[alsa-devel] [PATCH 0/8] ASoC: TWL4030: DAPM implementation for outputs (playback)

Peter Ujfalusi peter.ujfalusi at nokia.com
Tue Dec 9 11:07:53 CET 2008

On Tuesday 09 December 2008 11:47:01 ext Mark Brown wrote:
> On Tue, Dec 09, 2008 at 08:51:58AM +0200, Peter Ujfalusi wrote:
> > As I see: when the twl4030_power_down is called from the
> > twl4030_set_bias_level (SND_SOC_BIAS_STANDBY, SND_SOC_BIAS_OFF) it sets
> > the codec to power-off state (CODEC_MODE:CODECPDZ = 0), which effectively
> > turns off the digital filter, analog section, so basically everything.
> > When the CODECPDZ is 0, APGA, DAC, analog output settings have no effect
> > (they are powered off)
> Right, that's what I thought.  You'll need to fix this in order to use
> bypass paths since it will turn off the analogue.

Yes, that is true.

My plan is (yes I do have one):
1. Proper (at least as close to) implementation for the playback path(s)
2. Proper capture implementation (DAPM, etc)
3. Adding the bypass routes
4. The driver is kind of feature complete


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