Hi Pierre,
On 5/7/2024 2:20 PM, Pierre-Louis Bossart wrote:
If a PCM device is already in use, the check will return an error to
userspace notifying that the stream is currently busy. This ensures that
only one path is using the USB substream.
What was the point of having a "USB Mixer" then?
The USB mixer is intended to enable/route the USB offloading path to the
audio DSP, and is for controlling the ASoC specific entities. This
change is needed to resolve any contention between the USB SND PCM
device (non offload path) and the ASoC USB BE DAI (offload path).
Thanks
Wesley Cheng
