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

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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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Adam Jackson 2012-09-18 10:58:50 -04:00 • committed by Daniel Vetter

parent b091cd928d

commit 07d3dc1839

1 changed files with 34 additions and 1 deletions

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drivers/gpu/drm/i915/intel_dp.c

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