ASoC: Add device tree binding for WM8741

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

diff --git a/Documentation/devicetree/bindings/sound/wm8741.txt b/Documentation/devicetree/bindings/sound/wm8741.txt
new file mode 100644 (file)
index 0000000..74bda58
--- /dev/null
+++ b/Documentation/devicetree/bindings/sound/wm8741.txt
@@ -0,0 +1,18 @@
+WM8741 audio CODEC
+
+This device supports both I2C and SPI (configured with pin strapping
+on the board).
+
+Required properties:
+
+  - compatible : "wlf,wm8741"
+
+  - reg : the I2C address of the device for I2C, the chip select
+          number for SPI.
+
+Example:
+
+codec: wm8741@1a {
+       compatible = "wlf,wm8741";
+       reg = <0x1a>;
+};

diff --git a/sound/soc/codecs/wm8741.c b/sound/soc/codecs/wm8741.c
index 9f6e952..78c9e5a 100644 (file)
--- a/sound/soc/codecs/wm8741.c
+++ b/sound/soc/codecs/wm8741.c
@@ -21,6 +21,7 @@
 #include <linux/platform_device.h>
 #include <linux/regulator/consumer.h>
 #include <linux/slab.h>
+#include <linux/of_device.h>
 #include <sound/core.h>
 #include <sound/pcm.h>
 #include <sound/pcm_params.h>
@@ -498,6 +499,12 @@ static struct snd_soc_codec_driver soc_codec_dev_wm8741 = {
        .reg_cache_default = wm8741_reg_defaults,
 };
 
+static const struct of_device_id wm8741_of_match[] = {
+       { .compatible = "wlf,wm8741", },
+       { }
+};
+MODULE_DEVICE_TABLE(of, wm8741_of_match);
+
 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
 static int wm8741_i2c_probe(struct i2c_client *i2c,
                            const struct i2c_device_id *id)
@@ -541,6 +548,7 @@ static struct i2c_driver wm8741_i2c_driver = {
        .driver = {
                .name = "wm8741",
                .owner = THIS_MODULE,
+               .of_match_table = wm8741_of_match,
        },
        .probe =    wm8741_i2c_probe,
        .remove =   wm8741_i2c_remove,
@@ -579,6 +587,7 @@ static struct spi_driver wm8741_spi_driver = {
        .driver = {
                .name   = "wm8741",
                .owner  = THIS_MODULE,
+               .of_match_table = wm8741_of_match,
        },
        .probe          = wm8741_spi_probe,
        .remove         = __devexit_p(wm8741_spi_remove),