linux-dev/sound/virtio, branch master

virtio: wrap config->reset calls

2022-01-14T23:50:52Z

This will enable cleanups down the road. The idea is to disable cbs, then add "flush_queued_cbs" callback as a parameter, this way drivers can flush any work queued after callbacks have been disabled. Signed-off-by: Michael S. Tsirkin Link: https://lore.kernel.org/r/20211013105226.20225-1-mst@redhat.com Signed-off-by: Michael S. Tsirkin

ALSA: virtio: Replace zero-length array with flexible-array member

2021-09-30T11:47:57Z

There is a regular need in the kernel to provide a way to declare having a dynamically sized set of trailing elements in a structure. Kernel code should always use “flexible array members”[1] for these cases. The older style of one-element or zero-length arrays should no longer be used[2]. Also, make use of the struct_size() helper in kzalloc(). [1] https://en.wikipedia.org/wiki/Flexible_array_member [2] https://www.kernel.org/doc/html/v5.10/process/deprecated.html#zero-length-and-one-element-arrays Link: https://github.com/KSPP/linux/issues/78 Signed-off-by: Gustavo A. R. Silva Link: https://lore.kernel.org/r/20210929191504.GA337268@embeddedor Signed-off-by: Takashi Iwai

ALSA: virtio: fix kernel-doc

2021-04-27T06:39:39Z

make W=1 warning: sound/virtio/virtio_ctl_msg.c:70: warning: expecting prototype for virtsnd_ctl_msg_request(). Prototype was for virtsnd_ctl_msg_response() instead Signed-off-by: Pierre-Louis Bossart Link: https://lore.kernel.org/r/20210426213902.234711-1-pierre-louis.bossart@linux.intel.com Signed-off-by: Takashi Iwai

ALSA: virtio: use module_virtio_driver() to simplify the code

2021-04-12T10:15:34Z

module_virtio_driver() makes the code simpler by eliminating boilerplate code. Signed-off-by: Chen Huang Reviewed-by: Anton Yakovlev Link: https://lore.kernel.org/r/20210408125429.1158703-1-chenhuang5@huawei.com Signed-off-by: Takashi Iwai

ALSA: virtio: introduce device suspend/resume support

2021-03-07T08:08:39Z

All running PCM substreams are stopped on device suspend and restarted on device resume. Signed-off-by: Anton Yakovlev Link: https://lore.kernel.org/r/20210302164709.3142702-10-anton.yakovlev@opensynergy.com Signed-off-by: Takashi Iwai

ALSA: virtio: introduce PCM channel map support

2021-03-07T08:08:20Z

Enumerate all available PCM channel maps and create ALSA controls. Signed-off-by: Anton Yakovlev Link: https://lore.kernel.org/r/20210302164709.3142702-9-anton.yakovlev@opensynergy.com Signed-off-by: Takashi Iwai

ALSA: virtio: introduce jack support

2021-03-07T08:08:11Z

Enumerate all available jacks and create ALSA controls. At the moment jacks have a simple implementation and can only be used to receive notifications about a plugged in/out device. Signed-off-by: Anton Yakovlev Link: https://lore.kernel.org/r/20210302164709.3142702-8-anton.yakovlev@opensynergy.com Signed-off-by: Takashi Iwai

ALSA: virtio: PCM substream operators

2021-03-07T08:08:03Z

Introduce the operators required for the operation of substreams. Signed-off-by: Anton Yakovlev Link: https://lore.kernel.org/r/20210302164709.3142702-7-anton.yakovlev@opensynergy.com Signed-off-by: Takashi Iwai

ALSA: virtio: handling control and I/O messages for the PCM device

2021-03-07T08:07:44Z

The driver implements a message-based transport for I/O substream operations. Before the start of the substream, the hardware buffer is sliced into I/O messages, the number of which is equal to the current number of periods. The size of each message is equal to the current size of one period. I/O messages are organized in an ordered queue. The completion of the I/O message indicates an elapsed period (the only exception is the end of the stream for the capture substream). Upon completion, the message is automatically re-added to the end of the queue. Signed-off-by: Anton Yakovlev Link: https://lore.kernel.org/r/20210302164709.3142702-6-anton.yakovlev@opensynergy.com Signed-off-by: Takashi Iwai

ALSA: virtio: build PCM devices and substream hardware descriptors

2021-03-07T08:07:35Z

Like the HDA specification, the virtio sound device specification links PCM substreams, jacks and PCM channel maps into functional groups. For each discovered group, a PCM device is created, the number of which coincides with the group number. Introduce the module parameters for setting the hardware buffer parameters: pcm_buffer_ms [=160] pcm_periods_min [=2] pcm_periods_max [=16] pcm_period_ms_min [=10] pcm_period_ms_max [=80] Signed-off-by: Anton Yakovlev Link: https://lore.kernel.org/r/20210302164709.3142702-5-anton.yakovlev@opensynergy.com Signed-off-by: Takashi Iwai