1 files changed, 872 insertions, 0 deletions

diff --git a/sound/soc/tegra/tegra210_admaif.c b/sound/soc/tegra/tegra210_admaif.c
new file mode 100644
index 000000000..1a2e868a6
--- /dev/null
+++ b/sound/soc/tegra/tegra210_admaif.c
@@ -0,0 +1,872 @@
+// SPDX-License-Identifier: GPL-2.0-only
+//
+// tegra210_admaif.c - Tegra ADMAIF driver
+//
+// Copyright (c) 2020 NVIDIA CORPORATION.  All rights reserved.
+
+#include <linux/clk.h>
+#include <linux/device.h>
+#include <linux/module.h>
+#include <linux/of_platform.h>
+#include <linux/platform_device.h>
+#include <linux/pm_runtime.h>
+#include <linux/regmap.h>
+#include <sound/pcm_params.h>
+#include <sound/soc.h>
+#include "tegra210_admaif.h"
+#include "tegra_cif.h"
+#include "tegra_pcm.h"
+
+#define CH_REG(offset, reg, id)						       \
+	((offset) + (reg) + (TEGRA_ADMAIF_CHANNEL_REG_STRIDE * (id)))
+
+#define CH_TX_REG(reg, id) CH_REG(admaif->soc_data->tx_base, reg, id)
+
+#define CH_RX_REG(reg, id) CH_REG(admaif->soc_data->rx_base, reg, id)
+
+#define REG_DEFAULTS(id, rx_ctrl, tx_ctrl, tx_base, rx_base)		       \
+	{ CH_REG(rx_base, TEGRA_ADMAIF_RX_INT_MASK, id), 0x00000001 },	       \
+	{ CH_REG(rx_base, TEGRA_ADMAIF_CH_ACIF_RX_CTRL, id), 0x00007700 },     \
+	{ CH_REG(rx_base, TEGRA_ADMAIF_RX_FIFO_CTRL, id), rx_ctrl },	       \
+	{ CH_REG(tx_base, TEGRA_ADMAIF_TX_INT_MASK, id), 0x00000001 },	       \
+	{ CH_REG(tx_base, TEGRA_ADMAIF_CH_ACIF_TX_CTRL, id), 0x00007700 },     \
+	{ CH_REG(tx_base, TEGRA_ADMAIF_TX_FIFO_CTRL, id), tx_ctrl }
+
+#define ADMAIF_REG_DEFAULTS(id, chip)					       \
+	REG_DEFAULTS((id) - 1,						       \
+		chip ## _ADMAIF_RX ## id ## _FIFO_CTRL_REG_DEFAULT,	       \
+		chip ## _ADMAIF_TX ## id ## _FIFO_CTRL_REG_DEFAULT,	       \
+		chip ## _ADMAIF_TX_BASE,				       \
+		chip ## _ADMAIF_RX_BASE)
+
+static const struct reg_default tegra186_admaif_reg_defaults[] = {
+	{(TEGRA_ADMAIF_GLOBAL_CG_0 + TEGRA186_ADMAIF_GLOBAL_BASE), 0x00000003},
+	ADMAIF_REG_DEFAULTS(1, TEGRA186),
+	ADMAIF_REG_DEFAULTS(2, TEGRA186),
+	ADMAIF_REG_DEFAULTS(3, TEGRA186),
+	ADMAIF_REG_DEFAULTS(4, TEGRA186),
+	ADMAIF_REG_DEFAULTS(5, TEGRA186),
+	ADMAIF_REG_DEFAULTS(6, TEGRA186),
+	ADMAIF_REG_DEFAULTS(7, TEGRA186),
+	ADMAIF_REG_DEFAULTS(8, TEGRA186),
+	ADMAIF_REG_DEFAULTS(9, TEGRA186),
+	ADMAIF_REG_DEFAULTS(10, TEGRA186),
+	ADMAIF_REG_DEFAULTS(11, TEGRA186),
+	ADMAIF_REG_DEFAULTS(12, TEGRA186),
+	ADMAIF_REG_DEFAULTS(13, TEGRA186),
+	ADMAIF_REG_DEFAULTS(14, TEGRA186),
+	ADMAIF_REG_DEFAULTS(15, TEGRA186),
+	ADMAIF_REG_DEFAULTS(16, TEGRA186),
+	ADMAIF_REG_DEFAULTS(17, TEGRA186),
+	ADMAIF_REG_DEFAULTS(18, TEGRA186),
+	ADMAIF_REG_DEFAULTS(19, TEGRA186),
+	ADMAIF_REG_DEFAULTS(20, TEGRA186)
+};
+
+static const struct reg_default tegra210_admaif_reg_defaults[] = {
+	{(TEGRA_ADMAIF_GLOBAL_CG_0 + TEGRA210_ADMAIF_GLOBAL_BASE), 0x00000003},
+	ADMAIF_REG_DEFAULTS(1, TEGRA210),
+	ADMAIF_REG_DEFAULTS(2, TEGRA210),
+	ADMAIF_REG_DEFAULTS(3, TEGRA210),
+	ADMAIF_REG_DEFAULTS(4, TEGRA210),
+	ADMAIF_REG_DEFAULTS(5, TEGRA210),
+	ADMAIF_REG_DEFAULTS(6, TEGRA210),
+	ADMAIF_REG_DEFAULTS(7, TEGRA210),
+	ADMAIF_REG_DEFAULTS(8, TEGRA210),
+	ADMAIF_REG_DEFAULTS(9, TEGRA210),
+	ADMAIF_REG_DEFAULTS(10, TEGRA210)
+};
+
+static bool tegra_admaif_wr_reg(struct device *dev, unsigned int reg)
+{
+	struct tegra_admaif *admaif = dev_get_drvdata(dev);
+	unsigned int ch_stride = TEGRA_ADMAIF_CHANNEL_REG_STRIDE;
+	unsigned int num_ch = admaif->soc_data->num_ch;
+	unsigned int rx_base = admaif->soc_data->rx_base;
+	unsigned int tx_base = admaif->soc_data->tx_base;
+	unsigned int global_base = admaif->soc_data->global_base;
+	unsigned int reg_max = admaif->soc_data->regmap_conf->max_register;
+	unsigned int rx_max = rx_base + (num_ch * ch_stride);
+	unsigned int tx_max = tx_base + (num_ch * ch_stride);
+
+	if ((reg >= rx_base) && (reg < rx_max)) {
+		reg = (reg - rx_base) % ch_stride;
+		if ((reg == TEGRA_ADMAIF_RX_ENABLE) ||
+		    (reg == TEGRA_ADMAIF_RX_FIFO_CTRL) ||
+		    (reg == TEGRA_ADMAIF_RX_SOFT_RESET) ||
+		    (reg == TEGRA_ADMAIF_CH_ACIF_RX_CTRL))
+			return true;
+	} else if ((reg >= tx_base) && (reg < tx_max)) {
+		reg = (reg - tx_base) % ch_stride;
+		if ((reg == TEGRA_ADMAIF_TX_ENABLE) ||
+		    (reg == TEGRA_ADMAIF_TX_FIFO_CTRL) ||
+		    (reg == TEGRA_ADMAIF_TX_SOFT_RESET) ||
+		    (reg == TEGRA_ADMAIF_CH_ACIF_TX_CTRL))
+			return true;
+	} else if ((reg >= global_base) && (reg < reg_max)) {
+		if (reg == (global_base + TEGRA_ADMAIF_GLOBAL_ENABLE))
+			return true;
+	}
+
+	return false;
+}
+
+static bool tegra_admaif_rd_reg(struct device *dev, unsigned int reg)
+{
+	struct tegra_admaif *admaif = dev_get_drvdata(dev);
+	unsigned int ch_stride = TEGRA_ADMAIF_CHANNEL_REG_STRIDE;
+	unsigned int num_ch = admaif->soc_data->num_ch;
+	unsigned int rx_base = admaif->soc_data->rx_base;
+	unsigned int tx_base = admaif->soc_data->tx_base;
+	unsigned int global_base = admaif->soc_data->global_base;
+	unsigned int reg_max = admaif->soc_data->regmap_conf->max_register;
+	unsigned int rx_max = rx_base + (num_ch * ch_stride);
+	unsigned int tx_max = tx_base + (num_ch * ch_stride);
+
+	if ((reg >= rx_base) && (reg < rx_max)) {
+		reg = (reg - rx_base) % ch_stride;
+		if ((reg == TEGRA_ADMAIF_RX_ENABLE) ||
+		    (reg == TEGRA_ADMAIF_RX_STATUS) ||
+		    (reg == TEGRA_ADMAIF_RX_INT_STATUS) ||
+		    (reg == TEGRA_ADMAIF_RX_FIFO_CTRL) ||
+		    (reg == TEGRA_ADMAIF_RX_SOFT_RESET) ||
+		    (reg == TEGRA_ADMAIF_CH_ACIF_RX_CTRL))
+			return true;
+	} else if ((reg >= tx_base) && (reg < tx_max)) {
+		reg = (reg - tx_base) % ch_stride;
+		if ((reg == TEGRA_ADMAIF_TX_ENABLE) ||
+		    (reg == TEGRA_ADMAIF_TX_STATUS) ||
+		    (reg == TEGRA_ADMAIF_TX_INT_STATUS) ||
+		    (reg == TEGRA_ADMAIF_TX_FIFO_CTRL) ||
+		    (reg == TEGRA_ADMAIF_TX_SOFT_RESET) ||
+		    (reg == TEGRA_ADMAIF_CH_ACIF_TX_CTRL))
+			return true;
+	} else if ((reg >= global_base) && (reg < reg_max)) {
+		if ((reg == (global_base + TEGRA_ADMAIF_GLOBAL_ENABLE)) ||
+		    (reg == (global_base + TEGRA_ADMAIF_GLOBAL_CG_0)) ||
+		    (reg == (global_base + TEGRA_ADMAIF_GLOBAL_STATUS)) ||
+		    (reg == (global_base +
+				TEGRA_ADMAIF_GLOBAL_RX_ENABLE_STATUS)) ||
+		    (reg == (global_base +
+				TEGRA_ADMAIF_GLOBAL_TX_ENABLE_STATUS)))
+			return true;
+	}
+
+	return false;
+}
+
+static bool tegra_admaif_volatile_reg(struct device *dev, unsigned int reg)
+{
+	struct tegra_admaif *admaif = dev_get_drvdata(dev);
+	unsigned int ch_stride = TEGRA_ADMAIF_CHANNEL_REG_STRIDE;
+	unsigned int num_ch = admaif->soc_data->num_ch;
+	unsigned int rx_base = admaif->soc_data->rx_base;
+	unsigned int tx_base = admaif->soc_data->tx_base;
+	unsigned int global_base = admaif->soc_data->global_base;
+	unsigned int reg_max = admaif->soc_data->regmap_conf->max_register;
+	unsigned int rx_max = rx_base + (num_ch * ch_stride);
+	unsigned int tx_max = tx_base + (num_ch * ch_stride);
+
+	if ((reg >= rx_base) && (reg < rx_max)) {
+		reg = (reg - rx_base) % ch_stride;
+		if ((reg == TEGRA_ADMAIF_RX_ENABLE) ||
+		    (reg == TEGRA_ADMAIF_RX_STATUS) ||
+		    (reg == TEGRA_ADMAIF_RX_INT_STATUS) ||
+		    (reg == TEGRA_ADMAIF_RX_SOFT_RESET))
+			return true;
+	} else if ((reg >= tx_base) && (reg < tx_max)) {
+		reg = (reg - tx_base) % ch_stride;
+		if ((reg == TEGRA_ADMAIF_TX_ENABLE) ||
+		    (reg == TEGRA_ADMAIF_TX_STATUS) ||
+		    (reg == TEGRA_ADMAIF_TX_INT_STATUS) ||
+		    (reg == TEGRA_ADMAIF_TX_SOFT_RESET))
+			return true;
+	} else if ((reg >= global_base) && (reg < reg_max)) {
+		if ((reg == (global_base + TEGRA_ADMAIF_GLOBAL_STATUS)) ||
+		    (reg == (global_base +
+				TEGRA_ADMAIF_GLOBAL_RX_ENABLE_STATUS)) ||
+		    (reg == (global_base +
+				TEGRA_ADMAIF_GLOBAL_TX_ENABLE_STATUS)))
+			return true;
+	}
+
+	return false;
+}
+
+static const struct regmap_config tegra210_admaif_regmap_config = {
+	.reg_bits		= 32,
+	.reg_stride		= 4,
+	.val_bits		= 32,
+	.max_register		= TEGRA210_ADMAIF_LAST_REG,
+	.writeable_reg		= tegra_admaif_wr_reg,
+	.readable_reg		= tegra_admaif_rd_reg,
+	.volatile_reg		= tegra_admaif_volatile_reg,
+	.reg_defaults		= tegra210_admaif_reg_defaults,
+	.num_reg_defaults	= TEGRA210_ADMAIF_CHANNEL_COUNT * 6 + 1,
+	.cache_type		= REGCACHE_FLAT,
+};
+
+static const struct regmap_config tegra186_admaif_regmap_config = {
+	.reg_bits		= 32,
+	.reg_stride		= 4,
+	.val_bits		= 32,
+	.max_register		= TEGRA186_ADMAIF_LAST_REG,
+	.writeable_reg		= tegra_admaif_wr_reg,
+	.readable_reg		= tegra_admaif_rd_reg,
+	.volatile_reg		= tegra_admaif_volatile_reg,
+	.reg_defaults		= tegra186_admaif_reg_defaults,
+	.num_reg_defaults	= TEGRA186_ADMAIF_CHANNEL_COUNT * 6 + 1,
+	.cache_type		= REGCACHE_FLAT,
+};
+
+static int __maybe_unused tegra_admaif_runtime_suspend(struct device *dev)
+{
+	struct tegra_admaif *admaif = dev_get_drvdata(dev);
+
+	regcache_cache_only(admaif->regmap, true);
+	regcache_mark_dirty(admaif->regmap);
+
+	return 0;
+}
+
+static int __maybe_unused tegra_admaif_runtime_resume(struct device *dev)
+{
+	struct tegra_admaif *admaif = dev_get_drvdata(dev);
+
+	regcache_cache_only(admaif->regmap, false);
+	regcache_sync(admaif->regmap);
+
+	return 0;
+}
+
+static int tegra_admaif_set_pack_mode(struct regmap *map, unsigned int reg,
+				      int valid_bit)
+{
+	switch (valid_bit) {
+	case DATA_8BIT:
+		regmap_update_bits(map, reg, PACK8_EN_MASK, PACK8_EN);
+		regmap_update_bits(map, reg, PACK16_EN_MASK, 0);
+		break;
+	case DATA_16BIT:
+		regmap_update_bits(map, reg, PACK16_EN_MASK, PACK16_EN);
+		regmap_update_bits(map, reg, PACK8_EN_MASK, 0);
+		break;
+	case DATA_32BIT:
+		regmap_update_bits(map, reg, PACK16_EN_MASK, 0);
+		regmap_update_bits(map, reg, PACK8_EN_MASK, 0);
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+static int tegra_admaif_hw_params(struct snd_pcm_substream *substream,
+				  struct snd_pcm_hw_params *params,
+				  struct snd_soc_dai *dai)
+{
+	struct device *dev = dai->dev;
+	struct tegra_admaif *admaif = snd_soc_dai_get_drvdata(dai);
+	struct tegra_cif_conf cif_conf;
+	unsigned int reg, path;
+	int valid_bit, channels;
+
+	memset(&cif_conf, 0, sizeof(struct tegra_cif_conf));
+
+	switch (params_format(params)) {
+	case SNDRV_PCM_FORMAT_S8:
+		cif_conf.audio_bits = TEGRA_ACIF_BITS_8;
+		cif_conf.client_bits = TEGRA_ACIF_BITS_8;
+		valid_bit = DATA_8BIT;
+		break;
+	case SNDRV_PCM_FORMAT_S16_LE:
+		cif_conf.audio_bits = TEGRA_ACIF_BITS_16;
+		cif_conf.client_bits = TEGRA_ACIF_BITS_16;
+		valid_bit = DATA_16BIT;
+		break;
+	case SNDRV_PCM_FORMAT_S32_LE:
+		cif_conf.audio_bits = TEGRA_ACIF_BITS_32;
+		cif_conf.client_bits = TEGRA_ACIF_BITS_32;
+		valid_bit  = DATA_32BIT;
+		break;
+	default:
+		dev_err(dev, "unsupported format!\n");
+		return -EOPNOTSUPP;
+	}
+
+	channels = params_channels(params);
+	cif_conf.client_ch = channels;
+	cif_conf.audio_ch = channels;
+
+	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
+		path = ADMAIF_TX_PATH;
+		reg = CH_TX_REG(TEGRA_ADMAIF_CH_ACIF_TX_CTRL, dai->id);
+	} else {
+		path = ADMAIF_RX_PATH;
+		reg = CH_RX_REG(TEGRA_ADMAIF_CH_ACIF_RX_CTRL, dai->id);
+	}
+
+	cif_conf.mono_conv = admaif->mono_to_stereo[path][dai->id];
+	cif_conf.stereo_conv = admaif->stereo_to_mono[path][dai->id];
+
+	tegra_admaif_set_pack_mode(admaif->regmap, reg, valid_bit);
+
+	tegra_set_cif(admaif->regmap, reg, &cif_conf);
+
+	return 0;
+}
+
+static int tegra_admaif_start(struct snd_soc_dai *dai, int direction)
+{
+	struct tegra_admaif *admaif = snd_soc_dai_get_drvdata(dai);
+	unsigned int reg, mask, val;
+
+	switch (direction) {
+	case SNDRV_PCM_STREAM_PLAYBACK:
+		mask = TX_ENABLE_MASK;
+		val = TX_ENABLE;
+		reg = CH_TX_REG(TEGRA_ADMAIF_TX_ENABLE, dai->id);
+		break;
+	case SNDRV_PCM_STREAM_CAPTURE:
+		mask = RX_ENABLE_MASK;
+		val = RX_ENABLE;
+		reg = CH_RX_REG(TEGRA_ADMAIF_RX_ENABLE, dai->id);
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	regmap_update_bits(admaif->regmap, reg, mask, val);
+
+	return 0;
+}
+
+static int tegra_admaif_stop(struct snd_soc_dai *dai, int direction)
+{
+	struct tegra_admaif *admaif = snd_soc_dai_get_drvdata(dai);
+	unsigned int enable_reg, status_reg, reset_reg, mask, val;
+	char *dir_name;
+	int err, enable;
+
+	switch (direction) {
+	case SNDRV_PCM_STREAM_PLAYBACK:
+		mask = TX_ENABLE_MASK;
+		enable = TX_ENABLE;
+		dir_name = "TX";
+		enable_reg = CH_TX_REG(TEGRA_ADMAIF_TX_ENABLE, dai->id);
+		status_reg = CH_TX_REG(TEGRA_ADMAIF_TX_STATUS, dai->id);
+		reset_reg = CH_TX_REG(TEGRA_ADMAIF_TX_SOFT_RESET, dai->id);
+		break;
+	case SNDRV_PCM_STREAM_CAPTURE:
+		mask = RX_ENABLE_MASK;
+		enable = RX_ENABLE;
+		dir_name = "RX";
+		enable_reg = CH_RX_REG(TEGRA_ADMAIF_RX_ENABLE, dai->id);
+		status_reg = CH_RX_REG(TEGRA_ADMAIF_RX_STATUS, dai->id);
+		reset_reg = CH_RX_REG(TEGRA_ADMAIF_RX_SOFT_RESET, dai->id);
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	/* Disable TX/RX channel */
+	regmap_update_bits(admaif->regmap, enable_reg, mask, ~enable);
+
+	/* Wait until ADMAIF TX/RX status is disabled */
+	err = regmap_read_poll_timeout_atomic(admaif->regmap, status_reg, val,
+					      !(val & enable), 10, 10000);
+	if (err < 0)
+		dev_warn(dai->dev, "timeout: failed to disable ADMAIF%d_%s\n",
+			 dai->id + 1, dir_name);
+
+	/* SW reset */
+	regmap_update_bits(admaif->regmap, reset_reg, SW_RESET_MASK, SW_RESET);
+
+	/* Wait till SW reset is complete */
+	err = regmap_read_poll_timeout_atomic(admaif->regmap, reset_reg, val,
+					      !(val & SW_RESET_MASK & SW_RESET),
+					      10, 10000);
+	if (err) {
+		dev_err(dai->dev, "timeout: SW reset failed for ADMAIF%d_%s\n",
+			dai->id + 1, dir_name);
+		return err;
+	}
+
+	return 0;
+}
+
+static int tegra_admaif_trigger(struct snd_pcm_substream *substream, int cmd,
+				struct snd_soc_dai *dai)
+{
+	int err;
+
+	err = snd_dmaengine_pcm_trigger(substream, cmd);
+	if (err)
+		return err;
+
+	switch (cmd) {
+	case SNDRV_PCM_TRIGGER_START:
+	case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
+	case SNDRV_PCM_TRIGGER_RESUME:
+		return tegra_admaif_start(dai, substream->stream);
+	case SNDRV_PCM_TRIGGER_STOP:
+	case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
+	case SNDRV_PCM_TRIGGER_SUSPEND:
+		return tegra_admaif_stop(dai, substream->stream);
+	default:
+		return -EINVAL;
+	}
+}
+
+static const struct snd_soc_dai_ops tegra_admaif_dai_ops = {
+	.hw_params	= tegra_admaif_hw_params,
+	.trigger	= tegra_admaif_trigger,
+};
+
+static int tegra210_admaif_pget_mono_to_stereo(struct snd_kcontrol *kcontrol,
+	struct snd_ctl_elem_value *ucontrol)
+{
+	struct snd_soc_component *cmpnt = snd_soc_kcontrol_component(kcontrol);
+	struct tegra_admaif *admaif = snd_soc_component_get_drvdata(cmpnt);
+	struct soc_enum *ec = (struct soc_enum *)kcontrol->private_value;
+
+	ucontrol->value.enumerated.item[0] =
+		admaif->mono_to_stereo[ADMAIF_TX_PATH][ec->reg];
+
+	return 0;
+}
+
+static int tegra210_admaif_pput_mono_to_stereo(struct snd_kcontrol *kcontrol,
+	struct snd_ctl_elem_value *ucontrol)
+{
+	struct snd_soc_component *cmpnt = snd_soc_kcontrol_component(kcontrol);
+	struct tegra_admaif *admaif = snd_soc_component_get_drvdata(cmpnt);
+	struct soc_enum *ec = (struct soc_enum *)kcontrol->private_value;
+	unsigned int value = ucontrol->value.enumerated.item[0];
+
+	if (value == admaif->mono_to_stereo[ADMAIF_TX_PATH][ec->reg])
+		return 0;
+
+	admaif->mono_to_stereo[ADMAIF_TX_PATH][ec->reg] = value;
+
+	return 1;
+}
+
+static int tegra210_admaif_cget_mono_to_stereo(struct snd_kcontrol *kcontrol,
+	struct snd_ctl_elem_value *ucontrol)
+{
+	struct snd_soc_component *cmpnt = snd_soc_kcontrol_component(kcontrol);
+	struct tegra_admaif *admaif = snd_soc_component_get_drvdata(cmpnt);
+	struct soc_enum *ec = (struct soc_enum *)kcontrol->private_value;
+
+	ucontrol->value.enumerated.item[0] =
+		admaif->mono_to_stereo[ADMAIF_RX_PATH][ec->reg];
+
+	return 0;
+}
+
+static int tegra210_admaif_cput_mono_to_stereo(struct snd_kcontrol *kcontrol,
+	struct snd_ctl_elem_value *ucontrol)
+{
+	struct snd_soc_component *cmpnt = snd_soc_kcontrol_component(kcontrol);
+	struct tegra_admaif *admaif = snd_soc_component_get_drvdata(cmpnt);
+	struct soc_enum *ec = (struct soc_enum *)kcontrol->private_value;
+	unsigned int value = ucontrol->value.enumerated.item[0];
+
+	if (value == admaif->mono_to_stereo[ADMAIF_RX_PATH][ec->reg])
+		return 0;
+
+	admaif->mono_to_stereo[ADMAIF_RX_PATH][ec->reg] = value;
+
+	return 1;
+}
+
+static int tegra210_admaif_pget_stereo_to_mono(struct snd_kcontrol *kcontrol,
+	struct snd_ctl_elem_value *ucontrol)
+{
+	struct snd_soc_component *cmpnt = snd_soc_kcontrol_component(kcontrol);
+	struct tegra_admaif *admaif = snd_soc_component_get_drvdata(cmpnt);
+	struct soc_enum *ec = (struct soc_enum *)kcontrol->private_value;
+
+	ucontrol->value.enumerated.item[0] =
+		admaif->stereo_to_mono[ADMAIF_TX_PATH][ec->reg];
+
+	return 0;
+}
+
+static int tegra210_admaif_pput_stereo_to_mono(struct snd_kcontrol *kcontrol,
+	struct snd_ctl_elem_value *ucontrol)
+{
+	struct snd_soc_component *cmpnt = snd_soc_kcontrol_component(kcontrol);
+	struct tegra_admaif *admaif = snd_soc_component_get_drvdata(cmpnt);
+	struct soc_enum *ec = (struct soc_enum *)kcontrol->private_value;
+	unsigned int value = ucontrol->value.enumerated.item[0];
+
+	if (value == admaif->stereo_to_mono[ADMAIF_TX_PATH][ec->reg])
+		return 0;
+
+	admaif->stereo_to_mono[ADMAIF_TX_PATH][ec->reg] = value;
+
+	return 1;
+}
+
+static int tegra210_admaif_cget_stereo_to_mono(struct snd_kcontrol *kcontrol,
+	struct snd_ctl_elem_value *ucontrol)
+{
+	struct snd_soc_component *cmpnt = snd_soc_kcontrol_component(kcontrol);
+	struct tegra_admaif *admaif = snd_soc_component_get_drvdata(cmpnt);
+	struct soc_enum *ec = (struct soc_enum *)kcontrol->private_value;
+
+	ucontrol->value.enumerated.item[0] =
+		admaif->stereo_to_mono[ADMAIF_RX_PATH][ec->reg];
+
+	return 0;
+}
+
+static int tegra210_admaif_cput_stereo_to_mono(struct snd_kcontrol *kcontrol,
+	struct snd_ctl_elem_value *ucontrol)
+{
+	struct snd_soc_component *cmpnt = snd_soc_kcontrol_component(kcontrol);
+	struct tegra_admaif *admaif = snd_soc_component_get_drvdata(cmpnt);
+	struct soc_enum *ec = (struct soc_enum *)kcontrol->private_value;
+	unsigned int value = ucontrol->value.enumerated.item[0];
+
+	if (value == admaif->stereo_to_mono[ADMAIF_RX_PATH][ec->reg])
+		return 0;
+
+	admaif->stereo_to_mono[ADMAIF_RX_PATH][ec->reg] = value;
+
+	return 1;
+}
+
+static int tegra_admaif_dai_probe(struct snd_soc_dai *dai)
+{
+	struct tegra_admaif *admaif = snd_soc_dai_get_drvdata(dai);
+
+	dai->capture_dma_data = &admaif->capture_dma_data[dai->id];
+	dai->playback_dma_data = &admaif->playback_dma_data[dai->id];
+
+	return 0;
+}
+
+#define DAI(dai_name)					\
+	{							\
+		.name = dai_name,				\
+		.probe = tegra_admaif_dai_probe,		\
+		.playback = {					\
+			.stream_name = dai_name " Playback",	\
+			.channels_min = 1,			\
+			.channels_max = 16,			\
+			.rates = SNDRV_PCM_RATE_8000_192000,	\
+			.formats = SNDRV_PCM_FMTBIT_S8 |	\
+				SNDRV_PCM_FMTBIT_S16_LE |	\
+				SNDRV_PCM_FMTBIT_S32_LE,	\
+		},						\
+		.capture = {					\
+			.stream_name = dai_name " Capture",	\
+			.channels_min = 1,			\
+			.channels_max = 16,			\
+			.rates = SNDRV_PCM_RATE_8000_192000,	\
+			.formats = SNDRV_PCM_FMTBIT_S8 |	\
+				SNDRV_PCM_FMTBIT_S16_LE |	\
+				SNDRV_PCM_FMTBIT_S32_LE,	\
+		},						\
+		.ops = &tegra_admaif_dai_ops,			\
+	}
+
+static struct snd_soc_dai_driver tegra210_admaif_cmpnt_dais[] = {
+	DAI("ADMAIF1"),
+	DAI("ADMAIF2"),
+	DAI("ADMAIF3"),
+	DAI("ADMAIF4"),
+	DAI("ADMAIF5"),
+	DAI("ADMAIF6"),
+	DAI("ADMAIF7"),
+	DAI("ADMAIF8"),
+	DAI("ADMAIF9"),
+	DAI("ADMAIF10"),
+};
+
+static struct snd_soc_dai_driver tegra186_admaif_cmpnt_dais[] = {
+	DAI("ADMAIF1"),
+	DAI("ADMAIF2"),
+	DAI("ADMAIF3"),
+	DAI("ADMAIF4"),
+	DAI("ADMAIF5"),
+	DAI("ADMAIF6"),
+	DAI("ADMAIF7"),
+	DAI("ADMAIF8"),
+	DAI("ADMAIF9"),
+	DAI("ADMAIF10"),
+	DAI("ADMAIF11"),
+	DAI("ADMAIF12"),
+	DAI("ADMAIF13"),
+	DAI("ADMAIF14"),
+	DAI("ADMAIF15"),
+	DAI("ADMAIF16"),
+	DAI("ADMAIF17"),
+	DAI("ADMAIF18"),
+	DAI("ADMAIF19"),
+	DAI("ADMAIF20"),
+};
+
+static const char * const tegra_admaif_stereo_conv_text[] = {
+	"CH0", "CH1", "AVG",
+};
+
+static const char * const tegra_admaif_mono_conv_text[] = {
+	"Zero", "Copy",
+};
+
+/*
+ * Below macro is added to avoid looping over all ADMAIFx controls related
+ * to mono/stereo conversions in get()/put() callbacks.
+ */
+#define NV_SOC_ENUM_EXT(xname, xreg, xhandler_get, xhandler_put, xenum_text)   \
+{									       \
+	.iface = SNDRV_CTL_ELEM_IFACE_MIXER,				       \
+	.info = snd_soc_info_enum_double,				       \
+	.name = xname,							       \
+	.get = xhandler_get,						       \
+	.put = xhandler_put,						       \
+	.private_value = (unsigned long)&(struct soc_enum)		       \
+		SOC_ENUM_SINGLE(xreg, 0, ARRAY_SIZE(xenum_text), xenum_text)   \
+}
+
+#define TEGRA_ADMAIF_CIF_CTRL(reg)					       \
+	NV_SOC_ENUM_EXT("ADMAIF" #reg " Playback Mono To Stereo", reg - 1,     \
+			tegra210_admaif_pget_mono_to_stereo,		       \
+			tegra210_admaif_pput_mono_to_stereo,		       \
+			tegra_admaif_mono_conv_text),			       \
+	NV_SOC_ENUM_EXT("ADMAIF" #reg " Playback Stereo To Mono", reg - 1,     \
+			tegra210_admaif_pget_stereo_to_mono,		       \
+			tegra210_admaif_pput_stereo_to_mono,		       \
+			tegra_admaif_stereo_conv_text),			       \
+	NV_SOC_ENUM_EXT("ADMAIF" #reg " Capture Mono To Stereo", reg - 1,      \
+			tegra210_admaif_cget_mono_to_stereo,		       \
+			tegra210_admaif_cput_mono_to_stereo,		       \
+			tegra_admaif_mono_conv_text),			       \
+	NV_SOC_ENUM_EXT("ADMAIF" #reg " Capture Stereo To Mono", reg - 1,      \
+			tegra210_admaif_cget_stereo_to_mono,		       \
+			tegra210_admaif_cput_stereo_to_mono,		       \
+			tegra_admaif_stereo_conv_text)
+
+static struct snd_kcontrol_new tegra210_admaif_controls[] = {
+	TEGRA_ADMAIF_CIF_CTRL(1),
+	TEGRA_ADMAIF_CIF_CTRL(2),
+	TEGRA_ADMAIF_CIF_CTRL(3),
+	TEGRA_ADMAIF_CIF_CTRL(4),
+	TEGRA_ADMAIF_CIF_CTRL(5),
+	TEGRA_ADMAIF_CIF_CTRL(6),
+	TEGRA_ADMAIF_CIF_CTRL(7),
+	TEGRA_ADMAIF_CIF_CTRL(8),
+	TEGRA_ADMAIF_CIF_CTRL(9),
+	TEGRA_ADMAIF_CIF_CTRL(10),
+};
+
+static struct snd_kcontrol_new tegra186_admaif_controls[] = {
+	TEGRA_ADMAIF_CIF_CTRL(1),
+	TEGRA_ADMAIF_CIF_CTRL(2),
+	TEGRA_ADMAIF_CIF_CTRL(3),
+	TEGRA_ADMAIF_CIF_CTRL(4),
+	TEGRA_ADMAIF_CIF_CTRL(5),
+	TEGRA_ADMAIF_CIF_CTRL(6),
+	TEGRA_ADMAIF_CIF_CTRL(7),
+	TEGRA_ADMAIF_CIF_CTRL(8),
+	TEGRA_ADMAIF_CIF_CTRL(9),
+	TEGRA_ADMAIF_CIF_CTRL(10),
+	TEGRA_ADMAIF_CIF_CTRL(11),
+	TEGRA_ADMAIF_CIF_CTRL(12),
+	TEGRA_ADMAIF_CIF_CTRL(13),
+	TEGRA_ADMAIF_CIF_CTRL(14),
+	TEGRA_ADMAIF_CIF_CTRL(15),
+	TEGRA_ADMAIF_CIF_CTRL(16),
+	TEGRA_ADMAIF_CIF_CTRL(17),
+	TEGRA_ADMAIF_CIF_CTRL(18),
+	TEGRA_ADMAIF_CIF_CTRL(19),
+	TEGRA_ADMAIF_CIF_CTRL(20),
+};
+
+static const struct snd_soc_component_driver tegra210_admaif_cmpnt = {
+	.controls		= tegra210_admaif_controls,
+	.num_controls		= ARRAY_SIZE(tegra210_admaif_controls),
+	.pcm_construct		= tegra_pcm_construct,
+	.open			= tegra_pcm_open,
+	.close			= tegra_pcm_close,
+	.hw_params		= tegra_pcm_hw_params,
+	.pointer		= tegra_pcm_pointer,
+};
+
+static const struct snd_soc_component_driver tegra186_admaif_cmpnt = {
+	.controls		= tegra186_admaif_controls,
+	.num_controls		= ARRAY_SIZE(tegra186_admaif_controls),
+	.pcm_construct		= tegra_pcm_construct,
+	.open			= tegra_pcm_open,
+	.close			= tegra_pcm_close,
+	.hw_params		= tegra_pcm_hw_params,
+	.pointer		= tegra_pcm_pointer,
+};
+
+static const struct tegra_admaif_soc_data soc_data_tegra210 = {
+	.num_ch		= TEGRA210_ADMAIF_CHANNEL_COUNT,
+	.cmpnt		= &tegra210_admaif_cmpnt,
+	.dais		= tegra210_admaif_cmpnt_dais,
+	.regmap_conf	= &tegra210_admaif_regmap_config,
+	.global_base	= TEGRA210_ADMAIF_GLOBAL_BASE,
+	.tx_base	= TEGRA210_ADMAIF_TX_BASE,
+	.rx_base	= TEGRA210_ADMAIF_RX_BASE,
+};
+
+static const struct tegra_admaif_soc_data soc_data_tegra186 = {
+	.num_ch		= TEGRA186_ADMAIF_CHANNEL_COUNT,
+	.cmpnt		= &tegra186_admaif_cmpnt,
+	.dais		= tegra186_admaif_cmpnt_dais,
+	.regmap_conf	= &tegra186_admaif_regmap_config,
+	.global_base	= TEGRA186_ADMAIF_GLOBAL_BASE,
+	.tx_base	= TEGRA186_ADMAIF_TX_BASE,
+	.rx_base	= TEGRA186_ADMAIF_RX_BASE,
+};
+
+static const struct of_device_id tegra_admaif_of_match[] = {
+	{ .compatible = "nvidia,tegra210-admaif", .data = &soc_data_tegra210 },
+	{ .compatible = "nvidia,tegra186-admaif", .data = &soc_data_tegra186 },
+	{},
+};
+MODULE_DEVICE_TABLE(of, tegra_admaif_of_match);
+
+static int tegra_admaif_probe(struct platform_device *pdev)
+{
+	struct tegra_admaif *admaif;
+	void __iomem *regs;
+	struct resource *res;
+	int err, i;
+
+	admaif = devm_kzalloc(&pdev->dev, sizeof(*admaif), GFP_KERNEL);
+	if (!admaif)
+		return -ENOMEM;
+
+	admaif->soc_data = of_device_get_match_data(&pdev->dev);
+
+	dev_set_drvdata(&pdev->dev, admaif);
+
+	admaif->capture_dma_data =
+		devm_kcalloc(&pdev->dev,
+			     admaif->soc_data->num_ch,
+			     sizeof(struct snd_dmaengine_dai_dma_data),
+			     GFP_KERNEL);
+	if (!admaif->capture_dma_data)
+		return -ENOMEM;
+
+	admaif->playback_dma_data =
+		devm_kcalloc(&pdev->dev,
+			     admaif->soc_data->num_ch,
+			     sizeof(struct snd_dmaengine_dai_dma_data),
+			     GFP_KERNEL);
+	if (!admaif->playback_dma_data)
+		return -ENOMEM;
+
+	for (i = 0; i < ADMAIF_PATHS; i++) {
+		admaif->mono_to_stereo[i] =
+			devm_kcalloc(&pdev->dev, admaif->soc_data->num_ch,
+				     sizeof(unsigned int), GFP_KERNEL);
+		if (!admaif->mono_to_stereo[i])
+			return -ENOMEM;
+
+		admaif->stereo_to_mono[i] =
+			devm_kcalloc(&pdev->dev, admaif->soc_data->num_ch,
+				     sizeof(unsigned int), GFP_KERNEL);
+		if (!admaif->stereo_to_mono[i])
+			return -ENOMEM;
+	}
+
+	regs = devm_platform_get_and_ioremap_resource(pdev, 0, &res);
+	if (IS_ERR(regs))
+		return PTR_ERR(regs);
+
+	admaif->regmap = devm_regmap_init_mmio(&pdev->dev, regs,
+					       admaif->soc_data->regmap_conf);
+	if (IS_ERR(admaif->regmap)) {
+		dev_err(&pdev->dev, "regmap init failed\n");
+		return PTR_ERR(admaif->regmap);
+	}
+
+	regcache_cache_only(admaif->regmap, true);
+
+	regmap_update_bits(admaif->regmap, admaif->soc_data->global_base +
+			   TEGRA_ADMAIF_GLOBAL_ENABLE, 1, 1);
+
+	for (i = 0; i < admaif->soc_data->num_ch; i++) {
+		admaif->playback_dma_data[i].addr = res->start +
+			CH_TX_REG(TEGRA_ADMAIF_TX_FIFO_WRITE, i);
+
+		admaif->capture_dma_data[i].addr = res->start +
+			CH_RX_REG(TEGRA_ADMAIF_RX_FIFO_READ, i);
+
+		admaif->playback_dma_data[i].addr_width = 32;
+
+		if (of_property_read_string_index(pdev->dev.of_node,
+				"dma-names", (i * 2) + 1,
+				&admaif->playback_dma_data[i].chan_name) < 0) {
+			dev_err(&pdev->dev,
+				"missing property nvidia,dma-names\n");
+
+			return -ENODEV;
+		}
+
+		admaif->capture_dma_data[i].addr_width = 32;
+
+		if (of_property_read_string_index(pdev->dev.of_node,
+				"dma-names",
+				(i * 2),
+				&admaif->capture_dma_data[i].chan_name) < 0) {
+			dev_err(&pdev->dev,
+				"missing property nvidia,dma-names\n");
+
+			return -ENODEV;
+		}
+	}
+
+	err = devm_snd_soc_register_component(&pdev->dev,
+					      admaif->soc_data->cmpnt,
+					      admaif->soc_data->dais,
+					      admaif->soc_data->num_ch);
+	if (err) {
+		dev_err(&pdev->dev,
+			"can't register ADMAIF component, err: %d\n", err);
+		return err;
+	}
+
+	pm_runtime_enable(&pdev->dev);
+
+	return 0;
+}
+
+static int tegra_admaif_remove(struct platform_device *pdev)
+{
+	pm_runtime_disable(&pdev->dev);
+
+	return 0;
+}
+
+static const struct dev_pm_ops tegra_admaif_pm_ops = {
+	SET_RUNTIME_PM_OPS(tegra_admaif_runtime_suspend,
+			   tegra_admaif_runtime_resume, NULL)
+	SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend,
+				pm_runtime_force_resume)
+};
+
+static struct platform_driver tegra_admaif_driver = {
+	.probe = tegra_admaif_probe,
+	.remove = tegra_admaif_remove,
+	.driver = {
+		.name = "tegra210-admaif",
+		.of_match_table = tegra_admaif_of_match,
+		.pm = &tegra_admaif_pm_ops,
+	},
+};
+module_platform_driver(tegra_admaif_driver);
+
+MODULE_AUTHOR("Songhee Baek <sbaek@nvidia.com>");
+MODULE_DESCRIPTION("Tegra210 ASoC ADMAIF driver");
+MODULE_LICENSE("GPL v2");