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/* $OpenBSD: radio.c,v 1.9 2011/07/03 15:47:16 matthew Exp $ */
/* $RuOBSD: radio.c,v 1.7 2001/12/04 06:03:05 tm Exp $ */
/*
* Copyright (c) 2001 Maxim Tsyplakov <tm@oganer.net>
* 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 ``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 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.
*/
/* This is /dev/radio driver for OpenBSD */
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/proc.h>
#include <sys/errno.h>
#include <sys/ioctl.h>
#include <sys/fcntl.h>
#include <sys/device.h>
#include <sys/vnode.h>
#include <sys/radioio.h>
#include <sys/conf.h>
#include <dev/audio_if.h>
#include <dev/radio_if.h>
#include <dev/radiovar.h>
int radioprobe(struct device *, void *, void *);
void radioattach(struct device *, struct device *, void *);
int radiodetach(struct device *, int);
int radioactivate(struct device *, int);
int radioprint(void *, const char *);
struct cfattach radio_ca = {
sizeof(struct radio_softc), radioprobe, radioattach,
radiodetach, radioactivate
};
struct cfdriver radio_cd = {
NULL, "radio", DV_DULL
};
int
radioprobe(struct device *parent, void *match, void *aux)
{
struct audio_attach_args *sa = aux;
return (sa->type == AUDIODEV_TYPE_RADIO) ? 1 : 0;
}
void
radioattach(struct device *parent, struct device *self, void *aux)
{
struct radio_softc *sc = (void *) self;
struct audio_attach_args *sa = aux;
printf("\n");
sc->hw_if = sa->hwif;
sc->hw_hdl = sa->hdl;
sc->sc_dev = parent;
}
int
radioopen(dev_t dev, int flags, int fmt, struct proc *p)
{
int unit;
struct radio_softc *sc;
unit = RADIOUNIT(dev);
if (unit >= radio_cd.cd_ndevs ||
(sc = radio_cd.cd_devs[unit]) == NULL ||
sc->hw_if == NULL)
return (ENXIO);
if (sc->hw_if->open != NULL)
return (sc->hw_if->open(sc->hw_hdl, flags, fmt, p));
else
return (0);
}
int
radioclose(dev_t dev, int flags, int fmt, struct proc *p)
{
struct radio_softc *sc;
sc = radio_cd.cd_devs[RADIOUNIT(dev)];
if (sc->hw_if->close != NULL)
return (sc->hw_if->close(sc->hw_hdl, flags, fmt, p));
else
return (0);
}
int
radioioctl(dev_t dev, u_long cmd, caddr_t data, int flags, struct proc *p)
{
struct radio_softc *sc;
int unit, error;
unit = RADIOUNIT(dev);
if (unit >= radio_cd.cd_ndevs ||
(sc = radio_cd.cd_devs[unit]) == NULL || sc->hw_if == NULL)
return (ENXIO);
error = EOPNOTSUPP;
switch (cmd) {
case RIOCGINFO:
if (sc->hw_if->get_info)
error = (sc->hw_if->get_info)(sc->hw_hdl,
(struct radio_info *)data);
break;
case RIOCSINFO:
if (!(flags & FWRITE))
return (EACCES);
if (sc->hw_if->set_info)
error = (sc->hw_if->set_info)(sc->hw_hdl,
(struct radio_info *)data);
break;
case RIOCSSRCH:
if (!(flags & FWRITE))
return (EACCES);
if (sc->hw_if->search)
error = (sc->hw_if->search)(sc->hw_hdl,
*(int *)data);
break;
default:
error = (ENOTTY);
}
return (error);
}
/*
* Called from hardware driver. This is where the MI radio driver gets
* probed/attached to the hardware driver
*/
struct device *
radio_attach_mi(struct radio_hw_if *rhwp, void *hdlp, struct device *dev)
{
struct audio_attach_args arg;
arg.type = AUDIODEV_TYPE_RADIO;
arg.hwif = rhwp;
arg.hdl = hdlp;
return (config_found(dev, &arg, radioprint));
}
int
radioprint(void *aux, const char *pnp)
{
if (pnp != NULL)
printf("radio at %s", pnp);
return (UNCONF);
}
int
radiodetach(struct device *self, int flags)
{
/*struct radio_softc *sc = (struct radio_softc *)self;*/
int maj, mn;
/* locate the major number */
for (maj = 0; maj < nchrdev; maj++)
if (cdevsw[maj].d_open == radioopen)
break;
/* Nuke the vnodes for any open instances (calls close). */
mn = self->dv_unit;
vdevgone(maj, mn, mn, VCHR);
return (0);
}
int
radioactivate(struct device *self, int act)
{
struct radio_softc *sc = (struct radio_softc *)self;
switch (act) {
case DVACT_DEACTIVATE:
sc->sc_dying = 1;
break;
}
return (0);
}
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