LXR linux/sound/usb/endpoint.h

   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 period_frames,
  16                                unsigned int buffer_periods,
  17                                unsigned int rate,
  18                                struct audioformat *fmt,
  19                                struct snd_usb_endpoint *sync_ep);
  20
  21int  snd_usb_endpoint_start(struct snd_usb_endpoint *ep, bool can_sleep);
  22void snd_usb_endpoint_stop(struct snd_usb_endpoint *ep);
  23void snd_usb_endpoint_sync_pending_stop(struct snd_usb_endpoint *ep);
  24int  snd_usb_endpoint_activate(struct snd_usb_endpoint *ep);
  25void snd_usb_endpoint_deactivate(struct snd_usb_endpoint *ep);
  26void snd_usb_endpoint_free(struct list_head *head);
  27
  28int snd_usb_endpoint_implicit_feedback_sink(struct snd_usb_endpoint *ep);
  29int snd_usb_endpoint_next_packet_size(struct snd_usb_endpoint *ep);
  30
  31void snd_usb_handle_sync_urb(struct snd_usb_endpoint *ep,
  32                             struct snd_usb_endpoint *sender,
  33                             const struct urb *urb);
  34
  35#endif /* __USBAUDIO_ENDPOINT_H */
  36