Handle WoV phrase detection notification and kcontrols - #5903
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Handle WoV phrase detection notification and kcontrols#5903naveen-manohar wants to merge 2 commits into
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naveen-manohar
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August 29, 2026 05:27
Add SOF_IPC4_NOTIFY_PHRASE_DETECTED notification handler, sent by DSP FW when a keyword is detected by WoV pipeline. Handler parses PCM list to find WoV capture PCM pcm_id 11, calls snd_pcm_period_elapsed() to unblock waiting capture stream. Change-Id: I16423e24fa2e274cefbc6def6063176fe60c10a8 Signed-off-by: Naveen Manohar <naveen.m@intel.com>
When DSP reports keyword detection, notify topology-defined WoV kcontrols so that user space can poll for value changes. Checked for 2 kcontrols in loaded topology: - 'wov_trigger_id': RO enum reporting winner slot(0/1/2) - 'wov_event': control that user space polls via POLLPRI Signed-off-by: Naveen Manohar <naveen.m@intel.com>
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@jsarha pls review - it may be that your IPC4 wov wakeup PR overlaps here. |
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I think it would be best to use snd_sof_pcm_period_elapsed(), but other than that I do not see anything alarming here. Of course the final judge is, does it work?
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I think you should probably use snd_sof_pcm_period_elapsed() here. See https://github.com/naveen-manohar/linux/blob/412f4a9a9dbe2eda5b9467114c0043c6a0615ee3/sound/soc/sof/pcm.c#L43
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Add SOF_IPC4_NOTIFY_PHRASE_DETECTED notification handler for WoV.
When DSP FW reports keyword detection, unblock the WoV capture stream
via snd_pcm_period_elapsed()
Notify topology-defined kcontrols ('wov_trigger_id', 'wov_event') for userspace polling.