1 files changed, 132 insertions, 0 deletions
diff --git a/sound/soc/codecs/w2cbw003-bt.c b/sound/soc/codecs/w2cbw003-bt.c
new file mode 100644
index 0000000..5582309
--- /dev/null
+++ b/sound/soc/codecs/w2cbw003-bt.c
@@ -0,0 +1,132 @@
+/*
+ * FIXME: this is a blueprint for the W2CBW003 Bluetooth PCM interface
+ * needs to be adapted for GTA04
+ * CHECKME: can we use the generic AC97 or SPDIF driver instead of defining our own?
+ *
+ * w2cbw003.c
+ *
+ *  Created on: 15-Oct-2009
+ *      Author: neil.jones@imgtec.com
+ *
+ * Copyright (C) 2009 Imagination Technologies Ltd.
+ *
+ *  This program is free software; you can redistribute  it and/or modify it
+ *  under  the terms of  the GNU General  Public License as published by the
+ *  Free Software Foundation;  either version 2 of the  License, or (at your
+ *  option) any later version.
+ */
+
+#include <linux/init.h>
+#include <linux/slab.h>
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/device.h>
+#include <sound/core.h>
+#include <sound/pcm.h>
+#include <sound/ac97_codec.h>
+#include <sound/initval.h>
+#include <sound/soc.h>
+
+#include "w2cbw003-bt.h"
+/*
+ * Note this is a simple chip with no configuration interface, sample rate is
+ * determined automatically by examining the Master clock and Bit clock ratios
+ */
+
+// FIXME: adjust what the W2CBW003 PCM I/F supports...
+
+#define W2CBW003_RATES  (SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 |\
+			SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_96000 |\
+			SNDRV_PCM_RATE_192000)
+
+
+struct snd_soc_dai_driver w2cbw003_dai = {
+	.name = "W2CBW003",
+	.playback = {
+		.stream_name = "Playback",
+		.channels_min = 2,
+		.channels_max = 2,
+		.rates = W2CBW003_RATES,
+		.formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S24_LE,
+		},
+	.playback = {
+		.stream_name = "Capture",
+		.channels_min = 2,
+		.channels_max = 2,
+		.rates = W2CBW003_RATES,
+		.formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S24_LE,
+	},
+};
+EXPORT_SYMBOL_GPL(w2cbw003_dai);
+
+static int w2cbw003_soc_probe(struct snd_soc_codec *codec)
+{
+	int ret = 0;
+
+	/* register pcms */
+	ret = snd_soc_new_ac97_codec(codec, &soc_ac97_ops, 0);
+	if (ret < 0)
+		printk(KERN_ERR "w2cbw003: failed to create pcms\n");
+
+	return ret;
+}
+
+static int w2cbw003_soc_remove(struct snd_soc_codec *codec)
+{
+	if (codec == NULL)
+		return 0;
+	snd_soc_free_ac97_codec(codec);
+	return 0;
+}
+
+struct snd_soc_codec_driver soc_codec_dev_w2cbw003 = {
+	.probe = 	w2cbw003_soc_probe,
+	.remove = 	w2cbw003_soc_remove,
+// 	.write = ac97_write,
+// 	.read = ac97_read,
+};
+EXPORT_SYMBOL_GPL(soc_codec_dev_w2cbw003);
+
+
+static __devinit int w2cbw003_platform_probe(struct platform_device *pdev)
+{
+// 	w2cbw003_dai.dev = &pdev->dev;
+// 	return snd_soc_register_dai(&w2cbw003_dai);
+	return snd_soc_register_codec(&pdev->dev,
+			&soc_codec_dev_w2cbw003, &w2cbw003_dai, 1);
+}
+
+static int __devexit w2cbw003_platform_remove(struct platform_device *pdev)
+{
+// 	snd_soc_unregister_dai(&w2cbw003_dai);
+	snd_soc_unregister_codec(&pdev->dev);
+	return 0;
+}
+
+MODULE_ALIAS("platform:w2cbw003_codec_audio");
+
+static struct platform_driver w2cbw003_codec_driver = {
+	.driver = {
+			.name = "w2cbw003_codec_audio",
+			.owner = THIS_MODULE,
+	},
+
+	.probe = w2cbw003_platform_probe,
+	.remove = __devexit_p(w2cbw003_platform_remove),
+};
+
+static int __init w2cbw003_init(void)
+{
+	return platform_driver_register(&w2cbw003_codec_driver);
+}
+module_init(w2cbw003_init);
+
+static void __exit w2cbw003_exit(void)
+{
+	platform_driver_unregister(&w2cbw003_codec_driver);
+}
+module_exit(w2cbw003_exit);
+
+MODULE_DESCRIPTION("ASoC W2CBW003 driver");
+MODULE_AUTHOR("Neil Jones");
+MODULE_LICENSE("GPL");