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/module.h>
28 #include <linux/sched.h>
29 #include <linux/tty.h>
30 #include <linux/tty_flip.h>
32 #include <linux/string.h>
33 #include <linux/init.h>
34 #include <linux/slab.h>
35 #include <linux/irq.h>
37 #include <linux/kbd_kern.h>
38 #include <linux/kbd_diacr.h>
39 #include <linux/vt_kern.h>
40 #include <linux/sysrq.h>
41 #include <linux/input.h>
42 #include <linux/reboot.h>
44 static void kbd_disconnect(struct input_handle *handle);
45 extern void ctrl_alt_del(void);
48 * Exported functions/variables
51 #define KBD_DEFMODE ((1 << VC_REPEAT) | (1 << VC_META))
54 * Some laptops take the 789uiojklm,. keys as number pad when NumLock is on.
55 * This seems a good reason to start with NumLock off. On HIL keyboards
56 * of PARISC machines however there is no NumLock key and everyone expects the keypad
57 * to be used for numbers.
60 #if defined(CONFIG_PARISC) && (defined(CONFIG_KEYBOARD_HIL) || defined(CONFIG_KEYBOARD_HIL_OLD))
61 #define KBD_DEFLEDS (1 << VC_NUMLOCK)
68 void compute_shiftstate(void);
75 k_self, k_fn, k_spec, k_pad,\
76 k_dead, k_cons, k_cur, k_shift,\
77 k_meta, k_ascii, k_lock, k_lowercase,\
78 k_slock, k_dead2, k_brl, k_ignore
80 typedef void (k_handler_fn)(struct vc_data *vc, unsigned char value,
82 static k_handler_fn K_HANDLERS;
83 static k_handler_fn *k_handler[16] = { K_HANDLERS };
86 fn_null, fn_enter, fn_show_ptregs, fn_show_mem,\
87 fn_show_state, fn_send_intr, fn_lastcons, fn_caps_toggle,\
88 fn_num, fn_hold, fn_scroll_forw, fn_scroll_back,\
89 fn_boot_it, fn_caps_on, fn_compose, fn_SAK,\
90 fn_dec_console, fn_inc_console, fn_spawn_con, fn_bare_num
92 typedef void (fn_handler_fn)(struct vc_data *vc);
93 static fn_handler_fn FN_HANDLERS;
94 static fn_handler_fn *fn_handler[] = { FN_HANDLERS };
97 * Variables exported for vt_ioctl.c
100 /* maximum values each key_handler can handle */
101 const int max_vals[] = {
102 255, ARRAY_SIZE(func_table) - 1, ARRAY_SIZE(fn_handler) - 1, NR_PAD - 1,
103 NR_DEAD - 1, 255, 3, NR_SHIFT - 1, 255, NR_ASCII - 1, NR_LOCK - 1,
104 255, NR_LOCK - 1, 255, NR_BRL - 1
107 const int NR_TYPES = ARRAY_SIZE(max_vals);
109 struct kbd_struct kbd_table[MAX_NR_CONSOLES];
110 static struct kbd_struct *kbd = kbd_table;
112 struct vt_spawn_console vt_spawn_con = {
113 .lock = SPIN_LOCK_UNLOCKED,
119 * Variables exported for vt.c
128 static struct input_handler kbd_handler;
129 static unsigned long key_down[NBITS(KEY_MAX)]; /* keyboard key bitmap */
130 static unsigned char shift_down[NR_SHIFT]; /* shift state counters.. */
131 static int dead_key_next;
132 static int npadch = -1; /* -1 or number assembled on pad */
133 static unsigned int diacr;
134 static char rep; /* flag telling character repeat */
136 static unsigned char ledstate = 0xff; /* undefined */
137 static unsigned char ledioctl;
139 static struct ledptr {
142 unsigned char valid:1;
145 /* Simple translation table for the SysRq keys */
147 #ifdef CONFIG_MAGIC_SYSRQ
148 unsigned char kbd_sysrq_xlate[KEY_MAX + 1] =
149 "\000\0331234567890-=\177\t" /* 0x00 - 0x0f */
150 "qwertyuiop[]\r\000as" /* 0x10 - 0x1f */
151 "dfghjkl;'`\000\\zxcv" /* 0x20 - 0x2f */
152 "bnm,./\000*\000 \000\201\202\203\204\205" /* 0x30 - 0x3f */
153 "\206\207\210\211\212\000\000789-456+1" /* 0x40 - 0x4f */
154 "230\177\000\000\213\214\000\000\000\000\000\000\000\000\000\000" /* 0x50 - 0x5f */
155 "\r\000/"; /* 0x60 - 0x6f */
156 static int sysrq_down;
157 static int sysrq_alt_use;
159 static int sysrq_alt;
162 * Translation of scancodes to keycodes. We set them on only the first attached
163 * keyboard - for per-keyboard setting, /dev/input/event is more useful.
165 int getkeycode(unsigned int scancode)
167 struct list_head *node;
168 struct input_dev *dev = NULL;
170 list_for_each(node, &kbd_handler.h_list) {
171 struct input_handle *handle = to_handle_h(node);
172 if (handle->dev->keycodesize) {
181 if (scancode >= dev->keycodemax)
184 return INPUT_KEYCODE(dev, scancode);
187 int setkeycode(unsigned int scancode, unsigned int keycode)
189 struct list_head *node;
190 struct input_dev *dev = NULL;
191 unsigned int i, oldkey;
193 list_for_each(node, &kbd_handler.h_list) {
194 struct input_handle *handle = to_handle_h(node);
195 if (handle->dev->keycodesize) {
204 if (scancode >= dev->keycodemax)
206 if (keycode < 0 || keycode > KEY_MAX)
208 if (dev->keycodesize < sizeof(keycode) && (keycode >> (dev->keycodesize * 8)))
211 oldkey = SET_INPUT_KEYCODE(dev, scancode, keycode);
213 clear_bit(oldkey, dev->keybit);
214 set_bit(keycode, dev->keybit);
216 for (i = 0; i < dev->keycodemax; i++)
217 if (INPUT_KEYCODE(dev,i) == oldkey)
218 set_bit(oldkey, dev->keybit);
224 * Making beeps and bells.
226 static void kd_nosound(unsigned long ignored)
228 struct list_head *node;
230 list_for_each(node, &kbd_handler.h_list) {
231 struct input_handle *handle = to_handle_h(node);
232 if (test_bit(EV_SND, handle->dev->evbit)) {
233 if (test_bit(SND_TONE, handle->dev->sndbit))
234 input_inject_event(handle, EV_SND, SND_TONE, 0);
235 if (test_bit(SND_BELL, handle->dev->sndbit))
236 input_inject_event(handle, EV_SND, SND_BELL, 0);
241 static DEFINE_TIMER(kd_mksound_timer, kd_nosound, 0, 0);
243 void kd_mksound(unsigned int hz, unsigned int ticks)
245 struct list_head *node;
247 del_timer(&kd_mksound_timer);
250 list_for_each_prev(node, &kbd_handler.h_list) {
251 struct input_handle *handle = to_handle_h(node);
252 if (test_bit(EV_SND, handle->dev->evbit)) {
253 if (test_bit(SND_TONE, handle->dev->sndbit)) {
254 input_inject_event(handle, EV_SND, SND_TONE, hz);
257 if (test_bit(SND_BELL, handle->dev->sndbit)) {
258 input_inject_event(handle, EV_SND, SND_BELL, 1);
264 mod_timer(&kd_mksound_timer, jiffies + ticks);
270 * Setting the keyboard rate.
273 int kbd_rate(struct kbd_repeat *rep)
275 struct list_head *node;
279 list_for_each(node, &kbd_handler.h_list) {
280 struct input_handle *handle = to_handle_h(node);
281 struct input_dev *dev = handle->dev;
283 if (test_bit(EV_REP, dev->evbit)) {
285 input_inject_event(handle, EV_REP, REP_DELAY, rep->delay);
287 input_inject_event(handle, EV_REP, REP_PERIOD, rep->period);
288 d = dev->rep[REP_DELAY];
289 p = dev->rep[REP_PERIOD];
300 static void put_queue(struct vc_data *vc, int ch)
302 struct tty_struct *tty = vc->vc_tty;
305 tty_insert_flip_char(tty, ch, 0);
306 con_schedule_flip(tty);
310 static void puts_queue(struct vc_data *vc, char *cp)
312 struct tty_struct *tty = vc->vc_tty;
318 tty_insert_flip_char(tty, *cp, 0);
321 con_schedule_flip(tty);
324 static void applkey(struct vc_data *vc, int key, char mode)
326 static char buf[] = { 0x1b, 'O', 0x00, 0x00 };
328 buf[1] = (mode ? 'O' : '[');
334 * Many other routines do put_queue, but I think either
335 * they produce ASCII, or they produce some user-assigned
336 * string, and in both cases we might assume that it is
337 * in utf-8 already. UTF-8 is defined for words of up to 31 bits,
338 * but we need only 16 bits here
340 static void to_utf8(struct vc_data *vc, ushort c)
345 else if (c < 0x800) {
346 /* 110***** 10****** */
347 put_queue(vc, 0xc0 | (c >> 6));
348 put_queue(vc, 0x80 | (c & 0x3f));
350 /* 1110**** 10****** 10****** */
351 put_queue(vc, 0xe0 | (c >> 12));
352 put_queue(vc, 0x80 | ((c >> 6) & 0x3f));
353 put_queue(vc, 0x80 | (c & 0x3f));
358 * Called after returning from RAW mode or when changing consoles - recompute
359 * shift_down[] and shift_state from key_down[] maybe called when keymap is
360 * undefined, so that shiftkey release is seen
362 void compute_shiftstate(void)
364 unsigned int i, j, k, sym, val;
367 memset(shift_down, 0, sizeof(shift_down));
369 for (i = 0; i < ARRAY_SIZE(key_down); i++) {
374 k = i * BITS_PER_LONG;
376 for (j = 0; j < BITS_PER_LONG; j++, k++) {
378 if (!test_bit(k, key_down))
381 sym = U(key_maps[0][k]);
382 if (KTYP(sym) != KT_SHIFT && KTYP(sym) != KT_SLOCK)
386 if (val == KVAL(K_CAPSSHIFT))
390 shift_state |= (1 << val);
396 * We have a combining character DIACR here, followed by the character CH.
397 * If the combination occurs in the table, return the corresponding value.
398 * Otherwise, if CH is a space or equals DIACR, return DIACR.
399 * Otherwise, conclude that DIACR was not combining after all,
400 * queue it and return CH.
402 static unsigned int handle_diacr(struct vc_data *vc, unsigned int ch)
404 unsigned int d = diacr;
409 if ((d & ~0xff) == BRL_UC_ROW) {
410 if ((ch & ~0xff) == BRL_UC_ROW)
413 for (i = 0; i < accent_table_size; i++)
414 if (accent_table[i].diacr == d && accent_table[i].base == ch)
415 return accent_table[i].result;
418 if (ch == ' ' || ch == (BRL_UC_ROW|0) || ch == d)
421 if (kbd->kbdmode == VC_UNICODE)
430 * Special function handlers
432 static void fn_enter(struct vc_data *vc)
435 if (kbd->kbdmode == VC_UNICODE)
437 else if (diacr < 0x100)
438 put_queue(vc, diacr);
442 if (vc_kbd_mode(kbd, VC_CRLF))
446 static void fn_caps_toggle(struct vc_data *vc)
450 chg_vc_kbd_led(kbd, VC_CAPSLOCK);
453 static void fn_caps_on(struct vc_data *vc)
457 set_vc_kbd_led(kbd, VC_CAPSLOCK);
460 static void fn_show_ptregs(struct vc_data *vc)
462 struct pt_regs *regs = get_irq_regs();
467 static void fn_hold(struct vc_data *vc)
469 struct tty_struct *tty = vc->vc_tty;
475 * Note: SCROLLOCK will be set (cleared) by stop_tty (start_tty);
476 * these routines are also activated by ^S/^Q.
477 * (And SCROLLOCK can also be set by the ioctl KDSKBLED.)
485 static void fn_num(struct vc_data *vc)
487 if (vc_kbd_mode(kbd,VC_APPLIC))
494 * Bind this to Shift-NumLock if you work in application keypad mode
495 * but want to be able to change the NumLock flag.
496 * Bind this to NumLock if you prefer that the NumLock key always
497 * changes the NumLock flag.
499 static void fn_bare_num(struct vc_data *vc)
502 chg_vc_kbd_led(kbd, VC_NUMLOCK);
505 static void fn_lastcons(struct vc_data *vc)
507 /* switch to the last used console, ChN */
508 set_console(last_console);
511 static void fn_dec_console(struct vc_data *vc)
513 int i, cur = fg_console;
515 /* Currently switching? Queue this next switch relative to that. */
516 if (want_console != -1)
519 for (i = cur - 1; i != cur; i--) {
521 i = MAX_NR_CONSOLES - 1;
522 if (vc_cons_allocated(i))
528 static void fn_inc_console(struct vc_data *vc)
530 int i, cur = fg_console;
532 /* Currently switching? Queue this next switch relative to that. */
533 if (want_console != -1)
536 for (i = cur+1; i != cur; i++) {
537 if (i == MAX_NR_CONSOLES)
539 if (vc_cons_allocated(i))
545 static void fn_send_intr(struct vc_data *vc)
547 struct tty_struct *tty = vc->vc_tty;
551 tty_insert_flip_char(tty, 0, TTY_BREAK);
552 con_schedule_flip(tty);
555 static void fn_scroll_forw(struct vc_data *vc)
560 static void fn_scroll_back(struct vc_data *vc)
565 static void fn_show_mem(struct vc_data *vc)
570 static void fn_show_state(struct vc_data *vc)
575 static void fn_boot_it(struct vc_data *vc)
580 static void fn_compose(struct vc_data *vc)
585 static void fn_spawn_con(struct vc_data *vc)
587 spin_lock(&vt_spawn_con.lock);
588 if (vt_spawn_con.pid)
589 if (kill_pid(vt_spawn_con.pid, vt_spawn_con.sig, 1)) {
590 put_pid(vt_spawn_con.pid);
591 vt_spawn_con.pid = NULL;
593 spin_unlock(&vt_spawn_con.lock);
596 static void fn_SAK(struct vc_data *vc)
598 struct work_struct *SAK_work = &vc_cons[fg_console].SAK_work;
599 schedule_work(SAK_work);
602 static void fn_null(struct vc_data *vc)
604 compute_shiftstate();
608 * Special key handlers
610 static void k_ignore(struct vc_data *vc, unsigned char value, char up_flag)
614 static void k_spec(struct vc_data *vc, unsigned char value, char up_flag)
618 if (value >= ARRAY_SIZE(fn_handler))
620 if ((kbd->kbdmode == VC_RAW ||
621 kbd->kbdmode == VC_MEDIUMRAW) &&
622 value != KVAL(K_SAK))
623 return; /* SAK is allowed even in raw mode */
624 fn_handler[value](vc);
627 static void k_lowercase(struct vc_data *vc, unsigned char value, char up_flag)
629 printk(KERN_ERR "keyboard.c: k_lowercase was called - impossible\n");
632 static void k_unicode(struct vc_data *vc, unsigned int value, char up_flag)
635 return; /* no action, if this is a key release */
638 value = handle_diacr(vc, value);
645 if (kbd->kbdmode == VC_UNICODE)
647 else if (value < 0x100)
648 put_queue(vc, value);
652 * Handle dead key. Note that we now may have several
653 * dead keys modifying the same character. Very useful
656 static void k_deadunicode(struct vc_data *vc, unsigned int value, char up_flag)
660 diacr = (diacr ? handle_diacr(vc, value) : value);
663 static void k_self(struct vc_data *vc, unsigned char value, char up_flag)
665 k_unicode(vc, value, up_flag);
668 static void k_dead2(struct vc_data *vc, unsigned char value, char up_flag)
670 k_deadunicode(vc, value, up_flag);
674 * Obsolete - for backwards compatibility only
676 static void k_dead(struct vc_data *vc, unsigned char value, char up_flag)
678 static const unsigned char ret_diacr[NR_DEAD] = {'`', '\'', '^', '~', '"', ',' };
679 value = ret_diacr[value];
680 k_deadunicode(vc, value, up_flag);
683 static void k_cons(struct vc_data *vc, unsigned char value, char up_flag)
690 static void k_fn(struct vc_data *vc, unsigned char value, char up_flag)
697 if (v < ARRAY_SIZE(func_table)) {
698 if (func_table[value])
699 puts_queue(vc, func_table[value]);
701 printk(KERN_ERR "k_fn called with value=%d\n", value);
704 static void k_cur(struct vc_data *vc, unsigned char value, char up_flag)
706 static const char cur_chars[] = "BDCA";
710 applkey(vc, cur_chars[value], vc_kbd_mode(kbd, VC_CKMODE));
713 static void k_pad(struct vc_data *vc, unsigned char value, char up_flag)
715 static const char pad_chars[] = "0123456789+-*/\015,.?()#";
716 static const char app_map[] = "pqrstuvwxylSRQMnnmPQS";
719 return; /* no action, if this is a key release */
721 /* kludge... shift forces cursor/number keys */
722 if (vc_kbd_mode(kbd, VC_APPLIC) && !shift_down[KG_SHIFT]) {
723 applkey(vc, app_map[value], 1);
727 if (!vc_kbd_led(kbd, VC_NUMLOCK))
731 k_fn(vc, KVAL(K_REMOVE), 0);
734 k_fn(vc, KVAL(K_INSERT), 0);
737 k_fn(vc, KVAL(K_SELECT), 0);
740 k_cur(vc, KVAL(K_DOWN), 0);
743 k_fn(vc, KVAL(K_PGDN), 0);
746 k_cur(vc, KVAL(K_LEFT), 0);
749 k_cur(vc, KVAL(K_RIGHT), 0);
752 k_fn(vc, KVAL(K_FIND), 0);
755 k_cur(vc, KVAL(K_UP), 0);
758 k_fn(vc, KVAL(K_PGUP), 0);
761 applkey(vc, 'G', vc_kbd_mode(kbd, VC_APPLIC));
765 put_queue(vc, pad_chars[value]);
766 if (value == KVAL(K_PENTER) && vc_kbd_mode(kbd, VC_CRLF))
770 static void k_shift(struct vc_data *vc, unsigned char value, char up_flag)
772 int old_state = shift_state;
778 * a CapsShift key acts like Shift but undoes CapsLock
780 if (value == KVAL(K_CAPSSHIFT)) {
781 value = KVAL(K_SHIFT);
783 clr_vc_kbd_led(kbd, VC_CAPSLOCK);
788 * handle the case that two shift or control
789 * keys are depressed simultaneously
791 if (shift_down[value])
796 if (shift_down[value])
797 shift_state |= (1 << value);
799 shift_state &= ~(1 << value);
802 if (up_flag && shift_state != old_state && npadch != -1) {
803 if (kbd->kbdmode == VC_UNICODE)
804 to_utf8(vc, npadch & 0xffff);
806 put_queue(vc, npadch & 0xff);
811 static void k_meta(struct vc_data *vc, unsigned char value, char up_flag)
816 if (vc_kbd_mode(kbd, VC_META)) {
817 put_queue(vc, '\033');
818 put_queue(vc, value);
820 put_queue(vc, value | 0x80);
823 static void k_ascii(struct vc_data *vc, unsigned char value, char up_flag)
831 /* decimal input of code, while Alt depressed */
834 /* hexadecimal input of code, while AltGr depressed */
842 npadch = npadch * base + value;
845 static void k_lock(struct vc_data *vc, unsigned char value, char up_flag)
849 chg_vc_kbd_lock(kbd, value);
852 static void k_slock(struct vc_data *vc, unsigned char value, char up_flag)
854 k_shift(vc, value, up_flag);
857 chg_vc_kbd_slock(kbd, value);
858 /* try to make Alt, oops, AltGr and such work */
859 if (!key_maps[kbd->lockstate ^ kbd->slockstate]) {
861 chg_vc_kbd_slock(kbd, value);
865 /* by default, 300ms interval for combination release */
866 static unsigned brl_timeout = 300;
867 MODULE_PARM_DESC(brl_timeout, "Braille keys release delay in ms (0 for commit on first key release)");
868 module_param(brl_timeout, uint, 0644);
870 static unsigned brl_nbchords = 1;
871 MODULE_PARM_DESC(brl_nbchords, "Number of chords that produce a braille pattern (0 for dead chords)");
872 module_param(brl_nbchords, uint, 0644);
874 static void k_brlcommit(struct vc_data *vc, unsigned int pattern, char up_flag)
876 static unsigned long chords;
877 static unsigned committed;
880 k_deadunicode(vc, BRL_UC_ROW | pattern, up_flag);
882 committed |= pattern;
884 if (chords == brl_nbchords) {
885 k_unicode(vc, BRL_UC_ROW | committed, up_flag);
892 static void k_brl(struct vc_data *vc, unsigned char value, char up_flag)
894 static unsigned pressed,committing;
895 static unsigned long releasestart;
897 if (kbd->kbdmode != VC_UNICODE) {
899 printk("keyboard mode must be unicode for braille patterns\n");
904 k_unicode(vc, BRL_UC_ROW, up_flag);
914 jiffies - releasestart > (brl_timeout * HZ) / 1000) {
915 committing = pressed;
916 releasestart = jiffies;
918 pressed &= ~(1 << (value - 1));
921 k_brlcommit(vc, committing, 0);
927 k_brlcommit(vc, committing, 0);
930 pressed &= ~(1 << (value - 1));
933 pressed |= 1 << (value - 1);
935 committing = pressed;
940 * The leds display either (i) the status of NumLock, CapsLock, ScrollLock,
941 * or (ii) whatever pattern of lights people want to show using KDSETLED,
942 * or (iii) specified bits of specified words in kernel memory.
944 unsigned char getledstate(void)
949 void setledstate(struct kbd_struct *kbd, unsigned int led)
953 kbd->ledmode = LED_SHOW_IOCTL;
955 kbd->ledmode = LED_SHOW_FLAGS;
959 static inline unsigned char getleds(void)
961 struct kbd_struct *kbd = kbd_table + fg_console;
965 if (kbd->ledmode == LED_SHOW_IOCTL)
968 leds = kbd->ledflagstate;
970 if (kbd->ledmode == LED_SHOW_MEM) {
971 for (i = 0; i < 3; i++)
972 if (ledptrs[i].valid) {
973 if (*ledptrs[i].addr & ledptrs[i].mask)
983 * This routine is the bottom half of the keyboard interrupt
984 * routine, and runs with all interrupts enabled. It does
985 * console changing, led setting and copy_to_cooked, which can
986 * take a reasonably long time.
988 * Aside from timing (which isn't really that important for
989 * keyboard interrupts as they happen often), using the software
990 * interrupt routines for this thing allows us to easily mask
991 * this when we don't want any of the above to happen.
992 * This allows for easy and efficient race-condition prevention
993 * for kbd_start => input_inject_event(dev, EV_LED, ...) => ...
996 static void kbd_bh(unsigned long dummy)
998 struct list_head *node;
999 unsigned char leds = getleds();
1001 if (leds != ledstate) {
1002 list_for_each(node, &kbd_handler.h_list) {
1003 struct input_handle *handle = to_handle_h(node);
1004 input_inject_event(handle, EV_LED, LED_SCROLLL, !!(leds & 0x01));
1005 input_inject_event(handle, EV_LED, LED_NUML, !!(leds & 0x02));
1006 input_inject_event(handle, EV_LED, LED_CAPSL, !!(leds & 0x04));
1007 input_inject_event(handle, EV_SYN, SYN_REPORT, 0);
1014 DECLARE_TASKLET_DISABLED(keyboard_tasklet, kbd_bh, 0);
1016 #if defined(CONFIG_X86) || defined(CONFIG_IA64) || defined(CONFIG_ALPHA) ||\
1017 defined(CONFIG_MIPS) || defined(CONFIG_PPC) || defined(CONFIG_SPARC) ||\
1018 defined(CONFIG_PARISC) || defined(CONFIG_SUPERH) ||\
1019 (defined(CONFIG_ARM) && defined(CONFIG_KEYBOARD_ATKBD) && !defined(CONFIG_ARCH_RPC))
1021 #define HW_RAW(dev) (test_bit(EV_MSC, dev->evbit) && test_bit(MSC_RAW, dev->mscbit) &&\
1022 ((dev)->id.bustype == BUS_I8042) && ((dev)->id.vendor == 0x0001) && ((dev)->id.product == 0x0001))
1024 static const unsigned short x86_keycodes[256] =
1025 { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,
1026 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31,
1027 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47,
1028 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63,
1029 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79,
1030 80, 81, 82, 83, 84,118, 86, 87, 88,115,120,119,121,112,123, 92,
1031 284,285,309, 0,312, 91,327,328,329,331,333,335,336,337,338,339,
1032 367,288,302,304,350, 89,334,326,267,126,268,269,125,347,348,349,
1033 360,261,262,263,268,376,100,101,321,316,373,286,289,102,351,355,
1034 103,104,105,275,287,279,306,106,274,107,294,364,358,363,362,361,
1035 291,108,381,281,290,272,292,305,280, 99,112,257,258,359,113,114,
1036 264,117,271,374,379,265,266, 93, 94, 95, 85,259,375,260, 90,116,
1037 377,109,111,277,278,282,283,295,296,297,299,300,301,293,303,307,
1038 308,310,313,314,315,317,318,319,320,357,322,323,324,325,276,330,
1039 332,340,365,342,343,344,345,346,356,270,341,368,369,370,371,372 };
1041 #ifdef CONFIG_MAC_EMUMOUSEBTN
1042 extern int mac_hid_mouse_emulate_buttons(int, int, int);
1043 #endif /* CONFIG_MAC_EMUMOUSEBTN */
1046 static int sparc_l1_a_state = 0;
1047 extern void sun_do_break(void);
1050 static int emulate_raw(struct vc_data *vc, unsigned int keycode,
1051 unsigned char up_flag)
1057 put_queue(vc, 0xe1);
1058 put_queue(vc, 0x1d | up_flag);
1059 put_queue(vc, 0x45 | up_flag);
1064 put_queue(vc, 0xf2);
1069 put_queue(vc, 0xf1);
1074 * Real AT keyboards (that's what we're trying
1075 * to emulate here emit 0xe0 0x2a 0xe0 0x37 when
1076 * pressing PrtSc/SysRq alone, but simply 0x54
1077 * when pressing Alt+PrtSc/SysRq.
1080 put_queue(vc, 0x54 | up_flag);
1082 put_queue(vc, 0xe0);
1083 put_queue(vc, 0x2a | up_flag);
1084 put_queue(vc, 0xe0);
1085 put_queue(vc, 0x37 | up_flag);
1093 code = x86_keycodes[keycode];
1098 put_queue(vc, 0xe0);
1099 put_queue(vc, (code & 0x7f) | up_flag);
1109 #define HW_RAW(dev) 0
1111 #warning "Cannot generate rawmode keyboard for your architecture yet."
1113 static int emulate_raw(struct vc_data *vc, unsigned int keycode, unsigned char up_flag)
1118 put_queue(vc, keycode | up_flag);
1123 static void kbd_rawcode(unsigned char data)
1125 struct vc_data *vc = vc_cons[fg_console].d;
1126 kbd = kbd_table + fg_console;
1127 if (kbd->kbdmode == VC_RAW)
1128 put_queue(vc, data);
1131 static void kbd_keycode(unsigned int keycode, int down, int hw_raw)
1133 struct vc_data *vc = vc_cons[fg_console].d;
1134 unsigned short keysym, *key_map;
1135 unsigned char type, raw_mode;
1136 struct tty_struct *tty;
1141 if (tty && (!tty->driver_data)) {
1142 /* No driver data? Strange. Okay we fix it then. */
1143 tty->driver_data = vc;
1146 kbd = kbd_table + fg_console;
1148 if (keycode == KEY_LEFTALT || keycode == KEY_RIGHTALT)
1149 sysrq_alt = down ? keycode : 0;
1151 if (keycode == KEY_STOP)
1152 sparc_l1_a_state = down;
1157 #ifdef CONFIG_MAC_EMUMOUSEBTN
1158 if (mac_hid_mouse_emulate_buttons(1, keycode, down))
1160 #endif /* CONFIG_MAC_EMUMOUSEBTN */
1162 if ((raw_mode = (kbd->kbdmode == VC_RAW)) && !hw_raw)
1163 if (emulate_raw(vc, keycode, !down << 7))
1164 if (keycode < BTN_MISC)
1165 printk(KERN_WARNING "keyboard.c: can't emulate rawmode for keycode %d\n", keycode);
1167 #ifdef CONFIG_MAGIC_SYSRQ /* Handle the SysRq Hack */
1168 if (keycode == KEY_SYSRQ && (sysrq_down || (down == 1 && sysrq_alt))) {
1171 sysrq_alt_use = sysrq_alt;
1175 if (sysrq_down && !down && keycode == sysrq_alt_use)
1177 if (sysrq_down && down && !rep) {
1178 handle_sysrq(kbd_sysrq_xlate[keycode], tty);
1183 if (keycode == KEY_A && sparc_l1_a_state) {
1184 sparc_l1_a_state = 0;
1189 if (kbd->kbdmode == VC_MEDIUMRAW) {
1191 * This is extended medium raw mode, with keys above 127
1192 * encoded as 0, high 7 bits, low 7 bits, with the 0 bearing
1193 * the 'up' flag if needed. 0 is reserved, so this shouldn't
1194 * interfere with anything else. The two bytes after 0 will
1195 * always have the up flag set not to interfere with older
1196 * applications. This allows for 16384 different keycodes,
1197 * which should be enough.
1199 if (keycode < 128) {
1200 put_queue(vc, keycode | (!down << 7));
1202 put_queue(vc, !down << 7);
1203 put_queue(vc, (keycode >> 7) | 0x80);
1204 put_queue(vc, keycode | 0x80);
1210 set_bit(keycode, key_down);
1212 clear_bit(keycode, key_down);
1215 (!vc_kbd_mode(kbd, VC_REPEAT) ||
1216 (tty && !L_ECHO(tty) && tty->driver->chars_in_buffer(tty)))) {
1218 * Don't repeat a key if the input buffers are not empty and the
1219 * characters get aren't echoed locally. This makes key repeat
1220 * usable with slow applications and under heavy loads.
1225 shift_final = (shift_state | kbd->slockstate) ^ kbd->lockstate;
1226 key_map = key_maps[shift_final];
1229 compute_shiftstate();
1230 kbd->slockstate = 0;
1234 if (keycode > NR_KEYS)
1235 if (keycode >= KEY_BRL_DOT1 && keycode <= KEY_BRL_DOT8)
1236 keysym = K(KT_BRL, keycode - KEY_BRL_DOT1 + 1);
1240 keysym = key_map[keycode];
1242 type = KTYP(keysym);
1245 if (down && !raw_mode)
1246 to_utf8(vc, keysym);
1252 if (raw_mode && type != KT_SPEC && type != KT_SHIFT)
1255 if (type == KT_LETTER) {
1257 if (vc_kbd_led(kbd, VC_CAPSLOCK)) {
1258 key_map = key_maps[shift_final ^ (1 << KG_SHIFT)];
1260 keysym = key_map[keycode];
1264 (*k_handler[type])(vc, keysym & 0xff, !down);
1266 if (type != KT_SLOCK)
1267 kbd->slockstate = 0;
1270 static void kbd_event(struct input_handle *handle, unsigned int event_type,
1271 unsigned int event_code, int value)
1273 if (event_type == EV_MSC && event_code == MSC_RAW && HW_RAW(handle->dev))
1275 if (event_type == EV_KEY)
1276 kbd_keycode(event_code, value, HW_RAW(handle->dev));
1277 tasklet_schedule(&keyboard_tasklet);
1278 do_poke_blanked_console = 1;
1279 schedule_console_callback();
1283 * When a keyboard (or other input device) is found, the kbd_connect
1284 * function is called. The function then looks at the device, and if it
1285 * likes it, it can open it and get events from it. In this (kbd_connect)
1286 * function, we should decide which VT to bind that keyboard to initially.
1288 static struct input_handle *kbd_connect(struct input_handler *handler,
1289 struct input_dev *dev,
1290 const struct input_device_id *id)
1292 struct input_handle *handle;
1295 for (i = KEY_RESERVED; i < BTN_MISC; i++)
1296 if (test_bit(i, dev->keybit))
1299 if (i == BTN_MISC && !test_bit(EV_SND, dev->evbit))
1302 handle = kzalloc(sizeof(struct input_handle), GFP_KERNEL);
1307 handle->handler = handler;
1308 handle->name = "kbd";
1310 input_open_device(handle);
1315 static void kbd_disconnect(struct input_handle *handle)
1317 input_close_device(handle);
1322 * Start keyboard handler on the new keyboard by refreshing LED state to
1323 * match the rest of the system.
1325 static void kbd_start(struct input_handle *handle)
1327 unsigned char leds = ledstate;
1329 tasklet_disable(&keyboard_tasklet);
1331 input_inject_event(handle, EV_LED, LED_SCROLLL, !!(leds & 0x01));
1332 input_inject_event(handle, EV_LED, LED_NUML, !!(leds & 0x02));
1333 input_inject_event(handle, EV_LED, LED_CAPSL, !!(leds & 0x04));
1334 input_inject_event(handle, EV_SYN, SYN_REPORT, 0);
1336 tasklet_enable(&keyboard_tasklet);
1339 static const struct input_device_id kbd_ids[] = {
1341 .flags = INPUT_DEVICE_ID_MATCH_EVBIT,
1342 .evbit = { BIT(EV_KEY) },
1346 .flags = INPUT_DEVICE_ID_MATCH_EVBIT,
1347 .evbit = { BIT(EV_SND) },
1350 { }, /* Terminating entry */
1353 MODULE_DEVICE_TABLE(input, kbd_ids);
1355 static struct input_handler kbd_handler = {
1357 .connect = kbd_connect,
1358 .disconnect = kbd_disconnect,
1361 .id_table = kbd_ids,
1364 int __init kbd_init(void)
1369 for (i = 0; i < MAX_NR_CONSOLES; i++) {
1370 kbd_table[i].ledflagstate = KBD_DEFLEDS;
1371 kbd_table[i].default_ledflagstate = KBD_DEFLEDS;
1372 kbd_table[i].ledmode = LED_SHOW_FLAGS;
1373 kbd_table[i].lockstate = KBD_DEFLOCK;
1374 kbd_table[i].slockstate = 0;
1375 kbd_table[i].modeflags = KBD_DEFMODE;
1376 kbd_table[i].kbdmode = VC_XLATE;
1379 error = input_register_handler(&kbd_handler);
1383 tasklet_enable(&keyboard_tasklet);
1384 tasklet_schedule(&keyboard_tasklet);