LXR linux/drivers/usb/core/otg

   1/*
   2 * drivers/usb/core/otg_whitelist.h
   3 *
   4 * Copyright (C) 2004 Texas Instruments
   5 *
   6 * This program is free software; you can redistribute it and/or modify
   7 * it under the terms of the GNU General Public License as published by
   8 * the Free Software Foundation; either version 2 of the License, or
   9 * (at your option) any later version.
  10 */
  11
  12/*
  13 * This OTG and Embedded Host Whitelist is "Targeted Peripheral List".
  14 * It should mostly use of USB_DEVICE() or USB_DEVICE_VER() entries..
  15 *
  16 * YOU _SHOULD_ CHANGE THIS LIST TO MATCH YOUR PRODUCT AND ITS TESTING!
  17 */
  18
  19static struct usb_device_id whitelist_table [] = {
  20
  21/* hubs are optional in OTG, but very handy ... */
  22{ USB_DEVICE_INFO(USB_CLASS_HUB, 0, 0), },
  23{ USB_DEVICE_INFO(USB_CLASS_HUB, 0, 1), },
  24
  25#ifdef  CONFIG_USB_PRINTER              /* ignoring nonstatic linkage! */
  26/* FIXME actually, printers are NOT supposed to use device classes;
  27 * they're supposed to use interface classes...
  28 */
  29{ USB_DEVICE_INFO(7, 1, 1) },
  30{ USB_DEVICE_INFO(7, 1, 2) },
  31{ USB_DEVICE_INFO(7, 1, 3) },
  32#endif
  33
  34#ifdef  CONFIG_USB_NET_CDCETHER
  35/* Linux-USB CDC Ethernet gadget */
  36{ USB_DEVICE(0x0525, 0xa4a1), },
  37/* Linux-USB CDC Ethernet + RNDIS gadget */
  38{ USB_DEVICE(0x0525, 0xa4a2), },
  39#endif
  40
  41#if     defined(CONFIG_USB_TEST) || defined(CONFIG_USB_TEST_MODULE)
  42/* gadget zero, for testing */
  43{ USB_DEVICE(0x0525, 0xa4a0), },
  44#endif
  45
  46{ }     /* Terminating entry */
  47};
  48
  49static int is_targeted(struct usb_device *dev)
  50{
  51        struct usb_device_id    *id = whitelist_table;
  52
  53        /* HNP test device is _never_ targeted (see OTG spec 6.6.6) */
  54        if ((le16_to_cpu(dev->descriptor.idVendor) == 0x1a0a &&
  55             le16_to_cpu(dev->descriptor.idProduct) == 0xbadd))
  56                return 0;
  57
  58        /* OTG PET device is always targeted (see OTG 2.0 ECN 6.4.2) */
  59        if ((le16_to_cpu(dev->descriptor.idVendor) == 0x1a0a &&
  60             le16_to_cpu(dev->descriptor.idProduct) == 0x0200))
  61                return 1;
  62
  63        /* NOTE: can't use usb_match_id() since interface caches
  64         * aren't set up yet. this is cut/paste from that code.
  65         */
  66        for (id = whitelist_table; id->match_flags; id++) {
  67                if ((id->match_flags & USB_DEVICE_ID_MATCH_VENDOR) &&
  68                    id->idVendor != le16_to_cpu(dev->descriptor.idVendor))
  69                        continue;
  70
  71                if ((id->match_flags & USB_DEVICE_ID_MATCH_PRODUCT) &&
  72                    id->idProduct != le16_to_cpu(dev->descriptor.idProduct))
  73                        continue;
  74
  75                /* No need to test id->bcdDevice_lo != 0, since 0 is never
  76                   greater than any unsigned number. */
  77                if ((id->match_flags & USB_DEVICE_ID_MATCH_DEV_LO) &&
  78                    (id->bcdDevice_lo > le16_to_cpu(dev->descriptor.bcdDevice)))
  79                        continue;
  80
  81                if ((id->match_flags & USB_DEVICE_ID_MATCH_DEV_HI) &&
  82                    (id->bcdDevice_hi < le16_to_cpu(dev->descriptor.bcdDevice)))
  83                        continue;
  84
  85                if ((id->match_flags & USB_DEVICE_ID_MATCH_DEV_CLASS) &&
  86                    (id->bDeviceClass != dev->descriptor.bDeviceClass))
  87                        continue;
  88
  89                if ((id->match_flags & USB_DEVICE_ID_MATCH_DEV_SUBCLASS) &&
  90                    (id->bDeviceSubClass != dev->descriptor.bDeviceSubClass))
  91                        continue;
  92
  93                if ((id->match_flags & USB_DEVICE_ID_MATCH_DEV_PROTOCOL) &&
  94                    (id->bDeviceProtocol != dev->descriptor.bDeviceProtocol))
  95                        continue;
  96
  97                return 1;
  98        }
  99
 100        /* add other match criteria here ... */
 101
 102
 103        /* OTG MESSAGE: report errors here, customize to match your product */
 104        dev_err(&dev->dev, "device v%04x p%04x is not supported\n",
 105                le16_to_cpu(dev->descriptor.idVendor),
 106                le16_to_cpu(dev->descriptor.idProduct));
 107
 108        return 0;
 109}
 110
 111