linux-kernel - Re: [PATCH] staging:iio:proof of concept in kernel interface.

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Message-ID: <20111017111807.GA27266@opensource.wolfsonmicro.com>
Date:	Mon, 17 Oct 2011 12:18:07 +0100
From:	Mark Brown <broonie@...nsource.wolfsonmicro.com>
To:	Jonathan Cameron <jic23@....ac.uk>
Cc:	Linus Walleij <linus.ml.walleij@...il.com>,
	linux-kernel@...r.kernel.org, linux-iio@...r.kernel.org,
	zdevai@...il.com
Subject: Re: [PATCH] staging:iio:proof of concept in kernel interface.

On Mon, Oct 17, 2011 at 12:13:27PM +0100, Jonathan Cameron wrote:
> On 10/17/11 11:46, Mark Brown wrote:

> > I think the PMIC case is a real one, assigning numbers people need to
> > use to find things is doesn't really reflect actual usage.

> Just to make sure I'm understanding you correctly could you give an example
> part.  The supplies one we explicitly handle anyway so I'm happy with that
> one, I just want to confirm that this is what you are talking about.

The wm831x PMICs have an AUXADC with (actual wirings vary depending on
the particular device):

 - Some voltage inputs hard wired to particular system supplies.
 - One or more temperature inputs wired to particular place (eg, chip
   and battery).
 - Some channels that measure voltages on some of the pins with no
   particular function allocated to them.
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