[SRU] [E/Unstable/OEM-OSP1-B] [PATCH 0/1] Fix MST support on Ice Lake

[Kai-Heng Feng]

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BugLink: https://bugs.launchpad.net/bugs/1854432

[Impact]
Some HDMI and DP doesn't count as external monitor on ICL MST.

[Fix]
Fix external port MST check on Ice Lake.

[Test]
DP and HDMI ports can only mirror display.
After applying this patch bot DP and HDMI ports can drive its own
external display.

[Regression Potential]
Low. This fix targets Gen 11 and Gen 12 Intel graphics, older systems
are unaffected.

Lucas De Marchi (1):
  drm/i915: fix port checks for MST support on gen >= 11

 drivers/gpu/drm/i915/display/intel_dp.c     |  7 ++-----
 drivers/gpu/drm/i915/display/intel_dp_mst.c | 22 +++++++++++++++------
 2 files changed, 18 insertions(+), 11 deletions(-)

-- 
2.17.1