11df49e27Swdenk /* 21df49e27Swdenk * (C) Copyright 2002 ELTEC Elektronik AG 31df49e27Swdenk * Frank Gottschling <fgottschling@eltec.de> 41df49e27Swdenk * 5*1a459660SWolfgang Denk * SPDX-License-Identifier: GPL-2.0+ 61df49e27Swdenk */ 71df49e27Swdenk 81df49e27Swdenk /* i8042.h - Intel 8042 keyboard driver header */ 91df49e27Swdenk 101df49e27Swdenk #ifndef _I8042_H_ 111df49e27Swdenk #define _I8042_H_ 121df49e27Swdenk 137a8e9bedSwdenk #ifdef __I386__ 147a8e9bedSwdenk #include <common.h> 157a8e9bedSwdenk #include <asm/io.h> 167a8e9bedSwdenk #define in8(p) inb(p) 177a8e9bedSwdenk #define out8(p,v) outb(v,p) 187a8e9bedSwdenk #endif 197a8e9bedSwdenk 201df49e27Swdenk /* defines */ 211df49e27Swdenk 226d0f6bcfSJean-Christophe PLAGNIOL-VILLARD #define I8042_DATA_REG (CONFIG_SYS_ISA_IO + 0x0060) /* keyboard i/o buffer */ 236d0f6bcfSJean-Christophe PLAGNIOL-VILLARD #define I8042_STATUS_REG (CONFIG_SYS_ISA_IO + 0x0064) /* keyboard status read */ 246d0f6bcfSJean-Christophe PLAGNIOL-VILLARD #define I8042_COMMAND_REG (CONFIG_SYS_ISA_IO + 0x0064) /* keyboard ctrl write */ 251df49e27Swdenk 26ef94f7faSGabe Black enum { 27ef94f7faSGabe Black /* Output register (I8042_DATA_REG) has data for system */ 28ef94f7faSGabe Black I8042_STATUS_OUT_DATA = 1 << 0, 29ef94f7faSGabe Black I8042_STATUS_IN_DATA = 1 << 1, 30ef94f7faSGabe Black }; 31ef94f7faSGabe Black 321df49e27Swdenk #define KBD_US 0 /* default US layout */ 331df49e27Swdenk #define KBD_GER 1 /* german layout */ 341df49e27Swdenk 351df49e27Swdenk #define KBD_TIMEOUT 1000 /* 1 sec */ 361df49e27Swdenk #define KBD_RESET_TRIES 3 371df49e27Swdenk 381df49e27Swdenk #define AS 0 /* normal character index */ 391df49e27Swdenk #define SH 1 /* shift index */ 401df49e27Swdenk #define CN 2 /* control index */ 411df49e27Swdenk #define NM 3 /* numeric lock index */ 421df49e27Swdenk #define AK 4 /* right alt key */ 431df49e27Swdenk #define CP 5 /* capslock index */ 441df49e27Swdenk #define ST 6 /* stop output index */ 451df49e27Swdenk #define EX 7 /* extended code index */ 461df49e27Swdenk #define ES 8 /* escape and extended code index */ 471df49e27Swdenk 481df49e27Swdenk #define NORMAL 0x0000 /* normal key */ 491df49e27Swdenk #define STP 0x0001 /* scroll lock stop output*/ 501df49e27Swdenk #define NUM 0x0002 /* numeric lock */ 511df49e27Swdenk #define CAPS 0x0004 /* capslock */ 521df49e27Swdenk #define SHIFT 0x0008 /* shift */ 531df49e27Swdenk #define CTRL 0x0010 /* control*/ 541df49e27Swdenk #define EXT 0x0020 /* extended scan code 0xe0 */ 551df49e27Swdenk #define ESC 0x0040 /* escape key press */ 561df49e27Swdenk #define E1 0x0080 /* extended scan code 0xe1 */ 571df49e27Swdenk #define BRK 0x0100 /* make break flag for keyboard */ 581df49e27Swdenk #define ALT 0x0200 /* right alt */ 591df49e27Swdenk 601df49e27Swdenk /* exports */ 611df49e27Swdenk 6245fe668fSLouis Yung-Chieh Lo /** 6345fe668fSLouis Yung-Chieh Lo * Flush all buffer from keyboard controller to host. 6445fe668fSLouis Yung-Chieh Lo */ 6545fe668fSLouis Yung-Chieh Lo void i8042_flush(void); 6645fe668fSLouis Yung-Chieh Lo 6745fe668fSLouis Yung-Chieh Lo /** 6845fe668fSLouis Yung-Chieh Lo * Disables the keyboard so that key strokes no longer generate scancodes to 6945fe668fSLouis Yung-Chieh Lo * the host. 7045fe668fSLouis Yung-Chieh Lo * 7145fe668fSLouis Yung-Chieh Lo * @return 0 if ok, -1 if keyboard input was found while disabling 7245fe668fSLouis Yung-Chieh Lo */ 7345fe668fSLouis Yung-Chieh Lo int i8042_disable(void); 7445fe668fSLouis Yung-Chieh Lo 751df49e27Swdenk int i8042_kbd_init(void); 761df49e27Swdenk int i8042_tstc(void); 771df49e27Swdenk int i8042_getc(void); 781df49e27Swdenk 791df49e27Swdenk #endif /* _I8042_H_ */ 80