Commit 04647773 authored by Maxime Ripard's avatar Maxime Ripard Committed by Dmitry Torokhov
Browse files

dt-bindings: input: Convert ChipOne ICN8318 binding to a schema 



The ChipOne ICN8318 Touchscreen Controller is supported by Linux thanks
to its device tree binding.

Now that we have the DT validation in place, let's convert the device
tree bindings for that driver over to a YAML schema.

Signed-off-by: default avatarMaxime Ripard <maxime@cerno.tech>
Reviewed-by: default avatarRob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20210721140424.725744-17-maxime@cerno.tech


Signed-off-by: default avatarDmitry Torokhov <dmitry.torokhov@gmail.com>
parent 5af9f79b

Documentation/devicetree/bindings/input/touchscreen/chipone,icn8318.yaml

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# SPDX-License-Identifier: GPL-2.0

%YAML 1.2

---

$id: http://devicetree.org/schemas/input/touchscreen/chipone,icn8318.yaml#

$schema: http://devicetree.org/meta-schemas/core.yaml#



title: ChipOne ICN8318 Touchscreen Controller Device Tree Bindings



maintainers:

  - Dmitry Torokhov <dmitry.torokhov@gmail.com>



allOf:

  - $ref: touchscreen.yaml#



properties:

  compatible:

    const: chipone,icn8318



  reg:

    maxItems: 1



  interrupts:

    maxItems: 1



  wake-gpios:

    maxItems: 1



unevaluatedProperties: false



required:

  - compatible

  - reg

  - interrupts

  - wake-gpios

  - touchscreen-size-x

  - touchscreen-size-y



examples:

  - |

    #include <dt-bindings/gpio/gpio.h>

    #include <dt-bindings/interrupt-controller/arm-gic.h>



    i2c {

        #address-cells = <1>;

        #size-cells = <0>;



        touchscreen@40 {

            compatible = "chipone,icn8318";

            reg = <0x40>;

            interrupt-parent = <&pio>;

            interrupts = <9 IRQ_TYPE_EDGE_FALLING>; /* EINT9 (PG9) */

            pinctrl-names = "default";

            pinctrl-0 = <&ts_wake_pin_p66>;

            wake-gpios = <&pio 1 3 GPIO_ACTIVE_HIGH>; /* PB3 */

            touchscreen-size-x = <800>;

            touchscreen-size-y = <480>;

            touchscreen-inverted-x;

            touchscreen-swapped-x-y;

        };

    };



...

Documentation/devicetree/bindings/input/touchscreen/chipone_icn8318.txt

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* ChipOne icn8318 I2C touchscreen controller



Required properties:

 - compatible		  : "chipone,icn8318"

 - reg			  : I2C slave address of the chip (0x40)

 - interrupts		  : interrupt specification for the icn8318 interrupt

 - wake-gpios		  : GPIO specification for the WAKE input

 - touchscreen-size-x	  : horizontal resolution of touchscreen (in pixels)

 - touchscreen-size-y	  : vertical resolution of touchscreen (in pixels)



Optional properties:

 - pinctrl-names	  : should be "default"

 - pinctrl-0:		  : a phandle pointing to the pin settings for the

			    control gpios

 - touchscreen-fuzz-x	  : horizontal noise value of the absolute input

			    device (in pixels)

 - touchscreen-fuzz-y	  : vertical noise value of the absolute input

			    device (in pixels)

 - touchscreen-inverted-x : X axis is inverted (boolean)

 - touchscreen-inverted-y : Y axis is inverted (boolean)

 - touchscreen-swapped-x-y	  : X and Y axis are swapped (boolean)

			    Swapping is done after inverting the axis



Example:



i2c@00000000 {

	/* ... */



	chipone_icn8318@40 {

		compatible = "chipone,icn8318";

		reg = <0x40>;

		interrupt-parent = <&pio>;

		interrupts = <9 IRQ_TYPE_EDGE_FALLING>; /* EINT9 (PG9) */

		pinctrl-names = "default";

		pinctrl-0 = <&ts_wake_pin_p66>;

		wake-gpios = <&pio 1 3 GPIO_ACTIVE_HIGH>; /* PB3 */

		touchscreen-size-x = <800>;

		touchscreen-size-y = <480>;

		touchscreen-inverted-x;

		touchscreen-swapped-x-y;

	};



	/* ... */

};