Re: [PATCH v4 5/6] pinctrl: amd: Add amd_get_iomux_res function

[Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>]

On Wed, Jun 01, 2022 at 03:32:13PM +0530, Basavaraj Natikar wrote:
> Presently there is no way to change pinmux configuration run time.
> Hence add a function to get IOMUX resource which can be used to
> configure IOMUX GPIO pins run time.

...

> +static void amd_get_iomux_res(struct amd_gpio *gpio_dev)
> +{
> +	struct pinctrl_desc *desc = &amd_pinctrl_desc;
> +	struct device *dev = &gpio_dev->pdev->dev;
> +	struct resource *res;
> +	int index;
> +
> +	index = device_property_match_string(dev, "pinctrl-resource-names",  "iomux");
> +	if (index > 0) {

> +		res = platform_get_resource(gpio_dev->pdev, IORESOURCE_MEM, index);
> +		if (!res) {
> +			dev_warn(dev, "Failed to get iomux %d io resource\n", index);
> +			return;
> +		}
> +
> +		gpio_dev->iomux_base = devm_ioremap(dev, res->start, resource_size(res));
> +		if (!gpio_dev->iomux_base) {
> +			desc->pmxops = NULL;
> +			dev_warn(dev, "failed to devm_ioremap() iomux_base\n");
> +		}

	iomux_base = devm_platform_ioremap_resource(..., index);
	if (IS_ERR(...))
		dev_warn();

> +	} else {
> +		desc->pmxops = NULL;
> +		dev_warn(dev, "failed to get iomux index\n");
> +	}
> +}

-- 
With Best Regards,
Andy Shevchenko