Commit e968194b authored by Shawn Guo's avatar Shawn Guo Committed by Mark Brown
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ASoC: mxs: add device tree support for mxs-sgtl5000 



Add device tree probe for mxs-sgtl5000 machine driver.

Signed-off-by: default avatarShawn Guo <shawn.guo@linaro.org>
Signed-off-by: default avatarMark Brown <broonie@opensource.wolfsonmicro.com>
parent 08641c7c

Documentation/devicetree/bindings/sound/mxs-audio-sgtl5000.txt

0 → 100644
+17 −0
Original line number Diff line number Diff line 
* Freescale MXS audio complex with SGTL5000 codec



Required properties:

- compatible: "fsl,mxs-audio-sgtl5000"

- model: The user-visible name of this sound complex

- saif-controllers: The phandle list of the MXS SAIF controller

- audio-codec: The phandle of the SGTL5000 audio codec



Example:



sound {

	compatible = "fsl,imx28-evk-sgtl5000",

		     "fsl,mxs-audio-sgtl5000";

	model = "imx28-evk-sgtl5000";

	saif-controllers = <&saif0 &saif1>;

	audio-codec = <&sgtl5000>;

};

sound/soc/mxs/mxs-sgtl5000.c

+46 −0
Original line number Diff line number Diff line
@@ -18,6 +18,8 @@ 


#include <linux/module.h>

#include <linux/device.h>

#include <linux/of.h>

#include <linux/of_device.h>

#include <sound/core.h>

#include <sound/pcm.h>

#include <sound/soc.h>
@@ -110,11 +112,48 @@ static struct snd_soc_card mxs_sgtl5000 = { 
	.num_links	= ARRAY_SIZE(mxs_sgtl5000_dai),

};



static int __devinit mxs_sgtl5000_probe_dt(struct platform_device *pdev)

{

	struct device_node *np = pdev->dev.of_node;

	struct device_node *saif_np[2], *codec_np;

	int i, ret = 0;



	if (!np)

		return 1; /* no device tree */



	saif_np[0] = of_parse_phandle(np, "saif-controllers", 0);

	saif_np[1] = of_parse_phandle(np, "saif-controllers", 1);

	codec_np = of_parse_phandle(np, "audio-codec", 0);

	if (!saif_np[0] || !saif_np[1] || !codec_np) {

		dev_err(&pdev->dev, "phandle missing or invalid\n");

		return -EINVAL;

	}



	for (i = 0; i < 2; i++) {

		mxs_sgtl5000_dai[i].codec_name = NULL;

		mxs_sgtl5000_dai[i].codec_of_node = codec_np;

		mxs_sgtl5000_dai[i].cpu_dai_name = NULL;

		mxs_sgtl5000_dai[i].cpu_dai_of_node = saif_np[i];

		mxs_sgtl5000_dai[i].platform_name = NULL;

		mxs_sgtl5000_dai[i].platform_of_node = saif_np[i];

	}



	of_node_put(codec_np);

	of_node_put(saif_np[0]);

	of_node_put(saif_np[1]);



	return ret;

}



static int __devinit mxs_sgtl5000_probe(struct platform_device *pdev)

{

	struct snd_soc_card *card = &mxs_sgtl5000;

	int ret;



	ret = mxs_sgtl5000_probe_dt(pdev);

	if (ret < 0)

		return ret;



	/*

	 * Set an init clock(11.28Mhz) for sgtl5000 initialization(i2c r/w).

	 * The Sgtl5000 sysclk is derived from saif0 mclk and it's range
@@ -148,10 +187,17 @@ static int __devexit mxs_sgtl5000_remove(struct platform_device *pdev) 
	return 0;

}



static const struct of_device_id mxs_sgtl5000_dt_ids[] = {

	{ .compatible = "fsl,mxs-audio-sgtl5000", },

	{ /* sentinel */ }

};

MODULE_DEVICE_TABLE(of, mxs_sgtl5000_dt_ids);



static struct platform_driver mxs_sgtl5000_audio_driver = {

	.driver = {

		.name = "mxs-sgtl5000",

		.owner = THIS_MODULE,

		.of_match_table = mxs_sgtl5000_dt_ids,

	},

	.probe = mxs_sgtl5000_probe,

	.remove = __devexit_p(mxs_sgtl5000_remove),