1/*
2 * Roccat Kone[+] driver for Linux
3 *
4 * Copyright (c) 2010 Stefan Achatz <erazor_de@users.sourceforge.net>
5 */
6
7/*
8 * This program is free software; you can redistribute it and/or modify it
9 * under the terms of the GNU General Public License as published by the Free
10 * Software Foundation; either version 2 of the License, or (at your option)
11 * any later version.
12 */
13
14/*
15 * Roccat Kone[+] is an updated/improved version of the Kone with more memory
16 * and functionality and without the non-standard behaviours the Kone had.
17 */
18
19#include <linux/device.h>
20#include <linux/input.h>
21#include <linux/hid.h>
22#include <linux/module.h>
23#include <linux/slab.h>
24#include <linux/hid-roccat.h>
25#include "hid-ids.h"
26#include "hid-roccat-common.h"
27#include "hid-roccat-koneplus.h"
28
29static uint profile_numbers[5] = {0, 1, 2, 3, 4};
30
31static struct class *koneplus_class;
32
33static void koneplus_profile_activated(struct koneplus_device *koneplus,
34		uint new_profile)
35{
36	koneplus->actual_profile = new_profile;
37}
38
39static int koneplus_send_control(struct usb_device *usb_dev, uint value,
40		enum koneplus_control_requests request)
41{
42	struct koneplus_control control;
43
44	if ((request == KONEPLUS_CONTROL_REQUEST_PROFILE_SETTINGS ||
45			request == KONEPLUS_CONTROL_REQUEST_PROFILE_BUTTONS) &&
46			value > 4)
47		return -EINVAL;
48
49	control.command = KONEPLUS_COMMAND_CONTROL;
50	control.value = value;
51	control.request = request;
52
53	return roccat_common_send(usb_dev, KONEPLUS_COMMAND_CONTROL,
54			&control, sizeof(struct koneplus_control));
55}
56
57static int koneplus_receive_control_status(struct usb_device *usb_dev)
58{
59	int retval;
60	struct koneplus_control control;
61
62	do {
63		retval = roccat_common_receive(usb_dev, KONEPLUS_COMMAND_CONTROL,
64				&control, sizeof(struct koneplus_control));
65
66		/* check if we get a completely wrong answer */
67		if (retval)
68			return retval;
69
70		if (control.value == KONEPLUS_CONTROL_REQUEST_STATUS_OK)
71			return 0;
72
73		/* indicates that hardware needs some more time to complete action */
74		if (control.value == KONEPLUS_CONTROL_REQUEST_STATUS_WAIT) {
75			msleep(500); /* windows driver uses 1000 */
76			continue;
77		}
78
79		/* seems to be critical - replug necessary */
80		if (control.value == KONEPLUS_CONTROL_REQUEST_STATUS_OVERLOAD)
81			return -EINVAL;
82
83		hid_err(usb_dev, "koneplus_receive_control_status: "
84				"unknown response value 0x%x\n", control.value);
85		return -EINVAL;
86	} while (1);
87}
88
89static int koneplus_send(struct usb_device *usb_dev, uint command,
90		void const *buf, uint size)
91{
92	int retval;
93
94	retval = roccat_common_send(usb_dev, command, buf, size);
95	if (retval)
96		return retval;
97
98	return koneplus_receive_control_status(usb_dev);
99}
100
101static int koneplus_select_profile(struct usb_device *usb_dev, uint number,
102		enum koneplus_control_requests request)
103{
104	int retval;
105
106	retval = koneplus_send_control(usb_dev, number, request);
107	if (retval)
108		return retval;
109
110	/* allow time to settle things - windows driver uses 500 */
111	msleep(100);
112
113	retval = koneplus_receive_control_status(usb_dev);
114	if (retval)
115		return retval;
116
117	return 0;
118}
119
120static int koneplus_get_info(struct usb_device *usb_dev,
121		struct koneplus_info *buf)
122{
123	return roccat_common_receive(usb_dev, KONEPLUS_COMMAND_INFO,
124			buf, sizeof(struct koneplus_info));
125}
126
127static int koneplus_get_profile_settings(struct usb_device *usb_dev,
128		struct koneplus_profile_settings *buf, uint number)
129{
130	int retval;
131
132	retval = koneplus_select_profile(usb_dev, number,
133			KONEPLUS_CONTROL_REQUEST_PROFILE_SETTINGS);
134	if (retval)
135		return retval;
136
137	return roccat_common_receive(usb_dev, KONEPLUS_COMMAND_PROFILE_SETTINGS,
138			buf, sizeof(struct koneplus_profile_settings));
139}
140
141static int koneplus_set_profile_settings(struct usb_device *usb_dev,
142		struct koneplus_profile_settings const *settings)
143{
144	return koneplus_send(usb_dev, KONEPLUS_COMMAND_PROFILE_SETTINGS,
145			settings, sizeof(struct koneplus_profile_settings));
146}
147
148static int koneplus_get_profile_buttons(struct usb_device *usb_dev,
149		struct koneplus_profile_buttons *buf, int number)
150{
151	int retval;
152
153	retval = koneplus_select_profile(usb_dev, number,
154			KONEPLUS_CONTROL_REQUEST_PROFILE_BUTTONS);
155	if (retval)
156		return retval;
157
158	return roccat_common_receive(usb_dev, KONEPLUS_COMMAND_PROFILE_BUTTONS,
159			buf, sizeof(struct koneplus_profile_buttons));
160}
161
162static int koneplus_set_profile_buttons(struct usb_device *usb_dev,
163		struct koneplus_profile_buttons const *buttons)
164{
165	return koneplus_send(usb_dev, KONEPLUS_COMMAND_PROFILE_BUTTONS,
166			buttons, sizeof(struct koneplus_profile_buttons));
167}
168
169/* retval is 0-4 on success, < 0 on error */
170static int koneplus_get_actual_profile(struct usb_device *usb_dev)
171{
172	struct koneplus_actual_profile buf;
173	int retval;
174
175	retval = roccat_common_receive(usb_dev, KONEPLUS_COMMAND_ACTUAL_PROFILE,
176			&buf, sizeof(struct koneplus_actual_profile));
177
178	return retval ? retval : buf.actual_profile;
179}
180
181static int koneplus_set_actual_profile(struct usb_device *usb_dev,
182		int new_profile)
183{
184	struct koneplus_actual_profile buf;
185
186	buf.command = KONEPLUS_COMMAND_ACTUAL_PROFILE;
187	buf.size = sizeof(struct koneplus_actual_profile);
188	buf.actual_profile = new_profile;
189
190	return koneplus_send(usb_dev, KONEPLUS_COMMAND_ACTUAL_PROFILE,
191			&buf, sizeof(struct koneplus_actual_profile));
192}
193
194static ssize_t koneplus_sysfs_read(struct file *fp, struct kobject *kobj,
195		char *buf, loff_t off, size_t count,
196		size_t real_size, uint command)
197{
198	struct device *dev =
199			container_of(kobj, struct device, kobj)->parent->parent;
200	struct koneplus_device *koneplus = hid_get_drvdata(dev_get_drvdata(dev));
201	struct usb_device *usb_dev = interface_to_usbdev(to_usb_interface(dev));
202	int retval;
203
204	if (off >= real_size)
205		return 0;
206
207	if (off != 0 || count != real_size)
208		return -EINVAL;
209
210	mutex_lock(&koneplus->koneplus_lock);
211	retval = roccat_common_receive(usb_dev, command, buf, real_size);
212	mutex_unlock(&koneplus->koneplus_lock);
213
214	if (retval)
215		return retval;
216
217	return real_size;
218}
219
220static ssize_t koneplus_sysfs_write(struct file *fp, struct kobject *kobj,
221		void const *buf, loff_t off, size_t count,
222		size_t real_size, uint command)
223{
224	struct device *dev =
225			container_of(kobj, struct device, kobj)->parent->parent;
226	struct koneplus_device *koneplus = hid_get_drvdata(dev_get_drvdata(dev));
227	struct usb_device *usb_dev = interface_to_usbdev(to_usb_interface(dev));
228	int retval;
229
230	if (off != 0 || count != real_size)
231		return -EINVAL;
232
233	mutex_lock(&koneplus->koneplus_lock);
234	retval = koneplus_send(usb_dev, command, buf, real_size);
235	mutex_unlock(&koneplus->koneplus_lock);
236
237	if (retval)
238		return retval;
239
240	return real_size;
241}
242
243static ssize_t koneplus_sysfs_write_talk(struct file *fp,
244		struct kobject *kobj, struct bin_attribute *attr, char *buf,
245		loff_t off, size_t count)
246{
247	return koneplus_sysfs_write(fp, kobj, buf, off, count,
248			sizeof(struct koneplus_talk), KONEPLUS_COMMAND_TALK);
249}
250
251static ssize_t koneplus_sysfs_write_macro(struct file *fp,
252		struct kobject *kobj, struct bin_attribute *attr, char *buf,
253		loff_t off, size_t count)
254{
255	return koneplus_sysfs_write(fp, kobj, buf, off, count,
256			sizeof(struct koneplus_macro), KONEPLUS_COMMAND_MACRO);
257}
258
259static ssize_t koneplus_sysfs_read_sensor(struct file *fp,
260		struct kobject *kobj, struct bin_attribute *attr, char *buf,
261		loff_t off, size_t count)
262{
263	return koneplus_sysfs_read(fp, kobj, buf, off, count,
264			sizeof(struct koneplus_sensor), KONEPLUS_COMMAND_SENSOR);
265}
266
267static ssize_t koneplus_sysfs_write_sensor(struct file *fp,
268		struct kobject *kobj, struct bin_attribute *attr, char *buf,
269		loff_t off, size_t count)
270{
271	return koneplus_sysfs_write(fp, kobj, buf, off, count,
272			sizeof(struct koneplus_sensor), KONEPLUS_COMMAND_SENSOR);
273}
274
275static ssize_t koneplus_sysfs_write_tcu(struct file *fp,
276		struct kobject *kobj, struct bin_attribute *attr, char *buf,
277		loff_t off, size_t count)
278{
279	return koneplus_sysfs_write(fp, kobj, buf, off, count,
280			sizeof(struct koneplus_tcu), KONEPLUS_COMMAND_TCU);
281}
282
283static ssize_t koneplus_sysfs_read_tcu_image(struct file *fp,
284		struct kobject *kobj, struct bin_attribute *attr, char *buf,
285		loff_t off, size_t count)
286{
287	return koneplus_sysfs_read(fp, kobj, buf, off, count,
288			sizeof(struct koneplus_tcu_image), KONEPLUS_COMMAND_TCU);
289}
290
291static ssize_t koneplus_sysfs_read_profilex_settings(struct file *fp,
292		struct kobject *kobj, struct bin_attribute *attr, char *buf,
293		loff_t off, size_t count)
294{
295	struct device *dev =
296			container_of(kobj, struct device, kobj)->parent->parent;
297	struct koneplus_device *koneplus = hid_get_drvdata(dev_get_drvdata(dev));
298
299	if (off >= sizeof(struct koneplus_profile_settings))
300		return 0;
301
302	if (off + count > sizeof(struct koneplus_profile_settings))
303		count = sizeof(struct koneplus_profile_settings) - off;
304
305	mutex_lock(&koneplus->koneplus_lock);
306	memcpy(buf, ((char const *)&koneplus->profile_settings[*(uint *)(attr->private)]) + off,
307			count);
308	mutex_unlock(&koneplus->koneplus_lock);
309
310	return count;
311}
312
313static ssize_t koneplus_sysfs_write_profile_settings(struct file *fp,
314		struct kobject *kobj, struct bin_attribute *attr, char *buf,
315		loff_t off, size_t count)
316{
317	struct device *dev =
318			container_of(kobj, struct device, kobj)->parent->parent;
319	struct koneplus_device *koneplus = hid_get_drvdata(dev_get_drvdata(dev));
320	struct usb_device *usb_dev = interface_to_usbdev(to_usb_interface(dev));
321	int retval = 0;
322	int difference;
323	int profile_number;
324	struct koneplus_profile_settings *profile_settings;
325
326	if (off != 0 || count != sizeof(struct koneplus_profile_settings))
327		return -EINVAL;
328
329	profile_number = ((struct koneplus_profile_settings const *)buf)->number;
330	profile_settings = &koneplus->profile_settings[profile_number];
331
332	mutex_lock(&koneplus->koneplus_lock);
333	difference = memcmp(buf, profile_settings,
334			sizeof(struct koneplus_profile_settings));
335	if (difference) {
336		retval = koneplus_set_profile_settings(usb_dev,
337				(struct koneplus_profile_settings const *)buf);
338		if (!retval)
339			memcpy(profile_settings, buf,
340					sizeof(struct koneplus_profile_settings));
341	}
342	mutex_unlock(&koneplus->koneplus_lock);
343
344	if (retval)
345		return retval;
346
347	return sizeof(struct koneplus_profile_settings);
348}
349
350static ssize_t koneplus_sysfs_read_profilex_buttons(struct file *fp,
351		struct kobject *kobj, struct bin_attribute *attr, char *buf,
352		loff_t off, size_t count)
353{
354	struct device *dev =
355			container_of(kobj, struct device, kobj)->parent->parent;
356	struct koneplus_device *koneplus = hid_get_drvdata(dev_get_drvdata(dev));
357
358	if (off >= sizeof(struct koneplus_profile_buttons))
359		return 0;
360
361	if (off + count > sizeof(struct koneplus_profile_buttons))
362		count = sizeof(struct koneplus_profile_buttons) - off;
363
364	mutex_lock(&koneplus->koneplus_lock);
365	memcpy(buf, ((char const *)&koneplus->profile_buttons[*(uint *)(attr->private)]) + off,
366			count);
367	mutex_unlock(&koneplus->koneplus_lock);
368
369	return count;
370}
371
372static ssize_t koneplus_sysfs_write_profile_buttons(struct file *fp,
373		struct kobject *kobj, struct bin_attribute *attr, char *buf,
374		loff_t off, size_t count)
375{
376	struct device *dev =
377			container_of(kobj, struct device, kobj)->parent->parent;
378	struct koneplus_device *koneplus = hid_get_drvdata(dev_get_drvdata(dev));
379	struct usb_device *usb_dev = interface_to_usbdev(to_usb_interface(dev));
380	int retval = 0;
381	int difference;
382	uint profile_number;
383	struct koneplus_profile_buttons *profile_buttons;
384
385	if (off != 0 || count != sizeof(struct koneplus_profile_buttons))
386		return -EINVAL;
387
388	profile_number = ((struct koneplus_profile_buttons const *)buf)->number;
389	profile_buttons = &koneplus->profile_buttons[profile_number];
390
391	mutex_lock(&koneplus->koneplus_lock);
392	difference = memcmp(buf, profile_buttons,
393			sizeof(struct koneplus_profile_buttons));
394	if (difference) {
395		retval = koneplus_set_profile_buttons(usb_dev,
396				(struct koneplus_profile_buttons const *)buf);
397		if (!retval)
398			memcpy(profile_buttons, buf,
399					sizeof(struct koneplus_profile_buttons));
400	}
401	mutex_unlock(&koneplus->koneplus_lock);
402
403	if (retval)
404		return retval;
405
406	return sizeof(struct koneplus_profile_buttons);
407}
408
409static ssize_t koneplus_sysfs_show_actual_profile(struct device *dev,
410		struct device_attribute *attr, char *buf)
411{
412	struct koneplus_device *koneplus =
413			hid_get_drvdata(dev_get_drvdata(dev->parent->parent));
414	return snprintf(buf, PAGE_SIZE, "%d\n", koneplus->actual_profile);
415}
416
417static ssize_t koneplus_sysfs_set_actual_profile(struct device *dev,
418		struct device_attribute *attr, char const *buf, size_t size)
419{
420	struct koneplus_device *koneplus;
421	struct usb_device *usb_dev;
422	unsigned long profile;
423	int retval;
424	struct koneplus_roccat_report roccat_report;
425
426	dev = dev->parent->parent;
427	koneplus = hid_get_drvdata(dev_get_drvdata(dev));
428	usb_dev = interface_to_usbdev(to_usb_interface(dev));
429
430	retval = strict_strtoul(buf, 10, &profile);
431	if (retval)
432		return retval;
433
434	if (profile > 4)
435		return -EINVAL;
436
437	mutex_lock(&koneplus->koneplus_lock);
438
439	retval = koneplus_set_actual_profile(usb_dev, profile);
440	if (retval) {
441		mutex_unlock(&koneplus->koneplus_lock);
442		return retval;
443	}
444
445	koneplus_profile_activated(koneplus, profile);
446
447	roccat_report.type = KONEPLUS_MOUSE_REPORT_BUTTON_TYPE_PROFILE;
448	roccat_report.data1 = profile + 1;
449	roccat_report.data2 = 0;
450	roccat_report.profile = profile + 1;
451	roccat_report_event(koneplus->chrdev_minor,
452			(uint8_t const *)&roccat_report);
453
454	mutex_unlock(&koneplus->koneplus_lock);
455
456	return size;
457}
458
459static ssize_t koneplus_sysfs_show_firmware_version(struct device *dev,
460		struct device_attribute *attr, char *buf)
461{
462	struct koneplus_device *koneplus =
463			hid_get_drvdata(dev_get_drvdata(dev->parent->parent));
464	return snprintf(buf, PAGE_SIZE, "%d\n", koneplus->info.firmware_version);
465}
466
467static struct device_attribute koneplus_attributes[] = {
468	__ATTR(actual_profile, 0660,
469			koneplus_sysfs_show_actual_profile,
470			koneplus_sysfs_set_actual_profile),
471	__ATTR(startup_profile, 0660,
472			koneplus_sysfs_show_actual_profile,
473			koneplus_sysfs_set_actual_profile),
474	__ATTR(firmware_version, 0440,
475			koneplus_sysfs_show_firmware_version, NULL),
476	__ATTR_NULL
477};
478
479static struct bin_attribute koneplus_bin_attributes[] = {
480	{
481		.attr = { .name = "sensor", .mode = 0660 },
482		.size = sizeof(struct koneplus_sensor),
483		.read = koneplus_sysfs_read_sensor,
484		.write = koneplus_sysfs_write_sensor
485	},
486	{
487		.attr = { .name = "tcu", .mode = 0220 },
488		.size = sizeof(struct koneplus_tcu),
489		.write = koneplus_sysfs_write_tcu
490	},
491	{
492		.attr = { .name = "tcu_image", .mode = 0440 },
493		.size = sizeof(struct koneplus_tcu_image),
494		.read = koneplus_sysfs_read_tcu_image
495	},
496	{
497		.attr = { .name = "profile_settings", .mode = 0220 },
498		.size = sizeof(struct koneplus_profile_settings),
499		.write = koneplus_sysfs_write_profile_settings
500	},
501	{
502		.attr = { .name = "profile1_settings", .mode = 0440 },
503		.size = sizeof(struct koneplus_profile_settings),
504		.read = koneplus_sysfs_read_profilex_settings,
505		.private = &profile_numbers[0]
506	},
507	{
508		.attr = { .name = "profile2_settings", .mode = 0440 },
509		.size = sizeof(struct koneplus_profile_settings),
510		.read = koneplus_sysfs_read_profilex_settings,
511		.private = &profile_numbers[1]
512	},
513	{
514		.attr = { .name = "profile3_settings", .mode = 0440 },
515		.size = sizeof(struct koneplus_profile_settings),
516		.read = koneplus_sysfs_read_profilex_settings,
517		.private = &profile_numbers[2]
518	},
519	{
520		.attr = { .name = "profile4_settings", .mode = 0440 },
521		.size = sizeof(struct koneplus_profile_settings),
522		.read = koneplus_sysfs_read_profilex_settings,
523		.private = &profile_numbers[3]
524	},
525	{
526		.attr = { .name = "profile5_settings", .mode = 0440 },
527		.size = sizeof(struct koneplus_profile_settings),
528		.read = koneplus_sysfs_read_profilex_settings,
529		.private = &profile_numbers[4]
530	},
531	{
532		.attr = { .name = "profile_buttons", .mode = 0220 },
533		.size = sizeof(struct koneplus_profile_buttons),
534		.write = koneplus_sysfs_write_profile_buttons
535	},
536	{
537		.attr = { .name = "profile1_buttons", .mode = 0440 },
538		.size = sizeof(struct koneplus_profile_buttons),
539		.read = koneplus_sysfs_read_profilex_buttons,
540		.private = &profile_numbers[0]
541	},
542	{
543		.attr = { .name = "profile2_buttons", .mode = 0440 },
544		.size = sizeof(struct koneplus_profile_buttons),
545		.read = koneplus_sysfs_read_profilex_buttons,
546		.private = &profile_numbers[1]
547	},
548	{
549		.attr = { .name = "profile3_buttons", .mode = 0440 },
550		.size = sizeof(struct koneplus_profile_buttons),
551		.read = koneplus_sysfs_read_profilex_buttons,
552		.private = &profile_numbers[2]
553	},
554	{
555		.attr = { .name = "profile4_buttons", .mode = 0440 },
556		.size = sizeof(struct koneplus_profile_buttons),
557		.read = koneplus_sysfs_read_profilex_buttons,
558		.private = &profile_numbers[3]
559	},
560	{
561		.attr = { .name = "profile5_buttons", .mode = 0440 },
562		.size = sizeof(struct koneplus_profile_buttons),
563		.read = koneplus_sysfs_read_profilex_buttons,
564		.private = &profile_numbers[4]
565	},
566	{
567		.attr = { .name = "macro", .mode = 0220 },
568		.size = sizeof(struct koneplus_macro),
569		.write = koneplus_sysfs_write_macro
570	},
571	{
572		.attr = { .name = "talk", .mode = 0220 },
573		.size = sizeof(struct koneplus_talk),
574		.write = koneplus_sysfs_write_talk
575	},
576	__ATTR_NULL
577};
578
579static int koneplus_init_koneplus_device_struct(struct usb_device *usb_dev,
580		struct koneplus_device *koneplus)
581{
582	int retval, i;
583	static uint wait = 200;
584
585	mutex_init(&koneplus->koneplus_lock);
586
587	retval = koneplus_get_info(usb_dev, &koneplus->info);
588	if (retval)
589		return retval;
590
591	for (i = 0; i < 5; ++i) {
592		msleep(wait);
593		retval = koneplus_get_profile_settings(usb_dev,
594				&koneplus->profile_settings[i], i);
595		if (retval)
596			return retval;
597
598		msleep(wait);
599		retval = koneplus_get_profile_buttons(usb_dev,
600				&koneplus->profile_buttons[i], i);
601		if (retval)
602			return retval;
603	}
604
605	msleep(wait);
606	retval = koneplus_get_actual_profile(usb_dev);
607	if (retval < 0)
608		return retval;
609	koneplus_profile_activated(koneplus, retval);
610
611	return 0;
612}
613
614static int koneplus_init_specials(struct hid_device *hdev)
615{
616	struct usb_interface *intf = to_usb_interface(hdev->dev.parent);
617	struct usb_device *usb_dev = interface_to_usbdev(intf);
618	struct koneplus_device *koneplus;
619	int retval;
620
621	if (intf->cur_altsetting->desc.bInterfaceProtocol
622			== USB_INTERFACE_PROTOCOL_MOUSE) {
623
624		koneplus = kzalloc(sizeof(*koneplus), GFP_KERNEL);
625		if (!koneplus) {
626			hid_err(hdev, "can't alloc device descriptor\n");
627			return -ENOMEM;
628		}
629		hid_set_drvdata(hdev, koneplus);
630
631		retval = koneplus_init_koneplus_device_struct(usb_dev, koneplus);
632		if (retval) {
633			hid_err(hdev, "couldn't init struct koneplus_device\n");
634			goto exit_free;
635		}
636
637		retval = roccat_connect(koneplus_class, hdev,
638				sizeof(struct koneplus_roccat_report));
639		if (retval < 0) {
640			hid_err(hdev, "couldn't init char dev\n");
641		} else {
642			koneplus->chrdev_minor = retval;
643			koneplus->roccat_claimed = 1;
644		}
645	} else {
646		hid_set_drvdata(hdev, NULL);
647	}
648
649	return 0;
650exit_free:
651	kfree(koneplus);
652	return retval;
653}
654
655static void koneplus_remove_specials(struct hid_device *hdev)
656{
657	struct usb_interface *intf = to_usb_interface(hdev->dev.parent);
658	struct koneplus_device *koneplus;
659
660	if (intf->cur_altsetting->desc.bInterfaceProtocol
661			== USB_INTERFACE_PROTOCOL_MOUSE) {
662		koneplus = hid_get_drvdata(hdev);
663		if (koneplus->roccat_claimed)
664			roccat_disconnect(koneplus->chrdev_minor);
665		kfree(koneplus);
666	}
667}
668
669static int koneplus_probe(struct hid_device *hdev,
670		const struct hid_device_id *id)
671{
672	int retval;
673
674	retval = hid_parse(hdev);
675	if (retval) {
676		hid_err(hdev, "parse failed\n");
677		goto exit;
678	}
679
680	retval = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
681	if (retval) {
682		hid_err(hdev, "hw start failed\n");
683		goto exit;
684	}
685
686	retval = koneplus_init_specials(hdev);
687	if (retval) {
688		hid_err(hdev, "couldn't install mouse\n");
689		goto exit_stop;
690	}
691
692	return 0;
693
694exit_stop:
695	hid_hw_stop(hdev);
696exit:
697	return retval;
698}
699
700static void koneplus_remove(struct hid_device *hdev)
701{
702	koneplus_remove_specials(hdev);
703	hid_hw_stop(hdev);
704}
705
706static void koneplus_keep_values_up_to_date(struct koneplus_device *koneplus,
707		u8 const *data)
708{
709	struct koneplus_mouse_report_button const *button_report;
710
711	switch (data[0]) {
712	case KONEPLUS_MOUSE_REPORT_NUMBER_BUTTON:
713		button_report = (struct koneplus_mouse_report_button const *)data;
714		switch (button_report->type) {
715		case KONEPLUS_MOUSE_REPORT_BUTTON_TYPE_PROFILE:
716			koneplus_profile_activated(koneplus, button_report->data1 - 1);
717			break;
718		}
719		break;
720	}
721}
722
723static void koneplus_report_to_chrdev(struct koneplus_device const *koneplus,
724		u8 const *data)
725{
726	struct koneplus_roccat_report roccat_report;
727	struct koneplus_mouse_report_button const *button_report;
728
729	if (data[0] != KONEPLUS_MOUSE_REPORT_NUMBER_BUTTON)
730		return;
731
732	button_report = (struct koneplus_mouse_report_button const *)data;
733
734	if ((button_report->type == KONEPLUS_MOUSE_REPORT_BUTTON_TYPE_QUICKLAUNCH ||
735			button_report->type == KONEPLUS_MOUSE_REPORT_BUTTON_TYPE_TIMER) &&
736			button_report->data2 != KONEPLUS_MOUSE_REPORT_BUTTON_ACTION_PRESS)
737		return;
738
739	roccat_report.type = button_report->type;
740	roccat_report.data1 = button_report->data1;
741	roccat_report.data2 = button_report->data2;
742	roccat_report.profile = koneplus->actual_profile + 1;
743	roccat_report_event(koneplus->chrdev_minor,
744			(uint8_t const *)&roccat_report);
745}
746
747static int koneplus_raw_event(struct hid_device *hdev,
748		struct hid_report *report, u8 *data, int size)
749{
750	struct usb_interface *intf = to_usb_interface(hdev->dev.parent);
751	struct koneplus_device *koneplus = hid_get_drvdata(hdev);
752
753	if (intf->cur_altsetting->desc.bInterfaceProtocol
754			!= USB_INTERFACE_PROTOCOL_MOUSE)
755		return 0;
756
757	if (koneplus == NULL)
758		return 0;
759
760	koneplus_keep_values_up_to_date(koneplus, data);
761
762	if (koneplus->roccat_claimed)
763		koneplus_report_to_chrdev(koneplus, data);
764
765	return 0;
766}
767
768static const struct hid_device_id koneplus_devices[] = {
769	{ HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_KONEPLUS) },
770	{ }
771};
772
773MODULE_DEVICE_TABLE(hid, koneplus_devices);
774
775static struct hid_driver koneplus_driver = {
776		.name = "koneplus",
777		.id_table = koneplus_devices,
778		.probe = koneplus_probe,
779		.remove = koneplus_remove,
780		.raw_event = koneplus_raw_event
781};
782
783static int __init koneplus_init(void)
784{
785	int retval;
786
787	/* class name has to be same as driver name */
788	koneplus_class = class_create(THIS_MODULE, "koneplus");
789	if (IS_ERR(koneplus_class))
790		return PTR_ERR(koneplus_class);
791	koneplus_class->dev_attrs = koneplus_attributes;
792	koneplus_class->dev_bin_attrs = koneplus_bin_attributes;
793
794	retval = hid_register_driver(&koneplus_driver);
795	if (retval)
796		class_destroy(koneplus_class);
797	return retval;
798}
799
800static void __exit koneplus_exit(void)
801{
802	hid_unregister_driver(&koneplus_driver);
803	class_destroy(koneplus_class);
804}
805
806module_init(koneplus_init);
807module_exit(koneplus_exit);
808
809MODULE_AUTHOR("Stefan Achatz");
810MODULE_DESCRIPTION("USB Roccat Kone[+] driver");
811MODULE_LICENSE("GPL v2");
812