LXR linux/include/linux/kbd

   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
 137