Quelle  tda7419.c   Sprache: C

// SPDX-License-Identifier: GPL-2.0-only
/*
 * TDA7419 audio processor driver
 *
 * Copyright 2018 Konsulko Group
 *
 * Author: Matt Porter <mporter@konsulko.com>
 */

#include <linux/i2c.h>
#include <linux/init.h>
#include <linux/module.h>
#include <linux/regmap.h>
#include <sound/core.h>
#include <sound/control.h>
#include <sound/soc.h>
#include <sound/tlv.h>

#define TDA7419_MAIN_SRC_REG  0x00
#define TDA7419_LOUDNESS_REG  0x01
#define TDA7419_MUTE_CLK_REG  0x02
#define TDA7419_VOLUME_REG  0x03
#define TDA7419_TREBLE_REG  0x04
#define TDA7419_MIDDLE_REG  0x05
#define TDA7419_BASS_REG  0x06
#define TDA7419_SECOND_SRC_REG  0x07
#define TDA7419_SUB_MID_BASS_REG 0x08
#define TDA7419_MIXING_GAIN_REG  0x09
#define TDA7419_ATTENUATOR_LF_REG 0x0a
#define TDA7419_ATTENUATOR_RF_REG 0x0b
#define TDA7419_ATTENUATOR_LR_REG 0x0c
#define TDA7419_ATTENUATOR_RR_REG 0x0d
#define TDA7419_MIXING_LEVEL_REG 0x0e
#define TDA7419_ATTENUATOR_SUB_REG 0x0f
#define TDA7419_SA_CLK_AC_REG  0x10
#define TDA7419_TESTING_REG  0x11

#define TDA7419_MAIN_SRC_SEL  0
#define TDA7419_MAIN_SRC_GAIN  3
#define TDA7419_MAIN_SRC_AUTOZERO 7

#define TDA7419_LOUDNESS_ATTEN  0
#define TDA7419_LOUDNESS_CENTER_FREQ 4
#define TDA7419_LOUDNESS_BOOST  6
#define TDA7419_LOUDNESS_SOFT_STEP 7

#define TDA7419_VOLUME_SOFT_STEP 7

#define TDA7419_SOFT_MUTE  0
#define TDA7419_MUTE_INFLUENCE  1
#define TDA7419_SOFT_MUTE_TIME  2
#define TDA7419_SOFT_STEP_TIME  4
#define TDA7419_CLK_FAST_MODE  7

#define TDA7419_TREBLE_CENTER_FREQ 5
#define TDA7419_REF_OUT_SELECT  7

#define TDA7419_MIDDLE_Q_FACTOR  5
#define TDA7419_MIDDLE_SOFT_STEP 7

#define TDA7419_BASS_Q_FACTOR  5
#define TDA7419_BASS_SOFT_STEP  7

#define TDA7419_SECOND_SRC_SEL  0
#define TDA7419_SECOND_SRC_GAIN  3
#define TDA7419_REAR_SPKR_SRC  7

#define TDA7419_SUB_CUT_OFF_FREQ 0
#define TDA7419_MIDDLE_CENTER_FREQ 2
#define TDA7419_BASS_CENTER_FREQ 4
#define TDA7419_BASS_DC_MODE  6
#define TDA7419_SMOOTHING_FILTER 7

#define TDA7419_MIX_LF   0
#define TDA7419_MIX_RF   1
#define TDA7419_MIX_ENABLE  2
#define TDA7419_SUB_ENABLE  3
#define TDA7419_HPF_GAIN  4

#define TDA7419_SA_Q_FACTOR  0
#define TDA7419_RESET_MODE  1
#define TDA7419_SA_SOURCE  2
#define TDA7419_SA_RUN   3
#define TDA7419_RESET   4
#define TDA7419_CLK_SOURCE  5
#define TDA7419_COUPLING_MODE  6

struct tda7419_data {
 struct regmap *regmap;
};

static bool tda7419_readable_reg(struct device *dev, unsigned int reg)
{
 return false;
}

static const struct reg_default tda7419_regmap_defaults[] = {
 { TDA7419_MAIN_SRC_REG, 0xfe },
 { TDA7419_LOUDNESS_REG, 0xfe },
 { TDA7419_MUTE_CLK_REG, 0xfe },
 { TDA7419_VOLUME_REG, 0xfe },
 { TDA7419_TREBLE_REG, 0xfe },
 { TDA7419_MIDDLE_REG, 0xfe },
 { TDA7419_BASS_REG, 0xfe },
 { TDA7419_SECOND_SRC_REG, 0xfe },
 { TDA7419_SUB_MID_BASS_REG, 0xfe },
 { TDA7419_MIXING_GAIN_REG, 0xfe },
 { TDA7419_ATTENUATOR_LF_REG, 0xfe },
 { TDA7419_ATTENUATOR_RF_REG, 0xfe },
 { TDA7419_ATTENUATOR_LR_REG, 0xfe },
 { TDA7419_ATTENUATOR_RR_REG, 0xfe },
 { TDA7419_MIXING_LEVEL_REG, 0xfe },
 { TDA7419_ATTENUATOR_SUB_REG, 0xfe },
 { TDA7419_SA_CLK_AC_REG, 0xfe },
 { TDA7419_TESTING_REG, 0xfe },
};

static const struct regmap_config tda7419_regmap_config = {
 .reg_bits = 8,
 .val_bits = 8,
 .max_register = TDA7419_TESTING_REG,
 .cache_type = REGCACHE_RBTREE,
 .readable_reg = tda7419_readable_reg,
 .reg_defaults = tda7419_regmap_defaults,
 .num_reg_defaults = ARRAY_SIZE(tda7419_regmap_defaults),
};

struct tda7419_vol_control {
 int min, max;
 unsigned int reg, rreg, mask, thresh;
 unsigned int invert:1;
};

static inline bool tda7419_vol_is_stereo(struct tda7419_vol_control *tvc)
{
 if (tvc->reg == tvc->rreg)
  return false;

 return true;
}

static int tda7419_vol_info(struct snd_kcontrol *kcontrol,
 struct snd_ctl_elem_info *uinfo)
{
 struct tda7419_vol_control *tvc =
  (struct tda7419_vol_control *)kcontrol->private_value;

 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
 uinfo->count = tda7419_vol_is_stereo(tvc) ? 2 : 1;
 uinfo->value.integer.min = tvc->min;
 uinfo->value.integer.max = tvc->max;

 return 0;
}

static inline int tda7419_vol_get_value(int val, unsigned int mask,
     int min, int thresh,
     unsigned int invert)
{
 val &= mask;
 if (val < thresh) {
  if (invert)
   val = 0 - val;
 } else if (val > thresh) {
  if (invert)
   val = val - thresh;
  else
   val = thresh - val;
 }

 if (val < min)
  val = min;

 return val;
}

static int tda7419_vol_get(struct snd_kcontrol *kcontrol,
      struct snd_ctl_elem_value *ucontrol)
{
 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
 struct tda7419_vol_control *tvc =
  (struct tda7419_vol_control *)kcontrol->private_value;
 unsigned int reg = tvc->reg;
 unsigned int rreg = tvc->rreg;
 unsigned int mask = tvc->mask;
 int min = tvc->min;
 int thresh = tvc->thresh;
 unsigned int invert = tvc->invert;
 int val;

 val = snd_soc_component_read(component, reg);
 ucontrol->value.integer.value[0] =
  tda7419_vol_get_value(val, mask, min, thresh, invert);

 if (tda7419_vol_is_stereo(tvc)) {
  val = snd_soc_component_read(component, rreg);
  ucontrol->value.integer.value[1] =
   tda7419_vol_get_value(val, mask, min, thresh, invert);
 }

 return 0;
}

static inline int tda7419_vol_put_value(int val, int thresh,
     unsigned int invert)
{
 if (val < 0) {
  if (invert)
   val = abs(val);
  else
   val = thresh - val;
 } else if ((val > 0) && invert) {
  val += thresh;
 }

 return val;
}

static int tda7419_vol_put(struct snd_kcontrol *kcontrol,
      struct snd_ctl_elem_value *ucontrol)
{
 struct snd_soc_component *component =
  snd_kcontrol_chip(kcontrol);
 struct tda7419_vol_control *tvc =
  (struct tda7419_vol_control *)kcontrol->private_value;
 unsigned int reg = tvc->reg;
 unsigned int rreg = tvc->rreg;
 unsigned int mask = tvc->mask;
 int thresh = tvc->thresh;
 unsigned int invert = tvc->invert;
 int val;
 int ret;

 val = tda7419_vol_put_value(ucontrol->value.integer.value[0],
        thresh, invert);
 ret = snd_soc_component_update_bits(component, reg,
         mask, val);
 if (ret < 0)
  return ret;

 if (tda7419_vol_is_stereo(tvc)) {
  val = tda7419_vol_put_value(ucontrol->value.integer.value[1],
         thresh, invert);
  ret = snd_soc_component_update_bits(component, rreg,
          mask, val);
 }

 return ret;
}

#define TDA7419_SINGLE_VALUE(xreg, xmask, xmin, xmax, xthresh, xinvert) \
 ((unsigned long)&(struct tda7419_vol_control) \
 {.reg = xreg, .rreg = xreg, .mask = xmask, .min = xmin, \
  .max = xmax, .thresh = xthresh, .invert = xinvert})

#define TDA7419_DOUBLE_R_VALUE(xregl, xregr, xmask, xmin, xmax, xthresh, \
          xinvert) \
 ((unsigned long)&(struct tda7419_vol_control) \
 {.reg = xregl, .rreg = xregr, .mask = xmask, .min = xmin, \
  .max = xmax, .thresh = xthresh, .invert = xinvert})

#define TDA7419_SINGLE_TLV(xname, xreg, xmask, xmin, xmax, xthresh, \
      xinvert, xtlv_array) \
{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, \
 .name = xname, \
 .access = SNDRV_CTL_ELEM_ACCESS_TLV_READ | \
  SNDRV_CTL_ELEM_ACCESS_READWRITE, \
 .tlv.p = (xtlv_array), \
 .info = tda7419_vol_info, \
 .get = tda7419_vol_get, \
 .put = tda7419_vol_put, \
 .private_value = TDA7419_SINGLE_VALUE(xreg, xmask, xmin, \
           xmax, xthresh, xinvert), \
}

#define TDA7419_DOUBLE_R_TLV(xname, xregl, xregr, xmask, xmin, xmax, \
        xthresh, xinvert, xtlv_array) \
{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, \
 .name = xname, \
 .access = SNDRV_CTL_ELEM_ACCESS_TLV_READ | \
  SNDRV_CTL_ELEM_ACCESS_READWRITE, \
 .tlv.p = (xtlv_array), \
 .info = tda7419_vol_info, \
 .get = tda7419_vol_get, \
 .put = tda7419_vol_put, \
 .private_value = TDA7419_DOUBLE_R_VALUE(xregl, xregr, xmask, \
      xmin, xmax, xthresh, \
      xinvert), \
}

static const char * const enum_src_sel[] = {
 "QD", "SE1", "SE2", "SE3", "SE", "Mute", "Mute", "Mute"};
static SOC_ENUM_SINGLE_DECL(soc_enum_main_src_sel,
 TDA7419_MAIN_SRC_REG, TDA7419_MAIN_SRC_SEL, enum_src_sel);
static const struct snd_kcontrol_new soc_mux_main_src_sel =
 SOC_DAPM_ENUM("Main Source Select", soc_enum_main_src_sel);
static DECLARE_TLV_DB_SCALE(tlv_src_gain, 0, 100, 0);
static DECLARE_TLV_DB_SCALE(tlv_loudness_atten, -1500, 100, 0);
static const char * const enum_loudness_center_freq[] = {
 "Flat", "400 Hz", "800 Hz", "2400 Hz"};
static SOC_ENUM_SINGLE_DECL(soc_enum_loudness_center_freq,
 TDA7419_LOUDNESS_REG, TDA7419_LOUDNESS_CENTER_FREQ,
 enum_loudness_center_freq);
static const char * const enum_mute_influence[] = {
 "Pin and IIC", "IIC"};
static SOC_ENUM_SINGLE_DECL(soc_enum_mute_influence,
 TDA7419_MUTE_CLK_REG, TDA7419_MUTE_INFLUENCE, enum_mute_influence);
static const char * const enum_soft_mute_time[] = {
 "0.48 ms", "0.96 ms", "123 ms", "123 ms"};
static SOC_ENUM_SINGLE_DECL(soc_enum_soft_mute_time,
 TDA7419_MUTE_CLK_REG, TDA7419_SOFT_MUTE_TIME, enum_soft_mute_time);
static const char * const enum_soft_step_time[] = {
 "0.160 ms", "0.321 ms", "0.642 ms", "1.28 ms",
 "2.56 ms", "5.12 ms", "10.24 ms", "20.48 ms"};
static SOC_ENUM_SINGLE_DECL(soc_enum_soft_step_time,
 TDA7419_MUTE_CLK_REG, TDA7419_SOFT_STEP_TIME, enum_soft_step_time);
static DECLARE_TLV_DB_SCALE(tlv_volume, -8000, 100, 1);
static const char * const enum_treble_center_freq[] = {
 "10.0 kHz", "12.5 kHz", "15.0 kHz", "17.5 kHz"};
static DECLARE_TLV_DB_SCALE(tlv_filter, -1500, 100, 0);
static SOC_ENUM_SINGLE_DECL(soc_enum_treble_center_freq,
 TDA7419_TREBLE_REG, TDA7419_TREBLE_CENTER_FREQ,
 enum_treble_center_freq);
static const char * const enum_ref_out_select[] = {
 "External Vref (4 V)", "Internal Vref (3.3 V)"};
static SOC_ENUM_SINGLE_DECL(soc_enum_ref_out_select,
 TDA7419_TREBLE_REG, TDA7419_REF_OUT_SELECT, enum_ref_out_select);
static const char * const enum_middle_q_factor[] = {
 "0.5", "0.75", "1.0", "1.25"};
static SOC_ENUM_SINGLE_DECL(soc_enum_middle_q_factor,
 TDA7419_MIDDLE_REG, TDA7419_MIDDLE_Q_FACTOR, enum_middle_q_factor);
static const char * const enum_bass_q_factor[] = {
 "1.0", "1.25", "1.5", "2.0"};
static SOC_ENUM_SINGLE_DECL(soc_enum_bass_q_factor,
 TDA7419_BASS_REG, TDA7419_BASS_Q_FACTOR, enum_bass_q_factor);
static SOC_ENUM_SINGLE_DECL(soc_enum_second_src_sel,
 TDA7419_SECOND_SRC_REG, TDA7419_SECOND_SRC_SEL, enum_src_sel);
static const struct snd_kcontrol_new soc_mux_second_src_sel =
 SOC_DAPM_ENUM("Second Source Select", soc_enum_second_src_sel);
static const char * const enum_rear_spkr_src[] = {
 "Main", "Second"};
static SOC_ENUM_SINGLE_DECL(soc_enum_rear_spkr_src,
 TDA7419_SECOND_SRC_REG, TDA7419_REAR_SPKR_SRC, enum_rear_spkr_src);
static const struct snd_kcontrol_new soc_mux_rear_spkr_src =
 SOC_DAPM_ENUM("Rear Speaker Source", soc_enum_rear_spkr_src);
static const char * const enum_sub_cut_off_freq[] = {
 "Flat", "80 Hz", "120 Hz", "160 Hz"};
static SOC_ENUM_SINGLE_DECL(soc_enum_sub_cut_off_freq,
 TDA7419_SUB_MID_BASS_REG, TDA7419_SUB_CUT_OFF_FREQ,
 enum_sub_cut_off_freq);
static const char * const enum_middle_center_freq[] = {
 "500 Hz", "1000 Hz", "1500 Hz", "2500 Hz"};
static SOC_ENUM_SINGLE_DECL(soc_enum_middle_center_freq,
 TDA7419_SUB_MID_BASS_REG, TDA7419_MIDDLE_CENTER_FREQ,
 enum_middle_center_freq);
static const char * const enum_bass_center_freq[] = {
 "60 Hz", "80 Hz", "100 Hz", "200 Hz"};
static SOC_ENUM_SINGLE_DECL(soc_enum_bass_center_freq,
 TDA7419_SUB_MID_BASS_REG, TDA7419_BASS_CENTER_FREQ,
 enum_bass_center_freq);
static const char * const enum_sa_q_factor[] = {
 "3.5", "1.75" };
static SOC_ENUM_SINGLE_DECL(soc_enum_sa_q_factor,
 TDA7419_SA_CLK_AC_REG, TDA7419_SA_Q_FACTOR, enum_sa_q_factor);
static const char * const enum_reset_mode[] = {
 "IIC", "Auto" };
static SOC_ENUM_SINGLE_DECL(soc_enum_reset_mode,
 TDA7419_SA_CLK_AC_REG, TDA7419_RESET_MODE, enum_reset_mode);
static const char * const enum_sa_src[] = {
 "Bass", "In Gain" };
static SOC_ENUM_SINGLE_DECL(soc_enum_sa_src,
 TDA7419_SA_CLK_AC_REG, TDA7419_SA_SOURCE, enum_sa_src);
static const char * const enum_clk_src[] = {
 "Internal", "External" };
static SOC_ENUM_SINGLE_DECL(soc_enum_clk_src,
 TDA7419_SA_CLK_AC_REG, TDA7419_CLK_SOURCE, enum_clk_src);
static const char * const enum_coupling_mode[] = {
 "DC Coupling (without HPF)", "AC Coupling after In Gain",
 "DC Coupling (with HPF)", "AC Coupling after Bass" };
static SOC_ENUM_SINGLE_DECL(soc_enum_coupling_mode,
 TDA7419_SA_CLK_AC_REG, TDA7419_COUPLING_MODE, enum_coupling_mode);

/* ASoC Controls */
static struct snd_kcontrol_new tda7419_controls[] = {
SOC_SINGLE_TLV("Main Source Capture Volume", TDA7419_MAIN_SRC_REG,
        TDA7419_MAIN_SRC_GAIN, 15, 0, tlv_src_gain),
SOC_SINGLE("Main Source AutoZero Switch", TDA7419_MAIN_SRC_REG,
    TDA7419_MAIN_SRC_AUTOZERO, 1, 1),
SOC_SINGLE_TLV("Loudness Playback Volume", TDA7419_LOUDNESS_REG,
        TDA7419_LOUDNESS_ATTEN, 15, 1, tlv_loudness_atten),
SOC_ENUM("Loudness Center Frequency", soc_enum_loudness_center_freq),
SOC_SINGLE("Loudness High Boost Switch", TDA7419_LOUDNESS_REG,
    TDA7419_LOUDNESS_BOOST, 1, 1),
SOC_SINGLE("Loudness Soft Step Switch", TDA7419_LOUDNESS_REG,
    TDA7419_LOUDNESS_SOFT_STEP, 1, 1),
SOC_SINGLE("Soft Mute Switch", TDA7419_MUTE_CLK_REG, TDA7419_SOFT_MUTE, 1, 1),
SOC_ENUM("Mute Influence", soc_enum_mute_influence),
SOC_ENUM("Soft Mute Time", soc_enum_soft_mute_time),
SOC_ENUM("Soft Step Time", soc_enum_soft_step_time),
SOC_SINGLE("Clock Fast Mode Switch", TDA7419_MUTE_CLK_REG,
    TDA7419_CLK_FAST_MODE, 1, 1),
TDA7419_SINGLE_TLV("Master Playback Volume", TDA7419_VOLUME_REG,
     0x7f, -80, 15, 0x10, 0, tlv_volume),
SOC_SINGLE("Volume Soft Step Switch", TDA7419_VOLUME_REG,
    TDA7419_VOLUME_SOFT_STEP, 1, 1),
TDA7419_SINGLE_TLV("Treble Playback Volume", TDA7419_TREBLE_REG,
     0x1f, -15, 15, 0x10, 1, tlv_filter),
SOC_ENUM("Treble Center Frequency", soc_enum_treble_center_freq),
SOC_ENUM("Reference Output Select", soc_enum_ref_out_select),
TDA7419_SINGLE_TLV("Middle Playback Volume", TDA7419_MIDDLE_REG,
     0x1f, -15, 15, 0x10, 1, tlv_filter),
SOC_ENUM("Middle Q Factor", soc_enum_middle_q_factor),
SOC_SINGLE("Middle Soft Step Switch", TDA7419_MIDDLE_REG,
    TDA7419_MIDDLE_SOFT_STEP, 1, 1),
TDA7419_SINGLE_TLV("Bass Playback Volume", TDA7419_BASS_REG,
     0x1f, -15, 15, 0x10, 1, tlv_filter),
SOC_ENUM("Bass Q Factor", soc_enum_bass_q_factor),
SOC_SINGLE("Bass Soft Step Switch", TDA7419_BASS_REG,
    TDA7419_BASS_SOFT_STEP, 1, 1),
SOC_SINGLE_TLV("Second Source Capture Volume", TDA7419_SECOND_SRC_REG,
        TDA7419_SECOND_SRC_GAIN, 15, 0, tlv_src_gain),
SOC_ENUM("Subwoofer Cut-off Frequency", soc_enum_sub_cut_off_freq),
SOC_ENUM("Middle Center Frequency", soc_enum_middle_center_freq),
SOC_ENUM("Bass Center Frequency", soc_enum_bass_center_freq),
SOC_SINGLE("Bass DC Mode Switch", TDA7419_SUB_MID_BASS_REG,
    TDA7419_BASS_DC_MODE, 1, 1),
SOC_SINGLE("Smoothing Filter Switch", TDA7419_SUB_MID_BASS_REG,
    TDA7419_SMOOTHING_FILTER, 1, 1),
TDA7419_DOUBLE_R_TLV("Front Speaker Playback Volume", TDA7419_ATTENUATOR_LF_REG,
       TDA7419_ATTENUATOR_RF_REG, 0x7f, -80, 15, 0x10, 0,
       tlv_volume),
SOC_SINGLE("Left Front Soft Step Switch", TDA7419_ATTENUATOR_LF_REG,
    TDA7419_VOLUME_SOFT_STEP, 1, 1),
SOC_SINGLE("Right Front Soft Step Switch", TDA7419_ATTENUATOR_RF_REG,
    TDA7419_VOLUME_SOFT_STEP, 1, 1),
TDA7419_DOUBLE_R_TLV("Rear Speaker Playback Volume", TDA7419_ATTENUATOR_LR_REG,
       TDA7419_ATTENUATOR_RR_REG, 0x7f, -80, 15, 0x10, 0,
       tlv_volume),
SOC_SINGLE("Left Rear Soft Step Switch", TDA7419_ATTENUATOR_LR_REG,
    TDA7419_VOLUME_SOFT_STEP, 1, 1),
SOC_SINGLE("Right Rear Soft Step Switch", TDA7419_ATTENUATOR_RR_REG,
    TDA7419_VOLUME_SOFT_STEP, 1, 1),
TDA7419_SINGLE_TLV("Mixing Capture Volume", TDA7419_MIXING_LEVEL_REG,
     0x7f, -80, 15, 0x10, 0, tlv_volume),
SOC_SINGLE("Mixing Level Soft Step Switch", TDA7419_MIXING_LEVEL_REG,
    TDA7419_VOLUME_SOFT_STEP, 1, 1),
TDA7419_SINGLE_TLV("Subwoofer Playback Volume", TDA7419_ATTENUATOR_SUB_REG,
     0x7f, -80, 15, 0x10, 0, tlv_volume),
SOC_SINGLE("Subwoofer Soft Step Switch", TDA7419_ATTENUATOR_SUB_REG,
    TDA7419_VOLUME_SOFT_STEP, 1, 1),
SOC_ENUM("Spectrum Analyzer Q Factor", soc_enum_sa_q_factor),
SOC_ENUM("Spectrum Analyzer Reset Mode", soc_enum_reset_mode),
SOC_ENUM("Spectrum Analyzer Source", soc_enum_sa_src),
SOC_SINGLE("Spectrum Analyzer Run Switch", TDA7419_SA_CLK_AC_REG,
    TDA7419_SA_RUN, 1, 1),
SOC_SINGLE("Spectrum Analyzer Reset Switch", TDA7419_SA_CLK_AC_REG,
    TDA7419_RESET, 1, 1),
SOC_ENUM("Clock Source", soc_enum_clk_src),
SOC_ENUM("Coupling Mode", soc_enum_coupling_mode),
};

static const struct snd_kcontrol_new soc_mixer_lf_output_controls[] = {
 SOC_DAPM_SINGLE("Mix to LF Speaker Switch",
   TDA7419_MIXING_GAIN_REG,
   TDA7419_MIX_LF, 1, 1),
};

static const struct snd_kcontrol_new soc_mixer_rf_output_controls[] = {
 SOC_DAPM_SINGLE("Mix to RF Speaker Switch",
   TDA7419_MIXING_GAIN_REG,
   TDA7419_MIX_RF, 1, 1),
};

static const struct snd_kcontrol_new soc_mix_enable_switch_controls[] = {
 SOC_DAPM_SINGLE("Switch", TDA7419_MIXING_GAIN_REG,
   TDA7419_MIX_ENABLE, 1, 1),
};

static const struct snd_kcontrol_new soc_sub_enable_switch_controls[] = {
 SOC_DAPM_SINGLE("Switch", TDA7419_MIXING_GAIN_REG,
   TDA7419_MIX_ENABLE, 1, 1),
};

static const struct snd_soc_dapm_widget tda7419_dapm_widgets[] = {
 SND_SOC_DAPM_INPUT("SE3L"),
 SND_SOC_DAPM_INPUT("SE3R"),
 SND_SOC_DAPM_INPUT("SE2L"),
 SND_SOC_DAPM_INPUT("SE2R"),
 SND_SOC_DAPM_INPUT("SE1L"),
 SND_SOC_DAPM_INPUT("SE1R"),
 SND_SOC_DAPM_INPUT("DIFFL"),
 SND_SOC_DAPM_INPUT("DIFFR"),
 SND_SOC_DAPM_INPUT("MIX"),

 SND_SOC_DAPM_MUX("Main Source Select", SND_SOC_NOPM,
    0, 0, &soc_mux_main_src_sel),
 SND_SOC_DAPM_MUX("Second Source Select", SND_SOC_NOPM,
    0, 0, &soc_mux_second_src_sel),
 SND_SOC_DAPM_MUX("Rear Speaker Source", SND_SOC_NOPM,
    0, 0, &soc_mux_rear_spkr_src),

 SND_SOC_DAPM_SWITCH("Mix Enable", SND_SOC_NOPM,
   0, 0, &soc_mix_enable_switch_controls[0]),
 SND_SOC_DAPM_MIXER_NAMED_CTL("LF Output Mixer", SND_SOC_NOPM,
   0, 0, &soc_mixer_lf_output_controls[0],
   ARRAY_SIZE(soc_mixer_lf_output_controls)),
 SND_SOC_DAPM_MIXER_NAMED_CTL("RF Output Mixer", SND_SOC_NOPM,
   0, 0, &soc_mixer_rf_output_controls[0],
   ARRAY_SIZE(soc_mixer_rf_output_controls)),

 SND_SOC_DAPM_SWITCH("Subwoofer Enable",
   SND_SOC_NOPM, 0, 0,
   &soc_sub_enable_switch_controls[0]),

 SND_SOC_DAPM_OUTPUT("OUTLF"),
 SND_SOC_DAPM_OUTPUT("OUTRF"),
 SND_SOC_DAPM_OUTPUT("OUTLR"),
 SND_SOC_DAPM_OUTPUT("OUTRR"),
 SND_SOC_DAPM_OUTPUT("OUTSW"),
};

static const struct snd_soc_dapm_route tda7419_dapm_routes[] = {
 {"Main Source Select", "SE3", "SE3L"},
 {"Main Source Select", "SE3", "SE3R"},
 {"Main Source Select", "SE2", "SE2L"},
 {"Main Source Select", "SE2", "SE2R"},
 {"Main Source Select", "SE1", "SE1L"},
 {"Main Source Select", "SE1", "SE1R"},
 {"Main Source Select", "SE", "DIFFL"},
 {"Main Source Select", "SE", "DIFFR"},
 {"Main Source Select", "QD", "DIFFL"},
 {"Main Source Select", "QD", "DIFFR"},

 {"Second Source Select", "SE3", "SE3L"},
 {"Second Source Select", "SE3", "SE3R"},
 {"Second Source Select", "SE2", "SE2L"},
 {"Second Source Select", "SE2", "SE2R"},
 {"Second Source Select", "SE1", "SE1L"},
 {"Second Source Select", "SE1", "SE1R"},
 {"Second Source Select", "SE", "DIFFL"},
 {"Second Source Select", "SE", "DIFFR"},
 {"Second Source Select", "QD", "DIFFL"},
 {"Second Source Select", "QD", "DIFFR"},

 {"Rear Speaker Source", "Main", "Main Source Select"},
 {"Rear Speaker Source", "Second", "Second Source Select"},

 {"Subwoofer Enable", "Switch", "Main Source Select"},

 {"Mix Enable", "Switch", "MIX"},

 {"LF Output Mixer", NULL, "Main Source Select"},
 {"LF Output Mixer", "Mix to LF Speaker Switch", "Mix Enable"},
 {"RF Output Mixer", NULL, "Main Source Select"},
 {"RF Output Mixer", "Mix to RF Speaker Switch", "Mix Enable"},

 {"OUTLF", NULL, "LF Output Mixer"},
 {"OUTRF", NULL, "RF Output Mixer"},
 {"OUTLR", NULL, "Rear Speaker Source"},
 {"OUTRR", NULL, "Rear Speaker Source"},
 {"OUTSW", NULL, "Subwoofer Enable"},
};

static const struct snd_soc_component_driver tda7419_component_driver = {
 .name   = "tda7419",
 .controls  = tda7419_controls,
 .num_controls  = ARRAY_SIZE(tda7419_controls),
 .dapm_widgets  = tda7419_dapm_widgets,
 .num_dapm_widgets = ARRAY_SIZE(tda7419_dapm_widgets),
 .dapm_routes  = tda7419_dapm_routes,
 .num_dapm_routes = ARRAY_SIZE(tda7419_dapm_routes),
};

static int tda7419_probe(struct i2c_client *i2c)
{
 struct tda7419_data *tda7419;
 int i, ret;

 tda7419 = devm_kzalloc(&i2c->dev,
          sizeof(struct tda7419_data),
          GFP_KERNEL);
 if (tda7419 == NULL)
  return -ENOMEM;

 i2c_set_clientdata(i2c, tda7419);

 tda7419->regmap = devm_regmap_init_i2c(i2c, &tda7419_regmap_config);
 if (IS_ERR(tda7419->regmap)) {
  ret = PTR_ERR(tda7419->regmap);
  dev_err(&i2c->dev, "error initializing regmap: %d\n",
    ret);
  return ret;
 }

 /*
 * Reset registers to power-on defaults. The part does not provide a
 * soft-reset function and the registers are not readable. This ensures
 * that the cache matches register contents even if the registers have
 * been previously initialized and not power cycled before probe.
 */
 for (i = 0; i < ARRAY_SIZE(tda7419_regmap_defaults); i++)
  regmap_write(tda7419->regmap,
        tda7419_regmap_defaults[i].reg,
        tda7419_regmap_defaults[i].def);

 ret = devm_snd_soc_register_component(&i2c->dev,
  &tda7419_component_driver, NULL, 0);
 if (ret < 0) {
  dev_err(&i2c->dev, "error registering component: %d\n",
    ret);
 }

 return ret;
}

static const struct i2c_device_id tda7419_i2c_id[] = {
 { "tda7419" },
 { }
};
MODULE_DEVICE_TABLE(i2c, tda7419_i2c_id);

static const struct of_device_id tda7419_of_match[] = {
 { .compatible = "st,tda7419" },
 { },
};
MODULE_DEVICE_TABLE(of, tda7419_of_match);

static struct i2c_driver tda7419_driver = {
 .driver = {
  .name   = "tda7419",
  .of_match_table = tda7419_of_match,
 },
 .probe          = tda7419_probe,
 .id_table       = tda7419_i2c_id,
};

module_i2c_driver(tda7419_driver);

MODULE_AUTHOR("Matt Porter ");
MODULE_DESCRIPTION("TDA7419 audio processor driver");
MODULE_LICENSE("GPL");