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 struct tasklet_struct keyboard_tasklet;
  10
  11extern char *func_table[MAX_NR_FUNC];
  12extern char func_buf[];
  13extern char *funcbufptr;
  14extern int funcbufsize, funcbufleft;
  15
  16/*
  17 * kbd->xxx contains the VC-local things (flag settings etc..)
  18 *
  19 * Note: externally visible are LED_SCR, LED_NUM, LED_CAP defined in kd.h
  20 *       The code in KDGETLED / KDSETLED depends on the internal and
  21 *       external order being the same.
  22 *
  23 * Note: lockstate is used as index in the array key_map.
  24 */
  25struct kbd_struct {
  26
  27        unsigned char lockstate;
  28/* 8 modifiers - the names do not have any meaning at all;
  29   they can be associated to arbitrarily chosen keys */
  30#define VC_SHIFTLOCK    KG_SHIFT        /* shift lock mode */
  31#define VC_ALTGRLOCK    KG_ALTGR        /* altgr lock mode */
  32#define VC_CTRLLOCK     KG_CTRL         /* control lock mode */
  33#define VC_ALTLOCK      KG_ALT          /* alt lock mode */
  34#define VC_SHIFTLLOCK   KG_SHIFTL       /* shiftl lock mode */
  35#define VC_SHIFTRLOCK   KG_SHIFTR       /* shiftr lock mode */
  36#define VC_CTRLLLOCK    KG_CTRLL        /* ctrll lock mode */
  37#define VC_CTRLRLOCK    KG_CTRLR        /* ctrlr lock mode */
  38        unsigned char slockstate;       /* for `sticky' Shift, Ctrl, etc. */
  39
  40        unsigned char ledmode:1;
  41#define LED_SHOW_FLAGS 0        /* traditional state */
  42#define LED_SHOW_IOCTL 1        /* only change leds upon ioctl */
  43
  44        unsigned char ledflagstate:4;   /* flags, not lights */
  45        unsigned char default_ledflagstate:4;
  46#define VC_SCROLLOCK    0       /* scroll-lock mode */
  47#define VC_NUMLOCK      1       /* numeric lock mode */
  48#define VC_CAPSLOCK     2       /* capslock mode */
  49#define VC_KANALOCK     3       /* kanalock mode */
  50
  51        unsigned char kbdmode:3;        /* one 3-bit value */
  52#define VC_XLATE        0       /* translate keycodes using keymap */
  53#define VC_MEDIUMRAW    1       /* medium raw (keycode) mode */
  54#define VC_RAW          2       /* raw (scancode) mode */
  55#define VC_UNICODE      3       /* Unicode mode */
  56#define VC_OFF          4       /* disabled mode */
  57
  58        unsigned char modeflags:5;
  59#define VC_APPLIC       0       /* application key mode */
  60#define VC_CKMODE       1       /* cursor key mode */
  61#define VC_REPEAT       2       /* keyboard repeat */
  62#define VC_CRLF         3       /* 0 - enter sends CR, 1 - enter sends CRLF */
  63#define VC_META         4       /* 0 - meta, 1 - meta=prefix with ESC */
  64};
  65
  66extern int kbd_init(void);
  67
  68extern void setledstate(struct kbd_struct *kbd, unsigned int led);
  69
  70extern int do_poke_blanked_console;
  71
  72extern void (*kbd_ledfunc)(unsigned int led);
  73
  74extern int set_console(int nr);
  75extern void schedule_console_callback(void);
  76
  77/* FIXME: review locking for vt.c callers */
  78static inline void set_leds(void)
  79{
  80        tasklet_schedule(&keyboard_tasklet);
  81}
  82
  83static inline int vc_kbd_mode(struct kbd_struct * kbd, int flag)
  84{
  85        return ((kbd->modeflags >> flag) & 1);
  86}
  87
  88static inline int vc_kbd_led(struct kbd_struct * kbd, int flag)
  89{
  90        return ((kbd->ledflagstate >> flag) & 1);
  91}
  92
  93static inline void set_vc_kbd_mode(struct kbd_struct * kbd, int flag)
  94{
  95        kbd->modeflags |= 1 << flag;
  96}
  97
  98static inline void set_vc_kbd_led(struct kbd_struct * kbd, int flag)
  99{
 100        kbd->ledflagstate |= 1 << flag;
 101}
 102
 103static inline void clr_vc_kbd_mode(struct kbd_struct * kbd, int flag)
 104{
 105        kbd->modeflags &= ~(1 << flag);
 106}
 107
 108static inline void clr_vc_kbd_led(struct kbd_struct * kbd, int flag)
 109{
 110        kbd->ledflagstate &= ~(1 << flag);
 111}
 112
 113static inline void chg_vc_kbd_lock(struct kbd_struct * kbd, int flag)
 114{
 115        kbd->lockstate ^= 1 << flag;
 116}
 117
 118static inline void chg_vc_kbd_slock(struct kbd_struct * kbd, int flag)
 119{
 120        kbd->slockstate ^= 1 << flag;
 121}
 122
 123static inline void chg_vc_kbd_mode(struct kbd_struct * kbd, int flag)
 124{
 125        kbd->modeflags ^= 1 << flag;
 126}
 127
 128static inline void chg_vc_kbd_led(struct kbd_struct * kbd, int flag)
 129{
 130        kbd->ledflagstate ^= 1 << flag;
 131}
 132
 133#define U(x) ((x) ^ 0xf000)
 134
 135#define BRL_UC_ROW 0x2800
 136
 137/* keyboard.c */
 138
 139struct console;
 140
 141void compute_shiftstate(void);
 142
 143/* defkeymap.c */
 144
 145extern unsigned int keymap_count;
 146
 147#endif
 148