tree 9a5470ca7c4044c9ff6d0aa47048e4838888b1b1
parent 1e69cd74af22cce3b882b155bef295ff68a40566
author Ville Syrjälä <ville.syrjala@linux.intel.com> 1425583191 +0200
committer Daniel Vetter <daniel.vetter@ffwll.ch> 1426627815 +0100

drm/i915: Enable the maxfifo PM5 mode when appropriate on CHV

CHV has a new knob in Punit to select between some memory power savings
modes PM2 and PM5. We can allow the deeper PM5 when maxfifo mode is
enabled, so let's do so in the hopes for moar power savings.

v2: Put the thing into a separate function to avoid churn later
v3: Don't break VLV

Reviewed-by: Vijay Purushothaman <vijay.a.purushothaman@linux.intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Arun R Murthy <arun.r.murthy@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>