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(LED, BITS) do { \ 277 if (test_bit (LED, lk->dev->led)) \ 278 leds_on |= BITS; \ 279 else \ 280 leds_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 /* 302 * Calculate volume parameter byte for a given volume. 303 */ 304 static unsigned char 305 volume_to_hw (int volume_percent) 306 { 307 unsigned char ret = 0; 308 309 if (volume_percent < 0) 310 volume_percent = 0; 311 if (volume_percent > 100) 312 volume_percent = 100; 313 314 if (volume_percent >= 0) 315 ret = 7; 316 if (volume_percent >= 13) /* 12.5 */ 317 ret = 6; 318 if (volume_percent >= 25) 319 ret = 5; 320 if (volume_percent >= 38) /* 37.5 */ 321 ret = 4; 322 if (volume_percent >= 50) 323 ret = 3; 324 if (volume_percent >= 63) /* 62.5 */ 325 ret = 2; /* This is the default volume */ 326 if (volume_percent >= 75) 327 ret = 1; 328 if (volume_percent >= 88) /* 87.5 */ 329 ret = 0; 330 331 ret |= 0x80; 332 333 return ret; 334 } 335 336 static void 337 lkkbd_detection_done (struct lkkbd *lk) 338 { 339 int i; 340 341 /* 342 * Reset setting for Compose key. Let Compose be KEY_COMPOSE. 343 */ 344 lk->keycode[0xb1] = KEY_COMPOSE; 345 346 /* 347 * Print keyboard name and modify Compose=Alt on user's request. 348 */ 349 switch (lk->id[4]) { 350 case 1: 351 sprintf (lk->name, "DEC LK201 keyboard"); 352 353 if (lk201_compose_is_alt) 354 lk->keycode[0xb1] = KEY_LEFTALT; 355 break; 356 357 case 2: 358 sprintf (lk->name, "DEC LK401 keyboard"); 359 break; 360 361 default: 362 sprintf (lk->name, "Unknown DEC keyboard"); 363 printk (KERN_ERR "lkkbd: keyboard on %s is unknown, " 364 "please report to Jan-Benedict Glaw " 365 "<jbglaw@lug-owl.de>\n", lk->phys); 366 printk (KERN_ERR "lkkbd: keyboard ID'ed as:"); 367 for (i = 0; i < LK_NUM_IGNORE_BYTES; i++) 368 printk (" 0x%02x", lk->id[i]); 369 printk ("\n"); 370 break; 371 } 372 printk (KERN_INFO "lkkbd: keyboard on %s identified as: %s\n", 373 lk->phys, lk->name); 374 375 /* 376 * Report errors during keyboard boot-up. 377 */ 378 switch (lk->id[2]) { 379 case 0x00: 380 /* All okay */ 381 break; 382 383 case LK_STUCK_KEY: 384 printk (KERN_ERR "lkkbd: Stuck key on keyboard at " 385 "%s\n", lk->phys); 386 break; 387 388 case LK_SELFTEST_FAILED: 389 printk (KERN_ERR "lkkbd: Selftest failed on keyboard " 390 "at %s, keyboard may not work " 391 "properly\n", lk->phys); 392 break; 393 394 default: 395 printk (KERN_ERR "lkkbd: Unknown error %02x on " 396 "keyboard at %s\n", lk->id[2], 397 lk->phys); 398 break; 399 } 400 401 /* 402 * Try to hint user if there's a stuck key. 403 */ 404 if (lk->id[2] == LK_STUCK_KEY && lk->id[3] != 0) 405 printk (KERN_ERR "Scancode of stuck key is 0x%02x, keycode " 406 "is 0x%04x\n", lk->id[3], 407 lk->keycode[lk->id[3]]); 408 409 return; 410 } 411 412 /* 413 * lkkbd_interrupt() is called by the low level driver when a character 414 * is received. 415 */ 416 static irqreturn_t 417 lkkbd_interrupt (struct serio *serio, unsigned char data, unsigned int flags, 418 struct pt_regs *regs) 419 { 420 struct lkkbd *lk = serio_get_drvdata (serio); 421 int i; 422 423 DBG (KERN_INFO "Got byte 0x%02x\n", data); 424 425 if (lk->ignore_bytes > 0) { 426 DBG (KERN_INFO "Ignoring a byte on %s\n", lk->name); 427 lk->id[LK_NUM_IGNORE_BYTES - lk->ignore_bytes--] = data; 428 429 if (lk->ignore_bytes == 0) 430 lkkbd_detection_done (lk); 431 432 return IRQ_HANDLED; 433 } 434 435 switch (data) { 436 case LK_ALL_KEYS_UP: 437 input_regs (lk->dev, regs); 438 for (i = 0; i < ARRAY_SIZE (lkkbd_keycode); i++) 439 if (lk->keycode[i] != KEY_RESERVED) 440 input_report_key (lk->dev, lk->keycode[i], 0); 441 input_sync (lk->dev); 442 break; 443 case LK_METRONOME: 444 DBG (KERN_INFO "Got LK_METRONOME and don't " 445 "know how to handle...\n"); 446 break; 447 case LK_OUTPUT_ERROR: 448 DBG (KERN_INFO "Got LK_OUTPUT_ERROR and don't " 449 "know how to handle...\n"); 450 break; 451 case LK_INPUT_ERROR: 452 DBG (KERN_INFO "Got LK_INPUT_ERROR and don't " 453 "know how to handle...\n"); 454 break; 455 case LK_KBD_LOCKED: 456 DBG (KERN_INFO "Got LK_KBD_LOCKED and don't " 457 "know how to handle...\n"); 458 break; 459 case LK_KBD_TEST_MODE_ACK: 460 DBG (KERN_INFO "Got LK_KBD_TEST_MODE_ACK and don't " 461 "know how to handle...\n"); 462 break; 463 case LK_PREFIX_KEY_DOWN: 464 DBG (KERN_INFO "Got LK_PREFIX_KEY_DOWN and don't " 465 "know how to handle...\n"); 466 break; 467 case LK_MODE_CHANGE_ACK: 468 DBG (KERN_INFO "Got LK_MODE_CHANGE_ACK and ignored " 469 "it properly...\n"); 470 break; 471 case LK_RESPONSE_RESERVED: 472 DBG (KERN_INFO "Got LK_RESPONSE_RESERVED and don't " 473 "know how to handle...\n"); 474 break; 475 case 0x01: 476 DBG (KERN_INFO "Got 0x01, scheduling re-initialization\n"); 477 lk->ignore_bytes = LK_NUM_IGNORE_BYTES; 478 lk->id[LK_NUM_IGNORE_BYTES - lk->ignore_bytes--] = data; 479 schedule_work (&lk->tq); 480 break; 481 482 default: 483 if (lk->keycode[data] != KEY_RESERVED) { 484 input_regs (lk->dev, regs); 485 if (!test_bit (lk->keycode[data], lk->dev->key)) 486 input_report_key (lk->dev, lk->keycode[data], 1); 487 else 488 input_report_key (lk->dev, lk->keycode[data], 0); 489 input_sync (lk->dev); 490 } else 491 printk (KERN_WARNING "%s: Unknown key with " 492 "scancode 0x%02x on %s.\n", 493 __FILE__, data, lk->name); 494 } 495 496 return IRQ_HANDLED; 497 } 498 499 /* 500 * lkkbd_event() handles events from the input module. 501 */ 502 static int 503 lkkbd_event (struct input_dev *dev, unsigned int type, unsigned int code, 504 int value) 505 { 506 struct lkkbd *lk = dev->private; 507 unsigned char leds_on = 0; 508 unsigned char leds_off = 0; 509 510 switch (type) { 511 case EV_LED: 512 CHECK_LED (LED_CAPSL, LK_LED_SHIFTLOCK); 513 CHECK_LED (LED_COMPOSE, LK_LED_COMPOSE); 514 CHECK_LED (LED_SCROLLL, LK_LED_SCROLLLOCK); 515 CHECK_LED (LED_SLEEP, LK_LED_WAIT); 516 if (leds_on != 0) { 517 lk->serio->write (lk->serio, LK_CMD_LED_ON); 518 lk->serio->write (lk->serio, leds_on); 519 } 520 if (leds_off != 0) { 521 lk->serio->write (lk->serio, LK_CMD_LED_OFF); 522 lk->serio->write (lk->serio, leds_off); 523 } 524 return 0; 525 526 case EV_SND: 527 switch (code) { 528 case SND_CLICK: 529 if (value == 0) { 530 DBG ("%s: Deactivating key clicks\n", __FUNCTION__); 531 lk->serio->write (lk->serio, LK_CMD_DISABLE_KEYCLICK); 532 lk->serio->write (lk->serio, LK_CMD_DISABLE_CTRCLICK); 533 } else { 534 DBG ("%s: Activating key clicks\n", __FUNCTION__); 535 lk->serio->write (lk->serio, LK_CMD_ENABLE_KEYCLICK); 536 lk->serio->write (lk->serio, volume_to_hw (lk->keyclick_volume)); 537 lk->serio->write (lk->serio, LK_CMD_ENABLE_CTRCLICK); 538 lk->serio->write (lk->serio, volume_to_hw (lk->ctrlclick_volume)); 539 } 540 return 0; 541 542 case SND_BELL: 543 if (value != 0) 544 lk->serio->write (lk->serio, LK_CMD_SOUND_BELL); 545 546 return 0; 547 } 548 break; 549 550 default: 551 printk (KERN_ERR "%s (): Got unknown type %d, code %d, value %d\n", 552 __FUNCTION__, type, code, value); 553 } 554 555 return -1; 556 } 557 558 /* 559 * lkkbd_reinit() sets leds and beeps to a state the computer remembers they 560 * were in. 561 */ 562 static void 563 lkkbd_reinit (void *data) 564 { 565 struct lkkbd *lk = data; 566 int division; 567 unsigned char leds_on = 0; 568 unsigned char leds_off = 0; 569 570 /* Ask for ID */ 571 lk->serio->write (lk->serio, LK_CMD_REQUEST_ID); 572 573 /* Reset parameters */ 574 lk->serio->write (lk->serio, LK_CMD_SET_DEFAULTS); 575 576 /* Set LEDs */ 577 CHECK_LED (LED_CAPSL, LK_LED_SHIFTLOCK); 578 CHECK_LED (LED_COMPOSE, LK_LED_COMPOSE); 579 CHECK_LED (LED_SCROLLL, LK_LED_SCROLLLOCK); 580 CHECK_LED (LED_SLEEP, LK_LED_WAIT); 581 if (leds_on != 0) { 582 lk->serio->write (lk->serio, LK_CMD_LED_ON); 583 lk->serio->write (lk->serio, leds_on); 584 } 585 if (leds_off != 0) { 586 lk->serio->write (lk->serio, LK_CMD_LED_OFF); 587 lk->serio->write (lk->serio, leds_off); 588 } 589 590 /* 591 * Try to activate extended LK401 mode. This command will 592 * only work with a LK401 keyboard and grants access to 593 * LAlt, RAlt, RCompose and RShift. 594 */ 595 lk->serio->write (lk->serio, LK_CMD_ENABLE_LK401); 596 597 /* Set all keys to UPDOWN mode */ 598 for (division = 1; division <= 14; division++) 599 lk->serio->write (lk->serio, LK_CMD_SET_MODE (LK_MODE_UPDOWN, 600 division)); 601 602 /* Enable bell and set volume */ 603 lk->serio->write (lk->serio, LK_CMD_ENABLE_BELL); 604 lk->serio->write (lk->serio, volume_to_hw (lk->bell_volume)); 605 606 /* Enable/disable keyclick (and possibly set volume) */ 607 if (test_bit (SND_CLICK, lk->dev->snd)) { 608 lk->serio->write (lk->serio, LK_CMD_ENABLE_KEYCLICK); 609 lk->serio->write (lk->serio, volume_to_hw (lk->keyclick_volume)); 610 lk->serio->write (lk->serio, LK_CMD_ENABLE_CTRCLICK); 611 lk->serio->write (lk->serio, volume_to_hw (lk->ctrlclick_volume)); 612 } else { 613 lk->serio->write (lk->serio, LK_CMD_DISABLE_KEYCLICK); 614 lk->serio->write (lk->serio, LK_CMD_DISABLE_CTRCLICK); 615 } 616 617 /* Sound the bell if needed */ 618 if (test_bit (SND_BELL, lk->dev->snd)) 619 lk->serio->write (lk->serio, LK_CMD_SOUND_BELL); 620 } 621 622 /* 623 * lkkbd_connect() probes for a LK keyboard and fills the necessary structures. 624 */ 625 static int 626 lkkbd_connect (struct serio *serio, struct serio_driver *drv) 627 { 628 struct lkkbd *lk; 629 struct input_dev *input_dev; 630 int i; 631 int err; 632 633 lk = kzalloc (sizeof (struct lkkbd), GFP_KERNEL); 634 input_dev = input_allocate_device (); 635 if (!lk || !input_dev) { 636 err = -ENOMEM; 637 goto fail; 638 } 639 640 lk->serio = serio; 641 lk->dev = input_dev; 642 INIT_WORK (&lk->tq, lkkbd_reinit, lk); 643 lk->bell_volume = bell_volume; 644 lk->keyclick_volume = keyclick_volume; 645 lk->ctrlclick_volume = ctrlclick_volume; 646 memcpy (lk->keycode, lkkbd_keycode, sizeof (lk_keycode_t) * LK_NUM_KEYCODES); 647 648 strlcpy (lk->name, "DEC LK keyboard", sizeof(lk->name)); 649 snprintf (lk->phys, sizeof(lk->phys), "%s/input0", serio->phys); 650 651 input_dev->name = lk->name; 652 input_dev->phys = lk->phys; 653 input_dev->id.bustype = BUS_RS232; 654 input_dev->id.vendor = SERIO_LKKBD; 655 input_dev->id.product = 0; 656 input_dev->id.version = 0x0100; 657 input_dev->cdev.dev = &serio->dev; 658 input_dev->event = lkkbd_event; 659 input_dev->private = lk; 660 661 set_bit (EV_KEY, input_dev->evbit); 662 set_bit (EV_LED, input_dev->evbit); 663 set_bit (EV_SND, input_dev->evbit); 664 set_bit (EV_REP, input_dev->evbit); 665 set_bit (LED_CAPSL, input_dev->ledbit); 666 set_bit (LED_SLEEP, input_dev->ledbit); 667 set_bit (LED_COMPOSE, input_dev->ledbit); 668 set_bit (LED_SCROLLL, input_dev->ledbit); 669 set_bit (SND_BELL, input_dev->sndbit); 670 set_bit (SND_CLICK, input_dev->sndbit); 671 672 input_dev->keycode = lk->keycode; 673 input_dev->keycodesize = sizeof (lk_keycode_t); 674 input_dev->keycodemax = LK_NUM_KEYCODES; 675 for (i = 0; i < LK_NUM_KEYCODES; i++) 676 set_bit (lk->keycode[i], input_dev->keybit); 677 678 serio_set_drvdata (serio, lk); 679 680 err = serio_open (serio, drv); 681 if (err) 682 goto fail; 683 684 input_register_device (lk->dev); 685 lk->serio->write (lk->serio, LK_CMD_POWERCYCLE_RESET); 686 687 return 0; 688 689 fail: serio_set_drvdata (serio, NULL); 690 input_free_device (input_dev); 691 kfree (lk); 692 return err; 693 } 694 695 /* 696 * lkkbd_disconnect() unregisters and closes behind us. 697 */ 698 static void 699 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 } 710 711 static 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 }; 720 721 MODULE_DEVICE_TABLE(serio, lkkbd_serio_ids); 722 723 static 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 */ 737 static int __init 738 lkkbd_init (void) 739 { 740 serio_register_driver(&lkkbd_drv); 741 return 0; 742 } 743 744 static void __exit 745 lkkbd_exit (void) 746 { 747 serio_unregister_driver(&lkkbd_drv); 748 } 749 750 module_init (lkkbd_init); 751 module_exit (lkkbd_exit); 752 753