Enable HDMI-CEC driver in rasberry pi kernel build

[s-knibbs]

Describe the issue you are experiencing

I'm currently unable to use the CEC Scanner addon and/or the hdmi_cec integration despite updating to the latest OS version.

Although the kernel has now been updated to 5.15 which includes the HDMI CEC driver, it seems that this is not currently enabled. See https://github.com/raspberrypi/linux/blob/rpi-5.15.y/drivers/gpu/drm/vc4/Kconfig#L26

What operating system image do you use?

rpi4-64 (Raspberry Pi 4/400 64-bit OS)

What version of Home Assistant Operating System is installed?

8.1

Did you upgrade the Operating System.

Yes

Steps to reproduce the issue

1. Start the CEC Scanner addon
2. The following error is reported in the container logs:

[services.d] starting services
[services.d] done.
[09:47:22] INFO: Starting CEC client scan...
autodetect FAILED

Anything in the Supervisor logs that might be useful for us?

N/A

Anything in the Host logs that might be useful for us?

N/A

System Health information

No response

Additional information

No response

[pvizeli]

It is enabled: https://github.com/raspberrypi/linux/blob/rpi-5.15.y/arch/arm64/configs/bcm2711_defconfig but maybe it need this avoid_warnings=2

[github-actions[bot]]

There hasn't been any activity on this issue recently. To keep our backlog manageable we have to clean old issues, as many of them have already been resolved with the latest updates. Please make sure to update to the latest Home Assistant OS version and check if that solves the issue. Let us know if that works for you by adding a comment 👍 This issue has now been marked as stale and will be closed if no further activity occurs. Thank you for your contributions.

[akhodyko]

I think this is actual issue. CEC Scanner results with same error on RPi 4 64, HA OS 8.5, HA 2022.12.1. How i can get it to work?