[SRU][OEM-5.14/J][PATCH 0/4] Fix DP tunneling issues on AMD Rembrandt

[Mario Limonciello]

BugLink: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1983143

When a Thunderbolt monitor or Thunderbolt dock are connected to a USB4
port on AMD Yellow Carp (Rembrandt) a software connection manager works
with the hardware to initialize tunnels.

One of those tunnels is for DP (display port). It was observed that
on both the OEM-5.14 as well as Jammy-5.15 kernel that DP tunneling
specifically when connecting to a Thunderbolt monitor fails.
This circumstance does not happen on OEM-5.17 or mainline kernels.

This is due to a backport error on the USB4 patch series that went
into OEM-5.14 and moved forward to Jammy-5.15.  Patch 1/4 in this
series corrects that error as minimally as possible as a SAUCE patch.

It was also observed that DP tunneling is not working for Thunderbolt
monitor connected at boot, but this is a different root cause.
The "Pre-OS" connection manager creates DP tunnels that are expected
to be re-used by the OS connection manager. The remaining patches in
this series enable this flow.

For this whole flow to work an updated AMDGPU DMCUB firmware is also
needed.  This is already in process as part of:
https://bugs.launchpad.net/ubuntu/+source/linux-firmware/+bug/1981922

Mario Limonciello (1):
  UBUNTU: SAUCE: drm/amd: Fix DP Tunneling with Thunderbolt monitors

Meenakshikumar Somasundaram (1):
  drm/amd/display: Fix for dmub outbox notification enable

Sanjay R Mehta (1):
  UBUNTU: SAUCE: thunderbolt: Add DP out resource when DP tunnel is
    discovered.

Stylon Wang (1):
  drm/amd/display: Fix new dmub notification enabling in DM

 .../gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 24 +++++--
 drivers/gpu/drm/amd/display/dc/core/dc.c      | 66 +++++++++++++++++--
 drivers/gpu/drm/amd/display/dc/dc.h           |  3 +
 .../gpu/drm/amd/display/dc/dce/dmub_outbox.c  | 25 +++----
 .../gpu/drm/amd/display/dc/dce/dmub_outbox.h  |  4 +-
 .../amd/display/dc/dcn10/dcn10_hw_sequencer.c |  4 --
 .../drm/amd/display/dc/dcn20/dcn20_hwseq.c    |  4 ++
 .../drm/amd/display/dc/dcn31/dcn31_hwseq.c    |  2 +-
 drivers/thunderbolt/tb.c                      | 15 +++++
 drivers/thunderbolt/tb.h                      |  1 +
 drivers/thunderbolt/tunnel.c                  |  2 +
 11 files changed, 121 insertions(+), 29 deletions(-)

-- 
2.34.1