kbd_kern.h

  1/* SPDX-License-Identifier: GPL-2.0 */
  2#ifndef _KBD_KERN_H
  3#define _KBD_KERN_H
  4
  5#include <linux/tty.h>
  6#include <linux/interrupt.h>
  7#include <linux/keyboard.h>
  8
  9extern char *func_table[MAX_NR_FUNC];
 10
 11/*
 12 * kbd->xxx contains the VC-local things (flag settings etc..)
 13 *
 14 * Note: externally visible are LED_SCR, LED_NUM, LED_CAP defined in kd.h
 15 *       The code in KDGETLED / KDSETLED depends on the internal and
 16 *       external order being the same.
 17 *
 18 * Note: lockstate is used as index in the array key_map.
 19 */
 20struct kbd_struct {
 21
 22	unsigned char lockstate;
 23/* 8 modifiers - the names do not have any meaning at all;
 24   they can be associated to arbitrarily chosen keys */
 25#define VC_SHIFTLOCK	KG_SHIFT	/* shift lock mode */
 26#define VC_ALTGRLOCK	KG_ALTGR	/* altgr lock mode */
 27#define VC_CTRLLOCK	KG_CTRL 	/* control lock mode */
 28#define VC_ALTLOCK	KG_ALT  	/* alt lock mode */
 29#define VC_SHIFTLLOCK	KG_SHIFTL	/* shiftl lock mode */
 30#define VC_SHIFTRLOCK	KG_SHIFTR	/* shiftr lock mode */
 31#define VC_CTRLLLOCK	KG_CTRLL 	/* ctrll lock mode */
 32#define VC_CTRLRLOCK	KG_CTRLR 	/* ctrlr lock mode */
 33	unsigned char slockstate; 	/* for `sticky' Shift, Ctrl, etc. */
 34
 35	unsigned char ledmode:1;
 36#define LED_SHOW_FLAGS 0        /* traditional state */
 37#define LED_SHOW_IOCTL 1        /* only change leds upon ioctl */
 38
 39	unsigned char ledflagstate:4;	/* flags, not lights */
 40	unsigned char default_ledflagstate:4;
 41#define VC_SCROLLOCK	0	/* scroll-lock mode */
 42#define VC_NUMLOCK	1	/* numeric lock mode */
 43#define VC_CAPSLOCK	2	/* capslock mode */
 44#define VC_KANALOCK	3	/* kanalock mode */
 45
 46	unsigned char kbdmode:3;	/* one 3-bit value */
 47#define VC_XLATE	0	/* translate keycodes using keymap */
 48#define VC_MEDIUMRAW	1	/* medium raw (keycode) mode */
 49#define VC_RAW		2	/* raw (scancode) mode */
 50#define VC_UNICODE	3	/* Unicode mode */
 51#define VC_OFF		4	/* disabled mode */
 52
 53	unsigned char modeflags:5;
 54#define VC_APPLIC	0	/* application key mode */
 55#define VC_CKMODE	1	/* cursor key mode */
 56#define VC_REPEAT	2	/* keyboard repeat */
 57#define VC_CRLF		3	/* 0 - enter sends CR, 1 - enter sends CRLF */
 58#define VC_META		4	/* 0 - meta, 1 - meta=prefix with ESC */
 59};
 60
 61extern int kbd_init(void);
 62
 63extern void setledstate(struct kbd_struct *kbd, unsigned int led);
 64
 65extern int do_poke_blanked_console;
 66
 67extern void (*kbd_ledfunc)(unsigned int led);
 68
 69extern int set_console(int nr);
 70extern void schedule_console_callback(void);
 71
 72static inline int vc_kbd_mode(struct kbd_struct * kbd, int flag)
 73{
 74	return ((kbd->modeflags >> flag) & 1);
 75}
 76
 77static inline int vc_kbd_led(struct kbd_struct * kbd, int flag)
 78{
 79	return ((kbd->ledflagstate >> flag) & 1);
 80}
 81
 82static inline void set_vc_kbd_mode(struct kbd_struct * kbd, int flag)
 83{
 84	kbd->modeflags |= 1 << flag;
 85}
 86
 87static inline void set_vc_kbd_led(struct kbd_struct * kbd, int flag)
 88{
 89	kbd->ledflagstate |= 1 << flag;
 90}
 91
 92static inline void clr_vc_kbd_mode(struct kbd_struct * kbd, int flag)
 93{
 94	kbd->modeflags &= ~(1 << flag);
 95}
 96
 97static inline void clr_vc_kbd_led(struct kbd_struct * kbd, int flag)
 98{
 99	kbd->ledflagstate &= ~(1 << flag);
100}
101
102static inline void chg_vc_kbd_lock(struct kbd_struct * kbd, int flag)
103{
104	kbd->lockstate ^= 1 << flag;
105}
106
107static inline void chg_vc_kbd_slock(struct kbd_struct * kbd, int flag)
108{
109	kbd->slockstate ^= 1 << flag;
110}
111
112static inline void chg_vc_kbd_mode(struct kbd_struct * kbd, int flag)
113{
114	kbd->modeflags ^= 1 << flag;
115}
116
117static inline void chg_vc_kbd_led(struct kbd_struct * kbd, int flag)
118{
119	kbd->ledflagstate ^= 1 << flag;
120}
121
122#define U(x) ((x) ^ 0xf000)
123
124#define BRL_UC_ROW 0x2800
125
126/* keyboard.c */
127
128struct console;
129
130void vt_set_leds_compute_shiftstate(void);
131
132/* defkeymap.c */
133
134extern unsigned int keymap_count;
135
136#endif