ASoC: fsl_micfil: Add Hardware Voice Activity Detector support

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The Hardware Voice Activity Detector (HWVAD) is a block
responsible for detect voice activity in a channel selected
by the user. It can be configured in Envelope-based or
Energy-based mode.

There are additional two interrupts for HWVAD, one is event
interrupt, another is error interrupt.

Enable hwvad in parallel with recording.
when voice activity detected, HWVAD will be disabled and
alsa control notification is triggerred.

Signed-off-by: Shengjiu Wang <shengjiu.wang@nxp.com>
Link: https://lore.kernel.org/r/1663925494-9941-1-git-send-email-shengjiu.wang@nxp.com
Signed-off-by: Mark Brown <broonie@kernel.org>

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Shengjiu Wang 2022-09-23 17:31:34 +08:00 • committed by Mark Brown

parent 2a9ad0cc15

commit 29dbfeecab

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434

sound/soc/fsl/fsl_micfil.c

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6

sound/soc/fsl/fsl_micfil.h

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