On Sat, Jan 5, 2019 at 2:27 PM Donghoon Han <nazgul33@xxxxxxxxx> wrote:
>
> Add DT binding document for rotary-encoder, keycode options.
>
> Signed-off-by: Donghoon Han <nazgul33@xxxxxxxxx>
> ---
> .../devicetree/bindings/input/rotary-encoder.txt | 12 ++++++++++++
> 1 file changed, 12 insertions(+)
>
> diff --git a/Documentation/devicetree/bindings/input/rotary-encoder.txt b/Documentation/devicetree/bindings/input/rotary-encoder.txt
> index f99fe5cdeaec..113640079de3 100644
> --- a/Documentation/devicetree/bindings/input/rotary-encoder.txt
> +++ b/Documentation/devicetree/bindings/input/rotary-encoder.txt
> @@ -12,6 +12,10 @@ Optional properties:
> - rotary-encoder,relative-axis: register a relative axis rather than an
> absolute one. Relative axis will only generate +1/-1 events on the input
> device, hence no steps need to be passed.
> +- rotary-encoder,relative-keys : generate pair of key events. This setting
> + behaves just like relative-axis, generating key events. keycode[2]
> + corresponds -1/1 events.
> +- rotary-encoder,relative-keycodes : keycodes for relative-keys
> - rotary-encoder,rollover: Automatic rollover when the rotary value becomes
> greater than the specified steps or smaller than 0. For absolute axis only.
> - rotary-encoder,steps-per-period: Number of steps (stable states) per period.
> @@ -48,3 +52,11 @@ Example:
> rotary-encoder,encoding = "binary";
> rotary-encoder,rollover;
> };
> +
> + rotary@2 {
> + compatible = "rotary-encoder";
> + gpios = <&gpio 21 0>, <&gpio 22 0>;
> + rotary-encoder,relative-keys;
> + rotary-encoder,relative-keycode = <103>, <108>;
> + rotary-encoder,steps-per-period = <2>;
Do you need steps for keys? They weren't required for the relative axis mode.
Thanks.
--
Dmitry
