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/* 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 */