linux-kernel - Re: [PATCH 2/2] pinctrl: qcom: Add SM8350 pinctrl driver

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Date:   Thu, 3 Dec 2020 17:54:45 -0600
From:   Bjorn Andersson <bjorn.andersson@...aro.org>
To:     Vinod Koul <vkoul@...nel.org>
Cc:     Linus Walleij <linus.walleij@...aro.org>,
        linux-arm-msm@...r.kernel.org,
        Raghavendra Rao Ananta <rananta@...eaurora.org>,
        Andy Gross <agross@...nel.org>,
        Rob Herring <robh+dt@...nel.org>, linux-gpio@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        Jeevan Shriram <jshriram@...eaurora.org>
Subject: Re: [PATCH 2/2] pinctrl: qcom: Add SM8350 pinctrl driver

On Thu 03 Dec 01:09 CST 2020, Vinod Koul wrote:
> diff --git a/drivers/pinctrl/qcom/pinctrl-sm8350.c b/drivers/pinctrl/qcom/pinctrl-sm8350.c
[..]
> +static const int sm8350_reserved_gpios[] = {
> +	52, 53, 54, 55, 56, 57, 58, 59, -1
> +};

Reserving these gpios here instead of in the DT means that there can
never be a platform configuration using these. Is there a good reason
for this? Or should we just mark them reserved in DT?

Regards,
Bjorn

> +
> +static const struct msm_pinctrl_soc_data sm8350_pinctrl = {
> +	.pins = sm8350_pins,
> +	.npins = ARRAY_SIZE(sm8350_pins),
> +	.functions = sm8350_functions,
> +	.nfunctions = ARRAY_SIZE(sm8350_functions),
> +	.groups = sm8350_groups,
> +	.ngroups = ARRAY_SIZE(sm8350_groups),
> +	.reserved_gpios = sm8350_reserved_gpios,
> +	.ngpios = 204,
> +};
> +
> +static int sm8350_pinctrl_probe(struct platform_device *pdev)
> +{
> +	return msm_pinctrl_probe(pdev, &sm8350_pinctrl);
> +}
> +
> +static const struct of_device_id sm8350_pinctrl_of_match[] = {
> +	{ .compatible = "qcom,sm8350-pinctrl", },
> +	{ },
> +};
> +
> +static struct platform_driver sm8350_pinctrl_driver = {
> +	.driver = {
> +		.name = "sm8350-pinctrl",
> +		.of_match_table = sm8350_pinctrl_of_match,
> +	},
> +	.probe = sm8350_pinctrl_probe,
> +	.remove = msm_pinctrl_remove,
> +};
> +
> +static int __init sm8350_pinctrl_init(void)
> +{
> +	return platform_driver_register(&sm8350_pinctrl_driver);
> +}
> +arch_initcall(sm8350_pinctrl_init);
> +
> +static void __exit sm8350_pinctrl_exit(void)
> +{
> +	platform_driver_unregister(&sm8350_pinctrl_driver);
> +}
> +module_exit(sm8350_pinctrl_exit);
> +
> +MODULE_DESCRIPTION("QTI sm8350 pinctrl driver");
> +MODULE_LICENSE("GPL v2");
> +MODULE_DEVICE_TABLE(of, sm8350_pinctrl_of_match);
> -- 
> 2.26.2
>