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How to turn on MICBIAS permanently in ADAU1761?

Question asked by rohit.mohan on Jun 16, 2015
Latest reply on Jul 2, 2015 by rohit.mohan


Currently Micbias gets enabled only when the recording starts. We have a requirement where micbias need to be enabled all the time.

Is there a way to do this using DAPM?

I would like to know if below listed requirements are possible and how and in which driver(codec/machine) to implement it.

1) Enabling and disabling mic bias using a new amixer control.

2) Add micbias enable/disable functionality to the mic bias mode selection amixer control(Normal operation/High performance). I mean something similar 'Capture' control where we have a single amixer control for turning on capture and also to change capture volume.


Thanks and regards