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>
45 #include <linux/jiffies.h>
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 k_handler_fn
*k_handler
[16] = { K_HANDLERS
};
86 EXPORT_SYMBOL_GPL(k_handler
);
89 fn_null, fn_enter, fn_show_ptregs, fn_show_mem,\
90 fn_show_state, fn_send_intr, fn_lastcons, fn_caps_toggle,\
91 fn_num, fn_hold, fn_scroll_forw, fn_scroll_back,\
92 fn_boot_it, fn_caps_on, fn_compose, fn_SAK,\
93 fn_dec_console, fn_inc_console, fn_spawn_con, fn_bare_num
95 typedef void (fn_handler_fn
)(struct vc_data
*vc
);
96 static fn_handler_fn FN_HANDLERS
;
97 static fn_handler_fn
*fn_handler
[] = { FN_HANDLERS
};
100 * Variables exported for vt_ioctl.c
103 /* maximum values each key_handler can handle */
104 const int max_vals
[] = {
105 255, ARRAY_SIZE(func_table
) - 1, ARRAY_SIZE(fn_handler
) - 1, NR_PAD
- 1,
106 NR_DEAD
- 1, 255, 3, NR_SHIFT
- 1, 255, NR_ASCII
- 1, NR_LOCK
- 1,
107 255, NR_LOCK
- 1, 255, NR_BRL
- 1
110 const int NR_TYPES
= ARRAY_SIZE(max_vals
);
112 struct kbd_struct kbd_table
[MAX_NR_CONSOLES
];
113 EXPORT_SYMBOL_GPL(kbd_table
);
114 static struct kbd_struct
*kbd
= kbd_table
;
116 struct vt_spawn_console vt_spawn_con
= {
117 .lock
= __SPIN_LOCK_UNLOCKED(vt_spawn_con
.lock
),
123 * Variables exported for vt.c
132 static struct input_handler kbd_handler
;
133 static DEFINE_SPINLOCK(kbd_event_lock
);
134 static unsigned long key_down
[BITS_TO_LONGS(KEY_CNT
)]; /* keyboard key bitmap */
135 static unsigned char shift_down
[NR_SHIFT
]; /* shift state counters.. */
136 static int dead_key_next
;
137 static int npadch
= -1; /* -1 or number assembled on pad */
138 static unsigned int diacr
;
139 static char rep
; /* flag telling character repeat */
141 static unsigned char ledstate
= 0xff; /* undefined */
142 static unsigned char ledioctl
;
144 static struct ledptr
{
147 unsigned char valid
:1;
150 /* Simple translation table for the SysRq keys */
152 #ifdef CONFIG_MAGIC_SYSRQ
153 unsigned char kbd_sysrq_xlate
[KEY_MAX
+ 1] =
154 "\000\0331234567890-=\177\t" /* 0x00 - 0x0f */
155 "qwertyuiop[]\r\000as" /* 0x10 - 0x1f */
156 "dfghjkl;'`\000\\zxcv" /* 0x20 - 0x2f */
157 "bnm,./\000*\000 \000\201\202\203\204\205" /* 0x30 - 0x3f */
158 "\206\207\210\211\212\000\000789-456+1" /* 0x40 - 0x4f */
159 "230\177\000\000\213\214\000\000\000\000\000\000\000\000\000\000" /* 0x50 - 0x5f */
160 "\r\000/"; /* 0x60 - 0x6f */
161 static int sysrq_down
;
162 static int sysrq_alt_use
;
164 static int sysrq_alt
;
167 * Notifier list for console keyboard events
169 static ATOMIC_NOTIFIER_HEAD(keyboard_notifier_list
);
171 int register_keyboard_notifier(struct notifier_block
*nb
)
173 return atomic_notifier_chain_register(&keyboard_notifier_list
, nb
);
175 EXPORT_SYMBOL_GPL(register_keyboard_notifier
);
177 int unregister_keyboard_notifier(struct notifier_block
*nb
)
179 return atomic_notifier_chain_unregister(&keyboard_notifier_list
, nb
);
181 EXPORT_SYMBOL_GPL(unregister_keyboard_notifier
);
184 * Translation of scancodes to keycodes. We set them on only the first
185 * keyboard in the list that accepts the scancode and keycode.
186 * Explanation for not choosing the first attached keyboard anymore:
187 * USB keyboards for example have two event devices: one for all "normal"
188 * keys and one for extra function keys (like "volume up", "make coffee",
189 * etc.). So this means that scancodes for the extra function keys won't
190 * be valid for the first event device, but will be for the second.
193 struct getset_keycode_data
{
194 unsigned int scancode
;
195 unsigned int keycode
;
199 static int getkeycode_helper(struct input_handle
*handle
, void *data
)
201 struct getset_keycode_data
*d
= data
;
203 d
->error
= input_get_keycode(handle
->dev
, d
->scancode
, &d
->keycode
);
205 return d
->error
== 0; /* stop as soon as we successfully get one */
208 int getkeycode(unsigned int scancode
)
210 struct getset_keycode_data d
= { scancode
, 0, -ENODEV
};
212 input_handler_for_each_handle(&kbd_handler
, &d
, getkeycode_helper
);
214 return d
.error
?: d
.keycode
;
217 static int setkeycode_helper(struct input_handle
*handle
, void *data
)
219 struct getset_keycode_data
*d
= data
;
221 d
->error
= input_set_keycode(handle
->dev
, d
->scancode
, d
->keycode
);
223 return d
->error
== 0; /* stop as soon as we successfully set one */
226 int setkeycode(unsigned int scancode
, unsigned int keycode
)
228 struct getset_keycode_data d
= { scancode
, keycode
, -ENODEV
};
230 input_handler_for_each_handle(&kbd_handler
, &d
, setkeycode_helper
);
236 * Making beeps and bells.
239 static int kd_sound_helper(struct input_handle
*handle
, void *data
)
241 unsigned int *hz
= data
;
242 struct input_dev
*dev
= handle
->dev
;
244 if (test_bit(EV_SND
, dev
->evbit
)) {
245 if (test_bit(SND_TONE
, dev
->sndbit
))
246 input_inject_event(handle
, EV_SND
, SND_TONE
, *hz
);
247 if (test_bit(SND_BELL
, handle
->dev
->sndbit
))
248 input_inject_event(handle
, EV_SND
, SND_BELL
, *hz
? 1 : 0);
254 static void kd_nosound(unsigned long ignored
)
256 static unsigned int zero
;
258 input_handler_for_each_handle(&kbd_handler
, &zero
, kd_sound_helper
);
261 static DEFINE_TIMER(kd_mksound_timer
, kd_nosound
, 0, 0);
263 void kd_mksound(unsigned int hz
, unsigned int ticks
)
265 del_timer_sync(&kd_mksound_timer
);
267 input_handler_for_each_handle(&kbd_handler
, &hz
, kd_sound_helper
);
270 mod_timer(&kd_mksound_timer
, jiffies
+ ticks
);
272 EXPORT_SYMBOL(kd_mksound
);
275 * Setting the keyboard rate.
278 static int kbd_rate_helper(struct input_handle
*handle
, void *data
)
280 struct input_dev
*dev
= handle
->dev
;
281 struct kbd_repeat
*rep
= data
;
283 if (test_bit(EV_REP
, dev
->evbit
)) {
285 if (rep
[0].delay
> 0)
286 input_inject_event(handle
,
287 EV_REP
, REP_DELAY
, rep
[0].delay
);
288 if (rep
[0].period
> 0)
289 input_inject_event(handle
,
290 EV_REP
, REP_PERIOD
, rep
[0].period
);
292 rep
[1].delay
= dev
->rep
[REP_DELAY
];
293 rep
[1].period
= dev
->rep
[REP_PERIOD
];
299 int kbd_rate(struct kbd_repeat
*rep
)
301 struct kbd_repeat data
[2] = { *rep
};
303 input_handler_for_each_handle(&kbd_handler
, data
, kbd_rate_helper
);
304 *rep
= data
[1]; /* Copy currently used settings */
312 static void put_queue(struct vc_data
*vc
, int ch
)
314 struct tty_struct
*tty
= vc
->vc_tty
;
317 tty_insert_flip_char(tty
, ch
, 0);
318 con_schedule_flip(tty
);
322 static void puts_queue(struct vc_data
*vc
, char *cp
)
324 struct tty_struct
*tty
= vc
->vc_tty
;
330 tty_insert_flip_char(tty
, *cp
, 0);
333 con_schedule_flip(tty
);
336 static void applkey(struct vc_data
*vc
, int key
, char mode
)
338 static char buf
[] = { 0x1b, 'O', 0x00, 0x00 };
340 buf
[1] = (mode
? 'O' : '[');
346 * Many other routines do put_queue, but I think either
347 * they produce ASCII, or they produce some user-assigned
348 * string, and in both cases we might assume that it is
351 static void to_utf8(struct vc_data
*vc
, uint c
)
356 else if (c
< 0x800) {
357 /* 110***** 10****** */
358 put_queue(vc
, 0xc0 | (c
>> 6));
359 put_queue(vc
, 0x80 | (c
& 0x3f));
360 } else if (c
< 0x10000) {
361 if (c
>= 0xD800 && c
< 0xE000)
365 /* 1110**** 10****** 10****** */
366 put_queue(vc
, 0xe0 | (c
>> 12));
367 put_queue(vc
, 0x80 | ((c
>> 6) & 0x3f));
368 put_queue(vc
, 0x80 | (c
& 0x3f));
369 } else if (c
< 0x110000) {
370 /* 11110*** 10****** 10****** 10****** */
371 put_queue(vc
, 0xf0 | (c
>> 18));
372 put_queue(vc
, 0x80 | ((c
>> 12) & 0x3f));
373 put_queue(vc
, 0x80 | ((c
>> 6) & 0x3f));
374 put_queue(vc
, 0x80 | (c
& 0x3f));
379 * Called after returning from RAW mode or when changing consoles - recompute
380 * shift_down[] and shift_state from key_down[] maybe called when keymap is
381 * undefined, so that shiftkey release is seen
383 void compute_shiftstate(void)
385 unsigned int i
, j
, k
, sym
, val
;
388 memset(shift_down
, 0, sizeof(shift_down
));
390 for (i
= 0; i
< ARRAY_SIZE(key_down
); i
++) {
395 k
= i
* BITS_PER_LONG
;
397 for (j
= 0; j
< BITS_PER_LONG
; j
++, k
++) {
399 if (!test_bit(k
, key_down
))
402 sym
= U(key_maps
[0][k
]);
403 if (KTYP(sym
) != KT_SHIFT
&& KTYP(sym
) != KT_SLOCK
)
407 if (val
== KVAL(K_CAPSSHIFT
))
411 shift_state
|= (1 << val
);
417 * We have a combining character DIACR here, followed by the character CH.
418 * If the combination occurs in the table, return the corresponding value.
419 * Otherwise, if CH is a space or equals DIACR, return DIACR.
420 * Otherwise, conclude that DIACR was not combining after all,
421 * queue it and return CH.
423 static unsigned int handle_diacr(struct vc_data
*vc
, unsigned int ch
)
425 unsigned int d
= diacr
;
430 if ((d
& ~0xff) == BRL_UC_ROW
) {
431 if ((ch
& ~0xff) == BRL_UC_ROW
)
434 for (i
= 0; i
< accent_table_size
; i
++)
435 if (accent_table
[i
].diacr
== d
&& accent_table
[i
].base
== ch
)
436 return accent_table
[i
].result
;
439 if (ch
== ' ' || ch
== (BRL_UC_ROW
|0) || ch
== d
)
442 if (kbd
->kbdmode
== VC_UNICODE
)
445 int c
= conv_uni_to_8bit(d
);
454 * Special function handlers
456 static void fn_enter(struct vc_data
*vc
)
459 if (kbd
->kbdmode
== VC_UNICODE
)
462 int c
= conv_uni_to_8bit(diacr
);
469 if (vc_kbd_mode(kbd
, VC_CRLF
))
473 static void fn_caps_toggle(struct vc_data
*vc
)
477 chg_vc_kbd_led(kbd
, VC_CAPSLOCK
);
480 static void fn_caps_on(struct vc_data
*vc
)
484 set_vc_kbd_led(kbd
, VC_CAPSLOCK
);
487 static void fn_show_ptregs(struct vc_data
*vc
)
489 struct pt_regs
*regs
= get_irq_regs();
494 static void fn_hold(struct vc_data
*vc
)
496 struct tty_struct
*tty
= vc
->vc_tty
;
502 * Note: SCROLLOCK will be set (cleared) by stop_tty (start_tty);
503 * these routines are also activated by ^S/^Q.
504 * (And SCROLLOCK can also be set by the ioctl KDSKBLED.)
512 static void fn_num(struct vc_data
*vc
)
514 if (vc_kbd_mode(kbd
,VC_APPLIC
))
521 * Bind this to Shift-NumLock if you work in application keypad mode
522 * but want to be able to change the NumLock flag.
523 * Bind this to NumLock if you prefer that the NumLock key always
524 * changes the NumLock flag.
526 static void fn_bare_num(struct vc_data
*vc
)
529 chg_vc_kbd_led(kbd
, VC_NUMLOCK
);
532 static void fn_lastcons(struct vc_data
*vc
)
534 /* switch to the last used console, ChN */
535 set_console(last_console
);
538 static void fn_dec_console(struct vc_data
*vc
)
540 int i
, cur
= fg_console
;
542 /* Currently switching? Queue this next switch relative to that. */
543 if (want_console
!= -1)
546 for (i
= cur
- 1; i
!= cur
; i
--) {
548 i
= MAX_NR_CONSOLES
- 1;
549 if (vc_cons_allocated(i
))
555 static void fn_inc_console(struct vc_data
*vc
)
557 int i
, cur
= fg_console
;
559 /* Currently switching? Queue this next switch relative to that. */
560 if (want_console
!= -1)
563 for (i
= cur
+1; i
!= cur
; i
++) {
564 if (i
== MAX_NR_CONSOLES
)
566 if (vc_cons_allocated(i
))
572 static void fn_send_intr(struct vc_data
*vc
)
574 struct tty_struct
*tty
= vc
->vc_tty
;
578 tty_insert_flip_char(tty
, 0, TTY_BREAK
);
579 con_schedule_flip(tty
);
582 static void fn_scroll_forw(struct vc_data
*vc
)
587 static void fn_scroll_back(struct vc_data
*vc
)
592 static void fn_show_mem(struct vc_data
*vc
)
597 static void fn_show_state(struct vc_data
*vc
)
602 static void fn_boot_it(struct vc_data
*vc
)
607 static void fn_compose(struct vc_data
*vc
)
612 static void fn_spawn_con(struct vc_data
*vc
)
614 spin_lock(&vt_spawn_con
.lock
);
615 if (vt_spawn_con
.pid
)
616 if (kill_pid(vt_spawn_con
.pid
, vt_spawn_con
.sig
, 1)) {
617 put_pid(vt_spawn_con
.pid
);
618 vt_spawn_con
.pid
= NULL
;
620 spin_unlock(&vt_spawn_con
.lock
);
623 static void fn_SAK(struct vc_data
*vc
)
625 struct work_struct
*SAK_work
= &vc_cons
[fg_console
].SAK_work
;
626 schedule_work(SAK_work
);
629 static void fn_null(struct vc_data
*vc
)
631 compute_shiftstate();
635 * Special key handlers
637 static void k_ignore(struct vc_data
*vc
, unsigned char value
, char up_flag
)
641 static void k_spec(struct vc_data
*vc
, unsigned char value
, char up_flag
)
645 if (value
>= ARRAY_SIZE(fn_handler
))
647 if ((kbd
->kbdmode
== VC_RAW
||
648 kbd
->kbdmode
== VC_MEDIUMRAW
) &&
649 value
!= KVAL(K_SAK
))
650 return; /* SAK is allowed even in raw mode */
651 fn_handler
[value
](vc
);
654 static void k_lowercase(struct vc_data
*vc
, unsigned char value
, char up_flag
)
656 printk(KERN_ERR
"keyboard.c: k_lowercase was called - impossible\n");
659 static void k_unicode(struct vc_data
*vc
, unsigned int value
, char up_flag
)
662 return; /* no action, if this is a key release */
665 value
= handle_diacr(vc
, value
);
672 if (kbd
->kbdmode
== VC_UNICODE
)
675 int c
= conv_uni_to_8bit(value
);
682 * Handle dead key. Note that we now may have several
683 * dead keys modifying the same character. Very useful
686 static void k_deadunicode(struct vc_data
*vc
, unsigned int value
, char up_flag
)
690 diacr
= (diacr
? handle_diacr(vc
, value
) : value
);
693 static void k_self(struct vc_data
*vc
, unsigned char value
, char up_flag
)
695 k_unicode(vc
, conv_8bit_to_uni(value
), up_flag
);
698 static void k_dead2(struct vc_data
*vc
, unsigned char value
, char up_flag
)
700 k_deadunicode(vc
, value
, up_flag
);
704 * Obsolete - for backwards compatibility only
706 static void k_dead(struct vc_data
*vc
, unsigned char value
, char up_flag
)
708 static const unsigned char ret_diacr
[NR_DEAD
] = {'`', '\'', '^', '~', '"', ',' };
709 value
= ret_diacr
[value
];
710 k_deadunicode(vc
, value
, up_flag
);
713 static void k_cons(struct vc_data
*vc
, unsigned char value
, char up_flag
)
720 static void k_fn(struct vc_data
*vc
, unsigned char value
, char up_flag
)
727 if (v
< ARRAY_SIZE(func_table
)) {
728 if (func_table
[value
])
729 puts_queue(vc
, func_table
[value
]);
731 printk(KERN_ERR
"k_fn called with value=%d\n", value
);
734 static void k_cur(struct vc_data
*vc
, unsigned char value
, char up_flag
)
736 static const char cur_chars
[] = "BDCA";
740 applkey(vc
, cur_chars
[value
], vc_kbd_mode(kbd
, VC_CKMODE
));
743 static void k_pad(struct vc_data
*vc
, unsigned char value
, char up_flag
)
745 static const char pad_chars
[] = "0123456789+-*/\015,.?()#";
746 static const char app_map
[] = "pqrstuvwxylSRQMnnmPQS";
749 return; /* no action, if this is a key release */
751 /* kludge... shift forces cursor/number keys */
752 if (vc_kbd_mode(kbd
, VC_APPLIC
) && !shift_down
[KG_SHIFT
]) {
753 applkey(vc
, app_map
[value
], 1);
757 if (!vc_kbd_led(kbd
, VC_NUMLOCK
))
761 k_fn(vc
, KVAL(K_REMOVE
), 0);
764 k_fn(vc
, KVAL(K_INSERT
), 0);
767 k_fn(vc
, KVAL(K_SELECT
), 0);
770 k_cur(vc
, KVAL(K_DOWN
), 0);
773 k_fn(vc
, KVAL(K_PGDN
), 0);
776 k_cur(vc
, KVAL(K_LEFT
), 0);
779 k_cur(vc
, KVAL(K_RIGHT
), 0);
782 k_fn(vc
, KVAL(K_FIND
), 0);
785 k_cur(vc
, KVAL(K_UP
), 0);
788 k_fn(vc
, KVAL(K_PGUP
), 0);
791 applkey(vc
, 'G', vc_kbd_mode(kbd
, VC_APPLIC
));
795 put_queue(vc
, pad_chars
[value
]);
796 if (value
== KVAL(K_PENTER
) && vc_kbd_mode(kbd
, VC_CRLF
))
800 static void k_shift(struct vc_data
*vc
, unsigned char value
, char up_flag
)
802 int old_state
= shift_state
;
808 * a CapsShift key acts like Shift but undoes CapsLock
810 if (value
== KVAL(K_CAPSSHIFT
)) {
811 value
= KVAL(K_SHIFT
);
813 clr_vc_kbd_led(kbd
, VC_CAPSLOCK
);
818 * handle the case that two shift or control
819 * keys are depressed simultaneously
821 if (shift_down
[value
])
826 if (shift_down
[value
])
827 shift_state
|= (1 << value
);
829 shift_state
&= ~(1 << value
);
832 if (up_flag
&& shift_state
!= old_state
&& npadch
!= -1) {
833 if (kbd
->kbdmode
== VC_UNICODE
)
836 put_queue(vc
, npadch
& 0xff);
841 static void k_meta(struct vc_data
*vc
, unsigned char value
, char up_flag
)
846 if (vc_kbd_mode(kbd
, VC_META
)) {
847 put_queue(vc
, '\033');
848 put_queue(vc
, value
);
850 put_queue(vc
, value
| 0x80);
853 static void k_ascii(struct vc_data
*vc
, unsigned char value
, char up_flag
)
861 /* decimal input of code, while Alt depressed */
864 /* hexadecimal input of code, while AltGr depressed */
872 npadch
= npadch
* base
+ value
;
875 static void k_lock(struct vc_data
*vc
, unsigned char value
, char up_flag
)
879 chg_vc_kbd_lock(kbd
, value
);
882 static void k_slock(struct vc_data
*vc
, unsigned char value
, char up_flag
)
884 k_shift(vc
, value
, up_flag
);
887 chg_vc_kbd_slock(kbd
, value
);
888 /* try to make Alt, oops, AltGr and such work */
889 if (!key_maps
[kbd
->lockstate
^ kbd
->slockstate
]) {
891 chg_vc_kbd_slock(kbd
, value
);
895 /* by default, 300ms interval for combination release */
896 static unsigned brl_timeout
= 300;
897 MODULE_PARM_DESC(brl_timeout
, "Braille keys release delay in ms (0 for commit on first key release)");
898 module_param(brl_timeout
, uint
, 0644);
900 static unsigned brl_nbchords
= 1;
901 MODULE_PARM_DESC(brl_nbchords
, "Number of chords that produce a braille pattern (0 for dead chords)");
902 module_param(brl_nbchords
, uint
, 0644);
904 static void k_brlcommit(struct vc_data
*vc
, unsigned int pattern
, char up_flag
)
906 static unsigned long chords
;
907 static unsigned committed
;
910 k_deadunicode(vc
, BRL_UC_ROW
| pattern
, up_flag
);
912 committed
|= pattern
;
914 if (chords
== brl_nbchords
) {
915 k_unicode(vc
, BRL_UC_ROW
| committed
, up_flag
);
922 static void k_brl(struct vc_data
*vc
, unsigned char value
, char up_flag
)
924 static unsigned pressed
,committing
;
925 static unsigned long releasestart
;
927 if (kbd
->kbdmode
!= VC_UNICODE
) {
929 printk("keyboard mode must be unicode for braille patterns\n");
934 k_unicode(vc
, BRL_UC_ROW
, up_flag
);
945 releasestart
+ msecs_to_jiffies(brl_timeout
))) {
946 committing
= pressed
;
947 releasestart
= jiffies
;
949 pressed
&= ~(1 << (value
- 1));
952 k_brlcommit(vc
, committing
, 0);
958 k_brlcommit(vc
, committing
, 0);
961 pressed
&= ~(1 << (value
- 1));
964 pressed
|= 1 << (value
- 1);
966 committing
= pressed
;
971 * The leds display either (i) the status of NumLock, CapsLock, ScrollLock,
972 * or (ii) whatever pattern of lights people want to show using KDSETLED,
973 * or (iii) specified bits of specified words in kernel memory.
975 unsigned char getledstate(void)
980 void setledstate(struct kbd_struct
*kbd
, unsigned int led
)
984 kbd
->ledmode
= LED_SHOW_IOCTL
;
986 kbd
->ledmode
= LED_SHOW_FLAGS
;
990 static inline unsigned char getleds(void)
992 struct kbd_struct
*kbd
= kbd_table
+ fg_console
;
996 if (kbd
->ledmode
== LED_SHOW_IOCTL
)
999 leds
= kbd
->ledflagstate
;
1001 if (kbd
->ledmode
== LED_SHOW_MEM
) {
1002 for (i
= 0; i
< 3; i
++)
1003 if (ledptrs
[i
].valid
) {
1004 if (*ledptrs
[i
].addr
& ledptrs
[i
].mask
)
1013 static int kbd_update_leds_helper(struct input_handle
*handle
, void *data
)
1015 unsigned char leds
= *(unsigned char *)data
;
1017 if (test_bit(EV_LED
, handle
->dev
->evbit
)) {
1018 input_inject_event(handle
, EV_LED
, LED_SCROLLL
, !!(leds
& 0x01));
1019 input_inject_event(handle
, EV_LED
, LED_NUML
, !!(leds
& 0x02));
1020 input_inject_event(handle
, EV_LED
, LED_CAPSL
, !!(leds
& 0x04));
1021 input_inject_event(handle
, EV_SYN
, SYN_REPORT
, 0);
1028 * This is the tasklet that updates LED state on all keyboards
1029 * attached to the box. The reason we use tasklet is that we
1030 * need to handle the scenario when keyboard handler is not
1031 * registered yet but we already getting updates form VT to
1034 static void kbd_bh(unsigned long dummy
)
1036 unsigned char leds
= getleds();
1038 if (leds
!= ledstate
) {
1039 input_handler_for_each_handle(&kbd_handler
, &leds
,
1040 kbd_update_leds_helper
);
1045 DECLARE_TASKLET_DISABLED(keyboard_tasklet
, kbd_bh
, 0);
1047 #if defined(CONFIG_X86) || defined(CONFIG_IA64) || defined(CONFIG_ALPHA) ||\
1048 defined(CONFIG_MIPS) || defined(CONFIG_PPC) || defined(CONFIG_SPARC) ||\
1049 defined(CONFIG_PARISC) || defined(CONFIG_SUPERH) ||\
1050 (defined(CONFIG_ARM) && defined(CONFIG_KEYBOARD_ATKBD) && !defined(CONFIG_ARCH_RPC)) ||\
1051 defined(CONFIG_AVR32)
1053 #define HW_RAW(dev) (test_bit(EV_MSC, dev->evbit) && test_bit(MSC_RAW, dev->mscbit) &&\
1054 ((dev)->id.bustype == BUS_I8042) && ((dev)->id.vendor == 0x0001) && ((dev)->id.product == 0x0001))
1056 static const unsigned short x86_keycodes
[256] =
1057 { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,
1058 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31,
1059 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47,
1060 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63,
1061 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79,
1062 80, 81, 82, 83, 84,118, 86, 87, 88,115,120,119,121,112,123, 92,
1063 284,285,309, 0,312, 91,327,328,329,331,333,335,336,337,338,339,
1064 367,288,302,304,350, 89,334,326,267,126,268,269,125,347,348,349,
1065 360,261,262,263,268,376,100,101,321,316,373,286,289,102,351,355,
1066 103,104,105,275,287,279,258,106,274,107,294,364,358,363,362,361,
1067 291,108,381,281,290,272,292,305,280, 99,112,257,306,359,113,114,
1068 264,117,271,374,379,265,266, 93, 94, 95, 85,259,375,260, 90,116,
1069 377,109,111,277,278,282,283,295,296,297,299,300,301,293,303,307,
1070 308,310,313,314,315,317,318,319,320,357,322,323,324,325,276,330,
1071 332,340,365,342,343,344,345,346,356,270,341,368,369,370,371,372 };
1074 static int sparc_l1_a_state
= 0;
1075 extern void sun_do_break(void);
1078 static int emulate_raw(struct vc_data
*vc
, unsigned int keycode
,
1079 unsigned char up_flag
)
1085 put_queue(vc
, 0xe1);
1086 put_queue(vc
, 0x1d | up_flag
);
1087 put_queue(vc
, 0x45 | up_flag
);
1092 put_queue(vc
, 0xf2);
1097 put_queue(vc
, 0xf1);
1102 * Real AT keyboards (that's what we're trying
1103 * to emulate here emit 0xe0 0x2a 0xe0 0x37 when
1104 * pressing PrtSc/SysRq alone, but simply 0x54
1105 * when pressing Alt+PrtSc/SysRq.
1108 put_queue(vc
, 0x54 | up_flag
);
1110 put_queue(vc
, 0xe0);
1111 put_queue(vc
, 0x2a | up_flag
);
1112 put_queue(vc
, 0xe0);
1113 put_queue(vc
, 0x37 | up_flag
);
1121 code
= x86_keycodes
[keycode
];
1126 put_queue(vc
, 0xe0);
1127 put_queue(vc
, (code
& 0x7f) | up_flag
);
1137 #define HW_RAW(dev) 0
1139 static int emulate_raw(struct vc_data
*vc
, unsigned int keycode
, unsigned char up_flag
)
1144 put_queue(vc
, keycode
| up_flag
);
1149 static void kbd_rawcode(unsigned char data
)
1151 struct vc_data
*vc
= vc_cons
[fg_console
].d
;
1152 kbd
= kbd_table
+ vc
->vc_num
;
1153 if (kbd
->kbdmode
== VC_RAW
)
1154 put_queue(vc
, data
);
1157 static void kbd_keycode(unsigned int keycode
, int down
, int hw_raw
)
1159 struct vc_data
*vc
= vc_cons
[fg_console
].d
;
1160 unsigned short keysym
, *key_map
;
1161 unsigned char type
, raw_mode
;
1162 struct tty_struct
*tty
;
1164 struct keyboard_notifier_param param
= { .vc
= vc
, .value
= keycode
, .down
= down
};
1168 if (tty
&& (!tty
->driver_data
)) {
1169 /* No driver data? Strange. Okay we fix it then. */
1170 tty
->driver_data
= vc
;
1173 kbd
= kbd_table
+ vc
->vc_num
;
1175 if (keycode
== KEY_LEFTALT
|| keycode
== KEY_RIGHTALT
)
1176 sysrq_alt
= down
? keycode
: 0;
1178 if (keycode
== KEY_STOP
)
1179 sparc_l1_a_state
= down
;
1184 #ifdef CONFIG_MAC_EMUMOUSEBTN
1185 if (mac_hid_mouse_emulate_buttons(1, keycode
, down
))
1187 #endif /* CONFIG_MAC_EMUMOUSEBTN */
1189 if ((raw_mode
= (kbd
->kbdmode
== VC_RAW
)) && !hw_raw
)
1190 if (emulate_raw(vc
, keycode
, !down
<< 7))
1191 if (keycode
< BTN_MISC
&& printk_ratelimit())
1192 printk(KERN_WARNING
"keyboard.c: can't emulate rawmode for keycode %d\n", keycode
);
1194 #ifdef CONFIG_MAGIC_SYSRQ /* Handle the SysRq Hack */
1195 if (keycode
== KEY_SYSRQ
&& (sysrq_down
|| (down
== 1 && sysrq_alt
))) {
1198 sysrq_alt_use
= sysrq_alt
;
1202 if (sysrq_down
&& !down
&& keycode
== sysrq_alt_use
)
1204 if (sysrq_down
&& down
&& !rep
) {
1205 handle_sysrq(kbd_sysrq_xlate
[keycode
], tty
);
1210 if (keycode
== KEY_A
&& sparc_l1_a_state
) {
1211 sparc_l1_a_state
= 0;
1216 if (kbd
->kbdmode
== VC_MEDIUMRAW
) {
1218 * This is extended medium raw mode, with keys above 127
1219 * encoded as 0, high 7 bits, low 7 bits, with the 0 bearing
1220 * the 'up' flag if needed. 0 is reserved, so this shouldn't
1221 * interfere with anything else. The two bytes after 0 will
1222 * always have the up flag set not to interfere with older
1223 * applications. This allows for 16384 different keycodes,
1224 * which should be enough.
1226 if (keycode
< 128) {
1227 put_queue(vc
, keycode
| (!down
<< 7));
1229 put_queue(vc
, !down
<< 7);
1230 put_queue(vc
, (keycode
>> 7) | 0x80);
1231 put_queue(vc
, keycode
| 0x80);
1237 set_bit(keycode
, key_down
);
1239 clear_bit(keycode
, key_down
);
1242 (!vc_kbd_mode(kbd
, VC_REPEAT
) ||
1243 (tty
&& !L_ECHO(tty
) && tty_chars_in_buffer(tty
)))) {
1245 * Don't repeat a key if the input buffers are not empty and the
1246 * characters get aren't echoed locally. This makes key repeat
1247 * usable with slow applications and under heavy loads.
1252 param
.shift
= shift_final
= (shift_state
| kbd
->slockstate
) ^ kbd
->lockstate
;
1253 param
.ledstate
= kbd
->ledflagstate
;
1254 key_map
= key_maps
[shift_final
];
1256 if (atomic_notifier_call_chain(&keyboard_notifier_list
, KBD_KEYCODE
, ¶m
) == NOTIFY_STOP
|| !key_map
) {
1257 atomic_notifier_call_chain(&keyboard_notifier_list
, KBD_UNBOUND_KEYCODE
, ¶m
);
1258 compute_shiftstate();
1259 kbd
->slockstate
= 0;
1263 if (keycode
>= NR_KEYS
)
1264 if (keycode
>= KEY_BRL_DOT1
&& keycode
<= KEY_BRL_DOT8
)
1265 keysym
= U(K(KT_BRL
, keycode
- KEY_BRL_DOT1
+ 1));
1269 keysym
= key_map
[keycode
];
1271 type
= KTYP(keysym
);
1274 param
.value
= keysym
;
1275 if (atomic_notifier_call_chain(&keyboard_notifier_list
, KBD_UNICODE
, ¶m
) == NOTIFY_STOP
)
1277 if (down
&& !raw_mode
)
1278 to_utf8(vc
, keysym
);
1284 if (type
== KT_LETTER
) {
1286 if (vc_kbd_led(kbd
, VC_CAPSLOCK
)) {
1287 key_map
= key_maps
[shift_final
^ (1 << KG_SHIFT
)];
1289 keysym
= key_map
[keycode
];
1292 param
.value
= keysym
;
1294 if (atomic_notifier_call_chain(&keyboard_notifier_list
, KBD_KEYSYM
, ¶m
) == NOTIFY_STOP
)
1297 if (raw_mode
&& type
!= KT_SPEC
&& type
!= KT_SHIFT
)
1300 (*k_handler
[type
])(vc
, keysym
& 0xff, !down
);
1302 param
.ledstate
= kbd
->ledflagstate
;
1303 atomic_notifier_call_chain(&keyboard_notifier_list
, KBD_POST_KEYSYM
, ¶m
);
1305 if (type
!= KT_SLOCK
)
1306 kbd
->slockstate
= 0;
1309 static void kbd_event(struct input_handle
*handle
, unsigned int event_type
,
1310 unsigned int event_code
, int value
)
1312 /* We are called with interrupts disabled, just take the lock */
1313 spin_lock(&kbd_event_lock
);
1315 if (event_type
== EV_MSC
&& event_code
== MSC_RAW
&& HW_RAW(handle
->dev
))
1317 if (event_type
== EV_KEY
)
1318 kbd_keycode(event_code
, value
, HW_RAW(handle
->dev
));
1320 spin_unlock(&kbd_event_lock
);
1322 tasklet_schedule(&keyboard_tasklet
);
1323 do_poke_blanked_console
= 1;
1324 schedule_console_callback();
1328 * When a keyboard (or other input device) is found, the kbd_connect
1329 * function is called. The function then looks at the device, and if it
1330 * likes it, it can open it and get events from it. In this (kbd_connect)
1331 * function, we should decide which VT to bind that keyboard to initially.
1333 static int kbd_connect(struct input_handler
*handler
, struct input_dev
*dev
,
1334 const struct input_device_id
*id
)
1336 struct input_handle
*handle
;
1340 for (i
= KEY_RESERVED
; i
< BTN_MISC
; i
++)
1341 if (test_bit(i
, dev
->keybit
))
1344 if (i
== BTN_MISC
&& !test_bit(EV_SND
, dev
->evbit
))
1347 handle
= kzalloc(sizeof(struct input_handle
), GFP_KERNEL
);
1352 handle
->handler
= handler
;
1353 handle
->name
= "kbd";
1355 error
= input_register_handle(handle
);
1357 goto err_free_handle
;
1359 error
= input_open_device(handle
);
1361 goto err_unregister_handle
;
1365 err_unregister_handle
:
1366 input_unregister_handle(handle
);
1372 static void kbd_disconnect(struct input_handle
*handle
)
1374 input_close_device(handle
);
1375 input_unregister_handle(handle
);
1380 * Start keyboard handler on the new keyboard by refreshing LED state to
1381 * match the rest of the system.
1383 static void kbd_start(struct input_handle
*handle
)
1385 tasklet_disable(&keyboard_tasklet
);
1387 if (ledstate
!= 0xff)
1388 kbd_update_leds_helper(handle
, &ledstate
);
1390 tasklet_enable(&keyboard_tasklet
);
1393 static const struct input_device_id kbd_ids
[] = {
1395 .flags
= INPUT_DEVICE_ID_MATCH_EVBIT
,
1396 .evbit
= { BIT_MASK(EV_KEY
) },
1400 .flags
= INPUT_DEVICE_ID_MATCH_EVBIT
,
1401 .evbit
= { BIT_MASK(EV_SND
) },
1404 { }, /* Terminating entry */
1407 MODULE_DEVICE_TABLE(input
, kbd_ids
);
1409 static struct input_handler kbd_handler
= {
1411 .connect
= kbd_connect
,
1412 .disconnect
= kbd_disconnect
,
1415 .id_table
= kbd_ids
,
1418 int __init
kbd_init(void)
1423 for (i
= 0; i
< MAX_NR_CONSOLES
; i
++) {
1424 kbd_table
[i
].ledflagstate
= KBD_DEFLEDS
;
1425 kbd_table
[i
].default_ledflagstate
= KBD_DEFLEDS
;
1426 kbd_table
[i
].ledmode
= LED_SHOW_FLAGS
;
1427 kbd_table
[i
].lockstate
= KBD_DEFLOCK
;
1428 kbd_table
[i
].slockstate
= 0;
1429 kbd_table
[i
].modeflags
= KBD_DEFMODE
;
1430 kbd_table
[i
].kbdmode
= default_utf8
? VC_UNICODE
: VC_XLATE
;
1433 error
= input_register_handler(&kbd_handler
);
1437 tasklet_enable(&keyboard_tasklet
);
1438 tasklet_schedule(&keyboard_tasklet
);