/*
* Synaptics TouchPad PS/2 mouse driver
*
* 2003 Dmitry Torokhov <dtor@mail.ru>
* Added support for pass-through port. Special thanks to Peter Berg Larsen
* for explaining various Synaptics quirks.
*
* 2003 Peter Osterlund <petero2@telia.com>
* Ported to 2.5 input device infrastructure.
*
* Copyright (C) 2001 Stefan Gmeiner <riddlebox@freesurf.ch>
* start merging tpconfig and gpm code to a xfree-input module
* adding some changes and extensions (ex. 3rd and 4th button)
*
* Copyright (c) 1997 C. Scott Ananian <cananian@alumni.priceton.edu>
* Copyright (c) 1998-2000 Bruce Kalk <kall@compass.com>
* code for the special synaptics commands (from the tpconfig-source)
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 as published by
* the Free Software Foundation.
*
* Trademarks are the property of their respective owners.
*/
#include <linux/module.h>
#include <linux/delay.h>
#include <linux/dmi.h>
#include <linux/input/mt.h>
#include <linux/serio.h>
#include <linux/libps2.h>
#include <linux/slab.h>
#include "psmouse.h"
#include "synaptics.h"
/*
* The x/y limits are taken from the Synaptics TouchPad interfacing Guide,
* section 2.3.2, which says that they should be valid regardless of the
* actual size of the sensor.
* Note that newer firmware allows querying device for maximum useable
* coordinates.
*/
#define XMIN_NOMINAL 1472
#define XMAX_NOMINAL 5472
#define YMIN_NOMINAL 1408
#define YMAX_NOMINAL 4448
/*
* Synaptics touchpads report the y coordinate from bottom to top, which is
* opposite from what userspace expects.
* This function is used to invert y before reporting.
*/
static int synaptics_invert_y(int y)
{
return YMAX_NOMINAL 