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-rw-r--r--sound/aoa/codecs/snd-aoa-codec-toonie.c141
1 files changed, 141 insertions, 0 deletions
diff --git a/sound/aoa/codecs/snd-aoa-codec-toonie.c b/sound/aoa/codecs/snd-aoa-codec-toonie.c
new file mode 100644
index 000000000000..bcc555647e79
--- /dev/null
+++ b/sound/aoa/codecs/snd-aoa-codec-toonie.c
@@ -0,0 +1,141 @@
1/*
2 * Apple Onboard Audio driver for Toonie codec
3 *
4 * Copyright 2006 Johannes Berg <johannes@sipsolutions.net>
5 *
6 * GPL v2, can be found in COPYING.
7 *
8 *
9 * This is a driver for the toonie codec chip. This chip is present
10 * on the Mac Mini and is nothing but a DAC.
11 */
12#include <linux/delay.h>
13#include <linux/module.h>
14MODULE_AUTHOR("Johannes Berg <johannes@sipsolutions.net>");
15MODULE_LICENSE("GPL");
16MODULE_DESCRIPTION("toonie codec driver for snd-aoa");
17
18#include "../aoa.h"
19#include "../soundbus/soundbus.h"
20
21
22#define PFX "snd-aoa-codec-toonie: "
23
24struct toonie {
25 struct aoa_codec codec;
26};
27#define codec_to_toonie(c) container_of(c, struct toonie, codec)
28
29static int toonie_dev_register(struct snd_device *dev)
30{
31 return 0;
32}
33
34static struct snd_device_ops ops = {
35 .dev_register = toonie_dev_register,
36};
37
38static struct transfer_info toonie_transfers[] = {
39 /* This thing *only* has analog output,
40 * the rates are taken from Info.plist
41 * from Darwin. */
42 {
43 .formats = SNDRV_PCM_FMTBIT_S16_BE |
44 SNDRV_PCM_FMTBIT_S24_BE,
45 .rates = SNDRV_PCM_RATE_32000 |
46 SNDRV_PCM_RATE_44100 |
47 SNDRV_PCM_RATE_48000 |
48 SNDRV_PCM_RATE_88200 |
49 SNDRV_PCM_RATE_96000,
50 },
51 {}
52};
53
54#ifdef CONFIG_PM
55static int toonie_suspend(struct codec_info_item *cii, pm_message_t state)
56{
57 /* can we turn it off somehow? */
58 return 0;
59}
60
61static int toonie_resume(struct codec_info_item *cii)
62{
63 return 0;
64}
65#endif /* CONFIG_PM */
66
67static struct codec_info toonie_codec_info = {
68 .transfers = toonie_transfers,
69 .sysclock_factor = 256,
70 .bus_factor = 64,
71 .owner = THIS_MODULE,
72#ifdef CONFIG_PM
73 .suspend = toonie_suspend,
74 .resume = toonie_resume,
75#endif
76};
77
78static int toonie_init_codec(struct aoa_codec *codec)
79{
80 struct toonie *toonie = codec_to_toonie(codec);
81
82 if (aoa_snd_device_new(SNDRV_DEV_LOWLEVEL, toonie, &ops)) {
83 printk(KERN_ERR PFX "failed to create toonie snd device!\n");
84 return -ENODEV;
85 }
86
87 /* nothing connected? what a joke! */
88 if (toonie->codec.connected != 1)
89 return -ENOTCONN;
90
91 if (toonie->codec.soundbus_dev->attach_codec(toonie->codec.soundbus_dev,
92 aoa_get_card(),
93 &toonie_codec_info, toonie)) {
94 printk(KERN_ERR PFX "error creating toonie pcm\n");
95 return -ENODEV;
96 }
97
98 return 0;
99}
100
101static void toonie_exit_codec(struct aoa_codec *codec)
102{
103 struct toonie *toonie = codec_to_toonie(codec);
104
105 if (!toonie->codec.soundbus_dev) {
106 printk(KERN_ERR PFX "toonie_exit_codec called without soundbus_dev!\n");
107 return;
108 }
109 toonie->codec.soundbus_dev->detach_codec(toonie->codec.soundbus_dev, toonie);
110}
111
112static struct toonie *toonie;
113
114static int __init toonie_init(void)
115{
116 toonie = kzalloc(sizeof(struct toonie), GFP_KERNEL);
117
118 if (!toonie)
119 return -ENOMEM;
120
121 strlcpy(toonie->codec.name, "toonie", sizeof(toonie->codec.name));
122 toonie->codec.owner = THIS_MODULE;
123 toonie->codec.init = toonie_init_codec;
124 toonie->codec.exit = toonie_exit_codec;
125
126 if (aoa_codec_register(&toonie->codec)) {
127 kfree(toonie);
128 return -EINVAL;
129 }
130
131 return 0;
132}
133
134static void __exit toonie_exit(void)
135{
136 aoa_codec_unregister(&toonie->codec);
137 kfree(toonie);
138}
139
140module_init(toonie_init);
141module_exit(toonie_exit);