1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3  * Roccat Kova[+] driver for Linux
4  *
5  * Copyright (c) 2011 Stefan Achatz <erazor_de@users.sourceforge.net>
6  */
7 
8 /*
9  */
10 
11 /*
12  * Roccat Kova[+] is a bigger version of the Pyra with two more side buttons.
13  */
14 
15 #include <linux/device.h>
16 #include <linux/input.h>
17 #include <linux/hid.h>
18 #include <linux/module.h>
19 #include <linux/slab.h>
20 #include <linux/hid-roccat.h>
21 #include "hid-ids.h"
22 #include "hid-roccat-common.h"
23 #include "hid-roccat-kovaplus.h"
24 
25 static uint profile_numbers[5] = {0, 1, 2, 3, 4};
26 
kovaplus_convert_event_cpi(uint value)27 static uint kovaplus_convert_event_cpi(uint value)
28 {
29 	return (value == 7 ? 4 : (value == 4 ? 3 : value));
30 }
31 
kovaplus_profile_activated(struct kovaplus_device * kovaplus,uint new_profile_index)32 static void kovaplus_profile_activated(struct kovaplus_device *kovaplus,
33 		uint new_profile_index)
34 {
35 	if (new_profile_index >= ARRAY_SIZE(kovaplus->profile_settings))
36 		return;
37 	kovaplus->actual_profile = new_profile_index;
38 	kovaplus->actual_cpi = kovaplus->profile_settings[new_profile_index].cpi_startup_level;
39 	kovaplus->actual_x_sensitivity = kovaplus->profile_settings[new_profile_index].sensitivity_x;
40 	kovaplus->actual_y_sensitivity = kovaplus->profile_settings[new_profile_index].sensitivity_y;
41 }
42 
kovaplus_send_control(struct usb_device * usb_dev,uint value,enum kovaplus_control_requests request)43 static int kovaplus_send_control(struct usb_device *usb_dev, uint value,
44 		enum kovaplus_control_requests request)
45 {
46 	int retval;
47 	struct roccat_common2_control control;
48 
49 	if ((request == KOVAPLUS_CONTROL_REQUEST_PROFILE_SETTINGS ||
50 			request == KOVAPLUS_CONTROL_REQUEST_PROFILE_BUTTONS) &&
51 			value > 4)
52 		return -EINVAL;
53 
54 	control.command = ROCCAT_COMMON_COMMAND_CONTROL;
55 	control.value = value;
56 	control.request = request;
57 
58 	retval = roccat_common2_send(usb_dev, ROCCAT_COMMON_COMMAND_CONTROL,
59 			&control, sizeof(struct roccat_common2_control));
60 
61 	return retval;
62 }
63 
kovaplus_select_profile(struct usb_device * usb_dev,uint number,enum kovaplus_control_requests request)64 static int kovaplus_select_profile(struct usb_device *usb_dev, uint number,
65 		enum kovaplus_control_requests request)
66 {
67 	return kovaplus_send_control(usb_dev, number, request);
68 }
69 
kovaplus_get_profile_settings(struct usb_device * usb_dev,struct kovaplus_profile_settings * buf,uint number)70 static int kovaplus_get_profile_settings(struct usb_device *usb_dev,
71 		struct kovaplus_profile_settings *buf, uint number)
72 {
73 	int retval;
74 
75 	retval = kovaplus_select_profile(usb_dev, number,
76 			KOVAPLUS_CONTROL_REQUEST_PROFILE_SETTINGS);
77 	if (retval)
78 		return retval;
79 
80 	return roccat_common2_receive(usb_dev, KOVAPLUS_COMMAND_PROFILE_SETTINGS,
81 			buf, KOVAPLUS_SIZE_PROFILE_SETTINGS);
82 }
83 
kovaplus_get_profile_buttons(struct usb_device * usb_dev,struct kovaplus_profile_buttons * buf,int number)84 static int kovaplus_get_profile_buttons(struct usb_device *usb_dev,
85 		struct kovaplus_profile_buttons *buf, int number)
86 {
87 	int retval;
88 
89 	retval = kovaplus_select_profile(usb_dev, number,
90 			KOVAPLUS_CONTROL_REQUEST_PROFILE_BUTTONS);
91 	if (retval)
92 		return retval;
93 
94 	return roccat_common2_receive(usb_dev, KOVAPLUS_COMMAND_PROFILE_BUTTONS,
95 			buf, KOVAPLUS_SIZE_PROFILE_BUTTONS);
96 }
97 
98 /* retval is 0-4 on success, < 0 on error */
kovaplus_get_actual_profile(struct usb_device * usb_dev)99 static int kovaplus_get_actual_profile(struct usb_device *usb_dev)
100 {
101 	struct kovaplus_actual_profile buf;
102 	int retval;
103 
104 	retval = roccat_common2_receive(usb_dev, KOVAPLUS_COMMAND_ACTUAL_PROFILE,
105 			&buf, sizeof(struct kovaplus_actual_profile));
106 
107 	return retval ? retval : buf.actual_profile;
108 }
109 
kovaplus_set_actual_profile(struct usb_device * usb_dev,int new_profile)110 static int kovaplus_set_actual_profile(struct usb_device *usb_dev,
111 		int new_profile)
112 {
113 	struct kovaplus_actual_profile buf;
114 
115 	buf.command = KOVAPLUS_COMMAND_ACTUAL_PROFILE;
116 	buf.size = sizeof(struct kovaplus_actual_profile);
117 	buf.actual_profile = new_profile;
118 
119 	return roccat_common2_send_with_status(usb_dev,
120 			KOVAPLUS_COMMAND_ACTUAL_PROFILE,
121 			&buf, sizeof(struct kovaplus_actual_profile));
122 }
123 
kovaplus_sysfs_read(struct file * fp,struct kobject * kobj,char * buf,loff_t off,size_t count,size_t real_size,uint command)124 static ssize_t kovaplus_sysfs_read(struct file *fp, struct kobject *kobj,
125 		char *buf, loff_t off, size_t count,
126 		size_t real_size, uint command)
127 {
128 	struct device *dev = kobj_to_dev(kobj)->parent->parent;
129 	struct kovaplus_device *kovaplus = hid_get_drvdata(dev_get_drvdata(dev));
130 	struct usb_device *usb_dev = interface_to_usbdev(to_usb_interface(dev));
131 	int retval;
132 
133 	if (off >= real_size)
134 		return 0;
135 
136 	if (off != 0 || count != real_size)
137 		return -EINVAL;
138 
139 	mutex_lock(&kovaplus->kovaplus_lock);
140 	retval = roccat_common2_receive(usb_dev, command, buf, real_size);
141 	mutex_unlock(&kovaplus->kovaplus_lock);
142 
143 	if (retval)
144 		return retval;
145 
146 	return real_size;
147 }
148 
kovaplus_sysfs_write(struct file * fp,struct kobject * kobj,void const * buf,loff_t off,size_t count,size_t real_size,uint command)149 static ssize_t kovaplus_sysfs_write(struct file *fp, struct kobject *kobj,
150 		void const *buf, loff_t off, size_t count,
151 		size_t real_size, uint command)
152 {
153 	struct device *dev = kobj_to_dev(kobj)->parent->parent;
154 	struct kovaplus_device *kovaplus = hid_get_drvdata(dev_get_drvdata(dev));
155 	struct usb_device *usb_dev = interface_to_usbdev(to_usb_interface(dev));
156 	int retval;
157 
158 	if (off != 0 || count != real_size)
159 		return -EINVAL;
160 
161 	mutex_lock(&kovaplus->kovaplus_lock);
162 	retval = roccat_common2_send_with_status(usb_dev, command,
163 			buf, real_size);
164 	mutex_unlock(&kovaplus->kovaplus_lock);
165 
166 	if (retval)
167 		return retval;
168 
169 	return real_size;
170 }
171 
172 #define KOVAPLUS_SYSFS_W(thingy, THINGY) \
173 static ssize_t kovaplus_sysfs_write_ ## thingy(struct file *fp, \
174 		struct kobject *kobj, struct bin_attribute *attr, char *buf, \
175 		loff_t off, size_t count) \
176 { \
177 	return kovaplus_sysfs_write(fp, kobj, buf, off, count, \
178 			KOVAPLUS_SIZE_ ## THINGY, KOVAPLUS_COMMAND_ ## THINGY); \
179 }
180 
181 #define KOVAPLUS_SYSFS_R(thingy, THINGY) \
182 static ssize_t kovaplus_sysfs_read_ ## thingy(struct file *fp, \
183 		struct kobject *kobj, struct bin_attribute *attr, char *buf, \
184 		loff_t off, size_t count) \
185 { \
186 	return kovaplus_sysfs_read(fp, kobj, buf, off, count, \
187 			KOVAPLUS_SIZE_ ## THINGY, KOVAPLUS_COMMAND_ ## THINGY); \
188 }
189 
190 #define KOVAPLUS_SYSFS_RW(thingy, THINGY) \
191 KOVAPLUS_SYSFS_W(thingy, THINGY) \
192 KOVAPLUS_SYSFS_R(thingy, THINGY)
193 
194 #define KOVAPLUS_BIN_ATTRIBUTE_RW(thingy, THINGY) \
195 KOVAPLUS_SYSFS_RW(thingy, THINGY); \
196 static struct bin_attribute bin_attr_##thingy = { \
197 	.attr = { .name = #thingy, .mode = 0660 }, \
198 	.size = KOVAPLUS_SIZE_ ## THINGY, \
199 	.read = kovaplus_sysfs_read_ ## thingy, \
200 	.write = kovaplus_sysfs_write_ ## thingy \
201 }
202 
203 #define KOVAPLUS_BIN_ATTRIBUTE_W(thingy, THINGY) \
204 KOVAPLUS_SYSFS_W(thingy, THINGY); \
205 static struct bin_attribute bin_attr_##thingy = { \
206 	.attr = { .name = #thingy, .mode = 0220 }, \
207 	.size = KOVAPLUS_SIZE_ ## THINGY, \
208 	.write = kovaplus_sysfs_write_ ## thingy \
209 }
210 KOVAPLUS_BIN_ATTRIBUTE_W(control, CONTROL);
211 KOVAPLUS_BIN_ATTRIBUTE_RW(info, INFO);
212 KOVAPLUS_BIN_ATTRIBUTE_RW(profile_settings, PROFILE_SETTINGS);
213 KOVAPLUS_BIN_ATTRIBUTE_RW(profile_buttons, PROFILE_BUTTONS);
214 
kovaplus_sysfs_read_profilex_settings(struct file * fp,struct kobject * kobj,struct bin_attribute * attr,char * buf,loff_t off,size_t count)215 static ssize_t kovaplus_sysfs_read_profilex_settings(struct file *fp,
216 		struct kobject *kobj, struct bin_attribute *attr, char *buf,
217 		loff_t off, size_t count)
218 {
219 	struct device *dev = kobj_to_dev(kobj)->parent->parent;
220 	struct usb_device *usb_dev = interface_to_usbdev(to_usb_interface(dev));
221 	ssize_t retval;
222 
223 	retval = kovaplus_select_profile(usb_dev, *(uint *)(attr->private),
224 			KOVAPLUS_CONTROL_REQUEST_PROFILE_SETTINGS);
225 	if (retval)
226 		return retval;
227 
228 	return kovaplus_sysfs_read(fp, kobj, buf, off, count,
229 			KOVAPLUS_SIZE_PROFILE_SETTINGS,
230 			KOVAPLUS_COMMAND_PROFILE_SETTINGS);
231 }
232 
kovaplus_sysfs_read_profilex_buttons(struct file * fp,struct kobject * kobj,struct bin_attribute * attr,char * buf,loff_t off,size_t count)233 static ssize_t kovaplus_sysfs_read_profilex_buttons(struct file *fp,
234 		struct kobject *kobj, struct bin_attribute *attr, char *buf,
235 		loff_t off, size_t count)
236 {
237 	struct device *dev = kobj_to_dev(kobj)->parent->parent;
238 	struct usb_device *usb_dev = interface_to_usbdev(to_usb_interface(dev));
239 	ssize_t retval;
240 
241 	retval = kovaplus_select_profile(usb_dev, *(uint *)(attr->private),
242 			KOVAPLUS_CONTROL_REQUEST_PROFILE_BUTTONS);
243 	if (retval)
244 		return retval;
245 
246 	return kovaplus_sysfs_read(fp, kobj, buf, off, count,
247 			KOVAPLUS_SIZE_PROFILE_BUTTONS,
248 			KOVAPLUS_COMMAND_PROFILE_BUTTONS);
249 }
250 
251 #define PROFILE_ATTR(number)						\
252 static struct bin_attribute bin_attr_profile##number##_settings = {	\
253 	.attr = { .name = "profile" #number "_settings", .mode = 0440 },	\
254 	.size = KOVAPLUS_SIZE_PROFILE_SETTINGS,				\
255 	.read = kovaplus_sysfs_read_profilex_settings,			\
256 	.private = &profile_numbers[number-1],				\
257 };									\
258 static struct bin_attribute bin_attr_profile##number##_buttons = {	\
259 	.attr = { .name = "profile" #number "_buttons", .mode = 0440 },	\
260 	.size = KOVAPLUS_SIZE_PROFILE_BUTTONS,				\
261 	.read = kovaplus_sysfs_read_profilex_buttons,			\
262 	.private = &profile_numbers[number-1],				\
263 };
264 PROFILE_ATTR(1);
265 PROFILE_ATTR(2);
266 PROFILE_ATTR(3);
267 PROFILE_ATTR(4);
268 PROFILE_ATTR(5);
269 
kovaplus_sysfs_show_actual_profile(struct device * dev,struct device_attribute * attr,char * buf)270 static ssize_t kovaplus_sysfs_show_actual_profile(struct device *dev,
271 		struct device_attribute *attr, char *buf)
272 {
273 	struct kovaplus_device *kovaplus =
274 			hid_get_drvdata(dev_get_drvdata(dev->parent->parent));
275 	return snprintf(buf, PAGE_SIZE, "%d\n", kovaplus->actual_profile);
276 }
277 
kovaplus_sysfs_set_actual_profile(struct device * dev,struct device_attribute * attr,char const * buf,size_t size)278 static ssize_t kovaplus_sysfs_set_actual_profile(struct device *dev,
279 		struct device_attribute *attr, char const *buf, size_t size)
280 {
281 	struct kovaplus_device *kovaplus;
282 	struct usb_device *usb_dev;
283 	unsigned long profile;
284 	int retval;
285 	struct kovaplus_roccat_report roccat_report;
286 
287 	dev = dev->parent->parent;
288 	kovaplus = hid_get_drvdata(dev_get_drvdata(dev));
289 	usb_dev = interface_to_usbdev(to_usb_interface(dev));
290 
291 	retval = kstrtoul(buf, 10, &profile);
292 	if (retval)
293 		return retval;
294 
295 	if (profile >= 5)
296 		return -EINVAL;
297 
298 	mutex_lock(&kovaplus->kovaplus_lock);
299 	retval = kovaplus_set_actual_profile(usb_dev, profile);
300 	if (retval) {
301 		mutex_unlock(&kovaplus->kovaplus_lock);
302 		return retval;
303 	}
304 
305 	kovaplus_profile_activated(kovaplus, profile);
306 
307 	roccat_report.type = KOVAPLUS_MOUSE_REPORT_BUTTON_TYPE_PROFILE_1;
308 	roccat_report.profile = profile + 1;
309 	roccat_report.button = 0;
310 	roccat_report.data1 = profile + 1;
311 	roccat_report.data2 = 0;
312 	roccat_report_event(kovaplus->chrdev_minor,
313 			(uint8_t const *)&roccat_report);
314 
315 	mutex_unlock(&kovaplus->kovaplus_lock);
316 
317 	return size;
318 }
319 static DEVICE_ATTR(actual_profile, 0660,
320 		   kovaplus_sysfs_show_actual_profile,
321 		   kovaplus_sysfs_set_actual_profile);
322 
kovaplus_sysfs_show_actual_cpi(struct device * dev,struct device_attribute * attr,char * buf)323 static ssize_t kovaplus_sysfs_show_actual_cpi(struct device *dev,
324 		struct device_attribute *attr, char *buf)
325 {
326 	struct kovaplus_device *kovaplus =
327 			hid_get_drvdata(dev_get_drvdata(dev->parent->parent));
328 	return snprintf(buf, PAGE_SIZE, "%d\n", kovaplus->actual_cpi);
329 }
330 static DEVICE_ATTR(actual_cpi, 0440, kovaplus_sysfs_show_actual_cpi, NULL);
331 
kovaplus_sysfs_show_actual_sensitivity_x(struct device * dev,struct device_attribute * attr,char * buf)332 static ssize_t kovaplus_sysfs_show_actual_sensitivity_x(struct device *dev,
333 		struct device_attribute *attr, char *buf)
334 {
335 	struct kovaplus_device *kovaplus =
336 			hid_get_drvdata(dev_get_drvdata(dev->parent->parent));
337 	return snprintf(buf, PAGE_SIZE, "%d\n", kovaplus->actual_x_sensitivity);
338 }
339 static DEVICE_ATTR(actual_sensitivity_x, 0440,
340 		   kovaplus_sysfs_show_actual_sensitivity_x, NULL);
341 
kovaplus_sysfs_show_actual_sensitivity_y(struct device * dev,struct device_attribute * attr,char * buf)342 static ssize_t kovaplus_sysfs_show_actual_sensitivity_y(struct device *dev,
343 		struct device_attribute *attr, char *buf)
344 {
345 	struct kovaplus_device *kovaplus =
346 			hid_get_drvdata(dev_get_drvdata(dev->parent->parent));
347 	return snprintf(buf, PAGE_SIZE, "%d\n", kovaplus->actual_y_sensitivity);
348 }
349 static DEVICE_ATTR(actual_sensitivity_y, 0440,
350 		   kovaplus_sysfs_show_actual_sensitivity_y, NULL);
351 
kovaplus_sysfs_show_firmware_version(struct device * dev,struct device_attribute * attr,char * buf)352 static ssize_t kovaplus_sysfs_show_firmware_version(struct device *dev,
353 		struct device_attribute *attr, char *buf)
354 {
355 	struct kovaplus_device *kovaplus;
356 	struct usb_device *usb_dev;
357 	struct kovaplus_info info;
358 
359 	dev = dev->parent->parent;
360 	kovaplus = hid_get_drvdata(dev_get_drvdata(dev));
361 	usb_dev = interface_to_usbdev(to_usb_interface(dev));
362 
363 	mutex_lock(&kovaplus->kovaplus_lock);
364 	roccat_common2_receive(usb_dev, KOVAPLUS_COMMAND_INFO,
365 			&info, KOVAPLUS_SIZE_INFO);
366 	mutex_unlock(&kovaplus->kovaplus_lock);
367 
368 	return snprintf(buf, PAGE_SIZE, "%d\n", info.firmware_version);
369 }
370 static DEVICE_ATTR(firmware_version, 0440,
371 		   kovaplus_sysfs_show_firmware_version, NULL);
372 
373 static struct attribute *kovaplus_attrs[] = {
374 	&dev_attr_actual_cpi.attr,
375 	&dev_attr_firmware_version.attr,
376 	&dev_attr_actual_profile.attr,
377 	&dev_attr_actual_sensitivity_x.attr,
378 	&dev_attr_actual_sensitivity_y.attr,
379 	NULL,
380 };
381 
382 static struct bin_attribute *kovaplus_bin_attributes[] = {
383 	&bin_attr_control,
384 	&bin_attr_info,
385 	&bin_attr_profile_settings,
386 	&bin_attr_profile_buttons,
387 	&bin_attr_profile1_settings,
388 	&bin_attr_profile2_settings,
389 	&bin_attr_profile3_settings,
390 	&bin_attr_profile4_settings,
391 	&bin_attr_profile5_settings,
392 	&bin_attr_profile1_buttons,
393 	&bin_attr_profile2_buttons,
394 	&bin_attr_profile3_buttons,
395 	&bin_attr_profile4_buttons,
396 	&bin_attr_profile5_buttons,
397 	NULL,
398 };
399 
400 static const struct attribute_group kovaplus_group = {
401 	.attrs = kovaplus_attrs,
402 	.bin_attrs = kovaplus_bin_attributes,
403 };
404 
405 static const struct attribute_group *kovaplus_groups[] = {
406 	&kovaplus_group,
407 	NULL,
408 };
409 
410 static const struct class kovaplus_class = {
411 	.name = "kovaplus",
412 	.dev_groups = kovaplus_groups,
413 };
414 
kovaplus_init_kovaplus_device_struct(struct usb_device * usb_dev,struct kovaplus_device * kovaplus)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 
kovaplus_init_specials(struct hid_device * hdev)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 
kovaplus_remove_specials(struct hid_device * hdev)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 
kovaplus_probe(struct hid_device * hdev,const struct hid_device_id * id)502 static int kovaplus_probe(struct hid_device *hdev,
503 		const struct hid_device_id *id)
504 {
505 	int retval;
506 
507 	if (!hid_is_usb(hdev))
508 		return -EINVAL;
509 
510 	retval = hid_parse(hdev);
511 	if (retval) {
512 		hid_err(hdev, "parse failed\n");
513 		goto exit;
514 	}
515 
516 	retval = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
517 	if (retval) {
518 		hid_err(hdev, "hw start failed\n");
519 		goto exit;
520 	}
521 
522 	retval = kovaplus_init_specials(hdev);
523 	if (retval) {
524 		hid_err(hdev, "couldn't install mouse\n");
525 		goto exit_stop;
526 	}
527 
528 	return 0;
529 
530 exit_stop:
531 	hid_hw_stop(hdev);
532 exit:
533 	return retval;
534 }
535 
kovaplus_remove(struct hid_device * hdev)536 static void kovaplus_remove(struct hid_device *hdev)
537 {
538 	kovaplus_remove_specials(hdev);
539 	hid_hw_stop(hdev);
540 }
541 
kovaplus_keep_values_up_to_date(struct kovaplus_device * kovaplus,u8 const * data)542 static void kovaplus_keep_values_up_to_date(struct kovaplus_device *kovaplus,
543 		u8 const *data)
544 {
545 	struct kovaplus_mouse_report_button const *button_report;
546 
547 	if (data[0] != KOVAPLUS_MOUSE_REPORT_NUMBER_BUTTON)
548 		return;
549 
550 	button_report = (struct kovaplus_mouse_report_button const *)data;
551 
552 	switch (button_report->type) {
553 	case KOVAPLUS_MOUSE_REPORT_BUTTON_TYPE_PROFILE_1:
554 		kovaplus_profile_activated(kovaplus, button_report->data1 - 1);
555 		break;
556 	case KOVAPLUS_MOUSE_REPORT_BUTTON_TYPE_CPI:
557 		kovaplus->actual_cpi = kovaplus_convert_event_cpi(button_report->data1);
558 		break;
559 	case KOVAPLUS_MOUSE_REPORT_BUTTON_TYPE_SENSITIVITY:
560 		kovaplus->actual_x_sensitivity = button_report->data1;
561 		kovaplus->actual_y_sensitivity = button_report->data2;
562 		break;
563 	default:
564 		break;
565 	}
566 }
567 
kovaplus_report_to_chrdev(struct kovaplus_device const * kovaplus,u8 const * data)568 static void kovaplus_report_to_chrdev(struct kovaplus_device const *kovaplus,
569 		u8 const *data)
570 {
571 	struct kovaplus_roccat_report roccat_report;
572 	struct kovaplus_mouse_report_button const *button_report;
573 
574 	if (data[0] != KOVAPLUS_MOUSE_REPORT_NUMBER_BUTTON)
575 		return;
576 
577 	button_report = (struct kovaplus_mouse_report_button const *)data;
578 
579 	if (button_report->type == KOVAPLUS_MOUSE_REPORT_BUTTON_TYPE_PROFILE_2)
580 		return;
581 
582 	roccat_report.type = button_report->type;
583 	roccat_report.profile = kovaplus->actual_profile + 1;
584 
585 	if (roccat_report.type == KOVAPLUS_MOUSE_REPORT_BUTTON_TYPE_MACRO ||
586 			roccat_report.type == KOVAPLUS_MOUSE_REPORT_BUTTON_TYPE_SHORTCUT ||
587 			roccat_report.type == KOVAPLUS_MOUSE_REPORT_BUTTON_TYPE_QUICKLAUNCH ||
588 			roccat_report.type == KOVAPLUS_MOUSE_REPORT_BUTTON_TYPE_TIMER)
589 		roccat_report.button = button_report->data1;
590 	else
591 		roccat_report.button = 0;
592 
593 	if (roccat_report.type == KOVAPLUS_MOUSE_REPORT_BUTTON_TYPE_CPI)
594 		roccat_report.data1 = kovaplus_convert_event_cpi(button_report->data1);
595 	else
596 		roccat_report.data1 = button_report->data1;
597 
598 	roccat_report.data2 = button_report->data2;
599 
600 	roccat_report_event(kovaplus->chrdev_minor,
601 			(uint8_t const *)&roccat_report);
602 }
603 
kovaplus_raw_event(struct hid_device * hdev,struct hid_report * report,u8 * data,int size)604 static int kovaplus_raw_event(struct hid_device *hdev,
605 		struct hid_report *report, u8 *data, int size)
606 {
607 	struct usb_interface *intf = to_usb_interface(hdev->dev.parent);
608 	struct kovaplus_device *kovaplus = hid_get_drvdata(hdev);
609 
610 	if (intf->cur_altsetting->desc.bInterfaceProtocol
611 			!= USB_INTERFACE_PROTOCOL_MOUSE)
612 		return 0;
613 
614 	if (kovaplus == NULL)
615 		return 0;
616 
617 	kovaplus_keep_values_up_to_date(kovaplus, data);
618 
619 	if (kovaplus->roccat_claimed)
620 		kovaplus_report_to_chrdev(kovaplus, data);
621 
622 	return 0;
623 }
624 
625 static const struct hid_device_id kovaplus_devices[] = {
626 	{ HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_KOVAPLUS) },
627 	{ }
628 };
629 
630 MODULE_DEVICE_TABLE(hid, kovaplus_devices);
631 
632 static struct hid_driver kovaplus_driver = {
633 		.name = "kovaplus",
634 		.id_table = kovaplus_devices,
635 		.probe = kovaplus_probe,
636 		.remove = kovaplus_remove,
637 		.raw_event = kovaplus_raw_event
638 };
639 
kovaplus_init(void)640 static int __init kovaplus_init(void)
641 {
642 	int retval;
643 
644 	retval = class_register(&kovaplus_class);
645 	if (retval)
646 		return retval;
647 
648 	retval = hid_register_driver(&kovaplus_driver);
649 	if (retval)
650 		class_unregister(&kovaplus_class);
651 	return retval;
652 }
653 
kovaplus_exit(void)654 static void __exit kovaplus_exit(void)
655 {
656 	hid_unregister_driver(&kovaplus_driver);
657 	class_unregister(&kovaplus_class);
658 }
659 
660 module_init(kovaplus_init);
661 module_exit(kovaplus_exit);
662 
663 MODULE_AUTHOR("Stefan Achatz");
664 MODULE_DESCRIPTION("USB Roccat Kova[+] driver");
665 MODULE_LICENSE("GPL v2");
666