ASoC: tegra: add max98095 audio codec support

Reviewed-on: http://git-master/r/75964

Change-Id: Iddc1a4ab042aaab00d7959f957b66fc879c76ccc
Reviewed-by: Scott Peterson <speterson@nvidia.com>
Reviewed-by: Sumit Bhattacharya <sumitb@nvidia.com>
Signed-off-by: Ravindra Lokhande <rlokhande@nvidia.com>
Signed-off-by: Varun Wadekar <vwadekar@nvidia.com>
Reviewed-on: http://git-master/r/77302
Reviewed-by: Automatic_Commit_Validation_User

3 files changed, 747 insertions, 0 deletions

diff --git a/sound/soc/tegra/Kconfig b/sound/soc/tegra/Kconfig
index 59a6633915db..f3f185fed61f 100644
--- a/sound/soc/tegra/Kconfig
+++ b/sound/soc/tegra/Kconfig
@@ -171,3 +171,25 @@ config SND_SOC_TEGRA_RT5640
 	  Say Y or M here if you want to add support for SoC audio on Tegra
 	  boards using the ALC5640 codec. Currently, the supported boards
 	  are Kai and Cardhu.
+
+config MACH_HAS_SND_SOC_TEGRA_MAX98095
+	bool
+	help
+	  Machines that use the SND_SOC_TEGRA_MAX98095 driver should select
+	  this config option, in order to allow the user to enable
+	  SND_SOC_TEGRA_MAX98095.
+
+config SND_SOC_TEGRA_MAX98095
+	tristate "SoC Audio support for Tegra boards using a MAX98095 codec"
+	depends on SND_SOC_TEGRA && I2C && TEGRA_DC
+	depends on MACH_HAS_SND_SOC_TEGRA_MAX98095
+	select SND_SOC_TEGRA20_I2S if ARCH_TEGRA_2x_SOC
+	select SND_SOC_TEGRA30_I2S if ARCH_TEGRA_3x_SOC
+	select SND_SOC_TEGRA30_SPDIF if ARCH_TEGRA_3x_SOC
+	select SND_SOC_MAX98095
+	select SND_SOC_SPDIF
+	select SND_SOC_TEGRA30_DAM if ARCH_TEGRA_3x_SOC
+	help
+	  Say Y or M here if you want to add support for SoC audio on Tegra
+	  boards using the MAX98095 codec. Currently, only supported board is
+	  Cardhu.
diff --git a/sound/soc/tegra/Makefile b/sound/soc/tegra/Makefile
index dceef1137534..766e66adb85d 100644
--- a/sound/soc/tegra/Makefile
+++ b/sound/soc/tegra/Makefile
@@ -28,6 +28,7 @@ snd-soc-tegra-wm8753-objs := tegra_wm8753.o
 snd-soc-tegra-max98088-objs := tegra_max98088.o
 snd-soc-tegra-aic326x-objs := tegra_aic326x.o
 snd-soc-tegra-rt5640-objs := tegra_rt5640.o
+snd-soc-tegra-max98095-objs := tegra_max98095.o
 
 obj-$(CONFIG_SND_SOC_TEGRA_WM8903) += snd-soc-tegra-wm8903.o
 obj-$(CONFIG_SND_SOC_TEGRA_TRIMSLICE) += snd-soc-tegra-trimslice.o
@@ -35,3 +36,4 @@ obj-$(CONFIG_SND_SOC_TEGRA_WM8753) += snd-soc-tegra-wm8753.o
 obj-$(CONFIG_SND_SOC_TEGRA_MAX98088) += snd-soc-tegra-max98088.o
 obj-$(CONFIG_SND_SOC_TEGRA_TLV320AIC326X) += snd-soc-tegra-aic326x.o
 obj-$(CONFIG_SND_SOC_TEGRA_RT5640) += snd-soc-tegra-rt5640.o
+obj-$(CONFIG_SND_SOC_TEGRA_MAX98095) += snd-soc-tegra-max98095.o
diff --git a/sound/soc/tegra/tegra_max98095.c b/sound/soc/tegra/tegra_max98095.c
new file mode 100644
index 000000000000..e71691d80b45
--- /dev/null
+++ b/sound/soc/tegra/tegra_max98095.c
@@ -0,0 +1,723 @@
+/*
+ * tegra_max98095.c - Tegra machine ASoC driver for boards using MAX98095 codec.
+ *
+ * Author: Ravindra Lokhande <rlokhande@nvidia.com>
+ * Copyright (C) 2012 - NVIDIA, Inc.
+ *
+ * Based on version from Sumit Bhattacharya <sumitb@nvidia.com>
+ *
+ * Based on code copyright/by:
+ *
+ * (c) 2010, 2011, 2012 Nvidia Graphics Pvt. Ltd.
+ *
+ * Copyright 2007 Wolfson Microelectronics PLC.
+ * Author: Graeme Gregory
+ *         graeme.gregory@wolfsonmicro.com or linux@wolfsonmicro.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 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
+ * 02110-1301 USA
+ *
+ */
+
+#include <asm/mach-types.h>
+
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/slab.h>
+#include <linux/gpio.h>
+#include <linux/regulator/consumer.h>
+#ifdef CONFIG_SWITCH
+#include <linux/switch.h>
+#endif
+
+#include <mach/tegra_asoc_pdata.h>
+
+#include <sound/core.h>
+#include <sound/jack.h>
+#include <sound/pcm.h>
+#include <sound/pcm_params.h>
+#include <sound/soc.h>
+
+#include "../codecs/max98095.h"
+
+#include "tegra_pcm.h"
+#include "tegra_asoc_utils.h"
+#ifndef CONFIG_ARCH_TEGRA_2x_SOC
+#include "tegra30_ahub.h"
+#include "tegra30_i2s.h"
+#include "tegra30_dam.h"
+#endif
+
+#define DRV_NAME "tegra-snd-max98095"
+
+#define GPIO_SPKR_EN    BIT(0)
+#define GPIO_HP_MUTE    BIT(1)
+#define GPIO_INT_MIC_EN BIT(2)
+#define GPIO_EXT_MIC_EN BIT(3)
+
+#ifndef CONFIG_ARCH_TEGRA_2x_SOC
+const char *tegra_max98095_i2s_dai_name[TEGRA30_NR_I2S_IFC] = {
+	"tegra30-i2s.0",
+	"tegra30-i2s.1",
+	"tegra30-i2s.2",
+	"tegra30-i2s.3",
+	"tegra30-i2s.4",
+};
+#endif
+
+struct tegra_max98095 {
+	struct tegra_asoc_utils_data util_data;
+	struct tegra_asoc_platform_data *pdata;
+	int gpio_requested;
+	bool init_done;
+	int is_call_mode;
+	int is_device_bt;
+#ifndef CONFIG_ARCH_TEGRA_2x_SOC
+	struct codec_config codec_info[NUM_I2S_DEVICES];
+#endif
+	enum snd_soc_bias_level bias_level;
+};
+
+
+#ifndef CONFIG_ARCH_TEGRA_2x_SOC
+static int tegra_max98095_set_dam_cif(int dam_ifc, int srate,
+			int channels, int bit_size)
+{
+	tegra30_dam_set_samplerate(dam_ifc, TEGRA30_DAM_CHOUT,
+				srate);
+	tegra30_dam_set_samplerate(dam_ifc, TEGRA30_DAM_CHIN1,
+				srate);
+	tegra30_dam_set_acif(dam_ifc, TEGRA30_DAM_CHIN1,
+		channels, bit_size, channels,
+				bit_size);
+	tegra30_dam_set_acif(dam_ifc, TEGRA30_DAM_CHOUT,
+		channels, bit_size, channels,
+				bit_size);
+
+	return 0;
+}
+#endif
+
+static int tegra_max98095_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;
+	struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
+	struct snd_soc_codec *codec = rtd->codec;
+	struct snd_soc_card *card = codec->card;
+	struct tegra_max98095 *machine = snd_soc_card_get_drvdata(card);
+#ifndef CONFIG_ARCH_TEGRA_2x_SOC
+	struct tegra30_i2s *i2s = snd_soc_dai_get_drvdata(cpu_dai);
+#endif
+	unsigned int srate, mclk, sample_size;
+	int err;
+
+	switch (params_format(params)) {
+	case SNDRV_PCM_FORMAT_S16_LE:
+		sample_size = 16;
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	srate = params_rate(params);
+	switch (srate) {
+	case 8000:
+	case 16000:
+	case 24000:
+	case 32000:
+	case 48000:
+	case 64000:
+	case 96000:
+		mclk = 12288000;
+		break;
+	case 11025:
+	case 22050:
+	case 44100:
+	case 88200:
+		mclk = 11289600;
+		break;
+	default:
+		mclk = 12000000;
+		break;
+	}
+
+	err = tegra_asoc_utils_set_rate(&machine->util_data, srate, mclk);
+	if (err < 0) {
+		if (!(machine->util_data.set_mclk % mclk))
+			mclk = machine->util_data.set_mclk;
+		else {
+			dev_err(card->dev, "Can't configure clocks\n");
+			return err;
+		}
+	}
+
+	tegra_asoc_utils_lock_clk_rate(&machine->util_data, 1);
+
+	err = snd_soc_dai_set_fmt(codec_dai,
+					SND_SOC_DAIFMT_I2S |
+					SND_SOC_DAIFMT_NB_NF |
+					SND_SOC_DAIFMT_CBS_CFS);
+	if (err < 0) {
+		dev_err(card->dev, "codec_dai fmt not set\n");
+		return err;
+	}
+
+	err = snd_soc_dai_set_fmt(cpu_dai,
+					SND_SOC_DAIFMT_I2S |
+					SND_SOC_DAIFMT_NB_NF |
+					SND_SOC_DAIFMT_CBS_CFS);
+	if (err < 0) {
+		dev_err(card->dev, "cpu_dai fmt not set\n");
+		return err;
+	}
+
+	err = snd_soc_dai_set_sysclk(codec_dai, 0, mclk,
+					SND_SOC_CLOCK_IN);
+	if (err < 0) {
+		dev_err(card->dev, "codec_dai clock not set\n");
+		return err;
+	}
+
+#ifndef CONFIG_ARCH_TEGRA_2x_SOC
+	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
+		tegra_max98095_set_dam_cif(i2s->dam_ifc, srate,
+				params_channels(params), sample_size);
+#endif
+
+	return 0;
+}
+
+static int tegra_spdif_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_card *card = rtd->card;
+	struct tegra_max98095 *machine = snd_soc_card_get_drvdata(card);
+	unsigned int srate, mclk, min_mclk;
+	int err;
+
+	srate = params_rate(params);
+	switch (srate) {
+	case 11025:
+	case 22050:
+	case 44100:
+	case 88200:
+		mclk = 11289600;
+		break;
+	case 8000:
+	case 16000:
+	case 32000:
+	case 48000:
+	case 64000:
+	case 96000:
+		mclk = 12288000;
+		break;
+	default:
+		return -EINVAL;
+	}
+	min_mclk = 128 * srate;
+
+	err = tegra_asoc_utils_set_rate(&machine->util_data, srate, mclk);
+	if (err < 0) {
+		if (!(machine->util_data.set_mclk % min_mclk))
+			mclk = machine->util_data.set_mclk;
+		else {
+			dev_err(card->dev, "Can't configure clocks\n");
+			return err;
+		}
+	}
+
+	tegra_asoc_utils_lock_clk_rate(&machine->util_data, 1);
+
+
+
+	return 0;
+}
+
+static int tegra_hw_free(struct snd_pcm_substream *substream)
+{
+	struct snd_soc_pcm_runtime *rtd = substream->private_data;
+	struct tegra_max98095 *machine = snd_soc_card_get_drvdata(rtd->card);
+
+	tegra_asoc_utils_lock_clk_rate(&machine->util_data, 0);
+
+	return 0;
+}
+
+#ifndef CONFIG_ARCH_TEGRA_2x_SOC
+static int tegra_max98095_startup(struct snd_pcm_substream *substream)
+{
+	struct snd_soc_pcm_runtime *rtd = substream->private_data;
+	struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
+	struct tegra30_i2s *i2s = snd_soc_dai_get_drvdata(cpu_dai);
+
+	if ((substream->stream != SNDRV_PCM_STREAM_PLAYBACK) ||
+		!(i2s->is_dam_used))
+		return 0;
+
+	/*dam configuration*/
+	if (!i2s->dam_ch_refcount)
+		i2s->dam_ifc = tegra30_dam_allocate_controller();
+
+	tegra30_dam_allocate_channel(i2s->dam_ifc, TEGRA30_DAM_CHIN1);
+	i2s->dam_ch_refcount++;
+	tegra30_dam_enable_clock(i2s->dam_ifc);
+	tegra30_dam_set_gain(i2s->dam_ifc, TEGRA30_DAM_CHIN1, 0x1000);
+
+	tegra30_ahub_set_rx_cif_source(TEGRA30_AHUB_RXCIF_DAM0_RX1 +
+			(i2s->dam_ifc*2), i2s->txcif);
+
+	/*
+	*make the dam tx to i2s rx connection if this is the only client
+	*using i2s for playback
+	*/
+	if (i2s->playback_ref_count == 1)
+		tegra30_ahub_set_rx_cif_source(
+			TEGRA30_AHUB_RXCIF_I2S0_RX0 + i2s->id,
+			TEGRA30_AHUB_TXCIF_DAM0_TX0 + i2s->dam_ifc);
+
+	/* enable the dam*/
+	tegra30_dam_enable(i2s->dam_ifc, TEGRA30_DAM_ENABLE,
+			TEGRA30_DAM_CHIN1);
+
+	return 0;
+}
+
+static void tegra_max98095_shutdown(struct snd_pcm_substream *substream)
+{
+	struct snd_soc_pcm_runtime *rtd = substream->private_data;
+	struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
+	struct tegra30_i2s *i2s = snd_soc_dai_get_drvdata(cpu_dai);
+
+	if ((substream->stream != SNDRV_PCM_STREAM_PLAYBACK) ||
+		!(i2s->is_dam_used))
+		return;
+
+	/* disable the dam*/
+	tegra30_dam_enable(i2s->dam_ifc, TEGRA30_DAM_DISABLE,
+			TEGRA30_DAM_CHIN1);
+
+	/* disconnect the ahub connections*/
+	tegra30_ahub_unset_rx_cif_source(TEGRA30_AHUB_RXCIF_DAM0_RX1 +
+				(i2s->dam_ifc*2));
+
+	/* disable the dam and free the controller */
+	tegra30_dam_disable_clock(i2s->dam_ifc);
+	tegra30_dam_free_channel(i2s->dam_ifc, TEGRA30_DAM_CHIN1);
+	i2s->dam_ch_refcount--;
+	if (!i2s->dam_ch_refcount)
+		tegra30_dam_free_controller(i2s->dam_ifc);
+
+	return;
+}
+#endif
+
+static struct snd_soc_ops tegra_max98095_ops = {
+	.hw_params = tegra_max98095_hw_params,
+	.hw_free = tegra_hw_free,
+#ifndef CONFIG_ARCH_TEGRA_2x_SOC
+	.startup = tegra_max98095_startup,
+	.shutdown = tegra_max98095_shutdown,
+#endif
+};
+
+static struct snd_soc_ops tegra_spdif_ops = {
+	.hw_params = tegra_spdif_hw_params,
+	.hw_free = tegra_hw_free,
+};
+
+static struct snd_soc_jack tegra_max98095_hp_jack;
+
+#ifdef CONFIG_SWITCH
+static struct switch_dev wired_switch_dev = {
+	.name = "h2w",
+};
+
+/* These values are copied from WiredAccessoryObserver */
+enum headset_state {
+	BIT_NO_HEADSET = 0,
+	BIT_HEADSET = (1 << 0),
+	BIT_HEADSET_NO_MIC = (1 << 1),
+};
+
+static int headset_switch_notify(struct notifier_block *self,
+	unsigned long action, void *dev)
+{
+	int state = 0;
+
+	switch (action) {
+	case SND_JACK_HEADPHONE:
+		state |= BIT_HEADSET_NO_MIC;
+		break;
+	case SND_JACK_HEADSET:
+		state |= BIT_HEADSET;
+		break;
+	default:
+		state |= BIT_NO_HEADSET;
+	}
+
+	switch_set_state(&wired_switch_dev, state);
+
+	return NOTIFY_OK;
+}
+
+static struct notifier_block headset_switch_nb = {
+	.notifier_call = headset_switch_notify,
+};
+#else
+static struct snd_soc_jack_pin tegra_max98095_hp_jack_pins[] = {
+	{
+		.pin = "Headphone Jack",
+		.mask = SND_JACK_HEADPHONE,
+	},
+};
+#endif
+
+static int tegra_max98095_event_int_spk(struct snd_soc_dapm_widget *w,
+					struct snd_kcontrol *k, int event)
+{
+	struct snd_soc_dapm_context *dapm = w->dapm;
+	struct snd_soc_card *card = dapm->card;
+	struct tegra_max98095 *machine = snd_soc_card_get_drvdata(card);
+	struct tegra_asoc_platform_data *pdata = machine->pdata;
+
+	if (!(machine->gpio_requested & GPIO_SPKR_EN))
+		return 0;
+
+	gpio_set_value_cansleep(pdata->gpio_spkr_en,
+				SND_SOC_DAPM_EVENT_ON(event));
+
+	return 0;
+}
+
+static int tegra_max98095_event_hp(struct snd_soc_dapm_widget *w,
+					struct snd_kcontrol *k, int event)
+{
+	struct snd_soc_dapm_context *dapm = w->dapm;
+	struct snd_soc_card *card = dapm->card;
+	struct tegra_max98095 *machine = snd_soc_card_get_drvdata(card);
+	struct tegra_asoc_platform_data *pdata = machine->pdata;
+
+	if (!(machine->gpio_requested & GPIO_HP_MUTE))
+		return 0;
+
+	gpio_set_value_cansleep(pdata->gpio_hp_mute,
+				!SND_SOC_DAPM_EVENT_ON(event));
+
+	return 0;
+}
+
+static const struct snd_soc_dapm_widget tegra_max98095_dapm_widgets[] = {
+	SND_SOC_DAPM_SPK("Int Spk", tegra_max98095_event_int_spk),
+	SND_SOC_DAPM_OUTPUT("Earpiece"),
+	SND_SOC_DAPM_HP("Headphone Jack", tegra_max98095_event_hp),
+	SND_SOC_DAPM_MIC("Mic Jack", NULL),
+	SND_SOC_DAPM_INPUT("Int Mic"),
+};
+
+static const struct snd_soc_dapm_route enterprise_audio_map[] = {
+	{"Int Spk", NULL, "SPKL"},
+	{"Int Spk", NULL, "SPKR"},
+	{"Earpiece", NULL, "RECL"},
+	{"Earpiece", NULL, "RECR"},
+	{"Headphone Jack", NULL, "HPL"},
+	{"Headphone Jack", NULL, "HPR"},
+	{"MICBIAS", NULL, "Mic Jack"},
+	{"MIC2", NULL, "MICBIAS"},
+	{"MICBIAS", NULL, "Int Mic"},
+	{"MIC1", NULL, "MICBIAS"},
+};
+
+static const struct snd_kcontrol_new tegra_max98095_controls[] = {
+	SOC_DAPM_PIN_SWITCH("Int Spk"),
+	SOC_DAPM_PIN_SWITCH("Earpiece"),
+	SOC_DAPM_PIN_SWITCH("Headphone Jack"),
+	SOC_DAPM_PIN_SWITCH("Mic Jack"),
+	SOC_DAPM_PIN_SWITCH("Int Mic"),
+};
+
+static int tegra_max98095_init(struct snd_soc_pcm_runtime *rtd)
+{
+	struct snd_soc_codec *codec = rtd->codec;
+	struct snd_soc_dapm_context *dapm = &codec->dapm;
+	struct snd_soc_card *card = codec->card;
+	struct tegra_max98095 *machine = snd_soc_card_get_drvdata(card);
+	struct tegra_asoc_platform_data *pdata = machine->pdata;
+#ifndef CONFIG_ARCH_TEGRA_2x_SOC
+	struct tegra30_i2s *i2s = snd_soc_dai_get_drvdata(rtd->cpu_dai);
+#endif
+	int ret;
+
+#ifndef CONFIG_ARCH_TEGRA_2x_SOC
+	if (machine->codec_info[BASEBAND].i2s_id != -1)
+		i2s->is_dam_used = true;
+#endif
+
+	if (machine->init_done)
+		return 0;
+
+	machine->init_done = true;
+
+	if (gpio_is_valid(pdata->gpio_spkr_en)) {
+		ret = gpio_request(pdata->gpio_spkr_en, "spkr_en");
+		if (ret) {
+			dev_err(card->dev, "cannot get spkr_en gpio\n");
+			return ret;
+		}
+		machine->gpio_requested |= GPIO_SPKR_EN;
+
+		gpio_direction_output(pdata->gpio_spkr_en, 0);
+	}
+
+	if (gpio_is_valid(pdata->gpio_hp_mute)) {
+		ret = gpio_request(pdata->gpio_hp_mute, "hp_mute");
+		if (ret) {
+			dev_err(card->dev, "cannot get hp_mute gpio\n");
+			return ret;
+		}
+		machine->gpio_requested |= GPIO_HP_MUTE;
+
+		gpio_direction_output(pdata->gpio_hp_mute, 0);
+	}
+
+	if (gpio_is_valid(pdata->gpio_int_mic_en)) {
+		ret = gpio_request(pdata->gpio_int_mic_en, "int_mic_en");
+		if (ret) {
+			dev_err(card->dev, "cannot get int_mic_en gpio\n");
+			return ret;
+		}
+		machine->gpio_requested |= GPIO_INT_MIC_EN;
+
+		/* Disable int mic; enable signal is active-high */
+		gpio_direction_output(pdata->gpio_int_mic_en, 0);
+	}
+
+	if (gpio_is_valid(pdata->gpio_ext_mic_en)) {
+		ret = gpio_request(pdata->gpio_ext_mic_en, "ext_mic_en");
+		if (ret) {
+			dev_err(card->dev, "cannot get ext_mic_en gpio\n");
+			return ret;
+		}
+		machine->gpio_requested |= GPIO_EXT_MIC_EN;
+
+		/* Enable ext mic; enable signal is active-low */
+		gpio_direction_output(pdata->gpio_ext_mic_en, 0);
+	}
+
+	ret = snd_soc_add_controls(codec, tegra_max98095_controls,
+				   ARRAY_SIZE(tegra_max98095_controls));
+	if (ret < 0)
+		return ret;
+
+	snd_soc_dapm_new_controls(dapm, tegra_max98095_dapm_widgets,
+			ARRAY_SIZE(tegra_max98095_dapm_widgets));
+
+	snd_soc_dapm_add_routes(dapm, enterprise_audio_map,
+			ARRAY_SIZE(enterprise_audio_map));
+
+	ret = snd_soc_jack_new(codec, "Headset Jack", SND_JACK_HEADSET,
+			&tegra_max98095_hp_jack);
+	if (ret < 0)
+		return ret;
+
+#ifdef CONFIG_SWITCH
+	snd_soc_jack_notifier_register(&tegra_max98095_hp_jack,
+		&headset_switch_nb);
+#else /*gpio based headset detection*/
+	snd_soc_jack_add_pins(&tegra_max98095_hp_jack,
+		ARRAY_SIZE(tegra_max98095_hp_jack_pins),
+		tegra_max98095_hp_jack_pins);
+#endif
+
+	/* max98095_headset_detect(codec, &tegra_max98095_hp_jack,
+		SND_JACK_HEADSET); */
+
+	snd_soc_dapm_nc_pin(dapm, "INA1");
+	snd_soc_dapm_nc_pin(dapm, "INA2");
+	snd_soc_dapm_nc_pin(dapm, "INB1");
+	snd_soc_dapm_nc_pin(dapm, "INB2");
+	snd_soc_dapm_sync(dapm);
+
+	return 0;
+}
+
+static struct snd_soc_dai_link tegra_max98095_dai[] = {
+	{
+		.name = "MAX98095",
+		.stream_name = "MAX98095 HIFI",
+		.codec_name = "max98095.4-0010",
+		.platform_name = "tegra-pcm-audio",
+		.cpu_dai_name = "tegra30-i2s.1",
+		.codec_dai_name = "HiFi",
+		.init = tegra_max98095_init,
+		.ops = &tegra_max98095_ops,
+	},
+	{
+		.name = "SPDIF",
+		.stream_name = "SPDIF PCM",
+		.codec_name = "spdif-dit.0",
+		.platform_name = "tegra-pcm-audio",
+		.cpu_dai_name = "tegra30-spdif",
+		.codec_dai_name = "dit-hifi",
+		.ops = &tegra_spdif_ops,
+	},
+};
+
+static int tegra30_soc_set_bias_level(struct snd_soc_card *card,
+					enum snd_soc_bias_level level)
+{
+	struct tegra_max98095 *machine = snd_soc_card_get_drvdata(card);
+
+	if (machine->bias_level == SND_SOC_BIAS_OFF &&
+		level != SND_SOC_BIAS_OFF)
+		tegra_asoc_utils_clk_enable(&machine->util_data);
+
+	machine->bias_level = level;
+
+	return 0;
+}
+
+static int tegra30_soc_set_bias_level_post(struct snd_soc_card *card,
+					enum snd_soc_bias_level level)
+{
+	struct tegra_max98095 *machine = snd_soc_card_get_drvdata(card);
+
+	if (level == SND_SOC_BIAS_OFF)
+		tegra_asoc_utils_clk_disable(&machine->util_data);
+
+	return 0 ;
+}
+
+static struct snd_soc_card snd_soc_tegra_max98095 = {
+	.name = "tegra-max98095",
+	.dai_link = tegra_max98095_dai,
+	.num_links = ARRAY_SIZE(tegra_max98095_dai),
+	.set_bias_level = tegra30_soc_set_bias_level,
+	.set_bias_level_post = tegra30_soc_set_bias_level_post,
+};
+
+static __devinit int tegra_max98095_driver_probe(struct platform_device *pdev)
+{
+	struct snd_soc_card *card = &snd_soc_tegra_max98095;
+	struct tegra_max98095 *machine;
+	struct tegra_asoc_platform_data *pdata;
+	int ret;
+
+	pdata = pdev->dev.platform_data;
+	if (!pdata) {
+		dev_err(&pdev->dev, "No platform data supplied\n");
+		return -EINVAL;
+	}
+
+	machine = kzalloc(sizeof(struct tegra_max98095), GFP_KERNEL);
+	if (!machine) {
+		dev_err(&pdev->dev, "Can't allocate tegra_max98095 struct\n");
+		return -ENOMEM;
+	}
+
+	machine->pdata = pdata;
+
+	ret = tegra_asoc_utils_init(&machine->util_data, &pdev->dev);
+	if (ret)
+		goto err_free_machine;
+
+	card->dev = &pdev->dev;
+	platform_set_drvdata(pdev, card);
+	snd_soc_card_set_drvdata(card, machine);
+
+#ifdef CONFIG_SWITCH
+	/* Add h2w switch class support */
+	ret = switch_dev_register(&wired_switch_dev);
+	if (ret < 0) {
+		dev_err(&pdev->dev, "not able to register switch device\n");
+		goto err_fini_utils;
+	}
+#endif
+
+	ret = snd_soc_register_card(card);
+	if (ret) {
+		dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n",
+			ret);
+		goto err_switch_unregister;
+	}
+
+	return 0;
+
+err_switch_unregister:
+#ifdef CONFIG_SWITCH
+	switch_dev_unregister(&wired_switch_dev);
+#endif
+err_fini_utils:
+	tegra_asoc_utils_fini(&machine->util_data);
+err_free_machine:
+	kfree(machine);
+	return ret;
+}
+
+static int __devexit tegra_max98095_driver_remove(struct platform_device *pdev)
+{
+	struct snd_soc_card *card = platform_get_drvdata(pdev);
+	struct tegra_max98095 *machine = snd_soc_card_get_drvdata(card);
+	struct tegra_asoc_platform_data *pdata = machine->pdata;
+
+	snd_soc_unregister_card(card);
+
+#ifdef CONFIG_SWITCH
+	switch_dev_unregister(&wired_switch_dev);
+#endif
+
+	tegra_asoc_utils_fini(&machine->util_data);
+
+	if (machine->gpio_requested & GPIO_EXT_MIC_EN)
+		gpio_free(pdata->gpio_ext_mic_en);
+	if (machine->gpio_requested & GPIO_INT_MIC_EN)
+		gpio_free(pdata->gpio_int_mic_en);
+	if (machine->gpio_requested & GPIO_HP_MUTE)
+		gpio_free(pdata->gpio_hp_mute);
+	if (machine->gpio_requested & GPIO_SPKR_EN)
+		gpio_free(pdata->gpio_spkr_en);
+
+	kfree(machine);
+
+	return 0;
+}
+
+static struct platform_driver tegra_max98095_driver = {
+	.driver = {
+		.name = DRV_NAME,
+		.owner = THIS_MODULE,
+		.pm = &snd_soc_pm_ops,
+	},
+	.probe = tegra_max98095_driver_probe,
+	.remove = __devexit_p(tegra_max98095_driver_remove),
+};
+
+static int __init tegra_max98095_modinit(void)
+{
+	return platform_driver_register(&tegra_max98095_driver);
+}
+module_init(tegra_max98095_modinit);
+
+static void __exit tegra_max98095_modexit(void)
+{
+	platform_driver_unregister(&tegra_max98095_driver);
+}
+module_exit(tegra_max98095_modexit);
+
+MODULE_AUTHOR("Ravindra Lokhande <rlokhande@nvidia.com>");
+MODULE_DESCRIPTION("Tegra+MAX98095 machine ASoC driver");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:" DRV_NAME);