sys/bus/iicbus/iicbus.h

   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.h,v 1.8 2008/08/04 21:03:06 jhb Exp $
  27  * $DragonFly: src/sys/bus/iicbus/iicbus.h,v 1.3 2006/09/30 20:03:44 swildner Exp $
  28  *
  29  */
  30 #ifndef __IICBUS_H
  31 #define __IICBUS_H
  32
  33 #define IICBUS_IVAR(d) (struct iicbus_ivar *) device_get_ivars(d)
  34 #define IICBUS_SOFTC(d) (struct iicbus_softc *) device_get_softc(d)
  35
  36 struct iicbus_softc
  37 {
  38         device_t dev;           /* Myself */
  39         device_t owner;         /* iicbus owner device structure */
  40         u_char started;         /* address of the 'started' slave
  41                                  * 0 if no start condition succeeded */
  42 };
  43
  44 struct iicbus_ivar
  45 {
  46         uint32_t        addr;
  47 };
  48
  49 enum {
  50         IICBUS_IVAR_ADDR                /* Address or base address */
  51 };
  52
  53 #define IICBUS_ACCESSOR(A, B, T)                                        \
  54         __BUS_ACCESSOR(iicbus, A, IICBUS, B, T)
  55
  56 IICBUS_ACCESSOR(addr,           ADDR,           uint32_t)
  57
  58 #define IICBUS_LOCK(sc)
  59 #define IICBUS_UNLOCK(sc)
  60 #define IICBUS_ASSERT_LOCKED(sc)
  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