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 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 const 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}; 109 110# 111# Generalized Read/Write interface 112# 113METHOD int transfer { 114 device_t dev; 115 struct iic_msg *msgs; 116 uint32_t nmsgs; 117}; 118