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
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
|
/*
* Copyright (c) 2001 Vojtech Pavlik
*
* Based on the work of:
* Toby Deshane
*/
/*
* InterAct digital gamepad/joystick driver for Linux
*/
/*
* This program is free software; 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/slab.h>
#include <linux/module.h>
#include <linux/delay.h>
#include <linux/init.h>
#include <linux/gameport.h>
#include <linux/input.h>
#include <linux/jiffies.h>
#define DRIVER_DESC "InterAct digital joystick driver"
MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>");
MODULE_DESCRIPTION(DRIVER_DESC);
MODULE_LICENSE("GPL");
#define INTERACT_MAX_START 600 /* 400 us */
#define INTERACT_MAX_STROBE 60 /* 40 us */
#define INTERACT_MAX_LENGTH 32 /* 32 bits */
#define INTERACT_TYPE_HHFX 0 /* HammerHead/FX */
#define INTERACT_TYPE_PP8D 1 /* ProPad 8 */
struct interact {
struct gameport *gameport;
struct input_dev *dev;
int bads;
int reads;
unsigned char type;
unsigned char length;
char phys[32];
};
static short interact_abs_hhfx[] =
{ ABS_RX, ABS_RY, ABS_X, ABS_Y, ABS_HAT0X, ABS_HAT0Y, -1 };
static short interact_abs_pp8d[] =
{ ABS_X, ABS_Y, -1 };
static short interact_btn_hhfx[] =
{ BTN_TR, BTN_X, BTN_Y, BTN_Z, BTN_A, BTN_B, BTN_C, BTN_TL, BTN_TL2, BTN_TR2, BTN_MODE, BTN_SELECT, -1 };
static short interact_btn_pp8d[] =
{ BTN_C, BTN_TL, BTN_TR, BTN_A, BTN_B, BTN_Y, BTN_Z, BTN_X, -1 };
struct interact_type {
int id;
short *abs;
short *btn;
char *name;
unsigned char length;
unsigned char b8;
};
static struct interact_type interact_type[] = {
{ 0x6202, interact_abs_hhfx, interact_btn_hhfx, "InterAct HammerHead/FX", 32, 4 },
{ 0x53f8, interact_abs_pp8d, interact_btn_pp8d, "InterAct ProPad 8 Digital", 16, 0 },
{ 0 }};
/*
* interact_read_packet() reads and InterAct joystick data.
*/
static int interact_read_packet(struct gameport *gameport, int length, u32 *data)
{
unsigned long flags;
unsigned char u, v;
unsigned int t, s;
int i;
i = 0;
data[0] = data[1] = data[2] = 0;
t = gameport_time(gameport, INTERACT_MAX_START);
s = gameport_time(gameport, INTERACT_MAX_STROBE);
local_irq_save(flags);
gameport_trigger(gameport);
v = gameport_read(gameport);
while (t > 0 && i < length) {
t--;
u = v; v = gameport_read(gameport);
if (v & ~u & 0x40) {
data[0] = (data[0] << 1) | ((v >> 4) & 1);
data[1] = (data[1] << 1) | ((v >> 5) & 1);
data[2] = (data[2] << 1) | ((v >> 7) & 1);
i++;
t = s;
}
}
local_irq_restore(flags);
return i;
}
/*
* interact_poll() reads and analyzes InterAct joystick data.
*/
static void interact_poll(struct gameport *gameport)
{
struct interact *interact = gameport_get_drvdata(gameport);
struct input_dev *dev = interact->dev;
u32 data[3];
int i;
interact->reads++;
if (interact_read_packet(interact->gameport, interact->length, data) < interact->length) {
interact->bads++;
} else {
for (i = 0; i < 3; i++)
data[i] <<= INTERACT_MAX_LENGTH - interact->length;
switch (interact->type) {
case INTERACT_TYPE_HHFX:
for (i = 0; i < 4; i++)
input_report_abs(dev, interact_abs_hhfx[i], (data[i & 1] >> ((i >> 1) << 3)) & 0xff);
for (i = 0; i < 2; i++)
input_report_abs(dev, ABS_HAT0Y - i,
((data[1] >> ((i << 1) + 17)) & 1) - ((data[1] >> ((i << 1) + 16)) & 1));
for (i = 0; i < 8; i++)
input_report_key(dev, interact_btn_hhfx[i], (data[0] >> (i + 16)) & 1);
for (i = 0; i < 4; i++)
input_report_key(dev, interact_btn_hhfx[i + 8], (data[1] >> (i + 20)) & 1);
break;
case INTERACT_TYPE_PP8D:
for (i = 0; i < 2; i++)
input_report_abs(dev, interact_abs_pp8d[i],
((data[0] >> ((i << 1) + 20)) & 1) - ((data[0] >> ((i << 1) + 21)) & 1));
for (i = 0; i < 8; i++)
input_report_key(dev, interact_btn_pp8d[i], (data[1] >> (i + 16)) & 1);
break;
}
}
input_sync(dev);
}
/*
* interact_open() is a callback from the input open routine.
*/
static int interact_open(struct input_dev *dev)
{
struct interact *interact = input_get_drvdata(dev);
gameport_start_polling(interact->gameport);
return 0;
}
/*
* interact_close() is a callback from the input close routine.
*/
static void interact_close(struct input_dev *dev)
{
struct interact *interact = input_get_drvdata(dev);
gameport_stop_polling(interact->gameport);
}
/*
* interact_connect() probes for InterAct joysticks.
*/
static int interact_connect(struct gameport *gameport, struct gameport_driver *drv)
{
struct interact *interact;
struct input_dev *input_dev;
__u32 data[3];
int i, t;
int err;
interact = kzalloc(sizeof(struct interact), GFP_KERNEL);
input_dev = input_allocate_device();
if (!interact || !input_dev) {
err = -ENOMEM;
goto fail1;
}
interact->gameport = gameport;
interact->dev = input_dev;
gameport_set_drvdata(gameport, interact);
err = gameport_open(gameport, drv, GAMEPORT_MODE_RAW);
if (err)
goto fail1;
i = interact_read_packet(gameport, INTERACT_MAX_LENGTH * 2, data);
if (i != 32 || (data[0] >> 24) != 0x0c || (data[1] >> 24) != 0x02) {
err = -ENODEV;
goto fail2;
}
for (i = 0; interact_type[i].length; i++)
if (interact_type[i].id == (data[2] >> 16))
break;
if (!interact_type[i].length) {
printk(KERN_WARNING "interact.c: Unknown joystick on %s. [len %d d0 %08x d1 %08x i2 %08x]\n",
gameport->phys, i, data[0], data[1], data[2]);
err = -ENODEV;
goto fail2;
}
gameport_set_poll_handler(gameport, interact_poll);
gameport_set_poll_interval(gameport, 20);
|