1 // SPDX-License-Identifier: GPL-2.0-only
16 #include "phy-samsung-usb2.h"
21 	struct samsung_usb2_phy_driver *drv = inst->drv;  in samsung_usb2_phy_power_on()
24 	dev_dbg(drv->dev, "Request to power_on \"%s\" usb phy\n",  in samsung_usb2_phy_power_on()
25 		inst->cfg->label);  in samsung_usb2_phy_power_on()
27 	if (drv->vbus) {  in samsung_usb2_phy_power_on()
28 		ret = regulator_enable(drv->vbus);  in samsung_usb2_phy_power_on()
33 	ret = clk_prepare_enable(drv->clk);  in samsung_usb2_phy_power_on()
36 	ret = clk_prepare_enable(drv->ref_clk);  in samsung_usb2_phy_power_on()
39 	if (inst->cfg->power_on) {  in samsung_usb2_phy_power_on()
40 		spin_lock(&drv->lock);  in samsung_usb2_phy_power_on()
41 		ret = inst->cfg->power_on(inst);  in samsung_usb2_phy_power_on()
42 		spin_unlock(&drv->lock);  in samsung_usb2_phy_power_on()
50 	clk_disable_unprepare(drv->ref_clk);  in samsung_usb2_phy_power_on()
52 	clk_disable_unprepare(drv->clk);  in samsung_usb2_phy_power_on()
54 	if (drv->vbus)  in samsung_usb2_phy_power_on()
55 		regulator_disable(drv->vbus);  in samsung_usb2_phy_power_on()
63 	struct samsung_usb2_phy_driver *drv = inst->drv;  in samsung_usb2_phy_power_off()
66 	dev_dbg(drv->dev, "Request to power_off \"%s\" usb phy\n",  in samsung_usb2_phy_power_off()
67 		inst->cfg->label);  in samsung_usb2_phy_power_off()
68 	if (inst->cfg->power_off) {  in samsung_usb2_phy_power_off()
69 		spin_lock(&drv->lock);  in samsung_usb2_phy_power_off()
70 		ret = inst->cfg->power_off(inst);  in samsung_usb2_phy_power_off()
71 		spin_unlock(&drv->lock);  in samsung_usb2_phy_power_off()
75 	clk_disable_unprepare(drv->ref_clk);  in samsung_usb2_phy_power_off()
76 	clk_disable_unprepare(drv->clk);  in samsung_usb2_phy_power_off()
77 	if (drv->vbus)  in samsung_usb2_phy_power_off()
78 		ret = regulator_disable(drv->vbus);  in samsung_usb2_phy_power_off()
96 		return ERR_PTR(-EINVAL);  in samsung_usb2_phy_xlate()
98 	if (WARN_ON(args->args[0] >= drv->cfg->num_phys))  in samsung_usb2_phy_xlate()
99 		return ERR_PTR(-ENODEV);  in samsung_usb2_phy_xlate()
101 	return drv->instances[args->args[0]].phy;  in samsung_usb2_phy_xlate()
107 		.compatible = "samsung,exynos3250-usb2-phy",
113 		.compatible = "samsung,exynos4210-usb2-phy",
119 		.compatible = "samsung,exynos4x12-usb2-phy",
125 		.compatible = "samsung,exynos5250-usb2-phy",
129 		.compatible = "samsung,exynos5420-usb2-phy",
135 		.compatible = "samsung,s5pv210-usb2-phy",
146 	struct device *dev = &pdev->dev;  in samsung_usb2_phy_probe()
151 	if (!pdev->dev.of_node) {  in samsung_usb2_phy_probe()
153 		return -EINVAL;  in samsung_usb2_phy_probe()
158 		return -EINVAL;  in samsung_usb2_phy_probe()
160 	drv = devm_kzalloc(dev, struct_size(drv, instances, cfg->num_phys),  in samsung_usb2_phy_probe()
163 		return -ENOMEM;  in samsung_usb2_phy_probe()
166 	spin_lock_init(&drv->lock);  in samsung_usb2_phy_probe()
168 	drv->cfg = cfg;  in samsung_usb2_phy_probe()
169 	drv->dev = dev;  in samsung_usb2_phy_probe()
171 	drv->reg_phy = devm_platform_ioremap_resource(pdev, 0);  in samsung_usb2_phy_probe()
172 	if (IS_ERR(drv->reg_phy)) {  in samsung_usb2_phy_probe()
174 		return PTR_ERR(drv->reg_phy);  in samsung_usb2_phy_probe()
177 	drv->reg_pmu = syscon_regmap_lookup_by_phandle(pdev->dev.of_node,  in samsung_usb2_phy_probe()
178 		"samsung,pmureg-phandle");  in samsung_usb2_phy_probe()
179 	if (IS_ERR(drv->reg_pmu)) {  in samsung_usb2_phy_probe()
180 		dev_err(dev, "Failed to map PMU registers (via syscon)\n");  in samsung_usb2_phy_probe()
181 		return PTR_ERR(drv->reg_pmu);  in samsung_usb2_phy_probe()
184 	if (drv->cfg->has_mode_switch) {  in samsung_usb2_phy_probe()
185 		drv->reg_sys = syscon_regmap_lookup_by_phandle(  in samsung_usb2_phy_probe()
186 				pdev->dev.of_node, "samsung,sysreg-phandle");  in samsung_usb2_phy_probe()
187 		if (IS_ERR(drv->reg_sys)) {  in samsung_usb2_phy_probe()
189 			return PTR_ERR(drv->reg_sys);  in samsung_usb2_phy_probe()
193 	drv->clk = devm_clk_get(dev, "phy");  in samsung_usb2_phy_probe()
194 	if (IS_ERR(drv->clk)) {  in samsung_usb2_phy_probe()
196 		return PTR_ERR(drv->clk);  in samsung_usb2_phy_probe()
199 	drv->ref_clk = devm_clk_get(dev, "ref");  in samsung_usb2_phy_probe()
200 	if (IS_ERR(drv->ref_clk)) {  in samsung_usb2_phy_probe()
202 		return PTR_ERR(drv->ref_clk);  in samsung_usb2_phy_probe()
205 	drv->ref_rate = clk_get_rate(drv->ref_clk);  in samsung_usb2_phy_probe()
206 	if (drv->cfg->rate_to_clk) {  in samsung_usb2_phy_probe()
207 		ret = drv->cfg->rate_to_clk(drv->ref_rate, &drv->ref_reg_val);  in samsung_usb2_phy_probe()
212 	drv->vbus = devm_regulator_get(dev, "vbus");  in samsung_usb2_phy_probe()
213 	if (IS_ERR(drv->vbus)) {  in samsung_usb2_phy_probe()
214 		ret = PTR_ERR(drv->vbus);  in samsung_usb2_phy_probe()
215 		if (ret == -EPROBE_DEFER)  in samsung_usb2_phy_probe()
217 		drv->vbus = NULL;  in samsung_usb2_phy_probe()
220 	for (i = 0; i < drv->cfg->num_phys; i++) {  in samsung_usb2_phy_probe()
221 		char *label = drv->cfg->phys[i].label;  in samsung_usb2_phy_probe()
222 		struct samsung_usb2_phy_instance *p = &drv->instances[i];  in samsung_usb2_phy_probe()
225 		p->phy = devm_phy_create(dev, NULL, &samsung_usb2_phy_ops);  in samsung_usb2_phy_probe()
226 		if (IS_ERR(p->phy)) {  in samsung_usb2_phy_probe()
227 			dev_err(drv->dev, "Failed to create usb2_phy \"%s\"\n",  in samsung_usb2_phy_probe()
229 			return PTR_ERR(p->phy);  in samsung_usb2_phy_probe()
232 		p->cfg = &drv->cfg->phys[i];  in samsung_usb2_phy_probe()
233 		p->drv = drv;  in samsung_usb2_phy_probe()
234 		phy_set_bus_width(p->phy, 8);  in samsung_usb2_phy_probe()
235 		phy_set_drvdata(p->phy, p);  in samsung_usb2_phy_probe()
241 		dev_err(drv->dev, "Failed to register phy provider\n");  in samsung_usb2_phy_probe()
252 		.name		= "samsung-usb2-phy",
261 MODULE_ALIAS("platform:samsung-usb2-phy");