ASoC: add DT bindings for cs4270

Signed-off-by: Daniel Mack <zonque@gmail.com>
Acked-by: Timur Tabi <timur@freescale.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

diff --git a/Documentation/devicetree/bindings/sound/cs4270.txt b/Documentation/devicetree/bindings/sound/cs4270.txt
new file mode 100644 (file)
index 0000000..7f0bfd8
--- /dev/null
+++ b/Documentation/devicetree/bindings/sound/cs4270.txt
@@ -0,0 +1,16 @@
+CS4270 audio CODEC
+
+The driver for this device currently only supports I2C.
+
+Required properties:
+
+  - compatible : "cirrus,cs4270"
+
+  - reg : the I2C address of the device for I2C
+
+Example:
+
+codec: cs4270@48 {
+       compatible = "cirrus,cs4270";
+       reg = <0x48>;
+};

diff --git a/sound/soc/codecs/cs4270.c b/sound/soc/codecs/cs4270.c
index 047917f0b8aef6c54d82f618db30b706fe72636f..4b71b01ecbcd7f012b77145db3ba841c6d369225 100644 (file)
--- a/sound/soc/codecs/cs4270.c
+++ b/sound/soc/codecs/cs4270.c
@@ -29,6 +29,7 @@
 #include <linux/i2c.h>
 #include <linux/delay.h>
 #include <linux/regulator/consumer.h>
+#include <linux/of_device.h>
 
 /*
  * The codec isn't really big-endian or little-endian, since the I2S
@@ -639,6 +640,15 @@ static const struct snd_soc_codec_driver soc_codec_device_cs4270 = {
        .reg_cache_default =    cs4270_default_reg_cache,
 };
 
+/*
+ * cs4270_of_match - the device tree bindings
+ */
+static const struct of_device_id cs4270_of_match[] = {
+       { .compatible = "cirrus,cs4270", },
+       { }
+};
+MODULE_DEVICE_TABLE(of, cs4270_of_match);
+
 /**
  * cs4270_i2c_probe - initialize the I2C interface of the CS4270
  * @i2c_client: the I2C client object
@@ -718,6 +728,7 @@ static struct i2c_driver cs4270_i2c_driver = {
        .driver = {
                .name = "cs4270",
                .owner = THIS_MODULE,
+               .of_match_table = cs4270_of_match,
        },
        .id_table = cs4270_id,
        .probe = cs4270_i2c_probe,