| Oliver Neukum | 7ceec1f | 2007-01-26 14:26:21 +0100 | [diff] [blame] | 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 }, |
| Oliver Neukum | 8a61499 | 2007-03-20 19:32:51 +0100 | [diff] [blame] | 33 | /* Seiko Epson Corp - Perfection 1670 */ |
| 34 | { USB_DEVICE(0x04b8, 0x011f), .driver_info = USB_QUIRK_NO_AUTOSUSPEND }, |
| Oliver Neukum | 7ceec1f | 2007-01-26 14:26:21 +0100 | [diff] [blame] | 35 | /* Elsa MicroLink 56k (V.250) */ |
| 36 | { USB_DEVICE(0x05cc, 0x2267), .driver_info = USB_QUIRK_NO_AUTOSUSPEND }, |
| 37 | |
| 38 | { } /* terminating entry must be last */ |
| 39 | }; |
| 40 | |
| 41 | static void usb_autosuspend_quirk(struct usb_device *udev) |
| 42 | { |
| Alan Stern | b5e795f | 2007-02-20 15:00:53 -0500 | [diff] [blame] | 43 | #ifdef CONFIG_USB_SUSPEND |
| 44 | /* disable autosuspend, but allow the user to re-enable it via sysfs */ |
| 45 | udev->autosuspend_delay = 0; |
| 46 | #endif |
| Oliver Neukum | 7ceec1f | 2007-01-26 14:26:21 +0100 | [diff] [blame] | 47 | } |
| 48 | |
| 49 | static const struct usb_device_id *find_id(struct usb_device *udev) |
| 50 | { |
| 51 | const struct usb_device_id *id = usb_quirk_list; |
| 52 | |
| 53 | for (; id->idVendor || id->bDeviceClass || id->bInterfaceClass || |
| 54 | id->driver_info; id++) { |
| 55 | if (usb_match_device(udev, id)) |
| 56 | return id; |
| 57 | } |
| 58 | return NULL; |
| 59 | } |
| 60 | |
| 61 | /* |
| 62 | * Detect any quirks the device has, and do any housekeeping for it if needed. |
| 63 | */ |
| 64 | void usb_detect_quirks(struct usb_device *udev) |
| 65 | { |
| 66 | const struct usb_device_id *id = usb_quirk_list; |
| 67 | |
| 68 | id = find_id(udev); |
| 69 | if (id) |
| 70 | udev->quirks = (u32)(id->driver_info); |
| 71 | if (udev->quirks) |
| 72 | dev_dbg(&udev->dev, "USB quirks for this device: %x\n", |
| 73 | udev->quirks); |
| 74 | |
| 75 | /* do any special quirk handling here if needed */ |
| 76 | if (udev->quirks & USB_QUIRK_NO_AUTOSUSPEND) |
| 77 | usb_autosuspend_quirk(udev); |
| 78 | } |