// SPDX-License-Identifier: GPL-2.0-only
/*
 * ALSA SoC TWL4030 codec driver
 *
 * Author:      Steve Sakoman, <steve@sakoman.com>
 */

#include <linux/delay.h>
#include <linux/gpio/consumer.h>
#include <linux/i2c.h>
#include <linux/init.h>
#include <linux/mfd/twl.h>
#include <linux/mfd/twl4030-audio.h>
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/of.h>
#include <linux/pm.h>
#include <linux/platform_device.h>
#include <linux/slab.h>
#include <sound/core.h>
#include <sound/initval.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
#include <sound/soc.h>
#include <sound/tlv.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)

struct twl4030_board_params {
        unsigned int digimic_delay; /* in ms */
        unsigned int ramp_delay_value;
        unsigned int offset_cncl_path;
        unsigned int hs_extmute:1;
        struct gpio_desc *hs_extmute_gpio;
};

/* 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_board_params *board_params;
};

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_component *component, unsigned int reg)
{
        struct twl4030_priv *twl4030 = snd_soc_component_get_drvdata(component);
        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_component *component, unsigned int reg,
                         unsigned int value)
{
        struct twl4030_priv *twl4030 = snd_soc_component_get_drvdata(component);

        /* 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_component *component, int enable)
{
        struct twl4030_priv *twl4030 = snd_soc_component_get_drvdata(component);
        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_get_board_param_values(struct twl4030_board_params *board_params,
                               struct device_node *node)
{
        int value;

        of_property_read_u32(node, "ti,digimic_delay", &board_params->digimic_delay);
        of_property_read_u32(node, "ti,ramp_delay_value", &board_params->ramp_delay_value);
        of_property_read_u32(node, "ti,offset_cncl_path", &board_params->offset_cncl_path);
        if (!of_property_read_u32(node, "ti,hs_extmute", &value))
                board_params->hs_extmute = value;

        if (of_property_present(node, "ti,hs_extmute_gpio"))
                board_params->hs_extmute = 1;
}

static struct twl4030_board_params*
twl4030_get_board_params(struct snd_soc_component *component)
{
        struct twl4030_board_params *board_params = NULL;
        struct device_node *twl4030_codec_node = NULL;

        twl4030_codec_node = of_get_child_by_name(component->dev->parent->of_node,
                                                  "codec");

        if (twl4030_codec_node) {
                board_params = devm_kzalloc(component->dev,
                                            sizeof(struct twl4030_board_params),
                                            GFP_KERNEL);
                if (!board_params) {
                        of_node_put(twl4030_codec_node);
                        return NULL;
                }
                twl4030_get_board_param_values(board_params, twl4030_codec_node);
                of_node_put(twl4030_codec_node);
        }

        return board_params;
}

static int twl4030_init_chip(struct snd_soc_component *component)
{
        struct twl4030_board_params *board_params;
        struct twl4030_priv *twl4030 = snd_soc_component_get_drvdata(component);
        u8 reg, byte;
        int i = 0;

        board_params = twl4030_get_board_params(component);

        if (board_params && board_params->hs_extmute) {
                board_params->hs_extmute_gpio = devm_gpiod_get_optional(component->dev,
                                                                        "ti,hs_extmute",
                                                                        GPIOD_OUT_LOW);
                if (IS_ERR(board_params->hs_extmute_gpio))
                        return dev_err_probe(component->dev, PTR_ERR(board_params->hs_extmute_gpio),
                                             "Failed to get hs_extmute GPIO\n");

                if (board_params->hs_extmute_gpio) {
                        gpiod_set_consumer_name(board_params->hs_extmute_gpio, "hs_extmute");
                } else {
                        u8 pin_mux;

                        dev_info(component->dev, "use TWL4030 GPIO6\n");

                        /* 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(component, TWL4030_REG_MISC_SET_1);
        twl4030_write(component, TWL4030_REG_MISC_SET_1,
                      reg | TWL4030_SMOOTH_ANAVOL_EN);

        twl4030_write(component, 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(component, TWL4030_REG_ARXR2_APGA_CTL, 0x32);

        /* Machine dependent setup */
        if (!board_params)
                return 0;

        twl4030->board_params = board_params;

        reg = twl4030_read(component, TWL4030_REG_HS_POPN_SET);
        reg &= ~TWL4030_RAMP_DELAY;
        reg |= (board_params->ramp_delay_value << 2);
        twl4030_write(component, TWL4030_REG_HS_POPN_SET, reg);

        /* initiate offset cancellation */
        twl4030_codec_enable(component, 1);

        reg = twl4030_read(component, TWL4030_REG_ANAMICL);
        reg &= ~TWL4030_OFFSET_CNCL_SEL;
        reg |= board_params->offset_cncl_path;
        twl4030_write(component, 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(component, 0);

        return 0;
}

static void twl4030_apll_enable(struct snd_soc_component *component, int enable)
{
        struct twl4030_priv *twl4030 = snd_soc_component_get_drvdata(component);

        if (enable) {
                twl4030->apll_enabled++;
                if (twl4030->apll_enabled == 1)
                        twl4030_audio_enable_resource(
                                                        TWL4030_AUDIO_RES_APLL);
        } else {
                twl4030->apll_enabled--;
                if (!twl4030->apll_enabled)
                        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 SOC_ENUM_SINGLE_DECL(twl4030_handsfreel_enum,
                            TWL4030_REG_HFL_CTL, 0,
                            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 SOC_ENUM_SINGLE_DECL(twl4030_handsfreer_enum,
                            TWL4030_REG_HFR_CTL, 0,
                            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 SOC_ENUM_SINGLE_DECL(twl4030_vibra_enum,
                            TWL4030_REG_VIBRA_CTL, 2,
                            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 SOC_ENUM_SINGLE_DECL(twl4030_vibrapath_enum,
                            TWL4030_REG_VIBRA_CTL, 4,
                            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 SOC_ENUM_SINGLE_DECL(twl4030_micpathtx1_enum,
                            TWL4030_REG_ADCMICSEL, 0,
                            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 SOC_ENUM_SINGLE_DECL(twl4030_micpathtx2_enum,
                            TWL4030_REG_ADCMICSEL, 2,
                            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 DECLARE_TLV_DB_RANGE(twl4030_dapm_dbypass_tlv,
        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)                               \
static int pin_name##pga_event(struct snd_soc_dapm_widget *w,           \
                               struct snd_kcontrol *kcontrol, int event) \
{                                                                       \
        struct snd_soc_component *component = snd_soc_dapm_to_component(w->dapm);       \
        struct twl4030_priv *twl4030 = snd_soc_component_get_drvdata(component); \
                                                                        \
        switch (event) {                                                \
        case SND_SOC_DAPM_POST_PMU:                                     \
                twl4030->pin_name##_enabled = 1;                        \
                twl4030_write(component, reg, twl4030_read(component, 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_OUTPUT_PGA(predrivel, TWL4030_REG_PREDL_CTL);
TWL4030_OUTPUT_PGA(predriver, TWL4030_REG_PREDR_CTL);
TWL4030_OUTPUT_PGA(carkitl, TWL4030_REG_PRECKL_CTL);
TWL4030_OUTPUT_PGA(carkitr, TWL4030_REG_PRECKR_CTL);

static void handsfree_ramp(struct snd_soc_component *component, int reg, int ramp)
{
        unsigned char hs_ctl;

        hs_ctl = twl4030_read(component, reg);

        if (ramp) {
                /* HF ramp-up */
                hs_ctl |= TWL4030_HF_CTL_REF_EN;
                twl4030_write(component, reg, hs_ctl);
                udelay(10);
                hs_ctl |= TWL4030_HF_CTL_RAMP_EN;
                twl4030_write(component, reg, hs_ctl);
                udelay(40);
                hs_ctl |= TWL4030_HF_CTL_LOOP_EN;
                hs_ctl |= TWL4030_HF_CTL_HB_EN;
                twl4030_write(component, reg, hs_ctl);
        } else {
                /* HF ramp-down */
                hs_ctl &= ~TWL4030_HF_CTL_LOOP_EN;
                hs_ctl &= ~TWL4030_HF_CTL_HB_EN;
                twl4030_write(component, reg, hs_ctl);
                hs_ctl &= ~TWL4030_HF_CTL_RAMP_EN;
                twl4030_write(component, reg, hs_ctl);
                udelay(40);
                hs_ctl &= ~TWL4030_HF_CTL_REF_EN;
                twl4030_write(component, reg, hs_ctl);
        }
}

static int handsfreelpga_event(struct snd_soc_dapm_widget *w,
                               struct snd_kcontrol *kcontrol, int event)
{
        struct snd_soc_component *component = snd_soc_dapm_to_component(w->dapm);

        switch (event) {
        case SND_SOC_DAPM_POST_PMU:
                handsfree_ramp(component, TWL4030_REG_HFL_CTL, 1);
                break;
        case SND_SOC_DAPM_POST_PMD:
                handsfree_ramp(component, TWL4030_REG_HFL_CTL, 0);
                break;
        }
        return 0;
}

static int handsfreerpga_event(struct snd_soc_dapm_widget *w,
                               struct snd_kcontrol *kcontrol, int event)
{
        struct snd_soc_component *component = snd_soc_dapm_to_component(w->dapm);

        switch (event) {
        case SND_SOC_DAPM_POST_PMU:
                handsfree_ramp(component, TWL4030_REG_HFR_CTL, 1);
                break;
        case SND_SOC_DAPM_POST_PMD:
                handsfree_ramp(component, TWL4030_REG_HFR_CTL, 0);
                break;
        }
        return 0;
}

static int vibramux_event(struct snd_soc_dapm_widget *w,
                          struct snd_kcontrol *kcontrol, int event)
{
        struct snd_soc_component *component = snd_soc_dapm_to_component(w->dapm);

        twl4030_write(component, TWL4030_REG_VIBRA_SET, 0xff);
        return 0;
}

static int apll_event(struct snd_soc_dapm_widget *w,
                      struct snd_kcontrol *kcontrol, int event)
{
        struct snd_soc_component *component = snd_soc_dapm_to_component(w->dapm);

        switch (event) {
        case SND_SOC_DAPM_PRE_PMU:
                twl4030_apll_enable(component, 1);
                break;
        case SND_SOC_DAPM_POST_PMD:
                twl4030_apll_enable(component, 0);
                break;
        }
        return 0;
}

static int aif_event(struct snd_soc_dapm_widget *w,
                     struct snd_kcontrol *kcontrol, int event)
{
        struct snd_soc_component *component = snd_soc_dapm_to_component(w->dapm);
        u8 audio_if;

        audio_if = twl4030_read(component, 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(component, 1);

                twl4030_write(component, 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(component, TWL4030_REG_AUDIO_IF,
                              audio_if &  ~TWL4030_AIF_EN);
                twl4030_apll_enable(component, 0);
                break;
        }
        return 0;
}

static void headset_ramp(struct snd_soc_component *component, int ramp)
{
        unsigned char hs_gain, hs_pop;
        struct twl4030_priv *twl4030 = snd_soc_component_get_drvdata(component);
        struct twl4030_board_params *board_params = twl4030->board_params;
        /* Base values for ramp delay calculation: 2^19 - 2^26 */
        static const unsigned int ramp_base[] = {
                524288, 1048576, 2097152, 4194304,
                8388608, 16777216, 33554432, 67108864
        };
        unsigned int delay;

        hs_gain = twl4030_read(component, TWL4030_REG_HS_GAIN_SET);
        hs_pop = twl4030_read(component, 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 (board_params && board_params->hs_extmute) {
                if (board_params->hs_extmute_gpio) {
                        gpiod_set_value(board_params->hs_extmute_gpio, 1);
                } else {
                        hs_pop |= TWL4030_EXTMUTE;
                        twl4030_write(component, TWL4030_REG_HS_POPN_SET, hs_pop);
                }
        }

        if (ramp) {
                /* Headset ramp-up according to the TRM */
                hs_pop |= TWL4030_VMID_EN;
                twl4030_write(component, 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(component, 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(component, 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(component, TWL4030_REG_HS_POPN_SET, hs_pop);
        }

        /* Disable external mute */
        if (board_params && board_params->hs_extmute) {
                if (board_params->hs_extmute_gpio) {
                        gpiod_set_value(board_params->hs_extmute_gpio, 0);
                } else {
                        hs_pop &= ~TWL4030_EXTMUTE;
                        twl4030_write(component, TWL4030_REG_HS_POPN_SET, hs_pop);
                }
        }
}

static int headsetlpga_event(struct snd_soc_dapm_widget *w,
                             struct snd_kcontrol *kcontrol, int event)
{
        struct snd_soc_component *component = snd_soc_dapm_to_component(w->dapm);
        struct twl4030_priv *twl4030 = snd_soc_component_get_drvdata(component);

        switch (event) {
        case SND_SOC_DAPM_POST_PMU:
                /* Do the ramp-up only once */
                if (!twl4030->hsr_enabled)
                        headset_ramp(component, 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(component, 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 snd_soc_component *component = snd_soc_dapm_to_component(w->dapm);
        struct twl4030_priv *twl4030 = snd_soc_component_get_drvdata(component);

        switch (event) {
        case SND_SOC_DAPM_POST_PMU:
                /* Do the ramp-up only once */
                if (!twl4030->hsl_enabled)
                        headset_ramp(component, 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(component, 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 snd_soc_component *component = snd_soc_dapm_to_component(w->dapm);
        struct twl4030_priv *twl4030 = snd_soc_component_get_drvdata(component);
        struct twl4030_board_params *board_params = twl4030->board_params;

        if (board_params && board_params->digimic_delay)
                twl4030_wait_ms(board_params->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_component *component = 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] =
                (twl4030_read(component, 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] =
                        (twl4030_read(component, 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_component *component = 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_component_update_bits(component, 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_component *component = 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] =
                (twl4030_read(component, reg) >> shift) & mask;
        ucontrol->value.integer.value[1] =
                (twl4030_read(component, 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_component *component = 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_component_update_bits(component, reg, val_mask, val);
        if (err < 0)
                return err;

        err = snd_soc_component_update_bits(component, reg2, val_mask, val2);
        return err;
}

/* Codec operation modes */
static const char *twl4030_op_modes_texts[] = {
        "Option 2 (voice/audio)", "Option 1 (audio)"
};

static SOC_ENUM_SINGLE_DECL(twl4030_op_modes_enum,
                            TWL4030_REG_CODEC_MODE, 0,
                            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_component *component = snd_kcontrol_chip(kcontrol);
        struct twl4030_priv *twl4030 = snd_soc_component_get_drvdata(component);

        if (twl4030->configured) {
                dev_err(component->dev,
                        "operation mode cannot be changed on-the-fly\n");
                return -EBUSY;
        }

        return snd_soc_put_enum_double(kcontrol, ucontrol);
}

/*
 * 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 SOC_ENUM_SINGLE_DECL(twl4030_avadc_clk_priority_enum,
                            TWL4030_REG_AVADC_CTL, 2,
                            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 SOC_ENUM_SINGLE_DECL(twl4030_rampdelay_enum,
                            TWL4030_REG_HS_POPN_SET, 2,
                            twl4030_rampdelay_texts);

/* Vibra H-bridge direction mode */
static const char *twl4030_vibradirmode_texts[] = {
        "Vibra H-bridge direction", "Audio data MSB",
};

static SOC_ENUM_SINGLE_DECL(twl4030_vibradirmode_enum,
                            TWL4030_REG_VIBRA_CTL, 5,
                            twl4030_vibradirmode_texts);

/* Vibra H-bridge direction */
static const char *twl4030_vibradir_texts[] = {
        "Positive polarity", "Negative polarity",
};

static SOC_ENUM_SINGLE_DECL(twl4030_vibradir_enum,
                            TWL4030_REG_VIBRA_CTL, 1,
                            twl4030_vibradir_texts);

/* Digimic Left and right swapping */
static const char *twl4030_digimicswap_texts[] = {
        "Not swapped", "Swapped",
};

static SOC_ENUM_SINGLE_DECL(twl4030_digimicswap_enum,
                            TWL4030_REG_MISC_SET_1, 0,
                            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_component *component,
                                  enum snd_soc_bias_level level)
{
        struct snd_soc_dapm_context *dapm = snd_soc_component_to_dapm(component);

        switch (level) {
        case SND_SOC_BIAS_ON:
                break;
        case SND_SOC_BIAS_PREPARE:
                break;
        case SND_SOC_BIAS_STANDBY:
                if (snd_soc_dapm_get_bias_level(dapm) == SND_SOC_BIAS_OFF)
                        twl4030_codec_enable(component, 1);
                break;
        case SND_SOC_BIAS_OFF:
                twl4030_codec_enable(component, 0);
                break;
        }

        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_single(slv_substream->runtime,
                                SNDRV_PCM_HW_PARAM_RATE,
                                twl4030->rate);

        snd_pcm_hw_constraint_single(slv_substream->runtime,
                                SNDRV_PCM_HW_PARAM_SAMPLE_BITS,
                                twl4030->sample_bits);

        snd_pcm_hw_constraint_single(slv_substream->runtime,
                                SNDRV_PCM_HW_PARAM_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_component *component, int direction,
                               int enable)
{
        u8 reg, mask;

        reg = twl4030_read(component, 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(component, TWL4030_REG_OPTION, reg);
}

static int twl4030_startup(struct snd_pcm_substream *substream,
                           struct snd_soc_dai *dai)
{
        struct snd_soc_component *component = dai->component;
        struct twl4030_priv *twl4030 = snd_soc_component_get_drvdata(component);

        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(component, 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_single(substream->runtime,
                                                     SNDRV_PCM_HW_PARAM_CHANNELS,
                                                     2);
                }
                twl4030->master_substream = substream;
        }

        return 0;
}

static void twl4030_shutdown(struct snd_pcm_substream *substream,
                             struct snd_soc_dai *dai)
{
        struct snd_soc_component *component = dai->component;
        struct twl4030_priv *twl4030 = snd_soc_component_get_drvdata(component);

        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(component, 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_component *component = dai->component;
        struct twl4030_priv *twl4030 = snd_soc_component_get_drvdata(component);
        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(component, TWL4030_REG_AUDIO_IF);
                mode = twl4030_read(component, 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(component, substream->stream, 1);
                else
                        return -EINVAL;
        }

        if (twl4030->configured)
                /* Ignoring hw_params for already configured DAI */
                return 0;

        /* bit rate */
        old_mode = twl4030_read(component,
                                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(component->dev, "%s: unknown rate %d\n", __func__,
                        params_rate(params));
                return -EINVAL;
        }

        /* sample size */
        old_format = twl4030_read(component, TWL4030_REG_AUDIO_IF);
        format = old_format;
        format &= ~TWL4030_DATA_WIDTH;
        switch (params_width(params)) {
        case 16:
                format |= TWL4030_DATA_WIDTH_16S_16W;
                break;
        case 32:
                format |= TWL4030_DATA_WIDTH_32S_24W;
                break;
        default:
                dev_err(component->dev, "%s: unsupported bits/sample %d\n",
                        __func__, params_width(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(component, 0);
                        twl4030_write(component, TWL4030_REG_CODEC_MODE, mode);
                        twl4030_write(component, TWL4030_REG_AUDIO_IF, format);
                        twl4030_codec_enable(component, 1);
                } else {
                        twl4030_write(component, TWL4030_REG_CODEC_MODE, mode);
                        twl4030_write(component, 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_component *component = codec_dai->component;
        struct twl4030_priv *twl4030 = snd_soc_component_get_drvdata(component);

        switch (freq) {
        case 19200000:
        case 26000000:
        case 38400000:
                break;
        default:
                dev_err(component->dev, "Unsupported HFCLKIN: %u\n", freq);
                return -EINVAL;
        }

        if ((freq / 1000) != twl4030->sysclk) {
                dev_err(component->dev,
                        "Mismatch in HFCLKIN: %u (configured: %u)\n",
                        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_component *component = codec_dai->component;
        struct twl4030_priv *twl4030 = snd_soc_component_get_drvdata(component);
        u8 old_format, format;

        /* get format */
        old_format = twl4030_read(component, TWL4030_REG_AUDIO_IF);
        format = old_format;

        switch (fmt & SND_SOC_DAIFMT_CLOCK_PROVIDER_MASK) {
        case SND_SOC_DAIFMT_CBP_CFP:
                format &= ~(TWL4030_AIF_SLAVE_EN);
                format &= ~(TWL4030_CLK256FS_EN);
                break;
        case SND_SOC_DAIFMT_CBC_CFC:
                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(component, 0);
                        twl4030_write(component, TWL4030_REG_AUDIO_IF, format);
                        twl4030_codec_enable(component, 1);
                } else {
                        twl4030_write(component, TWL4030_REG_AUDIO_IF, format);
                }
        }

        return 0;
}

static int twl4030_set_tristate(struct snd_soc_dai *dai, int tristate)
{
        struct snd_soc_component *component = dai->component;
        u8 reg = twl4030_read(component, TWL4030_REG_AUDIO_IF);

        if (tristate)
                reg |= TWL4030_AIF_TRI_EN;
        else
                reg &= ~TWL4030_AIF_TRI_EN;

        return twl4030_write(component, 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_component *component, int direction,
                                 int enable)
{
        u8 reg, mask;

        reg = twl4030_read(component, 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(component, TWL4030_REG_OPTION, reg);
}

static int twl4030_voice_startup(struct snd_pcm_substream *substream,
                                 struct snd_soc_dai *dai)
{
        struct snd_soc_component *component = dai->component;
        struct twl4030_priv *twl4030 = snd_soc_component_get_drvdata(component);
        u8 mode;

        /* If the system master clock is not 26MHz, the voice PCM interface is
         * not available.
         */
        if (twl4030->sysclk != 26000) {
                dev_err(component->dev,
                        "%s: HFCLKIN is %u KHz, voice interface needs 26MHz\n",
                        __func__, twl4030->sysclk);
                return -EINVAL;
        }

        /* If the codec mode is not option2, the voice PCM interface is not
         * available.
         */
        mode = twl4030_read(component, TWL4030_REG_CODEC_MODE)
                & TWL4030_OPT_MODE;

        if (mode != TWL4030_OPTION_2) {
                dev_err(component->dev, "%s: the codec mode is not option2\n",
                        __func__);
                return -EINVAL;
        }

        return 0;
}

static void twl4030_voice_shutdown(struct snd_pcm_substream *substream,
                                   struct snd_soc_dai *dai)
{
        struct snd_soc_component *component = dai->component;

        /* Enable voice digital filters */
        twl4030_voice_enable(component, 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_component *component = dai->component;
        struct twl4030_priv *twl4030 = snd_soc_component_get_drvdata(component);
        u8 old_mode, mode;

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

        /* bit rate */
        old_mode = twl4030_read(component,
                                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(component->dev, "%s: unknown rate %d\n", __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(component, 0);
                        twl4030_write(component, TWL4030_REG_CODEC_MODE, mode);
                        twl4030_codec_enable(component, 1);
                } else {
                        twl4030_write(component, 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_component *component = codec_dai->component;
        struct twl4030_priv *twl4030 = snd_soc_component_get_drvdata(component);

        if (freq != 26000000) {
                dev_err(component->dev,
                        "%s: HFCLKIN is %u KHz, voice interface needs 26MHz\n",
                        __func__, freq / 1000);
                return -EINVAL;
        }
        if ((freq / 1000) != twl4030->sysclk) {
                dev_err(component->dev,
                        "Mismatch in HFCLKIN: %u (configured: %u)\n",
                        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_component *component = codec_dai->component;
        struct twl4030_priv *twl4030 = snd_soc_component_get_drvdata(component);
        u8 old_format, format;

        /* get format */
        old_format = twl4030_read(component, TWL4030_REG_VOICE_IF);
        format = old_format;

        switch (fmt & SND_SOC_DAIFMT_CLOCK_PROVIDER_MASK) {
        case SND_SOC_DAIFMT_CBP_CFP:
                format &= ~(TWL4030_VIF_SLAVE_EN);
                break;
        case SND_SOC_DAIFMT_CBC_CFC:
                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(component, 0);
                        twl4030_write(component, TWL4030_REG_VOICE_IF, format);
                        twl4030_codec_enable(component, 1);
                } else {
                        twl4030_write(component, TWL4030_REG_VOICE_IF, format);
                }
        }

        return 0;
}

static int twl4030_voice_set_tristate(struct snd_soc_dai *dai, int tristate)
{
        struct snd_soc_component *component = dai->component;
        u8 reg = twl4030_read(component, TWL4030_REG_VOICE_IF);

        if (tristate)
                reg |= TWL4030_VIF_TRI_EN;
        else
                reg &= ~TWL4030_VIF_TRI_EN;

        return twl4030_write(component, 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_component *component)
{
        struct twl4030_priv *twl4030;

        twl4030 = devm_kzalloc(component->dev, sizeof(struct twl4030_priv),
                               GFP_KERNEL);
        if (!twl4030)
                return -ENOMEM;
        snd_soc_component_set_drvdata(component, twl4030);
        /* Set the defaults, and power up the codec */
        twl4030->sysclk = twl4030_audio_get_mclk() / 1000;

        return twl4030_init_chip(component);
}

static const struct snd_soc_component_driver soc_component_dev_twl4030 = {
        .probe                  = twl4030_soc_probe,
        .read                   = twl4030_read,
        .write                  = twl4030_write,
        .set_bias_level         = twl4030_set_bias_level,
        .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),
        .use_pmdown_time        = 1,
        .endianness             = 1,
};

static int twl4030_codec_probe(struct platform_device *pdev)
{
        return devm_snd_soc_register_component(&pdev->dev,
                                      &soc_component_dev_twl4030,
                                      twl4030_dai, ARRAY_SIZE(twl4030_dai));
}

MODULE_ALIAS("platform:twl4030-codec");

static struct platform_driver twl4030_codec_driver = {
        .probe          = twl4030_codec_probe,
        .driver         = {
                .name   = "twl4030-codec",
        },
};

module_platform_driver(twl4030_codec_driver);

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