1 files changed, 780 insertions, 0 deletions

diff --git a/sound/soc/codecs/tas2552.c b/sound/soc/codecs/tas2552.c
new file mode 100644
index 000000000..355ecafb7
--- /dev/null
+++ b/sound/soc/codecs/tas2552.c
@@ -0,0 +1,780 @@
+/*
+ * tas2552.c - ALSA SoC Texas Instruments TAS2552 Mono Audio Amplifier
+ *
+ * Copyright (C) 2014 Texas Instruments Incorporated -  http://www.ti.com
+ *
+ * Author: Dan Murphy <dmurphy@ti.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * version 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ */
+
+#include <linux/module.h>
+#include <linux/errno.h>
+#include <linux/device.h>
+#include <linux/i2c.h>
+#include <linux/gpio.h>
+#include <linux/of_gpio.h>
+#include <linux/pm_runtime.h>
+#include <linux/regmap.h>
+#include <linux/slab.h>
+
+#include <linux/gpio/consumer.h>
+#include <linux/regulator/consumer.h>
+
+#include <sound/pcm.h>
+#include <sound/pcm_params.h>
+#include <sound/soc.h>
+#include <sound/soc-dapm.h>
+#include <sound/tlv.h>
+#include <sound/tas2552-plat.h>
+#include <dt-bindings/sound/tas2552.h>
+
+#include "tas2552.h"
+
+static const struct reg_default tas2552_reg_defs[] = {
+	{TAS2552_CFG_1, 0x22},
+	{TAS2552_CFG_3, 0x80},
+	{TAS2552_DOUT, 0x00},
+	{TAS2552_OUTPUT_DATA, 0xc0},
+	{TAS2552_PDM_CFG, 0x01},
+	{TAS2552_PGA_GAIN, 0x00},
+	{TAS2552_BOOST_APT_CTRL, 0x0f},
+	{TAS2552_RESERVED_0D, 0xbe},
+	{TAS2552_LIMIT_RATE_HYS, 0x08},
+	{TAS2552_CFG_2, 0xef},
+	{TAS2552_SER_CTRL_1, 0x00},
+	{TAS2552_SER_CTRL_2, 0x00},
+	{TAS2552_PLL_CTRL_1, 0x10},
+	{TAS2552_PLL_CTRL_2, 0x00},
+	{TAS2552_PLL_CTRL_3, 0x00},
+	{TAS2552_BTIP, 0x8f},
+	{TAS2552_BTS_CTRL, 0x80},
+	{TAS2552_LIMIT_RELEASE, 0x04},
+	{TAS2552_LIMIT_INT_COUNT, 0x00},
+	{TAS2552_EDGE_RATE_CTRL, 0x40},
+	{TAS2552_VBAT_DATA, 0x00},
+};
+
+#define TAS2552_NUM_SUPPLIES	3
+static const char *tas2552_supply_names[TAS2552_NUM_SUPPLIES] = {
+	"vbat",		/* vbat voltage */
+	"iovdd",	/* I/O Voltage */
+	"avdd",		/* Analog DAC Voltage */
+};
+
+struct tas2552_data {
+	struct snd_soc_component *component;
+	struct regmap *regmap;
+	struct i2c_client *tas2552_client;
+	struct regulator_bulk_data supplies[TAS2552_NUM_SUPPLIES];
+	struct gpio_desc *enable_gpio;
+	unsigned char regs[TAS2552_VBAT_DATA];
+	unsigned int pll_clkin;
+	int pll_clk_id;
+	unsigned int pdm_clk;
+	int pdm_clk_id;
+
+	unsigned int dai_fmt;
+	unsigned int tdm_delay;
+};
+
+static int tas2552_post_event(struct snd_soc_dapm_widget *w,
+			      struct snd_kcontrol *kcontrol, int event)
+{
+	struct snd_soc_component *component = snd_soc_dapm_to_component(w->dapm);
+
+	switch (event) {
+	case SND_SOC_DAPM_POST_PMU:
+		snd_soc_component_write(component, TAS2552_RESERVED_0D, 0xc0);
+		snd_soc_component_update_bits(component, TAS2552_LIMIT_RATE_HYS, (1 << 5),
+				    (1 << 5));
+		snd_soc_component_update_bits(component, TAS2552_CFG_2, 1, 0);
+		snd_soc_component_update_bits(component, TAS2552_CFG_1, TAS2552_SWS, 0);
+		break;
+	case SND_SOC_DAPM_POST_PMD:
+		snd_soc_component_update_bits(component, TAS2552_CFG_1, TAS2552_SWS,
+				    TAS2552_SWS);
+		snd_soc_component_update_bits(component, TAS2552_CFG_2, 1, 1);
+		snd_soc_component_update_bits(component, TAS2552_LIMIT_RATE_HYS, (1 << 5), 0);
+		snd_soc_component_write(component, TAS2552_RESERVED_0D, 0xbe);
+		break;
+	}
+	return 0;
+}
+
+/* Input mux controls */
+static const char * const tas2552_input_texts[] = {
+	"Digital", "Analog" };
+static SOC_ENUM_SINGLE_DECL(tas2552_input_mux_enum, TAS2552_CFG_3, 7,
+			    tas2552_input_texts);
+
+static const struct snd_kcontrol_new tas2552_input_mux_control =
+	SOC_DAPM_ENUM("Route", tas2552_input_mux_enum);
+
+static const struct snd_soc_dapm_widget tas2552_dapm_widgets[] =
+{
+	SND_SOC_DAPM_INPUT("IN"),
+
+	/* MUX Controls */
+	SND_SOC_DAPM_MUX("Input selection", SND_SOC_NOPM, 0, 0,
+			 &tas2552_input_mux_control),
+
+	SND_SOC_DAPM_AIF_IN("DAC IN", "DAC Playback", 0, SND_SOC_NOPM, 0, 0),
+	SND_SOC_DAPM_DAC("DAC", NULL, SND_SOC_NOPM, 0, 0),
+	SND_SOC_DAPM_OUT_DRV("ClassD", TAS2552_CFG_2, 7, 0, NULL, 0),
+	SND_SOC_DAPM_SUPPLY("PLL", TAS2552_CFG_2, 3, 0, NULL, 0),
+	SND_SOC_DAPM_POST("Post Event", tas2552_post_event),
+
+	SND_SOC_DAPM_OUTPUT("OUT")
+};
+
+static const struct snd_soc_dapm_route tas2552_audio_map[] = {
+	{"DAC", NULL, "DAC IN"},
+	{"Input selection", "Digital", "DAC"},
+	{"Input selection", "Analog", "IN"},
+	{"ClassD", NULL, "Input selection"},
+	{"OUT", NULL, "ClassD"},
+	{"ClassD", NULL, "PLL"},
+};
+
+#ifdef CONFIG_PM
+static void tas2552_sw_shutdown(struct tas2552_data *tas2552, int sw_shutdown)
+{
+	u8 cfg1_reg = 0;
+
+	if (!tas2552->component)
+		return;
+
+	if (sw_shutdown)
+		cfg1_reg = TAS2552_SWS;
+
+	snd_soc_component_update_bits(tas2552->component, TAS2552_CFG_1, TAS2552_SWS,
+			    cfg1_reg);
+}
+#endif
+
+static int tas2552_setup_pll(struct snd_soc_component *component,
+			     struct snd_pcm_hw_params *params)
+{
+	struct tas2552_data *tas2552 = dev_get_drvdata(component->dev);
+	bool bypass_pll = false;
+	unsigned int pll_clk = params_rate(params) * 512;
+	unsigned int pll_clkin = tas2552->pll_clkin;
+	u8 pll_enable;
+
+	if (!pll_clkin) {
+		if (tas2552->pll_clk_id != TAS2552_PLL_CLKIN_BCLK)
+			return -EINVAL;
+
+		pll_clkin = snd_soc_params_to_bclk(params);
+		pll_clkin += tas2552->tdm_delay;
+	}
+
+	pll_enable = snd_soc_component_read32(component, TAS2552_CFG_2) & TAS2552_PLL_ENABLE;
+	snd_soc_component_update_bits(component, TAS2552_CFG_2, TAS2552_PLL_ENABLE, 0);
+
+	if (pll_clkin == pll_clk)
+		bypass_pll = true;
+
+	if (bypass_pll) {
+		/* By pass the PLL configuration */
+		snd_soc_component_update_bits(component, TAS2552_PLL_CTRL_2,
+				    TAS2552_PLL_BYPASS, TAS2552_PLL_BYPASS);
+	} else {
+		/* Fill in the PLL control registers for J & D
+		 * pll_clk = (.5 * pll_clkin * J.D) / 2^p
+		 * Need to fill in J and D here based on incoming freq
+		 */
+		unsigned int d, q, t;
+		u8 j;
+		u8 pll_sel = (tas2552->pll_clk_id << 3) & TAS2552_PLL_SRC_MASK;
+		u8 p = snd_soc_component_read32(component, TAS2552_PLL_CTRL_1);
+
+		p = (p >> 7);
+
+recalc:
+		t = (pll_clk * 2) << p;
+		j = t / pll_clkin;
+		d = t % pll_clkin;
+		t = pll_clkin / 10000;
+		q = d / (t + 1);
+		d = q + ((9999 - pll_clkin % 10000) * (d / t - q)) / 10000;
+
+		if (d && (pll_clkin < 512000 || pll_clkin > 9200000)) {
+			if (tas2552->pll_clk_id == TAS2552_PLL_CLKIN_BCLK) {
+				pll_clkin = 1800000;
+				pll_sel = (TAS2552_PLL_CLKIN_1_8_FIXED << 3) &
+							TAS2552_PLL_SRC_MASK;
+			} else {
+				pll_clkin = snd_soc_params_to_bclk(params);
+				pll_clkin += tas2552->tdm_delay;
+				pll_sel = (TAS2552_PLL_CLKIN_BCLK << 3) &
+							TAS2552_PLL_SRC_MASK;
+			}
+			goto recalc;
+		}
+
+		snd_soc_component_update_bits(component, TAS2552_CFG_1, TAS2552_PLL_SRC_MASK,
+				    pll_sel);
+
+		snd_soc_component_update_bits(component, TAS2552_PLL_CTRL_1,
+				    TAS2552_PLL_J_MASK, j);
+		/* Will clear the PLL_BYPASS bit */
+		snd_soc_component_write(component, TAS2552_PLL_CTRL_2,
+			      TAS2552_PLL_D_UPPER(d));
+		snd_soc_component_write(component, TAS2552_PLL_CTRL_3,
+			      TAS2552_PLL_D_LOWER(d));
+	}
+
+	/* Restore PLL status */
+	snd_soc_component_update_bits(component, TAS2552_CFG_2, TAS2552_PLL_ENABLE,
+			    pll_enable);
+
+	return 0;
+}
+
+static int tas2552_hw_params(struct snd_pcm_substream *substream,
+			     struct snd_pcm_hw_params *params,
+			     struct snd_soc_dai *dai)
+{
+	struct snd_soc_component *component = dai->component;
+	struct tas2552_data *tas2552 = dev_get_drvdata(component->dev);
+	int cpf;
+	u8 ser_ctrl1_reg, wclk_rate;
+
+	switch (params_width(params)) {
+	case 16:
+		ser_ctrl1_reg = TAS2552_WORDLENGTH_16BIT;
+		cpf = 32 + tas2552->tdm_delay;
+		break;
+	case 20:
+		ser_ctrl1_reg = TAS2552_WORDLENGTH_20BIT;
+		cpf = 64 + tas2552->tdm_delay;
+		break;
+	case 24:
+		ser_ctrl1_reg = TAS2552_WORDLENGTH_24BIT;
+		cpf = 64 + tas2552->tdm_delay;
+		break;
+	case 32:
+		ser_ctrl1_reg = TAS2552_WORDLENGTH_32BIT;
+		cpf = 64 + tas2552->tdm_delay;
+		break;
+	default:
+		dev_err(component->dev, "Not supported sample size: %d\n",
+			params_width(params));
+		return -EINVAL;
+	}
+
+	if (cpf <= 32)
+		ser_ctrl1_reg |= TAS2552_CLKSPERFRAME_32;
+	else if (cpf <= 64)
+		ser_ctrl1_reg |= TAS2552_CLKSPERFRAME_64;
+	else if (cpf <= 128)
+		ser_ctrl1_reg |= TAS2552_CLKSPERFRAME_128;
+	else
+		ser_ctrl1_reg |= TAS2552_CLKSPERFRAME_256;
+
+	snd_soc_component_update_bits(component, TAS2552_SER_CTRL_1,
+			    TAS2552_WORDLENGTH_MASK | TAS2552_CLKSPERFRAME_MASK,
+			    ser_ctrl1_reg);
+
+	switch (params_rate(params)) {
+	case 8000:
+		wclk_rate = TAS2552_WCLK_FREQ_8KHZ;
+		break;
+	case 11025:
+	case 12000:
+		wclk_rate = TAS2552_WCLK_FREQ_11_12KHZ;
+		break;
+	case 16000:
+		wclk_rate = TAS2552_WCLK_FREQ_16KHZ;
+		break;
+	case 22050:
+	case 24000:
+		wclk_rate = TAS2552_WCLK_FREQ_22_24KHZ;
+		break;
+	case 32000:
+		wclk_rate = TAS2552_WCLK_FREQ_32KHZ;
+		break;
+	case 44100:
+	case 48000:
+		wclk_rate = TAS2552_WCLK_FREQ_44_48KHZ;
+		break;
+	case 88200:
+	case 96000:
+		wclk_rate = TAS2552_WCLK_FREQ_88_96KHZ;
+		break;
+	case 176400:
+	case 192000:
+		wclk_rate = TAS2552_WCLK_FREQ_176_192KHZ;
+		break;
+	default:
+		dev_err(component->dev, "Not supported sample rate: %d\n",
+			params_rate(params));
+		return -EINVAL;
+	}
+
+	snd_soc_component_update_bits(component, TAS2552_CFG_3, TAS2552_WCLK_FREQ_MASK,
+			    wclk_rate);
+
+	return tas2552_setup_pll(component, params);
+}
+
+#define TAS2552_DAI_FMT_MASK	(TAS2552_BCLKDIR | \
+				 TAS2552_WCLKDIR | \
+				 TAS2552_DATAFORMAT_MASK)
+static int tas2552_prepare(struct snd_pcm_substream *substream,
+			   struct snd_soc_dai *dai)
+{
+	struct snd_soc_component *component = dai->component;
+	struct tas2552_data *tas2552 = snd_soc_component_get_drvdata(component);
+	int delay = 0;
+
+	/* TDM slot selection only valid in DSP_A/_B mode */
+	if (tas2552->dai_fmt == SND_SOC_DAIFMT_DSP_A)
+		delay += (tas2552->tdm_delay + 1);
+	else if (tas2552->dai_fmt == SND_SOC_DAIFMT_DSP_B)
+		delay += tas2552->tdm_delay;
+
+	/* Configure data delay */
+	snd_soc_component_write(component, TAS2552_SER_CTRL_2, delay);
+
+	return 0;
+}
+
+static int tas2552_set_dai_fmt(struct snd_soc_dai *dai, unsigned int fmt)
+{
+	struct snd_soc_component *component = dai->component;
+	struct tas2552_data *tas2552 = dev_get_drvdata(component->dev);
+	u8 serial_format;
+
+	switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
+	case SND_SOC_DAIFMT_CBS_CFS:
+		serial_format = 0x00;
+		break;
+	case SND_SOC_DAIFMT_CBS_CFM:
+		serial_format = TAS2552_WCLKDIR;
+		break;
+	case SND_SOC_DAIFMT_CBM_CFS:
+		serial_format = TAS2552_BCLKDIR;
+		break;
+	case SND_SOC_DAIFMT_CBM_CFM:
+		serial_format = (TAS2552_BCLKDIR | TAS2552_WCLKDIR);
+		break;
+	default:
+		dev_vdbg(component->dev, "DAI Format master is not found\n");
+		return -EINVAL;
+	}
+
+	switch (fmt & (SND_SOC_DAIFMT_FORMAT_MASK |
+		       SND_SOC_DAIFMT_INV_MASK)) {
+	case (SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF):
+		break;
+	case (SND_SOC_DAIFMT_DSP_A | SND_SOC_DAIFMT_IB_NF):
+	case (SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_IB_NF):
+		serial_format |= TAS2552_DATAFORMAT_DSP;
+		break;
+	case (SND_SOC_DAIFMT_RIGHT_J | SND_SOC_DAIFMT_NB_NF):
+		serial_format |= TAS2552_DATAFORMAT_RIGHT_J;
+		break;
+	case (SND_SOC_DAIFMT_LEFT_J | SND_SOC_DAIFMT_NB_NF):
+		serial_format |= TAS2552_DATAFORMAT_LEFT_J;
+		break;
+	default:
+		dev_vdbg(component->dev, "DAI Format is not found\n");
+		return -EINVAL;
+	}
+	tas2552->dai_fmt = fmt & SND_SOC_DAIFMT_FORMAT_MASK;
+
+	snd_soc_component_update_bits(component, TAS2552_SER_CTRL_1, TAS2552_DAI_FMT_MASK,
+			    serial_format);
+	return 0;
+}
+
+static int tas2552_set_dai_sysclk(struct snd_soc_dai *dai, int clk_id,
+				  unsigned int freq, int dir)
+{
+	struct snd_soc_component *component = dai->component;
+	struct tas2552_data *tas2552 = dev_get_drvdata(component->dev);
+	u8 reg, mask, val;
+
+	switch (clk_id) {
+	case TAS2552_PLL_CLKIN_MCLK:
+	case TAS2552_PLL_CLKIN_IVCLKIN:
+		if (freq < 512000 || freq > 24576000) {
+			/* out of range PLL_CLKIN, fall back to use BCLK */
+			dev_warn(component->dev, "Out of range PLL_CLKIN: %u\n",
+				 freq);
+			clk_id = TAS2552_PLL_CLKIN_BCLK;
+			freq = 0;
+		}
+		/* fall through */
+	case TAS2552_PLL_CLKIN_BCLK:
+	case TAS2552_PLL_CLKIN_1_8_FIXED:
+		mask = TAS2552_PLL_SRC_MASK;
+		val = (clk_id << 3) & mask; /* bit 4:5 in the register */
+		reg = TAS2552_CFG_1;
+		tas2552->pll_clk_id = clk_id;
+		tas2552->pll_clkin = freq;
+		break;
+	case TAS2552_PDM_CLK_PLL:
+	case TAS2552_PDM_CLK_IVCLKIN:
+	case TAS2552_PDM_CLK_BCLK:
+	case TAS2552_PDM_CLK_MCLK:
+		mask = TAS2552_PDM_CLK_SEL_MASK;
+		val = (clk_id >> 1) & mask; /* bit 0:1 in the register */
+		reg = TAS2552_PDM_CFG;
+		tas2552->pdm_clk_id = clk_id;
+		tas2552->pdm_clk = freq;
+		break;
+	default:
+		dev_err(component->dev, "Invalid clk id: %d\n", clk_id);
+		return -EINVAL;
+	}
+
+	snd_soc_component_update_bits(component, reg, mask, val);
+
+	return 0;
+}
+
+static int tas2552_set_dai_tdm_slot(struct snd_soc_dai *dai,
+				    unsigned int tx_mask, unsigned int rx_mask,
+				    int slots, int slot_width)
+{
+	struct snd_soc_component *component = dai->component;
+	struct tas2552_data *tas2552 = snd_soc_component_get_drvdata(component);
+	unsigned int lsb;
+
+	if (unlikely(!tx_mask)) {
+		dev_err(component->dev, "tx masks need to be non 0\n");
+		return -EINVAL;
+	}
+
+	/* TDM based on DSP mode requires slots to be adjacent */
+	lsb = __ffs(tx_mask);
+	if ((lsb + 1) != __fls(tx_mask)) {
+		dev_err(component->dev, "Invalid mask, slots must be adjacent\n");
+		return -EINVAL;
+	}
+
+	tas2552->tdm_delay = lsb * slot_width;
+
+	/* DOUT in high-impedance on inactive bit clocks */
+	snd_soc_component_update_bits(component, TAS2552_DOUT,
+			    TAS2552_SDOUT_TRISTATE, TAS2552_SDOUT_TRISTATE);
+
+	return 0;
+}
+
+static int tas2552_mute(struct snd_soc_dai *dai, int mute)
+{
+	u8 cfg1_reg = 0;
+	struct snd_soc_component *component = dai->component;
+
+	if (mute)
+		cfg1_reg |= TAS2552_MUTE;
+
+	snd_soc_component_update_bits(component, TAS2552_CFG_1, TAS2552_MUTE, cfg1_reg);
+
+	return 0;
+}
+
+#ifdef CONFIG_PM
+static int tas2552_runtime_suspend(struct device *dev)
+{
+	struct tas2552_data *tas2552 = dev_get_drvdata(dev);
+
+	tas2552_sw_shutdown(tas2552, 1);
+
+	regcache_cache_only(tas2552->regmap, true);
+	regcache_mark_dirty(tas2552->regmap);
+
+	gpiod_set_value(tas2552->enable_gpio, 0);
+
+	return 0;
+}
+
+static int tas2552_runtime_resume(struct device *dev)
+{
+	struct tas2552_data *tas2552 = dev_get_drvdata(dev);
+
+	gpiod_set_value(tas2552->enable_gpio, 1);
+
+	tas2552_sw_shutdown(tas2552, 0);
+
+	regcache_cache_only(tas2552->regmap, false);
+	regcache_sync(tas2552->regmap);
+
+	return 0;
+}
+#endif
+
+static const struct dev_pm_ops tas2552_pm = {
+	SET_RUNTIME_PM_OPS(tas2552_runtime_suspend, tas2552_runtime_resume,
+			   NULL)
+};
+
+static const struct snd_soc_dai_ops tas2552_speaker_dai_ops = {
+	.hw_params	= tas2552_hw_params,
+	.prepare	= tas2552_prepare,
+	.set_sysclk	= tas2552_set_dai_sysclk,
+	.set_fmt	= tas2552_set_dai_fmt,
+	.set_tdm_slot	= tas2552_set_dai_tdm_slot,
+	.digital_mute = tas2552_mute,
+};
+
+/* Formats supported by TAS2552 driver. */
+#define TAS2552_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\
+			 SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE)
+
+/* TAS2552 dai structure. */
+static struct snd_soc_dai_driver tas2552_dai[] = {
+	{
+		.name = "tas2552-amplifier",
+		.playback = {
+			.stream_name = "Playback",
+			.channels_min = 2,
+			.channels_max = 2,
+			.rates = SNDRV_PCM_RATE_8000_192000,
+			.formats = TAS2552_FORMATS,
+		},
+		.ops = &tas2552_speaker_dai_ops,
+	},
+};
+
+/*
+ * DAC digital volumes. From -7 to 24 dB in 1 dB steps
+ */
+static DECLARE_TLV_DB_SCALE(dac_tlv, -700, 100, 0);
+
+static const char * const tas2552_din_source_select[] = {
+	"Muted",
+	"Left",
+	"Right",
+	"Left + Right average",
+};
+static SOC_ENUM_SINGLE_DECL(tas2552_din_source_enum,
+			    TAS2552_CFG_3, 3,
+			    tas2552_din_source_select);
+
+static const struct snd_kcontrol_new tas2552_snd_controls[] = {
+	SOC_SINGLE_TLV("Speaker Driver Playback Volume",
+			 TAS2552_PGA_GAIN, 0, 0x1f, 0, dac_tlv),
+	SOC_ENUM("DIN source", tas2552_din_source_enum),
+};
+
+static int tas2552_component_probe(struct snd_soc_component *component)
+{
+	struct tas2552_data *tas2552 = snd_soc_component_get_drvdata(component);
+	int ret;
+
+	tas2552->component = component;
+
+	ret = regulator_bulk_enable(ARRAY_SIZE(tas2552->supplies),
+				    tas2552->supplies);
+
+	if (ret != 0) {
+		dev_err(component->dev, "Failed to enable supplies: %d\n",
+			ret);
+		return ret;
+	}
+
+	gpiod_set_value(tas2552->enable_gpio, 1);
+
+	ret = pm_runtime_get_sync(component->dev);
+	if (ret < 0) {
+		dev_err(component->dev, "Enabling device failed: %d\n",
+			ret);
+		goto probe_fail;
+	}
+
+	snd_soc_component_update_bits(component, TAS2552_CFG_1, TAS2552_MUTE, TAS2552_MUTE);
+	snd_soc_component_write(component, TAS2552_CFG_3, TAS2552_I2S_OUT_SEL |
+					    TAS2552_DIN_SRC_SEL_AVG_L_R);
+	snd_soc_component_write(component, TAS2552_OUTPUT_DATA,
+		      TAS2552_PDM_DATA_SEL_V_I |
+		      TAS2552_R_DATA_OUT(TAS2552_DATA_OUT_V_DATA));
+	snd_soc_component_write(component, TAS2552_BOOST_APT_CTRL, TAS2552_APT_DELAY_200 |
+						     TAS2552_APT_THRESH_20_17);
+
+	snd_soc_component_write(component, TAS2552_CFG_2, TAS2552_BOOST_EN | TAS2552_APT_EN |
+					    TAS2552_LIM_EN);
+
+	return 0;
+
+probe_fail:
+	gpiod_set_value(tas2552->enable_gpio, 0);
+
+	regulator_bulk_disable(ARRAY_SIZE(tas2552->supplies),
+					tas2552->supplies);
+	return ret;
+}
+
+static void tas2552_component_remove(struct snd_soc_component *component)
+{
+	struct tas2552_data *tas2552 = snd_soc_component_get_drvdata(component);
+
+	pm_runtime_put(component->dev);
+
+	gpiod_set_value(tas2552->enable_gpio, 0);
+};
+
+#ifdef CONFIG_PM
+static int tas2552_suspend(struct snd_soc_component *component)
+{
+	struct tas2552_data *tas2552 = snd_soc_component_get_drvdata(component);
+	int ret;
+
+	ret = regulator_bulk_disable(ARRAY_SIZE(tas2552->supplies),
+					tas2552->supplies);
+
+	if (ret != 0)
+		dev_err(component->dev, "Failed to disable supplies: %d\n",
+			ret);
+	return ret;
+}
+
+static int tas2552_resume(struct snd_soc_component *component)
+{
+	struct tas2552_data *tas2552 = snd_soc_component_get_drvdata(component);
+	int ret;
+
+	ret = regulator_bulk_enable(ARRAY_SIZE(tas2552->supplies),
+				    tas2552->supplies);
+
+	if (ret != 0) {
+		dev_err(component->dev, "Failed to enable supplies: %d\n",
+			ret);
+	}
+
+	return ret;
+}
+#else
+#define tas2552_suspend NULL
+#define tas2552_resume NULL
+#endif
+
+static const struct snd_soc_component_driver soc_component_dev_tas2552 = {
+	.probe			= tas2552_component_probe,
+	.remove			= tas2552_component_remove,
+	.suspend		= tas2552_suspend,
+	.resume			= tas2552_resume,
+	.controls		= tas2552_snd_controls,
+	.num_controls		= ARRAY_SIZE(tas2552_snd_controls),
+	.dapm_widgets		= tas2552_dapm_widgets,
+	.num_dapm_widgets	= ARRAY_SIZE(tas2552_dapm_widgets),
+	.dapm_routes		= tas2552_audio_map,
+	.num_dapm_routes	= ARRAY_SIZE(tas2552_audio_map),
+	.idle_bias_on		= 1,
+	.endianness		= 1,
+	.non_legacy_dai_naming	= 1,
+};
+
+static const struct regmap_config tas2552_regmap_config = {
+	.reg_bits = 8,
+	.val_bits = 8,
+
+	.max_register = TAS2552_MAX_REG,
+	.reg_defaults = tas2552_reg_defs,
+	.num_reg_defaults = ARRAY_SIZE(tas2552_reg_defs),
+	.cache_type = REGCACHE_RBTREE,
+};
+
+static int tas2552_probe(struct i2c_client *client,
+			   const struct i2c_device_id *id)
+{
+	struct device *dev;
+	struct tas2552_data *data;
+	int ret;
+	int i;
+
+	dev = &client->dev;
+	data = devm_kzalloc(&client->dev, sizeof(*data), GFP_KERNEL);
+	if (data == NULL)
+		return -ENOMEM;
+
+	data->enable_gpio = devm_gpiod_get_optional(dev, "enable",
+						    GPIOD_OUT_LOW);
+	if (IS_ERR(data->enable_gpio))
+		return PTR_ERR(data->enable_gpio);
+
+	data->tas2552_client = client;
+	data->regmap = devm_regmap_init_i2c(client, &tas2552_regmap_config);
+	if (IS_ERR(data->regmap)) {
+		ret = PTR_ERR(data->regmap);
+		dev_err(&client->dev, "Failed to allocate register map: %d\n",
+			ret);
+		return ret;
+	}
+
+	for (i = 0; i < ARRAY_SIZE(data->supplies); i++)
+		data->supplies[i].supply = tas2552_supply_names[i];
+
+	ret = devm_regulator_bulk_get(dev, ARRAY_SIZE(data->supplies),
+				      data->supplies);
+	if (ret != 0) {
+		dev_err(dev, "Failed to request supplies: %d\n", ret);
+		return ret;
+	}
+
+	pm_runtime_set_active(&client->dev);
+	pm_runtime_set_autosuspend_delay(&client->dev, 1000);
+	pm_runtime_use_autosuspend(&client->dev);
+	pm_runtime_enable(&client->dev);
+	pm_runtime_mark_last_busy(&client->dev);
+	pm_runtime_put_sync_autosuspend(&client->dev);
+
+	dev_set_drvdata(&client->dev, data);
+
+	ret = devm_snd_soc_register_component(&client->dev,
+				      &soc_component_dev_tas2552,
+				      tas2552_dai, ARRAY_SIZE(tas2552_dai));
+	if (ret < 0)
+		dev_err(&client->dev, "Failed to register component: %d\n", ret);
+
+	return ret;
+}
+
+static int tas2552_i2c_remove(struct i2c_client *client)
+{
+	pm_runtime_disable(&client->dev);
+	return 0;
+}
+
+static const struct i2c_device_id tas2552_id[] = {
+	{ "tas2552", 0 },
+	{ }
+};
+MODULE_DEVICE_TABLE(i2c, tas2552_id);
+
+#if IS_ENABLED(CONFIG_OF)
+static const struct of_device_id tas2552_of_match[] = {
+	{ .compatible = "ti,tas2552", },
+	{},
+};
+MODULE_DEVICE_TABLE(of, tas2552_of_match);
+#endif
+
+static struct i2c_driver tas2552_i2c_driver = {
+	.driver = {
+		.name = "tas2552",
+		.of_match_table = of_match_ptr(tas2552_of_match),
+		.pm = &tas2552_pm,
+	},
+	.probe = tas2552_probe,
+	.remove = tas2552_i2c_remove,
+	.id_table = tas2552_id,
+};
+
+module_i2c_driver(tas2552_i2c_driver);
+
+MODULE_AUTHOR("Dan Muprhy <dmurphy@ti.com>");
+MODULE_DESCRIPTION("TAS2552 Audio amplifier driver");
+MODULE_LICENSE("GPL");