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/moduleparam.h> 68#include <linux/interrupt.h> 69#include <linux/init.h> 70#include <linux/input.h> 71#include <linux/serio.h> 72#include <linux/workqueue.h> 73 74#define DRIVER_DESC "LK keyboard driver" 75 76MODULE_AUTHOR ("Jan-Benedict Glaw <jbglaw@lug-owl.de>"); 77MODULE_DESCRIPTION (DRIVER_DESC); 78MODULE_LICENSE ("GPL"); 79 80/* 81 * Known parameters: 82 * bell_volume 83 * keyclick_volume 84 * ctrlclick_volume 85 * 86 * Please notice that there's not yet an API to set these at runtime. 87 */ 88static int bell_volume = 100; /* % */ 89module_param (bell_volume, int, 0); 90MODULE_PARM_DESC (bell_volume, "Bell volume (in %). default is 100%"); 91 92static int keyclick_volume = 100; /* % */ 93module_param (keyclick_volume, int, 0); 94MODULE_PARM_DESC (keyclick_volume, "Keyclick volume (in %), default is 100%"); 95 96static int ctrlclick_volume = 100; /* % */ 97module_param (ctrlclick_volume, int, 0); 98MODULE_PARM_DESC (ctrlclick_volume, "Ctrlclick volume (in %), default is 100%"); 99 100static int lk201_compose_is_alt; 101module_param (lk201_compose_is_alt, int, 0); 102MODULE_PARM_DESC (lk201_compose_is_alt, "If set non-zero, LK201' Compose key " 103 "will act as an Alt key"); 104 105 106 107#undef LKKBD_DEBUG 108#ifdef LKKBD_DEBUG 109#define DBG(x...) printk (x) 110#else 111#define DBG(x...) do {} while (0) 112#endif 113 114/* LED control */ 115#define LK_LED_WAIT 0x81 116#define LK_LED_COMPOSE 0x82 117#define LK_LED_SHIFTLOCK 0x84 118#define LK_LED_SCROLLLOCK 0x88 119#define LK_CMD_LED_ON 0x13 120#define LK_CMD_LED_OFF 0x11 121 122/* Mode control */ 123#define LK_MODE_DOWN 0x80 124#define LK_MODE_AUTODOWN 0x82 125#define LK_MODE_UPDOWN 0x86 126#define LK_CMD_SET_MODE(mode,div) ((mode) | ((div) << 3)) 127 128/* Misc commands */ 129#define LK_CMD_ENABLE_KEYCLICK 0x1b 130#define LK_CMD_DISABLE_KEYCLICK 0x99 131#define LK_CMD_DISABLE_BELL 0xa1 132#define LK_CMD_SOUND_BELL 0xa7 133#define LK_CMD_ENABLE_BELL 0x23 134#define LK_CMD_DISABLE_CTRCLICK 0xb9 135#define LK_CMD_ENABLE_CTRCLICK 0xbb 136#define LK_CMD_SET_DEFAULTS 0xd3 137#define LK_CMD_POWERCYCLE_RESET 0xfd 138#define LK_CMD_ENABLE_LK401 0xe9 139#define LK_CMD_REQUEST_ID 0xab 140 141/* Misc responses from keyboard */ 142#define LK_STUCK_KEY 0x3d 143#define LK_SELFTEST_FAILED 0x3e 144#define LK_ALL_KEYS_UP 0xb3 145#define LK_METRONOME 0xb4 146#define LK_OUTPUT_ERROR 0xb5 147#define LK_INPUT_ERROR 0xb6 148#define LK_KBD_LOCKED 0xb7 149#define LK_KBD_TEST_MODE_ACK 0xb8 150#define LK_PREFIX_KEY_DOWN 0xb9 151#define LK_MODE_CHANGE_ACK 0xba 152#define LK_RESPONSE_RESERVED 0xbb 153 154#define LK_NUM_KEYCODES 256 155#define LK_NUM_IGNORE_BYTES 6 156typedef u_int16_t lk_keycode_t; 157 158 159 160static lk_keycode_t lkkbd_keycode[LK_NUM_KEYCODES] = { 161 [0x56] = KEY_F1, 162 [0x57] = KEY_F2, 163 [0x58] = KEY_F3, 164 [0x59] = KEY_F4, 165 [0x5a] = KEY_F5, 166 [0x64] = KEY_F6, 167 [0x65] = KEY_F7, 168 [0x66] = KEY_F8, 169 [0x67] = KEY_F9, 170 [0x68] = KEY_F10, 171 [0x71] = KEY_F11, 172 [0x72] = KEY_F12, 173 [0x73] = KEY_F13, 174 [0x74] = KEY_F14, 175 [0x7c] = KEY_F15, 176 [0x7d] = KEY_F16, 177 [0x80] = KEY_F17, 178 [0x81] = KEY_F18, 179 [0x82] = KEY_F19, 180 [0x83] = KEY_F20, 181 [0x8a] = KEY_FIND, 182 [0x8b] = KEY_INSERT, 183 [0x8c] = KEY_DELETE, 184 [0x8d] = KEY_SELECT, 185 [0x8e] = KEY_PAGEUP, 186 [0x8f] = KEY_PAGEDOWN, 187 [0x92] = KEY_KP0, 188 [0x94] = KEY_KPDOT, 189 [0x95] = KEY_KPENTER, 190 [0x96] = KEY_KP1, 191 [0x97] = KEY_KP2, 192 [0x98] = KEY_KP3, 193 [0x99] = KEY_KP4, 194 [0x9a] = KEY_KP5, 195 [0x9b] = KEY_KP6, 196 [0x9c] = KEY_KPCOMMA, 197 [0x9d] = KEY_KP7, 198 [0x9e] = KEY_KP8, 199 [0x9f] = KEY_KP9, 200 [0xa0] = KEY_KPMINUS, 201 [0xa1] = KEY_PROG1, 202 [0xa2] = KEY_PROG2, 203 [0xa3] = KEY_PROG3, 204 [0xa4] = KEY_PROG4, 205 [0xa7] = KEY_LEFT, 206 [0xa8] = KEY_RIGHT, 207 [0xa9] = KEY_DOWN, 208 [0xaa] = KEY_UP, 209 [0xab] = KEY_RIGHTSHIFT, 210 [0xac] = KEY_LEFTALT, 211 [0xad] = KEY_COMPOSE, /* Right Compose, that is. */ 212 [0xae] = KEY_LEFTSHIFT, /* Same as KEY_RIGHTSHIFT on LK201 */ 213 [0xaf] = KEY_LEFTCTRL, 214 [0xb0] = KEY_CAPSLOCK, 215 [0xb1] = KEY_COMPOSE, /* Left Compose, that is. */ 216 [0xb2] = KEY_RIGHTALT, 217 [0xbc] = KEY_BACKSPACE, 218 [0xbd] = KEY_ENTER, 219 [0xbe] = KEY_TAB, 220 [0xbf] = KEY_ESC, 221 [0xc0] = KEY_1, 222 [0xc1] = KEY_Q, 223 [0xc2] = KEY_A, 224 [0xc3] = KEY_Z, 225 [0xc5] = KEY_2, 226 [0xc6] = KEY_W, 227 [0xc7] = KEY_S, 228 [0xc8] = KEY_X, 229 [0xc9] = KEY_102ND, 230 [0xcb] = KEY_3, 231 [0xcc] = KEY_E, 232 [0xcd] = KEY_D, 233 [0xce] = KEY_C, 234 [0xd0] = KEY_4, 235 [0xd1] = KEY_R, 236 [0xd2] = KEY_F, 237 [0xd3] = KEY_V, 238 [0xd4] = KEY_SPACE, 239 [0xd6] = KEY_5, 240 [0xd7] = KEY_T, 241 [0xd8] = KEY_G, 242 [0xd9] = KEY_B, 243 [0xdb] = KEY_6, 244 [0xdc] = KEY_Y, 245 [0xdd] = KEY_H, 246 [0xde] = KEY_N, 247 [0xe0] = KEY_7, 248 [0xe1] = KEY_U, 249 [0xe2] = KEY_J, 250 [0xe3] = KEY_M, 251 [0xe5] = KEY_8, 252 [0xe6] = KEY_I, 253 [0xe7] = KEY_K, 254 [0xe8] = KEY_COMMA, 255 [0xea] = KEY_9, 256 [0xeb] = KEY_O, 257 [0xec] = KEY_L, 258 [0xed] = KEY_DOT, 259 [0xef] = KEY_0, 260 [0xf0] = KEY_P, 261 [0xf2] = KEY_SEMICOLON, 262 [0xf3] = KEY_SLASH, 263 [0xf5] = KEY_EQUAL, 264 [0xf6] = KEY_RIGHTBRACE, 265 [0xf7] = KEY_BACKSLASH, 266 [0xf9] = KEY_MINUS, 267 [0xfa] = KEY_LEFTBRACE, 268 [0xfb] = KEY_APOSTROPHE, 269}; 270 271#define CHECK_LED(LK, VAR_ON, VAR_OFF, LED, BITS) do { \ 272 if (test_bit (LED, (LK)->dev->led)) \ 273 VAR_ON |= BITS; \ 274 else \ 275 VAR_OFF |= BITS; \ 276 } while (0) 277 278/* 279 * Per-keyboard data 280 */ 281struct lkkbd { 282 lk_keycode_t keycode[LK_NUM_KEYCODES]; 283 int ignore_bytes; 284 unsigned char id[LK_NUM_IGNORE_BYTES]; 285 struct input_dev *dev; 286 struct serio *serio; 287 struct work_struct tq; 288 char name[64]; 289 char phys[32]; 290 char type; 291 int bell_volume; 292 int keyclick_volume; 293 int ctrlclick_volume; 294}; 295 296#ifdef LKKBD_DEBUG 297/* 298 * Responses from the keyboard and mapping back to their names. 299 */ 300static struct { 301 unsigned char value; 302 unsigned char *name; 303} lk_response[] = { 304#define RESPONSE(x) { .value = (x), .name = #x, } 305 RESPONSE (LK_STUCK_KEY), 306 RESPONSE (LK_SELFTEST_FAILED), 307 RESPONSE (LK_ALL_KEYS_UP), 308 RESPONSE (LK_METRONOME), 309 RESPONSE (LK_OUTPUT_ERROR), 310 RESPONSE (LK_INPUT_ERROR), 311 RESPONSE (LK_KBD_LOCKED), 312 RESPONSE (LK_KBD_TEST_MODE_ACK), 313 RESPONSE (LK_PREFIX_KEY_DOWN), 314 RESPONSE (LK_MODE_CHANGE_ACK), 315 RESPONSE (LK_RESPONSE_RESERVED), 316#undef RESPONSE 317}; 318 319static unsigned char * 320response_name (unsigned char value) 321{ 322 int i; 323 324 for (i = 0; i < ARRAY_SIZE (lk_response); i++) 325 if (lk_response[i].value == value) 326 return lk_response[i].name; 327 328 return "<unknown>"; 329} 330#endif /* LKKBD_DEBUG */ 331 332/* 333 * Calculate volume parameter byte for a given volume. 334 */ 335static unsigned char 336volume_to_hw (int volume_percent) 337{ 338 unsigned char ret = 0; 339 340 if (volume_percent < 0) 341 volume_percent = 0; 342 if (volume_percent > 100) 343 volume_percent = 100; 344 345 if (volume_percent >= 0) 346 ret = 7; 347 if (volume_percent >= 13) /* 12.5 */ 348 ret = 6; 349 if (volume_percent >= 25) 350 ret = 5; 351 if (volume_percent >= 38) /* 37.5 */ 352 ret = 4; 353 if (volume_percent >= 50) 354 ret = 3; 355 if (volume_percent >= 63) /* 62.5 */ 356 ret = 2; /* This is the default volume */ 357 if (volume_percent >= 75) 358 ret = 1; 359 if (volume_percent >= 88) /* 87.5 */ 360 ret = 0; 361 362 ret |= 0x80; 363 364 return ret; 365} 366 367static void 368lkkbd_detection_done (struct lkkbd *lk) 369{ 370 int i; 371 372 /* 373 * Reset setting for Compose key. Let Compose be KEY_COMPOSE. 374 */ 375 lk->keycode[0xb1] = KEY_COMPOSE; 376 377 /* 378 * Print keyboard name and modify Compose=Alt on user's request. 379 */ 380 switch (lk->id[4]) { 381 case 1: 382 strlcpy (lk->name, "DEC LK201 keyboard", 383 sizeof (lk->name)); 384 385 if (lk201_compose_is_alt) 386 lk->keycode[0xb1] = KEY_LEFTALT; 387 break; 388 389 case 2: 390 strlcpy (lk->name, "DEC LK401 keyboard", 391 sizeof (lk->name)); 392 break; 393 394 default: 395 strlcpy (lk->name, "Unknown DEC keyboard", 396 sizeof (lk->name)); 397 printk (KERN_ERR "lkkbd: keyboard on %s is unknown, " 398 "please report to Jan-Benedict Glaw " 399 "<jbglaw@lug-owl.de>\n", lk->phys); 400 printk (KERN_ERR "lkkbd: keyboard ID'ed as:"); 401 for (i = 0; i < LK_NUM_IGNORE_BYTES; i++) 402 printk (" 0x%02x", lk->id[i]); 403 printk ("\n"); 404 break; 405 } 406 printk (KERN_INFO "lkkbd: keyboard on %s identified as: %s\n", 407 lk->phys, lk->name); 408 409 /* 410 * Report errors during keyboard boot-up. 411 */ 412 switch (lk->id[2]) { 413 case 0x00: 414 /* All okay */ 415 break; 416 417 case LK_STUCK_KEY: 418 printk (KERN_ERR "lkkbd: Stuck key on keyboard at " 419 "%s\n", lk->phys); 420 break; 421 422 case LK_SELFTEST_FAILED: 423 printk (KERN_ERR "lkkbd: Selftest failed on keyboard " 424 "at %s, keyboard may not work " 425 "properly\n", lk->phys); 426 break; 427 428 default: 429 printk (KERN_ERR "lkkbd: Unknown error %02x on " 430 "keyboard at %s\n", lk->id[2], 431 lk->phys); 432 break; 433 } 434 435 /* 436 * Try to hint user if there's a stuck key. 437 */ 438 if (lk->id[2] == LK_STUCK_KEY && lk->id[3] != 0) 439 printk (KERN_ERR "Scancode of stuck key is 0x%02x, keycode " 440 "is 0x%04x\n", lk->id[3], 441 lk->keycode[lk->id[3]]); 442 443 return; 444} 445 446/* 447 * lkkbd_interrupt() is called by the low level driver when a character 448 * is received. 449 */ 450static irqreturn_t 451lkkbd_interrupt (struct serio *serio, unsigned char data, unsigned int flags) 452{ 453 struct lkkbd *lk = serio_get_drvdata (serio); 454 int i; 455 456 DBG (KERN_INFO "Got byte 0x%02x\n", data); 457 458 if (lk->ignore_bytes > 0) { 459 DBG (KERN_INFO "Ignoring a byte on %s\n", lk->name); 460 lk->id[LK_NUM_IGNORE_BYTES - lk->ignore_bytes--] = data; 461 462 if (lk->ignore_bytes == 0) 463 lkkbd_detection_done (lk); 464 465 return IRQ_HANDLED; 466 } 467 468 switch (data) { 469 case LK_ALL_KEYS_UP: 470 for (i = 0; i < ARRAY_SIZE (lkkbd_keycode); i++) 471 if (lk->keycode[i] != KEY_RESERVED) 472 input_report_key (lk->dev, lk->keycode[i], 0); 473 input_sync (lk->dev); 474 break; 475 476 case 0x01: 477 DBG (KERN_INFO "Got 0x01, scheduling re-initialization\n"); 478 lk->ignore_bytes = LK_NUM_IGNORE_BYTES; 479 lk->id[LK_NUM_IGNORE_BYTES - lk->ignore_bytes--] = data; 480 schedule_work (&lk->tq); 481 break; 482 483 case LK_METRONOME: 484 case LK_OUTPUT_ERROR: 485 case LK_INPUT_ERROR: 486 case LK_KBD_LOCKED: 487 case LK_KBD_TEST_MODE_ACK: 488 case LK_PREFIX_KEY_DOWN: 489 case LK_MODE_CHANGE_ACK: 490 case LK_RESPONSE_RESERVED: 491 DBG (KERN_INFO "Got %s and don't know how to handle...\n", 492 response_name (data)); 493 break; 494 495 default: 496 if (lk->keycode[data] != KEY_RESERVED) { 497 if (!test_bit (lk->keycode[data], lk->dev->key)) 498 input_report_key (lk->dev, lk->keycode[data], 1); 499 else 500 input_report_key (lk->dev, lk->keycode[data], 0); 501 input_sync (lk->dev); 502 } else 503 printk (KERN_WARNING "%s: Unknown key with " 504 "scancode 0x%02x on %s.\n", 505 __FILE__, data, lk->name); 506 } 507 508 return IRQ_HANDLED; 509} 510 511/* 512 * lkkbd_event() handles events from the input module. 513 */ 514static int 515lkkbd_event (struct input_dev *dev, unsigned int type, unsigned int code, 516 int value) 517{ 518 struct lkkbd *lk = input_get_drvdata (dev); 519 unsigned char leds_on = 0; 520 unsigned char leds_off = 0; 521 522 switch (type) { 523 case EV_LED: 524 CHECK_LED (lk, leds_on, leds_off, LED_CAPSL, LK_LED_SHIFTLOCK); 525 CHECK_LED (lk, leds_on, leds_off, LED_COMPOSE, LK_LED_COMPOSE); 526 CHECK_LED (lk, leds_on, leds_off, LED_SCROLLL, LK_LED_SCROLLLOCK); 527 CHECK_LED (lk, leds_on, leds_off, LED_SLEEP, LK_LED_WAIT); 528 if (leds_on != 0) { 529 lk->serio->write (lk->serio, LK_CMD_LED_ON); 530 lk->serio->write (lk->serio, leds_on); 531 } 532 if (leds_off != 0) { 533 lk->serio->write (lk->serio, LK_CMD_LED_OFF); 534 lk->serio->write (lk->serio, leds_off); 535 } 536 return 0; 537 538 case EV_SND: 539 switch (code) { 540 case SND_CLICK: 541 if (value == 0) { 542 DBG ("%s: Deactivating key clicks\n", __FUNCTION__); 543 lk->serio->write (lk->serio, LK_CMD_DISABLE_KEYCLICK); 544 lk->serio->write (lk->serio, LK_CMD_DISABLE_CTRCLICK); 545 } else { 546 DBG ("%s: Activating key clicks\n", __FUNCTION__); 547 lk->serio->write (lk->serio, LK_CMD_ENABLE_KEYCLICK); 548 lk->serio->write (lk->serio, volume_to_hw (lk->keyclick_volume)); 549 lk->serio->write (lk->serio, LK_CMD_ENABLE_CTRCLICK); 550 lk->serio->write (lk->serio, volume_to_hw (lk->ctrlclick_volume)); 551 } 552 return 0; 553 554 case SND_BELL: 555 if (value != 0) 556 lk->serio->write (lk->serio, LK_CMD_SOUND_BELL); 557 558 return 0; 559 } 560 break; 561 562 default: 563 printk (KERN_ERR "%s (): Got unknown type %d, code %d, value %d\n", 564 __FUNCTION__, type, code, value); 565 } 566 567 return -1; 568} 569 570/* 571 * lkkbd_reinit() sets leds and beeps to a state the computer remembers they 572 * were in. 573 */ 574static void 575lkkbd_reinit (struct work_struct *work) 576{ 577 struct lkkbd *lk = container_of(work, struct lkkbd, tq); 578 int division; 579 unsigned char leds_on = 0; 580 unsigned char leds_off = 0; 581 582 /* Ask for ID */ 583 lk->serio->write (lk->serio, LK_CMD_REQUEST_ID); 584 585 /* Reset parameters */ 586 lk->serio->write (lk->serio, LK_CMD_SET_DEFAULTS); 587 588 /* Set LEDs */ 589 CHECK_LED (lk, leds_on, leds_off, LED_CAPSL, LK_LED_SHIFTLOCK); 590 CHECK_LED (lk, leds_on, leds_off, LED_COMPOSE, LK_LED_COMPOSE); 591 CHECK_LED (lk, leds_on, leds_off, LED_SCROLLL, LK_LED_SCROLLLOCK); 592 CHECK_LED (lk, leds_on, leds_off, LED_SLEEP, LK_LED_WAIT); 593 if (leds_on != 0) { 594 lk->serio->write (lk->serio, LK_CMD_LED_ON); 595 lk->serio->write (lk->serio, leds_on); 596 } 597 if (leds_off != 0) { 598 lk->serio->write (lk->serio, LK_CMD_LED_OFF); 599 lk->serio->write (lk->serio, leds_off); 600 } 601 602 /* 603 * Try to activate extended LK401 mode. This command will 604 * only work with a LK401 keyboard and grants access to 605 * LAlt, RAlt, RCompose and RShift. 606 */ 607 lk->serio->write (lk->serio, LK_CMD_ENABLE_LK401); 608 609 /* Set all keys to UPDOWN mode */ 610 for (division = 1; division <= 14; division++) 611 lk->serio->write (lk->serio, LK_CMD_SET_MODE (LK_MODE_UPDOWN, 612 division)); 613 614 /* Enable bell and set volume */ 615 lk->serio->write (lk->serio, LK_CMD_ENABLE_BELL); 616 lk->serio->write (lk->serio, volume_to_hw (lk->bell_volume)); 617 618 /* Enable/disable keyclick (and possibly set volume) */ 619 if (test_bit (SND_CLICK, lk->dev->snd)) { 620 lk->serio->write (lk->serio, LK_CMD_ENABLE_KEYCLICK); 621 lk->serio->write (lk->serio, volume_to_hw (lk->keyclick_volume)); 622 lk->serio->write (lk->serio, LK_CMD_ENABLE_CTRCLICK); 623 lk->serio->write (lk->serio, volume_to_hw (lk->ctrlclick_volume)); 624 } else { 625 lk->serio->write (lk->serio, LK_CMD_DISABLE_KEYCLICK); 626 lk->serio->write (lk->serio, LK_CMD_DISABLE_CTRCLICK); 627 } 628 629 /* Sound the bell if needed */ 630 if (test_bit (SND_BELL, lk->dev->snd)) 631 lk->serio->write (lk->serio, LK_CMD_SOUND_BELL); 632} 633 634/* 635 * lkkbd_connect() probes for a LK keyboard and fills the necessary structures. 636 */ 637static int 638lkkbd_connect (struct serio *serio, struct serio_driver *drv) 639{ 640 struct lkkbd *lk; 641 struct input_dev *input_dev; 642 int i; 643 int err; 644 645 lk = kzalloc (sizeof (struct lkkbd), GFP_KERNEL); 646 input_dev = input_allocate_device (); 647 if (!lk || !input_dev) { 648 err = -ENOMEM; 649 goto fail1; 650 } 651 652 lk->serio = serio; 653 lk->dev = input_dev; 654 INIT_WORK (&lk->tq, lkkbd_reinit); 655 lk->bell_volume = bell_volume; 656 lk->keyclick_volume = keyclick_volume; 657 lk->ctrlclick_volume = ctrlclick_volume; 658 memcpy (lk->keycode, lkkbd_keycode, sizeof (lk_keycode_t) * LK_NUM_KEYCODES); 659 660 strlcpy (lk->name, "DEC LK keyboard", sizeof(lk->name)); 661 snprintf (lk->phys, sizeof(lk->phys), "%s/input0", serio->phys); 662 663 input_dev->name = lk->name; 664 input_dev->phys = lk->phys; 665 input_dev->id.bustype = BUS_RS232; 666 input_dev->id.vendor = SERIO_LKKBD; 667 input_dev->id.product = 0; 668 input_dev->id.version = 0x0100; 669 input_dev->dev.parent = &serio->dev; 670 input_dev->event = lkkbd_event; 671 672 input_set_drvdata (input_dev, lk); 673 674 set_bit (EV_KEY, input_dev->evbit); 675 set_bit (EV_LED, input_dev->evbit); 676 set_bit (EV_SND, input_dev->evbit); 677 set_bit (EV_REP, input_dev->evbit); 678 set_bit (LED_CAPSL, input_dev->ledbit); 679 set_bit (LED_SLEEP, input_dev->ledbit); 680 set_bit (LED_COMPOSE, input_dev->ledbit); 681 set_bit (LED_SCROLLL, input_dev->ledbit); 682 set_bit (SND_BELL, input_dev->sndbit); 683 set_bit (SND_CLICK, input_dev->sndbit); 684 685 input_dev->keycode = lk->keycode; 686 input_dev->keycodesize = sizeof (lk_keycode_t); 687 input_dev->keycodemax = LK_NUM_KEYCODES; 688 for (i = 0; i < LK_NUM_KEYCODES; i++) 689 set_bit (lk->keycode[i], input_dev->keybit); 690 691 serio_set_drvdata (serio, lk); 692 693 err = serio_open (serio, drv); 694 if (err) 695 goto fail2; 696 697 err = input_register_device (lk->dev); 698 if (err) 699 goto fail3; 700 701 lk->serio->write (lk->serio, LK_CMD_POWERCYCLE_RESET); 702 703 return 0; 704 705 fail3: serio_close (serio); 706 fail2: serio_set_drvdata (serio, NULL); 707 fail1: input_free_device (input_dev); 708 kfree (lk); 709 return err; 710} 711 712/* 713 * lkkbd_disconnect() unregisters and closes behind us. 714 */ 715static void 716lkkbd_disconnect (struct serio *serio) 717{ 718 struct lkkbd *lk = serio_get_drvdata (serio); 719 720 input_get_device (lk->dev); 721 input_unregister_device (lk->dev); 722 serio_close (serio); 723 serio_set_drvdata (serio, NULL); 724 input_put_device (lk->dev); 725 kfree (lk); 726} 727 728static struct serio_device_id lkkbd_serio_ids[] = { 729 { 730 .type = SERIO_RS232, 731 .proto = SERIO_LKKBD, 732 .id = SERIO_ANY, 733 .extra = SERIO_ANY, 734 }, 735 { 0 } 736}; 737 738MODULE_DEVICE_TABLE(serio, lkkbd_serio_ids); 739 740static struct serio_driver lkkbd_drv = { 741 .driver = { 742 .name = "lkkbd", 743 }, 744 .description = DRIVER_DESC, 745 .id_table = lkkbd_serio_ids, 746 .connect = lkkbd_connect, 747 .disconnect = lkkbd_disconnect, 748 .interrupt = lkkbd_interrupt, 749}; 750 751/* 752 * The functions for insering/removing us as a module. 753 */ 754static int __init 755lkkbd_init (void) 756{ 757 return serio_register_driver(&lkkbd_drv); 758} 759 760static void __exit 761lkkbd_exit (void) 762{ 763 serio_unregister_driver(&lkkbd_drv); 764} 765 766module_init (lkkbd_init); 767module_exit (lkkbd_exit); 768