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