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wm8991.c

/*
 * wm8991.c  --  WM8991 ALSA Soc Audio driver
 *
 * Copyright 2007-2010 Wolfson Microelectronics PLC.
 * Author: Graeme Gregory
 *         linux@wolfsonmicro.com
 *
 *  This program is free software; you can redistribute  it and/or modify it
 *  under  the terms of  the GNU General  Public License as published by the
 *  Free Software Foundation;  either version 2 of the  License, or (at your
 *  option) any later version.
 */

#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/version.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/delay.h>
#include <linux/pm.h>
#include <linux/i2c.h>
#include <linux/platform_device.h>
#include <linux/slab.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
#include <sound/soc.h>
#include <sound/soc-dapm.h>
#include <sound/initval.h>
#include <sound/tlv.h>
#include <asm/div64.h>

#include "wm8991.h"

00035 struct wm8991_priv {
      enum snd_soc_control_type control_type;
      unsigned int pcmclk;
};

static const u16 wm8991_reg_defs[] = {
      0x8991,     /* R0  - Reset */
      0x0000,     /* R1  - Power Management (1) */
      0x6000,     /* R2  - Power Management (2) */
      0x0000,     /* R3  - Power Management (3) */
      0x4050,     /* R4  - Audio Interface (1) */
      0x4000,     /* R5  - Audio Interface (2) */
      0x01C8,     /* R6  - Clocking (1) */
      0x0000,     /* R7  - Clocking (2) */
      0x0040,     /* R8  - Audio Interface (3) */
      0x0040,     /* R9  - Audio Interface (4) */
      0x0004,     /* R10 - DAC CTRL */
      0x00C0,     /* R11 - Left DAC Digital Volume */
      0x00C0,     /* R12 - Right DAC Digital Volume */
      0x0000,     /* R13 - Digital Side Tone */
      0x0100,     /* R14 - ADC CTRL */
      0x00C0,     /* R15 - Left ADC Digital Volume */
      0x00C0,     /* R16 - Right ADC Digital Volume */
      0x0000,     /* R17 */
      0x0000,     /* R18 - GPIO CTRL 1 */
      0x1000,     /* R19 - GPIO1 & GPIO2 */
      0x1010,     /* R20 - GPIO3 & GPIO4 */
      0x1010,     /* R21 - GPIO5 & GPIO6 */
      0x8000,     /* R22 - GPIOCTRL 2 */
      0x0800,     /* R23 - GPIO_POL */
      0x008B,     /* R24 - Left Line Input 1&2 Volume */
      0x008B,     /* R25 - Left Line Input 3&4 Volume */
      0x008B,     /* R26 - Right Line Input 1&2 Volume */
      0x008B,     /* R27 - Right Line Input 3&4 Volume */
      0x0000,     /* R28 - Left Output Volume */
      0x0000,     /* R29 - Right Output Volume */
      0x0066,     /* R30 - Line Outputs Volume */
      0x0022,     /* R31 - Out3/4 Volume */
      0x0079,     /* R32 - Left OPGA Volume */
      0x0079,     /* R33 - Right OPGA Volume */
      0x0003,     /* R34 - Speaker Volume */
      0x0003,     /* R35 - ClassD1 */
      0x0000,     /* R36 */
      0x0100,     /* R37 - ClassD3 */
      0x0000,     /* R38 */
      0x0000,     /* R39 - Input Mixer1 */
      0x0000,     /* R40 - Input Mixer2 */
      0x0000,     /* R41 - Input Mixer3 */
      0x0000,     /* R42 - Input Mixer4 */
      0x0000,     /* R43 - Input Mixer5 */
      0x0000,     /* R44 - Input Mixer6 */
      0x0000,     /* R45 - Output Mixer1 */
      0x0000,     /* R46 - Output Mixer2 */
      0x0000,     /* R47 - Output Mixer3 */
      0x0000,     /* R48 - Output Mixer4 */
      0x0000,     /* R49 - Output Mixer5 */
      0x0000,     /* R50 - Output Mixer6 */
      0x0180,     /* R51 - Out3/4 Mixer */
      0x0000,     /* R52 - Line Mixer1 */
      0x0000,     /* R53 - Line Mixer2 */
      0x0000,     /* R54 - Speaker Mixer */
      0x0000,     /* R55 - Additional Control */
      0x0000,     /* R56 - AntiPOP1 */
      0x0000,     /* R57 - AntiPOP2 */
      0x0000,     /* R58 - MICBIAS */
      0x0000,     /* R59 */
      0x0008,     /* R60 - PLL1 */
      0x0031,     /* R61 - PLL2 */
      0x0026,     /* R62 - PLL3 */
};

#define wm8991_reset(c) snd_soc_write(c, WM8991_RESET, 0)

static const unsigned int rec_mix_tlv[] = {
      TLV_DB_RANGE_HEAD(1),
      0, 7, TLV_DB_LINEAR_ITEM(-1500, 600),
};

static const unsigned int in_pga_tlv[] = {
      TLV_DB_RANGE_HEAD(1),
      0, 0x1F, TLV_DB_LINEAR_ITEM(-1650, 3000),
};

static const unsigned int out_mix_tlv[] = {
      TLV_DB_RANGE_HEAD(1),
      0, 7, TLV_DB_LINEAR_ITEM(0, -2100),
};

static const unsigned int out_pga_tlv[] = {
      TLV_DB_RANGE_HEAD(1),
      0, 127, TLV_DB_LINEAR_ITEM(-7300, 600),
};

static const unsigned int out_omix_tlv[] = {
      TLV_DB_RANGE_HEAD(1),
      0, 7, TLV_DB_LINEAR_ITEM(-600, 0),
};

static const unsigned int out_dac_tlv[] = {
      TLV_DB_RANGE_HEAD(1),
      0, 255, TLV_DB_LINEAR_ITEM(-7163, 0),
};

static const unsigned int in_adc_tlv[] = {
      TLV_DB_RANGE_HEAD(1),
      0, 255, TLV_DB_LINEAR_ITEM(-7163, 1763),
};

static const unsigned int out_sidetone_tlv[] = {
      TLV_DB_RANGE_HEAD(1),
      0, 31, TLV_DB_LINEAR_ITEM(-3600, 0),
};

static int wm899x_outpga_put_volsw_vu(struct snd_kcontrol *kcontrol,
                              struct snd_ctl_elem_value *ucontrol)
{
      struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
      int reg = kcontrol->private_value & 0xff;
      int ret;
      u16 val;

      ret = snd_soc_put_volsw(kcontrol, ucontrol);
      if (ret < 0)
            return ret;

      /* now hit the volume update bits (always bit 8) */
      val = snd_soc_read(codec, reg);
      return snd_soc_write(codec, reg, val | 0x0100);
}

static const char *wm8991_digital_sidetone[] =
{"None", "Left ADC", "Right ADC", "Reserved"};

static const struct soc_enum wm8991_left_digital_sidetone_enum =
      SOC_ENUM_SINGLE(WM8991_DIGITAL_SIDE_TONE,
                  WM8991_ADC_TO_DACL_SHIFT,
                  WM8991_ADC_TO_DACL_MASK,
                  wm8991_digital_sidetone);

static const struct soc_enum wm8991_right_digital_sidetone_enum =
      SOC_ENUM_SINGLE(WM8991_DIGITAL_SIDE_TONE,
                  WM8991_ADC_TO_DACR_SHIFT,
                  WM8991_ADC_TO_DACR_MASK,
                  wm8991_digital_sidetone);

static const char *wm8991_adcmode[] =
{"Hi-fi mode", "Voice mode 1", "Voice mode 2", "Voice mode 3"};

static const struct soc_enum wm8991_right_adcmode_enum =
      SOC_ENUM_SINGLE(WM8991_ADC_CTRL,
                  WM8991_ADC_HPF_CUT_SHIFT,
                  WM8991_ADC_HPF_CUT_MASK,
                  wm8991_adcmode);

static const struct snd_kcontrol_new wm8991_snd_controls[] = {
      /* INMIXL */
      SOC_SINGLE("LIN12 PGA Boost", WM8991_INPUT_MIXER3, WM8991_L12MNBST_BIT, 1, 0),
      SOC_SINGLE("LIN34 PGA Boost", WM8991_INPUT_MIXER3, WM8991_L34MNBST_BIT, 1, 0),
      /* INMIXR */
      SOC_SINGLE("RIN12 PGA Boost", WM8991_INPUT_MIXER3, WM8991_R12MNBST_BIT, 1, 0),
      SOC_SINGLE("RIN34 PGA Boost", WM8991_INPUT_MIXER3, WM8991_R34MNBST_BIT, 1, 0),

      /* LOMIX */
      SOC_SINGLE_TLV("LOMIX LIN3 Bypass Volume", WM8991_OUTPUT_MIXER3,
            WM8991_LLI3LOVOL_SHIFT, WM8991_LLI3LOVOL_MASK, 1, out_mix_tlv),
      SOC_SINGLE_TLV("LOMIX RIN12 PGA Bypass Volume", WM8991_OUTPUT_MIXER3,
            WM8991_LR12LOVOL_SHIFT, WM8991_LR12LOVOL_MASK, 1, out_mix_tlv),
      SOC_SINGLE_TLV("LOMIX LIN12 PGA Bypass Volume", WM8991_OUTPUT_MIXER3,
            WM8991_LL12LOVOL_SHIFT, WM8991_LL12LOVOL_MASK, 1, out_mix_tlv),
      SOC_SINGLE_TLV("LOMIX RIN3 Bypass Volume", WM8991_OUTPUT_MIXER5,
            WM8991_LRI3LOVOL_SHIFT, WM8991_LRI3LOVOL_MASK, 1, out_mix_tlv),
      SOC_SINGLE_TLV("LOMIX AINRMUX Bypass Volume", WM8991_OUTPUT_MIXER5,
            WM8991_LRBLOVOL_SHIFT, WM8991_LRBLOVOL_MASK, 1, out_mix_tlv),
      SOC_SINGLE_TLV("LOMIX AINLMUX Bypass Volume", WM8991_OUTPUT_MIXER5,
            WM8991_LRBLOVOL_SHIFT, WM8991_LRBLOVOL_MASK, 1, out_mix_tlv),

      /* ROMIX */
      SOC_SINGLE_TLV("ROMIX RIN3 Bypass Volume", WM8991_OUTPUT_MIXER4,
            WM8991_RRI3ROVOL_SHIFT, WM8991_RRI3ROVOL_MASK, 1, out_mix_tlv),
      SOC_SINGLE_TLV("ROMIX LIN12 PGA Bypass Volume", WM8991_OUTPUT_MIXER4,
            WM8991_RL12ROVOL_SHIFT, WM8991_RL12ROVOL_MASK, 1, out_mix_tlv),
      SOC_SINGLE_TLV("ROMIX RIN12 PGA Bypass Volume", WM8991_OUTPUT_MIXER4,
            WM8991_RR12ROVOL_SHIFT, WM8991_RR12ROVOL_MASK, 1, out_mix_tlv),
      SOC_SINGLE_TLV("ROMIX LIN3 Bypass Volume", WM8991_OUTPUT_MIXER6,
            WM8991_RLI3ROVOL_SHIFT, WM8991_RLI3ROVOL_MASK, 1, out_mix_tlv),
      SOC_SINGLE_TLV("ROMIX AINLMUX Bypass Volume", WM8991_OUTPUT_MIXER6,
            WM8991_RLBROVOL_SHIFT, WM8991_RLBROVOL_MASK, 1, out_mix_tlv),
      SOC_SINGLE_TLV("ROMIX AINRMUX Bypass Volume", WM8991_OUTPUT_MIXER6,
            WM8991_RRBROVOL_SHIFT, WM8991_RRBROVOL_MASK, 1, out_mix_tlv),

      /* LOUT */
      SOC_WM899X_OUTPGA_SINGLE_R_TLV("LOUT Volume", WM8991_LEFT_OUTPUT_VOLUME,
            WM8991_LOUTVOL_SHIFT, WM8991_LOUTVOL_MASK, 0, out_pga_tlv),
      SOC_SINGLE("LOUT ZC", WM8991_LEFT_OUTPUT_VOLUME, WM8991_LOZC_BIT, 1, 0),

      /* ROUT */
      SOC_WM899X_OUTPGA_SINGLE_R_TLV("ROUT Volume", WM8991_RIGHT_OUTPUT_VOLUME,
            WM8991_ROUTVOL_SHIFT, WM8991_ROUTVOL_MASK, 0, out_pga_tlv),
      SOC_SINGLE("ROUT ZC", WM8991_RIGHT_OUTPUT_VOLUME, WM8991_ROZC_BIT, 1, 0),

      /* LOPGA */
      SOC_WM899X_OUTPGA_SINGLE_R_TLV("LOPGA Volume", WM8991_LEFT_OPGA_VOLUME,
            WM8991_LOPGAVOL_SHIFT, WM8991_LOPGAVOL_MASK, 0, out_pga_tlv),
      SOC_SINGLE("LOPGA ZC Switch", WM8991_LEFT_OPGA_VOLUME,
            WM8991_LOPGAZC_BIT, 1, 0),

      /* ROPGA */
      SOC_WM899X_OUTPGA_SINGLE_R_TLV("ROPGA Volume", WM8991_RIGHT_OPGA_VOLUME,
            WM8991_ROPGAVOL_SHIFT, WM8991_ROPGAVOL_MASK, 0, out_pga_tlv),
      SOC_SINGLE("ROPGA ZC Switch", WM8991_RIGHT_OPGA_VOLUME,
            WM8991_ROPGAZC_BIT, 1, 0),

      SOC_SINGLE("LON Mute Switch", WM8991_LINE_OUTPUTS_VOLUME,
            WM8991_LONMUTE_BIT, 1, 0),
      SOC_SINGLE("LOP Mute Switch", WM8991_LINE_OUTPUTS_VOLUME,
            WM8991_LOPMUTE_BIT, 1, 0),
      SOC_SINGLE("LOP Attenuation Switch", WM8991_LINE_OUTPUTS_VOLUME,
            WM8991_LOATTN_BIT, 1, 0),
      SOC_SINGLE("RON Mute Switch", WM8991_LINE_OUTPUTS_VOLUME,
            WM8991_RONMUTE_BIT, 1, 0),
      SOC_SINGLE("ROP Mute Switch", WM8991_LINE_OUTPUTS_VOLUME,
            WM8991_ROPMUTE_BIT, 1, 0),
      SOC_SINGLE("ROP Attenuation Switch", WM8991_LINE_OUTPUTS_VOLUME,
            WM8991_ROATTN_BIT, 1, 0),

      SOC_SINGLE("OUT3 Mute Switch", WM8991_OUT3_4_VOLUME,
            WM8991_OUT3MUTE_BIT, 1, 0),
      SOC_SINGLE("OUT3 Attenuation Switch", WM8991_OUT3_4_VOLUME,
            WM8991_OUT3ATTN_BIT, 1, 0),

      SOC_SINGLE("OUT4 Mute Switch", WM8991_OUT3_4_VOLUME,
            WM8991_OUT4MUTE_BIT, 1, 0),
      SOC_SINGLE("OUT4 Attenuation Switch", WM8991_OUT3_4_VOLUME,
            WM8991_OUT4ATTN_BIT, 1, 0),

      SOC_SINGLE("Speaker Mode Switch", WM8991_CLASSD1,
            WM8991_CDMODE_BIT, 1, 0),

      SOC_SINGLE("Speaker Output Attenuation Volume", WM8991_SPEAKER_VOLUME,
            WM8991_SPKVOL_SHIFT, WM8991_SPKVOL_MASK, 0),
      SOC_SINGLE("Speaker DC Boost Volume", WM8991_CLASSD3,
            WM8991_DCGAIN_SHIFT, WM8991_DCGAIN_MASK, 0),
      SOC_SINGLE("Speaker AC Boost Volume", WM8991_CLASSD3,
            WM8991_ACGAIN_SHIFT, WM8991_ACGAIN_MASK, 0),

      SOC_WM899X_OUTPGA_SINGLE_R_TLV("Left DAC Digital Volume",
            WM8991_LEFT_DAC_DIGITAL_VOLUME,
            WM8991_DACL_VOL_SHIFT,
            WM8991_DACL_VOL_MASK,
            0,
            out_dac_tlv),

      SOC_WM899X_OUTPGA_SINGLE_R_TLV("Right DAC Digital Volume",
            WM8991_RIGHT_DAC_DIGITAL_VOLUME,
            WM8991_DACR_VOL_SHIFT,
            WM8991_DACR_VOL_MASK,
            0,
            out_dac_tlv),

      SOC_ENUM("Left Digital Sidetone", wm8991_left_digital_sidetone_enum),
      SOC_ENUM("Right Digital Sidetone", wm8991_right_digital_sidetone_enum),

      SOC_SINGLE_TLV("Left Digital Sidetone Volume", WM8991_DIGITAL_SIDE_TONE,
            WM8991_ADCL_DAC_SVOL_SHIFT, WM8991_ADCL_DAC_SVOL_MASK, 0,
            out_sidetone_tlv),
      SOC_SINGLE_TLV("Right Digital Sidetone Volume", WM8991_DIGITAL_SIDE_TONE,
            WM8991_ADCR_DAC_SVOL_SHIFT, WM8991_ADCR_DAC_SVOL_MASK, 0,
            out_sidetone_tlv),

      SOC_SINGLE("ADC Digital High Pass Filter Switch", WM8991_ADC_CTRL,
            WM8991_ADC_HPF_ENA_BIT, 1, 0),

      SOC_ENUM("ADC HPF Mode", wm8991_right_adcmode_enum),

      SOC_WM899X_OUTPGA_SINGLE_R_TLV("Left ADC Digital Volume",
            WM8991_LEFT_ADC_DIGITAL_VOLUME,
            WM8991_ADCL_VOL_SHIFT,
            WM8991_ADCL_VOL_MASK,
            0,
            in_adc_tlv),

      SOC_WM899X_OUTPGA_SINGLE_R_TLV("Right ADC Digital Volume",
            WM8991_RIGHT_ADC_DIGITAL_VOLUME,
            WM8991_ADCR_VOL_SHIFT,
            WM8991_ADCR_VOL_MASK,
            0,
            in_adc_tlv),

      SOC_WM899X_OUTPGA_SINGLE_R_TLV("LIN12 Volume",
            WM8991_LEFT_LINE_INPUT_1_2_VOLUME,
            WM8991_LIN12VOL_SHIFT,
            WM8991_LIN12VOL_MASK,
            0,
            in_pga_tlv),

      SOC_SINGLE("LIN12 ZC Switch", WM8991_LEFT_LINE_INPUT_1_2_VOLUME,
            WM8991_LI12ZC_BIT, 1, 0),

      SOC_SINGLE("LIN12 Mute Switch", WM8991_LEFT_LINE_INPUT_1_2_VOLUME,
            WM8991_LI12MUTE_BIT, 1, 0),

      SOC_WM899X_OUTPGA_SINGLE_R_TLV("LIN34 Volume",
            WM8991_LEFT_LINE_INPUT_3_4_VOLUME,
            WM8991_LIN34VOL_SHIFT,
            WM8991_LIN34VOL_MASK,
            0,
            in_pga_tlv),

      SOC_SINGLE("LIN34 ZC Switch", WM8991_LEFT_LINE_INPUT_3_4_VOLUME,
            WM8991_LI34ZC_BIT, 1, 0),

      SOC_SINGLE("LIN34 Mute Switch", WM8991_LEFT_LINE_INPUT_3_4_VOLUME,
            WM8991_LI34MUTE_BIT, 1, 0),

      SOC_WM899X_OUTPGA_SINGLE_R_TLV("RIN12 Volume",
            WM8991_RIGHT_LINE_INPUT_1_2_VOLUME,
            WM8991_RIN12VOL_SHIFT,
            WM8991_RIN12VOL_MASK,
            0,
            in_pga_tlv),

      SOC_SINGLE("RIN12 ZC Switch", WM8991_RIGHT_LINE_INPUT_1_2_VOLUME,
            WM8991_RI12ZC_BIT, 1, 0),

      SOC_SINGLE("RIN12 Mute Switch", WM8991_RIGHT_LINE_INPUT_1_2_VOLUME,
            WM8991_RI12MUTE_BIT, 1, 0),

      SOC_WM899X_OUTPGA_SINGLE_R_TLV("RIN34 Volume",
            WM8991_RIGHT_LINE_INPUT_3_4_VOLUME,
            WM8991_RIN34VOL_SHIFT,
            WM8991_RIN34VOL_MASK,
            0,
            in_pga_tlv),

      SOC_SINGLE("RIN34 ZC Switch", WM8991_RIGHT_LINE_INPUT_3_4_VOLUME,
            WM8991_RI34ZC_BIT, 1, 0),

      SOC_SINGLE("RIN34 Mute Switch", WM8991_RIGHT_LINE_INPUT_3_4_VOLUME,
            WM8991_RI34MUTE_BIT, 1, 0),
};

/*
 * _DAPM_ Controls
 */
static int inmixer_event(struct snd_soc_dapm_widget *w,
                   struct snd_kcontrol *kcontrol, int event)
{
      u16 reg, fakepower;

      reg = snd_soc_read(w->codec, WM8991_POWER_MANAGEMENT_2);
      fakepower = snd_soc_read(w->codec, WM8991_INTDRIVBITS);

      if (fakepower & ((1 << WM8991_INMIXL_PWR_BIT) |
                   (1 << WM8991_AINLMUX_PWR_BIT)))
            reg |= WM8991_AINL_ENA;
      else
            reg &= ~WM8991_AINL_ENA;

      if (fakepower & ((1 << WM8991_INMIXR_PWR_BIT) |
                   (1 << WM8991_AINRMUX_PWR_BIT)))
            reg |= WM8991_AINR_ENA;
      else
            reg &= ~WM8991_AINL_ENA;

      snd_soc_write(w->codec, WM8991_POWER_MANAGEMENT_2, reg);
      return 0;
}

static int outmixer_event(struct snd_soc_dapm_widget *w,
                    struct snd_kcontrol *kcontrol, int event)
{
      u32 reg_shift = kcontrol->private_value & 0xfff;
      int ret = 0;
      u16 reg;

      switch (reg_shift) {
      case WM8991_SPEAKER_MIXER | (WM8991_LDSPK_BIT << 8):
            reg = snd_soc_read(w->codec, WM8991_OUTPUT_MIXER1);
            if (reg & WM8991_LDLO) {
                  printk(KERN_WARNING
                         "Cannot set as Output Mixer 1 LDLO Set\n");
                  ret = -1;
            }
            break;

      case WM8991_SPEAKER_MIXER | (WM8991_RDSPK_BIT << 8):
            reg = snd_soc_read(w->codec, WM8991_OUTPUT_MIXER2);
            if (reg & WM8991_RDRO) {
                  printk(KERN_WARNING
                         "Cannot set as Output Mixer 2 RDRO Set\n");
                  ret = -1;
            }
            break;

      case WM8991_OUTPUT_MIXER1 | (WM8991_LDLO_BIT << 8):
            reg = snd_soc_read(w->codec, WM8991_SPEAKER_MIXER);
            if (reg & WM8991_LDSPK) {
                  printk(KERN_WARNING
                         "Cannot set as Speaker Mixer LDSPK Set\n");
                  ret = -1;
            }
            break;

      case WM8991_OUTPUT_MIXER2 | (WM8991_RDRO_BIT << 8):
            reg = snd_soc_read(w->codec, WM8991_SPEAKER_MIXER);
            if (reg & WM8991_RDSPK) {
                  printk(KERN_WARNING
                         "Cannot set as Speaker Mixer RDSPK Set\n");
                  ret = -1;
            }
            break;
      }

      return ret;
}

/* INMIX dB values */
static const unsigned int in_mix_tlv[] = {
      TLV_DB_RANGE_HEAD(1),
      0, 7, TLV_DB_LINEAR_ITEM(-1200, 600),
};

/* Left In PGA Connections */
static const struct snd_kcontrol_new wm8991_dapm_lin12_pga_controls[] = {
      SOC_DAPM_SINGLE("LIN1 Switch", WM8991_INPUT_MIXER2, WM8991_LMN1_BIT, 1, 0),
      SOC_DAPM_SINGLE("LIN2 Switch", WM8991_INPUT_MIXER2, WM8991_LMP2_BIT, 1, 0),
};

static const struct snd_kcontrol_new wm8991_dapm_lin34_pga_controls[] = {
      SOC_DAPM_SINGLE("LIN3 Switch", WM8991_INPUT_MIXER2, WM8991_LMN3_BIT, 1, 0),
      SOC_DAPM_SINGLE("LIN4 Switch", WM8991_INPUT_MIXER2, WM8991_LMP4_BIT, 1, 0),
};

/* Right In PGA Connections */
static const struct snd_kcontrol_new wm8991_dapm_rin12_pga_controls[] = {
      SOC_DAPM_SINGLE("RIN1 Switch", WM8991_INPUT_MIXER2, WM8991_RMN1_BIT, 1, 0),
      SOC_DAPM_SINGLE("RIN2 Switch", WM8991_INPUT_MIXER2, WM8991_RMP2_BIT, 1, 0),
};

static const struct snd_kcontrol_new wm8991_dapm_rin34_pga_controls[] = {
      SOC_DAPM_SINGLE("RIN3 Switch", WM8991_INPUT_MIXER2, WM8991_RMN3_BIT, 1, 0),
      SOC_DAPM_SINGLE("RIN4 Switch", WM8991_INPUT_MIXER2, WM8991_RMP4_BIT, 1, 0),
};

/* INMIXL */
static const struct snd_kcontrol_new wm8991_dapm_inmixl_controls[] = {
      SOC_DAPM_SINGLE_TLV("Record Left Volume", WM8991_INPUT_MIXER3,
            WM8991_LDBVOL_SHIFT, WM8991_LDBVOL_MASK, 0, in_mix_tlv),
      SOC_DAPM_SINGLE_TLV("LIN2 Volume", WM8991_INPUT_MIXER5, WM8991_LI2BVOL_SHIFT,
            7, 0, in_mix_tlv),
      SOC_DAPM_SINGLE("LINPGA12 Switch", WM8991_INPUT_MIXER3, WM8991_L12MNB_BIT,
            1, 0),
      SOC_DAPM_SINGLE("LINPGA34 Switch", WM8991_INPUT_MIXER3, WM8991_L34MNB_BIT,
            1, 0),
};

/* INMIXR */
static const struct snd_kcontrol_new wm8991_dapm_inmixr_controls[] = {
      SOC_DAPM_SINGLE_TLV("Record Right Volume", WM8991_INPUT_MIXER4,
            WM8991_RDBVOL_SHIFT, WM8991_RDBVOL_MASK, 0, in_mix_tlv),
      SOC_DAPM_SINGLE_TLV("RIN2 Volume", WM8991_INPUT_MIXER6, WM8991_RI2BVOL_SHIFT,
            7, 0, in_mix_tlv),
      SOC_DAPM_SINGLE("RINPGA12 Switch", WM8991_INPUT_MIXER3, WM8991_L12MNB_BIT,
            1, 0),
      SOC_DAPM_SINGLE("RINPGA34 Switch", WM8991_INPUT_MIXER3, WM8991_L34MNB_BIT,
            1, 0),
};

/* AINLMUX */
static const char *wm8991_ainlmux[] =
{"INMIXL Mix", "RXVOICE Mix", "DIFFINL Mix"};

static const struct soc_enum wm8991_ainlmux_enum =
      SOC_ENUM_SINGLE(WM8991_INPUT_MIXER1, WM8991_AINLMODE_SHIFT,
                  ARRAY_SIZE(wm8991_ainlmux), wm8991_ainlmux);

static const struct snd_kcontrol_new wm8991_dapm_ainlmux_controls =
      SOC_DAPM_ENUM("Route", wm8991_ainlmux_enum);

/* DIFFINL */

/* AINRMUX */
static const char *wm8991_ainrmux[] =
{"INMIXR Mix", "RXVOICE Mix", "DIFFINR Mix"};

static const struct soc_enum wm8991_ainrmux_enum =
      SOC_ENUM_SINGLE(WM8991_INPUT_MIXER1, WM8991_AINRMODE_SHIFT,
                  ARRAY_SIZE(wm8991_ainrmux), wm8991_ainrmux);

static const struct snd_kcontrol_new wm8991_dapm_ainrmux_controls =
      SOC_DAPM_ENUM("Route", wm8991_ainrmux_enum);

/* RXVOICE */
static const struct snd_kcontrol_new wm8991_dapm_rxvoice_controls[] = {
      SOC_DAPM_SINGLE_TLV("LIN4RXN", WM8991_INPUT_MIXER5, WM8991_LR4BVOL_SHIFT,
            WM8991_LR4BVOL_MASK, 0, in_mix_tlv),
      SOC_DAPM_SINGLE_TLV("RIN4RXP", WM8991_INPUT_MIXER6, WM8991_RL4BVOL_SHIFT,
            WM8991_RL4BVOL_MASK, 0, in_mix_tlv),
};

/* LOMIX */
static const struct snd_kcontrol_new wm8991_dapm_lomix_controls[] = {
      SOC_DAPM_SINGLE("LOMIX Right ADC Bypass Switch", WM8991_OUTPUT_MIXER1,
            WM8991_LRBLO_BIT, 1, 0),
      SOC_DAPM_SINGLE("LOMIX Left ADC Bypass Switch", WM8991_OUTPUT_MIXER1,
            WM8991_LLBLO_BIT, 1, 0),
      SOC_DAPM_SINGLE("LOMIX RIN3 Bypass Switch", WM8991_OUTPUT_MIXER1,
            WM8991_LRI3LO_BIT, 1, 0),
      SOC_DAPM_SINGLE("LOMIX LIN3 Bypass Switch", WM8991_OUTPUT_MIXER1,
            WM8991_LLI3LO_BIT, 1, 0),
      SOC_DAPM_SINGLE("LOMIX RIN12 PGA Bypass Switch", WM8991_OUTPUT_MIXER1,
            WM8991_LR12LO_BIT, 1, 0),
      SOC_DAPM_SINGLE("LOMIX LIN12 PGA Bypass Switch", WM8991_OUTPUT_MIXER1,
            WM8991_LL12LO_BIT, 1, 0),
      SOC_DAPM_SINGLE("LOMIX Left DAC Switch", WM8991_OUTPUT_MIXER1,
            WM8991_LDLO_BIT, 1, 0),
};

/* ROMIX */
static const struct snd_kcontrol_new wm8991_dapm_romix_controls[] = {
      SOC_DAPM_SINGLE("ROMIX Left ADC Bypass Switch", WM8991_OUTPUT_MIXER2,
            WM8991_RLBRO_BIT, 1, 0),
      SOC_DAPM_SINGLE("ROMIX Right ADC Bypass Switch", WM8991_OUTPUT_MIXER2,
            WM8991_RRBRO_BIT, 1, 0),
      SOC_DAPM_SINGLE("ROMIX LIN3 Bypass Switch", WM8991_OUTPUT_MIXER2,
            WM8991_RLI3RO_BIT, 1, 0),
      SOC_DAPM_SINGLE("ROMIX RIN3 Bypass Switch", WM8991_OUTPUT_MIXER2,
            WM8991_RRI3RO_BIT, 1, 0),
      SOC_DAPM_SINGLE("ROMIX LIN12 PGA Bypass Switch", WM8991_OUTPUT_MIXER2,
            WM8991_RL12RO_BIT, 1, 0),
      SOC_DAPM_SINGLE("ROMIX RIN12 PGA Bypass Switch", WM8991_OUTPUT_MIXER2,
            WM8991_RR12RO_BIT, 1, 0),
      SOC_DAPM_SINGLE("ROMIX Right DAC Switch", WM8991_OUTPUT_MIXER2,
            WM8991_RDRO_BIT, 1, 0),
};

/* LONMIX */
static const struct snd_kcontrol_new wm8991_dapm_lonmix_controls[] = {
      SOC_DAPM_SINGLE("LONMIX Left Mixer PGA Switch", WM8991_LINE_MIXER1,
            WM8991_LLOPGALON_BIT, 1, 0),
      SOC_DAPM_SINGLE("LONMIX Right Mixer PGA Switch", WM8991_LINE_MIXER1,
            WM8991_LROPGALON_BIT, 1, 0),
      SOC_DAPM_SINGLE("LONMIX Inverted LOP Switch", WM8991_LINE_MIXER1,
            WM8991_LOPLON_BIT, 1, 0),
};

/* LOPMIX */
static const struct snd_kcontrol_new wm8991_dapm_lopmix_controls[] = {
      SOC_DAPM_SINGLE("LOPMIX Right Mic Bypass Switch", WM8991_LINE_MIXER1,
            WM8991_LR12LOP_BIT, 1, 0),
      SOC_DAPM_SINGLE("LOPMIX Left Mic Bypass Switch", WM8991_LINE_MIXER1,
            WM8991_LL12LOP_BIT, 1, 0),
      SOC_DAPM_SINGLE("LOPMIX Left Mixer PGA Switch", WM8991_LINE_MIXER1,
            WM8991_LLOPGALOP_BIT, 1, 0),
};

/* RONMIX */
static const struct snd_kcontrol_new wm8991_dapm_ronmix_controls[] = {
      SOC_DAPM_SINGLE("RONMIX Right Mixer PGA Switch", WM8991_LINE_MIXER2,
            WM8991_RROPGARON_BIT, 1, 0),
      SOC_DAPM_SINGLE("RONMIX Left Mixer PGA Switch", WM8991_LINE_MIXER2,
            WM8991_RLOPGARON_BIT, 1, 0),
      SOC_DAPM_SINGLE("RONMIX Inverted ROP Switch", WM8991_LINE_MIXER2,
            WM8991_ROPRON_BIT, 1, 0),
};

/* ROPMIX */
static const struct snd_kcontrol_new wm8991_dapm_ropmix_controls[] = {
      SOC_DAPM_SINGLE("ROPMIX Left Mic Bypass Switch", WM8991_LINE_MIXER2,
            WM8991_RL12ROP_BIT, 1, 0),
      SOC_DAPM_SINGLE("ROPMIX Right Mic Bypass Switch", WM8991_LINE_MIXER2,
            WM8991_RR12ROP_BIT, 1, 0),
      SOC_DAPM_SINGLE("ROPMIX Right Mixer PGA Switch", WM8991_LINE_MIXER2,
            WM8991_RROPGAROP_BIT, 1, 0),
};

/* OUT3MIX */
static const struct snd_kcontrol_new wm8991_dapm_out3mix_controls[] = {
      SOC_DAPM_SINGLE("OUT3MIX LIN4RXN Bypass Switch", WM8991_OUT3_4_MIXER,
            WM8991_LI4O3_BIT, 1, 0),
      SOC_DAPM_SINGLE("OUT3MIX Left Out PGA Switch", WM8991_OUT3_4_MIXER,
            WM8991_LPGAO3_BIT, 1, 0),
};

/* OUT4MIX */
static const struct snd_kcontrol_new wm8991_dapm_out4mix_controls[] = {
      SOC_DAPM_SINGLE("OUT4MIX Right Out PGA Switch", WM8991_OUT3_4_MIXER,
            WM8991_RPGAO4_BIT, 1, 0),
      SOC_DAPM_SINGLE("OUT4MIX RIN4RXP Bypass Switch", WM8991_OUT3_4_MIXER,
            WM8991_RI4O4_BIT, 1, 0),
};

/* SPKMIX */
static const struct snd_kcontrol_new wm8991_dapm_spkmix_controls[] = {
      SOC_DAPM_SINGLE("SPKMIX LIN2 Bypass Switch", WM8991_SPEAKER_MIXER,
            WM8991_LI2SPK_BIT, 1, 0),
      SOC_DAPM_SINGLE("SPKMIX LADC Bypass Switch", WM8991_SPEAKER_MIXER,
            WM8991_LB2SPK_BIT, 1, 0),
      SOC_DAPM_SINGLE("SPKMIX Left Mixer PGA Switch", WM8991_SPEAKER_MIXER,
            WM8991_LOPGASPK_BIT, 1, 0),
      SOC_DAPM_SINGLE("SPKMIX Left DAC Switch", WM8991_SPEAKER_MIXER,
            WM8991_LDSPK_BIT, 1, 0),
      SOC_DAPM_SINGLE("SPKMIX Right DAC Switch", WM8991_SPEAKER_MIXER,
            WM8991_RDSPK_BIT, 1, 0),
      SOC_DAPM_SINGLE("SPKMIX Right Mixer PGA Switch", WM8991_SPEAKER_MIXER,
            WM8991_ROPGASPK_BIT, 1, 0),
      SOC_DAPM_SINGLE("SPKMIX RADC Bypass Switch", WM8991_SPEAKER_MIXER,
            WM8991_RL12ROP_BIT, 1, 0),
      SOC_DAPM_SINGLE("SPKMIX RIN2 Bypass Switch", WM8991_SPEAKER_MIXER,
            WM8991_RI2SPK_BIT, 1, 0),
};

static const struct snd_soc_dapm_widget wm8991_dapm_widgets[] = {
      /* Input Side */
      /* Input Lines */
      SND_SOC_DAPM_INPUT("LIN1"),
      SND_SOC_DAPM_INPUT("LIN2"),
      SND_SOC_DAPM_INPUT("LIN3"),
      SND_SOC_DAPM_INPUT("LIN4RXN"),
      SND_SOC_DAPM_INPUT("RIN3"),
      SND_SOC_DAPM_INPUT("RIN4RXP"),
      SND_SOC_DAPM_INPUT("RIN1"),
      SND_SOC_DAPM_INPUT("RIN2"),
      SND_SOC_DAPM_INPUT("Internal ADC Source"),

      /* DACs */
      SND_SOC_DAPM_ADC("Left ADC", "Left Capture", WM8991_POWER_MANAGEMENT_2,
            WM8991_ADCL_ENA_BIT, 0),
      SND_SOC_DAPM_ADC("Right ADC", "Right Capture", WM8991_POWER_MANAGEMENT_2,
            WM8991_ADCR_ENA_BIT, 0),

      /* Input PGAs */
      SND_SOC_DAPM_MIXER("LIN12 PGA", WM8991_POWER_MANAGEMENT_2, WM8991_LIN12_ENA_BIT,
            0, &wm8991_dapm_lin12_pga_controls[0],
            ARRAY_SIZE(wm8991_dapm_lin12_pga_controls)),
      SND_SOC_DAPM_MIXER("LIN34 PGA", WM8991_POWER_MANAGEMENT_2, WM8991_LIN34_ENA_BIT,
            0, &wm8991_dapm_lin34_pga_controls[0],
            ARRAY_SIZE(wm8991_dapm_lin34_pga_controls)),
      SND_SOC_DAPM_MIXER("RIN12 PGA", WM8991_POWER_MANAGEMENT_2, WM8991_RIN12_ENA_BIT,
            0, &wm8991_dapm_rin12_pga_controls[0],
            ARRAY_SIZE(wm8991_dapm_rin12_pga_controls)),
      SND_SOC_DAPM_MIXER("RIN34 PGA", WM8991_POWER_MANAGEMENT_2, WM8991_RIN34_ENA_BIT,
            0, &wm8991_dapm_rin34_pga_controls[0],
            ARRAY_SIZE(wm8991_dapm_rin34_pga_controls)),

      /* INMIXL */
      SND_SOC_DAPM_MIXER_E("INMIXL", WM8991_INTDRIVBITS, WM8991_INMIXL_PWR_BIT, 0,
            &wm8991_dapm_inmixl_controls[0],
            ARRAY_SIZE(wm8991_dapm_inmixl_controls),
            inmixer_event, SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_POST_PMD),

      /* AINLMUX */
      SND_SOC_DAPM_MUX_E("AINLMUX", WM8991_INTDRIVBITS, WM8991_AINLMUX_PWR_BIT, 0,
            &wm8991_dapm_ainlmux_controls, inmixer_event,
            SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_POST_PMD),

      /* INMIXR */
      SND_SOC_DAPM_MIXER_E("INMIXR", WM8991_INTDRIVBITS, WM8991_INMIXR_PWR_BIT, 0,
            &wm8991_dapm_inmixr_controls[0],
            ARRAY_SIZE(wm8991_dapm_inmixr_controls),
            inmixer_event, SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_POST_PMD),

      /* AINRMUX */
      SND_SOC_DAPM_MUX_E("AINRMUX", WM8991_INTDRIVBITS, WM8991_AINRMUX_PWR_BIT, 0,
            &wm8991_dapm_ainrmux_controls, inmixer_event,
            SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_POST_PMD),

      /* Output Side */
      /* DACs */
      SND_SOC_DAPM_DAC("Left DAC", "Left Playback", WM8991_POWER_MANAGEMENT_3,
            WM8991_DACL_ENA_BIT, 0),
      SND_SOC_DAPM_DAC("Right DAC", "Right Playback", WM8991_POWER_MANAGEMENT_3,
            WM8991_DACR_ENA_BIT, 0),

      /* LOMIX */
      SND_SOC_DAPM_MIXER_E("LOMIX", WM8991_POWER_MANAGEMENT_3, WM8991_LOMIX_ENA_BIT,
            0, &wm8991_dapm_lomix_controls[0],
            ARRAY_SIZE(wm8991_dapm_lomix_controls),
            outmixer_event, SND_SOC_DAPM_PRE_REG),

      /* LONMIX */
      SND_SOC_DAPM_MIXER("LONMIX", WM8991_POWER_MANAGEMENT_3, WM8991_LON_ENA_BIT, 0,
            &wm8991_dapm_lonmix_controls[0],
            ARRAY_SIZE(wm8991_dapm_lonmix_controls)),

      /* LOPMIX */
      SND_SOC_DAPM_MIXER("LOPMIX", WM8991_POWER_MANAGEMENT_3, WM8991_LOP_ENA_BIT, 0,
            &wm8991_dapm_lopmix_controls[0],
            ARRAY_SIZE(wm8991_dapm_lopmix_controls)),

      /* OUT3MIX */
      SND_SOC_DAPM_MIXER("OUT3MIX", WM8991_POWER_MANAGEMENT_1, WM8991_OUT3_ENA_BIT, 0,
            &wm8991_dapm_out3mix_controls[0],
            ARRAY_SIZE(wm8991_dapm_out3mix_controls)),

      /* SPKMIX */
      SND_SOC_DAPM_MIXER_E("SPKMIX", WM8991_POWER_MANAGEMENT_1, WM8991_SPK_ENA_BIT, 0,
            &wm8991_dapm_spkmix_controls[0],
            ARRAY_SIZE(wm8991_dapm_spkmix_controls), outmixer_event,
            SND_SOC_DAPM_PRE_REG),

      /* OUT4MIX */
      SND_SOC_DAPM_MIXER("OUT4MIX", WM8991_POWER_MANAGEMENT_1, WM8991_OUT4_ENA_BIT, 0,
            &wm8991_dapm_out4mix_controls[0],
            ARRAY_SIZE(wm8991_dapm_out4mix_controls)),

      /* ROPMIX */
      SND_SOC_DAPM_MIXER("ROPMIX", WM8991_POWER_MANAGEMENT_3, WM8991_ROP_ENA_BIT, 0,
            &wm8991_dapm_ropmix_controls[0],
            ARRAY_SIZE(wm8991_dapm_ropmix_controls)),

      /* RONMIX */
      SND_SOC_DAPM_MIXER("RONMIX", WM8991_POWER_MANAGEMENT_3, WM8991_RON_ENA_BIT, 0,
            &wm8991_dapm_ronmix_controls[0],
            ARRAY_SIZE(wm8991_dapm_ronmix_controls)),

      /* ROMIX */
      SND_SOC_DAPM_MIXER_E("ROMIX", WM8991_POWER_MANAGEMENT_3, WM8991_ROMIX_ENA_BIT,
            0, &wm8991_dapm_romix_controls[0],
            ARRAY_SIZE(wm8991_dapm_romix_controls),
            outmixer_event, SND_SOC_DAPM_PRE_REG),

      /* LOUT PGA */
      SND_SOC_DAPM_PGA("LOUT PGA", WM8991_POWER_MANAGEMENT_1, WM8991_LOUT_ENA_BIT, 0,
            NULL, 0),

      /* ROUT PGA */
      SND_SOC_DAPM_PGA("ROUT PGA", WM8991_POWER_MANAGEMENT_1, WM8991_ROUT_ENA_BIT, 0,
            NULL, 0),

      /* LOPGA */
      SND_SOC_DAPM_PGA("LOPGA", WM8991_POWER_MANAGEMENT_3, WM8991_LOPGA_ENA_BIT, 0,
            NULL, 0),

      /* ROPGA */
      SND_SOC_DAPM_PGA("ROPGA", WM8991_POWER_MANAGEMENT_3, WM8991_ROPGA_ENA_BIT, 0,
            NULL, 0),

      /* MICBIAS */
      SND_SOC_DAPM_MICBIAS("MICBIAS", WM8991_POWER_MANAGEMENT_1,
            WM8991_MICBIAS_ENA_BIT, 0),

      SND_SOC_DAPM_OUTPUT("LON"),
      SND_SOC_DAPM_OUTPUT("LOP"),
      SND_SOC_DAPM_OUTPUT("OUT3"),
      SND_SOC_DAPM_OUTPUT("LOUT"),
      SND_SOC_DAPM_OUTPUT("SPKN"),
      SND_SOC_DAPM_OUTPUT("SPKP"),
      SND_SOC_DAPM_OUTPUT("ROUT"),
      SND_SOC_DAPM_OUTPUT("OUT4"),
      SND_SOC_DAPM_OUTPUT("ROP"),
      SND_SOC_DAPM_OUTPUT("RON"),
      SND_SOC_DAPM_OUTPUT("OUT"),

      SND_SOC_DAPM_OUTPUT("Internal DAC Sink"),
};

static const struct snd_soc_dapm_route audio_map[] = {
      /* Make DACs turn on when playing even if not mixed into any outputs */
      {"Internal DAC Sink", NULL, "Left DAC"},
      {"Internal DAC Sink", NULL, "Right DAC"},

      /* Make ADCs turn on when recording even if not mixed from any inputs */
      {"Left ADC", NULL, "Internal ADC Source"},
      {"Right ADC", NULL, "Internal ADC Source"},

      /* Input Side */
      /* LIN12 PGA */
      {"LIN12 PGA", "LIN1 Switch", "LIN1"},
      {"LIN12 PGA", "LIN2 Switch", "LIN2"},
      /* LIN34 PGA */
      {"LIN34 PGA", "LIN3 Switch", "LIN3"},
      {"LIN34 PGA", "LIN4 Switch", "LIN4RXN"},
      /* INMIXL */
      {"INMIXL", "Record Left Volume", "LOMIX"},
      {"INMIXL", "LIN2 Volume", "LIN2"},
      {"INMIXL", "LINPGA12 Switch", "LIN12 PGA"},
      {"INMIXL", "LINPGA34 Switch", "LIN34 PGA"},
      /* AINLMUX */
      {"AINLMUX", "INMIXL Mix", "INMIXL"},
      {"AINLMUX", "DIFFINL Mix", "LIN12 PGA"},
      {"AINLMUX", "DIFFINL Mix", "LIN34 PGA"},
      {"AINLMUX", "RXVOICE Mix", "LIN4RXN"},
      {"AINLMUX", "RXVOICE Mix", "RIN4RXP"},
      /* ADC */
      {"Left ADC", NULL, "AINLMUX"},

      /* RIN12 PGA */
      {"RIN12 PGA", "RIN1 Switch", "RIN1"},
      {"RIN12 PGA", "RIN2 Switch", "RIN2"},
      /* RIN34 PGA */
      {"RIN34 PGA", "RIN3 Switch", "RIN3"},
      {"RIN34 PGA", "RIN4 Switch", "RIN4RXP"},
      /* INMIXL */
      {"INMIXR", "Record Right Volume", "ROMIX"},
      {"INMIXR", "RIN2 Volume", "RIN2"},
      {"INMIXR", "RINPGA12 Switch", "RIN12 PGA"},
      {"INMIXR", "RINPGA34 Switch", "RIN34 PGA"},
      /* AINRMUX */
      {"AINRMUX", "INMIXR Mix", "INMIXR"},
      {"AINRMUX", "DIFFINR Mix", "RIN12 PGA"},
      {"AINRMUX", "DIFFINR Mix", "RIN34 PGA"},
      {"AINRMUX", "RXVOICE Mix", "LIN4RXN"},
      {"AINRMUX", "RXVOICE Mix", "RIN4RXP"},
      /* ADC */
      {"Right ADC", NULL, "AINRMUX"},

      /* LOMIX */
      {"LOMIX", "LOMIX RIN3 Bypass Switch", "RIN3"},
      {"LOMIX", "LOMIX LIN3 Bypass Switch", "LIN3"},
      {"LOMIX", "LOMIX LIN12 PGA Bypass Switch", "LIN12 PGA"},
      {"LOMIX", "LOMIX RIN12 PGA Bypass Switch", "RIN12 PGA"},
      {"LOMIX", "LOMIX Right ADC Bypass Switch", "AINRMUX"},
      {"LOMIX", "LOMIX Left ADC Bypass Switch", "AINLMUX"},
      {"LOMIX", "LOMIX Left DAC Switch", "Left DAC"},

      /* ROMIX */
      {"ROMIX", "ROMIX RIN3 Bypass Switch", "RIN3"},
      {"ROMIX", "ROMIX LIN3 Bypass Switch", "LIN3"},
      {"ROMIX", "ROMIX LIN12 PGA Bypass Switch", "LIN12 PGA"},
      {"ROMIX", "ROMIX RIN12 PGA Bypass Switch", "RIN12 PGA"},
      {"ROMIX", "ROMIX Right ADC Bypass Switch", "AINRMUX"},
      {"ROMIX", "ROMIX Left ADC Bypass Switch", "AINLMUX"},
      {"ROMIX", "ROMIX Right DAC Switch", "Right DAC"},

      /* SPKMIX */
      {"SPKMIX", "SPKMIX LIN2 Bypass Switch", "LIN2"},
      {"SPKMIX", "SPKMIX RIN2 Bypass Switch", "RIN2"},
      {"SPKMIX", "SPKMIX LADC Bypass Switch", "AINLMUX"},
      {"SPKMIX", "SPKMIX RADC Bypass Switch", "AINRMUX"},
      {"SPKMIX", "SPKMIX Left Mixer PGA Switch", "LOPGA"},
      {"SPKMIX", "SPKMIX Right Mixer PGA Switch", "ROPGA"},
      {"SPKMIX", "SPKMIX Right DAC Switch", "Right DAC"},
      {"SPKMIX", "SPKMIX Left DAC Switch", "Right DAC"},

      /* LONMIX */
      {"LONMIX", "LONMIX Left Mixer PGA Switch", "LOPGA"},
      {"LONMIX", "LONMIX Right Mixer PGA Switch", "ROPGA"},
      {"LONMIX", "LONMIX Inverted LOP Switch", "LOPMIX"},

      /* LOPMIX */
      {"LOPMIX", "LOPMIX Right Mic Bypass Switch", "RIN12 PGA"},
      {"LOPMIX", "LOPMIX Left Mic Bypass Switch", "LIN12 PGA"},
      {"LOPMIX", "LOPMIX Left Mixer PGA Switch", "LOPGA"},

      /* OUT3MIX */
      {"OUT3MIX", "OUT3MIX LIN4RXN Bypass Switch", "LIN4RXN"},
      {"OUT3MIX", "OUT3MIX Left Out PGA Switch", "LOPGA"},

      /* OUT4MIX */
      {"OUT4MIX", "OUT4MIX Right Out PGA Switch", "ROPGA"},
      {"OUT4MIX", "OUT4MIX RIN4RXP Bypass Switch", "RIN4RXP"},

      /* RONMIX */
      {"RONMIX", "RONMIX Right Mixer PGA Switch", "ROPGA"},
      {"RONMIX", "RONMIX Left Mixer PGA Switch", "LOPGA"},
      {"RONMIX", "RONMIX Inverted ROP Switch", "ROPMIX"},

      /* ROPMIX */
      {"ROPMIX", "ROPMIX Left Mic Bypass Switch", "LIN12 PGA"},
      {"ROPMIX", "ROPMIX Right Mic Bypass Switch", "RIN12 PGA"},
      {"ROPMIX", "ROPMIX Right Mixer PGA Switch", "ROPGA"},

      /* Out Mixer PGAs */
      {"LOPGA", NULL, "LOMIX"},
      {"ROPGA", NULL, "ROMIX"},

      {"LOUT PGA", NULL, "LOMIX"},
      {"ROUT PGA", NULL, "ROMIX"},

      /* Output Pins */
      {"LON", NULL, "LONMIX"},
      {"LOP", NULL, "LOPMIX"},
      {"OUT", NULL, "OUT3MIX"},
      {"LOUT", NULL, "LOUT PGA"},
      {"SPKN", NULL, "SPKMIX"},
      {"ROUT", NULL, "ROUT PGA"},
      {"OUT4", NULL, "OUT4MIX"},
      {"ROP", NULL, "ROPMIX"},
      {"RON", NULL, "RONMIX"},
};

/* PLL divisors */
struct _pll_div {
      u32 div2;
      u32 n;
      u32 k;
};

/* The size in bits of the pll divide multiplied by 10
 * to allow rounding later */
#define FIXED_PLL_SIZE ((1 << 16) * 10)

static void pll_factors(struct _pll_div *pll_div, unsigned int target,
                  unsigned int source)
{
      u64 Kpart;
      unsigned int K, Ndiv, Nmod;


      Ndiv = target / source;
      if (Ndiv < 6) {
            source >>= 1;
            pll_div->div2 = 1;
            Ndiv = target / source;
      } else
            pll_div->div2 = 0;

      if ((Ndiv < 6) || (Ndiv > 12))
            printk(KERN_WARNING
                   "WM8991 N value outwith recommended range! N = %d\n", Ndiv);

      pll_div->n = Ndiv;
      Nmod = target % source;
      Kpart = FIXED_PLL_SIZE * (long long)Nmod;

      do_div(Kpart, source);

      K = Kpart & 0xFFFFFFFF;

      /* Check if we need to round */
      if ((K % 10) >= 5)
            K += 5;

      /* Move down to proper range now rounding is done */
      K /= 10;

      pll_div->k = K;
}

static int wm8991_set_dai_pll(struct snd_soc_dai *codec_dai,
                        int pll_id, int src, unsigned int freq_in, unsigned int freq_out)
{
      u16 reg;
      struct snd_soc_codec *codec = codec_dai->codec;
      struct _pll_div pll_div;

      if (freq_in && freq_out) {
            pll_factors(&pll_div, freq_out * 4, freq_in);

            /* Turn on PLL */
            reg = snd_soc_read(codec, WM8991_POWER_MANAGEMENT_2);
            reg |= WM8991_PLL_ENA;
            snd_soc_write(codec, WM8991_POWER_MANAGEMENT_2, reg);

            /* sysclk comes from PLL */
            reg = snd_soc_read(codec, WM8991_CLOCKING_2);
            snd_soc_write(codec, WM8991_CLOCKING_2, reg | WM8991_SYSCLK_SRC);

            /* set up N , fractional mode and pre-divisor if neccessary */
            snd_soc_write(codec, WM8991_PLL1, pll_div.n | WM8991_SDM |
                        (pll_div.div2 ? WM8991_PRESCALE : 0));
            snd_soc_write(codec, WM8991_PLL2, (u8)(pll_div.k>>8));
            snd_soc_write(codec, WM8991_PLL3, (u8)(pll_div.k & 0xFF));
      } else {
            /* Turn on PLL */
            reg = snd_soc_read(codec, WM8991_POWER_MANAGEMENT_2);
            reg &= ~WM8991_PLL_ENA;
            snd_soc_write(codec, WM8991_POWER_MANAGEMENT_2, reg);
      }
      return 0;
}

/*
 * Set's ADC and Voice DAC format.
 */
static int wm8991_set_dai_fmt(struct snd_soc_dai *codec_dai,
                        unsigned int fmt)
{
      struct snd_soc_codec *codec = codec_dai->codec;
      u16 audio1, audio3;

      audio1 = snd_soc_read(codec, WM8991_AUDIO_INTERFACE_1);
      audio3 = snd_soc_read(codec, WM8991_AUDIO_INTERFACE_3);

      /* set master/slave audio interface */
      switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
      case SND_SOC_DAIFMT_CBS_CFS:
            audio3 &= ~WM8991_AIF_MSTR1;
            break;
      case SND_SOC_DAIFMT_CBM_CFM:
            audio3 |= WM8991_AIF_MSTR1;
            break;
      default:
            return -EINVAL;
      }

      audio1 &= ~WM8991_AIF_FMT_MASK;

      /* interface format */
      switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
      case SND_SOC_DAIFMT_I2S:
            audio1 |= WM8991_AIF_TMF_I2S;
            audio1 &= ~WM8991_AIF_LRCLK_INV;
            break;
      case SND_SOC_DAIFMT_RIGHT_J:
            audio1 |= WM8991_AIF_TMF_RIGHTJ;
            audio1 &= ~WM8991_AIF_LRCLK_INV;
            break;
      case SND_SOC_DAIFMT_LEFT_J:
            audio1 |= WM8991_AIF_TMF_LEFTJ;
            audio1 &= ~WM8991_AIF_LRCLK_INV;
            break;
      case SND_SOC_DAIFMT_DSP_A:
            audio1 |= WM8991_AIF_TMF_DSP;
            audio1 &= ~WM8991_AIF_LRCLK_INV;
            break;
      case SND_SOC_DAIFMT_DSP_B:
            audio1 |= WM8991_AIF_TMF_DSP | WM8991_AIF_LRCLK_INV;
            break;
      default:
            return -EINVAL;
      }

      snd_soc_write(codec, WM8991_AUDIO_INTERFACE_1, audio1);
      snd_soc_write(codec, WM8991_AUDIO_INTERFACE_3, audio3);
      return 0;
}

static int wm8991_set_dai_clkdiv(struct snd_soc_dai *codec_dai,
                         int div_id, int div)
{
      struct snd_soc_codec *codec = codec_dai->codec;
      u16 reg;

      switch (div_id) {
      case WM8991_MCLK_DIV:
            reg = snd_soc_read(codec, WM8991_CLOCKING_2) &
                  ~WM8991_MCLK_DIV_MASK;
            snd_soc_write(codec, WM8991_CLOCKING_2, reg | div);
            break;
      case WM8991_DACCLK_DIV:
            reg = snd_soc_read(codec, WM8991_CLOCKING_2) &
                  ~WM8991_DAC_CLKDIV_MASK;
            snd_soc_write(codec, WM8991_CLOCKING_2, reg | div);
            break;
      case WM8991_ADCCLK_DIV:
            reg = snd_soc_read(codec, WM8991_CLOCKING_2) &
                  ~WM8991_ADC_CLKDIV_MASK;
            snd_soc_write(codec, WM8991_CLOCKING_2, reg | div);
            break;
      case WM8991_BCLK_DIV:
            reg = snd_soc_read(codec, WM8991_CLOCKING_1) &
                  ~WM8991_BCLK_DIV_MASK;
            snd_soc_write(codec, WM8991_CLOCKING_1, reg | div);
            break;
      default:
            return -EINVAL;
      }

      return 0;
}

/*
 * Set PCM DAI bit size and sample rate.
 */
static int wm8991_hw_params(struct snd_pcm_substream *substream,
                      struct snd_pcm_hw_params *params,
                      struct snd_soc_dai *dai)
{
      struct snd_soc_codec *codec = dai->codec;
      u16 audio1 = snd_soc_read(codec, WM8991_AUDIO_INTERFACE_1);

      audio1 &= ~WM8991_AIF_WL_MASK;
      /* bit size */
      switch (params_format(params)) {
      case SNDRV_PCM_FORMAT_S16_LE:
            break;
      case SNDRV_PCM_FORMAT_S20_3LE:
            audio1 |= WM8991_AIF_WL_20BITS;
            break;
      case SNDRV_PCM_FORMAT_S24_LE:
            audio1 |= WM8991_AIF_WL_24BITS;
            break;
      case SNDRV_PCM_FORMAT_S32_LE:
            audio1 |= WM8991_AIF_WL_32BITS;
            break;
      }

      snd_soc_write(codec, WM8991_AUDIO_INTERFACE_1, audio1);
      return 0;
}

static int wm8991_mute(struct snd_soc_dai *dai, int mute)
{
      struct snd_soc_codec *codec = dai->codec;
      u16 val;

      val  = snd_soc_read(codec, WM8991_DAC_CTRL) & ~WM8991_DAC_MUTE;
      if (mute)
            snd_soc_write(codec, WM8991_DAC_CTRL, val | WM8991_DAC_MUTE);
      else
            snd_soc_write(codec, WM8991_DAC_CTRL, val);
      return 0;
}

static int wm8991_set_bias_level(struct snd_soc_codec *codec,
                         enum snd_soc_bias_level level)
{
      u16 val;

      switch (level) {
      case SND_SOC_BIAS_ON:
            break;

      case SND_SOC_BIAS_PREPARE:
            /* VMID=2*50k */
            val = snd_soc_read(codec, WM8991_POWER_MANAGEMENT_1) &
                  ~WM8991_VMID_MODE_MASK;
            snd_soc_write(codec, WM8991_POWER_MANAGEMENT_1, val | 0x2);
            break;

      case SND_SOC_BIAS_STANDBY:
            if (codec->dapm.bias_level == SND_SOC_BIAS_OFF) {
                  snd_soc_cache_sync(codec);
                  /* Enable all output discharge bits */
                  snd_soc_write(codec, WM8991_ANTIPOP1, WM8991_DIS_LLINE |
                              WM8991_DIS_RLINE | WM8991_DIS_OUT3 |
                              WM8991_DIS_OUT4 | WM8991_DIS_LOUT |
                              WM8991_DIS_ROUT);

                  /* Enable POBCTRL, SOFT_ST, VMIDTOG and BUFDCOPEN */
                  snd_soc_write(codec, WM8991_ANTIPOP2, WM8991_SOFTST |
                              WM8991_BUFDCOPEN | WM8991_POBCTRL |
                              WM8991_VMIDTOG);

                  /* Delay to allow output caps to discharge */
                  msleep(300);

                  /* Disable VMIDTOG */
                  snd_soc_write(codec, WM8991_ANTIPOP2, WM8991_SOFTST |
                              WM8991_BUFDCOPEN | WM8991_POBCTRL);

                  /* disable all output discharge bits */
                  snd_soc_write(codec, WM8991_ANTIPOP1, 0);

                  /* Enable outputs */
                  snd_soc_write(codec, WM8991_POWER_MANAGEMENT_1, 0x1b00);

                  msleep(50);

                  /* Enable VMID at 2x50k */
                  snd_soc_write(codec, WM8991_POWER_MANAGEMENT_1, 0x1f02);

                  msleep(100);

                  /* Enable VREF */
                  snd_soc_write(codec, WM8991_POWER_MANAGEMENT_1, 0x1f03);

                  msleep(600);

                  /* Enable BUFIOEN */
                  snd_soc_write(codec, WM8991_ANTIPOP2, WM8991_SOFTST |
                              WM8991_BUFDCOPEN | WM8991_POBCTRL |
                              WM8991_BUFIOEN);

                  /* Disable outputs */
                  snd_soc_write(codec, WM8991_POWER_MANAGEMENT_1, 0x3);

                  /* disable POBCTRL, SOFT_ST and BUFDCOPEN */
                  snd_soc_write(codec, WM8991_ANTIPOP2, WM8991_BUFIOEN);
            }

            /* VMID=2*250k */
            val = snd_soc_read(codec, WM8991_POWER_MANAGEMENT_1) &
                  ~WM8991_VMID_MODE_MASK;
            snd_soc_write(codec, WM8991_POWER_MANAGEMENT_1, val | 0x4);
            break;

      case SND_SOC_BIAS_OFF:
            /* Enable POBCTRL and SOFT_ST */
            snd_soc_write(codec, WM8991_ANTIPOP2, WM8991_SOFTST |
                        WM8991_POBCTRL | WM8991_BUFIOEN);

            /* Enable POBCTRL, SOFT_ST and BUFDCOPEN */
            snd_soc_write(codec, WM8991_ANTIPOP2, WM8991_SOFTST |
                        WM8991_BUFDCOPEN | WM8991_POBCTRL |
                        WM8991_BUFIOEN);

            /* mute DAC */
            val = snd_soc_read(codec, WM8991_DAC_CTRL);
            snd_soc_write(codec, WM8991_DAC_CTRL, val | WM8991_DAC_MUTE);

            /* Enable any disabled outputs */
            snd_soc_write(codec, WM8991_POWER_MANAGEMENT_1, 0x1f03);

            /* Disable VMID */
            snd_soc_write(codec, WM8991_POWER_MANAGEMENT_1, 0x1f01);

            msleep(300);

            /* Enable all output discharge bits */
            snd_soc_write(codec, WM8991_ANTIPOP1, WM8991_DIS_LLINE |
                        WM8991_DIS_RLINE | WM8991_DIS_OUT3 |
                        WM8991_DIS_OUT4 | WM8991_DIS_LOUT |
                        WM8991_DIS_ROUT);

            /* Disable VREF */
            snd_soc_write(codec, WM8991_POWER_MANAGEMENT_1, 0x0);

            /* disable POBCTRL, SOFT_ST and BUFDCOPEN */
            snd_soc_write(codec, WM8991_ANTIPOP2, 0x0);
            codec->cache_sync = 1;
            break;
      }

      codec->dapm.bias_level = level;
      return 0;
}

static int wm8991_suspend(struct snd_soc_codec *codec, pm_message_t state)
{
      wm8991_set_bias_level(codec, SND_SOC_BIAS_OFF);
      return 0;
}

static int wm8991_resume(struct snd_soc_codec *codec)
{
      wm8991_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
      return 0;
}

/* power down chip */
static int wm8991_remove(struct snd_soc_codec *codec)
{
      wm8991_set_bias_level(codec, SND_SOC_BIAS_OFF);
      return 0;
}

static int wm8991_probe(struct snd_soc_codec *codec)
{
      struct wm8991_priv *wm8991;
      int ret;
      unsigned int reg;

      wm8991 = snd_soc_codec_get_drvdata(codec);

      ret = snd_soc_codec_set_cache_io(codec, 8, 16, wm8991->control_type);
      if (ret < 0) {
            dev_err(codec->dev, "Failed to set cache i/o: %d\n", ret);
            return ret;
      }

      ret = wm8991_reset(codec);
      if (ret < 0) {
            dev_err(codec->dev, "Failed to issue reset\n");
            return ret;
      }

      wm8991_set_bias_level(codec, SND_SOC_BIAS_STANDBY);

      reg = snd_soc_read(codec, WM8991_AUDIO_INTERFACE_4);
      snd_soc_write(codec, WM8991_AUDIO_INTERFACE_4, reg | WM8991_ALRCGPIO1);

      reg = snd_soc_read(codec, WM8991_GPIO1_GPIO2) &
            ~WM8991_GPIO1_SEL_MASK;
      snd_soc_write(codec, WM8991_GPIO1_GPIO2, reg | 1);

      reg = snd_soc_read(codec, WM8991_POWER_MANAGEMENT_1);
      snd_soc_write(codec, WM8991_POWER_MANAGEMENT_1, reg | WM8991_VREF_ENA|
                  WM8991_VMID_MODE_MASK);

      reg = snd_soc_read(codec, WM8991_POWER_MANAGEMENT_2);
      snd_soc_write(codec, WM8991_POWER_MANAGEMENT_2, reg | WM8991_OPCLK_ENA);

      snd_soc_write(codec, WM8991_DAC_CTRL, 0);
      snd_soc_write(codec, WM8991_LEFT_OUTPUT_VOLUME, 0x50 | (1<<8));
      snd_soc_write(codec, WM8991_RIGHT_OUTPUT_VOLUME, 0x50 | (1<<8));

      snd_soc_add_controls(codec, wm8991_snd_controls,
                       ARRAY_SIZE(wm8991_snd_controls));

      snd_soc_dapm_new_controls(&codec->dapm, wm8991_dapm_widgets,
                          ARRAY_SIZE(wm8991_dapm_widgets));
      snd_soc_dapm_add_routes(&codec->dapm, audio_map,
                        ARRAY_SIZE(audio_map));
      return 0;
}

#define WM8991_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\
                  SNDRV_PCM_FMTBIT_S24_LE)

static struct snd_soc_dai_ops wm8991_ops = {
      .hw_params = wm8991_hw_params,
      .digital_mute = wm8991_mute,
      .set_fmt = wm8991_set_dai_fmt,
      .set_clkdiv = wm8991_set_dai_clkdiv,
      .set_pll = wm8991_set_dai_pll
};

/*
 * The WM8991 supports 2 different and mutually exclusive DAI
 * configurations.
 *
 * 1. ADC/DAC on Primary Interface
 * 2. ADC on Primary Interface/DAC on secondary
 */
static struct snd_soc_dai_driver wm8991_dai = {
      /* ADC/DAC on primary */
      .name = "wm8991",
      .id = 1,
      .playback = {
            .stream_name = "Playback",
            .channels_min = 1,
            .channels_max = 2,
            .rates = SNDRV_PCM_RATE_8000_96000,
            .formats = WM8991_FORMATS
      },
      .capture = {
            .stream_name = "Capture",
            .channels_min = 1,
            .channels_max = 2,
            .rates = SNDRV_PCM_RATE_8000_96000,
            .formats = WM8991_FORMATS
      },
      .ops = &wm8991_ops
};

static struct snd_soc_codec_driver soc_codec_dev_wm8991 = {
      .probe = wm8991_probe,
      .remove = wm8991_remove,
      .suspend = wm8991_suspend,
      .resume = wm8991_resume,
      .set_bias_level = wm8991_set_bias_level,
      .reg_cache_size = WM8991_MAX_REGISTER + 1,
      .reg_word_size = sizeof(u16),
      .reg_cache_default = wm8991_reg_defs
};

static __devinit int wm8991_i2c_probe(struct i2c_client *i2c,
                              const struct i2c_device_id *id)
{
      struct wm8991_priv *wm8991;
      int ret;

      wm8991 = kzalloc(sizeof *wm8991, GFP_KERNEL);
      if (!wm8991)
            return -ENOMEM;

      wm8991->control_type = SND_SOC_I2C;
      i2c_set_clientdata(i2c, wm8991);

      ret = snd_soc_register_codec(&i2c->dev,
                             &soc_codec_dev_wm8991, &wm8991_dai, 1);
      if (ret < 0)
            kfree(wm8991);
      return ret;
}

static __devexit int wm8991_i2c_remove(struct i2c_client *client)
{
      snd_soc_unregister_codec(&client->dev);
      kfree(i2c_get_clientdata(client));
      return 0;
}

static const struct i2c_device_id wm8991_i2c_id[] = {
      { "wm8991", 0 },
      { }
};
MODULE_DEVICE_TABLE(i2c, wm8991_i2c_id);

static struct i2c_driver wm8991_i2c_driver = {
      .driver = {
            .name = "wm8991",
            .owner = THIS_MODULE,
      },
      .probe = wm8991_i2c_probe,
      .remove = __devexit_p(wm8991_i2c_remove),
      .id_table = wm8991_i2c_id,
};

static int __init wm8991_modinit(void)
{
      int ret;
      ret = i2c_add_driver(&wm8991_i2c_driver);
      if (ret != 0) {
            printk(KERN_ERR "Failed to register WM8991 I2C driver: %d\n",
                   ret);
      }
      return 0;
}
module_init(wm8991_modinit);

static void __exit wm8991_exit(void)
{
      i2c_del_driver(&wm8991_i2c_driver);
}
module_exit(wm8991_exit);

MODULE_DESCRIPTION("ASoC WM8991 driver");
MODULE_AUTHOR("Graeme Gregory");
MODULE_LICENSE("GPL");

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