release/src-rt-6.x.4708/linux/linux-2.6.36/drivers/usb/core/otg_whitelist.h

   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 Whitelist is the OTG "Targeted Peripheral List".  It should
  14  * 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
  19 static 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 { USB_DEVICE_INFO(7, 1, 1) },
  27 { USB_DEVICE_INFO(7, 1, 2) },
  28 { USB_DEVICE_INFO(7, 1, 3) },
  29 #endif
  30
  31 #ifdef  CONFIG_USB_NET_CDCETHER
  32 /* Linux-USB CDC Ethernet gadget */
  33 { USB_DEVICE(0x0525, 0xa4a1), },
  34 /* Linux-USB CDC Ethernet + RNDIS gadget */
  35 { USB_DEVICE(0x0525, 0xa4a2), },
  36 #endif
  37
  38 #if     defined(CONFIG_USB_TEST) || defined(CONFIG_USB_TEST_MODULE)
  39 /* gadget zero, for testing */
  40 { USB_DEVICE(0x0525, 0xa4a0), },
  41 #endif
  42
  43 { }     /* Terminating entry */
  44 };
  45
  46 static int is_targeted(struct usb_device *dev)
  47 {
  48         struct usb_device_id    *id = whitelist_table;
  49
  50         /* possible in developer configs only! */
  51         if (!dev->bus->otg_port)
  52                 return 1;
  53
  54         /* HNP test device is _never_ targeted (see OTG spec 6.6.6) */
  55         if ((le16_to_cpu(dev->descriptor.idVendor) == 0x1a0a &&
  56              le16_to_cpu(dev->descriptor.idProduct) == 0xbadd))
  57                 return 0;
  58
  59         /* NOTE: can't use usb_match_id() since interface caches
  60          * aren't set up yet. this is cut/paste from that code.
  61          */
  62         for (id = whitelist_table; id->match_flags; id++) {
  63                 if ((id->match_flags & USB_DEVICE_ID_MATCH_VENDOR) &&
  64                     id->idVendor != le16_to_cpu(dev->descriptor.idVendor))
  65                         continue;
  66
  67                 if ((id->match_flags & USB_DEVICE_ID_MATCH_PRODUCT) &&
  68                     id->idProduct != le16_to_cpu(dev->descriptor.idProduct))
  69                         continue;
  70
  71                 /* No need to test id->bcdDevice_lo != 0, since 0 is never
  72                    greater than any unsigned number. */
  73                 if ((id->match_flags & USB_DEVICE_ID_MATCH_DEV_LO) &&
  74                     (id->bcdDevice_lo > le16_to_cpu(dev->descriptor.bcdDevice)))
  75                         continue;
  76
  77                 if ((id->match_flags & USB_DEVICE_ID_MATCH_DEV_HI) &&
  78                     (id->bcdDevice_hi < le16_to_cpu(dev->descriptor.bcdDevice)))
  79                         continue;
  80
  81                 if ((id->match_flags & USB_DEVICE_ID_MATCH_DEV_CLASS) &&
  82                     (id->bDeviceClass != dev->descriptor.bDeviceClass))
  83                         continue;
  84
  85                 if ((id->match_flags & USB_DEVICE_ID_MATCH_DEV_SUBCLASS) &&
  86                     (id->bDeviceSubClass != dev->descriptor.bDeviceSubClass))
  87                         continue;
  88
  89                 if ((id->match_flags & USB_DEVICE_ID_MATCH_DEV_PROTOCOL) &&
  90                     (id->bDeviceProtocol != dev->descriptor.bDeviceProtocol))
  91                         continue;
  92
  93                 return 1;
  94         }
  95
  96         /* add other match criteria here ... */
  97
  98
  99         /* OTG MESSAGE: report errors here, customize to match your product */
 100         dev_err(&dev->dev, "device v%04x p%04x is not supported\n",
 101                 le16_to_cpu(dev->descriptor.idVendor),
 102                 le16_to_cpu(dev->descriptor.idProduct));
 103 #ifdef  CONFIG_USB_OTG_WHITELIST
 104         return 0;
 105 #else
 106         return 1;
 107 #endif
 108 }