From ebcc5a0d08e6a680558ed74f5dd724427ff5a29b Mon Sep 17 00:00:00 2001
From: "Mark A. Greer" <mgreer@animalcreek.com>
Date: Tue, 25 Mar 2014 08:54:36 -0700
Subject: [PATCH] NFC: trf7970a: Set correct Vin voltage in Chip Status Control
 register

Currently, the trf7970a driver assumes that the Vin voltage is 5V when
it writes to the 'Chip Status Control' register. That may not be correct
so use the regulator facility to get the Vin voltage and set the VRS5_3
bit correctly when writing to that register.

Signed-off-by: Mark A. Greer <mgreer@animalcreek.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
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