[0/1] ALSA: virtio: add support for audio controls

Message ID	20220307194716.1517565-1-anton.yakovlev@opensynergy.com
Headers	show Return-Path: <alsa-devel-bounces@alsa-project.org> From: Anton Yakovlev <anton.yakovlev@opensynergy.com> To: virtualization@lists.linux-foundation.org, alsa-devel@alsa-project.org, virtio-dev@lists.oasis-open.org Subject: [PATCH 0/1] ALSA: virtio: add support for audio controls Date: Mon, 7 Mar 2022 20:47:14 +0100 Message-Id: <20220307194716.1517565-1-anton.yakovlev@opensynergy.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit MIME-Version: 1.0 Cc: "Michael S. Tsirkin" <mst@redhat.com>, Jason Wang <jasowang@redhat.com>, linux-kernel@vger.kernel.org, Takashi Iwai <tiwai@suse.com>, Anton Yakovlev <anton.yakovlev@opensynergy.com> Precedence: list Errors-To: alsa-devel-bounces@alsa-project.org Sender: "Alsa-devel" <alsa-devel-bounces@alsa-project.org>
Series	ALSA: virtio: add support for audio controls \| expand [0/1] ALSA: virtio: add support for audio controls [1/1] ALSA: virtio: add support for audio controls

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20220307194716.1517565-1-anton.yakovlev@opensynergy.com

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From: Anton Yakovlev <anton.yakovlev@opensynergy.com>
To: virtualization@lists.linux-foundation.org, alsa-devel@alsa-project.org,
 virtio-dev@lists.oasis-open.org
Subject: [PATCH 0/1] ALSA: virtio: add support for audio controls
Date: Mon,  7 Mar 2022 20:47:14 +0100
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Series

ALSA: virtio: add support for audio controls | expand

Message

Anton Yakovlev March 7, 2022, 7:47 p.m. UTC

Implementation of support for audio controls in accordance with the
proposed extension of the virtio sound device specification [1].

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