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/*-
* Copyright (c) 2013 Ian Lepore <ian@freebsd.org>
* All rights reserved.
*
* 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.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
/*
* USBPHY "no-op" driver for Freescale family of SoCs. This driver is used on
* SoCs which have usbphy hardware whose clocks need to be enabled, but no other
* action has to be taken to make the hardware work.
*/
#include "opt_bus.h"
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/module.h>
#include <sys/bus.h>
#include <sys/rman.h>
#include <dev/ofw/ofw_bus.h>
#include <dev/ofw/ofw_bus_subr.h>
#include <machine/bus.h>
#include <arm/freescale/imx/imx_ccmvar.h>
/*
* Table of supported FDT compat strings.
*/
static struct ofw_compat_data compat_data[] = {
{"nop-usbphy", true},
{"usb-nop-xceiv", true},
{NULL, false},
};
struct usbphy_softc {
device_t dev;
u_int phy_num;
};
static int
usbphy_detach(device_t dev)
{
return (0);
}
static int
usbphy_attach(device_t dev)
{
struct usbphy_softc *sc;
sc = device_get_softc(dev);
/*
* Turn on the phy clocks.
*/
imx_ccm_usbphy_enable(dev);
return (0);
}
static int
usbphy_probe(device_t dev)
{
if (!ofw_bus_status_okay(dev))
return (ENXIO);
if (ofw_bus_search_compatible(dev, compat_data)->ocd_data != 0) {
device_set_desc(dev, "Freescale USB PHY");
return (BUS_PROBE_DEFAULT);
}
return (ENXIO);
}
static device_method_t usbphy_methods[] = {
/* Device interface */
DEVMETHOD(device_probe, usbphy_probe),
DEVMETHOD(device_attach, usbphy_attach),
DEVMETHOD(device_detach, usbphy_detach),
DEVMETHOD_END
};
static driver_t usbphy_driver = {
"usbphy",
usbphy_methods,
sizeof(struct usbphy_softc)
};
static devclass_t usbphy_devclass;
DRIVER_MODULE(usbphy, simplebus, usbphy_driver, usbphy_devclass, 0, 0);
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