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 1.8 2006/12/05 06:19:36 imp Exp $ 27# $DragonFly: src/sys/bus/iicbus/iicbus_if.m,v 1.3 2003/11/17 00:54:39 asmodai Exp $ 28# 29 30#include <sys/bus.h> 31#include <bus/iicbus/iic.h> 32 33INTERFACE iicbus; 34 35# 36# Interpret interrupt 37# 38METHOD int intr { 39 device_t dev; 40 int event; 41 char *buf; 42}; 43 44# 45# iicbus callback 46# 47METHOD int callback { 48 device_t dev; 49 int index; 50 caddr_t data; 51}; 52 53# 54# Send REPEATED_START condition 55# 56METHOD int repeated_start { 57 device_t dev; 58 u_char slave; 59 int timeout; 60}; 61 62# 63# Send START condition 64# 65METHOD int start { 66 device_t dev; 67 u_char slave; 68 int timeout; 69}; 70 71# 72# Send STOP condition 73# 74METHOD int stop { 75 device_t dev; 76}; 77 78# 79# Read from I2C bus 80# 81METHOD int read { 82 device_t dev; 83 char *buf; 84 int len; 85 int *bytes; 86 int last; 87 int delay; 88}; 89 90# 91# Write to the I2C bus 92# 93METHOD int write { 94 device_t dev; 95 const char *buf; 96 int len; 97 int *bytes; 98 int timeout; 99}; 100 101# 102# Reset I2C bus 103# 104METHOD int reset { 105 device_t dev; 106 u_char speed; 107 u_char addr; 108 u_char *oldaddr; 109}; 110 111# 112# Generalized Read/Write interface 113# 114METHOD int transfer { 115 device_t dev; 116 struct iic_msg *msgs; 117 uint32_t nmsgs; 118}; 119