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Import 2.4.0-test2pre7
[davej-history.git] / drivers / char / joystick / analog.c
blob1ac676fa79a1dd25564c48813cc7ff2e8a6a78af
1 /*
2 * $Id: analog.c,v 1.52 2000/06/07 13:07:06 vojtech Exp $
3 *
4 * Copyright (c) 1996-2000 Vojtech Pavlik
5 *
6 * Sponsored by SuSE
7 */
8
9 /*
10 * Analog joystick and gamepad driver for Linux
11 */
12
13 /*
14 * This program is free software; you can redistribute it and/or modify
15 * it under the terms of the GNU General Public License as published by
16 * the Free Software Foundation; either version 2 of the License, or
17 * (at your option) any later version.
18 *
19 * This program is distributed in the hope that it will be useful,
20 * but WITHOUT ANY WARRANTY; without even the implied warranty of
21 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
22 * GNU General Public License for more details.
23 *
24 * You should have received a copy of the GNU General Public License
25 * along with this program; if not, write to the Free Software
26 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
27 *
28 * Should you need to contact me, the author, you can do so either by
29 * e-mail - mail your message to <vojtech@suse.cz>, or by paper mail:
30 * Vojtech Pavlik, Ucitelska 1576, Prague 8, 182 00 Czech Republic
31 */
32
33 #include <linux/delay.h>
34 #include <linux/kernel.h>
35 #include <linux/module.h>
36 #include <linux/malloc.h>
37 #include <linux/bitops.h>
38 #include <linux/init.h>
39 #include <linux/input.h>
40 #include <linux/gameport.h>
41
42 MODULE_AUTHOR("Vojtech Pavlik <vojtech@suse.cz>");
43
44 /*
45 * Option parsing.
46 */
47
48 MODULE_PARM(js,"1-16s");
49
50 #define ANALOG_PORTS 16
51
52 static char *js[ANALOG_PORTS];
53 static int analog_options[ANALOG_PORTS];
54
55 /*
56 * Times, feature definitions.
57 */
58
59 #define ANALOG_RUDDER 0x00004
60 #define ANALOG_THROTTLE 0x00008
61 #define ANALOG_AXES_STD 0x0000f
62 #define ANALOG_BTNS_STD 0x000f0
63
64 #define ANALOG_BTNS_CHF 0x00100
65 #define ANALOG_HAT1_CHF 0x00200
66 #define ANALOG_HAT2_CHF 0x00400
67 #define ANALOG_HAT_FCS 0x00800
68 #define ANALOG_HATS_ALL 0x00e00
69 #define ANALOG_BTN_TL 0x01000
70 #define ANALOG_BTN_TR 0x02000
71 #define ANALOG_BTN_TL2 0x04000
72 #define ANALOG_BTN_TR2 0x08000
73 #define ANALOG_BTNS_TLR 0x03000
74 #define ANALOG_BTNS_TLR2 0x0c000
75 #define ANALOG_BTNS_GAMEPAD 0x0f000
76
77 #define ANALOG_HBTN_CHF 0x10000
78 #define ANALOG_ANY_CHF 0x10700
79 #define ANALOG_SAITEK 0x20000
80 #define ANALOG_EXTENSIONS 0x7ff00
81 #define ANALOG_GAMEPAD 0x80000
82
83 #define ANALOG_MAX_TIME 3 /* 3 ms */
84 #define ANALOG_LOOP_TIME 2000 /* 2 * loop */
85 #define ANALOG_REFRESH_TIME HZ/100 /* 10 ms */
86 #define ANALOG_SAITEK_DELAY 200 /* 200 us */
87 #define ANALOG_SAITEK_TIME 2000 /* 2000 us */
88 #define ANALOG_AXIS_TIME 2 /* 2 * refresh */
89 #define ANALOG_INIT_RETRIES 8 /* 8 times */
90 #define ANALOG_FUZZ_BITS 2 /* 2 bit more */
91 #define ANALOG_FUZZ_MAGIC 36 /* 36 u*ms/loop */
92
93 #define ANALOG_MAX_NAME_LENGTH 128
94
95 static short analog_axes[] = { ABS_X, ABS_Y, ABS_RUDDER, ABS_THROTTLE };
96 static short analog_hats[] = { ABS_HAT0X, ABS_HAT0Y, ABS_HAT1X, ABS_HAT1Y, ABS_HAT2X, ABS_HAT2Y };
97 static short analog_pads[] = { BTN_Y, BTN_Z, BTN_TL, BTN_TR };
98 static short analog_exts[] = { ANALOG_HAT1_CHF, ANALOG_HAT2_CHF, ANALOG_HAT_FCS };
99 static short analog_pad_btn[] = { BTN_A, BTN_B, BTN_C, BTN_X, BTN_TL2, BTN_TR2, BTN_SELECT, BTN_START, BTN_MODE, BTN_BASE };
100 static short analog_joy_btn[] = { BTN_TRIGGER, BTN_THUMB, BTN_TOP, BTN_TOP2, BTN_BASE, BTN_BASE2,
101 BTN_BASE3, BTN_BASE4, BTN_BASE5, BTN_BASE6 };
102
103 static unsigned char analog_chf[] = { 0xf, 0x0, 0x1, 0x9, 0x2, 0x4, 0xc, 0x8, 0x3, 0x5, 0xb, 0x7, 0xd, 0xe, 0xa, 0x6 };
104
105 struct analog {
106 struct input_dev dev;
107 int mask;
108 short *buttons;
109 char name[ANALOG_MAX_NAME_LENGTH];
110 };
111
112 struct analog_port {
113 struct gameport *gameport;
114 struct timer_list timer;
115 struct analog analog[2];
116 char mask;
117 char saitek;
118 char cooked;
119 int bads;
120 int reads;
121 int speed;
122 int loop;
123 int fuzz;
124 int axes[4];
125 int buttons;
126 int initial[4];
127 int used;
128 int axtime;
129 };
130
131 /*
132 * Time macros.
133 */
134
135 #ifdef __i386__
136 #ifdef CONFIG_X86_TSC
137 #define GET_TIME(x) __asm__ __volatile__ ( "rdtsc" : "=a" (x) : : "dx" )
138 #define DELTA(x,y) ((y)-(x))
139 #define TIME_NAME "TSC"
140 #else
141 #define GET_TIME(x) do { outb(0, 0x43); x = inb(0x40); x |= inb(0x40) << 8; } while (0)
142 #define DELTA(x,y) ((x)-(y)+((x)<(y)?1193180L/HZ:0))
143 #define TIME_NAME "PIT"
144 #endif
145 #elif __alpha__
146 #define GET_TIME(x) __asm__ __volatile__ ( "rpcc %0" : "=r" (x) )
147 #define DELTA(x,y) ((y)-(x))
148 #define TIME_NAME "PCC"
149 #endif
150
151 #ifndef GET_TIME
152 #define FAKE_TIME
153 static unsigned long analog_faketime = 0;
154 #define GET_TIME(x) do { x = analog_faketime++; } while(0)
155 #define DELTA(x,y) ((y)-(x))
156 #define TIME_NAME "Unreliable"
157 #endif
158
159 /*
160 * analog_decode() decodes analog joystick data and reports input events.
161 */
162
163 static void analog_decode(struct analog *analog, int *axes, int *initial, int buttons)
164 {
165 struct input_dev *dev = &analog->dev;
166 int i, j;
167
168 if (analog->mask & ANALOG_HAT_FCS)
169 for (i = 0; i < 4; i++)
170 if (axes[3] < ((initial[3] * ((i << 1) + 1)) >> 3)) {
171 buttons |= 1 << (i + 14);
172 break;
173 }
174
175 for (i = j = 0; i < 6; i++)
176 if (analog->mask & (0x10 << i))
177 input_report_key(dev, analog->buttons[j++], (buttons >> i) & 1);
178
179 if (analog->mask & ANALOG_HBTN_CHF)
180 for (i = 0; i < 4; i++)
181 input_report_key(dev, analog->buttons[j++], (buttons >> (i + 10)) & 1);
182
183 if (analog->mask & ANALOG_BTN_TL)
184 input_report_key(dev, analog_pads[0], axes[2] < (initial[2] >> 1));
185 if (analog->mask & ANALOG_BTN_TR)
186 input_report_key(dev, analog_pads[1], axes[3] < (initial[3] >> 1));
187 if (analog->mask & ANALOG_BTN_TL2)
188 input_report_key(dev, analog_pads[2], axes[2] > (initial[2] + (initial[2] >> 1)));
189 if (analog->mask & ANALOG_BTN_TR2)
190 input_report_key(dev, analog_pads[3], axes[3] > (initial[3] + (initial[3] >> 1)));
191
192 for (i = j = 0; i < 4; i++)
193 if (analog->mask & (1 << i))
194 input_report_abs(dev, analog_axes[j++], axes[i]);
195
196 for (i = j = 0; i < 3; i++)
197 if (analog->mask & analog_exts[i]) {
198 input_report_abs(dev, analog_hats[j++],
199 ((buttons >> ((i << 2) + 7)) & 1) - ((buttons >> ((i << 2) + 9)) & 1));
200 input_report_abs(dev, analog_hats[j++],
201 ((buttons >> ((i << 2) + 8)) & 1) - ((buttons >> ((i << 2) + 6)) & 1));
202 }
203 }
204
205 /*
206 * analog_cooked_read() reads analog joystick data.
207 */
208
209 static int analog_cooked_read(struct analog_port *port)
210 {
211 struct gameport *gameport = port->gameport;
212 unsigned int time[4], start, loop, now, loopout, timeout;
213 unsigned char data[4], this, last;
214 unsigned long flags;
215 int i, j;
216
217 loopout = (ANALOG_LOOP_TIME * port->loop) / 1000;
218 timeout = ANALOG_MAX_TIME * port->speed;
219
220 __save_flags(flags);
221 __cli();
222 gameport_trigger(gameport);
223 GET_TIME(now);
224 __restore_flags(flags);
225
226 start = now;
227 this = port->mask;
228 i = 0;
229
230 do {
231 loop = now;
232 last = this;
233
234 __cli();
235 this = gameport_read(gameport) & port->mask;
236 GET_TIME(now);
237 __restore_flags(flags);
238
239 if ((last ^ this) && (DELTA(loop, now) < loopout)) {
240 data[i] = last ^ this;
241 time[i] = now;
242 i++;
243 }
244
245 } while (this && (i < 4) && (DELTA(start, now) < timeout));
246
247 this <<= 4;
248
249 for (--i; i >= 0; i--) {
250 this |= data[i];
251 for (j = 0; j < 4; j++)
252 if (data[i] & (1 << j))
253 port->axes[j] = (DELTA(start, time[i]) << ANALOG_FUZZ_BITS) / port->loop;
254 }
255
256 return -(this != port->mask);
257 }
258
259 static int analog_button_read(struct analog_port *port, char saitek, char chf)
260 {
261 unsigned char u;
262 int t = 1, i = 0;
263 int strobe = gameport_time(port->gameport, ANALOG_SAITEK_TIME);
264
265 u = gameport_read(port->gameport);
266
267 if (!chf) {
268 port->buttons = (~u >> 4) & 0xf;
269 return 0;
270 }
271
272 port->buttons = 0;
273
274 while ((~u & 0xf0) && (i < 16) && t) {
275 port->buttons |= 1 << analog_chf[(~u >> 4) & 0xf];
276 if (!saitek) return 0;
277 udelay(ANALOG_SAITEK_DELAY);
278 t = strobe;
279 gameport_trigger(port->gameport);
280 while (((u = gameport_read(port->gameport)) & port->mask) && t) t--;
281 i++;
282 }
283
284 return -(!t || (i == 16));
285 }
286
287 /*
288 * analog_timer() repeatedly polls the Analog joysticks.
289 */
290
291 static void analog_timer(unsigned long data)
292 {
293 struct analog_port *port = (void *) data;
294 int i;
295
296 char saitek = !!(port->analog[0].mask & ANALOG_SAITEK);
297 char chf = !!(port->analog[0].mask & ANALOG_ANY_CHF);
298
299 if (port->cooked) {
300 port->bads -= gameport_cooked_read(port->gameport, port->axes, &port->buttons);
301 if (chf)
302 port->buttons = port->buttons ? (1 << analog_chf[port->buttons]) : 0;
303 port->reads++;
304 } else {
305 if (!port->axtime--) {
306 port->bads -= analog_cooked_read(port);
307 port->bads -= analog_button_read(port, saitek, chf);
308 port->reads++;
309 port->axtime = ANALOG_AXIS_TIME - 1;
310 } else {
311 if (!saitek)
312 analog_button_read(port, saitek, chf);
313 }
314 }
315
316 for (i = 0; i < 2; i++)
317 if (port->analog[i].mask)
318 analog_decode(port->analog + i, port->axes, port->initial, port->buttons);
319
320 mod_timer(&port->timer, jiffies + ANALOG_REFRESH_TIME);
321 }
322
323 /*
324 * analog_open() is a callback from the input open routine.
325 */
326
327 static int analog_open(struct input_dev *dev)
328 {
329 struct analog_port *port = dev->private;
330 if (!port->used++)
331 mod_timer(&port->timer, jiffies + ANALOG_REFRESH_TIME);
332 return 0;
333 }
334
335 /*
336 * analog_close() is a callback from the input close routine.
337 */
338
339 static void analog_close(struct input_dev *dev)
340 {
341 struct analog_port *port = dev->private;
342 if (!--port->used)
343 del_timer(&port->timer);
344 }
345
346 /*
347 * analog_calibrate_timer() calibrates the timer and computes loop
348 * and timeout values for a joystick port.
349 */
350
351 static void analog_calibrate_timer(struct analog_port *port)
352 {
353 struct gameport *gameport = port->gameport;
354 unsigned int i, t, tx, t1, t2, t3;
355 unsigned long flags;
356
357 save_flags(flags);
358 cli();
359 GET_TIME(t1);
360 #ifdef FAKE_TIME
361 analog_faketime += 830;
362 #endif
363 udelay(1000);
364 GET_TIME(t2);
365 GET_TIME(t3);
366 restore_flags(flags);
367
368 port->speed = DELTA(t1, t2) - DELTA(t2, t3);
369
370 tx = ~0;
371
372 for (i = 0; i < 50; i++) {
373 save_flags(flags);
374 cli();
375 GET_TIME(t1);
376 for (t = 0; t < 50; t++) { gameport_read(gameport); GET_TIME(t2); }
377 GET_TIME(t3);
378 restore_flags(flags);
379 udelay(i);
380 t = DELTA(t1, t2) - DELTA(t2, t3);
381 if (t < tx) tx = t;
382 }
383
384 port->loop = tx / 50;
385 }
386
387 /*
388 * analog_name() constructs a name for an analog joystick.
389 */
390
391 static void analog_name(struct analog *analog)
392 {
393 sprintf(analog->name, "Analog %d-axis %d-button",
394 hweight8(analog->mask & ANALOG_AXES_STD),
395 hweight8(analog->mask & ANALOG_BTNS_STD) + !!(analog->mask & ANALOG_BTNS_CHF) * 2 +
396 hweight16(analog->mask & ANALOG_BTNS_GAMEPAD) + !!(analog->mask & ANALOG_HBTN_CHF) * 4);
397
398 if (analog->mask & ANALOG_HATS_ALL)
399 sprintf(analog->name, "%s %d-hat",
400 analog->name, hweight16(analog->mask & ANALOG_HATS_ALL));
401
402 if (analog->mask & ANALOG_HAT_FCS)
403 strcat(analog->name, " FCS");
404 if (analog->mask & ANALOG_ANY_CHF)
405 strcat(analog->name, (analog->mask & ANALOG_SAITEK) ? " Saitek" : " CHF");
406
407 strcat(analog->name, (analog->mask & ANALOG_GAMEPAD) ? " gamepad": " joystick");
408 }
409
410 /*
411 * analog_init_device()
412 */
413
414 static void analog_init_device(struct analog_port *port, struct analog *analog, int index)
415 {
416 int i, j, t, v, w, x, y, z;
417
418 analog_name(analog);
419
420 analog->buttons = (analog->mask & ANALOG_GAMEPAD) ? analog_pad_btn : analog_joy_btn;
421
422 analog->dev.name = analog->name;
423 analog->dev.idbus = BUS_GAMEPORT;
424 analog->dev.idvendor = GAMEPORT_ID_VENDOR_ANALOG;
425 analog->dev.idproduct = analog->mask >> 4;
426 analog->dev.idversion = 0x0100;
427
428 analog->dev.open = analog_open;
429 analog->dev.close = analog_close;
430 analog->dev.private = port;
431 analog->dev.evbit[0] = BIT(EV_KEY) | BIT(EV_ABS);
432
433 for (i = j = 0; i < 4; i++)
434 if (analog->mask & (1 << i)) {
435
436 t = analog_axes[j];
437 x = port->axes[i];
438 y = (port->axes[0] + port->axes[1]) >> 1;
439 z = y - port->axes[i];
440 z = z > 0 ? z : -z;
441 v = (x >> 3);
442 w = (x >> 3);
443
444 set_bit(t, analog->dev.absbit);
445
446 if ((i == 2 || i == 3) && (j == 2 || j == 3) && (z > (y >> 3)))
447 x = y;
448
449 if (analog->mask & ANALOG_SAITEK) {
450 if (i == 2) x = port->axes[i];
451 v = x - (x >> 2);
452 w = (x >> 4);
453 }
454
455 analog->dev.absmax[t] = (x << 1) - v;
456 analog->dev.absmin[t] = v;
457 analog->dev.absfuzz[t] = port->fuzz;
458 analog->dev.absflat[t] = w;
459
460 j++;
461 }
462
463 for (i = j = 0; i < 3; i++)
464 if (analog->mask & analog_exts[i])
465 for (x = 0; x < 2; x++) {
466 t = analog_hats[j++];
467 set_bit(t, analog->dev.absbit);
468 analog->dev.absmax[t] = 1;
469 analog->dev.absmin[t] = -1;
470 }
471
472 for (i = j = 0; i < 4; i++)
473 if (analog->mask & (0x10 << i))
474 set_bit(analog->buttons[j++], analog->dev.keybit);
475
476 if (analog->mask & ANALOG_BTNS_CHF)
477 for (i = 0; i < 2; i++)
478 set_bit(analog->buttons[j++], analog->dev.keybit);
479
480 if (analog->mask & ANALOG_HBTN_CHF)
481 for (i = 0; i < 4; i++)
482 set_bit(analog->buttons[j++], analog->dev.keybit);
483
484 for (i = 0; i < 4; i++)
485 if (analog->mask & (ANALOG_BTN_TL << i))
486 set_bit(analog_pads[i], analog->dev.keybit);
487
488 analog_decode(analog, port->axes, port->initial, port->buttons);
489
490 input_register_device(&analog->dev);
491
492 printk(KERN_INFO "input%d: %s at gameport%d.%d",
493 analog->dev.number, analog->name, port->gameport->number, index);
494
495 if (port->cooked)
496 printk(" [ADC port]\n");
497 else
498 printk(" ["TIME_NAME" timer, %d %sHz clock, %d ns res]\n",
499 port->speed > 10000 ? (port->speed + 800) / 1000 : port->speed,
500 port->speed > 10000 ? "M" : "k", (port->loop * 1000000) / port->speed);
501 }
502
503 /*
504 * analog_init_devices() sets up device-specific values and registers the input devices.
505 */
506
507 static int analog_init_masks(struct analog_port *port)
508 {
509 int i;
510 struct analog *analog = port->analog;
511 int max[4];
512
513 if (!port->mask)
514 return -1;
515
516 if ((port->mask & 3) != 3 && port->mask != 0xc) {
517 printk(KERN_WARNING "analog.c: Unknown joystick device found "
518 "(data=%#x, gameport%d), probably not analog joystick.\n",
519 port->mask, port->gameport->number);
520 return -1;
521 }
522
523 i = port->gameport->number < ANALOG_PORTS ? analog_options[port->gameport->number] : 0xff;
524
525 analog[0].mask = i & 0xfffff;
526
527 analog[0].mask &= ~(ANALOG_AXES_STD | ANALOG_HAT_FCS | ANALOG_BTNS_GAMEPAD)
528 | port->mask | ((port->mask << 8) & ANALOG_HAT_FCS)
529 | ((port->mask << 10) & ANALOG_BTNS_TLR) | ((port->mask << 12) & ANALOG_BTNS_TLR2);
530
531 analog[0].mask &= ~(ANALOG_HAT2_CHF)
532 | ((analog[0].mask & ANALOG_HBTN_CHF) ? 0 : ANALOG_HAT2_CHF);
533
534 analog[0].mask &= ~(ANALOG_THROTTLE | ANALOG_BTN_TR | ANALOG_BTN_TR2)
535 | ((~analog[0].mask & ANALOG_HAT_FCS) >> 8)
536 | ((~analog[0].mask & ANALOG_HAT_FCS) << 2)
537 | ((~analog[0].mask & ANALOG_HAT_FCS) << 4);
538
539 analog[0].mask &= ~(ANALOG_THROTTLE | ANALOG_RUDDER)
540 | (((~analog[0].mask & ANALOG_BTNS_TLR ) >> 10)
541 & ((~analog[0].mask & ANALOG_BTNS_TLR2) >> 12));
542
543 analog[1].mask = ((i >> 20) & 0xff) | ((i >> 12) & 0xf0000);
544
545 analog[1].mask &= (analog[0].mask & ANALOG_EXTENSIONS) ? ANALOG_GAMEPAD
546 : (((ANALOG_BTNS_STD | port->mask) & ~analog[0].mask) | ANALOG_GAMEPAD);
547
548 if (port->cooked) {
549
550 for (i = 0; i < 4; i++) max[i] = port->axes[i] << 1;
551
552 if ((analog[0].mask & 0x7) == 0x7) max[2] = (max[0] + max[1]) >> 1;
553 if ((analog[0].mask & 0xb) == 0xb) max[3] = (max[0] + max[1]) >> 1;
554 if ((analog[0].mask & ANALOG_BTN_TL) && !(analog[0].mask & ANALOG_BTN_TL2)) max[2] >>= 1;
555 if ((analog[0].mask & ANALOG_BTN_TR) && !(analog[0].mask & ANALOG_BTN_TR2)) max[3] >>= 1;
556 if ((analog[0].mask & ANALOG_HAT_FCS)) max[3] >>= 1;
557
558 gameport_calibrate(port->gameport, port->axes, max);
559 }
560
561 for (i = 0; i < 4; i++)
562 port->initial[i] = port->axes[i];
563
564 return -!(analog[0].mask || analog[1].mask);
565 }
566
567 static int analog_init_port(struct gameport *gameport, struct gameport_dev *dev, struct analog_port *port)
568 {
569 int i, t, u, v;
570
571 gameport->private = port;
572 port->gameport = gameport;
573 init_timer(&port->timer);
574 port->timer.data = (long) port;
575 port->timer.function = analog_timer;
576
577 if (!gameport_open(gameport, dev, GAMEPORT_MODE_RAW)) {
578
579 analog_calibrate_timer(port);
580
581 gameport_trigger(gameport);
582 t = gameport_read(gameport);
583 wait_ms(ANALOG_MAX_TIME);
584 port->mask = (gameport_read(gameport) ^ t) & t & 0xf;
585 port->fuzz = (port->speed * ANALOG_FUZZ_MAGIC) / port->loop / 1000 + ANALOG_FUZZ_BITS;
586
587 for (i = 0; i < ANALOG_INIT_RETRIES; i++) {
588 if (!analog_cooked_read(port)) break;
589 wait_ms(ANALOG_MAX_TIME);
590 }
591
592 u = v = 0;
593
594 wait_ms(ANALOG_MAX_TIME);
595 t = gameport_time(gameport, ANALOG_MAX_TIME * 1000);
596 gameport_trigger(gameport);
597 while ((gameport_read(port->gameport) & port->mask) && (u < t)) u++;
598 udelay(ANALOG_SAITEK_DELAY);
599 t = gameport_time(gameport, ANALOG_SAITEK_TIME);
600 gameport_trigger(gameport);
601 while ((gameport_read(port->gameport) & port->mask) && (v < t)) v++;
602
603 if (v < (u >> 1) && port->gameport->number < ANALOG_PORTS) {
604 analog_options[port->gameport->number] |=
605 ANALOG_SAITEK | ANALOG_BTNS_CHF | ANALOG_HBTN_CHF | ANALOG_HAT1_CHF;
606 return 0;
607 }
608
609 gameport_close(gameport);
610 }
611
612 if (!gameport_open(gameport, dev, GAMEPORT_MODE_COOKED)) {
613
614 for (i = 0; i < ANALOG_INIT_RETRIES; i++)
615 if (!gameport_cooked_read(gameport, port->axes, &port->buttons))
616 break;
617 for (i = 0; i < 4; i++)
618 if (port->axes[i] != -1) port->mask |= 1 << i;
619
620 port->fuzz = gameport->fuzz;
621 port->cooked = 1;
622 return 0;
623 }
624
625 if (!gameport_open(gameport, dev, GAMEPORT_MODE_RAW))
626 return 0;
627
628 return -1;
629 }
630
631 static void analog_connect(struct gameport *gameport, struct gameport_dev *dev)
632 {
633 struct analog_port *port;
634 int i;
635
636 if (!(port = kmalloc(sizeof(struct analog_port), GFP_KERNEL)))
637 return;
638 memset(port, 0, sizeof(struct analog_port));
639
640 if (analog_init_port(gameport, dev, port)) {
641 kfree(port);
642 return;
643 }
644
645 if (analog_init_masks(port)) {
646 gameport_close(gameport);
647 kfree(port);
648 return;
649 }
650
651 for (i = 0; i < 2; i++)
652 if (port->analog[i].mask)
653 analog_init_device(port, port->analog + i, i);
654 }
655
656 static void analog_disconnect(struct gameport *gameport)
657 {
658 int i;
659
660 struct analog_port *port = gameport->private;
661 for (i = 0; i < 2; i++)
662 if (port->analog[i].mask)
663 input_unregister_device(&port->analog[i].dev);
664 gameport_close(gameport);
665 printk(KERN_INFO "analog.c: %d out of %d reads (%d%%) on gameport%d failed\n",
666 port->bads, port->reads, port->reads ? (port->bads * 100 / port->reads) : 0,
667 port->gameport->number);
668 kfree(port);
669 }
670
671 struct analog_types {
672 char *name;
673 int value;
674 };
675
676 struct analog_types analog_types[] = {
677 { "none", 0x00000000 },
678 { "auto", 0x000000ff },
679 { "2btn", 0x0000003f },
680 { "y-joy", 0x0cc00033 },
681 { "y-pad", 0x8cc80033 },
682 { "fcs", 0x000008f7 },
683 { "chf", 0x000002ff },
684 { "fullchf", 0x000007ff },
685 { "gamepad", 0x000830f3 },
686 { "gamepad8", 0x0008f0f3 },
687 { NULL, 0 }
688 };
689
690 static void analog_parse_options(void)
691 {
692 int i, j;
693 char *end;
694
695 for (i = 0; i < ANALOG_PORTS && js[i]; i++) {
696
697 for (j = 0; analog_types[j].name; j++)
698 if (!strcmp(analog_types[j].name, js[i])) {
699 analog_options[i] = analog_types[j].value;
700 break;
701 }
702 if (analog_types[j].name) continue;
703
704 analog_options[i] = simple_strtoul(js[i], &end, 0);
705 if (end != js[i]) continue;
706
707 analog_options[i] = 0xff;
708 if (!strlen(js[i])) continue;
709
710 printk(KERN_WARNING "analog.c: Bad config for port %d - \"%s\"\n", i, js[i]);
711 }
712
713 for (; i < ANALOG_PORTS; i++)
714 analog_options[i] = 0xff;
715 }
716
717 /*
718 * The gameport device structure.
719 */
720
721 static struct gameport_dev analog_dev = {
722 connect: analog_connect,
723 disconnect: analog_disconnect,
724 };
725
726 #ifndef MODULE
727 static int __init analog_setup(char *str)
728 {
729 char *s = str;
730 int i = 0;
731
732 if (!str || !*str) return 0;
733
734 while ((str = s) && (i < ANALOG_PORTS)) {
735 if ((s = strchr(str,','))) *s++ = 0;
736 js[i++] = str;
737 }
738
739 return 1;
740 }
741 __setup("js=", analog_setup);
742 #endif
743
744 int __init analog_init(void)
745 {
746 analog_parse_options();
747 gameport_register_device(&analog_dev);
748 return 0;
749 }
750
751 void __exit analog_exit(void)
752 {
753 gameport_unregister_device(&analog_dev);
754 }
755
756 module_init(analog_init);
757 module_exit(analog_exit);
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