ADD TOUCH SCREEN DRIVER

1. Add Touch Screen Driver File¶

path：kernel/drivers/input/touchscreen/

Click to get the driver

Makefile: compile the added files (optional module/buildin)

Click to get commit

2. DTS Adds Touch Screen I2C padmux Settings¶

eg：kernel/arch/arm/boot/dts/infinity2m-ssc011a-s01a-display.dtsi

Refer to GOODIX config in public version, select corresponding I2C according the hardware connection:

reg = <0x40>;  //i2c slave_id  
gslx680_rst    //Reset pin
gslx680_int   //Interrupt pin

After the above steps are completed, compile and update the kernel, there will be a corresponding node /dev/input/eventX(Generally event0).

Note:

1. Close the unused TouchScreen, two devices cannot be used at the same time.

2. Do not set the multiplexing of rst/int pin in dts. For example, the int used here in GSLX680 is GPIO0, then GPIO0 configuration need to be removed in kernel/arch/arm/boot/dts/infinity2m-ssc011a-s01a-padmux-display.dtsi.