joy_ofisa.c revision 1.14 
1/*	$NetBSD: joy_ofisa.c,v 1.14 2008/04/28 20:23:54 martin Exp $	*/
2
3/*-
4 * Copyright (c) 1996, 1998 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Jason R. Thorpe.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 *    notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 *    notice, this list of conditions and the following disclaimer in the
17 *    documentation and/or other materials provided with the distribution.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29 * POSSIBILITY OF SUCH DAMAGE.
30 */
31
32#include <sys/cdefs.h>
33__KERNEL_RCSID(0, "$NetBSD: joy_ofisa.c,v 1.14 2008/04/28 20:23:54 martin Exp $");
34
35#include <sys/param.h>
36#include <sys/systm.h>
37#include <sys/kernel.h>
38#include <sys/device.h>
39
40#include <sys/bus.h>
41
42#include <dev/ofw/openfirm.h>
43#include <dev/isa/isavar.h>
44#include <dev/ofisa/ofisavar.h>
45
46#include <dev/ic/joyvar.h>
47
48#define	JOY_NPORTS	1	/* XXX should be in a header file */
49
50static int	joy_ofisa_match(device_t, cfdata_t, void *);
51static void	joy_ofisa_attach(device_t, device_t, void *);
52
53CFATTACH_DECL_NEW(joy_ofisa, sizeof(struct joy_softc),
54    joy_ofisa_match, joy_ofisa_attach, NULL, NULL);
55
56static int
57joy_ofisa_match(device_t parent, cfdata_t match, void *aux)
58{
59	struct ofisa_attach_args *aa = aux;
60	static const char *const compatible_strings[] = {
61		"pnpPNP,b02f",			/* generic joystick */
62		NULL,
63	};
64	int rv = 0;
65
66	if (of_compatible(aa->oba.oba_phandle, compatible_strings) != -1)
67		rv = 1;
68	return rv;
69}
70
71static void
72joy_ofisa_attach(device_t parent, device_t self, void *aux)
73{
74	struct joy_softc *sc = device_private(self);
75	struct ofisa_attach_args *aa = aux;
76	struct ofisa_reg_desc reg;
77	char *model = NULL;
78	int n;
79
80	/*
81	 * We're living on an OFW.  We have to ask the OFW what our
82	 * register property looks like.
83	 *
84	 * We expect:
85	 *
86	 *	1 i/o register region
87	 */
88
89	n = ofisa_reg_get(aa->oba.oba_phandle, &reg, 1);
90	if (n != 1) {
91		aprint_error(": error getting register data\n");
92		return;
93	}
94	if (reg.type != OFISA_REG_TYPE_IO) {
95		aprint_error(": register type not i/o\n");
96		return;
97	}
98	if (reg.len != JOY_NPORTS) {
99		aprint_error(": weird register size (%lu, expected %d)\n",
100		    (unsigned long)reg.len, JOY_NPORTS);
101		return;
102	}
103
104	sc->sc_iot = aa->iot;
105	sc->sc_dev = self;
106
107	if (bus_space_map(sc->sc_iot, reg.addr, reg.len, 0, &sc->sc_ioh)) {
108		aprint_error(": unable to map register space\n");
109		return;
110	}
111
112	n = OF_getproplen(aa->oba.oba_phandle, "model");
113	if (n > 0) {
114		model = alloca(n);
115		if (OF_getprop(aa->oba.oba_phandle, "model", model, n) != n)
116			model = NULL;	/* safe; alloca */
117	}
118	if (model != NULL)
119		aprint_normal(": %s", model);
120	aprint_normal("\n");
121
122	joyattach(sc);
123}
124