From: Pawel Moll <pawel.moll@arm.com>
Date: Tue, 18 Sep 2012 11:24:57 +0000 (+0100)
Subject: mfd: Versatile Express system registers driver
X-Git-Tag: omap-for-v3.8/fixes-for-merge-window-v4-signed~14^2~7^2~3
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=88e0abcd7a8171ca7af3402373e7bd81fe9b6754;p=pandora-kernel.git

mfd: Versatile Express system registers driver

This is a platform driver for Versatile Express' "system
register" block. It's a random collection of registers providing
the following functionality:

- low level platform functions like board ID access; in order to
  use those, the driver must be initialized early, either statically
  or based on the DT

- config bus bridge via "system control" interface; as the response
  from the controller does not generate interrupt (yet), the status
  register is periodically polled using a timer

- pseudo GPIO lines providing MMC card status and Flash WP#
  signal control

- LED interface for a set of 8 LEDs on the motherboard, with
  "heartbeat", "mmc0" and "cpu0" to "cpu5" as default triggers

Signed-off-by: Pawel Moll <pawel.moll@arm.com>
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