blob: 20e2972b9204f25fd5e60d9c051271f0a32acfb8 [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
2 * Joystick device driver for the input driver suite.
3 *
4 * Copyright (c) 1999-2002 Vojtech Pavlik
5 * Copyright (c) 1999 Colin Van Dyke
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 as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
11 */
12
13#include <asm/io.h>
14#include <asm/system.h>
15#include <linux/delay.h>
16#include <linux/errno.h>
17#include <linux/joystick.h>
18#include <linux/input.h>
19#include <linux/kernel.h>
20#include <linux/major.h>
21#include <linux/slab.h>
22#include <linux/mm.h>
23#include <linux/miscdevice.h>
24#include <linux/module.h>
25#include <linux/poll.h>
26#include <linux/init.h>
27#include <linux/smp_lock.h>
28#include <linux/device.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070029
30MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>");
31MODULE_DESCRIPTION("Joystick device interfaces");
32MODULE_SUPPORTED_DEVICE("input/js");
33MODULE_LICENSE("GPL");
34
35#define JOYDEV_MINOR_BASE 0
36#define JOYDEV_MINORS 16
37#define JOYDEV_BUFFER_SIZE 64
38
Linus Torvalds1da177e2005-04-16 15:20:36 -070039struct joydev {
40 int exist;
41 int open;
42 int minor;
43 char name[16];
44 struct input_handle handle;
45 wait_queue_head_t wait;
46 struct list_head list;
47 struct js_corr corr[ABS_MAX + 1];
48 struct JS_DATA_SAVE_TYPE glue;
49 int nabs;
50 int nkey;
51 __u16 keymap[KEY_MAX - BTN_MISC + 1];
52 __u16 keypam[KEY_MAX - BTN_MISC + 1];
53 __u8 absmap[ABS_MAX + 1];
54 __u8 abspam[ABS_MAX + 1];
55 __s16 abs[ABS_MAX + 1];
56};
57
58struct joydev_list {
59 struct js_event buffer[JOYDEV_BUFFER_SIZE];
60 int head;
61 int tail;
62 int startup;
63 struct fasync_struct *fasync;
64 struct joydev *joydev;
65 struct list_head node;
66};
67
68static struct joydev *joydev_table[JOYDEV_MINORS];
69
70static int joydev_correct(int value, struct js_corr *corr)
71{
72 switch (corr->type) {
73 case JS_CORR_NONE:
74 break;
75 case JS_CORR_BROKEN:
76 value = value > corr->coef[0] ? (value < corr->coef[1] ? 0 :
77 ((corr->coef[3] * (value - corr->coef[1])) >> 14)) :
78 ((corr->coef[2] * (value - corr->coef[0])) >> 14);
79 break;
80 default:
81 return 0;
82 }
83
84 if (value < -32767) return -32767;
85 if (value > 32767) return 32767;
86
87 return value;
88}
89
90static void joydev_event(struct input_handle *handle, unsigned int type, unsigned int code, int value)
91{
92 struct joydev *joydev = handle->private;
93 struct joydev_list *list;
94 struct js_event event;
95
96 switch (type) {
97
98 case EV_KEY:
99 if (code < BTN_MISC || value == 2) return;
100 event.type = JS_EVENT_BUTTON;
101 event.number = joydev->keymap[code - BTN_MISC];
102 event.value = value;
103 break;
104
105 case EV_ABS:
106 event.type = JS_EVENT_AXIS;
107 event.number = joydev->absmap[code];
108 event.value = joydev_correct(value, joydev->corr + event.number);
109 if (event.value == joydev->abs[event.number]) return;
110 joydev->abs[event.number] = event.value;
111 break;
112
113 default:
114 return;
115 }
116
Tobias Klauser6f5eacf2005-07-11 01:08:56 -0500117 event.time = jiffies_to_msecs(jiffies);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700118
119 list_for_each_entry(list, &joydev->list, node) {
120
121 memcpy(list->buffer + list->head, &event, sizeof(struct js_event));
122
123 if (list->startup == joydev->nabs + joydev->nkey)
124 if (list->tail == (list->head = (list->head + 1) & (JOYDEV_BUFFER_SIZE - 1)))
125 list->startup = 0;
126
127 kill_fasync(&list->fasync, SIGIO, POLL_IN);
128 }
129
130 wake_up_interruptible(&joydev->wait);
131}
132
133static int joydev_fasync(int fd, struct file *file, int on)
134{
135 int retval;
136 struct joydev_list *list = file->private_data;
137 retval = fasync_helper(fd, file, on, &list->fasync);
138 return retval < 0 ? retval : 0;
139}
140
141static void joydev_free(struct joydev *joydev)
142{
143 joydev_table[joydev->minor] = NULL;
144 kfree(joydev);
145}
146
147static int joydev_release(struct inode * inode, struct file * file)
148{
149 struct joydev_list *list = file->private_data;
150
151 joydev_fasync(-1, file, 0);
152
153 list_del(&list->node);
154
155 if (!--list->joydev->open) {
156 if (list->joydev->exist)
157 input_close_device(&list->joydev->handle);
158 else
159 joydev_free(list->joydev);
160 }
161
162 kfree(list);
163 return 0;
164}
165
166static int joydev_open(struct inode *inode, struct file *file)
167{
168 struct joydev_list *list;
169 int i = iminor(inode) - JOYDEV_MINOR_BASE;
170
171 if (i >= JOYDEV_MINORS || !joydev_table[i])
172 return -ENODEV;
173
174 if (!(list = kmalloc(sizeof(struct joydev_list), GFP_KERNEL)))
175 return -ENOMEM;
176 memset(list, 0, sizeof(struct joydev_list));
177
178 list->joydev = joydev_table[i];
179 list_add_tail(&list->node, &joydev_table[i]->list);
180 file->private_data = list;
181
182 if (!list->joydev->open++)
183 if (list->joydev->exist)
184 input_open_device(&list->joydev->handle);
185
186 return 0;
187}
188
189static ssize_t joydev_write(struct file * file, const char __user * buffer, size_t count, loff_t *ppos)
190{
191 return -EINVAL;
192}
193
194static ssize_t joydev_read(struct file *file, char __user *buf, size_t count, loff_t *ppos)
195{
196 struct joydev_list *list = file->private_data;
197 struct joydev *joydev = list->joydev;
198 struct input_dev *input = joydev->handle.dev;
199 int retval = 0;
200
201 if (!list->joydev->exist)
202 return -ENODEV;
203
204 if (count < sizeof(struct js_event))
205 return -EINVAL;
206
207 if (count == sizeof(struct JS_DATA_TYPE)) {
208
209 struct JS_DATA_TYPE data;
210 int i;
211
212 for (data.buttons = i = 0; i < 32 && i < joydev->nkey; i++)
213 data.buttons |= test_bit(joydev->keypam[i], input->key) ? (1 << i) : 0;
214 data.x = (joydev->abs[0] / 256 + 128) >> joydev->glue.JS_CORR.x;
215 data.y = (joydev->abs[1] / 256 + 128) >> joydev->glue.JS_CORR.y;
216
217 if (copy_to_user(buf, &data, sizeof(struct JS_DATA_TYPE)))
218 return -EFAULT;
219
220 list->startup = 0;
221 list->tail = list->head;
222
223 return sizeof(struct JS_DATA_TYPE);
224 }
225
226 if (list->startup == joydev->nabs + joydev->nkey
227 && list->head == list->tail && (file->f_flags & O_NONBLOCK))
228 return -EAGAIN;
229
230 retval = wait_event_interruptible(list->joydev->wait,
231 !list->joydev->exist ||
232 list->startup < joydev->nabs + joydev->nkey ||
233 list->head != list->tail);
234
235 if (retval)
236 return retval;
237
238 if (!list->joydev->exist)
239 return -ENODEV;
240
241 while (list->startup < joydev->nabs + joydev->nkey && retval + sizeof(struct js_event) <= count) {
242
243 struct js_event event;
244
Tobias Klauser6f5eacf2005-07-11 01:08:56 -0500245 event.time = jiffies_to_msecs(jiffies);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700246
247 if (list->startup < joydev->nkey) {
248 event.type = JS_EVENT_BUTTON | JS_EVENT_INIT;
249 event.number = list->startup;
250 event.value = !!test_bit(joydev->keypam[event.number], input->key);
251 } else {
252 event.type = JS_EVENT_AXIS | JS_EVENT_INIT;
253 event.number = list->startup - joydev->nkey;
254 event.value = joydev->abs[event.number];
255 }
256
257 if (copy_to_user(buf + retval, &event, sizeof(struct js_event)))
258 return -EFAULT;
259
260 list->startup++;
261 retval += sizeof(struct js_event);
262 }
263
264 while (list->head != list->tail && retval + sizeof(struct js_event) <= count) {
265
266 if (copy_to_user(buf + retval, list->buffer + list->tail, sizeof(struct js_event)))
267 return -EFAULT;
268
269 list->tail = (list->tail + 1) & (JOYDEV_BUFFER_SIZE - 1);
270 retval += sizeof(struct js_event);
271 }
272
273 return retval;
274}
275
276/* No kernel lock - fine */
277static unsigned int joydev_poll(struct file *file, poll_table *wait)
278{
279 struct joydev_list *list = file->private_data;
280 poll_wait(file, &list->joydev->wait, wait);
281 return ((list->head != list->tail || list->startup < list->joydev->nabs + list->joydev->nkey) ?
282 (POLLIN | POLLRDNORM) : 0) | (list->joydev->exist ? 0 : (POLLHUP | POLLERR));
283}
284
Jeremy Fitzhardinge024ac442005-05-29 02:26:31 -0500285static int joydev_ioctl_common(struct joydev *joydev, unsigned int cmd, void __user *argp)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700286{
Linus Torvalds1da177e2005-04-16 15:20:36 -0700287 struct input_dev *dev = joydev->handle.dev;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700288 int i, j;
289
Linus Torvalds1da177e2005-04-16 15:20:36 -0700290 switch (cmd) {
291
292 case JS_SET_CAL:
293 return copy_from_user(&joydev->glue.JS_CORR, argp,
Jeremy Fitzhardinge024ac442005-05-29 02:26:31 -0500294 sizeof(joydev->glue.JS_CORR)) ? -EFAULT : 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700295 case JS_GET_CAL:
296 return copy_to_user(argp, &joydev->glue.JS_CORR,
Jeremy Fitzhardinge024ac442005-05-29 02:26:31 -0500297 sizeof(joydev->glue.JS_CORR)) ? -EFAULT : 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700298 case JS_SET_TIMEOUT:
Jeremy Fitzhardinge024ac442005-05-29 02:26:31 -0500299 return get_user(joydev->glue.JS_TIMEOUT, (s32 __user *) argp);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700300 case JS_GET_TIMEOUT:
Jeremy Fitzhardinge024ac442005-05-29 02:26:31 -0500301 return put_user(joydev->glue.JS_TIMEOUT, (s32 __user *) argp);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700302
303 case JSIOCGVERSION:
Jeremy Fitzhardinge024ac442005-05-29 02:26:31 -0500304 return put_user(JS_VERSION, (__u32 __user *) argp);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700305 case JSIOCGAXES:
Jeremy Fitzhardinge024ac442005-05-29 02:26:31 -0500306 return put_user(joydev->nabs, (__u8 __user *) argp);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700307 case JSIOCGBUTTONS:
Jeremy Fitzhardinge024ac442005-05-29 02:26:31 -0500308 return put_user(joydev->nkey, (__u8 __user *) argp);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700309 case JSIOCSCORR:
310 if (copy_from_user(joydev->corr, argp,
Jeremy Fitzhardinge024ac442005-05-29 02:26:31 -0500311 sizeof(joydev->corr[0]) * joydev->nabs))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700312 return -EFAULT;
313 for (i = 0; i < joydev->nabs; i++) {
314 j = joydev->abspam[i];
315 joydev->abs[i] = joydev_correct(dev->abs[j], joydev->corr + i);
316 }
317 return 0;
318 case JSIOCGCORR:
319 return copy_to_user(argp, joydev->corr,
Jeremy Fitzhardinge024ac442005-05-29 02:26:31 -0500320 sizeof(joydev->corr[0]) * joydev->nabs) ? -EFAULT : 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700321 case JSIOCSAXMAP:
322 if (copy_from_user(joydev->abspam, argp, sizeof(__u8) * (ABS_MAX + 1)))
323 return -EFAULT;
324 for (i = 0; i < joydev->nabs; i++) {
325 if (joydev->abspam[i] > ABS_MAX) return -EINVAL;
326 joydev->absmap[joydev->abspam[i]] = i;
327 }
328 return 0;
329 case JSIOCGAXMAP:
330 return copy_to_user(argp, joydev->abspam,
331 sizeof(__u8) * (ABS_MAX + 1)) ? -EFAULT : 0;
332 case JSIOCSBTNMAP:
333 if (copy_from_user(joydev->keypam, argp, sizeof(__u16) * (KEY_MAX - BTN_MISC + 1)))
334 return -EFAULT;
335 for (i = 0; i < joydev->nkey; i++) {
336 if (joydev->keypam[i] > KEY_MAX || joydev->keypam[i] < BTN_MISC) return -EINVAL;
337 joydev->keymap[joydev->keypam[i] - BTN_MISC] = i;
338 }
339 return 0;
340 case JSIOCGBTNMAP:
341 return copy_to_user(argp, joydev->keypam,
342 sizeof(__u16) * (KEY_MAX - BTN_MISC + 1)) ? -EFAULT : 0;
343 default:
344 if ((cmd & ~(_IOC_SIZEMASK << _IOC_SIZESHIFT)) == JSIOCGNAME(0)) {
345 int len;
346 if (!dev->name) return 0;
347 len = strlen(dev->name) + 1;
348 if (len > _IOC_SIZE(cmd)) len = _IOC_SIZE(cmd);
349 if (copy_to_user(argp, dev->name, len)) return -EFAULT;
350 return len;
351 }
352 }
353 return -EINVAL;
354}
355
Jeremy Fitzhardinge024ac442005-05-29 02:26:31 -0500356#ifdef CONFIG_COMPAT
357static long joydev_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
358{
359 struct joydev_list *list = file->private_data;
360 struct joydev *joydev = list->joydev;
361 void __user *argp = (void __user *)arg;
362 s32 tmp32;
363 struct JS_DATA_SAVE_TYPE_32 ds32;
364 int err;
365
366 if (!joydev->exist) return -ENODEV;
367 switch(cmd) {
368 case JS_SET_TIMELIMIT:
369 err = get_user(tmp32, (s32 __user *) arg);
370 if (err == 0)
371 joydev->glue.JS_TIMELIMIT = tmp32;
372 break;
373 case JS_GET_TIMELIMIT:
374 tmp32 = joydev->glue.JS_TIMELIMIT;
375 err = put_user(tmp32, (s32 __user *) arg);
376 break;
377
378 case JS_SET_ALL:
379 err = copy_from_user(&ds32, argp,
380 sizeof(ds32)) ? -EFAULT : 0;
381 if (err == 0) {
382 joydev->glue.JS_TIMEOUT = ds32.JS_TIMEOUT;
383 joydev->glue.BUSY = ds32.BUSY;
384 joydev->glue.JS_EXPIRETIME = ds32.JS_EXPIRETIME;
385 joydev->glue.JS_TIMELIMIT = ds32.JS_TIMELIMIT;
386 joydev->glue.JS_SAVE = ds32.JS_SAVE;
387 joydev->glue.JS_CORR = ds32.JS_CORR;
388 }
389 break;
390
391 case JS_GET_ALL:
392 ds32.JS_TIMEOUT = joydev->glue.JS_TIMEOUT;
393 ds32.BUSY = joydev->glue.BUSY;
394 ds32.JS_EXPIRETIME = joydev->glue.JS_EXPIRETIME;
395 ds32.JS_TIMELIMIT = joydev->glue.JS_TIMELIMIT;
396 ds32.JS_SAVE = joydev->glue.JS_SAVE;
397 ds32.JS_CORR = joydev->glue.JS_CORR;
398
399 err = copy_to_user(argp, &ds32,
400 sizeof(ds32)) ? -EFAULT : 0;
401 break;
402
403 default:
404 err = joydev_ioctl_common(joydev, cmd, argp);
405 }
406 return err;
407}
408#endif /* CONFIG_COMPAT */
409
410static int joydev_ioctl(struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg)
411{
412 struct joydev_list *list = file->private_data;
413 struct joydev *joydev = list->joydev;
414 void __user *argp = (void __user *)arg;
415
416 if (!joydev->exist) return -ENODEV;
417
418 switch(cmd) {
419 case JS_SET_TIMELIMIT:
420 return get_user(joydev->glue.JS_TIMELIMIT, (long __user *) arg);
421 case JS_GET_TIMELIMIT:
422 return put_user(joydev->glue.JS_TIMELIMIT, (long __user *) arg);
423 case JS_SET_ALL:
424 return copy_from_user(&joydev->glue, argp,
425 sizeof(joydev->glue)) ? -EFAULT : 0;
426 case JS_GET_ALL:
427 return copy_to_user(argp, &joydev->glue,
428 sizeof(joydev->glue)) ? -EFAULT : 0;
429 default:
430 return joydev_ioctl_common(joydev, cmd, argp);
431 }
432}
433
Linus Torvalds1da177e2005-04-16 15:20:36 -0700434static struct file_operations joydev_fops = {
435 .owner = THIS_MODULE,
436 .read = joydev_read,
437 .write = joydev_write,
438 .poll = joydev_poll,
439 .open = joydev_open,
440 .release = joydev_release,
441 .ioctl = joydev_ioctl,
Jeremy Fitzhardinge024ac442005-05-29 02:26:31 -0500442#ifdef CONFIG_COMPAT
443 .compat_ioctl = joydev_compat_ioctl,
444#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -0700445 .fasync = joydev_fasync,
446};
447
448static struct input_handle *joydev_connect(struct input_handler *handler, struct input_dev *dev, struct input_device_id *id)
449{
450 struct joydev *joydev;
Greg Kroah-Hartmanc9bcd582005-10-27 22:25:43 -0700451 struct class_device *cdev;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700452 int i, j, t, minor;
453
454 for (minor = 0; minor < JOYDEV_MINORS && joydev_table[minor]; minor++);
455 if (minor == JOYDEV_MINORS) {
456 printk(KERN_ERR "joydev: no more free joydev devices\n");
457 return NULL;
458 }
459
460 if (!(joydev = kmalloc(sizeof(struct joydev), GFP_KERNEL)))
461 return NULL;
462 memset(joydev, 0, sizeof(struct joydev));
463
464 INIT_LIST_HEAD(&joydev->list);
465 init_waitqueue_head(&joydev->wait);
466
467 joydev->minor = minor;
468 joydev->exist = 1;
469 joydev->handle.dev = dev;
470 joydev->handle.name = joydev->name;
471 joydev->handle.handler = handler;
472 joydev->handle.private = joydev;
473 sprintf(joydev->name, "js%d", minor);
474
475 for (i = 0; i < ABS_MAX + 1; i++)
476 if (test_bit(i, dev->absbit)) {
477 joydev->absmap[i] = joydev->nabs;
478 joydev->abspam[joydev->nabs] = i;
479 joydev->nabs++;
480 }
481
482 for (i = BTN_JOYSTICK - BTN_MISC; i < KEY_MAX - BTN_MISC + 1; i++)
483 if (test_bit(i + BTN_MISC, dev->keybit)) {
484 joydev->keymap[i] = joydev->nkey;
485 joydev->keypam[joydev->nkey] = i + BTN_MISC;
486 joydev->nkey++;
487 }
488
Vojtech Pavlikf24949e2005-05-28 02:11:49 -0500489 for (i = 0; i < BTN_JOYSTICK - BTN_MISC; i++)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700490 if (test_bit(i + BTN_MISC, dev->keybit)) {
491 joydev->keymap[i] = joydev->nkey;
492 joydev->keypam[joydev->nkey] = i + BTN_MISC;
493 joydev->nkey++;
494 }
495
496 for (i = 0; i < joydev->nabs; i++) {
497 j = joydev->abspam[i];
498 if (dev->absmax[j] == dev->absmin[j]) {
499 joydev->corr[i].type = JS_CORR_NONE;
500 joydev->abs[i] = dev->abs[j];
501 continue;
502 }
503 joydev->corr[i].type = JS_CORR_BROKEN;
504 joydev->corr[i].prec = dev->absfuzz[j];
505 joydev->corr[i].coef[0] = (dev->absmax[j] + dev->absmin[j]) / 2 - dev->absflat[j];
506 joydev->corr[i].coef[1] = (dev->absmax[j] + dev->absmin[j]) / 2 + dev->absflat[j];
507 if (!(t = ((dev->absmax[j] - dev->absmin[j]) / 2 - 2 * dev->absflat[j])))
508 continue;
509 joydev->corr[i].coef[2] = (1 << 29) / t;
510 joydev->corr[i].coef[3] = (1 << 29) / t;
511
512 joydev->abs[i] = joydev_correct(dev->abs[j], joydev->corr + i);
513 }
514
515 joydev_table[minor] = joydev;
516
Greg Kroah-Hartmanc9bcd582005-10-27 22:25:43 -0700517 cdev = class_device_create(&input_class, &dev->cdev,
gregkh@suse.de12356862005-03-15 14:26:30 -0800518 MKDEV(INPUT_MAJOR, JOYDEV_MINOR_BASE + minor),
Greg Kroah-Hartmanc9bcd582005-10-27 22:25:43 -0700519 dev->cdev.dev, joydev->name);
520
521 /* temporary symlink to keep userspace happy */
522 sysfs_create_link(&input_class.subsys.kset.kobj, &cdev->kobj,
523 joydev->name);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700524
525 return &joydev->handle;
526}
527
528static void joydev_disconnect(struct input_handle *handle)
529{
530 struct joydev *joydev = handle->private;
531 struct joydev_list *list;
532
Greg Kroah-Hartmanc9bcd582005-10-27 22:25:43 -0700533 sysfs_remove_link(&input_class.subsys.kset.kobj, joydev->name);
Greg Kroah-Hartmanea9f2402005-10-27 22:25:43 -0700534 class_device_destroy(&input_class, MKDEV(INPUT_MAJOR, JOYDEV_MINOR_BASE + joydev->minor));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700535 joydev->exist = 0;
536
537 if (joydev->open) {
538 input_close_device(handle);
539 wake_up_interruptible(&joydev->wait);
540 list_for_each_entry(list, &joydev->list, node)
541 kill_fasync(&list->fasync, SIGIO, POLL_HUP);
542 } else
543 joydev_free(joydev);
544}
545
546static struct input_device_id joydev_blacklist[] = {
547 {
548 .flags = INPUT_DEVICE_ID_MATCH_EVBIT | INPUT_DEVICE_ID_MATCH_KEYBIT,
549 .evbit = { BIT(EV_KEY) },
550 .keybit = { [LONG(BTN_TOUCH)] = BIT(BTN_TOUCH) },
551 }, /* Avoid itouchpads, touchscreens and tablets */
552 { }, /* Terminating entry */
553};
554
555static struct input_device_id joydev_ids[] = {
556 {
557 .flags = INPUT_DEVICE_ID_MATCH_EVBIT | INPUT_DEVICE_ID_MATCH_ABSBIT,
558 .evbit = { BIT(EV_ABS) },
559 .absbit = { BIT(ABS_X) },
560 },
561 {
562 .flags = INPUT_DEVICE_ID_MATCH_EVBIT | INPUT_DEVICE_ID_MATCH_ABSBIT,
563 .evbit = { BIT(EV_ABS) },
564 .absbit = { BIT(ABS_WHEEL) },
565 },
566 {
567 .flags = INPUT_DEVICE_ID_MATCH_EVBIT | INPUT_DEVICE_ID_MATCH_ABSBIT,
568 .evbit = { BIT(EV_ABS) },
569 .absbit = { BIT(ABS_THROTTLE) },
570 },
571 { }, /* Terminating entry */
572};
573
574MODULE_DEVICE_TABLE(input, joydev_ids);
575
576static struct input_handler joydev_handler = {
577 .event = joydev_event,
578 .connect = joydev_connect,
579 .disconnect = joydev_disconnect,
580 .fops = &joydev_fops,
581 .minor = JOYDEV_MINOR_BASE,
582 .name = "joydev",
583 .id_table = joydev_ids,
584 .blacklist = joydev_blacklist,
585};
586
587static int __init joydev_init(void)
588{
589 input_register_handler(&joydev_handler);
590 return 0;
591}
592
593static void __exit joydev_exit(void)
594{
595 input_unregister_handler(&joydev_handler);
596}
597
598module_init(joydev_init);
599module_exit(joydev_exit);