include/linux/pm_wakeup.h

   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 #include <linux/types.h>
  29
  30 #ifdef CONFIG_PM
  31
  32 /* changes to device_may_wakeup take effect on the next pm state change.
  33  * by default, devices should wakeup if they can.
  34  */
  35 static inline void device_init_wakeup(struct device *dev, bool val)
  36 {
  37         dev->power.can_wakeup = dev->power.should_wakeup = val;
  38 }
  39
  40 static inline void device_set_wakeup_capable(struct device *dev, bool capable)
  41 {
  42         dev->power.can_wakeup = capable;
  43 }
  44
  45 static inline bool device_can_wakeup(struct device *dev)
  46 {
  47         return dev->power.can_wakeup;
  48 }
  49
  50 static inline void device_set_wakeup_enable(struct device *dev, bool enable)
  51 {
  52         dev->power.should_wakeup = enable;
  53 }
  54
  55 static inline bool device_may_wakeup(struct device *dev)
  56 {
  57         return dev->power.can_wakeup && dev->power.should_wakeup;
  58 }
  59
  60 #else /* !CONFIG_PM */
  61
  62 /* For some reason the next two routines work even without CONFIG_PM */
  63 static inline void device_init_wakeup(struct device *dev, bool val)
  64 {
  65         dev->power.can_wakeup = val;
  66 }
  67
  68 static inline void device_set_wakeup_capable(struct device *dev, bool capable)
  69 {
  70 }
  71
  72 static inline bool device_can_wakeup(struct device *dev)
  73 {
  74         return dev->power.can_wakeup;
  75 }
  76
  77 static inline void device_set_wakeup_enable(struct device *dev, bool enable)
  78 {
  79 }
  80
  81 static inline bool device_may_wakeup(struct device *dev)
  82 {
  83         return false;
  84 }
  85
  86 #endif /* !CONFIG_PM */
  87
  88 #endif /* _LINUX_PM_WAKEUP_H */