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

Add the basic device tree based lookup.

Signed-off-by: Padmavathi Venna <padma.v@samsung.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
This commit is contained in:
Padmavathi Venna 2013-01-18 17:17:06 +05:30 committed by Mark Brown
parent 99b97fdccb
commit 28a4805833
4 changed files with 58 additions and 6 deletions
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14
Documentation/devicetree/bindings/sound/samsung,smdk-wm8994.txt Normal file
View File

@ -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 = <&i2s0>;
samsung,audio-codec = <&wm8994>;
};

18
arch/arm/boot/dts/exynos5250-smdk5250.dts
View File

@ -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>;
};
};

6
arch/arm/boot/dts/exynos5250.dtsi
View File

@ -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

26
sound/soc/samsung/smdk_wm8994.c
View File

@ -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,