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 struct tasklet_struct keyboard_tasklet;
10
11 extern char *func_table[MAX_NR_FUNC];
12 extern char func_buf[];
13 extern char *funcbufptr;
14 extern 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 */
25 struct 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
66 extern int kbd_init(void);
67
68 extern void setledstate(struct kbd_struct *kbd, unsigned int led);
69
70 extern int do_poke_blanked_console;
71
72 extern void (*kbd_ledfunc)(unsigned int led);
73
74 extern int set_console(int nr);
75 extern void schedule_console_callback(void);
76
77 /* FIXME: review locking for vt.c callers */
set_leds(void)78 static inline void set_leds(void)
79 {
80 tasklet_schedule(&keyboard_tasklet);
81 }
82
vc_kbd_mode(struct kbd_struct * kbd,int flag)83 static inline int vc_kbd_mode(struct kbd_struct * kbd, int flag)
84 {
85 return ((kbd->modeflags >> flag) & 1);
86 }
87
vc_kbd_led(struct kbd_struct * kbd,int flag)88 static inline int vc_kbd_led(struct kbd_struct * kbd, int flag)
89 {
90 return ((kbd->ledflagstate >> flag) & 1);
91 }
92
set_vc_kbd_mode(struct kbd_struct * kbd,int flag)93 static inline void set_vc_kbd_mode(struct kbd_struct * kbd, int flag)
94 {
95 kbd->modeflags |= 1 << flag;
96 }
97
set_vc_kbd_led(struct kbd_struct * kbd,int flag)98 static inline void set_vc_kbd_led(struct kbd_struct * kbd, int flag)
99 {
100 kbd->ledflagstate |= 1 << flag;
101 }
102
clr_vc_kbd_mode(struct kbd_struct * kbd,int flag)103 static inline void clr_vc_kbd_mode(struct kbd_struct * kbd, int flag)
104 {
105 kbd->modeflags &= ~(1 << flag);
106 }
107
clr_vc_kbd_led(struct kbd_struct * kbd,int flag)108 static inline void clr_vc_kbd_led(struct kbd_struct * kbd, int flag)
109 {
110 kbd->ledflagstate &= ~(1 << flag);
111 }
112
chg_vc_kbd_lock(struct kbd_struct * kbd,int flag)113 static inline void chg_vc_kbd_lock(struct kbd_struct * kbd, int flag)
114 {
115 kbd->lockstate ^= 1 << flag;
116 }
117
chg_vc_kbd_slock(struct kbd_struct * kbd,int flag)118 static inline void chg_vc_kbd_slock(struct kbd_struct * kbd, int flag)
119 {
120 kbd->slockstate ^= 1 << flag;
121 }
122
chg_vc_kbd_mode(struct kbd_struct * kbd,int flag)123 static inline void chg_vc_kbd_mode(struct kbd_struct * kbd, int flag)
124 {
125 kbd->modeflags ^= 1 << flag;
126 }
127
chg_vc_kbd_led(struct kbd_struct * kbd,int flag)128 static 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
139 struct console;
140
141 void compute_shiftstate(void);
142
143 /* defkeymap.c */
144
145 extern unsigned int keymap_count;
146
147 #endif
148