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 * Should you need to contact me, the author, you can do so either by 64 * email or by paper mail: 65 * Jan-Benedict Glaw, Lilienstra�e 16, 33790 H�rste (near Halle/Westf.), 66 * Germany. 67 */ 68 69 #include <linux/delay.h> 70 #include <linux/slab.h> 71 #include <linux/module.h> 72 #include <linux/moduleparam.h> 73 #include <linux/interrupt.h> 74 #include <linux/init.h> 75 #include <linux/input.h> 76 #include <linux/serio.h> 77 #include <linux/workqueue.h> 78 79 #define DRIVER_DESC "LK keyboard driver" 80 81 MODULE_AUTHOR ("Jan-Benedict Glaw <jbglaw@lug-owl.de>"); 82 MODULE_DESCRIPTION (DRIVER_DESC); 83 MODULE_LICENSE ("GPL"); 84 85 /* 86 * Known parameters: 87 * bell_volume 88 * keyclick_volume 89 * ctrlclick_volume 90 * 91 * Please notice that there's not yet an API to set these at runtime. 92 */ 93 static int bell_volume = 100; /* % */ 94 module_param (bell_volume, int, 0); 95 MODULE_PARM_DESC (bell_volume, "Bell volume (in %). default is 100%"); 96 97 static int keyclick_volume = 100; /* % */ 98 module_param (keyclick_volume, int, 0); 99 MODULE_PARM_DESC (keyclick_volume, "Keyclick volume (in %), default is 100%"); 100 101 static int ctrlclick_volume = 100; /* % */ 102 module_param (ctrlclick_volume, int, 0); 103 MODULE_PARM_DESC (ctrlclick_volume, "Ctrlclick volume (in %), default is 100%"); 104 105 static int lk201_compose_is_alt; 106 module_param (lk201_compose_is_alt, int, 0); 107 MODULE_PARM_DESC (lk201_compose_is_alt, "If set non-zero, LK201' Compose key " 108 "will act as an Alt key"); 109 110 111 112 #undef LKKBD_DEBUG 113 #ifdef LKKBD_DEBUG 114 #define DBG(x...) printk (x) 115 #else 116 #define DBG(x...) do {} while (0) 117 #endif 118 119 /* LED control */ 120 #define LK_LED_WAIT 0x81 121 #define LK_LED_COMPOSE 0x82 122 #define LK_LED_SHIFTLOCK 0x84 123 #define LK_LED_SCROLLLOCK 0x88 124 #define LK_CMD_LED_ON 0x13 125 #define LK_CMD_LED_OFF 0x11 126 127 /* Mode control */ 128 #define LK_MODE_DOWN 0x80 129 #define LK_MODE_AUTODOWN 0x82 130 #define LK_MODE_UPDOWN 0x86 131 #define LK_CMD_SET_MODE(mode,div) ((mode) | ((div) << 3)) 132 133 /* Misc commands */ 134 #define LK_CMD_ENABLE_KEYCLICK 0x1b 135 #define LK_CMD_DISABLE_KEYCLICK 0x99 136 #define LK_CMD_DISABLE_BELL 0xa1 137 #define LK_CMD_SOUND_BELL 0xa7 138 #define LK_CMD_ENABLE_BELL 0x23 139 #define LK_CMD_DISABLE_CTRCLICK 0xb9 140 #define LK_CMD_ENABLE_CTRCLICK 0xbb 141 #define LK_CMD_SET_DEFAULTS 0xd3 142 #define LK_CMD_POWERCYCLE_RESET 0xfd 143 #define LK_CMD_ENABLE_LK401 0xe9 144 #define LK_CMD_REQUEST_ID 0xab 145 146 /* Misc responses from keyboard */ 147 #define LK_STUCK_KEY 0x3d 148 #define LK_SELFTEST_FAILED 0x3e 149 #define LK_ALL_KEYS_UP 0xb3 150 #define LK_METRONOME 0xb4 151 #define LK_OUTPUT_ERROR 0xb5 152 #define LK_INPUT_ERROR 0xb6 153 #define LK_KBD_LOCKED 0xb7 154 #define LK_KBD_TEST_MODE_ACK 0xb8 155 #define LK_PREFIX_KEY_DOWN 0xb9 156 #define LK_MODE_CHANGE_ACK 0xba 157 #define LK_RESPONSE_RESERVED 0xbb 158 159 #define LK_NUM_KEYCODES 256 160 #define LK_NUM_IGNORE_BYTES 6 161 typedef u_int16_t lk_keycode_t; 162 163 164 165 static lk_keycode_t lkkbd_keycode[LK_NUM_KEYCODES] = { 166 [0x56] = KEY_F1, 167 [0x57] = KEY_F2, 168 [0x58] = KEY_F3, 169 [0x59] = KEY_F4, 170 [0x5a] = KEY_F5, 171 [0x64] = KEY_F6, 172 [0x65] = KEY_F7, 173 [0x66] = KEY_F8, 174 [0x67] = KEY_F9, 175 [0x68] = KEY_F10, 176 [0x71] = KEY_F11, 177 [0x72] = KEY_F12, 178 [0x73] = KEY_F13, 179 [0x74] = KEY_F14, 180 [0x7c] = KEY_F15, 181 [0x7d] = KEY_F16, 182 [0x80] = KEY_F17, 183 [0x81] = KEY_F18, 184 [0x82] = KEY_F19, 185 [0x83] = KEY_F20, 186 [0x8a] = KEY_FIND, 187 [0x8b] = KEY_INSERT, 188 [0x8c] = KEY_DELETE, 189 [0x8d] = KEY_SELECT, 190 [0x8e] = KEY_PAGEUP, 191 [0x8f] = KEY_PAGEDOWN, 192 [0x92] = KEY_KP0, 193 [0x94] = KEY_KPDOT, 194 [0x95] = KEY_KPENTER, 195 [0x96] = KEY_KP1, 196 [0x97] = KEY_KP2, 197 [0x98] = KEY_KP3, 198 [0x99] = KEY_KP4, 199 [0x9a] = KEY_KP5, 200 [0x9b] = KEY_KP6, 201 [0x9c] = KEY_KPCOMMA, 202 [0x9d] = KEY_KP7, 203 [0x9e] = KEY_KP8, 204 [0x9f] = KEY_KP9, 205 [0xa0] = KEY_KPMINUS, 206 [0xa1] = KEY_PROG1, 207 [0xa2] = KEY_PROG2, 208 [0xa3] = KEY_PROG3, 209 [0xa4] = KEY_PROG4, 210 [0xa7] = KEY_LEFT, 211 [0xa8] = KEY_RIGHT, 212 [0xa9] = KEY_DOWN, 213 [0xaa] = KEY_UP, 214 [0xab] = KEY_RIGHTSHIFT, 215 [0xac] = KEY_LEFTALT, 216 [0xad] = KEY_COMPOSE, /* Right Compose, that is. */ 217 [0xae] = KEY_LEFTSHIFT, /* Same as KEY_RIGHTSHIFT on LK201 */ 218 [0xaf] = KEY_LEFTCTRL, 219 [0xb0] = KEY_CAPSLOCK, 220 [0xb1] = KEY_COMPOSE, /* Left Compose, that is. */ 221 [0xb2] = KEY_RIGHTALT, 222 [0xbc] = KEY_BACKSPACE, 223 [0xbd] = KEY_ENTER, 224 [0xbe] = KEY_TAB, 225 [0xbf] = KEY_ESC, 226 [0xc0] = KEY_1, 227 [0xc1] = KEY_Q, 228 [0xc2] = KEY_A, 229 [0xc3] = KEY_Z, 230 [0xc5] = KEY_2, 231 [0xc6] = KEY_W, 232 [0xc7] = KEY_S, 233 [0xc8] = KEY_X, 234 [0xc9] = KEY_102ND, 235 [0xcb] = KEY_3, 236 [0xcc] = KEY_E, 237 [0xcd] = KEY_D, 238 [0xce] = KEY_C, 239 [0xd0] = KEY_4, 240 [0xd1] = KEY_R, 241 [0xd2] = KEY_F, 242 [0xd3] = KEY_V, 243 [0xd4] = KEY_SPACE, 244 [0xd6] = KEY_5, 245 [0xd7] = KEY_T, 246 [0xd8] = KEY_G, 247 [0xd9] = KEY_B, 248 [0xdb] = KEY_6, 249 [0xdc] = KEY_Y, 250 [0xdd] = KEY_H, 251 [0xde] = KEY_N, 252 [0xe0] = KEY_7, 253 [0xe1] = KEY_U, 254 [0xe2] = KEY_J, 255 [0xe3] = KEY_M, 256 [0xe5] = KEY_8, 257 [0xe6] = KEY_I, 258 [0xe7] = KEY_K, 259 [0xe8] = KEY_COMMA, 260 [0xea] = KEY_9, 261 [0xeb] = KEY_O, 262 [0xec] = KEY_L, 263 [0xed] = KEY_DOT, 264 [0xef] = KEY_0, 265 [0xf0] = KEY_P, 266 [0xf2] = KEY_SEMICOLON, 267 [0xf3] = KEY_SLASH, 268 [0xf5] = KEY_EQUAL, 269 [0xf6] = KEY_RIGHTBRACE, 270 [0xf7] = KEY_BACKSLASH, 271 [0xf9] = KEY_MINUS, 272 [0xfa] = KEY_LEFTBRACE, 273 [0xfb] = KEY_APOSTROPHE, 274 }; 275 276 #define CHECK_LED(LK, VAR_ON, VAR_OFF, LED, BITS) do { \ 277 if (test_bit (LED, (LK)->dev->led)) \ 278 VAR_ON |= BITS; \ 279 else \ 280 VAR_OFF |= BITS; \ 281 } while (0) 282 283 /* 284 * Per-keyboard data 285 */ 286 struct lkkbd { 287 lk_keycode_t keycode[LK_NUM_KEYCODES]; 288 int ignore_bytes; 289 unsigned char id[LK_NUM_IGNORE_BYTES]; 290 struct input_dev *dev; 291 struct serio *serio; 292 struct work_struct tq; 293 char name[64]; 294 char phys[32]; 295 char type; 296 int bell_volume; 297 int keyclick_volume; 298 int ctrlclick_volume; 299 }; 300 301 #ifdef LKKBD_DEBUG 302 /* 303 * Responses from the keyboard and mapping back to their names. 304 */ 305 static struct { 306 unsigned char value; 307 unsigned char *name; 308 } lk_response[] = { 309 #define RESPONSE(x) { .value = (x), .name = #x, } 310 RESPONSE (LK_STUCK_KEY), 311 RESPONSE (LK_SELFTEST_FAILED), 312 RESPONSE (LK_ALL_KEYS_UP), 313 RESPONSE (LK_METRONOME), 314 RESPONSE (LK_OUTPUT_ERROR), 315 RESPONSE (LK_INPUT_ERROR), 316 RESPONSE (LK_KBD_LOCKED), 317 RESPONSE (LK_KBD_TEST_MODE_ACK), 318 RESPONSE (LK_PREFIX_KEY_DOWN), 319 RESPONSE (LK_MODE_CHANGE_ACK), 320 RESPONSE (LK_RESPONSE_RESERVED), 321 #undef RESPONSE 322 }; 323 324 static unsigned char * 325 response_name (unsigned char value) 326 { 327 int i; 328 329 for (i = 0; i < ARRAY_SIZE (lk_response); i++) 330 if (lk_response[i].value == value) 331 return lk_response[i].name; 332 333 return "<unknown>"; 334 } 335 #endif /* LKKBD_DEBUG */ 336 337 /* 338 * Calculate volume parameter byte for a given volume. 339 */ 340 static unsigned char 341 volume_to_hw (int volume_percent) 342 { 343 unsigned char ret = 0; 344 345 if (volume_percent < 0) 346 volume_percent = 0; 347 if (volume_percent > 100) 348 volume_percent = 100; 349 350 if (volume_percent >= 0) 351 ret = 7; 352 if (volume_percent >= 13) /* 12.5 */ 353 ret = 6; 354 if (volume_percent >= 25) 355 ret = 5; 356 if (volume_percent >= 38) /* 37.5 */ 357 ret = 4; 358 if (volume_percent >= 50) 359 ret = 3; 360 if (volume_percent >= 63) /* 62.5 */ 361 ret = 2; /* This is the default volume */ 362 if (volume_percent >= 75) 363 ret = 1; 364 if (volume_percent >= 88) /* 87.5 */ 365 ret = 0; 366 367 ret |= 0x80; 368 369 return ret; 370 } 371 372 static void 373 lkkbd_detection_done (struct lkkbd *lk) 374 { 375 int i; 376 377 /* 378 * Reset setting for Compose key. Let Compose be KEY_COMPOSE. 379 */ 380 lk->keycode[0xb1] = KEY_COMPOSE; 381 382 /* 383 * Print keyboard name and modify Compose=Alt on user's request. 384 */ 385 switch (lk->id[4]) { 386 case 1: 387 strlcpy (lk->name, "DEC LK201 keyboard", 388 sizeof (lk->name)); 389 390 if (lk201_compose_is_alt) 391 lk->keycode[0xb1] = KEY_LEFTALT; 392 break; 393 394 case 2: 395 strlcpy (lk->name, "DEC LK401 keyboard", 396 sizeof (lk->name)); 397 break; 398 399 default: 400 strlcpy (lk->name, "Unknown DEC keyboard", 401 sizeof (lk->name)); 402 printk (KERN_ERR "lkkbd: keyboard on %s is unknown, " 403 "please report to Jan-Benedict Glaw " 404 "<jbglaw@lug-owl.de>\n", lk->phys); 405 printk (KERN_ERR "lkkbd: keyboard ID'ed as:"); 406 for (i = 0; i < LK_NUM_IGNORE_BYTES; i++) 407 printk (" 0x%02x", lk->id[i]); 408 printk ("\n"); 409 break; 410 } 411 printk (KERN_INFO "lkkbd: keyboard on %s identified as: %s\n", 412 lk->phys, lk->name); 413 414 /* 415 * Report errors during keyboard boot-up. 416 */ 417 switch (lk->id[2]) { 418 case 0x00: 419 /* All okay */ 420 break; 421 422 case LK_STUCK_KEY: 423 printk (KERN_ERR "lkkbd: Stuck key on keyboard at " 424 "%s\n", lk->phys); 425 break; 426 427 case LK_SELFTEST_FAILED: 428 printk (KERN_ERR "lkkbd: Selftest failed on keyboard " 429 "at %s, keyboard may not work " 430 "properly\n", lk->phys); 431 break; 432 433 default: 434 printk (KERN_ERR "lkkbd: Unknown error %02x on " 435 "keyboard at %s\n", lk->id[2], 436 lk->phys); 437 break; 438 } 439 440 /* 441 * Try to hint user if there's a stuck key. 442 */ 443 if (lk->id[2] == LK_STUCK_KEY && lk->id[3] != 0) 444 printk (KERN_ERR "Scancode of stuck key is 0x%02x, keycode " 445 "is 0x%04x\n", lk->id[3], 446 lk->keycode[lk->id[3]]); 447 448 return; 449 } 450 451 /* 452 * lkkbd_interrupt() is called by the low level driver when a character 453 * is received. 454 */ 455 static irqreturn_t 456 lkkbd_interrupt (struct serio *serio, unsigned char data, unsigned int flags, 457 struct pt_regs *regs) 458 { 459 struct lkkbd *lk = serio_get_drvdata (serio); 460 int i; 461 462 DBG (KERN_INFO "Got byte 0x%02x\n", data); 463 464 if (lk->ignore_bytes > 0) { 465 DBG (KERN_INFO "Ignoring a byte on %s\n", lk->name); 466 lk->id[LK_NUM_IGNORE_BYTES - lk->ignore_bytes--] = data; 467 468 if (lk->ignore_bytes == 0) 469 lkkbd_detection_done (lk); 470 471 return IRQ_HANDLED; 472 } 473 474 switch (data) { 475 case LK_ALL_KEYS_UP: 476 input_regs (lk->dev, regs); 477 for (i = 0; i < ARRAY_SIZE (lkkbd_keycode); i++) 478 if (lk->keycode[i] != KEY_RESERVED) 479 input_report_key (lk->dev, lk->keycode[i], 0); 480 input_sync (lk->dev); 481 break; 482 483 case 0x01: 484 DBG (KERN_INFO "Got 0x01, scheduling re-initialization\n"); 485 lk->ignore_bytes = LK_NUM_IGNORE_BYTES; 486 lk->id[LK_NUM_IGNORE_BYTES - lk->ignore_bytes--] = data; 487 schedule_work (&lk->tq); 488 break; 489 490 case LK_METRONOME: 491 case LK_OUTPUT_ERROR: 492 case LK_INPUT_ERROR: 493 case LK_KBD_LOCKED: 494 case LK_KBD_TEST_MODE_ACK: 495 case LK_PREFIX_KEY_DOWN: 496 case LK_MODE_CHANGE_ACK: 497 case LK_RESPONSE_RESERVED: 498 DBG (KERN_INFO "Got %s and don't know how to handle...\n", 499 response_name (data)); 500 break; 501 502 default: 503 if (lk->keycode[data] != KEY_RESERVED) { 504 input_regs (lk->dev, regs); 505 if (!test_bit (lk->keycode[data], lk->dev->key)) 506 input_report_key (lk->dev, lk->keycode[data], 1); 507 else 508 input_report_key (lk->dev, lk->keycode[data], 0); 509 input_sync (lk->dev); 510 } else 511 printk (KERN_WARNING "%s: Unknown key with " 512 "scancode 0x%02x on %s.\n", 513 __FILE__, data, lk->name); 514 } 515 516 return IRQ_HANDLED; 517 } 518 519 /* 520 * lkkbd_event() handles events from the input module. 521 */ 522 static int 523 lkkbd_event (struct input_dev *dev, unsigned int type, unsigned int code, 524 int value) 525 { 526 struct lkkbd *lk = dev->private; 527 unsigned char leds_on = 0; 528 unsigned char leds_off = 0; 529 530 switch (type) { 531 case EV_LED: 532 CHECK_LED (lk, leds_on, leds_off, LED_CAPSL, LK_LED_SHIFTLOCK); 533 CHECK_LED (lk, leds_on, leds_off, LED_COMPOSE, LK_LED_COMPOSE); 534 CHECK_LED (lk, leds_on, leds_off, LED_SCROLLL, LK_LED_SCROLLLOCK); 535 CHECK_LED (lk, leds_on, leds_off, LED_SLEEP, LK_LED_WAIT); 536 if (leds_on != 0) { 537 lk->serio->write (lk->serio, LK_CMD_LED_ON); 538 lk->serio->write (lk->serio, leds_on); 539 } 540 if (leds_off != 0) { 541 lk->serio->write (lk->serio, LK_CMD_LED_OFF); 542 lk->serio->write (lk->serio, leds_off); 543 } 544 return 0; 545 546 case EV_SND: 547 switch (code) { 548 case SND_CLICK: 549 if (value == 0) { 550 DBG ("%s: Deactivating key clicks\n", __FUNCTION__); 551 lk->serio->write (lk->serio, LK_CMD_DISABLE_KEYCLICK); 552 lk->serio->write (lk->serio, LK_CMD_DISABLE_CTRCLICK); 553 } else { 554 DBG ("%s: Activating key clicks\n", __FUNCTION__); 555 lk->serio->write (lk->serio, LK_CMD_ENABLE_KEYCLICK); 556 lk->serio->write (lk->serio, volume_to_hw (lk->keyclick_volume)); 557 lk->serio->write (lk->serio, LK_CMD_ENABLE_CTRCLICK); 558 lk->serio->write (lk->serio, volume_to_hw (lk->ctrlclick_volume)); 559 } 560 return 0; 561 562 case SND_BELL: 563 if (value != 0) 564 lk->serio->write (lk->serio, LK_CMD_SOUND_BELL); 565 566 return 0; 567 } 568 break; 569 570 default: 571 printk (KERN_ERR "%s (): Got unknown type %d, code %d, value %d\n", 572 __FUNCTION__, type, code, value); 573 } 574 575 return -1; 576 } 577 578 /* 579 * lkkbd_reinit() sets leds and beeps to a state the computer remembers they 580 * were in. 581 */ 582 static void 583 lkkbd_reinit (void *data) 584 { 585 struct lkkbd *lk = data; 586 int division; 587 unsigned char leds_on = 0; 588 unsigned char leds_off = 0; 589 590 /* Ask for ID */ 591 lk->serio->write (lk->serio, LK_CMD_REQUEST_ID); 592 593 /* Reset parameters */ 594 lk->serio->write (lk->serio, LK_CMD_SET_DEFAULTS); 595 596 /* Set LEDs */ 597 CHECK_LED (lk, leds_on, leds_off, LED_CAPSL, LK_LED_SHIFTLOCK); 598 CHECK_LED (lk, leds_on, leds_off, LED_COMPOSE, LK_LED_COMPOSE); 599 CHECK_LED (lk, leds_on, leds_off, LED_SCROLLL, LK_LED_SCROLLLOCK); 600 CHECK_LED (lk, leds_on, leds_off, LED_SLEEP, LK_LED_WAIT); 601 if (leds_on != 0) { 602 lk->serio->write (lk->serio, LK_CMD_LED_ON); 603 lk->serio->write (lk->serio, leds_on); 604 } 605 if (leds_off != 0) { 606 lk->serio->write (lk->serio, LK_CMD_LED_OFF); 607 lk->serio->write (lk->serio, leds_off); 608 } 609 610 /* 611 * Try to activate extended LK401 mode. This command will 612 * only work with a LK401 keyboard and grants access to 613 * LAlt, RAlt, RCompose and RShift. 614 */ 615 lk->serio->write (lk->serio, LK_CMD_ENABLE_LK401); 616 617 /* Set all keys to UPDOWN mode */ 618 for (division = 1; division <= 14; division++) 619 lk->serio->write (lk->serio, LK_CMD_SET_MODE (LK_MODE_UPDOWN, 620 division)); 621 622 /* Enable bell and set volume */ 623 lk->serio->write (lk->serio, LK_CMD_ENABLE_BELL); 624 lk->serio->write (lk->serio, volume_to_hw (lk->bell_volume)); 625 626 /* Enable/disable keyclick (and possibly set volume) */ 627 if (test_bit (SND_CLICK, lk->dev->snd)) { 628 lk->serio->write (lk->serio, LK_CMD_ENABLE_KEYCLICK); 629 lk->serio->write (lk->serio, volume_to_hw (lk->keyclick_volume)); 630 lk->serio->write (lk->serio, LK_CMD_ENABLE_CTRCLICK); 631 lk->serio->write (lk->serio, volume_to_hw (lk->ctrlclick_volume)); 632 } else { 633 lk->serio->write (lk->serio, LK_CMD_DISABLE_KEYCLICK); 634 lk->serio->write (lk->serio, LK_CMD_DISABLE_CTRCLICK); 635 } 636 637 /* Sound the bell if needed */ 638 if (test_bit (SND_BELL, lk->dev->snd)) 639 lk->serio->write (lk->serio, LK_CMD_SOUND_BELL); 640 } 641 642 /* 643 * lkkbd_connect() probes for a LK keyboard and fills the necessary structures. 644 */ 645 static int 646 lkkbd_connect (struct serio *serio, struct serio_driver *drv) 647 { 648 struct lkkbd *lk; 649 struct input_dev *input_dev; 650 int i; 651 int err; 652 653 lk = kzalloc (sizeof (struct lkkbd), GFP_KERNEL); 654 input_dev = input_allocate_device (); 655 if (!lk || !input_dev) { 656 err = -ENOMEM; 657 goto fail; 658 } 659 660 lk->serio = serio; 661 lk->dev = input_dev; 662 INIT_WORK (&lk->tq, lkkbd_reinit, lk); 663 lk->bell_volume = bell_volume; 664 lk->keyclick_volume = keyclick_volume; 665 lk->ctrlclick_volume = ctrlclick_volume; 666 memcpy (lk->keycode, lkkbd_keycode, sizeof (lk_keycode_t) * LK_NUM_KEYCODES); 667 668 strlcpy (lk->name, "DEC LK keyboard", sizeof(lk->name)); 669 snprintf (lk->phys, sizeof(lk->phys), "%s/input0", serio->phys); 670 671 input_dev->name = lk->name; 672 input_dev->phys = lk->phys; 673 input_dev->id.bustype = BUS_RS232; 674 input_dev->id.vendor = SERIO_LKKBD; 675 input_dev->id.product = 0; 676 input_dev->id.version = 0x0100; 677 input_dev->cdev.dev = &serio->dev; 678 input_dev->event = lkkbd_event; 679 input_dev->private = lk; 680 681 set_bit (EV_KEY, input_dev->evbit); 682 set_bit (EV_LED, input_dev->evbit); 683 set_bit (EV_SND, input_dev->evbit); 684 set_bit (EV_REP, input_dev->evbit); 685 set_bit (LED_CAPSL, input_dev->ledbit); 686 set_bit (LED_SLEEP, input_dev->ledbit); 687 set_bit (LED_COMPOSE, input_dev->ledbit); 688 set_bit (LED_SCROLLL, input_dev->ledbit); 689 set_bit (SND_BELL, input_dev->sndbit); 690 set_bit (SND_CLICK, input_dev->sndbit); 691 692 input_dev->keycode = lk->keycode; 693 input_dev->keycodesize = sizeof (lk_keycode_t); 694 input_dev->keycodemax = LK_NUM_KEYCODES; 695 for (i = 0; i < LK_NUM_KEYCODES; i++) 696 set_bit (lk->keycode[i], input_dev->keybit); 697 698 serio_set_drvdata (serio, lk); 699 700 err = serio_open (serio, drv); 701 if (err) 702 goto fail; 703 704 input_register_device (lk->dev); 705 lk->serio->write (lk->serio, LK_CMD_POWERCYCLE_RESET); 706 707 return 0; 708 709 fail: serio_set_drvdata (serio, NULL); 710 input_free_device (input_dev); 711 kfree (lk); 712 return err; 713 } 714 715 /* 716 * lkkbd_disconnect() unregisters and closes behind us. 717 */ 718 static void 719 lkkbd_disconnect (struct serio *serio) 720 { 721 struct lkkbd *lk = serio_get_drvdata (serio); 722 723 input_get_device (lk->dev); 724 input_unregister_device (lk->dev); 725 serio_close (serio); 726 serio_set_drvdata (serio, NULL); 727 input_put_device (lk->dev); 728 kfree (lk); 729 } 730 731 static struct serio_device_id lkkbd_serio_ids[] = { 732 { 733 .type = SERIO_RS232, 734 .proto = SERIO_LKKBD, 735 .id = SERIO_ANY, 736 .extra = SERIO_ANY, 737 }, 738 { 0 } 739 }; 740 741 MODULE_DEVICE_TABLE(serio, lkkbd_serio_ids); 742 743 static struct serio_driver lkkbd_drv = { 744 .driver = { 745 .name = "lkkbd", 746 }, 747 .description = DRIVER_DESC, 748 .id_table = lkkbd_serio_ids, 749 .connect = lkkbd_connect, 750 .disconnect = lkkbd_disconnect, 751 .interrupt = lkkbd_interrupt, 752 }; 753 754 /* 755 * The functions for insering/removing us as a module. 756 */ 757 static int __init 758 lkkbd_init (void) 759 { 760 serio_register_driver(&lkkbd_drv); 761 return 0; 762 } 763 764 static void __exit 765 lkkbd_exit (void) 766 { 767 serio_unregister_driver(&lkkbd_drv); 768 } 769 770 module_init (lkkbd_init); 771 module_exit (lkkbd_exit); 772 773