1/*-
2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
3 *
4 * Copyright (c) 2020 Amazon.com, Inc. or its affiliates.
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 *    notice, this list of conditions and the following disclaimer in the
14 *    documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 */
28
29#include "opt_acpi.h"
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 <machine/intr.h>
43
44#include <contrib/dev/acpica/include/acpi.h>
45#include <contrib/dev/acpica/include/accommon.h>
46
47#include <dev/acpica/acpivar.h>
48#include <dev/gpio/gpiobusvar.h>
49
50#include "pl061.h"
51
52static char *gpio_ids[] = { "ARMH0061", NULL };
53
54static int
55pl061_acpi_probe(device_t dev)
56{
57	int rv;
58
59	if (acpi_disabled("gpio"))
60		return (ENXIO);
61
62	rv = ACPI_ID_PROBE(device_get_parent(dev), dev, gpio_ids, NULL);
63
64	if (rv <= 0)
65		device_set_desc(dev, "Arm PL061 GPIO Controller");
66
67	return (rv);
68}
69
70static int
71pl061_acpi_attach(device_t dev)
72{
73	int error;
74
75	error = pl061_attach(dev);
76	if (error != 0)
77		return (error);
78
79	if (!intr_pic_register(dev, ACPI_GPIO_XREF)) {
80		device_printf(dev, "couldn't register PIC\n");
81		pl061_detach(dev);
82		error = ENXIO;
83	}
84
85	return (error);
86}
87
88static device_method_t pl061_acpi_methods[] = {
89	/* Device interface */
90	DEVMETHOD(device_probe,		pl061_acpi_probe),
91	DEVMETHOD(device_attach,	pl061_acpi_attach),
92
93	DEVMETHOD_END
94};
95
96DEFINE_CLASS_1(gpio, pl061_acpi_driver, pl061_acpi_methods,
97    sizeof(struct pl061_softc), pl061_driver);
98
99static devclass_t pl061_devclass;
100
101EARLY_DRIVER_MODULE(pl061, acpi, pl061_acpi_driver, pl061_devclass, NULL, NULL,
102    BUS_PASS_INTERRUPT + BUS_PASS_ORDER_LATE);
103MODULE_DEPEND(pl061, acpi, 1, 1, 1);
104MODULE_DEPEND(pl061, gpiobus, 1, 1, 1);
105