xref: /openbmc/u-boot/include/i8042.h (revision 6b7c0f5e)
1 /*
2  * (C) Copyright 2002 ELTEC Elektronik AG
3  * Frank Gottschling <fgottschling@eltec.de>
4  *
5  * See file CREDITS for list of people who contributed to this
6  * project.
7  *
8  * This program is free software; you can redistribute it and/or
9  * modify it under the terms of the GNU General Public License as
10  * published by the Free Software Foundation; either version 2 of
11  * the License, or (at your option) any later version.
12  *
13  * This program is distributed in the hope that it will be useful,
14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
16  * GNU General Public License for more details.
17  *
18  * You should have received a copy of the GNU General Public License
19  * along with this program; if not, write to the Free Software
20  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
21  * MA 02111-1307 USA
22  */
23 
24 /* i8042.h - Intel 8042 keyboard driver header */
25 
26 #ifndef _I8042_H_
27 #define _I8042_H_
28 
29 #ifdef __I386__
30 #include <common.h>
31 #include <asm/io.h>
32 #define in8(p) inb(p)
33 #define out8(p,v) outb(v,p)
34 #endif
35 
36 /* defines */
37 
38 #define I8042_DATA_REG      (CONFIG_SYS_ISA_IO + 0x0060)    /* keyboard i/o buffer */
39 #define I8042_STATUS_REG    (CONFIG_SYS_ISA_IO + 0x0064)    /* keyboard status read */
40 #define I8042_COMMAND_REG   (CONFIG_SYS_ISA_IO + 0x0064)    /* keyboard ctrl write */
41 
42 #define KBD_US              0        /* default US layout */
43 #define KBD_GER             1        /* german layout */
44 
45 #define KBD_TIMEOUT         1000     /* 1 sec */
46 #define KBD_RESET_TRIES     3
47 
48 #define AS                  0        /* normal character index */
49 #define SH                  1        /* shift index */
50 #define CN                  2        /* control index */
51 #define NM                  3        /* numeric lock index */
52 #define AK                  4        /* right alt key */
53 #define CP                  5        /* capslock index */
54 #define ST                  6        /* stop output index */
55 #define EX                  7        /* extended code index */
56 #define ES                  8        /* escape and extended code index */
57 
58 #define NORMAL              0x0000    /* normal key */
59 #define STP                 0x0001    /* scroll lock stop output*/
60 #define NUM                 0x0002    /* numeric lock */
61 #define CAPS                0x0004    /* capslock */
62 #define SHIFT               0x0008    /* shift */
63 #define CTRL                0x0010    /* control*/
64 #define EXT                 0x0020    /* extended scan code 0xe0 */
65 #define ESC                 0x0040    /* escape key press */
66 #define E1                  0x0080    /* extended scan code 0xe1 */
67 #define BRK                 0x0100    /* make break flag for keyboard */
68 #define ALT                 0x0200    /* right alt */
69 
70 /* exports */
71 
72 int i8042_kbd_init(void);
73 int i8042_tstc(void);
74 int i8042_getc(void);
75 
76 #endif /* _I8042_H_ */
77