/*
 *  pm_wakeup.h - Power management wakeup interface
 *
 *  Copyright (C) 2008 Alan Stern
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  (at your option) any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

#ifndef _LINUX_PM_WAKEUP_H
#define _LINUX_PM_WAKEUP_H

#ifndef _DEVICE_H_
# error "please don't include this file directly"
#endif

#include <linux/types.h>

#ifdef CONFIG_PM

/* Changes to device_may_wakeup take effect on the next pm state change.
 *
 * By default, most devices should leave wakeup disabled.  The exceptions
 * are devices that everyone expects to be wakeup sources: keyboards,
 * power buttons, possibly network interfaces, etc.
 */
static inline void device_init_wakeup(struct device *dev, bool val)
{
	dev->power.can_wakeup = dev->power.should_wakeup = val;
}

static inline void device_set_wakeup_capable(struct device *dev, bool capable)
{
	dev->power.can_wakeup = capable;
}

static inline bool device_can_wakeup(struct device *dev)
{
	return dev->power.can_wakeup;
}

static inline void device_set_wakeup_enable(struct device *dev, bool enable)
{
	dev->power.should_wakeup = enable;
}

static inline bool device_may_wakeup(struct device *dev)
{
	return dev->power.can_wakeup && dev->power.should_wakeup;
}

#else /* !CONFIG_PM */

/* For some reason the following routines work even without CONFIG_PM */
static inline void device_init_wakeup(struct device *dev, bool val)
{
	dev->power.can_wakeup = val;
}

static inline void device_set_wakeup_capable(struct device *dev, bool capable)
{
	dev->power.can_wakeup = capable;
}

static inline bool device_can_wakeup(struct device *dev)
{
	return dev->power.can_wakeup;
}

static inline void device_set_wakeup_enable(struct device *dev, bool enable)
{
}

static inline bool device_may_wakeup(struct device *dev)
{
	return false;
}

#endif /* !CONFIG_PM */

#endif /* _LINUX_PM_WAKEUP_H */
