blob: b1bd6dd322864d0bd04c2f9a48c9f80b3217dcce [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>
Alexey Dobriyana99bbaf2009-10-04 16:11:37 +040021#include <linux/sched.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070022#include <linux/slab.h>
23#include <linux/mm.h>
24#include <linux/miscdevice.h>
25#include <linux/module.h>
26#include <linux/poll.h>
27#include <linux/init.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070028#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;
Linus Torvalds1da177e2005-04-16 15:20:36 -070043 struct input_handle handle;
44 wait_queue_head_t wait;
Dmitry Torokhovd0ffb9b2007-04-12 01:30:00 -040045 struct list_head client_list;
Dmitry Torokhovb1262072007-08-30 00:22:32 -040046 spinlock_t client_lock; /* protects client_list */
47 struct mutex mutex;
Dmitry Torokhov9657d752007-06-14 23:32:24 -040048 struct device dev;
49
Linus Torvalds1da177e2005-04-16 15:20:36 -070050 struct js_corr corr[ABS_MAX + 1];
51 struct JS_DATA_SAVE_TYPE glue;
52 int nabs;
53 int nkey;
54 __u16 keymap[KEY_MAX - BTN_MISC + 1];
55 __u16 keypam[KEY_MAX - BTN_MISC + 1];
56 __u8 absmap[ABS_MAX + 1];
57 __u8 abspam[ABS_MAX + 1];
58 __s16 abs[ABS_MAX + 1];
59};
60
Dmitry Torokhovd0ffb9b2007-04-12 01:30:00 -040061struct joydev_client {
Linus Torvalds1da177e2005-04-16 15:20:36 -070062 struct js_event buffer[JOYDEV_BUFFER_SIZE];
63 int head;
64 int tail;
65 int startup;
Dmitry Torokhovb1262072007-08-30 00:22:32 -040066 spinlock_t buffer_lock; /* protects access to buffer, head and tail */
Linus Torvalds1da177e2005-04-16 15:20:36 -070067 struct fasync_struct *fasync;
68 struct joydev *joydev;
69 struct list_head node;
70};
71
72static struct joydev *joydev_table[JOYDEV_MINORS];
Dmitry Torokhovb1262072007-08-30 00:22:32 -040073static DEFINE_MUTEX(joydev_table_mutex);
Linus Torvalds1da177e2005-04-16 15:20:36 -070074
75static int joydev_correct(int value, struct js_corr *corr)
76{
77 switch (corr->type) {
Dmitry Torokhovb1262072007-08-30 00:22:32 -040078
79 case JS_CORR_NONE:
80 break;
81
82 case JS_CORR_BROKEN:
83 value = value > corr->coef[0] ? (value < corr->coef[1] ? 0 :
84 ((corr->coef[3] * (value - corr->coef[1])) >> 14)) :
85 ((corr->coef[2] * (value - corr->coef[0])) >> 14);
86 break;
87
88 default:
89 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -070090 }
91
Dmitry Torokhov1e0afb22006-06-26 01:48:47 -040092 return value < -32767 ? -32767 : (value > 32767 ? 32767 : value);
Linus Torvalds1da177e2005-04-16 15:20:36 -070093}
94
Dmitry Torokhovb1262072007-08-30 00:22:32 -040095static void joydev_pass_event(struct joydev_client *client,
96 struct js_event *event)
97{
98 struct joydev *joydev = client->joydev;
99
100 /*
101 * IRQs already disabled, just acquire the lock
102 */
103 spin_lock(&client->buffer_lock);
104
105 client->buffer[client->head] = *event;
106
107 if (client->startup == joydev->nabs + joydev->nkey) {
108 client->head++;
109 client->head &= JOYDEV_BUFFER_SIZE - 1;
110 if (client->tail == client->head)
111 client->startup = 0;
112 }
113
114 spin_unlock(&client->buffer_lock);
115
116 kill_fasync(&client->fasync, SIGIO, POLL_IN);
117}
118
119static void joydev_event(struct input_handle *handle,
120 unsigned int type, unsigned int code, int value)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700121{
122 struct joydev *joydev = handle->private;
Dmitry Torokhovd0ffb9b2007-04-12 01:30:00 -0400123 struct joydev_client *client;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700124 struct js_event event;
125
126 switch (type) {
127
Dmitry Torokhovb1262072007-08-30 00:22:32 -0400128 case EV_KEY:
129 if (code < BTN_MISC || value == 2)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700130 return;
Dmitry Torokhovb1262072007-08-30 00:22:32 -0400131 event.type = JS_EVENT_BUTTON;
132 event.number = joydev->keymap[code - BTN_MISC];
133 event.value = value;
134 break;
135
136 case EV_ABS:
137 event.type = JS_EVENT_AXIS;
138 event.number = joydev->absmap[code];
139 event.value = joydev_correct(value,
140 &joydev->corr[event.number]);
141 if (event.value == joydev->abs[event.number])
142 return;
143 joydev->abs[event.number] = event.value;
144 break;
145
146 default:
147 return;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700148 }
149
Tobias Klauser6f5eacf2005-07-11 01:08:56 -0500150 event.time = jiffies_to_msecs(jiffies);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700151
Dmitry Torokhov82ba56c2007-10-13 15:46:55 -0400152 rcu_read_lock();
Dmitry Torokhovb1262072007-08-30 00:22:32 -0400153 list_for_each_entry_rcu(client, &joydev->client_list, node)
154 joydev_pass_event(client, &event);
Dmitry Torokhov82ba56c2007-10-13 15:46:55 -0400155 rcu_read_unlock();
Linus Torvalds1da177e2005-04-16 15:20:36 -0700156
157 wake_up_interruptible(&joydev->wait);
158}
159
160static int joydev_fasync(int fd, struct file *file, int on)
161{
Dmitry Torokhovd0ffb9b2007-04-12 01:30:00 -0400162 struct joydev_client *client = file->private_data;
Dmitry Torokhov1e0afb22006-06-26 01:48:47 -0400163
Jonathan Corbet60aa4922009-02-01 14:52:56 -0700164 return fasync_helper(fd, file, on, &client->fasync);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700165}
166
Dmitry Torokhov9657d752007-06-14 23:32:24 -0400167static void joydev_free(struct device *dev)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700168{
Dmitry Torokhov9657d752007-06-14 23:32:24 -0400169 struct joydev *joydev = container_of(dev, struct joydev, dev);
170
Dmitry Torokhova7097ff2008-04-01 00:22:53 -0400171 input_put_device(joydev->handle.dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700172 kfree(joydev);
173}
174
Dmitry Torokhovb1262072007-08-30 00:22:32 -0400175static void joydev_attach_client(struct joydev *joydev,
176 struct joydev_client *client)
177{
178 spin_lock(&joydev->client_lock);
179 list_add_tail_rcu(&client->node, &joydev->client_list);
180 spin_unlock(&joydev->client_lock);
Dmitry Torokhov82ba56c2007-10-13 15:46:55 -0400181 synchronize_rcu();
Dmitry Torokhovb1262072007-08-30 00:22:32 -0400182}
183
184static void joydev_detach_client(struct joydev *joydev,
185 struct joydev_client *client)
186{
187 spin_lock(&joydev->client_lock);
188 list_del_rcu(&client->node);
189 spin_unlock(&joydev->client_lock);
Dmitry Torokhov82ba56c2007-10-13 15:46:55 -0400190 synchronize_rcu();
Dmitry Torokhovb1262072007-08-30 00:22:32 -0400191}
192
193static int joydev_open_device(struct joydev *joydev)
194{
195 int retval;
196
197 retval = mutex_lock_interruptible(&joydev->mutex);
198 if (retval)
199 return retval;
200
201 if (!joydev->exist)
202 retval = -ENODEV;
Oliver Neukum06445012007-10-12 14:18:40 -0400203 else if (!joydev->open++) {
Dmitry Torokhovb1262072007-08-30 00:22:32 -0400204 retval = input_open_device(&joydev->handle);
Oliver Neukum06445012007-10-12 14:18:40 -0400205 if (retval)
206 joydev->open--;
207 }
Dmitry Torokhovb1262072007-08-30 00:22:32 -0400208
209 mutex_unlock(&joydev->mutex);
210 return retval;
211}
212
213static void joydev_close_device(struct joydev *joydev)
214{
215 mutex_lock(&joydev->mutex);
216
217 if (joydev->exist && !--joydev->open)
218 input_close_device(&joydev->handle);
219
220 mutex_unlock(&joydev->mutex);
221}
222
223/*
224 * Wake up users waiting for IO so they can disconnect from
225 * dead device.
226 */
227static void joydev_hangup(struct joydev *joydev)
228{
229 struct joydev_client *client;
230
231 spin_lock(&joydev->client_lock);
232 list_for_each_entry(client, &joydev->client_list, node)
233 kill_fasync(&client->fasync, SIGIO, POLL_HUP);
234 spin_unlock(&joydev->client_lock);
235
236 wake_up_interruptible(&joydev->wait);
237}
238
Dmitry Torokhovd0ffb9b2007-04-12 01:30:00 -0400239static int joydev_release(struct inode *inode, struct file *file)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700240{
Dmitry Torokhovd0ffb9b2007-04-12 01:30:00 -0400241 struct joydev_client *client = file->private_data;
242 struct joydev *joydev = client->joydev;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700243
Dmitry Torokhovb1262072007-08-30 00:22:32 -0400244 joydev_detach_client(joydev, client);
Dmitry Torokhovd0ffb9b2007-04-12 01:30:00 -0400245 kfree(client);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700246
Dmitry Torokhovb1262072007-08-30 00:22:32 -0400247 joydev_close_device(joydev);
Dmitry Torokhov9657d752007-06-14 23:32:24 -0400248 put_device(&joydev->dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700249
Linus Torvalds1da177e2005-04-16 15:20:36 -0700250 return 0;
251}
252
253static int joydev_open(struct inode *inode, struct file *file)
254{
Dmitry Torokhovd0ffb9b2007-04-12 01:30:00 -0400255 struct joydev_client *client;
256 struct joydev *joydev;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700257 int i = iminor(inode) - JOYDEV_MINOR_BASE;
Dmitry Torokhovd542ed82007-04-12 01:30:15 -0400258 int error;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700259
Dmitry Torokhovd0ffb9b2007-04-12 01:30:00 -0400260 if (i >= JOYDEV_MINORS)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700261 return -ENODEV;
262
Dmitry Torokhovb1262072007-08-30 00:22:32 -0400263 error = mutex_lock_interruptible(&joydev_table_mutex);
264 if (error)
265 return error;
Dmitry Torokhovd0ffb9b2007-04-12 01:30:00 -0400266 joydev = joydev_table[i];
Dmitry Torokhovb1262072007-08-30 00:22:32 -0400267 if (joydev)
268 get_device(&joydev->dev);
269 mutex_unlock(&joydev_table_mutex);
Dmitry Torokhovd0ffb9b2007-04-12 01:30:00 -0400270
Dmitry Torokhovb1262072007-08-30 00:22:32 -0400271 if (!joydev)
272 return -ENODEV;
Dmitry Torokhov9657d752007-06-14 23:32:24 -0400273
Dmitry Torokhovd0ffb9b2007-04-12 01:30:00 -0400274 client = kzalloc(sizeof(struct joydev_client), GFP_KERNEL);
Dmitry Torokhov9657d752007-06-14 23:32:24 -0400275 if (!client) {
276 error = -ENOMEM;
277 goto err_put_joydev;
278 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700279
Dmitry Torokhovb1262072007-08-30 00:22:32 -0400280 spin_lock_init(&client->buffer_lock);
Dmitry Torokhovd0ffb9b2007-04-12 01:30:00 -0400281 client->joydev = joydev;
Dmitry Torokhovb1262072007-08-30 00:22:32 -0400282 joydev_attach_client(joydev, client);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700283
Dmitry Torokhovb1262072007-08-30 00:22:32 -0400284 error = joydev_open_device(joydev);
285 if (error)
286 goto err_free_client;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700287
Dmitry Torokhovd0ffb9b2007-04-12 01:30:00 -0400288 file->private_data = client;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700289 return 0;
Dmitry Torokhov9657d752007-06-14 23:32:24 -0400290
291 err_free_client:
Dmitry Torokhovb1262072007-08-30 00:22:32 -0400292 joydev_detach_client(joydev, client);
Dmitry Torokhov9657d752007-06-14 23:32:24 -0400293 kfree(client);
294 err_put_joydev:
295 put_device(&joydev->dev);
296 return error;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700297}
298
Dmitry Torokhovb1262072007-08-30 00:22:32 -0400299static int joydev_generate_startup_event(struct joydev_client *client,
300 struct input_dev *input,
301 struct js_event *event)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700302{
Dmitry Torokhovb1262072007-08-30 00:22:32 -0400303 struct joydev *joydev = client->joydev;
304 int have_event;
305
306 spin_lock_irq(&client->buffer_lock);
307
308 have_event = client->startup < joydev->nabs + joydev->nkey;
309
310 if (have_event) {
311
312 event->time = jiffies_to_msecs(jiffies);
313 if (client->startup < joydev->nkey) {
314 event->type = JS_EVENT_BUTTON | JS_EVENT_INIT;
315 event->number = client->startup;
316 event->value = !!test_bit(joydev->keypam[event->number],
317 input->key);
318 } else {
319 event->type = JS_EVENT_AXIS | JS_EVENT_INIT;
320 event->number = client->startup - joydev->nkey;
321 event->value = joydev->abs[event->number];
322 }
323 client->startup++;
324 }
325
326 spin_unlock_irq(&client->buffer_lock);
327
328 return have_event;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700329}
330
Dmitry Torokhovb1262072007-08-30 00:22:32 -0400331static int joydev_fetch_next_event(struct joydev_client *client,
332 struct js_event *event)
333{
334 int have_event;
335
336 spin_lock_irq(&client->buffer_lock);
337
338 have_event = client->head != client->tail;
339 if (have_event) {
340 *event = client->buffer[client->tail++];
341 client->tail &= JOYDEV_BUFFER_SIZE - 1;
342 }
343
344 spin_unlock_irq(&client->buffer_lock);
345
346 return have_event;
347}
348
349/*
350 * Old joystick interface
351 */
352static ssize_t joydev_0x_read(struct joydev_client *client,
353 struct input_dev *input,
354 char __user *buf)
355{
356 struct joydev *joydev = client->joydev;
357 struct JS_DATA_TYPE data;
358 int i;
359
360 spin_lock_irq(&input->event_lock);
361
362 /*
363 * Get device state
364 */
365 for (data.buttons = i = 0; i < 32 && i < joydev->nkey; i++)
366 data.buttons |=
367 test_bit(joydev->keypam[i], input->key) ? (1 << i) : 0;
368 data.x = (joydev->abs[0] / 256 + 128) >> joydev->glue.JS_CORR.x;
369 data.y = (joydev->abs[1] / 256 + 128) >> joydev->glue.JS_CORR.y;
370
371 /*
372 * Reset reader's event queue
373 */
374 spin_lock(&client->buffer_lock);
375 client->startup = 0;
376 client->tail = client->head;
377 spin_unlock(&client->buffer_lock);
378
379 spin_unlock_irq(&input->event_lock);
380
381 if (copy_to_user(buf, &data, sizeof(struct JS_DATA_TYPE)))
382 return -EFAULT;
383
384 return sizeof(struct JS_DATA_TYPE);
385}
386
387static inline int joydev_data_pending(struct joydev_client *client)
388{
389 struct joydev *joydev = client->joydev;
390
391 return client->startup < joydev->nabs + joydev->nkey ||
392 client->head != client->tail;
393}
394
395static ssize_t joydev_read(struct file *file, char __user *buf,
396 size_t count, loff_t *ppos)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700397{
Dmitry Torokhovd0ffb9b2007-04-12 01:30:00 -0400398 struct joydev_client *client = file->private_data;
399 struct joydev *joydev = client->joydev;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700400 struct input_dev *input = joydev->handle.dev;
Dmitry Torokhovb1262072007-08-30 00:22:32 -0400401 struct js_event event;
402 int retval;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700403
Dmitry Torokhovd0ffb9b2007-04-12 01:30:00 -0400404 if (!joydev->exist)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700405 return -ENODEV;
406
407 if (count < sizeof(struct js_event))
408 return -EINVAL;
409
Dmitry Torokhovb1262072007-08-30 00:22:32 -0400410 if (count == sizeof(struct JS_DATA_TYPE))
411 return joydev_0x_read(client, input, buf);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700412
Dmitry Torokhovb1262072007-08-30 00:22:32 -0400413 if (!joydev_data_pending(client) && (file->f_flags & O_NONBLOCK))
Dmitry Torokhov1e0afb22006-06-26 01:48:47 -0400414 return -EAGAIN;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700415
Dmitry Torokhovd0ffb9b2007-04-12 01:30:00 -0400416 retval = wait_event_interruptible(joydev->wait,
Dmitry Torokhovb1262072007-08-30 00:22:32 -0400417 !joydev->exist || joydev_data_pending(client));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700418 if (retval)
419 return retval;
420
Dmitry Torokhovd0ffb9b2007-04-12 01:30:00 -0400421 if (!joydev->exist)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700422 return -ENODEV;
423
Dmitry Torokhovb1262072007-08-30 00:22:32 -0400424 while (retval + sizeof(struct js_event) <= count &&
425 joydev_generate_startup_event(client, input, &event)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700426
427 if (copy_to_user(buf + retval, &event, sizeof(struct js_event)))
428 return -EFAULT;
429
Linus Torvalds1da177e2005-04-16 15:20:36 -0700430 retval += sizeof(struct js_event);
431 }
432
Dmitry Torokhovb1262072007-08-30 00:22:32 -0400433 while (retval + sizeof(struct js_event) <= count &&
434 joydev_fetch_next_event(client, &event)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700435
Dmitry Torokhovb1262072007-08-30 00:22:32 -0400436 if (copy_to_user(buf + retval, &event, sizeof(struct js_event)))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700437 return -EFAULT;
438
Linus Torvalds1da177e2005-04-16 15:20:36 -0700439 retval += sizeof(struct js_event);
440 }
441
442 return retval;
443}
444
445/* No kernel lock - fine */
446static unsigned int joydev_poll(struct file *file, poll_table *wait)
447{
Dmitry Torokhovd0ffb9b2007-04-12 01:30:00 -0400448 struct joydev_client *client = file->private_data;
449 struct joydev *joydev = client->joydev;
Dmitry Torokhov1e0afb22006-06-26 01:48:47 -0400450
Dmitry Torokhovd0ffb9b2007-04-12 01:30:00 -0400451 poll_wait(file, &joydev->wait, wait);
Dmitry Torokhovb1262072007-08-30 00:22:32 -0400452 return (joydev_data_pending(client) ? (POLLIN | POLLRDNORM) : 0) |
453 (joydev->exist ? 0 : (POLLHUP | POLLERR));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700454}
455
Stephen Kitt999b8742009-08-25 19:24:22 -0700456static int joydev_handle_JSIOCSAXMAP(struct joydev *joydev,
457 void __user *argp, size_t len)
458{
459 __u8 *abspam;
460 int i;
461 int retval = 0;
462
463 len = min(len, sizeof(joydev->abspam));
464
465 /* Validate the map. */
466 abspam = kmalloc(len, GFP_KERNEL);
467 if (!abspam)
468 return -ENOMEM;
469
470 if (copy_from_user(abspam, argp, len)) {
471 retval = -EFAULT;
472 goto out;
473 }
474
475 for (i = 0; i < joydev->nabs; i++) {
476 if (abspam[i] > ABS_MAX) {
477 retval = -EINVAL;
478 goto out;
479 }
480 }
481
482 memcpy(joydev->abspam, abspam, len);
483
484 out:
485 kfree(abspam);
486 return retval;
487}
488
489static int joydev_handle_JSIOCSBTNMAP(struct joydev *joydev,
490 void __user *argp, size_t len)
491{
492 __u16 *keypam;
493 int i;
494 int retval = 0;
495
496 len = min(len, sizeof(joydev->keypam));
497
498 /* Validate the map. */
499 keypam = kmalloc(len, GFP_KERNEL);
500 if (!keypam)
501 return -ENOMEM;
502
503 if (copy_from_user(keypam, argp, len)) {
504 retval = -EFAULT;
505 goto out;
506 }
507
508 for (i = 0; i < joydev->nkey; i++) {
509 if (keypam[i] > KEY_MAX || keypam[i] < BTN_MISC) {
510 retval = -EINVAL;
511 goto out;
512 }
513 }
514
515 memcpy(joydev->keypam, keypam, len);
516
517 for (i = 0; i < joydev->nkey; i++)
518 joydev->keymap[keypam[i] - BTN_MISC] = i;
519
520 out:
521 kfree(keypam);
522 return retval;
523}
524
525
Dmitry Torokhovb1262072007-08-30 00:22:32 -0400526static int joydev_ioctl_common(struct joydev *joydev,
527 unsigned int cmd, void __user *argp)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700528{
Linus Torvalds1da177e2005-04-16 15:20:36 -0700529 struct input_dev *dev = joydev->handle.dev;
Stephen Kittec8b4b72009-08-12 01:12:08 -0700530 size_t len;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700531 int i, j;
Stephen Kittec8b4b72009-08-12 01:12:08 -0700532 const char *name;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700533
Stephen Kittec8b4b72009-08-12 01:12:08 -0700534 /* Process fixed-sized commands. */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700535 switch (cmd) {
536
Dmitry Torokhovb1262072007-08-30 00:22:32 -0400537 case JS_SET_CAL:
538 return copy_from_user(&joydev->glue.JS_CORR, argp,
Jeremy Fitzhardinge024ac442005-05-29 02:26:31 -0500539 sizeof(joydev->glue.JS_CORR)) ? -EFAULT : 0;
Dmitry Torokhov1e0afb22006-06-26 01:48:47 -0400540
Dmitry Torokhovb1262072007-08-30 00:22:32 -0400541 case JS_GET_CAL:
542 return copy_to_user(argp, &joydev->glue.JS_CORR,
Jeremy Fitzhardinge024ac442005-05-29 02:26:31 -0500543 sizeof(joydev->glue.JS_CORR)) ? -EFAULT : 0;
Dmitry Torokhov1e0afb22006-06-26 01:48:47 -0400544
Dmitry Torokhovb1262072007-08-30 00:22:32 -0400545 case JS_SET_TIMEOUT:
546 return get_user(joydev->glue.JS_TIMEOUT, (s32 __user *) argp);
Dmitry Torokhov1e0afb22006-06-26 01:48:47 -0400547
Dmitry Torokhovb1262072007-08-30 00:22:32 -0400548 case JS_GET_TIMEOUT:
549 return put_user(joydev->glue.JS_TIMEOUT, (s32 __user *) argp);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700550
Dmitry Torokhovb1262072007-08-30 00:22:32 -0400551 case JSIOCGVERSION:
552 return put_user(JS_VERSION, (__u32 __user *) argp);
Dmitry Torokhov1e0afb22006-06-26 01:48:47 -0400553
Dmitry Torokhovb1262072007-08-30 00:22:32 -0400554 case JSIOCGAXES:
555 return put_user(joydev->nabs, (__u8 __user *) argp);
Dmitry Torokhov1e0afb22006-06-26 01:48:47 -0400556
Dmitry Torokhovb1262072007-08-30 00:22:32 -0400557 case JSIOCGBUTTONS:
558 return put_user(joydev->nkey, (__u8 __user *) argp);
Dmitry Torokhov1e0afb22006-06-26 01:48:47 -0400559
Dmitry Torokhovb1262072007-08-30 00:22:32 -0400560 case JSIOCSCORR:
561 if (copy_from_user(joydev->corr, argp,
562 sizeof(joydev->corr[0]) * joydev->nabs))
563 return -EFAULT;
Dmitry Torokhov1e0afb22006-06-26 01:48:47 -0400564
Dmitry Torokhovb1262072007-08-30 00:22:32 -0400565 for (i = 0; i < joydev->nabs; i++) {
566 j = joydev->abspam[i];
567 joydev->abs[i] = joydev_correct(dev->abs[j],
568 &joydev->corr[i]);
569 }
570 return 0;
Dmitry Torokhov1e0afb22006-06-26 01:48:47 -0400571
Dmitry Torokhovb1262072007-08-30 00:22:32 -0400572 case JSIOCGCORR:
573 return copy_to_user(argp, joydev->corr,
574 sizeof(joydev->corr[0]) * joydev->nabs) ? -EFAULT : 0;
575
Stephen Kittec8b4b72009-08-12 01:12:08 -0700576 }
577
578 /*
579 * Process variable-sized commands (the axis and button map commands
580 * are considered variable-sized to decouple them from the values of
581 * ABS_MAX and KEY_MAX).
582 */
583 switch (cmd & ~IOCSIZE_MASK) {
584
585 case (JSIOCSAXMAP & ~IOCSIZE_MASK):
Stephen Kitt999b8742009-08-25 19:24:22 -0700586 return joydev_handle_JSIOCSAXMAP(joydev, argp, _IOC_SIZE(cmd));
Dmitry Torokhovb1262072007-08-30 00:22:32 -0400587
Stephen Kittec8b4b72009-08-12 01:12:08 -0700588 case (JSIOCGAXMAP & ~IOCSIZE_MASK):
589 len = min_t(size_t, _IOC_SIZE(cmd), sizeof(joydev->abspam));
Stephen Kitt999b8742009-08-25 19:24:22 -0700590 return copy_to_user(argp, joydev->abspam, len) ? -EFAULT : len;
Dmitry Torokhovb1262072007-08-30 00:22:32 -0400591
Stephen Kittec8b4b72009-08-12 01:12:08 -0700592 case (JSIOCSBTNMAP & ~IOCSIZE_MASK):
Stephen Kitt999b8742009-08-25 19:24:22 -0700593 return joydev_handle_JSIOCSBTNMAP(joydev, argp, _IOC_SIZE(cmd));
Dmitry Torokhovb1262072007-08-30 00:22:32 -0400594
Stephen Kittec8b4b72009-08-12 01:12:08 -0700595 case (JSIOCGBTNMAP & ~IOCSIZE_MASK):
596 len = min_t(size_t, _IOC_SIZE(cmd), sizeof(joydev->keypam));
Stephen Kitt999b8742009-08-25 19:24:22 -0700597 return copy_to_user(argp, joydev->keypam, len) ? -EFAULT : len;
Dmitry Torokhovb1262072007-08-30 00:22:32 -0400598
Stephen Kittec8b4b72009-08-12 01:12:08 -0700599 case JSIOCGNAME(0):
600 name = dev->name;
601 if (!name)
602 return 0;
Thadeu Lima de Souza Cascardo3d5cb602009-05-09 16:08:04 -0700603
Stephen Kittec8b4b72009-08-12 01:12:08 -0700604 len = min_t(size_t, _IOC_SIZE(cmd), strlen(name) + 1);
605 return copy_to_user(argp, name, len) ? -EFAULT : len;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700606 }
Stephen Kittec8b4b72009-08-12 01:12:08 -0700607
Linus Torvalds1da177e2005-04-16 15:20:36 -0700608 return -EINVAL;
609}
610
Jeremy Fitzhardinge024ac442005-05-29 02:26:31 -0500611#ifdef CONFIG_COMPAT
Dmitry Torokhovb1262072007-08-30 00:22:32 -0400612static long joydev_compat_ioctl(struct file *file,
613 unsigned int cmd, unsigned long arg)
Jeremy Fitzhardinge024ac442005-05-29 02:26:31 -0500614{
Dmitry Torokhovd0ffb9b2007-04-12 01:30:00 -0400615 struct joydev_client *client = file->private_data;
616 struct joydev *joydev = client->joydev;
Jeremy Fitzhardinge024ac442005-05-29 02:26:31 -0500617 void __user *argp = (void __user *)arg;
618 s32 tmp32;
619 struct JS_DATA_SAVE_TYPE_32 ds32;
Dmitry Torokhovb1262072007-08-30 00:22:32 -0400620 int retval;
Jeremy Fitzhardinge024ac442005-05-29 02:26:31 -0500621
Dmitry Torokhovb1262072007-08-30 00:22:32 -0400622 retval = mutex_lock_interruptible(&joydev->mutex);
623 if (retval)
624 return retval;
Dmitry Torokhov1e0afb22006-06-26 01:48:47 -0400625
Dmitry Torokhovb1262072007-08-30 00:22:32 -0400626 if (!joydev->exist) {
627 retval = -ENODEV;
628 goto out;
629 }
630
631 switch (cmd) {
632
Jeremy Fitzhardinge024ac442005-05-29 02:26:31 -0500633 case JS_SET_TIMELIMIT:
Dmitry Torokhovb1262072007-08-30 00:22:32 -0400634 retval = get_user(tmp32, (s32 __user *) arg);
635 if (retval == 0)
Jeremy Fitzhardinge024ac442005-05-29 02:26:31 -0500636 joydev->glue.JS_TIMELIMIT = tmp32;
637 break;
Dmitry Torokhovb1262072007-08-30 00:22:32 -0400638
Jeremy Fitzhardinge024ac442005-05-29 02:26:31 -0500639 case JS_GET_TIMELIMIT:
640 tmp32 = joydev->glue.JS_TIMELIMIT;
Dmitry Torokhovb1262072007-08-30 00:22:32 -0400641 retval = put_user(tmp32, (s32 __user *) arg);
Jeremy Fitzhardinge024ac442005-05-29 02:26:31 -0500642 break;
643
644 case JS_SET_ALL:
Dmitry Torokhovb1262072007-08-30 00:22:32 -0400645 retval = copy_from_user(&ds32, argp,
646 sizeof(ds32)) ? -EFAULT : 0;
647 if (retval == 0) {
Jeremy Fitzhardinge024ac442005-05-29 02:26:31 -0500648 joydev->glue.JS_TIMEOUT = ds32.JS_TIMEOUT;
649 joydev->glue.BUSY = ds32.BUSY;
650 joydev->glue.JS_EXPIRETIME = ds32.JS_EXPIRETIME;
651 joydev->glue.JS_TIMELIMIT = ds32.JS_TIMELIMIT;
652 joydev->glue.JS_SAVE = ds32.JS_SAVE;
653 joydev->glue.JS_CORR = ds32.JS_CORR;
654 }
655 break;
656
657 case JS_GET_ALL:
658 ds32.JS_TIMEOUT = joydev->glue.JS_TIMEOUT;
659 ds32.BUSY = joydev->glue.BUSY;
660 ds32.JS_EXPIRETIME = joydev->glue.JS_EXPIRETIME;
661 ds32.JS_TIMELIMIT = joydev->glue.JS_TIMELIMIT;
662 ds32.JS_SAVE = joydev->glue.JS_SAVE;
663 ds32.JS_CORR = joydev->glue.JS_CORR;
664
Dmitry Torokhovb1262072007-08-30 00:22:32 -0400665 retval = copy_to_user(argp, &ds32, sizeof(ds32)) ? -EFAULT : 0;
Jeremy Fitzhardinge024ac442005-05-29 02:26:31 -0500666 break;
667
668 default:
Dmitry Torokhovb1262072007-08-30 00:22:32 -0400669 retval = joydev_ioctl_common(joydev, cmd, argp);
670 break;
Jeremy Fitzhardinge024ac442005-05-29 02:26:31 -0500671 }
Dmitry Torokhovb1262072007-08-30 00:22:32 -0400672
673 out:
674 mutex_unlock(&joydev->mutex);
675 return retval;
Jeremy Fitzhardinge024ac442005-05-29 02:26:31 -0500676}
677#endif /* CONFIG_COMPAT */
678
Dmitry Torokhovb1262072007-08-30 00:22:32 -0400679static long joydev_ioctl(struct file *file,
680 unsigned int cmd, unsigned long arg)
Jeremy Fitzhardinge024ac442005-05-29 02:26:31 -0500681{
Dmitry Torokhovd0ffb9b2007-04-12 01:30:00 -0400682 struct joydev_client *client = file->private_data;
683 struct joydev *joydev = client->joydev;
Jeremy Fitzhardinge024ac442005-05-29 02:26:31 -0500684 void __user *argp = (void __user *)arg;
Dmitry Torokhovb1262072007-08-30 00:22:32 -0400685 int retval;
Jeremy Fitzhardinge024ac442005-05-29 02:26:31 -0500686
Dmitry Torokhovb1262072007-08-30 00:22:32 -0400687 retval = mutex_lock_interruptible(&joydev->mutex);
688 if (retval)
689 return retval;
Jeremy Fitzhardinge024ac442005-05-29 02:26:31 -0500690
Dmitry Torokhovb1262072007-08-30 00:22:32 -0400691 if (!joydev->exist) {
692 retval = -ENODEV;
693 goto out;
Jeremy Fitzhardinge024ac442005-05-29 02:26:31 -0500694 }
Dmitry Torokhovb1262072007-08-30 00:22:32 -0400695
696 switch (cmd) {
697
698 case JS_SET_TIMELIMIT:
699 retval = get_user(joydev->glue.JS_TIMELIMIT,
700 (long __user *) arg);
701 break;
702
703 case JS_GET_TIMELIMIT:
704 retval = put_user(joydev->glue.JS_TIMELIMIT,
705 (long __user *) arg);
706 break;
707
708 case JS_SET_ALL:
709 retval = copy_from_user(&joydev->glue, argp,
710 sizeof(joydev->glue)) ? -EFAULT: 0;
711 break;
712
713 case JS_GET_ALL:
714 retval = copy_to_user(argp, &joydev->glue,
715 sizeof(joydev->glue)) ? -EFAULT : 0;
716 break;
717
718 default:
719 retval = joydev_ioctl_common(joydev, cmd, argp);
720 break;
721 }
722 out:
723 mutex_unlock(&joydev->mutex);
724 return retval;
Jeremy Fitzhardinge024ac442005-05-29 02:26:31 -0500725}
726
Dmitry Torokhov66e66112006-09-14 01:31:59 -0400727static const struct file_operations joydev_fops = {
Dmitry Torokhovb1262072007-08-30 00:22:32 -0400728 .owner = THIS_MODULE,
729 .read = joydev_read,
730 .poll = joydev_poll,
731 .open = joydev_open,
732 .release = joydev_release,
733 .unlocked_ioctl = joydev_ioctl,
Jeremy Fitzhardinge024ac442005-05-29 02:26:31 -0500734#ifdef CONFIG_COMPAT
Dmitry Torokhovb1262072007-08-30 00:22:32 -0400735 .compat_ioctl = joydev_compat_ioctl,
Jeremy Fitzhardinge024ac442005-05-29 02:26:31 -0500736#endif
Dmitry Torokhovb1262072007-08-30 00:22:32 -0400737 .fasync = joydev_fasync,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700738};
739
Dmitry Torokhovb1262072007-08-30 00:22:32 -0400740static int joydev_install_chrdev(struct joydev *joydev)
741{
742 joydev_table[joydev->minor] = joydev;
743 return 0;
744}
745
746static void joydev_remove_chrdev(struct joydev *joydev)
747{
748 mutex_lock(&joydev_table_mutex);
749 joydev_table[joydev->minor] = NULL;
750 mutex_unlock(&joydev_table_mutex);
751}
752
753/*
754 * Mark device non-existant. This disables writes, ioctls and
755 * prevents new users from opening the device. Already posted
756 * blocking reads will stay, however new ones will fail.
757 */
758static void joydev_mark_dead(struct joydev *joydev)
759{
760 mutex_lock(&joydev->mutex);
761 joydev->exist = 0;
762 mutex_unlock(&joydev->mutex);
763}
764
765static void joydev_cleanup(struct joydev *joydev)
766{
767 struct input_handle *handle = &joydev->handle;
768
769 joydev_mark_dead(joydev);
770 joydev_hangup(joydev);
771 joydev_remove_chrdev(joydev);
772
773 /* joydev is marked dead so noone else accesses joydev->open */
774 if (joydev->open)
775 input_close_device(handle);
776}
777
Dmitry Torokhov5b2a0822007-04-12 01:29:46 -0400778static int joydev_connect(struct input_handler *handler, struct input_dev *dev,
779 const struct input_device_id *id)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700780{
781 struct joydev *joydev;
782 int i, j, t, minor;
Dmitry Torokhov5b2a0822007-04-12 01:29:46 -0400783 int error;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700784
Dmitry Torokhovb1262072007-08-30 00:22:32 -0400785 for (minor = 0; minor < JOYDEV_MINORS; minor++)
786 if (!joydev_table[minor])
787 break;
788
Linus Torvalds1da177e2005-04-16 15:20:36 -0700789 if (minor == JOYDEV_MINORS) {
790 printk(KERN_ERR "joydev: no more free joydev devices\n");
Dmitry Torokhov5b2a0822007-04-12 01:29:46 -0400791 return -ENFILE;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700792 }
793
Dmitry Torokhov5b2a0822007-04-12 01:29:46 -0400794 joydev = kzalloc(sizeof(struct joydev), GFP_KERNEL);
795 if (!joydev)
796 return -ENOMEM;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700797
Dmitry Torokhovd0ffb9b2007-04-12 01:30:00 -0400798 INIT_LIST_HEAD(&joydev->client_list);
Dmitry Torokhovb1262072007-08-30 00:22:32 -0400799 spin_lock_init(&joydev->client_lock);
800 mutex_init(&joydev->mutex);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700801 init_waitqueue_head(&joydev->wait);
802
Thadeu Lima de Souza Cascardo3d5cb602009-05-09 16:08:04 -0700803 dev_set_name(&joydev->dev, "js%d", minor);
Dmitry Torokhovb1262072007-08-30 00:22:32 -0400804 joydev->exist = 1;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700805 joydev->minor = minor;
Dmitry Torokhovb1262072007-08-30 00:22:32 -0400806
Linus Torvalds1da177e2005-04-16 15:20:36 -0700807 joydev->exist = 1;
Dmitry Torokhova7097ff2008-04-01 00:22:53 -0400808 joydev->handle.dev = input_get_device(dev);
Thadeu Lima de Souza Cascardo3d5cb602009-05-09 16:08:04 -0700809 joydev->handle.name = dev_name(&joydev->dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700810 joydev->handle.handler = handler;
811 joydev->handle.private = joydev;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700812
813 for (i = 0; i < ABS_MAX + 1; i++)
814 if (test_bit(i, dev->absbit)) {
815 joydev->absmap[i] = joydev->nabs;
816 joydev->abspam[joydev->nabs] = i;
817 joydev->nabs++;
818 }
819
820 for (i = BTN_JOYSTICK - BTN_MISC; i < KEY_MAX - BTN_MISC + 1; i++)
821 if (test_bit(i + BTN_MISC, dev->keybit)) {
822 joydev->keymap[i] = joydev->nkey;
823 joydev->keypam[joydev->nkey] = i + BTN_MISC;
824 joydev->nkey++;
825 }
826
Vojtech Pavlikf24949e2005-05-28 02:11:49 -0500827 for (i = 0; i < BTN_JOYSTICK - BTN_MISC; i++)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700828 if (test_bit(i + BTN_MISC, dev->keybit)) {
829 joydev->keymap[i] = joydev->nkey;
830 joydev->keypam[joydev->nkey] = i + BTN_MISC;
831 joydev->nkey++;
832 }
833
834 for (i = 0; i < joydev->nabs; i++) {
835 j = joydev->abspam[i];
836 if (dev->absmax[j] == dev->absmin[j]) {
837 joydev->corr[i].type = JS_CORR_NONE;
838 joydev->abs[i] = dev->abs[j];
839 continue;
840 }
841 joydev->corr[i].type = JS_CORR_BROKEN;
842 joydev->corr[i].prec = dev->absfuzz[j];
Dmitry Torokhovb1262072007-08-30 00:22:32 -0400843 joydev->corr[i].coef[0] =
844 (dev->absmax[j] + dev->absmin[j]) / 2 - dev->absflat[j];
845 joydev->corr[i].coef[1] =
846 (dev->absmax[j] + dev->absmin[j]) / 2 + dev->absflat[j];
Linus Torvalds1da177e2005-04-16 15:20:36 -0700847
Dmitry Torokhovb1262072007-08-30 00:22:32 -0400848 t = (dev->absmax[j] - dev->absmin[j]) / 2 - 2 * dev->absflat[j];
849 if (t) {
850 joydev->corr[i].coef[2] = (1 << 29) / t;
851 joydev->corr[i].coef[3] = (1 << 29) / t;
852
853 joydev->abs[i] = joydev_correct(dev->abs[j],
854 joydev->corr + i);
855 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700856 }
857
Dmitry Torokhovb1262072007-08-30 00:22:32 -0400858 joydev->dev.devt = MKDEV(INPUT_MAJOR, JOYDEV_MINOR_BASE + minor);
Dmitry Torokhov9657d752007-06-14 23:32:24 -0400859 joydev->dev.class = &input_class;
860 joydev->dev.parent = &dev->dev;
Dmitry Torokhov9657d752007-06-14 23:32:24 -0400861 joydev->dev.release = joydev_free;
862 device_initialize(&joydev->dev);
863
Dmitry Torokhovb1262072007-08-30 00:22:32 -0400864 error = input_register_handle(&joydev->handle);
Dmitry Torokhov5b2a0822007-04-12 01:29:46 -0400865 if (error)
Dmitry Torokhov9657d752007-06-14 23:32:24 -0400866 goto err_free_joydev;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700867
Dmitry Torokhovb1262072007-08-30 00:22:32 -0400868 error = joydev_install_chrdev(joydev);
Dmitry Torokhov5b2a0822007-04-12 01:29:46 -0400869 if (error)
Dmitry Torokhovb1262072007-08-30 00:22:32 -0400870 goto err_unregister_handle;
871
872 error = device_add(&joydev->dev);
873 if (error)
874 goto err_cleanup_joydev;
Dmitry Torokhov5b2a0822007-04-12 01:29:46 -0400875
876 return 0;
877
Dmitry Torokhovb1262072007-08-30 00:22:32 -0400878 err_cleanup_joydev:
879 joydev_cleanup(joydev);
880 err_unregister_handle:
881 input_unregister_handle(&joydev->handle);
Dmitry Torokhov5b2a0822007-04-12 01:29:46 -0400882 err_free_joydev:
Dmitry Torokhov9657d752007-06-14 23:32:24 -0400883 put_device(&joydev->dev);
Dmitry Torokhov5b2a0822007-04-12 01:29:46 -0400884 return error;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700885}
886
887static void joydev_disconnect(struct input_handle *handle)
888{
889 struct joydev *joydev = handle->private;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700890
Dmitry Torokhov9657d752007-06-14 23:32:24 -0400891 device_del(&joydev->dev);
Dmitry Torokhovb1262072007-08-30 00:22:32 -0400892 joydev_cleanup(joydev);
893 input_unregister_handle(handle);
Dmitry Torokhov9657d752007-06-14 23:32:24 -0400894 put_device(&joydev->dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700895}
896
Dmitry Torokhov66e66112006-09-14 01:31:59 -0400897static const struct input_device_id joydev_blacklist[] = {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700898 {
Dmitry Torokhovb1262072007-08-30 00:22:32 -0400899 .flags = INPUT_DEVICE_ID_MATCH_EVBIT |
900 INPUT_DEVICE_ID_MATCH_KEYBIT,
Jiri Slaby7b19ada2007-10-18 23:40:32 -0700901 .evbit = { BIT_MASK(EV_KEY) },
902 .keybit = { [BIT_WORD(BTN_TOUCH)] = BIT_MASK(BTN_TOUCH) },
Tim Coled07a9cb2009-05-07 17:08:42 -0700903 }, /* Avoid itouchpads and touchscreens */
904 {
905 .flags = INPUT_DEVICE_ID_MATCH_EVBIT |
906 INPUT_DEVICE_ID_MATCH_KEYBIT,
907 .evbit = { BIT_MASK(EV_KEY) },
908 .keybit = { [BIT_WORD(BTN_DIGI)] = BIT_MASK(BTN_DIGI) },
909 }, /* Avoid tablets, digitisers and similar devices */
Dmitry Torokhov1e0afb22006-06-26 01:48:47 -0400910 { } /* Terminating entry */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700911};
912
Dmitry Torokhov66e66112006-09-14 01:31:59 -0400913static const struct input_device_id joydev_ids[] = {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700914 {
Dmitry Torokhovb1262072007-08-30 00:22:32 -0400915 .flags = INPUT_DEVICE_ID_MATCH_EVBIT |
916 INPUT_DEVICE_ID_MATCH_ABSBIT,
Jiri Slaby7b19ada2007-10-18 23:40:32 -0700917 .evbit = { BIT_MASK(EV_ABS) },
918 .absbit = { BIT_MASK(ABS_X) },
Linus Torvalds1da177e2005-04-16 15:20:36 -0700919 },
920 {
Dmitry Torokhovb1262072007-08-30 00:22:32 -0400921 .flags = INPUT_DEVICE_ID_MATCH_EVBIT |
922 INPUT_DEVICE_ID_MATCH_ABSBIT,
Jiri Slaby7b19ada2007-10-18 23:40:32 -0700923 .evbit = { BIT_MASK(EV_ABS) },
924 .absbit = { BIT_MASK(ABS_WHEEL) },
Linus Torvalds1da177e2005-04-16 15:20:36 -0700925 },
926 {
Dmitry Torokhovb1262072007-08-30 00:22:32 -0400927 .flags = INPUT_DEVICE_ID_MATCH_EVBIT |
928 INPUT_DEVICE_ID_MATCH_ABSBIT,
Jiri Slaby7b19ada2007-10-18 23:40:32 -0700929 .evbit = { BIT_MASK(EV_ABS) },
930 .absbit = { BIT_MASK(ABS_THROTTLE) },
Linus Torvalds1da177e2005-04-16 15:20:36 -0700931 },
Dmitry Torokhov1e0afb22006-06-26 01:48:47 -0400932 { } /* Terminating entry */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700933};
934
935MODULE_DEVICE_TABLE(input, joydev_ids);
936
937static struct input_handler joydev_handler = {
Dmitry Torokhovb1262072007-08-30 00:22:32 -0400938 .event = joydev_event,
939 .connect = joydev_connect,
940 .disconnect = joydev_disconnect,
941 .fops = &joydev_fops,
942 .minor = JOYDEV_MINOR_BASE,
943 .name = "joydev",
944 .id_table = joydev_ids,
945 .blacklist = joydev_blacklist,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700946};
947
948static int __init joydev_init(void)
949{
Dmitry Torokhov4263cf02006-09-14 01:32:39 -0400950 return input_register_handler(&joydev_handler);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700951}
952
953static void __exit joydev_exit(void)
954{
955 input_unregister_handler(&joydev_handler);
956}
957
958module_init(joydev_init);
959module_exit(joydev_exit);