ASoC: nau8824: new driver

Add driver for NAU88L24.

Signed-off-by: John Hsu <KCHSU0@nuvoton.com>
Signed-off-by: John Hsu <supercraig0719@gmail.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

1 files changed, 1837 insertions, 0 deletions

diff --git a/sound/soc/codecs/nau8824.c b/sound/soc/codecs/nau8824.c
new file mode 100644
index 000000000000..18552ed43924
--- /dev/null
+++ b/sound/soc/codecs/nau8824.c
@@ -0,0 +1,1837 @@
+/*
+ * NAU88L24 ALSA SoC audio driver
+ *
+ * Copyright 2016 Nuvoton Technology Corp.
+ * Author: John Hsu <KCHSU0@nuvoton.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.
+ */
+
+#include <linux/module.h>
+#include <linux/delay.h>
+#include <linux/init.h>
+#include <linux/i2c.h>
+#include <linux/regmap.h>
+#include <linux/slab.h>
+#include <linux/clk.h>
+#include <linux/acpi.h>
+#include <linux/math64.h>
+#include <linux/semaphore.h>
+
+#include <sound/initval.h>
+#include <sound/tlv.h>
+#include <sound/core.h>
+#include <sound/pcm.h>
+#include <sound/pcm_params.h>
+#include <sound/soc.h>
+#include <sound/jack.h>
+
+#include "nau8824.h"
+
+
+static int nau8824_config_sysclk(struct nau8824 *nau8824,
+	int clk_id, unsigned int freq);
+static bool nau8824_is_jack_inserted(struct nau8824 *nau8824);
+
+/* the ADC threshold of headset */
+#define DMIC_CLK 3072000
+
+/* the ADC threshold of headset */
+#define HEADSET_SARADC_THD 0x80
+
+/* the parameter threshold of FLL */
+#define NAU_FREF_MAX 13500000
+#define NAU_FVCO_MAX 124000000
+#define NAU_FVCO_MIN 90000000
+
+/* scaling for mclk from sysclk_src output */
+static const struct nau8824_fll_attr mclk_src_scaling[] = {
+	{ 1, 0x0 },
+	{ 2, 0x2 },
+	{ 4, 0x3 },
+	{ 8, 0x4 },
+	{ 16, 0x5 },
+	{ 32, 0x6 },
+	{ 3, 0x7 },
+	{ 6, 0xa },
+	{ 12, 0xb },
+	{ 24, 0xc },
+};
+
+/* ratio for input clk freq */
+static const struct nau8824_fll_attr fll_ratio[] = {
+	{ 512000, 0x01 },
+	{ 256000, 0x02 },
+	{ 128000, 0x04 },
+	{ 64000, 0x08 },
+	{ 32000, 0x10 },
+	{ 8000, 0x20 },
+	{ 4000, 0x40 },
+};
+
+static const struct nau8824_fll_attr fll_pre_scalar[] = {
+	{ 1, 0x0 },
+	{ 2, 0x1 },
+	{ 4, 0x2 },
+	{ 8, 0x3 },
+};
+
+/* the maximum frequency of CLK_ADC and CLK_DAC */
+#define CLK_DA_AD_MAX 6144000
+
+/* over sampling rate */
+static const struct nau8824_osr_attr osr_dac_sel[] = {
+	{ 64, 2 },	/* OSR 64, SRC 1/4 */
+	{ 256, 0 },	/* OSR 256, SRC 1 */
+	{ 128, 1 },	/* OSR 128, SRC 1/2 */
+	{ 0, 0 },
+	{ 32, 3 },	/* OSR 32, SRC 1/8 */
+};
+
+static const struct nau8824_osr_attr osr_adc_sel[] = {
+	{ 32, 3 },	/* OSR 32, SRC 1/8 */
+	{ 64, 2 },	/* OSR 64, SRC 1/4 */
+	{ 128, 1 },	/* OSR 128, SRC 1/2 */
+	{ 256, 0 },	/* OSR 256, SRC 1 */
+};
+
+static const struct reg_default nau8824_reg_defaults[] = {
+	{ NAU8824_REG_ENA_CTRL, 0x0000 },
+	{ NAU8824_REG_CLK_GATING_ENA, 0x0000 },
+	{ NAU8824_REG_CLK_DIVIDER, 0x0000 },
+	{ NAU8824_REG_FLL1, 0x0000 },
+	{ NAU8824_REG_FLL2, 0x3126 },
+	{ NAU8824_REG_FLL3, 0x0008 },
+	{ NAU8824_REG_FLL4, 0x0010 },
+	{ NAU8824_REG_FLL5, 0xC000 },
+	{ NAU8824_REG_FLL6, 0x6000 },
+	{ NAU8824_REG_FLL_VCO_RSV, 0xF13C },
+	{ NAU8824_REG_JACK_DET_CTRL, 0x0000 },
+	{ NAU8824_REG_INTERRUPT_SETTING_1, 0x0000 },
+	{ NAU8824_REG_IRQ, 0x0000 },
+	{ NAU8824_REG_CLEAR_INT_REG, 0x0000 },
+	{ NAU8824_REG_INTERRUPT_SETTING, 0x1000 },
+	{ NAU8824_REG_SAR_ADC, 0x0015 },
+	{ NAU8824_REG_VDET_COEFFICIENT, 0x0110 },
+	{ NAU8824_REG_VDET_THRESHOLD_1, 0x0000 },
+	{ NAU8824_REG_VDET_THRESHOLD_2, 0x0000 },
+	{ NAU8824_REG_VDET_THRESHOLD_3, 0x0000 },
+	{ NAU8824_REG_VDET_THRESHOLD_4, 0x0000 },
+	{ NAU8824_REG_GPIO_SEL, 0x0000 },
+	{ NAU8824_REG_PORT0_I2S_PCM_CTRL_1, 0x000B },
+	{ NAU8824_REG_PORT0_I2S_PCM_CTRL_2, 0x0010 },
+	{ NAU8824_REG_PORT0_LEFT_TIME_SLOT, 0x0000 },
+	{ NAU8824_REG_PORT0_RIGHT_TIME_SLOT, 0x0000 },
+	{ NAU8824_REG_TDM_CTRL, 0x0000 },
+	{ NAU8824_REG_ADC_HPF_FILTER, 0x0000 },
+	{ NAU8824_REG_ADC_FILTER_CTRL, 0x0002 },
+	{ NAU8824_REG_DAC_FILTER_CTRL_1, 0x0000 },
+	{ NAU8824_REG_DAC_FILTER_CTRL_2, 0x0000 },
+	{ NAU8824_REG_NOTCH_FILTER_1, 0x0000 },
+	{ NAU8824_REG_NOTCH_FILTER_2, 0x0000 },
+	{ NAU8824_REG_EQ1_LOW, 0x112C },
+	{ NAU8824_REG_EQ2_EQ3, 0x2C2C },
+	{ NAU8824_REG_EQ4_EQ5, 0x2C2C },
+	{ NAU8824_REG_ADC_CH0_DGAIN_CTRL, 0x0100 },
+	{ NAU8824_REG_ADC_CH1_DGAIN_CTRL, 0x0100 },
+	{ NAU8824_REG_ADC_CH2_DGAIN_CTRL, 0x0100 },
+	{ NAU8824_REG_ADC_CH3_DGAIN_CTRL, 0x0100 },
+	{ NAU8824_REG_DAC_MUTE_CTRL, 0x0000 },
+	{ NAU8824_REG_DAC_CH0_DGAIN_CTRL, 0x0100 },
+	{ NAU8824_REG_DAC_CH1_DGAIN_CTRL, 0x0100 },
+	{ NAU8824_REG_ADC_TO_DAC_ST, 0x0000 },
+	{ NAU8824_REG_DRC_KNEE_IP12_ADC_CH01, 0x1486 },
+	{ NAU8824_REG_DRC_KNEE_IP34_ADC_CH01, 0x0F12 },
+	{ NAU8824_REG_DRC_SLOPE_ADC_CH01, 0x25FF },
+	{ NAU8824_REG_DRC_ATKDCY_ADC_CH01, 0x3457 },
+	{ NAU8824_REG_DRC_KNEE_IP12_ADC_CH23, 0x1486 },
+	{ NAU8824_REG_DRC_KNEE_IP34_ADC_CH23, 0x0F12 },
+	{ NAU8824_REG_DRC_SLOPE_ADC_CH23, 0x25FF },
+	{ NAU8824_REG_DRC_ATKDCY_ADC_CH23, 0x3457 },
+	{ NAU8824_REG_DRC_GAINL_ADC0, 0x0200 },
+	{ NAU8824_REG_DRC_GAINL_ADC1, 0x0200 },
+	{ NAU8824_REG_DRC_GAINL_ADC2, 0x0200 },
+	{ NAU8824_REG_DRC_GAINL_ADC3, 0x0200 },
+	{ NAU8824_REG_DRC_KNEE_IP12_DAC, 0x1486 },
+	{ NAU8824_REG_DRC_KNEE_IP34_DAC, 0x0F12 },
+	{ NAU8824_REG_DRC_SLOPE_DAC, 0x25F9 },
+	{ NAU8824_REG_DRC_ATKDCY_DAC, 0x3457 },
+	{ NAU8824_REG_DRC_GAIN_DAC_CH0, 0x0200 },
+	{ NAU8824_REG_DRC_GAIN_DAC_CH1, 0x0200 },
+	{ NAU8824_REG_MODE, 0x0000 },
+	{ NAU8824_REG_MODE1, 0x0000 },
+	{ NAU8824_REG_MODE2, 0x0000 },
+	{ NAU8824_REG_CLASSG, 0x0000 },
+	{ NAU8824_REG_OTP_EFUSE, 0x0000 },
+	{ NAU8824_REG_OTPDOUT_1, 0x0000 },
+	{ NAU8824_REG_OTPDOUT_2, 0x0000 },
+	{ NAU8824_REG_MISC_CTRL, 0x0000 },
+	{ NAU8824_REG_I2C_TIMEOUT, 0xEFFF },
+	{ NAU8824_REG_TEST_MODE, 0x0000 },
+	{ NAU8824_REG_I2C_DEVICE_ID, 0x1AF1 },
+	{ NAU8824_REG_SAR_ADC_DATA_OUT, 0x00FF },
+	{ NAU8824_REG_BIAS_ADJ, 0x0000 },
+	{ NAU8824_REG_PGA_GAIN, 0x0000 },
+	{ NAU8824_REG_TRIM_SETTINGS, 0x0000 },
+	{ NAU8824_REG_ANALOG_CONTROL_1, 0x0000 },
+	{ NAU8824_REG_ANALOG_CONTROL_2, 0x0000 },
+	{ NAU8824_REG_ENABLE_LO, 0x0000 },
+	{ NAU8824_REG_GAIN_LO, 0x0000 },
+	{ NAU8824_REG_CLASSD_GAIN_1, 0x0000 },
+	{ NAU8824_REG_CLASSD_GAIN_2, 0x0000 },
+	{ NAU8824_REG_ANALOG_ADC_1, 0x0011 },
+	{ NAU8824_REG_ANALOG_ADC_2, 0x0020 },
+	{ NAU8824_REG_RDAC, 0x0008 },
+	{ NAU8824_REG_MIC_BIAS, 0x0006 },
+	{ NAU8824_REG_HS_VOLUME_CONTROL, 0x0000 },
+	{ NAU8824_REG_BOOST, 0x0000 },
+	{ NAU8824_REG_FEPGA, 0x0000 },
+	{ NAU8824_REG_FEPGA_II, 0x0000 },
+	{ NAU8824_REG_FEPGA_SE, 0x0000 },
+	{ NAU8824_REG_FEPGA_ATTENUATION, 0x0000 },
+	{ NAU8824_REG_ATT_PORT0, 0x0000 },
+	{ NAU8824_REG_ATT_PORT1, 0x0000 },
+	{ NAU8824_REG_POWER_UP_CONTROL, 0x0000 },
+	{ NAU8824_REG_CHARGE_PUMP_CONTROL, 0x0300 },
+	{ NAU8824_REG_CHARGE_PUMP_INPUT, 0x0013 },
+};
+
+static int nau8824_sema_acquire(struct nau8824 *nau8824, long timeout)
+{
+	int ret;
+
+	if (timeout) {
+		ret = down_timeout(&nau8824->jd_sem, timeout);
+		if (ret < 0)
+			dev_warn(nau8824->dev, "Acquire semaphone timeout\n");
+	} else {
+		ret = down_interruptible(&nau8824->jd_sem);
+		if (ret < 0)
+			dev_warn(nau8824->dev, "Acquire semaphone fail\n");
+	}
+
+	return ret;
+}
+
+static inline void nau8824_sema_release(struct nau8824 *nau8824)
+{
+	up(&nau8824->jd_sem);
+}
+
+static bool nau8824_readable_reg(struct device *dev, unsigned int reg)
+{
+	switch (reg) {
+	case NAU8824_REG_ENA_CTRL ... NAU8824_REG_FLL_VCO_RSV:
+	case NAU8824_REG_JACK_DET_CTRL:
+	case NAU8824_REG_INTERRUPT_SETTING_1:
+	case NAU8824_REG_IRQ:
+	case NAU8824_REG_CLEAR_INT_REG ... NAU8824_REG_VDET_THRESHOLD_4:
+	case NAU8824_REG_GPIO_SEL:
+	case NAU8824_REG_PORT0_I2S_PCM_CTRL_1 ... NAU8824_REG_TDM_CTRL:
+	case NAU8824_REG_ADC_HPF_FILTER ... NAU8824_REG_EQ4_EQ5:
+	case NAU8824_REG_ADC_CH0_DGAIN_CTRL ... NAU8824_REG_ADC_TO_DAC_ST:
+	case NAU8824_REG_DRC_KNEE_IP12_ADC_CH01 ... NAU8824_REG_DRC_GAINL_ADC3:
+	case NAU8824_REG_DRC_KNEE_IP12_DAC ... NAU8824_REG_DRC_GAIN_DAC_CH1:
+	case NAU8824_REG_CLASSG ... NAU8824_REG_OTP_EFUSE:
+	case NAU8824_REG_OTPDOUT_1 ... NAU8824_REG_OTPDOUT_2:
+	case NAU8824_REG_I2C_TIMEOUT:
+	case NAU8824_REG_I2C_DEVICE_ID ... NAU8824_REG_SAR_ADC_DATA_OUT:
+	case NAU8824_REG_BIAS_ADJ ... NAU8824_REG_CLASSD_GAIN_2:
+	case NAU8824_REG_ANALOG_ADC_1 ... NAU8824_REG_ATT_PORT1:
+	case NAU8824_REG_POWER_UP_CONTROL ... NAU8824_REG_CHARGE_PUMP_INPUT:
+		return true;
+	default:
+		return false;
+	}
+
+}
+
+static bool nau8824_writeable_reg(struct device *dev, unsigned int reg)
+{
+	switch (reg) {
+	case NAU8824_REG_RESET ... NAU8824_REG_FLL_VCO_RSV:
+	case NAU8824_REG_JACK_DET_CTRL:
+	case NAU8824_REG_INTERRUPT_SETTING_1:
+	case NAU8824_REG_CLEAR_INT_REG ... NAU8824_REG_VDET_THRESHOLD_4:
+	case NAU8824_REG_GPIO_SEL:
+	case NAU8824_REG_PORT0_I2S_PCM_CTRL_1 ... NAU8824_REG_TDM_CTRL:
+	case NAU8824_REG_ADC_HPF_FILTER ... NAU8824_REG_EQ4_EQ5:
+	case NAU8824_REG_ADC_CH0_DGAIN_CTRL ... NAU8824_REG_ADC_TO_DAC_ST:
+	case NAU8824_REG_DRC_KNEE_IP12_ADC_CH01:
+	case NAU8824_REG_DRC_KNEE_IP34_ADC_CH01:
+	case NAU8824_REG_DRC_SLOPE_ADC_CH01:
+	case NAU8824_REG_DRC_ATKDCY_ADC_CH01:
+	case NAU8824_REG_DRC_KNEE_IP12_ADC_CH23:
+	case NAU8824_REG_DRC_KNEE_IP34_ADC_CH23:
+	case NAU8824_REG_DRC_SLOPE_ADC_CH23:
+	case NAU8824_REG_DRC_ATKDCY_ADC_CH23:
+	case NAU8824_REG_DRC_KNEE_IP12_DAC ... NAU8824_REG_DRC_ATKDCY_DAC:
+	case NAU8824_REG_CLASSG ... NAU8824_REG_OTP_EFUSE:
+	case NAU8824_REG_I2C_TIMEOUT:
+	case NAU8824_REG_BIAS_ADJ ... NAU8824_REG_CLASSD_GAIN_2:
+	case NAU8824_REG_ANALOG_ADC_1 ... NAU8824_REG_ATT_PORT1:
+	case NAU8824_REG_POWER_UP_CONTROL ... NAU8824_REG_CHARGE_PUMP_CONTROL:
+		return true;
+	default:
+		return false;
+	}
+}
+
+static bool nau8824_volatile_reg(struct device *dev, unsigned int reg)
+{
+	switch (reg) {
+	case NAU8824_REG_RESET:
+	case NAU8824_REG_IRQ ... NAU8824_REG_CLEAR_INT_REG:
+	case NAU8824_REG_DRC_GAINL_ADC0 ... NAU8824_REG_DRC_GAINL_ADC3:
+	case NAU8824_REG_DRC_GAIN_DAC_CH0 ... NAU8824_REG_DRC_GAIN_DAC_CH1:
+	case NAU8824_REG_OTPDOUT_1 ... NAU8824_REG_OTPDOUT_2:
+	case NAU8824_REG_I2C_DEVICE_ID ... NAU8824_REG_SAR_ADC_DATA_OUT:
+	case NAU8824_REG_CHARGE_PUMP_INPUT:
+		return true;
+	default:
+		return false;
+	}
+}
+
+static const char * const nau8824_companding[] = {
+	"Off", "NC", "u-law", "A-law" };
+
+static const struct soc_enum nau8824_companding_adc_enum =
+	SOC_ENUM_SINGLE(NAU8824_REG_PORT0_I2S_PCM_CTRL_1, 12,
+		ARRAY_SIZE(nau8824_companding), nau8824_companding);
+
+static const struct soc_enum nau8824_companding_dac_enum =
+	SOC_ENUM_SINGLE(NAU8824_REG_PORT0_I2S_PCM_CTRL_1, 14,
+		ARRAY_SIZE(nau8824_companding), nau8824_companding);
+
+static const char * const nau8824_adc_decimation[] = {
+	"32", "64", "128", "256" };
+
+static const struct soc_enum nau8824_adc_decimation_enum =
+	SOC_ENUM_SINGLE(NAU8824_REG_ADC_FILTER_CTRL, 0,
+		ARRAY_SIZE(nau8824_adc_decimation), nau8824_adc_decimation);
+
+static const char * const nau8824_dac_oversampl[] = {
+	"64", "256", "128", "", "32" };
+
+static const struct soc_enum nau8824_dac_oversampl_enum =
+	SOC_ENUM_SINGLE(NAU8824_REG_DAC_FILTER_CTRL_1, 0,
+		ARRAY_SIZE(nau8824_dac_oversampl), nau8824_dac_oversampl);
+
+static const char * const nau8824_input_channel[] = {
+	"Input CH0", "Input CH1", "Input CH2", "Input CH3" };
+
+static const struct soc_enum nau8824_adc_ch0_enum =
+	SOC_ENUM_SINGLE(NAU8824_REG_ADC_CH0_DGAIN_CTRL, 9,
+		ARRAY_SIZE(nau8824_input_channel), nau8824_input_channel);
+
+static const struct soc_enum nau8824_adc_ch1_enum =
+	SOC_ENUM_SINGLE(NAU8824_REG_ADC_CH1_DGAIN_CTRL, 9,
+		ARRAY_SIZE(nau8824_input_channel), nau8824_input_channel);
+
+static const struct soc_enum nau8824_adc_ch2_enum =
+	SOC_ENUM_SINGLE(NAU8824_REG_ADC_CH2_DGAIN_CTRL, 9,
+		ARRAY_SIZE(nau8824_input_channel), nau8824_input_channel);
+
+static const struct soc_enum nau8824_adc_ch3_enum =
+	SOC_ENUM_SINGLE(NAU8824_REG_ADC_CH3_DGAIN_CTRL, 9,
+		ARRAY_SIZE(nau8824_input_channel), nau8824_input_channel);
+
+static const char * const nau8824_tdm_slot[] = {
+	"Slot 0", "Slot 1", "Slot 2", "Slot 3" };
+
+static const struct soc_enum nau8824_dac_left_sel_enum =
+	SOC_ENUM_SINGLE(NAU8824_REG_TDM_CTRL, 6,
+		ARRAY_SIZE(nau8824_tdm_slot), nau8824_tdm_slot);
+
+static const struct soc_enum nau8824_dac_right_sel_enum =
+	SOC_ENUM_SINGLE(NAU8824_REG_TDM_CTRL, 4,
+		ARRAY_SIZE(nau8824_tdm_slot), nau8824_tdm_slot);
+
+static const DECLARE_TLV_DB_MINMAX_MUTE(spk_vol_tlv, 0, 2400);
+static const DECLARE_TLV_DB_MINMAX(hp_vol_tlv, -3000, 0);
+static const DECLARE_TLV_DB_SCALE(mic_vol_tlv, 0, 200, 0);
+static const DECLARE_TLV_DB_SCALE(dmic_vol_tlv, -12800, 50, 0);
+
+static const struct snd_kcontrol_new nau8824_snd_controls[] = {
+	SOC_ENUM("ADC Companding", nau8824_companding_adc_enum),
+	SOC_ENUM("DAC Companding", nau8824_companding_dac_enum),
+
+	SOC_ENUM("ADC Decimation Rate", nau8824_adc_decimation_enum),
+	SOC_ENUM("DAC Oversampling Rate", nau8824_dac_oversampl_enum),
+
+	SOC_SINGLE_TLV("Speaker Right from DACR Volume",
+		NAU8824_REG_CLASSD_GAIN_1, 8, 0x1f, 0, spk_vol_tlv),
+	SOC_SINGLE_TLV("Speaker Left from DACL Volume",
+		NAU8824_REG_CLASSD_GAIN_2, 0, 0x1f, 0, spk_vol_tlv),
+	SOC_SINGLE_TLV("Speaker Left from DACR Volume",
+		NAU8824_REG_CLASSD_GAIN_1, 0, 0x1f, 0, spk_vol_tlv),
+	SOC_SINGLE_TLV("Speaker Right from DACL Volume",
+		NAU8824_REG_CLASSD_GAIN_2, 8, 0x1f, 0, spk_vol_tlv),
+
+	SOC_SINGLE_TLV("Headphone Right from DACR Volume",
+		NAU8824_REG_ATT_PORT0, 8, 0x1f, 0, hp_vol_tlv),
+	SOC_SINGLE_TLV("Headphone Left from DACL Volume",
+		NAU8824_REG_ATT_PORT0, 0, 0x1f, 0, hp_vol_tlv),
+	SOC_SINGLE_TLV("Headphone Right from DACL Volume",
+		NAU8824_REG_ATT_PORT1, 8, 0x1f, 0, hp_vol_tlv),
+	SOC_SINGLE_TLV("Headphone Left from DACR Volume",
+		NAU8824_REG_ATT_PORT1, 0, 0x1f, 0, hp_vol_tlv),
+
+	SOC_SINGLE_TLV("Mic1 Volume", NAU8824_REG_FEPGA_II,
+		NAU8824_FEPGA_GAINL_SFT, 0x12, 0, mic_vol_tlv),
+	SOC_SINGLE_TLV("Mic2 Volume", NAU8824_REG_FEPGA_II,
+		NAU8824_FEPGA_GAINR_SFT, 0x12, 0, mic_vol_tlv),
+
+	SOC_SINGLE_TLV("DMIC1 Volume", NAU8824_REG_ADC_CH0_DGAIN_CTRL,
+		0, 0x164, 0, dmic_vol_tlv),
+	SOC_SINGLE_TLV("DMIC2 Volume", NAU8824_REG_ADC_CH1_DGAIN_CTRL,
+		0, 0x164, 0, dmic_vol_tlv),
+	SOC_SINGLE_TLV("DMIC3 Volume", NAU8824_REG_ADC_CH2_DGAIN_CTRL,
+		0, 0x164, 0, dmic_vol_tlv),
+	SOC_SINGLE_TLV("DMIC4 Volume", NAU8824_REG_ADC_CH3_DGAIN_CTRL,
+		0, 0x164, 0, dmic_vol_tlv),
+
+	SOC_ENUM("ADC CH0 Select", nau8824_adc_ch0_enum),
+	SOC_ENUM("ADC CH1 Select", nau8824_adc_ch1_enum),
+	SOC_ENUM("ADC CH2 Select", nau8824_adc_ch2_enum),
+	SOC_ENUM("ADC CH3 Select", nau8824_adc_ch3_enum),
+
+	SOC_SINGLE("ADC CH0 TX Switch", NAU8824_REG_TDM_CTRL, 0, 1, 0),
+	SOC_SINGLE("ADC CH1 TX Switch", NAU8824_REG_TDM_CTRL, 1, 1, 0),
+	SOC_SINGLE("ADC CH2 TX Switch", NAU8824_REG_TDM_CTRL, 2, 1, 0),
+	SOC_SINGLE("ADC CH3 TX Switch", NAU8824_REG_TDM_CTRL, 3, 1, 0),
+
+	SOC_ENUM("DACL Channel Source", nau8824_dac_left_sel_enum),
+	SOC_ENUM("DACR Channel Source", nau8824_dac_right_sel_enum),
+
+	SOC_SINGLE("DACL LR Mix", NAU8824_REG_DAC_MUTE_CTRL, 0, 1, 0),
+	SOC_SINGLE("DACR LR Mix", NAU8824_REG_DAC_MUTE_CTRL, 1, 1, 0),
+};
+
+static int nau8824_output_dac_event(struct snd_soc_dapm_widget *w,
+	struct snd_kcontrol *kcontrol, int event)
+{
+	struct snd_soc_codec *codec = snd_soc_dapm_to_codec(w->dapm);
+	struct nau8824 *nau8824 = snd_soc_codec_get_drvdata(codec);
+
+	switch (event) {
+	case SND_SOC_DAPM_PRE_PMU:
+		/* Disables the TESTDAC to let DAC signal pass through. */
+		regmap_update_bits(nau8824->regmap, NAU8824_REG_ENABLE_LO,
+			NAU8824_TEST_DAC_EN, 0);
+		break;
+	case SND_SOC_DAPM_POST_PMD:
+		regmap_update_bits(nau8824->regmap, NAU8824_REG_ENABLE_LO,
+			NAU8824_TEST_DAC_EN, NAU8824_TEST_DAC_EN);
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+static int nau8824_spk_event(struct snd_soc_dapm_widget *w,
+	struct snd_kcontrol *kcontrol, int event)
+{
+	struct snd_soc_codec *codec = snd_soc_dapm_to_codec(w->dapm);
+	struct nau8824 *nau8824 = snd_soc_codec_get_drvdata(codec);
+
+	switch (event) {
+	case SND_SOC_DAPM_PRE_PMU:
+		regmap_update_bits(nau8824->regmap,
+			NAU8824_REG_ANALOG_CONTROL_2,
+			NAU8824_CLASSD_CLAMP_DIS, NAU8824_CLASSD_CLAMP_DIS);
+		break;
+	case SND_SOC_DAPM_POST_PMD:
+		regmap_update_bits(nau8824->regmap,
+			NAU8824_REG_ANALOG_CONTROL_2,
+			NAU8824_CLASSD_CLAMP_DIS, 0);
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+static int nau8824_pump_event(struct snd_soc_dapm_widget *w,
+	struct snd_kcontrol *kcontrol, int event)
+{
+	struct snd_soc_codec *codec = snd_soc_dapm_to_codec(w->dapm);
+	struct nau8824 *nau8824 = snd_soc_codec_get_drvdata(codec);
+
+	switch (event) {
+	case SND_SOC_DAPM_POST_PMU:
+		/* Prevent startup click by letting charge pump to ramp up */
+		msleep(10);
+		regmap_update_bits(nau8824->regmap,
+			NAU8824_REG_CHARGE_PUMP_CONTROL,
+			NAU8824_JAMNODCLOW, NAU8824_JAMNODCLOW);
+		break;
+	case SND_SOC_DAPM_PRE_PMD:
+		regmap_update_bits(nau8824->regmap,
+			NAU8824_REG_CHARGE_PUMP_CONTROL,
+			NAU8824_JAMNODCLOW, 0);
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+static int system_clock_control(struct snd_soc_dapm_widget *w,
+		struct snd_kcontrol *k, int  event)
+{
+	struct snd_soc_codec *codec = snd_soc_dapm_to_codec(w->dapm);
+	struct nau8824 *nau8824 = snd_soc_codec_get_drvdata(codec);
+
+	if (SND_SOC_DAPM_EVENT_OFF(event)) {
+		/* Set clock source to disable or internal clock before the
+		 * playback or capture end. Codec needs clock for Jack
+		 * detection and button press if jack inserted; otherwise,
+		 * the clock should be closed.
+		 */
+		if (nau8824_is_jack_inserted(nau8824)) {
+			nau8824_config_sysclk(nau8824,
+				NAU8824_CLK_INTERNAL, 0);
+		} else {
+			nau8824_config_sysclk(nau8824, NAU8824_CLK_DIS, 0);
+		}
+	}
+	return 0;
+}
+
+static int dmic_clock_control(struct snd_soc_dapm_widget *w,
+		struct snd_kcontrol *k, int  event)
+{
+	struct snd_soc_codec *codec = snd_soc_dapm_to_codec(w->dapm);
+	struct nau8824 *nau8824 = snd_soc_codec_get_drvdata(codec);
+	int src;
+
+	/* The DMIC clock is gotten from system clock (256fs) divided by
+	 * DMIC_SRC (1, 2, 4, 8, 16, 32). The clock has to be equal or
+	 * less than 3.072 MHz.
+	 */
+	for (src = 0; src < 5; src++) {
+		if ((0x1 << (8 - src)) * nau8824->fs <= DMIC_CLK)
+			break;
+	}
+	dev_dbg(nau8824->dev, "dmic src %d for mclk %d\n", src, nau8824->fs * 256);
+	regmap_update_bits(nau8824->regmap, NAU8824_REG_CLK_DIVIDER,
+		NAU8824_CLK_DMIC_SRC_MASK, (src << NAU8824_CLK_DMIC_SRC_SFT));
+
+	return 0;
+}
+
+static const struct snd_kcontrol_new nau8824_adc_ch0_dmic =
+	SOC_DAPM_SINGLE("Switch", NAU8824_REG_ENA_CTRL,
+		NAU8824_ADC_CH0_DMIC_SFT, 1, 0);
+
+static const struct snd_kcontrol_new nau8824_adc_ch1_dmic =
+	SOC_DAPM_SINGLE("Switch", NAU8824_REG_ENA_CTRL,
+		NAU8824_ADC_CH1_DMIC_SFT, 1, 0);
+
+static const struct snd_kcontrol_new nau8824_adc_ch2_dmic =
+	SOC_DAPM_SINGLE("Switch", NAU8824_REG_ENA_CTRL,
+		NAU8824_ADC_CH2_DMIC_SFT, 1, 0);
+
+static const struct snd_kcontrol_new nau8824_adc_ch3_dmic =
+	SOC_DAPM_SINGLE("Switch", NAU8824_REG_ENA_CTRL,
+		NAU8824_ADC_CH3_DMIC_SFT, 1, 0);
+
+static const struct snd_kcontrol_new nau8824_adc_left_mixer[] = {
+	SOC_DAPM_SINGLE("MIC Switch", NAU8824_REG_FEPGA,
+		NAU8824_FEPGA_MODEL_MIC1_SFT, 1, 0),
+	SOC_DAPM_SINGLE("HSMIC Switch", NAU8824_REG_FEPGA,
+		NAU8824_FEPGA_MODEL_HSMIC_SFT, 1, 0),
+};
+
+static const struct snd_kcontrol_new nau8824_adc_right_mixer[] = {
+	SOC_DAPM_SINGLE("MIC Switch", NAU8824_REG_FEPGA,
+		NAU8824_FEPGA_MODER_MIC2_SFT, 1, 0),
+	SOC_DAPM_SINGLE("HSMIC Switch", NAU8824_REG_FEPGA,
+		NAU8824_FEPGA_MODER_HSMIC_SFT, 1, 0),
+};
+
+static const struct snd_kcontrol_new nau8824_hp_left_mixer[] = {
+	SOC_DAPM_SINGLE("DAC Right Switch", NAU8824_REG_ENABLE_LO,
+		NAU8824_DACR_HPL_EN_SFT, 1, 0),
+	SOC_DAPM_SINGLE("DAC Left Switch", NAU8824_REG_ENABLE_LO,
+		NAU8824_DACL_HPL_EN_SFT, 1, 0),
+};
+
+static const struct snd_kcontrol_new nau8824_hp_right_mixer[] = {
+	SOC_DAPM_SINGLE("DAC Left Switch", NAU8824_REG_ENABLE_LO,
+		NAU8824_DACL_HPR_EN_SFT, 1, 0),
+	SOC_DAPM_SINGLE("DAC Right Switch", NAU8824_REG_ENABLE_LO,
+		NAU8824_DACR_HPR_EN_SFT, 1, 0),
+};
+
+static const char * const nau8824_dac_src[] = { "DACL", "DACR" };
+
+static SOC_ENUM_SINGLE_DECL(
+	nau8824_dacl_enum, NAU8824_REG_DAC_CH0_DGAIN_CTRL,
+	NAU8824_DAC_CH0_SEL_SFT, nau8824_dac_src);
+
+static SOC_ENUM_SINGLE_DECL(
+	nau8824_dacr_enum, NAU8824_REG_DAC_CH1_DGAIN_CTRL,
+	NAU8824_DAC_CH1_SEL_SFT, nau8824_dac_src);
+
+static const struct snd_kcontrol_new nau8824_dacl_mux =
+	SOC_DAPM_ENUM("DACL Source", nau8824_dacl_enum);
+
+static const struct snd_kcontrol_new nau8824_dacr_mux =
+	SOC_DAPM_ENUM("DACR Source", nau8824_dacr_enum);
+
+
+static const struct snd_soc_dapm_widget nau8824_dapm_widgets[] = {
+	SND_SOC_DAPM_SUPPLY("System Clock", SND_SOC_NOPM, 0, 0,
+			system_clock_control, SND_SOC_DAPM_POST_PMD),
+
+	SND_SOC_DAPM_INPUT("HSMIC1"),
+	SND_SOC_DAPM_INPUT("HSMIC2"),
+	SND_SOC_DAPM_INPUT("MIC1"),
+	SND_SOC_DAPM_INPUT("MIC2"),
+	SND_SOC_DAPM_INPUT("DMIC1"),
+	SND_SOC_DAPM_INPUT("DMIC2"),
+	SND_SOC_DAPM_INPUT("DMIC3"),
+	SND_SOC_DAPM_INPUT("DMIC4"),
+
+	SND_SOC_DAPM_SUPPLY("SAR", NAU8824_REG_SAR_ADC,
+		NAU8824_SAR_ADC_EN_SFT, 0, NULL, 0),
+	SND_SOC_DAPM_SUPPLY("MICBIAS", NAU8824_REG_MIC_BIAS,
+		NAU8824_MICBIAS_POWERUP_SFT, 0, NULL, 0),
+	SND_SOC_DAPM_SUPPLY("DMIC12 Power", NAU8824_REG_BIAS_ADJ,
+		NAU8824_DMIC1_EN_SFT, 0, NULL, 0),
+	SND_SOC_DAPM_SUPPLY("DMIC34 Power", NAU8824_REG_BIAS_ADJ,
+		NAU8824_DMIC2_EN_SFT, 0, NULL, 0),
+	SND_SOC_DAPM_SUPPLY("DMIC Clock", SND_SOC_NOPM, 0, 0,
+		dmic_clock_control, SND_SOC_DAPM_POST_PMU),
+
+	SND_SOC_DAPM_SWITCH("DMIC1 Enable", SND_SOC_NOPM,
+		0, 0, &nau8824_adc_ch0_dmic),
+	SND_SOC_DAPM_SWITCH("DMIC2 Enable", SND_SOC_NOPM,
+		0, 0, &nau8824_adc_ch1_dmic),
+	SND_SOC_DAPM_SWITCH("DMIC3 Enable", SND_SOC_NOPM,
+		0, 0, &nau8824_adc_ch2_dmic),
+	SND_SOC_DAPM_SWITCH("DMIC4 Enable", SND_SOC_NOPM,
+		0, 0, &nau8824_adc_ch3_dmic),
+
+	SND_SOC_DAPM_MIXER("Left ADC", NAU8824_REG_POWER_UP_CONTROL,
+		12, 0, nau8824_adc_left_mixer,
+		ARRAY_SIZE(nau8824_adc_left_mixer)),
+	SND_SOC_DAPM_MIXER("Right ADC", NAU8824_REG_POWER_UP_CONTROL,
+		13, 0, nau8824_adc_right_mixer,
+		ARRAY_SIZE(nau8824_adc_right_mixer)),
+
+	SND_SOC_DAPM_ADC("ADCL", NULL, NAU8824_REG_ANALOG_ADC_2,
+		NAU8824_ADCL_EN_SFT, 0),
+	SND_SOC_DAPM_ADC("ADCR", NULL, NAU8824_REG_ANALOG_ADC_2,
+		NAU8824_ADCR_EN_SFT, 0),
+
+	SND_SOC_DAPM_AIF_OUT("AIFTX", "HiFi Capture", 0, SND_SOC_NOPM, 0, 0),
+	SND_SOC_DAPM_AIF_IN("AIFRX", "HiFi Playback", 0, SND_SOC_NOPM, 0, 0),
+
+	SND_SOC_DAPM_DAC("DACL", NULL, NAU8824_REG_RDAC,
+		NAU8824_DACL_EN_SFT, 0),
+	SND_SOC_DAPM_SUPPLY("DACL Clock", NAU8824_REG_RDAC,
+		NAU8824_DACL_CLK_SFT, 0, NULL, 0),
+	SND_SOC_DAPM_DAC("DACR", NULL, NAU8824_REG_RDAC,
+		NAU8824_DACR_EN_SFT, 0),
+	SND_SOC_DAPM_SUPPLY("DACR Clock", NAU8824_REG_RDAC,
+		NAU8824_DACR_CLK_SFT, 0, NULL, 0),
+
+	SND_SOC_DAPM_MUX("DACL Mux", SND_SOC_NOPM, 0, 0, &nau8824_dacl_mux),
+	SND_SOC_DAPM_MUX("DACR Mux", SND_SOC_NOPM, 0, 0, &nau8824_dacr_mux),
+
+	SND_SOC_DAPM_PGA_S("Output DACL", 0, NAU8824_REG_CHARGE_PUMP_CONTROL,
+		8, 1, nau8824_output_dac_event,
+		SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),
+	SND_SOC_DAPM_PGA_S("Output DACR", 0, NAU8824_REG_CHARGE_PUMP_CONTROL,
+		9, 1, nau8824_output_dac_event,
+		SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),
+
+	SND_SOC_DAPM_PGA_S("ClassD", 0, NAU8824_REG_CLASSD_GAIN_1,
+		NAU8824_CLASSD_EN_SFT, 0, nau8824_spk_event,
+		SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),
+
+	SND_SOC_DAPM_MIXER("Left Headphone", NAU8824_REG_CLASSG,
+		NAU8824_CLASSG_LDAC_EN_SFT, 0, nau8824_hp_left_mixer,
+		ARRAY_SIZE(nau8824_hp_left_mixer)),
+	SND_SOC_DAPM_MIXER("Right Headphone", NAU8824_REG_CLASSG,
+		NAU8824_CLASSG_RDAC_EN_SFT, 0, nau8824_hp_right_mixer,
+		ARRAY_SIZE(nau8824_hp_right_mixer)),
+	SND_SOC_DAPM_PGA_S("Charge Pump", 1, NAU8824_REG_CHARGE_PUMP_CONTROL,
+		NAU8824_CHARGE_PUMP_EN_SFT, 0, nau8824_pump_event,
+		SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD),
+	SND_SOC_DAPM_PGA("Output Driver L",
+		NAU8824_REG_POWER_UP_CONTROL, 3, 0, NULL, 0),
+	SND_SOC_DAPM_PGA("Output Driver R",
+		NAU8824_REG_POWER_UP_CONTROL, 2, 0, NULL, 0),
+	SND_SOC_DAPM_PGA("Main Driver L",
+		NAU8824_REG_POWER_UP_CONTROL, 1, 0, NULL, 0),
+	SND_SOC_DAPM_PGA("Main Driver R",
+		NAU8824_REG_POWER_UP_CONTROL, 0, 0, NULL, 0),
+	SND_SOC_DAPM_PGA("HP Boost Driver", NAU8824_REG_BOOST,
+		NAU8824_HP_BOOST_DIS_SFT, 1, NULL, 0),
+	SND_SOC_DAPM_PGA("Class G", NAU8824_REG_CLASSG,
+		NAU8824_CLASSG_EN_SFT, 0, NULL, 0),
+
+	SND_SOC_DAPM_OUTPUT("SPKOUTL"),
+	SND_SOC_DAPM_OUTPUT("SPKOUTR"),
+	SND_SOC_DAPM_OUTPUT("HPOL"),
+	SND_SOC_DAPM_OUTPUT("HPOR"),
+};
+
+static const struct snd_soc_dapm_route nau8824_dapm_routes[] = {
+	{"DMIC1 Enable", "Switch", "DMIC1"},
+	{"DMIC2 Enable", "Switch", "DMIC2"},
+	{"DMIC3 Enable", "Switch", "DMIC3"},
+	{"DMIC4 Enable", "Switch", "DMIC4"},
+
+	{"DMIC1", NULL, "DMIC12 Power"},
+	{"DMIC2", NULL, "DMIC12 Power"},
+	{"DMIC3", NULL, "DMIC34 Power"},
+	{"DMIC4", NULL, "DMIC34 Power"},
+	{"DMIC12 Power", NULL, "DMIC Clock"},
+	{"DMIC34 Power", NULL, "DMIC Clock"},
+
+	{"Left ADC", "MIC Switch", "MIC1"},
+	{"Left ADC", "HSMIC Switch", "HSMIC1"},
+	{"Right ADC", "MIC Switch", "MIC2"},
+	{"Right ADC", "HSMIC Switch", "HSMIC2"},
+
+	{"ADCL", NULL, "Left ADC"},
+	{"ADCR", NULL, "Right ADC"},
+
+	{"AIFTX", NULL, "MICBIAS"},
+	{"AIFTX", NULL, "ADCL"},
+	{"AIFTX", NULL, "ADCR"},
+	{"AIFTX", NULL, "DMIC1 Enable"},
+	{"AIFTX", NULL, "DMIC2 Enable"},
+	{"AIFTX", NULL, "DMIC3 Enable"},
+	{"AIFTX", NULL, "DMIC4 Enable"},
+
+	{"AIFTX", NULL, "System Clock"},
+	{"AIFRX", NULL, "System Clock"},
+
+	{"DACL", NULL, "AIFRX"},
+	{"DACL", NULL, "DACL Clock"},
+	{"DACR", NULL, "AIFRX"},
+	{"DACR", NULL, "DACR Clock"},
+
+	{"DACL Mux", "DACL", "DACL"},
+	{"DACL Mux", "DACR", "DACR"},
+	{"DACR Mux", "DACL", "DACL"},
+	{"DACR Mux", "DACR", "DACR"},
+
+	{"Output DACL", NULL, "DACL Mux"},
+	{"Output DACR", NULL, "DACR Mux"},
+
+	{"ClassD", NULL, "Output DACL"},
+	{"ClassD", NULL, "Output DACR"},
+
+	{"Left Headphone", "DAC Left Switch", "Output DACL"},
+	{"Left Headphone", "DAC Right Switch", "Output DACR"},
+	{"Right Headphone", "DAC Left Switch", "Output DACL"},
+	{"Right Headphone", "DAC Right Switch", "Output DACR"},
+
+	{"Charge Pump", NULL, "Left Headphone"},
+	{"Charge Pump", NULL, "Right Headphone"},
+	{"Output Driver L", NULL, "Charge Pump"},
+	{"Output Driver R", NULL, "Charge Pump"},
+	{"Main Driver L", NULL, "Output Driver L"},
+	{"Main Driver R", NULL, "Output Driver R"},
+	{"Class G", NULL, "Main Driver L"},
+	{"Class G", NULL, "Main Driver R"},
+	{"HP Boost Driver", NULL, "Class G"},
+
+	{"SPKOUTL", NULL, "ClassD"},
+	{"SPKOUTR", NULL, "ClassD"},
+	{"HPOL", NULL, "HP Boost Driver"},
+	{"HPOR", NULL, "HP Boost Driver"},
+};
+
+static bool nau8824_is_jack_inserted(struct nau8824 *nau8824)
+{
+	struct snd_soc_jack *jack = nau8824->jack;
+	bool insert = FALSE;
+
+	if (nau8824->irq && jack)
+		insert = jack->status & SND_JACK_HEADPHONE;
+
+	return insert;
+}
+
+static void nau8824_int_status_clear_all(struct regmap *regmap)
+{
+	int active_irq, clear_irq, i;
+
+	/* Reset the intrruption status from rightmost bit if the corres-
+	 * ponding irq event occurs.
+	 */
+	regmap_read(regmap, NAU8824_REG_IRQ, &active_irq);
+	for (i = 0; i < NAU8824_REG_DATA_LEN; i++) {
+		clear_irq = (0x1 << i);
+		if (active_irq & clear_irq)
+			regmap_write(regmap,
+				NAU8824_REG_CLEAR_INT_REG, clear_irq);
+	}
+}
+
+static void nau8824_eject_jack(struct nau8824 *nau8824)
+{
+	struct snd_soc_dapm_context *dapm = nau8824->dapm;
+	struct regmap *regmap = nau8824->regmap;
+
+	/* Clear all interruption status */
+	nau8824_int_status_clear_all(regmap);
+
+	snd_soc_dapm_disable_pin(dapm, "SAR");
+	snd_soc_dapm_disable_pin(dapm, "MICBIAS");
+	snd_soc_dapm_sync(dapm);
+
+	/* Enable the insertion interruption, disable the ejection
+	 * interruption, and then bypass de-bounce circuit.
+	 */
+	regmap_update_bits(regmap, NAU8824_REG_INTERRUPT_SETTING,
+		NAU8824_IRQ_KEY_RELEASE_DIS | NAU8824_IRQ_KEY_SHORT_PRESS_DIS |
+		NAU8824_IRQ_EJECT_DIS | NAU8824_IRQ_INSERT_DIS,
+		NAU8824_IRQ_KEY_RELEASE_DIS | NAU8824_IRQ_KEY_SHORT_PRESS_DIS |
+		NAU8824_IRQ_EJECT_DIS);
+	regmap_update_bits(regmap, NAU8824_REG_INTERRUPT_SETTING_1,
+		NAU8824_IRQ_INSERT_EN | NAU8824_IRQ_EJECT_EN,
+		NAU8824_IRQ_INSERT_EN);
+	regmap_update_bits(regmap, NAU8824_REG_ENA_CTRL,
+		NAU8824_JD_SLEEP_MODE, NAU8824_JD_SLEEP_MODE);
+
+	/* Close clock for jack type detection at manual mode */
+	nau8824_config_sysclk(nau8824, NAU8824_CLK_DIS, 0);
+}
+
+static void nau8824_jdet_work(struct work_struct *work)
+{
+	struct nau8824 *nau8824 = container_of(
+		work, struct nau8824, jdet_work);
+	struct snd_soc_dapm_context *dapm = nau8824->dapm;
+	struct regmap *regmap = nau8824->regmap;
+	int adc_value, event = 0, event_mask = 0;
+
+	snd_soc_dapm_force_enable_pin(dapm, "MICBIAS");
+	snd_soc_dapm_force_enable_pin(dapm, "SAR");
+	snd_soc_dapm_sync(dapm);
+
+	msleep(100);
+
+	regmap_read(regmap, NAU8824_REG_SAR_ADC_DATA_OUT, &adc_value);
+	adc_value = adc_value & NAU8824_SAR_ADC_DATA_MASK;
+	dev_dbg(nau8824->dev, "SAR ADC data 0x%02x\n", adc_value);
+	if (adc_value < HEADSET_SARADC_THD) {
+		event |= SND_JACK_HEADPHONE;
+
+		snd_soc_dapm_disable_pin(dapm, "SAR");
+		snd_soc_dapm_disable_pin(dapm, "MICBIAS");
+		snd_soc_dapm_sync(dapm);
+	} else {
+		event |= SND_JACK_HEADSET;
+	}
+	event_mask |= SND_JACK_HEADSET;
+	snd_soc_jack_report(nau8824->jack, event, event_mask);
+
+	nau8824_sema_release(nau8824);
+}
+
+static void nau8824_setup_auto_irq(struct nau8824 *nau8824)
+{
+	struct regmap *regmap = nau8824->regmap;
+
+	/* Enable jack ejection, short key press and release interruption. */
+	regmap_update_bits(regmap, NAU8824_REG_INTERRUPT_SETTING_1,
+		NAU8824_IRQ_INSERT_EN | NAU8824_IRQ_EJECT_EN,
+		NAU8824_IRQ_EJECT_EN);
+	regmap_update_bits(regmap, NAU8824_REG_INTERRUPT_SETTING,
+		NAU8824_IRQ_EJECT_DIS | NAU8824_IRQ_KEY_RELEASE_DIS |
+		NAU8824_IRQ_KEY_SHORT_PRESS_DIS, 0);
+	/* Enable internal VCO needed for interruptions */
+	nau8824_config_sysclk(nau8824, NAU8824_CLK_INTERNAL, 0);
+	regmap_update_bits(regmap, NAU8824_REG_ENA_CTRL,
+		NAU8824_JD_SLEEP_MODE, 0);
+}
+
+static int nau8824_button_decode(int value)
+{
+	int buttons = 0;
+
+	/* The chip supports up to 8 buttons, but ALSA defines
+	 * only 6 buttons.
+	 */
+	if (value & BIT(0))
+		buttons |= SND_JACK_BTN_0;
+	if (value & BIT(1))
+		buttons |= SND_JACK_BTN_1;
+	if (value & BIT(2))
+		buttons |= SND_JACK_BTN_2;
+	if (value & BIT(3))
+		buttons |= SND_JACK_BTN_3;
+	if (value & BIT(4))
+		buttons |= SND_JACK_BTN_4;
+	if (value & BIT(5))
+		buttons |= SND_JACK_BTN_5;
+
+	return buttons;
+}
+
+#define NAU8824_BUTTONS (SND_JACK_BTN_0 | SND_JACK_BTN_1 | \
+		SND_JACK_BTN_2 | SND_JACK_BTN_3)
+
+static irqreturn_t nau8824_interrupt(int irq, void *data)
+{
+	struct nau8824 *nau8824 = (struct nau8824 *)data;
+	struct regmap *regmap = nau8824->regmap;
+	int active_irq, clear_irq = 0, event = 0, event_mask = 0;
+
+	if (regmap_read(regmap, NAU8824_REG_IRQ, &active_irq)) {
+		dev_err(nau8824->dev, "failed to read irq status\n");
+		return IRQ_NONE;
+	}
+	dev_dbg(nau8824->dev, "IRQ %x\n", active_irq);
+
+	if (active_irq & NAU8824_JACK_EJECTION_DETECTED) {
+		nau8824_eject_jack(nau8824);
+		event_mask |= SND_JACK_HEADSET;
+		clear_irq = NAU8824_JACK_EJECTION_DETECTED;
+		/* release semaphore held after resume,
+		 * and cancel jack detection
+		 */
+		nau8824_sema_release(nau8824);
+		cancel_work_sync(&nau8824->jdet_work);
+	} else if (active_irq & NAU8824_KEY_SHORT_PRESS_IRQ) {
+		int key_status, button_pressed;
+
+		regmap_read(regmap, NAU8824_REG_CLEAR_INT_REG,
+			&key_status);
+
+		/* lower 8 bits of the register are for pressed keys */
+		button_pressed = nau8824_button_decode(key_status);
+
+		event |= button_pressed;
+		dev_dbg(nau8824->dev, "button %x pressed\n", event);
+		event_mask |= NAU8824_BUTTONS;
+		clear_irq = NAU8824_KEY_SHORT_PRESS_IRQ;
+	} else if (active_irq & NAU8824_KEY_RELEASE_IRQ) {
+		event_mask = NAU8824_BUTTONS;
+		clear_irq = NAU8824_KEY_RELEASE_IRQ;
+	} else if (active_irq & NAU8824_JACK_INSERTION_DETECTED) {
+		/* Turn off insertion interruption at manual mode */
+		regmap_update_bits(regmap,
+			NAU8824_REG_INTERRUPT_SETTING,
+			NAU8824_IRQ_INSERT_DIS,
+			NAU8824_IRQ_INSERT_DIS);
+		regmap_update_bits(regmap,
+			NAU8824_REG_INTERRUPT_SETTING_1,
+			NAU8824_IRQ_INSERT_EN, 0);
+		/* detect microphone and jack type */
+		cancel_work_sync(&nau8824->jdet_work);
+		schedule_work(&nau8824->jdet_work);
+
+		/* Enable interruption for jack type detection at audo
+		 * mode which can detect microphone and jack type.
+		 */
+		nau8824_setup_auto_irq(nau8824);
+	}
+
+	if (!clear_irq)
+		clear_irq = active_irq;
+	/* clears the rightmost interruption */
+	regmap_write(regmap, NAU8824_REG_CLEAR_INT_REG, clear_irq);
+
+	if (event_mask)
+		snd_soc_jack_report(nau8824->jack, event, event_mask);
+
+	return IRQ_HANDLED;
+}
+
+static int nau8824_clock_check(struct nau8824 *nau8824,
+	int stream, int rate, int osr)
+{
+	int osrate;
+
+	if (stream == SNDRV_PCM_STREAM_PLAYBACK) {
+		if (osr >= ARRAY_SIZE(osr_dac_sel))
+			return -EINVAL;
+		osrate = osr_dac_sel[osr].osr;
+	} else {
+		if (osr >= ARRAY_SIZE(osr_adc_sel))
+			return -EINVAL;
+		osrate = osr_adc_sel[osr].osr;
+	}
+
+	if (!osrate || rate * osr > CLK_DA_AD_MAX) {
+		dev_err(nau8824->dev, "exceed the maximum frequency of CLK_ADC or CLK_DAC\n");
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+static int nau8824_hw_params(struct snd_pcm_substream *substream,
+	struct snd_pcm_hw_params *params, struct snd_soc_dai *dai)
+{
+	struct snd_soc_codec *codec = dai->codec;
+	struct nau8824 *nau8824 = snd_soc_codec_get_drvdata(codec);
+	unsigned int val_len = 0, osr, ctrl_val, bclk_fs, bclk_div;
+
+	nau8824_sema_acquire(nau8824, HZ);
+
+	/* CLK_DAC or CLK_ADC = OSR * FS
+	 * DAC or ADC clock frequency is defined as Over Sampling Rate (OSR)
+	 * multiplied by the audio sample rate (Fs). Note that the OSR and Fs
+	 * values must be selected such that the maximum frequency is less
+	 * than 6.144 MHz.
+	 */
+	nau8824->fs = params_rate(params);
+	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
+		regmap_read(nau8824->regmap,
+			NAU8824_REG_DAC_FILTER_CTRL_1, &osr);
+		osr &= NAU8824_DAC_OVERSAMPLE_MASK;
+		if (nau8824_clock_check(nau8824, substream->stream,
+			nau8824->fs, osr))
+			return -EINVAL;
+		regmap_update_bits(nau8824->regmap, NAU8824_REG_CLK_DIVIDER,
+			NAU8824_CLK_DAC_SRC_MASK,
+			osr_dac_sel[osr].clk_src << NAU8824_CLK_DAC_SRC_SFT);
+	} else {
+		regmap_read(nau8824->regmap,
+			NAU8824_REG_ADC_FILTER_CTRL, &osr);
+		osr &= NAU8824_ADC_SYNC_DOWN_MASK;
+		if (nau8824_clock_check(nau8824, substream->stream,
+			nau8824->fs, osr))
+			return -EINVAL;
+		regmap_update_bits(nau8824->regmap, NAU8824_REG_CLK_DIVIDER,
+			NAU8824_CLK_ADC_SRC_MASK,
+			osr_adc_sel[osr].clk_src << NAU8824_CLK_ADC_SRC_SFT);
+	}
+
+	/* make BCLK and LRC divde configuration if the codec as master. */
+	regmap_read(nau8824->regmap,
+		NAU8824_REG_PORT0_I2S_PCM_CTRL_2, &ctrl_val);
+	if (ctrl_val & NAU8824_I2S_MS_MASTER) {
+		/* get the bclk and fs ratio */
+		bclk_fs = snd_soc_params_to_bclk(params) / nau8824->fs;
+		if (bclk_fs <= 32)
+			bclk_div = 0x3;
+		else if (bclk_fs <= 64)
+			bclk_div = 0x2;
+		else if (bclk_fs <= 128)
+			bclk_div = 0x1;
+		else if (bclk_fs <= 256)
+			bclk_div = 0;
+		else
+			return -EINVAL;
+		regmap_update_bits(nau8824->regmap,
+			NAU8824_REG_PORT0_I2S_PCM_CTRL_2,
+			NAU8824_I2S_LRC_DIV_MASK | NAU8824_I2S_BLK_DIV_MASK,
+			(bclk_div << NAU8824_I2S_LRC_DIV_SFT) | bclk_div);
+	}
+
+	switch (params_width(params)) {
+	case 16:
+		val_len |= NAU8824_I2S_DL_16;
+		break;
+	case 20:
+		val_len |= NAU8824_I2S_DL_20;
+		break;
+	case 24:
+		val_len |= NAU8824_I2S_DL_24;
+		break;
+	case 32:
+		val_len |= NAU8824_I2S_DL_32;
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	regmap_update_bits(nau8824->regmap, NAU8824_REG_PORT0_I2S_PCM_CTRL_1,
+		NAU8824_I2S_DL_MASK, val_len);
+
+	nau8824_sema_release(nau8824);
+
+	return 0;
+}
+
+static int nau8824_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
+{
+	struct snd_soc_codec *codec = dai->codec;
+	struct nau8824 *nau8824 = snd_soc_codec_get_drvdata(codec);
+	unsigned int ctrl1_val = 0, ctrl2_val = 0;
+
+	nau8824_sema_acquire(nau8824, HZ);
+
+	switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
+	case SND_SOC_DAIFMT_CBM_CFM:
+		ctrl2_val |= NAU8824_I2S_MS_MASTER;
+		break;
+	case SND_SOC_DAIFMT_CBS_CFS:
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
+	case SND_SOC_DAIFMT_NB_NF:
+		break;
+	case SND_SOC_DAIFMT_IB_NF:
+		ctrl1_val |= NAU8824_I2S_BP_INV;
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
+	case SND_SOC_DAIFMT_I2S:
+		ctrl1_val |= NAU8824_I2S_DF_I2S;
+		break;
+	case SND_SOC_DAIFMT_LEFT_J:
+		ctrl1_val |= NAU8824_I2S_DF_LEFT;
+		break;
+	case SND_SOC_DAIFMT_RIGHT_J:
+		ctrl1_val |= NAU8824_I2S_DF_RIGTH;
+		break;
+	case SND_SOC_DAIFMT_DSP_A:
+		ctrl1_val |= NAU8824_I2S_DF_PCM_AB;
+		break;
+	case SND_SOC_DAIFMT_DSP_B:
+		ctrl1_val |= NAU8824_I2S_DF_PCM_AB;
+		ctrl1_val |= NAU8824_I2S_PCMB_EN;
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	regmap_update_bits(nau8824->regmap, NAU8824_REG_PORT0_I2S_PCM_CTRL_1,
+		NAU8824_I2S_DF_MASK | NAU8824_I2S_BP_MASK |
+		NAU8824_I2S_PCMB_EN, ctrl1_val);
+	regmap_update_bits(nau8824->regmap, NAU8824_REG_PORT0_I2S_PCM_CTRL_2,
+		NAU8824_I2S_MS_MASK, ctrl2_val);
+
+	nau8824_sema_release(nau8824);
+
+	return 0;
+}
+
+/**
+ * nau8824_calc_fll_param - Calculate FLL parameters.
+ * @fll_in: external clock provided to codec.
+ * @fs: sampling rate.
+ * @fll_param: Pointer to structure of FLL parameters.
+ *
+ * Calculate FLL parameters to configure codec.
+ *
+ * Returns 0 for success or negative error code.
+ */
+static int nau8824_calc_fll_param(unsigned int fll_in,
+	unsigned int fs, struct nau8824_fll *fll_param)
+{
+	u64 fvco, fvco_max;
+	unsigned int fref, i, fvco_sel;
+
+	/* Ensure the reference clock frequency (FREF) is <= 13.5MHz by dividing
+	 * freq_in by 1, 2, 4, or 8 using FLL pre-scalar.
+	 * FREF = freq_in / NAU8824_FLL_REF_DIV_MASK
+	 */
+	for (i = 0; i < ARRAY_SIZE(fll_pre_scalar); i++) {
+		fref = fll_in / fll_pre_scalar[i].param;
+		if (fref <= NAU_FREF_MAX)
+			break;
+	}
+	if (i == ARRAY_SIZE(fll_pre_scalar))
+		return -EINVAL;
+	fll_param->clk_ref_div = fll_pre_scalar[i].val;
+
+	/* Choose the FLL ratio based on FREF */
+	for (i = 0; i < ARRAY_SIZE(fll_ratio); i++) {
+		if (fref >= fll_ratio[i].param)
+			break;
+	}
+	if (i == ARRAY_SIZE(fll_ratio))
+		return -EINVAL;
+	fll_param->ratio = fll_ratio[i].val;
+
+	/* Calculate the frequency of DCO (FDCO) given freq_out = 256 * Fs.
+	 * FDCO must be within the 90MHz - 124MHz or the FFL cannot be
+	 * guaranteed across the full range of operation.
+	 * FDCO = freq_out * 2 * mclk_src_scaling
+	 */
+	fvco_max = 0;
+	fvco_sel = ARRAY_SIZE(mclk_src_scaling);
+	for (i = 0; i < ARRAY_SIZE(mclk_src_scaling); i++) {
+		fvco = 256 * fs * 2 * mclk_src_scaling[i].param;
+		if (fvco > NAU_FVCO_MIN && fvco < NAU_FVCO_MAX &&
+			fvco_max < fvco) {
+			fvco_max = fvco;
+			fvco_sel = i;
+		}
+	}
+	if (ARRAY_SIZE(mclk_src_scaling) == fvco_sel)
+		return -EINVAL;
+	fll_param->mclk_src = mclk_src_scaling[fvco_sel].val;
+
+	/* Calculate the FLL 10-bit integer input and the FLL 16-bit fractional
+	 * input based on FDCO, FREF and FLL ratio.
+	 */
+	fvco = div_u64(fvco_max << 16, fref * fll_param->ratio);
+	fll_param->fll_int = (fvco >> 16) & 0x3FF;
+	fll_param->fll_frac = fvco & 0xFFFF;
+	return 0;
+}
+
+static void nau8824_fll_apply(struct regmap *regmap,
+	struct nau8824_fll *fll_param)
+{
+	regmap_update_bits(regmap, NAU8824_REG_CLK_DIVIDER,
+		NAU8824_CLK_SRC_MASK | NAU8824_CLK_MCLK_SRC_MASK,
+		NAU8824_CLK_SRC_MCLK | fll_param->mclk_src);
+	regmap_update_bits(regmap, NAU8824_REG_FLL1,
+		NAU8824_FLL_RATIO_MASK, fll_param->ratio);
+	/* FLL 16-bit fractional input */
+	regmap_write(regmap, NAU8824_REG_FLL2, fll_param->fll_frac);
+	/* FLL 10-bit integer input */
+	regmap_update_bits(regmap, NAU8824_REG_FLL3,
+		NAU8824_FLL_INTEGER_MASK, fll_param->fll_int);
+	/* FLL pre-scaler */
+	regmap_update_bits(regmap, NAU8824_REG_FLL4,
+		NAU8824_FLL_REF_DIV_MASK,
+		fll_param->clk_ref_div << NAU8824_FLL_REF_DIV_SFT);
+	/* select divided VCO input */
+	regmap_update_bits(regmap, NAU8824_REG_FLL5,
+		NAU8824_FLL_CLK_SW_MASK, NAU8824_FLL_CLK_SW_REF);
+	/* Disable free-running mode */
+	regmap_update_bits(regmap,
+		NAU8824_REG_FLL6, NAU8824_DCO_EN, 0);
+	if (fll_param->fll_frac) {
+		regmap_update_bits(regmap, NAU8824_REG_FLL5,
+			NAU8824_FLL_PDB_DAC_EN | NAU8824_FLL_LOOP_FTR_EN |
+			NAU8824_FLL_FTR_SW_MASK,
+			NAU8824_FLL_PDB_DAC_EN | NAU8824_FLL_LOOP_FTR_EN |
+			NAU8824_FLL_FTR_SW_FILTER);
+		regmap_update_bits(regmap, NAU8824_REG_FLL6,
+			NAU8824_SDM_EN, NAU8824_SDM_EN);
+	} else {
+		regmap_update_bits(regmap, NAU8824_REG_FLL5,
+			NAU8824_FLL_PDB_DAC_EN | NAU8824_FLL_LOOP_FTR_EN |
+			NAU8824_FLL_FTR_SW_MASK, NAU8824_FLL_FTR_SW_ACCU);
+		regmap_update_bits(regmap,
+			NAU8824_REG_FLL6, NAU8824_SDM_EN, 0);
+	}
+}
+
+/* freq_out must be 256*Fs in order to achieve the best performance */
+static int nau8824_set_pll(struct snd_soc_codec *codec, int pll_id, int source,
+		unsigned int freq_in, unsigned int freq_out)
+{
+	struct nau8824 *nau8824 = snd_soc_codec_get_drvdata(codec);
+	struct nau8824_fll fll_param;
+	int ret, fs;
+
+	fs = freq_out / 256;
+	ret = nau8824_calc_fll_param(freq_in, fs, &fll_param);
+	if (ret < 0) {
+		dev_err(nau8824->dev, "Unsupported input clock %d\n", freq_in);
+		return ret;
+	}
+	dev_dbg(nau8824->dev, "mclk_src=%x ratio=%x fll_frac=%x fll_int=%x clk_ref_div=%x\n",
+		fll_param.mclk_src, fll_param.ratio, fll_param.fll_frac,
+		fll_param.fll_int, fll_param.clk_ref_div);
+
+	nau8824_fll_apply(nau8824->regmap, &fll_param);
+	mdelay(2);
+	regmap_update_bits(nau8824->regmap, NAU8824_REG_CLK_DIVIDER,
+		NAU8824_CLK_SRC_MASK, NAU8824_CLK_SRC_VCO);
+
+	return 0;
+}
+
+static int nau8824_config_sysclk(struct nau8824 *nau8824,
+	int clk_id, unsigned int freq)
+{
+	struct regmap *regmap = nau8824->regmap;
+
+	switch (clk_id) {
+	case NAU8824_CLK_DIS:
+		regmap_update_bits(regmap, NAU8824_REG_CLK_DIVIDER,
+			NAU8824_CLK_SRC_MASK, NAU8824_CLK_SRC_MCLK);
+		regmap_update_bits(regmap, NAU8824_REG_FLL6,
+			NAU8824_DCO_EN, 0);
+		break;
+
+	case NAU8824_CLK_MCLK:
+		nau8824_sema_acquire(nau8824, HZ);
+		regmap_update_bits(regmap, NAU8824_REG_CLK_DIVIDER,
+			NAU8824_CLK_SRC_MASK, NAU8824_CLK_SRC_MCLK);
+		regmap_update_bits(regmap, NAU8824_REG_FLL6,
+			NAU8824_DCO_EN, 0);
+		nau8824_sema_release(nau8824);
+		break;
+
+	case NAU8824_CLK_INTERNAL:
+		regmap_update_bits(regmap, NAU8824_REG_FLL6,
+			NAU8824_DCO_EN, NAU8824_DCO_EN);
+		regmap_update_bits(regmap, NAU8824_REG_CLK_DIVIDER,
+			NAU8824_CLK_SRC_MASK, NAU8824_CLK_SRC_VCO);
+		break;
+
+	case NAU8824_CLK_FLL_MCLK:
+		nau8824_sema_acquire(nau8824, HZ);
+		regmap_update_bits(regmap, NAU8824_REG_FLL3,
+			NAU8824_FLL_CLK_SRC_MASK, NAU8824_FLL_CLK_SRC_MCLK);
+		nau8824_sema_release(nau8824);
+		break;
+
+	case NAU8824_CLK_FLL_BLK:
+		nau8824_sema_acquire(nau8824, HZ);
+		regmap_update_bits(regmap, NAU8824_REG_FLL3,
+			NAU8824_FLL_CLK_SRC_MASK, NAU8824_FLL_CLK_SRC_BLK);
+		nau8824_sema_release(nau8824);
+		break;
+
+	case NAU8824_CLK_FLL_FS:
+		nau8824_sema_acquire(nau8824, HZ);
+		regmap_update_bits(regmap, NAU8824_REG_FLL3,
+			NAU8824_FLL_CLK_SRC_MASK, NAU8824_FLL_CLK_SRC_FS);
+		nau8824_sema_release(nau8824);
+		break;
+
+	default:
+		dev_err(nau8824->dev, "Invalid clock id (%d)\n", clk_id);
+		return -EINVAL;
+	}
+
+	dev_dbg(nau8824->dev, "Sysclk is %dHz and clock id is %d\n", freq,
+		clk_id);
+
+	return 0;
+}
+
+static int nau8824_set_sysclk(struct snd_soc_codec *codec,
+	int clk_id, int source, unsigned int freq, int dir)
+{
+	struct nau8824 *nau8824 = snd_soc_codec_get_drvdata(codec);
+
+	return nau8824_config_sysclk(nau8824, clk_id, freq);
+}
+
+static void nau8824_resume_setup(struct nau8824 *nau8824)
+{
+	nau8824_config_sysclk(nau8824, NAU8824_CLK_DIS, 0);
+	if (nau8824->irq) {
+		/* Clear all interruption status */
+		nau8824_int_status_clear_all(nau8824->regmap);
+		/* Enable jack detection at sleep mode, insertion detection,
+		 * and ejection detection.
+		 */
+		regmap_update_bits(nau8824->regmap, NAU8824_REG_ENA_CTRL,
+			NAU8824_JD_SLEEP_MODE, NAU8824_JD_SLEEP_MODE);
+		regmap_update_bits(nau8824->regmap,
+			NAU8824_REG_INTERRUPT_SETTING_1,
+			NAU8824_IRQ_EJECT_EN | NAU8824_IRQ_INSERT_EN,
+			NAU8824_IRQ_EJECT_EN | NAU8824_IRQ_INSERT_EN);
+		regmap_update_bits(nau8824->regmap,
+			NAU8824_REG_INTERRUPT_SETTING,
+			NAU8824_IRQ_EJECT_DIS | NAU8824_IRQ_INSERT_DIS, 0);
+	}
+}
+
+static int nau8824_set_bias_level(struct snd_soc_codec *codec,
+	enum snd_soc_bias_level level)
+{
+	struct nau8824 *nau8824 = snd_soc_codec_get_drvdata(codec);
+
+	switch (level) {
+	case SND_SOC_BIAS_ON:
+		break;
+
+	case SND_SOC_BIAS_PREPARE:
+		break;
+
+	case SND_SOC_BIAS_STANDBY:
+		if (snd_soc_codec_get_bias_level(codec) == SND_SOC_BIAS_OFF) {
+			/* Setup codec configuration after resume */
+			nau8824_resume_setup(nau8824);
+		}
+		break;
+
+	case SND_SOC_BIAS_OFF:
+		regmap_update_bits(nau8824->regmap,
+			NAU8824_REG_INTERRUPT_SETTING, 0x3ff, 0x3ff);
+		regmap_update_bits(nau8824->regmap,
+			NAU8824_REG_INTERRUPT_SETTING_1,
+			NAU8824_IRQ_EJECT_EN | NAU8824_IRQ_INSERT_EN, 0);
+		break;
+	}
+
+	return 0;
+}
+
+static int nau8824_codec_probe(struct snd_soc_codec *codec)
+{
+	struct nau8824 *nau8824 = snd_soc_codec_get_drvdata(codec);
+	struct snd_soc_dapm_context *dapm = snd_soc_codec_get_dapm(codec);
+
+	nau8824->dapm = dapm;
+
+	return 0;
+}
+
+static int __maybe_unused nau8824_suspend(struct snd_soc_codec *codec)
+{
+	struct nau8824 *nau8824 = snd_soc_codec_get_drvdata(codec);
+
+	if (nau8824->irq) {
+		disable_irq(nau8824->irq);
+		snd_soc_codec_force_bias_level(codec, SND_SOC_BIAS_OFF);
+	}
+	regcache_cache_only(nau8824->regmap, true);
+	regcache_mark_dirty(nau8824->regmap);
+
+	return 0;
+}
+
+static int __maybe_unused nau8824_resume(struct snd_soc_codec *codec)
+{
+	struct nau8824 *nau8824 = snd_soc_codec_get_drvdata(codec);
+
+	regcache_cache_only(nau8824->regmap, false);
+	regcache_sync(nau8824->regmap);
+	if (nau8824->irq) {
+		/* Hold semaphore to postpone playback happening
+		 * until jack detection done.
+		 */
+		nau8824_sema_acquire(nau8824, 0);
+		enable_irq(nau8824->irq);
+	}
+
+	return 0;
+}
+
+static struct snd_soc_codec_driver nau8824_codec_driver = {
+	.probe = nau8824_codec_probe,
+	.set_sysclk = nau8824_set_sysclk,
+	.set_pll = nau8824_set_pll,
+	.set_bias_level = nau8824_set_bias_level,
+	.suspend = nau8824_suspend,
+	.resume = nau8824_resume,
+	.suspend_bias_off = true,
+
+	.component_driver = {
+		.controls = nau8824_snd_controls,
+		.num_controls = ARRAY_SIZE(nau8824_snd_controls),
+		.dapm_widgets = nau8824_dapm_widgets,
+		.num_dapm_widgets = ARRAY_SIZE(nau8824_dapm_widgets),
+		.dapm_routes = nau8824_dapm_routes,
+		.num_dapm_routes = ARRAY_SIZE(nau8824_dapm_routes),
+	},
+};
+
+static const struct snd_soc_dai_ops nau8824_dai_ops = {
+	.hw_params = nau8824_hw_params,
+	.set_fmt = nau8824_set_fmt,
+};
+
+#define NAU8824_RATES SNDRV_PCM_RATE_8000_192000
+#define NAU8824_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE \
+	 | SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_S32_LE)
+
+static struct snd_soc_dai_driver nau8824_dai = {
+	.name = NAU8824_CODEC_DAI,
+	.playback = {
+		.stream_name	 = "Playback",
+		.channels_min	 = 1,
+		.channels_max	 = 2,
+		.rates		 = NAU8824_RATES,
+		.formats	 = NAU8824_FORMATS,
+	},
+	.capture = {
+		.stream_name	 = "Capture",
+		.channels_min	 = 1,
+		.channels_max	 = 2,
+		.rates		 = NAU8824_RATES,
+		.formats	 = NAU8824_FORMATS,
+	},
+	.ops = &nau8824_dai_ops,
+};
+
+static const struct regmap_config nau8824_regmap_config = {
+	.val_bits = NAU8824_REG_ADDR_LEN,
+	.reg_bits = NAU8824_REG_DATA_LEN,
+
+	.max_register = NAU8824_REG_MAX,
+	.readable_reg = nau8824_readable_reg,
+	.writeable_reg = nau8824_writeable_reg,
+	.volatile_reg = nau8824_volatile_reg,
+
+	.cache_type = REGCACHE_RBTREE,
+	.reg_defaults = nau8824_reg_defaults,
+	.num_reg_defaults = ARRAY_SIZE(nau8824_reg_defaults),
+};
+
+/**
+ * nau8824_enable_jack_detect - Specify a jack for event reporting
+ *
+ * @component:  component to register the jack with
+ * @jack: jack to use to report headset and button events on
+ *
+ * After this function has been called the headset insert/remove and button
+ * events will be routed to the given jack.  Jack can be null to stop
+ * reporting.
+ */
+int nau8824_enable_jack_detect(struct snd_soc_codec *codec,
+	struct snd_soc_jack *jack)
+{
+	struct nau8824 *nau8824 = snd_soc_codec_get_drvdata(codec);
+	int ret;
+
+	nau8824->jack = jack;
+	/* Initiate jack detection work queue */
+	INIT_WORK(&nau8824->jdet_work, nau8824_jdet_work);
+	ret = devm_request_threaded_irq(nau8824->dev, nau8824->irq, NULL,
+		nau8824_interrupt, IRQF_TRIGGER_LOW | IRQF_ONESHOT,
+		"nau8824", nau8824);
+	if (ret) {
+		dev_err(nau8824->dev, "Cannot request irq %d (%d)\n",
+			nau8824->irq, ret);
+	}
+
+	return ret;
+}
+EXPORT_SYMBOL_GPL(nau8824_enable_jack_detect);
+
+static void nau8824_reset_chip(struct regmap *regmap)
+{
+	regmap_write(regmap, NAU8824_REG_RESET, 0x00);
+	regmap_write(regmap, NAU8824_REG_RESET, 0x00);
+}
+
+static void nau8824_setup_buttons(struct nau8824 *nau8824)
+{
+	struct regmap *regmap = nau8824->regmap;
+
+	regmap_update_bits(regmap, NAU8824_REG_SAR_ADC,
+		NAU8824_SAR_TRACKING_GAIN_MASK,
+		nau8824->sar_voltage << NAU8824_SAR_TRACKING_GAIN_SFT);
+	regmap_update_bits(regmap, NAU8824_REG_SAR_ADC,
+		NAU8824_SAR_COMPARE_TIME_MASK,
+		nau8824->sar_compare_time << NAU8824_SAR_COMPARE_TIME_SFT);
+	regmap_update_bits(regmap, NAU8824_REG_SAR_ADC,
+		NAU8824_SAR_SAMPLING_TIME_MASK,
+		nau8824->sar_sampling_time << NAU8824_SAR_SAMPLING_TIME_SFT);
+
+	regmap_update_bits(regmap, NAU8824_REG_VDET_COEFFICIENT,
+		NAU8824_LEVELS_NR_MASK,
+		(nau8824->sar_threshold_num - 1) << NAU8824_LEVELS_NR_SFT);
+	regmap_update_bits(regmap, NAU8824_REG_VDET_COEFFICIENT,
+		NAU8824_HYSTERESIS_MASK,
+		nau8824->sar_hysteresis << NAU8824_HYSTERESIS_SFT);
+	regmap_update_bits(regmap, NAU8824_REG_VDET_COEFFICIENT,
+		NAU8824_SHORTKEY_DEBOUNCE_MASK,
+		nau8824->key_debounce << NAU8824_SHORTKEY_DEBOUNCE_SFT);
+
+	regmap_write(regmap, NAU8824_REG_VDET_THRESHOLD_1,
+		(nau8824->sar_threshold[0] << 8) | nau8824->sar_threshold[1]);
+	regmap_write(regmap, NAU8824_REG_VDET_THRESHOLD_2,
+		(nau8824->sar_threshold[2] << 8) | nau8824->sar_threshold[3]);
+	regmap_write(regmap, NAU8824_REG_VDET_THRESHOLD_3,
+		(nau8824->sar_threshold[4] << 8) | nau8824->sar_threshold[5]);
+	regmap_write(regmap, NAU8824_REG_VDET_THRESHOLD_4,
+		(nau8824->sar_threshold[6] << 8) | nau8824->sar_threshold[7]);
+}
+
+static void nau8824_init_regs(struct nau8824 *nau8824)
+{
+	struct regmap *regmap = nau8824->regmap;
+
+	/* Enable Bias/VMID/VMID Tieoff */
+	regmap_update_bits(regmap, NAU8824_REG_BIAS_ADJ,
+		NAU8824_VMID | NAU8824_VMID_SEL_MASK, NAU8824_VMID |
+		(nau8824->vref_impedance << NAU8824_VMID_SEL_SFT));
+	regmap_update_bits(regmap, NAU8824_REG_BOOST,
+		NAU8824_GLOBAL_BIAS_EN, NAU8824_GLOBAL_BIAS_EN);
+	mdelay(2);
+	regmap_update_bits(regmap, NAU8824_REG_MIC_BIAS,
+		NAU8824_MICBIAS_VOLTAGE_MASK, nau8824->micbias_voltage);
+	/* Disable Boost Driver, Automatic Short circuit protection enable */
+	regmap_update_bits(regmap, NAU8824_REG_BOOST,
+		NAU8824_PRECHARGE_DIS | NAU8824_HP_BOOST_DIS |
+		NAU8824_HP_BOOST_G_DIS | NAU8824_SHORT_SHUTDOWN_EN,
+		NAU8824_PRECHARGE_DIS | NAU8824_HP_BOOST_DIS |
+		NAU8824_HP_BOOST_G_DIS | NAU8824_SHORT_SHUTDOWN_EN);
+	/* Scaling for ADC and DAC clock */
+	regmap_update_bits(regmap, NAU8824_REG_CLK_DIVIDER,
+		NAU8824_CLK_ADC_SRC_MASK | NAU8824_CLK_DAC_SRC_MASK,
+		(0x1 << NAU8824_CLK_ADC_SRC_SFT) |
+		(0x1 << NAU8824_CLK_DAC_SRC_SFT));
+	regmap_update_bits(regmap, NAU8824_REG_DAC_MUTE_CTRL,
+		NAU8824_DAC_ZC_EN, NAU8824_DAC_ZC_EN);
+	regmap_update_bits(regmap, NAU8824_REG_ENA_CTRL,
+		NAU8824_DAC_CH1_EN | NAU8824_DAC_CH0_EN |
+		NAU8824_ADC_CH0_EN | NAU8824_ADC_CH1_EN |
+		NAU8824_ADC_CH2_EN | NAU8824_ADC_CH3_EN,
+		NAU8824_DAC_CH1_EN | NAU8824_DAC_CH0_EN |
+		NAU8824_ADC_CH0_EN | NAU8824_ADC_CH1_EN |
+		NAU8824_ADC_CH2_EN | NAU8824_ADC_CH3_EN);
+	regmap_update_bits(regmap, NAU8824_REG_CLK_GATING_ENA,
+		NAU8824_CLK_ADC_CH23_EN | NAU8824_CLK_ADC_CH01_EN |
+		NAU8824_CLK_DAC_CH1_EN | NAU8824_CLK_DAC_CH0_EN |
+		NAU8824_CLK_I2S_EN | NAU8824_CLK_GAIN_EN |
+		NAU8824_CLK_SAR_EN | NAU8824_CLK_DMIC_CH23_EN,
+		NAU8824_CLK_ADC_CH23_EN | NAU8824_CLK_ADC_CH01_EN |
+		NAU8824_CLK_DAC_CH1_EN | NAU8824_CLK_DAC_CH0_EN |
+		NAU8824_CLK_I2S_EN | NAU8824_CLK_GAIN_EN |
+		NAU8824_CLK_SAR_EN | NAU8824_CLK_DMIC_CH23_EN);
+	/* Class G timer 64ms */
+	regmap_update_bits(regmap, NAU8824_REG_CLASSG,
+		NAU8824_CLASSG_TIMER_MASK,
+		0x20 << NAU8824_CLASSG_TIMER_SFT);
+	regmap_update_bits(regmap, NAU8824_REG_TRIM_SETTINGS,
+		NAU8824_DRV_CURR_INC, NAU8824_DRV_CURR_INC);
+	/* Disable DACR/L power */
+	regmap_update_bits(regmap, NAU8824_REG_CHARGE_PUMP_CONTROL,
+		NAU8824_SPKR_PULL_DOWN | NAU8824_SPKL_PULL_DOWN |
+		NAU8824_POWER_DOWN_DACR | NAU8824_POWER_DOWN_DACL,
+		NAU8824_SPKR_PULL_DOWN | NAU8824_SPKL_PULL_DOWN |
+		NAU8824_POWER_DOWN_DACR | NAU8824_POWER_DOWN_DACL);
+	/* Enable TESTDAC. This sets the analog DAC inputs to a '0' input
+	 * signal to avoid any glitches due to power up transients in both
+	 * the analog and digital DAC circuit.
+	 */
+	regmap_update_bits(regmap, NAU8824_REG_ENABLE_LO,
+		NAU8824_TEST_DAC_EN, NAU8824_TEST_DAC_EN);
+	/* Config L/R channel */
+	regmap_update_bits(regmap, NAU8824_REG_DAC_CH0_DGAIN_CTRL,
+		NAU8824_DAC_CH0_SEL_MASK, NAU8824_DAC_CH0_SEL_I2S0);
+	regmap_update_bits(regmap, NAU8824_REG_DAC_CH1_DGAIN_CTRL,
+		NAU8824_DAC_CH1_SEL_MASK, NAU8824_DAC_CH1_SEL_I2S1);
+	regmap_update_bits(regmap, NAU8824_REG_ENABLE_LO,
+		NAU8824_DACR_HPR_EN | NAU8824_DACL_HPL_EN,
+		NAU8824_DACR_HPR_EN | NAU8824_DACL_HPL_EN);
+	/* Default oversampling/decimations settings are unusable
+	 * (audible hiss). Set it to something better.
+	 */
+	regmap_update_bits(regmap, NAU8824_REG_ADC_FILTER_CTRL,
+		NAU8824_ADC_SYNC_DOWN_MASK, NAU8824_ADC_SYNC_DOWN_64);
+	regmap_update_bits(regmap, NAU8824_REG_DAC_FILTER_CTRL_1,
+		NAU8824_DAC_CICCLP_OFF | NAU8824_DAC_OVERSAMPLE_MASK,
+		NAU8824_DAC_CICCLP_OFF | NAU8824_DAC_OVERSAMPLE_64);
+	/* Class D gain 9db for 1R and 2L */
+	regmap_update_bits(regmap, NAU8824_REG_CLASSD_GAIN_1,
+		NAU8824_CLASSD_GAIN_1R_MASK,
+		(0xa << NAU8824_CLASSD_GAIN_1R_SFT));
+	regmap_update_bits(regmap, NAU8824_REG_CLASSD_GAIN_2,
+		NAU8824_CLASSD_GAIN_2L_MASK, 0xa);
+	/* DAC clock delay 2ns, VREF */
+	regmap_update_bits(regmap, NAU8824_REG_RDAC,
+		NAU8824_RDAC_CLK_DELAY_MASK | NAU8824_RDAC_VREF_MASK,
+		(0x2 << NAU8824_RDAC_CLK_DELAY_SFT) |
+		(0x3 << NAU8824_RDAC_VREF_SFT));
+	/* PGA input mode selection */
+	regmap_update_bits(regmap, NAU8824_REG_FEPGA,
+		NAU8824_FEPGA_MODEL_SHORT_EN | NAU8824_FEPGA_MODER_SHORT_EN,
+		NAU8824_FEPGA_MODEL_SHORT_EN | NAU8824_FEPGA_MODER_SHORT_EN);
+	/* Digital microphone control */
+	regmap_update_bits(regmap, NAU8824_REG_ANALOG_CONTROL_1,
+		NAU8824_DMIC_CLK_DRV_STRG | NAU8824_DMIC_CLK_SLEW_FAST,
+		NAU8824_DMIC_CLK_DRV_STRG | NAU8824_DMIC_CLK_SLEW_FAST);
+	regmap_update_bits(regmap, NAU8824_REG_JACK_DET_CTRL,
+		NAU8824_JACK_LOGIC,
+		/* jkdet_polarity - 1  is for active-low */
+		nau8824->jkdet_polarity ? 0 : NAU8824_JACK_LOGIC);
+	regmap_update_bits(regmap,
+		NAU8824_REG_JACK_DET_CTRL, NAU8824_JACK_EJECT_DT_MASK,
+		(nau8824->jack_eject_debounce << NAU8824_JACK_EJECT_DT_SFT));
+	if (nau8824->sar_threshold_num)
+		nau8824_setup_buttons(nau8824);
+}
+
+static int nau8824_setup_irq(struct nau8824 *nau8824)
+{
+	/* Disable interruption before codec initiation done */
+	regmap_update_bits(nau8824->regmap, NAU8824_REG_ENA_CTRL,
+		NAU8824_JD_SLEEP_MODE, NAU8824_JD_SLEEP_MODE);
+	regmap_update_bits(nau8824->regmap,
+		NAU8824_REG_INTERRUPT_SETTING, 0x3ff, 0x3ff);
+	regmap_update_bits(nau8824->regmap, NAU8824_REG_INTERRUPT_SETTING_1,
+		NAU8824_IRQ_EJECT_EN | NAU8824_IRQ_INSERT_EN, 0);
+
+	return 0;
+}
+
+static void nau8824_print_device_properties(struct nau8824 *nau8824)
+{
+	struct device *dev = nau8824->dev;
+	int i;
+
+	dev_dbg(dev, "jkdet-polarity:       %d\n", nau8824->jkdet_polarity);
+	dev_dbg(dev, "micbias-voltage:      %d\n", nau8824->micbias_voltage);
+	dev_dbg(dev, "vref-impedance:       %d\n", nau8824->vref_impedance);
+
+	dev_dbg(dev, "sar-threshold-num:    %d\n", nau8824->sar_threshold_num);
+	for (i = 0; i < nau8824->sar_threshold_num; i++)
+		dev_dbg(dev, "sar-threshold[%d]=%x\n", i,
+				nau8824->sar_threshold[i]);
+
+	dev_dbg(dev, "sar-hysteresis:       %d\n", nau8824->sar_hysteresis);
+	dev_dbg(dev, "sar-voltage:          %d\n", nau8824->sar_voltage);
+	dev_dbg(dev, "sar-compare-time:     %d\n", nau8824->sar_compare_time);
+	dev_dbg(dev, "sar-sampling-time:    %d\n", nau8824->sar_sampling_time);
+	dev_dbg(dev, "short-key-debounce:   %d\n", nau8824->key_debounce);
+	dev_dbg(dev, "jack-eject-debounce:  %d\n",
+			nau8824->jack_eject_debounce);
+}
+
+static int nau8824_read_device_properties(struct device *dev,
+	struct nau8824 *nau8824) {
+	int ret;
+
+	ret = device_property_read_u32(dev, "nuvoton,jkdet-polarity",
+		&nau8824->jkdet_polarity);
+	if (ret)
+		nau8824->jkdet_polarity = 1;
+	ret = device_property_read_u32(dev, "nuvoton,micbias-voltage",
+		&nau8824->micbias_voltage);
+	if (ret)
+		nau8824->micbias_voltage = 6;
+	ret = device_property_read_u32(dev, "nuvoton,vref-impedance",
+		&nau8824->vref_impedance);
+	if (ret)
+		nau8824->vref_impedance = 2;
+	ret = device_property_read_u32(dev, "nuvoton,sar-threshold-num",
+		&nau8824->sar_threshold_num);
+	if (ret)
+		nau8824->sar_threshold_num = 4;
+	ret = device_property_read_u32_array(dev, "nuvoton,sar-threshold",
+		nau8824->sar_threshold, nau8824->sar_threshold_num);
+	if (ret) {
+		nau8824->sar_threshold[0] = 0x0a;
+		nau8824->sar_threshold[1] = 0x14;
+		nau8824->sar_threshold[2] = 0x26;
+		nau8824->sar_threshold[3] = 0x73;
+	}
+	ret = device_property_read_u32(dev, "nuvoton,sar-hysteresis",
+		&nau8824->sar_hysteresis);
+	if (ret)
+		nau8824->sar_hysteresis = 0;
+	ret = device_property_read_u32(dev, "nuvoton,sar-voltage",
+		&nau8824->sar_voltage);
+	if (ret)
+		nau8824->sar_voltage = 6;
+	ret = device_property_read_u32(dev, "nuvoton,sar-compare-time",
+		&nau8824->sar_compare_time);
+	if (ret)
+		nau8824->sar_compare_time = 1;
+	ret = device_property_read_u32(dev, "nuvoton,sar-sampling-time",
+		&nau8824->sar_sampling_time);
+	if (ret)
+		nau8824->sar_sampling_time = 1;
+	ret = device_property_read_u32(dev, "nuvoton,short-key-debounce",
+		&nau8824->key_debounce);
+	if (ret)
+		nau8824->key_debounce = 0;
+	ret = device_property_read_u32(dev, "nuvoton,jack-eject-debounce",
+		&nau8824->jack_eject_debounce);
+	if (ret)
+		nau8824->jack_eject_debounce = 1;
+
+	return 0;
+}
+
+static int nau8824_i2c_probe(struct i2c_client *i2c,
+	const struct i2c_device_id *id)
+{
+	struct device *dev = &i2c->dev;
+	struct nau8824 *nau8824 = dev_get_platdata(dev);
+	int ret, value;
+
+	if (!nau8824) {
+		nau8824 = devm_kzalloc(dev, sizeof(*nau8824), GFP_KERNEL);
+		if (!nau8824)
+			return -ENOMEM;
+		ret = nau8824_read_device_properties(dev, nau8824);
+		if (ret)
+			return ret;
+	}
+	i2c_set_clientdata(i2c, nau8824);
+
+	nau8824->regmap = devm_regmap_init_i2c(i2c, &nau8824_regmap_config);
+	if (IS_ERR(nau8824->regmap))
+		return PTR_ERR(nau8824->regmap);
+	nau8824->dev = dev;
+	nau8824->irq = i2c->irq;
+	sema_init(&nau8824->jd_sem, 1);
+
+	nau8824_print_device_properties(nau8824);
+
+	ret = regmap_read(nau8824->regmap, NAU8824_REG_I2C_DEVICE_ID, &value);
+	if (ret < 0) {
+		dev_err(dev, "Failed to read device id from the NAU8824: %d\n",
+			ret);
+		return ret;
+	}
+	nau8824_reset_chip(nau8824->regmap);
+	nau8824_init_regs(nau8824);
+
+	if (i2c->irq)
+		nau8824_setup_irq(nau8824);
+
+	return snd_soc_register_codec(dev,
+		&nau8824_codec_driver, &nau8824_dai, 1);
+}
+
+
+static int nau8824_i2c_remove(struct i2c_client *client)
+{
+	snd_soc_unregister_codec(&client->dev);
+	return 0;
+}
+
+static const struct i2c_device_id nau8824_i2c_ids[] = {
+	{ "nau8824", 0 },
+	{ }
+};
+MODULE_DEVICE_TABLE(i2c, nau8824_i2c_ids);
+
+#ifdef CONFIG_OF
+static const struct of_device_id nau8824_of_ids[] = {
+	{ .compatible = "nuvoton,nau8824", },
+	{}
+};
+MODULE_DEVICE_TABLE(of, nau8824_of_ids);
+#endif
+
+#ifdef CONFIG_ACPI
+static const struct acpi_device_id nau8824_acpi_match[] = {
+	{ "10508824", 0 },
+	{},
+};
+MODULE_DEVICE_TABLE(acpi, nau8824_acpi_match);
+#endif
+
+static struct i2c_driver nau8824_i2c_driver = {
+	.driver = {
+		.name = "nau8824",
+		.of_match_table = of_match_ptr(nau8824_of_ids),
+		.acpi_match_table = ACPI_PTR(nau8824_acpi_match),
+	},
+	.probe = nau8824_i2c_probe,
+	.remove = nau8824_i2c_remove,
+	.id_table = nau8824_i2c_ids,
+};
+module_i2c_driver(nau8824_i2c_driver);
+
+
+MODULE_DESCRIPTION("ASoC NAU88L24 driver");
+MODULE_AUTHOR("John Hsu <KCHSU0@nuvoton.com>");
+MODULE_LICENSE("GPL v2");