Additional note to last commit. GCC-3.4 improperly generates a warning
[dragonfly.git] / sys / bus / iicbus / iicbus_if.m
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1#
2# Copyright (c) 1998 Nicolas Souchu
3# All rights reserved.
4#
5# Redistribution and use in source and binary forms, with or without
6# modification, are permitted provided that the following conditions
7# are met:
8# 1. Redistributions of source code must retain the above copyright
9# notice, this list of conditions and the following disclaimer.
10# 2. Redistributions in binary form must reproduce the above copyright
11# notice, this list of conditions and the following disclaimer in the
12# documentation and/or other materials provided with the distribution.
13#
14# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24# SUCH DAMAGE.
25#
26# $FreeBSD: src/sys/dev/iicbus/iicbus_if.m,v 1.4 1999/08/28 00:41:59 peter Exp $
80eff43d 27# $DragonFly: src/sys/bus/iicbus/iicbus_if.m,v 1.3 2003/11/17 00:54:39 asmodai Exp $
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28#
29
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30#include <sys/bus.h>
31
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32INTERFACE iicbus;
33
34#
35# Interpret interrupt
36#
37METHOD int intr {
38 device_t dev;
39 int event;
40 char *buf;
41};
42
43#
44# iicbus callback
45#
46METHOD int callback {
47 device_t dev;
48 int index;
49 caddr_t data;
50};
51
52#
53# Send REPEATED_START condition
54#
55METHOD int repeated_start {
56 device_t dev;
57 u_char slave;
58 int timeout;
59};
60
61#
62# Send START condition
63#
64METHOD int start {
65 device_t dev;
66 u_char slave;
67 int timeout;
68};
69
70#
71# Send STOP condition
72#
73METHOD int stop {
74 device_t dev;
75};
76
77#
78# Read from I2C bus
79#
80METHOD int read {
81 device_t dev;
82 char *buf;
83 int len;
84 int *bytes;
85 int last;
86 int delay;
87};
88
89#
90# Write to the I2C bus
91#
92METHOD int write {
93 device_t dev;
94 char *buf;
95 int len;
96 int *bytes;
97 int timeout;
98};
99
100#
101# Reset I2C bus
102#
103METHOD int reset {
104 device_t dev;
105 u_char speed;
106 u_char addr;
107 u_char *oldaddr;
108};