drivers/hid/hid-roccat-koneplus.c

   1 /*
   2  * Roccat Kone[+] 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 Kone[+] is an updated/improved version of the Kone with more memory
  16  * and functionality and without the non-standard behaviours the Kone had.
  17  * KoneXTD has same capabilities but updated sensor.
  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-koneplus.h"
  29
  30 static uint profile_numbers[5] = {0, 1, 2, 3, 4};
  31
  32 static struct class *koneplus_class;
  33
  34 static void koneplus_profile_activated(struct koneplus_device *koneplus,
  35                 uint new_profile)
  36 {
  37         koneplus->actual_profile = new_profile;
  38 }
  39
  40 static int koneplus_send_control(struct usb_device *usb_dev, uint value,
  41                 enum koneplus_control_requests request)
  42 {
  43         struct roccat_common2_control control;
  44
  45         if ((request == KONEPLUS_CONTROL_REQUEST_PROFILE_SETTINGS ||
  46                         request == KONEPLUS_CONTROL_REQUEST_PROFILE_BUTTONS) &&
  47                         value > 4)
  48                 return -EINVAL;
  49
  50         control.command = ROCCAT_COMMON_COMMAND_CONTROL;
  51         control.value = value;
  52         control.request = request;
  53
  54         return roccat_common2_send_with_status(usb_dev,
  55                         ROCCAT_COMMON_COMMAND_CONTROL,
  56                         &control, sizeof(struct roccat_common2_control));
  57 }
  58
  59
  60 /* retval is 0-4 on success, < 0 on error */
  61 static int koneplus_get_actual_profile(struct usb_device *usb_dev)
  62 {
  63         struct koneplus_actual_profile buf;
  64         int retval;
  65
  66         retval = roccat_common2_receive(usb_dev, KONEPLUS_COMMAND_ACTUAL_PROFILE,
  67                         &buf, KONEPLUS_SIZE_ACTUAL_PROFILE);
  68
  69         return retval ? retval : buf.actual_profile;
  70 }
  71
  72 static int koneplus_set_actual_profile(struct usb_device *usb_dev,
  73                 int new_profile)
  74 {
  75         struct koneplus_actual_profile buf;
  76
  77         buf.command = KONEPLUS_COMMAND_ACTUAL_PROFILE;
  78         buf.size = KONEPLUS_SIZE_ACTUAL_PROFILE;
  79         buf.actual_profile = new_profile;
  80
  81         return roccat_common2_send_with_status(usb_dev,
  82                         KONEPLUS_COMMAND_ACTUAL_PROFILE,
  83                         &buf, KONEPLUS_SIZE_ACTUAL_PROFILE);
  84 }
  85
  86 static ssize_t koneplus_sysfs_read(struct file *fp, struct kobject *kobj,
  87                 char *buf, loff_t off, size_t count,
  88                 size_t real_size, uint command)
  89 {
  90         struct device *dev =
  91                         container_of(kobj, struct device, kobj)->parent->parent;
  92         struct koneplus_device *koneplus = hid_get_drvdata(dev_get_drvdata(dev));
  93         struct usb_device *usb_dev = interface_to_usbdev(to_usb_interface(dev));
  94         int retval;
  95
  96         if (off >= real_size)
  97                 return 0;
  98
  99         if (off != 0 || count != real_size)
 100                 return -EINVAL;
 101
 102         mutex_lock(&koneplus->koneplus_lock);
 103         retval = roccat_common2_receive(usb_dev, command, buf, real_size);
 104         mutex_unlock(&koneplus->koneplus_lock);
 105
 106         if (retval)
 107                 return retval;
 108
 109         return real_size;
 110 }
 111
 112 static ssize_t koneplus_sysfs_write(struct file *fp, struct kobject *kobj,
 113                 void const *buf, loff_t off, size_t count,
 114                 size_t real_size, uint command)
 115 {
 116         struct device *dev =
 117                         container_of(kobj, struct device, kobj)->parent->parent;
 118         struct koneplus_device *koneplus = hid_get_drvdata(dev_get_drvdata(dev));
 119         struct usb_device *usb_dev = interface_to_usbdev(to_usb_interface(dev));
 120         int retval;
 121
 122         if (off != 0 || count != real_size)
 123                 return -EINVAL;
 124
 125         mutex_lock(&koneplus->koneplus_lock);
 126         retval = roccat_common2_send_with_status(usb_dev, command,
 127                         buf, real_size);
 128         mutex_unlock(&koneplus->koneplus_lock);
 129
 130         if (retval)
 131                 return retval;
 132
 133         return real_size;
 134 }
 135
 136 #define KONEPLUS_SYSFS_W(thingy, THINGY) \
 137 static ssize_t koneplus_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 koneplus_sysfs_write(fp, kobj, buf, off, count, \
 142                         KONEPLUS_SIZE_ ## THINGY, KONEPLUS_COMMAND_ ## THINGY); \
 143 }
 144
 145 #define KONEPLUS_SYSFS_R(thingy, THINGY) \
 146 static ssize_t koneplus_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 koneplus_sysfs_read(fp, kobj, buf, off, count, \
 151                         KONEPLUS_SIZE_ ## THINGY, KONEPLUS_COMMAND_ ## THINGY); \
 152 }
 153
 154 #define KONEPLUS_SYSFS_RW(thingy, THINGY) \
 155 KONEPLUS_SYSFS_W(thingy, THINGY) \
 156 KONEPLUS_SYSFS_R(thingy, THINGY)
 157
 158 #define KONEPLUS_BIN_ATTRIBUTE_RW(thingy, THINGY) \
 159 KONEPLUS_SYSFS_RW(thingy, THINGY); \
 160 static struct bin_attribute bin_attr_##thingy = { \
 161         .attr = { .name = #thingy, .mode = 0660 }, \
 162         .size = KONEPLUS_SIZE_ ## THINGY, \
 163         .read = koneplus_sysfs_read_ ## thingy, \
 164         .write = koneplus_sysfs_write_ ## thingy \
 165 }
 166
 167 #define KONEPLUS_BIN_ATTRIBUTE_R(thingy, THINGY) \
 168 KONEPLUS_SYSFS_R(thingy, THINGY); \
 169 static struct bin_attribute bin_attr_##thingy = { \
 170         .attr = { .name = #thingy, .mode = 0440 }, \
 171         .size = KONEPLUS_SIZE_ ## THINGY, \
 172         .read = koneplus_sysfs_read_ ## thingy, \
 173 }
 174
 175 #define KONEPLUS_BIN_ATTRIBUTE_W(thingy, THINGY) \
 176 KONEPLUS_SYSFS_W(thingy, THINGY); \
 177 static struct bin_attribute bin_attr_##thingy = { \
 178         .attr = { .name = #thingy, .mode = 0220 }, \
 179         .size = KONEPLUS_SIZE_ ## THINGY, \
 180         .write = koneplus_sysfs_write_ ## thingy \
 181 }
 182 KONEPLUS_BIN_ATTRIBUTE_W(control, CONTROL);
 183 KONEPLUS_BIN_ATTRIBUTE_W(talk, TALK);
 184 KONEPLUS_BIN_ATTRIBUTE_W(macro, MACRO);
 185 KONEPLUS_BIN_ATTRIBUTE_R(tcu_image, TCU_IMAGE);
 186 KONEPLUS_BIN_ATTRIBUTE_RW(info, INFO);
 187 KONEPLUS_BIN_ATTRIBUTE_RW(sensor, SENSOR);
 188 KONEPLUS_BIN_ATTRIBUTE_RW(tcu, TCU);
 189 KONEPLUS_BIN_ATTRIBUTE_RW(profile_settings, PROFILE_SETTINGS);
 190 KONEPLUS_BIN_ATTRIBUTE_RW(profile_buttons, PROFILE_BUTTONS);
 191
 192 static ssize_t koneplus_sysfs_read_profilex_settings(struct file *fp,
 193                 struct kobject *kobj, struct bin_attribute *attr, char *buf,
 194                 loff_t off, size_t count)
 195 {
 196         struct device *dev =
 197                         container_of(kobj, struct device, kobj)->parent->parent;
 198         struct usb_device *usb_dev = interface_to_usbdev(to_usb_interface(dev));
 199         ssize_t retval;
 200
 201         retval = koneplus_send_control(usb_dev, *(uint *)(attr->private),
 202                         KONEPLUS_CONTROL_REQUEST_PROFILE_SETTINGS);
 203         if (retval)
 204                 return retval;
 205
 206         return koneplus_sysfs_read(fp, kobj, buf, off, count,
 207                         KONEPLUS_SIZE_PROFILE_SETTINGS,
 208                         KONEPLUS_COMMAND_PROFILE_SETTINGS);
 209 }
 210
 211 static ssize_t koneplus_sysfs_read_profilex_buttons(struct file *fp,
 212                 struct kobject *kobj, struct bin_attribute *attr, char *buf,
 213                 loff_t off, size_t count)
 214 {
 215         struct device *dev =
 216                         container_of(kobj, struct device, kobj)->parent->parent;
 217         struct usb_device *usb_dev = interface_to_usbdev(to_usb_interface(dev));
 218         ssize_t retval;
 219
 220         retval = koneplus_send_control(usb_dev, *(uint *)(attr->private),
 221                         KONEPLUS_CONTROL_REQUEST_PROFILE_BUTTONS);
 222         if (retval)
 223                 return retval;
 224
 225         return koneplus_sysfs_read(fp, kobj, buf, off, count,
 226                         KONEPLUS_SIZE_PROFILE_BUTTONS,
 227                         KONEPLUS_COMMAND_PROFILE_BUTTONS);
 228 }
 229
 230 #define PROFILE_ATTR(number)                                            \
 231 static struct bin_attribute bin_attr_profile##number##_settings = {     \
 232         .attr = { .name = "profile" #number "_settings", .mode = 0440 },        \
 233         .size = KONEPLUS_SIZE_PROFILE_SETTINGS,                         \
 234         .read = koneplus_sysfs_read_profilex_settings,                  \
 235         .private = &profile_numbers[number-1],                          \
 236 };                                                                      \
 237 static struct bin_attribute bin_attr_profile##number##_buttons = {      \
 238         .attr = { .name = "profile" #number "_buttons", .mode = 0440 }, \
 239         .size = KONEPLUS_SIZE_PROFILE_BUTTONS,                          \
 240         .read = koneplus_sysfs_read_profilex_buttons,                   \
 241         .private = &profile_numbers[number-1],                          \
 242 };
 243 PROFILE_ATTR(1);
 244 PROFILE_ATTR(2);
 245 PROFILE_ATTR(3);
 246 PROFILE_ATTR(4);
 247 PROFILE_ATTR(5);
 248
 249 static ssize_t koneplus_sysfs_show_actual_profile(struct device *dev,
 250                 struct device_attribute *attr, char *buf)
 251 {
 252         struct koneplus_device *koneplus =
 253                         hid_get_drvdata(dev_get_drvdata(dev->parent->parent));
 254         return snprintf(buf, PAGE_SIZE, "%d\n", koneplus->actual_profile);
 255 }
 256
 257 static ssize_t koneplus_sysfs_set_actual_profile(struct device *dev,
 258                 struct device_attribute *attr, char const *buf, size_t size)
 259 {
 260         struct koneplus_device *koneplus;
 261         struct usb_device *usb_dev;
 262         unsigned long profile;
 263         int retval;
 264         struct koneplus_roccat_report roccat_report;
 265
 266         dev = dev->parent->parent;
 267         koneplus = hid_get_drvdata(dev_get_drvdata(dev));
 268         usb_dev = interface_to_usbdev(to_usb_interface(dev));
 269
 270         retval = kstrtoul(buf, 10, &profile);
 271         if (retval)
 272                 return retval;
 273
 274         if (profile > 4)
 275                 return -EINVAL;
 276
 277         mutex_lock(&koneplus->koneplus_lock);
 278
 279         retval = koneplus_set_actual_profile(usb_dev, profile);
 280         if (retval) {
 281                 mutex_unlock(&koneplus->koneplus_lock);
 282                 return retval;
 283         }
 284
 285         koneplus_profile_activated(koneplus, profile);
 286
 287         roccat_report.type = KONEPLUS_MOUSE_REPORT_BUTTON_TYPE_PROFILE;
 288         roccat_report.data1 = profile + 1;
 289         roccat_report.data2 = 0;
 290         roccat_report.profile = profile + 1;
 291         roccat_report_event(koneplus->chrdev_minor,
 292                         (uint8_t const *)&roccat_report);
 293
 294         mutex_unlock(&koneplus->koneplus_lock);
 295
 296         return size;
 297 }
 298 static DEVICE_ATTR(actual_profile, 0660,
 299                    koneplus_sysfs_show_actual_profile,
 300                    koneplus_sysfs_set_actual_profile);
 301 static DEVICE_ATTR(startup_profile, 0660,
 302                    koneplus_sysfs_show_actual_profile,
 303                    koneplus_sysfs_set_actual_profile);
 304
 305 static ssize_t koneplus_sysfs_show_firmware_version(struct device *dev,
 306                 struct device_attribute *attr, char *buf)
 307 {
 308         struct koneplus_device *koneplus;
 309         struct usb_device *usb_dev;
 310         struct koneplus_info info;
 311
 312         dev = dev->parent->parent;
 313         koneplus = hid_get_drvdata(dev_get_drvdata(dev));
 314         usb_dev = interface_to_usbdev(to_usb_interface(dev));
 315
 316         mutex_lock(&koneplus->koneplus_lock);
 317         roccat_common2_receive(usb_dev, KONEPLUS_COMMAND_INFO,
 318                         &info, KONEPLUS_SIZE_INFO);
 319         mutex_unlock(&koneplus->koneplus_lock);
 320
 321         return snprintf(buf, PAGE_SIZE, "%d\n", info.firmware_version);
 322 }
 323 static DEVICE_ATTR(firmware_version, 0440,
 324                    koneplus_sysfs_show_firmware_version, NULL);
 325
 326 static struct attribute *koneplus_attrs[] = {
 327         &dev_attr_actual_profile.attr,
 328         &dev_attr_startup_profile.attr,
 329         &dev_attr_firmware_version.attr,
 330         NULL,
 331 };
 332
 333 static struct bin_attribute *koneplus_bin_attributes[] = {
 334         &bin_attr_control,
 335         &bin_attr_talk,
 336         &bin_attr_macro,
 337         &bin_attr_tcu_image,
 338         &bin_attr_info,
 339         &bin_attr_sensor,
 340         &bin_attr_tcu,
 341         &bin_attr_profile_settings,
 342         &bin_attr_profile_buttons,
 343         &bin_attr_profile1_settings,
 344         &bin_attr_profile2_settings,
 345         &bin_attr_profile3_settings,
 346         &bin_attr_profile4_settings,
 347         &bin_attr_profile5_settings,
 348         &bin_attr_profile1_buttons,
 349         &bin_attr_profile2_buttons,
 350         &bin_attr_profile3_buttons,
 351         &bin_attr_profile4_buttons,
 352         &bin_attr_profile5_buttons,
 353         NULL,
 354 };
 355
 356 static const struct attribute_group koneplus_group = {
 357         .attrs = koneplus_attrs,
 358         .bin_attrs = koneplus_bin_attributes,
 359 };
 360
 361 static const struct attribute_group *koneplus_groups[] = {
 362         &koneplus_group,
 363         NULL,
 364 };
 365
 366 static int koneplus_init_koneplus_device_struct(struct usb_device *usb_dev,
 367                 struct koneplus_device *koneplus)
 368 {
 369         int retval;
 370
 371         mutex_init(&koneplus->koneplus_lock);
 372
 373         retval = koneplus_get_actual_profile(usb_dev);
 374         if (retval < 0)
 375                 return retval;
 376         koneplus_profile_activated(koneplus, retval);
 377
 378         return 0;
 379 }
 380
 381 static int koneplus_init_specials(struct hid_device *hdev)
 382 {
 383         struct usb_interface *intf = to_usb_interface(hdev->dev.parent);
 384         struct usb_device *usb_dev = interface_to_usbdev(intf);
 385         struct koneplus_device *koneplus;
 386         int retval;
 387
 388         if (intf->cur_altsetting->desc.bInterfaceProtocol
 389                         == USB_INTERFACE_PROTOCOL_MOUSE) {
 390
 391                 koneplus = kzalloc(sizeof(*koneplus), GFP_KERNEL);
 392                 if (!koneplus) {
 393                         hid_err(hdev, "can't alloc device descriptor\n");
 394                         return -ENOMEM;
 395                 }
 396                 hid_set_drvdata(hdev, koneplus);
 397
 398                 retval = koneplus_init_koneplus_device_struct(usb_dev, koneplus);
 399                 if (retval) {
 400                         hid_err(hdev, "couldn't init struct koneplus_device\n");
 401                         goto exit_free;
 402                 }
 403
 404                 retval = roccat_connect(koneplus_class, hdev,
 405                                 sizeof(struct koneplus_roccat_report));
 406                 if (retval < 0) {
 407                         hid_err(hdev, "couldn't init char dev\n");
 408                 } else {
 409                         koneplus->chrdev_minor = retval;
 410                         koneplus->roccat_claimed = 1;
 411                 }
 412         } else {
 413                 hid_set_drvdata(hdev, NULL);
 414         }
 415
 416         return 0;
 417 exit_free:
 418         kfree(koneplus);
 419         return retval;
 420 }
 421
 422 static void koneplus_remove_specials(struct hid_device *hdev)
 423 {
 424         struct usb_interface *intf = to_usb_interface(hdev->dev.parent);
 425         struct koneplus_device *koneplus;
 426
 427         if (intf->cur_altsetting->desc.bInterfaceProtocol
 428                         == USB_INTERFACE_PROTOCOL_MOUSE) {
 429                 koneplus = hid_get_drvdata(hdev);
 430                 if (koneplus->roccat_claimed)
 431                         roccat_disconnect(koneplus->chrdev_minor);
 432                 kfree(koneplus);
 433         }
 434 }
 435
 436 static int koneplus_probe(struct hid_device *hdev,
 437                 const struct hid_device_id *id)
 438 {
 439         int retval;
 440
 441         retval = hid_parse(hdev);
 442         if (retval) {
 443                 hid_err(hdev, "parse failed\n");
 444                 goto exit;
 445         }
 446
 447         retval = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
 448         if (retval) {
 449                 hid_err(hdev, "hw start failed\n");
 450                 goto exit;
 451         }
 452
 453         retval = koneplus_init_specials(hdev);
 454         if (retval) {
 455                 hid_err(hdev, "couldn't install mouse\n");
 456                 goto exit_stop;
 457         }
 458
 459         return 0;
 460
 461 exit_stop:
 462         hid_hw_stop(hdev);
 463 exit:
 464         return retval;
 465 }
 466
 467 static void koneplus_remove(struct hid_device *hdev)
 468 {
 469         koneplus_remove_specials(hdev);
 470         hid_hw_stop(hdev);
 471 }
 472
 473 static void koneplus_keep_values_up_to_date(struct koneplus_device *koneplus,
 474                 u8 const *data)
 475 {
 476         struct koneplus_mouse_report_button const *button_report;
 477
 478         switch (data[0]) {
 479         case KONEPLUS_MOUSE_REPORT_NUMBER_BUTTON:
 480                 button_report = (struct koneplus_mouse_report_button const *)data;
 481                 switch (button_report->type) {
 482                 case KONEPLUS_MOUSE_REPORT_BUTTON_TYPE_PROFILE:
 483                         koneplus_profile_activated(koneplus, button_report->data1 - 1);
 484                         break;
 485                 }
 486                 break;
 487         }
 488 }
 489
 490 static void koneplus_report_to_chrdev(struct koneplus_device const *koneplus,
 491                 u8 const *data)
 492 {
 493         struct koneplus_roccat_report roccat_report;
 494         struct koneplus_mouse_report_button const *button_report;
 495
 496         if (data[0] != KONEPLUS_MOUSE_REPORT_NUMBER_BUTTON)
 497                 return;
 498
 499         button_report = (struct koneplus_mouse_report_button const *)data;
 500
 501         if ((button_report->type == KONEPLUS_MOUSE_REPORT_BUTTON_TYPE_QUICKLAUNCH ||
 502                         button_report->type == KONEPLUS_MOUSE_REPORT_BUTTON_TYPE_TIMER) &&
 503                         button_report->data2 != KONEPLUS_MOUSE_REPORT_BUTTON_ACTION_PRESS)
 504                 return;
 505
 506         roccat_report.type = button_report->type;
 507         roccat_report.data1 = button_report->data1;
 508         roccat_report.data2 = button_report->data2;
 509         roccat_report.profile = koneplus->actual_profile + 1;
 510         roccat_report_event(koneplus->chrdev_minor,
 511                         (uint8_t const *)&roccat_report);
 512 }
 513
 514 static int koneplus_raw_event(struct hid_device *hdev,
 515                 struct hid_report *report, u8 *data, int size)
 516 {
 517         struct usb_interface *intf = to_usb_interface(hdev->dev.parent);
 518         struct koneplus_device *koneplus = hid_get_drvdata(hdev);
 519
 520         if (intf->cur_altsetting->desc.bInterfaceProtocol
 521                         != USB_INTERFACE_PROTOCOL_MOUSE)
 522                 return 0;
 523
 524         if (koneplus == NULL)
 525                 return 0;
 526
 527         koneplus_keep_values_up_to_date(koneplus, data);
 528
 529         if (koneplus->roccat_claimed)
 530                 koneplus_report_to_chrdev(koneplus, data);
 531
 532         return 0;
 533 }
 534
 535 static const struct hid_device_id koneplus_devices[] = {
 536         { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_KONEPLUS) },
 537         { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_KONEXTD) },
 538         { }
 539 };
 540
 541 MODULE_DEVICE_TABLE(hid, koneplus_devices);
 542
 543 static struct hid_driver koneplus_driver = {
 544                 .name = "koneplus",
 545                 .id_table = koneplus_devices,
 546                 .probe = koneplus_probe,
 547                 .remove = koneplus_remove,
 548                 .raw_event = koneplus_raw_event
 549 };
 550
 551 static int __init koneplus_init(void)
 552 {
 553         int retval;
 554
 555         /* class name has to be same as driver name */
 556         koneplus_class = class_create(THIS_MODULE, "koneplus");
 557         if (IS_ERR(koneplus_class))
 558                 return PTR_ERR(koneplus_class);
 559         koneplus_class->dev_groups = koneplus_groups;
 560
 561         retval = hid_register_driver(&koneplus_driver);
 562         if (retval)
 563                 class_destroy(koneplus_class);
 564         return retval;
 565 }
 566
 567 static void __exit koneplus_exit(void)
 568 {
 569         hid_unregister_driver(&koneplus_driver);
 570         class_destroy(koneplus_class);
 571 }
 572
 573 module_init(koneplus_init);
 574 module_exit(koneplus_exit);
 575
 576 MODULE_AUTHOR("Stefan Achatz");
 577 MODULE_DESCRIPTION("USB Roccat Kone[+]/XTD driver");
 578 MODULE_LICENSE("GPL v2");