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| author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-06 01:02:30 +0000 |
|---|---|---|
| committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-06 01:02:30 +0000 |
| commit | 76cb841cb886eef6b3bee341a2266c76578724ad (patch) | |
| tree | f5892e5ba6cc11949952a6ce4ecbe6d516d6ce58 /sound/xen/xen_snd_front.h | |
| parent | Initial commit. (diff) | |
| download | linux-76cb841cb886eef6b3bee341a2266c76578724ad.tar.xz linux-76cb841cb886eef6b3bee341a2266c76578724ad.zip | |
Adding upstream version 4.19.249.upstream/4.19.249upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'sound/xen/xen_snd_front.h')
| -rw-r--r-- | sound/xen/xen_snd_front.h | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/sound/xen/xen_snd_front.h b/sound/xen/xen_snd_front.h new file mode 100644 index 000000000..a2ea2463b --- /dev/null +++ b/sound/xen/xen_snd_front.h @@ -0,0 +1,54 @@ +/* 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_snd_front_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_snd_front_shbuf *sh_buf, + 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 */ |