NetBSD/sys/dev/spkr_audio.c

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/* $NetBSD: spkr_audio.c,v 1.11 2021/04/03 04:10:30 isaki Exp $ */
/*-
* Copyright (c) 2016 Nathanial Sloss <nathanialsloss@yahoo.com.au>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: spkr_audio.c,v 1.11 2021/04/03 04:10:30 isaki Exp $");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/audioio.h>
#include <sys/kernel.h>
#include <sys/errno.h>
#include <sys/device.h>
#include <sys/malloc.h>
#include <sys/uio.h>
#include <sys/proc.h>
#include <sys/ioctl.h>
#include <sys/conf.h>
#include <sys/sysctl.h>
#include <dev/audio/audiovar.h>
#include <dev/audio/audiobellvar.h>
#include <dev/spkrvar.h>
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#include <dev/spkrio.h>
static int spkr_audio_probe(device_t, cfdata_t, void *);
static void spkr_audio_attach(device_t, device_t, void *);
static int spkr_audio_detach(device_t, int);
static int spkr_audio_rescan(device_t, const char *, const int *);
static void spkr_audio_childdet(device_t, device_t);
struct spkr_audio_softc {
struct spkr_softc sc_spkr;
device_t sc_audiodev;
};
CFATTACH_DECL3_NEW(spkr_audio, sizeof(struct spkr_audio_softc),
spkr_audio_probe, spkr_audio_attach, spkr_audio_detach, NULL,
spkr_audio_rescan, spkr_audio_childdet, 0);
static void
spkr_audio_tone(device_t self, u_int xhz, u_int ticks)
{
struct spkr_audio_softc *sc = device_private(self);
#ifdef SPKRDEBUG
device_printf(self, "%s: %u %u\n", __func__, xhz, ticks);
#endif /* SPKRDEBUG */
if (xhz == 0 || ticks == 0)
return;
audiobell(sc->sc_audiodev, xhz, hztoms(ticks), sc->sc_spkr.sc_vol, 0);
}
static int
spkr_audio_probe(device_t parent, cfdata_t cf, void *aux)
{
struct audio_softc *asc = device_private(parent);
if ((asc->sc_props & AUDIO_PROP_PLAYBACK))
return 1;
return 0;
}
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static void
spkr_audio_attach(device_t parent, device_t self, void *aux)
{
struct spkr_audio_softc *sc = device_private(self);
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aprint_naive("\n");
aprint_normal(": PC Speaker (synthesized)\n");
sc->sc_audiodev = parent;
sc->sc_spkr.sc_vol = 80;
if (!pmf_device_register(self, NULL, NULL))
aprint_error_dev(self, "couldn't establish power handler\n");
spkr_attach(self, spkr_audio_tone);
}
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static int
spkr_audio_detach(device_t self, int flags)
{
int error;
if ((error = spkr_detach(self, flags)) != 0)
return error;
pmf_device_deregister(self);
return 0;
}
static int
spkr_audio_rescan(device_t self, const char *iattr, const int *locators)
{
return spkr_rescan(self, iattr, locators);
}
static void
spkr_audio_childdet(device_t self, device_t child)
{
spkr_childdet(self, child);
}