1 // SPDX-License-Identifier: GPL-2.0-only
18 #include "phy-samsung-usb2.h"
23 	struct samsung_usb2_phy_driver *drv = inst->drv;  in samsung_usb2_phy_power_on()
26 	dev_dbg(drv->dev, "Request to power_on \"%s\" usb phy\n",  in samsung_usb2_phy_power_on()
27 		inst->cfg->label);  in samsung_usb2_phy_power_on()
29 	if (drv->vbus) {  in samsung_usb2_phy_power_on()
30 		ret = regulator_enable(drv->vbus);  in samsung_usb2_phy_power_on()
35 	ret = clk_prepare_enable(drv->clk);  in samsung_usb2_phy_power_on()
38 	ret = clk_prepare_enable(drv->ref_clk);  in samsung_usb2_phy_power_on()
41 	if (inst->cfg->power_on) {  in samsung_usb2_phy_power_on()
42 		spin_lock(&drv->lock);  in samsung_usb2_phy_power_on()
43 		ret = inst->cfg->power_on(inst);  in samsung_usb2_phy_power_on()
44 		spin_unlock(&drv->lock);  in samsung_usb2_phy_power_on()
52 	clk_disable_unprepare(drv->ref_clk);  in samsung_usb2_phy_power_on()
54 	clk_disable_unprepare(drv->clk);  in samsung_usb2_phy_power_on()
56 	if (drv->vbus)  in samsung_usb2_phy_power_on()
57 		regulator_disable(drv->vbus);  in samsung_usb2_phy_power_on()
65 	struct samsung_usb2_phy_driver *drv = inst->drv;  in samsung_usb2_phy_power_off()
68 	dev_dbg(drv->dev, "Request to power_off \"%s\" usb phy\n",  in samsung_usb2_phy_power_off()
69 		inst->cfg->label);  in samsung_usb2_phy_power_off()
70 	if (inst->cfg->power_off) {  in samsung_usb2_phy_power_off()
71 		spin_lock(&drv->lock);  in samsung_usb2_phy_power_off()
72 		ret = inst->cfg->power_off(inst);  in samsung_usb2_phy_power_off()
73 		spin_unlock(&drv->lock);  in samsung_usb2_phy_power_off()
77 	clk_disable_unprepare(drv->ref_clk);  in samsung_usb2_phy_power_off()
78 	clk_disable_unprepare(drv->clk);  in samsung_usb2_phy_power_off()
79 	if (drv->vbus)  in samsung_usb2_phy_power_off()
80 		ret = regulator_disable(drv->vbus);  in samsung_usb2_phy_power_off()
98 		return ERR_PTR(-EINVAL);  in samsung_usb2_phy_xlate()
100 	if (WARN_ON(args->args[0] >= drv->cfg->num_phys))  in samsung_usb2_phy_xlate()
101 		return ERR_PTR(-ENODEV);  in samsung_usb2_phy_xlate()
103 	return drv->instances[args->args[0]].phy;  in samsung_usb2_phy_xlate()
109 		.compatible = "samsung,exynos3250-usb2-phy",
115 		.compatible = "samsung,exynos4210-usb2-phy",
121 		.compatible = "samsung,exynos4x12-usb2-phy",
127 		.compatible = "samsung,exynos5250-usb2-phy",
131 		.compatible = "samsung,exynos5420-usb2-phy",
137 		.compatible = "samsung,s5pv210-usb2-phy",
148 	struct device *dev = &pdev->dev;  in samsung_usb2_phy_probe()
153 	if (!pdev->dev.of_node) {  in samsung_usb2_phy_probe()
155 		return -EINVAL;  in samsung_usb2_phy_probe()
160 		return -EINVAL;  in samsung_usb2_phy_probe()
162 	drv = devm_kzalloc(dev, struct_size(drv, instances, cfg->num_phys),  in samsung_usb2_phy_probe()
165 		return -ENOMEM;  in samsung_usb2_phy_probe()
168 	spin_lock_init(&drv->lock);  in samsung_usb2_phy_probe()
170 	drv->cfg = cfg;  in samsung_usb2_phy_probe()
171 	drv->dev = dev;  in samsung_usb2_phy_probe()
173 	drv->reg_phy = devm_platform_ioremap_resource(pdev, 0);  in samsung_usb2_phy_probe()
174 	if (IS_ERR(drv->reg_phy)) {  in samsung_usb2_phy_probe()
176 		return PTR_ERR(drv->reg_phy);  in samsung_usb2_phy_probe()
179 	drv->reg_pmu = syscon_regmap_lookup_by_phandle(pdev->dev.of_node,  in samsung_usb2_phy_probe()
180 		"samsung,pmureg-phandle");  in samsung_usb2_phy_probe()
181 	if (IS_ERR(drv->reg_pmu)) {  in samsung_usb2_phy_probe()
182 		dev_err(dev, "Failed to map PMU registers (via syscon)\n");  in samsung_usb2_phy_probe()
183 		return PTR_ERR(drv->reg_pmu);  in samsung_usb2_phy_probe()
186 	if (drv->cfg->has_mode_switch) {  in samsung_usb2_phy_probe()
187 		drv->reg_sys = syscon_regmap_lookup_by_phandle(  in samsung_usb2_phy_probe()
188 				pdev->dev.of_node, "samsung,sysreg-phandle");  in samsung_usb2_phy_probe()
189 		if (IS_ERR(drv->reg_sys)) {  in samsung_usb2_phy_probe()
191 			return PTR_ERR(drv->reg_sys);  in samsung_usb2_phy_probe()
195 	drv->clk = devm_clk_get(dev, "phy");  in samsung_usb2_phy_probe()
196 	if (IS_ERR(drv->clk)) {  in samsung_usb2_phy_probe()
198 		return PTR_ERR(drv->clk);  in samsung_usb2_phy_probe()
201 	drv->ref_clk = devm_clk_get(dev, "ref");  in samsung_usb2_phy_probe()
202 	if (IS_ERR(drv->ref_clk)) {  in samsung_usb2_phy_probe()
204 		return PTR_ERR(drv->ref_clk);  in samsung_usb2_phy_probe()
207 	drv->ref_rate = clk_get_rate(drv->ref_clk);  in samsung_usb2_phy_probe()
208 	if (drv->cfg->rate_to_clk) {  in samsung_usb2_phy_probe()
209 		ret = drv->cfg->rate_to_clk(drv->ref_rate, &drv->ref_reg_val);  in samsung_usb2_phy_probe()
214 	drv->vbus = devm_regulator_get(dev, "vbus");  in samsung_usb2_phy_probe()
215 	if (IS_ERR(drv->vbus)) {  in samsung_usb2_phy_probe()
216 		ret = PTR_ERR(drv->vbus);  in samsung_usb2_phy_probe()
217 		if (ret == -EPROBE_DEFER)  in samsung_usb2_phy_probe()
219 		drv->vbus = NULL;  in samsung_usb2_phy_probe()
222 	for (i = 0; i < drv->cfg->num_phys; i++) {  in samsung_usb2_phy_probe()
223 		char *label = drv->cfg->phys[i].label;  in samsung_usb2_phy_probe()
224 		struct samsung_usb2_phy_instance *p = &drv->instances[i];  in samsung_usb2_phy_probe()
227 		p->phy = devm_phy_create(dev, NULL, &samsung_usb2_phy_ops);  in samsung_usb2_phy_probe()
228 		if (IS_ERR(p->phy)) {  in samsung_usb2_phy_probe()
229 			dev_err(drv->dev, "Failed to create usb2_phy \"%s\"\n",  in samsung_usb2_phy_probe()
231 			return PTR_ERR(p->phy);  in samsung_usb2_phy_probe()
234 		p->cfg = &drv->cfg->phys[i];  in samsung_usb2_phy_probe()
235 		p->drv = drv;  in samsung_usb2_phy_probe()
236 		phy_set_bus_width(p->phy, 8);  in samsung_usb2_phy_probe()
237 		phy_set_drvdata(p->phy, p);  in samsung_usb2_phy_probe()
243 		dev_err(drv->dev, "Failed to register phy provider\n");  in samsung_usb2_phy_probe()
254 		.name		= "samsung-usb2-phy",
263 MODULE_ALIAS("platform:samsung-usb2-phy");