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 */ 89