| /* SPDX-License-Identifier: GPL-2.0+ */ |
| /* |
| * (C) Copyright 2002 ELTEC Elektronik AG |
| * Frank Gottschling <fgottschling@eltec.de> |
| */ |
| |
| /* i8042.h - Intel 8042 keyboard driver header */ |
| |
| #ifndef _I8042_H_ |
| #define _I8042_H_ |
| |
| /* defines */ |
| |
| #define I8042_DATA_REG 0x60 /* keyboard i/o buffer */ |
| #define I8042_STS_REG 0x64 /* keyboard status read */ |
| #define I8042_CMD_REG 0x64 /* keyboard ctrl write */ |
| |
| /* Status register bit defines */ |
| #define STATUS_OBF (1 << 0) |
| #define STATUS_IBF (1 << 1) |
| |
| /* Configuration byte bit defines */ |
| #define CONFIG_KIRQ_EN (1 << 0) |
| #define CONFIG_MIRQ_EN (1 << 1) |
| #define CONFIG_SET_BIST (1 << 2) |
| #define CONFIG_KCLK_DIS (1 << 4) |
| #define CONFIG_MCLK_DIS (1 << 5) |
| #define CONFIG_AT_TRANS (1 << 6) |
| |
| /* i8042 commands */ |
| #define CMD_RD_CONFIG 0x20 /* read configuration byte */ |
| #define CMD_WR_CONFIG 0x60 /* write configuration byte */ |
| #define CMD_SELF_TEST 0xaa /* controller self-test */ |
| #define CMD_KBD_DIS 0xad /* keyboard disable */ |
| #define CMD_KBD_EN 0xae /* keyboard enable */ |
| #define CMD_SET_KBD_LED 0xed /* set keyboard led */ |
| #define CMD_DRAIN_OUTPUT 0xf4 /* drain output buffer */ |
| #define CMD_RESET_KBD 0xff /* reset keyboard */ |
| |
| /* i8042 command result */ |
| #define KBC_TEST_OK 0x55 |
| #define KBD_ACK 0xfa |
| #define KBD_POR 0xaa |
| |
| /* keyboard scan codes */ |
| |
| #define KBD_US 0 /* default US layout */ |
| #define KBD_GER 1 /* german layout */ |
| |
| #define KBD_TIMEOUT 1000 /* 1 sec */ |
| #define KBD_RESET_TRIES 3 |
| |
| #define AS 0 /* normal character index */ |
| #define SH 1 /* shift index */ |
| #define CN 2 /* control index */ |
| #define NM 3 /* numeric lock index */ |
| #define AK 4 /* right alt key */ |
| #define CP 5 /* capslock index */ |
| #define ST 6 /* stop output index */ |
| #define EX 7 /* extended code index */ |
| #define ES 8 /* escape and extended code index */ |
| |
| #define NORMAL 0x0000 /* normal key */ |
| #define STP 0x0001 /* scroll lock stop output*/ |
| #define NUM 0x0002 /* numeric lock */ |
| #define CAPS 0x0004 /* capslock */ |
| #define SHIFT 0x0008 /* shift */ |
| #define CTRL 0x0010 /* control*/ |
| #define EXT 0x0020 /* extended scan code 0xe0 */ |
| #define ESC 0x0040 /* escape key press */ |
| #define E1 0x0080 /* extended scan code 0xe1 */ |
| #define BRK 0x0100 /* make break flag for keyboard */ |
| #define ALT 0x0200 /* right alt */ |
| |
| #endif /* _I8042_H_ */ |
