Commit | Line | Data |
---|---|---|
2874c5fd | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
1da177e4 LT |
2 | /* |
3 | * Joystick device driver for the input driver suite. | |
4 | * | |
5 | * Copyright (c) 1999-2002 Vojtech Pavlik | |
6 | * Copyright (c) 1999 Colin Van Dyke | |
1da177e4 LT |
7 | */ |
8 | ||
da0c4901 JP |
9 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
10 | ||
1da177e4 | 11 | #include <asm/io.h> |
1da177e4 LT |
12 | #include <linux/delay.h> |
13 | #include <linux/errno.h> | |
14 | #include <linux/joystick.h> | |
15 | #include <linux/input.h> | |
16 | #include <linux/kernel.h> | |
17 | #include <linux/major.h> | |
a99bbaf5 | 18 | #include <linux/sched.h> |
1da177e4 LT |
19 | #include <linux/slab.h> |
20 | #include <linux/mm.h> | |
1da177e4 LT |
21 | #include <linux/module.h> |
22 | #include <linux/poll.h> | |
23 | #include <linux/init.h> | |
1da177e4 | 24 | #include <linux/device.h> |
7f8d4cad | 25 | #include <linux/cdev.h> |
1da177e4 LT |
26 | |
27 | MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>"); | |
28 | MODULE_DESCRIPTION("Joystick device interfaces"); | |
1da177e4 LT |
29 | MODULE_LICENSE("GPL"); |
30 | ||
31 | #define JOYDEV_MINOR_BASE 0 | |
32 | #define JOYDEV_MINORS 16 | |
33 | #define JOYDEV_BUFFER_SIZE 64 | |
34 | ||
1da177e4 | 35 | struct joydev { |
1da177e4 | 36 | int open; |
1da177e4 LT |
37 | struct input_handle handle; |
38 | wait_queue_head_t wait; | |
d0ffb9be | 39 | struct list_head client_list; |
b126207c DT |
40 | spinlock_t client_lock; /* protects client_list */ |
41 | struct mutex mutex; | |
9657d75c | 42 | struct device dev; |
7f8d4cad | 43 | struct cdev cdev; |
20da92de | 44 | bool exist; |
9657d75c | 45 | |
81c2a3ba | 46 | struct js_corr corr[ABS_CNT]; |
1da177e4 LT |
47 | struct JS_DATA_SAVE_TYPE glue; |
48 | int nabs; | |
49 | int nkey; | |
50 | __u16 keymap[KEY_MAX - BTN_MISC + 1]; | |
51 | __u16 keypam[KEY_MAX - BTN_MISC + 1]; | |
81c2a3ba DM |
52 | __u8 absmap[ABS_CNT]; |
53 | __u8 abspam[ABS_CNT]; | |
54 | __s16 abs[ABS_CNT]; | |
1da177e4 LT |
55 | }; |
56 | ||
d0ffb9be | 57 | struct joydev_client { |
1da177e4 LT |
58 | struct js_event buffer[JOYDEV_BUFFER_SIZE]; |
59 | int head; | |
60 | int tail; | |
61 | int startup; | |
b126207c | 62 | spinlock_t buffer_lock; /* protects access to buffer, head and tail */ |
1da177e4 LT |
63 | struct fasync_struct *fasync; |
64 | struct joydev *joydev; | |
65 | struct list_head node; | |
66 | }; | |
67 | ||
1da177e4 LT |
68 | static int joydev_correct(int value, struct js_corr *corr) |
69 | { | |
70 | switch (corr->type) { | |
b126207c DT |
71 | |
72 | case JS_CORR_NONE: | |
73 | break; | |
74 | ||
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 | ||
81 | default: | |
82 | return 0; | |
1da177e4 LT |
83 | } |
84 | ||
5ec69524 | 85 | return clamp(value, -32767, 32767); |
1da177e4 LT |
86 | } |
87 | ||
b126207c DT |
88 | static void joydev_pass_event(struct joydev_client *client, |
89 | struct js_event *event) | |
90 | { | |
91 | struct joydev *joydev = client->joydev; | |
92 | ||
93 | /* | |
94 | * IRQs already disabled, just acquire the lock | |
95 | */ | |
96 | spin_lock(&client->buffer_lock); | |
97 | ||
98 | client->buffer[client->head] = *event; | |
99 | ||
100 | if (client->startup == joydev->nabs + joydev->nkey) { | |
101 | client->head++; | |
102 | client->head &= JOYDEV_BUFFER_SIZE - 1; | |
103 | if (client->tail == client->head) | |
104 | client->startup = 0; | |
105 | } | |
106 | ||
107 | spin_unlock(&client->buffer_lock); | |
108 | ||
109 | kill_fasync(&client->fasync, SIGIO, POLL_IN); | |
110 | } | |
111 | ||
112 | static void joydev_event(struct input_handle *handle, | |
113 | unsigned int type, unsigned int code, int value) | |
1da177e4 LT |
114 | { |
115 | struct joydev *joydev = handle->private; | |
d0ffb9be | 116 | struct joydev_client *client; |
1da177e4 LT |
117 | struct js_event event; |
118 | ||
119 | switch (type) { | |
120 | ||
b126207c DT |
121 | case EV_KEY: |
122 | if (code < BTN_MISC || value == 2) | |
123 | return; | |
124 | event.type = JS_EVENT_BUTTON; | |
125 | event.number = joydev->keymap[code - BTN_MISC]; | |
126 | event.value = value; | |
127 | break; | |
1da177e4 | 128 | |
b126207c DT |
129 | case EV_ABS: |
130 | event.type = JS_EVENT_AXIS; | |
131 | event.number = joydev->absmap[code]; | |
132 | event.value = joydev_correct(value, | |
133 | &joydev->corr[event.number]); | |
134 | if (event.value == joydev->abs[event.number]) | |
1da177e4 | 135 | return; |
b126207c DT |
136 | joydev->abs[event.number] = event.value; |
137 | break; | |
138 | ||
139 | default: | |
140 | return; | |
1da177e4 LT |
141 | } |
142 | ||
6f5eacfc | 143 | event.time = jiffies_to_msecs(jiffies); |
1da177e4 | 144 | |
82ba56c2 | 145 | rcu_read_lock(); |
b126207c DT |
146 | list_for_each_entry_rcu(client, &joydev->client_list, node) |
147 | joydev_pass_event(client, &event); | |
82ba56c2 | 148 | rcu_read_unlock(); |
1da177e4 LT |
149 | |
150 | wake_up_interruptible(&joydev->wait); | |
151 | } | |
152 | ||
153 | static int joydev_fasync(int fd, struct file *file, int on) | |
154 | { | |
d0ffb9be | 155 | struct joydev_client *client = file->private_data; |
1e0afb28 | 156 | |
60aa4924 | 157 | return fasync_helper(fd, file, on, &client->fasync); |
1da177e4 LT |
158 | } |
159 | ||
9657d75c | 160 | static void joydev_free(struct device *dev) |
1da177e4 | 161 | { |
9657d75c DT |
162 | struct joydev *joydev = container_of(dev, struct joydev, dev); |
163 | ||
a7097ff8 | 164 | input_put_device(joydev->handle.dev); |
1da177e4 LT |
165 | kfree(joydev); |
166 | } | |
167 | ||
b126207c DT |
168 | static void joydev_attach_client(struct joydev *joydev, |
169 | struct joydev_client *client) | |
170 | { | |
171 | spin_lock(&joydev->client_lock); | |
172 | list_add_tail_rcu(&client->node, &joydev->client_list); | |
173 | spin_unlock(&joydev->client_lock); | |
b126207c DT |
174 | } |
175 | ||
176 | static void joydev_detach_client(struct joydev *joydev, | |
177 | struct joydev_client *client) | |
178 | { | |
179 | spin_lock(&joydev->client_lock); | |
180 | list_del_rcu(&client->node); | |
181 | spin_unlock(&joydev->client_lock); | |
82ba56c2 | 182 | synchronize_rcu(); |
b126207c DT |
183 | } |
184 | ||
45536d37 RA |
185 | static void joydev_refresh_state(struct joydev *joydev) |
186 | { | |
187 | struct input_dev *dev = joydev->handle.dev; | |
188 | int i, val; | |
189 | ||
190 | for (i = 0; i < joydev->nabs; i++) { | |
191 | val = input_abs_get_val(dev, joydev->abspam[i]); | |
192 | joydev->abs[i] = joydev_correct(val, &joydev->corr[i]); | |
193 | } | |
194 | } | |
195 | ||
b126207c DT |
196 | static int joydev_open_device(struct joydev *joydev) |
197 | { | |
198 | int retval; | |
199 | ||
200 | retval = mutex_lock_interruptible(&joydev->mutex); | |
201 | if (retval) | |
202 | return retval; | |
203 | ||
204 | if (!joydev->exist) | |
205 | retval = -ENODEV; | |
06445014 | 206 | else if (!joydev->open++) { |
b126207c | 207 | retval = input_open_device(&joydev->handle); |
06445014 ON |
208 | if (retval) |
209 | joydev->open--; | |
45536d37 RA |
210 | else |
211 | joydev_refresh_state(joydev); | |
06445014 | 212 | } |
b126207c DT |
213 | |
214 | mutex_unlock(&joydev->mutex); | |
215 | return retval; | |
216 | } | |
217 | ||
218 | static void joydev_close_device(struct joydev *joydev) | |
219 | { | |
220 | mutex_lock(&joydev->mutex); | |
221 | ||
222 | if (joydev->exist && !--joydev->open) | |
223 | input_close_device(&joydev->handle); | |
224 | ||
225 | mutex_unlock(&joydev->mutex); | |
226 | } | |
227 | ||
228 | /* | |
229 | * Wake up users waiting for IO so they can disconnect from | |
230 | * dead device. | |
231 | */ | |
232 | static void joydev_hangup(struct joydev *joydev) | |
233 | { | |
234 | struct joydev_client *client; | |
235 | ||
236 | spin_lock(&joydev->client_lock); | |
237 | list_for_each_entry(client, &joydev->client_list, node) | |
238 | kill_fasync(&client->fasync, SIGIO, POLL_HUP); | |
239 | spin_unlock(&joydev->client_lock); | |
240 | ||
241 | wake_up_interruptible(&joydev->wait); | |
242 | } | |
243 | ||
d0ffb9be | 244 | static int joydev_release(struct inode *inode, struct file *file) |
1da177e4 | 245 | { |
d0ffb9be DT |
246 | struct joydev_client *client = file->private_data; |
247 | struct joydev *joydev = client->joydev; | |
1da177e4 | 248 | |
b126207c | 249 | joydev_detach_client(joydev, client); |
d0ffb9be | 250 | kfree(client); |
1da177e4 | 251 | |
b126207c | 252 | joydev_close_device(joydev); |
1da177e4 | 253 | |
1da177e4 LT |
254 | return 0; |
255 | } | |
256 | ||
257 | static int joydev_open(struct inode *inode, struct file *file) | |
258 | { | |
7f8d4cad DT |
259 | struct joydev *joydev = |
260 | container_of(inode->i_cdev, struct joydev, cdev); | |
d0ffb9be | 261 | struct joydev_client *client; |
d542ed82 | 262 | int error; |
1da177e4 | 263 | |
d0ffb9be | 264 | client = kzalloc(sizeof(struct joydev_client), GFP_KERNEL); |
7f8d4cad DT |
265 | if (!client) |
266 | return -ENOMEM; | |
1da177e4 | 267 | |
b126207c | 268 | spin_lock_init(&client->buffer_lock); |
d0ffb9be | 269 | client->joydev = joydev; |
b126207c | 270 | joydev_attach_client(joydev, client); |
1da177e4 | 271 | |
b126207c DT |
272 | error = joydev_open_device(joydev); |
273 | if (error) | |
274 | goto err_free_client; | |
1da177e4 | 275 | |
d0ffb9be | 276 | file->private_data = client; |
c5bf68fe | 277 | stream_open(inode, file); |
3d7bbd45 | 278 | |
1da177e4 | 279 | return 0; |
9657d75c DT |
280 | |
281 | err_free_client: | |
b126207c | 282 | joydev_detach_client(joydev, client); |
9657d75c | 283 | kfree(client); |
9657d75c | 284 | return error; |
1da177e4 LT |
285 | } |
286 | ||
b126207c DT |
287 | static int joydev_generate_startup_event(struct joydev_client *client, |
288 | struct input_dev *input, | |
289 | struct js_event *event) | |
1da177e4 | 290 | { |
b126207c DT |
291 | struct joydev *joydev = client->joydev; |
292 | int have_event; | |
293 | ||
294 | spin_lock_irq(&client->buffer_lock); | |
295 | ||
296 | have_event = client->startup < joydev->nabs + joydev->nkey; | |
297 | ||
298 | if (have_event) { | |
299 | ||
300 | event->time = jiffies_to_msecs(jiffies); | |
301 | if (client->startup < joydev->nkey) { | |
302 | event->type = JS_EVENT_BUTTON | JS_EVENT_INIT; | |
303 | event->number = client->startup; | |
304 | event->value = !!test_bit(joydev->keypam[event->number], | |
305 | input->key); | |
306 | } else { | |
307 | event->type = JS_EVENT_AXIS | JS_EVENT_INIT; | |
308 | event->number = client->startup - joydev->nkey; | |
309 | event->value = joydev->abs[event->number]; | |
310 | } | |
311 | client->startup++; | |
312 | } | |
313 | ||
314 | spin_unlock_irq(&client->buffer_lock); | |
315 | ||
316 | return have_event; | |
317 | } | |
318 | ||
319 | static int joydev_fetch_next_event(struct joydev_client *client, | |
320 | struct js_event *event) | |
321 | { | |
322 | int have_event; | |
323 | ||
324 | spin_lock_irq(&client->buffer_lock); | |
325 | ||
326 | have_event = client->head != client->tail; | |
327 | if (have_event) { | |
328 | *event = client->buffer[client->tail++]; | |
329 | client->tail &= JOYDEV_BUFFER_SIZE - 1; | |
330 | } | |
331 | ||
332 | spin_unlock_irq(&client->buffer_lock); | |
333 | ||
334 | return have_event; | |
335 | } | |
336 | ||
337 | /* | |
338 | * Old joystick interface | |
339 | */ | |
340 | static ssize_t joydev_0x_read(struct joydev_client *client, | |
341 | struct input_dev *input, | |
342 | char __user *buf) | |
343 | { | |
344 | struct joydev *joydev = client->joydev; | |
345 | struct JS_DATA_TYPE data; | |
346 | int i; | |
347 | ||
348 | spin_lock_irq(&input->event_lock); | |
349 | ||
350 | /* | |
351 | * Get device state | |
352 | */ | |
353 | for (data.buttons = i = 0; i < 32 && i < joydev->nkey; i++) | |
354 | data.buttons |= | |
355 | test_bit(joydev->keypam[i], input->key) ? (1 << i) : 0; | |
356 | data.x = (joydev->abs[0] / 256 + 128) >> joydev->glue.JS_CORR.x; | |
357 | data.y = (joydev->abs[1] / 256 + 128) >> joydev->glue.JS_CORR.y; | |
358 | ||
359 | /* | |
360 | * Reset reader's event queue | |
361 | */ | |
362 | spin_lock(&client->buffer_lock); | |
363 | client->startup = 0; | |
364 | client->tail = client->head; | |
365 | spin_unlock(&client->buffer_lock); | |
366 | ||
367 | spin_unlock_irq(&input->event_lock); | |
368 | ||
369 | if (copy_to_user(buf, &data, sizeof(struct JS_DATA_TYPE))) | |
370 | return -EFAULT; | |
371 | ||
372 | return sizeof(struct JS_DATA_TYPE); | |
1da177e4 LT |
373 | } |
374 | ||
b126207c DT |
375 | static inline int joydev_data_pending(struct joydev_client *client) |
376 | { | |
377 | struct joydev *joydev = client->joydev; | |
378 | ||
379 | return client->startup < joydev->nabs + joydev->nkey || | |
380 | client->head != client->tail; | |
381 | } | |
382 | ||
383 | static ssize_t joydev_read(struct file *file, char __user *buf, | |
384 | size_t count, loff_t *ppos) | |
1da177e4 | 385 | { |
d0ffb9be DT |
386 | struct joydev_client *client = file->private_data; |
387 | struct joydev *joydev = client->joydev; | |
1da177e4 | 388 | struct input_dev *input = joydev->handle.dev; |
b126207c DT |
389 | struct js_event event; |
390 | int retval; | |
1da177e4 | 391 | |
d0ffb9be | 392 | if (!joydev->exist) |
1da177e4 LT |
393 | return -ENODEV; |
394 | ||
395 | if (count < sizeof(struct js_event)) | |
396 | return -EINVAL; | |
397 | ||
b126207c DT |
398 | if (count == sizeof(struct JS_DATA_TYPE)) |
399 | return joydev_0x_read(client, input, buf); | |
1da177e4 | 400 | |
b126207c | 401 | if (!joydev_data_pending(client) && (file->f_flags & O_NONBLOCK)) |
1e0afb28 | 402 | return -EAGAIN; |
1da177e4 | 403 | |
d0ffb9be | 404 | retval = wait_event_interruptible(joydev->wait, |
b126207c | 405 | !joydev->exist || joydev_data_pending(client)); |
1da177e4 LT |
406 | if (retval) |
407 | return retval; | |
408 | ||
d0ffb9be | 409 | if (!joydev->exist) |
1da177e4 LT |
410 | return -ENODEV; |
411 | ||
b126207c DT |
412 | while (retval + sizeof(struct js_event) <= count && |
413 | joydev_generate_startup_event(client, input, &event)) { | |
1da177e4 LT |
414 | |
415 | if (copy_to_user(buf + retval, &event, sizeof(struct js_event))) | |
416 | return -EFAULT; | |
417 | ||
1da177e4 LT |
418 | retval += sizeof(struct js_event); |
419 | } | |
420 | ||
b126207c DT |
421 | while (retval + sizeof(struct js_event) <= count && |
422 | joydev_fetch_next_event(client, &event)) { | |
1da177e4 | 423 | |
b126207c | 424 | if (copy_to_user(buf + retval, &event, sizeof(struct js_event))) |
1da177e4 LT |
425 | return -EFAULT; |
426 | ||
1da177e4 LT |
427 | retval += sizeof(struct js_event); |
428 | } | |
429 | ||
430 | return retval; | |
431 | } | |
432 | ||
433 | /* No kernel lock - fine */ | |
afc9a42b | 434 | static __poll_t joydev_poll(struct file *file, poll_table *wait) |
1da177e4 | 435 | { |
d0ffb9be DT |
436 | struct joydev_client *client = file->private_data; |
437 | struct joydev *joydev = client->joydev; | |
1e0afb28 | 438 | |
d0ffb9be | 439 | poll_wait(file, &joydev->wait, wait); |
a9a08845 LT |
440 | return (joydev_data_pending(client) ? (EPOLLIN | EPOLLRDNORM) : 0) | |
441 | (joydev->exist ? 0 : (EPOLLHUP | EPOLLERR)); | |
1da177e4 LT |
442 | } |
443 | ||
999b874f SK |
444 | static int joydev_handle_JSIOCSAXMAP(struct joydev *joydev, |
445 | void __user *argp, size_t len) | |
446 | { | |
447 | __u8 *abspam; | |
448 | int i; | |
449 | int retval = 0; | |
450 | ||
451 | len = min(len, sizeof(joydev->abspam)); | |
452 | ||
453 | /* Validate the map. */ | |
5702222c | 454 | abspam = memdup_user(argp, len); |
5b21e3c7 JMC |
455 | if (IS_ERR(abspam)) |
456 | return PTR_ERR(abspam); | |
999b874f | 457 | |
182d679b | 458 | for (i = 0; i < len && i < joydev->nabs; i++) { |
999b874f SK |
459 | if (abspam[i] > ABS_MAX) { |
460 | retval = -EINVAL; | |
461 | goto out; | |
462 | } | |
463 | } | |
464 | ||
465 | memcpy(joydev->abspam, abspam, len); | |
466 | ||
d2520a42 KW |
467 | for (i = 0; i < joydev->nabs; i++) |
468 | joydev->absmap[joydev->abspam[i]] = i; | |
469 | ||
999b874f SK |
470 | out: |
471 | kfree(abspam); | |
472 | return retval; | |
473 | } | |
474 | ||
475 | static int joydev_handle_JSIOCSBTNMAP(struct joydev *joydev, | |
476 | void __user *argp, size_t len) | |
477 | { | |
478 | __u16 *keypam; | |
479 | int i; | |
480 | int retval = 0; | |
481 | ||
182d679b DC |
482 | if (len % sizeof(*keypam)) |
483 | return -EINVAL; | |
484 | ||
999b874f SK |
485 | len = min(len, sizeof(joydev->keypam)); |
486 | ||
487 | /* Validate the map. */ | |
5702222c | 488 | keypam = memdup_user(argp, len); |
5b21e3c7 JMC |
489 | if (IS_ERR(keypam)) |
490 | return PTR_ERR(keypam); | |
999b874f | 491 | |
182d679b | 492 | for (i = 0; i < (len / 2) && i < joydev->nkey; i++) { |
999b874f SK |
493 | if (keypam[i] > KEY_MAX || keypam[i] < BTN_MISC) { |
494 | retval = -EINVAL; | |
495 | goto out; | |
496 | } | |
497 | } | |
498 | ||
499 | memcpy(joydev->keypam, keypam, len); | |
500 | ||
501 | for (i = 0; i < joydev->nkey; i++) | |
f8f84af5 | 502 | joydev->keymap[joydev->keypam[i] - BTN_MISC] = i; |
999b874f SK |
503 | |
504 | out: | |
505 | kfree(keypam); | |
506 | return retval; | |
507 | } | |
508 | ||
509 | ||
b126207c DT |
510 | static int joydev_ioctl_common(struct joydev *joydev, |
511 | unsigned int cmd, void __user *argp) | |
1da177e4 | 512 | { |
1da177e4 | 513 | struct input_dev *dev = joydev->handle.dev; |
ec8b4b70 | 514 | size_t len; |
987a6c02 | 515 | int i; |
ec8b4b70 | 516 | const char *name; |
1da177e4 | 517 | |
ec8b4b70 | 518 | /* Process fixed-sized commands. */ |
1da177e4 LT |
519 | switch (cmd) { |
520 | ||
b126207c DT |
521 | case JS_SET_CAL: |
522 | return copy_from_user(&joydev->glue.JS_CORR, argp, | |
024ac44c | 523 | sizeof(joydev->glue.JS_CORR)) ? -EFAULT : 0; |
1e0afb28 | 524 | |
b126207c DT |
525 | case JS_GET_CAL: |
526 | return copy_to_user(argp, &joydev->glue.JS_CORR, | |
024ac44c | 527 | sizeof(joydev->glue.JS_CORR)) ? -EFAULT : 0; |
1e0afb28 | 528 | |
b126207c DT |
529 | case JS_SET_TIMEOUT: |
530 | return get_user(joydev->glue.JS_TIMEOUT, (s32 __user *) argp); | |
1e0afb28 | 531 | |
b126207c DT |
532 | case JS_GET_TIMEOUT: |
533 | return put_user(joydev->glue.JS_TIMEOUT, (s32 __user *) argp); | |
1da177e4 | 534 | |
b126207c DT |
535 | case JSIOCGVERSION: |
536 | return put_user(JS_VERSION, (__u32 __user *) argp); | |
1e0afb28 | 537 | |
b126207c DT |
538 | case JSIOCGAXES: |
539 | return put_user(joydev->nabs, (__u8 __user *) argp); | |
1e0afb28 | 540 | |
b126207c DT |
541 | case JSIOCGBUTTONS: |
542 | return put_user(joydev->nkey, (__u8 __user *) argp); | |
1e0afb28 | 543 | |
b126207c DT |
544 | case JSIOCSCORR: |
545 | if (copy_from_user(joydev->corr, argp, | |
546 | sizeof(joydev->corr[0]) * joydev->nabs)) | |
987a6c02 | 547 | return -EFAULT; |
1e0afb28 | 548 | |
b126207c | 549 | for (i = 0; i < joydev->nabs; i++) { |
987a6c02 DM |
550 | int val = input_abs_get_val(dev, joydev->abspam[i]); |
551 | joydev->abs[i] = joydev_correct(val, &joydev->corr[i]); | |
b126207c DT |
552 | } |
553 | return 0; | |
1e0afb28 | 554 | |
b126207c DT |
555 | case JSIOCGCORR: |
556 | return copy_to_user(argp, joydev->corr, | |
557 | sizeof(joydev->corr[0]) * joydev->nabs) ? -EFAULT : 0; | |
558 | ||
ec8b4b70 SK |
559 | } |
560 | ||
561 | /* | |
562 | * Process variable-sized commands (the axis and button map commands | |
563 | * are considered variable-sized to decouple them from the values of | |
564 | * ABS_MAX and KEY_MAX). | |
565 | */ | |
566 | switch (cmd & ~IOCSIZE_MASK) { | |
567 | ||
568 | case (JSIOCSAXMAP & ~IOCSIZE_MASK): | |
999b874f | 569 | return joydev_handle_JSIOCSAXMAP(joydev, argp, _IOC_SIZE(cmd)); |
b126207c | 570 | |
ec8b4b70 SK |
571 | case (JSIOCGAXMAP & ~IOCSIZE_MASK): |
572 | len = min_t(size_t, _IOC_SIZE(cmd), sizeof(joydev->abspam)); | |
999b874f | 573 | return copy_to_user(argp, joydev->abspam, len) ? -EFAULT : len; |
ec8b4b70 SK |
574 | |
575 | case (JSIOCSBTNMAP & ~IOCSIZE_MASK): | |
999b874f | 576 | return joydev_handle_JSIOCSBTNMAP(joydev, argp, _IOC_SIZE(cmd)); |
b126207c | 577 | |
ec8b4b70 SK |
578 | case (JSIOCGBTNMAP & ~IOCSIZE_MASK): |
579 | len = min_t(size_t, _IOC_SIZE(cmd), sizeof(joydev->keypam)); | |
999b874f | 580 | return copy_to_user(argp, joydev->keypam, len) ? -EFAULT : len; |
b126207c | 581 | |
ec8b4b70 SK |
582 | case JSIOCGNAME(0): |
583 | name = dev->name; | |
584 | if (!name) | |
585 | return 0; | |
586 | ||
587 | len = min_t(size_t, _IOC_SIZE(cmd), strlen(name) + 1); | |
588 | return copy_to_user(argp, name, len) ? -EFAULT : len; | |
1da177e4 | 589 | } |
ec8b4b70 | 590 | |
1da177e4 LT |
591 | return -EINVAL; |
592 | } | |
593 | ||
024ac44c | 594 | #ifdef CONFIG_COMPAT |
b126207c DT |
595 | static long joydev_compat_ioctl(struct file *file, |
596 | unsigned int cmd, unsigned long arg) | |
024ac44c | 597 | { |
d0ffb9be DT |
598 | struct joydev_client *client = file->private_data; |
599 | struct joydev *joydev = client->joydev; | |
024ac44c JF |
600 | void __user *argp = (void __user *)arg; |
601 | s32 tmp32; | |
602 | struct JS_DATA_SAVE_TYPE_32 ds32; | |
b126207c | 603 | int retval; |
024ac44c | 604 | |
b126207c DT |
605 | retval = mutex_lock_interruptible(&joydev->mutex); |
606 | if (retval) | |
607 | return retval; | |
608 | ||
609 | if (!joydev->exist) { | |
610 | retval = -ENODEV; | |
611 | goto out; | |
612 | } | |
613 | ||
614 | switch (cmd) { | |
1e0afb28 | 615 | |
024ac44c | 616 | case JS_SET_TIMELIMIT: |
b126207c DT |
617 | retval = get_user(tmp32, (s32 __user *) arg); |
618 | if (retval == 0) | |
024ac44c JF |
619 | joydev->glue.JS_TIMELIMIT = tmp32; |
620 | break; | |
b126207c | 621 | |
024ac44c JF |
622 | case JS_GET_TIMELIMIT: |
623 | tmp32 = joydev->glue.JS_TIMELIMIT; | |
b126207c | 624 | retval = put_user(tmp32, (s32 __user *) arg); |
024ac44c JF |
625 | break; |
626 | ||
627 | case JS_SET_ALL: | |
b126207c DT |
628 | retval = copy_from_user(&ds32, argp, |
629 | sizeof(ds32)) ? -EFAULT : 0; | |
630 | if (retval == 0) { | |
024ac44c JF |
631 | joydev->glue.JS_TIMEOUT = ds32.JS_TIMEOUT; |
632 | joydev->glue.BUSY = ds32.BUSY; | |
633 | joydev->glue.JS_EXPIRETIME = ds32.JS_EXPIRETIME; | |
634 | joydev->glue.JS_TIMELIMIT = ds32.JS_TIMELIMIT; | |
635 | joydev->glue.JS_SAVE = ds32.JS_SAVE; | |
636 | joydev->glue.JS_CORR = ds32.JS_CORR; | |
637 | } | |
638 | break; | |
639 | ||
640 | case JS_GET_ALL: | |
641 | ds32.JS_TIMEOUT = joydev->glue.JS_TIMEOUT; | |
642 | ds32.BUSY = joydev->glue.BUSY; | |
643 | ds32.JS_EXPIRETIME = joydev->glue.JS_EXPIRETIME; | |
644 | ds32.JS_TIMELIMIT = joydev->glue.JS_TIMELIMIT; | |
645 | ds32.JS_SAVE = joydev->glue.JS_SAVE; | |
646 | ds32.JS_CORR = joydev->glue.JS_CORR; | |
647 | ||
b126207c | 648 | retval = copy_to_user(argp, &ds32, sizeof(ds32)) ? -EFAULT : 0; |
024ac44c JF |
649 | break; |
650 | ||
651 | default: | |
b126207c DT |
652 | retval = joydev_ioctl_common(joydev, cmd, argp); |
653 | break; | |
024ac44c | 654 | } |
b126207c DT |
655 | |
656 | out: | |
657 | mutex_unlock(&joydev->mutex); | |
658 | return retval; | |
024ac44c JF |
659 | } |
660 | #endif /* CONFIG_COMPAT */ | |
661 | ||
b126207c DT |
662 | static long joydev_ioctl(struct file *file, |
663 | unsigned int cmd, unsigned long arg) | |
024ac44c | 664 | { |
d0ffb9be DT |
665 | struct joydev_client *client = file->private_data; |
666 | struct joydev *joydev = client->joydev; | |
024ac44c | 667 | void __user *argp = (void __user *)arg; |
b126207c | 668 | int retval; |
024ac44c | 669 | |
b126207c DT |
670 | retval = mutex_lock_interruptible(&joydev->mutex); |
671 | if (retval) | |
672 | return retval; | |
024ac44c | 673 | |
b126207c DT |
674 | if (!joydev->exist) { |
675 | retval = -ENODEV; | |
676 | goto out; | |
024ac44c | 677 | } |
b126207c DT |
678 | |
679 | switch (cmd) { | |
680 | ||
681 | case JS_SET_TIMELIMIT: | |
682 | retval = get_user(joydev->glue.JS_TIMELIMIT, | |
683 | (long __user *) arg); | |
684 | break; | |
685 | ||
686 | case JS_GET_TIMELIMIT: | |
687 | retval = put_user(joydev->glue.JS_TIMELIMIT, | |
688 | (long __user *) arg); | |
689 | break; | |
690 | ||
691 | case JS_SET_ALL: | |
692 | retval = copy_from_user(&joydev->glue, argp, | |
41091ad0 | 693 | sizeof(joydev->glue)) ? -EFAULT : 0; |
b126207c DT |
694 | break; |
695 | ||
696 | case JS_GET_ALL: | |
697 | retval = copy_to_user(argp, &joydev->glue, | |
698 | sizeof(joydev->glue)) ? -EFAULT : 0; | |
699 | break; | |
700 | ||
701 | default: | |
702 | retval = joydev_ioctl_common(joydev, cmd, argp); | |
703 | break; | |
704 | } | |
705 | out: | |
706 | mutex_unlock(&joydev->mutex); | |
707 | return retval; | |
024ac44c JF |
708 | } |
709 | ||
66e66118 | 710 | static const struct file_operations joydev_fops = { |
b126207c DT |
711 | .owner = THIS_MODULE, |
712 | .read = joydev_read, | |
713 | .poll = joydev_poll, | |
714 | .open = joydev_open, | |
715 | .release = joydev_release, | |
716 | .unlocked_ioctl = joydev_ioctl, | |
024ac44c | 717 | #ifdef CONFIG_COMPAT |
b126207c | 718 | .compat_ioctl = joydev_compat_ioctl, |
024ac44c | 719 | #endif |
b126207c | 720 | .fasync = joydev_fasync, |
6038f373 | 721 | .llseek = no_llseek, |
1da177e4 LT |
722 | }; |
723 | ||
b126207c | 724 | /* |
25985edc | 725 | * Mark device non-existent. This disables writes, ioctls and |
b126207c DT |
726 | * prevents new users from opening the device. Already posted |
727 | * blocking reads will stay, however new ones will fail. | |
728 | */ | |
729 | static void joydev_mark_dead(struct joydev *joydev) | |
730 | { | |
731 | mutex_lock(&joydev->mutex); | |
20da92de | 732 | joydev->exist = false; |
b126207c DT |
733 | mutex_unlock(&joydev->mutex); |
734 | } | |
735 | ||
736 | static void joydev_cleanup(struct joydev *joydev) | |
737 | { | |
738 | struct input_handle *handle = &joydev->handle; | |
739 | ||
740 | joydev_mark_dead(joydev); | |
741 | joydev_hangup(joydev); | |
7f8d4cad | 742 | |
25985edc | 743 | /* joydev is marked dead so no one else accesses joydev->open */ |
b126207c DT |
744 | if (joydev->open) |
745 | input_close_device(handle); | |
746 | } | |
747 | ||
20ac95d5 | 748 | /* |
5db8a0d3 | 749 | * These codes are copied from hid-ids.h, unfortunately there is no common |
20ac95d5 RC |
750 | * usb_ids/bt_ids.h header. |
751 | */ | |
752 | #define USB_VENDOR_ID_SONY 0x054c | |
753 | #define USB_DEVICE_ID_SONY_PS3_CONTROLLER 0x0268 | |
754 | #define USB_DEVICE_ID_SONY_PS4_CONTROLLER 0x05c4 | |
755 | #define USB_DEVICE_ID_SONY_PS4_CONTROLLER_2 0x09cc | |
756 | #define USB_DEVICE_ID_SONY_PS4_CONTROLLER_DONGLE 0x0ba0 | |
757 | ||
758 | #define USB_VENDOR_ID_THQ 0x20d6 | |
759 | #define USB_DEVICE_ID_THQ_PS3_UDRAW 0xcb17 | |
760 | ||
4ff5b108 DO |
761 | #define USB_VENDOR_ID_NINTENDO 0x057e |
762 | #define USB_DEVICE_ID_NINTENDO_JOYCONL 0x2006 | |
763 | #define USB_DEVICE_ID_NINTENDO_JOYCONR 0x2007 | |
764 | #define USB_DEVICE_ID_NINTENDO_PROCON 0x2009 | |
765 | #define USB_DEVICE_ID_NINTENDO_CHRGGRIP 0x200E | |
766 | ||
20ac95d5 RC |
767 | #define ACCEL_DEV(vnd, prd) \ |
768 | { \ | |
769 | .flags = INPUT_DEVICE_ID_MATCH_VENDOR | \ | |
770 | INPUT_DEVICE_ID_MATCH_PRODUCT | \ | |
771 | INPUT_DEVICE_ID_MATCH_PROPBIT, \ | |
772 | .vendor = (vnd), \ | |
773 | .product = (prd), \ | |
774 | .propbit = { BIT_MASK(INPUT_PROP_ACCELEROMETER) }, \ | |
775 | } | |
776 | ||
777 | static const struct input_device_id joydev_blacklist[] = { | |
778 | /* Avoid touchpads and touchscreens */ | |
779 | { | |
780 | .flags = INPUT_DEVICE_ID_MATCH_EVBIT | | |
781 | INPUT_DEVICE_ID_MATCH_KEYBIT, | |
782 | .evbit = { BIT_MASK(EV_KEY) }, | |
783 | .keybit = { [BIT_WORD(BTN_TOUCH)] = BIT_MASK(BTN_TOUCH) }, | |
784 | }, | |
785 | /* Avoid tablets, digitisers and similar devices */ | |
786 | { | |
787 | .flags = INPUT_DEVICE_ID_MATCH_EVBIT | | |
788 | INPUT_DEVICE_ID_MATCH_KEYBIT, | |
789 | .evbit = { BIT_MASK(EV_KEY) }, | |
790 | .keybit = { [BIT_WORD(BTN_DIGI)] = BIT_MASK(BTN_DIGI) }, | |
791 | }, | |
792 | /* Disable accelerometers on composite devices */ | |
793 | ACCEL_DEV(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_PS3_CONTROLLER), | |
794 | ACCEL_DEV(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_PS4_CONTROLLER), | |
795 | ACCEL_DEV(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_PS4_CONTROLLER_2), | |
796 | ACCEL_DEV(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_PS4_CONTROLLER_DONGLE), | |
797 | ACCEL_DEV(USB_VENDOR_ID_THQ, USB_DEVICE_ID_THQ_PS3_UDRAW), | |
4ff5b108 DO |
798 | ACCEL_DEV(USB_VENDOR_ID_NINTENDO, USB_DEVICE_ID_NINTENDO_PROCON), |
799 | ACCEL_DEV(USB_VENDOR_ID_NINTENDO, USB_DEVICE_ID_NINTENDO_CHRGGRIP), | |
800 | ACCEL_DEV(USB_VENDOR_ID_NINTENDO, USB_DEVICE_ID_NINTENDO_JOYCONL), | |
801 | ACCEL_DEV(USB_VENDOR_ID_NINTENDO, USB_DEVICE_ID_NINTENDO_JOYCONR), | |
20ac95d5 RC |
802 | { /* sentinel */ } |
803 | }; | |
804 | ||
805 | static bool joydev_dev_is_blacklisted(struct input_dev *dev) | |
806 | { | |
807 | const struct input_device_id *id; | |
808 | ||
809 | for (id = joydev_blacklist; id->flags; id++) { | |
810 | if (input_match_device_id(dev, id)) { | |
811 | dev_dbg(&dev->dev, | |
812 | "joydev: blacklisting '%s'\n", dev->name); | |
813 | return true; | |
814 | } | |
815 | } | |
816 | ||
817 | return false; | |
818 | } | |
819 | ||
15397f15 TH |
820 | static bool joydev_dev_is_absolute_mouse(struct input_dev *dev) |
821 | { | |
822 | DECLARE_BITMAP(jd_scratch, KEY_CNT); | |
8d3c60c7 | 823 | bool ev_match = false; |
15397f15 TH |
824 | |
825 | BUILD_BUG_ON(ABS_CNT > KEY_CNT || EV_CNT > KEY_CNT); | |
826 | ||
827 | /* | |
828 | * Virtualization (VMware, etc) and remote management (HP | |
829 | * ILO2) solutions use absolute coordinates for their virtual | |
830 | * pointing devices so that there is one-to-one relationship | |
831 | * between pointer position on the host screen and virtual | |
832 | * guest screen, and so their mice use ABS_X, ABS_Y and 3 | |
833 | * primary button events. This clashes with what joydev | |
834 | * considers to be joysticks (a device with at minimum ABS_X | |
835 | * axis). | |
836 | * | |
837 | * Here we are trying to separate absolute mice from | |
838 | * joysticks. A device is, for joystick detection purposes, | |
839 | * considered to be an absolute mouse if the following is | |
840 | * true: | |
841 | * | |
8d3c60c7 AT |
842 | * 1) Event types are exactly |
843 | * EV_ABS, EV_KEY and EV_SYN | |
844 | * or | |
845 | * EV_ABS, EV_KEY, EV_SYN and EV_MSC | |
846 | * or | |
847 | * EV_ABS, EV_KEY, EV_SYN, EV_MSC and EV_REL. | |
15397f15 TH |
848 | * 2) Absolute events are exactly ABS_X and ABS_Y. |
849 | * 3) Keys are exactly BTN_LEFT, BTN_RIGHT and BTN_MIDDLE. | |
850 | * 4) Device is not on "Amiga" bus. | |
851 | */ | |
852 | ||
853 | bitmap_zero(jd_scratch, EV_CNT); | |
8d3c60c7 | 854 | /* VMware VMMouse, HP ILO2 */ |
15397f15 TH |
855 | __set_bit(EV_ABS, jd_scratch); |
856 | __set_bit(EV_KEY, jd_scratch); | |
857 | __set_bit(EV_SYN, jd_scratch); | |
8d3c60c7 AT |
858 | if (bitmap_equal(jd_scratch, dev->evbit, EV_CNT)) |
859 | ev_match = true; | |
860 | ||
861 | /* HP ILO2, AMI BMC firmware */ | |
862 | __set_bit(EV_MSC, jd_scratch); | |
863 | if (bitmap_equal(jd_scratch, dev->evbit, EV_CNT)) | |
864 | ev_match = true; | |
865 | ||
866 | /* VMware Virtual USB Mouse, QEMU USB Tablet, ATEN BMC firmware */ | |
867 | __set_bit(EV_REL, jd_scratch); | |
868 | if (bitmap_equal(jd_scratch, dev->evbit, EV_CNT)) | |
869 | ev_match = true; | |
870 | ||
871 | if (!ev_match) | |
15397f15 TH |
872 | return false; |
873 | ||
874 | bitmap_zero(jd_scratch, ABS_CNT); | |
875 | __set_bit(ABS_X, jd_scratch); | |
876 | __set_bit(ABS_Y, jd_scratch); | |
877 | if (!bitmap_equal(dev->absbit, jd_scratch, ABS_CNT)) | |
878 | return false; | |
879 | ||
880 | bitmap_zero(jd_scratch, KEY_CNT); | |
881 | __set_bit(BTN_LEFT, jd_scratch); | |
882 | __set_bit(BTN_RIGHT, jd_scratch); | |
883 | __set_bit(BTN_MIDDLE, jd_scratch); | |
884 | ||
885 | if (!bitmap_equal(dev->keybit, jd_scratch, KEY_CNT)) | |
886 | return false; | |
887 | ||
888 | /* | |
889 | * Amiga joystick (amijoy) historically uses left/middle/right | |
890 | * button events. | |
891 | */ | |
892 | if (dev->id.bustype == BUS_AMIGA) | |
893 | return false; | |
894 | ||
895 | return true; | |
896 | } | |
0b7024ac DT |
897 | |
898 | static bool joydev_match(struct input_handler *handler, struct input_dev *dev) | |
899 | { | |
20ac95d5 RC |
900 | /* Disable blacklisted devices */ |
901 | if (joydev_dev_is_blacklisted(dev)) | |
0b7024ac DT |
902 | return false; |
903 | ||
15397f15 TH |
904 | /* Avoid absolute mice */ |
905 | if (joydev_dev_is_absolute_mouse(dev)) | |
906 | return false; | |
907 | ||
0b7024ac DT |
908 | return true; |
909 | } | |
910 | ||
5b2a0826 DT |
911 | static int joydev_connect(struct input_handler *handler, struct input_dev *dev, |
912 | const struct input_device_id *id) | |
1da177e4 LT |
913 | { |
914 | struct joydev *joydev; | |
7f8d4cad | 915 | int i, j, t, minor, dev_no; |
5b2a0826 | 916 | int error; |
1da177e4 | 917 | |
7f8d4cad DT |
918 | minor = input_get_new_minor(JOYDEV_MINOR_BASE, JOYDEV_MINORS, true); |
919 | if (minor < 0) { | |
920 | error = minor; | |
921 | pr_err("failed to reserve new minor: %d\n", error); | |
922 | return error; | |
1da177e4 LT |
923 | } |
924 | ||
5b2a0826 | 925 | joydev = kzalloc(sizeof(struct joydev), GFP_KERNEL); |
7f8d4cad DT |
926 | if (!joydev) { |
927 | error = -ENOMEM; | |
928 | goto err_free_minor; | |
929 | } | |
1da177e4 | 930 | |
d0ffb9be | 931 | INIT_LIST_HEAD(&joydev->client_list); |
b126207c DT |
932 | spin_lock_init(&joydev->client_lock); |
933 | mutex_init(&joydev->mutex); | |
1da177e4 | 934 | init_waitqueue_head(&joydev->wait); |
20da92de | 935 | joydev->exist = true; |
7f8d4cad DT |
936 | |
937 | dev_no = minor; | |
938 | /* Normalize device number if it falls into legacy range */ | |
939 | if (dev_no < JOYDEV_MINOR_BASE + JOYDEV_MINORS) | |
940 | dev_no -= JOYDEV_MINOR_BASE; | |
941 | dev_set_name(&joydev->dev, "js%d", dev_no); | |
b126207c | 942 | |
a7097ff8 | 943 | joydev->handle.dev = input_get_device(dev); |
3d5cb60e | 944 | joydev->handle.name = dev_name(&joydev->dev); |
1da177e4 LT |
945 | joydev->handle.handler = handler; |
946 | joydev->handle.private = joydev; | |
1da177e4 | 947 | |
f23487cd AG |
948 | for_each_set_bit(i, dev->absbit, ABS_CNT) { |
949 | joydev->absmap[i] = joydev->nabs; | |
950 | joydev->abspam[joydev->nabs] = i; | |
951 | joydev->nabs++; | |
952 | } | |
1da177e4 LT |
953 | |
954 | for (i = BTN_JOYSTICK - BTN_MISC; i < KEY_MAX - BTN_MISC + 1; i++) | |
955 | if (test_bit(i + BTN_MISC, dev->keybit)) { | |
956 | joydev->keymap[i] = joydev->nkey; | |
957 | joydev->keypam[joydev->nkey] = i + BTN_MISC; | |
958 | joydev->nkey++; | |
959 | } | |
960 | ||
f24949e8 | 961 | for (i = 0; i < BTN_JOYSTICK - BTN_MISC; i++) |
1da177e4 LT |
962 | if (test_bit(i + BTN_MISC, dev->keybit)) { |
963 | joydev->keymap[i] = joydev->nkey; | |
964 | joydev->keypam[joydev->nkey] = i + BTN_MISC; | |
965 | joydev->nkey++; | |
966 | } | |
967 | ||
968 | for (i = 0; i < joydev->nabs; i++) { | |
969 | j = joydev->abspam[i]; | |
987a6c02 | 970 | if (input_abs_get_max(dev, j) == input_abs_get_min(dev, j)) { |
1da177e4 | 971 | joydev->corr[i].type = JS_CORR_NONE; |
1da177e4 LT |
972 | continue; |
973 | } | |
974 | joydev->corr[i].type = JS_CORR_BROKEN; | |
987a6c02 DM |
975 | joydev->corr[i].prec = input_abs_get_fuzz(dev, j); |
976 | ||
977 | t = (input_abs_get_max(dev, j) + input_abs_get_min(dev, j)) / 2; | |
978 | joydev->corr[i].coef[0] = t - input_abs_get_flat(dev, j); | |
979 | joydev->corr[i].coef[1] = t + input_abs_get_flat(dev, j); | |
b126207c | 980 | |
987a6c02 DM |
981 | t = (input_abs_get_max(dev, j) - input_abs_get_min(dev, j)) / 2 |
982 | - 2 * input_abs_get_flat(dev, j); | |
b126207c DT |
983 | if (t) { |
984 | joydev->corr[i].coef[2] = (1 << 29) / t; | |
985 | joydev->corr[i].coef[3] = (1 << 29) / t; | |
b126207c | 986 | } |
1da177e4 LT |
987 | } |
988 | ||
7f8d4cad | 989 | joydev->dev.devt = MKDEV(INPUT_MAJOR, minor); |
9657d75c DT |
990 | joydev->dev.class = &input_class; |
991 | joydev->dev.parent = &dev->dev; | |
9657d75c DT |
992 | joydev->dev.release = joydev_free; |
993 | device_initialize(&joydev->dev); | |
5b2a0826 | 994 | |
b126207c | 995 | error = input_register_handle(&joydev->handle); |
5b2a0826 | 996 | if (error) |
9657d75c | 997 | goto err_free_joydev; |
5b2a0826 | 998 | |
7f8d4cad | 999 | cdev_init(&joydev->cdev, &joydev_fops); |
b126207c | 1000 | |
358a89ca | 1001 | error = cdev_device_add(&joydev->cdev, &joydev->dev); |
b126207c DT |
1002 | if (error) |
1003 | goto err_cleanup_joydev; | |
5b2a0826 DT |
1004 | |
1005 | return 0; | |
1da177e4 | 1006 | |
b126207c DT |
1007 | err_cleanup_joydev: |
1008 | joydev_cleanup(joydev); | |
b126207c | 1009 | input_unregister_handle(&joydev->handle); |
5b2a0826 | 1010 | err_free_joydev: |
9657d75c | 1011 | put_device(&joydev->dev); |
7f8d4cad DT |
1012 | err_free_minor: |
1013 | input_free_minor(minor); | |
5b2a0826 | 1014 | return error; |
1da177e4 LT |
1015 | } |
1016 | ||
1017 | static void joydev_disconnect(struct input_handle *handle) | |
1018 | { | |
1019 | struct joydev *joydev = handle->private; | |
1da177e4 | 1020 | |
358a89ca | 1021 | cdev_device_del(&joydev->cdev, &joydev->dev); |
b126207c | 1022 | joydev_cleanup(joydev); |
7f8d4cad | 1023 | input_free_minor(MINOR(joydev->dev.devt)); |
b126207c | 1024 | input_unregister_handle(handle); |
9657d75c | 1025 | put_device(&joydev->dev); |
1da177e4 LT |
1026 | } |
1027 | ||
66e66118 | 1028 | static const struct input_device_id joydev_ids[] = { |
1da177e4 | 1029 | { |
b126207c DT |
1030 | .flags = INPUT_DEVICE_ID_MATCH_EVBIT | |
1031 | INPUT_DEVICE_ID_MATCH_ABSBIT, | |
7b19ada2 JS |
1032 | .evbit = { BIT_MASK(EV_ABS) }, |
1033 | .absbit = { BIT_MASK(ABS_X) }, | |
1da177e4 | 1034 | }, |
9fb6de1b VR |
1035 | { |
1036 | .flags = INPUT_DEVICE_ID_MATCH_EVBIT | | |
1037 | INPUT_DEVICE_ID_MATCH_ABSBIT, | |
1038 | .evbit = { BIT_MASK(EV_ABS) }, | |
1039 | .absbit = { BIT_MASK(ABS_Z) }, | |
1040 | }, | |
1da177e4 | 1041 | { |
b126207c DT |
1042 | .flags = INPUT_DEVICE_ID_MATCH_EVBIT | |
1043 | INPUT_DEVICE_ID_MATCH_ABSBIT, | |
7b19ada2 JS |
1044 | .evbit = { BIT_MASK(EV_ABS) }, |
1045 | .absbit = { BIT_MASK(ABS_WHEEL) }, | |
1da177e4 LT |
1046 | }, |
1047 | { | |
b126207c DT |
1048 | .flags = INPUT_DEVICE_ID_MATCH_EVBIT | |
1049 | INPUT_DEVICE_ID_MATCH_ABSBIT, | |
7b19ada2 JS |
1050 | .evbit = { BIT_MASK(EV_ABS) }, |
1051 | .absbit = { BIT_MASK(ABS_THROTTLE) }, | |
1da177e4 | 1052 | }, |
26a6931b CF |
1053 | { |
1054 | .flags = INPUT_DEVICE_ID_MATCH_EVBIT | | |
1055 | INPUT_DEVICE_ID_MATCH_KEYBIT, | |
1056 | .evbit = { BIT_MASK(EV_KEY) }, | |
1057 | .keybit = {[BIT_WORD(BTN_JOYSTICK)] = BIT_MASK(BTN_JOYSTICK) }, | |
1058 | }, | |
1059 | { | |
1060 | .flags = INPUT_DEVICE_ID_MATCH_EVBIT | | |
1061 | INPUT_DEVICE_ID_MATCH_KEYBIT, | |
1062 | .evbit = { BIT_MASK(EV_KEY) }, | |
1063 | .keybit = { [BIT_WORD(BTN_GAMEPAD)] = BIT_MASK(BTN_GAMEPAD) }, | |
1064 | }, | |
1065 | { | |
1066 | .flags = INPUT_DEVICE_ID_MATCH_EVBIT | | |
1067 | INPUT_DEVICE_ID_MATCH_KEYBIT, | |
1068 | .evbit = { BIT_MASK(EV_KEY) }, | |
1069 | .keybit = { [BIT_WORD(BTN_TRIGGER_HAPPY)] = BIT_MASK(BTN_TRIGGER_HAPPY) }, | |
1070 | }, | |
1e0afb28 | 1071 | { } /* Terminating entry */ |
1da177e4 LT |
1072 | }; |
1073 | ||
1074 | MODULE_DEVICE_TABLE(input, joydev_ids); | |
1075 | ||
1076 | static struct input_handler joydev_handler = { | |
b126207c | 1077 | .event = joydev_event, |
0b7024ac | 1078 | .match = joydev_match, |
b126207c DT |
1079 | .connect = joydev_connect, |
1080 | .disconnect = joydev_disconnect, | |
7f8d4cad | 1081 | .legacy_minors = true, |
b126207c DT |
1082 | .minor = JOYDEV_MINOR_BASE, |
1083 | .name = "joydev", | |
1084 | .id_table = joydev_ids, | |
1da177e4 LT |
1085 | }; |
1086 | ||
1087 | static int __init joydev_init(void) | |
1088 | { | |
4263cf0f | 1089 | return input_register_handler(&joydev_handler); |
1da177e4 LT |
1090 | } |
1091 | ||
1092 | static void __exit joydev_exit(void) | |
1093 | { | |
1094 | input_unregister_handler(&joydev_handler); | |
1095 | } | |
1096 | ||
1097 | module_init(joydev_init); | |
1098 | module_exit(joydev_exit); |