autism and sleep

Hi I am awaiting a disgnosis, and have been thinking about lots of things in my life one is sleep. All my life I have been a sleepaholic, when I was an early teen I could sleep for 14 hours easy, thats what teens did, but I never grew out of it. I have never woken up in my life feeling refreshed, I could always go back to bed, even at 10am after 12 hours. I have thought this was to do with the depression and feeling that when I was asleep nobody could get to be and make me do things I don't want to? However can it be part of autism? Interested on your views as I can not seem to find much online.

Rob