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/*-
* Copyright (c) 1998 Nicolas Souchu
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $FreeBSD$
*
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/module.h>
#include <sys/bus.h>
#include <dev/smbus/smbconf.h>
#include <dev/smbus/smbus.h>
/*
* Autoconfiguration and support routines for the Philips serial I2C bus
*/
#define DEVTOSMBUS(dev) ((struct smbus_device*)device_get_ivars(dev))
/*
* structure used to attach devices to the I2C bus
*/
struct smbus_device {
const char *smbd_name; /* device name */
const char *smbd_desc; /* device descriptor */
};
/*
* list of known devices
*/
struct smbus_device smbus_children[] = {
{ "smb", "SMBus general purpose I/O" },
{ NULL, 0 }
};
static devclass_t smbus_devclass;
/*
* Device methods
*/
static int smbus_probe(device_t);
static int smbus_attach(device_t);
#if 0
static int smbus_read_ivar(device_t , device_t, int, u_long *);
#endif
static device_method_t smbus_methods[] = {
/* device interface */
DEVMETHOD(device_probe, smbus_probe),
DEVMETHOD(device_attach, smbus_attach),
DEVMETHOD(device_detach, bus_generic_detach),
DEVMETHOD(device_shutdown, bus_generic_shutdown),
/* bus interface */
DEVMETHOD(bus_print_child, bus_generic_print_child),
DEVMETHOD(bus_read_ivar, bus_generic_read_ivar),
DEVMETHOD(bus_write_ivar, bus_generic_write_ivar),
{ 0, 0 }
};
static driver_t smbus_driver = {
"smbus",
smbus_methods,
sizeof(struct smbus_softc),
};
/*
* At 'probe' time, we add all the devices which we know about to the
* bus. The generic attach routine will probe and attach them if they
* are alive.
*/
static int
smbus_probe(device_t dev)
{
device_set_desc(dev, "System Management Bus");
return (0);
}
static int
smbus_attach(device_t dev)
{
struct smbus_device *smbdev;
/* add known devices */
for (smbdev = smbus_children; smbdev->smbd_name; smbdev++) {
device_t child;
if (devclass_find(smbdev->smbd_name)) {
child = device_add_child(dev, smbdev->smbd_name, -1);
device_set_ivars(child, smbdev);
device_set_desc(child, smbdev->smbd_desc);
} else if (bootverbose)
printf("smbus: %s devclass not found\n",
smbdev->smbd_name);
}
bus_generic_attach(dev);
return (0);
}
void
smbus_generic_intr(device_t dev, u_char devaddr, char low, char high)
{
return;
}
#if 0
static int
smbus_read_ivar(device_t bus, device_t dev, int index, u_long* result)
{
struct smbus_device* smbdev = DEVTOSMBUS(dev);
switch (index) {
default:
break;
}
return (ENOENT);
}
#endif
DRIVER_MODULE(smbus, iicsmb, smbus_driver, smbus_devclass, 0, 0);
DRIVER_MODULE(smbus, bti2c, smbus_driver, smbus_devclass, 0, 0);
DRIVER_MODULE(smbus, intsmb, smbus_driver, smbus_devclass, 0, 0);
DRIVER_MODULE(smbus, alsmb, smbus_driver, smbus_devclass, 0, 0);
DRIVER_MODULE(smbus, ichsmb, smbus_driver, smbus_devclass, 0, 0);
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