Re: [RFC] gpiolib-acpi: make sure we trigger edge events at least once on boot

[Mika Westerberg <mika.westerberg@xxxxxxxxxxxxxxx>]

On Fri, Jul 06, 2018 at 11:52:51AM +0200, Hans de Goede wrote:
> Hi,
> 
> On 07/06/2018 11:46 AM, Mika Westerberg wrote:
> > On Fri, Jul 06, 2018 at 11:32:29AM +0200, Hans de Goede wrote:
> > > +
> > > +	/*
> > > +	 * Make sure we trigger the initial state of the IRQ when
> > > +	 * using RISING or FALLING.
> > > +	 */
> > > +	if (((irqflags & IRQF_TRIGGER_RISING) && value == 1) ||
> > > +	    ((irqflags & IRQF_TRIGGER_FALLING) && value == 0))
> > > +		handler(-1, event);
> > > +
> > 
> > While I don't have anything against this it makes me wonder how it is
> > handled in Windows side? Any idea?
> 
> I guess Windows does the same, otherwise it should have similar issues,
> but that is just a guess.

I see. Is this the ACPI control method lid device (PNP0C0D)? Maybe we
can read its initial state using _LID method?
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