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 #ifndef __IICBUS_H 30 #define __IICBUS_H 31 32 #define IICBUS_IVAR(d) (struct iicbus_ivar *) device_get_ivars(d) 33 #define IICBUS_SOFTC(d) (struct iicbus_softc *) device_get_softc(d) 34 35 struct iicbus_softc 36 { 37 device_t dev; /* Myself */ 38 device_t owner; /* iicbus owner device structure */ 39 u_char started; /* address of the 'started' slave 40 * 0 if no start condition succeeded */ 41 }; 42 43 struct iicbus_ivar 44 { 45 uint32_t addr; 46 }; 47 48 enum { 49 IICBUS_IVAR_ADDR /* Address or base address */ 50 }; 51 52 #define IICBUS_ACCESSOR(A, B, T) \ 53 __inline static int \ 54 iicbus_get_ ## A(device_t dev, T *t) \ 55 { \ 56 return BUS_READ_IVAR(device_get_parent(dev), dev, \ 57 IICBUS_IVAR_ ## B, (uintptr_t *) t); \ 58 } 59 60 IICBUS_ACCESSOR(addr, ADDR, uint32_t) 61 62 extern int iicbus_generic_intr(device_t dev, int event, char *buf); 63 64 extern driver_t iicbus_driver; 65 extern devclass_t iicbus_devclass; 66 67 #endif 68