1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
|
/*
* Copyright (c) 1999-2001 Vojtech Pavlik
*/
/*
* 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, Simunkova 1594, 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>
#define DRIVER_DESC "Logitech WingMan Warrior joystick driver"
MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>");
MODULE_DESCRIPTION(DRIVER_DESC);
MODULE_LICENSE("GPL");
/*
* Constants.
*/
#define WARRIOR_MAX_LENGTH 16
static char warrior_lengths[] = { 0, 4, 12, 3, 4, 4, 0, 0 };
/*
* Per-Warrior data.
*/
struct warrior {
struct input_dev *dev;
int idx, len;
unsigned char data[WARRIOR_MAX_LENGTH];
char phys[32];
};
/*
* 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);
break;
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));
break;
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));
break;
}
input_sync(dev);
}
/*
* 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 irqreturn_t warrior_interrupt(struct serio *serio,
unsigned char data, unsigned int flags)
{
struct warrior *warrior = serio_get_drvdata(serio);
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;
}
return IRQ_HANDLED;
}
/*
* warrior_disconnect() is the opposite of warrior_connect()
*/
static void warrior_disconnect(struct serio *serio)
{
struct warrior *warrior = serio_get_drvdata(serio);
serio_close(serio);
serio_set_drvdata(serio, NULL);
input_unregister_device(warrior->dev);
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 int warrior_connect(struct serio *serio, struct serio_driver *drv)
{
struct warrior *warrior;
struct input_dev *input_dev;
int err = -ENOMEM;
warrior = kzalloc(sizeof(struct warrior), GFP_KERNEL);
input_dev = input_allocate_device();
if (!warrior || !input_dev)
goto fail1;
warrior->dev = input_dev;
snprintf(warrior->phys, sizeof(warrior->phys), "%s/input0", serio->phys);
input_dev->name = "Logitech WingMan Warrior";
input_dev->phys = warrior->phys;
input_dev->id.bustype = BUS_RS232;
input_dev->id.vendor = SERIO_WARRIOR;
input_dev->id.product = 0x0001;
input_dev->id.version = 0x0100;
input_dev->dev.parent = &serio->dev;
input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REL) |
BIT_MASK(EV_ABS);
input_dev->keybit[BIT_WORD(BTN_TRIGGER)] = BIT_MASK(BTN_TRIGGER) |
BIT_MASK(BTN_THUMB) | BIT_MASK(BTN_TOP) | BIT_MASK(BTN_TOP2);
input_dev->relbit[0] = BIT_MASK(REL_DIAL);
input_set_abs_params(input_dev, ABS_X, -64, 64, 0, 8);
input_set_abs_params(input_dev, ABS_Y, -64, 64, 0, 8);
input_set_abs_params(input_dev, ABS_THROTTLE, -112, 112, 0, 0);
input_set_abs_params(input_dev, ABS_HAT0X, -1, 1, 0, 0);
input_set_abs_params(input_dev, ABS_HAT0Y, -1, 1, 0, 0);
serio_set_drvdata(serio, warrior);
err = serio_open(serio, drv);
if (err)
goto fail2;
err = input_register_device(warrior->dev);
if (err)
goto fail3;
return 0;
fail3: serio_close(serio);
fail2: serio_set_drvdata(serio, NULL);
fail1: input_free_device(input_dev);
kfree(warrior);
return err;
}
/*
* The serio driver structure.
*/
static struct serio_device_id warrior_serio_ids[] = {
{
.type = SERIO_RS232,
.proto = SERIO_WARRIOR,
.id = SERIO_ANY,
.extra = SERIO_ANY,
},
{ 0 }
};
MODULE_DEVICE_TABLE(serio, warrior_serio_ids);
static struct serio_driver warrior_drv = {
.driver = {
.name = "warrior",
},
.description = DRIVER_DESC,
.id_table = warrior_serio_ids,
.interrupt = warrior_interrupt,
.connect = warrior_connect,
.disconnect = warrior_disconnect,
};
module_serio_driver(warrior_drv);
|
