ANDROID: input: keychord: Add keychord driver
This driver allows userspace to receive notification when client specified key combinations are pressed. The client opens /dev/keychord and writes a list of keychords for the driver to monitor. The client then reads or polls /dev/keychord for notifications. A client specified ID for the keychord is returned from read() when a keychord press is detected. Signed-off-by:Mike Lockwood <lockwood@android.com> keychord: fix to build without CONFIG_PREEMPT Change-Id: I911f13aeda4224b6fa57863bc7e8972fec8837fb [AmitP: Folded following android-4.9 commit changes into this patch f4d1cf1208fe ("ANDROID: input: misc: keychord: move header to uapi")] Signed-off-by:
Amit Pundir <amit.pundir@linaro.org>
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