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 period_frames, 16 unsigned int buffer_periods, 17 unsigned int rate, 18 struct audioformat *fmt, 19 struct snd_usb_endpoint *sync_ep); 20 21 int snd_usb_endpoint_start(struct snd_usb_endpoint *ep, bool can_sleep); 22 void snd_usb_endpoint_stop(struct snd_usb_endpoint *ep); 23 void snd_usb_endpoint_sync_pending_stop(struct snd_usb_endpoint *ep); 24 int snd_usb_endpoint_activate(struct snd_usb_endpoint *ep); 25 void snd_usb_endpoint_deactivate(struct snd_usb_endpoint *ep); 26 void snd_usb_endpoint_release(struct snd_usb_endpoint *ep); 27 void snd_usb_endpoint_free(struct list_head *head); 28 29 int snd_usb_endpoint_implicit_feedback_sink(struct snd_usb_endpoint *ep); 30 int snd_usb_endpoint_next_packet_size(struct snd_usb_endpoint *ep); 31 32 void snd_usb_handle_sync_urb(struct snd_usb_endpoint *ep, 33 struct snd_usb_endpoint *sender, 34 const struct urb *urb); 35 36 #endif /* __USBAUDIO_ENDPOINT_H */ 37