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twl4030.c

/*
 * 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/i2c/twl4030.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
#include <sound/soc.h>
#include <sound/soc-dapm.h>
#include <sound/initval.h>
#include <sound/tlv.h>

#include "twl4030.h"

/*
 * twl4030 register cache & default register settings
 */
static const u8 twl4030_reg[TWL4030_CACHEREGNUM] = {
      0x00, /* this register not used           */
      0x91, /* REG_CODEC_MODE       (0x1) */
      0xc3, /* REG_OPTION           (0x2) */
      0x00, /* REG_UNKNOWN          (0x3) */
      0x00, /* REG_MICBIAS_CTL      (0x4) */
      0x20, /* REG_ANAMICL          (0x5) */
      0x00, /* REG_ANAMICR          (0x6) */
      0x00, /* REG_AVADC_CTL        (0x7) */
      0x00, /* REG_ADCMICSEL        (0x8) */
      0x00, /* REG_DIGMIXING        (0x9) */
      0x0c, /* REG_ATXL1PGA         (0xA) */
      0x0c, /* REG_ATXR1PGA         (0xB) */
      0x00, /* REG_AVTXL2PGA        (0xC) */
      0x00, /* REG_AVTXR2PGA        (0xD) */
      0x01, /* REG_AUDIO_IF         (0xE) */
      0x00, /* REG_VOICE_IF         (0xF) */
      0x00, /* REG_ARXR1PGA         (0x10)      */
      0x00, /* REG_ARXL1PGA         (0x11)      */
      0x6c, /* REG_ARXR2PGA         (0x12)      */
      0x6c, /* REG_ARXL2PGA         (0x13)      */
      0x00, /* REG_VRXPGA           (0x14)      */
      0x00, /* REG_VSTPGA           (0x15)      */
      0x00, /* REG_VRX2ARXPGA       (0x16)      */
      0x0c, /* REG_AVDAC_CTL        (0x17)      */
      0x00, /* REG_ARX2VTXPGA       (0x18)      */
      0x00, /* REG_ARXL1_APGA_CTL   (0x19)      */
      0x00, /* REG_ARXR1_APGA_CTL   (0x1A)      */
      0x4b, /* REG_ARXL2_APGA_CTL   (0x1B)      */
      0x4b, /* REG_ARXR2_APGA_CTL   (0x1C)      */
      0x00, /* REG_ATX2ARXPGA       (0x1D)      */
      0x00, /* REG_BT_IF            (0x1E)      */
      0x00, /* REG_BTPGA            (0x1F)      */
      0x00, /* REG_BTSTPGA          (0x20)      */
      0x00, /* REG_EAR_CTL          (0x21)      */
      0x24, /* REG_HS_SEL           (0x22)      */
      0x0a, /* REG_HS_GAIN_SET      (0x23)      */
      0x00, /* REG_HS_POPN_SET      (0x24)      */
      0x00, /* REG_PREDL_CTL        (0x25)      */
      0x00, /* REG_PREDR_CTL        (0x26)      */
      0x00, /* REG_PRECKL_CTL       (0x27)      */
      0x00, /* REG_PRECKR_CTL       (0x28)      */
      0x00, /* REG_HFL_CTL          (0x29)      */
      0x00, /* REG_HFR_CTL          (0x2A)      */
      0x00, /* REG_ALC_CTL          (0x2B)      */
      0x00, /* REG_ALC_SET1         (0x2C)      */
      0x00, /* REG_ALC_SET2         (0x2D)      */
      0x00, /* REG_BOOST_CTL        (0x2E)      */
      0x00, /* REG_SOFTVOL_CTL      (0x2F)      */
      0x00, /* REG_DTMF_FREQSEL     (0x30)      */
      0x00, /* REG_DTMF_TONEXT1H    (0x31)      */
      0x00, /* REG_DTMF_TONEXT1L    (0x32)      */
      0x00, /* REG_DTMF_TONEXT2H    (0x33)      */
      0x00, /* REG_DTMF_TONEXT2L    (0x34)      */
      0x00, /* REG_DTMF_TONOFF      (0x35)      */
      0x00, /* REG_DTMF_WANONOFF    (0x36)      */
      0x00, /* REG_I2S_RX_SCRAMBLE_H      (0x37)      */
      0x00, /* REG_I2S_RX_SCRAMBLE_M      (0x38)      */
      0x00, /* REG_I2S_RX_SCRAMBLE_L      (0x39)      */
      0x16, /* REG_APLL_CTL         (0x3A)      */
      0x00, /* REG_DTMF_CTL         (0x3B)      */
      0x00, /* REG_DTMF_PGA_CTL2    (0x3C)      */
      0x00, /* REG_DTMF_PGA_CTL1    (0x3D)      */
      0x00, /* REG_MISC_SET_1       (0x3E)      */
      0x00, /* REG_PCMBTMUX         (0x3F)      */
      0x00, /* not used       (0x40)      */
      0x00, /* not used       (0x41)      */
      0x00, /* not used       (0x42)      */
      0x00, /* REG_RX_PATH_SEL      (0x43)      */
      0x00, /* REG_VDL_APGA_CTL     (0x44)      */
      0x00, /* REG_VIBRA_CTL        (0x45)      */
      0x00, /* REG_VIBRA_SET        (0x46)      */
      0x00, /* REG_VIBRA_PWM_SET    (0x47)      */
      0x00, /* REG_ANAMIC_GAIN      (0x48)      */
      0x00, /* REG_MISC_SET_2       (0x49)      */
      0x00, /* REG_SW_SHADOW        (0x4A)      - Shadow, non HW register */
};

/* codec private data */
struct twl4030_priv {
      unsigned int bypass_state;
      unsigned int codec_powered;
      unsigned int codec_muted;

      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;

      /* Headset output state handling */
      unsigned int hsl_enabled;
      unsigned int hsr_enabled;
};

/*
 * read twl4030 register cache
 */
static inline unsigned int twl4030_read_reg_cache(struct snd_soc_codec *codec,
      unsigned int reg)
{
      u8 *cache = codec->reg_cache;

      if (reg >= TWL4030_CACHEREGNUM)
            return -EIO;

      return cache[reg];
}

/*
 * write twl4030 register cache
 */
static inline void twl4030_write_reg_cache(struct snd_soc_codec *codec,
                                    u8 reg, u8 value)
{
      u8 *cache = codec->reg_cache;

      if (reg >= TWL4030_CACHEREGNUM)
            return;
      cache[reg] = value;
}

/*
 * write to the twl4030 register space
 */
static int twl4030_write(struct snd_soc_codec *codec,
                  unsigned int reg, unsigned int value)
{
      twl4030_write_reg_cache(codec, reg, value);
      if (likely(reg < TWL4030_REG_SW_SHADOW))
            return twl4030_i2c_write_u8(TWL4030_MODULE_AUDIO_VOICE, value,
                                  reg);
      else
            return 0;
}

static void twl4030_codec_enable(struct snd_soc_codec *codec, int enable)
{
      struct twl4030_priv *twl4030 = codec->private_data;
      u8 mode;

      if (enable == twl4030->codec_powered)
            return;

      mode = twl4030_read_reg_cache(codec, TWL4030_REG_CODEC_MODE);
      if (enable)
            mode |= TWL4030_CODECPDZ;
      else
            mode &= ~TWL4030_CODECPDZ;

      twl4030_write(codec, TWL4030_REG_CODEC_MODE, mode);
      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_init_chip(struct snd_soc_codec *codec)
{
      u8 *cache = codec->reg_cache;
      int i;

      /* clear CODECPDZ prior to setting register defaults */
      twl4030_codec_enable(codec, 0);

      /* set all audio section registers to reasonable defaults */
      for (i = TWL4030_REG_OPTION; i <= TWL4030_REG_MISC_SET_2; i++)
            twl4030_write(codec, i, cache[i]);

}

static void twl4030_codec_mute(struct snd_soc_codec *codec, int mute)
{
      struct twl4030_priv *twl4030 = codec->private_data;
      u8 reg_val;

      if (mute == twl4030->codec_muted)
            return;

      if (mute) {
            /* Disable PLL */
            reg_val = twl4030_read_reg_cache(codec, TWL4030_REG_APLL_CTL);
            reg_val &= ~TWL4030_APLL_EN;
            twl4030_write(codec, TWL4030_REG_APLL_CTL, reg_val);
      } else {
            /* Enable PLL */
            reg_val = twl4030_read_reg_cache(codec, TWL4030_REG_APLL_CTL);
            reg_val |= TWL4030_APLL_EN;
            twl4030_write(codec, TWL4030_REG_APLL_CTL, reg_val);
      }

      twl4030->codec_muted = mute;
}

static void twl4030_power_up(struct snd_soc_codec *codec)
{
      struct twl4030_priv *twl4030 = codec->private_data;
      u8 anamicl, regmisc1, byte;
      int i = 0;

      if (twl4030->codec_powered)
            return;

      /* set CODECPDZ to turn on codec */
      twl4030_codec_enable(codec, 1);

      /* initiate offset cancellation */
      anamicl = twl4030_read_reg_cache(codec, TWL4030_REG_ANAMICL);
      twl4030_write(codec, TWL4030_REG_ANAMICL,
            anamicl | TWL4030_CNCL_OFFSET_START);

      /* wait for offset cancellation to complete */
      do {
            /* this takes a little while, so don't slam i2c */
            udelay(2000);
            twl4030_i2c_read_u8(TWL4030_MODULE_AUDIO_VOICE, &byte,
                            TWL4030_REG_ANAMICL);
      } while ((i++ < 100) &&
             ((byte & TWL4030_CNCL_OFFSET_START) ==
              TWL4030_CNCL_OFFSET_START));

      /* Make sure that the reg_cache has the same value as the HW */
      twl4030_write_reg_cache(codec, TWL4030_REG_ANAMICL, byte);

      /* anti-pop when changing analog gain */
      regmisc1 = twl4030_read_reg_cache(codec, TWL4030_REG_MISC_SET_1);
      twl4030_write(codec, TWL4030_REG_MISC_SET_1,
            regmisc1 | TWL4030_SMOOTH_ANAVOL_EN);

      /* toggle CODECPDZ as per TRM */
      twl4030_codec_enable(codec, 0);
      twl4030_codec_enable(codec, 1);
}

/*
 * Unconditional power down
 */
static void twl4030_power_down(struct snd_soc_codec *codec)
{
      /* power down */
      twl4030_codec_enable(codec, 0);
}

/* 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("Switch", TWL4030_REG_SW_SHADOW, 0, 1, 0);

/* 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("Switch", TWL4030_REG_SW_SHADOW, 1, 1, 0);

/* 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, 0 mutes the bypass */
static const unsigned int twl4030_dapm_dbypass_tlv[] = {
      TLV_DB_RANGE_HEAD(2),
      0, 3, TLV_DB_SCALE_ITEM(-2400, 0, 1),
      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);

static int micpath_event(struct snd_soc_dapm_widget *w,
      struct snd_kcontrol *kcontrol, int event)
{
      struct soc_enum *e = (struct soc_enum *)w->kcontrols->private_value;
      unsigned char adcmicsel, micbias_ctl;

      adcmicsel = twl4030_read_reg_cache(w->codec, TWL4030_REG_ADCMICSEL);
      micbias_ctl = twl4030_read_reg_cache(w->codec, TWL4030_REG_MICBIAS_CTL);
      /* Prepare the bits for the given TX path:
       * shift_l == 0: TX1 microphone path
       * shift_l == 2: TX2 microphone path */
      if (e->shift_l) {
            /* TX2 microphone path */
            if (adcmicsel & TWL4030_TX2IN_SEL)
                  micbias_ctl |= TWL4030_MICBIAS2_CTL; /* digimic */
            else
                  micbias_ctl &= ~TWL4030_MICBIAS2_CTL;
      } else {
            /* TX1 microphone path */
            if (adcmicsel & TWL4030_TX1IN_SEL)
                  micbias_ctl |= TWL4030_MICBIAS1_CTL; /* digimic */
            else
                  micbias_ctl &= ~TWL4030_MICBIAS1_CTL;
      }

      twl4030_write(w->codec, TWL4030_REG_MICBIAS_CTL, micbias_ctl);

      return 0;
}

/*
 * 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 mute the volume
 * On unmute: restore the register content
 * 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)       \
{                                                     \
      u8 reg_val;                                     \
                                                      \
      switch (event) {                                \
      case SND_SOC_DAPM_POST_PMU:                           \
            twl4030_write(w->codec, reg,                    \
                  twl4030_read_reg_cache(w->codec, reg));         \
            break;                                          \
      case SND_SOC_DAPM_POST_PMD:                           \
            reg_val = twl4030_read_reg_cache(w->codec, reg);      \
            twl4030_i2c_write_u8(TWL4030_MODULE_AUDIO_VOICE,      \
                              reg_val & (~mask),            \
                              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_reg_cache(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 void headset_ramp(struct snd_soc_codec *codec, int ramp)
{
      struct snd_soc_device *socdev = codec->socdev;
      struct twl4030_setup_data *setup = socdev->codec_data;

      unsigned char hs_gain, hs_pop;
      struct twl4030_priv *twl4030 = codec->private_data;
      /* Base values for ramp delay calculation: 2^19 - 2^26 */
      unsigned int ramp_base[] = {524288, 1048576, 2097152, 4194304,
                            8388608, 16777216, 33554432, 67108864};

      hs_gain = twl4030_read_reg_cache(codec, TWL4030_REG_HS_GAIN_SET);
      hs_pop = twl4030_read_reg_cache(codec, TWL4030_REG_HS_POPN_SET);

      /* Enable external mute control, this dramatically reduces
       * the pop-noise */
      if (setup && setup->hs_extmute) {
            if (setup->set_hs_extmute) {
                  setup->set_hs_extmute(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);
            twl4030_write(codec, TWL4030_REG_HS_GAIN_SET, hs_gain);
            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 */
            mdelay((ramp_base[(hs_pop & TWL4030_RAMP_DELAY) >> 2] /
                  twl4030->sysclk) + 1);
      } 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 */
            mdelay((ramp_base[(hs_pop & TWL4030_RAMP_DELAY) >> 2] /
                  twl4030->sysclk) + 1);
            /* Bypass the reg_cache to mute the headset */
            twl4030_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 (setup && setup->hs_extmute) {
            if (setup->set_hs_extmute) {
                  setup->set_hs_extmute(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 = w->codec->private_data;

      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 = w->codec->private_data;

      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 bypass_event(struct snd_soc_dapm_widget *w,
            struct snd_kcontrol *kcontrol, int event)
{
      struct soc_mixer_control *m =
            (struct soc_mixer_control *)w->kcontrols->private_value;
      struct twl4030_priv *twl4030 = w->codec->private_data;
      unsigned char reg, misc;

      reg = twl4030_read_reg_cache(w->codec, m->reg);

      /*
       * bypass_state[0:3] - analog HiFi bypass
       * bypass_state[4]   - analog voice bypass
       * bypass_state[5]   - digital voice bypass
       * bypass_state[6:7] - digital HiFi bypass
       */
      if (m->reg == TWL4030_REG_VSTPGA) {
            /* Voice digital bypass */
            if (reg)
                  twl4030->bypass_state |= (1 << 5);
            else
                  twl4030->bypass_state &= ~(1 << 5);
      } else if (m->reg <= TWL4030_REG_ARXR2_APGA_CTL) {
            /* Analog bypass */
            if (reg & (1 << m->shift))
                  twl4030->bypass_state |=
                        (1 << (m->reg - TWL4030_REG_ARXL1_APGA_CTL));
            else
                  twl4030->bypass_state &=
                        ~(1 << (m->reg - TWL4030_REG_ARXL1_APGA_CTL));
      } else if (m->reg == TWL4030_REG_VDL_APGA_CTL) {
            /* Analog voice bypass */
            if (reg & (1 << m->shift))
                  twl4030->bypass_state |= (1 << 4);
            else
                  twl4030->bypass_state &= ~(1 << 4);
      } else {
            /* Digital bypass */
            if (reg & (0x7 << m->shift))
                  twl4030->bypass_state |= (1 << (m->shift ? 7 : 6));
            else
                  twl4030->bypass_state &= ~(1 << (m->shift ? 7 : 6));
      }

      /* Enable master analog loopback mode if any analog switch is enabled*/
      misc = twl4030_read_reg_cache(w->codec, TWL4030_REG_MISC_SET_1);
      if (twl4030->bypass_state & 0x1F)
            misc |= TWL4030_FMLOOP_EN;
      else
            misc &= ~TWL4030_FMLOOP_EN;
      twl4030_write(w->codec, TWL4030_REG_MISC_SET_1, misc);

      if (w->codec->bias_level == SND_SOC_BIAS_STANDBY) {
            if (twl4030->bypass_state)
                  twl4030_codec_mute(w->codec, 0);
            else
                  twl4030_codec_mute(w->codec, 1);
      }
      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.
 */
#define SOC_DOUBLE_TLV_TWL4030(xname, xreg, shift_left, shift_right, xmax,\
                         xinvert, tlv_array) \
{     .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname),\
      .access = SNDRV_CTL_ELEM_ACCESS_TLV_READ |\
             SNDRV_CTL_ELEM_ACCESS_READWRITE,\
      .tlv.p = (tlv_array), \
      .info = snd_soc_info_volsw, \
      .get = snd_soc_get_volsw_twl4030, \
      .put = snd_soc_put_volsw_twl4030, \
      .private_value = (unsigned long)&(struct soc_mixer_control) \
            {.reg = xreg, .shift = shift_left, .rshift = shift_right,\
             .max = xmax, .invert = xinvert} }
#define SOC_DOUBLE_R_TLV_TWL4030(xname, reg_left, reg_right, xshift, xmax,\
                         xinvert, tlv_array) \
{     .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname),\
      .access = SNDRV_CTL_ELEM_ACCESS_TLV_READ |\
             SNDRV_CTL_ELEM_ACCESS_READWRITE,\
      .tlv.p = (tlv_array), \
      .info = snd_soc_info_volsw_2r, \
      .get = snd_soc_get_volsw_r2_twl4030,\
      .put = snd_soc_put_volsw_r2_twl4030, \
      .private_value = (unsigned long)&(struct soc_mixer_control) \
            {.reg = reg_left, .rreg = reg_right, .shift = xshift, \
             .rshift = xshift, .max = xmax, .invert = xinvert} }
#define SOC_SINGLE_TLV_TWL4030(xname, xreg, xshift, xmax, xinvert, tlv_array) \
      SOC_DOUBLE_TLV_TWL4030(xname, xreg, xshift, xshift, xmax, \
                         xinvert, tlv_array)

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 = codec->private_data;
      struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
      unsigned short val;
      unsigned short mask, bitmask;

      if (twl4030->configured) {
            printk(KERN_ERR "twl4030 operation mode cannot be "
                  "changed on-the-fly\n");
            return -EBUSY;
      }

      for (bitmask = 1; bitmask < e->max; bitmask <<= 1)
            ;
      if (ucontrol->value.enumerated.item[0] > e->max - 1)
            return -EINVAL;

      val = ucontrol->value.enumerated.item[0] << e->shift_l;
      mask = (bitmask - 1) << 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 |= (bitmask - 1) << 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);

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_TLV_TWL4030("PreDriv Playback Volume",
            TWL4030_REG_PREDL_CTL, TWL4030_REG_PREDR_CTL,
            4, 3, 0, output_tvl),

      SOC_DOUBLE_TLV_TWL4030("Headset Playback Volume",
            TWL4030_REG_HS_GAIN_SET, 0, 2, 3, 0, output_tvl),

      SOC_DOUBLE_R_TLV_TWL4030("Carkit Playback Volume",
            TWL4030_REG_PRECKL_CTL, TWL4030_REG_PRECKR_CTL,
            4, 3, 0, output_tvl),

      SOC_SINGLE_TLV_TWL4030("Earpiece Playback Volume",
            TWL4030_REG_EAR_CTL, 4, 3, 0, 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),
};

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("OUTL"),
      SND_SOC_DAPM_OUTPUT("OUTR"),
      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"),

      /* DACs */
      SND_SOC_DAPM_DAC("DAC Right1", "Right Front HiFi Playback",
                  SND_SOC_NOPM, 0, 0),
      SND_SOC_DAPM_DAC("DAC Left1", "Left Front HiFi Playback",
                  SND_SOC_NOPM, 0, 0),
      SND_SOC_DAPM_DAC("DAC Right2", "Right Rear HiFi Playback",
                  SND_SOC_NOPM, 0, 0),
      SND_SOC_DAPM_DAC("DAC Left2", "Left Rear HiFi Playback",
                  SND_SOC_NOPM, 0, 0),
      SND_SOC_DAPM_DAC("DAC Voice", "Voice Playback",
                  SND_SOC_NOPM, 0, 0),

      /* Analog bypasses */
      SND_SOC_DAPM_SWITCH_E("Right1 Analog Loopback", SND_SOC_NOPM, 0, 0,
                  &twl4030_dapm_abypassr1_control, bypass_event,
                  SND_SOC_DAPM_POST_REG),
      SND_SOC_DAPM_SWITCH_E("Left1 Analog Loopback", SND_SOC_NOPM, 0, 0,
                  &twl4030_dapm_abypassl1_control,
                  bypass_event, SND_SOC_DAPM_POST_REG),
      SND_SOC_DAPM_SWITCH_E("Right2 Analog Loopback", SND_SOC_NOPM, 0, 0,
                  &twl4030_dapm_abypassr2_control,
                  bypass_event, SND_SOC_DAPM_POST_REG),
      SND_SOC_DAPM_SWITCH_E("Left2 Analog Loopback", SND_SOC_NOPM, 0, 0,
                  &twl4030_dapm_abypassl2_control,
                  bypass_event, SND_SOC_DAPM_POST_REG),
      SND_SOC_DAPM_SWITCH_E("Voice Analog Loopback", SND_SOC_NOPM, 0, 0,
                  &twl4030_dapm_abypassv_control,
                  bypass_event, SND_SOC_DAPM_POST_REG),

      /* Digital bypasses */
      SND_SOC_DAPM_SWITCH_E("Left Digital Loopback", SND_SOC_NOPM, 0, 0,
                  &twl4030_dapm_dbypassl_control, bypass_event,
                  SND_SOC_DAPM_POST_REG),
      SND_SOC_DAPM_SWITCH_E("Right Digital Loopback", SND_SOC_NOPM, 0, 0,
                  &twl4030_dapm_dbypassr_control, bypass_event,
                  SND_SOC_DAPM_POST_REG),
      SND_SOC_DAPM_SWITCH_E("Voice Digital Loopback", SND_SOC_NOPM, 0, 0,
                  &twl4030_dapm_dbypassv_control, bypass_event,
                  SND_SOC_DAPM_POST_REG),

      /* 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),

      /* 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("Vibra Mux", TWL4030_REG_VIBRA_CTL, 0, 0,
            &twl4030_dapm_vibra_control),
      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", "Left Front Capture",
            SND_SOC_NOPM, 0, 0),
      SND_SOC_DAPM_ADC("ADC Virtual Right1", "Right Front Capture",
            SND_SOC_NOPM, 0, 0),
      SND_SOC_DAPM_ADC("ADC Virtual Left2", "Left Rear Capture",
            SND_SOC_NOPM, 0, 0),
      SND_SOC_DAPM_ADC("ADC Virtual Right2", "Right Rear Capture",
            SND_SOC_NOPM, 0, 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_E("TX1 Capture Route", SND_SOC_NOPM, 0, 0,
            &twl4030_dapm_micpathtx1_control, micpath_event,
            SND_SOC_DAPM_POST_PMU|SND_SOC_DAPM_POST_PMD|
            SND_SOC_DAPM_POST_REG),
      SND_SOC_DAPM_MUX_E("TX2 Capture Route", SND_SOC_NOPM, 0, 0,
            &twl4030_dapm_micpathtx2_control, micpath_event,
            SND_SOC_DAPM_POST_PMU|SND_SOC_DAPM_POST_PMD|
            SND_SOC_DAPM_POST_REG),

      /* 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("Digimic0 Enable",
            TWL4030_REG_ADCMICSEL, 1, 0, NULL, 0),
      SND_SOC_DAPM_PGA("Digimic1 Enable",
            TWL4030_REG_ADCMICSEL, 3, 0, NULL, 0),

      SND_SOC_DAPM_MICBIAS("Mic Bias 1", TWL4030_REG_MICBIAS_CTL, 0, 0),
      SND_SOC_DAPM_MICBIAS("Mic Bias 2", TWL4030_REG_MICBIAS_CTL, 1, 0),
      SND_SOC_DAPM_MICBIAS("Headset Mic Bias", TWL4030_REG_MICBIAS_CTL, 2, 0),

};

static const struct snd_soc_dapm_route intercon[] = {
      {"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"},

      {"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 */
      {"OUTL", NULL, "Analog L2 Playback Mixer"},
      {"OUTR", NULL, "Analog R2 Playback Mixer"},
      {"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 */
      {"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"},

      /* 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"},

      /* 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"},

      {"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_add_widgets(struct snd_soc_codec *codec)
{
      snd_soc_dapm_new_controls(codec, twl4030_dapm_widgets,
                         ARRAY_SIZE(twl4030_dapm_widgets));

      snd_soc_dapm_add_routes(codec, intercon, ARRAY_SIZE(intercon));

      snd_soc_dapm_new_widgets(codec);
      return 0;
}

static int twl4030_set_bias_level(struct snd_soc_codec *codec,
                          enum snd_soc_bias_level level)
{
      struct twl4030_priv *twl4030 = codec->private_data;

      switch (level) {
      case SND_SOC_BIAS_ON:
            twl4030_codec_mute(codec, 0);
            break;
      case SND_SOC_BIAS_PREPARE:
            twl4030_power_up(codec);
            if (twl4030->bypass_state)
                  twl4030_codec_mute(codec, 0);
            else
                  twl4030_codec_mute(codec, 1);
            break;
      case SND_SOC_BIAS_STANDBY:
            twl4030_power_up(codec);
            if (twl4030->bypass_state)
                  twl4030_codec_mute(codec, 0);
            else
                  twl4030_codec_mute(codec, 1);
            break;
      case SND_SOC_BIAS_OFF:
            twl4030_power_down(codec);
            break;
      }
      codec->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_reg_cache(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_pcm_runtime *rtd = substream->private_data;
      struct snd_soc_device *socdev = rtd->socdev;
      struct snd_soc_codec *codec = socdev->card->codec;
      struct twl4030_priv *twl4030 = codec->private_data;

      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_reg_cache(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_pcm_runtime *rtd = substream->private_data;
      struct snd_soc_device *socdev = rtd->socdev;
      struct snd_soc_codec *codec = socdev->card->codec;
      struct twl4030_priv *twl4030 = codec->private_data;

      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_pcm_runtime *rtd = substream->private_data;
      struct snd_soc_device *socdev = rtd->socdev;
      struct snd_soc_codec *codec = socdev->card->codec;
      struct twl4030_priv *twl4030 = codec->private_data;
      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_reg_cache(codec, TWL4030_REG_AUDIO_IF);
            mode = twl4030_read_reg_cache(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_reg_cache(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:
            printk(KERN_ERR "TWL4030 hw params: unknown rate %d\n",
                  params_rate(params));
            return -EINVAL;
      }

      if (mode != old_mode) {
            /* change rate and set CODECPDZ */
            twl4030_codec_enable(codec, 0);
            twl4030_write(codec, TWL4030_REG_CODEC_MODE, mode);
            twl4030_codec_enable(codec, 1);
      }

      /* sample size */
      old_format = twl4030_read_reg_cache(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_S24_LE:
            format |= TWL4030_DATA_WIDTH_32S_24W;
            break;
      default:
            printk(KERN_ERR "TWL4030 hw params: unknown format %d\n",
                  params_format(params));
            return -EINVAL;
      }

      if (format != old_format) {

            /* clear CODECPDZ before changing format (codec requirement) */
            twl4030_codec_enable(codec, 0);

            /* change format */
            twl4030_write(codec, TWL4030_REG_AUDIO_IF, format);

            /* set CODECPDZ afterwards */
            twl4030_codec_enable(codec, 1);
      }

      /* 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 = codec->private_data;
      u8 infreq;

      switch (freq) {
      case 19200000:
            infreq = TWL4030_APLL_INFREQ_19200KHZ;
            twl4030->sysclk = 19200;
            break;
      case 26000000:
            infreq = TWL4030_APLL_INFREQ_26000KHZ;
            twl4030->sysclk = 26000;
            break;
      case 38400000:
            infreq = TWL4030_APLL_INFREQ_38400KHZ;
            twl4030->sysclk = 38400;
            break;
      default:
            printk(KERN_ERR "TWL4030 set sysclk: unknown rate %d\n",
                  freq);
            return -EINVAL;
      }

      infreq |= TWL4030_APLL_EN;
      twl4030_write(codec, TWL4030_REG_APLL_CTL, infreq);

      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;
      u8 old_format, format;

      /* get format */
      old_format = twl4030_read_reg_cache(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) {

            /* clear CODECPDZ before changing format (codec requirement) */
            twl4030_codec_enable(codec, 0);

            /* change format */
            twl4030_write(codec, TWL4030_REG_AUDIO_IF, format);

            /* set CODECPDZ afterwards */
            twl4030_codec_enable(codec, 1);
      }

      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_reg_cache(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_reg_cache(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_pcm_runtime *rtd = substream->private_data;
      struct snd_soc_device *socdev = rtd->socdev;
      struct snd_soc_codec *codec = socdev->card->codec;
      u8 infreq;
      u8 mode;

      /* If the system master clock is not 26MHz, the voice PCM interface is
       * not avilable.
       */
      infreq = twl4030_read_reg_cache(codec, TWL4030_REG_APLL_CTL)
            & TWL4030_APLL_INFREQ;

      if (infreq != TWL4030_APLL_INFREQ_26000KHZ) {
            printk(KERN_ERR "TWL4030 voice startup: "
                  "MCLK is not 26MHz, call set_sysclk() on init\n");
            return -EINVAL;
      }

      /* If the codec mode is not option2, the voice PCM interface is not
       * avilable.
       */
      mode = twl4030_read_reg_cache(codec, TWL4030_REG_CODEC_MODE)
            & TWL4030_OPT_MODE;

      if (mode != TWL4030_OPTION_2) {
            printk(KERN_ERR "TWL4030 voice startup: "
                  "the codec mode is not option2\n");
            return -EINVAL;
      }

      return 0;
}

static void twl4030_voice_shutdown(struct snd_pcm_substream *substream,
                        struct snd_soc_dai *dai)
{
      struct snd_soc_pcm_runtime *rtd = substream->private_data;
      struct snd_soc_device *socdev = rtd->socdev;
      struct snd_soc_codec *codec = socdev->card->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_pcm_runtime *rtd = substream->private_data;
      struct snd_soc_device *socdev = rtd->socdev;
      struct snd_soc_codec *codec = socdev->card->codec;
      u8 old_mode, mode;

      /* Enable voice digital filters */
      twl4030_voice_enable(codec, substream->stream, 1);

      /* bit rate */
      old_mode = twl4030_read_reg_cache(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:
            printk(KERN_ERR "TWL4030 voice hw params: unknown rate %d\n",
                  params_rate(params));
            return -EINVAL;
      }

      if (mode != old_mode) {
            /* change rate and set CODECPDZ */
            twl4030_codec_enable(codec, 0);
            twl4030_write(codec, TWL4030_REG_CODEC_MODE, mode);
            twl4030_codec_enable(codec, 1);
      }

      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;
      u8 infreq;

      switch (freq) {
      case 26000000:
            infreq = TWL4030_APLL_INFREQ_26000KHZ;
            break;
      default:
            printk(KERN_ERR "TWL4030 voice set sysclk: unknown rate %d\n",
                  freq);
            return -EINVAL;
      }

      infreq |= TWL4030_APLL_EN;
      twl4030_write(codec, TWL4030_REG_APLL_CTL, infreq);

      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;
      u8 old_format, format;

      /* get format */
      old_format = twl4030_read_reg_cache(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) {
            /* change format and set CODECPDZ */
            twl4030_codec_enable(codec, 0);
            twl4030_write(codec, TWL4030_REG_VOICE_IF, format);
            twl4030_codec_enable(codec, 1);
      }

      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_reg_cache(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_FORMAT_S24_LE)

static struct snd_soc_dai_ops twl4030_dai_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 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,
};

struct snd_soc_dai twl4030_dai[] = {
{
      .name = "twl4030",
      .playback = {
            .stream_name = "HiFi Playback",
            .channels_min = 2,
            .channels_max = 4,
            .rates = TWL4030_RATES | SNDRV_PCM_RATE_96000,
            .formats = TWL4030_FORMATS,},
      .capture = {
            .stream_name = "Capture",
            .channels_min = 2,
            .channels_max = 4,
            .rates = TWL4030_RATES,
            .formats = TWL4030_FORMATS,},
      .ops = &twl4030_dai_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 = "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,
},
};
EXPORT_SYMBOL_GPL(twl4030_dai);

static int twl4030_suspend(struct platform_device *pdev, pm_message_t state)
{
      struct snd_soc_device *socdev = platform_get_drvdata(pdev);
      struct snd_soc_codec *codec = socdev->card->codec;

      twl4030_set_bias_level(codec, SND_SOC_BIAS_OFF);

      return 0;
}

static int twl4030_resume(struct platform_device *pdev)
{
      struct snd_soc_device *socdev = platform_get_drvdata(pdev);
      struct snd_soc_codec *codec = socdev->card->codec;

      twl4030_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
      twl4030_set_bias_level(codec, codec->suspend_bias_level);
      return 0;
}

/*
 * initialize the driver
 * register the mixer and dsp interfaces with the kernel
 */

static int twl4030_init(struct snd_soc_device *socdev)
{
      struct snd_soc_codec *codec = socdev->card->codec;
      struct twl4030_setup_data *setup = socdev->codec_data;
      struct twl4030_priv *twl4030 = codec->private_data;
      int ret = 0;

      printk(KERN_INFO "TWL4030 Audio Codec init \n");

      codec->name = "twl4030";
      codec->owner = THIS_MODULE;
      codec->read = twl4030_read_reg_cache;
      codec->write = twl4030_write;
      codec->set_bias_level = twl4030_set_bias_level;
      codec->dai = twl4030_dai;
      codec->num_dai = ARRAY_SIZE(twl4030_dai),
      codec->reg_cache_size = sizeof(twl4030_reg);
      codec->reg_cache = kmemdup(twl4030_reg, sizeof(twl4030_reg),
                              GFP_KERNEL);
      if (codec->reg_cache == NULL)
            return -ENOMEM;

      /* Configuration for headset ramp delay from setup data */
      if (setup) {
            unsigned char hs_pop;

            if (setup->sysclk)
                  twl4030->sysclk = setup->sysclk;
            else
                  twl4030->sysclk = 26000;

            hs_pop = twl4030_read_reg_cache(codec, TWL4030_REG_HS_POPN_SET);
            hs_pop &= ~TWL4030_RAMP_DELAY;
            hs_pop |= (setup->ramp_delay_value << 2);
            twl4030_write_reg_cache(codec, TWL4030_REG_HS_POPN_SET, hs_pop);
      } else {
            twl4030->sysclk = 26000;
      }

      /* register pcms */
      ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1);
      if (ret < 0) {
            printk(KERN_ERR "twl4030: failed to create pcms\n");
            goto pcm_err;
      }

      twl4030_init_chip(codec);

      /* power on device */
      twl4030_set_bias_level(codec, SND_SOC_BIAS_STANDBY);

      snd_soc_add_controls(codec, twl4030_snd_controls,
                        ARRAY_SIZE(twl4030_snd_controls));
      twl4030_add_widgets(codec);

      ret = snd_soc_init_card(socdev);
      if (ret < 0) {
            printk(KERN_ERR "twl4030: failed to register card\n");
            goto card_err;
      }

      return ret;

card_err:
      snd_soc_free_pcms(socdev);
      snd_soc_dapm_free(socdev);
pcm_err:
      kfree(codec->reg_cache);
      return ret;
}

static struct snd_soc_device *twl4030_socdev;

static int twl4030_probe(struct platform_device *pdev)
{
      struct snd_soc_device *socdev = platform_get_drvdata(pdev);
      struct snd_soc_codec *codec;
      struct twl4030_priv *twl4030;

      codec = kzalloc(sizeof(struct snd_soc_codec), GFP_KERNEL);
      if (codec == NULL)
            return -ENOMEM;

      twl4030 = kzalloc(sizeof(struct twl4030_priv), GFP_KERNEL);
      if (twl4030 == NULL) {
            kfree(codec);
            return -ENOMEM;
      }

      codec->private_data = twl4030;
      socdev->card->codec = codec;
      mutex_init(&codec->mutex);
      INIT_LIST_HEAD(&codec->dapm_widgets);
      INIT_LIST_HEAD(&codec->dapm_paths);

      twl4030_socdev = socdev;
      twl4030_init(socdev);

      return 0;
}

static int twl4030_remove(struct platform_device *pdev)
{
      struct snd_soc_device *socdev = platform_get_drvdata(pdev);
      struct snd_soc_codec *codec = socdev->card->codec;

      printk(KERN_INFO "TWL4030 Audio Codec remove\n");
      twl4030_set_bias_level(codec, SND_SOC_BIAS_OFF);
      snd_soc_free_pcms(socdev);
      snd_soc_dapm_free(socdev);
      kfree(codec->private_data);
      kfree(codec);

      return 0;
}

struct snd_soc_codec_device soc_codec_dev_twl4030 = {
      .probe = twl4030_probe,
      .remove = twl4030_remove,
      .suspend = twl4030_suspend,
      .resume = twl4030_resume,
};
EXPORT_SYMBOL_GPL(soc_codec_dev_twl4030);

static int __init twl4030_modinit(void)
{
      return snd_soc_register_dais(&twl4030_dai[0], ARRAY_SIZE(twl4030_dai));
}
module_init(twl4030_modinit);

static void __exit twl4030_exit(void)
{
      snd_soc_unregister_dais(&twl4030_dai[0], ARRAY_SIZE(twl4030_dai));
}
module_exit(twl4030_exit);

MODULE_DESCRIPTION("ASoC TWL4030 codec driver");
MODULE_AUTHOR("Steve Sakoman");
MODULE_LICENSE("GPL");

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