GT911 LINUX 驱动添加

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1. 将 https://download.csdn.net/download/du2005023029/11855968 GT911驱动 gt9xx文件 夹放在Linux 源码 drivers/input/touchscreen 下

修改drivers/input/touchscreen Makefile

obj-$(CONFIG_TOUCHSCREEN_GOODIX) += gt9xx/

2. 更改系统配置

Device drivers —> Input device support —> [*] Touchscreens —> <*> Goodix I2C touchscreen

3.在设备树中添加 GT911的配置

i2c@3160000 {

goodix_ts@5d {

compatible = “goodix,gt9xx”;

reg = <0x5d>;

goodix,rst-gpio = <&tegra_aon_gpio TEGRA_AON_GPIO(S,3) GPIO_ACTIVE_HIGH>;

goodix,irq-gpio = <&tegra_aon_gpio TEGRA_AON_GPIO(AA,7) IRQ_TYPE_EDGE_FALLING>;

goodix,cfg-group0 = [

5D 38 04 80 07 05 35 00 01 08 1E 0F 50 32 03 05 00 00 00 00 11 11 00 17 19 1C 14 89 29 0E 50 52 0F 0A 00 00 00 9A 02 1C 00 01 05 00 00 00 00 09 11 00 00 3E 6C 8F F5 02 07 00 00 04 D9 41 00 AE 49 00 8A 51 00 70 5B 00 5C 66 00 5C 00 00 00 00 F0 4A 3A FF FF 27 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 1C 1A 18 16 14 12 10 0E 0C 0A 08 06 04 02 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 02 04 06 08 0A 0F 10 12 22 21 20 1F 1E 1D 1C 18 16 FF FF FF FF FF FF FF FF 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 48 01];

};

};

note: 1. i2c@3160000 根据平台总线地址进行相应的更改

2. goodix,cfg-group0 配置表需要LCD厂家给，也就是gt911 0x8047寄存器开始186字节的配置信息

注意: 我的是MIPI 接口的电容屏 默认是竖屏，gtp_touch_down 函数实现了横屏 、竖屏的转换 ，gt9xx.h文件中 ROTATE90DEGREE 为1 时是竖屏，为0 为横屏。gt9xx.h 也定义了屏幕的分辨率

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