/* * of.c The helpers for hcd device tree support * * Copyright (C) 2016 Freescale Semiconductor, Inc. * Author: Peter Chen <peter.chen@freescale.com> * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 of * the License as published by the Free Software Foundation. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program. If not, see <http://www.gnu.org/licenses/>. */ #include <linux/of.h> /** * usb_of_get_child_node - Find the device node match port number * @parent: the parent device node * @portnum: the port number which device is connecting * * Find the node from device tree according to its port number. * * Return: On success, a pointer to the device node, %NULL on failure. */
struct device_node *usb_of_get_child_node(struct device_node *parent, int portnum) { struct device_node *node; u32 port; for_each_child_of_node(parent, node) { if (!of_property_read_u32(node, "reg", &port)) { if (port == portnum) return node; } } return NULL; }Contributors
| Person | Tokens | Prop | Commits | CommitProp | |
| peter chen | peter chen | 58 | 100.00% | 1 | 100.00% |
| Total | 58 | 100.00% | 1 | 100.00% |
| Person | Tokens | Prop | Commits | CommitProp | |
| peter chen | peter chen | 68 | 100.00% | 1 | 100.00% |
| Total | 68 | 100.00% | 1 | 100.00% |