1 /* $NetBSD: deq.c,v 1.21 2023/12/20 15:29:04 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 1.21 2023/12/20 15:29:04 thorpej Exp $");
36
37 #include <sys/param.h>
38 #include <sys/systm.h>
39 #include <sys/kernel.h>
40 #include <sys/device.h>
41
42 #include <dev/ofw/openfirm.h>
43 #include <dev/i2c/i2cvar.h>
44
45 #include <machine/autoconf.h>
46 #include <macppc/dev/deqvar.h>
47
48 static void deq_attach(device_t, device_t, void *);
49 static int deq_match(device_t, struct cfdata *, void *);
50
51 CFATTACH_DECL_NEW(deq, sizeof(struct deq_softc),
52 deq_match, deq_attach, NULL, NULL);
53
54 static const struct device_compatible_entry compat_data[] = {
55 { .compat = "deq" },
56 { .compat = "tas3004" },
57 { .compat = "pcm3052" },
58 { .compat = "cs8416" },
59 { .compat = "codec" },
60 DEVICE_COMPAT_EOL
61 };
62
63 int
deq_match(device_t parent,struct cfdata * cf,void * aux)64 deq_match(device_t parent, struct cfdata *cf, void *aux)
65 {
66 struct i2c_attach_args *ia = aux;
67 int match_result;
68
69 if (iic_use_direct_match(ia, cf, compat_data, &match_result))
70 return match_result;
71
72 /* This driver is direct-config only. */
73
74 return 0;
75 }
76
77 void
deq_attach(device_t parent,device_t self,void * aux)78 deq_attach(device_t parent, device_t self, void *aux)
79 {
80 struct deq_softc *sc = device_private(self);
81 struct i2c_attach_args *ia = aux;
82 char name[256];
83
84 sc->sc_dev = self;
85 sc->sc_node = ia->ia_cookie;
86 sc->sc_parent = parent;
87 sc->sc_address = ia->ia_addr;
88 sc->sc_i2c = ia->ia_tag;
89 if (OF_getprop(sc->sc_node, "compatible", name, 256) <= 0) {
90 /* deq has no 'compatible' on my iBook G4 or Quicksilver */
91 switch (sc->sc_address) {
92 case 0x35:
93 strcpy(name, "tas3004");
94 break;
95 case 0x34:
96 strcpy(name, "tas3001");
97 break;
98 default:
99 strcpy(name, "unknown");
100 }
101 }
102 aprint_normal(" Audio Codec (%s)\n", name);
103 }
104