1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16#include <linux/device.h>
17#include <linux/input.h>
18#include <linux/hid.h>
19#include <linux/module.h>
20#include <linux/slab.h>
21#include <linux/hid-roccat.h>
22#include "hid-ids.h"
23#include "hid-roccat-common.h"
24#include "hid-roccat-isku.h"
25
26static struct class *isku_class;
27
28static void isku_profile_activated(struct isku_device *isku, uint new_profile)
29{
30 isku->actual_profile = new_profile;
31}
32
33static int isku_receive(struct usb_device *usb_dev, uint command,
34 void *buf, uint size)
35{
36 return roccat_common2_receive(usb_dev, command, buf, size);
37}
38
39static int isku_get_actual_profile(struct usb_device *usb_dev)
40{
41 struct isku_actual_profile buf;
42 int retval;
43
44 retval = isku_receive(usb_dev, ISKU_COMMAND_ACTUAL_PROFILE,
45 &buf, sizeof(struct isku_actual_profile));
46 return retval ? retval : buf.actual_profile;
47}
48
49static int isku_set_actual_profile(struct usb_device *usb_dev, int new_profile)
50{
51 struct isku_actual_profile buf;
52
53 buf.command = ISKU_COMMAND_ACTUAL_PROFILE;
54 buf.size = sizeof(struct isku_actual_profile);
55 buf.actual_profile = new_profile;
56 return roccat_common2_send_with_status(usb_dev,
57 ISKU_COMMAND_ACTUAL_PROFILE, &buf,
58 sizeof(struct isku_actual_profile));
59}
60
61static ssize_t isku_sysfs_show_actual_profile(struct device *dev,
62 struct device_attribute *attr, char *buf)
63{
64 struct isku_device *isku =
65 hid_get_drvdata(dev_get_drvdata(dev->parent->parent));
66 return snprintf(buf, PAGE_SIZE, "%d\n", isku->actual_profile);
67}
68
69static ssize_t isku_sysfs_set_actual_profile(struct device *dev,
70 struct device_attribute *attr, char const *buf, size_t size)
71{
72 struct isku_device *isku;
73 struct usb_device *usb_dev;
74 unsigned long profile;
75 int retval;
76 struct isku_roccat_report roccat_report;
77
78 dev = dev->parent->parent;
79 isku = hid_get_drvdata(dev_get_drvdata(dev));
80 usb_dev = interface_to_usbdev(to_usb_interface(dev));
81
82 retval = kstrtoul(buf, 10, &profile);
83 if (retval)
84 return retval;
85
86 if (profile > 4)
87 return -EINVAL;
88
89 mutex_lock(&isku->isku_lock);
90
91 retval = isku_set_actual_profile(usb_dev, profile);
92 if (retval) {
93 mutex_unlock(&isku->isku_lock);
94 return retval;
95 }
96
97 isku_profile_activated(isku, profile);
98
99 roccat_report.event = ISKU_REPORT_BUTTON_EVENT_PROFILE;
100 roccat_report.data1 = profile + 1;
101 roccat_report.data2 = 0;
102 roccat_report.profile = profile + 1;
103 roccat_report_event(isku->chrdev_minor, (uint8_t const *)&roccat_report);
104
105 mutex_unlock(&isku->isku_lock);
106
107 return size;
108}
109static DEVICE_ATTR(actual_profile, 0660, isku_sysfs_show_actual_profile,
110 isku_sysfs_set_actual_profile);
111
112static struct attribute *isku_attrs[] = {
113 &dev_attr_actual_profile.attr,
114 NULL,
115};
116
117static ssize_t isku_sysfs_read(struct file *fp, struct kobject *kobj,
118 char *buf, loff_t off, size_t count,
119 size_t real_size, uint command)
120{
121 struct device *dev = kobj_to_dev(kobj)->parent->parent;
122 struct isku_device *isku = hid_get_drvdata(dev_get_drvdata(dev));
123 struct usb_device *usb_dev = interface_to_usbdev(to_usb_interface(dev));
124 int retval;
125
126 if (off >= real_size)
127 return 0;
128
129 if (off != 0 || count > real_size)
130 return -EINVAL;
131
132 mutex_lock(&isku->isku_lock);
133 retval = isku_receive(usb_dev, command, buf, count);
134 mutex_unlock(&isku->isku_lock);
135
136 return retval ? retval : count;
137}
138
139static ssize_t isku_sysfs_write(struct file *fp, struct kobject *kobj,
140 void const *buf, loff_t off, size_t count,
141 size_t real_size, uint command)
142{
143 struct device *dev = kobj_to_dev(kobj)->parent->parent;
144 struct isku_device *isku = hid_get_drvdata(dev_get_drvdata(dev));
145 struct usb_device *usb_dev = interface_to_usbdev(to_usb_interface(dev));
146 int retval;
147
148 if (off != 0 || count > real_size)
149 return -EINVAL;
150
151 mutex_lock(&isku->isku_lock);
152 retval = roccat_common2_send_with_status(usb_dev, command,
153 (void *)buf, count);
154 mutex_unlock(&isku->isku_lock);
155
156 return retval ? retval : count;
157}
158
159#define ISKU_SYSFS_W(thingy, THINGY) \
160static ssize_t isku_sysfs_write_ ## thingy(struct file *fp, struct kobject *kobj, \
161 struct bin_attribute *attr, char *buf, \
162 loff_t off, size_t count) \
163{ \
164 return isku_sysfs_write(fp, kobj, buf, off, count, \
165 ISKU_SIZE_ ## THINGY, ISKU_COMMAND_ ## THINGY); \
166}
167
168#define ISKU_SYSFS_R(thingy, THINGY) \
169static ssize_t isku_sysfs_read_ ## thingy(struct file *fp, struct kobject *kobj, \
170 struct bin_attribute *attr, char *buf, \
171 loff_t off, size_t count) \
172{ \
173 return isku_sysfs_read(fp, kobj, buf, off, count, \
174 ISKU_SIZE_ ## THINGY, ISKU_COMMAND_ ## THINGY); \
175}
176
177#define ISKU_SYSFS_RW(thingy, THINGY) \
178ISKU_SYSFS_R(thingy, THINGY) \
179ISKU_SYSFS_W(thingy, THINGY)
180
181#define ISKU_BIN_ATTR_RW(thingy, THINGY) \
182ISKU_SYSFS_RW(thingy, THINGY); \
183static struct bin_attribute bin_attr_##thingy = { \
184 .attr = { .name = #thingy, .mode = 0660 }, \
185 .size = ISKU_SIZE_ ## THINGY, \
186 .read = isku_sysfs_read_ ## thingy, \
187 .write = isku_sysfs_write_ ## thingy \
188}
189
190#define ISKU_BIN_ATTR_R(thingy, THINGY) \
191ISKU_SYSFS_R(thingy, THINGY); \
192static struct bin_attribute bin_attr_##thingy = { \
193 .attr = { .name = #thingy, .mode = 0440 }, \
194 .size = ISKU_SIZE_ ## THINGY, \
195 .read = isku_sysfs_read_ ## thingy, \
196}
197
198#define ISKU_BIN_ATTR_W(thingy, THINGY) \
199ISKU_SYSFS_W(thingy, THINGY); \
200static struct bin_attribute bin_attr_##thingy = { \
201 .attr = { .name = #thingy, .mode = 0220 }, \
202 .size = ISKU_SIZE_ ## THINGY, \
203 .write = isku_sysfs_write_ ## thingy \
204}
205
206ISKU_BIN_ATTR_RW(macro, MACRO);
207ISKU_BIN_ATTR_RW(keys_function, KEYS_FUNCTION);
208ISKU_BIN_ATTR_RW(keys_easyzone, KEYS_EASYZONE);
209ISKU_BIN_ATTR_RW(keys_media, KEYS_MEDIA);
210ISKU_BIN_ATTR_RW(keys_thumbster, KEYS_THUMBSTER);
211ISKU_BIN_ATTR_RW(keys_macro, KEYS_MACRO);
212ISKU_BIN_ATTR_RW(keys_capslock, KEYS_CAPSLOCK);
213ISKU_BIN_ATTR_RW(light, LIGHT);
214ISKU_BIN_ATTR_RW(key_mask, KEY_MASK);
215ISKU_BIN_ATTR_RW(last_set, LAST_SET);
216ISKU_BIN_ATTR_W(talk, TALK);
217ISKU_BIN_ATTR_W(talkfx, TALKFX);
218ISKU_BIN_ATTR_W(control, CONTROL);
219ISKU_BIN_ATTR_W(reset, RESET);
220ISKU_BIN_ATTR_R(info, INFO);
221
222static struct bin_attribute *isku_bin_attributes[] = {
223 &bin_attr_macro,
224 &bin_attr_keys_function,
225 &bin_attr_keys_easyzone,
226 &bin_attr_keys_media,
227 &bin_attr_keys_thumbster,
228 &bin_attr_keys_macro,
229 &bin_attr_keys_capslock,
230 &bin_attr_light,
231 &bin_attr_key_mask,
232 &bin_attr_last_set,
233 &bin_attr_talk,
234 &bin_attr_talkfx,
235 &bin_attr_control,
236 &bin_attr_reset,
237 &bin_attr_info,
238 NULL,
239};
240
241static const struct attribute_group isku_group = {
242 .attrs = isku_attrs,
243 .bin_attrs = isku_bin_attributes,
244};
245
246static const struct attribute_group *isku_groups[] = {
247 &isku_group,
248 NULL,
249};
250
251static int isku_init_isku_device_struct(struct usb_device *usb_dev,
252 struct isku_device *isku)
253{
254 int retval;
255
256 mutex_init(&isku->isku_lock);
257
258 retval = isku_get_actual_profile(usb_dev);
259 if (retval < 0)
260 return retval;
261 isku_profile_activated(isku, retval);
262
263 return 0;
264}
265
266static int isku_init_specials(struct hid_device *hdev)
267{
268 struct usb_interface *intf = to_usb_interface(hdev->dev.parent);
269 struct usb_device *usb_dev = interface_to_usbdev(intf);
270 struct isku_device *isku;
271 int retval;
272
273 if (intf->cur_altsetting->desc.bInterfaceProtocol
274 != ISKU_USB_INTERFACE_PROTOCOL) {
275 hid_set_drvdata(hdev, NULL);
276 return 0;
277 }
278
279 isku = kzalloc(sizeof(*isku), GFP_KERNEL);
280 if (!isku) {
281 hid_err(hdev, "can't alloc device descriptor\n");
282 return -ENOMEM;
283 }
284 hid_set_drvdata(hdev, isku);
285
286 retval = isku_init_isku_device_struct(usb_dev, isku);
287 if (retval) {
288 hid_err(hdev, "couldn't init struct isku_device\n");
289 goto exit_free;
290 }
291
292 retval = roccat_connect(isku_class, hdev,
293 sizeof(struct isku_roccat_report));
294 if (retval < 0) {
295 hid_err(hdev, "couldn't init char dev\n");
296 } else {
297 isku->chrdev_minor = retval;
298 isku->roccat_claimed = 1;
299 }
300
301 return 0;
302exit_free:
303 kfree(isku);
304 return retval;
305}
306
307static void isku_remove_specials(struct hid_device *hdev)
308{
309 struct usb_interface *intf = to_usb_interface(hdev->dev.parent);
310 struct isku_device *isku;
311
312 if (intf->cur_altsetting->desc.bInterfaceProtocol
313 != ISKU_USB_INTERFACE_PROTOCOL)
314 return;
315
316 isku = hid_get_drvdata(hdev);
317 if (isku->roccat_claimed)
318 roccat_disconnect(isku->chrdev_minor);
319 kfree(isku);
320}
321
322static int isku_probe(struct hid_device *hdev,
323 const struct hid_device_id *id)
324{
325 int retval;
326
327 retval = hid_parse(hdev);
328 if (retval) {
329 hid_err(hdev, "parse failed\n");
330 goto exit;
331 }
332
333 retval = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
334 if (retval) {
335 hid_err(hdev, "hw start failed\n");
336 goto exit;
337 }
338
339 retval = isku_init_specials(hdev);
340 if (retval) {
341 hid_err(hdev, "couldn't install keyboard\n");
342 goto exit_stop;
343 }
344
345 return 0;
346
347exit_stop:
348 hid_hw_stop(hdev);
349exit:
350 return retval;
351}
352
353static void isku_remove(struct hid_device *hdev)
354{
355 isku_remove_specials(hdev);
356 hid_hw_stop(hdev);
357}
358
359static void isku_keep_values_up_to_date(struct isku_device *isku,
360 u8 const *data)
361{
362 struct isku_report_button const *button_report;
363
364 switch (data[0]) {
365 case ISKU_REPORT_NUMBER_BUTTON:
366 button_report = (struct isku_report_button const *)data;
367 switch (button_report->event) {
368 case ISKU_REPORT_BUTTON_EVENT_PROFILE:
369 isku_profile_activated(isku, button_report->data1 - 1);
370 break;
371 }
372 break;
373 }
374}
375
376static void isku_report_to_chrdev(struct isku_device const *isku,
377 u8 const *data)
378{
379 struct isku_roccat_report roccat_report;
380 struct isku_report_button const *button_report;
381
382 if (data[0] != ISKU_REPORT_NUMBER_BUTTON)
383 return;
384
385 button_report = (struct isku_report_button const *)data;
386
387 roccat_report.event = button_report->event;
388 roccat_report.data1 = button_report->data1;
389 roccat_report.data2 = button_report->data2;
390 roccat_report.profile = isku->actual_profile + 1;
391 roccat_report_event(isku->chrdev_minor,
392 (uint8_t const *)&roccat_report);
393}
394
395static int isku_raw_event(struct hid_device *hdev,
396 struct hid_report *report, u8 *data, int size)
397{
398 struct usb_interface *intf = to_usb_interface(hdev->dev.parent);
399 struct isku_device *isku = hid_get_drvdata(hdev);
400
401 if (intf->cur_altsetting->desc.bInterfaceProtocol
402 != ISKU_USB_INTERFACE_PROTOCOL)
403 return 0;
404
405 if (isku == NULL)
406 return 0;
407
408 isku_keep_values_up_to_date(isku, data);
409
410 if (isku->roccat_claimed)
411 isku_report_to_chrdev(isku, data);
412
413 return 0;
414}
415
416static const struct hid_device_id isku_devices[] = {
417 { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_ISKU) },
418 { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_ISKUFX) },
419 { }
420};
421
422MODULE_DEVICE_TABLE(hid, isku_devices);
423
424static struct hid_driver isku_driver = {
425 .name = "isku",
426 .id_table = isku_devices,
427 .probe = isku_probe,
428 .remove = isku_remove,
429 .raw_event = isku_raw_event
430};
431
432static int __init isku_init(void)
433{
434 int retval;
435 isku_class = class_create(THIS_MODULE, "isku");
436 if (IS_ERR(isku_class))
437 return PTR_ERR(isku_class);
438 isku_class->dev_groups = isku_groups;
439
440 retval = hid_register_driver(&isku_driver);
441 if (retval)
442 class_destroy(isku_class);
443 return retval;
444}
445
446static void __exit isku_exit(void)
447{
448 hid_unregister_driver(&isku_driver);
449 class_destroy(isku_class);
450}
451
452module_init(isku_init);
453module_exit(isku_exit);
454
455MODULE_AUTHOR("Stefan Achatz");
456MODULE_DESCRIPTION("USB Roccat Isku/FX driver");
457MODULE_LICENSE("GPL v2");
458
