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Merge tag 'trace-printf-v6.13' of git://git.kernel.org/pub/scm/linux/kernel/git/trace...
[drm/drm-misc.git] / drivers / input / joystick / analog.c
blobc709b58d770a2c99765179a0e862603aa9efc234
1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3 * Copyright (c) 1996-2001 Vojtech Pavlik
4 */
5
6 /*
7 * Analog joystick and gamepad driver for Linux
8 */
9
10 #include <linux/delay.h>
11 #include <linux/kernel.h>
12 #include <linux/module.h>
13 #include <linux/slab.h>
14 #include <linux/bitops.h>
15 #include <linux/init.h>
16 #include <linux/input.h>
17 #include <linux/gameport.h>
18 #include <linux/jiffies.h>
19 #include <linux/seq_buf.h>
20 #include <linux/timex.h>
21 #include <linux/timekeeping.h>
22
23 #define DRIVER_DESC "Analog joystick and gamepad driver"
24
25 MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>");
26 MODULE_DESCRIPTION(DRIVER_DESC);
27 MODULE_LICENSE("GPL");
28
29 /*
30 * Option parsing.
31 */
32
33 #define ANALOG_PORTS 16
34
35 static char *js[ANALOG_PORTS];
36 static unsigned int js_nargs;
37 static int analog_options[ANALOG_PORTS];
38 module_param_array_named(map, js, charp, &js_nargs, 0);
39 MODULE_PARM_DESC(map, "Describes analog joysticks type/capabilities");
40
41 /*
42 * Times, feature definitions.
43 */
44
45 #define ANALOG_RUDDER 0x00004
46 #define ANALOG_THROTTLE 0x00008
47 #define ANALOG_AXES_STD 0x0000f
48 #define ANALOG_BTNS_STD 0x000f0
49
50 #define ANALOG_BTNS_CHF 0x00100
51 #define ANALOG_HAT1_CHF 0x00200
52 #define ANALOG_HAT2_CHF 0x00400
53 #define ANALOG_HAT_FCS 0x00800
54 #define ANALOG_HATS_ALL 0x00e00
55 #define ANALOG_BTN_TL 0x01000
56 #define ANALOG_BTN_TR 0x02000
57 #define ANALOG_BTN_TL2 0x04000
58 #define ANALOG_BTN_TR2 0x08000
59 #define ANALOG_BTNS_TLR 0x03000
60 #define ANALOG_BTNS_TLR2 0x0c000
61 #define ANALOG_BTNS_GAMEPAD 0x0f000
62
63 #define ANALOG_HBTN_CHF 0x10000
64 #define ANALOG_ANY_CHF 0x10700
65 #define ANALOG_SAITEK 0x20000
66 #define ANALOG_EXTENSIONS 0x7ff00
67 #define ANALOG_GAMEPAD 0x80000
68
69 #define ANALOG_MAX_TIME 3 /* 3 ms */
70 #define ANALOG_LOOP_TIME 2000 /* 2 * loop */
71 #define ANALOG_SAITEK_DELAY 200 /* 200 us */
72 #define ANALOG_SAITEK_TIME 2000 /* 2000 us */
73 #define ANALOG_AXIS_TIME 2 /* 2 * refresh */
74 #define ANALOG_INIT_RETRIES 8 /* 8 times */
75 #define ANALOG_FUZZ_BITS 2 /* 2 bit more */
76 #define ANALOG_FUZZ_MAGIC 36 /* 36 u*ms/loop */
77
78 #define ANALOG_MAX_NAME_LENGTH 128
79 #define ANALOG_MAX_PHYS_LENGTH 32
80
81 static short analog_axes[] = { ABS_X, ABS_Y, ABS_RUDDER, ABS_THROTTLE };
82 static short analog_hats[] = { ABS_HAT0X, ABS_HAT0Y, ABS_HAT1X, ABS_HAT1Y, ABS_HAT2X, ABS_HAT2Y };
83 static short analog_pads[] = { BTN_Y, BTN_Z, BTN_TL, BTN_TR };
84 static short analog_exts[] = { ANALOG_HAT1_CHF, ANALOG_HAT2_CHF, ANALOG_HAT_FCS };
85 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 };
86 static short analog_joy_btn[] = { BTN_TRIGGER, BTN_THUMB, BTN_TOP, BTN_TOP2, BTN_BASE, BTN_BASE2,
87 BTN_BASE3, BTN_BASE4, BTN_BASE5, BTN_BASE6 };
88
89 static unsigned char analog_chf[] = { 0xf, 0x0, 0x1, 0x9, 0x2, 0x4, 0xc, 0x8, 0x3, 0x5, 0xb, 0x7, 0xd, 0xe, 0xa, 0x6 };
90
91 struct analog {
92 struct input_dev *dev;
93 int mask;
94 short *buttons;
95 char name[ANALOG_MAX_NAME_LENGTH];
96 char phys[ANALOG_MAX_PHYS_LENGTH];
97 };
98
99 struct analog_port {
100 struct gameport *gameport;
101 struct analog analog[2];
102 unsigned char mask;
103 char saitek;
104 char cooked;
105 int bads;
106 int reads;
107 int loop;
108 int fuzz;
109 int axes[4];
110 int buttons;
111 int initial[4];
112 int axtime;
113 };
114
115 /*
116 * analog_decode() decodes analog joystick data and reports input events.
117 */
118
119 static void analog_decode(struct analog *analog, int *axes, int *initial, int buttons)
120 {
121 struct input_dev *dev = analog->dev;
122 int i, j;
123
124 if (analog->mask & ANALOG_HAT_FCS)
125 for (i = 0; i < 4; i++)
126 if (axes[3] < ((initial[3] * ((i << 1) + 1)) >> 3)) {
127 buttons |= 1 << (i + 14);
128 break;
129 }
130
131 for (i = j = 0; i < 6; i++)
132 if (analog->mask & (0x10 << i))
133 input_report_key(dev, analog->buttons[j++], (buttons >> i) & 1);
134
135 if (analog->mask & ANALOG_HBTN_CHF)
136 for (i = 0; i < 4; i++)
137 input_report_key(dev, analog->buttons[j++], (buttons >> (i + 10)) & 1);
138
139 if (analog->mask & ANALOG_BTN_TL)
140 input_report_key(dev, analog_pads[0], axes[2] < (initial[2] >> 1));
141 if (analog->mask & ANALOG_BTN_TR)
142 input_report_key(dev, analog_pads[1], axes[3] < (initial[3] >> 1));
143 if (analog->mask & ANALOG_BTN_TL2)
144 input_report_key(dev, analog_pads[2], axes[2] > (initial[2] + (initial[2] >> 1)));
145 if (analog->mask & ANALOG_BTN_TR2)
146 input_report_key(dev, analog_pads[3], axes[3] > (initial[3] + (initial[3] >> 1)));
147
148 for (i = j = 0; i < 4; i++)
149 if (analog->mask & (1 << i))
150 input_report_abs(dev, analog_axes[j++], axes[i]);
151
152 for (i = j = 0; i < 3; i++)
153 if (analog->mask & analog_exts[i]) {
154 input_report_abs(dev, analog_hats[j++],
155 ((buttons >> ((i << 2) + 7)) & 1) - ((buttons >> ((i << 2) + 9)) & 1));
156 input_report_abs(dev, analog_hats[j++],
157 ((buttons >> ((i << 2) + 8)) & 1) - ((buttons >> ((i << 2) + 6)) & 1));
158 }
159
160 input_sync(dev);
161 }
162
163 /*
164 * analog_cooked_read() reads analog joystick data.
165 */
166
167 static int analog_cooked_read(struct analog_port *port)
168 {
169 struct gameport *gameport = port->gameport;
170 ktime_t time[4], start, loop, now;
171 unsigned int loopout, timeout;
172 unsigned char data[4], this, last;
173 unsigned long flags;
174 int i, j;
175
176 loopout = (ANALOG_LOOP_TIME * port->loop) / 1000;
177 timeout = ANALOG_MAX_TIME * NSEC_PER_MSEC;
178
179 local_irq_save(flags);
180 gameport_trigger(gameport);
181 now = ktime_get();
182 local_irq_restore(flags);
183
184 start = now;
185 this = port->mask;
186 i = 0;
187
188 do {
189 loop = now;
190 last = this;
191
192 local_irq_disable();
193 this = gameport_read(gameport) & port->mask;
194 now = ktime_get();
195 local_irq_restore(flags);
196
197 if ((last ^ this) && (ktime_sub(now, loop) < loopout)) {
198 data[i] = last ^ this;
199 time[i] = now;
200 i++;
201 }
202
203 } while (this && (i < 4) && (ktime_sub(now, start) < timeout));
204
205 this <<= 4;
206
207 for (--i; i >= 0; i--) {
208 this |= data[i];
209 for (j = 0; j < 4; j++)
210 if (data[i] & (1 << j))
211 port->axes[j] = ((u32)ktime_sub(time[i], start) << ANALOG_FUZZ_BITS) / port->loop;
212 }
213
214 return -(this != port->mask);
215 }
216
217 static int analog_button_read(struct analog_port *port, char saitek, char chf)
218 {
219 unsigned char u;
220 int t = 1, i = 0;
221 int strobe = gameport_time(port->gameport, ANALOG_SAITEK_TIME);
222
223 u = gameport_read(port->gameport);
224
225 if (!chf) {
226 port->buttons = (~u >> 4) & 0xf;
227 return 0;
228 }
229
230 port->buttons = 0;
231
232 while ((~u & 0xf0) && (i < 16) && t) {
233 port->buttons |= 1 << analog_chf[(~u >> 4) & 0xf];
234 if (!saitek) return 0;
235 udelay(ANALOG_SAITEK_DELAY);
236 t = strobe;
237 gameport_trigger(port->gameport);
238 while (((u = gameport_read(port->gameport)) & port->mask) && t) t--;
239 i++;
240 }
241
242 return -(!t || (i == 16));
243 }
244
245 /*
246 * analog_poll() repeatedly polls the Analog joysticks.
247 */
248
249 static void analog_poll(struct gameport *gameport)
250 {
251 struct analog_port *port = gameport_get_drvdata(gameport);
252 int i;
253
254 char saitek = !!(port->analog[0].mask & ANALOG_SAITEK);
255 char chf = !!(port->analog[0].mask & ANALOG_ANY_CHF);
256
257 if (port->cooked) {
258 port->bads -= gameport_cooked_read(port->gameport, port->axes, &port->buttons);
259 if (chf)
260 port->buttons = port->buttons ? (1 << analog_chf[port->buttons]) : 0;
261 port->reads++;
262 } else {
263 if (!port->axtime--) {
264 port->bads -= analog_cooked_read(port);
265 port->bads -= analog_button_read(port, saitek, chf);
266 port->reads++;
267 port->axtime = ANALOG_AXIS_TIME - 1;
268 } else {
269 if (!saitek)
270 analog_button_read(port, saitek, chf);
271 }
272 }
273
274 for (i = 0; i < 2; i++)
275 if (port->analog[i].mask)
276 analog_decode(port->analog + i, port->axes, port->initial, port->buttons);
277 }
278
279 /*
280 * analog_open() is a callback from the input open routine.
281 */
282
283 static int analog_open(struct input_dev *dev)
284 {
285 struct analog_port *port = input_get_drvdata(dev);
286
287 gameport_start_polling(port->gameport);
288 return 0;
289 }
290
291 /*
292 * analog_close() is a callback from the input close routine.
293 */
294
295 static void analog_close(struct input_dev *dev)
296 {
297 struct analog_port *port = input_get_drvdata(dev);
298
299 gameport_stop_polling(port->gameport);
300 }
301
302 /*
303 * analog_calibrate_timer() calibrates the timer and computes loop
304 * and timeout values for a joystick port.
305 */
306
307 static void analog_calibrate_timer(struct analog_port *port)
308 {
309 struct gameport *gameport = port->gameport;
310 unsigned int i, t, tx;
311 ktime_t t1, t2, t3;
312 unsigned long flags;
313
314 tx = ~0;
315
316 for (i = 0; i < 50; i++) {
317 local_irq_save(flags);
318 t1 = ktime_get();
319 for (t = 0; t < 50; t++) {
320 gameport_read(gameport);
321 t2 = ktime_get();
322 }
323 t3 = ktime_get();
324 local_irq_restore(flags);
325 udelay(i);
326 t = ktime_sub(t2, t1) - ktime_sub(t3, t2);
327 if (t < tx) tx = t;
328 }
329
330 port->loop = tx / 50;
331 }
332
333 /*
334 * analog_name() constructs a name for an analog joystick.
335 */
336
337 static void analog_name(struct analog *analog)
338 {
339 struct seq_buf s;
340
341 seq_buf_init(&s, analog->name, sizeof(analog->name));
342 seq_buf_printf(&s, "Analog %d-axis %d-button",
343 hweight8(analog->mask & ANALOG_AXES_STD),
344 hweight8(analog->mask & ANALOG_BTNS_STD) + !!(analog->mask & ANALOG_BTNS_CHF) * 2 +
345 hweight16(analog->mask & ANALOG_BTNS_GAMEPAD) + !!(analog->mask & ANALOG_HBTN_CHF) * 4);
346
347 if (analog->mask & ANALOG_HATS_ALL)
348 seq_buf_printf(&s, " %d-hat",
349 hweight16(analog->mask & ANALOG_HATS_ALL));
350
351 if (analog->mask & ANALOG_HAT_FCS)
352 seq_buf_printf(&s, " FCS");
353 if (analog->mask & ANALOG_ANY_CHF)
354 seq_buf_printf(&s, (analog->mask & ANALOG_SAITEK) ? " Saitek" : " CHF");
355
356 seq_buf_printf(&s, (analog->mask & ANALOG_GAMEPAD) ? " gamepad" : " joystick");
357 }
358
359 /*
360 * analog_init_device()
361 */
362
363 static int analog_init_device(struct analog_port *port, struct analog *analog, int index)
364 {
365 struct input_dev *input_dev;
366 int i, j, t, v, w, x, y, z;
367 int error;
368
369 analog_name(analog);
370 snprintf(analog->phys, sizeof(analog->phys),
371 "%s/input%d", port->gameport->phys, index);
372 analog->buttons = (analog->mask & ANALOG_GAMEPAD) ? analog_pad_btn : analog_joy_btn;
373
374 analog->dev = input_dev = input_allocate_device();
375 if (!input_dev)
376 return -ENOMEM;
377
378 input_dev->name = analog->name;
379 input_dev->phys = analog->phys;
380 input_dev->id.bustype = BUS_GAMEPORT;
381 input_dev->id.vendor = GAMEPORT_ID_VENDOR_ANALOG;
382 input_dev->id.product = analog->mask >> 4;
383 input_dev->id.version = 0x0100;
384 input_dev->dev.parent = &port->gameport->dev;
385
386 input_set_drvdata(input_dev, port);
387
388 input_dev->open = analog_open;
389 input_dev->close = analog_close;
390
391 input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS);
392
393 for (i = j = 0; i < 4; i++)
394 if (analog->mask & (1 << i)) {
395
396 t = analog_axes[j];
397 x = port->axes[i];
398 y = (port->axes[0] + port->axes[1]) >> 1;
399 z = y - port->axes[i];
400 z = z > 0 ? z : -z;
401 v = (x >> 3);
402 w = (x >> 3);
403
404 if ((i == 2 || i == 3) && (j == 2 || j == 3) && (z > (y >> 3)))
405 x = y;
406
407 if (analog->mask & ANALOG_SAITEK) {
408 if (i == 2) x = port->axes[i];
409 v = x - (x >> 2);
410 w = (x >> 4);
411 }
412
413 input_set_abs_params(input_dev, t, v, (x << 1) - v, port->fuzz, w);
414 j++;
415 }
416
417 for (i = j = 0; i < 3; i++)
418 if (analog->mask & analog_exts[i])
419 for (x = 0; x < 2; x++) {
420 t = analog_hats[j++];
421 input_set_abs_params(input_dev, t, -1, 1, 0, 0);
422 }
423
424 for (i = j = 0; i < 4; i++)
425 if (analog->mask & (0x10 << i))
426 set_bit(analog->buttons[j++], input_dev->keybit);
427
428 if (analog->mask & ANALOG_BTNS_CHF)
429 for (i = 0; i < 2; i++)
430 set_bit(analog->buttons[j++], input_dev->keybit);
431
432 if (analog->mask & ANALOG_HBTN_CHF)
433 for (i = 0; i < 4; i++)
434 set_bit(analog->buttons[j++], input_dev->keybit);
435
436 for (i = 0; i < 4; i++)
437 if (analog->mask & (ANALOG_BTN_TL << i))
438 set_bit(analog_pads[i], input_dev->keybit);
439
440 analog_decode(analog, port->axes, port->initial, port->buttons);
441
442 error = input_register_device(analog->dev);
443 if (error) {
444 input_free_device(analog->dev);
445 return error;
446 }
447
448 return 0;
449 }
450
451 /*
452 * analog_init_devices() sets up device-specific values and registers the input devices.
453 */
454
455 static int analog_init_masks(struct analog_port *port)
456 {
457 int i;
458 struct analog *analog = port->analog;
459 int max[4];
460
461 if (!port->mask)
462 return -1;
463
464 if ((port->mask & 3) != 3 && port->mask != 0xc) {
465 printk(KERN_WARNING "analog.c: Unknown joystick device found "
466 "(data=%#x, %s), probably not analog joystick.\n",
467 port->mask, port->gameport->phys);
468 return -1;
469 }
470
471
472 i = analog_options[0]; /* FIXME !!! - need to specify options for different ports */
473
474 analog[0].mask = i & 0xfffff;
475
476 analog[0].mask &= ~(ANALOG_AXES_STD | ANALOG_HAT_FCS | ANALOG_BTNS_GAMEPAD)
477 | port->mask | ((port->mask << 8) & ANALOG_HAT_FCS)
478 | ((port->mask << 10) & ANALOG_BTNS_TLR) | ((port->mask << 12) & ANALOG_BTNS_TLR2);
479
480 analog[0].mask &= ~(ANALOG_HAT2_CHF)
481 | ((analog[0].mask & ANALOG_HBTN_CHF) ? 0 : ANALOG_HAT2_CHF);
482
483 analog[0].mask &= ~(ANALOG_THROTTLE | ANALOG_BTN_TR | ANALOG_BTN_TR2)
484 | ((~analog[0].mask & ANALOG_HAT_FCS) >> 8)
485 | ((~analog[0].mask & ANALOG_HAT_FCS) << 2)
486 | ((~analog[0].mask & ANALOG_HAT_FCS) << 4);
487
488 analog[0].mask &= ~(ANALOG_THROTTLE | ANALOG_RUDDER)
489 | (((~analog[0].mask & ANALOG_BTNS_TLR ) >> 10)
490 & ((~analog[0].mask & ANALOG_BTNS_TLR2) >> 12));
491
492 analog[1].mask = ((i >> 20) & 0xff) | ((i >> 12) & 0xf0000);
493
494 analog[1].mask &= (analog[0].mask & ANALOG_EXTENSIONS) ? ANALOG_GAMEPAD
495 : (((ANALOG_BTNS_STD | port->mask) & ~analog[0].mask) | ANALOG_GAMEPAD);
496
497 if (port->cooked) {
498
499 for (i = 0; i < 4; i++) max[i] = port->axes[i] << 1;
500
501 if ((analog[0].mask & 0x7) == 0x7) max[2] = (max[0] + max[1]) >> 1;
502 if ((analog[0].mask & 0xb) == 0xb) max[3] = (max[0] + max[1]) >> 1;
503 if ((analog[0].mask & ANALOG_BTN_TL) && !(analog[0].mask & ANALOG_BTN_TL2)) max[2] >>= 1;
504 if ((analog[0].mask & ANALOG_BTN_TR) && !(analog[0].mask & ANALOG_BTN_TR2)) max[3] >>= 1;
505 if ((analog[0].mask & ANALOG_HAT_FCS)) max[3] >>= 1;
506
507 gameport_calibrate(port->gameport, port->axes, max);
508 }
509
510 for (i = 0; i < 4; i++)
511 port->initial[i] = port->axes[i];
512
513 return -!(analog[0].mask || analog[1].mask);
514 }
515
516 static int analog_init_port(struct gameport *gameport, struct gameport_driver *drv, struct analog_port *port)
517 {
518 int i, t, u, v;
519
520 port->gameport = gameport;
521
522 gameport_set_drvdata(gameport, port);
523
524 if (!gameport_open(gameport, drv, GAMEPORT_MODE_RAW)) {
525
526 analog_calibrate_timer(port);
527
528 gameport_trigger(gameport);
529 t = gameport_read(gameport);
530 msleep(ANALOG_MAX_TIME);
531 port->mask = (gameport_read(gameport) ^ t) & t & 0xf;
532 port->fuzz = (NSEC_PER_MSEC * ANALOG_FUZZ_MAGIC) / port->loop / 1000 + ANALOG_FUZZ_BITS;
533
534 for (i = 0; i < ANALOG_INIT_RETRIES; i++) {
535 if (!analog_cooked_read(port))
536 break;
537 msleep(ANALOG_MAX_TIME);
538 }
539
540 u = v = 0;
541
542 msleep(ANALOG_MAX_TIME);
543 t = gameport_time(gameport, ANALOG_MAX_TIME * 1000);
544 gameport_trigger(gameport);
545 while ((gameport_read(port->gameport) & port->mask) && (u < t))
546 u++;
547 udelay(ANALOG_SAITEK_DELAY);
548 t = gameport_time(gameport, ANALOG_SAITEK_TIME);
549 gameport_trigger(gameport);
550 while ((gameport_read(port->gameport) & port->mask) && (v < t))
551 v++;
552
553 if (v < (u >> 1)) { /* FIXME - more than one port */
554 analog_options[0] |= /* FIXME - more than one port */
555 ANALOG_SAITEK | ANALOG_BTNS_CHF | ANALOG_HBTN_CHF | ANALOG_HAT1_CHF;
556 return 0;
557 }
558
559 gameport_close(gameport);
560 }
561
562 if (!gameport_open(gameport, drv, GAMEPORT_MODE_COOKED)) {
563
564 for (i = 0; i < ANALOG_INIT_RETRIES; i++)
565 if (!gameport_cooked_read(gameport, port->axes, &port->buttons))
566 break;
567 for (i = 0; i < 4; i++)
568 if (port->axes[i] != -1)
569 port->mask |= 1 << i;
570
571 port->fuzz = gameport->fuzz;
572 port->cooked = 1;
573 return 0;
574 }
575
576 return gameport_open(gameport, drv, GAMEPORT_MODE_RAW);
577 }
578
579 static int analog_connect(struct gameport *gameport, struct gameport_driver *drv)
580 {
581 struct analog_port *port;
582 int i;
583 int err;
584
585 port = kzalloc(sizeof(*port), GFP_KERNEL);
586 if (!port)
587 return -ENOMEM;
588
589 err = analog_init_port(gameport, drv, port);
590 if (err)
591 goto fail1;
592
593 err = analog_init_masks(port);
594 if (err)
595 goto fail2;
596
597 gameport_set_poll_handler(gameport, analog_poll);
598 gameport_set_poll_interval(gameport, 10);
599
600 for (i = 0; i < 2; i++)
601 if (port->analog[i].mask) {
602 err = analog_init_device(port, port->analog + i, i);
603 if (err)
604 goto fail3;
605 }
606
607 return 0;
608
609 fail3: while (--i >= 0)
610 if (port->analog[i].mask)
611 input_unregister_device(port->analog[i].dev);
612 fail2: gameport_close(gameport);
613 fail1: gameport_set_drvdata(gameport, NULL);
614 kfree(port);
615 return err;
616 }
617
618 static void analog_disconnect(struct gameport *gameport)
619 {
620 struct analog_port *port = gameport_get_drvdata(gameport);
621 int i;
622
623 for (i = 0; i < 2; i++)
624 if (port->analog[i].mask)
625 input_unregister_device(port->analog[i].dev);
626 gameport_close(gameport);
627 gameport_set_drvdata(gameport, NULL);
628 printk(KERN_INFO "analog.c: %d out of %d reads (%d%%) on %s failed\n",
629 port->bads, port->reads, port->reads ? (port->bads * 100 / port->reads) : 0,
630 port->gameport->phys);
631 kfree(port);
632 }
633
634 struct analog_types {
635 char *name;
636 int value;
637 };
638
639 static struct analog_types analog_types[] = {
640 { "none", 0x00000000 },
641 { "auto", 0x000000ff },
642 { "2btn", 0x0000003f },
643 { "y-joy", 0x0cc00033 },
644 { "y-pad", 0x8cc80033 },
645 { "fcs", 0x000008f7 },
646 { "chf", 0x000002ff },
647 { "fullchf", 0x000007ff },
648 { "gamepad", 0x000830f3 },
649 { "gamepad8", 0x0008f0f3 },
650 { NULL, 0 }
651 };
652
653 static void analog_parse_options(void)
654 {
655 int i, j;
656 char *end;
657
658 for (i = 0; i < js_nargs; i++) {
659
660 for (j = 0; analog_types[j].name; j++)
661 if (!strcmp(analog_types[j].name, js[i])) {
662 analog_options[i] = analog_types[j].value;
663 break;
664 }
665 if (analog_types[j].name) continue;
666
667 analog_options[i] = simple_strtoul(js[i], &end, 0);
668 if (end != js[i]) continue;
669
670 analog_options[i] = 0xff;
671 if (!strlen(js[i])) continue;
672
673 printk(KERN_WARNING "analog.c: Bad config for port %d - \"%s\"\n", i, js[i]);
674 }
675
676 for (; i < ANALOG_PORTS; i++)
677 analog_options[i] = 0xff;
678 }
679
680 /*
681 * The gameport device structure.
682 */
683
684 static struct gameport_driver analog_drv = {
685 .driver = {
686 .name = "analog",
687 },
688 .description = DRIVER_DESC,
689 .connect = analog_connect,
690 .disconnect = analog_disconnect,
691 };
692
693 static int __init analog_init(void)
694 {
695 analog_parse_options();
696 return gameport_register_driver(&analog_drv);
697 }
698
699 static void __exit analog_exit(void)
700 {
701 gameport_unregister_driver(&analog_drv);
702 }
703
704 module_init(analog_init);
705 module_exit(analog_exit);
Kernel DRM miscellaneous fixes and cross-tree changes