Commit 28a48058 authored by Padmavathi Venna's avatar Padmavathi Venna Committed by Mark Brown
Browse files

ASoC: SMDK: WM8994: Add device tree support for machine file 



Add the basic device tree based lookup.

Signed-off-by: default avatarPadmavathi Venna <padma.v@samsung.com>
Signed-off-by: default avatarMark Brown <broonie@opensource.wolfsonmicro.com>
parent 99b97fdc

Documentation/devicetree/bindings/sound/samsung,smdk-wm8994.txt

0 → 100644
+14 −0
Original line number Diff line number Diff line 
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 = <&i2s0>;

		samsung,audio-codec = <&wm8994>;

};

arch/arm/boot/dts/exynos5250-smdk5250.dts

+15 −3
Original line number Diff line number Diff line
@@ -49,6 +49,11 @@ 
			compatible = "samsung,s524ad0xd1";

			reg = <0x51>;

		};



		wm8994: wm8994@1a {

			 compatible = "wlf,wm8994";

			 reg = <0x1a>;

		};

	};



	i2c@121D0000 {
@@ -205,17 +210,24 @@ 
		samsung,mfc-l = <0x51000000 0x800000>;

	};



	i2s@03830000 {

	i2s0: i2s@03830000 {

		gpios = <&gpz 0 2 0 0>, <&gpz 1 2 0 0>, <&gpz 2 2 0 0>,

			<&gpz 3 2 0 0>, <&gpz 4 2 0 0>, <&gpz 5 2 0 0>,

			<&gpz 6 2 0 0>;

	};



	i2s@12D60000 {

	i2s1: i2s@12D60000 {

		status = "disabled";

	};



	i2s@12D70000 {

	i2s2: i2s@12D70000 {

		status = "disabled";

	};



	sound {

		compatible = "samsung,smdk-wm8994";



		samsung,i2s-controller = <&i2s0>;

		samsung,audio-codec = <&wm8994>;

	};

};

arch/arm/boot/dts/exynos5250.dtsi

+3 −3
Original line number Diff line number Diff line
@@ -269,7 +269,7 @@ 
		#size-cells = <0>;

	};



	i2s@03830000 {

	i2s0: i2s@03830000 {

		compatible = "samsung,i2s-v5";

		reg = <0x03830000 0x100>;

		dmas = <&pdma0 10
@@ -282,7 +282,7 @@ 
		samsung,idma-addr = <0x03000000>;

	};



	i2s@12D60000 {

	i2s1: i2s@12D60000 {

		compatible = "samsung,i2s-v5";

		reg = <0x12D60000 0x100>;

		dmas = <&pdma1 12
@@ -290,7 +290,7 @@ 
		dma-names = "tx", "rx";

	};



	i2s@12D70000 {

	i2s2: i2s@12D70000 {

		compatible = "samsung,i2s-v5";

		reg = <0x12D70000 0x100>;

		dmas = <&pdma0 12

sound/soc/samsung/smdk_wm8994.c

+26 −0
Original line number Diff line number Diff line
@@ -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 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 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		= smdk_audio_remove,

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