From: Anton Yakovlev <anton.yakovlev@opensynergy.com>

Implementation of support for audio controls in accordance with the
extension of the virtio sound device specification[1] planned for
virtio-v1.3-cs01.

Design　of virtual audio controls is based on and derived from ALSA
audio controls. It allows the driver to perform all standard operations,
such as reading and writing audio control value, as well as working with
metadata (represented in the TLV form).

The driver part was tested on top of the Linux 5.10 kernel.

As a device part was used OpenSynergy proprietary implementation.

[1] https://lists.oasis-open.org/archives/virtio-comment/202104/msg00013.html

Anton Yakovlev (1):
  ALSA: virtio: add support for audio controls

 include/uapi/linux/virtio_snd.h | 154 +++++++++++
 sound/virtio/Makefile           |   1 +
 sound/virtio/virtio_card.c      |  21 ++
 sound/virtio/virtio_card.h      |  22 ++
 sound/virtio/virtio_kctl.c      | 464 ++++++++++++++++++++++++++++++++
 5 files changed, 662 insertions(+)
 create mode 100644 sound/virtio/virtio_kctl.c

-- 
2.25.1

Hi Aiswarya,

I was looking into VirtIO audio controls support in Linux and came across this patch series, which seems to be marked "archived" on patchwork [0]. I would love to be able to use this with mainline Linux. I'm wondering about the status of this series - is the feature still under development, or are there some concerns that need to be addressed?

I'd be more than happy to help with testing.

Thanks for any insights or updates you can offer.

Regards,
Marcin Radomski

[0] https://patchwork.kernel.org/project/alsa-devel/patch/20230209115916.917569-2-aiswarya.cyriac@opensynergy.com/