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)) 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()
397 if (dev->power.irq_safe) { in __rpm_callback()
398 spin_lock(&dev->power.lock); in __rpm_callback()
408 && ((dev->power.runtime_status == RPM_SUSPENDING && !retval) in __rpm_callback()
409 || (dev->power.runtime_status == RPM_RESUMING && retval))) { in __rpm_callback()
418 spin_lock_irq(&dev->power.lock); in __rpm_callback()
435 * This function must be called under dev->power.lock with interrupts disabled.
448 else if (dev->power.runtime_status != RPM_ACTIVE) in rpm_idle()
455 else if (dev->power.request_pending && in rpm_idle()
456 dev->power.request > RPM_REQ_IDLE) in rpm_idle()
460 else if (dev->power.idle_notification) in rpm_idle()
466 dev->power.request = RPM_REQ_NONE; in rpm_idle()
471 if (!callback || dev->power.no_callbacks) in rpm_idle()
476 dev->power.request = RPM_REQ_IDLE; in rpm_idle()
477 if (!dev->power.request_pending) { in rpm_idle()
478 dev->power.request_pending = true; in rpm_idle()
479 queue_work(pm_wq, &dev->power.work); in rpm_idle()
485 dev->power.idle_notification = true; in rpm_idle()
489 dev->power.idle_notification = false; in rpm_idle()
490 wake_up_all(&dev->power.wait_queue); in rpm_idle()
506 if (dev->power.memalloc_noio) { in rpm_callback()
525 dev->power.runtime_error = retval; in rpm_callback()
543 * ignore_children of parent->power and irq_safe of dev->power are not set).
548 * This function must be called under dev->power.lock with interrupts disabled.
551 __releases(&dev->power.lock) __acquires(&dev->power.lock) in rpm_suspend()
565 if (dev->power.runtime_status == RPM_RESUMING && !(rpmflags & RPM_ASYNC)) in rpm_suspend()
572 && dev->power.runtime_status != RPM_SUSPENDING) { in rpm_suspend()
577 dev->power.request = RPM_REQ_NONE; in rpm_suspend()
586 if (!(dev->power.timer_expires && in rpm_suspend()
587 dev->power.timer_expires <= expires)) { in rpm_suspend()
592 u64 slack = (u64)READ_ONCE(dev->power.autosuspend_delay) * in rpm_suspend()
595 dev->power.timer_expires = expires; in rpm_suspend()
596 hrtimer_start_range_ns(&dev->power.suspend_timer, in rpm_suspend()
601 dev->power.timer_autosuspends = 1; in rpm_suspend()
609 if (dev->power.runtime_status == RPM_SUSPENDING) { in rpm_suspend()
617 if (dev->power.irq_safe) { in rpm_suspend()
618 spin_unlock(&dev->power.lock); in rpm_suspend()
622 spin_lock(&dev->power.lock); in rpm_suspend()
628 prepare_to_wait(&dev->power.wait_queue, &wait, in rpm_suspend()
630 if (dev->power.runtime_status != RPM_SUSPENDING) in rpm_suspend()
633 spin_unlock_irq(&dev->power.lock); in rpm_suspend()
637 spin_lock_irq(&dev->power.lock); in rpm_suspend()
639 finish_wait(&dev->power.wait_queue, &wait); in rpm_suspend()
643 if (dev->power.no_callbacks) in rpm_suspend()
648 dev->power.request = (rpmflags & RPM_AUTO) ? in rpm_suspend()
650 if (!dev->power.request_pending) { in rpm_suspend()
651 dev->power.request_pending = true; in rpm_suspend()
652 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 > 0) { in rpm_resume()
766 if (dev->power.runtime_status == RPM_ACTIVE && in rpm_resume()
767 dev->power.last_status == RPM_ACTIVE) in rpm_resume()
781 dev->power.request = RPM_REQ_NONE; in rpm_resume()
782 if (!dev->power.timer_autosuspends) in rpm_resume()
785 if (dev->power.runtime_status == RPM_ACTIVE) { in rpm_resume()
790 if (dev->power.runtime_status == RPM_RESUMING in rpm_resume()
791 || dev->power.runtime_status == RPM_SUSPENDING) { in rpm_resume()
795 if (dev->power.runtime_status == RPM_SUSPENDING) { in rpm_resume()
796 dev->power.deferred_resume = true; in rpm_resume()
805 if (dev->power.irq_safe) { in rpm_resume()
806 spin_unlock(&dev->power.lock); in rpm_resume()
810 spin_lock(&dev->power.lock); in rpm_resume()
816 prepare_to_wait(&dev->power.wait_queue, &wait, in rpm_resume()
818 if (dev->power.runtime_status != RPM_RESUMING in rpm_resume()
819 && dev->power.runtime_status != RPM_SUSPENDING) in rpm_resume()
822 spin_unlock_irq(&dev->power.lock); in rpm_resume()
826 spin_lock_irq(&dev->power.lock); in rpm_resume()
828 finish_wait(&dev->power.wait_queue, &wait); in rpm_resume()
834 * power.no_callbacks is set, because otherwise we don't know whether in rpm_resume()
837 if (dev->power.no_callbacks && !parent && dev->parent) { in rpm_resume()
838 spin_lock_nested(&dev->parent->power.lock, SINGLE_DEPTH_NESTING); in rpm_resume()
839 if (dev->parent->power.disable_depth > 0 in rpm_resume()
840 || dev->parent->power.ignore_children in rpm_resume()
841 || dev->parent->power.runtime_status == RPM_ACTIVE) { in rpm_resume()
842 atomic_inc(&dev->parent->power.child_count); in rpm_resume()
843 spin_unlock(&dev->parent->power.lock); in rpm_resume()
847 spin_unlock(&dev->parent->power.lock); in rpm_resume()
852 dev->power.request = RPM_REQ_RESUME; in rpm_resume()
853 if (!dev->power.request_pending) { in rpm_resume()
854 dev->power.request_pending = true; in rpm_resume()
855 queue_work(pm_wq, &dev->power.work); in rpm_resume()
868 if (dev->power.irq_safe) in rpm_resume()
870 spin_unlock(&dev->power.lock); in rpm_resume()
874 spin_lock(&parent->power.lock); in rpm_resume()
879 if (!parent->power.disable_depth in rpm_resume()
880 && !parent->power.ignore_children) { in rpm_resume()
882 if (parent->power.runtime_status != RPM_ACTIVE) in rpm_resume()
885 spin_unlock(&parent->power.lock); in rpm_resume()
887 spin_lock(&dev->power.lock); in rpm_resume()
894 if (dev->power.no_callbacks) in rpm_resume()
912 atomic_inc(&parent->power.child_count); in rpm_resume()
914 wake_up_all(&dev->power.wait_queue); in rpm_resume()
920 if (parent && !dev->power.irq_safe) { in rpm_resume()
921 spin_unlock_irq(&dev->power.lock); in rpm_resume()
925 spin_lock_irq(&dev->power.lock); in rpm_resume()
942 struct device *dev = container_of(work, struct device, power.work); in pm_runtime_work()
945 spin_lock_irq(&dev->power.lock); in pm_runtime_work()
947 if (!dev->power.request_pending) in pm_runtime_work()
950 req = dev->power.request; in pm_runtime_work()
951 dev->power.request = RPM_REQ_NONE; in pm_runtime_work()
952 dev->power.request_pending = false; in pm_runtime_work()
972 spin_unlock_irq(&dev->power.lock); in pm_runtime_work()
983 struct device *dev = container_of(timer, struct device, power.suspend_timer); in pm_suspend_timer_fn()
987 spin_lock_irqsave(&dev->power.lock, flags); in pm_suspend_timer_fn()
989 expires = dev->power.timer_expires; in pm_suspend_timer_fn()
995 dev->power.timer_expires = 0; in pm_suspend_timer_fn()
996 rpm_suspend(dev, dev->power.timer_autosuspends ? in pm_suspend_timer_fn()
1000 spin_unlock_irqrestore(&dev->power.lock, flags); in pm_suspend_timer_fn()
1016 spin_lock_irqsave(&dev->power.lock, flags); in pm_schedule_suspend()
1031 dev->power.timer_expires = expires; in pm_schedule_suspend()
1032 dev->power.timer_autosuspends = 0; in pm_schedule_suspend()
1033 hrtimer_start(&dev->power.suspend_timer, expires, HRTIMER_MODE_ABS); in pm_schedule_suspend()
1036 spin_unlock_irqrestore(&dev->power.lock, flags); in pm_schedule_suspend()
1046 ret = atomic_sub_return(1, &dev->power.usage_count); in rpm_drop_usage_count()
1056 atomic_inc(&dev->power.usage_count); in rpm_drop_usage_count()
1089 might_sleep_if(!(rpmflags & RPM_ASYNC) && !dev->power.irq_safe); in __pm_runtime_idle()
1091 spin_lock_irqsave(&dev->power.lock, flags); in __pm_runtime_idle()
1093 spin_unlock_irqrestore(&dev->power.lock, flags); in __pm_runtime_idle()
1127 might_sleep_if(!(rpmflags & RPM_ASYNC) && !dev->power.irq_safe); in __pm_runtime_suspend()
1129 spin_lock_irqsave(&dev->power.lock, flags); in __pm_runtime_suspend()
1131 spin_unlock_irqrestore(&dev->power.lock, flags); in __pm_runtime_suspend()
1153 might_sleep_if(!(rpmflags & RPM_ASYNC) && !dev->power.irq_safe && in __pm_runtime_resume()
1154 dev->power.runtime_status != RPM_ACTIVE); in __pm_runtime_resume()
1157 atomic_inc(&dev->power.usage_count); in __pm_runtime_resume()
1159 spin_lock_irqsave(&dev->power.lock, flags); in __pm_runtime_resume()
1161 spin_unlock_irqrestore(&dev->power.lock, flags); in __pm_runtime_resume()
1194 spin_lock_irqsave(&dev->power.lock, flags); in pm_runtime_get_if_active()
1195 if (dev->power.disable_depth > 0) { in pm_runtime_get_if_active()
1197 } else if (dev->power.runtime_status != RPM_ACTIVE) { in pm_runtime_get_if_active()
1201 atomic_inc(&dev->power.usage_count); in pm_runtime_get_if_active()
1203 retval = atomic_inc_not_zero(&dev->power.usage_count); in pm_runtime_get_if_active()
1206 spin_unlock_irqrestore(&dev->power.lock, flags); in pm_runtime_get_if_active()
1217 * If runtime PM of the device is disabled or its power.runtime_error field is
1221 * parent's power.ignore_children flag is unset, the device's status cannot be
1224 * If successful, __pm_runtime_set_status() clears the power.runtime_error field
1246 spin_lock_irqsave(&dev->power.lock, flags); in __pm_runtime_set_status()
1252 if (dev->power.runtime_error || dev->power.disable_depth) in __pm_runtime_set_status()
1253 dev->power.disable_depth++; in __pm_runtime_set_status()
1257 spin_unlock_irqrestore(&dev->power.lock, flags); in __pm_runtime_set_status()
1278 spin_lock_irqsave(&dev->power.lock, flags); in __pm_runtime_set_status()
1280 if (dev->power.runtime_status == status || !parent) in __pm_runtime_set_status()
1284 atomic_add_unless(&parent->power.child_count, -1, 0); in __pm_runtime_set_status()
1285 notify_parent = !parent->power.ignore_children; in __pm_runtime_set_status()
1287 spin_lock_nested(&parent->power.lock, SINGLE_DEPTH_NESTING); in __pm_runtime_set_status()
1292 * 'power.ignore_children' flag unset. in __pm_runtime_set_status()
1294 if (!parent->power.disable_depth in __pm_runtime_set_status()
1295 && !parent->power.ignore_children in __pm_runtime_set_status()
1296 && parent->power.runtime_status != RPM_ACTIVE) { in __pm_runtime_set_status()
1301 } else if (dev->power.runtime_status == RPM_SUSPENDED) { in __pm_runtime_set_status()
1302 atomic_inc(&parent->power.child_count); in __pm_runtime_set_status()
1305 spin_unlock(&parent->power.lock); in __pm_runtime_set_status()
1316 dev->power.runtime_error = 0; in __pm_runtime_set_status()
1319 spin_unlock_irqrestore(&dev->power.lock, flags); in __pm_runtime_set_status()
1345 * Should be called under dev->power.lock with interrupts disabled.
1351 if (dev->power.request_pending) { in __pm_runtime_barrier()
1352 dev->power.request = RPM_REQ_NONE; in __pm_runtime_barrier()
1353 spin_unlock_irq(&dev->power.lock); in __pm_runtime_barrier()
1355 cancel_work_sync(&dev->power.work); in __pm_runtime_barrier()
1357 spin_lock_irq(&dev->power.lock); in __pm_runtime_barrier()
1358 dev->power.request_pending = false; in __pm_runtime_barrier()
1361 if (dev->power.runtime_status == RPM_SUSPENDING in __pm_runtime_barrier()
1362 || dev->power.runtime_status == RPM_RESUMING in __pm_runtime_barrier()
1363 || dev->power.idle_notification) { in __pm_runtime_barrier()
1368 prepare_to_wait(&dev->power.wait_queue, &wait, in __pm_runtime_barrier()
1370 if (dev->power.runtime_status != RPM_SUSPENDING in __pm_runtime_barrier()
1371 && dev->power.runtime_status != RPM_RESUMING in __pm_runtime_barrier()
1372 && !dev->power.idle_notification) in __pm_runtime_barrier()
1374 spin_unlock_irq(&dev->power.lock); in __pm_runtime_barrier()
1378 spin_lock_irq(&dev->power.lock); in __pm_runtime_barrier()
1380 finish_wait(&dev->power.wait_queue, &wait); in __pm_runtime_barrier()
1403 spin_lock_irq(&dev->power.lock); in pm_runtime_barrier()
1405 if (dev->power.request_pending in pm_runtime_barrier()
1406 && dev->power.request == RPM_REQ_RESUME) { in pm_runtime_barrier()
1413 spin_unlock_irq(&dev->power.lock); in pm_runtime_barrier()
1425 * Increment power.disable_depth for the device and if it was zero previously,
1431 * __pm_runtime_disable() is called and power.disable_depth is zero, the
1436 spin_lock_irq(&dev->power.lock); in __pm_runtime_disable()
1438 if (dev->power.disable_depth > 0) { in __pm_runtime_disable()
1439 dev->power.disable_depth++; in __pm_runtime_disable()
1448 if (check_resume && dev->power.request_pending in __pm_runtime_disable()
1449 && dev->power.request == RPM_REQ_RESUME) { in __pm_runtime_disable()
1464 if (!dev->power.disable_depth++) { in __pm_runtime_disable()
1466 dev->power.last_status = dev->power.runtime_status; in __pm_runtime_disable()
1470 spin_unlock_irq(&dev->power.lock); in __pm_runtime_disable()
1482 spin_lock_irqsave(&dev->power.lock, flags); in pm_runtime_enable()
1484 if (!dev->power.disable_depth) { in pm_runtime_enable()
1489 if (--dev->power.disable_depth > 0) in pm_runtime_enable()
1492 dev->power.last_status = RPM_INVALID; in pm_runtime_enable()
1493 dev->power.accounting_timestamp = ktime_get_mono_fast_ns(); in pm_runtime_enable()
1495 if (dev->power.runtime_status == RPM_SUSPENDED && in pm_runtime_enable()
1496 !dev->power.ignore_children && in pm_runtime_enable()
1497 atomic_read(&dev->power.child_count) > 0) in pm_runtime_enable()
1501 spin_unlock_irqrestore(&dev->power.lock, flags); in pm_runtime_enable()
1531 * Increase the device's usage count and clear its power.runtime_auto flag,
1537 spin_lock_irq(&dev->power.lock); in pm_runtime_forbid()
1538 if (!dev->power.runtime_auto) in pm_runtime_forbid()
1541 dev->power.runtime_auto = false; in pm_runtime_forbid()
1542 atomic_inc(&dev->power.usage_count); in pm_runtime_forbid()
1546 spin_unlock_irq(&dev->power.lock); in pm_runtime_forbid()
1554 * Decrease the device's usage count and set its power.runtime_auto flag.
1560 spin_lock_irq(&dev->power.lock); in pm_runtime_allow()
1561 if (dev->power.runtime_auto) in pm_runtime_allow()
1564 dev->power.runtime_auto = true; in pm_runtime_allow()
1572 spin_unlock_irq(&dev->power.lock); in pm_runtime_allow()
1580 * Set the power.no_callbacks flag, which tells the PM core that this
1581 * device is power-managed through its parent and has no runtime PM
1586 spin_lock_irq(&dev->power.lock); in pm_runtime_no_callbacks()
1587 dev->power.no_callbacks = 1; in pm_runtime_no_callbacks()
1588 spin_unlock_irq(&dev->power.lock); in pm_runtime_no_callbacks()
1598 * Set the power.irq_safe flag, which tells the PM core that the
1609 spin_lock_irq(&dev->power.lock); in pm_runtime_irq_safe()
1610 dev->power.irq_safe = 1; in pm_runtime_irq_safe()
1611 spin_unlock_irq(&dev->power.lock); in pm_runtime_irq_safe()
1624 * This function must be called under dev->power.lock with interrupts disabled.
1628 int delay = dev->power.autosuspend_delay; in update_autosuspend()
1631 if (dev->power.use_autosuspend && delay < 0) { in update_autosuspend()
1635 atomic_inc(&dev->power.usage_count); in update_autosuspend()
1647 atomic_dec(&dev->power.usage_count); in update_autosuspend()
1659 * Set the device's power.autosuspend_delay value. If it changes to negative
1660 * and the power.use_autosuspend flag is set, prevent runtime suspends. If it
1667 spin_lock_irq(&dev->power.lock); in pm_runtime_set_autosuspend_delay()
1668 old_delay = dev->power.autosuspend_delay; in pm_runtime_set_autosuspend_delay()
1669 old_use = dev->power.use_autosuspend; in pm_runtime_set_autosuspend_delay()
1670 dev->power.autosuspend_delay = delay; in pm_runtime_set_autosuspend_delay()
1672 spin_unlock_irq(&dev->power.lock); in pm_runtime_set_autosuspend_delay()
1681 * Set the device's power.use_autosuspend flag, and allow or prevent runtime
1688 spin_lock_irq(&dev->power.lock); in __pm_runtime_use_autosuspend()
1689 old_delay = dev->power.autosuspend_delay; in __pm_runtime_use_autosuspend()
1690 old_use = dev->power.use_autosuspend; in __pm_runtime_use_autosuspend()
1691 dev->power.use_autosuspend = use; in __pm_runtime_use_autosuspend()
1693 spin_unlock_irq(&dev->power.lock); in __pm_runtime_use_autosuspend()
1703 dev->power.runtime_status = RPM_SUSPENDED; in pm_runtime_init()
1704 dev->power.last_status = RPM_INVALID; in pm_runtime_init()
1705 dev->power.idle_notification = false; in pm_runtime_init()
1707 dev->power.disable_depth = 1; in pm_runtime_init()
1708 atomic_set(&dev->power.usage_count, 0); in pm_runtime_init()
1710 dev->power.runtime_error = 0; in pm_runtime_init()
1712 atomic_set(&dev->power.child_count, 0); in pm_runtime_init()
1714 dev->power.runtime_auto = true; in pm_runtime_init()
1716 dev->power.request_pending = false; in pm_runtime_init()
1717 dev->power.request = RPM_REQ_NONE; in pm_runtime_init()
1718 dev->power.deferred_resume = false; in pm_runtime_init()
1719 dev->power.needs_force_resume = 0; in pm_runtime_init()
1720 INIT_WORK(&dev->power.work, pm_runtime_work); in pm_runtime_init()
1722 dev->power.timer_expires = 0; in pm_runtime_init()
1723 hrtimer_init(&dev->power.suspend_timer, CLOCK_MONOTONIC, HRTIMER_MODE_ABS); in pm_runtime_init()
1724 dev->power.suspend_timer.function = pm_suspend_timer_fn; in pm_runtime_init()
1726 init_waitqueue_head(&dev->power.wait_queue); in pm_runtime_init()
1736 if (dev->power.runtime_status == RPM_ACTIVE) in pm_runtime_reinit()
1738 if (dev->power.irq_safe) { in pm_runtime_reinit()
1739 spin_lock_irq(&dev->power.lock); in pm_runtime_reinit()
1740 dev->power.irq_safe = 0; in pm_runtime_reinit()
1741 spin_unlock_irq(&dev->power.lock); in pm_runtime_reinit()
1802 spin_lock_irq(&dev->power.lock); in pm_runtime_new_link()
1803 dev->power.links_count++; in pm_runtime_new_link()
1804 spin_unlock_irq(&dev->power.lock); in pm_runtime_new_link()
1809 spin_lock_irq(&dev->power.lock); in pm_runtime_drop_link_count()
1810 WARN_ON(dev->power.links_count == 0); in pm_runtime_drop_link_count()
1811 dev->power.links_count--; in pm_runtime_drop_link_count()
1812 spin_unlock_irq(&dev->power.lock); in pm_runtime_drop_link_count()
1835 return atomic_read(&dev->power.usage_count) <= 1 && in pm_runtime_need_not_resume()
1836 (atomic_read(&dev->power.child_count) == 0 || in pm_runtime_need_not_resume()
1837 dev->power.ignore_children); in pm_runtime_need_not_resume()
1853 * sure the device is put into low power state and it should only be used during
1885 dev->power.needs_force_resume = 1; in pm_runtime_force_suspend()
1902 * into low power state by a call to pm_runtime_force_suspend(). Here we reverse
1903 * those actions and bring the device into full power, if it is expected to be
1914 if (!pm_runtime_status_suspended(dev) || !dev->power.needs_force_resume) in pm_runtime_force_resume()
1935 dev->power.needs_force_resume = 0; in pm_runtime_force_resume()