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 ISKU_SIZE_ ## 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 ISKU_SIZE_ ## 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, THINGY) \ 187 { \ 188 .attr = { .name = #thingy, .mode = 0660 }, \ 189 .size = ISKU_SIZE_ ## THINGY, \ 190 .read = isku_sysfs_read_ ## thingy, \ 191 .write = isku_sysfs_write_ ## thingy \ 192 } 193 194 #define ISKU_BIN_ATTR_R(thingy, THINGY) \ 195 { \ 196 .attr = { .name = #thingy, .mode = 0440 }, \ 197 .size = ISKU_SIZE_ ## THINGY, \ 198 .read = isku_sysfs_read_ ## thingy, \ 199 } 200 201 #define ISKU_BIN_ATTR_W(thingy, THINGY) \ 202 { \ 203 .attr = { .name = #thingy, .mode = 0220 }, \ 204 .size = ISKU_SIZE_ ## 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 ISKU_SYSFS_W(reset, RESET) 222 223 static struct bin_attribute isku_bin_attributes[] = { 224 ISKU_BIN_ATTR_RW(macro, MACRO), 225 ISKU_BIN_ATTR_RW(keys_function, KEYS_FUNCTION), 226 ISKU_BIN_ATTR_RW(keys_easyzone, KEYS_EASYZONE), 227 ISKU_BIN_ATTR_RW(keys_media, KEYS_MEDIA), 228 ISKU_BIN_ATTR_RW(keys_thumbster, KEYS_THUMBSTER), 229 ISKU_BIN_ATTR_RW(keys_macro, KEYS_MACRO), 230 ISKU_BIN_ATTR_RW(keys_capslock, KEYS_CAPSLOCK), 231 ISKU_BIN_ATTR_RW(light, LIGHT), 232 ISKU_BIN_ATTR_RW(key_mask, KEY_MASK), 233 ISKU_BIN_ATTR_RW(last_set, LAST_SET), 234 ISKU_BIN_ATTR_W(talk, TALK), 235 ISKU_BIN_ATTR_R(info, INFO), 236 ISKU_BIN_ATTR_W(control, CONTROL), 237 ISKU_BIN_ATTR_W(reset, RESET), 238 __ATTR_NULL 239 }; 240 241 static int isku_init_isku_device_struct(struct usb_device *usb_dev, 242 struct isku_device *isku) 243 { 244 int retval; 245 246 mutex_init(&isku->isku_lock); 247 248 retval = isku_get_actual_profile(usb_dev); 249 if (retval < 0) 250 return retval; 251 isku_profile_activated(isku, retval); 252 253 return 0; 254 } 255 256 static int isku_init_specials(struct hid_device *hdev) 257 { 258 struct usb_interface *intf = to_usb_interface(hdev->dev.parent); 259 struct usb_device *usb_dev = interface_to_usbdev(intf); 260 struct isku_device *isku; 261 int retval; 262 263 if (intf->cur_altsetting->desc.bInterfaceProtocol 264 != ISKU_USB_INTERFACE_PROTOCOL) { 265 hid_set_drvdata(hdev, NULL); 266 return 0; 267 } 268 269 isku = kzalloc(sizeof(*isku), GFP_KERNEL); 270 if (!isku) { 271 hid_err(hdev, "can't alloc device descriptor\n"); 272 return -ENOMEM; 273 } 274 hid_set_drvdata(hdev, isku); 275 276 retval = isku_init_isku_device_struct(usb_dev, isku); 277 if (retval) { 278 hid_err(hdev, "couldn't init struct isku_device\n"); 279 goto exit_free; 280 } 281 282 retval = roccat_connect(isku_class, hdev, 283 sizeof(struct isku_roccat_report)); 284 if (retval < 0) { 285 hid_err(hdev, "couldn't init char dev\n"); 286 } else { 287 isku->chrdev_minor = retval; 288 isku->roccat_claimed = 1; 289 } 290 291 return 0; 292 exit_free: 293 kfree(isku); 294 return retval; 295 } 296 297 static void isku_remove_specials(struct hid_device *hdev) 298 { 299 struct usb_interface *intf = to_usb_interface(hdev->dev.parent); 300 struct isku_device *isku; 301 302 if (intf->cur_altsetting->desc.bInterfaceProtocol 303 != ISKU_USB_INTERFACE_PROTOCOL) 304 return; 305 306 isku = hid_get_drvdata(hdev); 307 if (isku->roccat_claimed) 308 roccat_disconnect(isku->chrdev_minor); 309 kfree(isku); 310 } 311 312 static int isku_probe(struct hid_device *hdev, 313 const struct hid_device_id *id) 314 { 315 int retval; 316 317 retval = hid_parse(hdev); 318 if (retval) { 319 hid_err(hdev, "parse failed\n"); 320 goto exit; 321 } 322 323 retval = hid_hw_start(hdev, HID_CONNECT_DEFAULT); 324 if (retval) { 325 hid_err(hdev, "hw start failed\n"); 326 goto exit; 327 } 328 329 retval = isku_init_specials(hdev); 330 if (retval) { 331 hid_err(hdev, "couldn't install keyboard\n"); 332 goto exit_stop; 333 } 334 335 return 0; 336 337 exit_stop: 338 hid_hw_stop(hdev); 339 exit: 340 return retval; 341 } 342 343 static void isku_remove(struct hid_device *hdev) 344 { 345 isku_remove_specials(hdev); 346 hid_hw_stop(hdev); 347 } 348 349 static void isku_keep_values_up_to_date(struct isku_device *isku, 350 u8 const *data) 351 { 352 struct isku_report_button const *button_report; 353 354 switch (data[0]) { 355 case ISKU_REPORT_NUMBER_BUTTON: 356 button_report = (struct isku_report_button const *)data; 357 switch (button_report->event) { 358 case ISKU_REPORT_BUTTON_EVENT_PROFILE: 359 isku_profile_activated(isku, button_report->data1 - 1); 360 break; 361 } 362 break; 363 } 364 } 365 366 static void isku_report_to_chrdev(struct isku_device const *isku, 367 u8 const *data) 368 { 369 struct isku_roccat_report roccat_report; 370 struct isku_report_button const *button_report; 371 372 if (data[0] != ISKU_REPORT_NUMBER_BUTTON) 373 return; 374 375 button_report = (struct isku_report_button const *)data; 376 377 roccat_report.event = button_report->event; 378 roccat_report.data1 = button_report->data1; 379 roccat_report.data2 = button_report->data2; 380 roccat_report.profile = isku->actual_profile + 1; 381 roccat_report_event(isku->chrdev_minor, 382 (uint8_t const *)&roccat_report); 383 } 384 385 static int isku_raw_event(struct hid_device *hdev, 386 struct hid_report *report, u8 *data, int size) 387 { 388 struct usb_interface *intf = to_usb_interface(hdev->dev.parent); 389 struct isku_device *isku = hid_get_drvdata(hdev); 390 391 if (intf->cur_altsetting->desc.bInterfaceProtocol 392 != ISKU_USB_INTERFACE_PROTOCOL) 393 return 0; 394 395 if (isku == NULL) 396 return 0; 397 398 isku_keep_values_up_to_date(isku, data); 399 400 if (isku->roccat_claimed) 401 isku_report_to_chrdev(isku, data); 402 403 return 0; 404 } 405 406 static const struct hid_device_id isku_devices[] = { 407 { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_ISKU) }, 408 { } 409 }; 410 411 MODULE_DEVICE_TABLE(hid, isku_devices); 412 413 static struct hid_driver isku_driver = { 414 .name = "isku", 415 .id_table = isku_devices, 416 .probe = isku_probe, 417 .remove = isku_remove, 418 .raw_event = isku_raw_event 419 }; 420 421 static int __init isku_init(void) 422 { 423 int retval; 424 isku_class = class_create(THIS_MODULE, "isku"); 425 if (IS_ERR(isku_class)) 426 return PTR_ERR(isku_class); 427 isku_class->dev_attrs = isku_attributes; 428 isku_class->dev_bin_attrs = isku_bin_attributes; 429 430 retval = hid_register_driver(&isku_driver); 431 if (retval) 432 class_destroy(isku_class); 433 return retval; 434 } 435 436 static void __exit isku_exit(void) 437 { 438 hid_unregister_driver(&isku_driver); 439 class_destroy(isku_class); 440 } 441 442 module_init(isku_init); 443 module_exit(isku_exit); 444 445 MODULE_AUTHOR("Stefan Achatz"); 446 MODULE_DESCRIPTION("USB Roccat Isku driver"); 447 MODULE_LICENSE("GPL v2"); 448