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
137
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