]>
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 UH |
26 | #ifdef CONFIG_PM |
27 | extern int pm_generic_runtime_suspend(struct device *dev); | |
28 | extern int pm_generic_runtime_resume(struct device *dev); | |
37f20416 UH |
29 | extern int pm_runtime_force_suspend(struct device *dev); |
30 | extern int pm_runtime_force_resume(struct device *dev); | |
717e5d45 UH |
31 | #else |
32 | static inline int pm_generic_runtime_suspend(struct device *dev) { return 0; } | |
33 | static inline int pm_generic_runtime_resume(struct device *dev) { return 0; } | |
37f20416 UH |
34 | static inline int pm_runtime_force_suspend(struct device *dev) { return 0; } |
35 | static inline int pm_runtime_force_resume(struct device *dev) { return 0; } | |
717e5d45 UH |
36 | #endif |
37 | ||
5e928f77 RW |
38 | #ifdef CONFIG_PM_RUNTIME |
39 | ||
40 | extern struct workqueue_struct *pm_wq; | |
41 | ||
140a6c94 AS |
42 | extern int __pm_runtime_idle(struct device *dev, int rpmflags); |
43 | extern int __pm_runtime_suspend(struct device *dev, int rpmflags); | |
44 | extern int __pm_runtime_resume(struct device *dev, int rpmflags); | |
5e928f77 | 45 | extern int pm_schedule_suspend(struct device *dev, unsigned int delay); |
5e928f77 RW |
46 | extern int __pm_runtime_set_status(struct device *dev, unsigned int status); |
47 | extern int pm_runtime_barrier(struct device *dev); | |
48 | extern void pm_runtime_enable(struct device *dev); | |
49 | extern void __pm_runtime_disable(struct device *dev, bool check_resume); | |
53823639 RW |
50 | extern void pm_runtime_allow(struct device *dev); |
51 | extern void pm_runtime_forbid(struct device *dev); | |
7490e442 | 52 | extern void pm_runtime_no_callbacks(struct device *dev); |
c7b61de5 | 53 | extern void pm_runtime_irq_safe(struct device *dev); |
15bcb91d AS |
54 | extern void __pm_runtime_use_autosuspend(struct device *dev, bool use); |
55 | extern void pm_runtime_set_autosuspend_delay(struct device *dev, int delay); | |
56 | extern unsigned long pm_runtime_autosuspend_expiration(struct device *dev); | |
00dc9ad1 RW |
57 | extern void pm_runtime_update_max_time_suspended(struct device *dev, |
58 | s64 delta_ns); | |
e823407f | 59 | extern void pm_runtime_set_memalloc_noio(struct device *dev, bool enable); |
5e928f77 RW |
60 | |
61 | static 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 |
67 | static inline void pm_runtime_get_noresume(struct device *dev) |
68 | { | |
69 | atomic_inc(&dev->power.usage_count); | |
70 | } | |
71 | ||
72 | static inline void pm_runtime_put_noidle(struct device *dev) | |
73 | { | |
74 | atomic_add_unless(&dev->power.usage_count, -1, 0); | |
75 | } | |
76 | ||
7a1a8eb5 RW |
77 | static inline bool device_run_wake(struct device *dev) |
78 | { | |
79 | return dev->power.run_wake; | |
80 | } | |
81 | ||
82 | static inline void device_set_run_wake(struct device *dev, bool enable) | |
83 | { | |
84 | dev->power.run_wake = enable; | |
85 | } | |
86 | ||
d690b2cd RW |
87 | static 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 |
93 | static 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 |
99 | static inline bool pm_runtime_status_suspended(struct device *dev) |
100 | { | |
101 | return dev->power.runtime_status == RPM_SUSPENDED; | |
102 | } | |
103 | ||
4b31db8a RW |
104 | static inline bool pm_runtime_enabled(struct device *dev) |
105 | { | |
106 | return !dev->power.disable_depth; | |
107 | } | |
108 | ||
cb8f51bd RW |
109 | static inline bool pm_runtime_callbacks_present(struct device *dev) |
110 | { | |
111 | return !dev->power.no_callbacks; | |
112 | } | |
113 | ||
15bcb91d AS |
114 | static 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 |
121 | static inline int __pm_runtime_idle(struct device *dev, int rpmflags) |
122 | { | |
123 | return -ENOSYS; | |
124 | } | |
125 | static inline int __pm_runtime_suspend(struct device *dev, int rpmflags) | |
126 | { | |
127 | return -ENOSYS; | |
128 | } | |
129 | static inline int __pm_runtime_resume(struct device *dev, int rpmflags) | |
130 | { | |
131 | return 1; | |
132 | } | |
5e928f77 RW |
133 | static inline int pm_schedule_suspend(struct device *dev, unsigned int delay) |
134 | { | |
135 | return -ENOSYS; | |
136 | } | |
5e928f77 RW |
137 | static inline int __pm_runtime_set_status(struct device *dev, |
138 | unsigned int status) { return 0; } | |
139 | static inline int pm_runtime_barrier(struct device *dev) { return 0; } | |
140 | static inline void pm_runtime_enable(struct device *dev) {} | |
141 | static inline void __pm_runtime_disable(struct device *dev, bool c) {} | |
53823639 RW |
142 | static inline void pm_runtime_allow(struct device *dev) {} |
143 | static inline void pm_runtime_forbid(struct device *dev) {} | |
5e928f77 RW |
144 | |
145 | static inline bool pm_children_suspended(struct device *dev) { return false; } | |
5e928f77 RW |
146 | static inline void pm_runtime_get_noresume(struct device *dev) {} |
147 | static inline void pm_runtime_put_noidle(struct device *dev) {} | |
7a1a8eb5 RW |
148 | static inline bool device_run_wake(struct device *dev) { return false; } |
149 | static inline void device_set_run_wake(struct device *dev, bool enable) {} | |
d690b2cd | 150 | static inline bool pm_runtime_suspended(struct device *dev) { return false; } |
fbadc58d | 151 | static inline bool pm_runtime_active(struct device *dev) { return true; } |
f3393b62 | 152 | static inline bool pm_runtime_status_suspended(struct device *dev) { return false; } |
4b31db8a | 153 | static inline bool pm_runtime_enabled(struct device *dev) { return false; } |
5e928f77 | 154 | |
7490e442 | 155 | static inline void pm_runtime_no_callbacks(struct device *dev) {} |
c7b61de5 | 156 | static inline void pm_runtime_irq_safe(struct device *dev) {} |
2f60ba70 | 157 | |
cb8f51bd | 158 | static inline bool pm_runtime_callbacks_present(struct device *dev) { return false; } |
15bcb91d AS |
159 | static inline void pm_runtime_mark_last_busy(struct device *dev) {} |
160 | static inline void __pm_runtime_use_autosuspend(struct device *dev, | |
161 | bool use) {} | |
162 | static inline void pm_runtime_set_autosuspend_delay(struct device *dev, | |
163 | int delay) {} | |
164 | static inline unsigned long pm_runtime_autosuspend_expiration( | |
165 | struct device *dev) { return 0; } | |
e823407f ML |
166 | static 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 |
171 | static inline int pm_runtime_idle(struct device *dev) |
172 | { | |
173 | return __pm_runtime_idle(dev, 0); | |
174 | } | |
175 | ||
176 | static inline int pm_runtime_suspend(struct device *dev) | |
177 | { | |
178 | return __pm_runtime_suspend(dev, 0); | |
179 | } | |
180 | ||
15bcb91d AS |
181 | static inline int pm_runtime_autosuspend(struct device *dev) |
182 | { | |
183 | return __pm_runtime_suspend(dev, RPM_AUTO); | |
184 | } | |
185 | ||
140a6c94 AS |
186 | static inline int pm_runtime_resume(struct device *dev) |
187 | { | |
188 | return __pm_runtime_resume(dev, 0); | |
189 | } | |
190 | ||
191 | static inline int pm_request_idle(struct device *dev) | |
192 | { | |
193 | return __pm_runtime_idle(dev, RPM_ASYNC); | |
194 | } | |
195 | ||
196 | static inline int pm_request_resume(struct device *dev) | |
197 | { | |
198 | return __pm_runtime_resume(dev, RPM_ASYNC); | |
199 | } | |
200 | ||
5fc62aad ML |
201 | static inline int pm_request_autosuspend(struct device *dev) |
202 | { | |
203 | return __pm_runtime_suspend(dev, RPM_ASYNC | RPM_AUTO); | |
204 | } | |
205 | ||
5e928f77 RW |
206 | static 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 | ||
211 | static inline int pm_runtime_get_sync(struct device *dev) | |
212 | { | |
140a6c94 | 213 | return __pm_runtime_resume(dev, RPM_GET_PUT); |
5e928f77 RW |
214 | } |
215 | ||
216 | static 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 |
221 | static 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 |
227 | static 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 |
232 | static inline int pm_runtime_put_sync_suspend(struct device *dev) |
233 | { | |
234 | return __pm_runtime_suspend(dev, RPM_GET_PUT); | |
235 | } | |
236 | ||
15bcb91d AS |
237 | static 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 |
242 | static inline int pm_runtime_set_active(struct device *dev) |
243 | { | |
244 | return __pm_runtime_set_status(dev, RPM_ACTIVE); | |
245 | } | |
246 | ||
247 | static inline void pm_runtime_set_suspended(struct device *dev) | |
248 | { | |
249 | __pm_runtime_set_status(dev, RPM_SUSPENDED); | |
250 | } | |
251 | ||
252 | static inline void pm_runtime_disable(struct device *dev) | |
253 | { | |
254 | __pm_runtime_disable(dev, true); | |
255 | } | |
256 | ||
15bcb91d AS |
257 | static inline void pm_runtime_use_autosuspend(struct device *dev) |
258 | { | |
259 | __pm_runtime_use_autosuspend(dev, true); | |
260 | } | |
261 | ||
262 | static inline void pm_runtime_dont_use_autosuspend(struct device *dev) | |
263 | { | |
264 | __pm_runtime_use_autosuspend(dev, false); | |
265 | } | |
266 | ||
5e928f77 | 267 | #endif |