linux-kernel - Add support for Chrome OS firmware signals

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Message-Id: <1448997171-7064-1-git-send-email-martyn.welch@collabora.co.uk>
Date:	Tue,  1 Dec 2015 19:12:48 +0000
From:	Martyn Welch <martyn.welch@...labora.co.uk>
To:	Olof Johansson <olof@...om.net>
Cc:	linux-kernel@...r.kernel.org
Subject: Add support for Chrome OS firmware signals

Some Chromebooks have gpio attached to signals used to cause the firmware
to enter alternative modes of operation and/or control other device
characteristics (such as write protection on flash devices). This patch
adds a driver that exposes a read-only interface to allow these signals to
be read from user space.

In addition this patch series provides the required bindings for this to the
peach-pi Chromebook.

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