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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> | |
5a0e3ad6 | 14 | #include <linux/slab.h> |
f3d9478b JB |
15 | MODULE_AUTHOR("Johannes Berg <johannes@sipsolutions.net>"); |
16 | MODULE_LICENSE("GPL"); | |
17 | MODULE_DESCRIPTION("toonie codec driver for snd-aoa"); | |
18 | ||
19 | #include "../aoa.h" | |
20 | #include "../soundbus/soundbus.h" | |
21 | ||
22 | ||
23 | #define PFX "snd-aoa-codec-toonie: " | |
24 | ||
25 | struct toonie { | |
26 | struct aoa_codec codec; | |
27 | }; | |
28 | #define codec_to_toonie(c) container_of(c, struct toonie, codec) | |
29 | ||
30 | static int toonie_dev_register(struct snd_device *dev) | |
31 | { | |
32 | return 0; | |
33 | } | |
34 | ||
35 | static struct snd_device_ops ops = { | |
36 | .dev_register = toonie_dev_register, | |
37 | }; | |
38 | ||
39 | static struct transfer_info toonie_transfers[] = { | |
40 | /* This thing *only* has analog output, | |
41 | * the rates are taken from Info.plist | |
42 | * from Darwin. */ | |
43 | { | |
44 | .formats = SNDRV_PCM_FMTBIT_S16_BE | | |
45 | SNDRV_PCM_FMTBIT_S24_BE, | |
46 | .rates = SNDRV_PCM_RATE_32000 | | |
47 | SNDRV_PCM_RATE_44100 | | |
48 | SNDRV_PCM_RATE_48000 | | |
49 | SNDRV_PCM_RATE_88200 | | |
50 | SNDRV_PCM_RATE_96000, | |
51 | }, | |
52 | {} | |
53 | }; | |
54 | ||
6e8331ac JB |
55 | static int toonie_usable(struct codec_info_item *cii, |
56 | struct transfer_info *ti, | |
57 | struct transfer_info *out) | |
58 | { | |
59 | return 1; | |
60 | } | |
61 | ||
f3d9478b JB |
62 | #ifdef CONFIG_PM |
63 | static int toonie_suspend(struct codec_info_item *cii, pm_message_t state) | |
64 | { | |
65 | /* can we turn it off somehow? */ | |
66 | return 0; | |
67 | } | |
68 | ||
69 | static int toonie_resume(struct codec_info_item *cii) | |
70 | { | |
71 | return 0; | |
72 | } | |
73 | #endif /* CONFIG_PM */ | |
74 | ||
75 | static struct codec_info toonie_codec_info = { | |
76 | .transfers = toonie_transfers, | |
77 | .sysclock_factor = 256, | |
78 | .bus_factor = 64, | |
79 | .owner = THIS_MODULE, | |
6e8331ac | 80 | .usable = toonie_usable, |
f3d9478b JB |
81 | #ifdef CONFIG_PM |
82 | .suspend = toonie_suspend, | |
83 | .resume = toonie_resume, | |
84 | #endif | |
85 | }; | |
86 | ||
87 | static int toonie_init_codec(struct aoa_codec *codec) | |
88 | { | |
89 | struct toonie *toonie = codec_to_toonie(codec); | |
90 | ||
6e8331ac JB |
91 | /* nothing connected? what a joke! */ |
92 | if (toonie->codec.connected != 1) | |
93 | return -ENOTCONN; | |
94 | ||
d9151783 | 95 | if (aoa_snd_device_new(SNDRV_DEV_CODEC, toonie, &ops)) { |
f3d9478b JB |
96 | printk(KERN_ERR PFX "failed to create toonie snd device!\n"); |
97 | return -ENODEV; | |
98 | } | |
99 | ||
f3d9478b JB |
100 | if (toonie->codec.soundbus_dev->attach_codec(toonie->codec.soundbus_dev, |
101 | aoa_get_card(), | |
102 | &toonie_codec_info, toonie)) { | |
103 | printk(KERN_ERR PFX "error creating toonie pcm\n"); | |
6e8331ac | 104 | snd_device_free(aoa_get_card(), toonie); |
f3d9478b JB |
105 | return -ENODEV; |
106 | } | |
107 | ||
108 | return 0; | |
109 | } | |
110 | ||
111 | static void toonie_exit_codec(struct aoa_codec *codec) | |
112 | { | |
113 | struct toonie *toonie = codec_to_toonie(codec); | |
114 | ||
115 | if (!toonie->codec.soundbus_dev) { | |
116 | printk(KERN_ERR PFX "toonie_exit_codec called without soundbus_dev!\n"); | |
117 | return; | |
118 | } | |
119 | toonie->codec.soundbus_dev->detach_codec(toonie->codec.soundbus_dev, toonie); | |
120 | } | |
121 | ||
122 | static struct toonie *toonie; | |
123 | ||
124 | static int __init toonie_init(void) | |
125 | { | |
126 | toonie = kzalloc(sizeof(struct toonie), GFP_KERNEL); | |
127 | ||
128 | if (!toonie) | |
129 | return -ENOMEM; | |
130 | ||
131 | strlcpy(toonie->codec.name, "toonie", sizeof(toonie->codec.name)); | |
132 | toonie->codec.owner = THIS_MODULE; | |
133 | toonie->codec.init = toonie_init_codec; | |
134 | toonie->codec.exit = toonie_exit_codec; | |
888dcb7c | 135 | |
f3d9478b JB |
136 | if (aoa_codec_register(&toonie->codec)) { |
137 | kfree(toonie); | |
138 | return -EINVAL; | |
139 | } | |
140 | ||
141 | return 0; | |
142 | } | |
143 | ||
144 | static void __exit toonie_exit(void) | |
145 | { | |
146 | aoa_codec_unregister(&toonie->codec); | |
147 | kfree(toonie); | |
148 | } | |
149 | ||
150 | module_init(toonie_init); | |
151 | module_exit(toonie_exit); |