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Commit 842ff286 authored by Anthony Kim's avatar Anthony Kim Committed by Dmitry Torokhov
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Input: add support for HiDeep touchscreen 



The HiDeep touchscreen device is a capacitive multi-touch controller
mainly for multi-touch supported devices use. It use I2C interface for
communication to IC and provide axis X, Y, Z locations for ten finger
touch through input event interface to userspace.

It support the Crimson and the Lime two type IC. They are different
the number of channel supported and FW size. But the working protocol
is same.

Signed-off-by: default avatarAnthony Kim <anthony.kim@hideep.com>
Acked-by: default avatarRob Herring <robh+dt@kernel.org>
Signed-off-by: default avatarDmitry Torokhov <dmitry.torokhov@gmail.com>
parent 4a1a57df

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

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* HiDeep Finger and Stylus touchscreen controller



Required properties:

- compatible		: must be "hideep,hideep-ts"

- reg			: I2C slave address, (e.g. 0x6C).

- interrupt-parent : Interrupt controller to which the chip is connected.

- interrupts : Interrupt to which the chip is connected.



Optional properties:

- vdd-supply	: It is the controller supply for controlling

					 main voltage(3.3V) through the regulator.

- vid-supply	: It is the controller supply for controlling

					IO voltage(1.8V) through the regulator.

- reset-gpios	: Define for reset gpio pin.

						It is to use for reset IC.

- touchscreen-size-x	: X axis size of touchscreen

- touchscreen-size-y	: Y axis size of touchscreen

- linux,keycodes	: Specifies an array of numeric keycode values to

			be used for reporting button presses. The array can

			contain up to 3 entries.



Example:



#include "dt-bindings/input/input.h"



i2c@00000000 {



	/* ... */



	touchscreen@6c {

		compatible = "hideep,hideep-ts";

		reg = <0x6c>;

		interrupt-parent = <&gpx1>;

		interrupts = <2 IRQ_TYPE_LEVEL_LOW>;

		vdd-supply = <&ldo15_reg>";

		vid-supply = <&ldo18_reg>;

		reset-gpios = <&gpx1 5 0>;

		touchscreen-size-x = <1080>;

		touchscreen-size-y = <1920>;

		linux,keycodes = <KEY_HOME>, <KEY_MENU>, <KEY_BACK>;

	};

};

Documentation/devicetree/bindings/vendor-prefixes.txt

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@@ -137,6 +137,7 @@ gw Gateworks Corporation 
hannstar	HannStar Display Corporation

haoyu	Haoyu Microelectronic Co. Ltd.

hardkernel	Hardkernel Co., Ltd

hideep	HiDeep Inc.

himax	Himax Technologies, Inc.

hisilicon	Hisilicon Limited.

hit	Hitachi Ltd.

drivers/input/touchscreen/Kconfig

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@@ -354,6 +354,17 @@ config TOUCHSCREEN_GOODIX 
	  To compile this driver as a module, choose M here: the

	  module will be called goodix.



config TOUCHSCREEN_HIDEEP

	tristate "HiDeep Touch IC"

	depends on I2C

	help

	  Say Y here if you have a touchscreen using HiDeep.



	  If unsure, say N.



	  To compile this driver as a moudle, choose M here : the

	  module will be called hideep_ts.



config TOUCHSCREEN_ILI210X

	tristate "Ilitek ILI210X based touchscreen"

	depends on I2C

drivers/input/touchscreen/Makefile

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@@ -41,6 +41,7 @@ obj-$(CONFIG_TOUCHSCREEN_EGALAX_SERIAL) += egalax_ts_serial.o 
obj-$(CONFIG_TOUCHSCREEN_EXC3000)	+= exc3000.o

obj-$(CONFIG_TOUCHSCREEN_FUJITSU)	+= fujitsu_ts.o

obj-$(CONFIG_TOUCHSCREEN_GOODIX)	+= goodix.o

obj-$(CONFIG_TOUCHSCREEN_HIDEEP)	+= hideep.o

obj-$(CONFIG_TOUCHSCREEN_ILI210X)	+= ili210x.o

obj-$(CONFIG_TOUCHSCREEN_IMX6UL_TSC)	+= imx6ul_tsc.o

obj-$(CONFIG_TOUCHSCREEN_INEXIO)	+= inexio.o

drivers/input/touchscreen/hideep.c

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File added.

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