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1a59d1b8 | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
1da177e4 | 2 | /* |
1da177e4 LT |
3 | * Copyright (c) 1996-2001 Vojtech Pavlik |
4 | */ | |
5 | ||
6 | /* | |
7 | * Analog joystick and gamepad driver for Linux | |
8 | */ | |
9 | ||
10 | /* | |
1da177e4 LT |
11 | */ |
12 | ||
1da177e4 LT |
13 | #include <linux/delay.h> |
14 | #include <linux/kernel.h> | |
15 | #include <linux/module.h> | |
1da177e4 LT |
16 | #include <linux/slab.h> |
17 | #include <linux/bitops.h> | |
18 | #include <linux/init.h> | |
19 | #include <linux/input.h> | |
20 | #include <linux/gameport.h> | |
4e57b681 | 21 | #include <linux/jiffies.h> |
08604bd9 | 22 | #include <linux/timex.h> |
76460a7b | 23 | #include <linux/timekeeping.h> |
1da177e4 LT |
24 | |
25 | #define DRIVER_DESC "Analog joystick and gamepad driver" | |
26 | ||
27 | MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>"); | |
28 | MODULE_DESCRIPTION(DRIVER_DESC); | |
29 | MODULE_LICENSE("GPL"); | |
30 | ||
76460a7b TI |
31 | static bool use_ktime = true; |
32 | module_param(use_ktime, bool, 0400); | |
33 | MODULE_PARM_DESC(use_ktime, "Use ktime for measuring I/O speed"); | |
34 | ||
1da177e4 LT |
35 | /* |
36 | * Option parsing. | |
37 | */ | |
38 | ||
39 | #define ANALOG_PORTS 16 | |
40 | ||
41 | static char *js[ANALOG_PORTS]; | |
78167236 | 42 | static unsigned int js_nargs; |
1da177e4 LT |
43 | static int analog_options[ANALOG_PORTS]; |
44 | module_param_array_named(map, js, charp, &js_nargs, 0); | |
45 | MODULE_PARM_DESC(map, "Describes analog joysticks type/capabilities"); | |
46 | ||
1da177e4 LT |
47 | /* |
48 | * Times, feature definitions. | |
49 | */ | |
50 | ||
51 | #define ANALOG_RUDDER 0x00004 | |
52 | #define ANALOG_THROTTLE 0x00008 | |
53 | #define ANALOG_AXES_STD 0x0000f | |
54 | #define ANALOG_BTNS_STD 0x000f0 | |
55 | ||
56 | #define ANALOG_BTNS_CHF 0x00100 | |
57 | #define ANALOG_HAT1_CHF 0x00200 | |
58 | #define ANALOG_HAT2_CHF 0x00400 | |
59 | #define ANALOG_HAT_FCS 0x00800 | |
60 | #define ANALOG_HATS_ALL 0x00e00 | |
61 | #define ANALOG_BTN_TL 0x01000 | |
62 | #define ANALOG_BTN_TR 0x02000 | |
63 | #define ANALOG_BTN_TL2 0x04000 | |
64 | #define ANALOG_BTN_TR2 0x08000 | |
65 | #define ANALOG_BTNS_TLR 0x03000 | |
66 | #define ANALOG_BTNS_TLR2 0x0c000 | |
67 | #define ANALOG_BTNS_GAMEPAD 0x0f000 | |
68 | ||
69 | #define ANALOG_HBTN_CHF 0x10000 | |
70 | #define ANALOG_ANY_CHF 0x10700 | |
71 | #define ANALOG_SAITEK 0x20000 | |
72 | #define ANALOG_EXTENSIONS 0x7ff00 | |
73 | #define ANALOG_GAMEPAD 0x80000 | |
74 | ||
75 | #define ANALOG_MAX_TIME 3 /* 3 ms */ | |
76 | #define ANALOG_LOOP_TIME 2000 /* 2 * loop */ | |
77 | #define ANALOG_SAITEK_DELAY 200 /* 200 us */ | |
78 | #define ANALOG_SAITEK_TIME 2000 /* 2000 us */ | |
79 | #define ANALOG_AXIS_TIME 2 /* 2 * refresh */ | |
80 | #define ANALOG_INIT_RETRIES 8 /* 8 times */ | |
81 | #define ANALOG_FUZZ_BITS 2 /* 2 bit more */ | |
82 | #define ANALOG_FUZZ_MAGIC 36 /* 36 u*ms/loop */ | |
83 | ||
84 | #define ANALOG_MAX_NAME_LENGTH 128 | |
85 | #define ANALOG_MAX_PHYS_LENGTH 32 | |
86 | ||
87 | static short analog_axes[] = { ABS_X, ABS_Y, ABS_RUDDER, ABS_THROTTLE }; | |
88 | static short analog_hats[] = { ABS_HAT0X, ABS_HAT0Y, ABS_HAT1X, ABS_HAT1Y, ABS_HAT2X, ABS_HAT2Y }; | |
89 | static short analog_pads[] = { BTN_Y, BTN_Z, BTN_TL, BTN_TR }; | |
90 | static short analog_exts[] = { ANALOG_HAT1_CHF, ANALOG_HAT2_CHF, ANALOG_HAT_FCS }; | |
91 | 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 }; | |
92 | static short analog_joy_btn[] = { BTN_TRIGGER, BTN_THUMB, BTN_TOP, BTN_TOP2, BTN_BASE, BTN_BASE2, | |
93 | BTN_BASE3, BTN_BASE4, BTN_BASE5, BTN_BASE6 }; | |
94 | ||
95 | static unsigned char analog_chf[] = { 0xf, 0x0, 0x1, 0x9, 0x2, 0x4, 0xc, 0x8, 0x3, 0x5, 0xb, 0x7, 0xd, 0xe, 0xa, 0x6 }; | |
96 | ||
97 | struct analog { | |
17dd3f0f | 98 | struct input_dev *dev; |
1da177e4 LT |
99 | int mask; |
100 | short *buttons; | |
101 | char name[ANALOG_MAX_NAME_LENGTH]; | |
102 | char phys[ANALOG_MAX_PHYS_LENGTH]; | |
103 | }; | |
104 | ||
105 | struct analog_port { | |
106 | struct gameport *gameport; | |
107 | struct analog analog[2]; | |
108 | unsigned char mask; | |
109 | char saitek; | |
110 | char cooked; | |
111 | int bads; | |
112 | int reads; | |
113 | int speed; | |
114 | int loop; | |
115 | int fuzz; | |
116 | int axes[4]; | |
117 | int buttons; | |
118 | int initial[4]; | |
119 | int axtime; | |
120 | }; | |
121 | ||
122 | /* | |
123 | * Time macros. | |
124 | */ | |
125 | ||
126 | #ifdef __i386__ | |
306e440d | 127 | |
334955ef | 128 | #include <linux/i8253.h> |
306e440d | 129 | |
59e21e3d BP |
130 | #define GET_TIME(x) do { if (boot_cpu_has(X86_FEATURE_TSC)) x = (unsigned int)rdtsc(); else x = get_time_pit(); } while (0) |
131 | #define DELTA(x,y) (boot_cpu_has(X86_FEATURE_TSC) ? ((y) - (x)) : ((x) - (y) + ((x) < (y) ? PIT_TICK_RATE / HZ : 0))) | |
132 | #define TIME_NAME (boot_cpu_has(X86_FEATURE_TSC)?"TSC":"PIT") | |
1da177e4 LT |
133 | static unsigned int get_time_pit(void) |
134 | { | |
1da177e4 LT |
135 | unsigned long flags; |
136 | unsigned int count; | |
137 | ||
ced918eb | 138 | raw_spin_lock_irqsave(&i8253_lock, flags); |
1da177e4 LT |
139 | outb_p(0x00, 0x43); |
140 | count = inb_p(0x40); | |
141 | count |= inb_p(0x40) << 8; | |
ced918eb | 142 | raw_spin_unlock_irqrestore(&i8253_lock, flags); |
1da177e4 LT |
143 | |
144 | return count; | |
145 | } | |
146 | #elif defined(__x86_64__) | |
4ea1636b | 147 | #define GET_TIME(x) do { x = (unsigned int)rdtsc(); } while (0) |
1da177e4 LT |
148 | #define DELTA(x,y) ((y)-(x)) |
149 | #define TIME_NAME "TSC" | |
5414ab31 | 150 | #elif defined(__alpha__) || defined(CONFIG_ARM) || defined(CONFIG_ARM64) || defined(CONFIG_PPC) || defined(CONFIG_RISCV) |
1da177e4 LT |
151 | #define GET_TIME(x) do { x = get_cycles(); } while (0) |
152 | #define DELTA(x,y) ((y)-(x)) | |
6fdd496e | 153 | #define TIME_NAME "get_cycles" |
1da177e4 LT |
154 | #else |
155 | #define FAKE_TIME | |
156 | static unsigned long analog_faketime = 0; | |
157 | #define GET_TIME(x) do { x = analog_faketime++; } while(0) | |
158 | #define DELTA(x,y) ((y)-(x)) | |
159 | #define TIME_NAME "Unreliable" | |
160 | #warning Precise timer not defined for this architecture. | |
161 | #endif | |
162 | ||
76460a7b TI |
163 | static inline u64 get_time(void) |
164 | { | |
165 | if (use_ktime) { | |
166 | return ktime_get_ns(); | |
167 | } else { | |
168 | unsigned int x; | |
169 | GET_TIME(x); | |
170 | return x; | |
171 | } | |
172 | } | |
173 | ||
174 | static inline unsigned int delta(u64 x, u64 y) | |
175 | { | |
176 | if (use_ktime) | |
177 | return y - x; | |
178 | else | |
179 | return DELTA((unsigned int)x, (unsigned int)y); | |
180 | } | |
181 | ||
1da177e4 LT |
182 | /* |
183 | * analog_decode() decodes analog joystick data and reports input events. | |
184 | */ | |
185 | ||
186 | static void analog_decode(struct analog *analog, int *axes, int *initial, int buttons) | |
187 | { | |
17dd3f0f | 188 | struct input_dev *dev = analog->dev; |
1da177e4 LT |
189 | int i, j; |
190 | ||
191 | if (analog->mask & ANALOG_HAT_FCS) | |
192 | for (i = 0; i < 4; i++) | |
193 | if (axes[3] < ((initial[3] * ((i << 1) + 1)) >> 3)) { | |
194 | buttons |= 1 << (i + 14); | |
195 | break; | |
196 | } | |
197 | ||
198 | for (i = j = 0; i < 6; i++) | |
199 | if (analog->mask & (0x10 << i)) | |
200 | input_report_key(dev, analog->buttons[j++], (buttons >> i) & 1); | |
201 | ||
202 | if (analog->mask & ANALOG_HBTN_CHF) | |
203 | for (i = 0; i < 4; i++) | |
204 | input_report_key(dev, analog->buttons[j++], (buttons >> (i + 10)) & 1); | |
205 | ||
206 | if (analog->mask & ANALOG_BTN_TL) | |
207 | input_report_key(dev, analog_pads[0], axes[2] < (initial[2] >> 1)); | |
208 | if (analog->mask & ANALOG_BTN_TR) | |
209 | input_report_key(dev, analog_pads[1], axes[3] < (initial[3] >> 1)); | |
210 | if (analog->mask & ANALOG_BTN_TL2) | |
211 | input_report_key(dev, analog_pads[2], axes[2] > (initial[2] + (initial[2] >> 1))); | |
212 | if (analog->mask & ANALOG_BTN_TR2) | |
213 | input_report_key(dev, analog_pads[3], axes[3] > (initial[3] + (initial[3] >> 1))); | |
214 | ||
215 | for (i = j = 0; i < 4; i++) | |
216 | if (analog->mask & (1 << i)) | |
217 | input_report_abs(dev, analog_axes[j++], axes[i]); | |
218 | ||
219 | for (i = j = 0; i < 3; i++) | |
220 | if (analog->mask & analog_exts[i]) { | |
221 | input_report_abs(dev, analog_hats[j++], | |
222 | ((buttons >> ((i << 2) + 7)) & 1) - ((buttons >> ((i << 2) + 9)) & 1)); | |
223 | input_report_abs(dev, analog_hats[j++], | |
224 | ((buttons >> ((i << 2) + 8)) & 1) - ((buttons >> ((i << 2) + 6)) & 1)); | |
225 | } | |
226 | ||
227 | input_sync(dev); | |
228 | } | |
229 | ||
230 | /* | |
231 | * analog_cooked_read() reads analog joystick data. | |
232 | */ | |
233 | ||
234 | static int analog_cooked_read(struct analog_port *port) | |
235 | { | |
236 | struct gameport *gameport = port->gameport; | |
76460a7b TI |
237 | u64 time[4], start, loop, now; |
238 | unsigned int loopout, timeout; | |
1da177e4 LT |
239 | unsigned char data[4], this, last; |
240 | unsigned long flags; | |
241 | int i, j; | |
242 | ||
243 | loopout = (ANALOG_LOOP_TIME * port->loop) / 1000; | |
244 | timeout = ANALOG_MAX_TIME * port->speed; | |
245 | ||
246 | local_irq_save(flags); | |
247 | gameport_trigger(gameport); | |
76460a7b | 248 | now = get_time(); |
1da177e4 LT |
249 | local_irq_restore(flags); |
250 | ||
251 | start = now; | |
252 | this = port->mask; | |
253 | i = 0; | |
254 | ||
255 | do { | |
256 | loop = now; | |
257 | last = this; | |
258 | ||
259 | local_irq_disable(); | |
260 | this = gameport_read(gameport) & port->mask; | |
76460a7b | 261 | now = get_time(); |
1da177e4 LT |
262 | local_irq_restore(flags); |
263 | ||
76460a7b | 264 | if ((last ^ this) && (delta(loop, now) < loopout)) { |
1da177e4 LT |
265 | data[i] = last ^ this; |
266 | time[i] = now; | |
267 | i++; | |
268 | } | |
269 | ||
76460a7b | 270 | } while (this && (i < 4) && (delta(start, now) < timeout)); |
1da177e4 LT |
271 | |
272 | this <<= 4; | |
273 | ||
274 | for (--i; i >= 0; i--) { | |
275 | this |= data[i]; | |
276 | for (j = 0; j < 4; j++) | |
277 | if (data[i] & (1 << j)) | |
76460a7b | 278 | port->axes[j] = (delta(start, time[i]) << ANALOG_FUZZ_BITS) / port->loop; |
1da177e4 LT |
279 | } |
280 | ||
281 | return -(this != port->mask); | |
282 | } | |
283 | ||
284 | static int analog_button_read(struct analog_port *port, char saitek, char chf) | |
285 | { | |
286 | unsigned char u; | |
287 | int t = 1, i = 0; | |
288 | int strobe = gameport_time(port->gameport, ANALOG_SAITEK_TIME); | |
289 | ||
290 | u = gameport_read(port->gameport); | |
291 | ||
292 | if (!chf) { | |
293 | port->buttons = (~u >> 4) & 0xf; | |
294 | return 0; | |
295 | } | |
296 | ||
297 | port->buttons = 0; | |
298 | ||
299 | while ((~u & 0xf0) && (i < 16) && t) { | |
300 | port->buttons |= 1 << analog_chf[(~u >> 4) & 0xf]; | |
301 | if (!saitek) return 0; | |
302 | udelay(ANALOG_SAITEK_DELAY); | |
303 | t = strobe; | |
304 | gameport_trigger(port->gameport); | |
305 | while (((u = gameport_read(port->gameport)) & port->mask) && t) t--; | |
306 | i++; | |
307 | } | |
308 | ||
309 | return -(!t || (i == 16)); | |
310 | } | |
311 | ||
312 | /* | |
313 | * analog_poll() repeatedly polls the Analog joysticks. | |
314 | */ | |
315 | ||
316 | static void analog_poll(struct gameport *gameport) | |
317 | { | |
318 | struct analog_port *port = gameport_get_drvdata(gameport); | |
319 | int i; | |
320 | ||
321 | char saitek = !!(port->analog[0].mask & ANALOG_SAITEK); | |
322 | char chf = !!(port->analog[0].mask & ANALOG_ANY_CHF); | |
323 | ||
324 | if (port->cooked) { | |
325 | port->bads -= gameport_cooked_read(port->gameport, port->axes, &port->buttons); | |
326 | if (chf) | |
327 | port->buttons = port->buttons ? (1 << analog_chf[port->buttons]) : 0; | |
328 | port->reads++; | |
329 | } else { | |
330 | if (!port->axtime--) { | |
331 | port->bads -= analog_cooked_read(port); | |
332 | port->bads -= analog_button_read(port, saitek, chf); | |
333 | port->reads++; | |
334 | port->axtime = ANALOG_AXIS_TIME - 1; | |
335 | } else { | |
336 | if (!saitek) | |
337 | analog_button_read(port, saitek, chf); | |
338 | } | |
339 | } | |
340 | ||
341 | for (i = 0; i < 2; i++) | |
342 | if (port->analog[i].mask) | |
343 | analog_decode(port->analog + i, port->axes, port->initial, port->buttons); | |
344 | } | |
345 | ||
346 | /* | |
347 | * analog_open() is a callback from the input open routine. | |
348 | */ | |
349 | ||
350 | static int analog_open(struct input_dev *dev) | |
351 | { | |
8715c1cf | 352 | struct analog_port *port = input_get_drvdata(dev); |
1da177e4 LT |
353 | |
354 | gameport_start_polling(port->gameport); | |
355 | return 0; | |
356 | } | |
357 | ||
358 | /* | |
359 | * analog_close() is a callback from the input close routine. | |
360 | */ | |
361 | ||
362 | static void analog_close(struct input_dev *dev) | |
363 | { | |
8715c1cf | 364 | struct analog_port *port = input_get_drvdata(dev); |
1da177e4 LT |
365 | |
366 | gameport_stop_polling(port->gameport); | |
367 | } | |
368 | ||
369 | /* | |
370 | * analog_calibrate_timer() calibrates the timer and computes loop | |
371 | * and timeout values for a joystick port. | |
372 | */ | |
373 | ||
374 | static void analog_calibrate_timer(struct analog_port *port) | |
375 | { | |
376 | struct gameport *gameport = port->gameport; | |
76460a7b TI |
377 | unsigned int i, t, tx; |
378 | u64 t1, t2, t3; | |
1da177e4 LT |
379 | unsigned long flags; |
380 | ||
76460a7b TI |
381 | if (use_ktime) { |
382 | port->speed = 1000000; | |
383 | } else { | |
384 | local_irq_save(flags); | |
385 | t1 = get_time(); | |
1da177e4 | 386 | #ifdef FAKE_TIME |
76460a7b | 387 | analog_faketime += 830; |
1da177e4 | 388 | #endif |
76460a7b TI |
389 | mdelay(1); |
390 | t2 = get_time(); | |
391 | t3 = get_time(); | |
392 | local_irq_restore(flags); | |
1da177e4 | 393 | |
76460a7b TI |
394 | port->speed = delta(t1, t2) - delta(t2, t3); |
395 | } | |
1da177e4 LT |
396 | |
397 | tx = ~0; | |
398 | ||
399 | for (i = 0; i < 50; i++) { | |
400 | local_irq_save(flags); | |
76460a7b TI |
401 | t1 = get_time(); |
402 | for (t = 0; t < 50; t++) { | |
403 | gameport_read(gameport); | |
404 | t2 = get_time(); | |
405 | } | |
406 | t3 = get_time(); | |
1da177e4 LT |
407 | local_irq_restore(flags); |
408 | udelay(i); | |
76460a7b | 409 | t = delta(t1, t2) - delta(t2, t3); |
1da177e4 LT |
410 | if (t < tx) tx = t; |
411 | } | |
412 | ||
413 | port->loop = tx / 50; | |
414 | } | |
415 | ||
416 | /* | |
417 | * analog_name() constructs a name for an analog joystick. | |
418 | */ | |
419 | ||
420 | static void analog_name(struct analog *analog) | |
421 | { | |
10ca4c0a DT |
422 | snprintf(analog->name, sizeof(analog->name), "Analog %d-axis %d-button", |
423 | hweight8(analog->mask & ANALOG_AXES_STD), | |
424 | hweight8(analog->mask & ANALOG_BTNS_STD) + !!(analog->mask & ANALOG_BTNS_CHF) * 2 + | |
425 | hweight16(analog->mask & ANALOG_BTNS_GAMEPAD) + !!(analog->mask & ANALOG_HBTN_CHF) * 4); | |
1da177e4 LT |
426 | |
427 | if (analog->mask & ANALOG_HATS_ALL) | |
10ca4c0a DT |
428 | snprintf(analog->name, sizeof(analog->name), "%s %d-hat", |
429 | analog->name, hweight16(analog->mask & ANALOG_HATS_ALL)); | |
1da177e4 LT |
430 | |
431 | if (analog->mask & ANALOG_HAT_FCS) | |
10ca4c0a | 432 | strlcat(analog->name, " FCS", sizeof(analog->name)); |
1da177e4 | 433 | if (analog->mask & ANALOG_ANY_CHF) |
10ca4c0a DT |
434 | strlcat(analog->name, (analog->mask & ANALOG_SAITEK) ? " Saitek" : " CHF", |
435 | sizeof(analog->name)); | |
1da177e4 | 436 | |
10ca4c0a DT |
437 | strlcat(analog->name, (analog->mask & ANALOG_GAMEPAD) ? " gamepad": " joystick", |
438 | sizeof(analog->name)); | |
1da177e4 LT |
439 | } |
440 | ||
441 | /* | |
442 | * analog_init_device() | |
443 | */ | |
444 | ||
17dd3f0f | 445 | static int analog_init_device(struct analog_port *port, struct analog *analog, int index) |
1da177e4 | 446 | { |
17dd3f0f | 447 | struct input_dev *input_dev; |
1da177e4 | 448 | int i, j, t, v, w, x, y, z; |
127278ce | 449 | int error; |
1da177e4 LT |
450 | |
451 | analog_name(analog); | |
10ca4c0a DT |
452 | snprintf(analog->phys, sizeof(analog->phys), |
453 | "%s/input%d", port->gameport->phys, index); | |
1da177e4 LT |
454 | analog->buttons = (analog->mask & ANALOG_GAMEPAD) ? analog_pad_btn : analog_joy_btn; |
455 | ||
17dd3f0f DT |
456 | analog->dev = input_dev = input_allocate_device(); |
457 | if (!input_dev) | |
458 | return -ENOMEM; | |
1da177e4 | 459 | |
17dd3f0f DT |
460 | input_dev->name = analog->name; |
461 | input_dev->phys = analog->phys; | |
462 | input_dev->id.bustype = BUS_GAMEPORT; | |
463 | input_dev->id.vendor = GAMEPORT_ID_VENDOR_ANALOG; | |
464 | input_dev->id.product = analog->mask >> 4; | |
465 | input_dev->id.version = 0x0100; | |
935e658e | 466 | input_dev->dev.parent = &port->gameport->dev; |
1da177e4 | 467 | |
8715c1cf DT |
468 | input_set_drvdata(input_dev, port); |
469 | ||
17dd3f0f DT |
470 | input_dev->open = analog_open; |
471 | input_dev->close = analog_close; | |
8715c1cf | 472 | |
7b19ada2 | 473 | input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS); |
1da177e4 LT |
474 | |
475 | for (i = j = 0; i < 4; i++) | |
476 | if (analog->mask & (1 << i)) { | |
477 | ||
478 | t = analog_axes[j]; | |
479 | x = port->axes[i]; | |
480 | y = (port->axes[0] + port->axes[1]) >> 1; | |
481 | z = y - port->axes[i]; | |
482 | z = z > 0 ? z : -z; | |
483 | v = (x >> 3); | |
484 | w = (x >> 3); | |
485 | ||
1da177e4 LT |
486 | if ((i == 2 || i == 3) && (j == 2 || j == 3) && (z > (y >> 3))) |
487 | x = y; | |
488 | ||
489 | if (analog->mask & ANALOG_SAITEK) { | |
490 | if (i == 2) x = port->axes[i]; | |
491 | v = x - (x >> 2); | |
492 | w = (x >> 4); | |
493 | } | |
494 | ||
17dd3f0f | 495 | input_set_abs_params(input_dev, t, v, (x << 1) - v, port->fuzz, w); |
1da177e4 LT |
496 | j++; |
497 | } | |
498 | ||
499 | for (i = j = 0; i < 3; i++) | |
500 | if (analog->mask & analog_exts[i]) | |
501 | for (x = 0; x < 2; x++) { | |
502 | t = analog_hats[j++]; | |
17dd3f0f | 503 | input_set_abs_params(input_dev, t, -1, 1, 0, 0); |
1da177e4 LT |
504 | } |
505 | ||
506 | for (i = j = 0; i < 4; i++) | |
507 | if (analog->mask & (0x10 << i)) | |
17dd3f0f | 508 | set_bit(analog->buttons[j++], input_dev->keybit); |
1da177e4 LT |
509 | |
510 | if (analog->mask & ANALOG_BTNS_CHF) | |
511 | for (i = 0; i < 2; i++) | |
17dd3f0f | 512 | set_bit(analog->buttons[j++], input_dev->keybit); |
1da177e4 LT |
513 | |
514 | if (analog->mask & ANALOG_HBTN_CHF) | |
515 | for (i = 0; i < 4; i++) | |
17dd3f0f | 516 | set_bit(analog->buttons[j++], input_dev->keybit); |
1da177e4 LT |
517 | |
518 | for (i = 0; i < 4; i++) | |
519 | if (analog->mask & (ANALOG_BTN_TL << i)) | |
17dd3f0f | 520 | set_bit(analog_pads[i], input_dev->keybit); |
1da177e4 LT |
521 | |
522 | analog_decode(analog, port->axes, port->initial, port->buttons); | |
523 | ||
127278ce DT |
524 | error = input_register_device(analog->dev); |
525 | if (error) { | |
526 | input_free_device(analog->dev); | |
527 | return error; | |
528 | } | |
1da177e4 | 529 | |
17dd3f0f | 530 | return 0; |
1da177e4 LT |
531 | } |
532 | ||
533 | /* | |
534 | * analog_init_devices() sets up device-specific values and registers the input devices. | |
535 | */ | |
536 | ||
537 | static int analog_init_masks(struct analog_port *port) | |
538 | { | |
539 | int i; | |
540 | struct analog *analog = port->analog; | |
541 | int max[4]; | |
542 | ||
543 | if (!port->mask) | |
544 | return -1; | |
545 | ||
546 | if ((port->mask & 3) != 3 && port->mask != 0xc) { | |
547 | printk(KERN_WARNING "analog.c: Unknown joystick device found " | |
548 | "(data=%#x, %s), probably not analog joystick.\n", | |
549 | port->mask, port->gameport->phys); | |
550 | return -1; | |
551 | } | |
552 | ||
553 | ||
554 | i = analog_options[0]; /* FIXME !!! - need to specify options for different ports */ | |
555 | ||
556 | analog[0].mask = i & 0xfffff; | |
557 | ||
558 | analog[0].mask &= ~(ANALOG_AXES_STD | ANALOG_HAT_FCS | ANALOG_BTNS_GAMEPAD) | |
559 | | port->mask | ((port->mask << 8) & ANALOG_HAT_FCS) | |
560 | | ((port->mask << 10) & ANALOG_BTNS_TLR) | ((port->mask << 12) & ANALOG_BTNS_TLR2); | |
561 | ||
562 | analog[0].mask &= ~(ANALOG_HAT2_CHF) | |
563 | | ((analog[0].mask & ANALOG_HBTN_CHF) ? 0 : ANALOG_HAT2_CHF); | |
564 | ||
565 | analog[0].mask &= ~(ANALOG_THROTTLE | ANALOG_BTN_TR | ANALOG_BTN_TR2) | |
566 | | ((~analog[0].mask & ANALOG_HAT_FCS) >> 8) | |
567 | | ((~analog[0].mask & ANALOG_HAT_FCS) << 2) | |
568 | | ((~analog[0].mask & ANALOG_HAT_FCS) << 4); | |
569 | ||
570 | analog[0].mask &= ~(ANALOG_THROTTLE | ANALOG_RUDDER) | |
571 | | (((~analog[0].mask & ANALOG_BTNS_TLR ) >> 10) | |
572 | & ((~analog[0].mask & ANALOG_BTNS_TLR2) >> 12)); | |
573 | ||
574 | analog[1].mask = ((i >> 20) & 0xff) | ((i >> 12) & 0xf0000); | |
575 | ||
576 | analog[1].mask &= (analog[0].mask & ANALOG_EXTENSIONS) ? ANALOG_GAMEPAD | |
577 | : (((ANALOG_BTNS_STD | port->mask) & ~analog[0].mask) | ANALOG_GAMEPAD); | |
578 | ||
579 | if (port->cooked) { | |
580 | ||
581 | for (i = 0; i < 4; i++) max[i] = port->axes[i] << 1; | |
582 | ||
583 | if ((analog[0].mask & 0x7) == 0x7) max[2] = (max[0] + max[1]) >> 1; | |
584 | if ((analog[0].mask & 0xb) == 0xb) max[3] = (max[0] + max[1]) >> 1; | |
585 | if ((analog[0].mask & ANALOG_BTN_TL) && !(analog[0].mask & ANALOG_BTN_TL2)) max[2] >>= 1; | |
586 | if ((analog[0].mask & ANALOG_BTN_TR) && !(analog[0].mask & ANALOG_BTN_TR2)) max[3] >>= 1; | |
587 | if ((analog[0].mask & ANALOG_HAT_FCS)) max[3] >>= 1; | |
588 | ||
589 | gameport_calibrate(port->gameport, port->axes, max); | |
590 | } | |
591 | ||
592 | for (i = 0; i < 4; i++) | |
593 | port->initial[i] = port->axes[i]; | |
594 | ||
595 | return -!(analog[0].mask || analog[1].mask); | |
596 | } | |
597 | ||
598 | static int analog_init_port(struct gameport *gameport, struct gameport_driver *drv, struct analog_port *port) | |
599 | { | |
600 | int i, t, u, v; | |
601 | ||
602 | port->gameport = gameport; | |
603 | ||
604 | gameport_set_drvdata(gameport, port); | |
605 | ||
606 | if (!gameport_open(gameport, drv, GAMEPORT_MODE_RAW)) { | |
607 | ||
608 | analog_calibrate_timer(port); | |
609 | ||
610 | gameport_trigger(gameport); | |
611 | t = gameport_read(gameport); | |
612 | msleep(ANALOG_MAX_TIME); | |
613 | port->mask = (gameport_read(gameport) ^ t) & t & 0xf; | |
614 | port->fuzz = (port->speed * ANALOG_FUZZ_MAGIC) / port->loop / 1000 + ANALOG_FUZZ_BITS; | |
615 | ||
616 | for (i = 0; i < ANALOG_INIT_RETRIES; i++) { | |
617 | if (!analog_cooked_read(port)) | |
618 | break; | |
619 | msleep(ANALOG_MAX_TIME); | |
620 | } | |
621 | ||
622 | u = v = 0; | |
623 | ||
624 | msleep(ANALOG_MAX_TIME); | |
625 | t = gameport_time(gameport, ANALOG_MAX_TIME * 1000); | |
626 | gameport_trigger(gameport); | |
627 | while ((gameport_read(port->gameport) & port->mask) && (u < t)) | |
628 | u++; | |
629 | udelay(ANALOG_SAITEK_DELAY); | |
630 | t = gameport_time(gameport, ANALOG_SAITEK_TIME); | |
631 | gameport_trigger(gameport); | |
632 | while ((gameport_read(port->gameport) & port->mask) && (v < t)) | |
633 | v++; | |
634 | ||
635 | if (v < (u >> 1)) { /* FIXME - more than one port */ | |
636 | analog_options[0] |= /* FIXME - more than one port */ | |
637 | ANALOG_SAITEK | ANALOG_BTNS_CHF | ANALOG_HBTN_CHF | ANALOG_HAT1_CHF; | |
638 | return 0; | |
639 | } | |
640 | ||
641 | gameport_close(gameport); | |
642 | } | |
643 | ||
644 | if (!gameport_open(gameport, drv, GAMEPORT_MODE_COOKED)) { | |
645 | ||
646 | for (i = 0; i < ANALOG_INIT_RETRIES; i++) | |
647 | if (!gameport_cooked_read(gameport, port->axes, &port->buttons)) | |
648 | break; | |
649 | for (i = 0; i < 4; i++) | |
650 | if (port->axes[i] != -1) | |
651 | port->mask |= 1 << i; | |
652 | ||
653 | port->fuzz = gameport->fuzz; | |
654 | port->cooked = 1; | |
655 | return 0; | |
656 | } | |
657 | ||
658 | return gameport_open(gameport, drv, GAMEPORT_MODE_RAW); | |
659 | } | |
660 | ||
661 | static int analog_connect(struct gameport *gameport, struct gameport_driver *drv) | |
662 | { | |
663 | struct analog_port *port; | |
664 | int i; | |
665 | int err; | |
666 | ||
a97e148a | 667 | if (!(port = kzalloc(sizeof(struct analog_port), GFP_KERNEL))) |
29c2e124 | 668 | return -ENOMEM; |
1da177e4 LT |
669 | |
670 | err = analog_init_port(gameport, drv, port); | |
17dd3f0f DT |
671 | if (err) |
672 | goto fail1; | |
1da177e4 LT |
673 | |
674 | err = analog_init_masks(port); | |
17dd3f0f DT |
675 | if (err) |
676 | goto fail2; | |
1da177e4 LT |
677 | |
678 | gameport_set_poll_handler(gameport, analog_poll); | |
679 | gameport_set_poll_interval(gameport, 10); | |
680 | ||
681 | for (i = 0; i < 2; i++) | |
17dd3f0f DT |
682 | if (port->analog[i].mask) { |
683 | err = analog_init_device(port, port->analog + i, i); | |
684 | if (err) | |
685 | goto fail3; | |
686 | } | |
1da177e4 LT |
687 | |
688 | return 0; | |
17dd3f0f DT |
689 | |
690 | fail3: while (--i >= 0) | |
127278ce DT |
691 | if (port->analog[i].mask) |
692 | input_unregister_device(port->analog[i].dev); | |
17dd3f0f DT |
693 | fail2: gameport_close(gameport); |
694 | fail1: gameport_set_drvdata(gameport, NULL); | |
695 | kfree(port); | |
696 | return err; | |
1da177e4 LT |
697 | } |
698 | ||
699 | static void analog_disconnect(struct gameport *gameport) | |
700 | { | |
1da177e4 | 701 | struct analog_port *port = gameport_get_drvdata(gameport); |
17dd3f0f | 702 | int i; |
1da177e4 LT |
703 | |
704 | for (i = 0; i < 2; i++) | |
705 | if (port->analog[i].mask) | |
17dd3f0f | 706 | input_unregister_device(port->analog[i].dev); |
1da177e4 LT |
707 | gameport_close(gameport); |
708 | gameport_set_drvdata(gameport, NULL); | |
709 | printk(KERN_INFO "analog.c: %d out of %d reads (%d%%) on %s failed\n", | |
710 | port->bads, port->reads, port->reads ? (port->bads * 100 / port->reads) : 0, | |
711 | port->gameport->phys); | |
712 | kfree(port); | |
713 | } | |
714 | ||
715 | struct analog_types { | |
716 | char *name; | |
717 | int value; | |
718 | }; | |
719 | ||
720 | static struct analog_types analog_types[] = { | |
721 | { "none", 0x00000000 }, | |
722 | { "auto", 0x000000ff }, | |
723 | { "2btn", 0x0000003f }, | |
724 | { "y-joy", 0x0cc00033 }, | |
725 | { "y-pad", 0x8cc80033 }, | |
726 | { "fcs", 0x000008f7 }, | |
727 | { "chf", 0x000002ff }, | |
728 | { "fullchf", 0x000007ff }, | |
729 | { "gamepad", 0x000830f3 }, | |
730 | { "gamepad8", 0x0008f0f3 }, | |
731 | { NULL, 0 } | |
732 | }; | |
733 | ||
734 | static void analog_parse_options(void) | |
735 | { | |
736 | int i, j; | |
737 | char *end; | |
738 | ||
739 | for (i = 0; i < js_nargs; i++) { | |
740 | ||
741 | for (j = 0; analog_types[j].name; j++) | |
742 | if (!strcmp(analog_types[j].name, js[i])) { | |
743 | analog_options[i] = analog_types[j].value; | |
744 | break; | |
745 | } | |
746 | if (analog_types[j].name) continue; | |
747 | ||
748 | analog_options[i] = simple_strtoul(js[i], &end, 0); | |
749 | if (end != js[i]) continue; | |
750 | ||
751 | analog_options[i] = 0xff; | |
752 | if (!strlen(js[i])) continue; | |
753 | ||
754 | printk(KERN_WARNING "analog.c: Bad config for port %d - \"%s\"\n", i, js[i]); | |
755 | } | |
756 | ||
757 | for (; i < ANALOG_PORTS; i++) | |
758 | analog_options[i] = 0xff; | |
759 | } | |
760 | ||
761 | /* | |
762 | * The gameport device structure. | |
763 | */ | |
764 | ||
765 | static struct gameport_driver analog_drv = { | |
766 | .driver = { | |
767 | .name = "analog", | |
768 | }, | |
769 | .description = DRIVER_DESC, | |
770 | .connect = analog_connect, | |
771 | .disconnect = analog_disconnect, | |
772 | }; | |
773 | ||
774 | static int __init analog_init(void) | |
775 | { | |
776 | analog_parse_options(); | |
2547203d | 777 | return gameport_register_driver(&analog_drv); |
1da177e4 LT |
778 | } |
779 | ||
780 | static void __exit analog_exit(void) | |
781 | { | |
782 | gameport_unregister_driver(&analog_drv); | |
783 | } | |
784 | ||
785 | module_init(analog_init); | |
786 | module_exit(analog_exit); |