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

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Message-Id: <201209192348.30440.linux@rainbow-software.org>
Date:	Wed, 19 Sep 2012 23:48:29 +0200
From:	Ondrej Zary <linux@...nbow-software.org>
To:	Takashi Iwai <tiwai@...e.de>
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

On Wednesday 19 September 2012 19:58:15 Takashi Iwai wrote:
> 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.

OK, I'll change the code to not produce modules.

> > > > 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

What about this? Is it a bug in my code or somewhere else?

-- 
Ondrej Zary
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