[amdgpu] USB4 support for DP tunneling

[Timo Aaltonen]

[Impact]
DP tunneling over USB4 requires additional work in the AMD GPU driver that isn't present in 5.14 or 5.15. The code is included in 5.16 kernel and will need to be backported into 5.14 OEM kernel (and jammy/5.15) to support any programs that need it.

[Fix]
Cherry-pick/backport 30 commits from 5.16 to 5.15. OEM-5.14 needs a few additional ones from 5.15.

[Test case]
WIP

[Where things could go wrong]
WIP

[Ubuntu Kernel Bot (ubuntu-kernel-bot)]

This bug is missing log files that will aid in diagnosing the problem. While running an Ubuntu kernel (not a mainline or third-party kernel) please enter the following command in a terminal window:

apport-collect 1951868

and then change the status of the bug to 'Confirmed'.

If, due to the nature of the issue you have encountered, you are unable to run this command, please add a comment stating that fact and change the bug status to 'Confirmed'.

This change has been made by an automated script, maintained by the Ubuntu Kernel Team.

[You-Sheng Yang (vicamo)]

Firmware is being SRUed in bug 1953008.

[Timo Aaltonen (tjaalton)]

the fw is for DP alt mode, not required for tunneling

[Ubuntu Kernel Bot (ubuntu-kernel-bot)]

This bug is awaiting verification that the linux-oem-5.14/5.14.0-1009.9 kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed-focal' to 'verification-done-focal'. If the problem still exists, change the tag 'verification-needed-focal' to 'verification-failed-focal'.

If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed.

See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you!

[You-Sheng Yang (vicamo)]

I still cannot bring up an external typec monitor using the kernel from focal-proposed version 5.14.0-1009-oem.

[You-Sheng Yang (vicamo)]

Correct. I managed to verify this on same CRB by adding a Dell DA310z docking. DP monitor -> docking -> CRB works on 1009 kernel and not on 1008.

[Launchpad Janitor (janitor)]

This bug was fixed in the package linux-oem-5.14 - 5.14.0-1010.10

---------------
linux-oem-5.14 (5.14.0-1010.10) focal; urgency=medium

  * focal/linux-oem-5.14: 5.14.0-1010.10 -proposed tracker (LP: #1953346)

  * alsa/sdw: add sdw audio machine driver for several ADL machines
    (LP: #1951563)
    - ASoC: Intel: sof_sdw: Add support for SKU 0AF3 product
    - ASoC: Intel: soc-acpi: add SKU 0AF3 SoundWire configuration
    - ASoC: Intel: sof_sdw: Add support for SKU 0B00 and 0B01 products
    - ASoC: Intel: sof_sdw: Add support for SKU 0B11 product
    - ASoC: Intel: sof_sdw: Add support for SKU 0B13 product
    - ASoC: Intel: soc-acpi: add SKU 0B13 SoundWire configuration
    - ASoC: Intel: sof_sdw: Add support for SKU 0B29 product
    - ASoC: Intel: soc-acpi: add SKU 0B29 SoundWire configuration
    - ASoC: Intel: sof_sdw: Add support for SKU 0B12 product
    - ASoC: intel: sof_sdw: return the original error number
    - ASoC: intel: sof_sdw: rename be_index/link_id to link_index
    - ASoC: intel: sof_sdw: Use a fixed DAI link id for AMP
    - ASoC: intel: sof_sdw: move DMIC link id overwrite to create_sdw_dailink
    - ASoC: intel: sof_sdw: remove SOF_RT715_DAI_ID_FIX quirk
    - ASoC: intel: sof_sdw: remove get_next_be_id
    - ASoC: intel: sof_sdw: add link adr order check
    - soundwire: bus: update Slave status in sdw_clear_slave_status

 -- Chia-Lin Kao (AceLan) <email address hidden> Mon, 06 Dec 2021 22:12:32 +0800

[Iris Lin (irislin)]

Hi Canonical Team,

HP has validated DP Tunneling/DP ALT MODE/PCIe Tunneling/USB3 Tunneling are functional in Ubuntu 20.04 kernel 5.14-OEM with the latest 1012 proposed SRU. This proposed kernel 1012 should go into the next official updates repo (target early January).

[Launchpad Janitor (janitor)]

This bug was fixed in the package linux - 5.15.0-17.17

---------------
linux (5.15.0-17.17) jammy; urgency=medium

  * jammy/linux: 5.15.0-17.17 -proposed tracker (LP: #1957809)

 -- Andrea Righi <email address hidden> Thu, 13 Jan 2022 17:11:21 +0100