On Tuesday 14 December 2010 19:53:22 ext Mark Brown wrote: > Attempt to minimise audible effects from mixer and mux updates by > implementing the actual register changes between powering down widgets > that have become unused and powering up widgets that are newly used. > > This means that we're making the change with the minimum set of widgets > powered, that the input path is connected when we're powering up widgets > (so things like DC offset correction can run with their signal active) > and that we bring things down to cold before switching away. Since > hardware tends to be designed for the power on/off case more than for > dynamic reconfiguration this should minimise pops and clicks during > reconfiguration while active. > > Signed-off-by: Mark Brown <broonie@xxxxxxxxxxxxxxxxxxxxxxxxxxx> > --- > > Peter, I think this will address your widget reordering issue - I'd > appreciate it if you could test and let me know if it helps. If this > works it avoids the need for the the widget to know anything about the > particular algorithm implemented by DAPM which seems more robust to me. > > Sorry about how long it took to get this done. Well, it is good, and bad. It behaves mostly OK, but there's a strange side effect: I noticed a pop on playback stream start on the twl4030 codec. I'll look into it, but I do not see how this patch can affect the stream start.. Could you hold this patch for some time, so I can look at this? Thanks, Péter _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
