From ff2ed0491d9f6e8b1a0fa205324030588f9e4037 Mon Sep 17 00:00:00 2001
From: Vincent Donnefort <vdonnefort@gmail.com>
Date: Fri, 7 Feb 2014 14:21:06 +0100
Subject: [PATCH] gpio: ich: Add output levels cache support

This patch allows GPIO driver to cache GPIO_LVL output registers. The aim is to
support chipsets on which GPIO_LVL value can't be read for output pins.

Caching output levels implies the first output values reading as 0. The driver
so can't be aware of set values GPIOs by bootloader or BIOS.

Signed-off-by: Vincent Donnefort <vdonnefort@gmail.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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