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()
346 __releases(&dev->power.lock) __acquires(&dev->power.lock) in __rpm_callback()
349 bool use_links = dev->power.links_count > 0; in __rpm_callback()
351 if (dev->power.irq_safe) { in __rpm_callback()
352 spin_unlock(&dev->power.lock); in __rpm_callback()
354 spin_unlock_irq(&dev->power.lock); in __rpm_callback()
363 if (use_links && dev->power.runtime_status == RPM_RESUMING) { in __rpm_callback()
378 if (dev->power.irq_safe) { in __rpm_callback()
379 spin_lock(&dev->power.lock); in __rpm_callback()
389 && ((dev->power.runtime_status == RPM_SUSPENDING && !retval) in __rpm_callback()
390 || (dev->power.runtime_status == RPM_RESUMING && retval))) { in __rpm_callback()
399 spin_lock_irq(&dev->power.lock); in __rpm_callback()
416 * This function must be called under dev->power.lock with interrupts disabled.
429 else if (dev->power.runtime_status != RPM_ACTIVE) in rpm_idle()
436 else if (dev->power.request_pending && in rpm_idle()
437 dev->power.request > RPM_REQ_IDLE) in rpm_idle()
441 else if (dev->power.idle_notification) in rpm_idle()
447 dev->power.request = RPM_REQ_NONE; in rpm_idle()
449 if (dev->power.no_callbacks) in rpm_idle()
454 dev->power.request = RPM_REQ_IDLE; in rpm_idle()
455 if (!dev->power.request_pending) { in rpm_idle()
456 dev->power.request_pending = true; in rpm_idle()
457 queue_work(pm_wq, &dev->power.work); in rpm_idle()
463 dev->power.idle_notification = true; in rpm_idle()
470 dev->power.idle_notification = false; in rpm_idle()
471 wake_up_all(&dev->power.wait_queue); in rpm_idle()
490 if (dev->power.memalloc_noio) { in rpm_callback()
509 dev->power.runtime_error = retval; in rpm_callback()
527 * ignore_children of parent->power and irq_safe of dev->power are not set).
532 * This function must be called under dev->power.lock with interrupts disabled.
535 __releases(&dev->power.lock) __acquires(&dev->power.lock) in rpm_suspend()
549 if (dev->power.runtime_status == RPM_RESUMING && !(rpmflags & RPM_ASYNC)) in rpm_suspend()
556 && dev->power.runtime_status != RPM_SUSPENDING) { in rpm_suspend()
561 dev->power.request = RPM_REQ_NONE; in rpm_suspend()
570 if (!(dev->power.timer_expires && in rpm_suspend()
571 dev->power.timer_expires <= expires)) { in rpm_suspend()
576 u64 slack = (u64)READ_ONCE(dev->power.autosuspend_delay) * in rpm_suspend()
579 dev->power.timer_expires = expires; in rpm_suspend()
580 hrtimer_start_range_ns(&dev->power.suspend_timer, in rpm_suspend()
585 dev->power.timer_autosuspends = 1; in rpm_suspend()
593 if (dev->power.runtime_status == RPM_SUSPENDING) { in rpm_suspend()
601 if (dev->power.irq_safe) { in rpm_suspend()
602 spin_unlock(&dev->power.lock); in rpm_suspend()
606 spin_lock(&dev->power.lock); in rpm_suspend()
612 prepare_to_wait(&dev->power.wait_queue, &wait, in rpm_suspend()
614 if (dev->power.runtime_status != RPM_SUSPENDING) in rpm_suspend()
617 spin_unlock_irq(&dev->power.lock); in rpm_suspend()
621 spin_lock_irq(&dev->power.lock); in rpm_suspend()
623 finish_wait(&dev->power.wait_queue, &wait); in rpm_suspend()
627 if (dev->power.no_callbacks) in rpm_suspend()
632 dev->power.request = (rpmflags & RPM_AUTO) ? in rpm_suspend()
634 if (!dev->power.request_pending) { in rpm_suspend()
635 dev->power.request_pending = true; in rpm_suspend()
636 queue_work(pm_wq, &dev->power.work); in rpm_suspend()
656 atomic_add_unless(&parent->power.child_count, -1, 0); in rpm_suspend()
658 wake_up_all(&dev->power.wait_queue); in rpm_suspend()
660 if (dev->power.deferred_resume) { in rpm_suspend()
661 dev->power.deferred_resume = false; in rpm_suspend()
667 if (dev->power.irq_safe) in rpm_suspend()
671 if (parent && !parent->power.ignore_children) { in rpm_suspend()
672 spin_unlock(&dev->power.lock); in rpm_suspend()
674 spin_lock(&parent->power.lock); in rpm_suspend()
676 spin_unlock(&parent->power.lock); in rpm_suspend()
678 spin_lock(&dev->power.lock); in rpm_suspend()
681 if (dev->power.links_count > 0) { in rpm_suspend()
682 spin_unlock_irq(&dev->power.lock); in rpm_suspend()
686 spin_lock_irq(&dev->power.lock); in rpm_suspend()
697 dev->power.deferred_resume = false; in rpm_suspend()
698 wake_up_all(&dev->power.wait_queue); in rpm_suspend()
701 dev->power.runtime_error = 0; in rpm_suspend()
733 * This function must be called under dev->power.lock with interrupts disabled.
736 __releases(&dev->power.lock) __acquires(&dev->power.lock) in rpm_resume()
745 if (dev->power.runtime_error) in rpm_resume()
747 else if (dev->power.disable_depth == 1 && dev->power.is_suspended in rpm_resume()
748 && dev->power.runtime_status == RPM_ACTIVE) in rpm_resume()
750 else if (dev->power.disable_depth > 0) in rpm_resume()
761 dev->power.request = RPM_REQ_NONE; in rpm_resume()
762 if (!dev->power.timer_autosuspends) in rpm_resume()
765 if (dev->power.runtime_status == RPM_ACTIVE) { in rpm_resume()
770 if (dev->power.runtime_status == RPM_RESUMING in rpm_resume()
771 || dev->power.runtime_status == RPM_SUSPENDING) { in rpm_resume()
775 if (dev->power.runtime_status == RPM_SUSPENDING) in rpm_resume()
776 dev->power.deferred_resume = true; in rpm_resume()
782 if (dev->power.irq_safe) { in rpm_resume()
783 spin_unlock(&dev->power.lock); in rpm_resume()
787 spin_lock(&dev->power.lock); in rpm_resume()
793 prepare_to_wait(&dev->power.wait_queue, &wait, in rpm_resume()
795 if (dev->power.runtime_status != RPM_RESUMING in rpm_resume()
796 && dev->power.runtime_status != RPM_SUSPENDING) in rpm_resume()
799 spin_unlock_irq(&dev->power.lock); in rpm_resume()
803 spin_lock_irq(&dev->power.lock); in rpm_resume()
805 finish_wait(&dev->power.wait_queue, &wait); in rpm_resume()
811 * power.no_callbacks is set, because otherwise we don't know whether in rpm_resume()
814 if (dev->power.no_callbacks && !parent && dev->parent) { in rpm_resume()
815 spin_lock_nested(&dev->parent->power.lock, SINGLE_DEPTH_NESTING); in rpm_resume()
816 if (dev->parent->power.disable_depth > 0 in rpm_resume()
817 || dev->parent->power.ignore_children in rpm_resume()
818 || dev->parent->power.runtime_status == RPM_ACTIVE) { in rpm_resume()
819 atomic_inc(&dev->parent->power.child_count); in rpm_resume()
820 spin_unlock(&dev->parent->power.lock); in rpm_resume()
824 spin_unlock(&dev->parent->power.lock); in rpm_resume()
829 dev->power.request = RPM_REQ_RESUME; in rpm_resume()
830 if (!dev->power.request_pending) { in rpm_resume()
831 dev->power.request_pending = true; in rpm_resume()
832 queue_work(pm_wq, &dev->power.work); in rpm_resume()
845 if (dev->power.irq_safe) in rpm_resume()
847 spin_unlock(&dev->power.lock); in rpm_resume()
851 spin_lock(&parent->power.lock); in rpm_resume()
856 if (!parent->power.disable_depth in rpm_resume()
857 && !parent->power.ignore_children) { in rpm_resume()
859 if (parent->power.runtime_status != RPM_ACTIVE) in rpm_resume()
862 spin_unlock(&parent->power.lock); in rpm_resume()
864 spin_lock(&dev->power.lock); in rpm_resume()
871 if (dev->power.no_callbacks) in rpm_resume()
889 atomic_inc(&parent->power.child_count); in rpm_resume()
891 wake_up_all(&dev->power.wait_queue); in rpm_resume()
897 if (parent && !dev->power.irq_safe) { in rpm_resume()
898 spin_unlock_irq(&dev->power.lock); in rpm_resume()
902 spin_lock_irq(&dev->power.lock); in rpm_resume()
919 struct device *dev = container_of(work, struct device, power.work); in pm_runtime_work()
922 spin_lock_irq(&dev->power.lock); in pm_runtime_work()
924 if (!dev->power.request_pending) in pm_runtime_work()
927 req = dev->power.request; in pm_runtime_work()
928 dev->power.request = RPM_REQ_NONE; in pm_runtime_work()
929 dev->power.request_pending = false; in pm_runtime_work()
949 spin_unlock_irq(&dev->power.lock); in pm_runtime_work()
960 struct device *dev = container_of(timer, struct device, power.suspend_timer); in pm_suspend_timer_fn()
964 spin_lock_irqsave(&dev->power.lock, flags); in pm_suspend_timer_fn()
966 expires = dev->power.timer_expires; in pm_suspend_timer_fn()
972 dev->power.timer_expires = 0; in pm_suspend_timer_fn()
973 rpm_suspend(dev, dev->power.timer_autosuspends ? in pm_suspend_timer_fn()
977 spin_unlock_irqrestore(&dev->power.lock, flags); in pm_suspend_timer_fn()
993 spin_lock_irqsave(&dev->power.lock, flags); in pm_schedule_suspend()
1008 dev->power.timer_expires = expires; in pm_schedule_suspend()
1009 dev->power.timer_autosuspends = 0; in pm_schedule_suspend()
1010 hrtimer_start(&dev->power.suspend_timer, expires, HRTIMER_MODE_ABS); in pm_schedule_suspend()
1013 spin_unlock_irqrestore(&dev->power.lock, flags); in pm_schedule_suspend()
1037 if (!atomic_dec_and_test(&dev->power.usage_count)) { in __pm_runtime_idle()
1043 might_sleep_if(!(rpmflags & RPM_ASYNC) && !dev->power.irq_safe); in __pm_runtime_idle()
1045 spin_lock_irqsave(&dev->power.lock, flags); in __pm_runtime_idle()
1047 spin_unlock_irqrestore(&dev->power.lock, flags); in __pm_runtime_idle()
1071 if (!atomic_dec_and_test(&dev->power.usage_count)) { in __pm_runtime_suspend()
1077 might_sleep_if(!(rpmflags & RPM_ASYNC) && !dev->power.irq_safe); in __pm_runtime_suspend()
1079 spin_lock_irqsave(&dev->power.lock, flags); in __pm_runtime_suspend()
1081 spin_unlock_irqrestore(&dev->power.lock, flags); in __pm_runtime_suspend()
1103 might_sleep_if(!(rpmflags & RPM_ASYNC) && !dev->power.irq_safe && in __pm_runtime_resume()
1104 dev->power.runtime_status != RPM_ACTIVE); in __pm_runtime_resume()
1107 atomic_inc(&dev->power.usage_count); in __pm_runtime_resume()
1109 spin_lock_irqsave(&dev->power.lock, flags); in __pm_runtime_resume()
1111 spin_unlock_irqrestore(&dev->power.lock, flags); in __pm_runtime_resume()
1144 spin_lock_irqsave(&dev->power.lock, flags); in pm_runtime_get_if_active()
1145 if (dev->power.disable_depth > 0) { in pm_runtime_get_if_active()
1147 } else if (dev->power.runtime_status != RPM_ACTIVE) { in pm_runtime_get_if_active()
1151 atomic_inc(&dev->power.usage_count); in pm_runtime_get_if_active()
1153 retval = atomic_inc_not_zero(&dev->power.usage_count); in pm_runtime_get_if_active()
1156 spin_unlock_irqrestore(&dev->power.lock, flags); in pm_runtime_get_if_active()
1167 * If runtime PM of the device is disabled or its power.runtime_error field is
1171 * parent's power.ignore_children flag is unset, the device's status cannot be
1174 * If successful, __pm_runtime_set_status() clears the power.runtime_error field
1195 spin_lock_irq(&dev->power.lock); in __pm_runtime_set_status()
1201 if (dev->power.runtime_error || dev->power.disable_depth) in __pm_runtime_set_status()
1202 dev->power.disable_depth++; in __pm_runtime_set_status()
1206 spin_unlock_irq(&dev->power.lock); in __pm_runtime_set_status()
1227 spin_lock_irq(&dev->power.lock); in __pm_runtime_set_status()
1229 if (dev->power.runtime_status == status || !parent) in __pm_runtime_set_status()
1233 atomic_add_unless(&parent->power.child_count, -1, 0); in __pm_runtime_set_status()
1234 notify_parent = !parent->power.ignore_children; in __pm_runtime_set_status()
1236 spin_lock_nested(&parent->power.lock, SINGLE_DEPTH_NESTING); in __pm_runtime_set_status()
1241 * 'power.ignore_children' flag unset. in __pm_runtime_set_status()
1243 if (!parent->power.disable_depth in __pm_runtime_set_status()
1244 && !parent->power.ignore_children in __pm_runtime_set_status()
1245 && parent->power.runtime_status != RPM_ACTIVE) { in __pm_runtime_set_status()
1250 } else if (dev->power.runtime_status == RPM_SUSPENDED) { in __pm_runtime_set_status()
1251 atomic_inc(&parent->power.child_count); in __pm_runtime_set_status()
1254 spin_unlock(&parent->power.lock); in __pm_runtime_set_status()
1265 dev->power.runtime_error = 0; in __pm_runtime_set_status()
1268 spin_unlock_irq(&dev->power.lock); in __pm_runtime_set_status()
1294 * Should be called under dev->power.lock with interrupts disabled.
1300 if (dev->power.request_pending) { in __pm_runtime_barrier()
1301 dev->power.request = RPM_REQ_NONE; in __pm_runtime_barrier()
1302 spin_unlock_irq(&dev->power.lock); in __pm_runtime_barrier()
1304 cancel_work_sync(&dev->power.work); in __pm_runtime_barrier()
1306 spin_lock_irq(&dev->power.lock); in __pm_runtime_barrier()
1307 dev->power.request_pending = false; in __pm_runtime_barrier()
1310 if (dev->power.runtime_status == RPM_SUSPENDING in __pm_runtime_barrier()
1311 || dev->power.runtime_status == RPM_RESUMING in __pm_runtime_barrier()
1312 || dev->power.idle_notification) { in __pm_runtime_barrier()
1317 prepare_to_wait(&dev->power.wait_queue, &wait, in __pm_runtime_barrier()
1319 if (dev->power.runtime_status != RPM_SUSPENDING in __pm_runtime_barrier()
1320 && dev->power.runtime_status != RPM_RESUMING in __pm_runtime_barrier()
1321 && !dev->power.idle_notification) in __pm_runtime_barrier()
1323 spin_unlock_irq(&dev->power.lock); in __pm_runtime_barrier()
1327 spin_lock_irq(&dev->power.lock); in __pm_runtime_barrier()
1329 finish_wait(&dev->power.wait_queue, &wait); in __pm_runtime_barrier()
1352 spin_lock_irq(&dev->power.lock); in pm_runtime_barrier()
1354 if (dev->power.request_pending in pm_runtime_barrier()
1355 && dev->power.request == RPM_REQ_RESUME) { in pm_runtime_barrier()
1362 spin_unlock_irq(&dev->power.lock); in pm_runtime_barrier()
1374 * Increment power.disable_depth for the device and if it was zero previously,
1380 * __pm_runtime_disable() is called and power.disable_depth is zero, the
1385 spin_lock_irq(&dev->power.lock); in __pm_runtime_disable()
1387 if (dev->power.disable_depth > 0) { in __pm_runtime_disable()
1388 dev->power.disable_depth++; in __pm_runtime_disable()
1397 if (check_resume && dev->power.request_pending in __pm_runtime_disable()
1398 && dev->power.request == RPM_REQ_RESUME) { in __pm_runtime_disable()
1413 if (!dev->power.disable_depth++) in __pm_runtime_disable()
1417 spin_unlock_irq(&dev->power.lock); in __pm_runtime_disable()
1429 spin_lock_irqsave(&dev->power.lock, flags); in pm_runtime_enable()
1431 if (dev->power.disable_depth > 0) { in pm_runtime_enable()
1432 dev->power.disable_depth--; in pm_runtime_enable()
1435 if (!dev->power.disable_depth) in pm_runtime_enable()
1436 dev->power.accounting_timestamp = ktime_get_mono_fast_ns(); in pm_runtime_enable()
1441 WARN(!dev->power.disable_depth && in pm_runtime_enable()
1442 dev->power.runtime_status == RPM_SUSPENDED && in pm_runtime_enable()
1443 !dev->power.ignore_children && in pm_runtime_enable()
1444 atomic_read(&dev->power.child_count) > 0, in pm_runtime_enable()
1448 spin_unlock_irqrestore(&dev->power.lock, flags); in pm_runtime_enable()
1456 * Increase the device's usage count and clear its power.runtime_auto flag,
1462 spin_lock_irq(&dev->power.lock); in pm_runtime_forbid()
1463 if (!dev->power.runtime_auto) in pm_runtime_forbid()
1466 dev->power.runtime_auto = false; in pm_runtime_forbid()
1467 atomic_inc(&dev->power.usage_count); in pm_runtime_forbid()
1471 spin_unlock_irq(&dev->power.lock); in pm_runtime_forbid()
1479 * Decrease the device's usage count and set its power.runtime_auto flag.
1483 spin_lock_irq(&dev->power.lock); in pm_runtime_allow()
1484 if (dev->power.runtime_auto) in pm_runtime_allow()
1487 dev->power.runtime_auto = true; in pm_runtime_allow()
1488 if (atomic_dec_and_test(&dev->power.usage_count)) in pm_runtime_allow()
1494 spin_unlock_irq(&dev->power.lock); in pm_runtime_allow()
1502 * Set the power.no_callbacks flag, which tells the PM core that this
1503 * device is power-managed through its parent and has no runtime PM
1508 spin_lock_irq(&dev->power.lock); in pm_runtime_no_callbacks()
1509 dev->power.no_callbacks = 1; in pm_runtime_no_callbacks()
1510 spin_unlock_irq(&dev->power.lock); in pm_runtime_no_callbacks()
1520 * Set the power.irq_safe flag, which tells the PM core that the
1531 spin_lock_irq(&dev->power.lock); in pm_runtime_irq_safe()
1532 dev->power.irq_safe = 1; in pm_runtime_irq_safe()
1533 spin_unlock_irq(&dev->power.lock); in pm_runtime_irq_safe()
1546 * This function must be called under dev->power.lock with interrupts disabled.
1550 int delay = dev->power.autosuspend_delay; in update_autosuspend()
1553 if (dev->power.use_autosuspend && delay < 0) { in update_autosuspend()
1557 atomic_inc(&dev->power.usage_count); in update_autosuspend()
1569 atomic_dec(&dev->power.usage_count); in update_autosuspend()
1581 * Set the device's power.autosuspend_delay value. If it changes to negative
1582 * and the power.use_autosuspend flag is set, prevent runtime suspends. If it
1589 spin_lock_irq(&dev->power.lock); in pm_runtime_set_autosuspend_delay()
1590 old_delay = dev->power.autosuspend_delay; in pm_runtime_set_autosuspend_delay()
1591 old_use = dev->power.use_autosuspend; in pm_runtime_set_autosuspend_delay()
1592 dev->power.autosuspend_delay = delay; in pm_runtime_set_autosuspend_delay()
1594 spin_unlock_irq(&dev->power.lock); in pm_runtime_set_autosuspend_delay()
1603 * Set the device's power.use_autosuspend flag, and allow or prevent runtime
1610 spin_lock_irq(&dev->power.lock); in __pm_runtime_use_autosuspend()
1611 old_delay = dev->power.autosuspend_delay; in __pm_runtime_use_autosuspend()
1612 old_use = dev->power.use_autosuspend; in __pm_runtime_use_autosuspend()
1613 dev->power.use_autosuspend = use; in __pm_runtime_use_autosuspend()
1615 spin_unlock_irq(&dev->power.lock); in __pm_runtime_use_autosuspend()
1625 dev->power.runtime_status = RPM_SUSPENDED; in pm_runtime_init()
1626 dev->power.idle_notification = false; in pm_runtime_init()
1628 dev->power.disable_depth = 1; in pm_runtime_init()
1629 atomic_set(&dev->power.usage_count, 0); in pm_runtime_init()
1631 dev->power.runtime_error = 0; in pm_runtime_init()
1633 atomic_set(&dev->power.child_count, 0); in pm_runtime_init()
1635 dev->power.runtime_auto = true; in pm_runtime_init()
1637 dev->power.request_pending = false; in pm_runtime_init()
1638 dev->power.request = RPM_REQ_NONE; in pm_runtime_init()
1639 dev->power.deferred_resume = false; in pm_runtime_init()
1640 dev->power.needs_force_resume = 0; in pm_runtime_init()
1641 INIT_WORK(&dev->power.work, pm_runtime_work); in pm_runtime_init()
1643 dev->power.timer_expires = 0; in pm_runtime_init()
1644 hrtimer_init(&dev->power.suspend_timer, CLOCK_MONOTONIC, HRTIMER_MODE_ABS); in pm_runtime_init()
1645 dev->power.suspend_timer.function = pm_suspend_timer_fn; in pm_runtime_init()
1647 init_waitqueue_head(&dev->power.wait_queue); in pm_runtime_init()
1657 if (dev->power.runtime_status == RPM_ACTIVE) in pm_runtime_reinit()
1659 if (dev->power.irq_safe) { in pm_runtime_reinit()
1660 spin_lock_irq(&dev->power.lock); in pm_runtime_reinit()
1661 dev->power.irq_safe = 0; in pm_runtime_reinit()
1662 spin_unlock_irq(&dev->power.lock); in pm_runtime_reinit()
1718 spin_lock_irqsave(&dev->power.lock, flags); in pm_runtime_put_suppliers()
1721 spin_unlock_irqrestore(&dev->power.lock, flags); in pm_runtime_put_suppliers()
1731 spin_lock_irq(&dev->power.lock); in pm_runtime_new_link()
1732 dev->power.links_count++; in pm_runtime_new_link()
1733 spin_unlock_irq(&dev->power.lock); in pm_runtime_new_link()
1738 spin_lock_irq(&dev->power.lock); in pm_runtime_drop_link_count()
1739 WARN_ON(dev->power.links_count == 0); in pm_runtime_drop_link_count()
1740 dev->power.links_count--; in pm_runtime_drop_link_count()
1741 spin_unlock_irq(&dev->power.lock); in pm_runtime_drop_link_count()
1765 return atomic_read(&dev->power.usage_count) <= 1 && in pm_runtime_need_not_resume()
1766 (atomic_read(&dev->power.child_count) == 0 || in pm_runtime_need_not_resume()
1767 dev->power.ignore_children); in pm_runtime_need_not_resume()
1783 * sure the device is put into low power state and it should only be used during
1812 dev->power.needs_force_resume = 1; in pm_runtime_force_suspend()
1828 * into low power state by a call to pm_runtime_force_suspend(). Here we reverse
1829 * those actions and bring the device into full power, if it is expected to be
1840 if (!pm_runtime_status_suspended(dev) || !dev->power.needs_force_resume) in pm_runtime_force_resume()
1859 dev->power.needs_force_resume = 0; in pm_runtime_force_resume()