2cfe870acd
This framework is initial implementation of the simple-audio-card compatible audio driver framework. It provides glue for CPU/codec/aux device. Differential Revision: https://reviews.freebsd.org/D27830
128 lines
3.2 KiB
C
128 lines
3.2 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
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*
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* Copyright (c) 2020 Oleksandr Tymoshenko <gonzo@FreeBSD.org>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/bus.h>
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#include <sys/kernel.h>
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#include <sys/lock.h>
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#include <sys/module.h>
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#include <sys/mutex.h>
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#include <sys/rman.h>
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#include <sys/resource.h>
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#include <machine/bus.h>
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#include <dev/ofw/ofw_bus.h>
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#include <dev/ofw/ofw_bus_subr.h>
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#include "opt_snd.h"
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#include <dev/sound/pcm/sound.h>
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#include <dev/sound/fdt/audio_dai.h>
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#include "audio_dai_if.h"
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static struct ofw_compat_data compat_data[] = {
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{ "dummy-codec", 1},
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{ NULL, 0 }
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};
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struct dummy_codec_softc {
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device_t dev;
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};
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static int dummy_codec_probe(device_t dev);
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static int dummy_codec_attach(device_t dev);
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static int dummy_codec_detach(device_t dev);
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static int
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dummy_codec_probe(device_t dev)
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{
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if (!ofw_bus_status_okay(dev))
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return (ENXIO);
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if (!ofw_bus_search_compatible(dev, compat_data)->ocd_data)
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return (ENXIO);
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device_set_desc(dev, "Dummy Codec");
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return (BUS_PROBE_DEFAULT);
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}
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static int
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dummy_codec_attach(device_t dev)
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{
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struct dummy_codec_softc *sc;
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phandle_t node;
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sc = device_get_softc(dev);
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sc->dev = dev;
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node = ofw_bus_get_node(dev);
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OF_device_register_xref(OF_xref_from_node(node), dev);
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return (0);
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}
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static int
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dummy_codec_detach(device_t dev)
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{
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return (0);
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}
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static int
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dummy_codec_dai_init(device_t dev, uint32_t format)
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{
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return (0);
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}
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static device_method_t dummy_codec_methods[] = {
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/* Device interface */
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DEVMETHOD(device_probe, dummy_codec_probe),
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DEVMETHOD(device_attach, dummy_codec_attach),
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DEVMETHOD(device_detach, dummy_codec_detach),
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DEVMETHOD(audio_dai_init, dummy_codec_dai_init),
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DEVMETHOD_END
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};
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static driver_t dummy_codec_driver = {
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"dummycodec",
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dummy_codec_methods,
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sizeof(struct dummy_codec_softc),
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};
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static devclass_t dummy_codec_devclass;
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DRIVER_MODULE(dummy_codec, simplebus, dummy_codec_driver, dummy_codec_devclass, 0, 0);
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SIMPLEBUS_PNP_INFO(compat_data);
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