sound/soc/tegra/tegra210_ahub.c

// SPDX-License-Identifier: GPL-2.0-only
//
// tegra210_ahub.c - Tegra210 AHUB 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/soc.h>
#include "tegra210_ahub.h"

static int tegra_ahub_get_value_enum(struct snd_kcontrol *kctl,
				     struct snd_ctl_elem_value *uctl)
{
	struct snd_soc_component *cmpnt = snd_soc_dapm_kcontrol_component(kctl);
	struct tegra_ahub *ahub = snd_soc_component_get_drvdata(cmpnt);
	struct soc_enum *e = (struct soc_enum *)kctl->private_value;
	unsigned int reg, i, bit_pos = 0;

	/*
	 * Find the bit position of current MUX input.
	 * If nothing is set, position would be 0 and it corresponds to 'None'.
	 */
	for (i = 0; i < ahub->soc_data->reg_count; i++) {
		unsigned int reg_val;

		reg = e->reg + (TEGRA210_XBAR_PART1_RX * i);
		reg_val = snd_soc_component_read(cmpnt, reg);
		reg_val &= ahub->soc_data->mask[i];

		if (reg_val) {
			bit_pos = ffs(reg_val) +
				  (8 * cmpnt->val_bytes * i);
			break;
		}
	}

	/* Find index related to the item in array *_ahub_mux_texts[] */
	for (i = 0; i < e->items; i++) {
		if (bit_pos == e->values[i]) {
			uctl->value.enumerated.item[0] = i;
			break;
		}
	}

	return 0;
}

static int tegra_ahub_put_value_enum(struct snd_kcontrol *kctl,
				     struct snd_ctl_elem_value *uctl)
{
	struct snd_soc_component *cmpnt = snd_soc_dapm_kcontrol_component(kctl);
	struct tegra_ahub *ahub = snd_soc_component_get_drvdata(cmpnt);
	struct snd_soc_dapm_context *dapm = snd_soc_dapm_kcontrol_dapm(kctl);
	struct soc_enum *e = (struct soc_enum *)kctl->private_value;
	struct snd_soc_dapm_update update[TEGRA_XBAR_UPDATE_MAX_REG] = { };
	unsigned int *item = uctl->value.enumerated.item;
	unsigned int value = e->values[item[0]];
	unsigned int i, bit_pos, reg_idx = 0, reg_val = 0;

	if (item[0] >= e->items)
		return -EINVAL;

	if (value) {
		/* Get the register index and value to set */
		reg_idx = (value - 1) / (8 * cmpnt->val_bytes);
		bit_pos = (value - 1) % (8 * cmpnt->val_bytes);
		reg_val = BIT(bit_pos);
	}

	/*
	 * Run through all parts of a MUX register to find the state changes.
	 * There will be an additional update if new MUX input value is from
	 * different part of the MUX register.
	 */
	for (i = 0; i < ahub->soc_data->reg_count; i++) {
		update[i].reg = e->reg + (TEGRA210_XBAR_PART1_RX * i);
		update[i].val = (i == reg_idx) ? reg_val : 0;
		update[i].mask = ahub->soc_data->mask[i];
		update[i].kcontrol = kctl;

		/* Update widget power if state has changed */
		if (snd_soc_component_test_bits(cmpnt, update[i].reg,
						update[i].mask, update[i].val))
			snd_soc_dapm_mux_update_power(dapm, kctl, item[0], e,
						      &update[i]);
	}

	return 0;
}

static struct snd_soc_dai_driver tegra210_ahub_dais[] = {
	DAI(ADMAIF1),
	DAI(ADMAIF2),
	DAI(ADMAIF3),
	DAI(ADMAIF4),
	DAI(ADMAIF5),
	DAI(ADMAIF6),
	DAI(ADMAIF7),
	DAI(ADMAIF8),
	DAI(ADMAIF9),
	DAI(ADMAIF10),
	DAI(I2S1),
	DAI(I2S2),
	DAI(I2S3),
	DAI(I2S4),
	DAI(I2S5),
	DAI(DMIC1),
	DAI(DMIC2),
	DAI(DMIC3),
};

static struct snd_soc_dai_driver tegra186_ahub_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),
	DAI(I2S1),
	DAI(I2S2),
	DAI(I2S3),
	DAI(I2S4),
	DAI(I2S5),
	DAI(I2S6),
	DAI(DMIC1),
	DAI(DMIC2),
	DAI(DMIC3),
	DAI(DMIC4),
	DAI(DSPK1),
	DAI(DSPK2),
};

static const char * const tegra210_ahub_mux_texts[] = {
	"None",
	"ADMAIF1",
	"ADMAIF2",
	"ADMAIF3",
	"ADMAIF4",
	"ADMAIF5",
	"ADMAIF6",
	"ADMAIF7",
	"ADMAIF8",
	"ADMAIF9",
	"ADMAIF10",
	"I2S1",
	"I2S2",
	"I2S3",
	"I2S4",
	"I2S5",
	"DMIC1",
	"DMIC2",
	"DMIC3",
};

static const char * const tegra186_ahub_mux_texts[] = {
	"None",
	"ADMAIF1",
	"ADMAIF2",
	"ADMAIF3",
	"ADMAIF4",
	"ADMAIF5",
	"ADMAIF6",
	"ADMAIF7",
	"ADMAIF8",
	"ADMAIF9",
	"ADMAIF10",
	"ADMAIF11",
	"ADMAIF12",
	"ADMAIF13",
	"ADMAIF14",
	"ADMAIF15",
	"ADMAIF16",
	"I2S1",
	"I2S2",
	"I2S3",
	"I2S4",
	"I2S5",
	"I2S6",
	"ADMAIF17",
	"ADMAIF18",
	"ADMAIF19",
	"ADMAIF20",
	"DMIC1",
	"DMIC2",
	"DMIC3",
	"DMIC4",
};

static const unsigned int tegra210_ahub_mux_values[] = {
	0,
	MUX_VALUE(0, 0),
	MUX_VALUE(0, 1),
	MUX_VALUE(0, 2),
	MUX_VALUE(0, 3),
	MUX_VALUE(0, 4),
	MUX_VALUE(0, 5),
	MUX_VALUE(0, 6),
	MUX_VALUE(0, 7),
	MUX_VALUE(0, 8),
	MUX_VALUE(0, 9),
	MUX_VALUE(0, 16),
	MUX_VALUE(0, 17),
	MUX_VALUE(0, 18),
	MUX_VALUE(0, 19),
	MUX_VALUE(0, 20),
	MUX_VALUE(2, 18),
	MUX_VALUE(2, 19),
	MUX_VALUE(2, 20),
};

static const unsigned int tegra186_ahub_mux_values[] = {
	0,
	MUX_VALUE(0, 0),
	MUX_VALUE(0, 1),
	MUX_VALUE(0, 2),
	MUX_VALUE(0, 3),
	MUX_VALUE(0, 4),
	MUX_VALUE(0, 5),
	MUX_VALUE(0, 6),
	MUX_VALUE(0, 7),
	MUX_VALUE(0, 8),
	MUX_VALUE(0, 9),
	MUX_VALUE(0, 10),
	MUX_VALUE(0, 11),
	MUX_VALUE(0, 12),
	MUX_VALUE(0, 13),
	MUX_VALUE(0, 14),
	MUX_VALUE(0, 15),
	MUX_VALUE(0, 16),
	MUX_VALUE(0, 17),
	MUX_VALUE(0, 18),
	MUX_VALUE(0, 19),
	MUX_VALUE(0, 20),
	MUX_VALUE(0, 21),
	MUX_VALUE(3, 16),
	MUX_VALUE(3, 17),
	MUX_VALUE(3, 18),
	MUX_VALUE(3, 19),
	MUX_VALUE(2, 18),
	MUX_VALUE(2, 19),
	MUX_VALUE(2, 20),
	MUX_VALUE(2, 21),
};

/* Controls for t210 */
MUX_ENUM_CTRL_DECL(t210_admaif1_tx, 0x00);
MUX_ENUM_CTRL_DECL(t210_admaif2_tx, 0x01);
MUX_ENUM_CTRL_DECL(t210_admaif3_tx, 0x02);
MUX_ENUM_CTRL_DECL(t210_admaif4_tx, 0x03);
MUX_ENUM_CTRL_DECL(t210_admaif5_tx, 0x04);
MUX_ENUM_CTRL_DECL(t210_admaif6_tx, 0x05);
MUX_ENUM_CTRL_DECL(t210_admaif7_tx, 0x06);
MUX_ENUM_CTRL_DECL(t210_admaif8_tx, 0x07);
MUX_ENUM_CTRL_DECL(t210_admaif9_tx, 0x08);
MUX_ENUM_CTRL_DECL(t210_admaif10_tx, 0x09);
MUX_ENUM_CTRL_DECL(t210_i2s1_tx, 0x10);
MUX_ENUM_CTRL_DECL(t210_i2s2_tx, 0x11);
MUX_ENUM_CTRL_DECL(t210_i2s3_tx, 0x12);
MUX_ENUM_CTRL_DECL(t210_i2s4_tx, 0x13);
MUX_ENUM_CTRL_DECL(t210_i2s5_tx, 0x14);

/* Controls for t186 */
MUX_ENUM_CTRL_DECL_186(t186_admaif1_tx, 0x00);
MUX_ENUM_CTRL_DECL_186(t186_admaif2_tx, 0x01);
MUX_ENUM_CTRL_DECL_186(t186_admaif3_tx, 0x02);
MUX_ENUM_CTRL_DECL_186(t186_admaif4_tx, 0x03);
MUX_ENUM_CTRL_DECL_186(t186_admaif5_tx, 0x04);
MUX_ENUM_CTRL_DECL_186(t186_admaif6_tx, 0x05);
MUX_ENUM_CTRL_DECL_186(t186_admaif7_tx, 0x06);
MUX_ENUM_CTRL_DECL_186(t186_admaif8_tx, 0x07);
MUX_ENUM_CTRL_DECL_186(t186_admaif9_tx, 0x08);
MUX_ENUM_CTRL_DECL_186(t186_admaif10_tx, 0x09);
MUX_ENUM_CTRL_DECL_186(t186_i2s1_tx, 0x10);
MUX_ENUM_CTRL_DECL_186(t186_i2s2_tx, 0x11);
MUX_ENUM_CTRL_DECL_186(t186_i2s3_tx, 0x12);
MUX_ENUM_CTRL_DECL_186(t186_i2s4_tx, 0x13);
MUX_ENUM_CTRL_DECL_186(t186_i2s5_tx, 0x14);
MUX_ENUM_CTRL_DECL_186(t186_admaif11_tx, 0x0a);
MUX_ENUM_CTRL_DECL_186(t186_admaif12_tx, 0x0b);
MUX_ENUM_CTRL_DECL_186(t186_admaif13_tx, 0x0c);
MUX_ENUM_CTRL_DECL_186(t186_admaif14_tx, 0x0d);
MUX_ENUM_CTRL_DECL_186(t186_admaif15_tx, 0x0e);
MUX_ENUM_CTRL_DECL_186(t186_admaif16_tx, 0x0f);
MUX_ENUM_CTRL_DECL_186(t186_i2s6_tx, 0x15);
MUX_ENUM_CTRL_DECL_186(t186_dspk1_tx, 0x30);
MUX_ENUM_CTRL_DECL_186(t186_dspk2_tx, 0x31);
MUX_ENUM_CTRL_DECL_186(t186_admaif17_tx, 0x68);
MUX_ENUM_CTRL_DECL_186(t186_admaif18_tx, 0x69);
MUX_ENUM_CTRL_DECL_186(t186_admaif19_tx, 0x6a);
MUX_ENUM_CTRL_DECL_186(t186_admaif20_tx, 0x6b);

/*
 * The number of entries in, and order of, this array is closely tied to the
 * calculation of tegra210_ahub_codec.num_dapm_widgets near the end of
 * tegra210_ahub_probe()
 */
static const struct snd_soc_dapm_widget tegra210_ahub_widgets[] = {
	WIDGETS("ADMAIF1", t210_admaif1_tx),
	WIDGETS("ADMAIF2", t210_admaif2_tx),
	WIDGETS("ADMAIF3", t210_admaif3_tx),
	WIDGETS("ADMAIF4", t210_admaif4_tx),
	WIDGETS("ADMAIF5", t210_admaif5_tx),
	WIDGETS("ADMAIF6", t210_admaif6_tx),
	WIDGETS("ADMAIF7", t210_admaif7_tx),
	WIDGETS("ADMAIF8", t210_admaif8_tx),
	WIDGETS("ADMAIF9", t210_admaif9_tx),
	WIDGETS("ADMAIF10", t210_admaif10_tx),
	WIDGETS("I2S1", t210_i2s1_tx),
	WIDGETS("I2S2", t210_i2s2_tx),
	WIDGETS("I2S3", t210_i2s3_tx),
	WIDGETS("I2S4", t210_i2s4_tx),
	WIDGETS("I2S5", t210_i2s5_tx),
	TX_WIDGETS("DMIC1"),
	TX_WIDGETS("DMIC2"),
	TX_WIDGETS("DMIC3"),
};

static const struct snd_soc_dapm_widget tegra186_ahub_widgets[] = {
	WIDGETS("ADMAIF1", t186_admaif1_tx),
	WIDGETS("ADMAIF2", t186_admaif2_tx),
	WIDGETS("ADMAIF3", t186_admaif3_tx),
	WIDGETS("ADMAIF4", t186_admaif4_tx),
	WIDGETS("ADMAIF5", t186_admaif5_tx),
	WIDGETS("ADMAIF6", t186_admaif6_tx),
	WIDGETS("ADMAIF7", t186_admaif7_tx),
	WIDGETS("ADMAIF8", t186_admaif8_tx),
	WIDGETS("ADMAIF9", t186_admaif9_tx),
	WIDGETS("ADMAIF10", t186_admaif10_tx),
	WIDGETS("ADMAIF11", t186_admaif11_tx),
	WIDGETS("ADMAIF12", t186_admaif12_tx),
	WIDGETS("ADMAIF13", t186_admaif13_tx),
	WIDGETS("ADMAIF14", t186_admaif14_tx),
	WIDGETS("ADMAIF15", t186_admaif15_tx),
	WIDGETS("ADMAIF16", t186_admaif16_tx),
	WIDGETS("ADMAIF17", t186_admaif17_tx),
	WIDGETS("ADMAIF18", t186_admaif18_tx),
	WIDGETS("ADMAIF19", t186_admaif19_tx),
	WIDGETS("ADMAIF20", t186_admaif20_tx),
	WIDGETS("I2S1", t186_i2s1_tx),
	WIDGETS("I2S2", t186_i2s2_tx),
	WIDGETS("I2S3", t186_i2s3_tx),
	WIDGETS("I2S4", t186_i2s4_tx),
	WIDGETS("I2S5", t186_i2s5_tx),
	WIDGETS("I2S6", t186_i2s6_tx),
	TX_WIDGETS("DMIC1"),
	TX_WIDGETS("DMIC2"),
	TX_WIDGETS("DMIC3"),
	TX_WIDGETS("DMIC4"),
	WIDGETS("DSPK1", t186_dspk1_tx),
	WIDGETS("DSPK2", t186_dspk2_tx),
};

#define TEGRA_COMMON_MUX_ROUTES(name)					\
	{ name " XBAR-TX",	 NULL,		name " Mux" },		\
	{ name " Mux",		"ADMAIF1",	"ADMAIF1 XBAR-RX" },	\
	{ name " Mux",		"ADMAIF2",	"ADMAIF2 XBAR-RX" },	\
	{ name " Mux",		"ADMAIF3",	"ADMAIF3 XBAR-RX" },	\
	{ name " Mux",		"ADMAIF4",	"ADMAIF4 XBAR-RX" },	\
	{ name " Mux",		"ADMAIF5",	"ADMAIF5 XBAR-RX" },	\
	{ name " Mux",		"ADMAIF6",	"ADMAIF6 XBAR-RX" },	\
	{ name " Mux",		"ADMAIF7",	"ADMAIF7 XBAR-RX" },	\
	{ name " Mux",		"ADMAIF8",	"ADMAIF8 XBAR-RX" },	\
	{ name " Mux",		"ADMAIF9",	"ADMAIF9 XBAR-RX" },	\
	{ name " Mux",		"ADMAIF10",	"ADMAIF10 XBAR-RX" },	\
	{ name " Mux",		"I2S1",		"I2S1 XBAR-RX" },	\
	{ name " Mux",		"I2S2",		"I2S2 XBAR-RX" },	\
	{ name " Mux",		"I2S3",		"I2S3 XBAR-RX" },	\
	{ name " Mux",		"I2S4",		"I2S4 XBAR-RX" },	\
	{ name " Mux",		"I2S5",		"I2S5 XBAR-RX" },	\
	{ name " Mux",		"DMIC1",	"DMIC1 XBAR-RX" },	\
	{ name " Mux",		"DMIC2",	"DMIC2 XBAR-RX" },	\
	{ name " Mux",		"DMIC3",	"DMIC3 XBAR-RX" },

#define TEGRA186_ONLY_MUX_ROUTES(name)					\
	{ name " Mux",		"ADMAIF11",	"ADMAIF11 XBAR-RX" },	\
	{ name " Mux",		"ADMAIF12",	"ADMAIF12 XBAR-RX" },	\
	{ name " Mux",		"ADMAIF13",	"ADMAIF13 XBAR-RX" },	\
	{ name " Mux",		"ADMAIF14",	"ADMAIF14 XBAR-RX" },	\
	{ name " Mux",		"ADMAIF15",	"ADMAIF15 XBAR-RX" },	\
	{ name " Mux",		"ADMAIF16",	"ADMAIF16 XBAR-RX" },	\
	{ name " Mux",		"ADMAIF17",	"ADMAIF17 XBAR-RX" },	\
	{ name " Mux",		"ADMAIF18",	"ADMAIF18 XBAR-RX" },	\
	{ name " Mux",		"ADMAIF19",	"ADMAIF19 XBAR-RX" },	\
	{ name " Mux",		"ADMAIF20",	"ADMAIF20 XBAR-RX" },	\
	{ name " Mux",		"I2S6",		"I2S6 XBAR-RX" },	\
	{ name " Mux",		"DMIC4",	"DMIC4 XBAR-RX" },

#define TEGRA210_MUX_ROUTES(name)						\
	TEGRA_COMMON_MUX_ROUTES(name)

#define TEGRA186_MUX_ROUTES(name)						\
	TEGRA_COMMON_MUX_ROUTES(name)					\
	TEGRA186_ONLY_MUX_ROUTES(name)

/* Connect FEs with XBAR */
#define TEGRA_FE_ROUTES(name) \
	{ name " XBAR-Playback",	NULL,	name " Playback" },	\
	{ name " XBAR-RX",		NULL,	name " XBAR-Playback"}, \
	{ name " XBAR-Capture",		NULL,	name " XBAR-TX" },      \
	{ name " Capture",		NULL,	name " XBAR-Capture" },

/*
 * The number of entries in, and order of, this array is closely tied to the
 * calculation of tegra210_ahub_codec.num_dapm_routes near the end of
 * tegra210_ahub_probe()
 */
static const struct snd_soc_dapm_route tegra210_ahub_routes[] = {
	TEGRA_FE_ROUTES("ADMAIF1")
	TEGRA_FE_ROUTES("ADMAIF2")
	TEGRA_FE_ROUTES("ADMAIF3")
	TEGRA_FE_ROUTES("ADMAIF4")
	TEGRA_FE_ROUTES("ADMAIF5")
	TEGRA_FE_ROUTES("ADMAIF6")
	TEGRA_FE_ROUTES("ADMAIF7")
	TEGRA_FE_ROUTES("ADMAIF8")
	TEGRA_FE_ROUTES("ADMAIF9")
	TEGRA_FE_ROUTES("ADMAIF10")
	TEGRA210_MUX_ROUTES("ADMAIF1")
	TEGRA210_MUX_ROUTES("ADMAIF2")
	TEGRA210_MUX_ROUTES("ADMAIF3")
	TEGRA210_MUX_ROUTES("ADMAIF4")
	TEGRA210_MUX_ROUTES("ADMAIF5")
	TEGRA210_MUX_ROUTES("ADMAIF6")
	TEGRA210_MUX_ROUTES("ADMAIF7")
	TEGRA210_MUX_ROUTES("ADMAIF8")
	TEGRA210_MUX_ROUTES("ADMAIF9")
	TEGRA210_MUX_ROUTES("ADMAIF10")
	TEGRA210_MUX_ROUTES("I2S1")
	TEGRA210_MUX_ROUTES("I2S2")
	TEGRA210_MUX_ROUTES("I2S3")
	TEGRA210_MUX_ROUTES("I2S4")
	TEGRA210_MUX_ROUTES("I2S5")
};

static const struct snd_soc_dapm_route tegra186_ahub_routes[] = {
	TEGRA_FE_ROUTES("ADMAIF1")
	TEGRA_FE_ROUTES("ADMAIF2")
	TEGRA_FE_ROUTES("ADMAIF3")
	TEGRA_FE_ROUTES("ADMAIF4")
	TEGRA_FE_ROUTES("ADMAIF5")
	TEGRA_FE_ROUTES("ADMAIF6")
	TEGRA_FE_ROUTES("ADMAIF7")
	TEGRA_FE_ROUTES("ADMAIF8")
	TEGRA_FE_ROUTES("ADMAIF9")
	TEGRA_FE_ROUTES("ADMAIF10")
	TEGRA_FE_ROUTES("ADMAIF11")
	TEGRA_FE_ROUTES("ADMAIF12")
	TEGRA_FE_ROUTES("ADMAIF13")
	TEGRA_FE_ROUTES("ADMAIF14")
	TEGRA_FE_ROUTES("ADMAIF15")
	TEGRA_FE_ROUTES("ADMAIF16")
	TEGRA_FE_ROUTES("ADMAIF17")
	TEGRA_FE_ROUTES("ADMAIF18")
	TEGRA_FE_ROUTES("ADMAIF19")
	TEGRA_FE_ROUTES("ADMAIF20")
	TEGRA186_MUX_ROUTES("ADMAIF1")
	TEGRA186_MUX_ROUTES("ADMAIF2")
	TEGRA186_MUX_ROUTES("ADMAIF3")
	TEGRA186_MUX_ROUTES("ADMAIF4")
	TEGRA186_MUX_ROUTES("ADMAIF5")
	TEGRA186_MUX_ROUTES("ADMAIF6")
	TEGRA186_MUX_ROUTES("ADMAIF7")
	TEGRA186_MUX_ROUTES("ADMAIF8")
	TEGRA186_MUX_ROUTES("ADMAIF9")
	TEGRA186_MUX_ROUTES("ADMAIF10")
	TEGRA186_MUX_ROUTES("ADMAIF11")
	TEGRA186_MUX_ROUTES("ADMAIF12")
	TEGRA186_MUX_ROUTES("ADMAIF13")
	TEGRA186_MUX_ROUTES("ADMAIF14")
	TEGRA186_MUX_ROUTES("ADMAIF15")
	TEGRA186_MUX_ROUTES("ADMAIF16")
	TEGRA186_MUX_ROUTES("ADMAIF17")
	TEGRA186_MUX_ROUTES("ADMAIF18")
	TEGRA186_MUX_ROUTES("ADMAIF19")
	TEGRA186_MUX_ROUTES("ADMAIF20")
	TEGRA186_MUX_ROUTES("I2S1")
	TEGRA186_MUX_ROUTES("I2S2")
	TEGRA186_MUX_ROUTES("I2S3")
	TEGRA186_MUX_ROUTES("I2S4")
	TEGRA186_MUX_ROUTES("I2S5")
	TEGRA186_MUX_ROUTES("I2S6")
	TEGRA186_MUX_ROUTES("DSPK1")
	TEGRA186_MUX_ROUTES("DSPK2")
};

static const struct snd_soc_component_driver tegra210_ahub_component = {
	.dapm_widgets		= tegra210_ahub_widgets,
	.num_dapm_widgets	= ARRAY_SIZE(tegra210_ahub_widgets),
	.dapm_routes		= tegra210_ahub_routes,
	.num_dapm_routes	= ARRAY_SIZE(tegra210_ahub_routes),
};

static const struct snd_soc_component_driver tegra186_ahub_component = {
	.dapm_widgets = tegra186_ahub_widgets,
	.num_dapm_widgets = ARRAY_SIZE(tegra186_ahub_widgets),
	.dapm_routes = tegra186_ahub_routes,
	.num_dapm_routes = ARRAY_SIZE(tegra186_ahub_routes),
};

static const struct regmap_config tegra210_ahub_regmap_config = {
	.reg_bits		= 32,
	.val_bits		= 32,
	.reg_stride		= 4,
	.max_register		= TEGRA210_MAX_REGISTER_ADDR,
	.cache_type		= REGCACHE_FLAT,
};

static const struct regmap_config tegra186_ahub_regmap_config = {
	.reg_bits		= 32,
	.val_bits		= 32,
	.reg_stride		= 4,
	.max_register		= TEGRA186_MAX_REGISTER_ADDR,
	.cache_type		= REGCACHE_FLAT,
};

static const struct tegra_ahub_soc_data soc_data_tegra210 = {
	.cmpnt_drv	= &tegra210_ahub_component,
	.dai_drv	= tegra210_ahub_dais,
	.num_dais	= ARRAY_SIZE(tegra210_ahub_dais),
	.regmap_config	= &tegra210_ahub_regmap_config,
	.mask[0]	= TEGRA210_XBAR_REG_MASK_0,
	.mask[1]	= TEGRA210_XBAR_REG_MASK_1,
	.mask[2]	= TEGRA210_XBAR_REG_MASK_2,
	.mask[3]	= TEGRA210_XBAR_REG_MASK_3,
	.reg_count	= TEGRA210_XBAR_UPDATE_MAX_REG,
};

static const struct tegra_ahub_soc_data soc_data_tegra186 = {
	.cmpnt_drv	= &tegra186_ahub_component,
	.dai_drv	= tegra186_ahub_dais,
	.num_dais	= ARRAY_SIZE(tegra186_ahub_dais),
	.regmap_config	= &tegra186_ahub_regmap_config,
	.mask[0]	= TEGRA186_XBAR_REG_MASK_0,
	.mask[1]	= TEGRA186_XBAR_REG_MASK_1,
	.mask[2]	= TEGRA186_XBAR_REG_MASK_2,
	.mask[3]	= TEGRA186_XBAR_REG_MASK_3,
	.reg_count	= TEGRA186_XBAR_UPDATE_MAX_REG,
};

static const struct of_device_id tegra_ahub_of_match[] = {
	{ .compatible = "nvidia,tegra210-ahub", .data = &soc_data_tegra210 },
	{ .compatible = "nvidia,tegra186-ahub", .data = &soc_data_tegra186 },
	{},
};
MODULE_DEVICE_TABLE(of, tegra_ahub_of_match);

static int __maybe_unused tegra_ahub_runtime_suspend(struct device *dev)
{
	struct tegra_ahub *ahub = dev_get_drvdata(dev);

	regcache_cache_only(ahub->regmap, true);
	regcache_mark_dirty(ahub->regmap);

	clk_disable_unprepare(ahub->clk);

	return 0;
}

static int __maybe_unused tegra_ahub_runtime_resume(struct device *dev)
{
	struct tegra_ahub *ahub = dev_get_drvdata(dev);
	int err;

	err = clk_prepare_enable(ahub->clk);
	if (err) {
		dev_err(dev, "failed to enable AHUB clock, err: %d\n", err);
		return err;
	}

	regcache_cache_only(ahub->regmap, false);
	regcache_sync(ahub->regmap);

	return 0;
}

static int tegra_ahub_probe(struct platform_device *pdev)
{
	struct tegra_ahub *ahub;
	void __iomem *regs;
	int err;

	ahub = devm_kzalloc(&pdev->dev, sizeof(*ahub), GFP_KERNEL);
	if (!ahub)
		return -ENOMEM;

	ahub->soc_data = of_device_get_match_data(&pdev->dev);

	platform_set_drvdata(pdev, ahub);

	ahub->clk = devm_clk_get(&pdev->dev, "ahub");
	if (IS_ERR(ahub->clk)) {
		dev_err(&pdev->dev, "can't retrieve AHUB clock\n");
		return PTR_ERR(ahub->clk);
	}

	regs = devm_platform_ioremap_resource(pdev, 0);
	if (IS_ERR(regs))
		return PTR_ERR(regs);

	ahub->regmap = devm_regmap_init_mmio(&pdev->dev, regs,
					     ahub->soc_data->regmap_config);
	if (IS_ERR(ahub->regmap)) {
		dev_err(&pdev->dev, "regmap init failed\n");
		return PTR_ERR(ahub->regmap);
	}

	regcache_cache_only(ahub->regmap, true);

	err = devm_snd_soc_register_component(&pdev->dev,
					      ahub->soc_data->cmpnt_drv,
					      ahub->soc_data->dai_drv,
					      ahub->soc_data->num_dais);
	if (err) {
		dev_err(&pdev->dev, "can't register AHUB component, err: %d\n",
			err);
		return err;
	}

	err = of_platform_populate(pdev->dev.of_node, NULL, NULL, &pdev->dev);
	if (err)
		return err;

	pm_runtime_enable(&pdev->dev);

	return 0;
}

static int tegra_ahub_remove(struct platform_device *pdev)
{
	pm_runtime_disable(&pdev->dev);

	return 0;
}

static const struct dev_pm_ops tegra_ahub_pm_ops = {
	SET_RUNTIME_PM_OPS(tegra_ahub_runtime_suspend,
			   tegra_ahub_runtime_resume, NULL)
	SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend,
				pm_runtime_force_resume)
};

static struct platform_driver tegra_ahub_driver = {
	.probe = tegra_ahub_probe,
	.remove = tegra_ahub_remove,
	.driver = {
		.name = "tegra210-ahub",
		.of_match_table = tegra_ahub_of_match,
		.pm = &tegra_ahub_pm_ops,
	},
};
module_platform_driver(tegra_ahub_driver);

MODULE_AUTHOR("Stephen Warren <swarren@nvidia.com>");
MODULE_AUTHOR("Mohan Kumar <mkumard@nvidia.com>");
MODULE_DESCRIPTION("Tegra210 ASoC AHUB driver");
MODULE_LICENSE("GPL v2");