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sys/dev/sound/fdt/dummy_codec.c
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| /*- | |||||
| * SPDX-License-Identifier: BSD-2-Clause-FreeBSD | |||||
| * | |||||
| * Copyright (c) 2020 Oleksandr Tymoshenko <gonzo@FreeBSD.org> | |||||
| * | |||||
| * 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 AUTHOR ``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 AUTHOR 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. | |||||
| * | |||||
| * $FreeBSD$ | |||||
| */ | |||||
| #include <sys/cdefs.h> | |||||
| __FBSDID("$FreeBSD$"); | |||||
| #include <sys/param.h> | |||||
| #include <sys/systm.h> | |||||
| #include <sys/bus.h> | |||||
| #include <sys/kernel.h> | |||||
| #include <sys/lock.h> | |||||
| #include <sys/module.h> | |||||
| #include <sys/mutex.h> | |||||
| #include <sys/rman.h> | |||||
| #include <sys/resource.h> | |||||
| #include <machine/bus.h> | |||||
| #include <dev/ofw/ofw_bus.h> | |||||
| #include <dev/ofw/ofw_bus_subr.h> | |||||
| #include "opt_snd.h" | |||||
| #include <dev/sound/pcm/sound.h> | |||||
| #include <dev/sound/fdt/audio_dai.h> | |||||
| #include "audio_dai_if.h" | |||||
| static struct ofw_compat_data compat_data[] = { | |||||
| { "dummy-codec", 1}, | |||||
| { NULL, 0 } | |||||
| }; | |||||
| struct dummy_codec_softc { | |||||
| device_t dev; | |||||
| }; | |||||
| static int dummy_codec_probe(device_t dev); | |||||
| static int dummy_codec_attach(device_t dev); | |||||
| static int dummy_codec_detach(device_t dev); | |||||
| static int | |||||
| dummy_codec_probe(device_t dev) | |||||
| { | |||||
| if (!ofw_bus_status_okay(dev)) | |||||
| return (ENXIO); | |||||
| if (!ofw_bus_search_compatible(dev, compat_data)->ocd_data) | |||||
| return (ENXIO); | |||||
| device_set_desc(dev, "Dummy Codec"); | |||||
| return (BUS_PROBE_DEFAULT); | |||||
| } | |||||
| static int | |||||
| dummy_codec_attach(device_t dev) | |||||
| { | |||||
| struct dummy_codec_softc *sc; | |||||
| phandle_t node; | |||||
| sc = device_get_softc(dev); | |||||
| sc->dev = dev; | |||||
| node = ofw_bus_get_node(dev); | |||||
| OF_device_register_xref(OF_xref_from_node(node), dev); | |||||
| return (0); | |||||
| } | |||||
| static int | |||||
| dummy_codec_detach(device_t dev) | |||||
| { | |||||
| return (0); | |||||
| } | |||||
| static int | |||||
| dummy_codec_dai_init(device_t dev, uint32_t format) | |||||
| { | |||||
| return (0); | |||||
| } | |||||
| static device_method_t dummy_codec_methods[] = { | |||||
| /* Device interface */ | |||||
| DEVMETHOD(device_probe, dummy_codec_probe), | |||||
| DEVMETHOD(device_attach, dummy_codec_attach), | |||||
| DEVMETHOD(device_detach, dummy_codec_detach), | |||||
| DEVMETHOD(audio_dai_init, dummy_codec_dai_init), | |||||
| DEVMETHOD_END | |||||
| }; | |||||
| static driver_t dummy_codec_driver = { | |||||
| "dummycodec", | |||||
| dummy_codec_methods, | |||||
| sizeof(struct dummy_codec_softc), | |||||
| }; | |||||
| static devclass_t dummy_codec_devclass; | |||||
| DRIVER_MODULE(dummy_codec, simplebus, dummy_codec_driver, dummy_codec_devclass, 0, 0); | |||||
| SIMPLEBUS_PNP_INFO(compat_data); | |||||