[alsa-devel] [PATCH v4 0/5] ALSA: jack: Refactoring for jack kctls

[Takashi Iwai]

At Wed, 8 Apr 2015 09:18:10 +0000,
Jie, Yang wrote:
> 
> > >>      }
> > >>
> > >> Now the HDA looks more like the ASoC variant. Yang, what do you think
> > >> about that? That would make the API simpler, wouldn't it?
> > >
> > > Here repeat what I stated in another reply:
> > >
> > > For jack creating, we use the same API -- snd_jack_new();
> > >
> > > For kctl creating, yes, we use different APIs:
> > > snd_jack_kctl_new() for input jacks(HDA),
> > > snd_jack_add_kctls() for kctl jacks(ASoC).
> > >
> > > There are 2 reasons that I made them different:
> > > 1. a. for HDA phantom jack, in the old/exist logic,
> > > __snd_hda_jack_add_kctl() will also call snd_kctl_jack_new() and
> > > snd_hda_ctl_add(), it will create kctls and add them to card(also
> > > assigning some arrays, they are different with calling
> > > snd_ctl_add() only, which is what we will do for ASoC kctl adding);
> > 
> > Actually, now that I look at snd_hda_ctl_add, I don't know why we need to
> > call it for HDA jacks. There does not seem to be anything relevant for HDA
> > jacks there. I think we can just call snd_ctl_add for HDA jacks too.
> 
> OK, then it may make life easier.  Hi Takashi, you agree with this?
> Do we need add those kctls to the HDA codec, or to hda_nid_item?

It's been added in the local list to manage the kctls belonging to a
codec more easily.  But if snd_hda_codec_free() and _reset() can
remove them gracefully, there is no big reason to keep tracking
there.


Takashi