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/* $OpenBSD: owid.c,v 1.4 2007/03/22 16:55:31 deraadt Exp $ */
/*
* Copyright (c) 2006 Alexander Yurchenko <grange@openbsd.org>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
/*
* 1-Wire ID family type device driver.
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/device.h>
#include <sys/kernel.h>
#include <sys/proc.h>
#include <sys/sensors.h>
#include <dev/onewire/onewiredevs.h>
#include <dev/onewire/onewirereg.h>
#include <dev/onewire/onewirevar.h>
struct owid_softc {
struct device sc_dev;
void * sc_onewire;
u_int64_t sc_rom;
struct ksensor sc_sensor;
struct ksensordev sc_sensordev;
int sc_dying;
};
int owid_match(struct device *, void *, void *);
void owid_attach(struct device *, struct device *, void *);
int owid_detach(struct device *, int);
int owid_activate(struct device *, enum devact);
struct cfattach owid_ca = {
sizeof(struct owid_softc),
owid_match,
owid_attach,
owid_detach,
owid_activate
};
struct cfdriver owid_cd = {
NULL, "owid", DV_DULL
};
static const struct onewire_matchfam owid_fams[] = {
{ ONEWIRE_FAMILY_DS1990 }
};
int
owid_match(struct device *parent, void *match, void *aux)
{
return (onewire_matchbyfam(aux, owid_fams,
sizeof(owid_fams) /sizeof(owid_fams[0])));
}
void
owid_attach(struct device *parent, struct device *self, void *aux)
{
struct owid_softc *sc = (struct owid_softc *)self;
struct onewire_attach_args *oa = aux;
sc->sc_onewire = oa->oa_onewire;
sc->sc_rom = oa->oa_rom;
/* Initialize sensor */
strlcpy(sc->sc_sensordev.xname, sc->sc_dev.dv_xname,
sizeof(sc->sc_sensordev.xname));
sc->sc_sensor.type = SENSOR_INTEGER;
strlcpy(sc->sc_sensor.desc, "ID", sizeof(sc->sc_sensor.desc));
sc->sc_sensor.value = ONEWIRE_ROM_SN(sc->sc_rom);
sensor_attach(&sc->sc_sensordev, &sc->sc_sensor);
sensordev_install(&sc->sc_sensordev);
printf("\n");
}
int
owid_detach(struct device *self, int flags)
{
struct owid_softc *sc = (struct owid_softc *)self;
sensordev_deinstall(&sc->sc_sensordev);
return (0);
}
int
owid_activate(struct device *self, enum devact act)
{
struct owid_softc *sc = (struct owid_softc *)self;
switch (act) {
case DVACT_ACTIVATE:
break;
case DVACT_DEACTIVATE:
sc->sc_dying = 1;
break;
}
return (0);
}
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