[alsa-devel] [PATCH] ASoC: TWL4030: Modify codec default settings

Peter Ujfalusi peter.ujfalusi at nokia.com
Fri Jan 29 08:01:30 CET 2010

On Thursday 28 January 2010 16:34:24 ext Mark Brown wrote:
> On Thu, Jan 28, 2010 at 03:57:04PM +0200, Peter Ujfalusi wrote:
> > Change the legacy default register configuration, which left some
> > internal components on.
> > Now we have either DAPM, or other ways to control these bits,
> > so there is no need to enable them by default.
> Applied, thanks.  Though if they're regular DAPM controls then they
> should get turned off again during startup if they're not used.

What I have found out is that after boot these bits were set (obviously), after 
the audio activity, they were cleared (not all, since if the given DAPM control 
was not in the path, it was left enabled either way).
Now these bits are 0 after boot, and only enabled, when a certain path needs it.
In short: the overall power consumption was higher after boot, than what was 
after for example the playback was stopped...


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