1 // SPDX-License-Identifier: GPL-2.0
3  * phy-uniphier-usb2.c - PHY driver for UniPhier USB2 controller
4  * Copyright 2015-2018 Socionext Inc.
13 #include <linux/phy/phy.h>
22 #define SG_USBPHY12PLL		0x50c	/* Pro4 */
25 #define SG_USBPHY4CTRL		0x518	/* Pro4 */
26 #define SG_USBPHY4CTRL2		0x51c	/* Pro4 */
27 #define SG_USBPHY34PLL		0x51c	/* Pro4 */
41 	struct phy *phy;  member
47 static int uniphier_u2phy_power_on(struct phy *phy)  in uniphier_u2phy_power_on()  argument
49 	struct uniphier_u2phy_priv *priv = phy_get_drvdata(phy);  in uniphier_u2phy_power_on()
52 	if (priv->vbus)  in uniphier_u2phy_power_on()
53 		ret = regulator_enable(priv->vbus);  in uniphier_u2phy_power_on()
58 static int uniphier_u2phy_power_off(struct phy *phy)  in uniphier_u2phy_power_off()  argument
60 	struct uniphier_u2phy_priv *priv = phy_get_drvdata(phy);  in uniphier_u2phy_power_off()
62 	if (priv->vbus)  in uniphier_u2phy_power_off()
63 		regulator_disable(priv->vbus);  in uniphier_u2phy_power_off()
68 static int uniphier_u2phy_init(struct phy *phy)  in uniphier_u2phy_init()  argument
70 	struct uniphier_u2phy_priv *priv = phy_get_drvdata(phy);  in uniphier_u2phy_init()
72 	if (!priv->data)  in uniphier_u2phy_init()
75 	regmap_write(priv->regmap, priv->data->config0.offset,  in uniphier_u2phy_init()
76 		     priv->data->config0.value);  in uniphier_u2phy_init()
77 	regmap_write(priv->regmap, priv->data->config1.offset,  in uniphier_u2phy_init()
78 		     priv->data->config1.value);  in uniphier_u2phy_init()
83 static struct phy *uniphier_u2phy_xlate(struct device *dev,  in uniphier_u2phy_xlate()
88 	while (priv && args->np != priv->phy->dev.of_node)  in uniphier_u2phy_xlate()
89 		priv = priv->next;  in uniphier_u2phy_xlate()
92 		dev_err(dev, "Failed to find appropriate phy\n");  in uniphier_u2phy_xlate()
93 		return ERR_PTR(-EINVAL);  in uniphier_u2phy_xlate()
96 	return priv->phy;  in uniphier_u2phy_xlate()
108 	struct device *dev = &pdev->dev;  in uniphier_u2phy_probe()
118 		return -EINVAL;  in uniphier_u2phy_probe()
124 	parent = of_get_parent(dev->of_node);  in uniphier_u2phy_probe()
132 	for_each_child_of_node(dev->of_node, child) {  in uniphier_u2phy_probe()
135 			ret = -ENOMEM;  in uniphier_u2phy_probe()
138 		priv->regmap = regmap;  in uniphier_u2phy_probe()
140 		priv->vbus = devm_regulator_get_optional(dev, "vbus");  in uniphier_u2phy_probe()
141 		if (IS_ERR(priv->vbus)) {  in uniphier_u2phy_probe()
142 			if (PTR_ERR(priv->vbus) == -EPROBE_DEFER) {  in uniphier_u2phy_probe()
143 				ret = PTR_ERR(priv->vbus);  in uniphier_u2phy_probe()
146 			priv->vbus = NULL;  in uniphier_u2phy_probe()
149 		priv->phy = devm_phy_create(dev, child, &uniphier_u2phy_ops);  in uniphier_u2phy_probe()
150 		if (IS_ERR(priv->phy)) {  in uniphier_u2phy_probe()
151 			dev_err(dev, "Failed to create phy\n");  in uniphier_u2phy_probe()
152 			ret = PTR_ERR(priv->phy);  in uniphier_u2phy_probe()
163 			priv->data = &data[data_idx];  in uniphier_u2phy_probe()
165 			dev_warn(dev, "No phy configuration: %s\n",  in uniphier_u2phy_probe()
166 				 child->full_name);  in uniphier_u2phy_probe()
168 		phy_set_drvdata(priv->phy, priv);  in uniphier_u2phy_probe()
169 		priv->next = next;  in uniphier_u2phy_probe()
222 		.compatible = "socionext,uniphier-pro4-usb2-phy",
226 		.compatible = "socionext,uniphier-ld11-usb2-phy",
236 		.name = "uniphier-usb2-phy",
243 MODULE_DESCRIPTION("UniPhier PHY driver for USB2 controller");