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Commit f5f30dca authored by Paul Chang's avatar Paul Chang Committed by Vijay Navnath Kamble
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input: touchscreen: Add himax touchscreen support 



apq8053-lite FEP-V2 SOM has 2 variants of display Panel -
8" and 10". For 8" display panel the touch vendor is Himax.
Add Himax touchscreen support for 8" Display Panel.

Change-Id: Icfbf21f800b09d83122795fc26f833d5c3bd6bcb
Signed-off-by: default avatarPaul Chang <poyuan_chang@himax.com.tw>
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Git-commit: f855d7e895df3d307ceee5cef69d410e816a4987
Git-Repo:  https://github.com/HimaxSoftware/msm-3.18


Signed-off-by: default avatarVijay Navnath Kamble <vkambl@codeaurora.org>
parent 177532b0

Documentation/devicetree/bindings/input/touchscreen/himax_i2c_ts.txt

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Himax touch controller



Required properties:



 - compatible	: should be "himax,hxcommon"

 - reg			: i2c slave address of the device

 - interrupt-parent	: parent of interrupt

 - interrupts		: touch sample interrupt to indicate presense or release

				of fingers on the panel.

 - himax,irq-gpio	: irq gpio

 - himax,reset-gpio	: reset gpio



Optional property:

 - vdd-supply		: Analog power supply needed to power device

 - vcc_i2c-supply		: Power source required to pull up i2c bus

 - himax,i2c-pull-up	: specify to indicate pull up is needed

 - himax,disable-gpios	: specify to disable gpios in suspend (power saving)

 - himax,button-map		: virtual key code mappings to be used

 - himax,x-flip		: modify orientation of the x axis

 - himax,y-flip		: modify orientation of the y axis

 - himax,panel-coords	: touch panel min x, min y, max x and

					max y resolution

 - himax,display-coords	: display min x, min y, max x and

					max y resolution

 - himax,reset-delay	: reset delay for controller (ms), default 100

 - himax,fw-image-name	: name of firmware .img file in /etc/firmware

 - himax,power-down		: fully power down regulators in suspend

 - himax,do-lockdown	: perform one time lockdown procedure



Example:

	i2c@f9927000 { /* BLSP1 QUP5 */

		cell-index = <5>;

		compatible = "himax,hxcommon";

		#address-cells = <1>;

		#size-cells = <0>;

		reg-names = "qup_phys_addr";

		reg = <0xf9927000 0x1000>;

		interrupt-names = "qup_err_intr";

		interrupts = <0 99 0>;

		gpios = <&msmgpio 19 0>, /* SCL */

			<&msmgpio 18 0>; /* SDA */

		qcom,i2c-bus-freq = <100000>;

		qcom,i2c-src-freq = <19200000>;



		himax_ts@20 {

			compatible = "himax,hxcommon"

			reg = <0x20>;

			interrupt-parent = <&tlmm>;

			interrupts	= <255 0x2008>;

			vdd-supply 	= <&pm8994_l15>;

			avdd-supply = <&pm8994_l22>;

			himax,panel-coords = <0 720 0 1440>;

			himax,display-coords = <0 720 0 1440>;

			himax,irq-gpio = <&tlmm 255 0x2008>;

			himax,rst-gpio = <&tlmm 8 0x00>;

		};

	};

Documentation/devicetree/bindings/vendor-prefixes.txt

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@@ -129,6 +129,7 @@ hitex Hitex Development Tools 
holt	Holt Integrated Circuits, Inc.

honeywell	Honeywell

hp	Hewlett Packard

himax   Himax Coroporation

i2se	I2SE GmbH

ibm	International Business Machines (IBM)

idt	Integrated Device Technologies, Inc.

drivers/input/touchscreen/Kconfig

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@@ -1291,4 +1291,15 @@ config TOUCHSCREEN_GT9XX_v28 


source "drivers/input/touchscreen/gt9xx_v2.8/Kconfig"



config TOUCHSCREEN_HIMAX_CHIPSET

	bool "Himax touchpanel CHIPSET"

	depends on I2C

	help

	  Say Y here if you have a Himax CHIPSET touchscreen.

	  HIMAX controllers are multi touch controllers which can

	  report 10 touches at a time.



          If unsure, say N.



source "drivers/input/touchscreen/hxchipset/Kconfig"

endif

drivers/input/touchscreen/Makefile

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@@ -105,3 +105,4 @@ obj-$(CONFIG_TOUCHSCREEN_COLIBRI_VF50) += colibri-vf50-ts.o 
obj-$(CONFIG_TOUCHSCREEN_ROHM_BU21023)	+= rohm_bu21023.o

obj-$(CONFIG_TOUCHSCREEN_FTS)		+= focaltech_touch/

obj-$(CONFIG_TOUCHSCREEN_GT9XX_v28)		+= gt9xx_v2.8/

obj-$(CONFIG_TOUCHSCREEN_HIMAX_CHIPSET)	+= hxchipset/

drivers/input/touchscreen/hxchipset/Kconfig

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#

# Himax Touchscreen driver configuration

#



config TOUCHSCREEN_HIMAX_I2C

	tristate "HIMAX chipset i2c touchscreen"

	depends on TOUCHSCREEN_HIMAX_CHIPSET

	help

		Say Y here to enable support for HIMAX CHIPSET over I2C based touchscreens.

		If unsure, say N.



		To compile this driver as a module,

		This enables support for HIMAX CHIPSET over I2C based touchscreens.



config TOUCHSCREEN_HIMAX_DEBUG

	tristate "HIMAX debug function"

	depends on TOUCHSCREEN_HIMAX_I2C

	help

		Say Y here to enable support for HIMAX debug function.



		If unsure, say N.



		To compile this driver as a module,

		This enables support for HIMAX debug function.



config TOUCHSCREEN_HIMAX_ITO_TEST

	tristate "HIMAX driver test over Dragon Board"

	depends on TOUCHSCREEN_HIMAX_I2C

	help

		Say Y here to enable support for HIMAX driver test over Dragon Board.



		If unsure, say N.



		To compile this driver as a module,

		this enables support for HIMAX driver test over Dragon Board.



config HMX_DB

	tristate "HIMAX driver test over Dragon Board"

	depends on TOUCHSCREEN_HIMAX_I2C

	help

		Say Y here to enable support for HIMAX driver test over Dragon Board.



		If unsure, say N.



		To compile this driver as a module,

		this enables support for HIMAX driver test over Dragon Board.