linux-kernel - RE: [PATCH v3] gpio: mpc8xxx: Add ACPI support

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Message-ID: <AM6PR04MB5413C279D47BEE68B21E7BBCF1659@AM6PR04MB5413.eurprd04.prod.outlook.com>
Date:   Mon, 22 Mar 2021 02:05:10 +0000
From:   Ran Wang <ran.wang_1@....com>
To:     Andy Shevchenko <andy.shevchenko@...il.com>
CC:     Linus Walleij <linus.walleij@...aro.org>,
        Bartosz Golaszewski <bgolaszewski@...libre.com>,
        Michael Walle <michael@...le.cc>,
        "open list:GPIO SUBSYSTEM" <linux-gpio@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: RE: [PATCH v3] gpio: mpc8xxx: Add ACPI support

Hi Andy,

On Friday, March 19, 2021 6:32 PM, Andy Shevchenko wrote:
> 
> On Fri, Mar 19, 2021 at 10:10 AM Ran Wang <ran.wang_1@....com> wrote:
> >
> > Current implementation only supports DT, now add ACPI support.
> 
> Thanks for an update, my comments below.
> 
> ...
> 
> > +#include <linux/acpi.h>
> 
> Missed
> property.h
> mod_devicetable.h.

Got it.
 
> ...
> 
> > -       mpc8xxx_gc->regs = of_iomap(np, 0);
> > +       mpc8xxx_gc->regs = devm_platform_ioremap_resource(pdev, 0);
> 
> >         if (!mpc8xxx_gc->regs)
> 
> This is wrong now.

Yes, will correct this in next version

> >                 return -ENOMEM;
> 
> This too.

Got it.
 
> ...
> 
> > +       fwnode = dev_fwnode(&pdev->dev);
> >         if (of_device_is_compatible(np, "fsl,qoriq-gpio") ||
> >             of_device_is_compatible(np, "fsl,ls1028a-gpio") ||
> > -           of_device_is_compatible(np, "fsl,ls1088a-gpio"))
> > +           of_device_is_compatible(np, "fsl,ls1088a-gpio") ||
> 
> > +           !(IS_ERR_OR_NULL(fwnode) || is_of_node(fwnode)))
> 
> Since you left acpi.h inclusion, you may switch this to
> 
> is_acpi_node(fwnode)
> 
> or drop fwnode and use
> 
> has_acpi_companion(&pdev->dev)

OK, will use is_acpi_node(fwnode) instead (since fwnode is referred in following irq_domain_create_linear()

Thanks for your patient educate :)

Regards,
Ran