/* $OpenBSD: radio.c,v 1.8 2009/10/13 19:33:16 pirofti 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_ACTIVATE: break; case DVACT_DEACTIVATE: sc->sc_dying = 1; break; } return (0); }