Revision 58edf8ee5e3319373dae9d9038e1a8469a83bb76 authored by Linus Torvalds on 08 February 2009, 20:35:26 UTC, committed by Linus Torvalds on 08 February 2009, 20:35:26 UTC
* git://git.kernel.org/pub/scm/linux/kernel/git/arjan/linux-2.6-async-update: async: use list_move_tail async: Rename _special -> _domain for clarity. async: Add some documentation. async: Handle kthread_run() return codes. async: Fix running list handling.
ac97_bus.c
/*
* Linux driver model AC97 bus interface
*
* Author: Nicolas Pitre
* Created: Jan 14, 2005
* Copyright: (C) MontaVista Software Inc.
*
* 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.
*/
#include <linux/module.h>
#include <linux/init.h>
#include <linux/device.h>
#include <linux/string.h>
#include <sound/ac97_codec.h>
/*
* Let drivers decide whether they want to support given codec from their
* probe method. Drivers have direct access to the struct snd_ac97 structure and may
* decide based on the id field amongst other things.
*/
static int ac97_bus_match(struct device *dev, struct device_driver *drv)
{
return 1;
}
#ifdef CONFIG_PM
static int ac97_bus_suspend(struct device *dev, pm_message_t state)
{
int ret = 0;
if (dev->driver && dev->driver->suspend)
ret = dev->driver->suspend(dev, state);
return ret;
}
static int ac97_bus_resume(struct device *dev)
{
int ret = 0;
if (dev->driver && dev->driver->resume)
ret = dev->driver->resume(dev);
return ret;
}
#endif /* CONFIG_PM */
struct bus_type ac97_bus_type = {
.name = "ac97",
.match = ac97_bus_match,
#ifdef CONFIG_PM
.suspend = ac97_bus_suspend,
.resume = ac97_bus_resume,
#endif /* CONFIG_PM */
};
static int __init ac97_bus_init(void)
{
return bus_register(&ac97_bus_type);
}
subsys_initcall(ac97_bus_init);
static void __exit ac97_bus_exit(void)
{
bus_unregister(&ac97_bus_type);
}
module_exit(ac97_bus_exit);
EXPORT_SYMBOL(ac97_bus_type);
MODULE_LICENSE("GPL");
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