drm/nv50-nvc0: initialise display sync channels

Also imports a couple of helper functions that'll be used to implement
page flipping in the following commits..

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
This commit is contained in:
Ben Skeggs 2011-02-07 13:29:23 +10:00
commit cdccc70eff
6 changed files with 246 additions and 6 deletions