1 /* $NetBSD: spkr_audio.c,v 1.11 2021/04/03 04:10:30 isaki 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 1.11 2021/04/03 04:10:30 isaki 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