Commit ddbb299d authored by Dudley Du's avatar Dudley Du Committed by Dmitry Torokhov
Browse files

Input: cyapa - introduce device tree binding 



Add device tree support for  Cypress trackpad devices.

Signed-off-by: default avatarDudley Du <dudl@cypress.com>
Signed-off-by: default avatarDmitry Torokhov <dmitry.torokhov@gmail.com>
parent 36e9615b

Documentation/devicetree/bindings/input/cypress,cyapa.txt

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Cypress I2C Touchpad



Required properties:

- compatible: must be "cypress,cyapa".

- reg: I2C address of the chip.

- interrupt-parent: a phandle for the interrupt controller (see interrupt

	binding[0]).

- interrupts: interrupt to which the chip is connected (see interrupt

	binding[0]).



Optional properties:

- wakeup-source: touchpad can be used as a wakeup source.

- pinctrl-names: should be "default" (see pinctrl binding [1]).

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

	pinctrl binding [1]).

- vcc-supply: a phandle for the regulator supplying 3.3V power.



[0]: Documentation/devicetree/bindings/interrupt-controller/interrupts.txt

[1]: Documentation/devicetree/bindings/pinctrl/pinctrl-bindings.txt



Example:

	&i2c0 {

		/* ... */



		/* Cypress Gen3 touchpad */

		touchpad@67 {

			compatible = "cypress,cyapa";

			reg = <0x24>;

			interrupt-parent = <&gpio>;

			interrupts = <2 IRQ_TYPE_EDGE_FALLING>;	/* GPIO 2 */

			wakeup-source;

		};



		/* Cypress Gen5 and later touchpad */

		touchpad@24 {

			compatible = "cypress,cyapa";

			reg = <0x24>;

			interrupt-parent = <&gpio>;

			interrupts = <2 IRQ_TYPE_EDGE_FALLING>;	/* GPIO 2 */

			wakeup-source;

		};



		/* ... */

	};

Documentation/devicetree/bindings/vendor-prefixes.txt

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@@ -54,6 +54,7 @@ cortina Cortina Systems, Inc. 
cosmic	Cosmic Circuits

crystalfontz	Crystalfontz America, Inc.

cubietech	Cubietech, Ltd.

cypress	Cypress Semiconductor Corporation

dallas	Maxim Integrated Products (formerly Dallas Semiconductor)

davicom	DAVICOM Semiconductor, Inc.

delta	Delta Electronics, Inc.

drivers/input/mouse/cyapa.c

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@@ -26,6 +26,7 @@ 
#include <linux/uaccess.h>

#include <linux/pm_runtime.h>

#include <linux/acpi.h>

#include <linux/of.h>

#include "cyapa.h"
@@ -1487,11 +1488,20 @@ static const struct acpi_device_id cyapa_acpi_id[] = { 
MODULE_DEVICE_TABLE(acpi, cyapa_acpi_id);

#endif



#ifdef CONFIG_OF

static const struct of_device_id cyapa_of_match[] = {

	{ .compatible = "cypress,cyapa" },

	{ /* sentinel */ }

};

MODULE_DEVICE_TABLE(of, cyapa_of_match);

#endif



static struct i2c_driver cyapa_driver = {

	.driver = {

		.name = "cyapa",

		.pm = &cyapa_pm_ops,

		.acpi_match_table = ACPI_PTR(cyapa_acpi_id),

		.of_match_table = of_match_ptr(cyapa_of_match),

	},



	.probe = cyapa_probe,