/* * $Id: warrior.c,v 1.8 2000/05/31 13:17:12 vojtech Exp $ * *  Copyright (c) 1999-2000 Vojtech Pavlik * *  Sponsored by SuSE *//* * Logitech WingMan Warrior joystick driver for Linux *//* * This program is free warftware; 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 either by * e-mail - mail your message to <vojtech@ucw.cz>, or by paper mail: * Vojtech Pavlik, Ucitelska 1576, Prague 8, 182 00 Czech Republic */#include <linux/kernel.h>#include <linux/module.h>#include <linux/slab.h>#include <linux/input.h>#include <linux/serio.h>#include <linux/init.h>/* * Constants. */#define WARRIOR_MAX_LENGTH	16static char warrior_lengths[] = { 0, 4, 12, 3, 4, 4, 0, 0 }; static char *warrior_name = "Logitech WingMan Warrior";/* * Per-Warrior data. */struct warrior {	struct input_dev dev;	int idx, len;	unsigned char data[WARRIOR_MAX_LENGTH];};/* * warrior_process_packet() decodes packets the driver receives from the * Warrior. It updates the data accordingly. */static void warrior_process_packet(struct warrior *warrior){	struct input_dev *dev = &warrior->dev;	unsigned char *data = warrior->data;	if (!warrior->idx) return;	switch ((data[0] >> 4) & 7) {		case 1:					/* Button data */			input_report_key(dev, BTN_TRIGGER,  data[3]       & 1);			input_report_key(dev, BTN_THUMB,   (data[3] >> 1) & 1);			input_report_key(dev, BTN_TOP,     (data[3] >> 2) & 1);			input_report_key(dev, BTN_TOP2,    (data[3] >> 3) & 1);			return;		case 3:					/* XY-axis info->data */			input_report_abs(dev, ABS_X, ((data[0] & 8) << 5) - (data[2] | ((data[0] & 4) << 5)));			input_report_abs(dev, ABS_Y, (data[1] | ((data[0] & 1) << 7)) - ((data[0] & 2) << 7));			return;		case 5:					/* Throttle, spinner, hat info->data */			input_report_abs(dev, ABS_THROTTLE, (data[1] | ((data[0] & 1) << 7)) - ((data[0] & 2) << 7));			input_report_abs(dev, ABS_HAT0X, (data[3] & 2 ? 1 : 0) - (data[3] & 1 ? 1 : 0));			input_report_abs(dev, ABS_HAT0Y, (data[3] & 8 ? 1 : 0) - (data[3] & 4 ? 1 : 0));			input_report_rel(dev, REL_DIAL,  (data[2] | ((data[0] & 4) << 5)) - ((data[0] & 8) << 5));			return;	}}/* * warrior_interrupt() is called by the low level driver when characters * are ready for us. We then buffer them for further processing, or call the * packet processing routine. */static void warrior_interrupt(struct serio *serio, unsigned char data, unsigned int flags){	struct warrior* warrior = serio->private;	if (data & 0x80) {		if (warrior->idx) warrior_process_packet(warrior);		warrior->idx = 0;		warrior->len = warrior_lengths[(data >> 4) & 7];	}	if (warrior->idx < warrior->len)		warrior->data[warrior->idx++] = data;	if (warrior->idx == warrior->len) {		if (warrior->idx) warrior_process_packet(warrior);			warrior->idx = 0;		warrior->len = 0;	}}/* * warrior_disconnect() is the opposite of warrior_connect() */static void warrior_disconnect(struct serio *serio){	struct warrior* warrior = serio->private;	input_unregister_device(&warrior->dev);	serio_close(serio);	kfree(warrior);}/* * warrior_connect() is the routine that is called when someone adds a * new serio device. It looks for the Warrior, and if found, registers * it as an input device. */static void warrior_connect(struct serio *serio, struct serio_dev *dev){	struct warrior *warrior;	int i;	if (serio->type != (SERIO_RS232 | SERIO_WARRIOR))		return;	if (!(warrior = kmalloc(sizeof(struct warrior), GFP_KERNEL)))		return;	memset(warrior, 0, sizeof(struct warrior));	warrior->dev.evbit[0] = BIT(EV_KEY) | BIT(EV_REL) | BIT(EV_ABS);		warrior->dev.keybit[LONG(BTN_TRIGGER)] = BIT(BTN_TRIGGER) | BIT(BTN_THUMB) | BIT(BTN_TOP) | BIT(BTN_TOP2);	warrior->dev.relbit[0] = BIT(REL_DIAL);	warrior->dev.absbit[0] = BIT(ABS_X) | BIT(ABS_Y) | BIT(ABS_THROTTLE) | BIT(ABS_HAT0X) | BIT(ABS_HAT0Y);	warrior->dev.name = warrior_name;	warrior->dev.idbus = BUS_RS232;	warrior->dev.idvendor = SERIO_WARRIOR;	warrior->dev.idproduct = 0x0001;	warrior->dev.idversion = 0x0100;	for (i = 0; i < 2; i++) {		warrior->dev.absmax[ABS_X+i] = -64;			warrior->dev.absmin[ABS_X+i] =  64;			warrior->dev.absflat[ABS_X+i] = 8;		}	warrior->dev.absmax[ABS_THROTTLE] = -112;		warrior->dev.absmin[ABS_THROTTLE] =  112;		for (i = 0; i < 2; i++) {		warrior->dev.absmax[ABS_HAT0X+i] = -1;			warrior->dev.absmin[ABS_HAT0X+i] =  1;		}	warrior->dev.private = warrior;		serio->private = warrior;	if (serio_open(serio, dev)) {		kfree(warrior);		return;	}	input_register_device(&warrior->dev);	printk(KERN_INFO "input%d: Logitech WingMan Warrior on serio%d\n", warrior->dev.number, serio->number);}/* * The serio device structure. */static struct serio_dev warrior_dev = {	interrupt:	warrior_interrupt,	connect:	warrior_connect,	disconnect:	warrior_disconnect,};/* * The functions for inserting/removing us as a module. */int __init warrior_init(void){	serio_register_device(&warrior_dev);	return 0;}void __exit warrior_exit(void){	serio_unregister_device(&warrior_dev);}module_init(warrior_init);module_exit(warrior_exit);MODULE_LICENSE("GPL");