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, sizeof(struct pyra_profile_settings));
  70}
  71
  72static int pyra_get_profile_buttons(struct usb_device *usb_dev,
  73                struct pyra_profile_buttons *buf, int number)
  74{
  75        int retval;
  76        retval = pyra_send_control(usb_dev, number,
  77                        PYRA_CONTROL_REQUEST_PROFILE_BUTTONS);
  78        if (retval)
  79                return retval;
  80        return roccat_common2_receive(usb_dev, PYRA_COMMAND_PROFILE_BUTTONS,
  81                        buf, sizeof(struct pyra_profile_buttons));
  82}
  83
  84static int pyra_get_settings(struct usb_device *usb_dev,
  85                struct pyra_settings *buf)
  86{
  87        return roccat_common2_receive(usb_dev, PYRA_COMMAND_SETTINGS,
  88                        buf, sizeof(struct pyra_settings));
  89}
  90
  91static int pyra_get_info(struct usb_device *usb_dev, struct pyra_info *buf)
  92{
  93        return roccat_common2_receive(usb_dev, PYRA_COMMAND_INFO,
  94                        buf, sizeof(struct pyra_info));
  95}
  96
  97static int pyra_set_profile_settings(struct usb_device *usb_dev,
  98                struct pyra_profile_settings const *settings)
  99{
 100        return roccat_common2_send_with_status(usb_dev,
 101                        PYRA_COMMAND_PROFILE_SETTINGS, settings,
 102                        sizeof(struct pyra_profile_settings));
 103}
 104
 105static int pyra_set_profile_buttons(struct usb_device *usb_dev,
 106                struct pyra_profile_buttons const *buttons)
 107{
 108        return roccat_common2_send_with_status(usb_dev,
 109                        PYRA_COMMAND_PROFILE_BUTTONS, buttons,
 110                        sizeof(struct pyra_profile_buttons));
 111}
 112
 113static int pyra_set_settings(struct usb_device *usb_dev,
 114                struct pyra_settings const *settings)
 115{
 116        return roccat_common2_send_with_status(usb_dev,
 117                        PYRA_COMMAND_SETTINGS, settings,
 118                        sizeof(struct pyra_settings));
 119}
 120
 121static ssize_t pyra_sysfs_read_profilex_settings(struct file *fp,
 122                struct kobject *kobj, struct bin_attribute *attr, char *buf,
 123                loff_t off, size_t count)
 124{
 125        struct device *dev =
 126                        container_of(kobj, struct device, kobj)->parent->parent;
 127        struct pyra_device *pyra = hid_get_drvdata(dev_get_drvdata(dev));
 128
 129        if (off >= sizeof(struct pyra_profile_settings))
 130                return 0;
 131
 132        if (off + count > sizeof(struct pyra_profile_settings))
 133                count = sizeof(struct pyra_profile_settings) - off;
 134
 135        mutex_lock(&pyra->pyra_lock);
 136        memcpy(buf, ((char const *)&pyra->profile_settings[*(uint *)(attr->private)]) + off,
 137                        count);
 138        mutex_unlock(&pyra->pyra_lock);
 139
 140        return count;
 141}
 142
 143static ssize_t pyra_sysfs_read_profilex_buttons(struct file *fp,
 144                struct kobject *kobj, struct bin_attribute *attr, char *buf,
 145                loff_t off, size_t count)
 146{
 147        struct device *dev =
 148                        container_of(kobj, struct device, kobj)->parent->parent;
 149        struct pyra_device *pyra = hid_get_drvdata(dev_get_drvdata(dev));
 150
 151        if (off >= sizeof(struct pyra_profile_buttons))
 152                return 0;
 153
 154        if (off + count > sizeof(struct pyra_profile_buttons))
 155                count = sizeof(struct pyra_profile_buttons) - off;
 156
 157        mutex_lock(&pyra->pyra_lock);
 158        memcpy(buf, ((char const *)&pyra->profile_buttons[*(uint *)(attr->private)]) + off,
 159                        count);
 160        mutex_unlock(&pyra->pyra_lock);
 161
 162        return count;
 163}
 164
 165static ssize_t pyra_sysfs_write_profile_settings(struct file *fp,
 166                struct kobject *kobj, struct bin_attribute *attr, char *buf,
 167                loff_t off, size_t count)
 168{
 169        struct device *dev =
 170                        container_of(kobj, struct device, kobj)->parent->parent;
 171        struct pyra_device *pyra = hid_get_drvdata(dev_get_drvdata(dev));
 172        struct usb_device *usb_dev = interface_to_usbdev(to_usb_interface(dev));
 173        int retval = 0;
 174        int difference;
 175        int profile_number;
 176        struct pyra_profile_settings *profile_settings;
 177
 178        if (off != 0 || count != sizeof(struct pyra_profile_settings))
 179                return -EINVAL;
 180
 181        profile_number = ((struct pyra_profile_settings const *)buf)->number;
 182        profile_settings = &pyra->profile_settings[profile_number];
 183
 184        mutex_lock(&pyra->pyra_lock);
 185        difference = memcmp(buf, profile_settings,
 186                        sizeof(struct pyra_profile_settings));
 187        if (difference) {
 188                retval = pyra_set_profile_settings(usb_dev,
 189                                (struct pyra_profile_settings const *)buf);
 190                if (!retval)
 191                        memcpy(profile_settings, buf,
 192                                        sizeof(struct pyra_profile_settings));
 193        }
 194        mutex_unlock(&pyra->pyra_lock);
 195
 196        if (retval)
 197                return retval;
 198
 199        return sizeof(struct pyra_profile_settings);
 200}
 201
 202static ssize_t pyra_sysfs_write_profile_buttons(struct file *fp,
 203                struct kobject *kobj, struct bin_attribute *attr, char *buf,
 204                loff_t off, size_t count)
 205{
 206        struct device *dev =
 207                        container_of(kobj, struct device, kobj)->parent->parent;
 208        struct pyra_device *pyra = hid_get_drvdata(dev_get_drvdata(dev));
 209        struct usb_device *usb_dev = interface_to_usbdev(to_usb_interface(dev));
 210        int retval = 0;
 211        int difference;
 212        int profile_number;
 213        struct pyra_profile_buttons *profile_buttons;
 214
 215        if (off != 0 || count != sizeof(struct pyra_profile_buttons))
 216                return -EINVAL;
 217
 218        profile_number = ((struct pyra_profile_buttons const *)buf)->number;
 219        profile_buttons = &pyra->profile_buttons[profile_number];
 220
 221        mutex_lock(&pyra->pyra_lock);
 222        difference = memcmp(buf, profile_buttons,
 223                        sizeof(struct pyra_profile_buttons));
 224        if (difference) {
 225                retval = pyra_set_profile_buttons(usb_dev,
 226                                (struct pyra_profile_buttons const *)buf);
 227                if (!retval)
 228                        memcpy(profile_buttons, buf,
 229                                        sizeof(struct pyra_profile_buttons));
 230        }
 231        mutex_unlock(&pyra->pyra_lock);
 232
 233        if (retval)
 234                return retval;
 235
 236        return sizeof(struct pyra_profile_buttons);
 237}
 238
 239static ssize_t pyra_sysfs_read_settings(struct file *fp,
 240                struct kobject *kobj, struct bin_attribute *attr, char *buf,
 241                loff_t off, size_t count)
 242{
 243        struct device *dev =
 244                        container_of(kobj, struct device, kobj)->parent->parent;
 245        struct pyra_device *pyra = hid_get_drvdata(dev_get_drvdata(dev));
 246
 247        if (off >= sizeof(struct pyra_settings))
 248                return 0;
 249
 250        if (off + count > sizeof(struct pyra_settings))
 251                count = sizeof(struct pyra_settings) - off;
 252
 253        mutex_lock(&pyra->pyra_lock);
 254        memcpy(buf, ((char const *)&pyra->settings) + off, count);
 255        mutex_unlock(&pyra->pyra_lock);
 256
 257        return count;
 258}
 259
 260static ssize_t pyra_sysfs_write_settings(struct file *fp,
 261                struct kobject *kobj, struct bin_attribute *attr, char *buf,
 262                loff_t off, size_t count)
 263{
 264        struct device *dev =
 265                        container_of(kobj, struct device, kobj)->parent->parent;
 266        struct pyra_device *pyra = hid_get_drvdata(dev_get_drvdata(dev));
 267        struct usb_device *usb_dev = interface_to_usbdev(to_usb_interface(dev));
 268        int retval = 0;
 269        int difference;
 270        struct pyra_roccat_report roccat_report;
 271
 272        if (off != 0 || count != sizeof(struct pyra_settings))
 273                return -EINVAL;
 274
 275        mutex_lock(&pyra->pyra_lock);
 276        difference = memcmp(buf, &pyra->settings, sizeof(struct pyra_settings));
 277        if (difference) {
 278                retval = pyra_set_settings(usb_dev,
 279                                (struct pyra_settings const *)buf);
 280                if (retval) {
 281                        mutex_unlock(&pyra->pyra_lock);
 282                        return retval;
 283                }
 284
 285                memcpy(&pyra->settings, buf,
 286                                sizeof(struct pyra_settings));
 287
 288                profile_activated(pyra, pyra->settings.startup_profile);
 289
 290                roccat_report.type = PYRA_MOUSE_EVENT_BUTTON_TYPE_PROFILE_2;
 291                roccat_report.value = pyra->settings.startup_profile + 1;
 292                roccat_report.key = 0;
 293                roccat_report_event(pyra->chrdev_minor,
 294                                (uint8_t const *)&roccat_report);
 295        }
 296        mutex_unlock(&pyra->pyra_lock);
 297        return sizeof(struct pyra_settings);
 298}
 299
 300
 301static ssize_t pyra_sysfs_show_actual_cpi(struct device *dev,
 302                struct device_attribute *attr, char *buf)
 303{
 304        struct pyra_device *pyra =
 305                        hid_get_drvdata(dev_get_drvdata(dev->parent->parent));
 306        return snprintf(buf, PAGE_SIZE, "%d\n", pyra->actual_cpi);
 307}
 308
 309static ssize_t pyra_sysfs_show_actual_profile(struct device *dev,
 310                struct device_attribute *attr, char *buf)
 311{
 312        struct pyra_device *pyra =
 313                        hid_get_drvdata(dev_get_drvdata(dev->parent->parent));
 314        return snprintf(buf, PAGE_SIZE, "%d\n", pyra->actual_profile);
 315}
 316
 317static ssize_t pyra_sysfs_show_firmware_version(struct device *dev,
 318                struct device_attribute *attr, char *buf)
 319{
 320        struct pyra_device *pyra =
 321                        hid_get_drvdata(dev_get_drvdata(dev->parent->parent));
 322        return snprintf(buf, PAGE_SIZE, "%d\n", pyra->firmware_version);
 323}
 324
 325static ssize_t pyra_sysfs_show_startup_profile(struct device *dev,
 326                struct device_attribute *attr, char *buf)
 327{
 328        struct pyra_device *pyra =
 329                        hid_get_drvdata(dev_get_drvdata(dev->parent->parent));
 330        return snprintf(buf, PAGE_SIZE, "%d\n", pyra->settings.startup_profile);
 331}
 332
 333static struct device_attribute pyra_attributes[] = {
 334        __ATTR(actual_cpi, 0440, pyra_sysfs_show_actual_cpi, NULL),
 335        __ATTR(actual_profile, 0440, pyra_sysfs_show_actual_profile, NULL),
 336        __ATTR(firmware_version, 0440,
 337                        pyra_sysfs_show_firmware_version, NULL),
 338        __ATTR(startup_profile, 0440,
 339                        pyra_sysfs_show_startup_profile, NULL),
 340        __ATTR_NULL
 341};
 342
 343static struct bin_attribute pyra_bin_attributes[] = {
 344        {
 345                .attr = { .name = "profile_settings", .mode = 0220 },
 346                .size = sizeof(struct pyra_profile_settings),
 347                .write = pyra_sysfs_write_profile_settings
 348        },
 349        {
 350                .attr = { .name = "profile1_settings", .mode = 0440 },
 351                .size = sizeof(struct pyra_profile_settings),
 352                .read = pyra_sysfs_read_profilex_settings,
 353                .private = &profile_numbers[0]
 354        },
 355        {
 356                .attr = { .name = "profile2_settings", .mode = 0440 },
 357                .size = sizeof(struct pyra_profile_settings),
 358                .read = pyra_sysfs_read_profilex_settings,
 359                .private = &profile_numbers[1]
 360        },
 361        {
 362                .attr = { .name = "profile3_settings", .mode = 0440 },
 363                .size = sizeof(struct pyra_profile_settings),
 364                .read = pyra_sysfs_read_profilex_settings,
 365                .private = &profile_numbers[2]
 366        },
 367        {
 368                .attr = { .name = "profile4_settings", .mode = 0440 },
 369                .size = sizeof(struct pyra_profile_settings),
 370                .read = pyra_sysfs_read_profilex_settings,
 371                .private = &profile_numbers[3]
 372        },
 373        {
 374                .attr = { .name = "profile5_settings", .mode = 0440 },
 375                .size = sizeof(struct pyra_profile_settings),
 376                .read = pyra_sysfs_read_profilex_settings,
 377                .private = &profile_numbers[4]
 378        },
 379        {
 380                .attr = { .name = "profile_buttons", .mode = 0220 },
 381                .size = sizeof(struct pyra_profile_buttons),
 382                .write = pyra_sysfs_write_profile_buttons
 383        },
 384        {
 385                .attr = { .name = "profile1_buttons", .mode = 0440 },
 386                .size = sizeof(struct pyra_profile_buttons),
 387                .read = pyra_sysfs_read_profilex_buttons,
 388                .private = &profile_numbers[0]
 389        },
 390        {
 391                .attr = { .name = "profile2_buttons", .mode = 0440 },
 392                .size = sizeof(struct pyra_profile_buttons),
 393                .read = pyra_sysfs_read_profilex_buttons,
 394                .private = &profile_numbers[1]
 395        },
 396        {
 397                .attr = { .name = "profile3_buttons", .mode = 0440 },
 398                .size = sizeof(struct pyra_profile_buttons),
 399                .read = pyra_sysfs_read_profilex_buttons,
 400                .private = &profile_numbers[2]
 401        },
 402        {
 403                .attr = { .name = "profile4_buttons", .mode = 0440 },
 404                .size = sizeof(struct pyra_profile_buttons),
 405                .read = pyra_sysfs_read_profilex_buttons,
 406                .private = &profile_numbers[3]
 407        },
 408        {
 409                .attr = { .name = "profile5_buttons", .mode = 0440 },
 410                .size = sizeof(struct pyra_profile_buttons),
 411                .read = pyra_sysfs_read_profilex_buttons,
 412                .private = &profile_numbers[4]
 413        },
 414        {
 415                .attr = { .name = "settings", .mode = 0660 },
 416                .size = sizeof(struct pyra_settings),
 417                .read = pyra_sysfs_read_settings,
 418                .write = pyra_sysfs_write_settings
 419        },
 420        __ATTR_NULL
 421};
 422
 423static int pyra_init_pyra_device_struct(struct usb_device *usb_dev,
 424                struct pyra_device *pyra)
 425{
 426        struct pyra_info info;
 427        int retval, i;
 428
 429        mutex_init(&pyra->pyra_lock);
 430
 431        retval = pyra_get_info(usb_dev, &info);
 432        if (retval)
 433                return retval;
 434
 435        pyra->firmware_version = info.firmware_version;
 436
 437        retval = pyra_get_settings(usb_dev, &pyra->settings);
 438        if (retval)
 439                return retval;
 440
 441        for (i = 0; i < 5; ++i) {
 442                retval = pyra_get_profile_settings(usb_dev,
 443                                &pyra->profile_settings[i], i);
 444                if (retval)
 445                        return retval;
 446
 447                retval = pyra_get_profile_buttons(usb_dev,
 448                                &pyra->profile_buttons[i], i);
 449                if (retval)
 450                        return retval;
 451        }
 452
 453        profile_activated(pyra, pyra->settings.startup_profile);
 454
 455        return 0;
 456}
 457
 458static int pyra_init_specials(struct hid_device *hdev)
 459{
 460        struct usb_interface *intf = to_usb_interface(hdev->dev.parent);
 461        struct usb_device *usb_dev = interface_to_usbdev(intf);
 462        struct pyra_device *pyra;
 463        int retval;
 464
 465        if (intf->cur_altsetting->desc.bInterfaceProtocol
 466                        == USB_INTERFACE_PROTOCOL_MOUSE) {
 467
 468                pyra = kzalloc(sizeof(*pyra), GFP_KERNEL);
 469                if (!pyra) {
 470                        hid_err(hdev, "can't alloc device descriptor\n");
 471                        return -ENOMEM;
 472                }
 473                hid_set_drvdata(hdev, pyra);
 474
 475                retval = pyra_init_pyra_device_struct(usb_dev, pyra);
 476                if (retval) {
 477                        hid_err(hdev, "couldn't init struct pyra_device\n");
 478                        goto exit_free;
 479                }
 480
 481                retval = roccat_connect(pyra_class, hdev,
 482                                sizeof(struct pyra_roccat_report));
 483                if (retval < 0) {
 484                        hid_err(hdev, "couldn't init char dev\n");
 485                } else {
 486                        pyra->chrdev_minor = retval;
 487                        pyra->roccat_claimed = 1;
 488                }
 489        } else {
 490                hid_set_drvdata(hdev, NULL);
 491        }
 492
 493        return 0;
 494exit_free:
 495        kfree(pyra);
 496        return retval;
 497}
 498
 499static void pyra_remove_specials(struct hid_device *hdev)
 500{
 501        struct usb_interface *intf = to_usb_interface(hdev->dev.parent);
 502        struct pyra_device *pyra;
 503
 504        if (intf->cur_altsetting->desc.bInterfaceProtocol
 505                        == USB_INTERFACE_PROTOCOL_MOUSE) {
 506                pyra = hid_get_drvdata(hdev);
 507                if (pyra->roccat_claimed)
 508                        roccat_disconnect(pyra->chrdev_minor);
 509                kfree(hid_get_drvdata(hdev));
 510        }
 511}
 512
 513static int pyra_probe(struct hid_device *hdev, const struct hid_device_id *id)
 514{
 515        int retval;
 516
 517        retval = hid_parse(hdev);
 518        if (retval) {
 519                hid_err(hdev, "parse failed\n");
 520                goto exit;
 521        }
 522
 523        retval = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
 524        if (retval) {
 525                hid_err(hdev, "hw start failed\n");
 526                goto exit;
 527        }
 528
 529        retval = pyra_init_specials(hdev);
 530        if (retval) {
 531                hid_err(hdev, "couldn't install mouse\n");
 532                goto exit_stop;
 533        }
 534        return 0;
 535
 536exit_stop:
 537        hid_hw_stop(hdev);
 538exit:
 539        return retval;
 540}
 541
 542static void pyra_remove(struct hid_device *hdev)
 543{
 544        pyra_remove_specials(hdev);
 545        hid_hw_stop(hdev);
 546}
 547
 548static void pyra_keep_values_up_to_date(struct pyra_device *pyra,
 549                u8 const *data)
 550{
 551        struct pyra_mouse_event_button const *button_event;
 552
 553        switch (data[0]) {
 554        case PYRA_MOUSE_REPORT_NUMBER_BUTTON:
 555                button_event = (struct pyra_mouse_event_button const *)data;
 556                switch (button_event->type) {
 557                case PYRA_MOUSE_EVENT_BUTTON_TYPE_PROFILE_2:
 558                        profile_activated(pyra, button_event->data1 - 1);
 559                        break;
 560                case PYRA_MOUSE_EVENT_BUTTON_TYPE_CPI:
 561                        pyra->actual_cpi = button_event->data1;
 562                        break;
 563                }
 564                break;
 565        }
 566}
 567
 568static void pyra_report_to_chrdev(struct pyra_device const *pyra,
 569                u8 const *data)
 570{
 571        struct pyra_roccat_report roccat_report;
 572        struct pyra_mouse_event_button const *button_event;
 573
 574        if (data[0] != PYRA_MOUSE_REPORT_NUMBER_BUTTON)
 575                return;
 576
 577        button_event = (struct pyra_mouse_event_button const *)data;
 578
 579        switch (button_event->type) {
 580        case PYRA_MOUSE_EVENT_BUTTON_TYPE_PROFILE_2:
 581        case PYRA_MOUSE_EVENT_BUTTON_TYPE_CPI:
 582                roccat_report.type = button_event->type;
 583                roccat_report.value = button_event->data1;
 584                roccat_report.key = 0;
 585                roccat_report_event(pyra->chrdev_minor,
 586                                (uint8_t const *)&roccat_report);
 587                break;
 588        case PYRA_MOUSE_EVENT_BUTTON_TYPE_MACRO:
 589        case PYRA_MOUSE_EVENT_BUTTON_TYPE_SHORTCUT:
 590        case PYRA_MOUSE_EVENT_BUTTON_TYPE_QUICKLAUNCH:
 591                if (button_event->data2 == PYRA_MOUSE_EVENT_BUTTON_PRESS) {
 592                        roccat_report.type = button_event->type;
 593                        roccat_report.key = button_event->data1;
 594                        /*
 595                         * pyra reports profile numbers with range 1-5.
 596                         * Keeping this behaviour.
 597                         */
 598                        roccat_report.value = pyra->actual_profile + 1;
 599                        roccat_report_event(pyra->chrdev_minor,
 600                                        (uint8_t const *)&roccat_report);
 601                }
 602                break;
 603        }
 604}
 605
 606static int pyra_raw_event(struct hid_device *hdev, struct hid_report *report,
 607                u8 *data, int size)
 608{
 609        struct usb_interface *intf = to_usb_interface(hdev->dev.parent);
 610        struct pyra_device *pyra = hid_get_drvdata(hdev);
 611
 612        if (intf->cur_altsetting->desc.bInterfaceProtocol
 613                        != USB_INTERFACE_PROTOCOL_MOUSE)
 614                return 0;
 615
 616        if (pyra == NULL)
 617                return 0;
 618
 619        pyra_keep_values_up_to_date(pyra, data);
 620
 621        if (pyra->roccat_claimed)
 622                pyra_report_to_chrdev(pyra, data);
 623
 624        return 0;
 625}
 626
 627static const struct hid_device_id pyra_devices[] = {
 628        { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT,
 629                        USB_DEVICE_ID_ROCCAT_PYRA_WIRED) },
 630        { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT,
 631                        USB_DEVICE_ID_ROCCAT_PYRA_WIRELESS) },
 632        { }
 633};
 634
 635MODULE_DEVICE_TABLE(hid, pyra_devices);
 636
 637static struct hid_driver pyra_driver = {
 638                .name = "pyra",
 639                .id_table = pyra_devices,
 640                .probe = pyra_probe,
 641                .remove = pyra_remove,
 642                .raw_event = pyra_raw_event
 643};
 644
 645static int __init pyra_init(void)
 646{
 647        int retval;
 648
 649        /* class name has to be same as driver name */
 650        pyra_class = class_create(THIS_MODULE, "pyra");
 651        if (IS_ERR(pyra_class))
 652                return PTR_ERR(pyra_class);
 653        pyra_class->dev_attrs = pyra_attributes;
 654        pyra_class->dev_bin_attrs = pyra_bin_attributes;
 655
 656        retval = hid_register_driver(&pyra_driver);
 657        if (retval)
 658                class_destroy(pyra_class);
 659        return retval;
 660}
 661
 662static void __exit pyra_exit(void)
 663{
 664        hid_unregister_driver(&pyra_driver);
 665        class_destroy(pyra_class);
 666}
 667
 668module_init(pyra_init);
 669module_exit(pyra_exit);
 670
 671MODULE_AUTHOR("Stefan Achatz");
 672MODULE_DESCRIPTION("USB Roccat Pyra driver");
 673MODULE_LICENSE("GPL v2");
 674
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