warrior.c
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上传日期:2013-02-24
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文件大小:6k
- /*
- * $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 16
- static 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%dn", 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");