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Date: Wed, 26 Oct 2022 14:40:39 +0800 From: Yinbo Zhu <zhuyinbo@...ngson.cn> To: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>, Linus Walleij <linus.walleij@...aro.org>, Rob Herring <robh+dt@...nel.org>, Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>, linux-gpio@...r.kernel.org, devicetree@...r.kernel.org, linux-kernel@...r.kernel.org, zhanghongchen <zhanghongchen@...ngson.cn>, zhuyinbo@...ngson.cn Subject: Re: [PATCH v3 1/2] pinctrl: pinctrl-loongson2: add pinctrl driver support 在 2022/10/26 上午12:07, Krzysztof Kozlowski 写道: > On 23/10/2022 21:42, Yinbo Zhu wrote: >> The loongson2 SoC has a few pins that can be used as GPIOs or take >> multiple other functions. Add a driver for the pinmuxing. >> >> There is currently no support for GPIO pin pull-up and pull-down. > > Thank you for your patch. There is something to discuss/improve. > >> +static const struct pinmux_ops loongson2_pmx_ops = { >> + .set_mux = loongson2_pmx_set_mux, >> + .get_functions_count = loongson2_pmx_get_funcs_count, >> + .get_function_name = loongson2_pmx_get_func_name, >> + .get_function_groups = loongson2_pmx_get_groups, >> +}; >> + >> +static int loongson2_pinctrl_probe(struct platform_device *pdev) >> +{ >> + struct device *dev = &pdev->dev; >> + struct loongson2_pinctrl *pctrl; >> + struct resource *res; >> + >> + pctrl = devm_kzalloc(dev, sizeof(*pctrl), GFP_KERNEL); >> + if (!pctrl) >> + return -ENOMEM; >> + >> + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); >> + pctrl->reg_base = devm_ioremap_resource(dev, res); > > This is still not fixed. sorry, I don't get your meaning about "Use combined helper for this." please you tell me more specific. Thanks. BRs Yinbo > >> + if (IS_ERR(pctrl->reg_base)) >> + return dev_err_probe(pctrl->dev, PTR_ERR(pctrl->reg_base), >> + "unable to map I/O memory"); > > > Best regards, > Krzysztof >
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