drivers/hid/hid-roccat-pyra.c

   1 /*
   2  * Roccat Pyra 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 Pyra is a mobile gamer mouse which comes in wired and wireless
  16  * variant. Wireless variant is not tested.
  17  * Userland tools can be found at http://sourceforge.net/projects/roccat
  18  */
  19
  20 #include <linux/device.h>
  21 #include <linux/input.h>
  22 #include <linux/hid.h>
  23 #include <linux/usb.h>
  24 #include <linux/module.h>
  25 #include <linux/slab.h>
  26 #include "hid-ids.h"
  27 #include "hid-roccat.h"
  28 #include "hid-roccat-pyra.h"
  29
  30 static uint profile_numbers[5] = {0, 1, 2, 3, 4};
  31
  32 /* pyra_class is used for creating sysfs attributes via roccat char device */
  33 static struct class *pyra_class;
  34
  35 static void profile_activated(struct pyra_device *pyra,
  36                 unsigned int new_profile)
  37 {
  38         pyra->actual_profile = new_profile;
  39         pyra->actual_cpi = pyra->profile_settings[pyra->actual_profile].y_cpi;
  40 }
  41
  42 static int pyra_send_control(struct usb_device *usb_dev, int value,
  43                 enum pyra_control_requests request)
  44 {
  45         int len;
  46         struct pyra_control control;
  47
  48         if ((request == PYRA_CONTROL_REQUEST_PROFILE_SETTINGS ||
  49                         request == PYRA_CONTROL_REQUEST_PROFILE_BUTTONS) &&
  50                         (value < 0 || value > 4))
  51                 return -EINVAL;
  52
  53         control.command = PYRA_COMMAND_CONTROL;
  54         control.value = value;
  55         control.request = request;
  56
  57         len = usb_control_msg(usb_dev, usb_sndctrlpipe(usb_dev, 0),
  58                         USB_REQ_SET_CONFIGURATION,
  59                         USB_TYPE_CLASS | USB_RECIP_INTERFACE | USB_DIR_OUT,
  60                         PYRA_USB_COMMAND_CONTROL, 0, (char *)&control,
  61                         sizeof(struct pyra_control),
  62                         USB_CTRL_SET_TIMEOUT);
  63
  64         if (len != sizeof(struct pyra_control))
  65                 return len;
  66
  67         return 0;
  68 }
  69
  70 static int pyra_receive_control_status(struct usb_device *usb_dev)
  71 {
  72         int len;
  73         struct pyra_control control;
  74
  75         do {
  76                 msleep(10);
  77
  78                 len = usb_control_msg(usb_dev, usb_rcvctrlpipe(usb_dev, 0),
  79                                 USB_REQ_CLEAR_FEATURE,
  80                                 USB_TYPE_CLASS | USB_RECIP_INTERFACE |
  81                                 USB_DIR_IN,
  82                                 PYRA_USB_COMMAND_CONTROL, 0, (char *)&control,
  83                                 sizeof(struct pyra_control),
  84                                 USB_CTRL_SET_TIMEOUT);
  85
  86                 /* requested too early, try again */
  87         } while (len == -EPROTO);
  88
  89         if (len == sizeof(struct pyra_control) &&
  90                         control.command == PYRA_COMMAND_CONTROL &&
  91                         control.request == PYRA_CONTROL_REQUEST_STATUS &&
  92                         control.value == 1)
  93                         return 0;
  94         else {
  95                 hid_err(usb_dev, "receive control status: unknown response 0x%x 0x%x\n",
  96                         control.request, control.value);
  97                 return -EINVAL;
  98         }
  99 }
 100
 101 static int pyra_get_profile_settings(struct usb_device *usb_dev,
 102                 struct pyra_profile_settings *buf, int number)
 103 {
 104         int retval;
 105
 106         retval = pyra_send_control(usb_dev, number,
 107                         PYRA_CONTROL_REQUEST_PROFILE_SETTINGS);
 108
 109         if (retval)
 110                 return retval;
 111
 112         retval = usb_control_msg(usb_dev, usb_rcvctrlpipe(usb_dev, 0),
 113                         USB_REQ_CLEAR_FEATURE,
 114                         USB_TYPE_CLASS | USB_RECIP_INTERFACE | USB_DIR_IN,
 115                         PYRA_USB_COMMAND_PROFILE_SETTINGS, 0, (char *)buf,
 116                         sizeof(struct pyra_profile_settings),
 117                         USB_CTRL_SET_TIMEOUT);
 118
 119         if (retval != sizeof(struct pyra_profile_settings))
 120                 return retval;
 121
 122         return 0;
 123 }
 124
 125 static int pyra_get_profile_buttons(struct usb_device *usb_dev,
 126                 struct pyra_profile_buttons *buf, int number)
 127 {
 128         int retval;
 129
 130         retval = pyra_send_control(usb_dev, number,
 131                         PYRA_CONTROL_REQUEST_PROFILE_BUTTONS);
 132
 133         if (retval)
 134                 return retval;
 135
 136         retval = usb_control_msg(usb_dev, usb_rcvctrlpipe(usb_dev, 0),
 137                         USB_REQ_CLEAR_FEATURE,
 138                         USB_TYPE_CLASS | USB_RECIP_INTERFACE | USB_DIR_IN,
 139                         PYRA_USB_COMMAND_PROFILE_BUTTONS, 0, (char *)buf,
 140                         sizeof(struct pyra_profile_buttons),
 141                         USB_CTRL_SET_TIMEOUT);
 142
 143         if (retval != sizeof(struct pyra_profile_buttons))
 144                 return retval;
 145
 146         return 0;
 147 }
 148
 149 static int pyra_get_settings(struct usb_device *usb_dev,
 150                 struct pyra_settings *buf)
 151 {
 152         int len;
 153         len = usb_control_msg(usb_dev, usb_rcvctrlpipe(usb_dev, 0),
 154                         USB_REQ_CLEAR_FEATURE,
 155                         USB_TYPE_CLASS | USB_RECIP_INTERFACE | USB_DIR_IN,
 156                         PYRA_USB_COMMAND_SETTINGS, 0, buf,
 157                         sizeof(struct pyra_settings), USB_CTRL_SET_TIMEOUT);
 158         if (len != sizeof(struct pyra_settings))
 159                 return -EIO;
 160         return 0;
 161 }
 162
 163 static int pyra_get_info(struct usb_device *usb_dev, struct pyra_info *buf)
 164 {
 165         int len;
 166         len = usb_control_msg(usb_dev, usb_rcvctrlpipe(usb_dev, 0),
 167                         USB_REQ_CLEAR_FEATURE,
 168                         USB_TYPE_CLASS | USB_RECIP_INTERFACE | USB_DIR_IN,
 169                         PYRA_USB_COMMAND_INFO, 0, buf,
 170                         sizeof(struct pyra_info), USB_CTRL_SET_TIMEOUT);
 171         if (len != sizeof(struct pyra_info))
 172                 return -EIO;
 173         return 0;
 174 }
 175
 176 static int pyra_set_profile_settings(struct usb_device *usb_dev,
 177                 struct pyra_profile_settings const *settings)
 178 {
 179         int len;
 180         len = usb_control_msg(usb_dev, usb_sndctrlpipe(usb_dev, 0),
 181                         USB_REQ_SET_CONFIGURATION,
 182                         USB_TYPE_CLASS | USB_RECIP_INTERFACE | USB_DIR_OUT,
 183                         PYRA_USB_COMMAND_PROFILE_SETTINGS, 0, (char *)settings,
 184                         sizeof(struct pyra_profile_settings),
 185                         USB_CTRL_SET_TIMEOUT);
 186         if (len != sizeof(struct pyra_profile_settings))
 187                 return -EIO;
 188         if (pyra_receive_control_status(usb_dev))
 189                 return -EIO;
 190         return 0;
 191 }
 192
 193 static int pyra_set_profile_buttons(struct usb_device *usb_dev,
 194                 struct pyra_profile_buttons const *buttons)
 195 {
 196         int len;
 197         len = usb_control_msg(usb_dev, usb_sndctrlpipe(usb_dev, 0),
 198                         USB_REQ_SET_CONFIGURATION,
 199                         USB_TYPE_CLASS | USB_RECIP_INTERFACE | USB_DIR_OUT,
 200                         PYRA_USB_COMMAND_PROFILE_BUTTONS, 0, (char *)buttons,
 201                         sizeof(struct pyra_profile_buttons),
 202                         USB_CTRL_SET_TIMEOUT);
 203         if (len != sizeof(struct pyra_profile_buttons))
 204                 return -EIO;
 205         if (pyra_receive_control_status(usb_dev))
 206                 return -EIO;
 207         return 0;
 208 }
 209
 210 static int pyra_set_settings(struct usb_device *usb_dev,
 211                 struct pyra_settings const *settings)
 212 {
 213         int len;
 214         len = usb_control_msg(usb_dev, usb_sndctrlpipe(usb_dev, 0),
 215                         USB_REQ_SET_CONFIGURATION,
 216                         USB_TYPE_CLASS | USB_RECIP_INTERFACE | USB_DIR_OUT,
 217                         PYRA_USB_COMMAND_SETTINGS, 0, (char *)settings,
 218                         sizeof(struct pyra_settings), USB_CTRL_SET_TIMEOUT);
 219         if (len != sizeof(struct pyra_settings))
 220                 return -EIO;
 221         if (pyra_receive_control_status(usb_dev))
 222                 return -EIO;
 223         return 0;
 224 }
 225
 226 static ssize_t pyra_sysfs_read_profilex_settings(struct file *fp,
 227                 struct kobject *kobj, struct bin_attribute *attr, char *buf,
 228                 loff_t off, size_t count)
 229 {
 230         struct device *dev =
 231                         container_of(kobj, struct device, kobj)->parent->parent;
 232         struct pyra_device *pyra = hid_get_drvdata(dev_get_drvdata(dev));
 233
 234         if (off >= sizeof(struct pyra_profile_settings))
 235                 return 0;
 236
 237         if (off + count > sizeof(struct pyra_profile_settings))
 238                 count = sizeof(struct pyra_profile_settings) - off;
 239
 240         mutex_lock(&pyra->pyra_lock);
 241         memcpy(buf, ((char const *)&pyra->profile_settings[*(uint *)(attr->private)]) + off,
 242                         count);
 243         mutex_unlock(&pyra->pyra_lock);
 244
 245         return count;
 246 }
 247
 248 static ssize_t pyra_sysfs_read_profilex_buttons(struct file *fp,
 249                 struct kobject *kobj, struct bin_attribute *attr, char *buf,
 250                 loff_t off, size_t count)
 251 {
 252         struct device *dev =
 253                         container_of(kobj, struct device, kobj)->parent->parent;
 254         struct pyra_device *pyra = hid_get_drvdata(dev_get_drvdata(dev));
 255
 256         if (off >= sizeof(struct pyra_profile_buttons))
 257                 return 0;
 258
 259         if (off + count > sizeof(struct pyra_profile_buttons))
 260                 count = sizeof(struct pyra_profile_buttons) - off;
 261
 262         mutex_lock(&pyra->pyra_lock);
 263         memcpy(buf, ((char const *)&pyra->profile_buttons[*(uint *)(attr->private)]) + off,
 264                         count);
 265         mutex_unlock(&pyra->pyra_lock);
 266
 267         return count;
 268 }
 269
 270 static ssize_t pyra_sysfs_write_profile_settings(struct file *fp,
 271                 struct kobject *kobj, struct bin_attribute *attr, char *buf,
 272                 loff_t off, size_t count)
 273 {
 274         struct device *dev =
 275                         container_of(kobj, struct device, kobj)->parent->parent;
 276         struct pyra_device *pyra = hid_get_drvdata(dev_get_drvdata(dev));
 277         struct usb_device *usb_dev = interface_to_usbdev(to_usb_interface(dev));
 278         int retval = 0;
 279         int difference;
 280         int profile_number;
 281         struct pyra_profile_settings *profile_settings;
 282
 283         if (off != 0 || count != sizeof(struct pyra_profile_settings))
 284                 return -EINVAL;
 285
 286         profile_number = ((struct pyra_profile_settings const *)buf)->number;
 287         profile_settings = &pyra->profile_settings[profile_number];
 288
 289         mutex_lock(&pyra->pyra_lock);
 290         difference = memcmp(buf, profile_settings,
 291                         sizeof(struct pyra_profile_settings));
 292         if (difference) {
 293                 retval = pyra_set_profile_settings(usb_dev,
 294                                 (struct pyra_profile_settings const *)buf);
 295                 if (!retval)
 296                         memcpy(profile_settings, buf,
 297                                         sizeof(struct pyra_profile_settings));
 298         }
 299         mutex_unlock(&pyra->pyra_lock);
 300
 301         if (retval)
 302                 return retval;
 303
 304         return sizeof(struct pyra_profile_settings);
 305 }
 306
 307 static ssize_t pyra_sysfs_write_profile_buttons(struct file *fp,
 308                 struct kobject *kobj, struct bin_attribute *attr, char *buf,
 309                 loff_t off, size_t count)
 310 {
 311         struct device *dev =
 312                         container_of(kobj, struct device, kobj)->parent->parent;
 313         struct pyra_device *pyra = hid_get_drvdata(dev_get_drvdata(dev));
 314         struct usb_device *usb_dev = interface_to_usbdev(to_usb_interface(dev));
 315         int retval = 0;
 316         int difference;
 317         int profile_number;
 318         struct pyra_profile_buttons *profile_buttons;
 319
 320         if (off != 0 || count != sizeof(struct pyra_profile_buttons))
 321                 return -EINVAL;
 322
 323         profile_number = ((struct pyra_profile_buttons const *)buf)->number;
 324         profile_buttons = &pyra->profile_buttons[profile_number];
 325
 326         mutex_lock(&pyra->pyra_lock);
 327         difference = memcmp(buf, profile_buttons,
 328                         sizeof(struct pyra_profile_buttons));
 329         if (difference) {
 330                 retval = pyra_set_profile_buttons(usb_dev,
 331                                 (struct pyra_profile_buttons const *)buf);
 332                 if (!retval)
 333                         memcpy(profile_buttons, buf,
 334                                         sizeof(struct pyra_profile_buttons));
 335         }
 336         mutex_unlock(&pyra->pyra_lock);
 337
 338         if (retval)
 339                 return retval;
 340
 341         return sizeof(struct pyra_profile_buttons);
 342 }
 343
 344 static ssize_t pyra_sysfs_read_settings(struct file *fp,
 345                 struct kobject *kobj, struct bin_attribute *attr, char *buf,
 346                 loff_t off, size_t count)
 347 {
 348         struct device *dev =
 349                         container_of(kobj, struct device, kobj)->parent->parent;
 350         struct pyra_device *pyra = hid_get_drvdata(dev_get_drvdata(dev));
 351
 352         if (off >= sizeof(struct pyra_settings))
 353                 return 0;
 354
 355         if (off + count > sizeof(struct pyra_settings))
 356                 count = sizeof(struct pyra_settings) - off;
 357
 358         mutex_lock(&pyra->pyra_lock);
 359         memcpy(buf, ((char const *)&pyra->settings) + off, count);
 360         mutex_unlock(&pyra->pyra_lock);
 361
 362         return count;
 363 }
 364
 365 static ssize_t pyra_sysfs_write_settings(struct file *fp,
 366                 struct kobject *kobj, struct bin_attribute *attr, char *buf,
 367                 loff_t off, size_t count)
 368 {
 369         struct device *dev =
 370                         container_of(kobj, struct device, kobj)->parent->parent;
 371         struct pyra_device *pyra = hid_get_drvdata(dev_get_drvdata(dev));
 372         struct usb_device *usb_dev = interface_to_usbdev(to_usb_interface(dev));
 373         int retval = 0;
 374         int difference;
 375
 376         if (off != 0 || count != sizeof(struct pyra_settings))
 377                 return -EINVAL;
 378
 379         mutex_lock(&pyra->pyra_lock);
 380         difference = memcmp(buf, &pyra->settings, sizeof(struct pyra_settings));
 381         if (difference) {
 382                 retval = pyra_set_settings(usb_dev,
 383                                 (struct pyra_settings const *)buf);
 384                 if (!retval)
 385                         memcpy(&pyra->settings, buf,
 386                                         sizeof(struct pyra_settings));
 387         }
 388         mutex_unlock(&pyra->pyra_lock);
 389
 390         if (retval)
 391                 return retval;
 392
 393         profile_activated(pyra, pyra->settings.startup_profile);
 394
 395         return sizeof(struct pyra_settings);
 396 }
 397
 398
 399 static ssize_t pyra_sysfs_show_actual_cpi(struct device *dev,
 400                 struct device_attribute *attr, char *buf)
 401 {
 402         struct pyra_device *pyra =
 403                         hid_get_drvdata(dev_get_drvdata(dev->parent->parent));
 404         return snprintf(buf, PAGE_SIZE, "%d\n", pyra->actual_cpi);
 405 }
 406
 407 static ssize_t pyra_sysfs_show_actual_profile(struct device *dev,
 408                 struct device_attribute *attr, char *buf)
 409 {
 410         struct pyra_device *pyra =
 411                         hid_get_drvdata(dev_get_drvdata(dev->parent->parent));
 412         return snprintf(buf, PAGE_SIZE, "%d\n", pyra->actual_profile);
 413 }
 414
 415 static ssize_t pyra_sysfs_show_firmware_version(struct device *dev,
 416                 struct device_attribute *attr, char *buf)
 417 {
 418         struct pyra_device *pyra =
 419                         hid_get_drvdata(dev_get_drvdata(dev->parent->parent));
 420         return snprintf(buf, PAGE_SIZE, "%d\n", pyra->firmware_version);
 421 }
 422
 423 static ssize_t pyra_sysfs_show_startup_profile(struct device *dev,
 424                 struct device_attribute *attr, char *buf)
 425 {
 426         struct pyra_device *pyra =
 427                         hid_get_drvdata(dev_get_drvdata(dev->parent->parent));
 428         return snprintf(buf, PAGE_SIZE, "%d\n", pyra->settings.startup_profile);
 429 }
 430
 431 static struct device_attribute pyra_attributes[] = {
 432         __ATTR(actual_cpi, 0440, pyra_sysfs_show_actual_cpi, NULL),
 433         __ATTR(actual_profile, 0440, pyra_sysfs_show_actual_profile, NULL),
 434         __ATTR(firmware_version, 0440,
 435                         pyra_sysfs_show_firmware_version, NULL),
 436         __ATTR(startup_profile, 0440,
 437                         pyra_sysfs_show_startup_profile, NULL),
 438         __ATTR_NULL
 439 };
 440
 441 static struct bin_attribute pyra_bin_attributes[] = {
 442         {
 443                 .attr = { .name = "profile_settings", .mode = 0220 },
 444                 .size = sizeof(struct pyra_profile_settings),
 445                 .write = pyra_sysfs_write_profile_settings
 446         },
 447         {
 448                 .attr = { .name = "profile1_settings", .mode = 0440 },
 449                 .size = sizeof(struct pyra_profile_settings),
 450                 .read = pyra_sysfs_read_profilex_settings,
 451                 .private = &profile_numbers[0]
 452         },
 453         {
 454                 .attr = { .name = "profile2_settings", .mode = 0440 },
 455                 .size = sizeof(struct pyra_profile_settings),
 456                 .read = pyra_sysfs_read_profilex_settings,
 457                 .private = &profile_numbers[1]
 458         },
 459         {
 460                 .attr = { .name = "profile3_settings", .mode = 0440 },
 461                 .size = sizeof(struct pyra_profile_settings),
 462                 .read = pyra_sysfs_read_profilex_settings,
 463                 .private = &profile_numbers[2]
 464         },
 465         {
 466                 .attr = { .name = "profile4_settings", .mode = 0440 },
 467                 .size = sizeof(struct pyra_profile_settings),
 468                 .read = pyra_sysfs_read_profilex_settings,
 469                 .private = &profile_numbers[3]
 470         },
 471         {
 472                 .attr = { .name = "profile5_settings", .mode = 0440 },
 473                 .size = sizeof(struct pyra_profile_settings),
 474                 .read = pyra_sysfs_read_profilex_settings,
 475                 .private = &profile_numbers[4]
 476         },
 477         {
 478                 .attr = { .name = "profile_buttons", .mode = 0220 },
 479                 .size = sizeof(struct pyra_profile_buttons),
 480                 .write = pyra_sysfs_write_profile_buttons
 481         },
 482         {
 483                 .attr = { .name = "profile1_buttons", .mode = 0440 },
 484                 .size = sizeof(struct pyra_profile_buttons),
 485                 .read = pyra_sysfs_read_profilex_buttons,
 486                 .private = &profile_numbers[0]
 487         },
 488         {
 489                 .attr = { .name = "profile2_buttons", .mode = 0440 },
 490                 .size = sizeof(struct pyra_profile_buttons),
 491                 .read = pyra_sysfs_read_profilex_buttons,
 492                 .private = &profile_numbers[1]
 493         },
 494         {
 495                 .attr = { .name = "profile3_buttons", .mode = 0440 },
 496                 .size = sizeof(struct pyra_profile_buttons),
 497                 .read = pyra_sysfs_read_profilex_buttons,
 498                 .private = &profile_numbers[2]
 499         },
 500         {
 501                 .attr = { .name = "profile4_buttons", .mode = 0440 },
 502                 .size = sizeof(struct pyra_profile_buttons),
 503                 .read = pyra_sysfs_read_profilex_buttons,
 504                 .private = &profile_numbers[3]
 505         },
 506         {
 507                 .attr = { .name = "profile5_buttons", .mode = 0440 },
 508                 .size = sizeof(struct pyra_profile_buttons),
 509                 .read = pyra_sysfs_read_profilex_buttons,
 510                 .private = &profile_numbers[4]
 511         },
 512         {
 513                 .attr = { .name = "settings", .mode = 0660 },
 514                 .size = sizeof(struct pyra_settings),
 515                 .read = pyra_sysfs_read_settings,
 516                 .write = pyra_sysfs_write_settings
 517         },
 518         __ATTR_NULL
 519 };
 520
 521 static int pyra_init_pyra_device_struct(struct usb_device *usb_dev,
 522                 struct pyra_device *pyra)
 523 {
 524         struct pyra_info *info;
 525         int retval, i;
 526
 527         mutex_init(&pyra->pyra_lock);
 528
 529         info = kmalloc(sizeof(struct pyra_info), GFP_KERNEL);
 530         if (!info)
 531                 return -ENOMEM;
 532         retval = pyra_get_info(usb_dev, info);
 533         if (retval) {
 534                 kfree(info);
 535                 return retval;
 536         }
 537         pyra->firmware_version = info->firmware_version;
 538         kfree(info);
 539
 540         retval = pyra_get_settings(usb_dev, &pyra->settings);
 541         if (retval)
 542                 return retval;
 543
 544         for (i = 0; i < 5; ++i) {
 545                 retval = pyra_get_profile_settings(usb_dev,
 546                                 &pyra->profile_settings[i], i);
 547                 if (retval)
 548                         return retval;
 549
 550                 retval = pyra_get_profile_buttons(usb_dev,
 551                                 &pyra->profile_buttons[i], i);
 552                 if (retval)
 553                         return retval;
 554         }
 555
 556         profile_activated(pyra, pyra->settings.startup_profile);
 557
 558         return 0;
 559 }
 560
 561 static int pyra_init_specials(struct hid_device *hdev)
 562 {
 563         struct usb_interface *intf = to_usb_interface(hdev->dev.parent);
 564         struct usb_device *usb_dev = interface_to_usbdev(intf);
 565         struct pyra_device *pyra;
 566         int retval;
 567
 568         if (intf->cur_altsetting->desc.bInterfaceProtocol
 569                         == USB_INTERFACE_PROTOCOL_MOUSE) {
 570
 571                 pyra = kzalloc(sizeof(*pyra), GFP_KERNEL);
 572                 if (!pyra) {
 573                         hid_err(hdev, "can't alloc device descriptor\n");
 574                         return -ENOMEM;
 575                 }
 576                 hid_set_drvdata(hdev, pyra);
 577
 578                 retval = pyra_init_pyra_device_struct(usb_dev, pyra);
 579                 if (retval) {
 580                         hid_err(hdev, "couldn't init struct pyra_device\n");
 581                         goto exit_free;
 582                 }
 583
 584                 retval = roccat_connect(pyra_class, hdev);
 585                 if (retval < 0) {
 586                         hid_err(hdev, "couldn't init char dev\n");
 587                 } else {
 588                         pyra->chrdev_minor = retval;
 589                         pyra->roccat_claimed = 1;
 590                 }
 591         } else {
 592                 hid_set_drvdata(hdev, NULL);
 593         }
 594
 595         return 0;
 596 exit_free:
 597         kfree(pyra);
 598         return retval;
 599 }
 600
 601 static void pyra_remove_specials(struct hid_device *hdev)
 602 {
 603         struct usb_interface *intf = to_usb_interface(hdev->dev.parent);
 604         struct pyra_device *pyra;
 605
 606         if (intf->cur_altsetting->desc.bInterfaceProtocol
 607                         == USB_INTERFACE_PROTOCOL_MOUSE) {
 608                 pyra = hid_get_drvdata(hdev);
 609                 if (pyra->roccat_claimed)
 610                         roccat_disconnect(pyra->chrdev_minor);
 611                 kfree(hid_get_drvdata(hdev));
 612         }
 613 }
 614
 615 static int pyra_probe(struct hid_device *hdev, const struct hid_device_id *id)
 616 {
 617         int retval;
 618
 619         retval = hid_parse(hdev);
 620         if (retval) {
 621                 hid_err(hdev, "parse failed\n");
 622                 goto exit;
 623         }
 624
 625         retval = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
 626         if (retval) {
 627                 hid_err(hdev, "hw start failed\n");
 628                 goto exit;
 629         }
 630
 631         retval = pyra_init_specials(hdev);
 632         if (retval) {
 633                 hid_err(hdev, "couldn't install mouse\n");
 634                 goto exit_stop;
 635         }
 636         return 0;
 637
 638 exit_stop:
 639         hid_hw_stop(hdev);
 640 exit:
 641         return retval;
 642 }
 643
 644 static void pyra_remove(struct hid_device *hdev)
 645 {
 646         pyra_remove_specials(hdev);
 647         hid_hw_stop(hdev);
 648 }
 649
 650 static void pyra_keep_values_up_to_date(struct pyra_device *pyra,
 651                 u8 const *data)
 652 {
 653         struct pyra_mouse_event_button const *button_event;
 654
 655         switch (data[0]) {
 656         case PYRA_MOUSE_REPORT_NUMBER_BUTTON:
 657                 button_event = (struct pyra_mouse_event_button const *)data;
 658                 switch (button_event->type) {
 659                 case PYRA_MOUSE_EVENT_BUTTON_TYPE_PROFILE_2:
 660                         profile_activated(pyra, button_event->data1 - 1);
 661                         break;
 662                 case PYRA_MOUSE_EVENT_BUTTON_TYPE_CPI:
 663                         pyra->actual_cpi = button_event->data1;
 664                         break;
 665                 }
 666                 break;
 667         }
 668 }
 669
 670 static void pyra_report_to_chrdev(struct pyra_device const *pyra,
 671                 u8 const *data)
 672 {
 673         struct pyra_roccat_report roccat_report;
 674         struct pyra_mouse_event_button const *button_event;
 675
 676         if (data[0] != PYRA_MOUSE_REPORT_NUMBER_BUTTON)
 677                 return;
 678
 679         button_event = (struct pyra_mouse_event_button const *)data;
 680
 681         switch (button_event->type) {
 682         case PYRA_MOUSE_EVENT_BUTTON_TYPE_PROFILE_2:
 683         case PYRA_MOUSE_EVENT_BUTTON_TYPE_CPI:
 684                 roccat_report.type = button_event->type;
 685                 roccat_report.value = button_event->data1;
 686                 roccat_report.key = 0;
 687                 roccat_report_event(pyra->chrdev_minor,
 688                                 (uint8_t const *)&roccat_report,
 689                                 sizeof(struct pyra_roccat_report));
 690                 break;
 691         case PYRA_MOUSE_EVENT_BUTTON_TYPE_MACRO:
 692         case PYRA_MOUSE_EVENT_BUTTON_TYPE_SHORTCUT:
 693         case PYRA_MOUSE_EVENT_BUTTON_TYPE_QUICKLAUNCH:
 694                 if (button_event->data2 == PYRA_MOUSE_EVENT_BUTTON_PRESS) {
 695                         roccat_report.type = button_event->type;
 696                         roccat_report.key = button_event->data1;
 697                         /*
 698                          * pyra reports profile numbers with range 1-5.
 699                          * Keeping this behaviour.
 700                          */
 701                         roccat_report.value = pyra->actual_profile + 1;
 702                         roccat_report_event(pyra->chrdev_minor,
 703                                         (uint8_t const *)&roccat_report,
 704                                         sizeof(struct pyra_roccat_report));
 705                 }
 706                 break;
 707         }
 708 }
 709
 710 static int pyra_raw_event(struct hid_device *hdev, struct hid_report *report,
 711                 u8 *data, int size)
 712 {
 713         struct usb_interface *intf = to_usb_interface(hdev->dev.parent);
 714         struct pyra_device *pyra = hid_get_drvdata(hdev);
 715
 716         if (intf->cur_altsetting->desc.bInterfaceProtocol
 717                         != USB_INTERFACE_PROTOCOL_MOUSE)
 718                 return 0;
 719
 720         pyra_keep_values_up_to_date(pyra, data);
 721
 722         if (pyra->roccat_claimed)
 723                 pyra_report_to_chrdev(pyra, data);
 724
 725         return 0;
 726 }
 727
 728 static const struct hid_device_id pyra_devices[] = {
 729         { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT,
 730                         USB_DEVICE_ID_ROCCAT_PYRA_WIRED) },
 731         /* TODO add USB_DEVICE_ID_ROCCAT_PYRA_WIRELESS after testing */
 732         { }
 733 };
 734
 735 MODULE_DEVICE_TABLE(hid, pyra_devices);
 736
 737 static struct hid_driver pyra_driver = {
 738                 .name = "pyra",
 739                 .id_table = pyra_devices,
 740                 .probe = pyra_probe,
 741                 .remove = pyra_remove,
 742                 .raw_event = pyra_raw_event
 743 };
 744
 745 static int __init pyra_init(void)
 746 {
 747         int retval;
 748
 749         /* class name has to be same as driver name */
 750         pyra_class = class_create(THIS_MODULE, "pyra");
 751         if (IS_ERR(pyra_class))
 752                 return PTR_ERR(pyra_class);
 753         pyra_class->dev_attrs = pyra_attributes;
 754         pyra_class->dev_bin_attrs = pyra_bin_attributes;
 755
 756         retval = hid_register_driver(&pyra_driver);
 757         if (retval)
 758                 class_destroy(pyra_class);
 759         return retval;
 760 }
 761
 762 static void __exit pyra_exit(void)
 763 {
 764         class_destroy(pyra_class);
 765         hid_unregister_driver(&pyra_driver);
 766 }
 767
 768 module_init(pyra_init);
 769 module_exit(pyra_exit);
 770
 771 MODULE_AUTHOR("Stefan Achatz");
 772 MODULE_DESCRIPTION("USB Roccat Pyra driver");
 773 MODULE_LICENSE("GPL v2");