joy_acpi.c revision 1.11 
1/* $NetBSD: joy_acpi.c,v 1.11 2011/11/23 23:07:31 jmcneill Exp $ */
2
3/*
4 * Copyright (c) 2002 Jared D. McNeill <jmcneill@invisible.ca>
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 * 2. The name of the author may not be used to endorse or promote products
13 *    derived from this software without specific prior written permission.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
20 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
21 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
22 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
23 * 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/*
29 * ACPI joy(4) attachment based in lpt_acpi.c by Jared D. McNeill.
30 */
31
32#include <sys/cdefs.h>
33__KERNEL_RCSID(0, "$NetBSD: joy_acpi.c,v 1.11 2011/11/23 23:07:31 jmcneill Exp $");
34
35#include <sys/param.h>
36#include <sys/device.h>
37#include <sys/systm.h>
38
39#include <dev/acpi/acpivar.h>
40
41#include <dev/ic/joyvar.h>
42
43static int	joy_acpi_match(device_t, cfdata_t, void *);
44static void	joy_acpi_attach(device_t, device_t, void *);
45
46struct joy_acpi_softc {
47	struct joy_softc sc_joy;
48	kmutex_t sc_lock;
49};
50
51CFATTACH_DECL_NEW(joy_acpi, sizeof(struct joy_acpi_softc), joy_acpi_match,
52    joy_acpi_attach, NULL, NULL);
53
54/*
55 * Supported device IDs
56 */
57
58static const char * const joy_acpi_ids[] = {
59	"PNPB02F",	/* Joystick/Game port */
60	NULL
61};
62
63/*
64 * joy_acpi_match: autoconf(9) match routine
65 */
66static int
67joy_acpi_match(device_t parent, cfdata_t match, void *aux)
68{
69	struct acpi_attach_args *aa = aux;
70
71	if (aa->aa_node->ad_type != ACPI_TYPE_DEVICE)
72		return 0;
73
74	return acpi_match_hid(aa->aa_node->ad_devinfo, joy_acpi_ids);
75}
76
77/*
78 * joy_acpi_attach: autoconf(9) attach routine
79 */
80static void
81joy_acpi_attach(device_t parent, device_t self, void *aux)
82{
83	struct joy_acpi_softc *asc = device_private(self);
84	struct joy_softc *sc = &asc->sc_joy;
85	struct acpi_attach_args *aa = aux;
86	struct acpi_resources res;
87	struct acpi_io *io;
88	ACPI_STATUS rv;
89
90	sc->sc_dev = self;
91
92	/* parse resources */
93	rv = acpi_resource_parse(sc->sc_dev, aa->aa_node->ad_handle, "_CRS",
94	    &res, &acpi_resource_parse_ops_default);
95	if (ACPI_FAILURE(rv))
96		return;
97
98	/* find our i/o registers */
99	io = acpi_res_io(&res, 0);
100	if (io == NULL) {
101		aprint_error_dev(self,
102		    "unable to find i/o register resource\n");
103		goto out;
104	}
105
106	sc->sc_iot = aa->aa_iot;
107	if (bus_space_map(sc->sc_iot, io->ar_base, io->ar_length,
108		    0, &sc->sc_ioh)) {
109		aprint_error_dev(self, "can't map i/o space\n");
110		goto out;
111	}
112
113	mutex_init(&asc->sc_lock, MUTEX_DEFAULT, IPL_NONE);
114	sc->sc_lock = &asc->sc_lock;
115
116	joyattach(sc);
117
118 out:
119	acpi_resource_cleanup(&res);
120}
121