]>
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 */
26 #ifdef CONFIG_PM_RUNTIME
28 extern struct workqueue_struct
*pm_wq
;
30 extern int __pm_runtime_idle(struct device
*dev
, int rpmflags
);
31 extern int __pm_runtime_suspend(struct device
*dev
, int rpmflags
);
32 extern int __pm_runtime_resume(struct device
*dev
, int rpmflags
);
33 extern int pm_schedule_suspend(struct device
*dev
, unsigned int delay
);
34 extern int __pm_runtime_set_status(struct device
*dev
, unsigned int status
);
35 extern int pm_runtime_barrier(struct device
*dev
);
36 extern void pm_runtime_enable(struct device
*dev
);
37 extern void __pm_runtime_disable(struct device
*dev
, bool check_resume
);
38 extern void pm_runtime_allow(struct device
*dev
);
39 extern void pm_runtime_forbid(struct device
*dev
);
40 extern int pm_generic_runtime_suspend(struct device
*dev
);
41 extern int pm_generic_runtime_resume(struct device
*dev
);
42 extern void pm_runtime_no_callbacks(struct device
*dev
);
43 extern void pm_runtime_irq_safe(struct device
*dev
);
44 extern void __pm_runtime_use_autosuspend(struct device
*dev
, bool use
);
45 extern void pm_runtime_set_autosuspend_delay(struct device
*dev
, int delay
);
46 extern unsigned long pm_runtime_autosuspend_expiration(struct device
*dev
);
47 extern void pm_runtime_update_max_time_suspended(struct device
*dev
,
49 extern void pm_runtime_set_memalloc_noio(struct device
*dev
, bool enable
);
51 static inline bool pm_children_suspended(struct device
*dev
)
53 return dev
->power
.ignore_children
54 || !atomic_read(&dev
->power
.child_count
);
57 static inline void pm_runtime_get_noresume(struct device
*dev
)
59 atomic_inc(&dev
->power
.usage_count
);
62 static inline void pm_runtime_put_noidle(struct device
*dev
)
64 atomic_add_unless(&dev
->power
.usage_count
, -1, 0);
67 static inline bool device_run_wake(struct device
*dev
)
69 return dev
->power
.run_wake
;
72 static inline void device_set_run_wake(struct device
*dev
, bool enable
)
74 dev
->power
.run_wake
= enable
;
77 static inline bool pm_runtime_suspended(struct device
*dev
)
79 return dev
->power
.runtime_status
== RPM_SUSPENDED
80 && !dev
->power
.disable_depth
;
83 static inline bool pm_runtime_active(struct device
*dev
)
85 return dev
->power
.runtime_status
== RPM_ACTIVE
86 || dev
->power
.disable_depth
;
89 static inline bool pm_runtime_status_suspended(struct device
*dev
)
91 return dev
->power
.runtime_status
== RPM_SUSPENDED
;
94 static inline bool pm_runtime_enabled(struct device
*dev
)
96 return !dev
->power
.disable_depth
;
99 static inline bool pm_runtime_callbacks_present(struct device
*dev
)
101 return !dev
->power
.no_callbacks
;
104 static inline void pm_runtime_mark_last_busy(struct device
*dev
)
106 ACCESS_ONCE(dev
->power
.last_busy
) = jiffies
;
109 #else /* !CONFIG_PM_RUNTIME */
111 static inline int __pm_runtime_idle(struct device
*dev
, int rpmflags
)
115 static inline int __pm_runtime_suspend(struct device
*dev
, int rpmflags
)
119 static inline int __pm_runtime_resume(struct device
*dev
, int rpmflags
)
123 static inline int pm_schedule_suspend(struct device
*dev
, unsigned int delay
)
127 static inline int __pm_runtime_set_status(struct device
*dev
,
128 unsigned int status
) { return 0; }
129 static inline int pm_runtime_barrier(struct device
*dev
) { return 0; }
130 static inline void pm_runtime_enable(struct device
*dev
) {}
131 static inline void __pm_runtime_disable(struct device
*dev
, bool c
) {}
132 static inline void pm_runtime_allow(struct device
*dev
) {}
133 static inline void pm_runtime_forbid(struct device
*dev
) {}
135 static inline bool pm_children_suspended(struct device
*dev
) { return false; }
136 static inline void pm_runtime_get_noresume(struct device
*dev
) {}
137 static inline void pm_runtime_put_noidle(struct device
*dev
) {}
138 static inline bool device_run_wake(struct device
*dev
) { return false; }
139 static inline void device_set_run_wake(struct device
*dev
, bool enable
) {}
140 static inline bool pm_runtime_suspended(struct device
*dev
) { return false; }
141 static inline bool pm_runtime_active(struct device
*dev
) { return true; }
142 static inline bool pm_runtime_status_suspended(struct device
*dev
) { return false; }
143 static inline bool pm_runtime_enabled(struct device
*dev
) { return false; }
145 static inline int pm_generic_runtime_suspend(struct device
*dev
) { return 0; }
146 static inline int pm_generic_runtime_resume(struct device
*dev
) { return 0; }
147 static inline void pm_runtime_no_callbacks(struct device
*dev
) {}
148 static inline void pm_runtime_irq_safe(struct device
*dev
) {}
150 static inline bool pm_runtime_callbacks_present(struct device
*dev
) { return false; }
151 static inline void pm_runtime_mark_last_busy(struct device
*dev
) {}
152 static inline void __pm_runtime_use_autosuspend(struct device
*dev
,
154 static inline void pm_runtime_set_autosuspend_delay(struct device
*dev
,
156 static inline unsigned long pm_runtime_autosuspend_expiration(
157 struct device
*dev
) { return 0; }
158 static inline void pm_runtime_set_memalloc_noio(struct device
*dev
,
161 #endif /* !CONFIG_PM_RUNTIME */
163 static inline int pm_runtime_idle(struct device
*dev
)
165 return __pm_runtime_idle(dev
, 0);
168 static inline int pm_runtime_suspend(struct device
*dev
)
170 return __pm_runtime_suspend(dev
, 0);
173 static inline int pm_runtime_autosuspend(struct device
*dev
)
175 return __pm_runtime_suspend(dev
, RPM_AUTO
);
178 static inline int pm_runtime_resume(struct device
*dev
)
180 return __pm_runtime_resume(dev
, 0);
183 static inline int pm_request_idle(struct device
*dev
)
185 return __pm_runtime_idle(dev
, RPM_ASYNC
);
188 static inline int pm_request_resume(struct device
*dev
)
190 return __pm_runtime_resume(dev
, RPM_ASYNC
);
193 static inline int pm_request_autosuspend(struct device
*dev
)
195 return __pm_runtime_suspend(dev
, RPM_ASYNC
| RPM_AUTO
);
198 static inline int pm_runtime_get(struct device
*dev
)
200 return __pm_runtime_resume(dev
, RPM_GET_PUT
| RPM_ASYNC
);
203 static inline int pm_runtime_get_sync(struct device
*dev
)
205 return __pm_runtime_resume(dev
, RPM_GET_PUT
);
208 static inline int pm_runtime_put(struct device
*dev
)
210 return __pm_runtime_idle(dev
, RPM_GET_PUT
| RPM_ASYNC
);
213 static inline int pm_runtime_put_autosuspend(struct device
*dev
)
215 return __pm_runtime_suspend(dev
,
216 RPM_GET_PUT
| RPM_ASYNC
| RPM_AUTO
);
219 static inline int pm_runtime_put_sync(struct device
*dev
)
221 return __pm_runtime_idle(dev
, RPM_GET_PUT
);
224 static inline int pm_runtime_put_sync_suspend(struct device
*dev
)
226 return __pm_runtime_suspend(dev
, RPM_GET_PUT
);
229 static inline int pm_runtime_put_sync_autosuspend(struct device
*dev
)
231 return __pm_runtime_suspend(dev
, RPM_GET_PUT
| RPM_AUTO
);
234 static inline int pm_runtime_set_active(struct device
*dev
)
236 return __pm_runtime_set_status(dev
, RPM_ACTIVE
);
239 static inline void pm_runtime_set_suspended(struct device
*dev
)
241 __pm_runtime_set_status(dev
, RPM_SUSPENDED
);
244 static inline void pm_runtime_disable(struct device
*dev
)
246 __pm_runtime_disable(dev
, true);
249 static inline void pm_runtime_use_autosuspend(struct device
*dev
)
251 __pm_runtime_use_autosuspend(dev
, true);
254 static inline void pm_runtime_dont_use_autosuspend(struct device
*dev
)
256 __pm_runtime_use_autosuspend(dev
, false);