diff options
| author | Oleksandr Andrushchenko <oleksandr_andrushchenko@epam.com> | 2018-05-14 09:27:38 +0300 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2018-05-16 12:58:39 +0200 |
| commit | fd3b36045c2c612b5f44a47f388677af256d1d0a (patch) | |
| tree | 225cf95c572f3799842b1b317471652c3547c4fe /sound/xen/xen_snd_front_cfg.h | |
| parent | cc3196ae197c28cd6db0a2e9ddddc2e0aa1e694f (diff) | |
ALSA: xen-front: Read sound driver configuration from Xen store
Read configuration values from Xen store according
to xen/interface/io/sndif.h protocol:
- introduce configuration structures for different
components, e.g. sound card, device, stream
- read PCM HW parameters, e.g rate, format etc.
- detect stream type (capture/playback)
- read device and card parameters
Signed-off-by: Oleksandr Andrushchenko <oleksandr_andrushchenko@epam.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/xen/xen_snd_front_cfg.h')
| -rw-r--r-- | sound/xen/xen_snd_front_cfg.h | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/sound/xen/xen_snd_front_cfg.h b/sound/xen/xen_snd_front_cfg.h new file mode 100644 index 000000000000..2353fcc74889 --- /dev/null +++ b/sound/xen/xen_snd_front_cfg.h @@ -0,0 +1,46 @@ +/* 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_CFG_H +#define __XEN_SND_FRONT_CFG_H + +#include <sound/core.h> +#include <sound/pcm.h> + +struct xen_snd_front_info; + +struct xen_front_cfg_stream { + int index; + char *xenstore_path; + struct snd_pcm_hardware pcm_hw; +}; + +struct xen_front_cfg_pcm_instance { + char name[80]; + int device_id; + struct snd_pcm_hardware pcm_hw; + int num_streams_pb; + struct xen_front_cfg_stream *streams_pb; + int num_streams_cap; + struct xen_front_cfg_stream *streams_cap; +}; + +struct xen_front_cfg_card { + char name_short[32]; + char name_long[80]; + struct snd_pcm_hardware pcm_hw; + int num_pcm_instances; + struct xen_front_cfg_pcm_instance *pcm_instances; +}; + +int xen_snd_front_cfg_card(struct xen_snd_front_info *front_info, + int *stream_cnt); + +#endif /* __XEN_SND_FRONT_CFG_H */ |