1/* SPDX-License-Identifier: GPL-2.0 OR MIT */
 2
 3/*
 4 * Xen para-virtual sound device
 5 *
 6 * Copyright (C) 2016-2018 EPAM Systems Inc.
 7 *
 8 * Author: Oleksandr Andrushchenko <oleksandr_andrushchenko@epam.com>
 9 */
10
11#ifndef __XEN_SND_FRONT_H
12#define __XEN_SND_FRONT_H
13
14#include "xen_snd_front_cfg.h"
15
16struct xen_snd_front_card_info;
17struct xen_snd_front_evtchnl;
18struct xen_snd_front_evtchnl_pair;
19struct xen_front_pgdir_shbuf;
20struct xensnd_query_hw_param;
21
22struct xen_snd_front_info {
23	struct xenbus_device *xb_dev;
24
25	struct xen_snd_front_card_info *card_info;
26
27	int num_evt_pairs;
28	struct xen_snd_front_evtchnl_pair *evt_pairs;
29
30	struct xen_front_cfg_card cfg;
31};
32
33int xen_snd_front_stream_query_hw_param(struct xen_snd_front_evtchnl *evtchnl,
34					struct xensnd_query_hw_param *hw_param_req,
35					struct xensnd_query_hw_param *hw_param_resp);
36
37int xen_snd_front_stream_prepare(struct xen_snd_front_evtchnl *evtchnl,
38				 struct xen_front_pgdir_shbuf *shbuf,
39				 u8 format, unsigned int channels,
40				 unsigned int rate, u32 buffer_sz,
41				 u32 period_sz);
42
43int xen_snd_front_stream_close(struct xen_snd_front_evtchnl *evtchnl);
44
45int xen_snd_front_stream_write(struct xen_snd_front_evtchnl *evtchnl,
46			       unsigned long pos, unsigned long count);
47
48int xen_snd_front_stream_read(struct xen_snd_front_evtchnl *evtchnl,
49			      unsigned long pos, unsigned long count);
50
51int xen_snd_front_stream_trigger(struct xen_snd_front_evtchnl *evtchnl,
52				 int type);
53
54#endif /* __XEN_SND_FRONT_H */

 1/* SPDX-License-Identifier: GPL-2.0 OR MIT */
 2
 3/*
 4 * Xen para-virtual sound device
 5 *
 6 * Copyright (C) 2016-2018 EPAM Systems Inc.
 7 *
 8 * Author: Oleksandr Andrushchenko <oleksandr_andrushchenko@epam.com>
 9 */
10
11#ifndef __XEN_SND_FRONT_H
12#define __XEN_SND_FRONT_H
13
14#include "xen_snd_front_cfg.h"
15
16struct xen_snd_front_card_info;
17struct xen_snd_front_evtchnl;
18struct xen_snd_front_evtchnl_pair;
19struct xen_front_pgdir_shbuf;
20struct xensnd_query_hw_param;
21
22struct xen_snd_front_info {
23	struct xenbus_device *xb_dev;
24
25	struct xen_snd_front_card_info *card_info;
26
27	int num_evt_pairs;
28	struct xen_snd_front_evtchnl_pair *evt_pairs;
29
30	struct xen_front_cfg_card cfg;
31};
32
33int xen_snd_front_stream_query_hw_param(struct xen_snd_front_evtchnl *evtchnl,
34					struct xensnd_query_hw_param *hw_param_req,
35					struct xensnd_query_hw_param *hw_param_resp);
36
37int xen_snd_front_stream_prepare(struct xen_snd_front_evtchnl *evtchnl,
38				 struct xen_front_pgdir_shbuf *shbuf,
39				 u8 format, unsigned int channels,
40				 unsigned int rate, u32 buffer_sz,
41				 u32 period_sz);
42
43int xen_snd_front_stream_close(struct xen_snd_front_evtchnl *evtchnl);
44
45int xen_snd_front_stream_write(struct xen_snd_front_evtchnl *evtchnl,
46			       unsigned long pos, unsigned long count);
47
48int xen_snd_front_stream_read(struct xen_snd_front_evtchnl *evtchnl,
49			      unsigned long pos, unsigned long count);
50
51int xen_snd_front_stream_trigger(struct xen_snd_front_evtchnl *evtchnl,
52				 int type);
53
54#endif /* __XEN_SND_FRONT_H */