1 // SPDX-License-Identifier: GPL-2.0+
4  * multiple (actual) PHY devices. This is comes handy when initializing
10 #include <linux/device.h>
12 #include <linux/phy/phy.h>
15 #include "phy.h"
18 	struct phy		*phy;  member
22 static int usb_phy_roothub_add_phy(struct device *dev, int index,  in usb_phy_roothub_add_phy()
26 	struct phy *phy;  in usb_phy_roothub_add_phy()  local
28 	phy = devm_of_phy_get_by_index(dev, dev->of_node, index);  in usb_phy_roothub_add_phy()
29 	if (IS_ERR(phy)) {  in usb_phy_roothub_add_phy()
30 		if (PTR_ERR(phy) == -ENODEV)  in usb_phy_roothub_add_phy()
33 			return PTR_ERR(phy);  in usb_phy_roothub_add_phy()
38 		return -ENOMEM;  in usb_phy_roothub_add_phy()
40 	INIT_LIST_HEAD(&roothub_entry->list);  in usb_phy_roothub_add_phy()
42 	roothub_entry->phy = phy;  in usb_phy_roothub_add_phy()
44 	list_add_tail(&roothub_entry->list, list);  in usb_phy_roothub_add_phy()
49 struct usb_phy_roothub *usb_phy_roothub_alloc(struct device *dev)  in usb_phy_roothub_alloc()
57 	num_phys = of_count_phandle_with_args(dev->of_node, "phys",  in usb_phy_roothub_alloc()
58 					      "#phy-cells");  in usb_phy_roothub_alloc()
64 		return ERR_PTR(-ENOMEM);  in usb_phy_roothub_alloc()
66 	INIT_LIST_HEAD(&phy_roothub->list);  in usb_phy_roothub_alloc()
69 		err = usb_phy_roothub_add_phy(dev, i, &phy_roothub->list);  in usb_phy_roothub_alloc()
87 	head = &phy_roothub->list;  in usb_phy_roothub_init()
90 		err = phy_init(roothub_entry->phy);  in usb_phy_roothub_init()
99 		phy_exit(roothub_entry->phy);  in usb_phy_roothub_init()
114 	head = &phy_roothub->list;  in usb_phy_roothub_exit()
117 		err = phy_exit(roothub_entry->phy);  in usb_phy_roothub_exit()
136 	head = &phy_roothub->list;  in usb_phy_roothub_set_mode()
139 		err = phy_set_mode(roothub_entry->phy, mode);  in usb_phy_roothub_set_mode()
148 		phy_power_off(roothub_entry->phy);  in usb_phy_roothub_set_mode()
163 	head = &phy_roothub->list;  in usb_phy_roothub_calibrate()
166 		err = phy_calibrate(roothub_entry->phy);  in usb_phy_roothub_calibrate()
184 	head = &phy_roothub->list;  in usb_phy_roothub_power_on()
187 		err = phy_power_on(roothub_entry->phy);  in usb_phy_roothub_power_on()
196 		phy_power_off(roothub_entry->phy);  in usb_phy_roothub_power_on()
209 	list_for_each_entry_reverse(roothub_entry, &phy_roothub->list, list)  in usb_phy_roothub_power_off()
210 		phy_power_off(roothub_entry->phy);  in usb_phy_roothub_power_off()
214 int usb_phy_roothub_suspend(struct device *controller_dev,  in usb_phy_roothub_suspend()
219 	/* keep the PHYs initialized so the device can wake up the system */  in usb_phy_roothub_suspend()
227 int usb_phy_roothub_resume(struct device *controller_dev,  in usb_phy_roothub_resume()
232 	/* if the device can't wake up the system _exit was called */  in usb_phy_roothub_resume()