drivers/hid/hid-roccat-koneplus.c

   1 /*
   2  * Roccat Kone[+] driver for Linux
   3  *
   4  * Copyright (c) 2010 Stefan Achatz <erazor_de@users.sourceforge.net>
   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 /*
  15  * Roccat Kone[+] is an updated/improved version of the Kone with more memory
  16  * and functionality and without the non-standard behaviours the Kone had.
  17  * KoneXTD has same capabilities but updated sensor.
  18  */
  19
  20 #include <linux/device.h>
  21 #include <linux/input.h>
  22 #include <linux/hid.h>
  23 #include <linux/module.h>
  24 #include <linux/slab.h>
  25 #include <linux/hid-roccat.h>
  26 #include "hid-ids.h"
  27 #include "hid-roccat-common.h"
  28 #include "hid-roccat-koneplus.h"
  29
  30 static uint profile_numbers[5] = {0, 1, 2, 3, 4};
  31
  32 static struct class *koneplus_class;
  33
  34 static void koneplus_profile_activated(struct koneplus_device *koneplus,
  35                 uint new_profile)
  36 {
  37         koneplus->actual_profile = new_profile;
  38 }
  39
  40 static int koneplus_send_control(struct usb_device *usb_dev, uint value,
  41                 enum koneplus_control_requests request)
  42 {
  43         struct roccat_common2_control control;
  44
  45         if ((request == KONEPLUS_CONTROL_REQUEST_PROFILE_SETTINGS ||
  46                         request == KONEPLUS_CONTROL_REQUEST_PROFILE_BUTTONS) &&
  47                         value > 4)
  48                 return -EINVAL;
  49
  50         control.command = ROCCAT_COMMON_COMMAND_CONTROL;
  51         control.value = value;
  52         control.request = request;
  53
  54         return roccat_common2_send_with_status(usb_dev,
  55                         ROCCAT_COMMON_COMMAND_CONTROL,
  56                         &control, sizeof(struct roccat_common2_control));
  57 }
  58
  59
  60 /* retval is 0-4 on success, < 0 on error */
  61 static int koneplus_get_actual_profile(struct usb_device *usb_dev)
  62 {
  63         struct koneplus_actual_profile buf;
  64         int retval;
  65
  66         retval = roccat_common2_receive(usb_dev, KONEPLUS_COMMAND_ACTUAL_PROFILE,
  67                         &buf, KONEPLUS_SIZE_ACTUAL_PROFILE);
  68
  69         return retval ? retval : buf.actual_profile;
  70 }
  71
  72 static int koneplus_set_actual_profile(struct usb_device *usb_dev,
  73                 int new_profile)
  74 {
  75         struct koneplus_actual_profile buf;
  76
  77         buf.command = KONEPLUS_COMMAND_ACTUAL_PROFILE;
  78         buf.size = KONEPLUS_SIZE_ACTUAL_PROFILE;
  79         buf.actual_profile = new_profile;
  80
  81         return roccat_common2_send_with_status(usb_dev,
  82                         KONEPLUS_COMMAND_ACTUAL_PROFILE,
  83                         &buf, KONEPLUS_SIZE_ACTUAL_PROFILE);
  84 }
  85
  86 static ssize_t koneplus_sysfs_read(struct file *fp, struct kobject *kobj,
  87                 char *buf, loff_t off, size_t count,
  88                 size_t real_size, uint command)
  89 {
  90         struct device *dev =
  91                         container_of(kobj, struct device, kobj)->parent->parent;
  92         struct koneplus_device *koneplus = hid_get_drvdata(dev_get_drvdata(dev));
  93         struct usb_device *usb_dev = interface_to_usbdev(to_usb_interface(dev));
  94         int retval;
  95
  96         if (off >= real_size)
  97                 return 0;
  98
  99         if (off != 0 || count != real_size)
 100                 return -EINVAL;
 101
 102         mutex_lock(&koneplus->koneplus_lock);
 103         retval = roccat_common2_receive(usb_dev, command, buf, real_size);
 104         mutex_unlock(&koneplus->koneplus_lock);
 105
 106         if (retval)
 107                 return retval;
 108
 109         return real_size;
 110 }
 111
 112 static ssize_t koneplus_sysfs_write(struct file *fp, struct kobject *kobj,
 113                 void const *buf, loff_t off, size_t count,
 114                 size_t real_size, uint command)
 115 {
 116         struct device *dev =
 117                         container_of(kobj, struct device, kobj)->parent->parent;
 118         struct koneplus_device *koneplus = hid_get_drvdata(dev_get_drvdata(dev));
 119         struct usb_device *usb_dev = interface_to_usbdev(to_usb_interface(dev));
 120         int retval;
 121
 122         if (off != 0 || count != real_size)
 123                 return -EINVAL;
 124
 125         mutex_lock(&koneplus->koneplus_lock);
 126         retval = roccat_common2_send_with_status(usb_dev, command,
 127                         buf, real_size);
 128         mutex_unlock(&koneplus->koneplus_lock);
 129
 130         if (retval)
 131                 return retval;
 132
 133         return real_size;
 134 }
 135
 136 #define KONEPLUS_SYSFS_W(thingy, THINGY) \
 137 static ssize_t koneplus_sysfs_write_ ## thingy(struct file *fp, \
 138                 struct kobject *kobj, struct bin_attribute *attr, char *buf, \
 139                 loff_t off, size_t count) \
 140 { \
 141         return koneplus_sysfs_write(fp, kobj, buf, off, count, \
 142                         KONEPLUS_SIZE_ ## THINGY, KONEPLUS_COMMAND_ ## THINGY); \
 143 }
 144
 145 #define KONEPLUS_SYSFS_R(thingy, THINGY) \
 146 static ssize_t koneplus_sysfs_read_ ## thingy(struct file *fp, \
 147                 struct kobject *kobj, struct bin_attribute *attr, char *buf, \
 148                 loff_t off, size_t count) \
 149 { \
 150         return koneplus_sysfs_read(fp, kobj, buf, off, count, \
 151                         KONEPLUS_SIZE_ ## THINGY, KONEPLUS_COMMAND_ ## THINGY); \
 152 }
 153
 154 #define KONEPLUS_SYSFS_RW(thingy, THINGY) \
 155 KONEPLUS_SYSFS_W(thingy, THINGY) \
 156 KONEPLUS_SYSFS_R(thingy, THINGY)
 157
 158 #define KONEPLUS_BIN_ATTRIBUTE_RW(thingy, THINGY) \
 159 { \
 160         .attr = { .name = #thingy, .mode = 0660 }, \
 161         .size = KONEPLUS_SIZE_ ## THINGY, \
 162         .read = koneplus_sysfs_read_ ## thingy, \
 163         .write = koneplus_sysfs_write_ ## thingy \
 164 }
 165
 166 #define KONEPLUS_BIN_ATTRIBUTE_R(thingy, THINGY) \
 167 { \
 168         .attr = { .name = #thingy, .mode = 0440 }, \
 169         .size = KONEPLUS_SIZE_ ## THINGY, \
 170         .read = koneplus_sysfs_read_ ## thingy, \
 171 }
 172
 173 #define KONEPLUS_BIN_ATTRIBUTE_W(thingy, THINGY) \
 174 { \
 175         .attr = { .name = #thingy, .mode = 0220 }, \
 176         .size = KONEPLUS_SIZE_ ## THINGY, \
 177         .write = koneplus_sysfs_write_ ## thingy \
 178 }
 179
 180 KONEPLUS_SYSFS_W(control, CONTROL)
 181 KONEPLUS_SYSFS_RW(info, INFO)
 182 KONEPLUS_SYSFS_W(talk, TALK)
 183 KONEPLUS_SYSFS_W(macro, MACRO)
 184 KONEPLUS_SYSFS_RW(sensor, SENSOR)
 185 KONEPLUS_SYSFS_RW(tcu, TCU)
 186 KONEPLUS_SYSFS_R(tcu_image, TCU_IMAGE)
 187 KONEPLUS_SYSFS_RW(profile_settings, PROFILE_SETTINGS)
 188 KONEPLUS_SYSFS_RW(profile_buttons, PROFILE_BUTTONS)
 189
 190 static ssize_t koneplus_sysfs_read_profilex_settings(struct file *fp,
 191                 struct kobject *kobj, struct bin_attribute *attr, char *buf,
 192                 loff_t off, size_t count)
 193 {
 194         struct device *dev =
 195                         container_of(kobj, struct device, kobj)->parent->parent;
 196         struct usb_device *usb_dev = interface_to_usbdev(to_usb_interface(dev));
 197         ssize_t retval;
 198
 199         retval = koneplus_send_control(usb_dev, *(uint *)(attr->private),
 200                         KONEPLUS_CONTROL_REQUEST_PROFILE_SETTINGS);
 201         if (retval)
 202                 return retval;
 203
 204         return koneplus_sysfs_read(fp, kobj, buf, off, count,
 205                         KONEPLUS_SIZE_PROFILE_SETTINGS,
 206                         KONEPLUS_COMMAND_PROFILE_SETTINGS);
 207 }
 208
 209 static ssize_t koneplus_sysfs_read_profilex_buttons(struct file *fp,
 210                 struct kobject *kobj, struct bin_attribute *attr, char *buf,
 211                 loff_t off, size_t count)
 212 {
 213         struct device *dev =
 214                         container_of(kobj, struct device, kobj)->parent->parent;
 215         struct usb_device *usb_dev = interface_to_usbdev(to_usb_interface(dev));
 216         ssize_t retval;
 217
 218         retval = koneplus_send_control(usb_dev, *(uint *)(attr->private),
 219                         KONEPLUS_CONTROL_REQUEST_PROFILE_BUTTONS);
 220         if (retval)
 221                 return retval;
 222
 223         return koneplus_sysfs_read(fp, kobj, buf, off, count,
 224                         KONEPLUS_SIZE_PROFILE_BUTTONS,
 225                         KONEPLUS_COMMAND_PROFILE_BUTTONS);
 226 }
 227
 228 static ssize_t koneplus_sysfs_show_actual_profile(struct device *dev,
 229                 struct device_attribute *attr, char *buf)
 230 {
 231         struct koneplus_device *koneplus =
 232                         hid_get_drvdata(dev_get_drvdata(dev->parent->parent));
 233         return snprintf(buf, PAGE_SIZE, "%d\n", koneplus->actual_profile);
 234 }
 235
 236 static ssize_t koneplus_sysfs_set_actual_profile(struct device *dev,
 237                 struct device_attribute *attr, char const *buf, size_t size)
 238 {
 239         struct koneplus_device *koneplus;
 240         struct usb_device *usb_dev;
 241         unsigned long profile;
 242         int retval;
 243         struct koneplus_roccat_report roccat_report;
 244
 245         dev = dev->parent->parent;
 246         koneplus = hid_get_drvdata(dev_get_drvdata(dev));
 247         usb_dev = interface_to_usbdev(to_usb_interface(dev));
 248
 249         retval = strict_strtoul(buf, 10, &profile);
 250         if (retval)
 251                 return retval;
 252
 253         if (profile > 4)
 254                 return -EINVAL;
 255
 256         mutex_lock(&koneplus->koneplus_lock);
 257
 258         retval = koneplus_set_actual_profile(usb_dev, profile);
 259         if (retval) {
 260                 mutex_unlock(&koneplus->koneplus_lock);
 261                 return retval;
 262         }
 263
 264         koneplus_profile_activated(koneplus, profile);
 265
 266         roccat_report.type = KONEPLUS_MOUSE_REPORT_BUTTON_TYPE_PROFILE;
 267         roccat_report.data1 = profile + 1;
 268         roccat_report.data2 = 0;
 269         roccat_report.profile = profile + 1;
 270         roccat_report_event(koneplus->chrdev_minor,
 271                         (uint8_t const *)&roccat_report);
 272
 273         mutex_unlock(&koneplus->koneplus_lock);
 274
 275         return size;
 276 }
 277
 278 static ssize_t koneplus_sysfs_show_firmware_version(struct device *dev,
 279                 struct device_attribute *attr, char *buf)
 280 {
 281         struct koneplus_device *koneplus;
 282         struct usb_device *usb_dev;
 283         struct koneplus_info info;
 284
 285         dev = dev->parent->parent;
 286         koneplus = hid_get_drvdata(dev_get_drvdata(dev));
 287         usb_dev = interface_to_usbdev(to_usb_interface(dev));
 288
 289         mutex_lock(&koneplus->koneplus_lock);
 290         roccat_common2_receive(usb_dev, KONEPLUS_COMMAND_INFO,
 291                         &info, KONEPLUS_SIZE_INFO);
 292         mutex_unlock(&koneplus->koneplus_lock);
 293
 294         return snprintf(buf, PAGE_SIZE, "%d\n", info.firmware_version);
 295 }
 296
 297 static struct device_attribute koneplus_attributes[] = {
 298         __ATTR(actual_profile, 0660,
 299                         koneplus_sysfs_show_actual_profile,
 300                         koneplus_sysfs_set_actual_profile),
 301         __ATTR(startup_profile, 0660,
 302                         koneplus_sysfs_show_actual_profile,
 303                         koneplus_sysfs_set_actual_profile),
 304         __ATTR(firmware_version, 0440,
 305                         koneplus_sysfs_show_firmware_version, NULL),
 306         __ATTR_NULL
 307 };
 308
 309 static struct bin_attribute koneplus_bin_attributes[] = {
 310         KONEPLUS_BIN_ATTRIBUTE_W(control, CONTROL),
 311         KONEPLUS_BIN_ATTRIBUTE_RW(info, INFO),
 312         KONEPLUS_BIN_ATTRIBUTE_W(talk, TALK),
 313         KONEPLUS_BIN_ATTRIBUTE_W(macro, MACRO),
 314         KONEPLUS_BIN_ATTRIBUTE_RW(sensor, SENSOR),
 315         KONEPLUS_BIN_ATTRIBUTE_RW(tcu, TCU),
 316         KONEPLUS_BIN_ATTRIBUTE_R(tcu_image, TCU_IMAGE),
 317         KONEPLUS_BIN_ATTRIBUTE_RW(profile_settings, PROFILE_SETTINGS),
 318         KONEPLUS_BIN_ATTRIBUTE_RW(profile_buttons, PROFILE_BUTTONS),
 319         {
 320                 .attr = { .name = "profile1_settings", .mode = 0440 },
 321                 .size = KONEPLUS_SIZE_PROFILE_SETTINGS,
 322                 .read = koneplus_sysfs_read_profilex_settings,
 323                 .private = &profile_numbers[0]
 324         },
 325         {
 326                 .attr = { .name = "profile2_settings", .mode = 0440 },
 327                 .size = KONEPLUS_SIZE_PROFILE_SETTINGS,
 328                 .read = koneplus_sysfs_read_profilex_settings,
 329                 .private = &profile_numbers[1]
 330         },
 331         {
 332                 .attr = { .name = "profile3_settings", .mode = 0440 },
 333                 .size = KONEPLUS_SIZE_PROFILE_SETTINGS,
 334                 .read = koneplus_sysfs_read_profilex_settings,
 335                 .private = &profile_numbers[2]
 336         },
 337         {
 338                 .attr = { .name = "profile4_settings", .mode = 0440 },
 339                 .size = KONEPLUS_SIZE_PROFILE_SETTINGS,
 340                 .read = koneplus_sysfs_read_profilex_settings,
 341                 .private = &profile_numbers[3]
 342         },
 343         {
 344                 .attr = { .name = "profile5_settings", .mode = 0440 },
 345                 .size = KONEPLUS_SIZE_PROFILE_SETTINGS,
 346                 .read = koneplus_sysfs_read_profilex_settings,
 347                 .private = &profile_numbers[4]
 348         },
 349         {
 350                 .attr = { .name = "profile1_buttons", .mode = 0440 },
 351                 .size = KONEPLUS_SIZE_PROFILE_BUTTONS,
 352                 .read = koneplus_sysfs_read_profilex_buttons,
 353                 .private = &profile_numbers[0]
 354         },
 355         {
 356                 .attr = { .name = "profile2_buttons", .mode = 0440 },
 357                 .size = KONEPLUS_SIZE_PROFILE_BUTTONS,
 358                 .read = koneplus_sysfs_read_profilex_buttons,
 359                 .private = &profile_numbers[1]
 360         },
 361         {
 362                 .attr = { .name = "profile3_buttons", .mode = 0440 },
 363                 .size = KONEPLUS_SIZE_PROFILE_BUTTONS,
 364                 .read = koneplus_sysfs_read_profilex_buttons,
 365                 .private = &profile_numbers[2]
 366         },
 367         {
 368                 .attr = { .name = "profile4_buttons", .mode = 0440 },
 369                 .size = KONEPLUS_SIZE_PROFILE_BUTTONS,
 370                 .read = koneplus_sysfs_read_profilex_buttons,
 371                 .private = &profile_numbers[3]
 372         },
 373         {
 374                 .attr = { .name = "profile5_buttons", .mode = 0440 },
 375                 .size = KONEPLUS_SIZE_PROFILE_BUTTONS,
 376                 .read = koneplus_sysfs_read_profilex_buttons,
 377                 .private = &profile_numbers[4]
 378         },
 379         __ATTR_NULL
 380 };
 381
 382 static int koneplus_init_koneplus_device_struct(struct usb_device *usb_dev,
 383                 struct koneplus_device *koneplus)
 384 {
 385         int retval;
 386
 387         mutex_init(&koneplus->koneplus_lock);
 388
 389         retval = koneplus_get_actual_profile(usb_dev);
 390         if (retval < 0)
 391                 return retval;
 392         koneplus_profile_activated(koneplus, retval);
 393
 394         return 0;
 395 }
 396
 397 static int koneplus_init_specials(struct hid_device *hdev)
 398 {
 399         struct usb_interface *intf = to_usb_interface(hdev->dev.parent);
 400         struct usb_device *usb_dev = interface_to_usbdev(intf);
 401         struct koneplus_device *koneplus;
 402         int retval;
 403
 404         if (intf->cur_altsetting->desc.bInterfaceProtocol
 405                         == USB_INTERFACE_PROTOCOL_MOUSE) {
 406
 407                 koneplus = kzalloc(sizeof(*koneplus), GFP_KERNEL);
 408                 if (!koneplus) {
 409                         hid_err(hdev, "can't alloc device descriptor\n");
 410                         return -ENOMEM;
 411                 }
 412                 hid_set_drvdata(hdev, koneplus);
 413
 414                 retval = koneplus_init_koneplus_device_struct(usb_dev, koneplus);
 415                 if (retval) {
 416                         hid_err(hdev, "couldn't init struct koneplus_device\n");
 417                         goto exit_free;
 418                 }
 419
 420                 retval = roccat_connect(koneplus_class, hdev,
 421                                 sizeof(struct koneplus_roccat_report));
 422                 if (retval < 0) {
 423                         hid_err(hdev, "couldn't init char dev\n");
 424                 } else {
 425                         koneplus->chrdev_minor = retval;
 426                         koneplus->roccat_claimed = 1;
 427                 }
 428         } else {
 429                 hid_set_drvdata(hdev, NULL);
 430         }
 431
 432         return 0;
 433 exit_free:
 434         kfree(koneplus);
 435         return retval;
 436 }
 437
 438 static void koneplus_remove_specials(struct hid_device *hdev)
 439 {
 440         struct usb_interface *intf = to_usb_interface(hdev->dev.parent);
 441         struct koneplus_device *koneplus;
 442
 443         if (intf->cur_altsetting->desc.bInterfaceProtocol
 444                         == USB_INTERFACE_PROTOCOL_MOUSE) {
 445                 koneplus = hid_get_drvdata(hdev);
 446                 if (koneplus->roccat_claimed)
 447                         roccat_disconnect(koneplus->chrdev_minor);
 448                 kfree(koneplus);
 449         }
 450 }
 451
 452 static int koneplus_probe(struct hid_device *hdev,
 453                 const struct hid_device_id *id)
 454 {
 455         int retval;
 456
 457         retval = hid_parse(hdev);
 458         if (retval) {
 459                 hid_err(hdev, "parse failed\n");
 460                 goto exit;
 461         }
 462
 463         retval = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
 464         if (retval) {
 465                 hid_err(hdev, "hw start failed\n");
 466                 goto exit;
 467         }
 468
 469         retval = koneplus_init_specials(hdev);
 470         if (retval) {
 471                 hid_err(hdev, "couldn't install mouse\n");
 472                 goto exit_stop;
 473         }
 474
 475         return 0;
 476
 477 exit_stop:
 478         hid_hw_stop(hdev);
 479 exit:
 480         return retval;
 481 }
 482
 483 static void koneplus_remove(struct hid_device *hdev)
 484 {
 485         koneplus_remove_specials(hdev);
 486         hid_hw_stop(hdev);
 487 }
 488
 489 static void koneplus_keep_values_up_to_date(struct koneplus_device *koneplus,
 490                 u8 const *data)
 491 {
 492         struct koneplus_mouse_report_button const *button_report;
 493
 494         switch (data[0]) {
 495         case KONEPLUS_MOUSE_REPORT_NUMBER_BUTTON:
 496                 button_report = (struct koneplus_mouse_report_button const *)data;
 497                 switch (button_report->type) {
 498                 case KONEPLUS_MOUSE_REPORT_BUTTON_TYPE_PROFILE:
 499                         koneplus_profile_activated(koneplus, button_report->data1 - 1);
 500                         break;
 501                 }
 502                 break;
 503         }
 504 }
 505
 506 static void koneplus_report_to_chrdev(struct koneplus_device const *koneplus,
 507                 u8 const *data)
 508 {
 509         struct koneplus_roccat_report roccat_report;
 510         struct koneplus_mouse_report_button const *button_report;
 511
 512         if (data[0] != KONEPLUS_MOUSE_REPORT_NUMBER_BUTTON)
 513                 return;
 514
 515         button_report = (struct koneplus_mouse_report_button const *)data;
 516
 517         if ((button_report->type == KONEPLUS_MOUSE_REPORT_BUTTON_TYPE_QUICKLAUNCH ||
 518                         button_report->type == KONEPLUS_MOUSE_REPORT_BUTTON_TYPE_TIMER) &&
 519                         button_report->data2 != KONEPLUS_MOUSE_REPORT_BUTTON_ACTION_PRESS)
 520                 return;
 521
 522         roccat_report.type = button_report->type;
 523         roccat_report.data1 = button_report->data1;
 524         roccat_report.data2 = button_report->data2;
 525         roccat_report.profile = koneplus->actual_profile + 1;
 526         roccat_report_event(koneplus->chrdev_minor,
 527                         (uint8_t const *)&roccat_report);
 528 }
 529
 530 static int koneplus_raw_event(struct hid_device *hdev,
 531                 struct hid_report *report, u8 *data, int size)
 532 {
 533         struct usb_interface *intf = to_usb_interface(hdev->dev.parent);
 534         struct koneplus_device *koneplus = hid_get_drvdata(hdev);
 535
 536         if (intf->cur_altsetting->desc.bInterfaceProtocol
 537                         != USB_INTERFACE_PROTOCOL_MOUSE)
 538                 return 0;
 539
 540         if (koneplus == NULL)
 541                 return 0;
 542
 543         koneplus_keep_values_up_to_date(koneplus, data);
 544
 545         if (koneplus->roccat_claimed)
 546                 koneplus_report_to_chrdev(koneplus, data);
 547
 548         return 0;
 549 }
 550
 551 static const struct hid_device_id koneplus_devices[] = {
 552         { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_KONEPLUS) },
 553         { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_KONEXTD) },
 554         { }
 555 };
 556
 557 MODULE_DEVICE_TABLE(hid, koneplus_devices);
 558
 559 static struct hid_driver koneplus_driver = {
 560                 .name = "koneplus",
 561                 .id_table = koneplus_devices,
 562                 .probe = koneplus_probe,
 563                 .remove = koneplus_remove,
 564                 .raw_event = koneplus_raw_event
 565 };
 566
 567 static int __init koneplus_init(void)
 568 {
 569         int retval;
 570
 571         /* class name has to be same as driver name */
 572         koneplus_class = class_create(THIS_MODULE, "koneplus");
 573         if (IS_ERR(koneplus_class))
 574                 return PTR_ERR(koneplus_class);
 575         koneplus_class->dev_attrs = koneplus_attributes;
 576         koneplus_class->dev_bin_attrs = koneplus_bin_attributes;
 577
 578         retval = hid_register_driver(&koneplus_driver);
 579         if (retval)
 580                 class_destroy(koneplus_class);
 581         return retval;
 582 }
 583
 584 static void __exit koneplus_exit(void)
 585 {
 586         hid_unregister_driver(&koneplus_driver);
 587         class_destroy(koneplus_class);
 588 }
 589
 590 module_init(koneplus_init);
 591 module_exit(koneplus_exit);
 592
 593 MODULE_AUTHOR("Stefan Achatz");
 594 MODULE_DESCRIPTION("USB Roccat Kone[+]/XTD driver");
 595 MODULE_LICENSE("GPL v2");