From: Adam Jackson <ajax@redhat.com>
Date: Tue, 18 Sep 2012 14:58:50 +0000 (-0400)
Subject: drm/i915/dp: Be smarter about connection sense for branch devices
X-Git-Tag: v3.7-rc1~86^2^2~9
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=caf9ab24e352102ec9dc6df82c78c3a9082109d6;p=pandora-kernel.git

drm/i915/dp: Be smarter about connection sense for branch devices

If there's no downstream device, DPCD success is good enough.  If
there's a hotplug-capable downstream device, count the number of
connected sinks in DP_SINK_STATUS and return success if it's non-zero.
Otherwise, probe DDC and report appropriately.

v2: Check DP_SINK_STATUS instead of something unrelated to sink status.

Tested-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Adam Jackson <ajax@redhat.com>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
---

Reading git-diff-tree failed