drm/i915: Allow HDMI+HDMI cloning on g4x
authorVille Syrjälä <ville.syrjala@linux.intel.com>
Mon, 3 Mar 2014 14:15:31 +0000 (16:15 +0200)
committerDaniel Vetter <daniel.vetter@ffwll.ch>
Mon, 10 Mar 2014 20:48:20 +0000 (21:48 +0100)
commitc6f1495d4c20cfc48ef3527012c31b46527f3839
tree0401e69a3192950b4f2eaa558d973e74409cfcda
parent301ea74a57851c19e1438ceeaffab663f402f79f
drm/i915: Allow HDMI+HDMI cloning on g4x

BSpec is a bit unclear whether HDMI+HDMI cloning should work on g4x.
Tests on real hardware say that it does. Since g4x can't send
infoframes to more than one HDMI port anyway, we don't lose anything
by allow it.

For PCH platforms BSpec explicitly forbids HDMI+HDMI cloning.

Whether HDMI+HDMI cloning might also work on VLV is a bit unclear, but
since we'd at least lose the capability of sending infoframes to more
than one cloned HDMI port, it doesn't seem like a good idea to allow it.

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=73850
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@gmail.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
drivers/gpu/drm/i915/intel_hdmi.c