Commit | Line | Data |
---|---|---|
f3d9478b JB |
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> | |
14 | MODULE_AUTHOR("Johannes Berg <johannes@sipsolutions.net>"); | |
15 | MODULE_LICENSE("GPL"); | |
16 | MODULE_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 | ||
24 | struct toonie { | |
25 | struct aoa_codec codec; | |
26 | }; | |
27 | #define codec_to_toonie(c) container_of(c, struct toonie, codec) | |
28 | ||
29 | static int toonie_dev_register(struct snd_device *dev) | |
30 | { | |
31 | return 0; | |
32 | } | |
33 | ||
34 | static struct snd_device_ops ops = { | |
35 | .dev_register = toonie_dev_register, | |
36 | }; | |
37 | ||
38 | static 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 | ||
6e8331ac JB |
54 | static int toonie_usable(struct codec_info_item *cii, |
55 | struct transfer_info *ti, | |
56 | struct transfer_info *out) | |
57 | { | |
58 | return 1; | |
59 | } | |
60 | ||
f3d9478b JB |
61 | #ifdef CONFIG_PM |
62 | static int toonie_suspend(struct codec_info_item *cii, pm_message_t state) | |
63 | { | |
64 | /* can we turn it off somehow? */ | |
65 | return 0; | |
66 | } | |
67 | ||
68 | static int toonie_resume(struct codec_info_item *cii) | |
69 | { | |
70 | return 0; | |
71 | } | |
72 | #endif /* CONFIG_PM */ | |
73 | ||
74 | static struct codec_info toonie_codec_info = { | |
75 | .transfers = toonie_transfers, | |
76 | .sysclock_factor = 256, | |
77 | .bus_factor = 64, | |
78 | .owner = THIS_MODULE, | |
6e8331ac | 79 | .usable = toonie_usable, |
f3d9478b JB |
80 | #ifdef CONFIG_PM |
81 | .suspend = toonie_suspend, | |
82 | .resume = toonie_resume, | |
83 | #endif | |
84 | }; | |
85 | ||
86 | static int toonie_init_codec(struct aoa_codec *codec) | |
87 | { | |
88 | struct toonie *toonie = codec_to_toonie(codec); | |
89 | ||
6e8331ac JB |
90 | /* nothing connected? what a joke! */ |
91 | if (toonie->codec.connected != 1) | |
92 | return -ENOTCONN; | |
93 | ||
f3d9478b JB |
94 | if (aoa_snd_device_new(SNDRV_DEV_LOWLEVEL, toonie, &ops)) { |
95 | printk(KERN_ERR PFX "failed to create toonie snd device!\n"); | |
96 | return -ENODEV; | |
97 | } | |
98 | ||
f3d9478b JB |
99 | if (toonie->codec.soundbus_dev->attach_codec(toonie->codec.soundbus_dev, |
100 | aoa_get_card(), | |
101 | &toonie_codec_info, toonie)) { | |
102 | printk(KERN_ERR PFX "error creating toonie pcm\n"); | |
6e8331ac | 103 | snd_device_free(aoa_get_card(), toonie); |
f3d9478b JB |
104 | return -ENODEV; |
105 | } | |
106 | ||
107 | return 0; | |
108 | } | |
109 | ||
110 | static void toonie_exit_codec(struct aoa_codec *codec) | |
111 | { | |
112 | struct toonie *toonie = codec_to_toonie(codec); | |
113 | ||
114 | if (!toonie->codec.soundbus_dev) { | |
115 | printk(KERN_ERR PFX "toonie_exit_codec called without soundbus_dev!\n"); | |
116 | return; | |
117 | } | |
118 | toonie->codec.soundbus_dev->detach_codec(toonie->codec.soundbus_dev, toonie); | |
119 | } | |
120 | ||
121 | static struct toonie *toonie; | |
122 | ||
123 | static int __init toonie_init(void) | |
124 | { | |
125 | toonie = kzalloc(sizeof(struct toonie), GFP_KERNEL); | |
126 | ||
127 | if (!toonie) | |
128 | return -ENOMEM; | |
129 | ||
130 | strlcpy(toonie->codec.name, "toonie", sizeof(toonie->codec.name)); | |
131 | toonie->codec.owner = THIS_MODULE; | |
132 | toonie->codec.init = toonie_init_codec; | |
133 | toonie->codec.exit = toonie_exit_codec; | |
134 | ||
135 | if (aoa_codec_register(&toonie->codec)) { | |
136 | kfree(toonie); | |
137 | return -EINVAL; | |
138 | } | |
139 | ||
140 | return 0; | |
141 | } | |
142 | ||
143 | static void __exit toonie_exit(void) | |
144 | { | |
145 | aoa_codec_unregister(&toonie->codec); | |
146 | kfree(toonie); | |
147 | } | |
148 | ||
149 | module_init(toonie_init); | |
150 | module_exit(toonie_exit); |