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

[bugzilla-daemon@bugzilla.kernel.org]

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

--- Comment #6 from Johannes P (johannes.penssel@gmail.com) ---
(In reply to Barnabás Pőcze from comment #5)
> The DSDT contains the following:
> 
> Method (DYTC, 1, Serialized)
> {
>     Local0 = Arg0
>     DYTP = Local0
>     Local1 = Zero
>     Switch (ToInteger ((Local0 & 0x01FF)))
>     {
>         Case (Zero)
>         {
>             Local1 = 0x0100
>             Local1 |= 0x40000000
>             Local1 |= Zero
>             Local1 |= One
>         }
> ...
> 
> 
> and you can also see that the DYTC method returns "Local1", which is set to
> 0x40000101 (I think - but the important part is the 0x40...). And you can
> also determine from the driver that the version is in bits 28-31 of the
> return value of the DYTC method when called with 0 as its first argument.
> And those bits are exactly 4.

Finally, I understand! Thank you very much!

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