1/* 2 * Copyright (C) 2004 by Jan-Benedict Glaw <jbglaw@lug-owl.de> 3 */ 4 5/* 6 * LK keyboard driver for Linux, based on sunkbd.c (C) by Vojtech Pavlik 7 */ 8 9/* 10 * DEC LK201 and LK401 keyboard driver for Linux (primary for DECstations 11 * and VAXstations, but can also be used on any standard RS232 with an 12 * adaptor). 13 * 14 * DISCLAIMER: This works for _me_. If you break anything by using the 15 * information given below, I will _not_ be liable! 16 * 17 * RJ10 pinout: To DE9: Or DB25: 18 * 1 - RxD <----> Pin 3 (TxD) <-> Pin 2 (TxD) 19 * 2 - GND <----> Pin 5 (GND) <-> Pin 7 (GND) 20 * 4 - TxD <----> Pin 2 (RxD) <-> Pin 3 (RxD) 21 * 3 - +12V (from HDD drive connector), DON'T connect to DE9 or DB25!!! 22 * 23 * Pin numbers for DE9 and DB25 are noted on the plug (quite small:). For 24 * RJ10, it's like this: 25 * 26 * __=__ Hold the plug in front of you, cable downwards, 27 * /___/| nose is hidden behind the plug. Now, pin 1 is at 28 * |1234|| the left side, pin 4 at the right and 2 and 3 are 29 * |IIII|| in between, of course:) 30 * | || 31 * |____|/ 32 * || So the adaptor consists of three connected cables 33 * || for data transmission (RxD and TxD) and signal ground. 34 * Additionally, you have to get +12V from somewhere. 35 * Most easily, you'll get that from a floppy or HDD power connector. 36 * It's the yellow cable there (black is ground and red is +5V). 37 * 38 * The keyboard and all the commands it understands are documented in 39 * "VCB02 Video Subsystem - Technical Manual", EK-104AA-TM-001. This 40 * document is LK201 specific, but LK401 is mostly compatible. It comes 41 * up in LK201 mode and doesn't report any of the additional keys it 42 * has. These need to be switched on with the LK_CMD_ENABLE_LK401 43 * command. You'll find this document (scanned .pdf file) on MANX, 44 * a search engine specific to DEC documentation. Try 45 * http://www.vt100.net/manx/details?pn=EK-104AA-TM-001;id=21;cp=1 46 */ 47 48/* 49 * This program is free software; you can redistribute it and/or modify 50 * it under the terms of the GNU General Public License as published by 51 * the Free Software Foundation; either version 2 of the License, or 52 * (at your option) any later version. 53 * 54 * This program is distributed in the hope that it will be useful, 55 * but WITHOUT ANY WARRANTY; without even the implied warranty of 56 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 57 * GNU General Public License for more details. 58 * 59 * You should have received a copy of the GNU General Public License 60 * along with this program; if not, write to the Free Software 61 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 62 */ 63 64#include <linux/delay.h> 65#include <linux/slab.h> 66#include <linux/module.h> 67#include <linux/interrupt.h> 68#include <linux/init.h> 69#include <linux/input.h> 70#include <linux/serio.h> 71#include <linux/workqueue.h> 72 73#define DRIVER_DESC "LK keyboard driver" 74 75MODULE_AUTHOR("Jan-Benedict Glaw <jbglaw@lug-owl.de>"); 76MODULE_DESCRIPTION(DRIVER_DESC); 77MODULE_LICENSE("GPL"); 78 79/* 80 * Known parameters: 81 * bell_volume 82 * keyclick_volume 83 * ctrlclick_volume 84 * 85 * Please notice that there's not yet an API to set these at runtime. 86 */ 87static int bell_volume = 100; /* % */ 88module_param(bell_volume, int, 0); 89MODULE_PARM_DESC(bell_volume, "Bell volume (in %). default is 100%"); 90 91static int keyclick_volume = 100; /* % */ 92module_param(keyclick_volume, int, 0); 93MODULE_PARM_DESC(keyclick_volume, "Keyclick volume (in %), default is 100%"); 94 95static int ctrlclick_volume = 100; /* % */ 96module_param(ctrlclick_volume, int, 0); 97MODULE_PARM_DESC(ctrlclick_volume, "Ctrlclick volume (in %), default is 100%"); 98 99static int lk201_compose_is_alt; 100module_param(lk201_compose_is_alt, int, 0); 101MODULE_PARM_DESC(lk201_compose_is_alt, 102 "If set non-zero, LK201' Compose key will act as an Alt key"); 103 104 105 106#undef LKKBD_DEBUG 107#ifdef LKKBD_DEBUG 108#define DBG(x...) printk(x) 109#else 110#define DBG(x...) do {} while (0) 111#endif 112 113/* LED control */ 114#define LK_LED_WAIT 0x81 115#define LK_LED_COMPOSE 0x82 116#define LK_LED_SHIFTLOCK 0x84 117#define LK_LED_SCROLLLOCK 0x88 118#define LK_CMD_LED_ON 0x13 119#define LK_CMD_LED_OFF 0x11 120 121/* Mode control */ 122#define LK_MODE_DOWN 0x80 123#define LK_MODE_AUTODOWN 0x82 124#define LK_MODE_UPDOWN 0x86 125#define LK_CMD_SET_MODE(mode, div) ((mode) | ((div) << 3)) 126 127/* Misc commands */ 128#define LK_CMD_ENABLE_KEYCLICK 0x1b 129#define LK_CMD_DISABLE_KEYCLICK 0x99 130#define LK_CMD_DISABLE_BELL 0xa1 131#define LK_CMD_SOUND_BELL 0xa7 132#define LK_CMD_ENABLE_BELL 0x23 133#define LK_CMD_DISABLE_CTRCLICK 0xb9 134#define LK_CMD_ENABLE_CTRCLICK 0xbb 135#define LK_CMD_SET_DEFAULTS 0xd3 136#define LK_CMD_POWERCYCLE_RESET 0xfd 137#define LK_CMD_ENABLE_LK401 0xe9 138#define LK_CMD_REQUEST_ID 0xab 139 140/* Misc responses from keyboard */ 141#define LK_STUCK_KEY 0x3d 142#define LK_SELFTEST_FAILED 0x3e 143#define LK_ALL_KEYS_UP 0xb3 144#define LK_METRONOME 0xb4 145#define LK_OUTPUT_ERROR 0xb5 146#define LK_INPUT_ERROR 0xb6 147#define LK_KBD_LOCKED 0xb7 148#define LK_KBD_TEST_MODE_ACK 0xb8 149#define LK_PREFIX_KEY_DOWN 0xb9 150#define LK_MODE_CHANGE_ACK 0xba 151#define LK_RESPONSE_RESERVED 0xbb 152 153#define LK_NUM_KEYCODES 256 154#define LK_NUM_IGNORE_BYTES 6 155 156static unsigned short lkkbd_keycode[LK_NUM_KEYCODES] = { 157 [0x56] = KEY_F1, 158 [0x57] = KEY_F2, 159 [0x58] = KEY_F3, 160 [0x59] = KEY_F4, 161 [0x5a] = KEY_F5, 162 [0x64] = KEY_F6, 163 [0x65] = KEY_F7, 164 [0x66] = KEY_F8, 165 [0x67] = KEY_F9, 166 [0x68] = KEY_F10, 167 [0x71] = KEY_F11, 168 [0x72] = KEY_F12, 169 [0x73] = KEY_F13, 170 [0x74] = KEY_F14, 171 [0x7c] = KEY_F15, 172 [0x7d] = KEY_F16, 173 [0x80] = KEY_F17, 174 [0x81] = KEY_F18, 175 [0x82] = KEY_F19, 176 [0x83] = KEY_F20, 177 [0x8a] = KEY_FIND, 178 [0x8b] = KEY_INSERT, 179 [0x8c] = KEY_DELETE, 180 [0x8d] = KEY_SELECT, 181 [0x8e] = KEY_PAGEUP, 182 [0x8f] = KEY_PAGEDOWN, 183 [0x92] = KEY_KP0, 184 [0x94] = KEY_KPDOT, 185 [0x95] = KEY_KPENTER, 186 [0x96] = KEY_KP1, 187 [0x97] = KEY_KP2, 188 [0x98] = KEY_KP3, 189 [0x99] = KEY_KP4, 190 [0x9a] = KEY_KP5, 191 [0x9b] = KEY_KP6, 192 [0x9c] = KEY_KPCOMMA, 193 [0x9d] = KEY_KP7, 194 [0x9e] = KEY_KP8, 195 [0x9f] = KEY_KP9, 196 [0xa0] = KEY_KPMINUS, 197 [0xa1] = KEY_PROG1, 198 [0xa2] = KEY_PROG2, 199 [0xa3] = KEY_PROG3, 200 [0xa4] = KEY_PROG4, 201 [0xa7] = KEY_LEFT, 202 [0xa8] = KEY_RIGHT, 203 [0xa9] = KEY_DOWN, 204 [0xaa] = KEY_UP, 205 [0xab] = KEY_RIGHTSHIFT, 206 [0xac] = KEY_LEFTALT, 207 [0xad] = KEY_COMPOSE, /* Right Compose, that is. */ 208 [0xae] = KEY_LEFTSHIFT, /* Same as KEY_RIGHTSHIFT on LK201 */ 209 [0xaf] = KEY_LEFTCTRL, 210 [0xb0] = KEY_CAPSLOCK, 211 [0xb1] = KEY_COMPOSE, /* Left Compose, that is. */ 212 [0xb2] = KEY_RIGHTALT, 213 [0xbc] = KEY_BACKSPACE, 214 [0xbd] = KEY_ENTER, 215 [0xbe] = KEY_TAB, 216 [0xbf] = KEY_ESC, 217 [0xc0] = KEY_1, 218 [0xc1] = KEY_Q, 219 [0xc2] = KEY_A, 220 [0xc3] = KEY_Z, 221 [0xc5] = KEY_2, 222 [0xc6] = KEY_W, 223 [0xc7] = KEY_S, 224 [0xc8] = KEY_X, 225 [0xc9] = KEY_102ND, 226 [0xcb] = KEY_3, 227 [0xcc] = KEY_E, 228 [0xcd] = KEY_D, 229 [0xce] = KEY_C, 230 [0xd0] = KEY_4, 231 [0xd1] = KEY_R, 232 [0xd2] = KEY_F, 233 [0xd3] = KEY_V, 234 [0xd4] = KEY_SPACE, 235 [0xd6] = KEY_5, 236 [0xd7] = KEY_T, 237 [0xd8] = KEY_G, 238 [0xd9] = KEY_B, 239 [0xdb] = KEY_6, 240 [0xdc] = KEY_Y, 241 [0xdd] = KEY_H, 242 [0xde] = KEY_N, 243 [0xe0] = KEY_7, 244 [0xe1] = KEY_U, 245 [0xe2] = KEY_J, 246 [0xe3] = KEY_M, 247 [0xe5] = KEY_8, 248 [0xe6] = KEY_I, 249 [0xe7] = KEY_K, 250 [0xe8] = KEY_COMMA, 251 [0xea] = KEY_9, 252 [0xeb] = KEY_O, 253 [0xec] = KEY_L, 254 [0xed] = KEY_DOT, 255 [0xef] = KEY_0, 256 [0xf0] = KEY_P, 257 [0xf2] = KEY_SEMICOLON, 258 [0xf3] = KEY_SLASH, 259 [0xf5] = KEY_EQUAL, 260 [0xf6] = KEY_RIGHTBRACE, 261 [0xf7] = KEY_BACKSLASH, 262 [0xf9] = KEY_MINUS, 263 [0xfa] = KEY_LEFTBRACE, 264 [0xfb] = KEY_APOSTROPHE, 265}; 266 267#define CHECK_LED(LK, VAR_ON, VAR_OFF, LED, BITS) do { \ 268 if (test_bit(LED, (LK)->dev->led)) \ 269 VAR_ON |= BITS; \ 270 else \ 271 VAR_OFF |= BITS; \ 272 } while (0) 273 274/* 275 * Per-keyboard data 276 */ 277struct lkkbd { 278 unsigned short keycode[LK_NUM_KEYCODES]; 279 int ignore_bytes; 280 unsigned char id[LK_NUM_IGNORE_BYTES]; 281 struct input_dev *dev; 282 struct serio *serio; 283 struct work_struct tq; 284 char name[64]; 285 char phys[32]; 286 char type; 287 int bell_volume; 288 int keyclick_volume; 289 int ctrlclick_volume; 290}; 291 292#ifdef LKKBD_DEBUG 293/* 294 * Responses from the keyboard and mapping back to their names. 295 */ 296static struct { 297 unsigned char value; 298 unsigned char *name; 299} lk_response[] = { 300#define RESPONSE(x) { .value = (x), .name = #x, } 301 RESPONSE(LK_STUCK_KEY), 302 RESPONSE(LK_SELFTEST_FAILED), 303 RESPONSE(LK_ALL_KEYS_UP), 304 RESPONSE(LK_METRONOME), 305 RESPONSE(LK_OUTPUT_ERROR), 306 RESPONSE(LK_INPUT_ERROR), 307 RESPONSE(LK_KBD_LOCKED), 308 RESPONSE(LK_KBD_TEST_MODE_ACK), 309 RESPONSE(LK_PREFIX_KEY_DOWN), 310 RESPONSE(LK_MODE_CHANGE_ACK), 311 RESPONSE(LK_RESPONSE_RESERVED), 312#undef RESPONSE 313}; 314 315static unsigned char *response_name(unsigned char value) 316{ 317 int i; 318 319 for (i = 0; i < ARRAY_SIZE(lk_response); i++) 320 if (lk_response[i].value == value) 321 return lk_response[i].name; 322 323 return "<unknown>"; 324} 325#endif /* LKKBD_DEBUG */ 326 327/* 328 * Calculate volume parameter byte for a given volume. 329 */ 330static unsigned char volume_to_hw(int volume_percent) 331{ 332 unsigned char ret = 0; 333 334 if (volume_percent < 0) 335 volume_percent = 0; 336 if (volume_percent > 100) 337 volume_percent = 100; 338 339 if (volume_percent >= 0) 340 ret = 7; 341 if (volume_percent >= 13) /* 12.5 */ 342 ret = 6; 343 if (volume_percent >= 25) 344 ret = 5; 345 if (volume_percent >= 38) /* 37.5 */ 346 ret = 4; 347 if (volume_percent >= 50) 348 ret = 3; 349 if (volume_percent >= 63) /* 62.5 */ 350 ret = 2; /* This is the default volume */ 351 if (volume_percent >= 75) 352 ret = 1; 353 if (volume_percent >= 88) /* 87.5 */ 354 ret = 0; 355 356 ret |= 0x80; 357 358 return ret; 359} 360 361static void lkkbd_detection_done(struct lkkbd *lk) 362{ 363 int i; 364 365 /* 366 * Reset setting for Compose key. Let Compose be KEY_COMPOSE. 367 */ 368 lk->keycode[0xb1] = KEY_COMPOSE; 369 370 /* 371 * Print keyboard name and modify Compose=Alt on user's request. 372 */ 373 switch (lk->id[4]) { 374 case 1: 375 strlcpy(lk->name, "DEC LK201 keyboard", sizeof(lk->name)); 376 377 if (lk201_compose_is_alt) 378 lk->keycode[0xb1] = KEY_LEFTALT; 379 break; 380 381 case 2: 382 strlcpy(lk->name, "DEC LK401 keyboard", sizeof(lk->name)); 383 break; 384 385 default: 386 strlcpy(lk->name, "Unknown DEC keyboard", sizeof(lk->name)); 387 printk(KERN_ERR 388 "lkkbd: keyboard on %s is unknown, please report to " 389 "Jan-Benedict Glaw <jbglaw@lug-owl.de>\n", lk->phys); 390 printk(KERN_ERR "lkkbd: keyboard ID'ed as:"); 391 for (i = 0; i < LK_NUM_IGNORE_BYTES; i++) 392 printk(" 0x%02x", lk->id[i]); 393 printk("\n"); 394 break; 395 } 396 397 printk(KERN_INFO "lkkbd: keyboard on %s identified as: %s\n", 398 lk->phys, lk->name); 399 400 /* 401 * Report errors during keyboard boot-up. 402 */ 403 switch (lk->id[2]) { 404 case 0x00: 405 /* All okay */ 406 break; 407 408 case LK_STUCK_KEY: 409 printk(KERN_ERR "lkkbd: Stuck key on keyboard at %s\n", 410 lk->phys); 411 break; 412 413 case LK_SELFTEST_FAILED: 414 printk(KERN_ERR 415 "lkkbd: Selftest failed on keyboard at %s, " 416 "keyboard may not work properly\n", lk->phys); 417 break; 418 419 default: 420 printk(KERN_ERR 421 "lkkbd: Unknown error %02x on keyboard at %s\n", 422 lk->id[2], lk->phys); 423 break; 424 } 425 426 /* 427 * Try to hint user if there's a stuck key. 428 */ 429 if (lk->id[2] == LK_STUCK_KEY && lk->id[3] != 0) 430 printk(KERN_ERR 431 "Scancode of stuck key is 0x%02x, keycode is 0x%04x\n", 432 lk->id[3], lk->keycode[lk->id[3]]); 433} 434 435/* 436 * lkkbd_interrupt() is called by the low level driver when a character 437 * is received. 438 */ 439static irqreturn_t lkkbd_interrupt(struct serio *serio, 440 unsigned char data, unsigned int flags) 441{ 442 struct lkkbd *lk = serio_get_drvdata(serio); 443 struct input_dev *input_dev = lk->dev; 444 unsigned int keycode; 445 int i; 446 447 DBG(KERN_INFO "Got byte 0x%02x\n", data); 448 449 if (lk->ignore_bytes > 0) { 450 DBG(KERN_INFO "Ignoring a byte on %s\n", lk->name); 451 lk->id[LK_NUM_IGNORE_BYTES - lk->ignore_bytes--] = data; 452 453 if (lk->ignore_bytes == 0) 454 lkkbd_detection_done(lk); 455 456 return IRQ_HANDLED; 457 } 458 459 switch (data) { 460 case LK_ALL_KEYS_UP: 461 for (i = 0; i < ARRAY_SIZE(lkkbd_keycode); i++) 462 input_report_key(input_dev, lk->keycode[i], 0); 463 input_sync(input_dev); 464 break; 465 466 case 0x01: 467 DBG(KERN_INFO "Got 0x01, scheduling re-initialization\n"); 468 lk->ignore_bytes = LK_NUM_IGNORE_BYTES; 469 lk->id[LK_NUM_IGNORE_BYTES - lk->ignore_bytes--] = data; 470 schedule_work(&lk->tq); 471 break; 472 473 case LK_METRONOME: 474 case LK_OUTPUT_ERROR: 475 case LK_INPUT_ERROR: 476 case LK_KBD_LOCKED: 477 case LK_KBD_TEST_MODE_ACK: 478 case LK_PREFIX_KEY_DOWN: 479 case LK_MODE_CHANGE_ACK: 480 case LK_RESPONSE_RESERVED: 481 DBG(KERN_INFO "Got %s and don't know how to handle...\n", 482 response_name(data)); 483 break; 484 485 default: 486 keycode = lk->keycode[data]; 487 if (keycode != KEY_RESERVED) { 488 input_report_key(input_dev, keycode, 489 !test_bit(keycode, input_dev->key)); 490 input_sync(input_dev); 491 } else { 492 printk(KERN_WARNING 493 "%s: Unknown key with scancode 0x%02x on %s.\n", 494 __FILE__, data, lk->name); 495 } 496 } 497 498 return IRQ_HANDLED; 499} 500 501static void lkkbd_toggle_leds(struct lkkbd *lk) 502{ 503 struct serio *serio = lk->serio; 504 unsigned char leds_on = 0; 505 unsigned char leds_off = 0; 506 507 CHECK_LED(lk, leds_on, leds_off, LED_CAPSL, LK_LED_SHIFTLOCK); 508 CHECK_LED(lk, leds_on, leds_off, LED_COMPOSE, LK_LED_COMPOSE); 509 CHECK_LED(lk, leds_on, leds_off, LED_SCROLLL, LK_LED_SCROLLLOCK); 510 CHECK_LED(lk, leds_on, leds_off, LED_SLEEP, LK_LED_WAIT); 511 if (leds_on != 0) { 512 serio_write(serio, LK_CMD_LED_ON); 513 serio_write(serio, leds_on); 514 } 515 if (leds_off != 0) { 516 serio_write(serio, LK_CMD_LED_OFF); 517 serio_write(serio, leds_off); 518 } 519} 520 521static void lkkbd_toggle_keyclick(struct lkkbd *lk, bool on) 522{ 523 struct serio *serio = lk->serio; 524 525 if (on) { 526 DBG("%s: Activating key clicks\n", __func__); 527 serio_write(serio, LK_CMD_ENABLE_KEYCLICK); 528 serio_write(serio, volume_to_hw(lk->keyclick_volume)); 529 serio_write(serio, LK_CMD_ENABLE_CTRCLICK); 530 serio_write(serio, volume_to_hw(lk->ctrlclick_volume)); 531 } else { 532 DBG("%s: Deactivating key clicks\n", __func__); 533 serio_write(serio, LK_CMD_DISABLE_KEYCLICK); 534 serio_write(serio, LK_CMD_DISABLE_CTRCLICK); 535 } 536 537} 538 539/* 540 * lkkbd_event() handles events from the input module. 541 */ 542static int lkkbd_event(struct input_dev *dev, 543 unsigned int type, unsigned int code, int value) 544{ 545 struct lkkbd *lk = input_get_drvdata(dev); 546 547 switch (type) { 548 case EV_LED: 549 lkkbd_toggle_leds(lk); 550 return 0; 551 552 case EV_SND: 553 switch (code) { 554 case SND_CLICK: 555 lkkbd_toggle_keyclick(lk, value); 556 return 0; 557 558 case SND_BELL: 559 if (value != 0) 560 serio_write(lk->serio, LK_CMD_SOUND_BELL); 561 562 return 0; 563 } 564 565 break; 566 567 default: 568 printk(KERN_ERR "%s(): Got unknown type %d, code %d, value %d\n", 569 __func__, type, code, value); 570 } 571 572 return -1; 573} 574 575/* 576 * lkkbd_reinit() sets leds and beeps to a state the computer remembers they 577 * were in. 578 */ 579static void lkkbd_reinit(struct work_struct *work) 580{ 581 struct lkkbd *lk = container_of(work, struct lkkbd, tq); 582 int division; 583 584 /* Ask for ID */ 585 serio_write(lk->serio, LK_CMD_REQUEST_ID); 586 587 /* Reset parameters */ 588 serio_write(lk->serio, LK_CMD_SET_DEFAULTS); 589 590 /* Set LEDs */ 591 lkkbd_toggle_leds(lk); 592 593 /* 594 * Try to activate extended LK401 mode. This command will 595 * only work with a LK401 keyboard and grants access to 596 * LAlt, RAlt, RCompose and RShift. 597 */ 598 serio_write(lk->serio, LK_CMD_ENABLE_LK401); 599 600 /* Set all keys to UPDOWN mode */ 601 for (division = 1; division <= 14; division++) 602 serio_write(lk->serio, 603 LK_CMD_SET_MODE(LK_MODE_UPDOWN, division)); 604 605 /* Enable bell and set volume */ 606 serio_write(lk->serio, LK_CMD_ENABLE_BELL); 607 serio_write(lk->serio, volume_to_hw(lk->bell_volume)); 608 609 /* Enable/disable keyclick (and possibly set volume) */ 610 lkkbd_toggle_keyclick(lk, test_bit(SND_CLICK, lk->dev->snd)); 611 612 /* Sound the bell if needed */ 613 if (test_bit(SND_BELL, lk->dev->snd)) 614 serio_write(lk->serio, LK_CMD_SOUND_BELL); 615} 616 617/* 618 * lkkbd_connect() probes for a LK keyboard and fills the necessary structures. 619 */ 620static int lkkbd_connect(struct serio *serio, struct serio_driver *drv) 621{ 622 struct lkkbd *lk; 623 struct input_dev *input_dev; 624 int i; 625 int err; 626 627 lk = kzalloc(sizeof(struct lkkbd), GFP_KERNEL); 628 input_dev = input_allocate_device(); 629 if (!lk || !input_dev) { 630 err = -ENOMEM; 631 goto fail1; 632 } 633 634 lk->serio = serio; 635 lk->dev = input_dev; 636 INIT_WORK(&lk->tq, lkkbd_reinit); 637 lk->bell_volume = bell_volume; 638 lk->keyclick_volume = keyclick_volume; 639 lk->ctrlclick_volume = ctrlclick_volume; 640 memcpy(lk->keycode, lkkbd_keycode, sizeof(lk->keycode)); 641 642 strlcpy(lk->name, "DEC LK keyboard", sizeof(lk->name)); 643 snprintf(lk->phys, sizeof(lk->phys), "%s/input0", serio->phys); 644 645 input_dev->name = lk->name; 646 input_dev->phys = lk->phys; 647 input_dev->id.bustype = BUS_RS232; 648 input_dev->id.vendor = SERIO_LKKBD; 649 input_dev->id.product = 0; 650 input_dev->id.version = 0x0100; 651 input_dev->dev.parent = &serio->dev; 652 input_dev->event = lkkbd_event; 653 654 input_set_drvdata(input_dev, lk); 655 656 __set_bit(EV_KEY, input_dev->evbit); 657 __set_bit(EV_LED, input_dev->evbit); 658 __set_bit(EV_SND, input_dev->evbit); 659 __set_bit(EV_REP, input_dev->evbit); 660 __set_bit(LED_CAPSL, input_dev->ledbit); 661 __set_bit(LED_SLEEP, input_dev->ledbit); 662 __set_bit(LED_COMPOSE, input_dev->ledbit); 663 __set_bit(LED_SCROLLL, input_dev->ledbit); 664 __set_bit(SND_BELL, input_dev->sndbit); 665 __set_bit(SND_CLICK, input_dev->sndbit); 666 667 input_dev->keycode = lk->keycode; 668 input_dev->keycodesize = sizeof(lk->keycode[0]); 669 input_dev->keycodemax = ARRAY_SIZE(lk->keycode); 670 671 for (i = 0; i < LK_NUM_KEYCODES; i++) 672 __set_bit(lk->keycode[i], input_dev->keybit); 673 __clear_bit(KEY_RESERVED, input_dev->keybit); 674 675 serio_set_drvdata(serio, lk); 676 677 err = serio_open(serio, drv); 678 if (err) 679 goto fail2; 680 681 err = input_register_device(lk->dev); 682 if (err) 683 goto fail3; 684 685 serio_write(lk->serio, LK_CMD_POWERCYCLE_RESET); 686 687 return 0; 688 689 fail3: serio_close(serio); 690 fail2: serio_set_drvdata(serio, NULL); 691 fail1: input_free_device(input_dev); 692 kfree(lk); 693 return err; 694} 695 696/* 697 * lkkbd_disconnect() unregisters and closes behind us. 698 */ 699static void lkkbd_disconnect(struct serio *serio) 700{ 701 struct lkkbd *lk = serio_get_drvdata(serio); 702 703 input_get_device(lk->dev); 704 input_unregister_device(lk->dev); 705 serio_close(serio); 706 serio_set_drvdata(serio, NULL); 707 input_put_device(lk->dev); 708 kfree(lk); 709} 710 711static struct serio_device_id lkkbd_serio_ids[] = { 712 { 713 .type = SERIO_RS232, 714 .proto = SERIO_LKKBD, 715 .id = SERIO_ANY, 716 .extra = SERIO_ANY, 717 }, 718 { 0 } 719}; 720 721MODULE_DEVICE_TABLE(serio, lkkbd_serio_ids); 722 723static struct serio_driver lkkbd_drv = { 724 .driver = { 725 .name = "lkkbd", 726 }, 727 .description = DRIVER_DESC, 728 .id_table = lkkbd_serio_ids, 729 .connect = lkkbd_connect, 730 .disconnect = lkkbd_disconnect, 731 .interrupt = lkkbd_interrupt, 732}; 733 734/* 735 * The functions for insering/removing us as a module. 736 */ 737static int __init lkkbd_init(void) 738{ 739 return serio_register_driver(&lkkbd_drv); 740} 741 742static void __exit lkkbd_exit(void) 743{ 744 serio_unregister_driver(&lkkbd_drv); 745} 746 747module_init(lkkbd_init); 748module_exit(lkkbd_exit); 749