wm8510.c

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/*
 * wm8510.c  --  WM8510 ALSA Soc Audio driver
 *
 * Copyright 2006 Wolfson Microelectronics PLC.
 *
 * Author: Liam Girdwood <[email protected]>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 */

#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/delay.h>
#include <linux/pm.h>
#include <linux/i2c.h>
#include <linux/spi/spi.h>
#include <linux/slab.h>
#include <linux/of_device.h>
#include <linux/regmap.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
#include <sound/soc.h>
#include <sound/initval.h>

#include "wm8510.h"

/*
 * wm8510 register cache
 * We can't read the WM8510 register space when we are
 * using 2 wire for device control, so we cache them instead.
 */
static const struct reg_default wm8510_reg_defaults[] = {
    {  1, 0x0000 },
    {  2, 0x0000 },
    {  3, 0x0000 },
    {  4, 0x0050 },
    {  5, 0x0000 },
    {  6, 0x0140 },
    {  7, 0x0000 },
    {  8, 0x0000 },
    {  9, 0x0000 },
    { 10, 0x0000 },
    { 11, 0x00ff },
    { 12, 0x0000 },
    { 13, 0x0000 },
    { 14, 0x0100 },
    { 15, 0x00ff },
    { 16, 0x0000 },
    { 17, 0x0000 },
    { 18, 0x012c },
    { 19, 0x002c },
    { 20, 0x002c },
    { 21, 0x002c },
    { 22, 0x002c },
    { 23, 0x0000 },
    { 24, 0x0032 },
    { 25, 0x0000 },
    { 26, 0x0000 },
    { 27, 0x0000 },
    { 28, 0x0000 },
    { 29, 0x0000 },
    { 30, 0x0000 },
    { 31, 0x0000 },
    { 32, 0x0038 },
    { 33, 0x000b },
    { 34, 0x0032 },
    { 35, 0x0000 },
    { 36, 0x0008 },
    { 37, 0x000c },
    { 38, 0x0093 },
    { 39, 0x00e9 },
    { 40, 0x0000 },
    { 41, 0x0000 },
    { 42, 0x0000 },
    { 43, 0x0000 },
    { 44, 0x0003 },
    { 45, 0x0010 },
    { 46, 0x0000 },
    { 47, 0x0000 },
    { 48, 0x0000 },
    { 49, 0x0002 },
    { 50, 0x0001 },
    { 51, 0x0000 },
    { 52, 0x0000 },
    { 53, 0x0000 },
    { 54, 0x0039 },
    { 55, 0x0000 },
    { 56, 0x0001 },
};

static bool wm8510_volatile(struct device *dev, unsigned int reg)
{
    switch (reg) {
    case WM8510_RESET:
        return true;
    default:
        return false;
    }
}

#define WM8510_POWER1_BIASEN  0x08
#define WM8510_POWER1_BUFIOEN 0x10

#define wm8510_reset(c) snd_soc_write(c, WM8510_RESET, 0)

/* codec private data */
struct wm8510_priv {
    struct regmap *regmap;
};

static const char *wm8510_companding[] = { "Off", "NC", "u-law", "A-law" };
static const char *wm8510_deemp[] = { "None", "32kHz", "44.1kHz", "48kHz" };
static const char *wm8510_alc[] = { "ALC", "Limiter" };

static const struct soc_enum wm8510_enum[] = {
    SOC_ENUM_SINGLE(WM8510_COMP, 1, 4, wm8510_companding), /* adc */
    SOC_ENUM_SINGLE(WM8510_COMP, 3, 4, wm8510_companding), /* dac */
    SOC_ENUM_SINGLE(WM8510_DAC,  4, 4, wm8510_deemp),
    SOC_ENUM_SINGLE(WM8510_ALC3,  8, 2, wm8510_alc),
};

static const struct snd_kcontrol_new wm8510_snd_controls[] = {

SOC_SINGLE("Digital Loopback Switch", WM8510_COMP, 0, 1, 0),

SOC_ENUM("DAC Companding", wm8510_enum[1]),
SOC_ENUM("ADC Companding", wm8510_enum[0]),

SOC_ENUM("Playback De-emphasis", wm8510_enum[2]),
SOC_SINGLE("DAC Inversion Switch", WM8510_DAC, 0, 1, 0),

SOC_SINGLE("Master Playback Volume", WM8510_DACVOL, 0, 127, 0),

SOC_SINGLE("High Pass Filter Switch", WM8510_ADC, 8, 1, 0),
SOC_SINGLE("High Pass Cut Off", WM8510_ADC, 4, 7, 0),
SOC_SINGLE("ADC Inversion Switch", WM8510_COMP, 0, 1, 0),

SOC_SINGLE("Capture Volume", WM8510_ADCVOL,  0, 127, 0),

SOC_SINGLE("DAC Playback Limiter Switch", WM8510_DACLIM1,  8, 1, 0),
SOC_SINGLE("DAC Playback Limiter Decay", WM8510_DACLIM1,  4, 15, 0),
SOC_SINGLE("DAC Playback Limiter Attack", WM8510_DACLIM1,  0, 15, 0),

SOC_SINGLE("DAC Playback Limiter Threshold", WM8510_DACLIM2,  4, 7, 0),
SOC_SINGLE("DAC Playback Limiter Boost", WM8510_DACLIM2,  0, 15, 0),

SOC_SINGLE("ALC Enable Switch", WM8510_ALC1,  8, 1, 0),
SOC_SINGLE("ALC Capture Max Gain", WM8510_ALC1,  3, 7, 0),
SOC_SINGLE("ALC Capture Min Gain", WM8510_ALC1,  0, 7, 0),

SOC_SINGLE("ALC Capture ZC Switch", WM8510_ALC2,  8, 1, 0),
SOC_SINGLE("ALC Capture Hold", WM8510_ALC2,  4, 7, 0),
SOC_SINGLE("ALC Capture Target", WM8510_ALC2,  0, 15, 0),

SOC_ENUM("ALC Capture Mode", wm8510_enum[3]),
SOC_SINGLE("ALC Capture Decay", WM8510_ALC3,  4, 15, 0),
SOC_SINGLE("ALC Capture Attack", WM8510_ALC3,  0, 15, 0),

SOC_SINGLE("ALC Capture Noise Gate Switch", WM8510_NGATE,  3, 1, 0),
SOC_SINGLE("ALC Capture Noise Gate Threshold", WM8510_NGATE,  0, 7, 0),

SOC_SINGLE("Capture PGA ZC Switch", WM8510_INPPGA,  7, 1, 0),
SOC_SINGLE("Capture PGA Volume", WM8510_INPPGA,  0, 63, 0),

SOC_SINGLE("Speaker Playback ZC Switch", WM8510_SPKVOL,  7, 1, 0),
SOC_SINGLE("Speaker Playback Switch", WM8510_SPKVOL,  6, 1, 1),
SOC_SINGLE("Speaker Playback Volume", WM8510_SPKVOL,  0, 63, 0),
SOC_SINGLE("Speaker Boost", WM8510_OUTPUT, 2, 1, 0),

SOC_SINGLE("Capture Boost(+20dB)", WM8510_ADCBOOST,  8, 1, 0),
SOC_SINGLE("Mono Playback Switch", WM8510_MONOMIX, 6, 1, 1),
};

/* Speaker Output Mixer */
static const struct snd_kcontrol_new wm8510_speaker_mixer_controls[] = {
SOC_DAPM_SINGLE("Line Bypass Switch", WM8510_SPKMIX, 1, 1, 0),
SOC_DAPM_SINGLE("Aux Playback Switch", WM8510_SPKMIX, 5, 1, 0),
SOC_DAPM_SINGLE("PCM Playback Switch", WM8510_SPKMIX, 0, 1, 0),
};

/* Mono Output Mixer */
static const struct snd_kcontrol_new wm8510_mono_mixer_controls[] = {
SOC_DAPM_SINGLE("Line Bypass Switch", WM8510_MONOMIX, 1, 1, 0),
SOC_DAPM_SINGLE("Aux Playback Switch", WM8510_MONOMIX, 2, 1, 0),
SOC_DAPM_SINGLE("PCM Playback Switch", WM8510_MONOMIX, 0, 1, 0),
};

static const struct snd_kcontrol_new wm8510_boost_controls[] = {
SOC_DAPM_SINGLE("Mic PGA Switch", WM8510_INPPGA,  6, 1, 1),
SOC_DAPM_SINGLE("Aux Volume", WM8510_ADCBOOST, 0, 7, 0),
SOC_DAPM_SINGLE("Mic Volume", WM8510_ADCBOOST, 4, 7, 0),
};

static const struct snd_kcontrol_new wm8510_micpga_controls[] = {
SOC_DAPM_SINGLE("MICP Switch", WM8510_INPUT, 0, 1, 0),
SOC_DAPM_SINGLE("MICN Switch", WM8510_INPUT, 1, 1, 0),
SOC_DAPM_SINGLE("AUX Switch", WM8510_INPUT, 2, 1, 0),
};

static const struct snd_soc_dapm_widget wm8510_dapm_widgets[] = {
SND_SOC_DAPM_MIXER("Speaker Mixer", WM8510_POWER3, 2, 0,
    &wm8510_speaker_mixer_controls[0],
    ARRAY_SIZE(wm8510_speaker_mixer_controls)),
SND_SOC_DAPM_MIXER("Mono Mixer", WM8510_POWER3, 3, 0,
    &wm8510_mono_mixer_controls[0],
    ARRAY_SIZE(wm8510_mono_mixer_controls)),
SND_SOC_DAPM_DAC("DAC", "HiFi Playback", WM8510_POWER3, 0, 0),
SND_SOC_DAPM_ADC("ADC", "HiFi Capture", WM8510_POWER2, 0, 0),
SND_SOC_DAPM_PGA("Aux Input", WM8510_POWER1, 6, 0, NULL, 0),
SND_SOC_DAPM_PGA("SpkN Out", WM8510_POWER3, 5, 0, NULL, 0),
SND_SOC_DAPM_PGA("SpkP Out", WM8510_POWER3, 6, 0, NULL, 0),
SND_SOC_DAPM_PGA("Mono Out", WM8510_POWER3, 7, 0, NULL, 0),

SND_SOC_DAPM_MIXER("Mic PGA", WM8510_POWER2, 2, 0,
           &wm8510_micpga_controls[0],
           ARRAY_SIZE(wm8510_micpga_controls)),
SND_SOC_DAPM_MIXER("Boost Mixer", WM8510_POWER2, 4, 0,
    &wm8510_boost_controls[0],
    ARRAY_SIZE(wm8510_boost_controls)),

SND_SOC_DAPM_MICBIAS("Mic Bias", WM8510_POWER1, 4, 0),

SND_SOC_DAPM_INPUT("MICN"),
SND_SOC_DAPM_INPUT("MICP"),
SND_SOC_DAPM_INPUT("AUX"),
SND_SOC_DAPM_OUTPUT("MONOOUT"),
SND_SOC_DAPM_OUTPUT("SPKOUTP"),
SND_SOC_DAPM_OUTPUT("SPKOUTN"),
};

static const struct snd_soc_dapm_route wm8510_dapm_routes[] = {
    /* Mono output mixer */
    {"Mono Mixer", "PCM Playback Switch", "DAC"},
    {"Mono Mixer", "Aux Playback Switch", "Aux Input"},
    {"Mono Mixer", "Line Bypass Switch", "Boost Mixer"},

    /* Speaker output mixer */
    {"Speaker Mixer", "PCM Playback Switch", "DAC"},
    {"Speaker Mixer", "Aux Playback Switch", "Aux Input"},
    {"Speaker Mixer", "Line Bypass Switch", "Boost Mixer"},

    /* Outputs */
    {"Mono Out", NULL, "Mono Mixer"},
    {"MONOOUT", NULL, "Mono Out"},
    {"SpkN Out", NULL, "Speaker Mixer"},
    {"SpkP Out", NULL, "Speaker Mixer"},
    {"SPKOUTN", NULL, "SpkN Out"},
    {"SPKOUTP", NULL, "SpkP Out"},

    /* Microphone PGA */
    {"Mic PGA", "MICN Switch", "MICN"},
    {"Mic PGA", "MICP Switch", "MICP"},
    { "Mic PGA", "AUX Switch", "Aux Input" },

    /* Boost Mixer */
    {"Boost Mixer", "Mic PGA Switch", "Mic PGA"},
    {"Boost Mixer", "Mic Volume", "MICP"},
    {"Boost Mixer", "Aux Volume", "Aux Input"},

    {"ADC", NULL, "Boost Mixer"},
};

struct pll_ {
    unsigned int pre_div:4; /* prescale - 1 */
    unsigned int n:4;
    unsigned int k;
};

static struct pll_ pll_div;

/* The size in bits of the pll divide multiplied by 10
 * to allow rounding later */
#define FIXED_PLL_SIZE ((1 << 24) * 10)

static void pll_factors(unsigned int target, unsigned int source)
{
    unsigned long long Kpart;
    unsigned int K, Ndiv, Nmod;

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

    if ((Ndiv < 6) || (Ndiv > 12))
        printk(KERN_WARNING
            "WM8510 N value %u outwith recommended range!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 wm8510_set_dai_pll(struct snd_soc_dai *codec_dai, int pll_id,
        int source, unsigned int freq_in, unsigned int freq_out)
{
    struct snd_soc_codec *codec = codec_dai->codec;
    u16 reg;

    if (freq_in == 0 || freq_out == 0) {
        /* Clock CODEC directly from MCLK */
        reg = snd_soc_read(codec, WM8510_CLOCK);
        snd_soc_write(codec, WM8510_CLOCK, reg & 0x0ff);

        /* Turn off PLL */
        reg = snd_soc_read(codec, WM8510_POWER1);
        snd_soc_write(codec, WM8510_POWER1, reg & 0x1df);
        return 0;
    }

    pll_factors(freq_out*4, freq_in);

    snd_soc_write(codec, WM8510_PLLN, (pll_div.pre_div << 4) | pll_div.n);
    snd_soc_write(codec, WM8510_PLLK1, pll_div.k >> 18);
    snd_soc_write(codec, WM8510_PLLK2, (pll_div.k >> 9) & 0x1ff);
    snd_soc_write(codec, WM8510_PLLK3, pll_div.k & 0x1ff);
    reg = snd_soc_read(codec, WM8510_POWER1);
    snd_soc_write(codec, WM8510_POWER1, reg | 0x020);

    /* Run CODEC from PLL instead of MCLK */
    reg = snd_soc_read(codec, WM8510_CLOCK);
    snd_soc_write(codec, WM8510_CLOCK, reg | 0x100);

    return 0;
}

/*
 * Configure WM8510 clock dividers.
 */
static int wm8510_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 WM8510_OPCLKDIV:
        reg = snd_soc_read(codec, WM8510_GPIO) & 0x1cf;
        snd_soc_write(codec, WM8510_GPIO, reg | div);
        break;
    case WM8510_MCLKDIV:
        reg = snd_soc_read(codec, WM8510_CLOCK) & 0x11f;
        snd_soc_write(codec, WM8510_CLOCK, reg | div);
        break;
    case WM8510_ADCCLK:
        reg = snd_soc_read(codec, WM8510_ADC) & 0x1f7;
        snd_soc_write(codec, WM8510_ADC, reg | div);
        break;
    case WM8510_DACCLK:
        reg = snd_soc_read(codec, WM8510_DAC) & 0x1f7;
        snd_soc_write(codec, WM8510_DAC, reg | div);
        break;
    case WM8510_BCLKDIV:
        reg = snd_soc_read(codec, WM8510_CLOCK) & 0x1e3;
        snd_soc_write(codec, WM8510_CLOCK, reg | div);
        break;
    default:
        return -EINVAL;
    }

    return 0;
}

static int wm8510_set_dai_fmt(struct snd_soc_dai *codec_dai,
        unsigned int fmt)
{
    struct snd_soc_codec *codec = codec_dai->codec;
    u16 iface = 0;
    u16 clk = snd_soc_read(codec, WM8510_CLOCK) & 0x1fe;

    /* set master/slave audio interface */
    switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
    case SND_SOC_DAIFMT_CBM_CFM:
        clk |= 0x0001;
        break;
    case SND_SOC_DAIFMT_CBS_CFS:
        break;
    default:
        return -EINVAL;
    }

    /* interface format */
    switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
    case SND_SOC_DAIFMT_I2S:
        iface |= 0x0010;
        break;
    case SND_SOC_DAIFMT_RIGHT_J:
        break;
    case SND_SOC_DAIFMT_LEFT_J:
        iface |= 0x0008;
        break;
    case SND_SOC_DAIFMT_DSP_A:
        iface |= 0x00018;
        break;
    default:
        return -EINVAL;
    }

    /* clock inversion */
    switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
    case SND_SOC_DAIFMT_NB_NF:
        break;
    case SND_SOC_DAIFMT_IB_IF:
        iface |= 0x0180;
        break;
    case SND_SOC_DAIFMT_IB_NF:
        iface |= 0x0100;
        break;
    case SND_SOC_DAIFMT_NB_IF:
        iface |= 0x0080;
        break;
    default:
        return -EINVAL;
    }

    snd_soc_write(codec, WM8510_IFACE, iface);
    snd_soc_write(codec, WM8510_CLOCK, clk);
    return 0;
}

static int wm8510_pcm_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 iface = snd_soc_read(codec, WM8510_IFACE) & 0x19f;
    u16 adn = snd_soc_read(codec, WM8510_ADD) & 0x1f1;

    /* bit size */
    switch (params_format(params)) {
    case SNDRV_PCM_FORMAT_S16_LE:
        break;
    case SNDRV_PCM_FORMAT_S20_3LE:
        iface |= 0x0020;
        break;
    case SNDRV_PCM_FORMAT_S24_LE:
        iface |= 0x0040;
        break;
    case SNDRV_PCM_FORMAT_S32_LE:
        iface |= 0x0060;
        break;
    }

    /* filter coefficient */
    switch (params_rate(params)) {
    case 8000:
        adn |= 0x5 << 1;
        break;
    case 11025:
        adn |= 0x4 << 1;
        break;
    case 16000:
        adn |= 0x3 << 1;
        break;
    case 22050:
        adn |= 0x2 << 1;
        break;
    case 32000:
        adn |= 0x1 << 1;
        break;
    case 44100:
    case 48000:
        break;
    }

    snd_soc_write(codec, WM8510_IFACE, iface);
    snd_soc_write(codec, WM8510_ADD, adn);
    return 0;
}

static int wm8510_mute(struct snd_soc_dai *dai, int mute)
{
    struct snd_soc_codec *codec = dai->codec;
    u16 mute_reg = snd_soc_read(codec, WM8510_DAC) & 0xffbf;

    if (mute)
        snd_soc_write(codec, WM8510_DAC, mute_reg | 0x40);
    else
        snd_soc_write(codec, WM8510_DAC, mute_reg);
    return 0;
}

/* liam need to make this lower power with dapm */
static int wm8510_set_bias_level(struct snd_soc_codec *codec,
    enum snd_soc_bias_level level)
{
    struct wm8510_priv *wm8510 = snd_soc_codec_get_drvdata(codec);
    u16 power1 = snd_soc_read(codec, WM8510_POWER1) & ~0x3;

    switch (level) {
    case SND_SOC_BIAS_ON:
    case SND_SOC_BIAS_PREPARE:
        power1 |= 0x1;  /* VMID 50k */
        snd_soc_write(codec, WM8510_POWER1, power1);
        break;

    case SND_SOC_BIAS_STANDBY:
        power1 |= WM8510_POWER1_BIASEN | WM8510_POWER1_BUFIOEN;

        if (codec->dapm.bias_level == SND_SOC_BIAS_OFF) {
            regcache_sync(wm8510->regmap);

            /* Initial cap charge at VMID 5k */
            snd_soc_write(codec, WM8510_POWER1, power1 | 0x3);
            mdelay(100);
        }

        power1 |= 0x2;  /* VMID 500k */
        snd_soc_write(codec, WM8510_POWER1, power1);
        break;

    case SND_SOC_BIAS_OFF:
        snd_soc_write(codec, WM8510_POWER1, 0);
        snd_soc_write(codec, WM8510_POWER2, 0);
        snd_soc_write(codec, WM8510_POWER3, 0);
        break;
    }

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

#define WM8510_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 |\
        SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_22050 |\
        SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000)

#define WM8510_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\
    SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE)

static const struct snd_soc_dai_ops wm8510_dai_ops = {
    .hw_params  = wm8510_pcm_hw_params,
    .digital_mute   = wm8510_mute,
    .set_fmt    = wm8510_set_dai_fmt,
    .set_clkdiv = wm8510_set_dai_clkdiv,
    .set_pll    = wm8510_set_dai_pll,
};

static struct snd_soc_dai_driver wm8510_dai = {
    .name = "wm8510-hifi",
    .playback = {
        .stream_name = "Playback",
        .channels_min = 2,
        .channels_max = 2,
        .rates = WM8510_RATES,
        .formats = WM8510_FORMATS,},
    .capture = {
        .stream_name = "Capture",
        .channels_min = 2,
        .channels_max = 2,
        .rates = WM8510_RATES,
        .formats = WM8510_FORMATS,},
    .ops = &wm8510_dai_ops,
    .symmetric_rates = 1,
};

static int wm8510_suspend(struct snd_soc_codec *codec)
{
    wm8510_set_bias_level(codec, SND_SOC_BIAS_OFF);
    return 0;
}

static int wm8510_resume(struct snd_soc_codec *codec)
{
    wm8510_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
    return 0;
}

static int wm8510_probe(struct snd_soc_codec *codec)
{
    int ret;

    ret = snd_soc_codec_set_cache_io(codec, 7, 9, SND_SOC_REGMAP);
    if (ret < 0) {
        printk(KERN_ERR "wm8510: failed to set cache I/O: %d\n", ret);
        return ret;
    }

    wm8510_reset(codec);

    /* power on device */
    wm8510_set_bias_level(codec, SND_SOC_BIAS_STANDBY);

    return ret;
}

/* power down chip */
static int wm8510_remove(struct snd_soc_codec *codec)
{
    struct wm8510_priv *wm8510 = snd_soc_codec_get_drvdata(codec);

    wm8510_set_bias_level(codec, SND_SOC_BIAS_OFF);
    kfree(wm8510);
    return 0;
}

static struct snd_soc_codec_driver soc_codec_dev_wm8510 = {
    .probe =    wm8510_probe,
    .remove =   wm8510_remove,
    .suspend =  wm8510_suspend,
    .resume =   wm8510_resume,
    .set_bias_level = wm8510_set_bias_level,

    .controls = wm8510_snd_controls,
    .num_controls = ARRAY_SIZE(wm8510_snd_controls),
    .dapm_widgets = wm8510_dapm_widgets,
    .num_dapm_widgets = ARRAY_SIZE(wm8510_dapm_widgets),
    .dapm_routes = wm8510_dapm_routes,
    .num_dapm_routes = ARRAY_SIZE(wm8510_dapm_routes),
};

static const struct of_device_id wm8510_of_match[] = {
    { .compatible = "wlf,wm8510" },
    { },
};

static const struct regmap_config wm8510_regmap = {
    .reg_bits = 7,
    .val_bits = 9,
    .max_register = WM8510_MONOMIX,

    .reg_defaults = wm8510_reg_defaults,
    .num_reg_defaults = ARRAY_SIZE(wm8510_reg_defaults),
    .cache_type = REGCACHE_RBTREE,

    .volatile_reg = wm8510_volatile,
};

#if defined(CONFIG_SPI_MASTER)
static int __devinit wm8510_spi_probe(struct spi_device *spi)
{
    struct wm8510_priv *wm8510;
    int ret;

    wm8510 = devm_kzalloc(&spi->dev, sizeof(struct wm8510_priv),
                  GFP_KERNEL);
    if (wm8510 == NULL)
        return -ENOMEM;

    wm8510->regmap = devm_regmap_init_spi(spi, &wm8510_regmap);
    if (IS_ERR(wm8510->regmap))
        return PTR_ERR(wm8510->regmap);

    spi_set_drvdata(spi, wm8510);

    ret = snd_soc_register_codec(&spi->dev,
            &soc_codec_dev_wm8510, &wm8510_dai, 1);

    return ret;
}

static int __devexit wm8510_spi_remove(struct spi_device *spi)
{
    snd_soc_unregister_codec(&spi->dev);
    return 0;
}

static struct spi_driver wm8510_spi_driver = {
    .driver = {
        .name   = "wm8510",
        .owner  = THIS_MODULE,
        .of_match_table = wm8510_of_match,
    },
    .probe      = wm8510_spi_probe,
    .remove     = __devexit_p(wm8510_spi_remove),
};
#endif /* CONFIG_SPI_MASTER */

#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
static __devinit int wm8510_i2c_probe(struct i2c_client *i2c,
                      const struct i2c_device_id *id)
{
    struct wm8510_priv *wm8510;
    int ret;

    wm8510 = devm_kzalloc(&i2c->dev, sizeof(struct wm8510_priv),
                  GFP_KERNEL);
    if (wm8510 == NULL)
        return -ENOMEM;

    wm8510->regmap = devm_regmap_init_i2c(i2c, &wm8510_regmap);
    if (IS_ERR(wm8510->regmap))
        return PTR_ERR(wm8510->regmap);

    i2c_set_clientdata(i2c, wm8510);

    ret =  snd_soc_register_codec(&i2c->dev,
            &soc_codec_dev_wm8510, &wm8510_dai, 1);

    return ret;
}

static __devexit int wm8510_i2c_remove(struct i2c_client *client)
{
    snd_soc_unregister_codec(&client->dev);
    return 0;
}

static const struct i2c_device_id wm8510_i2c_id[] = {
    { "wm8510", 0 },
    { }
};
MODULE_DEVICE_TABLE(i2c, wm8510_i2c_id);

static struct i2c_driver wm8510_i2c_driver = {
    .driver = {
        .name = "wm8510",
        .owner = THIS_MODULE,
        .of_match_table = wm8510_of_match,
    },
    .probe =    wm8510_i2c_probe,
    .remove =   __devexit_p(wm8510_i2c_remove),
    .id_table = wm8510_i2c_id,
};
#endif

static int __init wm8510_modinit(void)
{
    int ret = 0;
#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
    ret = i2c_add_driver(&wm8510_i2c_driver);
    if (ret != 0) {
        printk(KERN_ERR "Failed to register WM8510 I2C driver: %d\n",
               ret);
    }
#endif
#if defined(CONFIG_SPI_MASTER)
    ret = spi_register_driver(&wm8510_spi_driver);
    if (ret != 0) {
        printk(KERN_ERR "Failed to register WM8510 SPI driver: %d\n",
               ret);
    }
#endif
    return ret;
}
module_init(wm8510_modinit);

static void __exit wm8510_exit(void)
{
#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
    i2c_del_driver(&wm8510_i2c_driver);
#endif
#if defined(CONFIG_SPI_MASTER)
    spi_unregister_driver(&wm8510_spi_driver);
#endif
}
module_exit(wm8510_exit);

MODULE_DESCRIPTION("ASoC WM8510 driver");
MODULE_AUTHOR("Liam Girdwood");
MODULE_LICENSE("GPL");