Adding upstream version 6.1.76.upstream/6.1.76

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 607 insertions, 0 deletions

diff --git a/sound/soc/tegra/tegra210_amx.c b/sound/soc/tegra/tegra210_amx.c
new file mode 100644
index 000000000..a71c5916d
--- /dev/null
+++ b/sound/soc/tegra/tegra210_amx.c
@@ -0,0 +1,607 @@
+// SPDX-License-Identifier: GPL-2.0-only
+//
+// tegra210_amx.c - Tegra210 AMX driver
+//
+// Copyright (c) 2021-2023 NVIDIA CORPORATION.  All rights reserved.
+
+#include <linux/clk.h>
+#include <linux/device.h>
+#include <linux/io.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/of_device.h>
+#include <linux/platform_device.h>
+#include <linux/pm_runtime.h>
+#include <linux/regmap.h>
+#include <sound/core.h>
+#include <sound/pcm.h>
+#include <sound/pcm_params.h>
+#include <sound/soc.h>
+
+#include "tegra210_amx.h"
+#include "tegra_cif.h"
+
+/*
+ * The counter is in terms of AHUB clock cycles. If a frame is not
+ * received within these clock cycles, the AMX input channel gets
+ * automatically disabled. For now the counter is calculated as a
+ * function of sample rate (8 kHz) and AHUB clock (49.152 MHz).
+ * If later an accurate number is needed, the counter needs to be
+ * calculated at runtime.
+ *
+ *     count = ahub_clk / sample_rate
+ */
+#define TEGRA194_MAX_FRAME_IDLE_COUNT	0x1800
+
+#define AMX_CH_REG(id, reg) ((reg) + ((id) * TEGRA210_AMX_AUDIOCIF_CH_STRIDE))
+
+static const struct reg_default tegra210_amx_reg_defaults[] = {
+	{ TEGRA210_AMX_RX_INT_MASK, 0x0000000f},
+	{ TEGRA210_AMX_RX1_CIF_CTRL, 0x00007000},
+	{ TEGRA210_AMX_RX2_CIF_CTRL, 0x00007000},
+	{ TEGRA210_AMX_RX3_CIF_CTRL, 0x00007000},
+	{ TEGRA210_AMX_RX4_CIF_CTRL, 0x00007000},
+	{ TEGRA210_AMX_TX_INT_MASK, 0x00000001},
+	{ TEGRA210_AMX_TX_CIF_CTRL, 0x00007000},
+	{ TEGRA210_AMX_CG, 0x1},
+	{ TEGRA210_AMX_CFG_RAM_CTRL, 0x00004000},
+};
+
+static void tegra210_amx_write_map_ram(struct tegra210_amx *amx)
+{
+	int i;
+
+	regmap_write(amx->regmap, TEGRA210_AMX_CFG_RAM_CTRL,
+		     TEGRA210_AMX_CFG_RAM_CTRL_SEQ_ACCESS_EN |
+		     TEGRA210_AMX_CFG_RAM_CTRL_ADDR_INIT_EN |
+		     TEGRA210_AMX_CFG_RAM_CTRL_RW_WRITE);
+
+	for (i = 0; i < TEGRA210_AMX_RAM_DEPTH; i++)
+		regmap_write(amx->regmap, TEGRA210_AMX_CFG_RAM_DATA,
+			     amx->map[i]);
+
+	regmap_write(amx->regmap, TEGRA210_AMX_OUT_BYTE_EN0, amx->byte_mask[0]);
+	regmap_write(amx->regmap, TEGRA210_AMX_OUT_BYTE_EN1, amx->byte_mask[1]);
+}
+
+static int tegra210_amx_startup(struct snd_pcm_substream *substream,
+				struct snd_soc_dai *dai)
+{
+	struct tegra210_amx *amx = snd_soc_dai_get_drvdata(dai);
+	unsigned int val;
+	int err;
+
+	/* Ensure if AMX is disabled */
+	err = regmap_read_poll_timeout(amx->regmap, TEGRA210_AMX_STATUS, val,
+				       !(val & 0x1), 10, 10000);
+	if (err < 0) {
+		dev_err(dai->dev, "failed to stop AMX, err = %d\n", err);
+		return err;
+	}
+
+	/*
+	 * Soft Reset: Below performs module soft reset which clears
+	 * all FSM logic, flushes flow control of FIFO and resets the
+	 * state register. It also brings module back to disabled
+	 * state (without flushing the data in the pipe).
+	 */
+	regmap_update_bits(amx->regmap, TEGRA210_AMX_SOFT_RESET,
+			   TEGRA210_AMX_SOFT_RESET_SOFT_RESET_MASK,
+			   TEGRA210_AMX_SOFT_RESET_SOFT_EN);
+
+	err = regmap_read_poll_timeout(amx->regmap, TEGRA210_AMX_SOFT_RESET,
+				       val, !(val & 0x1), 10, 10000);
+	if (err < 0) {
+		dev_err(dai->dev, "failed to reset AMX, err = %d\n", err);
+		return err;
+	}
+
+	return 0;
+}
+
+static int __maybe_unused tegra210_amx_runtime_suspend(struct device *dev)
+{
+	struct tegra210_amx *amx = dev_get_drvdata(dev);
+
+	regcache_cache_only(amx->regmap, true);
+	regcache_mark_dirty(amx->regmap);
+
+	return 0;
+}
+
+static int __maybe_unused tegra210_amx_runtime_resume(struct device *dev)
+{
+	struct tegra210_amx *amx = dev_get_drvdata(dev);
+
+	regcache_cache_only(amx->regmap, false);
+	regcache_sync(amx->regmap);
+
+	regmap_update_bits(amx->regmap,
+		TEGRA210_AMX_CTRL,
+		TEGRA210_AMX_CTRL_RX_DEP_MASK,
+		TEGRA210_AMX_WAIT_ON_ANY << TEGRA210_AMX_CTRL_RX_DEP_SHIFT);
+
+	tegra210_amx_write_map_ram(amx);
+
+	return 0;
+}
+
+static int tegra210_amx_set_audio_cif(struct snd_soc_dai *dai,
+				      struct snd_pcm_hw_params *params,
+				      unsigned int reg)
+{
+	struct tegra210_amx *amx = snd_soc_dai_get_drvdata(dai);
+	int channels, audio_bits;
+	struct tegra_cif_conf cif_conf;
+
+	memset(&cif_conf, 0, sizeof(struct tegra_cif_conf));
+
+	channels = params_channels(params);
+
+	switch (params_format(params)) {
+	case SNDRV_PCM_FORMAT_S8:
+		audio_bits = TEGRA_ACIF_BITS_8;
+		break;
+	case SNDRV_PCM_FORMAT_S16_LE:
+		audio_bits = TEGRA_ACIF_BITS_16;
+		break;
+	case SNDRV_PCM_FORMAT_S32_LE:
+		audio_bits = TEGRA_ACIF_BITS_32;
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	cif_conf.audio_ch = channels;
+	cif_conf.client_ch = channels;
+	cif_conf.audio_bits = audio_bits;
+	cif_conf.client_bits = audio_bits;
+
+	tegra_set_cif(amx->regmap, reg, &cif_conf);
+
+	return 0;
+}
+
+static int tegra210_amx_in_hw_params(struct snd_pcm_substream *substream,
+				     struct snd_pcm_hw_params *params,
+				     struct snd_soc_dai *dai)
+{
+	struct tegra210_amx *amx = snd_soc_dai_get_drvdata(dai);
+
+	if (amx->soc_data->auto_disable) {
+		regmap_write(amx->regmap,
+			     AMX_CH_REG(dai->id, TEGRA194_AMX_RX1_FRAME_PERIOD),
+			     TEGRA194_MAX_FRAME_IDLE_COUNT);
+		regmap_write(amx->regmap, TEGRA210_AMX_CYA, 1);
+	}
+
+	return tegra210_amx_set_audio_cif(dai, params,
+			AMX_CH_REG(dai->id, TEGRA210_AMX_RX1_CIF_CTRL));
+}
+
+static int tegra210_amx_out_hw_params(struct snd_pcm_substream *substream,
+				      struct snd_pcm_hw_params *params,
+				      struct snd_soc_dai *dai)
+{
+	return tegra210_amx_set_audio_cif(dai, params,
+					  TEGRA210_AMX_TX_CIF_CTRL);
+}
+
+static int tegra210_amx_get_byte_map(struct snd_kcontrol *kcontrol,
+				     struct snd_ctl_elem_value *ucontrol)
+{
+	struct snd_soc_component *cmpnt = snd_soc_kcontrol_component(kcontrol);
+	struct soc_mixer_control *mc =
+		(struct soc_mixer_control *)kcontrol->private_value;
+	struct tegra210_amx *amx = snd_soc_component_get_drvdata(cmpnt);
+	unsigned char *bytes_map = (unsigned char *)&amx->map;
+	int reg = mc->reg;
+	int enabled;
+
+	if (reg > 31)
+		enabled = amx->byte_mask[1] & (1 << (reg - 32));
+	else
+		enabled = amx->byte_mask[0] & (1 << reg);
+
+	/*
+	 * TODO: Simplify this logic to just return from bytes_map[]
+	 *
+	 * Presently below is required since bytes_map[] is
+	 * tightly packed and cannot store the control value of 256.
+	 * Byte mask state is used to know if 256 needs to be returned.
+	 * Note that for control value of 256, the put() call stores 0
+	 * in the bytes_map[] and disables the corresponding bit in
+	 * byte_mask[].
+	 */
+	if (enabled)
+		ucontrol->value.integer.value[0] = bytes_map[reg];
+	else
+		ucontrol->value.integer.value[0] = 256;
+
+	return 0;
+}
+
+static int tegra210_amx_put_byte_map(struct snd_kcontrol *kcontrol,
+				     struct snd_ctl_elem_value *ucontrol)
+{
+	struct soc_mixer_control *mc =
+		(struct soc_mixer_control *)kcontrol->private_value;
+	struct snd_soc_component *cmpnt = snd_soc_kcontrol_component(kcontrol);
+	struct tegra210_amx *amx = snd_soc_component_get_drvdata(cmpnt);
+	unsigned char *bytes_map = (unsigned char *)&amx->map;
+	int reg = mc->reg;
+	int value = ucontrol->value.integer.value[0];
+	unsigned int mask_val = amx->byte_mask[reg / 32];
+
+	if (value >= 0 && value <= 255)
+		mask_val |= (1 << (reg % 32));
+	else
+		mask_val &= ~(1 << (reg % 32));
+
+	if (mask_val == amx->byte_mask[reg / 32])
+		return 0;
+
+	/* Update byte map and slot */
+	bytes_map[reg] = value % 256;
+	amx->byte_mask[reg / 32] = mask_val;
+
+	return 1;
+}
+
+static const struct snd_soc_dai_ops tegra210_amx_out_dai_ops = {
+	.hw_params	= tegra210_amx_out_hw_params,
+	.startup	= tegra210_amx_startup,
+};
+
+static const struct snd_soc_dai_ops tegra210_amx_in_dai_ops = {
+	.hw_params	= tegra210_amx_in_hw_params,
+};
+
+#define IN_DAI(id)						\
+	{							\
+		.name = "AMX-RX-CIF" #id,			\
+		.playback = {					\
+			.stream_name = "RX" #id "-CIF-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 = "RX" #id "-CIF-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 = &tegra210_amx_in_dai_ops,		\
+	}
+
+#define OUT_DAI							\
+	{							\
+		.name = "AMX-TX-CIF",				\
+		.playback = {					\
+			.stream_name = "TX-CIF-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 = "TX-CIF-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 = &tegra210_amx_out_dai_ops,		\
+	}
+
+static struct snd_soc_dai_driver tegra210_amx_dais[] = {
+	IN_DAI(1),
+	IN_DAI(2),
+	IN_DAI(3),
+	IN_DAI(4),
+	OUT_DAI,
+};
+
+static const struct snd_soc_dapm_widget tegra210_amx_widgets[] = {
+	SND_SOC_DAPM_AIF_IN("RX1", NULL, 0, TEGRA210_AMX_CTRL, 0, 0),
+	SND_SOC_DAPM_AIF_IN("RX2", NULL, 0, TEGRA210_AMX_CTRL, 1, 0),
+	SND_SOC_DAPM_AIF_IN("RX3", NULL, 0, TEGRA210_AMX_CTRL, 2, 0),
+	SND_SOC_DAPM_AIF_IN("RX4", NULL, 0, TEGRA210_AMX_CTRL, 3, 0),
+	SND_SOC_DAPM_AIF_OUT("TX", NULL, 0, TEGRA210_AMX_ENABLE,
+			     TEGRA210_AMX_ENABLE_SHIFT, 0),
+};
+
+#define STREAM_ROUTES(id, sname)					  \
+	{ "RX" #id " XBAR-" sname,	NULL,	"RX" #id " XBAR-TX" },	  \
+	{ "RX" #id "-CIF-" sname,	NULL,	"RX" #id " XBAR-" sname },\
+	{ "RX" #id,			NULL,	"RX" #id "-CIF-" sname }, \
+	{ "TX",				NULL,	"RX" #id },		  \
+	{ "TX-CIF-" sname,		NULL,	"TX" },			  \
+	{ "XBAR-" sname,		NULL,	"TX-CIF-" sname },	  \
+	{ "XBAR-RX",			NULL,	"XBAR-" sname }
+
+#define AMX_ROUTES(id)			\
+	STREAM_ROUTES(id, "Playback"),	\
+	STREAM_ROUTES(id, "Capture")
+
+static const struct snd_soc_dapm_route tegra210_amx_routes[] = {
+	AMX_ROUTES(1),
+	AMX_ROUTES(2),
+	AMX_ROUTES(3),
+	AMX_ROUTES(4),
+};
+
+#define TEGRA210_AMX_BYTE_MAP_CTRL(reg)					\
+	SOC_SINGLE_EXT("Byte Map " #reg, reg, 0, 256, 0,		\
+		       tegra210_amx_get_byte_map,			\
+		       tegra210_amx_put_byte_map)
+
+static struct snd_kcontrol_new tegra210_amx_controls[] = {
+	TEGRA210_AMX_BYTE_MAP_CTRL(0),
+	TEGRA210_AMX_BYTE_MAP_CTRL(1),
+	TEGRA210_AMX_BYTE_MAP_CTRL(2),
+	TEGRA210_AMX_BYTE_MAP_CTRL(3),
+	TEGRA210_AMX_BYTE_MAP_CTRL(4),
+	TEGRA210_AMX_BYTE_MAP_CTRL(5),
+	TEGRA210_AMX_BYTE_MAP_CTRL(6),
+	TEGRA210_AMX_BYTE_MAP_CTRL(7),
+	TEGRA210_AMX_BYTE_MAP_CTRL(8),
+	TEGRA210_AMX_BYTE_MAP_CTRL(9),
+	TEGRA210_AMX_BYTE_MAP_CTRL(10),
+	TEGRA210_AMX_BYTE_MAP_CTRL(11),
+	TEGRA210_AMX_BYTE_MAP_CTRL(12),
+	TEGRA210_AMX_BYTE_MAP_CTRL(13),
+	TEGRA210_AMX_BYTE_MAP_CTRL(14),
+	TEGRA210_AMX_BYTE_MAP_CTRL(15),
+	TEGRA210_AMX_BYTE_MAP_CTRL(16),
+	TEGRA210_AMX_BYTE_MAP_CTRL(17),
+	TEGRA210_AMX_BYTE_MAP_CTRL(18),
+	TEGRA210_AMX_BYTE_MAP_CTRL(19),
+	TEGRA210_AMX_BYTE_MAP_CTRL(20),
+	TEGRA210_AMX_BYTE_MAP_CTRL(21),
+	TEGRA210_AMX_BYTE_MAP_CTRL(22),
+	TEGRA210_AMX_BYTE_MAP_CTRL(23),
+	TEGRA210_AMX_BYTE_MAP_CTRL(24),
+	TEGRA210_AMX_BYTE_MAP_CTRL(25),
+	TEGRA210_AMX_BYTE_MAP_CTRL(26),
+	TEGRA210_AMX_BYTE_MAP_CTRL(27),
+	TEGRA210_AMX_BYTE_MAP_CTRL(28),
+	TEGRA210_AMX_BYTE_MAP_CTRL(29),
+	TEGRA210_AMX_BYTE_MAP_CTRL(30),
+	TEGRA210_AMX_BYTE_MAP_CTRL(31),
+	TEGRA210_AMX_BYTE_MAP_CTRL(32),
+	TEGRA210_AMX_BYTE_MAP_CTRL(33),
+	TEGRA210_AMX_BYTE_MAP_CTRL(34),
+	TEGRA210_AMX_BYTE_MAP_CTRL(35),
+	TEGRA210_AMX_BYTE_MAP_CTRL(36),
+	TEGRA210_AMX_BYTE_MAP_CTRL(37),
+	TEGRA210_AMX_BYTE_MAP_CTRL(38),
+	TEGRA210_AMX_BYTE_MAP_CTRL(39),
+	TEGRA210_AMX_BYTE_MAP_CTRL(40),
+	TEGRA210_AMX_BYTE_MAP_CTRL(41),
+	TEGRA210_AMX_BYTE_MAP_CTRL(42),
+	TEGRA210_AMX_BYTE_MAP_CTRL(43),
+	TEGRA210_AMX_BYTE_MAP_CTRL(44),
+	TEGRA210_AMX_BYTE_MAP_CTRL(45),
+	TEGRA210_AMX_BYTE_MAP_CTRL(46),
+	TEGRA210_AMX_BYTE_MAP_CTRL(47),
+	TEGRA210_AMX_BYTE_MAP_CTRL(48),
+	TEGRA210_AMX_BYTE_MAP_CTRL(49),
+	TEGRA210_AMX_BYTE_MAP_CTRL(50),
+	TEGRA210_AMX_BYTE_MAP_CTRL(51),
+	TEGRA210_AMX_BYTE_MAP_CTRL(52),
+	TEGRA210_AMX_BYTE_MAP_CTRL(53),
+	TEGRA210_AMX_BYTE_MAP_CTRL(54),
+	TEGRA210_AMX_BYTE_MAP_CTRL(55),
+	TEGRA210_AMX_BYTE_MAP_CTRL(56),
+	TEGRA210_AMX_BYTE_MAP_CTRL(57),
+	TEGRA210_AMX_BYTE_MAP_CTRL(58),
+	TEGRA210_AMX_BYTE_MAP_CTRL(59),
+	TEGRA210_AMX_BYTE_MAP_CTRL(60),
+	TEGRA210_AMX_BYTE_MAP_CTRL(61),
+	TEGRA210_AMX_BYTE_MAP_CTRL(62),
+	TEGRA210_AMX_BYTE_MAP_CTRL(63),
+};
+
+static const struct snd_soc_component_driver tegra210_amx_cmpnt = {
+	.dapm_widgets		= tegra210_amx_widgets,
+	.num_dapm_widgets	= ARRAY_SIZE(tegra210_amx_widgets),
+	.dapm_routes		= tegra210_amx_routes,
+	.num_dapm_routes	= ARRAY_SIZE(tegra210_amx_routes),
+	.controls		= tegra210_amx_controls,
+	.num_controls		= ARRAY_SIZE(tegra210_amx_controls),
+};
+
+static bool tegra210_amx_wr_reg(struct device *dev, unsigned int reg)
+{
+	switch (reg) {
+	case TEGRA210_AMX_RX_INT_MASK ... TEGRA210_AMX_RX4_CIF_CTRL:
+	case TEGRA210_AMX_TX_INT_MASK ... TEGRA210_AMX_CG:
+	case TEGRA210_AMX_CTRL ... TEGRA210_AMX_CYA:
+	case TEGRA210_AMX_CFG_RAM_CTRL ... TEGRA210_AMX_CFG_RAM_DATA:
+		return true;
+	default:
+		return false;
+	}
+}
+
+static bool tegra194_amx_wr_reg(struct device *dev, unsigned int reg)
+{
+	switch (reg) {
+	case TEGRA194_AMX_RX1_FRAME_PERIOD ... TEGRA194_AMX_RX4_FRAME_PERIOD:
+		return true;
+	default:
+		return tegra210_amx_wr_reg(dev, reg);
+	}
+}
+
+static bool tegra210_amx_rd_reg(struct device *dev, unsigned int reg)
+{
+	switch (reg) {
+	case TEGRA210_AMX_RX_STATUS ... TEGRA210_AMX_CFG_RAM_DATA:
+		return true;
+	default:
+		return false;
+	}
+}
+
+static bool tegra194_amx_rd_reg(struct device *dev, unsigned int reg)
+{
+	switch (reg) {
+	case TEGRA194_AMX_RX1_FRAME_PERIOD ... TEGRA194_AMX_RX4_FRAME_PERIOD:
+		return true;
+	default:
+		return tegra210_amx_rd_reg(dev, reg);
+	}
+}
+
+static bool tegra210_amx_volatile_reg(struct device *dev, unsigned int reg)
+{
+	switch (reg) {
+	case TEGRA210_AMX_RX_STATUS:
+	case TEGRA210_AMX_RX_INT_STATUS:
+	case TEGRA210_AMX_RX_INT_SET:
+	case TEGRA210_AMX_TX_STATUS:
+	case TEGRA210_AMX_TX_INT_STATUS:
+	case TEGRA210_AMX_TX_INT_SET:
+	case TEGRA210_AMX_SOFT_RESET:
+	case TEGRA210_AMX_STATUS:
+	case TEGRA210_AMX_INT_STATUS:
+	case TEGRA210_AMX_CFG_RAM_CTRL:
+	case TEGRA210_AMX_CFG_RAM_DATA:
+		return true;
+	default:
+		break;
+	}
+
+	return false;
+}
+
+static const struct regmap_config tegra210_amx_regmap_config = {
+	.reg_bits		= 32,
+	.reg_stride		= 4,
+	.val_bits		= 32,
+	.max_register		= TEGRA210_AMX_CFG_RAM_DATA,
+	.writeable_reg		= tegra210_amx_wr_reg,
+	.readable_reg		= tegra210_amx_rd_reg,
+	.volatile_reg		= tegra210_amx_volatile_reg,
+	.reg_defaults		= tegra210_amx_reg_defaults,
+	.num_reg_defaults	= ARRAY_SIZE(tegra210_amx_reg_defaults),
+	.cache_type		= REGCACHE_FLAT,
+};
+
+static const struct regmap_config tegra194_amx_regmap_config = {
+	.reg_bits		= 32,
+	.reg_stride		= 4,
+	.val_bits		= 32,
+	.max_register		= TEGRA194_AMX_RX4_LAST_FRAME_PERIOD,
+	.writeable_reg		= tegra194_amx_wr_reg,
+	.readable_reg		= tegra194_amx_rd_reg,
+	.volatile_reg		= tegra210_amx_volatile_reg,
+	.reg_defaults		= tegra210_amx_reg_defaults,
+	.num_reg_defaults	= ARRAY_SIZE(tegra210_amx_reg_defaults),
+	.cache_type		= REGCACHE_FLAT,
+};
+
+static const struct tegra210_amx_soc_data soc_data_tegra210 = {
+	.regmap_conf	= &tegra210_amx_regmap_config,
+};
+
+static const struct tegra210_amx_soc_data soc_data_tegra194 = {
+	.regmap_conf	= &tegra194_amx_regmap_config,
+	.auto_disable	= true,
+};
+
+static const struct of_device_id tegra210_amx_of_match[] = {
+	{ .compatible = "nvidia,tegra210-amx", .data = &soc_data_tegra210 },
+	{ .compatible = "nvidia,tegra194-amx", .data = &soc_data_tegra194 },
+	{},
+};
+MODULE_DEVICE_TABLE(of, tegra210_amx_of_match);
+
+static int tegra210_amx_platform_probe(struct platform_device *pdev)
+{
+	struct device *dev = &pdev->dev;
+	struct tegra210_amx *amx;
+	void __iomem *regs;
+	int err;
+	const struct of_device_id *match;
+	struct tegra210_amx_soc_data *soc_data;
+
+	match = of_match_device(tegra210_amx_of_match, dev);
+
+	soc_data = (struct tegra210_amx_soc_data *)match->data;
+
+	amx = devm_kzalloc(dev, sizeof(*amx), GFP_KERNEL);
+	if (!amx)
+		return -ENOMEM;
+
+	amx->soc_data = soc_data;
+
+	dev_set_drvdata(dev, amx);
+
+	regs = devm_platform_ioremap_resource(pdev, 0);
+	if (IS_ERR(regs))
+		return PTR_ERR(regs);
+
+	amx->regmap = devm_regmap_init_mmio(dev, regs,
+					    soc_data->regmap_conf);
+	if (IS_ERR(amx->regmap)) {
+		dev_err(dev, "regmap init failed\n");
+		return PTR_ERR(amx->regmap);
+	}
+
+	regcache_cache_only(amx->regmap, true);
+
+	err = devm_snd_soc_register_component(dev, &tegra210_amx_cmpnt,
+					      tegra210_amx_dais,
+					      ARRAY_SIZE(tegra210_amx_dais));
+	if (err) {
+		dev_err(dev, "can't register AMX component, err: %d\n", err);
+		return err;
+	}
+
+	pm_runtime_enable(dev);
+
+	return 0;
+}
+
+static int tegra210_amx_platform_remove(struct platform_device *pdev)
+{
+	pm_runtime_disable(&pdev->dev);
+
+	return 0;
+}
+
+static const struct dev_pm_ops tegra210_amx_pm_ops = {
+	SET_RUNTIME_PM_OPS(tegra210_amx_runtime_suspend,
+			   tegra210_amx_runtime_resume, NULL)
+	SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend,
+				pm_runtime_force_resume)
+};
+
+static struct platform_driver tegra210_amx_driver = {
+	.driver = {
+		.name = "tegra210-amx",
+		.of_match_table = tegra210_amx_of_match,
+		.pm = &tegra210_amx_pm_ops,
+	},
+	.probe = tegra210_amx_platform_probe,
+	.remove = tegra210_amx_platform_remove,
+};
+module_platform_driver(tegra210_amx_driver);
+
+MODULE_AUTHOR("Songhee Baek <sbaek@nvidia.com>");
+MODULE_DESCRIPTION("Tegra210 AMX ASoC driver");
+MODULE_LICENSE("GPL v2");