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
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	/* possible in developer configs only! */
54	if (!dev->bus->otg_port)
55		return 1;
56
57	/* HNP test device is _never_ targeted (see OTG spec 6.6.6) */
58	if ((le16_to_cpu(dev->descriptor.idVendor) == 0x1a0a &&
59	     le16_to_cpu(dev->descriptor.idProduct) == 0xbadd))
60		return 0;
61
62	/* NOTE: can't use usb_match_id() since interface caches
63	 * aren't set up yet. this is cut/paste from that code.
64	 */
65	for (id = whitelist_table; id->match_flags; id++) {
66		if ((id->match_flags & USB_DEVICE_ID_MATCH_VENDOR) &&
67		    id->idVendor != le16_to_cpu(dev->descriptor.idVendor))
68			continue;
69
70		if ((id->match_flags & USB_DEVICE_ID_MATCH_PRODUCT) &&
71		    id->idProduct != le16_to_cpu(dev->descriptor.idProduct))
72			continue;
73
74		/* No need to test id->bcdDevice_lo != 0, since 0 is never
75		   greater than any unsigned number. */
76		if ((id->match_flags & USB_DEVICE_ID_MATCH_DEV_LO) &&
77		    (id->bcdDevice_lo > le16_to_cpu(dev->descriptor.bcdDevice)))
78			continue;
79
80		if ((id->match_flags & USB_DEVICE_ID_MATCH_DEV_HI) &&
81		    (id->bcdDevice_hi < le16_to_cpu(dev->descriptor.bcdDevice)))
82			continue;
83
84		if ((id->match_flags & USB_DEVICE_ID_MATCH_DEV_CLASS) &&
85		    (id->bDeviceClass != dev->descriptor.bDeviceClass))
86			continue;
87
88		if ((id->match_flags & USB_DEVICE_ID_MATCH_DEV_SUBCLASS) &&
89		    (id->bDeviceSubClass != dev->descriptor.bDeviceSubClass))
90			continue;
91
92		if ((id->match_flags & USB_DEVICE_ID_MATCH_DEV_PROTOCOL) &&
93		    (id->bDeviceProtocol != dev->descriptor.bDeviceProtocol))
94			continue;
95
96		return 1;
97	}
98
99	/* add other match criteria here ... */
100
101
102	/* OTG MESSAGE: report errors here, customize to match your product */
103	dev_err(&dev->dev, "device v%04x p%04x is not supported\n",
104		le16_to_cpu(dev->descriptor.idVendor),
105		le16_to_cpu(dev->descriptor.idProduct));
106#ifdef	CONFIG_USB_OTG_WHITELIST
107	return 0;
108#else
109	return 1;
110#endif
111}
112
113