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Cliff Cai0e77e782008-09-27 16:57:26 +08001/*
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.
Cliff Cai0e77e782008-09-27 16:57:26 +080011 */
12
13#include <linux/init.h>
14#include <linux/module.h>
Cliff Cai0e77e782008-09-27 16:57:26 +080015#include <linux/kernel.h>
16#include <linux/device.h>
17#include <sound/core.h>
18#include <sound/pcm.h>
19#include <sound/ac97_codec.h>
20#include <sound/initval.h>
21#include <sound/soc.h>
22
23#include "ad73311.h"
24
25struct snd_soc_dai ad73311_dai = {
26 .name = "AD73311",
27 .playback = {
28 .stream_name = "Playback",
29 .channels_min = 1,
30 .channels_max = 1,
31 .rates = SNDRV_PCM_RATE_8000,
32 .formats = SNDRV_PCM_FMTBIT_S16_LE, },
33 .capture = {
34 .stream_name = "Capture",
35 .channels_min = 1,
36 .channels_max = 1,
37 .rates = SNDRV_PCM_RATE_8000,
38 .formats = SNDRV_PCM_FMTBIT_S16_LE, },
39};
40EXPORT_SYMBOL_GPL(ad73311_dai);
41
42static int ad73311_soc_probe(struct platform_device *pdev)
43{
44 struct snd_soc_device *socdev = platform_get_drvdata(pdev);
45 struct snd_soc_codec *codec;
46 int ret = 0;
47
48 codec = kzalloc(sizeof(struct snd_soc_codec), GFP_KERNEL);
49 if (codec == NULL)
50 return -ENOMEM;
51 mutex_init(&codec->mutex);
52 codec->name = "AD73311";
53 codec->owner = THIS_MODULE;
54 codec->dai = &ad73311_dai;
55 codec->num_dai = 1;
Mark Brown6627a652009-01-23 22:55:23 +000056 socdev->card->codec = codec;
Cliff Cai0e77e782008-09-27 16:57:26 +080057 INIT_LIST_HEAD(&codec->dapm_widgets);
58 INIT_LIST_HEAD(&codec->dapm_paths);
59
60 /* register pcms */
61 ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1);
62 if (ret < 0) {
63 printk(KERN_ERR "ad73311: failed to create pcms\n");
64 goto pcm_err;
65 }
66
Mark Brown968a6022008-11-28 11:49:07 +000067 ret = snd_soc_init_card(socdev);
Cliff Cai0e77e782008-09-27 16:57:26 +080068 if (ret < 0) {
69 printk(KERN_ERR "ad73311: failed to register card\n");
70 goto register_err;
71 }
72
73 return ret;
74
75register_err:
76 snd_soc_free_pcms(socdev);
77pcm_err:
Mark Brown6627a652009-01-23 22:55:23 +000078 kfree(socdev->card->codec);
79 socdev->card->codec = NULL;
Cliff Cai0e77e782008-09-27 16:57:26 +080080 return ret;
81}
82
83static int ad73311_soc_remove(struct platform_device *pdev)
84{
85 struct snd_soc_device *socdev = platform_get_drvdata(pdev);
Mark Brown6627a652009-01-23 22:55:23 +000086 struct snd_soc_codec *codec = socdev->card->codec;
Cliff Cai0e77e782008-09-27 16:57:26 +080087
88 if (codec == NULL)
89 return 0;
90 snd_soc_free_pcms(socdev);
91 kfree(codec);
92 return 0;
93}
94
95struct snd_soc_codec_device soc_codec_dev_ad73311 = {
96 .probe = ad73311_soc_probe,
97 .remove = ad73311_soc_remove,
98};
99EXPORT_SYMBOL_GPL(soc_codec_dev_ad73311);
100
Takashi Iwaic9b3a402008-12-10 07:47:22 +0100101static int __init ad73311_init(void)
Mark Brown64089b82008-12-08 19:17:58 +0000102{
103 return snd_soc_register_dai(&ad73311_dai);
104}
105module_init(ad73311_init);
106
107static void __exit ad73311_exit(void)
108{
109 snd_soc_unregister_dai(&ad73311_dai);
110}
111module_exit(ad73311_exit);
112
Cliff Cai0e77e782008-09-27 16:57:26 +0800113MODULE_DESCRIPTION("ASoC ad73311 driver");
114MODULE_AUTHOR("Cliff Cai ");
115MODULE_LICENSE("GPL");