deq.c revision 1.18 
1/*	$NetBSD: deq.c,v 1.18 2021/01/17 21:02:33 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 1.18 2021/01/17 21:02:33 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 struct device_compatible_entry compat_data[] = {
56	{ .compat = "deq" },
57	{ .compat = "tas3004" },
58	{ .compat = "pcm3052" },
59	{ .compat = "cs8416" },
60	{ .compat = "codec" },
61
62	{ 0 }
63};
64
65int
66deq_match(device_t parent, struct cfdata *cf, void *aux)
67{
68	struct i2c_attach_args *ia = aux;
69	int match_result;
70
71	if (iic_use_direct_match(ia, cf, compat_data, &match_result))
72		return match_result;
73
74	/* This driver is direct-config only. */
75
76	return 0;
77}
78
79void
80deq_attach(device_t parent, device_t self, void *aux)
81{
82	struct deq_softc *sc = device_private(self);
83	struct i2c_attach_args *ia = aux;
84	char name[256];
85
86	sc->sc_dev = self;
87	sc->sc_node = ia->ia_cookie;
88	sc->sc_parent = parent;
89	sc->sc_address = ia->ia_addr;
90	sc->sc_i2c = ia->ia_tag;
91	if (OF_getprop(sc->sc_node, "compatible", name, 256) <= 0) {
92		/* deq has no 'compatible' on my iBook G4 or Quicksilver */
93		switch (sc->sc_address) {
94			case 0x35:
95				strcpy(name, "tas3004");
96				break;
97			case 0x34:
98				strcpy(name, "tas3001");
99				break;
100			default:
101				strcpy(name, "unknown");
102		}
103	}
104	aprint_normal(" Audio Codec (%s)\n", name);
105}
106