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 # $FreeBSD$
27 #
28
29 #include <sys/bus.h>
30 #include <dev/iicbus/iic.h>
31
32 INTERFACE iicbus;
33
34 #
35 # Interpret interrupt
36 #
37 METHOD int intr {
38 device_t dev;
39 int event;
40 char *buf;
41 };
42
43 #
44 # iicbus callback
45 #
46 METHOD int callback {
47 device_t dev;
48 int index;
49 caddr_t data;
50 };
51
52 #
53 # Send REPEATED_START condition
54 #
55 METHOD int repeated_start {
56 device_t dev;
57 u_char slave;
58 int timeout;
59 };
60
61 #
62 # Send START condition
63 #
64 METHOD int start {
65 device_t dev;
66 u_char slave;
67 int timeout;
68 };
69
70 #
71 # Send STOP condition
72 #
73 METHOD int stop {
74 device_t dev;
75 };
76
77 #
78 # Read from I2C bus
79 #
80 METHOD 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 #
92 METHOD int write {
93 device_t dev;
94 const char *buf;
95 int len;
96 int *bytes;
97 int timeout;
98 };
99
100 #
101 # Reset I2C bus
102 #
103 METHOD int reset {
104 device_t dev;
105 u_char speed;
106 u_char addr;
107 u_char *oldaddr;
108 };
109
110 #
111 # Generalized Read/Write interface
112 #
113 METHOD int transfer {
114 device_t dev;
115 struct iic_msg *msgs;
116 uint32_t nmsgs;
117 };
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