xref: /openbmc/linux/include/linux/kbd_kern.h (revision a18a9da8)
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 
vc_kbd_mode(struct kbd_struct * kbd,int flag)72 static inline int vc_kbd_mode(struct kbd_struct * kbd, int flag)
73 {
74 	return ((kbd->modeflags >> flag) & 1);
75 }
76 
vc_kbd_led(struct kbd_struct * kbd,int flag)77 static inline int vc_kbd_led(struct kbd_struct * kbd, int flag)
78 {
79 	return ((kbd->ledflagstate >> flag) & 1);
80 }
81 
set_vc_kbd_mode(struct kbd_struct * kbd,int flag)82 static inline void set_vc_kbd_mode(struct kbd_struct * kbd, int flag)
83 {
84 	kbd->modeflags |= 1 << flag;
85 }
86 
set_vc_kbd_led(struct kbd_struct * kbd,int flag)87 static inline void set_vc_kbd_led(struct kbd_struct * kbd, int flag)
88 {
89 	kbd->ledflagstate |= 1 << flag;
90 }
91 
clr_vc_kbd_mode(struct kbd_struct * kbd,int flag)92 static inline void clr_vc_kbd_mode(struct kbd_struct * kbd, int flag)
93 {
94 	kbd->modeflags &= ~(1 << flag);
95 }
96 
clr_vc_kbd_led(struct kbd_struct * kbd,int flag)97 static inline void clr_vc_kbd_led(struct kbd_struct * kbd, int flag)
98 {
99 	kbd->ledflagstate &= ~(1 << flag);
100 }
101 
chg_vc_kbd_lock(struct kbd_struct * kbd,int flag)102 static inline void chg_vc_kbd_lock(struct kbd_struct * kbd, int flag)
103 {
104 	kbd->lockstate ^= 1 << flag;
105 }
106 
chg_vc_kbd_slock(struct kbd_struct * kbd,int flag)107 static inline void chg_vc_kbd_slock(struct kbd_struct * kbd, int flag)
108 {
109 	kbd->slockstate ^= 1 << flag;
110 }
111 
chg_vc_kbd_mode(struct kbd_struct * kbd,int flag)112 static inline void chg_vc_kbd_mode(struct kbd_struct * kbd, int flag)
113 {
114 	kbd->modeflags ^= 1 << flag;
115 }
116 
chg_vc_kbd_led(struct kbd_struct * kbd,int flag)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