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 /* Allocate the roothub_entry by specific name of phy */
23 static int usb_phy_roothub_add_phy_by_name(struct device *dev, const char *name,  in usb_phy_roothub_add_phy_by_name()
27 	struct phy *phy;  in usb_phy_roothub_add_phy_by_name()  local
29 	phy = devm_of_phy_get(dev, dev->of_node, name);  in usb_phy_roothub_add_phy_by_name()
30 	if (IS_ERR(phy))  in usb_phy_roothub_add_phy_by_name()
31 		return PTR_ERR(phy);  in usb_phy_roothub_add_phy_by_name()
35 		return -ENOMEM;  in usb_phy_roothub_add_phy_by_name()
37 	INIT_LIST_HEAD(&roothub_entry->list);  in usb_phy_roothub_add_phy_by_name()
39 	roothub_entry->phy = phy;  in usb_phy_roothub_add_phy_by_name()
41 	list_add_tail(&roothub_entry->list, list);  in usb_phy_roothub_add_phy_by_name()
46 static int usb_phy_roothub_add_phy(struct device *dev, int index,  in usb_phy_roothub_add_phy()
50 	struct phy *phy;  in usb_phy_roothub_add_phy()  local
52 	phy = devm_of_phy_get_by_index(dev, dev->of_node, index);  in usb_phy_roothub_add_phy()
53 	if (IS_ERR(phy)) {  in usb_phy_roothub_add_phy()
54 		if (PTR_ERR(phy) == -ENODEV)  in usb_phy_roothub_add_phy()
57 			return PTR_ERR(phy);  in usb_phy_roothub_add_phy()
62 		return -ENOMEM;  in usb_phy_roothub_add_phy()
64 	INIT_LIST_HEAD(&roothub_entry->list);  in usb_phy_roothub_add_phy()
66 	roothub_entry->phy = phy;  in usb_phy_roothub_add_phy()
68 	list_add_tail(&roothub_entry->list, list);  in usb_phy_roothub_add_phy()
73 struct usb_phy_roothub *usb_phy_roothub_alloc(struct device *dev)  in usb_phy_roothub_alloc()
81 	num_phys = of_count_phandle_with_args(dev->of_node, "phys",  in usb_phy_roothub_alloc()
82 					      "#phy-cells");  in usb_phy_roothub_alloc()
88 		return ERR_PTR(-ENOMEM);  in usb_phy_roothub_alloc()
90 	INIT_LIST_HEAD(&phy_roothub->list);  in usb_phy_roothub_alloc()
92 	if (!usb_phy_roothub_add_phy_by_name(dev, "usb2-phy", &phy_roothub->list))  in usb_phy_roothub_alloc()
96 		err = usb_phy_roothub_add_phy(dev, i, &phy_roothub->list);  in usb_phy_roothub_alloc()
106  * usb_phy_roothub_alloc_usb3_phy - alloc the roothub
107  * @dev: the device of the host controller
109  * Allocate the usb phy roothub if the host use a generic usb3-phy.
112  * %NULL if no use usb3 phy or %-ENOMEM if out of memory.
114 struct usb_phy_roothub *usb_phy_roothub_alloc_usb3_phy(struct device *dev)  in usb_phy_roothub_alloc_usb3_phy()
122 	num_phys = of_count_phandle_with_args(dev->of_node, "phys",  in usb_phy_roothub_alloc_usb3_phy()
123 					      "#phy-cells");  in usb_phy_roothub_alloc_usb3_phy()
129 		return ERR_PTR(-ENOMEM);  in usb_phy_roothub_alloc_usb3_phy()
131 	INIT_LIST_HEAD(&phy_roothub->list);  in usb_phy_roothub_alloc_usb3_phy()
133 	if (!usb_phy_roothub_add_phy_by_name(dev, "usb3-phy", &phy_roothub->list))  in usb_phy_roothub_alloc_usb3_phy()
149 	head = &phy_roothub->list;  in usb_phy_roothub_init()
152 		err = phy_init(roothub_entry->phy);  in usb_phy_roothub_init()
161 		phy_exit(roothub_entry->phy);  in usb_phy_roothub_init()
176 	head = &phy_roothub->list;  in usb_phy_roothub_exit()
179 		err = phy_exit(roothub_entry->phy);  in usb_phy_roothub_exit()
198 	head = &phy_roothub->list;  in usb_phy_roothub_set_mode()
201 		err = phy_set_mode(roothub_entry->phy, mode);  in usb_phy_roothub_set_mode()
210 		phy_power_off(roothub_entry->phy);  in usb_phy_roothub_set_mode()
225 	head = &phy_roothub->list;  in usb_phy_roothub_calibrate()
228 		err = phy_calibrate(roothub_entry->phy);  in usb_phy_roothub_calibrate()
238  * usb_phy_roothub_notify_connect() - connect notification
239  * @phy_roothub: the phy of roothub, if the host use a generic phy.
242  * If the phy needs to get connection status, the callback can be used.
254 	head = &phy_roothub->list;  in usb_phy_roothub_notify_connect()
257 		err = phy_notify_connect(roothub_entry->phy, port);  in usb_phy_roothub_notify_connect()
267  * usb_phy_roothub_notify_disconnect() - disconnect notification
268  * @phy_roothub: the phy of roothub, if the host use a generic phy.
271  * If the phy needs to get connection status, the callback can be used.
283 	head = &phy_roothub->list;  in usb_phy_roothub_notify_disconnect()
286 		err = phy_notify_disconnect(roothub_entry->phy, port);  in usb_phy_roothub_notify_disconnect()
304 	head = &phy_roothub->list;  in usb_phy_roothub_power_on()
307 		err = phy_power_on(roothub_entry->phy);  in usb_phy_roothub_power_on()
316 		phy_power_off(roothub_entry->phy);  in usb_phy_roothub_power_on()
329 	list_for_each_entry_reverse(roothub_entry, &phy_roothub->list, list)  in usb_phy_roothub_power_off()
330 		phy_power_off(roothub_entry->phy);  in usb_phy_roothub_power_off()
334 int usb_phy_roothub_suspend(struct device *controller_dev,  in usb_phy_roothub_suspend()
339 	/* keep the PHYs initialized so the device can wake up the system */  in usb_phy_roothub_suspend()
347 int usb_phy_roothub_resume(struct device *controller_dev,  in usb_phy_roothub_resume()
352 	/* if the device can't wake up the system _exit was called */  in usb_phy_roothub_resume()