drm/i915/vlv: Update the DSI ULPS entry/exit sequence
authorShobhit Kumar <shobhit.kumar@intel.com>
Thu, 3 Jul 2014 11:05:41 +0000 (16:35 +0530)
committerDaniel Vetter <daniel.vetter@ffwll.ch>
Wed, 9 Jul 2014 07:52:04 +0000 (09:52 +0200)
commitaceb365ca9a51fb604313c08ed3061d6cc643237
tree73c0dc2deec71a94f4d44344ab35b50dcb7785c4
parenta799a9780eb5c874d9d7ca0bbee66401ca98c013
drm/i915/vlv: Update the DSI ULPS entry/exit sequence

We should keep DEVICE_READY bit set in the ULPS enter sequence. In
exit sequence also we should set DEVICE_READY, but thats causing
blankout for me. Also exit sequence is simplified as per hw team
recommendation.

This should fix -
[drm:intel_dsi_clear_device_ready] *ERROR* DSI LP not going Low

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=80818
Signed-off-by: Shobhit Kumar <shobhit.kumar@intel.com>
Tested-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
drivers/gpu/drm/i915/intel_dsi.c