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 */ 78 static inline void set_leds(void) 79 { 80 tasklet_schedule(&keyboard_tasklet); 81 } 82 83 static inline int vc_kbd_mode(struct kbd_struct * kbd, int flag) 84 { 85 return ((kbd->modeflags >> flag) & 1); 86 } 87 88 static inline int vc_kbd_led(struct kbd_struct * kbd, int flag) 89 { 90 return ((kbd->ledflagstate >> flag) & 1); 91 } 92 93 static inline void set_vc_kbd_mode(struct kbd_struct * kbd, int flag) 94 { 95 kbd->modeflags |= 1 << flag; 96 } 97 98 static inline void set_vc_kbd_led(struct kbd_struct * kbd, int flag) 99 { 100 kbd->ledflagstate |= 1 << flag; 101 } 102 103 static inline void clr_vc_kbd_mode(struct kbd_struct * kbd, int flag) 104 { 105 kbd->modeflags &= ~(1 << flag); 106 } 107 108 static inline void clr_vc_kbd_led(struct kbd_struct * kbd, int flag) 109 { 110 kbd->ledflagstate &= ~(1 << flag); 111 } 112 113 static inline void chg_vc_kbd_lock(struct kbd_struct * kbd, int flag) 114 { 115 kbd->lockstate ^= 1 << flag; 116 } 117 118 static inline void chg_vc_kbd_slock(struct kbd_struct * kbd, int flag) 119 { 120 kbd->slockstate ^= 1 << flag; 121 } 122 123 static inline void chg_vc_kbd_mode(struct kbd_struct * kbd, int flag) 124 { 125 kbd->modeflags ^= 1 << flag; 126 } 127 128 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