deq.c revision 1.5 
1/*	$NetBSD: deq.c,v 1.5 2009/03/14 15:36:09 dsl 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 1.5 2009/03/14 15:36:09 dsl 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(device_t, device_t, void *);
53static int deq_match(device_t, struct cfdata *, void *);
54
55CFATTACH_DECL_NEW(deq, sizeof(struct deq_softc),
56    deq_match, deq_attach, NULL, NULL);
57
58int
59deq_match(device_t parent, struct cfdata *cf, void *aux)
60{
61	struct ki2c_confargs *ka = aux;
62	char compat[32];
63
64	if (strcmp(ka->ka_name, "deq") != 0)
65		return 0;
66
67	memset(compat, 0, sizeof(compat));
68	if(OF_getprop(ka->ka_node, "i2c-address", compat, sizeof(compat)))
69		return 1;
70	return 0;
71}
72
73void
74deq_attach(parent, self, aux)
75	device_t parent, self;
76	void *aux;
77{
78	struct deq_softc *sc = device_private(self);
79	struct ki2c_confargs *ka = aux;
80	int node;
81
82	sc->sc_dev = self;
83	node = ka->ka_node;
84	sc->sc_node = node;
85	sc->sc_parent = parent;
86	sc->sc_address = ka->ka_addr & 0xfe;
87	sc->sc_i2c = ka->ka_tag;
88	printf(" Apple Digital Equalizer, addr 0x%x\n", sc->sc_address);
89}
90