lcdkp_subr.h revision 1.1 1 /* $NetBSD: lcdkp_subr.h,v 1.1 2003/01/20 01:26:12 soren Exp $ */
2
3 /*
4 * Copyright (c) 2002 Dennis I. Chernoivanov
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * 3. The name of the author may not be used to endorse or promote products
16 * derived from this software without specific prior written permission
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
19 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
20 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
21 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
23 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
24 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
25 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
27 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 */
29
30 #ifndef _DEV_IC_LCDKP_SUBR_H_
31 #define _DEV_IC_LCDKP_SUBR_H_
32
33 #ifdef _KERNEL
34 #include <sys/lock.h>
35
36 /* Key code translation */
37 struct lcdkp_xlate {
38 u_int8_t x_keycode;
39 u_int8_t x_outcode;
40 };
41
42 /* Keypad control structure */
43 struct lcdkp_chip {
44 bus_space_tag_t sc_iot;
45 bus_space_handle_t sc_ioh; /* keypad i/o register */
46
47 #define LCDKP_HAS_BUF 0x1
48 u_char sc_flags;
49 u_int8_t sc_buf; /* pending character */
50
51 u_int8_t sc_knum; /* number of buttons */
52 struct lcdkp_xlate *sc_kpad; /* recognized keycodes */
53
54 u_int8_t (* sc_rread)(bus_space_tag_t, bus_space_handle_t);
55
56 #if defined(MULTIPROCESSOR)
57 struct simplelock sc_lock;
58 #endif
59 };
60
61 #define lcdkp_dr_read(sc) \
62 (sc)->sc_rread((sc)->sc_iot, (sc)->sc_ioh);
63
64 #if defined(MULTIPROCESSOR)
65 #define lcdkp_lock(sc) simple_lock(&(sc)->sc_lock)
66 #define lcdkp_unlock(sc) simple_unlock(&(sc)->sc_lock)
67 #define lcdkp_lockaddr(sc) (&(sc)->sc_lock)
68 #define lcdkp_lock_init(sc) simple_lock_init(&(sc)->sc_lock)
69 #else
70 #define lcdkp_lock(sc) ((void)0)
71 #define lcdkp_unlock(sc) ((void)0)
72 #define lcdkp_lockaddr(sc) (NULL)
73 #define lcdkp_lock_init(sc) ((void)0)
74 #endif
75
76 void lcdkp_attach_subr(struct lcdkp_chip *);
77 int lcdkp_scankey(struct lcdkp_chip *);
78 int lcdkp_readkey(struct lcdkp_chip *, u_int8_t *);
79
80 #endif /* _KERNEL */
81
82 #endif /* _DEV_IC_LCDKP_SUBR_H_ */
83