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   1 /***************************************************************************
   2  *   Copyright (C) 2009 by Zachary T Welch <zw@superlucidity.net>          *
   3  *                                                                         *
   4  *   This program is free software; you can redistribute it and/or modify  *
   5  *   it under the terms of the GNU General Public License as published by  *
   6  *   the Free Software Foundation; either version 2 of the License, or     *
   7  *   (at your option) any later version.                                   *
   8  *                                                                         *
   9  *   This program is distributed in the hope that it will be useful,       *
  10  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
  11  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
  12  *   GNU General Public License for more details.                          *
  13  *                                                                         *
  14  *   You should have received a copy of the GNU General Public License     *
  15  *   along with this program.  If not, see <http://www.gnu.org/licenses/>. *
  16  ***************************************************************************/
  17
  18 #ifdef HAVE_CONFIG_H
  19 #include "config.h"
  20 #endif
  21 #include "usb_common.h"
  22 #include "log.h"
  23
  24
  25 static bool jtag_usb_match(struct usb_device *dev,
  26                 const uint16_t vids[], const uint16_t pids[])
  27 {
  28         for (unsigned i = 0; vids[i] && pids[i]; i++) {
  29                 if (dev->descriptor.idVendor == vids[i] &&
  30                         dev->descriptor.idProduct == pids[i])
  31                         return true;
  32         }
  33         return false;
  34 }
  35
  36 int jtag_usb_open(const uint16_t vids[], const uint16_t pids[],
  37                 struct usb_dev_handle **out)
  38 {
  39         usb_find_busses();
  40         usb_find_devices();
  41
  42         struct usb_bus *busses = usb_get_busses();
  43         for (struct usb_bus *bus = busses; bus; bus = bus->next) {
  44                 for (struct usb_device *dev = bus->devices; dev; dev = dev->next) {
  45                         if (!jtag_usb_match(dev, vids, pids))
  46                                 continue;
  47
  48                         *out = usb_open(dev);
  49                         if (NULL == *out) {
  50                                 LOG_ERROR("usb_open() failed with %s", usb_strerror());
  51                                 return ERROR_FAIL;
  52                         }
  53                         return ERROR_OK;
  54                 }
  55         }
  56         return ERROR_FAIL;
  57 }