1 /* SPDX-License-Identifier: GPL-2.0 */ 2 #ifndef __USBAUDIO_ENDPOINT_H 3 #define __USBAUDIO_ENDPOINT_H 4 5 #define SND_USB_ENDPOINT_TYPE_DATA 0 6 #define SND_USB_ENDPOINT_TYPE_SYNC 1 7 8 struct snd_usb_endpoint *snd_usb_add_endpoint(struct snd_usb_audio *chip, 9 struct usb_host_interface *alts, 10 int ep_num, int direction, int type); 11 12 int snd_usb_endpoint_set_params(struct snd_usb_endpoint *ep, 13 snd_pcm_format_t pcm_format, 14 unsigned int channels, 15 unsigned int period_bytes, 16 unsigned int period_frames, 17 unsigned int buffer_periods, 18 unsigned int rate, 19 struct audioformat *fmt, 20 struct snd_usb_endpoint *sync_ep); 21 22 int snd_usb_endpoint_start(struct snd_usb_endpoint *ep); 23 void snd_usb_endpoint_stop(struct snd_usb_endpoint *ep); 24 void snd_usb_endpoint_sync_pending_stop(struct snd_usb_endpoint *ep); 25 int snd_usb_endpoint_activate(struct snd_usb_endpoint *ep); 26 void snd_usb_endpoint_deactivate(struct snd_usb_endpoint *ep); 27 void snd_usb_endpoint_release(struct snd_usb_endpoint *ep); 28 void snd_usb_endpoint_free(struct snd_usb_endpoint *ep); 29 30 int snd_usb_endpoint_implicit_feedback_sink(struct snd_usb_endpoint *ep); 31 int snd_usb_endpoint_next_packet_size(struct snd_usb_endpoint *ep); 32 33 void snd_usb_handle_sync_urb(struct snd_usb_endpoint *ep, 34 struct snd_usb_endpoint *sender, 35 const struct urb *urb); 36 37 #endif /* __USBAUDIO_ENDPOINT_H */ 38