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_USB_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_USB_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_USB_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_USB_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_USB_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_USB_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_USB_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_USB_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_USB_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_macro(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_macro), KONEPLUS_USB_COMMAND_MACRO);
 249 }
 250
 251 static ssize_t koneplus_sysfs_read_sensor(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_read(fp, kobj, buf, off, count,
 256                         sizeof(struct koneplus_sensor), KONEPLUS_USB_COMMAND_SENSOR);
 257 }
 258
 259 static ssize_t koneplus_sysfs_write_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_write(fp, kobj, buf, off, count,
 264                         sizeof(struct koneplus_sensor), KONEPLUS_USB_COMMAND_SENSOR);
 265 }
 266
 267 static ssize_t koneplus_sysfs_write_tcu(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_tcu), KONEPLUS_USB_COMMAND_TCU);
 273 }
 274
 275 static ssize_t koneplus_sysfs_read_tcu_image(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_read(fp, kobj, buf, off, count,
 280                         sizeof(struct koneplus_tcu_image), KONEPLUS_USB_COMMAND_TCU);
 281 }
 282
 283 static ssize_t koneplus_sysfs_read_profilex_settings(struct file *fp,
 284                 struct kobject *kobj, struct bin_attribute *attr, char *buf,
 285                 loff_t off, size_t count)
 286 {
 287         struct device *dev =
 288                         container_of(kobj, struct device, kobj)->parent->parent;
 289         struct koneplus_device *koneplus = hid_get_drvdata(dev_get_drvdata(dev));
 290
 291         if (off >= sizeof(struct koneplus_profile_settings))
 292                 return 0;
 293
 294         if (off + count > sizeof(struct koneplus_profile_settings))
 295                 count = sizeof(struct koneplus_profile_settings) - off;
 296
 297         mutex_lock(&koneplus->koneplus_lock);
 298         memcpy(buf, ((char const *)&koneplus->profile_settings[*(uint *)(attr->private)]) + off,
 299                         count);
 300         mutex_unlock(&koneplus->koneplus_lock);
 301
 302         return count;
 303 }
 304
 305 static ssize_t koneplus_sysfs_write_profile_settings(struct file *fp,
 306                 struct kobject *kobj, struct bin_attribute *attr, char *buf,
 307                 loff_t off, size_t count)
 308 {
 309         struct device *dev =
 310                         container_of(kobj, struct device, kobj)->parent->parent;
 311         struct koneplus_device *koneplus = hid_get_drvdata(dev_get_drvdata(dev));
 312         struct usb_device *usb_dev = interface_to_usbdev(to_usb_interface(dev));
 313         int retval = 0;
 314         int difference;
 315         int profile_number;
 316         struct koneplus_profile_settings *profile_settings;
 317
 318         if (off != 0 || count != sizeof(struct koneplus_profile_settings))
 319                 return -EINVAL;
 320
 321         profile_number = ((struct koneplus_profile_settings const *)buf)->number;
 322         profile_settings = &koneplus->profile_settings[profile_number];
 323
 324         mutex_lock(&koneplus->koneplus_lock);
 325         difference = memcmp(buf, profile_settings,
 326                         sizeof(struct koneplus_profile_settings));
 327         if (difference) {
 328                 retval = koneplus_set_profile_settings(usb_dev,
 329                                 (struct koneplus_profile_settings const *)buf);
 330                 if (!retval)
 331                         memcpy(profile_settings, buf,
 332                                         sizeof(struct koneplus_profile_settings));
 333         }
 334         mutex_unlock(&koneplus->koneplus_lock);
 335
 336         if (retval)
 337                 return retval;
 338
 339         return sizeof(struct koneplus_profile_settings);
 340 }
 341
 342 static ssize_t koneplus_sysfs_read_profilex_buttons(struct file *fp,
 343                 struct kobject *kobj, struct bin_attribute *attr, char *buf,
 344                 loff_t off, size_t count)
 345 {
 346         struct device *dev =
 347                         container_of(kobj, struct device, kobj)->parent->parent;
 348         struct koneplus_device *koneplus = hid_get_drvdata(dev_get_drvdata(dev));
 349
 350         if (off >= sizeof(struct koneplus_profile_buttons))
 351                 return 0;
 352
 353         if (off + count > sizeof(struct koneplus_profile_buttons))
 354                 count = sizeof(struct koneplus_profile_buttons) - off;
 355
 356         mutex_lock(&koneplus->koneplus_lock);
 357         memcpy(buf, ((char const *)&koneplus->profile_buttons[*(uint *)(attr->private)]) + off,
 358                         count);
 359         mutex_unlock(&koneplus->koneplus_lock);
 360
 361         return count;
 362 }
 363
 364 static ssize_t koneplus_sysfs_write_profile_buttons(struct file *fp,
 365                 struct kobject *kobj, struct bin_attribute *attr, char *buf,
 366                 loff_t off, size_t count)
 367 {
 368         struct device *dev =
 369                         container_of(kobj, struct device, kobj)->parent->parent;
 370         struct koneplus_device *koneplus = hid_get_drvdata(dev_get_drvdata(dev));
 371         struct usb_device *usb_dev = interface_to_usbdev(to_usb_interface(dev));
 372         int retval = 0;
 373         int difference;
 374         uint profile_number;
 375         struct koneplus_profile_buttons *profile_buttons;
 376
 377         if (off != 0 || count != sizeof(struct koneplus_profile_buttons))
 378                 return -EINVAL;
 379
 380         profile_number = ((struct koneplus_profile_buttons const *)buf)->number;
 381         profile_buttons = &koneplus->profile_buttons[profile_number];
 382
 383         mutex_lock(&koneplus->koneplus_lock);
 384         difference = memcmp(buf, profile_buttons,
 385                         sizeof(struct koneplus_profile_buttons));
 386         if (difference) {
 387                 retval = koneplus_set_profile_buttons(usb_dev,
 388                                 (struct koneplus_profile_buttons const *)buf);
 389                 if (!retval)
 390                         memcpy(profile_buttons, buf,
 391                                         sizeof(struct koneplus_profile_buttons));
 392         }
 393         mutex_unlock(&koneplus->koneplus_lock);
 394
 395         if (retval)
 396                 return retval;
 397
 398         return sizeof(struct koneplus_profile_buttons);
 399 }
 400
 401 static ssize_t koneplus_sysfs_show_actual_profile(struct device *dev,
 402                 struct device_attribute *attr, char *buf)
 403 {
 404         struct koneplus_device *koneplus =
 405                         hid_get_drvdata(dev_get_drvdata(dev->parent->parent));
 406         return snprintf(buf, PAGE_SIZE, "%d\n", koneplus->actual_profile);
 407 }
 408
 409 static ssize_t koneplus_sysfs_set_actual_profile(struct device *dev,
 410                 struct device_attribute *attr, char const *buf, size_t size)
 411 {
 412         struct koneplus_device *koneplus;
 413         struct usb_device *usb_dev;
 414         unsigned long profile;
 415         int retval;
 416         struct koneplus_roccat_report roccat_report;
 417
 418         dev = dev->parent->parent;
 419         koneplus = hid_get_drvdata(dev_get_drvdata(dev));
 420         usb_dev = interface_to_usbdev(to_usb_interface(dev));
 421
 422         retval = strict_strtoul(buf, 10, &profile);
 423         if (retval)
 424                 return retval;
 425
 426         mutex_lock(&koneplus->koneplus_lock);
 427
 428         retval = koneplus_set_actual_profile(usb_dev, profile);
 429         if (retval) {
 430                 mutex_unlock(&koneplus->koneplus_lock);
 431                 return retval;
 432         }
 433
 434         koneplus->actual_profile = profile;
 435
 436         roccat_report.type = KONEPLUS_MOUSE_REPORT_BUTTON_TYPE_PROFILE;
 437         roccat_report.data1 = profile + 1;
 438         roccat_report.data2 = 0;
 439         roccat_report.profile = profile + 1;
 440         roccat_report_event(koneplus->chrdev_minor,
 441                         (uint8_t const *)&roccat_report);
 442
 443         mutex_unlock(&koneplus->koneplus_lock);
 444
 445         return size;
 446 }
 447
 448 static ssize_t koneplus_sysfs_show_firmware_version(struct device *dev,
 449                 struct device_attribute *attr, char *buf)
 450 {
 451         struct koneplus_device *koneplus =
 452                         hid_get_drvdata(dev_get_drvdata(dev->parent->parent));
 453         return snprintf(buf, PAGE_SIZE, "%d\n", koneplus->info.firmware_version);
 454 }
 455
 456 static struct device_attribute koneplus_attributes[] = {
 457         __ATTR(actual_profile, 0660,
 458                         koneplus_sysfs_show_actual_profile,
 459                         koneplus_sysfs_set_actual_profile),
 460         __ATTR(startup_profile, 0660,
 461                         koneplus_sysfs_show_actual_profile,
 462                         koneplus_sysfs_set_actual_profile),
 463         __ATTR(firmware_version, 0440,
 464                         koneplus_sysfs_show_firmware_version, NULL),
 465         __ATTR_NULL
 466 };
 467
 468 static struct bin_attribute koneplus_bin_attributes[] = {
 469         {
 470                 .attr = { .name = "sensor", .mode = 0660 },
 471                 .size = sizeof(struct koneplus_sensor),
 472                 .read = koneplus_sysfs_read_sensor,
 473                 .write = koneplus_sysfs_write_sensor
 474         },
 475         {
 476                 .attr = { .name = "tcu", .mode = 0220 },
 477                 .size = sizeof(struct koneplus_tcu),
 478                 .write = koneplus_sysfs_write_tcu
 479         },
 480         {
 481                 .attr = { .name = "tcu_image", .mode = 0440 },
 482                 .size = sizeof(struct koneplus_tcu_image),
 483                 .read = koneplus_sysfs_read_tcu_image
 484         },
 485         {
 486                 .attr = { .name = "profile_settings", .mode = 0220 },
 487                 .size = sizeof(struct koneplus_profile_settings),
 488                 .write = koneplus_sysfs_write_profile_settings
 489         },
 490         {
 491                 .attr = { .name = "profile1_settings", .mode = 0440 },
 492                 .size = sizeof(struct koneplus_profile_settings),
 493                 .read = koneplus_sysfs_read_profilex_settings,
 494                 .private = &profile_numbers[0]
 495         },
 496         {
 497                 .attr = { .name = "profile2_settings", .mode = 0440 },
 498                 .size = sizeof(struct koneplus_profile_settings),
 499                 .read = koneplus_sysfs_read_profilex_settings,
 500                 .private = &profile_numbers[1]
 501         },
 502         {
 503                 .attr = { .name = "profile3_settings", .mode = 0440 },
 504                 .size = sizeof(struct koneplus_profile_settings),
 505                 .read = koneplus_sysfs_read_profilex_settings,
 506                 .private = &profile_numbers[2]
 507         },
 508         {
 509                 .attr = { .name = "profile4_settings", .mode = 0440 },
 510                 .size = sizeof(struct koneplus_profile_settings),
 511                 .read = koneplus_sysfs_read_profilex_settings,
 512                 .private = &profile_numbers[3]
 513         },
 514         {
 515                 .attr = { .name = "profile5_settings", .mode = 0440 },
 516                 .size = sizeof(struct koneplus_profile_settings),
 517                 .read = koneplus_sysfs_read_profilex_settings,
 518                 .private = &profile_numbers[4]
 519         },
 520         {
 521                 .attr = { .name = "profile_buttons", .mode = 0220 },
 522                 .size = sizeof(struct koneplus_profile_buttons),
 523                 .write = koneplus_sysfs_write_profile_buttons
 524         },
 525         {
 526                 .attr = { .name = "profile1_buttons", .mode = 0440 },
 527                 .size = sizeof(struct koneplus_profile_buttons),
 528                 .read = koneplus_sysfs_read_profilex_buttons,
 529                 .private = &profile_numbers[0]
 530         },
 531         {
 532                 .attr = { .name = "profile2_buttons", .mode = 0440 },
 533                 .size = sizeof(struct koneplus_profile_buttons),
 534                 .read = koneplus_sysfs_read_profilex_buttons,
 535                 .private = &profile_numbers[1]
 536         },
 537         {
 538                 .attr = { .name = "profile3_buttons", .mode = 0440 },
 539                 .size = sizeof(struct koneplus_profile_buttons),
 540                 .read = koneplus_sysfs_read_profilex_buttons,
 541                 .private = &profile_numbers[2]
 542         },
 543         {
 544                 .attr = { .name = "profile4_buttons", .mode = 0440 },
 545                 .size = sizeof(struct koneplus_profile_buttons),
 546                 .read = koneplus_sysfs_read_profilex_buttons,
 547                 .private = &profile_numbers[3]
 548         },
 549         {
 550                 .attr = { .name = "profile5_buttons", .mode = 0440 },
 551                 .size = sizeof(struct koneplus_profile_buttons),
 552                 .read = koneplus_sysfs_read_profilex_buttons,
 553                 .private = &profile_numbers[4]
 554         },
 555         {
 556                 .attr = { .name = "macro", .mode = 0220 },
 557                 .size = sizeof(struct koneplus_macro),
 558                 .write = koneplus_sysfs_write_macro
 559         },
 560         __ATTR_NULL
 561 };
 562
 563 static int koneplus_init_koneplus_device_struct(struct usb_device *usb_dev,
 564                 struct koneplus_device *koneplus)
 565 {
 566         int retval, i;
 567         static uint wait = 200;
 568
 569         mutex_init(&koneplus->koneplus_lock);
 570
 571         retval = koneplus_get_info(usb_dev, &koneplus->info);
 572         if (retval)
 573                 return retval;
 574
 575         for (i = 0; i < 5; ++i) {
 576                 msleep(wait);
 577                 retval = koneplus_get_profile_settings(usb_dev,
 578                                 &koneplus->profile_settings[i], i);
 579                 if (retval)
 580                         return retval;
 581
 582                 msleep(wait);
 583                 retval = koneplus_get_profile_buttons(usb_dev,
 584                                 &koneplus->profile_buttons[i], i);
 585                 if (retval)
 586                         return retval;
 587         }
 588
 589         msleep(wait);
 590         retval = koneplus_get_actual_profile(usb_dev);
 591         if (retval < 0)
 592                 return retval;
 593         koneplus_profile_activated(koneplus, retval);
 594
 595         return 0;
 596 }
 597
 598 static int koneplus_init_specials(struct hid_device *hdev)
 599 {
 600         struct usb_interface *intf = to_usb_interface(hdev->dev.parent);
 601         struct usb_device *usb_dev = interface_to_usbdev(intf);
 602         struct koneplus_device *koneplus;
 603         int retval;
 604
 605         if (intf->cur_altsetting->desc.bInterfaceProtocol
 606                         == USB_INTERFACE_PROTOCOL_MOUSE) {
 607
 608                 koneplus = kzalloc(sizeof(*koneplus), GFP_KERNEL);
 609                 if (!koneplus) {
 610                         hid_err(hdev, "can't alloc device descriptor\n");
 611                         return -ENOMEM;
 612                 }
 613                 hid_set_drvdata(hdev, koneplus);
 614
 615                 retval = koneplus_init_koneplus_device_struct(usb_dev, koneplus);
 616                 if (retval) {
 617                         hid_err(hdev, "couldn't init struct koneplus_device\n");
 618                         goto exit_free;
 619                 }
 620
 621                 retval = roccat_connect(koneplus_class, hdev,
 622                                 sizeof(struct koneplus_roccat_report));
 623                 if (retval < 0) {
 624                         hid_err(hdev, "couldn't init char dev\n");
 625                 } else {
 626                         koneplus->chrdev_minor = retval;
 627                         koneplus->roccat_claimed = 1;
 628                 }
 629         } else {
 630                 hid_set_drvdata(hdev, NULL);
 631         }
 632
 633         return 0;
 634 exit_free:
 635         kfree(koneplus);
 636         return retval;
 637 }
 638
 639 static void koneplus_remove_specials(struct hid_device *hdev)
 640 {
 641         struct usb_interface *intf = to_usb_interface(hdev->dev.parent);
 642         struct koneplus_device *koneplus;
 643
 644         if (intf->cur_altsetting->desc.bInterfaceProtocol
 645                         == USB_INTERFACE_PROTOCOL_MOUSE) {
 646                 koneplus = hid_get_drvdata(hdev);
 647                 if (koneplus->roccat_claimed)
 648                         roccat_disconnect(koneplus->chrdev_minor);
 649                 kfree(koneplus);
 650         }
 651 }
 652
 653 static int koneplus_probe(struct hid_device *hdev,
 654                 const struct hid_device_id *id)
 655 {
 656         int retval;
 657
 658         retval = hid_parse(hdev);
 659         if (retval) {
 660                 hid_err(hdev, "parse failed\n");
 661                 goto exit;
 662         }
 663
 664         retval = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
 665         if (retval) {
 666                 hid_err(hdev, "hw start failed\n");
 667                 goto exit;
 668         }
 669
 670         retval = koneplus_init_specials(hdev);
 671         if (retval) {
 672                 hid_err(hdev, "couldn't install mouse\n");
 673                 goto exit_stop;
 674         }
 675
 676         return 0;
 677
 678 exit_stop:
 679         hid_hw_stop(hdev);
 680 exit:
 681         return retval;
 682 }
 683
 684 static void koneplus_remove(struct hid_device *hdev)
 685 {
 686         koneplus_remove_specials(hdev);
 687         hid_hw_stop(hdev);
 688 }
 689
 690 static void koneplus_keep_values_up_to_date(struct koneplus_device *koneplus,
 691                 u8 const *data)
 692 {
 693         struct koneplus_mouse_report_button const *button_report;
 694
 695         switch (data[0]) {
 696         case KONEPLUS_MOUSE_REPORT_NUMBER_BUTTON:
 697                 button_report = (struct koneplus_mouse_report_button const *)data;
 698                 switch (button_report->type) {
 699                 case KONEPLUS_MOUSE_REPORT_BUTTON_TYPE_PROFILE:
 700                         koneplus_profile_activated(koneplus, button_report->data1 - 1);
 701                         break;
 702                 }
 703                 break;
 704         }
 705 }
 706
 707 static void koneplus_report_to_chrdev(struct koneplus_device const *koneplus,
 708                 u8 const *data)
 709 {
 710         struct koneplus_roccat_report roccat_report;
 711         struct koneplus_mouse_report_button const *button_report;
 712
 713         if (data[0] != KONEPLUS_MOUSE_REPORT_NUMBER_BUTTON)
 714                 return;
 715
 716         button_report = (struct koneplus_mouse_report_button const *)data;
 717
 718         if ((button_report->type == KONEPLUS_MOUSE_REPORT_BUTTON_TYPE_QUICKLAUNCH ||
 719                         button_report->type == KONEPLUS_MOUSE_REPORT_BUTTON_TYPE_TIMER) &&
 720                         button_report->data2 != KONEPLUS_MOUSE_REPORT_BUTTON_ACTION_PRESS)
 721                 return;
 722
 723         roccat_report.type = button_report->type;
 724         roccat_report.data1 = button_report->data1;
 725         roccat_report.data2 = button_report->data2;
 726         roccat_report.profile = koneplus->actual_profile + 1;
 727         roccat_report_event(koneplus->chrdev_minor,
 728                         (uint8_t const *)&roccat_report);
 729 }
 730
 731 static int koneplus_raw_event(struct hid_device *hdev,
 732                 struct hid_report *report, u8 *data, int size)
 733 {
 734         struct usb_interface *intf = to_usb_interface(hdev->dev.parent);
 735         struct koneplus_device *koneplus = hid_get_drvdata(hdev);
 736
 737         if (intf->cur_altsetting->desc.bInterfaceProtocol
 738                         != USB_INTERFACE_PROTOCOL_MOUSE)
 739                 return 0;
 740
 741         koneplus_keep_values_up_to_date(koneplus, data);
 742
 743         if (koneplus->roccat_claimed)
 744                 koneplus_report_to_chrdev(koneplus, data);
 745
 746         return 0;
 747 }
 748
 749 static const struct hid_device_id koneplus_devices[] = {
 750         { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_KONEPLUS) },
 751         { }
 752 };
 753
 754 MODULE_DEVICE_TABLE(hid, koneplus_devices);
 755
 756 static struct hid_driver koneplus_driver = {
 757                 .name = "koneplus",
 758                 .id_table = koneplus_devices,
 759                 .probe = koneplus_probe,
 760                 .remove = koneplus_remove,
 761                 .raw_event = koneplus_raw_event
 762 };
 763
 764 static int __init koneplus_init(void)
 765 {
 766         int retval;
 767
 768         /* class name has to be same as driver name */
 769         koneplus_class = class_create(THIS_MODULE, "koneplus");
 770         if (IS_ERR(koneplus_class))
 771                 return PTR_ERR(koneplus_class);
 772         koneplus_class->dev_attrs = koneplus_attributes;
 773         koneplus_class->dev_bin_attrs = koneplus_bin_attributes;
 774
 775         retval = hid_register_driver(&koneplus_driver);
 776         if (retval)
 777                 class_destroy(koneplus_class);
 778         return retval;
 779 }
 780
 781 static void __exit koneplus_exit(void)
 782 {
 783         hid_unregister_driver(&koneplus_driver);
 784         class_destroy(koneplus_class);
 785 }
 786
 787 module_init(koneplus_init);
 788 module_exit(koneplus_exit);
 789
 790 MODULE_AUTHOR("Stefan Achatz");
 791 MODULE_DESCRIPTION("USB Roccat Kone[+] driver");
 792 MODULE_LICENSE("GPL v2");