linux/drivers/hid/hid-roccat-pyra.c
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   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
  30static uint profile_numbers[5] = {0, 1, 2, 3, 4};
  31
  32/* pyra_class is used for creating sysfs attributes via roccat char device */
  33static struct class *pyra_class;
  34
  35static 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
  42static 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
  60static 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
  72static 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
  79static 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
  87static 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
 113static 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) \
 137static 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) \
 146static 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) \
 155PYRA_SYSFS_W(thingy, THINGY) \
 156PYRA_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
 180PYRA_SYSFS_W(control, CONTROL)
 181PYRA_SYSFS_RW(info, INFO)
 182PYRA_SYSFS_RW(profile_settings, PROFILE_SETTINGS)
 183PYRA_SYSFS_RW(profile_buttons, PROFILE_BUTTONS)
 184PYRA_SYSFS_R(settings, SETTINGS)
 185
 186static ssize_t pyra_sysfs_read_profilex_settings(struct file *fp,
 187                struct kobject *kobj, struct bin_attribute *attr, char *buf,
 188                loff_t off, size_t count)
 189{
 190        struct device *dev =
 191                        container_of(kobj, struct device, kobj)->parent->parent;
 192        struct usb_device *usb_dev = interface_to_usbdev(to_usb_interface(dev));
 193        ssize_t retval;
 194
 195        retval = pyra_send_control(usb_dev, *(uint *)(attr->private),
 196                        PYRA_CONTROL_REQUEST_PROFILE_SETTINGS);
 197        if (retval)
 198                return retval;
 199
 200        return pyra_sysfs_read(fp, kobj, buf, off, count,
 201                        PYRA_SIZE_PROFILE_SETTINGS,
 202                        PYRA_COMMAND_PROFILE_SETTINGS);
 203}
 204
 205static ssize_t pyra_sysfs_read_profilex_buttons(struct file *fp,
 206                struct kobject *kobj, struct bin_attribute *attr, char *buf,
 207                loff_t off, size_t count)
 208{
 209        struct device *dev =
 210                        container_of(kobj, struct device, kobj)->parent->parent;
 211        struct usb_device *usb_dev = interface_to_usbdev(to_usb_interface(dev));
 212        ssize_t retval;
 213
 214        retval = pyra_send_control(usb_dev, *(uint *)(attr->private),
 215                        PYRA_CONTROL_REQUEST_PROFILE_BUTTONS);
 216        if (retval)
 217                return retval;
 218
 219        return pyra_sysfs_read(fp, kobj, buf, off, count,
 220                        PYRA_SIZE_PROFILE_BUTTONS,
 221                        PYRA_COMMAND_PROFILE_BUTTONS);
 222}
 223
 224static ssize_t pyra_sysfs_write_settings(struct file *fp,
 225                struct kobject *kobj, struct bin_attribute *attr, char *buf,
 226                loff_t off, size_t count)
 227{
 228        struct device *dev =
 229                        container_of(kobj, struct device, kobj)->parent->parent;
 230        struct pyra_device *pyra = hid_get_drvdata(dev_get_drvdata(dev));
 231        struct usb_device *usb_dev = interface_to_usbdev(to_usb_interface(dev));
 232        int retval = 0;
 233        struct pyra_roccat_report roccat_report;
 234        struct pyra_settings const *settings;
 235
 236        if (off != 0 || count != PYRA_SIZE_SETTINGS)
 237                return -EINVAL;
 238
 239        mutex_lock(&pyra->pyra_lock);
 240
 241        settings = (struct pyra_settings const *)buf;
 242
 243        retval = pyra_set_settings(usb_dev, settings);
 244        if (retval) {
 245                mutex_unlock(&pyra->pyra_lock);
 246                return retval;
 247        }
 248
 249        profile_activated(pyra, settings->startup_profile);
 250
 251        roccat_report.type = PYRA_MOUSE_EVENT_BUTTON_TYPE_PROFILE_2;
 252        roccat_report.value = settings->startup_profile + 1;
 253        roccat_report.key = 0;
 254        roccat_report_event(pyra->chrdev_minor,
 255                        (uint8_t const *)&roccat_report);
 256
 257        mutex_unlock(&pyra->pyra_lock);
 258        return PYRA_SIZE_SETTINGS;
 259}
 260
 261
 262static ssize_t pyra_sysfs_show_actual_cpi(struct device *dev,
 263                struct device_attribute *attr, char *buf)
 264{
 265        struct pyra_device *pyra =
 266                        hid_get_drvdata(dev_get_drvdata(dev->parent->parent));
 267        return snprintf(buf, PAGE_SIZE, "%d\n", pyra->actual_cpi);
 268}
 269
 270static ssize_t pyra_sysfs_show_actual_profile(struct device *dev,
 271                struct device_attribute *attr, char *buf)
 272{
 273        struct pyra_device *pyra =
 274                        hid_get_drvdata(dev_get_drvdata(dev->parent->parent));
 275        struct usb_device *usb_dev = interface_to_usbdev(to_usb_interface(dev));
 276        struct pyra_settings settings;
 277
 278        mutex_lock(&pyra->pyra_lock);
 279        roccat_common2_receive(usb_dev, PYRA_COMMAND_SETTINGS,
 280                        &settings, PYRA_SIZE_SETTINGS);
 281        mutex_unlock(&pyra->pyra_lock);
 282
 283        return snprintf(buf, PAGE_SIZE, "%d\n", settings.startup_profile);
 284}
 285
 286static ssize_t pyra_sysfs_show_firmware_version(struct device *dev,
 287                struct device_attribute *attr, char *buf)
 288{
 289        struct pyra_device *pyra;
 290        struct usb_device *usb_dev;
 291        struct pyra_info info;
 292
 293        dev = dev->parent->parent;
 294        pyra = hid_get_drvdata(dev_get_drvdata(dev));
 295        usb_dev = interface_to_usbdev(to_usb_interface(dev));
 296
 297        mutex_lock(&pyra->pyra_lock);
 298        roccat_common2_receive(usb_dev, PYRA_COMMAND_INFO,
 299                        &info, PYRA_SIZE_INFO);
 300        mutex_unlock(&pyra->pyra_lock);
 301
 302        return snprintf(buf, PAGE_SIZE, "%d\n", info.firmware_version);
 303}
 304
 305static struct device_attribute pyra_attributes[] = {
 306        __ATTR(actual_cpi, 0440, pyra_sysfs_show_actual_cpi, NULL),
 307        __ATTR(actual_profile, 0440, pyra_sysfs_show_actual_profile, NULL),
 308        __ATTR(firmware_version, 0440,
 309                        pyra_sysfs_show_firmware_version, NULL),
 310        __ATTR(startup_profile, 0440,
 311                        pyra_sysfs_show_actual_profile, NULL),
 312        __ATTR_NULL
 313};
 314
 315static struct bin_attribute pyra_bin_attributes[] = {
 316        PYRA_BIN_ATTRIBUTE_W(control, CONTROL),
 317        PYRA_BIN_ATTRIBUTE_RW(info, INFO),
 318        PYRA_BIN_ATTRIBUTE_RW(profile_settings, PROFILE_SETTINGS),
 319        PYRA_BIN_ATTRIBUTE_RW(profile_buttons, PROFILE_BUTTONS),
 320        PYRA_BIN_ATTRIBUTE_RW(settings, SETTINGS),
 321        {
 322                .attr = { .name = "profile1_settings", .mode = 0440 },
 323                .size = PYRA_SIZE_PROFILE_SETTINGS,
 324                .read = pyra_sysfs_read_profilex_settings,
 325                .private = &profile_numbers[0]
 326        },
 327        {
 328                .attr = { .name = "profile2_settings", .mode = 0440 },
 329                .size = PYRA_SIZE_PROFILE_SETTINGS,
 330                .read = pyra_sysfs_read_profilex_settings,
 331                .private = &profile_numbers[1]
 332        },
 333        {
 334                .attr = { .name = "profile3_settings", .mode = 0440 },
 335                .size = PYRA_SIZE_PROFILE_SETTINGS,
 336                .read = pyra_sysfs_read_profilex_settings,
 337                .private = &profile_numbers[2]
 338        },
 339        {
 340                .attr = { .name = "profile4_settings", .mode = 0440 },
 341                .size = PYRA_SIZE_PROFILE_SETTINGS,
 342                .read = pyra_sysfs_read_profilex_settings,
 343                .private = &profile_numbers[3]
 344        },
 345        {
 346                .attr = { .name = "profile5_settings", .mode = 0440 },
 347                .size = PYRA_SIZE_PROFILE_SETTINGS,
 348                .read = pyra_sysfs_read_profilex_settings,
 349                .private = &profile_numbers[4]
 350        },
 351        {
 352                .attr = { .name = "profile1_buttons", .mode = 0440 },
 353                .size = PYRA_SIZE_PROFILE_BUTTONS,
 354                .read = pyra_sysfs_read_profilex_buttons,
 355                .private = &profile_numbers[0]
 356        },
 357        {
 358                .attr = { .name = "profile2_buttons", .mode = 0440 },
 359                .size = PYRA_SIZE_PROFILE_BUTTONS,
 360                .read = pyra_sysfs_read_profilex_buttons,
 361                .private = &profile_numbers[1]
 362        },
 363        {
 364                .attr = { .name = "profile3_buttons", .mode = 0440 },
 365                .size = PYRA_SIZE_PROFILE_BUTTONS,
 366                .read = pyra_sysfs_read_profilex_buttons,
 367                .private = &profile_numbers[2]
 368        },
 369        {
 370                .attr = { .name = "profile4_buttons", .mode = 0440 },
 371                .size = PYRA_SIZE_PROFILE_BUTTONS,
 372                .read = pyra_sysfs_read_profilex_buttons,
 373                .private = &profile_numbers[3]
 374        },
 375        {
 376                .attr = { .name = "profile5_buttons", .mode = 0440 },
 377                .size = PYRA_SIZE_PROFILE_BUTTONS,
 378                .read = pyra_sysfs_read_profilex_buttons,
 379                .private = &profile_numbers[4]
 380        },
 381        __ATTR_NULL
 382};
 383
 384static int pyra_init_pyra_device_struct(struct usb_device *usb_dev,
 385                struct pyra_device *pyra)
 386{
 387        struct pyra_settings settings;
 388        int retval, i;
 389
 390        mutex_init(&pyra->pyra_lock);
 391
 392        retval = pyra_get_settings(usb_dev, &settings);
 393        if (retval)
 394                return retval;
 395
 396        for (i = 0; i < 5; ++i) {
 397                retval = pyra_get_profile_settings(usb_dev,
 398                                &pyra->profile_settings[i], i);
 399                if (retval)
 400                        return retval;
 401        }
 402
 403        profile_activated(pyra, settings.startup_profile);
 404
 405        return 0;
 406}
 407
 408static int pyra_init_specials(struct hid_device *hdev)
 409{
 410        struct usb_interface *intf = to_usb_interface(hdev->dev.parent);
 411        struct usb_device *usb_dev = interface_to_usbdev(intf);
 412        struct pyra_device *pyra;
 413        int retval;
 414
 415        if (intf->cur_altsetting->desc.bInterfaceProtocol
 416                        == USB_INTERFACE_PROTOCOL_MOUSE) {
 417
 418                pyra = kzalloc(sizeof(*pyra), GFP_KERNEL);
 419                if (!pyra) {
 420                        hid_err(hdev, "can't alloc device descriptor\n");
 421                        return -ENOMEM;
 422                }
 423                hid_set_drvdata(hdev, pyra);
 424
 425                retval = pyra_init_pyra_device_struct(usb_dev, pyra);
 426                if (retval) {
 427                        hid_err(hdev, "couldn't init struct pyra_device\n");
 428                        goto exit_free;
 429                }
 430
 431                retval = roccat_connect(pyra_class, hdev,
 432                                sizeof(struct pyra_roccat_report));
 433                if (retval < 0) {
 434                        hid_err(hdev, "couldn't init char dev\n");
 435                } else {
 436                        pyra->chrdev_minor = retval;
 437                        pyra->roccat_claimed = 1;
 438                }
 439        } else {
 440                hid_set_drvdata(hdev, NULL);
 441        }
 442
 443        return 0;
 444exit_free:
 445        kfree(pyra);
 446        return retval;
 447}
 448
 449static void pyra_remove_specials(struct hid_device *hdev)
 450{
 451        struct usb_interface *intf = to_usb_interface(hdev->dev.parent);
 452        struct pyra_device *pyra;
 453
 454        if (intf->cur_altsetting->desc.bInterfaceProtocol
 455                        == USB_INTERFACE_PROTOCOL_MOUSE) {
 456                pyra = hid_get_drvdata(hdev);
 457                if (pyra->roccat_claimed)
 458                        roccat_disconnect(pyra->chrdev_minor);
 459                kfree(hid_get_drvdata(hdev));
 460        }
 461}
 462
 463static int pyra_probe(struct hid_device *hdev, const struct hid_device_id *id)
 464{
 465        int retval;
 466
 467        retval = hid_parse(hdev);
 468        if (retval) {
 469                hid_err(hdev, "parse failed\n");
 470                goto exit;
 471        }
 472
 473        retval = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
 474        if (retval) {
 475                hid_err(hdev, "hw start failed\n");
 476                goto exit;
 477        }
 478
 479        retval = pyra_init_specials(hdev);
 480        if (retval) {
 481                hid_err(hdev, "couldn't install mouse\n");
 482                goto exit_stop;
 483        }
 484        return 0;
 485
 486exit_stop:
 487        hid_hw_stop(hdev);
 488exit:
 489        return retval;
 490}
 491
 492static void pyra_remove(struct hid_device *hdev)
 493{
 494        pyra_remove_specials(hdev);
 495        hid_hw_stop(hdev);
 496}
 497
 498static void pyra_keep_values_up_to_date(struct pyra_device *pyra,
 499                u8 const *data)
 500{
 501        struct pyra_mouse_event_button const *button_event;
 502
 503        switch (data[0]) {
 504        case PYRA_MOUSE_REPORT_NUMBER_BUTTON:
 505                button_event = (struct pyra_mouse_event_button const *)data;
 506                switch (button_event->type) {
 507                case PYRA_MOUSE_EVENT_BUTTON_TYPE_PROFILE_2:
 508                        profile_activated(pyra, button_event->data1 - 1);
 509                        break;
 510                case PYRA_MOUSE_EVENT_BUTTON_TYPE_CPI:
 511                        pyra->actual_cpi = button_event->data1;
 512                        break;
 513                }
 514                break;
 515        }
 516}
 517
 518static void pyra_report_to_chrdev(struct pyra_device const *pyra,
 519                u8 const *data)
 520{
 521        struct pyra_roccat_report roccat_report;
 522        struct pyra_mouse_event_button const *button_event;
 523
 524        if (data[0] != PYRA_MOUSE_REPORT_NUMBER_BUTTON)
 525                return;
 526
 527        button_event = (struct pyra_mouse_event_button const *)data;
 528
 529        switch (button_event->type) {
 530        case PYRA_MOUSE_EVENT_BUTTON_TYPE_PROFILE_2:
 531        case PYRA_MOUSE_EVENT_BUTTON_TYPE_CPI:
 532                roccat_report.type = button_event->type;
 533                roccat_report.value = button_event->data1;
 534                roccat_report.key = 0;
 535                roccat_report_event(pyra->chrdev_minor,
 536                                (uint8_t const *)&roccat_report);
 537                break;
 538        case PYRA_MOUSE_EVENT_BUTTON_TYPE_MACRO:
 539        case PYRA_MOUSE_EVENT_BUTTON_TYPE_SHORTCUT:
 540        case PYRA_MOUSE_EVENT_BUTTON_TYPE_QUICKLAUNCH:
 541                if (button_event->data2 == PYRA_MOUSE_EVENT_BUTTON_PRESS) {
 542                        roccat_report.type = button_event->type;
 543                        roccat_report.key = button_event->data1;
 544                        /*
 545                         * pyra reports profile numbers with range 1-5.
 546                         * Keeping this behaviour.
 547                         */
 548                        roccat_report.value = pyra->actual_profile + 1;
 549                        roccat_report_event(pyra->chrdev_minor,
 550                                        (uint8_t const *)&roccat_report);
 551                }
 552                break;
 553        }
 554}
 555
 556static int pyra_raw_event(struct hid_device *hdev, struct hid_report *report,
 557                u8 *data, int size)
 558{
 559        struct usb_interface *intf = to_usb_interface(hdev->dev.parent);
 560        struct pyra_device *pyra = hid_get_drvdata(hdev);
 561
 562        if (intf->cur_altsetting->desc.bInterfaceProtocol
 563                        != USB_INTERFACE_PROTOCOL_MOUSE)
 564                return 0;
 565
 566        if (pyra == NULL)
 567                return 0;
 568
 569        pyra_keep_values_up_to_date(pyra, data);
 570
 571        if (pyra->roccat_claimed)
 572                pyra_report_to_chrdev(pyra, data);
 573
 574        return 0;
 575}
 576
 577static const struct hid_device_id pyra_devices[] = {
 578        { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT,
 579                        USB_DEVICE_ID_ROCCAT_PYRA_WIRED) },
 580        { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT,
 581                        USB_DEVICE_ID_ROCCAT_PYRA_WIRELESS) },
 582        { }
 583};
 584
 585MODULE_DEVICE_TABLE(hid, pyra_devices);
 586
 587static struct hid_driver pyra_driver = {
 588                .name = "pyra",
 589                .id_table = pyra_devices,
 590                .probe = pyra_probe,
 591                .remove = pyra_remove,
 592                .raw_event = pyra_raw_event
 593};
 594
 595static int __init pyra_init(void)
 596{
 597        int retval;
 598
 599        /* class name has to be same as driver name */
 600        pyra_class = class_create(THIS_MODULE, "pyra");
 601        if (IS_ERR(pyra_class))
 602                return PTR_ERR(pyra_class);
 603        pyra_class->dev_attrs = pyra_attributes;
 604        pyra_class->dev_bin_attrs = pyra_bin_attributes;
 605
 606        retval = hid_register_driver(&pyra_driver);
 607        if (retval)
 608                class_destroy(pyra_class);
 609        return retval;
 610}
 611
 612static void __exit pyra_exit(void)
 613{
 614        hid_unregister_driver(&pyra_driver);
 615        class_destroy(pyra_class);
 616}
 617
 618module_init(pyra_init);
 619module_exit(pyra_exit);
 620
 621MODULE_AUTHOR("Stefan Achatz");
 622MODULE_DESCRIPTION("USB Roccat Pyra driver");
 623MODULE_LICENSE("GPL v2");
 624
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