36  * @sw: USB role switch
39  * Set USB role @role for @sw.
41 int usb_role_switch_set_role(struct usb_role_switch *sw, enum usb_role role)  in usb_role_switch_set_role()  argument
45 	if (IS_ERR_OR_NULL(sw))  in usb_role_switch_set_role()
48 	mutex_lock(&sw->lock);  in usb_role_switch_set_role()
50 	ret = sw->set(sw->dev.parent, role);  in usb_role_switch_set_role()
52 		sw->role = role;  in usb_role_switch_set_role()
54 	mutex_unlock(&sw->lock);  in usb_role_switch_set_role()
62  * @sw: USB role switch
67 enum usb_role usb_role_switch_get_role(struct usb_role_switch *sw)  in usb_role_switch_get_role()  argument
71 	if (IS_ERR_OR_NULL(sw))  in usb_role_switch_get_role()
74 	mutex_lock(&sw->lock);  in usb_role_switch_get_role()
76 	if (sw->get)  in usb_role_switch_get_role()
77 		role = sw->get(sw->dev.parent);  in usb_role_switch_get_role()
79 		role = sw->role;  in usb_role_switch_get_role()
81 	mutex_unlock(&sw->lock);  in usb_role_switch_get_role()
112 	struct usb_role_switch *sw;  in usb_role_switch_get()  local
114 	sw = device_connection_find_match(dev, "usb-role-switch", NULL,  in usb_role_switch_get()
117 	if (!IS_ERR_OR_NULL(sw))  in usb_role_switch_get()
118 		WARN_ON(!try_module_get(sw->dev.parent->driver->owner));  in usb_role_switch_get()
120 	return sw;  in usb_role_switch_get()
126  * @sw: USB Role Switch
128  * Decrement reference count for @sw.
130 void usb_role_switch_put(struct usb_role_switch *sw)  in usb_role_switch_put()  argument
132 	if (!IS_ERR_OR_NULL(sw)) {  in usb_role_switch_put()
133 		module_put(sw->dev.parent->driver->owner);  in usb_role_switch_put()
134 		put_device(&sw->dev);  in usb_role_switch_put()
143 	struct usb_role_switch *sw = to_role_switch(dev);  in usb_role_switch_is_visible()  local
145 	if (sw->allow_userspace_control)  in usb_role_switch_is_visible()
160 	struct usb_role_switch *sw = to_role_switch(dev);  in role_show()  local
161 	enum usb_role role = usb_role_switch_get_role(sw);  in role_show()
169 	struct usb_role_switch *sw = to_role_switch(dev);  in role_store()  local
182 	ret = usb_role_switch_set_role(sw, ret);  in role_store()
219 	struct usb_role_switch *sw = to_role_switch(dev);  in usb_role_switch_release()  local
221 	kfree(sw);  in usb_role_switch_release()
249 	struct usb_role_switch *sw;  in usb_role_switch_register()  local
255 	sw = kzalloc(sizeof(*sw), GFP_KERNEL);  in usb_role_switch_register()
256 	if (!sw)  in usb_role_switch_register()
259 	mutex_init(&sw->lock);  in usb_role_switch_register()
261 	sw->allow_userspace_control = desc->allow_userspace_control;  in usb_role_switch_register()
262 	sw->usb2_port = desc->usb2_port;  in usb_role_switch_register()
263 	sw->usb3_port = desc->usb3_port;  in usb_role_switch_register()
264 	sw->udc = desc->udc;  in usb_role_switch_register()
265 	sw->set = desc->set;  in usb_role_switch_register()
266 	sw->get = desc->get;  in usb_role_switch_register()
268 	sw->dev.parent = parent;  in usb_role_switch_register()
269 	sw->dev.class = role_class;  in usb_role_switch_register()
270 	sw->dev.type = &usb_role_dev_type;  in usb_role_switch_register()
271 	dev_set_name(&sw->dev, "%s-role-switch", dev_name(parent));  in usb_role_switch_register()
273 	ret = device_register(&sw->dev);  in usb_role_switch_register()
275 		put_device(&sw->dev);  in usb_role_switch_register()
281 	return sw;  in usb_role_switch_register()
287  * @sw: USB Role Switch
291 void usb_role_switch_unregister(struct usb_role_switch *sw)  in usb_role_switch_unregister()  argument
293 	if (!IS_ERR_OR_NULL(sw))  in usb_role_switch_unregister()
294 		device_unregister(&sw->dev);  in usb_role_switch_unregister()