1 files changed, 162 insertions, 0 deletions
diff --git a/sound/soc/codecs/bluetooth.c b/sound/soc/codecs/bluetooth.c
new file mode 100644
index 00000000000..1b065f7653a
--- /dev/null
+++ b/sound/soc/codecs/bluetooth.c
@@ -0,0 +1,162 @@
+/*
+ * Copyright 2008-2010 Freescale Semiconductor, Inc. All Rights Reserved.
+ */
+
+/*
+ * The code contained herein is licensed under the GNU General Public
+ * License. You may obtain a copy of the GNU General Public License
+ * Version 2 or later at the following locations:
+ *
+ * http://www.opensource.org/licenses/gpl-license.html
+ * http://www.gnu.org/copyleft/gpl.html
+ */
+
+/*!
+ * @file bluetooth.c
+ * @brief Driver for bluetooth PCM interface
+ *
+ * @ingroup Sound
+ */
+
+#include <linux/slab.h>
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/init.h>
+#include <linux/delay.h>
+#include <linux/pm.h>
+#include <linux/platform_device.h>
+#include <sound/core.h>
+#include <sound/pcm.h>
+#include <sound/pcm_params.h>
+#include <sound/soc.h>
+#include <sound/soc-dapm.h>
+#include <sound/initval.h>
+#include <sound/tlv.h>
+
+#define BLUETOOTH_RATES SNDRV_PCM_RATE_8000
+
+#define BLUETOOTH_FORMATS SNDRV_PCM_FMTBIT_S16_LE
+
+struct snd_soc_dai bt_dai = {
+	.name = "bluetooth",
+	.playback = {
+		     .stream_name = "Playback",
+		     .channels_min = 1,
+		     .channels_max = 2,
+		     .rates = BLUETOOTH_RATES,
+		     .formats = BLUETOOTH_FORMATS,
+		     },
+	.capture = {
+		    .stream_name = "Capture",
+		    .channels_min = 1,
+		    .channels_max = 2,
+		    .rates = BLUETOOTH_RATES,
+		    .formats = BLUETOOTH_FORMATS,
+		    },
+};
+EXPORT_SYMBOL_GPL(bt_dai);
+
+static int bt_init(struct snd_soc_device *socdev)
+{
+	struct snd_soc_codec *codec = socdev->card->codec;
+	int ret = 0;
+
+	codec->name = "bluetooth";
+	codec->owner = THIS_MODULE;
+	codec->dai = &bt_dai;
+	codec->num_dai = 1;
+
+	snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1);
+	if (ret < 0) {
+		pr_err("failed to create bluetooth pcms\n");
+		return ret;
+	}
+
+	ret = snd_soc_init_card(socdev);
+	strcpy(codec->card->id, "bluetooth");
+
+	if (ret < 0) {
+		pr_err("bluetooth: failed to register card\n");
+		snd_soc_free_pcms(socdev);
+		snd_soc_dapm_free(socdev);
+		return ret;
+	}
+	return 0;
+}
+
+static struct snd_soc_device *bt_socdev;
+
+static int bt_probe(struct platform_device *pdev)
+{
+	struct snd_soc_device *socdev = platform_get_drvdata(pdev);
+	struct snd_soc_codec *codec = socdev->card->codec;
+	int ret = 0;
+
+	codec = kzalloc(sizeof(struct snd_soc_codec), GFP_KERNEL);
+	if (codec == NULL)
+		return -ENOMEM;
+
+	socdev->card->codec = codec;
+	mutex_init(&codec->mutex);
+	INIT_LIST_HEAD(&codec->dapm_widgets);
+	INIT_LIST_HEAD(&codec->dapm_paths);
+
+	bt_socdev = socdev;
+
+	ret = bt_init(socdev);
+	if (ret < 0) {
+		pr_err("Bluetooth codec initialisation failed\n");
+		kfree(codec);
+	}
+
+	return ret;
+}
+
+/* power down chip */
+static int bt_remove(struct platform_device *pdev)
+{
+	struct snd_soc_device *socdev = platform_get_drvdata(pdev);
+	struct snd_soc_codec *codec = socdev->card->codec;
+
+	snd_soc_free_pcms(socdev);
+	snd_soc_dapm_free(socdev);
+	kfree(codec);
+
+	return 0;
+}
+
+static int bt_suspend(struct platform_device *pdev, pm_message_t state)
+{
+	return 0;
+}
+
+static int bt_resume(struct platform_device *pdev)
+{
+	return 0;
+}
+
+struct snd_soc_codec_device soc_codec_dev_bt = {
+	.probe = bt_probe,
+	.remove = bt_remove,
+	.suspend = bt_suspend,
+	.resume = bt_resume,
+};
+EXPORT_SYMBOL_GPL(soc_codec_dev_bt);
+
+static int __init bluetooth_modinit(void)
+{
+	return snd_soc_register_dai(&bt_dai);
+}
+
+module_init(bluetooth_modinit);
+
+static void __exit bluetooth_exit(void)
+{
+	snd_soc_unregister_dai(&bt_dai);
+}
+
+module_exit(bluetooth_exit);
+
+MODULE_DESCRIPTION("ASoC bluetooth codec driver");
+MODULE_AUTHOR("Freescale Semiconductor, Inc.");
+MODULE_LICENSE("GPL");