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e68cc603 SA |
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> | |
e68cc603 SA |
22 | #include <linux/module.h> |
23 | #include <linux/slab.h> | |
24 | #include "hid-ids.h" | |
25 | #include "hid-roccat.h" | |
5772f636 | 26 | #include "hid-roccat-common.h" |
e68cc603 SA |
27 | #include "hid-roccat-arvo.h" |
28 | ||
29 | static struct class *arvo_class; | |
30 | ||
e68cc603 SA |
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)); | |
5772f636 | 38 | struct arvo_mode_key temp_buf; |
e68cc603 SA |
39 | int retval; |
40 | ||
e68cc603 | 41 | mutex_lock(&arvo->arvo_lock); |
5772f636 SA |
42 | retval = roccat_common_receive(usb_dev, ARVO_USB_COMMAND_MODE_KEY, |
43 | &temp_buf, sizeof(struct arvo_mode_key)); | |
e68cc603 SA |
44 | mutex_unlock(&arvo->arvo_lock); |
45 | if (retval) | |
5772f636 | 46 | return retval; |
e68cc603 | 47 | |
5772f636 | 48 | return snprintf(buf, PAGE_SIZE, "%d\n", temp_buf.state); |
e68cc603 SA |
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)); | |
5772f636 | 58 | struct arvo_mode_key temp_buf; |
e68cc603 SA |
59 | unsigned long state; |
60 | int retval; | |
61 | ||
e68cc603 SA |
62 | retval = strict_strtoul(buf, 10, &state); |
63 | if (retval) | |
5772f636 | 64 | return retval; |
e68cc603 | 65 | |
5772f636 SA |
66 | temp_buf.command = ARVO_COMMAND_MODE_KEY; |
67 | temp_buf.state = state; | |
e68cc603 SA |
68 | |
69 | mutex_lock(&arvo->arvo_lock); | |
5772f636 SA |
70 | retval = roccat_common_send(usb_dev, ARVO_USB_COMMAND_MODE_KEY, |
71 | &temp_buf, sizeof(struct arvo_mode_key)); | |
e68cc603 SA |
72 | mutex_unlock(&arvo->arvo_lock); |
73 | if (retval) | |
5772f636 | 74 | return retval; |
e68cc603 | 75 | |
5772f636 | 76 | return size; |
e68cc603 SA |
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)); | |
5772f636 | 86 | struct arvo_key_mask temp_buf; |
e68cc603 SA |
87 | int retval; |
88 | ||
e68cc603 | 89 | mutex_lock(&arvo->arvo_lock); |
5772f636 SA |
90 | retval = roccat_common_receive(usb_dev, ARVO_USB_COMMAND_KEY_MASK, |
91 | &temp_buf, sizeof(struct arvo_key_mask)); | |
e68cc603 SA |
92 | mutex_unlock(&arvo->arvo_lock); |
93 | if (retval) | |
5772f636 | 94 | return retval; |
e68cc603 | 95 | |
5772f636 | 96 | return snprintf(buf, PAGE_SIZE, "%d\n", temp_buf.key_mask); |
e68cc603 SA |
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)); | |
5772f636 | 106 | struct arvo_key_mask temp_buf; |
e68cc603 SA |
107 | unsigned long key_mask; |
108 | int retval; | |
109 | ||
e68cc603 SA |
110 | retval = strict_strtoul(buf, 10, &key_mask); |
111 | if (retval) | |
5772f636 | 112 | return retval; |
e68cc603 | 113 | |
5772f636 SA |
114 | temp_buf.command = ARVO_COMMAND_KEY_MASK; |
115 | temp_buf.key_mask = key_mask; | |
e68cc603 SA |
116 | |
117 | mutex_lock(&arvo->arvo_lock); | |
5772f636 SA |
118 | retval = roccat_common_send(usb_dev, ARVO_USB_COMMAND_KEY_MASK, |
119 | &temp_buf, sizeof(struct arvo_key_mask)); | |
e68cc603 SA |
120 | mutex_unlock(&arvo->arvo_lock); |
121 | if (retval) | |
5772f636 | 122 | return retval; |
e68cc603 | 123 | |
5772f636 | 124 | return size; |
e68cc603 SA |
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 | { | |
5772f636 | 130 | struct arvo_actual_profile temp_buf; |
e68cc603 SA |
131 | int retval; |
132 | ||
5772f636 SA |
133 | retval = roccat_common_receive(usb_dev, ARVO_USB_COMMAND_ACTUAL_PROFILE, |
134 | &temp_buf, sizeof(struct arvo_actual_profile)); | |
e68cc603 | 135 | |
5772f636 SA |
136 | if (retval) |
137 | return retval; | |
e68cc603 | 138 | |
5772f636 | 139 | return temp_buf.actual_profile; |
e68cc603 SA |
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)); | |
5772f636 | 158 | struct arvo_actual_profile temp_buf; |
e68cc603 SA |
159 | unsigned long profile; |
160 | int retval; | |
161 | ||
e68cc603 SA |
162 | retval = strict_strtoul(buf, 10, &profile); |
163 | if (retval) | |
5772f636 | 164 | return retval; |
e68cc603 | 165 | |
5772f636 SA |
166 | temp_buf.command = ARVO_COMMAND_ACTUAL_PROFILE; |
167 | temp_buf.actual_profile = profile; | |
e68cc603 SA |
168 | |
169 | mutex_lock(&arvo->arvo_lock); | |
5772f636 SA |
170 | retval = roccat_common_send(usb_dev, ARVO_USB_COMMAND_ACTUAL_PROFILE, |
171 | &temp_buf, sizeof(struct arvo_actual_profile)); | |
e68cc603 SA |
172 | if (!retval) { |
173 | arvo->actual_profile = profile; | |
174 | retval = size; | |
175 | } | |
176 | mutex_unlock(&arvo->arvo_lock); | |
e68cc603 SA |
177 | return retval; |
178 | } | |
179 | ||
180 | static ssize_t arvo_sysfs_write(struct file *fp, | |
181 | struct kobject *kobj, void const *buf, | |
182 | loff_t off, size_t count, size_t real_size, uint command) | |
183 | { | |
184 | struct device *dev = | |
185 | container_of(kobj, struct device, kobj)->parent->parent; | |
186 | struct arvo_device *arvo = hid_get_drvdata(dev_get_drvdata(dev)); | |
187 | struct usb_device *usb_dev = interface_to_usbdev(to_usb_interface(dev)); | |
188 | int retval; | |
189 | ||
190 | if (off != 0 || count != real_size) | |
191 | return -EINVAL; | |
192 | ||
193 | mutex_lock(&arvo->arvo_lock); | |
5772f636 | 194 | retval = roccat_common_send(usb_dev, command, buf, real_size); |
e68cc603 SA |
195 | mutex_unlock(&arvo->arvo_lock); |
196 | ||
197 | return (retval ? retval : real_size); | |
198 | } | |
199 | ||
200 | static ssize_t arvo_sysfs_read(struct file *fp, | |
201 | struct kobject *kobj, void *buf, loff_t off, | |
202 | size_t count, size_t real_size, uint command) | |
203 | { | |
204 | struct device *dev = | |
205 | container_of(kobj, struct device, kobj)->parent->parent; | |
206 | struct arvo_device *arvo = hid_get_drvdata(dev_get_drvdata(dev)); | |
207 | struct usb_device *usb_dev = interface_to_usbdev(to_usb_interface(dev)); | |
208 | int retval; | |
209 | ||
210 | if (off >= real_size) | |
211 | return 0; | |
212 | ||
213 | if (off != 0 || count != real_size) | |
214 | return -EINVAL; | |
215 | ||
216 | mutex_lock(&arvo->arvo_lock); | |
5772f636 | 217 | retval = roccat_common_receive(usb_dev, command, buf, real_size); |
e68cc603 SA |
218 | mutex_unlock(&arvo->arvo_lock); |
219 | ||
220 | return (retval ? retval : real_size); | |
221 | } | |
222 | ||
223 | static ssize_t arvo_sysfs_write_button(struct file *fp, | |
224 | struct kobject *kobj, struct bin_attribute *attr, char *buf, | |
225 | loff_t off, size_t count) | |
226 | { | |
227 | return arvo_sysfs_write(fp, kobj, buf, off, count, | |
228 | sizeof(struct arvo_button), ARVO_USB_COMMAND_BUTTON); | |
229 | } | |
230 | ||
231 | static ssize_t arvo_sysfs_read_info(struct file *fp, | |
232 | struct kobject *kobj, struct bin_attribute *attr, char *buf, | |
233 | loff_t off, size_t count) | |
234 | { | |
235 | return arvo_sysfs_read(fp, kobj, buf, off, count, | |
236 | sizeof(struct arvo_info), ARVO_USB_COMMAND_INFO); | |
237 | } | |
238 | ||
239 | ||
240 | static struct device_attribute arvo_attributes[] = { | |
241 | __ATTR(mode_key, 0660, | |
242 | arvo_sysfs_show_mode_key, arvo_sysfs_set_mode_key), | |
243 | __ATTR(key_mask, 0660, | |
244 | arvo_sysfs_show_key_mask, arvo_sysfs_set_key_mask), | |
245 | __ATTR(actual_profile, 0660, | |
246 | arvo_sysfs_show_actual_profile, | |
247 | arvo_sysfs_set_actual_profile), | |
248 | __ATTR_NULL | |
249 | }; | |
250 | ||
251 | static struct bin_attribute arvo_bin_attributes[] = { | |
252 | { | |
253 | .attr = { .name = "button", .mode = 0220 }, | |
254 | .size = sizeof(struct arvo_button), | |
255 | .write = arvo_sysfs_write_button | |
256 | }, | |
257 | { | |
258 | .attr = { .name = "info", .mode = 0440 }, | |
259 | .size = sizeof(struct arvo_info), | |
260 | .read = arvo_sysfs_read_info | |
261 | }, | |
262 | __ATTR_NULL | |
263 | }; | |
264 | ||
265 | static int arvo_init_arvo_device_struct(struct usb_device *usb_dev, | |
266 | struct arvo_device *arvo) | |
267 | { | |
268 | int retval; | |
269 | ||
270 | mutex_init(&arvo->arvo_lock); | |
271 | ||
272 | retval = arvo_get_actual_profile(usb_dev); | |
273 | if (retval < 0) | |
274 | return retval; | |
275 | arvo->actual_profile = retval; | |
276 | ||
277 | return 0; | |
278 | } | |
279 | ||
280 | static int arvo_init_specials(struct hid_device *hdev) | |
281 | { | |
282 | struct usb_interface *intf = to_usb_interface(hdev->dev.parent); | |
283 | struct usb_device *usb_dev = interface_to_usbdev(intf); | |
284 | struct arvo_device *arvo; | |
285 | int retval; | |
286 | ||
287 | if (intf->cur_altsetting->desc.bInterfaceProtocol | |
288 | == USB_INTERFACE_PROTOCOL_KEYBOARD) { | |
289 | hid_set_drvdata(hdev, NULL); | |
290 | return 0; | |
291 | } | |
292 | ||
293 | arvo = kzalloc(sizeof(*arvo), GFP_KERNEL); | |
294 | if (!arvo) { | |
a28764ef | 295 | hid_err(hdev, "can't alloc device descriptor\n"); |
e68cc603 SA |
296 | return -ENOMEM; |
297 | } | |
298 | hid_set_drvdata(hdev, arvo); | |
299 | ||
300 | retval = arvo_init_arvo_device_struct(usb_dev, arvo); | |
301 | if (retval) { | |
a28764ef | 302 | hid_err(hdev, "couldn't init struct arvo_device\n"); |
e68cc603 SA |
303 | goto exit_free; |
304 | } | |
305 | ||
306 | retval = roccat_connect(arvo_class, hdev); | |
307 | if (retval < 0) { | |
a28764ef | 308 | hid_err(hdev, "couldn't init char dev\n"); |
e68cc603 SA |
309 | } else { |
310 | arvo->chrdev_minor = retval; | |
311 | arvo->roccat_claimed = 1; | |
312 | } | |
313 | ||
314 | return 0; | |
315 | exit_free: | |
316 | kfree(arvo); | |
317 | return retval; | |
318 | } | |
319 | ||
320 | static void arvo_remove_specials(struct hid_device *hdev) | |
321 | { | |
322 | struct usb_interface *intf = to_usb_interface(hdev->dev.parent); | |
323 | struct arvo_device *arvo; | |
324 | ||
325 | if (intf->cur_altsetting->desc.bInterfaceProtocol | |
326 | == USB_INTERFACE_PROTOCOL_KEYBOARD) | |
327 | return; | |
328 | ||
329 | arvo = hid_get_drvdata(hdev); | |
330 | if (arvo->roccat_claimed) | |
331 | roccat_disconnect(arvo->chrdev_minor); | |
332 | kfree(arvo); | |
333 | } | |
334 | ||
335 | static int arvo_probe(struct hid_device *hdev, | |
336 | const struct hid_device_id *id) | |
337 | { | |
338 | int retval; | |
339 | ||
340 | retval = hid_parse(hdev); | |
341 | if (retval) { | |
a28764ef | 342 | hid_err(hdev, "parse failed\n"); |
e68cc603 SA |
343 | goto exit; |
344 | } | |
345 | ||
346 | retval = hid_hw_start(hdev, HID_CONNECT_DEFAULT); | |
347 | if (retval) { | |
a28764ef | 348 | hid_err(hdev, "hw start failed\n"); |
e68cc603 SA |
349 | goto exit; |
350 | } | |
351 | ||
352 | retval = arvo_init_specials(hdev); | |
353 | if (retval) { | |
a28764ef | 354 | hid_err(hdev, "couldn't install keyboard\n"); |
e68cc603 SA |
355 | goto exit_stop; |
356 | } | |
357 | ||
358 | return 0; | |
359 | ||
360 | exit_stop: | |
361 | hid_hw_stop(hdev); | |
362 | exit: | |
363 | return retval; | |
364 | } | |
365 | ||
366 | static void arvo_remove(struct hid_device *hdev) | |
367 | { | |
368 | arvo_remove_specials(hdev); | |
369 | hid_hw_stop(hdev); | |
370 | } | |
371 | ||
372 | static void arvo_report_to_chrdev(struct arvo_device const *arvo, | |
373 | u8 const *data) | |
374 | { | |
375 | struct arvo_special_report const *special_report; | |
376 | struct arvo_roccat_report roccat_report; | |
377 | ||
378 | special_report = (struct arvo_special_report const *)data; | |
379 | ||
380 | roccat_report.profile = arvo->actual_profile; | |
381 | roccat_report.button = special_report->event & | |
382 | ARVO_SPECIAL_REPORT_EVENT_MASK_BUTTON; | |
383 | if ((special_report->event & ARVO_SPECIAL_REPORT_EVENT_MASK_ACTION) == | |
384 | ARVO_SPECIAL_REPORT_EVENT_ACTION_PRESS) | |
385 | roccat_report.action = ARVO_ROCCAT_REPORT_ACTION_PRESS; | |
386 | else | |
387 | roccat_report.action = ARVO_ROCCAT_REPORT_ACTION_RELEASE; | |
388 | ||
389 | roccat_report_event(arvo->chrdev_minor, (uint8_t const *)&roccat_report, | |
390 | sizeof(struct arvo_roccat_report)); | |
391 | } | |
392 | ||
393 | static int arvo_raw_event(struct hid_device *hdev, | |
394 | struct hid_report *report, u8 *data, int size) | |
395 | { | |
396 | struct arvo_device *arvo = hid_get_drvdata(hdev); | |
397 | ||
398 | if (size != 3) | |
399 | return 0; | |
400 | ||
401 | if (arvo->roccat_claimed) | |
402 | arvo_report_to_chrdev(arvo, data); | |
403 | ||
404 | return 0; | |
405 | } | |
406 | ||
407 | static const struct hid_device_id arvo_devices[] = { | |
408 | { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_ARVO) }, | |
409 | { } | |
410 | }; | |
411 | ||
412 | MODULE_DEVICE_TABLE(hid, arvo_devices); | |
413 | ||
414 | static struct hid_driver arvo_driver = { | |
415 | .name = "arvo", | |
416 | .id_table = arvo_devices, | |
417 | .probe = arvo_probe, | |
418 | .remove = arvo_remove, | |
419 | .raw_event = arvo_raw_event | |
420 | }; | |
421 | ||
422 | static int __init arvo_init(void) | |
423 | { | |
424 | int retval; | |
425 | ||
426 | arvo_class = class_create(THIS_MODULE, "arvo"); | |
427 | if (IS_ERR(arvo_class)) | |
428 | return PTR_ERR(arvo_class); | |
429 | arvo_class->dev_attrs = arvo_attributes; | |
430 | arvo_class->dev_bin_attrs = arvo_bin_attributes; | |
431 | ||
432 | retval = hid_register_driver(&arvo_driver); | |
433 | if (retval) | |
434 | class_destroy(arvo_class); | |
435 | return retval; | |
436 | } | |
437 | ||
438 | static void __exit arvo_exit(void) | |
439 | { | |
440 | class_destroy(arvo_class); | |
441 | hid_unregister_driver(&arvo_driver); | |
442 | } | |
443 | ||
444 | module_init(arvo_init); | |
445 | module_exit(arvo_exit); | |
446 | ||
447 | MODULE_AUTHOR("Stefan Achatz"); | |
448 | MODULE_DESCRIPTION("USB Roccat Arvo driver"); | |
449 | MODULE_LICENSE("GPL v2"); |