linux-kernel - Re: multi-codec support for arizona-ldo1 was Re: System with multiple arizona (wm5102) codecs

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Message-ID: <20151012201137.GA7317@amd>
Date:	Mon, 12 Oct 2015 22:11:38 +0200
From:	Pavel Machek <pavel@....cz>
To:	Mark Brown <broonie@...nel.org>
Cc:	Charles Keepax <ckeepax@...nsource.wolfsonmicro.com>,
	lgirdwood@...il.com, perex@...ex.cz, tiwai@...e.de,
	patches@...nsource.wolfsonmicro.com, alsa-devel@...a-project.org,
	linux-kernel@...r.kernel.org
Subject: Re: multi-codec support for arizona-ldo1 was Re: System with
 multiple arizona (wm5102) codecs

Hi!

On Mon 2015-10-12 16:47:15, Mark Brown wrote:
> On Mon, Oct 12, 2015 at 11:00:45AM +0200, Pavel Machek wrote:
> 
> > Does this look like a step in right direction?
> 
> >  static const struct regulator_desc arizona_ldo1_hc = {
> > -	.name = "LDO1",
> 
> No, you definitely shouldn't be doing this - the regulator names should
> reflect the names the device has in the datasheet to aid people in going
> from software to the hardware and back again.  They shouldn't be
> dynamically generated at runtime.  If you need to namespace by
device

They already are, see wm831x-ldo.c .

> provide an interface which explicitly namespaces by device rather than
> hacking it into another interface, the usual thing is to use the struct
> device as the context.

I'll need some more help here. I need to use it from ALSA, so I don't
think I can influence that interface easily.

What is currently in tree _does not work_, as there are two arizona
chips, and two "LDO1" regulators. (Doable) suggestions how to fix that
are welcome.
									Pavel
-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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