summaryrefslogtreecommitdiff
path: root/drivers/hid/hid-roccat-pyra.c
blob: 1a07e07d99a06c8972a2d80b8fefa8aa4f4b3848 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
/*
 * Roccat Pyra driver for Linux
 *
 * Copyright (c) 2010 Stefan Achatz <erazor_de@users.sourceforge.net>
 */

/*
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the Free
 * Software Foundation; either version 2 of the License, or (at your option)
 * any later version.
 */

/*
 * Roccat Pyra is a mobile gamer mouse which comes in wired and wireless
 * variant. Wireless variant is not tested.
 * Userland tools can be found at http://sourceforge.net/projects/roccat
 */

#include <linux/device.h>
#include <linux/input.h>
#include <linux/hid.h>
#include <linux/module.h>
#include <linux/slab.h>
#include <linux/hid-roccat.h>
#include "hid-ids.h"
#include "hid-roccat-common.h"
#include "hid-roccat-pyra.h"

static uint profile_numbers[5] = {0, 1, 2, 3, 4};

/* pyra_class is used for creating sysfs attributes via roccat char device */
static struct class *pyra_class;

static void profile_activated(struct pyra_device *pyra,
		unsigned int new_profile)
{
	pyra->actual_profile = new_profile;
	pyra->actual_cpi = pyra->profile_settings[pyra->actual_profile].y_cpi;
}

static int pyra_send_control(struct usb_device *usb_dev, int value,
		enum pyra_control_requests request)
{
	struct roccat_common2_control control;

	if ((request == PYRA_CONTROL_REQUEST_PROFILE_SETTINGS ||
			request == PYRA_CONTROL_REQUEST_PROFILE_BUTTONS) &&
			(value < 0 || value > 4))
		return -EINVAL;

	control.command = ROCCAT_COMMON_COMMAND_CONTROL;
	control.value = value;
	control.request = request;

	return roccat_common2_send(usb_dev, ROCCAT_COMMON_COMMAND_CONTROL,
			&control, sizeof(struct roccat_common2_control));
}

static int pyra_get_profile_settings(struct usb_device *usb_dev,
		struct pyra_profile_settings *buf, int number)
{
	int retval;
	retval = pyra_send_control(usb_dev, number,
			PYRA_CONTROL_REQUEST_PROFILE_SETTINGS);
	if (retval)
		return retval;
	return roccat_common2_receive(usb_dev, PYRA_COMMAND_PROFILE_SETTINGS,
			buf, PYRA_SIZE_PROFILE_SETTINGS);
}

static int pyra_get_settings(struct usb_device *usb_dev,
		struct pyra_settings *buf)
{
	return roccat_common2_receive(usb_dev, PYRA_COMMAND_SETTINGS,
			buf, PYRA_SIZE_SETTINGS);
}

static int pyra_set_settings(struct usb_device *usb_dev,
		struct pyra_settings const *settings)
{
	return roccat_common2_send_with_status(usb_dev,
			PYRA_COMMAND_SETTINGS, settings,
			PYRA_SIZE_SETTINGS);
}

static ssize_t pyra_sysfs_read(struct file *fp, struct kobject *kobj,
		char *buf, loff_t off, size_t count,
		size_t real_size, uint command)
{
	struct device *dev =
			container_of(kobj, struct device, kobj)->parent->parent;
	struct pyra_device *pyra = hid_get_drvdata(dev_get_drvdata(dev));
	struct usb_device *usb_dev = interface_to_usbdev(to_usb_interface(dev));
	int retval;

	if (off >= real_size)
		return 0;

	if (off != 0 || count != real_size)
		return -EINVAL;

	mutex_lock(&pyra->pyra_lock);
	retval = roccat_common2_receive(usb_dev, command, buf, real_size);
	mutex_unlock(&pyra->pyra_lock);

	if (retval)
		return retval;

	return real_size;
}

static ssize_t pyra_sysfs_write(struct file *fp, struct kobject *kobj,
		void const *buf, loff_t off, size_t count,
		size_t real_size, uint command)
{
	struct device *dev =
			container_of(kobj, struct device, kobj)->parent->parent;
	struct pyra_device *pyra = hid_get_drvdata(dev_get_drvdata(dev));
	struct usb_device *usb_dev = interface_to_usbdev(to_usb_interface(dev));
	int retval;

	if (off != 0 || count != real_size)
		return -EINVAL;

	mutex_lock(&pyra->pyra_lock);
	retval = roccat_common2_send_with_status(usb_dev, command, (void *)buf, real_size);
	mutex_unlock(&pyra->pyra_lock);

	if (retval)
		return retval;

	return real_size;
}

#define PYRA_SYSFS_W(thingy, THINGY) \
static ssize_t pyra_sysfs_write_ ## thingy(struct file *fp, \
		struct kobject *kobj, struct bin_attribute *attr, char *buf, \
		loff_t off, size_t count) \
{ \
	return pyra_sysfs_write(fp, kobj, buf, off, count, \
			PYRA_SIZE_ ## THINGY, PYRA_COMMAND_ ## THINGY); \
}

#define PYRA_SYSFS_R(thingy, THINGY) \
static ssize_t pyra_sysfs_read_ ## thingy(struct file *fp, \
		struct kobject *kobj, struct bin_attribute *attr, char *buf, \
		loff_t off, size_t count) \
{ \
	return pyra_sysfs_read(fp, kobj, buf, off, count, \
			PYRA_SIZE_ ## THINGY, PYRA_COMMAND_ ## THINGY); \
}

#define PYRA_SYSFS_RW(thingy, THINGY) \
PYRA_SYSFS_W(thingy, THINGY) \
PYRA_SYSFS_R(thingy, THINGY)

#define PYRA_BIN_ATTRIBUTE_RW(thingy, THINGY) \
PYRA_SYSFS_RW(thingy, THINGY); \
static struct bin_attribute bin_attr_##thingy = { \
	.attr = { .name = #thingy, .mode = 0660 }, \
	.size = PYRA_SIZE_ ## THINGY, \
	.read = pyra_sysfs_read_ ## thingy, \
	.write = pyra_sysfs_write_ ## thingy \
}

#define PYRA_BIN_ATTRIBUTE_R(thingy, THINGY) \
PYRA_SYSFS_R(thingy, THINGY); \
static struct bin_attribute bin_attr_##thingy = { \
	.attr = { .name = #thingy, .mode = 0440 }, \
	.size = PYRA_SIZE_ ## THINGY, \
	.read = pyra_sysfs_read_ ## thingy, \
}

#define PYRA_BIN_ATTRIBUTE_W(thingy, THINGY) \
PYRA_SYSFS_W(thingy, THINGY); \
static struct bin_attribute bin_attr_##thingy = { \
	.attr = { .name = #thingy, .mode = 0220 }, \
	.size = PYRA_SIZE_ ## THINGY, \
	.write = pyra_sysfs_write_ ## thingy \
}

PYRA_BIN_ATTRIBUTE_W(control, CONTROL);
PYRA_BIN_ATTRIBUTE_RW(info, INFO);
PYRA_BIN_ATTRIBUTE_RW(profile_settings, PROFILE_SETTINGS);
PYRA_BIN_ATTRIBUTE_RW(profile_buttons, PROFILE_BUTTONS);

static ssize_t pyra_sysfs_read_profilex_settings(struct file *fp,
		struct kobject *kobj, struct bin_attribute *attr, char *buf,
		loff_t off, size_t count)
{
	struct device *dev =
			container_of(kobj, struct device, kobj)->parent->parent;
	struct usb_device *usb_dev = interface_to_usbdev(to_usb_interface(dev));
	ssize_t retval;

	retval = pyra_send_control(usb_dev, *(uint *)(attr->private),
			PYRA_CONTROL_REQUEST_PROFILE_SETTINGS);
	if (retval)
		return retval;

	return pyra_sysfs_read(fp, kobj, buf, off, count,
			PYRA_SIZE_PROFILE_SETTINGS,
			PYRA_COMMAND_PROFILE_SETTINGS);
}

static ssize_t pyra_sysfs_read_profilex_buttons(struct file *fp,
		struct kobject *kobj, struct bin_attribute *attr, char *buf,
		loff_t off, size_t count)
{
	struct device *dev =
			container_of(kobj, struct device, kobj)->parent->parent;
	struct usb_device *usb_dev = interface_to_usbdev(to_usb_interface(dev));
	ssize_t retval;

	retval = pyra_send_control(usb_dev, *(uint *)(attr->private),
			PYRA_CONTROL_REQUEST_PROFILE_BUTTONS);
	if (retval)
		return retval;

	return pyra_sysfs_read(fp, kobj, buf, off, count,
			PYRA_SIZE_PROFILE_BUTTONS,
			PYRA_COMMAND_PROFILE_BUTTONS);
}

#define PROFILE_ATTR(number)						\
static struct bin_attribute bin_attr_profile##number##_settings = {	\
	.attr = { .name = "profile" #number "_settings", .mode = 0440 },	\
	.size = PYRA_SIZE_PROFILE_SETTINGS,				\
	.read = pyra_sysfs_read_profilex_settings,			\
	.private = &profile_numbers[number-1],				\
};									\
static struct bin_attribute bin_attr_profile##number##_buttons = {	\
	.attr = { .name = "profile" #number "_buttons", .mode = 0440 },	\
	.size = PYRA_SIZE_PROFILE_BUTTONS,				\
	.read = pyra_sysfs_read_profilex_buttons,			\
	.private = &profile_numbers[number-1],				\
};
PROFILE_ATTR(1);
PROFILE_ATTR(2);
PROFILE_ATTR(3);
PROFILE_ATTR(4);
PROFILE_ATTR(5);

static ssize_t pyra_sysfs_write_settings(struct file *fp,
		struct kobject *kobj, struct bin_attribute *attr, char *buf,
		loff_t off, size_t count)
{
	struct device *dev =
			container_of(kobj, struct device, kobj)->parent->parent;
	struct pyra_device *pyra = hid_get_drvdata(dev_get_drvdata(dev));
	struct usb_device *usb_dev = interface_to_usbdev(to_usb_interface(dev));
	int retval = 0;
	struct pyra_roccat_report roccat_report;
	struct pyra_settings const *settings;

	if (off != 0 || count != PYRA_SIZE_SETTINGS)
		return -EINVAL;

	mutex_lock(&pyra->pyra_lock);

	settings = (struct pyra_settings const *)buf;

	retval = pyra_set_settings(usb_dev, settings);
	if (retval) {
		mutex_unlock(&pyra->pyra_lock);
		return retval;
	}

	profile_activated(pyra, settings->startup_profile);

	roccat_report.type = PYRA_MOUSE_EVENT_BUTTON_TYPE_PROFILE_2;
	roccat_report.value = settings->startup_profile + 1;
	roccat_report.key = 0;
	roccat_report_event(pyra->chrdev_minor,
			(uint8_t const *)&roccat_report);

	mutex_unlock(&pyra->pyra_lock);
	return PYRA_SIZE_SETTINGS;
}

PYRA_SYSFS_R(settings, SETTINGS);
static struct bin_attribute bin_attr_settings =
	__BIN_ATTR(settings, (S_IWUSR | S_IRUGO),
		   pyra_sysfs_read_settings, pyra_sysfs_write_settings,
		   PYRA_SIZE_SETTINGS);

static ssize_t pyra_sysfs_show_actual_cpi(struct device *dev,
		struct device_attribute *attr, char *buf)
{
	struct pyra_device *pyra =
			hid_get_drvdata(dev_get_drvdata(dev->parent->parent));
	return snprintf(buf, PAGE_SIZE, "%d\n", pyra->actual_cpi);
}
static DEVICE_ATTR(actual_cpi, 0440, pyra_sysfs_show_actual_cpi, NULL);

static ssize_t pyra_sysfs_show_actual_profile(struct device *dev,
		struct device_attribute *attr, char *buf)
{
	struct pyra_device *pyra =
			hid_get_drvdata(dev_get_drvdata(dev->parent->parent));
	struct usb_device *usb_dev = interface_to_usbdev(to_usb_interface(dev));
	struct pyra_settings settings;

	mutex_lock(&pyra->pyra_lock);
	roccat_common2_receive(usb_dev, PYRA_COMMAND_SETTINGS,
			&settings, PYRA_SIZE_SETTINGS);
	mutex_unlock(&pyra->pyra_lock);

	return snprintf(buf, PAGE_SIZE, "%d\n", settings.startup_profile);
}
static DEVICE_ATTR(actual_profile, 0440, pyra_sysfs_show_actual_profile, NULL);
static DEVICE_ATTR(startup_profile, 0440, pyra_sysfs_show_actual_profile, NULL);

static ssize_t pyra_sysfs_show_firmware_version(struct device *dev,
		struct device_attribute *attr, char *buf)
{
	struct pyra_device *pyra;
	struct usb_device *usb_dev;
	struct pyra_info info;

	dev = dev->parent->parent;
	pyra = hid_get_drvdata(dev_get_drvdata(dev));
	usb_dev = interface_to_usbdev(to_usb_interface(dev));

	mutex_lock(&pyra->pyra_lock);
	roccat_common2_receive(usb_dev, PYRA_COMMAND_INFO,
			&info, PYRA_SIZE_INFO);
	mutex_unlock(&pyra->pyra_lock);

	return snprintf(buf, PAGE_SIZE, "%d\n", info.firmware_version);
}
static DEVICE_ATTR(firmware_version, 0440, pyra_sysfs_show_firmware_version,
		   NULL);

static struct attribute *pyra_attrs[] = {
	&dev_attr_actual_cpi.attr,
	&dev_attr_actual_profile.attr,
	&dev_attr_firmware_version.attr,
	&dev_attr_startup_profile.attr,
	NULL,
};

static struct bin_attribute *pyra_bin_attributes[] = {
	&bin_attr_control,
	&bin_attr_info,
	&bin_attr_profile_settings,
	&bin_attr_profile_buttons,
	&bin_attr_settings,
	&bin_attr_profile1_settings,
	&bin_attr_profile2_settings,
	&bin_attr_profile3_settings,
	&bin_attr_profile4_settings,
	&bin_attr_profile5_settings,
	&bin_attr_profile1_buttons,
	&bin_attr_profile2_buttons,
	&bin_attr_profile3_buttons,
	&bin_attr_profile4_buttons,
	&bin_attr_profile5_buttons,
	NULL,
};

static const struct attribute_group pyra_group = {
	.attrs = pyra_attrs,
	.bin_attrs = pyra_bin_attributes,
};

static const struct attribute_group *pyra_groups[] = {
	&pyra_group,
	NULL,
};

static int pyra_init_pyra_device_struct(struct usb_device *usb_dev,
		struct pyra_device *pyra)
{
	struct pyra_settings settings;
	int retval, i;

	mutex_init(&pyra->pyra_lock);

	retval = pyra_get_settings(usb_dev, &settings);
	if (retval)
		return retval;

	for (i = 0; i < 5; ++i) {
		retval = pyra_get_profile_settings(usb_dev,
				&pyra->profile_settings[i], i);
		if (retval)
			return retval;
	}

	profile_activated(pyra, settings.startup_profile);

	return 0;
}

static int pyra_init_specials(struct hid_device *hdev)
{
	struct usb_interface *intf = to_usb_interface(hdev->dev.parent);
	struct usb_device *usb_dev = interface_to_usbdev(intf);
	struct pyra_device *pyra;
	int retval;

	if (intf->cur_altsetting->desc.bInterfaceProtocol
			== USB_INTERFACE_PROTOCOL_MOUSE) {

		pyra = kzalloc(sizeof(*pyra), GFP_KERNEL);
		if (!pyra) {
			hid_err(hdev, "can't alloc device descriptor\n");
			return -ENOMEM;
		}
		hid_set_drvdata(hdev, pyra);

		retval = pyra_init_pyra_device_struct(usb_dev, pyra);
		if (retval) {
			hid_err(hdev, "couldn't init struct pyra_device\n");
			goto exit_free;
		}

		retval = roccat_connect(pyra_class, hdev,
				sizeof(struct pyra_roccat_report));
		if (retval < 0) {
			hid_err(hdev, "couldn't init char dev\n");
		} else {
			pyra->chrdev_minor = retval;
			pyra->roccat_claimed = 1;
		}
	} else {
		hid_set_drvdata(hdev, NULL);
	}

	return 0;
exit_free:
	kfree(pyra);
	return retval;
}

static void pyra_remove_specials(struct hid_device *hdev)
{
	struct usb_interface *intf = to_usb_interface(hdev->dev.parent);
	struct pyra_device *pyra;

	if (intf->cur_altsetting->desc.bInterfaceProtocol
			== USB_INTERFACE_PROTOCOL_MOUSE) {
		pyra = hid_get_drvdata(hdev);
		if (pyra->roccat_claimed)
			roccat_disconnect(pyra->chrdev_minor);
		kfree(hid_get_drvdata(hdev));
	}
}

static int pyra_probe(struct hid_device *hdev, const struct hid_device_id *id)
{
	int retval;

	retval = hid_parse(hdev);
	if (retval) {
		hid_err(hdev, "parse failed\n");
		goto exit;
	}

	retval = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
	if (retval) {
		hid_err(hdev, "hw start failed\n");
		goto exit;
	}

	retval = pyra_init_specials(hdev);
	if (retval) {
		hid_err(hdev, "couldn't install mouse\n");
		goto exit_stop;
	}
	return 0;

exit_stop:
	hid_hw_stop(hdev);
exit:
	return retval;
}

static void pyra_remove(struct hid_device *hdev)
{
	pyra_remove_specials(hdev);
	hid_hw_stop(hdev);
}

static void pyra_keep_values_up_to_date(struct pyra_device *pyra,
		u8 const *data)
{
	struct pyra_mouse_event_button const *button_event;

	switch (data[0]) {
	case PYRA_MOUSE_REPORT_NUMBER_BUTTON:
		button_event = (struct pyra_mouse_event_button const *)data;
		switch (button_event->type) {
		case PYRA_MOUSE_EVENT_BUTTON_TYPE_PROFILE_2:
			profile_activated(pyra, button_event->data1 - 1);
			break;
		case PYRA_MOUSE_EVENT_BUTTON_TYPE_CPI:
			pyra->actual_cpi = button_event->data1;
			break;
		}
		break;
	}
}

static void pyra_report_to_chrdev(struct pyra_device const *pyra,
		u8 const *data)
{
	struct pyra_roccat_report roccat_report;
	struct pyra_mouse_event_button const *button_event;

	if (data[0] != PYRA_MOUSE_REPORT_NUMBER_BUTTON)
		return;

	button_event = (struct pyra_mouse_event_button const *)data;

	switch (button_event->type) {
	case PYRA_MOUSE_EVENT_BUTTON_TYPE_PROFILE_2:
	case PYRA_MOUSE_EVENT_BUTTON_TYPE_CPI:
		roccat_report.type = button_event->type;
		roccat_report.value = button_event->data1;
		roccat_report.key = 0;
		roccat_report_event(pyra->chrdev_minor,
				(uint8_t const *)&roccat_report);
		break;
	case PYRA_MOUSE_EVENT_BUTTON_TYPE_MACRO:
	case PYRA_MOUSE_EVENT_BUTTON_TYPE_SHORTCUT:
	case PYRA_MOUSE_EVENT_BUTTON_TYPE_QUICKLAUNCH:
		if (button_event->data2 == PYRA_MOUSE_EVENT_BUTTON_PRESS) {
			roccat_report.type = button_event->type;
			roccat_report.key = button_event->data1;
			/*
			 * pyra reports profile numbers with range 1-5.
			 * Keeping this behaviour.
			 */
			roccat_report.value = pyra->actual_profile + 1;
			roccat_report_event(pyra->chrdev_minor,
					(uint8_t const *)&roccat_report);
		}
		break;
	}
}

static int pyra_raw_event(struct hid_device *hdev, struct hid_report *report,
		u8 *data, int size)
{
	struct usb_interface *intf = to_usb_interface(hdev->dev.parent);
	struct pyra_device *pyra = hid_get_drvdata(hdev);

	if (intf->cur_altsetting->desc.bInterfaceProtocol
			!= USB_INTERFACE_PROTOCOL_MOUSE)
		return 0;

	if (pyra == NULL)
		return 0;

	pyra_keep_values_up_to_date(pyra, data);

	if (pyra->roccat_claimed)
		pyra_report_to_chrdev(pyra, data);

	return 0;
}

static const struct hid_device_id pyra_devices[] = {
	{ HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT,
			USB_DEVICE_ID_ROCCAT_PYRA_WIRED) },
	{ HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT,
			USB_DEVICE_ID_ROCCAT_PYRA_WIRELESS) },
	{ }
};

MODULE_DEVICE_TABLE(hid, pyra_devices);

static struct hid_driver pyra_driver = {
		.name = "pyra",
		.id_table = pyra_devices,
		.probe = pyra_probe,
		.remove = pyra_remove,
		.raw_event = pyra_raw_event
};

static int __init pyra_init(void)
{
	int retval;

	/* class name has to be same as driver name */
	pyra_class = class_create(THIS_MODULE, "pyra");
	if (IS_ERR(pyra_class))
		return PTR_ERR(pyra_class);
	pyra_class->dev_groups = pyra_groups;

	retval = hid_register_driver(&pyra_driver);
	if (retval)
		class_destroy(pyra_class);
	return retval;
}

static void __exit pyra_exit(void)
{
	hid_unregister_driver(&pyra_driver);
	class_destroy(pyra_class);
}

module_init(pyra_init);
module_exit(pyra_exit);

MODULE_AUTHOR("Stefan Achatz");
MODULE_DESCRIPTION("USB Roccat Pyra driver");
MODULE_LICENSE("GPL v2");