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[TG3]: Set minimal hw interrupt mitigation.
[linux-2.6/verdex.git] / drivers / input / keyboard / lkkbd.c
blob2694ff2b5beb6d7a513f0cd12382a693b24f3021
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, Lilienstraße 16, 33790 Hörste (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 = 0;
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",
427 lk->name);
428 lk->id[LK_NUM_IGNORE_BYTES - lk->ignore_bytes--] = data;
429
430 if (lk->ignore_bytes == 0)
431 lkkbd_detection_done (lk);
432
433 return IRQ_HANDLED;
434 }
435
436 switch (data) {
437 case LK_ALL_KEYS_UP:
438 input_regs (&lk->dev, regs);
439 for (i = 0; i < ARRAY_SIZE (lkkbd_keycode); i++)
440 if (lk->keycode[i] != KEY_RESERVED)
441 input_report_key (&lk->dev, lk->keycode[i], 0);
442 input_sync (&lk->dev);
443 break;
444 case LK_METRONOME:
445 DBG (KERN_INFO "Got LK_METRONOME and don't "
446 "know how to handle...\n");
447 break;
448 case LK_OUTPUT_ERROR:
449 DBG (KERN_INFO "Got LK_OUTPUT_ERROR and don't "
450 "know how to handle...\n");
451 break;
452 case LK_INPUT_ERROR:
453 DBG (KERN_INFO "Got LK_INPUT_ERROR and don't "
454 "know how to handle...\n");
455 break;
456 case LK_KBD_LOCKED:
457 DBG (KERN_INFO "Got LK_KBD_LOCKED and don't "
458 "know how to handle...\n");
459 break;
460 case LK_KBD_TEST_MODE_ACK:
461 DBG (KERN_INFO "Got LK_KBD_TEST_MODE_ACK and don't "
462 "know how to handle...\n");
463 break;
464 case LK_PREFIX_KEY_DOWN:
465 DBG (KERN_INFO "Got LK_PREFIX_KEY_DOWN and don't "
466 "know how to handle...\n");
467 break;
468 case LK_MODE_CHANGE_ACK:
469 DBG (KERN_INFO "Got LK_MODE_CHANGE_ACK and ignored "
470 "it properly...\n");
471 break;
472 case LK_RESPONSE_RESERVED:
473 DBG (KERN_INFO "Got LK_RESPONSE_RESERVED and don't "
474 "know how to handle...\n");
475 break;
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 default:
484 if (lk->keycode[data] != KEY_RESERVED) {
485 input_regs (&lk->dev, regs);
486 if (!test_bit (lk->keycode[data], lk->dev.key))
487 input_report_key (&lk->dev, lk->keycode[data], 1);
488 else
489 input_report_key (&lk->dev, lk->keycode[data], 0);
490 input_sync (&lk->dev);
491 } else
492 printk (KERN_WARNING "%s: Unknown key with "
493 "scancode 0x%02x on %s.\n",
494 __FILE__, data, lk->name);
495 }
496
497 return IRQ_HANDLED;
498 }
499
500 /*
501 * lkkbd_event() handles events from the input module.
502 */
503 static int
504 lkkbd_event (struct input_dev *dev, unsigned int type, unsigned int code,
505 int value)
506 {
507 struct lkkbd *lk = dev->private;
508 unsigned char leds_on = 0;
509 unsigned char leds_off = 0;
510
511 switch (type) {
512 case EV_LED:
513 CHECK_LED (LED_CAPSL, LK_LED_SHIFTLOCK);
514 CHECK_LED (LED_COMPOSE, LK_LED_COMPOSE);
515 CHECK_LED (LED_SCROLLL, LK_LED_SCROLLLOCK);
516 CHECK_LED (LED_SLEEP, LK_LED_WAIT);
517 if (leds_on != 0) {
518 lk->serio->write (lk->serio, LK_CMD_LED_ON);
519 lk->serio->write (lk->serio, leds_on);
520 }
521 if (leds_off != 0) {
522 lk->serio->write (lk->serio, LK_CMD_LED_OFF);
523 lk->serio->write (lk->serio, leds_off);
524 }
525 return 0;
526
527 case EV_SND:
528 switch (code) {
529 case SND_CLICK:
530 if (value == 0) {
531 DBG ("%s: Deactivating key clicks\n", __FUNCTION__);
532 lk->serio->write (lk->serio, LK_CMD_DISABLE_KEYCLICK);
533 lk->serio->write (lk->serio, LK_CMD_DISABLE_CTRCLICK);
534 } else {
535 DBG ("%s: Activating key clicks\n", __FUNCTION__);
536 lk->serio->write (lk->serio, LK_CMD_ENABLE_KEYCLICK);
537 lk->serio->write (lk->serio, volume_to_hw (lk->keyclick_volume));
538 lk->serio->write (lk->serio, LK_CMD_ENABLE_CTRCLICK);
539 lk->serio->write (lk->serio, volume_to_hw (lk->ctrlclick_volume));
540 }
541 return 0;
542
543 case SND_BELL:
544 if (value != 0)
545 lk->serio->write (lk->serio, LK_CMD_SOUND_BELL);
546
547 return 0;
548 }
549 break;
550
551 default:
552 printk (KERN_ERR "%s (): Got unknown type %d, code %d, value %d\n",
553 __FUNCTION__, type, code, value);
554 }
555
556 return -1;
557 }
558
559 /*
560 * lkkbd_reinit() sets leds and beeps to a state the computer remembers they
561 * were in.
562 */
563 static void
564 lkkbd_reinit (void *data)
565 {
566 struct lkkbd *lk = data;
567 int division;
568 unsigned char leds_on = 0;
569 unsigned char leds_off = 0;
570
571 /* Ask for ID */
572 lk->serio->write (lk->serio, LK_CMD_REQUEST_ID);
573
574 /* Reset parameters */
575 lk->serio->write (lk->serio, LK_CMD_SET_DEFAULTS);
576
577 /* Set LEDs */
578 CHECK_LED (LED_CAPSL, LK_LED_SHIFTLOCK);
579 CHECK_LED (LED_COMPOSE, LK_LED_COMPOSE);
580 CHECK_LED (LED_SCROLLL, LK_LED_SCROLLLOCK);
581 CHECK_LED (LED_SLEEP, LK_LED_WAIT);
582 if (leds_on != 0) {
583 lk->serio->write (lk->serio, LK_CMD_LED_ON);
584 lk->serio->write (lk->serio, leds_on);
585 }
586 if (leds_off != 0) {
587 lk->serio->write (lk->serio, LK_CMD_LED_OFF);
588 lk->serio->write (lk->serio, leds_off);
589 }
590
591 /*
592 * Try to activate extended LK401 mode. This command will
593 * only work with a LK401 keyboard and grants access to
594 * LAlt, RAlt, RCompose and RShift.
595 */
596 lk->serio->write (lk->serio, LK_CMD_ENABLE_LK401);
597
598 /* Set all keys to UPDOWN mode */
599 for (division = 1; division <= 14; division++)
600 lk->serio->write (lk->serio, LK_CMD_SET_MODE (LK_MODE_UPDOWN,
601 division));
602
603 /* Enable bell and set volume */
604 lk->serio->write (lk->serio, LK_CMD_ENABLE_BELL);
605 lk->serio->write (lk->serio, volume_to_hw (lk->bell_volume));
606
607 /* Enable/disable keyclick (and possibly set volume) */
608 if (test_bit (SND_CLICK, lk->dev.snd)) {
609 lk->serio->write (lk->serio, LK_CMD_ENABLE_KEYCLICK);
610 lk->serio->write (lk->serio, volume_to_hw (lk->keyclick_volume));
611 lk->serio->write (lk->serio, LK_CMD_ENABLE_CTRCLICK);
612 lk->serio->write (lk->serio, volume_to_hw (lk->ctrlclick_volume));
613 } else {
614 lk->serio->write (lk->serio, LK_CMD_DISABLE_KEYCLICK);
615 lk->serio->write (lk->serio, LK_CMD_DISABLE_CTRCLICK);
616 }
617
618 /* Sound the bell if needed */
619 if (test_bit (SND_BELL, lk->dev.snd))
620 lk->serio->write (lk->serio, LK_CMD_SOUND_BELL);
621 }
622
623 /*
624 * lkkbd_connect() probes for a LK keyboard and fills the necessary structures.
625 */
626 static int
627 lkkbd_connect (struct serio *serio, struct serio_driver *drv)
628 {
629 struct lkkbd *lk;
630 int i;
631 int err;
632
633 if (!(lk = kmalloc (sizeof (struct lkkbd), GFP_KERNEL)))
634 return -ENOMEM;
635
636 memset (lk, 0, sizeof (struct lkkbd));
637
638 init_input_dev (&lk->dev);
639 set_bit (EV_KEY, lk->dev.evbit);
640 set_bit (EV_LED, lk->dev.evbit);
641 set_bit (EV_SND, lk->dev.evbit);
642 set_bit (EV_REP, lk->dev.evbit);
643 set_bit (LED_CAPSL, lk->dev.ledbit);
644 set_bit (LED_SLEEP, lk->dev.ledbit);
645 set_bit (LED_COMPOSE, lk->dev.ledbit);
646 set_bit (LED_SCROLLL, lk->dev.ledbit);
647 set_bit (SND_BELL, lk->dev.sndbit);
648 set_bit (SND_CLICK, lk->dev.sndbit);
649
650 lk->serio = serio;
651
652 INIT_WORK (&lk->tq, lkkbd_reinit, lk);
653
654 lk->bell_volume = bell_volume;
655 lk->keyclick_volume = keyclick_volume;
656 lk->ctrlclick_volume = ctrlclick_volume;
657
658 lk->dev.keycode = lk->keycode;
659 lk->dev.keycodesize = sizeof (lk_keycode_t);
660 lk->dev.keycodemax = LK_NUM_KEYCODES;
661
662 lk->dev.event = lkkbd_event;
663 lk->dev.private = lk;
664
665 serio_set_drvdata (serio, lk);
666
667 err = serio_open (serio, drv);
668 if (err) {
669 serio_set_drvdata (serio, NULL);
670 kfree (lk);
671 return err;
672 }
673
674 sprintf (lk->name, "DEC LK keyboard");
675 sprintf (lk->phys, "%s/input0", serio->phys);
676
677 memcpy (lk->keycode, lkkbd_keycode, sizeof (lk_keycode_t) * LK_NUM_KEYCODES);
678 for (i = 0; i < LK_NUM_KEYCODES; i++)
679 set_bit (lk->keycode[i], lk->dev.keybit);
680
681 lk->dev.name = lk->name;
682 lk->dev.phys = lk->phys;
683 lk->dev.id.bustype = BUS_RS232;
684 lk->dev.id.vendor = SERIO_LKKBD;
685 lk->dev.id.product = 0;
686 lk->dev.id.version = 0x0100;
687 lk->dev.dev = &serio->dev;
688
689 input_register_device (&lk->dev);
690
691 printk (KERN_INFO "input: %s on %s, initiating reset\n", lk->name, serio->phys);
692 lk->serio->write (lk->serio, LK_CMD_POWERCYCLE_RESET);
693
694 return 0;
695 }
696
697 /*
698 * lkkbd_disconnect() unregisters and closes behind us.
699 */
700 static void
701 lkkbd_disconnect (struct serio *serio)
702 {
703 struct lkkbd *lk = serio_get_drvdata (serio);
704
705 input_unregister_device (&lk->dev);
706 serio_close (serio);
707 serio_set_drvdata (serio, NULL);
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
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