ASoC: Add device tree binding for WM8750

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Liam Girdwood <lrg@ti.com>

diff --git a/Documentation/devicetree/bindings/sound/wm8750.txt b/Documentation/devicetree/bindings/sound/wm8750.txt
new file mode 100644 (file)
index 0000000..8db239f
--- /dev/null
+++ b/Documentation/devicetree/bindings/sound/wm8750.txt
@@ -0,0 +1,18 @@
+WM8750 and WM8987 audio CODECs
+
+These devices support both I2C and SPI (configured with pin strapping
+on the board).
+
+Required properties:
+
+  - compatible : "wlf,wm8750" or "wlf,wm8987"
+
+  - reg : the I2C address of the device for I2C, the chip select
+          number for SPI.
+
+Example:
+
+codec: wm8750@1a {
+       compatible = "wlf,wm8750";
+       reg = <0x1a>;
+};

diff --git a/sound/soc/codecs/wm8750.c b/sound/soc/codecs/wm8750.c
index 82ac5fcaa2b22746f9880531f58f8c91784a5100..bbb697470d82a438501e0771f1efa868c236a25c 100644 (file)
--- a/sound/soc/codecs/wm8750.c
+++ b/sound/soc/codecs/wm8750.c
@@ -21,6 +21,7 @@
 #include <linux/platform_device.h>
 #include <linux/spi/spi.h>
 #include <linux/slab.h>
+#include <linux/of_device.h>
 #include <sound/core.h>
 #include <sound/pcm.h>
 #include <sound/pcm_params.h>
@@ -751,6 +752,13 @@ static struct snd_soc_codec_driver soc_codec_dev_wm8750 = {
        .reg_cache_default = wm8750_reg,
 };
 
+static const struct of_device_id wm8750_of_match[] = {
+       { .compatible = "wlf,wm8750", },
+       { .compatible = "wlf,wm8987", },
+       { }
+};
+MODULE_DEVICE_TABLE(of, wm8750_of_match);
+
 #if defined(CONFIG_SPI_MASTER)
 static int __devinit wm8750_spi_probe(struct spi_device *spi)
 {
@@ -789,6 +797,7 @@ static struct spi_driver wm8750_spi_driver = {
        .driver = {
                .name   = "wm8750-codec",
                .owner  = THIS_MODULE,
+               .of_match_table = wm8750_of_match,
        },
        .id_table       = wm8750_spi_ids,
        .probe          = wm8750_spi_probe,
@@ -835,6 +844,7 @@ static struct i2c_driver wm8750_i2c_driver = {
        .driver = {
                .name = "wm8750-codec",
                .owner = THIS_MODULE,
+               .of_match_table = wm8750_of_match,
        },
        .probe =    wm8750_i2c_probe,
        .remove =   __devexit_p(wm8750_i2c_remove),