1 // SPDX-License-Identifier: GPL-2.0
3  * Renesas RZ/G2L USBPHY control driver
15 #include <linux/reset-controller.h>
49 	void __iomem *base = priv->base;  in rzg2l_usbphy_ctrl_assert()
53 	spin_lock_irqsave(&priv->lock, flags);  in rzg2l_usbphy_ctrl_assert()
59 	spin_unlock_irqrestore(&priv->lock, flags);  in rzg2l_usbphy_ctrl_assert()
68 	void __iomem *base = priv->base;  in rzg2l_usbphy_ctrl_deassert()
72 	spin_lock_irqsave(&priv->lock, flags);  in rzg2l_usbphy_ctrl_deassert()
78 	spin_unlock_irqrestore(&priv->lock, flags);  in rzg2l_usbphy_ctrl_deassert()
91 	return !!(readl(priv->base + RESET) & port_mask);  in rzg2l_usbphy_ctrl_status()
95 	{ .compatible = "renesas,rzg2l-usbphy-ctrl" },
115 	struct device *dev = &pdev->dev;  in rzg2l_usbphy_ctrl_probe()
125 		return -ENOMEM;  in rzg2l_usbphy_ctrl_probe()
127 	priv->base = devm_platform_ioremap_resource(pdev, 0);  in rzg2l_usbphy_ctrl_probe()
128 	if (IS_ERR(priv->base))  in rzg2l_usbphy_ctrl_probe()
129 		return PTR_ERR(priv->base);  in rzg2l_usbphy_ctrl_probe()
131 	regmap = devm_regmap_init_mmio(dev, priv->base + VBENCTL, &rzg2l_usb_regconf);  in rzg2l_usbphy_ctrl_probe()
135 	priv->rstc = devm_reset_control_get_exclusive(&pdev->dev, NULL);  in rzg2l_usbphy_ctrl_probe()
136 	if (IS_ERR(priv->rstc))  in rzg2l_usbphy_ctrl_probe()
137 		return dev_err_probe(dev, PTR_ERR(priv->rstc),  in rzg2l_usbphy_ctrl_probe()
140 	error = reset_control_deassert(priv->rstc);  in rzg2l_usbphy_ctrl_probe()
144 	spin_lock_init(&priv->lock);  in rzg2l_usbphy_ctrl_probe()
147 	pm_runtime_enable(&pdev->dev);  in rzg2l_usbphy_ctrl_probe()
148 	error = pm_runtime_resume_and_get(&pdev->dev);  in rzg2l_usbphy_ctrl_probe()
150 		dev_err_probe(&pdev->dev, error, "pm_runtime_resume_and_get failed");  in rzg2l_usbphy_ctrl_probe()
155 	spin_lock_irqsave(&priv->lock, flags);  in rzg2l_usbphy_ctrl_probe()
156 	val = readl(priv->base + RESET);  in rzg2l_usbphy_ctrl_probe()
158 	writel(val, priv->base + RESET);  in rzg2l_usbphy_ctrl_probe()
159 	spin_unlock_irqrestore(&priv->lock, flags);  in rzg2l_usbphy_ctrl_probe()
161 	priv->rcdev.ops = &rzg2l_usbphy_ctrl_reset_ops;  in rzg2l_usbphy_ctrl_probe()
162 	priv->rcdev.of_reset_n_cells = 1;  in rzg2l_usbphy_ctrl_probe()
163 	priv->rcdev.nr_resets = NUM_PORTS;  in rzg2l_usbphy_ctrl_probe()
164 	priv->rcdev.of_node = dev->of_node;  in rzg2l_usbphy_ctrl_probe()
165 	priv->rcdev.dev = dev;  in rzg2l_usbphy_ctrl_probe()
167 	error = devm_reset_controller_register(dev, &priv->rcdev);  in rzg2l_usbphy_ctrl_probe()
171 	vdev = platform_device_alloc("rzg2l-usb-vbus-regulator", pdev->id);  in rzg2l_usbphy_ctrl_probe()
173 		error = -ENOMEM;  in rzg2l_usbphy_ctrl_probe()
176 	vdev->dev.parent = dev;  in rzg2l_usbphy_ctrl_probe()
177 	priv->vdev = vdev;  in rzg2l_usbphy_ctrl_probe()
188 	pm_runtime_put(&pdev->dev);  in rzg2l_usbphy_ctrl_probe()
190 	pm_runtime_disable(&pdev->dev);  in rzg2l_usbphy_ctrl_probe()
191 	reset_control_assert(priv->rstc);  in rzg2l_usbphy_ctrl_probe()
197 	struct rzg2l_usbphy_ctrl_priv *priv = dev_get_drvdata(&pdev->dev);  in rzg2l_usbphy_ctrl_remove()
199 	platform_device_unregister(priv->vdev);  in rzg2l_usbphy_ctrl_remove()
200 	pm_runtime_put(&pdev->dev);  in rzg2l_usbphy_ctrl_remove()
201 	pm_runtime_disable(&pdev->dev);  in rzg2l_usbphy_ctrl_remove()
202 	reset_control_assert(priv->rstc);  in rzg2l_usbphy_ctrl_remove()
216 MODULE_DESCRIPTION("Renesas RZ/G2L USBPHY Control");