2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
4 * Copyright (c) 2018 Emmanuel Vadot <manu@FreeBSD.org>
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
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.
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
29 #include <sys/cdefs.h>
30 __FBSDID("$FreeBSD$");
32 #include <sys/param.h>
34 #include <sys/kernel.h>
35 #include <sys/module.h>
36 #include <sys/mutex.h>
38 #include <machine/bus.h>
40 #include <dev/ofw/openfirm.h>
41 #include <dev/ofw/ofw_bus.h>
42 #include <dev/ofw/ofw_bus_subr.h>
44 #include <dev/extres/syscon/syscon.h>
45 #include <dev/extres/syscon/syscon_generic.h>
49 static struct ofw_compat_data compat_data[] = {
50 #ifdef SOC_ROCKCHIP_RK3328
51 {"rockchip,rk3328-grf", 1},
57 rk_grf_probe(device_t dev)
60 if (!ofw_bus_status_okay(dev))
62 if (ofw_bus_search_compatible(dev, compat_data)->ocd_data == 0)
65 device_set_desc(dev, "RockChip General Register Files");
66 return (BUS_PROBE_DEFAULT);
69 static device_method_t rk_grf_methods[] = {
70 DEVMETHOD(device_probe, rk_grf_probe),
75 DEFINE_CLASS_1(rk_grf, rk_grf_driver, rk_grf_methods,
76 sizeof(struct syscon_generic_softc), syscon_generic_driver);
78 static devclass_t rk_grf_devclass;
79 EARLY_DRIVER_MODULE(rk_grf, simplebus, rk_grf_driver, rk_grf_devclass,
80 0, 0, BUS_PASS_BUS + BUS_PASS_ORDER_MIDDLE);
81 MODULE_VERSION(rk_grf, 1);