deq.c revision 1.3 
1/*	$NetBSD: deq.c,v 1.3 2007/01/17 23:05:49 macallan Exp $	*/
2
3/*-
4 * Copyright (C) 2005 Michael Lorenz
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 *    notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 *    notice, this list of conditions and the following disclaimer in the
13 *    documentation and/or other materials provided with the distribution.
14 * 3. The name of the author may not be used to endorse or promote products
15 *    derived from this software without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
26 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 */
28
29/*
30 * a dummy device to attach to OF's deq node marking the TAS3004 audio mixer /
31 * equalizer chip, needed by snapper
32 */
33
34#include <sys/cdefs.h>
35__KERNEL_RCSID(0, "$NetBSD: deq.c,v 1.3 2007/01/17 23:05:49 macallan Exp $");
36
37#include <sys/param.h>
38#include <sys/systm.h>
39#include <sys/kernel.h>
40#include <sys/device.h>
41#include <sys/malloc.h>
42
43#include <uvm/uvm_extern.h>
44
45#include <dev/ofw/openfirm.h>
46#include <dev/i2c/i2cvar.h>
47
48#include <machine/autoconf.h>
49#include <macppc/dev/ki2cvar.h>
50#include <macppc/dev/deqvar.h>
51
52static void deq_attach(struct device *, struct device *, void *);
53static int deq_match(struct device *, struct cfdata *, void *);
54
55CFATTACH_DECL(deq, sizeof(struct deq_softc),
56    deq_match, deq_attach, NULL, NULL);
57
58int
59deq_match(parent, cf, aux)
60	struct device *parent;
61	struct cfdata *cf;
62	void *aux;
63{
64	struct ki2c_confargs *ka = aux;
65	char compat[32];
66
67	if (strcmp(ka->ka_name, "deq") != 0)
68		return 0;
69
70	memset(compat, 0, sizeof(compat));
71	if(OF_getprop(ka->ka_node, "i2c-address", compat, sizeof(compat)))
72		return 1;
73	return 0;
74}
75
76void
77deq_attach(parent, self, aux)
78	struct device *parent, *self;
79	void *aux;
80{
81	struct deq_softc *sc = (struct deq_softc *)self;
82	struct ki2c_confargs *ka = aux;
83	int node;
84
85	node = ka->ka_node;
86	sc->sc_node = node;
87	sc->sc_parent = parent;
88	sc->sc_address = ka->ka_addr & 0xfe;
89	sc->sc_i2c = ka->ka_tag;
90	printf(" Apple Digital Equalizer, addr 0x%x\n", sc->sc_address);
91}
92