3  * Allwinner sun9i USB phy driver
7  * Based on phy-sun4i-usb.c from
18 #include <linux/phy/phy.h>
36 	struct phy *phy;  member
44 static void sun9i_usb_phy_passby(struct sun9i_usb_phy *phy, int enable)  in sun9i_usb_phy_passby()  argument
52 	if (phy->type == USBPHY_INTERFACE_MODE_HSIC)  in sun9i_usb_phy_passby()
56 	reg_value = readl(phy->pmu);  in sun9i_usb_phy_passby()
63 	writel(reg_value, phy->pmu);  in sun9i_usb_phy_passby()
66 static int sun9i_usb_phy_init(struct phy *_phy)  in sun9i_usb_phy_init()
68 	struct sun9i_usb_phy *phy = phy_get_drvdata(_phy);  in sun9i_usb_phy_init()  local
71 	ret = clk_prepare_enable(phy->clk);  in sun9i_usb_phy_init()
75 	ret = clk_prepare_enable(phy->hsic_clk);  in sun9i_usb_phy_init()
79 	ret = reset_control_deassert(phy->reset);  in sun9i_usb_phy_init()
83 	sun9i_usb_phy_passby(phy, 1);  in sun9i_usb_phy_init()
87 	clk_disable_unprepare(phy->hsic_clk);  in sun9i_usb_phy_init()
90 	clk_disable_unprepare(phy->clk);  in sun9i_usb_phy_init()
96 static int sun9i_usb_phy_exit(struct phy *_phy)  in sun9i_usb_phy_exit()
98 	struct sun9i_usb_phy *phy = phy_get_drvdata(_phy);  in sun9i_usb_phy_exit()  local
100 	sun9i_usb_phy_passby(phy, 0);  in sun9i_usb_phy_exit()
101 	reset_control_assert(phy->reset);  in sun9i_usb_phy_exit()
102 	clk_disable_unprepare(phy->hsic_clk);  in sun9i_usb_phy_exit()
103 	clk_disable_unprepare(phy->clk);  in sun9i_usb_phy_exit()
116 	struct sun9i_usb_phy *phy;  in sun9i_usb_phy_probe()  local
122 	phy = devm_kzalloc(dev, sizeof(*phy), GFP_KERNEL);  in sun9i_usb_phy_probe()
123 	if (!phy)  in sun9i_usb_phy_probe()
126 	phy->type = of_usb_get_phy_mode(np);  in sun9i_usb_phy_probe()
127 	if (phy->type == USBPHY_INTERFACE_MODE_HSIC) {  in sun9i_usb_phy_probe()
128 		phy->clk = devm_clk_get(dev, "hsic_480M");  in sun9i_usb_phy_probe()
129 		if (IS_ERR(phy->clk)) {  in sun9i_usb_phy_probe()
131 			return PTR_ERR(phy->clk);  in sun9i_usb_phy_probe()
134 		phy->hsic_clk = devm_clk_get(dev, "hsic_12M");  in sun9i_usb_phy_probe()
135 		if (IS_ERR(phy->hsic_clk)) {  in sun9i_usb_phy_probe()
137 			return PTR_ERR(phy->hsic_clk);  in sun9i_usb_phy_probe()
140 		phy->reset = devm_reset_control_get(dev, "hsic");  in sun9i_usb_phy_probe()
141 		if (IS_ERR(phy->reset)) {  in sun9i_usb_phy_probe()
143 			return PTR_ERR(phy->reset);  in sun9i_usb_phy_probe()
146 		phy->clk = devm_clk_get(dev, "phy");  in sun9i_usb_phy_probe()
147 		if (IS_ERR(phy->clk)) {  in sun9i_usb_phy_probe()
148 			dev_err(dev, "failed to get phy clock\n");  in sun9i_usb_phy_probe()
149 			return PTR_ERR(phy->clk);  in sun9i_usb_phy_probe()
152 		phy->reset = devm_reset_control_get(dev, "phy");  in sun9i_usb_phy_probe()
153 		if (IS_ERR(phy->reset)) {  in sun9i_usb_phy_probe()
155 			return PTR_ERR(phy->reset);  in sun9i_usb_phy_probe()
160 	phy->pmu = devm_ioremap_resource(dev, res);  in sun9i_usb_phy_probe()
161 	if (IS_ERR(phy->pmu))  in sun9i_usb_phy_probe()
162 		return PTR_ERR(phy->pmu);  in sun9i_usb_phy_probe()
164 	phy->phy = devm_phy_create(dev, NULL, &sun9i_usb_phy_ops);  in sun9i_usb_phy_probe()
165 	if (IS_ERR(phy->phy)) {  in sun9i_usb_phy_probe()
166 		dev_err(dev, "failed to create PHY\n");  in sun9i_usb_phy_probe()
167 		return PTR_ERR(phy->phy);  in sun9i_usb_phy_probe()
170 	phy_set_drvdata(phy->phy, phy);  in sun9i_usb_phy_probe()
177 	{ .compatible = "allwinner,sun9i-a80-usb-phy" },
186 		.name  = "sun9i-usb-phy",
191 MODULE_DESCRIPTION("Allwinner sun9i USB phy driver");