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[/] [test_project/] [trunk/] [linux_sd_driver/] [drivers/] [input/] [keyboard/] [lkkbd.c] - Blame information for rev 62

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1 62 marcus.erl
/*
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
 
76
MODULE_AUTHOR ("Jan-Benedict Glaw <jbglaw@lug-owl.de>");
77
MODULE_DESCRIPTION (DRIVER_DESC);
78
MODULE_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
 */
88
static int bell_volume = 100; /* % */
89
module_param (bell_volume, int, 0);
90
MODULE_PARM_DESC (bell_volume, "Bell volume (in %). default is 100%");
91
 
92
static int keyclick_volume = 100; /* % */
93
module_param (keyclick_volume, int, 0);
94
MODULE_PARM_DESC (keyclick_volume, "Keyclick volume (in %), default is 100%");
95
 
96
static int ctrlclick_volume = 100; /* % */
97
module_param (ctrlclick_volume, int, 0);
98
MODULE_PARM_DESC (ctrlclick_volume, "Ctrlclick volume (in %), default is 100%");
99
 
100
static int lk201_compose_is_alt;
101
module_param (lk201_compose_is_alt, int, 0);
102
MODULE_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
156
typedef u_int16_t lk_keycode_t;
157
 
158
 
159
 
160
static 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
 */
281
struct 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
 */
300
static 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
 
319
static unsigned char *
320
response_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
 */
335
static unsigned char
336
volume_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
 
367
static void
368
lkkbd_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
 */
450
static irqreturn_t
451
lkkbd_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
 */
514
static int
515
lkkbd_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
 */
574
static void
575
lkkbd_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
 */
637
static int
638
lkkbd_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
 */
715
static void
716
lkkbd_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
 
728
static 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
 
738
MODULE_DEVICE_TABLE(serio, lkkbd_serio_ids);
739
 
740
static 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
 */
754
static int __init
755
lkkbd_init (void)
756
{
757
        return serio_register_driver(&lkkbd_drv);
758
}
759
 
760
static void __exit
761
lkkbd_exit (void)
762
{
763
        serio_unregister_driver(&lkkbd_drv);
764
}
765
 
766
module_init (lkkbd_init);
767
module_exit (lkkbd_exit);
768
 

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