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
   7 struct 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
  11 int 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
  19 int  snd_usb_endpoint_start(struct snd_usb_endpoint *ep, bool can_sleep);
  20 void snd_usb_endpoint_stop(struct snd_usb_endpoint *ep);
  21 void snd_usb_endpoint_sync_pending_stop(struct snd_usb_endpoint *ep);
  22 int  snd_usb_endpoint_activate(struct snd_usb_endpoint *ep);
  23 int  snd_usb_endpoint_deactivate(struct snd_usb_endpoint *ep);
  24 void snd_usb_endpoint_free(struct list_head *head);
  25
  26 int snd_usb_endpoint_implicit_feedback_sink(struct snd_usb_endpoint *ep);
  27 int snd_usb_endpoint_next_packet_size(struct snd_usb_endpoint *ep);
  28
  29 void snd_usb_handle_sync_urb(struct snd_usb_endpoint *ep,
  30                              struct snd_usb_endpoint *sender,
  31                              const struct urb *urb);
  32
  33 #endif /* __USBAUDIO_ENDPOINT_H */