1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef __USBAUDIO_ENDPOINT_H
3 #define __USBAUDIO_ENDPOINT_H
5 #define SND_USB_ENDPOINT_TYPE_DATA 0
6 #define SND_USB_ENDPOINT_TYPE_SYNC 1
8 struct snd_usb_endpoint *snd_usb_get_endpoint(struct snd_usb_audio *chip,
11 int snd_usb_add_endpoint(struct snd_usb_audio *chip, int ep_num, int type);
13 struct snd_usb_endpoint *
14 snd_usb_endpoint_open(struct snd_usb_audio *chip,
15 const struct audioformat *fp,
16 const struct snd_pcm_hw_params *params,
18 void snd_usb_endpoint_close(struct snd_usb_audio *chip,
19 struct snd_usb_endpoint *ep);
20 int snd_usb_endpoint_configure(struct snd_usb_audio *chip,
21 struct snd_usb_endpoint *ep);
22 void snd_usb_endpoint_suspend(struct snd_usb_endpoint *ep);
24 bool snd_usb_endpoint_compatible(struct snd_usb_audio *chip,
25 struct snd_usb_endpoint *ep,
26 const struct audioformat *fp,
27 const struct snd_pcm_hw_params *params);
29 void snd_usb_endpoint_set_sync(struct snd_usb_audio *chip,
30 struct snd_usb_endpoint *data_ep,
31 struct snd_usb_endpoint *sync_ep);
32 void snd_usb_endpoint_set_callback(struct snd_usb_endpoint *ep,
33 void (*prepare)(struct snd_usb_substream *subs,
35 void (*retire)(struct snd_usb_substream *subs,
37 struct snd_usb_substream *data_subs);
39 int snd_usb_endpoint_start(struct snd_usb_endpoint *ep);
40 void snd_usb_endpoint_stop(struct snd_usb_endpoint *ep);
41 void snd_usb_endpoint_sync_pending_stop(struct snd_usb_endpoint *ep);
42 void snd_usb_endpoint_suspend(struct snd_usb_endpoint *ep);
43 int snd_usb_endpoint_activate(struct snd_usb_endpoint *ep);
44 void snd_usb_endpoint_release(struct snd_usb_endpoint *ep);
45 void snd_usb_endpoint_free_all(struct snd_usb_audio *chip);
47 int snd_usb_endpoint_implicit_feedback_sink(struct snd_usb_endpoint *ep);
48 int snd_usb_endpoint_next_packet_size(struct snd_usb_endpoint *ep,
49 struct snd_urb_ctx *ctx, int idx);
51 #endif /* __USBAUDIO_ENDPOINT_H */