317c9c2c0a7ce9d019ece767a140a451ad249379
[muen/linux.git] / drivers / hid / hid-roccat-kovaplus.c
1 /*
2  * Roccat Kova[+] driver for Linux
3  *
4  * Copyright (c) 2011 Stefan Achatz <erazor_de@users.sourceforge.net>
5  */
6
7 /*
8  * This program is free software; you can redistribute it and/or modify it
9  * under the terms of the GNU General Public License as published by the Free
10  * Software Foundation; either version 2 of the License, or (at your option)
11  * any later version.
12  */
13
14 /*
15  * Roccat Kova[+] is a bigger version of the Pyra with two more side buttons.
16  */
17
18 #include <linux/device.h>
19 #include <linux/input.h>
20 #include <linux/hid.h>
21 #include <linux/module.h>
22 #include <linux/slab.h>
23 #include <linux/hid-roccat.h>
24 #include "hid-ids.h"
25 #include "hid-roccat-common.h"
26 #include "hid-roccat-kovaplus.h"
27
28 static uint profile_numbers[5] = {0, 1, 2, 3, 4};
29
30 static struct class *kovaplus_class;
31
32 static uint kovaplus_convert_event_cpi(uint value)
33 {
34         return (value == 7 ? 4 : (value == 4 ? 3 : value));
35 }
36
37 static void kovaplus_profile_activated(struct kovaplus_device *kovaplus,
38                 uint new_profile_index)
39 {
40         if (new_profile_index >= ARRAY_SIZE(kovaplus->profile_settings))
41                 return;
42         kovaplus->actual_profile = new_profile_index;
43         kovaplus->actual_cpi = kovaplus->profile_settings[new_profile_index].cpi_startup_level;
44         kovaplus->actual_x_sensitivity = kovaplus->profile_settings[new_profile_index].sensitivity_x;
45         kovaplus->actual_y_sensitivity = kovaplus->profile_settings[new_profile_index].sensitivity_y;
46 }
47
48 static int kovaplus_send_control(struct usb_device *usb_dev, uint value,
49                 enum kovaplus_control_requests request)
50 {
51         int retval;
52         struct roccat_common2_control control;
53
54         if ((request == KOVAPLUS_CONTROL_REQUEST_PROFILE_SETTINGS ||
55                         request == KOVAPLUS_CONTROL_REQUEST_PROFILE_BUTTONS) &&
56                         value > 4)
57                 return -EINVAL;
58
59         control.command = ROCCAT_COMMON_COMMAND_CONTROL;
60         control.value = value;
61         control.request = request;
62
63         retval = roccat_common2_send(usb_dev, ROCCAT_COMMON_COMMAND_CONTROL,
64                         &control, sizeof(struct roccat_common2_control));
65
66         return retval;
67 }
68
69 static int kovaplus_select_profile(struct usb_device *usb_dev, uint number,
70                 enum kovaplus_control_requests request)
71 {
72         return kovaplus_send_control(usb_dev, number, request);
73 }
74
75 static int kovaplus_get_profile_settings(struct usb_device *usb_dev,
76                 struct kovaplus_profile_settings *buf, uint number)
77 {
78         int retval;
79
80         retval = kovaplus_select_profile(usb_dev, number,
81                         KOVAPLUS_CONTROL_REQUEST_PROFILE_SETTINGS);
82         if (retval)
83                 return retval;
84
85         return roccat_common2_receive(usb_dev, KOVAPLUS_COMMAND_PROFILE_SETTINGS,
86                         buf, KOVAPLUS_SIZE_PROFILE_SETTINGS);
87 }
88
89 static int kovaplus_get_profile_buttons(struct usb_device *usb_dev,
90                 struct kovaplus_profile_buttons *buf, int number)
91 {
92         int retval;
93
94         retval = kovaplus_select_profile(usb_dev, number,
95                         KOVAPLUS_CONTROL_REQUEST_PROFILE_BUTTONS);
96         if (retval)
97                 return retval;
98
99         return roccat_common2_receive(usb_dev, KOVAPLUS_COMMAND_PROFILE_BUTTONS,
100                         buf, KOVAPLUS_SIZE_PROFILE_BUTTONS);
101 }
102
103 /* retval is 0-4 on success, < 0 on error */
104 static int kovaplus_get_actual_profile(struct usb_device *usb_dev)
105 {
106         struct kovaplus_actual_profile buf;
107         int retval;
108
109         retval = roccat_common2_receive(usb_dev, KOVAPLUS_COMMAND_ACTUAL_PROFILE,
110                         &buf, sizeof(struct kovaplus_actual_profile));
111
112         return retval ? retval : buf.actual_profile;
113 }
114
115 static int kovaplus_set_actual_profile(struct usb_device *usb_dev,
116                 int new_profile)
117 {
118         struct kovaplus_actual_profile buf;
119
120         buf.command = KOVAPLUS_COMMAND_ACTUAL_PROFILE;
121         buf.size = sizeof(struct kovaplus_actual_profile);
122         buf.actual_profile = new_profile;
123
124         return roccat_common2_send_with_status(usb_dev,
125                         KOVAPLUS_COMMAND_ACTUAL_PROFILE,
126                         &buf, sizeof(struct kovaplus_actual_profile));
127 }
128
129 static ssize_t kovaplus_sysfs_read(struct file *fp, struct kobject *kobj,
130                 char *buf, loff_t off, size_t count,
131                 size_t real_size, uint command)
132 {
133         struct device *dev = kobj_to_dev(kobj)->parent->parent;
134         struct kovaplus_device *kovaplus = hid_get_drvdata(dev_get_drvdata(dev));
135         struct usb_device *usb_dev = interface_to_usbdev(to_usb_interface(dev));
136         int retval;
137
138         if (off >= real_size)
139                 return 0;
140
141         if (off != 0 || count != real_size)
142                 return -EINVAL;
143
144         mutex_lock(&kovaplus->kovaplus_lock);
145         retval = roccat_common2_receive(usb_dev, command, buf, real_size);
146         mutex_unlock(&kovaplus->kovaplus_lock);
147
148         if (retval)
149                 return retval;
150
151         return real_size;
152 }
153
154 static ssize_t kovaplus_sysfs_write(struct file *fp, struct kobject *kobj,
155                 void const *buf, loff_t off, size_t count,
156                 size_t real_size, uint command)
157 {
158         struct device *dev = kobj_to_dev(kobj)->parent->parent;
159         struct kovaplus_device *kovaplus = hid_get_drvdata(dev_get_drvdata(dev));
160         struct usb_device *usb_dev = interface_to_usbdev(to_usb_interface(dev));
161         int retval;
162
163         if (off != 0 || count != real_size)
164                 return -EINVAL;
165
166         mutex_lock(&kovaplus->kovaplus_lock);
167         retval = roccat_common2_send_with_status(usb_dev, command,
168                         buf, real_size);
169         mutex_unlock(&kovaplus->kovaplus_lock);
170
171         if (retval)
172                 return retval;
173
174         return real_size;
175 }
176
177 #define KOVAPLUS_SYSFS_W(thingy, THINGY) \
178 static ssize_t kovaplus_sysfs_write_ ## thingy(struct file *fp, \
179                 struct kobject *kobj, struct bin_attribute *attr, char *buf, \
180                 loff_t off, size_t count) \
181 { \
182         return kovaplus_sysfs_write(fp, kobj, buf, off, count, \
183                         KOVAPLUS_SIZE_ ## THINGY, KOVAPLUS_COMMAND_ ## THINGY); \
184 }
185
186 #define KOVAPLUS_SYSFS_R(thingy, THINGY) \
187 static ssize_t kovaplus_sysfs_read_ ## thingy(struct file *fp, \
188                 struct kobject *kobj, struct bin_attribute *attr, char *buf, \
189                 loff_t off, size_t count) \
190 { \
191         return kovaplus_sysfs_read(fp, kobj, buf, off, count, \
192                         KOVAPLUS_SIZE_ ## THINGY, KOVAPLUS_COMMAND_ ## THINGY); \
193 }
194
195 #define KOVAPLUS_SYSFS_RW(thingy, THINGY) \
196 KOVAPLUS_SYSFS_W(thingy, THINGY) \
197 KOVAPLUS_SYSFS_R(thingy, THINGY)
198
199 #define KOVAPLUS_BIN_ATTRIBUTE_RW(thingy, THINGY) \
200 KOVAPLUS_SYSFS_RW(thingy, THINGY); \
201 static struct bin_attribute bin_attr_##thingy = { \
202         .attr = { .name = #thingy, .mode = 0660 }, \
203         .size = KOVAPLUS_SIZE_ ## THINGY, \
204         .read = kovaplus_sysfs_read_ ## thingy, \
205         .write = kovaplus_sysfs_write_ ## thingy \
206 }
207
208 #define KOVAPLUS_BIN_ATTRIBUTE_W(thingy, THINGY) \
209 KOVAPLUS_SYSFS_W(thingy, THINGY); \
210 static struct bin_attribute bin_attr_##thingy = { \
211         .attr = { .name = #thingy, .mode = 0220 }, \
212         .size = KOVAPLUS_SIZE_ ## THINGY, \
213         .write = kovaplus_sysfs_write_ ## thingy \
214 }
215 KOVAPLUS_BIN_ATTRIBUTE_W(control, CONTROL);
216 KOVAPLUS_BIN_ATTRIBUTE_RW(info, INFO);
217 KOVAPLUS_BIN_ATTRIBUTE_RW(profile_settings, PROFILE_SETTINGS);
218 KOVAPLUS_BIN_ATTRIBUTE_RW(profile_buttons, PROFILE_BUTTONS);
219
220 static ssize_t kovaplus_sysfs_read_profilex_settings(struct file *fp,
221                 struct kobject *kobj, struct bin_attribute *attr, char *buf,
222                 loff_t off, size_t count)
223 {
224         struct device *dev = kobj_to_dev(kobj)->parent->parent;
225         struct usb_device *usb_dev = interface_to_usbdev(to_usb_interface(dev));
226         ssize_t retval;
227
228         retval = kovaplus_select_profile(usb_dev, *(uint *)(attr->private),
229                         KOVAPLUS_CONTROL_REQUEST_PROFILE_SETTINGS);
230         if (retval)
231                 return retval;
232
233         return kovaplus_sysfs_read(fp, kobj, buf, off, count,
234                         KOVAPLUS_SIZE_PROFILE_SETTINGS,
235                         KOVAPLUS_COMMAND_PROFILE_SETTINGS);
236 }
237
238 static ssize_t kovaplus_sysfs_read_profilex_buttons(struct file *fp,
239                 struct kobject *kobj, struct bin_attribute *attr, char *buf,
240                 loff_t off, size_t count)
241 {
242         struct device *dev = kobj_to_dev(kobj)->parent->parent;
243         struct usb_device *usb_dev = interface_to_usbdev(to_usb_interface(dev));
244         ssize_t retval;
245
246         retval = kovaplus_select_profile(usb_dev, *(uint *)(attr->private),
247                         KOVAPLUS_CONTROL_REQUEST_PROFILE_BUTTONS);
248         if (retval)
249                 return retval;
250
251         return kovaplus_sysfs_read(fp, kobj, buf, off, count,
252                         KOVAPLUS_SIZE_PROFILE_BUTTONS,
253                         KOVAPLUS_COMMAND_PROFILE_BUTTONS);
254 }
255
256 #define PROFILE_ATTR(number)                                            \
257 static struct bin_attribute bin_attr_profile##number##_settings = {     \
258         .attr = { .name = "profile" #number "_settings", .mode = 0440 },        \
259         .size = KOVAPLUS_SIZE_PROFILE_SETTINGS,                         \
260         .read = kovaplus_sysfs_read_profilex_settings,                  \
261         .private = &profile_numbers[number-1],                          \
262 };                                                                      \
263 static struct bin_attribute bin_attr_profile##number##_buttons = {      \
264         .attr = { .name = "profile" #number "_buttons", .mode = 0440 }, \
265         .size = KOVAPLUS_SIZE_PROFILE_BUTTONS,                          \
266         .read = kovaplus_sysfs_read_profilex_buttons,                   \
267         .private = &profile_numbers[number-1],                          \
268 };
269 PROFILE_ATTR(1);
270 PROFILE_ATTR(2);
271 PROFILE_ATTR(3);
272 PROFILE_ATTR(4);
273 PROFILE_ATTR(5);
274
275 static ssize_t kovaplus_sysfs_show_actual_profile(struct device *dev,
276                 struct device_attribute *attr, char *buf)
277 {
278         struct kovaplus_device *kovaplus =
279                         hid_get_drvdata(dev_get_drvdata(dev->parent->parent));
280         return snprintf(buf, PAGE_SIZE, "%d\n", kovaplus->actual_profile);
281 }
282
283 static ssize_t kovaplus_sysfs_set_actual_profile(struct device *dev,
284                 struct device_attribute *attr, char const *buf, size_t size)
285 {
286         struct kovaplus_device *kovaplus;
287         struct usb_device *usb_dev;
288         unsigned long profile;
289         int retval;
290         struct kovaplus_roccat_report roccat_report;
291
292         dev = dev->parent->parent;
293         kovaplus = hid_get_drvdata(dev_get_drvdata(dev));
294         usb_dev = interface_to_usbdev(to_usb_interface(dev));
295
296         retval = kstrtoul(buf, 10, &profile);
297         if (retval)
298                 return retval;
299
300         if (profile >= 5)
301                 return -EINVAL;
302
303         mutex_lock(&kovaplus->kovaplus_lock);
304         retval = kovaplus_set_actual_profile(usb_dev, profile);
305         if (retval) {
306                 mutex_unlock(&kovaplus->kovaplus_lock);
307                 return retval;
308         }
309
310         kovaplus_profile_activated(kovaplus, profile);
311
312         roccat_report.type = KOVAPLUS_MOUSE_REPORT_BUTTON_TYPE_PROFILE_1;
313         roccat_report.profile = profile + 1;
314         roccat_report.button = 0;
315         roccat_report.data1 = profile + 1;
316         roccat_report.data2 = 0;
317         roccat_report_event(kovaplus->chrdev_minor,
318                         (uint8_t const *)&roccat_report);
319
320         mutex_unlock(&kovaplus->kovaplus_lock);
321
322         return size;
323 }
324 static DEVICE_ATTR(actual_profile, 0660,
325                    kovaplus_sysfs_show_actual_profile,
326                    kovaplus_sysfs_set_actual_profile);
327
328 static ssize_t kovaplus_sysfs_show_actual_cpi(struct device *dev,
329                 struct device_attribute *attr, char *buf)
330 {
331         struct kovaplus_device *kovaplus =
332                         hid_get_drvdata(dev_get_drvdata(dev->parent->parent));
333         return snprintf(buf, PAGE_SIZE, "%d\n", kovaplus->actual_cpi);
334 }
335 static DEVICE_ATTR(actual_cpi, 0440, kovaplus_sysfs_show_actual_cpi, NULL);
336
337 static ssize_t kovaplus_sysfs_show_actual_sensitivity_x(struct device *dev,
338                 struct device_attribute *attr, char *buf)
339 {
340         struct kovaplus_device *kovaplus =
341                         hid_get_drvdata(dev_get_drvdata(dev->parent->parent));
342         return snprintf(buf, PAGE_SIZE, "%d\n", kovaplus->actual_x_sensitivity);
343 }
344 static DEVICE_ATTR(actual_sensitivity_x, 0440,
345                    kovaplus_sysfs_show_actual_sensitivity_x, NULL);
346
347 static ssize_t kovaplus_sysfs_show_actual_sensitivity_y(struct device *dev,
348                 struct device_attribute *attr, char *buf)
349 {
350         struct kovaplus_device *kovaplus =
351                         hid_get_drvdata(dev_get_drvdata(dev->parent->parent));
352         return snprintf(buf, PAGE_SIZE, "%d\n", kovaplus->actual_y_sensitivity);
353 }
354 static DEVICE_ATTR(actual_sensitivity_y, 0440,
355                    kovaplus_sysfs_show_actual_sensitivity_y, NULL);
356
357 static ssize_t kovaplus_sysfs_show_firmware_version(struct device *dev,
358                 struct device_attribute *attr, char *buf)
359 {
360         struct kovaplus_device *kovaplus;
361         struct usb_device *usb_dev;
362         struct kovaplus_info info;
363
364         dev = dev->parent->parent;
365         kovaplus = hid_get_drvdata(dev_get_drvdata(dev));
366         usb_dev = interface_to_usbdev(to_usb_interface(dev));
367
368         mutex_lock(&kovaplus->kovaplus_lock);
369         roccat_common2_receive(usb_dev, KOVAPLUS_COMMAND_INFO,
370                         &info, KOVAPLUS_SIZE_INFO);
371         mutex_unlock(&kovaplus->kovaplus_lock);
372
373         return snprintf(buf, PAGE_SIZE, "%d\n", info.firmware_version);
374 }
375 static DEVICE_ATTR(firmware_version, 0440,
376                    kovaplus_sysfs_show_firmware_version, NULL);
377
378 static struct attribute *kovaplus_attrs[] = {
379         &dev_attr_actual_cpi.attr,
380         &dev_attr_firmware_version.attr,
381         &dev_attr_actual_profile.attr,
382         &dev_attr_actual_sensitivity_x.attr,
383         &dev_attr_actual_sensitivity_y.attr,
384         NULL,
385 };
386
387 static struct bin_attribute *kovaplus_bin_attributes[] = {
388         &bin_attr_control,
389         &bin_attr_info,
390         &bin_attr_profile_settings,
391         &bin_attr_profile_buttons,
392         &bin_attr_profile1_settings,
393         &bin_attr_profile2_settings,
394         &bin_attr_profile3_settings,
395         &bin_attr_profile4_settings,
396         &bin_attr_profile5_settings,
397         &bin_attr_profile1_buttons,
398         &bin_attr_profile2_buttons,
399         &bin_attr_profile3_buttons,
400         &bin_attr_profile4_buttons,
401         &bin_attr_profile5_buttons,
402         NULL,
403 };
404
405 static const struct attribute_group kovaplus_group = {
406         .attrs = kovaplus_attrs,
407         .bin_attrs = kovaplus_bin_attributes,
408 };
409
410 static const struct attribute_group *kovaplus_groups[] = {
411         &kovaplus_group,
412         NULL,
413 };
414
415 static int kovaplus_init_kovaplus_device_struct(struct usb_device *usb_dev,
416                 struct kovaplus_device *kovaplus)
417 {
418         int retval, i;
419         static uint wait = 70; /* device will freeze with just 60 */
420
421         mutex_init(&kovaplus->kovaplus_lock);
422
423         for (i = 0; i < 5; ++i) {
424                 msleep(wait);
425                 retval = kovaplus_get_profile_settings(usb_dev,
426                                 &kovaplus->profile_settings[i], i);
427                 if (retval)
428                         return retval;
429
430                 msleep(wait);
431                 retval = kovaplus_get_profile_buttons(usb_dev,
432                                 &kovaplus->profile_buttons[i], i);
433                 if (retval)
434                         return retval;
435         }
436
437         msleep(wait);
438         retval = kovaplus_get_actual_profile(usb_dev);
439         if (retval < 0)
440                 return retval;
441         kovaplus_profile_activated(kovaplus, retval);
442
443         return 0;
444 }
445
446 static int kovaplus_init_specials(struct hid_device *hdev)
447 {
448         struct usb_interface *intf = to_usb_interface(hdev->dev.parent);
449         struct usb_device *usb_dev = interface_to_usbdev(intf);
450         struct kovaplus_device *kovaplus;
451         int retval;
452
453         if (intf->cur_altsetting->desc.bInterfaceProtocol
454                         == USB_INTERFACE_PROTOCOL_MOUSE) {
455
456                 kovaplus = kzalloc(sizeof(*kovaplus), GFP_KERNEL);
457                 if (!kovaplus) {
458                         hid_err(hdev, "can't alloc device descriptor\n");
459                         return -ENOMEM;
460                 }
461                 hid_set_drvdata(hdev, kovaplus);
462
463                 retval = kovaplus_init_kovaplus_device_struct(usb_dev, kovaplus);
464                 if (retval) {
465                         hid_err(hdev, "couldn't init struct kovaplus_device\n");
466                         goto exit_free;
467                 }
468
469                 retval = roccat_connect(kovaplus_class, hdev,
470                                 sizeof(struct kovaplus_roccat_report));
471                 if (retval < 0) {
472                         hid_err(hdev, "couldn't init char dev\n");
473                 } else {
474                         kovaplus->chrdev_minor = retval;
475                         kovaplus->roccat_claimed = 1;
476                 }
477
478         } else {
479                 hid_set_drvdata(hdev, NULL);
480         }
481
482         return 0;
483 exit_free:
484         kfree(kovaplus);
485         return retval;
486 }
487
488 static void kovaplus_remove_specials(struct hid_device *hdev)
489 {
490         struct usb_interface *intf = to_usb_interface(hdev->dev.parent);
491         struct kovaplus_device *kovaplus;
492
493         if (intf->cur_altsetting->desc.bInterfaceProtocol
494                         == USB_INTERFACE_PROTOCOL_MOUSE) {
495                 kovaplus = hid_get_drvdata(hdev);
496                 if (kovaplus->roccat_claimed)
497                         roccat_disconnect(kovaplus->chrdev_minor);
498                 kfree(kovaplus);
499         }
500 }
501
502 static int kovaplus_probe(struct hid_device *hdev,
503                 const struct hid_device_id *id)
504 {
505         int retval;
506
507         retval = hid_parse(hdev);
508         if (retval) {
509                 hid_err(hdev, "parse failed\n");
510                 goto exit;
511         }
512
513         retval = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
514         if (retval) {
515                 hid_err(hdev, "hw start failed\n");
516                 goto exit;
517         }
518
519         retval = kovaplus_init_specials(hdev);
520         if (retval) {
521                 hid_err(hdev, "couldn't install mouse\n");
522                 goto exit_stop;
523         }
524
525         return 0;
526
527 exit_stop:
528         hid_hw_stop(hdev);
529 exit:
530         return retval;
531 }
532
533 static void kovaplus_remove(struct hid_device *hdev)
534 {
535         kovaplus_remove_specials(hdev);
536         hid_hw_stop(hdev);
537 }
538
539 static void kovaplus_keep_values_up_to_date(struct kovaplus_device *kovaplus,
540                 u8 const *data)
541 {
542         struct kovaplus_mouse_report_button const *button_report;
543
544         if (data[0] != KOVAPLUS_MOUSE_REPORT_NUMBER_BUTTON)
545                 return;
546
547         button_report = (struct kovaplus_mouse_report_button const *)data;
548
549         switch (button_report->type) {
550         case KOVAPLUS_MOUSE_REPORT_BUTTON_TYPE_PROFILE_1:
551                 kovaplus_profile_activated(kovaplus, button_report->data1 - 1);
552                 break;
553         case KOVAPLUS_MOUSE_REPORT_BUTTON_TYPE_CPI:
554                 kovaplus->actual_cpi = kovaplus_convert_event_cpi(button_report->data1);
555                 break;
556         case KOVAPLUS_MOUSE_REPORT_BUTTON_TYPE_SENSITIVITY:
557                 kovaplus->actual_x_sensitivity = button_report->data1;
558                 kovaplus->actual_y_sensitivity = button_report->data2;
559                 break;
560         default:
561                 break;
562         }
563 }
564
565 static void kovaplus_report_to_chrdev(struct kovaplus_device const *kovaplus,
566                 u8 const *data)
567 {
568         struct kovaplus_roccat_report roccat_report;
569         struct kovaplus_mouse_report_button const *button_report;
570
571         if (data[0] != KOVAPLUS_MOUSE_REPORT_NUMBER_BUTTON)
572                 return;
573
574         button_report = (struct kovaplus_mouse_report_button const *)data;
575
576         if (button_report->type == KOVAPLUS_MOUSE_REPORT_BUTTON_TYPE_PROFILE_2)
577                 return;
578
579         roccat_report.type = button_report->type;
580         roccat_report.profile = kovaplus->actual_profile + 1;
581
582         if (roccat_report.type == KOVAPLUS_MOUSE_REPORT_BUTTON_TYPE_MACRO ||
583                         roccat_report.type == KOVAPLUS_MOUSE_REPORT_BUTTON_TYPE_SHORTCUT ||
584                         roccat_report.type == KOVAPLUS_MOUSE_REPORT_BUTTON_TYPE_QUICKLAUNCH ||
585                         roccat_report.type == KOVAPLUS_MOUSE_REPORT_BUTTON_TYPE_TIMER)
586                 roccat_report.button = button_report->data1;
587         else
588                 roccat_report.button = 0;
589
590         if (roccat_report.type == KOVAPLUS_MOUSE_REPORT_BUTTON_TYPE_CPI)
591                 roccat_report.data1 = kovaplus_convert_event_cpi(button_report->data1);
592         else
593                 roccat_report.data1 = button_report->data1;
594
595         roccat_report.data2 = button_report->data2;
596
597         roccat_report_event(kovaplus->chrdev_minor,
598                         (uint8_t const *)&roccat_report);
599 }
600
601 static int kovaplus_raw_event(struct hid_device *hdev,
602                 struct hid_report *report, u8 *data, int size)
603 {
604         struct usb_interface *intf = to_usb_interface(hdev->dev.parent);
605         struct kovaplus_device *kovaplus = hid_get_drvdata(hdev);
606
607         if (intf->cur_altsetting->desc.bInterfaceProtocol
608                         != USB_INTERFACE_PROTOCOL_MOUSE)
609                 return 0;
610
611         if (kovaplus == NULL)
612                 return 0;
613
614         kovaplus_keep_values_up_to_date(kovaplus, data);
615
616         if (kovaplus->roccat_claimed)
617                 kovaplus_report_to_chrdev(kovaplus, data);
618
619         return 0;
620 }
621
622 static const struct hid_device_id kovaplus_devices[] = {
623         { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_KOVAPLUS) },
624         { }
625 };
626
627 MODULE_DEVICE_TABLE(hid, kovaplus_devices);
628
629 static struct hid_driver kovaplus_driver = {
630                 .name = "kovaplus",
631                 .id_table = kovaplus_devices,
632                 .probe = kovaplus_probe,
633                 .remove = kovaplus_remove,
634                 .raw_event = kovaplus_raw_event
635 };
636
637 static int __init kovaplus_init(void)
638 {
639         int retval;
640
641         kovaplus_class = class_create(THIS_MODULE, "kovaplus");
642         if (IS_ERR(kovaplus_class))
643                 return PTR_ERR(kovaplus_class);
644         kovaplus_class->dev_groups = kovaplus_groups;
645
646         retval = hid_register_driver(&kovaplus_driver);
647         if (retval)
648                 class_destroy(kovaplus_class);
649         return retval;
650 }
651
652 static void __exit kovaplus_exit(void)
653 {
654         hid_unregister_driver(&kovaplus_driver);
655         class_destroy(kovaplus_class);
656 }
657
658 module_init(kovaplus_init);
659 module_exit(kovaplus_exit);
660
661 MODULE_AUTHOR("Stefan Achatz");
662 MODULE_DESCRIPTION("USB Roccat Kova[+] driver");
663 MODULE_LICENSE("GPL v2");