Merge branch 'mini2440-dev-unlikely' into mini2440-dev
[linux-2.6/mini2440.git] / drivers / input / keyboard / lkkbd.c
blobf9847e0fb5539011be9eb92590887d00a29ab73e
1 /*
2 * Copyright (C) 2004 by Jan-Benedict Glaw <jbglaw@lug-owl.de>
3 */
5 /*
6 * LK keyboard driver for Linux, based on sunkbd.c (C) by Vojtech Pavlik
7 */
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).
14 * DISCLAIMER: This works for _me_. If you break anything by using the
15 * information given below, I will _not_ be liable!
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!!!
23 * Pin numbers for DE9 and DB25 are noted on the plug (quite small:). For
24 * RJ10, it's like this:
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).
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
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.
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.
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
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>
73 #define DRIVER_DESC "LK keyboard driver"
75 MODULE_AUTHOR ("Jan-Benedict Glaw <jbglaw@lug-owl.de>");
76 MODULE_DESCRIPTION (DRIVER_DESC);
77 MODULE_LICENSE ("GPL");
80 * Known parameters:
81 * bell_volume
82 * keyclick_volume
83 * ctrlclick_volume
85 * Please notice that there's not yet an API to set these at runtime.
87 static int bell_volume = 100; /* % */
88 module_param (bell_volume, int, 0);
89 MODULE_PARM_DESC (bell_volume, "Bell volume (in %). default is 100%");
91 static int keyclick_volume = 100; /* % */
92 module_param (keyclick_volume, int, 0);
93 MODULE_PARM_DESC (keyclick_volume, "Keyclick volume (in %), default is 100%");
95 static int ctrlclick_volume = 100; /* % */
96 module_param (ctrlclick_volume, int, 0);
97 MODULE_PARM_DESC (ctrlclick_volume, "Ctrlclick volume (in %), default is 100%");
99 static int lk201_compose_is_alt;
100 module_param (lk201_compose_is_alt, int, 0);
101 MODULE_PARM_DESC (lk201_compose_is_alt, "If set non-zero, LK201' Compose key "
102 "will act as an Alt key");
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
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
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))
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
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
153 #define LK_NUM_KEYCODES 256
154 #define LK_NUM_IGNORE_BYTES 6
155 typedef u_int16_t lk_keycode_t;
159 static lk_keycode_t lkkbd_keycode[LK_NUM_KEYCODES] = {
160 [0x56] = KEY_F1,
161 [0x57] = KEY_F2,
162 [0x58] = KEY_F3,
163 [0x59] = KEY_F4,
164 [0x5a] = KEY_F5,
165 [0x64] = KEY_F6,
166 [0x65] = KEY_F7,
167 [0x66] = KEY_F8,
168 [0x67] = KEY_F9,
169 [0x68] = KEY_F10,
170 [0x71] = KEY_F11,
171 [0x72] = KEY_F12,
172 [0x73] = KEY_F13,
173 [0x74] = KEY_F14,
174 [0x7c] = KEY_F15,
175 [0x7d] = KEY_F16,
176 [0x80] = KEY_F17,
177 [0x81] = KEY_F18,
178 [0x82] = KEY_F19,
179 [0x83] = KEY_F20,
180 [0x8a] = KEY_FIND,
181 [0x8b] = KEY_INSERT,
182 [0x8c] = KEY_DELETE,
183 [0x8d] = KEY_SELECT,
184 [0x8e] = KEY_PAGEUP,
185 [0x8f] = KEY_PAGEDOWN,
186 [0x92] = KEY_KP0,
187 [0x94] = KEY_KPDOT,
188 [0x95] = KEY_KPENTER,
189 [0x96] = KEY_KP1,
190 [0x97] = KEY_KP2,
191 [0x98] = KEY_KP3,
192 [0x99] = KEY_KP4,
193 [0x9a] = KEY_KP5,
194 [0x9b] = KEY_KP6,
195 [0x9c] = KEY_KPCOMMA,
196 [0x9d] = KEY_KP7,
197 [0x9e] = KEY_KP8,
198 [0x9f] = KEY_KP9,
199 [0xa0] = KEY_KPMINUS,
200 [0xa1] = KEY_PROG1,
201 [0xa2] = KEY_PROG2,
202 [0xa3] = KEY_PROG3,
203 [0xa4] = KEY_PROG4,
204 [0xa7] = KEY_LEFT,
205 [0xa8] = KEY_RIGHT,
206 [0xa9] = KEY_DOWN,
207 [0xaa] = KEY_UP,
208 [0xab] = KEY_RIGHTSHIFT,
209 [0xac] = KEY_LEFTALT,
210 [0xad] = KEY_COMPOSE, /* Right Compose, that is. */
211 [0xae] = KEY_LEFTSHIFT, /* Same as KEY_RIGHTSHIFT on LK201 */
212 [0xaf] = KEY_LEFTCTRL,
213 [0xb0] = KEY_CAPSLOCK,
214 [0xb1] = KEY_COMPOSE, /* Left Compose, that is. */
215 [0xb2] = KEY_RIGHTALT,
216 [0xbc] = KEY_BACKSPACE,
217 [0xbd] = KEY_ENTER,
218 [0xbe] = KEY_TAB,
219 [0xbf] = KEY_ESC,
220 [0xc0] = KEY_1,
221 [0xc1] = KEY_Q,
222 [0xc2] = KEY_A,
223 [0xc3] = KEY_Z,
224 [0xc5] = KEY_2,
225 [0xc6] = KEY_W,
226 [0xc7] = KEY_S,
227 [0xc8] = KEY_X,
228 [0xc9] = KEY_102ND,
229 [0xcb] = KEY_3,
230 [0xcc] = KEY_E,
231 [0xcd] = KEY_D,
232 [0xce] = KEY_C,
233 [0xd0] = KEY_4,
234 [0xd1] = KEY_R,
235 [0xd2] = KEY_F,
236 [0xd3] = KEY_V,
237 [0xd4] = KEY_SPACE,
238 [0xd6] = KEY_5,
239 [0xd7] = KEY_T,
240 [0xd8] = KEY_G,
241 [0xd9] = KEY_B,
242 [0xdb] = KEY_6,
243 [0xdc] = KEY_Y,
244 [0xdd] = KEY_H,
245 [0xde] = KEY_N,
246 [0xe0] = KEY_7,
247 [0xe1] = KEY_U,
248 [0xe2] = KEY_J,
249 [0xe3] = KEY_M,
250 [0xe5] = KEY_8,
251 [0xe6] = KEY_I,
252 [0xe7] = KEY_K,
253 [0xe8] = KEY_COMMA,
254 [0xea] = KEY_9,
255 [0xeb] = KEY_O,
256 [0xec] = KEY_L,
257 [0xed] = KEY_DOT,
258 [0xef] = KEY_0,
259 [0xf0] = KEY_P,
260 [0xf2] = KEY_SEMICOLON,
261 [0xf3] = KEY_SLASH,
262 [0xf5] = KEY_EQUAL,
263 [0xf6] = KEY_RIGHTBRACE,
264 [0xf7] = KEY_BACKSLASH,
265 [0xf9] = KEY_MINUS,
266 [0xfa] = KEY_LEFTBRACE,
267 [0xfb] = KEY_APOSTROPHE,
270 #define CHECK_LED(LK, VAR_ON, VAR_OFF, LED, BITS) do { \
271 if (test_bit (LED, (LK)->dev->led)) \
272 VAR_ON |= BITS; \
273 else \
274 VAR_OFF |= BITS; \
275 } while (0)
278 * Per-keyboard data
280 struct lkkbd {
281 lk_keycode_t keycode[LK_NUM_KEYCODES];
282 int ignore_bytes;
283 unsigned char id[LK_NUM_IGNORE_BYTES];
284 struct input_dev *dev;
285 struct serio *serio;
286 struct work_struct tq;
287 char name[64];
288 char phys[32];
289 char type;
290 int bell_volume;
291 int keyclick_volume;
292 int ctrlclick_volume;
295 #ifdef LKKBD_DEBUG
297 * Responses from the keyboard and mapping back to their names.
299 static struct {
300 unsigned char value;
301 unsigned char *name;
302 } lk_response[] = {
303 #define RESPONSE(x) { .value = (x), .name = #x, }
304 RESPONSE (LK_STUCK_KEY),
305 RESPONSE (LK_SELFTEST_FAILED),
306 RESPONSE (LK_ALL_KEYS_UP),
307 RESPONSE (LK_METRONOME),
308 RESPONSE (LK_OUTPUT_ERROR),
309 RESPONSE (LK_INPUT_ERROR),
310 RESPONSE (LK_KBD_LOCKED),
311 RESPONSE (LK_KBD_TEST_MODE_ACK),
312 RESPONSE (LK_PREFIX_KEY_DOWN),
313 RESPONSE (LK_MODE_CHANGE_ACK),
314 RESPONSE (LK_RESPONSE_RESERVED),
315 #undef RESPONSE
318 static unsigned char *
319 response_name (unsigned char value)
321 int i;
323 for (i = 0; i < ARRAY_SIZE (lk_response); i++)
324 if (lk_response[i].value == value)
325 return lk_response[i].name;
327 return "<unknown>";
329 #endif /* LKKBD_DEBUG */
332 * Calculate volume parameter byte for a given volume.
334 static unsigned char
335 volume_to_hw (int volume_percent)
337 unsigned char ret = 0;
339 if (volume_percent < 0)
340 volume_percent = 0;
341 if (volume_percent > 100)
342 volume_percent = 100;
344 if (volume_percent >= 0)
345 ret = 7;
346 if (volume_percent >= 13) /* 12.5 */
347 ret = 6;
348 if (volume_percent >= 25)
349 ret = 5;
350 if (volume_percent >= 38) /* 37.5 */
351 ret = 4;
352 if (volume_percent >= 50)
353 ret = 3;
354 if (volume_percent >= 63) /* 62.5 */
355 ret = 2; /* This is the default volume */
356 if (volume_percent >= 75)
357 ret = 1;
358 if (volume_percent >= 88) /* 87.5 */
359 ret = 0;
361 ret |= 0x80;
363 return ret;
366 static void
367 lkkbd_detection_done (struct lkkbd *lk)
369 int i;
372 * Reset setting for Compose key. Let Compose be KEY_COMPOSE.
374 lk->keycode[0xb1] = KEY_COMPOSE;
377 * Print keyboard name and modify Compose=Alt on user's request.
379 switch (lk->id[4]) {
380 case 1:
381 strlcpy (lk->name, "DEC LK201 keyboard",
382 sizeof (lk->name));
384 if (lk201_compose_is_alt)
385 lk->keycode[0xb1] = KEY_LEFTALT;
386 break;
388 case 2:
389 strlcpy (lk->name, "DEC LK401 keyboard",
390 sizeof (lk->name));
391 break;
393 default:
394 strlcpy (lk->name, "Unknown DEC keyboard",
395 sizeof (lk->name));
396 printk (KERN_ERR "lkkbd: keyboard on %s is unknown, "
397 "please report to Jan-Benedict Glaw "
398 "<jbglaw@lug-owl.de>\n", lk->phys);
399 printk (KERN_ERR "lkkbd: keyboard ID'ed as:");
400 for (i = 0; i < LK_NUM_IGNORE_BYTES; i++)
401 printk (" 0x%02x", lk->id[i]);
402 printk ("\n");
403 break;
405 printk (KERN_INFO "lkkbd: keyboard on %s identified as: %s\n",
406 lk->phys, lk->name);
409 * Report errors during keyboard boot-up.
411 switch (lk->id[2]) {
412 case 0x00:
413 /* All okay */
414 break;
416 case LK_STUCK_KEY:
417 printk (KERN_ERR "lkkbd: Stuck key on keyboard at "
418 "%s\n", lk->phys);
419 break;
421 case LK_SELFTEST_FAILED:
422 printk (KERN_ERR "lkkbd: Selftest failed on keyboard "
423 "at %s, keyboard may not work "
424 "properly\n", lk->phys);
425 break;
427 default:
428 printk (KERN_ERR "lkkbd: Unknown error %02x on "
429 "keyboard at %s\n", lk->id[2],
430 lk->phys);
431 break;
435 * Try to hint user if there's a stuck key.
437 if (lk->id[2] == LK_STUCK_KEY && lk->id[3] != 0)
438 printk (KERN_ERR "Scancode of stuck key is 0x%02x, keycode "
439 "is 0x%04x\n", lk->id[3],
440 lk->keycode[lk->id[3]]);
442 return;
446 * lkkbd_interrupt() is called by the low level driver when a character
447 * is received.
449 static irqreturn_t
450 lkkbd_interrupt (struct serio *serio, unsigned char data, unsigned int flags)
452 struct lkkbd *lk = serio_get_drvdata (serio);
453 int i;
455 DBG (KERN_INFO "Got byte 0x%02x\n", data);
457 if (lk->ignore_bytes > 0) {
458 DBG (KERN_INFO "Ignoring a byte on %s\n", lk->name);
459 lk->id[LK_NUM_IGNORE_BYTES - lk->ignore_bytes--] = data;
461 if (lk->ignore_bytes == 0)
462 lkkbd_detection_done (lk);
464 return IRQ_HANDLED;
467 switch (data) {
468 case LK_ALL_KEYS_UP:
469 for (i = 0; i < ARRAY_SIZE (lkkbd_keycode); i++)
470 if (lk->keycode[i] != KEY_RESERVED)
471 input_report_key (lk->dev, lk->keycode[i], 0);
472 input_sync (lk->dev);
473 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;
482 case LK_METRONOME:
483 case LK_OUTPUT_ERROR:
484 case LK_INPUT_ERROR:
485 case LK_KBD_LOCKED:
486 case LK_KBD_TEST_MODE_ACK:
487 case LK_PREFIX_KEY_DOWN:
488 case LK_MODE_CHANGE_ACK:
489 case LK_RESPONSE_RESERVED:
490 DBG (KERN_INFO "Got %s and don't know how to handle...\n",
491 response_name (data));
492 break;
494 default:
495 if (lk->keycode[data] != KEY_RESERVED) {
496 if (!test_bit (lk->keycode[data], lk->dev->key))
497 input_report_key (lk->dev, lk->keycode[data], 1);
498 else
499 input_report_key (lk->dev, lk->keycode[data], 0);
500 input_sync (lk->dev);
501 } else
502 printk (KERN_WARNING "%s: Unknown key with "
503 "scancode 0x%02x on %s.\n",
504 __FILE__, data, lk->name);
507 return IRQ_HANDLED;
511 * lkkbd_event() handles events from the input module.
513 static int
514 lkkbd_event (struct input_dev *dev, unsigned int type, unsigned int code,
515 int value)
517 struct lkkbd *lk = input_get_drvdata (dev);
518 unsigned char leds_on = 0;
519 unsigned char leds_off = 0;
521 switch (type) {
522 case EV_LED:
523 CHECK_LED (lk, leds_on, leds_off, LED_CAPSL, LK_LED_SHIFTLOCK);
524 CHECK_LED (lk, leds_on, leds_off, LED_COMPOSE, LK_LED_COMPOSE);
525 CHECK_LED (lk, leds_on, leds_off, LED_SCROLLL, LK_LED_SCROLLLOCK);
526 CHECK_LED (lk, leds_on, leds_off, LED_SLEEP, LK_LED_WAIT);
527 if (leds_on != 0) {
528 serio_write (lk->serio, LK_CMD_LED_ON);
529 serio_write (lk->serio, leds_on);
531 if (leds_off != 0) {
532 serio_write (lk->serio, LK_CMD_LED_OFF);
533 serio_write (lk->serio, leds_off);
535 return 0;
537 case EV_SND:
538 switch (code) {
539 case SND_CLICK:
540 if (value == 0) {
541 DBG ("%s: Deactivating key clicks\n", __func__);
542 serio_write (lk->serio, LK_CMD_DISABLE_KEYCLICK);
543 serio_write (lk->serio, LK_CMD_DISABLE_CTRCLICK);
544 } else {
545 DBG ("%s: Activating key clicks\n", __func__);
546 serio_write (lk->serio, LK_CMD_ENABLE_KEYCLICK);
547 serio_write (lk->serio, volume_to_hw (lk->keyclick_volume));
548 serio_write (lk->serio, LK_CMD_ENABLE_CTRCLICK);
549 serio_write (lk->serio, volume_to_hw (lk->ctrlclick_volume));
551 return 0;
553 case SND_BELL:
554 if (value != 0)
555 serio_write (lk->serio, LK_CMD_SOUND_BELL);
557 return 0;
559 break;
561 default:
562 printk (KERN_ERR "%s (): Got unknown type %d, code %d, value %d\n",
563 __func__, type, code, value);
566 return -1;
570 * lkkbd_reinit() sets leds and beeps to a state the computer remembers they
571 * were in.
573 static void
574 lkkbd_reinit (struct work_struct *work)
576 struct lkkbd *lk = container_of(work, struct lkkbd, tq);
577 int division;
578 unsigned char leds_on = 0;
579 unsigned char leds_off = 0;
581 /* Ask for ID */
582 serio_write (lk->serio, LK_CMD_REQUEST_ID);
584 /* Reset parameters */
585 serio_write (lk->serio, LK_CMD_SET_DEFAULTS);
587 /* Set LEDs */
588 CHECK_LED (lk, leds_on, leds_off, LED_CAPSL, LK_LED_SHIFTLOCK);
589 CHECK_LED (lk, leds_on, leds_off, LED_COMPOSE, LK_LED_COMPOSE);
590 CHECK_LED (lk, leds_on, leds_off, LED_SCROLLL, LK_LED_SCROLLLOCK);
591 CHECK_LED (lk, leds_on, leds_off, LED_SLEEP, LK_LED_WAIT);
592 if (leds_on != 0) {
593 serio_write (lk->serio, LK_CMD_LED_ON);
594 serio_write (lk->serio, leds_on);
596 if (leds_off != 0) {
597 serio_write (lk->serio, LK_CMD_LED_OFF);
598 serio_write (lk->serio, leds_off);
602 * Try to activate extended LK401 mode. This command will
603 * only work with a LK401 keyboard and grants access to
604 * LAlt, RAlt, RCompose and RShift.
606 serio_write (lk->serio, LK_CMD_ENABLE_LK401);
608 /* Set all keys to UPDOWN mode */
609 for (division = 1; division <= 14; division++)
610 serio_write (lk->serio, LK_CMD_SET_MODE (LK_MODE_UPDOWN,
611 division));
613 /* Enable bell and set volume */
614 serio_write (lk->serio, LK_CMD_ENABLE_BELL);
615 serio_write (lk->serio, volume_to_hw (lk->bell_volume));
617 /* Enable/disable keyclick (and possibly set volume) */
618 if (test_bit (SND_CLICK, lk->dev->snd)) {
619 serio_write (lk->serio, LK_CMD_ENABLE_KEYCLICK);
620 serio_write (lk->serio, volume_to_hw (lk->keyclick_volume));
621 serio_write (lk->serio, LK_CMD_ENABLE_CTRCLICK);
622 serio_write (lk->serio, volume_to_hw (lk->ctrlclick_volume));
623 } else {
624 serio_write (lk->serio, LK_CMD_DISABLE_KEYCLICK);
625 serio_write (lk->serio, LK_CMD_DISABLE_CTRCLICK);
628 /* Sound the bell if needed */
629 if (test_bit (SND_BELL, lk->dev->snd))
630 serio_write (lk->serio, LK_CMD_SOUND_BELL);
634 * lkkbd_connect() probes for a LK keyboard and fills the necessary structures.
636 static int
637 lkkbd_connect (struct serio *serio, struct serio_driver *drv)
639 struct lkkbd *lk;
640 struct input_dev *input_dev;
641 int i;
642 int err;
644 lk = kzalloc (sizeof (struct lkkbd), GFP_KERNEL);
645 input_dev = input_allocate_device ();
646 if (!lk || !input_dev) {
647 err = -ENOMEM;
648 goto fail1;
651 lk->serio = serio;
652 lk->dev = input_dev;
653 INIT_WORK (&lk->tq, lkkbd_reinit);
654 lk->bell_volume = bell_volume;
655 lk->keyclick_volume = keyclick_volume;
656 lk->ctrlclick_volume = ctrlclick_volume;
657 memcpy (lk->keycode, lkkbd_keycode, sizeof (lk_keycode_t) * LK_NUM_KEYCODES);
659 strlcpy (lk->name, "DEC LK keyboard", sizeof(lk->name));
660 snprintf (lk->phys, sizeof(lk->phys), "%s/input0", serio->phys);
662 input_dev->name = lk->name;
663 input_dev->phys = lk->phys;
664 input_dev->id.bustype = BUS_RS232;
665 input_dev->id.vendor = SERIO_LKKBD;
666 input_dev->id.product = 0;
667 input_dev->id.version = 0x0100;
668 input_dev->dev.parent = &serio->dev;
669 input_dev->event = lkkbd_event;
671 input_set_drvdata (input_dev, lk);
673 set_bit (EV_KEY, input_dev->evbit);
674 set_bit (EV_LED, input_dev->evbit);
675 set_bit (EV_SND, input_dev->evbit);
676 set_bit (EV_REP, input_dev->evbit);
677 set_bit (LED_CAPSL, input_dev->ledbit);
678 set_bit (LED_SLEEP, input_dev->ledbit);
679 set_bit (LED_COMPOSE, input_dev->ledbit);
680 set_bit (LED_SCROLLL, input_dev->ledbit);
681 set_bit (SND_BELL, input_dev->sndbit);
682 set_bit (SND_CLICK, input_dev->sndbit);
684 input_dev->keycode = lk->keycode;
685 input_dev->keycodesize = sizeof (lk_keycode_t);
686 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 __clear_bit(KEY_RESERVED, input_dev->keybit);
692 serio_set_drvdata (serio, lk);
694 err = serio_open (serio, drv);
695 if (err)
696 goto fail2;
698 err = input_register_device (lk->dev);
699 if (err)
700 goto fail3;
702 serio_write (lk->serio, LK_CMD_POWERCYCLE_RESET);
704 return 0;
706 fail3: serio_close (serio);
707 fail2: serio_set_drvdata (serio, NULL);
708 fail1: input_free_device (input_dev);
709 kfree (lk);
710 return err;
714 * lkkbd_disconnect() unregisters and closes behind us.
716 static void
717 lkkbd_disconnect (struct serio *serio)
719 struct lkkbd *lk = serio_get_drvdata (serio);
721 input_get_device (lk->dev);
722 input_unregister_device (lk->dev);
723 serio_close (serio);
724 serio_set_drvdata (serio, NULL);
725 input_put_device (lk->dev);
726 kfree (lk);
729 static struct serio_device_id lkkbd_serio_ids[] = {
731 .type = SERIO_RS232,
732 .proto = SERIO_LKKBD,
733 .id = SERIO_ANY,
734 .extra = SERIO_ANY,
736 { 0 }
739 MODULE_DEVICE_TABLE(serio, lkkbd_serio_ids);
741 static struct serio_driver lkkbd_drv = {
742 .driver = {
743 .name = "lkkbd",
745 .description = DRIVER_DESC,
746 .id_table = lkkbd_serio_ids,
747 .connect = lkkbd_connect,
748 .disconnect = lkkbd_disconnect,
749 .interrupt = lkkbd_interrupt,
753 * The functions for insering/removing us as a module.
755 static int __init
756 lkkbd_init (void)
758 return serio_register_driver(&lkkbd_drv);
761 static void __exit
762 lkkbd_exit (void)
764 serio_unregister_driver(&lkkbd_drv);
767 module_init (lkkbd_init);
768 module_exit (lkkbd_exit);