2 * pm_wakeup.h - Power management wakeup interface
4 * Copyright (C) 2008 Alan Stern
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.
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.
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
21 #ifndef _LINUX_PM_WAKEUP_H
22 #define _LINUX_PM_WAKEUP_H
25 # error "please don't include this file directly"
30 /* changes to device_may_wakeup take effect on the next pm state change.
31 * by default, devices should wakeup if they can.
33 static inline void device_init_wakeup(struct device *dev, int val)
35 dev->power.can_wakeup = dev->power.should_wakeup = !!val;
38 static inline int device_can_wakeup(struct device *dev)
40 return dev->power.can_wakeup;
43 static inline void device_set_wakeup_enable(struct device *dev, int val)
45 dev->power.should_wakeup = !!val;
48 static inline int device_may_wakeup(struct device *dev)
50 return dev->power.can_wakeup & dev->power.should_wakeup;
54 * Platform hook to activate device wakeup capability, if that's not already
55 * handled by enable_irq_wake() etc.
56 * Returns zero on success, else negative errno
58 extern int (*platform_enable_wakeup)(struct device *dev, int is_on);
60 static inline int call_platform_enable_wakeup(struct device *dev, int is_on)
62 if (platform_enable_wakeup)
63 return (*platform_enable_wakeup)(dev, is_on);
67 #else /* !CONFIG_PM */
69 /* For some reason the next two routines work even without CONFIG_PM */
70 static inline void device_init_wakeup(struct device *dev, int val)
72 dev->power.can_wakeup = !!val;
75 static inline int device_can_wakeup(struct device *dev)
77 return dev->power.can_wakeup;
80 #define device_set_wakeup_enable(dev, val) do {} while (0)
81 #define device_may_wakeup(dev) 0
83 static inline int call_platform_enable_wakeup(struct device *dev, int is_on)
88 #endif /* !CONFIG_PM */
90 #endif /* _LINUX_PM_WAKEUP_H */