linux-kernel - Re: [PATCH v1 2/2] pinctrl: nuvoton: add NPCM8XX pinctrl and GPIO driver

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Date:   Tue, 12 Jul 2022 14:34:53 +0300
From:   Tomer Maimon <tmaimon77@...il.com>
To:     Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
Cc:     Avi Fishman <avifishman70@...il.com>,
        Tali Perry <tali.perry1@...il.com>,
        Joel Stanley <joel@....id.au>,
        Patrick Venture <venture@...gle.com>,
        Nancy Yuen <yuenn@...gle.com>,
        Benjamin Fair <benjaminfair@...gle.com>,
        Linus Walleij <linus.walleij@...aro.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Jonathan Neuschäfer <j.neuschaefer@....net>,
        zhengbin13@...wei.com, OpenBMC Maillist <openbmc@...ts.ozlabs.org>,
        "open list:GPIO SUBSYSTEM" <linux-gpio@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        devicetree <devicetree@...r.kernel.org>
Subject: Re: [PATCH v1 2/2] pinctrl: nuvoton: add NPCM8XX pinctrl and GPIO driver

HI Krzysztof,

Thanks for your comment, they will be addressed next version,

On Tue, 12 Jul 2022 at 12:50, Krzysztof Kozlowski
<krzysztof.kozlowski@...aro.org> wrote:
>
> On 10/07/2022 12:21, Tomer Maimon wrote:
> > Add pinctrl and GPIO controller driver support to Arbel BMC NPCM8XX SoC.
> >
> > Arbel BMC NPCM8XX pinctrl driver based on Poleg NPCM7XX, except the
> > pin mux mapping difference the NPCM8XX GPIO supports adjust debounce
> > period time.
> >
> > Signed-off-by: Tomer Maimon <tmaimon77@...il.com>
>
> (...)
>
> > +
> > +static int npcm8xx_pinctrl_probe(struct platform_device *pdev)
> > +{
> > +     struct npcm8xx_pinctrl *pctrl;
> > +     int ret;
> > +
> > +     pctrl = devm_kzalloc(&pdev->dev, sizeof(*pctrl), GFP_KERNEL);
> > +     if (!pctrl)
> > +             return -ENOMEM;
> > +
> > +     pctrl->dev = &pdev->dev;
> > +     dev_set_drvdata(&pdev->dev, pctrl);
> > +
> > +     pctrl->gcr_regmap =
> > +             syscon_regmap_lookup_by_compatible("nuvoton,npcm845-gcr");
>
> No. Use property. By this patchset, I would expect that you learnt from
> previous mistakes around this. Why repeating the same trouble second time?
>
> > +     if (IS_ERR(pctrl->gcr_regmap)) {
> > +             dev_err(pctrl->dev, "didn't find nuvoton,npcm845-gcr\n");
> > +             return PTR_ERR(pctrl->gcr_regmap);
> > +     }
> > +
> > +     ret = npcm8xx_gpio_of(pctrl);
> > +     if (ret < 0) {
> > +             dev_err(pctrl->dev, "Failed to gpio dt-binding %u\n", ret);
> > +             return ret;
> > +     }
> > +
> > +     pctrl->pctldev = devm_pinctrl_register(&pdev->dev,
> > +                                            &npcm8xx_pinctrl_desc, pctrl);
> > +     if (IS_ERR(pctrl->pctldev)) {
> > +             dev_err(&pdev->dev, "Failed to register pinctrl device\n");
> > +             return PTR_ERR(pctrl->pctldev);
> > +     }
> > +
> > +     ret = npcm8xx_gpio_register(pctrl);
> > +     if (ret < 0) {
> > +             dev_err(pctrl->dev, "Failed to register gpio %u\n", ret);
> > +             return ret;
> > +     }
> > +
> > +     pr_info("npcm8xx Pinctrl driver probed\n");
>
>
> No pr_ in devices. No success debug messages.
>
> > +     return 0;
> > +}
> > +
> > +static const struct of_device_id npcm8xx_pinctrl_match[] = {
> > +     { .compatible = "nuvoton,npcm845-pinctrl" },
> > +     { },
> > +};
> > +MODULE_DEVICE_TABLE(of, npcm8xx_pinctrl_match);
> > +
> > +static struct platform_driver npcm8xx_pinctrl_driver = {
> > +     .probe = npcm8xx_pinctrl_probe,
> > +     .driver = {
> > +             .name = "npcm8xx-pinctrl",
> > +             .of_match_table = npcm8xx_pinctrl_match,
> > +             .suppress_bind_attrs = true,
> > +     },
> > +};
> > +
> > +static int __init npcm8xx_pinctrl_register(void)
> > +{
> > +     return platform_driver_register(&npcm8xx_pinctrl_driver);
> > +}
> > +arch_initcall(npcm8xx_pinctrl_register);
> > +
> > +MODULE_LICENSE("GPL v2");
> > +MODULE_AUTHOR("tomer.maimon@...oton.com");
> > +MODULE_DESCRIPTION("Nuvoton NPCM8XX Pinctrl and GPIO driver");
>
>
> Best regards,
> Krzysztof

Best regards,

Tomer