Line data Source code
1 : /*
2 : * pm_wakeup.h - Power management wakeup interface
3 : *
4 : * Copyright (C) 2008 Alan Stern
5 : *
6 : * This program is free software; you can redistribute it and/or modify
7 : * it under the terms of the GNU General Public License as published by
8 : * the Free Software Foundation; either version 2 of the License, or
9 : * (at your option) any later version.
10 : *
11 : * This program is distributed in the hope that it will be useful,
12 : * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 : * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 : * GNU General Public License for more details.
15 : *
16 : * You should have received a copy of the GNU General Public License
17 : * along with this program; if not, write to the Free Software
18 : * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
19 : */
20 :
21 : #ifndef _LINUX_PM_WAKEUP_H
22 : #define _LINUX_PM_WAKEUP_H
23 :
24 : #ifndef _DEVICE_H_
25 : # error "please don't include this file directly"
26 : #endif
27 :
28 : #ifdef CONFIG_PM
29 :
30 : /* changes to device_may_wakeup take effect on the next pm state change.
31 : * by default, devices should wakeup if they can.
32 : */
33 : static inline void device_init_wakeup(struct device *dev, int val)
34 : {
35 : dev->power.can_wakeup = dev->power.should_wakeup = !!val;
36 : }
37 :
38 : static inline void device_set_wakeup_capable(struct device *dev, int val)
39 : {
40 : dev->power.can_wakeup = !!val;
41 : }
42 :
43 : static inline int device_can_wakeup(struct device *dev)
44 : {
45 : return dev->power.can_wakeup;
46 : }
47 :
48 : static inline void device_set_wakeup_enable(struct device *dev, int val)
49 : {
50 : dev->power.should_wakeup = !!val;
51 : }
52 :
53 : static inline int device_may_wakeup(struct device *dev)
54 : {
55 : return dev->power.can_wakeup && dev->power.should_wakeup;
56 : }
57 :
58 : #else /* !CONFIG_PM */
59 :
60 : /* For some reason the next two routines work even without CONFIG_PM */
61 : static inline void device_init_wakeup(struct device *dev, int val)
62 : {
63 : dev->power.can_wakeup = !!val;
64 : }
65 :
66 : static inline void device_set_wakeup_capable(struct device *dev, int val) { }
67 :
68 1 : static inline int device_can_wakeup(struct device *dev)
69 : {
70 1 : return dev->power.can_wakeup;
71 : }
72 :
73 : #define device_set_wakeup_enable(dev, val) do {} while (0)
74 : #define device_may_wakeup(dev) 0
75 :
76 : #endif /* !CONFIG_PM */
77 :
78 : #endif /* _LINUX_PM_WAKEUP_H */
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