projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 9a3df1f7 AS |
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 int device_can_wakeup(struct device *dev) | |
| 39 | { | |
| 40 | return dev->power.can_wakeup; | |
| 41 | } | |
| 42 | ||
| 43 | static inline void device_set_wakeup_enable(struct device *dev, int val) | |
| 44 | { | |
| 45 | dev->power.should_wakeup = !!val; | |
| 46 | } | |
| 47 | ||
| 48 | static inline int device_may_wakeup(struct device *dev) | |
| 49 | { | |
| 50 | return dev->power.can_wakeup & dev->power.should_wakeup; | |
| 51 | } | |
| 52 | ||
| 53 | /* | |
| 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 | |
| 57 | */ | |
| 58 | extern int (*platform_enable_wakeup)(struct device *dev, int is_on); | |
| 59 | ||
| 60 | static inline int call_platform_enable_wakeup(struct device *dev, int is_on) | |
| 61 | { | |
| 62 | if (platform_enable_wakeup) | |
| 63 | return (*platform_enable_wakeup)(dev, is_on); | |
| 64 | return 0; | |
| 65 | } | |
| 66 | ||
| 67 | #else /* !CONFIG_PM */ | |
| 68 | ||
| 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) | |
| 71 | { | |
| 72 | dev->power.can_wakeup = !!val; | |
| 73 | } | |
| 74 | ||
| 75 | static inline int device_can_wakeup(struct device *dev) | |
| 76 | { | |
| 77 | return dev->power.can_wakeup; | |
| 78 | } | |
| 79 | ||
| 80 | #define device_set_wakeup_enable(dev, val) do {} while (0) | |
| 81 | #define device_may_wakeup(dev) 0 | |
| 82 | ||
| 83 | static inline int call_platform_enable_wakeup(struct device *dev, int is_on) | |
| 84 | { | |
| 85 | return 0; | |
| 86 | } | |
| 87 | ||
| 88 | #endif /* !CONFIG_PM */ | |
| 89 | ||
| 90 | #endif /* _LINUX_PM_WAKEUP_H */ |