Finding right Android touchscreen driver file

Question

My goal is to add a single printk command to one of the driver files for my phone\'s touchscreen. I would like to run this printk command everytime the screen recieves touch

Answer 1

Try running the getevent command in a shell on the Android device. The touchscreen should be listed, and the name should be the driver being used.

Here's what came up on my phone:

add device 7: /dev/input/event1
  name:     "synaptics_dsx"

This means my phone uses the synaptics_dsx touchscreen driver.