soundwire: user space test utilities
Hi all,
I am looking for any existing user space test utilities to test SOUNDWIRE SUBSYSTEM in Linux kernel. Can someone please point me to this.
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.
On Tue, May 31, 2022 at 8:44 PM Pierre-Louis Bossart pierre-louis.bossart@linux.intel.com wrote:
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
Thanks a lot for the clarification.
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.
On Tue, May 31, 2022 at 8:44 PM Pierre-Louis Bossart pierre-louis.bossart@linux.intel.com wrote:
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
alsa-lib/alsa-utils applications can be used for transmitting audio data. How to transmit non-audio data over the Soundwire interface?
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.
On 3/6/23 01:39, Muni Sekhar wrote:
On Tue, May 31, 2022 at 8:44 PM Pierre-Louis Bossart pierre-louis.bossart@linux.intel.com wrote:
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
alsa-lib/alsa-utils applications can be used for transmitting audio data. How to transmit non-audio data over the Soundwire interface?
There's no good answer to such a vague question. "non-audio data" can be transmitted over the control channel or the "BRA" mode, if supported. That's how drivers provide firmware or configuration blobs, but that's internal to the kernel. There's no dedicated/standard interface to send "non-audio data" from userpace to a specific device. It's not SoundWire specific btw, you'd have the same answer for HDaudio.
participants (2)
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Muni Sekhar -
Pierre-Louis Bossart