1 // SPDX-License-Identifier: GPL-2.0
3  * Ingenic SoCs USB PHY driver
15 #include <linux/usb/phy.h>
100 	void (*usb_phy_init)(struct usb_phy *phy);
106 	struct usb_phy phy;  member
119 static inline struct jz4770_phy *phy_to_jz4770_phy(struct usb_phy *phy)  in phy_to_jz4770_phy()  argument
121 	return container_of(phy, struct jz4770_phy, phy);  in phy_to_jz4770_phy()
130 	if (priv->soc_info->version >= ID_X1000) {  in ingenic_usb_phy_set_peripheral()
131 		reg = readl(priv->base + REG_USBPCR1_OFFSET);  in ingenic_usb_phy_set_peripheral()
133 		writel(reg, priv->base + REG_USBPCR1_OFFSET);  in ingenic_usb_phy_set_peripheral()
136 	reg = readl(priv->base + REG_USBPCR_OFFSET);  in ingenic_usb_phy_set_peripheral()
139 	writel(reg, priv->base + REG_USBPCR_OFFSET);  in ingenic_usb_phy_set_peripheral()
149 	reg = readl(priv->base + REG_USBPCR_OFFSET);  in ingenic_usb_phy_set_host()
152 	writel(reg, priv->base + REG_USBPCR_OFFSET);  in ingenic_usb_phy_set_host()
157 static int ingenic_usb_phy_init(struct usb_phy *phy)  in ingenic_usb_phy_init()  argument
159 	struct jz4770_phy *priv = phy_to_jz4770_phy(phy);  in ingenic_usb_phy_init()
163 	err = regulator_enable(priv->vcc_supply);  in ingenic_usb_phy_init()
165 		dev_err(priv->dev, "Unable to enable VCC: %d\n", err);  in ingenic_usb_phy_init()
169 	err = clk_prepare_enable(priv->clk);  in ingenic_usb_phy_init()
171 		dev_err(priv->dev, "Unable to start clock: %d\n", err);  in ingenic_usb_phy_init()
175 	priv->soc_info->usb_phy_init(phy);  in ingenic_usb_phy_init()
177 	/* Wait for PHY to reset */  in ingenic_usb_phy_init()
179 	reg = readl(priv->base + REG_USBPCR_OFFSET);  in ingenic_usb_phy_init()
180 	writel(reg & ~USBPCR_POR, priv->base + REG_USBPCR_OFFSET);  in ingenic_usb_phy_init()
186 static void ingenic_usb_phy_shutdown(struct usb_phy *phy)  in ingenic_usb_phy_shutdown()  argument
188 	struct jz4770_phy *priv = phy_to_jz4770_phy(phy);  in ingenic_usb_phy_shutdown()
190 	clk_disable_unprepare(priv->clk);  in ingenic_usb_phy_shutdown()
191 	regulator_disable(priv->vcc_supply);  in ingenic_usb_phy_shutdown()
194 static void ingenic_usb_phy_remove(void *phy)  in ingenic_usb_phy_remove()  argument
196 	usb_remove_phy(phy);  in ingenic_usb_phy_remove()
199 static void jz4770_usb_phy_init(struct usb_phy *phy)  in jz4770_usb_phy_init()  argument
201 	struct jz4770_phy *priv = phy_to_jz4770_phy(phy);  in jz4770_usb_phy_init()
208 	writel(reg, priv->base + REG_USBPCR_OFFSET);  in jz4770_usb_phy_init()
211 static void jz4780_usb_phy_init(struct usb_phy *phy)  in jz4780_usb_phy_init()  argument
213 	struct jz4770_phy *priv = phy_to_jz4770_phy(phy);  in jz4780_usb_phy_init()
216 	reg = readl(priv->base + REG_USBPCR1_OFFSET) | USBPCR1_USB_SEL |  in jz4780_usb_phy_init()
218 	writel(reg, priv->base + REG_USBPCR1_OFFSET);  in jz4780_usb_phy_init()
221 	writel(reg, priv->base + REG_USBPCR_OFFSET);  in jz4780_usb_phy_init()
224 static void x1000_usb_phy_init(struct usb_phy *phy)  in x1000_usb_phy_init()  argument
226 	struct jz4770_phy *priv = phy_to_jz4770_phy(phy);  in x1000_usb_phy_init()
229 	reg = readl(priv->base + REG_USBPCR1_OFFSET) | USBPCR1_WORD_IF_16BIT;  in x1000_usb_phy_init()
230 	writel(reg, priv->base + REG_USBPCR1_OFFSET);  in x1000_usb_phy_init()
235 	writel(reg, priv->base + REG_USBPCR_OFFSET);  in x1000_usb_phy_init()
238 static void x1830_usb_phy_init(struct usb_phy *phy)  in x1830_usb_phy_init()  argument
240 	struct jz4770_phy *priv = phy_to_jz4770_phy(phy);  in x1830_usb_phy_init()
244 	writel(USBRDT_VBFIL_EN | USBRDT_UTMI_RST, priv->base + REG_USBRDT_OFFSET);  in x1830_usb_phy_init()
246 	reg = readl(priv->base + REG_USBPCR1_OFFSET) | USBPCR1_WORD_IF_16BIT |  in x1830_usb_phy_init()
248 	writel(reg, priv->base + REG_USBPCR1_OFFSET);  in x1830_usb_phy_init()
252 	writel(reg, priv->base + REG_USBPCR_OFFSET);  in x1830_usb_phy_init()
280 	{ .compatible = "ingenic,jz4770-phy", .data = &jz4770_soc_info },
281 	{ .compatible = "ingenic,jz4780-phy", .data = &jz4780_soc_info },
282 	{ .compatible = "ingenic,x1000-phy", .data = &x1000_soc_info },
283 	{ .compatible = "ingenic,x1830-phy", .data = &x1830_soc_info },
290 	struct device *dev = &pdev->dev;  in jz4770_phy_probe()
296 		return -ENOMEM;  in jz4770_phy_probe()
298 	priv->soc_info = device_get_match_data(&pdev->dev);  in jz4770_phy_probe()
299 	if (!priv->soc_info) {  in jz4770_phy_probe()
300 		dev_err(&pdev->dev, "Error: No device match found\n");  in jz4770_phy_probe()
301 		return -ENODEV;  in jz4770_phy_probe()
305 	priv->dev = dev;  in jz4770_phy_probe()
306 	priv->phy.dev = dev;  in jz4770_phy_probe()
307 	priv->phy.otg = &priv->otg;  in jz4770_phy_probe()
308 	priv->phy.label = "ingenic-usb-phy";  in jz4770_phy_probe()
309 	priv->phy.init = ingenic_usb_phy_init;  in jz4770_phy_probe()
310 	priv->phy.shutdown = ingenic_usb_phy_shutdown;  in jz4770_phy_probe()
312 	priv->otg.state = OTG_STATE_UNDEFINED;  in jz4770_phy_probe()
313 	priv->otg.usb_phy = &priv->phy;  in jz4770_phy_probe()
314 	priv->otg.set_host = ingenic_usb_phy_set_host;  in jz4770_phy_probe()
315 	priv->otg.set_peripheral = ingenic_usb_phy_set_peripheral;  in jz4770_phy_probe()
317 	priv->base = devm_platform_ioremap_resource(pdev, 0);  in jz4770_phy_probe()
318 	if (IS_ERR(priv->base)) {  in jz4770_phy_probe()
320 		return PTR_ERR(priv->base);  in jz4770_phy_probe()
323 	priv->clk = devm_clk_get(dev, NULL);  in jz4770_phy_probe()
324 	if (IS_ERR(priv->clk))  in jz4770_phy_probe()
325 		return dev_err_probe(dev, PTR_ERR(priv->clk),  in jz4770_phy_probe()
328 	priv->vcc_supply = devm_regulator_get(dev, "vcc");  in jz4770_phy_probe()
329 	if (IS_ERR(priv->vcc_supply))  in jz4770_phy_probe()
330 		return dev_err_probe(dev, PTR_ERR(priv->vcc_supply),  in jz4770_phy_probe()
333 	err = usb_add_phy(&priv->phy, USB_PHY_TYPE_USB2);  in jz4770_phy_probe()
335 		return dev_err_probe(dev, err, "Unable to register PHY\n");  in jz4770_phy_probe()
337 	return devm_add_action_or_reset(dev, ingenic_usb_phy_remove, &priv->phy);  in jz4770_phy_probe()
343 		.name	= "jz4770-phy",
352 MODULE_DESCRIPTION("Ingenic SoCs USB PHY driver");