2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
4 * Copyright (c) 2013 Ganbold Tsagaankhuu <ganbold@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 /* PMU for Rockchip RK30xx */
31 #include <sys/cdefs.h>
32 __FBSDID("$FreeBSD$");
34 #include <sys/param.h>
35 #include <sys/systm.h>
37 #include <sys/kernel.h>
38 #include <sys/module.h>
39 #include <sys/malloc.h>
41 #include <sys/timeet.h>
42 #include <sys/timetc.h>
43 #include <sys/watchdog.h>
44 #include <machine/bus.h>
45 #include <machine/cpu.h>
46 #include <machine/intr.h>
48 #include <dev/ofw/openfirm.h>
49 #include <dev/ofw/ofw_bus.h>
50 #include <dev/ofw/ofw_bus_subr.h>
52 #include <machine/bus.h>
54 #include "rk30xx_pmu.h"
56 struct rk30_pmu_softc {
59 bus_space_handle_t bsh;
62 static struct rk30_pmu_softc *rk30_pmu_sc = NULL;
64 #define pmu_read_4(sc, reg) \
65 bus_space_read_4((sc)->bst, (sc)->bsh, (reg))
66 #define pmu_write_4(sc, reg, val) \
67 bus_space_write_4((sc)->bst, (sc)->bsh, (reg), (val))
70 rk30_pmu_probe(device_t dev)
73 if (!ofw_bus_status_okay(dev))
76 if (ofw_bus_is_compatible(dev, "rockchip,rk30xx-pmu")) {
77 device_set_desc(dev, "RK30XX PMU");
78 return(BUS_PROBE_DEFAULT);
85 rk30_pmu_attach(device_t dev)
87 struct rk30_pmu_softc *sc = device_get_softc(dev);
93 sc->res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid, RF_ACTIVE);
95 device_printf(dev, "could not allocate resource\n");
99 sc->bst = rman_get_bustag(sc->res);
100 sc->bsh = rman_get_bushandle(sc->res);
107 static device_method_t rk30_pmu_methods[] = {
108 DEVMETHOD(device_probe, rk30_pmu_probe),
109 DEVMETHOD(device_attach, rk30_pmu_attach),
113 static driver_t rk30_pmu_driver = {
116 sizeof(struct rk30_pmu_softc),
119 static devclass_t rk30_pmu_devclass;
121 DRIVER_MODULE(rk30_pmu, simplebus, rk30_pmu_driver, rk30_pmu_devclass, 0, 0);
124 rk30_pmu_gpio_pud(uint32_t pin, uint32_t state)
128 offset = PMU_GPIO0A_PULL + ((pin / 8) * 4);
130 pmu_write_4(rk30_pmu_sc, offset, (0x3 << (16 + pin)) | (state << pin));