Re: small brainstorm for the problem I have

[Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>]

On Wed, Feb 12, 2025 at 11:55:31PM +0100, Linus Walleij wrote:
> On Mon, Feb 10, 2025 at 10:31 AM Andy Shevchenko
> <andriy.shevchenko@xxxxxxxxxxxxxxx> wrote:
> 
> > 2) The firmware for the device uses already some names for the GPIO lines that
> > not compatible with SPI GPIO schema.
> 
> I guess you mean the node names
> like "cs", "mosi", "miso", "sck"?
> 
> > I was thinking about the following:
> > 1) Use GPIO aggregator to fake the chip that will provide necessary names.
> >
> > 2) Hack the GPIO library to add a quirk for this specific device to translate
> > the line names.
> 
> I would honestly do (2) if it was device tree, because we already
> have nicely centralized quirks for it, but for ACPI I don't know :/
> Aggregator feels a bit like overkill for this.

Interestingly, I feel the same. The aggregator approach is something like +100+
LoCs for a little benefit + runtime overhead.

But this sounds like we would need some kind of translation quirks done in gpiolib-acpi.c.
In the similar way as OF does.

-- 
With Best Regards,
Andy Shevchenko