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>
36 #include <linux/kbd_kern.h>
37 #include <linux/kbd_diacr.h>
38 #include <linux/vt_kern.h>
39 #include <linux/sysrq.h>
40 #include <linux/input.h>
41 #include <linux/reboot.h>
43 static void kbd_disconnect(struct input_handle *handle);
44 extern void ctrl_alt_del(void);
47 * Exported functions/variables
50 #define KBD_DEFMODE ((1 << VC_REPEAT) | (1 << VC_META))
53 * Some laptops take the 789uiojklm,. keys as number pad when NumLock is on.
54 * This seems a good reason to start with NumLock off. On HIL keyboards
55 * of PARISC machines however there is no NumLock key and everyone expects the keypad
56 * to be used for numbers.
59 #if defined(CONFIG_PARISC) && (defined(CONFIG_KEYBOARD_HIL) || defined(CONFIG_KEYBOARD_HIL_OLD))
60 #define KBD_DEFLEDS (1 << VC_NUMLOCK)
67 void compute_shiftstate(void);
74 k_self, k_fn, k_spec, k_pad,\
75 k_dead, k_cons, k_cur, k_shift,\
76 k_meta, k_ascii, k_lock, k_lowercase,\
77 k_slock, k_dead2, k_brl, k_ignore
79 typedef void (k_handler_fn)(struct vc_data *vc, unsigned char value,
80 char up_flag, struct pt_regs *regs);
81 static k_handler_fn K_HANDLERS;
82 static k_handler_fn *k_handler[16] = { K_HANDLERS };
85 fn_null, fn_enter, fn_show_ptregs, fn_show_mem,\
86 fn_show_state, fn_send_intr, fn_lastcons, fn_caps_toggle,\
87 fn_num, fn_hold, fn_scroll_forw, fn_scroll_back,\
88 fn_boot_it, fn_caps_on, fn_compose, fn_SAK,\
89 fn_dec_console, fn_inc_console, fn_spawn_con, fn_bare_num
91 typedef void (fn_handler_fn)(struct vc_data *vc, struct pt_regs *regs);
92 static fn_handler_fn FN_HANDLERS;
93 static fn_handler_fn *fn_handler[] = { FN_HANDLERS };
96 * Variables exported for vt_ioctl.c
99 /* maximum values each key_handler can handle */
100 const int max_vals[] = {
101 255, ARRAY_SIZE(func_table) - 1, ARRAY_SIZE(fn_handler) - 1, NR_PAD - 1,
102 NR_DEAD - 1, 255, 3, NR_SHIFT - 1, 255, NR_ASCII - 1, NR_LOCK - 1,
103 255, NR_LOCK - 1, 255, NR_BRL - 1
106 const int NR_TYPES = ARRAY_SIZE(max_vals);
108 struct kbd_struct kbd_table[MAX_NR_CONSOLES];
109 static struct kbd_struct *kbd = kbd_table;
111 int spawnpid, spawnsig;
114 * Variables exported for vt.c
123 static struct input_handler kbd_handler;
124 static unsigned long key_down[NBITS(KEY_MAX)]; /* keyboard key bitmap */
125 static unsigned char shift_down[NR_SHIFT]; /* shift state counters.. */
126 static int dead_key_next;
127 static int npadch = -1; /* -1 or number assembled on pad */
128 static unsigned int diacr;
129 static char rep; /* flag telling character repeat */
131 static unsigned char ledstate = 0xff; /* undefined */
132 static unsigned char ledioctl;
134 static struct ledptr {
137 unsigned char valid:1;
140 /* Simple translation table for the SysRq keys */
142 #ifdef CONFIG_MAGIC_SYSRQ
143 unsigned char kbd_sysrq_xlate[KEY_MAX + 1] =
144 "\000\0331234567890-=\177\t" /* 0x00 - 0x0f */
145 "qwertyuiop[]\r\000as" /* 0x10 - 0x1f */
146 "dfghjkl;'`\000\\zxcv" /* 0x20 - 0x2f */
147 "bnm,./\000*\000 \000\201\202\203\204\205" /* 0x30 - 0x3f */
148 "\206\207\210\211\212\000\000789-456+1" /* 0x40 - 0x4f */
149 "230\177\000\000\213\214\000\000\000\000\000\000\000\000\000\000" /* 0x50 - 0x5f */
150 "\r\000/"; /* 0x60 - 0x6f */
151 static int sysrq_down;
152 static int sysrq_alt_use;
154 static int sysrq_alt;
157 * Translation of scancodes to keycodes. We set them on only the first attached
158 * keyboard - for per-keyboard setting, /dev/input/event is more useful.
160 int getkeycode(unsigned int scancode)
162 struct list_head *node;
163 struct input_dev *dev = NULL;
165 list_for_each(node, &kbd_handler.h_list) {
166 struct input_handle *handle = to_handle_h(node);
167 if (handle->dev->keycodesize) {
176 if (scancode >= dev->keycodemax)
179 return INPUT_KEYCODE(dev, scancode);
182 int setkeycode(unsigned int scancode, unsigned int keycode)
184 struct list_head *node;
185 struct input_dev *dev = NULL;
186 unsigned int i, oldkey;
188 list_for_each(node, &kbd_handler.h_list) {
189 struct input_handle *handle = to_handle_h(node);
190 if (handle->dev->keycodesize) {
199 if (scancode >= dev->keycodemax)
201 if (keycode < 0 || keycode > KEY_MAX)
203 if (dev->keycodesize < sizeof(keycode) && (keycode >> (dev->keycodesize * 8)))
206 oldkey = SET_INPUT_KEYCODE(dev, scancode, keycode);
208 clear_bit(oldkey, dev->keybit);
209 set_bit(keycode, dev->keybit);
211 for (i = 0; i < dev->keycodemax; i++)
212 if (INPUT_KEYCODE(dev,i) == oldkey)
213 set_bit(oldkey, dev->keybit);
219 * Making beeps and bells.
221 static void kd_nosound(unsigned long ignored)
223 struct list_head *node;
225 list_for_each(node, &kbd_handler.h_list) {
226 struct input_handle *handle = to_handle_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
332 * in utf-8 already. UTF-8 is defined for words of up to 31 bits,
333 * but we need only 16 bits here
335 static void to_utf8(struct vc_data *vc, ushort c)
340 else if (c < 0x800) {
341 /* 110***** 10****** */
342 put_queue(vc, 0xc0 | (c >> 6));
343 put_queue(vc, 0x80 | (c & 0x3f));
345 /* 1110**** 10****** 10****** */
346 put_queue(vc, 0xe0 | (c >> 12));
347 put_queue(vc, 0x80 | ((c >> 6) & 0x3f));
348 put_queue(vc, 0x80 | (c & 0x3f));
353 * Called after returning from RAW mode or when changing consoles - recompute
354 * shift_down[] and shift_state from key_down[] maybe called when keymap is
355 * undefined, so that shiftkey release is seen
357 void compute_shiftstate(void)
359 unsigned int i, j, k, sym, val;
362 memset(shift_down, 0, sizeof(shift_down));
364 for (i = 0; i < ARRAY_SIZE(key_down); i++) {
369 k = i * BITS_PER_LONG;
371 for (j = 0; j < BITS_PER_LONG; j++, k++) {
373 if (!test_bit(k, key_down))
376 sym = U(key_maps[0][k]);
377 if (KTYP(sym) != KT_SHIFT && KTYP(sym) != KT_SLOCK)
381 if (val == KVAL(K_CAPSSHIFT))
385 shift_state |= (1 << val);
391 * We have a combining character DIACR here, followed by the character CH.
392 * If the combination occurs in the table, return the corresponding value.
393 * Otherwise, if CH is a space or equals DIACR, return DIACR.
394 * Otherwise, conclude that DIACR was not combining after all,
395 * queue it and return CH.
397 static unsigned int handle_diacr(struct vc_data *vc, unsigned int ch)
399 unsigned int d = diacr;
404 if ((d & ~0xff) == BRL_UC_ROW) {
405 if ((ch & ~0xff) == BRL_UC_ROW)
408 for (i = 0; i < accent_table_size; i++)
409 if (accent_table[i].diacr == d && accent_table[i].base == ch)
410 return accent_table[i].result;
413 if (ch == ' ' || ch == (BRL_UC_ROW|0) || ch == d)
416 if (kbd->kbdmode == VC_UNICODE)
425 * Special function handlers
427 static void fn_enter(struct vc_data *vc, struct pt_regs *regs)
430 if (kbd->kbdmode == VC_UNICODE)
432 else if (diacr < 0x100)
433 put_queue(vc, diacr);
437 if (vc_kbd_mode(kbd, VC_CRLF))
441 static void fn_caps_toggle(struct vc_data *vc, struct pt_regs *regs)
445 chg_vc_kbd_led(kbd, VC_CAPSLOCK);
448 static void fn_caps_on(struct vc_data *vc, struct pt_regs *regs)
452 set_vc_kbd_led(kbd, VC_CAPSLOCK);
455 static void fn_show_ptregs(struct vc_data *vc, struct pt_regs *regs)
461 static void fn_hold(struct vc_data *vc, struct pt_regs *regs)
463 struct tty_struct *tty = vc->vc_tty;
469 * Note: SCROLLOCK will be set (cleared) by stop_tty (start_tty);
470 * these routines are also activated by ^S/^Q.
471 * (And SCROLLOCK can also be set by the ioctl KDSKBLED.)
479 static void fn_num(struct vc_data *vc, struct pt_regs *regs)
481 if (vc_kbd_mode(kbd,VC_APPLIC))
484 fn_bare_num(vc, regs);
488 * Bind this to Shift-NumLock if you work in application keypad mode
489 * but want to be able to change the NumLock flag.
490 * Bind this to NumLock if you prefer that the NumLock key always
491 * changes the NumLock flag.
493 static void fn_bare_num(struct vc_data *vc, struct pt_regs *regs)
496 chg_vc_kbd_led(kbd, VC_NUMLOCK);
499 static void fn_lastcons(struct vc_data *vc, struct pt_regs *regs)
501 /* switch to the last used console, ChN */
502 set_console(last_console);
505 static void fn_dec_console(struct vc_data *vc, struct pt_regs *regs)
507 int i, cur = fg_console;
509 /* Currently switching? Queue this next switch relative to that. */
510 if (want_console != -1)
513 for (i = cur - 1; i != cur; i--) {
515 i = MAX_NR_CONSOLES - 1;
516 if (vc_cons_allocated(i))
522 static void fn_inc_console(struct vc_data *vc, struct pt_regs *regs)
524 int i, cur = fg_console;
526 /* Currently switching? Queue this next switch relative to that. */
527 if (want_console != -1)
530 for (i = cur+1; i != cur; i++) {
531 if (i == MAX_NR_CONSOLES)
533 if (vc_cons_allocated(i))
539 static void fn_send_intr(struct vc_data *vc, struct pt_regs *regs)
541 struct tty_struct *tty = vc->vc_tty;
545 tty_insert_flip_char(tty, 0, TTY_BREAK);
546 con_schedule_flip(tty);
549 static void fn_scroll_forw(struct vc_data *vc, struct pt_regs *regs)
554 static void fn_scroll_back(struct vc_data *vc, struct pt_regs *regs)
559 static void fn_show_mem(struct vc_data *vc, struct pt_regs *regs)
564 static void fn_show_state(struct vc_data *vc, struct pt_regs *regs)
569 static void fn_boot_it(struct vc_data *vc, struct pt_regs *regs)
574 static void fn_compose(struct vc_data *vc, struct pt_regs *regs)
579 static void fn_spawn_con(struct vc_data *vc, struct pt_regs *regs)
582 if (kill_proc(spawnpid, spawnsig, 1))
586 static void fn_SAK(struct vc_data *vc, struct pt_regs *regs)
588 struct tty_struct *tty = vc->vc_tty;
591 * SAK should also work in all raw modes and reset
599 static void fn_null(struct vc_data *vc, struct pt_regs *regs)
601 compute_shiftstate();
605 * Special key handlers
607 static void k_ignore(struct vc_data *vc, unsigned char value, char up_flag, struct pt_regs *regs)
611 static void k_spec(struct vc_data *vc, unsigned char value, char up_flag, struct pt_regs *regs)
615 if (value >= ARRAY_SIZE(fn_handler))
617 if ((kbd->kbdmode == VC_RAW ||
618 kbd->kbdmode == VC_MEDIUMRAW) &&
619 value != KVAL(K_SAK))
620 return; /* SAK is allowed even in raw mode */
621 fn_handler[value](vc, regs);
624 static void k_lowercase(struct vc_data *vc, unsigned char value, char up_flag, struct pt_regs *regs)
626 printk(KERN_ERR "keyboard.c: k_lowercase was called - impossible\n");
629 static void k_unicode(struct vc_data *vc, unsigned int value, char up_flag, struct pt_regs *regs)
632 return; /* no action, if this is a key release */
635 value = handle_diacr(vc, value);
642 if (kbd->kbdmode == VC_UNICODE)
644 else if (value < 0x100)
645 put_queue(vc, value);
649 * Handle dead key. Note that we now may have several
650 * dead keys modifying the same character. Very useful
653 static void k_deadunicode(struct vc_data *vc, unsigned int value, char up_flag, struct pt_regs *regs)
657 diacr = (diacr ? handle_diacr(vc, value) : value);
660 static void k_self(struct vc_data *vc, unsigned char value, char up_flag, struct pt_regs *regs)
662 k_unicode(vc, value, up_flag, regs);
665 static void k_dead2(struct vc_data *vc, unsigned char value, char up_flag, struct pt_regs *regs)
667 k_deadunicode(vc, value, up_flag, regs);
671 * Obsolete - for backwards compatibility only
673 static void k_dead(struct vc_data *vc, unsigned char value, char up_flag, struct pt_regs *regs)
675 static const unsigned char ret_diacr[NR_DEAD] = {'`', '\'', '^', '~', '"', ',' };
676 value = ret_diacr[value];
677 k_deadunicode(vc, value, up_flag, regs);
680 static void k_cons(struct vc_data *vc, unsigned char value, char up_flag, struct pt_regs *regs)
687 static void k_fn(struct vc_data *vc, unsigned char value, char up_flag, struct pt_regs *regs)
694 if (v < ARRAY_SIZE(func_table)) {
695 if (func_table[value])
696 puts_queue(vc, func_table[value]);
698 printk(KERN_ERR "k_fn called with value=%d\n", value);
701 static void k_cur(struct vc_data *vc, unsigned char value, char up_flag, struct pt_regs *regs)
703 static const char *cur_chars = "BDCA";
707 applkey(vc, cur_chars[value], vc_kbd_mode(kbd, VC_CKMODE));
710 static void k_pad(struct vc_data *vc, unsigned char value, char up_flag, struct pt_regs *regs)
712 static const char pad_chars[] = "0123456789+-*/\015,.?()#";
713 static const char app_map[] = "pqrstuvwxylSRQMnnmPQS";
716 return; /* no action, if this is a key release */
718 /* kludge... shift forces cursor/number keys */
719 if (vc_kbd_mode(kbd, VC_APPLIC) && !shift_down[KG_SHIFT]) {
720 applkey(vc, app_map[value], 1);
724 if (!vc_kbd_led(kbd, VC_NUMLOCK))
728 k_fn(vc, KVAL(K_REMOVE), 0, regs);
731 k_fn(vc, KVAL(K_INSERT), 0, regs);
734 k_fn(vc, KVAL(K_SELECT), 0, regs);
737 k_cur(vc, KVAL(K_DOWN), 0, regs);
740 k_fn(vc, KVAL(K_PGDN), 0, regs);
743 k_cur(vc, KVAL(K_LEFT), 0, regs);
746 k_cur(vc, KVAL(K_RIGHT), 0, regs);
749 k_fn(vc, KVAL(K_FIND), 0, regs);
752 k_cur(vc, KVAL(K_UP), 0, regs);
755 k_fn(vc, KVAL(K_PGUP), 0, regs);
758 applkey(vc, 'G', vc_kbd_mode(kbd, VC_APPLIC));
762 put_queue(vc, pad_chars[value]);
763 if (value == KVAL(K_PENTER) && vc_kbd_mode(kbd, VC_CRLF))
767 static void k_shift(struct vc_data *vc, unsigned char value, char up_flag, struct pt_regs *regs)
769 int old_state = shift_state;
775 * a CapsShift key acts like Shift but undoes CapsLock
777 if (value == KVAL(K_CAPSSHIFT)) {
778 value = KVAL(K_SHIFT);
780 clr_vc_kbd_led(kbd, VC_CAPSLOCK);
785 * handle the case that two shift or control
786 * keys are depressed simultaneously
788 if (shift_down[value])
793 if (shift_down[value])
794 shift_state |= (1 << value);
796 shift_state &= ~(1 << value);
799 if (up_flag && shift_state != old_state && npadch != -1) {
800 if (kbd->kbdmode == VC_UNICODE)
801 to_utf8(vc, npadch & 0xffff);
803 put_queue(vc, npadch & 0xff);
808 static void k_meta(struct vc_data *vc, unsigned char value, char up_flag, struct pt_regs *regs)
813 if (vc_kbd_mode(kbd, VC_META)) {
814 put_queue(vc, '\033');
815 put_queue(vc, value);
817 put_queue(vc, value | 0x80);
820 static void k_ascii(struct vc_data *vc, unsigned char value, char up_flag, struct pt_regs *regs)
828 /* decimal input of code, while Alt depressed */
831 /* hexadecimal input of code, while AltGr depressed */
839 npadch = npadch * base + value;
842 static void k_lock(struct vc_data *vc, unsigned char value, char up_flag, struct pt_regs *regs)
846 chg_vc_kbd_lock(kbd, value);
849 static void k_slock(struct vc_data *vc, unsigned char value, char up_flag, struct pt_regs *regs)
851 k_shift(vc, value, up_flag, regs);
854 chg_vc_kbd_slock(kbd, value);
855 /* try to make Alt, oops, AltGr and such work */
856 if (!key_maps[kbd->lockstate ^ kbd->slockstate]) {
858 chg_vc_kbd_slock(kbd, value);
862 /* by default, 300ms interval for combination release */
863 static unsigned brl_timeout = 300;
864 MODULE_PARM_DESC(brl_timeout, "Braille keys release delay in ms (0 for commit on first key release)");
865 module_param(brl_timeout, uint, 0644);
867 static unsigned brl_nbchords = 1;
868 MODULE_PARM_DESC(brl_nbchords, "Number of chords that produce a braille pattern (0 for dead chords)");
869 module_param(brl_nbchords, uint, 0644);
871 static void k_brlcommit(struct vc_data *vc, unsigned int pattern, char up_flag, struct pt_regs *regs)
873 static unsigned long chords;
874 static unsigned committed;
877 k_deadunicode(vc, BRL_UC_ROW | pattern, up_flag, regs);
879 committed |= pattern;
881 if (chords == brl_nbchords) {
882 k_unicode(vc, BRL_UC_ROW | committed, up_flag, regs);
889 static void k_brl(struct vc_data *vc, unsigned char value, char up_flag, struct pt_regs *regs)
891 static unsigned pressed,committing;
892 static unsigned long releasestart;
894 if (kbd->kbdmode != VC_UNICODE) {
896 printk("keyboard mode must be unicode for braille patterns\n");
901 k_unicode(vc, BRL_UC_ROW, up_flag, regs);
911 jiffies - releasestart > (brl_timeout * HZ) / 1000) {
912 committing = pressed;
913 releasestart = jiffies;
915 pressed &= ~(1 << (value - 1));
918 k_brlcommit(vc, committing, 0, regs);
924 k_brlcommit(vc, committing, 0, regs);
927 pressed &= ~(1 << (value - 1));
930 pressed |= 1 << (value - 1);
932 committing = pressed;
937 * The leds display either (i) the status of NumLock, CapsLock, ScrollLock,
938 * or (ii) whatever pattern of lights people want to show using KDSETLED,
939 * or (iii) specified bits of specified words in kernel memory.
941 unsigned char getledstate(void)
946 void setledstate(struct kbd_struct *kbd, unsigned int led)
950 kbd->ledmode = LED_SHOW_IOCTL;
952 kbd->ledmode = LED_SHOW_FLAGS;
956 static inline unsigned char getleds(void)
958 struct kbd_struct *kbd = kbd_table + fg_console;
962 if (kbd->ledmode == LED_SHOW_IOCTL)
965 leds = kbd->ledflagstate;
967 if (kbd->ledmode == LED_SHOW_MEM) {
968 for (i = 0; i < 3; i++)
969 if (ledptrs[i].valid) {
970 if (*ledptrs[i].addr & ledptrs[i].mask)
980 * This routine is the bottom half of the keyboard interrupt
981 * routine, and runs with all interrupts enabled. It does
982 * console changing, led setting and copy_to_cooked, which can
983 * take a reasonably long time.
985 * Aside from timing (which isn't really that important for
986 * keyboard interrupts as they happen often), using the software
987 * interrupt routines for this thing allows us to easily mask
988 * this when we don't want any of the above to happen.
989 * This allows for easy and efficient race-condition prevention
990 * for kbd_start => input_inject_event(dev, EV_LED, ...) => ...
993 static void kbd_bh(unsigned long dummy)
995 struct list_head *node;
996 unsigned char leds = getleds();
998 if (leds != ledstate) {
999 list_for_each(node, &kbd_handler.h_list) {
1000 struct input_handle *handle = to_handle_h(node);
1001 input_inject_event(handle, EV_LED, LED_SCROLLL, !!(leds & 0x01));
1002 input_inject_event(handle, EV_LED, LED_NUML, !!(leds & 0x02));
1003 input_inject_event(handle, EV_LED, LED_CAPSL, !!(leds & 0x04));
1004 input_inject_event(handle, EV_SYN, SYN_REPORT, 0);
1011 DECLARE_TASKLET_DISABLED(keyboard_tasklet, kbd_bh, 0);
1013 #if defined(CONFIG_X86) || defined(CONFIG_IA64) || defined(CONFIG_ALPHA) ||\
1014 defined(CONFIG_MIPS) || defined(CONFIG_PPC) || defined(CONFIG_SPARC) ||\
1015 defined(CONFIG_PARISC) || defined(CONFIG_SUPERH) ||\
1016 (defined(CONFIG_ARM) && defined(CONFIG_KEYBOARD_ATKBD) && !defined(CONFIG_ARCH_RPC))
1018 #define HW_RAW(dev) (test_bit(EV_MSC, dev->evbit) && test_bit(MSC_RAW, dev->mscbit) &&\
1019 ((dev)->id.bustype == BUS_I8042) && ((dev)->id.vendor == 0x0001) && ((dev)->id.product == 0x0001))
1021 static const unsigned short x86_keycodes[256] =
1022 { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,
1023 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31,
1024 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47,
1025 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63,
1026 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79,
1027 80, 81, 82, 83, 84,118, 86, 87, 88,115,120,119,121,112,123, 92,
1028 284,285,309, 0,312, 91,327,328,329,331,333,335,336,337,338,339,
1029 367,288,302,304,350, 89,334,326,267,126,268,269,125,347,348,349,
1030 360,261,262,263,268,376,100,101,321,316,373,286,289,102,351,355,
1031 103,104,105,275,287,279,306,106,274,107,294,364,358,363,362,361,
1032 291,108,381,281,290,272,292,305,280, 99,112,257,258,359,113,114,
1033 264,117,271,374,379,265,266, 93, 94, 95, 85,259,375,260, 90,116,
1034 377,109,111,277,278,282,283,295,296,297,299,300,301,293,303,307,
1035 308,310,313,314,315,317,318,319,320,357,322,323,324,325,276,330,
1036 332,340,365,342,343,344,345,346,356,270,341,368,369,370,371,372 };
1038 #ifdef CONFIG_MAC_EMUMOUSEBTN
1039 extern int mac_hid_mouse_emulate_buttons(int, int, int);
1040 #endif /* CONFIG_MAC_EMUMOUSEBTN */
1043 static int sparc_l1_a_state = 0;
1044 extern void sun_do_break(void);
1047 static int emulate_raw(struct vc_data *vc, unsigned int keycode,
1048 unsigned char up_flag)
1054 put_queue(vc, 0xe1);
1055 put_queue(vc, 0x1d | up_flag);
1056 put_queue(vc, 0x45 | up_flag);
1061 put_queue(vc, 0xf2);
1066 put_queue(vc, 0xf1);
1071 * Real AT keyboards (that's what we're trying
1072 * to emulate here emit 0xe0 0x2a 0xe0 0x37 when
1073 * pressing PrtSc/SysRq alone, but simply 0x54
1074 * when pressing Alt+PrtSc/SysRq.
1077 put_queue(vc, 0x54 | up_flag);
1079 put_queue(vc, 0xe0);
1080 put_queue(vc, 0x2a | up_flag);
1081 put_queue(vc, 0xe0);
1082 put_queue(vc, 0x37 | up_flag);
1090 code = x86_keycodes[keycode];
1095 put_queue(vc, 0xe0);
1096 put_queue(vc, (code & 0x7f) | up_flag);
1106 #define HW_RAW(dev) 0
1108 #warning "Cannot generate rawmode keyboard for your architecture yet."
1110 static int emulate_raw(struct vc_data *vc, unsigned int keycode, unsigned char up_flag)
1115 put_queue(vc, keycode | up_flag);
1120 static void kbd_rawcode(unsigned char data)
1122 struct vc_data *vc = vc_cons[fg_console].d;
1123 kbd = kbd_table + fg_console;
1124 if (kbd->kbdmode == VC_RAW)
1125 put_queue(vc, data);
1128 static void kbd_keycode(unsigned int keycode, int down,
1129 int hw_raw, struct pt_regs *regs)
1131 struct vc_data *vc = vc_cons[fg_console].d;
1132 unsigned short keysym, *key_map;
1133 unsigned char type, raw_mode;
1134 struct tty_struct *tty;
1139 if (tty && (!tty->driver_data)) {
1140 /* No driver data? Strange. Okay we fix it then. */
1141 tty->driver_data = vc;
1144 kbd = kbd_table + fg_console;
1146 if (keycode == KEY_LEFTALT || keycode == KEY_RIGHTALT)
1147 sysrq_alt = down ? keycode : 0;
1149 if (keycode == KEY_STOP)
1150 sparc_l1_a_state = down;
1155 #ifdef CONFIG_MAC_EMUMOUSEBTN
1156 if (mac_hid_mouse_emulate_buttons(1, keycode, down))
1158 #endif /* CONFIG_MAC_EMUMOUSEBTN */
1160 if ((raw_mode = (kbd->kbdmode == VC_RAW)) && !hw_raw)
1161 if (emulate_raw(vc, keycode, !down << 7))
1162 if (keycode < BTN_MISC)
1163 printk(KERN_WARNING "keyboard.c: can't emulate rawmode for keycode %d\n", keycode);
1165 #ifdef CONFIG_MAGIC_SYSRQ /* Handle the SysRq Hack */
1166 if (keycode == KEY_SYSRQ && (sysrq_down || (down == 1 && sysrq_alt))) {
1169 sysrq_alt_use = sysrq_alt;
1173 if (sysrq_down && !down && keycode == sysrq_alt_use)
1175 if (sysrq_down && down && !rep) {
1176 handle_sysrq(kbd_sysrq_xlate[keycode], regs, tty);
1181 if (keycode == KEY_A && sparc_l1_a_state) {
1182 sparc_l1_a_state = 0;
1187 if (kbd->kbdmode == VC_MEDIUMRAW) {
1189 * This is extended medium raw mode, with keys above 127
1190 * encoded as 0, high 7 bits, low 7 bits, with the 0 bearing
1191 * the 'up' flag if needed. 0 is reserved, so this shouldn't
1192 * interfere with anything else. The two bytes after 0 will
1193 * always have the up flag set not to interfere with older
1194 * applications. This allows for 16384 different keycodes,
1195 * which should be enough.
1197 if (keycode < 128) {
1198 put_queue(vc, keycode | (!down << 7));
1200 put_queue(vc, !down << 7);
1201 put_queue(vc, (keycode >> 7) | 0x80);
1202 put_queue(vc, keycode | 0x80);
1208 set_bit(keycode, key_down);
1210 clear_bit(keycode, key_down);
1213 (!vc_kbd_mode(kbd, VC_REPEAT) ||
1214 (tty && !L_ECHO(tty) && tty->driver->chars_in_buffer(tty)))) {
1216 * Don't repeat a key if the input buffers are not empty and the
1217 * characters get aren't echoed locally. This makes key repeat
1218 * usable with slow applications and under heavy loads.
1223 shift_final = (shift_state | kbd->slockstate) ^ kbd->lockstate;
1224 key_map = key_maps[shift_final];
1227 compute_shiftstate();
1228 kbd->slockstate = 0;
1232 if (keycode > NR_KEYS)
1233 if (keycode >= KEY_BRL_DOT1 && keycode <= KEY_BRL_DOT8)
1234 keysym = K(KT_BRL, keycode - KEY_BRL_DOT1 + 1);
1238 keysym = key_map[keycode];
1240 type = KTYP(keysym);
1243 if (down && !raw_mode)
1244 to_utf8(vc, keysym);
1250 if (raw_mode && type != KT_SPEC && type != KT_SHIFT)
1253 if (type == KT_LETTER) {
1255 if (vc_kbd_led(kbd, VC_CAPSLOCK)) {
1256 key_map = key_maps[shift_final ^ (1 << KG_SHIFT)];
1258 keysym = key_map[keycode];
1262 (*k_handler[type])(vc, keysym & 0xff, !down, regs);
1264 if (type != KT_SLOCK)
1265 kbd->slockstate = 0;
1268 static void kbd_event(struct input_handle *handle, unsigned int event_type,
1269 unsigned int event_code, int value)
1271 if (event_type == EV_MSC && event_code == MSC_RAW && HW_RAW(handle->dev))
1273 if (event_type == EV_KEY)
1274 kbd_keycode(event_code, value, HW_RAW(handle->dev), handle->dev->regs);
1275 tasklet_schedule(&keyboard_tasklet);
1276 do_poke_blanked_console = 1;
1277 schedule_console_callback();
1281 * When a keyboard (or other input device) is found, the kbd_connect
1282 * function is called. The function then looks at the device, and if it
1283 * likes it, it can open it and get events from it. In this (kbd_connect)
1284 * function, we should decide which VT to bind that keyboard to initially.
1286 static struct input_handle *kbd_connect(struct input_handler *handler,
1287 struct input_dev *dev,
1288 struct input_device_id *id)
1290 struct input_handle *handle;
1293 for (i = KEY_RESERVED; i < BTN_MISC; i++)
1294 if (test_bit(i, dev->keybit))
1297 if (i == BTN_MISC && !test_bit(EV_SND, dev->evbit))
1300 handle = kzalloc(sizeof(struct input_handle), GFP_KERNEL);
1305 handle->handler = handler;
1306 handle->name = "kbd";
1308 input_open_device(handle);
1313 static void kbd_disconnect(struct input_handle *handle)
1315 input_close_device(handle);
1320 * Start keyboard handler on the new keyboard by refreshing LED state to
1321 * match the rest of the system.
1323 static void kbd_start(struct input_handle *handle)
1325 unsigned char leds = ledstate;
1327 tasklet_disable(&keyboard_tasklet);
1329 input_inject_event(handle, EV_LED, LED_SCROLLL, !!(leds & 0x01));
1330 input_inject_event(handle, EV_LED, LED_NUML, !!(leds & 0x02));
1331 input_inject_event(handle, EV_LED, LED_CAPSL, !!(leds & 0x04));
1332 input_inject_event(handle, EV_SYN, SYN_REPORT, 0);
1334 tasklet_enable(&keyboard_tasklet);
1337 static struct input_device_id kbd_ids[] = {
1339 .flags = INPUT_DEVICE_ID_MATCH_EVBIT,
1340 .evbit = { BIT(EV_KEY) },
1344 .flags = INPUT_DEVICE_ID_MATCH_EVBIT,
1345 .evbit = { BIT(EV_SND) },
1348 { }, /* Terminating entry */
1351 MODULE_DEVICE_TABLE(input, kbd_ids);
1353 static struct input_handler kbd_handler = {
1355 .connect = kbd_connect,
1356 .disconnect = kbd_disconnect,
1359 .id_table = kbd_ids,
1362 int __init kbd_init(void)
1366 for (i = 0; i < MAX_NR_CONSOLES; i++) {
1367 kbd_table[i].ledflagstate = KBD_DEFLEDS;
1368 kbd_table[i].default_ledflagstate = KBD_DEFLEDS;
1369 kbd_table[i].ledmode = LED_SHOW_FLAGS;
1370 kbd_table[i].lockstate = KBD_DEFLOCK;
1371 kbd_table[i].slockstate = 0;
1372 kbd_table[i].modeflags = KBD_DEFMODE;
1373 kbd_table[i].kbdmode = VC_XLATE;
1376 input_register_handler(&kbd_handler);
1378 tasklet_enable(&keyboard_tasklet);
1379 tasklet_schedule(&keyboard_tasklet);