xref: /freebsd/sys/dev/iicbus/iicbb_if.m (revision 2be1a816) 
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
31INTERFACE iicbb;
32
33#
34# iicbus callback
35#
36METHOD int callback {
37	device_t dev;
38	int index;
39	caddr_t data;
40};
41
42#
43# Set I2C bus data line
44#
45METHOD void setsda {
46	device_t dev;
47	int val;
48};
49
50#
51# Set I2C bus clock line
52#
53METHOD void setscl {
54	device_t dev;
55	int val;
56};
57
58#
59# Get I2C bus data line
60#
61#
62METHOD int getsda {
63	device_t dev;
64};
65
66#
67# Get I2C bus clock line
68#
69#
70METHOD int getscl {
71	device_t dev;
72};
73
74#
75# Reset interface
76#
77METHOD int reset {
78	device_t dev;
79	u_char speed;
80	u_char addr;
81	u_char *oldaddr;
82};
83