ASoC: Add ADAU1361/ADAU1761 audio CODEC support

This patch adds support for the Analog Devices ADAU1361 and ADAU1761 CODECs.
The device is a a low-power, 24-bit stereo audio CODEC with multiple analog
input and outputs, one digital microphone input and an I2S interface. The device
can be controlled either via I2C or SPI. The main difference between the two
variants is that the ADAU1761 has a built-in SigmaDSP, while the ADAU1361 has
not.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Mark Brown <broonie@linaro.org>

1 files changed, 60 insertions, 0 deletions

diff --git a/sound/soc/codecs/adau1761-i2c.c b/sound/soc/codecs/adau1761-i2c.c
new file mode 100644
index 000000000000..862796dec693
--- /dev/null
+++ b/sound/soc/codecs/adau1761-i2c.c
@@ -0,0 +1,60 @@
+/*
+ * Driver for ADAU1761/ADAU1461/ADAU1761/ADAU1961 codec
+ *
+ * Copyright 2014 Analog Devices Inc.
+ *  Author: Lars-Peter Clausen <lars@metafoo.de>
+ *
+ * Licensed under the GPL-2.
+ */
+
+#include <linux/i2c.h>
+#include <linux/mod_devicetable.h>
+#include <linux/module.h>
+#include <linux/regmap.h>
+#include <sound/soc.h>
+
+#include "adau1761.h"
+
+static int adau1761_i2c_probe(struct i2c_client *client,
+	const struct i2c_device_id *id)
+{
+	struct regmap_config config;
+
+	config = adau1761_regmap_config;
+	config.val_bits = 8;
+	config.reg_bits = 16;
+
+	return adau1761_probe(&client->dev,
+		devm_regmap_init_i2c(client, &config),
+		id->driver_data, NULL);
+}
+
+static int adau1761_i2c_remove(struct i2c_client *client)
+{
+	snd_soc_unregister_codec(&client->dev);
+	return 0;
+}
+
+static const struct i2c_device_id adau1761_i2c_ids[] = {
+	{ "adau1361", ADAU1361 },
+	{ "adau1461", ADAU1761 },
+	{ "adau1761", ADAU1761 },
+	{ "adau1961", ADAU1361 },
+	{ }
+};
+MODULE_DEVICE_TABLE(i2c, adau1761_i2c_ids);
+
+static struct i2c_driver adau1761_i2c_driver = {
+	.driver = {
+		.name = "adau1761",
+		.owner = THIS_MODULE,
+	},
+	.probe = adau1761_i2c_probe,
+	.remove = adau1761_i2c_remove,
+	.id_table = adau1761_i2c_ids,
+};
+module_i2c_driver(adau1761_i2c_driver);
+
+MODULE_DESCRIPTION("ASoC ADAU1361/ADAU1461/ADAU1761/ADAU1961 CODEC I2C driver");
+MODULE_AUTHOR("Lars-Peter Clausen <lars@metafoo.de>");
+MODULE_LICENSE("GPL");