iicbus.h

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    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 #include <sys/_lock.h>
   33 #include <sys/_mutex.h>
   34 
   35 #define IICBUS_IVAR(d) (struct iicbus_ivar *) device_get_ivars(d)
   36 #define IICBUS_SOFTC(d) (struct iicbus_softc *) device_get_softc(d)
   37 
   38 struct iicbus_softc
   39 {
   40         device_t dev;           /* Myself */
   41         device_t owner;         /* iicbus owner device structure */
   42         u_char started;         /* address of the 'started' slave
   43                                  * 0 if no start condition succeeded */
   44         struct mtx lock;
   45 };
   46 
   47 struct iicbus_ivar
   48 {
   49         uint32_t        addr;
   50 };
   51 
   52 enum {
   53         IICBUS_IVAR_ADDR                /* Address or base address */
   54 };
   55 
   56 #define IICBUS_ACCESSOR(A, B, T)                                        \
   57         __BUS_ACCESSOR(iicbus, A, IICBUS, B, T)
   58         
   59 IICBUS_ACCESSOR(addr,           ADDR,           uint32_t)
   60 
   61 #define IICBUS_LOCK(sc)                 mtx_lock(&(sc)->lock)
   62 #define IICBUS_UNLOCK(sc)               mtx_unlock(&(sc)->lock)
   63 #define IICBUS_ASSERT_LOCKED(sc)        mtx_assert(&(sc)->lock, MA_OWNED)
   64 
   65 extern int iicbus_generic_intr(device_t dev, int event, char *buf);
   66 
   67 extern driver_t iicbus_driver;
   68 extern devclass_t iicbus_devclass;
   69 
   70 #endif

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FreeBSD/Linux Kernel Cross Reference sys/dev/iicbus/iicbus.h

FreeBSD/Linux Kernel Cross Reference
sys/dev/iicbus/iicbus.h