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         if (new_profile_index >= ARRAY_SIZE(kovaplus->profile_settings))
  41                 return;
  42         kovaplus->actual_profile = new_profile_index;
  43         kovaplus->actual_cpi = kovaplus->profile_settings[new_profile_index].cpi_startup_level;
  44         kovaplus->actual_x_sensitivity = kovaplus->profile_settings[new_profile_index].sensitivity_x;
  45         kovaplus->actual_y_sensitivity = kovaplus->profile_settings[new_profile_index].sensitivity_y;
  46 }
  47
  48 static int kovaplus_send_control(struct usb_device *usb_dev, uint value,
  49                 enum kovaplus_control_requests request)
  50 {
  51         int retval;
  52         struct kovaplus_control control;
  53
  54         if ((request == KOVAPLUS_CONTROL_REQUEST_PROFILE_SETTINGS ||
  55                         request == KOVAPLUS_CONTROL_REQUEST_PROFILE_BUTTONS) &&
  56                         value > 4)
  57                 return -EINVAL;
  58
  59         control.command = KOVAPLUS_COMMAND_CONTROL;
  60         control.value = value;
  61         control.request = request;
  62
  63         retval = roccat_common_send(usb_dev, KOVAPLUS_COMMAND_CONTROL,
  64                         &control, sizeof(struct kovaplus_control));
  65
  66         return retval;
  67 }
  68
  69 static int kovaplus_receive_control_status(struct usb_device *usb_dev)
  70 {
  71         int retval;
  72         struct kovaplus_control control;
  73
  74         do {
  75                 retval = roccat_common_receive(usb_dev, KOVAPLUS_COMMAND_CONTROL,
  76                                 &control, sizeof(struct kovaplus_control));
  77
  78                 /* check if we get a completely wrong answer */
  79                 if (retval)
  80                         return retval;
  81
  82                 if (control.value == KOVAPLUS_CONTROL_REQUEST_STATUS_OK)
  83                         return 0;
  84
  85                 /* indicates that hardware needs some more time to complete action */
  86                 if (control.value == KOVAPLUS_CONTROL_REQUEST_STATUS_WAIT) {
  87                         msleep(500); /* windows driver uses 1000 */
  88                         continue;
  89                 }
  90
  91                 /* seems to be critical - replug necessary */
  92                 if (control.value == KOVAPLUS_CONTROL_REQUEST_STATUS_OVERLOAD)
  93                         return -EINVAL;
  94
  95                 hid_err(usb_dev, "roccat_common_receive_control_status: "
  96                                 "unknown response value 0x%x\n", control.value);
  97                 return -EINVAL;
  98         } while (1);
  99 }
 100
 101 static int kovaplus_send(struct usb_device *usb_dev, uint command,
 102                 void const *buf, uint size)
 103 {
 104         int retval;
 105
 106         retval = roccat_common_send(usb_dev, command, buf, size);
 107         if (retval)
 108                 return retval;
 109
 110         msleep(100);
 111
 112         return kovaplus_receive_control_status(usb_dev);
 113 }
 114
 115 static int kovaplus_select_profile(struct usb_device *usb_dev, uint number,
 116                 enum kovaplus_control_requests request)
 117 {
 118         return kovaplus_send_control(usb_dev, number, request);
 119 }
 120
 121 static int kovaplus_get_info(struct usb_device *usb_dev,
 122                 struct kovaplus_info *buf)
 123 {
 124         return roccat_common_receive(usb_dev, KOVAPLUS_COMMAND_INFO,
 125                         buf, sizeof(struct kovaplus_info));
 126 }
 127
 128 static int kovaplus_get_profile_settings(struct usb_device *usb_dev,
 129                 struct kovaplus_profile_settings *buf, uint number)
 130 {
 131         int retval;
 132
 133         retval = kovaplus_select_profile(usb_dev, number,
 134                         KOVAPLUS_CONTROL_REQUEST_PROFILE_SETTINGS);
 135         if (retval)
 136                 return retval;
 137
 138         return roccat_common_receive(usb_dev, KOVAPLUS_COMMAND_PROFILE_SETTINGS,
 139                         buf, sizeof(struct kovaplus_profile_settings));
 140 }
 141
 142 static int kovaplus_set_profile_settings(struct usb_device *usb_dev,
 143                 struct kovaplus_profile_settings const *settings)
 144 {
 145         return kovaplus_send(usb_dev, KOVAPLUS_COMMAND_PROFILE_SETTINGS,
 146                         settings, sizeof(struct kovaplus_profile_settings));
 147 }
 148
 149 static int kovaplus_get_profile_buttons(struct usb_device *usb_dev,
 150                 struct kovaplus_profile_buttons *buf, int number)
 151 {
 152         int retval;
 153
 154         retval = kovaplus_select_profile(usb_dev, number,
 155                         KOVAPLUS_CONTROL_REQUEST_PROFILE_BUTTONS);
 156         if (retval)
 157                 return retval;
 158
 159         return roccat_common_receive(usb_dev, KOVAPLUS_COMMAND_PROFILE_BUTTONS,
 160                         buf, sizeof(struct kovaplus_profile_buttons));
 161 }
 162
 163 static int kovaplus_set_profile_buttons(struct usb_device *usb_dev,
 164                 struct kovaplus_profile_buttons const *buttons)
 165 {
 166         return kovaplus_send(usb_dev, KOVAPLUS_COMMAND_PROFILE_BUTTONS,
 167                         buttons, sizeof(struct kovaplus_profile_buttons));
 168 }
 169
 170 /* retval is 0-4 on success, < 0 on error */
 171 static int kovaplus_get_actual_profile(struct usb_device *usb_dev)
 172 {
 173         struct kovaplus_actual_profile buf;
 174         int retval;
 175
 176         retval = roccat_common_receive(usb_dev, KOVAPLUS_COMMAND_ACTUAL_PROFILE,
 177                         &buf, sizeof(struct kovaplus_actual_profile));
 178
 179         return retval ? retval : buf.actual_profile;
 180 }
 181
 182 static int kovaplus_set_actual_profile(struct usb_device *usb_dev,
 183                 int new_profile)
 184 {
 185         struct kovaplus_actual_profile buf;
 186
 187         buf.command = KOVAPLUS_COMMAND_ACTUAL_PROFILE;
 188         buf.size = sizeof(struct kovaplus_actual_profile);
 189         buf.actual_profile = new_profile;
 190
 191         return kovaplus_send(usb_dev, KOVAPLUS_COMMAND_ACTUAL_PROFILE,
 192                         &buf, sizeof(struct kovaplus_actual_profile));
 193 }
 194
 195 static ssize_t kovaplus_sysfs_read_profilex_settings(struct file *fp,
 196                 struct kobject *kobj, struct bin_attribute *attr, char *buf,
 197                 loff_t off, size_t count)
 198 {
 199         struct device *dev =
 200                         container_of(kobj, struct device, kobj)->parent->parent;
 201         struct kovaplus_device *kovaplus = hid_get_drvdata(dev_get_drvdata(dev));
 202
 203         if (off >= sizeof(struct kovaplus_profile_settings))
 204                 return 0;
 205
 206         if (off + count > sizeof(struct kovaplus_profile_settings))
 207                 count = sizeof(struct kovaplus_profile_settings) - off;
 208
 209         mutex_lock(&kovaplus->kovaplus_lock);
 210         memcpy(buf, ((char const *)&kovaplus->profile_settings[*(uint *)(attr->private)]) + off,
 211                         count);
 212         mutex_unlock(&kovaplus->kovaplus_lock);
 213
 214         return count;
 215 }
 216
 217 static ssize_t kovaplus_sysfs_write_profile_settings(struct file *fp,
 218                 struct kobject *kobj, struct bin_attribute *attr, char *buf,
 219                 loff_t off, size_t count)
 220 {
 221         struct device *dev =
 222                         container_of(kobj, struct device, kobj)->parent->parent;
 223         struct kovaplus_device *kovaplus = hid_get_drvdata(dev_get_drvdata(dev));
 224         struct usb_device *usb_dev = interface_to_usbdev(to_usb_interface(dev));
 225         int retval = 0;
 226         int difference;
 227         int profile_index;
 228         struct kovaplus_profile_settings *profile_settings;
 229
 230         if (off != 0 || count != sizeof(struct kovaplus_profile_settings))
 231                 return -EINVAL;
 232
 233         profile_index = ((struct kovaplus_profile_settings const *)buf)->profile_index;
 234         profile_settings = &kovaplus->profile_settings[profile_index];
 235
 236         mutex_lock(&kovaplus->kovaplus_lock);
 237         difference = memcmp(buf, profile_settings,
 238                         sizeof(struct kovaplus_profile_settings));
 239         if (difference) {
 240                 retval = kovaplus_set_profile_settings(usb_dev,
 241                                 (struct kovaplus_profile_settings const *)buf);
 242                 if (!retval)
 243                         memcpy(profile_settings, buf,
 244                                         sizeof(struct kovaplus_profile_settings));
 245         }
 246         mutex_unlock(&kovaplus->kovaplus_lock);
 247
 248         if (retval)
 249                 return retval;
 250
 251         return sizeof(struct kovaplus_profile_settings);
 252 }
 253
 254 static ssize_t kovaplus_sysfs_read_profilex_buttons(struct file *fp,
 255                 struct kobject *kobj, struct bin_attribute *attr, char *buf,
 256                 loff_t off, size_t count)
 257 {
 258         struct device *dev =
 259                         container_of(kobj, struct device, kobj)->parent->parent;
 260         struct kovaplus_device *kovaplus = hid_get_drvdata(dev_get_drvdata(dev));
 261
 262         if (off >= sizeof(struct kovaplus_profile_buttons))
 263                 return 0;
 264
 265         if (off + count > sizeof(struct kovaplus_profile_buttons))
 266                 count = sizeof(struct kovaplus_profile_buttons) - off;
 267
 268         mutex_lock(&kovaplus->kovaplus_lock);
 269         memcpy(buf, ((char const *)&kovaplus->profile_buttons[*(uint *)(attr->private)]) + off,
 270                         count);
 271         mutex_unlock(&kovaplus->kovaplus_lock);
 272
 273         return count;
 274 }
 275
 276 static ssize_t kovaplus_sysfs_write_profile_buttons(struct file *fp,
 277                 struct kobject *kobj, struct bin_attribute *attr, char *buf,
 278                 loff_t off, size_t count)
 279 {
 280         struct device *dev =
 281                         container_of(kobj, struct device, kobj)->parent->parent;
 282         struct kovaplus_device *kovaplus = hid_get_drvdata(dev_get_drvdata(dev));
 283         struct usb_device *usb_dev = interface_to_usbdev(to_usb_interface(dev));
 284         int retval = 0;
 285         int difference;
 286         uint profile_index;
 287         struct kovaplus_profile_buttons *profile_buttons;
 288
 289         if (off != 0 || count != sizeof(struct kovaplus_profile_buttons))
 290                 return -EINVAL;
 291
 292         profile_index = ((struct kovaplus_profile_buttons const *)buf)->profile_index;
 293         profile_buttons = &kovaplus->profile_buttons[profile_index];
 294
 295         mutex_lock(&kovaplus->kovaplus_lock);
 296         difference = memcmp(buf, profile_buttons,
 297                         sizeof(struct kovaplus_profile_buttons));
 298         if (difference) {
 299                 retval = kovaplus_set_profile_buttons(usb_dev,
 300                                 (struct kovaplus_profile_buttons const *)buf);
 301                 if (!retval)
 302                         memcpy(profile_buttons, buf,
 303                                         sizeof(struct kovaplus_profile_buttons));
 304         }
 305         mutex_unlock(&kovaplus->kovaplus_lock);
 306
 307         if (retval)
 308                 return retval;
 309
 310         return sizeof(struct kovaplus_profile_buttons);
 311 }
 312
 313 static ssize_t kovaplus_sysfs_show_actual_profile(struct device *dev,
 314                 struct device_attribute *attr, char *buf)
 315 {
 316         struct kovaplus_device *kovaplus =
 317                         hid_get_drvdata(dev_get_drvdata(dev->parent->parent));
 318         return snprintf(buf, PAGE_SIZE, "%d\n", kovaplus->actual_profile);
 319 }
 320
 321 static ssize_t kovaplus_sysfs_set_actual_profile(struct device *dev,
 322                 struct device_attribute *attr, char const *buf, size_t size)
 323 {
 324         struct kovaplus_device *kovaplus;
 325         struct usb_device *usb_dev;
 326         unsigned long profile;
 327         int retval;
 328         struct kovaplus_roccat_report roccat_report;
 329
 330         dev = dev->parent->parent;
 331         kovaplus = hid_get_drvdata(dev_get_drvdata(dev));
 332         usb_dev = interface_to_usbdev(to_usb_interface(dev));
 333
 334         retval = strict_strtoul(buf, 10, &profile);
 335         if (retval)
 336                 return retval;
 337
 338         if (profile >= 5)
 339                 return -EINVAL;
 340
 341         mutex_lock(&kovaplus->kovaplus_lock);
 342         retval = kovaplus_set_actual_profile(usb_dev, profile);
 343         if (retval) {
 344                 mutex_unlock(&kovaplus->kovaplus_lock);
 345                 return retval;
 346         }
 347
 348         kovaplus_profile_activated(kovaplus, profile);
 349
 350         roccat_report.type = KOVAPLUS_MOUSE_REPORT_BUTTON_TYPE_PROFILE_1;
 351         roccat_report.profile = profile + 1;
 352         roccat_report.button = 0;
 353         roccat_report.data1 = profile + 1;
 354         roccat_report.data2 = 0;
 355         roccat_report_event(kovaplus->chrdev_minor,
 356                         (uint8_t const *)&roccat_report);
 357
 358         mutex_unlock(&kovaplus->kovaplus_lock);
 359
 360         return size;
 361 }
 362
 363 static ssize_t kovaplus_sysfs_show_actual_cpi(struct device *dev,
 364                 struct device_attribute *attr, char *buf)
 365 {
 366         struct kovaplus_device *kovaplus =
 367                         hid_get_drvdata(dev_get_drvdata(dev->parent->parent));
 368         return snprintf(buf, PAGE_SIZE, "%d\n", kovaplus->actual_cpi);
 369 }
 370
 371 static ssize_t kovaplus_sysfs_show_actual_sensitivity_x(struct device *dev,
 372                 struct device_attribute *attr, char *buf)
 373 {
 374         struct kovaplus_device *kovaplus =
 375                         hid_get_drvdata(dev_get_drvdata(dev->parent->parent));
 376         return snprintf(buf, PAGE_SIZE, "%d\n", kovaplus->actual_x_sensitivity);
 377 }
 378
 379 static ssize_t kovaplus_sysfs_show_actual_sensitivity_y(struct device *dev,
 380                 struct device_attribute *attr, char *buf)
 381 {
 382         struct kovaplus_device *kovaplus =
 383                         hid_get_drvdata(dev_get_drvdata(dev->parent->parent));
 384         return snprintf(buf, PAGE_SIZE, "%d\n", kovaplus->actual_y_sensitivity);
 385 }
 386
 387 static ssize_t kovaplus_sysfs_show_firmware_version(struct device *dev,
 388                 struct device_attribute *attr, char *buf)
 389 {
 390         struct kovaplus_device *kovaplus =
 391                         hid_get_drvdata(dev_get_drvdata(dev->parent->parent));
 392         return snprintf(buf, PAGE_SIZE, "%d\n", kovaplus->info.firmware_version);
 393 }
 394
 395 static struct device_attribute kovaplus_attributes[] = {
 396         __ATTR(actual_cpi, 0440,
 397                 kovaplus_sysfs_show_actual_cpi, NULL),
 398         __ATTR(firmware_version, 0440,
 399                 kovaplus_sysfs_show_firmware_version, NULL),
 400         __ATTR(actual_profile, 0660,
 401                 kovaplus_sysfs_show_actual_profile,
 402                 kovaplus_sysfs_set_actual_profile),
 403         __ATTR(actual_sensitivity_x, 0440,
 404                 kovaplus_sysfs_show_actual_sensitivity_x, NULL),
 405         __ATTR(actual_sensitivity_y, 0440,
 406                 kovaplus_sysfs_show_actual_sensitivity_y, NULL),
 407         __ATTR_NULL
 408 };
 409
 410 static struct bin_attribute kovaplus_bin_attributes[] = {
 411         {
 412                 .attr = { .name = "profile_settings", .mode = 0220 },
 413                 .size = sizeof(struct kovaplus_profile_settings),
 414                 .write = kovaplus_sysfs_write_profile_settings
 415         },
 416         {
 417                 .attr = { .name = "profile1_settings", .mode = 0440 },
 418                 .size = sizeof(struct kovaplus_profile_settings),
 419                 .read = kovaplus_sysfs_read_profilex_settings,
 420                 .private = &profile_numbers[0]
 421         },
 422         {
 423                 .attr = { .name = "profile2_settings", .mode = 0440 },
 424                 .size = sizeof(struct kovaplus_profile_settings),
 425                 .read = kovaplus_sysfs_read_profilex_settings,
 426                 .private = &profile_numbers[1]
 427         },
 428         {
 429                 .attr = { .name = "profile3_settings", .mode = 0440 },
 430                 .size = sizeof(struct kovaplus_profile_settings),
 431                 .read = kovaplus_sysfs_read_profilex_settings,
 432                 .private = &profile_numbers[2]
 433         },
 434         {
 435                 .attr = { .name = "profile4_settings", .mode = 0440 },
 436                 .size = sizeof(struct kovaplus_profile_settings),
 437                 .read = kovaplus_sysfs_read_profilex_settings,
 438                 .private = &profile_numbers[3]
 439         },
 440         {
 441                 .attr = { .name = "profile5_settings", .mode = 0440 },
 442                 .size = sizeof(struct kovaplus_profile_settings),
 443                 .read = kovaplus_sysfs_read_profilex_settings,
 444                 .private = &profile_numbers[4]
 445         },
 446         {
 447                 .attr = { .name = "profile_buttons", .mode = 0220 },
 448                 .size = sizeof(struct kovaplus_profile_buttons),
 449                 .write = kovaplus_sysfs_write_profile_buttons
 450         },
 451         {
 452                 .attr = { .name = "profile1_buttons", .mode = 0440 },
 453                 .size = sizeof(struct kovaplus_profile_buttons),
 454                 .read = kovaplus_sysfs_read_profilex_buttons,
 455                 .private = &profile_numbers[0]
 456         },
 457         {
 458                 .attr = { .name = "profile2_buttons", .mode = 0440 },
 459                 .size = sizeof(struct kovaplus_profile_buttons),
 460                 .read = kovaplus_sysfs_read_profilex_buttons,
 461                 .private = &profile_numbers[1]
 462         },
 463         {
 464                 .attr = { .name = "profile3_buttons", .mode = 0440 },
 465                 .size = sizeof(struct kovaplus_profile_buttons),
 466                 .read = kovaplus_sysfs_read_profilex_buttons,
 467                 .private = &profile_numbers[2]
 468         },
 469         {
 470                 .attr = { .name = "profile4_buttons", .mode = 0440 },
 471                 .size = sizeof(struct kovaplus_profile_buttons),
 472                 .read = kovaplus_sysfs_read_profilex_buttons,
 473                 .private = &profile_numbers[3]
 474         },
 475         {
 476                 .attr = { .name = "profile5_buttons", .mode = 0440 },
 477                 .size = sizeof(struct kovaplus_profile_buttons),
 478                 .read = kovaplus_sysfs_read_profilex_buttons,
 479                 .private = &profile_numbers[4]
 480         },
 481         __ATTR_NULL
 482 };
 483
 484 static int kovaplus_init_kovaplus_device_struct(struct usb_device *usb_dev,
 485                 struct kovaplus_device *kovaplus)
 486 {
 487         int retval, i;
 488         static uint wait = 70; /* device will freeze with just 60 */
 489
 490         mutex_init(&kovaplus->kovaplus_lock);
 491
 492         retval = kovaplus_get_info(usb_dev, &kovaplus->info);
 493         if (retval)
 494                 return retval;
 495
 496         for (i = 0; i < 5; ++i) {
 497                 msleep(wait);
 498                 retval = kovaplus_get_profile_settings(usb_dev,
 499                                 &kovaplus->profile_settings[i], i);
 500                 if (retval)
 501                         return retval;
 502
 503                 msleep(wait);
 504                 retval = kovaplus_get_profile_buttons(usb_dev,
 505                                 &kovaplus->profile_buttons[i], i);
 506                 if (retval)
 507                         return retval;
 508         }
 509
 510         msleep(wait);
 511         retval = kovaplus_get_actual_profile(usb_dev);
 512         if (retval < 0)
 513                 return retval;
 514         kovaplus_profile_activated(kovaplus, retval);
 515
 516         return 0;
 517 }
 518
 519 static int kovaplus_init_specials(struct hid_device *hdev)
 520 {
 521         struct usb_interface *intf = to_usb_interface(hdev->dev.parent);
 522         struct usb_device *usb_dev = interface_to_usbdev(intf);
 523         struct kovaplus_device *kovaplus;
 524         int retval;
 525
 526         if (intf->cur_altsetting->desc.bInterfaceProtocol
 527                         == USB_INTERFACE_PROTOCOL_MOUSE) {
 528
 529                 kovaplus = kzalloc(sizeof(*kovaplus), GFP_KERNEL);
 530                 if (!kovaplus) {
 531                         hid_err(hdev, "can't alloc device descriptor\n");
 532                         return -ENOMEM;
 533                 }
 534                 hid_set_drvdata(hdev, kovaplus);
 535
 536                 retval = kovaplus_init_kovaplus_device_struct(usb_dev, kovaplus);
 537                 if (retval) {
 538                         hid_err(hdev, "couldn't init struct kovaplus_device\n");
 539                         goto exit_free;
 540                 }
 541
 542                 retval = roccat_connect(kovaplus_class, hdev,
 543                                 sizeof(struct kovaplus_roccat_report));
 544                 if (retval < 0) {
 545                         hid_err(hdev, "couldn't init char dev\n");
 546                 } else {
 547                         kovaplus->chrdev_minor = retval;
 548                         kovaplus->roccat_claimed = 1;
 549                 }
 550
 551         } else {
 552                 hid_set_drvdata(hdev, NULL);
 553         }
 554
 555         return 0;
 556 exit_free:
 557         kfree(kovaplus);
 558         return retval;
 559 }
 560
 561 static void kovaplus_remove_specials(struct hid_device *hdev)
 562 {
 563         struct usb_interface *intf = to_usb_interface(hdev->dev.parent);
 564         struct kovaplus_device *kovaplus;
 565
 566         if (intf->cur_altsetting->desc.bInterfaceProtocol
 567                         == USB_INTERFACE_PROTOCOL_MOUSE) {
 568                 kovaplus = hid_get_drvdata(hdev);
 569                 if (kovaplus->roccat_claimed)
 570                         roccat_disconnect(kovaplus->chrdev_minor);
 571                 kfree(kovaplus);
 572         }
 573 }
 574
 575 static int kovaplus_probe(struct hid_device *hdev,
 576                 const struct hid_device_id *id)
 577 {
 578         int retval;
 579
 580         retval = hid_parse(hdev);
 581         if (retval) {
 582                 hid_err(hdev, "parse failed\n");
 583                 goto exit;
 584         }
 585
 586         retval = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
 587         if (retval) {
 588                 hid_err(hdev, "hw start failed\n");
 589                 goto exit;
 590         }
 591
 592         retval = kovaplus_init_specials(hdev);
 593         if (retval) {
 594                 hid_err(hdev, "couldn't install mouse\n");
 595                 goto exit_stop;
 596         }
 597
 598         return 0;
 599
 600 exit_stop:
 601         hid_hw_stop(hdev);
 602 exit:
 603         return retval;
 604 }
 605
 606 static void kovaplus_remove(struct hid_device *hdev)
 607 {
 608         kovaplus_remove_specials(hdev);
 609         hid_hw_stop(hdev);
 610 }
 611
 612 static void kovaplus_keep_values_up_to_date(struct kovaplus_device *kovaplus,
 613                 u8 const *data)
 614 {
 615         struct kovaplus_mouse_report_button const *button_report;
 616
 617         if (data[0] != KOVAPLUS_MOUSE_REPORT_NUMBER_BUTTON)
 618                 return;
 619
 620         button_report = (struct kovaplus_mouse_report_button const *)data;
 621
 622         switch (button_report->type) {
 623         case KOVAPLUS_MOUSE_REPORT_BUTTON_TYPE_PROFILE_1:
 624                 kovaplus_profile_activated(kovaplus, button_report->data1 - 1);
 625                 break;
 626         case KOVAPLUS_MOUSE_REPORT_BUTTON_TYPE_CPI:
 627                 kovaplus->actual_cpi = kovaplus_convert_event_cpi(button_report->data1);
 628         case KOVAPLUS_MOUSE_REPORT_BUTTON_TYPE_SENSITIVITY:
 629                 kovaplus->actual_x_sensitivity = button_report->data1;
 630                 kovaplus->actual_y_sensitivity = button_report->data2;
 631         }
 632 }
 633
 634 static void kovaplus_report_to_chrdev(struct kovaplus_device const *kovaplus,
 635                 u8 const *data)
 636 {
 637         struct kovaplus_roccat_report roccat_report;
 638         struct kovaplus_mouse_report_button const *button_report;
 639
 640         if (data[0] != KOVAPLUS_MOUSE_REPORT_NUMBER_BUTTON)
 641                 return;
 642
 643         button_report = (struct kovaplus_mouse_report_button const *)data;
 644
 645         if (button_report->type == KOVAPLUS_MOUSE_REPORT_BUTTON_TYPE_PROFILE_2)
 646                 return;
 647
 648         roccat_report.type = button_report->type;
 649         roccat_report.profile = kovaplus->actual_profile + 1;
 650
 651         if (roccat_report.type == KOVAPLUS_MOUSE_REPORT_BUTTON_TYPE_MACRO ||
 652                         roccat_report.type == KOVAPLUS_MOUSE_REPORT_BUTTON_TYPE_SHORTCUT ||
 653                         roccat_report.type == KOVAPLUS_MOUSE_REPORT_BUTTON_TYPE_QUICKLAUNCH ||
 654                         roccat_report.type == KOVAPLUS_MOUSE_REPORT_BUTTON_TYPE_TIMER)
 655                 roccat_report.button = button_report->data1;
 656         else
 657                 roccat_report.button = 0;
 658
 659         if (roccat_report.type == KOVAPLUS_MOUSE_REPORT_BUTTON_TYPE_CPI)
 660                 roccat_report.data1 = kovaplus_convert_event_cpi(button_report->data1);
 661         else
 662                 roccat_report.data1 = button_report->data1;
 663
 664         roccat_report.data2 = button_report->data2;
 665
 666         roccat_report_event(kovaplus->chrdev_minor,
 667                         (uint8_t const *)&roccat_report);
 668 }
 669
 670 static int kovaplus_raw_event(struct hid_device *hdev,
 671                 struct hid_report *report, u8 *data, int size)
 672 {
 673         struct usb_interface *intf = to_usb_interface(hdev->dev.parent);
 674         struct kovaplus_device *kovaplus = hid_get_drvdata(hdev);
 675
 676         if (intf->cur_altsetting->desc.bInterfaceProtocol
 677                         != USB_INTERFACE_PROTOCOL_MOUSE)
 678                 return 0;
 679
 680         if (kovaplus == NULL)
 681                 return 0;
 682
 683         kovaplus_keep_values_up_to_date(kovaplus, data);
 684
 685         if (kovaplus->roccat_claimed)
 686                 kovaplus_report_to_chrdev(kovaplus, data);
 687
 688         return 0;
 689 }
 690
 691 static const struct hid_device_id kovaplus_devices[] = {
 692         { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_KOVAPLUS) },
 693         { }
 694 };
 695
 696 MODULE_DEVICE_TABLE(hid, kovaplus_devices);
 697
 698 static struct hid_driver kovaplus_driver = {
 699                 .name = "kovaplus",
 700                 .id_table = kovaplus_devices,
 701                 .probe = kovaplus_probe,
 702                 .remove = kovaplus_remove,
 703                 .raw_event = kovaplus_raw_event
 704 };
 705
 706 static int __init kovaplus_init(void)
 707 {
 708         int retval;
 709
 710         kovaplus_class = class_create(THIS_MODULE, "kovaplus");
 711         if (IS_ERR(kovaplus_class))
 712                 return PTR_ERR(kovaplus_class);
 713         kovaplus_class->dev_attrs = kovaplus_attributes;
 714         kovaplus_class->dev_bin_attrs = kovaplus_bin_attributes;
 715
 716         retval = hid_register_driver(&kovaplus_driver);
 717         if (retval)
 718                 class_destroy(kovaplus_class);
 719         return retval;
 720 }
 721
 722 static void __exit kovaplus_exit(void)
 723 {
 724         hid_unregister_driver(&kovaplus_driver);
 725         class_destroy(kovaplus_class);
 726 }
 727
 728 module_init(kovaplus_init);
 729 module_exit(kovaplus_exit);
 730
 731 MODULE_AUTHOR("Stefan Achatz");
 732 MODULE_DESCRIPTION("USB Roccat Kova[+] driver");
 733 MODULE_LICENSE("GPL v2");