1 // SPDX-License-Identifier: GPL-2.0-only
6 #include <linux/ulpi/driver.h>
7 #include <linux/ulpi/regs.h>
16 #define ULPI_PWR_CLK_MNG_REG		0x88
17 # define ULPI_PWR_OTG_COMP_DISABLE	BIT(0)
19 #define ULPI_MISC_A			0x96
21 # define ULPI_MISC_A_VBUSVLDEXT		BIT(0)
30 	struct ulpi *ulpi;  member
49 	if (!uphy->vbus_edev) {  in qcom_usb_hs_phy_set_mode()
50 		u8 val = 0;  in qcom_usb_hs_phy_set_mode()
63 		ret = ulpi_write(uphy->ulpi, ULPI_USB_INT_EN_RISE, val);  in qcom_usb_hs_phy_set_mode()
66 		ret = ulpi_write(uphy->ulpi, ULPI_USB_INT_EN_FALL, val);  in qcom_usb_hs_phy_set_mode()
77 			return -EINVAL;  in qcom_usb_hs_phy_set_mode()
80 		ret = ulpi_write(uphy->ulpi, ULPI_SET(ULPI_PWR_CLK_MNG_REG),  in qcom_usb_hs_phy_set_mode()
84 		ret = ulpi_write(uphy->ulpi, addr, ULPI_MISC_A_VBUSVLDEXTSEL);  in qcom_usb_hs_phy_set_mode()
104 	return ulpi_write(uphy->ulpi, addr, ULPI_MISC_A_VBUSVLDEXT);  in qcom_usb_hs_phy_vbus_notifier()
110 	struct ulpi *ulpi = uphy->ulpi;  in qcom_usb_hs_phy_power_on()  local
114 	ret = clk_prepare_enable(uphy->ref_clk);  in qcom_usb_hs_phy_power_on()
118 	ret = clk_prepare_enable(uphy->sleep_clk);  in qcom_usb_hs_phy_power_on()
122 	ret = regulator_set_load(uphy->v1p8, 50000);  in qcom_usb_hs_phy_power_on()
123 	if (ret < 0)  in qcom_usb_hs_phy_power_on()
126 	ret = regulator_enable(uphy->v1p8);  in qcom_usb_hs_phy_power_on()
130 	ret = regulator_set_voltage_triplet(uphy->v3p3, 3050000, 3300000,  in qcom_usb_hs_phy_power_on()
135 	ret = regulator_set_load(uphy->v3p3, 50000);  in qcom_usb_hs_phy_power_on()
136 	if (ret < 0)  in qcom_usb_hs_phy_power_on()
139 	ret = regulator_enable(uphy->v3p3);  in qcom_usb_hs_phy_power_on()
143 	for (seq = uphy->init_seq; seq->addr; seq++) {  in qcom_usb_hs_phy_power_on()
144 		ret = ulpi_write(ulpi, ULPI_EXT_VENDOR_SPECIFIC + seq->addr,  in qcom_usb_hs_phy_power_on()
145 				 seq->val);  in qcom_usb_hs_phy_power_on()
150 	if (uphy->reset) {  in qcom_usb_hs_phy_power_on()
151 		ret = reset_control_reset(uphy->reset);  in qcom_usb_hs_phy_power_on()
156 	if (uphy->vbus_edev) {  in qcom_usb_hs_phy_power_on()
157 		state = extcon_get_state(uphy->vbus_edev, EXTCON_USB);  in qcom_usb_hs_phy_power_on()
159 		qcom_usb_hs_phy_vbus_notifier(&uphy->vbus_notify, state,  in qcom_usb_hs_phy_power_on()
160 					      uphy->vbus_edev);  in qcom_usb_hs_phy_power_on()
161 		ret = extcon_register_notifier(uphy->vbus_edev, EXTCON_USB,  in qcom_usb_hs_phy_power_on()
162 					       &uphy->vbus_notify);  in qcom_usb_hs_phy_power_on()
167 	return 0;  in qcom_usb_hs_phy_power_on()
169 	regulator_disable(uphy->v3p3);  in qcom_usb_hs_phy_power_on()
171 	regulator_disable(uphy->v1p8);  in qcom_usb_hs_phy_power_on()
173 	clk_disable_unprepare(uphy->sleep_clk);  in qcom_usb_hs_phy_power_on()
175 	clk_disable_unprepare(uphy->ref_clk);  in qcom_usb_hs_phy_power_on()
183 	if (uphy->vbus_edev)  in qcom_usb_hs_phy_power_off()
184 		extcon_unregister_notifier(uphy->vbus_edev, EXTCON_USB,  in qcom_usb_hs_phy_power_off()
185 					   &uphy->vbus_notify);  in qcom_usb_hs_phy_power_off()
186 	regulator_disable(uphy->v3p3);  in qcom_usb_hs_phy_power_off()
187 	regulator_disable(uphy->v1p8);  in qcom_usb_hs_phy_power_off()
188 	clk_disable_unprepare(uphy->sleep_clk);  in qcom_usb_hs_phy_power_off()
189 	clk_disable_unprepare(uphy->ref_clk);  in qcom_usb_hs_phy_power_off()
191 	return 0;  in qcom_usb_hs_phy_power_off()
201 static int qcom_usb_hs_phy_probe(struct ulpi *ulpi)  in qcom_usb_hs_phy_probe()  argument
211 	uphy = devm_kzalloc(&ulpi->dev, sizeof(*uphy), GFP_KERNEL);  in qcom_usb_hs_phy_probe()
213 		return -ENOMEM;  in qcom_usb_hs_phy_probe()
214 	ulpi_set_drvdata(ulpi, uphy);  in qcom_usb_hs_phy_probe()
215 	uphy->ulpi = ulpi;  in qcom_usb_hs_phy_probe()
217 	size = of_property_count_u8_elems(ulpi->dev.of_node, "qcom,init-seq");  in qcom_usb_hs_phy_probe()
218 	if (size < 0)  in qcom_usb_hs_phy_probe()
219 		size = 0;  in qcom_usb_hs_phy_probe()
220 	uphy->init_seq = devm_kmalloc_array(&ulpi->dev, (size / 2) + 1,  in qcom_usb_hs_phy_probe()
221 					   sizeof(*uphy->init_seq), GFP_KERNEL);  in qcom_usb_hs_phy_probe()
222 	if (!uphy->init_seq)  in qcom_usb_hs_phy_probe()
223 		return -ENOMEM;  in qcom_usb_hs_phy_probe()
224 	ret = of_property_read_u8_array(ulpi->dev.of_node, "qcom,init-seq",  in qcom_usb_hs_phy_probe()
225 					(u8 *)uphy->init_seq, size);  in qcom_usb_hs_phy_probe()
229 	uphy->init_seq[size / 2].addr = uphy->init_seq[size / 2].val = 0;  in qcom_usb_hs_phy_probe()
231 	uphy->ref_clk = clk = devm_clk_get(&ulpi->dev, "ref");  in qcom_usb_hs_phy_probe()
235 	uphy->sleep_clk = clk = devm_clk_get(&ulpi->dev, "sleep");  in qcom_usb_hs_phy_probe()
239 	uphy->v1p8 = reg = devm_regulator_get(&ulpi->dev, "v1p8");  in qcom_usb_hs_phy_probe()
243 	uphy->v3p3 = reg = devm_regulator_get(&ulpi->dev, "v3p3");  in qcom_usb_hs_phy_probe()
247 	uphy->reset = reset = devm_reset_control_get(&ulpi->dev, "por");  in qcom_usb_hs_phy_probe()
249 		if (PTR_ERR(reset) == -EPROBE_DEFER)  in qcom_usb_hs_phy_probe()
251 		uphy->reset = NULL;  in qcom_usb_hs_phy_probe()
254 	uphy->phy = devm_phy_create(&ulpi->dev, ulpi->dev.of_node,  in qcom_usb_hs_phy_probe()
256 	if (IS_ERR(uphy->phy))  in qcom_usb_hs_phy_probe()
257 		return PTR_ERR(uphy->phy);  in qcom_usb_hs_phy_probe()
259 	uphy->vbus_edev = extcon_get_edev_by_phandle(&ulpi->dev, 0);  in qcom_usb_hs_phy_probe()
260 	if (IS_ERR(uphy->vbus_edev)) {  in qcom_usb_hs_phy_probe()
261 		if (PTR_ERR(uphy->vbus_edev) != -ENODEV)  in qcom_usb_hs_phy_probe()
262 			return PTR_ERR(uphy->vbus_edev);  in qcom_usb_hs_phy_probe()
263 		uphy->vbus_edev = NULL;  in qcom_usb_hs_phy_probe()
266 	uphy->vbus_notify.notifier_call = qcom_usb_hs_phy_vbus_notifier;  in qcom_usb_hs_phy_probe()
267 	phy_set_drvdata(uphy->phy, uphy);  in qcom_usb_hs_phy_probe()
269 	p = devm_of_phy_provider_register(&ulpi->dev, of_phy_simple_xlate);  in qcom_usb_hs_phy_probe()
274 	{ .compatible = "qcom,usb-hs-phy", },