[linux-2.6-block.git] / sound / xen / xen_snd_front.h

/* SPDX-License-Identifier: GPL-2.0 OR MIT */

/*
 * Xen para-virtual sound device
 *
 * Copyright (C) 2016-2018 EPAM Systems Inc.
 *
 * Author: Oleksandr Andrushchenko <oleksandr_andrushchenko@epam.com>
 */

#ifndef __XEN_SND_FRONT_H
#define __XEN_SND_FRONT_H

#include "xen_snd_front_cfg.h"

struct xen_snd_front_card_info;
struct xen_snd_front_evtchnl;
struct xen_snd_front_evtchnl_pair;
struct xen_front_pgdir_shbuf;
struct xensnd_query_hw_param;

struct xen_snd_front_info {
	struct xenbus_device *xb_dev;

	struct xen_snd_front_card_info *card_info;

	int num_evt_pairs;
	struct xen_snd_front_evtchnl_pair *evt_pairs;

	struct xen_front_cfg_card cfg;
};

int xen_snd_front_stream_query_hw_param(struct xen_snd_front_evtchnl *evtchnl,
					struct xensnd_query_hw_param *hw_param_req,
					struct xensnd_query_hw_param *hw_param_resp);

int xen_snd_front_stream_prepare(struct xen_snd_front_evtchnl *evtchnl,
				 struct xen_front_pgdir_shbuf *shbuf,
				 u8 format, unsigned int channels,
				 unsigned int rate, u32 buffer_sz,
				 u32 period_sz);

int xen_snd_front_stream_close(struct xen_snd_front_evtchnl *evtchnl);

int xen_snd_front_stream_write(struct xen_snd_front_evtchnl *evtchnl,
			       unsigned long pos, unsigned long count);

int xen_snd_front_stream_read(struct xen_snd_front_evtchnl *evtchnl,
			      unsigned long pos, unsigned long count);

int xen_snd_front_stream_trigger(struct xen_snd_front_evtchnl *evtchnl,
				 int type);

#endif /* __XEN_SND_FRONT_H */
Commit	Line	Data
cc3196ae OA	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
fd3b3604 OA	14	#include "xen_snd_front_cfg.h"
fd3b3604 OA	15
1cee5593 OA	16	struct xen_snd_front_card_info;
1cee5593 OA	17	struct xen_snd_front_evtchnl;
788ef64a	18	struct xen_snd_front_evtchnl_pair;
58f9d806	19	struct xen_front_pgdir_shbuf;
1cee5593	20	struct xensnd_query_hw_param;
788ef64a	21
cc3196ae OA	22	struct xen_snd_front_info {
cc3196ae OA	23	struct xenbus_device *xb_dev;
fd3b3604	24
1cee5593 OA	25	struct xen_snd_front_card_info *card_info;
1cee5593 OA	26
788ef64a OA	27	int num_evt_pairs;
	28	struct xen_snd_front_evtchnl_pair *evt_pairs;
	29
fd3b3604	30	struct xen_front_cfg_card cfg;
cc3196ae OA	31	};
cc3196ae OA	32
1cee5593 OA	33	int 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
	37	int xen_snd_front_stream_prepare(struct xen_snd_front_evtchnl *evtchnl,
58f9d806	38	struct xen_front_pgdir_shbuf *shbuf,
1cee5593 OA	39	u8 format, unsigned int channels,
	40	unsigned int rate, u32 buffer_sz,
	41	u32 period_sz);
	42
	43	int xen_snd_front_stream_close(struct xen_snd_front_evtchnl *evtchnl);
	44
	45	int xen_snd_front_stream_write(struct xen_snd_front_evtchnl *evtchnl,
	46	unsigned long pos, unsigned long count);
	47
	48	int xen_snd_front_stream_read(struct xen_snd_front_evtchnl *evtchnl,
	49	unsigned long pos, unsigned long count);
	50
	51	int xen_snd_front_stream_trigger(struct xen_snd_front_evtchnl *evtchnl,
	52	int type);
	53
cc3196ae	54	#endif /* __XEN_SND_FRONT_H */