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 | |
5e928f77 RW |
26 | #ifdef CONFIG_PM_RUNTIME |
27 | ||
28 | extern struct workqueue_struct *pm_wq; | |
29 | ||
140a6c94 AS |
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); | |
5e928f77 | 33 | extern int pm_schedule_suspend(struct device *dev, unsigned int delay); |
5e928f77 RW |
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); | |
53823639 RW |
38 | extern void pm_runtime_allow(struct device *dev); |
39 | extern void pm_runtime_forbid(struct device *dev); | |
2f60ba70 RW |
40 | extern int pm_generic_runtime_idle(struct device *dev); |
41 | extern int pm_generic_runtime_suspend(struct device *dev); | |
42 | extern int pm_generic_runtime_resume(struct device *dev); | |
7490e442 | 43 | extern void pm_runtime_no_callbacks(struct device *dev); |
c7b61de5 | 44 | extern void pm_runtime_irq_safe(struct device *dev); |
15bcb91d AS |
45 | extern void __pm_runtime_use_autosuspend(struct device *dev, bool use); |
46 | extern void pm_runtime_set_autosuspend_delay(struct device *dev, int delay); | |
47 | extern unsigned long pm_runtime_autosuspend_expiration(struct device *dev); | |
00dc9ad1 RW |
48 | extern void pm_runtime_update_max_time_suspended(struct device *dev, |
49 | s64 delta_ns); | |
e823407f | 50 | extern void pm_runtime_set_memalloc_noio(struct device *dev, bool enable); |
5e928f77 RW |
51 | |
52 | static inline bool pm_children_suspended(struct device *dev) | |
53 | { | |
54 | return dev->power.ignore_children | |
55 | || !atomic_read(&dev->power.child_count); | |
56 | } | |
57 | ||
5e928f77 RW |
58 | static inline void pm_runtime_get_noresume(struct device *dev) |
59 | { | |
60 | atomic_inc(&dev->power.usage_count); | |
61 | } | |
62 | ||
63 | static inline void pm_runtime_put_noidle(struct device *dev) | |
64 | { | |
65 | atomic_add_unless(&dev->power.usage_count, -1, 0); | |
66 | } | |
67 | ||
7a1a8eb5 RW |
68 | static inline bool device_run_wake(struct device *dev) |
69 | { | |
70 | return dev->power.run_wake; | |
71 | } | |
72 | ||
73 | static inline void device_set_run_wake(struct device *dev, bool enable) | |
74 | { | |
75 | dev->power.run_wake = enable; | |
76 | } | |
77 | ||
d690b2cd RW |
78 | static inline bool pm_runtime_suspended(struct device *dev) |
79 | { | |
f08f5a0a RW |
80 | return dev->power.runtime_status == RPM_SUSPENDED |
81 | && !dev->power.disable_depth; | |
d690b2cd RW |
82 | } |
83 | ||
fbadc58d SL |
84 | static inline bool pm_runtime_active(struct device *dev) |
85 | { | |
86 | return dev->power.runtime_status == RPM_ACTIVE | |
87 | || dev->power.disable_depth; | |
88 | } | |
89 | ||
f3393b62 KH |
90 | static inline bool pm_runtime_status_suspended(struct device *dev) |
91 | { | |
92 | return dev->power.runtime_status == RPM_SUSPENDED; | |
93 | } | |
94 | ||
4b31db8a RW |
95 | static inline bool pm_runtime_enabled(struct device *dev) |
96 | { | |
97 | return !dev->power.disable_depth; | |
98 | } | |
99 | ||
cb8f51bd RW |
100 | static inline bool pm_runtime_callbacks_present(struct device *dev) |
101 | { | |
102 | return !dev->power.no_callbacks; | |
103 | } | |
104 | ||
15bcb91d AS |
105 | static inline void pm_runtime_mark_last_busy(struct device *dev) |
106 | { | |
107 | ACCESS_ONCE(dev->power.last_busy) = jiffies; | |
108 | } | |
109 | ||
5e928f77 RW |
110 | #else /* !CONFIG_PM_RUNTIME */ |
111 | ||
140a6c94 AS |
112 | static inline int __pm_runtime_idle(struct device *dev, int rpmflags) |
113 | { | |
114 | return -ENOSYS; | |
115 | } | |
116 | static inline int __pm_runtime_suspend(struct device *dev, int rpmflags) | |
117 | { | |
118 | return -ENOSYS; | |
119 | } | |
120 | static inline int __pm_runtime_resume(struct device *dev, int rpmflags) | |
121 | { | |
122 | return 1; | |
123 | } | |
5e928f77 RW |
124 | static inline int pm_schedule_suspend(struct device *dev, unsigned int delay) |
125 | { | |
126 | return -ENOSYS; | |
127 | } | |
5e928f77 RW |
128 | static inline int __pm_runtime_set_status(struct device *dev, |
129 | unsigned int status) { return 0; } | |
130 | static inline int pm_runtime_barrier(struct device *dev) { return 0; } | |
131 | static inline void pm_runtime_enable(struct device *dev) {} | |
132 | static inline void __pm_runtime_disable(struct device *dev, bool c) {} | |
53823639 RW |
133 | static inline void pm_runtime_allow(struct device *dev) {} |
134 | static inline void pm_runtime_forbid(struct device *dev) {} | |
5e928f77 RW |
135 | |
136 | static inline bool pm_children_suspended(struct device *dev) { return false; } | |
5e928f77 RW |
137 | static inline void pm_runtime_get_noresume(struct device *dev) {} |
138 | static inline void pm_runtime_put_noidle(struct device *dev) {} | |
7a1a8eb5 RW |
139 | static inline bool device_run_wake(struct device *dev) { return false; } |
140 | static inline void device_set_run_wake(struct device *dev, bool enable) {} | |
d690b2cd | 141 | static inline bool pm_runtime_suspended(struct device *dev) { return false; } |
fbadc58d | 142 | static inline bool pm_runtime_active(struct device *dev) { return true; } |
f3393b62 | 143 | static inline bool pm_runtime_status_suspended(struct device *dev) { return false; } |
4b31db8a | 144 | static inline bool pm_runtime_enabled(struct device *dev) { return false; } |
5e928f77 | 145 | |
2f60ba70 RW |
146 | static inline int pm_generic_runtime_idle(struct device *dev) { return 0; } |
147 | static inline int pm_generic_runtime_suspend(struct device *dev) { return 0; } | |
148 | static inline int pm_generic_runtime_resume(struct device *dev) { return 0; } | |
7490e442 | 149 | static inline void pm_runtime_no_callbacks(struct device *dev) {} |
c7b61de5 | 150 | static inline void pm_runtime_irq_safe(struct device *dev) {} |
2f60ba70 | 151 | |
cb8f51bd | 152 | static inline bool pm_runtime_callbacks_present(struct device *dev) { return false; } |
15bcb91d AS |
153 | static inline void pm_runtime_mark_last_busy(struct device *dev) {} |
154 | static inline void __pm_runtime_use_autosuspend(struct device *dev, | |
155 | bool use) {} | |
156 | static inline void pm_runtime_set_autosuspend_delay(struct device *dev, | |
157 | int delay) {} | |
158 | static inline unsigned long pm_runtime_autosuspend_expiration( | |
159 | struct device *dev) { return 0; } | |
e823407f ML |
160 | static inline void pm_runtime_set_memalloc_noio(struct device *dev, |
161 | bool enable){} | |
15bcb91d | 162 | |
5e928f77 RW |
163 | #endif /* !CONFIG_PM_RUNTIME */ |
164 | ||
140a6c94 AS |
165 | static inline int pm_runtime_idle(struct device *dev) |
166 | { | |
167 | return __pm_runtime_idle(dev, 0); | |
168 | } | |
169 | ||
170 | static inline int pm_runtime_suspend(struct device *dev) | |
171 | { | |
172 | return __pm_runtime_suspend(dev, 0); | |
173 | } | |
174 | ||
15bcb91d AS |
175 | static inline int pm_runtime_autosuspend(struct device *dev) |
176 | { | |
177 | return __pm_runtime_suspend(dev, RPM_AUTO); | |
178 | } | |
179 | ||
140a6c94 AS |
180 | static inline int pm_runtime_resume(struct device *dev) |
181 | { | |
182 | return __pm_runtime_resume(dev, 0); | |
183 | } | |
184 | ||
185 | static inline int pm_request_idle(struct device *dev) | |
186 | { | |
187 | return __pm_runtime_idle(dev, RPM_ASYNC); | |
188 | } | |
189 | ||
190 | static inline int pm_request_resume(struct device *dev) | |
191 | { | |
192 | return __pm_runtime_resume(dev, RPM_ASYNC); | |
193 | } | |
194 | ||
5fc62aad ML |
195 | static inline int pm_request_autosuspend(struct device *dev) |
196 | { | |
197 | return __pm_runtime_suspend(dev, RPM_ASYNC | RPM_AUTO); | |
198 | } | |
199 | ||
5e928f77 RW |
200 | static inline int pm_runtime_get(struct device *dev) |
201 | { | |
140a6c94 | 202 | return __pm_runtime_resume(dev, RPM_GET_PUT | RPM_ASYNC); |
5e928f77 RW |
203 | } |
204 | ||
205 | static inline int pm_runtime_get_sync(struct device *dev) | |
206 | { | |
140a6c94 | 207 | return __pm_runtime_resume(dev, RPM_GET_PUT); |
5e928f77 RW |
208 | } |
209 | ||
210 | static inline int pm_runtime_put(struct device *dev) | |
211 | { | |
140a6c94 | 212 | return __pm_runtime_idle(dev, RPM_GET_PUT | RPM_ASYNC); |
5e928f77 RW |
213 | } |
214 | ||
15bcb91d AS |
215 | static inline int pm_runtime_put_autosuspend(struct device *dev) |
216 | { | |
217 | return __pm_runtime_suspend(dev, | |
218 | RPM_GET_PUT | RPM_ASYNC | RPM_AUTO); | |
219 | } | |
220 | ||
5e928f77 RW |
221 | static inline int pm_runtime_put_sync(struct device *dev) |
222 | { | |
140a6c94 | 223 | return __pm_runtime_idle(dev, RPM_GET_PUT); |
5e928f77 RW |
224 | } |
225 | ||
c7b61de5 AS |
226 | static inline int pm_runtime_put_sync_suspend(struct device *dev) |
227 | { | |
228 | return __pm_runtime_suspend(dev, RPM_GET_PUT); | |
229 | } | |
230 | ||
15bcb91d AS |
231 | static inline int pm_runtime_put_sync_autosuspend(struct device *dev) |
232 | { | |
233 | return __pm_runtime_suspend(dev, RPM_GET_PUT | RPM_AUTO); | |
234 | } | |
235 | ||
5e928f77 RW |
236 | static inline int pm_runtime_set_active(struct device *dev) |
237 | { | |
238 | return __pm_runtime_set_status(dev, RPM_ACTIVE); | |
239 | } | |
240 | ||
241 | static inline void pm_runtime_set_suspended(struct device *dev) | |
242 | { | |
243 | __pm_runtime_set_status(dev, RPM_SUSPENDED); | |
244 | } | |
245 | ||
246 | static inline void pm_runtime_disable(struct device *dev) | |
247 | { | |
248 | __pm_runtime_disable(dev, true); | |
249 | } | |
250 | ||
15bcb91d AS |
251 | static inline void pm_runtime_use_autosuspend(struct device *dev) |
252 | { | |
253 | __pm_runtime_use_autosuspend(dev, true); | |
254 | } | |
255 | ||
256 | static inline void pm_runtime_dont_use_autosuspend(struct device *dev) | |
257 | { | |
258 | __pm_runtime_use_autosuspend(dev, false); | |
259 | } | |
260 | ||
5e928f77 | 261 | #endif |