About LCD driver

Scott
Hi,

  I have a tiny6410 board with linux system. I am wondering how to turn on
the LCD by a GPIO pin when the LCD is off due to idling for a while. When
the GPIO pin is triggered from 0 to 1, the LCD will turn on just like I
touch the screen of the LCD and it will turn on.
  I am totally new to this area. Any help will be appreciated. Thanks.