38  * @sw: USB role switch
41  * Set USB role @role for @sw.
43 int usb_role_switch_set_role(struct usb_role_switch *sw, enum usb_role role)  in usb_role_switch_set_role()  argument
47 	if (IS_ERR_OR_NULL(sw))  in usb_role_switch_set_role()
50 	mutex_lock(&sw->lock);  in usb_role_switch_set_role()
52 	ret = sw->set(sw, role);  in usb_role_switch_set_role()
54 		sw->role = role;  in usb_role_switch_set_role()
55 		kobject_uevent(&sw->dev.kobj, KOBJ_CHANGE);  in usb_role_switch_set_role()
58 	mutex_unlock(&sw->lock);  in usb_role_switch_set_role()
66  * @sw: USB role switch
71 enum usb_role usb_role_switch_get_role(struct usb_role_switch *sw)  in usb_role_switch_get_role()  argument
75 	if (IS_ERR_OR_NULL(sw))  in usb_role_switch_get_role()
78 	mutex_lock(&sw->lock);  in usb_role_switch_get_role()
80 	if (sw->get)  in usb_role_switch_get_role()
81 		role = sw->get(sw);  in usb_role_switch_get_role()
83 		role = sw->role;  in usb_role_switch_get_role()
85 	mutex_unlock(&sw->lock);  in usb_role_switch_get_role()
129 	struct usb_role_switch *sw;  in usb_role_switch_get()  local
131 	sw = usb_role_switch_is_parent(dev_fwnode(dev));  in usb_role_switch_get()
132 	if (!sw)  in usb_role_switch_get()
133 		sw = device_connection_find_match(dev, "usb-role-switch", NULL,  in usb_role_switch_get()
136 	if (!IS_ERR_OR_NULL(sw))  in usb_role_switch_get()
137 		WARN_ON(!try_module_get(sw->module));  in usb_role_switch_get()
139 	return sw;  in usb_role_switch_get()
152 	struct usb_role_switch *sw;  in fwnode_usb_role_switch_get()  local
154 	sw = usb_role_switch_is_parent(fwnode);  in fwnode_usb_role_switch_get()
155 	if (!sw)  in fwnode_usb_role_switch_get()
156 		sw = fwnode_connection_find_match(fwnode, "usb-role-switch",  in fwnode_usb_role_switch_get()
158 	if (!IS_ERR_OR_NULL(sw))  in fwnode_usb_role_switch_get()
159 		WARN_ON(!try_module_get(sw->module));  in fwnode_usb_role_switch_get()
161 	return sw;  in fwnode_usb_role_switch_get()
167  * @sw: USB Role Switch
169  * Decrement reference count for @sw.
171 void usb_role_switch_put(struct usb_role_switch *sw)  in usb_role_switch_put()  argument
173 	if (!IS_ERR_OR_NULL(sw)) {  in usb_role_switch_put()
174 		module_put(sw->module);  in usb_role_switch_put()
175 		put_device(&sw->dev);  in usb_role_switch_put()
191 	struct usb_role_switch *sw = NULL;  in usb_role_switch_find_by_fwnode()  local
198 		sw = to_role_switch(dev);  in usb_role_switch_find_by_fwnode()
199 		WARN_ON(!try_module_get(sw->module));  in usb_role_switch_find_by_fwnode()
202 	return sw;  in usb_role_switch_find_by_fwnode()
210 	struct usb_role_switch *sw = to_role_switch(dev);  in usb_role_switch_is_visible()  local
212 	if (sw->allow_userspace_control)  in usb_role_switch_is_visible()
227 	struct usb_role_switch *sw = to_role_switch(dev);  in role_show()  local
228 	enum usb_role role = usb_role_switch_get_role(sw);  in role_show()
236 	struct usb_role_switch *sw = to_role_switch(dev);  in role_store()  local
249 	ret = usb_role_switch_set_role(sw, ret);  in role_store()
286 	struct usb_role_switch *sw = to_role_switch(dev);  in usb_role_switch_release()  local
288 	kfree(sw);  in usb_role_switch_release()
316 	struct usb_role_switch *sw;  in usb_role_switch_register()  local
322 	sw = kzalloc(sizeof(*sw), GFP_KERNEL);  in usb_role_switch_register()
323 	if (!sw)  in usb_role_switch_register()
326 	mutex_init(&sw->lock);  in usb_role_switch_register()
328 	sw->allow_userspace_control = desc->allow_userspace_control;  in usb_role_switch_register()
329 	sw->usb2_port = desc->usb2_port;  in usb_role_switch_register()
330 	sw->usb3_port = desc->usb3_port;  in usb_role_switch_register()
331 	sw->udc = desc->udc;  in usb_role_switch_register()
332 	sw->set = desc->set;  in usb_role_switch_register()
333 	sw->get = desc->get;  in usb_role_switch_register()
335 	sw->module = parent->driver->owner;  in usb_role_switch_register()
336 	sw->dev.parent = parent;  in usb_role_switch_register()
337 	sw->dev.fwnode = desc->fwnode;  in usb_role_switch_register()
338 	sw->dev.class = role_class;  in usb_role_switch_register()
339 	sw->dev.type = &usb_role_dev_type;  in usb_role_switch_register()
340 	dev_set_drvdata(&sw->dev, desc->driver_data);  in usb_role_switch_register()
341 	dev_set_name(&sw->dev, "%s-role-switch",  in usb_role_switch_register()
344 	ret = device_register(&sw->dev);  in usb_role_switch_register()
346 		put_device(&sw->dev);  in usb_role_switch_register()
352 	return sw;  in usb_role_switch_register()
358  * @sw: USB Role Switch
362 void usb_role_switch_unregister(struct usb_role_switch *sw)  in usb_role_switch_unregister()  argument
364 	if (!IS_ERR_OR_NULL(sw))  in usb_role_switch_unregister()
365 		device_unregister(&sw->dev);  in usb_role_switch_unregister()
371  * @sw: USB Role Switch
374 void usb_role_switch_set_drvdata(struct usb_role_switch *sw, void *data)  in usb_role_switch_set_drvdata()  argument
376 	dev_set_drvdata(&sw->dev, data);  in usb_role_switch_set_drvdata()
382  * @sw: USB Role Switch
384 void *usb_role_switch_get_drvdata(struct usb_role_switch *sw)  in usb_role_switch_get_drvdata()  argument
386 	return dev_get_drvdata(&sw->dev);  in usb_role_switch_get_drvdata()