[Letux-kernel] [PATCHv2 0/6] drm/omap: hdmi: improve hdmi4 CEC, add CEC for hdmi5

[H. Nikolaus Schaller]

Hi all,

> Am 28.08.2024 um 16:14 schrieb Hans Verkuil <hverkuil-cisco at xs4all.nl>:
> 
> On 28/08/2024 15:57, Tomi Valkeinen wrote:
>> Hi,
>> 
>> On 25/08/2024 23:31, H. Nikolaus Schaller wrote:
>>> Hi,
>>> CEC features are useful to e.g. control HDMI monitor standby.
>>> 
>>> But I wonder what happened to this series?
>>> 
>>> I could find some reviewed-by: and acked-by: in [1] but it wasn't merged upstream
>>> for unidentifiable reasons.
>>> 
>>> We apparently had merged this series some years ago into our LetuxOS distro kernel
>>> and now we found it to be broken (NULL dereference) at least for omap5uevm
>>> (and likely Pyra Handheld) after rebasing to v6.11-rc (it was already broken
>>> since v6.9-rc1). Fixes were not difficult, but it would be better if it were
>>> part of upstream.
>> 
>> There was a v3:
>> 
>> 20210428132545.1205162-1-hverkuil-cisco at xs4all.nl

[A clickable link is here: https://lore.kernel.org/linux-media/20210428132545.1205162-1-hverkuil-cisco@xs4all.nl/ ]

Ah, I see. It wasn't sent to linux-omap so I didn't recognise/find it in my mails
or omap-patchwork.


>> I see there was a concern from Laurent in:
>> 
>> YLjMZiX71mcQNQdO at pendragon.ideasonboard.com

Well, he didn't reject it although he had concerns, but I am not experienced with what
he is talking about for a proper solution...

>> 
>> And we need an ack from the bridge maintainers for the drm_bridge parts. But the series is three years old, so I think someone would have to rebase on top of mainline and re-test and re-send first.
> 
> I never really followed up with this. I still have the hardware, it is primarily
> time. And also that for me this is quite low priority since I don't use omap5.
> 
> If someone wants to refresh this series and post it, then I would have no problem
> with it.

A far as I see it just needs a rebase - I guess on linux-next (or drm-misc?) and some
compile fixes I already have implemented for our distro kernel.

So if you agree I could work on it, test on omap4&5 and submit a v4 and hope that you
can jump in and support for the discussion. I would keep you (Hans) as commit author
and just add a signed-off: and tested-by:

But I will also need some time...

BR and thanks,
Nikolaus