|  | #ifndef _LINUX_SOUND_H | 
|  | #define _LINUX_SOUND_H | 
|  |  | 
|  | #include <uapi/linux/sound.h> | 
|  |  | 
|  | /* | 
|  | *	Sound core interface functions | 
|  | */ | 
|  |  | 
|  | struct device; | 
|  | extern int register_sound_special(const struct file_operations *fops, int unit); | 
|  | extern int register_sound_special_device(const struct file_operations *fops, int unit, struct device *dev); | 
|  | extern int register_sound_mixer(const struct file_operations *fops, int dev); | 
|  | extern int register_sound_midi(const struct file_operations *fops, int dev); | 
|  | extern int register_sound_dsp(const struct file_operations *fops, int dev); | 
|  |  | 
|  | extern void unregister_sound_special(int unit); | 
|  | extern void unregister_sound_mixer(int unit); | 
|  | extern void unregister_sound_midi(int unit); | 
|  | extern void unregister_sound_dsp(int unit); | 
|  | #endif /* _LINUX_SOUND_H */ |