Home | History | Annotate | Line # | Download | only in dev
spkr_audio.c revision 1.8.10.1 
      1 /*	$NetBSD: spkr_audio.c,v 1.8.10.1 2021/04/03 22:28:43 thorpej Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 2016 Nathanial Sloss <nathanialsloss (at) 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 1.8.10.1 2021/04/03 22:28:43 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/malloc.h>
     39 #include <sys/uio.h>
     40 #include <sys/proc.h>
     41 #include <sys/ioctl.h>
     42 #include <sys/conf.h>
     43 #include <sys/sysctl.h>
     44 
     45 #include <dev/audio/audiovar.h>
     46 #include <dev/audio/audiobellvar.h>
     47 
     48 #include <dev/spkrvar.h>
     49 #include <dev/spkrio.h>
     50 
     51 static int spkr_audio_probe(device_t, cfdata_t, void *);
     52 static void spkr_audio_attach(device_t, device_t, void *);
     53 static int spkr_audio_detach(device_t, int);
     54 static int spkr_audio_rescan(device_t, const char *, const int *);
     55 static void spkr_audio_childdet(device_t, device_t);
     56 
     57 struct spkr_audio_softc {
     58 	struct spkr_softc sc_spkr;
     59 	device_t		sc_audiodev;
     60 };
     61 
     62 CFATTACH_DECL3_NEW(spkr_audio, sizeof(struct spkr_audio_softc),
     63     spkr_audio_probe, spkr_audio_attach, spkr_audio_detach, NULL,
     64     spkr_audio_rescan, spkr_audio_childdet, 0);
     65 
     66 static void
     67 spkr_audio_tone(device_t self, u_int xhz, u_int ticks)
     68 {
     69 	struct spkr_audio_softc *sc = device_private(self);
     70 
     71 #ifdef SPKRDEBUG
     72 	device_printf(self, "%s: %u %u\n", __func__, xhz, ticks);
     73 #endif /* SPKRDEBUG */
     74 
     75 	if (xhz == 0 || ticks == 0)
     76 		return;
     77 
     78 	audiobell(sc->sc_audiodev, xhz, hztoms(ticks), sc->sc_spkr.sc_vol, 0);
     79 }
     80 
     81 static int
     82 spkr_audio_probe(device_t parent, cfdata_t cf, void *aux)
     83 {
     84 	struct audio_softc *asc = device_private(parent);
     85 
     86 	if ((asc->sc_props & AUDIO_PROP_PLAYBACK))
     87 		return 1;
     88 
     89 	return 0;
     90 }
     91 
     92 static void
     93 spkr_audio_attach(device_t parent, device_t self, void *aux)
     94 {
     95 	struct spkr_audio_softc *sc = device_private(self);
     96 
     97 	aprint_naive("\n");
     98 	aprint_normal(": PC Speaker (synthesized)\n");
     99 
    100 	sc->sc_audiodev = parent;
    101 	sc->sc_spkr.sc_vol = 80;
    102 
    103 	if (!pmf_device_register(self, NULL, NULL))
    104 		aprint_error_dev(self, "couldn't establish power handler\n");
    105 
    106 	spkr_attach(self, spkr_audio_tone);
    107 }
    108 
    109 static int
    110 spkr_audio_detach(device_t self, int flags)
    111 {
    112 	int error;
    113 
    114 	if ((error = spkr_detach(self, flags)) != 0)
    115 		return error;
    116 
    117 	pmf_device_deregister(self);
    118 
    119 	return 0;
    120 }
    121 
    122 static int
    123 spkr_audio_rescan(device_t self, const char *iattr, const int *locators)
    124 {
    125 
    126 	return spkr_rescan(self, iattr, locators);
    127 }
    128 
    129 static void
    130 spkr_audio_childdet(device_t self, device_t child)
    131 {
    132 
    133 	spkr_childdet(self, child);
    134 }
    135