ASoC: omap-dmic: Add device tree bindings

Device tree support for OMAP4+ dmic cpu dai driver.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Reviewed-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Liam Girdwood <lrg@ti.com>

diff --git a/Documentation/devicetree/bindings/sound/omap-dmic.txt b/Documentation/devicetree/bindings/sound/omap-dmic.txt
new file mode 100644 (file)
index 0000000..fd8105f
--- /dev/null
+++ b/Documentation/devicetree/bindings/sound/omap-dmic.txt
@@ -0,0 +1,21 @@
+* Texas Instruments OMAP4+ Digital Microphone Module
+
+Required properties:
+- compatible: "ti,omap4-dmic"
+- reg: Register location and size as an array:
+       <MPU access base address, size>,
+       <L3 interconnect address, size>;
+- interrupts: Interrupt number for DMIC
+- interrupt-parent: The parent interrupt controller
+- ti,hwmods: Name of the hwmod associated with OMAP dmic IP
+
+Example:
+
+dmic: dmic@4012e000 {
+       compatible = "ti,omap4-dmic";
+       reg = <0x4012e000 0x7f>, /* MPU private access */
+             <0x4902e000 0x7f>; /* L3 Interconnect */
+       interrupts = <0 114 0x4>;
+       interrupt-parent = <&gic>;
+       ti,hwmods = "dmic";
+};

diff --git a/sound/soc/omap/omap-dmic.c b/sound/soc/omap/omap-dmic.c
index 4dcb5a7e40e874c37440cbcf82073844ebf6d4d7..75f5dca0e8d2c0a1dd4d107ece0cd2023c9ad583 100644 (file)
--- a/sound/soc/omap/omap-dmic.c
+++ b/sound/soc/omap/omap-dmic.c
@@ -32,6 +32,7 @@
 #include <linux/io.h>
 #include <linux/slab.h>
 #include <linux/pm_runtime.h>
+#include <linux/of_device.h>
 #include <plat/dma.h>
 
 #include <sound/core.h>
@@ -528,10 +529,17 @@ static int __devexit asoc_dmic_remove(struct platform_device *pdev)
        return 0;
 }
 
+static const struct of_device_id omap_dmic_of_match[] = {
+       { .compatible = "ti,omap4-dmic", },
+       { }
+};
+MODULE_DEVICE_TABLE(of, omap_dmic_of_match);
+
 static struct platform_driver asoc_dmic_driver = {
        .driver = {
                .name = "omap-dmic",
                .owner = THIS_MODULE,
+               .of_match_table = omap_dmic_of_match,
        },
        .probe = asoc_dmic_probe,
        .remove = __devexit_p(asoc_dmic_remove),