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[pohmelfs.git] / drivers / hid / hid-roccat-isku.c
blob0e4a0ab471424f893c8153b6db9890eaf800a07f
1 /*
2 * Roccat Isku 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 Isku is a gamer keyboard with 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-isku.h"
29 static struct class *isku_class;
31 static void isku_profile_activated(struct isku_device *isku, uint new_profile)
33 isku->actual_profile = new_profile;
36 static int isku_receive(struct usb_device *usb_dev, uint command,
37 void *buf, uint size)
39 return roccat_common_receive(usb_dev, command, buf, size);
42 static int isku_receive_control_status(struct usb_device *usb_dev)
44 int retval;
45 struct isku_control control;
47 do {
48 msleep(50);
49 retval = isku_receive(usb_dev, ISKU_COMMAND_CONTROL,
50 &control, sizeof(struct isku_control));
52 if (retval)
53 return retval;
55 switch (control.value) {
56 case ISKU_CONTROL_VALUE_STATUS_OK:
57 return 0;
58 case ISKU_CONTROL_VALUE_STATUS_WAIT:
59 continue;
60 case ISKU_CONTROL_VALUE_STATUS_INVALID:
61 /* seems to be critical - replug necessary */
62 case ISKU_CONTROL_VALUE_STATUS_OVERLOAD:
63 return -EINVAL;
64 default:
65 hid_err(usb_dev, "isku_receive_control_status: "
66 "unknown response value 0x%x\n",
67 control.value);
68 return -EINVAL;
71 } while (1);
74 static int isku_send(struct usb_device *usb_dev, uint command,
75 void const *buf, uint size)
77 int retval;
79 retval = roccat_common_send(usb_dev, command, buf, size);
80 if (retval)
81 return retval;
83 return isku_receive_control_status(usb_dev);
86 static int isku_get_actual_profile(struct usb_device *usb_dev)
88 struct isku_actual_profile buf;
89 int retval;
91 retval = isku_receive(usb_dev, ISKU_COMMAND_ACTUAL_PROFILE,
92 &buf, sizeof(struct isku_actual_profile));
93 return retval ? retval : buf.actual_profile;
96 static int isku_set_actual_profile(struct usb_device *usb_dev, int new_profile)
98 struct isku_actual_profile buf;
100 buf.command = ISKU_COMMAND_ACTUAL_PROFILE;
101 buf.size = sizeof(struct isku_actual_profile);
102 buf.actual_profile = new_profile;
103 return isku_send(usb_dev, ISKU_COMMAND_ACTUAL_PROFILE, &buf,
104 sizeof(struct isku_actual_profile));
107 static ssize_t isku_sysfs_show_actual_profile(struct device *dev,
108 struct device_attribute *attr, char *buf)
110 struct isku_device *isku =
111 hid_get_drvdata(dev_get_drvdata(dev->parent->parent));
112 return snprintf(buf, PAGE_SIZE, "%d\n", isku->actual_profile);
115 static ssize_t isku_sysfs_set_actual_profile(struct device *dev,
116 struct device_attribute *attr, char const *buf, size_t size)
118 struct isku_device *isku;
119 struct usb_device *usb_dev;
120 unsigned long profile;
121 int retval;
122 struct isku_roccat_report roccat_report;
124 dev = dev->parent->parent;
125 isku = hid_get_drvdata(dev_get_drvdata(dev));
126 usb_dev = interface_to_usbdev(to_usb_interface(dev));
128 retval = strict_strtoul(buf, 10, &profile);
129 if (retval)
130 return retval;
132 if (profile > 4)
133 return -EINVAL;
135 mutex_lock(&isku->isku_lock);
137 retval = isku_set_actual_profile(usb_dev, profile);
138 if (retval) {
139 mutex_unlock(&isku->isku_lock);
140 return retval;
143 isku_profile_activated(isku, profile);
145 roccat_report.event = ISKU_REPORT_BUTTON_EVENT_PROFILE;
146 roccat_report.data1 = profile + 1;
147 roccat_report.data2 = 0;
148 roccat_report.profile = profile + 1;
149 roccat_report_event(isku->chrdev_minor, (uint8_t const *)&roccat_report);
151 mutex_unlock(&isku->isku_lock);
153 return size;
156 static struct device_attribute isku_attributes[] = {
157 __ATTR(actual_profile, 0660,
158 isku_sysfs_show_actual_profile,
159 isku_sysfs_set_actual_profile),
160 __ATTR_NULL
163 static ssize_t isku_sysfs_read(struct file *fp, struct kobject *kobj,
164 char *buf, loff_t off, size_t count,
165 size_t real_size, uint command)
167 struct device *dev =
168 container_of(kobj, struct device, kobj)->parent->parent;
169 struct isku_device *isku = hid_get_drvdata(dev_get_drvdata(dev));
170 struct usb_device *usb_dev = interface_to_usbdev(to_usb_interface(dev));
171 int retval;
173 if (off >= real_size)
174 return 0;
176 if (off != 0 || count != real_size)
177 return -EINVAL;
179 mutex_lock(&isku->isku_lock);
180 retval = isku_receive(usb_dev, command, buf, real_size);
181 mutex_unlock(&isku->isku_lock);
183 return retval ? retval : real_size;
186 static ssize_t isku_sysfs_write(struct file *fp, struct kobject *kobj,
187 void const *buf, loff_t off, size_t count,
188 size_t real_size, uint command)
190 struct device *dev =
191 container_of(kobj, struct device, kobj)->parent->parent;
192 struct isku_device *isku = hid_get_drvdata(dev_get_drvdata(dev));
193 struct usb_device *usb_dev = interface_to_usbdev(to_usb_interface(dev));
194 int retval;
196 if (off != 0 || count != real_size)
197 return -EINVAL;
199 mutex_lock(&isku->isku_lock);
200 retval = isku_send(usb_dev, command, (void *)buf, real_size);
201 mutex_unlock(&isku->isku_lock);
203 return retval ? retval : real_size;
206 #define ISKU_SYSFS_W(thingy, THINGY) \
207 static ssize_t isku_sysfs_write_ ## thingy(struct file *fp, struct kobject *kobj, \
208 struct bin_attribute *attr, char *buf, \
209 loff_t off, size_t count) \
211 return isku_sysfs_write(fp, kobj, buf, off, count, \
212 sizeof(struct isku_ ## thingy), ISKU_COMMAND_ ## THINGY); \
215 #define ISKU_SYSFS_R(thingy, THINGY) \
216 static ssize_t isku_sysfs_read_ ## thingy(struct file *fp, struct kobject *kobj, \
217 struct bin_attribute *attr, char *buf, \
218 loff_t off, size_t count) \
220 return isku_sysfs_read(fp, kobj, buf, off, count, \
221 sizeof(struct isku_ ## thingy), ISKU_COMMAND_ ## THINGY); \
224 #define ISKU_SYSFS_RW(thingy, THINGY) \
225 ISKU_SYSFS_R(thingy, THINGY) \
226 ISKU_SYSFS_W(thingy, THINGY)
228 #define ISKU_BIN_ATTR_RW(thingy) \
230 .attr = { .name = #thingy, .mode = 0660 }, \
231 .size = sizeof(struct isku_ ## thingy), \
232 .read = isku_sysfs_read_ ## thingy, \
233 .write = isku_sysfs_write_ ## thingy \
236 #define ISKU_BIN_ATTR_R(thingy) \
238 .attr = { .name = #thingy, .mode = 0440 }, \
239 .size = sizeof(struct isku_ ## thingy), \
240 .read = isku_sysfs_read_ ## thingy, \
243 #define ISKU_BIN_ATTR_W(thingy) \
245 .attr = { .name = #thingy, .mode = 0220 }, \
246 .size = sizeof(struct isku_ ## thingy), \
247 .write = isku_sysfs_write_ ## thingy \
250 ISKU_SYSFS_RW(macro, MACRO)
251 ISKU_SYSFS_RW(keys_function, KEYS_FUNCTION)
252 ISKU_SYSFS_RW(keys_easyzone, KEYS_EASYZONE)
253 ISKU_SYSFS_RW(keys_media, KEYS_MEDIA)
254 ISKU_SYSFS_RW(keys_thumbster, KEYS_THUMBSTER)
255 ISKU_SYSFS_RW(keys_macro, KEYS_MACRO)
256 ISKU_SYSFS_RW(keys_capslock, KEYS_CAPSLOCK)
257 ISKU_SYSFS_RW(light, LIGHT)
258 ISKU_SYSFS_RW(key_mask, KEY_MASK)
259 ISKU_SYSFS_RW(last_set, LAST_SET)
260 ISKU_SYSFS_W(talk, TALK)
261 ISKU_SYSFS_R(info, INFO)
262 ISKU_SYSFS_W(control, CONTROL)
264 static struct bin_attribute isku_bin_attributes[] = {
265 ISKU_BIN_ATTR_RW(macro),
266 ISKU_BIN_ATTR_RW(keys_function),
267 ISKU_BIN_ATTR_RW(keys_easyzone),
268 ISKU_BIN_ATTR_RW(keys_media),
269 ISKU_BIN_ATTR_RW(keys_thumbster),
270 ISKU_BIN_ATTR_RW(keys_macro),
271 ISKU_BIN_ATTR_RW(keys_capslock),
272 ISKU_BIN_ATTR_RW(light),
273 ISKU_BIN_ATTR_RW(key_mask),
274 ISKU_BIN_ATTR_RW(last_set),
275 ISKU_BIN_ATTR_W(talk),
276 ISKU_BIN_ATTR_R(info),
277 ISKU_BIN_ATTR_W(control),
278 __ATTR_NULL
281 static int isku_init_isku_device_struct(struct usb_device *usb_dev,
282 struct isku_device *isku)
284 int retval;
286 mutex_init(&isku->isku_lock);
288 retval = isku_get_actual_profile(usb_dev);
289 if (retval < 0)
290 return retval;
291 isku_profile_activated(isku, retval);
293 return 0;
296 static int isku_init_specials(struct hid_device *hdev)
298 struct usb_interface *intf = to_usb_interface(hdev->dev.parent);
299 struct usb_device *usb_dev = interface_to_usbdev(intf);
300 struct isku_device *isku;
301 int retval;
303 if (intf->cur_altsetting->desc.bInterfaceProtocol
304 != ISKU_USB_INTERFACE_PROTOCOL) {
305 hid_set_drvdata(hdev, NULL);
306 return 0;
309 isku = kzalloc(sizeof(*isku), GFP_KERNEL);
310 if (!isku) {
311 hid_err(hdev, "can't alloc device descriptor\n");
312 return -ENOMEM;
314 hid_set_drvdata(hdev, isku);
316 retval = isku_init_isku_device_struct(usb_dev, isku);
317 if (retval) {
318 hid_err(hdev, "couldn't init struct isku_device\n");
319 goto exit_free;
322 retval = roccat_connect(isku_class, hdev,
323 sizeof(struct isku_roccat_report));
324 if (retval < 0) {
325 hid_err(hdev, "couldn't init char dev\n");
326 } else {
327 isku->chrdev_minor = retval;
328 isku->roccat_claimed = 1;
331 return 0;
332 exit_free:
333 kfree(isku);
334 return retval;
337 static void isku_remove_specials(struct hid_device *hdev)
339 struct usb_interface *intf = to_usb_interface(hdev->dev.parent);
340 struct isku_device *isku;
342 if (intf->cur_altsetting->desc.bInterfaceProtocol
343 != ISKU_USB_INTERFACE_PROTOCOL)
344 return;
346 isku = hid_get_drvdata(hdev);
347 if (isku->roccat_claimed)
348 roccat_disconnect(isku->chrdev_minor);
349 kfree(isku);
352 static int isku_probe(struct hid_device *hdev,
353 const struct hid_device_id *id)
355 int retval;
357 retval = hid_parse(hdev);
358 if (retval) {
359 hid_err(hdev, "parse failed\n");
360 goto exit;
363 retval = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
364 if (retval) {
365 hid_err(hdev, "hw start failed\n");
366 goto exit;
369 retval = isku_init_specials(hdev);
370 if (retval) {
371 hid_err(hdev, "couldn't install keyboard\n");
372 goto exit_stop;
375 return 0;
377 exit_stop:
378 hid_hw_stop(hdev);
379 exit:
380 return retval;
383 static void isku_remove(struct hid_device *hdev)
385 isku_remove_specials(hdev);
386 hid_hw_stop(hdev);
389 static void isku_keep_values_up_to_date(struct isku_device *isku,
390 u8 const *data)
392 struct isku_report_button const *button_report;
394 switch (data[0]) {
395 case ISKU_REPORT_NUMBER_BUTTON:
396 button_report = (struct isku_report_button const *)data;
397 switch (button_report->event) {
398 case ISKU_REPORT_BUTTON_EVENT_PROFILE:
399 isku_profile_activated(isku, button_report->data1 - 1);
400 break;
402 break;
406 static void isku_report_to_chrdev(struct isku_device const *isku,
407 u8 const *data)
409 struct isku_roccat_report roccat_report;
410 struct isku_report_button const *button_report;
412 if (data[0] != ISKU_REPORT_NUMBER_BUTTON)
413 return;
415 button_report = (struct isku_report_button const *)data;
417 roccat_report.event = button_report->event;
418 roccat_report.data1 = button_report->data1;
419 roccat_report.data2 = button_report->data2;
420 roccat_report.profile = isku->actual_profile + 1;
421 roccat_report_event(isku->chrdev_minor,
422 (uint8_t const *)&roccat_report);
425 static int isku_raw_event(struct hid_device *hdev,
426 struct hid_report *report, u8 *data, int size)
428 struct usb_interface *intf = to_usb_interface(hdev->dev.parent);
429 struct isku_device *isku = hid_get_drvdata(hdev);
431 if (intf->cur_altsetting->desc.bInterfaceProtocol
432 != ISKU_USB_INTERFACE_PROTOCOL)
433 return 0;
435 if (isku == NULL)
436 return 0;
438 isku_keep_values_up_to_date(isku, data);
440 if (isku->roccat_claimed)
441 isku_report_to_chrdev(isku, data);
443 return 0;
446 static const struct hid_device_id isku_devices[] = {
447 { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_ISKU) },
451 MODULE_DEVICE_TABLE(hid, isku_devices);
453 static struct hid_driver isku_driver = {
454 .name = "isku",
455 .id_table = isku_devices,
456 .probe = isku_probe,
457 .remove = isku_remove,
458 .raw_event = isku_raw_event
461 static int __init isku_init(void)
463 int retval;
464 isku_class = class_create(THIS_MODULE, "isku");
465 if (IS_ERR(isku_class))
466 return PTR_ERR(isku_class);
467 isku_class->dev_attrs = isku_attributes;
468 isku_class->dev_bin_attrs = isku_bin_attributes;
470 retval = hid_register_driver(&isku_driver);
471 if (retval)
472 class_destroy(isku_class);
473 return retval;
476 static void __exit isku_exit(void)
478 hid_unregister_driver(&isku_driver);
479 class_destroy(isku_class);
482 module_init(isku_init);
483 module_exit(isku_exit);
485 MODULE_AUTHOR("Stefan Achatz");
486 MODULE_DESCRIPTION("USB Roccat Isku driver");
487 MODULE_LICENSE("GPL v2");