linux-kernel - Re: [RFT PATCH] mtd: rawnand: ingenic: move the GPIO quirk to gpiolib-of.c

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Date:   Tue, 26 Sep 2023 11:26:21 +0200
From:   Paul Cercueil <paul@...pouillou.net>
To:     Miquel Raynal <miquel.raynal@...tlin.com>,
        Bartosz Golaszewski <brgl@...ev.pl>
Cc:     Linus Walleij <linus.walleij@...aro.org>,
        Andy Shevchenko <andy@...nel.org>,
        Harvey Hunt <harveyhuntnexus@...il.com>,
        Richard Weinberger <richard@....at>,
        Vignesh Raghavendra <vigneshr@...com>,
        linux-gpio@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-mtd@...ts.infradead.org, linux-mips@...r.kernel.org,
        Bartosz Golaszewski <bartosz.golaszewski@...aro.org>
Subject: Re: [RFT PATCH] mtd: rawnand: ingenic: move the GPIO quirk to
 gpiolib-of.c

Hi,

Le mardi 26 septembre 2023 à 11:16 +0200, Miquel Raynal a écrit :
> Hi Bartosz,
> 
> brgl@...ev.pl wrote on Tue, 26 Sep 2023 11:06:23 +0200:
> 
> > From: Bartosz Golaszewski <bartosz.golaszewski@...aro.org>
> > 
> > We have a special place for OF polarity quirks in gpiolib-of.c.
> > Let's
> > move this over there so that it doesn't pollute the driver.
> > 
> > Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@...aro.org>
> > ---
> > This is an alternative to the previous patch that instead of
> > replacing
> > one active-low setter with another, just moves the quirk over to
> > gpiolib-of.c
> > 
> >  drivers/gpio/gpiolib-of.c                       |  9 +++++++++
> >  drivers/mtd/nand/raw/ingenic/ingenic_nand_drv.c | 12 ------------
> >  2 files changed, 9 insertions(+), 12 deletions(-)
> > 
> > diff --git a/drivers/gpio/gpiolib-of.c b/drivers/gpio/gpiolib-of.c
> > index 5515f32cf19b..58c0bbe9d569 100644
> > --- a/drivers/gpio/gpiolib-of.c
> > +++ b/drivers/gpio/gpiolib-of.c
> > @@ -192,6 +192,15 @@ static void of_gpio_try_fixup_polarity(const
> > struct device_node *np,
> >                  */
> >                 { "himax,hx8357",       "gpios-reset",  false },
> >                 { "himax,hx8369",       "gpios-reset",  false },
> > +               /*
> > +                * The rb-gpios semantics was undocumented and
> > qi,lb60 (along with
> > +                * the ingenic driver) got it wrong. The active
> > state encodes the
> > +                * NAND ready state, which is high level. Since
> > there's no signal
> > +                * inverter on this board, it should be active-
> > high. Let's fix that
> > +                * here for older DTs so we can re-use the generic
> > nand_gpio_waitrdy()
> > +                * helper, and be consistent with what other
> > drivers do.
> > +                */
> > +               { "qi,lb60",            "rb-gpios",     true },
> 
> I didn't know about such a list, interesting. Better be aware when
> debugging :)
> 
> IIRC Linus was fine, so if Paul also agrees I guess this is better
> taking through the gpio tree? I don't have any ingenic related
> changes
> queued right now so feel free to take it.

Works for me.

> 
> Acked-by: Miquel Raynal <miquel.raynal@...tlin.com>

Acked-by: Paul Cercueil <paul@...pouillou.net>

> Thanks,
> Miquèl

Cheers,
-Paul