IMX6 GT9XX 10.1寸触摸屏移植

硬件平台：IMX6Q+GT928（10.1寸）
操作系统：Android 4.2.2

GT928接口原理图

触摸屏接口用到的硬件外设
I2C => I2C3
RST => GPIO2_27
INT => GPIO6_8

注册GT928 i2c设备

static struct i2c_board_info mxc_i2c2_board_info[] __initdata = {    {        I2C_BOARD_INFO("sgtl5000", 0x0a),    },    {        I2C_BOARD_INFO("ov564x", 0x3c),        .platform_data = (void *)&camera_data,    },    {        I2C_BOARD_INFO("mxc_hdmi_i2c", 0x50),    },    {        I2C_BOARD_INFO("Goodix-TS", 0x14),//      .irq = gpio_to_irq(SABRESD_CAP_TCH_INT0),    },};

修改gt9xx.h对rst和int脚的定义

#define GTP_RST_PORT    IMX_GPIO_NR(2, 27)      #define GTP_INT_PORT    IMX_GPIO_NR(6, 8) 

修改touchscreen驱动Makefile

ifneq ($(wildcard drivers/input/touchscreen/gt9xx.c),)obj-$(CONFIG_TOUCHSCREEN_GT9XX)        += gt9xx.o gt9xx_update.o goodix_tool.o elseobj-$(CONFIG_TOUCHSCREEN_GT9XX)        += gt9xx.module gt9xx_update.module goodix_tool.moduleendif

修改touchscreen驱动Kconfig

config TOUCHSCREEN_TSC2007    tristate "TSC2007 based touchscreens"    depends on I2C    help      Say Y here if you have a TSC2007 based touchscreen.      If unsure, say N.      To compile this driver as a module, choose M here: the      module will be called tsc2007.config TOUCHSCREEN_GT9XX    tristate "GT9XX based touchscreens"    depends on I2C    help      Say Y here if you have a Gt9xx based touchscreen.      If unsure, say N.      To compile this driver as a module, choose M here: the      module will be called gt9xx.

配置内核

gt928驱动下载地址
附上调试信息