drivers/hid/hid-roccat-pyra.c

   1 /*
   2  * Roccat Pyra 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 Pyra is a mobile gamer mouse which comes in wired and wireless
  16  * variant. Wireless variant is not tested.
  17  * Userland tools can be found at http://sourceforge.net/projects/roccat
  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-pyra.h"
  29
  30 static uint profile_numbers[5] = {0, 1, 2, 3, 4};
  31
  32 /* pyra_class is used for creating sysfs attributes via roccat char device */
  33 static struct class *pyra_class;
  34
  35 static void profile_activated(struct pyra_device *pyra,
  36                 unsigned int new_profile)
  37 {
  38         pyra->actual_profile = new_profile;
  39         pyra->actual_cpi = pyra->profile_settings[pyra->actual_profile].y_cpi;
  40 }
  41
  42 static int pyra_send_control(struct usb_device *usb_dev, int value,
  43                 enum pyra_control_requests request)
  44 {
  45         struct roccat_common2_control control;
  46
  47         if ((request == PYRA_CONTROL_REQUEST_PROFILE_SETTINGS ||
  48                         request == PYRA_CONTROL_REQUEST_PROFILE_BUTTONS) &&
  49                         (value < 0 || value > 4))
  50                 return -EINVAL;
  51
  52         control.command = ROCCAT_COMMON_COMMAND_CONTROL;
  53         control.value = value;
  54         control.request = request;
  55
  56         return roccat_common2_send(usb_dev, ROCCAT_COMMON_COMMAND_CONTROL,
  57                         &control, sizeof(struct roccat_common2_control));
  58 }
  59
  60 static int pyra_get_profile_settings(struct usb_device *usb_dev,
  61                 struct pyra_profile_settings *buf, int number)
  62 {
  63         int retval;
  64         retval = pyra_send_control(usb_dev, number,
  65                         PYRA_CONTROL_REQUEST_PROFILE_SETTINGS);
  66         if (retval)
  67                 return retval;
  68         return roccat_common2_receive(usb_dev, PYRA_COMMAND_PROFILE_SETTINGS,
  69                         buf, PYRA_SIZE_PROFILE_SETTINGS);
  70 }
  71
  72 static int pyra_get_settings(struct usb_device *usb_dev,
  73                 struct pyra_settings *buf)
  74 {
  75         return roccat_common2_receive(usb_dev, PYRA_COMMAND_SETTINGS,
  76                         buf, PYRA_SIZE_SETTINGS);
  77 }
  78
  79 static int pyra_set_settings(struct usb_device *usb_dev,
  80                 struct pyra_settings const *settings)
  81 {
  82         return roccat_common2_send_with_status(usb_dev,
  83                         PYRA_COMMAND_SETTINGS, settings,
  84                         PYRA_SIZE_SETTINGS);
  85 }
  86
  87 static ssize_t pyra_sysfs_read(struct file *fp, struct kobject *kobj,
  88                 char *buf, loff_t off, size_t count,
  89                 size_t real_size, uint command)
  90 {
  91         struct device *dev =
  92                         container_of(kobj, struct device, kobj)->parent->parent;
  93         struct pyra_device *pyra = hid_get_drvdata(dev_get_drvdata(dev));
  94         struct usb_device *usb_dev = interface_to_usbdev(to_usb_interface(dev));
  95         int retval;
  96
  97         if (off >= real_size)
  98                 return 0;
  99
 100         if (off != 0 || count != real_size)
 101                 return -EINVAL;
 102
 103         mutex_lock(&pyra->pyra_lock);
 104         retval = roccat_common2_receive(usb_dev, command, buf, real_size);
 105         mutex_unlock(&pyra->pyra_lock);
 106
 107         if (retval)
 108                 return retval;
 109
 110         return real_size;
 111 }
 112
 113 static ssize_t pyra_sysfs_write(struct file *fp, struct kobject *kobj,
 114                 void const *buf, loff_t off, size_t count,
 115                 size_t real_size, uint command)
 116 {
 117         struct device *dev =
 118                         container_of(kobj, struct device, kobj)->parent->parent;
 119         struct pyra_device *pyra = hid_get_drvdata(dev_get_drvdata(dev));
 120         struct usb_device *usb_dev = interface_to_usbdev(to_usb_interface(dev));
 121         int retval;
 122
 123         if (off != 0 || count != real_size)
 124                 return -EINVAL;
 125
 126         mutex_lock(&pyra->pyra_lock);
 127         retval = roccat_common2_send_with_status(usb_dev, command, (void *)buf, real_size);
 128         mutex_unlock(&pyra->pyra_lock);
 129
 130         if (retval)
 131                 return retval;
 132
 133         return real_size;
 134 }
 135
 136 #define PYRA_SYSFS_W(thingy, THINGY) \
 137 static ssize_t pyra_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 pyra_sysfs_write(fp, kobj, buf, off, count, \
 142                         PYRA_SIZE_ ## THINGY, PYRA_COMMAND_ ## THINGY); \
 143 }
 144
 145 #define PYRA_SYSFS_R(thingy, THINGY) \
 146 static ssize_t pyra_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 pyra_sysfs_read(fp, kobj, buf, off, count, \
 151                         PYRA_SIZE_ ## THINGY, PYRA_COMMAND_ ## THINGY); \
 152 }
 153
 154 #define PYRA_SYSFS_RW(thingy, THINGY) \
 155 PYRA_SYSFS_W(thingy, THINGY) \
 156 PYRA_SYSFS_R(thingy, THINGY)
 157
 158 #define PYRA_BIN_ATTRIBUTE_RW(thingy, THINGY) \
 159 { \
 160         .attr = { .name = #thingy, .mode = 0660 }, \
 161         .size = PYRA_SIZE_ ## THINGY, \
 162         .read = pyra_sysfs_read_ ## thingy, \
 163         .write = pyra_sysfs_write_ ## thingy \
 164 }
 165
 166 #define PYRA_BIN_ATTRIBUTE_R(thingy, THINGY) \
 167 { \
 168         .attr = { .name = #thingy, .mode = 0440 }, \
 169         .size = PYRA_SIZE_ ## THINGY, \
 170         .read = pyra_sysfs_read_ ## thingy, \
 171 }
 172
 173 #define PYRA_BIN_ATTRIBUTE_W(thingy, THINGY) \
 174 { \
 175         .attr = { .name = #thingy, .mode = 0220 }, \
 176         .size = PYRA_SIZE_ ## THINGY, \
 177         .write = pyra_sysfs_write_ ## thingy \
 178 }
 179
 180 PYRA_SYSFS_RW(info, INFO)
 181 PYRA_SYSFS_W(profile_settings, PROFILE_SETTINGS)
 182 PYRA_SYSFS_W(profile_buttons, PROFILE_BUTTONS)
 183 PYRA_SYSFS_R(settings, SETTINGS)
 184
 185 static ssize_t pyra_sysfs_read_profilex_settings(struct file *fp,
 186                 struct kobject *kobj, struct bin_attribute *attr, char *buf,
 187                 loff_t off, size_t count)
 188 {
 189         struct device *dev =
 190                         container_of(kobj, struct device, kobj)->parent->parent;
 191         struct usb_device *usb_dev = interface_to_usbdev(to_usb_interface(dev));
 192         ssize_t retval;
 193
 194         retval = pyra_send_control(usb_dev, *(uint *)(attr->private),
 195                         PYRA_CONTROL_REQUEST_PROFILE_SETTINGS);
 196         if (retval)
 197                 return retval;
 198
 199         return pyra_sysfs_read(fp, kobj, buf, off, count,
 200                         PYRA_SIZE_PROFILE_SETTINGS,
 201                         PYRA_COMMAND_PROFILE_SETTINGS);
 202 }
 203
 204 static ssize_t pyra_sysfs_read_profilex_buttons(struct file *fp,
 205                 struct kobject *kobj, struct bin_attribute *attr, char *buf,
 206                 loff_t off, size_t count)
 207 {
 208         struct device *dev =
 209                         container_of(kobj, struct device, kobj)->parent->parent;
 210         struct usb_device *usb_dev = interface_to_usbdev(to_usb_interface(dev));
 211         ssize_t retval;
 212
 213         retval = pyra_send_control(usb_dev, *(uint *)(attr->private),
 214                         PYRA_CONTROL_REQUEST_PROFILE_BUTTONS);
 215         if (retval)
 216                 return retval;
 217
 218         return pyra_sysfs_read(fp, kobj, buf, off, count,
 219                         PYRA_SIZE_PROFILE_BUTTONS,
 220                         PYRA_COMMAND_PROFILE_BUTTONS);
 221 }
 222
 223 static ssize_t pyra_sysfs_write_settings(struct file *fp,
 224                 struct kobject *kobj, struct bin_attribute *attr, char *buf,
 225                 loff_t off, size_t count)
 226 {
 227         struct device *dev =
 228                         container_of(kobj, struct device, kobj)->parent->parent;
 229         struct pyra_device *pyra = hid_get_drvdata(dev_get_drvdata(dev));
 230         struct usb_device *usb_dev = interface_to_usbdev(to_usb_interface(dev));
 231         int retval = 0;
 232         struct pyra_roccat_report roccat_report;
 233         struct pyra_settings const *settings;
 234
 235         if (off != 0 || count != PYRA_SIZE_SETTINGS)
 236                 return -EINVAL;
 237
 238         mutex_lock(&pyra->pyra_lock);
 239
 240         settings = (struct pyra_settings const *)buf;
 241
 242         retval = pyra_set_settings(usb_dev, settings);
 243         if (retval) {
 244                 mutex_unlock(&pyra->pyra_lock);
 245                 return retval;
 246         }
 247
 248         profile_activated(pyra, settings->startup_profile);
 249
 250         roccat_report.type = PYRA_MOUSE_EVENT_BUTTON_TYPE_PROFILE_2;
 251         roccat_report.value = settings->startup_profile + 1;
 252         roccat_report.key = 0;
 253         roccat_report_event(pyra->chrdev_minor,
 254                         (uint8_t const *)&roccat_report);
 255
 256         mutex_unlock(&pyra->pyra_lock);
 257         return PYRA_SIZE_SETTINGS;
 258 }
 259
 260
 261 static ssize_t pyra_sysfs_show_actual_cpi(struct device *dev,
 262                 struct device_attribute *attr, char *buf)
 263 {
 264         struct pyra_device *pyra =
 265                         hid_get_drvdata(dev_get_drvdata(dev->parent->parent));
 266         return snprintf(buf, PAGE_SIZE, "%d\n", pyra->actual_cpi);
 267 }
 268
 269 static ssize_t pyra_sysfs_show_actual_profile(struct device *dev,
 270                 struct device_attribute *attr, char *buf)
 271 {
 272         struct pyra_device *pyra =
 273                         hid_get_drvdata(dev_get_drvdata(dev->parent->parent));
 274         struct usb_device *usb_dev = interface_to_usbdev(to_usb_interface(dev));
 275         struct pyra_settings settings;
 276
 277         mutex_lock(&pyra->pyra_lock);
 278         roccat_common2_receive(usb_dev, PYRA_COMMAND_SETTINGS,
 279                         &settings, PYRA_SIZE_SETTINGS);
 280         mutex_unlock(&pyra->pyra_lock);
 281
 282         return snprintf(buf, PAGE_SIZE, "%d\n", settings.startup_profile);
 283 }
 284
 285 static ssize_t pyra_sysfs_show_firmware_version(struct device *dev,
 286                 struct device_attribute *attr, char *buf)
 287 {
 288         struct pyra_device *pyra;
 289         struct usb_device *usb_dev;
 290         struct pyra_info info;
 291
 292         dev = dev->parent->parent;
 293         pyra = hid_get_drvdata(dev_get_drvdata(dev));
 294         usb_dev = interface_to_usbdev(to_usb_interface(dev));
 295
 296         mutex_lock(&pyra->pyra_lock);
 297         roccat_common2_receive(usb_dev, PYRA_COMMAND_INFO,
 298                         &info, PYRA_SIZE_INFO);
 299         mutex_unlock(&pyra->pyra_lock);
 300
 301         return snprintf(buf, PAGE_SIZE, "%d\n", info.firmware_version);
 302 }
 303
 304 static struct device_attribute pyra_attributes[] = {
 305         __ATTR(actual_cpi, 0440, pyra_sysfs_show_actual_cpi, NULL),
 306         __ATTR(actual_profile, 0440, pyra_sysfs_show_actual_profile, NULL),
 307         __ATTR(firmware_version, 0440,
 308                         pyra_sysfs_show_firmware_version, NULL),
 309         __ATTR(startup_profile, 0440,
 310                         pyra_sysfs_show_actual_profile, NULL),
 311         __ATTR_NULL
 312 };
 313
 314 static struct bin_attribute pyra_bin_attributes[] = {
 315         PYRA_BIN_ATTRIBUTE_RW(info, INFO),
 316         PYRA_BIN_ATTRIBUTE_W(profile_settings, PROFILE_SETTINGS),
 317         PYRA_BIN_ATTRIBUTE_W(profile_buttons, PROFILE_BUTTONS),
 318         PYRA_BIN_ATTRIBUTE_RW(settings, SETTINGS),
 319         {
 320                 .attr = { .name = "profile1_settings", .mode = 0440 },
 321                 .size = PYRA_SIZE_PROFILE_SETTINGS,
 322                 .read = pyra_sysfs_read_profilex_settings,
 323                 .private = &profile_numbers[0]
 324         },
 325         {
 326                 .attr = { .name = "profile2_settings", .mode = 0440 },
 327                 .size = PYRA_SIZE_PROFILE_SETTINGS,
 328                 .read = pyra_sysfs_read_profilex_settings,
 329                 .private = &profile_numbers[1]
 330         },
 331         {
 332                 .attr = { .name = "profile3_settings", .mode = 0440 },
 333                 .size = PYRA_SIZE_PROFILE_SETTINGS,
 334                 .read = pyra_sysfs_read_profilex_settings,
 335                 .private = &profile_numbers[2]
 336         },
 337         {
 338                 .attr = { .name = "profile4_settings", .mode = 0440 },
 339                 .size = PYRA_SIZE_PROFILE_SETTINGS,
 340                 .read = pyra_sysfs_read_profilex_settings,
 341                 .private = &profile_numbers[3]
 342         },
 343         {
 344                 .attr = { .name = "profile5_settings", .mode = 0440 },
 345                 .size = PYRA_SIZE_PROFILE_SETTINGS,
 346                 .read = pyra_sysfs_read_profilex_settings,
 347                 .private = &profile_numbers[4]
 348         },
 349         {
 350                 .attr = { .name = "profile1_buttons", .mode = 0440 },
 351                 .size = PYRA_SIZE_PROFILE_BUTTONS,
 352                 .read = pyra_sysfs_read_profilex_buttons,
 353                 .private = &profile_numbers[0]
 354         },
 355         {
 356                 .attr = { .name = "profile2_buttons", .mode = 0440 },
 357                 .size = PYRA_SIZE_PROFILE_BUTTONS,
 358                 .read = pyra_sysfs_read_profilex_buttons,
 359                 .private = &profile_numbers[1]
 360         },
 361         {
 362                 .attr = { .name = "profile3_buttons", .mode = 0440 },
 363                 .size = PYRA_SIZE_PROFILE_BUTTONS,
 364                 .read = pyra_sysfs_read_profilex_buttons,
 365                 .private = &profile_numbers[2]
 366         },
 367         {
 368                 .attr = { .name = "profile4_buttons", .mode = 0440 },
 369                 .size = PYRA_SIZE_PROFILE_BUTTONS,
 370                 .read = pyra_sysfs_read_profilex_buttons,
 371                 .private = &profile_numbers[3]
 372         },
 373         {
 374                 .attr = { .name = "profile5_buttons", .mode = 0440 },
 375                 .size = PYRA_SIZE_PROFILE_BUTTONS,
 376                 .read = pyra_sysfs_read_profilex_buttons,
 377                 .private = &profile_numbers[4]
 378         },
 379         __ATTR_NULL
 380 };
 381
 382 static int pyra_init_pyra_device_struct(struct usb_device *usb_dev,
 383                 struct pyra_device *pyra)
 384 {
 385         struct pyra_settings settings;
 386         int retval, i;
 387
 388         mutex_init(&pyra->pyra_lock);
 389
 390         retval = pyra_get_settings(usb_dev, &settings);
 391         if (retval)
 392                 return retval;
 393
 394         for (i = 0; i < 5; ++i) {
 395                 retval = pyra_get_profile_settings(usb_dev,
 396                                 &pyra->profile_settings[i], i);
 397                 if (retval)
 398                         return retval;
 399         }
 400
 401         profile_activated(pyra, settings.startup_profile);
 402
 403         return 0;
 404 }
 405
 406 static int pyra_init_specials(struct hid_device *hdev)
 407 {
 408         struct usb_interface *intf = to_usb_interface(hdev->dev.parent);
 409         struct usb_device *usb_dev = interface_to_usbdev(intf);
 410         struct pyra_device *pyra;
 411         int retval;
 412
 413         if (intf->cur_altsetting->desc.bInterfaceProtocol
 414                         == USB_INTERFACE_PROTOCOL_MOUSE) {
 415
 416                 pyra = kzalloc(sizeof(*pyra), GFP_KERNEL);
 417                 if (!pyra) {
 418                         hid_err(hdev, "can't alloc device descriptor\n");
 419                         return -ENOMEM;
 420                 }
 421                 hid_set_drvdata(hdev, pyra);
 422
 423                 retval = pyra_init_pyra_device_struct(usb_dev, pyra);
 424                 if (retval) {
 425                         hid_err(hdev, "couldn't init struct pyra_device\n");
 426                         goto exit_free;
 427                 }
 428
 429                 retval = roccat_connect(pyra_class, hdev,
 430                                 sizeof(struct pyra_roccat_report));
 431                 if (retval < 0) {
 432                         hid_err(hdev, "couldn't init char dev\n");
 433                 } else {
 434                         pyra->chrdev_minor = retval;
 435                         pyra->roccat_claimed = 1;
 436                 }
 437         } else {
 438                 hid_set_drvdata(hdev, NULL);
 439         }
 440
 441         return 0;
 442 exit_free:
 443         kfree(pyra);
 444         return retval;
 445 }
 446
 447 static void pyra_remove_specials(struct hid_device *hdev)
 448 {
 449         struct usb_interface *intf = to_usb_interface(hdev->dev.parent);
 450         struct pyra_device *pyra;
 451
 452         if (intf->cur_altsetting->desc.bInterfaceProtocol
 453                         == USB_INTERFACE_PROTOCOL_MOUSE) {
 454                 pyra = hid_get_drvdata(hdev);
 455                 if (pyra->roccat_claimed)
 456                         roccat_disconnect(pyra->chrdev_minor);
 457                 kfree(hid_get_drvdata(hdev));
 458         }
 459 }
 460
 461 static int pyra_probe(struct hid_device *hdev, const struct hid_device_id *id)
 462 {
 463         int retval;
 464
 465         retval = hid_parse(hdev);
 466         if (retval) {
 467                 hid_err(hdev, "parse failed\n");
 468                 goto exit;
 469         }
 470
 471         retval = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
 472         if (retval) {
 473                 hid_err(hdev, "hw start failed\n");
 474                 goto exit;
 475         }
 476
 477         retval = pyra_init_specials(hdev);
 478         if (retval) {
 479                 hid_err(hdev, "couldn't install mouse\n");
 480                 goto exit_stop;
 481         }
 482         return 0;
 483
 484 exit_stop:
 485         hid_hw_stop(hdev);
 486 exit:
 487         return retval;
 488 }
 489
 490 static void pyra_remove(struct hid_device *hdev)
 491 {
 492         pyra_remove_specials(hdev);
 493         hid_hw_stop(hdev);
 494 }
 495
 496 static void pyra_keep_values_up_to_date(struct pyra_device *pyra,
 497                 u8 const *data)
 498 {
 499         struct pyra_mouse_event_button const *button_event;
 500
 501         switch (data[0]) {
 502         case PYRA_MOUSE_REPORT_NUMBER_BUTTON:
 503                 button_event = (struct pyra_mouse_event_button const *)data;
 504                 switch (button_event->type) {
 505                 case PYRA_MOUSE_EVENT_BUTTON_TYPE_PROFILE_2:
 506                         profile_activated(pyra, button_event->data1 - 1);
 507                         break;
 508                 case PYRA_MOUSE_EVENT_BUTTON_TYPE_CPI:
 509                         pyra->actual_cpi = button_event->data1;
 510                         break;
 511                 }
 512                 break;
 513         }
 514 }
 515
 516 static void pyra_report_to_chrdev(struct pyra_device const *pyra,
 517                 u8 const *data)
 518 {
 519         struct pyra_roccat_report roccat_report;
 520         struct pyra_mouse_event_button const *button_event;
 521
 522         if (data[0] != PYRA_MOUSE_REPORT_NUMBER_BUTTON)
 523                 return;
 524
 525         button_event = (struct pyra_mouse_event_button const *)data;
 526
 527         switch (button_event->type) {
 528         case PYRA_MOUSE_EVENT_BUTTON_TYPE_PROFILE_2:
 529         case PYRA_MOUSE_EVENT_BUTTON_TYPE_CPI:
 530                 roccat_report.type = button_event->type;
 531                 roccat_report.value = button_event->data1;
 532                 roccat_report.key = 0;
 533                 roccat_report_event(pyra->chrdev_minor,
 534                                 (uint8_t const *)&roccat_report);
 535                 break;
 536         case PYRA_MOUSE_EVENT_BUTTON_TYPE_MACRO:
 537         case PYRA_MOUSE_EVENT_BUTTON_TYPE_SHORTCUT:
 538         case PYRA_MOUSE_EVENT_BUTTON_TYPE_QUICKLAUNCH:
 539                 if (button_event->data2 == PYRA_MOUSE_EVENT_BUTTON_PRESS) {
 540                         roccat_report.type = button_event->type;
 541                         roccat_report.key = button_event->data1;
 542                         /*
 543                          * pyra reports profile numbers with range 1-5.
 544                          * Keeping this behaviour.
 545                          */
 546                         roccat_report.value = pyra->actual_profile + 1;
 547                         roccat_report_event(pyra->chrdev_minor,
 548                                         (uint8_t const *)&roccat_report);
 549                 }
 550                 break;
 551         }
 552 }
 553
 554 static int pyra_raw_event(struct hid_device *hdev, struct hid_report *report,
 555                 u8 *data, int size)
 556 {
 557         struct usb_interface *intf = to_usb_interface(hdev->dev.parent);
 558         struct pyra_device *pyra = hid_get_drvdata(hdev);
 559
 560         if (intf->cur_altsetting->desc.bInterfaceProtocol
 561                         != USB_INTERFACE_PROTOCOL_MOUSE)
 562                 return 0;
 563
 564         if (pyra == NULL)
 565                 return 0;
 566
 567         pyra_keep_values_up_to_date(pyra, data);
 568
 569         if (pyra->roccat_claimed)
 570                 pyra_report_to_chrdev(pyra, data);
 571
 572         return 0;
 573 }
 574
 575 static const struct hid_device_id pyra_devices[] = {
 576         { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT,
 577                         USB_DEVICE_ID_ROCCAT_PYRA_WIRED) },
 578         { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT,
 579                         USB_DEVICE_ID_ROCCAT_PYRA_WIRELESS) },
 580         { }
 581 };
 582
 583 MODULE_DEVICE_TABLE(hid, pyra_devices);
 584
 585 static struct hid_driver pyra_driver = {
 586                 .name = "pyra",
 587                 .id_table = pyra_devices,
 588                 .probe = pyra_probe,
 589                 .remove = pyra_remove,
 590                 .raw_event = pyra_raw_event
 591 };
 592
 593 static int __init pyra_init(void)
 594 {
 595         int retval;
 596
 597         /* class name has to be same as driver name */
 598         pyra_class = class_create(THIS_MODULE, "pyra");
 599         if (IS_ERR(pyra_class))
 600                 return PTR_ERR(pyra_class);
 601         pyra_class->dev_attrs = pyra_attributes;
 602         pyra_class->dev_bin_attrs = pyra_bin_attributes;
 603
 604         retval = hid_register_driver(&pyra_driver);
 605         if (retval)
 606                 class_destroy(pyra_class);
 607         return retval;
 608 }
 609
 610 static void __exit pyra_exit(void)
 611 {
 612         hid_unregister_driver(&pyra_driver);
 613         class_destroy(pyra_class);
 614 }
 615
 616 module_init(pyra_init);
 617 module_exit(pyra_exit);
 618
 619 MODULE_AUTHOR("Stefan Achatz");
 620 MODULE_DESCRIPTION("USB Roccat Pyra driver");
 621 MODULE_LICENSE("GPL v2");