#ifndef __USBAUDIO_CLOCK_H
  #define __USBAUDIO_CLOCK_H
  
  int snd_usb_init_sample_rate(struct snd_usb_audio *chip, int iface,
  			     struct usb_host_interface *alts,
  			     struct audioformat *fmt, int rate);

  int snd_usb_clock_find_source(struct snd_usb_audio *chip, int entity_id);

  
  #endif /* __USBAUDIO_CLOCK_H */