Adding upstream version 6.1.76.upstream/6.1.76upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 2291 insertions, 0 deletions

diff --git a/drivers/tty/vt/keyboard.c b/drivers/tty/vt/keyboard.c
new file mode 100644
index 000000000..be8313cdb
--- /dev/null
+++ b/drivers/tty/vt/keyboard.c
@@ -0,0 +1,2291 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Written for linux by Johan Myreen as a translation from
+ * the assembly version by Linus (with diacriticals added)
+ *
+ * Some additional features added by Christoph Niemann (ChN), March 1993
+ *
+ * Loadable keymaps by Risto Kankkunen, May 1993
+ *
+ * Diacriticals redone & other small changes, aeb@cwi.nl, June 1993
+ * Added decr/incr_console, dynamic keymaps, Unicode support,
+ * dynamic function/string keys, led setting,  Sept 1994
+ * `Sticky' modifier keys, 951006.
+ *
+ * 11-11-96: SAK should now work in the raw mode (Martin Mares)
+ *
+ * Modified to provide 'generic' keyboard support by Hamish Macdonald
+ * Merge with the m68k keyboard driver and split-off of the PC low-level
+ * parts by Geert Uytterhoeven, May 1997
+ *
+ * 27-05-97: Added support for the Magic SysRq Key (Martin Mares)
+ * 30-07-98: Dead keys redone, aeb@cwi.nl.
+ * 21-08-02: Converted to input API, major cleanup. (Vojtech Pavlik)
+ */
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#include <linux/consolemap.h>
+#include <linux/init.h>
+#include <linux/input.h>
+#include <linux/jiffies.h>
+#include <linux/kbd_diacr.h>
+#include <linux/kbd_kern.h>
+#include <linux/leds.h>
+#include <linux/mm.h>
+#include <linux/module.h>
+#include <linux/nospec.h>
+#include <linux/notifier.h>
+#include <linux/reboot.h>
+#include <linux/sched/debug.h>
+#include <linux/sched/signal.h>
+#include <linux/slab.h>
+#include <linux/spinlock.h>
+#include <linux/string.h>
+#include <linux/tty_flip.h>
+#include <linux/tty.h>
+#include <linux/uaccess.h>
+#include <linux/vt_kern.h>
+
+#include <asm/irq_regs.h>
+
+/*
+ * Exported functions/variables
+ */
+
+#define KBD_DEFMODE (BIT(VC_REPEAT) | BIT(VC_META))
+
+#if defined(CONFIG_X86) || defined(CONFIG_PARISC)
+#include <asm/kbdleds.h>
+#else
+static inline int kbd_defleds(void)
+{
+	return 0;
+}
+#endif
+
+#define KBD_DEFLOCK 0
+
+/*
+ * Handler Tables.
+ */
+
+#define K_HANDLERS\
+	k_self,		k_fn,		k_spec,		k_pad,\
+	k_dead,		k_cons,		k_cur,		k_shift,\
+	k_meta,		k_ascii,	k_lock,		k_lowercase,\
+	k_slock,	k_dead2,	k_brl,		k_ignore
+
+typedef void (k_handler_fn)(struct vc_data *vc, unsigned char value,
+			    char up_flag);
+static k_handler_fn K_HANDLERS;
+static k_handler_fn *k_handler[16] = { K_HANDLERS };
+
+#define FN_HANDLERS\
+	fn_null,	fn_enter,	fn_show_ptregs,	fn_show_mem,\
+	fn_show_state,	fn_send_intr,	fn_lastcons,	fn_caps_toggle,\
+	fn_num,		fn_hold,	fn_scroll_forw,	fn_scroll_back,\
+	fn_boot_it,	fn_caps_on,	fn_compose,	fn_SAK,\
+	fn_dec_console, fn_inc_console, fn_spawn_con,	fn_bare_num
+
+typedef void (fn_handler_fn)(struct vc_data *vc);
+static fn_handler_fn FN_HANDLERS;
+static fn_handler_fn *fn_handler[] = { FN_HANDLERS };
+
+/*
+ * Variables exported for vt_ioctl.c
+ */
+
+struct vt_spawn_console vt_spawn_con = {
+	.lock = __SPIN_LOCK_UNLOCKED(vt_spawn_con.lock),
+	.pid  = NULL,
+	.sig  = 0,
+};
+
+
+/*
+ * Internal Data.
+ */
+
+static struct kbd_struct kbd_table[MAX_NR_CONSOLES];
+static struct kbd_struct *kbd = kbd_table;
+
+/* maximum values each key_handler can handle */
+static const unsigned char max_vals[] = {
+	[ KT_LATIN	] = 255,
+	[ KT_FN		] = ARRAY_SIZE(func_table) - 1,
+	[ KT_SPEC	] = ARRAY_SIZE(fn_handler) - 1,
+	[ KT_PAD	] = NR_PAD - 1,
+	[ KT_DEAD	] = NR_DEAD - 1,
+	[ KT_CONS	] = 255,
+	[ KT_CUR	] = 3,
+	[ KT_SHIFT	] = NR_SHIFT - 1,
+	[ KT_META	] = 255,
+	[ KT_ASCII	] = NR_ASCII - 1,
+	[ KT_LOCK	] = NR_LOCK - 1,
+	[ KT_LETTER	] = 255,
+	[ KT_SLOCK	] = NR_LOCK - 1,
+	[ KT_DEAD2	] = 255,
+	[ KT_BRL	] = NR_BRL - 1,
+};
+
+static const int NR_TYPES = ARRAY_SIZE(max_vals);
+
+static void kbd_bh(struct tasklet_struct *unused);
+static DECLARE_TASKLET_DISABLED(keyboard_tasklet, kbd_bh);
+
+static struct input_handler kbd_handler;
+static DEFINE_SPINLOCK(kbd_event_lock);
+static DEFINE_SPINLOCK(led_lock);
+static DEFINE_SPINLOCK(func_buf_lock); /* guard 'func_buf'  and friends */
+static DECLARE_BITMAP(key_down, KEY_CNT);	/* keyboard key bitmap */
+static unsigned char shift_down[NR_SHIFT];		/* shift state counters.. */
+static bool dead_key_next;
+
+/* Handles a number being assembled on the number pad */
+static bool npadch_active;
+static unsigned int npadch_value;
+
+static unsigned int diacr;
+static bool rep;			/* flag telling character repeat */
+
+static int shift_state = 0;
+
+static unsigned int ledstate = -1U;			/* undefined */
+static unsigned char ledioctl;
+static bool vt_switch;
+
+/*
+ * Notifier list for console keyboard events
+ */
+static ATOMIC_NOTIFIER_HEAD(keyboard_notifier_list);
+
+int register_keyboard_notifier(struct notifier_block *nb)
+{
+	return atomic_notifier_chain_register(&keyboard_notifier_list, nb);
+}
+EXPORT_SYMBOL_GPL(register_keyboard_notifier);
+
+int unregister_keyboard_notifier(struct notifier_block *nb)
+{
+	return atomic_notifier_chain_unregister(&keyboard_notifier_list, nb);
+}
+EXPORT_SYMBOL_GPL(unregister_keyboard_notifier);
+
+/*
+ * Translation of scancodes to keycodes. We set them on only the first
+ * keyboard in the list that accepts the scancode and keycode.
+ * Explanation for not choosing the first attached keyboard anymore:
+ *  USB keyboards for example have two event devices: one for all "normal"
+ *  keys and one for extra function keys (like "volume up", "make coffee",
+ *  etc.). So this means that scancodes for the extra function keys won't
+ *  be valid for the first event device, but will be for the second.
+ */
+
+struct getset_keycode_data {
+	struct input_keymap_entry ke;
+	int error;
+};
+
+static int getkeycode_helper(struct input_handle *handle, void *data)
+{
+	struct getset_keycode_data *d = data;
+
+	d->error = input_get_keycode(handle->dev, &d->ke);
+
+	return d->error == 0; /* stop as soon as we successfully get one */
+}
+
+static int getkeycode(unsigned int scancode)
+{
+	struct getset_keycode_data d = {
+		.ke	= {
+			.flags		= 0,
+			.len		= sizeof(scancode),
+			.keycode	= 0,
+		},
+		.error	= -ENODEV,
+	};
+
+	memcpy(d.ke.scancode, &scancode, sizeof(scancode));
+
+	input_handler_for_each_handle(&kbd_handler, &d, getkeycode_helper);
+
+	return d.error ?: d.ke.keycode;
+}
+
+static int setkeycode_helper(struct input_handle *handle, void *data)
+{
+	struct getset_keycode_data *d = data;
+
+	d->error = input_set_keycode(handle->dev, &d->ke);
+
+	return d->error == 0; /* stop as soon as we successfully set one */
+}
+
+static int setkeycode(unsigned int scancode, unsigned int keycode)
+{
+	struct getset_keycode_data d = {
+		.ke	= {
+			.flags		= 0,
+			.len		= sizeof(scancode),
+			.keycode	= keycode,
+		},
+		.error	= -ENODEV,
+	};
+
+	memcpy(d.ke.scancode, &scancode, sizeof(scancode));
+
+	input_handler_for_each_handle(&kbd_handler, &d, setkeycode_helper);
+
+	return d.error;
+}
+
+/*
+ * Making beeps and bells. Note that we prefer beeps to bells, but when
+ * shutting the sound off we do both.
+ */
+
+static int kd_sound_helper(struct input_handle *handle, void *data)
+{
+	unsigned int *hz = data;
+	struct input_dev *dev = handle->dev;
+
+	if (test_bit(EV_SND, dev->evbit)) {
+		if (test_bit(SND_TONE, dev->sndbit)) {
+			input_inject_event(handle, EV_SND, SND_TONE, *hz);
+			if (*hz)
+				return 0;
+		}
+		if (test_bit(SND_BELL, dev->sndbit))
+			input_inject_event(handle, EV_SND, SND_BELL, *hz ? 1 : 0);
+	}
+
+	return 0;
+}
+
+static void kd_nosound(struct timer_list *unused)
+{
+	static unsigned int zero;
+
+	input_handler_for_each_handle(&kbd_handler, &zero, kd_sound_helper);
+}
+
+static DEFINE_TIMER(kd_mksound_timer, kd_nosound);
+
+void kd_mksound(unsigned int hz, unsigned int ticks)
+{
+	del_timer_sync(&kd_mksound_timer);
+
+	input_handler_for_each_handle(&kbd_handler, &hz, kd_sound_helper);
+
+	if (hz && ticks)
+		mod_timer(&kd_mksound_timer, jiffies + ticks);
+}
+EXPORT_SYMBOL(kd_mksound);
+
+/*
+ * Setting the keyboard rate.
+ */
+
+static int kbd_rate_helper(struct input_handle *handle, void *data)
+{
+	struct input_dev *dev = handle->dev;
+	struct kbd_repeat *rpt = data;
+
+	if (test_bit(EV_REP, dev->evbit)) {
+
+		if (rpt[0].delay > 0)
+			input_inject_event(handle,
+					   EV_REP, REP_DELAY, rpt[0].delay);
+		if (rpt[0].period > 0)
+			input_inject_event(handle,
+					   EV_REP, REP_PERIOD, rpt[0].period);
+
+		rpt[1].delay = dev->rep[REP_DELAY];
+		rpt[1].period = dev->rep[REP_PERIOD];
+	}
+
+	return 0;
+}
+
+int kbd_rate(struct kbd_repeat *rpt)
+{
+	struct kbd_repeat data[2] = { *rpt };
+
+	input_handler_for_each_handle(&kbd_handler, data, kbd_rate_helper);
+	*rpt = data[1];	/* Copy currently used settings */
+
+	return 0;
+}
+
+/*
+ * Helper Functions.
+ */
+static void put_queue(struct vc_data *vc, int ch)
+{
+	tty_insert_flip_char(&vc->port, ch, 0);
+	tty_flip_buffer_push(&vc->port);
+}
+
+static void puts_queue(struct vc_data *vc, const char *cp)
+{
+	tty_insert_flip_string(&vc->port, cp, strlen(cp));
+	tty_flip_buffer_push(&vc->port);
+}
+
+static void applkey(struct vc_data *vc, int key, char mode)
+{
+	static char buf[] = { 0x1b, 'O', 0x00, 0x00 };
+
+	buf[1] = (mode ? 'O' : '[');
+	buf[2] = key;
+	puts_queue(vc, buf);
+}
+
+/*
+ * Many other routines do put_queue, but I think either
+ * they produce ASCII, or they produce some user-assigned
+ * string, and in both cases we might assume that it is
+ * in utf-8 already.
+ */
+static void to_utf8(struct vc_data *vc, uint c)
+{
+	if (c < 0x80)
+		/*  0******* */
+		put_queue(vc, c);
+	else if (c < 0x800) {
+		/* 110***** 10****** */
+		put_queue(vc, 0xc0 | (c >> 6));
+		put_queue(vc, 0x80 | (c & 0x3f));
+	} else if (c < 0x10000) {
+		if (c >= 0xD800 && c < 0xE000)
+			return;
+		if (c == 0xFFFF)
+			return;
+		/* 1110**** 10****** 10****** */
+		put_queue(vc, 0xe0 | (c >> 12));
+		put_queue(vc, 0x80 | ((c >> 6) & 0x3f));
+		put_queue(vc, 0x80 | (c & 0x3f));
+	} else if (c < 0x110000) {
+		/* 11110*** 10****** 10****** 10****** */
+		put_queue(vc, 0xf0 | (c >> 18));
+		put_queue(vc, 0x80 | ((c >> 12) & 0x3f));
+		put_queue(vc, 0x80 | ((c >> 6) & 0x3f));
+		put_queue(vc, 0x80 | (c & 0x3f));
+	}
+}
+
+/* FIXME: review locking for vt.c callers */
+static void set_leds(void)
+{
+	tasklet_schedule(&keyboard_tasklet);
+}
+
+/*
+ * Called after returning from RAW mode or when changing consoles - recompute
+ * shift_down[] and shift_state from key_down[] maybe called when keymap is
+ * undefined, so that shiftkey release is seen. The caller must hold the
+ * kbd_event_lock.
+ */
+
+static void do_compute_shiftstate(void)
+{
+	unsigned int k, sym, val;
+
+	shift_state = 0;
+	memset(shift_down, 0, sizeof(shift_down));
+
+	for_each_set_bit(k, key_down, min(NR_KEYS, KEY_CNT)) {
+		sym = U(key_maps[0][k]);
+		if (KTYP(sym) != KT_SHIFT && KTYP(sym) != KT_SLOCK)
+			continue;
+
+		val = KVAL(sym);
+		if (val == KVAL(K_CAPSSHIFT))
+			val = KVAL(K_SHIFT);
+
+		shift_down[val]++;
+		shift_state |= BIT(val);
+	}
+}
+
+/* We still have to export this method to vt.c */
+void vt_set_leds_compute_shiftstate(void)
+{
+	unsigned long flags;
+
+	/*
+	 * When VT is switched, the keyboard led needs to be set once.
+	 * Ensure that after the switch is completed, the state of the
+	 * keyboard LED is consistent with the state of the keyboard lock.
+	 */
+	vt_switch = true;
+	set_leds();
+
+	spin_lock_irqsave(&kbd_event_lock, flags);
+	do_compute_shiftstate();
+	spin_unlock_irqrestore(&kbd_event_lock, flags);
+}
+
+/*
+ * We have a combining character DIACR here, followed by the character CH.
+ * If the combination occurs in the table, return the corresponding value.
+ * Otherwise, if CH is a space or equals DIACR, return DIACR.
+ * Otherwise, conclude that DIACR was not combining after all,
+ * queue it and return CH.
+ */
+static unsigned int handle_diacr(struct vc_data *vc, unsigned int ch)
+{
+	unsigned int d = diacr;
+	unsigned int i;
+
+	diacr = 0;
+
+	if ((d & ~0xff) == BRL_UC_ROW) {
+		if ((ch & ~0xff) == BRL_UC_ROW)
+			return d | ch;
+	} else {
+		for (i = 0; i < accent_table_size; i++)
+			if (accent_table[i].diacr == d && accent_table[i].base == ch)
+				return accent_table[i].result;
+	}
+
+	if (ch == ' ' || ch == (BRL_UC_ROW|0) || ch == d)
+		return d;
+
+	if (kbd->kbdmode == VC_UNICODE)
+		to_utf8(vc, d);
+	else {
+		int c = conv_uni_to_8bit(d);
+		if (c != -1)
+			put_queue(vc, c);
+	}
+
+	return ch;
+}
+
+/*
+ * Special function handlers
+ */
+static void fn_enter(struct vc_data *vc)
+{
+	if (diacr) {
+		if (kbd->kbdmode == VC_UNICODE)
+			to_utf8(vc, diacr);
+		else {
+			int c = conv_uni_to_8bit(diacr);
+			if (c != -1)
+				put_queue(vc, c);
+		}
+		diacr = 0;
+	}
+
+	put_queue(vc, '\r');
+	if (vc_kbd_mode(kbd, VC_CRLF))
+		put_queue(vc, '\n');
+}
+
+static void fn_caps_toggle(struct vc_data *vc)
+{
+	if (rep)
+		return;
+
+	chg_vc_kbd_led(kbd, VC_CAPSLOCK);
+}
+
+static void fn_caps_on(struct vc_data *vc)
+{
+	if (rep)
+		return;
+
+	set_vc_kbd_led(kbd, VC_CAPSLOCK);
+}
+
+static void fn_show_ptregs(struct vc_data *vc)
+{
+	struct pt_regs *regs = get_irq_regs();
+
+	if (regs)
+		show_regs(regs);
+}
+
+static void fn_hold(struct vc_data *vc)
+{
+	struct tty_struct *tty = vc->port.tty;
+
+	if (rep || !tty)
+		return;
+
+	/*
+	 * Note: SCROLLOCK will be set (cleared) by stop_tty (start_tty);
+	 * these routines are also activated by ^S/^Q.
+	 * (And SCROLLOCK can also be set by the ioctl KDSKBLED.)
+	 */
+	if (tty->flow.stopped)
+		start_tty(tty);
+	else
+		stop_tty(tty);
+}
+
+static void fn_num(struct vc_data *vc)
+{
+	if (vc_kbd_mode(kbd, VC_APPLIC))
+		applkey(vc, 'P', 1);
+	else
+		fn_bare_num(vc);
+}
+
+/*
+ * Bind this to Shift-NumLock if you work in application keypad mode
+ * but want to be able to change the NumLock flag.
+ * Bind this to NumLock if you prefer that the NumLock key always
+ * changes the NumLock flag.
+ */
+static void fn_bare_num(struct vc_data *vc)
+{
+	if (!rep)
+		chg_vc_kbd_led(kbd, VC_NUMLOCK);
+}
+
+static void fn_lastcons(struct vc_data *vc)
+{
+	/* switch to the last used console, ChN */
+	set_console(last_console);
+}
+
+static void fn_dec_console(struct vc_data *vc)
+{
+	int i, cur = fg_console;
+
+	/* Currently switching?  Queue this next switch relative to that. */
+	if (want_console != -1)
+		cur = want_console;
+
+	for (i = cur - 1; i != cur; i--) {
+		if (i == -1)
+			i = MAX_NR_CONSOLES - 1;
+		if (vc_cons_allocated(i))
+			break;
+	}
+	set_console(i);
+}
+
+static void fn_inc_console(struct vc_data *vc)
+{
+	int i, cur = fg_console;
+
+	/* Currently switching?  Queue this next switch relative to that. */
+	if (want_console != -1)
+		cur = want_console;
+
+	for (i = cur+1; i != cur; i++) {
+		if (i == MAX_NR_CONSOLES)
+			i = 0;
+		if (vc_cons_allocated(i))
+			break;
+	}
+	set_console(i);
+}
+
+static void fn_send_intr(struct vc_data *vc)
+{
+	tty_insert_flip_char(&vc->port, 0, TTY_BREAK);
+	tty_flip_buffer_push(&vc->port);
+}
+
+static void fn_scroll_forw(struct vc_data *vc)
+{
+	scrollfront(vc, 0);
+}
+
+static void fn_scroll_back(struct vc_data *vc)
+{
+	scrollback(vc);
+}
+
+static void fn_show_mem(struct vc_data *vc)
+{
+	show_mem(0, NULL);
+}
+
+static void fn_show_state(struct vc_data *vc)
+{
+	show_state();
+}
+
+static void fn_boot_it(struct vc_data *vc)
+{
+	ctrl_alt_del();
+}
+
+static void fn_compose(struct vc_data *vc)
+{
+	dead_key_next = true;
+}
+
+static void fn_spawn_con(struct vc_data *vc)
+{
+	spin_lock(&vt_spawn_con.lock);
+	if (vt_spawn_con.pid)
+		if (kill_pid(vt_spawn_con.pid, vt_spawn_con.sig, 1)) {
+			put_pid(vt_spawn_con.pid);
+			vt_spawn_con.pid = NULL;
+		}
+	spin_unlock(&vt_spawn_con.lock);
+}
+
+static void fn_SAK(struct vc_data *vc)
+{
+	struct work_struct *SAK_work = &vc_cons[fg_console].SAK_work;
+	schedule_work(SAK_work);
+}
+
+static void fn_null(struct vc_data *vc)
+{
+	do_compute_shiftstate();
+}
+
+/*
+ * Special key handlers
+ */
+static void k_ignore(struct vc_data *vc, unsigned char value, char up_flag)
+{
+}
+
+static void k_spec(struct vc_data *vc, unsigned char value, char up_flag)
+{
+	if (up_flag)
+		return;
+	if (value >= ARRAY_SIZE(fn_handler))
+		return;
+	if ((kbd->kbdmode == VC_RAW ||
+	     kbd->kbdmode == VC_MEDIUMRAW ||
+	     kbd->kbdmode == VC_OFF) &&
+	     value != KVAL(K_SAK))
+		return;		/* SAK is allowed even in raw mode */
+	fn_handler[value](vc);
+}
+
+static void k_lowercase(struct vc_data *vc, unsigned char value, char up_flag)
+{
+	pr_err("k_lowercase was called - impossible\n");
+}
+
+static void k_unicode(struct vc_data *vc, unsigned int value, char up_flag)
+{
+	if (up_flag)
+		return;		/* no action, if this is a key release */
+
+	if (diacr)
+		value = handle_diacr(vc, value);
+
+	if (dead_key_next) {
+		dead_key_next = false;
+		diacr = value;
+		return;
+	}
+	if (kbd->kbdmode == VC_UNICODE)
+		to_utf8(vc, value);
+	else {
+		int c = conv_uni_to_8bit(value);
+		if (c != -1)
+			put_queue(vc, c);
+	}
+}
+
+/*
+ * Handle dead key. Note that we now may have several
+ * dead keys modifying the same character. Very useful
+ * for Vietnamese.
+ */
+static void k_deadunicode(struct vc_data *vc, unsigned int value, char up_flag)
+{
+	if (up_flag)
+		return;
+
+	diacr = (diacr ? handle_diacr(vc, value) : value);
+}
+
+static void k_self(struct vc_data *vc, unsigned char value, char up_flag)
+{
+	k_unicode(vc, conv_8bit_to_uni(value), up_flag);
+}
+
+static void k_dead2(struct vc_data *vc, unsigned char value, char up_flag)
+{
+	k_deadunicode(vc, value, up_flag);
+}
+
+/*
+ * Obsolete - for backwards compatibility only
+ */
+static void k_dead(struct vc_data *vc, unsigned char value, char up_flag)
+{
+	static const unsigned char ret_diacr[NR_DEAD] = {
+		'`',	/* dead_grave */
+		'\'',	/* dead_acute */
+		'^',	/* dead_circumflex */
+		'~',	/* dead_tilda */
+		'"',	/* dead_diaeresis */
+		',',	/* dead_cedilla */
+		'_',	/* dead_macron */
+		'U',	/* dead_breve */
+		'.',	/* dead_abovedot */
+		'*',	/* dead_abovering */
+		'=',	/* dead_doubleacute */
+		'c',	/* dead_caron */
+		'k',	/* dead_ogonek */
+		'i',	/* dead_iota */
+		'#',	/* dead_voiced_sound */
+		'o',	/* dead_semivoiced_sound */
+		'!',	/* dead_belowdot */
+		'?',	/* dead_hook */
+		'+',	/* dead_horn */
+		'-',	/* dead_stroke */
+		')',	/* dead_abovecomma */
+		'(',	/* dead_abovereversedcomma */
+		':',	/* dead_doublegrave */
+		'n',	/* dead_invertedbreve */
+		';',	/* dead_belowcomma */
+		'$',	/* dead_currency */
+		'@',	/* dead_greek */
+	};
+
+	k_deadunicode(vc, ret_diacr[value], up_flag);
+}
+
+static void k_cons(struct vc_data *vc, unsigned char value, char up_flag)
+{
+	if (up_flag)
+		return;
+
+	set_console(value);
+}
+
+static void k_fn(struct vc_data *vc, unsigned char value, char up_flag)
+{
+	if (up_flag)
+		return;
+
+	if ((unsigned)value < ARRAY_SIZE(func_table)) {
+		unsigned long flags;
+
+		spin_lock_irqsave(&func_buf_lock, flags);
+		if (func_table[value])
+			puts_queue(vc, func_table[value]);
+		spin_unlock_irqrestore(&func_buf_lock, flags);
+
+	} else
+		pr_err("k_fn called with value=%d\n", value);
+}
+
+static void k_cur(struct vc_data *vc, unsigned char value, char up_flag)
+{
+	static const char cur_chars[] = "BDCA";
+
+	if (up_flag)
+		return;
+
+	applkey(vc, cur_chars[value], vc_kbd_mode(kbd, VC_CKMODE));
+}
+
+static void k_pad(struct vc_data *vc, unsigned char value, char up_flag)
+{
+	static const char pad_chars[] = "0123456789+-*/\015,.?()#";
+	static const char app_map[] = "pqrstuvwxylSRQMnnmPQS";
+
+	if (up_flag)
+		return;		/* no action, if this is a key release */
+
+	/* kludge... shift forces cursor/number keys */
+	if (vc_kbd_mode(kbd, VC_APPLIC) && !shift_down[KG_SHIFT]) {
+		applkey(vc, app_map[value], 1);
+		return;
+	}
+
+	if (!vc_kbd_led(kbd, VC_NUMLOCK)) {
+
+		switch (value) {
+		case KVAL(K_PCOMMA):
+		case KVAL(K_PDOT):
+			k_fn(vc, KVAL(K_REMOVE), 0);
+			return;
+		case KVAL(K_P0):
+			k_fn(vc, KVAL(K_INSERT), 0);
+			return;
+		case KVAL(K_P1):
+			k_fn(vc, KVAL(K_SELECT), 0);
+			return;
+		case KVAL(K_P2):
+			k_cur(vc, KVAL(K_DOWN), 0);
+			return;
+		case KVAL(K_P3):
+			k_fn(vc, KVAL(K_PGDN), 0);
+			return;
+		case KVAL(K_P4):
+			k_cur(vc, KVAL(K_LEFT), 0);
+			return;
+		case KVAL(K_P6):
+			k_cur(vc, KVAL(K_RIGHT), 0);
+			return;
+		case KVAL(K_P7):
+			k_fn(vc, KVAL(K_FIND), 0);
+			return;
+		case KVAL(K_P8):
+			k_cur(vc, KVAL(K_UP), 0);
+			return;
+		case KVAL(K_P9):
+			k_fn(vc, KVAL(K_PGUP), 0);
+			return;
+		case KVAL(K_P5):
+			applkey(vc, 'G', vc_kbd_mode(kbd, VC_APPLIC));
+			return;
+		}
+	}
+
+	put_queue(vc, pad_chars[value]);
+	if (value == KVAL(K_PENTER) && vc_kbd_mode(kbd, VC_CRLF))
+		put_queue(vc, '\n');
+}
+
+static void k_shift(struct vc_data *vc, unsigned char value, char up_flag)
+{
+	int old_state = shift_state;
+
+	if (rep)
+		return;
+	/*
+	 * Mimic typewriter:
+	 * a CapsShift key acts like Shift but undoes CapsLock
+	 */
+	if (value == KVAL(K_CAPSSHIFT)) {
+		value = KVAL(K_SHIFT);
+		if (!up_flag)
+			clr_vc_kbd_led(kbd, VC_CAPSLOCK);
+	}
+
+	if (up_flag) {
+		/*
+		 * handle the case that two shift or control
+		 * keys are depressed simultaneously
+		 */
+		if (shift_down[value])
+			shift_down[value]--;
+	} else
+		shift_down[value]++;
+
+	if (shift_down[value])
+		shift_state |= BIT(value);
+	else
+		shift_state &= ~BIT(value);
+
+	/* kludge */
+	if (up_flag && shift_state != old_state && npadch_active) {
+		if (kbd->kbdmode == VC_UNICODE)
+			to_utf8(vc, npadch_value);
+		else
+			put_queue(vc, npadch_value & 0xff);
+		npadch_active = false;
+	}
+}
+
+static void k_meta(struct vc_data *vc, unsigned char value, char up_flag)
+{
+	if (up_flag)
+		return;
+
+	if (vc_kbd_mode(kbd, VC_META)) {
+		put_queue(vc, '\033');
+		put_queue(vc, value);
+	} else
+		put_queue(vc, value | BIT(7));
+}
+
+static void k_ascii(struct vc_data *vc, unsigned char value, char up_flag)
+{
+	unsigned int base;
+
+	if (up_flag)
+		return;
+
+	if (value < 10) {
+		/* decimal input of code, while Alt depressed */
+		base = 10;
+	} else {
+		/* hexadecimal input of code, while AltGr depressed */
+		value -= 10;
+		base = 16;
+	}
+
+	if (!npadch_active) {
+		npadch_value = 0;
+		npadch_active = true;
+	}
+
+	npadch_value = npadch_value * base + value;
+}
+
+static void k_lock(struct vc_data *vc, unsigned char value, char up_flag)
+{
+	if (up_flag || rep)
+		return;
+
+	chg_vc_kbd_lock(kbd, value);
+}
+
+static void k_slock(struct vc_data *vc, unsigned char value, char up_flag)
+{
+	k_shift(vc, value, up_flag);
+	if (up_flag || rep)
+		return;
+
+	chg_vc_kbd_slock(kbd, value);
+	/* try to make Alt, oops, AltGr and such work */
+	if (!key_maps[kbd->lockstate ^ kbd->slockstate]) {
+		kbd->slockstate = 0;
+		chg_vc_kbd_slock(kbd, value);
+	}
+}
+
+/* by default, 300ms interval for combination release */
+static unsigned brl_timeout = 300;
+MODULE_PARM_DESC(brl_timeout, "Braille keys release delay in ms (0 for commit on first key release)");
+module_param(brl_timeout, uint, 0644);
+
+static unsigned brl_nbchords = 1;
+MODULE_PARM_DESC(brl_nbchords, "Number of chords that produce a braille pattern (0 for dead chords)");
+module_param(brl_nbchords, uint, 0644);
+
+static void k_brlcommit(struct vc_data *vc, unsigned int pattern, char up_flag)
+{
+	static unsigned long chords;
+	static unsigned committed;
+
+	if (!brl_nbchords)
+		k_deadunicode(vc, BRL_UC_ROW | pattern, up_flag);
+	else {
+		committed |= pattern;
+		chords++;
+		if (chords == brl_nbchords) {
+			k_unicode(vc, BRL_UC_ROW | committed, up_flag);
+			chords = 0;
+			committed = 0;
+		}
+	}
+}
+
+static void k_brl(struct vc_data *vc, unsigned char value, char up_flag)
+{
+	static unsigned pressed, committing;
+	static unsigned long releasestart;
+
+	if (kbd->kbdmode != VC_UNICODE) {
+		if (!up_flag)
+			pr_warn("keyboard mode must be unicode for braille patterns\n");
+		return;
+	}
+
+	if (!value) {
+		k_unicode(vc, BRL_UC_ROW, up_flag);
+		return;
+	}
+
+	if (value > 8)
+		return;
+
+	if (!up_flag) {
+		pressed |= BIT(value - 1);
+		if (!brl_timeout)
+			committing = pressed;
+	} else if (brl_timeout) {
+		if (!committing ||
+		    time_after(jiffies,
+			       releasestart + msecs_to_jiffies(brl_timeout))) {
+			committing = pressed;
+			releasestart = jiffies;
+		}
+		pressed &= ~BIT(value - 1);
+		if (!pressed && committing) {
+			k_brlcommit(vc, committing, 0);
+			committing = 0;
+		}
+	} else {
+		if (committing) {
+			k_brlcommit(vc, committing, 0);
+			committing = 0;
+		}
+		pressed &= ~BIT(value - 1);
+	}
+}
+
+#if IS_ENABLED(CONFIG_INPUT_LEDS) && IS_ENABLED(CONFIG_LEDS_TRIGGERS)
+
+struct kbd_led_trigger {
+	struct led_trigger trigger;
+	unsigned int mask;
+};
+
+static int kbd_led_trigger_activate(struct led_classdev *cdev)
+{
+	struct kbd_led_trigger *trigger =
+		container_of(cdev->trigger, struct kbd_led_trigger, trigger);
+
+	tasklet_disable(&keyboard_tasklet);
+	if (ledstate != -1U)
+		led_trigger_event(&trigger->trigger,
+				  ledstate & trigger->mask ?
+					LED_FULL : LED_OFF);
+	tasklet_enable(&keyboard_tasklet);
+
+	return 0;
+}
+
+#define KBD_LED_TRIGGER(_led_bit, _name) {			\
+		.trigger = {					\
+			.name = _name,				\
+			.activate = kbd_led_trigger_activate,	\
+		},						\
+		.mask	= BIT(_led_bit),			\
+	}
+
+#define KBD_LOCKSTATE_TRIGGER(_led_bit, _name)		\
+	KBD_LED_TRIGGER((_led_bit) + 8, _name)
+
+static struct kbd_led_trigger kbd_led_triggers[] = {
+	KBD_LED_TRIGGER(VC_SCROLLOCK, "kbd-scrolllock"),
+	KBD_LED_TRIGGER(VC_NUMLOCK,   "kbd-numlock"),
+	KBD_LED_TRIGGER(VC_CAPSLOCK,  "kbd-capslock"),
+	KBD_LED_TRIGGER(VC_KANALOCK,  "kbd-kanalock"),
+
+	KBD_LOCKSTATE_TRIGGER(VC_SHIFTLOCK,  "kbd-shiftlock"),
+	KBD_LOCKSTATE_TRIGGER(VC_ALTGRLOCK,  "kbd-altgrlock"),
+	KBD_LOCKSTATE_TRIGGER(VC_CTRLLOCK,   "kbd-ctrllock"),
+	KBD_LOCKSTATE_TRIGGER(VC_ALTLOCK,    "kbd-altlock"),
+	KBD_LOCKSTATE_TRIGGER(VC_SHIFTLLOCK, "kbd-shiftllock"),
+	KBD_LOCKSTATE_TRIGGER(VC_SHIFTRLOCK, "kbd-shiftrlock"),
+	KBD_LOCKSTATE_TRIGGER(VC_CTRLLLOCK,  "kbd-ctrlllock"),
+	KBD_LOCKSTATE_TRIGGER(VC_CTRLRLOCK,  "kbd-ctrlrlock"),
+};
+
+static void kbd_propagate_led_state(unsigned int old_state,
+				    unsigned int new_state)
+{
+	struct kbd_led_trigger *trigger;
+	unsigned int changed = old_state ^ new_state;
+	int i;
+
+	for (i = 0; i < ARRAY_SIZE(kbd_led_triggers); i++) {
+		trigger = &kbd_led_triggers[i];
+
+		if (changed & trigger->mask)
+			led_trigger_event(&trigger->trigger,
+					  new_state & trigger->mask ?
+						LED_FULL : LED_OFF);
+	}
+}
+
+static int kbd_update_leds_helper(struct input_handle *handle, void *data)
+{
+	unsigned int led_state = *(unsigned int *)data;
+
+	if (test_bit(EV_LED, handle->dev->evbit))
+		kbd_propagate_led_state(~led_state, led_state);
+
+	return 0;
+}
+
+static void kbd_init_leds(void)
+{
+	int error;
+	int i;
+
+	for (i = 0; i < ARRAY_SIZE(kbd_led_triggers); i++) {
+		error = led_trigger_register(&kbd_led_triggers[i].trigger);
+		if (error)
+			pr_err("error %d while registering trigger %s\n",
+			       error, kbd_led_triggers[i].trigger.name);
+	}
+}
+
+#else
+
+static int kbd_update_leds_helper(struct input_handle *handle, void *data)
+{
+	unsigned int leds = *(unsigned int *)data;
+
+	if (test_bit(EV_LED, handle->dev->evbit)) {
+		input_inject_event(handle, EV_LED, LED_SCROLLL, !!(leds & BIT(0)));
+		input_inject_event(handle, EV_LED, LED_NUML,    !!(leds & BIT(1)));
+		input_inject_event(handle, EV_LED, LED_CAPSL,   !!(leds & BIT(2)));
+		input_inject_event(handle, EV_SYN, SYN_REPORT, 0);
+	}
+
+	return 0;
+}
+
+static void kbd_propagate_led_state(unsigned int old_state,
+				    unsigned int new_state)
+{
+	input_handler_for_each_handle(&kbd_handler, &new_state,
+				      kbd_update_leds_helper);
+}
+
+static void kbd_init_leds(void)
+{
+}
+
+#endif
+
+/*
+ * The leds display either (i) the status of NumLock, CapsLock, ScrollLock,
+ * or (ii) whatever pattern of lights people want to show using KDSETLED,
+ * or (iii) specified bits of specified words in kernel memory.
+ */
+static unsigned char getledstate(void)
+{
+	return ledstate & 0xff;
+}
+
+void setledstate(struct kbd_struct *kb, unsigned int led)
+{
+        unsigned long flags;
+        spin_lock_irqsave(&led_lock, flags);
+	if (!(led & ~7)) {
+		ledioctl = led;
+		kb->ledmode = LED_SHOW_IOCTL;
+	} else
+		kb->ledmode = LED_SHOW_FLAGS;
+
+	set_leds();
+	spin_unlock_irqrestore(&led_lock, flags);
+}
+
+static inline unsigned char getleds(void)
+{
+	struct kbd_struct *kb = kbd_table + fg_console;
+
+	if (kb->ledmode == LED_SHOW_IOCTL)
+		return ledioctl;
+
+	return kb->ledflagstate;
+}
+
+/**
+ *	vt_get_leds	-	helper for braille console
+ *	@console: console to read
+ *	@flag: flag we want to check
+ *
+ *	Check the status of a keyboard led flag and report it back
+ */
+int vt_get_leds(unsigned int console, int flag)
+{
+	struct kbd_struct *kb = &kbd_table[console];
+	int ret;
+	unsigned long flags;
+
+	spin_lock_irqsave(&led_lock, flags);
+	ret = vc_kbd_led(kb, flag);
+	spin_unlock_irqrestore(&led_lock, flags);
+
+	return ret;
+}
+EXPORT_SYMBOL_GPL(vt_get_leds);
+
+/**
+ *	vt_set_led_state	-	set LED state of a console
+ *	@console: console to set
+ *	@leds: LED bits
+ *
+ *	Set the LEDs on a console. This is a wrapper for the VT layer
+ *	so that we can keep kbd knowledge internal
+ */
+void vt_set_led_state(unsigned int console, int leds)
+{
+	struct kbd_struct *kb = &kbd_table[console];
+	setledstate(kb, leds);
+}
+
+/**
+ *	vt_kbd_con_start	-	Keyboard side of console start
+ *	@console: console
+ *
+ *	Handle console start. This is a wrapper for the VT layer
+ *	so that we can keep kbd knowledge internal
+ *
+ *	FIXME: We eventually need to hold the kbd lock here to protect
+ *	the LED updating. We can't do it yet because fn_hold calls stop_tty
+ *	and start_tty under the kbd_event_lock, while normal tty paths
+ *	don't hold the lock. We probably need to split out an LED lock
+ *	but not during an -rc release!
+ */
+void vt_kbd_con_start(unsigned int console)
+{
+	struct kbd_struct *kb = &kbd_table[console];
+	unsigned long flags;
+	spin_lock_irqsave(&led_lock, flags);
+	clr_vc_kbd_led(kb, VC_SCROLLOCK);
+	set_leds();
+	spin_unlock_irqrestore(&led_lock, flags);
+}
+
+/**
+ *	vt_kbd_con_stop		-	Keyboard side of console stop
+ *	@console: console
+ *
+ *	Handle console stop. This is a wrapper for the VT layer
+ *	so that we can keep kbd knowledge internal
+ */
+void vt_kbd_con_stop(unsigned int console)
+{
+	struct kbd_struct *kb = &kbd_table[console];
+	unsigned long flags;
+	spin_lock_irqsave(&led_lock, flags);
+	set_vc_kbd_led(kb, VC_SCROLLOCK);
+	set_leds();
+	spin_unlock_irqrestore(&led_lock, flags);
+}
+
+/*
+ * This is the tasklet that updates LED state of LEDs using standard
+ * keyboard triggers. The reason we use tasklet is that we need to
+ * handle the scenario when keyboard handler is not registered yet
+ * but we already getting updates from the VT to update led state.
+ */
+static void kbd_bh(struct tasklet_struct *unused)
+{
+	unsigned int leds;
+	unsigned long flags;
+
+	spin_lock_irqsave(&led_lock, flags);
+	leds = getleds();
+	leds |= (unsigned int)kbd->lockstate << 8;
+	spin_unlock_irqrestore(&led_lock, flags);
+
+	if (vt_switch) {
+		ledstate = ~leds;
+		vt_switch = false;
+	}
+
+	if (leds != ledstate) {
+		kbd_propagate_led_state(ledstate, leds);
+		ledstate = leds;
+	}
+}
+
+#if defined(CONFIG_X86) || defined(CONFIG_IA64) || defined(CONFIG_ALPHA) ||\
+    defined(CONFIG_MIPS) || defined(CONFIG_PPC) || defined(CONFIG_SPARC) ||\
+    defined(CONFIG_PARISC) || defined(CONFIG_SUPERH) ||\
+    (defined(CONFIG_ARM) && defined(CONFIG_KEYBOARD_ATKBD) && !defined(CONFIG_ARCH_RPC))
+
+static inline bool kbd_is_hw_raw(const struct input_dev *dev)
+{
+	if (!test_bit(EV_MSC, dev->evbit) || !test_bit(MSC_RAW, dev->mscbit))
+		return false;
+
+	return dev->id.bustype == BUS_I8042 &&
+		dev->id.vendor == 0x0001 && dev->id.product == 0x0001;
+}
+
+static const unsigned short x86_keycodes[256] =
+	{ 0,  1,  2,  3,  4,  5,  6,  7,  8,  9, 10, 11, 12, 13, 14, 15,
+	 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31,
+	 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47,
+	 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63,
+	 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79,
+	 80, 81, 82, 83, 84,118, 86, 87, 88,115,120,119,121,112,123, 92,
+	284,285,309,  0,312, 91,327,328,329,331,333,335,336,337,338,339,
+	367,288,302,304,350, 89,334,326,267,126,268,269,125,347,348,349,
+	360,261,262,263,268,376,100,101,321,316,373,286,289,102,351,355,
+	103,104,105,275,287,279,258,106,274,107,294,364,358,363,362,361,
+	291,108,381,281,290,272,292,305,280, 99,112,257,306,359,113,114,
+	264,117,271,374,379,265,266, 93, 94, 95, 85,259,375,260, 90,116,
+	377,109,111,277,278,282,283,295,296,297,299,300,301,293,303,307,
+	308,310,313,314,315,317,318,319,320,357,322,323,324,325,276,330,
+	332,340,365,342,343,344,345,346,356,270,341,368,369,370,371,372 };
+
+#ifdef CONFIG_SPARC
+static int sparc_l1_a_state;
+extern void sun_do_break(void);
+#endif
+
+static int emulate_raw(struct vc_data *vc, unsigned int keycode,
+		       unsigned char up_flag)
+{
+	int code;
+
+	switch (keycode) {
+
+	case KEY_PAUSE:
+		put_queue(vc, 0xe1);
+		put_queue(vc, 0x1d | up_flag);
+		put_queue(vc, 0x45 | up_flag);
+		break;
+
+	case KEY_HANGEUL:
+		if (!up_flag)
+			put_queue(vc, 0xf2);
+		break;
+
+	case KEY_HANJA:
+		if (!up_flag)
+			put_queue(vc, 0xf1);
+		break;
+
+	case KEY_SYSRQ:
+		/*
+		 * Real AT keyboards (that's what we're trying
+		 * to emulate here) emit 0xe0 0x2a 0xe0 0x37 when
+		 * pressing PrtSc/SysRq alone, but simply 0x54
+		 * when pressing Alt+PrtSc/SysRq.
+		 */
+		if (test_bit(KEY_LEFTALT, key_down) ||
+		    test_bit(KEY_RIGHTALT, key_down)) {
+			put_queue(vc, 0x54 | up_flag);
+		} else {
+			put_queue(vc, 0xe0);
+			put_queue(vc, 0x2a | up_flag);
+			put_queue(vc, 0xe0);
+			put_queue(vc, 0x37 | up_flag);
+		}
+		break;
+
+	default:
+		if (keycode > 255)
+			return -1;
+
+		code = x86_keycodes[keycode];
+		if (!code)
+			return -1;
+
+		if (code & 0x100)
+			put_queue(vc, 0xe0);
+		put_queue(vc, (code & 0x7f) | up_flag);
+
+		break;
+	}
+
+	return 0;
+}
+
+#else
+
+static inline bool kbd_is_hw_raw(const struct input_dev *dev)
+{
+	return false;
+}
+
+static int emulate_raw(struct vc_data *vc, unsigned int keycode, unsigned char up_flag)
+{
+	if (keycode > 127)
+		return -1;
+
+	put_queue(vc, keycode | up_flag);
+	return 0;
+}
+#endif
+
+static void kbd_rawcode(unsigned char data)
+{
+	struct vc_data *vc = vc_cons[fg_console].d;
+
+	kbd = &kbd_table[vc->vc_num];
+	if (kbd->kbdmode == VC_RAW)
+		put_queue(vc, data);
+}
+
+static void kbd_keycode(unsigned int keycode, int down, bool hw_raw)
+{
+	struct vc_data *vc = vc_cons[fg_console].d;
+	unsigned short keysym, *key_map;
+	unsigned char type;
+	bool raw_mode;
+	struct tty_struct *tty;
+	int shift_final;
+	struct keyboard_notifier_param param = { .vc = vc, .value = keycode, .down = down };
+	int rc;
+
+	tty = vc->port.tty;
+
+	if (tty && (!tty->driver_data)) {
+		/* No driver data? Strange. Okay we fix it then. */
+		tty->driver_data = vc;
+	}
+
+	kbd = &kbd_table[vc->vc_num];
+
+#ifdef CONFIG_SPARC
+	if (keycode == KEY_STOP)
+		sparc_l1_a_state = down;
+#endif
+
+	rep = (down == 2);
+
+	raw_mode = (kbd->kbdmode == VC_RAW);
+	if (raw_mode && !hw_raw)
+		if (emulate_raw(vc, keycode, !down << 7))
+			if (keycode < BTN_MISC && printk_ratelimit())
+				pr_warn("can't emulate rawmode for keycode %d\n",
+					keycode);
+
+#ifdef CONFIG_SPARC
+	if (keycode == KEY_A && sparc_l1_a_state) {
+		sparc_l1_a_state = false;
+		sun_do_break();
+	}
+#endif
+
+	if (kbd->kbdmode == VC_MEDIUMRAW) {
+		/*
+		 * This is extended medium raw mode, with keys above 127
+		 * encoded as 0, high 7 bits, low 7 bits, with the 0 bearing
+		 * the 'up' flag if needed. 0 is reserved, so this shouldn't
+		 * interfere with anything else. The two bytes after 0 will
+		 * always have the up flag set not to interfere with older
+		 * applications. This allows for 16384 different keycodes,
+		 * which should be enough.
+		 */
+		if (keycode < 128) {
+			put_queue(vc, keycode | (!down << 7));
+		} else {
+			put_queue(vc, !down << 7);
+			put_queue(vc, (keycode >> 7) | BIT(7));
+			put_queue(vc, keycode | BIT(7));
+		}
+		raw_mode = true;
+	}
+
+	assign_bit(keycode, key_down, down);
+
+	if (rep &&
+	    (!vc_kbd_mode(kbd, VC_REPEAT) ||
+	     (tty && !L_ECHO(tty) && tty_chars_in_buffer(tty)))) {
+		/*
+		 * Don't repeat a key if the input buffers are not empty and the
+		 * characters get aren't echoed locally. This makes key repeat
+		 * usable with slow applications and under heavy loads.
+		 */
+		return;
+	}
+
+	param.shift = shift_final = (shift_state | kbd->slockstate) ^ kbd->lockstate;
+	param.ledstate = kbd->ledflagstate;
+	key_map = key_maps[shift_final];
+
+	rc = atomic_notifier_call_chain(&keyboard_notifier_list,
+					KBD_KEYCODE, &param);
+	if (rc == NOTIFY_STOP || !key_map) {
+		atomic_notifier_call_chain(&keyboard_notifier_list,
+					   KBD_UNBOUND_KEYCODE, &param);
+		do_compute_shiftstate();
+		kbd->slockstate = 0;
+		return;
+	}
+
+	if (keycode < NR_KEYS)
+		keysym = key_map[keycode];
+	else if (keycode >= KEY_BRL_DOT1 && keycode <= KEY_BRL_DOT8)
+		keysym = U(K(KT_BRL, keycode - KEY_BRL_DOT1 + 1));
+	else
+		return;
+
+	type = KTYP(keysym);
+
+	if (type < 0xf0) {
+		param.value = keysym;
+		rc = atomic_notifier_call_chain(&keyboard_notifier_list,
+						KBD_UNICODE, &param);
+		if (rc != NOTIFY_STOP)
+			if (down && !raw_mode)
+				k_unicode(vc, keysym, !down);
+		return;
+	}
+
+	type -= 0xf0;
+
+	if (type == KT_LETTER) {
+		type = KT_LATIN;
+		if (vc_kbd_led(kbd, VC_CAPSLOCK)) {
+			key_map = key_maps[shift_final ^ BIT(KG_SHIFT)];
+			if (key_map)
+				keysym = key_map[keycode];
+		}
+	}
+
+	param.value = keysym;
+	rc = atomic_notifier_call_chain(&keyboard_notifier_list,
+					KBD_KEYSYM, &param);
+	if (rc == NOTIFY_STOP)
+		return;
+
+	if ((raw_mode || kbd->kbdmode == VC_OFF) && type != KT_SPEC && type != KT_SHIFT)
+		return;
+
+	(*k_handler[type])(vc, keysym & 0xff, !down);
+
+	param.ledstate = kbd->ledflagstate;
+	atomic_notifier_call_chain(&keyboard_notifier_list, KBD_POST_KEYSYM, &param);
+
+	if (type != KT_SLOCK)
+		kbd->slockstate = 0;
+}
+
+static void kbd_event(struct input_handle *handle, unsigned int event_type,
+		      unsigned int event_code, int value)
+{
+	/* We are called with interrupts disabled, just take the lock */
+	spin_lock(&kbd_event_lock);
+
+	if (event_type == EV_MSC && event_code == MSC_RAW &&
+			kbd_is_hw_raw(handle->dev))
+		kbd_rawcode(value);
+	if (event_type == EV_KEY && event_code <= KEY_MAX)
+		kbd_keycode(event_code, value, kbd_is_hw_raw(handle->dev));
+
+	spin_unlock(&kbd_event_lock);
+
+	tasklet_schedule(&keyboard_tasklet);
+	do_poke_blanked_console = 1;
+	schedule_console_callback();
+}
+
+static bool kbd_match(struct input_handler *handler, struct input_dev *dev)
+{
+	if (test_bit(EV_SND, dev->evbit))
+		return true;
+
+	if (test_bit(EV_KEY, dev->evbit)) {
+		if (find_next_bit(dev->keybit, BTN_MISC, KEY_RESERVED) <
+				BTN_MISC)
+			return true;
+		if (find_next_bit(dev->keybit, KEY_BRL_DOT10 + 1,
+					KEY_BRL_DOT1) <= KEY_BRL_DOT10)
+			return true;
+	}
+
+	return false;
+}
+
+/*
+ * When a keyboard (or other input device) is found, the kbd_connect
+ * function is called. The function then looks at the device, and if it
+ * likes it, it can open it and get events from it. In this (kbd_connect)
+ * function, we should decide which VT to bind that keyboard to initially.
+ */
+static int kbd_connect(struct input_handler *handler, struct input_dev *dev,
+			const struct input_device_id *id)
+{
+	struct input_handle *handle;
+	int error;
+
+	handle = kzalloc(sizeof(struct input_handle), GFP_KERNEL);
+	if (!handle)
+		return -ENOMEM;
+
+	handle->dev = dev;
+	handle->handler = handler;
+	handle->name = "kbd";
+
+	error = input_register_handle(handle);
+	if (error)
+		goto err_free_handle;
+
+	error = input_open_device(handle);
+	if (error)
+		goto err_unregister_handle;
+
+	return 0;
+
+ err_unregister_handle:
+	input_unregister_handle(handle);
+ err_free_handle:
+	kfree(handle);
+	return error;
+}
+
+static void kbd_disconnect(struct input_handle *handle)
+{
+	input_close_device(handle);
+	input_unregister_handle(handle);
+	kfree(handle);
+}
+
+/*
+ * Start keyboard handler on the new keyboard by refreshing LED state to
+ * match the rest of the system.
+ */
+static void kbd_start(struct input_handle *handle)
+{
+	tasklet_disable(&keyboard_tasklet);
+
+	if (ledstate != -1U)
+		kbd_update_leds_helper(handle, &ledstate);
+
+	tasklet_enable(&keyboard_tasklet);
+}
+
+static const struct input_device_id kbd_ids[] = {
+	{
+		.flags = INPUT_DEVICE_ID_MATCH_EVBIT,
+		.evbit = { BIT_MASK(EV_KEY) },
+	},
+
+	{
+		.flags = INPUT_DEVICE_ID_MATCH_EVBIT,
+		.evbit = { BIT_MASK(EV_SND) },
+	},
+
+	{ },    /* Terminating entry */
+};
+
+MODULE_DEVICE_TABLE(input, kbd_ids);
+
+static struct input_handler kbd_handler = {
+	.event		= kbd_event,
+	.match		= kbd_match,
+	.connect	= kbd_connect,
+	.disconnect	= kbd_disconnect,
+	.start		= kbd_start,
+	.name		= "kbd",
+	.id_table	= kbd_ids,
+};
+
+int __init kbd_init(void)
+{
+	int i;
+	int error;
+
+	for (i = 0; i < MAX_NR_CONSOLES; i++) {
+		kbd_table[i].ledflagstate = kbd_defleds();
+		kbd_table[i].default_ledflagstate = kbd_defleds();
+		kbd_table[i].ledmode = LED_SHOW_FLAGS;
+		kbd_table[i].lockstate = KBD_DEFLOCK;
+		kbd_table[i].slockstate = 0;
+		kbd_table[i].modeflags = KBD_DEFMODE;
+		kbd_table[i].kbdmode = default_utf8 ? VC_UNICODE : VC_XLATE;
+	}
+
+	kbd_init_leds();
+
+	error = input_register_handler(&kbd_handler);
+	if (error)
+		return error;
+
+	tasklet_enable(&keyboard_tasklet);
+	tasklet_schedule(&keyboard_tasklet);
+
+	return 0;
+}
+
+/* Ioctl support code */
+
+/**
+ *	vt_do_diacrit		-	diacritical table updates
+ *	@cmd: ioctl request
+ *	@udp: pointer to user data for ioctl
+ *	@perm: permissions check computed by caller
+ *
+ *	Update the diacritical tables atomically and safely. Lock them
+ *	against simultaneous keypresses
+ */
+int vt_do_diacrit(unsigned int cmd, void __user *udp, int perm)
+{
+	unsigned long flags;
+	int asize;
+	int ret = 0;
+
+	switch (cmd) {
+	case KDGKBDIACR:
+	{
+		struct kbdiacrs __user *a = udp;
+		struct kbdiacr *dia;
+		int i;
+
+		dia = kmalloc_array(MAX_DIACR, sizeof(struct kbdiacr),
+								GFP_KERNEL);
+		if (!dia)
+			return -ENOMEM;
+
+		/* Lock the diacriticals table, make a copy and then
+		   copy it after we unlock */
+		spin_lock_irqsave(&kbd_event_lock, flags);
+
+		asize = accent_table_size;
+		for (i = 0; i < asize; i++) {
+			dia[i].diacr = conv_uni_to_8bit(
+						accent_table[i].diacr);
+			dia[i].base = conv_uni_to_8bit(
+						accent_table[i].base);
+			dia[i].result = conv_uni_to_8bit(
+						accent_table[i].result);
+		}
+		spin_unlock_irqrestore(&kbd_event_lock, flags);
+
+		if (put_user(asize, &a->kb_cnt))
+			ret = -EFAULT;
+		else  if (copy_to_user(a->kbdiacr, dia,
+				asize * sizeof(struct kbdiacr)))
+			ret = -EFAULT;
+		kfree(dia);
+		return ret;
+	}
+	case KDGKBDIACRUC:
+	{
+		struct kbdiacrsuc __user *a = udp;
+		void *buf;
+
+		buf = kmalloc_array(MAX_DIACR, sizeof(struct kbdiacruc),
+								GFP_KERNEL);
+		if (buf == NULL)
+			return -ENOMEM;
+
+		/* Lock the diacriticals table, make a copy and then
+		   copy it after we unlock */
+		spin_lock_irqsave(&kbd_event_lock, flags);
+
+		asize = accent_table_size;
+		memcpy(buf, accent_table, asize * sizeof(struct kbdiacruc));
+
+		spin_unlock_irqrestore(&kbd_event_lock, flags);
+
+		if (put_user(asize, &a->kb_cnt))
+			ret = -EFAULT;
+		else if (copy_to_user(a->kbdiacruc, buf,
+				asize*sizeof(struct kbdiacruc)))
+			ret = -EFAULT;
+		kfree(buf);
+		return ret;
+	}
+
+	case KDSKBDIACR:
+	{
+		struct kbdiacrs __user *a = udp;
+		struct kbdiacr *dia = NULL;
+		unsigned int ct;
+		int i;
+
+		if (!perm)
+			return -EPERM;
+		if (get_user(ct, &a->kb_cnt))
+			return -EFAULT;
+		if (ct >= MAX_DIACR)
+			return -EINVAL;
+
+		if (ct) {
+
+			dia = memdup_user(a->kbdiacr,
+					sizeof(struct kbdiacr) * ct);
+			if (IS_ERR(dia))
+				return PTR_ERR(dia);
+
+		}
+
+		spin_lock_irqsave(&kbd_event_lock, flags);
+		accent_table_size = ct;
+		for (i = 0; i < ct; i++) {
+			accent_table[i].diacr =
+					conv_8bit_to_uni(dia[i].diacr);
+			accent_table[i].base =
+					conv_8bit_to_uni(dia[i].base);
+			accent_table[i].result =
+					conv_8bit_to_uni(dia[i].result);
+		}
+		spin_unlock_irqrestore(&kbd_event_lock, flags);
+		kfree(dia);
+		return 0;
+	}
+
+	case KDSKBDIACRUC:
+	{
+		struct kbdiacrsuc __user *a = udp;
+		unsigned int ct;
+		void *buf = NULL;
+
+		if (!perm)
+			return -EPERM;
+
+		if (get_user(ct, &a->kb_cnt))
+			return -EFAULT;
+
+		if (ct >= MAX_DIACR)
+			return -EINVAL;
+
+		if (ct) {
+			buf = memdup_user(a->kbdiacruc,
+					  ct * sizeof(struct kbdiacruc));
+			if (IS_ERR(buf))
+				return PTR_ERR(buf);
+		} 
+		spin_lock_irqsave(&kbd_event_lock, flags);
+		if (ct)
+			memcpy(accent_table, buf,
+					ct * sizeof(struct kbdiacruc));
+		accent_table_size = ct;
+		spin_unlock_irqrestore(&kbd_event_lock, flags);
+		kfree(buf);
+		return 0;
+	}
+	}
+	return ret;
+}
+
+/**
+ *	vt_do_kdskbmode		-	set keyboard mode ioctl
+ *	@console: the console to use
+ *	@arg: the requested mode
+ *
+ *	Update the keyboard mode bits while holding the correct locks.
+ *	Return 0 for success or an error code.
+ */
+int vt_do_kdskbmode(unsigned int console, unsigned int arg)
+{
+	struct kbd_struct *kb = &kbd_table[console];
+	int ret = 0;
+	unsigned long flags;
+
+	spin_lock_irqsave(&kbd_event_lock, flags);
+	switch(arg) {
+	case K_RAW:
+		kb->kbdmode = VC_RAW;
+		break;
+	case K_MEDIUMRAW:
+		kb->kbdmode = VC_MEDIUMRAW;
+		break;
+	case K_XLATE:
+		kb->kbdmode = VC_XLATE;
+		do_compute_shiftstate();
+		break;
+	case K_UNICODE:
+		kb->kbdmode = VC_UNICODE;
+		do_compute_shiftstate();
+		break;
+	case K_OFF:
+		kb->kbdmode = VC_OFF;
+		break;
+	default:
+		ret = -EINVAL;
+	}
+	spin_unlock_irqrestore(&kbd_event_lock, flags);
+	return ret;
+}
+
+/**
+ *	vt_do_kdskbmeta		-	set keyboard meta state
+ *	@console: the console to use
+ *	@arg: the requested meta state
+ *
+ *	Update the keyboard meta bits while holding the correct locks.
+ *	Return 0 for success or an error code.
+ */
+int vt_do_kdskbmeta(unsigned int console, unsigned int arg)
+{
+	struct kbd_struct *kb = &kbd_table[console];
+	int ret = 0;
+	unsigned long flags;
+
+	spin_lock_irqsave(&kbd_event_lock, flags);
+	switch(arg) {
+	case K_METABIT:
+		clr_vc_kbd_mode(kb, VC_META);
+		break;
+	case K_ESCPREFIX:
+		set_vc_kbd_mode(kb, VC_META);
+		break;
+	default:
+		ret = -EINVAL;
+	}
+	spin_unlock_irqrestore(&kbd_event_lock, flags);
+	return ret;
+}
+
+int vt_do_kbkeycode_ioctl(int cmd, struct kbkeycode __user *user_kbkc,
+								int perm)
+{
+	struct kbkeycode tmp;
+	int kc = 0;
+
+	if (copy_from_user(&tmp, user_kbkc, sizeof(struct kbkeycode)))
+		return -EFAULT;
+	switch (cmd) {
+	case KDGETKEYCODE:
+		kc = getkeycode(tmp.scancode);
+		if (kc >= 0)
+			kc = put_user(kc, &user_kbkc->keycode);
+		break;
+	case KDSETKEYCODE:
+		if (!perm)
+			return -EPERM;
+		kc = setkeycode(tmp.scancode, tmp.keycode);
+		break;
+	}
+	return kc;
+}
+
+static unsigned short vt_kdgkbent(unsigned char kbdmode, unsigned char idx,
+		unsigned char map)
+{
+	unsigned short *key_map, val;
+	unsigned long flags;
+
+	/* Ensure another thread doesn't free it under us */
+	spin_lock_irqsave(&kbd_event_lock, flags);
+	key_map = key_maps[map];
+	if (key_map) {
+		val = U(key_map[idx]);
+		if (kbdmode != VC_UNICODE && KTYP(val) >= NR_TYPES)
+			val = K_HOLE;
+	} else
+		val = idx ? K_HOLE : K_NOSUCHMAP;
+	spin_unlock_irqrestore(&kbd_event_lock, flags);
+
+	return val;
+}
+
+static int vt_kdskbent(unsigned char kbdmode, unsigned char idx,
+		unsigned char map, unsigned short val)
+{
+	unsigned long flags;
+	unsigned short *key_map, *new_map, oldval;
+
+	if (!idx && val == K_NOSUCHMAP) {
+		spin_lock_irqsave(&kbd_event_lock, flags);
+		/* deallocate map */
+		key_map = key_maps[map];
+		if (map && key_map) {
+			key_maps[map] = NULL;
+			if (key_map[0] == U(K_ALLOCATED)) {
+				kfree(key_map);
+				keymap_count--;
+			}
+		}
+		spin_unlock_irqrestore(&kbd_event_lock, flags);
+
+		return 0;
+	}
+
+	if (KTYP(val) < NR_TYPES) {
+		if (KVAL(val) > max_vals[KTYP(val)])
+			return -EINVAL;
+	} else if (kbdmode != VC_UNICODE)
+		return -EINVAL;
+
+	/* ++Geert: non-PC keyboards may generate keycode zero */
+#if !defined(__mc68000__) && !defined(__powerpc__)
+	/* assignment to entry 0 only tests validity of args */
+	if (!idx)
+		return 0;
+#endif
+
+	new_map = kmalloc(sizeof(plain_map), GFP_KERNEL);
+	if (!new_map)
+		return -ENOMEM;
+
+	spin_lock_irqsave(&kbd_event_lock, flags);
+	key_map = key_maps[map];
+	if (key_map == NULL) {
+		int j;
+
+		if (keymap_count >= MAX_NR_OF_USER_KEYMAPS &&
+		    !capable(CAP_SYS_RESOURCE)) {
+			spin_unlock_irqrestore(&kbd_event_lock, flags);
+			kfree(new_map);
+			return -EPERM;
+		}
+		key_maps[map] = new_map;
+		key_map = new_map;
+		key_map[0] = U(K_ALLOCATED);
+		for (j = 1; j < NR_KEYS; j++)
+			key_map[j] = U(K_HOLE);
+		keymap_count++;
+	} else
+		kfree(new_map);
+
+	oldval = U(key_map[idx]);
+	if (val == oldval)
+		goto out;
+
+	/* Attention Key */
+	if ((oldval == K_SAK || val == K_SAK) && !capable(CAP_SYS_ADMIN)) {
+		spin_unlock_irqrestore(&kbd_event_lock, flags);
+		return -EPERM;
+	}
+
+	key_map[idx] = U(val);
+	if (!map && (KTYP(oldval) == KT_SHIFT || KTYP(val) == KT_SHIFT))
+		do_compute_shiftstate();
+out:
+	spin_unlock_irqrestore(&kbd_event_lock, flags);
+
+	return 0;
+}
+
+int vt_do_kdsk_ioctl(int cmd, struct kbentry __user *user_kbe, int perm,
+						unsigned int console)
+{
+	struct kbd_struct *kb = &kbd_table[console];
+	struct kbentry kbe;
+
+	if (copy_from_user(&kbe, user_kbe, sizeof(struct kbentry)))
+		return -EFAULT;
+
+	switch (cmd) {
+	case KDGKBENT:
+		return put_user(vt_kdgkbent(kb->kbdmode, kbe.kb_index,
+					kbe.kb_table),
+				&user_kbe->kb_value);
+	case KDSKBENT:
+		if (!perm || !capable(CAP_SYS_TTY_CONFIG))
+			return -EPERM;
+		return vt_kdskbent(kb->kbdmode, kbe.kb_index, kbe.kb_table,
+				kbe.kb_value);
+	}
+	return 0;
+}
+
+static char *vt_kdskbsent(char *kbs, unsigned char cur)
+{
+	static DECLARE_BITMAP(is_kmalloc, MAX_NR_FUNC);
+	char *cur_f = func_table[cur];
+
+	if (cur_f && strlen(cur_f) >= strlen(kbs)) {
+		strcpy(cur_f, kbs);
+		return kbs;
+	}
+
+	func_table[cur] = kbs;
+
+	return __test_and_set_bit(cur, is_kmalloc) ? cur_f : NULL;
+}
+
+int vt_do_kdgkb_ioctl(int cmd, struct kbsentry __user *user_kdgkb, int perm)
+{
+	unsigned char kb_func;
+	unsigned long flags;
+	char *kbs;
+	int ret;
+
+	if (get_user(kb_func, &user_kdgkb->kb_func))
+		return -EFAULT;
+
+	kb_func = array_index_nospec(kb_func, MAX_NR_FUNC);
+
+	switch (cmd) {
+	case KDGKBSENT: {
+		/* size should have been a struct member */
+		ssize_t len = sizeof(user_kdgkb->kb_string);
+
+		kbs = kmalloc(len, GFP_KERNEL);
+		if (!kbs)
+			return -ENOMEM;
+
+		spin_lock_irqsave(&func_buf_lock, flags);
+		len = strlcpy(kbs, func_table[kb_func] ? : "", len);
+		spin_unlock_irqrestore(&func_buf_lock, flags);
+
+		ret = copy_to_user(user_kdgkb->kb_string, kbs, len + 1) ?
+			-EFAULT : 0;
+
+		break;
+	}
+	case KDSKBSENT:
+		if (!perm || !capable(CAP_SYS_TTY_CONFIG))
+			return -EPERM;
+
+		kbs = strndup_user(user_kdgkb->kb_string,
+				sizeof(user_kdgkb->kb_string));
+		if (IS_ERR(kbs))
+			return PTR_ERR(kbs);
+
+		spin_lock_irqsave(&func_buf_lock, flags);
+		kbs = vt_kdskbsent(kbs, kb_func);
+		spin_unlock_irqrestore(&func_buf_lock, flags);
+
+		ret = 0;
+		break;
+	}
+
+	kfree(kbs);
+
+	return ret;
+}
+
+int vt_do_kdskled(unsigned int console, int cmd, unsigned long arg, int perm)
+{
+	struct kbd_struct *kb = &kbd_table[console];
+        unsigned long flags;
+	unsigned char ucval;
+
+        switch(cmd) {
+	/* the ioctls below read/set the flags usually shown in the leds */
+	/* don't use them - they will go away without warning */
+	case KDGKBLED:
+                spin_lock_irqsave(&kbd_event_lock, flags);
+		ucval = kb->ledflagstate | (kb->default_ledflagstate << 4);
+                spin_unlock_irqrestore(&kbd_event_lock, flags);
+		return put_user(ucval, (char __user *)arg);
+
+	case KDSKBLED:
+		if (!perm)
+			return -EPERM;
+		if (arg & ~0x77)
+			return -EINVAL;
+                spin_lock_irqsave(&led_lock, flags);
+		kb->ledflagstate = (arg & 7);
+		kb->default_ledflagstate = ((arg >> 4) & 7);
+		set_leds();
+                spin_unlock_irqrestore(&led_lock, flags);
+		return 0;
+
+	/* the ioctls below only set the lights, not the functions */
+	/* for those, see KDGKBLED and KDSKBLED above */
+	case KDGETLED:
+		ucval = getledstate();
+		return put_user(ucval, (char __user *)arg);
+
+	case KDSETLED:
+		if (!perm)
+			return -EPERM;
+		setledstate(kb, arg);
+		return 0;
+        }
+        return -ENOIOCTLCMD;
+}
+
+int vt_do_kdgkbmode(unsigned int console)
+{
+	struct kbd_struct *kb = &kbd_table[console];
+	/* This is a spot read so needs no locking */
+	switch (kb->kbdmode) {
+	case VC_RAW:
+		return K_RAW;
+	case VC_MEDIUMRAW:
+		return K_MEDIUMRAW;
+	case VC_UNICODE:
+		return K_UNICODE;
+	case VC_OFF:
+		return K_OFF;
+	default:
+		return K_XLATE;
+	}
+}
+
+/**
+ *	vt_do_kdgkbmeta		-	report meta status
+ *	@console: console to report
+ *
+ *	Report the meta flag status of this console
+ */
+int vt_do_kdgkbmeta(unsigned int console)
+{
+	struct kbd_struct *kb = &kbd_table[console];
+        /* Again a spot read so no locking */
+	return vc_kbd_mode(kb, VC_META) ? K_ESCPREFIX : K_METABIT;
+}
+
+/**
+ *	vt_reset_unicode	-	reset the unicode status
+ *	@console: console being reset
+ *
+ *	Restore the unicode console state to its default
+ */
+void vt_reset_unicode(unsigned int console)
+{
+	unsigned long flags;
+
+	spin_lock_irqsave(&kbd_event_lock, flags);
+	kbd_table[console].kbdmode = default_utf8 ? VC_UNICODE : VC_XLATE;
+	spin_unlock_irqrestore(&kbd_event_lock, flags);
+}
+
+/**
+ *	vt_get_shift_state	-	shift bit state
+ *
+ *	Report the shift bits from the keyboard state. We have to export
+ *	this to support some oddities in the vt layer.
+ */
+int vt_get_shift_state(void)
+{
+        /* Don't lock as this is a transient report */
+        return shift_state;
+}
+
+/**
+ *	vt_reset_keyboard	-	reset keyboard state
+ *	@console: console to reset
+ *
+ *	Reset the keyboard bits for a console as part of a general console
+ *	reset event
+ */
+void vt_reset_keyboard(unsigned int console)
+{
+	struct kbd_struct *kb = &kbd_table[console];
+	unsigned long flags;
+
+	spin_lock_irqsave(&kbd_event_lock, flags);
+	set_vc_kbd_mode(kb, VC_REPEAT);
+	clr_vc_kbd_mode(kb, VC_CKMODE);
+	clr_vc_kbd_mode(kb, VC_APPLIC);
+	clr_vc_kbd_mode(kb, VC_CRLF);
+	kb->lockstate = 0;
+	kb->slockstate = 0;
+	spin_lock(&led_lock);
+	kb->ledmode = LED_SHOW_FLAGS;
+	kb->ledflagstate = kb->default_ledflagstate;
+	spin_unlock(&led_lock);
+	/* do not do set_leds here because this causes an endless tasklet loop
+	   when the keyboard hasn't been initialized yet */
+	spin_unlock_irqrestore(&kbd_event_lock, flags);
+}
+
+/**
+ *	vt_get_kbd_mode_bit	-	read keyboard status bits
+ *	@console: console to read from
+ *	@bit: mode bit to read
+ *
+ *	Report back a vt mode bit. We do this without locking so the
+ *	caller must be sure that there are no synchronization needs
+ */
+
+int vt_get_kbd_mode_bit(unsigned int console, int bit)
+{
+	struct kbd_struct *kb = &kbd_table[console];
+	return vc_kbd_mode(kb, bit);
+}
+
+/**
+ *	vt_set_kbd_mode_bit	-	read keyboard status bits
+ *	@console: console to read from
+ *	@bit: mode bit to read
+ *
+ *	Set a vt mode bit. We do this without locking so the
+ *	caller must be sure that there are no synchronization needs
+ */
+
+void vt_set_kbd_mode_bit(unsigned int console, int bit)
+{
+	struct kbd_struct *kb = &kbd_table[console];
+	unsigned long flags;
+
+	spin_lock_irqsave(&kbd_event_lock, flags);
+	set_vc_kbd_mode(kb, bit);
+	spin_unlock_irqrestore(&kbd_event_lock, flags);
+}
+
+/**
+ *	vt_clr_kbd_mode_bit	-	read keyboard status bits
+ *	@console: console to read from
+ *	@bit: mode bit to read
+ *
+ *	Report back a vt mode bit. We do this without locking so the
+ *	caller must be sure that there are no synchronization needs
+ */
+
+void vt_clr_kbd_mode_bit(unsigned int console, int bit)
+{
+	struct kbd_struct *kb = &kbd_table[console];
+	unsigned long flags;
+
+	spin_lock_irqsave(&kbd_event_lock, flags);
+	clr_vc_kbd_mode(kb, bit);
+	spin_unlock_irqrestore(&kbd_event_lock, flags);
+}