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