1/*-
2 * Copyright (c) 1998, 2001 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 *
27 */
28
29#include <sys/cdefs.h>
30__FBSDID("$FreeBSD$");
31#include <sys/param.h>
32#include <sys/systm.h>
33#include <sys/lock.h>
34#include <sys/module.h>
35#include <sys/mutex.h>
36#include <sys/bus.h>
37
38#include <dev/smbus/smbconf.h>
39#include <dev/smbus/smbus.h>
40
41/*
42 * Autoconfiguration and support routines for System Management bus
43 */
44
45/*
46 * Device methods
47 */
48static int smbus_probe(device_t);
49static int smbus_attach(device_t);
50static int smbus_detach(device_t);
51
52static device_method_t smbus_methods[] = {
53        /* device interface */
54        DEVMETHOD(device_probe,         smbus_probe),
55        DEVMETHOD(device_attach,        smbus_attach),
56        DEVMETHOD(device_detach,        smbus_detach),
57
58	/* bus interface */
59	DEVMETHOD(bus_add_child,	bus_generic_add_child),
60
61	DEVMETHOD_END
62};
63
64driver_t smbus_driver = {
65        "smbus",
66        smbus_methods,
67        sizeof(struct smbus_softc),
68};
69
70devclass_t smbus_devclass;
71
72/*
73 * At 'probe' time, we add all the devices which we know about to the
74 * bus.  The generic attach routine will probe and attach them if they
75 * are alive.
76 */
77static int
78smbus_probe(device_t dev)
79{
80
81	device_set_desc(dev, "System Management Bus");
82
83	return (0);
84}
85
86static int
87smbus_attach(device_t dev)
88{
89	struct smbus_softc *sc = device_get_softc(dev);
90
91	mtx_init(&sc->lock, device_get_nameunit(dev), "smbus", MTX_DEF);
92	bus_generic_probe(dev);
93	bus_generic_attach(dev);
94
95	return (0);
96}
97
98static int
99smbus_detach(device_t dev)
100{
101	struct smbus_softc *sc = device_get_softc(dev);
102	int error;
103
104	error = bus_generic_detach(dev);
105	if (error)
106		return (error);
107	mtx_destroy(&sc->lock);
108
109	return (0);
110}
111
112void
113smbus_generic_intr(device_t dev, u_char devaddr, char low, char high, int err)
114{
115}
116
117MODULE_VERSION(smbus, SMBUS_MODVER);
118