root/sound/soc/codecs/msm8916-wcd-analog.c
// SPDX-License-Identifier: GPL-2.0
// Copyright (c) 2016, The Linux Foundation. All rights reserved.

#include <linux/module.h>
#include <linux/err.h>
#include <linux/kernel.h>
#include <linux/delay.h>
#include <linux/regulator/consumer.h>
#include <linux/types.h>
#include <linux/of.h>
#include <linux/platform_device.h>
#include <linux/regmap.h>
#include <sound/soc.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
#include <sound/tlv.h>
#include <sound/jack.h>

#define CDC_D_REVISION1                 (0xf000)
#define CDC_D_PERPH_SUBTYPE             (0xf005)
#define CDC_D_INT_EN_SET                (0xf015)
#define CDC_D_INT_EN_CLR                (0xf016)
#define MBHC_SWITCH_INT                 BIT(7)
#define MBHC_MIC_ELECTRICAL_INS_REM_DET BIT(6)
#define MBHC_BUTTON_PRESS_DET           BIT(5)
#define MBHC_BUTTON_RELEASE_DET         BIT(4)
#define CDC_D_CDC_RST_CTL               (0xf046)
#define RST_CTL_DIG_SW_RST_N_MASK       BIT(7)
#define RST_CTL_DIG_SW_RST_N_RESET      0
#define RST_CTL_DIG_SW_RST_N_REMOVE_RESET BIT(7)

#define CDC_D_CDC_TOP_CLK_CTL           (0xf048)
#define TOP_CLK_CTL_A_MCLK_MCLK2_EN_MASK (BIT(2) | BIT(3))
#define TOP_CLK_CTL_A_MCLK_EN_ENABLE     BIT(2)
#define TOP_CLK_CTL_A_MCLK2_EN_ENABLE   BIT(3)

#define CDC_D_CDC_ANA_CLK_CTL           (0xf049)
#define ANA_CLK_CTL_EAR_HPHR_CLK_EN_MASK BIT(0)
#define ANA_CLK_CTL_EAR_HPHR_CLK_EN     BIT(0)
#define ANA_CLK_CTL_EAR_HPHL_CLK_EN     BIT(1)
#define ANA_CLK_CTL_SPKR_CLK_EN_MASK    BIT(4)
#define ANA_CLK_CTL_SPKR_CLK_EN BIT(4)
#define ANA_CLK_CTL_TXA_CLK25_EN        BIT(5)

#define CDC_D_CDC_DIG_CLK_CTL           (0xf04A)
#define DIG_CLK_CTL_RXD1_CLK_EN         BIT(0)
#define DIG_CLK_CTL_RXD2_CLK_EN         BIT(1)
#define DIG_CLK_CTL_RXD3_CLK_EN         BIT(2)
#define DIG_CLK_CTL_D_MBHC_CLK_EN_MASK  BIT(3)
#define DIG_CLK_CTL_D_MBHC_CLK_EN       BIT(3)
#define DIG_CLK_CTL_TXD_CLK_EN          BIT(4)
#define DIG_CLK_CTL_NCP_CLK_EN_MASK     BIT(6)
#define DIG_CLK_CTL_NCP_CLK_EN          BIT(6)
#define DIG_CLK_CTL_RXD_PDM_CLK_EN_MASK BIT(7)
#define DIG_CLK_CTL_RXD_PDM_CLK_EN      BIT(7)

#define CDC_D_CDC_CONN_TX1_CTL          (0xf050)
#define CONN_TX1_SERIAL_TX1_MUX         GENMASK(1, 0)
#define CONN_TX1_SERIAL_TX1_ADC_1       0x0
#define CONN_TX1_SERIAL_TX1_RX_PDM_LB   0x1
#define CONN_TX1_SERIAL_TX1_ZERO        0x2

#define CDC_D_CDC_CONN_TX2_CTL          (0xf051)
#define CONN_TX2_SERIAL_TX2_MUX         GENMASK(1, 0)
#define CONN_TX2_SERIAL_TX2_ADC_2       0x0
#define CONN_TX2_SERIAL_TX2_RX_PDM_LB   0x1
#define CONN_TX2_SERIAL_TX2_ZERO        0x2
#define CDC_D_CDC_CONN_HPHR_DAC_CTL     (0xf052)
#define CDC_D_CDC_CONN_RX1_CTL          (0xf053)
#define CDC_D_CDC_CONN_RX2_CTL          (0xf054)
#define CDC_D_CDC_CONN_RX3_CTL          (0xf055)
#define CDC_D_CDC_CONN_RX_LB_CTL        (0xf056)
#define CDC_D_SEC_ACCESS                (0xf0D0)
#define CDC_D_PERPH_RESET_CTL3          (0xf0DA)
#define CDC_D_PERPH_RESET_CTL4          (0xf0DB)
#define CDC_A_REVISION1                 (0xf100)
#define CDC_A_REVISION2                 (0xf101)
#define CDC_A_REVISION3                 (0xf102)
#define CDC_A_REVISION4                 (0xf103)
#define CDC_A_PERPH_TYPE                (0xf104)
#define CDC_A_PERPH_SUBTYPE             (0xf105)
#define CDC_A_INT_RT_STS                (0xf110)
#define CDC_A_INT_SET_TYPE              (0xf111)
#define CDC_A_INT_POLARITY_HIGH         (0xf112)
#define CDC_A_INT_POLARITY_LOW          (0xf113)
#define CDC_A_INT_LATCHED_CLR           (0xf114)
#define CDC_A_INT_EN_SET                (0xf115)
#define CDC_A_INT_EN_CLR                (0xf116)
#define CDC_A_INT_LATCHED_STS           (0xf118)
#define CDC_A_INT_PENDING_STS           (0xf119)
#define CDC_A_INT_MID_SEL               (0xf11A)
#define CDC_A_INT_PRIORITY              (0xf11B)
#define CDC_A_MICB_1_EN                 (0xf140)
#define MICB_1_EN_MICB_ENABLE           BIT(7)
#define MICB_1_EN_BYP_CAP_MASK          BIT(6)
#define MICB_1_EN_NO_EXT_BYP_CAP        BIT(6)
#define MICB_1_EN_EXT_BYP_CAP           0
#define MICB_1_EN_PULL_DOWN_EN_MASK     BIT(5)
#define MICB_1_EN_PULL_DOWN_EN_ENABLE   BIT(5)
#define MICB_1_EN_OPA_STG2_TAIL_CURR_MASK GENMASK(3, 1)
#define MICB_1_EN_OPA_STG2_TAIL_CURR_1_60UA     (0x4)
#define MICB_1_EN_PULL_UP_EN_MASK       BIT(4)
#define MICB_1_EN_TX3_GND_SEL_MASK      BIT(0)
#define MICB_1_EN_TX3_GND_SEL_TX_GND    0

#define CDC_A_MICB_1_VAL                (0xf141)
#define MICB_MIN_VAL 1600
#define MICB_STEP_SIZE 50
#define MICB_VOLTAGE_REGVAL(v)          (((v - MICB_MIN_VAL)/MICB_STEP_SIZE) << 3)
#define MICB_1_VAL_MICB_OUT_VAL_MASK    GENMASK(7, 3)
#define MICB_1_VAL_MICB_OUT_VAL_V2P70V  ((0x16)  << 3)
#define MICB_1_VAL_MICB_OUT_VAL_V1P80V  ((0x4)  << 3)
#define CDC_A_MICB_1_CTL                (0xf142)

#define MICB_1_CTL_CFILT_REF_SEL_MASK           BIT(1)
#define MICB_1_CTL_CFILT_REF_SEL_HPF_REF        BIT(1)
#define MICB_1_CTL_EXT_PRECHARG_EN_MASK         BIT(5)
#define MICB_1_CTL_EXT_PRECHARG_EN_ENABLE       BIT(5)
#define MICB_1_CTL_INT_PRECHARG_BYP_MASK        BIT(6)
#define MICB_1_CTL_INT_PRECHARG_BYP_EXT_PRECHRG_SEL     BIT(6)

#define CDC_A_MICB_1_INT_RBIAS                  (0xf143)
#define MICB_1_INT_TX1_INT_RBIAS_EN_MASK        BIT(7)
#define MICB_1_INT_TX1_INT_RBIAS_EN_ENABLE      BIT(7)
#define MICB_1_INT_TX1_INT_RBIAS_EN_DISABLE     0

#define MICB_1_INT_TX1_INT_PULLUP_EN_MASK       BIT(6)
#define MICB_1_INT_TX1_INT_PULLUP_EN_TX1N_TO_MICBIAS BIT(6)
#define MICB_1_INT_TX1_INT_PULLUP_EN_TX1N_TO_GND        0

#define MICB_1_INT_TX2_INT_RBIAS_EN_MASK        BIT(4)
#define MICB_1_INT_TX2_INT_RBIAS_EN_ENABLE      BIT(4)
#define MICB_1_INT_TX2_INT_RBIAS_EN_DISABLE     0
#define MICB_1_INT_TX2_INT_PULLUP_EN_MASK       BIT(3)
#define MICB_1_INT_TX2_INT_PULLUP_EN_TX1N_TO_MICBIAS BIT(3)
#define MICB_1_INT_TX2_INT_PULLUP_EN_TX1N_TO_GND        0

#define MICB_1_INT_TX3_INT_RBIAS_EN_MASK        BIT(1)
#define MICB_1_INT_TX3_INT_RBIAS_EN_ENABLE      BIT(1)
#define MICB_1_INT_TX3_INT_RBIAS_EN_DISABLE     0
#define MICB_1_INT_TX3_INT_PULLUP_EN_MASK       BIT(0)
#define MICB_1_INT_TX3_INT_PULLUP_EN_TX1N_TO_MICBIAS BIT(0)
#define MICB_1_INT_TX3_INT_PULLUP_EN_TX1N_TO_GND        0

#define CDC_A_MICB_2_EN                 (0xf144)
#define CDC_A_MICB_2_EN_ENABLE          BIT(7)
#define CDC_A_MICB_2_PULL_DOWN_EN_MASK  BIT(5)
#define CDC_A_MICB_2_PULL_DOWN_EN       BIT(5)
#define CDC_A_TX_1_2_ATEST_CTL_2        (0xf145)
#define CDC_A_MASTER_BIAS_CTL           (0xf146)
#define CDC_A_MBHC_DET_CTL_1            (0xf147)
#define CDC_A_MBHC_DET_CTL_L_DET_EN                     BIT(7)
#define CDC_A_MBHC_DET_CTL_GND_DET_EN                   BIT(6)
#define CDC_A_MBHC_DET_CTL_MECH_DET_TYPE_INSERTION      BIT(5)
#define CDC_A_MBHC_DET_CTL_MECH_DET_TYPE_REMOVAL        (0)
#define CDC_A_MBHC_DET_CTL_MECH_DET_TYPE_MASK           BIT(5)
#define CDC_A_MBHC_DET_CTL_MECH_DET_TYPE_SHIFT          (5)
#define CDC_A_MBHC_DET_CTL_MIC_CLAMP_CTL_AUTO           BIT(4)
#define CDC_A_MBHC_DET_CTL_MIC_CLAMP_CTL_MANUAL         BIT(3)
#define CDC_A_MBHC_DET_CTL_MIC_CLAMP_CTL_MASK           GENMASK(4, 3)
#define CDC_A_MBHC_DET_CTL_MBHC_BIAS_EN                 BIT(2)
#define CDC_A_MBHC_DET_CTL_2            (0xf150)
#define CDC_A_MBHC_DET_CTL_HS_L_DET_PULL_UP_CTRL_I_3P0  (BIT(7) | BIT(6))
#define CDC_A_MBHC_DET_CTL_HS_L_DET_COMPA_CTRL_V0P9_VDD BIT(5)
#define CDC_A_PLUG_TYPE_MASK                            GENMASK(4, 3)
#define CDC_A_HPHL_PLUG_TYPE_NO                         BIT(4)
#define CDC_A_GND_PLUG_TYPE_NO                          BIT(3)
#define CDC_A_MBHC_DET_CTL_HPHL_100K_TO_GND_EN_MASK     BIT(0)
#define CDC_A_MBHC_DET_CTL_HPHL_100K_TO_GND_EN          BIT(0)
#define CDC_A_MBHC_FSM_CTL              (0xf151)
#define CDC_A_MBHC_FSM_CTL_MBHC_FSM_EN                  BIT(7)
#define CDC_A_MBHC_FSM_CTL_MBHC_FSM_EN_MASK             BIT(7)
#define CDC_A_MBHC_FSM_CTL_BTN_ISRC_CTRL_I_100UA        (0x3 << 4)
#define CDC_A_MBHC_FSM_CTL_BTN_ISRC_CTRL_MASK           GENMASK(6, 4)
#define CDC_A_MBHC_DBNC_TIMER           (0xf152)
#define CDC_A_MBHC_DBNC_TIMER_BTN_DBNC_T_16MS           BIT(3)
#define CDC_A_MBHC_DBNC_TIMER_INSREM_DBNC_T_256_MS      (0x9 << 4)
#define CDC_A_MBHC_BTN0_ZDET_CTL_0      (0xf153)
#define CDC_A_MBHC_BTN1_ZDET_CTL_1      (0xf154)
#define CDC_A_MBHC_BTN2_ZDET_CTL_2      (0xf155)
#define CDC_A_MBHC_BTN3_CTL             (0xf156)
#define CDC_A_MBHC_BTN4_CTL             (0xf157)
#define CDC_A_MBHC_BTN_VREF_FINE_SHIFT  (2)
#define CDC_A_MBHC_BTN_VREF_FINE_MASK   GENMASK(4, 2)
#define CDC_A_MBHC_BTN_VREF_COARSE_MASK GENMASK(7, 5)
#define CDC_A_MBHC_BTN_VREF_COARSE_SHIFT (5)
#define CDC_A_MBHC_BTN_VREF_MASK        (CDC_A_MBHC_BTN_VREF_COARSE_MASK | \
                                        CDC_A_MBHC_BTN_VREF_FINE_MASK)
#define CDC_A_MBHC_RESULT_1             (0xf158)
#define CDC_A_MBHC_RESULT_1_BTN_RESULT_MASK     GENMASK(4, 0)
#define CDC_A_TX_1_EN                   (0xf160)
#define CDC_A_TX_2_EN                   (0xf161)
#define CDC_A_TX_1_2_TEST_CTL_1         (0xf162)
#define CDC_A_TX_1_2_TEST_CTL_2         (0xf163)
#define CDC_A_TX_1_2_ATEST_CTL          (0xf164)
#define CDC_A_TX_1_2_OPAMP_BIAS         (0xf165)
#define CDC_A_TX_3_EN                   (0xf167)
#define CDC_A_NCP_EN                    (0xf180)
#define CDC_A_NCP_CLK                   (0xf181)
#define CDC_A_NCP_FBCTRL                (0xf183)
#define CDC_A_NCP_FBCTRL_FB_CLK_INV_MASK        BIT(5)
#define CDC_A_NCP_FBCTRL_FB_CLK_INV             BIT(5)
#define CDC_A_NCP_BIAS                  (0xf184)
#define CDC_A_NCP_VCTRL                 (0xf185)
#define CDC_A_NCP_TEST                  (0xf186)
#define CDC_A_NCP_CLIM_ADDR             (0xf187)
#define CDC_A_RX_CLOCK_DIVIDER          (0xf190)
#define CDC_A_RX_COM_OCP_CTL            (0xf191)
#define CDC_A_RX_COM_OCP_COUNT          (0xf192)
#define CDC_A_RX_COM_BIAS_DAC           (0xf193)
#define RX_COM_BIAS_DAC_RX_BIAS_EN_MASK         BIT(7)
#define RX_COM_BIAS_DAC_RX_BIAS_EN_ENABLE       BIT(7)
#define RX_COM_BIAS_DAC_DAC_REF_EN_MASK         BIT(0)
#define RX_COM_BIAS_DAC_DAC_REF_EN_ENABLE       BIT(0)

#define CDC_A_RX_HPH_BIAS_PA            (0xf194)
#define CDC_A_RX_HPH_BIAS_LDO_OCP       (0xf195)
#define CDC_A_RX_HPH_BIAS_CNP           (0xf196)
#define CDC_A_RX_HPH_CNP_EN             (0xf197)
#define CDC_A_RX_HPH_L_PA_DAC_CTL       (0xf19B)
#define RX_HPA_L_PA_DAC_CTL_DATA_RESET_MASK     BIT(1)
#define RX_HPA_L_PA_DAC_CTL_DATA_RESET_RESET    BIT(1)
#define CDC_A_RX_HPH_R_PA_DAC_CTL       (0xf19D)
#define RX_HPH_R_PA_DAC_CTL_DATA_RESET  BIT(1)
#define RX_HPH_R_PA_DAC_CTL_DATA_RESET_MASK BIT(1)

#define CDC_A_RX_EAR_CTL                        (0xf19E)
#define RX_EAR_CTL_SPK_VBAT_LDO_EN_MASK         BIT(0)
#define RX_EAR_CTL_SPK_VBAT_LDO_EN_ENABLE       BIT(0)
#define RX_EAR_CTL_PA_EAR_PA_EN_MASK            BIT(6)
#define RX_EAR_CTL_PA_EAR_PA_EN_ENABLE          BIT(6)
#define RX_EAR_CTL_PA_SEL_MASK                  BIT(7)
#define RX_EAR_CTL_PA_SEL                       BIT(7)

#define CDC_A_SPKR_DAC_CTL              (0xf1B0)
#define SPKR_DAC_CTL_DAC_RESET_MASK     BIT(4)
#define SPKR_DAC_CTL_DAC_RESET_NORMAL   0

#define CDC_A_SPKR_DRV_CTL              (0xf1B2)
#define SPKR_DRV_CTL_DEF_MASK           0xEF
#define SPKR_DRV_CLASSD_PA_EN_MASK      BIT(7)
#define SPKR_DRV_CLASSD_PA_EN_ENABLE    BIT(7)
#define SPKR_DRV_CAL_EN                 BIT(6)
#define SPKR_DRV_SETTLE_EN              BIT(5)
#define SPKR_DRV_FW_EN                  BIT(3)
#define SPKR_DRV_BOOST_SET              BIT(2)
#define SPKR_DRV_CMFB_SET               BIT(1)
#define SPKR_DRV_GAIN_SET               BIT(0)
#define SPKR_DRV_CTL_DEF_VAL (SPKR_DRV_CLASSD_PA_EN_ENABLE | \
                SPKR_DRV_CAL_EN | SPKR_DRV_SETTLE_EN | \
                SPKR_DRV_FW_EN | SPKR_DRV_BOOST_SET | \
                SPKR_DRV_CMFB_SET | SPKR_DRV_GAIN_SET)
#define CDC_A_SPKR_OCP_CTL              (0xf1B4)
#define CDC_A_SPKR_PWRSTG_CTL           (0xf1B5)
#define SPKR_PWRSTG_CTL_DAC_EN_MASK     BIT(0)
#define SPKR_PWRSTG_CTL_DAC_EN          BIT(0)
#define SPKR_PWRSTG_CTL_MASK            0xE0
#define SPKR_PWRSTG_CTL_BBM_MASK        BIT(7)
#define SPKR_PWRSTG_CTL_BBM_EN          BIT(7)
#define SPKR_PWRSTG_CTL_HBRDGE_EN_MASK  BIT(6)
#define SPKR_PWRSTG_CTL_HBRDGE_EN       BIT(6)
#define SPKR_PWRSTG_CTL_CLAMP_EN_MASK   BIT(5)
#define SPKR_PWRSTG_CTL_CLAMP_EN        BIT(5)

#define CDC_A_SPKR_DRV_DBG              (0xf1B7)
#define CDC_A_CURRENT_LIMIT             (0xf1C0)
#define CDC_A_BOOST_EN_CTL              (0xf1C3)
#define CDC_A_SLOPE_COMP_IP_ZERO        (0xf1C4)
#define CDC_A_SEC_ACCESS                (0xf1D0)
#define CDC_A_PERPH_RESET_CTL3          (0xf1DA)
#define CDC_A_PERPH_RESET_CTL4          (0xf1DB)

#define MSM8916_WCD_ANALOG_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_16000 |\
                        SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_48000)
#define MSM8916_WCD_ANALOG_FORMATS (SNDRV_PCM_FMTBIT_S16_LE |\
                                    SNDRV_PCM_FMTBIT_S32_LE)

static int btn_mask = SND_JACK_BTN_0 | SND_JACK_BTN_1 |
               SND_JACK_BTN_2 | SND_JACK_BTN_3 | SND_JACK_BTN_4;
static int hs_jack_mask = SND_JACK_HEADPHONE | SND_JACK_HEADSET;

static const char * const supply_names[] = {
        "vdd-cdc-io",
        "vdd-cdc-tx-rx-cx",
};

#define MBHC_MAX_BUTTONS        (5)

struct pm8916_wcd_analog_priv {
        u16 pmic_rev;
        u16 codec_version;
        bool    mbhc_btn_enabled;
        /* special event to detect accessory type */
        int     mbhc_btn0_released;
        bool    detect_accessory_type;
        struct clk *mclk;
        struct snd_soc_component *component;
        struct regulator_bulk_data supplies[ARRAY_SIZE(supply_names)];
        struct snd_soc_jack *jack;
        bool hphl_jack_type_normally_open;
        bool gnd_jack_type_normally_open;
        /* Voltage threshold when internal current source of 100uA is used */
        u32 vref_btn_cs[MBHC_MAX_BUTTONS];
        /* Voltage threshold when microphone bias is ON */
        u32 vref_btn_micb[MBHC_MAX_BUTTONS];
        unsigned int micbias1_cap_mode;
        unsigned int micbias2_cap_mode;
        unsigned int micbias_mv;
};

static const char *const adc2_mux_text[] = { "ZERO", "INP2", "INP3" };
static const char *const rdac2_mux_text[] = { "RX1", "RX2" };
static const char *const hph_text[] = { "ZERO", "Switch", };

static const struct soc_enum hph_enum = SOC_ENUM_SINGLE_VIRT(
                                        ARRAY_SIZE(hph_text), hph_text);

static const struct snd_kcontrol_new ear_mux = SOC_DAPM_ENUM("EAR_S", hph_enum);
static const struct snd_kcontrol_new hphl_mux = SOC_DAPM_ENUM("HPHL", hph_enum);
static const struct snd_kcontrol_new hphr_mux = SOC_DAPM_ENUM("HPHR", hph_enum);

/* ADC2 MUX */
static const struct soc_enum adc2_enum = SOC_ENUM_SINGLE_VIRT(
                        ARRAY_SIZE(adc2_mux_text), adc2_mux_text);

/* RDAC2 MUX */
static const struct soc_enum rdac2_mux_enum = SOC_ENUM_SINGLE(
                        CDC_D_CDC_CONN_HPHR_DAC_CTL, 0, 2, rdac2_mux_text);

static const struct snd_kcontrol_new spkr_switch[] = {
        SOC_DAPM_SINGLE("Switch", CDC_A_SPKR_DAC_CTL, 7, 1, 0)
};

static const struct snd_kcontrol_new rdac2_mux = SOC_DAPM_ENUM(
                                        "RDAC2 MUX Mux", rdac2_mux_enum);
static const struct snd_kcontrol_new tx_adc2_mux = SOC_DAPM_ENUM(
                                        "ADC2 MUX Mux", adc2_enum);

/* Analog Gain control 0 dB to +24 dB in 6 dB steps */
static const DECLARE_TLV_DB_SCALE(analog_gain, 0, 600, 0);

static const struct snd_kcontrol_new pm8916_wcd_analog_snd_controls[] = {
        SOC_SINGLE_TLV("ADC1 Volume", CDC_A_TX_1_EN, 3, 8, 0, analog_gain),
        SOC_SINGLE_TLV("ADC2 Volume", CDC_A_TX_2_EN, 3, 8, 0, analog_gain),
        SOC_SINGLE_TLV("ADC3 Volume", CDC_A_TX_3_EN, 3, 8, 0, analog_gain),
};

static void pm8916_wcd_analog_micbias_enable(struct snd_soc_component *component)
{
        struct pm8916_wcd_analog_priv *wcd = snd_soc_component_get_drvdata(component);

        snd_soc_component_update_bits(component, CDC_A_MICB_1_CTL,
                            MICB_1_CTL_EXT_PRECHARG_EN_MASK |
                            MICB_1_CTL_INT_PRECHARG_BYP_MASK,
                            MICB_1_CTL_INT_PRECHARG_BYP_EXT_PRECHRG_SEL
                            | MICB_1_CTL_EXT_PRECHARG_EN_ENABLE);

        if (wcd->micbias_mv) {
                snd_soc_component_update_bits(component, CDC_A_MICB_1_VAL,
                                    MICB_1_VAL_MICB_OUT_VAL_MASK,
                                    MICB_VOLTAGE_REGVAL(wcd->micbias_mv));
                /*
                 * Special headset needs MICBIAS as 2.7V so wait for
                 * 50 msec for the MICBIAS to reach 2.7 volts.
                 */
                if (wcd->micbias_mv >= 2700)
                        msleep(50);
        }

        snd_soc_component_update_bits(component, CDC_A_MICB_1_CTL,
                            MICB_1_CTL_EXT_PRECHARG_EN_MASK |
                            MICB_1_CTL_INT_PRECHARG_BYP_MASK, 0);

}

static int pm8916_wcd_analog_enable_micbias(struct snd_soc_component *component,
                                            int event, unsigned int cap_mode)
{
        switch (event) {
        case SND_SOC_DAPM_POST_PMU:
                pm8916_wcd_analog_micbias_enable(component);
                snd_soc_component_update_bits(component, CDC_A_MICB_1_EN,
                                    MICB_1_EN_BYP_CAP_MASK, cap_mode);
                break;
        }

        return 0;
}

static int pm8916_wcd_analog_enable_micbias_int(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:
                snd_soc_component_update_bits(component, CDC_A_MICB_1_EN,
                                    MICB_1_EN_OPA_STG2_TAIL_CURR_MASK,
                                    MICB_1_EN_OPA_STG2_TAIL_CURR_1_60UA);
                break;
        }

        return 0;
}

static int pm8916_wcd_analog_enable_micbias1(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 pm8916_wcd_analog_priv *wcd = snd_soc_component_get_drvdata(component);

        return pm8916_wcd_analog_enable_micbias(component, event,
                                                wcd->micbias1_cap_mode);
}

static int pm8916_wcd_analog_enable_micbias2(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 pm8916_wcd_analog_priv *wcd = snd_soc_component_get_drvdata(component);

        return pm8916_wcd_analog_enable_micbias(component, event,
                                                wcd->micbias2_cap_mode);

}

static int pm8916_mbhc_configure_bias(struct pm8916_wcd_analog_priv *priv,
                                      bool micbias2_enabled)
{
        struct snd_soc_component *component = priv->component;
        u32 coarse, fine, reg_val, reg_addr;
        int *vrefs, i;

        if (!micbias2_enabled) { /* use internal 100uA Current source */
                /* Enable internal 2.2k Internal Rbias Resistor */
                snd_soc_component_update_bits(component, CDC_A_MICB_1_INT_RBIAS,
                                    MICB_1_INT_TX2_INT_RBIAS_EN_MASK,
                                    MICB_1_INT_TX2_INT_RBIAS_EN_ENABLE);
                /* Remove pull down on MIC BIAS2 */
                snd_soc_component_update_bits(component, CDC_A_MICB_2_EN,
                                   CDC_A_MICB_2_PULL_DOWN_EN_MASK,
                                   0);
                /* enable 100uA internal current source */
                snd_soc_component_update_bits(component, CDC_A_MBHC_FSM_CTL,
                                    CDC_A_MBHC_FSM_CTL_BTN_ISRC_CTRL_MASK,
                                    CDC_A_MBHC_FSM_CTL_BTN_ISRC_CTRL_I_100UA);
        }
        snd_soc_component_update_bits(component, CDC_A_MBHC_FSM_CTL,
                        CDC_A_MBHC_FSM_CTL_MBHC_FSM_EN_MASK,
                        CDC_A_MBHC_FSM_CTL_MBHC_FSM_EN);

        if (micbias2_enabled)
                vrefs = &priv->vref_btn_micb[0];
        else
                vrefs = &priv->vref_btn_cs[0];

        /* program vref ranges for all the buttons */
        reg_addr = CDC_A_MBHC_BTN0_ZDET_CTL_0;
        for (i = 0; i <  MBHC_MAX_BUTTONS; i++) {
                /* split mv in to coarse parts of 100mv & fine parts of 12mv */
                coarse = (vrefs[i] / 100);
                fine = ((vrefs[i] % 100) / 12);
                reg_val = (coarse << CDC_A_MBHC_BTN_VREF_COARSE_SHIFT) |
                         (fine << CDC_A_MBHC_BTN_VREF_FINE_SHIFT);
                snd_soc_component_update_bits(component, reg_addr,
                               CDC_A_MBHC_BTN_VREF_MASK,
                               reg_val);
                reg_addr++;
        }

        return 0;
}

static void pm8916_wcd_setup_mbhc(struct pm8916_wcd_analog_priv *wcd)
{
        struct snd_soc_component *component = wcd->component;
        bool micbias_enabled = false;
        u32 plug_type = 0;
        u32 int_en_mask;

        snd_soc_component_write(component, CDC_A_MBHC_DET_CTL_1,
                      CDC_A_MBHC_DET_CTL_L_DET_EN |
                      CDC_A_MBHC_DET_CTL_MECH_DET_TYPE_INSERTION |
                      CDC_A_MBHC_DET_CTL_MIC_CLAMP_CTL_AUTO |
                      CDC_A_MBHC_DET_CTL_MBHC_BIAS_EN);

        if (wcd->hphl_jack_type_normally_open)
                plug_type |= CDC_A_HPHL_PLUG_TYPE_NO;

        if (wcd->gnd_jack_type_normally_open)
                plug_type |= CDC_A_GND_PLUG_TYPE_NO;

        snd_soc_component_write(component, CDC_A_MBHC_DET_CTL_2,
                      CDC_A_MBHC_DET_CTL_HS_L_DET_PULL_UP_CTRL_I_3P0 |
                      CDC_A_MBHC_DET_CTL_HS_L_DET_COMPA_CTRL_V0P9_VDD |
                      plug_type |
                      CDC_A_MBHC_DET_CTL_HPHL_100K_TO_GND_EN);


        snd_soc_component_write(component, CDC_A_MBHC_DBNC_TIMER,
                      CDC_A_MBHC_DBNC_TIMER_INSREM_DBNC_T_256_MS |
                      CDC_A_MBHC_DBNC_TIMER_BTN_DBNC_T_16MS);

        /* enable MBHC clock */
        snd_soc_component_update_bits(component, CDC_D_CDC_DIG_CLK_CTL,
                            DIG_CLK_CTL_D_MBHC_CLK_EN_MASK,
                            DIG_CLK_CTL_D_MBHC_CLK_EN);

        if (snd_soc_component_read(component, CDC_A_MICB_2_EN) & CDC_A_MICB_2_EN_ENABLE)
                micbias_enabled = true;

        pm8916_mbhc_configure_bias(wcd, micbias_enabled);

        int_en_mask = MBHC_SWITCH_INT;
        if (wcd->mbhc_btn_enabled)
                int_en_mask |= MBHC_BUTTON_PRESS_DET | MBHC_BUTTON_RELEASE_DET;

        snd_soc_component_update_bits(component, CDC_D_INT_EN_CLR, int_en_mask, 0);
        snd_soc_component_update_bits(component, CDC_D_INT_EN_SET, int_en_mask, int_en_mask);
        wcd->mbhc_btn0_released = false;
        wcd->detect_accessory_type = true;
}

static int pm8916_wcd_analog_enable_micbias_int2(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 pm8916_wcd_analog_priv *wcd = snd_soc_component_get_drvdata(component);

        switch (event) {
        case SND_SOC_DAPM_PRE_PMU:
                snd_soc_component_update_bits(component, CDC_A_MICB_2_EN,
                                              CDC_A_MICB_2_PULL_DOWN_EN_MASK, 0);
                break;
        case SND_SOC_DAPM_POST_PMU:
                pm8916_mbhc_configure_bias(wcd, true);
                break;
        case SND_SOC_DAPM_POST_PMD:
                pm8916_mbhc_configure_bias(wcd, false);
                break;
        }

        return pm8916_wcd_analog_enable_micbias_int(w, kcontrol, event);
}

static int pm8916_wcd_analog_enable_adc(struct snd_soc_dapm_widget *w,
                                         struct snd_kcontrol *kcontrol,
                                         int event)
{
        struct snd_soc_component *component = snd_soc_dapm_to_component(w->dapm);
        u16 adc_reg = CDC_A_TX_1_2_TEST_CTL_2;
        u8 init_bit_shift;

        if (w->reg == CDC_A_TX_1_EN)
                init_bit_shift = 5;
        else
                init_bit_shift = 4;

        switch (event) {
        case SND_SOC_DAPM_PRE_PMU:
                if (w->reg == CDC_A_TX_2_EN)
                        snd_soc_component_update_bits(component, CDC_A_MICB_1_CTL,
                                            MICB_1_CTL_CFILT_REF_SEL_MASK,
                                            MICB_1_CTL_CFILT_REF_SEL_HPF_REF);
                /*
                 * Add delay of 10 ms to give sufficient time for the voltage
                 * to shoot up and settle so that the txfe init does not
                 * happen when the input voltage is changing too much.
                 */
                usleep_range(10000, 10010);
                snd_soc_component_update_bits(component, adc_reg, 1 << init_bit_shift,
                                    1 << init_bit_shift);
                switch (w->reg) {
                case CDC_A_TX_1_EN:
                        snd_soc_component_update_bits(component, CDC_D_CDC_CONN_TX1_CTL,
                                            CONN_TX1_SERIAL_TX1_MUX,
                                            CONN_TX1_SERIAL_TX1_ADC_1);
                        break;
                case CDC_A_TX_2_EN:
                case CDC_A_TX_3_EN:
                        snd_soc_component_update_bits(component, CDC_D_CDC_CONN_TX2_CTL,
                                            CONN_TX2_SERIAL_TX2_MUX,
                                            CONN_TX2_SERIAL_TX2_ADC_2);
                        break;
                }
                break;
        case SND_SOC_DAPM_POST_PMU:
                /*
                 * Add delay of 12 ms before deasserting the init
                 * to reduce the tx pop
                 */
                usleep_range(12000, 12010);
                snd_soc_component_update_bits(component, adc_reg, 1 << init_bit_shift, 0x00);
                break;
        case SND_SOC_DAPM_POST_PMD:
                switch (w->reg) {
                case CDC_A_TX_1_EN:
                        snd_soc_component_update_bits(component, CDC_D_CDC_CONN_TX1_CTL,
                                            CONN_TX1_SERIAL_TX1_MUX,
                                            CONN_TX1_SERIAL_TX1_ZERO);
                        break;
                case CDC_A_TX_2_EN:
                        snd_soc_component_update_bits(component, CDC_A_MICB_1_CTL,
                                            MICB_1_CTL_CFILT_REF_SEL_MASK, 0);
                        fallthrough;
                case CDC_A_TX_3_EN:
                        snd_soc_component_update_bits(component, CDC_D_CDC_CONN_TX2_CTL,
                                            CONN_TX2_SERIAL_TX2_MUX,
                                            CONN_TX2_SERIAL_TX2_ZERO);
                        break;
                }


                break;
        }
        return 0;
}

static int pm8916_wcd_analog_enable_spk_pa(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:
                snd_soc_component_update_bits(component, CDC_A_SPKR_PWRSTG_CTL,
                                    SPKR_PWRSTG_CTL_DAC_EN_MASK |
                                    SPKR_PWRSTG_CTL_BBM_MASK |
                                    SPKR_PWRSTG_CTL_HBRDGE_EN_MASK |
                                    SPKR_PWRSTG_CTL_CLAMP_EN_MASK,
                                    SPKR_PWRSTG_CTL_DAC_EN|
                                    SPKR_PWRSTG_CTL_BBM_EN |
                                    SPKR_PWRSTG_CTL_HBRDGE_EN |
                                    SPKR_PWRSTG_CTL_CLAMP_EN);

                snd_soc_component_update_bits(component, CDC_A_RX_EAR_CTL,
                                    RX_EAR_CTL_SPK_VBAT_LDO_EN_MASK,
                                    RX_EAR_CTL_SPK_VBAT_LDO_EN_ENABLE);
                break;
        case SND_SOC_DAPM_POST_PMU:
                snd_soc_component_update_bits(component, CDC_A_SPKR_DRV_CTL,
                                    SPKR_DRV_CTL_DEF_MASK,
                                    SPKR_DRV_CTL_DEF_VAL);
                snd_soc_component_update_bits(component, w->reg,
                                    SPKR_DRV_CLASSD_PA_EN_MASK,
                                    SPKR_DRV_CLASSD_PA_EN_ENABLE);
                break;
        case SND_SOC_DAPM_POST_PMD:
                snd_soc_component_update_bits(component, CDC_A_SPKR_PWRSTG_CTL,
                                    SPKR_PWRSTG_CTL_DAC_EN_MASK|
                                    SPKR_PWRSTG_CTL_BBM_MASK |
                                    SPKR_PWRSTG_CTL_HBRDGE_EN_MASK |
                                    SPKR_PWRSTG_CTL_CLAMP_EN_MASK, 0);

                snd_soc_component_update_bits(component, CDC_A_SPKR_DAC_CTL,
                                    SPKR_DAC_CTL_DAC_RESET_MASK,
                                    SPKR_DAC_CTL_DAC_RESET_NORMAL);
                snd_soc_component_update_bits(component, CDC_A_RX_EAR_CTL,
                                    RX_EAR_CTL_SPK_VBAT_LDO_EN_MASK, 0);
                break;
        }
        return 0;
}

static int pm8916_wcd_analog_enable_ear_pa(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:
                snd_soc_component_update_bits(component, CDC_A_RX_EAR_CTL,
                                    RX_EAR_CTL_PA_SEL_MASK, RX_EAR_CTL_PA_SEL);
                break;
        case SND_SOC_DAPM_POST_PMU:
                snd_soc_component_update_bits(component, CDC_A_RX_EAR_CTL,
                                    RX_EAR_CTL_PA_EAR_PA_EN_MASK,
                                    RX_EAR_CTL_PA_EAR_PA_EN_ENABLE);
                break;
        case SND_SOC_DAPM_POST_PMD:
                snd_soc_component_update_bits(component, CDC_A_RX_EAR_CTL,
                                    RX_EAR_CTL_PA_EAR_PA_EN_MASK, 0);
                /* Delay to reduce ear turn off pop */
                usleep_range(7000, 7100);
                snd_soc_component_update_bits(component, CDC_A_RX_EAR_CTL,
                                    RX_EAR_CTL_PA_SEL_MASK, 0);
                break;
        }
        return 0;
}

static const struct reg_default wcd_reg_defaults_2_0[] = {
        {CDC_A_RX_COM_OCP_CTL, 0xD1},
        {CDC_A_RX_COM_OCP_COUNT, 0xFF},
        {CDC_D_SEC_ACCESS, 0xA5},
        {CDC_D_PERPH_RESET_CTL3, 0x0F},
        {CDC_A_TX_1_2_OPAMP_BIAS, 0x4F},
        {CDC_A_NCP_FBCTRL, 0x28},
        {CDC_A_SPKR_DRV_CTL, 0x69},
        {CDC_A_SPKR_DRV_DBG, 0x01},
        {CDC_A_BOOST_EN_CTL, 0x5F},
        {CDC_A_SLOPE_COMP_IP_ZERO, 0x88},
        {CDC_A_SEC_ACCESS, 0xA5},
        {CDC_A_PERPH_RESET_CTL3, 0x0F},
        {CDC_A_CURRENT_LIMIT, 0x82},
        {CDC_A_SPKR_DAC_CTL, 0x03},
        {CDC_A_SPKR_OCP_CTL, 0xE1},
        {CDC_A_MASTER_BIAS_CTL, 0x30},
};

static int pm8916_wcd_analog_probe(struct snd_soc_component *component)
{
        struct pm8916_wcd_analog_priv *priv = dev_get_drvdata(component->dev);
        int err, reg;

        err = regulator_bulk_enable(ARRAY_SIZE(priv->supplies), priv->supplies);
        if (err != 0) {
                dev_err(component->dev, "failed to enable regulators (%d)\n", err);
                return err;
        }

        snd_soc_component_init_regmap(component,
                                  dev_get_regmap(component->dev->parent, NULL));
        snd_soc_component_set_drvdata(component, priv);
        priv->pmic_rev = snd_soc_component_read(component, CDC_D_REVISION1);
        priv->codec_version = snd_soc_component_read(component, CDC_D_PERPH_SUBTYPE);

        dev_info(component->dev, "PMIC REV: %d\t CODEC Version: %d\n",
                 priv->pmic_rev, priv->codec_version);

        snd_soc_component_write(component, CDC_D_PERPH_RESET_CTL4, 0x01);
        snd_soc_component_write(component, CDC_A_PERPH_RESET_CTL4, 0x01);

        for (reg = 0; reg < ARRAY_SIZE(wcd_reg_defaults_2_0); reg++)
                snd_soc_component_write(component, wcd_reg_defaults_2_0[reg].reg,
                              wcd_reg_defaults_2_0[reg].def);

        priv->component = component;

        snd_soc_component_update_bits(component, CDC_D_CDC_RST_CTL,
                            RST_CTL_DIG_SW_RST_N_MASK,
                            RST_CTL_DIG_SW_RST_N_REMOVE_RESET);

        pm8916_wcd_setup_mbhc(priv);

        return 0;
}

static void pm8916_wcd_analog_remove(struct snd_soc_component *component)
{
        struct pm8916_wcd_analog_priv *priv = dev_get_drvdata(component->dev);

        snd_soc_component_update_bits(component, CDC_D_CDC_RST_CTL,
                            RST_CTL_DIG_SW_RST_N_MASK, 0);

        regulator_bulk_disable(ARRAY_SIZE(priv->supplies),
                                      priv->supplies);
}

static const struct snd_soc_dapm_route pm8916_wcd_analog_audio_map[] = {

        {"PDM_RX1", NULL, "PDM Playback"},
        {"PDM_RX2", NULL, "PDM Playback"},
        {"PDM_RX3", NULL, "PDM Playback"},
        {"PDM Capture", NULL, "PDM_TX"},

        /* ADC Connections */
        {"PDM_TX", NULL, "ADC2"},
        {"PDM_TX", NULL, "ADC3"},
        {"ADC2", NULL, "ADC2 MUX"},
        {"ADC3", NULL, "ADC2 MUX"},
        {"ADC2 MUX", "INP2", "ADC2_INP2"},
        {"ADC2 MUX", "INP3", "ADC2_INP3"},

        {"PDM_TX", NULL, "ADC1"},
        {"ADC1", NULL, "AMIC1"},
        {"ADC2_INP2", NULL, "AMIC2"},
        {"ADC2_INP3", NULL, "AMIC3"},

        /* RDAC Connections */
        {"HPHR DAC", NULL, "RDAC2 MUX"},
        {"RDAC2 MUX", "RX1", "PDM_RX1"},
        {"RDAC2 MUX", "RX2", "PDM_RX2"},
        {"HPHL DAC", NULL, "PDM_RX1"},
        {"PDM_RX1", NULL, "RXD1_CLK"},
        {"PDM_RX2", NULL, "RXD2_CLK"},
        {"PDM_RX3", NULL, "RXD3_CLK"},

        {"PDM_RX1", NULL, "RXD_PDM_CLK"},
        {"PDM_RX2", NULL, "RXD_PDM_CLK"},
        {"PDM_RX3", NULL, "RXD_PDM_CLK"},

        {"ADC1", NULL, "TXD_CLK"},
        {"ADC2", NULL, "TXD_CLK"},
        {"ADC3", NULL, "TXD_CLK"},

        {"ADC1", NULL, "TXA_CLK25"},
        {"ADC2", NULL, "TXA_CLK25"},
        {"ADC3", NULL, "TXA_CLK25"},

        {"PDM_RX1", NULL, "A_MCLK2"},
        {"PDM_RX2", NULL, "A_MCLK2"},
        {"PDM_RX3", NULL, "A_MCLK2"},

        {"PDM_TX", NULL, "A_MCLK2"},
        {"A_MCLK2", NULL, "A_MCLK"},

        /* Earpiece (RX MIX1) */
        {"EAR", NULL, "EAR_S"},
        {"EAR_S", "Switch", "EAR PA"},
        {"EAR PA", NULL, "RX_BIAS"},
        {"EAR PA", NULL, "HPHL DAC"},
        {"EAR PA", NULL, "HPHR DAC"},
        {"EAR PA", NULL, "EAR CP"},

        /* Headset (RX MIX1 and RX MIX2) */
        {"HPH_L", NULL, "HPHL PA"},
        {"HPH_R", NULL, "HPHR PA"},

        {"HPHL DAC", NULL, "EAR_HPHL_CLK"},
        {"HPHR DAC", NULL, "EAR_HPHR_CLK"},

        {"CP", NULL, "NCP_CLK"},

        {"HPHL PA", NULL, "HPHL"},
        {"HPHR PA", NULL, "HPHR"},
        {"HPHL PA", NULL, "CP"},
        {"HPHL PA", NULL, "RX_BIAS"},
        {"HPHR PA", NULL, "CP"},
        {"HPHR PA", NULL, "RX_BIAS"},
        {"HPHL", "Switch", "HPHL DAC"},
        {"HPHR", "Switch", "HPHR DAC"},

        {"RX_BIAS", NULL, "DAC_REF"},

        {"SPK_OUT", NULL, "SPK PA"},
        {"SPK PA", NULL, "RX_BIAS"},
        {"SPK PA", NULL, "SPKR_CLK"},
        {"SPK PA", NULL, "SPK DAC"},
        {"SPK DAC", "Switch", "PDM_RX3"},

        {"MIC_BIAS1", NULL, "INT_LDO_H"},
        {"MIC_BIAS2", NULL, "INT_LDO_H"},
        {"MIC_BIAS1", NULL, "vdd-micbias"},
        {"MIC_BIAS2", NULL, "vdd-micbias"},

        {"MIC BIAS External1", NULL, "MIC_BIAS1"},
        {"MIC BIAS Internal1", NULL, "MIC_BIAS1"},
        {"MIC BIAS External2", NULL, "MIC_BIAS2"},
        {"MIC BIAS Internal2", NULL, "MIC_BIAS2"},
        {"MIC BIAS Internal3", NULL, "MIC_BIAS1"},
};

static const struct snd_soc_dapm_widget pm8916_wcd_analog_dapm_widgets[] = {

        SND_SOC_DAPM_AIF_IN("PDM_RX1", NULL, 0, SND_SOC_NOPM, 0, 0),
        SND_SOC_DAPM_AIF_IN("PDM_RX2", NULL, 0, SND_SOC_NOPM, 0, 0),
        SND_SOC_DAPM_AIF_IN("PDM_RX3", NULL, 0, SND_SOC_NOPM, 0, 0),
        SND_SOC_DAPM_AIF_OUT("PDM_TX", NULL, 0, SND_SOC_NOPM, 0, 0),

        SND_SOC_DAPM_INPUT("AMIC1"),
        SND_SOC_DAPM_INPUT("AMIC3"),
        SND_SOC_DAPM_INPUT("AMIC2"),
        SND_SOC_DAPM_OUTPUT("EAR"),
        SND_SOC_DAPM_OUTPUT("HPH_L"),
        SND_SOC_DAPM_OUTPUT("HPH_R"),

        /* RX stuff */
        SND_SOC_DAPM_SUPPLY("INT_LDO_H", SND_SOC_NOPM, 1, 0, NULL, 0),

        SND_SOC_DAPM_PGA_E("EAR PA", SND_SOC_NOPM,
                           0, 0, NULL, 0,
                           pm8916_wcd_analog_enable_ear_pa,
                           SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMU |
                           SND_SOC_DAPM_PRE_PMD | SND_SOC_DAPM_POST_PMD),
        SND_SOC_DAPM_MUX("EAR_S", SND_SOC_NOPM, 0, 0, &ear_mux),
        SND_SOC_DAPM_SUPPLY("EAR CP", CDC_A_NCP_EN, 4, 0, NULL, 0),

        SND_SOC_DAPM_PGA("HPHL PA", CDC_A_RX_HPH_CNP_EN, 5, 0, NULL, 0),
        SND_SOC_DAPM_MUX("HPHL", SND_SOC_NOPM, 0, 0, &hphl_mux),
        SND_SOC_DAPM_MIXER("HPHL DAC", CDC_A_RX_HPH_L_PA_DAC_CTL, 3, 0, NULL,
                           0),
        SND_SOC_DAPM_PGA("HPHR PA", CDC_A_RX_HPH_CNP_EN, 4, 0, NULL, 0),
        SND_SOC_DAPM_MUX("HPHR", SND_SOC_NOPM, 0, 0, &hphr_mux),
        SND_SOC_DAPM_MIXER("HPHR DAC", CDC_A_RX_HPH_R_PA_DAC_CTL, 3, 0, NULL,
                           0),
        SND_SOC_DAPM_MIXER("SPK DAC", SND_SOC_NOPM, 0, 0,
                           spkr_switch, ARRAY_SIZE(spkr_switch)),

        /* Speaker */
        SND_SOC_DAPM_OUTPUT("SPK_OUT"),
        SND_SOC_DAPM_PGA_E("SPK PA", CDC_A_SPKR_DRV_CTL,
                           6, 0, NULL, 0,
                           pm8916_wcd_analog_enable_spk_pa,
                           SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMU |
                           SND_SOC_DAPM_PRE_PMD | SND_SOC_DAPM_POST_PMD),
        SND_SOC_DAPM_REGULATOR_SUPPLY("vdd-micbias", 0, 0),
        SND_SOC_DAPM_SUPPLY("CP", CDC_A_NCP_EN, 0, 0, NULL, 0),

        SND_SOC_DAPM_SUPPLY("DAC_REF", CDC_A_RX_COM_BIAS_DAC, 0, 0, NULL, 0),
        SND_SOC_DAPM_SUPPLY("RX_BIAS", CDC_A_RX_COM_BIAS_DAC, 7, 0, NULL, 0),

        /* TX */
        SND_SOC_DAPM_SUPPLY("MIC_BIAS1", CDC_A_MICB_1_EN, 7, 0,
                            pm8916_wcd_analog_enable_micbias1,
                            SND_SOC_DAPM_POST_PMU),
        SND_SOC_DAPM_SUPPLY("MIC_BIAS2", CDC_A_MICB_2_EN, 7, 0,
                            pm8916_wcd_analog_enable_micbias2,
                            SND_SOC_DAPM_POST_PMU),

        SND_SOC_DAPM_SUPPLY("MIC BIAS External1", SND_SOC_NOPM, 0, 0, NULL, 0),
        SND_SOC_DAPM_SUPPLY("MIC BIAS External2", SND_SOC_NOPM, 0, 0, NULL, 0),

        SND_SOC_DAPM_SUPPLY("MIC BIAS Internal1", CDC_A_MICB_1_INT_RBIAS, 7, 0,
                            pm8916_wcd_analog_enable_micbias_int,
                            SND_SOC_DAPM_PRE_PMU),
        SND_SOC_DAPM_SUPPLY("MIC BIAS Internal2", CDC_A_MICB_1_INT_RBIAS, 4, 0,
                            pm8916_wcd_analog_enable_micbias_int2,
                            SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMU |
                            SND_SOC_DAPM_POST_PMD),
        SND_SOC_DAPM_SUPPLY("MIC BIAS Internal3", CDC_A_MICB_1_INT_RBIAS, 1, 0,
                            pm8916_wcd_analog_enable_micbias_int,
                            SND_SOC_DAPM_PRE_PMU),

        SND_SOC_DAPM_ADC_E("ADC1", NULL, CDC_A_TX_1_EN, 7, 0,
                           pm8916_wcd_analog_enable_adc,
                           SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMU |
                           SND_SOC_DAPM_POST_PMD),
        SND_SOC_DAPM_ADC_E("ADC2_INP2", NULL, CDC_A_TX_2_EN, 7, 0,
                           pm8916_wcd_analog_enable_adc,
                           SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMU |
                           SND_SOC_DAPM_POST_PMD),
        SND_SOC_DAPM_ADC_E("ADC2_INP3", NULL, CDC_A_TX_3_EN, 7, 0,
                           pm8916_wcd_analog_enable_adc,
                           SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMU |
                           SND_SOC_DAPM_POST_PMD),

        SND_SOC_DAPM_MIXER("ADC2", SND_SOC_NOPM, 0, 0, NULL, 0),
        SND_SOC_DAPM_MIXER("ADC3", SND_SOC_NOPM, 0, 0, NULL, 0),

        SND_SOC_DAPM_MUX("ADC2 MUX", SND_SOC_NOPM, 0, 0, &tx_adc2_mux),
        SND_SOC_DAPM_MUX("RDAC2 MUX", SND_SOC_NOPM, 0, 0, &rdac2_mux),

        /* Analog path clocks */
        SND_SOC_DAPM_SUPPLY("EAR_HPHR_CLK", CDC_D_CDC_ANA_CLK_CTL, 0, 0, NULL,
                            0),
        SND_SOC_DAPM_SUPPLY("EAR_HPHL_CLK", CDC_D_CDC_ANA_CLK_CTL, 1, 0, NULL,
                            0),
        SND_SOC_DAPM_SUPPLY("SPKR_CLK", CDC_D_CDC_ANA_CLK_CTL, 4, 0, NULL, 0),
        SND_SOC_DAPM_SUPPLY("TXA_CLK25", CDC_D_CDC_ANA_CLK_CTL, 5, 0, NULL, 0),

        /* Digital path clocks */

        SND_SOC_DAPM_SUPPLY("RXD1_CLK", CDC_D_CDC_DIG_CLK_CTL, 0, 0, NULL, 0),
        SND_SOC_DAPM_SUPPLY("RXD2_CLK", CDC_D_CDC_DIG_CLK_CTL, 1, 0, NULL, 0),
        SND_SOC_DAPM_SUPPLY("RXD3_CLK", CDC_D_CDC_DIG_CLK_CTL, 2, 0, NULL, 0),

        SND_SOC_DAPM_SUPPLY("TXD_CLK", CDC_D_CDC_DIG_CLK_CTL, 4, 0, NULL, 0),
        SND_SOC_DAPM_SUPPLY("NCP_CLK", CDC_D_CDC_DIG_CLK_CTL, 6, 0, NULL, 0),
        SND_SOC_DAPM_SUPPLY("RXD_PDM_CLK", CDC_D_CDC_DIG_CLK_CTL, 7, 0, NULL,
                            0),

        /* System Clock source */
        SND_SOC_DAPM_SUPPLY("A_MCLK", CDC_D_CDC_TOP_CLK_CTL, 2, 0, NULL, 0),
        /* TX ADC and RX DAC Clock source. */
        SND_SOC_DAPM_SUPPLY("A_MCLK2", CDC_D_CDC_TOP_CLK_CTL, 3, 0, NULL, 0),
};

static int pm8916_wcd_analog_set_jack(struct snd_soc_component *component,
                                      struct snd_soc_jack *jack,
                                      void *data)
{
        struct pm8916_wcd_analog_priv *wcd = snd_soc_component_get_drvdata(component);

        wcd->jack = jack;

        return 0;
}

static irqreturn_t mbhc_btn_release_irq_handler(int irq, void *arg)
{
        struct pm8916_wcd_analog_priv *priv = arg;

        if (priv->detect_accessory_type) {
                struct snd_soc_component *component = priv->component;
                u32 val = snd_soc_component_read(component, CDC_A_MBHC_RESULT_1);

                /* check if its BTN0 thats released */
                if ((val != -1) && !(val & CDC_A_MBHC_RESULT_1_BTN_RESULT_MASK))
                        priv->mbhc_btn0_released = true;

        } else {
                snd_soc_jack_report(priv->jack, 0, btn_mask);
        }

        return IRQ_HANDLED;
}

static irqreturn_t mbhc_btn_press_irq_handler(int irq, void *arg)
{
        struct pm8916_wcd_analog_priv *priv = arg;
        struct snd_soc_component *component = priv->component;
        u32 btn_result;

        btn_result = snd_soc_component_read(component, CDC_A_MBHC_RESULT_1) &
                                  CDC_A_MBHC_RESULT_1_BTN_RESULT_MASK;

        switch (btn_result) {
        case 0xf:
                snd_soc_jack_report(priv->jack, SND_JACK_BTN_4, btn_mask);
                break;
        case 0x7:
                snd_soc_jack_report(priv->jack, SND_JACK_BTN_3, btn_mask);
                break;
        case 0x3:
                snd_soc_jack_report(priv->jack, SND_JACK_BTN_2, btn_mask);
                break;
        case 0x1:
                snd_soc_jack_report(priv->jack, SND_JACK_BTN_1, btn_mask);
                break;
        case 0x0:
                /* handle BTN_0 specially for type detection */
                if (!priv->detect_accessory_type)
                        snd_soc_jack_report(priv->jack,
                                            SND_JACK_BTN_0, btn_mask);
                break;
        default:
                dev_err(component->dev,
                        "Unexpected button press result (%x)", btn_result);
                break;
        }

        return IRQ_HANDLED;
}

static irqreturn_t pm8916_mbhc_switch_irq_handler(int irq, void *arg)
{
        struct pm8916_wcd_analog_priv *priv = arg;
        struct snd_soc_component *component = priv->component;
        bool ins = false;

        if (snd_soc_component_read(component, CDC_A_MBHC_DET_CTL_1) &
                                CDC_A_MBHC_DET_CTL_MECH_DET_TYPE_MASK)
                ins = true;

        /* Set the detection type appropriately */
        snd_soc_component_update_bits(component, CDC_A_MBHC_DET_CTL_1,
                            CDC_A_MBHC_DET_CTL_MECH_DET_TYPE_MASK,
                            (!ins << CDC_A_MBHC_DET_CTL_MECH_DET_TYPE_SHIFT));


        if (ins) { /* hs insertion */
                bool micbias_enabled = false;

                if (snd_soc_component_read(component, CDC_A_MICB_2_EN) &
                                CDC_A_MICB_2_EN_ENABLE)
                        micbias_enabled = true;

                pm8916_mbhc_configure_bias(priv, micbias_enabled);

                /*
                 * if only a btn0 press event is receive just before
                 * insert event then its a 3 pole headphone else if
                 * both press and release event received then its
                 * a headset.
                 */
                if (priv->mbhc_btn0_released)
                        snd_soc_jack_report(priv->jack,
                                            SND_JACK_HEADSET, hs_jack_mask);
                else
                        snd_soc_jack_report(priv->jack,
                                            SND_JACK_HEADPHONE, hs_jack_mask);

                priv->detect_accessory_type = false;

        } else { /* removal */
                snd_soc_jack_report(priv->jack, 0, hs_jack_mask);
                priv->detect_accessory_type = true;
                priv->mbhc_btn0_released = false;
        }

        return IRQ_HANDLED;
}

static struct snd_soc_dai_driver pm8916_wcd_analog_dai[] = {
        [0] = {
               .name = "pm8916_wcd_analog_pdm_rx",
               .id = 0,
               .playback = {
                            .stream_name = "PDM Playback",
                            .rates = MSM8916_WCD_ANALOG_RATES,
                            .formats = MSM8916_WCD_ANALOG_FORMATS,
                            .channels_min = 1,
                            .channels_max = 3,
                            },
               },
        [1] = {
               .name = "pm8916_wcd_analog_pdm_tx",
               .id = 1,
               .capture = {
                           .stream_name = "PDM Capture",
                           .rates = MSM8916_WCD_ANALOG_RATES,
                           .formats = MSM8916_WCD_ANALOG_FORMATS,
                           .channels_min = 1,
                           .channels_max = 4,
                           },
               },
};

static const struct snd_soc_component_driver pm8916_wcd_analog = {
        .probe                  = pm8916_wcd_analog_probe,
        .remove                 = pm8916_wcd_analog_remove,
        .set_jack               = pm8916_wcd_analog_set_jack,
        .controls               = pm8916_wcd_analog_snd_controls,
        .num_controls           = ARRAY_SIZE(pm8916_wcd_analog_snd_controls),
        .dapm_widgets           = pm8916_wcd_analog_dapm_widgets,
        .num_dapm_widgets       = ARRAY_SIZE(pm8916_wcd_analog_dapm_widgets),
        .dapm_routes            = pm8916_wcd_analog_audio_map,
        .num_dapm_routes        = ARRAY_SIZE(pm8916_wcd_analog_audio_map),
        .idle_bias_on           = 1,
        .use_pmdown_time        = 1,
        .endianness             = 1,
};

static int pm8916_wcd_analog_parse_dt(struct device *dev,
                                       struct pm8916_wcd_analog_priv *priv)
{
        int rval;

        if (of_property_read_bool(dev->of_node, "qcom,micbias1-ext-cap"))
                priv->micbias1_cap_mode = MICB_1_EN_EXT_BYP_CAP;
        else
                priv->micbias1_cap_mode = MICB_1_EN_NO_EXT_BYP_CAP;

        if (of_property_read_bool(dev->of_node, "qcom,micbias2-ext-cap"))
                priv->micbias2_cap_mode = MICB_1_EN_EXT_BYP_CAP;
        else
                priv->micbias2_cap_mode = MICB_1_EN_NO_EXT_BYP_CAP;

        of_property_read_u32(dev->of_node, "qcom,micbias-lvl",
                             &priv->micbias_mv);

        if (of_property_read_bool(dev->of_node,
                                  "qcom,hphl-jack-type-normally-open"))
                priv->hphl_jack_type_normally_open = true;
        else
                priv->hphl_jack_type_normally_open = false;

        if (of_property_read_bool(dev->of_node,
                                  "qcom,gnd-jack-type-normally-open"))
                priv->gnd_jack_type_normally_open = true;
        else
                priv->gnd_jack_type_normally_open = false;

        priv->mbhc_btn_enabled = true;
        rval = of_property_read_u32_array(dev->of_node,
                                          "qcom,mbhc-vthreshold-low",
                                          &priv->vref_btn_cs[0],
                                          MBHC_MAX_BUTTONS);
        if (rval < 0) {
                priv->mbhc_btn_enabled = false;
        } else {
                rval = of_property_read_u32_array(dev->of_node,
                                                  "qcom,mbhc-vthreshold-high",
                                                  &priv->vref_btn_micb[0],
                                                  MBHC_MAX_BUTTONS);
                if (rval < 0)
                        priv->mbhc_btn_enabled = false;
        }

        if (!priv->mbhc_btn_enabled)
                dev_err(dev,
                        "DT property missing, MBHC btn detection disabled\n");


        return 0;
}

static int pm8916_wcd_analog_spmi_probe(struct platform_device *pdev)
{
        struct pm8916_wcd_analog_priv *priv;
        struct device *dev = &pdev->dev;
        int ret, i, irq;

        priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
        if (!priv)
                return -ENOMEM;

        ret = pm8916_wcd_analog_parse_dt(dev, priv);
        if (ret < 0)
                return ret;

        for (i = 0; i < ARRAY_SIZE(supply_names); i++)
                priv->supplies[i].supply = supply_names[i];

        ret = devm_regulator_bulk_get(dev, ARRAY_SIZE(priv->supplies),
                                    priv->supplies);
        if (ret) {
                dev_err(dev, "Failed to get regulator supplies %d\n", ret);
                return ret;
        }

        irq = platform_get_irq_byname(pdev, "mbhc_switch_int");
        if (irq < 0)
                return irq;

        ret = devm_request_threaded_irq(dev, irq, NULL,
                               pm8916_mbhc_switch_irq_handler,
                               IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING |
                               IRQF_ONESHOT,
                               "mbhc switch irq", priv);
        if (ret) {
                dev_err(dev, "cannot request mbhc switch irq\n");
                return ret;
        }

        if (priv->mbhc_btn_enabled) {
                irq = platform_get_irq_byname(pdev, "mbhc_but_press_det");
                if (irq < 0)
                        return irq;

                ret = devm_request_threaded_irq(dev, irq, NULL,
                                       mbhc_btn_press_irq_handler,
                                       IRQF_TRIGGER_RISING |
                                       IRQF_TRIGGER_FALLING | IRQF_ONESHOT,
                                       "mbhc btn press irq", priv);
                if (ret) {
                        dev_err(dev, "cannot request mbhc button press irq\n");
                        return ret;
                }

                irq = platform_get_irq_byname(pdev, "mbhc_but_rel_det");
                if (irq < 0)
                        return irq;

                ret = devm_request_threaded_irq(dev, irq, NULL,
                                       mbhc_btn_release_irq_handler,
                                       IRQF_TRIGGER_RISING |
                                       IRQF_TRIGGER_FALLING | IRQF_ONESHOT,
                                       "mbhc btn release irq", priv);
                if (ret) {
                        dev_err(dev, "cannot request mbhc button release irq\n");
                        return ret;
                }
        }

        dev_set_drvdata(dev, priv);

        return devm_snd_soc_register_component(dev, &pm8916_wcd_analog,
                                      pm8916_wcd_analog_dai,
                                      ARRAY_SIZE(pm8916_wcd_analog_dai));
}

static const struct of_device_id pm8916_wcd_analog_spmi_match_table[] = {
        { .compatible = "qcom,pm8916-wcd-analog-codec", },
        { }
};

MODULE_DEVICE_TABLE(of, pm8916_wcd_analog_spmi_match_table);

static struct platform_driver pm8916_wcd_analog_spmi_driver = {
        .driver = {
                   .name = "qcom,pm8916-wcd-spmi-codec",
                   .of_match_table = pm8916_wcd_analog_spmi_match_table,
        },
        .probe = pm8916_wcd_analog_spmi_probe,
};

module_platform_driver(pm8916_wcd_analog_spmi_driver);

MODULE_AUTHOR("Srinivas Kandagatla <srinivas.kandagatla@linaro.org>");
MODULE_DESCRIPTION("PMIC PM8916 WCD Analog Codec driver");
MODULE_LICENSE("GPL v2");