[+] Added Goodix GT801 touchscreen support

drivers/amlogic/input/touchscreen/Kconfig

@@ -92,6 +92,13 @@ config GOODIX_CAPACITIVE_TOUCHSCREEN
 	help
 	  Say Y here if you want to use the Goodix capacitive panel.
 
+config GOODIX_GT801_CAPACITIVE_TOUCHSCREEN
+	tristate "Goodix I2C GT801 capacitive touchscreen"
+	depends on I2C
+	default n
+	help
+	  Say Y here if you want to use the Goodix Guitar touch.
+
 config GOODIX_GT81XX_CAPACITIVE_TOUCHSCREEN
 	tristate "Goodix I2C GT81XX capacitive touchscreen"
 	depends on I2C

drivers/amlogic/input/touchscreen/Makefile

@@ -6,6 +6,7 @@
 obj-$(CONFIG_MESON_INPUT_TOUCHSCREEN) += common.o
 obj-$(CONFIG_FOCALTECH_CAPACITIVE_TOUCHSCREEN)		+=focaltech_5x06.o
 obj-$(CONFIG_GOODIX_GT81XX_CAPACITIVE_TOUCHSCREEN)	+= goodix_gt81xx.o
+obj-$(CONFIG_GOODIX_GT801_CAPACITIVE_TOUCHSCREEN)	+= gt801_ts.o
 obj-$(CONFIG_GSLX680_CAPACITIVE_TOUCHSCREEN)	+= gslx680.o aml_gsl_common.o
 obj-$(CONFIG_GSLX680B_CAPACITIVE_TOUCHSCREEN)	+= gslx680B.o
 obj-$(CONFIG_GSLX680_COMPATIBLE_CAPACITIVE_TOUCHSCREEN)        += gslx680_compatible.o aml_gsl_common.o

drivers/amlogic/input/touchscreen/aml.dtd

@@ -94,5 +94,36 @@
 			fw_file = "/etc/touch/ct36x.dat";
 		};
 #endif
+
+#ifdef CONFIG_GOODIX_GT801_CAPACITIVE_TOUCHSCREEN
+//$$ DEVICE = "touch_gt801"
+//$$ L2 PROP_STR = "status"
+//$$ L2 PROP_STR = "touch_name"
+//$$ L3 PROP_STR = "i2c_bus"
+//$$ L3 PROP_U32 ="reg"
+//$$ L3 PROP_U32 ="irq"
+//$$ L3 PROP_STR = "gpio_interrupt"
+//$$ L3 PROP_STR = "gpio_reset"
+//$$ L3 PROP_U32 ="xres"
+//$$ L3 PROP_U32 ="yres"
+//$$ L3 PROP_U32 ="pol"
+//$$ L3 PROP_STR = "irq_edge"
+//$$ L3 PROP_STR = "config_file"
+			touch_gt801:gt801{
+			           compatible = "goodix,gt801";
+			           status = "okay";
+			           touch_name = "gt801";
+			           i2c_bus = "i2c_bus_a";
+			           reg = <0x55>;
+			           irq = <0>;
+			           gpio_interrupt = "GPIOX_19";
+			           gpio_reset = "GPIOY_8";
+			           xres = <800>;
+			           yres = <480>;
+			           pol = <0x4>;  // bit0 - swap x, bit1 - swap y , bit2 - swap xy
+			           irq_edge= "GPIO_IRQ_LOW"
+			           /*config_file = "/etc/touch/goodix.cfg";*/
+			};
+#endif
    };
 #endif

drivers/amlogic/input/touchscreen/goodix_queue.h

@@ -1,11 +1,11 @@
-/*
- * include/linux/goodix_queue.h
- *
- * Copyright (C) 2010 Goodix, Inc.
- * Author:	Eltonny
- * Date:	2010.9.15
- */
- 
+/*---------------------------------------------------------------------------------------------------------
+ * kernel/include/linux/goodix_queue.h
+ * Copyright(c) 2010 Goodix Technology Corp. All rights reserved.      
+ * Author: Eltonny
+ * Date: 2010.11.11                                    
+ *                                                                                                         
+ *---------------------------------------------------------------------------------------------------------*/
+
 /* 用于管理手指序列的伪队列操作函数，
  * 适用于Goodix的Guitar小屏驱动
  * 调整手指上报顺序以避免出现手指ID交换现象
@@ -14,10 +14,13 @@
 #ifndef _LINUX_GOODIX_QUEUE_H
 #define	_LINUX_GOODIX_QUEUE_H
 
-struct point_node
+struct point_node 
 {
-	unsigned int num;
-	unsigned int state;
+	uint8_t num;
+	uint8_t state;
+	uint8_t pressure;
+	unsigned int x;
+	unsigned int y;
 };
 
 struct point_queue
@@ -26,7 +29,6 @@ struct point_queue
 	struct point_node pointer[MAX_FINGER_NUM];
 };
 
-
 /*******************************************************	
 功能：
 	删除手指队列中松键的手指
@@ -35,18 +37,21 @@ struct point_queue
 ********************************************************/
 static void del_point(struct point_queue *point_list)
 {
-	int count = point_list->length-1;
+	int count = point_list->length - 1;
 	int position;
-	for(; count >= 0; count--)		//note: must search from tail to head
-            if(point_list->pointer[count].state == FLAG_UP)
-            	{             	
-			if(point_list->length == 0 )
-				return ;
+	for (; count >= 0; count--)		//note: must search from tail to head			
+	{
+		if (point_list->pointer[count].state == FLAG_UP)
+		{
+			if (point_list->length == 0)
+				return;
 			position = count;
-			for(; position < MAX_FINGER_NUM -1; position++)
-				point_list->pointer[position] = point_list->pointer[position+1];
+			for (; position < MAX_FINGER_NUM - 1; position++)
+				point_list->pointer[position] =
+						point_list->pointer[position + 1];
 			point_list->length--;
-            	}
+		}
+	}
 }
 
 /*******************************************************	
@@ -58,17 +63,29 @@ static void del_point(struct point_queue *point_list)
 return：
 	是否成功增加手指
 ********************************************************/
-static int add_point(struct point_queue *point_list, int num)
+static int add_point(struct point_queue *point_list, int num) 
 {
-	if(point_list->length >= MAX_FINGER_NUM || num < 0 )
+	if (point_list->length >= MAX_FINGER_NUM || num < 0)
 		return -1;
 	point_list->pointer[point_list->length].num = num;
 	point_list->pointer[point_list->length].state = FLAG_DOWN;
 	point_list->length++;
 	return 0;
 }
 
-//
+
+static int search_point(struct point_queue *point_list, int num) 
+{
+	int count = 0;
+	if (point_list->length <= 0 || num < 0 || num > MAX_FINGER_NUM)
+		return -1;	//no data
+	for (; count < point_list->length; count++)
+		if (point_list->pointer[count].num == num)
+			return count;
+		else
+			continue;
+	return -1;
+}
 /*******************************************************	
 功能：
 	查找松键的手指并设置标志位为FLAG_UP
@@ -78,18 +95,16 @@ static int add_point(struct point_queue *point_list, int num)
 return：
 	是否成功设置手指标志位
 ********************************************************/
-static int set_up_point(struct point_queue *point_list, int num)
+static int set_up_point(struct point_queue *point_list, int num) 
 {
-	int count = 0;
-	if(point_list->length <= 0 || num < 0 || num > MAX_FINGER_NUM)
+	int number = 0;
+	if (point_list->length <= 0 || num < 0 || num > MAX_FINGER_NUM)
 		return -1;	//no data
-	for(; count < point_list->length; count++)
-		if(point_list->pointer[count].num == num)
-		{
-            		point_list->pointer[count].state = FLAG_UP;
-            		return 0;
-		}
-		else continue;
+	number = search_point(point_list, num);
+	if (num >= 0) {
+		point_list->pointer[number].state = FLAG_UP;
+		return 0;
+	}
 	return -1;
 }