tree c8c30f96f2ffed883c55b68b6378d4a789f6a2c1
parent 439d7ac0879f9fd4c56f212e03477f358133c56c
author Ben Widawsky <benjamin.widawsky@linux.intel.com> 1397165561 -0700
committer Daniel Vetter <daniel.vetter@ffwll.ch> 1397209101 +0200

drm/i915/bdw: Add 42ms delay for IPS disable

This is a requirement added to the spec. This patch will prevent
persistent corruption on the display.

v2: Make the wait before the vblank wait. (Art)
Try to finish early by polling the register
s/present/prevent (Chris)

Cc: Art Runyan <arthur.j.runyan@intel.com>
Signed-off-by: Ben Widawsky <ben@bwidawsk.net>
[danvet: Upgrade debug output to ERROR.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>