[alsa-devel] [PATCH v2 5/5] ASoC: Intel: add BYTCR machine driver with RT5640

[Vinod Koul]

On Wed, Nov 05, 2014 at 09:54:59AM +0200, Jarkko Nikula wrote:
> On 11/04/2014 11:32 AM, Vinod Koul wrote:
> >On Tue, Nov 04, 2014 at 11:19:10AM +0200, Jarkko Nikula wrote:
> >>
> >>I think it's worth to have same kcontrol and card names than
> >>byt-rt5640 in case this is going to replace byt-rt5640.c since then
> >>users can continue to use the same asound.state file. E.g. speakers
> >>won't mute because of "Speaker" changes to "Ext Spk".
> >It would have helped if the DSP controls were not there. The DSP controls
> >need to be routed too, so existing conf files would need to be updated.
> >
> >So, do you still recommend changing :)
> >
> Do new controls affect PCM pass through? I was thinking if they
> affect only compressed streams then it'd be useful if existing state
> files continue working for PCM pass through. It's always painful if
> kcontol name changes render audio muted and user have to go through
> gazillions of kcontrols :-(
Yes they do and yes we have large number of controls :(
Plus there are some algorithms like EQ etc which can be programmed using
kcontrols

-- 
~Vinod