Root/
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> |
13 | #include <linux/notifier.h> |
14 | #include <linux/pm.h> |
15 | |
16 | #include <linux/jiffies.h> |
17 | |
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 */ |
22 | #define RPM_GET_PUT 0x04 /* Increment/decrement the |
23 | usage_count */ |
24 | #define RPM_AUTO 0x08 /* Use autosuspend_delay */ |
25 | |
26 | #ifdef CONFIG_PM_RUNTIME |
27 | |
28 | extern struct workqueue_struct *pm_wq; |
29 | |
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); |
33 | extern int pm_schedule_suspend(struct device *dev, unsigned int delay); |
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); |
38 | extern void pm_runtime_allow(struct device *dev); |
39 | extern void pm_runtime_forbid(struct device *dev); |
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); |
43 | extern void pm_runtime_no_callbacks(struct device *dev); |
44 | extern void pm_runtime_irq_safe(struct device *dev); |
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); |
48 | extern void pm_runtime_update_max_time_suspended(struct device *dev, |
49 | s64 delta_ns); |
50 | extern void pm_runtime_set_memalloc_noio(struct device *dev, bool enable); |
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 | |
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 | |
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 | |
78 | static inline bool pm_runtime_suspended(struct device *dev) |
79 | { |
80 | return dev->power.runtime_status == RPM_SUSPENDED |
81 | && !dev->power.disable_depth; |
82 | } |
83 | |
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 | |
90 | static inline bool pm_runtime_status_suspended(struct device *dev) |
91 | { |
92 | return dev->power.runtime_status == RPM_SUSPENDED; |
93 | } |
94 | |
95 | static inline bool pm_runtime_enabled(struct device *dev) |
96 | { |
97 | return !dev->power.disable_depth; |
98 | } |
99 | |
100 | static inline bool pm_runtime_callbacks_present(struct device *dev) |
101 | { |
102 | return !dev->power.no_callbacks; |
103 | } |
104 | |
105 | static inline void pm_runtime_mark_last_busy(struct device *dev) |
106 | { |
107 | ACCESS_ONCE(dev->power.last_busy) = jiffies; |
108 | } |
109 | |
110 | #else /* !CONFIG_PM_RUNTIME */ |
111 | |
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 | } |
124 | static inline int pm_schedule_suspend(struct device *dev, unsigned int delay) |
125 | { |
126 | return -ENOSYS; |
127 | } |
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) {} |
133 | static inline void pm_runtime_allow(struct device *dev) {} |
134 | static inline void pm_runtime_forbid(struct device *dev) {} |
135 | |
136 | static inline bool pm_children_suspended(struct device *dev) { return false; } |
137 | static inline void pm_runtime_get_noresume(struct device *dev) {} |
138 | static inline void pm_runtime_put_noidle(struct device *dev) {} |
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) {} |
141 | static inline bool pm_runtime_suspended(struct device *dev) { return false; } |
142 | static inline bool pm_runtime_active(struct device *dev) { return true; } |
143 | static inline bool pm_runtime_status_suspended(struct device *dev) { return false; } |
144 | static inline bool pm_runtime_enabled(struct device *dev) { return false; } |
145 | |
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; } |
149 | static inline void pm_runtime_no_callbacks(struct device *dev) {} |
150 | static inline void pm_runtime_irq_safe(struct device *dev) {} |
151 | |
152 | static inline bool pm_runtime_callbacks_present(struct device *dev) { return false; } |
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; } |
160 | static inline void pm_runtime_set_memalloc_noio(struct device *dev, |
161 | bool enable){} |
162 | |
163 | #endif /* !CONFIG_PM_RUNTIME */ |
164 | |
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 | |
175 | static inline int pm_runtime_autosuspend(struct device *dev) |
176 | { |
177 | return __pm_runtime_suspend(dev, RPM_AUTO); |
178 | } |
179 | |
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 | |
195 | static inline int pm_request_autosuspend(struct device *dev) |
196 | { |
197 | return __pm_runtime_suspend(dev, RPM_ASYNC | RPM_AUTO); |
198 | } |
199 | |
200 | static inline int pm_runtime_get(struct device *dev) |
201 | { |
202 | return __pm_runtime_resume(dev, RPM_GET_PUT | RPM_ASYNC); |
203 | } |
204 | |
205 | static inline int pm_runtime_get_sync(struct device *dev) |
206 | { |
207 | return __pm_runtime_resume(dev, RPM_GET_PUT); |
208 | } |
209 | |
210 | static inline int pm_runtime_put(struct device *dev) |
211 | { |
212 | return __pm_runtime_idle(dev, RPM_GET_PUT | RPM_ASYNC); |
213 | } |
214 | |
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 | |
221 | static inline int pm_runtime_put_sync(struct device *dev) |
222 | { |
223 | return __pm_runtime_idle(dev, RPM_GET_PUT); |
224 | } |
225 | |
226 | static inline int pm_runtime_put_sync_suspend(struct device *dev) |
227 | { |
228 | return __pm_runtime_suspend(dev, RPM_GET_PUT); |
229 | } |
230 | |
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 | |
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 | |
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 | |
261 | #endif |
262 |
Branches:
ben-wpan
ben-wpan-stefan
javiroman/ks7010
jz-2.6.34
jz-2.6.34-rc5
jz-2.6.34-rc6
jz-2.6.34-rc7
jz-2.6.35
jz-2.6.36
jz-2.6.37
jz-2.6.38
jz-2.6.39
jz-3.0
jz-3.1
jz-3.11
jz-3.12
jz-3.13
jz-3.15
jz-3.16
jz-3.18-dt
jz-3.2
jz-3.3
jz-3.4
jz-3.5
jz-3.6
jz-3.6-rc2-pwm
jz-3.9
jz-3.9-clk
jz-3.9-rc8
jz47xx
jz47xx-2.6.38
master
Tags:
od-2011-09-04
od-2011-09-18
v2.6.34-rc5
v2.6.34-rc6
v2.6.34-rc7
v3.9