Version:  2.0.40 2.2.26 2.4.37 3.1 3.2 3.3 3.4 3.5 3.6 3.7 3.8 3.9 3.10 3.11 3.12 3.13 3.14 3.15 3.16 3.17

Linux/drivers/hid/hid-roccat-pyra.c

  1 /*
  2  * Roccat Pyra driver for Linux
  3  *
  4  * Copyright (c) 2010 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 Pyra is a mobile gamer mouse which comes in wired and wireless
 16  * variant. Wireless variant is not tested.
 17  * Userland tools can be found at http://sourceforge.net/projects/roccat
 18  */
 19 
 20 #include <linux/device.h>
 21 #include <linux/input.h>
 22 #include <linux/hid.h>
 23 #include <linux/module.h>
 24 #include <linux/slab.h>
 25 #include <linux/hid-roccat.h>
 26 #include "hid-ids.h"
 27 #include "hid-roccat-common.h"
 28 #include "hid-roccat-pyra.h"
 29 
 30 static uint profile_numbers[5] = {0, 1, 2, 3, 4};
 31 
 32 /* pyra_class is used for creating sysfs attributes via roccat char device */
 33 static struct class *pyra_class;
 34 
 35 static void profile_activated(struct pyra_device *pyra,
 36                 unsigned int new_profile)
 37 {
 38         pyra->actual_profile = new_profile;
 39         pyra->actual_cpi = pyra->profile_settings[pyra->actual_profile].y_cpi;
 40 }
 41 
 42 static int pyra_send_control(struct usb_device *usb_dev, int value,
 43                 enum pyra_control_requests request)
 44 {
 45         struct roccat_common2_control control;
 46 
 47         if ((request == PYRA_CONTROL_REQUEST_PROFILE_SETTINGS ||
 48                         request == PYRA_CONTROL_REQUEST_PROFILE_BUTTONS) &&
 49                         (value < 0 || value > 4))
 50                 return -EINVAL;
 51 
 52         control.command = ROCCAT_COMMON_COMMAND_CONTROL;
 53         control.value = value;
 54         control.request = request;
 55 
 56         return roccat_common2_send(usb_dev, ROCCAT_COMMON_COMMAND_CONTROL,
 57                         &control, sizeof(struct roccat_common2_control));
 58 }
 59 
 60 static int pyra_get_profile_settings(struct usb_device *usb_dev,
 61                 struct pyra_profile_settings *buf, int number)
 62 {
 63         int retval;
 64         retval = pyra_send_control(usb_dev, number,
 65                         PYRA_CONTROL_REQUEST_PROFILE_SETTINGS);
 66         if (retval)
 67                 return retval;
 68         return roccat_common2_receive(usb_dev, PYRA_COMMAND_PROFILE_SETTINGS,
 69                         buf, PYRA_SIZE_PROFILE_SETTINGS);
 70 }
 71 
 72 static int pyra_get_settings(struct usb_device *usb_dev,
 73                 struct pyra_settings *buf)
 74 {
 75         return roccat_common2_receive(usb_dev, PYRA_COMMAND_SETTINGS,
 76                         buf, PYRA_SIZE_SETTINGS);
 77 }
 78 
 79 static int pyra_set_settings(struct usb_device *usb_dev,
 80                 struct pyra_settings const *settings)
 81 {
 82         return roccat_common2_send_with_status(usb_dev,
 83                         PYRA_COMMAND_SETTINGS, settings,
 84                         PYRA_SIZE_SETTINGS);
 85 }
 86 
 87 static ssize_t pyra_sysfs_read(struct file *fp, struct kobject *kobj,
 88                 char *buf, loff_t off, size_t count,
 89                 size_t real_size, uint command)
 90 {
 91         struct device *dev =
 92                         container_of(kobj, struct device, kobj)->parent->parent;
 93         struct pyra_device *pyra = hid_get_drvdata(dev_get_drvdata(dev));
 94         struct usb_device *usb_dev = interface_to_usbdev(to_usb_interface(dev));
 95         int retval;
 96 
 97         if (off >= real_size)
 98                 return 0;
 99 
100         if (off != 0 || count != real_size)
101                 return -EINVAL;
102 
103         mutex_lock(&pyra->pyra_lock);
104         retval = roccat_common2_receive(usb_dev, command, buf, real_size);
105         mutex_unlock(&pyra->pyra_lock);
106 
107         if (retval)
108                 return retval;
109 
110         return real_size;
111 }
112 
113 static ssize_t pyra_sysfs_write(struct file *fp, struct kobject *kobj,
114                 void const *buf, loff_t off, size_t count,
115                 size_t real_size, uint command)
116 {
117         struct device *dev =
118                         container_of(kobj, struct device, kobj)->parent->parent;
119         struct pyra_device *pyra = hid_get_drvdata(dev_get_drvdata(dev));
120         struct usb_device *usb_dev = interface_to_usbdev(to_usb_interface(dev));
121         int retval;
122 
123         if (off != 0 || count != real_size)
124                 return -EINVAL;
125 
126         mutex_lock(&pyra->pyra_lock);
127         retval = roccat_common2_send_with_status(usb_dev, command, (void *)buf, real_size);
128         mutex_unlock(&pyra->pyra_lock);
129 
130         if (retval)
131                 return retval;
132 
133         return real_size;
134 }
135 
136 #define PYRA_SYSFS_W(thingy, THINGY) \
137 static ssize_t pyra_sysfs_write_ ## thingy(struct file *fp, \
138                 struct kobject *kobj, struct bin_attribute *attr, char *buf, \
139                 loff_t off, size_t count) \
140 { \
141         return pyra_sysfs_write(fp, kobj, buf, off, count, \
142                         PYRA_SIZE_ ## THINGY, PYRA_COMMAND_ ## THINGY); \
143 }
144 
145 #define PYRA_SYSFS_R(thingy, THINGY) \
146 static ssize_t pyra_sysfs_read_ ## thingy(struct file *fp, \
147                 struct kobject *kobj, struct bin_attribute *attr, char *buf, \
148                 loff_t off, size_t count) \
149 { \
150         return pyra_sysfs_read(fp, kobj, buf, off, count, \
151                         PYRA_SIZE_ ## THINGY, PYRA_COMMAND_ ## THINGY); \
152 }
153 
154 #define PYRA_SYSFS_RW(thingy, THINGY) \
155 PYRA_SYSFS_W(thingy, THINGY) \
156 PYRA_SYSFS_R(thingy, THINGY)
157 
158 #define PYRA_BIN_ATTRIBUTE_RW(thingy, THINGY) \
159 PYRA_SYSFS_RW(thingy, THINGY); \
160 static struct bin_attribute bin_attr_##thingy = { \
161         .attr = { .name = #thingy, .mode = 0660 }, \
162         .size = PYRA_SIZE_ ## THINGY, \
163         .read = pyra_sysfs_read_ ## thingy, \
164         .write = pyra_sysfs_write_ ## thingy \
165 }
166 
167 #define PYRA_BIN_ATTRIBUTE_R(thingy, THINGY) \
168 PYRA_SYSFS_R(thingy, THINGY); \
169 static struct bin_attribute bin_attr_##thingy = { \
170         .attr = { .name = #thingy, .mode = 0440 }, \
171         .size = PYRA_SIZE_ ## THINGY, \
172         .read = pyra_sysfs_read_ ## thingy, \
173 }
174 
175 #define PYRA_BIN_ATTRIBUTE_W(thingy, THINGY) \
176 PYRA_SYSFS_W(thingy, THINGY); \
177 static struct bin_attribute bin_attr_##thingy = { \
178         .attr = { .name = #thingy, .mode = 0220 }, \
179         .size = PYRA_SIZE_ ## THINGY, \
180         .write = pyra_sysfs_write_ ## thingy \
181 }
182 
183 PYRA_BIN_ATTRIBUTE_W(control, CONTROL);
184 PYRA_BIN_ATTRIBUTE_RW(info, INFO);
185 PYRA_BIN_ATTRIBUTE_RW(profile_settings, PROFILE_SETTINGS);
186 PYRA_BIN_ATTRIBUTE_RW(profile_buttons, PROFILE_BUTTONS);
187 
188 static ssize_t pyra_sysfs_read_profilex_settings(struct file *fp,
189                 struct kobject *kobj, struct bin_attribute *attr, char *buf,
190                 loff_t off, size_t count)
191 {
192         struct device *dev =
193                         container_of(kobj, struct device, kobj)->parent->parent;
194         struct usb_device *usb_dev = interface_to_usbdev(to_usb_interface(dev));
195         ssize_t retval;
196 
197         retval = pyra_send_control(usb_dev, *(uint *)(attr->private),
198                         PYRA_CONTROL_REQUEST_PROFILE_SETTINGS);
199         if (retval)
200                 return retval;
201 
202         return pyra_sysfs_read(fp, kobj, buf, off, count,
203                         PYRA_SIZE_PROFILE_SETTINGS,
204                         PYRA_COMMAND_PROFILE_SETTINGS);
205 }
206 
207 static ssize_t pyra_sysfs_read_profilex_buttons(struct file *fp,
208                 struct kobject *kobj, struct bin_attribute *attr, char *buf,
209                 loff_t off, size_t count)
210 {
211         struct device *dev =
212                         container_of(kobj, struct device, kobj)->parent->parent;
213         struct usb_device *usb_dev = interface_to_usbdev(to_usb_interface(dev));
214         ssize_t retval;
215 
216         retval = pyra_send_control(usb_dev, *(uint *)(attr->private),
217                         PYRA_CONTROL_REQUEST_PROFILE_BUTTONS);
218         if (retval)
219                 return retval;
220 
221         return pyra_sysfs_read(fp, kobj, buf, off, count,
222                         PYRA_SIZE_PROFILE_BUTTONS,
223                         PYRA_COMMAND_PROFILE_BUTTONS);
224 }
225 
226 #define PROFILE_ATTR(number)                                            \
227 static struct bin_attribute bin_attr_profile##number##_settings = {     \
228         .attr = { .name = "profile" #number "_settings", .mode = 0440 },        \
229         .size = PYRA_SIZE_PROFILE_SETTINGS,                             \
230         .read = pyra_sysfs_read_profilex_settings,                      \
231         .private = &profile_numbers[number-1],                          \
232 };                                                                      \
233 static struct bin_attribute bin_attr_profile##number##_buttons = {      \
234         .attr = { .name = "profile" #number "_buttons", .mode = 0440 }, \
235         .size = PYRA_SIZE_PROFILE_BUTTONS,                              \
236         .read = pyra_sysfs_read_profilex_buttons,                       \
237         .private = &profile_numbers[number-1],                          \
238 };
239 PROFILE_ATTR(1);
240 PROFILE_ATTR(2);
241 PROFILE_ATTR(3);
242 PROFILE_ATTR(4);
243 PROFILE_ATTR(5);
244 
245 static ssize_t pyra_sysfs_write_settings(struct file *fp,
246                 struct kobject *kobj, struct bin_attribute *attr, char *buf,
247                 loff_t off, size_t count)
248 {
249         struct device *dev =
250                         container_of(kobj, struct device, kobj)->parent->parent;
251         struct pyra_device *pyra = hid_get_drvdata(dev_get_drvdata(dev));
252         struct usb_device *usb_dev = interface_to_usbdev(to_usb_interface(dev));
253         int retval = 0;
254         struct pyra_roccat_report roccat_report;
255         struct pyra_settings const *settings;
256 
257         if (off != 0 || count != PYRA_SIZE_SETTINGS)
258                 return -EINVAL;
259 
260         mutex_lock(&pyra->pyra_lock);
261 
262         settings = (struct pyra_settings const *)buf;
263 
264         retval = pyra_set_settings(usb_dev, settings);
265         if (retval) {
266                 mutex_unlock(&pyra->pyra_lock);
267                 return retval;
268         }
269 
270         profile_activated(pyra, settings->startup_profile);
271 
272         roccat_report.type = PYRA_MOUSE_EVENT_BUTTON_TYPE_PROFILE_2;
273         roccat_report.value = settings->startup_profile + 1;
274         roccat_report.key = 0;
275         roccat_report_event(pyra->chrdev_minor,
276                         (uint8_t const *)&roccat_report);
277 
278         mutex_unlock(&pyra->pyra_lock);
279         return PYRA_SIZE_SETTINGS;
280 }
281 
282 PYRA_SYSFS_R(settings, SETTINGS);
283 static struct bin_attribute bin_attr_settings =
284         __BIN_ATTR(settings, (S_IWUSR | S_IRUGO),
285                    pyra_sysfs_read_settings, pyra_sysfs_write_settings,
286                    PYRA_SIZE_SETTINGS);
287 
288 static ssize_t pyra_sysfs_show_actual_cpi(struct device *dev,
289                 struct device_attribute *attr, char *buf)
290 {
291         struct pyra_device *pyra =
292                         hid_get_drvdata(dev_get_drvdata(dev->parent->parent));
293         return snprintf(buf, PAGE_SIZE, "%d\n", pyra->actual_cpi);
294 }
295 static DEVICE_ATTR(actual_cpi, 0440, pyra_sysfs_show_actual_cpi, NULL);
296 
297 static ssize_t pyra_sysfs_show_actual_profile(struct device *dev,
298                 struct device_attribute *attr, char *buf)
299 {
300         struct pyra_device *pyra =
301                         hid_get_drvdata(dev_get_drvdata(dev->parent->parent));
302         struct usb_device *usb_dev = interface_to_usbdev(to_usb_interface(dev));
303         struct pyra_settings settings;
304 
305         mutex_lock(&pyra->pyra_lock);
306         roccat_common2_receive(usb_dev, PYRA_COMMAND_SETTINGS,
307                         &settings, PYRA_SIZE_SETTINGS);
308         mutex_unlock(&pyra->pyra_lock);
309 
310         return snprintf(buf, PAGE_SIZE, "%d\n", settings.startup_profile);
311 }
312 static DEVICE_ATTR(actual_profile, 0440, pyra_sysfs_show_actual_profile, NULL);
313 static DEVICE_ATTR(startup_profile, 0440, pyra_sysfs_show_actual_profile, NULL);
314 
315 static ssize_t pyra_sysfs_show_firmware_version(struct device *dev,
316                 struct device_attribute *attr, char *buf)
317 {
318         struct pyra_device *pyra;
319         struct usb_device *usb_dev;
320         struct pyra_info info;
321 
322         dev = dev->parent->parent;
323         pyra = hid_get_drvdata(dev_get_drvdata(dev));
324         usb_dev = interface_to_usbdev(to_usb_interface(dev));
325 
326         mutex_lock(&pyra->pyra_lock);
327         roccat_common2_receive(usb_dev, PYRA_COMMAND_INFO,
328                         &info, PYRA_SIZE_INFO);
329         mutex_unlock(&pyra->pyra_lock);
330 
331         return snprintf(buf, PAGE_SIZE, "%d\n", info.firmware_version);
332 }
333 static DEVICE_ATTR(firmware_version, 0440, pyra_sysfs_show_firmware_version,
334                    NULL);
335 
336 static struct attribute *pyra_attrs[] = {
337         &dev_attr_actual_cpi.attr,
338         &dev_attr_actual_profile.attr,
339         &dev_attr_firmware_version.attr,
340         &dev_attr_startup_profile.attr,
341         NULL,
342 };
343 
344 static struct bin_attribute *pyra_bin_attributes[] = {
345         &bin_attr_control,
346         &bin_attr_info,
347         &bin_attr_profile_settings,
348         &bin_attr_profile_buttons,
349         &bin_attr_settings,
350         &bin_attr_profile1_settings,
351         &bin_attr_profile2_settings,
352         &bin_attr_profile3_settings,
353         &bin_attr_profile4_settings,
354         &bin_attr_profile5_settings,
355         &bin_attr_profile1_buttons,
356         &bin_attr_profile2_buttons,
357         &bin_attr_profile3_buttons,
358         &bin_attr_profile4_buttons,
359         &bin_attr_profile5_buttons,
360         NULL,
361 };
362 
363 static const struct attribute_group pyra_group = {
364         .attrs = pyra_attrs,
365         .bin_attrs = pyra_bin_attributes,
366 };
367 
368 static const struct attribute_group *pyra_groups[] = {
369         &pyra_group,
370         NULL,
371 };
372 
373 static int pyra_init_pyra_device_struct(struct usb_device *usb_dev,
374                 struct pyra_device *pyra)
375 {
376         struct pyra_settings settings;
377         int retval, i;
378 
379         mutex_init(&pyra->pyra_lock);
380 
381         retval = pyra_get_settings(usb_dev, &settings);
382         if (retval)
383                 return retval;
384 
385         for (i = 0; i < 5; ++i) {
386                 retval = pyra_get_profile_settings(usb_dev,
387                                 &pyra->profile_settings[i], i);
388                 if (retval)
389                         return retval;
390         }
391 
392         profile_activated(pyra, settings.startup_profile);
393 
394         return 0;
395 }
396 
397 static int pyra_init_specials(struct hid_device *hdev)
398 {
399         struct usb_interface *intf = to_usb_interface(hdev->dev.parent);
400         struct usb_device *usb_dev = interface_to_usbdev(intf);
401         struct pyra_device *pyra;
402         int retval;
403 
404         if (intf->cur_altsetting->desc.bInterfaceProtocol
405                         == USB_INTERFACE_PROTOCOL_MOUSE) {
406 
407                 pyra = kzalloc(sizeof(*pyra), GFP_KERNEL);
408                 if (!pyra) {
409                         hid_err(hdev, "can't alloc device descriptor\n");
410                         return -ENOMEM;
411                 }
412                 hid_set_drvdata(hdev, pyra);
413 
414                 retval = pyra_init_pyra_device_struct(usb_dev, pyra);
415                 if (retval) {
416                         hid_err(hdev, "couldn't init struct pyra_device\n");
417                         goto exit_free;
418                 }
419 
420                 retval = roccat_connect(pyra_class, hdev,
421                                 sizeof(struct pyra_roccat_report));
422                 if (retval < 0) {
423                         hid_err(hdev, "couldn't init char dev\n");
424                 } else {
425                         pyra->chrdev_minor = retval;
426                         pyra->roccat_claimed = 1;
427                 }
428         } else {
429                 hid_set_drvdata(hdev, NULL);
430         }
431 
432         return 0;
433 exit_free:
434         kfree(pyra);
435         return retval;
436 }
437 
438 static void pyra_remove_specials(struct hid_device *hdev)
439 {
440         struct usb_interface *intf = to_usb_interface(hdev->dev.parent);
441         struct pyra_device *pyra;
442 
443         if (intf->cur_altsetting->desc.bInterfaceProtocol
444                         == USB_INTERFACE_PROTOCOL_MOUSE) {
445                 pyra = hid_get_drvdata(hdev);
446                 if (pyra->roccat_claimed)
447                         roccat_disconnect(pyra->chrdev_minor);
448                 kfree(hid_get_drvdata(hdev));
449         }
450 }
451 
452 static int pyra_probe(struct hid_device *hdev, const struct hid_device_id *id)
453 {
454         int retval;
455 
456         retval = hid_parse(hdev);
457         if (retval) {
458                 hid_err(hdev, "parse failed\n");
459                 goto exit;
460         }
461 
462         retval = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
463         if (retval) {
464                 hid_err(hdev, "hw start failed\n");
465                 goto exit;
466         }
467 
468         retval = pyra_init_specials(hdev);
469         if (retval) {
470                 hid_err(hdev, "couldn't install mouse\n");
471                 goto exit_stop;
472         }
473         return 0;
474 
475 exit_stop:
476         hid_hw_stop(hdev);
477 exit:
478         return retval;
479 }
480 
481 static void pyra_remove(struct hid_device *hdev)
482 {
483         pyra_remove_specials(hdev);
484         hid_hw_stop(hdev);
485 }
486 
487 static void pyra_keep_values_up_to_date(struct pyra_device *pyra,
488                 u8 const *data)
489 {
490         struct pyra_mouse_event_button const *button_event;
491 
492         switch (data[0]) {
493         case PYRA_MOUSE_REPORT_NUMBER_BUTTON:
494                 button_event = (struct pyra_mouse_event_button const *)data;
495                 switch (button_event->type) {
496                 case PYRA_MOUSE_EVENT_BUTTON_TYPE_PROFILE_2:
497                         profile_activated(pyra, button_event->data1 - 1);
498                         break;
499                 case PYRA_MOUSE_EVENT_BUTTON_TYPE_CPI:
500                         pyra->actual_cpi = button_event->data1;
501                         break;
502                 }
503                 break;
504         }
505 }
506 
507 static void pyra_report_to_chrdev(struct pyra_device const *pyra,
508                 u8 const *data)
509 {
510         struct pyra_roccat_report roccat_report;
511         struct pyra_mouse_event_button const *button_event;
512 
513         if (data[0] != PYRA_MOUSE_REPORT_NUMBER_BUTTON)
514                 return;
515 
516         button_event = (struct pyra_mouse_event_button const *)data;
517 
518         switch (button_event->type) {
519         case PYRA_MOUSE_EVENT_BUTTON_TYPE_PROFILE_2:
520         case PYRA_MOUSE_EVENT_BUTTON_TYPE_CPI:
521                 roccat_report.type = button_event->type;
522                 roccat_report.value = button_event->data1;
523                 roccat_report.key = 0;
524                 roccat_report_event(pyra->chrdev_minor,
525                                 (uint8_t const *)&roccat_report);
526                 break;
527         case PYRA_MOUSE_EVENT_BUTTON_TYPE_MACRO:
528         case PYRA_MOUSE_EVENT_BUTTON_TYPE_SHORTCUT:
529         case PYRA_MOUSE_EVENT_BUTTON_TYPE_QUICKLAUNCH:
530                 if (button_event->data2 == PYRA_MOUSE_EVENT_BUTTON_PRESS) {
531                         roccat_report.type = button_event->type;
532                         roccat_report.key = button_event->data1;
533                         /*
534                          * pyra reports profile numbers with range 1-5.
535                          * Keeping this behaviour.
536                          */
537                         roccat_report.value = pyra->actual_profile + 1;
538                         roccat_report_event(pyra->chrdev_minor,
539                                         (uint8_t const *)&roccat_report);
540                 }
541                 break;
542         }
543 }
544 
545 static int pyra_raw_event(struct hid_device *hdev, struct hid_report *report,
546                 u8 *data, int size)
547 {
548         struct usb_interface *intf = to_usb_interface(hdev->dev.parent);
549         struct pyra_device *pyra = hid_get_drvdata(hdev);
550 
551         if (intf->cur_altsetting->desc.bInterfaceProtocol
552                         != USB_INTERFACE_PROTOCOL_MOUSE)
553                 return 0;
554 
555         if (pyra == NULL)
556                 return 0;
557 
558         pyra_keep_values_up_to_date(pyra, data);
559 
560         if (pyra->roccat_claimed)
561                 pyra_report_to_chrdev(pyra, data);
562 
563         return 0;
564 }
565 
566 static const struct hid_device_id pyra_devices[] = {
567         { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT,
568                         USB_DEVICE_ID_ROCCAT_PYRA_WIRED) },
569         { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT,
570                         USB_DEVICE_ID_ROCCAT_PYRA_WIRELESS) },
571         { }
572 };
573 
574 MODULE_DEVICE_TABLE(hid, pyra_devices);
575 
576 static struct hid_driver pyra_driver = {
577                 .name = "pyra",
578                 .id_table = pyra_devices,
579                 .probe = pyra_probe,
580                 .remove = pyra_remove,
581                 .raw_event = pyra_raw_event
582 };
583 
584 static int __init pyra_init(void)
585 {
586         int retval;
587 
588         /* class name has to be same as driver name */
589         pyra_class = class_create(THIS_MODULE, "pyra");
590         if (IS_ERR(pyra_class))
591                 return PTR_ERR(pyra_class);
592         pyra_class->dev_groups = pyra_groups;
593 
594         retval = hid_register_driver(&pyra_driver);
595         if (retval)
596                 class_destroy(pyra_class);
597         return retval;
598 }
599 
600 static void __exit pyra_exit(void)
601 {
602         hid_unregister_driver(&pyra_driver);
603         class_destroy(pyra_class);
604 }
605 
606 module_init(pyra_init);
607 module_exit(pyra_exit);
608 
609 MODULE_AUTHOR("Stefan Achatz");
610 MODULE_DESCRIPTION("USB Roccat Pyra driver");
611 MODULE_LICENSE("GPL v2");
612 

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