linux-kernel - Re: [PATCH v2 10/13] pinctrl: renesas: pinctrl-rzg2l: Add support to set pulling up/down the pins

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Date: Tue, 28 May 2024 21:01:18 +0100
From: "Lad, Prabhakar" <prabhakar.csengg@...il.com>
To: Geert Uytterhoeven <geert@...ux-m68k.org>
Cc: Linus Walleij <linus.walleij@...aro.org>, Rob Herring <robh@...nel.org>, 
	Krzysztof Kozlowski <krzk+dt@...nel.org>, Conor Dooley <conor+dt@...nel.org>, 
	Magnus Damm <magnus.damm@...il.com>, linux-renesas-soc@...r.kernel.org, 
	linux-gpio@...r.kernel.org, devicetree@...r.kernel.org, 
	linux-kernel@...r.kernel.org, Biju Das <biju.das.jz@...renesas.com>, 
	Fabrizio Castro <fabrizio.castro.jz@...esas.com>, 
	Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>
Subject: Re: [PATCH v2 10/13] pinctrl: renesas: pinctrl-rzg2l: Add support to
 set pulling up/down the pins

Hi Geert,

Thank you for the review.

On Wed, May 22, 2024 at 2:14 PM Geert Uytterhoeven <geert@...ux-m68k.org> wrote:
>
> Hi Prabhakar,
>
> On Tue, Apr 23, 2024 at 7:59 PM Prabhakar <prabhakar.csengg@...ilcom> wrote:
> > From: Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>
> >
> > Add support to configure bias-disable, bias-pull-up and bias-pull-down
> > properties of the pin.
> >
> > Two new function pointers get_bias_param() and get_bias_val() are
> > introduced as the values in PUPD register differ when compared to
> > RZ/G2L family and RZ/V2H(P) SoC,
> >
> > Value | RZ/G2L        | RZ/V2H
> > ---------------------------------
> > 00b:  | Bias Disabled | Pull up/down disabled
> > 01b:  | Pull-up       | Pull up/down disabled
> > 10b:  | Pull-down     | Pull-down
> > 11b:  | Prohibited    | Pull-up
> >
> > Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>
> > ---
> > RFC->v2
> > - New patch
>
> Thanks for your patch!
>
> > --- a/drivers/pinctrl/renesas/pinctrl-rzg2l.c
> > +++ b/drivers/pinctrl/renesas/pinctrl-rzg2l.c
> > @@ -1139,6 +1175,25 @@ static int rzg2l_pinctrl_pinconf_get(struct pinctrl_dev *pctldev,
> >                 arg = rzg2l_read_pin_config(pctrl, SR(off), bit, SR_MASK);
> >                 break;
> >
> > +       case PIN_CONFIG_BIAS_DISABLE:
> > +       case PIN_CONFIG_BIAS_PULL_UP:
> > +       case PIN_CONFIG_BIAS_PULL_DOWN: {
> > +               if (!(cfg & PIN_CFG_PUPD))
> > +                       return -EINVAL;
> > +
> > +               ret = pctrl->data->get_bias_param(rzg2l_read_pin_config(pctrl,
> > +                                                                       PUPD(off),
> > +                                                                       bit, PUPD_MASK));
>
> This is rather long, so please split it in two parts, like is done in
> other cases in this function:
>
>     arg = rzg2l_read_pin_config(pctrl, PUPD(off), bit, PUPD_MASK);
>     ret = pctrl->data->get_bias_param(arg);
>
Agreed, I'll update it as per your suggestion.

Cheers,
Prabhakar