Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 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> |
| 29 | #include <linux/devfs_fs_kernel.h> |
| 30 | |
| 31 | MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>"); |
| 32 | MODULE_DESCRIPTION("Joystick device interfaces"); |
| 33 | MODULE_SUPPORTED_DEVICE("input/js"); |
| 34 | MODULE_LICENSE("GPL"); |
| 35 | |
| 36 | #define JOYDEV_MINOR_BASE 0 |
| 37 | #define JOYDEV_MINORS 16 |
| 38 | #define JOYDEV_BUFFER_SIZE 64 |
| 39 | |
| 40 | #define MSECS(t) (1000 * ((t) / HZ) + 1000 * ((t) % HZ) / HZ) |
| 41 | |
| 42 | struct joydev { |
| 43 | int exist; |
| 44 | int open; |
| 45 | int minor; |
| 46 | char name[16]; |
| 47 | struct input_handle handle; |
| 48 | wait_queue_head_t wait; |
| 49 | struct list_head list; |
| 50 | 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 | |
| 61 | struct joydev_list { |
| 62 | struct js_event buffer[JOYDEV_BUFFER_SIZE]; |
| 63 | int head; |
| 64 | int tail; |
| 65 | int startup; |
| 66 | struct fasync_struct *fasync; |
| 67 | struct joydev *joydev; |
| 68 | struct list_head node; |
| 69 | }; |
| 70 | |
| 71 | static struct joydev *joydev_table[JOYDEV_MINORS]; |
| 72 | |
| 73 | static int joydev_correct(int value, struct js_corr *corr) |
| 74 | { |
| 75 | switch (corr->type) { |
| 76 | case JS_CORR_NONE: |
| 77 | break; |
| 78 | case JS_CORR_BROKEN: |
| 79 | value = value > corr->coef[0] ? (value < corr->coef[1] ? 0 : |
| 80 | ((corr->coef[3] * (value - corr->coef[1])) >> 14)) : |
| 81 | ((corr->coef[2] * (value - corr->coef[0])) >> 14); |
| 82 | break; |
| 83 | default: |
| 84 | return 0; |
| 85 | } |
| 86 | |
| 87 | if (value < -32767) return -32767; |
| 88 | if (value > 32767) return 32767; |
| 89 | |
| 90 | return value; |
| 91 | } |
| 92 | |
| 93 | static void joydev_event(struct input_handle *handle, unsigned int type, unsigned int code, int value) |
| 94 | { |
| 95 | struct joydev *joydev = handle->private; |
| 96 | struct joydev_list *list; |
| 97 | struct js_event event; |
| 98 | |
| 99 | switch (type) { |
| 100 | |
| 101 | case EV_KEY: |
| 102 | if (code < BTN_MISC || value == 2) return; |
| 103 | event.type = JS_EVENT_BUTTON; |
| 104 | event.number = joydev->keymap[code - BTN_MISC]; |
| 105 | event.value = value; |
| 106 | break; |
| 107 | |
| 108 | case EV_ABS: |
| 109 | event.type = JS_EVENT_AXIS; |
| 110 | event.number = joydev->absmap[code]; |
| 111 | event.value = joydev_correct(value, joydev->corr + event.number); |
| 112 | if (event.value == joydev->abs[event.number]) return; |
| 113 | joydev->abs[event.number] = event.value; |
| 114 | break; |
| 115 | |
| 116 | default: |
| 117 | return; |
| 118 | } |
| 119 | |
| 120 | event.time = MSECS(jiffies); |
| 121 | |
| 122 | list_for_each_entry(list, &joydev->list, node) { |
| 123 | |
| 124 | memcpy(list->buffer + list->head, &event, sizeof(struct js_event)); |
| 125 | |
| 126 | if (list->startup == joydev->nabs + joydev->nkey) |
| 127 | if (list->tail == (list->head = (list->head + 1) & (JOYDEV_BUFFER_SIZE - 1))) |
| 128 | list->startup = 0; |
| 129 | |
| 130 | kill_fasync(&list->fasync, SIGIO, POLL_IN); |
| 131 | } |
| 132 | |
| 133 | wake_up_interruptible(&joydev->wait); |
| 134 | } |
| 135 | |
| 136 | static int joydev_fasync(int fd, struct file *file, int on) |
| 137 | { |
| 138 | int retval; |
| 139 | struct joydev_list *list = file->private_data; |
| 140 | retval = fasync_helper(fd, file, on, &list->fasync); |
| 141 | return retval < 0 ? retval : 0; |
| 142 | } |
| 143 | |
| 144 | static void joydev_free(struct joydev *joydev) |
| 145 | { |
| 146 | joydev_table[joydev->minor] = NULL; |
| 147 | kfree(joydev); |
| 148 | } |
| 149 | |
| 150 | static int joydev_release(struct inode * inode, struct file * file) |
| 151 | { |
| 152 | struct joydev_list *list = file->private_data; |
| 153 | |
| 154 | joydev_fasync(-1, file, 0); |
| 155 | |
| 156 | list_del(&list->node); |
| 157 | |
| 158 | if (!--list->joydev->open) { |
| 159 | if (list->joydev->exist) |
| 160 | input_close_device(&list->joydev->handle); |
| 161 | else |
| 162 | joydev_free(list->joydev); |
| 163 | } |
| 164 | |
| 165 | kfree(list); |
| 166 | return 0; |
| 167 | } |
| 168 | |
| 169 | static int joydev_open(struct inode *inode, struct file *file) |
| 170 | { |
| 171 | struct joydev_list *list; |
| 172 | int i = iminor(inode) - JOYDEV_MINOR_BASE; |
| 173 | |
| 174 | if (i >= JOYDEV_MINORS || !joydev_table[i]) |
| 175 | return -ENODEV; |
| 176 | |
| 177 | if (!(list = kmalloc(sizeof(struct joydev_list), GFP_KERNEL))) |
| 178 | return -ENOMEM; |
| 179 | memset(list, 0, sizeof(struct joydev_list)); |
| 180 | |
| 181 | list->joydev = joydev_table[i]; |
| 182 | list_add_tail(&list->node, &joydev_table[i]->list); |
| 183 | file->private_data = list; |
| 184 | |
| 185 | if (!list->joydev->open++) |
| 186 | if (list->joydev->exist) |
| 187 | input_open_device(&list->joydev->handle); |
| 188 | |
| 189 | return 0; |
| 190 | } |
| 191 | |
| 192 | static ssize_t joydev_write(struct file * file, const char __user * buffer, size_t count, loff_t *ppos) |
| 193 | { |
| 194 | return -EINVAL; |
| 195 | } |
| 196 | |
| 197 | static ssize_t joydev_read(struct file *file, char __user *buf, size_t count, loff_t *ppos) |
| 198 | { |
| 199 | struct joydev_list *list = file->private_data; |
| 200 | struct joydev *joydev = list->joydev; |
| 201 | struct input_dev *input = joydev->handle.dev; |
| 202 | int retval = 0; |
| 203 | |
| 204 | if (!list->joydev->exist) |
| 205 | return -ENODEV; |
| 206 | |
| 207 | if (count < sizeof(struct js_event)) |
| 208 | return -EINVAL; |
| 209 | |
| 210 | if (count == sizeof(struct JS_DATA_TYPE)) { |
| 211 | |
| 212 | struct JS_DATA_TYPE data; |
| 213 | int i; |
| 214 | |
| 215 | for (data.buttons = i = 0; i < 32 && i < joydev->nkey; i++) |
| 216 | data.buttons |= test_bit(joydev->keypam[i], input->key) ? (1 << i) : 0; |
| 217 | data.x = (joydev->abs[0] / 256 + 128) >> joydev->glue.JS_CORR.x; |
| 218 | data.y = (joydev->abs[1] / 256 + 128) >> joydev->glue.JS_CORR.y; |
| 219 | |
| 220 | if (copy_to_user(buf, &data, sizeof(struct JS_DATA_TYPE))) |
| 221 | return -EFAULT; |
| 222 | |
| 223 | list->startup = 0; |
| 224 | list->tail = list->head; |
| 225 | |
| 226 | return sizeof(struct JS_DATA_TYPE); |
| 227 | } |
| 228 | |
| 229 | if (list->startup == joydev->nabs + joydev->nkey |
| 230 | && list->head == list->tail && (file->f_flags & O_NONBLOCK)) |
| 231 | return -EAGAIN; |
| 232 | |
| 233 | retval = wait_event_interruptible(list->joydev->wait, |
| 234 | !list->joydev->exist || |
| 235 | list->startup < joydev->nabs + joydev->nkey || |
| 236 | list->head != list->tail); |
| 237 | |
| 238 | if (retval) |
| 239 | return retval; |
| 240 | |
| 241 | if (!list->joydev->exist) |
| 242 | return -ENODEV; |
| 243 | |
| 244 | while (list->startup < joydev->nabs + joydev->nkey && retval + sizeof(struct js_event) <= count) { |
| 245 | |
| 246 | struct js_event event; |
| 247 | |
| 248 | event.time = MSECS(jiffies); |
| 249 | |
| 250 | if (list->startup < joydev->nkey) { |
| 251 | event.type = JS_EVENT_BUTTON | JS_EVENT_INIT; |
| 252 | event.number = list->startup; |
| 253 | event.value = !!test_bit(joydev->keypam[event.number], input->key); |
| 254 | } else { |
| 255 | event.type = JS_EVENT_AXIS | JS_EVENT_INIT; |
| 256 | event.number = list->startup - joydev->nkey; |
| 257 | event.value = joydev->abs[event.number]; |
| 258 | } |
| 259 | |
| 260 | if (copy_to_user(buf + retval, &event, sizeof(struct js_event))) |
| 261 | return -EFAULT; |
| 262 | |
| 263 | list->startup++; |
| 264 | retval += sizeof(struct js_event); |
| 265 | } |
| 266 | |
| 267 | while (list->head != list->tail && retval + sizeof(struct js_event) <= count) { |
| 268 | |
| 269 | if (copy_to_user(buf + retval, list->buffer + list->tail, sizeof(struct js_event))) |
| 270 | return -EFAULT; |
| 271 | |
| 272 | list->tail = (list->tail + 1) & (JOYDEV_BUFFER_SIZE - 1); |
| 273 | retval += sizeof(struct js_event); |
| 274 | } |
| 275 | |
| 276 | return retval; |
| 277 | } |
| 278 | |
| 279 | /* No kernel lock - fine */ |
| 280 | static unsigned int joydev_poll(struct file *file, poll_table *wait) |
| 281 | { |
| 282 | struct joydev_list *list = file->private_data; |
| 283 | poll_wait(file, &list->joydev->wait, wait); |
| 284 | return ((list->head != list->tail || list->startup < list->joydev->nabs + list->joydev->nkey) ? |
| 285 | (POLLIN | POLLRDNORM) : 0) | (list->joydev->exist ? 0 : (POLLHUP | POLLERR)); |
| 286 | } |
| 287 | |
| 288 | static int joydev_ioctl(struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg) |
| 289 | { |
| 290 | struct joydev_list *list = file->private_data; |
| 291 | struct joydev *joydev = list->joydev; |
| 292 | struct input_dev *dev = joydev->handle.dev; |
| 293 | void __user *argp = (void __user *)arg; |
| 294 | int i, j; |
| 295 | |
| 296 | if (!joydev->exist) return -ENODEV; |
| 297 | |
| 298 | switch (cmd) { |
| 299 | |
| 300 | case JS_SET_CAL: |
| 301 | return copy_from_user(&joydev->glue.JS_CORR, argp, |
| 302 | sizeof(struct JS_DATA_TYPE)) ? -EFAULT : 0; |
| 303 | case JS_GET_CAL: |
| 304 | return copy_to_user(argp, &joydev->glue.JS_CORR, |
| 305 | sizeof(struct JS_DATA_TYPE)) ? -EFAULT : 0; |
| 306 | case JS_SET_TIMEOUT: |
| 307 | return get_user(joydev->glue.JS_TIMEOUT, (int __user *) arg); |
| 308 | case JS_GET_TIMEOUT: |
| 309 | return put_user(joydev->glue.JS_TIMEOUT, (int __user *) arg); |
| 310 | case JS_SET_TIMELIMIT: |
| 311 | return get_user(joydev->glue.JS_TIMELIMIT, (long __user *) arg); |
| 312 | case JS_GET_TIMELIMIT: |
| 313 | return put_user(joydev->glue.JS_TIMELIMIT, (long __user *) arg); |
| 314 | case JS_SET_ALL: |
| 315 | return copy_from_user(&joydev->glue, argp, |
| 316 | sizeof(struct JS_DATA_SAVE_TYPE)) ? -EFAULT : 0; |
| 317 | case JS_GET_ALL: |
| 318 | return copy_to_user(argp, &joydev->glue, |
| 319 | sizeof(struct JS_DATA_SAVE_TYPE)) ? -EFAULT : 0; |
| 320 | |
| 321 | case JSIOCGVERSION: |
| 322 | return put_user(JS_VERSION, (__u32 __user *) arg); |
| 323 | case JSIOCGAXES: |
| 324 | return put_user(joydev->nabs, (__u8 __user *) arg); |
| 325 | case JSIOCGBUTTONS: |
| 326 | return put_user(joydev->nkey, (__u8 __user *) arg); |
| 327 | case JSIOCSCORR: |
| 328 | if (copy_from_user(joydev->corr, argp, |
| 329 | sizeof(struct js_corr) * joydev->nabs)) |
| 330 | return -EFAULT; |
| 331 | for (i = 0; i < joydev->nabs; i++) { |
| 332 | j = joydev->abspam[i]; |
| 333 | joydev->abs[i] = joydev_correct(dev->abs[j], joydev->corr + i); |
| 334 | } |
| 335 | return 0; |
| 336 | case JSIOCGCORR: |
| 337 | return copy_to_user(argp, joydev->corr, |
| 338 | sizeof(struct js_corr) * joydev->nabs) ? -EFAULT : 0; |
| 339 | case JSIOCSAXMAP: |
| 340 | if (copy_from_user(joydev->abspam, argp, sizeof(__u8) * (ABS_MAX + 1))) |
| 341 | return -EFAULT; |
| 342 | for (i = 0; i < joydev->nabs; i++) { |
| 343 | if (joydev->abspam[i] > ABS_MAX) return -EINVAL; |
| 344 | joydev->absmap[joydev->abspam[i]] = i; |
| 345 | } |
| 346 | return 0; |
| 347 | case JSIOCGAXMAP: |
| 348 | return copy_to_user(argp, joydev->abspam, |
| 349 | sizeof(__u8) * (ABS_MAX + 1)) ? -EFAULT : 0; |
| 350 | case JSIOCSBTNMAP: |
| 351 | if (copy_from_user(joydev->keypam, argp, sizeof(__u16) * (KEY_MAX - BTN_MISC + 1))) |
| 352 | return -EFAULT; |
| 353 | for (i = 0; i < joydev->nkey; i++) { |
| 354 | if (joydev->keypam[i] > KEY_MAX || joydev->keypam[i] < BTN_MISC) return -EINVAL; |
| 355 | joydev->keymap[joydev->keypam[i] - BTN_MISC] = i; |
| 356 | } |
| 357 | return 0; |
| 358 | case JSIOCGBTNMAP: |
| 359 | return copy_to_user(argp, joydev->keypam, |
| 360 | sizeof(__u16) * (KEY_MAX - BTN_MISC + 1)) ? -EFAULT : 0; |
| 361 | default: |
| 362 | if ((cmd & ~(_IOC_SIZEMASK << _IOC_SIZESHIFT)) == JSIOCGNAME(0)) { |
| 363 | int len; |
| 364 | if (!dev->name) return 0; |
| 365 | len = strlen(dev->name) + 1; |
| 366 | if (len > _IOC_SIZE(cmd)) len = _IOC_SIZE(cmd); |
| 367 | if (copy_to_user(argp, dev->name, len)) return -EFAULT; |
| 368 | return len; |
| 369 | } |
| 370 | } |
| 371 | return -EINVAL; |
| 372 | } |
| 373 | |
| 374 | static struct file_operations joydev_fops = { |
| 375 | .owner = THIS_MODULE, |
| 376 | .read = joydev_read, |
| 377 | .write = joydev_write, |
| 378 | .poll = joydev_poll, |
| 379 | .open = joydev_open, |
| 380 | .release = joydev_release, |
| 381 | .ioctl = joydev_ioctl, |
| 382 | .fasync = joydev_fasync, |
| 383 | }; |
| 384 | |
| 385 | static struct input_handle *joydev_connect(struct input_handler *handler, struct input_dev *dev, struct input_device_id *id) |
| 386 | { |
| 387 | struct joydev *joydev; |
| 388 | int i, j, t, minor; |
| 389 | |
| 390 | for (minor = 0; minor < JOYDEV_MINORS && joydev_table[minor]; minor++); |
| 391 | if (minor == JOYDEV_MINORS) { |
| 392 | printk(KERN_ERR "joydev: no more free joydev devices\n"); |
| 393 | return NULL; |
| 394 | } |
| 395 | |
| 396 | if (!(joydev = kmalloc(sizeof(struct joydev), GFP_KERNEL))) |
| 397 | return NULL; |
| 398 | memset(joydev, 0, sizeof(struct joydev)); |
| 399 | |
| 400 | INIT_LIST_HEAD(&joydev->list); |
| 401 | init_waitqueue_head(&joydev->wait); |
| 402 | |
| 403 | joydev->minor = minor; |
| 404 | joydev->exist = 1; |
| 405 | joydev->handle.dev = dev; |
| 406 | joydev->handle.name = joydev->name; |
| 407 | joydev->handle.handler = handler; |
| 408 | joydev->handle.private = joydev; |
| 409 | sprintf(joydev->name, "js%d", minor); |
| 410 | |
| 411 | for (i = 0; i < ABS_MAX + 1; i++) |
| 412 | if (test_bit(i, dev->absbit)) { |
| 413 | joydev->absmap[i] = joydev->nabs; |
| 414 | joydev->abspam[joydev->nabs] = i; |
| 415 | joydev->nabs++; |
| 416 | } |
| 417 | |
| 418 | for (i = BTN_JOYSTICK - BTN_MISC; i < KEY_MAX - BTN_MISC + 1; i++) |
| 419 | if (test_bit(i + BTN_MISC, dev->keybit)) { |
| 420 | joydev->keymap[i] = joydev->nkey; |
| 421 | joydev->keypam[joydev->nkey] = i + BTN_MISC; |
| 422 | joydev->nkey++; |
| 423 | } |
| 424 | |
Vojtech Pavlik | f24949e | 2005-05-28 02:11:49 -0500 | [diff] [blame^] | 425 | for (i = 0; i < BTN_JOYSTICK - BTN_MISC; i++) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 426 | if (test_bit(i + BTN_MISC, dev->keybit)) { |
| 427 | joydev->keymap[i] = joydev->nkey; |
| 428 | joydev->keypam[joydev->nkey] = i + BTN_MISC; |
| 429 | joydev->nkey++; |
| 430 | } |
| 431 | |
| 432 | for (i = 0; i < joydev->nabs; i++) { |
| 433 | j = joydev->abspam[i]; |
| 434 | if (dev->absmax[j] == dev->absmin[j]) { |
| 435 | joydev->corr[i].type = JS_CORR_NONE; |
| 436 | joydev->abs[i] = dev->abs[j]; |
| 437 | continue; |
| 438 | } |
| 439 | joydev->corr[i].type = JS_CORR_BROKEN; |
| 440 | joydev->corr[i].prec = dev->absfuzz[j]; |
| 441 | joydev->corr[i].coef[0] = (dev->absmax[j] + dev->absmin[j]) / 2 - dev->absflat[j]; |
| 442 | joydev->corr[i].coef[1] = (dev->absmax[j] + dev->absmin[j]) / 2 + dev->absflat[j]; |
| 443 | if (!(t = ((dev->absmax[j] - dev->absmin[j]) / 2 - 2 * dev->absflat[j]))) |
| 444 | continue; |
| 445 | joydev->corr[i].coef[2] = (1 << 29) / t; |
| 446 | joydev->corr[i].coef[3] = (1 << 29) / t; |
| 447 | |
| 448 | joydev->abs[i] = joydev_correct(dev->abs[j], joydev->corr + i); |
| 449 | } |
| 450 | |
| 451 | joydev_table[minor] = joydev; |
| 452 | |
| 453 | devfs_mk_cdev(MKDEV(INPUT_MAJOR, JOYDEV_MINOR_BASE + minor), |
| 454 | S_IFCHR|S_IRUGO|S_IWUSR, "input/js%d", minor); |
| 455 | class_simple_device_add(input_class, |
| 456 | MKDEV(INPUT_MAJOR, JOYDEV_MINOR_BASE + minor), |
| 457 | dev->dev, "js%d", minor); |
| 458 | |
| 459 | return &joydev->handle; |
| 460 | } |
| 461 | |
| 462 | static void joydev_disconnect(struct input_handle *handle) |
| 463 | { |
| 464 | struct joydev *joydev = handle->private; |
| 465 | struct joydev_list *list; |
| 466 | |
| 467 | class_simple_device_remove(MKDEV(INPUT_MAJOR, JOYDEV_MINOR_BASE + joydev->minor)); |
| 468 | devfs_remove("input/js%d", joydev->minor); |
| 469 | joydev->exist = 0; |
| 470 | |
| 471 | if (joydev->open) { |
| 472 | input_close_device(handle); |
| 473 | wake_up_interruptible(&joydev->wait); |
| 474 | list_for_each_entry(list, &joydev->list, node) |
| 475 | kill_fasync(&list->fasync, SIGIO, POLL_HUP); |
| 476 | } else |
| 477 | joydev_free(joydev); |
| 478 | } |
| 479 | |
| 480 | static struct input_device_id joydev_blacklist[] = { |
| 481 | { |
| 482 | .flags = INPUT_DEVICE_ID_MATCH_EVBIT | INPUT_DEVICE_ID_MATCH_KEYBIT, |
| 483 | .evbit = { BIT(EV_KEY) }, |
| 484 | .keybit = { [LONG(BTN_TOUCH)] = BIT(BTN_TOUCH) }, |
| 485 | }, /* Avoid itouchpads, touchscreens and tablets */ |
| 486 | { }, /* Terminating entry */ |
| 487 | }; |
| 488 | |
| 489 | static struct input_device_id joydev_ids[] = { |
| 490 | { |
| 491 | .flags = INPUT_DEVICE_ID_MATCH_EVBIT | INPUT_DEVICE_ID_MATCH_ABSBIT, |
| 492 | .evbit = { BIT(EV_ABS) }, |
| 493 | .absbit = { BIT(ABS_X) }, |
| 494 | }, |
| 495 | { |
| 496 | .flags = INPUT_DEVICE_ID_MATCH_EVBIT | INPUT_DEVICE_ID_MATCH_ABSBIT, |
| 497 | .evbit = { BIT(EV_ABS) }, |
| 498 | .absbit = { BIT(ABS_WHEEL) }, |
| 499 | }, |
| 500 | { |
| 501 | .flags = INPUT_DEVICE_ID_MATCH_EVBIT | INPUT_DEVICE_ID_MATCH_ABSBIT, |
| 502 | .evbit = { BIT(EV_ABS) }, |
| 503 | .absbit = { BIT(ABS_THROTTLE) }, |
| 504 | }, |
| 505 | { }, /* Terminating entry */ |
| 506 | }; |
| 507 | |
| 508 | MODULE_DEVICE_TABLE(input, joydev_ids); |
| 509 | |
| 510 | static struct input_handler joydev_handler = { |
| 511 | .event = joydev_event, |
| 512 | .connect = joydev_connect, |
| 513 | .disconnect = joydev_disconnect, |
| 514 | .fops = &joydev_fops, |
| 515 | .minor = JOYDEV_MINOR_BASE, |
| 516 | .name = "joydev", |
| 517 | .id_table = joydev_ids, |
| 518 | .blacklist = joydev_blacklist, |
| 519 | }; |
| 520 | |
| 521 | static int __init joydev_init(void) |
| 522 | { |
| 523 | input_register_handler(&joydev_handler); |
| 524 | return 0; |
| 525 | } |
| 526 | |
| 527 | static void __exit joydev_exit(void) |
| 528 | { |
| 529 | input_unregister_handler(&joydev_handler); |
| 530 | } |
| 531 | |
| 532 | module_init(joydev_init); |
| 533 | module_exit(joydev_exit); |