drivers/usb/core/quirks.c

   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  */
  30 static 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
  80 static 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  */
  95 void 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 }