input: touchscreen: gt1x: forward port the Goodix gt1x touchscreen driver

drivers/input/touchscreen/Kconfig

@@ -1274,4 +1274,16 @@ config TOUCHSCREEN_ROHM_BU21023
 	  To compile this driver as a module, choose M here: the
 	  module will be called bu21023_ts.
 
+config TOUCHSCREEN_GT1X
+	tristate "GT1X touchscreen"
+	depends on I2C
+	help
+	  Say Y here if you have a GT1X based touchscreen
+	  controller.
+
+	  If unsure, say N.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called gt1x.
+
 endif

drivers/input/touchscreen/Makefile

@@ -107,3 +107,4 @@ obj-$(CONFIG_TOUCHSCREEN_ZET6223)	+= zet6223.o
 obj-$(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_GT1X)		+= gt1x/

drivers/input/touchscreen/gt1x/Makefile

+#
+# Makefile for the GT1X touchscreen driver.
+#
+
+obj-y += gt1x.o gt1x_generic.o gt1x_update.o gt1x_tools.o gt1x_extents.o
+

drivers/input/touchscreen/gt1x/gt1x.h

+/* drivers/input/touchscreen/gt1x.h
+ * 
+ * 2010 - 2013 Goodix Technology.
+ * 
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ * 
+ * This program is distributed in the hope that it will be a reference 
+ * to you, when you are integrating the GOODiX's CTP IC into your system, 
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of 
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU 
+ * General Public License for more details.
+ * 
+ * Version: 1.4   
+ * Release Date:  2015/07/10
+ */
+
+#ifndef _GOODIX_GT1X_H_
+#define _GOODIX_GT1X_H_
+#include "gt1x_generic.h"
+#include <linux/gpio.h>
+#ifdef GTP_CONFIG_OF
+#include <linux/of_gpio.h>
+#include <linux/regulator/consumer.h>
+#endif
+#ifdef CONFIG_FB
+#include <linux/notifier.h>
+#include <linux/fb.h>
+#endif
+#ifdef CONFIG_HAS_EARLYSUSPEND
+#include <linux/earlysuspend.h>
+#endif
+
+#define IIC_MAX_TRANSFER_SIZE       250
+
+/* Customize your I/O ports & I/O operations */
+#ifdef GTP_CONFIG_OF
+extern int gt1x_rst_gpio;
+extern int gt1x_int_gpio;
+#define GTP_RST_PORT gt1x_rst_gpio
+#define GTP_INT_PORT gt1x_int_gpio
+#else
+#define GTP_RST_PORT    102	//S5PV210_GPJ3(6)
+#define GTP_INT_PORT    52	//S5PV210_GPH1(3)
+#endif
+
+#define GTP_INT_IRQ     gpio_to_irq(GTP_INT_PORT)
+//#define GTP_INT_CFG     S3C_GPIO_SFN(0xF)
+
+#define GTP_GPIO_AS_INPUT(pin)          do{\
+                                            gpio_direction_input(pin);\
+                                        }while(0)
+#define GTP_GPIO_AS_INT(pin)            do{\
+                                            GTP_GPIO_AS_INPUT(pin);\
+                                        }while(0)
+#define GTP_GPIO_GET_VALUE(pin)         gpio_get_value(pin)
+#define GTP_GPIO_OUTPUT(pin,level)      gpio_direction_output(pin,level)
+#define GTP_IRQ_TAB                     {IRQ_TYPE_EDGE_RISING, IRQ_TYPE_EDGE_FALLING, IRQ_TYPE_LEVEL_LOW, IRQ_TYPE_LEVEL_HIGH}
+
+#endif /* _GOODIX_GT1X_H_ */