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Input: add generic GPIO-tilt driver

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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>
This commit is contained in:
Heiko Stübner
2011-11-29 11:04:09 -08:00
committed by Dmitry Torokhov
parent a6c61789c8
commit 3bfd5c5baf
5 changed files with 404 additions and 0 deletions
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14
drivers/input/misc/Kconfig
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@@ -179,6 +179,20 @@ config INPUT_APANEL
To compile this driver as a module, choose M here: the module will
be called apanel.
config INPUT_GPIO_TILT_POLLED
tristate "Polled GPIO tilt switch"
depends on GENERIC_GPIO
select INPUT_POLLDEV
help
This driver implements support for tilt switches connected
to GPIO pins that are not capable of generating interrupts.
The list of gpios to use and the mapping of their states
to specific angles is done via platform data.
To compile this driver as a module, choose M here: the
module will be called gpio_tilt_polled.
config INPUT_IXP4XX_BEEPER
tristate "IXP4XX Beeper support"
depends on ARCH_IXP4XX