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[pohmelfs.git] / drivers / hid / hid-roccat-arvo.c
blob093bfad00b023d8a22a6bf17c382f4eef311b7ce
1 /*
2 * Roccat Arvo driver for Linux
4 * Copyright (c) 2011 Stefan Achatz <erazor_de@users.sourceforge.net>
5 */
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.
15 * Roccat Arvo is a gamer keyboard with 5 macro keys that can be configured in
16 * 5 profiles.
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"
29 static struct class *arvo_class;
31 static ssize_t arvo_sysfs_show_mode_key(struct device *dev,
32 struct device_attribute *attr, char *buf)
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;
41 mutex_lock(&arvo->arvo_lock);
42 retval = roccat_common_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;
48 return snprintf(buf, PAGE_SIZE, "%d\n", temp_buf.state);
51 static ssize_t arvo_sysfs_set_mode_key(struct device *dev,
52 struct device_attribute *attr, char const *buf, size_t size)
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;
62 retval = strict_strtoul(buf, 10, &state);
63 if (retval)
64 return retval;
66 temp_buf.command = ARVO_COMMAND_MODE_KEY;
67 temp_buf.state = state;
69 mutex_lock(&arvo->arvo_lock);
70 retval = roccat_common_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;
76 return size;
79 static ssize_t arvo_sysfs_show_key_mask(struct device *dev,
80 struct device_attribute *attr, char *buf)
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;
89 mutex_lock(&arvo->arvo_lock);
90 retval = roccat_common_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;
96 return snprintf(buf, PAGE_SIZE, "%d\n", temp_buf.key_mask);
99 static ssize_t arvo_sysfs_set_key_mask(struct device *dev,
100 struct device_attribute *attr, char const *buf, size_t size)
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;
110 retval = strict_strtoul(buf, 10, &key_mask);
111 if (retval)
112 return retval;
114 temp_buf.command = ARVO_COMMAND_KEY_MASK;
115 temp_buf.key_mask = key_mask;
117 mutex_lock(&arvo->arvo_lock);
118 retval = roccat_common_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;
124 return size;
127 /* retval is 1-5 on success, < 0 on error */
128 static int arvo_get_actual_profile(struct usb_device *usb_dev)
130 struct arvo_actual_profile temp_buf;
131 int retval;
133 retval = roccat_common_receive(usb_dev, ARVO_COMMAND_ACTUAL_PROFILE,
134 &temp_buf, sizeof(struct arvo_actual_profile));
136 if (retval)
137 return retval;
139 return temp_buf.actual_profile;
142 static ssize_t arvo_sysfs_show_actual_profile(struct device *dev,
143 struct device_attribute *attr, char *buf)
145 struct arvo_device *arvo =
146 hid_get_drvdata(dev_get_drvdata(dev->parent->parent));
148 return snprintf(buf, PAGE_SIZE, "%d\n", arvo->actual_profile);
151 static ssize_t arvo_sysfs_set_actual_profile(struct device *dev,
152 struct device_attribute *attr, char const *buf, size_t size)
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;
162 retval = strict_strtoul(buf, 10, &profile);
163 if (retval)
164 return retval;
166 if (profile < 1 || profile > 5)
167 return -EINVAL;
169 temp_buf.command = ARVO_COMMAND_ACTUAL_PROFILE;
170 temp_buf.actual_profile = profile;
172 mutex_lock(&arvo->arvo_lock);
173 retval = roccat_common_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;
179 mutex_unlock(&arvo->arvo_lock);
180 return retval;
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)
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;
193 if (off != 0 || count != real_size)
194 return -EINVAL;
196 mutex_lock(&arvo->arvo_lock);
197 retval = roccat_common_send(usb_dev, command, buf, real_size);
198 mutex_unlock(&arvo->arvo_lock);
200 return (retval ? retval : real_size);
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)
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;
213 if (off >= real_size)
214 return 0;
216 if (off != 0 || count != real_size)
217 return -EINVAL;
219 mutex_lock(&arvo->arvo_lock);
220 retval = roccat_common_receive(usb_dev, command, buf, real_size);
221 mutex_unlock(&arvo->arvo_lock);
223 return (retval ? retval : real_size);
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)
230 return arvo_sysfs_write(fp, kobj, buf, off, count,
231 sizeof(struct arvo_button), ARVO_COMMAND_BUTTON);
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)
238 return arvo_sysfs_read(fp, kobj, buf, off, count,
239 sizeof(struct arvo_info), ARVO_COMMAND_INFO);
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
254 static struct bin_attribute arvo_bin_attributes[] = {
256 .attr = { .name = "button", .mode = 0220 },
257 .size = sizeof(struct arvo_button),
258 .write = arvo_sysfs_write_button
261 .attr = { .name = "info", .mode = 0440 },
262 .size = sizeof(struct arvo_info),
263 .read = arvo_sysfs_read_info
265 __ATTR_NULL
268 static int arvo_init_arvo_device_struct(struct usb_device *usb_dev,
269 struct arvo_device *arvo)
271 int retval;
273 mutex_init(&arvo->arvo_lock);
275 retval = arvo_get_actual_profile(usb_dev);
276 if (retval < 0)
277 return retval;
278 arvo->actual_profile = retval;
280 return 0;
283 static int arvo_init_specials(struct hid_device *hdev)
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;
290 if (intf->cur_altsetting->desc.bInterfaceProtocol
291 == USB_INTERFACE_PROTOCOL_KEYBOARD) {
292 hid_set_drvdata(hdev, NULL);
293 return 0;
296 arvo = kzalloc(sizeof(*arvo), GFP_KERNEL);
297 if (!arvo) {
298 hid_err(hdev, "can't alloc device descriptor\n");
299 return -ENOMEM;
301 hid_set_drvdata(hdev, arvo);
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;
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;
318 return 0;
319 exit_free:
320 kfree(arvo);
321 return retval;
324 static void arvo_remove_specials(struct hid_device *hdev)
326 struct usb_interface *intf = to_usb_interface(hdev->dev.parent);
327 struct arvo_device *arvo;
329 if (intf->cur_altsetting->desc.bInterfaceProtocol
330 == USB_INTERFACE_PROTOCOL_KEYBOARD)
331 return;
333 arvo = hid_get_drvdata(hdev);
334 if (arvo->roccat_claimed)
335 roccat_disconnect(arvo->chrdev_minor);
336 kfree(arvo);
339 static int arvo_probe(struct hid_device *hdev,
340 const struct hid_device_id *id)
342 int retval;
344 retval = hid_parse(hdev);
345 if (retval) {
346 hid_err(hdev, "parse failed\n");
347 goto exit;
350 retval = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
351 if (retval) {
352 hid_err(hdev, "hw start failed\n");
353 goto exit;
356 retval = arvo_init_specials(hdev);
357 if (retval) {
358 hid_err(hdev, "couldn't install keyboard\n");
359 goto exit_stop;
362 return 0;
364 exit_stop:
365 hid_hw_stop(hdev);
366 exit:
367 return retval;
370 static void arvo_remove(struct hid_device *hdev)
372 arvo_remove_specials(hdev);
373 hid_hw_stop(hdev);
376 static void arvo_report_to_chrdev(struct arvo_device const *arvo,
377 u8 const *data)
379 struct arvo_special_report const *special_report;
380 struct arvo_roccat_report roccat_report;
382 special_report = (struct arvo_special_report const *)data;
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;
393 roccat_report_event(arvo->chrdev_minor,
394 (uint8_t const *)&roccat_report);
397 static int arvo_raw_event(struct hid_device *hdev,
398 struct hid_report *report, u8 *data, int size)
400 struct arvo_device *arvo = hid_get_drvdata(hdev);
402 if (size != 3)
403 return 0;
405 if (arvo && arvo->roccat_claimed)
406 arvo_report_to_chrdev(arvo, data);
408 return 0;
411 static const struct hid_device_id arvo_devices[] = {
412 { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_ARVO) },
416 MODULE_DEVICE_TABLE(hid, arvo_devices);
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
426 static int __init arvo_init(void)
428 int retval;
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;
436 retval = hid_register_driver(&arvo_driver);
437 if (retval)
438 class_destroy(arvo_class);
439 return retval;
442 static void __exit arvo_exit(void)
444 hid_unregister_driver(&arvo_driver);
445 class_destroy(arvo_class);
448 module_init(arvo_init);
449 module_exit(arvo_exit);
451 MODULE_AUTHOR("Stefan Achatz");
452 MODULE_DESCRIPTION("USB Roccat Arvo driver");
453 MODULE_LICENSE("GPL v2");