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 static inline int device_can_wakeup(struct device *dev) 69 { 70 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 */ 79