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Diffstat (limited to 'Documentation/devicetree/bindings/input/matrix-keymap.txt')
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diff --git a/Documentation/devicetree/bindings/input/matrix-keymap.txt b/Documentation/devicetree/bindings/input/matrix-keymap.txt new file mode 100644 index 000000000000..3cd8b98ccd2d --- /dev/null +++ b/Documentation/devicetree/bindings/input/matrix-keymap.txt | |||
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1 | A simple common binding for matrix-connected key boards. Currently targeted at | ||
2 | defining the keys in the scope of linux key codes since that is a stable and | ||
3 | standardized interface at this time. | ||
4 | |||
5 | Required properties: | ||
6 | - linux,keymap: an array of packed 1-cell entries containing the equivalent | ||
7 | of row, column and linux key-code. The 32-bit big endian cell is packed | ||
8 | as: | ||
9 | row << 24 | column << 16 | key-code | ||
10 | |||
11 | Optional properties: | ||
12 | Some users of this binding might choose to specify secondary keymaps for | ||
13 | cases where there is a modifier key such as a Fn key. Proposed names | ||
14 | for said properties are "linux,fn-keymap" or with another descriptive | ||
15 | word for the modifier other from "Fn". | ||
16 | |||
17 | Example: | ||
18 | linux,keymap = < 0x00030012 | ||
19 | 0x0102003a >; | ||