2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
4 * Copyright (C) 2002 Benno Rice.
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 Benno Rice ``AS IS'' AND ANY EXPRESS OR
17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
19 * IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
20 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
21 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
22 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
23 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
24 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
25 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
32 #include <sys/param.h>
33 #include <sys/systm.h>
35 #include <sys/kernel.h>
36 #include <sys/module.h>
37 #include <sys/malloc.h>
39 #include <machine/bus.h>
42 #include <machine/resource.h>
44 #include <dev/ofw/ofw_bus.h>
45 #include <dev/ofw/openfirm.h>
47 #include <powerpc/powermac/maciovar.h>
49 struct pswitch_softc {
51 struct resource *sc_irq;
55 static int pswitch_probe(device_t);
56 static int pswitch_attach(device_t);
58 static int pswitch_intr(void *);
60 static device_method_t pswitch_methods[] = {
61 /* Device interface */
62 DEVMETHOD(device_probe, pswitch_probe),
63 DEVMETHOD(device_attach, pswitch_attach),
67 static driver_t pswitch_driver = {
70 sizeof(struct pswitch_softc)
73 static devclass_t pswitch_devclass;
75 EARLY_DRIVER_MODULE(pswitch, macgpio, pswitch_driver, pswitch_devclass,
76 0, 0, BUS_PASS_RESOURCE);
79 pswitch_probe(device_t dev)
81 const char *type = ofw_bus_get_type(dev);
83 if (strcmp(type, "programmer-switch") != 0)
86 device_set_desc(dev, "GPIO Programmer's Switch");
91 pswitch_attach(device_t dev)
93 struct pswitch_softc *sc;
95 sc = device_get_softc(dev);
98 sc->sc_irq = bus_alloc_resource_any(dev, SYS_RES_IRQ,
99 &sc->sc_irq_rid, RF_ACTIVE);
100 if (sc->sc_irq == NULL) {
101 device_printf(dev, "could not allocate interrupt\n");
105 if (bus_setup_intr(dev, sc->sc_irq, INTR_TYPE_MISC | INTR_EXCL,
106 pswitch_intr, NULL, dev, &sc->sc_ih) != 0) {
107 device_printf(dev, "could not setup interrupt\n");
108 bus_release_resource(dev, SYS_RES_IRQ, sc->sc_irq_rid,
117 pswitch_intr(void *arg)
123 kdb_enter(KDB_WHY_POWERPC, device_get_nameunit(dev));
124 return (FILTER_HANDLED);