41  * @sw: USB role switch
44  * Set USB role @role for @sw.
46 int usb_role_switch_set_role(struct usb_role_switch *sw, enum usb_role role)  in usb_role_switch_set_role()  argument
50 	if (IS_ERR_OR_NULL(sw))  in usb_role_switch_set_role()
53 	if (!sw->registered)  in usb_role_switch_set_role()
56 	mutex_lock(&sw->lock);  in usb_role_switch_set_role()
58 	ret = sw->set(sw, role);  in usb_role_switch_set_role()
60 		sw->role = role;  in usb_role_switch_set_role()
61 		kobject_uevent(&sw->dev.kobj, KOBJ_CHANGE);  in usb_role_switch_set_role()
64 	mutex_unlock(&sw->lock);  in usb_role_switch_set_role()
72  * @sw: USB role switch
77 enum usb_role usb_role_switch_get_role(struct usb_role_switch *sw)  in usb_role_switch_get_role()  argument
81 	if (IS_ERR_OR_NULL(sw) || !sw->registered)  in usb_role_switch_get_role()
84 	mutex_lock(&sw->lock);  in usb_role_switch_get_role()
86 	if (sw->get)  in usb_role_switch_get_role()
87 		role = sw->get(sw);  in usb_role_switch_get_role()
89 		role = sw->role;  in usb_role_switch_get_role()
91 	mutex_unlock(&sw->lock);  in usb_role_switch_get_role()
135 	struct usb_role_switch *sw;  in usb_role_switch_get()  local
137 	sw = usb_role_switch_is_parent(dev_fwnode(dev));  in usb_role_switch_get()
138 	if (!sw)  in usb_role_switch_get()
139 		sw = device_connection_find_match(dev, "usb-role-switch", NULL,  in usb_role_switch_get()
142 	if (!IS_ERR_OR_NULL(sw))  in usb_role_switch_get()
143 		WARN_ON(!try_module_get(sw->module));  in usb_role_switch_get()
145 	return sw;  in usb_role_switch_get()
158 	struct usb_role_switch *sw;  in fwnode_usb_role_switch_get()  local
160 	sw = usb_role_switch_is_parent(fwnode);  in fwnode_usb_role_switch_get()
161 	if (!sw)  in fwnode_usb_role_switch_get()
162 		sw = fwnode_connection_find_match(fwnode, "usb-role-switch",  in fwnode_usb_role_switch_get()
164 	if (!IS_ERR_OR_NULL(sw))  in fwnode_usb_role_switch_get()
165 		WARN_ON(!try_module_get(sw->module));  in fwnode_usb_role_switch_get()
167 	return sw;  in fwnode_usb_role_switch_get()
173  * @sw: USB Role Switch
175  * Decrement reference count for @sw.
177 void usb_role_switch_put(struct usb_role_switch *sw)  in usb_role_switch_put()  argument
179 	if (!IS_ERR_OR_NULL(sw)) {  in usb_role_switch_put()
180 		module_put(sw->module);  in usb_role_switch_put()
181 		put_device(&sw->dev);  in usb_role_switch_put()
197 	struct usb_role_switch *sw = NULL;  in usb_role_switch_find_by_fwnode()  local
204 		sw = to_role_switch(dev);  in usb_role_switch_find_by_fwnode()
205 		WARN_ON(!try_module_get(sw->module));  in usb_role_switch_find_by_fwnode()
208 	return sw;  in usb_role_switch_find_by_fwnode()
216 	struct usb_role_switch *sw = to_role_switch(dev);  in usb_role_switch_is_visible()  local
218 	if (sw->allow_userspace_control)  in usb_role_switch_is_visible()
242 	struct usb_role_switch *sw = to_role_switch(dev);  in role_show()  local
243 	enum usb_role role = usb_role_switch_get_role(sw);  in role_show()
251 	struct usb_role_switch *sw = to_role_switch(dev);  in role_store()  local
264 	ret = usb_role_switch_set_role(sw, ret);  in role_store()
300 	struct usb_role_switch *sw = to_role_switch(dev);  in usb_role_switch_release()  local
302 	kfree(sw);  in usb_role_switch_release()
330 	struct usb_role_switch *sw;  in usb_role_switch_register()  local
336 	sw = kzalloc(sizeof(*sw), GFP_KERNEL);  in usb_role_switch_register()
337 	if (!sw)  in usb_role_switch_register()
340 	mutex_init(&sw->lock);  in usb_role_switch_register()
342 	sw->allow_userspace_control = desc->allow_userspace_control;  in usb_role_switch_register()
343 	sw->usb2_port = desc->usb2_port;  in usb_role_switch_register()
344 	sw->usb3_port = desc->usb3_port;  in usb_role_switch_register()
345 	sw->udc = desc->udc;  in usb_role_switch_register()
346 	sw->set = desc->set;  in usb_role_switch_register()
347 	sw->get = desc->get;  in usb_role_switch_register()
349 	sw->module = parent->driver->owner;  in usb_role_switch_register()
350 	sw->dev.parent = parent;  in usb_role_switch_register()
351 	sw->dev.fwnode = desc->fwnode;  in usb_role_switch_register()
352 	sw->dev.class = &role_class;  in usb_role_switch_register()
353 	sw->dev.type = &usb_role_dev_type;  in usb_role_switch_register()
354 	dev_set_drvdata(&sw->dev, desc->driver_data);  in usb_role_switch_register()
355 	dev_set_name(&sw->dev, "%s-role-switch",  in usb_role_switch_register()
358 	ret = device_register(&sw->dev);  in usb_role_switch_register()
360 		put_device(&sw->dev);  in usb_role_switch_register()
364 	sw->registered = true;  in usb_role_switch_register()
368 	return sw;  in usb_role_switch_register()
374  * @sw: USB Role Switch
378 void usb_role_switch_unregister(struct usb_role_switch *sw)  in usb_role_switch_unregister()  argument
380 	if (!IS_ERR_OR_NULL(sw)) {  in usb_role_switch_unregister()
381 		sw->registered = false;  in usb_role_switch_unregister()
382 		device_unregister(&sw->dev);  in usb_role_switch_unregister()
389  * @sw: USB Role Switch
392 void usb_role_switch_set_drvdata(struct usb_role_switch *sw, void *data)  in usb_role_switch_set_drvdata()  argument
394 	dev_set_drvdata(&sw->dev, data);  in usb_role_switch_set_drvdata()
400  * @sw: USB Role Switch
402 void *usb_role_switch_get_drvdata(struct usb_role_switch *sw)  in usb_role_switch_get_drvdata()  argument
404 	return dev_get_drvdata(&sw->dev);  in usb_role_switch_get_drvdata()