linux-kernel - Re: [alsa-devel] [RFC PATCH v2 0/5] snd-ice1712: Add Philips PSC724 Ultimate Edge

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Date:	Wed, 19 Sep 2012 19:58:15 +0200
From:	Takashi Iwai <tiwai@...e.de>
To:	Ondrej Zary <linux@...nbow-software.org>
Cc:	alsa-devel@...a-project.org, broonie@...nsource.wolfsonmicro.com,
	linux-kernel@...r.kernel.org
Subject: Re: [alsa-devel] [RFC PATCH v2 0/5] snd-ice1712: Add Philips PSC724	Ultimate Edge

At Wed, 19 Sep 2012 19:03:14 +0200,
Ondrej Zary wrote:
> 
> On Wednesday 19 September 2012 17:28:21 Takashi Iwai wrote:
> > At Tue, 18 Sep 2012 20:58:31 +0200,
> >
> > Ondrej Zary wrote:
> > > Hello,
> > > this is second attempt to add Philips PSC724 Ultimate Edge sound card
> > > support to snd-ice1712 driver. Unlike other snd-ice1712 subdrivers, the
> > > codec code is splitted into separate modules and thus reusable by other
> > > ice1712 subdrivers.
> >
> > Well, the problem is that most of ice17xx boards use only a part of
> > channels on codecs.   Thus you don't want to expose controls for all
> > channels, too.  Otherwise user will get confusing dead controls.
> 
> The controls can be easily hidden by setting its name to NULL. It's even used 
> in the psc724 subdriver.
> 
> > If these new modules are supposed to be used by other ice1712/ice1724
> > sub drivers, they should provide some good binding mechanism, too.
> > (And that's one of the good reasons why ASoC has been nominated.)
> 
> They're easy to use, you just need to provide wm87x6_write() function. I think 
> that other subdrivers could be easily converted to use this (with hardware to 
> test).

OK, but I'd like to have modules only when the code sharing happens.
Also, it'd be better to have different module names, indicating that
they are ice17xx-specific.

thanks,

Takashi

> 
> > thanks,
> >
> > Takashi
> >
> > > Working: all analog outputs (front, rear, center+lfe, headphone) and
> > > inputs (front mic, rear mic, line, cd, aux), mixer, headphone jack
> > > detection, suspend/resume
> > >
> > > Currently untested: SPDIF
> > >
> > > Buggy: switching AGC mode in mixer causes alsamixer to crash - looks like
> > > it does not like notifications about control activating/deactivating
> > > _______________________________________________
> > > Alsa-devel mailing list
> > > Alsa-devel@...a-project.org
> > > http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
> 
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