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: v3.8-rc1~82^2~192^2~224
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=07d3dc18396790d9d394f4f0717a91b3a845c758;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>
---

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