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References: <20231213110009.v1.1.Ifd0903f1c351e84376d71dbdadbd43931197f5ea@changeid>
 <20231213110009.v1.5.Ife9ebad2bbfbab3a05e90040f344d750aa0aac7e@changeid> <ZXoLbt7jNrmC0VbQ@smile.fi.intel.com>
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From: Mark Hasemeyer <markhas@chromium.org>
Date: Mon, 18 Dec 2023 13:23:35 -0700
Message-ID: <CANg-bXDUxMvm2tmHZVz4Mh=o3VMmO2ZTT2547RZEcwDkn2FUeQ@mail.gmail.com>
Subject: Re: [PATCH v1 5/6] platform: Modify platform_get_irq_optional() to
 use resource
To: Andy Shevchenko <andriy.shevchenko@intel.com>
Cc: LKML <linux-kernel@vger.kernel.org>, Raul Rangel <rrangel@chromium.org>, 
	David Gow <davidgow@google.com>, Greg Kroah-Hartman <gregkh@linuxfoundation.org>, 
	Mark Brown <broonie@kernel.org>, "Rafael J. Wysocki" <rafael@kernel.org>, Takashi Iwai <tiwai@suse.de>, 
	=?UTF-8?Q?Uwe_Kleine=2DK=C3=B6nig?= <u.kleine-koenig@pengutronix.de>
Content-Type: text/plain; charset="UTF-8"

> > +             *r = (struct resource)DEFINE_RES_IRQ(ret);
>
> Why is the annotation needed?

It's not needed anymore. I'll remove it.

> > -     struct resource *r;
> > +     struct resource *platform_res;
> >
> >       if (IS_ENABLED(CONFIG_OF_IRQ) && dev->dev.of_node) {
> > -             ret = of_irq_get(dev->dev.of_node, num);
> > +             ret = of_irq_to_resource(dev->dev.of_node, num, r);
> >               if (ret > 0 || ret == -EPROBE_DEFER)
> >                       goto out;
> >       }
>
>
> > +     if (has_acpi_companion(&dev->dev)) {
> > +             ret = acpi_irq_get(ACPI_HANDLE(&dev->dev), num, r);
> > +             if (!ret || ret == -EPROBE_DEFER) {
> > +                     ret = ret ?: r->start;
> > +                     goto out;
> > +             }
> > +     }
>
> Consider combine the above to use fwnode_irq_get() in the separate prerequisite
> change.

I like the idea. It doesn't look like 'struct fwnode_operations'
provides a way to retrieve information in a 'struct resource' format.
Perhaps this could be followed up on in a separate patch train?

>
> > +                     irqd_set_trigger_type(irqd, r->flags & IORESOURCE_BITS);
>
> NIH resource_type().
>
> > +     }
> >       return ret;

Does NIH mean "not invented here"? resource_type() masks
IORESOURCE_TYPE_BITS, not IORESOURCE_BITS. I'm not quite sure what you
mean here.