Fix power consumption while using HW accelerated video decode on AMD platforms

[You-Sheng Yang]

[SRU Justification]

[Impact]

Power consumption measurements are worse than Windows while using HW accelerated video decoding.

[Fix]

Two commits from upstream v6.11-rc1 to add a unified queue to VCN for more power saving.

[Test Case]

This involves attaching probes on mainboard and can only be performed by AMD/ODM.

[Where problems could occur]

No.

[Other Info]

To apply to all kernels >= 6.8. Orauclar/Noble, OEM-6.8, OEM-6.11 are nominated for fix.

===== original bug report =====

Affected platforms are AMD Phoenix, Phoenix2, Kracken, Strix and Strix-Halo.

Patches being upstreamed:
* https://<email address hidden>/
* https://<email address hidden>/

Patches backported to 6.8/6.10:
* https://git.kernel.org/superm1/h/superm1/vcn-dpg-6.8
* https://git.kernel.org/superm1/h/superm1/vcn-dpg-6.10

[You-Sheng Yang (vicamo)]

SRU:
* https://lists.ubuntu.com/archives/kernel-team/2024-August/152623.html (unstable, oracular)
* https://lists.ubuntu.com/archives/kernel-team/2024-August/152626.html (noble)
* https://kernel.ubuntu.com/gitea/kernel/noble-linux-oem/pulls/20 (oem-6.10)
* https://kernel.ubuntu.com/gitea/kernel/noble-linux-oem/pulls/21 (oem-6.8)

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

This bug is awaiting verification that the linux-oem-6.8/6.8.0-1011.11 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-noble-linux-oem-6.8' to 'verification-done-noble-linux-oem-6.8'. If the problem still exists, change the tag 'verification-needed-noble-linux-oem-6.8' to 'verification-failed-noble-linux-oem-6.8'.

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)]

Verified linux-oem-6.8=6.8.0-1011.11 from https://launchpad.net/~canonical-kernel-team/+archive/ubuntu/proposed2

[Launchpad Janitor (janitor)]

This bug was fixed in the package linux-oem-6.8 - 6.8.0-1011.11

---------------
linux-oem-6.8 (6.8.0-1011.11) noble; urgency=medium

  * noble/linux-oem-6.8: 6.8.0-1011.11 -proposed tracker (LP: #2075598)

  * Packaging resync (LP: #1786013)
    - [Packaging] debian.oem/dkms-versions -- update from kernel-versions
      (main/s2024.07.08)

  * Fix power consumption while using HW accelerated video decode on AMD
    platforms (LP: #2073282)
    - drm/amdgpu/vcn: identify unified queue in sw init
    - drm/amdgpu/vcn: not pause dpg for unified queue

  * Kubuntu 24.04 freezes after plugging in ethernet cable (LP: #2073358)
    - e1000e: move force SMBUS near the end of enable_ulp function
    - e1000e: fix force smbus during suspend flow

  [ Ubuntu: 6.8.0-41.41 ]

  * noble/linux: 6.8.0-41.41 -proposed tracker (LP: #2075611)
  * Packaging resync (LP: #1786013)
    - [Packaging] debian.master/dkms-versions -- update from kernel-versions
      (main/s2024.07.08)
  * md: nvme over tcp with a striped underlying md raid device leads to data
    corruption (LP: #2075110)
    - md/md-bitmap: fix writing non bitmap pages
  * Linux 6.8 fails to boot on ARM64 if any param is more than 146 chars
    (LP: #2069534)
    - SAUCE: arm64: v6.8: cmdline param >= 146 chars kills kernel
  * CVE-2024-39484
    - mmc: davinci: Don't strip remove function when driver is builtin
  * CVE-2024-39292
    - um: Add winch to winch_handlers before registering winch IRQ

 -- Kuan-Ying Lee <email address hidden> Fri, 09 Aug 2024 13:08:30 +0800