Re: [PATCH 2/2] gpio: sch: Add interrupt support

Mika Westerberg
2019-04-24T15:33:28Z

On Wed, Apr 24, 2019 at 04:24:16PM +0200, Jan Kiszka wrote:
> > I'm trying to say that for the sysfs access (well or char dev) you
> > should not need the sch_sci_handler() thing that is in your current
> > patch.
>
> Then I'm still missing the black magic where - in my case - CGTS or RGTS are
> read, evaluated and written back.
>
> And we would still need the gpio-sch driver to handle GGPE, GTNE, GTPE when
> edge events are requested? Is the a reference for /such/ a case? The newer
> Intels must be different then.

I realized the patch does not get an IRQ resource for the device so the
sch_sci_handler() is used to circumvent that. Yeah, if you don't have
IRQ resource available from the device ACPI description then I guess
hooking into ACPI SCI might be sensible thing to do after all...