2 * linux/drivers/char/keyboard.c
4 * Written for linux by Johan Myreen as a translation from
5 * the assembly version by Linus (with diacriticals added)
7 * Some additional features added by Christoph Niemann (ChN), March 1993
9 * Loadable keymaps by Risto Kankkunen, May 1993
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.
16 * 11-11-96: SAK should now work in the raw mode (Martin Mares)
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
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)
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>
33 #include <linux/string.h>
34 #include <linux/init.h>
35 #include <linux/slab.h>
36 #include <linux/irq.h>
38 #include <linux/kbd_kern.h>
39 #include <linux/kbd_diacr.h>
40 #include <linux/vt_kern.h>
41 #include <linux/sysrq.h>
42 #include <linux/input.h>
43 #include <linux/reboot.h>
44 #include <linux/notifier.h>
45 #include <linux/jiffies.h>
47 extern void ctrl_alt_del(void);
50 * Exported functions/variables
53 #define KBD_DEFMODE ((1 << VC_REPEAT) | (1 << VC_META))
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.
62 #if defined(CONFIG_PARISC) && (defined(CONFIG_KEYBOARD_HIL) || defined(CONFIG_KEYBOARD_HIL_OLD))
63 #define KBD_DEFLEDS (1 << VC_NUMLOCK)
70 void compute_shiftstate(void);
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
82 typedef void (k_handler_fn)(struct vc_data *vc, unsigned char value,
84 static k_handler_fn K_HANDLERS;
85 k_handler_fn *k_handler[16] = { K_HANDLERS };
86 EXPORT_SYMBOL_GPL(k_handler);
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
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 };
100 * Variables exported for vt_ioctl.c
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
110 const int NR_TYPES = ARRAY_SIZE(max_vals);
112 struct kbd_struct kbd_table[MAX_NR_CONSOLES];
113 static struct kbd_struct *kbd = kbd_table;
115 struct vt_spawn_console vt_spawn_con = {
116 .lock = __SPIN_LOCK_UNLOCKED(vt_spawn_con.lock),
122 * Variables exported for vt.c
131 static struct input_handler kbd_handler;
132 static unsigned long key_down[BITS_TO_LONGS(KEY_CNT)]; /* 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 */
139 static unsigned char ledstate = 0xff; /* undefined */
140 static unsigned char ledioctl;
142 static struct ledptr {
145 unsigned char valid:1;
148 /* Simple translation table for the SysRq keys */
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;
162 static int sysrq_alt;
165 * Notifier list for console keyboard events
167 static ATOMIC_NOTIFIER_HEAD(keyboard_notifier_list);
169 int register_keyboard_notifier(struct notifier_block *nb)
171 return atomic_notifier_chain_register(&keyboard_notifier_list, nb);
173 EXPORT_SYMBOL_GPL(register_keyboard_notifier);
175 int unregister_keyboard_notifier(struct notifier_block *nb)
177 return atomic_notifier_chain_unregister(&keyboard_notifier_list, nb);
179 EXPORT_SYMBOL_GPL(unregister_keyboard_notifier);
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.
190 int getkeycode(unsigned int scancode)
192 struct input_handle *handle;
196 list_for_each_entry(handle, &kbd_handler.h_list, h_node) {
197 error = input_get_keycode(handle->dev, scancode, &keycode);
205 int setkeycode(unsigned int scancode, unsigned int keycode)
207 struct input_handle *handle;
210 list_for_each_entry(handle, &kbd_handler.h_list, h_node) {
211 error = input_set_keycode(handle->dev, scancode, keycode);
220 * Making beeps and bells.
222 static void kd_nosound(unsigned long ignored)
224 struct input_handle *handle;
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);
236 static DEFINE_TIMER(kd_mksound_timer, kd_nosound, 0, 0);
238 void kd_mksound(unsigned int hz, unsigned int ticks)
240 struct list_head *node;
242 del_timer(&kd_mksound_timer);
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);
252 if (test_bit(SND_BELL, handle->dev->sndbit)) {
253 input_inject_event(handle, EV_SND, SND_BELL, 1);
259 mod_timer(&kd_mksound_timer, jiffies + ticks);
265 * Setting the keyboard rate.
268 int kbd_rate(struct kbd_repeat *rep)
270 struct list_head *node;
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;
278 if (test_bit(EV_REP, dev->evbit)) {
280 input_inject_event(handle, EV_REP, REP_DELAY, rep->delay);
282 input_inject_event(handle, EV_REP, REP_PERIOD, rep->period);
283 d = dev->rep[REP_DELAY];
284 p = dev->rep[REP_PERIOD];
295 static void put_queue(struct vc_data *vc, int ch)
297 struct tty_struct *tty = vc->vc_tty;
300 tty_insert_flip_char(tty, ch, 0);
301 con_schedule_flip(tty);
305 static void puts_queue(struct vc_data *vc, char *cp)
307 struct tty_struct *tty = vc->vc_tty;
313 tty_insert_flip_char(tty, *cp, 0);
316 con_schedule_flip(tty);
319 static void applkey(struct vc_data *vc, int key, char mode)
321 static char buf[] = { 0x1b, 'O', 0x00, 0x00 };
323 buf[1] = (mode ? 'O' : '[');
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
334 static void to_utf8(struct vc_data *vc, uint 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)
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));
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
366 void compute_shiftstate(void)
368 unsigned int i, j, k, sym, val;
371 memset(shift_down, 0, sizeof(shift_down));
373 for (i = 0; i < ARRAY_SIZE(key_down); i++) {
378 k = i * BITS_PER_LONG;
380 for (j = 0; j < BITS_PER_LONG; j++, k++) {
382 if (!test_bit(k, key_down))
385 sym = U(key_maps[0][k]);
386 if (KTYP(sym) != KT_SHIFT && KTYP(sym) != KT_SLOCK)
390 if (val == KVAL(K_CAPSSHIFT))
394 shift_state |= (1 << val);
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.
406 static unsigned int handle_diacr(struct vc_data *vc, unsigned int ch)
408 unsigned int d = diacr;
413 if ((d & ~0xff) == BRL_UC_ROW) {
414 if ((ch & ~0xff) == BRL_UC_ROW)
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;
422 if (ch == ' ' || ch == (BRL_UC_ROW|0) || ch == d)
425 if (kbd->kbdmode == VC_UNICODE)
428 int c = conv_uni_to_8bit(d);
437 * Special function handlers
439 static void fn_enter(struct vc_data *vc)
442 if (kbd->kbdmode == VC_UNICODE)
445 int c = conv_uni_to_8bit(diacr);
452 if (vc_kbd_mode(kbd, VC_CRLF))
456 static void fn_caps_toggle(struct vc_data *vc)
460 chg_vc_kbd_led(kbd, VC_CAPSLOCK);
463 static void fn_caps_on(struct vc_data *vc)
467 set_vc_kbd_led(kbd, VC_CAPSLOCK);
470 static void fn_show_ptregs(struct vc_data *vc)
472 struct pt_regs *regs = get_irq_regs();
477 static void fn_hold(struct vc_data *vc)
479 struct tty_struct *tty = vc->vc_tty;
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.)
495 static void fn_num(struct vc_data *vc)
497 if (vc_kbd_mode(kbd,VC_APPLIC))
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.
509 static void fn_bare_num(struct vc_data *vc)
512 chg_vc_kbd_led(kbd, VC_NUMLOCK);
515 static void fn_lastcons(struct vc_data *vc)
517 /* switch to the last used console, ChN */
518 set_console(last_console);
521 static void fn_dec_console(struct vc_data *vc)
523 int i, cur = fg_console;
525 /* Currently switching? Queue this next switch relative to that. */
526 if (want_console != -1)
529 for (i = cur - 1; i != cur; i--) {
531 i = MAX_NR_CONSOLES - 1;
532 if (vc_cons_allocated(i))
538 static void fn_inc_console(struct vc_data *vc)
540 int i, cur = fg_console;
542 /* Currently switching? Queue this next switch relative to that. */
543 if (want_console != -1)
546 for (i = cur+1; i != cur; i++) {
547 if (i == MAX_NR_CONSOLES)
549 if (vc_cons_allocated(i))
555 static void fn_send_intr(struct vc_data *vc)
557 struct tty_struct *tty = vc->vc_tty;
561 tty_insert_flip_char(tty, 0, TTY_BREAK);
562 con_schedule_flip(tty);
565 static void fn_scroll_forw(struct vc_data *vc)
570 static void fn_scroll_back(struct vc_data *vc)
575 static void fn_show_mem(struct vc_data *vc)
580 static void fn_show_state(struct vc_data *vc)
585 static void fn_boot_it(struct vc_data *vc)
590 static void fn_compose(struct vc_data *vc)
595 static void fn_spawn_con(struct vc_data *vc)
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;
603 spin_unlock(&vt_spawn_con.lock);
606 static void fn_SAK(struct vc_data *vc)
608 struct work_struct *SAK_work = &vc_cons[fg_console].SAK_work;
609 schedule_work(SAK_work);
612 static void fn_null(struct vc_data *vc)
614 compute_shiftstate();
618 * Special key handlers
620 static void k_ignore(struct vc_data *vc, unsigned char value, char up_flag)
624 static void k_spec(struct vc_data *vc, unsigned char value, char up_flag)
628 if (value >= ARRAY_SIZE(fn_handler))
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);
637 static void k_lowercase(struct vc_data *vc, unsigned char value, char up_flag)
639 printk(KERN_ERR "keyboard.c: k_lowercase was called - impossible\n");
642 static void k_unicode(struct vc_data *vc, unsigned int value, char up_flag)
645 return; /* no action, if this is a key release */
648 value = handle_diacr(vc, value);
655 if (kbd->kbdmode == VC_UNICODE)
658 int c = conv_uni_to_8bit(value);
665 * Handle dead key. Note that we now may have several
666 * dead keys modifying the same character. Very useful
669 static void k_deadunicode(struct vc_data *vc, unsigned int value, char up_flag)
673 diacr = (diacr ? handle_diacr(vc, value) : value);
676 static void k_self(struct vc_data *vc, unsigned char value, char up_flag)
679 if (kbd->kbdmode == VC_UNICODE)
682 uni = conv_8bit_to_uni(value);
683 k_unicode(vc, uni, up_flag);
686 static void k_dead2(struct vc_data *vc, unsigned char value, char up_flag)
688 k_deadunicode(vc, value, up_flag);
692 * Obsolete - for backwards compatibility only
694 static void k_dead(struct vc_data *vc, unsigned char value, char up_flag)
696 static const unsigned char ret_diacr[NR_DEAD] = {'`', '\'', '^', '~', '"', ',' };
697 value = ret_diacr[value];
698 k_deadunicode(vc, value, up_flag);
701 static void k_cons(struct vc_data *vc, unsigned char value, char up_flag)
708 static void k_fn(struct vc_data *vc, unsigned char value, char up_flag)
715 if (v < ARRAY_SIZE(func_table)) {
716 if (func_table[value])
717 puts_queue(vc, func_table[value]);
719 printk(KERN_ERR "k_fn called with value=%d\n", value);
722 static void k_cur(struct vc_data *vc, unsigned char value, char up_flag)
724 static const char cur_chars[] = "BDCA";
728 applkey(vc, cur_chars[value], vc_kbd_mode(kbd, VC_CKMODE));
731 static void k_pad(struct vc_data *vc, unsigned char value, char up_flag)
733 static const char pad_chars[] = "0123456789+-*/\015,.?()#";
734 static const char app_map[] = "pqrstuvwxylSRQMnnmPQS";
737 return; /* no action, if this is a key release */
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);
745 if (!vc_kbd_led(kbd, VC_NUMLOCK))
749 k_fn(vc, KVAL(K_REMOVE), 0);
752 k_fn(vc, KVAL(K_INSERT), 0);
755 k_fn(vc, KVAL(K_SELECT), 0);
758 k_cur(vc, KVAL(K_DOWN), 0);
761 k_fn(vc, KVAL(K_PGDN), 0);
764 k_cur(vc, KVAL(K_LEFT), 0);
767 k_cur(vc, KVAL(K_RIGHT), 0);
770 k_fn(vc, KVAL(K_FIND), 0);
773 k_cur(vc, KVAL(K_UP), 0);
776 k_fn(vc, KVAL(K_PGUP), 0);
779 applkey(vc, 'G', vc_kbd_mode(kbd, VC_APPLIC));
783 put_queue(vc, pad_chars[value]);
784 if (value == KVAL(K_PENTER) && vc_kbd_mode(kbd, VC_CRLF))
788 static void k_shift(struct vc_data *vc, unsigned char value, char up_flag)
790 int old_state = shift_state;
796 * a CapsShift key acts like Shift but undoes CapsLock
798 if (value == KVAL(K_CAPSSHIFT)) {
799 value = KVAL(K_SHIFT);
801 clr_vc_kbd_led(kbd, VC_CAPSLOCK);
806 * handle the case that two shift or control
807 * keys are depressed simultaneously
809 if (shift_down[value])
814 if (shift_down[value])
815 shift_state |= (1 << value);
817 shift_state &= ~(1 << value);
820 if (up_flag && shift_state != old_state && npadch != -1) {
821 if (kbd->kbdmode == VC_UNICODE)
824 put_queue(vc, npadch & 0xff);
829 static void k_meta(struct vc_data *vc, unsigned char value, char up_flag)
834 if (vc_kbd_mode(kbd, VC_META)) {
835 put_queue(vc, '\033');
836 put_queue(vc, value);
838 put_queue(vc, value | 0x80);
841 static void k_ascii(struct vc_data *vc, unsigned char value, char up_flag)
849 /* decimal input of code, while Alt depressed */
852 /* hexadecimal input of code, while AltGr depressed */
860 npadch = npadch * base + value;
863 static void k_lock(struct vc_data *vc, unsigned char value, char up_flag)
867 chg_vc_kbd_lock(kbd, value);
870 static void k_slock(struct vc_data *vc, unsigned char value, char up_flag)
872 k_shift(vc, value, up_flag);
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]) {
879 chg_vc_kbd_slock(kbd, value);
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);
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);
892 static void k_brlcommit(struct vc_data *vc, unsigned int pattern, char up_flag)
894 static unsigned long chords;
895 static unsigned committed;
898 k_deadunicode(vc, BRL_UC_ROW | pattern, up_flag);
900 committed |= pattern;
902 if (chords == brl_nbchords) {
903 k_unicode(vc, BRL_UC_ROW | committed, up_flag);
910 static void k_brl(struct vc_data *vc, unsigned char value, char up_flag)
912 static unsigned pressed,committing;
913 static unsigned long releasestart;
915 if (kbd->kbdmode != VC_UNICODE) {
917 printk("keyboard mode must be unicode for braille patterns\n");
922 k_unicode(vc, BRL_UC_ROW, up_flag);
933 releasestart + msecs_to_jiffies(brl_timeout))) {
934 committing = pressed;
935 releasestart = jiffies;
937 pressed &= ~(1 << (value - 1));
940 k_brlcommit(vc, committing, 0);
946 k_brlcommit(vc, committing, 0);
949 pressed &= ~(1 << (value - 1));
952 pressed |= 1 << (value - 1);
954 committing = pressed;
959 * The leds display either (i) the status of NumLock, CapsLock, ScrollLock,
960 * or (ii) whatever pattern of lights people want to show using KDSETLED,
961 * or (iii) specified bits of specified words in kernel memory.
963 unsigned char getledstate(void)
968 void setledstate(struct kbd_struct *kbd, unsigned int led)
972 kbd->ledmode = LED_SHOW_IOCTL;
974 kbd->ledmode = LED_SHOW_FLAGS;
978 static inline unsigned char getleds(void)
980 struct kbd_struct *kbd = kbd_table + fg_console;
984 if (kbd->ledmode == LED_SHOW_IOCTL)
987 leds = kbd->ledflagstate;
989 if (kbd->ledmode == LED_SHOW_MEM) {
990 for (i = 0; i < 3; i++)
991 if (ledptrs[i].valid) {
992 if (*ledptrs[i].addr & ledptrs[i].mask)
1002 * This routine is the bottom half of the keyboard interrupt
1003 * routine, and runs with all interrupts enabled. It does
1004 * console changing, led setting and copy_to_cooked, which can
1005 * take a reasonably long time.
1007 * Aside from timing (which isn't really that important for
1008 * keyboard interrupts as they happen often), using the software
1009 * interrupt routines for this thing allows us to easily mask
1010 * this when we don't want any of the above to happen.
1011 * This allows for easy and efficient race-condition prevention
1012 * for kbd_start => input_inject_event(dev, EV_LED, ...) => ...
1015 static void kbd_bh(unsigned long dummy)
1017 struct list_head *node;
1018 unsigned char leds = getleds();
1020 if (leds != ledstate) {
1021 list_for_each(node, &kbd_handler.h_list) {
1022 struct input_handle *handle = to_handle_h(node);
1023 input_inject_event(handle, EV_LED, LED_SCROLLL, !!(leds & 0x01));
1024 input_inject_event(handle, EV_LED, LED_NUML, !!(leds & 0x02));
1025 input_inject_event(handle, EV_LED, LED_CAPSL, !!(leds & 0x04));
1026 input_inject_event(handle, EV_SYN, SYN_REPORT, 0);
1033 DECLARE_TASKLET_DISABLED(keyboard_tasklet, kbd_bh, 0);
1035 #if defined(CONFIG_X86) || defined(CONFIG_IA64) || defined(CONFIG_ALPHA) ||\
1036 defined(CONFIG_MIPS) || defined(CONFIG_PPC) || defined(CONFIG_SPARC) ||\
1037 defined(CONFIG_PARISC) || defined(CONFIG_SUPERH) ||\
1038 (defined(CONFIG_ARM) && defined(CONFIG_KEYBOARD_ATKBD) && !defined(CONFIG_ARCH_RPC)) ||\
1039 defined(CONFIG_AVR32)
1041 #define HW_RAW(dev) (test_bit(EV_MSC, dev->evbit) && test_bit(MSC_RAW, dev->mscbit) &&\
1042 ((dev)->id.bustype == BUS_I8042) && ((dev)->id.vendor == 0x0001) && ((dev)->id.product == 0x0001))
1044 static const unsigned short x86_keycodes[256] =
1045 { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,
1046 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31,
1047 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47,
1048 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63,
1049 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79,
1050 80, 81, 82, 83, 84,118, 86, 87, 88,115,120,119,121,112,123, 92,
1051 284,285,309, 0,312, 91,327,328,329,331,333,335,336,337,338,339,
1052 367,288,302,304,350, 89,334,326,267,126,268,269,125,347,348,349,
1053 360,261,262,263,268,376,100,101,321,316,373,286,289,102,351,355,
1054 103,104,105,275,287,279,258,106,274,107,294,364,358,363,362,361,
1055 291,108,381,281,290,272,292,305,280, 99,112,257,306,359,113,114,
1056 264,117,271,374,379,265,266, 93, 94, 95, 85,259,375,260, 90,116,
1057 377,109,111,277,278,282,283,295,296,297,299,300,301,293,303,307,
1058 308,310,313,314,315,317,318,319,320,357,322,323,324,325,276,330,
1059 332,340,365,342,343,344,345,346,356,270,341,368,369,370,371,372 };
1062 static int sparc_l1_a_state = 0;
1063 extern void sun_do_break(void);
1066 static int emulate_raw(struct vc_data *vc, unsigned int keycode,
1067 unsigned char up_flag)
1073 put_queue(vc, 0xe1);
1074 put_queue(vc, 0x1d | up_flag);
1075 put_queue(vc, 0x45 | up_flag);
1080 put_queue(vc, 0xf2);
1085 put_queue(vc, 0xf1);
1090 * Real AT keyboards (that's what we're trying
1091 * to emulate here emit 0xe0 0x2a 0xe0 0x37 when
1092 * pressing PrtSc/SysRq alone, but simply 0x54
1093 * when pressing Alt+PrtSc/SysRq.
1096 put_queue(vc, 0x54 | up_flag);
1098 put_queue(vc, 0xe0);
1099 put_queue(vc, 0x2a | up_flag);
1100 put_queue(vc, 0xe0);
1101 put_queue(vc, 0x37 | up_flag);
1109 code = x86_keycodes[keycode];
1114 put_queue(vc, 0xe0);
1115 put_queue(vc, (code & 0x7f) | up_flag);
1125 #define HW_RAW(dev) 0
1127 #warning "Cannot generate rawmode keyboard for your architecture yet."
1129 static int emulate_raw(struct vc_data *vc, unsigned int keycode, unsigned char up_flag)
1134 put_queue(vc, keycode | up_flag);
1139 static void kbd_rawcode(unsigned char data)
1141 struct vc_data *vc = vc_cons[fg_console].d;
1142 kbd = kbd_table + fg_console;
1143 if (kbd->kbdmode == VC_RAW)
1144 put_queue(vc, data);
1147 static void kbd_keycode(unsigned int keycode, int down, int hw_raw)
1149 struct vc_data *vc = vc_cons[fg_console].d;
1150 unsigned short keysym, *key_map;
1151 unsigned char type, raw_mode;
1152 struct tty_struct *tty;
1154 struct keyboard_notifier_param param = { .vc = vc, .value = keycode, .down = down };
1158 if (tty && (!tty->driver_data)) {
1159 /* No driver data? Strange. Okay we fix it then. */
1160 tty->driver_data = vc;
1163 kbd = kbd_table + fg_console;
1165 if (keycode == KEY_LEFTALT || keycode == KEY_RIGHTALT)
1166 sysrq_alt = down ? keycode : 0;
1168 if (keycode == KEY_STOP)
1169 sparc_l1_a_state = down;
1174 #ifdef CONFIG_MAC_EMUMOUSEBTN
1175 if (mac_hid_mouse_emulate_buttons(1, keycode, down))
1177 #endif /* CONFIG_MAC_EMUMOUSEBTN */
1179 if ((raw_mode = (kbd->kbdmode == VC_RAW)) && !hw_raw)
1180 if (emulate_raw(vc, keycode, !down << 7))
1181 if (keycode < BTN_MISC && printk_ratelimit())
1182 printk(KERN_WARNING "keyboard.c: can't emulate rawmode for keycode %d\n", keycode);
1184 #ifdef CONFIG_MAGIC_SYSRQ /* Handle the SysRq Hack */
1185 if (keycode == KEY_SYSRQ && (sysrq_down || (down == 1 && sysrq_alt))) {
1188 sysrq_alt_use = sysrq_alt;
1192 if (sysrq_down && !down && keycode == sysrq_alt_use)
1194 if (sysrq_down && down && !rep) {
1195 handle_sysrq(kbd_sysrq_xlate[keycode], tty);
1200 if (keycode == KEY_A && sparc_l1_a_state) {
1201 sparc_l1_a_state = 0;
1206 if (kbd->kbdmode == VC_MEDIUMRAW) {
1208 * This is extended medium raw mode, with keys above 127
1209 * encoded as 0, high 7 bits, low 7 bits, with the 0 bearing
1210 * the 'up' flag if needed. 0 is reserved, so this shouldn't
1211 * interfere with anything else. The two bytes after 0 will
1212 * always have the up flag set not to interfere with older
1213 * applications. This allows for 16384 different keycodes,
1214 * which should be enough.
1216 if (keycode < 128) {
1217 put_queue(vc, keycode | (!down << 7));
1219 put_queue(vc, !down << 7);
1220 put_queue(vc, (keycode >> 7) | 0x80);
1221 put_queue(vc, keycode | 0x80);
1227 set_bit(keycode, key_down);
1229 clear_bit(keycode, key_down);
1232 (!vc_kbd_mode(kbd, VC_REPEAT) ||
1233 (tty && !L_ECHO(tty) && tty->driver->chars_in_buffer(tty)))) {
1235 * Don't repeat a key if the input buffers are not empty and the
1236 * characters get aren't echoed locally. This makes key repeat
1237 * usable with slow applications and under heavy loads.
1242 param.shift = shift_final = (shift_state | kbd->slockstate) ^ kbd->lockstate;
1243 param.ledstate = kbd->ledflagstate;
1244 key_map = key_maps[shift_final];
1246 if (atomic_notifier_call_chain(&keyboard_notifier_list, KBD_KEYCODE, ¶m) == NOTIFY_STOP || !key_map) {
1247 atomic_notifier_call_chain(&keyboard_notifier_list, KBD_UNBOUND_KEYCODE, ¶m);
1248 compute_shiftstate();
1249 kbd->slockstate = 0;
1253 if (keycode > NR_KEYS)
1254 if (keycode >= KEY_BRL_DOT1 && keycode <= KEY_BRL_DOT8)
1255 keysym = K(KT_BRL, keycode - KEY_BRL_DOT1 + 1);
1259 keysym = key_map[keycode];
1261 type = KTYP(keysym);
1264 param.value = keysym;
1265 if (atomic_notifier_call_chain(&keyboard_notifier_list, KBD_UNICODE, ¶m) == NOTIFY_STOP)
1267 if (down && !raw_mode)
1268 to_utf8(vc, keysym);
1274 if (type == KT_LETTER) {
1276 if (vc_kbd_led(kbd, VC_CAPSLOCK)) {
1277 key_map = key_maps[shift_final ^ (1 << KG_SHIFT)];
1279 keysym = key_map[keycode];
1282 param.value = keysym;
1284 if (atomic_notifier_call_chain(&keyboard_notifier_list, KBD_KEYSYM, ¶m) == NOTIFY_STOP)
1287 if (raw_mode && type != KT_SPEC && type != KT_SHIFT)
1290 (*k_handler[type])(vc, keysym & 0xff, !down);
1292 param.ledstate = kbd->ledflagstate;
1293 atomic_notifier_call_chain(&keyboard_notifier_list, KBD_POST_KEYSYM, ¶m);
1295 if (type != KT_SLOCK)
1296 kbd->slockstate = 0;
1299 static void kbd_event(struct input_handle *handle, unsigned int event_type,
1300 unsigned int event_code, int value)
1302 if (event_type == EV_MSC && event_code == MSC_RAW && HW_RAW(handle->dev))
1304 if (event_type == EV_KEY)
1305 kbd_keycode(event_code, value, HW_RAW(handle->dev));
1306 tasklet_schedule(&keyboard_tasklet);
1307 do_poke_blanked_console = 1;
1308 schedule_console_callback();
1312 * When a keyboard (or other input device) is found, the kbd_connect
1313 * function is called. The function then looks at the device, and if it
1314 * likes it, it can open it and get events from it. In this (kbd_connect)
1315 * function, we should decide which VT to bind that keyboard to initially.
1317 static int kbd_connect(struct input_handler *handler, struct input_dev *dev,
1318 const struct input_device_id *id)
1320 struct input_handle *handle;
1324 for (i = KEY_RESERVED; i < BTN_MISC; i++)
1325 if (test_bit(i, dev->keybit))
1328 if (i == BTN_MISC && !test_bit(EV_SND, dev->evbit))
1331 handle = kzalloc(sizeof(struct input_handle), GFP_KERNEL);
1336 handle->handler = handler;
1337 handle->name = "kbd";
1339 error = input_register_handle(handle);
1341 goto err_free_handle;
1343 error = input_open_device(handle);
1345 goto err_unregister_handle;
1349 err_unregister_handle:
1350 input_unregister_handle(handle);
1356 static void kbd_disconnect(struct input_handle *handle)
1358 input_close_device(handle);
1359 input_unregister_handle(handle);
1364 * Start keyboard handler on the new keyboard by refreshing LED state to
1365 * match the rest of the system.
1367 static void kbd_start(struct input_handle *handle)
1369 unsigned char leds = ledstate;
1371 tasklet_disable(&keyboard_tasklet);
1373 input_inject_event(handle, EV_LED, LED_SCROLLL, !!(leds & 0x01));
1374 input_inject_event(handle, EV_LED, LED_NUML, !!(leds & 0x02));
1375 input_inject_event(handle, EV_LED, LED_CAPSL, !!(leds & 0x04));
1376 input_inject_event(handle, EV_SYN, SYN_REPORT, 0);
1378 tasklet_enable(&keyboard_tasklet);
1381 static const struct input_device_id kbd_ids[] = {
1383 .flags = INPUT_DEVICE_ID_MATCH_EVBIT,
1384 .evbit = { BIT_MASK(EV_KEY) },
1388 .flags = INPUT_DEVICE_ID_MATCH_EVBIT,
1389 .evbit = { BIT_MASK(EV_SND) },
1392 { }, /* Terminating entry */
1395 MODULE_DEVICE_TABLE(input, kbd_ids);
1397 static struct input_handler kbd_handler = {
1399 .connect = kbd_connect,
1400 .disconnect = kbd_disconnect,
1403 .id_table = kbd_ids,
1406 int __init kbd_init(void)
1411 for (i = 0; i < MAX_NR_CONSOLES; i++) {
1412 kbd_table[i].ledflagstate = KBD_DEFLEDS;
1413 kbd_table[i].default_ledflagstate = KBD_DEFLEDS;
1414 kbd_table[i].ledmode = LED_SHOW_FLAGS;
1415 kbd_table[i].lockstate = KBD_DEFLOCK;
1416 kbd_table[i].slockstate = 0;
1417 kbd_table[i].modeflags = KBD_DEFMODE;
1418 kbd_table[i].kbdmode = default_utf8 ? VC_UNICODE : VC_XLATE;
1421 error = input_register_handler(&kbd_handler);
1425 tasklet_enable(&keyboard_tasklet);
1426 tasklet_schedule(&keyboard_tasklet);