projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 0e77e784 CC |
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"); |