Merge branch 'linus' into timers/urgent, to pick up fixes

Signed-off-by: Ingo Molnar <mingo@kernel.org>

1 files changed, 1147 insertions, 109 deletions

diff --git a/sound/soc/codecs/nau8825.c b/sound/soc/codecs/nau8825.c
index 683769f0f246..5c9707ac4bbf 100644
--- a/sound/soc/codecs/nau8825.c
+++ b/sound/soc/codecs/nau8825.c
@@ -18,6 +18,7 @@
 #include <linux/clk.h>
 #include <linux/acpi.h>
 #include <linux/math64.h>
+#include <linux/semaphore.h>
 
 #include <sound/initval.h>
 #include <sound/tlv.h>
@@ -30,10 +31,22 @@
 
 #include "nau8825.h"
 
+
+#define NUVOTON_CODEC_DAI "nau8825-hifi"
+
 #define NAU_FREF_MAX 13500000
-#define NAU_FVCO_MAX 100000000
+#define NAU_FVCO_MAX 124000000
 #define NAU_FVCO_MIN 90000000
 
+/* cross talk suppression detection */
+#define LOG10_MAGIC 646456993
+#define GAIN_AUGMENT 22500
+#define SIDETONE_BASE 207000
+
+
+static int nau8825_configure_sysclk(struct nau8825 *nau8825,
+		int clk_id, unsigned int freq);
+
 struct nau8825_fll {
 	int mclk_src;
 	int ratio;
@@ -156,6 +169,661 @@ static const struct reg_default nau8825_reg_defaults[] = {
 	{ NAU8825_REG_CHARGE_PUMP, 0x0 },
 };
 
+/* register backup table when cross talk detection */
+static struct reg_default nau8825_xtalk_baktab[] = {
+	{ NAU8825_REG_ADC_DGAIN_CTRL, 0 },
+	{ NAU8825_REG_HSVOL_CTRL, 0 },
+	{ NAU8825_REG_DACL_CTRL, 0 },
+	{ NAU8825_REG_DACR_CTRL, 0 },
+};
+
+static const unsigned short logtable[256] = {
+	0x0000, 0x0171, 0x02e0, 0x044e, 0x05ba, 0x0725, 0x088e, 0x09f7,
+	0x0b5d, 0x0cc3, 0x0e27, 0x0f8a, 0x10eb, 0x124b, 0x13aa, 0x1508,
+	0x1664, 0x17bf, 0x1919, 0x1a71, 0x1bc8, 0x1d1e, 0x1e73, 0x1fc6,
+	0x2119, 0x226a, 0x23ba, 0x2508, 0x2656, 0x27a2, 0x28ed, 0x2a37,
+	0x2b80, 0x2cc8, 0x2e0f, 0x2f54, 0x3098, 0x31dc, 0x331e, 0x345f,
+	0x359f, 0x36de, 0x381b, 0x3958, 0x3a94, 0x3bce, 0x3d08, 0x3e41,
+	0x3f78, 0x40af, 0x41e4, 0x4319, 0x444c, 0x457f, 0x46b0, 0x47e1,
+	0x4910, 0x4a3f, 0x4b6c, 0x4c99, 0x4dc5, 0x4eef, 0x5019, 0x5142,
+	0x526a, 0x5391, 0x54b7, 0x55dc, 0x5700, 0x5824, 0x5946, 0x5a68,
+	0x5b89, 0x5ca8, 0x5dc7, 0x5ee5, 0x6003, 0x611f, 0x623a, 0x6355,
+	0x646f, 0x6588, 0x66a0, 0x67b7, 0x68ce, 0x69e4, 0x6af8, 0x6c0c,
+	0x6d20, 0x6e32, 0x6f44, 0x7055, 0x7165, 0x7274, 0x7383, 0x7490,
+	0x759d, 0x76aa, 0x77b5, 0x78c0, 0x79ca, 0x7ad3, 0x7bdb, 0x7ce3,
+	0x7dea, 0x7ef0, 0x7ff6, 0x80fb, 0x81ff, 0x8302, 0x8405, 0x8507,
+	0x8608, 0x8709, 0x8809, 0x8908, 0x8a06, 0x8b04, 0x8c01, 0x8cfe,
+	0x8dfa, 0x8ef5, 0x8fef, 0x90e9, 0x91e2, 0x92db, 0x93d2, 0x94ca,
+	0x95c0, 0x96b6, 0x97ab, 0x98a0, 0x9994, 0x9a87, 0x9b7a, 0x9c6c,
+	0x9d5e, 0x9e4f, 0x9f3f, 0xa02e, 0xa11e, 0xa20c, 0xa2fa, 0xa3e7,
+	0xa4d4, 0xa5c0, 0xa6ab, 0xa796, 0xa881, 0xa96a, 0xaa53, 0xab3c,
+	0xac24, 0xad0c, 0xadf2, 0xaed9, 0xafbe, 0xb0a4, 0xb188, 0xb26c,
+	0xb350, 0xb433, 0xb515, 0xb5f7, 0xb6d9, 0xb7ba, 0xb89a, 0xb97a,
+	0xba59, 0xbb38, 0xbc16, 0xbcf4, 0xbdd1, 0xbead, 0xbf8a, 0xc065,
+	0xc140, 0xc21b, 0xc2f5, 0xc3cf, 0xc4a8, 0xc580, 0xc658, 0xc730,
+	0xc807, 0xc8de, 0xc9b4, 0xca8a, 0xcb5f, 0xcc34, 0xcd08, 0xcddc,
+	0xceaf, 0xcf82, 0xd054, 0xd126, 0xd1f7, 0xd2c8, 0xd399, 0xd469,
+	0xd538, 0xd607, 0xd6d6, 0xd7a4, 0xd872, 0xd93f, 0xda0c, 0xdad9,
+	0xdba5, 0xdc70, 0xdd3b, 0xde06, 0xded0, 0xdf9a, 0xe063, 0xe12c,
+	0xe1f5, 0xe2bd, 0xe385, 0xe44c, 0xe513, 0xe5d9, 0xe69f, 0xe765,
+	0xe82a, 0xe8ef, 0xe9b3, 0xea77, 0xeb3b, 0xebfe, 0xecc1, 0xed83,
+	0xee45, 0xef06, 0xefc8, 0xf088, 0xf149, 0xf209, 0xf2c8, 0xf387,
+	0xf446, 0xf505, 0xf5c3, 0xf680, 0xf73e, 0xf7fb, 0xf8b7, 0xf973,
+	0xfa2f, 0xfaea, 0xfba5, 0xfc60, 0xfd1a, 0xfdd4, 0xfe8e, 0xff47
+};
+
+static struct snd_soc_dai *nau8825_get_codec_dai(struct nau8825 *nau8825)
+{
+	struct snd_soc_codec *codec = snd_soc_dapm_to_codec(nau8825->dapm);
+	struct snd_soc_component *component = &codec->component;
+	struct snd_soc_dai *codec_dai, *_dai;
+
+	list_for_each_entry_safe(codec_dai, _dai, &component->dai_list, list) {
+		if (!strncmp(codec_dai->name, NUVOTON_CODEC_DAI,
+			strlen(NUVOTON_CODEC_DAI)))
+			return codec_dai;
+	}
+	return NULL;
+}
+
+static bool nau8825_dai_is_active(struct nau8825 *nau8825)
+{
+	struct snd_soc_dai *codec_dai = nau8825_get_codec_dai(nau8825);
+
+	if (codec_dai) {
+		if (codec_dai->playback_active || codec_dai->capture_active)
+			return true;
+	}
+	return false;
+}
+
+/**
+ * nau8825_sema_acquire - acquire the semaphore of nau88l25
+ * @nau8825:  component to register the codec private data with
+ * @timeout: how long in jiffies to wait before failure or zero to wait
+ * until release
+ *
+ * Attempts to acquire the semaphore with number of jiffies. If no more
+ * tasks are allowed to acquire the semaphore, calling this function will
+ * put the task to sleep. If the semaphore is not released within the
+ * specified number of jiffies, this function returns.
+ * Acquires the semaphore without jiffies. If no more tasks are allowed
+ * to acquire the semaphore, calling this function will put the task to
+ * sleep until the semaphore is released.
+ * It returns if the semaphore was acquired.
+ */
+static void nau8825_sema_acquire(struct nau8825 *nau8825, long timeout)
+{
+	int ret;
+
+	if (timeout)
+		ret = down_timeout(&nau8825->xtalk_sem, timeout);
+	else
+		ret = down_interruptible(&nau8825->xtalk_sem);
+
+	if (ret < 0)
+		dev_warn(nau8825->dev, "Acquire semaphone fail\n");
+}
+
+/**
+ * nau8825_sema_release - release the semaphore of nau88l25
+ * @nau8825:  component to register the codec private data with
+ *
+ * Release the semaphore which may be called from any context and
+ * even by tasks which have never called down().
+ */
+static inline void nau8825_sema_release(struct nau8825 *nau8825)
+{
+	up(&nau8825->xtalk_sem);
+}
+
+/**
+ * nau8825_sema_reset - reset the semaphore for nau88l25
+ * @nau8825:  component to register the codec private data with
+ *
+ * Reset the counter of the semaphore. Call this function to restart
+ * a new round task management.
+ */
+static inline void nau8825_sema_reset(struct nau8825 *nau8825)
+{
+	nau8825->xtalk_sem.count = 1;
+}
+
+/**
+ * Ramp up the headphone volume change gradually to target level.
+ *
+ * @nau8825:  component to register the codec private data with
+ * @vol_from: the volume to start up
+ * @vol_to: the target volume
+ * @step: the volume span to move on
+ *
+ * The headphone volume is from 0dB to minimum -54dB and -1dB per step.
+ * If the volume changes sharp, there is a pop noise heard in headphone. We
+ * provide the function to ramp up the volume up or down by delaying 10ms
+ * per step.
+ */
+static void nau8825_hpvol_ramp(struct nau8825 *nau8825,
+	unsigned int vol_from, unsigned int vol_to, unsigned int step)
+{
+	unsigned int value, volume, ramp_up, from, to;
+
+	if (vol_from == vol_to || step == 0) {
+		return;
+	} else if (vol_from < vol_to) {
+		ramp_up = true;
+		from = vol_from;
+		to = vol_to;
+	} else {
+		ramp_up = false;
+		from = vol_to;
+		to = vol_from;
+	}
+	/* only handle volume from 0dB to minimum -54dB */
+	if (to > NAU8825_HP_VOL_MIN)
+		to = NAU8825_HP_VOL_MIN;
+
+	for (volume = from; volume < to; volume += step) {
+		if (ramp_up)
+			value = volume;
+		else
+			value = to - volume + from;
+		regmap_update_bits(nau8825->regmap, NAU8825_REG_HSVOL_CTRL,
+			NAU8825_HPL_VOL_MASK | NAU8825_HPR_VOL_MASK,
+			(value << NAU8825_HPL_VOL_SFT) | value);
+		usleep_range(10000, 10500);
+	}
+	if (ramp_up)
+		value = to;
+	else
+		value = from;
+	regmap_update_bits(nau8825->regmap, NAU8825_REG_HSVOL_CTRL,
+		NAU8825_HPL_VOL_MASK | NAU8825_HPR_VOL_MASK,
+		(value << NAU8825_HPL_VOL_SFT) | value);
+}
+
+/**
+ * Computes log10 of a value; the result is round off to 3 decimal. This func-
+ * tion takes reference to dvb-math. The source code locates as the following.
+ * Linux/drivers/media/dvb-core/dvb_math.c
+ *
+ * return log10(value) * 1000
+ */
+static u32 nau8825_intlog10_dec3(u32 value)
+{
+	u32 msb, logentry, significand, interpolation, log10val;
+	u64 log2val;
+
+	/* first detect the msb (count begins at 0) */
+	msb = fls(value) - 1;
+	/**
+	 *      now we use a logtable after the following method:
+	 *
+	 *      log2(2^x * y) * 2^24 = x * 2^24 + log2(y) * 2^24
+	 *      where x = msb and therefore 1 <= y < 2
+	 *      first y is determined by shifting the value left
+	 *      so that msb is bit 31
+	 *              0x00231f56 -> 0x8C7D5800
+	 *      the result is y * 2^31 -> "significand"
+	 *      then the highest 9 bits are used for a table lookup
+	 *      the highest bit is discarded because it's always set
+	 *      the highest nine bits in our example are 100011000
+	 *      so we would use the entry 0x18
+	 */
+	significand = value << (31 - msb);
+	logentry = (significand >> 23) & 0xff;
+	/**
+	 *      last step we do is interpolation because of the
+	 *      limitations of the log table the error is that part of
+	 *      the significand which isn't used for lookup then we
+	 *      compute the ratio between the error and the next table entry
+	 *      and interpolate it between the log table entry used and the
+	 *      next one the biggest error possible is 0x7fffff
+	 *      (in our example it's 0x7D5800)
+	 *      needed value for next table entry is 0x800000
+	 *      so the interpolation is
+	 *      (error / 0x800000) * (logtable_next - logtable_current)
+	 *      in the implementation the division is moved to the end for
+	 *      better accuracy there is also an overflow correction if
+	 *      logtable_next is 256
+	 */
+	interpolation = ((significand & 0x7fffff) *
+		((logtable[(logentry + 1) & 0xff] -
+		logtable[logentry]) & 0xffff)) >> 15;
+
+	log2val = ((msb << 24) + (logtable[logentry] << 8) + interpolation);
+	/**
+	 *      log10(x) = log2(x) * log10(2)
+	 */
+	log10val = (log2val * LOG10_MAGIC) >> 31;
+	/**
+	 *      the result is round off to 3 decimal
+	 */
+	return log10val / ((1 << 24) / 1000);
+}
+
+/**
+ * computes cross talk suppression sidetone gain.
+ *
+ * @sig_org: orignal signal level
+ * @sig_cros: cross talk signal level
+ *
+ * The orignal and cross talk signal vlues need to be characterized.
+ * Once these values have been characterized, this sidetone value
+ * can be converted to decibel with the equation below.
+ * sidetone = 20 * log (original signal level / crosstalk signal level)
+ *
+ * return cross talk sidetone gain
+ */
+static u32 nau8825_xtalk_sidetone(u32 sig_org, u32 sig_cros)
+{
+	u32 gain, sidetone;
+
+	if (unlikely(sig_org == 0) || unlikely(sig_cros == 0)) {
+		WARN_ON(1);
+		return 0;
+	}
+
+	sig_org = nau8825_intlog10_dec3(sig_org);
+	sig_cros = nau8825_intlog10_dec3(sig_cros);
+	if (sig_org >= sig_cros)
+		gain = (sig_org - sig_cros) * 20 + GAIN_AUGMENT;
+	else
+		gain = (sig_cros - sig_org) * 20 + GAIN_AUGMENT;
+	sidetone = SIDETONE_BASE - gain * 2;
+	sidetone /= 1000;
+
+	return sidetone;
+}
+
+static int nau8825_xtalk_baktab_index_by_reg(unsigned int reg)
+{
+	int index;
+
+	for (index = 0; index < ARRAY_SIZE(nau8825_xtalk_baktab); index++)
+		if (nau8825_xtalk_baktab[index].reg == reg)
+			return index;
+	return -EINVAL;
+}
+
+static void nau8825_xtalk_backup(struct nau8825 *nau8825)
+{
+	int i;
+
+	/* Backup some register values to backup table */
+	for (i = 0; i < ARRAY_SIZE(nau8825_xtalk_baktab); i++)
+		regmap_read(nau8825->regmap, nau8825_xtalk_baktab[i].reg,
+				&nau8825_xtalk_baktab[i].def);
+}
+
+static void nau8825_xtalk_restore(struct nau8825 *nau8825)
+{
+	int i, volume;
+
+	/* Restore register values from backup table; When the driver restores
+	 * the headphone volumem, it needs recover to original level gradually
+	 * with 3dB per step for less pop noise.
+	 */
+	for (i = 0; i < ARRAY_SIZE(nau8825_xtalk_baktab); i++) {
+		if (nau8825_xtalk_baktab[i].reg == NAU8825_REG_HSVOL_CTRL) {
+			/* Ramping up the volume change to reduce pop noise */
+			volume = nau8825_xtalk_baktab[i].def &
+				NAU8825_HPR_VOL_MASK;
+			nau8825_hpvol_ramp(nau8825, 0, volume, 3);
+			continue;
+		}
+		regmap_write(nau8825->regmap, nau8825_xtalk_baktab[i].reg,
+				nau8825_xtalk_baktab[i].def);
+	}
+}
+
+static void nau8825_xtalk_prepare_dac(struct nau8825 *nau8825)
+{
+	/* Enable power of DAC path */
+	regmap_update_bits(nau8825->regmap, NAU8825_REG_ENA_CTRL,
+		NAU8825_ENABLE_DACR | NAU8825_ENABLE_DACL |
+		NAU8825_ENABLE_ADC | NAU8825_ENABLE_ADC_CLK |
+		NAU8825_ENABLE_DAC_CLK, NAU8825_ENABLE_DACR |
+		NAU8825_ENABLE_DACL | NAU8825_ENABLE_ADC |
+		NAU8825_ENABLE_ADC_CLK | NAU8825_ENABLE_DAC_CLK);
+	/* Prevent startup click by letting charge pump to ramp up and
+	 * change bump enable
+	 */
+	regmap_update_bits(nau8825->regmap, NAU8825_REG_CHARGE_PUMP,
+		NAU8825_JAMNODCLOW | NAU8825_CHANRGE_PUMP_EN,
+		NAU8825_JAMNODCLOW | NAU8825_CHANRGE_PUMP_EN);
+	/* Enable clock sync of DAC and DAC clock */
+	regmap_update_bits(nau8825->regmap, NAU8825_REG_RDAC,
+		NAU8825_RDAC_EN | NAU8825_RDAC_CLK_EN |
+		NAU8825_RDAC_FS_BCLK_ENB,
+		NAU8825_RDAC_EN | NAU8825_RDAC_CLK_EN);
+	/* Power up output driver with 2 stage */
+	regmap_update_bits(nau8825->regmap, NAU8825_REG_POWER_UP_CONTROL,
+		NAU8825_POWERUP_INTEGR_R | NAU8825_POWERUP_INTEGR_L |
+		NAU8825_POWERUP_DRV_IN_R | NAU8825_POWERUP_DRV_IN_L,
+		NAU8825_POWERUP_INTEGR_R | NAU8825_POWERUP_INTEGR_L |
+		NAU8825_POWERUP_DRV_IN_R | NAU8825_POWERUP_DRV_IN_L);
+	regmap_update_bits(nau8825->regmap, NAU8825_REG_POWER_UP_CONTROL,
+		NAU8825_POWERUP_HP_DRV_R | NAU8825_POWERUP_HP_DRV_L,
+		NAU8825_POWERUP_HP_DRV_R | NAU8825_POWERUP_HP_DRV_L);
+	/* HP outputs not shouted to ground  */
+	regmap_update_bits(nau8825->regmap, NAU8825_REG_HSD_CTRL,
+		NAU8825_SPKR_DWN1R | NAU8825_SPKR_DWN1L, 0);
+	/* Enable HP boost driver */
+	regmap_update_bits(nau8825->regmap, NAU8825_REG_BOOST,
+		NAU8825_HP_BOOST_DIS, NAU8825_HP_BOOST_DIS);
+	/* Enable class G compare path to supply 1.8V or 0.9V. */
+	regmap_update_bits(nau8825->regmap, NAU8825_REG_CLASSG_CTRL,
+		NAU8825_CLASSG_LDAC_EN | NAU8825_CLASSG_RDAC_EN,
+		NAU8825_CLASSG_LDAC_EN | NAU8825_CLASSG_RDAC_EN);
+}
+
+static void nau8825_xtalk_prepare_adc(struct nau8825 *nau8825)
+{
+	/* Power up left ADC and raise 5dB than Vmid for Vref  */
+	regmap_update_bits(nau8825->regmap, NAU8825_REG_ANALOG_ADC_2,
+		NAU8825_POWERUP_ADCL | NAU8825_ADC_VREFSEL_MASK,
+		NAU8825_POWERUP_ADCL | NAU8825_ADC_VREFSEL_VMID_PLUS_0_5DB);
+}
+
+static void nau8825_xtalk_clock(struct nau8825 *nau8825)
+{
+	/* Recover FLL default value */
+	regmap_write(nau8825->regmap, NAU8825_REG_FLL1, 0x0);
+	regmap_write(nau8825->regmap, NAU8825_REG_FLL2, 0x3126);
+	regmap_write(nau8825->regmap, NAU8825_REG_FLL3, 0x0008);
+	regmap_write(nau8825->regmap, NAU8825_REG_FLL4, 0x0010);
+	regmap_write(nau8825->regmap, NAU8825_REG_FLL5, 0x0);
+	regmap_write(nau8825->regmap, NAU8825_REG_FLL6, 0x6000);
+	/* Enable internal VCO clock for detection signal generated */
+	regmap_update_bits(nau8825->regmap, NAU8825_REG_CLK_DIVIDER,
+		NAU8825_CLK_SRC_MASK, NAU8825_CLK_SRC_VCO);
+	regmap_update_bits(nau8825->regmap, NAU8825_REG_FLL6, NAU8825_DCO_EN,
+		NAU8825_DCO_EN);
+	/* Given specific clock frequency of internal clock to
+	 * generate signal.
+	 */
+	regmap_update_bits(nau8825->regmap, NAU8825_REG_CLK_DIVIDER,
+		NAU8825_CLK_MCLK_SRC_MASK, 0xf);
+	regmap_update_bits(nau8825->regmap, NAU8825_REG_FLL1,
+		NAU8825_FLL_RATIO_MASK, 0x10);
+}
+
+static void nau8825_xtalk_prepare(struct nau8825 *nau8825)
+{
+	int volume, index;
+
+	/* Backup those registers changed by cross talk detection */
+	nau8825_xtalk_backup(nau8825);
+	/* Config IIS as master to output signal by codec */
+	regmap_update_bits(nau8825->regmap, NAU8825_REG_I2S_PCM_CTRL2,
+		NAU8825_I2S_MS_MASK | NAU8825_I2S_DRV_MASK |
+		NAU8825_I2S_BLK_DIV_MASK, NAU8825_I2S_MS_MASTER |
+		(0x2 << NAU8825_I2S_DRV_SFT) | 0x1);
+	/* Ramp up headphone volume to 0dB to get better performance and
+	 * avoid pop noise in headphone.
+	 */
+	index = nau8825_xtalk_baktab_index_by_reg(NAU8825_REG_HSVOL_CTRL);
+	if (index != -EINVAL) {
+		volume = nau8825_xtalk_baktab[index].def &
+				NAU8825_HPR_VOL_MASK;
+		nau8825_hpvol_ramp(nau8825, volume, 0, 3);
+	}
+	nau8825_xtalk_clock(nau8825);
+	nau8825_xtalk_prepare_dac(nau8825);
+	nau8825_xtalk_prepare_adc(nau8825);
+	/* Config channel path and digital gain */
+	regmap_update_bits(nau8825->regmap, NAU8825_REG_DACL_CTRL,
+		NAU8825_DACL_CH_SEL_MASK | NAU8825_DACL_CH_VOL_MASK,
+		NAU8825_DACL_CH_SEL_L | 0xab);
+	regmap_update_bits(nau8825->regmap, NAU8825_REG_DACR_CTRL,
+		NAU8825_DACR_CH_SEL_MASK | NAU8825_DACR_CH_VOL_MASK,
+		NAU8825_DACR_CH_SEL_R | 0xab);
+	/* Config cross talk parameters and generate the 23Hz sine wave with
+	 * 1/16 full scale of signal level for impedance measurement.
+	 */
+	regmap_update_bits(nau8825->regmap, NAU8825_REG_IMM_MODE_CTRL,
+		NAU8825_IMM_THD_MASK | NAU8825_IMM_GEN_VOL_MASK |
+		NAU8825_IMM_CYC_MASK | NAU8825_IMM_DAC_SRC_MASK,
+		(0x9 << NAU8825_IMM_THD_SFT) | NAU8825_IMM_GEN_VOL_1_16th |
+		NAU8825_IMM_CYC_8192 | NAU8825_IMM_DAC_SRC_SIN);
+	/* RMS intrruption enable */
+	regmap_update_bits(nau8825->regmap,
+		NAU8825_REG_INTERRUPT_MASK, NAU8825_IRQ_RMS_EN, 0);
+	/* Power up left and right DAC */
+	regmap_update_bits(nau8825->regmap, NAU8825_REG_CHARGE_PUMP,
+		NAU8825_POWER_DOWN_DACR | NAU8825_POWER_DOWN_DACL, 0);
+}
+
+static void nau8825_xtalk_clean_dac(struct nau8825 *nau8825)
+{
+	/* Disable HP boost driver */
+	regmap_update_bits(nau8825->regmap, NAU8825_REG_BOOST,
+		NAU8825_HP_BOOST_DIS, 0);
+	/* HP outputs shouted to ground  */
+	regmap_update_bits(nau8825->regmap, NAU8825_REG_HSD_CTRL,
+		NAU8825_SPKR_DWN1R | NAU8825_SPKR_DWN1L,
+		NAU8825_SPKR_DWN1R | NAU8825_SPKR_DWN1L);
+	/* Power down left and right DAC */
+	regmap_update_bits(nau8825->regmap, NAU8825_REG_CHARGE_PUMP,
+		NAU8825_POWER_DOWN_DACR | NAU8825_POWER_DOWN_DACL,
+		NAU8825_POWER_DOWN_DACR | NAU8825_POWER_DOWN_DACL);
+	/* Enable the TESTDAC and  disable L/R HP impedance */
+	regmap_update_bits(nau8825->regmap, NAU8825_REG_BIAS_ADJ,
+		NAU8825_BIAS_HPR_IMP | NAU8825_BIAS_HPL_IMP |
+		NAU8825_BIAS_TESTDAC_EN, NAU8825_BIAS_TESTDAC_EN);
+	/* Power down output driver with 2 stage */
+	regmap_update_bits(nau8825->regmap, NAU8825_REG_POWER_UP_CONTROL,
+		NAU8825_POWERUP_HP_DRV_R | NAU8825_POWERUP_HP_DRV_L, 0);
+	regmap_update_bits(nau8825->regmap, NAU8825_REG_POWER_UP_CONTROL,
+		NAU8825_POWERUP_INTEGR_R | NAU8825_POWERUP_INTEGR_L |
+		NAU8825_POWERUP_DRV_IN_R | NAU8825_POWERUP_DRV_IN_L, 0);
+	/* Disable clock sync of DAC and DAC clock */
+	regmap_update_bits(nau8825->regmap, NAU8825_REG_RDAC,
+		NAU8825_RDAC_EN | NAU8825_RDAC_CLK_EN, 0);
+	/* Disable charge pump ramp up function and change bump */
+	regmap_update_bits(nau8825->regmap, NAU8825_REG_CHARGE_PUMP,
+		NAU8825_JAMNODCLOW | NAU8825_CHANRGE_PUMP_EN, 0);
+	/* Disable power of DAC path */
+	regmap_update_bits(nau8825->regmap, NAU8825_REG_ENA_CTRL,
+		NAU8825_ENABLE_DACR | NAU8825_ENABLE_DACL |
+		NAU8825_ENABLE_ADC_CLK | NAU8825_ENABLE_DAC_CLK, 0);
+	if (!nau8825->irq)
+		regmap_update_bits(nau8825->regmap,
+			NAU8825_REG_ENA_CTRL, NAU8825_ENABLE_ADC, 0);
+}
+
+static void nau8825_xtalk_clean_adc(struct nau8825 *nau8825)
+{
+	/* Power down left ADC and restore voltage to Vmid */
+	regmap_update_bits(nau8825->regmap, NAU8825_REG_ANALOG_ADC_2,
+		NAU8825_POWERUP_ADCL | NAU8825_ADC_VREFSEL_MASK, 0);
+}
+
+static void nau8825_xtalk_clean(struct nau8825 *nau8825)
+{
+	/* Enable internal VCO needed for interruptions */
+	nau8825_configure_sysclk(nau8825, NAU8825_CLK_INTERNAL, 0);
+	nau8825_xtalk_clean_dac(nau8825);
+	nau8825_xtalk_clean_adc(nau8825);
+	/* Clear cross talk parameters and disable */
+	regmap_write(nau8825->regmap, NAU8825_REG_IMM_MODE_CTRL, 0);
+	/* RMS intrruption disable */
+	regmap_update_bits(nau8825->regmap, NAU8825_REG_INTERRUPT_MASK,
+		NAU8825_IRQ_RMS_EN, NAU8825_IRQ_RMS_EN);
+	/* Recover default value for IIS */
+	regmap_update_bits(nau8825->regmap, NAU8825_REG_I2S_PCM_CTRL2,
+		NAU8825_I2S_MS_MASK | NAU8825_I2S_DRV_MASK |
+		NAU8825_I2S_BLK_DIV_MASK, NAU8825_I2S_MS_SLAVE);
+	/* Restore value of specific register for cross talk */
+	nau8825_xtalk_restore(nau8825);
+}
+
+static void nau8825_xtalk_imm_start(struct nau8825 *nau8825, int vol)
+{
+	/* Apply ADC volume for better cross talk performance */
+	regmap_update_bits(nau8825->regmap, NAU8825_REG_ADC_DGAIN_CTRL,
+				NAU8825_ADC_DIG_VOL_MASK, vol);
+	/* Disables JKTIP(HPL) DAC channel for right to left measurement.
+	 * Do it before sending signal in order to erase pop noise.
+	 */
+	regmap_update_bits(nau8825->regmap, NAU8825_REG_BIAS_ADJ,
+		NAU8825_BIAS_TESTDACR_EN | NAU8825_BIAS_TESTDACL_EN,
+		NAU8825_BIAS_TESTDACL_EN);
+	switch (nau8825->xtalk_state) {
+	case NAU8825_XTALK_HPR_R2L:
+		/* Enable right headphone impedance */
+		regmap_update_bits(nau8825->regmap, NAU8825_REG_BIAS_ADJ,
+			NAU8825_BIAS_HPR_IMP | NAU8825_BIAS_HPL_IMP,
+			NAU8825_BIAS_HPR_IMP);
+		break;
+	case NAU8825_XTALK_HPL_R2L:
+		/* Enable left headphone impedance */
+		regmap_update_bits(nau8825->regmap, NAU8825_REG_BIAS_ADJ,
+			NAU8825_BIAS_HPR_IMP | NAU8825_BIAS_HPL_IMP,
+			NAU8825_BIAS_HPL_IMP);
+		break;
+	default:
+		break;
+	}
+	msleep(100);
+	/* Impedance measurement mode enable */
+	regmap_update_bits(nau8825->regmap, NAU8825_REG_IMM_MODE_CTRL,
+				NAU8825_IMM_EN, NAU8825_IMM_EN);
+}
+
+static void nau8825_xtalk_imm_stop(struct nau8825 *nau8825)
+{
+	/* Impedance measurement mode disable */
+	regmap_update_bits(nau8825->regmap,
+		NAU8825_REG_IMM_MODE_CTRL, NAU8825_IMM_EN, 0);
+}
+
+/* The cross talk measurement function can reduce cross talk across the
+ * JKTIP(HPL) and JKR1(HPR) outputs which measures the cross talk signal
+ * level to determine what cross talk reduction gain is. This system works by
+ * sending a 23Hz -24dBV sine wave into the headset output DAC and through
+ * the PGA. The output of the PGA is then connected to an internal current
+ * sense which measures the attenuated 23Hz signal and passing the output to
+ * an ADC which converts the measurement to a binary code. With two separated
+ * measurement, one for JKR1(HPR) and the other JKTIP(HPL), measurement data
+ * can be separated read in IMM_RMS_L for HSR and HSL after each measurement.
+ * Thus, the measurement function has four states to complete whole sequence.
+ * 1. Prepare state : Prepare the resource for detection and transfer to HPR
+ *     IMM stat to make JKR1(HPR) impedance measure.
+ * 2. HPR IMM state : Read out orignal signal level of JKR1(HPR) and transfer
+ *     to HPL IMM state to make JKTIP(HPL) impedance measure.
+ * 3. HPL IMM state : Read out cross talk signal level of JKTIP(HPL) and
+ *     transfer to IMM state to determine suppression sidetone gain.
+ * 4. IMM state : Computes cross talk suppression sidetone gain with orignal
+ *     and cross talk signal level. Apply this gain and then restore codec
+ *     configuration. Then transfer to Done state for ending.
+ */
+static void nau8825_xtalk_measure(struct nau8825 *nau8825)
+{
+	u32 sidetone;
+
+	switch (nau8825->xtalk_state) {
+	case NAU8825_XTALK_PREPARE:
+		/* In prepare state, set up clock, intrruption, DAC path, ADC
+		 * path and cross talk detection parameters for preparation.
+		 */
+		nau8825_xtalk_prepare(nau8825);
+		msleep(280);
+		/* Trigger right headphone impedance detection */
+		nau8825->xtalk_state = NAU8825_XTALK_HPR_R2L;
+		nau8825_xtalk_imm_start(nau8825, 0x00d2);
+		break;
+	case NAU8825_XTALK_HPR_R2L:
+		/* In right headphone IMM state, read out right headphone
+		 * impedance measure result, and then start up left side.
+		 */
+		regmap_read(nau8825->regmap, NAU8825_REG_IMM_RMS_L,
+			&nau8825->imp_rms[NAU8825_XTALK_HPR_R2L]);
+		dev_dbg(nau8825->dev, "HPR_R2L imm: %x\n",
+			nau8825->imp_rms[NAU8825_XTALK_HPR_R2L]);
+		/* Disable then re-enable IMM mode to update */
+		nau8825_xtalk_imm_stop(nau8825);
+		/* Trigger left headphone impedance detection */
+		nau8825->xtalk_state = NAU8825_XTALK_HPL_R2L;
+		nau8825_xtalk_imm_start(nau8825, 0x00ff);
+		break;
+	case NAU8825_XTALK_HPL_R2L:
+		/* In left headphone IMM state, read out left headphone
+		 * impedance measure result, and delay some time to wait
+		 * detection sine wave output finish. Then, we can calculate
+		 * the cross talk suppresstion side tone according to the L/R
+		 * headphone imedance.
+		 */
+		regmap_read(nau8825->regmap, NAU8825_REG_IMM_RMS_L,
+			&nau8825->imp_rms[NAU8825_XTALK_HPL_R2L]);
+		dev_dbg(nau8825->dev, "HPL_R2L imm: %x\n",
+			nau8825->imp_rms[NAU8825_XTALK_HPL_R2L]);
+		nau8825_xtalk_imm_stop(nau8825);
+		msleep(150);
+		nau8825->xtalk_state = NAU8825_XTALK_IMM;
+		break;
+	case NAU8825_XTALK_IMM:
+		/* In impedance measure state, the orignal and cross talk
+		 * signal level vlues are ready. The side tone gain is deter-
+		 * mined with these signal level. After all, restore codec
+		 * configuration.
+		 */
+		sidetone = nau8825_xtalk_sidetone(
+			nau8825->imp_rms[NAU8825_XTALK_HPR_R2L],
+			nau8825->imp_rms[NAU8825_XTALK_HPL_R2L]);
+		dev_dbg(nau8825->dev, "cross talk sidetone: %x\n", sidetone);
+		regmap_write(nau8825->regmap, NAU8825_REG_DAC_DGAIN_CTRL,
+					(sidetone << 8) | sidetone);
+		nau8825_xtalk_clean(nau8825);
+		nau8825->xtalk_state = NAU8825_XTALK_DONE;
+		break;
+	default:
+		break;
+	}
+}
+
+static void nau8825_xtalk_work(struct work_struct *work)
+{
+	struct nau8825 *nau8825 = container_of(
+		work, struct nau8825, xtalk_work);
+
+	nau8825_xtalk_measure(nau8825);
+	/* To determine the cross talk side tone gain when reach
+	 * the impedance measure state.
+	 */
+	if (nau8825->xtalk_state == NAU8825_XTALK_IMM)
+		nau8825_xtalk_measure(nau8825);
+
+	/* Delay jack report until cross talk detection process
+	 * completed. It can avoid application to do playback
+	 * preparation before cross talk detection is still working.
+	 * Meanwhile, the protection of the cross talk detection
+	 * is released.
+	 */
+	if (nau8825->xtalk_state == NAU8825_XTALK_DONE) {
+		snd_soc_jack_report(nau8825->jack, nau8825->xtalk_event,
+				nau8825->xtalk_event_mask);
+		nau8825_sema_release(nau8825);
+		nau8825->xtalk_protect = false;
+	}
+}
+
+static void nau8825_xtalk_cancel(struct nau8825 *nau8825)
+{
+	/* If the xtalk_protect is true, that means the process is still
+	 * on going. The driver forces to cancel the cross talk task and
+	 * restores the configuration to original status.
+	 */
+	if (nau8825->xtalk_protect) {
+		cancel_work_sync(&nau8825->xtalk_work);
+		nau8825_xtalk_clean(nau8825);
+	}
+	/* Reset parameters for cross talk suppression function */
+	nau8825_sema_reset(nau8825);
+	nau8825->xtalk_state = NAU8825_XTALK_DONE;
+	nau8825->xtalk_protect = false;
+}
+
 static bool nau8825_readable_reg(struct device *dev, unsigned int reg)
 {
 	switch (reg) {
@@ -217,12 +885,36 @@ static bool nau8825_volatile_reg(struct device *dev, unsigned int reg)
 	case NAU8825_REG_SARDOUT_RAM_STATUS:
 	case NAU8825_REG_CHARGE_PUMP_INPUT_READ:
 	case NAU8825_REG_GENERAL_STATUS:
+	case NAU8825_REG_BIQ_CTRL ... NAU8825_REG_BIQ_COF10:
 		return true;
 	default:
 		return false;
 	}
 }
 
+static int nau8825_adc_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 nau8825 *nau8825 = snd_soc_codec_get_drvdata(codec);
+
+	switch (event) {
+	case SND_SOC_DAPM_POST_PMU:
+		regmap_update_bits(nau8825->regmap, NAU8825_REG_ENA_CTRL,
+			NAU8825_ENABLE_ADC, NAU8825_ENABLE_ADC);
+		break;
+	case SND_SOC_DAPM_POST_PMD:
+		if (!nau8825->irq)
+			regmap_update_bits(nau8825->regmap,
+				NAU8825_REG_ENA_CTRL, NAU8825_ENABLE_ADC, 0);
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
 static int nau8825_pump_event(struct snd_soc_dapm_widget *w,
 	struct snd_kcontrol *kcontrol, int event)
 {
@@ -270,6 +962,54 @@ static int nau8825_output_dac_event(struct snd_soc_dapm_widget *w,
 	return 0;
 }
 
+static int nau8825_biq_coeff_get(struct snd_kcontrol *kcontrol,
+				     struct snd_ctl_elem_value *ucontrol)
+{
+	struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
+	struct soc_bytes_ext *params = (void *)kcontrol->private_value;
+
+	if (!component->regmap)
+		return -EINVAL;
+
+	regmap_raw_read(component->regmap, NAU8825_REG_BIQ_COF1,
+		ucontrol->value.bytes.data, params->max);
+	return 0;
+}
+
+static int nau8825_biq_coeff_put(struct snd_kcontrol *kcontrol,
+				     struct snd_ctl_elem_value *ucontrol)
+{
+	struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
+	struct soc_bytes_ext *params = (void *)kcontrol->private_value;
+	void *data;
+
+	if (!component->regmap)
+		return -EINVAL;
+
+	data = kmemdup(ucontrol->value.bytes.data,
+		params->max, GFP_KERNEL | GFP_DMA);
+	if (!data)
+		return -ENOMEM;
+
+	regmap_update_bits(component->regmap, NAU8825_REG_BIQ_CTRL,
+		NAU8825_BIQ_WRT_EN, 0);
+	regmap_raw_write(component->regmap, NAU8825_REG_BIQ_COF1,
+		data, params->max);
+	regmap_update_bits(component->regmap, NAU8825_REG_BIQ_CTRL,
+		NAU8825_BIQ_WRT_EN, NAU8825_BIQ_WRT_EN);
+
+	kfree(data);
+	return 0;
+}
+
+static const char * const nau8825_biq_path[] = {
+	"ADC", "DAC"
+};
+
+static const struct soc_enum nau8825_biq_path_enum =
+	SOC_ENUM_SINGLE(NAU8825_REG_BIQ_CTRL, NAU8825_BIQ_PATH_SFT,
+		ARRAY_SIZE(nau8825_biq_path), nau8825_biq_path);
+
 static const char * const nau8825_adc_decimation[] = {
 	"32", "64", "128", "256"
 };
@@ -306,6 +1046,10 @@ static const struct snd_kcontrol_new nau8825_controls[] = {
 
 	SOC_ENUM("ADC Decimation Rate", nau8825_adc_decimation_enum),
 	SOC_ENUM("DAC Oversampling Rate", nau8825_dac_oversampl_enum),
+	/* programmable biquad filter */
+	SOC_ENUM("BIQ Path Select", nau8825_biq_path_enum),
+	SND_SOC_BYTES_EXT("BIQ Coefficients", 20,
+		  nau8825_biq_coeff_get, nau8825_biq_coeff_put),
 };
 
 /* DAC Mux 0x33[9] and 0x34[9] */
@@ -338,7 +1082,9 @@ static const struct snd_soc_dapm_widget nau8825_dapm_widgets[] = {
 	SND_SOC_DAPM_PGA("Frontend PGA", NAU8825_REG_POWER_UP_CONTROL, 14, 0,
 		NULL, 0),
 
-	SND_SOC_DAPM_ADC("ADC", NULL, NAU8825_REG_ENA_CTRL, 8, 0),
+	SND_SOC_DAPM_ADC_E("ADC", NULL, SND_SOC_NOPM, 0, 0,
+		nau8825_adc_event, SND_SOC_DAPM_POST_PMU |
+		SND_SOC_DAPM_POST_PMD),
 	SND_SOC_DAPM_SUPPLY("ADC Clock", NAU8825_REG_ENA_CTRL, 7, 0, NULL, 0),
 	SND_SOC_DAPM_SUPPLY("ADC Power", NAU8825_REG_ANALOG_ADC_2, 6, 0, NULL,
 		0),
@@ -592,9 +1338,6 @@ int nau8825_enable_jack_detect(struct snd_soc_codec *codec,
 		NAU8825_HSD_AUTO_MODE | NAU8825_SPKR_DWN1R | NAU8825_SPKR_DWN1L,
 		NAU8825_HSD_AUTO_MODE | NAU8825_SPKR_DWN1R | NAU8825_SPKR_DWN1L);
 
-	regmap_update_bits(regmap, NAU8825_REG_INTERRUPT_MASK,
-		NAU8825_IRQ_HEADSET_COMPLETE_EN | NAU8825_IRQ_EJECT_EN, 0);
-
 	return 0;
 }
 EXPORT_SYMBOL_GPL(nau8825_enable_jack_detect);
@@ -602,24 +1345,21 @@ EXPORT_SYMBOL_GPL(nau8825_enable_jack_detect);
 
 static bool nau8825_is_jack_inserted(struct regmap *regmap)
 {
-	int status;
+	bool active_high, is_high;
+	int status, jkdet;
 
+	regmap_read(regmap, NAU8825_REG_JACK_DET_CTRL, &jkdet);
+	active_high = jkdet & NAU8825_JACK_POLARITY;
 	regmap_read(regmap, NAU8825_REG_I2C_DEVICE_ID, &status);
-	return !(status & NAU8825_GPIO2JD1);
+	is_high = status & NAU8825_GPIO2JD1;
+	/* return jack connection status according to jack insertion logic
+	 * active high or active low.
+	 */
+	return active_high == is_high;
 }
 
 static void nau8825_restart_jack_detection(struct regmap *regmap)
 {
-	/* Chip needs one FSCLK cycle in order to generate interrupts,
-	 * as we cannot guarantee one will be provided by the system. Turning
-	 * master mode on then off enables us to generate that FSCLK cycle
-	 * with a minimum of contention on the clock bus.
-	 */
-	regmap_update_bits(regmap, NAU8825_REG_I2S_PCM_CTRL2,
-		NAU8825_I2S_MS_MASK, NAU8825_I2S_MS_MASTER);
-	regmap_update_bits(regmap, NAU8825_REG_I2S_PCM_CTRL2,
-		NAU8825_I2S_MS_MASK, NAU8825_I2S_MS_SLAVE);
-
 	/* this will restart the entire jack detection process including MIC/GND
 	 * switching and create interrupts. We have to go from 0 to 1 and back
 	 * to 0 to restart.
@@ -630,11 +1370,30 @@ static void nau8825_restart_jack_detection(struct regmap *regmap)
 		NAU8825_JACK_DET_RESTART, 0);
 }
 
+static void nau8825_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, NAU8825_REG_IRQ_STATUS, &active_irq);
+	for (i = 0; i < NAU8825_REG_DATA_LEN; i++) {
+		clear_irq = (0x1 << i);
+		if (active_irq & clear_irq)
+			regmap_write(regmap,
+				NAU8825_REG_INT_CLR_KEY_STATUS, clear_irq);
+	}
+}
+
 static void nau8825_eject_jack(struct nau8825 *nau8825)
 {
 	struct snd_soc_dapm_context *dapm = nau8825->dapm;
 	struct regmap *regmap = nau8825->regmap;
 
+	/* Force to cancel the cross talk detection process */
+	nau8825_xtalk_cancel(nau8825);
+
 	snd_soc_dapm_disable_pin(dapm, "SAR");
 	snd_soc_dapm_disable_pin(dapm, "MICBIAS");
 	/* Detach 2kOhm Resistors from MICBIAS to MICGND1/2 */
@@ -644,6 +1403,69 @@ static void nau8825_eject_jack(struct nau8825 *nau8825)
 	regmap_update_bits(regmap, NAU8825_REG_HSD_CTRL, 0xf, 0xf);
 
 	snd_soc_dapm_sync(dapm);
+
+	/* Clear all interruption status */
+	nau8825_int_status_clear_all(regmap);
+
+	/* Enable the insertion interruption, disable the ejection inter-
+	 * ruption, and then bypass de-bounce circuit.
+	 */
+	regmap_update_bits(regmap, NAU8825_REG_INTERRUPT_DIS_CTRL,
+		NAU8825_IRQ_EJECT_DIS | NAU8825_IRQ_INSERT_DIS,
+		NAU8825_IRQ_EJECT_DIS);
+	regmap_update_bits(regmap, NAU8825_REG_INTERRUPT_MASK,
+		NAU8825_IRQ_OUTPUT_EN | NAU8825_IRQ_EJECT_EN |
+		NAU8825_IRQ_HEADSET_COMPLETE_EN | NAU8825_IRQ_INSERT_EN,
+		NAU8825_IRQ_OUTPUT_EN | NAU8825_IRQ_EJECT_EN |
+		NAU8825_IRQ_HEADSET_COMPLETE_EN);
+	regmap_update_bits(regmap, NAU8825_REG_JACK_DET_CTRL,
+		NAU8825_JACK_DET_DB_BYPASS, NAU8825_JACK_DET_DB_BYPASS);
+
+	/* Disable ADC needed for interruptions at audo mode */
+	regmap_update_bits(regmap, NAU8825_REG_ENA_CTRL,
+		NAU8825_ENABLE_ADC, 0);
+
+	/* Close clock for jack type detection at manual mode */
+	nau8825_configure_sysclk(nau8825, NAU8825_CLK_DIS, 0);
+}
+
+/* Enable audo mode interruptions with internal clock. */
+static void nau8825_setup_auto_irq(struct nau8825 *nau8825)
+{
+	struct regmap *regmap = nau8825->regmap;
+
+	/* Enable headset jack type detection complete interruption and
+	 * jack ejection interruption.
+	 */
+	regmap_update_bits(regmap, NAU8825_REG_INTERRUPT_MASK,
+		NAU8825_IRQ_HEADSET_COMPLETE_EN | NAU8825_IRQ_EJECT_EN, 0);
+
+	/* Enable internal VCO needed for interruptions */
+	nau8825_configure_sysclk(nau8825, NAU8825_CLK_INTERNAL, 0);
+
+	/* Enable ADC needed for interruptions */
+	regmap_update_bits(regmap, NAU8825_REG_ENA_CTRL,
+		NAU8825_ENABLE_ADC, NAU8825_ENABLE_ADC);
+
+	/* Chip needs one FSCLK cycle in order to generate interruptions,
+	 * as we cannot guarantee one will be provided by the system. Turning
+	 * master mode on then off enables us to generate that FSCLK cycle
+	 * with a minimum of contention on the clock bus.
+	 */
+	regmap_update_bits(regmap, NAU8825_REG_I2S_PCM_CTRL2,
+		NAU8825_I2S_MS_MASK, NAU8825_I2S_MS_MASTER);
+	regmap_update_bits(regmap, NAU8825_REG_I2S_PCM_CTRL2,
+		NAU8825_I2S_MS_MASK, NAU8825_I2S_MS_SLAVE);
+
+	/* Not bypass de-bounce circuit */
+	regmap_update_bits(regmap, NAU8825_REG_JACK_DET_CTRL,
+		NAU8825_JACK_DET_DB_BYPASS, 0);
+
+	/* Unmask all interruptions */
+	regmap_write(regmap, NAU8825_REG_INTERRUPT_DIS_CTRL, 0);
+
+	/* Restart the jack detection process at auto mode */
+	nau8825_restart_jack_detection(regmap);
 }
 
 static int nau8825_button_decode(int value)
@@ -676,6 +1498,11 @@ static int nau8825_jack_insert(struct nau8825 *nau8825)
 
 	regmap_read(regmap, NAU8825_REG_GENERAL_STATUS, &jack_status_reg);
 	mic_detected = (jack_status_reg >> 10) & 3;
+	/* The JKSLV and JKR2 all detected in high impedance headset */
+	if (mic_detected == 0x3)
+		nau8825->high_imped = true;
+	else
+		nau8825->high_imped = false;
 
 	switch (mic_detected) {
 	case 0:
@@ -773,6 +1600,33 @@ static irqreturn_t nau8825_interrupt(int irq, void *data)
 	} else if (active_irq & NAU8825_HEADSET_COMPLETION_IRQ) {
 		if (nau8825_is_jack_inserted(regmap)) {
 			event |= nau8825_jack_insert(nau8825);
+			if (!nau8825->high_imped) {
+				/* Apply the cross talk suppression in the
+				 * headset without high impedance.
+				 */
+				if (!nau8825->xtalk_protect) {
+					/* Raise protection for cross talk de-
+					 * tection if no protection before.
+					 * The driver has to cancel the pro-
+					 * cess and restore changes if process
+					 * is ongoing when ejection.
+					 */
+					nau8825->xtalk_protect = true;
+					nau8825_sema_acquire(nau8825, 0);
+				}
+				/* Startup cross talk detection process */
+				nau8825->xtalk_state = NAU8825_XTALK_PREPARE;
+				schedule_work(&nau8825->xtalk_work);
+			} else {
+				/* The cross talk suppression shouldn't apply
+				 * in the headset with high impedance. Thus,
+				 * relieve the protection raised before.
+				 */
+				if (nau8825->xtalk_protect) {
+					nau8825_sema_release(nau8825);
+					nau8825->xtalk_protect = false;
+				}
+			}
 		} else {
 			dev_warn(nau8825->dev, "Headset completion IRQ fired but no headset connected\n");
 			nau8825_eject_jack(nau8825);
@@ -780,6 +1634,37 @@ static irqreturn_t nau8825_interrupt(int irq, void *data)
 
 		event_mask |= SND_JACK_HEADSET;
 		clear_irq = NAU8825_HEADSET_COMPLETION_IRQ;
+		/* Record the interruption report event for driver to report
+		 * the event later. The jack report will delay until cross
+		 * talk detection process is done.
+		 */
+		if (nau8825->xtalk_state == NAU8825_XTALK_PREPARE) {
+			nau8825->xtalk_event = event;
+			nau8825->xtalk_event_mask = event_mask;
+		}
+	} else if (active_irq & NAU8825_IMPEDANCE_MEAS_IRQ) {
+		schedule_work(&nau8825->xtalk_work);
+		clear_irq = NAU8825_IMPEDANCE_MEAS_IRQ;
+	} else if ((active_irq & NAU8825_JACK_INSERTION_IRQ_MASK) ==
+		NAU8825_JACK_INSERTION_DETECTED) {
+		/* One more step to check GPIO status directly. Thus, the
+		 * driver can confirm the real insertion interruption because
+		 * the intrruption at manual mode has bypassed debounce
+		 * circuit which can get rid of unstable status.
+		 */
+		if (nau8825_is_jack_inserted(regmap)) {
+			/* Turn off insertion interruption at manual mode */
+			regmap_update_bits(regmap,
+				NAU8825_REG_INTERRUPT_DIS_CTRL,
+				NAU8825_IRQ_INSERT_DIS,
+				NAU8825_IRQ_INSERT_DIS);
+			regmap_update_bits(regmap, NAU8825_REG_INTERRUPT_MASK,
+				NAU8825_IRQ_INSERT_EN, NAU8825_IRQ_INSERT_EN);
+			/* Enable interruption for jack type detection at audo
+			 * mode which can detect microphone and jack type.
+			 */
+			nau8825_setup_auto_irq(nau8825);
+		}
 	}
 
 	if (!clear_irq)
@@ -787,7 +1672,12 @@ static irqreturn_t nau8825_interrupt(int irq, void *data)
 	/* clears the rightmost interruption */
 	regmap_write(regmap, NAU8825_REG_INT_CLR_KEY_STATUS, clear_irq);
 
-	if (event_mask)
+	/* Delay jack report until cross talk detection is done. It can avoid
+	 * application to do playback preparation when cross talk detection
+	 * process is still working. Otherwise, the resource like clock and
+	 * power will be issued by them at the same time and conflict happens.
+	 */
+	if (event_mask && nau8825->xtalk_state == NAU8825_XTALK_DONE)
 		snd_soc_jack_report(nau8825->jack, event, event_mask);
 
 	return IRQ_HANDLED;
@@ -921,11 +1811,16 @@ static void nau8825_init_regs(struct nau8825 *nau8825)
 		NAU8825_RDAC_CLK_DELAY_MASK | NAU8825_RDAC_VREF_MASK,
 		(0x2 << NAU8825_RDAC_CLK_DELAY_SFT) |
 		(0x3 << NAU8825_RDAC_VREF_SFT));
+	/* Config L/R channel */
+	regmap_update_bits(nau8825->regmap, NAU8825_REG_DACL_CTRL,
+		NAU8825_DACL_CH_SEL_MASK, NAU8825_DACL_CH_SEL_L);
+	regmap_update_bits(nau8825->regmap, NAU8825_REG_DACR_CTRL,
+		NAU8825_DACL_CH_SEL_MASK, NAU8825_DACL_CH_SEL_R);
 }
 
 static const struct regmap_config nau8825_regmap_config = {
-	.val_bits = 16,
-	.reg_bits = 16,
+	.val_bits = NAU8825_REG_DATA_LEN,
+	.reg_bits = NAU8825_REG_ADDR_LEN,
 
 	.max_register = NAU8825_REG_MAX,
 	.readable_reg = nau8825_readable_reg,
@@ -944,18 +1839,15 @@ static int nau8825_codec_probe(struct snd_soc_codec *codec)
 
 	nau8825->dapm = dapm;
 
-	/* The interrupt clock is gated by x1[10:8],
-	 * one of them needs to be enabled all the time for
-	 * interrupts to happen.
-	 */
-	snd_soc_dapm_force_enable_pin(dapm, "DDACR");
-	snd_soc_dapm_sync(dapm);
+	return 0;
+}
 
-	/* Unmask interruptions. Handler uses dapm object so we can enable
-	 * interruptions only after dapm is fully initialized.
-	 */
-	regmap_write(nau8825->regmap, NAU8825_REG_INTERRUPT_DIS_CTRL, 0);
-	nau8825_restart_jack_detection(nau8825->regmap);
+static int nau8825_codec_remove(struct snd_soc_codec *codec)
+{
+	struct nau8825 *nau8825 = snd_soc_codec_get_drvdata(codec);
+
+	/* Cancel and reset cross tak suppresstion detection funciton */
+	nau8825_xtalk_cancel(nau8825);
 
 	return 0;
 }
@@ -973,8 +1865,8 @@ static int nau8825_codec_probe(struct snd_soc_codec *codec)
 static int nau8825_calc_fll_param(unsigned int fll_in, unsigned int fs,
 		struct nau8825_fll *fll_param)
 {
-	u64 fvco;
-	unsigned int fref, i;
+	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.
@@ -999,18 +1891,23 @@ static int nau8825_calc_fll_param(unsigned int fll_in, unsigned int fs,
 	fll_param->ratio = fll_ratio[i].val;
 
 	/* Calculate the frequency of DCO (FDCO) given freq_out = 256 * Fs.
-	 * FDCO must be within the 90MHz - 100MHz or the FFL cannot be
+	 * 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 (NAU_FVCO_MIN < fvco && fvco < NAU_FVCO_MAX)
-			break;
+		if (fvco > NAU_FVCO_MIN && fvco < NAU_FVCO_MAX &&
+			fvco_max < fvco) {
+			fvco_max = fvco;
+			fvco_sel = i;
+		}
 	}
-	if (i == ARRAY_SIZE(mclk_src_scaling))
+	if (ARRAY_SIZE(mclk_src_scaling) == fvco_sel)
 		return -EINVAL;
-	fll_param->mclk_src = mclk_src_scaling[i].val;
+	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.
@@ -1025,7 +1922,8 @@ static void nau8825_fll_apply(struct nau8825 *nau8825,
 		struct nau8825_fll *fll_param)
 {
 	regmap_update_bits(nau8825->regmap, NAU8825_REG_CLK_DIVIDER,
-		NAU8825_CLK_MCLK_SRC_MASK, fll_param->mclk_src);
+		NAU8825_CLK_SRC_MASK | NAU8825_CLK_MCLK_SRC_MASK,
+		NAU8825_CLK_SRC_MCLK | fll_param->mclk_src);
 	regmap_update_bits(nau8825->regmap, NAU8825_REG_FLL1,
 			NAU8825_FLL_RATIO_MASK, fll_param->ratio);
 	/* FLL 16-bit fractional input */
@@ -1038,10 +1936,25 @@ static void nau8825_fll_apply(struct nau8825 *nau8825,
 			NAU8825_FLL_REF_DIV_MASK, fll_param->clk_ref_div);
 	/* select divided VCO input */
 	regmap_update_bits(nau8825->regmap, NAU8825_REG_FLL5,
-			NAU8825_FLL_FILTER_SW_MASK, 0x0000);
-	/* FLL sigma delta modulator enable */
-	regmap_update_bits(nau8825->regmap, NAU8825_REG_FLL6,
-			NAU8825_SDM_EN_MASK, NAU8825_SDM_EN);
+		NAU8825_FLL_CLK_SW_MASK, NAU8825_FLL_CLK_SW_REF);
+	/* Disable free-running mode */
+	regmap_update_bits(nau8825->regmap,
+		NAU8825_REG_FLL6, NAU8825_DCO_EN, 0);
+	if (fll_param->fll_frac) {
+		regmap_update_bits(nau8825->regmap, NAU8825_REG_FLL5,
+			NAU8825_FLL_PDB_DAC_EN | NAU8825_FLL_LOOP_FTR_EN |
+			NAU8825_FLL_FTR_SW_MASK,
+			NAU8825_FLL_PDB_DAC_EN | NAU8825_FLL_LOOP_FTR_EN |
+			NAU8825_FLL_FTR_SW_FILTER);
+		regmap_update_bits(nau8825->regmap, NAU8825_REG_FLL6,
+			NAU8825_SDM_EN, NAU8825_SDM_EN);
+	} else {
+		regmap_update_bits(nau8825->regmap, NAU8825_REG_FLL5,
+			NAU8825_FLL_PDB_DAC_EN | NAU8825_FLL_LOOP_FTR_EN |
+			NAU8825_FLL_FTR_SW_MASK, NAU8825_FLL_FTR_SW_ACCU);
+		regmap_update_bits(nau8825->regmap,
+			NAU8825_REG_FLL6, NAU8825_SDM_EN, 0);
+	}
 }
 
 /* freq_out must be 256*Fs in order to achieve the best performance */
@@ -1069,6 +1982,45 @@ static int nau8825_set_pll(struct snd_soc_codec *codec, int pll_id, int source,
 	return 0;
 }
 
+static int nau8825_mclk_prepare(struct nau8825 *nau8825, unsigned int freq)
+{
+	int ret = 0;
+
+	nau8825->mclk = devm_clk_get(nau8825->dev, "mclk");
+	if (IS_ERR(nau8825->mclk)) {
+		dev_info(nau8825->dev, "No 'mclk' clock found, assume MCLK is managed externally");
+		return 0;
+	}
+
+	if (!nau8825->mclk_freq) {
+		ret = clk_prepare_enable(nau8825->mclk);
+		if (ret) {
+			dev_err(nau8825->dev, "Unable to prepare codec mclk\n");
+			return ret;
+		}
+	}
+
+	if (nau8825->mclk_freq != freq) {
+		freq = clk_round_rate(nau8825->mclk, freq);
+		ret = clk_set_rate(nau8825->mclk, freq);
+		if (ret) {
+			dev_err(nau8825->dev, "Unable to set mclk rate\n");
+			return ret;
+		}
+		nau8825->mclk_freq = freq;
+	}
+
+	return 0;
+}
+
+static void nau8825_configure_mclk_as_sysclk(struct regmap *regmap)
+{
+	regmap_update_bits(regmap, NAU8825_REG_CLK_DIVIDER,
+		NAU8825_CLK_SRC_MASK, NAU8825_CLK_SRC_MCLK);
+	regmap_update_bits(regmap, NAU8825_REG_FLL6,
+		NAU8825_DCO_EN, 0);
+}
+
 static int nau8825_configure_sysclk(struct nau8825 *nau8825, int clk_id,
 	unsigned int freq)
 {
@@ -1076,40 +2028,106 @@ static int nau8825_configure_sysclk(struct nau8825 *nau8825, int clk_id,
 	int ret;
 
 	switch (clk_id) {
+	case NAU8825_CLK_DIS:
+		/* Clock provided externally and disable internal VCO clock */
+		nau8825_configure_mclk_as_sysclk(regmap);
+		if (nau8825->mclk_freq) {
+			clk_disable_unprepare(nau8825->mclk);
+			nau8825->mclk_freq = 0;
+		}
+
+		break;
 	case NAU8825_CLK_MCLK:
+		/* Acquire the semaphone to synchronize the playback and
+		 * interrupt handler. In order to avoid the playback inter-
+		 * fered by cross talk process, the driver make the playback
+		 * preparation halted until cross talk process finish.
+		 */
+		nau8825_sema_acquire(nau8825, 2 * HZ);
+		nau8825_configure_mclk_as_sysclk(regmap);
+		/* MCLK not changed by clock tree */
 		regmap_update_bits(regmap, NAU8825_REG_CLK_DIVIDER,
-			NAU8825_CLK_SRC_MASK, NAU8825_CLK_SRC_MCLK);
-		regmap_update_bits(regmap, NAU8825_REG_FLL6, NAU8825_DCO_EN, 0);
+			NAU8825_CLK_MCLK_SRC_MASK, 0);
+		/* Release the semaphone. */
+		nau8825_sema_release(nau8825);
 
-		/* We selected MCLK source but the clock itself managed externally */
-		if (!nau8825->mclk)
-			break;
+		ret = nau8825_mclk_prepare(nau8825, freq);
+		if (ret)
+			return ret;
 
-		if (!nau8825->mclk_freq) {
-			ret = clk_prepare_enable(nau8825->mclk);
-			if (ret) {
-				dev_err(nau8825->dev, "Unable to prepare codec mclk\n");
-				return ret;
-			}
+		break;
+	case NAU8825_CLK_INTERNAL:
+		if (nau8825_is_jack_inserted(nau8825->regmap)) {
+			regmap_update_bits(regmap, NAU8825_REG_FLL6,
+				NAU8825_DCO_EN, NAU8825_DCO_EN);
+			regmap_update_bits(regmap, NAU8825_REG_CLK_DIVIDER,
+				NAU8825_CLK_SRC_MASK, NAU8825_CLK_SRC_VCO);
+			/* Decrease the VCO frequency for power saving */
+			regmap_update_bits(regmap, NAU8825_REG_CLK_DIVIDER,
+				NAU8825_CLK_MCLK_SRC_MASK, 0xf);
+			regmap_update_bits(regmap, NAU8825_REG_FLL1,
+				NAU8825_FLL_RATIO_MASK, 0x10);
+			regmap_update_bits(regmap, NAU8825_REG_FLL6,
+				NAU8825_SDM_EN, NAU8825_SDM_EN);
+		} else {
+			/* The clock turns off intentionally for power saving
+			 * when no headset connected.
+			 */
+			nau8825_configure_mclk_as_sysclk(regmap);
+			dev_warn(nau8825->dev, "Disable clock for power saving when no headset connected\n");
+		}
+		if (nau8825->mclk_freq) {
+			clk_disable_unprepare(nau8825->mclk);
+			nau8825->mclk_freq = 0;
 		}
 
-		if (nau8825->mclk_freq != freq) {
-			nau8825->mclk_freq = freq;
+		break;
+	case NAU8825_CLK_FLL_MCLK:
+		/* Acquire the semaphone to synchronize the playback and
+		 * interrupt handler. In order to avoid the playback inter-
+		 * fered by cross talk process, the driver make the playback
+		 * preparation halted until cross talk process finish.
+		 */
+		nau8825_sema_acquire(nau8825, 2 * HZ);
+		regmap_update_bits(regmap, NAU8825_REG_FLL3,
+			NAU8825_FLL_CLK_SRC_MASK, NAU8825_FLL_CLK_SRC_MCLK);
+		/* Release the semaphone. */
+		nau8825_sema_release(nau8825);
 
-			freq = clk_round_rate(nau8825->mclk, freq);
-			ret = clk_set_rate(nau8825->mclk, freq);
-			if (ret) {
-				dev_err(nau8825->dev, "Unable to set mclk rate\n");
-				return ret;
-			}
+		ret = nau8825_mclk_prepare(nau8825, freq);
+		if (ret)
+			return ret;
+
+		break;
+	case NAU8825_CLK_FLL_BLK:
+		/* Acquire the semaphone to synchronize the playback and
+		 * interrupt handler. In order to avoid the playback inter-
+		 * fered by cross talk process, the driver make the playback
+		 * preparation halted until cross talk process finish.
+		 */
+		nau8825_sema_acquire(nau8825, 2 * HZ);
+		regmap_update_bits(regmap, NAU8825_REG_FLL3,
+			NAU8825_FLL_CLK_SRC_MASK, NAU8825_FLL_CLK_SRC_BLK);
+		/* Release the semaphone. */
+		nau8825_sema_release(nau8825);
+
+		if (nau8825->mclk_freq) {
+			clk_disable_unprepare(nau8825->mclk);
+			nau8825->mclk_freq = 0;
 		}
 
 		break;
-	case NAU8825_CLK_INTERNAL:
-		regmap_update_bits(regmap, NAU8825_REG_FLL6, NAU8825_DCO_EN,
-			NAU8825_DCO_EN);
-		regmap_update_bits(regmap, NAU8825_REG_CLK_DIVIDER,
-			NAU8825_CLK_SRC_MASK, NAU8825_CLK_SRC_VCO);
+	case NAU8825_CLK_FLL_FS:
+		/* Acquire the semaphone to synchronize the playback and
+		 * interrupt handler. In order to avoid the playback inter-
+		 * fered by cross talk process, the driver make the playback
+		 * preparation halted until cross talk process finish.
+		 */
+		nau8825_sema_acquire(nau8825, 2 * HZ);
+		regmap_update_bits(regmap, NAU8825_REG_FLL3,
+			NAU8825_FLL_CLK_SRC_MASK, NAU8825_FLL_CLK_SRC_FS);
+		/* Release the semaphone. */
+		nau8825_sema_release(nau8825);
 
 		if (nau8825->mclk_freq) {
 			clk_disable_unprepare(nau8825->mclk);
@@ -1135,6 +2153,31 @@ static int nau8825_set_sysclk(struct snd_soc_codec *codec, int clk_id,
 	return nau8825_configure_sysclk(nau8825, clk_id, freq);
 }
 
+static int nau8825_resume_setup(struct nau8825 *nau8825)
+{
+	struct regmap *regmap = nau8825->regmap;
+
+	/* Close clock when jack type detection at manual mode */
+	nau8825_configure_sysclk(nau8825, NAU8825_CLK_DIS, 0);
+
+	/* Clear all interruption status */
+	nau8825_int_status_clear_all(regmap);
+
+	/* Enable both insertion and ejection interruptions, and then
+	 * bypass de-bounce circuit.
+	 */
+	regmap_update_bits(regmap, NAU8825_REG_INTERRUPT_MASK,
+		NAU8825_IRQ_OUTPUT_EN | NAU8825_IRQ_HEADSET_COMPLETE_EN |
+		NAU8825_IRQ_EJECT_EN | NAU8825_IRQ_INSERT_EN,
+		NAU8825_IRQ_OUTPUT_EN | NAU8825_IRQ_HEADSET_COMPLETE_EN);
+	regmap_update_bits(regmap, NAU8825_REG_JACK_DET_CTRL,
+		NAU8825_JACK_DET_DB_BYPASS, NAU8825_JACK_DET_DB_BYPASS);
+	regmap_update_bits(regmap, NAU8825_REG_INTERRUPT_DIS_CTRL,
+		NAU8825_IRQ_INSERT_DIS | NAU8825_IRQ_EJECT_DIS, 0);
+
+	return 0;
+}
+
 static int nau8825_set_bias_level(struct snd_soc_codec *codec,
 				   enum snd_soc_bias_level level)
 {
@@ -1157,10 +2200,22 @@ static int nau8825_set_bias_level(struct snd_soc_codec *codec,
 					return ret;
 				}
 			}
+			/* Setup codec configuration after resume */
+			nau8825_resume_setup(nau8825);
 		}
 		break;
 
 	case SND_SOC_BIAS_OFF:
+		/* Cancel and reset cross talk detection funciton */
+		nau8825_xtalk_cancel(nau8825);
+		/* Turn off all interruptions before system shutdown. Keep the
+		 * interruption quiet before resume setup completes.
+		 */
+		regmap_write(nau8825->regmap,
+			NAU8825_REG_INTERRUPT_DIS_CTRL, 0xffff);
+		/* Disable ADC needed for interruptions at audo mode */
+		regmap_update_bits(nau8825->regmap, NAU8825_REG_ENA_CTRL,
+			NAU8825_ENABLE_ADC, 0);
 		if (nau8825->mclk_freq)
 			clk_disable_unprepare(nau8825->mclk);
 		break;
@@ -1168,57 +2223,46 @@ static int nau8825_set_bias_level(struct snd_soc_codec *codec,
 	return 0;
 }
 
-#ifdef CONFIG_PM
-static int nau8825_suspend(struct snd_soc_codec *codec)
+static int __maybe_unused nau8825_suspend(struct snd_soc_codec *codec)
 {
 	struct nau8825 *nau8825 = snd_soc_codec_get_drvdata(codec);
 
 	disable_irq(nau8825->irq);
+	snd_soc_codec_force_bias_level(codec, SND_SOC_BIAS_OFF);
 	regcache_cache_only(nau8825->regmap, true);
 	regcache_mark_dirty(nau8825->regmap);
 
 	return 0;
 }
 
-static int nau8825_resume(struct snd_soc_codec *codec)
+static int __maybe_unused nau8825_resume(struct snd_soc_codec *codec)
 {
 	struct nau8825 *nau8825 = snd_soc_codec_get_drvdata(codec);
 
-	/* The chip may lose power and reset in S3. regcache_sync restores
-	 * register values including configurations for sysclk, irq, and
-	 * jack/button detection.
-	 */
 	regcache_cache_only(nau8825->regmap, false);
 	regcache_sync(nau8825->regmap);
-
-	/* Check the jack plug status directly. If the headset is unplugged
-	 * during S3 when the chip has no power, there will be no jack
-	 * detection irq even after the nau8825_restart_jack_detection below,
-	 * because the chip just thinks no headset has ever been plugged in.
-	 */
-	if (!nau8825_is_jack_inserted(nau8825->regmap)) {
-		nau8825_eject_jack(nau8825);
-		snd_soc_jack_report(nau8825->jack, 0, SND_JACK_HEADSET);
+	if (nau8825_is_jack_inserted(nau8825->regmap)) {
+		/* If the jack is inserted, we need to check whether the play-
+		 * back is active before suspend. If active, the driver has to
+		 * raise the protection for cross talk function to avoid the
+		 * playback recovers before cross talk process finish. Other-
+		 * wise, the playback will be interfered by cross talk func-
+		 * tion. It is better to apply hardware related parameters
+		 * before starting playback or record.
+		 */
+		if (nau8825_dai_is_active(nau8825)) {
+			nau8825->xtalk_protect = true;
+			nau8825_sema_acquire(nau8825, 0);
+		}
 	}
-
 	enable_irq(nau8825->irq);
 
-	/* Run jack detection to check the type (OMTP or CTIA) of the headset
-	 * if there is one. This handles the case where a different type of
-	 * headset is plugged in during S3. This triggers an IRQ iff a headset
-	 * is already plugged in.
-	 */
-	nau8825_restart_jack_detection(nau8825->regmap);
-
 	return 0;
 }
-#else
-#define nau8825_suspend NULL
-#define nau8825_resume NULL
-#endif
 
 static struct snd_soc_codec_driver nau8825_codec_driver = {
 	.probe = nau8825_codec_probe,
+	.remove = nau8825_codec_remove,
 	.set_sysclk = nau8825_set_sysclk,
 	.set_pll = nau8825_set_pll,
 	.set_bias_level = nau8825_set_bias_level,
@@ -1318,22 +2362,8 @@ static int nau8825_read_device_properties(struct device *dev,
 
 static int nau8825_setup_irq(struct nau8825 *nau8825)
 {
-	struct regmap *regmap = nau8825->regmap;
 	int ret;
 
-	/* IRQ Output Enable */
-	regmap_update_bits(regmap, NAU8825_REG_INTERRUPT_MASK,
-		NAU8825_IRQ_OUTPUT_EN, NAU8825_IRQ_OUTPUT_EN);
-
-	/* Enable internal VCO needed for interruptions */
-	nau8825_configure_sysclk(nau8825, NAU8825_CLK_INTERNAL, 0);
-
-	/* Enable DDACR needed for interrupts
-	 * It is the same as force_enable_pin("DDACR") we do later
-	 */
-	regmap_update_bits(regmap, NAU8825_REG_ENA_CTRL,
-		NAU8825_ENABLE_DACR, NAU8825_ENABLE_DACR);
-
 	ret = devm_request_threaded_irq(nau8825->dev, nau8825->irq, NULL,
 		nau8825_interrupt, IRQF_TRIGGER_LOW | IRQF_ONESHOT,
 		"nau8825", nau8825);
@@ -1370,6 +2400,13 @@ static int nau8825_i2c_probe(struct i2c_client *i2c,
 		return PTR_ERR(nau8825->regmap);
 	nau8825->dev = dev;
 	nau8825->irq = i2c->irq;
+	/* Initiate parameters, semaphone and work queue which are needed in
+	 * cross talk suppression measurment function.
+	 */
+	nau8825->xtalk_state = NAU8825_XTALK_DONE;
+	nau8825->xtalk_protect = false;
+	sema_init(&nau8825->xtalk_sem, 1);
+	INIT_WORK(&nau8825->xtalk_work, nau8825_xtalk_work);
 
 	nau8825_print_device_properties(nau8825);
 
@@ -1405,6 +2442,7 @@ static const struct i2c_device_id nau8825_i2c_ids[] = {
 	{ "nau8825", 0 },
 	{ }
 };
+MODULE_DEVICE_TABLE(i2c, nau8825_i2c_ids);
 
 #ifdef CONFIG_OF
 static const struct of_device_id nau8825_of_ids[] = {