tree 32741ad2158a53078673ed9f038bcb8a9fc494f9
parent edb39244fad2e96ba03ea97a4b2c585c7f2fc7e4
author Adam Jackson <ajax@redhat.com> 1347980330 -0400
committer Daniel Vetter <daniel.vetter@ffwll.ch> 1349193967 +0200

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>