Support for loading the snd-soc-dummy via DeviceTree.
This is useful to create dummy codec devices where we need to have some
DAI links without a real Codec.
Signed-off-by: Judy Hsiao <judyhsiao@xxxxxxxxxxxx>
---
.../devicetree/bindings/sound/snd-soc-dummy.txt | 16 ++++++++++++++++
sound/soc/soc-utils.c | 11 +++++++++++
2 files changed, 27 insertions(+)
create mode 100644 Documentation/devicetree/bindings/sound/snd-soc-dummy.txt
diff --git a/Documentation/devicetree/bindings/sound/snd-soc-dummy.txt b/Documentation/devicetree/bindings/sound/snd-soc-dummy.txt
new file mode 100644
index 000000000000..7fa8c5751e62
--- /dev/null
+++ b/Documentation/devicetree/bindings/sound/snd-soc-dummy.txt
@@ -0,0 +1,16 @@
+* snd-soc-dummy
+
+This node models the snd-soc-dummy.
+This is useful to create dummy codec devices where we need to have
+some DAI links without a real Codec.
+
+Required properties:
+- compatible : "asoc,snd-soc-dummy"
+
+
+Example:
+
+dummy_codec {
+ compatible = "asoc,snd-soc-dummy";
+ #sound-dai-cells = <0>;
+};
diff --git a/sound/soc/soc-utils.c b/sound/soc/soc-utils.c
index 299b5d6ebfd1..def2cc687415 100644
--- a/sound/soc/soc-utils.c
+++ b/sound/soc/soc-utils.c
@@ -7,6 +7,8 @@
// Author: Mark Brown <broonie@xxxxxxxxxxxxxxxxxxxxxxxxxxx>
// Liam Girdwood <lrg@xxxxxxxxxxxxxxx>
+#include <linux/module.h>
+#include <linux/of.h>
#include <linux/platform_device.h>
#include <linux/export.h>
#include <sound/core.h>
@@ -181,9 +183,18 @@ static int snd_soc_dummy_probe(struct platform_device *pdev)
return ret;
}
+#ifdef CONFIG_OF
+static const struct of_device_id soc_dummy_device_id[] = {
+ { .compatible = "asoc,snd-soc-dummy" },
+ {}
+};
+MODULE_DEVICE_TABLE(of, soc_dummy_device_id);
+#endif
+
static struct platform_driver soc_dummy_driver = {
.driver = {
.name = "snd-soc-dummy",
+ .of_match_table = of_match_ptr(soc_dummy_device_id),
},
.probe = snd_soc_dummy_probe,
};
--
2.31.0
