[alsa-devel] [PATCH 00/13] ASoC: Move IO and kcontrols to the component level

Brian Austin brian.austin at cirrus.com
Tue Mar 18 15:17:27 CET 2014

On Tue, 18 Mar 2014, Takashi Iwai wrote:

> At Tue, 18 Mar 2014 09:02:03 +0100,
> Lars-Peter Clausen wrote:
>> Hi,
>> This series is the first step towards full componentisation of the ASoC core. It
>> moves both the IO abstraction layers within ASoC as well as the standard set of
>> kcontrols to the component level. This for example means we can get rid of
>> constructs like
>> 	if (w->codec)
>> 		snd_soc_read(....)
>> 	else if(w->platform)
>> 		snd_soc_platform_read(...)
>> Moving the kcontrols to the component level means we can use the same
>> implementation also for other non-CODEC components. E.g. there seems to be an
>> increasing amount of CPU components that have basic signal processing and things
>> like volume controls etc. whose register layout is similar to those used in
>> CODECs. Currently each CPU component driver re-implements these controls by
>> hand.
>> The first two patches introduce two new helper functions which hide the actual
>> implementation on how the CODEC or platform struct that register a control can
>> be obtained from the control. This means that when the actual implementation is
>> changed only the two helper functions need to be updated and not every single
>> driver. The patches that follow that are just cleanups removing unused IO stuff
>> and move all IO functions to soc-io.c. The next step is to make platforms also
>> components. And then finally first the IO abstraction layers in ASoC are unified
>> at the component level and then on top of that the kcontrol helpers are moved to
>> the component level.
>> The series depends on quite a few topic branches related to changes to the core
>> and cleanups for individual drivers. It is probably best to place it on top of
>> asoc-v3.15-2. The patch that moves the kcontrols to the component level also has
>> a runtime dependency on the not yet applied patches that move the ams-delta and
>> mfld_machine controls to the card level.
> I'd love to have seen this one or two weeks ago, if this is intended
> for 3.15 upstream.  But I guess it's still OK if anyone can test the
> stuff well.
> thanks,
> Takashi
I don't see a [01/13] patch. It doesn't show up for some reason. I checked 
the archives as well and nothing.


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