drivers/hid/hid-roccat-koneplus.c

   1 /*
   2  * Roccat Kone[+] driver for Linux
   3  *
   4  * Copyright (c) 2010 Stefan Achatz <erazor_de@users.sourceforge.net>
   5  */
   6
   7 /*
   8  * This program is free software; you can redistribute it and/or modify it
   9  * under the terms of the GNU General Public License as published by the Free
  10  * Software Foundation; either version 2 of the License, or (at your option)
  11  * any later version.
  12  */
  13
  14 /*
  15  * Roccat Kone[+] is an updated/improved version of the Kone with more memory
  16  * and functionality and without the non-standard behaviours the Kone had.
  17  */
  18
  19 #include <linux/device.h>
  20 #include <linux/input.h>
  21 #include <linux/hid.h>
  22 #include <linux/module.h>
  23 #include <linux/slab.h>
  24 #include <linux/hid-roccat.h>
  25 #include "hid-ids.h"
  26 #include "hid-roccat-common.h"
  27 #include "hid-roccat-koneplus.h"
  28
  29 static uint profile_numbers[5] = {0, 1, 2, 3, 4};
  30
  31 static struct class *koneplus_class;
  32
  33 static void koneplus_profile_activated(struct koneplus_device *koneplus,
  34                 uint new_profile)
  35 {
  36         koneplus->actual_profile = new_profile;
  37 }
  38
  39 static int koneplus_send_control(struct usb_device *usb_dev, uint value,
  40                 enum koneplus_control_requests request)
  41 {
  42         struct koneplus_control control;
  43
  44         if ((request == KONEPLUS_CONTROL_REQUEST_PROFILE_SETTINGS ||
  45                         request == KONEPLUS_CONTROL_REQUEST_PROFILE_BUTTONS) &&
  46                         value > 4)
  47                 return -EINVAL;
  48
  49         control.command = KONEPLUS_COMMAND_CONTROL;
  50         control.value = value;
  51         control.request = request;
  52
  53         return roccat_common_send(usb_dev, KONEPLUS_COMMAND_CONTROL,
  54                         &control, sizeof(struct koneplus_control));
  55 }
  56
  57 static int koneplus_receive_control_status(struct usb_device *usb_dev)
  58 {
  59         int retval;
  60         struct koneplus_control control;
  61
  62         do {
  63                 retval = roccat_common_receive(usb_dev, KONEPLUS_COMMAND_CONTROL,
  64                                 &control, sizeof(struct koneplus_control));
  65
  66                 /* check if we get a completely wrong answer */
  67                 if (retval)
  68                         return retval;
  69
  70                 if (control.value == KONEPLUS_CONTROL_REQUEST_STATUS_OK)
  71                         return 0;
  72
  73                 /* indicates that hardware needs some more time to complete action */
  74                 if (control.value == KONEPLUS_CONTROL_REQUEST_STATUS_WAIT) {
  75                         msleep(500); /* windows driver uses 1000 */
  76                         continue;
  77                 }
  78
  79                 /* seems to be critical - replug necessary */
  80                 if (control.value == KONEPLUS_CONTROL_REQUEST_STATUS_OVERLOAD)
  81                         return -EINVAL;
  82
  83                 hid_err(usb_dev, "koneplus_receive_control_status: "
  84                                 "unknown response value 0x%x\n", control.value);
  85                 return -EINVAL;
  86         } while (1);
  87 }
  88
  89 static int koneplus_send(struct usb_device *usb_dev, uint command,
  90                 void const *buf, uint size)
  91 {
  92         int retval;
  93
  94         retval = roccat_common_send(usb_dev, command, buf, size);
  95         if (retval)
  96                 return retval;
  97
  98         return koneplus_receive_control_status(usb_dev);
  99 }
 100
 101 static int koneplus_select_profile(struct usb_device *usb_dev, uint number,
 102                 enum koneplus_control_requests request)
 103 {
 104         int retval;
 105
 106         retval = koneplus_send_control(usb_dev, number, request);
 107         if (retval)
 108                 return retval;
 109
 110         /* allow time to settle things - windows driver uses 500 */
 111         msleep(100);
 112
 113         retval = koneplus_receive_control_status(usb_dev);
 114         if (retval)
 115                 return retval;
 116
 117         return 0;
 118 }
 119
 120 static int koneplus_get_info(struct usb_device *usb_dev,
 121                 struct koneplus_info *buf)
 122 {
 123         return roccat_common_receive(usb_dev, KONEPLUS_COMMAND_INFO,
 124                         buf, sizeof(struct koneplus_info));
 125 }
 126
 127 static int koneplus_get_profile_settings(struct usb_device *usb_dev,
 128                 struct koneplus_profile_settings *buf, uint number)
 129 {
 130         int retval;
 131
 132         retval = koneplus_select_profile(usb_dev, number,
 133                         KONEPLUS_CONTROL_REQUEST_PROFILE_SETTINGS);
 134         if (retval)
 135                 return retval;
 136
 137         return roccat_common_receive(usb_dev, KONEPLUS_COMMAND_PROFILE_SETTINGS,
 138                         buf, sizeof(struct koneplus_profile_settings));
 139 }
 140
 141 static int koneplus_set_profile_settings(struct usb_device *usb_dev,
 142                 struct koneplus_profile_settings const *settings)
 143 {
 144         return koneplus_send(usb_dev, KONEPLUS_COMMAND_PROFILE_SETTINGS,
 145                         settings, sizeof(struct koneplus_profile_settings));
 146 }
 147
 148 static int koneplus_get_profile_buttons(struct usb_device *usb_dev,
 149                 struct koneplus_profile_buttons *buf, int number)
 150 {
 151         int retval;
 152
 153         retval = koneplus_select_profile(usb_dev, number,
 154                         KONEPLUS_CONTROL_REQUEST_PROFILE_BUTTONS);
 155         if (retval)
 156                 return retval;
 157
 158         return roccat_common_receive(usb_dev, KONEPLUS_COMMAND_PROFILE_BUTTONS,
 159                         buf, sizeof(struct koneplus_profile_buttons));
 160 }
 161
 162 static int koneplus_set_profile_buttons(struct usb_device *usb_dev,
 163                 struct koneplus_profile_buttons const *buttons)
 164 {
 165         return koneplus_send(usb_dev, KONEPLUS_COMMAND_PROFILE_BUTTONS,
 166                         buttons, sizeof(struct koneplus_profile_buttons));
 167 }
 168
 169 /* retval is 0-4 on success, < 0 on error */
 170 static int koneplus_get_actual_profile(struct usb_device *usb_dev)
 171 {
 172         struct koneplus_actual_profile buf;
 173         int retval;
 174
 175         retval = roccat_common_receive(usb_dev, KONEPLUS_COMMAND_ACTUAL_PROFILE,
 176                         &buf, sizeof(struct koneplus_actual_profile));
 177
 178         return retval ? retval : buf.actual_profile;
 179 }
 180
 181 static int koneplus_set_actual_profile(struct usb_device *usb_dev,
 182                 int new_profile)
 183 {
 184         struct koneplus_actual_profile buf;
 185
 186         buf.command = KONEPLUS_COMMAND_ACTUAL_PROFILE;
 187         buf.size = sizeof(struct koneplus_actual_profile);
 188         buf.actual_profile = new_profile;
 189
 190         return koneplus_send(usb_dev, KONEPLUS_COMMAND_ACTUAL_PROFILE,
 191                         &buf, sizeof(struct koneplus_actual_profile));
 192 }
 193
 194 static ssize_t koneplus_sysfs_read(struct file *fp, struct kobject *kobj,
 195                 char *buf, loff_t off, size_t count,
 196                 size_t real_size, uint command)
 197 {
 198         struct device *dev =
 199                         container_of(kobj, struct device, kobj)->parent->parent;
 200         struct koneplus_device *koneplus = hid_get_drvdata(dev_get_drvdata(dev));
 201         struct usb_device *usb_dev = interface_to_usbdev(to_usb_interface(dev));
 202         int retval;
 203
 204         if (off >= real_size)
 205                 return 0;
 206
 207         if (off != 0 || count != real_size)
 208                 return -EINVAL;
 209
 210         mutex_lock(&koneplus->koneplus_lock);
 211         retval = roccat_common_receive(usb_dev, command, buf, real_size);
 212         mutex_unlock(&koneplus->koneplus_lock);
 213
 214         if (retval)
 215                 return retval;
 216
 217         return real_size;
 218 }
 219
 220 static ssize_t koneplus_sysfs_write(struct file *fp, struct kobject *kobj,
 221                 void const *buf, loff_t off, size_t count,
 222                 size_t real_size, uint command)
 223 {
 224         struct device *dev =
 225                         container_of(kobj, struct device, kobj)->parent->parent;
 226         struct koneplus_device *koneplus = hid_get_drvdata(dev_get_drvdata(dev));
 227         struct usb_device *usb_dev = interface_to_usbdev(to_usb_interface(dev));
 228         int retval;
 229
 230         if (off != 0 || count != real_size)
 231                 return -EINVAL;
 232
 233         mutex_lock(&koneplus->koneplus_lock);
 234         retval = koneplus_send(usb_dev, command, buf, real_size);
 235         mutex_unlock(&koneplus->koneplus_lock);
 236
 237         if (retval)
 238                 return retval;
 239
 240         return real_size;
 241 }
 242
 243 static ssize_t koneplus_sysfs_write_talk(struct file *fp,
 244                 struct kobject *kobj, struct bin_attribute *attr, char *buf,
 245                 loff_t off, size_t count)
 246 {
 247         return koneplus_sysfs_write(fp, kobj, buf, off, count,
 248                         sizeof(struct koneplus_talk), KONEPLUS_COMMAND_TALK);
 249 }
 250
 251 static ssize_t koneplus_sysfs_write_macro(struct file *fp,
 252                 struct kobject *kobj, struct bin_attribute *attr, char *buf,
 253                 loff_t off, size_t count)
 254 {
 255         return koneplus_sysfs_write(fp, kobj, buf, off, count,
 256                         sizeof(struct koneplus_macro), KONEPLUS_COMMAND_MACRO);
 257 }
 258
 259 static ssize_t koneplus_sysfs_read_sensor(struct file *fp,
 260                 struct kobject *kobj, struct bin_attribute *attr, char *buf,
 261                 loff_t off, size_t count)
 262 {
 263         return koneplus_sysfs_read(fp, kobj, buf, off, count,
 264                         sizeof(struct koneplus_sensor), KONEPLUS_COMMAND_SENSOR);
 265 }
 266
 267 static ssize_t koneplus_sysfs_write_sensor(struct file *fp,
 268                 struct kobject *kobj, struct bin_attribute *attr, char *buf,
 269                 loff_t off, size_t count)
 270 {
 271         return koneplus_sysfs_write(fp, kobj, buf, off, count,
 272                         sizeof(struct koneplus_sensor), KONEPLUS_COMMAND_SENSOR);
 273 }
 274
 275 static ssize_t koneplus_sysfs_write_tcu(struct file *fp,
 276                 struct kobject *kobj, struct bin_attribute *attr, char *buf,
 277                 loff_t off, size_t count)
 278 {
 279         return koneplus_sysfs_write(fp, kobj, buf, off, count,
 280                         sizeof(struct koneplus_tcu), KONEPLUS_COMMAND_TCU);
 281 }
 282
 283 static ssize_t koneplus_sysfs_read_tcu_image(struct file *fp,
 284                 struct kobject *kobj, struct bin_attribute *attr, char *buf,
 285                 loff_t off, size_t count)
 286 {
 287         return koneplus_sysfs_read(fp, kobj, buf, off, count,
 288                         sizeof(struct koneplus_tcu_image), KONEPLUS_COMMAND_TCU);
 289 }
 290
 291 static ssize_t koneplus_sysfs_read_profilex_settings(struct file *fp,
 292                 struct kobject *kobj, struct bin_attribute *attr, char *buf,
 293                 loff_t off, size_t count)
 294 {
 295         struct device *dev =
 296                         container_of(kobj, struct device, kobj)->parent->parent;
 297         struct koneplus_device *koneplus = hid_get_drvdata(dev_get_drvdata(dev));
 298
 299         if (off >= sizeof(struct koneplus_profile_settings))
 300                 return 0;
 301
 302         if (off + count > sizeof(struct koneplus_profile_settings))
 303                 count = sizeof(struct koneplus_profile_settings) - off;
 304
 305         mutex_lock(&koneplus->koneplus_lock);
 306         memcpy(buf, ((char const *)&koneplus->profile_settings[*(uint *)(attr->private)]) + off,
 307                         count);
 308         mutex_unlock(&koneplus->koneplus_lock);
 309
 310         return count;
 311 }
 312
 313 static ssize_t koneplus_sysfs_write_profile_settings(struct file *fp,
 314                 struct kobject *kobj, struct bin_attribute *attr, char *buf,
 315                 loff_t off, size_t count)
 316 {
 317         struct device *dev =
 318                         container_of(kobj, struct device, kobj)->parent->parent;
 319         struct koneplus_device *koneplus = hid_get_drvdata(dev_get_drvdata(dev));
 320         struct usb_device *usb_dev = interface_to_usbdev(to_usb_interface(dev));
 321         int retval = 0;
 322         int difference;
 323         int profile_number;
 324         struct koneplus_profile_settings *profile_settings;
 325
 326         if (off != 0 || count != sizeof(struct koneplus_profile_settings))
 327                 return -EINVAL;
 328
 329         profile_number = ((struct koneplus_profile_settings const *)buf)->number;
 330         profile_settings = &koneplus->profile_settings[profile_number];
 331
 332         mutex_lock(&koneplus->koneplus_lock);
 333         difference = memcmp(buf, profile_settings,
 334                         sizeof(struct koneplus_profile_settings));
 335         if (difference) {
 336                 retval = koneplus_set_profile_settings(usb_dev,
 337                                 (struct koneplus_profile_settings const *)buf);
 338                 if (!retval)
 339                         memcpy(profile_settings, buf,
 340                                         sizeof(struct koneplus_profile_settings));
 341         }
 342         mutex_unlock(&koneplus->koneplus_lock);
 343
 344         if (retval)
 345                 return retval;
 346
 347         return sizeof(struct koneplus_profile_settings);
 348 }
 349
 350 static ssize_t koneplus_sysfs_read_profilex_buttons(struct file *fp,
 351                 struct kobject *kobj, struct bin_attribute *attr, char *buf,
 352                 loff_t off, size_t count)
 353 {
 354         struct device *dev =
 355                         container_of(kobj, struct device, kobj)->parent->parent;
 356         struct koneplus_device *koneplus = hid_get_drvdata(dev_get_drvdata(dev));
 357
 358         if (off >= sizeof(struct koneplus_profile_buttons))
 359                 return 0;
 360
 361         if (off + count > sizeof(struct koneplus_profile_buttons))
 362                 count = sizeof(struct koneplus_profile_buttons) - off;
 363
 364         mutex_lock(&koneplus->koneplus_lock);
 365         memcpy(buf, ((char const *)&koneplus->profile_buttons[*(uint *)(attr->private)]) + off,
 366                         count);
 367         mutex_unlock(&koneplus->koneplus_lock);
 368
 369         return count;
 370 }
 371
 372 static ssize_t koneplus_sysfs_write_profile_buttons(struct file *fp,
 373                 struct kobject *kobj, struct bin_attribute *attr, char *buf,
 374                 loff_t off, size_t count)
 375 {
 376         struct device *dev =
 377                         container_of(kobj, struct device, kobj)->parent->parent;
 378         struct koneplus_device *koneplus = hid_get_drvdata(dev_get_drvdata(dev));
 379         struct usb_device *usb_dev = interface_to_usbdev(to_usb_interface(dev));
 380         int retval = 0;
 381         int difference;
 382         uint profile_number;
 383         struct koneplus_profile_buttons *profile_buttons;
 384
 385         if (off != 0 || count != sizeof(struct koneplus_profile_buttons))
 386                 return -EINVAL;
 387
 388         profile_number = ((struct koneplus_profile_buttons const *)buf)->number;
 389         profile_buttons = &koneplus->profile_buttons[profile_number];
 390
 391         mutex_lock(&koneplus->koneplus_lock);
 392         difference = memcmp(buf, profile_buttons,
 393                         sizeof(struct koneplus_profile_buttons));
 394         if (difference) {
 395                 retval = koneplus_set_profile_buttons(usb_dev,
 396                                 (struct koneplus_profile_buttons const *)buf);
 397                 if (!retval)
 398                         memcpy(profile_buttons, buf,
 399                                         sizeof(struct koneplus_profile_buttons));
 400         }
 401         mutex_unlock(&koneplus->koneplus_lock);
 402
 403         if (retval)
 404                 return retval;
 405
 406         return sizeof(struct koneplus_profile_buttons);
 407 }
 408
 409 static ssize_t koneplus_sysfs_show_actual_profile(struct device *dev,
 410                 struct device_attribute *attr, char *buf)
 411 {
 412         struct koneplus_device *koneplus =
 413                         hid_get_drvdata(dev_get_drvdata(dev->parent->parent));
 414         return snprintf(buf, PAGE_SIZE, "%d\n", koneplus->actual_profile);
 415 }
 416
 417 static ssize_t koneplus_sysfs_set_actual_profile(struct device *dev,
 418                 struct device_attribute *attr, char const *buf, size_t size)
 419 {
 420         struct koneplus_device *koneplus;
 421         struct usb_device *usb_dev;
 422         unsigned long profile;
 423         int retval;
 424         struct koneplus_roccat_report roccat_report;
 425
 426         dev = dev->parent->parent;
 427         koneplus = hid_get_drvdata(dev_get_drvdata(dev));
 428         usb_dev = interface_to_usbdev(to_usb_interface(dev));
 429
 430         retval = strict_strtoul(buf, 10, &profile);
 431         if (retval)
 432                 return retval;
 433
 434         if (profile > 4)
 435                 return -EINVAL;
 436
 437         mutex_lock(&koneplus->koneplus_lock);
 438
 439         retval = koneplus_set_actual_profile(usb_dev, profile);
 440         if (retval) {
 441                 mutex_unlock(&koneplus->koneplus_lock);
 442                 return retval;
 443         }
 444
 445         koneplus_profile_activated(koneplus, profile);
 446
 447         roccat_report.type = KONEPLUS_MOUSE_REPORT_BUTTON_TYPE_PROFILE;
 448         roccat_report.data1 = profile + 1;
 449         roccat_report.data2 = 0;
 450         roccat_report.profile = profile + 1;
 451         roccat_report_event(koneplus->chrdev_minor,
 452                         (uint8_t const *)&roccat_report);
 453
 454         mutex_unlock(&koneplus->koneplus_lock);
 455
 456         return size;
 457 }
 458
 459 static ssize_t koneplus_sysfs_show_firmware_version(struct device *dev,
 460                 struct device_attribute *attr, char *buf)
 461 {
 462         struct koneplus_device *koneplus =
 463                         hid_get_drvdata(dev_get_drvdata(dev->parent->parent));
 464         return snprintf(buf, PAGE_SIZE, "%d\n", koneplus->info.firmware_version);
 465 }
 466
 467 static struct device_attribute koneplus_attributes[] = {
 468         __ATTR(actual_profile, 0660,
 469                         koneplus_sysfs_show_actual_profile,
 470                         koneplus_sysfs_set_actual_profile),
 471         __ATTR(startup_profile, 0660,
 472                         koneplus_sysfs_show_actual_profile,
 473                         koneplus_sysfs_set_actual_profile),
 474         __ATTR(firmware_version, 0440,
 475                         koneplus_sysfs_show_firmware_version, NULL),
 476         __ATTR_NULL
 477 };
 478
 479 static struct bin_attribute koneplus_bin_attributes[] = {
 480         {
 481                 .attr = { .name = "sensor", .mode = 0660 },
 482                 .size = sizeof(struct koneplus_sensor),
 483                 .read = koneplus_sysfs_read_sensor,
 484                 .write = koneplus_sysfs_write_sensor
 485         },
 486         {
 487                 .attr = { .name = "tcu", .mode = 0220 },
 488                 .size = sizeof(struct koneplus_tcu),
 489                 .write = koneplus_sysfs_write_tcu
 490         },
 491         {
 492                 .attr = { .name = "tcu_image", .mode = 0440 },
 493                 .size = sizeof(struct koneplus_tcu_image),
 494                 .read = koneplus_sysfs_read_tcu_image
 495         },
 496         {
 497                 .attr = { .name = "profile_settings", .mode = 0220 },
 498                 .size = sizeof(struct koneplus_profile_settings),
 499                 .write = koneplus_sysfs_write_profile_settings
 500         },
 501         {
 502                 .attr = { .name = "profile1_settings", .mode = 0440 },
 503                 .size = sizeof(struct koneplus_profile_settings),
 504                 .read = koneplus_sysfs_read_profilex_settings,
 505                 .private = &profile_numbers[0]
 506         },
 507         {
 508                 .attr = { .name = "profile2_settings", .mode = 0440 },
 509                 .size = sizeof(struct koneplus_profile_settings),
 510                 .read = koneplus_sysfs_read_profilex_settings,
 511                 .private = &profile_numbers[1]
 512         },
 513         {
 514                 .attr = { .name = "profile3_settings", .mode = 0440 },
 515                 .size = sizeof(struct koneplus_profile_settings),
 516                 .read = koneplus_sysfs_read_profilex_settings,
 517                 .private = &profile_numbers[2]
 518         },
 519         {
 520                 .attr = { .name = "profile4_settings", .mode = 0440 },
 521                 .size = sizeof(struct koneplus_profile_settings),
 522                 .read = koneplus_sysfs_read_profilex_settings,
 523                 .private = &profile_numbers[3]
 524         },
 525         {
 526                 .attr = { .name = "profile5_settings", .mode = 0440 },
 527                 .size = sizeof(struct koneplus_profile_settings),
 528                 .read = koneplus_sysfs_read_profilex_settings,
 529                 .private = &profile_numbers[4]
 530         },
 531         {
 532                 .attr = { .name = "profile_buttons", .mode = 0220 },
 533                 .size = sizeof(struct koneplus_profile_buttons),
 534                 .write = koneplus_sysfs_write_profile_buttons
 535         },
 536         {
 537                 .attr = { .name = "profile1_buttons", .mode = 0440 },
 538                 .size = sizeof(struct koneplus_profile_buttons),
 539                 .read = koneplus_sysfs_read_profilex_buttons,
 540                 .private = &profile_numbers[0]
 541         },
 542         {
 543                 .attr = { .name = "profile2_buttons", .mode = 0440 },
 544                 .size = sizeof(struct koneplus_profile_buttons),
 545                 .read = koneplus_sysfs_read_profilex_buttons,
 546                 .private = &profile_numbers[1]
 547         },
 548         {
 549                 .attr = { .name = "profile3_buttons", .mode = 0440 },
 550                 .size = sizeof(struct koneplus_profile_buttons),
 551                 .read = koneplus_sysfs_read_profilex_buttons,
 552                 .private = &profile_numbers[2]
 553         },
 554         {
 555                 .attr = { .name = "profile4_buttons", .mode = 0440 },
 556                 .size = sizeof(struct koneplus_profile_buttons),
 557                 .read = koneplus_sysfs_read_profilex_buttons,
 558                 .private = &profile_numbers[3]
 559         },
 560         {
 561                 .attr = { .name = "profile5_buttons", .mode = 0440 },
 562                 .size = sizeof(struct koneplus_profile_buttons),
 563                 .read = koneplus_sysfs_read_profilex_buttons,
 564                 .private = &profile_numbers[4]
 565         },
 566         {
 567                 .attr = { .name = "macro", .mode = 0220 },
 568                 .size = sizeof(struct koneplus_macro),
 569                 .write = koneplus_sysfs_write_macro
 570         },
 571         {
 572                 .attr = { .name = "talk", .mode = 0220 },
 573                 .size = sizeof(struct koneplus_talk),
 574                 .write = koneplus_sysfs_write_talk
 575         },
 576         __ATTR_NULL
 577 };
 578
 579 static int koneplus_init_koneplus_device_struct(struct usb_device *usb_dev,
 580                 struct koneplus_device *koneplus)
 581 {
 582         int retval, i;
 583         static uint wait = 200;
 584
 585         mutex_init(&koneplus->koneplus_lock);
 586
 587         retval = koneplus_get_info(usb_dev, &koneplus->info);
 588         if (retval)
 589                 return retval;
 590
 591         for (i = 0; i < 5; ++i) {
 592                 msleep(wait);
 593                 retval = koneplus_get_profile_settings(usb_dev,
 594                                 &koneplus->profile_settings[i], i);
 595                 if (retval)
 596                         return retval;
 597
 598                 msleep(wait);
 599                 retval = koneplus_get_profile_buttons(usb_dev,
 600                                 &koneplus->profile_buttons[i], i);
 601                 if (retval)
 602                         return retval;
 603         }
 604
 605         msleep(wait);
 606         retval = koneplus_get_actual_profile(usb_dev);
 607         if (retval < 0)
 608                 return retval;
 609         koneplus_profile_activated(koneplus, retval);
 610
 611         return 0;
 612 }
 613
 614 static int koneplus_init_specials(struct hid_device *hdev)
 615 {
 616         struct usb_interface *intf = to_usb_interface(hdev->dev.parent);
 617         struct usb_device *usb_dev = interface_to_usbdev(intf);
 618         struct koneplus_device *koneplus;
 619         int retval;
 620
 621         if (intf->cur_altsetting->desc.bInterfaceProtocol
 622                         == USB_INTERFACE_PROTOCOL_MOUSE) {
 623
 624                 koneplus = kzalloc(sizeof(*koneplus), GFP_KERNEL);
 625                 if (!koneplus) {
 626                         hid_err(hdev, "can't alloc device descriptor\n");
 627                         return -ENOMEM;
 628                 }
 629                 hid_set_drvdata(hdev, koneplus);
 630
 631                 retval = koneplus_init_koneplus_device_struct(usb_dev, koneplus);
 632                 if (retval) {
 633                         hid_err(hdev, "couldn't init struct koneplus_device\n");
 634                         goto exit_free;
 635                 }
 636
 637                 retval = roccat_connect(koneplus_class, hdev,
 638                                 sizeof(struct koneplus_roccat_report));
 639                 if (retval < 0) {
 640                         hid_err(hdev, "couldn't init char dev\n");
 641                 } else {
 642                         koneplus->chrdev_minor = retval;
 643                         koneplus->roccat_claimed = 1;
 644                 }
 645         } else {
 646                 hid_set_drvdata(hdev, NULL);
 647         }
 648
 649         return 0;
 650 exit_free:
 651         kfree(koneplus);
 652         return retval;
 653 }
 654
 655 static void koneplus_remove_specials(struct hid_device *hdev)
 656 {
 657         struct usb_interface *intf = to_usb_interface(hdev->dev.parent);
 658         struct koneplus_device *koneplus;
 659
 660         if (intf->cur_altsetting->desc.bInterfaceProtocol
 661                         == USB_INTERFACE_PROTOCOL_MOUSE) {
 662                 koneplus = hid_get_drvdata(hdev);
 663                 if (koneplus->roccat_claimed)
 664                         roccat_disconnect(koneplus->chrdev_minor);
 665                 kfree(koneplus);
 666         }
 667 }
 668
 669 static int koneplus_probe(struct hid_device *hdev,
 670                 const struct hid_device_id *id)
 671 {
 672         int retval;
 673
 674         retval = hid_parse(hdev);
 675         if (retval) {
 676                 hid_err(hdev, "parse failed\n");
 677                 goto exit;
 678         }
 679
 680         retval = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
 681         if (retval) {
 682                 hid_err(hdev, "hw start failed\n");
 683                 goto exit;
 684         }
 685
 686         retval = koneplus_init_specials(hdev);
 687         if (retval) {
 688                 hid_err(hdev, "couldn't install mouse\n");
 689                 goto exit_stop;
 690         }
 691
 692         return 0;
 693
 694 exit_stop:
 695         hid_hw_stop(hdev);
 696 exit:
 697         return retval;
 698 }
 699
 700 static void koneplus_remove(struct hid_device *hdev)
 701 {
 702         koneplus_remove_specials(hdev);
 703         hid_hw_stop(hdev);
 704 }
 705
 706 static void koneplus_keep_values_up_to_date(struct koneplus_device *koneplus,
 707                 u8 const *data)
 708 {
 709         struct koneplus_mouse_report_button const *button_report;
 710
 711         switch (data[0]) {
 712         case KONEPLUS_MOUSE_REPORT_NUMBER_BUTTON:
 713                 button_report = (struct koneplus_mouse_report_button const *)data;
 714                 switch (button_report->type) {
 715                 case KONEPLUS_MOUSE_REPORT_BUTTON_TYPE_PROFILE:
 716                         koneplus_profile_activated(koneplus, button_report->data1 - 1);
 717                         break;
 718                 }
 719                 break;
 720         }
 721 }
 722
 723 static void koneplus_report_to_chrdev(struct koneplus_device const *koneplus,
 724                 u8 const *data)
 725 {
 726         struct koneplus_roccat_report roccat_report;
 727         struct koneplus_mouse_report_button const *button_report;
 728
 729         if (data[0] != KONEPLUS_MOUSE_REPORT_NUMBER_BUTTON)
 730                 return;
 731
 732         button_report = (struct koneplus_mouse_report_button const *)data;
 733
 734         if ((button_report->type == KONEPLUS_MOUSE_REPORT_BUTTON_TYPE_QUICKLAUNCH ||
 735                         button_report->type == KONEPLUS_MOUSE_REPORT_BUTTON_TYPE_TIMER) &&
 736                         button_report->data2 != KONEPLUS_MOUSE_REPORT_BUTTON_ACTION_PRESS)
 737                 return;
 738
 739         roccat_report.type = button_report->type;
 740         roccat_report.data1 = button_report->data1;
 741         roccat_report.data2 = button_report->data2;
 742         roccat_report.profile = koneplus->actual_profile + 1;
 743         roccat_report_event(koneplus->chrdev_minor,
 744                         (uint8_t const *)&roccat_report);
 745 }
 746
 747 static int koneplus_raw_event(struct hid_device *hdev,
 748                 struct hid_report *report, u8 *data, int size)
 749 {
 750         struct usb_interface *intf = to_usb_interface(hdev->dev.parent);
 751         struct koneplus_device *koneplus = hid_get_drvdata(hdev);
 752
 753         if (intf->cur_altsetting->desc.bInterfaceProtocol
 754                         != USB_INTERFACE_PROTOCOL_MOUSE)
 755                 return 0;
 756
 757         if (koneplus == NULL)
 758                 return 0;
 759
 760         koneplus_keep_values_up_to_date(koneplus, data);
 761
 762         if (koneplus->roccat_claimed)
 763                 koneplus_report_to_chrdev(koneplus, data);
 764
 765         return 0;
 766 }
 767
 768 static const struct hid_device_id koneplus_devices[] = {
 769         { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_KONEPLUS) },
 770         { }
 771 };
 772
 773 MODULE_DEVICE_TABLE(hid, koneplus_devices);
 774
 775 static struct hid_driver koneplus_driver = {
 776                 .name = "koneplus",
 777                 .id_table = koneplus_devices,
 778                 .probe = koneplus_probe,
 779                 .remove = koneplus_remove,
 780                 .raw_event = koneplus_raw_event
 781 };
 782
 783 static int __init koneplus_init(void)
 784 {
 785         int retval;
 786
 787         /* class name has to be same as driver name */
 788         koneplus_class = class_create(THIS_MODULE, "koneplus");
 789         if (IS_ERR(koneplus_class))
 790                 return PTR_ERR(koneplus_class);
 791         koneplus_class->dev_attrs = koneplus_attributes;
 792         koneplus_class->dev_bin_attrs = koneplus_bin_attributes;
 793
 794         retval = hid_register_driver(&koneplus_driver);
 795         if (retval)
 796                 class_destroy(koneplus_class);
 797         return retval;
 798 }
 799
 800 static void __exit koneplus_exit(void)
 801 {
 802         hid_unregister_driver(&koneplus_driver);
 803         class_destroy(koneplus_class);
 804 }
 805
 806 module_init(koneplus_init);
 807 module_exit(koneplus_exit);
 808
 809 MODULE_AUTHOR("Stefan Achatz");
 810 MODULE_DESCRIPTION("USB Roccat Kone[+] driver");
 811 MODULE_LICENSE("GPL v2");