usb/core/of.c

1 // SPDX-License-Identifier: GPL-2.0
11 #include <linux/usb/of.h>
14  * usb_of_get_device_node() - get a USB device node
15  * @hub: hub to which device is connected
16  * @port1: one-based index of port
18  * Look up the node of a USB device given its parent hub device and one-based
24 struct device_node *usb_of_get_device_node(struct usb_device *hub, int port1)  in usb_of_get_device_node()  argument
29 	for_each_child_of_node(hub->dev.of_node, node) {  in usb_of_get_device_node()
42  * usb_of_has_combined_node() - determine whether a device has a combined node
43  * @udev: USB device
45  * Determine whether a USB device has a so called combined node which is
58 	struct usb_device_descriptor *ddesc = &udev->descriptor;  in usb_of_has_combined_node()
61 	if (!udev->dev.of_node)  in usb_of_has_combined_node()
64 	switch (ddesc->bDeviceClass) {  in usb_of_has_combined_node()
67 		if (ddesc->bNumConfigurations == 1) {  in usb_of_has_combined_node()
68 			cdesc = &udev->config->desc;  in usb_of_has_combined_node()
69 			if (cdesc->bNumInterfaces == 1)  in usb_of_has_combined_node()
79  * usb_of_get_interface_node() - get a USB interface node
80  * @udev: USB device of interface
84  * Look up the node of a USB interface given its USB device, configuration
96 	for_each_child_of_node(udev->dev.of_node, node) {  in usb_of_get_interface_node()