linux-kernel - Re: [PATCH v2 3/4] pinctrl: s32cc: refactor pin config parsing

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Message-ID: <CAHp75Ve325yfz1P4=vYndUOhV-VkqNCWVEObm1RURbKHgcLKrw@mail.gmail.com>
Date:   Mon, 20 Mar 2023 19:06:53 +0200
From:   Andy Shevchenko <andy.shevchenko@...il.com>
To:     Chester Lin <clin@...e.com>
Cc:     Linus Walleij <linus.walleij@...aro.org>,
        NXP S32 Linux Team <s32@....com>,
        linux-gpio@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        Ghennadi Procopciuc <Ghennadi.Procopciuc@....nxp.com>,
        Andrei Stefanescu <andrei.stefanescu@....com>,
        Radu Pirea <radu-nicolae.pirea@....com>,
        Andreas Färber <afaerber@...e.de>,
        Matthias Brugger <mbrugger@...e.com>
Subject: Re: [PATCH v2 3/4] pinctrl: s32cc: refactor pin config parsing

On Mon, Mar 20, 2023 at 6:39 PM Chester Lin <clin@...e.com> wrote:
>
> Move common codes into smaller inline functions and remove some argument
> handlings that are not actually used by either S32 MSCR register or generic
> config params.

...

>         case PIN_CONFIG_OUTPUT_ENABLE:
> -               if (arg)
> -                       *config |= S32_MSCR_OBE;
> -               else
> -                       *config &= ~S32_MSCR_OBE;
> +               *config |= S32_MSCR_OBE;
>                 *mask |= S32_MSCR_OBE;
>                 break;
>         case PIN_CONFIG_INPUT_ENABLE:
> -               if (arg)
> -                       *config |= S32_MSCR_IBE;
> -               else
> -                       *config &= ~S32_MSCR_IBE;
> +               *config |= S32_MSCR_IBE;
>                 *mask |= S32_MSCR_IBE;
>                 break;

Isn't it a regression here?
Otherwise needs an explicit explanation in the commit message on
what's going on here and why it's not a regression.

...

>         case PIN_CONFIG_BIAS_DISABLE:
> -               *config &= ~(S32_MSCR_PUS | S32_MSCR_PUE);
> -               *mask |= S32_MSCR_PUS | S32_MSCR_PUE;
> +               s32_pin_set_pull(param, mask, config);
>                 break;

This now can be unified with PU and PD cases above.

-- 
With Best Regards,
Andy Shevchenko