sound/ac97_bus.c

   1 /*
   2  * Linux driver model AC97 bus interface
   3  *
   4  * Author:      Nicolas Pitre
   5  * Created:     Jan 14, 2005
   6  * Copyright:   (C) MontaVista Software Inc.
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License as published by
  10  * the Free Software Foundation; either version 2 of the License, or
  11  * (at your option) any later version.
  12  */
  13
  14 #include <linux/module.h>
  15 #include <linux/init.h>
  16 #include <linux/device.h>
  17 #include <linux/string.h>
  18 #include <sound/ac97_codec.h>
  19
  20 /*
  21  * Let drivers decide whether they want to support given codec from their
  22  * probe method. Drivers have direct access to the struct snd_ac97
  23  * structure and may  decide based on the id field amongst other things.
  24  */
  25 static int ac97_bus_match(struct device *dev, struct device_driver *drv)
  26 {
  27         return 1;
  28 }
  29
  30 struct bus_type ac97_bus_type = {
  31         .name           = "ac97",
  32         .match          = ac97_bus_match,
  33 };
  34
  35 static int __init ac97_bus_init(void)
  36 {
  37         return bus_register(&ac97_bus_type);
  38 }
  39
  40 subsys_initcall(ac97_bus_init);
  41
  42 static void __exit ac97_bus_exit(void)
  43 {
  44         bus_unregister(&ac97_bus_type);
  45 }
  46
  47 module_exit(ac97_bus_exit);
  48
  49 EXPORT_SYMBOL(ac97_bus_type);
  50
  51 MODULE_LICENSE("GPL");