From: Greg Hackmann <ghackmann@google.com>
Date: Fri, 26 Feb 2016 19:00:03 +0000 (+0000)
Subject: BACKPORT: staging: goldfish: audio: add devicetree bindings
X-Git-Tag: firefly_0821_release~176^2~83
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=8d8394ca6f6e60cf03a1a4b016a130df506beeb1;p=firefly-linux-kernel-4.4.55.git

BACKPORT: staging: goldfish: audio: add devicetree bindings

Introduce devicetree bindings to the Goldfish staging audio driver.

Signed-off-by: Greg Hackmann <ghackmann@google.com>
Signed-off-by: Jin Qian <jinqian@android.com>
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
(cherry picked from commit 283ded10312a3b75e384313f6f529ec2c636cf2c)

Change-Id: Ib75d3a4cac7353084a8da18a96fb298a759bacc0
---

diff --git a/Documentation/devicetree/bindings/goldfish/audio.txt b/Documentation/devicetree/bindings/goldfish/audio.txt
new file mode 100644
index 000000000000..d043fda433ba
--- /dev/null
+++ b/Documentation/devicetree/bindings/goldfish/audio.txt
@@ -0,0 +1,17 @@
+Android Goldfish Audio
+
+Android goldfish audio device generated by android emulator.
+
+Required properties:
+
+- compatible : should contain "google,goldfish-audio" to match emulator
+- reg        : <registers mapping>
+- interrupts : <interrupt mapping>
+
+Example:
+
+	goldfish_audio@9030000 {
+		compatible = "google,goldfish-audio";
+		reg = <0x9030000 0x100>;
+		interrupts = <0x4>;
+	};
diff --git a/drivers/staging/goldfish/goldfish_audio.c b/drivers/staging/goldfish/goldfish_audio.c
index b0927e49d0a8..8841680ced9f 100644
--- a/drivers/staging/goldfish/goldfish_audio.c
+++ b/drivers/staging/goldfish/goldfish_audio.c
@@ -344,11 +344,18 @@ static int goldfish_audio_remove(struct platform_device *pdev)
 	return 0;
 }
 
+static const struct of_device_id goldfish_audio_of_match[] = {
+	{ .compatible = "google,goldfish-audio", },
+	{},
+};
+MODULE_DEVICE_TABLE(of, goldfish_audio_of_match);
+
 static struct platform_driver goldfish_audio_driver = {
 	.probe		= goldfish_audio_probe,
 	.remove		= goldfish_audio_remove,
 	.driver = {
-		.name = "goldfish_audio"
+		.name = "goldfish_audio",
+		.of_match_table = goldfish_audio_of_match,
 	}
 };