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1da177e4 | 1 | /* |
1da177e4 LT |
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 | ||
1da177e4 LT |
29 | #include <linux/delay.h> |
30 | #include <linux/kernel.h> | |
31 | #include <linux/module.h> | |
1da177e4 LT |
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> | |
4e57b681 | 37 | #include <linux/jiffies.h> |
1da177e4 LT |
38 | #include <asm/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]; | |
78167236 | 53 | static unsigned int js_nargs; |
1da177e4 LT |
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 | ||
1da177e4 LT |
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 { | |
17dd3f0f | 109 | struct input_dev *dev; |
1da177e4 LT |
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__ | |
306e440d IM |
138 | |
139 | #include <asm/i8253.h> | |
140 | ||
1da177e4 LT |
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) ? CLOCK_TICK_RATE / HZ : 0))) | |
143 | #define TIME_NAME (cpu_has_tsc?"TSC":"PIT") | |
144 | static unsigned int get_time_pit(void) | |
145 | { | |
1da177e4 LT |
146 | unsigned long flags; |
147 | unsigned int count; | |
148 | ||
149 | spin_lock_irqsave(&i8253_lock, flags); | |
150 | outb_p(0x00, 0x43); | |
151 | count = inb_p(0x40); | |
152 | count |= inb_p(0x40) << 8; | |
153 | 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__) | |
162 | #define GET_TIME(x) do { x = get_cycles(); } while (0) | |
163 | #define DELTA(x,y) ((y)-(x)) | |
164 | #define TIME_NAME "PCC" | |
b920de1b DH |
165 | #elif defined(CONFIG_MN10300) |
166 | #define GET_TIME(x) do { x = get_cycles(); } while (0) | |
167 | #define DELTA(x, y) ((x) - (y)) | |
168 | #define TIME_NAME "TSC" | |
1da177e4 LT |
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 | { | |
17dd3f0f | 184 | struct input_dev *dev = analog->dev; |
1da177e4 LT |
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_poll() repeatedly polls the Analog joysticks. | |
309 | */ | |
310 | ||
311 | static void analog_poll(struct gameport *gameport) | |
312 | { | |
313 | struct analog_port *port = gameport_get_drvdata(gameport); | |
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 | ||
341 | /* | |
342 | * analog_open() is a callback from the input open routine. | |
343 | */ | |
344 | ||
345 | static int analog_open(struct input_dev *dev) | |
346 | { | |
8715c1cf | 347 | struct analog_port *port = input_get_drvdata(dev); |
1da177e4 LT |
348 | |
349 | gameport_start_polling(port->gameport); | |
350 | return 0; | |
351 | } | |
352 | ||
353 | /* | |
354 | * analog_close() is a callback from the input close routine. | |
355 | */ | |
356 | ||
357 | static void analog_close(struct input_dev *dev) | |
358 | { | |
8715c1cf | 359 | struct analog_port *port = input_get_drvdata(dev); |
1da177e4 LT |
360 | |
361 | gameport_stop_polling(port->gameport); | |
362 | } | |
363 | ||
364 | /* | |
365 | * analog_calibrate_timer() calibrates the timer and computes loop | |
366 | * and timeout values for a joystick port. | |
367 | */ | |
368 | ||
369 | static void analog_calibrate_timer(struct analog_port *port) | |
370 | { | |
371 | struct gameport *gameport = port->gameport; | |
372 | unsigned int i, t, tx, t1, t2, t3; | |
373 | unsigned long flags; | |
374 | ||
375 | local_irq_save(flags); | |
376 | GET_TIME(t1); | |
377 | #ifdef FAKE_TIME | |
378 | analog_faketime += 830; | |
379 | #endif | |
380 | mdelay(1); | |
381 | GET_TIME(t2); | |
382 | GET_TIME(t3); | |
383 | local_irq_restore(flags); | |
384 | ||
385 | port->speed = DELTA(t1, t2) - DELTA(t2, t3); | |
386 | ||
387 | tx = ~0; | |
388 | ||
389 | for (i = 0; i < 50; i++) { | |
390 | local_irq_save(flags); | |
391 | GET_TIME(t1); | |
392 | for (t = 0; t < 50; t++) { gameport_read(gameport); GET_TIME(t2); } | |
393 | GET_TIME(t3); | |
394 | local_irq_restore(flags); | |
395 | udelay(i); | |
396 | t = DELTA(t1, t2) - DELTA(t2, t3); | |
397 | if (t < tx) tx = t; | |
398 | } | |
399 | ||
400 | port->loop = tx / 50; | |
401 | } | |
402 | ||
403 | /* | |
404 | * analog_name() constructs a name for an analog joystick. | |
405 | */ | |
406 | ||
407 | static void analog_name(struct analog *analog) | |
408 | { | |
10ca4c0a DT |
409 | snprintf(analog->name, sizeof(analog->name), "Analog %d-axis %d-button", |
410 | hweight8(analog->mask & ANALOG_AXES_STD), | |
411 | hweight8(analog->mask & ANALOG_BTNS_STD) + !!(analog->mask & ANALOG_BTNS_CHF) * 2 + | |
412 | hweight16(analog->mask & ANALOG_BTNS_GAMEPAD) + !!(analog->mask & ANALOG_HBTN_CHF) * 4); | |
1da177e4 LT |
413 | |
414 | if (analog->mask & ANALOG_HATS_ALL) | |
10ca4c0a DT |
415 | snprintf(analog->name, sizeof(analog->name), "%s %d-hat", |
416 | analog->name, hweight16(analog->mask & ANALOG_HATS_ALL)); | |
1da177e4 LT |
417 | |
418 | if (analog->mask & ANALOG_HAT_FCS) | |
10ca4c0a | 419 | strlcat(analog->name, " FCS", sizeof(analog->name)); |
1da177e4 | 420 | if (analog->mask & ANALOG_ANY_CHF) |
10ca4c0a DT |
421 | strlcat(analog->name, (analog->mask & ANALOG_SAITEK) ? " Saitek" : " CHF", |
422 | sizeof(analog->name)); | |
1da177e4 | 423 | |
10ca4c0a DT |
424 | strlcat(analog->name, (analog->mask & ANALOG_GAMEPAD) ? " gamepad": " joystick", |
425 | sizeof(analog->name)); | |
1da177e4 LT |
426 | } |
427 | ||
428 | /* | |
429 | * analog_init_device() | |
430 | */ | |
431 | ||
17dd3f0f | 432 | static int analog_init_device(struct analog_port *port, struct analog *analog, int index) |
1da177e4 | 433 | { |
17dd3f0f | 434 | struct input_dev *input_dev; |
1da177e4 | 435 | int i, j, t, v, w, x, y, z; |
127278ce | 436 | int error; |
1da177e4 LT |
437 | |
438 | analog_name(analog); | |
10ca4c0a DT |
439 | snprintf(analog->phys, sizeof(analog->phys), |
440 | "%s/input%d", port->gameport->phys, index); | |
1da177e4 LT |
441 | analog->buttons = (analog->mask & ANALOG_GAMEPAD) ? analog_pad_btn : analog_joy_btn; |
442 | ||
17dd3f0f DT |
443 | analog->dev = input_dev = input_allocate_device(); |
444 | if (!input_dev) | |
445 | return -ENOMEM; | |
1da177e4 | 446 | |
17dd3f0f DT |
447 | input_dev->name = analog->name; |
448 | input_dev->phys = analog->phys; | |
449 | input_dev->id.bustype = BUS_GAMEPORT; | |
450 | input_dev->id.vendor = GAMEPORT_ID_VENDOR_ANALOG; | |
451 | input_dev->id.product = analog->mask >> 4; | |
452 | input_dev->id.version = 0x0100; | |
935e658e | 453 | input_dev->dev.parent = &port->gameport->dev; |
1da177e4 | 454 | |
8715c1cf DT |
455 | input_set_drvdata(input_dev, port); |
456 | ||
17dd3f0f DT |
457 | input_dev->open = analog_open; |
458 | input_dev->close = analog_close; | |
8715c1cf | 459 | |
7b19ada2 | 460 | input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS); |
1da177e4 LT |
461 | |
462 | for (i = j = 0; i < 4; i++) | |
463 | if (analog->mask & (1 << i)) { | |
464 | ||
465 | t = analog_axes[j]; | |
466 | x = port->axes[i]; | |
467 | y = (port->axes[0] + port->axes[1]) >> 1; | |
468 | z = y - port->axes[i]; | |
469 | z = z > 0 ? z : -z; | |
470 | v = (x >> 3); | |
471 | w = (x >> 3); | |
472 | ||
1da177e4 LT |
473 | if ((i == 2 || i == 3) && (j == 2 || j == 3) && (z > (y >> 3))) |
474 | x = y; | |
475 | ||
476 | if (analog->mask & ANALOG_SAITEK) { | |
477 | if (i == 2) x = port->axes[i]; | |
478 | v = x - (x >> 2); | |
479 | w = (x >> 4); | |
480 | } | |
481 | ||
17dd3f0f | 482 | input_set_abs_params(input_dev, t, v, (x << 1) - v, port->fuzz, w); |
1da177e4 LT |
483 | j++; |
484 | } | |
485 | ||
486 | for (i = j = 0; i < 3; i++) | |
487 | if (analog->mask & analog_exts[i]) | |
488 | for (x = 0; x < 2; x++) { | |
489 | t = analog_hats[j++]; | |
17dd3f0f | 490 | input_set_abs_params(input_dev, t, -1, 1, 0, 0); |
1da177e4 LT |
491 | } |
492 | ||
493 | for (i = j = 0; i < 4; i++) | |
494 | if (analog->mask & (0x10 << i)) | |
17dd3f0f | 495 | set_bit(analog->buttons[j++], input_dev->keybit); |
1da177e4 LT |
496 | |
497 | if (analog->mask & ANALOG_BTNS_CHF) | |
498 | for (i = 0; i < 2; i++) | |
17dd3f0f | 499 | set_bit(analog->buttons[j++], input_dev->keybit); |
1da177e4 LT |
500 | |
501 | if (analog->mask & ANALOG_HBTN_CHF) | |
502 | for (i = 0; i < 4; i++) | |
17dd3f0f | 503 | set_bit(analog->buttons[j++], input_dev->keybit); |
1da177e4 LT |
504 | |
505 | for (i = 0; i < 4; i++) | |
506 | if (analog->mask & (ANALOG_BTN_TL << i)) | |
17dd3f0f | 507 | set_bit(analog_pads[i], input_dev->keybit); |
1da177e4 LT |
508 | |
509 | analog_decode(analog, port->axes, port->initial, port->buttons); | |
510 | ||
127278ce DT |
511 | error = input_register_device(analog->dev); |
512 | if (error) { | |
513 | input_free_device(analog->dev); | |
514 | return error; | |
515 | } | |
1da177e4 | 516 | |
17dd3f0f | 517 | return 0; |
1da177e4 LT |
518 | } |
519 | ||
520 | /* | |
521 | * analog_init_devices() sets up device-specific values and registers the input devices. | |
522 | */ | |
523 | ||
524 | static int analog_init_masks(struct analog_port *port) | |
525 | { | |
526 | int i; | |
527 | struct analog *analog = port->analog; | |
528 | int max[4]; | |
529 | ||
530 | if (!port->mask) | |
531 | return -1; | |
532 | ||
533 | if ((port->mask & 3) != 3 && port->mask != 0xc) { | |
534 | printk(KERN_WARNING "analog.c: Unknown joystick device found " | |
535 | "(data=%#x, %s), probably not analog joystick.\n", | |
536 | port->mask, port->gameport->phys); | |
537 | return -1; | |
538 | } | |
539 | ||
540 | ||
541 | i = analog_options[0]; /* FIXME !!! - need to specify options for different ports */ | |
542 | ||
543 | analog[0].mask = i & 0xfffff; | |
544 | ||
545 | analog[0].mask &= ~(ANALOG_AXES_STD | ANALOG_HAT_FCS | ANALOG_BTNS_GAMEPAD) | |
546 | | port->mask | ((port->mask << 8) & ANALOG_HAT_FCS) | |
547 | | ((port->mask << 10) & ANALOG_BTNS_TLR) | ((port->mask << 12) & ANALOG_BTNS_TLR2); | |
548 | ||
549 | analog[0].mask &= ~(ANALOG_HAT2_CHF) | |
550 | | ((analog[0].mask & ANALOG_HBTN_CHF) ? 0 : ANALOG_HAT2_CHF); | |
551 | ||
552 | analog[0].mask &= ~(ANALOG_THROTTLE | ANALOG_BTN_TR | ANALOG_BTN_TR2) | |
553 | | ((~analog[0].mask & ANALOG_HAT_FCS) >> 8) | |
554 | | ((~analog[0].mask & ANALOG_HAT_FCS) << 2) | |
555 | | ((~analog[0].mask & ANALOG_HAT_FCS) << 4); | |
556 | ||
557 | analog[0].mask &= ~(ANALOG_THROTTLE | ANALOG_RUDDER) | |
558 | | (((~analog[0].mask & ANALOG_BTNS_TLR ) >> 10) | |
559 | & ((~analog[0].mask & ANALOG_BTNS_TLR2) >> 12)); | |
560 | ||
561 | analog[1].mask = ((i >> 20) & 0xff) | ((i >> 12) & 0xf0000); | |
562 | ||
563 | analog[1].mask &= (analog[0].mask & ANALOG_EXTENSIONS) ? ANALOG_GAMEPAD | |
564 | : (((ANALOG_BTNS_STD | port->mask) & ~analog[0].mask) | ANALOG_GAMEPAD); | |
565 | ||
566 | if (port->cooked) { | |
567 | ||
568 | for (i = 0; i < 4; i++) max[i] = port->axes[i] << 1; | |
569 | ||
570 | if ((analog[0].mask & 0x7) == 0x7) max[2] = (max[0] + max[1]) >> 1; | |
571 | if ((analog[0].mask & 0xb) == 0xb) max[3] = (max[0] + max[1]) >> 1; | |
572 | if ((analog[0].mask & ANALOG_BTN_TL) && !(analog[0].mask & ANALOG_BTN_TL2)) max[2] >>= 1; | |
573 | if ((analog[0].mask & ANALOG_BTN_TR) && !(analog[0].mask & ANALOG_BTN_TR2)) max[3] >>= 1; | |
574 | if ((analog[0].mask & ANALOG_HAT_FCS)) max[3] >>= 1; | |
575 | ||
576 | gameport_calibrate(port->gameport, port->axes, max); | |
577 | } | |
578 | ||
579 | for (i = 0; i < 4; i++) | |
580 | port->initial[i] = port->axes[i]; | |
581 | ||
582 | return -!(analog[0].mask || analog[1].mask); | |
583 | } | |
584 | ||
585 | static int analog_init_port(struct gameport *gameport, struct gameport_driver *drv, struct analog_port *port) | |
586 | { | |
587 | int i, t, u, v; | |
588 | ||
589 | port->gameport = gameport; | |
590 | ||
591 | gameport_set_drvdata(gameport, port); | |
592 | ||
593 | if (!gameport_open(gameport, drv, GAMEPORT_MODE_RAW)) { | |
594 | ||
595 | analog_calibrate_timer(port); | |
596 | ||
597 | gameport_trigger(gameport); | |
598 | t = gameport_read(gameport); | |
599 | msleep(ANALOG_MAX_TIME); | |
600 | port->mask = (gameport_read(gameport) ^ t) & t & 0xf; | |
601 | port->fuzz = (port->speed * ANALOG_FUZZ_MAGIC) / port->loop / 1000 + ANALOG_FUZZ_BITS; | |
602 | ||
603 | for (i = 0; i < ANALOG_INIT_RETRIES; i++) { | |
604 | if (!analog_cooked_read(port)) | |
605 | break; | |
606 | msleep(ANALOG_MAX_TIME); | |
607 | } | |
608 | ||
609 | u = v = 0; | |
610 | ||
611 | msleep(ANALOG_MAX_TIME); | |
612 | t = gameport_time(gameport, ANALOG_MAX_TIME * 1000); | |
613 | gameport_trigger(gameport); | |
614 | while ((gameport_read(port->gameport) & port->mask) && (u < t)) | |
615 | u++; | |
616 | udelay(ANALOG_SAITEK_DELAY); | |
617 | t = gameport_time(gameport, ANALOG_SAITEK_TIME); | |
618 | gameport_trigger(gameport); | |
619 | while ((gameport_read(port->gameport) & port->mask) && (v < t)) | |
620 | v++; | |
621 | ||
622 | if (v < (u >> 1)) { /* FIXME - more than one port */ | |
623 | analog_options[0] |= /* FIXME - more than one port */ | |
624 | ANALOG_SAITEK | ANALOG_BTNS_CHF | ANALOG_HBTN_CHF | ANALOG_HAT1_CHF; | |
625 | return 0; | |
626 | } | |
627 | ||
628 | gameport_close(gameport); | |
629 | } | |
630 | ||
631 | if (!gameport_open(gameport, drv, GAMEPORT_MODE_COOKED)) { | |
632 | ||
633 | for (i = 0; i < ANALOG_INIT_RETRIES; i++) | |
634 | if (!gameport_cooked_read(gameport, port->axes, &port->buttons)) | |
635 | break; | |
636 | for (i = 0; i < 4; i++) | |
637 | if (port->axes[i] != -1) | |
638 | port->mask |= 1 << i; | |
639 | ||
640 | port->fuzz = gameport->fuzz; | |
641 | port->cooked = 1; | |
642 | return 0; | |
643 | } | |
644 | ||
645 | return gameport_open(gameport, drv, GAMEPORT_MODE_RAW); | |
646 | } | |
647 | ||
648 | static int analog_connect(struct gameport *gameport, struct gameport_driver *drv) | |
649 | { | |
650 | struct analog_port *port; | |
651 | int i; | |
652 | int err; | |
653 | ||
a97e148a | 654 | if (!(port = kzalloc(sizeof(struct analog_port), GFP_KERNEL))) |
1da177e4 LT |
655 | return - ENOMEM; |
656 | ||
657 | err = analog_init_port(gameport, drv, port); | |
17dd3f0f DT |
658 | if (err) |
659 | goto fail1; | |
1da177e4 LT |
660 | |
661 | err = analog_init_masks(port); | |
17dd3f0f DT |
662 | if (err) |
663 | goto fail2; | |
1da177e4 LT |
664 | |
665 | gameport_set_poll_handler(gameport, analog_poll); | |
666 | gameport_set_poll_interval(gameport, 10); | |
667 | ||
668 | for (i = 0; i < 2; i++) | |
17dd3f0f DT |
669 | if (port->analog[i].mask) { |
670 | err = analog_init_device(port, port->analog + i, i); | |
671 | if (err) | |
672 | goto fail3; | |
673 | } | |
1da177e4 LT |
674 | |
675 | return 0; | |
17dd3f0f DT |
676 | |
677 | fail3: while (--i >= 0) | |
127278ce DT |
678 | if (port->analog[i].mask) |
679 | input_unregister_device(port->analog[i].dev); | |
17dd3f0f DT |
680 | fail2: gameport_close(gameport); |
681 | fail1: gameport_set_drvdata(gameport, NULL); | |
682 | kfree(port); | |
683 | return err; | |
1da177e4 LT |
684 | } |
685 | ||
686 | static void analog_disconnect(struct gameport *gameport) | |
687 | { | |
1da177e4 | 688 | struct analog_port *port = gameport_get_drvdata(gameport); |
17dd3f0f | 689 | int i; |
1da177e4 LT |
690 | |
691 | for (i = 0; i < 2; i++) | |
692 | if (port->analog[i].mask) | |
17dd3f0f | 693 | input_unregister_device(port->analog[i].dev); |
1da177e4 LT |
694 | gameport_close(gameport); |
695 | gameport_set_drvdata(gameport, NULL); | |
696 | printk(KERN_INFO "analog.c: %d out of %d reads (%d%%) on %s failed\n", | |
697 | port->bads, port->reads, port->reads ? (port->bads * 100 / port->reads) : 0, | |
698 | port->gameport->phys); | |
699 | kfree(port); | |
700 | } | |
701 | ||
702 | struct analog_types { | |
703 | char *name; | |
704 | int value; | |
705 | }; | |
706 | ||
707 | static struct analog_types analog_types[] = { | |
708 | { "none", 0x00000000 }, | |
709 | { "auto", 0x000000ff }, | |
710 | { "2btn", 0x0000003f }, | |
711 | { "y-joy", 0x0cc00033 }, | |
712 | { "y-pad", 0x8cc80033 }, | |
713 | { "fcs", 0x000008f7 }, | |
714 | { "chf", 0x000002ff }, | |
715 | { "fullchf", 0x000007ff }, | |
716 | { "gamepad", 0x000830f3 }, | |
717 | { "gamepad8", 0x0008f0f3 }, | |
718 | { NULL, 0 } | |
719 | }; | |
720 | ||
721 | static void analog_parse_options(void) | |
722 | { | |
723 | int i, j; | |
724 | char *end; | |
725 | ||
726 | for (i = 0; i < js_nargs; i++) { | |
727 | ||
728 | for (j = 0; analog_types[j].name; j++) | |
729 | if (!strcmp(analog_types[j].name, js[i])) { | |
730 | analog_options[i] = analog_types[j].value; | |
731 | break; | |
732 | } | |
733 | if (analog_types[j].name) continue; | |
734 | ||
735 | analog_options[i] = simple_strtoul(js[i], &end, 0); | |
736 | if (end != js[i]) continue; | |
737 | ||
738 | analog_options[i] = 0xff; | |
739 | if (!strlen(js[i])) continue; | |
740 | ||
741 | printk(KERN_WARNING "analog.c: Bad config for port %d - \"%s\"\n", i, js[i]); | |
742 | } | |
743 | ||
744 | for (; i < ANALOG_PORTS; i++) | |
745 | analog_options[i] = 0xff; | |
746 | } | |
747 | ||
748 | /* | |
749 | * The gameport device structure. | |
750 | */ | |
751 | ||
752 | static struct gameport_driver analog_drv = { | |
753 | .driver = { | |
754 | .name = "analog", | |
755 | }, | |
756 | .description = DRIVER_DESC, | |
757 | .connect = analog_connect, | |
758 | .disconnect = analog_disconnect, | |
759 | }; | |
760 | ||
761 | static int __init analog_init(void) | |
762 | { | |
763 | analog_parse_options(); | |
764 | gameport_register_driver(&analog_drv); | |
765 | ||
766 | return 0; | |
767 | } | |
768 | ||
769 | static void __exit analog_exit(void) | |
770 | { | |
771 | gameport_unregister_driver(&analog_drv); | |
772 | } | |
773 | ||
774 | module_init(analog_init); | |
775 | module_exit(analog_exit); |