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authorOlof Johansson <olof@lixom.net>2012-03-13 21:35:51 -0700
committerDmitry Torokhov <dmitry.torokhov@gmail.com>2012-03-13 21:37:04 -0700
commit2cd36877ad1c61429e00c099b6903ebcd936ca00 (patch)
treec9f7618f3b49c2ba5516c9023ba7e5604aa6b08c /Documentation/devicetree/bindings/input
parentb51425becfe127e0c17a8501ffa079b37241ed11 (diff)
Input: of_keymap - add device tree bindings for simple key matrices
This adds a simple device tree binding for simple key matrix data and a helper to fill in the platform data. Signed-off-by: Olof Johansson <olof@lixom.net> Acked-by: Stephen Warren <swarren@nvidia.com> Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
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+A simple common binding for matrix-connected key boards. Currently targeted at
+defining the keys in the scope of linux key codes since that is a stable and
+standardized interface at this time.
+
+Required properties:
+- linux,keymap: an array of packed 1-cell entries containing the equivalent
+ of row, column and linux key-code. The 32-bit big endian cell is packed
+ as:
+ row << 24 | column << 16 | key-code
+
+Optional properties:
+Some users of this binding might choose to specify secondary keymaps for
+cases where there is a modifier key such as a Fn key. Proposed names
+for said properties are "linux,fn-keymap" or with another descriptive
+word for the modifier other from "Fn".
+
+Example:
+ linux,keymap = < 0x00030012
+ 0x0102003a >;

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