Add bindings to be able to probe the dmic codec driver via device tree. The device tree entry of a machine driver can use phandle to provide the device node for it's dai link structure.
Signed-off-by: Peter Ujfalusi peter.ujfalusi@ti.com --- .../devicetree/bindings/sound/dmic-codec.txt | 18 ++++++++++++++++++ sound/soc/codecs/dmic.c | 6 ++++++ 2 files changed, 24 insertions(+), 0 deletions(-) create mode 100644 Documentation/devicetree/bindings/sound/dmic-codec.txt
diff --git a/Documentation/devicetree/bindings/sound/dmic-codec.txt b/Documentation/devicetree/bindings/sound/dmic-codec.txt new file mode 100644 index 0000000..f23f2e3 --- /dev/null +++ b/Documentation/devicetree/bindings/sound/dmic-codec.txt @@ -0,0 +1,18 @@ +Generic platform independent codec driver to represent digital microphones + +The dmic codec driver basically a dummy driver which exports the needed hooks +to be used with digital microphone interfaces. + +Required properties: +- compatible : Must be "generic,dmic-codec"; + +Example: + +dmic_codec: dmic_codec@0 { /* generic DMIC codec */ + compatible = "generic,dmic-codec"; +}; + +sound { /* ASoC machine dirver */ + ... + dai-link,codec = <&dmic_codec>; +}; diff --git a/sound/soc/codecs/dmic.c b/sound/soc/codecs/dmic.c index 3e929f0..90e92f5 100644 --- a/sound/soc/codecs/dmic.c +++ b/sound/soc/codecs/dmic.c @@ -78,12 +78,18 @@ static int __devexit dmic_dev_remove(struct platform_device *pdev) return 0; }
+static const struct of_device_id dmic_of_match[] = { + {.compatible = "generic,dmic-codec", }, + { }, +}; +MODULE_DEVICE_TABLE(of, dmic_of_match); MODULE_ALIAS("platform:dmic-codec");
static struct platform_driver dmic_driver = { .driver = { .name = "dmic-codec", .owner = THIS_MODULE, + .of_match_table = dmic_of_match, }, .probe = dmic_dev_probe, .remove = __devexit_p(dmic_dev_remove),