From: Hector Palacios <hector.palacios@digi.com>
Date: Mon, 23 Dec 2013 17:48:00 +0000 (+0000)
Subject: iio: mxs-lradc: add scale attribute to channels
X-Git-Tag: v3.14-rc1~150^2~139^2~3
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=f6db68a405c795481e15c6c34c865f511b2a098e;p=pandora-kernel.git

iio: mxs-lradc: add scale attribute to channels

Some LRADC channels have fixed pre-dividers and all have an optional
divider by two which allows a maximum input voltage of VDDIO - 50mV.

This patch
 - adds the scaling info flag to all channels
 - grabs the max reference voltage per channel
   (where the fixed pre-dividers apply)
 - allows to read the scaling attribute (computed from the Vref)

Signed-off-by: Hector Palacios <hector.palacios@digi.com>.
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Acked-by: Marek Vasut <marex@denx.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
---

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