Re: [PATCH] ACPI: GED: Support GpioInt event resources

[Rahul Pon]

On Thu, Oct 1, 2026 at 1:52 AM Linus Walleij <linusw@xxxxxxxxxx> wrote:
> I don't understand the patch at all, but I understand that Andy or Mika must
> review it otherwise it's not going anywhere, so looping them in.

Thanks, Linus.

Andy, Mika: some context that should have been in the commit message.

ACPI 6.6 section 5.6.9.2 says a GED _CRS contains only Interrupt
resource descriptors, so this firmware is outside the spec. It is still
the only source of lid events here: LIGE's _CRS is a single GpioInt on
the GPIO controller (pin 960), and the controller's _AEI lists one
other, unrelated pin. ECGE is the same, with pin 768. On Windows, the
in-box ACPI device driver (acpidev.inf) binds both GED devices, and the
lid works there.

For _EVT, section 5.6.9.3 passes the GSI number, which a GpioInt does
not have. The patch passes the pin number from the GpioInt descriptor,
as section 5.6.5.3 does for _EVT under _AEI. Both _EVT methods on this
laptop ignore Arg0.

If the approach is acceptable, v2 will state the spec deviation in the
commit message.

Thanks,
Rahul