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/iic.h,v 1.6 2009/01/26 13:53:39 raj Exp $ 27 * $DragonFly: src/sys/platform/pc32/include/iic.h,v 1.4 2006/05/20 02:42:06 dillon Exp $ 28 * 29 */ 30 #ifndef __IIC_H 31 #define __IIC_H 32 33 #include <sys/ioccom.h> 34 35 /* Designed to be compatible with linux's struct i2c_msg */ 36 struct iic_msg 37 { 38 uint16_t slave; 39 uint16_t flags; 40 #define IIC_M_WR 0 /* Fake flag for write */ 41 #define IIC_M_RD 0x0001 /* read vs write */ 42 uint16_t len; /* msg legnth */ 43 uint8_t * buf; 44 }; 45 46 struct iiccmd { 47 u_char slave; 48 size_t count; 49 size_t last; 50 char *buf; 51 }; 52 53 struct iic_rdwr_data { 54 struct iic_msg *msgs; 55 uint32_t nmsgs; 56 }; 57 58 #define I2CSTART _IOW('i', 1, struct iiccmd) /* start condition */ 59 #define I2CSTOP _IO('i', 2) /* stop condition */ 60 #define I2CRSTCARD _IOW('i', 3, struct iiccmd) /* reset the card */ 61 #define I2CWRITE _IOW('i', 4, struct iiccmd) /* send data */ 62 #define I2CREAD _IOW('i', 5, struct iiccmd) /* receive data */ 63 #define I2CRDWR _IOW('i', 6, struct iic_rdwr_data) /* General read/write interface */ 64 #define I2CRPTSTART _IOW('i', 7, struct iiccmd) /* repeated start */ 65 66 #endif 67