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1da177e4 LT |
1 | /* |
2 | * Copyright (c) 1998-2005 Vojtech Pavlik | |
3 | */ | |
4 | ||
5 | /* | |
6 | * Logitech ADI joystick family driver for Linux | |
7 | */ | |
8 | ||
9 | /* | |
10 | * This program is free software; you can redistribute it and/or modify | |
11 | * it under the terms of the GNU General Public License as published by | |
12 | * the Free Software Foundation; either version 2 of the License, or | |
13 | * (at your option) any later version. | |
14 | * | |
15 | * This program is distributed in the hope that it will be useful, | |
16 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
18 | * GNU General Public License for more details. | |
19 | * | |
20 | * You should have received a copy of the GNU General Public License | |
21 | * along with this program; if not, write to the Free Software | |
22 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
23 | * | |
24 | * Should you need to contact me, the author, you can do so either by | |
25 | * e-mail - mail your message to <vojtech@ucw.cz>, or by paper mail: | |
26 | * Vojtech Pavlik, Simunkova 1594, Prague 8, 182 00 Czech Republic | |
27 | */ | |
28 | ||
29 | #include <linux/delay.h> | |
30 | #include <linux/kernel.h> | |
31 | #include <linux/module.h> | |
32 | #include <linux/string.h> | |
33 | #include <linux/slab.h> | |
34 | #include <linux/input.h> | |
35 | #include <linux/gameport.h> | |
36 | #include <linux/init.h> | |
37 | ||
38 | #define DRIVER_DESC "Logitech ADI joystick family driver" | |
39 | ||
40 | MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>"); | |
41 | MODULE_DESCRIPTION(DRIVER_DESC); | |
42 | MODULE_LICENSE("GPL"); | |
43 | ||
44 | /* | |
45 | * Times, array sizes, flags, ids. | |
46 | */ | |
47 | ||
48 | #define ADI_MAX_START 200 /* Trigger to packet timeout [200us] */ | |
49 | #define ADI_MAX_STROBE 40 /* Single bit timeout [40us] */ | |
50 | #define ADI_INIT_DELAY 10 /* Delay after init packet [10ms] */ | |
51 | #define ADI_DATA_DELAY 4 /* Delay after data packet [4ms] */ | |
52 | ||
53 | #define ADI_MAX_LENGTH 256 | |
54 | #define ADI_MIN_LENGTH 8 | |
55 | #define ADI_MIN_LEN_LENGTH 10 | |
56 | #define ADI_MIN_ID_LENGTH 66 | |
57 | #define ADI_MAX_NAME_LENGTH 48 | |
58 | #define ADI_MAX_CNAME_LENGTH 16 | |
59 | #define ADI_MAX_PHYS_LENGTH 64 | |
60 | ||
61 | #define ADI_FLAG_HAT 0x04 | |
62 | #define ADI_FLAG_10BIT 0x08 | |
63 | ||
64 | #define ADI_ID_TPD 0x01 | |
65 | #define ADI_ID_WGP 0x06 | |
66 | #define ADI_ID_WGPE 0x08 | |
67 | #define ADI_ID_MAX 0x0a | |
68 | ||
69 | /* | |
70 | * Names, buttons, axes ... | |
71 | */ | |
72 | ||
73 | static char *adi_names[] = { "WingMan Extreme Digital", "ThunderPad Digital", "SideCar", "CyberMan 2", | |
74 | "WingMan Interceptor", "WingMan Formula", "WingMan GamePad", | |
75 | "WingMan Extreme Digital 3D", "WingMan GamePad Extreme", | |
76 | "WingMan GamePad USB", "Unknown Device %#x" }; | |
77 | ||
78 | static char adi_wmgpe_abs[] = { ABS_X, ABS_Y, ABS_HAT0X, ABS_HAT0Y }; | |
79 | static char adi_wmi_abs[] = { ABS_X, ABS_Y, ABS_THROTTLE, ABS_HAT0X, ABS_HAT0Y, ABS_HAT1X, ABS_HAT1Y, ABS_HAT2X, ABS_HAT2Y }; | |
80 | static char adi_wmed3d_abs[] = { ABS_X, ABS_Y, ABS_THROTTLE, ABS_RZ, ABS_HAT0X, ABS_HAT0Y }; | |
81 | static char adi_cm2_abs[] = { ABS_X, ABS_Y, ABS_Z, ABS_RX, ABS_RY, ABS_RZ }; | |
82 | static char adi_wmf_abs[] = { ABS_WHEEL, ABS_GAS, ABS_BRAKE, ABS_HAT0X, ABS_HAT0Y, ABS_HAT1X, ABS_HAT1Y, ABS_HAT2X, ABS_HAT2Y }; | |
83 | ||
84 | static short adi_wmgpe_key[] = { BTN_A, BTN_B, BTN_C, BTN_X, BTN_Y, BTN_Z, BTN_TL, BTN_TR, BTN_START, BTN_MODE, BTN_SELECT }; | |
85 | static short adi_wmi_key[] = { BTN_TRIGGER, BTN_TOP, BTN_THUMB, BTN_TOP2, BTN_BASE, BTN_BASE2, BTN_BASE3, BTN_BASE4, BTN_EXTRA }; | |
86 | static short adi_wmed3d_key[] = { BTN_TRIGGER, BTN_THUMB, BTN_THUMB2, BTN_TOP, BTN_TOP2, BTN_BASE, BTN_BASE2 }; | |
87 | static short adi_cm2_key[] = { BTN_1, BTN_2, BTN_3, BTN_4, BTN_5, BTN_6, BTN_7, BTN_8 }; | |
88 | ||
89 | static char* adi_abs[] = { adi_wmi_abs, adi_wmgpe_abs, adi_wmf_abs, adi_cm2_abs, adi_wmi_abs, adi_wmf_abs, | |
90 | adi_wmgpe_abs, adi_wmed3d_abs, adi_wmgpe_abs, adi_wmgpe_abs, adi_wmi_abs }; | |
91 | ||
92 | static short* adi_key[] = { adi_wmi_key, adi_wmgpe_key, adi_cm2_key, adi_cm2_key, adi_wmi_key, adi_cm2_key, | |
93 | adi_wmgpe_key, adi_wmed3d_key, adi_wmgpe_key, adi_wmgpe_key, adi_wmi_key }; | |
94 | ||
95 | /* | |
96 | * Hat to axis conversion arrays. | |
97 | */ | |
98 | ||
99 | static struct { | |
100 | int x; | |
101 | int y; | |
102 | } adi_hat_to_axis[] = {{ 0, 0}, { 0,-1}, { 1,-1}, { 1, 0}, { 1, 1}, { 0, 1}, {-1, 1}, {-1, 0}, {-1,-1}}; | |
103 | ||
104 | /* | |
105 | * Per-port information. | |
106 | */ | |
107 | ||
108 | struct adi { | |
109 | struct input_dev dev; | |
110 | int length; | |
111 | int ret; | |
112 | int idx; | |
113 | unsigned char id; | |
114 | char buttons; | |
115 | char axes10; | |
116 | char axes8; | |
117 | signed char pad; | |
118 | char hats; | |
119 | char *abs; | |
120 | short *key; | |
121 | char name[ADI_MAX_NAME_LENGTH]; | |
122 | char cname[ADI_MAX_CNAME_LENGTH]; | |
123 | char phys[ADI_MAX_PHYS_LENGTH]; | |
124 | unsigned char data[ADI_MAX_LENGTH]; | |
125 | }; | |
126 | ||
127 | struct adi_port { | |
128 | struct gameport *gameport; | |
129 | struct adi adi[2]; | |
130 | int bad; | |
131 | int reads; | |
132 | }; | |
133 | ||
134 | /* | |
135 | * adi_read_packet() reads a Logitech ADI packet. | |
136 | */ | |
137 | ||
138 | static void adi_read_packet(struct adi_port *port) | |
139 | { | |
140 | struct adi *adi = port->adi; | |
141 | struct gameport *gameport = port->gameport; | |
142 | unsigned char u, v, w, x, z; | |
143 | int t[2], s[2], i; | |
144 | unsigned long flags; | |
145 | ||
146 | for (i = 0; i < 2; i++) { | |
147 | adi[i].ret = -1; | |
148 | t[i] = gameport_time(gameport, ADI_MAX_START); | |
149 | s[i] = 0; | |
150 | } | |
151 | ||
152 | local_irq_save(flags); | |
153 | ||
154 | gameport_trigger(gameport); | |
155 | v = z = gameport_read(gameport); | |
156 | ||
157 | do { | |
158 | u = v; | |
159 | w = u ^ (v = x = gameport_read(gameport)); | |
160 | for (i = 0; i < 2; i++, w >>= 2, x >>= 2) { | |
161 | t[i]--; | |
162 | if ((w & 0x30) && s[i]) { | |
163 | if ((w & 0x30) < 0x30 && adi[i].ret < ADI_MAX_LENGTH && t[i] > 0) { | |
164 | adi[i].data[++adi[i].ret] = w; | |
165 | t[i] = gameport_time(gameport, ADI_MAX_STROBE); | |
166 | } else t[i] = 0; | |
167 | } else if (!(x & 0x30)) s[i] = 1; | |
168 | } | |
169 | } while (t[0] > 0 || t[1] > 0); | |
170 | ||
171 | local_irq_restore(flags); | |
172 | ||
173 | return; | |
174 | } | |
175 | ||
176 | /* | |
177 | * adi_move_bits() detects a possible 2-stream mode, and moves | |
178 | * the bits accordingly. | |
179 | */ | |
180 | ||
181 | static void adi_move_bits(struct adi_port *port, int length) | |
182 | { | |
183 | int i; | |
184 | struct adi *adi = port->adi; | |
185 | ||
186 | adi[0].idx = adi[1].idx = 0; | |
187 | ||
188 | if (adi[0].ret <= 0 || adi[1].ret <= 0) return; | |
189 | if (adi[0].data[0] & 0x20 || ~adi[1].data[0] & 0x20) return; | |
190 | ||
191 | for (i = 1; i <= adi[1].ret; i++) | |
192 | adi[0].data[((length - 1) >> 1) + i + 1] = adi[1].data[i]; | |
193 | ||
194 | adi[0].ret += adi[1].ret; | |
195 | adi[1].ret = -1; | |
196 | } | |
197 | ||
198 | /* | |
199 | * adi_get_bits() gathers bits from the data packet. | |
200 | */ | |
201 | ||
202 | static inline int adi_get_bits(struct adi *adi, int count) | |
203 | { | |
204 | int bits = 0; | |
205 | int i; | |
206 | if ((adi->idx += count) > adi->ret) return 0; | |
207 | for (i = 0; i < count; i++) | |
208 | bits |= ((adi->data[adi->idx - i] >> 5) & 1) << i; | |
209 | return bits; | |
210 | } | |
211 | ||
212 | /* | |
213 | * adi_decode() decodes Logitech joystick data into input events. | |
214 | */ | |
215 | ||
216 | static int adi_decode(struct adi *adi) | |
217 | { | |
218 | struct input_dev *dev = &adi->dev; | |
219 | char *abs = adi->abs; | |
220 | short *key = adi->key; | |
221 | int i, t; | |
222 | ||
223 | if (adi->ret < adi->length || adi->id != (adi_get_bits(adi, 4) | (adi_get_bits(adi, 4) << 4))) | |
224 | return -1; | |
225 | ||
226 | for (i = 0; i < adi->axes10; i++) | |
227 | input_report_abs(dev, *abs++, adi_get_bits(adi, 10)); | |
228 | ||
229 | for (i = 0; i < adi->axes8; i++) | |
230 | input_report_abs(dev, *abs++, adi_get_bits(adi, 8)); | |
231 | ||
232 | for (i = 0; i < adi->buttons && i < 63; i++) { | |
233 | if (i == adi->pad) { | |
234 | t = adi_get_bits(adi, 4); | |
235 | input_report_abs(dev, *abs++, ((t >> 2) & 1) - ( t & 1)); | |
236 | input_report_abs(dev, *abs++, ((t >> 1) & 1) - ((t >> 3) & 1)); | |
237 | } | |
238 | input_report_key(dev, *key++, adi_get_bits(adi, 1)); | |
239 | } | |
240 | ||
241 | for (i = 0; i < adi->hats; i++) { | |
242 | if ((t = adi_get_bits(adi, 4)) > 8) t = 0; | |
243 | input_report_abs(dev, *abs++, adi_hat_to_axis[t].x); | |
244 | input_report_abs(dev, *abs++, adi_hat_to_axis[t].y); | |
245 | } | |
246 | ||
247 | for (i = 63; i < adi->buttons; i++) | |
248 | input_report_key(dev, *key++, adi_get_bits(adi, 1)); | |
249 | ||
250 | input_sync(dev); | |
251 | ||
252 | return 0; | |
253 | } | |
254 | ||
255 | /* | |
256 | * adi_read() reads the data packet and decodes it. | |
257 | */ | |
258 | ||
259 | static int adi_read(struct adi_port *port) | |
260 | { | |
261 | int i; | |
262 | int result = 0; | |
263 | ||
264 | adi_read_packet(port); | |
265 | adi_move_bits(port, port->adi[0].length); | |
266 | ||
267 | for (i = 0; i < 2; i++) | |
268 | if (port->adi[i].length) | |
269 | result |= adi_decode(port->adi + i); | |
270 | ||
271 | return result; | |
272 | } | |
273 | ||
274 | /* | |
275 | * adi_poll() repeatedly polls the Logitech joysticks. | |
276 | */ | |
277 | ||
278 | static void adi_poll(struct gameport *gameport) | |
279 | { | |
280 | struct adi_port *port = gameport_get_drvdata(gameport); | |
281 | ||
282 | port->bad -= adi_read(port); | |
283 | port->reads++; | |
284 | } | |
285 | ||
286 | /* | |
287 | * adi_open() is a callback from the input open routine. | |
288 | */ | |
289 | ||
290 | static int adi_open(struct input_dev *dev) | |
291 | { | |
292 | struct adi_port *port = dev->private; | |
293 | ||
294 | gameport_start_polling(port->gameport); | |
295 | return 0; | |
296 | } | |
297 | ||
298 | /* | |
299 | * adi_close() is a callback from the input close routine. | |
300 | */ | |
301 | ||
302 | static void adi_close(struct input_dev *dev) | |
303 | { | |
304 | struct adi_port *port = dev->private; | |
305 | ||
306 | gameport_stop_polling(port->gameport); | |
307 | } | |
308 | ||
309 | /* | |
310 | * adi_init_digital() sends a trigger & delay sequence | |
311 | * to reset and initialize a Logitech joystick into digital mode. | |
312 | */ | |
313 | ||
314 | static void adi_init_digital(struct gameport *gameport) | |
315 | { | |
316 | int seq[] = { 4, -2, -3, 10, -6, -11, -7, -9, 11, 0 }; | |
317 | int i; | |
318 | ||
319 | for (i = 0; seq[i]; i++) { | |
320 | gameport_trigger(gameport); | |
321 | if (seq[i] > 0) msleep(seq[i]); | |
322 | if (seq[i] < 0) { | |
323 | mdelay(-seq[i]); | |
324 | udelay(-seq[i]*14); /* It looks like mdelay() is off by approx 1.4% */ | |
325 | } | |
326 | } | |
327 | } | |
328 | ||
329 | static void adi_id_decode(struct adi *adi, struct adi_port *port) | |
330 | { | |
331 | int i, t; | |
332 | ||
333 | if (adi->ret < ADI_MIN_ID_LENGTH) /* Minimum ID packet length */ | |
334 | return; | |
335 | ||
336 | if (adi->ret < (t = adi_get_bits(adi, 10))) { | |
337 | printk(KERN_WARNING "adi: Short ID packet: reported: %d != read: %d\n", t, adi->ret); | |
338 | return; | |
339 | } | |
340 | ||
341 | adi->id = adi_get_bits(adi, 4) | (adi_get_bits(adi, 4) << 4); | |
342 | ||
343 | if ((t = adi_get_bits(adi, 4)) & ADI_FLAG_HAT) adi->hats++; | |
344 | ||
345 | adi->length = adi_get_bits(adi, 10); | |
346 | ||
347 | if (adi->length >= ADI_MAX_LENGTH || adi->length < ADI_MIN_LENGTH) { | |
348 | printk(KERN_WARNING "adi: Bad data packet length (%d).\n", adi->length); | |
349 | adi->length = 0; | |
350 | return; | |
351 | } | |
352 | ||
353 | adi->axes8 = adi_get_bits(adi, 4); | |
354 | adi->buttons = adi_get_bits(adi, 6); | |
355 | ||
356 | if (adi_get_bits(adi, 6) != 8 && adi->hats) { | |
357 | printk(KERN_WARNING "adi: Other than 8-dir POVs not supported yet.\n"); | |
358 | adi->length = 0; | |
359 | return; | |
360 | } | |
361 | ||
362 | adi->buttons += adi_get_bits(adi, 6); | |
363 | adi->hats += adi_get_bits(adi, 4); | |
364 | ||
365 | i = adi_get_bits(adi, 4); | |
366 | ||
367 | if (t & ADI_FLAG_10BIT) { | |
368 | adi->axes10 = adi->axes8 - i; | |
369 | adi->axes8 = i; | |
370 | } | |
371 | ||
372 | t = adi_get_bits(adi, 4); | |
373 | ||
374 | for (i = 0; i < t; i++) | |
375 | adi->cname[i] = adi_get_bits(adi, 8); | |
376 | adi->cname[i] = 0; | |
377 | ||
378 | t = 8 + adi->buttons + adi->axes10 * 10 + adi->axes8 * 8 + adi->hats * 4; | |
379 | if (adi->length != t && adi->length != t + (t & 1)) { | |
380 | printk(KERN_WARNING "adi: Expected length %d != data length %d\n", t, adi->length); | |
381 | adi->length = 0; | |
382 | return; | |
383 | } | |
384 | ||
385 | switch (adi->id) { | |
386 | case ADI_ID_TPD: | |
387 | adi->pad = 4; | |
388 | adi->buttons -= 4; | |
389 | break; | |
390 | case ADI_ID_WGP: | |
391 | adi->pad = 0; | |
392 | adi->buttons -= 4; | |
393 | break; | |
394 | default: | |
395 | adi->pad = -1; | |
396 | break; | |
397 | } | |
398 | } | |
399 | ||
400 | static void adi_init_input(struct adi *adi, struct adi_port *port, int half) | |
401 | { | |
402 | int i, t; | |
403 | char buf[ADI_MAX_NAME_LENGTH]; | |
404 | ||
405 | if (!adi->length) return; | |
406 | ||
407 | init_input_dev(&adi->dev); | |
408 | ||
409 | t = adi->id < ADI_ID_MAX ? adi->id : ADI_ID_MAX; | |
410 | ||
411 | snprintf(buf, ADI_MAX_PHYS_LENGTH, adi_names[t], adi->id); | |
412 | snprintf(adi->name, ADI_MAX_NAME_LENGTH, "Logitech %s", buf); | |
413 | snprintf(adi->phys, ADI_MAX_PHYS_LENGTH, "%s/input%d", port->gameport->phys, half); | |
414 | ||
415 | adi->abs = adi_abs[t]; | |
416 | adi->key = adi_key[t]; | |
417 | ||
418 | adi->dev.open = adi_open; | |
419 | adi->dev.close = adi_close; | |
420 | ||
421 | adi->dev.name = adi->name; | |
422 | adi->dev.phys = adi->phys; | |
423 | adi->dev.id.bustype = BUS_GAMEPORT; | |
424 | adi->dev.id.vendor = GAMEPORT_ID_VENDOR_LOGITECH; | |
425 | adi->dev.id.product = adi->id; | |
426 | adi->dev.id.version = 0x0100; | |
427 | ||
428 | adi->dev.private = port; | |
429 | adi->dev.evbit[0] = BIT(EV_KEY) | BIT(EV_ABS); | |
430 | ||
431 | for (i = 0; i < adi->axes10 + adi->axes8 + (adi->hats + (adi->pad != -1)) * 2; i++) | |
432 | set_bit(adi->abs[i], adi->dev.absbit); | |
433 | ||
434 | for (i = 0; i < adi->buttons; i++) | |
435 | set_bit(adi->key[i], adi->dev.keybit); | |
436 | } | |
437 | ||
438 | static void adi_init_center(struct adi *adi) | |
439 | { | |
440 | int i, t, x; | |
441 | ||
442 | if (!adi->length) | |
443 | return; | |
444 | ||
445 | for (i = 0; i < adi->axes10 + adi->axes8 + (adi->hats + (adi->pad != -1)) * 2; i++) { | |
446 | ||
447 | t = adi->abs[i]; | |
448 | x = adi->dev.abs[t]; | |
449 | ||
450 | if (t == ABS_THROTTLE || t == ABS_RUDDER || adi->id == ADI_ID_WGPE) | |
451 | x = i < adi->axes10 ? 512 : 128; | |
452 | ||
453 | if (i < adi->axes10) | |
454 | input_set_abs_params(&adi->dev, t, 64, x * 2 - 64, 2, 16); | |
455 | else if (i < adi->axes10 + adi->axes8) | |
456 | input_set_abs_params(&adi->dev, t, 48, x * 2 - 48, 1, 16); | |
457 | else | |
458 | input_set_abs_params(&adi->dev, t, -1, 1, 0, 0); | |
459 | } | |
460 | } | |
461 | ||
462 | /* | |
463 | * adi_connect() probes for Logitech ADI joysticks. | |
464 | */ | |
465 | ||
466 | static int adi_connect(struct gameport *gameport, struct gameport_driver *drv) | |
467 | { | |
468 | struct adi_port *port; | |
469 | int i; | |
470 | int err; | |
471 | ||
472 | if (!(port = kcalloc(1, sizeof(struct adi_port), GFP_KERNEL))) | |
473 | return -ENOMEM; | |
474 | ||
475 | port->gameport = gameport; | |
476 | ||
477 | gameport_set_drvdata(gameport, port); | |
478 | ||
479 | err = gameport_open(gameport, drv, GAMEPORT_MODE_RAW); | |
480 | if (err) { | |
481 | kfree(port); | |
482 | return err; | |
483 | } | |
484 | ||
485 | adi_init_digital(gameport); | |
486 | adi_read_packet(port); | |
487 | ||
488 | if (port->adi[0].ret >= ADI_MIN_LEN_LENGTH) | |
489 | adi_move_bits(port, adi_get_bits(port->adi, 10)); | |
490 | ||
491 | for (i = 0; i < 2; i++) { | |
492 | adi_id_decode(port->adi + i, port); | |
493 | adi_init_input(port->adi + i, port, i); | |
494 | } | |
495 | ||
496 | if (!port->adi[0].length && !port->adi[1].length) { | |
497 | gameport_close(gameport); | |
498 | kfree(port); | |
499 | return -ENODEV; | |
500 | } | |
501 | ||
502 | gameport_set_poll_handler(gameport, adi_poll); | |
503 | gameport_set_poll_interval(gameport, 20); | |
504 | ||
505 | msleep(ADI_INIT_DELAY); | |
506 | if (adi_read(port)) { | |
507 | msleep(ADI_DATA_DELAY); | |
508 | adi_read(port); | |
509 | } | |
510 | ||
511 | for (i = 0; i < 2; i++) | |
512 | if (port->adi[i].length > 0) { | |
513 | adi_init_center(port->adi + i); | |
514 | input_register_device(&port->adi[i].dev); | |
515 | printk(KERN_INFO "input: %s [%s] on %s\n", | |
516 | port->adi[i].name, port->adi[i].cname, gameport->phys); | |
517 | } | |
518 | ||
519 | return 0; | |
520 | } | |
521 | ||
522 | static void adi_disconnect(struct gameport *gameport) | |
523 | { | |
524 | int i; | |
525 | struct adi_port *port = gameport_get_drvdata(gameport); | |
526 | ||
527 | for (i = 0; i < 2; i++) | |
528 | if (port->adi[i].length > 0) | |
529 | input_unregister_device(&port->adi[i].dev); | |
530 | gameport_close(gameport); | |
531 | gameport_set_drvdata(gameport, NULL); | |
532 | kfree(port); | |
533 | } | |
534 | ||
535 | /* | |
536 | * The gameport device structure. | |
537 | */ | |
538 | ||
539 | static struct gameport_driver adi_drv = { | |
540 | .driver = { | |
541 | .name = "adi", | |
542 | }, | |
543 | .description = DRIVER_DESC, | |
544 | .connect = adi_connect, | |
545 | .disconnect = adi_disconnect, | |
546 | }; | |
547 | ||
548 | static int __init adi_init(void) | |
549 | { | |
550 | gameport_register_driver(&adi_drv); | |
551 | return 0; | |
552 | } | |
553 | ||
554 | static void __exit adi_exit(void) | |
555 | { | |
556 | gameport_unregister_driver(&adi_drv); | |
557 | } | |
558 | ||
559 | module_init(adi_init); | |
560 | module_exit(adi_exit); |