input: touchscreen: remove msg21xx mstar touch driver

Remove msg21xx mstar touch driver from the kernel code
as it has never been used in any of the recent platforms.

Change-Id: I0ac1f93d9736c402732b6c4a8d22b1bf3500e4c4
Signed-off-by: Vevek Venkatesan <vevekv@codeaurora.org>
Signed-off-by: Shantanu Jain <shjain@codeaurora.org>

Documentation/devicetree/bindings/input/touchscreen/msg21xx-ts.txt

@@ -1,71 +0,0 @@
-Mstar touch controller
-
-The mstar controller is connected to host processor
-via i2c. The controller generates interrupts when the
-user touches the panel. The host controller is expected
-to read the touch coordinates over i2c and pass the coordinates
-to the rest of the system.
-
-Required properties:
-
- - compatible		: should be "mstar,msg21xx".
- - 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.
- - vdd-supply		: Power supply needed to power up the device.
- - vcc_i2c-supply	: Power source required to power up i2c bus.
- - mstar,irq-gpio	: irq gpio which is to provide interrupts to host,
-				same as "interrupts" node. It will also
-				contain active low or active high information.
- - mstar,reset-gpio	: reset gpio to control the reset of chip.
- - mstar,display-coords : display coords in pixels. It is a four
-				tuple consisting of min x, min y, max x and
-				max y values.
- - pinctrl-names : This should be defined if a target uses pinctrl framework.
-			See "pinctrl" in Documentation/devicetree/bindings/pinctrl/msm-pinctrl.txt.
-			Specify the names of the configs that pinctrl can install in driver.
-			Following are the pinctrl configs that can be installed:
-			"pmx_ts_active" : Active configuration of pins, this should specify active
-			config defined in pin groups of interrupt and reset gpio.
-			"pmx_ts_suspend" : Disabled configuration of pins, this should specify sleep
-			config defined in pin groups of interrupt and reset gpio.
-			"pmx_ts_release" : Release configuration of pins, this should specify
-			release config defined in pin groups of interrupt and reset gpio.
- - mstar,num-max-touches: It defines the maximum number of touch supported by the controller.
- - mstar,hard-reset-delay-ms : hard reset delay in ms
- - mstar,post-hard-reset-delay-ms : post hard reset delay in ms
-
-Optional properties:
-
- - mstar,button-map : button map of key codes. It is a three tuple consisting of key codes.
- - mstar,panel-coords : panel coords for the chip in pixels.
-				It is a four tuple consisting of min x,
-				min y, max x and max y values.
- - mstar,ic-type : It defines the ic-type of the controller. Values are as folows:
-			1 -> msg2133.
-			2 -> msg21xxA.
-			3 -> msg26xxM.
-
-Example:
-	i2c@78b9000 { /* BLSP1 QUP5 */
-		mstar@26 {
-			compatible = "mstar,msg21xx";
-			reg = <0x26>;
-			interrupt-parent = <&msm_gpio>;
-			interrupts = <13 0x2008>;
-			mstar,irq-gpio = <&msm_gpio 13 0x00000001>;
-			mstar,reset-gpio = <&msm_gpio 12 0x0>;
-			vdd-supply = <&pm8916_l17>;
-			vcc_i2c-supply = <&pm8916_l6>;
-			mstar,display-coords = <0 0 480 854>;
-			pinctrl-names = "pmx_ts_active","pmx_ts_suspend";
-			pinctrl-0 = <&ts_int_active &ts_reset_active>;
-			pinctrl-1 = <&ts_int_suspend &ts_reset_suspend>;
-			mstar,button-map = <172 139 158>;
-			mstar,ic-type = <2>;
-			mstar,num_max_touches = <2>;
-			mstar,hard-reset-delay-ms = <100>;
-			mstar,post-hard-reset-delay-ms = <100>;
-		};
-	};

drivers/input/touchscreen/Kconfig

@@ -1128,17 +1128,6 @@ config TOUCHSCREEN_FT5X06_GESTURE
 
          If unsure, say N.
 
-config TOUCHSCREEN_MSTAR21XX
-	tristate "Mstar touchscreens"
-	depends on I2C
-	help
-	 Say Y here if you have a mstar touchscreen.
-
-	 If unsure, say N.
-
-	 To compile this driver as a module, choose M here: the
-	 module will be called msg21xx_ts.
-
 config TOUCHSCREEN_ROHM_BU21023
 	tristate "ROHM BU21023/24 Dual touch support resistive touchscreens"
 	depends on I2C

drivers/input/touchscreen/Makefile

@@ -98,5 +98,4 @@ obj-$(CONFIG_TOUCHSCREEN_TPS6507X)	+= tps6507x-ts.o
 obj-$(CONFIG_TOUCHSCREEN_ZFORCE)	+= zforce_ts.o
 obj-$(CONFIG_TOUCHSCREEN_COLIBRI_VF50)	+= colibri-vf50-ts.o
 obj-$(CONFIG_TOUCHSCREEN_ROHM_BU21023)	+= rohm_bu21023.o
-obj-$(CONFIG_TOUCHSCREEN_MSTAR21XX)	+= msg21xx_ts.o
 obj-$(CONFIG_TOUCHSCREEN_GT9XX)		+= gt9xx/