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[PATCH] Kconfig fix (PHYLIB vs. s390)
[linux-2.6/sactl.git] / drivers / input / mousedev.c
blobc6194a9dd174be5d1a534cc7b962543b112d9f60
1 /*
2 * Input driver to ExplorerPS/2 device driver module.
3 *
4 * Copyright (c) 1999-2002 Vojtech Pavlik
5 * Copyright (c) 2004 Dmitry Torokhov
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License version 2 as published by
9 * the Free Software Foundation.
10 */
11
12 #define MOUSEDEV_MINOR_BASE 32
13 #define MOUSEDEV_MINORS 32
14 #define MOUSEDEV_MIX 31
15
16 #include <linux/slab.h>
17 #include <linux/poll.h>
18 #include <linux/module.h>
19 #include <linux/moduleparam.h>
20 #include <linux/init.h>
21 #include <linux/input.h>
22 #include <linux/config.h>
23 #include <linux/smp_lock.h>
24 #include <linux/random.h>
25 #include <linux/major.h>
26 #include <linux/device.h>
27 #include <linux/devfs_fs_kernel.h>
28 #ifdef CONFIG_INPUT_MOUSEDEV_PSAUX
29 #include <linux/miscdevice.h>
30 #endif
31
32 MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>");
33 MODULE_DESCRIPTION("Mouse (ExplorerPS/2) device interfaces");
34 MODULE_LICENSE("GPL");
35
36 #ifndef CONFIG_INPUT_MOUSEDEV_SCREEN_X
37 #define CONFIG_INPUT_MOUSEDEV_SCREEN_X 1024
38 #endif
39 #ifndef CONFIG_INPUT_MOUSEDEV_SCREEN_Y
40 #define CONFIG_INPUT_MOUSEDEV_SCREEN_Y 768
41 #endif
42
43 static int xres = CONFIG_INPUT_MOUSEDEV_SCREEN_X;
44 module_param(xres, uint, 0);
45 MODULE_PARM_DESC(xres, "Horizontal screen resolution");
46
47 static int yres = CONFIG_INPUT_MOUSEDEV_SCREEN_Y;
48 module_param(yres, uint, 0);
49 MODULE_PARM_DESC(yres, "Vertical screen resolution");
50
51 static unsigned tap_time = 200;
52 module_param(tap_time, uint, 0);
53 MODULE_PARM_DESC(tap_time, "Tap time for touchpads in absolute mode (msecs)");
54
55 struct mousedev_hw_data {
56 int dx, dy, dz;
57 int x, y;
58 int abs_event;
59 unsigned long buttons;
60 };
61
62 struct mousedev {
63 int exist;
64 int open;
65 int minor;
66 char name[16];
67 wait_queue_head_t wait;
68 struct list_head list;
69 struct input_handle handle;
70
71 struct mousedev_hw_data packet;
72 unsigned int pkt_count;
73 int old_x[4], old_y[4];
74 int frac_dx, frac_dy;
75 unsigned long touch;
76 };
77
78 enum mousedev_emul {
79 MOUSEDEV_EMUL_PS2,
80 MOUSEDEV_EMUL_IMPS,
81 MOUSEDEV_EMUL_EXPS
82 };
83
84 struct mousedev_motion {
85 int dx, dy, dz;
86 unsigned long buttons;
87 };
88
89 #define PACKET_QUEUE_LEN 16
90 struct mousedev_list {
91 struct fasync_struct *fasync;
92 struct mousedev *mousedev;
93 struct list_head node;
94
95 struct mousedev_motion packets[PACKET_QUEUE_LEN];
96 unsigned int head, tail;
97 spinlock_t packet_lock;
98 int pos_x, pos_y;
99
100 signed char ps2[6];
101 unsigned char ready, buffer, bufsiz;
102 unsigned char imexseq, impsseq;
103 enum mousedev_emul mode;
104 unsigned long last_buttons;
105 };
106
107 #define MOUSEDEV_SEQ_LEN 6
108
109 static unsigned char mousedev_imps_seq[] = { 0xf3, 200, 0xf3, 100, 0xf3, 80 };
110 static unsigned char mousedev_imex_seq[] = { 0xf3, 200, 0xf3, 200, 0xf3, 80 };
111
112 static struct input_handler mousedev_handler;
113
114 static struct mousedev *mousedev_table[MOUSEDEV_MINORS];
115 static struct mousedev mousedev_mix;
116
117 #define fx(i) (mousedev->old_x[(mousedev->pkt_count - (i)) & 03])
118 #define fy(i) (mousedev->old_y[(mousedev->pkt_count - (i)) & 03])
119
120 static void mousedev_touchpad_event(struct input_dev *dev, struct mousedev *mousedev, unsigned int code, int value)
121 {
122 int size, tmp;
123 enum { FRACTION_DENOM = 128 };
124
125 if (mousedev->touch) {
126 size = dev->absmax[ABS_X] - dev->absmin[ABS_X];
127 if (size == 0) size = 256 * 2;
128 switch (code) {
129 case ABS_X:
130 fx(0) = value;
131 if (mousedev->pkt_count >= 2) {
132 tmp = ((value - fx(2)) * (256 * FRACTION_DENOM)) / size;
133 tmp += mousedev->frac_dx;
134 mousedev->packet.dx = tmp / FRACTION_DENOM;
135 mousedev->frac_dx = tmp - mousedev->packet.dx * FRACTION_DENOM;
136 }
137 break;
138
139 case ABS_Y:
140 fy(0) = value;
141 if (mousedev->pkt_count >= 2) {
142 tmp = -((value - fy(2)) * (256 * FRACTION_DENOM)) / size;
143 tmp += mousedev->frac_dy;
144 mousedev->packet.dy = tmp / FRACTION_DENOM;
145 mousedev->frac_dy = tmp - mousedev->packet.dy * FRACTION_DENOM;
146 }
147 break;
148 }
149 }
150 }
151
152 static void mousedev_abs_event(struct input_dev *dev, struct mousedev *mousedev, unsigned int code, int value)
153 {
154 int size;
155
156 switch (code) {
157 case ABS_X:
158 size = dev->absmax[ABS_X] - dev->absmin[ABS_X];
159 if (size == 0) size = xres;
160 if (value > dev->absmax[ABS_X]) value = dev->absmax[ABS_X];
161 if (value < dev->absmin[ABS_X]) value = dev->absmin[ABS_X];
162 mousedev->packet.x = ((value - dev->absmin[ABS_X]) * xres) / size;
163 mousedev->packet.abs_event = 1;
164 break;
165
166 case ABS_Y:
167 size = dev->absmax[ABS_Y] - dev->absmin[ABS_Y];
168 if (size == 0) size = yres;
169 if (value > dev->absmax[ABS_Y]) value = dev->absmax[ABS_Y];
170 if (value < dev->absmin[ABS_Y]) value = dev->absmin[ABS_Y];
171 mousedev->packet.y = yres - ((value - dev->absmin[ABS_Y]) * yres) / size;
172 mousedev->packet.abs_event = 1;
173 break;
174 }
175 }
176
177 static void mousedev_rel_event(struct mousedev *mousedev, unsigned int code, int value)
178 {
179 switch (code) {
180 case REL_X: mousedev->packet.dx += value; break;
181 case REL_Y: mousedev->packet.dy -= value; break;
182 case REL_WHEEL: mousedev->packet.dz -= value; break;
183 }
184 }
185
186 static void mousedev_key_event(struct mousedev *mousedev, unsigned int code, int value)
187 {
188 int index;
189
190 switch (code) {
191 case BTN_TOUCH:
192 case BTN_0:
193 case BTN_FORWARD:
194 case BTN_LEFT: index = 0; break;
195 case BTN_STYLUS:
196 case BTN_1:
197 case BTN_RIGHT: index = 1; break;
198 case BTN_2:
199 case BTN_STYLUS2:
200 case BTN_MIDDLE: index = 2; break;
201 case BTN_3:
202 case BTN_BACK:
203 case BTN_SIDE: index = 3; break;
204 case BTN_4:
205 case BTN_EXTRA: index = 4; break;
206 default: return;
207 }
208
209 if (value) {
210 set_bit(index, &mousedev->packet.buttons);
211 set_bit(index, &mousedev_mix.packet.buttons);
212 } else {
213 clear_bit(index, &mousedev->packet.buttons);
214 clear_bit(index, &mousedev_mix.packet.buttons);
215 }
216 }
217
218 static void mousedev_notify_readers(struct mousedev *mousedev, struct mousedev_hw_data *packet)
219 {
220 struct mousedev_list *list;
221 struct mousedev_motion *p;
222 unsigned long flags;
223 int wake_readers = 0;
224
225 list_for_each_entry(list, &mousedev->list, node) {
226 spin_lock_irqsave(&list->packet_lock, flags);
227
228 p = &list->packets[list->head];
229 if (list->ready && p->buttons != mousedev->packet.buttons) {
230 unsigned int new_head = (list->head + 1) % PACKET_QUEUE_LEN;
231 if (new_head != list->tail) {
232 p = &list->packets[list->head = new_head];
233 memset(p, 0, sizeof(struct mousedev_motion));
234 }
235 }
236
237 if (packet->abs_event) {
238 p->dx += packet->x - list->pos_x;
239 p->dy += packet->y - list->pos_y;
240 list->pos_x = packet->x;
241 list->pos_y = packet->y;
242 }
243
244 list->pos_x += packet->dx;
245 list->pos_x = list->pos_x < 0 ? 0 : (list->pos_x >= xres ? xres : list->pos_x);
246 list->pos_y += packet->dy;
247 list->pos_y = list->pos_y < 0 ? 0 : (list->pos_y >= yres ? yres : list->pos_y);
248
249 p->dx += packet->dx;
250 p->dy += packet->dy;
251 p->dz += packet->dz;
252 p->buttons = mousedev->packet.buttons;
253
254 if (p->dx || p->dy || p->dz || p->buttons != list->last_buttons)
255 list->ready = 1;
256
257 spin_unlock_irqrestore(&list->packet_lock, flags);
258
259 if (list->ready) {
260 kill_fasync(&list->fasync, SIGIO, POLL_IN);
261 wake_readers = 1;
262 }
263 }
264
265 if (wake_readers)
266 wake_up_interruptible(&mousedev->wait);
267 }
268
269 static void mousedev_touchpad_touch(struct mousedev *mousedev, int value)
270 {
271 if (!value) {
272 if (mousedev->touch &&
273 time_before(jiffies, mousedev->touch + msecs_to_jiffies(tap_time))) {
274 /*
275 * Toggle left button to emulate tap.
276 * We rely on the fact that mousedev_mix always has 0
277 * motion packet so we won't mess current position.
278 */
279 set_bit(0, &mousedev->packet.buttons);
280 set_bit(0, &mousedev_mix.packet.buttons);
281 mousedev_notify_readers(mousedev, &mousedev_mix.packet);
282 mousedev_notify_readers(&mousedev_mix, &mousedev_mix.packet);
283 clear_bit(0, &mousedev->packet.buttons);
284 clear_bit(0, &mousedev_mix.packet.buttons);
285 }
286 mousedev->touch = mousedev->pkt_count = 0;
287 mousedev->frac_dx = 0;
288 mousedev->frac_dy = 0;
289 }
290 else
291 if (!mousedev->touch)
292 mousedev->touch = jiffies;
293 }
294
295 static void mousedev_event(struct input_handle *handle, unsigned int type, unsigned int code, int value)
296 {
297 struct mousedev *mousedev = handle->private;
298
299 switch (type) {
300 case EV_ABS:
301 /* Ignore joysticks */
302 if (test_bit(BTN_TRIGGER, handle->dev->keybit))
303 return;
304
305 if (test_bit(BTN_TOOL_FINGER, handle->dev->keybit))
306 mousedev_touchpad_event(handle->dev, mousedev, code, value);
307 else
308 mousedev_abs_event(handle->dev, mousedev, code, value);
309
310 break;
311
312 case EV_REL:
313 mousedev_rel_event(mousedev, code, value);
314 break;
315
316 case EV_KEY:
317 if (value != 2) {
318 if (code == BTN_TOUCH && test_bit(BTN_TOOL_FINGER, handle->dev->keybit))
319 mousedev_touchpad_touch(mousedev, value);
320 else
321 mousedev_key_event(mousedev, code, value);
322 }
323 break;
324
325 case EV_SYN:
326 if (code == SYN_REPORT) {
327 if (mousedev->touch) {
328 mousedev->pkt_count++;
329 /* Input system eats duplicate events, but we need all of them
330 * to do correct averaging so apply present one forward
331 */
332 fx(0) = fx(1);
333 fy(0) = fy(1);
334 }
335
336 mousedev_notify_readers(mousedev, &mousedev->packet);
337 mousedev_notify_readers(&mousedev_mix, &mousedev->packet);
338
339 mousedev->packet.dx = mousedev->packet.dy = mousedev->packet.dz = 0;
340 mousedev->packet.abs_event = 0;
341 }
342 break;
343 }
344 }
345
346 static int mousedev_fasync(int fd, struct file *file, int on)
347 {
348 int retval;
349 struct mousedev_list *list = file->private_data;
350 retval = fasync_helper(fd, file, on, &list->fasync);
351 return retval < 0 ? retval : 0;
352 }
353
354 static void mousedev_free(struct mousedev *mousedev)
355 {
356 mousedev_table[mousedev->minor] = NULL;
357 kfree(mousedev);
358 }
359
360 static int mixdev_release(void)
361 {
362 struct input_handle *handle;
363
364 list_for_each_entry(handle, &mousedev_handler.h_list, h_node) {
365 struct mousedev *mousedev = handle->private;
366
367 if (!mousedev->open) {
368 if (mousedev->exist)
369 input_close_device(&mousedev->handle);
370 else
371 mousedev_free(mousedev);
372 }
373 }
374
375 return 0;
376 }
377
378 static int mousedev_release(struct inode * inode, struct file * file)
379 {
380 struct mousedev_list *list = file->private_data;
381
382 mousedev_fasync(-1, file, 0);
383
384 list_del(&list->node);
385
386 if (!--list->mousedev->open) {
387 if (list->mousedev->minor == MOUSEDEV_MIX)
388 return mixdev_release();
389
390 if (!mousedev_mix.open) {
391 if (list->mousedev->exist)
392 input_close_device(&list->mousedev->handle);
393 else
394 mousedev_free(list->mousedev);
395 }
396 }
397
398 kfree(list);
399 return 0;
400 }
401
402 static int mousedev_open(struct inode * inode, struct file * file)
403 {
404 struct mousedev_list *list;
405 struct input_handle *handle;
406 struct mousedev *mousedev;
407 int i;
408
409 #ifdef CONFIG_INPUT_MOUSEDEV_PSAUX
410 if (imajor(inode) == MISC_MAJOR)
411 i = MOUSEDEV_MIX;
412 else
413 #endif
414 i = iminor(inode) - MOUSEDEV_MINOR_BASE;
415
416 if (i >= MOUSEDEV_MINORS || !mousedev_table[i])
417 return -ENODEV;
418
419 if (!(list = kmalloc(sizeof(struct mousedev_list), GFP_KERNEL)))
420 return -ENOMEM;
421 memset(list, 0, sizeof(struct mousedev_list));
422
423 spin_lock_init(&list->packet_lock);
424 list->pos_x = xres / 2;
425 list->pos_y = yres / 2;
426 list->mousedev = mousedev_table[i];
427 list_add_tail(&list->node, &mousedev_table[i]->list);
428 file->private_data = list;
429
430 if (!list->mousedev->open++) {
431 if (list->mousedev->minor == MOUSEDEV_MIX) {
432 list_for_each_entry(handle, &mousedev_handler.h_list, h_node) {
433 mousedev = handle->private;
434 if (!mousedev->open && mousedev->exist)
435 input_open_device(handle);
436 }
437 } else
438 if (!mousedev_mix.open && list->mousedev->exist)
439 input_open_device(&list->mousedev->handle);
440 }
441
442 return 0;
443 }
444
445 static inline int mousedev_limit_delta(int delta, int limit)
446 {
447 return delta > limit ? limit : (delta < -limit ? -limit : delta);
448 }
449
450 static void mousedev_packet(struct mousedev_list *list, signed char *ps2_data)
451 {
452 struct mousedev_motion *p;
453 unsigned long flags;
454
455 spin_lock_irqsave(&list->packet_lock, flags);
456 p = &list->packets[list->tail];
457
458 ps2_data[0] = 0x08 | ((p->dx < 0) << 4) | ((p->dy < 0) << 5) | (p->buttons & 0x07);
459 ps2_data[1] = mousedev_limit_delta(p->dx, 127);
460 ps2_data[2] = mousedev_limit_delta(p->dy, 127);
461 p->dx -= ps2_data[1];
462 p->dy -= ps2_data[2];
463
464 switch (list->mode) {
465 case MOUSEDEV_EMUL_EXPS:
466 ps2_data[3] = mousedev_limit_delta(p->dz, 7);
467 p->dz -= ps2_data[3];
468 ps2_data[3] = (ps2_data[3] & 0x0f) | ((p->buttons & 0x18) << 1);
469 list->bufsiz = 4;
470 break;
471
472 case MOUSEDEV_EMUL_IMPS:
473 ps2_data[0] |= ((p->buttons & 0x10) >> 3) | ((p->buttons & 0x08) >> 1);
474 ps2_data[3] = mousedev_limit_delta(p->dz, 127);
475 p->dz -= ps2_data[3];
476 list->bufsiz = 4;
477 break;
478
479 case MOUSEDEV_EMUL_PS2:
480 default:
481 ps2_data[0] |= ((p->buttons & 0x10) >> 3) | ((p->buttons & 0x08) >> 1);
482 p->dz = 0;
483 list->bufsiz = 3;
484 break;
485 }
486
487 if (!p->dx && !p->dy && !p->dz) {
488 if (list->tail == list->head) {
489 list->ready = 0;
490 list->last_buttons = p->buttons;
491 } else
492 list->tail = (list->tail + 1) % PACKET_QUEUE_LEN;
493 }
494
495 spin_unlock_irqrestore(&list->packet_lock, flags);
496 }
497
498
499 static ssize_t mousedev_write(struct file * file, const char __user * buffer, size_t count, loff_t *ppos)
500 {
501 struct mousedev_list *list = file->private_data;
502 unsigned char c;
503 unsigned int i;
504
505 for (i = 0; i < count; i++) {
506
507 if (get_user(c, buffer + i))
508 return -EFAULT;
509
510 if (c == mousedev_imex_seq[list->imexseq]) {
511 if (++list->imexseq == MOUSEDEV_SEQ_LEN) {
512 list->imexseq = 0;
513 list->mode = MOUSEDEV_EMUL_EXPS;
514 }
515 } else list->imexseq = 0;
516
517 if (c == mousedev_imps_seq[list->impsseq]) {
518 if (++list->impsseq == MOUSEDEV_SEQ_LEN) {
519 list->impsseq = 0;
520 list->mode = MOUSEDEV_EMUL_IMPS;
521 }
522 } else list->impsseq = 0;
523
524 list->ps2[0] = 0xfa;
525
526 switch (c) {
527
528 case 0xeb: /* Poll */
529 mousedev_packet(list, &list->ps2[1]);
530 list->bufsiz++; /* account for leading ACK */
531 break;
532
533 case 0xf2: /* Get ID */
534 switch (list->mode) {
535 case MOUSEDEV_EMUL_PS2: list->ps2[1] = 0; break;
536 case MOUSEDEV_EMUL_IMPS: list->ps2[1] = 3; break;
537 case MOUSEDEV_EMUL_EXPS: list->ps2[1] = 4; break;
538 }
539 list->bufsiz = 2;
540 break;
541
542 case 0xe9: /* Get info */
543 list->ps2[1] = 0x60; list->ps2[2] = 3; list->ps2[3] = 200;
544 list->bufsiz = 4;
545 break;
546
547 case 0xff: /* Reset */
548 list->impsseq = list->imexseq = 0;
549 list->mode = MOUSEDEV_EMUL_PS2;
550 list->ps2[1] = 0xaa; list->ps2[2] = 0x00;
551 list->bufsiz = 3;
552 break;
553
554 default:
555 list->bufsiz = 1;
556 break;
557 }
558
559 list->buffer = list->bufsiz;
560 }
561
562 kill_fasync(&list->fasync, SIGIO, POLL_IN);
563
564 wake_up_interruptible(&list->mousedev->wait);
565
566 return count;
567 }
568
569 static ssize_t mousedev_read(struct file * file, char __user * buffer, size_t count, loff_t *ppos)
570 {
571 struct mousedev_list *list = file->private_data;
572 int retval = 0;
573
574 if (!list->ready && !list->buffer && (file->f_flags & O_NONBLOCK))
575 return -EAGAIN;
576
577 retval = wait_event_interruptible(list->mousedev->wait,
578 !list->mousedev->exist || list->ready || list->buffer);
579
580 if (retval)
581 return retval;
582
583 if (!list->mousedev->exist)
584 return -ENODEV;
585
586 if (!list->buffer && list->ready) {
587 mousedev_packet(list, list->ps2);
588 list->buffer = list->bufsiz;
589 }
590
591 if (count > list->buffer)
592 count = list->buffer;
593
594 list->buffer -= count;
595
596 if (copy_to_user(buffer, list->ps2 + list->bufsiz - list->buffer - count, count))
597 return -EFAULT;
598
599 return count;
600 }
601
602 /* No kernel lock - fine */
603 static unsigned int mousedev_poll(struct file *file, poll_table *wait)
604 {
605 struct mousedev_list *list = file->private_data;
606 poll_wait(file, &list->mousedev->wait, wait);
607 return ((list->ready || list->buffer) ? (POLLIN | POLLRDNORM) : 0) |
608 (list->mousedev->exist ? 0 : (POLLHUP | POLLERR));
609 }
610
611 static struct file_operations mousedev_fops = {
612 .owner = THIS_MODULE,
613 .read = mousedev_read,
614 .write = mousedev_write,
615 .poll = mousedev_poll,
616 .open = mousedev_open,
617 .release = mousedev_release,
618 .fasync = mousedev_fasync,
619 };
620
621 static struct input_handle *mousedev_connect(struct input_handler *handler, struct input_dev *dev, struct input_device_id *id)
622 {
623 struct mousedev *mousedev;
624 int minor = 0;
625
626 for (minor = 0; minor < MOUSEDEV_MINORS && mousedev_table[minor]; minor++);
627 if (minor == MOUSEDEV_MINORS) {
628 printk(KERN_ERR "mousedev: no more free mousedev devices\n");
629 return NULL;
630 }
631
632 if (!(mousedev = kmalloc(sizeof(struct mousedev), GFP_KERNEL)))
633 return NULL;
634 memset(mousedev, 0, sizeof(struct mousedev));
635
636 INIT_LIST_HEAD(&mousedev->list);
637 init_waitqueue_head(&mousedev->wait);
638
639 mousedev->minor = minor;
640 mousedev->exist = 1;
641 mousedev->handle.dev = dev;
642 mousedev->handle.name = mousedev->name;
643 mousedev->handle.handler = handler;
644 mousedev->handle.private = mousedev;
645 sprintf(mousedev->name, "mouse%d", minor);
646
647 if (mousedev_mix.open)
648 input_open_device(&mousedev->handle);
649
650 mousedev_table[minor] = mousedev;
651
652 devfs_mk_cdev(MKDEV(INPUT_MAJOR, MOUSEDEV_MINOR_BASE + minor),
653 S_IFCHR|S_IRUGO|S_IWUSR, "input/mouse%d", minor);
654 class_device_create(input_class,
655 MKDEV(INPUT_MAJOR, MOUSEDEV_MINOR_BASE + minor),
656 dev->dev, "mouse%d", minor);
657
658 return &mousedev->handle;
659 }
660
661 static void mousedev_disconnect(struct input_handle *handle)
662 {
663 struct mousedev *mousedev = handle->private;
664 struct mousedev_list *list;
665
666 class_device_destroy(input_class,
667 MKDEV(INPUT_MAJOR, MOUSEDEV_MINOR_BASE + mousedev->minor));
668 devfs_remove("input/mouse%d", mousedev->minor);
669 mousedev->exist = 0;
670
671 if (mousedev->open) {
672 input_close_device(handle);
673 wake_up_interruptible(&mousedev->wait);
674 list_for_each_entry(list, &mousedev->list, node)
675 kill_fasync(&list->fasync, SIGIO, POLL_HUP);
676 } else {
677 if (mousedev_mix.open)
678 input_close_device(handle);
679 mousedev_free(mousedev);
680 }
681 }
682
683 static struct input_device_id mousedev_ids[] = {
684 {
685 .flags = INPUT_DEVICE_ID_MATCH_EVBIT | INPUT_DEVICE_ID_MATCH_KEYBIT | INPUT_DEVICE_ID_MATCH_RELBIT,
686 .evbit = { BIT(EV_KEY) | BIT(EV_REL) },
687 .keybit = { [LONG(BTN_LEFT)] = BIT(BTN_LEFT) },
688 .relbit = { BIT(REL_X) | BIT(REL_Y) },
689 }, /* A mouse like device, at least one button, two relative axes */
690 {
691 .flags = INPUT_DEVICE_ID_MATCH_EVBIT | INPUT_DEVICE_ID_MATCH_RELBIT,
692 .evbit = { BIT(EV_KEY) | BIT(EV_REL) },
693 .relbit = { BIT(REL_WHEEL) },
694 }, /* A separate scrollwheel */
695 {
696 .flags = INPUT_DEVICE_ID_MATCH_EVBIT | INPUT_DEVICE_ID_MATCH_KEYBIT | INPUT_DEVICE_ID_MATCH_ABSBIT,
697 .evbit = { BIT(EV_KEY) | BIT(EV_ABS) },
698 .keybit = { [LONG(BTN_TOUCH)] = BIT(BTN_TOUCH) },
699 .absbit = { BIT(ABS_X) | BIT(ABS_Y) },
700 }, /* A tablet like device, at least touch detection, two absolute axes */
701 {
702 .flags = INPUT_DEVICE_ID_MATCH_EVBIT | INPUT_DEVICE_ID_MATCH_KEYBIT | INPUT_DEVICE_ID_MATCH_ABSBIT,
703 .evbit = { BIT(EV_KEY) | BIT(EV_ABS) },
704 .keybit = { [LONG(BTN_TOOL_FINGER)] = BIT(BTN_TOOL_FINGER) },
705 .absbit = { BIT(ABS_X) | BIT(ABS_Y) | BIT(ABS_PRESSURE) | BIT(ABS_TOOL_WIDTH) },
706 }, /* A touchpad */
707
708 { }, /* Terminating entry */
709 };
710
711 MODULE_DEVICE_TABLE(input, mousedev_ids);
712
713 static struct input_handler mousedev_handler = {
714 .event = mousedev_event,
715 .connect = mousedev_connect,
716 .disconnect = mousedev_disconnect,
717 .fops = &mousedev_fops,
718 .minor = MOUSEDEV_MINOR_BASE,
719 .name = "mousedev",
720 .id_table = mousedev_ids,
721 };
722
723 #ifdef CONFIG_INPUT_MOUSEDEV_PSAUX
724 static struct miscdevice psaux_mouse = {
725 PSMOUSE_MINOR, "psaux", &mousedev_fops
726 };
727 static int psaux_registered;
728 #endif
729
730 static int __init mousedev_init(void)
731 {
732 input_register_handler(&mousedev_handler);
733
734 memset(&mousedev_mix, 0, sizeof(struct mousedev));
735 INIT_LIST_HEAD(&mousedev_mix.list);
736 init_waitqueue_head(&mousedev_mix.wait);
737 mousedev_table[MOUSEDEV_MIX] = &mousedev_mix;
738 mousedev_mix.exist = 1;
739 mousedev_mix.minor = MOUSEDEV_MIX;
740
741 devfs_mk_cdev(MKDEV(INPUT_MAJOR, MOUSEDEV_MINOR_BASE + MOUSEDEV_MIX),
742 S_IFCHR|S_IRUGO|S_IWUSR, "input/mice");
743 class_device_create(input_class,
744 MKDEV(INPUT_MAJOR, MOUSEDEV_MINOR_BASE + MOUSEDEV_MIX), NULL, "mice");
745
746 #ifdef CONFIG_INPUT_MOUSEDEV_PSAUX
747 if (!(psaux_registered = !misc_register(&psaux_mouse)))
748 printk(KERN_WARNING "mice: could not misc_register the device\n");
749 #endif
750
751 printk(KERN_INFO "mice: PS/2 mouse device common for all mice\n");
752
753 return 0;
754 }
755
756 static void __exit mousedev_exit(void)
757 {
758 #ifdef CONFIG_INPUT_MOUSEDEV_PSAUX
759 if (psaux_registered)
760 misc_deregister(&psaux_mouse);
761 #endif
762 devfs_remove("input/mice");
763 class_device_destroy(input_class,
764 MKDEV(INPUT_MAJOR, MOUSEDEV_MINOR_BASE + MOUSEDEV_MIX));
765 input_unregister_handler(&mousedev_handler);
766 }
767
768 module_init(mousedev_init);
769 module_exit(mousedev_exit);
SocketAccessConTroL development