sound/soc/codecs/ad193x.c - kernel/msm-4.9 - Gitiles

 /*
  * AD193X Audio Codec driver supporting AD1936/7/8/9
  *
  * Copyright 2010 Analog Devices Inc.
  *
  * Licensed under the GPL-2 or later.
  */

 #include <linux/init.h>
 #include <linux/module.h>
 #include <linux/kernel.h>
 #include <linux/device.h>
 #include <linux/i2c.h>
 #include <linux/spi/spi.h>
 #include <linux/slab.h>
 #include <sound/core.h>
 #include <sound/pcm.h>
 #include <sound/pcm_params.h>
 #include <sound/initval.h>
 #include <sound/soc.h>
 #include <sound/tlv.h>
 #include "ad193x.h"

 /* codec private data */
 struct ad193x_priv {
 	u8 reg_cache[AD193X_NUM_REGS];
 	enum snd_soc_control_type bus_type;
 	void *control_data;
 	int sysclk;
 };

 /* ad193x register cache & default register settings */
 static const u8 ad193x_reg[AD193X_NUM_REGS] = {
 	0, 0, 0, 0, 0, 0, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0, 0, 0,
 };

 /*
  * AD193X volume/mute/de-emphasis etc. controls
  */
 static const char *ad193x_deemp[] = {"None", "48kHz", "44.1kHz", "32kHz"};

 static const struct soc_enum ad193x_deemp_enum =
 	SOC_ENUM_SINGLE(AD193X_DAC_CTRL2, 1, 4, ad193x_deemp);

 static const struct snd_kcontrol_new ad193x_snd_controls[] = {
 	/* DAC volume control */
 	SOC_DOUBLE_R("DAC1 Volume", AD193X_DAC_L1_VOL,
 			AD193X_DAC_R1_VOL, 0, 0xFF, 1),
 	SOC_DOUBLE_R("DAC2 Volume", AD193X_DAC_L2_VOL,
 			AD193X_DAC_R2_VOL, 0, 0xFF, 1),
 	SOC_DOUBLE_R("DAC3 Volume", AD193X_DAC_L3_VOL,
 			AD193X_DAC_R3_VOL, 0, 0xFF, 1),
 	SOC_DOUBLE_R("DAC4 Volume", AD193X_DAC_L4_VOL,
 			AD193X_DAC_R4_VOL, 0, 0xFF, 1),

 	/* ADC switch control */
 	SOC_DOUBLE("ADC1 Switch", AD193X_ADC_CTRL0, AD193X_ADCL1_MUTE,
 		AD193X_ADCR1_MUTE, 1, 1),
 	SOC_DOUBLE("ADC2 Switch", AD193X_ADC_CTRL0, AD193X_ADCL2_MUTE,
 		AD193X_ADCR2_MUTE, 1, 1),

 	/* DAC switch control */
 	SOC_DOUBLE("DAC1 Switch", AD193X_DAC_CHNL_MUTE, AD193X_DACL1_MUTE,
 		AD193X_DACR1_MUTE, 1, 1),
 	SOC_DOUBLE("DAC2 Switch", AD193X_DAC_CHNL_MUTE, AD193X_DACL2_MUTE,
 		AD193X_DACR2_MUTE, 1, 1),
 	SOC_DOUBLE("DAC3 Switch", AD193X_DAC_CHNL_MUTE, AD193X_DACL3_MUTE,
 		AD193X_DACR3_MUTE, 1, 1),
 	SOC_DOUBLE("DAC4 Switch", AD193X_DAC_CHNL_MUTE, AD193X_DACL4_MUTE,
 		AD193X_DACR4_MUTE, 1, 1),

 	/* ADC high-pass filter */
 	SOC_SINGLE("ADC High Pass Filter Switch", AD193X_ADC_CTRL0,
 			AD193X_ADC_HIGHPASS_FILTER, 1, 0),

 	/* DAC de-emphasis */
 	SOC_ENUM("Playback Deemphasis", ad193x_deemp_enum),
 };

 static const struct snd_soc_dapm_widget ad193x_dapm_widgets[] = {
 	SND_SOC_DAPM_DAC("DAC", "Playback", AD193X_DAC_CTRL0, 0, 1),
 	SND_SOC_DAPM_ADC("ADC", "Capture", SND_SOC_NOPM, 0, 0),
 	SND_SOC_DAPM_SUPPLY("PLL_PWR", AD193X_PLL_CLK_CTRL0, 0, 1, NULL, 0),
 	SND_SOC_DAPM_SUPPLY("ADC_PWR", AD193X_ADC_CTRL0, 0, 1, NULL, 0),
 	SND_SOC_DAPM_OUTPUT("DAC1OUT"),
 	SND_SOC_DAPM_OUTPUT("DAC2OUT"),
 	SND_SOC_DAPM_OUTPUT("DAC3OUT"),
 	SND_SOC_DAPM_OUTPUT("DAC4OUT"),
 	SND_SOC_DAPM_INPUT("ADC1IN"),
 	SND_SOC_DAPM_INPUT("ADC2IN"),
 };

 static const struct snd_soc_dapm_route audio_paths[] = {
 	{ "DAC", NULL, "PLL_PWR" },
 	{ "ADC", NULL, "PLL_PWR" },
 	{ "DAC", NULL, "ADC_PWR" },
 	{ "ADC", NULL, "ADC_PWR" },
 	{ "DAC1OUT", "DAC1 Switch", "DAC" },
 	{ "DAC2OUT", "DAC2 Switch", "DAC" },
 	{ "DAC3OUT", "DAC3 Switch", "DAC" },
 	{ "DAC4OUT", "DAC4 Switch", "DAC" },
 	{ "ADC", "ADC1 Switch", "ADC1IN" },
 	{ "ADC", "ADC2 Switch", "ADC2IN" },
 };

 /*
  * DAI ops entries
  */

 static int ad193x_mute(struct snd_soc_dai *dai, int mute)
 {
 	struct snd_soc_codec *codec = dai->codec;
 	int reg;

 	reg = snd_soc_read(codec, AD193X_DAC_CTRL2);
 	reg = (mute > 0) ? reg | AD193X_DAC_MASTER_MUTE : reg &
 		(~AD193X_DAC_MASTER_MUTE);
 	snd_soc_write(codec, AD193X_DAC_CTRL2, reg);

 	return 0;
 }

 static int ad193x_set_tdm_slot(struct snd_soc_dai *dai, unsigned int tx_mask,
 			       unsigned int rx_mask, int slots, int width)
 {
 	struct snd_soc_codec *codec = dai->codec;
 	int dac_reg = snd_soc_read(codec, AD193X_DAC_CTRL1);
 	int adc_reg = snd_soc_read(codec, AD193X_ADC_CTRL2);

 	dac_reg &= ~AD193X_DAC_CHAN_MASK;
 	adc_reg &= ~AD193X_ADC_CHAN_MASK;

 	switch (slots) {
 	case 2:
 		dac_reg |= AD193X_DAC_2_CHANNELS << AD193X_DAC_CHAN_SHFT;
 		adc_reg |= AD193X_ADC_2_CHANNELS << AD193X_ADC_CHAN_SHFT;
 		break;
 	case 4:
 		dac_reg |= AD193X_DAC_4_CHANNELS << AD193X_DAC_CHAN_SHFT;
 		adc_reg |= AD193X_ADC_4_CHANNELS << AD193X_ADC_CHAN_SHFT;
 		break;
 	case 8:
 		dac_reg |= AD193X_DAC_8_CHANNELS << AD193X_DAC_CHAN_SHFT;
 		adc_reg |= AD193X_ADC_8_CHANNELS << AD193X_ADC_CHAN_SHFT;
 		break;
 	case 16:
 		dac_reg |= AD193X_DAC_16_CHANNELS << AD193X_DAC_CHAN_SHFT;
 		adc_reg |= AD193X_ADC_16_CHANNELS << AD193X_ADC_CHAN_SHFT;
 		break;
 	default:
 		return -EINVAL;
 	}

 	snd_soc_write(codec, AD193X_DAC_CTRL1, dac_reg);
 	snd_soc_write(codec, AD193X_ADC_CTRL2, adc_reg);

 	return 0;
 }

 static int ad193x_set_dai_fmt(struct snd_soc_dai *codec_dai,
 		unsigned int fmt)
 {
 	struct snd_soc_codec *codec = codec_dai->codec;
 	int adc_reg1, adc_reg2, dac_reg;

 	adc_reg1 = snd_soc_read(codec, AD193X_ADC_CTRL1);
 	adc_reg2 = snd_soc_read(codec, AD193X_ADC_CTRL2);
 	dac_reg = snd_soc_read(codec, AD193X_DAC_CTRL1);

 	/* At present, the driver only support AUX ADC mode(SND_SOC_DAIFMT_I2S
 	 * with TDM) and ADC&DAC TDM mode(SND_SOC_DAIFMT_DSP_A)
 	 */
 	switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
 	case SND_SOC_DAIFMT_I2S:
 		adc_reg1 &= ~AD193X_ADC_SERFMT_MASK;
 		adc_reg1 |= AD193X_ADC_SERFMT_TDM;
 		break;
 	case SND_SOC_DAIFMT_DSP_A:
 		adc_reg1 &= ~AD193X_ADC_SERFMT_MASK;
 		adc_reg1 |= AD193X_ADC_SERFMT_AUX;
 		break;
 	default:
 		return -EINVAL;
 	}

 	switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
 	case SND_SOC_DAIFMT_NB_NF: /* normal bit clock + frame */
 		adc_reg2 &= ~AD193X_ADC_LEFT_HIGH;
 		adc_reg2 &= ~AD193X_ADC_BCLK_INV;
 		dac_reg &= ~AD193X_DAC_LEFT_HIGH;
 		dac_reg &= ~AD193X_DAC_BCLK_INV;
 		break;
 	case SND_SOC_DAIFMT_NB_IF: /* normal bclk + invert frm */
 		adc_reg2 |= AD193X_ADC_LEFT_HIGH;
 		adc_reg2 &= ~AD193X_ADC_BCLK_INV;
 		dac_reg |= AD193X_DAC_LEFT_HIGH;
 		dac_reg &= ~AD193X_DAC_BCLK_INV;
 		break;
 	case SND_SOC_DAIFMT_IB_NF: /* invert bclk + normal frm */
 		adc_reg2 &= ~AD193X_ADC_LEFT_HIGH;
 		adc_reg2 |= AD193X_ADC_BCLK_INV;
 		dac_reg &= ~AD193X_DAC_LEFT_HIGH;
 		dac_reg |= AD193X_DAC_BCLK_INV;
 		break;

 	case SND_SOC_DAIFMT_IB_IF: /* invert bclk + frm */
 		adc_reg2 |= AD193X_ADC_LEFT_HIGH;
 		adc_reg2 |= AD193X_ADC_BCLK_INV;
 		dac_reg |= AD193X_DAC_LEFT_HIGH;
 		dac_reg |= AD193X_DAC_BCLK_INV;
 		break;
 	default:
 		return -EINVAL;
 	}

 	switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
 	case SND_SOC_DAIFMT_CBM_CFM: /* codec clk & frm master */
 		adc_reg2 |= AD193X_ADC_LCR_MASTER;
 		adc_reg2 |= AD193X_ADC_BCLK_MASTER;
 		dac_reg |= AD193X_DAC_LCR_MASTER;
 		dac_reg |= AD193X_DAC_BCLK_MASTER;
 		break;
 	case SND_SOC_DAIFMT_CBS_CFM: /* codec clk slave & frm master */
 		adc_reg2 |= AD193X_ADC_LCR_MASTER;
 		adc_reg2 &= ~AD193X_ADC_BCLK_MASTER;
 		dac_reg |= AD193X_DAC_LCR_MASTER;
 		dac_reg &= ~AD193X_DAC_BCLK_MASTER;
 		break;
 	case SND_SOC_DAIFMT_CBM_CFS: /* codec clk master & frame slave */
 		adc_reg2 &= ~AD193X_ADC_LCR_MASTER;
 		adc_reg2 |= AD193X_ADC_BCLK_MASTER;
 		dac_reg &= ~AD193X_DAC_LCR_MASTER;
 		dac_reg |= AD193X_DAC_BCLK_MASTER;
 		break;
 	case SND_SOC_DAIFMT_CBS_CFS: /* codec clk & frm slave */
 		adc_reg2 &= ~AD193X_ADC_LCR_MASTER;
 		adc_reg2 &= ~AD193X_ADC_BCLK_MASTER;
 		dac_reg &= ~AD193X_DAC_LCR_MASTER;
 		dac_reg &= ~AD193X_DAC_BCLK_MASTER;
 		break;
 	default:
 		return -EINVAL;
 	}

 	snd_soc_write(codec, AD193X_ADC_CTRL1, adc_reg1);
 	snd_soc_write(codec, AD193X_ADC_CTRL2, adc_reg2);
 	snd_soc_write(codec, AD193X_DAC_CTRL1, dac_reg);

 	return 0;
 }

 static int ad193x_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 ad193x_priv *ad193x = snd_soc_codec_get_drvdata(codec);
 	switch (freq) {
 	case 12288000:
 	case 18432000:
 	case 24576000:
 	case 36864000:
 		ad193x->sysclk = freq;
 		return 0;
 	}
 	return -EINVAL;
 }

 static int ad193x_hw_params(struct snd_pcm_substream *substream,
 		struct snd_pcm_hw_params *params,
 		struct snd_soc_dai *dai)
 {
 	int word_len = 0, reg = 0, master_rate = 0;

 	struct snd_soc_pcm_runtime *rtd = substream->private_data;
 	struct snd_soc_codec *codec = rtd->codec;
 	struct ad193x_priv *ad193x = snd_soc_codec_get_drvdata(codec);

 	/* bit size */
 	switch (params_format(params)) {
 	case SNDRV_PCM_FORMAT_S16_LE:
 		word_len = 3;
 		break;
 	case SNDRV_PCM_FORMAT_S20_3LE:
 		word_len = 1;
 		break;
 	case SNDRV_PCM_FORMAT_S24_LE:
 	case SNDRV_PCM_FORMAT_S32_LE:
 		word_len = 0;
 		break;
 	}

 	switch (ad193x->sysclk) {
 	case 12288000:
 		master_rate = AD193X_PLL_INPUT_256;
 		break;
 	case 18432000:
 		master_rate = AD193X_PLL_INPUT_384;
 		break;
 	case 24576000:
 		master_rate = AD193X_PLL_INPUT_512;
 		break;
 	case 36864000:
 		master_rate = AD193X_PLL_INPUT_768;
 		break;
 	}

 	reg = snd_soc_read(codec, AD193X_PLL_CLK_CTRL0);
 	reg = (reg & AD193X_PLL_INPUT_MASK) | master_rate;
 	snd_soc_write(codec, AD193X_PLL_CLK_CTRL0, reg);

 	reg = snd_soc_read(codec, AD193X_DAC_CTRL2);
 	reg = (reg & (~AD193X_DAC_WORD_LEN_MASK)) | word_len;
 	snd_soc_write(codec, AD193X_DAC_CTRL2, reg);

 	reg = snd_soc_read(codec, AD193X_ADC_CTRL1);
 	reg = (reg & (~AD193X_ADC_WORD_LEN_MASK)) | word_len;
 	snd_soc_write(codec, AD193X_ADC_CTRL1, reg);

 	return 0;
 }

 static struct snd_soc_dai_ops ad193x_dai_ops = {
 	.hw_params = ad193x_hw_params,
 	.digital_mute = ad193x_mute,
 	.set_tdm_slot = ad193x_set_tdm_slot,
 	.set_sysclk	= ad193x_set_dai_sysclk,
 	.set_fmt = ad193x_set_dai_fmt,
 };

 /* codec DAI instance */
 static struct snd_soc_dai_driver ad193x_dai = {
 	.name = "ad193x-hifi",
 	.playback = {
 		.stream_name = "Playback",
 		.channels_min = 2,
 		.channels_max = 8,
 		.rates = SNDRV_PCM_RATE_48000,
 		.formats = SNDRV_PCM_FMTBIT_S32_LE | SNDRV_PCM_FMTBIT_S16_LE |
 			SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S24_LE,
 	},
 	.capture = {
 		.stream_name = "Capture",
 		.channels_min = 2,
 		.channels_max = 4,
 		.rates = SNDRV_PCM_RATE_48000,
 		.formats = SNDRV_PCM_FMTBIT_S32_LE | SNDRV_PCM_FMTBIT_S16_LE |
 			SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S24_LE,
 	},
 	.ops = &ad193x_dai_ops,
 };

 static int ad193x_probe(struct snd_soc_codec *codec)
 {
 	struct ad193x_priv *ad193x = snd_soc_codec_get_drvdata(codec);
 	struct snd_soc_dapm_context *dapm = &codec->dapm;
 	int ret;

 	codec->control_data = ad193x->control_data;
 	if (ad193x->bus_type == SND_SOC_I2C)
 		ret = snd_soc_codec_set_cache_io(codec, 8, 8, ad193x->bus_type);
 	else
 		ret = snd_soc_codec_set_cache_io(codec, 16, 8, ad193x->bus_type);
 	if (ret < 0) {
 		dev_err(codec->dev, "failed to set cache I/O: %d\n",
 				ret);
 		return ret;
 	}

 	/* default setting for ad193x */

 	/* unmute dac channels */
 	snd_soc_write(codec, AD193X_DAC_CHNL_MUTE, 0x0);
 	/* de-emphasis: 48kHz, powedown dac */
 	snd_soc_write(codec, AD193X_DAC_CTRL2, 0x1A);
 	/* powerdown dac, dac in tdm mode */
 	snd_soc_write(codec, AD193X_DAC_CTRL0, 0x41);
 	/* high-pass filter enable */
 	snd_soc_write(codec, AD193X_ADC_CTRL0, 0x3);
 	/* sata delay=1, adc aux mode */
 	snd_soc_write(codec, AD193X_ADC_CTRL1, 0x43);
 	/* pll input: mclki/xi */
 	snd_soc_write(codec, AD193X_PLL_CLK_CTRL0, 0x99); /* mclk=24.576Mhz: 0x9D; mclk=12.288Mhz: 0x99 */
 	snd_soc_write(codec, AD193X_PLL_CLK_CTRL1, 0x04);

 	snd_soc_add_controls(codec, ad193x_snd_controls,
 			     ARRAY_SIZE(ad193x_snd_controls));
 	snd_soc_dapm_new_controls(dapm, ad193x_dapm_widgets,
 				  ARRAY_SIZE(ad193x_dapm_widgets));
 	snd_soc_dapm_add_routes(dapm, audio_paths, ARRAY_SIZE(audio_paths));

 	return ret;
 }

 static struct snd_soc_codec_driver soc_codec_dev_ad193x = {
 	.probe = 	ad193x_probe,
 	.reg_cache_default = ad193x_reg,
 	.reg_cache_size = AD193X_NUM_REGS,
 	.reg_word_size = sizeof(u16),
 };

 #if defined(CONFIG_SPI_MASTER)
 static int __devinit ad193x_spi_probe(struct spi_device *spi)
 {
 	struct ad193x_priv *ad193x;
 	int ret;

 	ad193x = kzalloc(sizeof(struct ad193x_priv), GFP_KERNEL);
 	if (ad193x == NULL)
 		return -ENOMEM;

 	spi_set_drvdata(spi, ad193x);
 	ad193x->control_data = spi;
 	ad193x->bus_type = SND_SOC_SPI;

 	ret = snd_soc_register_codec(&spi->dev,
 			&soc_codec_dev_ad193x, &ad193x_dai, 1);
 	if (ret < 0)
 		kfree(ad193x);
 	return ret;
 }

 static int __devexit ad193x_spi_remove(struct spi_device *spi)
 {
 	snd_soc_unregister_codec(&spi->dev);
 	kfree(spi_get_drvdata(spi));
 	return 0;
 }

 static struct spi_driver ad193x_spi_driver = {
 	.driver = {
 		.name	= "ad193x-codec",
 		.owner	= THIS_MODULE,
 	},
 	.probe		= ad193x_spi_probe,
 	.remove		= __devexit_p(ad193x_spi_remove),
 };
 #endif

 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
 static const struct i2c_device_id ad193x_id[] = {
 	{ "ad1936", 0 },
 	{ "ad1937", 0 },
 	{ }
 };
 MODULE_DEVICE_TABLE(i2c, ad193x_id);

 static int __devinit ad193x_i2c_probe(struct i2c_client *client,
 		const struct i2c_device_id *id)
 {
 	struct ad193x_priv *ad193x;
 	int ret;

 	ad193x = kzalloc(sizeof(struct ad193x_priv), GFP_KERNEL);
 	if (ad193x == NULL)
 		return -ENOMEM;

 	i2c_set_clientdata(client, ad193x);
 	ad193x->control_data = client;
 	ad193x->bus_type = SND_SOC_I2C;

 	ret =  snd_soc_register_codec(&client->dev,
 			&soc_codec_dev_ad193x, &ad193x_dai, 1);
 	if (ret < 0)
 		kfree(ad193x);
 	return ret;
 }

 static int __devexit ad193x_i2c_remove(struct i2c_client *client)
 {
 	snd_soc_unregister_codec(&client->dev);
 	kfree(i2c_get_clientdata(client));
 	return 0;
 }

 static struct i2c_driver ad193x_i2c_driver = {
 	.driver = {
 		.name = "ad193x-codec",
 	},
 	.probe    = ad193x_i2c_probe,
 	.remove   = __devexit_p(ad193x_i2c_remove),
 	.id_table = ad193x_id,
 };
 #endif

 static int __init ad193x_modinit(void)
 {
 	int ret;

 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
 	ret =  i2c_add_driver(&ad193x_i2c_driver);
 	if (ret != 0) {
 		printk(KERN_ERR "Failed to register AD193X I2C driver: %d\n",
 				ret);
 	}
 #endif

 #if defined(CONFIG_SPI_MASTER)
 	ret = spi_register_driver(&ad193x_spi_driver);
 	if (ret != 0) {
 		printk(KERN_ERR "Failed to register AD193X SPI driver: %d\n",
 				ret);
 	}
 #endif
 	return ret;
 }
 module_init(ad193x_modinit);

 static void __exit ad193x_modexit(void)
 {
 #if defined(CONFIG_SPI_MASTER)
 	spi_unregister_driver(&ad193x_spi_driver);
 #endif

 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
 	i2c_del_driver(&ad193x_i2c_driver);
 #endif
 }
 module_exit(ad193x_modexit);

 MODULE_DESCRIPTION("ASoC ad193x driver");
 MODULE_AUTHOR("Barry Song <21cnbao@gmail.com>");
 MODULE_LICENSE("GPL");
	/*
	* AD193X Audio Codec driver supporting AD1936/7/8/9
	*
	* Copyright 2010 Analog Devices Inc.
	*
	* Licensed under the GPL-2 or later.
	*/

	#include <linux/init.h>
	#include <linux/module.h>
	#include <linux/kernel.h>
	#include <linux/device.h>
	#include <linux/i2c.h>
	#include <linux/spi/spi.h>
	#include <linux/slab.h>
	#include <sound/core.h>
	#include <sound/pcm.h>
	#include <sound/pcm_params.h>
	#include <sound/initval.h>
	#include <sound/soc.h>
	#include <sound/tlv.h>
	#include "ad193x.h"

	/* codec private data */
	struct ad193x_priv {
	u8 reg_cache[AD193X_NUM_REGS];
	enum snd_soc_control_type bus_type;
	void *control_data;
	int sysclk;
	};

	/* ad193x register cache & default register settings */
	static const u8 ad193x_reg[AD193X_NUM_REGS] = {
	0, 0, 0, 0, 0, 0, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0, 0, 0,
	};

	/*
	* AD193X volume/mute/de-emphasis etc. controls
	*/
	static const char *ad193x_deemp[] = {"None", "48kHz", "44.1kHz", "32kHz"};

	static const struct soc_enum ad193x_deemp_enum =
	SOC_ENUM_SINGLE(AD193X_DAC_CTRL2, 1, 4, ad193x_deemp);

	static const struct snd_kcontrol_new ad193x_snd_controls[] = {
	/* DAC volume control */
	SOC_DOUBLE_R("DAC1 Volume", AD193X_DAC_L1_VOL,
	AD193X_DAC_R1_VOL, 0, 0xFF, 1),
	SOC_DOUBLE_R("DAC2 Volume", AD193X_DAC_L2_VOL,
	AD193X_DAC_R2_VOL, 0, 0xFF, 1),
	SOC_DOUBLE_R("DAC3 Volume", AD193X_DAC_L3_VOL,
	AD193X_DAC_R3_VOL, 0, 0xFF, 1),
	SOC_DOUBLE_R("DAC4 Volume", AD193X_DAC_L4_VOL,
	AD193X_DAC_R4_VOL, 0, 0xFF, 1),

	/* ADC switch control */
	SOC_DOUBLE("ADC1 Switch", AD193X_ADC_CTRL0, AD193X_ADCL1_MUTE,
	AD193X_ADCR1_MUTE, 1, 1),
	SOC_DOUBLE("ADC2 Switch", AD193X_ADC_CTRL0, AD193X_ADCL2_MUTE,
	AD193X_ADCR2_MUTE, 1, 1),

	/* DAC switch control */
	SOC_DOUBLE("DAC1 Switch", AD193X_DAC_CHNL_MUTE, AD193X_DACL1_MUTE,
	AD193X_DACR1_MUTE, 1, 1),
	SOC_DOUBLE("DAC2 Switch", AD193X_DAC_CHNL_MUTE, AD193X_DACL2_MUTE,
	AD193X_DACR2_MUTE, 1, 1),
	SOC_DOUBLE("DAC3 Switch", AD193X_DAC_CHNL_MUTE, AD193X_DACL3_MUTE,
	AD193X_DACR3_MUTE, 1, 1),
	SOC_DOUBLE("DAC4 Switch", AD193X_DAC_CHNL_MUTE, AD193X_DACL4_MUTE,
	AD193X_DACR4_MUTE, 1, 1),

	/* ADC high-pass filter */
	SOC_SINGLE("ADC High Pass Filter Switch", AD193X_ADC_CTRL0,
	AD193X_ADC_HIGHPASS_FILTER, 1, 0),

	/* DAC de-emphasis */
	SOC_ENUM("Playback Deemphasis", ad193x_deemp_enum),
	};

	static const struct snd_soc_dapm_widget ad193x_dapm_widgets[] = {
	SND_SOC_DAPM_DAC("DAC", "Playback", AD193X_DAC_CTRL0, 0, 1),
	SND_SOC_DAPM_ADC("ADC", "Capture", SND_SOC_NOPM, 0, 0),
	SND_SOC_DAPM_SUPPLY("PLL_PWR", AD193X_PLL_CLK_CTRL0, 0, 1, NULL, 0),
	SND_SOC_DAPM_SUPPLY("ADC_PWR", AD193X_ADC_CTRL0, 0, 1, NULL, 0),
	SND_SOC_DAPM_OUTPUT("DAC1OUT"),
	SND_SOC_DAPM_OUTPUT("DAC2OUT"),
	SND_SOC_DAPM_OUTPUT("DAC3OUT"),
	SND_SOC_DAPM_OUTPUT("DAC4OUT"),
	SND_SOC_DAPM_INPUT("ADC1IN"),
	SND_SOC_DAPM_INPUT("ADC2IN"),
	};

	static const struct snd_soc_dapm_route audio_paths[] = {
	{ "DAC", NULL, "PLL_PWR" },
	{ "ADC", NULL, "PLL_PWR" },
	{ "DAC", NULL, "ADC_PWR" },
	{ "ADC", NULL, "ADC_PWR" },
	{ "DAC1OUT", "DAC1 Switch", "DAC" },
	{ "DAC2OUT", "DAC2 Switch", "DAC" },
	{ "DAC3OUT", "DAC3 Switch", "DAC" },
	{ "DAC4OUT", "DAC4 Switch", "DAC" },
	{ "ADC", "ADC1 Switch", "ADC1IN" },
	{ "ADC", "ADC2 Switch", "ADC2IN" },
	};

	/*
	* DAI ops entries
	*/

	static int ad193x_mute(struct snd_soc_dai *dai, int mute)
	{
	struct snd_soc_codec *codec = dai->codec;
	int reg;

	reg = snd_soc_read(codec, AD193X_DAC_CTRL2);
	reg = (mute > 0) ? reg \| AD193X_DAC_MASTER_MUTE : reg &
	(~AD193X_DAC_MASTER_MUTE);
	snd_soc_write(codec, AD193X_DAC_CTRL2, reg);

	return 0;
	}

	static int ad193x_set_tdm_slot(struct snd_soc_dai *dai, unsigned int tx_mask,
	unsigned int rx_mask, int slots, int width)
	{
	struct snd_soc_codec *codec = dai->codec;
	int dac_reg = snd_soc_read(codec, AD193X_DAC_CTRL1);
	int adc_reg = snd_soc_read(codec, AD193X_ADC_CTRL2);

	dac_reg &= ~AD193X_DAC_CHAN_MASK;
	adc_reg &= ~AD193X_ADC_CHAN_MASK;

	switch (slots) {
	case 2:
	dac_reg \|= AD193X_DAC_2_CHANNELS << AD193X_DAC_CHAN_SHFT;
	adc_reg \|= AD193X_ADC_2_CHANNELS << AD193X_ADC_CHAN_SHFT;
	break;
	case 4:
	dac_reg \|= AD193X_DAC_4_CHANNELS << AD193X_DAC_CHAN_SHFT;
	adc_reg \|= AD193X_ADC_4_CHANNELS << AD193X_ADC_CHAN_SHFT;
	break;
	case 8:
	dac_reg \|= AD193X_DAC_8_CHANNELS << AD193X_DAC_CHAN_SHFT;
	adc_reg \|= AD193X_ADC_8_CHANNELS << AD193X_ADC_CHAN_SHFT;
	break;
	case 16:
	dac_reg \|= AD193X_DAC_16_CHANNELS << AD193X_DAC_CHAN_SHFT;
	adc_reg \|= AD193X_ADC_16_CHANNELS << AD193X_ADC_CHAN_SHFT;
	break;
	default:
	return -EINVAL;
	}

	snd_soc_write(codec, AD193X_DAC_CTRL1, dac_reg);
	snd_soc_write(codec, AD193X_ADC_CTRL2, adc_reg);

	return 0;
	}

	static int ad193x_set_dai_fmt(struct snd_soc_dai *codec_dai,
	unsigned int fmt)
	{
	struct snd_soc_codec *codec = codec_dai->codec;
	int adc_reg1, adc_reg2, dac_reg;

	adc_reg1 = snd_soc_read(codec, AD193X_ADC_CTRL1);
	adc_reg2 = snd_soc_read(codec, AD193X_ADC_CTRL2);
	dac_reg = snd_soc_read(codec, AD193X_DAC_CTRL1);

	/* At present, the driver only support AUX ADC mode(SND_SOC_DAIFMT_I2S
	* with TDM) and ADC&DAC TDM mode(SND_SOC_DAIFMT_DSP_A)
	*/
	switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
	case SND_SOC_DAIFMT_I2S:
	adc_reg1 &= ~AD193X_ADC_SERFMT_MASK;
	adc_reg1 \|= AD193X_ADC_SERFMT_TDM;
	break;
	case SND_SOC_DAIFMT_DSP_A:
	adc_reg1 &= ~AD193X_ADC_SERFMT_MASK;
	adc_reg1 \|= AD193X_ADC_SERFMT_AUX;
	break;
	default:
	return -EINVAL;
	}

	switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
	case SND_SOC_DAIFMT_NB_NF: /* normal bit clock + frame */
	adc_reg2 &= ~AD193X_ADC_LEFT_HIGH;
	adc_reg2 &= ~AD193X_ADC_BCLK_INV;
	dac_reg &= ~AD193X_DAC_LEFT_HIGH;
	dac_reg &= ~AD193X_DAC_BCLK_INV;
	break;
	case SND_SOC_DAIFMT_NB_IF: /* normal bclk + invert frm */
	adc_reg2 \|= AD193X_ADC_LEFT_HIGH;
	adc_reg2 &= ~AD193X_ADC_BCLK_INV;
	dac_reg \|= AD193X_DAC_LEFT_HIGH;
	dac_reg &= ~AD193X_DAC_BCLK_INV;
	break;
	case SND_SOC_DAIFMT_IB_NF: /* invert bclk + normal frm */
	adc_reg2 &= ~AD193X_ADC_LEFT_HIGH;
	adc_reg2 \|= AD193X_ADC_BCLK_INV;
	dac_reg &= ~AD193X_DAC_LEFT_HIGH;
	dac_reg \|= AD193X_DAC_BCLK_INV;
	break;

	case SND_SOC_DAIFMT_IB_IF: /* invert bclk + frm */
	adc_reg2 \|= AD193X_ADC_LEFT_HIGH;
	adc_reg2 \|= AD193X_ADC_BCLK_INV;
	dac_reg \|= AD193X_DAC_LEFT_HIGH;
	dac_reg \|= AD193X_DAC_BCLK_INV;
	break;
	default:
	return -EINVAL;
	}

	switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
	case SND_SOC_DAIFMT_CBM_CFM: /* codec clk & frm master */
	adc_reg2 \|= AD193X_ADC_LCR_MASTER;
	adc_reg2 \|= AD193X_ADC_BCLK_MASTER;
	dac_reg \|= AD193X_DAC_LCR_MASTER;
	dac_reg \|= AD193X_DAC_BCLK_MASTER;
	break;
	case SND_SOC_DAIFMT_CBS_CFM: /* codec clk slave & frm master */
	adc_reg2 \|= AD193X_ADC_LCR_MASTER;
	adc_reg2 &= ~AD193X_ADC_BCLK_MASTER;
	dac_reg \|= AD193X_DAC_LCR_MASTER;
	dac_reg &= ~AD193X_DAC_BCLK_MASTER;
	break;
	case SND_SOC_DAIFMT_CBM_CFS: /* codec clk master & frame slave */
	adc_reg2 &= ~AD193X_ADC_LCR_MASTER;
	adc_reg2 \|= AD193X_ADC_BCLK_MASTER;
	dac_reg &= ~AD193X_DAC_LCR_MASTER;
	dac_reg \|= AD193X_DAC_BCLK_MASTER;
	break;
	case SND_SOC_DAIFMT_CBS_CFS: /* codec clk & frm slave */
	adc_reg2 &= ~AD193X_ADC_LCR_MASTER;
	adc_reg2 &= ~AD193X_ADC_BCLK_MASTER;
	dac_reg &= ~AD193X_DAC_LCR_MASTER;
	dac_reg &= ~AD193X_DAC_BCLK_MASTER;
	break;
	default:
	return -EINVAL;
	}

	snd_soc_write(codec, AD193X_ADC_CTRL1, adc_reg1);
	snd_soc_write(codec, AD193X_ADC_CTRL2, adc_reg2);
	snd_soc_write(codec, AD193X_DAC_CTRL1, dac_reg);

	return 0;
	}

	static int ad193x_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 ad193x_priv *ad193x = snd_soc_codec_get_drvdata(codec);
	switch (freq) {
	case 12288000:
	case 18432000:
	case 24576000:
	case 36864000:
	ad193x->sysclk = freq;
	return 0;
	}
	return -EINVAL;
	}

	static int ad193x_hw_params(struct snd_pcm_substream *substream,
	struct snd_pcm_hw_params *params,
	struct snd_soc_dai *dai)
	{
	int word_len = 0, reg = 0, master_rate = 0;

	struct snd_soc_pcm_runtime *rtd = substream->private_data;
	struct snd_soc_codec *codec = rtd->codec;
	struct ad193x_priv *ad193x = snd_soc_codec_get_drvdata(codec);

	/* bit size */
	switch (params_format(params)) {
	case SNDRV_PCM_FORMAT_S16_LE:
	word_len = 3;
	break;
	case SNDRV_PCM_FORMAT_S20_3LE:
	word_len = 1;
	break;
	case SNDRV_PCM_FORMAT_S24_LE:
	case SNDRV_PCM_FORMAT_S32_LE:
	word_len = 0;
	break;
	}

	switch (ad193x->sysclk) {
	case 12288000:
	master_rate = AD193X_PLL_INPUT_256;
	break;
	case 18432000:
	master_rate = AD193X_PLL_INPUT_384;
	break;
	case 24576000:
	master_rate = AD193X_PLL_INPUT_512;
	break;
	case 36864000:
	master_rate = AD193X_PLL_INPUT_768;
	break;
	}

	reg = snd_soc_read(codec, AD193X_PLL_CLK_CTRL0);
	reg = (reg & AD193X_PLL_INPUT_MASK) \| master_rate;
	snd_soc_write(codec, AD193X_PLL_CLK_CTRL0, reg);

	reg = snd_soc_read(codec, AD193X_DAC_CTRL2);
	reg = (reg & (~AD193X_DAC_WORD_LEN_MASK)) \| word_len;
	snd_soc_write(codec, AD193X_DAC_CTRL2, reg);

	reg = snd_soc_read(codec, AD193X_ADC_CTRL1);
	reg = (reg & (~AD193X_ADC_WORD_LEN_MASK)) \| word_len;
	snd_soc_write(codec, AD193X_ADC_CTRL1, reg);

	return 0;
	}

	static struct snd_soc_dai_ops ad193x_dai_ops = {
	.hw_params = ad193x_hw_params,
	.digital_mute = ad193x_mute,
	.set_tdm_slot = ad193x_set_tdm_slot,
	.set_sysclk = ad193x_set_dai_sysclk,
	.set_fmt = ad193x_set_dai_fmt,
	};

	/* codec DAI instance */
	static struct snd_soc_dai_driver ad193x_dai = {
	.name = "ad193x-hifi",
	.playback = {
	.stream_name = "Playback",
	.channels_min = 2,
	.channels_max = 8,
	.rates = SNDRV_PCM_RATE_48000,
	.formats = SNDRV_PCM_FMTBIT_S32_LE \| SNDRV_PCM_FMTBIT_S16_LE \|
	SNDRV_PCM_FMTBIT_S20_3LE \| SNDRV_PCM_FMTBIT_S24_LE,
	},
	.capture = {
	.stream_name = "Capture",
	.channels_min = 2,
	.channels_max = 4,
	.rates = SNDRV_PCM_RATE_48000,
	.formats = SNDRV_PCM_FMTBIT_S32_LE \| SNDRV_PCM_FMTBIT_S16_LE \|
	SNDRV_PCM_FMTBIT_S20_3LE \| SNDRV_PCM_FMTBIT_S24_LE,
	},
	.ops = &ad193x_dai_ops,
	};

	static int ad193x_probe(struct snd_soc_codec *codec)
	{
	struct ad193x_priv *ad193x = snd_soc_codec_get_drvdata(codec);
	struct snd_soc_dapm_context *dapm = &codec->dapm;
	int ret;

	codec->control_data = ad193x->control_data;
	if (ad193x->bus_type == SND_SOC_I2C)
	ret = snd_soc_codec_set_cache_io(codec, 8, 8, ad193x->bus_type);
	else
	ret = snd_soc_codec_set_cache_io(codec, 16, 8, ad193x->bus_type);
	if (ret < 0) {
	dev_err(codec->dev, "failed to set cache I/O: %d\n",
	ret);
	return ret;
	}

	/* default setting for ad193x */

	/* unmute dac channels */
	snd_soc_write(codec, AD193X_DAC_CHNL_MUTE, 0x0);
	/* de-emphasis: 48kHz, powedown dac */
	snd_soc_write(codec, AD193X_DAC_CTRL2, 0x1A);
	/* powerdown dac, dac in tdm mode */
	snd_soc_write(codec, AD193X_DAC_CTRL0, 0x41);
	/* high-pass filter enable */
	snd_soc_write(codec, AD193X_ADC_CTRL0, 0x3);
	/* sata delay=1, adc aux mode */
	snd_soc_write(codec, AD193X_ADC_CTRL1, 0x43);
	/* pll input: mclki/xi */
	snd_soc_write(codec, AD193X_PLL_CLK_CTRL0, 0x99); /* mclk=24.576Mhz: 0x9D; mclk=12.288Mhz: 0x99 */
	snd_soc_write(codec, AD193X_PLL_CLK_CTRL1, 0x04);

	snd_soc_add_controls(codec, ad193x_snd_controls,
	ARRAY_SIZE(ad193x_snd_controls));
	snd_soc_dapm_new_controls(dapm, ad193x_dapm_widgets,
	ARRAY_SIZE(ad193x_dapm_widgets));
	snd_soc_dapm_add_routes(dapm, audio_paths, ARRAY_SIZE(audio_paths));

	return ret;
	}

	static struct snd_soc_codec_driver soc_codec_dev_ad193x = {
	.probe = ad193x_probe,
	.reg_cache_default = ad193x_reg,
	.reg_cache_size = AD193X_NUM_REGS,
	.reg_word_size = sizeof(u16),
	};

	#if defined(CONFIG_SPI_MASTER)
	static int __devinit ad193x_spi_probe(struct spi_device *spi)
	{
	struct ad193x_priv *ad193x;
	int ret;

	ad193x = kzalloc(sizeof(struct ad193x_priv), GFP_KERNEL);
	if (ad193x == NULL)
	return -ENOMEM;

	spi_set_drvdata(spi, ad193x);
	ad193x->control_data = spi;
	ad193x->bus_type = SND_SOC_SPI;

	ret = snd_soc_register_codec(&spi->dev,
	&soc_codec_dev_ad193x, &ad193x_dai, 1);
	if (ret < 0)
	kfree(ad193x);
	return ret;
	}

	static int __devexit ad193x_spi_remove(struct spi_device *spi)
	{
	snd_soc_unregister_codec(&spi->dev);
	kfree(spi_get_drvdata(spi));
	return 0;
	}

	static struct spi_driver ad193x_spi_driver = {
	.driver = {
	.name = "ad193x-codec",
	.owner = THIS_MODULE,
	},
	.probe = ad193x_spi_probe,
	.remove = __devexit_p(ad193x_spi_remove),
	};
	#endif

	#if defined(CONFIG_I2C) \|\| defined(CONFIG_I2C_MODULE)
	static const struct i2c_device_id ad193x_id[] = {
	{ "ad1936", 0 },
	{ "ad1937", 0 },
	{ }
	};
	MODULE_DEVICE_TABLE(i2c, ad193x_id);

	static int __devinit ad193x_i2c_probe(struct i2c_client *client,
	const struct i2c_device_id *id)
	{
	struct ad193x_priv *ad193x;
	int ret;

	ad193x = kzalloc(sizeof(struct ad193x_priv), GFP_KERNEL);
	if (ad193x == NULL)
	return -ENOMEM;

	i2c_set_clientdata(client, ad193x);
	ad193x->control_data = client;
	ad193x->bus_type = SND_SOC_I2C;

	ret = snd_soc_register_codec(&client->dev,
	&soc_codec_dev_ad193x, &ad193x_dai, 1);
	if (ret < 0)
	kfree(ad193x);
	return ret;
	}

	static int __devexit ad193x_i2c_remove(struct i2c_client *client)
	{
	snd_soc_unregister_codec(&client->dev);
	kfree(i2c_get_clientdata(client));
	return 0;
	}

	static struct i2c_driver ad193x_i2c_driver = {
	.driver = {
	.name = "ad193x-codec",
	},
	.probe = ad193x_i2c_probe,
	.remove = __devexit_p(ad193x_i2c_remove),
	.id_table = ad193x_id,
	};
	#endif

	static int __init ad193x_modinit(void)
	{
	int ret;

	#if defined(CONFIG_I2C) \|\| defined(CONFIG_I2C_MODULE)
	ret = i2c_add_driver(&ad193x_i2c_driver);
	if (ret != 0) {
	printk(KERN_ERR "Failed to register AD193X I2C driver: %d\n",
	ret);
	}
	#endif

	#if defined(CONFIG_SPI_MASTER)
	ret = spi_register_driver(&ad193x_spi_driver);
	if (ret != 0) {
	printk(KERN_ERR "Failed to register AD193X SPI driver: %d\n",
	ret);
	}
	#endif
	return ret;
	}
	module_init(ad193x_modinit);

	static void __exit ad193x_modexit(void)
	{
	#if defined(CONFIG_SPI_MASTER)
	spi_unregister_driver(&ad193x_spi_driver);
	#endif

	#if defined(CONFIG_I2C) \|\| defined(CONFIG_I2C_MODULE)
	i2c_del_driver(&ad193x_i2c_driver);
	#endif
	}
	module_exit(ad193x_modexit);

	MODULE_DESCRIPTION("ASoC ad193x driver");
	MODULE_AUTHOR("Barry Song <21cnbao@gmail.com>");
	MODULE_LICENSE("GPL");