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powerpc: Convert last uses of __FUNCTION__ to __func__
[deliverable/linux.git] / include / linux / pm_runtime.h
CommitLineData
5e928f77
RW		 1/*
2 * pm_runtime.h - Device run-time power management helper functions.
3 *
4 * Copyright (C) 2009 Rafael J. Wysocki <rjw@sisk.pl>
5 *
6 * This file is released under the GPLv2.
7 */
8
9#ifndef _LINUX_PM_RUNTIME_H
10#define _LINUX_PM_RUNTIME_H
11
12#include <linux/device.h>
246359d3 13#include <linux/notifier.h>
5e928f77
RW		 14#include <linux/pm.h>
15
15bcb91d
AS		 16#include <linux/jiffies.h>
17
3f9af051
AS		 18/* Runtime PM flag argument bits */
19#define RPM_ASYNC 0x01 /* Request is asynchronous */
20#define RPM_NOWAIT 0x02 /* Don't wait for concurrent
21 state change */
140a6c94
AS		 22#define RPM_GET_PUT 0x04 /* Increment/decrement the
23 usage_count */
15bcb91d 24#define RPM_AUTO 0x08 /* Use autosuspend_delay */
3f9af051 25
717e5d45
UH		 26#ifdef CONFIG_PM
27extern int pm_generic_runtime_suspend(struct device *dev);
28extern int pm_generic_runtime_resume(struct device *dev);
37f20416
UH		 29extern int pm_runtime_force_suspend(struct device *dev);
30extern int pm_runtime_force_resume(struct device *dev);
717e5d45
UH		 31#else
32static inline int pm_generic_runtime_suspend(struct device *dev) { return 0; }
33static inline int pm_generic_runtime_resume(struct device *dev) { return 0; }
37f20416
UH		 34static inline int pm_runtime_force_suspend(struct device *dev) { return 0; }
35static inline int pm_runtime_force_resume(struct device *dev) { return 0; }
717e5d45
UH		 36#endif
37
5e928f77
RW		 38#ifdef CONFIG_PM_RUNTIME
39
40extern struct workqueue_struct *pm_wq;
41
140a6c94
AS		 42extern int __pm_runtime_idle(struct device *dev, int rpmflags);
43extern int __pm_runtime_suspend(struct device *dev, int rpmflags);
44extern int __pm_runtime_resume(struct device *dev, int rpmflags);
5e928f77 45extern int pm_schedule_suspend(struct device *dev, unsigned int delay);
5e928f77
RW		 46extern int __pm_runtime_set_status(struct device *dev, unsigned int status);
47extern int pm_runtime_barrier(struct device *dev);
48extern void pm_runtime_enable(struct device *dev);
49extern void __pm_runtime_disable(struct device *dev, bool check_resume);
53823639
RW		 50extern void pm_runtime_allow(struct device *dev);
51extern void pm_runtime_forbid(struct device *dev);
7490e442 52extern void pm_runtime_no_callbacks(struct device *dev);
c7b61de5 53extern void pm_runtime_irq_safe(struct device *dev);
15bcb91d
AS		 54extern void __pm_runtime_use_autosuspend(struct device *dev, bool use);
55extern void pm_runtime_set_autosuspend_delay(struct device *dev, int delay);
56extern unsigned long pm_runtime_autosuspend_expiration(struct device *dev);
00dc9ad1
RW		 57extern void pm_runtime_update_max_time_suspended(struct device *dev,
58 s64 delta_ns);
e823407f 59extern void pm_runtime_set_memalloc_noio(struct device *dev, bool enable);
5e928f77
RW		 60
61static inline bool pm_children_suspended(struct device *dev)
62{
63 return dev->power.ignore_children
64 || !atomic_read(&dev->power.child_count);
65}
66
5e928f77
RW		 67static inline void pm_runtime_get_noresume(struct device *dev)
68{
69 atomic_inc(&dev->power.usage_count);
70}
71
72static inline void pm_runtime_put_noidle(struct device *dev)
73{
74 atomic_add_unless(&dev->power.usage_count, -1, 0);
75}
76
7a1a8eb5
RW		 77static inline bool device_run_wake(struct device *dev)
78{
79 return dev->power.run_wake;
80}
81
82static inline void device_set_run_wake(struct device *dev, bool enable)
83{
84 dev->power.run_wake = enable;
85}
86
d690b2cd
RW		 87static inline bool pm_runtime_suspended(struct device *dev)
88{
f08f5a0a
RW		 89 return dev->power.runtime_status == RPM_SUSPENDED
90 && !dev->power.disable_depth;
d690b2cd
RW		 91}
92
fbadc58d
SL		 93static inline bool pm_runtime_active(struct device *dev)
94{
95 return dev->power.runtime_status == RPM_ACTIVE
96 || dev->power.disable_depth;
97}
98
f3393b62
KH		 99static inline bool pm_runtime_status_suspended(struct device *dev)
100{
101 return dev->power.runtime_status == RPM_SUSPENDED;
102}
103
4b31db8a
RW		 104static inline bool pm_runtime_enabled(struct device *dev)
105{
106 return !dev->power.disable_depth;
107}
108
cb8f51bd
RW		 109static inline bool pm_runtime_callbacks_present(struct device *dev)
110{
111 return !dev->power.no_callbacks;
112}
113
15bcb91d
AS		 114static inline void pm_runtime_mark_last_busy(struct device *dev)
115{
116 ACCESS_ONCE(dev->power.last_busy) = jiffies;
117}
118
5e928f77
RW		 119#else /* !CONFIG_PM_RUNTIME */
120
140a6c94
AS		 121static inline int __pm_runtime_idle(struct device *dev, int rpmflags)
122{
123 return -ENOSYS;
124}
125static inline int __pm_runtime_suspend(struct device *dev, int rpmflags)
126{
127 return -ENOSYS;
128}
129static inline int __pm_runtime_resume(struct device *dev, int rpmflags)
130{
131 return 1;
132}
5e928f77
RW		 133static inline int pm_schedule_suspend(struct device *dev, unsigned int delay)
134{
135 return -ENOSYS;
136}
5e928f77
RW		 137static inline int __pm_runtime_set_status(struct device *dev,
138 unsigned int status) { return 0; }
139static inline int pm_runtime_barrier(struct device *dev) { return 0; }
140static inline void pm_runtime_enable(struct device *dev) {}
141static inline void __pm_runtime_disable(struct device *dev, bool c) {}
53823639
RW		 142static inline void pm_runtime_allow(struct device *dev) {}
143static inline void pm_runtime_forbid(struct device *dev) {}
5e928f77
RW		 144
145static inline bool pm_children_suspended(struct device *dev) { return false; }
5e928f77
RW		 146static inline void pm_runtime_get_noresume(struct device *dev) {}
147static inline void pm_runtime_put_noidle(struct device *dev) {}
7a1a8eb5
RW		 148static inline bool device_run_wake(struct device *dev) { return false; }
149static inline void device_set_run_wake(struct device *dev, bool enable) {}
d690b2cd 150static inline bool pm_runtime_suspended(struct device *dev) { return false; }
fbadc58d 151static inline bool pm_runtime_active(struct device *dev) { return true; }
f3393b62 152static inline bool pm_runtime_status_suspended(struct device *dev) { return false; }
4b31db8a 153static inline bool pm_runtime_enabled(struct device *dev) { return false; }
5e928f77 154
7490e442 155static inline void pm_runtime_no_callbacks(struct device *dev) {}
c7b61de5 156static inline void pm_runtime_irq_safe(struct device *dev) {}
2f60ba70 157
cb8f51bd 158static inline bool pm_runtime_callbacks_present(struct device *dev) { return false; }
15bcb91d
AS		 159static inline void pm_runtime_mark_last_busy(struct device *dev) {}
160static inline void __pm_runtime_use_autosuspend(struct device *dev,
161 bool use) {}
162static inline void pm_runtime_set_autosuspend_delay(struct device *dev,
163 int delay) {}
164static inline unsigned long pm_runtime_autosuspend_expiration(
165 struct device *dev) { return 0; }
e823407f
ML		 166static inline void pm_runtime_set_memalloc_noio(struct device *dev,
167 bool enable){}
15bcb91d 168
5e928f77
RW		 169#endif /* !CONFIG_PM_RUNTIME */
170
140a6c94
AS		 171static inline int pm_runtime_idle(struct device *dev)
172{
173 return __pm_runtime_idle(dev, 0);
174}
175
176static inline int pm_runtime_suspend(struct device *dev)
177{
178 return __pm_runtime_suspend(dev, 0);
179}
180
15bcb91d
AS		 181static inline int pm_runtime_autosuspend(struct device *dev)
182{
183 return __pm_runtime_suspend(dev, RPM_AUTO);
184}
185
140a6c94
AS		 186static inline int pm_runtime_resume(struct device *dev)
187{
188 return __pm_runtime_resume(dev, 0);
189}
190
191static inline int pm_request_idle(struct device *dev)
192{
193 return __pm_runtime_idle(dev, RPM_ASYNC);
194}
195
196static inline int pm_request_resume(struct device *dev)
197{
198 return __pm_runtime_resume(dev, RPM_ASYNC);
199}
200
5fc62aad
ML		 201static inline int pm_request_autosuspend(struct device *dev)
202{
203 return __pm_runtime_suspend(dev, RPM_ASYNC | RPM_AUTO);
204}
205
5e928f77
RW		 206static inline int pm_runtime_get(struct device *dev)
207{
140a6c94 208 return __pm_runtime_resume(dev, RPM_GET_PUT | RPM_ASYNC);
5e928f77
RW		 209}
210
211static inline int pm_runtime_get_sync(struct device *dev)
212{
140a6c94 213 return __pm_runtime_resume(dev, RPM_GET_PUT);
5e928f77
RW		 214}
215
216static inline int pm_runtime_put(struct device *dev)
217{
140a6c94 218 return __pm_runtime_idle(dev, RPM_GET_PUT | RPM_ASYNC);
5e928f77
RW		 219}
220
15bcb91d
AS		 221static inline int pm_runtime_put_autosuspend(struct device *dev)
222{
223 return __pm_runtime_suspend(dev,
224 RPM_GET_PUT | RPM_ASYNC | RPM_AUTO);
225}
226
5e928f77
RW		 227static inline int pm_runtime_put_sync(struct device *dev)
228{
140a6c94 229 return __pm_runtime_idle(dev, RPM_GET_PUT);
5e928f77
RW		 230}
231
c7b61de5
AS		 232static inline int pm_runtime_put_sync_suspend(struct device *dev)
233{
234 return __pm_runtime_suspend(dev, RPM_GET_PUT);
235}
236
15bcb91d
AS		 237static inline int pm_runtime_put_sync_autosuspend(struct device *dev)
238{
239 return __pm_runtime_suspend(dev, RPM_GET_PUT | RPM_AUTO);
240}
241
5e928f77
RW		 242static inline int pm_runtime_set_active(struct device *dev)
243{
244 return __pm_runtime_set_status(dev, RPM_ACTIVE);
245}
246
247static inline void pm_runtime_set_suspended(struct device *dev)
248{
249 __pm_runtime_set_status(dev, RPM_SUSPENDED);
250}
251
252static inline void pm_runtime_disable(struct device *dev)
253{
254 __pm_runtime_disable(dev, true);
255}
256
15bcb91d
AS		 257static inline void pm_runtime_use_autosuspend(struct device *dev)
258{
259 __pm_runtime_use_autosuspend(dev, true);
260}
261
262static inline void pm_runtime_dont_use_autosuspend(struct device *dev)
263{
264 __pm_runtime_use_autosuspend(dev, false);
265}
266
5e928f77 267#endif
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