1/*-
2 * SPDX-License-Identifier: BSD-2-Clause
3 *
4 * Copyright (c) 2018 Emmanuel Vadot <manu@FreeBSD.org>
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 *    notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 *    notice, this list of conditions and the following disclaimer in the
13 *    documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25 * SUCH DAMAGE.
26 */
27
28#include <sys/param.h>
29#include <sys/bus.h>
30#include <sys/kernel.h>
31#include <sys/module.h>
32#include <sys/mutex.h>
33#include <sys/rman.h>
34#include <machine/bus.h>
35
36#include <dev/ofw/openfirm.h>
37#include <dev/ofw/ofw_bus.h>
38#include <dev/ofw/ofw_bus_subr.h>
39
40#include <dev/syscon/syscon.h>
41#include <dev/fdt/simple_mfd.h>
42
43static struct ofw_compat_data compat_data[] = {
44	{"rockchip,rk3288-grf", 1},
45	{"rockchip,rk3328-grf", 1},
46	{"rockchip,rk3399-grf", 1},
47	{"rockchip,rk3399-pmugrf", 1},
48	{"rockchip,rk3568-grf", 1},
49	{"rockchip,rk3568-pmugrf", 1},
50	{"rockchip,rk3568-usb2phy-grf", 1},
51	{"rockchip,rk3566-pipe-grf", 1},
52	{"rockchip,rk3568-pipe-grf", 1},
53	{"rockchip,rk3568-pipe-phy-grf", 1},
54	{"rockchip,rk3568-pcie3-phy-grf", 1},
55	{NULL,             0}
56};
57
58static int
59rk_grf_probe(device_t dev)
60{
61
62	if (!ofw_bus_status_okay(dev))
63		return (ENXIO);
64	if (ofw_bus_search_compatible(dev, compat_data)->ocd_data == 0)
65		return (ENXIO);
66
67	device_set_desc(dev, "RockChip General Register Files");
68	return (BUS_PROBE_DEFAULT);
69}
70
71static device_method_t rk_grf_methods[] = {
72	DEVMETHOD(device_probe, rk_grf_probe),
73
74	DEVMETHOD_END
75};
76
77DEFINE_CLASS_1(rk_grf, rk_grf_driver, rk_grf_methods,
78    sizeof(struct simple_mfd_softc), simple_mfd_driver);
79
80EARLY_DRIVER_MODULE(rk_grf, simplebus, rk_grf_driver, 0, 0,
81    BUS_PASS_BUS + BUS_PASS_ORDER_MIDDLE);
82MODULE_VERSION(rk_grf, 1);
83