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/config.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>
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>
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;
110 static struct kbd_struct kbd0;
112 int spawnpid, spawnsig;
115 * Variables exported for vt.c
124 static struct input_handler kbd_handler;
125 static unsigned long key_down[NBITS(KEY_MAX)]; /* keyboard key bitmap */
126 static unsigned char shift_down[NR_SHIFT]; /* shift state counters.. */
127 static int dead_key_next;
128 static int npadch = -1; /* -1 or number assembled on pad */
129 static unsigned int diacr;
130 static char rep; /* flag telling character repeat */
132 static unsigned char ledstate = 0xff; /* undefined */
133 static unsigned char ledioctl;
135 static struct ledptr {
138 unsigned char valid:1;
141 /* Simple translation table for the SysRq keys */
143 #ifdef CONFIG_MAGIC_SYSRQ
144 unsigned char kbd_sysrq_xlate[KEY_MAX + 1] =
145 "\000\0331234567890-=\177\t" /* 0x00 - 0x0f */
146 "qwertyuiop[]\r\000as" /* 0x10 - 0x1f */
147 "dfghjkl;'`\000\\zxcv" /* 0x20 - 0x2f */
148 "bnm,./\000*\000 \000\201\202\203\204\205" /* 0x30 - 0x3f */
149 "\206\207\210\211\212\000\000789-456+1" /* 0x40 - 0x4f */
150 "230\177\000\000\213\214\000\000\000\000\000\000\000\000\000\000" /* 0x50 - 0x5f */
151 "\r\000/"; /* 0x60 - 0x6f */
152 static int sysrq_down;
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_event(handle->dev, EV_SND, SND_TONE, 0);
230 if (test_bit(SND_BELL, handle->dev->sndbit))
231 input_event(handle->dev, 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_event(handle->dev, EV_SND, SND_TONE, hz);
252 if (test_bit(SND_BELL, handle->dev->sndbit)) {
253 input_event(handle->dev, 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_event(dev, EV_REP, REP_DELAY, rep->delay);
282 input_event(dev, 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 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 long brl_timeout = 300;
864 MODULE_PARM_DESC(brl_timeout, "Braille keys release delay in ms (0 for combination on first release, < 0 for dead characters)");
865 module_param(brl_timeout, long, 0644);
866 static void k_brl(struct vc_data *vc, unsigned char value, char up_flag, struct pt_regs *regs)
868 static unsigned pressed,committing;
869 static unsigned long releasestart;
871 if (kbd->kbdmode != VC_UNICODE) {
873 printk("keyboard mode must be unicode for braille patterns\n");
878 k_unicode(vc, BRL_UC_ROW, up_flag, regs);
885 if (brl_timeout < 0) {
886 k_deadunicode(vc, BRL_UC_ROW | (1 << (value - 1)), up_flag, regs);
893 jiffies - releasestart > (brl_timeout * HZ) / 1000) {
894 committing = pressed;
895 releasestart = jiffies;
897 pressed &= ~(1 << (value - 1));
900 k_unicode(vc, BRL_UC_ROW | committing, 0, regs);
906 k_unicode(vc, BRL_UC_ROW | committing, 0, regs);
909 pressed &= ~(1 << (value - 1));
912 pressed |= 1 << (value - 1);
914 committing = pressed;
919 * The leds display either (i) the status of NumLock, CapsLock, ScrollLock,
920 * or (ii) whatever pattern of lights people want to show using KDSETLED,
921 * or (iii) specified bits of specified words in kernel memory.
923 unsigned char getledstate(void)
928 void setledstate(struct kbd_struct *kbd, unsigned int led)
932 kbd->ledmode = LED_SHOW_IOCTL;
934 kbd->ledmode = LED_SHOW_FLAGS;
938 static inline unsigned char getleds(void)
940 struct kbd_struct *kbd = kbd_table + fg_console;
944 if (kbd->ledmode == LED_SHOW_IOCTL)
947 leds = kbd->ledflagstate;
949 if (kbd->ledmode == LED_SHOW_MEM) {
950 for (i = 0; i < 3; i++)
951 if (ledptrs[i].valid) {
952 if (*ledptrs[i].addr & ledptrs[i].mask)
962 * This routine is the bottom half of the keyboard interrupt
963 * routine, and runs with all interrupts enabled. It does
964 * console changing, led setting and copy_to_cooked, which can
965 * take a reasonably long time.
967 * Aside from timing (which isn't really that important for
968 * keyboard interrupts as they happen often), using the software
969 * interrupt routines for this thing allows us to easily mask
970 * this when we don't want any of the above to happen.
971 * This allows for easy and efficient race-condition prevention
972 * for kbd_refresh_leds => input_event(dev, EV_LED, ...) => ...
975 static void kbd_bh(unsigned long dummy)
977 struct list_head *node;
978 unsigned char leds = getleds();
980 if (leds != ledstate) {
981 list_for_each(node, &kbd_handler.h_list) {
982 struct input_handle * handle = to_handle_h(node);
983 input_event(handle->dev, EV_LED, LED_SCROLLL, !!(leds & 0x01));
984 input_event(handle->dev, EV_LED, LED_NUML, !!(leds & 0x02));
985 input_event(handle->dev, EV_LED, LED_CAPSL, !!(leds & 0x04));
986 input_sync(handle->dev);
993 DECLARE_TASKLET_DISABLED(keyboard_tasklet, kbd_bh, 0);
996 * This allows a newly plugged keyboard to pick the LED state.
998 static void kbd_refresh_leds(struct input_handle *handle)
1000 unsigned char leds = ledstate;
1002 tasklet_disable(&keyboard_tasklet);
1004 input_event(handle->dev, EV_LED, LED_SCROLLL, !!(leds & 0x01));
1005 input_event(handle->dev, EV_LED, LED_NUML, !!(leds & 0x02));
1006 input_event(handle->dev, EV_LED, LED_CAPSL, !!(leds & 0x04));
1007 input_sync(handle->dev);
1009 tasklet_enable(&keyboard_tasklet);
1012 #if defined(CONFIG_X86) || defined(CONFIG_IA64) || defined(CONFIG_ALPHA) ||\
1013 defined(CONFIG_MIPS) || defined(CONFIG_PPC) || defined(CONFIG_SPARC) ||\
1014 defined(CONFIG_PARISC) || defined(CONFIG_SUPERH) ||\
1015 (defined(CONFIG_ARM) && defined(CONFIG_KEYBOARD_ATKBD) && !defined(CONFIG_ARCH_RPC))
1017 #define HW_RAW(dev) (test_bit(EV_MSC, dev->evbit) && test_bit(MSC_RAW, dev->mscbit) &&\
1018 ((dev)->id.bustype == BUS_I8042) && ((dev)->id.vendor == 0x0001) && ((dev)->id.product == 0x0001))
1020 static unsigned short x86_keycodes[256] =
1021 { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,
1022 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31,
1023 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47,
1024 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63,
1025 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79,
1026 80, 81, 82, 83, 84,118, 86, 87, 88,115,120,119,121,112,123, 92,
1027 284,285,309,298,312, 91,327,328,329,331,333,335,336,337,338,339,
1028 367,288,302,304,350, 89,334,326,267,126,268,269,125,347,348,349,
1029 360,261,262,263,268,376,100,101,321,316,373,286,289,102,351,355,
1030 103,104,105,275,287,279,306,106,274,107,294,364,358,363,362,361,
1031 291,108,381,281,290,272,292,305,280, 99,112,257,258,359,113,114,
1032 264,117,271,374,379,265,266, 93, 94, 95, 85,259,375,260, 90,116,
1033 377,109,111,277,278,282,283,295,296,297,299,300,301,293,303,307,
1034 308,310,313,314,315,317,318,319,320,357,322,323,324,325,276,330,
1035 332,340,365,342,343,344,345,346,356,270,341,368,369,370,371,372 };
1037 #ifdef CONFIG_MAC_EMUMOUSEBTN
1038 extern int mac_hid_mouse_emulate_buttons(int, int, int);
1039 #endif /* CONFIG_MAC_EMUMOUSEBTN */
1042 static int sparc_l1_a_state = 0;
1043 extern void sun_do_break(void);
1046 static int emulate_raw(struct vc_data *vc, unsigned int keycode,
1047 unsigned char up_flag)
1049 if (keycode > 255 || !x86_keycodes[keycode])
1054 put_queue(vc, 0xe1);
1055 put_queue(vc, 0x1d | up_flag);
1056 put_queue(vc, 0x45 | up_flag);
1059 if (!up_flag) put_queue(vc, 0xf1);
1062 if (!up_flag) put_queue(vc, 0xf2);
1066 if (keycode == KEY_SYSRQ && sysrq_alt) {
1067 put_queue(vc, 0x54 | up_flag);
1071 if (x86_keycodes[keycode] & 0x100)
1072 put_queue(vc, 0xe0);
1074 put_queue(vc, (x86_keycodes[keycode] & 0x7f) | up_flag);
1076 if (keycode == KEY_SYSRQ) {
1077 put_queue(vc, 0xe0);
1078 put_queue(vc, 0x37 | up_flag);
1086 #define HW_RAW(dev) 0
1088 #warning "Cannot generate rawmode keyboard for your architecture yet."
1090 static int emulate_raw(struct vc_data *vc, unsigned int keycode, unsigned char up_flag)
1095 put_queue(vc, keycode | up_flag);
1100 static void kbd_rawcode(unsigned char data)
1102 struct vc_data *vc = vc_cons[fg_console].d;
1103 kbd = kbd_table + fg_console;
1104 if (kbd->kbdmode == VC_RAW)
1105 put_queue(vc, data);
1108 static void kbd_keycode(unsigned int keycode, int down,
1109 int hw_raw, struct pt_regs *regs)
1111 struct vc_data *vc = vc_cons[fg_console].d;
1112 unsigned short keysym, *key_map;
1113 unsigned char type, raw_mode;
1114 struct tty_struct *tty;
1119 if (tty && (!tty->driver_data)) {
1120 /* No driver data? Strange. Okay we fix it then. */
1121 tty->driver_data = vc;
1124 kbd = kbd_table + fg_console;
1126 if (keycode == KEY_LEFTALT || keycode == KEY_RIGHTALT)
1129 if (keycode == KEY_STOP)
1130 sparc_l1_a_state = down;
1135 #ifdef CONFIG_MAC_EMUMOUSEBTN
1136 if (mac_hid_mouse_emulate_buttons(1, keycode, down))
1138 #endif /* CONFIG_MAC_EMUMOUSEBTN */
1140 if ((raw_mode = (kbd->kbdmode == VC_RAW)) && !hw_raw)
1141 if (emulate_raw(vc, keycode, !down << 7))
1142 if (keycode < BTN_MISC)
1143 printk(KERN_WARNING "keyboard.c: can't emulate rawmode for keycode %d\n", keycode);
1145 #ifdef CONFIG_MAGIC_SYSRQ /* Handle the SysRq Hack */
1146 if (keycode == KEY_SYSRQ && (sysrq_down || (down == 1 && sysrq_alt))) {
1150 if (sysrq_down && down && !rep) {
1151 handle_sysrq(kbd_sysrq_xlate[keycode], regs, tty);
1156 if (keycode == KEY_A && sparc_l1_a_state) {
1157 sparc_l1_a_state = 0;
1162 if (kbd->kbdmode == VC_MEDIUMRAW) {
1164 * This is extended medium raw mode, with keys above 127
1165 * encoded as 0, high 7 bits, low 7 bits, with the 0 bearing
1166 * the 'up' flag if needed. 0 is reserved, so this shouldn't
1167 * interfere with anything else. The two bytes after 0 will
1168 * always have the up flag set not to interfere with older
1169 * applications. This allows for 16384 different keycodes,
1170 * which should be enough.
1172 if (keycode < 128) {
1173 put_queue(vc, keycode | (!down << 7));
1175 put_queue(vc, !down << 7);
1176 put_queue(vc, (keycode >> 7) | 0x80);
1177 put_queue(vc, keycode | 0x80);
1183 set_bit(keycode, key_down);
1185 clear_bit(keycode, key_down);
1188 (!vc_kbd_mode(kbd, VC_REPEAT) ||
1189 (tty && !L_ECHO(tty) && tty->driver->chars_in_buffer(tty)))) {
1191 * Don't repeat a key if the input buffers are not empty and the
1192 * characters get aren't echoed locally. This makes key repeat
1193 * usable with slow applications and under heavy loads.
1198 shift_final = (shift_state | kbd->slockstate) ^ kbd->lockstate;
1199 key_map = key_maps[shift_final];
1202 compute_shiftstate();
1203 kbd->slockstate = 0;
1207 if (keycode > NR_KEYS)
1208 if (keycode >= KEY_BRL_DOT1 && keycode <= KEY_BRL_DOT8)
1209 keysym = K(KT_BRL, keycode - KEY_BRL_DOT1 + 1);
1213 keysym = key_map[keycode];
1215 type = KTYP(keysym);
1218 if (down && !raw_mode)
1219 to_utf8(vc, keysym);
1225 if (raw_mode && type != KT_SPEC && type != KT_SHIFT)
1228 if (type == KT_LETTER) {
1230 if (vc_kbd_led(kbd, VC_CAPSLOCK)) {
1231 key_map = key_maps[shift_final ^ (1 << KG_SHIFT)];
1233 keysym = key_map[keycode];
1237 (*k_handler[type])(vc, keysym & 0xff, !down, regs);
1239 if (type != KT_SLOCK)
1240 kbd->slockstate = 0;
1243 static void kbd_event(struct input_handle *handle, unsigned int event_type,
1244 unsigned int event_code, int value)
1246 if (event_type == EV_MSC && event_code == MSC_RAW && HW_RAW(handle->dev))
1248 if (event_type == EV_KEY)
1249 kbd_keycode(event_code, value, HW_RAW(handle->dev), handle->dev->regs);
1250 tasklet_schedule(&keyboard_tasklet);
1251 do_poke_blanked_console = 1;
1252 schedule_console_callback();
1256 * When a keyboard (or other input device) is found, the kbd_connect
1257 * function is called. The function then looks at the device, and if it
1258 * likes it, it can open it and get events from it. In this (kbd_connect)
1259 * function, we should decide which VT to bind that keyboard to initially.
1261 static struct input_handle *kbd_connect(struct input_handler *handler,
1262 struct input_dev *dev,
1263 struct input_device_id *id)
1265 struct input_handle *handle;
1268 for (i = KEY_RESERVED; i < BTN_MISC; i++)
1269 if (test_bit(i, dev->keybit))
1272 if (i == BTN_MISC && !test_bit(EV_SND, dev->evbit))
1275 if (!(handle = kmalloc(sizeof(struct input_handle), GFP_KERNEL)))
1277 memset(handle, 0, sizeof(struct input_handle));
1280 handle->handler = handler;
1281 handle->name = "kbd";
1283 input_open_device(handle);
1284 kbd_refresh_leds(handle);
1289 static void kbd_disconnect(struct input_handle *handle)
1291 input_close_device(handle);
1295 static struct input_device_id kbd_ids[] = {
1297 .flags = INPUT_DEVICE_ID_MATCH_EVBIT,
1298 .evbit = { BIT(EV_KEY) },
1302 .flags = INPUT_DEVICE_ID_MATCH_EVBIT,
1303 .evbit = { BIT(EV_SND) },
1306 { }, /* Terminating entry */
1309 MODULE_DEVICE_TABLE(input, kbd_ids);
1311 static struct input_handler kbd_handler = {
1313 .connect = kbd_connect,
1314 .disconnect = kbd_disconnect,
1316 .id_table = kbd_ids,
1319 int __init kbd_init(void)
1323 kbd0.ledflagstate = kbd0.default_ledflagstate = KBD_DEFLEDS;
1324 kbd0.ledmode = LED_SHOW_FLAGS;
1325 kbd0.lockstate = KBD_DEFLOCK;
1326 kbd0.slockstate = 0;
1327 kbd0.modeflags = KBD_DEFMODE;
1328 kbd0.kbdmode = VC_XLATE;
1330 for (i = 0 ; i < MAX_NR_CONSOLES ; i++)
1331 kbd_table[i] = kbd0;
1333 input_register_handler(&kbd_handler);
1335 tasklet_enable(&keyboard_tasklet);
1336 tasklet_schedule(&keyboard_tasklet);