1 /*
2 * $Id: a3d.c,v 1.21 2002/01/22 20:11:50 vojtech Exp $
3 *
4 * Copyright (c) 1998-2001 Vojtech Pavlik
5 */
6
7 /*
8 * FP-Gaming Assasin 3D joystick driver for Linux
9 */
10
11 /*
12 * This program is free software; 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.
16 *
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.
21 *
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
25 *
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
29 */
30
31 #include <linux/kernel.h>
32 #include <linux/module.h>
33 #include <linux/slab.h>
34 #include <linux/init.h>
35 #include <linux/gameport.h>
36 #include <linux/input.h>
37
38 MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>");
39 MODULE_DESCRIPTION("FP-Gaming Assasin 3D joystick driver");
40 MODULE_LICENSE("GPL");
41
42 #define A3D_MAX_START 400 /* 400 us */
43 #define A3D_MAX_STROBE 60 /* 40 us */
44 #define A3D_DELAY_READ 3 /* 3 ms */
45 #define A3D_MAX_LENGTH 40 /* 40*3 bits */
46 #define A3D_REFRESH_TIME HZ/50 /* 20 ms */
47
48 #define A3D_MODE_A3D 1 /* Assassin 3D */
49 #define A3D_MODE_PAN 2 /* Panther */
50 #define A3D_MODE_OEM 3 /* Panther OEM version */
51 #define A3D_MODE_PXL 4 /* Panther XL */
52
53 char *a3d_names[] = { NULL, "FP-Gaming Assassin 3D", "MadCatz Panther", "OEM Panther",
54 "MadCatz Panther XL", "MadCatz Panther XL w/ rudder" };
55
56 struct a3d {
57 struct gameport *gameport;
58 struct gameport adc;
59 struct input_dev dev;
60 struct timer_list timer;
61 int axes[4];
62 int buttons;
63 int mode;
64 int length;
65 int used;
66 int reads;
67 int bads;
68 char phys[32];
69 char adcphys[32];
70 };
71
72 /*
73 * a3d_read_packet() reads an Assassin 3D packet.
74 */
75
76 static int a3d_read_packet(struct gameport *gameport, int length, char *data)
77 {
78 unsigned long flags;
79 unsigned char u, v;
80 unsigned int t, s;
81 int i;
82
83 i = 0;
84 t = gameport_time(gameport, A3D_MAX_START);
85 s = gameport_time(gameport, A3D_MAX_STROBE);
86
87 local_irq_save(flags);
88 gameport_trigger(gameport);
89 v = gameport_read(gameport);
90
91 while (t > 0 && i < length) {
92 t--;
93 u = v; v = gameport_read(gameport);
94 if (~v & u & 0x10) {
95 data[i++] = v >> 5;
96 t = s;
97 }
98 }
99
100 local_irq_restore(flags);
101
102 return i;
103 }
104
105 /*
106 * a3d_csum() computes checksum of triplet packet
107 */
108
109 static int a3d_csum(char *data, int count)
110 {
111 int i, csum = 0;
112 for (i = 0; i < count - 2; i++) csum += data[i];
113 return (csum & 0x3f) != ((data[count - 2] << 3) | data[count - 1]);
114 }
115
116 static void a3d_read(struct a3d *a3d, unsigned char *data)
117 {
118 struct input_dev *dev = &a3d->dev;
119
120 switch (a3d->mode) {
121
122 case A3D_MODE_A3D:
123 case A3D_MODE_OEM:
124 case A3D_MODE_PAN:
125
126 input_report_rel(dev, REL_X, ((data[5] << 6) | (data[6] << 3) | data[ 7]) - ((data[5] & 4) << 7));
127 input_report_rel(dev, REL_Y, ((data[8] << 6) | (data[9] << 3) | data[10]) - ((data[8] & 4) << 7));
128
129 input_report_key(dev, BTN_RIGHT, data[2] & 1);
130 input_report_key(dev, BTN_LEFT, data[3] & 2);
131 input_report_key(dev, BTN_MIDDLE, data[3] & 4);
132
133 input_sync(dev);
134
135 a3d->axes[0] = ((signed char)((data[11] << 6) | (data[12] << 3) | (data[13]))) + 128;
136 a3d->axes[1] = ((signed char)((data[14] << 6) | (data[15] << 3) | (data[16]))) + 128;
137 a3d->axes[2] = ((signed char)((data[17] << 6) | (data[18] << 3) | (data[19]))) + 128;
138 a3d->axes[3] = ((signed char)((data[20] << 6) | (data[21] << 3) | (data[22]))) + 128;
139
140 a3d->buttons = ((data[3] << 3) | data[4]) & 0xf;
141
142 return;
143
144 case A3D_MODE_PXL:
145
146 input_report_rel(dev, REL_X, ((data[ 9] << 6) | (data[10] << 3) | data[11]) - ((data[ 9] & 4) << 7));
147 input_report_rel(dev, REL_Y, ((data[12] << 6) | (data[13] << 3) | data[14]) - ((data[12] & 4) << 7));
148
149 input_report_key(dev, BTN_RIGHT, data[2] & 1);
150 input_report_key(dev, BTN_LEFT, data[3] & 2);
151 input_report_key(dev, BTN_MIDDLE, data[3] & 4);
152 input_report_key(dev, BTN_SIDE, data[7] & 2);
153 input_report_key(dev, BTN_EXTRA, data[7] & 4);
154
155 input_report_abs(dev, ABS_X, ((signed char)((data[15] << 6) | (data[16] << 3) | (data[17]))) + 128);
156 input_report_abs(dev, ABS_Y, ((signed char)((data[18] << 6) | (data[19] << 3) | (data[20]))) + 128);
157 input_report_abs(dev, ABS_RUDDER, ((signed char)((data[21] << 6) | (data[22] << 3) | (data[23]))) + 128);
158 input_report_abs(dev, ABS_THROTTLE, ((signed char)((data[24] << 6) | (data[25] << 3) | (data[26]))) + 128);
159
160 input_report_abs(dev, ABS_HAT0X, ( data[5] & 1) - ((data[5] >> 2) & 1));
161 input_report_abs(dev, ABS_HAT0Y, ((data[5] >> 1) & 1) - ((data[6] >> 2) & 1));
162 input_report_abs(dev, ABS_HAT1X, ((data[4] >> 1) & 1) - ( data[3] & 1));
163 input_report_abs(dev, ABS_HAT1Y, ((data[4] >> 2) & 1) - ( data[4] & 1));
164
165 input_report_key(dev, BTN_TRIGGER, data[8] & 1);
166 input_report_key(dev, BTN_THUMB, data[8] & 2);
167 input_report_key(dev, BTN_TOP, data[8] & 4);
168 input_report_key(dev, BTN_PINKIE, data[7] & 1);
169
170 input_sync(dev);
171
172 return;
173 }
174 }
175
176
177 /*
178 * a3d_timer() reads and analyzes A3D joystick data.
179 */
180
181 static void a3d_timer(unsigned long private)
182 {
183 struct a3d *a3d = (void *) private;
184 unsigned char data[A3D_MAX_LENGTH];
185 a3d->reads++;
186 if (a3d_read_packet(a3d->gameport, a3d->length, data) != a3d->length
187 || data[0] != a3d->mode || a3d_csum(data, a3d->length))
188 a3d->bads++; else a3d_read(a3d, data);
189 mod_timer(&a3d->timer, jiffies + A3D_REFRESH_TIME);
190 }
191
192 /*
193 * a3d_adc_cooked_read() copies the acis and button data to the
194 * callers arrays. It could do the read itself, but the caller could
195 * call this more than 50 times a second, which would use too much CPU.
196 */
197
198 int a3d_adc_cooked_read(struct gameport *gameport, int *axes, int *buttons)
199 {
200 struct a3d *a3d = gameport->driver;
201 int i;
202 for (i = 0; i < 4; i++)
203 axes[i] = (a3d->axes[i] < 254) ? a3d->axes[i] : -1;
204 *buttons = a3d->buttons;
205 return 0;
206 }
207
208 /*
209 * a3d_adc_open() is the gameport open routine. It refuses to serve
210 * any but cooked data.
211 */
212
213 int a3d_adc_open(struct gameport *gameport, int mode)
214 {
215 struct a3d *a3d = gameport->driver;
216 if (mode != GAMEPORT_MODE_COOKED)
217 return -1;
218 if (!a3d->used++)
219 mod_timer(&a3d->timer, jiffies + A3D_REFRESH_TIME);
220 return 0;
221 }
222
223 /*
224 * a3d_adc_close() is a callback from the input close routine.
225 */
226
227 static void a3d_adc_close(struct gameport *gameport)
228 {
229 struct a3d *a3d = gameport->driver;
230 if (!--a3d->used)
231 del_timer(&a3d->timer);
232 }
233
234 /*
235 * a3d_open() is a callback from the input open routine.
236 */
237
238 static int a3d_open(struct input_dev *dev)
239 {
240 struct a3d *a3d = dev->private;
241 if (!a3d->used++)
242 mod_timer(&a3d->timer, jiffies + A3D_REFRESH_TIME);
243 return 0;
244 }
245
246 /*
247 * a3d_close() is a callback from the input close routine.
248 */
249
250 static void a3d_close(struct input_dev *dev)
251 {
252 struct a3d *a3d = dev->private;
253 if (!--a3d->used)
254 del_timer(&a3d->timer);
255 }
256
257 /*
258 * a3d_connect() probes for A3D joysticks.
259 */
260
261 static void a3d_connect(struct gameport *gameport, struct gameport_dev *dev)
262 {
263 struct a3d *a3d;
264 unsigned char data[A3D_MAX_LENGTH];
265 int i;
266
267 if (!(a3d = kmalloc(sizeof(struct a3d), GFP_KERNEL)))
268 return;
269 memset(a3d, 0, sizeof(struct a3d));
270
271 gameport->private = a3d;
272
273 a3d->gameport = gameport;
274 init_timer(&a3d->timer);
275 a3d->timer.data = (long) a3d;
276 a3d->timer.function = a3d_timer;
277
278 if (gameport_open(gameport, dev, GAMEPORT_MODE_RAW))
279 goto fail1;
280
281 i = a3d_read_packet(gameport, A3D_MAX_LENGTH, data);
282
283 if (!i || a3d_csum(data, i))
284 goto fail2;
285
286 a3d->mode = data[0];
287
288 if (!a3d->mode || a3d->mode > 5) {
289 printk(KERN_WARNING "a3d.c: Unknown A3D device detected "
290 "(%s, id=%d), contact <vojtech@ucw.cz>\n", gameport->phys, a3d->mode);
291 goto fail2;
292 }
293
294 sprintf(a3d->phys, "%s/input0", gameport->phys);
295 sprintf(a3d->adcphys, "%s/gameport0", gameport->phys);
296
297 if (a3d->mode == A3D_MODE_PXL) {
298
299 int axes[] = { ABS_X, ABS_Y, ABS_THROTTLE, ABS_RUDDER };
300
301 a3d->length = 33;
302
303 init_input_dev(&a3d->dev);
304
305 a3d->dev.evbit[0] |= BIT(EV_ABS) | BIT(EV_KEY) | BIT(EV_REL);
306 a3d->dev.relbit[0] |= BIT(REL_X) | BIT(REL_Y);
307 a3d->dev.absbit[0] |= BIT(ABS_X) | BIT(ABS_Y) | BIT(ABS_THROTTLE) | BIT(ABS_RUDDER)
308 | BIT(ABS_HAT0X) | BIT(ABS_HAT0Y) | BIT(ABS_HAT1X) | BIT(ABS_HAT1Y);
309
310 a3d->dev.keybit[LONG(BTN_MOUSE)] |= BIT(BTN_RIGHT) | BIT(BTN_LEFT) | BIT(BTN_MIDDLE)
311 | BIT(BTN_SIDE) | BIT(BTN_EXTRA);
312
313 a3d->dev.keybit[LONG(BTN_JOYSTICK)] |= BIT(BTN_TRIGGER) | BIT(BTN_THUMB) | BIT(BTN_TOP) | BIT(BTN_PINKIE);
314
315 a3d_read(a3d, data);
316
317 for (i = 0; i < 4; i++) {
318 if (i < 2) {
319 a3d->dev.absmin[axes[i]] = 48;
320 a3d->dev.absmax[axes[i]] = a3d->dev.abs[axes[i]] * 2 - 48;
321 a3d->dev.absflat[axes[i]] = 8;
322 } else {
323 a3d->dev.absmin[axes[i]] = 2;
324 a3d->dev.absmax[axes[i]] = 253;
325 }
326 a3d->dev.absmin[ABS_HAT0X + i] = -1;
327 a3d->dev.absmax[ABS_HAT0X + i] = 1;
328 }
329
330 } else {
331 a3d->length = 29;
332
333 init_input_dev(&a3d->dev);
334
335 a3d->dev.evbit[0] |= BIT(EV_KEY) | BIT(EV_REL);
336 a3d->dev.relbit[0] |= BIT(REL_X) | BIT(REL_Y);
337 a3d->dev.keybit[LONG(BTN_MOUSE)] |= BIT(BTN_RIGHT) | BIT(BTN_LEFT) | BIT(BTN_MIDDLE);
338
339 a3d->adc.driver = a3d;
340 a3d->adc.open = a3d_adc_open;
341 a3d->adc.close = a3d_adc_close;
342 a3d->adc.cooked_read = a3d_adc_cooked_read;
343 a3d->adc.fuzz = 1;
344
345 a3d->adc.name = a3d_names[a3d->mode];
346 a3d->adc.phys = a3d->adcphys;
347 a3d->adc.id.bustype = BUS_GAMEPORT;
348 a3d->adc.id.vendor = GAMEPORT_ID_VENDOR_MADCATZ;
349 a3d->adc.id.product = a3d->mode;
350 a3d->adc.id.version = 0x0100;
351
352 a3d_read(a3d, data);
353
354 gameport_register_port(&a3d->adc);
355 printk(KERN_INFO "gameport: %s on %s\n", a3d_names[a3d->mode], gameport->phys);
356 }
357
358 a3d->dev.private = a3d;
359 a3d->dev.open = a3d_open;
360 a3d->dev.close = a3d_close;
361
362 a3d->dev.name = a3d_names[a3d->mode];
363 a3d->dev.phys = a3d->phys;
364 a3d->dev.id.bustype = BUS_GAMEPORT;
365 a3d->dev.id.vendor = GAMEPORT_ID_VENDOR_MADCATZ;
366 a3d->dev.id.product = a3d->mode;
367 a3d->dev.id.version = 0x0100;
368
369 input_register_device(&a3d->dev);
370 printk(KERN_INFO "input: %s on %s\n", a3d_names[a3d->mode], a3d->phys);
371
372 return;
373 fail2: gameport_close(gameport);
374 fail1: kfree(a3d);
375 }
376
377 static void a3d_disconnect(struct gameport *gameport)
378 {
379
380 struct a3d *a3d = gameport->private;
381 input_unregister_device(&a3d->dev);
382 if (a3d->mode < A3D_MODE_PXL)
383 gameport_unregister_port(&a3d->adc);
384 gameport_close(gameport);
385 kfree(a3d);
386 }
387
388 static struct gameport_dev a3d_dev = {
389 .connect = a3d_connect,
390 .disconnect = a3d_disconnect,
391 };
392
393 int __init a3d_init(void)
394 {
395 gameport_register_device(&a3d_dev);
396 return 0;
397 }
398
399 void __exit a3d_exit(void)
400 {
401 gameport_unregister_device(&a3d_dev);
402 }
403
404 module_init(a3d_init);
405 module_exit(a3d_exit);
406
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