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authorSeungwhan Youn <sw.youn@samsung.com>2010-05-27 18:13:48 +0900
committerMark Brown <broonie@opensource.wolfsonmicro.com>2010-05-31 12:08:33 +0100
commit3a642915ada4b7df9440a7bbed35cea94a5ccfe0 (patch)
tree867acc1fdb978a18f27c8997252470e62be31460 /sound/soc
parente37c83c06c2690157a989df40dc99a6b61c9ea15 (diff)
ASoC: spdif: Add codec driver to use spdif stand-alone
This patch adds spdif dummy codec driver for using spdif-dit as a stand-alone. Until this, spdif-dit can be used only with other codecs like tlv320aci3x in davinci platform. Signed-off-by: Seungwhan Youn <sw.youn@samsung.com> Acked-by: Liam Girdwood <lrg@slimlogic.co.uk> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Diffstat (limited to 'sound/soc')
-rw-r--r--sound/soc/codecs/spdif_transciever.c93
1 files changed, 92 insertions, 1 deletions
diff --git a/sound/soc/codecs/spdif_transciever.c b/sound/soc/codecs/spdif_transciever.c
index a63191141052..f0945ab2002e 100644
--- a/sound/soc/codecs/spdif_transciever.c
+++ b/sound/soc/codecs/spdif_transciever.c
@@ -18,6 +18,7 @@
#include <linux/moduleparam.h>
#include <sound/soc.h>
#include <sound/pcm.h>
+#include <sound/initval.h>
#include "spdif_transciever.h"
@@ -26,6 +27,48 @@ MODULE_LICENSE("GPL");
#define STUB_RATES SNDRV_PCM_RATE_8000_96000
#define STUB_FORMATS SNDRV_PCM_FMTBIT_S16_LE
+static struct snd_soc_codec *spdif_dit_codec;
+
+static int spdif_dit_codec_probe(struct platform_device *pdev)
+{
+ struct snd_soc_device *socdev = platform_get_drvdata(pdev);
+ struct snd_soc_codec *codec;
+ int ret;
+
+ if (spdif_dit_codec == NULL) {
+ dev_err(&pdev->dev, "Codec device not registered\n");
+ return -ENODEV;
+ }
+
+ socdev->card->codec = spdif_dit_codec;
+ codec = spdif_dit_codec;
+
+ ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1);
+ if (ret < 0) {
+ dev_err(codec->dev, "failed to create pcms: %d\n", ret);
+ goto err_create_pcms;
+ }
+
+ return 0;
+
+err_create_pcms:
+ return ret;
+}
+
+static int spdif_dit_codec_remove(struct platform_device *pdev)
+{
+ struct snd_soc_device *socdev = platform_get_drvdata(pdev);
+
+ snd_soc_free_pcms(socdev);
+
+ return 0;
+}
+
+struct snd_soc_codec_device soc_codec_dev_spdif_dit = {
+ .probe = spdif_dit_codec_probe,
+ .remove = spdif_dit_codec_remove,
+}; EXPORT_SYMBOL_GPL(soc_codec_dev_spdif_dit);
+
struct snd_soc_dai dit_stub_dai = {
.name = "DIT",
.playback = {
@@ -40,13 +83,61 @@ EXPORT_SYMBOL_GPL(dit_stub_dai);
static int spdif_dit_probe(struct platform_device *pdev)
{
+ struct snd_soc_codec *codec;
+ int ret;
+
+ if (spdif_dit_codec) {
+ dev_err(&pdev->dev, "Another Codec is registered\n");
+ ret = -EINVAL;
+ goto err_reg_codec;
+ }
+
+ codec = kzalloc(sizeof(struct snd_soc_codec), GFP_KERNEL);
+ if (codec == NULL)
+ return -ENOMEM;
+
+ codec->dev = &pdev->dev;
+
+ mutex_init(&codec->mutex);
+
+ INIT_LIST_HEAD(&codec->dapm_widgets);
+ INIT_LIST_HEAD(&codec->dapm_paths);
+
+ codec->name = "spdif-dit";
+ codec->owner = THIS_MODULE;
+ codec->dai = &dit_stub_dai;
+ codec->num_dai = 1;
+
+ spdif_dit_codec = codec;
+
+ ret = snd_soc_register_codec(codec);
+ if (ret < 0) {
+ dev_err(codec->dev, "Failed to register codec: %d\n", ret);
+ goto err_reg_codec;
+ }
+
dit_stub_dai.dev = &pdev->dev;
- return snd_soc_register_dai(&dit_stub_dai);
+ ret = snd_soc_register_dai(&dit_stub_dai);
+ if (ret < 0) {
+ dev_err(codec->dev, "Failed to register dai: %d\n", ret);
+ goto err_reg_dai;
+ }
+
+ return 0;
+
+err_reg_dai:
+ snd_soc_unregister_codec(codec);
+err_reg_codec:
+ kfree(spdif_dit_codec);
+ return ret;
}
static int spdif_dit_remove(struct platform_device *pdev)
{
snd_soc_unregister_dai(&dit_stub_dai);
+ snd_soc_unregister_codec(spdif_dit_codec);
+ kfree(spdif_dit_codec);
+ spdif_dit_codec = NULL;
return 0;
}