xref: /freebsd/sys/arm/mv/mv_cp110_icu_bus.c (revision 56b17de1e8360fe131d425de20b5e75ff3ea897c)
1 /*-
2  * SPDX-License-Identifier: BSD-2-Clause
3  *
4  * Copyright (c) 2019 Michal Meloun <mmel@FreeBSD.org>
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 <sys/param.h>
30 #include <sys/bus.h>
31 #include <sys/kernel.h>
32 #include <sys/module.h>
33 #include <sys/mutex.h>
34 #include <sys/rman.h>
35 #include <machine/bus.h>
36 
37 #include <dev/ofw/openfirm.h>
38 #include <dev/ofw/ofw_bus.h>
39 #include <dev/ofw/ofw_bus_subr.h>
40 
41 #include <dev/syscon/syscon.h>
42 #include <dev/fdt/simple_mfd.h>
43 
44 static struct ofw_compat_data compat_data[] = {
45 	{"marvell,cp110-icu",	1},
46 	{NULL,			0}
47 };
48 
49 static int
50 mv_cp110_icu_bus_probe(device_t dev)
51 {
52 
53 	if (!ofw_bus_status_okay(dev))
54 		return (ENXIO);
55 	if (ofw_bus_search_compatible(dev, compat_data)->ocd_data == 0)
56 		return (ENXIO);
57 
58 	device_set_desc(dev, "Marvell Interrupt Consolidation Unit Bus");
59 	return (BUS_PROBE_DEFAULT);
60 }
61 
62 static device_method_t mv_cp110_icu_bus_methods[] = {
63 	DEVMETHOD(device_probe, mv_cp110_icu_bus_probe),
64 
65 	DEVMETHOD_END
66 };
67 
68 DEFINE_CLASS_1(mv_cp110_icu_bus, mv_cp110_icu_bus_driver,
69     mv_cp110_icu_bus_methods, sizeof(struct simple_mfd_softc),
70     simple_mfd_driver);
71 
72 EARLY_DRIVER_MODULE(mv_cp110_icu_bus, simplebus, mv_cp110_icu_bus_driver, 0, 0,
73     BUS_PASS_INTERRUPT);
74 MODULE_VERSION(mv_cp110_icu_bus, 1);
75