drivers/hid/hid-roccat-kovaplus.c

   1 /*
   2  * Roccat Kova[+] driver for Linux
   3  *
   4  * Copyright (c) 2011 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 Kova[+] is a bigger version of the Pyra with two more side buttons.
  16  */
  17
  18 #include <linux/device.h>
  19 #include <linux/input.h>
  20 #include <linux/hid.h>
  21 #include <linux/module.h>
  22 #include <linux/slab.h>
  23 #include <linux/hid-roccat.h>
  24 #include "hid-ids.h"
  25 #include "hid-roccat-common.h"
  26 #include "hid-roccat-kovaplus.h"
  27
  28 static uint profile_numbers[5] = {0, 1, 2, 3, 4};
  29
  30 static struct class *kovaplus_class;
  31
  32 static uint kovaplus_convert_event_cpi(uint value)
  33 {
  34         return (value == 7 ? 4 : (value == 4 ? 3 : value));
  35 }
  36
  37 static void kovaplus_profile_activated(struct kovaplus_device *kovaplus,
  38                 uint new_profile_index)
  39 {
  40         kovaplus->actual_profile = new_profile_index;
  41         kovaplus->actual_cpi = kovaplus->profile_settings[new_profile_index].cpi_startup_level;
  42         kovaplus->actual_x_sensitivity = kovaplus->profile_settings[new_profile_index].sensitivity_x;
  43         kovaplus->actual_y_sensitivity = kovaplus->profile_settings[new_profile_index].sensitivity_y;
  44 }
  45
  46 static int kovaplus_send_control(struct usb_device *usb_dev, uint value,
  47                 enum kovaplus_control_requests request)
  48 {
  49         int retval;
  50         struct kovaplus_control control;
  51
  52         if ((request == KOVAPLUS_CONTROL_REQUEST_PROFILE_SETTINGS ||
  53                         request == KOVAPLUS_CONTROL_REQUEST_PROFILE_BUTTONS) &&
  54                         value > 4)
  55                 return -EINVAL;
  56
  57         control.command = KOVAPLUS_COMMAND_CONTROL;
  58         control.value = value;
  59         control.request = request;
  60
  61         retval = roccat_common_send(usb_dev, KOVAPLUS_USB_COMMAND_CONTROL,
  62                         &control, sizeof(struct kovaplus_control));
  63
  64         return retval;
  65 }
  66
  67 static int kovaplus_receive_control_status(struct usb_device *usb_dev)
  68 {
  69         int retval;
  70         struct kovaplus_control control;
  71
  72         do {
  73                 retval = roccat_common_receive(usb_dev, KOVAPLUS_USB_COMMAND_CONTROL,
  74                                 &control, sizeof(struct kovaplus_control));
  75
  76                 /* check if we get a completely wrong answer */
  77                 if (retval)
  78                         return retval;
  79
  80                 if (control.value == KOVAPLUS_CONTROL_REQUEST_STATUS_OK)
  81                         return 0;
  82
  83                 /* indicates that hardware needs some more time to complete action */
  84                 if (control.value == KOVAPLUS_CONTROL_REQUEST_STATUS_WAIT) {
  85                         msleep(500); /* windows driver uses 1000 */
  86                         continue;
  87                 }
  88
  89                 /* seems to be critical - replug necessary */
  90                 if (control.value == KOVAPLUS_CONTROL_REQUEST_STATUS_OVERLOAD)
  91                         return -EINVAL;
  92
  93                 hid_err(usb_dev, "kovaplus_receive_control_status: "
  94                                 "unknown response value 0x%x\n", control.value);
  95                 return -EINVAL;
  96         } while (1);
  97 }
  98
  99 static int kovaplus_send(struct usb_device *usb_dev, uint command,
 100                 void const *buf, uint size)
 101 {
 102         int retval;
 103
 104         retval = roccat_common_send(usb_dev, command, buf, size);
 105         if (retval)
 106                 return retval;
 107
 108         msleep(100);
 109
 110         return kovaplus_receive_control_status(usb_dev);
 111 }
 112
 113 static int kovaplus_select_profile(struct usb_device *usb_dev, uint number,
 114                 enum kovaplus_control_requests request)
 115 {
 116         return kovaplus_send_control(usb_dev, number, request);
 117 }
 118
 119 static int kovaplus_get_info(struct usb_device *usb_dev,
 120                 struct kovaplus_info *buf)
 121 {
 122         return roccat_common_receive(usb_dev, KOVAPLUS_USB_COMMAND_INFO,
 123                         buf, sizeof(struct kovaplus_info));
 124 }
 125
 126 static int kovaplus_get_profile_settings(struct usb_device *usb_dev,
 127                 struct kovaplus_profile_settings *buf, uint number)
 128 {
 129         int retval;
 130
 131         retval = kovaplus_select_profile(usb_dev, number,
 132                         KOVAPLUS_CONTROL_REQUEST_PROFILE_SETTINGS);
 133         if (retval)
 134                 return retval;
 135
 136         return roccat_common_receive(usb_dev, KOVAPLUS_USB_COMMAND_PROFILE_SETTINGS,
 137                         buf, sizeof(struct kovaplus_profile_settings));
 138 }
 139
 140 static int kovaplus_set_profile_settings(struct usb_device *usb_dev,
 141                 struct kovaplus_profile_settings const *settings)
 142 {
 143         return kovaplus_send(usb_dev, KOVAPLUS_USB_COMMAND_PROFILE_SETTINGS,
 144                         settings, sizeof(struct kovaplus_profile_settings));
 145 }
 146
 147 static int kovaplus_get_profile_buttons(struct usb_device *usb_dev,
 148                 struct kovaplus_profile_buttons *buf, int number)
 149 {
 150         int retval;
 151
 152         retval = kovaplus_select_profile(usb_dev, number,
 153                         KOVAPLUS_CONTROL_REQUEST_PROFILE_BUTTONS);
 154         if (retval)
 155                 return retval;
 156
 157         return roccat_common_receive(usb_dev, KOVAPLUS_USB_COMMAND_PROFILE_BUTTONS,
 158                         buf, sizeof(struct kovaplus_profile_buttons));
 159 }
 160
 161 static int kovaplus_set_profile_buttons(struct usb_device *usb_dev,
 162                 struct kovaplus_profile_buttons const *buttons)
 163 {
 164         return kovaplus_send(usb_dev, KOVAPLUS_USB_COMMAND_PROFILE_BUTTONS,
 165                         buttons, sizeof(struct kovaplus_profile_buttons));
 166 }
 167
 168 /* retval is 0-4 on success, < 0 on error */
 169 static int kovaplus_get_actual_profile(struct usb_device *usb_dev)
 170 {
 171         struct kovaplus_actual_profile buf;
 172         int retval;
 173
 174         retval = roccat_common_receive(usb_dev, KOVAPLUS_USB_COMMAND_ACTUAL_PROFILE,
 175                         &buf, sizeof(struct kovaplus_actual_profile));
 176
 177         return retval ? retval : buf.actual_profile;
 178 }
 179
 180 static int kovaplus_set_actual_profile(struct usb_device *usb_dev,
 181                 int new_profile)
 182 {
 183         struct kovaplus_actual_profile buf;
 184
 185         buf.command = KOVAPLUS_COMMAND_ACTUAL_PROFILE;
 186         buf.size = sizeof(struct kovaplus_actual_profile);
 187         buf.actual_profile = new_profile;
 188
 189         return kovaplus_send(usb_dev, KOVAPLUS_USB_COMMAND_ACTUAL_PROFILE,
 190                         &buf, sizeof(struct kovaplus_actual_profile));
 191 }
 192
 193 static ssize_t kovaplus_sysfs_read_profilex_settings(struct file *fp,
 194                 struct kobject *kobj, struct bin_attribute *attr, char *buf,
 195                 loff_t off, size_t count)
 196 {
 197         struct device *dev =
 198                         container_of(kobj, struct device, kobj)->parent->parent;
 199         struct kovaplus_device *kovaplus = hid_get_drvdata(dev_get_drvdata(dev));
 200
 201         if (off >= sizeof(struct kovaplus_profile_settings))
 202                 return 0;
 203
 204         if (off + count > sizeof(struct kovaplus_profile_settings))
 205                 count = sizeof(struct kovaplus_profile_settings) - off;
 206
 207         mutex_lock(&kovaplus->kovaplus_lock);
 208         memcpy(buf, ((char const *)&kovaplus->profile_settings[*(uint *)(attr->private)]) + off,
 209                         count);
 210         mutex_unlock(&kovaplus->kovaplus_lock);
 211
 212         return count;
 213 }
 214
 215 static ssize_t kovaplus_sysfs_write_profile_settings(struct file *fp,
 216                 struct kobject *kobj, struct bin_attribute *attr, char *buf,
 217                 loff_t off, size_t count)
 218 {
 219         struct device *dev =
 220                         container_of(kobj, struct device, kobj)->parent->parent;
 221         struct kovaplus_device *kovaplus = hid_get_drvdata(dev_get_drvdata(dev));
 222         struct usb_device *usb_dev = interface_to_usbdev(to_usb_interface(dev));
 223         int retval = 0;
 224         int difference;
 225         int profile_index;
 226         struct kovaplus_profile_settings *profile_settings;
 227
 228         if (off != 0 || count != sizeof(struct kovaplus_profile_settings))
 229                 return -EINVAL;
 230
 231         profile_index = ((struct kovaplus_profile_settings const *)buf)->profile_index;
 232         profile_settings = &kovaplus->profile_settings[profile_index];
 233
 234         mutex_lock(&kovaplus->kovaplus_lock);
 235         difference = memcmp(buf, profile_settings,
 236                         sizeof(struct kovaplus_profile_settings));
 237         if (difference) {
 238                 retval = kovaplus_set_profile_settings(usb_dev,
 239                                 (struct kovaplus_profile_settings const *)buf);
 240                 if (!retval)
 241                         memcpy(profile_settings, buf,
 242                                         sizeof(struct kovaplus_profile_settings));
 243         }
 244         mutex_unlock(&kovaplus->kovaplus_lock);
 245
 246         if (retval)
 247                 return retval;
 248
 249         return sizeof(struct kovaplus_profile_settings);
 250 }
 251
 252 static ssize_t kovaplus_sysfs_read_profilex_buttons(struct file *fp,
 253                 struct kobject *kobj, struct bin_attribute *attr, char *buf,
 254                 loff_t off, size_t count)
 255 {
 256         struct device *dev =
 257                         container_of(kobj, struct device, kobj)->parent->parent;
 258         struct kovaplus_device *kovaplus = hid_get_drvdata(dev_get_drvdata(dev));
 259
 260         if (off >= sizeof(struct kovaplus_profile_buttons))
 261                 return 0;
 262
 263         if (off + count > sizeof(struct kovaplus_profile_buttons))
 264                 count = sizeof(struct kovaplus_profile_buttons) - off;
 265
 266         mutex_lock(&kovaplus->kovaplus_lock);
 267         memcpy(buf, ((char const *)&kovaplus->profile_buttons[*(uint *)(attr->private)]) + off,
 268                         count);
 269         mutex_unlock(&kovaplus->kovaplus_lock);
 270
 271         return count;
 272 }
 273
 274 static ssize_t kovaplus_sysfs_write_profile_buttons(struct file *fp,
 275                 struct kobject *kobj, struct bin_attribute *attr, char *buf,
 276                 loff_t off, size_t count)
 277 {
 278         struct device *dev =
 279                         container_of(kobj, struct device, kobj)->parent->parent;
 280         struct kovaplus_device *kovaplus = hid_get_drvdata(dev_get_drvdata(dev));
 281         struct usb_device *usb_dev = interface_to_usbdev(to_usb_interface(dev));
 282         int retval = 0;
 283         int difference;
 284         uint profile_index;
 285         struct kovaplus_profile_buttons *profile_buttons;
 286
 287         if (off != 0 || count != sizeof(struct kovaplus_profile_buttons))
 288                 return -EINVAL;
 289
 290         profile_index = ((struct kovaplus_profile_buttons const *)buf)->profile_index;
 291         profile_buttons = &kovaplus->profile_buttons[profile_index];
 292
 293         mutex_lock(&kovaplus->kovaplus_lock);
 294         difference = memcmp(buf, profile_buttons,
 295                         sizeof(struct kovaplus_profile_buttons));
 296         if (difference) {
 297                 retval = kovaplus_set_profile_buttons(usb_dev,
 298                                 (struct kovaplus_profile_buttons const *)buf);
 299                 if (!retval)
 300                         memcpy(profile_buttons, buf,
 301                                         sizeof(struct kovaplus_profile_buttons));
 302         }
 303         mutex_unlock(&kovaplus->kovaplus_lock);
 304
 305         if (retval)
 306                 return retval;
 307
 308         return sizeof(struct kovaplus_profile_buttons);
 309 }
 310
 311 static ssize_t kovaplus_sysfs_show_actual_profile(struct device *dev,
 312                 struct device_attribute *attr, char *buf)
 313 {
 314         struct kovaplus_device *kovaplus =
 315                         hid_get_drvdata(dev_get_drvdata(dev->parent->parent));
 316         return snprintf(buf, PAGE_SIZE, "%d\n", kovaplus->actual_profile);
 317 }
 318
 319 static ssize_t kovaplus_sysfs_set_actual_profile(struct device *dev,
 320                 struct device_attribute *attr, char const *buf, size_t size)
 321 {
 322         struct kovaplus_device *kovaplus;
 323         struct usb_device *usb_dev;
 324         unsigned long profile;
 325         int retval;
 326
 327         dev = dev->parent->parent;
 328         kovaplus = hid_get_drvdata(dev_get_drvdata(dev));
 329         usb_dev = interface_to_usbdev(to_usb_interface(dev));
 330
 331         retval = strict_strtoul(buf, 10, &profile);
 332         if (retval)
 333                 return retval;
 334
 335         if (profile >= 5)
 336                 return -EINVAL;
 337
 338         mutex_lock(&kovaplus->kovaplus_lock);
 339         retval = kovaplus_set_actual_profile(usb_dev, profile);
 340         kovaplus->actual_profile = profile;
 341         mutex_unlock(&kovaplus->kovaplus_lock);
 342         if (retval)
 343                 return retval;
 344
 345         return size;
 346 }
 347
 348 static ssize_t kovaplus_sysfs_show_actual_cpi(struct device *dev,
 349                 struct device_attribute *attr, char *buf)
 350 {
 351         struct kovaplus_device *kovaplus =
 352                         hid_get_drvdata(dev_get_drvdata(dev->parent->parent));
 353         return snprintf(buf, PAGE_SIZE, "%d\n", kovaplus->actual_cpi);
 354 }
 355
 356 static ssize_t kovaplus_sysfs_show_actual_sensitivity_x(struct device *dev,
 357                 struct device_attribute *attr, char *buf)
 358 {
 359         struct kovaplus_device *kovaplus =
 360                         hid_get_drvdata(dev_get_drvdata(dev->parent->parent));
 361         return snprintf(buf, PAGE_SIZE, "%d\n", kovaplus->actual_x_sensitivity);
 362 }
 363
 364 static ssize_t kovaplus_sysfs_show_actual_sensitivity_y(struct device *dev,
 365                 struct device_attribute *attr, char *buf)
 366 {
 367         struct kovaplus_device *kovaplus =
 368                         hid_get_drvdata(dev_get_drvdata(dev->parent->parent));
 369         return snprintf(buf, PAGE_SIZE, "%d\n", kovaplus->actual_y_sensitivity);
 370 }
 371
 372 static ssize_t kovaplus_sysfs_show_firmware_version(struct device *dev,
 373                 struct device_attribute *attr, char *buf)
 374 {
 375         struct kovaplus_device *kovaplus =
 376                         hid_get_drvdata(dev_get_drvdata(dev->parent->parent));
 377         return snprintf(buf, PAGE_SIZE, "%d\n", kovaplus->info.firmware_version);
 378 }
 379
 380 static struct device_attribute kovaplus_attributes[] = {
 381         __ATTR(actual_cpi, 0440,
 382                 kovaplus_sysfs_show_actual_cpi, NULL),
 383         __ATTR(firmware_version, 0440,
 384                 kovaplus_sysfs_show_firmware_version, NULL),
 385         __ATTR(actual_profile, 0660,
 386                 kovaplus_sysfs_show_actual_profile,
 387                 kovaplus_sysfs_set_actual_profile),
 388         __ATTR(actual_sensitivity_x, 0440,
 389                 kovaplus_sysfs_show_actual_sensitivity_x, NULL),
 390         __ATTR(actual_sensitivity_y, 0440,
 391                 kovaplus_sysfs_show_actual_sensitivity_y, NULL),
 392         __ATTR_NULL
 393 };
 394
 395 static struct bin_attribute kovaplus_bin_attributes[] = {
 396         {
 397                 .attr = { .name = "profile_settings", .mode = 0220 },
 398                 .size = sizeof(struct kovaplus_profile_settings),
 399                 .write = kovaplus_sysfs_write_profile_settings
 400         },
 401         {
 402                 .attr = { .name = "profile1_settings", .mode = 0440 },
 403                 .size = sizeof(struct kovaplus_profile_settings),
 404                 .read = kovaplus_sysfs_read_profilex_settings,
 405                 .private = &profile_numbers[0]
 406         },
 407         {
 408                 .attr = { .name = "profile2_settings", .mode = 0440 },
 409                 .size = sizeof(struct kovaplus_profile_settings),
 410                 .read = kovaplus_sysfs_read_profilex_settings,
 411                 .private = &profile_numbers[1]
 412         },
 413         {
 414                 .attr = { .name = "profile3_settings", .mode = 0440 },
 415                 .size = sizeof(struct kovaplus_profile_settings),
 416                 .read = kovaplus_sysfs_read_profilex_settings,
 417                 .private = &profile_numbers[2]
 418         },
 419         {
 420                 .attr = { .name = "profile4_settings", .mode = 0440 },
 421                 .size = sizeof(struct kovaplus_profile_settings),
 422                 .read = kovaplus_sysfs_read_profilex_settings,
 423                 .private = &profile_numbers[3]
 424         },
 425         {
 426                 .attr = { .name = "profile5_settings", .mode = 0440 },
 427                 .size = sizeof(struct kovaplus_profile_settings),
 428                 .read = kovaplus_sysfs_read_profilex_settings,
 429                 .private = &profile_numbers[4]
 430         },
 431         {
 432                 .attr = { .name = "profile_buttons", .mode = 0220 },
 433                 .size = sizeof(struct kovaplus_profile_buttons),
 434                 .write = kovaplus_sysfs_write_profile_buttons
 435         },
 436         {
 437                 .attr = { .name = "profile1_buttons", .mode = 0440 },
 438                 .size = sizeof(struct kovaplus_profile_buttons),
 439                 .read = kovaplus_sysfs_read_profilex_buttons,
 440                 .private = &profile_numbers[0]
 441         },
 442         {
 443                 .attr = { .name = "profile2_buttons", .mode = 0440 },
 444                 .size = sizeof(struct kovaplus_profile_buttons),
 445                 .read = kovaplus_sysfs_read_profilex_buttons,
 446                 .private = &profile_numbers[1]
 447         },
 448         {
 449                 .attr = { .name = "profile3_buttons", .mode = 0440 },
 450                 .size = sizeof(struct kovaplus_profile_buttons),
 451                 .read = kovaplus_sysfs_read_profilex_buttons,
 452                 .private = &profile_numbers[2]
 453         },
 454         {
 455                 .attr = { .name = "profile4_buttons", .mode = 0440 },
 456                 .size = sizeof(struct kovaplus_profile_buttons),
 457                 .read = kovaplus_sysfs_read_profilex_buttons,
 458                 .private = &profile_numbers[3]
 459         },
 460         {
 461                 .attr = { .name = "profile5_buttons", .mode = 0440 },
 462                 .size = sizeof(struct kovaplus_profile_buttons),
 463                 .read = kovaplus_sysfs_read_profilex_buttons,
 464                 .private = &profile_numbers[4]
 465         },
 466         __ATTR_NULL
 467 };
 468
 469 static int kovaplus_init_kovaplus_device_struct(struct usb_device *usb_dev,
 470                 struct kovaplus_device *kovaplus)
 471 {
 472         int retval, i;
 473         static uint wait = 70; /* device will freeze with just 60 */
 474
 475         mutex_init(&kovaplus->kovaplus_lock);
 476
 477         retval = kovaplus_get_info(usb_dev, &kovaplus->info);
 478         if (retval)
 479                 return retval;
 480
 481         for (i = 0; i < 5; ++i) {
 482                 msleep(wait);
 483                 retval = kovaplus_get_profile_settings(usb_dev,
 484                                 &kovaplus->profile_settings[i], i);
 485                 if (retval)
 486                         return retval;
 487
 488                 msleep(wait);
 489                 retval = kovaplus_get_profile_buttons(usb_dev,
 490                                 &kovaplus->profile_buttons[i], i);
 491                 if (retval)
 492                         return retval;
 493         }
 494
 495         msleep(wait);
 496         retval = kovaplus_get_actual_profile(usb_dev);
 497         if (retval < 0)
 498                 return retval;
 499         kovaplus_profile_activated(kovaplus, retval);
 500
 501         return 0;
 502 }
 503
 504 static int kovaplus_init_specials(struct hid_device *hdev)
 505 {
 506         struct usb_interface *intf = to_usb_interface(hdev->dev.parent);
 507         struct usb_device *usb_dev = interface_to_usbdev(intf);
 508         struct kovaplus_device *kovaplus;
 509         int retval;
 510
 511         if (intf->cur_altsetting->desc.bInterfaceProtocol
 512                         == USB_INTERFACE_PROTOCOL_MOUSE) {
 513
 514                 kovaplus = kzalloc(sizeof(*kovaplus), GFP_KERNEL);
 515                 if (!kovaplus) {
 516                         hid_err(hdev, "can't alloc device descriptor\n");
 517                         return -ENOMEM;
 518                 }
 519                 hid_set_drvdata(hdev, kovaplus);
 520
 521                 retval = kovaplus_init_kovaplus_device_struct(usb_dev, kovaplus);
 522                 if (retval) {
 523                         hid_err(hdev, "couldn't init struct kovaplus_device\n");
 524                         goto exit_free;
 525                 }
 526
 527                 retval = roccat_connect(kovaplus_class, hdev,
 528                                 sizeof(struct kovaplus_roccat_report));
 529                 if (retval < 0) {
 530                         hid_err(hdev, "couldn't init char dev\n");
 531                 } else {
 532                         kovaplus->chrdev_minor = retval;
 533                         kovaplus->roccat_claimed = 1;
 534                 }
 535
 536         } else {
 537                 hid_set_drvdata(hdev, NULL);
 538         }
 539
 540         return 0;
 541 exit_free:
 542         kfree(kovaplus);
 543         return retval;
 544 }
 545
 546 static void kovaplus_remove_specials(struct hid_device *hdev)
 547 {
 548         struct usb_interface *intf = to_usb_interface(hdev->dev.parent);
 549         struct kovaplus_device *kovaplus;
 550
 551         if (intf->cur_altsetting->desc.bInterfaceProtocol
 552                         == USB_INTERFACE_PROTOCOL_MOUSE) {
 553                 kovaplus = hid_get_drvdata(hdev);
 554                 if (kovaplus->roccat_claimed)
 555                         roccat_disconnect(kovaplus->chrdev_minor);
 556                 kfree(kovaplus);
 557         }
 558 }
 559
 560 static int kovaplus_probe(struct hid_device *hdev,
 561                 const struct hid_device_id *id)
 562 {
 563         int retval;
 564
 565         retval = hid_parse(hdev);
 566         if (retval) {
 567                 hid_err(hdev, "parse failed\n");
 568                 goto exit;
 569         }
 570
 571         retval = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
 572         if (retval) {
 573                 hid_err(hdev, "hw start failed\n");
 574                 goto exit;
 575         }
 576
 577         retval = kovaplus_init_specials(hdev);
 578         if (retval) {
 579                 hid_err(hdev, "couldn't install mouse\n");
 580                 goto exit_stop;
 581         }
 582
 583         return 0;
 584
 585 exit_stop:
 586         hid_hw_stop(hdev);
 587 exit:
 588         return retval;
 589 }
 590
 591 static void kovaplus_remove(struct hid_device *hdev)
 592 {
 593         kovaplus_remove_specials(hdev);
 594         hid_hw_stop(hdev);
 595 }
 596
 597 static void kovaplus_keep_values_up_to_date(struct kovaplus_device *kovaplus,
 598                 u8 const *data)
 599 {
 600         struct kovaplus_mouse_report_button const *button_report;
 601
 602         if (data[0] != KOVAPLUS_MOUSE_REPORT_NUMBER_BUTTON)
 603                 return;
 604
 605         button_report = (struct kovaplus_mouse_report_button const *)data;
 606
 607         switch (button_report->type) {
 608         case KOVAPLUS_MOUSE_REPORT_BUTTON_TYPE_PROFILE_1:
 609                 kovaplus_profile_activated(kovaplus, button_report->data1 - 1);
 610                 break;
 611         case KOVAPLUS_MOUSE_REPORT_BUTTON_TYPE_CPI:
 612                 kovaplus->actual_cpi = kovaplus_convert_event_cpi(button_report->data1);
 613         case KOVAPLUS_MOUSE_REPORT_BUTTON_TYPE_SENSITIVITY:
 614                 kovaplus->actual_x_sensitivity = button_report->data1;
 615                 kovaplus->actual_y_sensitivity = button_report->data2;
 616         }
 617 }
 618
 619 static void kovaplus_report_to_chrdev(struct kovaplus_device const *kovaplus,
 620                 u8 const *data)
 621 {
 622         struct kovaplus_roccat_report roccat_report;
 623         struct kovaplus_mouse_report_button const *button_report;
 624
 625         if (data[0] != KOVAPLUS_MOUSE_REPORT_NUMBER_BUTTON)
 626                 return;
 627
 628         button_report = (struct kovaplus_mouse_report_button const *)data;
 629
 630         if (button_report->type == KOVAPLUS_MOUSE_REPORT_BUTTON_TYPE_PROFILE_2)
 631                 return;
 632
 633         roccat_report.type = button_report->type;
 634         roccat_report.profile = kovaplus->actual_profile + 1;
 635
 636         if (roccat_report.type == KOVAPLUS_MOUSE_REPORT_BUTTON_TYPE_MACRO ||
 637                         roccat_report.type == KOVAPLUS_MOUSE_REPORT_BUTTON_TYPE_SHORTCUT ||
 638                         roccat_report.type == KOVAPLUS_MOUSE_REPORT_BUTTON_TYPE_QUICKLAUNCH ||
 639                         roccat_report.type == KOVAPLUS_MOUSE_REPORT_BUTTON_TYPE_TIMER)
 640                 roccat_report.button = button_report->data1;
 641         else
 642                 roccat_report.button = 0;
 643
 644         if (roccat_report.type == KOVAPLUS_MOUSE_REPORT_BUTTON_TYPE_CPI)
 645                 roccat_report.data1 = kovaplus_convert_event_cpi(button_report->data1);
 646         else
 647                 roccat_report.data1 = button_report->data1;
 648
 649         roccat_report.data2 = button_report->data2;
 650
 651         roccat_report_event(kovaplus->chrdev_minor,
 652                         (uint8_t const *)&roccat_report);
 653 }
 654
 655 static int kovaplus_raw_event(struct hid_device *hdev,
 656                 struct hid_report *report, u8 *data, int size)
 657 {
 658         struct usb_interface *intf = to_usb_interface(hdev->dev.parent);
 659         struct kovaplus_device *kovaplus = hid_get_drvdata(hdev);
 660
 661         if (intf->cur_altsetting->desc.bInterfaceProtocol
 662                         != USB_INTERFACE_PROTOCOL_MOUSE)
 663                 return 0;
 664
 665         kovaplus_keep_values_up_to_date(kovaplus, data);
 666
 667         if (kovaplus->roccat_claimed)
 668                 kovaplus_report_to_chrdev(kovaplus, data);
 669
 670         return 0;
 671 }
 672
 673 static const struct hid_device_id kovaplus_devices[] = {
 674         { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_KOVAPLUS) },
 675         { }
 676 };
 677
 678 MODULE_DEVICE_TABLE(hid, kovaplus_devices);
 679
 680 static struct hid_driver kovaplus_driver = {
 681                 .name = "kovaplus",
 682                 .id_table = kovaplus_devices,
 683                 .probe = kovaplus_probe,
 684                 .remove = kovaplus_remove,
 685                 .raw_event = kovaplus_raw_event
 686 };
 687
 688 static int __init kovaplus_init(void)
 689 {
 690         int retval;
 691
 692         kovaplus_class = class_create(THIS_MODULE, "kovaplus");
 693         if (IS_ERR(kovaplus_class))
 694                 return PTR_ERR(kovaplus_class);
 695         kovaplus_class->dev_attrs = kovaplus_attributes;
 696         kovaplus_class->dev_bin_attrs = kovaplus_bin_attributes;
 697
 698         retval = hid_register_driver(&kovaplus_driver);
 699         if (retval)
 700                 class_destroy(kovaplus_class);
 701         return retval;
 702 }
 703
 704 static void __exit kovaplus_exit(void)
 705 {
 706         hid_unregister_driver(&kovaplus_driver);
 707         class_destroy(kovaplus_class);
 708 }
 709
 710 module_init(kovaplus_init);
 711 module_exit(kovaplus_exit);
 712
 713 MODULE_AUTHOR("Stefan Achatz");
 714 MODULE_DESCRIPTION("USB Roccat Kova[+] driver");
 715 MODULE_LICENSE("GPL v2");