include/linux/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
   9 extern 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  */
  20 struct 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
  61 extern int kbd_init(void);
  62
  63 extern void setledstate(struct kbd_struct *kbd, unsigned int led);
  64
  65 extern int do_poke_blanked_console;
  66
  67 extern void (*kbd_ledfunc)(unsigned int led);
  68
  69 extern int set_console(int nr);
  70 extern void schedule_console_callback(void);
  71
  72 static inline int vc_kbd_mode(struct kbd_struct * kbd, int flag)
  73 {
  74         return ((kbd->modeflags >> flag) & 1);
  75 }
  76
  77 static inline int vc_kbd_led(struct kbd_struct * kbd, int flag)
  78 {
  79         return ((kbd->ledflagstate >> flag) & 1);
  80 }
  81
  82 static inline void set_vc_kbd_mode(struct kbd_struct * kbd, int flag)
  83 {
  84         kbd->modeflags |= 1 << flag;
  85 }
  86
  87 static inline void set_vc_kbd_led(struct kbd_struct * kbd, int flag)
  88 {
  89         kbd->ledflagstate |= 1 << flag;
  90 }
  91
  92 static inline void clr_vc_kbd_mode(struct kbd_struct * kbd, int flag)
  93 {
  94         kbd->modeflags &= ~(1 << flag);
  95 }
  96
  97 static inline void clr_vc_kbd_led(struct kbd_struct * kbd, int flag)
  98 {
  99         kbd->ledflagstate &= ~(1 << flag);
 100 }
 101
 102 static inline void chg_vc_kbd_lock(struct kbd_struct * kbd, int flag)
 103 {
 104         kbd->lockstate ^= 1 << flag;
 105 }
 106
 107 static inline void chg_vc_kbd_slock(struct kbd_struct * kbd, int flag)
 108 {
 109         kbd->slockstate ^= 1 << flag;
 110 }
 111
 112 static inline void chg_vc_kbd_mode(struct kbd_struct * kbd, int flag)
 113 {
 114         kbd->modeflags ^= 1 << flag;
 115 }
 116
 117 static 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
 128 struct console;
 129
 130 void vt_set_leds_compute_shiftstate(void);
 131
 132 /* defkeymap.c */
 133
 134 extern unsigned int keymap_count;
 135
 136 #endif