1/*-
2 * SPDX-License-Identifier: BSD-2-Clause
3 *
4 * Copyright (c) 2020 Andrew Turner
5 *
6 * This work was supported by Innovate UK project 105694, "Digital Security
7 * by Design (DSbD) Technology Platform Prototype".
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
11 * are met:
12 * 1. Redistributions of source code must retain the above copyright
13 *    notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 *    notice, this list of conditions and the following disclaimer in the
16 *    documentation and/or other materials provided with the distribution.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
21 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
28 * SUCH DAMAGE.
29 */
30
31#include <sys/cdefs.h>
32__FBSDID("$FreeBSD$");
33
34#include <sys/param.h>
35#include <sys/systm.h>
36#include <sys/bus.h>
37#include <sys/kernel.h>
38#include <sys/module.h>
39#include <sys/lock.h>
40#include <sys/mutex.h>
41
42#include <dev/ofw/openfirm.h>
43#include <dev/ofw/ofw_bus.h>
44#include <dev/ofw/ofw_bus_subr.h>
45
46#include <dev/gpio/gpiobusvar.h>
47
48#include "pl061.h"
49
50static int
51pl061_fdt_probe(device_t dev)
52{
53	if (!ofw_bus_status_okay(dev))
54		return (ENXIO);
55
56	if (!ofw_bus_is_compatible(dev, "arm,pl061"))
57		return (ENXIO);
58
59	device_set_desc(dev, "Arm PL061 GPIO Controller");
60
61	return (BUS_PROBE_DEFAULT);
62}
63
64static int
65pl061_fdt_attach(device_t dev)
66{
67	int error;
68
69	error = pl061_attach(dev);
70	if (error != 0)
71		return (error);
72
73	if (!intr_pic_register(dev, OF_xref_from_node(ofw_bus_get_node(dev)))) {
74		device_printf(dev, "couldn't register PIC\n");
75		pl061_detach(dev);
76		error = ENXIO;
77	}
78
79	return (error);
80}
81
82static device_method_t pl061_fdt_methods[] = {
83	/* Device interface */
84	DEVMETHOD(device_probe,		pl061_fdt_probe),
85	DEVMETHOD(device_attach,	pl061_fdt_attach),
86
87	DEVMETHOD_END
88};
89
90DEFINE_CLASS_1(gpio, pl061_fdt_driver, pl061_fdt_methods,
91    sizeof(struct pl061_softc), pl061_driver);
92
93static devclass_t pl061_devclass;
94
95EARLY_DRIVER_MODULE(pl061, ofwbus, pl061_fdt_driver, pl061_devclass, NULL, NULL,
96    BUS_PASS_INTERRUPT + BUS_PASS_ORDER_LATE);
97MODULE_DEPEND(pl061, gpiobus, 1, 1, 1);
98