linux-kernel - Re: [PATCH 2/5] mtd: rawnand: ingenic: use gpiod_set_active

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Date:   Wed, 13 Sep 2023 22:23:38 +0200
From:   Miquel Raynal <miquel.raynal@...tlin.com>
To:     Linus Walleij <linus.walleij@...aro.org>
Cc:     Andy Shevchenko <andy.shevchenko@...il.com>,
        Bartosz Golaszewski <brgl@...ev.pl>,
        Andy Shevchenko <andy@...nel.org>,
        Ulf Hansson <ulf.hansson@...aro.org>,
        Paul Cercueil <paul@...pouillou.net>,
        Harvey Hunt <harveyhuntnexus@...il.com>,
        Richard Weinberger <richard@....at>,
        Vignesh Raghavendra <vigneshr@...com>,
        Daniel Scally <djrscally@...il.com>,
        Hans de Goede <hdegoede@...hat.com>,
        Mark Gross <markgross@...nel.org>,
        Heiner Kallweit <hkallweit1@...il.com>,
        linux-gpio@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-mmc@...r.kernel.org, linux-mips@...r.kernel.org,
        linux-mtd@...ts.infradead.org, platform-driver-x86@...r.kernel.org,
        Bartosz Golaszewski <bartosz.golaszewski@...aro.org>
Subject: Re: [PATCH 2/5] mtd: rawnand: ingenic: use gpiod_set_active_high()

Hi Andy,

linus.walleij@...aro.org wrote on Wed, 13 Sep 2023 22:12:40 +0200:

> On Wed, Sep 13, 2023 at 10:05 PM Andy Shevchenko
> <andy.shevchenko@...il.com> wrote:
> > On Wed, Sep 13, 2023 at 2:50 PM Bartosz Golaszewski <brgl@...ev.pl> wrote:  
> > >
> > > From: Bartosz Golaszewski <bartosz.golaszewski@...aro.org>
> > >
> > > Use the new, less cumbersome interface for setting the GPIO as
> > > active-high that doesn't require first checking the current state.  
> >
> > ...
> >  
> > >          * here for older DTs so we can re-use the generic nand_gpio_waitrdy()
> > >          * helper, and be consistent with what other drivers do.
> > >          */
> > > -       if (of_machine_is_compatible("qi,lb60") &&
> > > -           gpiod_is_active_low(nand->busy_gpio))
> > > -               gpiod_toggle_active_low(nand->busy_gpio);
> > > +       if (of_machine_is_compatible("qi,lb60"))
> > > +               gpiod_set_active_high(nand->busy_gpio);  
> >
> > Why not moving this quirk to gpiolib-of.c?  
> 
> That's a better idea here I think, it's clearly a quirk for a
> buggy device tree.

Agreed, it's just for backward compatibility purposes in a single
driver. I believe it should stay here.

Thanks,
Miquèl