RE: How to use an ACPI declared GPIO in a userspace ...

Flavio Suligoi
2020-10-02T13:29:13Z

HI Andy,

> > So, what about adding the following
> >
> >
> > (Replace '...' with meaningful line names or drop for now, but in any
> > case you need to provide as much names as lines of such GPIO
> > controller)
>
> I have checked the code, so it allows you to define from 0 up to all
> lines, but no gaps.
> Thus, I have dropped '...' line in above excerpt, added the compiled
> AML to initramfs (initrd method) and voila!
>
> % gpioinfo gpiochip1
> gpiochip1 - 77 lines:
> line 0: "Line0" unused input active-high
> line 1: "Line1" unused input active-high
> line 2: "Line2" unused input active-high
> line 3: unnamed unused input active-high
>
>
> % gpiofind Line2
> gpiochip1 2
>
> Of course you may convert _DSD to be a Method and fill the line names
> dynamically with help of ASL.

Thanks for your help, I try now!

>
> --
> With Best Regards,
> Andy Shevchenko

Best regards,

Flavio