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/*
* drivers/usb/core/otg_whitelist.h
*
* Copyright (C) 2004 Texas Instruments
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*/
/*
* This OTG Whitelist is the OTG "Targeted Peripheral List". It should
* mostly use of USB_DEVICE() or USB_DEVICE_VER() entries..
*
* YOU _SHOULD_ CHANGE THIS LIST TO MATCH YOUR PRODUCT AND ITS TESTING!
*/
static struct usb_device_id whitelist_table [] = {
/* hubs are optional in OTG, but very handy ... */
{ USB_DEVICE_INFO(USB_CLASS_HUB, 0, 0), },
{ USB_DEVICE_INFO(USB_CLASS_HUB, 0, 1), },
#ifdef CONFIG_USB_PRINTER /* ignoring nonstatic linkage! */
/* FIXME actually, printers are NOT supposed to use device classes;
* they're supposed to use interface classes...
*/
{ USB_DEVICE_INFO(7, 1, 1) },
{ USB_DEVICE_INFO(7, 1, 2) },
{ USB_DEVICE_INFO(7, 1, 3) },
#endif
#ifdef CONFIG_USB_NET_CDCETHER
/* Linux-USB CDC Ethernet gadget */
{ USB_DEVICE(0x0525, 0xa4a1), },
/* Linux-USB CDC Ethernet + RNDIS gadget */
{ USB_DEVICE(0x0525, 0xa4a2), },
#endif
#if defined(CONFIG_USB_TEST) || defined(CONFIG_USB_TEST_MODULE)
/* gadget zero, for testing */
{ USB_DEVICE(0x0525, 0xa4a0), },
#endif
{ } /* Terminating entry */
};
static int is_targeted(struct usb_device *dev)
{
struct usb_device_id *id = whitelist_table;
/* possible in developer configs only! */
if (!dev->bus->otg_port)
return 1;
/* HNP test device is _never_ targeted (see OTG spec 6.6.6) */
if ((le16_to_cpu(dev->descriptor.idVendor) == 0x1a0a &&
le16_to_cpu(dev->descriptor.idProduct) == 0xbadd))
return 0;
/* OTG PET device is always targeted (see OTG 2.0 ECN 6.4.2) */
if ((le16_to_cpu(dev->descriptor.idVendor) == 0x1a0a &&
le16_to_cpu(dev->descriptor.idProduct) == 0x0200))
return 1;
/* NOTE: can't use usb_match_id() since interface caches
* aren't set up yet. this is cut/paste from that code.
*/
for (id = whitelist_table; id->match_flags; id++) {
if ((id->match_flags & USB_DEVICE_ID_MATCH_VENDOR) &&
id->idVendor != le16_to_cpu(dev->descriptor.idVendor))
continue;
if ((id->match_flags & USB_DEVICE_ID_MATCH_PRODUCT) &&
id->idProduct != le16_to_cpu(dev->descriptor.idProduct))
continue;
/* No need to test id->bcdDevice_lo != 0, since 0 is never
greater than any unsigned number. */
if ((id->match_flags & USB_DEVICE_ID_MATCH_DEV_LO) &&
(id->bcdDevice_lo > le16_to_cpu(dev->descriptor.bcdDevice)))
continue;
if ((id->match_flags & USB_DEVICE_ID_MATCH_DEV_HI) &&
(id->bcdDevice_hi < le16_to_cpu(dev->descriptor.bcdDevice)))
continue;
if ((id->match_flags & USB_DEVICE_ID_MATCH_DEV_CLASS) &&
(id->bDeviceClass != dev->descriptor.bDeviceClass))
continue;
if ((id->match_flags & USB_DEVICE_ID_MATCH_DEV_SUBCLASS) &&
(id->bDeviceSubClass != dev->descriptor.bDeviceSubClass))
continue;
if ((id->match_flags & USB_DEVICE_ID_MATCH_DEV_PROTOCOL) &&
(id->bDeviceProtocol != dev->descriptor.bDeviceProtocol))
continue;
#if defined(CONFIG_USB_PEHCI_HCD) || defined(CONFIG_USB_PEHCI_HCD_MODULE)
/*Hub is targeted device,so code execution should reach here */
if (USB_CLASS_HUB == dev->descriptor.bDeviceClass) {
/* count the tiers and if it is more than 6, return 0 */
unsigned char tier = 0;
struct usb_device *root_hub;
root_hub = dev->bus->root_hub;
while ((dev->parent != NULL) && /* root hub not count */
(dev->parent != root_hub) &&
(tier != 6)) {/* interal hub not count */
tier++;
dev = dev->parent;
}
if (tier == 6) {
dev_err(&dev->dev, "5 tier of hubs reached,"
" newly added hub will not be"
" supported!\n");
hub_tier = 1;
return 0;
}
}
#endif
return 1;
}
/* add other match criteria here ... */
/* OTG MESSAGE: report errors here, customize to match your product */
dev_err(&dev->dev, "device v%04x p%04x is not supported\n",
le16_to_cpu(dev->descriptor.idVendor),
le16_to_cpu(dev->descriptor.idProduct));
#ifdef CONFIG_USB_OTG_WHITELIST
return 0;
#else
return 1;
#endif
}
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