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1 | /* | |
2 | * Roccat Arvo driver for Linux | |
3 | * | |
4 | * Copyright (c) 2011 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 Arvo is a gamer keyboard with 5 macro keys that can be configured in | |
16 | * 5 profiles. | |
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-arvo.h" | |
28 | ||
29 | static struct class *arvo_class; | |
30 | ||
31 | static ssize_t arvo_sysfs_show_mode_key(struct device *dev, | |
32 | struct device_attribute *attr, char *buf) | |
33 | { | |
34 | struct arvo_device *arvo = | |
35 | hid_get_drvdata(dev_get_drvdata(dev->parent->parent)); | |
36 | struct usb_device *usb_dev = | |
37 | interface_to_usbdev(to_usb_interface(dev->parent->parent)); | |
38 | struct arvo_mode_key temp_buf; | |
39 | int retval; | |
40 | ||
41 | mutex_lock(&arvo->arvo_lock); | |
42 | retval = roccat_common2_receive(usb_dev, ARVO_COMMAND_MODE_KEY, | |
43 | &temp_buf, sizeof(struct arvo_mode_key)); | |
44 | mutex_unlock(&arvo->arvo_lock); | |
45 | if (retval) | |
46 | return retval; | |
47 | ||
48 | return snprintf(buf, PAGE_SIZE, "%d\n", temp_buf.state); | |
49 | } | |
50 | ||
51 | static ssize_t arvo_sysfs_set_mode_key(struct device *dev, | |
52 | struct device_attribute *attr, char const *buf, size_t size) | |
53 | { | |
54 | struct arvo_device *arvo = | |
55 | hid_get_drvdata(dev_get_drvdata(dev->parent->parent)); | |
56 | struct usb_device *usb_dev = | |
57 | interface_to_usbdev(to_usb_interface(dev->parent->parent)); | |
58 | struct arvo_mode_key temp_buf; | |
59 | unsigned long state; | |
60 | int retval; | |
61 | ||
62 | retval = strict_strtoul(buf, 10, &state); | |
63 | if (retval) | |
64 | return retval; | |
65 | ||
66 | temp_buf.command = ARVO_COMMAND_MODE_KEY; | |
67 | temp_buf.state = state; | |
68 | ||
69 | mutex_lock(&arvo->arvo_lock); | |
70 | retval = roccat_common2_send(usb_dev, ARVO_COMMAND_MODE_KEY, | |
71 | &temp_buf, sizeof(struct arvo_mode_key)); | |
72 | mutex_unlock(&arvo->arvo_lock); | |
73 | if (retval) | |
74 | return retval; | |
75 | ||
76 | return size; | |
77 | } | |
78 | ||
79 | static ssize_t arvo_sysfs_show_key_mask(struct device *dev, | |
80 | struct device_attribute *attr, char *buf) | |
81 | { | |
82 | struct arvo_device *arvo = | |
83 | hid_get_drvdata(dev_get_drvdata(dev->parent->parent)); | |
84 | struct usb_device *usb_dev = | |
85 | interface_to_usbdev(to_usb_interface(dev->parent->parent)); | |
86 | struct arvo_key_mask temp_buf; | |
87 | int retval; | |
88 | ||
89 | mutex_lock(&arvo->arvo_lock); | |
90 | retval = roccat_common2_receive(usb_dev, ARVO_COMMAND_KEY_MASK, | |
91 | &temp_buf, sizeof(struct arvo_key_mask)); | |
92 | mutex_unlock(&arvo->arvo_lock); | |
93 | if (retval) | |
94 | return retval; | |
95 | ||
96 | return snprintf(buf, PAGE_SIZE, "%d\n", temp_buf.key_mask); | |
97 | } | |
98 | ||
99 | static ssize_t arvo_sysfs_set_key_mask(struct device *dev, | |
100 | struct device_attribute *attr, char const *buf, size_t size) | |
101 | { | |
102 | struct arvo_device *arvo = | |
103 | hid_get_drvdata(dev_get_drvdata(dev->parent->parent)); | |
104 | struct usb_device *usb_dev = | |
105 | interface_to_usbdev(to_usb_interface(dev->parent->parent)); | |
106 | struct arvo_key_mask temp_buf; | |
107 | unsigned long key_mask; | |
108 | int retval; | |
109 | ||
110 | retval = strict_strtoul(buf, 10, &key_mask); | |
111 | if (retval) | |
112 | return retval; | |
113 | ||
114 | temp_buf.command = ARVO_COMMAND_KEY_MASK; | |
115 | temp_buf.key_mask = key_mask; | |
116 | ||
117 | mutex_lock(&arvo->arvo_lock); | |
118 | retval = roccat_common2_send(usb_dev, ARVO_COMMAND_KEY_MASK, | |
119 | &temp_buf, sizeof(struct arvo_key_mask)); | |
120 | mutex_unlock(&arvo->arvo_lock); | |
121 | if (retval) | |
122 | return retval; | |
123 | ||
124 | return size; | |
125 | } | |
126 | ||
127 | /* retval is 1-5 on success, < 0 on error */ | |
128 | static int arvo_get_actual_profile(struct usb_device *usb_dev) | |
129 | { | |
130 | struct arvo_actual_profile temp_buf; | |
131 | int retval; | |
132 | ||
133 | retval = roccat_common2_receive(usb_dev, ARVO_COMMAND_ACTUAL_PROFILE, | |
134 | &temp_buf, sizeof(struct arvo_actual_profile)); | |
135 | ||
136 | if (retval) | |
137 | return retval; | |
138 | ||
139 | return temp_buf.actual_profile; | |
140 | } | |
141 | ||
142 | static ssize_t arvo_sysfs_show_actual_profile(struct device *dev, | |
143 | struct device_attribute *attr, char *buf) | |
144 | { | |
145 | struct arvo_device *arvo = | |
146 | hid_get_drvdata(dev_get_drvdata(dev->parent->parent)); | |
147 | ||
148 | return snprintf(buf, PAGE_SIZE, "%d\n", arvo->actual_profile); | |
149 | } | |
150 | ||
151 | static ssize_t arvo_sysfs_set_actual_profile(struct device *dev, | |
152 | struct device_attribute *attr, char const *buf, size_t size) | |
153 | { | |
154 | struct arvo_device *arvo = | |
155 | hid_get_drvdata(dev_get_drvdata(dev->parent->parent)); | |
156 | struct usb_device *usb_dev = | |
157 | interface_to_usbdev(to_usb_interface(dev->parent->parent)); | |
158 | struct arvo_actual_profile temp_buf; | |
159 | unsigned long profile; | |
160 | int retval; | |
161 | ||
162 | retval = strict_strtoul(buf, 10, &profile); | |
163 | if (retval) | |
164 | return retval; | |
165 | ||
166 | if (profile < 1 || profile > 5) | |
167 | return -EINVAL; | |
168 | ||
169 | temp_buf.command = ARVO_COMMAND_ACTUAL_PROFILE; | |
170 | temp_buf.actual_profile = profile; | |
171 | ||
172 | mutex_lock(&arvo->arvo_lock); | |
173 | retval = roccat_common2_send(usb_dev, ARVO_COMMAND_ACTUAL_PROFILE, | |
174 | &temp_buf, sizeof(struct arvo_actual_profile)); | |
175 | if (!retval) { | |
176 | arvo->actual_profile = profile; | |
177 | retval = size; | |
178 | } | |
179 | mutex_unlock(&arvo->arvo_lock); | |
180 | return retval; | |
181 | } | |
182 | ||
183 | static ssize_t arvo_sysfs_write(struct file *fp, | |
184 | struct kobject *kobj, void const *buf, | |
185 | loff_t off, size_t count, size_t real_size, uint command) | |
186 | { | |
187 | struct device *dev = | |
188 | container_of(kobj, struct device, kobj)->parent->parent; | |
189 | struct arvo_device *arvo = hid_get_drvdata(dev_get_drvdata(dev)); | |
190 | struct usb_device *usb_dev = interface_to_usbdev(to_usb_interface(dev)); | |
191 | int retval; | |
192 | ||
193 | if (off != 0 || count != real_size) | |
194 | return -EINVAL; | |
195 | ||
196 | mutex_lock(&arvo->arvo_lock); | |
197 | retval = roccat_common2_send(usb_dev, command, buf, real_size); | |
198 | mutex_unlock(&arvo->arvo_lock); | |
199 | ||
200 | return (retval ? retval : real_size); | |
201 | } | |
202 | ||
203 | static ssize_t arvo_sysfs_read(struct file *fp, | |
204 | struct kobject *kobj, void *buf, loff_t off, | |
205 | size_t count, size_t real_size, uint command) | |
206 | { | |
207 | struct device *dev = | |
208 | container_of(kobj, struct device, kobj)->parent->parent; | |
209 | struct arvo_device *arvo = hid_get_drvdata(dev_get_drvdata(dev)); | |
210 | struct usb_device *usb_dev = interface_to_usbdev(to_usb_interface(dev)); | |
211 | int retval; | |
212 | ||
213 | if (off >= real_size) | |
214 | return 0; | |
215 | ||
216 | if (off != 0 || count != real_size) | |
217 | return -EINVAL; | |
218 | ||
219 | mutex_lock(&arvo->arvo_lock); | |
220 | retval = roccat_common2_receive(usb_dev, command, buf, real_size); | |
221 | mutex_unlock(&arvo->arvo_lock); | |
222 | ||
223 | return (retval ? retval : real_size); | |
224 | } | |
225 | ||
226 | static ssize_t arvo_sysfs_write_button(struct file *fp, | |
227 | struct kobject *kobj, struct bin_attribute *attr, char *buf, | |
228 | loff_t off, size_t count) | |
229 | { | |
230 | return arvo_sysfs_write(fp, kobj, buf, off, count, | |
231 | sizeof(struct arvo_button), ARVO_COMMAND_BUTTON); | |
232 | } | |
233 | ||
234 | static ssize_t arvo_sysfs_read_info(struct file *fp, | |
235 | struct kobject *kobj, struct bin_attribute *attr, char *buf, | |
236 | loff_t off, size_t count) | |
237 | { | |
238 | return arvo_sysfs_read(fp, kobj, buf, off, count, | |
239 | sizeof(struct arvo_info), ARVO_COMMAND_INFO); | |
240 | } | |
241 | ||
242 | ||
243 | static struct device_attribute arvo_attributes[] = { | |
244 | __ATTR(mode_key, 0660, | |
245 | arvo_sysfs_show_mode_key, arvo_sysfs_set_mode_key), | |
246 | __ATTR(key_mask, 0660, | |
247 | arvo_sysfs_show_key_mask, arvo_sysfs_set_key_mask), | |
248 | __ATTR(actual_profile, 0660, | |
249 | arvo_sysfs_show_actual_profile, | |
250 | arvo_sysfs_set_actual_profile), | |
251 | __ATTR_NULL | |
252 | }; | |
253 | ||
254 | static struct bin_attribute arvo_bin_attributes[] = { | |
255 | { | |
256 | .attr = { .name = "button", .mode = 0220 }, | |
257 | .size = sizeof(struct arvo_button), | |
258 | .write = arvo_sysfs_write_button | |
259 | }, | |
260 | { | |
261 | .attr = { .name = "info", .mode = 0440 }, | |
262 | .size = sizeof(struct arvo_info), | |
263 | .read = arvo_sysfs_read_info | |
264 | }, | |
265 | __ATTR_NULL | |
266 | }; | |
267 | ||
268 | static int arvo_init_arvo_device_struct(struct usb_device *usb_dev, | |
269 | struct arvo_device *arvo) | |
270 | { | |
271 | int retval; | |
272 | ||
273 | mutex_init(&arvo->arvo_lock); | |
274 | ||
275 | retval = arvo_get_actual_profile(usb_dev); | |
276 | if (retval < 0) | |
277 | return retval; | |
278 | arvo->actual_profile = retval; | |
279 | ||
280 | return 0; | |
281 | } | |
282 | ||
283 | static int arvo_init_specials(struct hid_device *hdev) | |
284 | { | |
285 | struct usb_interface *intf = to_usb_interface(hdev->dev.parent); | |
286 | struct usb_device *usb_dev = interface_to_usbdev(intf); | |
287 | struct arvo_device *arvo; | |
288 | int retval; | |
289 | ||
290 | if (intf->cur_altsetting->desc.bInterfaceProtocol | |
291 | == USB_INTERFACE_PROTOCOL_KEYBOARD) { | |
292 | hid_set_drvdata(hdev, NULL); | |
293 | return 0; | |
294 | } | |
295 | ||
296 | arvo = kzalloc(sizeof(*arvo), GFP_KERNEL); | |
297 | if (!arvo) { | |
298 | hid_err(hdev, "can't alloc device descriptor\n"); | |
299 | return -ENOMEM; | |
300 | } | |
301 | hid_set_drvdata(hdev, arvo); | |
302 | ||
303 | retval = arvo_init_arvo_device_struct(usb_dev, arvo); | |
304 | if (retval) { | |
305 | hid_err(hdev, "couldn't init struct arvo_device\n"); | |
306 | goto exit_free; | |
307 | } | |
308 | ||
309 | retval = roccat_connect(arvo_class, hdev, | |
310 | sizeof(struct arvo_roccat_report)); | |
311 | if (retval < 0) { | |
312 | hid_err(hdev, "couldn't init char dev\n"); | |
313 | } else { | |
314 | arvo->chrdev_minor = retval; | |
315 | arvo->roccat_claimed = 1; | |
316 | } | |
317 | ||
318 | return 0; | |
319 | exit_free: | |
320 | kfree(arvo); | |
321 | return retval; | |
322 | } | |
323 | ||
324 | static void arvo_remove_specials(struct hid_device *hdev) | |
325 | { | |
326 | struct usb_interface *intf = to_usb_interface(hdev->dev.parent); | |
327 | struct arvo_device *arvo; | |
328 | ||
329 | if (intf->cur_altsetting->desc.bInterfaceProtocol | |
330 | == USB_INTERFACE_PROTOCOL_KEYBOARD) | |
331 | return; | |
332 | ||
333 | arvo = hid_get_drvdata(hdev); | |
334 | if (arvo->roccat_claimed) | |
335 | roccat_disconnect(arvo->chrdev_minor); | |
336 | kfree(arvo); | |
337 | } | |
338 | ||
339 | static int arvo_probe(struct hid_device *hdev, | |
340 | const struct hid_device_id *id) | |
341 | { | |
342 | int retval; | |
343 | ||
344 | retval = hid_parse(hdev); | |
345 | if (retval) { | |
346 | hid_err(hdev, "parse failed\n"); | |
347 | goto exit; | |
348 | } | |
349 | ||
350 | retval = hid_hw_start(hdev, HID_CONNECT_DEFAULT); | |
351 | if (retval) { | |
352 | hid_err(hdev, "hw start failed\n"); | |
353 | goto exit; | |
354 | } | |
355 | ||
356 | retval = arvo_init_specials(hdev); | |
357 | if (retval) { | |
358 | hid_err(hdev, "couldn't install keyboard\n"); | |
359 | goto exit_stop; | |
360 | } | |
361 | ||
362 | return 0; | |
363 | ||
364 | exit_stop: | |
365 | hid_hw_stop(hdev); | |
366 | exit: | |
367 | return retval; | |
368 | } | |
369 | ||
370 | static void arvo_remove(struct hid_device *hdev) | |
371 | { | |
372 | arvo_remove_specials(hdev); | |
373 | hid_hw_stop(hdev); | |
374 | } | |
375 | ||
376 | static void arvo_report_to_chrdev(struct arvo_device const *arvo, | |
377 | u8 const *data) | |
378 | { | |
379 | struct arvo_special_report const *special_report; | |
380 | struct arvo_roccat_report roccat_report; | |
381 | ||
382 | special_report = (struct arvo_special_report const *)data; | |
383 | ||
384 | roccat_report.profile = arvo->actual_profile; | |
385 | roccat_report.button = special_report->event & | |
386 | ARVO_SPECIAL_REPORT_EVENT_MASK_BUTTON; | |
387 | if ((special_report->event & ARVO_SPECIAL_REPORT_EVENT_MASK_ACTION) == | |
388 | ARVO_SPECIAL_REPORT_EVENT_ACTION_PRESS) | |
389 | roccat_report.action = ARVO_ROCCAT_REPORT_ACTION_PRESS; | |
390 | else | |
391 | roccat_report.action = ARVO_ROCCAT_REPORT_ACTION_RELEASE; | |
392 | ||
393 | roccat_report_event(arvo->chrdev_minor, | |
394 | (uint8_t const *)&roccat_report); | |
395 | } | |
396 | ||
397 | static int arvo_raw_event(struct hid_device *hdev, | |
398 | struct hid_report *report, u8 *data, int size) | |
399 | { | |
400 | struct arvo_device *arvo = hid_get_drvdata(hdev); | |
401 | ||
402 | if (size != 3) | |
403 | return 0; | |
404 | ||
405 | if (arvo && arvo->roccat_claimed) | |
406 | arvo_report_to_chrdev(arvo, data); | |
407 | ||
408 | return 0; | |
409 | } | |
410 | ||
411 | static const struct hid_device_id arvo_devices[] = { | |
412 | { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_ARVO) }, | |
413 | { } | |
414 | }; | |
415 | ||
416 | MODULE_DEVICE_TABLE(hid, arvo_devices); | |
417 | ||
418 | static struct hid_driver arvo_driver = { | |
419 | .name = "arvo", | |
420 | .id_table = arvo_devices, | |
421 | .probe = arvo_probe, | |
422 | .remove = arvo_remove, | |
423 | .raw_event = arvo_raw_event | |
424 | }; | |
425 | ||
426 | static int __init arvo_init(void) | |
427 | { | |
428 | int retval; | |
429 | ||
430 | arvo_class = class_create(THIS_MODULE, "arvo"); | |
431 | if (IS_ERR(arvo_class)) | |
432 | return PTR_ERR(arvo_class); | |
433 | arvo_class->dev_attrs = arvo_attributes; | |
434 | arvo_class->dev_bin_attrs = arvo_bin_attributes; | |
435 | ||
436 | retval = hid_register_driver(&arvo_driver); | |
437 | if (retval) | |
438 | class_destroy(arvo_class); | |
439 | return retval; | |
440 | } | |
441 | ||
442 | static void __exit arvo_exit(void) | |
443 | { | |
444 | hid_unregister_driver(&arvo_driver); | |
445 | class_destroy(arvo_class); | |
446 | } | |
447 | ||
448 | module_init(arvo_init); | |
449 | module_exit(arvo_exit); | |
450 | ||
451 | MODULE_AUTHOR("Stefan Achatz"); | |
452 | MODULE_DESCRIPTION("USB Roccat Arvo driver"); | |
453 | MODULE_LICENSE("GPL v2"); |