1/* SPDX-License-Identifier: GPL-2.0+ */ 2/* 3 * (C) Copyright 2002 ELTEC Elektronik AG 4 * Frank Gottschling <fgottschling@eltec.de> 5 */ 6 7/* i8042.h - Intel 8042 keyboard driver header */ 8 9#ifndef _I8042_H_ 10#define _I8042_H_ 11 12/* defines */ 13 14#define I8042_DATA_REG 0x60 /* keyboard i/o buffer */ 15#define I8042_STS_REG 0x64 /* keyboard status read */ 16#define I8042_CMD_REG 0x64 /* keyboard ctrl write */ 17 18/* Status register bit defines */ 19#define STATUS_OBF (1 << 0) 20#define STATUS_IBF (1 << 1) 21 22/* Configuration byte bit defines */ 23#define CFG_KIRQ_EN (1 << 0) 24#define CFG_MIRQ_EN (1 << 1) 25#define CFG_SET_BIST (1 << 2) 26#define CFG_KCLK_DIS (1 << 4) 27#define CFG_MCLK_DIS (1 << 5) 28#define CFG_AT_TRANS (1 << 6) 29 30/* i8042 commands */ 31#define CMD_RD_CONFIG 0x20 /* read configuration byte */ 32#define CMD_WR_CONFIG 0x60 /* write configuration byte */ 33#define CMD_SELF_TEST 0xaa /* controller self-test */ 34#define CMD_KBD_DIS 0xad /* keyboard disable */ 35#define CMD_KBD_EN 0xae /* keyboard enable */ 36#define CMD_SET_KBD_LED 0xed /* set keyboard led */ 37#define CMD_DRAIN_OUTPUT 0xf4 /* drain output buffer */ 38#define CMD_RESET_KBD 0xff /* reset keyboard */ 39 40/* i8042 command result */ 41#define KBC_TEST_OK 0x55 42#define KBD_ACK 0xfa 43#define KBD_POR 0xaa 44 45/* keyboard scan codes */ 46 47#define KBD_US 0 /* default US layout */ 48#define KBD_GER 1 /* german layout */ 49 50#define KBD_TIMEOUT 1000 /* 1 sec */ 51#define KBD_RESET_TRIES 3 52 53#define AS 0 /* normal character index */ 54#define SH 1 /* shift index */ 55#define CN 2 /* control index */ 56#define NM 3 /* numeric lock index */ 57#define AK 4 /* right alt key */ 58#define CP 5 /* capslock index */ 59#define ST 6 /* stop output index */ 60#define EX 7 /* extended code index */ 61#define ES 8 /* escape and extended code index */ 62 63#define NORMAL 0x0000 /* normal key */ 64#define STP 0x0001 /* scroll lock stop output*/ 65#define NUM 0x0002 /* numeric lock */ 66#define CAPS 0x0004 /* capslock */ 67#define SHIFT 0x0008 /* shift */ 68#define CTRL 0x0010 /* control*/ 69#define EXT 0x0020 /* extended scan code 0xe0 */ 70#define ESC 0x0040 /* escape key press */ 71#define E1 0x0080 /* extended scan code 0xe1 */ 72#define BRK 0x0100 /* make break flag for keyboard */ 73#define ALT 0x0200 /* right alt */ 74 75#endif /* _I8042_H_ */ 76