#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,
  			     bool validate);
  
  #endif /* __USBAUDIO_CLOCK_H */