obsolete out-of-tree ivsc dkms in favor of in-tree one

[You-Sheng Yang]

[SRU Justification]

BugLink: https://bugs.launchpad.net/bugs/2061747

========== linux-meta, linux-meta-unstable, linux-meta-oem-6.8 ==========

[Impact]

Starting from kernel v6.8, Intel demands the use of in-tree VSC driver
instead of the out-of-tree dkms originated from
https://github.com/intel/ivsc-driver.

[Fix]

The main fixes are in kernel & dkms packages. This adds ivsc-modules to
Provides list of linux-image-generic as other built-in linux-modules-foo
packages do.

[Test Case]

The generated meta package linux-image-generic should then provides
"ivsc-modules".

[Where problems could occur]

Meta package changes only. No real effect but in package dependency.

[Other Info]

While the ivsc-dkms obsoletion only happens for kernel >= 6.8, this will
only be nominated for Unstable/Noble/OEM-6.8.

========== ipu6-drivers, linux, linux-oem-6.8 ==========

[Impact]

Starting from kernel v6.8, Intel demands the use of in-tree VSC driver instead of the out-of-tree dkms originated from https://github.com/intel/ivsc-driver.

[Fix]

The in-tree vsc driver as of v6.8 still needs a few fixes to achieve the same support level to launch Intel IPU6 Camera devices. Commit 1,3, and 4 are to add supported devices and platforms. Commit 2 resolves an issue after resumed.

[Test Case]

This is supposed to work together with the updated dkms, which shall also be built along with the kernel itself as linux-modules-ipu6-<variant>. Install the corresponding kernel/modules packages and test camera functions.

[Where problems could occur]

While this is the first time we switch to in-tree VSC driver, and the out-of-tree driver is not aligned at the time of transition and probably never will, the provided functions and verified stability issues may vary.

[Other Info]

The dkms is created to be compatible of multiple kernel versions, yet the in-tree vsc driver transitioning should only happen for kernel >= v6.8. That is, oem-6.8, noble and linux-unstable will be nominated.

========== original bug description ==========

Starting from kernel v6.8 (yet from the code diff it's v6.6), Intel demands the use of in-tree IVSC drivers instead of out-of-tree dkms from https://github.com/intel/ivsc-driver.

[Timo Aaltonen (tjaalton)]

https://kernel.ubuntu.com/gitea/kernel/kernel-versions/pulls/290

[You-Sheng Yang (vicamo)]

SRU:
* https://lists.ubuntu.com/archives/kernel-team/2024-April/150378.html (linux/noble, linux-unstable/noble)
* https://kernel.ubuntu.com/gitea/kernel/noble-linux-oem/pulls/7 (linux-oem-6.8/noble)

[You-Sheng Yang (vicamo)]

And for kernel-versions: https://kernel.ubuntu.com/gitea/kernel/kernel-versions/pulls/290

[You-Sheng Yang (vicamo)]

No further update to ivsc-driver shall be necessary as we're removing it.

[You-Sheng Yang (vicamo)]

PPA: https://launchpad.net/~vicamo/+archive/ubuntu/ppa-2061747

Proposed DKMS update for ipu6-drivers/noble based on new upstream release Release_20240409.

Need sponsor.

[Ubuntu Foundations Team Bug Bot (crichton)]

The attachment "ipu6-drivers_0~git202404110253.97c94720-0ubuntu1~ppa.1.debdiff" seems to be a debdiff. The ubuntu-sponsors team has been subscribed to the bug report so that they can review and hopefully sponsor the debdiff. If the attachment isn't a patch, please remove the "patch" flag from the attachment, remove the "patch" tag, and if you are member of the ~ubuntu-sponsors, unsubscribe the team.

[This is an automated message performed by a Launchpad user owned by ~brian-murray, for any issue please contact him.]

[Steve Langasek (vorlon)]

Hello You-Sheng, or anyone else affected,

Accepted ipu6-drivers into noble-proposed. The package will build now and be available at https://launchpad.net/ubuntu/+source/ipu6-drivers/0~git202404110253.97c94720-0ubuntu1 in a few hours, and then in the -proposed repository.

Please help us by testing this new package. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation on how to enable and use -proposed. Your feedback will aid us getting this update out to other Ubuntu users.

If this package fixes the bug for you, please add a comment to this bug, mentioning the version of the package you tested, what testing has been performed on the package and change the tag from verification-needed-noble to verification-done-noble. If it does not fix the bug for you, please add a comment stating that, and change the tag to verification-failed-noble. In either case, without details of your testing we will not be able to proceed.

Further information regarding the verification process can be found at https://wiki.ubuntu.com/QATeam/PerformingSRUVerification . Thank you in advance for helping!

N.B. The updated package will be released to -updates after the bug(s) fixed by this package have been verified and the package has been in -proposed for a minimum of 7 days.

[Martin D. Weinberg (martin-weinberg-5)]

I did the followings steps:
- Added the noble-proposed repo
- Installed the driver(s) using: `sudo apt install intel-ipu6-dkms/noble-proposed`
- Confirmed that the correct package was installed:
```
$ apt policy intel-ipu6-dkms
intel-ipu6-dkms:
  Installed: 0~git202404110253.97c94720-0ubuntu1
  Candidate: 0~git202404110253.97c94720-0ubuntu1
  Version table:
 *** 0~git202404110253.97c94720-0ubuntu1 100
        100 http://us.archive.ubuntu.com/ubuntu noble-proposed/universe amd64 Packages
        100 /var/lib/dpkg/status
     0~git202311240921.07f0612e-0ubuntu2 500
        500 http://us.archive.ubuntu.com/ubuntu noble/universe amd64 Packages
```
- Rebooted

I see no evidence that a ipu6 device was detected. E.g. nothing in kern.log from intel-ipu6 after the new driver package installed. Perhaps I've missed something important here? LMK if there's another test I can perform.

[Anthony Wong (anthonywong)]

This fix also requires kernel patches in this series: https://lists.ubuntu.com/archives/kernel-team/2024-April/150378.html

[Martin D. Weinberg (martin-weinberg-5)]

Thanks, I tried the NVidia kernel 6.8.0-1005.5+1 from noble-proposed; still no detection. Could be that this predates that patch series? Not sure.

[You-Sheng Yang (vicamo)]

SRU:
* https://lists.ubuntu.com/archives/kernel-team/2024-April/150635.html (linux-meta: noble, unstable)
* https://lists.ubuntu.com/archives/kernel-team/2024-April/150637.html (linux-meta-oem-6.8)

[You-Sheng Yang (vicamo)]

Please don't fail the verification for things you're not sure.

[Martin D. Weinberg (martin-weinberg-5)]

Sorry, just trying to help by providing reports and trying to follow the rules. I posted the results of my test because the post above asked for testers. Obviously, I'm not helping. I'll refrain from posting moving forward. I'm happy to test but I'll wait for someone to ask.

[Launchpad Janitor (janitor)]

This bug was fixed in the package ipu6-drivers - 0~git202404110253.97c94720-0ubuntu1

---------------
ipu6-drivers (0~git202404110253.97c94720-0ubuntu1) noble; urgency=medium

  [ You-Sheng Yang ]
  * New upstream Release_20240409 release (LP: #2061747)
    - drop upstreamed "backport: replace strlcpy with strscpy" patch
    - debian: refresh patches
    - UBUNTU: SAUCE: firmware: fallback to old firmware path
    - UBUNTU: SAUCE: don't fail probing at hwcfg checks

 -- You-Sheng Yang <email address hidden> Thu, 11 Apr 2024 18:38:46 +0800