drivers/hid/hid-roccat-kovaplus.c

   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2 /*
   3  * Roccat Kova[+] driver for Linux
   4  *
   5  * Copyright (c) 2011 Stefan Achatz <erazor_de@users.sourceforge.net>
   6  */
   7
   8 /*
   9  */
  10
  11 /*
  12  * Roccat Kova[+] is a bigger version of the Pyra with two more side buttons.
  13  */
  14
  15 #include <linux/device.h>
  16 #include <linux/input.h>
  17 #include <linux/hid.h>
  18 #include <linux/module.h>
  19 #include <linux/slab.h>
  20 #include <linux/hid-roccat.h>
  21 #include "hid-ids.h"
  22 #include "hid-roccat-common.h"
  23 #include "hid-roccat-kovaplus.h"
  24
  25 static uint profile_numbers[5] = {0, 1, 2, 3, 4};
  26
  27 static uint kovaplus_convert_event_cpi(uint value)
  28 {
  29         return (value == 7 ? 4 : (value == 4 ? 3 : value));
  30 }
  31
  32 static void kovaplus_profile_activated(struct kovaplus_device *kovaplus,
  33                 uint new_profile_index)
  34 {
  35         if (new_profile_index >= ARRAY_SIZE(kovaplus->profile_settings))
  36                 return;
  37         kovaplus->actual_profile = new_profile_index;
  38         kovaplus->actual_cpi = kovaplus->profile_settings[new_profile_index].cpi_startup_level;
  39         kovaplus->actual_x_sensitivity = kovaplus->profile_settings[new_profile_index].sensitivity_x;
  40         kovaplus->actual_y_sensitivity = kovaplus->profile_settings[new_profile_index].sensitivity_y;
  41 }
  42
  43 static int kovaplus_send_control(struct usb_device *usb_dev, uint value,
  44                 enum kovaplus_control_requests request)
  45 {
  46         int retval;
  47         struct roccat_common2_control control;
  48
  49         if ((request == KOVAPLUS_CONTROL_REQUEST_PROFILE_SETTINGS ||
  50                         request == KOVAPLUS_CONTROL_REQUEST_PROFILE_BUTTONS) &&
  51                         value > 4)
  52                 return -EINVAL;
  53
  54         control.command = ROCCAT_COMMON_COMMAND_CONTROL;
  55         control.value = value;
  56         control.request = request;
  57
  58         retval = roccat_common2_send(usb_dev, ROCCAT_COMMON_COMMAND_CONTROL,
  59                         &control, sizeof(struct roccat_common2_control));
  60
  61         return retval;
  62 }
  63
  64 static int kovaplus_select_profile(struct usb_device *usb_dev, uint number,
  65                 enum kovaplus_control_requests request)
  66 {
  67         return kovaplus_send_control(usb_dev, number, request);
  68 }
  69
  70 static int kovaplus_get_profile_settings(struct usb_device *usb_dev,
  71                 struct kovaplus_profile_settings *buf, uint number)
  72 {
  73         int retval;
  74
  75         retval = kovaplus_select_profile(usb_dev, number,
  76                         KOVAPLUS_CONTROL_REQUEST_PROFILE_SETTINGS);
  77         if (retval)
  78                 return retval;
  79
  80         return roccat_common2_receive(usb_dev, KOVAPLUS_COMMAND_PROFILE_SETTINGS,
  81                         buf, KOVAPLUS_SIZE_PROFILE_SETTINGS);
  82 }
  83
  84 static int kovaplus_get_profile_buttons(struct usb_device *usb_dev,
  85                 struct kovaplus_profile_buttons *buf, int number)
  86 {
  87         int retval;
  88
  89         retval = kovaplus_select_profile(usb_dev, number,
  90                         KOVAPLUS_CONTROL_REQUEST_PROFILE_BUTTONS);
  91         if (retval)
  92                 return retval;
  93
  94         return roccat_common2_receive(usb_dev, KOVAPLUS_COMMAND_PROFILE_BUTTONS,
  95                         buf, KOVAPLUS_SIZE_PROFILE_BUTTONS);
  96 }
  97
  98 /* retval is 0-4 on success, < 0 on error */
  99 static int kovaplus_get_actual_profile(struct usb_device *usb_dev)
 100 {
 101         struct kovaplus_actual_profile buf;
 102         int retval;
 103
 104         retval = roccat_common2_receive(usb_dev, KOVAPLUS_COMMAND_ACTUAL_PROFILE,
 105                         &buf, sizeof(struct kovaplus_actual_profile));
 106
 107         return retval ? retval : buf.actual_profile;
 108 }
 109
 110 static int kovaplus_set_actual_profile(struct usb_device *usb_dev,
 111                 int new_profile)
 112 {
 113         struct kovaplus_actual_profile buf;
 114
 115         buf.command = KOVAPLUS_COMMAND_ACTUAL_PROFILE;
 116         buf.size = sizeof(struct kovaplus_actual_profile);
 117         buf.actual_profile = new_profile;
 118
 119         return roccat_common2_send_with_status(usb_dev,
 120                         KOVAPLUS_COMMAND_ACTUAL_PROFILE,
 121                         &buf, sizeof(struct kovaplus_actual_profile));
 122 }
 123
 124 static ssize_t kovaplus_sysfs_read(struct file *fp, struct kobject *kobj,
 125                 char *buf, loff_t off, size_t count,
 126                 size_t real_size, uint command)
 127 {
 128         struct device *dev = kobj_to_dev(kobj)->parent->parent;
 129         struct kovaplus_device *kovaplus = hid_get_drvdata(dev_get_drvdata(dev));
 130         struct usb_device *usb_dev = interface_to_usbdev(to_usb_interface(dev));
 131         int retval;
 132
 133         if (off >= real_size)
 134                 return 0;
 135
 136         if (off != 0 || count != real_size)
 137                 return -EINVAL;
 138
 139         mutex_lock(&kovaplus->kovaplus_lock);
 140         retval = roccat_common2_receive(usb_dev, command, buf, real_size);
 141         mutex_unlock(&kovaplus->kovaplus_lock);
 142
 143         if (retval)
 144                 return retval;
 145
 146         return real_size;
 147 }
 148
 149 static ssize_t kovaplus_sysfs_write(struct file *fp, struct kobject *kobj,
 150                 void const *buf, loff_t off, size_t count,
 151                 size_t real_size, uint command)
 152 {
 153         struct device *dev = kobj_to_dev(kobj)->parent->parent;
 154         struct kovaplus_device *kovaplus = hid_get_drvdata(dev_get_drvdata(dev));
 155         struct usb_device *usb_dev = interface_to_usbdev(to_usb_interface(dev));
 156         int retval;
 157
 158         if (off != 0 || count != real_size)
 159                 return -EINVAL;
 160
 161         mutex_lock(&kovaplus->kovaplus_lock);
 162         retval = roccat_common2_send_with_status(usb_dev, command,
 163                         buf, real_size);
 164         mutex_unlock(&kovaplus->kovaplus_lock);
 165
 166         if (retval)
 167                 return retval;
 168
 169         return real_size;
 170 }
 171
 172 #define KOVAPLUS_SYSFS_W(thingy, THINGY) \
 173 static ssize_t kovaplus_sysfs_write_ ## thingy(struct file *fp, \
 174                 struct kobject *kobj, struct bin_attribute *attr, char *buf, \
 175                 loff_t off, size_t count) \
 176 { \
 177         return kovaplus_sysfs_write(fp, kobj, buf, off, count, \
 178                         KOVAPLUS_SIZE_ ## THINGY, KOVAPLUS_COMMAND_ ## THINGY); \
 179 }
 180
 181 #define KOVAPLUS_SYSFS_R(thingy, THINGY) \
 182 static ssize_t kovaplus_sysfs_read_ ## thingy(struct file *fp, \
 183                 struct kobject *kobj, struct bin_attribute *attr, char *buf, \
 184                 loff_t off, size_t count) \
 185 { \
 186         return kovaplus_sysfs_read(fp, kobj, buf, off, count, \
 187                         KOVAPLUS_SIZE_ ## THINGY, KOVAPLUS_COMMAND_ ## THINGY); \
 188 }
 189
 190 #define KOVAPLUS_SYSFS_RW(thingy, THINGY) \
 191 KOVAPLUS_SYSFS_W(thingy, THINGY) \
 192 KOVAPLUS_SYSFS_R(thingy, THINGY)
 193
 194 #define KOVAPLUS_BIN_ATTRIBUTE_RW(thingy, THINGY) \
 195 KOVAPLUS_SYSFS_RW(thingy, THINGY); \
 196 static struct bin_attribute bin_attr_##thingy = { \
 197         .attr = { .name = #thingy, .mode = 0660 }, \
 198         .size = KOVAPLUS_SIZE_ ## THINGY, \
 199         .read = kovaplus_sysfs_read_ ## thingy, \
 200         .write = kovaplus_sysfs_write_ ## thingy \
 201 }
 202
 203 #define KOVAPLUS_BIN_ATTRIBUTE_W(thingy, THINGY) \
 204 KOVAPLUS_SYSFS_W(thingy, THINGY); \
 205 static struct bin_attribute bin_attr_##thingy = { \
 206         .attr = { .name = #thingy, .mode = 0220 }, \
 207         .size = KOVAPLUS_SIZE_ ## THINGY, \
 208         .write = kovaplus_sysfs_write_ ## thingy \
 209 }
 210 KOVAPLUS_BIN_ATTRIBUTE_W(control, CONTROL);
 211 KOVAPLUS_BIN_ATTRIBUTE_RW(info, INFO);
 212 KOVAPLUS_BIN_ATTRIBUTE_RW(profile_settings, PROFILE_SETTINGS);
 213 KOVAPLUS_BIN_ATTRIBUTE_RW(profile_buttons, PROFILE_BUTTONS);
 214
 215 static ssize_t kovaplus_sysfs_read_profilex_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 = kobj_to_dev(kobj)->parent->parent;
 220         struct usb_device *usb_dev = interface_to_usbdev(to_usb_interface(dev));
 221         ssize_t retval;
 222
 223         retval = kovaplus_select_profile(usb_dev, *(uint *)(attr->private),
 224                         KOVAPLUS_CONTROL_REQUEST_PROFILE_SETTINGS);
 225         if (retval)
 226                 return retval;
 227
 228         return kovaplus_sysfs_read(fp, kobj, buf, off, count,
 229                         KOVAPLUS_SIZE_PROFILE_SETTINGS,
 230                         KOVAPLUS_COMMAND_PROFILE_SETTINGS);
 231 }
 232
 233 static ssize_t kovaplus_sysfs_read_profilex_buttons(struct file *fp,
 234                 struct kobject *kobj, struct bin_attribute *attr, char *buf,
 235                 loff_t off, size_t count)
 236 {
 237         struct device *dev = kobj_to_dev(kobj)->parent->parent;
 238         struct usb_device *usb_dev = interface_to_usbdev(to_usb_interface(dev));
 239         ssize_t retval;
 240
 241         retval = kovaplus_select_profile(usb_dev, *(uint *)(attr->private),
 242                         KOVAPLUS_CONTROL_REQUEST_PROFILE_BUTTONS);
 243         if (retval)
 244                 return retval;
 245
 246         return kovaplus_sysfs_read(fp, kobj, buf, off, count,
 247                         KOVAPLUS_SIZE_PROFILE_BUTTONS,
 248                         KOVAPLUS_COMMAND_PROFILE_BUTTONS);
 249 }
 250
 251 #define PROFILE_ATTR(number)                                            \
 252 static struct bin_attribute bin_attr_profile##number##_settings = {     \
 253         .attr = { .name = "profile" #number "_settings", .mode = 0440 },        \
 254         .size = KOVAPLUS_SIZE_PROFILE_SETTINGS,                         \
 255         .read = kovaplus_sysfs_read_profilex_settings,                  \
 256         .private = &profile_numbers[number-1],                          \
 257 };                                                                      \
 258 static struct bin_attribute bin_attr_profile##number##_buttons = {      \
 259         .attr = { .name = "profile" #number "_buttons", .mode = 0440 }, \
 260         .size = KOVAPLUS_SIZE_PROFILE_BUTTONS,                          \
 261         .read = kovaplus_sysfs_read_profilex_buttons,                   \
 262         .private = &profile_numbers[number-1],                          \
 263 };
 264 PROFILE_ATTR(1);
 265 PROFILE_ATTR(2);
 266 PROFILE_ATTR(3);
 267 PROFILE_ATTR(4);
 268 PROFILE_ATTR(5);
 269
 270 static ssize_t kovaplus_sysfs_show_actual_profile(struct device *dev,
 271                 struct device_attribute *attr, char *buf)
 272 {
 273         struct kovaplus_device *kovaplus =
 274                         hid_get_drvdata(dev_get_drvdata(dev->parent->parent));
 275         return snprintf(buf, PAGE_SIZE, "%d\n", kovaplus->actual_profile);
 276 }
 277
 278 static ssize_t kovaplus_sysfs_set_actual_profile(struct device *dev,
 279                 struct device_attribute *attr, char const *buf, size_t size)
 280 {
 281         struct kovaplus_device *kovaplus;
 282         struct usb_device *usb_dev;
 283         unsigned long profile;
 284         int retval;
 285         struct kovaplus_roccat_report roccat_report;
 286
 287         dev = dev->parent->parent;
 288         kovaplus = hid_get_drvdata(dev_get_drvdata(dev));
 289         usb_dev = interface_to_usbdev(to_usb_interface(dev));
 290
 291         retval = kstrtoul(buf, 10, &profile);
 292         if (retval)
 293                 return retval;
 294
 295         if (profile >= 5)
 296                 return -EINVAL;
 297
 298         mutex_lock(&kovaplus->kovaplus_lock);
 299         retval = kovaplus_set_actual_profile(usb_dev, profile);
 300         if (retval) {
 301                 mutex_unlock(&kovaplus->kovaplus_lock);
 302                 return retval;
 303         }
 304
 305         kovaplus_profile_activated(kovaplus, profile);
 306
 307         roccat_report.type = KOVAPLUS_MOUSE_REPORT_BUTTON_TYPE_PROFILE_1;
 308         roccat_report.profile = profile + 1;
 309         roccat_report.button = 0;
 310         roccat_report.data1 = profile + 1;
 311         roccat_report.data2 = 0;
 312         roccat_report_event(kovaplus->chrdev_minor,
 313                         (uint8_t const *)&roccat_report);
 314
 315         mutex_unlock(&kovaplus->kovaplus_lock);
 316
 317         return size;
 318 }
 319 static DEVICE_ATTR(actual_profile, 0660,
 320                    kovaplus_sysfs_show_actual_profile,
 321                    kovaplus_sysfs_set_actual_profile);
 322
 323 static ssize_t kovaplus_sysfs_show_actual_cpi(struct device *dev,
 324                 struct device_attribute *attr, char *buf)
 325 {
 326         struct kovaplus_device *kovaplus =
 327                         hid_get_drvdata(dev_get_drvdata(dev->parent->parent));
 328         return snprintf(buf, PAGE_SIZE, "%d\n", kovaplus->actual_cpi);
 329 }
 330 static DEVICE_ATTR(actual_cpi, 0440, kovaplus_sysfs_show_actual_cpi, NULL);
 331
 332 static ssize_t kovaplus_sysfs_show_actual_sensitivity_x(struct device *dev,
 333                 struct device_attribute *attr, char *buf)
 334 {
 335         struct kovaplus_device *kovaplus =
 336                         hid_get_drvdata(dev_get_drvdata(dev->parent->parent));
 337         return snprintf(buf, PAGE_SIZE, "%d\n", kovaplus->actual_x_sensitivity);
 338 }
 339 static DEVICE_ATTR(actual_sensitivity_x, 0440,
 340                    kovaplus_sysfs_show_actual_sensitivity_x, NULL);
 341
 342 static ssize_t kovaplus_sysfs_show_actual_sensitivity_y(struct device *dev,
 343                 struct device_attribute *attr, char *buf)
 344 {
 345         struct kovaplus_device *kovaplus =
 346                         hid_get_drvdata(dev_get_drvdata(dev->parent->parent));
 347         return snprintf(buf, PAGE_SIZE, "%d\n", kovaplus->actual_y_sensitivity);
 348 }
 349 static DEVICE_ATTR(actual_sensitivity_y, 0440,
 350                    kovaplus_sysfs_show_actual_sensitivity_y, NULL);
 351
 352 static ssize_t kovaplus_sysfs_show_firmware_version(struct device *dev,
 353                 struct device_attribute *attr, char *buf)
 354 {
 355         struct kovaplus_device *kovaplus;
 356         struct usb_device *usb_dev;
 357         struct kovaplus_info info;
 358
 359         dev = dev->parent->parent;
 360         kovaplus = hid_get_drvdata(dev_get_drvdata(dev));
 361         usb_dev = interface_to_usbdev(to_usb_interface(dev));
 362
 363         mutex_lock(&kovaplus->kovaplus_lock);
 364         roccat_common2_receive(usb_dev, KOVAPLUS_COMMAND_INFO,
 365                         &info, KOVAPLUS_SIZE_INFO);
 366         mutex_unlock(&kovaplus->kovaplus_lock);
 367
 368         return snprintf(buf, PAGE_SIZE, "%d\n", info.firmware_version);
 369 }
 370 static DEVICE_ATTR(firmware_version, 0440,
 371                    kovaplus_sysfs_show_firmware_version, NULL);
 372
 373 static struct attribute *kovaplus_attrs[] = {
 374         &dev_attr_actual_cpi.attr,
 375         &dev_attr_firmware_version.attr,
 376         &dev_attr_actual_profile.attr,
 377         &dev_attr_actual_sensitivity_x.attr,
 378         &dev_attr_actual_sensitivity_y.attr,
 379         NULL,
 380 };
 381
 382 static struct bin_attribute *kovaplus_bin_attributes[] = {
 383         &bin_attr_control,
 384         &bin_attr_info,
 385         &bin_attr_profile_settings,
 386         &bin_attr_profile_buttons,
 387         &bin_attr_profile1_settings,
 388         &bin_attr_profile2_settings,
 389         &bin_attr_profile3_settings,
 390         &bin_attr_profile4_settings,
 391         &bin_attr_profile5_settings,
 392         &bin_attr_profile1_buttons,
 393         &bin_attr_profile2_buttons,
 394         &bin_attr_profile3_buttons,
 395         &bin_attr_profile4_buttons,
 396         &bin_attr_profile5_buttons,
 397         NULL,
 398 };
 399
 400 static const struct attribute_group kovaplus_group = {
 401         .attrs = kovaplus_attrs,
 402         .bin_attrs = kovaplus_bin_attributes,
 403 };
 404
 405 static const struct attribute_group *kovaplus_groups[] = {
 406         &kovaplus_group,
 407         NULL,
 408 };
 409
 410 static const struct class kovaplus_class = {
 411         .name = "kovaplus",
 412         .dev_groups = kovaplus_groups,
 413 };
 414
 415 static int kovaplus_init_kovaplus_device_struct(struct usb_device *usb_dev,
 416                 struct kovaplus_device *kovaplus)
 417 {
 418         int retval, i;
 419         static uint wait = 70; /* device will freeze with just 60 */
 420
 421         mutex_init(&kovaplus->kovaplus_lock);
 422
 423         for (i = 0; i < 5; ++i) {
 424                 msleep(wait);
 425                 retval = kovaplus_get_profile_settings(usb_dev,
 426                                 &kovaplus->profile_settings[i], i);
 427                 if (retval)
 428                         return retval;
 429
 430                 msleep(wait);
 431                 retval = kovaplus_get_profile_buttons(usb_dev,
 432                                 &kovaplus->profile_buttons[i], i);
 433                 if (retval)
 434                         return retval;
 435         }
 436
 437         msleep(wait);
 438         retval = kovaplus_get_actual_profile(usb_dev);
 439         if (retval < 0)
 440                 return retval;
 441         kovaplus_profile_activated(kovaplus, retval);
 442
 443         return 0;
 444 }
 445
 446 static int kovaplus_init_specials(struct hid_device *hdev)
 447 {
 448         struct usb_interface *intf = to_usb_interface(hdev->dev.parent);
 449         struct usb_device *usb_dev = interface_to_usbdev(intf);
 450         struct kovaplus_device *kovaplus;
 451         int retval;
 452
 453         if (intf->cur_altsetting->desc.bInterfaceProtocol
 454                         == USB_INTERFACE_PROTOCOL_MOUSE) {
 455
 456                 kovaplus = kzalloc(sizeof(*kovaplus), GFP_KERNEL);
 457                 if (!kovaplus) {
 458                         hid_err(hdev, "can't alloc device descriptor\n");
 459                         return -ENOMEM;
 460                 }
 461                 hid_set_drvdata(hdev, kovaplus);
 462
 463                 retval = kovaplus_init_kovaplus_device_struct(usb_dev, kovaplus);
 464                 if (retval) {
 465                         hid_err(hdev, "couldn't init struct kovaplus_device\n");
 466                         goto exit_free;
 467                 }
 468
 469                 retval = roccat_connect(&kovaplus_class, hdev,
 470                                         sizeof(struct kovaplus_roccat_report));
 471                 if (retval < 0) {
 472                         hid_err(hdev, "couldn't init char dev\n");
 473                 } else {
 474                         kovaplus->chrdev_minor = retval;
 475                         kovaplus->roccat_claimed = 1;
 476                 }
 477
 478         } else {
 479                 hid_set_drvdata(hdev, NULL);
 480         }
 481
 482         return 0;
 483 exit_free:
 484         kfree(kovaplus);
 485         return retval;
 486 }
 487
 488 static void kovaplus_remove_specials(struct hid_device *hdev)
 489 {
 490         struct usb_interface *intf = to_usb_interface(hdev->dev.parent);
 491         struct kovaplus_device *kovaplus;
 492
 493         if (intf->cur_altsetting->desc.bInterfaceProtocol
 494                         == USB_INTERFACE_PROTOCOL_MOUSE) {
 495                 kovaplus = hid_get_drvdata(hdev);
 496                 if (kovaplus->roccat_claimed)
 497                         roccat_disconnect(kovaplus->chrdev_minor);
 498                 kfree(kovaplus);
 499         }
 500 }
 501
 502 static int kovaplus_probe(struct hid_device *hdev,
 503                 const struct hid_device_id *id)
 504 {
 505         int retval;
 506
 507         if (!hid_is_usb(hdev))
 508                 return -EINVAL;
 509
 510         retval = hid_parse(hdev);
 511         if (retval) {
 512                 hid_err(hdev, "parse failed\n");
 513                 goto exit;
 514         }
 515
 516         retval = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
 517         if (retval) {
 518                 hid_err(hdev, "hw start failed\n");
 519                 goto exit;
 520         }
 521
 522         retval = kovaplus_init_specials(hdev);
 523         if (retval) {
 524                 hid_err(hdev, "couldn't install mouse\n");
 525                 goto exit_stop;
 526         }
 527
 528         return 0;
 529
 530 exit_stop:
 531         hid_hw_stop(hdev);
 532 exit:
 533         return retval;
 534 }
 535
 536 static void kovaplus_remove(struct hid_device *hdev)
 537 {
 538         kovaplus_remove_specials(hdev);
 539         hid_hw_stop(hdev);
 540 }
 541
 542 static void kovaplus_keep_values_up_to_date(struct kovaplus_device *kovaplus,
 543                 u8 const *data)
 544 {
 545         struct kovaplus_mouse_report_button const *button_report;
 546
 547         if (data[0] != KOVAPLUS_MOUSE_REPORT_NUMBER_BUTTON)
 548                 return;
 549
 550         button_report = (struct kovaplus_mouse_report_button const *)data;
 551
 552         switch (button_report->type) {
 553         case KOVAPLUS_MOUSE_REPORT_BUTTON_TYPE_PROFILE_1:
 554                 kovaplus_profile_activated(kovaplus, button_report->data1 - 1);
 555                 break;
 556         case KOVAPLUS_MOUSE_REPORT_BUTTON_TYPE_CPI:
 557                 kovaplus->actual_cpi = kovaplus_convert_event_cpi(button_report->data1);
 558                 break;
 559         case KOVAPLUS_MOUSE_REPORT_BUTTON_TYPE_SENSITIVITY:
 560                 kovaplus->actual_x_sensitivity = button_report->data1;
 561                 kovaplus->actual_y_sensitivity = button_report->data2;
 562                 break;
 563         default:
 564                 break;
 565         }
 566 }
 567
 568 static void kovaplus_report_to_chrdev(struct kovaplus_device const *kovaplus,
 569                 u8 const *data)
 570 {
 571         struct kovaplus_roccat_report roccat_report;
 572         struct kovaplus_mouse_report_button const *button_report;
 573
 574         if (data[0] != KOVAPLUS_MOUSE_REPORT_NUMBER_BUTTON)
 575                 return;
 576
 577         button_report = (struct kovaplus_mouse_report_button const *)data;
 578
 579         if (button_report->type == KOVAPLUS_MOUSE_REPORT_BUTTON_TYPE_PROFILE_2)
 580                 return;
 581
 582         roccat_report.type = button_report->type;
 583         roccat_report.profile = kovaplus->actual_profile + 1;
 584
 585         if (roccat_report.type == KOVAPLUS_MOUSE_REPORT_BUTTON_TYPE_MACRO ||
 586                         roccat_report.type == KOVAPLUS_MOUSE_REPORT_BUTTON_TYPE_SHORTCUT ||
 587                         roccat_report.type == KOVAPLUS_MOUSE_REPORT_BUTTON_TYPE_QUICKLAUNCH ||
 588                         roccat_report.type == KOVAPLUS_MOUSE_REPORT_BUTTON_TYPE_TIMER)
 589                 roccat_report.button = button_report->data1;
 590         else
 591                 roccat_report.button = 0;
 592
 593         if (roccat_report.type == KOVAPLUS_MOUSE_REPORT_BUTTON_TYPE_CPI)
 594                 roccat_report.data1 = kovaplus_convert_event_cpi(button_report->data1);
 595         else
 596                 roccat_report.data1 = button_report->data1;
 597
 598         roccat_report.data2 = button_report->data2;
 599
 600         roccat_report_event(kovaplus->chrdev_minor,
 601                         (uint8_t const *)&roccat_report);
 602 }
 603
 604 static int kovaplus_raw_event(struct hid_device *hdev,
 605                 struct hid_report *report, u8 *data, int size)
 606 {
 607         struct usb_interface *intf = to_usb_interface(hdev->dev.parent);
 608         struct kovaplus_device *kovaplus = hid_get_drvdata(hdev);
 609
 610         if (intf->cur_altsetting->desc.bInterfaceProtocol
 611                         != USB_INTERFACE_PROTOCOL_MOUSE)
 612                 return 0;
 613
 614         if (kovaplus == NULL)
 615                 return 0;
 616
 617         kovaplus_keep_values_up_to_date(kovaplus, data);
 618
 619         if (kovaplus->roccat_claimed)
 620                 kovaplus_report_to_chrdev(kovaplus, data);
 621
 622         return 0;
 623 }
 624
 625 static const struct hid_device_id kovaplus_devices[] = {
 626         { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_KOVAPLUS) },
 627         { }
 628 };
 629
 630 MODULE_DEVICE_TABLE(hid, kovaplus_devices);
 631
 632 static struct hid_driver kovaplus_driver = {
 633                 .name = "kovaplus",
 634                 .id_table = kovaplus_devices,
 635                 .probe = kovaplus_probe,
 636                 .remove = kovaplus_remove,
 637                 .raw_event = kovaplus_raw_event
 638 };
 639
 640 static int __init kovaplus_init(void)
 641 {
 642         int retval;
 643
 644         retval = class_register(&kovaplus_class);
 645         if (retval)
 646                 return retval;
 647
 648         retval = hid_register_driver(&kovaplus_driver);
 649         if (retval)
 650                 class_unregister(&kovaplus_class);
 651         return retval;
 652 }
 653
 654 static void __exit kovaplus_exit(void)
 655 {
 656         hid_unregister_driver(&kovaplus_driver);
 657         class_unregister(&kovaplus_class);
 658 }
 659
 660 module_init(kovaplus_init);
 661 module_exit(kovaplus_exit);
 662
 663 MODULE_AUTHOR("Stefan Achatz");
 664 MODULE_DESCRIPTION("USB Roccat Kova[+] driver");
 665 MODULE_LICENSE("GPL v2");