Bug 2360429

Created attachment 2085251 [details]
i2c-devices.txt

Created attachment 2085252 [details]
kernel.txt

Created attachment 2085253 [details]
lsusb.txt

David, thank you for filing a bug for this.

Looking at your lsusb output, your Latitude 9440 has a Lattice USBIO expanders, this requires these out of tree drivers:

https://github.com/intel/usbio-drivers

I've asked Intel to submit these drivers upstream, but there is no progress on this so far.

Note you may also need a not yet merged sensor drivers (given that you have the USBIO expander I think it might actually be an ov02e10 rather then an ov02c10 like on the Latitude 7440).

If you build + insmod the linked drivers and then do a new "ls -l /sys/bus/i2c/devices", then your sensor will hopefully show up there and I can tell you which one it is. If it is one of the ov02c10 or ov02e10 both of those have been submitted upstream (by the community not by Intel) and will hopefully get merged soon.

Additional data:

[ 1667.540632] usbio-bridge 3-8:1.0: bank:0 map:0x0000001f
[ 1667.540638] usbio-bridge 3-8:1.0: bank:1 map:0x0000001f
[ 1667.540639] usbio-bridge 3-8:1.0: bank:2 map:0x0000001f
[ 1667.540639] usbio-bridge 3-8:1.0: bank:3 map:0x00000001
[ 1667.541507] usbio-bridge 3-8:1.0: USB Bridge device init success
[ 1667.541525] usbcore: registered new interface driver usbio-bridge
[ 1667.544501] usbio-i2c usbio-i2c.49.auto: hid INTC10D2 uid VIC0 new uid1

lrwxrwxrwx 1 root root 0 Apr 17 22:30 i2c-17 -> ../../../devices/pci0000:00/0000:00:14.0/usb3/3-8/3-8:1.0/usbio-i2c.48.auto/i2c-17/
lrwxrwxrwx 1 root root 0 Apr 17 22:30 i2c-18 -> ../../../devices/pci0000:00/0000:00:14.0/usb3/3-8/3-8:1.0/usbio-i2c.49.auto/i2c-18/

I see you've got the out of tree usbio drivers build and loaded, good. Now there should also be a new i2c-OVTIxxxx:0x or i2c-HIMXxxxx:0x or something similar under /sys/bus/i2c/devices .

Please make sure that the gpio-usbio kernel module is also loaded and then collect a new full set of logs as before and we'll see from there.

Yeah, usbio is a mess, won't autoload fully. I found your PR [1], I guess I'll apply [2] too just for sure.

[1] https://github.com/intel/usbio-drivers/pull/33
[2] https://github.com/intel/usbio-drivers/pull/34

So far, I'm basing on 6.13, but if there will be more obstacles, I'll go forward to 6.14 or 6.15

Created attachment 2085724 [details]
i2c-devices.txt

kernel 6.15-rc2 + usbio patched into the kernel + ov patches

kernel config from distro + enabled patched stuff;

relevant dmesg part (will upload big one in a minute w/ debugging):
...
[    9.036898] intel_pmc_core INT33A1:00: Assuming a default substate order for this platform
[    9.037002] intel_pmc_core INT33A1:00:  initialized
[    9.062241] intel-ipu6 0000:00:05.0: CSE authenticate_run done
[    9.062248] intel-ipu6 0000:00:05.0: IPU6-v4[7d19] hardware version 6
[    9.066658] ov02e10 i2c-OVTI02E1:00: supply dovdd not found, using dummy regulator
[    9.068188] ov02e10 i2c-OVTI02E1:00: supply avdd not found, using dummy regulator
[    9.068238] ov02e10 i2c-OVTI02E1:00: supply dvdd not found, using dummy regulator
[    9.077537] ov02e10 i2c-OVTI02E1:00: chip id mismatch: 45025610!=0
[    9.077568] ov02e10 i2c-OVTI02E1:00: failed to find sensor: -6
...

Current git tree: https://gitlab.com/dhxx/linux/-/commits/l9440-webcam
 - 6.15-rc2
 - usb-io dropped in + Kconfig/Makefile changes
 - https://github.com/intel/usbio-drivers/pull/33
 - https://github.com/intel/usbio-drivers/pull/34
 - ov02c10 [v11] https://patches.linaro.org/project/linux-media/patch/20250327164927.30741-1-hdegoede@redhat.com/
 - ov02e10 [v2] https://lore.kernel.org/linux-media/20250325-b4-media-comitters-next-25-03-13-ov02e10-v2-2-4d933ac8cff6@linaro.org/

Created attachment 2085726 [details]
kernel.txt

when I comment out the chip ID check, best I can get is qcam running without any output (not even black screen), and with camera LED on.

(In reply to David Heidelberg from comment #9)
> Current git tree: https://gitlab.com/dhxx/linux/-/commits/l9440-webcam
>  - 6.15-rc2
>  - usb-io dropped in + Kconfig/Makefile changes
>  - https://github.com/intel/usbio-drivers/pull/33
>  - https://github.com/intel/usbio-drivers/pull/34
>  - ov02c10 [v11]
> https://patches.linaro.org/project/linux-media/patch/20250327164927.30741-1-
> hdegoede/
>  - ov02e10 [v2]
> https://lore.kernel.org/linux-media/20250325-b4-media-comitters-next-25-03-
> 13-ov02e10-v2-2-4d933ac8cff6/

Nice, good work. I expect the missing puzzle-piece to be this patch-series:

https://lore.kernel.org/platform-driver-x86/20250417111337.38142-1-hdegoede@redhat.com/T/#t

which is also confirmed by this log message:

Apr 18 16:32:38 computer kernel: int3472-discrete INT3472:0c: GPIO type 0x12 unknown; the sensor may not work

with your patchset applied, the camera works. Thank you Hans! Pushed all changes into the git tree

> - ov02e10 [v2] https://lore.kernel.org/linux-media/20250325-b4-media-comitters-next-25-03-13-ov02e10v2-2-4d933ac8cff6@linaro.org/

Found there is [v4] here: https://patchwork.kernel.org/project/linux-media/cover/20250407-b4-media-comitters-next-25-03-13-ov02e10-v4-0-211e3e6fae90@linaro.org/

Tested, still works, so replaced the old [v2] in the tree.

Good to hear that you've gotten things to work.

Thank you for all the testing and for the Tested-by tags you've posted upstream.