/*-
* Copyright 2015 Alexander Kabaev <kan@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.
*/
/*
* Ingenic JZ4780 NAND and External Memory Controller (NEMC) driver.
*
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/conf.h>
#include <sys/bus.h>
#include <sys/kernel.h>
#include <sys/module.h>
#include <sys/lock.h>
#include <sys/mutex.h>
#include <sys/resource.h>
#include <sys/rman.h>
#include <machine/bus.h>
#include <dev/fdt/fdt_common.h>
#include <dev/ofw/ofw_bus.h>
#include <dev/ofw/ofw_bus_subr.h>
struct jz4780_nand_softc {
device_t dev;
struct resource *res[1];
};
static struct resource_spec jz4780_nand_spec[] = {
{ SYS_RES_MEMORY, 0, RF_ACTIVE },
{ -1, 0 }
};
static int jz4780_nand_probe(device_t dev);
static int jz4780_nand_attach(device_t dev);
static int jz4780_nand_detach(device_t dev);
static int
jz4780_nand_probe(device_t dev)
{
if (!ofw_bus_status_okay(dev))
return (ENXIO);
if (!ofw_bus_is_compatible(dev, "ingenic,jz4780-nand"))
return (ENXIO);
device_set_desc(dev, "Ingenic JZ4780 NAND Controller");
return (BUS_PROBE_DEFAULT);
}
static int
jz4780_nand_attach(device_t dev)
{
struct jz4780_nand_softc *sc = device_get_softc(dev);
sc->dev = dev;
if (bus_alloc_resources(dev, jz4780_nand_spec, sc->res)) {
device_printf(dev, "could not allocate resources for device\n");
return (ENXIO);
}
return (0);
}
static int
jz4780_nand_detach(device_t dev)
{
struct jz4780_nand_softc *sc = device_get_softc(dev);
bus_release_resources(dev, jz4780_nand_spec, sc->res);
return (0);
}
static device_method_t jz4780_nand_methods[] = {
/* Device interface */
DEVMETHOD(device_probe, jz4780_nand_probe),
DEVMETHOD(device_attach, jz4780_nand_attach),
DEVMETHOD(device_detach, jz4780_nand_detach),
DEVMETHOD_END
};
static driver_t jz4780_nand_driver = {
"nand",
jz4780_nand_methods,
sizeof(struct jz4780_nand_softc),
};
static devclass_t jz4780_nand_devclass;
DRIVER_MODULE(jz4780_nand, simplebus, jz4780_nand_driver,
jz4780_nand_devclass, 0, 0);
