Oh yeah, there has been for quite a while now :-) The stlc45xx driver was announced by Kalle Valo just over two years ago and presented at the Berlin summit, then it was moved to the staging tree with kernel 2.6.30 and eventually merged with bits of p54 to form p54spi (in mainline now).

It's kinda sad that this isn't more widely known, it's one of the n8x0s' best success stories IMHO.