43617fb28b87f68acb331d97f2f83fe599906bbe
[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         kovaplus->actual_profile = new_profile_index;
41         kovaplus->actual_cpi = kovaplus->profile_settings[new_profile_index].cpi_startup_level;
42         kovaplus->actual_x_sensitivity = kovaplus->profile_settings[new_profile_index].sensitivity_x;
43         kovaplus->actual_y_sensitivity = kovaplus->profile_settings[new_profile_index].sensitivity_y;
44 }
45
46 static int kovaplus_send_control(struct usb_device *usb_dev, uint value,
47                 enum kovaplus_control_requests request)
48 {
49         int retval;
50         struct roccat_common2_control control;
51
52         if ((request == KOVAPLUS_CONTROL_REQUEST_PROFILE_SETTINGS ||
53                         request == KOVAPLUS_CONTROL_REQUEST_PROFILE_BUTTONS) &&
54                         value > 4)
55                 return -EINVAL;
56
57         control.command = ROCCAT_COMMON_COMMAND_CONTROL;
58         control.value = value;
59         control.request = request;
60
61         retval = roccat_common2_send(usb_dev, ROCCAT_COMMON_COMMAND_CONTROL,
62                         &control, sizeof(struct roccat_common2_control));
63
64         return retval;
65 }
66
67 static int kovaplus_select_profile(struct usb_device *usb_dev, uint number,
68                 enum kovaplus_control_requests request)
69 {
70         return kovaplus_send_control(usb_dev, number, request);
71 }
72
73 static int kovaplus_get_profile_settings(struct usb_device *usb_dev,
74                 struct kovaplus_profile_settings *buf, uint number)
75 {
76         int retval;
77
78         retval = kovaplus_select_profile(usb_dev, number,
79                         KOVAPLUS_CONTROL_REQUEST_PROFILE_SETTINGS);
80         if (retval)
81                 return retval;
82
83         return roccat_common2_receive(usb_dev, KOVAPLUS_COMMAND_PROFILE_SETTINGS,
84                         buf, KOVAPLUS_SIZE_PROFILE_SETTINGS);
85 }
86
87 static int kovaplus_get_profile_buttons(struct usb_device *usb_dev,
88                 struct kovaplus_profile_buttons *buf, int number)
89 {
90         int retval;
91
92         retval = kovaplus_select_profile(usb_dev, number,
93                         KOVAPLUS_CONTROL_REQUEST_PROFILE_BUTTONS);
94         if (retval)
95                 return retval;
96
97         return roccat_common2_receive(usb_dev, KOVAPLUS_COMMAND_PROFILE_BUTTONS,
98                         buf, KOVAPLUS_SIZE_PROFILE_BUTTONS);
99 }
100
101 /* retval is 0-4 on success, < 0 on error */
102 static int kovaplus_get_actual_profile(struct usb_device *usb_dev)
103 {
104         struct kovaplus_actual_profile buf;
105         int retval;
106
107         retval = roccat_common2_receive(usb_dev, KOVAPLUS_COMMAND_ACTUAL_PROFILE,
108                         &buf, sizeof(struct kovaplus_actual_profile));
109
110         return retval ? retval : buf.actual_profile;
111 }
112
113 static int kovaplus_set_actual_profile(struct usb_device *usb_dev,
114                 int new_profile)
115 {
116         struct kovaplus_actual_profile buf;
117
118         buf.command = KOVAPLUS_COMMAND_ACTUAL_PROFILE;
119         buf.size = sizeof(struct kovaplus_actual_profile);
120         buf.actual_profile = new_profile;
121
122         return roccat_common2_send_with_status(usb_dev,
123                         KOVAPLUS_COMMAND_ACTUAL_PROFILE,
124                         &buf, sizeof(struct kovaplus_actual_profile));
125 }
126
127 static ssize_t kovaplus_sysfs_read(struct file *fp, struct kobject *kobj,
128                 char *buf, loff_t off, size_t count,
129                 size_t real_size, uint command)
130 {
131         struct device *dev = kobj_to_dev(kobj)->parent->parent;
132         struct kovaplus_device *kovaplus = hid_get_drvdata(dev_get_drvdata(dev));
133         struct usb_device *usb_dev = interface_to_usbdev(to_usb_interface(dev));
134         int retval;
135
136         if (off >= real_size)
137                 return 0;
138
139         if (off != 0 || count != real_size)
140                 return -EINVAL;
141
142         mutex_lock(&kovaplus->kovaplus_lock);
143         retval = roccat_common2_receive(usb_dev, command, buf, real_size);
144         mutex_unlock(&kovaplus->kovaplus_lock);
145
146         if (retval)
147                 return retval;
148
149         return real_size;
150 }
151
152 static ssize_t kovaplus_sysfs_write(struct file *fp, struct kobject *kobj,
153                 void const *buf, loff_t off, size_t count,
154                 size_t real_size, uint command)
155 {
156         struct device *dev = kobj_to_dev(kobj)->parent->parent;
157         struct kovaplus_device *kovaplus = hid_get_drvdata(dev_get_drvdata(dev));
158         struct usb_device *usb_dev = interface_to_usbdev(to_usb_interface(dev));
159         int retval;
160
161         if (off != 0 || count != real_size)
162                 return -EINVAL;
163
164         mutex_lock(&kovaplus->kovaplus_lock);
165         retval = roccat_common2_send_with_status(usb_dev, command,
166                         buf, real_size);
167         mutex_unlock(&kovaplus->kovaplus_lock);
168
169         if (retval)
170                 return retval;
171
172         return real_size;
173 }
174
175 #define KOVAPLUS_SYSFS_W(thingy, THINGY) \
176 static ssize_t kovaplus_sysfs_write_ ## thingy(struct file *fp, \
177                 struct kobject *kobj, struct bin_attribute *attr, char *buf, \
178                 loff_t off, size_t count) \
179 { \
180         return kovaplus_sysfs_write(fp, kobj, buf, off, count, \
181                         KOVAPLUS_SIZE_ ## THINGY, KOVAPLUS_COMMAND_ ## THINGY); \
182 }
183
184 #define KOVAPLUS_SYSFS_R(thingy, THINGY) \
185 static ssize_t kovaplus_sysfs_read_ ## thingy(struct file *fp, \
186                 struct kobject *kobj, struct bin_attribute *attr, char *buf, \
187                 loff_t off, size_t count) \
188 { \
189         return kovaplus_sysfs_read(fp, kobj, buf, off, count, \
190                         KOVAPLUS_SIZE_ ## THINGY, KOVAPLUS_COMMAND_ ## THINGY); \
191 }
192
193 #define KOVAPLUS_SYSFS_RW(thingy, THINGY) \
194 KOVAPLUS_SYSFS_W(thingy, THINGY) \
195 KOVAPLUS_SYSFS_R(thingy, THINGY)
196
197 #define KOVAPLUS_BIN_ATTRIBUTE_RW(thingy, THINGY) \
198 KOVAPLUS_SYSFS_RW(thingy, THINGY); \
199 static struct bin_attribute bin_attr_##thingy = { \
200         .attr = { .name = #thingy, .mode = 0660 }, \
201         .size = KOVAPLUS_SIZE_ ## THINGY, \
202         .read = kovaplus_sysfs_read_ ## thingy, \
203         .write = kovaplus_sysfs_write_ ## thingy \
204 }
205
206 #define KOVAPLUS_BIN_ATTRIBUTE_W(thingy, THINGY) \
207 KOVAPLUS_SYSFS_W(thingy, THINGY); \
208 static struct bin_attribute bin_attr_##thingy = { \
209         .attr = { .name = #thingy, .mode = 0220 }, \
210         .size = KOVAPLUS_SIZE_ ## THINGY, \
211         .write = kovaplus_sysfs_write_ ## thingy \
212 }
213 KOVAPLUS_BIN_ATTRIBUTE_W(control, CONTROL);
214 KOVAPLUS_BIN_ATTRIBUTE_RW(info, INFO);
215 KOVAPLUS_BIN_ATTRIBUTE_RW(profile_settings, PROFILE_SETTINGS);
216 KOVAPLUS_BIN_ATTRIBUTE_RW(profile_buttons, PROFILE_BUTTONS);
217
218 static ssize_t kovaplus_sysfs_read_profilex_settings(struct file *fp,
219                 struct kobject *kobj, struct bin_attribute *attr, char *buf,
220                 loff_t off, size_t count)
221 {
222         struct device *dev = kobj_to_dev(kobj)->parent->parent;
223         struct usb_device *usb_dev = interface_to_usbdev(to_usb_interface(dev));
224         ssize_t retval;
225
226         retval = kovaplus_select_profile(usb_dev, *(uint *)(attr->private),
227                         KOVAPLUS_CONTROL_REQUEST_PROFILE_SETTINGS);
228         if (retval)
229                 return retval;
230
231         return kovaplus_sysfs_read(fp, kobj, buf, off, count,
232                         KOVAPLUS_SIZE_PROFILE_SETTINGS,
233                         KOVAPLUS_COMMAND_PROFILE_SETTINGS);
234 }
235
236 static ssize_t kovaplus_sysfs_read_profilex_buttons(struct file *fp,
237                 struct kobject *kobj, struct bin_attribute *attr, char *buf,
238                 loff_t off, size_t count)
239 {
240         struct device *dev = kobj_to_dev(kobj)->parent->parent;
241         struct usb_device *usb_dev = interface_to_usbdev(to_usb_interface(dev));
242         ssize_t retval;
243
244         retval = kovaplus_select_profile(usb_dev, *(uint *)(attr->private),
245                         KOVAPLUS_CONTROL_REQUEST_PROFILE_BUTTONS);
246         if (retval)
247                 return retval;
248
249         return kovaplus_sysfs_read(fp, kobj, buf, off, count,
250                         KOVAPLUS_SIZE_PROFILE_BUTTONS,
251                         KOVAPLUS_COMMAND_PROFILE_BUTTONS);
252 }
253
254 #define PROFILE_ATTR(number)                                            \
255 static struct bin_attribute bin_attr_profile##number##_settings = {     \
256         .attr = { .name = "profile" #number "_settings", .mode = 0440 },        \
257         .size = KOVAPLUS_SIZE_PROFILE_SETTINGS,                         \
258         .read = kovaplus_sysfs_read_profilex_settings,                  \
259         .private = &profile_numbers[number-1],                          \
260 };                                                                      \
261 static struct bin_attribute bin_attr_profile##number##_buttons = {      \
262         .attr = { .name = "profile" #number "_buttons", .mode = 0440 }, \
263         .size = KOVAPLUS_SIZE_PROFILE_BUTTONS,                          \
264         .read = kovaplus_sysfs_read_profilex_buttons,                   \
265         .private = &profile_numbers[number-1],                          \
266 };
267 PROFILE_ATTR(1);
268 PROFILE_ATTR(2);
269 PROFILE_ATTR(3);
270 PROFILE_ATTR(4);
271 PROFILE_ATTR(5);
272
273 static ssize_t kovaplus_sysfs_show_actual_profile(struct device *dev,
274                 struct device_attribute *attr, char *buf)
275 {
276         struct kovaplus_device *kovaplus =
277                         hid_get_drvdata(dev_get_drvdata(dev->parent->parent));
278         return snprintf(buf, PAGE_SIZE, "%d\n", kovaplus->actual_profile);
279 }
280
281 static ssize_t kovaplus_sysfs_set_actual_profile(struct device *dev,
282                 struct device_attribute *attr, char const *buf, size_t size)
283 {
284         struct kovaplus_device *kovaplus;
285         struct usb_device *usb_dev;
286         unsigned long profile;
287         int retval;
288         struct kovaplus_roccat_report roccat_report;
289
290         dev = dev->parent->parent;
291         kovaplus = hid_get_drvdata(dev_get_drvdata(dev));
292         usb_dev = interface_to_usbdev(to_usb_interface(dev));
293
294         retval = kstrtoul(buf, 10, &profile);
295         if (retval)
296                 return retval;
297
298         if (profile >= 5)
299                 return -EINVAL;
300
301         mutex_lock(&kovaplus->kovaplus_lock);
302         retval = kovaplus_set_actual_profile(usb_dev, profile);
303         if (retval) {
304                 mutex_unlock(&kovaplus->kovaplus_lock);
305                 return retval;
306         }
307
308         kovaplus_profile_activated(kovaplus, profile);
309
310         roccat_report.type = KOVAPLUS_MOUSE_REPORT_BUTTON_TYPE_PROFILE_1;
311         roccat_report.profile = profile + 1;
312         roccat_report.button = 0;
313         roccat_report.data1 = profile + 1;
314         roccat_report.data2 = 0;
315         roccat_report_event(kovaplus->chrdev_minor,
316                         (uint8_t const *)&roccat_report);
317
318         mutex_unlock(&kovaplus->kovaplus_lock);
319
320         return size;
321 }
322 static DEVICE_ATTR(actual_profile, 0660,
323                    kovaplus_sysfs_show_actual_profile,
324                    kovaplus_sysfs_set_actual_profile);
325
326 static ssize_t kovaplus_sysfs_show_actual_cpi(struct device *dev,
327                 struct device_attribute *attr, char *buf)
328 {
329         struct kovaplus_device *kovaplus =
330                         hid_get_drvdata(dev_get_drvdata(dev->parent->parent));
331         return snprintf(buf, PAGE_SIZE, "%d\n", kovaplus->actual_cpi);
332 }
333 static DEVICE_ATTR(actual_cpi, 0440, kovaplus_sysfs_show_actual_cpi, NULL);
334
335 static ssize_t kovaplus_sysfs_show_actual_sensitivity_x(struct device *dev,
336                 struct device_attribute *attr, char *buf)
337 {
338         struct kovaplus_device *kovaplus =
339                         hid_get_drvdata(dev_get_drvdata(dev->parent->parent));
340         return snprintf(buf, PAGE_SIZE, "%d\n", kovaplus->actual_x_sensitivity);
341 }
342 static DEVICE_ATTR(actual_sensitivity_x, 0440,
343                    kovaplus_sysfs_show_actual_sensitivity_x, NULL);
344
345 static ssize_t kovaplus_sysfs_show_actual_sensitivity_y(struct device *dev,
346                 struct device_attribute *attr, char *buf)
347 {
348         struct kovaplus_device *kovaplus =
349                         hid_get_drvdata(dev_get_drvdata(dev->parent->parent));
350         return snprintf(buf, PAGE_SIZE, "%d\n", kovaplus->actual_y_sensitivity);
351 }
352 static DEVICE_ATTR(actual_sensitivity_y, 0440,
353                    kovaplus_sysfs_show_actual_sensitivity_y, NULL);
354
355 static ssize_t kovaplus_sysfs_show_firmware_version(struct device *dev,
356                 struct device_attribute *attr, char *buf)
357 {
358         struct kovaplus_device *kovaplus;
359         struct usb_device *usb_dev;
360         struct kovaplus_info info;
361
362         dev = dev->parent->parent;
363         kovaplus = hid_get_drvdata(dev_get_drvdata(dev));
364         usb_dev = interface_to_usbdev(to_usb_interface(dev));
365
366         mutex_lock(&kovaplus->kovaplus_lock);
367         roccat_common2_receive(usb_dev, KOVAPLUS_COMMAND_INFO,
368                         &info, KOVAPLUS_SIZE_INFO);
369         mutex_unlock(&kovaplus->kovaplus_lock);
370
371         return snprintf(buf, PAGE_SIZE, "%d\n", info.firmware_version);
372 }
373 static DEVICE_ATTR(firmware_version, 0440,
374                    kovaplus_sysfs_show_firmware_version, NULL);
375
376 static struct attribute *kovaplus_attrs[] = {
377         &dev_attr_actual_cpi.attr,
378         &dev_attr_firmware_version.attr,
379         &dev_attr_actual_profile.attr,
380         &dev_attr_actual_sensitivity_x.attr,
381         &dev_attr_actual_sensitivity_y.attr,
382         NULL,
383 };
384
385 static struct bin_attribute *kovaplus_bin_attributes[] = {
386         &bin_attr_control,
387         &bin_attr_info,
388         &bin_attr_profile_settings,
389         &bin_attr_profile_buttons,
390         &bin_attr_profile1_settings,
391         &bin_attr_profile2_settings,
392         &bin_attr_profile3_settings,
393         &bin_attr_profile4_settings,
394         &bin_attr_profile5_settings,
395         &bin_attr_profile1_buttons,
396         &bin_attr_profile2_buttons,
397         &bin_attr_profile3_buttons,
398         &bin_attr_profile4_buttons,
399         &bin_attr_profile5_buttons,
400         NULL,
401 };
402
403 static const struct attribute_group kovaplus_group = {
404         .attrs = kovaplus_attrs,
405         .bin_attrs = kovaplus_bin_attributes,
406 };
407
408 static const struct attribute_group *kovaplus_groups[] = {
409         &kovaplus_group,
410         NULL,
411 };
412
413 static int kovaplus_init_kovaplus_device_struct(struct usb_device *usb_dev,
414                 struct kovaplus_device *kovaplus)
415 {
416         int retval, i;
417         static uint wait = 70; /* device will freeze with just 60 */
418
419         mutex_init(&kovaplus->kovaplus_lock);
420
421         for (i = 0; i < 5; ++i) {
422                 msleep(wait);
423                 retval = kovaplus_get_profile_settings(usb_dev,
424                                 &kovaplus->profile_settings[i], i);
425                 if (retval)
426                         return retval;
427
428                 msleep(wait);
429                 retval = kovaplus_get_profile_buttons(usb_dev,
430                                 &kovaplus->profile_buttons[i], i);
431                 if (retval)
432                         return retval;
433         }
434
435         msleep(wait);
436         retval = kovaplus_get_actual_profile(usb_dev);
437         if (retval < 0)
438                 return retval;
439         kovaplus_profile_activated(kovaplus, retval);
440
441         return 0;
442 }
443
444 static int kovaplus_init_specials(struct hid_device *hdev)
445 {
446         struct usb_interface *intf = to_usb_interface(hdev->dev.parent);
447         struct usb_device *usb_dev = interface_to_usbdev(intf);
448         struct kovaplus_device *kovaplus;
449         int retval;
450
451         if (intf->cur_altsetting->desc.bInterfaceProtocol
452                         == USB_INTERFACE_PROTOCOL_MOUSE) {
453
454                 kovaplus = kzalloc(sizeof(*kovaplus), GFP_KERNEL);
455                 if (!kovaplus) {
456                         hid_err(hdev, "can't alloc device descriptor\n");
457                         return -ENOMEM;
458                 }
459                 hid_set_drvdata(hdev, kovaplus);
460
461                 retval = kovaplus_init_kovaplus_device_struct(usb_dev, kovaplus);
462                 if (retval) {
463                         hid_err(hdev, "couldn't init struct kovaplus_device\n");
464                         goto exit_free;
465                 }
466
467                 retval = roccat_connect(kovaplus_class, hdev,
468                                 sizeof(struct kovaplus_roccat_report));
469                 if (retval < 0) {
470                         hid_err(hdev, "couldn't init char dev\n");
471                 } else {
472                         kovaplus->chrdev_minor = retval;
473                         kovaplus->roccat_claimed = 1;
474                 }
475
476         } else {
477                 hid_set_drvdata(hdev, NULL);
478         }
479
480         return 0;
481 exit_free:
482         kfree(kovaplus);
483         return retval;
484 }
485
486 static void kovaplus_remove_specials(struct hid_device *hdev)
487 {
488         struct usb_interface *intf = to_usb_interface(hdev->dev.parent);
489         struct kovaplus_device *kovaplus;
490
491         if (intf->cur_altsetting->desc.bInterfaceProtocol
492                         == USB_INTERFACE_PROTOCOL_MOUSE) {
493                 kovaplus = hid_get_drvdata(hdev);
494                 if (kovaplus->roccat_claimed)
495                         roccat_disconnect(kovaplus->chrdev_minor);
496                 kfree(kovaplus);
497         }
498 }
499
500 static int kovaplus_probe(struct hid_device *hdev,
501                 const struct hid_device_id *id)
502 {
503         int retval;
504
505         retval = hid_parse(hdev);
506         if (retval) {
507                 hid_err(hdev, "parse failed\n");
508                 goto exit;
509         }
510
511         retval = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
512         if (retval) {
513                 hid_err(hdev, "hw start failed\n");
514                 goto exit;
515         }
516
517         retval = kovaplus_init_specials(hdev);
518         if (retval) {
519                 hid_err(hdev, "couldn't install mouse\n");
520                 goto exit_stop;
521         }
522
523         return 0;
524
525 exit_stop:
526         hid_hw_stop(hdev);
527 exit:
528         return retval;
529 }
530
531 static void kovaplus_remove(struct hid_device *hdev)
532 {
533         kovaplus_remove_specials(hdev);
534         hid_hw_stop(hdev);
535 }
536
537 static void kovaplus_keep_values_up_to_date(struct kovaplus_device *kovaplus,
538                 u8 const *data)
539 {
540         struct kovaplus_mouse_report_button const *button_report;
541
542         if (data[0] != KOVAPLUS_MOUSE_REPORT_NUMBER_BUTTON)
543                 return;
544
545         button_report = (struct kovaplus_mouse_report_button const *)data;
546
547         switch (button_report->type) {
548         case KOVAPLUS_MOUSE_REPORT_BUTTON_TYPE_PROFILE_1:
549                 kovaplus_profile_activated(kovaplus, button_report->data1 - 1);
550                 break;
551         case KOVAPLUS_MOUSE_REPORT_BUTTON_TYPE_CPI:
552                 kovaplus->actual_cpi = kovaplus_convert_event_cpi(button_report->data1);
553                 break;
554         case KOVAPLUS_MOUSE_REPORT_BUTTON_TYPE_SENSITIVITY:
555                 kovaplus->actual_x_sensitivity = button_report->data1;
556                 kovaplus->actual_y_sensitivity = button_report->data2;
557                 break;
558         default:
559                 break;
560         }
561 }
562
563 static void kovaplus_report_to_chrdev(struct kovaplus_device const *kovaplus,
564                 u8 const *data)
565 {
566         struct kovaplus_roccat_report roccat_report;
567         struct kovaplus_mouse_report_button const *button_report;
568
569         if (data[0] != KOVAPLUS_MOUSE_REPORT_NUMBER_BUTTON)
570                 return;
571
572         button_report = (struct kovaplus_mouse_report_button const *)data;
573
574         if (button_report->type == KOVAPLUS_MOUSE_REPORT_BUTTON_TYPE_PROFILE_2)
575                 return;
576
577         roccat_report.type = button_report->type;
578         roccat_report.profile = kovaplus->actual_profile + 1;
579
580         if (roccat_report.type == KOVAPLUS_MOUSE_REPORT_BUTTON_TYPE_MACRO ||
581                         roccat_report.type == KOVAPLUS_MOUSE_REPORT_BUTTON_TYPE_SHORTCUT ||
582                         roccat_report.type == KOVAPLUS_MOUSE_REPORT_BUTTON_TYPE_QUICKLAUNCH ||
583                         roccat_report.type == KOVAPLUS_MOUSE_REPORT_BUTTON_TYPE_TIMER)
584                 roccat_report.button = button_report->data1;
585         else
586                 roccat_report.button = 0;
587
588         if (roccat_report.type == KOVAPLUS_MOUSE_REPORT_BUTTON_TYPE_CPI)
589                 roccat_report.data1 = kovaplus_convert_event_cpi(button_report->data1);
590         else
591                 roccat_report.data1 = button_report->data1;
592
593         roccat_report.data2 = button_report->data2;
594
595         roccat_report_event(kovaplus->chrdev_minor,
596                         (uint8_t const *)&roccat_report);
597 }
598
599 static int kovaplus_raw_event(struct hid_device *hdev,
600                 struct hid_report *report, u8 *data, int size)
601 {
602         struct usb_interface *intf = to_usb_interface(hdev->dev.parent);
603         struct kovaplus_device *kovaplus = hid_get_drvdata(hdev);
604
605         if (intf->cur_altsetting->desc.bInterfaceProtocol
606                         != USB_INTERFACE_PROTOCOL_MOUSE)
607                 return 0;
608
609         if (kovaplus == NULL)
610                 return 0;
611
612         kovaplus_keep_values_up_to_date(kovaplus, data);
613
614         if (kovaplus->roccat_claimed)
615                 kovaplus_report_to_chrdev(kovaplus, data);
616
617         return 0;
618 }
619
620 static const struct hid_device_id kovaplus_devices[] = {
621         { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_KOVAPLUS) },
622         { }
623 };
624
625 MODULE_DEVICE_TABLE(hid, kovaplus_devices);
626
627 static struct hid_driver kovaplus_driver = {
628                 .name = "kovaplus",
629                 .id_table = kovaplus_devices,
630                 .probe = kovaplus_probe,
631                 .remove = kovaplus_remove,
632                 .raw_event = kovaplus_raw_event
633 };
634
635 static int __init kovaplus_init(void)
636 {
637         int retval;
638
639         kovaplus_class = class_create(THIS_MODULE, "kovaplus");
640         if (IS_ERR(kovaplus_class))
641                 return PTR_ERR(kovaplus_class);
642         kovaplus_class->dev_groups = kovaplus_groups;
643
644         retval = hid_register_driver(&kovaplus_driver);
645         if (retval)
646                 class_destroy(kovaplus_class);
647         return retval;
648 }
649
650 static void __exit kovaplus_exit(void)
651 {
652         hid_unregister_driver(&kovaplus_driver);
653         class_destroy(kovaplus_class);
654 }
655
656 module_init(kovaplus_init);
657 module_exit(kovaplus_exit);
658
659 MODULE_AUTHOR("Stefan Achatz");
660 MODULE_DESCRIPTION("USB Roccat Kova[+] driver");
661 MODULE_LICENSE("GPL v2");