tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
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 /* NOTE: can't use usb_match_id() since interface caches
59 * aren't set up yet. this is cut/paste from that code.
60 */
61 for (id = whitelist_table; id->match_flags; id++) {
62 if ((id->match_flags & USB_DEVICE_ID_MATCH_VENDOR) &&
63 id->idVendor != le16_to_cpu(dev->descriptor.idVendor))
64 continue;
65
66 if ((id->match_flags & USB_DEVICE_ID_MATCH_PRODUCT) &&
67 id->idProduct != le16_to_cpu(dev->descriptor.idProduct))
68 continue;
69
70 /* No need to test id->bcdDevice_lo != 0, since 0 is never
71 greater than any unsigned number. */
72 if ((id->match_flags & USB_DEVICE_ID_MATCH_DEV_LO) &&
73 (id->bcdDevice_lo > le16_to_cpu(dev->descriptor.bcdDevice)))
74 continue;
75
76 if ((id->match_flags & USB_DEVICE_ID_MATCH_DEV_HI) &&
77 (id->bcdDevice_hi < le16_to_cpu(dev->descriptor.bcdDevice)))
78 continue;
79
80 if ((id->match_flags & USB_DEVICE_ID_MATCH_DEV_CLASS) &&
81 (id->bDeviceClass != dev->descriptor.bDeviceClass))
82 continue;
83
84 if ((id->match_flags & USB_DEVICE_ID_MATCH_DEV_SUBCLASS) &&
85 (id->bDeviceSubClass != dev->descriptor.bDeviceSubClass))
86 continue;
87
88 if ((id->match_flags & USB_DEVICE_ID_MATCH_DEV_PROTOCOL) &&
89 (id->bDeviceProtocol != dev->descriptor.bDeviceProtocol))
90 continue;
91
92 return 1;
93 }
94
95 /* add other match criteria here ... */
96
97
98 /* OTG MESSAGE: report errors here, customize to match your product */
99 dev_err(&dev->dev, "device v%04x p%04x is not supported\n",
100 le16_to_cpu(dev->descriptor.idVendor),
101 le16_to_cpu(dev->descriptor.idProduct));
102
103 return 0;
104}
105