2 * linux/drivers/char/keyboard.c
4 * Written for linux by Johan Myreen as a translation from
5 * the assembly version by Linus (with diacriticals added)
7 * Some additional features added by Christoph Niemann (ChN), March 1993
9 * Loadable keymaps by Risto Kankkunen, May 1993
11 * Diacriticals redone & other small changes, aeb@cwi.nl, June 1993
12 * Added decr/incr_console, dynamic keymaps, Unicode support,
13 * dynamic function/string keys, led setting, Sept 1994
14 * `Sticky' modifier keys, 951006.
16 * 11-11-96: SAK should now work in the raw mode (Martin Mares)
18 * Modified to provide 'generic' keyboard support by Hamish Macdonald
19 * Merge with the m68k keyboard driver and split-off of the PC low-level
20 * parts by Geert Uytterhoeven, May 1997
22 * 27-05-97: Added support for the Magic SysRq Key (Martin Mares)
23 * 30-07-98: Dead keys redone, aeb@cwi.nl.
24 * 21-08-02: Converted to input API, major cleanup. (Vojtech Pavlik)
27 #include <linux/consolemap.h>
28 #include <linux/module.h>
29 #include <linux/sched.h>
30 #include <linux/tty.h>
31 #include <linux/tty_flip.h>
33 #include <linux/string.h>
34 #include <linux/init.h>
35 #include <linux/slab.h>
36 #include <linux/irq.h>
38 #include <linux/kbd_kern.h>
39 #include <linux/kbd_diacr.h>
40 #include <linux/vt_kern.h>
41 #include <linux/sysrq.h>
42 #include <linux/input.h>
43 #include <linux/reboot.h>
44 #include <linux/notifier.h>
46 extern void ctrl_alt_del(void);
49 * Exported functions/variables
52 #define KBD_DEFMODE ((1 << VC_REPEAT) | (1 << VC_META))
55 * Some laptops take the 789uiojklm,. keys as number pad when NumLock is on.
56 * This seems a good reason to start with NumLock off. On HIL keyboards
57 * of PARISC machines however there is no NumLock key and everyone expects the keypad
58 * to be used for numbers.
61 #if defined(CONFIG_PARISC) && (defined(CONFIG_KEYBOARD_HIL) || defined(CONFIG_KEYBOARD_HIL_OLD))
62 #define KBD_DEFLEDS (1 << VC_NUMLOCK)
69 void compute_shiftstate(void);
76 k_self, k_fn, k_spec, k_pad,\
77 k_dead, k_cons, k_cur, k_shift,\
78 k_meta, k_ascii, k_lock, k_lowercase,\
79 k_slock, k_dead2, k_brl, k_ignore
81 typedef void (k_handler_fn)(struct vc_data *vc, unsigned char value,
83 static k_handler_fn K_HANDLERS;
84 k_handler_fn *k_handler[16] = { K_HANDLERS };
85 EXPORT_SYMBOL_GPL(k_handler);
88 fn_null, fn_enter, fn_show_ptregs, fn_show_mem,\
89 fn_show_state, fn_send_intr, fn_lastcons, fn_caps_toggle,\
90 fn_num, fn_hold, fn_scroll_forw, fn_scroll_back,\
91 fn_boot_it, fn_caps_on, fn_compose, fn_SAK,\
92 fn_dec_console, fn_inc_console, fn_spawn_con, fn_bare_num
94 typedef void (fn_handler_fn)(struct vc_data *vc);
95 static fn_handler_fn FN_HANDLERS;
96 static fn_handler_fn *fn_handler[] = { FN_HANDLERS };
99 * Variables exported for vt_ioctl.c
102 /* maximum values each key_handler can handle */
103 const int max_vals[] = {
104 255, ARRAY_SIZE(func_table) - 1, ARRAY_SIZE(fn_handler) - 1, NR_PAD - 1,
105 NR_DEAD - 1, 255, 3, NR_SHIFT - 1, 255, NR_ASCII - 1, NR_LOCK - 1,
106 255, NR_LOCK - 1, 255, NR_BRL - 1
109 const int NR_TYPES = ARRAY_SIZE(max_vals);
111 struct kbd_struct kbd_table[MAX_NR_CONSOLES];
112 static struct kbd_struct *kbd = kbd_table;
114 struct vt_spawn_console vt_spawn_con = {
115 .lock = __SPIN_LOCK_UNLOCKED(vt_spawn_con.lock),
121 * Variables exported for vt.c
130 static struct input_handler kbd_handler;
131 static unsigned long key_down[BITS_TO_LONGS(KEY_CNT)]; /* keyboard key bitmap */
132 static unsigned char shift_down[NR_SHIFT]; /* shift state counters.. */
133 static int dead_key_next;
134 static int npadch = -1; /* -1 or number assembled on pad */
135 static unsigned int diacr;
136 static char rep; /* flag telling character repeat */
138 static unsigned char ledstate = 0xff; /* undefined */
139 static unsigned char ledioctl;
141 static struct ledptr {
144 unsigned char valid:1;
147 /* Simple translation table for the SysRq keys */
149 #ifdef CONFIG_MAGIC_SYSRQ
150 unsigned char kbd_sysrq_xlate[KEY_MAX + 1] =
151 "\000\0331234567890-=\177\t" /* 0x00 - 0x0f */
152 "qwertyuiop[]\r\000as" /* 0x10 - 0x1f */
153 "dfghjkl;'`\000\\zxcv" /* 0x20 - 0x2f */
154 "bnm,./\000*\000 \000\201\202\203\204\205" /* 0x30 - 0x3f */
155 "\206\207\210\211\212\000\000789-456+1" /* 0x40 - 0x4f */
156 "230\177\000\000\213\214\000\000\000\000\000\000\000\000\000\000" /* 0x50 - 0x5f */
157 "\r\000/"; /* 0x60 - 0x6f */
158 static int sysrq_down;
159 static int sysrq_alt_use;
161 static int sysrq_alt;
164 * Notifier list for console keyboard events
166 static ATOMIC_NOTIFIER_HEAD(keyboard_notifier_list);
168 int register_keyboard_notifier(struct notifier_block *nb)
170 return atomic_notifier_chain_register(&keyboard_notifier_list, nb);
172 EXPORT_SYMBOL_GPL(register_keyboard_notifier);
174 int unregister_keyboard_notifier(struct notifier_block *nb)
176 return atomic_notifier_chain_unregister(&keyboard_notifier_list, nb);
178 EXPORT_SYMBOL_GPL(unregister_keyboard_notifier);
181 * Translation of scancodes to keycodes. We set them on only the first
182 * keyboard in the list that accepts the scancode and keycode.
183 * Explanation for not choosing the first attached keyboard anymore:
184 * USB keyboards for example have two event devices: one for all "normal"
185 * keys and one for extra function keys (like "volume up", "make coffee",
186 * etc.). So this means that scancodes for the extra function keys won't
187 * be valid for the first event device, but will be for the second.
189 int getkeycode(unsigned int scancode)
191 struct input_handle *handle;
195 list_for_each_entry(handle, &kbd_handler.h_list, h_node) {
196 error = input_get_keycode(handle->dev, scancode, &keycode);
204 int setkeycode(unsigned int scancode, unsigned int keycode)
206 struct input_handle *handle;
209 list_for_each_entry(handle, &kbd_handler.h_list, h_node) {
210 error = input_set_keycode(handle->dev, scancode, keycode);
219 * Making beeps and bells.
221 static void kd_nosound(unsigned long ignored)
223 struct input_handle *handle;
225 list_for_each_entry(handle, &kbd_handler.h_list, h_node) {
226 if (test_bit(EV_SND, handle->dev->evbit)) {
227 if (test_bit(SND_TONE, handle->dev->sndbit))
228 input_inject_event(handle, EV_SND, SND_TONE, 0);
229 if (test_bit(SND_BELL, handle->dev->sndbit))
230 input_inject_event(handle, EV_SND, SND_BELL, 0);
235 static DEFINE_TIMER(kd_mksound_timer, kd_nosound, 0, 0);
237 void kd_mksound(unsigned int hz, unsigned int ticks)
239 struct list_head *node;
241 del_timer(&kd_mksound_timer);
244 list_for_each_prev(node, &kbd_handler.h_list) {
245 struct input_handle *handle = to_handle_h(node);
246 if (test_bit(EV_SND, handle->dev->evbit)) {
247 if (test_bit(SND_TONE, handle->dev->sndbit)) {
248 input_inject_event(handle, EV_SND, SND_TONE, hz);
251 if (test_bit(SND_BELL, handle->dev->sndbit)) {
252 input_inject_event(handle, EV_SND, SND_BELL, 1);
258 mod_timer(&kd_mksound_timer, jiffies + ticks);
264 * Setting the keyboard rate.
267 int kbd_rate(struct kbd_repeat *rep)
269 struct list_head *node;
273 list_for_each(node, &kbd_handler.h_list) {
274 struct input_handle *handle = to_handle_h(node);
275 struct input_dev *dev = handle->dev;
277 if (test_bit(EV_REP, dev->evbit)) {
279 input_inject_event(handle, EV_REP, REP_DELAY, rep->delay);
281 input_inject_event(handle, EV_REP, REP_PERIOD, rep->period);
282 d = dev->rep[REP_DELAY];
283 p = dev->rep[REP_PERIOD];
294 static void put_queue(struct vc_data *vc, int ch)
296 struct tty_struct *tty = vc->vc_tty;
299 tty_insert_flip_char(tty, ch, 0);
300 con_schedule_flip(tty);
304 static void puts_queue(struct vc_data *vc, char *cp)
306 struct tty_struct *tty = vc->vc_tty;
312 tty_insert_flip_char(tty, *cp, 0);
315 con_schedule_flip(tty);
318 static void applkey(struct vc_data *vc, int key, char mode)
320 static char buf[] = { 0x1b, 'O', 0x00, 0x00 };
322 buf[1] = (mode ? 'O' : '[');
328 * Many other routines do put_queue, but I think either
329 * they produce ASCII, or they produce some user-assigned
330 * string, and in both cases we might assume that it is
333 static void to_utf8(struct vc_data *vc, uint c)
338 else if (c < 0x800) {
339 /* 110***** 10****** */
340 put_queue(vc, 0xc0 | (c >> 6));
341 put_queue(vc, 0x80 | (c & 0x3f));
342 } else if (c < 0x10000) {
343 if (c >= 0xD800 && c < 0xE000)
347 /* 1110**** 10****** 10****** */
348 put_queue(vc, 0xe0 | (c >> 12));
349 put_queue(vc, 0x80 | ((c >> 6) & 0x3f));
350 put_queue(vc, 0x80 | (c & 0x3f));
351 } else if (c < 0x110000) {
352 /* 11110*** 10****** 10****** 10****** */
353 put_queue(vc, 0xf0 | (c >> 18));
354 put_queue(vc, 0x80 | ((c >> 12) & 0x3f));
355 put_queue(vc, 0x80 | ((c >> 6) & 0x3f));
356 put_queue(vc, 0x80 | (c & 0x3f));
361 * Called after returning from RAW mode or when changing consoles - recompute
362 * shift_down[] and shift_state from key_down[] maybe called when keymap is
363 * undefined, so that shiftkey release is seen
365 void compute_shiftstate(void)
367 unsigned int i, j, k, sym, val;
370 memset(shift_down, 0, sizeof(shift_down));
372 for (i = 0; i < ARRAY_SIZE(key_down); i++) {
377 k = i * BITS_PER_LONG;
379 for (j = 0; j < BITS_PER_LONG; j++, k++) {
381 if (!test_bit(k, key_down))
384 sym = U(key_maps[0][k]);
385 if (KTYP(sym) != KT_SHIFT && KTYP(sym) != KT_SLOCK)
389 if (val == KVAL(K_CAPSSHIFT))
393 shift_state |= (1 << val);
399 * We have a combining character DIACR here, followed by the character CH.
400 * If the combination occurs in the table, return the corresponding value.
401 * Otherwise, if CH is a space or equals DIACR, return DIACR.
402 * Otherwise, conclude that DIACR was not combining after all,
403 * queue it and return CH.
405 static unsigned int handle_diacr(struct vc_data *vc, unsigned int ch)
407 unsigned int d = diacr;
412 if ((d & ~0xff) == BRL_UC_ROW) {
413 if ((ch & ~0xff) == BRL_UC_ROW)
416 for (i = 0; i < accent_table_size; i++)
417 if (accent_table[i].diacr == d && accent_table[i].base == ch)
418 return accent_table[i].result;
421 if (ch == ' ' || ch == (BRL_UC_ROW|0) || ch == d)
424 if (kbd->kbdmode == VC_UNICODE)
427 int c = conv_uni_to_8bit(d);
436 * Special function handlers
438 static void fn_enter(struct vc_data *vc)
441 if (kbd->kbdmode == VC_UNICODE)
444 int c = conv_uni_to_8bit(diacr);
451 if (vc_kbd_mode(kbd, VC_CRLF))
455 static void fn_caps_toggle(struct vc_data *vc)
459 chg_vc_kbd_led(kbd, VC_CAPSLOCK);
462 static void fn_caps_on(struct vc_data *vc)
466 set_vc_kbd_led(kbd, VC_CAPSLOCK);
469 static void fn_show_ptregs(struct vc_data *vc)
471 struct pt_regs *regs = get_irq_regs();
476 static void fn_hold(struct vc_data *vc)
478 struct tty_struct *tty = vc->vc_tty;
484 * Note: SCROLLOCK will be set (cleared) by stop_tty (start_tty);
485 * these routines are also activated by ^S/^Q.
486 * (And SCROLLOCK can also be set by the ioctl KDSKBLED.)
494 static void fn_num(struct vc_data *vc)
496 if (vc_kbd_mode(kbd,VC_APPLIC))
503 * Bind this to Shift-NumLock if you work in application keypad mode
504 * but want to be able to change the NumLock flag.
505 * Bind this to NumLock if you prefer that the NumLock key always
506 * changes the NumLock flag.
508 static void fn_bare_num(struct vc_data *vc)
511 chg_vc_kbd_led(kbd, VC_NUMLOCK);
514 static void fn_lastcons(struct vc_data *vc)
516 /* switch to the last used console, ChN */
517 set_console(last_console);
520 static void fn_dec_console(struct vc_data *vc)
522 int i, cur = fg_console;
524 /* Currently switching? Queue this next switch relative to that. */
525 if (want_console != -1)
528 for (i = cur - 1; i != cur; i--) {
530 i = MAX_NR_CONSOLES - 1;
531 if (vc_cons_allocated(i))
537 static void fn_inc_console(struct vc_data *vc)
539 int i, cur = fg_console;
541 /* Currently switching? Queue this next switch relative to that. */
542 if (want_console != -1)
545 for (i = cur+1; i != cur; i++) {
546 if (i == MAX_NR_CONSOLES)
548 if (vc_cons_allocated(i))
554 static void fn_send_intr(struct vc_data *vc)
556 struct tty_struct *tty = vc->vc_tty;
560 tty_insert_flip_char(tty, 0, TTY_BREAK);
561 con_schedule_flip(tty);
564 static void fn_scroll_forw(struct vc_data *vc)
569 static void fn_scroll_back(struct vc_data *vc)
574 static void fn_show_mem(struct vc_data *vc)
579 static void fn_show_state(struct vc_data *vc)
584 static void fn_boot_it(struct vc_data *vc)
589 static void fn_compose(struct vc_data *vc)
594 static void fn_spawn_con(struct vc_data *vc)
596 spin_lock(&vt_spawn_con.lock);
597 if (vt_spawn_con.pid)
598 if (kill_pid(vt_spawn_con.pid, vt_spawn_con.sig, 1)) {
599 put_pid(vt_spawn_con.pid);
600 vt_spawn_con.pid = NULL;
602 spin_unlock(&vt_spawn_con.lock);
605 static void fn_SAK(struct vc_data *vc)
607 struct work_struct *SAK_work = &vc_cons[fg_console].SAK_work;
608 schedule_work(SAK_work);
611 static void fn_null(struct vc_data *vc)
613 compute_shiftstate();
617 * Special key handlers
619 static void k_ignore(struct vc_data *vc, unsigned char value, char up_flag)
623 static void k_spec(struct vc_data *vc, unsigned char value, char up_flag)
627 if (value >= ARRAY_SIZE(fn_handler))
629 if ((kbd->kbdmode == VC_RAW ||
630 kbd->kbdmode == VC_MEDIUMRAW) &&
631 value != KVAL(K_SAK))
632 return; /* SAK is allowed even in raw mode */
633 fn_handler[value](vc);
636 static void k_lowercase(struct vc_data *vc, unsigned char value, char up_flag)
638 printk(KERN_ERR "keyboard.c: k_lowercase was called - impossible\n");
641 static void k_unicode(struct vc_data *vc, unsigned int value, char up_flag)
644 return; /* no action, if this is a key release */
647 value = handle_diacr(vc, value);
654 if (kbd->kbdmode == VC_UNICODE)
657 int c = conv_uni_to_8bit(value);
664 * Handle dead key. Note that we now may have several
665 * dead keys modifying the same character. Very useful
668 static void k_deadunicode(struct vc_data *vc, unsigned int value, char up_flag)
672 diacr = (diacr ? handle_diacr(vc, value) : value);
675 static void k_self(struct vc_data *vc, unsigned char value, char up_flag)
678 if (kbd->kbdmode == VC_UNICODE)
681 uni = conv_8bit_to_uni(value);
682 k_unicode(vc, uni, up_flag);
685 static void k_dead2(struct vc_data *vc, unsigned char value, char up_flag)
687 k_deadunicode(vc, value, up_flag);
691 * Obsolete - for backwards compatibility only
693 static void k_dead(struct vc_data *vc, unsigned char value, char up_flag)
695 static const unsigned char ret_diacr[NR_DEAD] = {'`', '\'', '^', '~', '"', ',' };
696 value = ret_diacr[value];
697 k_deadunicode(vc, value, up_flag);
700 static void k_cons(struct vc_data *vc, unsigned char value, char up_flag)
707 static void k_fn(struct vc_data *vc, unsigned char value, char up_flag)
714 if (v < ARRAY_SIZE(func_table)) {
715 if (func_table[value])
716 puts_queue(vc, func_table[value]);
718 printk(KERN_ERR "k_fn called with value=%d\n", value);
721 static void k_cur(struct vc_data *vc, unsigned char value, char up_flag)
723 static const char cur_chars[] = "BDCA";
727 applkey(vc, cur_chars[value], vc_kbd_mode(kbd, VC_CKMODE));
730 static void k_pad(struct vc_data *vc, unsigned char value, char up_flag)
732 static const char pad_chars[] = "0123456789+-*/\015,.?()#";
733 static const char app_map[] = "pqrstuvwxylSRQMnnmPQS";
736 return; /* no action, if this is a key release */
738 /* kludge... shift forces cursor/number keys */
739 if (vc_kbd_mode(kbd, VC_APPLIC) && !shift_down[KG_SHIFT]) {
740 applkey(vc, app_map[value], 1);
744 if (!vc_kbd_led(kbd, VC_NUMLOCK))
748 k_fn(vc, KVAL(K_REMOVE), 0);
751 k_fn(vc, KVAL(K_INSERT), 0);
754 k_fn(vc, KVAL(K_SELECT), 0);
757 k_cur(vc, KVAL(K_DOWN), 0);
760 k_fn(vc, KVAL(K_PGDN), 0);
763 k_cur(vc, KVAL(K_LEFT), 0);
766 k_cur(vc, KVAL(K_RIGHT), 0);
769 k_fn(vc, KVAL(K_FIND), 0);
772 k_cur(vc, KVAL(K_UP), 0);
775 k_fn(vc, KVAL(K_PGUP), 0);
778 applkey(vc, 'G', vc_kbd_mode(kbd, VC_APPLIC));
782 put_queue(vc, pad_chars[value]);
783 if (value == KVAL(K_PENTER) && vc_kbd_mode(kbd, VC_CRLF))
787 static void k_shift(struct vc_data *vc, unsigned char value, char up_flag)
789 int old_state = shift_state;
795 * a CapsShift key acts like Shift but undoes CapsLock
797 if (value == KVAL(K_CAPSSHIFT)) {
798 value = KVAL(K_SHIFT);
800 clr_vc_kbd_led(kbd, VC_CAPSLOCK);
805 * handle the case that two shift or control
806 * keys are depressed simultaneously
808 if (shift_down[value])
813 if (shift_down[value])
814 shift_state |= (1 << value);
816 shift_state &= ~(1 << value);
819 if (up_flag && shift_state != old_state && npadch != -1) {
820 if (kbd->kbdmode == VC_UNICODE)
823 put_queue(vc, npadch & 0xff);
828 static void k_meta(struct vc_data *vc, unsigned char value, char up_flag)
833 if (vc_kbd_mode(kbd, VC_META)) {
834 put_queue(vc, '\033');
835 put_queue(vc, value);
837 put_queue(vc, value | 0x80);
840 static void k_ascii(struct vc_data *vc, unsigned char value, char up_flag)
848 /* decimal input of code, while Alt depressed */
851 /* hexadecimal input of code, while AltGr depressed */
859 npadch = npadch * base + value;
862 static void k_lock(struct vc_data *vc, unsigned char value, char up_flag)
866 chg_vc_kbd_lock(kbd, value);
869 static void k_slock(struct vc_data *vc, unsigned char value, char up_flag)
871 k_shift(vc, value, up_flag);
874 chg_vc_kbd_slock(kbd, value);
875 /* try to make Alt, oops, AltGr and such work */
876 if (!key_maps[kbd->lockstate ^ kbd->slockstate]) {
878 chg_vc_kbd_slock(kbd, value);
882 /* by default, 300ms interval for combination release */
883 static unsigned brl_timeout = 300;
884 MODULE_PARM_DESC(brl_timeout, "Braille keys release delay in ms (0 for commit on first key release)");
885 module_param(brl_timeout, uint, 0644);
887 static unsigned brl_nbchords = 1;
888 MODULE_PARM_DESC(brl_nbchords, "Number of chords that produce a braille pattern (0 for dead chords)");
889 module_param(brl_nbchords, uint, 0644);
891 static void k_brlcommit(struct vc_data *vc, unsigned int pattern, char up_flag)
893 static unsigned long chords;
894 static unsigned committed;
897 k_deadunicode(vc, BRL_UC_ROW | pattern, up_flag);
899 committed |= pattern;
901 if (chords == brl_nbchords) {
902 k_unicode(vc, BRL_UC_ROW | committed, up_flag);
909 static void k_brl(struct vc_data *vc, unsigned char value, char up_flag)
911 static unsigned pressed,committing;
912 static unsigned long releasestart;
914 if (kbd->kbdmode != VC_UNICODE) {
916 printk("keyboard mode must be unicode for braille patterns\n");
921 k_unicode(vc, BRL_UC_ROW, up_flag);
931 jiffies - releasestart > (brl_timeout * HZ) / 1000) {
932 committing = pressed;
933 releasestart = jiffies;
935 pressed &= ~(1 << (value - 1));
938 k_brlcommit(vc, committing, 0);
944 k_brlcommit(vc, committing, 0);
947 pressed &= ~(1 << (value - 1));
950 pressed |= 1 << (value - 1);
952 committing = pressed;
957 * The leds display either (i) the status of NumLock, CapsLock, ScrollLock,
958 * or (ii) whatever pattern of lights people want to show using KDSETLED,
959 * or (iii) specified bits of specified words in kernel memory.
961 unsigned char getledstate(void)
966 void setledstate(struct kbd_struct *kbd, unsigned int led)
970 kbd->ledmode = LED_SHOW_IOCTL;
972 kbd->ledmode = LED_SHOW_FLAGS;
976 static inline unsigned char getleds(void)
978 struct kbd_struct *kbd = kbd_table + fg_console;
982 if (kbd->ledmode == LED_SHOW_IOCTL)
985 leds = kbd->ledflagstate;
987 if (kbd->ledmode == LED_SHOW_MEM) {
988 for (i = 0; i < 3; i++)
989 if (ledptrs[i].valid) {
990 if (*ledptrs[i].addr & ledptrs[i].mask)
1000 * This routine is the bottom half of the keyboard interrupt
1001 * routine, and runs with all interrupts enabled. It does
1002 * console changing, led setting and copy_to_cooked, which can
1003 * take a reasonably long time.
1005 * Aside from timing (which isn't really that important for
1006 * keyboard interrupts as they happen often), using the software
1007 * interrupt routines for this thing allows us to easily mask
1008 * this when we don't want any of the above to happen.
1009 * This allows for easy and efficient race-condition prevention
1010 * for kbd_start => input_inject_event(dev, EV_LED, ...) => ...
1013 static void kbd_bh(unsigned long dummy)
1015 struct list_head *node;
1016 unsigned char leds = getleds();
1018 if (leds != ledstate) {
1019 list_for_each(node, &kbd_handler.h_list) {
1020 struct input_handle *handle = to_handle_h(node);
1021 input_inject_event(handle, EV_LED, LED_SCROLLL, !!(leds & 0x01));
1022 input_inject_event(handle, EV_LED, LED_NUML, !!(leds & 0x02));
1023 input_inject_event(handle, EV_LED, LED_CAPSL, !!(leds & 0x04));
1024 input_inject_event(handle, EV_SYN, SYN_REPORT, 0);
1031 DECLARE_TASKLET_DISABLED(keyboard_tasklet, kbd_bh, 0);
1033 #if defined(CONFIG_X86) || defined(CONFIG_IA64) || defined(CONFIG_ALPHA) ||\
1034 defined(CONFIG_MIPS) || defined(CONFIG_PPC) || defined(CONFIG_SPARC) ||\
1035 defined(CONFIG_PARISC) || defined(CONFIG_SUPERH) ||\
1036 (defined(CONFIG_ARM) && defined(CONFIG_KEYBOARD_ATKBD) && !defined(CONFIG_ARCH_RPC)) ||\
1037 defined(CONFIG_AVR32)
1039 #define HW_RAW(dev) (test_bit(EV_MSC, dev->evbit) && test_bit(MSC_RAW, dev->mscbit) &&\
1040 ((dev)->id.bustype == BUS_I8042) && ((dev)->id.vendor == 0x0001) && ((dev)->id.product == 0x0001))
1042 static const unsigned short x86_keycodes[256] =
1043 { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,
1044 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31,
1045 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47,
1046 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63,
1047 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79,
1048 80, 81, 82, 83, 84,118, 86, 87, 88,115,120,119,121,112,123, 92,
1049 284,285,309, 0,312, 91,327,328,329,331,333,335,336,337,338,339,
1050 367,288,302,304,350, 89,334,326,267,126,268,269,125,347,348,349,
1051 360,261,262,263,268,376,100,101,321,316,373,286,289,102,351,355,
1052 103,104,105,275,287,279,258,106,274,107,294,364,358,363,362,361,
1053 291,108,381,281,290,272,292,305,280, 99,112,257,306,359,113,114,
1054 264,117,271,374,379,265,266, 93, 94, 95, 85,259,375,260, 90,116,
1055 377,109,111,277,278,282,283,295,296,297,299,300,301,293,303,307,
1056 308,310,313,314,315,317,318,319,320,357,322,323,324,325,276,330,
1057 332,340,365,342,343,344,345,346,356,270,341,368,369,370,371,372 };
1060 static int sparc_l1_a_state = 0;
1061 extern void sun_do_break(void);
1064 static int emulate_raw(struct vc_data *vc, unsigned int keycode,
1065 unsigned char up_flag)
1071 put_queue(vc, 0xe1);
1072 put_queue(vc, 0x1d | up_flag);
1073 put_queue(vc, 0x45 | up_flag);
1078 put_queue(vc, 0xf2);
1083 put_queue(vc, 0xf1);
1088 * Real AT keyboards (that's what we're trying
1089 * to emulate here emit 0xe0 0x2a 0xe0 0x37 when
1090 * pressing PrtSc/SysRq alone, but simply 0x54
1091 * when pressing Alt+PrtSc/SysRq.
1094 put_queue(vc, 0x54 | up_flag);
1096 put_queue(vc, 0xe0);
1097 put_queue(vc, 0x2a | up_flag);
1098 put_queue(vc, 0xe0);
1099 put_queue(vc, 0x37 | up_flag);
1107 code = x86_keycodes[keycode];
1112 put_queue(vc, 0xe0);
1113 put_queue(vc, (code & 0x7f) | up_flag);
1123 #define HW_RAW(dev) 0
1125 #warning "Cannot generate rawmode keyboard for your architecture yet."
1127 static int emulate_raw(struct vc_data *vc, unsigned int keycode, unsigned char up_flag)
1132 put_queue(vc, keycode | up_flag);
1137 static void kbd_rawcode(unsigned char data)
1139 struct vc_data *vc = vc_cons[fg_console].d;
1140 kbd = kbd_table + fg_console;
1141 if (kbd->kbdmode == VC_RAW)
1142 put_queue(vc, data);
1145 static void kbd_keycode(unsigned int keycode, int down, int hw_raw)
1147 struct vc_data *vc = vc_cons[fg_console].d;
1148 unsigned short keysym, *key_map;
1149 unsigned char type, raw_mode;
1150 struct tty_struct *tty;
1152 struct keyboard_notifier_param param = { .vc = vc, .value = keycode, .down = down };
1156 if (tty && (!tty->driver_data)) {
1157 /* No driver data? Strange. Okay we fix it then. */
1158 tty->driver_data = vc;
1161 kbd = kbd_table + fg_console;
1163 if (keycode == KEY_LEFTALT || keycode == KEY_RIGHTALT)
1164 sysrq_alt = down ? keycode : 0;
1166 if (keycode == KEY_STOP)
1167 sparc_l1_a_state = down;
1172 #ifdef CONFIG_MAC_EMUMOUSEBTN
1173 if (mac_hid_mouse_emulate_buttons(1, keycode, down))
1175 #endif /* CONFIG_MAC_EMUMOUSEBTN */
1177 if ((raw_mode = (kbd->kbdmode == VC_RAW)) && !hw_raw)
1178 if (emulate_raw(vc, keycode, !down << 7))
1179 if (keycode < BTN_MISC && printk_ratelimit())
1180 printk(KERN_WARNING "keyboard.c: can't emulate rawmode for keycode %d\n", keycode);
1182 #ifdef CONFIG_MAGIC_SYSRQ /* Handle the SysRq Hack */
1183 if (keycode == KEY_SYSRQ && (sysrq_down || (down == 1 && sysrq_alt))) {
1186 sysrq_alt_use = sysrq_alt;
1190 if (sysrq_down && !down && keycode == sysrq_alt_use)
1192 if (sysrq_down && down && !rep) {
1193 handle_sysrq(kbd_sysrq_xlate[keycode], tty);
1198 if (keycode == KEY_A && sparc_l1_a_state) {
1199 sparc_l1_a_state = 0;
1204 if (kbd->kbdmode == VC_MEDIUMRAW) {
1206 * This is extended medium raw mode, with keys above 127
1207 * encoded as 0, high 7 bits, low 7 bits, with the 0 bearing
1208 * the 'up' flag if needed. 0 is reserved, so this shouldn't
1209 * interfere with anything else. The two bytes after 0 will
1210 * always have the up flag set not to interfere with older
1211 * applications. This allows for 16384 different keycodes,
1212 * which should be enough.
1214 if (keycode < 128) {
1215 put_queue(vc, keycode | (!down << 7));
1217 put_queue(vc, !down << 7);
1218 put_queue(vc, (keycode >> 7) | 0x80);
1219 put_queue(vc, keycode | 0x80);
1225 set_bit(keycode, key_down);
1227 clear_bit(keycode, key_down);
1230 (!vc_kbd_mode(kbd, VC_REPEAT) ||
1231 (tty && !L_ECHO(tty) && tty->driver->chars_in_buffer(tty)))) {
1233 * Don't repeat a key if the input buffers are not empty and the
1234 * characters get aren't echoed locally. This makes key repeat
1235 * usable with slow applications and under heavy loads.
1240 param.shift = shift_final = (shift_state | kbd->slockstate) ^ kbd->lockstate;
1241 key_map = key_maps[shift_final];
1243 if (atomic_notifier_call_chain(&keyboard_notifier_list, KBD_KEYCODE, ¶m) == NOTIFY_STOP || !key_map) {
1244 atomic_notifier_call_chain(&keyboard_notifier_list, KBD_UNBOUND_KEYCODE, ¶m);
1245 compute_shiftstate();
1246 kbd->slockstate = 0;
1250 if (keycode > NR_KEYS)
1251 if (keycode >= KEY_BRL_DOT1 && keycode <= KEY_BRL_DOT8)
1252 keysym = K(KT_BRL, keycode - KEY_BRL_DOT1 + 1);
1256 keysym = key_map[keycode];
1258 type = KTYP(keysym);
1261 param.value = keysym;
1262 if (atomic_notifier_call_chain(&keyboard_notifier_list, KBD_UNICODE, ¶m) == NOTIFY_STOP)
1264 if (down && !raw_mode)
1265 to_utf8(vc, keysym);
1271 if (type == KT_LETTER) {
1273 if (vc_kbd_led(kbd, VC_CAPSLOCK)) {
1274 key_map = key_maps[shift_final ^ (1 << KG_SHIFT)];
1276 keysym = key_map[keycode];
1279 param.value = keysym;
1281 if (atomic_notifier_call_chain(&keyboard_notifier_list, KBD_KEYSYM, ¶m) == NOTIFY_STOP)
1284 if (raw_mode && type != KT_SPEC && type != KT_SHIFT)
1287 (*k_handler[type])(vc, keysym & 0xff, !down);
1289 atomic_notifier_call_chain(&keyboard_notifier_list, KBD_POST_KEYSYM, ¶m);
1291 if (type != KT_SLOCK)
1292 kbd->slockstate = 0;
1295 static void kbd_event(struct input_handle *handle, unsigned int event_type,
1296 unsigned int event_code, int value)
1298 if (event_type == EV_MSC && event_code == MSC_RAW && HW_RAW(handle->dev))
1300 if (event_type == EV_KEY)
1301 kbd_keycode(event_code, value, HW_RAW(handle->dev));
1302 tasklet_schedule(&keyboard_tasklet);
1303 do_poke_blanked_console = 1;
1304 schedule_console_callback();
1308 * When a keyboard (or other input device) is found, the kbd_connect
1309 * function is called. The function then looks at the device, and if it
1310 * likes it, it can open it and get events from it. In this (kbd_connect)
1311 * function, we should decide which VT to bind that keyboard to initially.
1313 static int kbd_connect(struct input_handler *handler, struct input_dev *dev,
1314 const struct input_device_id *id)
1316 struct input_handle *handle;
1320 for (i = KEY_RESERVED; i < BTN_MISC; i++)
1321 if (test_bit(i, dev->keybit))
1324 if (i == BTN_MISC && !test_bit(EV_SND, dev->evbit))
1327 handle = kzalloc(sizeof(struct input_handle), GFP_KERNEL);
1332 handle->handler = handler;
1333 handle->name = "kbd";
1335 error = input_register_handle(handle);
1337 goto err_free_handle;
1339 error = input_open_device(handle);
1341 goto err_unregister_handle;
1345 err_unregister_handle:
1346 input_unregister_handle(handle);
1352 static void kbd_disconnect(struct input_handle *handle)
1354 input_close_device(handle);
1355 input_unregister_handle(handle);
1360 * Start keyboard handler on the new keyboard by refreshing LED state to
1361 * match the rest of the system.
1363 static void kbd_start(struct input_handle *handle)
1365 unsigned char leds = ledstate;
1367 tasklet_disable(&keyboard_tasklet);
1369 input_inject_event(handle, EV_LED, LED_SCROLLL, !!(leds & 0x01));
1370 input_inject_event(handle, EV_LED, LED_NUML, !!(leds & 0x02));
1371 input_inject_event(handle, EV_LED, LED_CAPSL, !!(leds & 0x04));
1372 input_inject_event(handle, EV_SYN, SYN_REPORT, 0);
1374 tasklet_enable(&keyboard_tasklet);
1377 static const struct input_device_id kbd_ids[] = {
1379 .flags = INPUT_DEVICE_ID_MATCH_EVBIT,
1380 .evbit = { BIT_MASK(EV_KEY) },
1384 .flags = INPUT_DEVICE_ID_MATCH_EVBIT,
1385 .evbit = { BIT_MASK(EV_SND) },
1388 { }, /* Terminating entry */
1391 MODULE_DEVICE_TABLE(input, kbd_ids);
1393 static struct input_handler kbd_handler = {
1395 .connect = kbd_connect,
1396 .disconnect = kbd_disconnect,
1399 .id_table = kbd_ids,
1402 int __init kbd_init(void)
1407 for (i = 0; i < MAX_NR_CONSOLES; i++) {
1408 kbd_table[i].ledflagstate = KBD_DEFLEDS;
1409 kbd_table[i].default_ledflagstate = KBD_DEFLEDS;
1410 kbd_table[i].ledmode = LED_SHOW_FLAGS;
1411 kbd_table[i].lockstate = KBD_DEFLOCK;
1412 kbd_table[i].slockstate = 0;
1413 kbd_table[i].modeflags = KBD_DEFMODE;
1414 kbd_table[i].kbdmode = default_utf8 ? VC_UNICODE : VC_XLATE;
1417 error = input_register_handler(&kbd_handler);
1421 tasklet_enable(&keyboard_tasklet);
1422 tasklet_schedule(&keyboard_tasklet);