tree 00c15f894339869461ca039f8c749c7020c6f081
parent 1a01ab3b2dc4394c46c4c3230805748f632f6f74
author Jesse Barnes <jbarnes@virtuousgeek.org> 1351880041 -0700
committer Daniel Vetter <daniel.vetter@ffwll.ch> 1352674301 +0100

drm/i915: protect RPS/RC6 related accesses (including PCU) with a new mutex

This allows the power related code to run independently of the rest of
the pipeline, extending the resume and init time improvements into
userspace, which would otherwise have been blocked on the struct mutex
if we were doing PCU communication.

v2: Also convert the locking for the rps sysfs interface.

Suggested-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org> (v1)
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>