1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3 * Roccat Pyra driver for Linux
4 *
5 * Copyright (c) 2010 Stefan Achatz <erazor_de@users.sourceforge.net>
6 */
7
8 /*
9 */
10
11 /*
12 * Roccat Pyra is a mobile gamer mouse which comes in wired and wireless
13 * variant. Wireless variant is not tested.
14 * Userland tools can be found at http://sourceforge.net/projects/roccat
15 */
16
17 #include <linux/device.h>
18 #include <linux/input.h>
19 #include <linux/hid.h>
20 #include <linux/module.h>
21 #include <linux/slab.h>
22 #include <linux/hid-roccat.h>
23 #include "hid-ids.h"
24 #include "hid-roccat-common.h"
25 #include "hid-roccat-pyra.h"
26
27 static uint profile_numbers[5] = {0, 1, 2, 3, 4};
28
29 /* pyra_class is used for creating sysfs attributes via roccat char device */
30 static struct class *pyra_class;
31
profile_activated(struct pyra_device * pyra,unsigned int new_profile)32 static void profile_activated(struct pyra_device *pyra,
33 unsigned int new_profile)
34 {
35 if (new_profile >= ARRAY_SIZE(pyra->profile_settings))
36 return;
37 pyra->actual_profile = new_profile;
38 pyra->actual_cpi = pyra->profile_settings[pyra->actual_profile].y_cpi;
39 }
40
pyra_send_control(struct usb_device * usb_dev,int value,enum pyra_control_requests request)41 static int pyra_send_control(struct usb_device *usb_dev, int value,
42 enum pyra_control_requests request)
43 {
44 struct roccat_common2_control control;
45
46 if ((request == PYRA_CONTROL_REQUEST_PROFILE_SETTINGS ||
47 request == PYRA_CONTROL_REQUEST_PROFILE_BUTTONS) &&
48 (value < 0 || value > 4))
49 return -EINVAL;
50
51 control.command = ROCCAT_COMMON_COMMAND_CONTROL;
52 control.value = value;
53 control.request = request;
54
55 return roccat_common2_send(usb_dev, ROCCAT_COMMON_COMMAND_CONTROL,
56 &control, sizeof(struct roccat_common2_control));
57 }
58
pyra_get_profile_settings(struct usb_device * usb_dev,struct pyra_profile_settings * buf,int number)59 static int pyra_get_profile_settings(struct usb_device *usb_dev,
60 struct pyra_profile_settings *buf, int number)
61 {
62 int retval;
63 retval = pyra_send_control(usb_dev, number,
64 PYRA_CONTROL_REQUEST_PROFILE_SETTINGS);
65 if (retval)
66 return retval;
67 return roccat_common2_receive(usb_dev, PYRA_COMMAND_PROFILE_SETTINGS,
68 buf, PYRA_SIZE_PROFILE_SETTINGS);
69 }
70
pyra_get_settings(struct usb_device * usb_dev,struct pyra_settings * buf)71 static int pyra_get_settings(struct usb_device *usb_dev,
72 struct pyra_settings *buf)
73 {
74 return roccat_common2_receive(usb_dev, PYRA_COMMAND_SETTINGS,
75 buf, PYRA_SIZE_SETTINGS);
76 }
77
pyra_set_settings(struct usb_device * usb_dev,struct pyra_settings const * settings)78 static int pyra_set_settings(struct usb_device *usb_dev,
79 struct pyra_settings const *settings)
80 {
81 return roccat_common2_send_with_status(usb_dev,
82 PYRA_COMMAND_SETTINGS, settings,
83 PYRA_SIZE_SETTINGS);
84 }
85
pyra_sysfs_read(struct file * fp,struct kobject * kobj,char * buf,loff_t off,size_t count,size_t real_size,uint command)86 static ssize_t pyra_sysfs_read(struct file *fp, struct kobject *kobj,
87 char *buf, loff_t off, size_t count,
88 size_t real_size, uint command)
89 {
90 struct device *dev = kobj_to_dev(kobj)->parent->parent;
91 struct pyra_device *pyra = hid_get_drvdata(dev_get_drvdata(dev));
92 struct usb_device *usb_dev = interface_to_usbdev(to_usb_interface(dev));
93 int retval;
94
95 if (off >= real_size)
96 return 0;
97
98 if (off != 0 || count != real_size)
99 return -EINVAL;
100
101 mutex_lock(&pyra->pyra_lock);
102 retval = roccat_common2_receive(usb_dev, command, buf, real_size);
103 mutex_unlock(&pyra->pyra_lock);
104
105 if (retval)
106 return retval;
107
108 return real_size;
109 }
110
pyra_sysfs_write(struct file * fp,struct kobject * kobj,void const * buf,loff_t off,size_t count,size_t real_size,uint command)111 static ssize_t pyra_sysfs_write(struct file *fp, struct kobject *kobj,
112 void const *buf, loff_t off, size_t count,
113 size_t real_size, uint command)
114 {
115 struct device *dev = kobj_to_dev(kobj)->parent->parent;
116 struct pyra_device *pyra = hid_get_drvdata(dev_get_drvdata(dev));
117 struct usb_device *usb_dev = interface_to_usbdev(to_usb_interface(dev));
118 int retval;
119
120 if (off != 0 || count != real_size)
121 return -EINVAL;
122
123 mutex_lock(&pyra->pyra_lock);
124 retval = roccat_common2_send_with_status(usb_dev, command, (void *)buf, real_size);
125 mutex_unlock(&pyra->pyra_lock);
126
127 if (retval)
128 return retval;
129
130 return real_size;
131 }
132
133 #define PYRA_SYSFS_W(thingy, THINGY) \
134 static ssize_t pyra_sysfs_write_ ## thingy(struct file *fp, \
135 struct kobject *kobj, struct bin_attribute *attr, char *buf, \
136 loff_t off, size_t count) \
137 { \
138 return pyra_sysfs_write(fp, kobj, buf, off, count, \
139 PYRA_SIZE_ ## THINGY, PYRA_COMMAND_ ## THINGY); \
140 }
141
142 #define PYRA_SYSFS_R(thingy, THINGY) \
143 static ssize_t pyra_sysfs_read_ ## thingy(struct file *fp, \
144 struct kobject *kobj, struct bin_attribute *attr, char *buf, \
145 loff_t off, size_t count) \
146 { \
147 return pyra_sysfs_read(fp, kobj, buf, off, count, \
148 PYRA_SIZE_ ## THINGY, PYRA_COMMAND_ ## THINGY); \
149 }
150
151 #define PYRA_SYSFS_RW(thingy, THINGY) \
152 PYRA_SYSFS_W(thingy, THINGY) \
153 PYRA_SYSFS_R(thingy, THINGY)
154
155 #define PYRA_BIN_ATTRIBUTE_RW(thingy, THINGY) \
156 PYRA_SYSFS_RW(thingy, THINGY); \
157 static struct bin_attribute bin_attr_##thingy = { \
158 .attr = { .name = #thingy, .mode = 0660 }, \
159 .size = PYRA_SIZE_ ## THINGY, \
160 .read = pyra_sysfs_read_ ## thingy, \
161 .write = pyra_sysfs_write_ ## thingy \
162 }
163
164 #define PYRA_BIN_ATTRIBUTE_R(thingy, THINGY) \
165 PYRA_SYSFS_R(thingy, THINGY); \
166 static struct bin_attribute bin_attr_##thingy = { \
167 .attr = { .name = #thingy, .mode = 0440 }, \
168 .size = PYRA_SIZE_ ## THINGY, \
169 .read = pyra_sysfs_read_ ## thingy, \
170 }
171
172 #define PYRA_BIN_ATTRIBUTE_W(thingy, THINGY) \
173 PYRA_SYSFS_W(thingy, THINGY); \
174 static struct bin_attribute bin_attr_##thingy = { \
175 .attr = { .name = #thingy, .mode = 0220 }, \
176 .size = PYRA_SIZE_ ## THINGY, \
177 .write = pyra_sysfs_write_ ## thingy \
178 }
179
180 PYRA_BIN_ATTRIBUTE_W(control, CONTROL);
181 PYRA_BIN_ATTRIBUTE_RW(info, INFO);
182 PYRA_BIN_ATTRIBUTE_RW(profile_settings, PROFILE_SETTINGS);
183 PYRA_BIN_ATTRIBUTE_RW(profile_buttons, PROFILE_BUTTONS);
184
pyra_sysfs_read_profilex_settings(struct file * fp,struct kobject * kobj,struct bin_attribute * attr,char * buf,loff_t off,size_t count)185 static ssize_t pyra_sysfs_read_profilex_settings(struct file *fp,
186 struct kobject *kobj, struct bin_attribute *attr, char *buf,
187 loff_t off, size_t count)
188 {
189 struct device *dev = kobj_to_dev(kobj)->parent->parent;
190 struct usb_device *usb_dev = interface_to_usbdev(to_usb_interface(dev));
191 ssize_t retval;
192
193 retval = pyra_send_control(usb_dev, *(uint *)(attr->private),
194 PYRA_CONTROL_REQUEST_PROFILE_SETTINGS);
195 if (retval)
196 return retval;
197
198 return pyra_sysfs_read(fp, kobj, buf, off, count,
199 PYRA_SIZE_PROFILE_SETTINGS,
200 PYRA_COMMAND_PROFILE_SETTINGS);
201 }
202
pyra_sysfs_read_profilex_buttons(struct file * fp,struct kobject * kobj,struct bin_attribute * attr,char * buf,loff_t off,size_t count)203 static ssize_t pyra_sysfs_read_profilex_buttons(struct file *fp,
204 struct kobject *kobj, struct bin_attribute *attr, char *buf,
205 loff_t off, size_t count)
206 {
207 struct device *dev = kobj_to_dev(kobj)->parent->parent;
208 struct usb_device *usb_dev = interface_to_usbdev(to_usb_interface(dev));
209 ssize_t retval;
210
211 retval = pyra_send_control(usb_dev, *(uint *)(attr->private),
212 PYRA_CONTROL_REQUEST_PROFILE_BUTTONS);
213 if (retval)
214 return retval;
215
216 return pyra_sysfs_read(fp, kobj, buf, off, count,
217 PYRA_SIZE_PROFILE_BUTTONS,
218 PYRA_COMMAND_PROFILE_BUTTONS);
219 }
220
221 #define PROFILE_ATTR(number) \
222 static struct bin_attribute bin_attr_profile##number##_settings = { \
223 .attr = { .name = "profile" #number "_settings", .mode = 0440 }, \
224 .size = PYRA_SIZE_PROFILE_SETTINGS, \
225 .read = pyra_sysfs_read_profilex_settings, \
226 .private = &profile_numbers[number-1], \
227 }; \
228 static struct bin_attribute bin_attr_profile##number##_buttons = { \
229 .attr = { .name = "profile" #number "_buttons", .mode = 0440 }, \
230 .size = PYRA_SIZE_PROFILE_BUTTONS, \
231 .read = pyra_sysfs_read_profilex_buttons, \
232 .private = &profile_numbers[number-1], \
233 };
234 PROFILE_ATTR(1);
235 PROFILE_ATTR(2);
236 PROFILE_ATTR(3);
237 PROFILE_ATTR(4);
238 PROFILE_ATTR(5);
239
pyra_sysfs_write_settings(struct file * fp,struct kobject * kobj,struct bin_attribute * attr,char * buf,loff_t off,size_t count)240 static ssize_t pyra_sysfs_write_settings(struct file *fp,
241 struct kobject *kobj, struct bin_attribute *attr, char *buf,
242 loff_t off, size_t count)
243 {
244 struct device *dev = kobj_to_dev(kobj)->parent->parent;
245 struct pyra_device *pyra = hid_get_drvdata(dev_get_drvdata(dev));
246 struct usb_device *usb_dev = interface_to_usbdev(to_usb_interface(dev));
247 int retval = 0;
248 struct pyra_roccat_report roccat_report;
249 struct pyra_settings const *settings;
250
251 if (off != 0 || count != PYRA_SIZE_SETTINGS)
252 return -EINVAL;
253
254 settings = (struct pyra_settings const *)buf;
255 if (settings->startup_profile >= ARRAY_SIZE(pyra->profile_settings))
256 return -EINVAL;
257
258 mutex_lock(&pyra->pyra_lock);
259
260 retval = pyra_set_settings(usb_dev, settings);
261 if (retval) {
262 mutex_unlock(&pyra->pyra_lock);
263 return retval;
264 }
265
266 profile_activated(pyra, settings->startup_profile);
267
268 roccat_report.type = PYRA_MOUSE_EVENT_BUTTON_TYPE_PROFILE_2;
269 roccat_report.value = settings->startup_profile + 1;
270 roccat_report.key = 0;
271 roccat_report_event(pyra->chrdev_minor,
272 (uint8_t const *)&roccat_report);
273
274 mutex_unlock(&pyra->pyra_lock);
275 return PYRA_SIZE_SETTINGS;
276 }
277
278 PYRA_SYSFS_R(settings, SETTINGS);
279 static struct bin_attribute bin_attr_settings =
280 __BIN_ATTR(settings, (S_IWUSR | S_IRUGO),
281 pyra_sysfs_read_settings, pyra_sysfs_write_settings,
282 PYRA_SIZE_SETTINGS);
283
pyra_sysfs_show_actual_cpi(struct device * dev,struct device_attribute * attr,char * buf)284 static ssize_t pyra_sysfs_show_actual_cpi(struct device *dev,
285 struct device_attribute *attr, char *buf)
286 {
287 struct pyra_device *pyra =
288 hid_get_drvdata(dev_get_drvdata(dev->parent->parent));
289 return snprintf(buf, PAGE_SIZE, "%d\n", pyra->actual_cpi);
290 }
291 static DEVICE_ATTR(actual_cpi, 0440, pyra_sysfs_show_actual_cpi, NULL);
292
pyra_sysfs_show_actual_profile(struct device * dev,struct device_attribute * attr,char * buf)293 static ssize_t pyra_sysfs_show_actual_profile(struct device *dev,
294 struct device_attribute *attr, char *buf)
295 {
296 struct pyra_device *pyra =
297 hid_get_drvdata(dev_get_drvdata(dev->parent->parent));
298 struct usb_device *usb_dev = interface_to_usbdev(to_usb_interface(dev));
299 struct pyra_settings settings;
300
301 mutex_lock(&pyra->pyra_lock);
302 roccat_common2_receive(usb_dev, PYRA_COMMAND_SETTINGS,
303 &settings, PYRA_SIZE_SETTINGS);
304 mutex_unlock(&pyra->pyra_lock);
305
306 return snprintf(buf, PAGE_SIZE, "%d\n", settings.startup_profile);
307 }
308 static DEVICE_ATTR(actual_profile, 0440, pyra_sysfs_show_actual_profile, NULL);
309 static DEVICE_ATTR(startup_profile, 0440, pyra_sysfs_show_actual_profile, NULL);
310
pyra_sysfs_show_firmware_version(struct device * dev,struct device_attribute * attr,char * buf)311 static ssize_t pyra_sysfs_show_firmware_version(struct device *dev,
312 struct device_attribute *attr, char *buf)
313 {
314 struct pyra_device *pyra;
315 struct usb_device *usb_dev;
316 struct pyra_info info;
317
318 dev = dev->parent->parent;
319 pyra = hid_get_drvdata(dev_get_drvdata(dev));
320 usb_dev = interface_to_usbdev(to_usb_interface(dev));
321
322 mutex_lock(&pyra->pyra_lock);
323 roccat_common2_receive(usb_dev, PYRA_COMMAND_INFO,
324 &info, PYRA_SIZE_INFO);
325 mutex_unlock(&pyra->pyra_lock);
326
327 return snprintf(buf, PAGE_SIZE, "%d\n", info.firmware_version);
328 }
329 static DEVICE_ATTR(firmware_version, 0440, pyra_sysfs_show_firmware_version,
330 NULL);
331
332 static struct attribute *pyra_attrs[] = {
333 &dev_attr_actual_cpi.attr,
334 &dev_attr_actual_profile.attr,
335 &dev_attr_firmware_version.attr,
336 &dev_attr_startup_profile.attr,
337 NULL,
338 };
339
340 static struct bin_attribute *pyra_bin_attributes[] = {
341 &bin_attr_control,
342 &bin_attr_info,
343 &bin_attr_profile_settings,
344 &bin_attr_profile_buttons,
345 &bin_attr_settings,
346 &bin_attr_profile1_settings,
347 &bin_attr_profile2_settings,
348 &bin_attr_profile3_settings,
349 &bin_attr_profile4_settings,
350 &bin_attr_profile5_settings,
351 &bin_attr_profile1_buttons,
352 &bin_attr_profile2_buttons,
353 &bin_attr_profile3_buttons,
354 &bin_attr_profile4_buttons,
355 &bin_attr_profile5_buttons,
356 NULL,
357 };
358
359 static const struct attribute_group pyra_group = {
360 .attrs = pyra_attrs,
361 .bin_attrs = pyra_bin_attributes,
362 };
363
364 static const struct attribute_group *pyra_groups[] = {
365 &pyra_group,
366 NULL,
367 };
368
pyra_init_pyra_device_struct(struct usb_device * usb_dev,struct pyra_device * pyra)369 static int pyra_init_pyra_device_struct(struct usb_device *usb_dev,
370 struct pyra_device *pyra)
371 {
372 struct pyra_settings settings;
373 int retval, i;
374
375 mutex_init(&pyra->pyra_lock);
376
377 retval = pyra_get_settings(usb_dev, &settings);
378 if (retval)
379 return retval;
380
381 for (i = 0; i < 5; ++i) {
382 retval = pyra_get_profile_settings(usb_dev,
383 &pyra->profile_settings[i], i);
384 if (retval)
385 return retval;
386 }
387
388 profile_activated(pyra, settings.startup_profile);
389
390 return 0;
391 }
392
pyra_init_specials(struct hid_device * hdev)393 static int pyra_init_specials(struct hid_device *hdev)
394 {
395 struct usb_interface *intf = to_usb_interface(hdev->dev.parent);
396 struct usb_device *usb_dev = interface_to_usbdev(intf);
397 struct pyra_device *pyra;
398 int retval;
399
400 if (intf->cur_altsetting->desc.bInterfaceProtocol
401 == USB_INTERFACE_PROTOCOL_MOUSE) {
402
403 pyra = kzalloc(sizeof(*pyra), GFP_KERNEL);
404 if (!pyra) {
405 hid_err(hdev, "can't alloc device descriptor\n");
406 return -ENOMEM;
407 }
408 hid_set_drvdata(hdev, pyra);
409
410 retval = pyra_init_pyra_device_struct(usb_dev, pyra);
411 if (retval) {
412 hid_err(hdev, "couldn't init struct pyra_device\n");
413 goto exit_free;
414 }
415
416 retval = roccat_connect(pyra_class, hdev,
417 sizeof(struct pyra_roccat_report));
418 if (retval < 0) {
419 hid_err(hdev, "couldn't init char dev\n");
420 } else {
421 pyra->chrdev_minor = retval;
422 pyra->roccat_claimed = 1;
423 }
424 } else {
425 hid_set_drvdata(hdev, NULL);
426 }
427
428 return 0;
429 exit_free:
430 kfree(pyra);
431 return retval;
432 }
433
pyra_remove_specials(struct hid_device * hdev)434 static void pyra_remove_specials(struct hid_device *hdev)
435 {
436 struct usb_interface *intf = to_usb_interface(hdev->dev.parent);
437 struct pyra_device *pyra;
438
439 if (intf->cur_altsetting->desc.bInterfaceProtocol
440 == USB_INTERFACE_PROTOCOL_MOUSE) {
441 pyra = hid_get_drvdata(hdev);
442 if (pyra->roccat_claimed)
443 roccat_disconnect(pyra->chrdev_minor);
444 kfree(hid_get_drvdata(hdev));
445 }
446 }
447
pyra_probe(struct hid_device * hdev,const struct hid_device_id * id)448 static int pyra_probe(struct hid_device *hdev, const struct hid_device_id *id)
449 {
450 int retval;
451
452 if (!hid_is_usb(hdev))
453 return -EINVAL;
454
455 retval = hid_parse(hdev);
456 if (retval) {
457 hid_err(hdev, "parse failed\n");
458 goto exit;
459 }
460
461 retval = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
462 if (retval) {
463 hid_err(hdev, "hw start failed\n");
464 goto exit;
465 }
466
467 retval = pyra_init_specials(hdev);
468 if (retval) {
469 hid_err(hdev, "couldn't install mouse\n");
470 goto exit_stop;
471 }
472 return 0;
473
474 exit_stop:
475 hid_hw_stop(hdev);
476 exit:
477 return retval;
478 }
479
pyra_remove(struct hid_device * hdev)480 static void pyra_remove(struct hid_device *hdev)
481 {
482 pyra_remove_specials(hdev);
483 hid_hw_stop(hdev);
484 }
485
pyra_keep_values_up_to_date(struct pyra_device * pyra,u8 const * data)486 static void pyra_keep_values_up_to_date(struct pyra_device *pyra,
487 u8 const *data)
488 {
489 struct pyra_mouse_event_button const *button_event;
490
491 switch (data[0]) {
492 case PYRA_MOUSE_REPORT_NUMBER_BUTTON:
493 button_event = (struct pyra_mouse_event_button const *)data;
494 switch (button_event->type) {
495 case PYRA_MOUSE_EVENT_BUTTON_TYPE_PROFILE_2:
496 profile_activated(pyra, button_event->data1 - 1);
497 break;
498 case PYRA_MOUSE_EVENT_BUTTON_TYPE_CPI:
499 pyra->actual_cpi = button_event->data1;
500 break;
501 }
502 break;
503 }
504 }
505
pyra_report_to_chrdev(struct pyra_device const * pyra,u8 const * data)506 static void pyra_report_to_chrdev(struct pyra_device const *pyra,
507 u8 const *data)
508 {
509 struct pyra_roccat_report roccat_report;
510 struct pyra_mouse_event_button const *button_event;
511
512 if (data[0] != PYRA_MOUSE_REPORT_NUMBER_BUTTON)
513 return;
514
515 button_event = (struct pyra_mouse_event_button const *)data;
516
517 switch (button_event->type) {
518 case PYRA_MOUSE_EVENT_BUTTON_TYPE_PROFILE_2:
519 case PYRA_MOUSE_EVENT_BUTTON_TYPE_CPI:
520 roccat_report.type = button_event->type;
521 roccat_report.value = button_event->data1;
522 roccat_report.key = 0;
523 roccat_report_event(pyra->chrdev_minor,
524 (uint8_t const *)&roccat_report);
525 break;
526 case PYRA_MOUSE_EVENT_BUTTON_TYPE_MACRO:
527 case PYRA_MOUSE_EVENT_BUTTON_TYPE_SHORTCUT:
528 case PYRA_MOUSE_EVENT_BUTTON_TYPE_QUICKLAUNCH:
529 if (button_event->data2 == PYRA_MOUSE_EVENT_BUTTON_PRESS) {
530 roccat_report.type = button_event->type;
531 roccat_report.key = button_event->data1;
532 /*
533 * pyra reports profile numbers with range 1-5.
534 * Keeping this behaviour.
535 */
536 roccat_report.value = pyra->actual_profile + 1;
537 roccat_report_event(pyra->chrdev_minor,
538 (uint8_t const *)&roccat_report);
539 }
540 break;
541 }
542 }
543
pyra_raw_event(struct hid_device * hdev,struct hid_report * report,u8 * data,int size)544 static int pyra_raw_event(struct hid_device *hdev, struct hid_report *report,
545 u8 *data, int size)
546 {
547 struct usb_interface *intf = to_usb_interface(hdev->dev.parent);
548 struct pyra_device *pyra = hid_get_drvdata(hdev);
549
550 if (intf->cur_altsetting->desc.bInterfaceProtocol
551 != USB_INTERFACE_PROTOCOL_MOUSE)
552 return 0;
553
554 if (pyra == NULL)
555 return 0;
556
557 pyra_keep_values_up_to_date(pyra, data);
558
559 if (pyra->roccat_claimed)
560 pyra_report_to_chrdev(pyra, data);
561
562 return 0;
563 }
564
565 static const struct hid_device_id pyra_devices[] = {
566 { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT,
567 USB_DEVICE_ID_ROCCAT_PYRA_WIRED) },
568 { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT,
569 USB_DEVICE_ID_ROCCAT_PYRA_WIRELESS) },
570 { }
571 };
572
573 MODULE_DEVICE_TABLE(hid, pyra_devices);
574
575 static struct hid_driver pyra_driver = {
576 .name = "pyra",
577 .id_table = pyra_devices,
578 .probe = pyra_probe,
579 .remove = pyra_remove,
580 .raw_event = pyra_raw_event
581 };
582
pyra_init(void)583 static int __init pyra_init(void)
584 {
585 int retval;
586
587 /* class name has to be same as driver name */
588 pyra_class = class_create(THIS_MODULE, "pyra");
589 if (IS_ERR(pyra_class))
590 return PTR_ERR(pyra_class);
591 pyra_class->dev_groups = pyra_groups;
592
593 retval = hid_register_driver(&pyra_driver);
594 if (retval)
595 class_destroy(pyra_class);
596 return retval;
597 }
598
pyra_exit(void)599 static void __exit pyra_exit(void)
600 {
601 hid_unregister_driver(&pyra_driver);
602 class_destroy(pyra_class);
603 }
604
605 module_init(pyra_init);
606 module_exit(pyra_exit);
607
608 MODULE_AUTHOR("Stefan Achatz");
609 MODULE_DESCRIPTION("USB Roccat Pyra driver");
610 MODULE_LICENSE("GPL v2");
611