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      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 (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 1.12 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
     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
     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
     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
    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
    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
    129 spkr_audio_childdet(device_t self, device_t child)
    130 {
    131 
    132 	spkr_childdet(self, child);
    133 }
    134