Something went wrong. Try again.
(I'm so sorry!) Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
Something went wrong. Try again.
C
123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258259260261262263/* SPDX-License-Identifier: GPL-2.0-or-later *//* * pm_wakeup.h - Power management wakeup interface * * Copyright (C) 2008 Alan Stern * Copyright (C) 2010 Rafael J. Wysocki, Novell Inc. */
#ifndef _LINUX_PM_WAKEUP_H#define _LINUX_PM_WAKEUP_H
#ifndef _DEVICE_H_# error "Please do not include this file directly."#endif
#include <linux/types.h>
struct wake_irq;
/** * struct wakeup_source - Representation of wakeup sources * * @name: Name of the wakeup source * @id: Wakeup source id * @entry: Wakeup source list entry * @lock: Wakeup source lock * @wakeirq: Optional device specific wakeirq * @timer: Wakeup timer list * @timer_expires: Wakeup timer expiration * @total_time: Total time this wakeup source has been active. * @max_time: Maximum time this wakeup source has been continuously active. * @last_time: Monotonic clock when the wakeup source's was touched last time. * @prevent_sleep_time: Total time this source has been preventing autosleep. * @event_count: Number of signaled wakeup events. * @active_count: Number of times the wakeup source was activated. * @relax_count: Number of times the wakeup source was deactivated. * @expire_count: Number of times the wakeup source's timeout has expired. * @wakeup_count: Number of times the wakeup source might abort suspend. * @dev: Struct device for sysfs statistics about the wakeup source. * @active: Status of the wakeup source. * @autosleep_enabled: Autosleep is active, so update @prevent_sleep_time. */struct wakeup_source { const char *name; int id; struct list_head entry; spinlock_t lock; struct wake_irq *wakeirq; struct timer_list timer; unsigned long timer_expires; ktime_t total_time; ktime_t max_time; ktime_t last_time; ktime_t start_prevent_time; ktime_t prevent_sleep_time; unsigned long event_count; unsigned long active_count; unsigned long relax_count; unsigned long expire_count; unsigned long wakeup_count; struct device *dev; bool active:1; bool autosleep_enabled:1;};
#define for_each_wakeup_source(ws) \ for ((ws) = wakeup_sources_walk_start(); \ (ws); \ (ws) = wakeup_sources_walk_next((ws)))
#ifdef CONFIG_PM_SLEEP
/* * Changes to device_may_wakeup take effect on the next pm state change. */
static inline bool device_can_wakeup(struct device *dev){ return dev->power.can_wakeup;}
static inline bool device_may_wakeup(struct device *dev){ return dev->power.can_wakeup && !!dev->power.wakeup;}
static inline bool device_wakeup_path(struct device *dev){ return dev->power.wakeup_path;}
static inline void device_set_wakeup_path(struct device *dev){ dev->power.wakeup_path = true;}
static inline void device_set_out_band_wakeup(struct device *dev){ dev->power.out_band_wakeup = true;}
static inline bool device_out_band_wakeup(struct device *dev){ return dev->power.out_band_wakeup;}
/* drivers/base/power/wakeup.c */extern struct wakeup_source *wakeup_source_register(struct device *dev, const char *name);extern void wakeup_source_unregister(struct wakeup_source *ws);extern int wakeup_sources_read_lock(void);extern void wakeup_sources_read_unlock(int idx);extern struct wakeup_source *wakeup_sources_walk_start(void);extern struct wakeup_source *wakeup_sources_walk_next(struct wakeup_source *ws);extern int device_wakeup_enable(struct device *dev);extern void device_wakeup_disable(struct device *dev);extern void device_set_wakeup_capable(struct device *dev, bool capable);extern int device_set_wakeup_enable(struct device *dev, bool enable);extern void __pm_stay_awake(struct wakeup_source *ws);extern void pm_stay_awake(struct device *dev);extern void __pm_relax(struct wakeup_source *ws);extern void pm_relax(struct device *dev);extern void pm_wakeup_ws_event(struct wakeup_source *ws, unsigned int msec, bool hard);extern void pm_wakeup_dev_event(struct device *dev, unsigned int msec, bool hard);
#else /* !CONFIG_PM_SLEEP */
static inline void device_set_wakeup_capable(struct device *dev, bool capable){ dev->power.can_wakeup = capable;}
static inline bool device_can_wakeup(struct device *dev){ return dev->power.can_wakeup;}
static inline struct wakeup_source *wakeup_source_register(struct device *dev, const char *name){ return NULL;}
static inline void wakeup_source_unregister(struct wakeup_source *ws) {}
static inline int device_wakeup_enable(struct device *dev){ dev->power.should_wakeup = true; return 0;}
static inline void device_wakeup_disable(struct device *dev){ dev->power.should_wakeup = false;}
static inline int device_set_wakeup_enable(struct device *dev, bool enable){ dev->power.should_wakeup = enable; return 0;}
static inline bool device_may_wakeup(struct device *dev){ return dev->power.can_wakeup && dev->power.should_wakeup;}
static inline bool device_wakeup_path(struct device *dev){ return false;}
static inline void device_set_wakeup_path(struct device *dev) {}
static inline void device_set_out_band_wakeup(struct device *dev) {}
static inline bool device_out_band_wakeup(struct device *dev){ return false;}
static inline void __pm_stay_awake(struct wakeup_source *ws) {}
static inline void pm_stay_awake(struct device *dev) {}
static inline void __pm_relax(struct wakeup_source *ws) {}
static inline void pm_relax(struct device *dev) {}
static inline void pm_wakeup_ws_event(struct wakeup_source *ws, unsigned int msec, bool hard) {}
static inline void pm_wakeup_dev_event(struct device *dev, unsigned int msec, bool hard) {}
#endif /* !CONFIG_PM_SLEEP */
static inline bool device_awake_path(struct device *dev){ return device_wakeup_path(dev);}
static inline void device_set_awake_path(struct device *dev){ device_set_wakeup_path(dev);}
static inline void __pm_wakeup_event(struct wakeup_source *ws, unsigned int msec){ pm_wakeup_ws_event(ws, msec, false);}
static inline void pm_wakeup_event(struct device *dev, unsigned int msec){ pm_wakeup_dev_event(dev, msec, false);}
static inline void pm_wakeup_hard_event(struct device *dev){ pm_wakeup_dev_event(dev, 0, true);}
/** * device_init_wakeup - Device wakeup initialization. * @dev: Device to handle. * @enable: Whether or not to enable @dev as a wakeup device. * * By default, most devices should leave wakeup disabled. The exceptions are * devices that everyone expects to be wakeup sources: keyboards, power buttons, * possibly network interfaces, etc. Also, devices that don't generate their * own wakeup requests but merely forward requests from one bus to another * (like PCI bridges) should have wakeup enabled by default. */static inline int device_init_wakeup(struct device *dev, bool enable){ if (enable) { device_set_wakeup_capable(dev, true); return device_wakeup_enable(dev); } device_wakeup_disable(dev); device_set_wakeup_capable(dev, false); return 0;}
static void device_disable_wakeup(void *dev){ device_init_wakeup(dev, false);}
/** * devm_device_init_wakeup - Resource managed device wakeup initialization. * @dev: Device to handle. * * This function is the devm managed version of device_init_wakeup(dev, true). */static inline int devm_device_init_wakeup(struct device *dev){ device_init_wakeup(dev, true); return devm_add_action_or_reset(dev, device_disable_wakeup, dev);}
#endif /* _LINUX_PM_WAKEUP_H */