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| author | Oleksandr Andrushchenko | 2018-05-14 08:27:41 +0200 |
|---|---|---|
| committer | Takashi Iwai | 2018-05-16 12:59:57 +0200 |
| commit | 1cee559351a7cb57b405554bac10a6f33c28ed09 (patch) | |
| tree | 13c0dc77c467e9e69681ac2138a5396a29f40924 /sound/xen/Makefile | |
| parent | ALSA: xen-front: Implement handling of shared buffers (diff) | |
| download | kernel-qcow2-linux-1cee559351a7cb57b405554bac10a6f33c28ed09.tar.gz kernel-qcow2-linux-1cee559351a7cb57b405554bac10a6f33c28ed09.tar.xz kernel-qcow2-linux-1cee559351a7cb57b405554bac10a6f33c28ed09.zip | |
ALSA: xen-front: Implement ALSA virtual sound driver
Implement essential initialization of the sound driver:
- introduce required data structures
- handle driver registration
- handle sound card registration
- register sound driver on backend connection
- remove sound driver on backend disconnect
Initialize virtual sound card with streams according to the
Xen store configuration.
Implement ALSA driver operations including:
- manage frontend/backend shared buffers
- manage Xen bus event channel states
Implement requests from front to back for ALSA
PCM operations.
- report ALSA period elapsed event: handle XENSND_EVT_CUR_POS
notifications from the backend when stream position advances
during playback/capture. The event carries a value of how
many octets were played/captured at the time of the event.
- implement explicit stream parameter negotiation between
backend and frontend: handle XENSND_OP_HW_PARAM_QUERY request
to read/update configuration space for the parameter given:
request passes desired parameter interval and the response to
this request returns min/max interval for the parameter to be used.
Signed-off-by: Oleksandr Andrushchenko <oleksandr_andrushchenko@epam.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/xen/Makefile')
| -rw-r--r-- | sound/xen/Makefile | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/sound/xen/Makefile b/sound/xen/Makefile index f028bc30af5d..1e6470ecc2f2 100644 --- a/sound/xen/Makefile +++ b/sound/xen/Makefile @@ -3,6 +3,7 @@ snd_xen_front-objs := xen_snd_front.o \ xen_snd_front_cfg.o \ xen_snd_front_evtchnl.o \ - xen_snd_front_shbuf.o + xen_snd_front_shbuf.o \ + xen_snd_front_alsa.o obj-$(CONFIG_SND_XEN_FRONTEND) += snd_xen_front.o |