2 * Copyright 2015 Alexander Kabaev <kan@FreeBSD.org>
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
28 * Ingenic JZ4780 NAND and External Memory Controller (NEMC) driver.
32 #include <sys/cdefs.h>
33 __FBSDID("$FreeBSD$");
35 #include <sys/param.h>
36 #include <sys/systm.h>
39 #include <sys/kernel.h>
40 #include <sys/module.h>
42 #include <sys/mutex.h>
43 #include <sys/resource.h>
46 #include <machine/bus.h>
48 #include <dev/fdt/fdt_common.h>
49 #include <dev/ofw/ofw_bus.h>
50 #include <dev/ofw/ofw_bus_subr.h>
52 struct jz4780_nand_softc {
54 struct resource *res[1];
57 static struct resource_spec jz4780_nand_spec[] = {
58 { SYS_RES_MEMORY, 0, RF_ACTIVE },
62 static int jz4780_nand_probe(device_t dev);
63 static int jz4780_nand_attach(device_t dev);
64 static int jz4780_nand_detach(device_t dev);
67 jz4780_nand_probe(device_t dev)
70 if (!ofw_bus_status_okay(dev))
73 if (!ofw_bus_is_compatible(dev, "ingenic,jz4780-nand"))
76 device_set_desc(dev, "Ingenic JZ4780 NAND Controller");
78 return (BUS_PROBE_DEFAULT);
82 jz4780_nand_attach(device_t dev)
84 struct jz4780_nand_softc *sc = device_get_softc(dev);
88 if (bus_alloc_resources(dev, jz4780_nand_spec, sc->res)) {
89 device_printf(dev, "could not allocate resources for device\n");
97 jz4780_nand_detach(device_t dev)
99 struct jz4780_nand_softc *sc = device_get_softc(dev);
101 bus_release_resources(dev, jz4780_nand_spec, sc->res);
105 static device_method_t jz4780_nand_methods[] = {
106 /* Device interface */
107 DEVMETHOD(device_probe, jz4780_nand_probe),
108 DEVMETHOD(device_attach, jz4780_nand_attach),
109 DEVMETHOD(device_detach, jz4780_nand_detach),
114 static driver_t jz4780_nand_driver = {
117 sizeof(struct jz4780_nand_softc),
120 static devclass_t jz4780_nand_devclass;
122 DRIVER_MODULE(jz4780_nand, simplebus, jz4780_nand_driver,
123 jz4780_nand_devclass, 0, 0);