linux/sound/usb/endpoint.h
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   1#ifndef __USBAUDIO_ENDPOINT_H
   2#define __USBAUDIO_ENDPOINT_H
   3
   4#define SND_USB_ENDPOINT_TYPE_DATA     0
   5#define SND_USB_ENDPOINT_TYPE_SYNC     1
   6
   7struct snd_usb_endpoint *snd_usb_add_endpoint(struct snd_usb_audio *chip,
   8                                              struct usb_host_interface *alts,
   9                                              int ep_num, int direction, int type);
  10
  11int snd_usb_endpoint_set_params(struct snd_usb_endpoint *ep,
  12                                snd_pcm_format_t pcm_format,
  13                                unsigned int channels,
  14                                unsigned int period_bytes,
  15                                unsigned int rate,
  16                                struct audioformat *fmt,
  17                                struct snd_usb_endpoint *sync_ep);
  18
  19int  snd_usb_endpoint_start(struct snd_usb_endpoint *ep, int can_sleep);
  20void snd_usb_endpoint_stop(struct snd_usb_endpoint *ep,
  21                           int force, int can_sleep, int wait);
  22void snd_usb_endpoint_sync_pending_stop(struct snd_usb_endpoint *ep);
  23int  snd_usb_endpoint_activate(struct snd_usb_endpoint *ep);
  24int  snd_usb_endpoint_deactivate(struct snd_usb_endpoint *ep);
  25void snd_usb_endpoint_free(struct list_head *head);
  26
  27int snd_usb_endpoint_implict_feedback_sink(struct snd_usb_endpoint *ep);
  28int snd_usb_endpoint_next_packet_size(struct snd_usb_endpoint *ep);
  29
  30void snd_usb_handle_sync_urb(struct snd_usb_endpoint *ep,
  31                             struct snd_usb_endpoint *sender,
  32                             const struct urb *urb);
  33
  34#endif /* __USBAUDIO_ENDPOINT_H */
  35
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