FreeBSD/Linux Kernel Cross Reference
sys/arm/ti/ti_omap4_cm.c

     /*-
      * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
      *
      * Copyright (c) 2019 Emmanuel Vadot <manu@FreeBSD.org>
      * Copyright (c) 2020 Oskar Holmlund <oskar.holmlund@ohdata.se>
      *
      * 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.
     *
     * Based on sys/arm/ti/ti_sysc.c
     *
     * $FreeBSD$
     */
    
    #include <sys/cdefs.h>
    __FBSDID("$FreeBSD$");
    
    #include <sys/param.h>
    #include <sys/systm.h>
    #include <sys/bus.h>
    #include <sys/fbio.h>
    #include <sys/kernel.h>
    #include <sys/module.h>
    #include <sys/rman.h>
    #include <sys/resource.h>
    #include <machine/bus.h>
    #include <vm/vm.h>
    #include <vm/vm_extern.h>
    #include <vm/vm_kern.h>
    #include <vm/pmap.h>
    
    #include <dev/fdt/simplebus.h>
    
    #include <dev/ofw/ofw_bus.h>
    #include <dev/ofw/ofw_bus_subr.h>
    
    #include <arm/ti/ti_omap4_cm.h>
    
    static struct ofw_compat_data compat_data[] = {
            { "ti,omap4-cm",        1 },
            { NULL,                         0 }
    };
    
    struct ti_omap4_cm_softc {
            struct simplebus_softc  sc;
            device_t                dev;
    };
    
    uint64_t
    ti_omap4_cm_get_simplebus_base_host(device_t dev) {
            struct ti_omap4_cm_softc *sc;
    
            sc = device_get_softc(dev);
            if (sc->sc.nranges == 0)
                    return (0);
    
            return (sc->sc.ranges[0].host);
    }
    
    static int ti_omap4_cm_probe(device_t dev);
    static int ti_omap4_cm_attach(device_t dev);
    static int ti_omap4_cm_detach(device_t dev);
    
    static int
    ti_omap4_cm_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, "TI OMAP4-CM");
            if (!bootverbose)
                    device_quiet(dev);
    
            return (BUS_PROBE_DEFAULT);
    }
    
    static int
    ti_omap4_cm_attach(device_t dev)
   {
           struct ti_omap4_cm_softc *sc;
           device_t cdev;
           phandle_t node, child;
   
           sc = device_get_softc(dev);
           sc->dev = dev;
           node = ofw_bus_get_node(dev);
   
           simplebus_init(dev, node);
           if (simplebus_fill_ranges(node, &sc->sc) < 0) {
                   device_printf(dev, "could not get ranges\n");
                   return (ENXIO);
           }
   
           bus_generic_probe(sc->dev);
   
           for (child = OF_child(node); child > 0; child = OF_peer(child)) {
                   cdev = simplebus_add_device(dev, child, 0, NULL, -1, NULL);
                   if (cdev != NULL)
                           device_probe_and_attach(cdev);
           }
   
           return (bus_generic_attach(dev));
   }
   
   static int
   ti_omap4_cm_detach(device_t dev)
   {
           return (EBUSY);
   }
   
   static device_method_t ti_omap4_cm_methods[] = {
           /* Device interface */
           DEVMETHOD(device_probe,         ti_omap4_cm_probe),
           DEVMETHOD(device_attach,        ti_omap4_cm_attach),
           DEVMETHOD(device_detach,        ti_omap4_cm_detach),
   
           DEVMETHOD_END
   };
   
   DEFINE_CLASS_1(ti_omap4_cm, ti_omap4_cm_driver, ti_omap4_cm_methods,
       sizeof(struct ti_omap4_cm_softc), simplebus_driver);
   
   static devclass_t ti_omap4_cm_devclass;
   
   EARLY_DRIVER_MODULE(ti_omap4_cm, simplebus, ti_omap4_cm_driver,
   ti_omap4_cm_devclass, 0, 0, BUS_PASS_BUS + BUS_PASS_ORDER_FIRST);
   
   EARLY_DRIVER_MODULE(ti_omap4_cm, ofwbus, ti_omap4_cm_driver,
   ti_omap4_cm_devclass, 0, 0, BUS_PASS_BUS + BUS_PASS_ORDER_FIRST);

Cache object: eb7accc088a28e5be5cff2e4803b146b