153 lines
3.3 KiB
C
153 lines
3.3 KiB
C
/*
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* usb.c - rescan for USB devices
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*
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* Copyright (c) 2011 Sascha Hauer <s.hauer@pengutronix.de>, Pengutronix
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*
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* See file CREDITS for list of people who contributed to this
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* project.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2
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* as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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*/
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#include <common.h>
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#include <command.h>
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#include <complete.h>
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#include <usb/usb.h>
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#include <getopt.h>
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/* shows the device tree recursively */
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static void usb_show_tree_graph(struct usb_device *dev, char *pre)
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{
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int i, index;
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int has_child, last_child;
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index = strlen(pre);
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printf(" %s", pre);
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/* check if the device has connected children */
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has_child = 0;
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for (i = 0; i < dev->maxchild; i++) {
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if (dev->children[i] != NULL)
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has_child = 1;
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}
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/* check if we are the last one */
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last_child = 1;
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if (dev->parent) {
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for (i = 0; i < dev->parent->maxchild; i++) {
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if (dev->parent->children[i])
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last_child = 0;
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if (dev->parent->children[i] == dev)
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last_child = 1;
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} /* for all children of the parent */
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printf("\b+-");
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/* correct last child */
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if (last_child)
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pre[index - 1] = ' ';
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} else {
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/* if not root hub */
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printf(" ");
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}
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printf("%d ", dev->devnum);
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pre[index++] = ' ';
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pre[index++] = has_child ? '|' : ' ';
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pre[index] = 0;
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printf("ID %04x:%04x\n", dev->descriptor->idVendor, dev->descriptor->idProduct);
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if (strlen(dev->mf) || strlen(dev->prod) || strlen(dev->serial))
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printf(" %s %s %s %s\n", pre, dev->mf, dev->prod, dev->serial);
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printf(" %s\n", pre);
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if (dev->maxchild > 0) {
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for (i = 0; i < dev->maxchild; i++) {
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if (dev->children[i] != NULL) {
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usb_show_tree_graph(dev->children[i], pre);
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pre[index] = 0;
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}
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}
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}
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}
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/* main routine for the tree command */
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static void usb_show_tree(struct usb_device *dev)
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{
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char preamble[32];
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memset(preamble, 0, 32);
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usb_show_tree_graph(dev, &preamble[0]);
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}
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static void usb_show_devices(bool tree)
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{
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struct usb_device *dev;
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list_for_each_entry(dev, &usb_device_list, list) {
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if (tree) {
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if (dev->parent == NULL)
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usb_show_tree(dev);
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} else {
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printf("Bus %03d Device %03d: ID %04x:%04x %s\n",
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dev->host->busnum, dev->devnum,
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dev->descriptor->idVendor,
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dev->descriptor->idProduct,
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dev->prod);
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}
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}
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}
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static int do_usb(int argc, char *argv[])
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{
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int opt;
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int tree = 0, show = 0;
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while ((opt = getopt(argc, argv, "ts")) > 0) {
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switch (opt) {
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case 't':
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tree = 1;
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show = 1;
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break;
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case 's':
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show = 1;
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break;
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}
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}
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usb_rescan();
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if (show)
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usb_show_devices(tree);
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return 0;
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}
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BAREBOX_CMD_HELP_START(usb)
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BAREBOX_CMD_HELP_TEXT("Scan for USB devices.")
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BAREBOX_CMD_HELP_TEXT("")
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BAREBOX_CMD_HELP_TEXT("Options:")
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BAREBOX_CMD_HELP_OPT("-s", "show devices")
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BAREBOX_CMD_HELP_OPT("-t", "show USB tree")
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BAREBOX_CMD_HELP_END
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BAREBOX_CMD_START(usb)
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.cmd = do_usb,
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BAREBOX_CMD_DESC("(re-)detect USB devices")
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BAREBOX_CMD_OPTS("[-ts]")
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BAREBOX_CMD_GROUP(CMD_GRP_HWMANIP)
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BAREBOX_CMD_HELP(cmd_usb_help)
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BAREBOX_CMD_COMPLETE(empty_complete)
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BAREBOX_CMD_END
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