include/linux/keyboard.h

#ifndef __LINUX_KEYBOARD_H
#define __LINUX_KEYBOARD_H

#include <linux/interrupt.h>
#define set_leds() mark_bh(KEYBOARD_BH)

/*
 * Global flags: things that don't change between virtual consoles.
 * This includes things like "key-down" flags - if the shift key is
 * down when you change a console, it's down in both.
 *
 * Note that the KG_CAPSLOCK flags is NOT the flag that decides if
 * capslock is on or not: it's just a flag about the key being
 * physically down. The actual capslock status is in the local flags.
 */
extern unsigned long kbd_flags;

/*
 * These are the hardcoded global flags - use the numbers beyond 16
 * for non-standard or keyboard-dependent flags
 */
#define KG_LSHIFT	0
#define KG_RSHIFT	1
#define KG_LCTRL	2
#define KG_RCTRL	3
#define KG_LALT		4
#define KG_RALT		5	/* doesn't exist, but.. */
#define KG_LALTGR	6	/* doesn't exist, but.. */
#define KG_RALTGR	7
#define KG_CAPSLOCK	8

/*
 * "dead" keys - prefix key values that are valid only for the next
 * character code (sticky shift, E0/E1 special scancodes, diacriticals)
 */
extern unsigned long kbd_dead_keys;
extern unsigned long kbd_prev_dead_keys;

/*
 * these are the hardcoded dead key flags
 */
#define KGD_E0		0
#define KGD_E1		1

/*
 * kbd->xxx contains the VC-local things (flag settings etc..)
 * The low 3 local flags are hardcoded to be the led setting..
 */
struct kbd_struct {
	unsigned long flags;
	unsigned long default_flags;
};

extern struct kbd_struct kbd_table[];

/*
 * These are the local "softflags", giving actual keyboard modes. The
 * three first flags are coded to the led settings.
 */
#define VC_SCROLLOCK	0	/* scroll-lock mode */
#define VC_NUMLOCK	1	/* numeric lock mode */
#define VC_CAPSLOCK	2	/* capslock mode */
#define VC_APPLIC	3	/* application key mode */
#define VC_CKMODE	5	/* cursor key mode */
#define VC_REPEAT	6	/* keyboard repeat */
#define VC_RAW		7	/* raw (scancode) mode */
#define VC_CRLF		8	/* 0 - enter sends CR, 1 - enter sends CRLF */
#define VC_META		9	/* 0 - meta, 1 - meta=prefix with ESC */
#define VC_PAUSE	10	/* pause key pressed */

#define LED_MASK	7

extern unsigned long kbd_init(unsigned long);

extern inline int kbd_flag(int flag)
{
	return kbd_flags & (1 << flag);
}

extern inline void set_kbd_flag(int flag)
{
	kbd_flags |= 1 << flag;
}

extern inline void clr_kbd_flag(int flag)
{
	kbd_flags &= ~(1 << flag);
}

extern inline void chg_kbd_flag(int flag)
{
	kbd_flags ^= 1 << flag;
}

extern inline int kbd_dead(int flag)
{
	return kbd_prev_dead_keys & (1 << flag);
}

extern inline void set_kbd_dead(int flag)
{
	kbd_dead_keys |= 1 << flag;
}

extern inline void clr_kbd_dead(int flag)
{
	kbd_dead_keys &= ~(1 << flag);
}

extern inline void chg_kbd_dead(int flag)
{
	kbd_dead_keys ^= 1 << flag;
}

extern inline int vc_kbd_flag(struct kbd_struct * kbd, int flag)
{
	return ((kbd->flags >> flag) & 1);
}

extern inline void set_vc_kbd_flag(struct kbd_struct * kbd, int flag)
{
	kbd->flags |= 1 << flag;
}

extern inline void clr_vc_kbd_flag(struct kbd_struct * kbd, int flag)
{
	kbd->flags &= ~(1 << flag);
}

extern inline void chg_vc_kbd_flag(struct kbd_struct * kbd, int flag)
{
	kbd->flags ^= 1 << flag;
}

#define NR_KEYS 112
#define NR_KEYMAPS 3
extern const int NR_TYPES;
extern const int max_vals[];
extern unsigned short key_map[NR_KEYMAPS][NR_KEYS];

#define KT_LATIN	0	/* we depend on this being zero */
#define KT_FN		1
#define KT_SPEC		2
#define KT_PAD		3
#define KT_DEAD		4
#define KT_CONS		5
#define KT_CUR		6
#define KT_SHIFT	7

#define K(t,v)		(((t)<<8)|(v))
#define KTYP(x)		((x) >> 8)
#define KVAL(x)		((x) & 0xff)

#define K_F1		K(KT_FN,0)
#define K_F2		K(KT_FN,1)
#define K_F3		K(KT_FN,2)
#define K_F4		K(KT_FN,3)
#define K_F5		K(KT_FN,4)
#define K_F6		K(KT_FN,5)
#define K_F7		K(KT_FN,6)
#define K_F8		K(KT_FN,7)
#define K_F9		K(KT_FN,8)
#define K_F10		K(KT_FN,9)
#define K_F11		K(KT_FN,10)
#define K_F12		K(KT_FN,11)
#define K_F13		K(KT_FN,12)
#define K_F14		K(KT_FN,13)
#define K_F15		K(KT_FN,14)
#define K_F16		K(KT_FN,15)
#define K_F17		K(KT_FN,16)
#define K_F18		K(KT_FN,17)
#define K_F19		K(KT_FN,18)
#define K_F20		K(KT_FN,19)
#define K_FIND		K(KT_FN,20)
#define K_INSERT	K(KT_FN,21)
#define K_REMOVE	K(KT_FN,22)
#define K_SELECT	K(KT_FN,23)
#define K_PGUP		K(KT_FN,24)
#define K_PGDN		K(KT_FN,25)

#define K_HOLE		K(KT_SPEC,0)
#define K_ENTER		K(KT_SPEC,1)
#define K_SH_REGS	K(KT_SPEC,2)
#define K_SH_MEM	K(KT_SPEC,3)
#define K_SH_STAT	K(KT_SPEC,4)
#define K_BREAK		K(KT_SPEC,5)
#define K_CONS		K(KT_SPEC,6)
#define K_CAPS		K(KT_SPEC,7)
#define K_NUM		K(KT_SPEC,8)
#define K_HOLD		K(KT_SPEC,9)

#define K_P0		K(KT_PAD,0)
#define K_P1		K(KT_PAD,1)
#define K_P2		K(KT_PAD,2)
#define K_P3		K(KT_PAD,3)
#define K_P4		K(KT_PAD,4)
#define K_P5		K(KT_PAD,5)
#define K_P6		K(KT_PAD,6)
#define K_P7		K(KT_PAD,7)
#define K_P8		K(KT_PAD,8)
#define K_P9		K(KT_PAD,9)
#define K_PPLUS		K(KT_PAD,10)	/* key-pad plus			   */
#define K_PMINUS	K(KT_PAD,11)	/* key-pad minus		   */
#define K_PSTAR		K(KT_PAD,12)	/* key-pad asterisk (star)	   */
#define K_PSLASH	K(KT_PAD,13)	/* key-pad slash		   */
#define K_PENTER	K(KT_PAD,14)	/* key-pad enter		   */
#define K_PCOMMA	K(KT_PAD,15)	/* key-pad comma: kludge...	   */
#define K_PDOT		K(KT_PAD,16)	/* key-pad dot (period): kludge... */

#define K_DGRAVE	K(KT_DEAD,0)
#define K_DACUTE	K(KT_DEAD,1)
#define K_DCIRCM	K(KT_DEAD,2)
#define K_DTILDE	K(KT_DEAD,3)
#define K_DDIERE	K(KT_DEAD,4)

#define K_DOWN		K(KT_CUR,0)
#define K_LEFT		K(KT_CUR,1)
#define K_RIGHT		K(KT_CUR,2)
#define K_UP		K(KT_CUR,3)

#define K_LSHIFT	K(KT_SHIFT,KG_LSHIFT)
#define K_RSHIFT	K(KT_SHIFT,KG_RSHIFT)
#define K_LCTRL		K(KT_SHIFT,KG_LCTRL)
#define K_RCTRL		K(KT_SHIFT,KG_RCTRL)
#define K_LALT		K(KT_SHIFT,KG_LALT)
#define K_RALT		K(KT_SHIFT,KG_RALT)
#define K_LALTGR	K(KT_SHIFT,KG_LALTGR)
#define K_RALTGR	K(KT_SHIFT,KG_RALTGR)

#define K_ALT		K_LALT
#define K_ALTGR		K_RALTGR

#endif