> I am looking for any existing user space test utilities to test > SOUNDWIRE SUBSYSTEM in Linux kernel. Can someone please point me to > this. There are no specific userspace utilities to test the bus itself, you can use existing alsa-lib/alsa-utils applications to play/capture audio and check for events, i.e. aplay, arecord, speaker-test, amixer, alsamixer, evtest The Intel manager driver provides a set of debugfs features to e.g. inject a parity error, bad command or test for signal integrity with the PRBS data generation, but that's low-level for hardware integration purposes.
