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 #include <linux/kdb.h>
45 #endif /* CONFIG_KDB */
47 extern void ctrl_alt_del(void);
50 * Exported functions/variables
53 #define KBD_DEFMODE ((1 << VC_REPEAT) | (1 << VC_META))
56 * Some laptops take the 789uiojklm,. keys as number pad when NumLock is on.
57 * This seems a good reason to start with NumLock off. On HIL keyboards
58 * of PARISC machines however there is no NumLock key and everyone expects the keypad
59 * to be used for numbers.
62 #if defined(CONFIG_PARISC) && (defined(CONFIG_KEYBOARD_HIL) || defined(CONFIG_KEYBOARD_HIL_OLD))
63 #define KBD_DEFLEDS (1 << VC_NUMLOCK)
70 void compute_shiftstate(void);
77 k_self, k_fn, k_spec, k_pad,\
78 k_dead, k_cons, k_cur, k_shift,\
79 k_meta, k_ascii, k_lock, k_lowercase,\
80 k_slock, k_dead2, k_brl, k_ignore
82 typedef void (k_handler_fn)(struct vc_data *vc, unsigned char value,
84 static k_handler_fn K_HANDLERS;
85 static k_handler_fn *k_handler[16] = { K_HANDLERS };
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[NBITS(KEY_MAX)]; /* 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 * Translation of scancodes to keycodes. We set them on only the first
165 * keyboard in the list that accepts the scancode and keycode.
166 * Explanation for not choosing the first attached keyboard anymore:
167 * USB keyboards for example have two event devices: one for all "normal"
168 * keys and one for extra function keys (like "volume up", "make coffee",
169 * etc.). So this means that scancodes for the extra function keys won't
170 * be valid for the first event device, but will be for the second.
172 int getkeycode(unsigned int scancode)
174 struct input_handle *handle;
178 list_for_each_entry(handle, &kbd_handler.h_list, h_node) {
179 error = handle->dev->getkeycode(handle->dev, scancode, &keycode);
187 int setkeycode(unsigned int scancode, unsigned int keycode)
189 struct input_handle *handle;
192 list_for_each_entry(handle, &kbd_handler.h_list, h_node) {
193 error = handle->dev->setkeycode(handle->dev, scancode, keycode);
202 * Making beeps and bells.
204 static void kd_nosound(unsigned long ignored)
206 struct input_handle *handle;
208 list_for_each_entry(handle, &kbd_handler.h_list, h_node) {
209 if (test_bit(EV_SND, handle->dev->evbit)) {
210 if (test_bit(SND_TONE, handle->dev->sndbit))
211 input_inject_event(handle, EV_SND, SND_TONE, 0);
212 if (test_bit(SND_BELL, handle->dev->sndbit))
213 input_inject_event(handle, EV_SND, SND_BELL, 0);
218 static DEFINE_TIMER(kd_mksound_timer, kd_nosound, 0, 0);
220 void kd_mksound(unsigned int hz, unsigned int ticks)
222 struct list_head *node;
224 del_timer(&kd_mksound_timer);
227 list_for_each_prev(node, &kbd_handler.h_list) {
228 struct input_handle *handle = to_handle_h(node);
229 if (test_bit(EV_SND, handle->dev->evbit)) {
230 if (test_bit(SND_TONE, handle->dev->sndbit)) {
231 input_inject_event(handle, EV_SND, SND_TONE, hz);
234 if (test_bit(SND_BELL, handle->dev->sndbit)) {
235 input_inject_event(handle, EV_SND, SND_BELL, 1);
241 mod_timer(&kd_mksound_timer, jiffies + ticks);
247 * Setting the keyboard rate.
250 int kbd_rate(struct kbd_repeat *rep)
252 struct list_head *node;
256 list_for_each(node, &kbd_handler.h_list) {
257 struct input_handle *handle = to_handle_h(node);
258 struct input_dev *dev = handle->dev;
260 if (test_bit(EV_REP, dev->evbit)) {
262 input_inject_event(handle, EV_REP, REP_DELAY, rep->delay);
264 input_inject_event(handle, EV_REP, REP_PERIOD, rep->period);
265 d = dev->rep[REP_DELAY];
266 p = dev->rep[REP_PERIOD];
277 static void put_queue(struct vc_data *vc, int ch)
279 struct tty_struct *tty = vc->vc_tty;
282 tty_insert_flip_char(tty, ch, 0);
283 con_schedule_flip(tty);
287 static void puts_queue(struct vc_data *vc, char *cp)
289 struct tty_struct *tty = vc->vc_tty;
295 tty_insert_flip_char(tty, *cp, 0);
298 con_schedule_flip(tty);
301 static void applkey(struct vc_data *vc, int key, char mode)
303 static char buf[] = { 0x1b, 'O', 0x00, 0x00 };
305 buf[1] = (mode ? 'O' : '[');
311 * Many other routines do put_queue, but I think either
312 * they produce ASCII, or they produce some user-assigned
313 * string, and in both cases we might assume that it is
314 * in utf-8 already. UTF-8 is defined for words of up to 31 bits,
315 * but we need only 16 bits here
317 static void to_utf8(struct vc_data *vc, ushort c)
322 else if (c < 0x800) {
323 /* 110***** 10****** */
324 put_queue(vc, 0xc0 | (c >> 6));
325 put_queue(vc, 0x80 | (c & 0x3f));
327 /* 1110**** 10****** 10****** */
328 put_queue(vc, 0xe0 | (c >> 12));
329 put_queue(vc, 0x80 | ((c >> 6) & 0x3f));
330 put_queue(vc, 0x80 | (c & 0x3f));
335 * Called after returning from RAW mode or when changing consoles - recompute
336 * shift_down[] and shift_state from key_down[] maybe called when keymap is
337 * undefined, so that shiftkey release is seen
339 void compute_shiftstate(void)
341 unsigned int i, j, k, sym, val;
344 memset(shift_down, 0, sizeof(shift_down));
346 for (i = 0; i < ARRAY_SIZE(key_down); i++) {
351 k = i * BITS_PER_LONG;
353 for (j = 0; j < BITS_PER_LONG; j++, k++) {
355 if (!test_bit(k, key_down))
358 sym = U(key_maps[0][k]);
359 if (KTYP(sym) != KT_SHIFT && KTYP(sym) != KT_SLOCK)
363 if (val == KVAL(K_CAPSSHIFT))
367 shift_state |= (1 << val);
373 * We have a combining character DIACR here, followed by the character CH.
374 * If the combination occurs in the table, return the corresponding value.
375 * Otherwise, if CH is a space or equals DIACR, return DIACR.
376 * Otherwise, conclude that DIACR was not combining after all,
377 * queue it and return CH.
379 static unsigned int handle_diacr(struct vc_data *vc, unsigned int ch)
381 unsigned int d = diacr;
386 if ((d & ~0xff) == BRL_UC_ROW) {
387 if ((ch & ~0xff) == BRL_UC_ROW)
390 for (i = 0; i < accent_table_size; i++)
391 if (accent_table[i].diacr == d && accent_table[i].base == ch)
392 return accent_table[i].result;
395 if (ch == ' ' || ch == (BRL_UC_ROW|0) || ch == d)
398 if (kbd->kbdmode == VC_UNICODE)
407 * Special function handlers
409 static void fn_enter(struct vc_data *vc)
412 if (kbd->kbdmode == VC_UNICODE)
414 else if (diacr < 0x100)
415 put_queue(vc, diacr);
419 if (vc_kbd_mode(kbd, VC_CRLF))
423 static void fn_caps_toggle(struct vc_data *vc)
427 chg_vc_kbd_led(kbd, VC_CAPSLOCK);
430 static void fn_caps_on(struct vc_data *vc)
434 set_vc_kbd_led(kbd, VC_CAPSLOCK);
437 static void fn_show_ptregs(struct vc_data *vc)
439 struct pt_regs *regs = get_irq_regs();
444 static void fn_hold(struct vc_data *vc)
446 struct tty_struct *tty = vc->vc_tty;
452 * Note: SCROLLOCK will be set (cleared) by stop_tty (start_tty);
453 * these routines are also activated by ^S/^Q.
454 * (And SCROLLOCK can also be set by the ioctl KDSKBLED.)
462 static void fn_num(struct vc_data *vc)
464 if (vc_kbd_mode(kbd,VC_APPLIC))
471 * Bind this to Shift-NumLock if you work in application keypad mode
472 * but want to be able to change the NumLock flag.
473 * Bind this to NumLock if you prefer that the NumLock key always
474 * changes the NumLock flag.
476 static void fn_bare_num(struct vc_data *vc)
479 chg_vc_kbd_led(kbd, VC_NUMLOCK);
482 static void fn_lastcons(struct vc_data *vc)
484 /* switch to the last used console, ChN */
485 set_console(last_console);
488 static void fn_dec_console(struct vc_data *vc)
490 int i, cur = fg_console;
492 /* Currently switching? Queue this next switch relative to that. */
493 if (want_console != -1)
496 for (i = cur - 1; i != cur; i--) {
498 i = MAX_NR_CONSOLES - 1;
499 if (vc_cons_allocated(i))
505 static void fn_inc_console(struct vc_data *vc)
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++) {
514 if (i == MAX_NR_CONSOLES)
516 if (vc_cons_allocated(i))
522 static void fn_send_intr(struct vc_data *vc)
524 struct tty_struct *tty = vc->vc_tty;
528 tty_insert_flip_char(tty, 0, TTY_BREAK);
529 con_schedule_flip(tty);
532 static void fn_scroll_forw(struct vc_data *vc)
537 static void fn_scroll_back(struct vc_data *vc)
542 static void fn_show_mem(struct vc_data *vc)
547 static void fn_show_state(struct vc_data *vc)
552 static void fn_boot_it(struct vc_data *vc)
557 static void fn_compose(struct vc_data *vc)
562 static void fn_spawn_con(struct vc_data *vc)
564 spin_lock(&vt_spawn_con.lock);
565 if (vt_spawn_con.pid)
566 if (kill_pid(vt_spawn_con.pid, vt_spawn_con.sig, 1)) {
567 put_pid(vt_spawn_con.pid);
568 vt_spawn_con.pid = NULL;
570 spin_unlock(&vt_spawn_con.lock);
573 static void fn_SAK(struct vc_data *vc)
575 struct work_struct *SAK_work = &vc_cons[fg_console].SAK_work;
576 schedule_work(SAK_work);
579 static void fn_null(struct vc_data *vc)
581 compute_shiftstate();
585 * Special key handlers
587 static void k_ignore(struct vc_data *vc, unsigned char value, char up_flag)
591 static void k_spec(struct vc_data *vc, unsigned char value, char up_flag)
595 if (value >= ARRAY_SIZE(fn_handler))
597 if ((kbd->kbdmode == VC_RAW ||
598 kbd->kbdmode == VC_MEDIUMRAW) &&
599 value != KVAL(K_SAK))
600 return; /* SAK is allowed even in raw mode */
601 fn_handler[value](vc);
604 static void k_lowercase(struct vc_data *vc, unsigned char value, char up_flag)
606 printk(KERN_ERR "keyboard.c: k_lowercase was called - impossible\n");
609 static void k_unicode(struct vc_data *vc, unsigned int value, char up_flag)
612 return; /* no action, if this is a key release */
615 value = handle_diacr(vc, value);
622 if (kbd->kbdmode == VC_UNICODE)
624 else if (value < 0x100)
625 put_queue(vc, value);
629 * Handle dead key. Note that we now may have several
630 * dead keys modifying the same character. Very useful
633 static void k_deadunicode(struct vc_data *vc, unsigned int value, char up_flag)
637 diacr = (diacr ? handle_diacr(vc, value) : value);
640 static void k_self(struct vc_data *vc, unsigned char value, char up_flag)
642 k_unicode(vc, value, up_flag);
645 static void k_dead2(struct vc_data *vc, unsigned char value, char up_flag)
647 k_deadunicode(vc, value, up_flag);
651 * Obsolete - for backwards compatibility only
653 static void k_dead(struct vc_data *vc, unsigned char value, char up_flag)
655 static const unsigned char ret_diacr[NR_DEAD] = {'`', '\'', '^', '~', '"', ',' };
656 value = ret_diacr[value];
657 k_deadunicode(vc, value, up_flag);
660 static void k_cons(struct vc_data *vc, unsigned char value, char up_flag)
667 static void k_fn(struct vc_data *vc, unsigned char value, char up_flag)
674 if (v < ARRAY_SIZE(func_table)) {
675 if (func_table[value])
676 puts_queue(vc, func_table[value]);
678 printk(KERN_ERR "k_fn called with value=%d\n", value);
681 static void k_cur(struct vc_data *vc, unsigned char value, char up_flag)
683 static const char cur_chars[] = "BDCA";
687 applkey(vc, cur_chars[value], vc_kbd_mode(kbd, VC_CKMODE));
690 static void k_pad(struct vc_data *vc, unsigned char value, char up_flag)
692 static const char pad_chars[] = "0123456789+-*/\015,.?()#";
693 static const char app_map[] = "pqrstuvwxylSRQMnnmPQS";
696 return; /* no action, if this is a key release */
698 /* kludge... shift forces cursor/number keys */
699 if (vc_kbd_mode(kbd, VC_APPLIC) && !shift_down[KG_SHIFT]) {
700 applkey(vc, app_map[value], 1);
704 if (!vc_kbd_led(kbd, VC_NUMLOCK))
708 k_fn(vc, KVAL(K_REMOVE), 0);
711 k_fn(vc, KVAL(K_INSERT), 0);
714 k_fn(vc, KVAL(K_SELECT), 0);
717 k_cur(vc, KVAL(K_DOWN), 0);
720 k_fn(vc, KVAL(K_PGDN), 0);
723 k_cur(vc, KVAL(K_LEFT), 0);
726 k_cur(vc, KVAL(K_RIGHT), 0);
729 k_fn(vc, KVAL(K_FIND), 0);
732 k_cur(vc, KVAL(K_UP), 0);
735 k_fn(vc, KVAL(K_PGUP), 0);
738 applkey(vc, 'G', vc_kbd_mode(kbd, VC_APPLIC));
742 put_queue(vc, pad_chars[value]);
743 if (value == KVAL(K_PENTER) && vc_kbd_mode(kbd, VC_CRLF))
747 static void k_shift(struct vc_data *vc, unsigned char value, char up_flag)
749 int old_state = shift_state;
755 * a CapsShift key acts like Shift but undoes CapsLock
757 if (value == KVAL(K_CAPSSHIFT)) {
758 value = KVAL(K_SHIFT);
760 clr_vc_kbd_led(kbd, VC_CAPSLOCK);
765 * handle the case that two shift or control
766 * keys are depressed simultaneously
768 if (shift_down[value])
773 if (shift_down[value])
774 shift_state |= (1 << value);
776 shift_state &= ~(1 << value);
779 if (up_flag && shift_state != old_state && npadch != -1) {
780 if (kbd->kbdmode == VC_UNICODE)
781 to_utf8(vc, npadch & 0xffff);
783 put_queue(vc, npadch & 0xff);
788 static void k_meta(struct vc_data *vc, unsigned char value, char up_flag)
793 if (vc_kbd_mode(kbd, VC_META)) {
794 put_queue(vc, '\033');
795 put_queue(vc, value);
797 put_queue(vc, value | 0x80);
800 static void k_ascii(struct vc_data *vc, unsigned char value, char up_flag)
808 /* decimal input of code, while Alt depressed */
811 /* hexadecimal input of code, while AltGr depressed */
819 npadch = npadch * base + value;
822 static void k_lock(struct vc_data *vc, unsigned char value, char up_flag)
826 chg_vc_kbd_lock(kbd, value);
829 static void k_slock(struct vc_data *vc, unsigned char value, char up_flag)
831 k_shift(vc, value, up_flag);
834 chg_vc_kbd_slock(kbd, value);
835 /* try to make Alt, oops, AltGr and such work */
836 if (!key_maps[kbd->lockstate ^ kbd->slockstate]) {
838 chg_vc_kbd_slock(kbd, value);
842 /* by default, 300ms interval for combination release */
843 static unsigned brl_timeout = 300;
844 MODULE_PARM_DESC(brl_timeout, "Braille keys release delay in ms (0 for commit on first key release)");
845 module_param(brl_timeout, uint, 0644);
847 static unsigned brl_nbchords = 1;
848 MODULE_PARM_DESC(brl_nbchords, "Number of chords that produce a braille pattern (0 for dead chords)");
849 module_param(brl_nbchords, uint, 0644);
851 static void k_brlcommit(struct vc_data *vc, unsigned int pattern, char up_flag)
853 static unsigned long chords;
854 static unsigned committed;
857 k_deadunicode(vc, BRL_UC_ROW | pattern, up_flag);
859 committed |= pattern;
861 if (chords == brl_nbchords) {
862 k_unicode(vc, BRL_UC_ROW | committed, up_flag);
869 static void k_brl(struct vc_data *vc, unsigned char value, char up_flag)
871 static unsigned pressed,committing;
872 static unsigned long releasestart;
874 if (kbd->kbdmode != VC_UNICODE) {
876 printk("keyboard mode must be unicode for braille patterns\n");
881 k_unicode(vc, BRL_UC_ROW, up_flag);
891 jiffies - releasestart > (brl_timeout * HZ) / 1000) {
892 committing = pressed;
893 releasestart = jiffies;
895 pressed &= ~(1 << (value - 1));
898 k_brlcommit(vc, committing, 0);
904 k_brlcommit(vc, committing, 0);
907 pressed &= ~(1 << (value - 1));
910 pressed |= 1 << (value - 1);
912 committing = pressed;
917 * The leds display either (i) the status of NumLock, CapsLock, ScrollLock,
918 * or (ii) whatever pattern of lights people want to show using KDSETLED,
919 * or (iii) specified bits of specified words in kernel memory.
921 unsigned char getledstate(void)
926 void setledstate(struct kbd_struct *kbd, unsigned int led)
930 kbd->ledmode = LED_SHOW_IOCTL;
932 kbd->ledmode = LED_SHOW_FLAGS;
936 static inline unsigned char getleds(void)
938 struct kbd_struct *kbd = kbd_table + fg_console;
942 if (kbd->ledmode == LED_SHOW_IOCTL)
945 leds = kbd->ledflagstate;
947 if (kbd->ledmode == LED_SHOW_MEM) {
948 for (i = 0; i < 3; i++)
949 if (ledptrs[i].valid) {
950 if (*ledptrs[i].addr & ledptrs[i].mask)
960 * This routine is the bottom half of the keyboard interrupt
961 * routine, and runs with all interrupts enabled. It does
962 * console changing, led setting and copy_to_cooked, which can
963 * take a reasonably long time.
965 * Aside from timing (which isn't really that important for
966 * keyboard interrupts as they happen often), using the software
967 * interrupt routines for this thing allows us to easily mask
968 * this when we don't want any of the above to happen.
969 * This allows for easy and efficient race-condition prevention
970 * for kbd_start => input_inject_event(dev, EV_LED, ...) => ...
973 static void kbd_bh(unsigned long dummy)
975 struct list_head *node;
976 unsigned char leds = getleds();
978 if (leds != ledstate) {
979 list_for_each(node, &kbd_handler.h_list) {
980 struct input_handle *handle = to_handle_h(node);
981 input_inject_event(handle, EV_LED, LED_SCROLLL, !!(leds & 0x01));
982 input_inject_event(handle, EV_LED, LED_NUML, !!(leds & 0x02));
983 input_inject_event(handle, EV_LED, LED_CAPSL, !!(leds & 0x04));
984 input_inject_event(handle, EV_SYN, SYN_REPORT, 0);
991 DECLARE_TASKLET_DISABLED(keyboard_tasklet, kbd_bh, 0);
993 #if defined(CONFIG_X86) || defined(CONFIG_IA64) || defined(CONFIG_ALPHA) ||\
994 defined(CONFIG_MIPS) || defined(CONFIG_PPC) || defined(CONFIG_SPARC) ||\
995 defined(CONFIG_PARISC) || defined(CONFIG_SUPERH) ||\
996 (defined(CONFIG_ARM) && defined(CONFIG_KEYBOARD_ATKBD) && !defined(CONFIG_ARCH_RPC))
998 #define HW_RAW(dev) (test_bit(EV_MSC, dev->evbit) && test_bit(MSC_RAW, dev->mscbit) &&\
999 ((dev)->id.bustype == BUS_I8042) && ((dev)->id.vendor == 0x0001) && ((dev)->id.product == 0x0001))
1001 static const unsigned short x86_keycodes[256] =
1002 { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,
1003 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31,
1004 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47,
1005 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63,
1006 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79,
1007 80, 81, 82, 83, 84,118, 86, 87, 88,115,120,119,121,112,123, 92,
1008 284,285,309, 0,312, 91,327,328,329,331,333,335,336,337,338,339,
1009 367,288,302,304,350, 89,334,326,267,126,268,269,125,347,348,349,
1010 360,261,262,263,268,376,100,101,321,316,373,286,289,102,351,355,
1011 103,104,105,275,287,279,306,106,274,107,294,364,358,363,362,361,
1012 291,108,381,281,290,272,292,305,280, 99,112,257,258,359,113,114,
1013 264,117,271,374,379,265,266, 93, 94, 95, 85,259,375,260, 90,116,
1014 377,109,111,277,278,282,283,295,296,297,299,300,301,293,303,307,
1015 308,310,313,314,315,317,318,319,320,357,322,323,324,325,276,330,
1016 332,340,365,342,343,344,345,346,356,270,341,368,369,370,371,372 };
1018 #ifdef CONFIG_MAC_EMUMOUSEBTN
1019 extern int mac_hid_mouse_emulate_buttons(int, int, int);
1020 #endif /* CONFIG_MAC_EMUMOUSEBTN */
1023 static int sparc_l1_a_state = 0;
1024 extern void sun_do_break(void);
1027 static int emulate_raw(struct vc_data *vc, unsigned int keycode,
1028 unsigned char up_flag)
1034 put_queue(vc, 0xe1);
1035 put_queue(vc, 0x1d | up_flag);
1036 put_queue(vc, 0x45 | up_flag);
1041 put_queue(vc, 0xf2);
1046 put_queue(vc, 0xf1);
1051 * Real AT keyboards (that's what we're trying
1052 * to emulate here emit 0xe0 0x2a 0xe0 0x37 when
1053 * pressing PrtSc/SysRq alone, but simply 0x54
1054 * when pressing Alt+PrtSc/SysRq.
1057 put_queue(vc, 0x54 | up_flag);
1059 put_queue(vc, 0xe0);
1060 put_queue(vc, 0x2a | up_flag);
1061 put_queue(vc, 0xe0);
1062 put_queue(vc, 0x37 | up_flag);
1070 code = x86_keycodes[keycode];
1075 put_queue(vc, 0xe0);
1076 put_queue(vc, (code & 0x7f) | 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, int hw_raw)
1110 struct vc_data *vc = vc_cons[fg_console].d;
1111 unsigned short keysym, *key_map;
1112 unsigned char type, raw_mode;
1113 struct tty_struct *tty;
1118 if (tty && (!tty->driver_data)) {
1119 /* No driver data? Strange. Okay we fix it then. */
1120 tty->driver_data = vc;
1123 kbd = kbd_table + fg_console;
1125 if (keycode == KEY_LEFTALT || keycode == KEY_RIGHTALT)
1126 sysrq_alt = down ? keycode : 0;
1128 if (keycode == KEY_STOP)
1129 sparc_l1_a_state = down;
1134 #ifdef CONFIG_MAC_EMUMOUSEBTN
1135 if (mac_hid_mouse_emulate_buttons(1, keycode, down))
1137 #endif /* CONFIG_MAC_EMUMOUSEBTN */
1139 if ((raw_mode = (kbd->kbdmode == VC_RAW)) && !hw_raw)
1140 if (emulate_raw(vc, keycode, !down << 7))
1141 if (keycode < BTN_MISC && printk_ratelimit())
1142 printk(KERN_WARNING "keyboard.c: can't emulate rawmode for keycode %d\n", keycode);
1145 if (down && !rep && keycode == KEY_PAUSE && kdb_on == 1) {
1146 kdb(KDB_REASON_KEYBOARD, 0, get_irq_regs());
1149 #endif /* CONFIG_KDB */
1151 #ifdef CONFIG_BOOTSPLASH
1152 /* This code has to be redone for some non-x86 platforms */
1153 if (down == 1 && (keycode == 0x3c || keycode == 0x01)) { /* F2 and ESC on PC keyboard */
1154 extern int splash_verbose(void);
1155 if (splash_verbose())
1160 #ifdef CONFIG_MAGIC_SYSRQ /* Handle the SysRq Hack */
1161 if (keycode == KEY_SYSRQ && (sysrq_down || (down == 1 && sysrq_alt))) {
1164 sysrq_alt_use = sysrq_alt;
1168 if (sysrq_down && !down && keycode == sysrq_alt_use)
1170 if (sysrq_down && down && !rep) {
1171 handle_sysrq(kbd_sysrq_xlate[keycode], tty);
1176 if (keycode == KEY_A && sparc_l1_a_state) {
1177 sparc_l1_a_state = 0;
1182 if (kbd->kbdmode == VC_MEDIUMRAW) {
1184 * This is extended medium raw mode, with keys above 127
1185 * encoded as 0, high 7 bits, low 7 bits, with the 0 bearing
1186 * the 'up' flag if needed. 0 is reserved, so this shouldn't
1187 * interfere with anything else. The two bytes after 0 will
1188 * always have the up flag set not to interfere with older
1189 * applications. This allows for 16384 different keycodes,
1190 * which should be enough.
1192 if (keycode < 128) {
1193 put_queue(vc, keycode | (!down << 7));
1195 put_queue(vc, !down << 7);
1196 put_queue(vc, (keycode >> 7) | 0x80);
1197 put_queue(vc, keycode | 0x80);
1203 set_bit(keycode, key_down);
1205 clear_bit(keycode, key_down);
1208 (!vc_kbd_mode(kbd, VC_REPEAT) ||
1209 (tty && !L_ECHO(tty) && tty->driver->chars_in_buffer(tty)))) {
1211 * Don't repeat a key if the input buffers are not empty and the
1212 * characters get aren't echoed locally. This makes key repeat
1213 * usable with slow applications and under heavy loads.
1218 shift_final = (shift_state | kbd->slockstate) ^ kbd->lockstate;
1219 key_map = key_maps[shift_final];
1222 compute_shiftstate();
1223 kbd->slockstate = 0;
1227 if (keycode > NR_KEYS)
1228 if (keycode >= KEY_BRL_DOT1 && keycode <= KEY_BRL_DOT8)
1229 keysym = K(KT_BRL, keycode - KEY_BRL_DOT1 + 1);
1233 keysym = key_map[keycode];
1235 type = KTYP(keysym);
1238 if (down && !raw_mode)
1239 to_utf8(vc, keysym);
1245 if (raw_mode && type != KT_SPEC && type != KT_SHIFT)
1248 if (type == KT_LETTER) {
1250 if (vc_kbd_led(kbd, VC_CAPSLOCK)) {
1251 key_map = key_maps[shift_final ^ (1 << KG_SHIFT)];
1253 keysym = key_map[keycode];
1257 (*k_handler[type])(vc, keysym & 0xff, !down);
1259 if (type != KT_SLOCK)
1260 kbd->slockstate = 0;
1263 static void kbd_event(struct input_handle *handle, unsigned int event_type,
1264 unsigned int event_code, int value)
1266 if (event_type == EV_MSC && event_code == MSC_RAW && HW_RAW(handle->dev))
1268 if (event_type == EV_KEY)
1269 kbd_keycode(event_code, value, HW_RAW(handle->dev));
1270 tasklet_schedule(&keyboard_tasklet);
1271 do_poke_blanked_console = 1;
1272 schedule_console_callback();
1276 * When a keyboard (or other input device) is found, the kbd_connect
1277 * function is called. The function then looks at the device, and if it
1278 * likes it, it can open it and get events from it. In this (kbd_connect)
1279 * function, we should decide which VT to bind that keyboard to initially.
1281 static int kbd_connect(struct input_handler *handler, struct input_dev *dev,
1282 const struct input_device_id *id)
1284 struct input_handle *handle;
1288 for (i = KEY_RESERVED; i < BTN_MISC; i++)
1289 if (test_bit(i, dev->keybit))
1292 if (i == BTN_MISC && !test_bit(EV_SND, dev->evbit))
1295 handle = kzalloc(sizeof(struct input_handle), GFP_KERNEL);
1300 handle->handler = handler;
1301 handle->name = "kbd";
1303 error = input_register_handle(handle);
1305 goto err_free_handle;
1307 error = input_open_device(handle);
1309 goto err_unregister_handle;
1313 err_unregister_handle:
1314 input_unregister_handle(handle);
1320 static void kbd_disconnect(struct input_handle *handle)
1322 input_close_device(handle);
1323 input_unregister_handle(handle);
1328 * Start keyboard handler on the new keyboard by refreshing LED state to
1329 * match the rest of the system.
1331 static void kbd_start(struct input_handle *handle)
1333 unsigned char leds = ledstate;
1335 tasklet_disable(&keyboard_tasklet);
1337 input_inject_event(handle, EV_LED, LED_SCROLLL, !!(leds & 0x01));
1338 input_inject_event(handle, EV_LED, LED_NUML, !!(leds & 0x02));
1339 input_inject_event(handle, EV_LED, LED_CAPSL, !!(leds & 0x04));
1340 input_inject_event(handle, EV_SYN, SYN_REPORT, 0);
1342 tasklet_enable(&keyboard_tasklet);
1345 static const struct input_device_id kbd_ids[] = {
1347 .flags = INPUT_DEVICE_ID_MATCH_EVBIT,
1348 .evbit = { BIT(EV_KEY) },
1352 .flags = INPUT_DEVICE_ID_MATCH_EVBIT,
1353 .evbit = { BIT(EV_SND) },
1356 { }, /* Terminating entry */
1359 MODULE_DEVICE_TABLE(input, kbd_ids);
1361 static struct input_handler kbd_handler = {
1363 .connect = kbd_connect,
1364 .disconnect = kbd_disconnect,
1367 .id_table = kbd_ids,
1370 int __init kbd_init(void)
1375 for (i = 0; i < MAX_NR_CONSOLES; i++) {
1376 kbd_table[i].ledflagstate = KBD_DEFLEDS;
1377 kbd_table[i].default_ledflagstate = KBD_DEFLEDS;
1378 kbd_table[i].ledmode = LED_SHOW_FLAGS;
1379 kbd_table[i].lockstate = KBD_DEFLOCK;
1380 kbd_table[i].slockstate = 0;
1381 kbd_table[i].modeflags = KBD_DEFMODE;
1382 kbd_table[i].kbdmode = VC_XLATE;
1385 error = input_register_handler(&kbd_handler);
1389 tasklet_enable(&keyboard_tasklet);
1390 tasklet_schedule(&keyboard_tasklet);