| /* |
| * USB device quirk handling logic and table |
| * |
| * Copyright (c) 2007 Oliver Neukum |
| * Copyright (c) 2007 Greg Kroah-Hartman <gregkh@suse.de> |
| * |
| * This program is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License as published by the Free |
| * Software Foundation, version 2. |
| * |
| * |
| */ |
| |
| #include <linux/usb.h> |
| #include <linux/usb/quirks.h> |
| #include "usb.h" |
| |
| /* List of quirky USB devices. Please keep this list ordered by: |
| * 1) Vendor ID |
| * 2) Product ID |
| * 3) Class ID |
| * |
| * as we want specific devices to be overridden first, and only after that, any |
| * class specific quirks. |
| * |
| * Right now the logic aborts if it finds a valid device in the table, we might |
| * want to change that in the future if it turns out that a whole class of |
| * devices is broken... |
| */ |
| static const struct usb_device_id usb_quirk_list[] = { |
| /* HP 5300/5370C scanner */ |
| { USB_DEVICE(0x03f0, 0x0701), .driver_info = USB_QUIRK_STRING_FETCH_255 }, |
| /* Seiko Epson Corp - Perfection 1670 */ |
| { USB_DEVICE(0x04b8, 0x011f), .driver_info = USB_QUIRK_NO_AUTOSUSPEND }, |
| /* Elsa MicroLink 56k (V.250) */ |
| { USB_DEVICE(0x05cc, 0x2267), .driver_info = USB_QUIRK_NO_AUTOSUSPEND }, |
| |
| { } /* terminating entry must be last */ |
| }; |
| |
| static void usb_autosuspend_quirk(struct usb_device *udev) |
| { |
| #ifdef CONFIG_USB_SUSPEND |
| /* disable autosuspend, but allow the user to re-enable it via sysfs */ |
| udev->autosuspend_delay = 0; |
| #endif |
| } |
| |
| static const struct usb_device_id *find_id(struct usb_device *udev) |
| { |
| const struct usb_device_id *id = usb_quirk_list; |
| |
| for (; id->idVendor || id->bDeviceClass || id->bInterfaceClass || |
| id->driver_info; id++) { |
| if (usb_match_device(udev, id)) |
| return id; |
| } |
| return NULL; |
| } |
| |
| /* |
| * Detect any quirks the device has, and do any housekeeping for it if needed. |
| */ |
| void usb_detect_quirks(struct usb_device *udev) |
| { |
| const struct usb_device_id *id = usb_quirk_list; |
| |
| id = find_id(udev); |
| if (id) |
| udev->quirks = (u32)(id->driver_info); |
| if (udev->quirks) |
| dev_dbg(&udev->dev, "USB quirks for this device: %x\n", |
| udev->quirks); |
| |
| /* do any special quirk handling here if needed */ |
| if (udev->quirks & USB_QUIRK_NO_AUTOSUSPEND) |
| usb_autosuspend_quirk(udev); |
| } |