Commit | Line | Data |
---|---|---|
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 | 26 | #ifdef CONFIG_PM |
28cb5ef1 RW |
27 | extern struct workqueue_struct *pm_wq; |
28 | ||
29 | static inline bool queue_pm_work(struct work_struct *work) | |
30 | { | |
31 | return queue_work(pm_wq, work); | |
32 | } | |
33 | ||
717e5d45 UH |
34 | extern int pm_generic_runtime_suspend(struct device *dev); |
35 | extern int pm_generic_runtime_resume(struct device *dev); | |
37f20416 UH |
36 | extern int pm_runtime_force_suspend(struct device *dev); |
37 | extern int pm_runtime_force_resume(struct device *dev); | |
5e928f77 | 38 | |
140a6c94 AS |
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); | |
a436b6a1 | 42 | extern int pm_runtime_get_if_in_use(struct device *dev); |
5e928f77 | 43 | extern int pm_schedule_suspend(struct device *dev, unsigned int delay); |
5e928f77 RW |
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); | |
53823639 RW |
48 | extern void pm_runtime_allow(struct device *dev); |
49 | extern void pm_runtime_forbid(struct device *dev); | |
7490e442 | 50 | extern void pm_runtime_no_callbacks(struct device *dev); |
c7b61de5 | 51 | extern void pm_runtime_irq_safe(struct device *dev); |
15bcb91d AS |
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); | |
00dc9ad1 RW |
55 | extern void pm_runtime_update_max_time_suspended(struct device *dev, |
56 | s64 delta_ns); | |
e823407f | 57 | extern void pm_runtime_set_memalloc_noio(struct device *dev, bool enable); |
5e928f77 | 58 | |
372a12ed UH |
59 | static inline void pm_suspend_ignore_children(struct device *dev, bool enable) |
60 | { | |
61 | dev->power.ignore_children = enable; | |
62 | } | |
63 | ||
5e928f77 RW |
64 | static inline bool pm_children_suspended(struct device *dev) |
65 | { | |
66 | return dev->power.ignore_children | |
67 | || !atomic_read(&dev->power.child_count); | |
68 | } | |
69 | ||
5e928f77 RW |
70 | static inline void pm_runtime_get_noresume(struct device *dev) |
71 | { | |
72 | atomic_inc(&dev->power.usage_count); | |
73 | } | |
74 | ||
75 | static inline void pm_runtime_put_noidle(struct device *dev) | |
76 | { | |
77 | atomic_add_unless(&dev->power.usage_count, -1, 0); | |
78 | } | |
79 | ||
7a1a8eb5 RW |
80 | static inline bool device_run_wake(struct device *dev) |
81 | { | |
82 | return dev->power.run_wake; | |
83 | } | |
84 | ||
85 | static inline void device_set_run_wake(struct device *dev, bool enable) | |
86 | { | |
87 | dev->power.run_wake = enable; | |
88 | } | |
89 | ||
d690b2cd RW |
90 | static inline bool pm_runtime_suspended(struct device *dev) |
91 | { | |
f08f5a0a RW |
92 | return dev->power.runtime_status == RPM_SUSPENDED |
93 | && !dev->power.disable_depth; | |
d690b2cd RW |
94 | } |
95 | ||
fbadc58d SL |
96 | static inline bool pm_runtime_active(struct device *dev) |
97 | { | |
98 | return dev->power.runtime_status == RPM_ACTIVE | |
99 | || dev->power.disable_depth; | |
100 | } | |
101 | ||
f3393b62 KH |
102 | static inline bool pm_runtime_status_suspended(struct device *dev) |
103 | { | |
104 | return dev->power.runtime_status == RPM_SUSPENDED; | |
105 | } | |
106 | ||
4b31db8a RW |
107 | static inline bool pm_runtime_enabled(struct device *dev) |
108 | { | |
109 | return !dev->power.disable_depth; | |
110 | } | |
111 | ||
cb8f51bd RW |
112 | static inline bool pm_runtime_callbacks_present(struct device *dev) |
113 | { | |
114 | return !dev->power.no_callbacks; | |
115 | } | |
116 | ||
15bcb91d AS |
117 | static inline void pm_runtime_mark_last_busy(struct device *dev) |
118 | { | |
119 | ACCESS_ONCE(dev->power.last_busy) = jiffies; | |
120 | } | |
121 | ||
3fb1581e KK |
122 | static inline bool pm_runtime_is_irq_safe(struct device *dev) |
123 | { | |
124 | return dev->power.irq_safe; | |
125 | } | |
126 | ||
d30d819d RW |
127 | #else /* !CONFIG_PM */ |
128 | ||
129 | static inline bool queue_pm_work(struct work_struct *work) { return false; } | |
130 | ||
131 | static inline int pm_generic_runtime_suspend(struct device *dev) { return 0; } | |
132 | static inline int pm_generic_runtime_resume(struct device *dev) { return 0; } | |
133 | static inline int pm_runtime_force_suspend(struct device *dev) { return 0; } | |
134 | static inline int pm_runtime_force_resume(struct device *dev) { return 0; } | |
5e928f77 | 135 | |
140a6c94 AS |
136 | static inline int __pm_runtime_idle(struct device *dev, int rpmflags) |
137 | { | |
138 | return -ENOSYS; | |
139 | } | |
140 | static inline int __pm_runtime_suspend(struct device *dev, int rpmflags) | |
141 | { | |
142 | return -ENOSYS; | |
143 | } | |
144 | static inline int __pm_runtime_resume(struct device *dev, int rpmflags) | |
145 | { | |
146 | return 1; | |
147 | } | |
5e928f77 RW |
148 | static inline int pm_schedule_suspend(struct device *dev, unsigned int delay) |
149 | { | |
150 | return -ENOSYS; | |
151 | } | |
a436b6a1 RW |
152 | static inline int pm_runtime_get_if_in_use(struct device *dev) |
153 | { | |
154 | return -EINVAL; | |
155 | } | |
5e928f77 RW |
156 | static inline int __pm_runtime_set_status(struct device *dev, |
157 | unsigned int status) { return 0; } | |
158 | static inline int pm_runtime_barrier(struct device *dev) { return 0; } | |
159 | static inline void pm_runtime_enable(struct device *dev) {} | |
160 | static inline void __pm_runtime_disable(struct device *dev, bool c) {} | |
53823639 RW |
161 | static inline void pm_runtime_allow(struct device *dev) {} |
162 | static inline void pm_runtime_forbid(struct device *dev) {} | |
5e928f77 | 163 | |
372a12ed | 164 | static inline void pm_suspend_ignore_children(struct device *dev, bool enable) {} |
5e928f77 | 165 | static inline bool pm_children_suspended(struct device *dev) { return false; } |
5e928f77 RW |
166 | static inline void pm_runtime_get_noresume(struct device *dev) {} |
167 | static inline void pm_runtime_put_noidle(struct device *dev) {} | |
7a1a8eb5 RW |
168 | static inline bool device_run_wake(struct device *dev) { return false; } |
169 | static inline void device_set_run_wake(struct device *dev, bool enable) {} | |
d690b2cd | 170 | static inline bool pm_runtime_suspended(struct device *dev) { return false; } |
fbadc58d | 171 | static inline bool pm_runtime_active(struct device *dev) { return true; } |
f3393b62 | 172 | static inline bool pm_runtime_status_suspended(struct device *dev) { return false; } |
4b31db8a | 173 | static inline bool pm_runtime_enabled(struct device *dev) { return false; } |
5e928f77 | 174 | |
7490e442 | 175 | static inline void pm_runtime_no_callbacks(struct device *dev) {} |
c7b61de5 | 176 | static inline void pm_runtime_irq_safe(struct device *dev) {} |
3fb1581e | 177 | static inline bool pm_runtime_is_irq_safe(struct device *dev) { return false; } |
2f60ba70 | 178 | |
cb8f51bd | 179 | static inline bool pm_runtime_callbacks_present(struct device *dev) { return false; } |
15bcb91d AS |
180 | static inline void pm_runtime_mark_last_busy(struct device *dev) {} |
181 | static inline void __pm_runtime_use_autosuspend(struct device *dev, | |
182 | bool use) {} | |
183 | static inline void pm_runtime_set_autosuspend_delay(struct device *dev, | |
184 | int delay) {} | |
185 | static inline unsigned long pm_runtime_autosuspend_expiration( | |
186 | struct device *dev) { return 0; } | |
e823407f ML |
187 | static inline void pm_runtime_set_memalloc_noio(struct device *dev, |
188 | bool enable){} | |
15bcb91d | 189 | |
d30d819d | 190 | #endif /* !CONFIG_PM */ |
5e928f77 | 191 | |
140a6c94 AS |
192 | static inline int pm_runtime_idle(struct device *dev) |
193 | { | |
194 | return __pm_runtime_idle(dev, 0); | |
195 | } | |
196 | ||
197 | static inline int pm_runtime_suspend(struct device *dev) | |
198 | { | |
199 | return __pm_runtime_suspend(dev, 0); | |
200 | } | |
201 | ||
15bcb91d AS |
202 | static inline int pm_runtime_autosuspend(struct device *dev) |
203 | { | |
204 | return __pm_runtime_suspend(dev, RPM_AUTO); | |
205 | } | |
206 | ||
140a6c94 AS |
207 | static inline int pm_runtime_resume(struct device *dev) |
208 | { | |
209 | return __pm_runtime_resume(dev, 0); | |
210 | } | |
211 | ||
212 | static inline int pm_request_idle(struct device *dev) | |
213 | { | |
214 | return __pm_runtime_idle(dev, RPM_ASYNC); | |
215 | } | |
216 | ||
217 | static inline int pm_request_resume(struct device *dev) | |
218 | { | |
219 | return __pm_runtime_resume(dev, RPM_ASYNC); | |
220 | } | |
221 | ||
5fc62aad ML |
222 | static inline int pm_request_autosuspend(struct device *dev) |
223 | { | |
224 | return __pm_runtime_suspend(dev, RPM_ASYNC | RPM_AUTO); | |
225 | } | |
226 | ||
5e928f77 RW |
227 | static inline int pm_runtime_get(struct device *dev) |
228 | { | |
140a6c94 | 229 | return __pm_runtime_resume(dev, RPM_GET_PUT | RPM_ASYNC); |
5e928f77 RW |
230 | } |
231 | ||
232 | static inline int pm_runtime_get_sync(struct device *dev) | |
233 | { | |
140a6c94 | 234 | return __pm_runtime_resume(dev, RPM_GET_PUT); |
5e928f77 RW |
235 | } |
236 | ||
237 | static inline int pm_runtime_put(struct device *dev) | |
238 | { | |
140a6c94 | 239 | return __pm_runtime_idle(dev, RPM_GET_PUT | RPM_ASYNC); |
5e928f77 RW |
240 | } |
241 | ||
15bcb91d AS |
242 | static inline int pm_runtime_put_autosuspend(struct device *dev) |
243 | { | |
244 | return __pm_runtime_suspend(dev, | |
245 | RPM_GET_PUT | RPM_ASYNC | RPM_AUTO); | |
246 | } | |
247 | ||
5e928f77 RW |
248 | static inline int pm_runtime_put_sync(struct device *dev) |
249 | { | |
140a6c94 | 250 | return __pm_runtime_idle(dev, RPM_GET_PUT); |
5e928f77 RW |
251 | } |
252 | ||
c7b61de5 AS |
253 | static inline int pm_runtime_put_sync_suspend(struct device *dev) |
254 | { | |
255 | return __pm_runtime_suspend(dev, RPM_GET_PUT); | |
256 | } | |
257 | ||
15bcb91d AS |
258 | static inline int pm_runtime_put_sync_autosuspend(struct device *dev) |
259 | { | |
260 | return __pm_runtime_suspend(dev, RPM_GET_PUT | RPM_AUTO); | |
261 | } | |
262 | ||
5e928f77 RW |
263 | static inline int pm_runtime_set_active(struct device *dev) |
264 | { | |
265 | return __pm_runtime_set_status(dev, RPM_ACTIVE); | |
266 | } | |
267 | ||
268 | static inline void pm_runtime_set_suspended(struct device *dev) | |
269 | { | |
270 | __pm_runtime_set_status(dev, RPM_SUSPENDED); | |
271 | } | |
272 | ||
273 | static inline void pm_runtime_disable(struct device *dev) | |
274 | { | |
275 | __pm_runtime_disable(dev, true); | |
276 | } | |
277 | ||
15bcb91d AS |
278 | static inline void pm_runtime_use_autosuspend(struct device *dev) |
279 | { | |
280 | __pm_runtime_use_autosuspend(dev, true); | |
281 | } | |
282 | ||
283 | static inline void pm_runtime_dont_use_autosuspend(struct device *dev) | |
284 | { | |
285 | __pm_runtime_use_autosuspend(dev, false); | |
286 | } | |
287 | ||
5e928f77 | 288 | #endif |