]>
git.proxmox.com Git - mirror_ubuntu-bionic-kernel.git/blob - include/linux/pm_runtime.h
2 * pm_runtime.h - Device run-time power management helper functions.
4 * Copyright (C) 2009 Rafael J. Wysocki <rjw@sisk.pl>
6 * This file is released under the GPLv2.
9 #ifndef _LINUX_PM_RUNTIME_H
10 #define _LINUX_PM_RUNTIME_H
12 #include <linux/device.h>
13 #include <linux/notifier.h>
16 #include <linux/jiffies.h>
18 /* Runtime PM flag argument bits */
19 #define RPM_ASYNC 0x01 /* Request is asynchronous */
20 #define RPM_NOWAIT 0x02 /* Don't wait for concurrent
22 #define RPM_GET_PUT 0x04 /* Increment/decrement the
24 #define RPM_AUTO 0x08 /* Use autosuspend_delay */
27 extern struct workqueue_struct
*pm_wq
;
29 static inline bool queue_pm_work(struct work_struct
*work
)
31 return queue_work(pm_wq
, work
);
34 extern int pm_generic_runtime_suspend(struct device
*dev
);
35 extern int pm_generic_runtime_resume(struct device
*dev
);
36 extern int pm_runtime_force_suspend(struct device
*dev
);
37 extern int pm_runtime_force_resume(struct device
*dev
);
39 extern int __pm_runtime_idle(struct device
*dev
, int rpmflags
);
40 extern int __pm_runtime_suspend(struct device
*dev
, int rpmflags
);
41 extern int __pm_runtime_resume(struct device
*dev
, int rpmflags
);
42 extern int pm_runtime_get_if_in_use(struct device
*dev
);
43 extern int pm_schedule_suspend(struct device
*dev
, unsigned int delay
);
44 extern int __pm_runtime_set_status(struct device
*dev
, unsigned int status
);
45 extern int pm_runtime_barrier(struct device
*dev
);
46 extern void pm_runtime_enable(struct device
*dev
);
47 extern void __pm_runtime_disable(struct device
*dev
, bool check_resume
);
48 extern void pm_runtime_allow(struct device
*dev
);
49 extern void pm_runtime_forbid(struct device
*dev
);
50 extern void pm_runtime_no_callbacks(struct device
*dev
);
51 extern void pm_runtime_irq_safe(struct device
*dev
);
52 extern void __pm_runtime_use_autosuspend(struct device
*dev
, bool use
);
53 extern void pm_runtime_set_autosuspend_delay(struct device
*dev
, int delay
);
54 extern unsigned long pm_runtime_autosuspend_expiration(struct device
*dev
);
55 extern void pm_runtime_update_max_time_suspended(struct device
*dev
,
57 extern void pm_runtime_set_memalloc_noio(struct device
*dev
, bool enable
);
59 static inline bool pm_children_suspended(struct device
*dev
)
61 return dev
->power
.ignore_children
62 || !atomic_read(&dev
->power
.child_count
);
65 static inline void pm_runtime_get_noresume(struct device
*dev
)
67 atomic_inc(&dev
->power
.usage_count
);
70 static inline void pm_runtime_put_noidle(struct device
*dev
)
72 atomic_add_unless(&dev
->power
.usage_count
, -1, 0);
75 static inline bool device_run_wake(struct device
*dev
)
77 return dev
->power
.run_wake
;
80 static inline void device_set_run_wake(struct device
*dev
, bool enable
)
82 dev
->power
.run_wake
= enable
;
85 static inline bool pm_runtime_suspended(struct device
*dev
)
87 return dev
->power
.runtime_status
== RPM_SUSPENDED
88 && !dev
->power
.disable_depth
;
91 static inline bool pm_runtime_active(struct device
*dev
)
93 return dev
->power
.runtime_status
== RPM_ACTIVE
94 || dev
->power
.disable_depth
;
97 static inline bool pm_runtime_status_suspended(struct device
*dev
)
99 return dev
->power
.runtime_status
== RPM_SUSPENDED
;
102 static inline bool pm_runtime_enabled(struct device
*dev
)
104 return !dev
->power
.disable_depth
;
107 static inline bool pm_runtime_callbacks_present(struct device
*dev
)
109 return !dev
->power
.no_callbacks
;
112 static inline void pm_runtime_mark_last_busy(struct device
*dev
)
114 ACCESS_ONCE(dev
->power
.last_busy
) = jiffies
;
117 static inline bool pm_runtime_is_irq_safe(struct device
*dev
)
119 return dev
->power
.irq_safe
;
122 #else /* !CONFIG_PM */
124 static inline bool queue_pm_work(struct work_struct
*work
) { return false; }
126 static inline int pm_generic_runtime_suspend(struct device
*dev
) { return 0; }
127 static inline int pm_generic_runtime_resume(struct device
*dev
) { return 0; }
128 static inline int pm_runtime_force_suspend(struct device
*dev
) { return 0; }
129 static inline int pm_runtime_force_resume(struct device
*dev
) { return 0; }
131 static inline int __pm_runtime_idle(struct device
*dev
, int rpmflags
)
135 static inline int __pm_runtime_suspend(struct device
*dev
, int rpmflags
)
139 static inline int __pm_runtime_resume(struct device
*dev
, int rpmflags
)
143 static inline int pm_schedule_suspend(struct device
*dev
, unsigned int delay
)
147 static inline int pm_runtime_get_if_in_use(struct device
*dev
)
151 static inline int __pm_runtime_set_status(struct device
*dev
,
152 unsigned int status
) { return 0; }
153 static inline int pm_runtime_barrier(struct device
*dev
) { return 0; }
154 static inline void pm_runtime_enable(struct device
*dev
) {}
155 static inline void __pm_runtime_disable(struct device
*dev
, bool c
) {}
156 static inline void pm_runtime_allow(struct device
*dev
) {}
157 static inline void pm_runtime_forbid(struct device
*dev
) {}
159 static inline bool pm_children_suspended(struct device
*dev
) { return false; }
160 static inline void pm_runtime_get_noresume(struct device
*dev
) {}
161 static inline void pm_runtime_put_noidle(struct device
*dev
) {}
162 static inline bool device_run_wake(struct device
*dev
) { return false; }
163 static inline void device_set_run_wake(struct device
*dev
, bool enable
) {}
164 static inline bool pm_runtime_suspended(struct device
*dev
) { return false; }
165 static inline bool pm_runtime_active(struct device
*dev
) { return true; }
166 static inline bool pm_runtime_status_suspended(struct device
*dev
) { return false; }
167 static inline bool pm_runtime_enabled(struct device
*dev
) { return false; }
169 static inline void pm_runtime_no_callbacks(struct device
*dev
) {}
170 static inline void pm_runtime_irq_safe(struct device
*dev
) {}
171 static inline bool pm_runtime_is_irq_safe(struct device
*dev
) { return false; }
173 static inline bool pm_runtime_callbacks_present(struct device
*dev
) { return false; }
174 static inline void pm_runtime_mark_last_busy(struct device
*dev
) {}
175 static inline void __pm_runtime_use_autosuspend(struct device
*dev
,
177 static inline void pm_runtime_set_autosuspend_delay(struct device
*dev
,
179 static inline unsigned long pm_runtime_autosuspend_expiration(
180 struct device
*dev
) { return 0; }
181 static inline void pm_runtime_set_memalloc_noio(struct device
*dev
,
184 #endif /* !CONFIG_PM */
186 static inline int pm_runtime_idle(struct device
*dev
)
188 return __pm_runtime_idle(dev
, 0);
191 static inline int pm_runtime_suspend(struct device
*dev
)
193 return __pm_runtime_suspend(dev
, 0);
196 static inline int pm_runtime_autosuspend(struct device
*dev
)
198 return __pm_runtime_suspend(dev
, RPM_AUTO
);
201 static inline int pm_runtime_resume(struct device
*dev
)
203 return __pm_runtime_resume(dev
, 0);
206 static inline int pm_request_idle(struct device
*dev
)
208 return __pm_runtime_idle(dev
, RPM_ASYNC
);
211 static inline int pm_request_resume(struct device
*dev
)
213 return __pm_runtime_resume(dev
, RPM_ASYNC
);
216 static inline int pm_request_autosuspend(struct device
*dev
)
218 return __pm_runtime_suspend(dev
, RPM_ASYNC
| RPM_AUTO
);
221 static inline int pm_runtime_get(struct device
*dev
)
223 return __pm_runtime_resume(dev
, RPM_GET_PUT
| RPM_ASYNC
);
226 static inline int pm_runtime_get_sync(struct device
*dev
)
228 return __pm_runtime_resume(dev
, RPM_GET_PUT
);
231 static inline int pm_runtime_put(struct device
*dev
)
233 return __pm_runtime_idle(dev
, RPM_GET_PUT
| RPM_ASYNC
);
236 static inline int pm_runtime_put_autosuspend(struct device
*dev
)
238 return __pm_runtime_suspend(dev
,
239 RPM_GET_PUT
| RPM_ASYNC
| RPM_AUTO
);
242 static inline int pm_runtime_put_sync(struct device
*dev
)
244 return __pm_runtime_idle(dev
, RPM_GET_PUT
);
247 static inline int pm_runtime_put_sync_suspend(struct device
*dev
)
249 return __pm_runtime_suspend(dev
, RPM_GET_PUT
);
252 static inline int pm_runtime_put_sync_autosuspend(struct device
*dev
)
254 return __pm_runtime_suspend(dev
, RPM_GET_PUT
| RPM_AUTO
);
257 static inline int pm_runtime_set_active(struct device
*dev
)
259 return __pm_runtime_set_status(dev
, RPM_ACTIVE
);
262 static inline void pm_runtime_set_suspended(struct device
*dev
)
264 __pm_runtime_set_status(dev
, RPM_SUSPENDED
);
267 static inline void pm_runtime_disable(struct device
*dev
)
269 __pm_runtime_disable(dev
, true);
272 static inline void pm_runtime_use_autosuspend(struct device
*dev
)
274 __pm_runtime_use_autosuspend(dev
, true);
277 static inline void pm_runtime_dont_use_autosuspend(struct device
*dev
)
279 __pm_runtime_use_autosuspend(dev
, false);