[J-u-boot.git] / include / i8042.h

/*
 * (C) Copyright 2002 ELTEC Elektronik AG
 * Frank Gottschling <fgottschling@eltec.de>
 *
 * SPDX-License-Identifier:	GPL-2.0+
 */

/* i8042.h - Intel 8042 keyboard driver header */

#ifndef _I8042_H_
#define _I8042_H_

#ifdef __I386__
#include <common.h>
#include <asm/io.h>
#define in8(p) inb(p)
#define out8(p,v) outb(v,p)
#endif

/* defines */

#define I8042_DATA_REG      (CONFIG_SYS_ISA_IO + 0x0060)    /* keyboard i/o buffer */
#define I8042_STATUS_REG    (CONFIG_SYS_ISA_IO + 0x0064)    /* keyboard status read */
#define I8042_COMMAND_REG   (CONFIG_SYS_ISA_IO + 0x0064)    /* keyboard ctrl write */

enum {
	/* Output register (I8042_DATA_REG) has data for system */
	I8042_STATUS_OUT_DATA	= 1 << 0,
	I8042_STATUS_IN_DATA	= 1 << 1,
};

#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 */

/* exports */

/**
 * Flush all buffer from keyboard controller to host.
 */
void i8042_flush(void);

/**
 * Disables the keyboard so that key strokes no longer generate scancodes to
 * the host.
 *
 * @return 0 if ok, -1 if keyboard input was found while disabling
 */
int i8042_disable(void);

struct stdio_dev;

int i8042_kbd_init(void);
int i8042_tstc(struct stdio_dev *dev);
int i8042_getc(struct stdio_dev *dev);

#endif /* _I8042_H_ */
Commit	Line	Data
1df49e27 WD	1	/*
	2	* (C) Copyright 2002 ELTEC Elektronik AG
	3	* Frank Gottschling <fgottschling@eltec.de>
	4	*
1a459660	5	* SPDX-License-Identifier: GPL-2.0+
1df49e27 WD	6	*/
	7
	8	/* i8042.h - Intel 8042 keyboard driver header */
	9
	10	#ifndef _I8042_H_
	11	#define _I8042_H_
	12
7a8e9bed WD	13	#ifdef __I386__
	14	#include <common.h>
	15	#include <asm/io.h>
	16	#define in8(p) inb(p)
	17	#define out8(p,v) outb(v,p)
	18	#endif
	19
1df49e27 WD	20	/* defines */
1df49e27 WD	21
6d0f6bcf JCPV	22	#define I8042_DATA_REG (CONFIG_SYS_ISA_IO + 0x0060) /* keyboard i/o buffer */
	23	#define I8042_STATUS_REG (CONFIG_SYS_ISA_IO + 0x0064) /* keyboard status read */
	24	#define I8042_COMMAND_REG (CONFIG_SYS_ISA_IO + 0x0064) /* keyboard ctrl write */
1df49e27	25
ef94f7fa GB	26	enum {
	27	/* Output register (I8042_DATA_REG) has data for system */
	28	I8042_STATUS_OUT_DATA = 1 << 0,
	29	I8042_STATUS_IN_DATA = 1 << 1,
	30	};
	31
1df49e27 WD	32	#define KBD_US 0 /* default US layout */
	33	#define KBD_GER 1 /* german layout */
	34
	35	#define KBD_TIMEOUT 1000 /* 1 sec */
	36	#define KBD_RESET_TRIES 3
	37
	38	#define AS 0 /* normal character index */
	39	#define SH 1 /* shift index */
	40	#define CN 2 /* control index */
	41	#define NM 3 /* numeric lock index */
	42	#define AK 4 /* right alt key */
	43	#define CP 5 /* capslock index */
	44	#define ST 6 /* stop output index */
	45	#define EX 7 /* extended code index */
	46	#define ES 8 /* escape and extended code index */
	47
	48	#define NORMAL 0x0000 /* normal key */
	49	#define STP 0x0001 /* scroll lock stop output*/
	50	#define NUM 0x0002 /* numeric lock */
	51	#define CAPS 0x0004 /* capslock */
	52	#define SHIFT 0x0008 /* shift */
	53	#define CTRL 0x0010 /* control*/
	54	#define EXT 0x0020 /* extended scan code 0xe0 */
	55	#define ESC 0x0040 /* escape key press */
	56	#define E1 0x0080 /* extended scan code 0xe1 */
	57	#define BRK 0x0100 /* make break flag for keyboard */
	58	#define ALT 0x0200 /* right alt */
	59
	60	/* exports */
	61
45fe668f LYCL	62	/**
	63	* Flush all buffer from keyboard controller to host.
	64	*/
	65	void i8042_flush(void);
	66
	67	/**
	68	* Disables the keyboard so that key strokes no longer generate scancodes to
	69	* the host.
	70	*
	71	* @return 0 if ok, -1 if keyboard input was found while disabling
	72	*/
	73	int i8042_disable(void);
	74
709ea543 SG	75	struct stdio_dev;
709ea543 SG	76
1df49e27	77	int i8042_kbd_init(void);
709ea543 SG	78	int i8042_tstc(struct stdio_dev *dev);
709ea543 SG	79	int i8042_getc(struct stdio_dev *dev);
1df49e27 WD	80
1df49e27 WD	81	#endif /* _I8042_H_ */