andy git 06/15 suspend/resume observations

Mark Brown broonie at
Tue Jun 17 11:37:57 CEST 2008

On Mon, Jun 16, 2008 at 11:36:56PM +0100, Andy Green wrote:

> BTW Mark... we use the sideband path for voice data... no *ALSA* device
> is opened during that time, but we could do with 50K source impedence to
> Vref not 500K which happens shortly after you close an alsa device.  How
> do you think we should come at that?  Keep 50K up while there is any
> active analogue routing path open?  Or a new ALSA switch, or something else?

ASoC should be holding the codec in full bias whenever there is a
complete audio path up so that this is transparent to user space.  It's
something we're aware of - it should just be a case of moving the bias
power managment from the PCM stream code into the DAPM path management.

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