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         /* HP 5300/5370C scanner */
  32         { USB_DEVICE(0x03f0, 0x0701), .driver_info = USB_QUIRK_STRING_FETCH_255 },
  33         /* Benq S2W 3300U */
  34         { USB_DEVICE(0x04a5, 0x20b0), .driver_info = USB_QUIRK_NO_AUTOSUSPEND },
  35         /* Seiko Epson Corp. Perfection 1200 */
  36         { USB_DEVICE(0x04b8, 0x0104), .driver_info = USB_QUIRK_NO_AUTOSUSPEND },
  37         /* Seiko Epson Corp - Perfection 1670 */
  38         { USB_DEVICE(0x04b8, 0x011f), .driver_info = USB_QUIRK_NO_AUTOSUSPEND },
  39         /* Samsung ML-2510 Series printer */
  40         { USB_DEVICE(0x04e8, 0x327e), .driver_info = USB_QUIRK_NO_AUTOSUSPEND },
  41         /* Elsa MicroLink 56k (V.250) */
  42         { USB_DEVICE(0x05cc, 0x2267), .driver_info = USB_QUIRK_NO_AUTOSUSPEND },
  43         /* Ultima Electronics Corp.*/
  44         { USB_DEVICE(0x05d8, 0x4005), .driver_info = USB_QUIRK_NO_AUTOSUSPEND },
  45         /* Umax [hex] Astra 3400U */
  46         { USB_DEVICE(0x1606, 0x0060), .driver_info = USB_QUIRK_NO_AUTOSUSPEND },
  47
  48         /* Philips PSC805 audio device */
  49         { USB_DEVICE(0x0471, 0x0155), .driver_info = USB_QUIRK_RESET_RESUME },
  50
  51         /* RIM Blackberry */
  52         { USB_DEVICE(0x0fca, 0x0001), .driver_info = USB_QUIRK_NO_AUTOSUSPEND },
  53         { USB_DEVICE(0x0fca, 0x0004), .driver_info = USB_QUIRK_NO_AUTOSUSPEND },
  54         { USB_DEVICE(0x0fca, 0x0006), .driver_info = USB_QUIRK_NO_AUTOSUSPEND },
  55
  56         { }  /* terminating entry must be last */
  57 };
  58
  59 static void usb_autosuspend_quirk(struct usb_device *udev)
  60 {
  61 #ifdef  CONFIG_USB_SUSPEND
  62         /* disable autosuspend, but allow the user to re-enable it via sysfs */
  63         udev->autosuspend_disabled = 1;
  64 #endif
  65 }
  66
  67 static const struct usb_device_id *find_id(struct usb_device *udev)
  68 {
  69         const struct usb_device_id *id = usb_quirk_list;
  70
  71         for (; id->idVendor || id->bDeviceClass || id->bInterfaceClass ||
  72                         id->driver_info; id++) {
  73                 if (usb_match_device(udev, id))
  74                         return id;
  75         }
  76         return NULL;
  77 }
  78
  79 /*
  80  * Detect any quirks the device has, and do any housekeeping for it if needed.
  81  */
  82 void usb_detect_quirks(struct usb_device *udev)
  83 {
  84         const struct usb_device_id *id = usb_quirk_list;
  85
  86         id = find_id(udev);
  87         if (id)
  88                 udev->quirks = (u32)(id->driver_info);
  89         if (udev->quirks)
  90                 dev_dbg(&udev->dev, "USB quirks for this device: %x\n",
  91                                 udev->quirks);
  92
  93         /* do any special quirk handling here if needed */
  94         if (udev->quirks & USB_QUIRK_NO_AUTOSUSPEND)
  95                 usb_autosuspend_quirk(udev);
  96 }