mirror of
https://git.FreeBSD.org/src.git
synced 2024-12-26 11:47:31 +00:00
153 lines
4.2 KiB
C
153 lines
4.2 KiB
C
/*-
|
|
* 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);
|