84 lines
2.7 KiB
C
84 lines
2.7 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
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*
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* Copyright (c) 2018 Kyle Evans <kevans@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 AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, 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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/*
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* Allwinner syscon driver
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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/bus.h>
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#include <sys/kernel.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 <machine/bus.h>
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#include <dev/ofw/openfirm.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 <dev/extres/syscon/syscon.h>
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#include <dev/extres/syscon/syscon_generic.h>
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static struct ofw_compat_data compat_data[] = {
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{"allwinner,sun50i-a64-system-controller", 1},
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{"allwinner,sun8i-a83t-system-controller", 1},
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{"allwinner,sun8i-h3-system-controller", 1},
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{NULL, 0}
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};
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static int
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aw_syscon_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 == 0)
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return (ENXIO);
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device_set_desc(dev, "Allwinner syscon");
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return (BUS_PROBE_DEFAULT);
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}
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static device_method_t aw_syscon_methods[] = {
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DEVMETHOD(device_probe, aw_syscon_probe),
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DEVMETHOD_END
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};
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DEFINE_CLASS_1(aw_syscon, aw_syscon_driver, aw_syscon_methods,
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sizeof(struct syscon_generic_softc), syscon_generic_driver);
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static devclass_t aw_syscon_devclass;
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/* aw_syscon needs to attach prior to if_awg */
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EARLY_DRIVER_MODULE(aw_syscon, simplebus, aw_syscon_driver, aw_syscon_devclass,
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0, 0, BUS_PASS_SUPPORTDEV + BUS_PASS_ORDER_MIDDLE);
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MODULE_VERSION(aw_syscon, 1);
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