2 * $Id: warrior.c,v 1.14 2002/01/22 20:32:10 vojtech Exp $
4 * Copyright (c) 1999-2001 Vojtech Pavlik
8 * Logitech WingMan Warrior joystick driver for Linux
12 * This program is free warftware; you can redistribute it and/or modify
13 * it under the terms of the GNU General Public License as published by
14 * the Free Software Foundation; either version 2 of the License, or
15 * (at your option) any later version.
17 * This program is distributed in the hope that it will be useful,
18 * but WITHOUT ANY WARRANTY; without even the implied warranty of
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 * GNU General Public License for more details.
22 * You should have received a copy of the GNU General Public License
23 * along with this program; if not, write to the Free Software
24 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
26 * Should you need to contact me, the author, you can do so either by
27 * e-mail - mail your message to <vojtech@ucw.cz>, or by paper mail:
28 * Vojtech Pavlik, Simunkova 1594, Prague 8, 182 00 Czech Republic
31 #include <linux/kernel.h>
32 #include <linux/module.h>
33 #include <linux/slab.h>
34 #include <linux/input.h>
35 #include <linux/serio.h>
36 #include <linux/init.h>
38 #define DRIVER_DESC "Logitech WingMan Warrior joystick driver"
40 MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>");
41 MODULE_DESCRIPTION(DRIVER_DESC);
42 MODULE_LICENSE("GPL");
48 #define WARRIOR_MAX_LENGTH 16
49 static char warrior_lengths[] = { 0, 4, 12, 3, 4, 4, 0, 0 };
56 struct input_dev *dev;
58 unsigned char data[WARRIOR_MAX_LENGTH];
63 * warrior_process_packet() decodes packets the driver receives from the
64 * Warrior. It updates the data accordingly.
67 static void warrior_process_packet(struct warrior *warrior, struct pt_regs *regs)
69 struct input_dev *dev = warrior->dev;
70 unsigned char *data = warrior->data;
72 if (!warrior->idx) return;
74 input_regs(dev, regs);
76 switch ((data[0] >> 4) & 7) {
77 case 1: /* Button data */
78 input_report_key(dev, BTN_TRIGGER, data[3] & 1);
79 input_report_key(dev, BTN_THUMB, (data[3] >> 1) & 1);
80 input_report_key(dev, BTN_TOP, (data[3] >> 2) & 1);
81 input_report_key(dev, BTN_TOP2, (data[3] >> 3) & 1);
83 case 3: /* XY-axis info->data */
84 input_report_abs(dev, ABS_X, ((data[0] & 8) << 5) - (data[2] | ((data[0] & 4) << 5)));
85 input_report_abs(dev, ABS_Y, (data[1] | ((data[0] & 1) << 7)) - ((data[0] & 2) << 7));
87 case 5: /* Throttle, spinner, hat info->data */
88 input_report_abs(dev, ABS_THROTTLE, (data[1] | ((data[0] & 1) << 7)) - ((data[0] & 2) << 7));
89 input_report_abs(dev, ABS_HAT0X, (data[3] & 2 ? 1 : 0) - (data[3] & 1 ? 1 : 0));
90 input_report_abs(dev, ABS_HAT0Y, (data[3] & 8 ? 1 : 0) - (data[3] & 4 ? 1 : 0));
91 input_report_rel(dev, REL_DIAL, (data[2] | ((data[0] & 4) << 5)) - ((data[0] & 8) << 5));
98 * warrior_interrupt() is called by the low level driver when characters
99 * are ready for us. We then buffer them for further processing, or call the
100 * packet processing routine.
103 static irqreturn_t warrior_interrupt(struct serio *serio,
104 unsigned char data, unsigned int flags, struct pt_regs *regs)
106 struct warrior *warrior = serio_get_drvdata(serio);
109 if (warrior->idx) warrior_process_packet(warrior, regs);
111 warrior->len = warrior_lengths[(data >> 4) & 7];
114 if (warrior->idx < warrior->len)
115 warrior->data[warrior->idx++] = data;
117 if (warrior->idx == warrior->len) {
118 if (warrior->idx) warrior_process_packet(warrior, regs);
126 * warrior_disconnect() is the opposite of warrior_connect()
129 static void warrior_disconnect(struct serio *serio)
131 struct warrior *warrior = serio_get_drvdata(serio);
134 serio_set_drvdata(serio, NULL);
135 input_unregister_device(warrior->dev);
140 * warrior_connect() is the routine that is called when someone adds a
141 * new serio device. It looks for the Warrior, and if found, registers
142 * it as an input device.
145 static int warrior_connect(struct serio *serio, struct serio_driver *drv)
147 struct warrior *warrior;
148 struct input_dev *input_dev;
151 warrior = kzalloc(sizeof(struct warrior), GFP_KERNEL);
152 input_dev = input_allocate_device();
153 if (!warrior || !input_dev)
156 warrior->dev = input_dev;
157 sprintf(warrior->phys, "%s/input0", serio->phys);
159 input_dev->name = "Logitech WingMan Warrior";
160 input_dev->phys = warrior->phys;
161 input_dev->id.bustype = BUS_RS232;
162 input_dev->id.vendor = SERIO_WARRIOR;
163 input_dev->id.product = 0x0001;
164 input_dev->id.version = 0x0100;
165 input_dev->cdev.dev = &serio->dev;
166 input_dev->private = warrior;
168 input_dev->evbit[0] = BIT(EV_KEY) | BIT(EV_REL) | BIT(EV_ABS);
169 input_dev->keybit[LONG(BTN_TRIGGER)] = BIT(BTN_TRIGGER) | BIT(BTN_THUMB) | BIT(BTN_TOP) | BIT(BTN_TOP2);
170 input_dev->relbit[0] = BIT(REL_DIAL);
171 input_set_abs_params(input_dev, ABS_X, -64, 64, 0, 8);
172 input_set_abs_params(input_dev, ABS_Y, -64, 64, 0, 8);
173 input_set_abs_params(input_dev, ABS_THROTTLE, -112, 112, 0, 0);
174 input_set_abs_params(input_dev, ABS_HAT0X, -1, 1, 0, 0);
175 input_set_abs_params(input_dev, ABS_HAT0Y, -1, 1, 0, 0);
177 serio_set_drvdata(serio, warrior);
179 err = serio_open(serio, drv);
183 input_register_device(warrior->dev);
186 fail: serio_set_drvdata(serio, NULL);
187 input_free_device(input_dev);
193 * The serio driver structure.
196 static struct serio_device_id warrior_serio_ids[] = {
199 .proto = SERIO_WARRIOR,
206 MODULE_DEVICE_TABLE(serio, warrior_serio_ids);
208 static struct serio_driver warrior_drv = {
212 .description = DRIVER_DESC,
213 .id_table = warrior_serio_ids,
214 .interrupt = warrior_interrupt,
215 .connect = warrior_connect,
216 .disconnect = warrior_disconnect,
220 * The functions for inserting/removing us as a module.
223 static int __init warrior_init(void)
225 serio_register_driver(&warrior_drv);
229 static void __exit warrior_exit(void)
231 serio_unregister_driver(&warrior_drv);
234 module_init(warrior_init);
235 module_exit(warrior_exit);