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()
467 if (dev->power.no_callbacks) in rpm_idle()
472 dev->power.request = RPM_REQ_IDLE; in rpm_idle()
473 if (!dev->power.request_pending) { in rpm_idle()
474 dev->power.request_pending = true; in rpm_idle()
475 queue_work(pm_wq, &dev->power.work); in rpm_idle()
481 dev->power.idle_notification = true; in rpm_idle()
488 dev->power.idle_notification = false; in rpm_idle()
489 wake_up_all(&dev->power.wait_queue); in rpm_idle()
508 if (dev->power.memalloc_noio) { in rpm_callback()
527 dev->power.runtime_error = retval; in rpm_callback()
545 * ignore_children of parent->power and irq_safe of dev->power are not set).
550 * This function must be called under dev->power.lock with interrupts disabled.
553 __releases(&dev->power.lock) __acquires(&dev->power.lock) in rpm_suspend()
567 if (dev->power.runtime_status == RPM_RESUMING && !(rpmflags & RPM_ASYNC)) in rpm_suspend()
574 && dev->power.runtime_status != RPM_SUSPENDING) { in rpm_suspend()
579 dev->power.request = RPM_REQ_NONE; in rpm_suspend()
588 if (!(dev->power.timer_expires && in rpm_suspend()
589 dev->power.timer_expires <= expires)) { in rpm_suspend()
594 u64 slack = (u64)READ_ONCE(dev->power.autosuspend_delay) * in rpm_suspend()
597 dev->power.timer_expires = expires; in rpm_suspend()
598 hrtimer_start_range_ns(&dev->power.suspend_timer, in rpm_suspend()
603 dev->power.timer_autosuspends = 1; in rpm_suspend()
611 if (dev->power.runtime_status == RPM_SUSPENDING) { in rpm_suspend()
619 if (dev->power.irq_safe) { in rpm_suspend()
620 spin_unlock(&dev->power.lock); in rpm_suspend()
624 spin_lock(&dev->power.lock); in rpm_suspend()
630 prepare_to_wait(&dev->power.wait_queue, &wait, in rpm_suspend()
632 if (dev->power.runtime_status != RPM_SUSPENDING) in rpm_suspend()
635 spin_unlock_irq(&dev->power.lock); in rpm_suspend()
639 spin_lock_irq(&dev->power.lock); in rpm_suspend()
641 finish_wait(&dev->power.wait_queue, &wait); in rpm_suspend()
645 if (dev->power.no_callbacks) in rpm_suspend()
650 dev->power.request = (rpmflags & RPM_AUTO) ? in rpm_suspend()
652 if (!dev->power.request_pending) { in rpm_suspend()
653 dev->power.request_pending = true; in rpm_suspend()
654 queue_work(pm_wq, &dev->power.work); in rpm_suspend()
674 atomic_add_unless(&parent->power.child_count, -1, 0); in rpm_suspend()
676 wake_up_all(&dev->power.wait_queue); in rpm_suspend()
678 if (dev->power.deferred_resume) { in rpm_suspend()
679 dev->power.deferred_resume = false; in rpm_suspend()
685 if (dev->power.irq_safe) in rpm_suspend()
689 if (parent && !parent->power.ignore_children) { in rpm_suspend()
690 spin_unlock(&dev->power.lock); in rpm_suspend()
692 spin_lock(&parent->power.lock); in rpm_suspend()
694 spin_unlock(&parent->power.lock); in rpm_suspend()
696 spin_lock(&dev->power.lock); in rpm_suspend()
699 if (dev->power.links_count > 0) { in rpm_suspend()
700 spin_unlock_irq(&dev->power.lock); in rpm_suspend()
704 spin_lock_irq(&dev->power.lock); in rpm_suspend()
715 dev->power.deferred_resume = false; in rpm_suspend()
716 wake_up_all(&dev->power.wait_queue); in rpm_suspend()
719 dev->power.runtime_error = 0; in rpm_suspend()
751 * This function must be called under dev->power.lock with interrupts disabled.
754 __releases(&dev->power.lock) __acquires(&dev->power.lock) in rpm_resume()
763 if (dev->power.runtime_error) in rpm_resume()
765 else if (dev->power.disable_depth == 1 && dev->power.is_suspended in rpm_resume()
766 && dev->power.runtime_status == RPM_ACTIVE) in rpm_resume()
768 else if (dev->power.disable_depth > 0) in rpm_resume()
779 dev->power.request = RPM_REQ_NONE; in rpm_resume()
780 if (!dev->power.timer_autosuspends) in rpm_resume()
783 if (dev->power.runtime_status == RPM_ACTIVE) { in rpm_resume()
788 if (dev->power.runtime_status == RPM_RESUMING in rpm_resume()
789 || dev->power.runtime_status == RPM_SUSPENDING) { in rpm_resume()
793 if (dev->power.runtime_status == RPM_SUSPENDING) in rpm_resume()
794 dev->power.deferred_resume = true; in rpm_resume()
800 if (dev->power.irq_safe) { in rpm_resume()
801 spin_unlock(&dev->power.lock); in rpm_resume()
805 spin_lock(&dev->power.lock); in rpm_resume()
811 prepare_to_wait(&dev->power.wait_queue, &wait, in rpm_resume()
813 if (dev->power.runtime_status != RPM_RESUMING in rpm_resume()
814 && dev->power.runtime_status != RPM_SUSPENDING) in rpm_resume()
817 spin_unlock_irq(&dev->power.lock); in rpm_resume()
821 spin_lock_irq(&dev->power.lock); in rpm_resume()
823 finish_wait(&dev->power.wait_queue, &wait); in rpm_resume()
829 * power.no_callbacks is set, because otherwise we don't know whether in rpm_resume()
832 if (dev->power.no_callbacks && !parent && dev->parent) { in rpm_resume()
833 spin_lock_nested(&dev->parent->power.lock, SINGLE_DEPTH_NESTING); in rpm_resume()
834 if (dev->parent->power.disable_depth > 0 in rpm_resume()
835 || dev->parent->power.ignore_children in rpm_resume()
836 || dev->parent->power.runtime_status == RPM_ACTIVE) { in rpm_resume()
837 atomic_inc(&dev->parent->power.child_count); in rpm_resume()
838 spin_unlock(&dev->parent->power.lock); in rpm_resume()
842 spin_unlock(&dev->parent->power.lock); in rpm_resume()
847 dev->power.request = RPM_REQ_RESUME; in rpm_resume()
848 if (!dev->power.request_pending) { in rpm_resume()
849 dev->power.request_pending = true; in rpm_resume()
850 queue_work(pm_wq, &dev->power.work); in rpm_resume()
863 if (dev->power.irq_safe) in rpm_resume()
865 spin_unlock(&dev->power.lock); in rpm_resume()
869 spin_lock(&parent->power.lock); in rpm_resume()
874 if (!parent->power.disable_depth in rpm_resume()
875 && !parent->power.ignore_children) { in rpm_resume()
877 if (parent->power.runtime_status != RPM_ACTIVE) in rpm_resume()
880 spin_unlock(&parent->power.lock); in rpm_resume()
882 spin_lock(&dev->power.lock); in rpm_resume()
889 if (dev->power.no_callbacks) in rpm_resume()
907 atomic_inc(&parent->power.child_count); in rpm_resume()
909 wake_up_all(&dev->power.wait_queue); in rpm_resume()
915 if (parent && !dev->power.irq_safe) { in rpm_resume()
916 spin_unlock_irq(&dev->power.lock); in rpm_resume()
920 spin_lock_irq(&dev->power.lock); in rpm_resume()
937 struct device *dev = container_of(work, struct device, power.work); in pm_runtime_work()
940 spin_lock_irq(&dev->power.lock); in pm_runtime_work()
942 if (!dev->power.request_pending) in pm_runtime_work()
945 req = dev->power.request; in pm_runtime_work()
946 dev->power.request = RPM_REQ_NONE; in pm_runtime_work()
947 dev->power.request_pending = false; in pm_runtime_work()
967 spin_unlock_irq(&dev->power.lock); in pm_runtime_work()
978 struct device *dev = container_of(timer, struct device, power.suspend_timer); in pm_suspend_timer_fn()
982 spin_lock_irqsave(&dev->power.lock, flags); in pm_suspend_timer_fn()
984 expires = dev->power.timer_expires; in pm_suspend_timer_fn()
990 dev->power.timer_expires = 0; in pm_suspend_timer_fn()
991 rpm_suspend(dev, dev->power.timer_autosuspends ? in pm_suspend_timer_fn()
995 spin_unlock_irqrestore(&dev->power.lock, flags); in pm_suspend_timer_fn()
1011 spin_lock_irqsave(&dev->power.lock, flags); in pm_schedule_suspend()
1026 dev->power.timer_expires = expires; in pm_schedule_suspend()
1027 dev->power.timer_autosuspends = 0; in pm_schedule_suspend()
1028 hrtimer_start(&dev->power.suspend_timer, expires, HRTIMER_MODE_ABS); in pm_schedule_suspend()
1031 spin_unlock_irqrestore(&dev->power.lock, flags); in pm_schedule_suspend()
1055 if (!atomic_dec_and_test(&dev->power.usage_count)) { in __pm_runtime_idle()
1061 might_sleep_if(!(rpmflags & RPM_ASYNC) && !dev->power.irq_safe); in __pm_runtime_idle()
1063 spin_lock_irqsave(&dev->power.lock, flags); in __pm_runtime_idle()
1065 spin_unlock_irqrestore(&dev->power.lock, flags); in __pm_runtime_idle()
1089 if (!atomic_dec_and_test(&dev->power.usage_count)) { in __pm_runtime_suspend()
1095 might_sleep_if(!(rpmflags & RPM_ASYNC) && !dev->power.irq_safe); in __pm_runtime_suspend()
1097 spin_lock_irqsave(&dev->power.lock, flags); in __pm_runtime_suspend()
1099 spin_unlock_irqrestore(&dev->power.lock, flags); in __pm_runtime_suspend()
1121 might_sleep_if(!(rpmflags & RPM_ASYNC) && !dev->power.irq_safe && in __pm_runtime_resume()
1122 dev->power.runtime_status != RPM_ACTIVE); in __pm_runtime_resume()
1125 atomic_inc(&dev->power.usage_count); in __pm_runtime_resume()
1127 spin_lock_irqsave(&dev->power.lock, flags); in __pm_runtime_resume()
1129 spin_unlock_irqrestore(&dev->power.lock, flags); in __pm_runtime_resume()
1162 spin_lock_irqsave(&dev->power.lock, flags); in pm_runtime_get_if_active()
1163 if (dev->power.disable_depth > 0) { in pm_runtime_get_if_active()
1165 } else if (dev->power.runtime_status != RPM_ACTIVE) { in pm_runtime_get_if_active()
1169 atomic_inc(&dev->power.usage_count); in pm_runtime_get_if_active()
1171 retval = atomic_inc_not_zero(&dev->power.usage_count); in pm_runtime_get_if_active()
1174 spin_unlock_irqrestore(&dev->power.lock, flags); in pm_runtime_get_if_active()
1185 * If runtime PM of the device is disabled or its power.runtime_error field is
1189 * parent's power.ignore_children flag is unset, the device's status cannot be
1192 * If successful, __pm_runtime_set_status() clears the power.runtime_error field
1213 spin_lock_irq(&dev->power.lock); in __pm_runtime_set_status()
1219 if (dev->power.runtime_error || dev->power.disable_depth) in __pm_runtime_set_status()
1220 dev->power.disable_depth++; in __pm_runtime_set_status()
1224 spin_unlock_irq(&dev->power.lock); in __pm_runtime_set_status()
1245 spin_lock_irq(&dev->power.lock); in __pm_runtime_set_status()
1247 if (dev->power.runtime_status == status || !parent) in __pm_runtime_set_status()
1251 atomic_add_unless(&parent->power.child_count, -1, 0); in __pm_runtime_set_status()
1252 notify_parent = !parent->power.ignore_children; in __pm_runtime_set_status()
1254 spin_lock_nested(&parent->power.lock, SINGLE_DEPTH_NESTING); in __pm_runtime_set_status()
1259 * 'power.ignore_children' flag unset. in __pm_runtime_set_status()
1261 if (!parent->power.disable_depth in __pm_runtime_set_status()
1262 && !parent->power.ignore_children in __pm_runtime_set_status()
1263 && parent->power.runtime_status != RPM_ACTIVE) { in __pm_runtime_set_status()
1268 } else if (dev->power.runtime_status == RPM_SUSPENDED) { in __pm_runtime_set_status()
1269 atomic_inc(&parent->power.child_count); in __pm_runtime_set_status()
1272 spin_unlock(&parent->power.lock); in __pm_runtime_set_status()
1283 dev->power.runtime_error = 0; in __pm_runtime_set_status()
1286 spin_unlock_irq(&dev->power.lock); in __pm_runtime_set_status()
1312 * Should be called under dev->power.lock with interrupts disabled.
1318 if (dev->power.request_pending) { in __pm_runtime_barrier()
1319 dev->power.request = RPM_REQ_NONE; in __pm_runtime_barrier()
1320 spin_unlock_irq(&dev->power.lock); in __pm_runtime_barrier()
1322 cancel_work_sync(&dev->power.work); in __pm_runtime_barrier()
1324 spin_lock_irq(&dev->power.lock); in __pm_runtime_barrier()
1325 dev->power.request_pending = false; in __pm_runtime_barrier()
1328 if (dev->power.runtime_status == RPM_SUSPENDING in __pm_runtime_barrier()
1329 || dev->power.runtime_status == RPM_RESUMING in __pm_runtime_barrier()
1330 || dev->power.idle_notification) { in __pm_runtime_barrier()
1335 prepare_to_wait(&dev->power.wait_queue, &wait, in __pm_runtime_barrier()
1337 if (dev->power.runtime_status != RPM_SUSPENDING in __pm_runtime_barrier()
1338 && dev->power.runtime_status != RPM_RESUMING in __pm_runtime_barrier()
1339 && !dev->power.idle_notification) in __pm_runtime_barrier()
1341 spin_unlock_irq(&dev->power.lock); in __pm_runtime_barrier()
1345 spin_lock_irq(&dev->power.lock); in __pm_runtime_barrier()
1347 finish_wait(&dev->power.wait_queue, &wait); in __pm_runtime_barrier()
1370 spin_lock_irq(&dev->power.lock); in pm_runtime_barrier()
1372 if (dev->power.request_pending in pm_runtime_barrier()
1373 && dev->power.request == RPM_REQ_RESUME) { in pm_runtime_barrier()
1380 spin_unlock_irq(&dev->power.lock); in pm_runtime_barrier()
1392 * Increment power.disable_depth for the device and if it was zero previously,
1398 * __pm_runtime_disable() is called and power.disable_depth is zero, the
1403 spin_lock_irq(&dev->power.lock); in __pm_runtime_disable()
1405 if (dev->power.disable_depth > 0) { in __pm_runtime_disable()
1406 dev->power.disable_depth++; in __pm_runtime_disable()
1415 if (check_resume && dev->power.request_pending in __pm_runtime_disable()
1416 && dev->power.request == RPM_REQ_RESUME) { in __pm_runtime_disable()
1431 if (!dev->power.disable_depth++) in __pm_runtime_disable()
1435 spin_unlock_irq(&dev->power.lock); in __pm_runtime_disable()
1447 spin_lock_irqsave(&dev->power.lock, flags); in pm_runtime_enable()
1449 if (dev->power.disable_depth > 0) { in pm_runtime_enable()
1450 dev->power.disable_depth--; in pm_runtime_enable()
1453 if (!dev->power.disable_depth) in pm_runtime_enable()
1454 dev->power.accounting_timestamp = ktime_get_mono_fast_ns(); in pm_runtime_enable()
1459 WARN(!dev->power.disable_depth && in pm_runtime_enable()
1460 dev->power.runtime_status == RPM_SUSPENDED && in pm_runtime_enable()
1461 !dev->power.ignore_children && in pm_runtime_enable()
1462 atomic_read(&dev->power.child_count) > 0, in pm_runtime_enable()
1466 spin_unlock_irqrestore(&dev->power.lock, flags); in pm_runtime_enable()
1474 * Increase the device's usage count and clear its power.runtime_auto flag,
1480 spin_lock_irq(&dev->power.lock); in pm_runtime_forbid()
1481 if (!dev->power.runtime_auto) in pm_runtime_forbid()
1484 dev->power.runtime_auto = false; in pm_runtime_forbid()
1485 atomic_inc(&dev->power.usage_count); in pm_runtime_forbid()
1489 spin_unlock_irq(&dev->power.lock); in pm_runtime_forbid()
1497 * Decrease the device's usage count and set its power.runtime_auto flag.
1501 spin_lock_irq(&dev->power.lock); in pm_runtime_allow()
1502 if (dev->power.runtime_auto) in pm_runtime_allow()
1505 dev->power.runtime_auto = true; in pm_runtime_allow()
1506 if (atomic_dec_and_test(&dev->power.usage_count)) in pm_runtime_allow()
1512 spin_unlock_irq(&dev->power.lock); in pm_runtime_allow()
1520 * Set the power.no_callbacks flag, which tells the PM core that this
1521 * device is power-managed through its parent and has no runtime PM
1526 spin_lock_irq(&dev->power.lock); in pm_runtime_no_callbacks()
1527 dev->power.no_callbacks = 1; in pm_runtime_no_callbacks()
1528 spin_unlock_irq(&dev->power.lock); in pm_runtime_no_callbacks()
1538 * Set the power.irq_safe flag, which tells the PM core that the
1549 spin_lock_irq(&dev->power.lock); in pm_runtime_irq_safe()
1550 dev->power.irq_safe = 1; in pm_runtime_irq_safe()
1551 spin_unlock_irq(&dev->power.lock); in pm_runtime_irq_safe()
1564 * This function must be called under dev->power.lock with interrupts disabled.
1568 int delay = dev->power.autosuspend_delay; in update_autosuspend()
1571 if (dev->power.use_autosuspend && delay < 0) { in update_autosuspend()
1575 atomic_inc(&dev->power.usage_count); in update_autosuspend()
1587 atomic_dec(&dev->power.usage_count); in update_autosuspend()
1599 * Set the device's power.autosuspend_delay value. If it changes to negative
1600 * and the power.use_autosuspend flag is set, prevent runtime suspends. If it
1607 spin_lock_irq(&dev->power.lock); in pm_runtime_set_autosuspend_delay()
1608 old_delay = dev->power.autosuspend_delay; in pm_runtime_set_autosuspend_delay()
1609 old_use = dev->power.use_autosuspend; in pm_runtime_set_autosuspend_delay()
1610 dev->power.autosuspend_delay = delay; in pm_runtime_set_autosuspend_delay()
1612 spin_unlock_irq(&dev->power.lock); in pm_runtime_set_autosuspend_delay()
1621 * Set the device's power.use_autosuspend flag, and allow or prevent runtime
1628 spin_lock_irq(&dev->power.lock); in __pm_runtime_use_autosuspend()
1629 old_delay = dev->power.autosuspend_delay; in __pm_runtime_use_autosuspend()
1630 old_use = dev->power.use_autosuspend; in __pm_runtime_use_autosuspend()
1631 dev->power.use_autosuspend = use; in __pm_runtime_use_autosuspend()
1633 spin_unlock_irq(&dev->power.lock); in __pm_runtime_use_autosuspend()
1643 dev->power.runtime_status = RPM_SUSPENDED; in pm_runtime_init()
1644 dev->power.idle_notification = false; in pm_runtime_init()
1646 dev->power.disable_depth = 1; in pm_runtime_init()
1647 atomic_set(&dev->power.usage_count, 0); in pm_runtime_init()
1649 dev->power.runtime_error = 0; in pm_runtime_init()
1651 atomic_set(&dev->power.child_count, 0); in pm_runtime_init()
1653 dev->power.runtime_auto = true; in pm_runtime_init()
1655 dev->power.request_pending = false; in pm_runtime_init()
1656 dev->power.request = RPM_REQ_NONE; in pm_runtime_init()
1657 dev->power.deferred_resume = false; in pm_runtime_init()
1658 dev->power.needs_force_resume = 0; in pm_runtime_init()
1659 INIT_WORK(&dev->power.work, pm_runtime_work); in pm_runtime_init()
1661 dev->power.timer_expires = 0; in pm_runtime_init()
1662 hrtimer_init(&dev->power.suspend_timer, CLOCK_MONOTONIC, HRTIMER_MODE_ABS); in pm_runtime_init()
1663 dev->power.suspend_timer.function = pm_suspend_timer_fn; in pm_runtime_init()
1665 init_waitqueue_head(&dev->power.wait_queue); in pm_runtime_init()
1675 if (dev->power.runtime_status == RPM_ACTIVE) in pm_runtime_reinit()
1677 if (dev->power.irq_safe) { in pm_runtime_reinit()
1678 spin_lock_irq(&dev->power.lock); in pm_runtime_reinit()
1679 dev->power.irq_safe = 0; in pm_runtime_reinit()
1680 spin_unlock_irq(&dev->power.lock); in pm_runtime_reinit()
1736 spin_lock_irqsave(&dev->power.lock, flags); in pm_runtime_put_suppliers()
1739 spin_unlock_irqrestore(&dev->power.lock, flags); in pm_runtime_put_suppliers()
1749 spin_lock_irq(&dev->power.lock); in pm_runtime_new_link()
1750 dev->power.links_count++; in pm_runtime_new_link()
1751 spin_unlock_irq(&dev->power.lock); in pm_runtime_new_link()
1756 spin_lock_irq(&dev->power.lock); in pm_runtime_drop_link_count()
1757 WARN_ON(dev->power.links_count == 0); in pm_runtime_drop_link_count()
1758 dev->power.links_count--; in pm_runtime_drop_link_count()
1759 spin_unlock_irq(&dev->power.lock); in pm_runtime_drop_link_count()
1782 return atomic_read(&dev->power.usage_count) <= 1 && in pm_runtime_need_not_resume()
1783 (atomic_read(&dev->power.child_count) == 0 || in pm_runtime_need_not_resume()
1784 dev->power.ignore_children); in pm_runtime_need_not_resume()
1800 * sure the device is put into low power state and it should only be used during
1829 dev->power.needs_force_resume = 1; in pm_runtime_force_suspend()
1845 * into low power state by a call to pm_runtime_force_suspend(). Here we reverse
1846 * those actions and bring the device into full power, if it is expected to be
1857 if (!pm_runtime_status_suspended(dev) || !dev->power.needs_force_resume) in pm_runtime_force_resume()
1876 dev->power.needs_force_resume = 0; in pm_runtime_force_resume()