/* * 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");