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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> |
08604bd9 | 38 | #include <linux/timex.h> |
76460a7b | 39 | #include <linux/timekeeping.h> |
1da177e4 LT |
40 | |
41 | #define DRIVER_DESC "Analog joystick and gamepad driver" | |
42 | ||
43 | MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>"); | |
44 | MODULE_DESCRIPTION(DRIVER_DESC); | |
45 | MODULE_LICENSE("GPL"); | |
46 | ||
76460a7b TI |
47 | static bool use_ktime = true; |
48 | module_param(use_ktime, bool, 0400); | |
49 | MODULE_PARM_DESC(use_ktime, "Use ktime for measuring I/O speed"); | |
50 | ||
1da177e4 LT |
51 | /* |
52 | * Option parsing. | |
53 | */ | |
54 | ||
55 | #define ANALOG_PORTS 16 | |
56 | ||
57 | static char *js[ANALOG_PORTS]; | |
78167236 | 58 | static unsigned int js_nargs; |
1da177e4 LT |
59 | static int analog_options[ANALOG_PORTS]; |
60 | module_param_array_named(map, js, charp, &js_nargs, 0); | |
61 | MODULE_PARM_DESC(map, "Describes analog joysticks type/capabilities"); | |
62 | ||
1da177e4 LT |
63 | /* |
64 | * Times, feature definitions. | |
65 | */ | |
66 | ||
67 | #define ANALOG_RUDDER 0x00004 | |
68 | #define ANALOG_THROTTLE 0x00008 | |
69 | #define ANALOG_AXES_STD 0x0000f | |
70 | #define ANALOG_BTNS_STD 0x000f0 | |
71 | ||
72 | #define ANALOG_BTNS_CHF 0x00100 | |
73 | #define ANALOG_HAT1_CHF 0x00200 | |
74 | #define ANALOG_HAT2_CHF 0x00400 | |
75 | #define ANALOG_HAT_FCS 0x00800 | |
76 | #define ANALOG_HATS_ALL 0x00e00 | |
77 | #define ANALOG_BTN_TL 0x01000 | |
78 | #define ANALOG_BTN_TR 0x02000 | |
79 | #define ANALOG_BTN_TL2 0x04000 | |
80 | #define ANALOG_BTN_TR2 0x08000 | |
81 | #define ANALOG_BTNS_TLR 0x03000 | |
82 | #define ANALOG_BTNS_TLR2 0x0c000 | |
83 | #define ANALOG_BTNS_GAMEPAD 0x0f000 | |
84 | ||
85 | #define ANALOG_HBTN_CHF 0x10000 | |
86 | #define ANALOG_ANY_CHF 0x10700 | |
87 | #define ANALOG_SAITEK 0x20000 | |
88 | #define ANALOG_EXTENSIONS 0x7ff00 | |
89 | #define ANALOG_GAMEPAD 0x80000 | |
90 | ||
91 | #define ANALOG_MAX_TIME 3 /* 3 ms */ | |
92 | #define ANALOG_LOOP_TIME 2000 /* 2 * loop */ | |
93 | #define ANALOG_SAITEK_DELAY 200 /* 200 us */ | |
94 | #define ANALOG_SAITEK_TIME 2000 /* 2000 us */ | |
95 | #define ANALOG_AXIS_TIME 2 /* 2 * refresh */ | |
96 | #define ANALOG_INIT_RETRIES 8 /* 8 times */ | |
97 | #define ANALOG_FUZZ_BITS 2 /* 2 bit more */ | |
98 | #define ANALOG_FUZZ_MAGIC 36 /* 36 u*ms/loop */ | |
99 | ||
100 | #define ANALOG_MAX_NAME_LENGTH 128 | |
101 | #define ANALOG_MAX_PHYS_LENGTH 32 | |
102 | ||
103 | static short analog_axes[] = { ABS_X, ABS_Y, ABS_RUDDER, ABS_THROTTLE }; | |
104 | static short analog_hats[] = { ABS_HAT0X, ABS_HAT0Y, ABS_HAT1X, ABS_HAT1Y, ABS_HAT2X, ABS_HAT2Y }; | |
105 | static short analog_pads[] = { BTN_Y, BTN_Z, BTN_TL, BTN_TR }; | |
106 | static short analog_exts[] = { ANALOG_HAT1_CHF, ANALOG_HAT2_CHF, ANALOG_HAT_FCS }; | |
107 | 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 }; | |
108 | static short analog_joy_btn[] = { BTN_TRIGGER, BTN_THUMB, BTN_TOP, BTN_TOP2, BTN_BASE, BTN_BASE2, | |
109 | BTN_BASE3, BTN_BASE4, BTN_BASE5, BTN_BASE6 }; | |
110 | ||
111 | static unsigned char analog_chf[] = { 0xf, 0x0, 0x1, 0x9, 0x2, 0x4, 0xc, 0x8, 0x3, 0x5, 0xb, 0x7, 0xd, 0xe, 0xa, 0x6 }; | |
112 | ||
113 | struct analog { | |
17dd3f0f | 114 | struct input_dev *dev; |
1da177e4 LT |
115 | int mask; |
116 | short *buttons; | |
117 | char name[ANALOG_MAX_NAME_LENGTH]; | |
118 | char phys[ANALOG_MAX_PHYS_LENGTH]; | |
119 | }; | |
120 | ||
121 | struct analog_port { | |
122 | struct gameport *gameport; | |
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 axtime; | |
136 | }; | |
137 | ||
138 | /* | |
139 | * Time macros. | |
140 | */ | |
141 | ||
142 | #ifdef __i386__ | |
306e440d | 143 | |
334955ef | 144 | #include <linux/i8253.h> |
306e440d | 145 | |
4ea1636b | 146 | #define GET_TIME(x) do { if (cpu_has_tsc) x = (unsigned int)rdtsc(); else x = get_time_pit(); } while (0) |
18b08c55 | 147 | #define DELTA(x,y) (cpu_has_tsc ? ((y) - (x)) : ((x) - (y) + ((x) < (y) ? PIT_TICK_RATE / HZ : 0))) |
1da177e4 LT |
148 | #define TIME_NAME (cpu_has_tsc?"TSC":"PIT") |
149 | static unsigned int get_time_pit(void) | |
150 | { | |
1da177e4 LT |
151 | unsigned long flags; |
152 | unsigned int count; | |
153 | ||
ced918eb | 154 | raw_spin_lock_irqsave(&i8253_lock, flags); |
1da177e4 LT |
155 | outb_p(0x00, 0x43); |
156 | count = inb_p(0x40); | |
157 | count |= inb_p(0x40) << 8; | |
ced918eb | 158 | raw_spin_unlock_irqrestore(&i8253_lock, flags); |
1da177e4 LT |
159 | |
160 | return count; | |
161 | } | |
162 | #elif defined(__x86_64__) | |
4ea1636b | 163 | #define GET_TIME(x) do { x = (unsigned int)rdtsc(); } while (0) |
1da177e4 LT |
164 | #define DELTA(x,y) ((y)-(x)) |
165 | #define TIME_NAME "TSC" | |
a6b48699 | 166 | #elif defined(__alpha__) || defined(CONFIG_MN10300) || defined(CONFIG_ARM) || defined(CONFIG_ARM64) || defined(CONFIG_TILE) |
1da177e4 LT |
167 | #define GET_TIME(x) do { x = get_cycles(); } while (0) |
168 | #define DELTA(x,y) ((y)-(x)) | |
6fdd496e | 169 | #define TIME_NAME "get_cycles" |
1da177e4 LT |
170 | #else |
171 | #define FAKE_TIME | |
172 | static unsigned long analog_faketime = 0; | |
173 | #define GET_TIME(x) do { x = analog_faketime++; } while(0) | |
174 | #define DELTA(x,y) ((y)-(x)) | |
175 | #define TIME_NAME "Unreliable" | |
176 | #warning Precise timer not defined for this architecture. | |
177 | #endif | |
178 | ||
76460a7b TI |
179 | static inline u64 get_time(void) |
180 | { | |
181 | if (use_ktime) { | |
182 | return ktime_get_ns(); | |
183 | } else { | |
184 | unsigned int x; | |
185 | GET_TIME(x); | |
186 | return x; | |
187 | } | |
188 | } | |
189 | ||
190 | static inline unsigned int delta(u64 x, u64 y) | |
191 | { | |
192 | if (use_ktime) | |
193 | return y - x; | |
194 | else | |
195 | return DELTA((unsigned int)x, (unsigned int)y); | |
196 | } | |
197 | ||
1da177e4 LT |
198 | /* |
199 | * analog_decode() decodes analog joystick data and reports input events. | |
200 | */ | |
201 | ||
202 | static void analog_decode(struct analog *analog, int *axes, int *initial, int buttons) | |
203 | { | |
17dd3f0f | 204 | struct input_dev *dev = analog->dev; |
1da177e4 LT |
205 | int i, j; |
206 | ||
207 | if (analog->mask & ANALOG_HAT_FCS) | |
208 | for (i = 0; i < 4; i++) | |
209 | if (axes[3] < ((initial[3] * ((i << 1) + 1)) >> 3)) { | |
210 | buttons |= 1 << (i + 14); | |
211 | break; | |
212 | } | |
213 | ||
214 | for (i = j = 0; i < 6; i++) | |
215 | if (analog->mask & (0x10 << i)) | |
216 | input_report_key(dev, analog->buttons[j++], (buttons >> i) & 1); | |
217 | ||
218 | if (analog->mask & ANALOG_HBTN_CHF) | |
219 | for (i = 0; i < 4; i++) | |
220 | input_report_key(dev, analog->buttons[j++], (buttons >> (i + 10)) & 1); | |
221 | ||
222 | if (analog->mask & ANALOG_BTN_TL) | |
223 | input_report_key(dev, analog_pads[0], axes[2] < (initial[2] >> 1)); | |
224 | if (analog->mask & ANALOG_BTN_TR) | |
225 | input_report_key(dev, analog_pads[1], axes[3] < (initial[3] >> 1)); | |
226 | if (analog->mask & ANALOG_BTN_TL2) | |
227 | input_report_key(dev, analog_pads[2], axes[2] > (initial[2] + (initial[2] >> 1))); | |
228 | if (analog->mask & ANALOG_BTN_TR2) | |
229 | input_report_key(dev, analog_pads[3], axes[3] > (initial[3] + (initial[3] >> 1))); | |
230 | ||
231 | for (i = j = 0; i < 4; i++) | |
232 | if (analog->mask & (1 << i)) | |
233 | input_report_abs(dev, analog_axes[j++], axes[i]); | |
234 | ||
235 | for (i = j = 0; i < 3; i++) | |
236 | if (analog->mask & analog_exts[i]) { | |
237 | input_report_abs(dev, analog_hats[j++], | |
238 | ((buttons >> ((i << 2) + 7)) & 1) - ((buttons >> ((i << 2) + 9)) & 1)); | |
239 | input_report_abs(dev, analog_hats[j++], | |
240 | ((buttons >> ((i << 2) + 8)) & 1) - ((buttons >> ((i << 2) + 6)) & 1)); | |
241 | } | |
242 | ||
243 | input_sync(dev); | |
244 | } | |
245 | ||
246 | /* | |
247 | * analog_cooked_read() reads analog joystick data. | |
248 | */ | |
249 | ||
250 | static int analog_cooked_read(struct analog_port *port) | |
251 | { | |
252 | struct gameport *gameport = port->gameport; | |
76460a7b TI |
253 | u64 time[4], start, loop, now; |
254 | unsigned int loopout, timeout; | |
1da177e4 LT |
255 | unsigned char data[4], this, last; |
256 | unsigned long flags; | |
257 | int i, j; | |
258 | ||
259 | loopout = (ANALOG_LOOP_TIME * port->loop) / 1000; | |
260 | timeout = ANALOG_MAX_TIME * port->speed; | |
261 | ||
262 | local_irq_save(flags); | |
263 | gameport_trigger(gameport); | |
76460a7b | 264 | now = get_time(); |
1da177e4 LT |
265 | local_irq_restore(flags); |
266 | ||
267 | start = now; | |
268 | this = port->mask; | |
269 | i = 0; | |
270 | ||
271 | do { | |
272 | loop = now; | |
273 | last = this; | |
274 | ||
275 | local_irq_disable(); | |
276 | this = gameport_read(gameport) & port->mask; | |
76460a7b | 277 | now = get_time(); |
1da177e4 LT |
278 | local_irq_restore(flags); |
279 | ||
76460a7b | 280 | if ((last ^ this) && (delta(loop, now) < loopout)) { |
1da177e4 LT |
281 | data[i] = last ^ this; |
282 | time[i] = now; | |
283 | i++; | |
284 | } | |
285 | ||
76460a7b | 286 | } while (this && (i < 4) && (delta(start, now) < timeout)); |
1da177e4 LT |
287 | |
288 | this <<= 4; | |
289 | ||
290 | for (--i; i >= 0; i--) { | |
291 | this |= data[i]; | |
292 | for (j = 0; j < 4; j++) | |
293 | if (data[i] & (1 << j)) | |
76460a7b | 294 | port->axes[j] = (delta(start, time[i]) << ANALOG_FUZZ_BITS) / port->loop; |
1da177e4 LT |
295 | } |
296 | ||
297 | return -(this != port->mask); | |
298 | } | |
299 | ||
300 | static int analog_button_read(struct analog_port *port, char saitek, char chf) | |
301 | { | |
302 | unsigned char u; | |
303 | int t = 1, i = 0; | |
304 | int strobe = gameport_time(port->gameport, ANALOG_SAITEK_TIME); | |
305 | ||
306 | u = gameport_read(port->gameport); | |
307 | ||
308 | if (!chf) { | |
309 | port->buttons = (~u >> 4) & 0xf; | |
310 | return 0; | |
311 | } | |
312 | ||
313 | port->buttons = 0; | |
314 | ||
315 | while ((~u & 0xf0) && (i < 16) && t) { | |
316 | port->buttons |= 1 << analog_chf[(~u >> 4) & 0xf]; | |
317 | if (!saitek) return 0; | |
318 | udelay(ANALOG_SAITEK_DELAY); | |
319 | t = strobe; | |
320 | gameport_trigger(port->gameport); | |
321 | while (((u = gameport_read(port->gameport)) & port->mask) && t) t--; | |
322 | i++; | |
323 | } | |
324 | ||
325 | return -(!t || (i == 16)); | |
326 | } | |
327 | ||
328 | /* | |
329 | * analog_poll() repeatedly polls the Analog joysticks. | |
330 | */ | |
331 | ||
332 | static void analog_poll(struct gameport *gameport) | |
333 | { | |
334 | struct analog_port *port = gameport_get_drvdata(gameport); | |
335 | int i; | |
336 | ||
337 | char saitek = !!(port->analog[0].mask & ANALOG_SAITEK); | |
338 | char chf = !!(port->analog[0].mask & ANALOG_ANY_CHF); | |
339 | ||
340 | if (port->cooked) { | |
341 | port->bads -= gameport_cooked_read(port->gameport, port->axes, &port->buttons); | |
342 | if (chf) | |
343 | port->buttons = port->buttons ? (1 << analog_chf[port->buttons]) : 0; | |
344 | port->reads++; | |
345 | } else { | |
346 | if (!port->axtime--) { | |
347 | port->bads -= analog_cooked_read(port); | |
348 | port->bads -= analog_button_read(port, saitek, chf); | |
349 | port->reads++; | |
350 | port->axtime = ANALOG_AXIS_TIME - 1; | |
351 | } else { | |
352 | if (!saitek) | |
353 | analog_button_read(port, saitek, chf); | |
354 | } | |
355 | } | |
356 | ||
357 | for (i = 0; i < 2; i++) | |
358 | if (port->analog[i].mask) | |
359 | analog_decode(port->analog + i, port->axes, port->initial, port->buttons); | |
360 | } | |
361 | ||
362 | /* | |
363 | * analog_open() is a callback from the input open routine. | |
364 | */ | |
365 | ||
366 | static int analog_open(struct input_dev *dev) | |
367 | { | |
8715c1cf | 368 | struct analog_port *port = input_get_drvdata(dev); |
1da177e4 LT |
369 | |
370 | gameport_start_polling(port->gameport); | |
371 | return 0; | |
372 | } | |
373 | ||
374 | /* | |
375 | * analog_close() is a callback from the input close routine. | |
376 | */ | |
377 | ||
378 | static void analog_close(struct input_dev *dev) | |
379 | { | |
8715c1cf | 380 | struct analog_port *port = input_get_drvdata(dev); |
1da177e4 LT |
381 | |
382 | gameport_stop_polling(port->gameport); | |
383 | } | |
384 | ||
385 | /* | |
386 | * analog_calibrate_timer() calibrates the timer and computes loop | |
387 | * and timeout values for a joystick port. | |
388 | */ | |
389 | ||
390 | static void analog_calibrate_timer(struct analog_port *port) | |
391 | { | |
392 | struct gameport *gameport = port->gameport; | |
76460a7b TI |
393 | unsigned int i, t, tx; |
394 | u64 t1, t2, t3; | |
1da177e4 LT |
395 | unsigned long flags; |
396 | ||
76460a7b TI |
397 | if (use_ktime) { |
398 | port->speed = 1000000; | |
399 | } else { | |
400 | local_irq_save(flags); | |
401 | t1 = get_time(); | |
1da177e4 | 402 | #ifdef FAKE_TIME |
76460a7b | 403 | analog_faketime += 830; |
1da177e4 | 404 | #endif |
76460a7b TI |
405 | mdelay(1); |
406 | t2 = get_time(); | |
407 | t3 = get_time(); | |
408 | local_irq_restore(flags); | |
1da177e4 | 409 | |
76460a7b TI |
410 | port->speed = delta(t1, t2) - delta(t2, t3); |
411 | } | |
1da177e4 LT |
412 | |
413 | tx = ~0; | |
414 | ||
415 | for (i = 0; i < 50; i++) { | |
416 | local_irq_save(flags); | |
76460a7b TI |
417 | t1 = get_time(); |
418 | for (t = 0; t < 50; t++) { | |
419 | gameport_read(gameport); | |
420 | t2 = get_time(); | |
421 | } | |
422 | t3 = get_time(); | |
1da177e4 LT |
423 | local_irq_restore(flags); |
424 | udelay(i); | |
76460a7b | 425 | t = delta(t1, t2) - delta(t2, t3); |
1da177e4 LT |
426 | if (t < tx) tx = t; |
427 | } | |
428 | ||
429 | port->loop = tx / 50; | |
430 | } | |
431 | ||
432 | /* | |
433 | * analog_name() constructs a name for an analog joystick. | |
434 | */ | |
435 | ||
436 | static void analog_name(struct analog *analog) | |
437 | { | |
10ca4c0a DT |
438 | snprintf(analog->name, sizeof(analog->name), "Analog %d-axis %d-button", |
439 | hweight8(analog->mask & ANALOG_AXES_STD), | |
440 | hweight8(analog->mask & ANALOG_BTNS_STD) + !!(analog->mask & ANALOG_BTNS_CHF) * 2 + | |
441 | hweight16(analog->mask & ANALOG_BTNS_GAMEPAD) + !!(analog->mask & ANALOG_HBTN_CHF) * 4); | |
1da177e4 LT |
442 | |
443 | if (analog->mask & ANALOG_HATS_ALL) | |
10ca4c0a DT |
444 | snprintf(analog->name, sizeof(analog->name), "%s %d-hat", |
445 | analog->name, hweight16(analog->mask & ANALOG_HATS_ALL)); | |
1da177e4 LT |
446 | |
447 | if (analog->mask & ANALOG_HAT_FCS) | |
10ca4c0a | 448 | strlcat(analog->name, " FCS", sizeof(analog->name)); |
1da177e4 | 449 | if (analog->mask & ANALOG_ANY_CHF) |
10ca4c0a DT |
450 | strlcat(analog->name, (analog->mask & ANALOG_SAITEK) ? " Saitek" : " CHF", |
451 | sizeof(analog->name)); | |
1da177e4 | 452 | |
10ca4c0a DT |
453 | strlcat(analog->name, (analog->mask & ANALOG_GAMEPAD) ? " gamepad": " joystick", |
454 | sizeof(analog->name)); | |
1da177e4 LT |
455 | } |
456 | ||
457 | /* | |
458 | * analog_init_device() | |
459 | */ | |
460 | ||
17dd3f0f | 461 | static int analog_init_device(struct analog_port *port, struct analog *analog, int index) |
1da177e4 | 462 | { |
17dd3f0f | 463 | struct input_dev *input_dev; |
1da177e4 | 464 | int i, j, t, v, w, x, y, z; |
127278ce | 465 | int error; |
1da177e4 LT |
466 | |
467 | analog_name(analog); | |
10ca4c0a DT |
468 | snprintf(analog->phys, sizeof(analog->phys), |
469 | "%s/input%d", port->gameport->phys, index); | |
1da177e4 LT |
470 | analog->buttons = (analog->mask & ANALOG_GAMEPAD) ? analog_pad_btn : analog_joy_btn; |
471 | ||
17dd3f0f DT |
472 | analog->dev = input_dev = input_allocate_device(); |
473 | if (!input_dev) | |
474 | return -ENOMEM; | |
1da177e4 | 475 | |
17dd3f0f DT |
476 | input_dev->name = analog->name; |
477 | input_dev->phys = analog->phys; | |
478 | input_dev->id.bustype = BUS_GAMEPORT; | |
479 | input_dev->id.vendor = GAMEPORT_ID_VENDOR_ANALOG; | |
480 | input_dev->id.product = analog->mask >> 4; | |
481 | input_dev->id.version = 0x0100; | |
935e658e | 482 | input_dev->dev.parent = &port->gameport->dev; |
1da177e4 | 483 | |
8715c1cf DT |
484 | input_set_drvdata(input_dev, port); |
485 | ||
17dd3f0f DT |
486 | input_dev->open = analog_open; |
487 | input_dev->close = analog_close; | |
8715c1cf | 488 | |
7b19ada2 | 489 | input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS); |
1da177e4 LT |
490 | |
491 | for (i = j = 0; i < 4; i++) | |
492 | if (analog->mask & (1 << i)) { | |
493 | ||
494 | t = analog_axes[j]; | |
495 | x = port->axes[i]; | |
496 | y = (port->axes[0] + port->axes[1]) >> 1; | |
497 | z = y - port->axes[i]; | |
498 | z = z > 0 ? z : -z; | |
499 | v = (x >> 3); | |
500 | w = (x >> 3); | |
501 | ||
1da177e4 LT |
502 | if ((i == 2 || i == 3) && (j == 2 || j == 3) && (z > (y >> 3))) |
503 | x = y; | |
504 | ||
505 | if (analog->mask & ANALOG_SAITEK) { | |
506 | if (i == 2) x = port->axes[i]; | |
507 | v = x - (x >> 2); | |
508 | w = (x >> 4); | |
509 | } | |
510 | ||
17dd3f0f | 511 | input_set_abs_params(input_dev, t, v, (x << 1) - v, port->fuzz, w); |
1da177e4 LT |
512 | j++; |
513 | } | |
514 | ||
515 | for (i = j = 0; i < 3; i++) | |
516 | if (analog->mask & analog_exts[i]) | |
517 | for (x = 0; x < 2; x++) { | |
518 | t = analog_hats[j++]; | |
17dd3f0f | 519 | input_set_abs_params(input_dev, t, -1, 1, 0, 0); |
1da177e4 LT |
520 | } |
521 | ||
522 | for (i = j = 0; i < 4; i++) | |
523 | if (analog->mask & (0x10 << i)) | |
17dd3f0f | 524 | set_bit(analog->buttons[j++], input_dev->keybit); |
1da177e4 LT |
525 | |
526 | if (analog->mask & ANALOG_BTNS_CHF) | |
527 | for (i = 0; i < 2; i++) | |
17dd3f0f | 528 | set_bit(analog->buttons[j++], input_dev->keybit); |
1da177e4 LT |
529 | |
530 | if (analog->mask & ANALOG_HBTN_CHF) | |
531 | for (i = 0; i < 4; i++) | |
17dd3f0f | 532 | set_bit(analog->buttons[j++], input_dev->keybit); |
1da177e4 LT |
533 | |
534 | for (i = 0; i < 4; i++) | |
535 | if (analog->mask & (ANALOG_BTN_TL << i)) | |
17dd3f0f | 536 | set_bit(analog_pads[i], input_dev->keybit); |
1da177e4 LT |
537 | |
538 | analog_decode(analog, port->axes, port->initial, port->buttons); | |
539 | ||
127278ce DT |
540 | error = input_register_device(analog->dev); |
541 | if (error) { | |
542 | input_free_device(analog->dev); | |
543 | return error; | |
544 | } | |
1da177e4 | 545 | |
17dd3f0f | 546 | return 0; |
1da177e4 LT |
547 | } |
548 | ||
549 | /* | |
550 | * analog_init_devices() sets up device-specific values and registers the input devices. | |
551 | */ | |
552 | ||
553 | static int analog_init_masks(struct analog_port *port) | |
554 | { | |
555 | int i; | |
556 | struct analog *analog = port->analog; | |
557 | int max[4]; | |
558 | ||
559 | if (!port->mask) | |
560 | return -1; | |
561 | ||
562 | if ((port->mask & 3) != 3 && port->mask != 0xc) { | |
563 | printk(KERN_WARNING "analog.c: Unknown joystick device found " | |
564 | "(data=%#x, %s), probably not analog joystick.\n", | |
565 | port->mask, port->gameport->phys); | |
566 | return -1; | |
567 | } | |
568 | ||
569 | ||
570 | i = analog_options[0]; /* FIXME !!! - need to specify options for different ports */ | |
571 | ||
572 | analog[0].mask = i & 0xfffff; | |
573 | ||
574 | analog[0].mask &= ~(ANALOG_AXES_STD | ANALOG_HAT_FCS | ANALOG_BTNS_GAMEPAD) | |
575 | | port->mask | ((port->mask << 8) & ANALOG_HAT_FCS) | |
576 | | ((port->mask << 10) & ANALOG_BTNS_TLR) | ((port->mask << 12) & ANALOG_BTNS_TLR2); | |
577 | ||
578 | analog[0].mask &= ~(ANALOG_HAT2_CHF) | |
579 | | ((analog[0].mask & ANALOG_HBTN_CHF) ? 0 : ANALOG_HAT2_CHF); | |
580 | ||
581 | analog[0].mask &= ~(ANALOG_THROTTLE | ANALOG_BTN_TR | ANALOG_BTN_TR2) | |
582 | | ((~analog[0].mask & ANALOG_HAT_FCS) >> 8) | |
583 | | ((~analog[0].mask & ANALOG_HAT_FCS) << 2) | |
584 | | ((~analog[0].mask & ANALOG_HAT_FCS) << 4); | |
585 | ||
586 | analog[0].mask &= ~(ANALOG_THROTTLE | ANALOG_RUDDER) | |
587 | | (((~analog[0].mask & ANALOG_BTNS_TLR ) >> 10) | |
588 | & ((~analog[0].mask & ANALOG_BTNS_TLR2) >> 12)); | |
589 | ||
590 | analog[1].mask = ((i >> 20) & 0xff) | ((i >> 12) & 0xf0000); | |
591 | ||
592 | analog[1].mask &= (analog[0].mask & ANALOG_EXTENSIONS) ? ANALOG_GAMEPAD | |
593 | : (((ANALOG_BTNS_STD | port->mask) & ~analog[0].mask) | ANALOG_GAMEPAD); | |
594 | ||
595 | if (port->cooked) { | |
596 | ||
597 | for (i = 0; i < 4; i++) max[i] = port->axes[i] << 1; | |
598 | ||
599 | if ((analog[0].mask & 0x7) == 0x7) max[2] = (max[0] + max[1]) >> 1; | |
600 | if ((analog[0].mask & 0xb) == 0xb) max[3] = (max[0] + max[1]) >> 1; | |
601 | if ((analog[0].mask & ANALOG_BTN_TL) && !(analog[0].mask & ANALOG_BTN_TL2)) max[2] >>= 1; | |
602 | if ((analog[0].mask & ANALOG_BTN_TR) && !(analog[0].mask & ANALOG_BTN_TR2)) max[3] >>= 1; | |
603 | if ((analog[0].mask & ANALOG_HAT_FCS)) max[3] >>= 1; | |
604 | ||
605 | gameport_calibrate(port->gameport, port->axes, max); | |
606 | } | |
607 | ||
608 | for (i = 0; i < 4; i++) | |
609 | port->initial[i] = port->axes[i]; | |
610 | ||
611 | return -!(analog[0].mask || analog[1].mask); | |
612 | } | |
613 | ||
614 | static int analog_init_port(struct gameport *gameport, struct gameport_driver *drv, struct analog_port *port) | |
615 | { | |
616 | int i, t, u, v; | |
617 | ||
618 | port->gameport = gameport; | |
619 | ||
620 | gameport_set_drvdata(gameport, port); | |
621 | ||
622 | if (!gameport_open(gameport, drv, GAMEPORT_MODE_RAW)) { | |
623 | ||
624 | analog_calibrate_timer(port); | |
625 | ||
626 | gameport_trigger(gameport); | |
627 | t = gameport_read(gameport); | |
628 | msleep(ANALOG_MAX_TIME); | |
629 | port->mask = (gameport_read(gameport) ^ t) & t & 0xf; | |
630 | port->fuzz = (port->speed * ANALOG_FUZZ_MAGIC) / port->loop / 1000 + ANALOG_FUZZ_BITS; | |
631 | ||
632 | for (i = 0; i < ANALOG_INIT_RETRIES; i++) { | |
633 | if (!analog_cooked_read(port)) | |
634 | break; | |
635 | msleep(ANALOG_MAX_TIME); | |
636 | } | |
637 | ||
638 | u = v = 0; | |
639 | ||
640 | msleep(ANALOG_MAX_TIME); | |
641 | t = gameport_time(gameport, ANALOG_MAX_TIME * 1000); | |
642 | gameport_trigger(gameport); | |
643 | while ((gameport_read(port->gameport) & port->mask) && (u < t)) | |
644 | u++; | |
645 | udelay(ANALOG_SAITEK_DELAY); | |
646 | t = gameport_time(gameport, ANALOG_SAITEK_TIME); | |
647 | gameport_trigger(gameport); | |
648 | while ((gameport_read(port->gameport) & port->mask) && (v < t)) | |
649 | v++; | |
650 | ||
651 | if (v < (u >> 1)) { /* FIXME - more than one port */ | |
652 | analog_options[0] |= /* FIXME - more than one port */ | |
653 | ANALOG_SAITEK | ANALOG_BTNS_CHF | ANALOG_HBTN_CHF | ANALOG_HAT1_CHF; | |
654 | return 0; | |
655 | } | |
656 | ||
657 | gameport_close(gameport); | |
658 | } | |
659 | ||
660 | if (!gameport_open(gameport, drv, GAMEPORT_MODE_COOKED)) { | |
661 | ||
662 | for (i = 0; i < ANALOG_INIT_RETRIES; i++) | |
663 | if (!gameport_cooked_read(gameport, port->axes, &port->buttons)) | |
664 | break; | |
665 | for (i = 0; i < 4; i++) | |
666 | if (port->axes[i] != -1) | |
667 | port->mask |= 1 << i; | |
668 | ||
669 | port->fuzz = gameport->fuzz; | |
670 | port->cooked = 1; | |
671 | return 0; | |
672 | } | |
673 | ||
674 | return gameport_open(gameport, drv, GAMEPORT_MODE_RAW); | |
675 | } | |
676 | ||
677 | static int analog_connect(struct gameport *gameport, struct gameport_driver *drv) | |
678 | { | |
679 | struct analog_port *port; | |
680 | int i; | |
681 | int err; | |
682 | ||
a97e148a | 683 | if (!(port = kzalloc(sizeof(struct analog_port), GFP_KERNEL))) |
1da177e4 LT |
684 | return - ENOMEM; |
685 | ||
686 | err = analog_init_port(gameport, drv, port); | |
17dd3f0f DT |
687 | if (err) |
688 | goto fail1; | |
1da177e4 LT |
689 | |
690 | err = analog_init_masks(port); | |
17dd3f0f DT |
691 | if (err) |
692 | goto fail2; | |
1da177e4 LT |
693 | |
694 | gameport_set_poll_handler(gameport, analog_poll); | |
695 | gameport_set_poll_interval(gameport, 10); | |
696 | ||
697 | for (i = 0; i < 2; i++) | |
17dd3f0f DT |
698 | if (port->analog[i].mask) { |
699 | err = analog_init_device(port, port->analog + i, i); | |
700 | if (err) | |
701 | goto fail3; | |
702 | } | |
1da177e4 LT |
703 | |
704 | return 0; | |
17dd3f0f DT |
705 | |
706 | fail3: while (--i >= 0) | |
127278ce DT |
707 | if (port->analog[i].mask) |
708 | input_unregister_device(port->analog[i].dev); | |
17dd3f0f DT |
709 | fail2: gameport_close(gameport); |
710 | fail1: gameport_set_drvdata(gameport, NULL); | |
711 | kfree(port); | |
712 | return err; | |
1da177e4 LT |
713 | } |
714 | ||
715 | static void analog_disconnect(struct gameport *gameport) | |
716 | { | |
1da177e4 | 717 | struct analog_port *port = gameport_get_drvdata(gameport); |
17dd3f0f | 718 | int i; |
1da177e4 LT |
719 | |
720 | for (i = 0; i < 2; i++) | |
721 | if (port->analog[i].mask) | |
17dd3f0f | 722 | input_unregister_device(port->analog[i].dev); |
1da177e4 LT |
723 | gameport_close(gameport); |
724 | gameport_set_drvdata(gameport, NULL); | |
725 | printk(KERN_INFO "analog.c: %d out of %d reads (%d%%) on %s failed\n", | |
726 | port->bads, port->reads, port->reads ? (port->bads * 100 / port->reads) : 0, | |
727 | port->gameport->phys); | |
728 | kfree(port); | |
729 | } | |
730 | ||
731 | struct analog_types { | |
732 | char *name; | |
733 | int value; | |
734 | }; | |
735 | ||
736 | static struct analog_types analog_types[] = { | |
737 | { "none", 0x00000000 }, | |
738 | { "auto", 0x000000ff }, | |
739 | { "2btn", 0x0000003f }, | |
740 | { "y-joy", 0x0cc00033 }, | |
741 | { "y-pad", 0x8cc80033 }, | |
742 | { "fcs", 0x000008f7 }, | |
743 | { "chf", 0x000002ff }, | |
744 | { "fullchf", 0x000007ff }, | |
745 | { "gamepad", 0x000830f3 }, | |
746 | { "gamepad8", 0x0008f0f3 }, | |
747 | { NULL, 0 } | |
748 | }; | |
749 | ||
750 | static void analog_parse_options(void) | |
751 | { | |
752 | int i, j; | |
753 | char *end; | |
754 | ||
755 | for (i = 0; i < js_nargs; i++) { | |
756 | ||
757 | for (j = 0; analog_types[j].name; j++) | |
758 | if (!strcmp(analog_types[j].name, js[i])) { | |
759 | analog_options[i] = analog_types[j].value; | |
760 | break; | |
761 | } | |
762 | if (analog_types[j].name) continue; | |
763 | ||
764 | analog_options[i] = simple_strtoul(js[i], &end, 0); | |
765 | if (end != js[i]) continue; | |
766 | ||
767 | analog_options[i] = 0xff; | |
768 | if (!strlen(js[i])) continue; | |
769 | ||
770 | printk(KERN_WARNING "analog.c: Bad config for port %d - \"%s\"\n", i, js[i]); | |
771 | } | |
772 | ||
773 | for (; i < ANALOG_PORTS; i++) | |
774 | analog_options[i] = 0xff; | |
775 | } | |
776 | ||
777 | /* | |
778 | * The gameport device structure. | |
779 | */ | |
780 | ||
781 | static struct gameport_driver analog_drv = { | |
782 | .driver = { | |
783 | .name = "analog", | |
784 | }, | |
785 | .description = DRIVER_DESC, | |
786 | .connect = analog_connect, | |
787 | .disconnect = analog_disconnect, | |
788 | }; | |
789 | ||
790 | static int __init analog_init(void) | |
791 | { | |
792 | analog_parse_options(); | |
2547203d | 793 | return gameport_register_driver(&analog_drv); |
1da177e4 LT |
794 | } |
795 | ||
796 | static void __exit analog_exit(void) | |
797 | { | |
798 | gameport_unregister_driver(&analog_drv); | |
799 | } | |
800 | ||
801 | module_init(analog_init); | |
802 | module_exit(analog_exit); |