tree 49517da40dd6071ed9d3acde9fa1ef97d39ede13
parent a6c61789c8499381a5fe612f11dc95d0b55e590a
author Heiko Stübner <heiko@sntech.de> 1322593449 -0800
committer Dmitry Torokhov <dmitry.torokhov@gmail.com> 1322725276 -0800

Input: add generic GPIO-tilt driver

There exist tilt switches that simply report their tilt-state via
some gpios. The number and orientation of their axes can vary
depending on the switch used and the build of the device. Also two
or more one-axis switches could be combined to provide multi-dimensional
orientation.

One example of a device using such a switch is the family of Qisda
ebook readers, where the switch provides information about the
landscape / portrait orientation of the device. The example in
Documentation/input/gpio-tilt.txt documents exactly this one-axis
device.

Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>