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wm9712.c

/*
 * wm9712.c  --  ALSA Soc WM9712 codec support
 *
 * Copyright 2006 Wolfson Microelectronics PLC.
 * Author: Liam Girdwood <lrg@slimlogic.co.uk>
 *
 *  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/init.h>
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/device.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/ac97_codec.h>
#include <sound/initval.h>
#include <sound/soc.h>
#include <sound/soc-dapm.h>
#include "wm9712.h"

#define WM9712_VERSION "0.4"

static unsigned int ac97_read(struct snd_soc_codec *codec,
      unsigned int reg);
static int ac97_write(struct snd_soc_codec *codec,
      unsigned int reg, unsigned int val);

/*
 * WM9712 register cache
 */
static const u16 wm9712_reg[] = {
      0x6174, 0x8000, 0x8000, 0x8000, /*  6 */
      0x0f0f, 0xaaa0, 0xc008, 0x6808, /*  e */
      0xe808, 0xaaa0, 0xad00, 0x8000, /* 16 */
      0xe808, 0x3000, 0x8000, 0x0000, /* 1e */
      0x0000, 0x0000, 0x0000, 0x000f, /* 26 */
      0x0405, 0x0410, 0xbb80, 0xbb80, /* 2e */
      0x0000, 0xbb80, 0x0000, 0x0000, /* 36 */
      0x0000, 0x2000, 0x0000, 0x0000, /* 3e */
      0x0000, 0x0000, 0x0000, 0x0000, /* 46 */
      0x0000, 0x0000, 0xf83e, 0xffff, /* 4e */
      0x0000, 0x0000, 0x0000, 0xf83e, /* 56 */
      0x0008, 0x0000, 0x0000, 0x0000, /* 5e */
      0xb032, 0x3e00, 0x0000, 0x0000, /* 66 */
      0x0000, 0x0000, 0x0000, 0x0000, /* 6e */
      0x0000, 0x0000, 0x0000, 0x0006, /* 76 */
      0x0001, 0x0000, 0x574d, 0x4c12, /* 7e */
      0x0000, 0x0000 /* virtual hp mixers */
};

/* virtual HP mixers regs */
#define HPL_MIXER 0x80
#define HPR_MIXER 0x82

static const char *wm9712_alc_select[] = {"None", "Left", "Right", "Stereo"};
static const char *wm9712_alc_mux[] = {"Stereo", "Left", "Right", "None"};
static const char *wm9712_out3_src[] = {"Left", "VREF", "Left + Right",
      "Mono"};
static const char *wm9712_spk_src[] = {"Speaker Mix", "Headphone Mix"};
static const char *wm9712_rec_adc[] = {"Stereo", "Left", "Right", "Mute"};
static const char *wm9712_base[] = {"Linear Control", "Adaptive Boost"};
static const char *wm9712_rec_gain[] = {"+1.5dB Steps", "+0.75dB Steps"};
static const char *wm9712_mic[] = {"Mic 1", "Differential", "Mic 2",
      "Stereo"};
static const char *wm9712_rec_sel[] = {"Mic", "NC", "NC", "Speaker Mixer",
      "Line", "Headphone Mixer", "Phone Mixer", "Phone"};
static const char *wm9712_ng_type[] = {"Constant Gain", "Mute"};
static const char *wm9712_diff_sel[] = {"Mic", "Line"};

static const struct soc_enum wm9712_enum[] = {
SOC_ENUM_SINGLE(AC97_PCI_SVID, 14, 4, wm9712_alc_select),
SOC_ENUM_SINGLE(AC97_VIDEO, 12, 4, wm9712_alc_mux),
SOC_ENUM_SINGLE(AC97_AUX, 9, 4, wm9712_out3_src),
SOC_ENUM_SINGLE(AC97_AUX, 8, 2, wm9712_spk_src),
SOC_ENUM_SINGLE(AC97_REC_SEL, 12, 4, wm9712_rec_adc),
SOC_ENUM_SINGLE(AC97_MASTER_TONE, 15, 2, wm9712_base),
SOC_ENUM_DOUBLE(AC97_REC_GAIN, 14, 6, 2, wm9712_rec_gain),
SOC_ENUM_SINGLE(AC97_MIC, 5, 4, wm9712_mic),
SOC_ENUM_SINGLE(AC97_REC_SEL, 8, 8, wm9712_rec_sel),
SOC_ENUM_SINGLE(AC97_REC_SEL, 0, 8, wm9712_rec_sel),
SOC_ENUM_SINGLE(AC97_PCI_SVID, 5, 2, wm9712_ng_type),
SOC_ENUM_SINGLE(0x5c, 8, 2, wm9712_diff_sel),
};

static const struct snd_kcontrol_new wm9712_snd_ac97_controls[] = {
SOC_DOUBLE("Speaker Playback Volume", AC97_MASTER, 8, 0, 31, 1),
SOC_SINGLE("Speaker Playback Switch", AC97_MASTER, 15, 1, 1),
SOC_DOUBLE("Headphone Playback Volume", AC97_HEADPHONE, 8, 0, 31, 1),
SOC_SINGLE("Headphone Playback Switch", AC97_HEADPHONE, 15, 1, 1),
SOC_DOUBLE("PCM Playback Volume", AC97_PCM, 8, 0, 31, 1),

SOC_SINGLE("Speaker Playback ZC Switch", AC97_MASTER, 7, 1, 0),
SOC_SINGLE("Speaker Playback Invert Switch", AC97_MASTER, 6, 1, 0),
SOC_SINGLE("Headphone Playback ZC Switch", AC97_HEADPHONE, 7, 1, 0),
SOC_SINGLE("Mono Playback ZC Switch", AC97_MASTER_MONO, 7, 1, 0),
SOC_SINGLE("Mono Playback Volume", AC97_MASTER_MONO, 0, 31, 1),
SOC_SINGLE("Mono Playback Switch", AC97_MASTER_MONO, 15, 1, 1),

SOC_SINGLE("ALC Target Volume", AC97_CODEC_CLASS_REV, 12, 15, 0),
SOC_SINGLE("ALC Hold Time", AC97_CODEC_CLASS_REV, 8, 15, 0),
SOC_SINGLE("ALC Decay Time", AC97_CODEC_CLASS_REV, 4, 15, 0),
SOC_SINGLE("ALC Attack Time", AC97_CODEC_CLASS_REV, 0, 15, 0),
SOC_ENUM("ALC Function", wm9712_enum[0]),
SOC_SINGLE("ALC Max Volume", AC97_PCI_SVID, 11, 7, 0),
SOC_SINGLE("ALC ZC Timeout", AC97_PCI_SVID, 9, 3, 1),
SOC_SINGLE("ALC ZC Switch", AC97_PCI_SVID, 8, 1, 0),
SOC_SINGLE("ALC NG Switch", AC97_PCI_SVID, 7, 1, 0),
SOC_ENUM("ALC NG Type", wm9712_enum[10]),
SOC_SINGLE("ALC NG Threshold", AC97_PCI_SVID, 0, 31, 1),

SOC_SINGLE("Mic Headphone  Volume", AC97_VIDEO, 12, 7, 1),
SOC_SINGLE("ALC Headphone Volume", AC97_VIDEO, 7, 7, 1),

SOC_SINGLE("Out3 Switch", AC97_AUX, 15, 1, 1),
SOC_SINGLE("Out3 ZC Switch", AC97_AUX, 7, 1, 1),
SOC_SINGLE("Out3 Volume", AC97_AUX, 0, 31, 1),

SOC_SINGLE("PCBeep Bypass Headphone Volume", AC97_PC_BEEP, 12, 7, 1),
SOC_SINGLE("PCBeep Bypass Speaker Volume", AC97_PC_BEEP, 8, 7, 1),
SOC_SINGLE("PCBeep Bypass Phone Volume", AC97_PC_BEEP, 4, 7, 1),

SOC_SINGLE("Aux Playback Headphone Volume", AC97_CD, 12, 7, 1),
SOC_SINGLE("Aux Playback Speaker Volume", AC97_CD, 8, 7, 1),
SOC_SINGLE("Aux Playback Phone Volume", AC97_CD, 4, 7, 1),

SOC_SINGLE("Phone Volume", AC97_PHONE, 0, 15, 1),
SOC_DOUBLE("Line Capture Volume", AC97_LINE, 8, 0, 31, 1),

SOC_SINGLE("Capture 20dB Boost Switch", AC97_REC_SEL, 14, 1, 0),
SOC_SINGLE("Capture to Phone 20dB Boost Switch", AC97_REC_SEL, 11, 1, 1),

SOC_SINGLE("3D Upper Cut-off Switch", AC97_3D_CONTROL, 5, 1, 1),
SOC_SINGLE("3D Lower Cut-off Switch", AC97_3D_CONTROL, 4, 1, 1),
SOC_SINGLE("3D Playback Volume", AC97_3D_CONTROL, 0, 15, 0),

SOC_ENUM("Bass Control", wm9712_enum[5]),
SOC_SINGLE("Bass Cut-off Switch", AC97_MASTER_TONE, 12, 1, 1),
SOC_SINGLE("Tone Cut-off Switch", AC97_MASTER_TONE, 4, 1, 1),
SOC_SINGLE("Playback Attenuate (-6dB) Switch", AC97_MASTER_TONE, 6, 1, 0),
SOC_SINGLE("Bass Volume", AC97_MASTER_TONE, 8, 15, 1),
SOC_SINGLE("Treble Volume", AC97_MASTER_TONE, 0, 15, 1),

SOC_SINGLE("Capture ADC Switch", AC97_REC_GAIN, 15, 1, 1),
SOC_ENUM("Capture Volume Steps", wm9712_enum[6]),
SOC_DOUBLE("Capture Volume", AC97_REC_GAIN, 8, 0, 63, 1),
SOC_SINGLE("Capture ZC Switch", AC97_REC_GAIN, 7, 1, 0),

SOC_SINGLE("Mic 1 Volume", AC97_MIC, 8, 31, 1),
SOC_SINGLE("Mic 2 Volume", AC97_MIC, 0, 31, 1),
SOC_SINGLE("Mic 20dB Boost Switch", AC97_MIC, 7, 1, 0),
};

/* We have to create a fake left and right HP mixers because
 * the codec only has a single control that is shared by both channels.
 * This makes it impossible to determine the audio path.
 */
static int mixer_event(struct snd_soc_dapm_widget *w,
      struct snd_kcontrol *k, int event)
{
      u16 l, r, beep, line, phone, mic, pcm, aux;

      l = ac97_read(w->codec, HPL_MIXER);
      r = ac97_read(w->codec, HPR_MIXER);
      beep = ac97_read(w->codec, AC97_PC_BEEP);
      mic = ac97_read(w->codec, AC97_VIDEO);
      phone = ac97_read(w->codec, AC97_PHONE);
      line = ac97_read(w->codec, AC97_LINE);
      pcm = ac97_read(w->codec, AC97_PCM);
      aux = ac97_read(w->codec, AC97_CD);

      if (l & 0x1 || r & 0x1)
            ac97_write(w->codec, AC97_VIDEO, mic & 0x7fff);
      else
            ac97_write(w->codec, AC97_VIDEO, mic | 0x8000);

      if (l & 0x2 || r & 0x2)
            ac97_write(w->codec, AC97_PCM, pcm & 0x7fff);
      else
            ac97_write(w->codec, AC97_PCM, pcm | 0x8000);

      if (l & 0x4 || r & 0x4)
            ac97_write(w->codec, AC97_LINE, line & 0x7fff);
      else
            ac97_write(w->codec, AC97_LINE, line | 0x8000);

      if (l & 0x8 || r & 0x8)
            ac97_write(w->codec, AC97_PHONE, phone & 0x7fff);
      else
            ac97_write(w->codec, AC97_PHONE, phone | 0x8000);

      if (l & 0x10 || r & 0x10)
            ac97_write(w->codec, AC97_CD, aux & 0x7fff);
      else
            ac97_write(w->codec, AC97_CD, aux | 0x8000);

      if (l & 0x20 || r & 0x20)
            ac97_write(w->codec, AC97_PC_BEEP, beep & 0x7fff);
      else
            ac97_write(w->codec, AC97_PC_BEEP, beep | 0x8000);

      return 0;
}

/* Left Headphone Mixers */
static const struct snd_kcontrol_new wm9712_hpl_mixer_controls[] = {
      SOC_DAPM_SINGLE("PCBeep Bypass Switch", HPL_MIXER, 5, 1, 0),
      SOC_DAPM_SINGLE("Aux Playback Switch", HPL_MIXER, 4, 1, 0),
      SOC_DAPM_SINGLE("Phone Bypass Switch", HPL_MIXER, 3, 1, 0),
      SOC_DAPM_SINGLE("Line Bypass Switch", HPL_MIXER, 2, 1, 0),
      SOC_DAPM_SINGLE("PCM Playback Switch", HPL_MIXER, 1, 1, 0),
      SOC_DAPM_SINGLE("Mic Sidetone Switch", HPL_MIXER, 0, 1, 0),
};

/* Right Headphone Mixers */
static const struct snd_kcontrol_new wm9712_hpr_mixer_controls[] = {
      SOC_DAPM_SINGLE("PCBeep Bypass Switch", HPR_MIXER, 5, 1, 0),
      SOC_DAPM_SINGLE("Aux Playback Switch", HPR_MIXER, 4, 1, 0),
      SOC_DAPM_SINGLE("Phone Bypass Switch", HPR_MIXER, 3, 1, 0),
      SOC_DAPM_SINGLE("Line Bypass Switch", HPR_MIXER, 2, 1, 0),
      SOC_DAPM_SINGLE("PCM Playback Switch", HPR_MIXER, 1, 1, 0),
      SOC_DAPM_SINGLE("Mic Sidetone Switch", HPR_MIXER, 0, 1, 0),
};

/* Speaker Mixer */
static const struct snd_kcontrol_new wm9712_speaker_mixer_controls[] = {
      SOC_DAPM_SINGLE("PCBeep Bypass Switch", AC97_PC_BEEP, 11, 1, 1),
      SOC_DAPM_SINGLE("Aux Playback Switch", AC97_CD, 11, 1, 1),
      SOC_DAPM_SINGLE("Phone Bypass Switch", AC97_PHONE, 14, 1, 1),
      SOC_DAPM_SINGLE("Line Bypass Switch", AC97_LINE, 14, 1, 1),
      SOC_DAPM_SINGLE("PCM Playback Switch", AC97_PCM, 14, 1, 1),
};

/* Phone Mixer */
static const struct snd_kcontrol_new wm9712_phone_mixer_controls[] = {
      SOC_DAPM_SINGLE("PCBeep Bypass Switch", AC97_PC_BEEP, 7, 1, 1),
      SOC_DAPM_SINGLE("Aux Playback Switch", AC97_CD, 7, 1, 1),
      SOC_DAPM_SINGLE("Line Bypass Switch", AC97_LINE, 13, 1, 1),
      SOC_DAPM_SINGLE("PCM Playback Switch", AC97_PCM, 13, 1, 1),
      SOC_DAPM_SINGLE("Mic 1 Sidetone Switch", AC97_MIC, 14, 1, 1),
      SOC_DAPM_SINGLE("Mic 2 Sidetone Switch", AC97_MIC, 13, 1, 1),
};

/* ALC headphone mux */
static const struct snd_kcontrol_new wm9712_alc_mux_controls =
SOC_DAPM_ENUM("Route", wm9712_enum[1]);

/* out 3 mux */
static const struct snd_kcontrol_new wm9712_out3_mux_controls =
SOC_DAPM_ENUM("Route", wm9712_enum[2]);

/* spk mux */
static const struct snd_kcontrol_new wm9712_spk_mux_controls =
SOC_DAPM_ENUM("Route", wm9712_enum[3]);

/* Capture to Phone mux */
static const struct snd_kcontrol_new wm9712_capture_phone_mux_controls =
SOC_DAPM_ENUM("Route", wm9712_enum[4]);

/* Capture left select */
static const struct snd_kcontrol_new wm9712_capture_selectl_controls =
SOC_DAPM_ENUM("Route", wm9712_enum[8]);

/* Capture right select */
static const struct snd_kcontrol_new wm9712_capture_selectr_controls =
SOC_DAPM_ENUM("Route", wm9712_enum[9]);

/* Mic select */
static const struct snd_kcontrol_new wm9712_mic_src_controls =
SOC_DAPM_ENUM("Route", wm9712_enum[7]);

/* diff select */
static const struct snd_kcontrol_new wm9712_diff_sel_controls =
SOC_DAPM_ENUM("Route", wm9712_enum[11]);

static const struct snd_soc_dapm_widget wm9712_dapm_widgets[] = {
SND_SOC_DAPM_MUX("ALC Sidetone Mux", SND_SOC_NOPM, 0, 0,
      &wm9712_alc_mux_controls),
SND_SOC_DAPM_MUX("Out3 Mux", SND_SOC_NOPM, 0, 0,
      &wm9712_out3_mux_controls),
SND_SOC_DAPM_MUX("Speaker Mux", SND_SOC_NOPM, 0, 0,
      &wm9712_spk_mux_controls),
SND_SOC_DAPM_MUX("Capture Phone Mux", SND_SOC_NOPM, 0, 0,
      &wm9712_capture_phone_mux_controls),
SND_SOC_DAPM_MUX("Left Capture Select", SND_SOC_NOPM, 0, 0,
      &wm9712_capture_selectl_controls),
SND_SOC_DAPM_MUX("Right Capture Select", SND_SOC_NOPM, 0, 0,
      &wm9712_capture_selectr_controls),
SND_SOC_DAPM_MUX("Mic Select Source", SND_SOC_NOPM, 0, 0,
      &wm9712_mic_src_controls),
SND_SOC_DAPM_MUX("Differential Source", SND_SOC_NOPM, 0, 0,
      &wm9712_diff_sel_controls),
SND_SOC_DAPM_MIXER("AC97 Mixer", SND_SOC_NOPM, 0, 0, NULL, 0),
SND_SOC_DAPM_MIXER_E("Left HP Mixer", AC97_INT_PAGING, 9, 1,
      &wm9712_hpl_mixer_controls[0], ARRAY_SIZE(wm9712_hpl_mixer_controls),
      mixer_event, SND_SOC_DAPM_POST_REG),
SND_SOC_DAPM_MIXER_E("Right HP Mixer", AC97_INT_PAGING, 8, 1,
      &wm9712_hpr_mixer_controls[0], ARRAY_SIZE(wm9712_hpr_mixer_controls),
       mixer_event, SND_SOC_DAPM_POST_REG),
SND_SOC_DAPM_MIXER("Phone Mixer", AC97_INT_PAGING, 6, 1,
      &wm9712_phone_mixer_controls[0], ARRAY_SIZE(wm9712_phone_mixer_controls)),
SND_SOC_DAPM_MIXER("Speaker Mixer", AC97_INT_PAGING, 7, 1,
      &wm9712_speaker_mixer_controls[0],
      ARRAY_SIZE(wm9712_speaker_mixer_controls)),
SND_SOC_DAPM_MIXER("Mono Mixer", SND_SOC_NOPM, 0, 0, NULL, 0),
SND_SOC_DAPM_DAC("Left DAC", "Left HiFi Playback", AC97_INT_PAGING, 14, 1),
SND_SOC_DAPM_DAC("Right DAC", "Right HiFi Playback", AC97_INT_PAGING, 13, 1),
SND_SOC_DAPM_DAC("Aux DAC", "Aux Playback", SND_SOC_NOPM, 0, 0),
SND_SOC_DAPM_ADC("Left ADC", "Left HiFi Capture", AC97_INT_PAGING, 12, 1),
SND_SOC_DAPM_ADC("Right ADC", "Right HiFi Capture", AC97_INT_PAGING, 11, 1),
SND_SOC_DAPM_PGA("Headphone PGA", AC97_INT_PAGING, 4, 1, NULL, 0),
SND_SOC_DAPM_PGA("Speaker PGA", AC97_INT_PAGING, 3, 1, NULL, 0),
SND_SOC_DAPM_PGA("Out 3 PGA", AC97_INT_PAGING, 5, 1, NULL, 0),
SND_SOC_DAPM_PGA("Line PGA", AC97_INT_PAGING, 2, 1, NULL, 0),
SND_SOC_DAPM_PGA("Phone PGA", AC97_INT_PAGING, 1, 1, NULL, 0),
SND_SOC_DAPM_PGA("Mic PGA", AC97_INT_PAGING, 0, 1, NULL, 0),
SND_SOC_DAPM_MICBIAS("Mic Bias", AC97_INT_PAGING, 10, 1),
SND_SOC_DAPM_OUTPUT("MONOOUT"),
SND_SOC_DAPM_OUTPUT("HPOUTL"),
SND_SOC_DAPM_OUTPUT("HPOUTR"),
SND_SOC_DAPM_OUTPUT("LOUT2"),
SND_SOC_DAPM_OUTPUT("ROUT2"),
SND_SOC_DAPM_OUTPUT("OUT3"),
SND_SOC_DAPM_INPUT("LINEINL"),
SND_SOC_DAPM_INPUT("LINEINR"),
SND_SOC_DAPM_INPUT("PHONE"),
SND_SOC_DAPM_INPUT("PCBEEP"),
SND_SOC_DAPM_INPUT("MIC1"),
SND_SOC_DAPM_INPUT("MIC2"),
};

static const struct snd_soc_dapm_route audio_map[] = {
      /* virtual mixer - mixes left & right channels for spk and mono */
      {"AC97 Mixer", NULL, "Left DAC"},
      {"AC97 Mixer", NULL, "Right DAC"},

      /* Left HP mixer */
      {"Left HP Mixer", "PCBeep Bypass Switch", "PCBEEP"},
      {"Left HP Mixer", "Aux Playback Switch",  "Aux DAC"},
      {"Left HP Mixer", "Phone Bypass Switch",  "Phone PGA"},
      {"Left HP Mixer", "Line Bypass Switch",   "Line PGA"},
      {"Left HP Mixer", "PCM Playback Switch",  "Left DAC"},
      {"Left HP Mixer", "Mic Sidetone Switch",  "Mic PGA"},
      {"Left HP Mixer", NULL,  "ALC Sidetone Mux"},

      /* Right HP mixer */
      {"Right HP Mixer", "PCBeep Bypass Switch", "PCBEEP"},
      {"Right HP Mixer", "Aux Playback Switch",  "Aux DAC"},
      {"Right HP Mixer", "Phone Bypass Switch",  "Phone PGA"},
      {"Right HP Mixer", "Line Bypass Switch",   "Line PGA"},
      {"Right HP Mixer", "PCM Playback Switch",  "Right DAC"},
      {"Right HP Mixer", "Mic Sidetone Switch",  "Mic PGA"},
      {"Right HP Mixer", NULL,  "ALC Sidetone Mux"},

      /* speaker mixer */
      {"Speaker Mixer", "PCBeep Bypass Switch", "PCBEEP"},
      {"Speaker Mixer", "Line Bypass Switch",   "Line PGA"},
      {"Speaker Mixer", "PCM Playback Switch",  "AC97 Mixer"},
      {"Speaker Mixer", "Phone Bypass Switch",  "Phone PGA"},
      {"Speaker Mixer", "Aux Playback Switch",  "Aux DAC"},

      /* Phone mixer */
      {"Phone Mixer", "PCBeep Bypass Switch",  "PCBEEP"},
      {"Phone Mixer", "Line Bypass Switch",    "Line PGA"},
      {"Phone Mixer", "Aux Playback Switch",   "Aux DAC"},
      {"Phone Mixer", "PCM Playback Switch",   "AC97 Mixer"},
      {"Phone Mixer", "Mic 1 Sidetone Switch", "Mic PGA"},
      {"Phone Mixer", "Mic 2 Sidetone Switch", "Mic PGA"},

      /* inputs */
      {"Line PGA", NULL, "LINEINL"},
      {"Line PGA", NULL, "LINEINR"},
      {"Phone PGA", NULL, "PHONE"},
      {"Mic PGA", NULL, "MIC1"},
      {"Mic PGA", NULL, "MIC2"},

      /* left capture selector */
      {"Left Capture Select", "Mic", "MIC1"},
      {"Left Capture Select", "Speaker Mixer", "Speaker Mixer"},
      {"Left Capture Select", "Line", "LINEINL"},
      {"Left Capture Select", "Headphone Mixer", "Left HP Mixer"},
      {"Left Capture Select", "Phone Mixer", "Phone Mixer"},
      {"Left Capture Select", "Phone", "PHONE"},

      /* right capture selector */
      {"Right Capture Select", "Mic", "MIC2"},
      {"Right Capture Select", "Speaker Mixer", "Speaker Mixer"},
      {"Right Capture Select", "Line", "LINEINR"},
      {"Right Capture Select", "Headphone Mixer", "Right HP Mixer"},
      {"Right Capture Select", "Phone Mixer", "Phone Mixer"},
      {"Right Capture Select", "Phone", "PHONE"},

      /* ALC Sidetone */
      {"ALC Sidetone Mux", "Stereo", "Left Capture Select"},
      {"ALC Sidetone Mux", "Stereo", "Right Capture Select"},
      {"ALC Sidetone Mux", "Left", "Left Capture Select"},
      {"ALC Sidetone Mux", "Right", "Right Capture Select"},

      /* ADC's */
      {"Left ADC", NULL, "Left Capture Select"},
      {"Right ADC", NULL, "Right Capture Select"},

      /* outputs */
      {"MONOOUT", NULL, "Phone Mixer"},
      {"HPOUTL", NULL, "Headphone PGA"},
      {"Headphone PGA", NULL, "Left HP Mixer"},
      {"HPOUTR", NULL, "Headphone PGA"},
      {"Headphone PGA", NULL, "Right HP Mixer"},

      /* mono mixer */
      {"Mono Mixer", NULL, "Left HP Mixer"},
      {"Mono Mixer", NULL, "Right HP Mixer"},

      /* Out3 Mux */
      {"Out3 Mux", "Left", "Left HP Mixer"},
      {"Out3 Mux", "Mono", "Phone Mixer"},
      {"Out3 Mux", "Left + Right", "Mono Mixer"},
      {"Out 3 PGA", NULL, "Out3 Mux"},
      {"OUT3", NULL, "Out 3 PGA"},

      /* speaker Mux */
      {"Speaker Mux", "Speaker Mix", "Speaker Mixer"},
      {"Speaker Mux", "Headphone Mix", "Mono Mixer"},
      {"Speaker PGA", NULL, "Speaker Mux"},
      {"LOUT2", NULL, "Speaker PGA"},
      {"ROUT2", NULL, "Speaker PGA"},
};

static int wm9712_add_widgets(struct snd_soc_codec *codec)
{
      snd_soc_dapm_new_controls(codec, wm9712_dapm_widgets,
                          ARRAY_SIZE(wm9712_dapm_widgets));

      snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map));

      snd_soc_dapm_new_widgets(codec);
      return 0;
}

static unsigned int ac97_read(struct snd_soc_codec *codec,
      unsigned int reg)
{
      u16 *cache = codec->reg_cache;

      if (reg == AC97_RESET || reg == AC97_GPIO_STATUS ||
            reg == AC97_VENDOR_ID1 || reg == AC97_VENDOR_ID2 ||
            reg == AC97_REC_GAIN)
            return soc_ac97_ops.read(codec->ac97, reg);
      else {
            reg = reg >> 1;

            if (reg >= (ARRAY_SIZE(wm9712_reg)))
                  return -EIO;

            return cache[reg];
      }
}

static int ac97_write(struct snd_soc_codec *codec, unsigned int reg,
      unsigned int val)
{
      u16 *cache = codec->reg_cache;

      soc_ac97_ops.write(codec->ac97, reg, val);
      reg = reg >> 1;
      if (reg < (ARRAY_SIZE(wm9712_reg)))
            cache[reg] = val;

      return 0;
}

static int ac97_prepare(struct snd_pcm_substream *substream,
                  struct snd_soc_dai *dai)
{
      struct snd_pcm_runtime *runtime = substream->runtime;
      struct snd_soc_pcm_runtime *rtd = substream->private_data;
      struct snd_soc_device *socdev = rtd->socdev;
      struct snd_soc_codec *codec = socdev->card->codec;
      int reg;
      u16 vra;

      vra = ac97_read(codec, AC97_EXTENDED_STATUS);
      ac97_write(codec, AC97_EXTENDED_STATUS, vra | 0x1);

      if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
            reg = AC97_PCM_FRONT_DAC_RATE;
      else
            reg = AC97_PCM_LR_ADC_RATE;

      return ac97_write(codec, reg, runtime->rate);
}

static int ac97_aux_prepare(struct snd_pcm_substream *substream,
                      struct snd_soc_dai *dai)
{
      struct snd_pcm_runtime *runtime = substream->runtime;
      struct snd_soc_pcm_runtime *rtd = substream->private_data;
      struct snd_soc_device *socdev = rtd->socdev;
      struct snd_soc_codec *codec = socdev->card->codec;
      u16 vra, xsle;

      vra = ac97_read(codec, AC97_EXTENDED_STATUS);
      ac97_write(codec, AC97_EXTENDED_STATUS, vra | 0x1);
      xsle = ac97_read(codec, AC97_PCI_SID);
      ac97_write(codec, AC97_PCI_SID, xsle | 0x8000);

      if (substream->stream != SNDRV_PCM_STREAM_PLAYBACK)
            return -ENODEV;

      return ac97_write(codec, AC97_PCM_SURR_DAC_RATE, runtime->rate);
}

#define WM9712_AC97_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 |\
            SNDRV_PCM_RATE_22050 | SNDRV_PCM_RATE_44100 |\
            SNDRV_PCM_RATE_48000)

static struct snd_soc_dai_ops wm9712_dai_ops_hifi = {
      .prepare    = ac97_prepare,
};

static struct snd_soc_dai_ops wm9712_dai_ops_aux = {
      .prepare    = ac97_aux_prepare,
};

struct snd_soc_dai wm9712_dai[] = {
{
      .name = "AC97 HiFi",
      .ac97_control = 1,
      .playback = {
            .stream_name = "HiFi Playback",
            .channels_min = 1,
            .channels_max = 2,
            .rates = WM9712_AC97_RATES,
            .formats = SND_SOC_STD_AC97_FMTS,},
      .capture = {
            .stream_name = "HiFi Capture",
            .channels_min = 1,
            .channels_max = 2,
            .rates = WM9712_AC97_RATES,
            .formats = SND_SOC_STD_AC97_FMTS,},
      .ops = &wm9712_dai_ops_hifi,
},
{
      .name = "AC97 Aux",
      .playback = {
            .stream_name = "Aux Playback",
            .channels_min = 1,
            .channels_max = 1,
            .rates = WM9712_AC97_RATES,
            .formats = SND_SOC_STD_AC97_FMTS,},
      .ops = &wm9712_dai_ops_aux,
}
};
EXPORT_SYMBOL_GPL(wm9712_dai);

static int wm9712_set_bias_level(struct snd_soc_codec *codec,
                         enum snd_soc_bias_level level)
{
      switch (level) {
      case SND_SOC_BIAS_ON:
      case SND_SOC_BIAS_PREPARE:
            break;
      case SND_SOC_BIAS_STANDBY:
            ac97_write(codec, AC97_POWERDOWN, 0x0000);
            break;
      case SND_SOC_BIAS_OFF:
            /* disable everything including AC link */
            ac97_write(codec, AC97_EXTENDED_MSTATUS, 0xffff);
            ac97_write(codec, AC97_POWERDOWN, 0xffff);
            break;
      }
      codec->bias_level = level;
      return 0;
}

static int wm9712_reset(struct snd_soc_codec *codec, int try_warm)
{
      if (try_warm && soc_ac97_ops.warm_reset) {
            soc_ac97_ops.warm_reset(codec->ac97);
            if (ac97_read(codec, 0) == wm9712_reg[0])
                  return 1;
      }

      soc_ac97_ops.reset(codec->ac97);
      if (soc_ac97_ops.warm_reset)
            soc_ac97_ops.warm_reset(codec->ac97);
      if (ac97_read(codec, 0) != wm9712_reg[0])
            goto err;
      return 0;

err:
      printk(KERN_ERR "WM9712 AC97 reset failed\n");
      return -EIO;
}

static int wm9712_soc_suspend(struct platform_device *pdev,
      pm_message_t state)
{
      struct snd_soc_device *socdev = platform_get_drvdata(pdev);
      struct snd_soc_codec *codec = socdev->card->codec;

      wm9712_set_bias_level(codec, SND_SOC_BIAS_OFF);
      return 0;
}

static int wm9712_soc_resume(struct platform_device *pdev)
{
      struct snd_soc_device *socdev = platform_get_drvdata(pdev);
      struct snd_soc_codec *codec = socdev->card->codec;
      int i, ret;
      u16 *cache = codec->reg_cache;

      ret = wm9712_reset(codec, 1);
      if (ret < 0) {
            printk(KERN_ERR "could not reset AC97 codec\n");
            return ret;
      }

      wm9712_set_bias_level(codec, SND_SOC_BIAS_STANDBY);

      if (ret == 0) {
            /* Sync reg_cache with the hardware after cold reset */
            for (i = 2; i < ARRAY_SIZE(wm9712_reg) << 1; i += 2) {
                  if (i == AC97_INT_PAGING || i == AC97_POWERDOWN ||
                      (i > 0x58 && i != 0x5c))
                        continue;
                  soc_ac97_ops.write(codec->ac97, i, cache[i>>1]);
            }
      }

      if (codec->suspend_bias_level == SND_SOC_BIAS_ON)
            wm9712_set_bias_level(codec, SND_SOC_BIAS_ON);

      return ret;
}

static int wm9712_soc_probe(struct platform_device *pdev)
{
      struct snd_soc_device *socdev = platform_get_drvdata(pdev);
      struct snd_soc_codec *codec;
      int ret = 0;

      printk(KERN_INFO "WM9711/WM9712 SoC Audio Codec %s\n", WM9712_VERSION);

      socdev->card->codec = kzalloc(sizeof(struct snd_soc_codec),
                              GFP_KERNEL);
      if (socdev->card->codec == NULL)
            return -ENOMEM;
      codec = socdev->card->codec;
      mutex_init(&codec->mutex);

      codec->reg_cache = kmemdup(wm9712_reg, sizeof(wm9712_reg), GFP_KERNEL);

      if (codec->reg_cache == NULL) {
            ret = -ENOMEM;
            goto cache_err;
      }
      codec->reg_cache_size = sizeof(wm9712_reg);
      codec->reg_cache_step = 2;

      codec->name = "WM9712";
      codec->owner = THIS_MODULE;
      codec->dai = wm9712_dai;
      codec->num_dai = ARRAY_SIZE(wm9712_dai);
      codec->write = ac97_write;
      codec->read = ac97_read;
      codec->set_bias_level = wm9712_set_bias_level;
      INIT_LIST_HEAD(&codec->dapm_widgets);
      INIT_LIST_HEAD(&codec->dapm_paths);

      ret = snd_soc_new_ac97_codec(codec, &soc_ac97_ops, 0);
      if (ret < 0) {
            printk(KERN_ERR "wm9712: failed to register AC97 codec\n");
            goto codec_err;
      }

      /* register pcms */
      ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1);
      if (ret < 0)
            goto pcm_err;

      ret = wm9712_reset(codec, 0);
      if (ret < 0) {
            printk(KERN_ERR "Failed to reset WM9712: AC97 link error\n");
            goto reset_err;
      }

      /* set alc mux to none */
      ac97_write(codec, AC97_VIDEO, ac97_read(codec, AC97_VIDEO) | 0x3000);

      wm9712_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
      snd_soc_add_controls(codec, wm9712_snd_ac97_controls,
                        ARRAY_SIZE(wm9712_snd_ac97_controls));
      wm9712_add_widgets(codec);
      ret = snd_soc_init_card(socdev);
      if (ret < 0) {
            printk(KERN_ERR "wm9712: failed to register card\n");
            goto reset_err;
      }

      return 0;

reset_err:
      snd_soc_free_pcms(socdev);

pcm_err:
      snd_soc_free_ac97_codec(codec);

codec_err:
      kfree(codec->reg_cache);

cache_err:
      kfree(socdev->card->codec);
      socdev->card->codec = NULL;
      return ret;
}

static int wm9712_soc_remove(struct platform_device *pdev)
{
      struct snd_soc_device *socdev = platform_get_drvdata(pdev);
      struct snd_soc_codec *codec = socdev->card->codec;

      if (codec == NULL)
            return 0;

      snd_soc_dapm_free(socdev);
      snd_soc_free_pcms(socdev);
      snd_soc_free_ac97_codec(codec);
      kfree(codec->reg_cache);
      kfree(codec);
      return 0;
}

struct snd_soc_codec_device soc_codec_dev_wm9712 = {
      .probe =    wm9712_soc_probe,
      .remove =   wm9712_soc_remove,
      .suspend =  wm9712_soc_suspend,
      .resume =   wm9712_soc_resume,
};
EXPORT_SYMBOL_GPL(soc_codec_dev_wm9712);

MODULE_DESCRIPTION("ASoC WM9711/WM9712 driver");
MODULE_AUTHOR("Liam Girdwood");
MODULE_LICENSE("GPL");

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