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