Add the basic device tree based lookup.
Signed-off-by: Padmavathi Venna <padma.v@xxxxxxxxxxx>
---
.../bindings/sound/samsung,smdk-wm8994.txt | 14 ++++++++++
arch/arm/boot/dts/exynos5250-smdk5250.dts | 12 +++++++++
sound/soc/samsung/smdk_wm8994.c | 26 ++++++++++++++++++++
3 files changed, 52 insertions(+), 0 deletions(-)
create mode 100644 Documentation/devicetree/bindings/sound/samsung,smdk-wm8994.txt
diff --git a/Documentation/devicetree/bindings/sound/samsung,smdk-wm8994.txt b/Documentation/devicetree/bindings/sound/samsung,smdk-wm8994.txt
new file mode 100644
index 0000000..13cb189
--- /dev/null
+++ b/Documentation/devicetree/bindings/sound/samsung,smdk-wm8994.txt
@@ -0,0 +1,14 @@
+Samsung SMDK audio complex
+
+Required properties:
+- compatible : "samsung,smdk-wm8994"
+- samsung,i2s-controller: The phandle of the Samsung I2S0 controller
+- samsung,audio-codec: The phandle of the WM8994 audio codec
+Example:
+
+sound {
+ compatible = "samsung,smdk-wm8994";
+
+ samsung,i2s-controller = <&i2s_0>;
+ samsung,audio-codec = <&wm8994>;
+};
diff --git a/arch/arm/boot/dts/exynos5250-smdk5250.dts b/arch/arm/boot/dts/exynos5250-smdk5250.dts
index 8d6e331..cf988fc 100644
--- a/arch/arm/boot/dts/exynos5250-smdk5250.dts
+++ b/arch/arm/boot/dts/exynos5250-smdk5250.dts
@@ -53,6 +53,11 @@
compatible = "samsung,s524ad0xd1";
reg = <0x51>;
};
+
+ wm8994: wm8994@1a {
+ compatible = "wlf,wm8994";
+ reg = <0x1a>;
+ };
};
i2c@12C80000 {
@@ -180,4 +185,11 @@
i2s_2: i2s@12D70000 {
status = "disabled";
};
+
+ sound {
+ compatible = "samsung,smdk-wm8994";
+
+ samsung,i2s-controller = <&i2s_0>;
+ samsung,audio-codec = <&wm8994>;
+ };
};
diff --git a/sound/soc/samsung/smdk_wm8994.c b/sound/soc/samsung/smdk_wm8994.c
index dd0aa8c..2f3e2b8 100644
--- a/sound/soc/samsung/smdk_wm8994.c
+++ b/sound/soc/samsung/smdk_wm8994.c
@@ -10,6 +10,7 @@
#include "../codecs/wm8994.h"
#include <sound/pcm_params.h>
#include <linux/module.h>
+#include <linux/of.h>
/*
* Default CFG switch settings to use this driver:
@@ -153,9 +154,25 @@ static struct snd_soc_card smdk = {
static int __devinit smdk_audio_probe(struct platform_device *pdev)
{
int ret;
+ struct device_node *np = pdev->dev.of_node;
struct snd_soc_card *card = &smdk;
card->dev = &pdev->dev;
+
+ if (np) {
+ smdk_dai[0].cpu_dai_name = NULL;
+ smdk_dai[0].cpu_of_node = of_parse_phandle(np,
+ "samsung,i2s-controller", 0);
+ if (!smdk_dai[0].cpu_of_node) {
+ dev_err(&pdev->dev,
+ "Property 'samsung,i2s-controller' missing or invalid\n");
+ ret = -EINVAL;
+ }
+
+ smdk_dai[0].platform_name = NULL;
+ smdk_dai[0].platform_of_node = smdk_dai[0].cpu_of_node;
+ }
+
ret = snd_soc_register_card(card);
if (ret)
@@ -173,10 +190,19 @@ static int __devexit smdk_audio_remove(struct platform_device *pdev)
return 0;
}
+#ifdef CONFIG_OF
+static const struct of_device_id samsung_wm8994_of_match[] = {
+ { .compatible = "samsung,smdk-wm8994", },
+ {},
+};
+MODULE_DEVICE_TABLE(of, samsung_wm8994_of_match);
+#endif /* CONFIG_OF */
+
static struct platform_driver smdk_audio_driver = {
.driver = {
.name = "smdk-audio",
.owner = THIS_MODULE,
+ .of_match_table = of_match_ptr(samsung_wm8994_of_match),
},
.probe = smdk_audio_probe,
.remove = __devexit_p(smdk_audio_remove),
--
1.7.4.4
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