drm/i915: Refactor max WM level

Pull the expected max WM level determinations out to a separate
function. Will have another user soon.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Ville Syrjälä 2013-08-30 14:30:25 +03:00 • committed by Daniel Vetter
commit ad0d6dc485