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1 | /* |
2 | * ad73311.c -- ALSA Soc AD73311 codec support | |
3 | * | |
4 | * Copyright: Analog Device Inc. | |
5 | * Author: Cliff Cai <cliff.cai@analog.com> | |
6 | * | |
7 | * This program is free software; you can redistribute it and/or modify it | |
8 | * under the terms of the GNU General Public License as published by the | |
9 | * Free Software Foundation; either version 2 of the License, or (at your | |
10 | * option) any later version. | |
11 | * | |
12 | * Revision history | |
13 | * 25th Sep 2008 Initial version. | |
14 | */ | |
15 | ||
16 | #include <linux/init.h> | |
17 | #include <linux/module.h> | |
18 | #include <linux/version.h> | |
19 | #include <linux/kernel.h> | |
20 | #include <linux/device.h> | |
21 | #include <sound/core.h> | |
22 | #include <sound/pcm.h> | |
23 | #include <sound/ac97_codec.h> | |
24 | #include <sound/initval.h> | |
25 | #include <sound/soc.h> | |
26 | ||
27 | #include "ad73311.h" | |
28 | ||
29 | struct snd_soc_dai ad73311_dai = { | |
30 | .name = "AD73311", | |
31 | .playback = { | |
32 | .stream_name = "Playback", | |
33 | .channels_min = 1, | |
34 | .channels_max = 1, | |
35 | .rates = SNDRV_PCM_RATE_8000, | |
36 | .formats = SNDRV_PCM_FMTBIT_S16_LE, }, | |
37 | .capture = { | |
38 | .stream_name = "Capture", | |
39 | .channels_min = 1, | |
40 | .channels_max = 1, | |
41 | .rates = SNDRV_PCM_RATE_8000, | |
42 | .formats = SNDRV_PCM_FMTBIT_S16_LE, }, | |
43 | }; | |
44 | EXPORT_SYMBOL_GPL(ad73311_dai); | |
45 | ||
46 | static int ad73311_soc_probe(struct platform_device *pdev) | |
47 | { | |
48 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); | |
49 | struct snd_soc_codec *codec; | |
50 | int ret = 0; | |
51 | ||
52 | codec = kzalloc(sizeof(struct snd_soc_codec), GFP_KERNEL); | |
53 | if (codec == NULL) | |
54 | return -ENOMEM; | |
55 | mutex_init(&codec->mutex); | |
56 | codec->name = "AD73311"; | |
57 | codec->owner = THIS_MODULE; | |
58 | codec->dai = &ad73311_dai; | |
59 | codec->num_dai = 1; | |
60 | socdev->codec = codec; | |
61 | INIT_LIST_HEAD(&codec->dapm_widgets); | |
62 | INIT_LIST_HEAD(&codec->dapm_paths); | |
63 | ||
64 | /* register pcms */ | |
65 | ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1); | |
66 | if (ret < 0) { | |
67 | printk(KERN_ERR "ad73311: failed to create pcms\n"); | |
68 | goto pcm_err; | |
69 | } | |
70 | ||
71 | ret = snd_soc_register_card(socdev); | |
72 | if (ret < 0) { | |
73 | printk(KERN_ERR "ad73311: failed to register card\n"); | |
74 | goto register_err; | |
75 | } | |
76 | ||
77 | return ret; | |
78 | ||
79 | register_err: | |
80 | snd_soc_free_pcms(socdev); | |
81 | pcm_err: | |
82 | kfree(socdev->codec); | |
83 | socdev->codec = NULL; | |
84 | return ret; | |
85 | } | |
86 | ||
87 | static int ad73311_soc_remove(struct platform_device *pdev) | |
88 | { | |
89 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); | |
90 | struct snd_soc_codec *codec = socdev->codec; | |
91 | ||
92 | if (codec == NULL) | |
93 | return 0; | |
94 | snd_soc_free_pcms(socdev); | |
95 | kfree(codec); | |
96 | return 0; | |
97 | } | |
98 | ||
99 | struct snd_soc_codec_device soc_codec_dev_ad73311 = { | |
100 | .probe = ad73311_soc_probe, | |
101 | .remove = ad73311_soc_remove, | |
102 | }; | |
103 | EXPORT_SYMBOL_GPL(soc_codec_dev_ad73311); | |
104 | ||
105 | MODULE_DESCRIPTION("ASoC ad73311 driver"); | |
106 | MODULE_AUTHOR("Cliff Cai "); | |
107 | MODULE_LICENSE("GPL"); |