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dt-bindings: input: cros-ec-keyb: Add a new property describing top row

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Add a new property `function-row-physmap` to the
device tree for the custom keyboard top row design.

The property describes the rows/columns of the top row keys
from left to right.

Signed-off-by: Philip Chen <philipchen@chromium.org>
Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Reviewed-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20210115122412.v7.1.I025fb861cd5fa0ef5286b7dce514728e9df7ae74@changeid
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
This commit is contained in:
Philip Chen 2021-02-22 21:03:23 -08:00 committed by Dmitry Torokhov
parent 415e915fdf
commit 311a27da62
1 changed files with 24 additions and 0 deletions
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24
Documentation/devicetree/bindings/input/google,cros-ec-keyb.yaml
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@ -31,6 +31,17 @@ properties:
if the EC does not have its own logic or hardware for this.
type: boolean
function-row-physmap:
minItems: 1
maxItems: 15
description: |
An ordered u32 array describing the rows/columns (in the scan matrix)
of top row keys from physical left (KEY_F1) to right. Each entry
encodes the row/column as:
(((row) & 0xFF) << 24) | (((column) & 0xFF) << 16)
where the lower 16 bits are reserved. This property is specified only
when the keyboard has a custom design for the top row keys.
required:
- compatible
@ -38,11 +49,24 @@ unevaluatedProperties: false
examples:
- |
#include <dt-bindings/input/input.h>
cros-ec-keyb {
compatible = "google,cros-ec-keyb";
keypad,num-rows = <8>;
keypad,num-columns = <13>;
google,needs-ghost-filter;
function-row-physmap = <
MATRIX_KEY(0x00, 0x02, 0) /* T1 */
MATRIX_KEY(0x03, 0x02, 0) /* T2 */
MATRIX_KEY(0x02, 0x02, 0) /* T3 */
MATRIX_KEY(0x01, 0x02, 0) /* T4 */
MATRIX_KEY(0x03, 0x04, 0) /* T5 */
MATRIX_KEY(0x02, 0x04, 0) /* T6 */
MATRIX_KEY(0x01, 0x04, 0) /* T7 */
MATRIX_KEY(0x02, 0x09, 0) /* T8 */
MATRIX_KEY(0x01, 0x09, 0) /* T9 */
MATRIX_KEY(0x00, 0x04, 0) /* T10 */
>;
/*
* Keymap entries take the form of 0xRRCCKKKK where
* RR=Row CC=Column KKKK=Key Code