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_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_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, "roccat_common_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_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_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_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_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_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_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_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         struct kovaplus_roccat_report roccat_report;
 327
 328         dev = dev->parent->parent;
 329         kovaplus = hid_get_drvdata(dev_get_drvdata(dev));
 330         usb_dev = interface_to_usbdev(to_usb_interface(dev));
 331
 332         retval = strict_strtoul(buf, 10, &profile);
 333         if (retval)
 334                 return retval;
 335
 336         if (profile >= 5)
 337                 return -EINVAL;
 338
 339         mutex_lock(&kovaplus->kovaplus_lock);
 340         retval = kovaplus_set_actual_profile(usb_dev, profile);
 341         if (retval) {
 342                 mutex_unlock(&kovaplus->kovaplus_lock);
 343                 return retval;
 344         }
 345
 346         kovaplus_profile_activated(kovaplus, profile);
 347
 348         roccat_report.type = KOVAPLUS_MOUSE_REPORT_BUTTON_TYPE_PROFILE_1;
 349         roccat_report.profile = profile + 1;
 350         roccat_report.button = 0;
 351         roccat_report.data1 = profile + 1;
 352         roccat_report.data2 = 0;
 353         roccat_report_event(kovaplus->chrdev_minor,
 354                         (uint8_t const *)&roccat_report);
 355
 356         mutex_unlock(&kovaplus->kovaplus_lock);
 357
 358         return size;
 359 }
 360
 361 static ssize_t kovaplus_sysfs_show_actual_cpi(struct device *dev,
 362                 struct device_attribute *attr, char *buf)
 363 {
 364         struct kovaplus_device *kovaplus =
 365                         hid_get_drvdata(dev_get_drvdata(dev->parent->parent));
 366         return snprintf(buf, PAGE_SIZE, "%d\n", kovaplus->actual_cpi);
 367 }
 368
 369 static ssize_t kovaplus_sysfs_show_actual_sensitivity_x(struct device *dev,
 370                 struct device_attribute *attr, char *buf)
 371 {
 372         struct kovaplus_device *kovaplus =
 373                         hid_get_drvdata(dev_get_drvdata(dev->parent->parent));
 374         return snprintf(buf, PAGE_SIZE, "%d\n", kovaplus->actual_x_sensitivity);
 375 }
 376
 377 static ssize_t kovaplus_sysfs_show_actual_sensitivity_y(struct device *dev,
 378                 struct device_attribute *attr, char *buf)
 379 {
 380         struct kovaplus_device *kovaplus =
 381                         hid_get_drvdata(dev_get_drvdata(dev->parent->parent));
 382         return snprintf(buf, PAGE_SIZE, "%d\n", kovaplus->actual_y_sensitivity);
 383 }
 384
 385 static ssize_t kovaplus_sysfs_show_firmware_version(struct device *dev,
 386                 struct device_attribute *attr, char *buf)
 387 {
 388         struct kovaplus_device *kovaplus =
 389                         hid_get_drvdata(dev_get_drvdata(dev->parent->parent));
 390         return snprintf(buf, PAGE_SIZE, "%d\n", kovaplus->info.firmware_version);
 391 }
 392
 393 static struct device_attribute kovaplus_attributes[] = {
 394         __ATTR(actual_cpi, 0440,
 395                 kovaplus_sysfs_show_actual_cpi, NULL),
 396         __ATTR(firmware_version, 0440,
 397                 kovaplus_sysfs_show_firmware_version, NULL),
 398         __ATTR(actual_profile, 0660,
 399                 kovaplus_sysfs_show_actual_profile,
 400                 kovaplus_sysfs_set_actual_profile),
 401         __ATTR(actual_sensitivity_x, 0440,
 402                 kovaplus_sysfs_show_actual_sensitivity_x, NULL),
 403         __ATTR(actual_sensitivity_y, 0440,
 404                 kovaplus_sysfs_show_actual_sensitivity_y, NULL),
 405         __ATTR_NULL
 406 };
 407
 408 static struct bin_attribute kovaplus_bin_attributes[] = {
 409         {
 410                 .attr = { .name = "profile_settings", .mode = 0220 },
 411                 .size = sizeof(struct kovaplus_profile_settings),
 412                 .write = kovaplus_sysfs_write_profile_settings
 413         },
 414         {
 415                 .attr = { .name = "profile1_settings", .mode = 0440 },
 416                 .size = sizeof(struct kovaplus_profile_settings),
 417                 .read = kovaplus_sysfs_read_profilex_settings,
 418                 .private = &profile_numbers[0]
 419         },
 420         {
 421                 .attr = { .name = "profile2_settings", .mode = 0440 },
 422                 .size = sizeof(struct kovaplus_profile_settings),
 423                 .read = kovaplus_sysfs_read_profilex_settings,
 424                 .private = &profile_numbers[1]
 425         },
 426         {
 427                 .attr = { .name = "profile3_settings", .mode = 0440 },
 428                 .size = sizeof(struct kovaplus_profile_settings),
 429                 .read = kovaplus_sysfs_read_profilex_settings,
 430                 .private = &profile_numbers[2]
 431         },
 432         {
 433                 .attr = { .name = "profile4_settings", .mode = 0440 },
 434                 .size = sizeof(struct kovaplus_profile_settings),
 435                 .read = kovaplus_sysfs_read_profilex_settings,
 436                 .private = &profile_numbers[3]
 437         },
 438         {
 439                 .attr = { .name = "profile5_settings", .mode = 0440 },
 440                 .size = sizeof(struct kovaplus_profile_settings),
 441                 .read = kovaplus_sysfs_read_profilex_settings,
 442                 .private = &profile_numbers[4]
 443         },
 444         {
 445                 .attr = { .name = "profile_buttons", .mode = 0220 },
 446                 .size = sizeof(struct kovaplus_profile_buttons),
 447                 .write = kovaplus_sysfs_write_profile_buttons
 448         },
 449         {
 450                 .attr = { .name = "profile1_buttons", .mode = 0440 },
 451                 .size = sizeof(struct kovaplus_profile_buttons),
 452                 .read = kovaplus_sysfs_read_profilex_buttons,
 453                 .private = &profile_numbers[0]
 454         },
 455         {
 456                 .attr = { .name = "profile2_buttons", .mode = 0440 },
 457                 .size = sizeof(struct kovaplus_profile_buttons),
 458                 .read = kovaplus_sysfs_read_profilex_buttons,
 459                 .private = &profile_numbers[1]
 460         },
 461         {
 462                 .attr = { .name = "profile3_buttons", .mode = 0440 },
 463                 .size = sizeof(struct kovaplus_profile_buttons),
 464                 .read = kovaplus_sysfs_read_profilex_buttons,
 465                 .private = &profile_numbers[2]
 466         },
 467         {
 468                 .attr = { .name = "profile4_buttons", .mode = 0440 },
 469                 .size = sizeof(struct kovaplus_profile_buttons),
 470                 .read = kovaplus_sysfs_read_profilex_buttons,
 471                 .private = &profile_numbers[3]
 472         },
 473         {
 474                 .attr = { .name = "profile5_buttons", .mode = 0440 },
 475                 .size = sizeof(struct kovaplus_profile_buttons),
 476                 .read = kovaplus_sysfs_read_profilex_buttons,
 477                 .private = &profile_numbers[4]
 478         },
 479         __ATTR_NULL
 480 };
 481
 482 static int kovaplus_init_kovaplus_device_struct(struct usb_device *usb_dev,
 483                 struct kovaplus_device *kovaplus)
 484 {
 485         int retval, i;
 486         static uint wait = 70; /* device will freeze with just 60 */
 487
 488         mutex_init(&kovaplus->kovaplus_lock);
 489
 490         retval = kovaplus_get_info(usb_dev, &kovaplus->info);
 491         if (retval)
 492                 return retval;
 493
 494         for (i = 0; i < 5; ++i) {
 495                 msleep(wait);
 496                 retval = kovaplus_get_profile_settings(usb_dev,
 497                                 &kovaplus->profile_settings[i], i);
 498                 if (retval)
 499                         return retval;
 500
 501                 msleep(wait);
 502                 retval = kovaplus_get_profile_buttons(usb_dev,
 503                                 &kovaplus->profile_buttons[i], i);
 504                 if (retval)
 505                         return retval;
 506         }
 507
 508         msleep(wait);
 509         retval = kovaplus_get_actual_profile(usb_dev);
 510         if (retval < 0)
 511                 return retval;
 512         kovaplus_profile_activated(kovaplus, retval);
 513
 514         return 0;
 515 }
 516
 517 static int kovaplus_init_specials(struct hid_device *hdev)
 518 {
 519         struct usb_interface *intf = to_usb_interface(hdev->dev.parent);
 520         struct usb_device *usb_dev = interface_to_usbdev(intf);
 521         struct kovaplus_device *kovaplus;
 522         int retval;
 523
 524         if (intf->cur_altsetting->desc.bInterfaceProtocol
 525                         == USB_INTERFACE_PROTOCOL_MOUSE) {
 526
 527                 kovaplus = kzalloc(sizeof(*kovaplus), GFP_KERNEL);
 528                 if (!kovaplus) {
 529                         hid_err(hdev, "can't alloc device descriptor\n");
 530                         return -ENOMEM;
 531                 }
 532                 hid_set_drvdata(hdev, kovaplus);
 533
 534                 retval = kovaplus_init_kovaplus_device_struct(usb_dev, kovaplus);
 535                 if (retval) {
 536                         hid_err(hdev, "couldn't init struct kovaplus_device\n");
 537                         goto exit_free;
 538                 }
 539
 540                 retval = roccat_connect(kovaplus_class, hdev,
 541                                 sizeof(struct kovaplus_roccat_report));
 542                 if (retval < 0) {
 543                         hid_err(hdev, "couldn't init char dev\n");
 544                 } else {
 545                         kovaplus->chrdev_minor = retval;
 546                         kovaplus->roccat_claimed = 1;
 547                 }
 548
 549         } else {
 550                 hid_set_drvdata(hdev, NULL);
 551         }
 552
 553         return 0;
 554 exit_free:
 555         kfree(kovaplus);
 556         return retval;
 557 }
 558
 559 static void kovaplus_remove_specials(struct hid_device *hdev)
 560 {
 561         struct usb_interface *intf = to_usb_interface(hdev->dev.parent);
 562         struct kovaplus_device *kovaplus;
 563
 564         if (intf->cur_altsetting->desc.bInterfaceProtocol
 565                         == USB_INTERFACE_PROTOCOL_MOUSE) {
 566                 kovaplus = hid_get_drvdata(hdev);
 567                 if (kovaplus->roccat_claimed)
 568                         roccat_disconnect(kovaplus->chrdev_minor);
 569                 kfree(kovaplus);
 570         }
 571 }
 572
 573 static int kovaplus_probe(struct hid_device *hdev,
 574                 const struct hid_device_id *id)
 575 {
 576         int retval;
 577
 578         retval = hid_parse(hdev);
 579         if (retval) {
 580                 hid_err(hdev, "parse failed\n");
 581                 goto exit;
 582         }
 583
 584         retval = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
 585         if (retval) {
 586                 hid_err(hdev, "hw start failed\n");
 587                 goto exit;
 588         }
 589
 590         retval = kovaplus_init_specials(hdev);
 591         if (retval) {
 592                 hid_err(hdev, "couldn't install mouse\n");
 593                 goto exit_stop;
 594         }
 595
 596         return 0;
 597
 598 exit_stop:
 599         hid_hw_stop(hdev);
 600 exit:
 601         return retval;
 602 }
 603
 604 static void kovaplus_remove(struct hid_device *hdev)
 605 {
 606         kovaplus_remove_specials(hdev);
 607         hid_hw_stop(hdev);
 608 }
 609
 610 static void kovaplus_keep_values_up_to_date(struct kovaplus_device *kovaplus,
 611                 u8 const *data)
 612 {
 613         struct kovaplus_mouse_report_button const *button_report;
 614
 615         if (data[0] != KOVAPLUS_MOUSE_REPORT_NUMBER_BUTTON)
 616                 return;
 617
 618         button_report = (struct kovaplus_mouse_report_button const *)data;
 619
 620         switch (button_report->type) {
 621         case KOVAPLUS_MOUSE_REPORT_BUTTON_TYPE_PROFILE_1:
 622                 kovaplus_profile_activated(kovaplus, button_report->data1 - 1);
 623                 break;
 624         case KOVAPLUS_MOUSE_REPORT_BUTTON_TYPE_CPI:
 625                 kovaplus->actual_cpi = kovaplus_convert_event_cpi(button_report->data1);
 626                 break;
 627         case KOVAPLUS_MOUSE_REPORT_BUTTON_TYPE_SENSITIVITY:
 628                 kovaplus->actual_x_sensitivity = button_report->data1;
 629                 kovaplus->actual_y_sensitivity = button_report->data2;
 630                 break;
 631         default:
 632                 break;
 633         }
 634 }
 635
 636 static void kovaplus_report_to_chrdev(struct kovaplus_device const *kovaplus,
 637                 u8 const *data)
 638 {
 639         struct kovaplus_roccat_report roccat_report;
 640         struct kovaplus_mouse_report_button const *button_report;
 641
 642         if (data[0] != KOVAPLUS_MOUSE_REPORT_NUMBER_BUTTON)
 643                 return;
 644
 645         button_report = (struct kovaplus_mouse_report_button const *)data;
 646
 647         if (button_report->type == KOVAPLUS_MOUSE_REPORT_BUTTON_TYPE_PROFILE_2)
 648                 return;
 649
 650         roccat_report.type = button_report->type;
 651         roccat_report.profile = kovaplus->actual_profile + 1;
 652
 653         if (roccat_report.type == KOVAPLUS_MOUSE_REPORT_BUTTON_TYPE_MACRO ||
 654                         roccat_report.type == KOVAPLUS_MOUSE_REPORT_BUTTON_TYPE_SHORTCUT ||
 655                         roccat_report.type == KOVAPLUS_MOUSE_REPORT_BUTTON_TYPE_QUICKLAUNCH ||
 656                         roccat_report.type == KOVAPLUS_MOUSE_REPORT_BUTTON_TYPE_TIMER)
 657                 roccat_report.button = button_report->data1;
 658         else
 659                 roccat_report.button = 0;
 660
 661         if (roccat_report.type == KOVAPLUS_MOUSE_REPORT_BUTTON_TYPE_CPI)
 662                 roccat_report.data1 = kovaplus_convert_event_cpi(button_report->data1);
 663         else
 664                 roccat_report.data1 = button_report->data1;
 665
 666         roccat_report.data2 = button_report->data2;
 667
 668         roccat_report_event(kovaplus->chrdev_minor,
 669                         (uint8_t const *)&roccat_report);
 670 }
 671
 672 static int kovaplus_raw_event(struct hid_device *hdev,
 673                 struct hid_report *report, u8 *data, int size)
 674 {
 675         struct usb_interface *intf = to_usb_interface(hdev->dev.parent);
 676         struct kovaplus_device *kovaplus = hid_get_drvdata(hdev);
 677
 678         if (intf->cur_altsetting->desc.bInterfaceProtocol
 679                         != USB_INTERFACE_PROTOCOL_MOUSE)
 680                 return 0;
 681
 682         if (kovaplus == NULL)
 683                 return 0;
 684
 685         kovaplus_keep_values_up_to_date(kovaplus, data);
 686
 687         if (kovaplus->roccat_claimed)
 688                 kovaplus_report_to_chrdev(kovaplus, data);
 689
 690         return 0;
 691 }
 692
 693 static const struct hid_device_id kovaplus_devices[] = {
 694         { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_KOVAPLUS) },
 695         { }
 696 };
 697
 698 MODULE_DEVICE_TABLE(hid, kovaplus_devices);
 699
 700 static struct hid_driver kovaplus_driver = {
 701                 .name = "kovaplus",
 702                 .id_table = kovaplus_devices,
 703                 .probe = kovaplus_probe,
 704                 .remove = kovaplus_remove,
 705                 .raw_event = kovaplus_raw_event
 706 };
 707
 708 static int __init kovaplus_init(void)
 709 {
 710         int retval;
 711
 712         kovaplus_class = class_create(THIS_MODULE, "kovaplus");
 713         if (IS_ERR(kovaplus_class))
 714                 return PTR_ERR(kovaplus_class);
 715         kovaplus_class->dev_attrs = kovaplus_attributes;
 716         kovaplus_class->dev_bin_attrs = kovaplus_bin_attributes;
 717
 718         retval = hid_register_driver(&kovaplus_driver);
 719         if (retval)
 720                 class_destroy(kovaplus_class);
 721         return retval;
 722 }
 723
 724 static void __exit kovaplus_exit(void)
 725 {
 726         hid_unregister_driver(&kovaplus_driver);
 727         class_destroy(kovaplus_class);
 728 }
 729
 730 module_init(kovaplus_init);
 731 module_exit(kovaplus_exit);
 732
 733 MODULE_AUTHOR("Stefan Achatz");
 734 MODULE_DESCRIPTION("USB Roccat Kova[+] driver");
 735 MODULE_LICENSE("GPL v2");