FreeBSD/Linux Kernel Cross Reference
sys/arm/allwinner/aw_syscon.c

     /*-
      * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
      *
      * Copyright (c) 2018 Kyle Evans <kevans@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 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 AUTHOR 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.
     */
    
    /*
     * Allwinner syscon driver
     */
    
    #include <sys/cdefs.h>
    __FBSDID("$FreeBSD$");
    
    #include <sys/param.h>
    #include <sys/bus.h>
    #include <sys/kernel.h>
    #include <sys/module.h>
    #include <sys/mutex.h>
    #include <sys/rman.h>
    #include <machine/bus.h>
    
    #include <dev/ofw/openfirm.h>
    #include <dev/ofw/ofw_bus.h>
    #include <dev/ofw/ofw_bus_subr.h>
    
    #include <dev/extres/syscon/syscon.h>
    #include <dev/extres/syscon/syscon_generic.h>
    
    static struct ofw_compat_data compat_data[] = {
            {"allwinner,sun50i-a64-system-controller", 1},
            {"allwinner,sun50i-a64-system-control", 1},
            {"allwinner,sun8i-a83t-system-controller", 1},
            {"allwinner,sun8i-h3-system-controller", 1},
            {"allwinner,sun8i-h3-system-control", 1},
            {"allwinner,sun50i-h5-system-control", 1},
            {NULL,             0}
    };
    
    static int
    aw_syscon_probe(device_t dev)
    {
    
            if (!ofw_bus_status_okay(dev))
                    return (ENXIO);
            if (ofw_bus_search_compatible(dev, compat_data)->ocd_data == 0)
                    return (ENXIO);
    
            device_set_desc(dev, "Allwinner syscon");
            return (BUS_PROBE_DEFAULT);
    }
    
    static device_method_t aw_syscon_methods[] = {
            DEVMETHOD(device_probe, aw_syscon_probe),
    
            DEVMETHOD_END
    };
    
    DEFINE_CLASS_1(aw_syscon, aw_syscon_driver, aw_syscon_methods,
        sizeof(struct syscon_generic_softc), syscon_generic_driver);
    
    /* aw_syscon needs to attach prior to if_awg */
    EARLY_DRIVER_MODULE(aw_syscon, simplebus, aw_syscon_driver, 0, 0,
        BUS_PASS_SCHEDULER + BUS_PASS_ORDER_LAST);
    MODULE_VERSION(aw_syscon, 1);

Cache object: 2b995428095576ed4846db60cdfb5588