Obtain Pin Control Resources

Usually by using the devm_pinctrl_get interface, you can obtain all the pin resources of a device.

The following code block provides an example.

        struct device *dev = &pcie->pdev->dev;

        pcie->pinctrl = devm_pinctrl_get(dev);
        if (IS_ERR_OR_NULL(pcie->pinctrl)) {
                dev_err(dev, "Getting pinctrl handle failed\n");
                return -EINVAL;
        }