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1 | /* |
2 | * Copyright (c) 1996-2001 Vojtech Pavlik |
3 | */ |
4 | |
5 | /* |
6 | * Analog joystick and gamepad 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/slab.h> |
33 | #include <linux/bitops.h> |
34 | #include <linux/init.h> |
35 | #include <linux/input.h> |
36 | #include <linux/gameport.h> |
37 | #include <linux/jiffies.h> |
38 | #include <linux/timex.h> |
39 | |
40 | #define DRIVER_DESC "Analog joystick and gamepad driver" |
41 | |
42 | MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>"); |
43 | MODULE_DESCRIPTION(DRIVER_DESC); |
44 | MODULE_LICENSE("GPL"); |
45 | |
46 | /* |
47 | * Option parsing. |
48 | */ |
49 | |
50 | #define ANALOG_PORTS 16 |
51 | |
52 | static char *js[ANALOG_PORTS]; |
53 | static unsigned int js_nargs; |
54 | static int analog_options[ANALOG_PORTS]; |
55 | module_param_array_named(map, js, charp, &js_nargs, 0); |
56 | MODULE_PARM_DESC(map, "Describes analog joysticks type/capabilities"); |
57 | |
58 | /* |
59 | * Times, feature definitions. |
60 | */ |
61 | |
62 | #define ANALOG_RUDDER 0x00004 |
63 | #define ANALOG_THROTTLE 0x00008 |
64 | #define ANALOG_AXES_STD 0x0000f |
65 | #define ANALOG_BTNS_STD 0x000f0 |
66 | |
67 | #define ANALOG_BTNS_CHF 0x00100 |
68 | #define ANALOG_HAT1_CHF 0x00200 |
69 | #define ANALOG_HAT2_CHF 0x00400 |
70 | #define ANALOG_HAT_FCS 0x00800 |
71 | #define ANALOG_HATS_ALL 0x00e00 |
72 | #define ANALOG_BTN_TL 0x01000 |
73 | #define ANALOG_BTN_TR 0x02000 |
74 | #define ANALOG_BTN_TL2 0x04000 |
75 | #define ANALOG_BTN_TR2 0x08000 |
76 | #define ANALOG_BTNS_TLR 0x03000 |
77 | #define ANALOG_BTNS_TLR2 0x0c000 |
78 | #define ANALOG_BTNS_GAMEPAD 0x0f000 |
79 | |
80 | #define ANALOG_HBTN_CHF 0x10000 |
81 | #define ANALOG_ANY_CHF 0x10700 |
82 | #define ANALOG_SAITEK 0x20000 |
83 | #define ANALOG_EXTENSIONS 0x7ff00 |
84 | #define ANALOG_GAMEPAD 0x80000 |
85 | |
86 | #define ANALOG_MAX_TIME 3 /* 3 ms */ |
87 | #define ANALOG_LOOP_TIME 2000 /* 2 * loop */ |
88 | #define ANALOG_SAITEK_DELAY 200 /* 200 us */ |
89 | #define ANALOG_SAITEK_TIME 2000 /* 2000 us */ |
90 | #define ANALOG_AXIS_TIME 2 /* 2 * refresh */ |
91 | #define ANALOG_INIT_RETRIES 8 /* 8 times */ |
92 | #define ANALOG_FUZZ_BITS 2 /* 2 bit more */ |
93 | #define ANALOG_FUZZ_MAGIC 36 /* 36 u*ms/loop */ |
94 | |
95 | #define ANALOG_MAX_NAME_LENGTH 128 |
96 | #define ANALOG_MAX_PHYS_LENGTH 32 |
97 | |
98 | static short analog_axes[] = { ABS_X, ABS_Y, ABS_RUDDER, ABS_THROTTLE }; |
99 | static short analog_hats[] = { ABS_HAT0X, ABS_HAT0Y, ABS_HAT1X, ABS_HAT1Y, ABS_HAT2X, ABS_HAT2Y }; |
100 | static short analog_pads[] = { BTN_Y, BTN_Z, BTN_TL, BTN_TR }; |
101 | static short analog_exts[] = { ANALOG_HAT1_CHF, ANALOG_HAT2_CHF, ANALOG_HAT_FCS }; |
102 | 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 }; |
103 | static short analog_joy_btn[] = { BTN_TRIGGER, BTN_THUMB, BTN_TOP, BTN_TOP2, BTN_BASE, BTN_BASE2, |
104 | BTN_BASE3, BTN_BASE4, BTN_BASE5, BTN_BASE6 }; |
105 | |
106 | static unsigned char analog_chf[] = { 0xf, 0x0, 0x1, 0x9, 0x2, 0x4, 0xc, 0x8, 0x3, 0x5, 0xb, 0x7, 0xd, 0xe, 0xa, 0x6 }; |
107 | |
108 | struct analog { |
109 | struct input_dev *dev; |
110 | int mask; |
111 | short *buttons; |
112 | char name[ANALOG_MAX_NAME_LENGTH]; |
113 | char phys[ANALOG_MAX_PHYS_LENGTH]; |
114 | }; |
115 | |
116 | struct analog_port { |
117 | struct gameport *gameport; |
118 | struct analog analog[2]; |
119 | unsigned char mask; |
120 | char saitek; |
121 | char cooked; |
122 | int bads; |
123 | int reads; |
124 | int speed; |
125 | int loop; |
126 | int fuzz; |
127 | int axes[4]; |
128 | int buttons; |
129 | int initial[4]; |
130 | int axtime; |
131 | }; |
132 | |
133 | /* |
134 | * Time macros. |
135 | */ |
136 | |
137 | #ifdef __i386__ |
138 | |
139 | #include <linux/i8253.h> |
140 | |
141 | #define GET_TIME(x) do { if (cpu_has_tsc) rdtscl(x); else x = get_time_pit(); } while (0) |
142 | #define DELTA(x,y) (cpu_has_tsc ? ((y) - (x)) : ((x) - (y) + ((x) < (y) ? PIT_TICK_RATE / HZ : 0))) |
143 | #define TIME_NAME (cpu_has_tsc?"TSC":"PIT") |
144 | static unsigned int get_time_pit(void) |
145 | { |
146 | unsigned long flags; |
147 | unsigned int count; |
148 | |
149 | raw_spin_lock_irqsave(&i8253_lock, flags); |
150 | outb_p(0x00, 0x43); |
151 | count = inb_p(0x40); |
152 | count |= inb_p(0x40) << 8; |
153 | raw_spin_unlock_irqrestore(&i8253_lock, flags); |
154 | |
155 | return count; |
156 | } |
157 | #elif defined(__x86_64__) |
158 | #define GET_TIME(x) rdtscl(x) |
159 | #define DELTA(x,y) ((y)-(x)) |
160 | #define TIME_NAME "TSC" |
161 | #elif defined(__alpha__) || defined(CONFIG_MN10300) || defined(CONFIG_ARM) || defined(CONFIG_TILE) |
162 | #define GET_TIME(x) do { x = get_cycles(); } while (0) |
163 | #define DELTA(x,y) ((y)-(x)) |
164 | #define TIME_NAME "get_cycles" |
165 | #else |
166 | #define FAKE_TIME |
167 | static unsigned long analog_faketime = 0; |
168 | #define GET_TIME(x) do { x = analog_faketime++; } while(0) |
169 | #define DELTA(x,y) ((y)-(x)) |
170 | #define TIME_NAME "Unreliable" |
171 | #warning Precise timer not defined for this architecture. |
172 | #endif |
173 | |
174 | /* |
175 | * analog_decode() decodes analog joystick data and reports input events. |
176 | */ |
177 | |
178 | static void analog_decode(struct analog *analog, int *axes, int *initial, int buttons) |
179 | { |
180 | struct input_dev *dev = analog->dev; |
181 | int i, j; |
182 | |
183 | if (analog->mask & ANALOG_HAT_FCS) |
184 | for (i = 0; i < 4; i++) |
185 | if (axes[3] < ((initial[3] * ((i << 1) + 1)) >> 3)) { |
186 | buttons |= 1 << (i + 14); |
187 | break; |
188 | } |
189 | |
190 | for (i = j = 0; i < 6; i++) |
191 | if (analog->mask & (0x10 << i)) |
192 | input_report_key(dev, analog->buttons[j++], (buttons >> i) & 1); |
193 | |
194 | if (analog->mask & ANALOG_HBTN_CHF) |
195 | for (i = 0; i < 4; i++) |
196 | input_report_key(dev, analog->buttons[j++], (buttons >> (i + 10)) & 1); |
197 | |
198 | if (analog->mask & ANALOG_BTN_TL) |
199 | input_report_key(dev, analog_pads[0], axes[2] < (initial[2] >> 1)); |
200 | if (analog->mask & ANALOG_BTN_TR) |
201 | input_report_key(dev, analog_pads[1], axes[3] < (initial[3] >> 1)); |
202 | if (analog->mask & ANALOG_BTN_TL2) |
203 | input_report_key(dev, analog_pads[2], axes[2] > (initial[2] + (initial[2] >> 1))); |
204 | if (analog->mask & ANALOG_BTN_TR2) |
205 | input_report_key(dev, analog_pads[3], axes[3] > (initial[3] + (initial[3] >> 1))); |
206 | |
207 | for (i = j = 0; i < 4; i++) |
208 | if (analog->mask & (1 << i)) |
209 | input_report_abs(dev, analog_axes[j++], axes[i]); |
210 | |
211 | for (i = j = 0; i < 3; i++) |
212 | if (analog->mask & analog_exts[i]) { |
213 | input_report_abs(dev, analog_hats[j++], |
214 | ((buttons >> ((i << 2) + 7)) & 1) - ((buttons >> ((i << 2) + 9)) & 1)); |
215 | input_report_abs(dev, analog_hats[j++], |
216 | ((buttons >> ((i << 2) + 8)) & 1) - ((buttons >> ((i << 2) + 6)) & 1)); |
217 | } |
218 | |
219 | input_sync(dev); |
220 | } |
221 | |
222 | /* |
223 | * analog_cooked_read() reads analog joystick data. |
224 | */ |
225 | |
226 | static int analog_cooked_read(struct analog_port *port) |
227 | { |
228 | struct gameport *gameport = port->gameport; |
229 | unsigned int time[4], start, loop, now, loopout, timeout; |
230 | unsigned char data[4], this, last; |
231 | unsigned long flags; |
232 | int i, j; |
233 | |
234 | loopout = (ANALOG_LOOP_TIME * port->loop) / 1000; |
235 | timeout = ANALOG_MAX_TIME * port->speed; |
236 | |
237 | local_irq_save(flags); |
238 | gameport_trigger(gameport); |
239 | GET_TIME(now); |
240 | local_irq_restore(flags); |
241 | |
242 | start = now; |
243 | this = port->mask; |
244 | i = 0; |
245 | |
246 | do { |
247 | loop = now; |
248 | last = this; |
249 | |
250 | local_irq_disable(); |
251 | this = gameport_read(gameport) & port->mask; |
252 | GET_TIME(now); |
253 | local_irq_restore(flags); |
254 | |
255 | if ((last ^ this) && (DELTA(loop, now) < loopout)) { |
256 | data[i] = last ^ this; |
257 | time[i] = now; |
258 | i++; |
259 | } |
260 | |
261 | } while (this && (i < 4) && (DELTA(start, now) < timeout)); |
262 | |
263 | this <<= 4; |
264 | |
265 | for (--i; i >= 0; i--) { |
266 | this |= data[i]; |
267 | for (j = 0; j < 4; j++) |
268 | if (data[i] & (1 << j)) |
269 | port->axes[j] = (DELTA(start, time[i]) << ANALOG_FUZZ_BITS) / port->loop; |
270 | } |
271 | |
272 | return -(this != port->mask); |
273 | } |
274 | |
275 | static int analog_button_read(struct analog_port *port, char saitek, char chf) |
276 | { |
277 | unsigned char u; |
278 | int t = 1, i = 0; |
279 | int strobe = gameport_time(port->gameport, ANALOG_SAITEK_TIME); |
280 | |
281 | u = gameport_read(port->gameport); |
282 | |
283 | if (!chf) { |
284 | port->buttons = (~u >> 4) & 0xf; |
285 | return 0; |
286 | } |
287 | |
288 | port->buttons = 0; |
289 | |
290 | while ((~u & 0xf0) && (i < 16) && t) { |
291 | port->buttons |= 1 << analog_chf[(~u >> 4) & 0xf]; |
292 | if (!saitek) return 0; |
293 | udelay(ANALOG_SAITEK_DELAY); |
294 | t = strobe; |
295 | gameport_trigger(port->gameport); |
296 | while (((u = gameport_read(port->gameport)) & port->mask) && t) t--; |
297 | i++; |
298 | } |
299 | |
300 | return -(!t || (i == 16)); |
301 | } |
302 | |
303 | /* |
304 | * analog_poll() repeatedly polls the Analog joysticks. |
305 | */ |
306 | |
307 | static void analog_poll(struct gameport *gameport) |
308 | { |
309 | struct analog_port *port = gameport_get_drvdata(gameport); |
310 | int i; |
311 | |
312 | char saitek = !!(port->analog[0].mask & ANALOG_SAITEK); |
313 | char chf = !!(port->analog[0].mask & ANALOG_ANY_CHF); |
314 | |
315 | if (port->cooked) { |
316 | port->bads -= gameport_cooked_read(port->gameport, port->axes, &port->buttons); |
317 | if (chf) |
318 | port->buttons = port->buttons ? (1 << analog_chf[port->buttons]) : 0; |
319 | port->reads++; |
320 | } else { |
321 | if (!port->axtime--) { |
322 | port->bads -= analog_cooked_read(port); |
323 | port->bads -= analog_button_read(port, saitek, chf); |
324 | port->reads++; |
325 | port->axtime = ANALOG_AXIS_TIME - 1; |
326 | } else { |
327 | if (!saitek) |
328 | analog_button_read(port, saitek, chf); |
329 | } |
330 | } |
331 | |
332 | for (i = 0; i < 2; i++) |
333 | if (port->analog[i].mask) |
334 | analog_decode(port->analog + i, port->axes, port->initial, port->buttons); |
335 | } |
336 | |
337 | /* |
338 | * analog_open() is a callback from the input open routine. |
339 | */ |
340 | |
341 | static int analog_open(struct input_dev *dev) |
342 | { |
343 | struct analog_port *port = input_get_drvdata(dev); |
344 | |
345 | gameport_start_polling(port->gameport); |
346 | return 0; |
347 | } |
348 | |
349 | /* |
350 | * analog_close() is a callback from the input close routine. |
351 | */ |
352 | |
353 | static void analog_close(struct input_dev *dev) |
354 | { |
355 | struct analog_port *port = input_get_drvdata(dev); |
356 | |
357 | gameport_stop_polling(port->gameport); |
358 | } |
359 | |
360 | /* |
361 | * analog_calibrate_timer() calibrates the timer and computes loop |
362 | * and timeout values for a joystick port. |
363 | */ |
364 | |
365 | static void analog_calibrate_timer(struct analog_port *port) |
366 | { |
367 | struct gameport *gameport = port->gameport; |
368 | unsigned int i, t, tx, t1, t2, t3; |
369 | unsigned long flags; |
370 | |
371 | local_irq_save(flags); |
372 | GET_TIME(t1); |
373 | #ifdef FAKE_TIME |
374 | analog_faketime += 830; |
375 | #endif |
376 | mdelay(1); |
377 | GET_TIME(t2); |
378 | GET_TIME(t3); |
379 | local_irq_restore(flags); |
380 | |
381 | port->speed = DELTA(t1, t2) - DELTA(t2, t3); |
382 | |
383 | tx = ~0; |
384 | |
385 | for (i = 0; i < 50; i++) { |
386 | local_irq_save(flags); |
387 | GET_TIME(t1); |
388 | for (t = 0; t < 50; t++) { gameport_read(gameport); GET_TIME(t2); } |
389 | GET_TIME(t3); |
390 | local_irq_restore(flags); |
391 | udelay(i); |
392 | t = DELTA(t1, t2) - DELTA(t2, t3); |
393 | if (t < tx) tx = t; |
394 | } |
395 | |
396 | port->loop = tx / 50; |
397 | } |
398 | |
399 | /* |
400 | * analog_name() constructs a name for an analog joystick. |
401 | */ |
402 | |
403 | static void analog_name(struct analog *analog) |
404 | { |
405 | snprintf(analog->name, sizeof(analog->name), "Analog %d-axis %d-button", |
406 | hweight8(analog->mask & ANALOG_AXES_STD), |
407 | hweight8(analog->mask & ANALOG_BTNS_STD) + !!(analog->mask & ANALOG_BTNS_CHF) * 2 + |
408 | hweight16(analog->mask & ANALOG_BTNS_GAMEPAD) + !!(analog->mask & ANALOG_HBTN_CHF) * 4); |
409 | |
410 | if (analog->mask & ANALOG_HATS_ALL) |
411 | snprintf(analog->name, sizeof(analog->name), "%s %d-hat", |
412 | analog->name, hweight16(analog->mask & ANALOG_HATS_ALL)); |
413 | |
414 | if (analog->mask & ANALOG_HAT_FCS) |
415 | strlcat(analog->name, " FCS", sizeof(analog->name)); |
416 | if (analog->mask & ANALOG_ANY_CHF) |
417 | strlcat(analog->name, (analog->mask & ANALOG_SAITEK) ? " Saitek" : " CHF", |
418 | sizeof(analog->name)); |
419 | |
420 | strlcat(analog->name, (analog->mask & ANALOG_GAMEPAD) ? " gamepad": " joystick", |
421 | sizeof(analog->name)); |
422 | } |
423 | |
424 | /* |
425 | * analog_init_device() |
426 | */ |
427 | |
428 | static int analog_init_device(struct analog_port *port, struct analog *analog, int index) |
429 | { |
430 | struct input_dev *input_dev; |
431 | int i, j, t, v, w, x, y, z; |
432 | int error; |
433 | |
434 | analog_name(analog); |
435 | snprintf(analog->phys, sizeof(analog->phys), |
436 | "%s/input%d", port->gameport->phys, index); |
437 | analog->buttons = (analog->mask & ANALOG_GAMEPAD) ? analog_pad_btn : analog_joy_btn; |
438 | |
439 | analog->dev = input_dev = input_allocate_device(); |
440 | if (!input_dev) |
441 | return -ENOMEM; |
442 | |
443 | input_dev->name = analog->name; |
444 | input_dev->phys = analog->phys; |
445 | input_dev->id.bustype = BUS_GAMEPORT; |
446 | input_dev->id.vendor = GAMEPORT_ID_VENDOR_ANALOG; |
447 | input_dev->id.product = analog->mask >> 4; |
448 | input_dev->id.version = 0x0100; |
449 | input_dev->dev.parent = &port->gameport->dev; |
450 | |
451 | input_set_drvdata(input_dev, port); |
452 | |
453 | input_dev->open = analog_open; |
454 | input_dev->close = analog_close; |
455 | |
456 | input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS); |
457 | |
458 | for (i = j = 0; i < 4; i++) |
459 | if (analog->mask & (1 << i)) { |
460 | |
461 | t = analog_axes[j]; |
462 | x = port->axes[i]; |
463 | y = (port->axes[0] + port->axes[1]) >> 1; |
464 | z = y - port->axes[i]; |
465 | z = z > 0 ? z : -z; |
466 | v = (x >> 3); |
467 | w = (x >> 3); |
468 | |
469 | if ((i == 2 || i == 3) && (j == 2 || j == 3) && (z > (y >> 3))) |
470 | x = y; |
471 | |
472 | if (analog->mask & ANALOG_SAITEK) { |
473 | if (i == 2) x = port->axes[i]; |
474 | v = x - (x >> 2); |
475 | w = (x >> 4); |
476 | } |
477 | |
478 | input_set_abs_params(input_dev, t, v, (x << 1) - v, port->fuzz, w); |
479 | j++; |
480 | } |
481 | |
482 | for (i = j = 0; i < 3; i++) |
483 | if (analog->mask & analog_exts[i]) |
484 | for (x = 0; x < 2; x++) { |
485 | t = analog_hats[j++]; |
486 | input_set_abs_params(input_dev, t, -1, 1, 0, 0); |
487 | } |
488 | |
489 | for (i = j = 0; i < 4; i++) |
490 | if (analog->mask & (0x10 << i)) |
491 | set_bit(analog->buttons[j++], input_dev->keybit); |
492 | |
493 | if (analog->mask & ANALOG_BTNS_CHF) |
494 | for (i = 0; i < 2; i++) |
495 | set_bit(analog->buttons[j++], input_dev->keybit); |
496 | |
497 | if (analog->mask & ANALOG_HBTN_CHF) |
498 | for (i = 0; i < 4; i++) |
499 | set_bit(analog->buttons[j++], input_dev->keybit); |
500 | |
501 | for (i = 0; i < 4; i++) |
502 | if (analog->mask & (ANALOG_BTN_TL << i)) |
503 | set_bit(analog_pads[i], input_dev->keybit); |
504 | |
505 | analog_decode(analog, port->axes, port->initial, port->buttons); |
506 | |
507 | error = input_register_device(analog->dev); |
508 | if (error) { |
509 | input_free_device(analog->dev); |
510 | return error; |
511 | } |
512 | |
513 | return 0; |
514 | } |
515 | |
516 | /* |
517 | * analog_init_devices() sets up device-specific values and registers the input devices. |
518 | */ |
519 | |
520 | static int analog_init_masks(struct analog_port *port) |
521 | { |
522 | int i; |
523 | struct analog *analog = port->analog; |
524 | int max[4]; |
525 | |
526 | if (!port->mask) |
527 | return -1; |
528 | |
529 | if ((port->mask & 3) != 3 && port->mask != 0xc) { |
530 | printk(KERN_WARNING "analog.c: Unknown joystick device found " |
531 | "(data=%#x, %s), probably not analog joystick.\n", |
532 | port->mask, port->gameport->phys); |
533 | return -1; |
534 | } |
535 | |
536 | |
537 | i = analog_options[0]; /* FIXME !!! - need to specify options for different ports */ |
538 | |
539 | analog[0].mask = i & 0xfffff; |
540 | |
541 | analog[0].mask &= ~(ANALOG_AXES_STD | ANALOG_HAT_FCS | ANALOG_BTNS_GAMEPAD) |
542 | | port->mask | ((port->mask << 8) & ANALOG_HAT_FCS) |
543 | | ((port->mask << 10) & ANALOG_BTNS_TLR) | ((port->mask << 12) & ANALOG_BTNS_TLR2); |
544 | |
545 | analog[0].mask &= ~(ANALOG_HAT2_CHF) |
546 | | ((analog[0].mask & ANALOG_HBTN_CHF) ? 0 : ANALOG_HAT2_CHF); |
547 | |
548 | analog[0].mask &= ~(ANALOG_THROTTLE | ANALOG_BTN_TR | ANALOG_BTN_TR2) |
549 | | ((~analog[0].mask & ANALOG_HAT_FCS) >> 8) |
550 | | ((~analog[0].mask & ANALOG_HAT_FCS) << 2) |
551 | | ((~analog[0].mask & ANALOG_HAT_FCS) << 4); |
552 | |
553 | analog[0].mask &= ~(ANALOG_THROTTLE | ANALOG_RUDDER) |
554 | | (((~analog[0].mask & ANALOG_BTNS_TLR ) >> 10) |
555 | & ((~analog[0].mask & ANALOG_BTNS_TLR2) >> 12)); |
556 | |
557 | analog[1].mask = ((i >> 20) & 0xff) | ((i >> 12) & 0xf0000); |
558 | |
559 | analog[1].mask &= (analog[0].mask & ANALOG_EXTENSIONS) ? ANALOG_GAMEPAD |
560 | : (((ANALOG_BTNS_STD | port->mask) & ~analog[0].mask) | ANALOG_GAMEPAD); |
561 | |
562 | if (port->cooked) { |
563 | |
564 | for (i = 0; i < 4; i++) max[i] = port->axes[i] << 1; |
565 | |
566 | if ((analog[0].mask & 0x7) == 0x7) max[2] = (max[0] + max[1]) >> 1; |
567 | if ((analog[0].mask & 0xb) == 0xb) max[3] = (max[0] + max[1]) >> 1; |
568 | if ((analog[0].mask & ANALOG_BTN_TL) && !(analog[0].mask & ANALOG_BTN_TL2)) max[2] >>= 1; |
569 | if ((analog[0].mask & ANALOG_BTN_TR) && !(analog[0].mask & ANALOG_BTN_TR2)) max[3] >>= 1; |
570 | if ((analog[0].mask & ANALOG_HAT_FCS)) max[3] >>= 1; |
571 | |
572 | gameport_calibrate(port->gameport, port->axes, max); |
573 | } |
574 | |
575 | for (i = 0; i < 4; i++) |
576 | port->initial[i] = port->axes[i]; |
577 | |
578 | return -!(analog[0].mask || analog[1].mask); |
579 | } |
580 | |
581 | static int analog_init_port(struct gameport *gameport, struct gameport_driver *drv, struct analog_port *port) |
582 | { |
583 | int i, t, u, v; |
584 | |
585 | port->gameport = gameport; |
586 | |
587 | gameport_set_drvdata(gameport, port); |
588 | |
589 | if (!gameport_open(gameport, drv, GAMEPORT_MODE_RAW)) { |
590 | |
591 | analog_calibrate_timer(port); |
592 | |
593 | gameport_trigger(gameport); |
594 | t = gameport_read(gameport); |
595 | msleep(ANALOG_MAX_TIME); |
596 | port->mask = (gameport_read(gameport) ^ t) & t & 0xf; |
597 | port->fuzz = (port->speed * ANALOG_FUZZ_MAGIC) / port->loop / 1000 + ANALOG_FUZZ_BITS; |
598 | |
599 | for (i = 0; i < ANALOG_INIT_RETRIES; i++) { |
600 | if (!analog_cooked_read(port)) |
601 | break; |
602 | msleep(ANALOG_MAX_TIME); |
603 | } |
604 | |
605 | u = v = 0; |
606 | |
607 | msleep(ANALOG_MAX_TIME); |
608 | t = gameport_time(gameport, ANALOG_MAX_TIME * 1000); |
609 | gameport_trigger(gameport); |
610 | while ((gameport_read(port->gameport) & port->mask) && (u < t)) |
611 | u++; |
612 | udelay(ANALOG_SAITEK_DELAY); |
613 | t = gameport_time(gameport, ANALOG_SAITEK_TIME); |
614 | gameport_trigger(gameport); |
615 | while ((gameport_read(port->gameport) & port->mask) && (v < t)) |
616 | v++; |
617 | |
618 | if (v < (u >> 1)) { /* FIXME - more than one port */ |
619 | analog_options[0] |= /* FIXME - more than one port */ |
620 | ANALOG_SAITEK | ANALOG_BTNS_CHF | ANALOG_HBTN_CHF | ANALOG_HAT1_CHF; |
621 | return 0; |
622 | } |
623 | |
624 | gameport_close(gameport); |
625 | } |
626 | |
627 | if (!gameport_open(gameport, drv, GAMEPORT_MODE_COOKED)) { |
628 | |
629 | for (i = 0; i < ANALOG_INIT_RETRIES; i++) |
630 | if (!gameport_cooked_read(gameport, port->axes, &port->buttons)) |
631 | break; |
632 | for (i = 0; i < 4; i++) |
633 | if (port->axes[i] != -1) |
634 | port->mask |= 1 << i; |
635 | |
636 | port->fuzz = gameport->fuzz; |
637 | port->cooked = 1; |
638 | return 0; |
639 | } |
640 | |
641 | return gameport_open(gameport, drv, GAMEPORT_MODE_RAW); |
642 | } |
643 | |
644 | static int analog_connect(struct gameport *gameport, struct gameport_driver *drv) |
645 | { |
646 | struct analog_port *port; |
647 | int i; |
648 | int err; |
649 | |
650 | if (!(port = kzalloc(sizeof(struct analog_port), GFP_KERNEL))) |
651 | return - ENOMEM; |
652 | |
653 | err = analog_init_port(gameport, drv, port); |
654 | if (err) |
655 | goto fail1; |
656 | |
657 | err = analog_init_masks(port); |
658 | if (err) |
659 | goto fail2; |
660 | |
661 | gameport_set_poll_handler(gameport, analog_poll); |
662 | gameport_set_poll_interval(gameport, 10); |
663 | |
664 | for (i = 0; i < 2; i++) |
665 | if (port->analog[i].mask) { |
666 | err = analog_init_device(port, port->analog + i, i); |
667 | if (err) |
668 | goto fail3; |
669 | } |
670 | |
671 | return 0; |
672 | |
673 | fail3: while (--i >= 0) |
674 | if (port->analog[i].mask) |
675 | input_unregister_device(port->analog[i].dev); |
676 | fail2: gameport_close(gameport); |
677 | fail1: gameport_set_drvdata(gameport, NULL); |
678 | kfree(port); |
679 | return err; |
680 | } |
681 | |
682 | static void analog_disconnect(struct gameport *gameport) |
683 | { |
684 | struct analog_port *port = gameport_get_drvdata(gameport); |
685 | int i; |
686 | |
687 | for (i = 0; i < 2; i++) |
688 | if (port->analog[i].mask) |
689 | input_unregister_device(port->analog[i].dev); |
690 | gameport_close(gameport); |
691 | gameport_set_drvdata(gameport, NULL); |
692 | printk(KERN_INFO "analog.c: %d out of %d reads (%d%%) on %s failed\n", |
693 | port->bads, port->reads, port->reads ? (port->bads * 100 / port->reads) : 0, |
694 | port->gameport->phys); |
695 | kfree(port); |
696 | } |
697 | |
698 | struct analog_types { |
699 | char *name; |
700 | int value; |
701 | }; |
702 | |
703 | static struct analog_types analog_types[] = { |
704 | { "none", 0x00000000 }, |
705 | { "auto", 0x000000ff }, |
706 | { "2btn", 0x0000003f }, |
707 | { "y-joy", 0x0cc00033 }, |
708 | { "y-pad", 0x8cc80033 }, |
709 | { "fcs", 0x000008f7 }, |
710 | { "chf", 0x000002ff }, |
711 | { "fullchf", 0x000007ff }, |
712 | { "gamepad", 0x000830f3 }, |
713 | { "gamepad8", 0x0008f0f3 }, |
714 | { NULL, 0 } |
715 | }; |
716 | |
717 | static void analog_parse_options(void) |
718 | { |
719 | int i, j; |
720 | char *end; |
721 | |
722 | for (i = 0; i < js_nargs; i++) { |
723 | |
724 | for (j = 0; analog_types[j].name; j++) |
725 | if (!strcmp(analog_types[j].name, js[i])) { |
726 | analog_options[i] = analog_types[j].value; |
727 | break; |
728 | } |
729 | if (analog_types[j].name) continue; |
730 | |
731 | analog_options[i] = simple_strtoul(js[i], &end, 0); |
732 | if (end != js[i]) continue; |
733 | |
734 | analog_options[i] = 0xff; |
735 | if (!strlen(js[i])) continue; |
736 | |
737 | printk(KERN_WARNING "analog.c: Bad config for port %d - \"%s\"\n", i, js[i]); |
738 | } |
739 | |
740 | for (; i < ANALOG_PORTS; i++) |
741 | analog_options[i] = 0xff; |
742 | } |
743 | |
744 | /* |
745 | * The gameport device structure. |
746 | */ |
747 | |
748 | static struct gameport_driver analog_drv = { |
749 | .driver = { |
750 | .name = "analog", |
751 | }, |
752 | .description = DRIVER_DESC, |
753 | .connect = analog_connect, |
754 | .disconnect = analog_disconnect, |
755 | }; |
756 | |
757 | static int __init analog_init(void) |
758 | { |
759 | analog_parse_options(); |
760 | return gameport_register_driver(&analog_drv); |
761 | } |
762 | |
763 | static void __exit analog_exit(void) |
764 | { |
765 | gameport_unregister_driver(&analog_drv); |
766 | } |
767 | |
768 | module_init(analog_init); |
769 | module_exit(analog_exit); |
770 |
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