* Sound core interface functions
*/
+struct device;
extern int register_sound_special(struct file_operations *fops, int unit);
+extern int register_sound_special_device(struct file_operations *fops, int unit, struct device *dev);
extern int register_sound_mixer(struct file_operations *fops, int dev);
extern int register_sound_midi(struct file_operations *fops, int dev);
extern int register_sound_dsp(struct file_operations *fops, int dev);