Testing Linux kernel drivers

i am newbie to linux kernel and all, is there any way to check the entry points of linux kernel drivers from command line? say for leds-lp5523?

i have seen this document says we can run some sample LED patterns by running the echo commands by running

cd /sys/class/leds/lp5523:channel2/device   echo "load" > engine3_mode echo "9d80400004ff05ff437f0000" > engine3_load   echo "111111111" > engine3_leds   echo "run" > engine3_mode

But i cant find this /sys/class/leds/lp5523:channel2/device directory in my Ubuntu x86-64 PC. Can anyone help me on this. Thanks in advance..