xref: /linux/drivers/hid/hid-roccat-koneplus.c (revision bfd5bb6f90af092aa345b15cd78143956a13c2a8) 
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  * KoneXTD has same capabilities but updated sensor.
18  */
19 
20 #include <linux/device.h>
21 #include <linux/input.h>
22 #include <linux/hid.h>
23 #include <linux/module.h>
24 #include <linux/slab.h>
25 #include <linux/hid-roccat.h>
26 #include "hid-ids.h"
27 #include "hid-roccat-common.h"
28 #include "hid-roccat-koneplus.h"
29 
30 static uint profile_numbers[5] = {0, 1, 2, 3, 4};
31 
32 static struct class *koneplus_class;
33 
34 static void koneplus_profile_activated(struct koneplus_device *koneplus,
35 		uint new_profile)
36 {
37 	koneplus->actual_profile = new_profile;
38 }
39 
40 static int koneplus_send_control(struct usb_device *usb_dev, uint value,
41 		enum koneplus_control_requests request)
42 {
43 	struct roccat_common2_control control;
44 
45 	if ((request == KONEPLUS_CONTROL_REQUEST_PROFILE_SETTINGS ||
46 			request == KONEPLUS_CONTROL_REQUEST_PROFILE_BUTTONS) &&
47 			value > 4)
48 		return -EINVAL;
49 
50 	control.command = ROCCAT_COMMON_COMMAND_CONTROL;
51 	control.value = value;
52 	control.request = request;
53 
54 	return roccat_common2_send_with_status(usb_dev,
55 			ROCCAT_COMMON_COMMAND_CONTROL,
56 			&control, sizeof(struct roccat_common2_control));
57 }
58 
59 
60 /* retval is 0-4 on success, < 0 on error */
61 static int koneplus_get_actual_profile(struct usb_device *usb_dev)
62 {
63 	struct koneplus_actual_profile buf;
64 	int retval;
65 
66 	retval = roccat_common2_receive(usb_dev, KONEPLUS_COMMAND_ACTUAL_PROFILE,
67 			&buf, KONEPLUS_SIZE_ACTUAL_PROFILE);
68 
69 	return retval ? retval : buf.actual_profile;
70 }
71 
72 static int koneplus_set_actual_profile(struct usb_device *usb_dev,
73 		int new_profile)
74 {
75 	struct koneplus_actual_profile buf;
76 
77 	buf.command = KONEPLUS_COMMAND_ACTUAL_PROFILE;
78 	buf.size = KONEPLUS_SIZE_ACTUAL_PROFILE;
79 	buf.actual_profile = new_profile;
80 
81 	return roccat_common2_send_with_status(usb_dev,
82 			KONEPLUS_COMMAND_ACTUAL_PROFILE,
83 			&buf, KONEPLUS_SIZE_ACTUAL_PROFILE);
84 }
85 
86 static ssize_t koneplus_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 koneplus_device *koneplus = 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(&koneplus->koneplus_lock);
102 	retval = roccat_common2_receive(usb_dev, command, buf, real_size);
103 	mutex_unlock(&koneplus->koneplus_lock);
104 
105 	if (retval)
106 		return retval;
107 
108 	return real_size;
109 }
110 
111 static ssize_t koneplus_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 koneplus_device *koneplus = 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(&koneplus->koneplus_lock);
124 	retval = roccat_common2_send_with_status(usb_dev, command,
125 			buf, real_size);
126 	mutex_unlock(&koneplus->koneplus_lock);
127 
128 	if (retval)
129 		return retval;
130 
131 	return real_size;
132 }
133 
134 #define KONEPLUS_SYSFS_W(thingy, THINGY) \
135 static ssize_t koneplus_sysfs_write_ ## thingy(struct file *fp, \
136 		struct kobject *kobj, struct bin_attribute *attr, char *buf, \
137 		loff_t off, size_t count) \
138 { \
139 	return koneplus_sysfs_write(fp, kobj, buf, off, count, \
140 			KONEPLUS_SIZE_ ## THINGY, KONEPLUS_COMMAND_ ## THINGY); \
141 }
142 
143 #define KONEPLUS_SYSFS_R(thingy, THINGY) \
144 static ssize_t koneplus_sysfs_read_ ## thingy(struct file *fp, \
145 		struct kobject *kobj, struct bin_attribute *attr, char *buf, \
146 		loff_t off, size_t count) \
147 { \
148 	return koneplus_sysfs_read(fp, kobj, buf, off, count, \
149 			KONEPLUS_SIZE_ ## THINGY, KONEPLUS_COMMAND_ ## THINGY); \
150 }
151 
152 #define KONEPLUS_SYSFS_RW(thingy, THINGY) \
153 KONEPLUS_SYSFS_W(thingy, THINGY) \
154 KONEPLUS_SYSFS_R(thingy, THINGY)
155 
156 #define KONEPLUS_BIN_ATTRIBUTE_RW(thingy, THINGY) \
157 KONEPLUS_SYSFS_RW(thingy, THINGY); \
158 static struct bin_attribute bin_attr_##thingy = { \
159 	.attr = { .name = #thingy, .mode = 0660 }, \
160 	.size = KONEPLUS_SIZE_ ## THINGY, \
161 	.read = koneplus_sysfs_read_ ## thingy, \
162 	.write = koneplus_sysfs_write_ ## thingy \
163 }
164 
165 #define KONEPLUS_BIN_ATTRIBUTE_R(thingy, THINGY) \
166 KONEPLUS_SYSFS_R(thingy, THINGY); \
167 static struct bin_attribute bin_attr_##thingy = { \
168 	.attr = { .name = #thingy, .mode = 0440 }, \
169 	.size = KONEPLUS_SIZE_ ## THINGY, \
170 	.read = koneplus_sysfs_read_ ## thingy, \
171 }
172 
173 #define KONEPLUS_BIN_ATTRIBUTE_W(thingy, THINGY) \
174 KONEPLUS_SYSFS_W(thingy, THINGY); \
175 static struct bin_attribute bin_attr_##thingy = { \
176 	.attr = { .name = #thingy, .mode = 0220 }, \
177 	.size = KONEPLUS_SIZE_ ## THINGY, \
178 	.write = koneplus_sysfs_write_ ## thingy \
179 }
180 KONEPLUS_BIN_ATTRIBUTE_W(control, CONTROL);
181 KONEPLUS_BIN_ATTRIBUTE_W(talk, TALK);
182 KONEPLUS_BIN_ATTRIBUTE_W(macro, MACRO);
183 KONEPLUS_BIN_ATTRIBUTE_R(tcu_image, TCU_IMAGE);
184 KONEPLUS_BIN_ATTRIBUTE_RW(info, INFO);
185 KONEPLUS_BIN_ATTRIBUTE_RW(sensor, SENSOR);
186 KONEPLUS_BIN_ATTRIBUTE_RW(tcu, TCU);
187 KONEPLUS_BIN_ATTRIBUTE_RW(profile_settings, PROFILE_SETTINGS);
188 KONEPLUS_BIN_ATTRIBUTE_RW(profile_buttons, PROFILE_BUTTONS);
189 
190 static ssize_t koneplus_sysfs_read_profilex_settings(struct file *fp,
191 		struct kobject *kobj, struct bin_attribute *attr, char *buf,
192 		loff_t off, size_t count)
193 {
194 	struct device *dev = kobj_to_dev(kobj)->parent->parent;
195 	struct usb_device *usb_dev = interface_to_usbdev(to_usb_interface(dev));
196 	ssize_t retval;
197 
198 	retval = koneplus_send_control(usb_dev, *(uint *)(attr->private),
199 			KONEPLUS_CONTROL_REQUEST_PROFILE_SETTINGS);
200 	if (retval)
201 		return retval;
202 
203 	return koneplus_sysfs_read(fp, kobj, buf, off, count,
204 			KONEPLUS_SIZE_PROFILE_SETTINGS,
205 			KONEPLUS_COMMAND_PROFILE_SETTINGS);
206 }
207 
208 static ssize_t koneplus_sysfs_read_profilex_buttons(struct file *fp,
209 		struct kobject *kobj, struct bin_attribute *attr, char *buf,
210 		loff_t off, size_t count)
211 {
212 	struct device *dev = kobj_to_dev(kobj)->parent->parent;
213 	struct usb_device *usb_dev = interface_to_usbdev(to_usb_interface(dev));
214 	ssize_t retval;
215 
216 	retval = koneplus_send_control(usb_dev, *(uint *)(attr->private),
217 			KONEPLUS_CONTROL_REQUEST_PROFILE_BUTTONS);
218 	if (retval)
219 		return retval;
220 
221 	return koneplus_sysfs_read(fp, kobj, buf, off, count,
222 			KONEPLUS_SIZE_PROFILE_BUTTONS,
223 			KONEPLUS_COMMAND_PROFILE_BUTTONS);
224 }
225 
226 #define PROFILE_ATTR(number)						\
227 static struct bin_attribute bin_attr_profile##number##_settings = {	\
228 	.attr = { .name = "profile" #number "_settings", .mode = 0440 },	\
229 	.size = KONEPLUS_SIZE_PROFILE_SETTINGS,				\
230 	.read = koneplus_sysfs_read_profilex_settings,			\
231 	.private = &profile_numbers[number-1],				\
232 };									\
233 static struct bin_attribute bin_attr_profile##number##_buttons = {	\
234 	.attr = { .name = "profile" #number "_buttons", .mode = 0440 },	\
235 	.size = KONEPLUS_SIZE_PROFILE_BUTTONS,				\
236 	.read = koneplus_sysfs_read_profilex_buttons,			\
237 	.private = &profile_numbers[number-1],				\
238 };
239 PROFILE_ATTR(1);
240 PROFILE_ATTR(2);
241 PROFILE_ATTR(3);
242 PROFILE_ATTR(4);
243 PROFILE_ATTR(5);
244 
245 static ssize_t koneplus_sysfs_show_actual_profile(struct device *dev,
246 		struct device_attribute *attr, char *buf)
247 {
248 	struct koneplus_device *koneplus =
249 			hid_get_drvdata(dev_get_drvdata(dev->parent->parent));
250 	return snprintf(buf, PAGE_SIZE, "%d\n", koneplus->actual_profile);
251 }
252 
253 static ssize_t koneplus_sysfs_set_actual_profile(struct device *dev,
254 		struct device_attribute *attr, char const *buf, size_t size)
255 {
256 	struct koneplus_device *koneplus;
257 	struct usb_device *usb_dev;
258 	unsigned long profile;
259 	int retval;
260 	struct koneplus_roccat_report roccat_report;
261 
262 	dev = dev->parent->parent;
263 	koneplus = hid_get_drvdata(dev_get_drvdata(dev));
264 	usb_dev = interface_to_usbdev(to_usb_interface(dev));
265 
266 	retval = kstrtoul(buf, 10, &profile);
267 	if (retval)
268 		return retval;
269 
270 	if (profile > 4)
271 		return -EINVAL;
272 
273 	mutex_lock(&koneplus->koneplus_lock);
274 
275 	retval = koneplus_set_actual_profile(usb_dev, profile);
276 	if (retval) {
277 		mutex_unlock(&koneplus->koneplus_lock);
278 		return retval;
279 	}
280 
281 	koneplus_profile_activated(koneplus, profile);
282 
283 	roccat_report.type = KONEPLUS_MOUSE_REPORT_BUTTON_TYPE_PROFILE;
284 	roccat_report.data1 = profile + 1;
285 	roccat_report.data2 = 0;
286 	roccat_report.profile = profile + 1;
287 	roccat_report_event(koneplus->chrdev_minor,
288 			(uint8_t const *)&roccat_report);
289 
290 	mutex_unlock(&koneplus->koneplus_lock);
291 
292 	return size;
293 }
294 static DEVICE_ATTR(actual_profile, 0660,
295 		   koneplus_sysfs_show_actual_profile,
296 		   koneplus_sysfs_set_actual_profile);
297 static DEVICE_ATTR(startup_profile, 0660,
298 		   koneplus_sysfs_show_actual_profile,
299 		   koneplus_sysfs_set_actual_profile);
300 
301 static ssize_t koneplus_sysfs_show_firmware_version(struct device *dev,
302 		struct device_attribute *attr, char *buf)
303 {
304 	struct koneplus_device *koneplus;
305 	struct usb_device *usb_dev;
306 	struct koneplus_info info;
307 
308 	dev = dev->parent->parent;
309 	koneplus = hid_get_drvdata(dev_get_drvdata(dev));
310 	usb_dev = interface_to_usbdev(to_usb_interface(dev));
311 
312 	mutex_lock(&koneplus->koneplus_lock);
313 	roccat_common2_receive(usb_dev, KONEPLUS_COMMAND_INFO,
314 			&info, KONEPLUS_SIZE_INFO);
315 	mutex_unlock(&koneplus->koneplus_lock);
316 
317 	return snprintf(buf, PAGE_SIZE, "%d\n", info.firmware_version);
318 }
319 static DEVICE_ATTR(firmware_version, 0440,
320 		   koneplus_sysfs_show_firmware_version, NULL);
321 
322 static struct attribute *koneplus_attrs[] = {
323 	&dev_attr_actual_profile.attr,
324 	&dev_attr_startup_profile.attr,
325 	&dev_attr_firmware_version.attr,
326 	NULL,
327 };
328 
329 static struct bin_attribute *koneplus_bin_attributes[] = {
330 	&bin_attr_control,
331 	&bin_attr_talk,
332 	&bin_attr_macro,
333 	&bin_attr_tcu_image,
334 	&bin_attr_info,
335 	&bin_attr_sensor,
336 	&bin_attr_tcu,
337 	&bin_attr_profile_settings,
338 	&bin_attr_profile_buttons,
339 	&bin_attr_profile1_settings,
340 	&bin_attr_profile2_settings,
341 	&bin_attr_profile3_settings,
342 	&bin_attr_profile4_settings,
343 	&bin_attr_profile5_settings,
344 	&bin_attr_profile1_buttons,
345 	&bin_attr_profile2_buttons,
346 	&bin_attr_profile3_buttons,
347 	&bin_attr_profile4_buttons,
348 	&bin_attr_profile5_buttons,
349 	NULL,
350 };
351 
352 static const struct attribute_group koneplus_group = {
353 	.attrs = koneplus_attrs,
354 	.bin_attrs = koneplus_bin_attributes,
355 };
356 
357 static const struct attribute_group *koneplus_groups[] = {
358 	&koneplus_group,
359 	NULL,
360 };
361 
362 static int koneplus_init_koneplus_device_struct(struct usb_device *usb_dev,
363 		struct koneplus_device *koneplus)
364 {
365 	int retval;
366 
367 	mutex_init(&koneplus->koneplus_lock);
368 
369 	retval = koneplus_get_actual_profile(usb_dev);
370 	if (retval < 0)
371 		return retval;
372 	koneplus_profile_activated(koneplus, retval);
373 
374 	return 0;
375 }
376 
377 static int koneplus_init_specials(struct hid_device *hdev)
378 {
379 	struct usb_interface *intf = to_usb_interface(hdev->dev.parent);
380 	struct usb_device *usb_dev = interface_to_usbdev(intf);
381 	struct koneplus_device *koneplus;
382 	int retval;
383 
384 	if (intf->cur_altsetting->desc.bInterfaceProtocol
385 			== USB_INTERFACE_PROTOCOL_MOUSE) {
386 
387 		koneplus = kzalloc(sizeof(*koneplus), GFP_KERNEL);
388 		if (!koneplus) {
389 			hid_err(hdev, "can't alloc device descriptor\n");
390 			return -ENOMEM;
391 		}
392 		hid_set_drvdata(hdev, koneplus);
393 
394 		retval = koneplus_init_koneplus_device_struct(usb_dev, koneplus);
395 		if (retval) {
396 			hid_err(hdev, "couldn't init struct koneplus_device\n");
397 			goto exit_free;
398 		}
399 
400 		retval = roccat_connect(koneplus_class, hdev,
401 				sizeof(struct koneplus_roccat_report));
402 		if (retval < 0) {
403 			hid_err(hdev, "couldn't init char dev\n");
404 		} else {
405 			koneplus->chrdev_minor = retval;
406 			koneplus->roccat_claimed = 1;
407 		}
408 	} else {
409 		hid_set_drvdata(hdev, NULL);
410 	}
411 
412 	return 0;
413 exit_free:
414 	kfree(koneplus);
415 	return retval;
416 }
417 
418 static void koneplus_remove_specials(struct hid_device *hdev)
419 {
420 	struct usb_interface *intf = to_usb_interface(hdev->dev.parent);
421 	struct koneplus_device *koneplus;
422 
423 	if (intf->cur_altsetting->desc.bInterfaceProtocol
424 			== USB_INTERFACE_PROTOCOL_MOUSE) {
425 		koneplus = hid_get_drvdata(hdev);
426 		if (koneplus->roccat_claimed)
427 			roccat_disconnect(koneplus->chrdev_minor);
428 		kfree(koneplus);
429 	}
430 }
431 
432 static int koneplus_probe(struct hid_device *hdev,
433 		const struct hid_device_id *id)
434 {
435 	int retval;
436 
437 	retval = hid_parse(hdev);
438 	if (retval) {
439 		hid_err(hdev, "parse failed\n");
440 		goto exit;
441 	}
442 
443 	retval = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
444 	if (retval) {
445 		hid_err(hdev, "hw start failed\n");
446 		goto exit;
447 	}
448 
449 	retval = koneplus_init_specials(hdev);
450 	if (retval) {
451 		hid_err(hdev, "couldn't install mouse\n");
452 		goto exit_stop;
453 	}
454 
455 	return 0;
456 
457 exit_stop:
458 	hid_hw_stop(hdev);
459 exit:
460 	return retval;
461 }
462 
463 static void koneplus_remove(struct hid_device *hdev)
464 {
465 	koneplus_remove_specials(hdev);
466 	hid_hw_stop(hdev);
467 }
468 
469 static void koneplus_keep_values_up_to_date(struct koneplus_device *koneplus,
470 		u8 const *data)
471 {
472 	struct koneplus_mouse_report_button const *button_report;
473 
474 	switch (data[0]) {
475 	case KONEPLUS_MOUSE_REPORT_NUMBER_BUTTON:
476 		button_report = (struct koneplus_mouse_report_button const *)data;
477 		switch (button_report->type) {
478 		case KONEPLUS_MOUSE_REPORT_BUTTON_TYPE_PROFILE:
479 			koneplus_profile_activated(koneplus, button_report->data1 - 1);
480 			break;
481 		}
482 		break;
483 	}
484 }
485 
486 static void koneplus_report_to_chrdev(struct koneplus_device const *koneplus,
487 		u8 const *data)
488 {
489 	struct koneplus_roccat_report roccat_report;
490 	struct koneplus_mouse_report_button const *button_report;
491 
492 	if (data[0] != KONEPLUS_MOUSE_REPORT_NUMBER_BUTTON)
493 		return;
494 
495 	button_report = (struct koneplus_mouse_report_button const *)data;
496 
497 	if ((button_report->type == KONEPLUS_MOUSE_REPORT_BUTTON_TYPE_QUICKLAUNCH ||
498 			button_report->type == KONEPLUS_MOUSE_REPORT_BUTTON_TYPE_TIMER) &&
499 			button_report->data2 != KONEPLUS_MOUSE_REPORT_BUTTON_ACTION_PRESS)
500 		return;
501 
502 	roccat_report.type = button_report->type;
503 	roccat_report.data1 = button_report->data1;
504 	roccat_report.data2 = button_report->data2;
505 	roccat_report.profile = koneplus->actual_profile + 1;
506 	roccat_report_event(koneplus->chrdev_minor,
507 			(uint8_t const *)&roccat_report);
508 }
509 
510 static int koneplus_raw_event(struct hid_device *hdev,
511 		struct hid_report *report, u8 *data, int size)
512 {
513 	struct usb_interface *intf = to_usb_interface(hdev->dev.parent);
514 	struct koneplus_device *koneplus = hid_get_drvdata(hdev);
515 
516 	if (intf->cur_altsetting->desc.bInterfaceProtocol
517 			!= USB_INTERFACE_PROTOCOL_MOUSE)
518 		return 0;
519 
520 	if (koneplus == NULL)
521 		return 0;
522 
523 	koneplus_keep_values_up_to_date(koneplus, data);
524 
525 	if (koneplus->roccat_claimed)
526 		koneplus_report_to_chrdev(koneplus, data);
527 
528 	return 0;
529 }
530 
531 static const struct hid_device_id koneplus_devices[] = {
532 	{ HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_KONEPLUS) },
533 	{ HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_KONEXTD) },
534 	{ }
535 };
536 
537 MODULE_DEVICE_TABLE(hid, koneplus_devices);
538 
539 static struct hid_driver koneplus_driver = {
540 		.name = "koneplus",
541 		.id_table = koneplus_devices,
542 		.probe = koneplus_probe,
543 		.remove = koneplus_remove,
544 		.raw_event = koneplus_raw_event
545 };
546 
547 static int __init koneplus_init(void)
548 {
549 	int retval;
550 
551 	/* class name has to be same as driver name */
552 	koneplus_class = class_create(THIS_MODULE, "koneplus");
553 	if (IS_ERR(koneplus_class))
554 		return PTR_ERR(koneplus_class);
555 	koneplus_class->dev_groups = koneplus_groups;
556 
557 	retval = hid_register_driver(&koneplus_driver);
558 	if (retval)
559 		class_destroy(koneplus_class);
560 	return retval;
561 }
562 
563 static void __exit koneplus_exit(void)
564 {
565 	hid_unregister_driver(&koneplus_driver);
566 	class_destroy(koneplus_class);
567 }
568 
569 module_init(koneplus_init);
570 module_exit(koneplus_exit);
571 
572 MODULE_AUTHOR("Stefan Achatz");
573 MODULE_DESCRIPTION("USB Roccat Kone[+]/XTD driver");
574 MODULE_LICENSE("GPL v2");
575