1 /*-
2 * SPDX-License-Identifier: BSD-2-Clause
3 *
4 * Copyright (c) 2019 Michal Meloun <mmel@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
43 static struct ofw_compat_data compat_data[] = {
44 {"rockchip,rk3288-pmu", 1},
45 {NULL, 0}
46 };
47
48 static int
rk_pmu_probe(device_t dev)49 rk_pmu_probe(device_t dev)
50 {
51
52 if (!ofw_bus_status_okay(dev))
53 return (ENXIO);
54 if (ofw_bus_search_compatible(dev, compat_data)->ocd_data == 0)
55 return (ENXIO);
56
57 device_set_desc(dev, "RockChip Power Management Unit");
58 return (BUS_PROBE_DEFAULT);
59 }
60
61 static device_method_t rk_pmu_methods[] = {
62 DEVMETHOD(device_probe, rk_pmu_probe),
63
64 DEVMETHOD_END
65 };
66
67
68 DEFINE_CLASS_1(rk_pmu, rk_pmu_driver, rk_pmu_methods,
69 sizeof(struct simple_mfd_softc), simple_mfd_driver);
70
71 EARLY_DRIVER_MODULE(rk_pmu, simplebus, rk_pmu_driver, 0, 0,
72 BUS_PASS_BUS + BUS_PASS_ORDER_MIDDLE);
73 MODULE_VERSION(rk_pmu, 1);
74