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: releng/5.0/sys/dev/iicbus/iicbus_if.m 59093 2000-04-08 14:17:18Z dfr $
27 #
28
29 #include <sys/bus.h>
30
31 INTERFACE iicbus;
32
33 #
34 # Interpret interrupt
35 #
36 METHOD int intr {
37 device_t dev;
38 int event;
39 char *buf;
40 };
41
42 #
43 # iicbus callback
44 #
45 METHOD int callback {
46 device_t dev;
47 int index;
48 caddr_t data;
49 };
50
51 #
52 # Send REPEATED_START condition
53 #
54 METHOD int repeated_start {
55 device_t dev;
56 u_char slave;
57 int timeout;
58 };
59
60 #
61 # Send START condition
62 #
63 METHOD int start {
64 device_t dev;
65 u_char slave;
66 int timeout;
67 };
68
69 #
70 # Send STOP condition
71 #
72 METHOD int stop {
73 device_t dev;
74 };
75
76 #
77 # Read from I2C bus
78 #
79 METHOD int read {
80 device_t dev;
81 char *buf;
82 int len;
83 int *bytes;
84 int last;
85 int delay;
86 };
87
88 #
89 # Write to the I2C bus
90 #
91 METHOD int write {
92 device_t dev;
93 char *buf;
94 int len;
95 int *bytes;
96 int timeout;
97 };
98
99 #
100 # Reset I2C bus
101 #
102 METHOD int reset {
103 device_t dev;
104 u_char speed;
105 u_char addr;
106 u_char *oldaddr;
107 };
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