deq.c revision 1.14 
1/*	$NetBSD: deq.c,v 1.14 2018/06/16 21:22:13 thorpej 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 1.14 2018/06/16 21:22:13 thorpej 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/deqvar.h>
48
49static void deq_attach(device_t, device_t, void *);
50static int deq_match(device_t, struct cfdata *, void *);
51
52CFATTACH_DECL_NEW(deq, sizeof(struct deq_softc),
53    deq_match, deq_attach, NULL, NULL);
54
55static const char * deq_compats[] = {
56	"deq",
57	"tas3004",
58	"pcm3052",
59	"cs8416",
60	"codec",
61	NULL
62};
63
64int
65deq_match(device_t parent, struct cfdata *cf, void *aux)
66{
67	struct i2c_attach_args *ia = aux;
68	int match_result;
69
70	if (iic_use_direct_match(ia, cf, deq_compats, &match_result))
71		return match_result;
72
73	/* This driver is direct-config only. */
74
75	return 0;
76}
77
78void
79deq_attach(device_t parent, device_t self, void *aux)
80{
81	struct deq_softc *sc = device_private(self);
82	struct i2c_attach_args *ia = aux;
83	char name[256];
84
85	sc->sc_dev = self;
86	sc->sc_node = ia->ia_cookie;
87	sc->sc_parent = parent;
88	sc->sc_address = ia->ia_addr;
89	sc->sc_i2c = ia->ia_tag;
90	if (OF_getprop(sc->sc_node, "compatible", name, 256) <= 0) {
91		/* deq has no 'compatible' on my iBook G4 */
92		switch (sc->sc_address) {
93			case 0x35:
94				strcpy(name, "tas3004");
95				break;
96			default:
97				strcpy(name, "unknown");
98		}
99	}
100	aprint_normal(" Audio Codec (%s)\n", name);
101}
102