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1 | /* |
2 | * Roccat Isku 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 Isku is a gamer keyboard with 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-isku.h" |
28 | |
29 | static struct class *isku_class; |
30 | |
31 | static void isku_profile_activated(struct isku_device *isku, uint new_profile) |
32 | { |
33 | isku->actual_profile = new_profile; |
34 | } |
35 | |
36 | static int isku_receive(struct usb_device *usb_dev, uint command, |
37 | void *buf, uint size) |
38 | { |
39 | return roccat_common2_receive(usb_dev, command, buf, size); |
40 | } |
41 | |
42 | static int isku_get_actual_profile(struct usb_device *usb_dev) |
43 | { |
44 | struct isku_actual_profile buf; |
45 | int retval; |
46 | |
47 | retval = isku_receive(usb_dev, ISKU_COMMAND_ACTUAL_PROFILE, |
48 | &buf, sizeof(struct isku_actual_profile)); |
49 | return retval ? retval : buf.actual_profile; |
50 | } |
51 | |
52 | static int isku_set_actual_profile(struct usb_device *usb_dev, int new_profile) |
53 | { |
54 | struct isku_actual_profile buf; |
55 | |
56 | buf.command = ISKU_COMMAND_ACTUAL_PROFILE; |
57 | buf.size = sizeof(struct isku_actual_profile); |
58 | buf.actual_profile = new_profile; |
59 | return roccat_common2_send_with_status(usb_dev, |
60 | ISKU_COMMAND_ACTUAL_PROFILE, &buf, |
61 | sizeof(struct isku_actual_profile)); |
62 | } |
63 | |
64 | static ssize_t isku_sysfs_show_actual_profile(struct device *dev, |
65 | struct device_attribute *attr, char *buf) |
66 | { |
67 | struct isku_device *isku = |
68 | hid_get_drvdata(dev_get_drvdata(dev->parent->parent)); |
69 | return snprintf(buf, PAGE_SIZE, "%d\n", isku->actual_profile); |
70 | } |
71 | |
72 | static ssize_t isku_sysfs_set_actual_profile(struct device *dev, |
73 | struct device_attribute *attr, char const *buf, size_t size) |
74 | { |
75 | struct isku_device *isku; |
76 | struct usb_device *usb_dev; |
77 | unsigned long profile; |
78 | int retval; |
79 | struct isku_roccat_report roccat_report; |
80 | |
81 | dev = dev->parent->parent; |
82 | isku = hid_get_drvdata(dev_get_drvdata(dev)); |
83 | usb_dev = interface_to_usbdev(to_usb_interface(dev)); |
84 | |
85 | retval = strict_strtoul(buf, 10, &profile); |
86 | if (retval) |
87 | return retval; |
88 | |
89 | if (profile > 4) |
90 | return -EINVAL; |
91 | |
92 | mutex_lock(&isku->isku_lock); |
93 | |
94 | retval = isku_set_actual_profile(usb_dev, profile); |
95 | if (retval) { |
96 | mutex_unlock(&isku->isku_lock); |
97 | return retval; |
98 | } |
99 | |
100 | isku_profile_activated(isku, profile); |
101 | |
102 | roccat_report.event = ISKU_REPORT_BUTTON_EVENT_PROFILE; |
103 | roccat_report.data1 = profile + 1; |
104 | roccat_report.data2 = 0; |
105 | roccat_report.profile = profile + 1; |
106 | roccat_report_event(isku->chrdev_minor, (uint8_t const *)&roccat_report); |
107 | |
108 | mutex_unlock(&isku->isku_lock); |
109 | |
110 | return size; |
111 | } |
112 | |
113 | static struct device_attribute isku_attributes[] = { |
114 | __ATTR(actual_profile, 0660, |
115 | isku_sysfs_show_actual_profile, |
116 | isku_sysfs_set_actual_profile), |
117 | __ATTR_NULL |
118 | }; |
119 | |
120 | static ssize_t isku_sysfs_read(struct file *fp, struct kobject *kobj, |
121 | char *buf, loff_t off, size_t count, |
122 | size_t real_size, uint command) |
123 | { |
124 | struct device *dev = |
125 | container_of(kobj, struct device, kobj)->parent->parent; |
126 | struct isku_device *isku = hid_get_drvdata(dev_get_drvdata(dev)); |
127 | struct usb_device *usb_dev = interface_to_usbdev(to_usb_interface(dev)); |
128 | int retval; |
129 | |
130 | if (off >= real_size) |
131 | return 0; |
132 | |
133 | if (off != 0 || count != real_size) |
134 | return -EINVAL; |
135 | |
136 | mutex_lock(&isku->isku_lock); |
137 | retval = isku_receive(usb_dev, command, buf, real_size); |
138 | mutex_unlock(&isku->isku_lock); |
139 | |
140 | return retval ? retval : real_size; |
141 | } |
142 | |
143 | static ssize_t isku_sysfs_write(struct file *fp, struct kobject *kobj, |
144 | void const *buf, loff_t off, size_t count, |
145 | size_t real_size, uint command) |
146 | { |
147 | struct device *dev = |
148 | container_of(kobj, struct device, kobj)->parent->parent; |
149 | struct isku_device *isku = hid_get_drvdata(dev_get_drvdata(dev)); |
150 | struct usb_device *usb_dev = interface_to_usbdev(to_usb_interface(dev)); |
151 | int retval; |
152 | |
153 | if (off != 0 || count != real_size) |
154 | return -EINVAL; |
155 | |
156 | mutex_lock(&isku->isku_lock); |
157 | retval = roccat_common2_send_with_status(usb_dev, command, |
158 | (void *)buf, real_size); |
159 | mutex_unlock(&isku->isku_lock); |
160 | |
161 | return retval ? retval : real_size; |
162 | } |
163 | |
164 | #define ISKU_SYSFS_W(thingy, THINGY) \ |
165 | static ssize_t isku_sysfs_write_ ## thingy(struct file *fp, struct kobject *kobj, \ |
166 | struct bin_attribute *attr, char *buf, \ |
167 | loff_t off, size_t count) \ |
168 | { \ |
169 | return isku_sysfs_write(fp, kobj, buf, off, count, \ |
170 | sizeof(struct isku_ ## thingy), ISKU_COMMAND_ ## THINGY); \ |
171 | } |
172 | |
173 | #define ISKU_SYSFS_R(thingy, THINGY) \ |
174 | static ssize_t isku_sysfs_read_ ## thingy(struct file *fp, struct kobject *kobj, \ |
175 | struct bin_attribute *attr, char *buf, \ |
176 | loff_t off, size_t count) \ |
177 | { \ |
178 | return isku_sysfs_read(fp, kobj, buf, off, count, \ |
179 | sizeof(struct isku_ ## thingy), ISKU_COMMAND_ ## THINGY); \ |
180 | } |
181 | |
182 | #define ISKU_SYSFS_RW(thingy, THINGY) \ |
183 | ISKU_SYSFS_R(thingy, THINGY) \ |
184 | ISKU_SYSFS_W(thingy, THINGY) |
185 | |
186 | #define ISKU_BIN_ATTR_RW(thingy) \ |
187 | { \ |
188 | .attr = { .name = #thingy, .mode = 0660 }, \ |
189 | .size = sizeof(struct isku_ ## thingy), \ |
190 | .read = isku_sysfs_read_ ## thingy, \ |
191 | .write = isku_sysfs_write_ ## thingy \ |
192 | } |
193 | |
194 | #define ISKU_BIN_ATTR_R(thingy) \ |
195 | { \ |
196 | .attr = { .name = #thingy, .mode = 0440 }, \ |
197 | .size = sizeof(struct isku_ ## thingy), \ |
198 | .read = isku_sysfs_read_ ## thingy, \ |
199 | } |
200 | |
201 | #define ISKU_BIN_ATTR_W(thingy) \ |
202 | { \ |
203 | .attr = { .name = #thingy, .mode = 0220 }, \ |
204 | .size = sizeof(struct isku_ ## thingy), \ |
205 | .write = isku_sysfs_write_ ## thingy \ |
206 | } |
207 | |
208 | ISKU_SYSFS_RW(macro, MACRO) |
209 | ISKU_SYSFS_RW(keys_function, KEYS_FUNCTION) |
210 | ISKU_SYSFS_RW(keys_easyzone, KEYS_EASYZONE) |
211 | ISKU_SYSFS_RW(keys_media, KEYS_MEDIA) |
212 | ISKU_SYSFS_RW(keys_thumbster, KEYS_THUMBSTER) |
213 | ISKU_SYSFS_RW(keys_macro, KEYS_MACRO) |
214 | ISKU_SYSFS_RW(keys_capslock, KEYS_CAPSLOCK) |
215 | ISKU_SYSFS_RW(light, LIGHT) |
216 | ISKU_SYSFS_RW(key_mask, KEY_MASK) |
217 | ISKU_SYSFS_RW(last_set, LAST_SET) |
218 | ISKU_SYSFS_W(talk, TALK) |
219 | ISKU_SYSFS_R(info, INFO) |
220 | ISKU_SYSFS_W(control, CONTROL) |
221 | |
222 | static struct bin_attribute isku_bin_attributes[] = { |
223 | ISKU_BIN_ATTR_RW(macro), |
224 | ISKU_BIN_ATTR_RW(keys_function), |
225 | ISKU_BIN_ATTR_RW(keys_easyzone), |
226 | ISKU_BIN_ATTR_RW(keys_media), |
227 | ISKU_BIN_ATTR_RW(keys_thumbster), |
228 | ISKU_BIN_ATTR_RW(keys_macro), |
229 | ISKU_BIN_ATTR_RW(keys_capslock), |
230 | ISKU_BIN_ATTR_RW(light), |
231 | ISKU_BIN_ATTR_RW(key_mask), |
232 | ISKU_BIN_ATTR_RW(last_set), |
233 | ISKU_BIN_ATTR_W(talk), |
234 | ISKU_BIN_ATTR_R(info), |
235 | ISKU_BIN_ATTR_W(control), |
236 | __ATTR_NULL |
237 | }; |
238 | |
239 | static int isku_init_isku_device_struct(struct usb_device *usb_dev, |
240 | struct isku_device *isku) |
241 | { |
242 | int retval; |
243 | |
244 | mutex_init(&isku->isku_lock); |
245 | |
246 | retval = isku_get_actual_profile(usb_dev); |
247 | if (retval < 0) |
248 | return retval; |
249 | isku_profile_activated(isku, retval); |
250 | |
251 | return 0; |
252 | } |
253 | |
254 | static int isku_init_specials(struct hid_device *hdev) |
255 | { |
256 | struct usb_interface *intf = to_usb_interface(hdev->dev.parent); |
257 | struct usb_device *usb_dev = interface_to_usbdev(intf); |
258 | struct isku_device *isku; |
259 | int retval; |
260 | |
261 | if (intf->cur_altsetting->desc.bInterfaceProtocol |
262 | != ISKU_USB_INTERFACE_PROTOCOL) { |
263 | hid_set_drvdata(hdev, NULL); |
264 | return 0; |
265 | } |
266 | |
267 | isku = kzalloc(sizeof(*isku), GFP_KERNEL); |
268 | if (!isku) { |
269 | hid_err(hdev, "can't alloc device descriptor\n"); |
270 | return -ENOMEM; |
271 | } |
272 | hid_set_drvdata(hdev, isku); |
273 | |
274 | retval = isku_init_isku_device_struct(usb_dev, isku); |
275 | if (retval) { |
276 | hid_err(hdev, "couldn't init struct isku_device\n"); |
277 | goto exit_free; |
278 | } |
279 | |
280 | retval = roccat_connect(isku_class, hdev, |
281 | sizeof(struct isku_roccat_report)); |
282 | if (retval < 0) { |
283 | hid_err(hdev, "couldn't init char dev\n"); |
284 | } else { |
285 | isku->chrdev_minor = retval; |
286 | isku->roccat_claimed = 1; |
287 | } |
288 | |
289 | return 0; |
290 | exit_free: |
291 | kfree(isku); |
292 | return retval; |
293 | } |
294 | |
295 | static void isku_remove_specials(struct hid_device *hdev) |
296 | { |
297 | struct usb_interface *intf = to_usb_interface(hdev->dev.parent); |
298 | struct isku_device *isku; |
299 | |
300 | if (intf->cur_altsetting->desc.bInterfaceProtocol |
301 | != ISKU_USB_INTERFACE_PROTOCOL) |
302 | return; |
303 | |
304 | isku = hid_get_drvdata(hdev); |
305 | if (isku->roccat_claimed) |
306 | roccat_disconnect(isku->chrdev_minor); |
307 | kfree(isku); |
308 | } |
309 | |
310 | static int isku_probe(struct hid_device *hdev, |
311 | const struct hid_device_id *id) |
312 | { |
313 | int retval; |
314 | |
315 | retval = hid_parse(hdev); |
316 | if (retval) { |
317 | hid_err(hdev, "parse failed\n"); |
318 | goto exit; |
319 | } |
320 | |
321 | retval = hid_hw_start(hdev, HID_CONNECT_DEFAULT); |
322 | if (retval) { |
323 | hid_err(hdev, "hw start failed\n"); |
324 | goto exit; |
325 | } |
326 | |
327 | retval = isku_init_specials(hdev); |
328 | if (retval) { |
329 | hid_err(hdev, "couldn't install keyboard\n"); |
330 | goto exit_stop; |
331 | } |
332 | |
333 | return 0; |
334 | |
335 | exit_stop: |
336 | hid_hw_stop(hdev); |
337 | exit: |
338 | return retval; |
339 | } |
340 | |
341 | static void isku_remove(struct hid_device *hdev) |
342 | { |
343 | isku_remove_specials(hdev); |
344 | hid_hw_stop(hdev); |
345 | } |
346 | |
347 | static void isku_keep_values_up_to_date(struct isku_device *isku, |
348 | u8 const *data) |
349 | { |
350 | struct isku_report_button const *button_report; |
351 | |
352 | switch (data[0]) { |
353 | case ISKU_REPORT_NUMBER_BUTTON: |
354 | button_report = (struct isku_report_button const *)data; |
355 | switch (button_report->event) { |
356 | case ISKU_REPORT_BUTTON_EVENT_PROFILE: |
357 | isku_profile_activated(isku, button_report->data1 - 1); |
358 | break; |
359 | } |
360 | break; |
361 | } |
362 | } |
363 | |
364 | static void isku_report_to_chrdev(struct isku_device const *isku, |
365 | u8 const *data) |
366 | { |
367 | struct isku_roccat_report roccat_report; |
368 | struct isku_report_button const *button_report; |
369 | |
370 | if (data[0] != ISKU_REPORT_NUMBER_BUTTON) |
371 | return; |
372 | |
373 | button_report = (struct isku_report_button const *)data; |
374 | |
375 | roccat_report.event = button_report->event; |
376 | roccat_report.data1 = button_report->data1; |
377 | roccat_report.data2 = button_report->data2; |
378 | roccat_report.profile = isku->actual_profile + 1; |
379 | roccat_report_event(isku->chrdev_minor, |
380 | (uint8_t const *)&roccat_report); |
381 | } |
382 | |
383 | static int isku_raw_event(struct hid_device *hdev, |
384 | struct hid_report *report, u8 *data, int size) |
385 | { |
386 | struct usb_interface *intf = to_usb_interface(hdev->dev.parent); |
387 | struct isku_device *isku = hid_get_drvdata(hdev); |
388 | |
389 | if (intf->cur_altsetting->desc.bInterfaceProtocol |
390 | != ISKU_USB_INTERFACE_PROTOCOL) |
391 | return 0; |
392 | |
393 | if (isku == NULL) |
394 | return 0; |
395 | |
396 | isku_keep_values_up_to_date(isku, data); |
397 | |
398 | if (isku->roccat_claimed) |
399 | isku_report_to_chrdev(isku, data); |
400 | |
401 | return 0; |
402 | } |
403 | |
404 | static const struct hid_device_id isku_devices[] = { |
405 | { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_ISKU) }, |
406 | { } |
407 | }; |
408 | |
409 | MODULE_DEVICE_TABLE(hid, isku_devices); |
410 | |
411 | static struct hid_driver isku_driver = { |
412 | .name = "isku", |
413 | .id_table = isku_devices, |
414 | .probe = isku_probe, |
415 | .remove = isku_remove, |
416 | .raw_event = isku_raw_event |
417 | }; |
418 | |
419 | static int __init isku_init(void) |
420 | { |
421 | int retval; |
422 | isku_class = class_create(THIS_MODULE, "isku"); |
423 | if (IS_ERR(isku_class)) |
424 | return PTR_ERR(isku_class); |
425 | isku_class->dev_attrs = isku_attributes; |
426 | isku_class->dev_bin_attrs = isku_bin_attributes; |
427 | |
428 | retval = hid_register_driver(&isku_driver); |
429 | if (retval) |
430 | class_destroy(isku_class); |
431 | return retval; |
432 | } |
433 | |
434 | static void __exit isku_exit(void) |
435 | { |
436 | hid_unregister_driver(&isku_driver); |
437 | class_destroy(isku_class); |
438 | } |
439 | |
440 | module_init(isku_init); |
441 | module_exit(isku_exit); |
442 | |
443 | MODULE_AUTHOR("Stefan Achatz"); |
444 | MODULE_DESCRIPTION("USB Roccat Isku driver"); |
445 | MODULE_LICENSE("GPL v2"); |
446 |
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