/*
* Force feedback support for hid devices.
* Not all hid devices use the same protocol. For example, some use PID,
* other use their own proprietary procotol.
*
* Copyright (c) 2002-2004 Johann Deneux
*/
/*
* 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; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* Should you need to contact me, the author, you can do so by
* e-mail - mail your message to <johann.deneux@it.uu.se>
*/
#include <linux/input.h>
#undef DEBUG
#include <linux/usb.h>
#include <linux/hid.h>
#include "usbhid.h"
/*
* This table contains pointers to initializers. To add support for new
* devices, you need to add the USB vendor and product ids here.
*/
struct hid_ff_initializer {
u16 idVendor;
u16 idProduct;
int (*init)(struct hid_device*);
};
/*
* We try pidff when no other driver is found because PID is the
* standards compliant way of implementing force feedback in HID.
* pidff_init() will quickly abort if the device doesn't appear to
* be a PID device
*/
static struct hid_ff_initializer inits[] = {
#ifdef CONFIG_ZEROPLUS_FF
{ 0xc12, 0x0005, hid_zpff_init },
{ 0xc12, 0x0030, hid_zpff_init },
#endif
{ 0, 0, hid_pidff_init} /* Matches anything */
};
int hid_ff_init(struct hid_device* hid)
{
struct hid_ff_initializer *init;
int vendor = le16_to_cpu(hid_to_usb_dev(hid)->descriptor.idVendor);
int product = le16_to_cpu(hid_to_usb_dev(hid)->descriptor.idProduct);
for (init = inits; init->idVendor; init++)
if (init->idVendor == vendor && init->idProduct == product)
break;
return init->init(hid);
}
EXPORT_SYMBOL_GPL(hid_ff_init);
