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e70f18e1c7
This patch adds a new driver for keypad for Cirrus Logic CLPS711X CPUs. Target CPU contain keyboard interface which can scan 8 column lines, so we can read row GPIOs to read status and determine asserted state. Signed-off-by: Alexander Shiyan <shc_work@mail.ru> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
28 lines
727 B
Plaintext
28 lines
727 B
Plaintext
* Cirrus Logic CLPS711X matrix keypad device tree bindings
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Required Properties:
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- compatible: Shall contain "cirrus,clps711x-keypad".
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- row-gpios: List of GPIOs used as row lines.
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- poll-interval: Poll interval time in milliseconds.
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- linux,keymap: The definition can be found at
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bindings/input/matrix-keymap.txt.
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Optional Properties:
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- autorepeat: Enable autorepeat feature.
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Example:
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keypad {
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compatible = "cirrus,ep7312-keypad", "cirrus,clps711x-keypad";
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autorepeat;
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poll-interval = <120>;
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row-gpios = <&porta 0 0>,
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<&porta 1 0>;
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linux,keymap = <
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MATRIX_KEY(0, 0, KEY_UP)
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MATRIX_KEY(0, 1, KEY_DOWN)
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MATRIX_KEY(1, 0, KEY_LEFT)
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MATRIX_KEY(1, 1, KEY_RIGHT)
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>;
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};
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