drm/i915/vlv: Valleyview support for forcewake Individual power wells.

Browse source

Split vlv force wake routines to help individually control Media/Render
well based on the register access.

We've seen power savings in the lower sub-1W range on workloads that
only need on of the power wells, e.g. glbenchmark, media playback

Note: The same split isn't there for the forcewake queue, only the
forcwake domains are split.

Signed-off-by: Deepak S <deepak.s@intel.com>
Reviewed-by: Jesse Barnes <jbarnes@virtuousgeek.org>
[danvet: Rebase on top of the removed forcewake hack in the ring irq
get/put code and add a note to add Deepak's answer to Chris question.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

...

This commit is contained in:

Deepak S 2013-11-23 14:55:43 +05:30 • committed by Daniel Vetter

parent c8d9a5905e

commit 940aece471

3 changed files with 176 additions and 31 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

17

drivers/gpu/drm/i915/i915_drv.h

View file

7

drivers/gpu/drm/i915/intel_pm.c

View file

177

drivers/gpu/drm/i915/intel_uncore.c

View file