linux-kernel - Re: [PATCH 18/36] pinctrl: starfive: use new pinctrl GPIO helpers

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Date:   Wed, 4 Oct 2023 11:39:00 +0200
From:   Bartosz Golaszewski <brgl@...ev.pl>
To:     Emil Renner Berthing <emil.renner.berthing@...onical.com>
Cc:     Linus Walleij <linus.walleij@...aro.org>,
        Andy Shevchenko <andy@...nel.org>, linux-gpio@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        Bartosz Golaszewski <bartosz.golaszewski@...aro.org>,
        Emil Renner Berthing <kernel@...il.dk>,
        Jianlong Huang <jianlong.huang@...rfivetech.com>,
        Hal Feng <hal.feng@...rfivetech.com>
Subject: Re: [PATCH 18/36] pinctrl: starfive: use new pinctrl GPIO helpers

On Wed, Oct 4, 2023 at 11:37 AM Emil Renner Berthing
<emil.renner.berthing@...onical.com> wrote:
>
> Bartosz Golaszewski wrote:
> > From: Bartosz Golaszewski <bartosz.golaszewski@...aro.org>
> >
> > Replace the pinctrl helpers taking the global GPIO number as argument
> > with the improved variants that instead take a pointer to the GPIO chip
> > and the controller-relative offset.
> >
> > Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@...aro.org>
> > ---
> >  drivers/pinctrl/starfive/pinctrl-starfive-jh7100.c | 4 ++--
> >  drivers/pinctrl/starfive/pinctrl-starfive-jh7110.c | 4 ++--
> >  2 files changed, 4 insertions(+), 4 deletions(-)
> >
> > diff --git a/drivers/pinctrl/starfive/pinctrl-starfive-jh7100.c b/drivers/pinctrl/starfive/pinctrl-starfive-jh7100.c
> > index 530fe340a9a1..22a2db8fa315 100644
> > --- a/drivers/pinctrl/starfive/pinctrl-starfive-jh7100.c
> > +++ b/drivers/pinctrl/starfive/pinctrl-starfive-jh7100.c
> > @@ -918,12 +918,12 @@ static struct pinctrl_desc starfive_desc = {
> >
> >  static int starfive_gpio_request(struct gpio_chip *gc, unsigned int gpio)
> >  {
> > -     return pinctrl_gpio_request(gc->base + gpio);
> > +     return pinctrl_gpio_request_new(gc, gpio);
> >  }
> >
> >  static void starfive_gpio_free(struct gpio_chip *gc, unsigned int gpio)
> >  {
> > -     pinctrl_gpio_free(gc->base + gpio);
> > +     pinctrl_gpio_free_new(gc, gpio);
>
> Hi Bartosz,
>
> Thank you for the patch. These new pinctrl_gpio_*_new() functions now seem to
> have the same signature as the starfive_gpio_*() functions. Is there a reason
> they can't be used as callbacks directly so we could just delete the
> starfive_gpio_*() wrapppers?

Ha! Make sense and it'll probably apply to more users.

>
> Also it'd be great to be to be CC'd on at least the first generic patches where
> the new functions are introduced to have some context without having to look it
> up on lore.
>

I wanted to reduce noise for maintainers but ended up introducing
confusion. I will probably just send the v2 to everyone so proper
context.

Bart

> /Emil
>
> >  }
> >
> >  static int starfive_gpio_get_direction(struct gpio_chip *gc, unsigned int gpio)
> > diff --git a/drivers/pinctrl/starfive/pinctrl-starfive-jh7110.c b/drivers/pinctrl/starfive/pinctrl-starfive-jh7110.c
> > index 640f827a9b2c..5557ef3fbeb2 100644
> > --- a/drivers/pinctrl/starfive/pinctrl-starfive-jh7110.c
> > +++ b/drivers/pinctrl/starfive/pinctrl-starfive-jh7110.c
> > @@ -547,12 +547,12 @@ static const struct pinconf_ops jh7110_pinconf_ops = {
> >
> >  static int jh7110_gpio_request(struct gpio_chip *gc, unsigned int gpio)
> >  {
> > -     return pinctrl_gpio_request(gc->base + gpio);
> > +     return pinctrl_gpio_request_new(gc, gpio);
> >  }
> >
> >  static void jh7110_gpio_free(struct gpio_chip *gc, unsigned int gpio)
> >  {
> > -     pinctrl_gpio_free(gc->base + gpio);
> > +     pinctrl_gpio_free_new(gc, gpio);
> >  }
> >
> >  static int jh7110_gpio_get_direction(struct gpio_chip *gc,
> > --
> > 2.39.2