Console keyboard events and accessibility
[linux-2.6.git] / drivers / char / keyboard.c
1 /*
2  * linux/drivers/char/keyboard.c
3  *
4  * Written for linux by Johan Myreen as a translation from
5  * the assembly version by Linus (with diacriticals added)
6  *
7  * Some additional features added by Christoph Niemann (ChN), March 1993
8  *
9  * Loadable keymaps by Risto Kankkunen, May 1993
10  *
11  * Diacriticals redone & other small changes, aeb@cwi.nl, June 1993
12  * Added decr/incr_console, dynamic keymaps, Unicode support,
13  * dynamic function/string keys, led setting,  Sept 1994
14  * `Sticky' modifier keys, 951006.
15  *
16  * 11-11-96: SAK should now work in the raw mode (Martin Mares)
17  *
18  * Modified to provide 'generic' keyboard support by Hamish Macdonald
19  * Merge with the m68k keyboard driver and split-off of the PC low-level
20  * parts by Geert Uytterhoeven, May 1997
21  *
22  * 27-05-97: Added support for the Magic SysRq Key (Martin Mares)
23  * 30-07-98: Dead keys redone, aeb@cwi.nl.
24  * 21-08-02: Converted to input API, major cleanup. (Vojtech Pavlik)
25  */
26
27 #include <linux/consolemap.h>
28 #include <linux/module.h>
29 #include <linux/sched.h>
30 #include <linux/tty.h>
31 #include <linux/tty_flip.h>
32 #include <linux/mm.h>
33 #include <linux/string.h>
34 #include <linux/init.h>
35 #include <linux/slab.h>
36 #include <linux/irq.h>
37
38 #include <linux/kbd_kern.h>
39 #include <linux/kbd_diacr.h>
40 #include <linux/vt_kern.h>
41 #include <linux/consolemap.h>
42 #include <linux/sysrq.h>
43 #include <linux/input.h>
44 #include <linux/reboot.h>
45 #include <linux/notifier.h>
46
47 extern void ctrl_alt_del(void);
48
49 /*
50  * Exported functions/variables
51  */
52
53 #define KBD_DEFMODE ((1 << VC_REPEAT) | (1 << VC_META))
54
55 /*
56  * Some laptops take the 789uiojklm,. keys as number pad when NumLock is on.
57  * This seems a good reason to start with NumLock off. On HIL keyboards
58  * of PARISC machines however there is no NumLock key and everyone expects the keypad
59  * to be used for numbers.
60  */
61
62 #if defined(CONFIG_PARISC) && (defined(CONFIG_KEYBOARD_HIL) || defined(CONFIG_KEYBOARD_HIL_OLD))
63 #define KBD_DEFLEDS (1 << VC_NUMLOCK)
64 #else
65 #define KBD_DEFLEDS 0
66 #endif
67
68 #define KBD_DEFLOCK 0
69
70 void compute_shiftstate(void);
71
72 /*
73  * Handler Tables.
74  */
75
76 #define K_HANDLERS\
77         k_self,         k_fn,           k_spec,         k_pad,\
78         k_dead,         k_cons,         k_cur,          k_shift,\
79         k_meta,         k_ascii,        k_lock,         k_lowercase,\
80         k_slock,        k_dead2,        k_brl,          k_ignore
81
82 typedef void (k_handler_fn)(struct vc_data *vc, unsigned char value,
83                             char up_flag);
84 static k_handler_fn K_HANDLERS;
85 k_handler_fn *k_handler[16] = { K_HANDLERS };
86 EXPORT_SYMBOL_GPL(k_handler);
87
88 #define FN_HANDLERS\
89         fn_null,        fn_enter,       fn_show_ptregs, fn_show_mem,\
90         fn_show_state,  fn_send_intr,   fn_lastcons,    fn_caps_toggle,\
91         fn_num,         fn_hold,        fn_scroll_forw, fn_scroll_back,\
92         fn_boot_it,     fn_caps_on,     fn_compose,     fn_SAK,\
93         fn_dec_console, fn_inc_console, fn_spawn_con,   fn_bare_num
94
95 typedef void (fn_handler_fn)(struct vc_data *vc);
96 static fn_handler_fn FN_HANDLERS;
97 static fn_handler_fn *fn_handler[] = { FN_HANDLERS };
98
99 /*
100  * Variables exported for vt_ioctl.c
101  */
102
103 /* maximum values each key_handler can handle */
104 const int max_vals[] = {
105         255, ARRAY_SIZE(func_table) - 1, ARRAY_SIZE(fn_handler) - 1, NR_PAD - 1,
106         NR_DEAD - 1, 255, 3, NR_SHIFT - 1, 255, NR_ASCII - 1, NR_LOCK - 1,
107         255, NR_LOCK - 1, 255, NR_BRL - 1
108 };
109
110 const int NR_TYPES = ARRAY_SIZE(max_vals);
111
112 struct kbd_struct kbd_table[MAX_NR_CONSOLES];
113 static struct kbd_struct *kbd = kbd_table;
114
115 struct vt_spawn_console vt_spawn_con = {
116         .lock = __SPIN_LOCK_UNLOCKED(vt_spawn_con.lock),
117         .pid  = NULL,
118         .sig  = 0,
119 };
120
121 /*
122  * Variables exported for vt.c
123  */
124
125 int shift_state = 0;
126
127 /*
128  * Internal Data.
129  */
130
131 static struct input_handler kbd_handler;
132 static unsigned long key_down[NBITS(KEY_MAX)];          /* keyboard key bitmap */
133 static unsigned char shift_down[NR_SHIFT];              /* shift state counters.. */
134 static int dead_key_next;
135 static int npadch = -1;                                 /* -1 or number assembled on pad */
136 static unsigned int diacr;
137 static char rep;                                        /* flag telling character repeat */
138
139 static unsigned char ledstate = 0xff;                   /* undefined */
140 static unsigned char ledioctl;
141
142 static struct ledptr {
143         unsigned int *addr;
144         unsigned int mask;
145         unsigned char valid:1;
146 } ledptrs[3];
147
148 /* Simple translation table for the SysRq keys */
149
150 #ifdef CONFIG_MAGIC_SYSRQ
151 unsigned char kbd_sysrq_xlate[KEY_MAX + 1] =
152         "\000\0331234567890-=\177\t"                    /* 0x00 - 0x0f */
153         "qwertyuiop[]\r\000as"                          /* 0x10 - 0x1f */
154         "dfghjkl;'`\000\\zxcv"                          /* 0x20 - 0x2f */
155         "bnm,./\000*\000 \000\201\202\203\204\205"      /* 0x30 - 0x3f */
156         "\206\207\210\211\212\000\000789-456+1"         /* 0x40 - 0x4f */
157         "230\177\000\000\213\214\000\000\000\000\000\000\000\000\000\000" /* 0x50 - 0x5f */
158         "\r\000/";                                      /* 0x60 - 0x6f */
159 static int sysrq_down;
160 static int sysrq_alt_use;
161 #endif
162 static int sysrq_alt;
163
164 /*
165  * Notifier list for console keyboard events
166  */
167 static ATOMIC_NOTIFIER_HEAD(keyboard_notifier_list);
168
169 int register_keyboard_notifier(struct notifier_block *nb)
170 {
171         return atomic_notifier_chain_register(&keyboard_notifier_list, nb);
172 }
173 EXPORT_SYMBOL_GPL(register_keyboard_notifier);
174
175 int unregister_keyboard_notifier(struct notifier_block *nb)
176 {
177         return atomic_notifier_chain_unregister(&keyboard_notifier_list, nb);
178 }
179 EXPORT_SYMBOL_GPL(unregister_keyboard_notifier);
180
181 /*
182  * Translation of scancodes to keycodes. We set them on only the first
183  * keyboard in the list that accepts the scancode and keycode.
184  * Explanation for not choosing the first attached keyboard anymore:
185  *  USB keyboards for example have two event devices: one for all "normal"
186  *  keys and one for extra function keys (like "volume up", "make coffee",
187  *  etc.). So this means that scancodes for the extra function keys won't
188  *  be valid for the first event device, but will be for the second.
189  */
190 int getkeycode(unsigned int scancode)
191 {
192         struct input_handle *handle;
193         int keycode;
194         int error = -ENODEV;
195
196         list_for_each_entry(handle, &kbd_handler.h_list, h_node) {
197                 error = handle->dev->getkeycode(handle->dev, scancode, &keycode);
198                 if (!error)
199                         return keycode;
200         }
201
202         return error;
203 }
204
205 int setkeycode(unsigned int scancode, unsigned int keycode)
206 {
207         struct input_handle *handle;
208         int error = -ENODEV;
209
210         list_for_each_entry(handle, &kbd_handler.h_list, h_node) {
211                 error = handle->dev->setkeycode(handle->dev, scancode, keycode);
212                 if (!error)
213                         break;
214         }
215
216         return error;
217 }
218
219 /*
220  * Making beeps and bells.
221  */
222 static void kd_nosound(unsigned long ignored)
223 {
224         struct input_handle *handle;
225
226         list_for_each_entry(handle, &kbd_handler.h_list, h_node) {
227                 if (test_bit(EV_SND, handle->dev->evbit)) {
228                         if (test_bit(SND_TONE, handle->dev->sndbit))
229                                 input_inject_event(handle, EV_SND, SND_TONE, 0);
230                         if (test_bit(SND_BELL, handle->dev->sndbit))
231                                 input_inject_event(handle, EV_SND, SND_BELL, 0);
232                 }
233         }
234 }
235
236 static DEFINE_TIMER(kd_mksound_timer, kd_nosound, 0, 0);
237
238 void kd_mksound(unsigned int hz, unsigned int ticks)
239 {
240         struct list_head *node;
241
242         del_timer(&kd_mksound_timer);
243
244         if (hz) {
245                 list_for_each_prev(node, &kbd_handler.h_list) {
246                         struct input_handle *handle = to_handle_h(node);
247                         if (test_bit(EV_SND, handle->dev->evbit)) {
248                                 if (test_bit(SND_TONE, handle->dev->sndbit)) {
249                                         input_inject_event(handle, EV_SND, SND_TONE, hz);
250                                         break;
251                                 }
252                                 if (test_bit(SND_BELL, handle->dev->sndbit)) {
253                                         input_inject_event(handle, EV_SND, SND_BELL, 1);
254                                         break;
255                                 }
256                         }
257                 }
258                 if (ticks)
259                         mod_timer(&kd_mksound_timer, jiffies + ticks);
260         } else
261                 kd_nosound(0);
262 }
263
264 /*
265  * Setting the keyboard rate.
266  */
267
268 int kbd_rate(struct kbd_repeat *rep)
269 {
270         struct list_head *node;
271         unsigned int d = 0;
272         unsigned int p = 0;
273
274         list_for_each(node, &kbd_handler.h_list) {
275                 struct input_handle *handle = to_handle_h(node);
276                 struct input_dev *dev = handle->dev;
277
278                 if (test_bit(EV_REP, dev->evbit)) {
279                         if (rep->delay > 0)
280                                 input_inject_event(handle, EV_REP, REP_DELAY, rep->delay);
281                         if (rep->period > 0)
282                                 input_inject_event(handle, EV_REP, REP_PERIOD, rep->period);
283                         d = dev->rep[REP_DELAY];
284                         p = dev->rep[REP_PERIOD];
285                 }
286         }
287         rep->delay  = d;
288         rep->period = p;
289         return 0;
290 }
291
292 /*
293  * Helper Functions.
294  */
295 static void put_queue(struct vc_data *vc, int ch)
296 {
297         struct tty_struct *tty = vc->vc_tty;
298
299         if (tty) {
300                 tty_insert_flip_char(tty, ch, 0);
301                 con_schedule_flip(tty);
302         }
303 }
304
305 static void puts_queue(struct vc_data *vc, char *cp)
306 {
307         struct tty_struct *tty = vc->vc_tty;
308
309         if (!tty)
310                 return;
311
312         while (*cp) {
313                 tty_insert_flip_char(tty, *cp, 0);
314                 cp++;
315         }
316         con_schedule_flip(tty);
317 }
318
319 static void applkey(struct vc_data *vc, int key, char mode)
320 {
321         static char buf[] = { 0x1b, 'O', 0x00, 0x00 };
322
323         buf[1] = (mode ? 'O' : '[');
324         buf[2] = key;
325         puts_queue(vc, buf);
326 }
327
328 /*
329  * Many other routines do put_queue, but I think either
330  * they produce ASCII, or they produce some user-assigned
331  * string, and in both cases we might assume that it is
332  * in utf-8 already.
333  */
334 static void to_utf8(struct vc_data *vc, uint c)
335 {
336         if (c < 0x80)
337                 /*  0******* */
338                 put_queue(vc, c);
339         else if (c < 0x800) {
340                 /* 110***** 10****** */
341                 put_queue(vc, 0xc0 | (c >> 6));
342                 put_queue(vc, 0x80 | (c & 0x3f));
343         } else if (c < 0x10000) {
344                 if (c >= 0xD800 && c < 0xE000)
345                         return;
346                 if (c == 0xFFFF)
347                         return;
348                 /* 1110**** 10****** 10****** */
349                 put_queue(vc, 0xe0 | (c >> 12));
350                 put_queue(vc, 0x80 | ((c >> 6) & 0x3f));
351                 put_queue(vc, 0x80 | (c & 0x3f));
352         } else if (c < 0x110000) {
353                 /* 11110*** 10****** 10****** 10****** */
354                 put_queue(vc, 0xf0 | (c >> 18));
355                 put_queue(vc, 0x80 | ((c >> 12) & 0x3f));
356                 put_queue(vc, 0x80 | ((c >> 6) & 0x3f));
357                 put_queue(vc, 0x80 | (c & 0x3f));
358         }
359 }
360
361 /*
362  * Called after returning from RAW mode or when changing consoles - recompute
363  * shift_down[] and shift_state from key_down[] maybe called when keymap is
364  * undefined, so that shiftkey release is seen
365  */
366 void compute_shiftstate(void)
367 {
368         unsigned int i, j, k, sym, val;
369
370         shift_state = 0;
371         memset(shift_down, 0, sizeof(shift_down));
372
373         for (i = 0; i < ARRAY_SIZE(key_down); i++) {
374
375                 if (!key_down[i])
376                         continue;
377
378                 k = i * BITS_PER_LONG;
379
380                 for (j = 0; j < BITS_PER_LONG; j++, k++) {
381
382                         if (!test_bit(k, key_down))
383                                 continue;
384
385                         sym = U(key_maps[0][k]);
386                         if (KTYP(sym) != KT_SHIFT && KTYP(sym) != KT_SLOCK)
387                                 continue;
388
389                         val = KVAL(sym);
390                         if (val == KVAL(K_CAPSSHIFT))
391                                 val = KVAL(K_SHIFT);
392
393                         shift_down[val]++;
394                         shift_state |= (1 << val);
395                 }
396         }
397 }
398
399 /*
400  * We have a combining character DIACR here, followed by the character CH.
401  * If the combination occurs in the table, return the corresponding value.
402  * Otherwise, if CH is a space or equals DIACR, return DIACR.
403  * Otherwise, conclude that DIACR was not combining after all,
404  * queue it and return CH.
405  */
406 static unsigned int handle_diacr(struct vc_data *vc, unsigned int ch)
407 {
408         unsigned int d = diacr;
409         unsigned int i;
410
411         diacr = 0;
412
413         if ((d & ~0xff) == BRL_UC_ROW) {
414                 if ((ch & ~0xff) == BRL_UC_ROW)
415                         return d | ch;
416         } else {
417                 for (i = 0; i < accent_table_size; i++)
418                         if (accent_table[i].diacr == d && accent_table[i].base == ch)
419                                 return accent_table[i].result;
420         }
421
422         if (ch == ' ' || ch == (BRL_UC_ROW|0) || ch == d)
423                 return d;
424
425         if (kbd->kbdmode == VC_UNICODE)
426                 to_utf8(vc, d);
427         else {
428                 int c = conv_uni_to_8bit(d);
429                 if (c != -1)
430                         put_queue(vc, c);
431         }
432
433         return ch;
434 }
435
436 /*
437  * Special function handlers
438  */
439 static void fn_enter(struct vc_data *vc)
440 {
441         if (diacr) {
442                 if (kbd->kbdmode == VC_UNICODE)
443                         to_utf8(vc, diacr);
444                 else {
445                         int c = conv_uni_to_8bit(diacr);
446                         if (c != -1)
447                                 put_queue(vc, c);
448                 }
449                 diacr = 0;
450         }
451         put_queue(vc, 13);
452         if (vc_kbd_mode(kbd, VC_CRLF))
453                 put_queue(vc, 10);
454 }
455
456 static void fn_caps_toggle(struct vc_data *vc)
457 {
458         if (rep)
459                 return;
460         chg_vc_kbd_led(kbd, VC_CAPSLOCK);
461 }
462
463 static void fn_caps_on(struct vc_data *vc)
464 {
465         if (rep)
466                 return;
467         set_vc_kbd_led(kbd, VC_CAPSLOCK);
468 }
469
470 static void fn_show_ptregs(struct vc_data *vc)
471 {
472         struct pt_regs *regs = get_irq_regs();
473         if (regs)
474                 show_regs(regs);
475 }
476
477 static void fn_hold(struct vc_data *vc)
478 {
479         struct tty_struct *tty = vc->vc_tty;
480
481         if (rep || !tty)
482                 return;
483
484         /*
485          * Note: SCROLLOCK will be set (cleared) by stop_tty (start_tty);
486          * these routines are also activated by ^S/^Q.
487          * (And SCROLLOCK can also be set by the ioctl KDSKBLED.)
488          */
489         if (tty->stopped)
490                 start_tty(tty);
491         else
492                 stop_tty(tty);
493 }
494
495 static void fn_num(struct vc_data *vc)
496 {
497         if (vc_kbd_mode(kbd,VC_APPLIC))
498                 applkey(vc, 'P', 1);
499         else
500                 fn_bare_num(vc);
501 }
502
503 /*
504  * Bind this to Shift-NumLock if you work in application keypad mode
505  * but want to be able to change the NumLock flag.
506  * Bind this to NumLock if you prefer that the NumLock key always
507  * changes the NumLock flag.
508  */
509 static void fn_bare_num(struct vc_data *vc)
510 {
511         if (!rep)
512                 chg_vc_kbd_led(kbd, VC_NUMLOCK);
513 }
514
515 static void fn_lastcons(struct vc_data *vc)
516 {
517         /* switch to the last used console, ChN */
518         set_console(last_console);
519 }
520
521 static void fn_dec_console(struct vc_data *vc)
522 {
523         int i, cur = fg_console;
524
525         /* Currently switching?  Queue this next switch relative to that. */
526         if (want_console != -1)
527                 cur = want_console;
528
529         for (i = cur - 1; i != cur; i--) {
530                 if (i == -1)
531                         i = MAX_NR_CONSOLES - 1;
532                 if (vc_cons_allocated(i))
533                         break;
534         }
535         set_console(i);
536 }
537
538 static void fn_inc_console(struct vc_data *vc)
539 {
540         int i, cur = fg_console;
541
542         /* Currently switching?  Queue this next switch relative to that. */
543         if (want_console != -1)
544                 cur = want_console;
545
546         for (i = cur+1; i != cur; i++) {
547                 if (i == MAX_NR_CONSOLES)
548                         i = 0;
549                 if (vc_cons_allocated(i))
550                         break;
551         }
552         set_console(i);
553 }
554
555 static void fn_send_intr(struct vc_data *vc)
556 {
557         struct tty_struct *tty = vc->vc_tty;
558
559         if (!tty)
560                 return;
561         tty_insert_flip_char(tty, 0, TTY_BREAK);
562         con_schedule_flip(tty);
563 }
564
565 static void fn_scroll_forw(struct vc_data *vc)
566 {
567         scrollfront(vc, 0);
568 }
569
570 static void fn_scroll_back(struct vc_data *vc)
571 {
572         scrollback(vc, 0);
573 }
574
575 static void fn_show_mem(struct vc_data *vc)
576 {
577         show_mem();
578 }
579
580 static void fn_show_state(struct vc_data *vc)
581 {
582         show_state();
583 }
584
585 static void fn_boot_it(struct vc_data *vc)
586 {
587         ctrl_alt_del();
588 }
589
590 static void fn_compose(struct vc_data *vc)
591 {
592         dead_key_next = 1;
593 }
594
595 static void fn_spawn_con(struct vc_data *vc)
596 {
597         spin_lock(&vt_spawn_con.lock);
598         if (vt_spawn_con.pid)
599                 if (kill_pid(vt_spawn_con.pid, vt_spawn_con.sig, 1)) {
600                         put_pid(vt_spawn_con.pid);
601                         vt_spawn_con.pid = NULL;
602                 }
603         spin_unlock(&vt_spawn_con.lock);
604 }
605
606 static void fn_SAK(struct vc_data *vc)
607 {
608         struct work_struct *SAK_work = &vc_cons[fg_console].SAK_work;
609         schedule_work(SAK_work);
610 }
611
612 static void fn_null(struct vc_data *vc)
613 {
614         compute_shiftstate();
615 }
616
617 /*
618  * Special key handlers
619  */
620 static void k_ignore(struct vc_data *vc, unsigned char value, char up_flag)
621 {
622 }
623
624 static void k_spec(struct vc_data *vc, unsigned char value, char up_flag)
625 {
626         if (up_flag)
627                 return;
628         if (value >= ARRAY_SIZE(fn_handler))
629                 return;
630         if ((kbd->kbdmode == VC_RAW ||
631              kbd->kbdmode == VC_MEDIUMRAW) &&
632              value != KVAL(K_SAK))
633                 return;         /* SAK is allowed even in raw mode */
634         fn_handler[value](vc);
635 }
636
637 static void k_lowercase(struct vc_data *vc, unsigned char value, char up_flag)
638 {
639         printk(KERN_ERR "keyboard.c: k_lowercase was called - impossible\n");
640 }
641
642 static void k_unicode(struct vc_data *vc, unsigned int value, char up_flag)
643 {
644         if (up_flag)
645                 return;         /* no action, if this is a key release */
646
647         if (diacr)
648                 value = handle_diacr(vc, value);
649
650         if (dead_key_next) {
651                 dead_key_next = 0;
652                 diacr = value;
653                 return;
654         }
655         if (kbd->kbdmode == VC_UNICODE)
656                 to_utf8(vc, value);
657         else {
658                 int c = conv_uni_to_8bit(value);
659                 if (c != -1)
660                         put_queue(vc, c);
661         }
662 }
663
664 /*
665  * Handle dead key. Note that we now may have several
666  * dead keys modifying the same character. Very useful
667  * for Vietnamese.
668  */
669 static void k_deadunicode(struct vc_data *vc, unsigned int value, char up_flag)
670 {
671         if (up_flag)
672                 return;
673         diacr = (diacr ? handle_diacr(vc, value) : value);
674 }
675
676 static void k_self(struct vc_data *vc, unsigned char value, char up_flag)
677 {
678         unsigned int uni;
679         if (kbd->kbdmode == VC_UNICODE)
680                 uni = value;
681         else
682                 uni = conv_8bit_to_uni(value);
683         k_unicode(vc, uni, up_flag);
684 }
685
686 static void k_dead2(struct vc_data *vc, unsigned char value, char up_flag)
687 {
688         k_deadunicode(vc, value, up_flag);
689 }
690
691 /*
692  * Obsolete - for backwards compatibility only
693  */
694 static void k_dead(struct vc_data *vc, unsigned char value, char up_flag)
695 {
696         static const unsigned char ret_diacr[NR_DEAD] = {'`', '\'', '^', '~', '"', ',' };
697         value = ret_diacr[value];
698         k_deadunicode(vc, value, up_flag);
699 }
700
701 static void k_cons(struct vc_data *vc, unsigned char value, char up_flag)
702 {
703         if (up_flag)
704                 return;
705         set_console(value);
706 }
707
708 static void k_fn(struct vc_data *vc, unsigned char value, char up_flag)
709 {
710         unsigned v;
711
712         if (up_flag)
713                 return;
714         v = value;
715         if (v < ARRAY_SIZE(func_table)) {
716                 if (func_table[value])
717                         puts_queue(vc, func_table[value]);
718         } else
719                 printk(KERN_ERR "k_fn called with value=%d\n", value);
720 }
721
722 static void k_cur(struct vc_data *vc, unsigned char value, char up_flag)
723 {
724         static const char cur_chars[] = "BDCA";
725
726         if (up_flag)
727                 return;
728         applkey(vc, cur_chars[value], vc_kbd_mode(kbd, VC_CKMODE));
729 }
730
731 static void k_pad(struct vc_data *vc, unsigned char value, char up_flag)
732 {
733         static const char pad_chars[] = "0123456789+-*/\015,.?()#";
734         static const char app_map[] = "pqrstuvwxylSRQMnnmPQS";
735
736         if (up_flag)
737                 return;         /* no action, if this is a key release */
738
739         /* kludge... shift forces cursor/number keys */
740         if (vc_kbd_mode(kbd, VC_APPLIC) && !shift_down[KG_SHIFT]) {
741                 applkey(vc, app_map[value], 1);
742                 return;
743         }
744
745         if (!vc_kbd_led(kbd, VC_NUMLOCK))
746                 switch (value) {
747                         case KVAL(K_PCOMMA):
748                         case KVAL(K_PDOT):
749                                 k_fn(vc, KVAL(K_REMOVE), 0);
750                                 return;
751                         case KVAL(K_P0):
752                                 k_fn(vc, KVAL(K_INSERT), 0);
753                                 return;
754                         case KVAL(K_P1):
755                                 k_fn(vc, KVAL(K_SELECT), 0);
756                                 return;
757                         case KVAL(K_P2):
758                                 k_cur(vc, KVAL(K_DOWN), 0);
759                                 return;
760                         case KVAL(K_P3):
761                                 k_fn(vc, KVAL(K_PGDN), 0);
762                                 return;
763                         case KVAL(K_P4):
764                                 k_cur(vc, KVAL(K_LEFT), 0);
765                                 return;
766                         case KVAL(K_P6):
767                                 k_cur(vc, KVAL(K_RIGHT), 0);
768                                 return;
769                         case KVAL(K_P7):
770                                 k_fn(vc, KVAL(K_FIND), 0);
771                                 return;
772                         case KVAL(K_P8):
773                                 k_cur(vc, KVAL(K_UP), 0);
774                                 return;
775                         case KVAL(K_P9):
776                                 k_fn(vc, KVAL(K_PGUP), 0);
777                                 return;
778                         case KVAL(K_P5):
779                                 applkey(vc, 'G', vc_kbd_mode(kbd, VC_APPLIC));
780                                 return;
781                 }
782
783         put_queue(vc, pad_chars[value]);
784         if (value == KVAL(K_PENTER) && vc_kbd_mode(kbd, VC_CRLF))
785                 put_queue(vc, 10);
786 }
787
788 static void k_shift(struct vc_data *vc, unsigned char value, char up_flag)
789 {
790         int old_state = shift_state;
791
792         if (rep)
793                 return;
794         /*
795          * Mimic typewriter:
796          * a CapsShift key acts like Shift but undoes CapsLock
797          */
798         if (value == KVAL(K_CAPSSHIFT)) {
799                 value = KVAL(K_SHIFT);
800                 if (!up_flag)
801                         clr_vc_kbd_led(kbd, VC_CAPSLOCK);
802         }
803
804         if (up_flag) {
805                 /*
806                  * handle the case that two shift or control
807                  * keys are depressed simultaneously
808                  */
809                 if (shift_down[value])
810                         shift_down[value]--;
811         } else
812                 shift_down[value]++;
813
814         if (shift_down[value])
815                 shift_state |= (1 << value);
816         else
817                 shift_state &= ~(1 << value);
818
819         /* kludge */
820         if (up_flag && shift_state != old_state && npadch != -1) {
821                 if (kbd->kbdmode == VC_UNICODE)
822                         to_utf8(vc, npadch);
823                 else
824                         put_queue(vc, npadch & 0xff);
825                 npadch = -1;
826         }
827 }
828
829 static void k_meta(struct vc_data *vc, unsigned char value, char up_flag)
830 {
831         if (up_flag)
832                 return;
833
834         if (vc_kbd_mode(kbd, VC_META)) {
835                 put_queue(vc, '\033');
836                 put_queue(vc, value);
837         } else
838                 put_queue(vc, value | 0x80);
839 }
840
841 static void k_ascii(struct vc_data *vc, unsigned char value, char up_flag)
842 {
843         int base;
844
845         if (up_flag)
846                 return;
847
848         if (value < 10) {
849                 /* decimal input of code, while Alt depressed */
850                 base = 10;
851         } else {
852                 /* hexadecimal input of code, while AltGr depressed */
853                 value -= 10;
854                 base = 16;
855         }
856
857         if (npadch == -1)
858                 npadch = value;
859         else
860                 npadch = npadch * base + value;
861 }
862
863 static void k_lock(struct vc_data *vc, unsigned char value, char up_flag)
864 {
865         if (up_flag || rep)
866                 return;
867         chg_vc_kbd_lock(kbd, value);
868 }
869
870 static void k_slock(struct vc_data *vc, unsigned char value, char up_flag)
871 {
872         k_shift(vc, value, up_flag);
873         if (up_flag || rep)
874                 return;
875         chg_vc_kbd_slock(kbd, value);
876         /* try to make Alt, oops, AltGr and such work */
877         if (!key_maps[kbd->lockstate ^ kbd->slockstate]) {
878                 kbd->slockstate = 0;
879                 chg_vc_kbd_slock(kbd, value);
880         }
881 }
882
883 /* by default, 300ms interval for combination release */
884 static unsigned brl_timeout = 300;
885 MODULE_PARM_DESC(brl_timeout, "Braille keys release delay in ms (0 for commit on first key release)");
886 module_param(brl_timeout, uint, 0644);
887
888 static unsigned brl_nbchords = 1;
889 MODULE_PARM_DESC(brl_nbchords, "Number of chords that produce a braille pattern (0 for dead chords)");
890 module_param(brl_nbchords, uint, 0644);
891
892 static void k_brlcommit(struct vc_data *vc, unsigned int pattern, char up_flag)
893 {
894         static unsigned long chords;
895         static unsigned committed;
896
897         if (!brl_nbchords)
898                 k_deadunicode(vc, BRL_UC_ROW | pattern, up_flag);
899         else {
900                 committed |= pattern;
901                 chords++;
902                 if (chords == brl_nbchords) {
903                         k_unicode(vc, BRL_UC_ROW | committed, up_flag);
904                         chords = 0;
905                         committed = 0;
906                 }
907         }
908 }
909
910 static void k_brl(struct vc_data *vc, unsigned char value, char up_flag)
911 {
912         static unsigned pressed,committing;
913         static unsigned long releasestart;
914
915         if (kbd->kbdmode != VC_UNICODE) {
916                 if (!up_flag)
917                         printk("keyboard mode must be unicode for braille patterns\n");
918                 return;
919         }
920
921         if (!value) {
922                 k_unicode(vc, BRL_UC_ROW, up_flag);
923                 return;
924         }
925
926         if (value > 8)
927                 return;
928
929         if (up_flag) {
930                 if (brl_timeout) {
931                         if (!committing ||
932                             jiffies - releasestart > (brl_timeout * HZ) / 1000) {
933                                 committing = pressed;
934                                 releasestart = jiffies;
935                         }
936                         pressed &= ~(1 << (value - 1));
937                         if (!pressed) {
938                                 if (committing) {
939                                         k_brlcommit(vc, committing, 0);
940                                         committing = 0;
941                                 }
942                         }
943                 } else {
944                         if (committing) {
945                                 k_brlcommit(vc, committing, 0);
946                                 committing = 0;
947                         }
948                         pressed &= ~(1 << (value - 1));
949                 }
950         } else {
951                 pressed |= 1 << (value - 1);
952                 if (!brl_timeout)
953                         committing = pressed;
954         }
955 }
956
957 /*
958  * The leds display either (i) the status of NumLock, CapsLock, ScrollLock,
959  * or (ii) whatever pattern of lights people want to show using KDSETLED,
960  * or (iii) specified bits of specified words in kernel memory.
961  */
962 unsigned char getledstate(void)
963 {
964         return ledstate;
965 }
966
967 void setledstate(struct kbd_struct *kbd, unsigned int led)
968 {
969         if (!(led & ~7)) {
970                 ledioctl = led;
971                 kbd->ledmode = LED_SHOW_IOCTL;
972         } else
973                 kbd->ledmode = LED_SHOW_FLAGS;
974         set_leds();
975 }
976
977 static inline unsigned char getleds(void)
978 {
979         struct kbd_struct *kbd = kbd_table + fg_console;
980         unsigned char leds;
981         int i;
982
983         if (kbd->ledmode == LED_SHOW_IOCTL)
984                 return ledioctl;
985
986         leds = kbd->ledflagstate;
987
988         if (kbd->ledmode == LED_SHOW_MEM) {
989                 for (i = 0; i < 3; i++)
990                         if (ledptrs[i].valid) {
991                                 if (*ledptrs[i].addr & ledptrs[i].mask)
992                                         leds |= (1 << i);
993                                 else
994                                         leds &= ~(1 << i);
995                         }
996         }
997         return leds;
998 }
999
1000 /*
1001  * This routine is the bottom half of the keyboard interrupt
1002  * routine, and runs with all interrupts enabled. It does
1003  * console changing, led setting and copy_to_cooked, which can
1004  * take a reasonably long time.
1005  *
1006  * Aside from timing (which isn't really that important for
1007  * keyboard interrupts as they happen often), using the software
1008  * interrupt routines for this thing allows us to easily mask
1009  * this when we don't want any of the above to happen.
1010  * This allows for easy and efficient race-condition prevention
1011  * for kbd_start => input_inject_event(dev, EV_LED, ...) => ...
1012  */
1013
1014 static void kbd_bh(unsigned long dummy)
1015 {
1016         struct list_head *node;
1017         unsigned char leds = getleds();
1018
1019         if (leds != ledstate) {
1020                 list_for_each(node, &kbd_handler.h_list) {
1021                         struct input_handle *handle = to_handle_h(node);
1022                         input_inject_event(handle, EV_LED, LED_SCROLLL, !!(leds & 0x01));
1023                         input_inject_event(handle, EV_LED, LED_NUML,    !!(leds & 0x02));
1024                         input_inject_event(handle, EV_LED, LED_CAPSL,   !!(leds & 0x04));
1025                         input_inject_event(handle, EV_SYN, SYN_REPORT, 0);
1026                 }
1027         }
1028
1029         ledstate = leds;
1030 }
1031
1032 DECLARE_TASKLET_DISABLED(keyboard_tasklet, kbd_bh, 0);
1033
1034 #if defined(CONFIG_X86) || defined(CONFIG_IA64) || defined(CONFIG_ALPHA) ||\
1035     defined(CONFIG_MIPS) || defined(CONFIG_PPC) || defined(CONFIG_SPARC) ||\
1036     defined(CONFIG_PARISC) || defined(CONFIG_SUPERH) ||\
1037     (defined(CONFIG_ARM) && defined(CONFIG_KEYBOARD_ATKBD) && !defined(CONFIG_ARCH_RPC))
1038
1039 #define HW_RAW(dev) (test_bit(EV_MSC, dev->evbit) && test_bit(MSC_RAW, dev->mscbit) &&\
1040                         ((dev)->id.bustype == BUS_I8042) && ((dev)->id.vendor == 0x0001) && ((dev)->id.product == 0x0001))
1041
1042 static const unsigned short x86_keycodes[256] =
1043         { 0,  1,  2,  3,  4,  5,  6,  7,  8,  9, 10, 11, 12, 13, 14, 15,
1044          16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31,
1045          32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47,
1046          48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63,
1047          64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79,
1048          80, 81, 82, 83, 84,118, 86, 87, 88,115,120,119,121,112,123, 92,
1049         284,285,309,  0,312, 91,327,328,329,331,333,335,336,337,338,339,
1050         367,288,302,304,350, 89,334,326,267,126,268,269,125,347,348,349,
1051         360,261,262,263,268,376,100,101,321,316,373,286,289,102,351,355,
1052         103,104,105,275,287,279,258,106,274,107,294,364,358,363,362,361,
1053         291,108,381,281,290,272,292,305,280, 99,112,257,306,359,113,114,
1054         264,117,271,374,379,265,266, 93, 94, 95, 85,259,375,260, 90,116,
1055         377,109,111,277,278,282,283,295,296,297,299,300,301,293,303,307,
1056         308,310,313,314,315,317,318,319,320,357,322,323,324,325,276,330,
1057         332,340,365,342,343,344,345,346,356,270,341,368,369,370,371,372 };
1058
1059 #ifdef CONFIG_SPARC
1060 static int sparc_l1_a_state = 0;
1061 extern void sun_do_break(void);
1062 #endif
1063
1064 static int emulate_raw(struct vc_data *vc, unsigned int keycode,
1065                        unsigned char up_flag)
1066 {
1067         int code;
1068
1069         switch (keycode) {
1070                 case KEY_PAUSE:
1071                         put_queue(vc, 0xe1);
1072                         put_queue(vc, 0x1d | up_flag);
1073                         put_queue(vc, 0x45 | up_flag);
1074                         break;
1075
1076                 case KEY_HANGEUL:
1077                         if (!up_flag)
1078                                 put_queue(vc, 0xf2);
1079                         break;
1080
1081                 case KEY_HANJA:
1082                         if (!up_flag)
1083                                 put_queue(vc, 0xf1);
1084                         break;
1085
1086                 case KEY_SYSRQ:
1087                         /*
1088                          * Real AT keyboards (that's what we're trying
1089                          * to emulate here emit 0xe0 0x2a 0xe0 0x37 when
1090                          * pressing PrtSc/SysRq alone, but simply 0x54
1091                          * when pressing Alt+PrtSc/SysRq.
1092                          */
1093                         if (sysrq_alt) {
1094                                 put_queue(vc, 0x54 | up_flag);
1095                         } else {
1096                                 put_queue(vc, 0xe0);
1097                                 put_queue(vc, 0x2a | up_flag);
1098                                 put_queue(vc, 0xe0);
1099                                 put_queue(vc, 0x37 | up_flag);
1100                         }
1101                         break;
1102
1103                 default:
1104                         if (keycode > 255)
1105                                 return -1;
1106
1107                         code = x86_keycodes[keycode];
1108                         if (!code)
1109                                 return -1;
1110
1111                         if (code & 0x100)
1112                                 put_queue(vc, 0xe0);
1113                         put_queue(vc, (code & 0x7f) | up_flag);
1114
1115                         break;
1116         }
1117
1118         return 0;
1119 }
1120
1121 #else
1122
1123 #define HW_RAW(dev)     0
1124
1125 #warning "Cannot generate rawmode keyboard for your architecture yet."
1126
1127 static int emulate_raw(struct vc_data *vc, unsigned int keycode, unsigned char up_flag)
1128 {
1129         if (keycode > 127)
1130                 return -1;
1131
1132         put_queue(vc, keycode | up_flag);
1133         return 0;
1134 }
1135 #endif
1136
1137 static void kbd_rawcode(unsigned char data)
1138 {
1139         struct vc_data *vc = vc_cons[fg_console].d;
1140         kbd = kbd_table + fg_console;
1141         if (kbd->kbdmode == VC_RAW)
1142                 put_queue(vc, data);
1143 }
1144
1145 static void kbd_keycode(unsigned int keycode, int down, int hw_raw)
1146 {
1147         struct vc_data *vc = vc_cons[fg_console].d;
1148         unsigned short keysym, *key_map;
1149         unsigned char type, raw_mode;
1150         struct tty_struct *tty;
1151         int shift_final;
1152         struct keyboard_notifier_param param = { .vc = vc, .value = keycode, .down = down };
1153
1154         tty = vc->vc_tty;
1155
1156         if (tty && (!tty->driver_data)) {
1157                 /* No driver data? Strange. Okay we fix it then. */
1158                 tty->driver_data = vc;
1159         }
1160
1161         kbd = kbd_table + fg_console;
1162
1163         if (keycode == KEY_LEFTALT || keycode == KEY_RIGHTALT)
1164                 sysrq_alt = down ? keycode : 0;
1165 #ifdef CONFIG_SPARC
1166         if (keycode == KEY_STOP)
1167                 sparc_l1_a_state = down;
1168 #endif
1169
1170         rep = (down == 2);
1171
1172 #ifdef CONFIG_MAC_EMUMOUSEBTN
1173         if (mac_hid_mouse_emulate_buttons(1, keycode, down))
1174                 return;
1175 #endif /* CONFIG_MAC_EMUMOUSEBTN */
1176
1177         if ((raw_mode = (kbd->kbdmode == VC_RAW)) && !hw_raw)
1178                 if (emulate_raw(vc, keycode, !down << 7))
1179                         if (keycode < BTN_MISC && printk_ratelimit())
1180                                 printk(KERN_WARNING "keyboard.c: can't emulate rawmode for keycode %d\n", keycode);
1181
1182 #ifdef CONFIG_MAGIC_SYSRQ              /* Handle the SysRq Hack */
1183         if (keycode == KEY_SYSRQ && (sysrq_down || (down == 1 && sysrq_alt))) {
1184                 if (!sysrq_down) {
1185                         sysrq_down = down;
1186                         sysrq_alt_use = sysrq_alt;
1187                 }
1188                 return;
1189         }
1190         if (sysrq_down && !down && keycode == sysrq_alt_use)
1191                 sysrq_down = 0;
1192         if (sysrq_down && down && !rep) {
1193                 handle_sysrq(kbd_sysrq_xlate[keycode], tty);
1194                 return;
1195         }
1196 #endif
1197 #ifdef CONFIG_SPARC
1198         if (keycode == KEY_A && sparc_l1_a_state) {
1199                 sparc_l1_a_state = 0;
1200                 sun_do_break();
1201         }
1202 #endif
1203
1204         if (kbd->kbdmode == VC_MEDIUMRAW) {
1205                 /*
1206                  * This is extended medium raw mode, with keys above 127
1207                  * encoded as 0, high 7 bits, low 7 bits, with the 0 bearing
1208                  * the 'up' flag if needed. 0 is reserved, so this shouldn't
1209                  * interfere with anything else. The two bytes after 0 will
1210                  * always have the up flag set not to interfere with older
1211                  * applications. This allows for 16384 different keycodes,
1212                  * which should be enough.
1213                  */
1214                 if (keycode < 128) {
1215                         put_queue(vc, keycode | (!down << 7));
1216                 } else {
1217                         put_queue(vc, !down << 7);
1218                         put_queue(vc, (keycode >> 7) | 0x80);
1219                         put_queue(vc, keycode | 0x80);
1220                 }
1221                 raw_mode = 1;
1222         }
1223
1224         if (down)
1225                 set_bit(keycode, key_down);
1226         else
1227                 clear_bit(keycode, key_down);
1228
1229         if (rep &&
1230             (!vc_kbd_mode(kbd, VC_REPEAT) ||
1231              (tty && !L_ECHO(tty) && tty->driver->chars_in_buffer(tty)))) {
1232                 /*
1233                  * Don't repeat a key if the input buffers are not empty and the
1234                  * characters get aren't echoed locally. This makes key repeat
1235                  * usable with slow applications and under heavy loads.
1236                  */
1237                 return;
1238         }
1239
1240         param.shift = shift_final = (shift_state | kbd->slockstate) ^ kbd->lockstate;
1241         key_map = key_maps[shift_final];
1242
1243         if (atomic_notifier_call_chain(&keyboard_notifier_list, KBD_KEYCODE, &param) == NOTIFY_STOP || !key_map) {
1244                 atomic_notifier_call_chain(&keyboard_notifier_list, KBD_UNBOUND_KEYCODE, &param);
1245                 compute_shiftstate();
1246                 kbd->slockstate = 0;
1247                 return;
1248         }
1249
1250         if (keycode > NR_KEYS)
1251                 if (keycode >= KEY_BRL_DOT1 && keycode <= KEY_BRL_DOT8)
1252                         keysym = K(KT_BRL, keycode - KEY_BRL_DOT1 + 1);
1253                 else
1254                         return;
1255         else
1256                 keysym = key_map[keycode];
1257
1258         type = KTYP(keysym);
1259
1260         if (type < 0xf0) {
1261                 param.value = keysym;
1262                 if (atomic_notifier_call_chain(&keyboard_notifier_list, KBD_UNICODE, &param) == NOTIFY_STOP)
1263                         return;
1264                 if (down && !raw_mode)
1265                         to_utf8(vc, keysym);
1266                 return;
1267         }
1268
1269         type -= 0xf0;
1270
1271         if (type == KT_LETTER) {
1272                 type = KT_LATIN;
1273                 if (vc_kbd_led(kbd, VC_CAPSLOCK)) {
1274                         key_map = key_maps[shift_final ^ (1 << KG_SHIFT)];
1275                         if (key_map)
1276                                 keysym = key_map[keycode];
1277                 }
1278         }
1279         param.value = keysym;
1280
1281         if (atomic_notifier_call_chain(&keyboard_notifier_list, KBD_KEYSYM, &param) == NOTIFY_STOP)
1282                 return;
1283
1284         if (raw_mode && type != KT_SPEC && type != KT_SHIFT)
1285                 return;
1286
1287         (*k_handler[type])(vc, keysym & 0xff, !down);
1288
1289         atomic_notifier_call_chain(&keyboard_notifier_list, KBD_POST_KEYSYM, &param);
1290
1291         if (type != KT_SLOCK)
1292                 kbd->slockstate = 0;
1293 }
1294
1295 static void kbd_event(struct input_handle *handle, unsigned int event_type,
1296                       unsigned int event_code, int value)
1297 {
1298         if (event_type == EV_MSC && event_code == MSC_RAW && HW_RAW(handle->dev))
1299                 kbd_rawcode(value);
1300         if (event_type == EV_KEY)
1301                 kbd_keycode(event_code, value, HW_RAW(handle->dev));
1302         tasklet_schedule(&keyboard_tasklet);
1303         do_poke_blanked_console = 1;
1304         schedule_console_callback();
1305 }
1306
1307 /*
1308  * When a keyboard (or other input device) is found, the kbd_connect
1309  * function is called. The function then looks at the device, and if it
1310  * likes it, it can open it and get events from it. In this (kbd_connect)
1311  * function, we should decide which VT to bind that keyboard to initially.
1312  */
1313 static int kbd_connect(struct input_handler *handler, struct input_dev *dev,
1314                         const struct input_device_id *id)
1315 {
1316         struct input_handle *handle;
1317         int error;
1318         int i;
1319
1320         for (i = KEY_RESERVED; i < BTN_MISC; i++)
1321                 if (test_bit(i, dev->keybit))
1322                         break;
1323
1324         if (i == BTN_MISC && !test_bit(EV_SND, dev->evbit))
1325                 return -ENODEV;
1326
1327         handle = kzalloc(sizeof(struct input_handle), GFP_KERNEL);
1328         if (!handle)
1329                 return -ENOMEM;
1330
1331         handle->dev = dev;
1332         handle->handler = handler;
1333         handle->name = "kbd";
1334
1335         error = input_register_handle(handle);
1336         if (error)
1337                 goto err_free_handle;
1338
1339         error = input_open_device(handle);
1340         if (error)
1341                 goto err_unregister_handle;
1342
1343         return 0;
1344
1345  err_unregister_handle:
1346         input_unregister_handle(handle);
1347  err_free_handle:
1348         kfree(handle);
1349         return error;
1350 }
1351
1352 static void kbd_disconnect(struct input_handle *handle)
1353 {
1354         input_close_device(handle);
1355         input_unregister_handle(handle);
1356         kfree(handle);
1357 }
1358
1359 /*
1360  * Start keyboard handler on the new keyboard by refreshing LED state to
1361  * match the rest of the system.
1362  */
1363 static void kbd_start(struct input_handle *handle)
1364 {
1365         unsigned char leds = ledstate;
1366
1367         tasklet_disable(&keyboard_tasklet);
1368         if (leds != 0xff) {
1369                 input_inject_event(handle, EV_LED, LED_SCROLLL, !!(leds & 0x01));
1370                 input_inject_event(handle, EV_LED, LED_NUML,    !!(leds & 0x02));
1371                 input_inject_event(handle, EV_LED, LED_CAPSL,   !!(leds & 0x04));
1372                 input_inject_event(handle, EV_SYN, SYN_REPORT, 0);
1373         }
1374         tasklet_enable(&keyboard_tasklet);
1375 }
1376
1377 static const struct input_device_id kbd_ids[] = {
1378         {
1379                 .flags = INPUT_DEVICE_ID_MATCH_EVBIT,
1380                 .evbit = { BIT(EV_KEY) },
1381         },
1382
1383         {
1384                 .flags = INPUT_DEVICE_ID_MATCH_EVBIT,
1385                 .evbit = { BIT(EV_SND) },
1386         },
1387
1388         { },    /* Terminating entry */
1389 };
1390
1391 MODULE_DEVICE_TABLE(input, kbd_ids);
1392
1393 static struct input_handler kbd_handler = {
1394         .event          = kbd_event,
1395         .connect        = kbd_connect,
1396         .disconnect     = kbd_disconnect,
1397         .start          = kbd_start,
1398         .name           = "kbd",
1399         .id_table       = kbd_ids,
1400 };
1401
1402 int __init kbd_init(void)
1403 {
1404         int i;
1405         int error;
1406
1407         for (i = 0; i < MAX_NR_CONSOLES; i++) {
1408                 kbd_table[i].ledflagstate = KBD_DEFLEDS;
1409                 kbd_table[i].default_ledflagstate = KBD_DEFLEDS;
1410                 kbd_table[i].ledmode = LED_SHOW_FLAGS;
1411                 kbd_table[i].lockstate = KBD_DEFLOCK;
1412                 kbd_table[i].slockstate = 0;
1413                 kbd_table[i].modeflags = KBD_DEFMODE;
1414                 kbd_table[i].kbdmode = default_utf8 ? VC_UNICODE : VC_XLATE;
1415         }
1416
1417         error = input_register_handler(&kbd_handler);
1418         if (error)
1419                 return error;
1420
1421         tasklet_enable(&keyboard_tasklet);
1422         tasklet_schedule(&keyboard_tasklet);
1423
1424         return 0;
1425 }