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
 8struct 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
12int 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
22int  snd_usb_endpoint_start(struct snd_usb_endpoint *ep);
23void snd_usb_endpoint_stop(struct snd_usb_endpoint *ep);
24void snd_usb_endpoint_sync_pending_stop(struct snd_usb_endpoint *ep);
25int  snd_usb_endpoint_activate(struct snd_usb_endpoint *ep);
26void snd_usb_endpoint_deactivate(struct snd_usb_endpoint *ep);
27void snd_usb_endpoint_release(struct snd_usb_endpoint *ep);
28void snd_usb_endpoint_free(struct snd_usb_endpoint *ep);
29
30int snd_usb_endpoint_implicit_feedback_sink(struct snd_usb_endpoint *ep);
31int snd_usb_endpoint_slave_next_packet_size(struct snd_usb_endpoint *ep);
32int snd_usb_endpoint_next_packet_size(struct snd_usb_endpoint *ep);
33
34void snd_usb_handle_sync_urb(struct snd_usb_endpoint *ep,
35			     struct snd_usb_endpoint *sender,
36			     const struct urb *urb);
37
38#endif /* __USBAUDIO_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_release(struct snd_usb_endpoint *ep);
27void snd_usb_endpoint_free(struct snd_usb_endpoint *ep);
28
29int snd_usb_endpoint_implicit_feedback_sink(struct snd_usb_endpoint *ep);
 
30int snd_usb_endpoint_next_packet_size(struct snd_usb_endpoint *ep);
31
32void 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 */