Re: [PATCH v5 06/11] gpio: regmap: Allow to allocate regmap-irq device

Michael Walle
2025-03-28T09:23:18Z

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On Wed Mar 26, 2025 at 12:00 PM CET, Mathieu Dubois-Briand wrote:
> On Tue Mar 25, 2025 at 8:50 AM CET, Michael Walle wrote:
> > > > > +#ifdef CONFIG_GPIOLIB_IRQCHIP
> > > >
> > > > Why do we need this ifdef?
> > > >
> > >
> > > Hum yes, on second thought we probably need to depend on
> > > CONFIG_REGMAP_IRQ here.
> >
> > But then, you'd also require the regmap_irq support for chips that
> > don't support IRQs at all. devm_regmap_add_irq_fwnode() seems to be
> > missing a stub version.
> >
>
> Sorry, maybe my previous message was not clear, when I said "depend",
> what I meant is having an "#ifdef CONFIG_REGMAP_IRQ" here in place of
> "#ifdef CONFIG_GPIOLIB_IRQCHIP"
>
> If CONFIG_REGMAP_IRQ is enabled, drivers/base/regmap/regmap-irq.c is
> built, so we do have both devm_regmap_add_irq_chip_fwnode() and
> regmap_irq_get_domain(). So this code block should compile and link
> correctly.

Yes.

> I did some build tests with and without CONFIG_GPIOLIB_IRQCHIP and I
> believe this is fine.
>
> Or am I missing something?

I'd like to avoid the ifdef macros if possible. Thus you'd need
stubs for devm_regmap_add_irq_chip_fwnode() and
regmap_irq_get_domain() if CONFIG_REGMAP_IRQ is not defined.

Not sure if broonie agrees though (?).

-michael

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