1/*
2 * This file is subject to the terms and conditions of the GNU General Public
3 * License.  See the file "COPYING" in the main directory of this archive
4 * for more details.
5 *
6 * Copyright (C) 1994 - 1999 Ralf Baechle
7 */
8#ifndef _ASM_KEYBOARD_H
9#define _ASM_KEYBOARD_H
10
11#ifdef __KERNEL__
12
13#include <linux/config.h>
14#include <linux/delay.h>
15#include <linux/ioport.h>
16#include <linux/kd.h>
17#include <linux/pm.h>
18
19#define DISABLE_KBD_DURING_INTERRUPTS 0
20
21#ifdef CONFIG_PC_KEYB
22
23extern int pckbd_setkeycode(unsigned int scancode, unsigned int keycode);
24extern int pckbd_getkeycode(unsigned int scancode);
25extern int pckbd_translate(unsigned char scancode, unsigned char *keycode,
26			   char raw_mode);
27extern char pckbd_unexpected_up(unsigned char keycode);
28extern void pckbd_leds(unsigned char leds);
29extern void pckbd_init_hw(void);
30extern int pckbd_pm_resume(struct pm_dev *, pm_request_t, void *);
31extern pm_callback pm_kbd_request_override;
32extern unsigned char pckbd_sysrq_xlate[128];
33extern void kbd_forward_char (int ch);
34
35#define kbd_setkeycode		pckbd_setkeycode
36#define kbd_getkeycode		pckbd_getkeycode
37#define kbd_translate		pckbd_translate
38#define kbd_unexpected_up	pckbd_unexpected_up
39#define kbd_leds		pckbd_leds
40#define kbd_init_hw		pckbd_init_hw
41#define kbd_sysrq_xlate         pckbd_sysrq_xlate
42
43#define SYSRQ_KEY 0x54
44
45/* Some stoneage hardware needs delays after some operations.  */
46#define kbd_pause() do { } while(0)
47
48struct kbd_ops {
49	/* Keyboard driver resource allocation  */
50	void (*kbd_request_region)(void);
51	int (*kbd_request_irq)(void (*handler)(int, void *, struct pt_regs *));
52
53	/* PSaux driver resource management  */
54	int (*aux_request_irq)(void (*handler)(int, void *, struct pt_regs *));
55	void (*aux_free_irq)(void);
56
57	/* Methods to access the keyboard processor's I/O registers  */
58	unsigned char (*kbd_read_input)(void);
59	void (*kbd_write_output)(unsigned char val);
60	void (*kbd_write_command)(unsigned char val);
61	unsigned char (*kbd_read_status)(void);
62};
63
64extern struct kbd_ops *kbd_ops;
65
66/* Do the actual calls via kbd_ops vector  */
67#define kbd_request_region() kbd_ops->kbd_request_region()
68#define kbd_request_irq(handler) kbd_ops->kbd_request_irq(handler)
69
70#define aux_request_irq(hand, dev_id) kbd_ops->aux_request_irq(hand)
71#define aux_free_irq(dev_id) kbd_ops->aux_free_irq()
72
73#define kbd_read_input() kbd_ops->kbd_read_input()
74#define kbd_write_output(val) kbd_ops->kbd_write_output(val)
75#define kbd_write_command(val) kbd_ops->kbd_write_command(val)
76#define kbd_read_status() kbd_ops->kbd_read_status()
77
78#else
79
80extern int kbd_setkeycode(unsigned int scancode, unsigned int keycode);
81extern int kbd_getkeycode(unsigned int scancode);
82extern int kbd_translate(unsigned char scancode, unsigned char *keycode,
83	char raw_mode);
84extern char kbd_unexpected_up(unsigned char keycode);
85extern void kbd_leds(unsigned char leds);
86extern void kbd_init_hw(void);
87extern unsigned char *kbd_sysrq_xlate;
88
89extern unsigned char kbd_sysrq_key;
90#define SYSRQ_KEY kbd_sysrq_key
91
92#endif
93
94#endif /* __KERNEL */
95
96#endif /* _ASM_KEYBOARD_H */
97