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/* 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 */
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