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