1 /* $OpenBSD: radio.c,v 1.6 2002/05/30 15:22:26 mickey 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
radioprobe(struct device * parent,void * match,void * aux)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
radioattach(struct device * parent,struct device * self,void * aux)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
radioopen(dev_t dev,int flags,int fmt,struct proc * p)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
radioclose(dev_t dev,int flags,int fmt,struct proc * p)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
radioioctl(dev_t dev,u_long cmd,caddr_t data,int flags,struct proc * p)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 *
radio_attach_mi(struct radio_hw_if * rhwp,void * hdlp,struct device * dev)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
radioprint(void * aux,const char * pnp)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
radiodetach(struct device * self,int flags)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
radioactivate(struct device * self,enum devact act)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 return (EOPNOTSUPP);
200 break;
201
202 case DVACT_DEACTIVATE:
203 sc->sc_dying = 1;
204 break;
205 }
206 return (0);
207 }
208