76 lines
2.0 KiB
C
76 lines
2.0 KiB
C
/*
|
|
* 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 },
|
|
|
|
/* 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)
|
|
{
|
|
/* unbalanced resume to prevent autosuspends */
|
|
usb_autoresume_device(udev);
|
|
}
|
|
|
|
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);
|
|
}
|