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); | |
717e5d45 | 38 | #else |
28cb5ef1 RW |
39 | static inline bool queue_pm_work(struct work_struct *work) { return false; } |
40 | ||
717e5d45 UH |
41 | static inline int pm_generic_runtime_suspend(struct device *dev) { return 0; } |
42 | static inline int pm_generic_runtime_resume(struct device *dev) { return 0; } | |
37f20416 UH |
43 | static inline int pm_runtime_force_suspend(struct device *dev) { return 0; } |
44 | static inline int pm_runtime_force_resume(struct device *dev) { return 0; } | |
717e5d45 UH |
45 | #endif |
46 | ||
5e928f77 RW |
47 | #ifdef CONFIG_PM_RUNTIME |
48 | ||
140a6c94 AS |
49 | extern int __pm_runtime_idle(struct device *dev, int rpmflags); |
50 | extern int __pm_runtime_suspend(struct device *dev, int rpmflags); | |
51 | extern int __pm_runtime_resume(struct device *dev, int rpmflags); | |
5e928f77 | 52 | extern int pm_schedule_suspend(struct device *dev, unsigned int delay); |
5e928f77 RW |
53 | extern int __pm_runtime_set_status(struct device *dev, unsigned int status); |
54 | extern int pm_runtime_barrier(struct device *dev); | |
55 | extern void pm_runtime_enable(struct device *dev); | |
56 | extern void __pm_runtime_disable(struct device *dev, bool check_resume); | |
53823639 RW |
57 | extern void pm_runtime_allow(struct device *dev); |
58 | extern void pm_runtime_forbid(struct device *dev); | |
7490e442 | 59 | extern void pm_runtime_no_callbacks(struct device *dev); |
c7b61de5 | 60 | extern void pm_runtime_irq_safe(struct device *dev); |
15bcb91d AS |
61 | extern void __pm_runtime_use_autosuspend(struct device *dev, bool use); |
62 | extern void pm_runtime_set_autosuspend_delay(struct device *dev, int delay); | |
63 | extern unsigned long pm_runtime_autosuspend_expiration(struct device *dev); | |
00dc9ad1 RW |
64 | extern void pm_runtime_update_max_time_suspended(struct device *dev, |
65 | s64 delta_ns); | |
e823407f | 66 | extern void pm_runtime_set_memalloc_noio(struct device *dev, bool enable); |
5e928f77 RW |
67 | |
68 | static inline bool pm_children_suspended(struct device *dev) | |
69 | { | |
70 | return dev->power.ignore_children | |
71 | || !atomic_read(&dev->power.child_count); | |
72 | } | |
73 | ||
5e928f77 RW |
74 | static inline void pm_runtime_get_noresume(struct device *dev) |
75 | { | |
76 | atomic_inc(&dev->power.usage_count); | |
77 | } | |
78 | ||
79 | static inline void pm_runtime_put_noidle(struct device *dev) | |
80 | { | |
81 | atomic_add_unless(&dev->power.usage_count, -1, 0); | |
82 | } | |
83 | ||
7a1a8eb5 RW |
84 | static inline bool device_run_wake(struct device *dev) |
85 | { | |
86 | return dev->power.run_wake; | |
87 | } | |
88 | ||
89 | static inline void device_set_run_wake(struct device *dev, bool enable) | |
90 | { | |
91 | dev->power.run_wake = enable; | |
92 | } | |
93 | ||
d690b2cd RW |
94 | static inline bool pm_runtime_suspended(struct device *dev) |
95 | { | |
f08f5a0a RW |
96 | return dev->power.runtime_status == RPM_SUSPENDED |
97 | && !dev->power.disable_depth; | |
d690b2cd RW |
98 | } |
99 | ||
fbadc58d SL |
100 | static inline bool pm_runtime_active(struct device *dev) |
101 | { | |
102 | return dev->power.runtime_status == RPM_ACTIVE | |
103 | || dev->power.disable_depth; | |
104 | } | |
105 | ||
f3393b62 KH |
106 | static inline bool pm_runtime_status_suspended(struct device *dev) |
107 | { | |
108 | return dev->power.runtime_status == RPM_SUSPENDED; | |
109 | } | |
110 | ||
aae4518b RW |
111 | static inline bool pm_runtime_suspended_if_enabled(struct device *dev) |
112 | { | |
113 | return pm_runtime_status_suspended(dev) && dev->power.disable_depth == 1; | |
114 | } | |
115 | ||
4b31db8a RW |
116 | static inline bool pm_runtime_enabled(struct device *dev) |
117 | { | |
118 | return !dev->power.disable_depth; | |
119 | } | |
120 | ||
cb8f51bd RW |
121 | static inline bool pm_runtime_callbacks_present(struct device *dev) |
122 | { | |
123 | return !dev->power.no_callbacks; | |
124 | } | |
125 | ||
15bcb91d AS |
126 | static inline void pm_runtime_mark_last_busy(struct device *dev) |
127 | { | |
128 | ACCESS_ONCE(dev->power.last_busy) = jiffies; | |
129 | } | |
130 | ||
5e928f77 RW |
131 | #else /* !CONFIG_PM_RUNTIME */ |
132 | ||
140a6c94 AS |
133 | static inline int __pm_runtime_idle(struct device *dev, int rpmflags) |
134 | { | |
135 | return -ENOSYS; | |
136 | } | |
137 | static inline int __pm_runtime_suspend(struct device *dev, int rpmflags) | |
138 | { | |
139 | return -ENOSYS; | |
140 | } | |
141 | static inline int __pm_runtime_resume(struct device *dev, int rpmflags) | |
142 | { | |
143 | return 1; | |
144 | } | |
5e928f77 RW |
145 | static inline int pm_schedule_suspend(struct device *dev, unsigned int delay) |
146 | { | |
147 | return -ENOSYS; | |
148 | } | |
5e928f77 RW |
149 | static inline int __pm_runtime_set_status(struct device *dev, |
150 | unsigned int status) { return 0; } | |
151 | static inline int pm_runtime_barrier(struct device *dev) { return 0; } | |
152 | static inline void pm_runtime_enable(struct device *dev) {} | |
153 | static inline void __pm_runtime_disable(struct device *dev, bool c) {} | |
53823639 RW |
154 | static inline void pm_runtime_allow(struct device *dev) {} |
155 | static inline void pm_runtime_forbid(struct device *dev) {} | |
5e928f77 RW |
156 | |
157 | static inline bool pm_children_suspended(struct device *dev) { return false; } | |
5e928f77 RW |
158 | static inline void pm_runtime_get_noresume(struct device *dev) {} |
159 | static inline void pm_runtime_put_noidle(struct device *dev) {} | |
7a1a8eb5 RW |
160 | static inline bool device_run_wake(struct device *dev) { return false; } |
161 | static inline void device_set_run_wake(struct device *dev, bool enable) {} | |
d690b2cd | 162 | static inline bool pm_runtime_suspended(struct device *dev) { return false; } |
fbadc58d | 163 | static inline bool pm_runtime_active(struct device *dev) { return true; } |
f3393b62 | 164 | static inline bool pm_runtime_status_suspended(struct device *dev) { return false; } |
aae4518b | 165 | static inline bool pm_runtime_suspended_if_enabled(struct device *dev) { return false; } |
4b31db8a | 166 | static inline bool pm_runtime_enabled(struct device *dev) { return false; } |
5e928f77 | 167 | |
7490e442 | 168 | static inline void pm_runtime_no_callbacks(struct device *dev) {} |
c7b61de5 | 169 | static inline void pm_runtime_irq_safe(struct device *dev) {} |
2f60ba70 | 170 | |
cb8f51bd | 171 | static inline bool pm_runtime_callbacks_present(struct device *dev) { return false; } |
15bcb91d AS |
172 | static inline void pm_runtime_mark_last_busy(struct device *dev) {} |
173 | static inline void __pm_runtime_use_autosuspend(struct device *dev, | |
174 | bool use) {} | |
175 | static inline void pm_runtime_set_autosuspend_delay(struct device *dev, | |
176 | int delay) {} | |
177 | static inline unsigned long pm_runtime_autosuspend_expiration( | |
178 | struct device *dev) { return 0; } | |
e823407f ML |
179 | static inline void pm_runtime_set_memalloc_noio(struct device *dev, |
180 | bool enable){} | |
15bcb91d | 181 | |
5e928f77 RW |
182 | #endif /* !CONFIG_PM_RUNTIME */ |
183 | ||
140a6c94 AS |
184 | static inline int pm_runtime_idle(struct device *dev) |
185 | { | |
186 | return __pm_runtime_idle(dev, 0); | |
187 | } | |
188 | ||
189 | static inline int pm_runtime_suspend(struct device *dev) | |
190 | { | |
191 | return __pm_runtime_suspend(dev, 0); | |
192 | } | |
193 | ||
15bcb91d AS |
194 | static inline int pm_runtime_autosuspend(struct device *dev) |
195 | { | |
196 | return __pm_runtime_suspend(dev, RPM_AUTO); | |
197 | } | |
198 | ||
140a6c94 AS |
199 | static inline int pm_runtime_resume(struct device *dev) |
200 | { | |
201 | return __pm_runtime_resume(dev, 0); | |
202 | } | |
203 | ||
204 | static inline int pm_request_idle(struct device *dev) | |
205 | { | |
206 | return __pm_runtime_idle(dev, RPM_ASYNC); | |
207 | } | |
208 | ||
209 | static inline int pm_request_resume(struct device *dev) | |
210 | { | |
211 | return __pm_runtime_resume(dev, RPM_ASYNC); | |
212 | } | |
213 | ||
5fc62aad ML |
214 | static inline int pm_request_autosuspend(struct device *dev) |
215 | { | |
216 | return __pm_runtime_suspend(dev, RPM_ASYNC | RPM_AUTO); | |
217 | } | |
218 | ||
5e928f77 RW |
219 | static inline int pm_runtime_get(struct device *dev) |
220 | { | |
140a6c94 | 221 | return __pm_runtime_resume(dev, RPM_GET_PUT | RPM_ASYNC); |
5e928f77 RW |
222 | } |
223 | ||
224 | static inline int pm_runtime_get_sync(struct device *dev) | |
225 | { | |
140a6c94 | 226 | return __pm_runtime_resume(dev, RPM_GET_PUT); |
5e928f77 RW |
227 | } |
228 | ||
229 | static inline int pm_runtime_put(struct device *dev) | |
230 | { | |
140a6c94 | 231 | return __pm_runtime_idle(dev, RPM_GET_PUT | RPM_ASYNC); |
5e928f77 RW |
232 | } |
233 | ||
15bcb91d AS |
234 | static inline int pm_runtime_put_autosuspend(struct device *dev) |
235 | { | |
236 | return __pm_runtime_suspend(dev, | |
237 | RPM_GET_PUT | RPM_ASYNC | RPM_AUTO); | |
238 | } | |
239 | ||
5e928f77 RW |
240 | static inline int pm_runtime_put_sync(struct device *dev) |
241 | { | |
140a6c94 | 242 | return __pm_runtime_idle(dev, RPM_GET_PUT); |
5e928f77 RW |
243 | } |
244 | ||
c7b61de5 AS |
245 | static inline int pm_runtime_put_sync_suspend(struct device *dev) |
246 | { | |
247 | return __pm_runtime_suspend(dev, RPM_GET_PUT); | |
248 | } | |
249 | ||
15bcb91d AS |
250 | static inline int pm_runtime_put_sync_autosuspend(struct device *dev) |
251 | { | |
252 | return __pm_runtime_suspend(dev, RPM_GET_PUT | RPM_AUTO); | |
253 | } | |
254 | ||
5e928f77 RW |
255 | static inline int pm_runtime_set_active(struct device *dev) |
256 | { | |
257 | return __pm_runtime_set_status(dev, RPM_ACTIVE); | |
258 | } | |
259 | ||
260 | static inline void pm_runtime_set_suspended(struct device *dev) | |
261 | { | |
262 | __pm_runtime_set_status(dev, RPM_SUSPENDED); | |
263 | } | |
264 | ||
265 | static inline void pm_runtime_disable(struct device *dev) | |
266 | { | |
267 | __pm_runtime_disable(dev, true); | |
268 | } | |
269 | ||
15bcb91d AS |
270 | static inline void pm_runtime_use_autosuspend(struct device *dev) |
271 | { | |
272 | __pm_runtime_use_autosuspend(dev, true); | |
273 | } | |
274 | ||
275 | static inline void pm_runtime_dont_use_autosuspend(struct device *dev) | |
276 | { | |
277 | __pm_runtime_use_autosuspend(dev, false); | |
278 | } | |
279 | ||
5e928f77 | 280 | #endif |