kernel: soc: tegra: Add machine driver for TIcodec.

Machine driver for TI codec AIC3262.
bug 816608

Change-Id: I4b339b218ec4f2097518d001fb65778c2d8155d3
Reviewed-on: http://git-master/r/67818
Reviewed-by: Vinod Gopalakrishnakurup <vinodg@nvidia.com>
Tested-by: Vinod Gopalakrishnakurup <vinodg@nvidia.com>
Reviewed-by: Scott Peterson <speterson@nvidia.com>

Rebase-Id: R1b0caddfe8f1334004c51cfe886b24d3936c0bd9

3 files changed, 1096 insertions, 0 deletions

diff --git a/sound/soc/tegra/Kconfig b/sound/soc/tegra/Kconfig
index 0381b871c558..2119cd4a7ed6 100644
--- a/sound/soc/tegra/Kconfig
+++ b/sound/soc/tegra/Kconfig
@@ -138,3 +138,24 @@ config SND_SOC_TEGRA_MAX98088
 	  Say Y or M here if you want to add support for SoC audio on Tegra
 	  boards using the MAX98088 codec. Currently, only supported board is
 	  Enterprise.
+
+config MACH_HAS_SND_SOC_TEGRA_TLV320AIC326X
+	bool
+	help
+	  Machines that use the SND_SOC_TEGRA_TLV320AIC326X driver should select
+	  this config option, in order to allow the user to enable
+	  SND_SOC_TEGRA_TLV320AIC326X.
+
+config SND_SOC_TEGRA_TLV320AIC326X
+	tristate "SoC Audio support for Tegra boards using a TI AIC326x codec"
+	depends on SND_SOC_TEGRA && I2C && TEGRA_DC
+	depends on MACH_HAS_SND_SOC_TEGRA_TLV320AIC326X
+	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_TLV320AIC326X
+	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 TI AIC326X codec.
diff --git a/sound/soc/tegra/Makefile b/sound/soc/tegra/Makefile
index dd65d2c3771e..7934b8ecebad 100644
--- a/sound/soc/tegra/Makefile
+++ b/sound/soc/tegra/Makefile
@@ -25,9 +25,11 @@ snd-soc-tegra-trimslice-objs := trimslice.o
 snd-soc-tegra-alc5632-objs := tegra_alc5632.o
 snd-soc-tegra-wm8753-objs := tegra_wm8753.o
 snd-soc-tegra-max98088-objs := tegra_max98088.o
+snd-soc-tegra-aic326x-objs := tegra_aic326x.o
 
 obj-$(CONFIG_SND_SOC_TEGRA_WM8903) += snd-soc-tegra-wm8903.o
 obj-$(CONFIG_SND_SOC_TEGRA_TRIMSLICE) += snd-soc-tegra-trimslice.o
 obj-$(CONFIG_SND_SOC_TEGRA_ALC5632) += snd-soc-tegra-alc5632.o
 obj-$(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
diff --git a/sound/soc/tegra/tegra_aic326x.c b/sound/soc/tegra/tegra_aic326x.c
new file mode 100644
index 000000000000..635756379f23
--- /dev/null
+++ b/sound/soc/tegra/tegra_aic326x.c
@@ -0,0 +1,1073 @@
+/*
+ * tegra_aic326x.c - Tegra machine ASoC driver for boards using TI 3262 codec.
+ *
+ * Author: Vinod G. <vinodg@nvidia.com>
+ * Copyright (C) 2011 - NVIDIA, Inc.
+ *
+ * Based on code copyright/by:
+ *
+ * (c) 2010, 2011 Nvidia Graphics Pvt. Ltd.
+ *
+ * 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_aic326x_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/tlv320aic326x.h"
+
+#include "tegra_pcm.h"
+#include "tegra_asoc_utils.h"
+
+#ifdef CONFIG_ARCH_TEGRA_2x_SOC
+#include "tegra20_das.h"
+#else
+#include "tegra30_ahub.h"
+#include "tegra30_i2s.h"
+#include "tegra30_dam.h"
+#endif
+
+
+#define DRV_NAME "tegra-snd-aic326x"
+
+#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)
+
+#define DAI_LINK_HIFI		0
+#define DAI_LINK_SPDIF		1
+#define DAI_LINK_BTSCO		2
+#define DAI_LINK_VOICE_CALL	3
+#define DAI_LINK_BT_VOICE_CALL	4
+#define NUM_DAI_LINKS	5
+
+#ifndef CONFIG_ARCH_TEGRA_2x_SOC
+const char *tegra_aic326x_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_aic326x {
+	struct tegra_asoc_utils_data util_data;
+	struct tegra_aic326x_platform_data *pdata;
+	struct regulator *audio_reg;
+	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
+};
+
+static int tegra_aic326x_call_mode_info(struct snd_kcontrol *kcontrol,
+			struct snd_ctl_elem_info *uinfo)
+{
+	uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
+	uinfo->count = 1;
+	uinfo->value.integer.min = 0;
+	uinfo->value.integer.max = 1;
+	return 0;
+}
+
+static int tegra_aic326x_call_mode_get(struct snd_kcontrol *kcontrol,
+		struct snd_ctl_elem_value *ucontrol)
+{
+	struct tegra_aic326x *machine = snd_kcontrol_chip(kcontrol);
+
+	ucontrol->value.integer.value[0] = machine->is_call_mode;
+
+	return 0;
+}
+
+static int tegra_aic326x_call_mode_put(struct snd_kcontrol *kcontrol,
+		struct snd_ctl_elem_value *ucontrol)
+{
+	struct tegra_aic326x *machine = snd_kcontrol_chip(kcontrol);
+	int is_call_mode_new = ucontrol->value.integer.value[0];
+	int codec_index;
+
+	if (machine->is_call_mode == is_call_mode_new)
+		return 0;
+
+	if (machine->is_device_bt)
+		codec_index = BT_SCO;
+	else
+		codec_index = HIFI_CODEC;
+
+	if (is_call_mode_new) {
+#ifndef CONFIG_ARCH_TEGRA_2x_SOC
+		if (machine->codec_info[codec_index].rate == 0 ||
+			machine->codec_info[codec_index].channels == 0)
+				return -EINVAL;
+
+		tegra30_make_voice_call_connections(
+			&machine->codec_info[codec_index],
+			&machine->codec_info[BASEBAND]);
+#endif
+	} else {
+#ifndef CONFIG_ARCH_TEGRA_2x_SOC
+		tegra30_break_voice_call_connections(
+			&machine->codec_info[codec_index],
+			&machine->codec_info[BASEBAND]);
+#endif
+	}
+
+	machine->is_call_mode = is_call_mode_new;
+
+	return 1;
+}
+
+struct snd_kcontrol_new tegra_aic326x_call_mode_control = {
+	.access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
+	.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
+	.name = "Call Mode Switch",
+	.private_value = 0xffff,
+	.info = tegra_aic326x_call_mode_info,
+	.get = tegra_aic326x_call_mode_get,
+	.put = tegra_aic326x_call_mode_put
+};
+
+#ifndef CONFIG_ARCH_TEGRA_2x_SOC
+static int tegra_aic326x_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_aic326x_get_mclk(int srate)
+{
+	int mclk = 0;
+	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 = -EINVAL;
+		break;
+	}
+
+	return mclk;
+}
+
+static int tegra_aic326x_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_aic326x *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
+	int srate, mclk, sample_size, daifmt;
+	int err;
+
+	switch (params_format(params)) {
+	case SNDRV_PCM_FORMAT_S16_LE:
+		sample_size = 16;
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	srate = params_rate(params);
+
+	mclk = tegra_aic326x_get_mclk(srate);
+	if (mclk < 0)
+		return mclk;
+
+	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);
+
+	daifmt = SND_SOC_DAIFMT_I2S |	SND_SOC_DAIFMT_NB_NF |
+					SND_SOC_DAIFMT_CBS_CFS;
+
+	err = snd_soc_dai_set_fmt(codec_dai, daifmt);
+	if (err < 0) {
+		dev_err(card->dev, "codec_dai fmt not set\n");
+		return err;
+	}
+
+	err = snd_soc_dai_set_fmt(cpu_dai, daifmt);
+	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;
+	}
+
+#ifdef CONFIG_ARCH_TEGRA_2x_SOC
+	err = tegra20_das_connect_dac_to_dap(TEGRA20_DAS_DAP_SEL_DAC1,
+					TEGRA20_DAS_DAP_ID_1);
+	if (err < 0) {
+		dev_err(card->dev, "failed to set dap-dac path\n");
+		return err;
+	}
+
+	err = tegra20_das_connect_dap_to_dac(TEGRA20_DAS_DAP_ID_1,
+					TEGRA20_DAS_DAP_SEL_DAC1);
+	if (err < 0) {
+		dev_err(card->dev, "failed to set dac-dap path\n");
+		return err;
+	}
+#else
+	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
+		tegra_aic326x_set_dam_cif(i2s->dam_ifc, srate,
+				params_channels(params), sample_size);
+#endif
+
+	return 0;
+}
+
+static int tegra_aic326x_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_aic326x *machine = snd_soc_card_get_drvdata(card);
+	int srate, mclk, min_mclk;
+	int err;
+
+	srate = params_rate(params);
+
+	mclk = tegra_aic326x_get_mclk(srate);
+	if (mclk < 0)
+		return mclk;
+
+	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_aic326x_bt_hw_params(struct snd_pcm_substream *substream,
+		struct snd_pcm_hw_params *params)
+{
+	struct snd_soc_pcm_runtime *rtd = substream->private_data;
+#ifndef CONFIG_ARCH_TEGRA_2x_SOC
+	struct tegra30_i2s *i2s = snd_soc_dai_get_drvdata(rtd->cpu_dai);
+#endif
+	struct snd_soc_card *card = rtd->card;
+	struct tegra_aic326x *machine = snd_soc_card_get_drvdata(card);
+	int err, srate, mclk, min_mclk, sample_size;
+
+	switch (params_format(params)) {
+	case SNDRV_PCM_FORMAT_S16_LE:
+		sample_size = 16;
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	srate = params_rate(params);
+
+	mclk = tegra_aic326x_get_mclk(srate);
+	if (mclk < 0)
+		return mclk;
+
+	min_mclk = 64 * 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);
+
+	err = snd_soc_dai_set_fmt(rtd->cpu_dai,
+			SND_SOC_DAIFMT_DSP_A |
+			SND_SOC_DAIFMT_NB_NF |
+			SND_SOC_DAIFMT_CBS_CFS);
+	if (err < 0) {
+		dev_err(rtd->codec->card->dev, "cpu_dai fmt not set\n");
+		return err;
+	}
+
+#ifndef CONFIG_ARCH_TEGRA_2x_SOC
+	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
+		tegra_aic326x_set_dam_cif(i2s->dam_ifc, params_rate(params),
+				params_channels(params), sample_size);
+#endif
+
+	return 0;
+}
+
+static int tegra_aic326x_hw_free(struct snd_pcm_substream *substream)
+{
+	struct snd_soc_pcm_runtime *rtd = substream->private_data;
+	struct tegra_aic326x *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_aic326x_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_aic326x_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);
+}
+#endif
+
+static int tegra_aic326x_voice_call_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_codec *codec = rtd->codec;
+	struct snd_soc_card *card = codec->card;
+	struct tegra_aic326x *machine = snd_soc_card_get_drvdata(card);
+	int srate, mclk;
+	int err;
+
+	srate = params_rate(params);
+	mclk = tegra_aic326x_get_mclk(srate);
+	if (mclk < 0)
+		return mclk;
+
+
+	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_DSP_B |
+					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_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
+	/* codec configuration */
+	machine->codec_info[HIFI_CODEC].rate = params_rate(params);
+	machine->codec_info[HIFI_CODEC].channels = params_channels(params);
+	machine->codec_info[HIFI_CODEC].bitsize = 16;
+	machine->codec_info[HIFI_CODEC].is_i2smaster = 1;
+	machine->codec_info[HIFI_CODEC].is_format_dsp = 0;
+
+	/* baseband configuration */
+	machine->codec_info[BASEBAND].bitsize = 16;
+	machine->codec_info[BASEBAND].is_i2smaster = 1;
+	machine->codec_info[BASEBAND].is_format_dsp = 1;
+#endif
+
+	machine->is_device_bt = 0;
+
+	return 0;
+}
+
+static void tegra_aic326x_voice_call_shutdown(
+					struct snd_pcm_substream *substream)
+{
+#ifndef CONFIG_ARCH_TEGRA_2x_SOC
+	struct snd_soc_pcm_runtime *rtd = substream->private_data;
+	struct tegra_aic326x *machine  =
+			snd_soc_card_get_drvdata(rtd->codec->card);
+
+	machine->codec_info[HIFI_CODEC].rate = 0;
+	machine->codec_info[HIFI_CODEC].channels = 0;
+#endif
+}
+
+static int tegra_aic326x_bt_voice_call_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_aic326x *machine = snd_soc_card_get_drvdata(card);
+	int err, srate, mclk, min_mclk;
+
+	srate = params_rate(params);
+
+	mclk = tegra_aic326x_get_mclk(srate);
+	if (mclk < 0)
+		return mclk;
+
+	min_mclk = 64 * 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);
+
+#ifndef CONFIG_ARCH_TEGRA_2x_SOC
+	/* codec configuration */
+	machine->codec_info[BT_SCO].rate = params_rate(params);
+	machine->codec_info[BT_SCO].channels = params_channels(params);
+	machine->codec_info[BT_SCO].bitsize = 16;
+	machine->codec_info[BT_SCO].is_i2smaster = 1;
+	machine->codec_info[BT_SCO].is_format_dsp = 1;
+
+	/* baseband configuration */
+	machine->codec_info[BASEBAND].bitsize = 16;
+	machine->codec_info[BASEBAND].is_i2smaster = 1;
+	machine->codec_info[BASEBAND].is_format_dsp = 1;
+#endif
+
+	machine->is_device_bt = 1;
+
+	return 0;
+}
+
+static void tegra_aic326x_bt_voice_call_shutdown(
+				struct snd_pcm_substream *substream)
+{
+	struct snd_soc_pcm_runtime *rtd = substream->private_data;
+	struct tegra_aic326x *machine  =
+			snd_soc_card_get_drvdata(rtd->codec->card);
+
+#ifndef CONFIG_ARCH_TEGRA_2x_SOC
+	machine->codec_info[BT_SCO].rate = 0;
+	machine->codec_info[BT_SCO].channels = 0;
+#endif
+}
+
+static struct snd_soc_ops tegra_aic326x_hifi_ops = {
+	.hw_params = tegra_aic326x_hw_params,
+	.hw_free = tegra_aic326x_hw_free,
+#ifndef CONFIG_ARCH_TEGRA_2x_SOC
+	.startup = tegra_aic326x_startup,
+	.shutdown = tegra_aic326x_shutdown,
+#endif
+};
+
+static struct snd_soc_ops tegra_aic326x_spdif_ops = {
+	.hw_params = tegra_aic326x_spdif_hw_params,
+	.hw_free = tegra_aic326x_hw_free,
+};
+
+static struct snd_soc_ops tegra_aic326x_voice_call_ops = {
+	.hw_params = tegra_aic326x_voice_call_hw_params,
+	.shutdown = tegra_aic326x_voice_call_shutdown,
+	.hw_free = tegra_aic326x_hw_free,
+};
+
+static struct snd_soc_ops tegra_aic326x_bt_voice_call_ops = {
+	.hw_params = tegra_aic326x_bt_voice_call_hw_params,
+	.shutdown = tegra_aic326x_bt_voice_call_shutdown,
+	.hw_free = tegra_aic326x_hw_free,
+};
+
+static struct snd_soc_ops tegra_aic326x_bt_ops = {
+	.hw_params = tegra_aic326x_bt_hw_params,
+	.hw_free = tegra_aic326x_hw_free,
+#ifndef CONFIG_ARCH_TEGRA_2x_SOC
+	.startup = tegra_aic326x_startup,
+	.shutdown = tegra_aic326x_shutdown,
+#endif
+};
+
+static struct snd_soc_jack tegra_aic326x_hp_jack;
+
+#ifdef CONFIG_SWITCH
+static struct switch_dev aic326x_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 aic326x_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(&aic326x_wired_switch_dev, state);
+
+	return NOTIFY_OK;
+}
+
+static struct notifier_block aic326x_headset_switch_nb = {
+	.notifier_call = aic326x_headset_switch_notify,
+};
+#else
+static struct snd_soc_jack_pin tegra_aic326x_hp_jack_pins[] = {
+	{
+		.pin = "Headphone Jack",
+		.mask = SND_JACK_HEADPHONE,
+	},
+};
+#endif
+
+static int tegra_aic326x_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_aic326x *machine = snd_soc_card_get_drvdata(card);
+	struct tegra_aic326x_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_aic326x_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_aic326x *machine = snd_soc_card_get_drvdata(card);
+	struct tegra_aic326x_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_aic326x_dapm_widgets[] = {
+	SND_SOC_DAPM_SPK("Int Spk", tegra_aic326x_event_int_spk),
+	SND_SOC_DAPM_HP("Earpiece", NULL),
+	SND_SOC_DAPM_HP("Headphone Jack", tegra_aic326x_event_hp),
+	SND_SOC_DAPM_MIC("Mic Jack", NULL),
+	SND_SOC_DAPM_INPUT("Ext Mic"),
+	SND_SOC_DAPM_LINE("Linein", NULL),
+};
+
+static const struct snd_soc_dapm_route aic326x_audio_map[] = {
+	{"Int Spk", NULL, "SPKL"},
+	{"Int Spk", NULL, "SPKR"},
+	{"Earpiece", NULL, "RECL"},
+	{"Earpiece", NULL, "RECR"},
+	{"Headphone Jack", NULL, "HPL"},
+	{"Headphone Jack", NULL, "HPR"},
+	{"IN2L", NULL, "Mic Jack"},
+
+	/*TODO correct */
+	/* external mic is stero */
+	{"IN2L", NULL, "Ext Mic"},
+	{"IN2R", NULL, "Ext Mic"},
+
+	/* Line in */
+	{"IN2L", NULL, "Linein"},
+	{"IN2R", NULL, "Linein"},
+};
+
+static const struct snd_kcontrol_new tegra_aic326x_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("Ext Mic"),
+	SOC_DAPM_PIN_SWITCH("Linein"),
+};
+
+static int tegra_aic326x_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_aic326x *machine = snd_soc_card_get_drvdata(card);
+	struct tegra_aic326x_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 (machine_is_whistler()) {
+		machine->audio_reg = regulator_get(NULL, "avddio_audio");
+		if (IS_ERR(machine->audio_reg)) {
+			dev_err(card->dev, "cannot get avddio_audio reg\n");
+			ret = PTR_ERR(machine->audio_reg);
+			return ret;
+		}
+
+		ret = regulator_enable(machine->audio_reg);
+		if (ret) {
+			dev_err(card->dev, "cannot enable avddio_audio reg\n");
+			regulator_put(machine->audio_reg);
+			machine->audio_reg = NULL;
+			return ret;
+		}
+	}
+
+	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_aic326x_controls,
+				   ARRAY_SIZE(tegra_aic326x_controls));
+	if (ret < 0)
+		return ret;
+
+	snd_soc_dapm_new_controls(dapm, tegra_aic326x_dapm_widgets,
+					ARRAY_SIZE(tegra_aic326x_dapm_widgets));
+
+	snd_soc_dapm_add_routes(dapm, aic326x_audio_map,
+					ARRAY_SIZE(aic326x_audio_map));
+
+	ret = snd_soc_jack_new(codec, "Headset Jack", SND_JACK_HEADSET,
+			&tegra_aic326x_hp_jack);
+	if (ret < 0)
+		return ret;
+
+#ifdef CONFIG_SWITCH
+	snd_soc_jack_notifier_register(&tegra_aic326x_hp_jack,
+		&aic326x_headset_switch_nb);
+#else /*gpio based headset detection*/
+	snd_soc_jack_add_pins(&tegra_aic326x_hp_jack,
+		ARRAY_SIZE(tegra_aic326x_hp_jack_pins),
+		tegra_aic326x_hp_jack_pins);
+#endif
+
+	aic326x_headset_detect(codec, &tegra_aic326x_hp_jack,
+		SND_JACK_HEADSET);
+
+	/* Add call mode switch control */
+	ret = snd_ctl_add(codec->card->snd_card,
+			snd_ctl_new1(&tegra_aic326x_call_mode_control,
+				machine));
+	if (ret < 0)
+		return ret;
+
+	snd_soc_dapm_nc_pin(dapm, "IN2L");
+	snd_soc_dapm_nc_pin(dapm, "IN2R");
+	snd_soc_dapm_sync(dapm);
+
+	return 0;
+}
+
+static struct snd_soc_dai_link tegra_aic326x_dai[] = {
+	[DAI_LINK_HIFI] = {
+		.name = "AIC3262",
+		.stream_name = "AIC3262 PCM HIFI",
+		.codec_name = "aic3262-codec.4-0018",
+		.platform_name = "tegra-pcm-audio",
+#ifdef CONFIG_ARCH_TEGRA_2x_SOC
+		.cpu_dai_name = "tegra20-i2s.0",
+#endif
+		.codec_dai_name = "aic3262-asi1",
+		.init = tegra_aic326x_init,
+		.ops = &tegra_aic326x_hifi_ops,
+		},
+	[DAI_LINK_SPDIF] = {
+		.name = "SPDIF",
+		.stream_name = "SPDIF PCM",
+		.codec_name = "spdif-dit.0",
+		.platform_name = "tegra-pcm-audio",
+#ifdef CONFIG_ARCH_TEGRA_2x_SOC
+		.cpu_dai_name = "tegra20-spdif",
+#else
+		.cpu_dai_name = "tegra30-spdif",
+#endif
+		.codec_dai_name = "dit-hifi",
+		.ops = &tegra_aic326x_spdif_ops,
+		},
+	[DAI_LINK_BTSCO] = {
+		.name = "BT-SCO",
+		.stream_name = "BT SCO PCM",
+		.codec_name = "spdif-dit.1",
+		.platform_name = "tegra-pcm-audio",
+#ifdef CONFIG_ARCH_TEGRA_2x_SOC
+		.cpu_dai_name = "tegra20-i2s.1",
+#endif
+		.codec_dai_name = "dit-hifi",
+		.ops = &tegra_aic326x_bt_ops,
+		},
+	/*[DAI_LINK_VOICE_CALL] = {
+			.name = "VOICE CALL",
+			.stream_name = "VOICE CALL PCM",
+			.codec_name = "aic3262-codec.4-0018",
+			.platform_name = "tegra-pcm-audio",
+			.cpu_dai_name = "dit-hifi",
+			.codec_dai_name = "aic3262-asi2",
+			.ops = &tegra_aic326x_voice_call_ops,
+		},*/
+	/* TODO - enabling this cause binding issue- figure out */
+	/*[DAI_LINK_BT_VOICE_CALL] = {
+			.name = "BT VOICE CALL",
+			.stream_name = "BT VOICE CALL PCM",
+			.codec_name = "spdif-dit.2",
+			.platform_name = "tegra-pcm-audio",
+			.cpu_dai_name = "dit-hifi",
+			.codec_dai_name = "dit-hifi",
+			.ops = &tegra_aic326x_bt_voice_call_ops,
+		},*/
+};
+
+static struct snd_soc_card snd_soc_tegra_aic326x = {
+	.name = "tegra-aic326x",
+	.dai_link = tegra_aic326x_dai,
+	.num_links = ARRAY_SIZE(tegra_aic326x_dai),
+};
+
+static __devinit int tegra_aic326x_driver_probe(struct platform_device *pdev)
+{
+	struct snd_soc_card *card = &snd_soc_tegra_aic326x;
+	struct tegra_aic326x *machine;
+	struct tegra_aic326x_platform_data *pdata;
+	int ret, i;
+
+	pdata = pdev->dev.platform_data;
+	if (!pdata) {
+		dev_err(&pdev->dev, "No platform data supplied\n");
+		return -EINVAL;
+	}
+
+	machine = kzalloc(sizeof(struct tegra_aic326x), GFP_KERNEL);
+	if (!machine) {
+		dev_err(&pdev->dev, "Can't allocate tegra_aic326x 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(&aic326x_wired_switch_dev);
+	if (ret < 0) {
+		dev_err(&pdev->dev, "not able to register switch device %d\n",
+			ret);
+		goto err_fini_utils;
+	}
+#endif
+
+#ifndef CONFIG_ARCH_TEGRA_2x_SOC
+	for (i = 0; i < NUM_I2S_DEVICES ; i++)
+		machine->codec_info[i].i2s_id = pdata->audio_port_id[i];
+
+	machine->codec_info[BASEBAND].rate = pdata->baseband_param.rate;
+	machine->codec_info[BASEBAND].channels = pdata->baseband_param.channels;
+
+	tegra_aic326x_dai[DAI_LINK_HIFI].cpu_dai_name =
+	tegra_aic326x_i2s_dai_name[machine->codec_info[HIFI_CODEC].i2s_id];
+
+	tegra_aic326x_dai[DAI_LINK_BTSCO].cpu_dai_name =
+	tegra_aic326x_i2s_dai_name[machine->codec_info[BT_SCO].i2s_id];
+#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(&aic326x_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_aic326x_driver_remove(struct platform_device *pdev)
+{
+	struct snd_soc_card *card = platform_get_drvdata(pdev);
+	struct tegra_aic326x *machine = snd_soc_card_get_drvdata(card);
+	struct tegra_aic326x_platform_data *pdata = machine->pdata;
+
+	snd_soc_unregister_card(card);
+
+#ifdef CONFIG_SWITCH
+	switch_dev_unregister(&aic326x_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_aic326x_driver = {
+	.driver = {
+		.name = DRV_NAME,
+		.owner = THIS_MODULE,
+		.pm = &snd_soc_pm_ops,
+	},
+	.probe = tegra_aic326x_driver_probe,
+	.remove = __devexit_p(tegra_aic326x_driver_remove),
+};
+
+static int __init tegra_aic326x_modinit(void)
+{
+	return platform_driver_register(&tegra_aic326x_driver);
+}
+module_init(tegra_aic326x_modinit);
+
+static void __exit tegra_aic326x_modexit(void)
+{
+	platform_driver_unregister(&tegra_aic326x_driver);
+}
+module_exit(tegra_aic326x_modexit);
+
+/* Module information */
+MODULE_AUTHOR("Vinod G. <vinodg@nvidia.com>");
+MODULE_DESCRIPTION("Tegra+AIC3262 machine ASoC driver");
+MODULE_DESCRIPTION("Tegra ALSA SoC");
+MODULE_LICENSE("GPL");
+