Commit d4ec0cb0 authored by Simon Shields's avatar Simon Shields Committed by Krzysztof Kozlowski
Browse files

ARM: dts: exynos: Add support for the touch-sensitive buttons on Midas family 



Add support for the capacitive touch-sensitive buttons of the
following smartphones:
- Samsung Galaxy SIII (I9300)
- Samsung Galaxy SIII 4G (I9305)
- Samsung Galaxy Note II (N7100)
- Samsung Galaxy Note II 4G (N7105)

The keycodes correspond to markings on the phone case.

Signed-off-by: default avatarSimon Shields <simon@lineageos.org>
[GNUtoo@cyberdimension.org: Fixed keycodes, modified commit message]
Signed-off-by: default avatarDenis 'GNUtoo' Carikli <GNUtoo@cyberdimension.org>
Signed-off-by: default avatarKrzysztof Kozlowski <krzk@kernel.org>
parent b6df5e2b

arch/arm/boot/dts/exynos4412-galaxy-s3.dtsi

+5 −0
Original line number Diff line number Diff line
@@ -168,3 +168,8 @@ 
	vdda-supply = <&ldo17_reg>;

	status = "okay";

};



&touchkey_reg {

	gpio = <&gpm0 0 GPIO_ACTIVE_HIGH>;

	status = "okay";

};

arch/arm/boot/dts/exynos4412-midas.dtsi

+29 −0
Original line number Diff line number Diff line
@@ -13,6 +13,7 @@ 
#include "exynos4412.dtsi"

#include "exynos4412-ppmu-common.dtsi"

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

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

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

#include <dt-bindings/clock/maxim,max77686.h>

#include <dt-bindings/pinctrl/samsung.h>
@@ -92,6 +93,15 @@ 
		enable-active-high;

	};



	touchkey_reg: voltage-regulator-6 {

		compatible = "regulator-fixed";

		regulator-name = "LED_VDD_3.3V";

		regulator-min-microvolt = <3300000>;

		regulator-max-microvolt = <3300000>;

		enable-active-high;

		status = "disabled";

	};



	gpio-keys {

		compatible = "gpio-keys";

		pinctrl-names = "default";
@@ -197,6 +207,25 @@ 
		};

	};



	i2c-gpio-4 {

		compatible = "i2c-gpio";

		sda-gpios = <&gpl0 2 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>;

		scl-gpios = <&gpl0 1 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>;

		i2c-gpio,delay-us = <2>;

		#address-cells = <1>;

		#size-cells = <0>;



		touchkey@20 {

			compatible = "cypress,midas-touchkey";

			reg = <0x20>;

			vdd-supply = <&touchkey_reg>;

			vcc-supply = <&ldo5_reg>;

			interrupt-parent = <&gpj0>;

			interrupts = <3 IRQ_TYPE_EDGE_FALLING>;

			linux,keycodes = <KEY_BACK KEY_MENU>;

		};

	};



	i2c-mhl {

		compatible = "i2c-gpio";

		gpios = <&gpf0 4 GPIO_ACTIVE_HIGH>, <&gpf0 6 GPIO_ACTIVE_HIGH>;

arch/arm/boot/dts/exynos4412-n710x.dts

+5 −0
Original line number Diff line number Diff line
@@ -73,3 +73,8 @@ 
	vdda-supply = <&cam_vdda_reg>;

	status = "okay";

};



&touchkey_reg {

	gpio = <&gpm0 5 GPIO_ACTIVE_HIGH>;

	status = "okay";

};

CRA Git | Maintained and supported by SUSTech CRA and CCSE