joy_ofisa.c revision 1.13 
1/*	$NetBSD: joy_ofisa.c,v 1.13 2008/03/26 18:27:07 xtraeme 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 * 3. All advertising materials mentioning features or use of this software
19 *    must display the following acknowledgement:
20 *        This product includes software developed by the NetBSD
21 *        Foundation, Inc. and its contributors.
22 * 4. Neither the name of The NetBSD Foundation nor the names of its
23 *    contributors may be used to endorse or promote products derived
24 *    from this software without specific prior written permission.
25 *
26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
29 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
36 * POSSIBILITY OF SUCH DAMAGE.
37 */
38
39#include <sys/cdefs.h>
40__KERNEL_RCSID(0, "$NetBSD: joy_ofisa.c,v 1.13 2008/03/26 18:27:07 xtraeme Exp $");
41
42#include <sys/param.h>
43#include <sys/systm.h>
44#include <sys/kernel.h>
45#include <sys/device.h>
46
47#include <sys/bus.h>
48
49#include <dev/ofw/openfirm.h>
50#include <dev/isa/isavar.h>
51#include <dev/ofisa/ofisavar.h>
52
53#include <dev/ic/joyvar.h>
54
55#define	JOY_NPORTS	1	/* XXX should be in a header file */
56
57static int	joy_ofisa_match(device_t, cfdata_t, void *);
58static void	joy_ofisa_attach(device_t, device_t, void *);
59
60CFATTACH_DECL_NEW(joy_ofisa, sizeof(struct joy_softc),
61    joy_ofisa_match, joy_ofisa_attach, NULL, NULL);
62
63static int
64joy_ofisa_match(device_t parent, cfdata_t match, void *aux)
65{
66	struct ofisa_attach_args *aa = aux;
67	static const char *const compatible_strings[] = {
68		"pnpPNP,b02f",			/* generic joystick */
69		NULL,
70	};
71	int rv = 0;
72
73	if (of_compatible(aa->oba.oba_phandle, compatible_strings) != -1)
74		rv = 1;
75	return rv;
76}
77
78static void
79joy_ofisa_attach(device_t parent, device_t self, void *aux)
80{
81	struct joy_softc *sc = device_private(self);
82	struct ofisa_attach_args *aa = aux;
83	struct ofisa_reg_desc reg;
84	char *model = NULL;
85	int n;
86
87	/*
88	 * We're living on an OFW.  We have to ask the OFW what our
89	 * register property looks like.
90	 *
91	 * We expect:
92	 *
93	 *	1 i/o register region
94	 */
95
96	n = ofisa_reg_get(aa->oba.oba_phandle, &reg, 1);
97	if (n != 1) {
98		aprint_error(": error getting register data\n");
99		return;
100	}
101	if (reg.type != OFISA_REG_TYPE_IO) {
102		aprint_error(": register type not i/o\n");
103		return;
104	}
105	if (reg.len != JOY_NPORTS) {
106		aprint_error(": weird register size (%lu, expected %d)\n",
107		    (unsigned long)reg.len, JOY_NPORTS);
108		return;
109	}
110
111	sc->sc_iot = aa->iot;
112	sc->sc_dev = self;
113
114	if (bus_space_map(sc->sc_iot, reg.addr, reg.len, 0, &sc->sc_ioh)) {
115		aprint_error(": unable to map register space\n");
116		return;
117	}
118
119	n = OF_getproplen(aa->oba.oba_phandle, "model");
120	if (n > 0) {
121		model = alloca(n);
122		if (OF_getprop(aa->oba.oba_phandle, "model", model, n) != n)
123			model = NULL;	/* safe; alloca */
124	}
125	if (model != NULL)
126		aprint_normal(": %s", model);
127	aprint_normal("\n");
128
129	joyattach(sc);
130}
131