Re: [PATCH v3 1/2] dt-bindings: input: bindings for Adafruit Seesaw Gamepad

[Conor Dooley <conor@kernel.org>]

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On Mon, Oct 09, 2023 at 12:27:06AM +0530, Anshul Dalal wrote:
> A simple driver for a mini gamepad that communicates over i2c, the gamepad
> has bidirectional thumb stick input and six buttons.
> 
> The gamepad chip utilizes the open framework from Adafruit called 'Seesaw'
> to transmit the ADC data for the joystick and digital pin state for the
> buttons. I have only implemented the functionality required to receive the
> thumb stick and button state.
> 
> Product page:
>   https://www.adafruit.com/product/5743
> Arduino driver:
>   https://github.com/adafruit/Adafruit_Seesaw
> 
> For testing on a RPi Zero 2W, I utilized the following devicetree overlay:
> 
> /dts-v1/;
> /plugin/;
> / {
> 	compatible = "brcm,bcm2835";
> 	fragment@0 {
> 		target = <&i2c1>;
> 		__overlay__ {
> 			#address-cells = <1>;
> 			#size-cells = <0>;
> 			joystick@50 {
> 				compatible = "adafruit,seesaw-gamepad";
> 				reg = <0x50>;
> 			};
> 		};
> 	};
> };
> 
> I used the above overlay as reference for writing this binding. Though the
> gamepad also has an interrupt pin that needs to be enabled explicitly (not
> currently implemented in driver). The pin triggers a rising edge when a
> button is pressed or joystick is moved which can be detected on a GPIO
> of the Microcontroller.
> 
> I wasn't sure how to represent that functionality in the binding so I have
> left it out for now.
> 
> Signed-off-by: Anshul Dalal <anshulusr@gmail.com>
> ---
> 
> Changes for v3:
> - Updated id field to reflect updated file name from previous version
> - Added `reg` property
> 
> Changes for v2:
> - Renamed file to `adafruit,seesaw-gamepad.yaml`
> - Removed quotes for `$id` and `$schema`
> - Removed "Bindings for" from the description
> - Changed node name to the generic name "joystick"
> - Changed compatible to 'adafruit,seesaw-gamepad' instead of 'adafruit,seesaw_gamepad'
> 
>  .../input/adafruit,seesaw-gamepad.yaml        | 54 +++++++++++++++++++
>  1 file changed, 54 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/input/adafruit,seesaw-gamepad.yaml
> 
> diff --git a/Documentation/devicetree/bindings/input/adafruit,seesaw-gamepad.yaml b/Documentation/devicetree/bindings/input/adafruit,seesaw-gamepad.yaml
> new file mode 100644
> index 000000000000..610c99594439
> --- /dev/null

> +++ b/Documentation/devicetree/bindings/input/adafruit,seesaw-gamepad.yaml

> +$id: http://devicetree.org/schemas/input/adafruit-seesaw.yaml#

You're at version 3 now, but do not seem to have figured out how to test
the bindings?
https://docs.kernel.org/devicetree/bindings/writing-schema.html#running-checks

Thanks,
Conor.

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