Bernhard Seibold | c1dcad2d | 2012-02-15 13:40:43 +0100 | [diff] [blame] | 1 | /* |
| 2 | * HID driver for Lenovo ThinkPad USB Keyboard with TrackPoint |
| 3 | * |
| 4 | * Copyright (c) 2012 Bernhard Seibold |
| 5 | */ |
| 6 | |
| 7 | /* |
| 8 | * This program is free software; you can redistribute it and/or modify it |
| 9 | * under the terms of the GNU General Public License as published by the Free |
| 10 | * Software Foundation; either version 2 of the License, or (at your option) |
| 11 | * any later version. |
| 12 | */ |
| 13 | |
| 14 | #include <linux/module.h> |
| 15 | #include <linux/sysfs.h> |
| 16 | #include <linux/device.h> |
| 17 | #include <linux/usb.h> |
| 18 | #include <linux/hid.h> |
| 19 | #include <linux/input.h> |
| 20 | #include <linux/leds.h> |
| 21 | #include "usbhid/usbhid.h" |
| 22 | |
| 23 | #include "hid-ids.h" |
| 24 | |
| 25 | /* This is only used for the trackpoint part of the driver, hence _tp */ |
| 26 | struct tpkbd_data_pointer { |
| 27 | int led_state; |
| 28 | struct led_classdev led_mute; |
| 29 | struct led_classdev led_micmute; |
| 30 | int press_to_select; |
| 31 | int dragging; |
| 32 | int release_to_select; |
| 33 | int select_right; |
| 34 | int sensitivity; |
| 35 | int press_speed; |
| 36 | }; |
| 37 | |
| 38 | #define map_key_clear(c) hid_map_usage_clear(hi, usage, bit, max, EV_KEY, (c)) |
| 39 | |
| 40 | static int tpkbd_input_mapping(struct hid_device *hdev, |
| 41 | struct hid_input *hi, struct hid_field *field, |
| 42 | struct hid_usage *usage, unsigned long **bit, int *max) |
| 43 | { |
| 44 | struct usbhid_device *uhdev; |
| 45 | |
| 46 | uhdev = (struct usbhid_device *) hdev->driver_data; |
| 47 | if (uhdev->ifnum == 1 && usage->hid == (HID_UP_BUTTON | 0x0010)) { |
| 48 | map_key_clear(KEY_MICMUTE); |
| 49 | return 1; |
| 50 | } |
| 51 | return 0; |
| 52 | } |
| 53 | |
| 54 | #undef map_key_clear |
| 55 | |
| 56 | static int tpkbd_features_set(struct hid_device *hdev) |
| 57 | { |
| 58 | struct hid_report *report; |
| 59 | struct tpkbd_data_pointer *data_pointer; |
| 60 | |
| 61 | data_pointer = (struct tpkbd_data_pointer *) hid_get_drvdata(hdev); |
| 62 | report = hdev->report_enum[HID_FEATURE_REPORT].report_id_hash[4]; |
| 63 | |
| 64 | report->field[0]->value[0] = data_pointer->press_to_select ? 0x01 : 0x02; |
| 65 | report->field[0]->value[0] |= data_pointer->dragging ? 0x04 : 0x08; |
| 66 | report->field[0]->value[0] |= data_pointer->release_to_select ? 0x10 : 0x20; |
| 67 | report->field[0]->value[0] |= data_pointer->select_right ? 0x80 : 0x40; |
| 68 | report->field[1]->value[0] = 0x03; // unknown setting, imitate windows driver |
| 69 | report->field[2]->value[0] = data_pointer->sensitivity; |
| 70 | report->field[3]->value[0] = data_pointer->press_speed; |
| 71 | |
| 72 | usbhid_submit_report(hdev, report, USB_DIR_OUT); |
| 73 | return 0; |
| 74 | } |
| 75 | |
| 76 | static ssize_t pointer_press_to_select_show(struct device *dev, |
| 77 | struct device_attribute *attr, |
| 78 | char *buf) |
| 79 | { |
| 80 | struct hid_device *hdev; |
| 81 | struct tpkbd_data_pointer *data_pointer; |
| 82 | |
| 83 | hdev = container_of(dev, struct hid_device, dev); |
| 84 | if (hdev == NULL) |
| 85 | return -ENODEV; |
| 86 | |
| 87 | data_pointer = (struct tpkbd_data_pointer *) hid_get_drvdata(hdev); |
| 88 | |
| 89 | return snprintf(buf, PAGE_SIZE, "%u\n", data_pointer->press_to_select); |
| 90 | } |
| 91 | |
| 92 | static ssize_t pointer_press_to_select_store(struct device *dev, |
| 93 | struct device_attribute *attr, |
| 94 | const char *buf, |
| 95 | size_t count) |
| 96 | { |
| 97 | struct hid_device *hdev; |
| 98 | struct tpkbd_data_pointer *data_pointer; |
| 99 | int value; |
| 100 | |
| 101 | hdev = container_of(dev, struct hid_device, dev); |
| 102 | if (hdev == NULL) |
| 103 | return -ENODEV; |
| 104 | |
| 105 | data_pointer = (struct tpkbd_data_pointer *) hid_get_drvdata(hdev); |
| 106 | |
| 107 | if (kstrtoint(buf, 10, &value)) |
| 108 | return -EINVAL; |
| 109 | if (value < 0 || value > 1) |
| 110 | return -EINVAL; |
| 111 | |
| 112 | data_pointer->press_to_select = value; |
| 113 | tpkbd_features_set(hdev); |
| 114 | |
| 115 | return count; |
| 116 | } |
| 117 | |
| 118 | static ssize_t pointer_dragging_show(struct device *dev, |
| 119 | struct device_attribute *attr, |
| 120 | char *buf) |
| 121 | { |
| 122 | struct hid_device *hdev; |
| 123 | struct tpkbd_data_pointer *data_pointer; |
| 124 | |
| 125 | hdev = container_of(dev, struct hid_device, dev); |
| 126 | if (hdev == NULL) |
| 127 | return -ENODEV; |
| 128 | |
| 129 | data_pointer = (struct tpkbd_data_pointer *) hid_get_drvdata(hdev); |
| 130 | |
| 131 | return snprintf(buf, PAGE_SIZE, "%u\n", data_pointer->dragging); |
| 132 | } |
| 133 | |
| 134 | static ssize_t pointer_dragging_store(struct device *dev, |
| 135 | struct device_attribute *attr, |
| 136 | const char *buf, |
| 137 | size_t count) |
| 138 | { |
| 139 | struct hid_device *hdev; |
| 140 | struct tpkbd_data_pointer *data_pointer; |
| 141 | int value; |
| 142 | |
| 143 | hdev = container_of(dev, struct hid_device, dev); |
| 144 | if (hdev == NULL) |
| 145 | return -ENODEV; |
| 146 | |
| 147 | data_pointer = (struct tpkbd_data_pointer *) hid_get_drvdata(hdev); |
| 148 | |
| 149 | if (kstrtoint(buf, 10, &value)) |
| 150 | return -EINVAL; |
| 151 | if (value < 0 || value > 1) |
| 152 | return -EINVAL; |
| 153 | |
| 154 | data_pointer->dragging = value; |
| 155 | tpkbd_features_set(hdev); |
| 156 | |
| 157 | return count; |
| 158 | } |
| 159 | |
| 160 | static ssize_t pointer_release_to_select_show(struct device *dev, |
| 161 | struct device_attribute *attr, |
| 162 | char *buf) |
| 163 | { |
| 164 | struct hid_device *hdev; |
| 165 | struct tpkbd_data_pointer *data_pointer; |
| 166 | |
| 167 | hdev = container_of(dev, struct hid_device, dev); |
| 168 | if (hdev == NULL) |
| 169 | return -ENODEV; |
| 170 | |
| 171 | data_pointer = (struct tpkbd_data_pointer *) hid_get_drvdata(hdev); |
| 172 | |
| 173 | return snprintf(buf, PAGE_SIZE, "%u\n", data_pointer->release_to_select); |
| 174 | } |
| 175 | |
| 176 | static ssize_t pointer_release_to_select_store(struct device *dev, |
| 177 | struct device_attribute *attr, |
| 178 | const char *buf, |
| 179 | size_t count) |
| 180 | { |
| 181 | struct hid_device *hdev; |
| 182 | struct tpkbd_data_pointer *data_pointer; |
| 183 | int value; |
| 184 | |
| 185 | hdev = container_of(dev, struct hid_device, dev); |
| 186 | if (hdev == NULL) |
| 187 | return -ENODEV; |
| 188 | |
| 189 | data_pointer = (struct tpkbd_data_pointer *) hid_get_drvdata(hdev); |
| 190 | |
| 191 | if (kstrtoint(buf, 10, &value)) |
| 192 | return -EINVAL; |
| 193 | if (value < 0 || value > 1) |
| 194 | return -EINVAL; |
| 195 | |
| 196 | data_pointer->release_to_select = value; |
| 197 | tpkbd_features_set(hdev); |
| 198 | |
| 199 | return count; |
| 200 | } |
| 201 | |
| 202 | static ssize_t pointer_select_right_show(struct device *dev, |
| 203 | struct device_attribute *attr, |
| 204 | char *buf) |
| 205 | { |
| 206 | struct hid_device *hdev; |
| 207 | struct tpkbd_data_pointer *data_pointer; |
| 208 | |
| 209 | hdev = container_of(dev, struct hid_device, dev); |
| 210 | if (hdev == NULL) |
| 211 | return -ENODEV; |
| 212 | |
| 213 | data_pointer = (struct tpkbd_data_pointer *) hid_get_drvdata(hdev); |
| 214 | |
| 215 | return snprintf(buf, PAGE_SIZE, "%u\n", data_pointer->select_right); |
| 216 | } |
| 217 | |
| 218 | static ssize_t pointer_select_right_store(struct device *dev, |
| 219 | struct device_attribute *attr, |
| 220 | const char *buf, |
| 221 | size_t count) |
| 222 | { |
| 223 | struct hid_device *hdev; |
| 224 | struct tpkbd_data_pointer *data_pointer; |
| 225 | int value; |
| 226 | |
| 227 | hdev = container_of(dev, struct hid_device, dev); |
| 228 | if (hdev == NULL) |
| 229 | return -ENODEV; |
| 230 | |
| 231 | data_pointer = (struct tpkbd_data_pointer *) hid_get_drvdata(hdev); |
| 232 | |
| 233 | if (kstrtoint(buf, 10, &value)) |
| 234 | return -EINVAL; |
| 235 | if (value < 0 || value > 1) |
| 236 | return -EINVAL; |
| 237 | |
| 238 | data_pointer->select_right = value; |
| 239 | tpkbd_features_set(hdev); |
| 240 | |
| 241 | return count; |
| 242 | } |
| 243 | |
| 244 | static ssize_t pointer_sensitivity_show(struct device *dev, |
| 245 | struct device_attribute *attr, |
| 246 | char *buf) |
| 247 | { |
| 248 | struct hid_device *hdev; |
| 249 | struct tpkbd_data_pointer *data_pointer; |
| 250 | |
| 251 | hdev = container_of(dev, struct hid_device, dev); |
| 252 | if (hdev == NULL) |
| 253 | return -ENODEV; |
| 254 | |
| 255 | data_pointer = (struct tpkbd_data_pointer *) hid_get_drvdata(hdev); |
| 256 | |
| 257 | return snprintf(buf, PAGE_SIZE, "%u\n", |
| 258 | data_pointer->sensitivity); |
| 259 | } |
| 260 | |
| 261 | static ssize_t pointer_sensitivity_store(struct device *dev, |
| 262 | struct device_attribute *attr, |
| 263 | const char *buf, |
| 264 | size_t count) |
| 265 | { |
| 266 | struct hid_device *hdev; |
| 267 | struct tpkbd_data_pointer *data_pointer; |
| 268 | int value; |
| 269 | |
| 270 | hdev = container_of(dev, struct hid_device, dev); |
| 271 | if (hdev == NULL) |
| 272 | return -ENODEV; |
| 273 | |
| 274 | data_pointer = (struct tpkbd_data_pointer *) hid_get_drvdata(hdev); |
| 275 | |
| 276 | if (kstrtoint(buf, 10, &value) || value < 1 || value > 255) |
| 277 | return -EINVAL; |
| 278 | |
| 279 | data_pointer->sensitivity = value; |
| 280 | tpkbd_features_set(hdev); |
| 281 | |
| 282 | return count; |
| 283 | } |
| 284 | |
| 285 | static ssize_t pointer_press_speed_show(struct device *dev, |
| 286 | struct device_attribute *attr, |
| 287 | char *buf) |
| 288 | { |
| 289 | struct hid_device *hdev; |
| 290 | struct tpkbd_data_pointer *data_pointer; |
| 291 | |
| 292 | hdev = container_of(dev, struct hid_device, dev); |
| 293 | if (hdev == NULL) |
| 294 | return -ENODEV; |
| 295 | |
| 296 | data_pointer = (struct tpkbd_data_pointer *) hid_get_drvdata(hdev); |
| 297 | |
| 298 | return snprintf(buf, PAGE_SIZE, "%u\n", |
| 299 | data_pointer->press_speed); |
| 300 | } |
| 301 | |
| 302 | static ssize_t pointer_press_speed_store(struct device *dev, |
| 303 | struct device_attribute *attr, |
| 304 | const char *buf, |
| 305 | size_t count) |
| 306 | { |
| 307 | struct hid_device *hdev; |
| 308 | struct tpkbd_data_pointer *data_pointer; |
| 309 | int value; |
| 310 | |
| 311 | hdev = container_of(dev, struct hid_device, dev); |
| 312 | if (hdev == NULL) |
| 313 | return -ENODEV; |
| 314 | |
| 315 | data_pointer = (struct tpkbd_data_pointer *) hid_get_drvdata(hdev); |
| 316 | |
| 317 | if (kstrtoint(buf, 10, &value) || value < 1 || value > 255) |
| 318 | return -EINVAL; |
| 319 | |
| 320 | data_pointer->press_speed = value; |
| 321 | tpkbd_features_set(hdev); |
| 322 | |
| 323 | return count; |
| 324 | } |
| 325 | |
| 326 | static struct device_attribute dev_attr_pointer_press_to_select = |
| 327 | __ATTR(press_to_select, S_IWUSR | S_IRUGO, |
| 328 | pointer_press_to_select_show, |
| 329 | pointer_press_to_select_store); |
| 330 | |
| 331 | static struct device_attribute dev_attr_pointer_dragging = |
| 332 | __ATTR(dragging, S_IWUSR | S_IRUGO, |
| 333 | pointer_dragging_show, |
| 334 | pointer_dragging_store); |
| 335 | |
| 336 | static struct device_attribute dev_attr_pointer_release_to_select = |
| 337 | __ATTR(release_to_select, S_IWUSR | S_IRUGO, |
| 338 | pointer_release_to_select_show, |
| 339 | pointer_release_to_select_store); |
| 340 | |
| 341 | static struct device_attribute dev_attr_pointer_select_right = |
| 342 | __ATTR(select_right, S_IWUSR | S_IRUGO, |
| 343 | pointer_select_right_show, |
| 344 | pointer_select_right_store); |
| 345 | |
| 346 | static struct device_attribute dev_attr_pointer_sensitivity = |
| 347 | __ATTR(sensitivity, S_IWUSR | S_IRUGO, |
| 348 | pointer_sensitivity_show, |
| 349 | pointer_sensitivity_store); |
| 350 | |
| 351 | static struct device_attribute dev_attr_pointer_press_speed = |
| 352 | __ATTR(press_speed, S_IWUSR | S_IRUGO, |
| 353 | pointer_press_speed_show, |
| 354 | pointer_press_speed_store); |
| 355 | |
| 356 | static struct attribute *tpkbd_attributes_pointer[] = { |
| 357 | &dev_attr_pointer_press_to_select.attr, |
| 358 | &dev_attr_pointer_dragging.attr, |
| 359 | &dev_attr_pointer_release_to_select.attr, |
| 360 | &dev_attr_pointer_select_right.attr, |
| 361 | &dev_attr_pointer_sensitivity.attr, |
| 362 | &dev_attr_pointer_press_speed.attr, |
| 363 | NULL |
| 364 | }; |
| 365 | |
| 366 | static const struct attribute_group tpkbd_attr_group_pointer = { |
| 367 | .attrs = tpkbd_attributes_pointer, |
| 368 | }; |
| 369 | |
| 370 | static enum led_brightness tpkbd_led_brightness_get( |
| 371 | struct led_classdev *led_cdev) |
| 372 | { |
| 373 | struct device *dev; |
| 374 | struct hid_device *hdev; |
| 375 | struct tpkbd_data_pointer *data_pointer; |
| 376 | int led_nr = 0; |
| 377 | |
| 378 | dev = led_cdev->dev->parent; |
| 379 | hdev = container_of(dev, struct hid_device, dev); |
| 380 | data_pointer = (struct tpkbd_data_pointer *) hid_get_drvdata(hdev); |
| 381 | |
| 382 | if (led_cdev == &data_pointer->led_micmute) |
| 383 | led_nr = 1; |
| 384 | |
| 385 | return data_pointer->led_state & (1 << led_nr) |
| 386 | ? LED_FULL |
| 387 | : LED_OFF; |
| 388 | } |
| 389 | |
| 390 | static void tpkbd_led_brightness_set(struct led_classdev *led_cdev, |
| 391 | enum led_brightness value) |
| 392 | { |
| 393 | struct device *dev; |
| 394 | struct hid_device *hdev; |
| 395 | struct hid_report *report; |
| 396 | struct tpkbd_data_pointer *data_pointer; |
| 397 | int led_nr = 0; |
| 398 | |
| 399 | dev = led_cdev->dev->parent; |
| 400 | hdev = container_of(dev, struct hid_device, dev); |
| 401 | data_pointer = (struct tpkbd_data_pointer *) hid_get_drvdata(hdev); |
| 402 | |
| 403 | if (led_cdev == &data_pointer->led_micmute) |
| 404 | led_nr = 1; |
| 405 | |
| 406 | if (value == LED_OFF) |
| 407 | data_pointer->led_state &= ~(1 << led_nr); |
| 408 | else |
| 409 | data_pointer->led_state |= 1 << led_nr; |
| 410 | |
| 411 | report = hdev->report_enum[HID_OUTPUT_REPORT].report_id_hash[3]; |
| 412 | report->field[0]->value[0] = (data_pointer->led_state >> 0) & 1; |
| 413 | report->field[0]->value[1] = (data_pointer->led_state >> 1) & 1; |
| 414 | usbhid_submit_report(hdev, report, USB_DIR_OUT); |
| 415 | } |
| 416 | |
| 417 | static int tpkbd_probe_tp(struct hid_device *hdev) |
| 418 | { |
| 419 | struct device *dev = &hdev->dev; |
| 420 | struct tpkbd_data_pointer *data_pointer; |
| 421 | size_t name_sz = strlen(dev_name(dev)) + 16; |
| 422 | char *name_mute, *name_micmute; |
| 423 | int ret; |
| 424 | |
| 425 | if (sysfs_create_group(&hdev->dev.kobj, |
| 426 | &tpkbd_attr_group_pointer)) { |
| 427 | hid_warn(hdev, "Could not create sysfs group\n"); |
| 428 | } |
| 429 | |
| 430 | data_pointer = kzalloc(sizeof(struct tpkbd_data_pointer), GFP_KERNEL); |
| 431 | if (data_pointer == NULL) { |
| 432 | hid_err(hdev, "Could not allocate memory for driver data\n"); |
| 433 | return -ENOMEM; |
| 434 | } |
| 435 | |
| 436 | // set same default values as windows driver |
| 437 | data_pointer->sensitivity = 0xa0; |
| 438 | data_pointer->press_speed = 0x38; |
| 439 | |
| 440 | name_mute = kzalloc(name_sz, GFP_KERNEL); |
| 441 | if (name_mute == NULL) { |
| 442 | hid_err(hdev, "Could not allocate memory for led data\n"); |
| 443 | ret = -ENOMEM; |
| 444 | goto err; |
| 445 | } |
| 446 | snprintf(name_mute, name_sz, "%s:amber:mute", dev_name(dev)); |
| 447 | |
| 448 | name_micmute = kzalloc(name_sz, GFP_KERNEL); |
| 449 | if (name_micmute == NULL) { |
| 450 | hid_err(hdev, "Could not allocate memory for led data\n"); |
| 451 | ret = -ENOMEM; |
| 452 | goto err2; |
| 453 | } |
| 454 | snprintf(name_micmute, name_sz, "%s:amber:micmute", dev_name(dev)); |
| 455 | |
| 456 | hid_set_drvdata(hdev, data_pointer); |
| 457 | |
| 458 | data_pointer->led_mute.name = name_mute; |
| 459 | data_pointer->led_mute.brightness_get = tpkbd_led_brightness_get; |
| 460 | data_pointer->led_mute.brightness_set = tpkbd_led_brightness_set; |
| 461 | data_pointer->led_mute.dev = dev; |
| 462 | led_classdev_register(dev, &data_pointer->led_mute); |
| 463 | |
| 464 | data_pointer->led_micmute.name = name_micmute; |
| 465 | data_pointer->led_micmute.brightness_get = tpkbd_led_brightness_get; |
| 466 | data_pointer->led_micmute.brightness_set = tpkbd_led_brightness_set; |
| 467 | data_pointer->led_micmute.dev = dev; |
| 468 | led_classdev_register(dev, &data_pointer->led_micmute); |
| 469 | |
| 470 | tpkbd_features_set(hdev); |
| 471 | |
| 472 | return 0; |
| 473 | |
| 474 | err2: |
| 475 | kfree(name_mute); |
| 476 | err: |
| 477 | kfree(data_pointer); |
| 478 | return ret; |
| 479 | } |
| 480 | |
| 481 | static int tpkbd_probe(struct hid_device *hdev, |
| 482 | const struct hid_device_id *id) |
| 483 | { |
| 484 | int ret; |
| 485 | struct usbhid_device *uhdev; |
| 486 | |
| 487 | ret = hid_parse(hdev); |
| 488 | if (ret) { |
| 489 | hid_err(hdev, "hid_parse failed\n"); |
| 490 | goto err_free; |
| 491 | } |
| 492 | |
| 493 | ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT); |
| 494 | if (ret) { |
| 495 | hid_err(hdev, "hid_hw_start failed\n"); |
| 496 | goto err_free; |
| 497 | } |
| 498 | |
| 499 | uhdev = (struct usbhid_device *) hdev->driver_data; |
| 500 | |
| 501 | if (uhdev->ifnum == 1) |
| 502 | return tpkbd_probe_tp(hdev); |
| 503 | |
| 504 | return 0; |
| 505 | err_free: |
| 506 | return ret; |
| 507 | } |
| 508 | |
| 509 | static void tpkbd_remove_tp(struct hid_device *hdev) |
| 510 | { |
| 511 | struct tpkbd_data_pointer *data_pointer; |
| 512 | |
| 513 | sysfs_remove_group(&hdev->dev.kobj, |
| 514 | &tpkbd_attr_group_pointer); |
| 515 | |
| 516 | data_pointer = (struct tpkbd_data_pointer *) hid_get_drvdata(hdev); |
| 517 | |
| 518 | led_classdev_unregister(&data_pointer->led_micmute); |
| 519 | led_classdev_unregister(&data_pointer->led_mute); |
| 520 | |
| 521 | hid_set_drvdata(hdev, NULL); |
| 522 | kfree(data_pointer); |
| 523 | } |
| 524 | |
| 525 | static void tpkbd_remove(struct hid_device *hdev) |
| 526 | { |
| 527 | struct usbhid_device *uhdev; |
| 528 | |
| 529 | uhdev = (struct usbhid_device *) hdev->driver_data; |
| 530 | if (uhdev->ifnum == 1) |
| 531 | tpkbd_remove_tp(hdev); |
| 532 | |
| 533 | hid_hw_stop(hdev); |
| 534 | } |
| 535 | |
| 536 | static const struct hid_device_id tpkbd_devices[] = { |
| 537 | { HID_USB_DEVICE(USB_VENDOR_ID_LENOVO, USB_DEVICE_ID_LENOVO_TPKBD) }, |
| 538 | { } |
| 539 | }; |
| 540 | |
| 541 | MODULE_DEVICE_TABLE(hid, tpkbd_devices); |
| 542 | |
| 543 | static struct hid_driver tpkbd_driver = { |
| 544 | .name = "lenovo_tpkbd", |
| 545 | .id_table = tpkbd_devices, |
| 546 | .input_mapping = tpkbd_input_mapping, |
| 547 | .probe = tpkbd_probe, |
| 548 | .remove = tpkbd_remove, |
| 549 | }; |
| 550 | |
| 551 | static int __init tpkbd_init(void) |
| 552 | { |
| 553 | return hid_register_driver(&tpkbd_driver); |
| 554 | } |
| 555 | |
| 556 | static void __exit tpkbd_exit(void) |
| 557 | { |
| 558 | hid_unregister_driver(&tpkbd_driver); |
| 559 | } |
| 560 | |
| 561 | module_init(tpkbd_init); |
| 562 | module_exit(tpkbd_exit); |
| 563 | |
| 564 | MODULE_LICENSE("GPL"); |