This series implements a driver part of the virtio sound device specification v8 [1].
The driver supports PCM playback and capture substreams, jack and channel map controls. A message-based transport is used to write/read PCM frames to/from a device.
The series is based (and was actually tested) on Linus's master branch [2], on top of
commit 1e2a199f6ccd ("Merge tag 'spi-fix-v5.11-rc4' of ...")
As a device part was used OpenSynergy proprietary implementation.
Any comments are very welcome.
v1->v2 changes:
1. For some reason, in the previous patch series, several patches were squashed. Fixed this issue to make the review easier. 2. Added mst@redhat.com to the MAINTAINERS. 3. When creating virtqueues, now only the event virtqueue is disabled. It's enabled only after successful initialization of the device. 4. Added additional comments to the reset worker function: [2/9] virtio_card.c:virtsnd_reset_fn() 5. Added check that VIRTIO_F_VERSION_1 feature bit is set. 6. Added additional comments to the device removing function: [2/9] virtio_card.c:virtsnd_remove() 7. Added additional comments to the tx/rx interrupt handler: [5/9] virtio_pcm_msg.c:virtsnd_pcm_msg_complete() 8. Added additional comments to substream release wait function. [6/9] virtio_pcm_ops.c:virtsnd_pcm_released()
[1] https://lists.oasis-open.org/archives/virtio-dev/202003/msg00185.html [2] https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
Anton Yakovlev (9): uapi: virtio_ids: add a sound device type ID from OASIS spec ALSA: virtio: add virtio sound driver ALSA: virtio: handling control messages ALSA: virtio: build PCM devices and substream hardware descriptors ALSA: virtio: handling control and I/O messages for the PCM device ALSA: virtio: PCM substream operators ALSA: virtio: introduce jack support ALSA: virtio: introduce PCM channel map support ALSA: virtio: introduce device suspend/resume support
MAINTAINERS | 9 + include/uapi/linux/virtio_ids.h | 1 + include/uapi/linux/virtio_snd.h | 361 ++++++++++++++++++++ sound/Kconfig | 2 + sound/Makefile | 3 +- sound/virtio/Kconfig | 10 + sound/virtio/Makefile | 13 + sound/virtio/virtio_card.c | 577 +++++++++++++++++++++++++++++++ sound/virtio/virtio_card.h | 121 +++++++ sound/virtio/virtio_chmap.c | 237 +++++++++++++ sound/virtio/virtio_ctl_msg.c | 293 ++++++++++++++++ sound/virtio/virtio_ctl_msg.h | 122 +++++++ sound/virtio/virtio_jack.c | 255 ++++++++++++++ sound/virtio/virtio_pcm.c | 582 ++++++++++++++++++++++++++++++++ sound/virtio/virtio_pcm.h | 132 ++++++++ sound/virtio/virtio_pcm_msg.c | 325 ++++++++++++++++++ sound/virtio/virtio_pcm_ops.c | 528 +++++++++++++++++++++++++++++ 17 files changed, 3570 insertions(+), 1 deletion(-) create mode 100644 include/uapi/linux/virtio_snd.h create mode 100644 sound/virtio/Kconfig create mode 100644 sound/virtio/Makefile create mode 100644 sound/virtio/virtio_card.c create mode 100644 sound/virtio/virtio_card.h create mode 100644 sound/virtio/virtio_chmap.c create mode 100644 sound/virtio/virtio_ctl_msg.c create mode 100644 sound/virtio/virtio_ctl_msg.h create mode 100644 sound/virtio/virtio_jack.c create mode 100644 sound/virtio/virtio_pcm.c create mode 100644 sound/virtio/virtio_pcm.h create mode 100644 sound/virtio/virtio_pcm_msg.c create mode 100644 sound/virtio/virtio_pcm_ops.c