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Commit a54f6f0c authored by Koro Chen's avatar Koro Chen Committed by Mark Brown
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ASoC: mediatek: Add machine driver for MAX98090 codec 



This is the DPCM based machine driver with MAX98090

Signed-off-by: default avatarKoro Chen <koro.chen@mediatek.com>
Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent ee0bcaff

Documentation/devicetree/bindings/sound/mt8173-max98090.txt

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MT8173 with MAX98090 CODEC



Required properties:

- compatible : "mediatek,mt8173-max98090"

- mediatek,audio-codec: the phandle of the MAX98090 audio codec



Example:



	sound {

		compatible = "mediatek,mt8173-max98090";

		mediatek,audio-codec = <&max98090>;

	};

sound/soc/mediatek/Kconfig

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@@ -7,3 +7,13 @@ config SND_SOC_MEDIATEK 
	  Select Y if you have such device.

	  Ex: MT8173



config SND_SOC_MT8173_MAX98090

	tristate "ASoC Audio driver for MT8173 with MAX98090 codec"

	depends on SND_SOC_MEDIATEK

	select SND_SOC_MAX98090

	help

	  This adds ASoC driver for Mediatek MT8173 boards

	  with the MAX98090 audio codec.

	  Select Y if you have such device.

	  If unsure select "N".

sound/soc/mediatek/Makefile

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# MTK Platform Support

obj-$(CONFIG_SND_SOC_MEDIATEK) += mtk-afe-pcm.o

# Machine support

obj-$(CONFIG_SND_SOC_MT8173_MAX98090) += mt8173-max98090.o

sound/soc/mediatek/mt8173-max98090.c

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/*

 * mt8173-max98090.c  --  MT8173 MAX98090 ALSA SoC machine driver

 *

 * Copyright (c) 2015 MediaTek Inc.

 * Author: Koro Chen <koro.chen@mediatek.com>

 *

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License version 2 and

 * only version 2 as published by the Free Software Foundation.

 *

 * This program is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 * GNU General Public License for more details.

 */



#include <linux/module.h>

#include <sound/soc.h>

#include <sound/jack.h>

#include <linux/gpio.h>

#include "../codecs/max98090.h"



static struct snd_soc_jack mt8173_max98090_jack;



static struct snd_soc_jack_pin mt8173_max98090_jack_pins[] = {

	{

		.pin	= "Headphone",

		.mask	= SND_JACK_HEADPHONE,

	},

	{

		.pin	= "Headset Mic",

		.mask	= SND_JACK_MICROPHONE,

	},

};



static const struct snd_soc_dapm_widget mt8173_max98090_widgets[] = {

	SND_SOC_DAPM_SPK("Speaker", NULL),

	SND_SOC_DAPM_MIC("Int Mic", NULL),

	SND_SOC_DAPM_HP("Headphone", NULL),

	SND_SOC_DAPM_MIC("Headset Mic", NULL),

};



static const struct snd_soc_dapm_route mt8173_max98090_routes[] = {

	{"Speaker", NULL, "SPKL"},

	{"Speaker", NULL, "SPKR"},

	{"DMICL", NULL, "Int Mic"},

	{"Headphone", NULL, "HPL"},

	{"Headphone", NULL, "HPR"},

	{"Headset Mic", NULL, "MICBIAS"},

	{"IN34", NULL, "Headset Mic"},

};



static const struct snd_kcontrol_new mt8173_max98090_controls[] = {

	SOC_DAPM_PIN_SWITCH("Speaker"),

	SOC_DAPM_PIN_SWITCH("Int Mic"),

	SOC_DAPM_PIN_SWITCH("Headphone"),

	SOC_DAPM_PIN_SWITCH("Headset Mic"),

};



static int mt8173_max98090_hw_params(struct snd_pcm_substream *substream,

				     struct snd_pcm_hw_params *params)

{

	struct snd_soc_pcm_runtime *rtd = substream->private_data;

	struct snd_soc_dai *codec_dai = rtd->codec_dai;



	return snd_soc_dai_set_sysclk(codec_dai, 0, params_rate(params) * 256,

				      SND_SOC_CLOCK_IN);

}



static struct snd_soc_ops mt8173_max98090_ops = {

	.hw_params = mt8173_max98090_hw_params,

};



static int mt8173_max98090_init(struct snd_soc_pcm_runtime *runtime)

{

	int ret;

	struct snd_soc_card *card = runtime->card;

	struct snd_soc_codec *codec = runtime->codec;



	/* enable jack detection */

	ret = snd_soc_card_jack_new(card, "Headphone", SND_JACK_HEADPHONE,

				    &mt8173_max98090_jack, NULL, 0);

	if (ret) {

		dev_err(card->dev, "Can't snd_soc_jack_new %d\n", ret);

		return ret;

	}



	ret = snd_soc_jack_add_pins(&mt8173_max98090_jack,

				    ARRAY_SIZE(mt8173_max98090_jack_pins),

				    mt8173_max98090_jack_pins);

	if (ret) {

		dev_err(card->dev, "Can't snd_soc_jack_add_pins %d\n", ret);

		return ret;

	}



	return max98090_mic_detect(codec, &mt8173_max98090_jack);

}



/* Digital audio interface glue - connects codec <---> CPU */

static struct snd_soc_dai_link mt8173_max98090_dais[] = {

	/* Front End DAI links */

	{

		.name = "MAX98090 Playback",

		.stream_name = "MAX98090 Playback",

		.cpu_dai_name = "DL1",

		.platform_name = "11220000.mt8173-afe-pcm",

		.codec_name = "snd-soc-dummy",

		.codec_dai_name = "snd-soc-dummy-dai",

		.trigger = {SND_SOC_DPCM_TRIGGER_POST, SND_SOC_DPCM_TRIGGER_POST},

		.dynamic = 1,

		.dpcm_playback = 1,

	},

	{

		.name = "MAX98090 Capture",

		.stream_name = "MAX98090 Capture",

		.cpu_dai_name = "VUL",

		.platform_name = "11220000.mt8173-afe-pcm",

		.codec_name = "snd-soc-dummy",

		.codec_dai_name = "snd-soc-dummy-dai",

		.trigger = {SND_SOC_DPCM_TRIGGER_POST, SND_SOC_DPCM_TRIGGER_POST},

		.dynamic = 1,

		.dpcm_capture = 1,

	},

	/* Back End DAI links */

	{

		.name = "Codec",

		.cpu_dai_name = "I2S",

		.platform_name = "11220000.mt8173-afe-pcm",

		.no_pcm = 1,

		.codec_dai_name = "HiFi",

		.init = mt8173_max98090_init,

		.ops = &mt8173_max98090_ops,

		.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |

			   SND_SOC_DAIFMT_CBS_CFS,

		.dpcm_playback = 1,

		.dpcm_capture = 1,

	},

};



static struct snd_soc_card mt8173_max98090_card = {

	.name = "mt8173-max98090",

	.dai_link = mt8173_max98090_dais,

	.num_links = ARRAY_SIZE(mt8173_max98090_dais),

	.controls = mt8173_max98090_controls,

	.num_controls = ARRAY_SIZE(mt8173_max98090_controls),

	.dapm_widgets = mt8173_max98090_widgets,

	.num_dapm_widgets = ARRAY_SIZE(mt8173_max98090_widgets),

	.dapm_routes = mt8173_max98090_routes,

	.num_dapm_routes = ARRAY_SIZE(mt8173_max98090_routes),

};



static int mt8173_max98090_dev_probe(struct platform_device *pdev)

{

	struct snd_soc_card *card = &mt8173_max98090_card;

	struct device_node *codec_node;

	int ret, i;



	codec_node = of_parse_phandle(pdev->dev.of_node,

				      "mediatek,audio-codec", 0);

	if (!codec_node) {

		dev_err(&pdev->dev,

			"Property 'audio-codec' missing or invalid\n");

		return -EINVAL;

	}

	for (i = 0; i < card->num_links; i++) {

		if (mt8173_max98090_dais[i].codec_name)

			continue;

		mt8173_max98090_dais[i].codec_of_node = codec_node;

	}

	card->dev = &pdev->dev;



	ret = snd_soc_register_card(card);

	if (ret)

		dev_err(&pdev->dev, "%s snd_soc_register_card fail %d\n",

			__func__, ret);

	return ret;

}



static int mt8173_max98090_dev_remove(struct platform_device *pdev)

{

	struct snd_soc_card *card = platform_get_drvdata(pdev);



	snd_soc_unregister_card(card);

	return 0;

}



static const struct of_device_id mt8173_max98090_dt_match[] = {

	{ .compatible = "mediatek,mt8173-max98090", },

	{ }

};

MODULE_DEVICE_TABLE(of, mt8173_max98090_dt_match);



static struct platform_driver mt8173_max98090_driver = {

	.driver = {

		   .name = "mt8173-max98090",

		   .owner = THIS_MODULE,

		   .of_match_table = mt8173_max98090_dt_match,

#ifdef CONFIG_PM

		   .pm = &snd_soc_pm_ops,

#endif

	},

	.probe = mt8173_max98090_dev_probe,

	.remove = mt8173_max98090_dev_remove,

};



module_platform_driver(mt8173_max98090_driver);



/* Module information */

MODULE_DESCRIPTION("MT8173 MAX98090 ALSA SoC machine driver");

MODULE_AUTHOR("Koro Chen <koro.chen@mediatek.com>");

MODULE_LICENSE("GPL v2");

MODULE_ALIAS("platform:mt8173-max98090");