1 /*
2 * $Id: analog.c,v 1.68 2002/01/22 20:18:32 vojtech Exp $
3 *
4 * Copyright (c) 1996-2001 Vojtech Pavlik
5 */
6
7 /*
8 * Analog joystick and gamepad 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/config.h>
32 #include <linux/delay.h>
33 #include <linux/kernel.h>
34 #include <linux/module.h>
35 #include <linux/moduleparam.h>
36 #include <linux/slab.h>
37 #include <linux/bitops.h>
38 #include <linux/init.h>
39 #include <linux/input.h>
40 #include <linux/gameport.h>
41 #include <asm/timex.h>
42
43 MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>");
44 MODULE_DESCRIPTION("Analog joystick and gamepad driver");
45 MODULE_LICENSE("GPL");
46
47 /*
48 * Option parsing.
49 */
50
51 #define ANALOG_PORTS 16
52
53 static char *js[ANALOG_PORTS];
54 static int js_nargs;
55 static int analog_options[ANALOG_PORTS];
56 module_param_array_named(map, js, charp, &js_nargs, 0);
57 MODULE_PARM_DESC(map, "Describes analog joysticks type/capabilities");
58
59 __obsolete_setup("js=");
60
61 /*
62 * Times, feature definitions.
63 */
64
65 #define ANALOG_RUDDER 0x00004
66 #define ANALOG_THROTTLE 0x00008
67 #define ANALOG_AXES_STD 0x0000f
68 #define ANALOG_BTNS_STD 0x000f0
69
70 #define ANALOG_BTNS_CHF 0x00100
71 #define ANALOG_HAT1_CHF 0x00200
72 #define ANALOG_HAT2_CHF 0x00400
73 #define ANALOG_HAT_FCS 0x00800
74 #define ANALOG_HATS_ALL 0x00e00
75 #define ANALOG_BTN_TL 0x01000
76 #define ANALOG_BTN_TR 0x02000
77 #define ANALOG_BTN_TL2 0x04000
78 #define ANALOG_BTN_TR2 0x08000
79 #define ANALOG_BTNS_TLR 0x03000
80 #define ANALOG_BTNS_TLR2 0x0c000
81 #define ANALOG_BTNS_GAMEPAD 0x0f000
82
83 #define ANALOG_HBTN_CHF 0x10000
84 #define ANALOG_ANY_CHF 0x10700
85 #define ANALOG_SAITEK 0x20000
86 #define ANALOG_EXTENSIONS 0x7ff00
87 #define ANALOG_GAMEPAD 0x80000
88
89 #define ANALOG_MAX_TIME 3 /* 3 ms */
90 #define ANALOG_LOOP_TIME 2000 /* 2 * loop */
91 #define ANALOG_REFRESH_TIME HZ/100 /* 10 ms */
92 #define ANALOG_SAITEK_DELAY 200 /* 200 us */
93 #define ANALOG_SAITEK_TIME 2000 /* 2000 us */
94 #define ANALOG_AXIS_TIME 2 /* 2 * refresh */
95 #define ANALOG_INIT_RETRIES 8 /* 8 times */
96 #define ANALOG_FUZZ_BITS 2 /* 2 bit more */
97 #define ANALOG_FUZZ_MAGIC 36 /* 36 u*ms/loop */
98
99 #define ANALOG_MAX_NAME_LENGTH 128
100 #define ANALOG_MAX_PHYS_LENGTH 32
101
102 static short analog_axes[] = { ABS_X, ABS_Y, ABS_RUDDER, ABS_THROTTLE };
103 static short analog_hats[] = { ABS_HAT0X, ABS_HAT0Y, ABS_HAT1X, ABS_HAT1Y, ABS_HAT2X, ABS_HAT2Y };
104 static short analog_pads[] = { BTN_Y, BTN_Z, BTN_TL, BTN_TR };
105 static short analog_exts[] = { ANALOG_HAT1_CHF, ANALOG_HAT2_CHF, ANALOG_HAT_FCS };
106 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 };
107 static short analog_joy_btn[] = { BTN_TRIGGER, BTN_THUMB, BTN_TOP, BTN_TOP2, BTN_BASE, BTN_BASE2,
108 BTN_BASE3, BTN_BASE4, BTN_BASE5, BTN_BASE6 };
109
110 static unsigned char analog_chf[] = { 0xf, 0x0, 0x1, 0x9, 0x2, 0x4, 0xc, 0x8, 0x3, 0x5, 0xb, 0x7, 0xd, 0xe, 0xa, 0x6 };
111
112 struct analog {
113 struct input_dev dev;
114 int mask;
115 short *buttons;
116 char name[ANALOG_MAX_NAME_LENGTH];
117 char phys[ANALOG_MAX_PHYS_LENGTH];
118 };
119
120 struct analog_port {
121 struct gameport *gameport;
122 struct timer_list timer;
123 struct analog analog[2];
124 unsigned char mask;
125 char saitek;
126 char cooked;
127 int bads;
128 int reads;
129 int speed;
130 int loop;
131 int fuzz;
132 int axes[4];
133 int buttons;
134 int initial[4];
135 int used;
136 int axtime;
137 };
138
139 /*
140 * Time macros.
141 */
142
143 #ifdef __i386__
144 #define GET_TIME(x) do { if (cpu_has_tsc) rdtscl(x); else x = get_time_pit(); } while (0)
145 #define DELTA(x,y) (cpu_has_tsc ? ((y) - (x)) : ((x) - (y) + ((x) < (y) ? CLOCK_TICK_RATE / HZ : 0)))
146 #define TIME_NAME (cpu_has_tsc?"TSC":"PIT")
147 static unsigned int get_time_pit(void)
148 {
149 extern spinlock_t i8253_lock;
150 unsigned long flags;
151 unsigned int count;
152
153 spin_lock_irqsave(&i8253_lock, flags);
154 outb_p(0x00, 0x43);
155 count = inb_p(0x40);
156 count |= inb_p(0x40) << 8;
157 spin_unlock_irqrestore(&i8253_lock, flags);
158
159 return count;
160 }
161 #elif defined(__x86_64__)
162 #define GET_TIME(x) rdtscl(x)
163 #define DELTA(x,y) ((y)-(x))
164 #define TIME_NAME "TSC"
165 #elif defined(__alpha__)
166 #define GET_TIME(x) do { x = get_cycles(); } while (0)
167 #define DELTA(x,y) ((y)-(x))
168 #define TIME_NAME "PCC"
169 #else
170 #define FAKE_TIME
171 static unsigned long analog_faketime = 0;
172 #define GET_TIME(x) do { x = analog_faketime++; } while(0)
173 #define DELTA(x,y) ((y)-(x))
174 #define TIME_NAME "Unreliable"
175 #warning Precise timer not defined for this architecture.
176 #endif
177
178 /*
179 * analog_decode() decodes analog joystick data and reports input events.
180 */
181
182 static void analog_decode(struct analog *analog, int *axes, int *initial, int buttons)
183 {
184 struct input_dev *dev = &analog->dev;
185 int i, j;
186
187 if (analog->mask & ANALOG_HAT_FCS)
188 for (i = 0; i < 4; i++)
189 if (axes[3] < ((initial[3] * ((i << 1) + 1)) >> 3)) {
190 buttons |= 1 << (i + 14);
191 break;
192 }
193
194 for (i = j = 0; i < 6; i++)
195 if (analog->mask & (0x10 << i))
196 input_report_key(dev, analog->buttons[j++], (buttons >> i) & 1);
197
198 if (analog->mask & ANALOG_HBTN_CHF)
199 for (i = 0; i < 4; i++)
200 input_report_key(dev, analog->buttons[j++], (buttons >> (i + 10)) & 1);
201
202 if (analog->mask & ANALOG_BTN_TL)
203 input_report_key(dev, analog_pads[0], axes[2] < (initial[2] >> 1));
204 if (analog->mask & ANALOG_BTN_TR)
205 input_report_key(dev, analog_pads[1], axes[3] < (initial[3] >> 1));
206 if (analog->mask & ANALOG_BTN_TL2)
207 input_report_key(dev, analog_pads[2], axes[2] > (initial[2] + (initial[2] >> 1)));
208 if (analog->mask & ANALOG_BTN_TR2)
209 input_report_key(dev, analog_pads[3], axes[3] > (initial[3] + (initial[3] >> 1)));
210
211 for (i = j = 0; i < 4; i++)
212 if (analog->mask & (1 << i))
213 input_report_abs(dev, analog_axes[j++], axes[i]);
214
215 for (i = j = 0; i < 3; i++)
216 if (analog->mask & analog_exts[i]) {
217 input_report_abs(dev, analog_hats[j++],
218 ((buttons >> ((i << 2) + 7)) & 1) - ((buttons >> ((i << 2) + 9)) & 1));
219 input_report_abs(dev, analog_hats[j++],
220 ((buttons >> ((i << 2) + 8)) & 1) - ((buttons >> ((i << 2) + 6)) & 1));
221 }
222
223 input_sync(dev);
224 }
225
226 /*
227 * analog_cooked_read() reads analog joystick data.
228 */
229
230 static int analog_cooked_read(struct analog_port *port)
231 {
232 struct gameport *gameport = port->gameport;
233 unsigned int time[4], start, loop, now, loopout, timeout;
234 unsigned char data[4], this, last;
235 unsigned long flags;
236 int i, j;
237
238 loopout = (ANALOG_LOOP_TIME * port->loop) / 1000;
239 timeout = ANALOG_MAX_TIME * port->speed;
240
241 local_irq_save(flags);
242 gameport_trigger(gameport);
243 GET_TIME(now);
244 local_irq_restore(flags);
245
246 start = now;
247 this = port->mask;
248 i = 0;
249
250 do {
251 loop = now;
252 last = this;
253
254 local_irq_disable();
255 this = gameport_read(gameport) & port->mask;
256 GET_TIME(now);
257 local_irq_restore(flags);
258
259 if ((last ^ this) && (DELTA(loop, now) < loopout)) {
260 data[i] = last ^ this;
261 time[i] = now;
262 i++;
263 }
264
265 } while (this && (i < 4) && (DELTA(start, now) < timeout));
266
267 this <<= 4;
268
269 for (--i; i >= 0; i--) {
270 this |= data[i];
271 for (j = 0; j < 4; j++)
272 if (data[i] & (1 << j))
273 port->axes[j] = (DELTA(start, time[i]) << ANALOG_FUZZ_BITS) / port->loop;
274 }
275
276 return -(this != port->mask);
277 }
278
279 static int analog_button_read(struct analog_port *port, char saitek, char chf)
280 {
281 unsigned char u;
282 int t = 1, i = 0;
283 int strobe = gameport_time(port->gameport, ANALOG_SAITEK_TIME);
284
285 u = gameport_read(port->gameport);
286
287 if (!chf) {
288 port->buttons = (~u >> 4) & 0xf;
289 return 0;
290 }
291
292 port->buttons = 0;
293
294 while ((~u & 0xf0) && (i < 16) && t) {
295 port->buttons |= 1 << analog_chf[(~u >> 4) & 0xf];
296 if (!saitek) return 0;
297 udelay(ANALOG_SAITEK_DELAY);
298 t = strobe;
299 gameport_trigger(port->gameport);
300 while (((u = gameport_read(port->gameport)) & port->mask) && t) t--;
301 i++;
302 }
303
304 return -(!t || (i == 16));
305 }
306
307 /*
308 * analog_timer() repeatedly polls the Analog joysticks.
309 */
310
311 static void analog_timer(unsigned long data)
312 {
313 struct analog_port *port = (void *) data;
314 int i;
315
316 char saitek = !!(port->analog[0].mask & ANALOG_SAITEK);
317 char chf = !!(port->analog[0].mask & ANALOG_ANY_CHF);
318
319 if (port->cooked) {
320 port->bads -= gameport_cooked_read(port->gameport, port->axes, &port->buttons);
321 if (chf)
322 port->buttons = port->buttons ? (1 << analog_chf[port->buttons]) : 0;
323 port->reads++;
324 } else {
325 if (!port->axtime--) {
326 port->bads -= analog_cooked_read(port);
327 port->bads -= analog_button_read(port, saitek, chf);
328 port->reads++;
329 port->axtime = ANALOG_AXIS_TIME - 1;
330 } else {
331 if (!saitek)
332 analog_button_read(port, saitek, chf);
333 }
334 }
335
336 for (i = 0; i < 2; i++)
337 if (port->analog[i].mask)
338 analog_decode(port->analog + i, port->axes, port->initial, port->buttons);
339
340 mod_timer(&port->timer, jiffies + ANALOG_REFRESH_TIME);
341 }
342
343 /*
344 * analog_open() is a callback from the input open routine.
345 */
346
347 static int analog_open(struct input_dev *dev)
348 {
349 struct analog_port *port = dev->private;
350 if (!port->used++)
351 mod_timer(&port->timer, jiffies + ANALOG_REFRESH_TIME);
352 return 0;
353 }
354
355 /*
356 * analog_close() is a callback from the input close routine.
357 */
358
359 static void analog_close(struct input_dev *dev)
360 {
361 struct analog_port *port = dev->private;
362 if (!--port->used)
363 del_timer(&port->timer);
364 }
365
366 /*
367 * analog_calibrate_timer() calibrates the timer and computes loop
368 * and timeout values for a joystick port.
369 */
370
371 static void analog_calibrate_timer(struct analog_port *port)
372 {
373 struct gameport *gameport = port->gameport;
374 unsigned int i, t, tx, t1, t2, t3;
375 unsigned long flags;
376
377 local_irq_save(flags);
378 GET_TIME(t1);
379 #ifdef FAKE_TIME
380 analog_faketime += 830;
381 #endif
382 udelay(1000);
383 GET_TIME(t2);
384 GET_TIME(t3);
385 local_irq_restore(flags);
386
387 port->speed = DELTA(t1, t2) - DELTA(t2, t3);
388
389 tx = ~0;
390
391 for (i = 0; i < 50; i++) {
392 local_irq_save(flags);
393 GET_TIME(t1);
394 for (t = 0; t < 50; t++) { gameport_read(gameport); GET_TIME(t2); }
395 GET_TIME(t3);
396 local_irq_restore(flags);
397 udelay(i);
398 t = DELTA(t1, t2) - DELTA(t2, t3);
399 if (t < tx) tx = t;
400 }
401
402 port->loop = tx / 50;
403 }
404
405 /*
406 * analog_name() constructs a name for an analog joystick.
407 */
408
409 static void analog_name(struct analog *analog)
410 {
411 sprintf(analog->name, "Analog %d-axis %d-button",
412 hweight8(analog->mask & ANALOG_AXES_STD),
413 hweight8(analog->mask & ANALOG_BTNS_STD) + !!(analog->mask & ANALOG_BTNS_CHF) * 2 +
414 hweight16(analog->mask & ANALOG_BTNS_GAMEPAD) + !!(analog->mask & ANALOG_HBTN_CHF) * 4);
415
416 if (analog->mask & ANALOG_HATS_ALL)
417 sprintf(analog->name, "%s %d-hat",
418 analog->name, hweight16(analog->mask & ANALOG_HATS_ALL));
419
420 if (analog->mask & ANALOG_HAT_FCS)
421 strcat(analog->name, " FCS");
422 if (analog->mask & ANALOG_ANY_CHF)
423 strcat(analog->name, (analog->mask & ANALOG_SAITEK) ? " Saitek" : " CHF");
424
425 strcat(analog->name, (analog->mask & ANALOG_GAMEPAD) ? " gamepad": " joystick");
426 }
427
428 /*
429 * analog_init_device()
430 */
431
432 static void analog_init_device(struct analog_port *port, struct analog *analog, int index)
433 {
434 int i, j, t, v, w, x, y, z;
435
436 analog_name(analog);
437 sprintf(analog->phys, "%s/input%d", port->gameport->phys, index);
438 analog->buttons = (analog->mask & ANALOG_GAMEPAD) ? analog_pad_btn : analog_joy_btn;
439
440 init_input_dev(&analog->dev);
441
442 analog->dev.name = analog->name;
443 analog->dev.phys = analog->phys;
444 analog->dev.id.bustype = BUS_GAMEPORT;
445 analog->dev.id.vendor = GAMEPORT_ID_VENDOR_ANALOG;
446 analog->dev.id.product = analog->mask >> 4;
447 analog->dev.id.version = 0x0100;
448
449 analog->dev.open = analog_open;
450 analog->dev.close = analog_close;
451 analog->dev.private = port;
452 analog->dev.evbit[0] = BIT(EV_KEY) | BIT(EV_ABS);
453
454 for (i = j = 0; i < 4; i++)
455 if (analog->mask & (1 << i)) {
456
457 t = analog_axes[j];
458 x = port->axes[i];
459 y = (port->axes[0] + port->axes[1]) >> 1;
460 z = y - port->axes[i];
461 z = z > 0 ? z : -z;
462 v = (x >> 3);
463 w = (x >> 3);
464
465 set_bit(t, analog->dev.absbit);
466
467 if ((i == 2 || i == 3) && (j == 2 || j == 3) && (z > (y >> 3)))
468 x = y;
469
470 if (analog->mask & ANALOG_SAITEK) {
471 if (i == 2) x = port->axes[i];
472 v = x - (x >> 2);
473 w = (x >> 4);
474 }
475
476 analog->dev.absmax[t] = (x << 1) - v;
477 analog->dev.absmin[t] = v;
478 analog->dev.absfuzz[t] = port->fuzz;
479 analog->dev.absflat[t] = w;
480
481 j++;
482 }
483
484 for (i = j = 0; i < 3; i++)
485 if (analog->mask & analog_exts[i])
486 for (x = 0; x < 2; x++) {
487 t = analog_hats[j++];
488 set_bit(t, analog->dev.absbit);
489 analog->dev.absmax[t] = 1;
490 analog->dev.absmin[t] = -1;
491 }
492
493 for (i = j = 0; i < 4; i++)
494 if (analog->mask & (0x10 << i))
495 set_bit(analog->buttons[j++], analog->dev.keybit);
496
497 if (analog->mask & ANALOG_BTNS_CHF)
498 for (i = 0; i < 2; i++)
499 set_bit(analog->buttons[j++], analog->dev.keybit);
500
501 if (analog->mask & ANALOG_HBTN_CHF)
502 for (i = 0; i < 4; i++)
503 set_bit(analog->buttons[j++], analog->dev.keybit);
504
505 for (i = 0; i < 4; i++)
506 if (analog->mask & (ANALOG_BTN_TL << i))
507 set_bit(analog_pads[i], analog->dev.keybit);
508
509 analog_decode(analog, port->axes, port->initial, port->buttons);
510
511 input_register_device(&analog->dev);
512
513 printk(KERN_INFO "input: %s at %s", analog->name, port->gameport->phys);
514
515 if (port->cooked)
516 printk(" [ADC port]\n");
517 else
518 printk(" [%s timer, %d %sHz clock, %d ns res]\n", TIME_NAME,
519 port->speed > 10000 ? (port->speed + 800) / 1000 : port->speed,
520 port->speed > 10000 ? "M" : "k",
521 port->speed > 10000 ? (port->loop * 1000) / (port->speed / 1000)
522 : (port->loop * 1000000) / port->speed);
523 }
524
525 /*
526 * analog_init_devices() sets up device-specific values and registers the input devices.
527 */
528
529 static int analog_init_masks(struct analog_port *port)
530 {
531 int i;
532 struct analog *analog = port->analog;
533 int max[4];
534
535 if (!port->mask)
536 return -1;
537
538 if ((port->mask & 3) != 3 && port->mask != 0xc) {
539 printk(KERN_WARNING "analog.c: Unknown joystick device found "
540 "(data=%#x, %s), probably not analog joystick.\n",
541 port->mask, port->gameport->phys);
542 return -1;
543 }
544
545
546 i = analog_options[0]; /* FIXME !!! - need to specify options for different ports */
547
548 analog[0].mask = i & 0xfffff;
549
550 analog[0].mask &= ~(ANALOG_AXES_STD | ANALOG_HAT_FCS | ANALOG_BTNS_GAMEPAD)
551 | port->mask | ((port->mask << 8) & ANALOG_HAT_FCS)
552 | ((port->mask << 10) & ANALOG_BTNS_TLR) | ((port->mask << 12) & ANALOG_BTNS_TLR2);
553
554 analog[0].mask &= ~(ANALOG_HAT2_CHF)
555 | ((analog[0].mask & ANALOG_HBTN_CHF) ? 0 : ANALOG_HAT2_CHF);
556
557 analog[0].mask &= ~(ANALOG_THROTTLE | ANALOG_BTN_TR | ANALOG_BTN_TR2)
558 | ((~analog[0].mask & ANALOG_HAT_FCS) >> 8)
559 | ((~analog[0].mask & ANALOG_HAT_FCS) << 2)
560 | ((~analog[0].mask & ANALOG_HAT_FCS) << 4);
561
562 analog[0].mask &= ~(ANALOG_THROTTLE | ANALOG_RUDDER)
563 | (((~analog[0].mask & ANALOG_BTNS_TLR ) >> 10)
564 & ((~analog[0].mask & ANALOG_BTNS_TLR2) >> 12));
565
566 analog[1].mask = ((i >> 20) & 0xff) | ((i >> 12) & 0xf0000);
567
568 analog[1].mask &= (analog[0].mask & ANALOG_EXTENSIONS) ? ANALOG_GAMEPAD
569 : (((ANALOG_BTNS_STD | port->mask) & ~analog[0].mask) | ANALOG_GAMEPAD);
570
571 if (port->cooked) {
572
573 for (i = 0; i < 4; i++) max[i] = port->axes[i] << 1;
574
575 if ((analog[0].mask & 0x7) == 0x7) max[2] = (max[0] + max[1]) >> 1;
576 if ((analog[0].mask & 0xb) == 0xb) max[3] = (max[0] + max[1]) >> 1;
577 if ((analog[0].mask & ANALOG_BTN_TL) && !(analog[0].mask & ANALOG_BTN_TL2)) max[2] >>= 1;
578 if ((analog[0].mask & ANALOG_BTN_TR) && !(analog[0].mask & ANALOG_BTN_TR2)) max[3] >>= 1;
579 if ((analog[0].mask & ANALOG_HAT_FCS)) max[3] >>= 1;
580
581 gameport_calibrate(port->gameport, port->axes, max);
582 }
583
584 for (i = 0; i < 4; i++)
585 port->initial[i] = port->axes[i];
586
587 return -!(analog[0].mask || analog[1].mask);
588 }
589
590 static int analog_init_port(struct gameport *gameport, struct gameport_dev *dev, struct analog_port *port)
591 {
592 int i, t, u, v;
593
594 gameport->private = port;
595 port->gameport = gameport;
596 init_timer(&port->timer);
597 port->timer.data = (long) port;
598 port->timer.function = analog_timer;
599
600 if (!gameport_open(gameport, dev, GAMEPORT_MODE_RAW)) {
601
602 analog_calibrate_timer(port);
603
604 gameport_trigger(gameport);
605 t = gameport_read(gameport);
606 msleep(ANALOG_MAX_TIME);
607 port->mask = (gameport_read(gameport) ^ t) & t & 0xf;
608 port->fuzz = (port->speed * ANALOG_FUZZ_MAGIC) / port->loop / 1000 + ANALOG_FUZZ_BITS;
609
610 for (i = 0; i < ANALOG_INIT_RETRIES; i++) {
611 if (!analog_cooked_read(port)) break;
612 msleep(ANALOG_MAX_TIME);
613 }
614
615 u = v = 0;
616
617 msleep(ANALOG_MAX_TIME);
618 t = gameport_time(gameport, ANALOG_MAX_TIME * 1000);
619 gameport_trigger(gameport);
620 while ((gameport_read(port->gameport) & port->mask) && (u < t)) u++;
621 udelay(ANALOG_SAITEK_DELAY);
622 t = gameport_time(gameport, ANALOG_SAITEK_TIME);
623 gameport_trigger(gameport);
624 while ((gameport_read(port->gameport) & port->mask) && (v < t)) v++;
625
626 if (v < (u >> 1)) { /* FIXME - more than one port */
627 analog_options[0] |= /* FIXME - more than one port */
628 ANALOG_SAITEK | ANALOG_BTNS_CHF | ANALOG_HBTN_CHF | ANALOG_HAT1_CHF;
629 return 0;
630 }
631
632 gameport_close(gameport);
633 }
634
635 if (!gameport_open(gameport, dev, GAMEPORT_MODE_COOKED)) {
636
637 for (i = 0; i < ANALOG_INIT_RETRIES; i++)
638 if (!gameport_cooked_read(gameport, port->axes, &port->buttons))
639 break;
640 for (i = 0; i < 4; i++)
641 if (port->axes[i] != -1) port->mask |= 1 << i;
642
643 port->fuzz = gameport->fuzz;
644 port->cooked = 1;
645 return 0;
646 }
647
648 if (!gameport_open(gameport, dev, GAMEPORT_MODE_RAW))
649 return 0;
650
651 return -1;
652 }
653
654 static void analog_connect(struct gameport *gameport, struct gameport_dev *dev)
655 {
656 struct analog_port *port;
657 int i;
658
659 if (!(port = kmalloc(sizeof(struct analog_port), GFP_KERNEL)))
660 return;
661 memset(port, 0, sizeof(struct analog_port));
662
663 if (analog_init_port(gameport, dev, port)) {
664 kfree(port);
665 return;
666 }
667
668 if (analog_init_masks(port)) {
669 gameport_close(gameport);
670 kfree(port);
671 return;
672 }
673
674 for (i = 0; i < 2; i++)
675 if (port->analog[i].mask)
676 analog_init_device(port, port->analog + i, i);
677 }
678
679 static void analog_disconnect(struct gameport *gameport)
680 {
681 int i;
682
683 struct analog_port *port = gameport->private;
684 for (i = 0; i < 2; i++)
685 if (port->analog[i].mask)
686 input_unregister_device(&port->analog[i].dev);
687 gameport_close(gameport);
688 printk(KERN_INFO "analog.c: %d out of %d reads (%d%%) on %s failed\n",
689 port->bads, port->reads, port->reads ? (port->bads * 100 / port->reads) : 0,
690 port->gameport->phys);
691 kfree(port);
692 }
693
694 struct analog_types {
695 char *name;
696 int value;
697 };
698
699 struct analog_types analog_types[] = {
700 { "none", 0x00000000 },
701 { "auto", 0x000000ff },
702 { "2btn", 0x0000003f },
703 { "y-joy", 0x0cc00033 },
704 { "y-pad", 0x8cc80033 },
705 { "fcs", 0x000008f7 },
706 { "chf", 0x000002ff },
707 { "fullchf", 0x000007ff },
708 { "gamepad", 0x000830f3 },
709 { "gamepad8", 0x0008f0f3 },
710 { NULL, 0 }
711 };
712
713 static void analog_parse_options(void)
714 {
715 int i, j;
716 char *end;
717
718 for (i = 0; i < js_nargs; i++) {
719
720 for (j = 0; analog_types[j].name; j++)
721 if (!strcmp(analog_types[j].name, js[i])) {
722 analog_options[i] = analog_types[j].value;
723 break;
724 }
725 if (analog_types[j].name) continue;
726
727 analog_options[i] = simple_strtoul(js[i], &end, 0);
728 if (end != js[i]) continue;
729
730 analog_options[i] = 0xff;
731 if (!strlen(js[i])) continue;
732
733 printk(KERN_WARNING "analog.c: Bad config for port %d - \"%s\"\n", i, js[i]);
734 }
735
736 for (; i < ANALOG_PORTS; i++)
737 analog_options[i] = 0xff;
738 }
739
740 /*
741 * The gameport device structure.
742 */
743
744 static struct gameport_dev analog_dev = {
745 .connect = analog_connect,
746 .disconnect = analog_disconnect,
747 };
748
749 int __init analog_init(void)
750 {
751 analog_parse_options();
752 gameport_register_device(&analog_dev);
753 return 0;
754 }
755
756 void __exit analog_exit(void)
757 {
758 gameport_unregister_device(&analog_dev);
759 }
760
761 module_init(analog_init);
762 module_exit(analog_exit);
763
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