1 files changed, 697 insertions, 0 deletions

diff --git a/sound/soc/samsung/aries_wm8994.c b/sound/soc/samsung/aries_wm8994.c
new file mode 100644
index 000000000..0fbbf3b02
--- /dev/null
+++ b/sound/soc/samsung/aries_wm8994.c
@@ -0,0 +1,697 @@
+// SPDX-License-Identifier: GPL-2.0+
+#include <linux/extcon.h>
+#include <linux/iio/consumer.h>
+#include <linux/input-event-codes.h>
+#include <linux/mfd/wm8994/registers.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/of_device.h>
+#include <linux/of_gpio.h>
+#include <linux/regulator/consumer.h>
+#include <sound/jack.h>
+#include <sound/pcm_params.h>
+#include <sound/soc.h>
+
+#include "i2s.h"
+#include "../codecs/wm8994.h"
+
+#define ARIES_MCLK1_FREQ 24000000
+
+struct aries_wm8994_variant {
+	unsigned int modem_dai_fmt;
+	bool has_fm_radio;
+};
+
+struct aries_wm8994_data {
+	struct extcon_dev *usb_extcon;
+	struct regulator *reg_main_micbias;
+	struct regulator *reg_headset_micbias;
+	struct gpio_desc *gpio_headset_detect;
+	struct gpio_desc *gpio_headset_key;
+	struct gpio_desc *gpio_earpath_sel;
+	struct iio_channel *adc;
+	const struct aries_wm8994_variant *variant;
+};
+
+/* USB dock */
+static struct snd_soc_jack aries_dock;
+
+static struct snd_soc_jack_pin dock_pins[] = {
+	{
+		.pin = "LINE",
+		.mask = SND_JACK_LINEOUT,
+	},
+};
+
+static int aries_extcon_notifier(struct notifier_block *this,
+				 unsigned long connected, void *_cmd)
+{
+	if (connected)
+		snd_soc_jack_report(&aries_dock, SND_JACK_LINEOUT,
+				SND_JACK_LINEOUT);
+	else
+		snd_soc_jack_report(&aries_dock, 0, SND_JACK_LINEOUT);
+
+	return NOTIFY_DONE;
+}
+
+static struct notifier_block aries_extcon_notifier_block = {
+	.notifier_call = aries_extcon_notifier,
+};
+
+/* Headset jack */
+static struct snd_soc_jack aries_headset;
+
+static struct snd_soc_jack_pin jack_pins[] = {
+	{
+		.pin = "HP",
+		.mask = SND_JACK_HEADPHONE,
+	}, {
+		.pin = "Headset Mic",
+		.mask = SND_JACK_MICROPHONE,
+	},
+};
+
+static struct snd_soc_jack_zone headset_zones[] = {
+	{
+		.min_mv = 0,
+		.max_mv = 241,
+		.jack_type = SND_JACK_HEADPHONE,
+	}, {
+		.min_mv = 242,
+		.max_mv = 2980,
+		.jack_type = SND_JACK_HEADSET,
+	}, {
+		.min_mv = 2981,
+		.max_mv = UINT_MAX,
+		.jack_type = SND_JACK_HEADPHONE,
+	},
+};
+
+static irqreturn_t headset_det_irq_thread(int irq, void *data)
+{
+	struct aries_wm8994_data *priv = (struct aries_wm8994_data *) data;
+	int ret = 0;
+	int time_left_ms = 300;
+	int adc;
+
+	while (time_left_ms > 0) {
+		if (!gpiod_get_value(priv->gpio_headset_detect)) {
+			snd_soc_jack_report(&aries_headset, 0,
+					SND_JACK_HEADSET);
+			gpiod_set_value(priv->gpio_earpath_sel, 0);
+			return IRQ_HANDLED;
+		}
+		msleep(20);
+		time_left_ms -= 20;
+	}
+
+	/* Temporarily enable micbias and earpath selector */
+	ret = regulator_enable(priv->reg_headset_micbias);
+	if (ret)
+		pr_err("%s failed to enable micbias: %d", __func__, ret);
+
+	gpiod_set_value(priv->gpio_earpath_sel, 1);
+
+	ret = iio_read_channel_processed(priv->adc, &adc);
+	if (ret < 0) {
+		/* failed to read ADC, so assume headphone */
+		pr_err("%s failed to read ADC, assuming headphones", __func__);
+		snd_soc_jack_report(&aries_headset, SND_JACK_HEADPHONE,
+				SND_JACK_HEADSET);
+	} else {
+		snd_soc_jack_report(&aries_headset,
+				snd_soc_jack_get_type(&aries_headset, adc),
+				SND_JACK_HEADSET);
+	}
+
+	ret = regulator_disable(priv->reg_headset_micbias);
+	if (ret)
+		pr_err("%s failed disable micbias: %d", __func__, ret);
+
+	/* Disable earpath selector when no mic connected */
+	if (!(aries_headset.status & SND_JACK_MICROPHONE))
+		gpiod_set_value(priv->gpio_earpath_sel, 0);
+
+	return IRQ_HANDLED;
+}
+
+static int headset_button_check(void *data)
+{
+	struct aries_wm8994_data *priv = (struct aries_wm8994_data *) data;
+
+	/* Filter out keypresses when 4 pole jack not detected */
+	if (gpiod_get_value_cansleep(priv->gpio_headset_key) &&
+			aries_headset.status & SND_JACK_MICROPHONE)
+		return SND_JACK_BTN_0;
+
+	return 0;
+}
+
+static struct snd_soc_jack_gpio headset_button_gpio[] = {
+	{
+		.name = "Media Button",
+		.report = SND_JACK_BTN_0,
+		.debounce_time  = 30,
+		.jack_status_check = headset_button_check,
+	},
+};
+
+static int aries_spk_cfg(struct snd_soc_dapm_widget *w,
+			struct snd_kcontrol *kcontrol, int event)
+{
+	struct snd_soc_card *card = w->dapm->card;
+	struct snd_soc_pcm_runtime *rtd;
+	struct snd_soc_component *component;
+	int ret = 0;
+
+	rtd = snd_soc_get_pcm_runtime(card, &card->dai_link[0]);
+	component = asoc_rtd_to_codec(rtd, 0)->component;
+
+	/**
+	 * We have an odd setup - the SPKMODE pin is pulled up so
+	 * we only have access to the left side SPK configs,
+	 * but SPKOUTR isn't bridged so when playing back in
+	 * stereo, we only get the left hand channel.  The only
+	 * option we're left with is to force the AIF into mono
+	 * mode.
+	 */
+	switch (event) {
+	case SND_SOC_DAPM_POST_PMU:
+		ret = snd_soc_component_update_bits(component,
+				WM8994_AIF1_DAC1_FILTERS_1,
+				WM8994_AIF1DAC1_MONO, WM8994_AIF1DAC1_MONO);
+		break;
+	case SND_SOC_DAPM_PRE_PMD:
+		ret = snd_soc_component_update_bits(component,
+				WM8994_AIF1_DAC1_FILTERS_1,
+				WM8994_AIF1DAC1_MONO, 0);
+		break;
+	}
+
+	return ret;
+}
+
+static int aries_main_bias(struct snd_soc_dapm_widget *w,
+			  struct snd_kcontrol *kcontrol, int event)
+{
+	struct snd_soc_card *card = w->dapm->card;
+	struct aries_wm8994_data *priv = snd_soc_card_get_drvdata(card);
+	int ret = 0;
+
+	switch (event) {
+	case SND_SOC_DAPM_PRE_PMU:
+		ret = regulator_enable(priv->reg_main_micbias);
+		break;
+	case SND_SOC_DAPM_POST_PMD:
+		ret = regulator_disable(priv->reg_main_micbias);
+		break;
+	}
+
+	return ret;
+}
+
+static int aries_headset_bias(struct snd_soc_dapm_widget *w,
+			  struct snd_kcontrol *kcontrol, int event)
+{
+	struct snd_soc_card *card = w->dapm->card;
+	struct aries_wm8994_data *priv = snd_soc_card_get_drvdata(card);
+	int ret = 0;
+
+	switch (event) {
+	case SND_SOC_DAPM_PRE_PMU:
+		ret = regulator_enable(priv->reg_headset_micbias);
+		break;
+	case SND_SOC_DAPM_POST_PMD:
+		ret = regulator_disable(priv->reg_headset_micbias);
+		break;
+	}
+
+	return ret;
+}
+
+static const struct snd_kcontrol_new aries_controls[] = {
+	SOC_DAPM_PIN_SWITCH("Modem In"),
+	SOC_DAPM_PIN_SWITCH("Modem Out"),
+};
+
+static const struct snd_soc_dapm_widget aries_dapm_widgets[] = {
+	SND_SOC_DAPM_HP("HP", NULL),
+
+	SND_SOC_DAPM_SPK("SPK", aries_spk_cfg),
+	SND_SOC_DAPM_SPK("RCV", NULL),
+
+	SND_SOC_DAPM_LINE("LINE", NULL),
+
+	SND_SOC_DAPM_MIC("Main Mic", aries_main_bias),
+	SND_SOC_DAPM_MIC("Headset Mic", aries_headset_bias),
+
+	SND_SOC_DAPM_MIC("Bluetooth Mic", NULL),
+	SND_SOC_DAPM_SPK("Bluetooth SPK", NULL),
+
+	SND_SOC_DAPM_LINE("Modem In", NULL),
+	SND_SOC_DAPM_LINE("Modem Out", NULL),
+
+	/* This must be last as it is conditionally not used */
+	SND_SOC_DAPM_LINE("FM In", NULL),
+};
+
+static int aries_hw_params(struct snd_pcm_substream *substream,
+	struct snd_pcm_hw_params *params)
+{
+	struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
+	struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0);
+	unsigned int pll_out;
+	int ret;
+
+	/* AIF1CLK should be >=3MHz for optimal performance */
+	if (params_width(params) == 24)
+		pll_out = params_rate(params) * 384;
+	else if (params_rate(params) == 8000 || params_rate(params) == 11025)
+		pll_out = params_rate(params) * 512;
+	else
+		pll_out = params_rate(params) * 256;
+
+	ret = snd_soc_dai_set_pll(codec_dai, WM8994_FLL1, WM8994_FLL_SRC_MCLK1,
+				ARIES_MCLK1_FREQ, pll_out);
+	if (ret < 0)
+		return ret;
+
+	ret = snd_soc_dai_set_sysclk(codec_dai, WM8994_SYSCLK_FLL1,
+				pll_out, SND_SOC_CLOCK_IN);
+	if (ret < 0)
+		return ret;
+
+	return 0;
+}
+
+static int aries_hw_free(struct snd_pcm_substream *substream)
+{
+	struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
+	struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0);
+	int ret;
+
+	/* Switch sysclk to MCLK1 */
+	ret = snd_soc_dai_set_sysclk(codec_dai, WM8994_SYSCLK_MCLK1,
+				ARIES_MCLK1_FREQ, SND_SOC_CLOCK_IN);
+	if (ret < 0)
+		return ret;
+
+	/* Stop PLL */
+	ret = snd_soc_dai_set_pll(codec_dai, WM8994_FLL1, WM8994_FLL_SRC_MCLK1,
+				ARIES_MCLK1_FREQ, 0);
+	if (ret < 0)
+		return ret;
+
+	return 0;
+}
+
+/*
+ * Main DAI operations
+ */
+static const struct snd_soc_ops aries_ops = {
+	.hw_params = aries_hw_params,
+	.hw_free = aries_hw_free,
+};
+
+static int aries_baseband_init(struct snd_soc_pcm_runtime *rtd)
+{
+	struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0);
+	unsigned int pll_out;
+	int ret;
+
+	pll_out = 8000 * 512;
+
+	/* Set the codec FLL */
+	ret = snd_soc_dai_set_pll(codec_dai, WM8994_FLL2, WM8994_FLL_SRC_MCLK1,
+			ARIES_MCLK1_FREQ, pll_out);
+	if (ret < 0)
+		return ret;
+
+	/* Set the codec system clock */
+	ret = snd_soc_dai_set_sysclk(codec_dai, WM8994_SYSCLK_FLL2,
+			pll_out, SND_SOC_CLOCK_IN);
+	if (ret < 0)
+		return ret;
+
+	return 0;
+}
+
+static int aries_late_probe(struct snd_soc_card *card)
+{
+	struct aries_wm8994_data *priv = snd_soc_card_get_drvdata(card);
+	int ret, irq;
+
+	ret = snd_soc_card_jack_new_pins(card, "Dock", SND_JACK_LINEOUT,
+			&aries_dock, dock_pins, ARRAY_SIZE(dock_pins));
+	if (ret)
+		return ret;
+
+	ret = devm_extcon_register_notifier(card->dev,
+			priv->usb_extcon, EXTCON_JACK_LINE_OUT,
+			&aries_extcon_notifier_block);
+	if (ret)
+		return ret;
+
+	if (extcon_get_state(priv->usb_extcon,
+			EXTCON_JACK_LINE_OUT) > 0)
+		snd_soc_jack_report(&aries_dock, SND_JACK_LINEOUT,
+				SND_JACK_LINEOUT);
+	else
+		snd_soc_jack_report(&aries_dock, 0, SND_JACK_LINEOUT);
+
+	ret = snd_soc_card_jack_new_pins(card, "Headset",
+			SND_JACK_HEADSET | SND_JACK_BTN_0,
+			&aries_headset,
+			jack_pins, ARRAY_SIZE(jack_pins));
+	if (ret)
+		return ret;
+
+	ret = snd_soc_jack_add_zones(&aries_headset, ARRAY_SIZE(headset_zones),
+			headset_zones);
+	if (ret)
+		return ret;
+
+	irq = gpiod_to_irq(priv->gpio_headset_detect);
+	if (irq < 0) {
+		dev_err(card->dev, "Failed to map headset detect gpio to irq");
+		return -EINVAL;
+	}
+
+	ret = devm_request_threaded_irq(card->dev, irq, NULL,
+			headset_det_irq_thread,
+			IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING |
+			IRQF_ONESHOT, "headset_detect", priv);
+	if (ret) {
+		dev_err(card->dev, "Failed to request headset detect irq");
+		return ret;
+	}
+
+	headset_button_gpio[0].data = priv;
+	headset_button_gpio[0].desc = priv->gpio_headset_key;
+
+	snd_jack_set_key(aries_headset.jack, SND_JACK_BTN_0, KEY_MEDIA);
+
+	return snd_soc_jack_add_gpios(&aries_headset,
+			ARRAY_SIZE(headset_button_gpio), headset_button_gpio);
+}
+
+static const struct snd_soc_pcm_stream baseband_params = {
+	.formats = SNDRV_PCM_FMTBIT_S16_LE,
+	.rate_min = 8000,
+	.rate_max = 8000,
+	.channels_min = 1,
+	.channels_max = 1,
+};
+
+static const struct snd_soc_pcm_stream bluetooth_params = {
+	.formats = SNDRV_PCM_FMTBIT_S16_LE,
+	.rate_min = 8000,
+	.rate_max = 8000,
+	.channels_min = 1,
+	.channels_max = 2,
+};
+
+static const struct snd_soc_dapm_widget aries_modem_widgets[] = {
+	SND_SOC_DAPM_INPUT("Modem RX"),
+	SND_SOC_DAPM_OUTPUT("Modem TX"),
+};
+
+static const struct snd_soc_dapm_route aries_modem_routes[] = {
+	{ "Modem Capture", NULL, "Modem RX" },
+	{ "Modem TX", NULL, "Modem Playback" },
+};
+
+static const struct snd_soc_component_driver aries_component = {
+	.name			= "aries-audio",
+	.dapm_widgets		= aries_modem_widgets,
+	.num_dapm_widgets	= ARRAY_SIZE(aries_modem_widgets),
+	.dapm_routes		= aries_modem_routes,
+	.num_dapm_routes	= ARRAY_SIZE(aries_modem_routes),
+	.idle_bias_on		= 1,
+	.use_pmdown_time	= 1,
+	.endianness		= 1,
+};
+
+static struct snd_soc_dai_driver aries_ext_dai[] = {
+	{
+		.name = "Voice call",
+		.playback = {
+			.stream_name = "Modem Playback",
+			.channels_min = 1,
+			.channels_max = 1,
+			.rate_min = 8000,
+			.rate_max = 8000,
+			.rates = SNDRV_PCM_RATE_8000,
+			.formats = SNDRV_PCM_FMTBIT_S16_LE,
+		},
+		.capture = {
+			.stream_name = "Modem Capture",
+			.channels_min = 1,
+			.channels_max = 1,
+			.rate_min = 8000,
+			.rate_max = 8000,
+			.rates = SNDRV_PCM_RATE_8000,
+			.formats = SNDRV_PCM_FMTBIT_S16_LE,
+		},
+	},
+};
+
+SND_SOC_DAILINK_DEFS(aif1,
+	DAILINK_COMP_ARRAY(COMP_CPU(SAMSUNG_I2S_DAI)),
+	DAILINK_COMP_ARRAY(COMP_CODEC(NULL, "wm8994-aif1")),
+	DAILINK_COMP_ARRAY(COMP_EMPTY()));
+
+SND_SOC_DAILINK_DEFS(baseband,
+	DAILINK_COMP_ARRAY(COMP_CPU("Voice call")),
+	DAILINK_COMP_ARRAY(COMP_CODEC(NULL, "wm8994-aif2")));
+
+SND_SOC_DAILINK_DEFS(bluetooth,
+	DAILINK_COMP_ARRAY(COMP_CPU("bt-sco-pcm")),
+	DAILINK_COMP_ARRAY(COMP_CODEC(NULL, "wm8994-aif3")));
+
+static struct snd_soc_dai_link aries_dai[] = {
+	{
+		.name = "WM8994 AIF1",
+		.stream_name = "HiFi",
+		.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
+			SND_SOC_DAIFMT_CBM_CFM,
+		.ops = &aries_ops,
+		SND_SOC_DAILINK_REG(aif1),
+	},
+	{
+		.name = "WM8994 AIF2",
+		.stream_name = "Baseband",
+		.init = &aries_baseband_init,
+		.params = &baseband_params,
+		.ignore_suspend = 1,
+		SND_SOC_DAILINK_REG(baseband),
+	},
+	{
+		.name = "WM8994 AIF3",
+		.stream_name = "Bluetooth",
+		.params = &bluetooth_params,
+		.ignore_suspend = 1,
+		SND_SOC_DAILINK_REG(bluetooth),
+	},
+};
+
+static struct snd_soc_card aries_card = {
+	.name = "ARIES",
+	.owner = THIS_MODULE,
+	.dai_link = aries_dai,
+	.num_links = ARRAY_SIZE(aries_dai),
+	.controls = aries_controls,
+	.num_controls = ARRAY_SIZE(aries_controls),
+	.dapm_widgets = aries_dapm_widgets,
+	.num_dapm_widgets = ARRAY_SIZE(aries_dapm_widgets),
+	.late_probe = aries_late_probe,
+};
+
+static const struct aries_wm8994_variant fascinate4g_variant = {
+	.modem_dai_fmt = SND_SOC_DAIFMT_DSP_A | SND_SOC_DAIFMT_CBS_CFS
+		| SND_SOC_DAIFMT_IB_NF,
+	.has_fm_radio = false,
+};
+
+static const struct aries_wm8994_variant aries_variant = {
+	.modem_dai_fmt = SND_SOC_DAIFMT_DSP_A | SND_SOC_DAIFMT_CBM_CFM
+		| SND_SOC_DAIFMT_IB_NF,
+	.has_fm_radio = true,
+};
+
+static const struct of_device_id samsung_wm8994_of_match[] = {
+	{
+		.compatible = "samsung,fascinate4g-wm8994",
+		.data = &fascinate4g_variant,
+	},
+	{
+		.compatible = "samsung,aries-wm8994",
+		.data = &aries_variant,
+	},
+	{ /* sentinel */ },
+};
+MODULE_DEVICE_TABLE(of, samsung_wm8994_of_match);
+
+static int aries_audio_probe(struct platform_device *pdev)
+{
+	struct device_node *np = pdev->dev.of_node;
+	struct device_node *cpu, *codec, *extcon_np;
+	struct device *dev = &pdev->dev;
+	struct snd_soc_card *card = &aries_card;
+	struct aries_wm8994_data *priv;
+	struct snd_soc_dai_link *dai_link;
+	const struct of_device_id *match;
+	enum iio_chan_type channel_type;
+	int ret, i;
+
+	if (!np)
+		return -EINVAL;
+
+	card->dev = dev;
+
+	priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
+	if (!priv)
+		return -ENOMEM;
+
+	snd_soc_card_set_drvdata(card, priv);
+
+	match = of_match_node(samsung_wm8994_of_match, np);
+	priv->variant = match->data;
+
+	/* Remove FM widget if not present */
+	if (!priv->variant->has_fm_radio)
+		card->num_dapm_widgets--;
+
+	priv->reg_main_micbias = devm_regulator_get(dev, "main-micbias");
+	if (IS_ERR(priv->reg_main_micbias)) {
+		dev_err(dev, "Failed to get main micbias regulator\n");
+		return PTR_ERR(priv->reg_main_micbias);
+	}
+
+	priv->reg_headset_micbias = devm_regulator_get(dev, "headset-micbias");
+	if (IS_ERR(priv->reg_headset_micbias)) {
+		dev_err(dev, "Failed to get headset micbias regulator\n");
+		return PTR_ERR(priv->reg_headset_micbias);
+	}
+
+	priv->gpio_earpath_sel = devm_gpiod_get(dev, "earpath-sel",
+			GPIOD_OUT_LOW);
+	if (IS_ERR(priv->gpio_earpath_sel)) {
+		dev_err(dev, "Failed to get earpath selector gpio");
+		return PTR_ERR(priv->gpio_earpath_sel);
+	}
+
+	extcon_np = of_parse_phandle(np, "extcon", 0);
+	priv->usb_extcon = extcon_find_edev_by_node(extcon_np);
+	of_node_put(extcon_np);
+	if (IS_ERR(priv->usb_extcon))
+		return dev_err_probe(dev, PTR_ERR(priv->usb_extcon),
+				     "Failed to get extcon device");
+
+	priv->adc = devm_iio_channel_get(dev, "headset-detect");
+	if (IS_ERR(priv->adc))
+		return dev_err_probe(dev, PTR_ERR(priv->adc),
+				     "Failed to get ADC channel");
+
+	ret = iio_get_channel_type(priv->adc, &channel_type);
+	if (ret)
+		return dev_err_probe(dev, ret,
+				     "Failed to get ADC channel type");
+	if (channel_type != IIO_VOLTAGE)
+		return -EINVAL;
+
+	priv->gpio_headset_key = devm_gpiod_get(dev, "headset-key",
+			GPIOD_IN);
+	if (IS_ERR(priv->gpio_headset_key)) {
+		dev_err(dev, "Failed to get headset key gpio");
+		return PTR_ERR(priv->gpio_headset_key);
+	}
+
+	priv->gpio_headset_detect = devm_gpiod_get(dev,
+			"headset-detect", GPIOD_IN);
+	if (IS_ERR(priv->gpio_headset_detect)) {
+		dev_err(dev, "Failed to get headset detect gpio");
+		return PTR_ERR(priv->gpio_headset_detect);
+	}
+
+	/* Update card-name if provided through DT, else use default name */
+	snd_soc_of_parse_card_name(card, "model");
+
+	ret = snd_soc_of_parse_audio_routing(card, "samsung,audio-routing");
+	if (ret < 0) {
+		dev_err(dev, "Audio routing invalid/unspecified\n");
+		return ret;
+	}
+
+	aries_dai[1].dai_fmt = priv->variant->modem_dai_fmt;
+
+	cpu = of_get_child_by_name(dev->of_node, "cpu");
+	if (!cpu)
+		return -EINVAL;
+
+	codec = of_get_child_by_name(dev->of_node, "codec");
+	if (!codec) {
+		ret = -EINVAL;
+		goto out;
+	}
+
+	for_each_card_prelinks(card, i, dai_link) {
+		dai_link->codecs->of_node = of_parse_phandle(codec,
+				"sound-dai", 0);
+		if (!dai_link->codecs->of_node) {
+			ret = -EINVAL;
+			goto out;
+		}
+	}
+
+	/* Set CPU and platform of_node for main DAI */
+	aries_dai[0].cpus->of_node = of_parse_phandle(cpu,
+			"sound-dai", 0);
+	if (!aries_dai[0].cpus->of_node) {
+		ret = -EINVAL;
+		goto out;
+	}
+
+	aries_dai[0].platforms->of_node = aries_dai[0].cpus->of_node;
+
+	/* Set CPU of_node for BT DAI */
+	aries_dai[2].cpus->of_node = of_parse_phandle(cpu,
+			"sound-dai", 1);
+	if (!aries_dai[2].cpus->of_node) {
+		ret = -EINVAL;
+		goto out;
+	}
+
+	ret = devm_snd_soc_register_component(dev, &aries_component,
+				aries_ext_dai, ARRAY_SIZE(aries_ext_dai));
+	if (ret < 0) {
+		dev_err(dev, "Failed to register component: %d\n", ret);
+		goto out;
+	}
+
+	ret = devm_snd_soc_register_card(dev, card);
+	if (ret)
+		dev_err(dev, "snd_soc_register_card() failed:%d\n", ret);
+
+out:
+	of_node_put(cpu);
+	of_node_put(codec);
+
+	return ret;
+}
+
+static struct platform_driver aries_audio_driver = {
+	.driver		= {
+		.name	= "aries-audio-wm8994",
+		.of_match_table = of_match_ptr(samsung_wm8994_of_match),
+		.pm	= &snd_soc_pm_ops,
+	},
+	.probe		= aries_audio_probe,
+};
+
+module_platform_driver(aries_audio_driver);
+
+MODULE_DESCRIPTION("ALSA SoC ARIES WM8994");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:aries-audio-wm8994");