[Bug 213579] Clevo NH55HJ (intel tigerlake) touchpad support (GPIO can't be used as IRQ)

[bugzilla-daemon@bugzilla.kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=213579

--- Comment #44 from wse@tuxedocomputers.com ---
Found the offending code bit in the dsdt:

    Scope (_SB.PC00.I2C0)
    {
        Device (TPAD)
        {
            [...]
            Method (_INI, 0, NotSerialized)  // _INI: Initialize
            {
                BADR = SADR /* \_SB_.PC00.I2C0.TPAD.SADR */
                INTA = GNUM (0x0801000C)
            }
            [...]
        }
    }

INTA should evaluate to 0x8C (140), but does evaluate to 0x2c (44).
GNUM is some kind of offset calculation, ignoring the 0x08, taking values from
an array based on the 0x01 and adding it to the 0x000C. You can check it in the
disassembled dsdt. I don't know ofcourse if GNUM is buggy, the array is wrong,
or the 0x0801000C input value is wrong (you can choose an input value that
makes GNUM evaluate to 0x8C).

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