tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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linux
1/*
2 * USB device quirk handling logic and table
3 *
4 * Copyright (c) 2007 Oliver Neukum
5 * Copyright (c) 2007 Greg Kroah-Hartman <gregkh@suse.de>
6 *
7 * This program is free software; you can redistribute it and/or modify it
8 * under the terms of the GNU General Public License as published by the Free
9 * Software Foundation, version 2.
10 *
11 *
12 */
13
14#include <linux/usb.h>
15#include <linux/usb/quirks.h>
16#include "usb.h"
17
18/* List of quirky USB devices. Please keep this list ordered by:
19 * 1) Vendor ID
20 * 2) Product ID
21 * 3) Class ID
22 *
23 * as we want specific devices to be overridden first, and only after that, any
24 * class specific quirks.
25 *
26 * Right now the logic aborts if it finds a valid device in the table, we might
27 * want to change that in the future if it turns out that a whole class of
28 * devices is broken...
29 */
30static const struct usb_device_id usb_quirk_list[] = {
31 /* CBM - Flash disk */
32 { USB_DEVICE(0x0204, 0x6025), .driver_info = USB_QUIRK_RESET_RESUME },
33
34 /* HP 5300/5370C scanner */
35 { USB_DEVICE(0x03f0, 0x0701), .driver_info =
36 USB_QUIRK_STRING_FETCH_255 },
37
38 /* Creative SB Audigy 2 NX */
39 { USB_DEVICE(0x041e, 0x3020), .driver_info = USB_QUIRK_RESET_RESUME },
40
41 /* Philips PSC805 audio device */
42 { USB_DEVICE(0x0471, 0x0155), .driver_info = USB_QUIRK_RESET_RESUME },
43
44 /* Roland SC-8820 */
45 { USB_DEVICE(0x0582, 0x0007), .driver_info = USB_QUIRK_RESET_RESUME },
46
47 /* Edirol SD-20 */
48 { USB_DEVICE(0x0582, 0x0027), .driver_info = USB_QUIRK_RESET_RESUME },
49
50 /* appletouch */
51 { USB_DEVICE(0x05ac, 0x021a), .driver_info = USB_QUIRK_RESET_RESUME },
52
53 /* Avision AV600U */
54 { USB_DEVICE(0x0638, 0x0a13), .driver_info =
55 USB_QUIRK_STRING_FETCH_255 },
56
57 /* Saitek Cyborg Gold Joystick */
58 { USB_DEVICE(0x06a3, 0x0006), .driver_info =
59 USB_QUIRK_CONFIG_INTF_STRINGS },
60
61 /* M-Systems Flash Disk Pioneers */
62 { USB_DEVICE(0x08ec, 0x1000), .driver_info = USB_QUIRK_RESET_RESUME },
63
64 /* X-Rite/Gretag-Macbeth Eye-One Pro display colorimeter */
65 { USB_DEVICE(0x0971, 0x2000), .driver_info = USB_QUIRK_NO_SET_INTF },
66
67 /* Action Semiconductor flash disk */
68 { USB_DEVICE(0x10d6, 0x2200), .driver_info =
69 USB_QUIRK_STRING_FETCH_255 },
70
71 /* SKYMEDI USB_DRIVE */
72 { USB_DEVICE(0x1516, 0x8628), .driver_info = USB_QUIRK_RESET_RESUME },
73
74 /* INTEL VALUE SSD */
75 { USB_DEVICE(0x8086, 0xf1a5), .driver_info = USB_QUIRK_RESET_RESUME },
76
77 { } /* terminating entry must be last */
78};
79
80static const struct usb_device_id *find_id(struct usb_device *udev)
81{
82 const struct usb_device_id *id = usb_quirk_list;
83
84 for (; id->idVendor || id->bDeviceClass || id->bInterfaceClass ||
85 id->driver_info; id++) {
86 if (usb_match_device(udev, id))
87 return id;
88 }
89 return NULL;
90}
91
92/*
93 * Detect any quirks the device has, and do any housekeeping for it if needed.
94 */
95void usb_detect_quirks(struct usb_device *udev)
96{
97 const struct usb_device_id *id = usb_quirk_list;
98
99 id = find_id(udev);
100 if (id)
101 udev->quirks = (u32)(id->driver_info);
102 if (udev->quirks)
103 dev_dbg(&udev->dev, "USB quirks for this device: %x\n",
104 udev->quirks);
105
106#ifdef CONFIG_USB_SUSPEND
107
108 /* By default, disable autosuspend for all devices. The hub driver
109 * will enable it for hubs.
110 */
111 usb_disable_autosuspend(udev);
112
113 /* Autosuspend can also be disabled if the initial autosuspend_delay
114 * is negative.
115 */
116 if (udev->autosuspend_delay < 0)
117 usb_autoresume_device(udev);
118
119#endif
120
121 /* For the present, all devices default to USB-PERSIST enabled */
122#if 0 /* was: #ifdef CONFIG_PM */
123 /* Hubs are automatically enabled for USB-PERSIST */
124 if (udev->descriptor.bDeviceClass == USB_CLASS_HUB)
125 udev->persist_enabled = 1;
126
127#else
128 /* In the absence of PM, we can safely enable USB-PERSIST
129 * for all devices. It will affect things like hub resets
130 * and EMF-related port disables.
131 */
132 if (!(udev->quirks & USB_QUIRK_RESET_MORPHS))
133 udev->persist_enabled = 1;
134#endif /* CONFIG_PM */
135}