xref: /linux/drivers/hid/hid-roccat-koneplus.c (revision 4be5e8648b0c287aefc6ac3f3a0b12c696054f43) 
1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3  * Roccat Kone[+] driver for Linux
4  *
5  * Copyright (c) 2010 Stefan Achatz <erazor_de@users.sourceforge.net>
6  */
7 
8 /*
9  */
10 
11 /*
12  * Roccat Kone[+] is an updated/improved version of the Kone with more memory
13  * and functionality and without the non-standard behaviours the Kone had.
14  * KoneXTD has same capabilities but updated sensor.
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-koneplus.h"
26 
27 static uint profile_numbers[5] = {0, 1, 2, 3, 4};
28 
29 static struct class *koneplus_class;
30 
31 static void koneplus_profile_activated(struct koneplus_device *koneplus,
32 		uint new_profile)
33 {
34 	koneplus->actual_profile = new_profile;
35 }
36 
37 static int koneplus_send_control(struct usb_device *usb_dev, uint value,
38 		enum koneplus_control_requests request)
39 {
40 	struct roccat_common2_control control;
41 
42 	if ((request == KONEPLUS_CONTROL_REQUEST_PROFILE_SETTINGS ||
43 			request == KONEPLUS_CONTROL_REQUEST_PROFILE_BUTTONS) &&
44 			value > 4)
45 		return -EINVAL;
46 
47 	control.command = ROCCAT_COMMON_COMMAND_CONTROL;
48 	control.value = value;
49 	control.request = request;
50 
51 	return roccat_common2_send_with_status(usb_dev,
52 			ROCCAT_COMMON_COMMAND_CONTROL,
53 			&control, sizeof(struct roccat_common2_control));
54 }
55 
56 
57 /* retval is 0-4 on success, < 0 on error */
58 static int koneplus_get_actual_profile(struct usb_device *usb_dev)
59 {
60 	struct koneplus_actual_profile buf;
61 	int retval;
62 
63 	retval = roccat_common2_receive(usb_dev, KONEPLUS_COMMAND_ACTUAL_PROFILE,
64 			&buf, KONEPLUS_SIZE_ACTUAL_PROFILE);
65 
66 	return retval ? retval : buf.actual_profile;
67 }
68 
69 static int koneplus_set_actual_profile(struct usb_device *usb_dev,
70 		int new_profile)
71 {
72 	struct koneplus_actual_profile buf;
73 
74 	buf.command = KONEPLUS_COMMAND_ACTUAL_PROFILE;
75 	buf.size = KONEPLUS_SIZE_ACTUAL_PROFILE;
76 	buf.actual_profile = new_profile;
77 
78 	return roccat_common2_send_with_status(usb_dev,
79 			KONEPLUS_COMMAND_ACTUAL_PROFILE,
80 			&buf, KONEPLUS_SIZE_ACTUAL_PROFILE);
81 }
82 
83 static ssize_t koneplus_sysfs_read(struct file *fp, struct kobject *kobj,
84 		char *buf, loff_t off, size_t count,
85 		size_t real_size, uint command)
86 {
87 	struct device *dev = kobj_to_dev(kobj)->parent->parent;
88 	struct koneplus_device *koneplus = hid_get_drvdata(dev_get_drvdata(dev));
89 	struct usb_device *usb_dev = interface_to_usbdev(to_usb_interface(dev));
90 	int retval;
91 
92 	if (off >= real_size)
93 		return 0;
94 
95 	if (off != 0 || count != real_size)
96 		return -EINVAL;
97 
98 	mutex_lock(&koneplus->koneplus_lock);
99 	retval = roccat_common2_receive(usb_dev, command, buf, real_size);
100 	mutex_unlock(&koneplus->koneplus_lock);
101 
102 	if (retval)
103 		return retval;
104 
105 	return real_size;
106 }
107 
108 static ssize_t koneplus_sysfs_write(struct file *fp, struct kobject *kobj,
109 		void const *buf, loff_t off, size_t count,
110 		size_t real_size, uint command)
111 {
112 	struct device *dev = kobj_to_dev(kobj)->parent->parent;
113 	struct koneplus_device *koneplus = hid_get_drvdata(dev_get_drvdata(dev));
114 	struct usb_device *usb_dev = interface_to_usbdev(to_usb_interface(dev));
115 	int retval;
116 
117 	if (off != 0 || count != real_size)
118 		return -EINVAL;
119 
120 	mutex_lock(&koneplus->koneplus_lock);
121 	retval = roccat_common2_send_with_status(usb_dev, command,
122 			buf, real_size);
123 	mutex_unlock(&koneplus->koneplus_lock);
124 
125 	if (retval)
126 		return retval;
127 
128 	return real_size;
129 }
130 
131 #define KONEPLUS_SYSFS_W(thingy, THINGY) \
132 static ssize_t koneplus_sysfs_write_ ## thingy(struct file *fp, \
133 		struct kobject *kobj, struct bin_attribute *attr, char *buf, \
134 		loff_t off, size_t count) \
135 { \
136 	return koneplus_sysfs_write(fp, kobj, buf, off, count, \
137 			KONEPLUS_SIZE_ ## THINGY, KONEPLUS_COMMAND_ ## THINGY); \
138 }
139 
140 #define KONEPLUS_SYSFS_R(thingy, THINGY) \
141 static ssize_t koneplus_sysfs_read_ ## thingy(struct file *fp, \
142 		struct kobject *kobj, struct bin_attribute *attr, char *buf, \
143 		loff_t off, size_t count) \
144 { \
145 	return koneplus_sysfs_read(fp, kobj, buf, off, count, \
146 			KONEPLUS_SIZE_ ## THINGY, KONEPLUS_COMMAND_ ## THINGY); \
147 }
148 
149 #define KONEPLUS_SYSFS_RW(thingy, THINGY) \
150 KONEPLUS_SYSFS_W(thingy, THINGY) \
151 KONEPLUS_SYSFS_R(thingy, THINGY)
152 
153 #define KONEPLUS_BIN_ATTRIBUTE_RW(thingy, THINGY) \
154 KONEPLUS_SYSFS_RW(thingy, THINGY); \
155 static struct bin_attribute bin_attr_##thingy = { \
156 	.attr = { .name = #thingy, .mode = 0660 }, \
157 	.size = KONEPLUS_SIZE_ ## THINGY, \
158 	.read = koneplus_sysfs_read_ ## thingy, \
159 	.write = koneplus_sysfs_write_ ## thingy \
160 }
161 
162 #define KONEPLUS_BIN_ATTRIBUTE_R(thingy, THINGY) \
163 KONEPLUS_SYSFS_R(thingy, THINGY); \
164 static struct bin_attribute bin_attr_##thingy = { \
165 	.attr = { .name = #thingy, .mode = 0440 }, \
166 	.size = KONEPLUS_SIZE_ ## THINGY, \
167 	.read = koneplus_sysfs_read_ ## thingy, \
168 }
169 
170 #define KONEPLUS_BIN_ATTRIBUTE_W(thingy, THINGY) \
171 KONEPLUS_SYSFS_W(thingy, THINGY); \
172 static struct bin_attribute bin_attr_##thingy = { \
173 	.attr = { .name = #thingy, .mode = 0220 }, \
174 	.size = KONEPLUS_SIZE_ ## THINGY, \
175 	.write = koneplus_sysfs_write_ ## thingy \
176 }
177 KONEPLUS_BIN_ATTRIBUTE_W(control, CONTROL);
178 KONEPLUS_BIN_ATTRIBUTE_W(talk, TALK);
179 KONEPLUS_BIN_ATTRIBUTE_W(macro, MACRO);
180 KONEPLUS_BIN_ATTRIBUTE_R(tcu_image, TCU_IMAGE);
181 KONEPLUS_BIN_ATTRIBUTE_RW(info, INFO);
182 KONEPLUS_BIN_ATTRIBUTE_RW(sensor, SENSOR);
183 KONEPLUS_BIN_ATTRIBUTE_RW(tcu, TCU);
184 KONEPLUS_BIN_ATTRIBUTE_RW(profile_settings, PROFILE_SETTINGS);
185 KONEPLUS_BIN_ATTRIBUTE_RW(profile_buttons, PROFILE_BUTTONS);
186 
187 static ssize_t koneplus_sysfs_read_profilex_settings(struct file *fp,
188 		struct kobject *kobj, struct bin_attribute *attr, char *buf,
189 		loff_t off, size_t count)
190 {
191 	struct device *dev = kobj_to_dev(kobj)->parent->parent;
192 	struct usb_device *usb_dev = interface_to_usbdev(to_usb_interface(dev));
193 	ssize_t retval;
194 
195 	retval = koneplus_send_control(usb_dev, *(uint *)(attr->private),
196 			KONEPLUS_CONTROL_REQUEST_PROFILE_SETTINGS);
197 	if (retval)
198 		return retval;
199 
200 	return koneplus_sysfs_read(fp, kobj, buf, off, count,
201 			KONEPLUS_SIZE_PROFILE_SETTINGS,
202 			KONEPLUS_COMMAND_PROFILE_SETTINGS);
203 }
204 
205 static ssize_t koneplus_sysfs_read_profilex_buttons(struct file *fp,
206 		struct kobject *kobj, struct bin_attribute *attr, char *buf,
207 		loff_t off, size_t count)
208 {
209 	struct device *dev = kobj_to_dev(kobj)->parent->parent;
210 	struct usb_device *usb_dev = interface_to_usbdev(to_usb_interface(dev));
211 	ssize_t retval;
212 
213 	retval = koneplus_send_control(usb_dev, *(uint *)(attr->private),
214 			KONEPLUS_CONTROL_REQUEST_PROFILE_BUTTONS);
215 	if (retval)
216 		return retval;
217 
218 	return koneplus_sysfs_read(fp, kobj, buf, off, count,
219 			KONEPLUS_SIZE_PROFILE_BUTTONS,
220 			KONEPLUS_COMMAND_PROFILE_BUTTONS);
221 }
222 
223 #define PROFILE_ATTR(number)						\
224 static struct bin_attribute bin_attr_profile##number##_settings = {	\
225 	.attr = { .name = "profile" #number "_settings", .mode = 0440 },	\
226 	.size = KONEPLUS_SIZE_PROFILE_SETTINGS,				\
227 	.read = koneplus_sysfs_read_profilex_settings,			\
228 	.private = &profile_numbers[number-1],				\
229 };									\
230 static struct bin_attribute bin_attr_profile##number##_buttons = {	\
231 	.attr = { .name = "profile" #number "_buttons", .mode = 0440 },	\
232 	.size = KONEPLUS_SIZE_PROFILE_BUTTONS,				\
233 	.read = koneplus_sysfs_read_profilex_buttons,			\
234 	.private = &profile_numbers[number-1],				\
235 };
236 PROFILE_ATTR(1);
237 PROFILE_ATTR(2);
238 PROFILE_ATTR(3);
239 PROFILE_ATTR(4);
240 PROFILE_ATTR(5);
241 
242 static ssize_t koneplus_sysfs_show_actual_profile(struct device *dev,
243 		struct device_attribute *attr, char *buf)
244 {
245 	struct koneplus_device *koneplus =
246 			hid_get_drvdata(dev_get_drvdata(dev->parent->parent));
247 	return snprintf(buf, PAGE_SIZE, "%d\n", koneplus->actual_profile);
248 }
249 
250 static ssize_t koneplus_sysfs_set_actual_profile(struct device *dev,
251 		struct device_attribute *attr, char const *buf, size_t size)
252 {
253 	struct koneplus_device *koneplus;
254 	struct usb_device *usb_dev;
255 	unsigned long profile;
256 	int retval;
257 	struct koneplus_roccat_report roccat_report;
258 
259 	dev = dev->parent->parent;
260 	koneplus = hid_get_drvdata(dev_get_drvdata(dev));
261 	usb_dev = interface_to_usbdev(to_usb_interface(dev));
262 
263 	retval = kstrtoul(buf, 10, &profile);
264 	if (retval)
265 		return retval;
266 
267 	if (profile > 4)
268 		return -EINVAL;
269 
270 	mutex_lock(&koneplus->koneplus_lock);
271 
272 	retval = koneplus_set_actual_profile(usb_dev, profile);
273 	if (retval) {
274 		mutex_unlock(&koneplus->koneplus_lock);
275 		return retval;
276 	}
277 
278 	koneplus_profile_activated(koneplus, profile);
279 
280 	roccat_report.type = KONEPLUS_MOUSE_REPORT_BUTTON_TYPE_PROFILE;
281 	roccat_report.data1 = profile + 1;
282 	roccat_report.data2 = 0;
283 	roccat_report.profile = profile + 1;
284 	roccat_report_event(koneplus->chrdev_minor,
285 			(uint8_t const *)&roccat_report);
286 
287 	mutex_unlock(&koneplus->koneplus_lock);
288 
289 	return size;
290 }
291 static DEVICE_ATTR(actual_profile, 0660,
292 		   koneplus_sysfs_show_actual_profile,
293 		   koneplus_sysfs_set_actual_profile);
294 static DEVICE_ATTR(startup_profile, 0660,
295 		   koneplus_sysfs_show_actual_profile,
296 		   koneplus_sysfs_set_actual_profile);
297 
298 static ssize_t koneplus_sysfs_show_firmware_version(struct device *dev,
299 		struct device_attribute *attr, char *buf)
300 {
301 	struct koneplus_device *koneplus;
302 	struct usb_device *usb_dev;
303 	struct koneplus_info info;
304 
305 	dev = dev->parent->parent;
306 	koneplus = hid_get_drvdata(dev_get_drvdata(dev));
307 	usb_dev = interface_to_usbdev(to_usb_interface(dev));
308 
309 	mutex_lock(&koneplus->koneplus_lock);
310 	roccat_common2_receive(usb_dev, KONEPLUS_COMMAND_INFO,
311 			&info, KONEPLUS_SIZE_INFO);
312 	mutex_unlock(&koneplus->koneplus_lock);
313 
314 	return snprintf(buf, PAGE_SIZE, "%d\n", info.firmware_version);
315 }
316 static DEVICE_ATTR(firmware_version, 0440,
317 		   koneplus_sysfs_show_firmware_version, NULL);
318 
319 static struct attribute *koneplus_attrs[] = {
320 	&dev_attr_actual_profile.attr,
321 	&dev_attr_startup_profile.attr,
322 	&dev_attr_firmware_version.attr,
323 	NULL,
324 };
325 
326 static struct bin_attribute *koneplus_bin_attributes[] = {
327 	&bin_attr_control,
328 	&bin_attr_talk,
329 	&bin_attr_macro,
330 	&bin_attr_tcu_image,
331 	&bin_attr_info,
332 	&bin_attr_sensor,
333 	&bin_attr_tcu,
334 	&bin_attr_profile_settings,
335 	&bin_attr_profile_buttons,
336 	&bin_attr_profile1_settings,
337 	&bin_attr_profile2_settings,
338 	&bin_attr_profile3_settings,
339 	&bin_attr_profile4_settings,
340 	&bin_attr_profile5_settings,
341 	&bin_attr_profile1_buttons,
342 	&bin_attr_profile2_buttons,
343 	&bin_attr_profile3_buttons,
344 	&bin_attr_profile4_buttons,
345 	&bin_attr_profile5_buttons,
346 	NULL,
347 };
348 
349 static const struct attribute_group koneplus_group = {
350 	.attrs = koneplus_attrs,
351 	.bin_attrs = koneplus_bin_attributes,
352 };
353 
354 static const struct attribute_group *koneplus_groups[] = {
355 	&koneplus_group,
356 	NULL,
357 };
358 
359 static int koneplus_init_koneplus_device_struct(struct usb_device *usb_dev,
360 		struct koneplus_device *koneplus)
361 {
362 	int retval;
363 
364 	mutex_init(&koneplus->koneplus_lock);
365 
366 	retval = koneplus_get_actual_profile(usb_dev);
367 	if (retval < 0)
368 		return retval;
369 	koneplus_profile_activated(koneplus, retval);
370 
371 	return 0;
372 }
373 
374 static int koneplus_init_specials(struct hid_device *hdev)
375 {
376 	struct usb_interface *intf = to_usb_interface(hdev->dev.parent);
377 	struct usb_device *usb_dev = interface_to_usbdev(intf);
378 	struct koneplus_device *koneplus;
379 	int retval;
380 
381 	if (intf->cur_altsetting->desc.bInterfaceProtocol
382 			== USB_INTERFACE_PROTOCOL_MOUSE) {
383 
384 		koneplus = kzalloc(sizeof(*koneplus), GFP_KERNEL);
385 		if (!koneplus) {
386 			hid_err(hdev, "can't alloc device descriptor\n");
387 			return -ENOMEM;
388 		}
389 		hid_set_drvdata(hdev, koneplus);
390 
391 		retval = koneplus_init_koneplus_device_struct(usb_dev, koneplus);
392 		if (retval) {
393 			hid_err(hdev, "couldn't init struct koneplus_device\n");
394 			goto exit_free;
395 		}
396 
397 		retval = roccat_connect(koneplus_class, hdev,
398 				sizeof(struct koneplus_roccat_report));
399 		if (retval < 0) {
400 			hid_err(hdev, "couldn't init char dev\n");
401 		} else {
402 			koneplus->chrdev_minor = retval;
403 			koneplus->roccat_claimed = 1;
404 		}
405 	} else {
406 		hid_set_drvdata(hdev, NULL);
407 	}
408 
409 	return 0;
410 exit_free:
411 	kfree(koneplus);
412 	return retval;
413 }
414 
415 static void koneplus_remove_specials(struct hid_device *hdev)
416 {
417 	struct usb_interface *intf = to_usb_interface(hdev->dev.parent);
418 	struct koneplus_device *koneplus;
419 
420 	if (intf->cur_altsetting->desc.bInterfaceProtocol
421 			== USB_INTERFACE_PROTOCOL_MOUSE) {
422 		koneplus = hid_get_drvdata(hdev);
423 		if (koneplus->roccat_claimed)
424 			roccat_disconnect(koneplus->chrdev_minor);
425 		kfree(koneplus);
426 	}
427 }
428 
429 static int koneplus_probe(struct hid_device *hdev,
430 		const struct hid_device_id *id)
431 {
432 	int retval;
433 
434 	retval = hid_parse(hdev);
435 	if (retval) {
436 		hid_err(hdev, "parse failed\n");
437 		goto exit;
438 	}
439 
440 	retval = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
441 	if (retval) {
442 		hid_err(hdev, "hw start failed\n");
443 		goto exit;
444 	}
445 
446 	retval = koneplus_init_specials(hdev);
447 	if (retval) {
448 		hid_err(hdev, "couldn't install mouse\n");
449 		goto exit_stop;
450 	}
451 
452 	return 0;
453 
454 exit_stop:
455 	hid_hw_stop(hdev);
456 exit:
457 	return retval;
458 }
459 
460 static void koneplus_remove(struct hid_device *hdev)
461 {
462 	koneplus_remove_specials(hdev);
463 	hid_hw_stop(hdev);
464 }
465 
466 static void koneplus_keep_values_up_to_date(struct koneplus_device *koneplus,
467 		u8 const *data)
468 {
469 	struct koneplus_mouse_report_button const *button_report;
470 
471 	switch (data[0]) {
472 	case KONEPLUS_MOUSE_REPORT_NUMBER_BUTTON:
473 		button_report = (struct koneplus_mouse_report_button const *)data;
474 		switch (button_report->type) {
475 		case KONEPLUS_MOUSE_REPORT_BUTTON_TYPE_PROFILE:
476 			koneplus_profile_activated(koneplus, button_report->data1 - 1);
477 			break;
478 		}
479 		break;
480 	}
481 }
482 
483 static void koneplus_report_to_chrdev(struct koneplus_device const *koneplus,
484 		u8 const *data)
485 {
486 	struct koneplus_roccat_report roccat_report;
487 	struct koneplus_mouse_report_button const *button_report;
488 
489 	if (data[0] != KONEPLUS_MOUSE_REPORT_NUMBER_BUTTON)
490 		return;
491 
492 	button_report = (struct koneplus_mouse_report_button const *)data;
493 
494 	if ((button_report->type == KONEPLUS_MOUSE_REPORT_BUTTON_TYPE_QUICKLAUNCH ||
495 			button_report->type == KONEPLUS_MOUSE_REPORT_BUTTON_TYPE_TIMER) &&
496 			button_report->data2 != KONEPLUS_MOUSE_REPORT_BUTTON_ACTION_PRESS)
497 		return;
498 
499 	roccat_report.type = button_report->type;
500 	roccat_report.data1 = button_report->data1;
501 	roccat_report.data2 = button_report->data2;
502 	roccat_report.profile = koneplus->actual_profile + 1;
503 	roccat_report_event(koneplus->chrdev_minor,
504 			(uint8_t const *)&roccat_report);
505 }
506 
507 static int koneplus_raw_event(struct hid_device *hdev,
508 		struct hid_report *report, u8 *data, int size)
509 {
510 	struct usb_interface *intf = to_usb_interface(hdev->dev.parent);
511 	struct koneplus_device *koneplus = hid_get_drvdata(hdev);
512 
513 	if (intf->cur_altsetting->desc.bInterfaceProtocol
514 			!= USB_INTERFACE_PROTOCOL_MOUSE)
515 		return 0;
516 
517 	if (koneplus == NULL)
518 		return 0;
519 
520 	koneplus_keep_values_up_to_date(koneplus, data);
521 
522 	if (koneplus->roccat_claimed)
523 		koneplus_report_to_chrdev(koneplus, data);
524 
525 	return 0;
526 }
527 
528 static const struct hid_device_id koneplus_devices[] = {
529 	{ HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_KONEPLUS) },
530 	{ HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_KONEXTD) },
531 	{ }
532 };
533 
534 MODULE_DEVICE_TABLE(hid, koneplus_devices);
535 
536 static struct hid_driver koneplus_driver = {
537 		.name = "koneplus",
538 		.id_table = koneplus_devices,
539 		.probe = koneplus_probe,
540 		.remove = koneplus_remove,
541 		.raw_event = koneplus_raw_event
542 };
543 
544 static int __init koneplus_init(void)
545 {
546 	int retval;
547 
548 	/* class name has to be same as driver name */
549 	koneplus_class = class_create(THIS_MODULE, "koneplus");
550 	if (IS_ERR(koneplus_class))
551 		return PTR_ERR(koneplus_class);
552 	koneplus_class->dev_groups = koneplus_groups;
553 
554 	retval = hid_register_driver(&koneplus_driver);
555 	if (retval)
556 		class_destroy(koneplus_class);
557 	return retval;
558 }
559 
560 static void __exit koneplus_exit(void)
561 {
562 	hid_unregister_driver(&koneplus_driver);
563 	class_destroy(koneplus_class);
564 }
565 
566 module_init(koneplus_init);
567 module_exit(koneplus_exit);
568 
569 MODULE_AUTHOR("Stefan Achatz");
570 MODULE_DESCRIPTION("USB Roccat Kone[+]/XTD driver");
571 MODULE_LICENSE("GPL v2");
572