ASoC: Tegra DAS: Add device tree binding

Signed-off-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

diff --git a/Documentation/devicetree/bindings/sound/tegra20-das.txt b/Documentation/devicetree/bindings/sound/tegra20-das.txt
new file mode 100644 (file)
index 0000000..6de3a7e
--- /dev/null
+++ b/Documentation/devicetree/bindings/sound/tegra20-das.txt
@@ -0,0 +1,12 @@
+NVIDIA Tegra 20 DAS (Digital Audio Switch) controller
+
+Required properties:
+- compatible : "nvidia,tegra20-das"
+- reg : Should contain DAS registers location and length
+
+Example:
+
+das@70000c00 {
+       compatible = "nvidia,tegra20-das";
+       reg = <0x70000c00 0x80>;
+};

diff --git a/sound/soc/tegra/tegra_das.c b/sound/soc/tegra/tegra_das.c
index fa3a442..5b82b4e 100644 (file)
--- a/sound/soc/tegra/tegra_das.c
+++ b/sound/soc/tegra/tegra_das.c
@@ -225,11 +225,18 @@ static int __devexit tegra_das_remove(struct platform_device *pdev)
        return 0;
 }
 
+static const struct of_device_id tegra_das_of_match[] __devinitconst = {
+       { .compatible = "nvidia,tegra20-das", },
+       {},
+};
+
 static struct platform_driver tegra_das_driver = {
        .probe = tegra_das_probe,
        .remove = __devexit_p(tegra_das_remove),
        .driver = {
                .name = DRV_NAME,
+               .owner = THIS_MODULE,
+               .of_match_table = tegra_das_of_match,
        },
 };
 module_platform_driver(tegra_das_driver);
@@ -238,3 +245,4 @@ MODULE_AUTHOR("Stephen Warren <swarren@nvidia.com>");
 MODULE_DESCRIPTION("Tegra DAS driver");
 MODULE_LICENSE("GPL");
 MODULE_ALIAS("platform:" DRV_NAME);
+MODULE_DEVICE_TABLE(of, tegra_das_of_match);