1 // SPDX-License-Identifier: GPL-2.0
3  * dwc3-exynos.c - Samsung Exynos DWC3 Specific Glue layer
36 	struct regulator	*vdd33;  member
52 	struct device		*dev = &pdev->dev;  in dwc3_exynos_probe()
53 	struct device_node	*node = dev->of_node;  in dwc3_exynos_probe()
59 		return -ENOMEM;  in dwc3_exynos_probe()
62 	exynos->dev = dev;  in dwc3_exynos_probe()
63 	exynos->num_clks = driver_data->num_clks;  in dwc3_exynos_probe()
64 	exynos->clk_names = (const char **)driver_data->clk_names;  in dwc3_exynos_probe()
65 	exynos->suspend_clk_idx = driver_data->suspend_clk_idx;  in dwc3_exynos_probe()
69 	for (i = 0; i < exynos->num_clks; i++) {  in dwc3_exynos_probe()
70 		exynos->clks[i] = devm_clk_get(dev, exynos->clk_names[i]);  in dwc3_exynos_probe()
71 		if (IS_ERR(exynos->clks[i])) {  in dwc3_exynos_probe()
73 				exynos->clk_names[i]);  in dwc3_exynos_probe()
74 			return PTR_ERR(exynos->clks[i]);  in dwc3_exynos_probe()
78 	for (i = 0; i < exynos->num_clks; i++) {  in dwc3_exynos_probe()
79 		ret = clk_prepare_enable(exynos->clks[i]);  in dwc3_exynos_probe()
81 			while (i-- > 0)  in dwc3_exynos_probe()
82 				clk_disable_unprepare(exynos->clks[i]);  in dwc3_exynos_probe()
87 	if (exynos->suspend_clk_idx >= 0)  in dwc3_exynos_probe()
88 		clk_prepare_enable(exynos->clks[exynos->suspend_clk_idx]);  in dwc3_exynos_probe()
90 	exynos->vdd33 = devm_regulator_get(dev, "vdd33");  in dwc3_exynos_probe()
91 	if (IS_ERR(exynos->vdd33)) {  in dwc3_exynos_probe()
92 		ret = PTR_ERR(exynos->vdd33);  in dwc3_exynos_probe()
95 	ret = regulator_enable(exynos->vdd33);  in dwc3_exynos_probe()
97 		dev_err(dev, "Failed to enable VDD33 supply\n");  in dwc3_exynos_probe()
101 	exynos->vdd10 = devm_regulator_get(dev, "vdd10");  in dwc3_exynos_probe()
102 	if (IS_ERR(exynos->vdd10)) {  in dwc3_exynos_probe()
103 		ret = PTR_ERR(exynos->vdd10);  in dwc3_exynos_probe()
106 	ret = regulator_enable(exynos->vdd10);  in dwc3_exynos_probe()
108 		dev_err(dev, "Failed to enable VDD10 supply\n");  in dwc3_exynos_probe()
120 		ret = -ENODEV;  in dwc3_exynos_probe()
127 	regulator_disable(exynos->vdd10);  in dwc3_exynos_probe()
129 	regulator_disable(exynos->vdd33);  in dwc3_exynos_probe()
131 	for (i = exynos->num_clks - 1; i >= 0; i--)  in dwc3_exynos_probe()
132 		clk_disable_unprepare(exynos->clks[i]);  in dwc3_exynos_probe()
134 	if (exynos->suspend_clk_idx >= 0)  in dwc3_exynos_probe()
135 		clk_disable_unprepare(exynos->clks[exynos->suspend_clk_idx]);  in dwc3_exynos_probe()
145 	device_for_each_child(&pdev->dev, NULL, dwc3_exynos_remove_child);  in dwc3_exynos_remove()
147 	for (i = exynos->num_clks - 1; i >= 0; i--)  in dwc3_exynos_remove()
148 		clk_disable_unprepare(exynos->clks[i]);  in dwc3_exynos_remove()
150 	if (exynos->suspend_clk_idx >= 0)  in dwc3_exynos_remove()
151 		clk_disable_unprepare(exynos->clks[exynos->suspend_clk_idx]);  in dwc3_exynos_remove()
153 	regulator_disable(exynos->vdd33);  in dwc3_exynos_remove()
154 	regulator_disable(exynos->vdd10);  in dwc3_exynos_remove()
162 	.suspend_clk_idx = -1,
179 		.compatible = "samsung,exynos5250-dwusb3",
182 		.compatible = "samsung,exynos5433-dwusb3",
185 		.compatible = "samsung,exynos7-dwusb3",
198 	for (i = exynos->num_clks - 1; i >= 0; i--)  in dwc3_exynos_suspend()
199 		clk_disable_unprepare(exynos->clks[i]);  in dwc3_exynos_suspend()
201 	regulator_disable(exynos->vdd33);  in dwc3_exynos_suspend()
202 	regulator_disable(exynos->vdd10);  in dwc3_exynos_suspend()
212 	ret = regulator_enable(exynos->vdd33);  in dwc3_exynos_resume()
214 		dev_err(dev, "Failed to enable VDD33 supply\n");  in dwc3_exynos_resume()
217 	ret = regulator_enable(exynos->vdd10);  in dwc3_exynos_resume()
219 		dev_err(dev, "Failed to enable VDD10 supply\n");  in dwc3_exynos_resume()
223 	for (i = 0; i < exynos->num_clks; i++) {  in dwc3_exynos_resume()
224 		ret = clk_prepare_enable(exynos->clks[i]);  in dwc3_exynos_resume()
226 			while (i-- > 0)  in dwc3_exynos_resume()
227 				clk_disable_unprepare(exynos->clks[i]);  in dwc3_exynos_resume()
248 		.name	= "exynos-dwc3",