[Bug 213297] ideapad-laptop: DYTC interface not found, several functionalities missing

[bugzilla-daemon@kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=213297

--- Comment #9 from Luis O (lortegap@protonmail.com) ---
1. indeed, that kernel module will make testing much easier for other people
2. please write the patch, and I'll test it. I'm on fedora 36 if that helps.

thank you!

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-------- Original Message --------
On Jun 22, 2022, 3:51 AM, wrote:

> https://bugzilla.kernel.org/show_bug.cgi?id=213297 Hans de Goede
> (jwrdegoede@fedoraproject.org) changed: What |Removed |Added
> ----------------------------------------------------------------------------
> CC| |jwrdegoede@fedoraproject.or | |g --- Comment #8 from Hans de Goede
> (jwrdegoede@fedoraproject.org) --- (In reply to Luis O from comment #7) > I
> came across this issue, and I checked the ideapad-acpi source code and for >
> some reason it now allows DYTC version 4, but only for 1 laptop model. >
> https://github.com/torvalds/linux/blob/ >
> ca1fdab7fd27eb069df1384b2850dcd0c2bebe8d/drivers/platform/x86/ideapad-laptop.
> > c#L871 Right, this is done because we don't know if DYTC version 4 will
> work on all models. The ideapad platform-profile code was based on the
> ThinkPad code contibuted by Lenovo and that was for version 5. So for now we
> only allow using v4 on tested devices. What would be good is to add a module
> parameter to allow using the platform-profile code on v4 devices for easier
> testing. If you can submit a patch to do that that would be great. Or if
> you're not into writing kernel patches, I can write such a patch and then you
> can test it on your model. Note this will require you to build your own
> kernel from source. And if the testing of the patch also shows that your
> model works correctly, then your model can also be added to the list of
> devices on which using v4 DYTC support is allowed (and eventually if that
> list becomes quite big we may choose to enable this by default). -- You may
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