Annotation of sys/dev/radio.c, Revision 1.1
1.1 ! nbrk 1: /* $OpenBSD: radio.c,v 1.7 2006/06/23 06:27:11 miod Exp $ */
! 2: /* $RuOBSD: radio.c,v 1.7 2001/12/04 06:03:05 tm Exp $ */
! 3:
! 4: /*
! 5: * Copyright (c) 2001 Maxim Tsyplakov <tm@oganer.net>
! 6: * All rights reserved.
! 7: *
! 8: * Redistribution and use in source and binary forms, with or without
! 9: * modification, are permitted provided that the following conditions
! 10: * are met:
! 11: * 1. Redistributions of source code must retain the above copyright
! 12: * notice, this list of conditions and the following disclaimer.
! 13: * 2. Redistributions in binary form must reproduce the above copyright
! 14: * notice, this list of conditions and the following disclaimer in the
! 15: * documentation and/or other materials provided with the distribution.
! 16: *
! 17: * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
! 18: * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
! 19: * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
! 20: * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
! 21: * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
! 22: * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
! 23: * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
! 24: * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
! 25: * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
! 26: * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
! 27: */
! 28:
! 29: /* This is /dev/radio driver for OpenBSD */
! 30:
! 31: #include <sys/param.h>
! 32: #include <sys/systm.h>
! 33: #include <sys/proc.h>
! 34: #include <sys/errno.h>
! 35: #include <sys/ioctl.h>
! 36: #include <sys/fcntl.h>
! 37: #include <sys/device.h>
! 38: #include <sys/vnode.h>
! 39: #include <sys/radioio.h>
! 40: #include <sys/conf.h>
! 41:
! 42: #include <dev/audio_if.h>
! 43: #include <dev/radio_if.h>
! 44: #include <dev/radiovar.h>
! 45:
! 46: int radioprobe(struct device *, void *, void *);
! 47: void radioattach(struct device *, struct device *, void *);
! 48: int radiodetach(struct device *, int);
! 49: int radioactivate(struct device *, enum devact);
! 50: int radioprint(void *, const char *);
! 51:
! 52: struct cfattach radio_ca = {
! 53: sizeof(struct radio_softc), radioprobe, radioattach,
! 54: radiodetach, radioactivate
! 55: };
! 56:
! 57: struct cfdriver radio_cd = {
! 58: NULL, "radio", DV_DULL
! 59: };
! 60:
! 61: int
! 62: radioprobe(struct device *parent, void *match, void *aux)
! 63: {
! 64: struct audio_attach_args *sa = aux;
! 65: return (sa->type == AUDIODEV_TYPE_RADIO) ? 1 : 0;
! 66: }
! 67:
! 68: void
! 69: radioattach(struct device *parent, struct device *self, void *aux)
! 70: {
! 71: struct radio_softc *sc = (void *) self;
! 72: struct audio_attach_args *sa = aux;
! 73:
! 74: printf("\n");
! 75: sc->hw_if = sa->hwif;
! 76: sc->hw_hdl = sa->hdl;
! 77: sc->sc_dev = parent;
! 78: }
! 79:
! 80: int
! 81: radioopen(dev_t dev, int flags, int fmt, struct proc *p)
! 82: {
! 83: int unit;
! 84: struct radio_softc *sc;
! 85:
! 86: unit = RADIOUNIT(dev);
! 87: if (unit >= radio_cd.cd_ndevs ||
! 88: (sc = radio_cd.cd_devs[unit]) == NULL ||
! 89: sc->hw_if == NULL)
! 90: return (ENXIO);
! 91:
! 92: if (sc->hw_if->open != NULL)
! 93: return (sc->hw_if->open(sc->hw_hdl, flags, fmt, p));
! 94: else
! 95: return (0);
! 96: }
! 97:
! 98: int
! 99: radioclose(dev_t dev, int flags, int fmt, struct proc *p)
! 100: {
! 101: struct radio_softc *sc;
! 102:
! 103: sc = radio_cd.cd_devs[RADIOUNIT(dev)];
! 104:
! 105: if (sc->hw_if->close != NULL)
! 106: return (sc->hw_if->close(sc->hw_hdl, flags, fmt, p));
! 107: else
! 108: return (0);
! 109: }
! 110:
! 111: int
! 112: radioioctl(dev_t dev, u_long cmd, caddr_t data, int flags, struct proc *p)
! 113: {
! 114: struct radio_softc *sc;
! 115: int unit, error;
! 116:
! 117: unit = RADIOUNIT(dev);
! 118: if (unit >= radio_cd.cd_ndevs ||
! 119: (sc = radio_cd.cd_devs[unit]) == NULL || sc->hw_if == NULL)
! 120: return (ENXIO);
! 121:
! 122: error = EOPNOTSUPP;
! 123: switch (cmd) {
! 124: case RIOCGINFO:
! 125: if (sc->hw_if->get_info)
! 126: error = (sc->hw_if->get_info)(sc->hw_hdl,
! 127: (struct radio_info *)data);
! 128: break;
! 129: case RIOCSINFO:
! 130: if (!(flags & FWRITE))
! 131: return (EACCES);
! 132: if (sc->hw_if->set_info)
! 133: error = (sc->hw_if->set_info)(sc->hw_hdl,
! 134: (struct radio_info *)data);
! 135: break;
! 136: case RIOCSSRCH:
! 137: if (!(flags & FWRITE))
! 138: return (EACCES);
! 139: if (sc->hw_if->search)
! 140: error = (sc->hw_if->search)(sc->hw_hdl,
! 141: *(int *)data);
! 142: break;
! 143: default:
! 144: error = (ENOTTY);
! 145: }
! 146:
! 147: return (error);
! 148: }
! 149:
! 150: /*
! 151: * Called from hardware driver. This is where the MI radio driver gets
! 152: * probed/attached to the hardware driver
! 153: */
! 154:
! 155: struct device *
! 156: radio_attach_mi(struct radio_hw_if *rhwp, void *hdlp, struct device *dev)
! 157: {
! 158: struct audio_attach_args arg;
! 159:
! 160: arg.type = AUDIODEV_TYPE_RADIO;
! 161: arg.hwif = rhwp;
! 162: arg.hdl = hdlp;
! 163: return (config_found(dev, &arg, radioprint));
! 164: }
! 165:
! 166: int
! 167: radioprint(void *aux, const char *pnp)
! 168: {
! 169: if (pnp != NULL)
! 170: printf("radio at %s", pnp);
! 171: return (UNCONF);
! 172: }
! 173:
! 174: int
! 175: radiodetach(struct device *self, int flags)
! 176: {
! 177: /*struct radio_softc *sc = (struct radio_softc *)self;*/
! 178: int maj, mn;
! 179:
! 180: /* locate the major number */
! 181: for (maj = 0; maj < nchrdev; maj++)
! 182: if (cdevsw[maj].d_open == radioopen)
! 183: break;
! 184:
! 185: /* Nuke the vnodes for any open instances (calls close). */
! 186: mn = self->dv_unit;
! 187: vdevgone(maj, mn, mn, VCHR);
! 188:
! 189: return (0);
! 190: }
! 191:
! 192: int
! 193: radioactivate(struct device *self, enum devact act)
! 194: {
! 195: struct radio_softc *sc = (struct radio_softc *)self;
! 196:
! 197: switch (act) {
! 198: case DVACT_ACTIVATE:
! 199: break;
! 200:
! 201: case DVACT_DEACTIVATE:
! 202: sc->sc_dying = 1;
! 203: break;
! 204: }
! 205: return (0);
! 206: }
CVSweb
![[BACK]](/icons/back.gif){kind=icon}
Return to radio.c CVS log ![[TXT]](/icons/text.gif){kind=icon}
![[DIR]](/icons/dir.gif){kind=icon}
Up to [local] / sys / dev