91 lines
2.4 KiB
C
91 lines
2.4 KiB
C
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/*
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* pm_wakeup.h - Power management wakeup interface
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*
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* Copyright (C) 2008 Alan Stern
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#ifndef _LINUX_PM_WAKEUP_H
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#define _LINUX_PM_WAKEUP_H
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#ifndef _DEVICE_H_
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# error "please don't include this file directly"
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#endif
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#ifdef CONFIG_PM
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/* changes to device_may_wakeup take effect on the next pm state change.
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* by default, devices should wakeup if they can.
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*/
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static inline void device_init_wakeup(struct device *dev, int val)
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{
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dev->power.can_wakeup = dev->power.should_wakeup = !!val;
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}
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static inline int device_can_wakeup(struct device *dev)
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{
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return dev->power.can_wakeup;
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}
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static inline void device_set_wakeup_enable(struct device *dev, int val)
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{
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dev->power.should_wakeup = !!val;
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}
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static inline int device_may_wakeup(struct device *dev)
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{
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return dev->power.can_wakeup & dev->power.should_wakeup;
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}
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/*
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* Platform hook to activate device wakeup capability, if that's not already
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* handled by enable_irq_wake() etc.
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* Returns zero on success, else negative errno
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*/
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extern int (*platform_enable_wakeup)(struct device *dev, int is_on);
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static inline int call_platform_enable_wakeup(struct device *dev, int is_on)
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{
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if (platform_enable_wakeup)
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return (*platform_enable_wakeup)(dev, is_on);
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return 0;
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}
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#else /* !CONFIG_PM */
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/* For some reason the next two routines work even without CONFIG_PM */
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static inline void device_init_wakeup(struct device *dev, int val)
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{
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dev->power.can_wakeup = !!val;
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}
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static inline int device_can_wakeup(struct device *dev)
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{
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return dev->power.can_wakeup;
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}
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#define device_set_wakeup_enable(dev, val) do {} while (0)
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#define device_may_wakeup(dev) 0
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static inline int call_platform_enable_wakeup(struct device *dev, int is_on)
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{
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return 0;
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}
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#endif /* !CONFIG_PM */
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#endif /* _LINUX_PM_WAKEUP_H */
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