ug_acpi.c revision 1.6 
1/* $NetBSD: ug_acpi.c,v 1.6 2010/03/05 14:00:17 jruoho Exp $ */
2
3/*
4 * Copyright (c) 2007 Mihai Chelaru <kefren@netbsd.ro>
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#include <sys/cdefs.h>
29__KERNEL_RCSID(0, "$NetBSD: ug_acpi.c,v 1.6 2010/03/05 14:00:17 jruoho Exp $");
30
31#include <sys/param.h>
32#include <sys/device.h>
33#include <sys/systm.h>
34
35#include <dev/acpi/acpivar.h>
36
37#include <dev/ic/ugreg.h>
38#include <dev/ic/ugvar.h>
39
40/* autoconf(9) functions */
41static int	ug_acpi_match(device_t, cfdata_t, void *);
42static void	ug_acpi_attach(device_t, device_t, void *);
43
44CFATTACH_DECL_NEW(ug_acpi, sizeof(struct ug_softc), ug_acpi_match,
45    ug_acpi_attach, NULL, NULL);
46
47/*
48 * Supported devices
49 * XXX: only uGuru 2005 for now
50 */
51
52static const char* const ug_acpi_ids[] = {
53	"ABT2005",	/* uGuru 2005 */
54	NULL
55};
56
57static int
58ug_acpi_match(device_t parent, cfdata_t match, void *aux)
59{
60	struct acpi_attach_args *aa = aux;
61
62	if (aa->aa_node->ad_type != ACPI_TYPE_DEVICE)
63		return 0;
64
65	return acpi_match_hid(aa->aa_node->ad_devinfo, ug_acpi_ids);
66}
67
68static void
69ug_acpi_attach(device_t parent, device_t self, void *aux)
70{
71	struct ug_softc *sc = device_private(self);
72	struct acpi_attach_args *aa = aux;
73	struct acpi_resources res;
74	struct acpi_io *io;
75	bus_space_handle_t ioh;
76	ACPI_STATUS rv;
77
78	/* parse resources */
79	rv = acpi_resource_parse(self, aa->aa_node->ad_handle, "_CRS",
80	    &res, &acpi_resource_parse_ops_default);
81	if (ACPI_FAILURE(rv))
82		return;
83
84	/* find our i/o registers */
85	io = acpi_res_io(&res, 0);
86	if (io == NULL) {
87		aprint_error_dev(self,
88		    "unable to find i/o register resource\n");
89		acpi_resource_cleanup(&res);
90		return;
91	}
92
93	if (bus_space_map(aa->aa_iot, io->ar_base, io->ar_length,
94	    0, &ioh)) {
95		aprint_error_dev(self, "can't map i/o space\n");
96		acpi_resource_cleanup(&res);
97		return;
98	}
99
100	aprint_normal("%s", device_xname(self));
101
102	sc->version = 2;	/* uGuru 2005 */
103	sc->sc_ioh = ioh;
104	sc->sc_iot = aa->aa_iot;
105	ug2_attach(self);
106
107	acpi_resource_cleanup(&res);
108}
109