tree 5c41b544a86c04de609c4dad245bb93cd2e000e7
parent 14d200c5e5bd19219d930bbb9a5a22758c8f5bec
author Jesse Barnes <jbarnes@virtuousgeek.org> 1233944561 -0800
committer Dave Airlie <airlied@linux.ie> 1234093384 +1000

drm/i915: add get_vblank_counter function for GM45

As discussed in the long thread about vblank related timeouts, it turns out
GM45 has different frame count registers than previous chips.  This patch
adds support for them, which prevents us from waiting on really stale
sequence values in drm_wait_vblank (which rather than returning immediately
ends up timing out or getting interrupted).

Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Dave Airlie <airlied@linux.ie>