deq.c revision 1.9 
1/*	$NetBSD: deq.c,v 1.9 2017/09/15 21:31:25 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 1.9 2017/09/15 21:31:25 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 <dev/ofw/openfirm.h>
44#include <dev/i2c/i2cvar.h>
45
46#include <machine/autoconf.h>
47#include <macppc/dev/ki2cvar.h>
48#include <macppc/dev/deqvar.h>
49
50static void deq_attach(device_t, device_t, void *);
51static int deq_match(device_t, struct cfdata *, void *);
52
53CFATTACH_DECL_NEW(deq, sizeof(struct deq_softc),
54    deq_match, deq_attach, NULL, NULL);
55
56int
57deq_match(device_t parent, struct cfdata *cf, void *aux)
58{
59	struct ki2c_confargs *ka = aux;
60	char buf[32];
61
62	if (strcmp(ka->ka_name, "deq") == 0) {
63		if (OF_getprop(ka->ka_node, "i2c-address", buf, sizeof(buf)))
64			return 1;
65	} else if (strcmp(ka->ka_name, "codec") == 0) {
66		if (OF_getprop(ka->ka_node, "compatible", buf, sizeof(buf)))
67			if (strcmp(buf, "tas3004") == 0)
68				return 1;
69	}
70	return 0;
71}
72
73void
74deq_attach(device_t parent, device_t self, void *aux)
75{
76	struct deq_softc *sc = device_private(self);
77	struct ki2c_confargs *ka = aux;
78	int node;
79
80	sc->sc_dev = self;
81	node = ka->ka_node;
82	sc->sc_node = node;
83	sc->sc_parent = parent;
84	sc->sc_address = (ka->ka_addr & 0x7f);
85	sc->sc_i2c = ka->ka_tag;
86	aprint_normal(" Apple Digital Equalizer, addr 0x%x\n", sc->sc_address);
87}
88