/tmp # wget "http://fghhgh.150m.com/proc_gpio.ko"
/tmp # insmod proc_gpio.ko
/tmp # lsmod
Module                  Size  Used by
proc_gpio               2704  0

/tmp # cat /proc/gpio/info
GPIO_IN   0X7FFF20
GPIO_OUT  0X000020
GPIO_DIR  0X000020



echo 1 > /proc/gpio/2_dir
echo 1 > /proc/gpio/2_out
WLAN LED on

echo 1 > /proc/gpio/2_dir
echo 0 > /proc/gpio/2 
WLAN LED off


see http://fghhgh.150m.com/ for more...