[deliverable/linux.git] / sound / soc / codecs / wm8731.c

/*
 * wm8731.c  --  WM8731 ALSA SoC Audio driver
 *
 * Copyright 2005 Openedhand Ltd.
 *
 * Author: Richard Purdie <richard@openedhand.com>
 *
 * Based on wm8753.c by Liam Girdwood
 *
 * 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/init.h>
#include <linux/delay.h>
#include <linux/pm.h>
#include <linux/i2c.h>
#include <linux/slab.h>
#include <linux/platform_device.h>
#include <linux/regulator/consumer.h>
#include <linux/spi/spi.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 "wm8731.h"

#define WM8731_NUM_SUPPLIES 4
static const char *wm8731_supply_names[WM8731_NUM_SUPPLIES] = {
	"AVDD",
	"HPVDD",
	"DCVDD",
	"DBVDD",
};

/* codec private data */
struct wm8731_priv {
	enum snd_soc_control_type control_type;
	struct regulator_bulk_data supplies[WM8731_NUM_SUPPLIES];
	u16 reg_cache[WM8731_CACHEREGNUM];
	unsigned int sysclk;
};


/*
 * wm8731 register cache
 * We can't read the WM8731 register space when we are
 * using 2 wire for device control, so we cache them instead.
 * There is no point in caching the reset register
 */
static const u16 wm8731_reg[WM8731_CACHEREGNUM] = {
	0x0097, 0x0097, 0x0079, 0x0079,
	0x000a, 0x0008, 0x009f, 0x000a,
	0x0000, 0x0000
};

#define wm8731_reset(c)	snd_soc_write(c, WM8731_RESET, 0)

static const char *wm8731_input_select[] = {"Line In", "Mic"};
static const char *wm8731_deemph[] = {"None", "32Khz", "44.1Khz", "48Khz"};

static const struct soc_enum wm8731_enum[] = {
	SOC_ENUM_SINGLE(WM8731_APANA, 2, 2, wm8731_input_select),
	SOC_ENUM_SINGLE(WM8731_APDIGI, 1, 4, wm8731_deemph),
};

static const DECLARE_TLV_DB_SCALE(in_tlv, -3450, 150, 0);
static const DECLARE_TLV_DB_SCALE(sidetone_tlv, -1500, 300, 0);
static const DECLARE_TLV_DB_SCALE(out_tlv, -12100, 100, 1);

static const struct snd_kcontrol_new wm8731_snd_controls[] = {

SOC_DOUBLE_R_TLV("Master Playback Volume", WM8731_LOUT1V, WM8731_ROUT1V,
		 0, 127, 0, out_tlv),
SOC_DOUBLE_R("Master Playback ZC Switch", WM8731_LOUT1V, WM8731_ROUT1V,
	7, 1, 0),

SOC_DOUBLE_R_TLV("Capture Volume", WM8731_LINVOL, WM8731_RINVOL, 0, 31, 0,
		 in_tlv),
SOC_DOUBLE_R("Line Capture Switch", WM8731_LINVOL, WM8731_RINVOL, 7, 1, 1),

SOC_SINGLE("Mic Boost (+20dB)", WM8731_APANA, 0, 1, 0),
SOC_SINGLE("Mic Capture Switch", WM8731_APANA, 1, 1, 1),

SOC_SINGLE_TLV("Sidetone Playback Volume", WM8731_APANA, 6, 3, 1,
	       sidetone_tlv),

SOC_SINGLE("ADC High Pass Filter Switch", WM8731_APDIGI, 0, 1, 1),
SOC_SINGLE("Store DC Offset Switch", WM8731_APDIGI, 4, 1, 0),

SOC_ENUM("Playback De-emphasis", wm8731_enum[1]),
};

/* Output Mixer */
static const struct snd_kcontrol_new wm8731_output_mixer_controls[] = {
SOC_DAPM_SINGLE("Line Bypass Switch", WM8731_APANA, 3, 1, 0),
SOC_DAPM_SINGLE("Mic Sidetone Switch", WM8731_APANA, 5, 1, 0),
SOC_DAPM_SINGLE("HiFi Playback Switch", WM8731_APANA, 4, 1, 0),
};

/* Input mux */
static const struct snd_kcontrol_new wm8731_input_mux_controls =
SOC_DAPM_ENUM("Input Select", wm8731_enum[0]);

static const struct snd_soc_dapm_widget wm8731_dapm_widgets[] = {
SND_SOC_DAPM_MIXER("Output Mixer", WM8731_PWR, 4, 1,
	&wm8731_output_mixer_controls[0],
	ARRAY_SIZE(wm8731_output_mixer_controls)),
SND_SOC_DAPM_DAC("DAC", "HiFi Playback", WM8731_PWR, 3, 1),
SND_SOC_DAPM_OUTPUT("LOUT"),
SND_SOC_DAPM_OUTPUT("LHPOUT"),
SND_SOC_DAPM_OUTPUT("ROUT"),
SND_SOC_DAPM_OUTPUT("RHPOUT"),
SND_SOC_DAPM_ADC("ADC", "HiFi Capture", WM8731_PWR, 2, 1),
SND_SOC_DAPM_MUX("Input Mux", SND_SOC_NOPM, 0, 0, &wm8731_input_mux_controls),
SND_SOC_DAPM_PGA("Line Input", WM8731_PWR, 0, 1, NULL, 0),
SND_SOC_DAPM_MICBIAS("Mic Bias", WM8731_PWR, 1, 1),
SND_SOC_DAPM_INPUT("MICIN"),
SND_SOC_DAPM_INPUT("RLINEIN"),
SND_SOC_DAPM_INPUT("LLINEIN"),
};

static const struct snd_soc_dapm_route intercon[] = {
	/* output mixer */
	{"Output Mixer", "Line Bypass Switch", "Line Input"},
	{"Output Mixer", "HiFi Playback Switch", "DAC"},
	{"Output Mixer", "Mic Sidetone Switch", "Mic Bias"},

	/* outputs */
	{"RHPOUT", NULL, "Output Mixer"},
	{"ROUT", NULL, "Output Mixer"},
	{"LHPOUT", NULL, "Output Mixer"},
	{"LOUT", NULL, "Output Mixer"},

	/* input mux */
	{"Input Mux", "Line In", "Line Input"},
	{"Input Mux", "Mic", "Mic Bias"},
	{"ADC", NULL, "Input Mux"},

	/* inputs */
	{"Line Input", NULL, "LLINEIN"},
	{"Line Input", NULL, "RLINEIN"},
	{"Mic Bias", NULL, "MICIN"},
};

static int wm8731_add_widgets(struct snd_soc_codec *codec)
{
	snd_soc_dapm_new_controls(codec, wm8731_dapm_widgets,
				  ARRAY_SIZE(wm8731_dapm_widgets));

	snd_soc_dapm_add_routes(codec, intercon, ARRAY_SIZE(intercon));

	return 0;
}

struct _coeff_div {
	u32 mclk;
	u32 rate;
	u16 fs;
	u8 sr:4;
	u8 bosr:1;
	u8 usb:1;
};

/* codec mclk clock divider coefficients */
static const struct _coeff_div coeff_div[] = {
	/* 48k */
	{12288000, 48000, 256, 0x0, 0x0, 0x0},
	{18432000, 48000, 384, 0x0, 0x1, 0x0},
	{12000000, 48000, 250, 0x0, 0x0, 0x1},

	/* 32k */
	{12288000, 32000, 384, 0x6, 0x0, 0x0},
	{18432000, 32000, 576, 0x6, 0x1, 0x0},
	{12000000, 32000, 375, 0x6, 0x0, 0x1},

	/* 8k */
	{12288000, 8000, 1536, 0x3, 0x0, 0x0},
	{18432000, 8000, 2304, 0x3, 0x1, 0x0},
	{11289600, 8000, 1408, 0xb, 0x0, 0x0},
	{16934400, 8000, 2112, 0xb, 0x1, 0x0},
	{12000000, 8000, 1500, 0x3, 0x0, 0x1},

	/* 96k */
	{12288000, 96000, 128, 0x7, 0x0, 0x0},
	{18432000, 96000, 192, 0x7, 0x1, 0x0},
	{12000000, 96000, 125, 0x7, 0x0, 0x1},

	/* 44.1k */
	{11289600, 44100, 256, 0x8, 0x0, 0x0},
	{16934400, 44100, 384, 0x8, 0x1, 0x0},
	{12000000, 44100, 272, 0x8, 0x1, 0x1},

	/* 88.2k */
	{11289600, 88200, 128, 0xf, 0x0, 0x0},
	{16934400, 88200, 192, 0xf, 0x1, 0x0},
	{12000000, 88200, 136, 0xf, 0x1, 0x1},
};

static inline int get_coeff(int mclk, int rate)
{
	int i;

	for (i = 0; i < ARRAY_SIZE(coeff_div); i++) {
		if (coeff_div[i].rate == rate && coeff_div[i].mclk == mclk)
			return i;
	}
	return 0;
}

static int wm8731_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;
	struct wm8731_priv *wm8731 = snd_soc_codec_get_drvdata(codec);
	u16 iface = snd_soc_read(codec, WM8731_IFACE) & 0xfff3;
	int i = get_coeff(wm8731->sysclk, params_rate(params));
	u16 srate = (coeff_div[i].sr << 2) |
		(coeff_div[i].bosr << 1) | coeff_div[i].usb;

	snd_soc_write(codec, WM8731_SRATE, srate);

	/* bit size */
	switch (params_format(params)) {
	case SNDRV_PCM_FORMAT_S16_LE:
		break;
	case SNDRV_PCM_FORMAT_S20_3LE:
		iface |= 0x0004;
		break;
	case SNDRV_PCM_FORMAT_S24_LE:
		iface |= 0x0008;
		break;
	}

	snd_soc_write(codec, WM8731_IFACE, iface);
	return 0;
}

static int wm8731_pcm_prepare(struct snd_pcm_substream *substream,
			      struct snd_soc_dai *dai)
{
	struct snd_soc_codec *codec = dai->codec;

	/* set active */
	snd_soc_write(codec, WM8731_ACTIVE, 0x0001);

	return 0;
}

static void wm8731_shutdown(struct snd_pcm_substream *substream,
			    struct snd_soc_dai *dai)
{
	struct snd_soc_codec *codec = dai->codec;

	/* deactivate */
	if (!codec->active) {
		udelay(50);
		snd_soc_write(codec, WM8731_ACTIVE, 0x0);
	}
}

static int wm8731_mute(struct snd_soc_dai *dai, int mute)
{
	struct snd_soc_codec *codec = dai->codec;
	u16 mute_reg = snd_soc_read(codec, WM8731_APDIGI) & 0xfff7;

	if (mute)
		snd_soc_write(codec, WM8731_APDIGI, mute_reg | 0x8);
	else
		snd_soc_write(codec, WM8731_APDIGI, mute_reg);
	return 0;
}

static int wm8731_set_dai_sysclk(struct snd_soc_dai *codec_dai,
		int clk_id, unsigned int freq, int dir)
{
	struct snd_soc_codec *codec = codec_dai->codec;
	struct wm8731_priv *wm8731 = snd_soc_codec_get_drvdata(codec);

	switch (freq) {
	case 11289600:
	case 12000000:
	case 12288000:
	case 16934400:
	case 18432000:
		wm8731->sysclk = freq;
		return 0;
	}
	return -EINVAL;
}


static int wm8731_set_dai_fmt(struct snd_soc_dai *codec_dai,
		unsigned int fmt)
{
	struct snd_soc_codec *codec = codec_dai->codec;
	u16 iface = 0;

	/* set master/slave audio interface */
	switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
	case SND_SOC_DAIFMT_CBM_CFM:
		iface |= 0x0040;
		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 |= 0x0002;
		break;
	case SND_SOC_DAIFMT_RIGHT_J:
		break;
	case SND_SOC_DAIFMT_LEFT_J:
		iface |= 0x0001;
		break;
	case SND_SOC_DAIFMT_DSP_A:
		iface |= 0x0003;
		break;
	case SND_SOC_DAIFMT_DSP_B:
		iface |= 0x0013;
		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 |= 0x0090;
		break;
	case SND_SOC_DAIFMT_IB_NF:
		iface |= 0x0080;
		break;
	case SND_SOC_DAIFMT_NB_IF:
		iface |= 0x0010;
		break;
	default:
		return -EINVAL;
	}

	/* set iface */
	snd_soc_write(codec, WM8731_IFACE, iface);
	return 0;
}

static int wm8731_set_bias_level(struct snd_soc_codec *codec,
				 enum snd_soc_bias_level level)
{
	struct wm8731_priv *wm8731 = snd_soc_codec_get_drvdata(codec);
	int i, ret;
	u8 data[2];
	u16 *cache = codec->reg_cache;
	u16 reg;

	switch (level) {
	case SND_SOC_BIAS_ON:
		break;
	case SND_SOC_BIAS_PREPARE:
		break;
	case SND_SOC_BIAS_STANDBY:
		if (codec->bias_level == SND_SOC_BIAS_OFF) {
			ret = regulator_bulk_enable(ARRAY_SIZE(wm8731->supplies),
						    wm8731->supplies);
			if (ret != 0)
				return ret;

			/* Sync reg_cache with the hardware */
			for (i = 0; i < ARRAY_SIZE(wm8731_reg); i++) {
				if (cache[i] == wm8731_reg[i])
					continue;

				data[0] = (i << 1) | ((cache[i] >> 8)
						      & 0x0001);
				data[1] = cache[i] & 0x00ff;
				codec->hw_write(codec->control_data, data, 2);
			}
		}

		/* Clear PWROFF, gate CLKOUT, everything else as-is */
		reg = snd_soc_read(codec, WM8731_PWR) & 0xff7f;
		snd_soc_write(codec, WM8731_PWR, reg | 0x0040);
		break;
	case SND_SOC_BIAS_OFF:
		snd_soc_write(codec, WM8731_ACTIVE, 0x0);
		snd_soc_write(codec, WM8731_PWR, 0xffff);
		regulator_bulk_disable(ARRAY_SIZE(wm8731->supplies),
				       wm8731->supplies);
		break;
	}
	codec->bias_level = level;
	return 0;
}

#define WM8731_RATES SNDRV_PCM_RATE_8000_96000

#define WM8731_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\
	SNDRV_PCM_FMTBIT_S24_LE)

static struct snd_soc_dai_ops wm8731_dai_ops = {
	.prepare	= wm8731_pcm_prepare,
	.hw_params	= wm8731_hw_params,
	.shutdown	= wm8731_shutdown,
	.digital_mute	= wm8731_mute,
	.set_sysclk	= wm8731_set_dai_sysclk,
	.set_fmt	= wm8731_set_dai_fmt,
};

static struct snd_soc_dai_driver wm8731_dai = {
	.name = "wm8731-hifi",
	.playback = {
		.stream_name = "Playback",
		.channels_min = 1,
		.channels_max = 2,
		.rates = WM8731_RATES,
		.formats = WM8731_FORMATS,},
	.capture = {
		.stream_name = "Capture",
		.channels_min = 1,
		.channels_max = 2,
		.rates = WM8731_RATES,
		.formats = WM8731_FORMATS,},
	.ops = &wm8731_dai_ops,
	.symmetric_rates = 1,
};

#ifdef CONFIG_PM
static int wm8731_suspend(struct snd_soc_codec *codec, pm_message_t state)
{
	wm8731_set_bias_level(codec, SND_SOC_BIAS_OFF);

	return 0;
}

static int wm8731_resume(struct snd_soc_codec *codec)
{
	wm8731_set_bias_level(codec, SND_SOC_BIAS_STANDBY);

	return 0;
}
#else
#define wm8731_suspend NULL
#define wm8731_resume NULL
#endif

static int wm8731_probe(struct snd_soc_codec *codec)
{
	struct wm8731_priv *wm8731 = snd_soc_codec_get_drvdata(codec);
	int ret = 0, i;

	codec->bias_level = SND_SOC_BIAS_OFF,

	ret = snd_soc_codec_set_cache_io(codec, 7, 9, wm8731->control_type);
	if (ret < 0) {
		dev_err(codec->dev, "Failed to set cache I/O: %d\n", ret);
		return ret;
	}

	for (i = 0; i < ARRAY_SIZE(wm8731->supplies); i++)
		wm8731->supplies[i].supply = wm8731_supply_names[i];

	ret = regulator_bulk_get(codec->dev, ARRAY_SIZE(wm8731->supplies),
				 wm8731->supplies);
	if (ret != 0) {
		dev_err(codec->dev, "Failed to request supplies: %d\n", ret);
		return ret;
	}

	ret = regulator_bulk_enable(ARRAY_SIZE(wm8731->supplies),
				    wm8731->supplies);
	if (ret != 0) {
		dev_err(codec->dev, "Failed to enable supplies: %d\n", ret);
		goto err_regulator_get;
	}

	ret = wm8731_reset(codec);
	if (ret < 0) {
		dev_err(codec->dev, "Failed to issue reset: %d\n", ret);
		goto err_regulator_enable;
	}

	wm8731_set_bias_level(codec, SND_SOC_BIAS_STANDBY);

	/* Latch the update bits */
	snd_soc_update_bits(codec, WM8731_LOUT1V, 0x100, 0);
	snd_soc_update_bits(codec, WM8731_ROUT1V, 0x100, 0);
	snd_soc_update_bits(codec, WM8731_LINVOL, 0x100, 0);
	snd_soc_update_bits(codec, WM8731_RINVOL, 0x100, 0);

	/* Disable bypass path by default */
	snd_soc_update_bits(codec, WM8731_APANA, 0x4, 0);

	snd_soc_add_controls(codec, wm8731_snd_controls,
			     ARRAY_SIZE(wm8731_snd_controls));
	wm8731_add_widgets(codec);

	/* Regulators will have been enabled by bias management */
	regulator_bulk_disable(ARRAY_SIZE(wm8731->supplies), wm8731->supplies);

	return 0;

err_regulator_enable:
	regulator_bulk_disable(ARRAY_SIZE(wm8731->supplies), wm8731->supplies);
err_regulator_get:
	regulator_bulk_free(ARRAY_SIZE(wm8731->supplies), wm8731->supplies);

	kfree(wm8731);
	return ret;
}

/* power down chip */
static int wm8731_remove(struct snd_soc_codec *codec)
{
	struct wm8731_priv *wm8731 = snd_soc_codec_get_drvdata(codec);

	wm8731_set_bias_level(codec, SND_SOC_BIAS_OFF);

	regulator_bulk_disable(ARRAY_SIZE(wm8731->supplies), wm8731->supplies);
	regulator_bulk_free(ARRAY_SIZE(wm8731->supplies), wm8731->supplies);

	return 0;
}

static struct snd_soc_codec_driver soc_codec_dev_wm8731 = {
	.probe =	wm8731_probe,
	.remove =	wm8731_remove,
	.suspend =	wm8731_suspend,
	.resume =	wm8731_resume,
	.set_bias_level = wm8731_set_bias_level,
	.reg_cache_size = sizeof(wm8731_reg),
	.reg_word_size = sizeof(u16),
	.reg_cache_default = wm8731_reg,
};

#if defined(CONFIG_SPI_MASTER)
static int __devinit wm8731_spi_probe(struct spi_device *spi)
{
	struct wm8731_priv *wm8731;
	int ret;

	wm8731 = kzalloc(sizeof(struct wm8731_priv), GFP_KERNEL);
	if (wm8731 == NULL)
		return -ENOMEM;

	wm8731->control_type = SND_SOC_SPI;
	spi_set_drvdata(spi, wm8731);

	ret = snd_soc_register_codec(&spi->dev,
			&soc_codec_dev_wm8731, &wm8731_dai, 1);
	if (ret < 0)
		kfree(wm8731);
	return ret;
}

static int __devexit wm8731_spi_remove(struct spi_device *spi)
{
	snd_soc_unregister_codec(&spi->dev);
	kfree(spi_get_drvdata(spi));
	return 0;
}

static struct spi_driver wm8731_spi_driver = {
	.driver = {
		.name	= "wm8731-codec",
		.bus	= &spi_bus_type,
		.owner	= THIS_MODULE,
	},
	.probe		= wm8731_spi_probe,
	.remove		= __devexit_p(wm8731_spi_remove),
};
#endif /* CONFIG_SPI_MASTER */

#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
static __devinit int wm8731_i2c_probe(struct i2c_client *i2c,
				      const struct i2c_device_id *id)
{
	struct wm8731_priv *wm8731;
	int ret;

	wm8731 = kzalloc(sizeof(struct wm8731_priv), GFP_KERNEL);
	if (wm8731 == NULL)
		return -ENOMEM;

	i2c_set_clientdata(i2c, wm8731);
	wm8731->control_type = SND_SOC_I2C;

	ret =  snd_soc_register_codec(&i2c->dev,
			&soc_codec_dev_wm8731, &wm8731_dai, 1);
	if (ret < 0)
		kfree(wm8731);
	return ret;
}

static __devexit int wm8731_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 wm8731_i2c_id[] = {
	{ "wm8731", 0 },
	{ }
};
MODULE_DEVICE_TABLE(i2c, wm8731_i2c_id);

static struct i2c_driver wm8731_i2c_driver = {
	.driver = {
		.name = "wm8731-codec",
		.owner = THIS_MODULE,
	},
	.probe =    wm8731_i2c_probe,
	.remove =   __devexit_p(wm8731_i2c_remove),
	.id_table = wm8731_i2c_id,
};
#endif

static int __init wm8731_modinit(void)
{
	int ret = 0;
#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
	ret = i2c_add_driver(&wm8731_i2c_driver);
	if (ret != 0) {
		printk(KERN_ERR "Failed to register WM8731 I2C driver: %d\n",
		       ret);
	}
#endif
#if defined(CONFIG_SPI_MASTER)
	ret = spi_register_driver(&wm8731_spi_driver);
	if (ret != 0) {
		printk(KERN_ERR "Failed to register WM8731 SPI driver: %d\n",
		       ret);
	}
#endif
	return ret;
}
module_init(wm8731_modinit);

static void __exit wm8731_exit(void)
{
#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
	i2c_del_driver(&wm8731_i2c_driver);
#endif
#if defined(CONFIG_SPI_MASTER)
	spi_unregister_driver(&wm8731_spi_driver);
#endif
}
module_exit(wm8731_exit);

MODULE_DESCRIPTION("ASoC WM8731 driver");
MODULE_AUTHOR("Richard Purdie");
MODULE_LICENSE("GPL");
Commit	Line	Data
40e0aa64 RP	1	/*
	2	* wm8731.c -- WM8731 ALSA SoC Audio driver
	3	*
	4	* Copyright 2005 Openedhand Ltd.
	5	*
	6	* Author: Richard Purdie <richard@openedhand.com>
	7	*
	8	* Based on wm8753.c by Liam Girdwood
	9	*
	10	* This program is free software; you can redistribute it and/or modify
	11	* it under the terms of the GNU General Public License version 2 as
	12	* published by the Free Software Foundation.
	13	*/
	14
	15	#include <linux/module.h>
	16	#include <linux/moduleparam.h>
	17	#include <linux/init.h>
	18	#include <linux/delay.h>
	19	#include <linux/pm.h>
	20	#include <linux/i2c.h>
5a0e3ad6	21	#include <linux/slab.h>
40e0aa64	22	#include <linux/platform_device.h>
7dea7c01	23	#include <linux/regulator/consumer.h>
d2a40355	24	#include <linux/spi/spi.h>
40e0aa64 RP	25	#include <sound/core.h>
	26	#include <sound/pcm.h>
	27	#include <sound/pcm_params.h>
	28	#include <sound/soc.h>
	29	#include <sound/soc-dapm.h>
	30	#include <sound/initval.h>
d00efa64	31	#include <sound/tlv.h>
40e0aa64 RP	32
	33	#include "wm8731.h"
	34
7dea7c01 MB	35	#define WM8731_NUM_SUPPLIES 4
	36	static const char *wm8731_supply_names[WM8731_NUM_SUPPLIES] = {
	37	"AVDD",
	38	"HPVDD",
	39	"DCVDD",
	40	"DBVDD",
	41	};
	42
b36d61d4 FM	43	/* codec private data */
b36d61d4 FM	44	struct wm8731_priv {
f0fba2ad	45	enum snd_soc_control_type control_type;
7dea7c01	46	struct regulator_bulk_data supplies[WM8731_NUM_SUPPLIES];
5998102b	47	u16 reg_cache[WM8731_CACHEREGNUM];
b36d61d4 FM	48	unsigned int sysclk;
	49	};
	50
a8035c8f	51
40e0aa64 RP	52	/*
	53	* wm8731 register cache
	54	* We can't read the WM8731 register space when we are
	55	* using 2 wire for device control, so we cache them instead.
	56	* There is no point in caching the reset register
	57	*/
	58	static const u16 wm8731_reg[WM8731_CACHEREGNUM] = {
17a52fd6 MB	59	0x0097, 0x0097, 0x0079, 0x0079,
	60	0x000a, 0x0008, 0x009f, 0x000a,
	61	0x0000, 0x0000
40e0aa64 RP	62	};
40e0aa64 RP	63
17a52fd6	64	#define wm8731_reset(c) snd_soc_write(c, WM8731_RESET, 0)
40e0aa64 RP	65
	66	static const char *wm8731_input_select[] = {"Line In", "Mic"};
	67	static const char *wm8731_deemph[] = {"None", "32Khz", "44.1Khz", "48Khz"};
	68
	69	static const struct soc_enum wm8731_enum[] = {
	70	SOC_ENUM_SINGLE(WM8731_APANA, 2, 2, wm8731_input_select),
	71	SOC_ENUM_SINGLE(WM8731_APDIGI, 1, 4, wm8731_deemph),
	72	};
	73
d00efa64 MB	74	static const DECLARE_TLV_DB_SCALE(in_tlv, -3450, 150, 0);
	75	static const DECLARE_TLV_DB_SCALE(sidetone_tlv, -1500, 300, 0);
	76	static const DECLARE_TLV_DB_SCALE(out_tlv, -12100, 100, 1);
	77
40e0aa64 RP	78	static const struct snd_kcontrol_new wm8731_snd_controls[] = {
40e0aa64 RP	79
d00efa64 MB	80	SOC_DOUBLE_R_TLV("Master Playback Volume", WM8731_LOUT1V, WM8731_ROUT1V,
d00efa64 MB	81	0, 127, 0, out_tlv),
bd903b6e LG	82	SOC_DOUBLE_R("Master Playback ZC Switch", WM8731_LOUT1V, WM8731_ROUT1V,
bd903b6e LG	83	7, 1, 0),
40e0aa64	84
d00efa64 MB	85	SOC_DOUBLE_R_TLV("Capture Volume", WM8731_LINVOL, WM8731_RINVOL, 0, 31, 0,
d00efa64 MB	86	in_tlv),
40e0aa64 RP	87	SOC_DOUBLE_R("Line Capture Switch", WM8731_LINVOL, WM8731_RINVOL, 7, 1, 1),
	88
	89	SOC_SINGLE("Mic Boost (+20dB)", WM8731_APANA, 0, 1, 0),
ef38ed88	90	SOC_SINGLE("Mic Capture Switch", WM8731_APANA, 1, 1, 1),
40e0aa64	91
d00efa64 MB	92	SOC_SINGLE_TLV("Sidetone Playback Volume", WM8731_APANA, 6, 3, 1,
d00efa64 MB	93	sidetone_tlv),
40e0aa64 RP	94
	95	SOC_SINGLE("ADC High Pass Filter Switch", WM8731_APDIGI, 0, 1, 1),
	96	SOC_SINGLE("Store DC Offset Switch", WM8731_APDIGI, 4, 1, 0),
	97
	98	SOC_ENUM("Playback De-emphasis", wm8731_enum[1]),
	99	};
	100
40e0aa64 RP	101	/* Output Mixer */
	102	static const struct snd_kcontrol_new wm8731_output_mixer_controls[] = {
	103	SOC_DAPM_SINGLE("Line Bypass Switch", WM8731_APANA, 3, 1, 0),
	104	SOC_DAPM_SINGLE("Mic Sidetone Switch", WM8731_APANA, 5, 1, 0),
	105	SOC_DAPM_SINGLE("HiFi Playback Switch", WM8731_APANA, 4, 1, 0),
	106	};
	107
	108	/* Input mux */
	109	static const struct snd_kcontrol_new wm8731_input_mux_controls =
	110	SOC_DAPM_ENUM("Input Select", wm8731_enum[0]);
	111
	112	static const struct snd_soc_dapm_widget wm8731_dapm_widgets[] = {
	113	SND_SOC_DAPM_MIXER("Output Mixer", WM8731_PWR, 4, 1,
	114	&wm8731_output_mixer_controls[0],
	115	ARRAY_SIZE(wm8731_output_mixer_controls)),
	116	SND_SOC_DAPM_DAC("DAC", "HiFi Playback", WM8731_PWR, 3, 1),
	117	SND_SOC_DAPM_OUTPUT("LOUT"),
	118	SND_SOC_DAPM_OUTPUT("LHPOUT"),
	119	SND_SOC_DAPM_OUTPUT("ROUT"),
	120	SND_SOC_DAPM_OUTPUT("RHPOUT"),
	121	SND_SOC_DAPM_ADC("ADC", "HiFi Capture", WM8731_PWR, 2, 1),
	122	SND_SOC_DAPM_MUX("Input Mux", SND_SOC_NOPM, 0, 0, &wm8731_input_mux_controls),
	123	SND_SOC_DAPM_PGA("Line Input", WM8731_PWR, 0, 1, NULL, 0),
	124	SND_SOC_DAPM_MICBIAS("Mic Bias", WM8731_PWR, 1, 1),
	125	SND_SOC_DAPM_INPUT("MICIN"),
	126	SND_SOC_DAPM_INPUT("RLINEIN"),
	127	SND_SOC_DAPM_INPUT("LLINEIN"),
	128	};
	129
a65f0568	130	static const struct snd_soc_dapm_route intercon[] = {
40e0aa64 RP	131	/* output mixer */
	132	{"Output Mixer", "Line Bypass Switch", "Line Input"},
	133	{"Output Mixer", "HiFi Playback Switch", "DAC"},
	134	{"Output Mixer", "Mic Sidetone Switch", "Mic Bias"},
	135
	136	/* outputs */
	137	{"RHPOUT", NULL, "Output Mixer"},
	138	{"ROUT", NULL, "Output Mixer"},
	139	{"LHPOUT", NULL, "Output Mixer"},
	140	{"LOUT", NULL, "Output Mixer"},
	141
	142	/* input mux */
	143	{"Input Mux", "Line In", "Line Input"},
	144	{"Input Mux", "Mic", "Mic Bias"},
	145	{"ADC", NULL, "Input Mux"},
	146
	147	/* inputs */
	148	{"Line Input", NULL, "LLINEIN"},
	149	{"Line Input", NULL, "RLINEIN"},
	150	{"Mic Bias", NULL, "MICIN"},
40e0aa64 RP	151	};
	152
	153	static int wm8731_add_widgets(struct snd_soc_codec *codec)
	154	{
a65f0568 MB	155	snd_soc_dapm_new_controls(codec, wm8731_dapm_widgets,
a65f0568 MB	156	ARRAY_SIZE(wm8731_dapm_widgets));
40e0aa64	157
a65f0568	158	snd_soc_dapm_add_routes(codec, intercon, ARRAY_SIZE(intercon));
40e0aa64	159
40e0aa64 RP	160	return 0;
	161	}
	162
	163	struct _coeff_div {
	164	u32 mclk;
	165	u32 rate;
	166	u16 fs;
	167	u8 sr:4;
	168	u8 bosr:1;
	169	u8 usb:1;
	170	};
	171
	172	/* codec mclk clock divider coefficients */
	173	static const struct _coeff_div coeff_div[] = {
	174	/* 48k */
	175	{12288000, 48000, 256, 0x0, 0x0, 0x0},
	176	{18432000, 48000, 384, 0x0, 0x1, 0x0},
	177	{12000000, 48000, 250, 0x0, 0x0, 0x1},
	178
	179	/* 32k */
	180	{12288000, 32000, 384, 0x6, 0x0, 0x0},
	181	{18432000, 32000, 576, 0x6, 0x1, 0x0},
298a2c75	182	{12000000, 32000, 375, 0x6, 0x0, 0x1},
40e0aa64 RP	183
	184	/* 8k */
	185	{12288000, 8000, 1536, 0x3, 0x0, 0x0},
	186	{18432000, 8000, 2304, 0x3, 0x1, 0x0},
	187	{11289600, 8000, 1408, 0xb, 0x0, 0x0},
	188	{16934400, 8000, 2112, 0xb, 0x1, 0x0},
	189	{12000000, 8000, 1500, 0x3, 0x0, 0x1},
	190
	191	/* 96k */
	192	{12288000, 96000, 128, 0x7, 0x0, 0x0},
	193	{18432000, 96000, 192, 0x7, 0x1, 0x0},
	194	{12000000, 96000, 125, 0x7, 0x0, 0x1},
	195
	196	/* 44.1k */
	197	{11289600, 44100, 256, 0x8, 0x0, 0x0},
	198	{16934400, 44100, 384, 0x8, 0x1, 0x0},
	199	{12000000, 44100, 272, 0x8, 0x1, 0x1},
	200
	201	/* 88.2k */
	202	{11289600, 88200, 128, 0xf, 0x0, 0x0},
	203	{16934400, 88200, 192, 0xf, 0x1, 0x0},
	204	{12000000, 88200, 136, 0xf, 0x1, 0x1},
	205	};
	206
	207	static inline int get_coeff(int mclk, int rate)
	208	{
	209	int i;
	210
	211	for (i = 0; i < ARRAY_SIZE(coeff_div); i++) {
	212	if (coeff_div[i].rate == rate && coeff_div[i].mclk == mclk)
	213	return i;
	214	}
	215	return 0;
	216	}
	217
b36d61d4	218	static int wm8731_hw_params(struct snd_pcm_substream *substream,
dee89c4d MB	219	struct snd_pcm_hw_params *params,
dee89c4d MB	220	struct snd_soc_dai *dai)
40e0aa64	221	{
f0fba2ad	222	struct snd_soc_codec *codec = dai->codec;
b2c812e2	223	struct wm8731_priv *wm8731 = snd_soc_codec_get_drvdata(codec);
17a52fd6	224	u16 iface = snd_soc_read(codec, WM8731_IFACE) & 0xfff3;
b36d61d4 FM	225	int i = get_coeff(wm8731->sysclk, params_rate(params));
	226	u16 srate = (coeff_div[i].sr << 2) \|
	227	(coeff_div[i].bosr << 1) \| coeff_div[i].usb;
40e0aa64	228
17a52fd6	229	snd_soc_write(codec, WM8731_SRATE, srate);
b36d61d4 FM	230
	231	/* bit size */
	232	switch (params_format(params)) {
	233	case SNDRV_PCM_FORMAT_S16_LE:
	234	break;
	235	case SNDRV_PCM_FORMAT_S20_3LE:
	236	iface \|= 0x0004;
	237	break;
	238	case SNDRV_PCM_FORMAT_S24_LE:
	239	iface \|= 0x0008;
	240	break;
	241	}
40e0aa64	242
17a52fd6	243	snd_soc_write(codec, WM8731_IFACE, iface);
b36d61d4	244	return 0;
40e0aa64 RP	245	}
40e0aa64 RP	246
dee89c4d MB	247	static int wm8731_pcm_prepare(struct snd_pcm_substream *substream,
dee89c4d MB	248	struct snd_soc_dai *dai)
40e0aa64	249	{
f0fba2ad	250	struct snd_soc_codec *codec = dai->codec;
b36d61d4 FM	251
b36d61d4 FM	252	/* set active */
17a52fd6	253	snd_soc_write(codec, WM8731_ACTIVE, 0x0001);
b36d61d4 FM	254
	255	return 0;
	256	}
	257
dee89c4d MB	258	static void wm8731_shutdown(struct snd_pcm_substream *substream,
dee89c4d MB	259	struct snd_soc_dai *dai)
b36d61d4	260	{
f0fba2ad	261	struct snd_soc_codec *codec = dai->codec;
b36d61d4 FM	262
	263	/* deactivate */
	264	if (!codec->active) {
	265	udelay(50);
17a52fd6	266	snd_soc_write(codec, WM8731_ACTIVE, 0x0);
b36d61d4 FM	267	}
	268	}
	269
e550e17f	270	static int wm8731_mute(struct snd_soc_dai *dai, int mute)
b36d61d4 FM	271	{
b36d61d4 FM	272	struct snd_soc_codec *codec = dai->codec;
17a52fd6	273	u16 mute_reg = snd_soc_read(codec, WM8731_APDIGI) & 0xfff7;
b36d61d4 FM	274
b36d61d4 FM	275	if (mute)
17a52fd6	276	snd_soc_write(codec, WM8731_APDIGI, mute_reg \| 0x8);
b36d61d4	277	else
17a52fd6	278	snd_soc_write(codec, WM8731_APDIGI, mute_reg);
b36d61d4 FM	279	return 0;
	280	}
	281
e550e17f	282	static int wm8731_set_dai_sysclk(struct snd_soc_dai *codec_dai,
b36d61d4 FM	283	int clk_id, unsigned int freq, int dir)
	284	{
	285	struct snd_soc_codec *codec = codec_dai->codec;
b2c812e2	286	struct wm8731_priv *wm8731 = snd_soc_codec_get_drvdata(codec);
b36d61d4 FM	287
	288	switch (freq) {
	289	case 11289600:
	290	case 12000000:
	291	case 12288000:
	292	case 16934400:
	293	case 18432000:
	294	wm8731->sysclk = freq;
	295	return 0;
	296	}
	297	return -EINVAL;
	298	}
	299
	300
e550e17f	301	static int wm8731_set_dai_fmt(struct snd_soc_dai *codec_dai,
b36d61d4 FM	302	unsigned int fmt)
	303	{
	304	struct snd_soc_codec *codec = codec_dai->codec;
	305	u16 iface = 0;
40e0aa64 RP	306
40e0aa64 RP	307	/* set master/slave audio interface */
b36d61d4	308	switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
40e0aa64 RP	309	case SND_SOC_DAIFMT_CBM_CFM:
	310	iface \|= 0x0040;
	311	break;
	312	case SND_SOC_DAIFMT_CBS_CFS:
	313	break;
b36d61d4 FM	314	default:
b36d61d4 FM	315	return -EINVAL;
40e0aa64	316	}
40e0aa64 RP	317
40e0aa64 RP	318	/* interface format */
b36d61d4	319	switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
40e0aa64 RP	320	case SND_SOC_DAIFMT_I2S:
	321	iface \|= 0x0002;
	322	break;
	323	case SND_SOC_DAIFMT_RIGHT_J:
	324	break;
	325	case SND_SOC_DAIFMT_LEFT_J:
	326	iface \|= 0x0001;
	327	break;
	328	case SND_SOC_DAIFMT_DSP_A:
	329	iface \|= 0x0003;
	330	break;
	331	case SND_SOC_DAIFMT_DSP_B:
	332	iface \|= 0x0013;
	333	break;
b36d61d4 FM	334	default:
b36d61d4 FM	335	return -EINVAL;
40e0aa64 RP	336	}
	337
	338	/* clock inversion */
b36d61d4	339	switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
40e0aa64 RP	340	case SND_SOC_DAIFMT_NB_NF:
	341	break;
	342	case SND_SOC_DAIFMT_IB_IF:
	343	iface \|= 0x0090;
	344	break;
	345	case SND_SOC_DAIFMT_IB_NF:
	346	iface \|= 0x0080;
	347	break;
	348	case SND_SOC_DAIFMT_NB_IF:
	349	iface \|= 0x0010;
	350	break;
b36d61d4 FM	351	default:
b36d61d4 FM	352	return -EINVAL;
40e0aa64 RP	353	}
	354
	355	/* set iface */
17a52fd6	356	snd_soc_write(codec, WM8731_IFACE, iface);
40e0aa64 RP	357	return 0;
	358	}
	359
0be9898a MB	360	static int wm8731_set_bias_level(struct snd_soc_codec *codec,
0be9898a MB	361	enum snd_soc_bias_level level)
40e0aa64	362	{
06ae9988 MB	363	struct wm8731_priv *wm8731 = snd_soc_codec_get_drvdata(codec);
	364	int i, ret;
	365	u8 data[2];
	366	u16 *cache = codec->reg_cache;
22d22ee5	367	u16 reg;
40e0aa64	368
0be9898a MB	369	switch (level) {
0be9898a MB	370	case SND_SOC_BIAS_ON:
40e0aa64	371	break;
0be9898a	372	case SND_SOC_BIAS_PREPARE:
40e0aa64	373	break;
0be9898a	374	case SND_SOC_BIAS_STANDBY:
06ae9988 MB	375	if (codec->bias_level == SND_SOC_BIAS_OFF) {
	376	ret = regulator_bulk_enable(ARRAY_SIZE(wm8731->supplies),
	377	wm8731->supplies);
	378	if (ret != 0)
	379	return ret;
	380
	381	/* Sync reg_cache with the hardware */
	382	for (i = 0; i < ARRAY_SIZE(wm8731_reg); i++) {
	383	if (cache[i] == wm8731_reg[i])
	384	continue;
	385
	386	data[0] = (i << 1) \| ((cache[i] >> 8)
	387	& 0x0001);
	388	data[1] = cache[i] & 0x00ff;
	389	codec->hw_write(codec->control_data, data, 2);
	390	}
	391	}
	392
22d22ee5	393	/* Clear PWROFF, gate CLKOUT, everything else as-is */
17a52fd6 MB	394	reg = snd_soc_read(codec, WM8731_PWR) & 0xff7f;
17a52fd6 MB	395	snd_soc_write(codec, WM8731_PWR, reg \| 0x0040);
40e0aa64	396	break;
0be9898a	397	case SND_SOC_BIAS_OFF:
17a52fd6 MB	398	snd_soc_write(codec, WM8731_ACTIVE, 0x0);
17a52fd6 MB	399	snd_soc_write(codec, WM8731_PWR, 0xffff);
06ae9988 MB	400	regulator_bulk_disable(ARRAY_SIZE(wm8731->supplies),
06ae9988 MB	401	wm8731->supplies);
40e0aa64 RP	402	break;
40e0aa64 RP	403	}
0be9898a	404	codec->bias_level = level;
40e0aa64 RP	405	return 0;
	406	}
	407
e135443e	408	#define WM8731_RATES SNDRV_PCM_RATE_8000_96000
b36d61d4 FM	409
	410	#define WM8731_FORMATS (SNDRV_PCM_FMTBIT_S16_LE \| SNDRV_PCM_FMTBIT_S20_3LE \|\
	411	SNDRV_PCM_FMTBIT_S24_LE)
	412
6335d055 EM	413	static struct snd_soc_dai_ops wm8731_dai_ops = {
	414	.prepare = wm8731_pcm_prepare,
	415	.hw_params = wm8731_hw_params,
	416	.shutdown = wm8731_shutdown,
	417	.digital_mute = wm8731_mute,
	418	.set_sysclk = wm8731_set_dai_sysclk,
	419	.set_fmt = wm8731_set_dai_fmt,
	420	};
	421
f0fba2ad LG	422	static struct snd_soc_dai_driver wm8731_dai = {
f0fba2ad LG	423	.name = "wm8731-hifi",
40e0aa64 RP	424	.playback = {
	425	.stream_name = "Playback",
	426	.channels_min = 1,
	427	.channels_max = 2,
b36d61d4 FM	428	.rates = WM8731_RATES,
b36d61d4 FM	429	.formats = WM8731_FORMATS,},
40e0aa64 RP	430	.capture = {
	431	.stream_name = "Capture",
	432	.channels_min = 1,
	433	.channels_max = 2,
b36d61d4 FM	434	.rates = WM8731_RATES,
b36d61d4 FM	435	.formats = WM8731_FORMATS,},
6335d055	436	.ops = &wm8731_dai_ops,
4934482d	437	.symmetric_rates = 1,
40e0aa64	438	};
40e0aa64	439
b3b50b3f	440	#ifdef CONFIG_PM
f0fba2ad	441	static int wm8731_suspend(struct snd_soc_codec *codec, pm_message_t state)
40e0aa64	442	{
0be9898a	443	wm8731_set_bias_level(codec, SND_SOC_BIAS_OFF);
06ae9988	444
40e0aa64 RP	445	return 0;
	446	}
	447
f0fba2ad	448	static int wm8731_resume(struct snd_soc_codec *codec)
40e0aa64	449	{
0be9898a	450	wm8731_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
7dea7c01	451
40e0aa64 RP	452	return 0;
40e0aa64 RP	453	}
b3b50b3f MB	454	#else
	455	#define wm8731_suspend NULL
	456	#define wm8731_resume NULL
	457	#endif
40e0aa64	458
f0fba2ad	459	static int wm8731_probe(struct snd_soc_codec *codec)
40e0aa64	460	{
f0fba2ad LG	461	struct wm8731_priv *wm8731 = snd_soc_codec_get_drvdata(codec);
f0fba2ad LG	462	int ret = 0, i;
5998102b	463
f0fba2ad	464	codec->bias_level = SND_SOC_BIAS_OFF,
5998102b	465
f0fba2ad	466	ret = snd_soc_codec_set_cache_io(codec, 7, 9, wm8731->control_type);
17a52fd6 MB	467	if (ret < 0) {
17a52fd6 MB	468	dev_err(codec->dev, "Failed to set cache I/O: %d\n", ret);
f0fba2ad	469	return ret;
17a52fd6 MB	470	}
17a52fd6 MB	471
7dea7c01 MB	472	for (i = 0; i < ARRAY_SIZE(wm8731->supplies); i++)
	473	wm8731->supplies[i].supply = wm8731_supply_names[i];
	474
	475	ret = regulator_bulk_get(codec->dev, ARRAY_SIZE(wm8731->supplies),
	476	wm8731->supplies);
	477	if (ret != 0) {
	478	dev_err(codec->dev, "Failed to request supplies: %d\n", ret);
f0fba2ad	479	return ret;
7dea7c01 MB	480	}
	481
	482	ret = regulator_bulk_enable(ARRAY_SIZE(wm8731->supplies),
	483	wm8731->supplies);
	484	if (ret != 0) {
	485	dev_err(codec->dev, "Failed to enable supplies: %d\n", ret);
	486	goto err_regulator_get;
	487	}
	488
519cf2df MB	489	ret = wm8731_reset(codec);
519cf2df MB	490	if (ret < 0) {
fe5422fc	491	dev_err(codec->dev, "Failed to issue reset: %d\n", ret);
7dea7c01	492	goto err_regulator_enable;
519cf2df MB	493	}
519cf2df MB	494
5998102b MB	495	wm8731_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
	496
	497	/* Latch the update bits */
17a52fd6 MB	498	snd_soc_update_bits(codec, WM8731_LOUT1V, 0x100, 0);
	499	snd_soc_update_bits(codec, WM8731_ROUT1V, 0x100, 0);
	500	snd_soc_update_bits(codec, WM8731_LINVOL, 0x100, 0);
	501	snd_soc_update_bits(codec, WM8731_RINVOL, 0x100, 0);
5998102b	502
ce3bdaa8	503	/* Disable bypass path by default */
17a52fd6	504	snd_soc_update_bits(codec, WM8731_APANA, 0x4, 0);
ce3bdaa8	505
f0fba2ad LG	506	snd_soc_add_controls(codec, wm8731_snd_controls,
	507	ARRAY_SIZE(wm8731_snd_controls));
	508	wm8731_add_widgets(codec);
a8035c8f	509
06ae9988 MB	510	/* Regulators will have been enabled by bias management */
	511	regulator_bulk_disable(ARRAY_SIZE(wm8731->supplies), wm8731->supplies);
	512
a8035c8f	513	return 0;
fe5422fc	514
7dea7c01 MB	515	err_regulator_enable:
	516	regulator_bulk_disable(ARRAY_SIZE(wm8731->supplies), wm8731->supplies);
	517	err_regulator_get:
	518	regulator_bulk_free(ARRAY_SIZE(wm8731->supplies), wm8731->supplies);
f0fba2ad	519
fe5422fc MB	520	kfree(wm8731);
fe5422fc MB	521	return ret;
a8035c8f MB	522	}
a8035c8f MB	523
f0fba2ad LG	524	/* power down chip */
f0fba2ad LG	525	static int wm8731_remove(struct snd_soc_codec *codec)
5998102b	526	{
f0fba2ad LG	527	struct wm8731_priv *wm8731 = snd_soc_codec_get_drvdata(codec);
	528
	529	wm8731_set_bias_level(codec, SND_SOC_BIAS_OFF);
	530
	531	regulator_bulk_disable(ARRAY_SIZE(wm8731->supplies), wm8731->supplies);
7dea7c01	532	regulator_bulk_free(ARRAY_SIZE(wm8731->supplies), wm8731->supplies);
f0fba2ad LG	533
f0fba2ad LG	534	return 0;
5998102b	535	}
a8035c8f	536
f0fba2ad LG	537	static struct snd_soc_codec_driver soc_codec_dev_wm8731 = {
	538	.probe = wm8731_probe,
	539	.remove = wm8731_remove,
	540	.suspend = wm8731_suspend,
	541	.resume = wm8731_resume,
	542	.set_bias_level = wm8731_set_bias_level,
	543	.reg_cache_size = sizeof(wm8731_reg),
	544	.reg_word_size = sizeof(u16),
	545	.reg_cache_default = wm8731_reg,
	546	};
	547
5998102b	548	#if defined(CONFIG_SPI_MASTER)
5998102b MB	549	static int __devinit wm8731_spi_probe(struct spi_device *spi)
5998102b MB	550	{
5998102b	551	struct wm8731_priv *wm8731;
f0fba2ad	552	int ret;
5998102b MB	553
	554	wm8731 = kzalloc(sizeof(struct wm8731_priv), GFP_KERNEL);
	555	if (wm8731 == NULL)
	556	return -ENOMEM;
	557
f0fba2ad LG	558	wm8731->control_type = SND_SOC_SPI;
f0fba2ad LG	559	spi_set_drvdata(spi, wm8731);
93b760b7	560
f0fba2ad LG	561	ret = snd_soc_register_codec(&spi->dev,
	562	&soc_codec_dev_wm8731, &wm8731_dai, 1);
	563	if (ret < 0)
	564	kfree(wm8731);
	565	return ret;
5998102b MB	566	}
	567
	568	static int __devexit wm8731_spi_remove(struct spi_device *spi)
	569	{
f0fba2ad LG	570	snd_soc_unregister_codec(&spi->dev);
f0fba2ad LG	571	kfree(spi_get_drvdata(spi));
5998102b MB	572	return 0;
	573	}
	574
	575	static struct spi_driver wm8731_spi_driver = {
	576	.driver = {
f0fba2ad	577	.name = "wm8731-codec",
5998102b MB	578	.bus = &spi_bus_type,
	579	.owner = THIS_MODULE,
	580	},
	581	.probe = wm8731_spi_probe,
	582	.remove = __devexit_p(wm8731_spi_remove),
	583	};
a8035c8f MB	584	#endif /* CONFIG_SPI_MASTER */
	585
	586	#if defined(CONFIG_I2C) \|\| defined(CONFIG_I2C_MODULE)
c6f29811 MB	587	static __devinit int wm8731_i2c_probe(struct i2c_client *i2c,
c6f29811 MB	588	const struct i2c_device_id *id)
a8035c8f	589	{
5998102b	590	struct wm8731_priv *wm8731;
f0fba2ad	591	int ret;
a8035c8f	592
5998102b MB	593	wm8731 = kzalloc(sizeof(struct wm8731_priv), GFP_KERNEL);
	594	if (wm8731 == NULL)
	595	return -ENOMEM;
	596
5998102b	597	i2c_set_clientdata(i2c, wm8731);
f0fba2ad	598	wm8731->control_type = SND_SOC_I2C;
a8035c8f	599
f0fba2ad LG	600	ret = snd_soc_register_codec(&i2c->dev,
	601	&soc_codec_dev_wm8731, &wm8731_dai, 1);
	602	if (ret < 0)
	603	kfree(wm8731);
	604	return ret;
a8035c8f MB	605	}
a8035c8f MB	606
c6f29811	607	static __devexit int wm8731_i2c_remove(struct i2c_client *client)
a8035c8f	608	{
f0fba2ad LG	609	snd_soc_unregister_codec(&client->dev);
f0fba2ad LG	610	kfree(i2c_get_clientdata(client));
a8035c8f MB	611	return 0;
	612	}
	613
	614	static const struct i2c_device_id wm8731_i2c_id[] = {
	615	{ "wm8731", 0 },
	616	{ }
	617	};
	618	MODULE_DEVICE_TABLE(i2c, wm8731_i2c_id);
	619
	620	static struct i2c_driver wm8731_i2c_driver = {
	621	.driver = {
f0fba2ad	622	.name = "wm8731-codec",
a8035c8f MB	623	.owner = THIS_MODULE,
	624	},
	625	.probe = wm8731_i2c_probe,
c6f29811	626	.remove = __devexit_p(wm8731_i2c_remove),
a8035c8f MB	627	.id_table = wm8731_i2c_id,
	628	};
	629	#endif
	630
c9b3a40f	631	static int __init wm8731_modinit(void)
64089b84	632	{
f0fba2ad	633	int ret = 0;
5998102b MB	634	#if defined(CONFIG_I2C) \|\| defined(CONFIG_I2C_MODULE)
	635	ret = i2c_add_driver(&wm8731_i2c_driver);
	636	if (ret != 0) {
	637	printk(KERN_ERR "Failed to register WM8731 I2C driver: %d\n",
	638	ret);
	639	}
	640	#endif
	641	#if defined(CONFIG_SPI_MASTER)
	642	ret = spi_register_driver(&wm8731_spi_driver);
	643	if (ret != 0) {
	644	printk(KERN_ERR "Failed to register WM8731 SPI driver: %d\n",
	645	ret);
	646	}
	647	#endif
f0fba2ad	648	return ret;
64089b84 MB	649	}
	650	module_init(wm8731_modinit);
	651
	652	static void __exit wm8731_exit(void)
	653	{
5998102b MB	654	#if defined(CONFIG_I2C) \|\| defined(CONFIG_I2C_MODULE)
	655	i2c_del_driver(&wm8731_i2c_driver);
	656	#endif
	657	#if defined(CONFIG_SPI_MASTER)
	658	spi_unregister_driver(&wm8731_spi_driver);
	659	#endif
64089b84 MB	660	}
	661	module_exit(wm8731_exit);
	662
40e0aa64 RP	663	MODULE_DESCRIPTION("ASoC WM8731 driver");
	664	MODULE_AUTHOR("Richard Purdie");
	665	MODULE_LICENSE("GPL");