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_get_endpoint(struct snd_usb_audio *chip,
9					      int ep_num);
10
11int snd_usb_add_endpoint(struct snd_usb_audio *chip, int ep_num, int type);
12
13struct snd_usb_endpoint *
14snd_usb_endpoint_open(struct snd_usb_audio *chip,
15		      const struct audioformat *fp,
16		      const struct snd_pcm_hw_params *params,
17		      bool is_sync_ep,
18		      bool fixed_rate);
19void snd_usb_endpoint_close(struct snd_usb_audio *chip,
20			    struct snd_usb_endpoint *ep);
21int snd_usb_endpoint_set_params(struct snd_usb_audio *chip,
22				struct snd_usb_endpoint *ep);
23int snd_usb_endpoint_prepare(struct snd_usb_audio *chip,
24			     struct snd_usb_endpoint *ep);
25int snd_usb_endpoint_get_clock_rate(struct snd_usb_audio *chip, int clock);
26
27bool snd_usb_endpoint_compatible(struct snd_usb_audio *chip,
28				 struct snd_usb_endpoint *ep,
29				 const struct audioformat *fp,
30				 const struct snd_pcm_hw_params *params);
31
32void snd_usb_endpoint_set_sync(struct snd_usb_audio *chip,
33			       struct snd_usb_endpoint *data_ep,
34			       struct snd_usb_endpoint *sync_ep);
35void snd_usb_endpoint_set_callback(struct snd_usb_endpoint *ep,
36				   int (*prepare)(struct snd_usb_substream *subs,
37						  struct urb *urb,
38						  bool in_stream_lock),
39				   void (*retire)(struct snd_usb_substream *subs,
40						  struct urb *urb),
41				   struct snd_usb_substream *data_subs);
42
43int snd_usb_endpoint_start(struct snd_usb_endpoint *ep);
44void snd_usb_endpoint_stop(struct snd_usb_endpoint *ep, bool keep_pending);
45void snd_usb_endpoint_sync_pending_stop(struct snd_usb_endpoint *ep);
46void snd_usb_endpoint_suspend(struct snd_usb_endpoint *ep);
47void snd_usb_endpoint_release(struct snd_usb_endpoint *ep);
48void snd_usb_endpoint_free_all(struct snd_usb_audio *chip);
49
50int snd_usb_endpoint_implicit_feedback_sink(struct snd_usb_endpoint *ep);
51int snd_usb_endpoint_next_packet_size(struct snd_usb_endpoint *ep,
52				      struct snd_urb_ctx *ctx, int idx,
53				      unsigned int avail);
54int snd_usb_queue_pending_output_urbs(struct snd_usb_endpoint *ep,
55				      bool in_stream_lock);
56
57#endif /* __USBAUDIO_ENDPOINT_H */
58