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 tty_struct *tty = vc->vc_tty;
601 * SAK should also work in all raw modes and reset
609 static void fn_null(struct vc_data *vc)
611 compute_shiftstate();
615 * Special key handlers
617 static void k_ignore(struct vc_data *vc, unsigned char value, char up_flag)
621 static void k_spec(struct vc_data *vc, unsigned char value, char up_flag)
625 if (value >= ARRAY_SIZE(fn_handler))
627 if ((kbd->kbdmode == VC_RAW ||
628 kbd->kbdmode == VC_MEDIUMRAW) &&
629 value != KVAL(K_SAK))
630 return; /* SAK is allowed even in raw mode */
631 fn_handler[value](vc);
634 static void k_lowercase(struct vc_data *vc, unsigned char value, char up_flag)
636 printk(KERN_ERR "keyboard.c: k_lowercase was called - impossible\n");
639 static void k_unicode(struct vc_data *vc, unsigned int value, char up_flag)
642 return; /* no action, if this is a key release */
645 value = handle_diacr(vc, value);
652 if (kbd->kbdmode == VC_UNICODE)
654 else if (value < 0x100)
655 put_queue(vc, value);
659 * Handle dead key. Note that we now may have several
660 * dead keys modifying the same character. Very useful
663 static void k_deadunicode(struct vc_data *vc, unsigned int value, char up_flag)
667 diacr = (diacr ? handle_diacr(vc, value) : value);
670 static void k_self(struct vc_data *vc, unsigned char value, char up_flag)
672 k_unicode(vc, value, up_flag);
675 static void k_dead2(struct vc_data *vc, unsigned char value, char up_flag)
677 k_deadunicode(vc, value, up_flag);
681 * Obsolete - for backwards compatibility only
683 static void k_dead(struct vc_data *vc, unsigned char value, char up_flag)
685 static const unsigned char ret_diacr[NR_DEAD] = {'`', '\'', '^', '~', '"', ',' };
686 value = ret_diacr[value];
687 k_deadunicode(vc, value, up_flag);
690 static void k_cons(struct vc_data *vc, unsigned char value, char up_flag)
697 static void k_fn(struct vc_data *vc, unsigned char value, char up_flag)
704 if (v < ARRAY_SIZE(func_table)) {
705 if (func_table[value])
706 puts_queue(vc, func_table[value]);
708 printk(KERN_ERR "k_fn called with value=%d\n", value);
711 static void k_cur(struct vc_data *vc, unsigned char value, char up_flag)
713 static const char cur_chars[] = "BDCA";
717 applkey(vc, cur_chars[value], vc_kbd_mode(kbd, VC_CKMODE));
720 static void k_pad(struct vc_data *vc, unsigned char value, char up_flag)
722 static const char pad_chars[] = "0123456789+-*/\015,.?()#";
723 static const char app_map[] = "pqrstuvwxylSRQMnnmPQS";
726 return; /* no action, if this is a key release */
728 /* kludge... shift forces cursor/number keys */
729 if (vc_kbd_mode(kbd, VC_APPLIC) && !shift_down[KG_SHIFT]) {
730 applkey(vc, app_map[value], 1);
734 if (!vc_kbd_led(kbd, VC_NUMLOCK))
738 k_fn(vc, KVAL(K_REMOVE), 0);
741 k_fn(vc, KVAL(K_INSERT), 0);
744 k_fn(vc, KVAL(K_SELECT), 0);
747 k_cur(vc, KVAL(K_DOWN), 0);
750 k_fn(vc, KVAL(K_PGDN), 0);
753 k_cur(vc, KVAL(K_LEFT), 0);
756 k_cur(vc, KVAL(K_RIGHT), 0);
759 k_fn(vc, KVAL(K_FIND), 0);
762 k_cur(vc, KVAL(K_UP), 0);
765 k_fn(vc, KVAL(K_PGUP), 0);
768 applkey(vc, 'G', vc_kbd_mode(kbd, VC_APPLIC));
772 put_queue(vc, pad_chars[value]);
773 if (value == KVAL(K_PENTER) && vc_kbd_mode(kbd, VC_CRLF))
777 static void k_shift(struct vc_data *vc, unsigned char value, char up_flag)
779 int old_state = shift_state;
785 * a CapsShift key acts like Shift but undoes CapsLock
787 if (value == KVAL(K_CAPSSHIFT)) {
788 value = KVAL(K_SHIFT);
790 clr_vc_kbd_led(kbd, VC_CAPSLOCK);
795 * handle the case that two shift or control
796 * keys are depressed simultaneously
798 if (shift_down[value])
803 if (shift_down[value])
804 shift_state |= (1 << value);
806 shift_state &= ~(1 << value);
809 if (up_flag && shift_state != old_state && npadch != -1) {
810 if (kbd->kbdmode == VC_UNICODE)
811 to_utf8(vc, npadch & 0xffff);
813 put_queue(vc, npadch & 0xff);
818 static void k_meta(struct vc_data *vc, unsigned char value, char up_flag)
823 if (vc_kbd_mode(kbd, VC_META)) {
824 put_queue(vc, '\033');
825 put_queue(vc, value);
827 put_queue(vc, value | 0x80);
830 static void k_ascii(struct vc_data *vc, unsigned char value, char up_flag)
838 /* decimal input of code, while Alt depressed */
841 /* hexadecimal input of code, while AltGr depressed */
849 npadch = npadch * base + value;
852 static void k_lock(struct vc_data *vc, unsigned char value, char up_flag)
856 chg_vc_kbd_lock(kbd, value);
859 static void k_slock(struct vc_data *vc, unsigned char value, char up_flag)
861 k_shift(vc, value, up_flag);
864 chg_vc_kbd_slock(kbd, value);
865 /* try to make Alt, oops, AltGr and such work */
866 if (!key_maps[kbd->lockstate ^ kbd->slockstate]) {
868 chg_vc_kbd_slock(kbd, value);
872 /* by default, 300ms interval for combination release */
873 static unsigned brl_timeout = 300;
874 MODULE_PARM_DESC(brl_timeout, "Braille keys release delay in ms (0 for commit on first key release)");
875 module_param(brl_timeout, uint, 0644);
877 static unsigned brl_nbchords = 1;
878 MODULE_PARM_DESC(brl_nbchords, "Number of chords that produce a braille pattern (0 for dead chords)");
879 module_param(brl_nbchords, uint, 0644);
881 static void k_brlcommit(struct vc_data *vc, unsigned int pattern, char up_flag)
883 static unsigned long chords;
884 static unsigned committed;
887 k_deadunicode(vc, BRL_UC_ROW | pattern, up_flag);
889 committed |= pattern;
891 if (chords == brl_nbchords) {
892 k_unicode(vc, BRL_UC_ROW | committed, up_flag);
899 static void k_brl(struct vc_data *vc, unsigned char value, char up_flag)
901 static unsigned pressed,committing;
902 static unsigned long releasestart;
904 if (kbd->kbdmode != VC_UNICODE) {
906 printk("keyboard mode must be unicode for braille patterns\n");
911 k_unicode(vc, BRL_UC_ROW, up_flag);
921 jiffies - releasestart > (brl_timeout * HZ) / 1000) {
922 committing = pressed;
923 releasestart = jiffies;
925 pressed &= ~(1 << (value - 1));
928 k_brlcommit(vc, committing, 0);
934 k_brlcommit(vc, committing, 0);
937 pressed &= ~(1 << (value - 1));
940 pressed |= 1 << (value - 1);
942 committing = pressed;
947 * The leds display either (i) the status of NumLock, CapsLock, ScrollLock,
948 * or (ii) whatever pattern of lights people want to show using KDSETLED,
949 * or (iii) specified bits of specified words in kernel memory.
951 unsigned char getledstate(void)
956 void setledstate(struct kbd_struct *kbd, unsigned int led)
960 kbd->ledmode = LED_SHOW_IOCTL;
962 kbd->ledmode = LED_SHOW_FLAGS;
966 static inline unsigned char getleds(void)
968 struct kbd_struct *kbd = kbd_table + fg_console;
972 if (kbd->ledmode == LED_SHOW_IOCTL)
975 leds = kbd->ledflagstate;
977 if (kbd->ledmode == LED_SHOW_MEM) {
978 for (i = 0; i < 3; i++)
979 if (ledptrs[i].valid) {
980 if (*ledptrs[i].addr & ledptrs[i].mask)
990 * This routine is the bottom half of the keyboard interrupt
991 * routine, and runs with all interrupts enabled. It does
992 * console changing, led setting and copy_to_cooked, which can
993 * take a reasonably long time.
995 * Aside from timing (which isn't really that important for
996 * keyboard interrupts as they happen often), using the software
997 * interrupt routines for this thing allows us to easily mask
998 * this when we don't want any of the above to happen.
999 * This allows for easy and efficient race-condition prevention
1000 * for kbd_start => input_inject_event(dev, EV_LED, ...) => ...
1003 static void kbd_bh(unsigned long dummy)
1005 struct list_head *node;
1006 unsigned char leds = getleds();
1008 if (leds != ledstate) {
1009 list_for_each(node, &kbd_handler.h_list) {
1010 struct input_handle *handle = to_handle_h(node);
1011 input_inject_event(handle, EV_LED, LED_SCROLLL, !!(leds & 0x01));
1012 input_inject_event(handle, EV_LED, LED_NUML, !!(leds & 0x02));
1013 input_inject_event(handle, EV_LED, LED_CAPSL, !!(leds & 0x04));
1014 input_inject_event(handle, EV_SYN, SYN_REPORT, 0);
1021 DECLARE_TASKLET_DISABLED(keyboard_tasklet, kbd_bh, 0);
1023 #if defined(CONFIG_X86) || defined(CONFIG_IA64) || defined(CONFIG_ALPHA) ||\
1024 defined(CONFIG_MIPS) || defined(CONFIG_PPC) || defined(CONFIG_SPARC) ||\
1025 defined(CONFIG_PARISC) || defined(CONFIG_SUPERH) ||\
1026 (defined(CONFIG_ARM) && defined(CONFIG_KEYBOARD_ATKBD) && !defined(CONFIG_ARCH_RPC))
1028 #define HW_RAW(dev) (test_bit(EV_MSC, dev->evbit) && test_bit(MSC_RAW, dev->mscbit) &&\
1029 ((dev)->id.bustype == BUS_I8042) && ((dev)->id.vendor == 0x0001) && ((dev)->id.product == 0x0001))
1031 static const unsigned short x86_keycodes[256] =
1032 { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,
1033 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31,
1034 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47,
1035 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63,
1036 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79,
1037 80, 81, 82, 83, 84,118, 86, 87, 88,115,120,119,121,112,123, 92,
1038 284,285,309, 0,312, 91,327,328,329,331,333,335,336,337,338,339,
1039 367,288,302,304,350, 89,334,326,267,126,268,269,125,347,348,349,
1040 360,261,262,263,268,376,100,101,321,316,373,286,289,102,351,355,
1041 103,104,105,275,287,279,306,106,274,107,294,364,358,363,362,361,
1042 291,108,381,281,290,272,292,305,280, 99,112,257,258,359,113,114,
1043 264,117,271,374,379,265,266, 93, 94, 95, 85,259,375,260, 90,116,
1044 377,109,111,277,278,282,283,295,296,297,299,300,301,293,303,307,
1045 308,310,313,314,315,317,318,319,320,357,322,323,324,325,276,330,
1046 332,340,365,342,343,344,345,346,356,270,341,368,369,370,371,372 };
1048 #ifdef CONFIG_MAC_EMUMOUSEBTN
1049 extern int mac_hid_mouse_emulate_buttons(int, int, int);
1050 #endif /* CONFIG_MAC_EMUMOUSEBTN */
1053 static int sparc_l1_a_state = 0;
1054 extern void sun_do_break(void);
1057 static int emulate_raw(struct vc_data *vc, unsigned int keycode,
1058 unsigned char up_flag)
1064 put_queue(vc, 0xe1);
1065 put_queue(vc, 0x1d | up_flag);
1066 put_queue(vc, 0x45 | up_flag);
1071 put_queue(vc, 0xf2);
1076 put_queue(vc, 0xf1);
1081 * Real AT keyboards (that's what we're trying
1082 * to emulate here emit 0xe0 0x2a 0xe0 0x37 when
1083 * pressing PrtSc/SysRq alone, but simply 0x54
1084 * when pressing Alt+PrtSc/SysRq.
1087 put_queue(vc, 0x54 | up_flag);
1089 put_queue(vc, 0xe0);
1090 put_queue(vc, 0x2a | up_flag);
1091 put_queue(vc, 0xe0);
1092 put_queue(vc, 0x37 | up_flag);
1100 code = x86_keycodes[keycode];
1105 put_queue(vc, 0xe0);
1106 put_queue(vc, (code & 0x7f) | up_flag);
1116 #define HW_RAW(dev) 0
1118 #warning "Cannot generate rawmode keyboard for your architecture yet."
1120 static int emulate_raw(struct vc_data *vc, unsigned int keycode, unsigned char up_flag)
1125 put_queue(vc, keycode | up_flag);
1130 static void kbd_rawcode(unsigned char data)
1132 struct vc_data *vc = vc_cons[fg_console].d;
1133 kbd = kbd_table + fg_console;
1134 if (kbd->kbdmode == VC_RAW)
1135 put_queue(vc, data);
1138 static void kbd_keycode(unsigned int keycode, int down, int hw_raw)
1140 struct vc_data *vc = vc_cons[fg_console].d;
1141 unsigned short keysym, *key_map;
1142 unsigned char type, raw_mode;
1143 struct tty_struct *tty;
1148 if (tty && (!tty->driver_data)) {
1149 /* No driver data? Strange. Okay we fix it then. */
1150 tty->driver_data = vc;
1153 kbd = kbd_table + fg_console;
1155 if (keycode == KEY_LEFTALT || keycode == KEY_RIGHTALT)
1156 sysrq_alt = down ? keycode : 0;
1158 if (keycode == KEY_STOP)
1159 sparc_l1_a_state = down;
1164 #ifdef CONFIG_MAC_EMUMOUSEBTN
1165 if (mac_hid_mouse_emulate_buttons(1, keycode, down))
1167 #endif /* CONFIG_MAC_EMUMOUSEBTN */
1169 if ((raw_mode = (kbd->kbdmode == VC_RAW)) && !hw_raw)
1170 if (emulate_raw(vc, keycode, !down << 7))
1171 if (keycode < BTN_MISC)
1172 printk(KERN_WARNING "keyboard.c: can't emulate rawmode for keycode %d\n", keycode);
1174 #ifdef CONFIG_MAGIC_SYSRQ /* Handle the SysRq Hack */
1175 if (keycode == KEY_SYSRQ && (sysrq_down || (down == 1 && sysrq_alt))) {
1178 sysrq_alt_use = sysrq_alt;
1182 if (sysrq_down && !down && keycode == sysrq_alt_use)
1184 if (sysrq_down && down && !rep) {
1185 handle_sysrq(kbd_sysrq_xlate[keycode], tty);
1190 if (keycode == KEY_A && sparc_l1_a_state) {
1191 sparc_l1_a_state = 0;
1196 if (kbd->kbdmode == VC_MEDIUMRAW) {
1198 * This is extended medium raw mode, with keys above 127
1199 * encoded as 0, high 7 bits, low 7 bits, with the 0 bearing
1200 * the 'up' flag if needed. 0 is reserved, so this shouldn't
1201 * interfere with anything else. The two bytes after 0 will
1202 * always have the up flag set not to interfere with older
1203 * applications. This allows for 16384 different keycodes,
1204 * which should be enough.
1206 if (keycode < 128) {
1207 put_queue(vc, keycode | (!down << 7));
1209 put_queue(vc, !down << 7);
1210 put_queue(vc, (keycode >> 7) | 0x80);
1211 put_queue(vc, keycode | 0x80);
1217 set_bit(keycode, key_down);
1219 clear_bit(keycode, key_down);
1222 (!vc_kbd_mode(kbd, VC_REPEAT) ||
1223 (tty && !L_ECHO(tty) && tty->driver->chars_in_buffer(tty)))) {
1225 * Don't repeat a key if the input buffers are not empty and the
1226 * characters get aren't echoed locally. This makes key repeat
1227 * usable with slow applications and under heavy loads.
1232 shift_final = (shift_state | kbd->slockstate) ^ kbd->lockstate;
1233 key_map = key_maps[shift_final];
1236 compute_shiftstate();
1237 kbd->slockstate = 0;
1241 if (keycode > NR_KEYS)
1242 if (keycode >= KEY_BRL_DOT1 && keycode <= KEY_BRL_DOT8)
1243 keysym = K(KT_BRL, keycode - KEY_BRL_DOT1 + 1);
1247 keysym = key_map[keycode];
1249 type = KTYP(keysym);
1252 if (down && !raw_mode)
1253 to_utf8(vc, keysym);
1259 if (raw_mode && type != KT_SPEC && type != KT_SHIFT)
1262 if (type == KT_LETTER) {
1264 if (vc_kbd_led(kbd, VC_CAPSLOCK)) {
1265 key_map = key_maps[shift_final ^ (1 << KG_SHIFT)];
1267 keysym = key_map[keycode];
1271 (*k_handler[type])(vc, keysym & 0xff, !down);
1273 if (type != KT_SLOCK)
1274 kbd->slockstate = 0;
1277 static void kbd_event(struct input_handle *handle, unsigned int event_type,
1278 unsigned int event_code, int value)
1280 if (event_type == EV_MSC && event_code == MSC_RAW && HW_RAW(handle->dev))
1282 if (event_type == EV_KEY)
1283 kbd_keycode(event_code, value, HW_RAW(handle->dev));
1284 tasklet_schedule(&keyboard_tasklet);
1285 do_poke_blanked_console = 1;
1286 schedule_console_callback();
1290 * When a keyboard (or other input device) is found, the kbd_connect
1291 * function is called. The function then looks at the device, and if it
1292 * likes it, it can open it and get events from it. In this (kbd_connect)
1293 * function, we should decide which VT to bind that keyboard to initially.
1295 static struct input_handle *kbd_connect(struct input_handler *handler,
1296 struct input_dev *dev,
1297 const struct input_device_id *id)
1299 struct input_handle *handle;
1302 for (i = KEY_RESERVED; i < BTN_MISC; i++)
1303 if (test_bit(i, dev->keybit))
1306 if (i == BTN_MISC && !test_bit(EV_SND, dev->evbit))
1309 handle = kzalloc(sizeof(struct input_handle), GFP_KERNEL);
1314 handle->handler = handler;
1315 handle->name = "kbd";
1317 input_open_device(handle);
1322 static void kbd_disconnect(struct input_handle *handle)
1324 input_close_device(handle);
1329 * Start keyboard handler on the new keyboard by refreshing LED state to
1330 * match the rest of the system.
1332 static void kbd_start(struct input_handle *handle)
1334 unsigned char leds = ledstate;
1336 tasklet_disable(&keyboard_tasklet);
1338 input_inject_event(handle, EV_LED, LED_SCROLLL, !!(leds & 0x01));
1339 input_inject_event(handle, EV_LED, LED_NUML, !!(leds & 0x02));
1340 input_inject_event(handle, EV_LED, LED_CAPSL, !!(leds & 0x04));
1341 input_inject_event(handle, EV_SYN, SYN_REPORT, 0);
1343 tasklet_enable(&keyboard_tasklet);
1346 static const struct input_device_id kbd_ids[] = {
1348 .flags = INPUT_DEVICE_ID_MATCH_EVBIT,
1349 .evbit = { BIT(EV_KEY) },
1353 .flags = INPUT_DEVICE_ID_MATCH_EVBIT,
1354 .evbit = { BIT(EV_SND) },
1357 { }, /* Terminating entry */
1360 MODULE_DEVICE_TABLE(input, kbd_ids);
1362 static struct input_handler kbd_handler = {
1364 .connect = kbd_connect,
1365 .disconnect = kbd_disconnect,
1368 .id_table = kbd_ids,
1371 int __init kbd_init(void)
1376 for (i = 0; i < MAX_NR_CONSOLES; i++) {
1377 kbd_table[i].ledflagstate = KBD_DEFLEDS;
1378 kbd_table[i].default_ledflagstate = KBD_DEFLEDS;
1379 kbd_table[i].ledmode = LED_SHOW_FLAGS;
1380 kbd_table[i].lockstate = KBD_DEFLOCK;
1381 kbd_table[i].slockstate = 0;
1382 kbd_table[i].modeflags = KBD_DEFMODE;
1383 kbd_table[i].kbdmode = VC_XLATE;
1386 error = input_register_handler(&kbd_handler);
1390 tasklet_enable(&keyboard_tasklet);
1391 tasklet_schedule(&keyboard_tasklet);