/*
   * ALSA SoC TWL4030 codec driver
   *
   * Author:      Steve Sakoman, <steve@sakoman.com>
   *
   * This program is free software; you can redistribute it and/or
   * modify it under the terms of the GNU General Public License
   * version 2 as published by the Free Software Foundation.
   *
   * This program is distributed in the hope that it will be useful, but
   * WITHOUT ANY WARRANTY; without even the implied warranty of
   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   * General Public License for more details.
   *
   * You should have received a copy of the GNU General Public License
   * along with this program; if not, write to the Free Software
   * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
   * 02110-1301 USA
   *
   */
  
  #include <linux/module.h>
  #include <linux/moduleparam.h>
  #include <linux/init.h>
  #include <linux/delay.h>
  #include <linux/pm.h>
  #include <linux/i2c.h>
  #include <linux/platform_device.h>
  #include <linux/of.h>
  #include <linux/of_gpio.h>
  #include <linux/i2c/twl.h>
  #include <linux/slab.h>
  #include <linux/gpio.h>
  #include <sound/core.h>
  #include <sound/pcm.h>
  #include <sound/pcm_params.h>
  #include <sound/soc.h>
  #include <sound/initval.h>
  #include <sound/tlv.h>
  
  /* Register descriptions are here */
  #include <linux/mfd/twl4030-audio.h>
  
  /* TWL4030 PMBR1 Register */
  #define TWL4030_PMBR1_REG		0x0D
  /* TWL4030 PMBR1 Register GPIO6 mux bits */
  #define TWL4030_GPIO6_PWM0_MUTE(value)	((value & 0x03) << 2)
  
  #define TWL4030_CACHEREGNUM	(TWL4030_REG_MISC_SET_2 + 1)
  
  /* codec private data */
  struct twl4030_priv {
  	unsigned int codec_powered;
  
  	/* reference counts of AIF/APLL users */
  	unsigned int apll_enabled;
  
  	struct snd_pcm_substream *master_substream;
  	struct snd_pcm_substream *slave_substream;
  
  	unsigned int configured;
  	unsigned int rate;
  	unsigned int sample_bits;
  	unsigned int channels;
  
  	unsigned int sysclk;
  
  	/* Output (with associated amp) states */
  	u8 hsl_enabled, hsr_enabled;
  	u8 earpiece_enabled;
  	u8 predrivel_enabled, predriver_enabled;
  	u8 carkitl_enabled, carkitr_enabled;
  	u8 ctl_cache[TWL4030_REG_PRECKR_CTL - TWL4030_REG_EAR_CTL + 1];
  
  	struct twl4030_codec_data *pdata;
  };
  
  static void tw4030_init_ctl_cache(struct twl4030_priv *twl4030)
  {
  	int i;
  	u8 byte;
  
  	for (i = TWL4030_REG_EAR_CTL; i <= TWL4030_REG_PRECKR_CTL; i++) {
  		twl_i2c_read_u8(TWL4030_MODULE_AUDIO_VOICE, &byte, i);
  		twl4030->ctl_cache[i - TWL4030_REG_EAR_CTL] = byte;
  	}
  }
  
  static unsigned int twl4030_read(struct snd_soc_codec *codec, unsigned int reg)
  {
  	struct twl4030_priv *twl4030 = snd_soc_codec_get_drvdata(codec);
  	u8 value = 0;
  
  	if (reg >= TWL4030_CACHEREGNUM)
  		return -EIO;
  
  	switch (reg) {
  	case TWL4030_REG_EAR_CTL:
  	case TWL4030_REG_PREDL_CTL:
  	case TWL4030_REG_PREDR_CTL:
  	case TWL4030_REG_PRECKL_CTL:
  	case TWL4030_REG_PRECKR_CTL:
  	case TWL4030_REG_HS_GAIN_SET:
  		value = twl4030->ctl_cache[reg - TWL4030_REG_EAR_CTL];
  		break;
  	default:
  		twl_i2c_read_u8(TWL4030_MODULE_AUDIO_VOICE, &value, reg);
  		break;
  	}
  
  	return value;
  }
  
  static bool twl4030_can_write_to_chip(struct twl4030_priv *twl4030,
  				      unsigned int reg)
  {
  	bool write_to_reg = false;
  
  	/* Decide if the given register can be written */
  	switch (reg) {
  	case TWL4030_REG_EAR_CTL:
  		if (twl4030->earpiece_enabled)
  			write_to_reg = true;
  		break;
  	case TWL4030_REG_PREDL_CTL:
  		if (twl4030->predrivel_enabled)
  			write_to_reg = true;
  		break;
  	case TWL4030_REG_PREDR_CTL:
  		if (twl4030->predriver_enabled)
  			write_to_reg = true;
  		break;
  	case TWL4030_REG_PRECKL_CTL:
  		if (twl4030->carkitl_enabled)
  			write_to_reg = true;
  		break;
  	case TWL4030_REG_PRECKR_CTL:
  		if (twl4030->carkitr_enabled)
  			write_to_reg = true;
  		break;
  	case TWL4030_REG_HS_GAIN_SET:
  		if (twl4030->hsl_enabled || twl4030->hsr_enabled)
  			write_to_reg = true;
  		break;
  	default:
  		/* All other register can be written */
  		write_to_reg = true;
  		break;
  	}
  
  	return write_to_reg;
  }
  
  static int twl4030_write(struct snd_soc_codec *codec, unsigned int reg,
  			 unsigned int value)
  {
  	struct twl4030_priv *twl4030 = snd_soc_codec_get_drvdata(codec);
  
  	/* Update the ctl cache */
  	switch (reg) {
  	case TWL4030_REG_EAR_CTL:
  	case TWL4030_REG_PREDL_CTL:
  	case TWL4030_REG_PREDR_CTL:
  	case TWL4030_REG_PRECKL_CTL:
  	case TWL4030_REG_PRECKR_CTL:
  	case TWL4030_REG_HS_GAIN_SET:
  		twl4030->ctl_cache[reg - TWL4030_REG_EAR_CTL] = value;
  		break;
  	default:
  		break;
  	}
  
  	if (twl4030_can_write_to_chip(twl4030, reg))
  		return twl_i2c_write_u8(TWL4030_MODULE_AUDIO_VOICE, value, reg);
  
  	return 0;
  }
  
  static inline void twl4030_wait_ms(int time)
  {
  	if (time < 60) {
  		time *= 1000;
  		usleep_range(time, time + 500);
  	} else {
  		msleep(time);
  	}
  }
  
  static void twl4030_codec_enable(struct snd_soc_codec *codec, int enable)
  {
  	struct twl4030_priv *twl4030 = snd_soc_codec_get_drvdata(codec);
  	int mode;
  
  	if (enable == twl4030->codec_powered)
  		return;
  
  	if (enable)
  		mode = twl4030_audio_enable_resource(TWL4030_AUDIO_RES_POWER);
  	else
  		mode = twl4030_audio_disable_resource(TWL4030_AUDIO_RES_POWER);
  
  	if (mode >= 0)
  		twl4030->codec_powered = enable;
  
  	/* REVISIT: this delay is present in TI sample drivers */
  	/* but there seems to be no TRM requirement for it     */
  	udelay(10);
  }
  
  static void twl4030_setup_pdata_of(struct twl4030_codec_data *pdata,
  				   struct device_node *node)
  {
  	int value;
  
  	of_property_read_u32(node, "ti,digimic_delay",
  			     &pdata->digimic_delay);
  	of_property_read_u32(node, "ti,ramp_delay_value",
  			     &pdata->ramp_delay_value);
  	of_property_read_u32(node, "ti,offset_cncl_path",
  			     &pdata->offset_cncl_path);
  	if (!of_property_read_u32(node, "ti,hs_extmute", &value))
  		pdata->hs_extmute = value;
  
  	pdata->hs_extmute_gpio = of_get_named_gpio(node,
  						   "ti,hs_extmute_gpio", 0);
  	if (gpio_is_valid(pdata->hs_extmute_gpio))
  		pdata->hs_extmute = 1;
  }
  
  static struct twl4030_codec_data *twl4030_get_pdata(struct snd_soc_codec *codec)
  {
  	struct twl4030_codec_data *pdata = dev_get_platdata(codec->dev);
  	struct device_node *twl4030_codec_node = NULL;
  
  	twl4030_codec_node = of_find_node_by_name(codec->dev->parent->of_node,
  						  "codec");
  
  	if (!pdata && twl4030_codec_node) {
  		pdata = devm_kzalloc(codec->dev,
  				     sizeof(struct twl4030_codec_data),
  				     GFP_KERNEL);
  		if (!pdata) {
  			dev_err(codec->dev, "Can not allocate memory
  ");
  			return NULL;
  		}
  		twl4030_setup_pdata_of(pdata, twl4030_codec_node);
  	}
  
  	return pdata;
  }
  
  static void twl4030_init_chip(struct snd_soc_codec *codec)
  {
  	struct twl4030_codec_data *pdata;
  	struct twl4030_priv *twl4030 = snd_soc_codec_get_drvdata(codec);
  	u8 reg, byte;
  	int i = 0;
  
  	pdata = twl4030_get_pdata(codec);
  
  	if (pdata && pdata->hs_extmute) {
  		if (gpio_is_valid(pdata->hs_extmute_gpio)) {
  			int ret;
  
  			if (!pdata->hs_extmute_gpio)
  				dev_warn(codec->dev,
  					"Extmute GPIO is 0 is this correct?
  ");
  
  			ret = gpio_request_one(pdata->hs_extmute_gpio,
  					       GPIOF_OUT_INIT_LOW,
  					       "hs_extmute");
  			if (ret) {
  				dev_err(codec->dev,
  					"Failed to get hs_extmute GPIO
  ");
  				pdata->hs_extmute_gpio = -1;
  			}
  		} else {
  			u8 pin_mux;
  
  			/* Set TWL4030 GPIO6 as EXTMUTE signal */
  			twl_i2c_read_u8(TWL4030_MODULE_INTBR, &pin_mux,
  					TWL4030_PMBR1_REG);
  			pin_mux &= ~TWL4030_GPIO6_PWM0_MUTE(0x03);
  			pin_mux |= TWL4030_GPIO6_PWM0_MUTE(0x02);
  			twl_i2c_write_u8(TWL4030_MODULE_INTBR, pin_mux,
  					 TWL4030_PMBR1_REG);
  		}
  	}
  
  	/* Initialize the local ctl register cache */
  	tw4030_init_ctl_cache(twl4030);
  
  	/* anti-pop when changing analog gain */
  	reg = twl4030_read(codec, TWL4030_REG_MISC_SET_1);
  	twl4030_write(codec, TWL4030_REG_MISC_SET_1,
  		      reg | TWL4030_SMOOTH_ANAVOL_EN);
  
  	twl4030_write(codec, TWL4030_REG_OPTION,
  		      TWL4030_ATXL1_EN | TWL4030_ATXR1_EN |
  		      TWL4030_ARXL2_EN | TWL4030_ARXR2_EN);
  
  	/* REG_ARXR2_APGA_CTL reset according to the TRM: 0dB, DA_EN */
  	twl4030_write(codec, TWL4030_REG_ARXR2_APGA_CTL, 0x32);
  
  	/* Machine dependent setup */
  	if (!pdata)
  		return;
  
  	twl4030->pdata = pdata;
  
  	reg = twl4030_read(codec, TWL4030_REG_HS_POPN_SET);
  	reg &= ~TWL4030_RAMP_DELAY;
  	reg |= (pdata->ramp_delay_value << 2);
  	twl4030_write(codec, TWL4030_REG_HS_POPN_SET, reg);
  
  	/* initiate offset cancellation */
  	twl4030_codec_enable(codec, 1);
  
  	reg = twl4030_read(codec, TWL4030_REG_ANAMICL);
  	reg &= ~TWL4030_OFFSET_CNCL_SEL;
  	reg |= pdata->offset_cncl_path;
  	twl4030_write(codec, TWL4030_REG_ANAMICL,
  		      reg | TWL4030_CNCL_OFFSET_START);
  
  	/*
  	 * Wait for offset cancellation to complete.
  	 * Since this takes a while, do not slam the i2c.
  	 * Start polling the status after ~20ms.
  	 */
  	msleep(20);
  	do {
  		usleep_range(1000, 2000);
  		twl_set_regcache_bypass(TWL4030_MODULE_AUDIO_VOICE, true);
  		twl_i2c_read_u8(TWL4030_MODULE_AUDIO_VOICE, &byte,
  				TWL4030_REG_ANAMICL);
  		twl_set_regcache_bypass(TWL4030_MODULE_AUDIO_VOICE, false);
  	} while ((i++ < 100) &&
  		 ((byte & TWL4030_CNCL_OFFSET_START) ==
  		  TWL4030_CNCL_OFFSET_START));
  
  	twl4030_codec_enable(codec, 0);
  }
  
  static void twl4030_apll_enable(struct snd_soc_codec *codec, int enable)
  {
  	struct twl4030_priv *twl4030 = snd_soc_codec_get_drvdata(codec);
  	int status = -1;
  
  	if (enable) {
  		twl4030->apll_enabled++;
  		if (twl4030->apll_enabled == 1)
  			status = twl4030_audio_enable_resource(
  							TWL4030_AUDIO_RES_APLL);
  	} else {
  		twl4030->apll_enabled--;
  		if (!twl4030->apll_enabled)
  			status = twl4030_audio_disable_resource(
  							TWL4030_AUDIO_RES_APLL);
  	}
  }
  
  /* Earpiece */
  static const struct snd_kcontrol_new twl4030_dapm_earpiece_controls[] = {
  	SOC_DAPM_SINGLE("Voice", TWL4030_REG_EAR_CTL, 0, 1, 0),
  	SOC_DAPM_SINGLE("AudioL1", TWL4030_REG_EAR_CTL, 1, 1, 0),
  	SOC_DAPM_SINGLE("AudioL2", TWL4030_REG_EAR_CTL, 2, 1, 0),
  	SOC_DAPM_SINGLE("AudioR1", TWL4030_REG_EAR_CTL, 3, 1, 0),
  };
  
  /* PreDrive Left */
  static const struct snd_kcontrol_new twl4030_dapm_predrivel_controls[] = {
  	SOC_DAPM_SINGLE("Voice", TWL4030_REG_PREDL_CTL, 0, 1, 0),
  	SOC_DAPM_SINGLE("AudioL1", TWL4030_REG_PREDL_CTL, 1, 1, 0),
  	SOC_DAPM_SINGLE("AudioL2", TWL4030_REG_PREDL_CTL, 2, 1, 0),
  	SOC_DAPM_SINGLE("AudioR2", TWL4030_REG_PREDL_CTL, 3, 1, 0),
  };
  
  /* PreDrive Right */
  static const struct snd_kcontrol_new twl4030_dapm_predriver_controls[] = {
  	SOC_DAPM_SINGLE("Voice", TWL4030_REG_PREDR_CTL, 0, 1, 0),
  	SOC_DAPM_SINGLE("AudioR1", TWL4030_REG_PREDR_CTL, 1, 1, 0),
  	SOC_DAPM_SINGLE("AudioR2", TWL4030_REG_PREDR_CTL, 2, 1, 0),
  	SOC_DAPM_SINGLE("AudioL2", TWL4030_REG_PREDR_CTL, 3, 1, 0),
  };
  
  /* Headset Left */
  static const struct snd_kcontrol_new twl4030_dapm_hsol_controls[] = {
  	SOC_DAPM_SINGLE("Voice", TWL4030_REG_HS_SEL, 0, 1, 0),
  	SOC_DAPM_SINGLE("AudioL1", TWL4030_REG_HS_SEL, 1, 1, 0),
  	SOC_DAPM_SINGLE("AudioL2", TWL4030_REG_HS_SEL, 2, 1, 0),
  };
  
  /* Headset Right */
  static const struct snd_kcontrol_new twl4030_dapm_hsor_controls[] = {
  	SOC_DAPM_SINGLE("Voice", TWL4030_REG_HS_SEL, 3, 1, 0),
  	SOC_DAPM_SINGLE("AudioR1", TWL4030_REG_HS_SEL, 4, 1, 0),
  	SOC_DAPM_SINGLE("AudioR2", TWL4030_REG_HS_SEL, 5, 1, 0),
  };
  
  /* Carkit Left */
  static const struct snd_kcontrol_new twl4030_dapm_carkitl_controls[] = {
  	SOC_DAPM_SINGLE("Voice", TWL4030_REG_PRECKL_CTL, 0, 1, 0),
  	SOC_DAPM_SINGLE("AudioL1", TWL4030_REG_PRECKL_CTL, 1, 1, 0),
  	SOC_DAPM_SINGLE("AudioL2", TWL4030_REG_PRECKL_CTL, 2, 1, 0),
  };
  
  /* Carkit Right */
  static const struct snd_kcontrol_new twl4030_dapm_carkitr_controls[] = {
  	SOC_DAPM_SINGLE("Voice", TWL4030_REG_PRECKR_CTL, 0, 1, 0),
  	SOC_DAPM_SINGLE("AudioR1", TWL4030_REG_PRECKR_CTL, 1, 1, 0),
  	SOC_DAPM_SINGLE("AudioR2", TWL4030_REG_PRECKR_CTL, 2, 1, 0),
  };
  
  /* Handsfree Left */
  static const char *twl4030_handsfreel_texts[] =
  		{"Voice", "AudioL1", "AudioL2", "AudioR2"};
  
  static const struct soc_enum twl4030_handsfreel_enum =
  	SOC_ENUM_SINGLE(TWL4030_REG_HFL_CTL, 0,
  			ARRAY_SIZE(twl4030_handsfreel_texts),
  			twl4030_handsfreel_texts);
  
  static const struct snd_kcontrol_new twl4030_dapm_handsfreel_control =
  SOC_DAPM_ENUM("Route", twl4030_handsfreel_enum);
  
  /* Handsfree Left virtual mute */
  static const struct snd_kcontrol_new twl4030_dapm_handsfreelmute_control =
  	SOC_DAPM_SINGLE_VIRT("Switch", 1);
  
  /* Handsfree Right */
  static const char *twl4030_handsfreer_texts[] =
  		{"Voice", "AudioR1", "AudioR2", "AudioL2"};
  
  static const struct soc_enum twl4030_handsfreer_enum =
  	SOC_ENUM_SINGLE(TWL4030_REG_HFR_CTL, 0,
  			ARRAY_SIZE(twl4030_handsfreer_texts),
  			twl4030_handsfreer_texts);
  
  static const struct snd_kcontrol_new twl4030_dapm_handsfreer_control =
  SOC_DAPM_ENUM("Route", twl4030_handsfreer_enum);
  
  /* Handsfree Right virtual mute */
  static const struct snd_kcontrol_new twl4030_dapm_handsfreermute_control =
  	SOC_DAPM_SINGLE_VIRT("Switch", 1);
  
  /* Vibra */
  /* Vibra audio path selection */
  static const char *twl4030_vibra_texts[] =
  		{"AudioL1", "AudioR1", "AudioL2", "AudioR2"};
  
  static const struct soc_enum twl4030_vibra_enum =
  	SOC_ENUM_SINGLE(TWL4030_REG_VIBRA_CTL, 2,
  			ARRAY_SIZE(twl4030_vibra_texts),
  			twl4030_vibra_texts);
  
  static const struct snd_kcontrol_new twl4030_dapm_vibra_control =
  SOC_DAPM_ENUM("Route", twl4030_vibra_enum);
  
  /* Vibra path selection: local vibrator (PWM) or audio driven */
  static const char *twl4030_vibrapath_texts[] =
  		{"Local vibrator", "Audio"};
  
  static const struct soc_enum twl4030_vibrapath_enum =
  	SOC_ENUM_SINGLE(TWL4030_REG_VIBRA_CTL, 4,
  			ARRAY_SIZE(twl4030_vibrapath_texts),
  			twl4030_vibrapath_texts);
  
  static const struct snd_kcontrol_new twl4030_dapm_vibrapath_control =
  SOC_DAPM_ENUM("Route", twl4030_vibrapath_enum);
  
  /* Left analog microphone selection */
  static const struct snd_kcontrol_new twl4030_dapm_analoglmic_controls[] = {
  	SOC_DAPM_SINGLE("Main Mic Capture Switch",
  			TWL4030_REG_ANAMICL, 0, 1, 0),
  	SOC_DAPM_SINGLE("Headset Mic Capture Switch",
  			TWL4030_REG_ANAMICL, 1, 1, 0),
  	SOC_DAPM_SINGLE("AUXL Capture Switch",
  			TWL4030_REG_ANAMICL, 2, 1, 0),
  	SOC_DAPM_SINGLE("Carkit Mic Capture Switch",
  			TWL4030_REG_ANAMICL, 3, 1, 0),
  };
  
  /* Right analog microphone selection */
  static const struct snd_kcontrol_new twl4030_dapm_analogrmic_controls[] = {
  	SOC_DAPM_SINGLE("Sub Mic Capture Switch", TWL4030_REG_ANAMICR, 0, 1, 0),
  	SOC_DAPM_SINGLE("AUXR Capture Switch", TWL4030_REG_ANAMICR, 2, 1, 0),
  };
  
  /* TX1 L/R Analog/Digital microphone selection */
  static const char *twl4030_micpathtx1_texts[] =
  		{"Analog", "Digimic0"};
  
  static const struct soc_enum twl4030_micpathtx1_enum =
  	SOC_ENUM_SINGLE(TWL4030_REG_ADCMICSEL, 0,
  			ARRAY_SIZE(twl4030_micpathtx1_texts),
  			twl4030_micpathtx1_texts);
  
  static const struct snd_kcontrol_new twl4030_dapm_micpathtx1_control =
  SOC_DAPM_ENUM("Route", twl4030_micpathtx1_enum);
  
  /* TX2 L/R Analog/Digital microphone selection */
  static const char *twl4030_micpathtx2_texts[] =
  		{"Analog", "Digimic1"};
  
  static const struct soc_enum twl4030_micpathtx2_enum =
  	SOC_ENUM_SINGLE(TWL4030_REG_ADCMICSEL, 2,
  			ARRAY_SIZE(twl4030_micpathtx2_texts),
  			twl4030_micpathtx2_texts);
  
  static const struct snd_kcontrol_new twl4030_dapm_micpathtx2_control =
  SOC_DAPM_ENUM("Route", twl4030_micpathtx2_enum);
  
  /* Analog bypass for AudioR1 */
  static const struct snd_kcontrol_new twl4030_dapm_abypassr1_control =
  	SOC_DAPM_SINGLE("Switch", TWL4030_REG_ARXR1_APGA_CTL, 2, 1, 0);
  
  /* Analog bypass for AudioL1 */
  static const struct snd_kcontrol_new twl4030_dapm_abypassl1_control =
  	SOC_DAPM_SINGLE("Switch", TWL4030_REG_ARXL1_APGA_CTL, 2, 1, 0);
  
  /* Analog bypass for AudioR2 */
  static const struct snd_kcontrol_new twl4030_dapm_abypassr2_control =
  	SOC_DAPM_SINGLE("Switch", TWL4030_REG_ARXR2_APGA_CTL, 2, 1, 0);
  
  /* Analog bypass for AudioL2 */
  static const struct snd_kcontrol_new twl4030_dapm_abypassl2_control =
  	SOC_DAPM_SINGLE("Switch", TWL4030_REG_ARXL2_APGA_CTL, 2, 1, 0);
  
  /* Analog bypass for Voice */
  static const struct snd_kcontrol_new twl4030_dapm_abypassv_control =
  	SOC_DAPM_SINGLE("Switch", TWL4030_REG_VDL_APGA_CTL, 2, 1, 0);
  
  /* Digital bypass gain, mute instead of -30dB */
  static const unsigned int twl4030_dapm_dbypass_tlv[] = {
  	TLV_DB_RANGE_HEAD(3),
  	0, 1, TLV_DB_SCALE_ITEM(-3000, 600, 1),
  	2, 3, TLV_DB_SCALE_ITEM(-2400, 0, 0),
  	4, 7, TLV_DB_SCALE_ITEM(-1800, 600, 0),
  };
  
  /* Digital bypass left (TX1L -> RX2L) */
  static const struct snd_kcontrol_new twl4030_dapm_dbypassl_control =
  	SOC_DAPM_SINGLE_TLV("Volume",
  			TWL4030_REG_ATX2ARXPGA, 3, 7, 0,
  			twl4030_dapm_dbypass_tlv);
  
  /* Digital bypass right (TX1R -> RX2R) */
  static const struct snd_kcontrol_new twl4030_dapm_dbypassr_control =
  	SOC_DAPM_SINGLE_TLV("Volume",
  			TWL4030_REG_ATX2ARXPGA, 0, 7, 0,
  			twl4030_dapm_dbypass_tlv);
  
  /*
   * Voice Sidetone GAIN volume control:
   * from -51 to -10 dB in 1 dB steps (mute instead of -51 dB)
   */
  static DECLARE_TLV_DB_SCALE(twl4030_dapm_dbypassv_tlv, -5100, 100, 1);
  
  /* Digital bypass voice: sidetone (VUL -> VDL)*/
  static const struct snd_kcontrol_new twl4030_dapm_dbypassv_control =
  	SOC_DAPM_SINGLE_TLV("Volume",
  			TWL4030_REG_VSTPGA, 0, 0x29, 0,
  			twl4030_dapm_dbypassv_tlv);
  
  /*
   * Output PGA builder:
   * Handle the muting and unmuting of the given output (turning off the
   * amplifier associated with the output pin)
   * On mute bypass the reg_cache and write 0 to the register
   * On unmute: restore the register content from the reg_cache
   * Outputs handled in this way:  Earpiece, PreDrivL/R, CarkitL/R
   */
  #define TWL4030_OUTPUT_PGA(pin_name, reg, mask)				\
  static int pin_name##pga_event(struct snd_soc_dapm_widget *w,		\
  			       struct snd_kcontrol *kcontrol, int event) \
  {									\
  	struct twl4030_priv *twl4030 = snd_soc_codec_get_drvdata(w->codec); \
  									\
  	switch (event) {						\
  	case SND_SOC_DAPM_POST_PMU:					\
  		twl4030->pin_name##_enabled = 1;			\
  		twl4030_write(w->codec, reg, twl4030_read(w->codec, reg)); \
  		break;							\
  	case SND_SOC_DAPM_POST_PMD:					\
  		twl4030->pin_name##_enabled = 0;			\
  		twl_i2c_write_u8(TWL4030_MODULE_AUDIO_VOICE, 0, reg);	\
  		break;							\
  	}								\
  	return 0;							\
  }
  
  TWL4030_OUTPUT_PGA(earpiece, TWL4030_REG_EAR_CTL, TWL4030_EAR_GAIN);
  TWL4030_OUTPUT_PGA(predrivel, TWL4030_REG_PREDL_CTL, TWL4030_PREDL_GAIN);
  TWL4030_OUTPUT_PGA(predriver, TWL4030_REG_PREDR_CTL, TWL4030_PREDR_GAIN);
  TWL4030_OUTPUT_PGA(carkitl, TWL4030_REG_PRECKL_CTL, TWL4030_PRECKL_GAIN);
  TWL4030_OUTPUT_PGA(carkitr, TWL4030_REG_PRECKR_CTL, TWL4030_PRECKR_GAIN);
  
  static void handsfree_ramp(struct snd_soc_codec *codec, int reg, int ramp)
  {
  	unsigned char hs_ctl;
  
  	hs_ctl = twl4030_read(codec, reg);
  
  	if (ramp) {
  		/* HF ramp-up */
  		hs_ctl |= TWL4030_HF_CTL_REF_EN;
  		twl4030_write(codec, reg, hs_ctl);
  		udelay(10);
  		hs_ctl |= TWL4030_HF_CTL_RAMP_EN;
  		twl4030_write(codec, reg, hs_ctl);
  		udelay(40);
  		hs_ctl |= TWL4030_HF_CTL_LOOP_EN;
  		hs_ctl |= TWL4030_HF_CTL_HB_EN;
  		twl4030_write(codec, reg, hs_ctl);
  	} else {
  		/* HF ramp-down */
  		hs_ctl &= ~TWL4030_HF_CTL_LOOP_EN;
  		hs_ctl &= ~TWL4030_HF_CTL_HB_EN;
  		twl4030_write(codec, reg, hs_ctl);
  		hs_ctl &= ~TWL4030_HF_CTL_RAMP_EN;
  		twl4030_write(codec, reg, hs_ctl);
  		udelay(40);
  		hs_ctl &= ~TWL4030_HF_CTL_REF_EN;
  		twl4030_write(codec, reg, hs_ctl);
  	}
  }
  
  static int handsfreelpga_event(struct snd_soc_dapm_widget *w,
  			       struct snd_kcontrol *kcontrol, int event)
  {
  	switch (event) {
  	case SND_SOC_DAPM_POST_PMU:
  		handsfree_ramp(w->codec, TWL4030_REG_HFL_CTL, 1);
  		break;
  	case SND_SOC_DAPM_POST_PMD:
  		handsfree_ramp(w->codec, TWL4030_REG_HFL_CTL, 0);
  		break;
  	}
  	return 0;
  }
  
  static int handsfreerpga_event(struct snd_soc_dapm_widget *w,
  			       struct snd_kcontrol *kcontrol, int event)
  {
  	switch (event) {
  	case SND_SOC_DAPM_POST_PMU:
  		handsfree_ramp(w->codec, TWL4030_REG_HFR_CTL, 1);
  		break;
  	case SND_SOC_DAPM_POST_PMD:
  		handsfree_ramp(w->codec, TWL4030_REG_HFR_CTL, 0);
  		break;
  	}
  	return 0;
  }
  
  static int vibramux_event(struct snd_soc_dapm_widget *w,
  			  struct snd_kcontrol *kcontrol, int event)
  {
  	twl4030_write(w->codec, TWL4030_REG_VIBRA_SET, 0xff);
  	return 0;
  }
  
  static int apll_event(struct snd_soc_dapm_widget *w,
  		      struct snd_kcontrol *kcontrol, int event)
  {
  	switch (event) {
  	case SND_SOC_DAPM_PRE_PMU:
  		twl4030_apll_enable(w->codec, 1);
  		break;
  	case SND_SOC_DAPM_POST_PMD:
  		twl4030_apll_enable(w->codec, 0);
  		break;
  	}
  	return 0;
  }
  
  static int aif_event(struct snd_soc_dapm_widget *w,
  		     struct snd_kcontrol *kcontrol, int event)
  {
  	u8 audio_if;
  
  	audio_if = twl4030_read(w->codec, TWL4030_REG_AUDIO_IF);
  	switch (event) {
  	case SND_SOC_DAPM_PRE_PMU:
  		/* Enable AIF */
  		/* enable the PLL before we use it to clock the DAI */
  		twl4030_apll_enable(w->codec, 1);
  
  		twl4030_write(w->codec, TWL4030_REG_AUDIO_IF,
  			      audio_if | TWL4030_AIF_EN);
  		break;
  	case SND_SOC_DAPM_POST_PMD:
  		/* disable the DAI before we stop it's source PLL */
  		twl4030_write(w->codec, TWL4030_REG_AUDIO_IF,
  			      audio_if &  ~TWL4030_AIF_EN);
  		twl4030_apll_enable(w->codec, 0);
  		break;
  	}
  	return 0;
  }
  
  static void headset_ramp(struct snd_soc_codec *codec, int ramp)
  {
  	unsigned char hs_gain, hs_pop;
  	struct twl4030_priv *twl4030 = snd_soc_codec_get_drvdata(codec);
  	struct twl4030_codec_data *pdata = twl4030->pdata;
  	/* Base values for ramp delay calculation: 2^19 - 2^26 */
  	unsigned int ramp_base[] = {524288, 1048576, 2097152, 4194304,
  				    8388608, 16777216, 33554432, 67108864};
  	unsigned int delay;
  
  	hs_gain = twl4030_read(codec, TWL4030_REG_HS_GAIN_SET);
  	hs_pop = twl4030_read(codec, TWL4030_REG_HS_POPN_SET);
  	delay = (ramp_base[(hs_pop & TWL4030_RAMP_DELAY) >> 2] /
  		twl4030->sysclk) + 1;
  
  	/* Enable external mute control, this dramatically reduces
  	 * the pop-noise */
  	if (pdata && pdata->hs_extmute) {
  		if (gpio_is_valid(pdata->hs_extmute_gpio)) {
  			gpio_set_value(pdata->hs_extmute_gpio, 1);
  		} else {
  			hs_pop |= TWL4030_EXTMUTE;
  			twl4030_write(codec, TWL4030_REG_HS_POPN_SET, hs_pop);
  		}
  	}
  
  	if (ramp) {
  		/* Headset ramp-up according to the TRM */
  		hs_pop |= TWL4030_VMID_EN;
  		twl4030_write(codec, TWL4030_REG_HS_POPN_SET, hs_pop);
  		/* Actually write to the register */
  		twl_i2c_write_u8(TWL4030_MODULE_AUDIO_VOICE, hs_gain,
  				 TWL4030_REG_HS_GAIN_SET);
  		hs_pop |= TWL4030_RAMP_EN;
  		twl4030_write(codec, TWL4030_REG_HS_POPN_SET, hs_pop);
  		/* Wait ramp delay time + 1, so the VMID can settle */
  		twl4030_wait_ms(delay);
  	} else {
  		/* Headset ramp-down _not_ according to
  		 * the TRM, but in a way that it is working */
  		hs_pop &= ~TWL4030_RAMP_EN;
  		twl4030_write(codec, TWL4030_REG_HS_POPN_SET, hs_pop);
  		/* Wait ramp delay time + 1, so the VMID can settle */
  		twl4030_wait_ms(delay);
  		/* Bypass the reg_cache to mute the headset */
  		twl_i2c_write_u8(TWL4030_MODULE_AUDIO_VOICE, hs_gain & (~0x0f),
  				 TWL4030_REG_HS_GAIN_SET);
  
  		hs_pop &= ~TWL4030_VMID_EN;
  		twl4030_write(codec, TWL4030_REG_HS_POPN_SET, hs_pop);
  	}
  
  	/* Disable external mute */
  	if (pdata && pdata->hs_extmute) {
  		if (gpio_is_valid(pdata->hs_extmute_gpio)) {
  			gpio_set_value(pdata->hs_extmute_gpio, 0);
  		} else {
  			hs_pop &= ~TWL4030_EXTMUTE;
  			twl4030_write(codec, TWL4030_REG_HS_POPN_SET, hs_pop);
  		}
  	}
  }
  
  static int headsetlpga_event(struct snd_soc_dapm_widget *w,
  			     struct snd_kcontrol *kcontrol, int event)
  {
  	struct twl4030_priv *twl4030 = snd_soc_codec_get_drvdata(w->codec);
  
  	switch (event) {
  	case SND_SOC_DAPM_POST_PMU:
  		/* Do the ramp-up only once */
  		if (!twl4030->hsr_enabled)
  			headset_ramp(w->codec, 1);
  
  		twl4030->hsl_enabled = 1;
  		break;
  	case SND_SOC_DAPM_POST_PMD:
  		/* Do the ramp-down only if both headsetL/R is disabled */
  		if (!twl4030->hsr_enabled)
  			headset_ramp(w->codec, 0);
  
  		twl4030->hsl_enabled = 0;
  		break;
  	}
  	return 0;
  }
  
  static int headsetrpga_event(struct snd_soc_dapm_widget *w,
  			     struct snd_kcontrol *kcontrol, int event)
  {
  	struct twl4030_priv *twl4030 = snd_soc_codec_get_drvdata(w->codec);
  
  	switch (event) {
  	case SND_SOC_DAPM_POST_PMU:
  		/* Do the ramp-up only once */
  		if (!twl4030->hsl_enabled)
  			headset_ramp(w->codec, 1);
  
  		twl4030->hsr_enabled = 1;
  		break;
  	case SND_SOC_DAPM_POST_PMD:
  		/* Do the ramp-down only if both headsetL/R is disabled */
  		if (!twl4030->hsl_enabled)
  			headset_ramp(w->codec, 0);
  
  		twl4030->hsr_enabled = 0;
  		break;
  	}
  	return 0;
  }
  
  static int digimic_event(struct snd_soc_dapm_widget *w,
  			 struct snd_kcontrol *kcontrol, int event)
  {
  	struct twl4030_priv *twl4030 = snd_soc_codec_get_drvdata(w->codec);
  	struct twl4030_codec_data *pdata = twl4030->pdata;
  
  	if (pdata && pdata->digimic_delay)
  		twl4030_wait_ms(pdata->digimic_delay);
  	return 0;
  }
  
  /*
   * Some of the gain controls in TWL (mostly those which are associated with
   * the outputs) are implemented in an interesting way:
   * 0x0 : Power down (mute)
   * 0x1 : 6dB
   * 0x2 : 0 dB
   * 0x3 : -6 dB
   * Inverting not going to help with these.
   * Custom volsw and volsw_2r get/put functions to handle these gain bits.
   */
  static int snd_soc_get_volsw_twl4030(struct snd_kcontrol *kcontrol,
  				     struct snd_ctl_elem_value *ucontrol)
  {
  	struct soc_mixer_control *mc =
  		(struct soc_mixer_control *)kcontrol->private_value;
  	struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
  	unsigned int reg = mc->reg;
  	unsigned int shift = mc->shift;
  	unsigned int rshift = mc->rshift;
  	int max = mc->max;
  	int mask = (1 << fls(max)) - 1;
  
  	ucontrol->value.integer.value[0] =
  		(snd_soc_read(codec, reg) >> shift) & mask;
  	if (ucontrol->value.integer.value[0])
  		ucontrol->value.integer.value[0] =
  			max + 1 - ucontrol->value.integer.value[0];
  
  	if (shift != rshift) {
  		ucontrol->value.integer.value[1] =
  			(snd_soc_read(codec, reg) >> rshift) & mask;
  		if (ucontrol->value.integer.value[1])
  			ucontrol->value.integer.value[1] =
  				max + 1 - ucontrol->value.integer.value[1];
  	}
  
  	return 0;
  }
  
  static int snd_soc_put_volsw_twl4030(struct snd_kcontrol *kcontrol,
  				     struct snd_ctl_elem_value *ucontrol)
  {
  	struct soc_mixer_control *mc =
  		(struct soc_mixer_control *)kcontrol->private_value;
  	struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
  	unsigned int reg = mc->reg;
  	unsigned int shift = mc->shift;
  	unsigned int rshift = mc->rshift;
  	int max = mc->max;
  	int mask = (1 << fls(max)) - 1;
  	unsigned short val, val2, val_mask;
  
  	val = (ucontrol->value.integer.value[0] & mask);
  
  	val_mask = mask << shift;
  	if (val)
  		val = max + 1 - val;
  	val = val << shift;
  	if (shift != rshift) {
  		val2 = (ucontrol->value.integer.value[1] & mask);
  		val_mask |= mask << rshift;
  		if (val2)
  			val2 = max + 1 - val2;
  		val |= val2 << rshift;
  	}
  	return snd_soc_update_bits(codec, reg, val_mask, val);
  }
  
  static int snd_soc_get_volsw_r2_twl4030(struct snd_kcontrol *kcontrol,
  					struct snd_ctl_elem_value *ucontrol)
  {
  	struct soc_mixer_control *mc =
  		(struct soc_mixer_control *)kcontrol->private_value;
  	struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
  	unsigned int reg = mc->reg;
  	unsigned int reg2 = mc->rreg;
  	unsigned int shift = mc->shift;
  	int max = mc->max;
  	int mask = (1<<fls(max))-1;
  
  	ucontrol->value.integer.value[0] =
  		(snd_soc_read(codec, reg) >> shift) & mask;
  	ucontrol->value.integer.value[1] =
  		(snd_soc_read(codec, reg2) >> shift) & mask;
  
  	if (ucontrol->value.integer.value[0])
  		ucontrol->value.integer.value[0] =
  			max + 1 - ucontrol->value.integer.value[0];
  	if (ucontrol->value.integer.value[1])
  		ucontrol->value.integer.value[1] =
  			max + 1 - ucontrol->value.integer.value[1];
  
  	return 0;
  }
  
  static int snd_soc_put_volsw_r2_twl4030(struct snd_kcontrol *kcontrol,
  					struct snd_ctl_elem_value *ucontrol)
  {
  	struct soc_mixer_control *mc =
  		(struct soc_mixer_control *)kcontrol->private_value;
  	struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
  	unsigned int reg = mc->reg;
  	unsigned int reg2 = mc->rreg;
  	unsigned int shift = mc->shift;
  	int max = mc->max;
  	int mask = (1 << fls(max)) - 1;
  	int err;
  	unsigned short val, val2, val_mask;
  
  	val_mask = mask << shift;
  	val = (ucontrol->value.integer.value[0] & mask);
  	val2 = (ucontrol->value.integer.value[1] & mask);
  
  	if (val)
  		val = max + 1 - val;
  	if (val2)
  		val2 = max + 1 - val2;
  
  	val = val << shift;
  	val2 = val2 << shift;
  
  	err = snd_soc_update_bits(codec, reg, val_mask, val);
  	if (err < 0)
  		return err;
  
  	err = snd_soc_update_bits(codec, reg2, val_mask, val2);
  	return err;
  }
  
  /* Codec operation modes */
  static const char *twl4030_op_modes_texts[] = {
  	"Option 2 (voice/audio)", "Option 1 (audio)"
  };
  
  static const struct soc_enum twl4030_op_modes_enum =
  	SOC_ENUM_SINGLE(TWL4030_REG_CODEC_MODE, 0,
  			ARRAY_SIZE(twl4030_op_modes_texts),
  			twl4030_op_modes_texts);
  
  static int snd_soc_put_twl4030_opmode_enum_double(struct snd_kcontrol *kcontrol,
  	struct snd_ctl_elem_value *ucontrol)
  {
  	struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
  	struct twl4030_priv *twl4030 = snd_soc_codec_get_drvdata(codec);
  	struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
  	unsigned short val;
  	unsigned short mask;
  
  	if (twl4030->configured) {
  		dev_err(codec->dev,
  			"operation mode cannot be changed on-the-fly
  ");
  		return -EBUSY;
  	}
  
  	if (ucontrol->value.enumerated.item[0] > e->max - 1)
  		return -EINVAL;
  
  	val = ucontrol->value.enumerated.item[0] << e->shift_l;
  	mask = e->mask << e->shift_l;
  	if (e->shift_l != e->shift_r) {
  		if (ucontrol->value.enumerated.item[1] > e->max - 1)
  			return -EINVAL;
  		val |= ucontrol->value.enumerated.item[1] << e->shift_r;
  		mask |= e->mask << e->shift_r;
  	}
  
  	return snd_soc_update_bits(codec, e->reg, mask, val);
  }
  
  /*
   * FGAIN volume control:
   * from -62 to 0 dB in 1 dB steps (mute instead of -63 dB)
   */
  static DECLARE_TLV_DB_SCALE(digital_fine_tlv, -6300, 100, 1);
  
  /*
   * CGAIN volume control:
   * 0 dB to 12 dB in 6 dB steps
   * value 2 and 3 means 12 dB
   */
  static DECLARE_TLV_DB_SCALE(digital_coarse_tlv, 0, 600, 0);
  
  /*
   * Voice Downlink GAIN volume control:
   * from -37 to 12 dB in 1 dB steps (mute instead of -37 dB)
   */
  static DECLARE_TLV_DB_SCALE(digital_voice_downlink_tlv, -3700, 100, 1);
  
  /*
   * Analog playback gain
   * -24 dB to 12 dB in 2 dB steps
   */
  static DECLARE_TLV_DB_SCALE(analog_tlv, -2400, 200, 0);
  
  /*
   * Gain controls tied to outputs
   * -6 dB to 6 dB in 6 dB steps (mute instead of -12)
   */
  static DECLARE_TLV_DB_SCALE(output_tvl, -1200, 600, 1);
  
  /*
   * Gain control for earpiece amplifier
   * 0 dB to 12 dB in 6 dB steps (mute instead of -6)
   */
  static DECLARE_TLV_DB_SCALE(output_ear_tvl, -600, 600, 1);
  
  /*
   * Capture gain after the ADCs
   * from 0 dB to 31 dB in 1 dB steps
   */
  static DECLARE_TLV_DB_SCALE(digital_capture_tlv, 0, 100, 0);
  
  /*
   * Gain control for input amplifiers
   * 0 dB to 30 dB in 6 dB steps
   */
  static DECLARE_TLV_DB_SCALE(input_gain_tlv, 0, 600, 0);
  
  /* AVADC clock priority */
  static const char *twl4030_avadc_clk_priority_texts[] = {
  	"Voice high priority", "HiFi high priority"
  };
  
  static const struct soc_enum twl4030_avadc_clk_priority_enum =
  	SOC_ENUM_SINGLE(TWL4030_REG_AVADC_CTL, 2,
  			ARRAY_SIZE(twl4030_avadc_clk_priority_texts),
  			twl4030_avadc_clk_priority_texts);
  
  static const char *twl4030_rampdelay_texts[] = {
  	"27/20/14 ms", "55/40/27 ms", "109/81/55 ms", "218/161/109 ms",
  	"437/323/218 ms", "874/645/437 ms", "1748/1291/874 ms",
  	"3495/2581/1748 ms"
  };
  
  static const struct soc_enum twl4030_rampdelay_enum =
  	SOC_ENUM_SINGLE(TWL4030_REG_HS_POPN_SET, 2,
  			ARRAY_SIZE(twl4030_rampdelay_texts),
  			twl4030_rampdelay_texts);
  
  /* Vibra H-bridge direction mode */
  static const char *twl4030_vibradirmode_texts[] = {
  	"Vibra H-bridge direction", "Audio data MSB",
  };
  
  static const struct soc_enum twl4030_vibradirmode_enum =
  	SOC_ENUM_SINGLE(TWL4030_REG_VIBRA_CTL, 5,
  			ARRAY_SIZE(twl4030_vibradirmode_texts),
  			twl4030_vibradirmode_texts);
  
  /* Vibra H-bridge direction */
  static const char *twl4030_vibradir_texts[] = {
  	"Positive polarity", "Negative polarity",
  };
  
  static const struct soc_enum twl4030_vibradir_enum =
  	SOC_ENUM_SINGLE(TWL4030_REG_VIBRA_CTL, 1,
  			ARRAY_SIZE(twl4030_vibradir_texts),
  			twl4030_vibradir_texts);
  
  /* Digimic Left and right swapping */
  static const char *twl4030_digimicswap_texts[] = {
  	"Not swapped", "Swapped",
  };
  
  static const struct soc_enum twl4030_digimicswap_enum =
  	SOC_ENUM_SINGLE(TWL4030_REG_MISC_SET_1, 0,
  			ARRAY_SIZE(twl4030_digimicswap_texts),
  			twl4030_digimicswap_texts);
  
  static const struct snd_kcontrol_new twl4030_snd_controls[] = {
  	/* Codec operation mode control */
  	SOC_ENUM_EXT("Codec Operation Mode", twl4030_op_modes_enum,
  		snd_soc_get_enum_double,
  		snd_soc_put_twl4030_opmode_enum_double),
  
  	/* Common playback gain controls */
  	SOC_DOUBLE_R_TLV("DAC1 Digital Fine Playback Volume",
  		TWL4030_REG_ARXL1PGA, TWL4030_REG_ARXR1PGA,
  		0, 0x3f, 0, digital_fine_tlv),
  	SOC_DOUBLE_R_TLV("DAC2 Digital Fine Playback Volume",
  		TWL4030_REG_ARXL2PGA, TWL4030_REG_ARXR2PGA,
  		0, 0x3f, 0, digital_fine_tlv),
  
  	SOC_DOUBLE_R_TLV("DAC1 Digital Coarse Playback Volume",
  		TWL4030_REG_ARXL1PGA, TWL4030_REG_ARXR1PGA,
  		6, 0x2, 0, digital_coarse_tlv),
  	SOC_DOUBLE_R_TLV("DAC2 Digital Coarse Playback Volume",
  		TWL4030_REG_ARXL2PGA, TWL4030_REG_ARXR2PGA,
  		6, 0x2, 0, digital_coarse_tlv),
  
  	SOC_DOUBLE_R_TLV("DAC1 Analog Playback Volume",
  		TWL4030_REG_ARXL1_APGA_CTL, TWL4030_REG_ARXR1_APGA_CTL,
  		3, 0x12, 1, analog_tlv),
  	SOC_DOUBLE_R_TLV("DAC2 Analog Playback Volume",
  		TWL4030_REG_ARXL2_APGA_CTL, TWL4030_REG_ARXR2_APGA_CTL,
  		3, 0x12, 1, analog_tlv),
  	SOC_DOUBLE_R("DAC1 Analog Playback Switch",
  		TWL4030_REG_ARXL1_APGA_CTL, TWL4030_REG_ARXR1_APGA_CTL,
  		1, 1, 0),
  	SOC_DOUBLE_R("DAC2 Analog Playback Switch",
  		TWL4030_REG_ARXL2_APGA_CTL, TWL4030_REG_ARXR2_APGA_CTL,
  		1, 1, 0),
  
  	/* Common voice downlink gain controls */
  	SOC_SINGLE_TLV("DAC Voice Digital Downlink Volume",
  		TWL4030_REG_VRXPGA, 0, 0x31, 0, digital_voice_downlink_tlv),
  
  	SOC_SINGLE_TLV("DAC Voice Analog Downlink Volume",
  		TWL4030_REG_VDL_APGA_CTL, 3, 0x12, 1, analog_tlv),
  
  	SOC_SINGLE("DAC Voice Analog Downlink Switch",
  		TWL4030_REG_VDL_APGA_CTL, 1, 1, 0),
  
  	/* Separate output gain controls */
  	SOC_DOUBLE_R_EXT_TLV("PreDriv Playback Volume",
  		TWL4030_REG_PREDL_CTL, TWL4030_REG_PREDR_CTL,
  		4, 3, 0, snd_soc_get_volsw_r2_twl4030,
  		snd_soc_put_volsw_r2_twl4030, output_tvl),
  
  	SOC_DOUBLE_EXT_TLV("Headset Playback Volume",
  		TWL4030_REG_HS_GAIN_SET, 0, 2, 3, 0, snd_soc_get_volsw_twl4030,
  		snd_soc_put_volsw_twl4030, output_tvl),
  
  	SOC_DOUBLE_R_EXT_TLV("Carkit Playback Volume",
  		TWL4030_REG_PRECKL_CTL, TWL4030_REG_PRECKR_CTL,
  		4, 3, 0, snd_soc_get_volsw_r2_twl4030,
  		snd_soc_put_volsw_r2_twl4030, output_tvl),
  
  	SOC_SINGLE_EXT_TLV("Earpiece Playback Volume",
  		TWL4030_REG_EAR_CTL, 4, 3, 0, snd_soc_get_volsw_twl4030,
  		snd_soc_put_volsw_twl4030, output_ear_tvl),
  
  	/* Common capture gain controls */
  	SOC_DOUBLE_R_TLV("TX1 Digital Capture Volume",
  		TWL4030_REG_ATXL1PGA, TWL4030_REG_ATXR1PGA,
  		0, 0x1f, 0, digital_capture_tlv),
  	SOC_DOUBLE_R_TLV("TX2 Digital Capture Volume",
  		TWL4030_REG_AVTXL2PGA, TWL4030_REG_AVTXR2PGA,
  		0, 0x1f, 0, digital_capture_tlv),
  
  	SOC_DOUBLE_TLV("Analog Capture Volume", TWL4030_REG_ANAMIC_GAIN,
  		0, 3, 5, 0, input_gain_tlv),
  
  	SOC_ENUM("AVADC Clock Priority", twl4030_avadc_clk_priority_enum),
  
  	SOC_ENUM("HS ramp delay", twl4030_rampdelay_enum),
  
  	SOC_ENUM("Vibra H-bridge mode", twl4030_vibradirmode_enum),
  	SOC_ENUM("Vibra H-bridge direction", twl4030_vibradir_enum),
  
  	SOC_ENUM("Digimic LR Swap", twl4030_digimicswap_enum),
  };
  
  static const struct snd_soc_dapm_widget twl4030_dapm_widgets[] = {
  	/* Left channel inputs */
  	SND_SOC_DAPM_INPUT("MAINMIC"),
  	SND_SOC_DAPM_INPUT("HSMIC"),
  	SND_SOC_DAPM_INPUT("AUXL"),
  	SND_SOC_DAPM_INPUT("CARKITMIC"),
  	/* Right channel inputs */
  	SND_SOC_DAPM_INPUT("SUBMIC"),
  	SND_SOC_DAPM_INPUT("AUXR"),
  	/* Digital microphones (Stereo) */
  	SND_SOC_DAPM_INPUT("DIGIMIC0"),
  	SND_SOC_DAPM_INPUT("DIGIMIC1"),
  
  	/* Outputs */
  	SND_SOC_DAPM_OUTPUT("EARPIECE"),
  	SND_SOC_DAPM_OUTPUT("PREDRIVEL"),
  	SND_SOC_DAPM_OUTPUT("PREDRIVER"),
  	SND_SOC_DAPM_OUTPUT("HSOL"),
  	SND_SOC_DAPM_OUTPUT("HSOR"),
  	SND_SOC_DAPM_OUTPUT("CARKITL"),
  	SND_SOC_DAPM_OUTPUT("CARKITR"),
  	SND_SOC_DAPM_OUTPUT("HFL"),
  	SND_SOC_DAPM_OUTPUT("HFR"),
  	SND_SOC_DAPM_OUTPUT("VIBRA"),
  
  	/* AIF and APLL clocks for running DAIs (including loopback) */
  	SND_SOC_DAPM_OUTPUT("Virtual HiFi OUT"),
  	SND_SOC_DAPM_INPUT("Virtual HiFi IN"),
  	SND_SOC_DAPM_OUTPUT("Virtual Voice OUT"),
  
  	/* DACs */
  	SND_SOC_DAPM_DAC("DAC Right1", NULL, SND_SOC_NOPM, 0, 0),
  	SND_SOC_DAPM_DAC("DAC Left1", NULL, SND_SOC_NOPM, 0, 0),
  	SND_SOC_DAPM_DAC("DAC Right2", NULL, SND_SOC_NOPM, 0, 0),
  	SND_SOC_DAPM_DAC("DAC Left2", NULL, SND_SOC_NOPM, 0, 0),
  	SND_SOC_DAPM_DAC("DAC Voice", NULL, SND_SOC_NOPM, 0, 0),
  
  	SND_SOC_DAPM_AIF_IN("VAIFIN", "Voice Playback", 0,
  			    TWL4030_REG_VOICE_IF, 6, 0),
  
  	/* Analog bypasses */
  	SND_SOC_DAPM_SWITCH("Right1 Analog Loopback", SND_SOC_NOPM, 0, 0,
  			&twl4030_dapm_abypassr1_control),
  	SND_SOC_DAPM_SWITCH("Left1 Analog Loopback", SND_SOC_NOPM, 0, 0,
  			&twl4030_dapm_abypassl1_control),
  	SND_SOC_DAPM_SWITCH("Right2 Analog Loopback", SND_SOC_NOPM, 0, 0,
  			&twl4030_dapm_abypassr2_control),
  	SND_SOC_DAPM_SWITCH("Left2 Analog Loopback", SND_SOC_NOPM, 0, 0,
  			&twl4030_dapm_abypassl2_control),
  	SND_SOC_DAPM_SWITCH("Voice Analog Loopback", SND_SOC_NOPM, 0, 0,
  			&twl4030_dapm_abypassv_control),
  
  	/* Master analog loopback switch */
  	SND_SOC_DAPM_SUPPLY("FM Loop Enable", TWL4030_REG_MISC_SET_1, 5, 0,
  			    NULL, 0),
  
  	/* Digital bypasses */
  	SND_SOC_DAPM_SWITCH("Left Digital Loopback", SND_SOC_NOPM, 0, 0,
  			&twl4030_dapm_dbypassl_control),
  	SND_SOC_DAPM_SWITCH("Right Digital Loopback", SND_SOC_NOPM, 0, 0,
  			&twl4030_dapm_dbypassr_control),
  	SND_SOC_DAPM_SWITCH("Voice Digital Loopback", SND_SOC_NOPM, 0, 0,
  			&twl4030_dapm_dbypassv_control),
  
  	/* Digital mixers, power control for the physical DACs */
  	SND_SOC_DAPM_MIXER("Digital R1 Playback Mixer",
  			TWL4030_REG_AVDAC_CTL, 0, 0, NULL, 0),
  	SND_SOC_DAPM_MIXER("Digital L1 Playback Mixer",
  			TWL4030_REG_AVDAC_CTL, 1, 0, NULL, 0),
  	SND_SOC_DAPM_MIXER("Digital R2 Playback Mixer",
  			TWL4030_REG_AVDAC_CTL, 2, 0, NULL, 0),
  	SND_SOC_DAPM_MIXER("Digital L2 Playback Mixer",
  			TWL4030_REG_AVDAC_CTL, 3, 0, NULL, 0),
  	SND_SOC_DAPM_MIXER("Digital Voice Playback Mixer",
  			TWL4030_REG_AVDAC_CTL, 4, 0, NULL, 0),
  
  	/* Analog mixers, power control for the physical PGAs */
  	SND_SOC_DAPM_MIXER("Analog R1 Playback Mixer",
  			TWL4030_REG_ARXR1_APGA_CTL, 0, 0, NULL, 0),
  	SND_SOC_DAPM_MIXER("Analog L1 Playback Mixer",
  			TWL4030_REG_ARXL1_APGA_CTL, 0, 0, NULL, 0),
  	SND_SOC_DAPM_MIXER("Analog R2 Playback Mixer",
  			TWL4030_REG_ARXR2_APGA_CTL, 0, 0, NULL, 0),
  	SND_SOC_DAPM_MIXER("Analog L2 Playback Mixer",
  			TWL4030_REG_ARXL2_APGA_CTL, 0, 0, NULL, 0),
  	SND_SOC_DAPM_MIXER("Analog Voice Playback Mixer",
  			TWL4030_REG_VDL_APGA_CTL, 0, 0, NULL, 0),
  
  	SND_SOC_DAPM_SUPPLY("APLL Enable", SND_SOC_NOPM, 0, 0, apll_event,
  			    SND_SOC_DAPM_PRE_PMU|SND_SOC_DAPM_POST_PMD),
  
  	SND_SOC_DAPM_SUPPLY("AIF Enable", SND_SOC_NOPM, 0, 0, aif_event,
  			    SND_SOC_DAPM_PRE_PMU|SND_SOC_DAPM_POST_PMD),
  
  	/* Output MIXER controls */
  	/* Earpiece */
  	SND_SOC_DAPM_MIXER("Earpiece Mixer", SND_SOC_NOPM, 0, 0,
  			&twl4030_dapm_earpiece_controls[0],
  			ARRAY_SIZE(twl4030_dapm_earpiece_controls)),
  	SND_SOC_DAPM_PGA_E("Earpiece PGA", SND_SOC_NOPM,
  			0, 0, NULL, 0, earpiecepga_event,
  			SND_SOC_DAPM_POST_PMU|SND_SOC_DAPM_POST_PMD),
  	/* PreDrivL/R */
  	SND_SOC_DAPM_MIXER("PredriveL Mixer", SND_SOC_NOPM, 0, 0,
  			&twl4030_dapm_predrivel_controls[0],
  			ARRAY_SIZE(twl4030_dapm_predrivel_controls)),
  	SND_SOC_DAPM_PGA_E("PredriveL PGA", SND_SOC_NOPM,
  			0, 0, NULL, 0, predrivelpga_event,
  			SND_SOC_DAPM_POST_PMU|SND_SOC_DAPM_POST_PMD),
  	SND_SOC_DAPM_MIXER("PredriveR Mixer", SND_SOC_NOPM, 0, 0,
  			&twl4030_dapm_predriver_controls[0],
  			ARRAY_SIZE(twl4030_dapm_predriver_controls)),
  	SND_SOC_DAPM_PGA_E("PredriveR PGA", SND_SOC_NOPM,
  			0, 0, NULL, 0, predriverpga_event,
  			SND_SOC_DAPM_POST_PMU|SND_SOC_DAPM_POST_PMD),
  	/* HeadsetL/R */
  	SND_SOC_DAPM_MIXER("HeadsetL Mixer", SND_SOC_NOPM, 0, 0,
  			&twl4030_dapm_hsol_controls[0],
  			ARRAY_SIZE(twl4030_dapm_hsol_controls)),
  	SND_SOC_DAPM_PGA_E("HeadsetL PGA", SND_SOC_NOPM,
  			0, 0, NULL, 0, headsetlpga_event,
  			SND_SOC_DAPM_POST_PMU|SND_SOC_DAPM_POST_PMD),
  	SND_SOC_DAPM_MIXER("HeadsetR Mixer", SND_SOC_NOPM, 0, 0,
  			&twl4030_dapm_hsor_controls[0],
  			ARRAY_SIZE(twl4030_dapm_hsor_controls)),
  	SND_SOC_DAPM_PGA_E("HeadsetR PGA", SND_SOC_NOPM,
  			0, 0, NULL, 0, headsetrpga_event,
  			SND_SOC_DAPM_POST_PMU|SND_SOC_DAPM_POST_PMD),
  	/* CarkitL/R */
  	SND_SOC_DAPM_MIXER("CarkitL Mixer", SND_SOC_NOPM, 0, 0,
  			&twl4030_dapm_carkitl_controls[0],
  			ARRAY_SIZE(twl4030_dapm_carkitl_controls)),
  	SND_SOC_DAPM_PGA_E("CarkitL PGA", SND_SOC_NOPM,
  			0, 0, NULL, 0, carkitlpga_event,
  			SND_SOC_DAPM_POST_PMU|SND_SOC_DAPM_POST_PMD),
  	SND_SOC_DAPM_MIXER("CarkitR Mixer", SND_SOC_NOPM, 0, 0,
  			&twl4030_dapm_carkitr_controls[0],
  			ARRAY_SIZE(twl4030_dapm_carkitr_controls)),
  	SND_SOC_DAPM_PGA_E("CarkitR PGA", SND_SOC_NOPM,
  			0, 0, NULL, 0, carkitrpga_event,
  			SND_SOC_DAPM_POST_PMU|SND_SOC_DAPM_POST_PMD),
  
  	/* Output MUX controls */
  	/* HandsfreeL/R */
  	SND_SOC_DAPM_MUX("HandsfreeL Mux", SND_SOC_NOPM, 0, 0,
  		&twl4030_dapm_handsfreel_control),
  	SND_SOC_DAPM_SWITCH("HandsfreeL", SND_SOC_NOPM, 0, 0,
  			&twl4030_dapm_handsfreelmute_control),
  	SND_SOC_DAPM_PGA_E("HandsfreeL PGA", SND_SOC_NOPM,
  			0, 0, NULL, 0, handsfreelpga_event,
  			SND_SOC_DAPM_POST_PMU|SND_SOC_DAPM_POST_PMD),
  	SND_SOC_DAPM_MUX("HandsfreeR Mux", SND_SOC_NOPM, 5, 0,
  		&twl4030_dapm_handsfreer_control),
  	SND_SOC_DAPM_SWITCH("HandsfreeR", SND_SOC_NOPM, 0, 0,
  			&twl4030_dapm_handsfreermute_control),
  	SND_SOC_DAPM_PGA_E("HandsfreeR PGA", SND_SOC_NOPM,
  			0, 0, NULL, 0, handsfreerpga_event,
  			SND_SOC_DAPM_POST_PMU|SND_SOC_DAPM_POST_PMD),
  	/* Vibra */
  	SND_SOC_DAPM_MUX_E("Vibra Mux", TWL4030_REG_VIBRA_CTL, 0, 0,
  			   &twl4030_dapm_vibra_control, vibramux_event,
  			   SND_SOC_DAPM_PRE_PMU),
  	SND_SOC_DAPM_MUX("Vibra Route", SND_SOC_NOPM, 0, 0,
  		&twl4030_dapm_vibrapath_control),
  
  	/* Introducing four virtual ADC, since TWL4030 have four channel for
  	   capture */
  	SND_SOC_DAPM_ADC("ADC Virtual Left1", NULL, SND_SOC_NOPM, 0, 0),
  	SND_SOC_DAPM_ADC("ADC Virtual Right1", NULL, SND_SOC_NOPM, 0, 0),
  	SND_SOC_DAPM_ADC("ADC Virtual Left2", NULL, SND_SOC_NOPM, 0, 0),
  	SND_SOC_DAPM_ADC("ADC Virtual Right2", NULL, SND_SOC_NOPM, 0, 0),
  
  	SND_SOC_DAPM_AIF_OUT("VAIFOUT", "Voice Capture", 0,
  			     TWL4030_REG_VOICE_IF, 5, 0),
  
  	/* Analog/Digital mic path selection.
  	   TX1 Left/Right: either analog Left/Right or Digimic0
  	   TX2 Left/Right: either analog Left/Right or Digimic1 */
  	SND_SOC_DAPM_MUX("TX1 Capture Route", SND_SOC_NOPM, 0, 0,
  		&twl4030_dapm_micpathtx1_control),
  	SND_SOC_DAPM_MUX("TX2 Capture Route", SND_SOC_NOPM, 0, 0,
  		&twl4030_dapm_micpathtx2_control),
  
  	/* Analog input mixers for the capture amplifiers */
  	SND_SOC_DAPM_MIXER("Analog Left",
  		TWL4030_REG_ANAMICL, 4, 0,
  		&twl4030_dapm_analoglmic_controls[0],
  		ARRAY_SIZE(twl4030_dapm_analoglmic_controls)),
  	SND_SOC_DAPM_MIXER("Analog Right",
  		TWL4030_REG_ANAMICR, 4, 0,
  		&twl4030_dapm_analogrmic_controls[0],
  		ARRAY_SIZE(twl4030_dapm_analogrmic_controls)),
  
  	SND_SOC_DAPM_PGA("ADC Physical Left",
  		TWL4030_REG_AVADC_CTL, 3, 0, NULL, 0),
  	SND_SOC_DAPM_PGA("ADC Physical Right",
  		TWL4030_REG_AVADC_CTL, 1, 0, NULL, 0),
  
  	SND_SOC_DAPM_PGA_E("Digimic0 Enable",
  		TWL4030_REG_ADCMICSEL, 1, 0, NULL, 0,
  		digimic_event, SND_SOC_DAPM_POST_PMU),
  	SND_SOC_DAPM_PGA_E("Digimic1 Enable",
  		TWL4030_REG_ADCMICSEL, 3, 0, NULL, 0,
  		digimic_event, SND_SOC_DAPM_POST_PMU),
  
  	SND_SOC_DAPM_SUPPLY("micbias1 select", TWL4030_REG_MICBIAS_CTL, 5, 0,
  			    NULL, 0),
  	SND_SOC_DAPM_SUPPLY("micbias2 select", TWL4030_REG_MICBIAS_CTL, 6, 0,
  			    NULL, 0),
  
  	/* Microphone bias */
  	SND_SOC_DAPM_SUPPLY("Mic Bias 1",
  			    TWL4030_REG_MICBIAS_CTL, 0, 0, NULL, 0),
  	SND_SOC_DAPM_SUPPLY("Mic Bias 2",
  			    TWL4030_REG_MICBIAS_CTL, 1, 0, NULL, 0),
  	SND_SOC_DAPM_SUPPLY("Headset Mic Bias",
  			    TWL4030_REG_MICBIAS_CTL, 2, 0, NULL, 0),
  
  	SND_SOC_DAPM_SUPPLY("VIF Enable", TWL4030_REG_VOICE_IF, 0, 0, NULL, 0),
  };
  
  static const struct snd_soc_dapm_route intercon[] = {
  	/* Stream -> DAC mapping */
  	{"DAC Right1", NULL, "HiFi Playback"},
  	{"DAC Left1", NULL, "HiFi Playback"},
  	{"DAC Right2", NULL, "HiFi Playback"},
  	{"DAC Left2", NULL, "HiFi Playback"},
  	{"DAC Voice", NULL, "VAIFIN"},
  
  	/* ADC -> Stream mapping */
  	{"HiFi Capture", NULL, "ADC Virtual Left1"},
  	{"HiFi Capture", NULL, "ADC Virtual Right1"},
  	{"HiFi Capture", NULL, "ADC Virtual Left2"},
  	{"HiFi Capture", NULL, "ADC Virtual Right2"},
  	{"VAIFOUT", NULL, "ADC Virtual Left2"},
  	{"VAIFOUT", NULL, "ADC Virtual Right2"},
  	{"VAIFOUT", NULL, "VIF Enable"},
  
  	{"Digital L1 Playback Mixer", NULL, "DAC Left1"},
  	{"Digital R1 Playback Mixer", NULL, "DAC Right1"},
  	{"Digital L2 Playback Mixer", NULL, "DAC Left2"},
  	{"Digital R2 Playback Mixer", NULL, "DAC Right2"},
  	{"Digital Voice Playback Mixer", NULL, "DAC Voice"},
  
  	/* Supply for the digital part (APLL) */
  	{"Digital Voice Playback Mixer", NULL, "APLL Enable"},
  
  	{"DAC Left1", NULL, "AIF Enable"},
  	{"DAC Right1", NULL, "AIF Enable"},
  	{"DAC Left2", NULL, "AIF Enable"},
  	{"DAC Right1", NULL, "AIF Enable"},
  	{"DAC Voice", NULL, "VIF Enable"},
  
  	{"Digital R2 Playback Mixer", NULL, "AIF Enable"},
  	{"Digital L2 Playback Mixer", NULL, "AIF Enable"},
  
  	{"Analog L1 Playback Mixer", NULL, "Digital L1 Playback Mixer"},
  	{"Analog R1 Playback Mixer", NULL, "Digital R1 Playback Mixer"},
  	{"Analog L2 Playback Mixer", NULL, "Digital L2 Playback Mixer"},
  	{"Analog R2 Playback Mixer", NULL, "Digital R2 Playback Mixer"},
  	{"Analog Voice Playback Mixer", NULL, "Digital Voice Playback Mixer"},
  
  	/* Internal playback routings */
  	/* Earpiece */
  	{"Earpiece Mixer", "Voice", "Analog Voice Playback Mixer"},
  	{"Earpiece Mixer", "AudioL1", "Analog L1 Playback Mixer"},
  	{"Earpiece Mixer", "AudioL2", "Analog L2 Playback Mixer"},
  	{"Earpiece Mixer", "AudioR1", "Analog R1 Playback Mixer"},
  	{"Earpiece PGA", NULL, "Earpiece Mixer"},
  	/* PreDrivL */
  	{"PredriveL Mixer", "Voice", "Analog Voice Playback Mixer"},
  	{"PredriveL Mixer", "AudioL1", "Analog L1 Playback Mixer"},
  	{"PredriveL Mixer", "AudioL2", "Analog L2 Playback Mixer"},
  	{"PredriveL Mixer", "AudioR2", "Analog R2 Playback Mixer"},
  	{"PredriveL PGA", NULL, "PredriveL Mixer"},
  	/* PreDrivR */
  	{"PredriveR Mixer", "Voice", "Analog Voice Playback Mixer"},
  	{"PredriveR Mixer", "AudioR1", "Analog R1 Playback Mixer"},
  	{"PredriveR Mixer", "AudioR2", "Analog R2 Playback Mixer"},
  	{"PredriveR Mixer", "AudioL2", "Analog L2 Playback Mixer"},
  	{"PredriveR PGA", NULL, "PredriveR Mixer"},
  	/* HeadsetL */
  	{"HeadsetL Mixer", "Voice", "Analog Voice Playback Mixer"},
  	{"HeadsetL Mixer", "AudioL1", "Analog L1 Playback Mixer"},
  	{"HeadsetL Mixer", "AudioL2", "Analog L2 Playback Mixer"},
  	{"HeadsetL PGA", NULL, "HeadsetL Mixer"},
  	/* HeadsetR */
  	{"HeadsetR Mixer", "Voice", "Analog Voice Playback Mixer"},
  	{"HeadsetR Mixer", "AudioR1", "Analog R1 Playback Mixer"},
  	{"HeadsetR Mixer", "AudioR2", "Analog R2 Playback Mixer"},
  	{"HeadsetR PGA", NULL, "HeadsetR Mixer"},
  	/* CarkitL */
  	{"CarkitL Mixer", "Voice", "Analog Voice Playback Mixer"},
  	{"CarkitL Mixer", "AudioL1", "Analog L1 Playback Mixer"},
  	{"CarkitL Mixer", "AudioL2", "Analog L2 Playback Mixer"},
  	{"CarkitL PGA", NULL, "CarkitL Mixer"},
  	/* CarkitR */
  	{"CarkitR Mixer", "Voice", "Analog Voice Playback Mixer"},
  	{"CarkitR Mixer", "AudioR1", "Analog R1 Playback Mixer"},
  	{"CarkitR Mixer", "AudioR2", "Analog R2 Playback Mixer"},
  	{"CarkitR PGA", NULL, "CarkitR Mixer"},
  	/* HandsfreeL */
  	{"HandsfreeL Mux", "Voice", "Analog Voice Playback Mixer"},
  	{"HandsfreeL Mux", "AudioL1", "Analog L1 Playback Mixer"},
  	{"HandsfreeL Mux", "AudioL2", "Analog L2 Playback Mixer"},
  	{"HandsfreeL Mux", "AudioR2", "Analog R2 Playback Mixer"},
  	{"HandsfreeL", "Switch", "HandsfreeL Mux"},
  	{"HandsfreeL PGA", NULL, "HandsfreeL"},
  	/* HandsfreeR */
  	{"HandsfreeR Mux", "Voice", "Analog Voice Playback Mixer"},
  	{"HandsfreeR Mux", "AudioR1", "Analog R1 Playback Mixer"},
  	{"HandsfreeR Mux", "AudioR2", "Analog R2 Playback Mixer"},
  	{"HandsfreeR Mux", "AudioL2", "Analog L2 Playback Mixer"},
  	{"HandsfreeR", "Switch", "HandsfreeR Mux"},
  	{"HandsfreeR PGA", NULL, "HandsfreeR"},
  	/* Vibra */
  	{"Vibra Mux", "AudioL1", "DAC Left1"},
  	{"Vibra Mux", "AudioR1", "DAC Right1"},
  	{"Vibra Mux", "AudioL2", "DAC Left2"},
  	{"Vibra Mux", "AudioR2", "DAC Right2"},
  
  	/* outputs */
  	/* Must be always connected (for AIF and APLL) */
  	{"Virtual HiFi OUT", NULL, "DAC Left1"},
  	{"Virtual HiFi OUT", NULL, "DAC Right1"},
  	{"Virtual HiFi OUT", NULL, "DAC Left2"},
  	{"Virtual HiFi OUT", NULL, "DAC Right2"},
  	/* Must be always connected (for APLL) */
  	{"Virtual Voice OUT", NULL, "Digital Voice Playback Mixer"},
  	/* Physical outputs */
  	{"EARPIECE", NULL, "Earpiece PGA"},
  	{"PREDRIVEL", NULL, "PredriveL PGA"},
  	{"PREDRIVER", NULL, "PredriveR PGA"},
  	{"HSOL", NULL, "HeadsetL PGA"},
  	{"HSOR", NULL, "HeadsetR PGA"},
  	{"CARKITL", NULL, "CarkitL PGA"},
  	{"CARKITR", NULL, "CarkitR PGA"},
  	{"HFL", NULL, "HandsfreeL PGA"},
  	{"HFR", NULL, "HandsfreeR PGA"},
  	{"Vibra Route", "Audio", "Vibra Mux"},
  	{"VIBRA", NULL, "Vibra Route"},
  
  	/* Capture path */
  	/* Must be always connected (for AIF and APLL) */
  	{"ADC Virtual Left1", NULL, "Virtual HiFi IN"},
  	{"ADC Virtual Right1", NULL, "Virtual HiFi IN"},
  	{"ADC Virtual Left2", NULL, "Virtual HiFi IN"},
  	{"ADC Virtual Right2", NULL, "Virtual HiFi IN"},
  	/* Physical inputs */
  	{"Analog Left", "Main Mic Capture Switch", "MAINMIC"},
  	{"Analog Left", "Headset Mic Capture Switch", "HSMIC"},
  	{"Analog Left", "AUXL Capture Switch", "AUXL"},
  	{"Analog Left", "Carkit Mic Capture Switch", "CARKITMIC"},
  
  	{"Analog Right", "Sub Mic Capture Switch", "SUBMIC"},
  	{"Analog Right", "AUXR Capture Switch", "AUXR"},
  
  	{"ADC Physical Left", NULL, "Analog Left"},
  	{"ADC Physical Right", NULL, "Analog Right"},
  
  	{"Digimic0 Enable", NULL, "DIGIMIC0"},
  	{"Digimic1 Enable", NULL, "DIGIMIC1"},
  
  	{"DIGIMIC0", NULL, "micbias1 select"},
  	{"DIGIMIC1", NULL, "micbias2 select"},
  
  	/* TX1 Left capture path */
  	{"TX1 Capture Route", "Analog", "ADC Physical Left"},
  	{"TX1 Capture Route", "Digimic0", "Digimic0 Enable"},
  	/* TX1 Right capture path */
  	{"TX1 Capture Route", "Analog", "ADC Physical Right"},
  	{"TX1 Capture Route", "Digimic0", "Digimic0 Enable"},
  	/* TX2 Left capture path */
  	{"TX2 Capture Route", "Analog", "ADC Physical Left"},
  	{"TX2 Capture Route", "Digimic1", "Digimic1 Enable"},
  	/* TX2 Right capture path */
  	{"TX2 Capture Route", "Analog", "ADC Physical Right"},
  	{"TX2 Capture Route", "Digimic1", "Digimic1 Enable"},
  
  	{"ADC Virtual Left1", NULL, "TX1 Capture Route"},
  	{"ADC Virtual Right1", NULL, "TX1 Capture Route"},
  	{"ADC Virtual Left2", NULL, "TX2 Capture Route"},
  	{"ADC Virtual Right2", NULL, "TX2 Capture Route"},
  
  	{"ADC Virtual Left1", NULL, "AIF Enable"},
  	{"ADC Virtual Right1", NULL, "AIF Enable"},
  	{"ADC Virtual Left2", NULL, "AIF Enable"},
  	{"ADC Virtual Right2", NULL, "AIF Enable"},
  
  	/* Analog bypass routes */
  	{"Right1 Analog Loopback", "Switch", "Analog Right"},
  	{"Left1 Analog Loopback", "Switch", "Analog Left"},
  	{"Right2 Analog Loopback", "Switch", "Analog Right"},
  	{"Left2 Analog Loopback", "Switch", "Analog Left"},
  	{"Voice Analog Loopback", "Switch", "Analog Left"},
  
  	/* Supply for the Analog loopbacks */
  	{"Right1 Analog Loopback", NULL, "FM Loop Enable"},
  	{"Left1 Analog Loopback", NULL, "FM Loop Enable"},
  	{"Right2 Analog Loopback", NULL, "FM Loop Enable"},
  	{"Left2 Analog Loopback", NULL, "FM Loop Enable"},
  	{"Voice Analog Loopback", NULL, "FM Loop Enable"},
  
  	{"Analog R1 Playback Mixer", NULL, "Right1 Analog Loopback"},
  	{"Analog L1 Playback Mixer", NULL, "Left1 Analog Loopback"},
  	{"Analog R2 Playback Mixer", NULL, "Right2 Analog Loopback"},
  	{"Analog L2 Playback Mixer", NULL, "Left2 Analog Loopback"},
  	{"Analog Voice Playback Mixer", NULL, "Voice Analog Loopback"},
  
  	/* Digital bypass routes */
  	{"Right Digital Loopback", "Volume", "TX1 Capture Route"},
  	{"Left Digital Loopback", "Volume", "TX1 Capture Route"},
  	{"Voice Digital Loopback", "Volume", "TX2 Capture Route"},
  
  	{"Digital R2 Playback Mixer", NULL, "Right Digital Loopback"},
  	{"Digital L2 Playback Mixer", NULL, "Left Digital Loopback"},
  	{"Digital Voice Playback Mixer", NULL, "Voice Digital Loopback"},
  
  };
  
  static int twl4030_set_bias_level(struct snd_soc_codec *codec,
  				  enum snd_soc_bias_level level)
  {
  	switch (level) {
  	case SND_SOC_BIAS_ON:
  		break;
  	case SND_SOC_BIAS_PREPARE:
  		break;
  	case SND_SOC_BIAS_STANDBY:
  		if (codec->dapm.bias_level == SND_SOC_BIAS_OFF)
  			twl4030_codec_enable(codec, 1);
  		break;
  	case SND_SOC_BIAS_OFF:
  		twl4030_codec_enable(codec, 0);
  		break;
  	}
  	codec->dapm.bias_level = level;
  
  	return 0;
  }
  
  static void twl4030_constraints(struct twl4030_priv *twl4030,
  				struct snd_pcm_substream *mst_substream)
  {
  	struct snd_pcm_substream *slv_substream;
  
  	/* Pick the stream, which need to be constrained */
  	if (mst_substream == twl4030->master_substream)
  		slv_substream = twl4030->slave_substream;
  	else if (mst_substream == twl4030->slave_substream)
  		slv_substream = twl4030->master_substream;
  	else /* This should not happen.. */
  		return;
  
  	/* Set the constraints according to the already configured stream */
  	snd_pcm_hw_constraint_minmax(slv_substream->runtime,
  				SNDRV_PCM_HW_PARAM_RATE,
  				twl4030->rate,
  				twl4030->rate);
  
  	snd_pcm_hw_constraint_minmax(slv_substream->runtime,
  				SNDRV_PCM_HW_PARAM_SAMPLE_BITS,
  				twl4030->sample_bits,
  				twl4030->sample_bits);
  
  	snd_pcm_hw_constraint_minmax(slv_substream->runtime,
  				SNDRV_PCM_HW_PARAM_CHANNELS,
  				twl4030->channels,
  				twl4030->channels);
  }
  
  /* In case of 4 channel mode, the RX1 L/R for playback and the TX2 L/R for
   * capture has to be enabled/disabled. */
  static void twl4030_tdm_enable(struct snd_soc_codec *codec, int direction,
  			       int enable)
  {
  	u8 reg, mask;
  
  	reg = twl4030_read(codec, TWL4030_REG_OPTION);
  
  	if (direction == SNDRV_PCM_STREAM_PLAYBACK)
  		mask = TWL4030_ARXL1_VRX_EN | TWL4030_ARXR1_EN;
  	else
  		mask = TWL4030_ATXL2_VTXL_EN | TWL4030_ATXR2_VTXR_EN;
  
  	if (enable)
  		reg |= mask;
  	else
  		reg &= ~mask;
  
  	twl4030_write(codec, TWL4030_REG_OPTION, reg);
  }
  
  static int twl4030_startup(struct snd_pcm_substream *substream,
  			   struct snd_soc_dai *dai)
  {
  	struct snd_soc_codec *codec = dai->codec;
  	struct twl4030_priv *twl4030 = snd_soc_codec_get_drvdata(codec);
  
  	if (twl4030->master_substream) {
  		twl4030->slave_substream = substream;
  		/* The DAI has one configuration for playback and capture, so
  		 * if the DAI has been already configured then constrain this
  		 * substream to match it. */
  		if (twl4030->configured)
  			twl4030_constraints(twl4030, twl4030->master_substream);
  	} else {
  		if (!(twl4030_read(codec, TWL4030_REG_CODEC_MODE) &
  			TWL4030_OPTION_1)) {
  			/* In option2 4 channel is not supported, set the
  			 * constraint for the first stream for channels, the
  			 * second stream will 'inherit' this cosntraint */
  			snd_pcm_hw_constraint_minmax(substream->runtime,
  						     SNDRV_PCM_HW_PARAM_CHANNELS,
  						     2, 2);
  		}
  		twl4030->master_substream = substream;
  	}
  
  	return 0;
  }
  
  static void twl4030_shutdown(struct snd_pcm_substream *substream,
  			     struct snd_soc_dai *dai)
  {
  	struct snd_soc_codec *codec = dai->codec;
  	struct twl4030_priv *twl4030 = snd_soc_codec_get_drvdata(codec);
  
  	if (twl4030->master_substream == substream)
  		twl4030->master_substream = twl4030->slave_substream;
  
  	twl4030->slave_substream = NULL;
  
  	/* If all streams are closed, or the remaining stream has not yet
  	 * been configured than set the DAI as not configured. */
  	if (!twl4030->master_substream)
  		twl4030->configured = 0;
  	 else if (!twl4030->master_substream->runtime->channels)
  		twl4030->configured = 0;
  
  	 /* If the closing substream had 4 channel, do the necessary cleanup */
  	if (substream->runtime->channels == 4)
  		twl4030_tdm_enable(codec, substream->stream, 0);
  }
  
  static int twl4030_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 twl4030_priv *twl4030 = snd_soc_codec_get_drvdata(codec);
  	u8 mode, old_mode, format, old_format;
  
  	 /* If the substream has 4 channel, do the necessary setup */
  	if (params_channels(params) == 4) {
  		format = twl4030_read(codec, TWL4030_REG_AUDIO_IF);
  		mode = twl4030_read(codec, TWL4030_REG_CODEC_MODE);
  
  		/* Safety check: are we in the correct operating mode and
  		 * the interface is in TDM mode? */
  		if ((mode & TWL4030_OPTION_1) &&
  		    ((format & TWL4030_AIF_FORMAT) == TWL4030_AIF_FORMAT_TDM))
  			twl4030_tdm_enable(codec, substream->stream, 1);
  		else
  			return -EINVAL;
  	}
  
  	if (twl4030->configured)
  		/* Ignoring hw_params for already configured DAI */
  		return 0;
  
  	/* bit rate */
  	old_mode = twl4030_read(codec,
  				TWL4030_REG_CODEC_MODE) & ~TWL4030_CODECPDZ;
  	mode = old_mode & ~TWL4030_APLL_RATE;
  
  	switch (params_rate(params)) {
  	case 8000:
  		mode |= TWL4030_APLL_RATE_8000;
  		break;
  	case 11025:
  		mode |= TWL4030_APLL_RATE_11025;
  		break;
  	case 12000:
  		mode |= TWL4030_APLL_RATE_12000;
  		break;
  	case 16000:
  		mode |= TWL4030_APLL_RATE_16000;
  		break;
  	case 22050:
  		mode |= TWL4030_APLL_RATE_22050;
  		break;
  	case 24000:
  		mode |= TWL4030_APLL_RATE_24000;
  		break;
  	case 32000:
  		mode |= TWL4030_APLL_RATE_32000;
  		break;
  	case 44100:
  		mode |= TWL4030_APLL_RATE_44100;
  		break;
  	case 48000:
  		mode |= TWL4030_APLL_RATE_48000;
  		break;
  	case 96000:
  		mode |= TWL4030_APLL_RATE_96000;
  		break;
  	default:
  		dev_err(codec->dev, "%s: unknown rate %d
  ", __func__,
  			params_rate(params));
  		return -EINVAL;
  	}
  
  	/* sample size */
  	old_format = twl4030_read(codec, TWL4030_REG_AUDIO_IF);
  	format = old_format;
  	format &= ~TWL4030_DATA_WIDTH;
  	switch (params_format(params)) {
  	case SNDRV_PCM_FORMAT_S16_LE:
  		format |= TWL4030_DATA_WIDTH_16S_16W;
  		break;
  	case SNDRV_PCM_FORMAT_S32_LE:
  		format |= TWL4030_DATA_WIDTH_32S_24W;
  		break;
  	default:
  		dev_err(codec->dev, "%s: unknown format %d
  ", __func__,
  			params_format(params));
  		return -EINVAL;
  	}
  
  	if (format != old_format || mode != old_mode) {
  		if (twl4030->codec_powered) {
  			/*
  			 * If the codec is powered, than we need to toggle the
  			 * codec power.
  			 */
  			twl4030_codec_enable(codec, 0);
  			twl4030_write(codec, TWL4030_REG_CODEC_MODE, mode);
  			twl4030_write(codec, TWL4030_REG_AUDIO_IF, format);
  			twl4030_codec_enable(codec, 1);
  		} else {
  			twl4030_write(codec, TWL4030_REG_CODEC_MODE, mode);
  			twl4030_write(codec, TWL4030_REG_AUDIO_IF, format);
  		}
  	}
  
  	/* Store the important parameters for the DAI configuration and set
  	 * the DAI as configured */
  	twl4030->configured = 1;
  	twl4030->rate = params_rate(params);
  	twl4030->sample_bits = hw_param_interval(params,
  					SNDRV_PCM_HW_PARAM_SAMPLE_BITS)->min;
  	twl4030->channels = params_channels(params);
  
  	/* If both playback and capture streams are open, and one of them
  	 * is setting the hw parameters right now (since we are here), set
  	 * constraints to the other stream to match the current one. */
  	if (twl4030->slave_substream)
  		twl4030_constraints(twl4030, substream);
  
  	return 0;
  }
  
  static int twl4030_set_dai_sysclk(struct snd_soc_dai *codec_dai, int clk_id,
  				  unsigned int freq, int dir)
  {
  	struct snd_soc_codec *codec = codec_dai->codec;
  	struct twl4030_priv *twl4030 = snd_soc_codec_get_drvdata(codec);
  
  	switch (freq) {
  	case 19200000:
  	case 26000000:
  	case 38400000:
  		break;
  	default:
  		dev_err(codec->dev, "Unsupported HFCLKIN: %u
  ", freq);
  		return -EINVAL;
  	}
  
  	if ((freq / 1000) != twl4030->sysclk) {
  		dev_err(codec->dev,
  			"Mismatch in HFCLKIN: %u (configured: %u)
  ",
  			freq, twl4030->sysclk * 1000);
  		return -EINVAL;
  	}
  
  	return 0;
  }
  
  static int twl4030_set_dai_fmt(struct snd_soc_dai *codec_dai, unsigned int fmt)
  {
  	struct snd_soc_codec *codec = codec_dai->codec;
  	struct twl4030_priv *twl4030 = snd_soc_codec_get_drvdata(codec);
  	u8 old_format, format;
  
  	/* get format */
  	old_format = twl4030_read(codec, TWL4030_REG_AUDIO_IF);
  	format = old_format;
  
  	/* set master/slave audio interface */
  	switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
  	case SND_SOC_DAIFMT_CBM_CFM:
  		format &= ~(TWL4030_AIF_SLAVE_EN);
  		format &= ~(TWL4030_CLK256FS_EN);
  		break;
  	case SND_SOC_DAIFMT_CBS_CFS:
  		format |= TWL4030_AIF_SLAVE_EN;
  		format |= TWL4030_CLK256FS_EN;
  		break;
  	default:
  		return -EINVAL;
  	}
  
  	/* interface format */
  	format &= ~TWL4030_AIF_FORMAT;
  	switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
  	case SND_SOC_DAIFMT_I2S:
  		format |= TWL4030_AIF_FORMAT_CODEC;
  		break;
  	case SND_SOC_DAIFMT_DSP_A:
  		format |= TWL4030_AIF_FORMAT_TDM;
  		break;
  	default:
  		return -EINVAL;
  	}
  
  	if (format != old_format) {
  		if (twl4030->codec_powered) {
  			/*
  			 * If the codec is powered, than we need to toggle the
  			 * codec power.
  			 */
  			twl4030_codec_enable(codec, 0);
  			twl4030_write(codec, TWL4030_REG_AUDIO_IF, format);
  			twl4030_codec_enable(codec, 1);
  		} else {
  			twl4030_write(codec, TWL4030_REG_AUDIO_IF, format);
  		}
  	}
  
  	return 0;
  }
  
  static int twl4030_set_tristate(struct snd_soc_dai *dai, int tristate)
  {
  	struct snd_soc_codec *codec = dai->codec;
  	u8 reg = twl4030_read(codec, TWL4030_REG_AUDIO_IF);
  
  	if (tristate)
  		reg |= TWL4030_AIF_TRI_EN;
  	else
  		reg &= ~TWL4030_AIF_TRI_EN;
  
  	return twl4030_write(codec, TWL4030_REG_AUDIO_IF, reg);
  }
  
  /* In case of voice mode, the RX1 L(VRX) for downlink and the TX2 L/R
   * (VTXL, VTXR) for uplink has to be enabled/disabled. */
  static void twl4030_voice_enable(struct snd_soc_codec *codec, int direction,
  				 int enable)
  {
  	u8 reg, mask;
  
  	reg = twl4030_read(codec, TWL4030_REG_OPTION);
  
  	if (direction == SNDRV_PCM_STREAM_PLAYBACK)
  		mask = TWL4030_ARXL1_VRX_EN;
  	else
  		mask = TWL4030_ATXL2_VTXL_EN | TWL4030_ATXR2_VTXR_EN;
  
  	if (enable)
  		reg |= mask;
  	else
  		reg &= ~mask;
  
  	twl4030_write(codec, TWL4030_REG_OPTION, reg);
  }
  
  static int twl4030_voice_startup(struct snd_pcm_substream *substream,
  				 struct snd_soc_dai *dai)
  {
  	struct snd_soc_codec *codec = dai->codec;
  	struct twl4030_priv *twl4030 = snd_soc_codec_get_drvdata(codec);
  	u8 mode;
  
  	/* If the system master clock is not 26MHz, the voice PCM interface is
  	 * not available.
  	 */
  	if (twl4030->sysclk != 26000) {
  		dev_err(codec->dev,
  			"%s: HFCLKIN is %u KHz, voice interface needs 26MHz
  ",
  			__func__, twl4030->sysclk);
  		return -EINVAL;
  	}
  
  	/* If the codec mode is not option2, the voice PCM interface is not
  	 * available.
  	 */
  	mode = twl4030_read(codec, TWL4030_REG_CODEC_MODE)
  		& TWL4030_OPT_MODE;
  
  	if (mode != TWL4030_OPTION_2) {
  		dev_err(codec->dev, "%s: the codec mode is not option2
  ",
  			__func__);
  		return -EINVAL;
  	}
  
  	return 0;
  }
  
  static void twl4030_voice_shutdown(struct snd_pcm_substream *substream,
  				   struct snd_soc_dai *dai)
  {
  	struct snd_soc_codec *codec = dai->codec;
  
  	/* Enable voice digital filters */
  	twl4030_voice_enable(codec, substream->stream, 0);
  }
  
  static int twl4030_voice_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 twl4030_priv *twl4030 = snd_soc_codec_get_drvdata(codec);
  	u8 old_mode, mode;
  
  	/* Enable voice digital filters */
  	twl4030_voice_enable(codec, substream->stream, 1);
  
  	/* bit rate */
  	old_mode = twl4030_read(codec,
  				TWL4030_REG_CODEC_MODE) & ~TWL4030_CODECPDZ;
  	mode = old_mode;
  
  	switch (params_rate(params)) {
  	case 8000:
  		mode &= ~(TWL4030_SEL_16K);
  		break;
  	case 16000:
  		mode |= TWL4030_SEL_16K;
  		break;
  	default:
  		dev_err(codec->dev, "%s: unknown rate %d
  ", __func__,
  			params_rate(params));
  		return -EINVAL;
  	}
  
  	if (mode != old_mode) {
  		if (twl4030->codec_powered) {
  			/*
  			 * If the codec is powered, than we need to toggle the
  			 * codec power.
  			 */
  			twl4030_codec_enable(codec, 0);
  			twl4030_write(codec, TWL4030_REG_CODEC_MODE, mode);
  			twl4030_codec_enable(codec, 1);
  		} else {
  			twl4030_write(codec, TWL4030_REG_CODEC_MODE, mode);
  		}
  	}
  
  	return 0;
  }
  
  static int twl4030_voice_set_dai_sysclk(struct snd_soc_dai *codec_dai,
  					int clk_id, unsigned int freq, int dir)
  {
  	struct snd_soc_codec *codec = codec_dai->codec;
  	struct twl4030_priv *twl4030 = snd_soc_codec_get_drvdata(codec);
  
  	if (freq != 26000000) {
  		dev_err(codec->dev,
  			"%s: HFCLKIN is %u KHz, voice interface needs 26MHz
  ",
  			__func__, freq / 1000);
  		return -EINVAL;
  	}
  	if ((freq / 1000) != twl4030->sysclk) {
  		dev_err(codec->dev,
  			"Mismatch in HFCLKIN: %u (configured: %u)
  ",
  			freq, twl4030->sysclk * 1000);
  		return -EINVAL;
  	}
  	return 0;
  }
  
  static int twl4030_voice_set_dai_fmt(struct snd_soc_dai *codec_dai,
  				     unsigned int fmt)
  {
  	struct snd_soc_codec *codec = codec_dai->codec;
  	struct twl4030_priv *twl4030 = snd_soc_codec_get_drvdata(codec);
  	u8 old_format, format;
  
  	/* get format */
  	old_format = twl4030_read(codec, TWL4030_REG_VOICE_IF);
  	format = old_format;
  
  	/* set master/slave audio interface */
  	switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
  	case SND_SOC_DAIFMT_CBM_CFM:
  		format &= ~(TWL4030_VIF_SLAVE_EN);
  		break;
  	case SND_SOC_DAIFMT_CBS_CFS:
  		format |= TWL4030_VIF_SLAVE_EN;
  		break;
  	default:
  		return -EINVAL;
  	}
  
  	/* clock inversion */
  	switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
  	case SND_SOC_DAIFMT_IB_NF:
  		format &= ~(TWL4030_VIF_FORMAT);
  		break;
  	case SND_SOC_DAIFMT_NB_IF:
  		format |= TWL4030_VIF_FORMAT;
  		break;
  	default:
  		return -EINVAL;
  	}
  
  	if (format != old_format) {
  		if (twl4030->codec_powered) {
  			/*
  			 * If the codec is powered, than we need to toggle the
  			 * codec power.
  			 */
  			twl4030_codec_enable(codec, 0);
  			twl4030_write(codec, TWL4030_REG_VOICE_IF, format);
  			twl4030_codec_enable(codec, 1);
  		} else {
  			twl4030_write(codec, TWL4030_REG_VOICE_IF, format);
  		}
  	}
  
  	return 0;
  }
  
  static int twl4030_voice_set_tristate(struct snd_soc_dai *dai, int tristate)
  {
  	struct snd_soc_codec *codec = dai->codec;
  	u8 reg = twl4030_read(codec, TWL4030_REG_VOICE_IF);
  
  	if (tristate)
  		reg |= TWL4030_VIF_TRI_EN;
  	else
  		reg &= ~TWL4030_VIF_TRI_EN;
  
  	return twl4030_write(codec, TWL4030_REG_VOICE_IF, reg);
  }
  
  #define TWL4030_RATES	 (SNDRV_PCM_RATE_8000_48000)
  #define TWL4030_FORMATS	 (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S32_LE)
  
  static const struct snd_soc_dai_ops twl4030_dai_hifi_ops = {
  	.startup	= twl4030_startup,
  	.shutdown	= twl4030_shutdown,
  	.hw_params	= twl4030_hw_params,
  	.set_sysclk	= twl4030_set_dai_sysclk,
  	.set_fmt	= twl4030_set_dai_fmt,
  	.set_tristate	= twl4030_set_tristate,
  };
  
  static const struct snd_soc_dai_ops twl4030_dai_voice_ops = {
  	.startup	= twl4030_voice_startup,
  	.shutdown	= twl4030_voice_shutdown,
  	.hw_params	= twl4030_voice_hw_params,
  	.set_sysclk	= twl4030_voice_set_dai_sysclk,
  	.set_fmt	= twl4030_voice_set_dai_fmt,
  	.set_tristate	= twl4030_voice_set_tristate,
  };
  
  static struct snd_soc_dai_driver twl4030_dai[] = {
  {
  	.name = "twl4030-hifi",
  	.playback = {
  		.stream_name = "HiFi Playback",
  		.channels_min = 2,
  		.channels_max = 4,
  		.rates = TWL4030_RATES | SNDRV_PCM_RATE_96000,
  		.formats = TWL4030_FORMATS,
  		.sig_bits = 24,},
  	.capture = {
  		.stream_name = "HiFi Capture",
  		.channels_min = 2,
  		.channels_max = 4,
  		.rates = TWL4030_RATES,
  		.formats = TWL4030_FORMATS,
  		.sig_bits = 24,},
  	.ops = &twl4030_dai_hifi_ops,
  },
  {
  	.name = "twl4030-voice",
  	.playback = {
  		.stream_name = "Voice Playback",
  		.channels_min = 1,
  		.channels_max = 1,
  		.rates = SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_16000,
  		.formats = SNDRV_PCM_FMTBIT_S16_LE,},
  	.capture = {
  		.stream_name = "Voice Capture",
  		.channels_min = 1,
  		.channels_max = 2,
  		.rates = SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_16000,
  		.formats = SNDRV_PCM_FMTBIT_S16_LE,},
  	.ops = &twl4030_dai_voice_ops,
  },
  };
  
  static int twl4030_soc_probe(struct snd_soc_codec *codec)
  {
  	struct twl4030_priv *twl4030;
  
  	twl4030 = devm_kzalloc(codec->dev, sizeof(struct twl4030_priv),
  			       GFP_KERNEL);
  	if (twl4030 == NULL) {
  		dev_err(codec->dev, "Can not allocate memory
  ");
  		return -ENOMEM;
  	}
  	snd_soc_codec_set_drvdata(codec, twl4030);
  	/* Set the defaults, and power up the codec */
  	twl4030->sysclk = twl4030_audio_get_mclk() / 1000;
  
  	twl4030_init_chip(codec);
  
  	return 0;
  }
  
  static int twl4030_soc_remove(struct snd_soc_codec *codec)
  {
  	struct twl4030_priv *twl4030 = snd_soc_codec_get_drvdata(codec);
  	struct twl4030_codec_data *pdata = twl4030->pdata;
  
  	twl4030_set_bias_level(codec, SND_SOC_BIAS_OFF);
  
  	if (pdata && pdata->hs_extmute && gpio_is_valid(pdata->hs_extmute_gpio))
  		gpio_free(pdata->hs_extmute_gpio);
  
  	return 0;
  }
  
  static struct snd_soc_codec_driver soc_codec_dev_twl4030 = {
  	.probe = twl4030_soc_probe,
  	.remove = twl4030_soc_remove,
  	.read = twl4030_read,
  	.write = twl4030_write,
  	.set_bias_level = twl4030_set_bias_level,
  	.idle_bias_off = true,
  
  	.controls = twl4030_snd_controls,
  	.num_controls = ARRAY_SIZE(twl4030_snd_controls),
  	.dapm_widgets = twl4030_dapm_widgets,
  	.num_dapm_widgets = ARRAY_SIZE(twl4030_dapm_widgets),
  	.dapm_routes = intercon,
  	.num_dapm_routes = ARRAY_SIZE(intercon),
  };
  
  static int twl4030_codec_probe(struct platform_device *pdev)
  {
  	return snd_soc_register_codec(&pdev->dev, &soc_codec_dev_twl4030,
  				      twl4030_dai, ARRAY_SIZE(twl4030_dai));
  }
  
  static int twl4030_codec_remove(struct platform_device *pdev)
  {
  	snd_soc_unregister_codec(&pdev->dev);
  	return 0;
  }
  
  MODULE_ALIAS("platform:twl4030-codec");
  
  static struct platform_driver twl4030_codec_driver = {
  	.probe		= twl4030_codec_probe,
  	.remove		= twl4030_codec_remove,
  	.driver		= {
  		.name	= "twl4030-codec",
  		.owner	= THIS_MODULE,
  	},
  };
  
  module_platform_driver(twl4030_codec_driver);
  
  MODULE_DESCRIPTION("ASoC TWL4030 codec driver");
  MODULE_AUTHOR("Steve Sakoman");
  MODULE_LICENSE("GPL");