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Changes based on code from an anonymous contributor.  This should make
trackpads work for Thinkpads.  Also adds code to handle externally
connected buttons (synaptics parlance), the first five are mapped to
mouse buttons 1-5.  The rest are currently not reported but could be
decoded if required.

/*	$NetBSD: synapticsvar.h,v 1.9 2019/06/02 08:55:00 blymn Exp $	*/

/*
 * Copyright (c) 2005, Steve C. Woodford
 * Copyright (c) 2004, Ales Krenek
 * Copyright (c) 2004, Kentaro A. Kurahone
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 *   * Redistributions of source code must retain the above copyright
 *     notice, this list of conditions and the following disclaimer.
 *   * Redistributions in binary form must reproduce the above
 *     copyright notice, this list of conditions and the following
 *     disclaimer in the documentation and/or other materials provided
 *     with the distribution.
 *   * Neither the name of the Kentaro A. Kurahone nor the names of its
 *     contributors may be used to endorse or promote products derived
 *     from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
 * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 *
 */

#ifndef _DEV_PCKBCPORT_SYNAPTICSVAR_H_
#define _DEV_PCKBCPORT_SYNAPTICSVAR_H_

struct synaptics_softc {
	int	caps;

	int	flags;
#define	SYN_FLAG_HAS_MIDDLE_BUTTON		(1 << 0)
#define	SYN_FLAG_HAS_BUTTONS_4_5		(1 << 1)
#define	SYN_FLAG_HAS_UP_DOWN_BUTTONS		(1 << 2)
#define	SYN_FLAG_HAS_PASSTHROUGH		(1 << 3)
#define	SYN_FLAG_HAS_PALM_DETECT		(1 << 4)
#define	SYN_FLAG_HAS_MULTI_FINGER		(1 << 5)
#define	SYN_FLAG_HAS_MULTI_FINGER_REPORT	(1 << 6)
#define	SYN_FLAG_HAS_VERTICAL_SCROLL		(1 << 7)
#define	SYN_FLAG_HAS_HORIZONTAL_SCROLL		(1 << 8)
#define	SYN_FLAG_HAS_ONE_BUTTON_CLICKPAD	(1 << 9)
#define	SYN_FLAG_HAS_TWO_BUTTON_CLICKPAD	(1 << 10)
#define	SYN_FLAG_HAS_EXTENDED_WMODE		(1 << 11)
#define	SYN_FLAG_HAS_ADV_GESTURE_MODE		(1 << 12)

	u_int	total_packets[2];	/* Total number of packets received */
#define	SYN_TIME(sc,c,n)	(((sc)->total_packets[(n)] >= (c)) ?	\
				((sc)->total_packets[(n)] - (c)) :	\
				((c) - (sc)->total_packets[(n)]))

	int	up_down;
	int	prev_fingers;

	int	gesture_start_x, gesture_start_y;
	int	gesture_move_x, gesture_move_y;
	u_int	gesture_start_packet;
	u_int	gesture_tap_packet;

	int	gesture_buttons;
	int	gesture_type;
#define	SYN_GESTURE_SINGLE	0x01
#define	SYN_GESTURE_DOUBLE	0x02
#define	SYN_GESTURE_DRAG	0x04
#define	SYN_IS_SINGLE_TAP(t)	((t) & SYN_GESTURE_SINGLE)
#define	SYN_IS_DOUBLE_TAP(t)	((t) & SYN_GESTURE_DOUBLE)
#define	SYN_IS_DRAG(t)		((t) & SYN_GESTURE_DRAG)

#define	SYN_HIST_SIZE	4
#define SYN_MAX_FINGERS 2
	char	button_history;
	int	dz_hold;
	int	rem_x[SYN_MAX_FINGERS];
	int	rem_y[SYN_MAX_FINGERS];
	int	rem_z[SYN_MAX_FINGERS];
	u_int	movement_history[SYN_MAX_FINGERS];
	int	history_x[SYN_MAX_FINGERS][SYN_HIST_SIZE];
	int	history_y[SYN_MAX_FINGERS][SYN_HIST_SIZE];
	int	history_z[SYN_MAX_FINGERS][SYN_HIST_SIZE];
};

int pms_synaptics_probe_init(void *vsc);
void pms_synaptics_enable(void *vsc);
void pms_synaptics_resume(void *vsc);

#endif