FreeBSD/Linux Kernel Cross Reference
sys/arm/ti/am335x/am335x_usb_phy.c

     /*-
      *
      * 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.
     *
     * $FreeBSD$
     */
    
    #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>
    
    #define TI_AM335X_USB_PHY               1
    #define TI_AM335X_USB_PHY_END           0
    
    static struct ofw_compat_data compat_data[] = {
            { "ti,am335x-usb-phy",  TI_AM335X_USB_PHY },
            { NULL,                 TI_AM335X_USB_PHY_END }
    };
    
    struct ti_usb_phy_softc {
            device_t                dev;
    };
    
    static int ti_usb_phy_probe(device_t dev);
    static int ti_usb_phy_attach(device_t dev);
    static int ti_usb_phy_detach(device_t dev);
    
    static int
    ti_usb_phy_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 AM335x USB PHY");
            if (!bootverbose)
                    device_quiet(dev);
    
            return (BUS_PROBE_DEFAULT);
    }
    
    static int
    ti_usb_phy_attach(device_t dev)
    {
            struct ti_usb_phy_softc *sc;
    
            sc = device_get_softc(dev);
            sc->dev = dev;
    
            /* FIXME: Add dev/extres/phy/ interface */
    
            return (bus_generic_attach(dev));
    }
    
    static int
    ti_usb_phy_detach(device_t dev)
    {
            return (EBUSY);
   }
   
   static device_method_t ti_usb_phy_methods[] = {
           /* Device interface */
           DEVMETHOD(device_probe,         ti_usb_phy_probe),
           DEVMETHOD(device_attach,        ti_usb_phy_attach),
           DEVMETHOD(device_detach,        ti_usb_phy_detach),
   
           DEVMETHOD_END
   };
   
   DEFINE_CLASS_1(ti_usb_phy, ti_usb_phy_driver, ti_usb_phy_methods,
       sizeof(struct ti_usb_phy_softc), simplebus_driver);
   
   EARLY_DRIVER_MODULE(ti_usb_phy, simplebus, ti_usb_phy_driver, 0, 0,
       BUS_PASS_BUS + BUS_PASS_ORDER_FIRST);
   MODULE_VERSION(ti_usb_phy, 1);
   MODULE_DEPEND(ti_usb_phy, ti_sysc, 1, 1, 1);

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