flags); in __pm_runtime_suspend()
1141 spin_unlock_irqrestore(&dev->power.lock, flags); in __pm_runtime_suspend()
1163 might_sleep_if(!(rpmflags & RPM_ASYNC) && !dev->power.irq_safe && in __pm_runtime_resume()
1164 dev->power.runtime_status != RPM_ACTIVE); in __pm_runtime_resume()
1167 atomic_inc(&dev->power.usage_count); in __pm_runtime_resume()
1169 spin_lock_irqsave(&dev->power.lock, flags); in __pm_runtime_resume()
1171 spin_unlock_irqrestore(&dev->power.lock, flags); in __pm_runtime_resume()
1204 spin_lock_irqsave(&dev->power.lock, flags); in pm_runtime_get_if_active()
1205 if (dev->power.disable_depth > 0) { in pm_runtime_get_if_active()
1207 } else if (dev->power.runtime_status != RPM_ACTIVE) { in pm_runtime_get_if_active()
1211 atomic_inc(&dev->power.usage_count); in pm_runtime_get_if_active()
1213 retval = atomic_inc_not_zero(&dev->power.usage_count); in pm_runtime_get_if_active()
1216 spin_unlock_irqrestore(&dev->power.lock, flags); in pm_runtime_get_if_active()
1227 * If runtime PM of the device is disabled or its power.runtime_error field is
1231 * parent's power.ignore_children flag is unset, the device's status cannot be
1234 * If successful, __pm_runtime_set_status() clears the power.runtime_error field
1256 spin_lock_irqsave(&dev->power.lock, flags); in __pm_runtime_set_status()
1262 if (dev->power.runtime_error || dev->power.disable_depth) in __pm_runtime_set_status()
1263 dev->power.disable_depth++; in __pm_runtime_set_status()
1267 spin_unlock_irqrestore(&dev->power.lock, flags); in __pm_runtime_set_status()
1288 spin_lock_irqsave(&dev->power.lock, flags); in __pm_runtime_set_status()
1290 if (dev->power.runtime_status == status || !parent) in __pm_runtime_set_status()
1294 atomic_add_unless(&parent->power.child_count, -1, 0); in __pm_runtime_set_status()
1295 notify_parent = !parent->power.ignore_children; in __pm_runtime_set_status()
1297 spin_lock_nested(&parent->power.lock, SINGLE_DEPTH_NESTING); in __pm_runtime_set_status()
1302 * 'power.ignore_children' flag unset. in __pm_runtime_set_status()
1304 if (!parent->power.disable_depth && in __pm_runtime_set_status()
1305 !parent->power.ignore_children && in __pm_runtime_set_status()
1306 parent->power.runtime_status != RPM_ACTIVE) { in __pm_runtime_set_status()
1311 } else if (dev->power.runtime_status == RPM_SUSPENDED) { in __pm_runtime_set_status()
1312 atomic_inc(&parent->power.child_count); in __pm_runtime_set_status()
1315 spin_unlock(&parent->power.lock); in __pm_runtime_set_status()
1326 dev->power.runtime_error = 0; in __pm_runtime_set_status()
1329 spin_unlock_irqrestore(&dev->power.lock, flags); in __pm_runtime_set_status()
1355 * Should be called under dev->power.lock with interrupts disabled.
1361 if (dev->power.request_pending) { in __pm_runtime_barrier()
1362 dev->power.request = RPM_REQ_NONE; in __pm_runtime_barrier()
1363 spin_unlock_irq(&dev->power.lock); in __pm_runtime_barrier()
1365 cancel_work_sync(&dev->power.work); in __pm_runtime_barrier()
1367 spin_lock_irq(&dev->power.lock); in __pm_runtime_barrier()
1368 dev->power.request_pending = false; in __pm_runtime_barrier()
1371 if (dev->power.runtime_status == RPM_SUSPENDING || in __pm_runtime_barrier()
1372 dev->power.runtime_status == RPM_RESUMING || in __pm_runtime_barrier()
1373 dev->power.idle_notification) { in __pm_runtime_barrier()
1378 prepare_to_wait(&dev->power.wait_queue, &wait, in __pm_runtime_barrier()
1380 if (dev->power.runtime_status != RPM_SUSPENDING in __pm_runtime_barrier()
1381 && dev->power.runtime_status != RPM_RESUMING in __pm_runtime_barrier()
1382 && !dev->power.idle_notification) in __pm_runtime_barrier()
1384 spin_unlock_irq(&dev->power.lock); in __pm_runtime_barrier()
1388 spin_lock_irq(&dev->power.lock); in __pm_runtime_barrier()
1390 finish_wait(&dev->power.wait_queue, &wait); in __pm_runtime_barrier()
1413 spin_lock_irq(&dev->power.lock); in pm_runtime_barrier()
1415 if (dev->power.request_pending in pm_runtime_barrier()
1416 && dev->power.request == RPM_REQ_RESUME) { in pm_runtime_barrier()
1423 spin_unlock_irq(&dev->power.lock); in pm_runtime_barrier()
1435 * Increment power.disable_depth for the device and if it was zero previously,
1441 * __pm_runtime_disable() is called and power.disable_depth is zero, the
1446 spin_lock_irq(&dev->power.lock); in __pm_runtime_disable()
1448 if (dev->power.disable_depth > 0) { in __pm_runtime_disable()
1449 dev->power.disable_depth++; in __pm_runtime_disable()
1458 if (check_resume && dev->power.request_pending && in __pm_runtime_disable()
1459 dev->power.request == RPM_REQ_RESUME) { in __pm_runtime_disable()
1474 if (!dev->power.disable_depth++) { in __pm_runtime_disable()
1476 dev->power.last_status = dev->power.runtime_status; in __pm_runtime_disable()
1480 spin_unlock_irq(&dev->power.lock); in __pm_runtime_disable()
1492 spin_lock_irqsave(&dev->power.lock, flags); in pm_runtime_enable()
1494 if (!dev->power.disable_depth) { in pm_runtime_enable()
1499 if (--dev->power.disable_depth > 0) in pm_runtime_enable()
1502 dev->power.last_status = RPM_INVALID; in pm_runtime_enable()
1503 dev->power.accounting_timestamp = ktime_get_mono_fast_ns(); in pm_runtime_enable()
1505 if (dev->power.runtime_status == RPM_SUSPENDED && in pm_runtime_enable()
1506 !dev->power.ignore_children && in pm_runtime_enable()
1507 atomic_read(&dev->power.child_count) > 0) in pm_runtime_enable()
1511 spin_unlock_irqrestore(&dev->power.lock, flags); in pm_runtime_enable()
1541 * Increase the device's usage count and clear its power.runtime_auto flag,
1547 spin_lock_irq(&dev->power.lock); in pm_runtime_forbid()
1548 if (!dev->power.runtime_auto) in pm_runtime_forbid()
1551 dev->power.runtime_auto = false; in pm_runtime_forbid()
1552 atomic_inc(&dev->power.usage_count); in pm_runtime_forbid()
1556 spin_unlock_irq(&dev->power.lock); in pm_runtime_forbid()
1564 * Decrease the device's usage count and set its power.runtime_auto flag.
1570 spin_lock_irq(&dev->power.lock); in pm_runtime_allow()
1571 if (dev->power.runtime_auto) in pm_runtime_allow()
1574 dev->power.runtime_auto = true; in pm_runtime_allow()
1582 spin_unlock_irq(&dev->power.lock); in pm_runtime_allow()
1590 * Set the power.no_callbacks flag, which tells the PM core that this
1591 * device is power-managed through its parent and has no runtime PM
1596 spin_lock_irq(&dev->power.lock); in pm_runtime_no_callbacks()
1597 dev->power.no_callbacks = 1; in pm_runtime_no_callbacks()
1598 spin_unlock_irq(&dev->power.lock); in pm_runtime_no_callbacks()
1608 * Set the power.irq_safe flag, which tells the PM core that the
1620 spin_lock_irq(&dev->power.lock); in pm_runtime_irq_safe()
1621 dev->power.irq_safe = 1; in pm_runtime_irq_safe()
1622 spin_unlock_irq(&dev->power.lock); in pm_runtime_irq_safe()
1635 * This function must be called under dev->power.lock with interrupts disabled.
1639 int delay = dev->power.autosuspend_delay; in update_autosuspend()
1642 if (dev->power.use_autosuspend && delay < 0) { in update_autosuspend()
1646 atomic_inc(&dev->power.usage_count); in update_autosuspend()
1658 atomic_dec(&dev->power.usage_count); in update_autosuspend()
1670 * Set the device's power.autosuspend_delay value. If it changes to negative
1671 * and the power.use_autosuspend flag is set, prevent runtime suspends. If it
1678 spin_lock_irq(&dev->power.lock); in pm_runtime_set_autosuspend_delay()
1679 old_delay = dev->power.autosuspend_delay; in pm_runtime_set_autosuspend_delay()
1680 old_use = dev->power.use_autosuspend; in pm_runtime_set_autosuspend_delay()
1681 dev->power.autosuspend_delay = delay; in pm_runtime_set_autosuspend_delay()
1683 spin_unlock_irq(&dev->power.lock); in pm_runtime_set_autosuspend_delay()
1692 * Set the device's power.use_autosuspend flag, and allow or prevent runtime
1699 spin_lock_irq(&dev->power.lock); in __pm_runtime_use_autosuspend()
1700 old_delay = dev->power.autosuspend_delay; in __pm_runtime_use_autosuspend()
1701 old_use = dev->power.use_autosuspend; in __pm_runtime_use_autosuspend()
1702 dev->power.use_autosuspend = use; in __pm_runtime_use_autosuspend()
1704 spin_unlock_irq(&dev->power.lock); in __pm_runtime_use_autosuspend()
1714 dev->power.runtime_status = RPM_SUSPENDED; in pm_runtime_init()
1715 dev->power.last_status = RPM_INVALID; in pm_runtime_init()
1716 dev->power.idle_notification = false; in pm_runtime_init()
1718 dev->power.disable_depth = 1; in pm_runtime_init()
1719 atomic_set(&dev->power.usage_count, 0); in pm_runtime_init()
1721 dev->power.runtime_error = 0; in pm_runtime_init()
1723 atomic_set(&dev->power.child_count, 0); in pm_runtime_init()
1725 dev->power.runtime_auto = true; in pm_runtime_init()
1727 dev->power.request_pending = false; in pm_runtime_init()
1728 dev->power.request = RPM_REQ_NONE; in pm_runtime_init()
1729 dev->power.deferred_resume = false; in pm_runtime_init()
1730 dev->power.needs_force_resume = 0; in pm_runtime_init()
1731 INIT_WORK(&dev->power.work, pm_runtime_work); in pm_runtime_init()
1733 dev->power.timer_expires = 0; in pm_runtime_init()
1734 hrtimer_init(&dev->power.suspend_timer, CLOCK_MONOTONIC, HRTIMER_MODE_ABS); in pm_runtime_init()
1735 dev->power.suspend_timer.function = pm_suspend_timer_fn; in pm_runtime_init()
1737 init_waitqueue_head(&dev->power.wait_queue); in pm_runtime_init()
1747 if (dev->power.runtime_status == RPM_ACTIVE) in pm_runtime_reinit()
1749 if (dev->power.irq_safe) { in pm_runtime_reinit()
1750 spin_lock_irq(&dev->power.lock); in pm_runtime_reinit()
1751 dev->power.irq_safe = 0; in pm_runtime_reinit()
1752 spin_unlock_irq(&dev->power.lock); in pm_runtime_reinit()
1813 spin_lock_irq(&dev->power.lock); in pm_runtime_new_link()
1814 dev->power.links_count++; in pm_runtime_new_link()
1815 spin_unlock_irq(&dev->power.lock); in pm_runtime_new_link()
1820 spin_lock_irq(&dev->power.lock); in pm_runtime_drop_link_count()
1821 WARN_ON(dev->power.links_count == 0); in pm_runtime_drop_link_count()
1822 dev->power.links_count--; in pm_runtime_drop_link_count()
1823 spin_unlock_irq(&dev->power.lock); in pm_runtime_drop_link_count()
1846 return atomic_read(&dev->power.usage_count) <= 1 && in pm_runtime_need_not_resume()
1847 (atomic_read(&dev->power.child_count) == 0 || in pm_runtime_need_not_resume()
1848 dev->power.ignore_children); in pm_runtime_need_not_resume()
1864 * sure the device is put into low power state and it should only be used during
1900 dev->power.needs_force_resume = 1; in pm_runtime_force_suspend()
1917 * into low power state by a call to pm_runtime_force_suspend(). Here we reverse
1918 * those actions and bring the device into full power, if it is expected to be
1929 if (!pm_runtime_status_suspended(dev) || !dev->power.needs_force_resume) in pm_runtime_force_resume()
1950 dev->power.needs_force_resume = 0; in pm_runtime_force_resume()