1 /* $NetBSD: spkr_audio.c,v 1.12 2022/09/24 23:16:02 thorpej Exp $ */
2
3 /*-
4 * Copyright (c) 2016 Nathanial Sloss <nathanialsloss@yahoo.com.au>
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
17 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
18 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
19 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
20 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
26 * POSSIBILITY OF SUCH DAMAGE.
27 */
28
29 #include <sys/cdefs.h>
30 __KERNEL_RCSID(0, "$NetBSD: spkr_audio.c,v 1.12 2022/09/24 23:16:02 thorpej Exp $");
31
32 #include <sys/param.h>
33 #include <sys/systm.h>
34 #include <sys/audioio.h>
35 #include <sys/kernel.h>
36 #include <sys/errno.h>
37 #include <sys/device.h>
38 #include <sys/uio.h>
39 #include <sys/proc.h>
40 #include <sys/ioctl.h>
41 #include <sys/conf.h>
42 #include <sys/sysctl.h>
43
44 #include <dev/audio/audiovar.h>
45 #include <dev/audio/audiobellvar.h>
46
47 #include <dev/spkrvar.h>
48 #include <dev/spkrio.h>
49
50 static int spkr_audio_probe(device_t, cfdata_t, void *);
51 static void spkr_audio_attach(device_t, device_t, void *);
52 static int spkr_audio_detach(device_t, int);
53 static int spkr_audio_rescan(device_t, const char *, const int *);
54 static void spkr_audio_childdet(device_t, device_t);
55
56 struct spkr_audio_softc {
57 struct spkr_softc sc_spkr;
58 device_t sc_audiodev;
59 };
60
61 CFATTACH_DECL3_NEW(spkr_audio, sizeof(struct spkr_audio_softc),
62 spkr_audio_probe, spkr_audio_attach, spkr_audio_detach, NULL,
63 spkr_audio_rescan, spkr_audio_childdet, 0);
64
65 static void
spkr_audio_tone(device_t self,u_int xhz,u_int ticks)66 spkr_audio_tone(device_t self, u_int xhz, u_int ticks)
67 {
68 struct spkr_audio_softc *sc = device_private(self);
69
70 #ifdef SPKRDEBUG
71 device_printf(self, "%s: %u %u\n", __func__, xhz, ticks);
72 #endif /* SPKRDEBUG */
73
74 if (xhz == 0 || ticks == 0)
75 return;
76
77 audiobell(sc->sc_audiodev, xhz, hztoms(ticks), sc->sc_spkr.sc_vol, 0);
78 }
79
80 static int
spkr_audio_probe(device_t parent,cfdata_t cf,void * aux)81 spkr_audio_probe(device_t parent, cfdata_t cf, void *aux)
82 {
83 struct audio_softc *asc = device_private(parent);
84
85 if ((asc->sc_props & AUDIO_PROP_PLAYBACK))
86 return 1;
87
88 return 0;
89 }
90
91 static void
spkr_audio_attach(device_t parent,device_t self,void * aux)92 spkr_audio_attach(device_t parent, device_t self, void *aux)
93 {
94 struct spkr_audio_softc *sc = device_private(self);
95
96 aprint_naive("\n");
97 aprint_normal(": PC Speaker (synthesized)\n");
98
99 sc->sc_audiodev = parent;
100 sc->sc_spkr.sc_vol = 80;
101
102 if (!pmf_device_register(self, NULL, NULL))
103 aprint_error_dev(self, "couldn't establish power handler\n");
104
105 spkr_attach(self, spkr_audio_tone);
106 }
107
108 static int
spkr_audio_detach(device_t self,int flags)109 spkr_audio_detach(device_t self, int flags)
110 {
111 int error;
112
113 if ((error = spkr_detach(self, flags)) != 0)
114 return error;
115
116 pmf_device_deregister(self);
117
118 return 0;
119 }
120
121 static int
spkr_audio_rescan(device_t self,const char * iattr,const int * locators)122 spkr_audio_rescan(device_t self, const char *iattr, const int *locators)
123 {
124
125 return spkr_rescan(self, iattr, locators);
126 }
127
128 static void
spkr_audio_childdet(device_t self,device_t child)129 spkr_audio_childdet(device_t self, device_t child)
130 {
131
132 spkr_childdet(self, child);
133 }
134