audio: add ALSA card registration preflight test#458
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Add common audio helper functions for validating ALSA sound card registration from tests. The new helpers provide support to: - dump ALSA/kernel sound inventory for CI debug - detect registered non-dummy ALSA cards - wait for card registration - validate /dev/snd/controlC<N> nodes - optionally validate PCM/playback/capture entries - infer whether audio registration is expected from DT/sysfs - collect audio-focused dmesg triage These helpers are intended for lightweight audio preflight tests and do not start or restart PipeWire, PulseAudio, ADSP, or remoteproc. Signed-off-by: Srikanth Muppandam <smuppand@qti.qualcomm.com>
Add a new Audio_Card_Registration test to validate that the kernel/ALSA audio card is registered after boot. The test validates: - ALSA card presence under /proc/asound/cards - non-dummy sound card registration - /dev/snd/controlC<N> node creation - optional PCM/playback/capture entries - audio-related dmesg diagnostics This provides a fast audio preflight check before running playback or record tests. It helps distinguish kernel/ASoC card registration issues from userspace audio backend, routing, clip, or mixer failures. Signed-off-by: Srikanth Muppandam <smuppand@qti.qualcomm.com>
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AudioPlayback and AudioRecord validate end-to-end userspace audio flows, but they can fail due to backend, routing, mixer, clip, or runtime environment issues.
This PR adds a lightweight preflight test to validate the lower-level kernel/ALSA audio card registration path first. This helps quickly identify whether the audio card itself registered correctly before running playback or record tests.
The test is useful for Qualcomm boards where failures may come from:
/dev/sndnodesWhat this PR changes
Adds common helper functions in
Runner/utils/[audio_common.sh](http://audio_common.sh/)to:/dev/snd/controlC<N>Adds new test:
Runner/suites/Multimedia/Audio/Audio_Card_Registration/[run.sh](http://run.sh/)Runner/suites/Multimedia/Audio/Audio_Card_Registration/Audio_Card_Registration.yamlTest behavior
The test validates that at least one valid, non-dummy ALSA card is registered and that the matching card has a control node.
By default, the test keeps PCM validation optional to avoid false failures on boards where playback/capture topology can vary by image or platform.
Default checks:
/dev/snd/controlC<N>validationOptional checks:
Result file
The test writes a single fixed result file:
Lava job for reference with the current changes. https://lava.infra.foundries.io/scheduler/job/212244#L2496