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dt-bindings: input: bindings for Adafruit Seesaw Gamepad
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Adds bindings for the Adafruit Seesaw Gamepad.

The gamepad functions as an i2c device with the default address of 0x50
and has an IRQ pin that can be enabled in the driver to allow for a rising
edge trigger on each button press or joystick movement.

Product page:
  https://www.adafruit.com/product/5743
Arduino driver:
  https://github.com/adafruit/Adafruit_Seesaw

Reviewed-by: Conor Dooley <conor.dooley@microchip.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Anshul Dalal <anshulusr@gmail.com>
Link: https://lore.kernel.org/r/20240106015111.882325-1-anshulusr@gmail.com
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
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Anshul Dalal authored and Dmitry Torokhov committed Jan 10, 2024
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# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/input/adafruit,seesaw-gamepad.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#

title: Adafruit Mini I2C Gamepad with seesaw

maintainers:
- Anshul Dalal <anshulusr@gmail.com>

description: |
Adafruit Mini I2C Gamepad
+-----------------------------+
| ___ |
| / \ (X) |
| | S | __ __ (Y) (A) |
| \___/ |ST| |SE| (B) |
| |
+-----------------------------+
S -> 10-bit precision bidirectional analog joystick
ST -> Start
SE -> Select
X, A, B, Y -> Digital action buttons
Datasheet: https://cdn-learn.adafruit.com/downloads/pdf/gamepad-qt.pdf
Product page: https://www.adafruit.com/product/5743
Arduino Driver: https://github.com/adafruit/Adafruit_Seesaw
properties:
compatible:
const: adafruit,seesaw-gamepad

reg:
maxItems: 1

interrupts:
maxItems: 1
description:
The gamepad's IRQ pin triggers a rising edge if interrupts are enabled.

required:
- compatible
- reg

additionalProperties: false

examples:
- |
#include <dt-bindings/interrupt-controller/irq.h>
i2c {
#address-cells = <1>;
#size-cells = <0>;
joystick@50 {
compatible = "adafruit,seesaw-gamepad";
interrupts = <18 IRQ_TYPE_EDGE_RISING>;
reg = <0x50>;
};
};

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