linux-kernel - Re: [PATCH] pinctrl: mediatek: Fix fallback call path

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Date:   Mon, 4 Jan 2021 19:16:38 +0800
From:   Sean Wang <sean.wang@...nel.org>
To:     Hsin-Yi Wang <hsinyi@...omium.org>
Cc:     linux-arm Mailing List <linux-arm-kernel@...ts.infradead.org>,
        Linus Walleij <linus.walleij@...aro.org>,
        Matthias Brugger <matthias.bgg@...il.com>,
        Light Hsieh <light.hsieh@...iatek.com>,
        "moderated list:ARM/Mediatek SoC support" 
        <linux-mediatek@...ts.infradead.org>,
        "open list:GPIO SUBSYSTEM" <linux-gpio@...r.kernel.org>,
        lkml <linux-kernel@...r.kernel.org>,
        Enric Balletbo i Serra <enric.balletbo@...labora.com>
Subject: Re: [PATCH] pinctrl: mediatek: Fix fallback call path

On Mon, Dec 28, 2020 at 5:04 PM Hsin-Yi Wang <hsinyi@...omium.org> wrote:
>
> Some SoCs, eg. mt8183, are using a pinconfig operation bias_set_combo.
> The fallback path in mtk_pinconf_adv_pull_set() should also try this
> operation.
>
> Fixes: cafe19db7751 ("pinctrl: mediatek: Backward compatible to previous Mediatek's bias-pull usage")
> Signed-off-by: Hsin-Yi Wang <hsinyi@...omium.org>

Acked-by: Sean Wang <sean.wang@...nel.org>

> ---
>  drivers/pinctrl/mediatek/pinctrl-mtk-common-v2.c | 4 ++++
>  1 file changed, 4 insertions(+)
>
> diff --git a/drivers/pinctrl/mediatek/pinctrl-mtk-common-v2.c b/drivers/pinctrl/mediatek/pinctrl-mtk-common-v2.c
> index 7aeb552d16ce9..72f17f26acd80 100644
> --- a/drivers/pinctrl/mediatek/pinctrl-mtk-common-v2.c
> +++ b/drivers/pinctrl/mediatek/pinctrl-mtk-common-v2.c
> @@ -920,6 +920,10 @@ int mtk_pinconf_adv_pull_set(struct mtk_pinctrl *hw,
>                         err = hw->soc->bias_set(hw, desc, pullup);
>                         if (err)
>                                 return err;
> +               } else if (hw->soc->bias_set_combo) {
> +                       err = hw->soc->bias_set_combo(hw, desc, pullup, arg);
> +                       if (err)
> +                               return err;
>                 } else {
>                         return -ENOTSUPP;
>                 }
> --
> 2.29.2.729.g45daf8777d-goog
>