Commit 5ef75e71 authored by Peter Ujfalusi's avatar Peter Ujfalusi Committed by Mark Brown
Browse files

ASoC: omap-abe-twl6040: Add device tree support 



When the board boots with device tree the driver will receive the name of the
card, DAPM routing map, phandle for the audio components described in the dts
file, mclk speed, and the possibility of detecting the jack detection.

The card will be set up based on this information.
Since the routing is provided via DT we can mark the card fully routed so
core can take care of disconnecting the unused pins.

Signed-off-by: default avatarPeter Ujfalusi <peter.ujfalusi@ti.com>
Reviwed-by: default avatarMark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: default avatarMark Brown <broonie@opensource.wolfsonmicro.com>
parent 0dcd4742

Documentation/devicetree/bindings/sound/omap-abe-twl6040.txt

0 → 100644
+91 −0
Original line number Diff line number Diff line 
* Texas Instruments OMAP4+ and twl6040 based audio setups



Required properties:

- compatible: "ti,abe-twl6040"

- ti,model: Name of the sound card ( for example "SDP4430")

- ti,mclk-freq: MCLK frequency for HPPLL operation

- ti,mcpdm: phandle for the McPDM node

- ti,twl6040: phandle for the twl6040 core node

- ti,audio-routing: List of connections between audio components.

  Each entry is a pair of strings, the first being the connection's sink,

  the second being the connection's source.



Optional properties:

- ti,dmic: phandle for the OMAP dmic node if the machine have it connected

- ti,jack_detection: Need to be set to <1> if the board capable to detect jack

  insertion, removal.



Available audio endpoints for the audio-routing table:



Board connectors:

 * Headset Stereophone

 * Earphone Spk

 * Ext Spk

 * Line Out

 * Vibrator

 * Headset Mic

 * Main Handset Mic

 * Sub Handset Mic

 * Line In

 * Digital Mic



twl6040 pins:

 * HSOL

 * HSOR

 * EP

 * HFL

 * HFR

 * AUXL

 * AUXR

 * VIBRAL

 * VIBRAR

 * HSMIC

 * MAINMIC

 * SUBMIC

 * AFML

 * AFMR



 * Headset Mic Bias

 * Main Mic Bias

 * Digital Mic1 Bias

 * Digital Mic2 Bias



Digital mic pins:

 * DMic



Example:



sound {

	compatible = "ti,abe-twl6040";

	ti,model = "SDP4430";



	ti,jack-detection = <1>;

	ti,mclk-freq = <38400000>;



	ti,mcpdm = <&mcpdm>;

	ti,dmic = <&dmic>;



	ti,twl6040 = <&twl6040>;



	/* Audio routing */

	ti,audio-routing =

		"Headset Stereophone", "HSOL",

		"Headset Stereophone", "HSOR",

		"Earphone Spk", "EP",

		"Ext Spk", "HFL",

		"Ext Spk", "HFR",

		"Line Out", "AUXL",

		"Line Out", "AUXR",

		"Vibrator", "VIBRAL",

		"Vibrator", "VIBRAR",

		"HSMIC", "Headset Mic",

		"Headset Mic", "Headset Mic Bias",

		"MAINMIC", "Main Handset Mic",

		"Main Handset Mic", "Main Mic Bias",

		"SUBMIC", "Sub Handset Mic",

		"Sub Handset Mic", "Main Mic Bias",

		"AFML", "Line In",

		"AFMR", "Line In",

		"DMic", "Digital Mic",

		"Digital Mic", "Digital Mic1 Bias";

};

sound/soc/omap/omap-abe-twl6040.c

+115 −30
Original line number Diff line number Diff line
@@ -25,6 +25,7 @@ 
#include <linux/mfd/twl6040.h>

#include <linux/platform_data/omap-abe-twl6040.h>

#include <linux/module.h>

#include <linux/of.h>



#include <sound/core.h>

#include <sound/pcm.h>
@@ -43,6 +44,8 @@ 
struct abe_twl6040 {

	int	jack_detection;	/* board can detect jack events */

	int	mclk_freq;	/* MCLK frequency speed for twl6040 */



	struct platform_device *dmic_codec_dev;

};



static int omap_abe_hw_params(struct snd_pcm_substream *substream,
@@ -185,17 +188,6 @@ static int omap_abe_twl6040_init(struct snd_soc_pcm_runtime *rtd) 
	int hs_trim;

	int ret = 0;



	/* Disable not connected paths if not used */

	twl6040_disconnect_pin(dapm, pdata->has_hs, "Headset Stereophone");

	twl6040_disconnect_pin(dapm, pdata->has_hf, "Ext Spk");

	twl6040_disconnect_pin(dapm, pdata->has_ep, "Earphone Spk");

	twl6040_disconnect_pin(dapm, pdata->has_aux, "Line Out");

	twl6040_disconnect_pin(dapm, pdata->has_vibra, "Vinrator");

	twl6040_disconnect_pin(dapm, pdata->has_hsmic, "Headset Mic");

	twl6040_disconnect_pin(dapm, pdata->has_mainmic, "Main Handset Mic");

	twl6040_disconnect_pin(dapm, pdata->has_submic, "Sub Handset Mic");

	twl6040_disconnect_pin(dapm, pdata->has_afm, "Line In");



	/*

	 * Configure McPDM offset cancellation based on the HSOTRIM value from

	 * twl6040.
@@ -216,6 +208,24 @@ static int omap_abe_twl6040_init(struct snd_soc_pcm_runtime *rtd) 
		twl6040_hs_jack_detect(codec, &hs_jack, SND_JACK_HEADSET);

	}



	/*

	 * NULL pdata means we booted with DT. In this case the routing is

	 * provided and the card is fully routed, no need to mark pins.

	 */

	if (!pdata)

		return ret;



	/* Disable not connected paths if not used */

	twl6040_disconnect_pin(dapm, pdata->has_hs, "Headset Stereophone");

	twl6040_disconnect_pin(dapm, pdata->has_hf, "Ext Spk");

	twl6040_disconnect_pin(dapm, pdata->has_ep, "Earphone Spk");

	twl6040_disconnect_pin(dapm, pdata->has_aux, "Line Out");

	twl6040_disconnect_pin(dapm, pdata->has_vibra, "Vinrator");

	twl6040_disconnect_pin(dapm, pdata->has_hsmic, "Headset Mic");

	twl6040_disconnect_pin(dapm, pdata->has_mainmic, "Main Handset Mic");

	twl6040_disconnect_pin(dapm, pdata->has_submic, "Sub Handset Mic");

	twl6040_disconnect_pin(dapm, pdata->has_afm, "Line In");



	return ret;

}
@@ -270,35 +280,77 @@ static struct snd_soc_card omap_abe_card = { 
static __devinit int omap_abe_probe(struct platform_device *pdev)

{

	struct omap_abe_twl6040_data *pdata = dev_get_platdata(&pdev->dev);

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

	struct snd_soc_card *card = &omap_abe_card;

	struct abe_twl6040 *priv;

	int num_links = 0;

	int ret;

	int ret = 0;



	card->dev = &pdev->dev;



	if (!pdata) {

		dev_err(&pdev->dev, "Missing pdata\n");

		return -ENODEV;

	}



	priv = devm_kzalloc(&pdev->dev, sizeof(struct abe_twl6040), GFP_KERNEL);

	if (priv == NULL)

		return -ENOMEM;



	if (pdata->card_name) {

		card->name = pdata->card_name;

	} else {

	priv->dmic_codec_dev = ERR_PTR(-EINVAL);



	if (node) {

		struct device_node *dai_node;



		if (snd_soc_of_parse_card_name(card, "ti,model")) {

			dev_err(&pdev->dev, "Card name is not provided\n");

			return -ENODEV;

		}



	priv->jack_detection = pdata->jack_detection;

	priv->mclk_freq = pdata->mclk_freq;

		ret = snd_soc_of_parse_audio_routing(card,

						"ti,audio-routing");

		if (ret) {

			dev_err(&pdev->dev,

				"Error while parsing DAPM routing\n");

			return ret;

		}



		dai_node = of_parse_phandle(node, "ti,mcpdm", 0);

		if (!dai_node) {

			dev_err(&pdev->dev, "McPDM node is not provided\n");

			return -EINVAL;

		}

		abe_twl6040_dai_links[0].cpu_dai_name  = NULL;

		abe_twl6040_dai_links[0].cpu_of_node = dai_node;



		dai_node = of_parse_phandle(node, "ti,dmic", 0);

		if (dai_node) {

			num_links = 2;

			abe_twl6040_dai_links[1].cpu_dai_name  = NULL;

			abe_twl6040_dai_links[1].cpu_of_node = dai_node;



			priv->dmic_codec_dev = platform_device_register_simple(

						"dmic-codec", -1, NULL, 0);

			if (IS_ERR(priv->dmic_codec_dev)) {

				dev_err(&pdev->dev,

					"Can't instantiate dmic-codec\n");

				return PTR_ERR(priv->dmic_codec_dev);

			}

		} else {

			num_links = 1;

		}



		of_property_read_u32(node, "ti,jack-detection",

				     &priv->jack_detection);

		of_property_read_u32(node, "ti,mclk-freq",

				     &priv->mclk_freq);

		if (!priv->mclk_freq) {

		dev_err(&pdev->dev, "MCLK frequency missing\n");

			dev_err(&pdev->dev, "MCLK frequency not provided\n");

			ret = -EINVAL;

			goto err_unregister;

		}



		omap_abe_card.fully_routed = 1;

	} else if (pdata) {

		if (pdata->card_name) {

			card->name = pdata->card_name;

		} else {

			dev_err(&pdev->dev, "Card name is not provided\n");

			return -ENODEV;

		}
@@ -307,15 +359,37 @@ static __devinit int omap_abe_probe(struct platform_device *pdev) 
		else

			num_links = 1;



		priv->jack_detection = pdata->jack_detection;

		priv->mclk_freq = pdata->mclk_freq;

	} else {

		dev_err(&pdev->dev, "Missing pdata\n");

		return -ENODEV;

	}





	if (!priv->mclk_freq) {

		dev_err(&pdev->dev, "MCLK frequency missing\n");

		ret = -ENODEV;

		goto err_unregister;

	}



	card->dai_link = abe_twl6040_dai_links;

	card->num_links = num_links;



	snd_soc_card_set_drvdata(card, priv);



	ret = snd_soc_register_card(card);

	if (ret)

	if (ret) {

		dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n",

			ret);

		goto err_unregister;

	}



	return 0;



err_unregister:

	if (!IS_ERR(priv->dmic_codec_dev))

		platform_device_unregister(priv->dmic_codec_dev);



	return ret;

}
@@ -323,17 +397,28 @@ static __devinit int omap_abe_probe(struct platform_device *pdev) 
static int __devexit omap_abe_remove(struct platform_device *pdev)

{

	struct snd_soc_card *card = platform_get_drvdata(pdev);

	struct abe_twl6040 *priv = snd_soc_card_get_drvdata(card);



	snd_soc_unregister_card(card);



	if (!IS_ERR(priv->dmic_codec_dev))

		platform_device_unregister(priv->dmic_codec_dev);



	return 0;

}



static const struct of_device_id omap_abe_of_match[] = {

	{.compatible = "ti,abe-twl6040", },

	{ },

};

MODULE_DEVICE_TABLE(of, omap_abe_of_match);



static struct platform_driver omap_abe_driver = {

	.driver = {

		.name = "omap-abe-twl6040",

		.owner = THIS_MODULE,

		.pm = &snd_soc_pm_ops,

		.of_match_table = omap_abe_of_match,

	},

	.probe = omap_abe_probe,

	.remove = __devexit_p(omap_abe_remove),

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