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Supporting dumb cameras in trixie

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  Supporting dumb cameras in trixie David Heidelberg <david@ixit.cz> - 2025-05-03 12:30 +0200
    Re: Supporting dumb cameras in trixie Salvatore Bonaccorso <carnil@debian.org> - 2025-05-03 14:00 +0200

#87325 — Supporting dumb cameras in trixie

Hello!

The story begins by me ordering Dell 9440. After very good record of 
Dell XPS series Linux support I thought it'll be a win. Boy I was wrong.

Anyway, solving missing bits has included 4 patches, which can be seen 
here: https://gitlab.com/dhxx/linux/-/commits/l9440-webcam (last 4+9).

  - general fixes (patching existing code): 
https://patchwork.kernel.org/project/linux-media/cover/20250417111337.38142-1-hdegoede@redhat.com/
  - OV02C10 (standalone): 
https://patchwork.kernel.org/project/linux-media/patch/20241118212158.624299-1-heimir.sverrisson@gmail.com/#26127637
  - OV02E10 (standalone) 
https://patchwork.kernel.org/project/linux-media/cover/20250407-b4-media-comitters-next-25-03-13-ov02e10-v4-0-211e3e6fae90@linaro.org/

For my use case, only OV02E10 is needed, but other models needs OV02C10.

And now the ugliest part... USBIO

  - usb-io dropped in + Kconfig/Makefile changes
  - https://github.com/intel/usbio-drivers/pull/33
  - https://github.com/intel/usbio-drivers/pull/34

This could be eventually kept outside as module. Sounds still better to 
create wiki page with note: Install this module and it'll work, instead 
of asking them to patch existing kernel module, add two modules to see 
which one will work and then install USBIO module.

What do you think? If you would be OK with this enablement, I volunteer 
to prepare the patches against 6.12 (so far I did 6.13/14).

David


-- 
David Heidelberg

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#87331

Hi David,

Thanks for reaching out.

On Sat, May 03, 2025 at 11:58:52AM +0200, David Heidelberg wrote:
> Hello!
> 
> The story begins by me ordering Dell 9440. After very good record of Dell
> XPS series Linux support I thought it'll be a win. Boy I was wrong.
> 
> Anyway, solving missing bits has included 4 patches, which can be seen here:
> https://gitlab.com/dhxx/linux/-/commits/l9440-webcam (last 4+9).
> 
>  - general fixes (patching existing code): https://patchwork.kernel.org/project/linux-media/cover/20250417111337.38142-1-hdegoede@redhat.com/
>  - OV02C10 (standalone): https://patchwork.kernel.org/project/linux-media/patch/20241118212158.624299-1-heimir.sverrisson@gmail.com/#26127637
>  - OV02E10 (standalone) https://patchwork.kernel.org/project/linux-media/cover/20250407-b4-media-comitters-next-25-03-13-ov02e10-v4-0-211e3e6fae90@linaro.org/
> 
> For my use case, only OV02E10 is needed, but other models needs OV02C10.
> 
> And now the ugliest part... USBIO
> 
>  - usb-io dropped in + Kconfig/Makefile changes
>  - https://github.com/intel/usbio-drivers/pull/33
>  - https://github.com/intel/usbio-drivers/pull/34
> 
> This could be eventually kept outside as module. Sounds still better to
> create wiki page with note: Install this module and it'll work, instead of
> asking them to patch existing kernel module, add two modules to see which
> one will work and then install USBIO module.
> 
> What do you think? If you would be OK with this enablement, I volunteer to
> prepare the patches against 6.12 (so far I did 6.13/14).

After having a look now at this written down I think we have here a
similar situation as in https://bugs.debian.org/1103877 . While Fedora
might do it, we will not take such patches and carry for a long time
in our releases. So I have two suggestions:

Make sure that, where sensible, all support lands in mainline,
eventually you will then be able to use a backports kernel for this
use case.

Secondly: you migh coordinate/work with Bjørn Mork
<bjorn@gustav.mork.no> to have a common approach for th eparts around
usbio.

Let's see what the other team members comment on it.

Regards,
Salvatore

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