drm/i915: tune Sandy Bridge DRPS constants

These make us increase our frequency much more readily, and decrease
them only after significant idle time, resulting in a 20% performance
increase for nexuiz.

Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
This commit is contained in:
Jesse Barnes 2011-01-18 15:49:25 -08:00 • committed by Chris Wilson
commit ccab5c8275
3 changed files with 46 additions and 8 deletions