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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);
18void snd_usb_endpoint_close(struct snd_usb_audio *chip,
19 struct snd_usb_endpoint *ep);
20int snd_usb_endpoint_configure(struct snd_usb_audio *chip,
21 struct snd_usb_endpoint *ep);
22
23bool snd_usb_endpoint_compatible(struct snd_usb_audio *chip,
24 struct snd_usb_endpoint *ep,
25 const struct audioformat *fp,
26 const struct snd_pcm_hw_params *params);
27
28void snd_usb_endpoint_set_sync(struct snd_usb_audio *chip,
29 struct snd_usb_endpoint *data_ep,
30 struct snd_usb_endpoint *sync_ep);
31void snd_usb_endpoint_set_callback(struct snd_usb_endpoint *ep,
32 void (*prepare)(struct snd_usb_substream *subs,
33 struct urb *urb),
34 void (*retire)(struct snd_usb_substream *subs,
35 struct urb *urb),
36 struct snd_usb_substream *data_subs);
37
38int snd_usb_endpoint_start(struct snd_usb_endpoint *ep);
39void snd_usb_endpoint_stop(struct snd_usb_endpoint *ep);
40void snd_usb_endpoint_sync_pending_stop(struct snd_usb_endpoint *ep);
41void snd_usb_endpoint_suspend(struct snd_usb_endpoint *ep);
42int snd_usb_endpoint_activate(struct snd_usb_endpoint *ep);
43void snd_usb_endpoint_release(struct snd_usb_endpoint *ep);
44void snd_usb_endpoint_free_all(struct snd_usb_audio *chip);
45
46int snd_usb_endpoint_implicit_feedback_sink(struct snd_usb_endpoint *ep);
47int snd_usb_endpoint_next_packet_size(struct snd_usb_endpoint *ep,
48 struct snd_urb_ctx *ctx, int idx);
49
50#endif /* __USBAUDIO_ENDPOINT_H */
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);
47int snd_usb_endpoint_activate(struct snd_usb_endpoint *ep);
48void snd_usb_endpoint_release(struct snd_usb_endpoint *ep);
49void snd_usb_endpoint_free_all(struct snd_usb_audio *chip);
50
51int snd_usb_endpoint_implicit_feedback_sink(struct snd_usb_endpoint *ep);
52int snd_usb_endpoint_next_packet_size(struct snd_usb_endpoint *ep,
53 struct snd_urb_ctx *ctx, int idx,
54 unsigned int avail);
55void snd_usb_queue_pending_output_urbs(struct snd_usb_endpoint *ep,
56 bool in_stream_lock);
57
58#endif /* __USBAUDIO_ENDPOINT_H */