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 * 34 * By default, most devices should leave wakeup disabled. The exceptions 35 * are devices that everyone expects to be wakeup sources: keyboards, 36 * power buttons, possibly network interfaces, etc. 37 */ 38 static inline void device_init_wakeup(struct device *dev, bool val) 39 { 40 dev->power.can_wakeup = dev->power.should_wakeup = val; 41 } 42 43 static inline void device_set_wakeup_capable(struct device *dev, bool capable) 44 { 45 dev->power.can_wakeup = capable; 46 } 47 48 static inline bool device_can_wakeup(struct device *dev) 49 { 50 return dev->power.can_wakeup; 51 } 52 53 static inline void device_set_wakeup_enable(struct device *dev, bool enable) 54 { 55 dev->power.should_wakeup = enable; 56 } 57 58 static inline bool device_may_wakeup(struct device *dev) 59 { 60 return dev->power.can_wakeup && dev->power.should_wakeup; 61 } 62 63 #else /* !CONFIG_PM */ 64 65 /* For some reason the following routines work even without CONFIG_PM */ 66 static inline void device_init_wakeup(struct device *dev, bool val) 67 { 68 dev->power.can_wakeup = val; 69 } 70 71 static inline void device_set_wakeup_capable(struct device *dev, bool capable) 72 { 73 dev->power.can_wakeup = capable; 74 } 75 76 static inline bool device_can_wakeup(struct device *dev) 77 { 78 return dev->power.can_wakeup; 79 } 80 81 static inline void device_set_wakeup_enable(struct device *dev, bool enable) 82 { 83 } 84 85 static inline bool device_may_wakeup(struct device *dev) 86 { 87 return false; 88 } 89 90 #endif /* !CONFIG_PM */ 91 92 #endif /* _LINUX_PM_WAKEUP_H */ 93