1 /* $OpenBSD: radio.c,v 1.13 2022/04/06 18:59:27 naddy 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/errno.h> 34 #include <sys/ioctl.h> 35 #include <sys/fcntl.h> 36 #include <sys/device.h> 37 #include <sys/vnode.h> 38 #include <sys/radioio.h> 39 #include <sys/conf.h> 40 41 #include <dev/audio_if.h> 42 #include <dev/radio_if.h> 43 #include <dev/radiovar.h> 44 45 int radioprobe(struct device *, void *, void *); 46 void radioattach(struct device *, struct device *, void *); 47 int radiodetach(struct device *, int); 48 int radioactivate(struct device *, int); 49 int radioprint(void *, const char *); 50 51 const struct cfattach radio_ca = { 52 sizeof(struct radio_softc), radioprobe, radioattach, 53 radiodetach, radioactivate 54 }; 55 56 struct cfdriver radio_cd = { 57 NULL, "radio", DV_DULL 58 }; 59 60 int 61 radioprobe(struct device *parent, void *match, void *aux) 62 { 63 struct audio_attach_args *sa = aux; 64 return (sa->type == AUDIODEV_TYPE_RADIO) ? 1 : 0; 65 } 66 67 void 68 radioattach(struct device *parent, struct device *self, void *aux) 69 { 70 struct radio_softc *sc = (void *) self; 71 struct audio_attach_args *sa = aux; 72 73 printf("\n"); 74 sc->hw_if = sa->hwif; 75 sc->hw_hdl = sa->hdl; 76 sc->sc_dev = parent; 77 } 78 79 int 80 radioopen(dev_t dev, int flags, int fmt, struct proc *p) 81 { 82 int unit; 83 struct radio_softc *sc; 84 85 unit = RADIOUNIT(dev); 86 if (unit >= radio_cd.cd_ndevs || 87 (sc = radio_cd.cd_devs[unit]) == NULL || 88 sc->hw_if == NULL) 89 return (ENXIO); 90 91 if (sc->hw_if->open != NULL) 92 return (sc->hw_if->open(sc->hw_hdl, flags, fmt, p)); 93 else 94 return (0); 95 } 96 97 int 98 radioclose(dev_t dev, int flags, int fmt, struct proc *p) 99 { 100 struct radio_softc *sc; 101 102 sc = radio_cd.cd_devs[RADIOUNIT(dev)]; 103 104 if (sc->hw_if->close != NULL) 105 return (sc->hw_if->close(sc->hw_hdl, flags, fmt, p)); 106 else 107 return (0); 108 } 109 110 int 111 radioioctl(dev_t dev, u_long cmd, caddr_t data, int flags, struct proc *p) 112 { 113 struct radio_softc *sc; 114 int unit, error; 115 116 unit = RADIOUNIT(dev); 117 if (unit >= radio_cd.cd_ndevs || 118 (sc = radio_cd.cd_devs[unit]) == NULL || sc->hw_if == NULL) 119 return (ENXIO); 120 121 error = EOPNOTSUPP; 122 switch (cmd) { 123 case RIOCGINFO: 124 if (sc->hw_if->get_info) 125 error = (sc->hw_if->get_info)(sc->hw_hdl, 126 (struct radio_info *)data); 127 break; 128 case RIOCSINFO: 129 if (!(flags & FWRITE)) 130 return (EACCES); 131 if (sc->hw_if->set_info) 132 error = (sc->hw_if->set_info)(sc->hw_hdl, 133 (struct radio_info *)data); 134 break; 135 case RIOCSSRCH: 136 if (!(flags & FWRITE)) 137 return (EACCES); 138 if (sc->hw_if->search) 139 error = (sc->hw_if->search)(sc->hw_hdl, 140 *(int *)data); 141 break; 142 default: 143 error = (ENOTTY); 144 } 145 146 return (error); 147 } 148 149 /* 150 * Called from hardware driver. This is where the MI radio driver gets 151 * probed/attached to the hardware driver 152 */ 153 154 struct device * 155 radio_attach_mi(const struct radio_hw_if *rhwp, void *hdlp, struct device *dev) 156 { 157 struct audio_attach_args arg; 158 159 arg.type = AUDIODEV_TYPE_RADIO; 160 arg.hwif = rhwp; 161 arg.hdl = hdlp; 162 return (config_found(dev, &arg, radioprint)); 163 } 164 165 int 166 radioprint(void *aux, const char *pnp) 167 { 168 if (pnp != NULL) 169 printf("radio at %s", pnp); 170 return (UNCONF); 171 } 172 173 int 174 radiodetach(struct device *self, int flags) 175 { 176 /*struct radio_softc *sc = (struct radio_softc *)self;*/ 177 int maj, mn; 178 179 /* locate the major number */ 180 for (maj = 0; maj < nchrdev; maj++) 181 if (cdevsw[maj].d_open == radioopen) 182 break; 183 184 /* Nuke the vnodes for any open instances (calls close). */ 185 mn = self->dv_unit; 186 vdevgone(maj, mn, mn, VCHR); 187 188 return (0); 189 } 190 191 int 192 radioactivate(struct device *self, int act) 193 { 194 struct radio_softc *sc = (struct radio_softc *)self; 195 196 switch (act) { 197 case DVACT_DEACTIVATE: 198 sc->sc_dying = 1; 199 break; 200 } 201 return (0); 202 } 203