1 // SPDX-License-Identifier: GPL-2.0
3  * Ingenic SoCs USB PHY driver
15 #include <linux/phy/phy.h>
87 	void (*usb_phy_init)(struct phy *phy);
93 	struct phy *phy;  member
99 static int ingenic_usb_phy_init(struct phy *phy)  in ingenic_usb_phy_init()  argument
101 	struct ingenic_usb_phy *priv = phy_get_drvdata(phy);  in ingenic_usb_phy_init()
105 	err = clk_prepare_enable(priv->clk);  in ingenic_usb_phy_init()
107 		dev_err(&phy->dev, "Unable to start clock: %d\n", err);  in ingenic_usb_phy_init()
111 	priv->soc_info->usb_phy_init(phy);  in ingenic_usb_phy_init()
113 	/* Wait for PHY to reset */  in ingenic_usb_phy_init()
115 	reg = readl(priv->base + REG_USBPCR_OFFSET);  in ingenic_usb_phy_init()
116 	writel(reg & ~USBPCR_POR, priv->base + REG_USBPCR_OFFSET);  in ingenic_usb_phy_init()
122 static int ingenic_usb_phy_exit(struct phy *phy)  in ingenic_usb_phy_exit()  argument
124 	struct ingenic_usb_phy *priv = phy_get_drvdata(phy);  in ingenic_usb_phy_exit()
126 	clk_disable_unprepare(priv->clk);  in ingenic_usb_phy_exit()
127 	regulator_disable(priv->vcc_supply);  in ingenic_usb_phy_exit()
132 static int ingenic_usb_phy_power_on(struct phy *phy)  in ingenic_usb_phy_power_on()  argument
134 	struct ingenic_usb_phy *priv = phy_get_drvdata(phy);  in ingenic_usb_phy_power_on()
137 	err = regulator_enable(priv->vcc_supply);  in ingenic_usb_phy_power_on()
139 		dev_err(&phy->dev, "Unable to enable VCC: %d\n", err);  in ingenic_usb_phy_power_on()
146 static int ingenic_usb_phy_power_off(struct phy *phy)  in ingenic_usb_phy_power_off()  argument
148 	struct ingenic_usb_phy *priv = phy_get_drvdata(phy);  in ingenic_usb_phy_power_off()
150 	regulator_disable(priv->vcc_supply);  in ingenic_usb_phy_power_off()
155 static int ingenic_usb_phy_set_mode(struct phy *phy,  in ingenic_usb_phy_set_mode()  argument
158 	struct ingenic_usb_phy *priv = phy_get_drvdata(phy);  in ingenic_usb_phy_set_mode()
163 		reg = readl(priv->base + REG_USBPCR_OFFSET);  in ingenic_usb_phy_set_mode()
168 		writel(reg, priv->base + REG_USBPCR_OFFSET);  in ingenic_usb_phy_set_mode()
172 		reg = readl(priv->base + REG_USBPCR_OFFSET);  in ingenic_usb_phy_set_mode()
177 		writel(reg, priv->base + REG_USBPCR_OFFSET);  in ingenic_usb_phy_set_mode()
181 		reg = readl(priv->base + REG_USBPCR_OFFSET);  in ingenic_usb_phy_set_mode()
186 		writel(reg, priv->base + REG_USBPCR_OFFSET);  in ingenic_usb_phy_set_mode()
190 		return -EINVAL;  in ingenic_usb_phy_set_mode()
205 static void jz4770_usb_phy_init(struct phy *phy)  in jz4770_usb_phy_init()  argument
207 	struct ingenic_usb_phy *priv = phy_get_drvdata(phy);  in jz4770_usb_phy_init()
218 	writel(reg, priv->base + REG_USBPCR_OFFSET);  in jz4770_usb_phy_init()
221 static void jz4775_usb_phy_init(struct phy *phy)  in jz4775_usb_phy_init()  argument
223 	struct ingenic_usb_phy *priv = phy_get_drvdata(phy);  in jz4775_usb_phy_init()
226 	reg = readl(priv->base + REG_USBPCR1_OFFSET) | USBPCR1_USB_SEL |  in jz4775_usb_phy_init()
228 	writel(reg, priv->base + REG_USBPCR1_OFFSET);  in jz4775_usb_phy_init()
232 	writel(reg, priv->base + REG_USBPCR_OFFSET);  in jz4775_usb_phy_init()
235 static void jz4780_usb_phy_init(struct phy *phy)  in jz4780_usb_phy_init()  argument
237 	struct ingenic_usb_phy *priv = phy_get_drvdata(phy);  in jz4780_usb_phy_init()
240 	reg = readl(priv->base + REG_USBPCR1_OFFSET) | USBPCR1_USB_SEL |  in jz4780_usb_phy_init()
242 	writel(reg, priv->base + REG_USBPCR1_OFFSET);  in jz4780_usb_phy_init()
245 	writel(reg, priv->base + REG_USBPCR_OFFSET);  in jz4780_usb_phy_init()
248 static void x1000_usb_phy_init(struct phy *phy)  in x1000_usb_phy_init()  argument
250 	struct ingenic_usb_phy *priv = phy_get_drvdata(phy);  in x1000_usb_phy_init()
253 	reg = readl(priv->base + REG_USBPCR1_OFFSET) | USBPCR1_WORD_IF_16BIT;  in x1000_usb_phy_init()
254 	writel(reg, priv->base + REG_USBPCR1_OFFSET);  in x1000_usb_phy_init()
260 	writel(reg, priv->base + REG_USBPCR_OFFSET);  in x1000_usb_phy_init()
263 static void x1830_usb_phy_init(struct phy *phy)  in x1830_usb_phy_init()  argument
265 	struct ingenic_usb_phy *priv = phy_get_drvdata(phy);  in x1830_usb_phy_init()
269 	writel(USBRDT_VBFIL_EN | USBRDT_UTMI_RST, priv->base + REG_USBRDT_OFFSET);  in x1830_usb_phy_init()
271 	reg = readl(priv->base + REG_USBPCR1_OFFSET) | USBPCR1_WORD_IF_16BIT |  in x1830_usb_phy_init()
273 	writel(reg, priv->base + REG_USBPCR1_OFFSET);  in x1830_usb_phy_init()
277 	writel(reg, priv->base + REG_USBPCR_OFFSET);  in x1830_usb_phy_init()
280 static void x2000_usb_phy_init(struct phy *phy)  in x2000_usb_phy_init()  argument
282 	struct ingenic_usb_phy *priv = phy_get_drvdata(phy);  in x2000_usb_phy_init()
285 	reg = readl(priv->base + REG_USBPCR1_OFFSET) | USBPCR1_DPPD | USBPCR1_DMPD;  in x2000_usb_phy_init()
286 	writel(reg & ~USBPCR1_PORT_RST, priv->base + REG_USBPCR1_OFFSET);  in x2000_usb_phy_init()
289 	writel(reg, priv->base + REG_USBPCR_OFFSET);  in x2000_usb_phy_init()
320 	struct device *dev = &pdev->dev;  in ingenic_usb_phy_probe()
325 		return -ENOMEM;  in ingenic_usb_phy_probe()
327 	priv->soc_info = device_get_match_data(dev);  in ingenic_usb_phy_probe()
328 	if (!priv->soc_info) {  in ingenic_usb_phy_probe()
330 		return -ENODEV;  in ingenic_usb_phy_probe()
333 	priv->base = devm_platform_ioremap_resource(pdev, 0);  in ingenic_usb_phy_probe()
334 	if (IS_ERR(priv->base)) {  in ingenic_usb_phy_probe()
336 		return PTR_ERR(priv->base);  in ingenic_usb_phy_probe()
339 	priv->clk = devm_clk_get(dev, NULL);  in ingenic_usb_phy_probe()
340 	if (IS_ERR(priv->clk)) {  in ingenic_usb_phy_probe()
341 		err = PTR_ERR(priv->clk);  in ingenic_usb_phy_probe()
342 		if (err != -EPROBE_DEFER)  in ingenic_usb_phy_probe()
347 	priv->vcc_supply = devm_regulator_get(dev, "vcc");  in ingenic_usb_phy_probe()
348 	if (IS_ERR(priv->vcc_supply)) {  in ingenic_usb_phy_probe()
349 		err = PTR_ERR(priv->vcc_supply);  in ingenic_usb_phy_probe()
350 		if (err != -EPROBE_DEFER)  in ingenic_usb_phy_probe()
355 	priv->phy = devm_phy_create(dev, NULL, &ingenic_usb_phy_ops);  in ingenic_usb_phy_probe()
356 	if (IS_ERR(priv->phy))  in ingenic_usb_phy_probe()
357 		return PTR_ERR(priv->phy);  in ingenic_usb_phy_probe()
359 	phy_set_drvdata(priv->phy, priv);  in ingenic_usb_phy_probe()
367 	{ .compatible = "ingenic,jz4770-phy", .data = &jz4770_soc_info },
368 	{ .compatible = "ingenic,jz4775-phy", .data = &jz4775_soc_info },
369 	{ .compatible = "ingenic,jz4780-phy", .data = &jz4780_soc_info },
370 	{ .compatible = "ingenic,x1000-phy", .data = &x1000_soc_info },
371 	{ .compatible = "ingenic,x1830-phy", .data = &x1830_soc_info },
372 	{ .compatible = "ingenic,x2000-phy", .data = &x2000_soc_info },
380 		.name	= "ingenic-usb-phy",
389 MODULE_DESCRIPTION("Ingenic SoCs USB PHY driver");