[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 #5 from Barnabás Pőcze (pobrn@protonmail.com) ---
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.

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