[net-next-2.6.git] / sound / soc / codecs / ad193x.c

/*
 * 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 <sound/soc-dapm.h>
#include "ad193x.h"

/* codec private data */
struct ad193x_priv {
	struct snd_soc_codec codec;
	u8 reg_cache[AD193X_NUM_REGS];
};

/* 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,
};

static struct snd_soc_codec *ad193x_codec;
struct snd_soc_codec_device soc_codec_dev_ad193x;

/*
 * 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_hw_params(struct snd_pcm_substream *substream,
		struct snd_pcm_hw_params *params,
		struct snd_soc_dai *dai)
{
	int word_len = 0, reg = 0;

	struct snd_soc_pcm_runtime *rtd = substream->private_data;
	struct snd_soc_device *socdev = rtd->socdev;
	struct snd_soc_codec *codec = socdev->card->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;
	}

	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 int ad193x_bus_probe(struct device *dev, void *ctrl_data, int bus_type)
{
	struct snd_soc_codec *codec;
	struct ad193x_priv *ad193x;
	int ret;

	if (ad193x_codec) {
		dev_err(dev, "Another ad193x is registered\n");
		return -EINVAL;
	}

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

	dev_set_drvdata(dev, ad193x);

	codec = &ad193x->codec;
	mutex_init(&codec->mutex);
	codec->control_data = ctrl_data;
	codec->dev = dev;
	snd_soc_codec_set_drvdata(codec, ad193x);
	codec->reg_cache = ad193x->reg_cache;
	codec->reg_cache_size = AD193X_NUM_REGS;
	codec->name = "AD193X";
	codec->owner = THIS_MODULE;
	codec->dai = &ad193x_dai;
	codec->num_dai = 1;
	INIT_LIST_HEAD(&codec->dapm_widgets);
	INIT_LIST_HEAD(&codec->dapm_paths);

	ad193x_dai.dev = codec->dev;
	ad193x_codec = codec;

	memcpy(codec->reg_cache, ad193x_reg, AD193X_NUM_REGS);

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

	ret = snd_soc_register_codec(codec);
	if (ret != 0) {
		dev_err(codec->dev, "Failed to register codec: %d\n", ret);
		kfree(ad193x);
		return ret;
	}

	ret = snd_soc_register_dai(&ad193x_dai);
	if (ret != 0) {
		dev_err(codec->dev, "Failed to register DAI: %d\n", ret);
		snd_soc_unregister_codec(codec);
		kfree(ad193x);
		return ret;
	}

	return 0;
}

static int ad193x_bus_remove(struct device *dev)
{
	struct ad193x_priv *ad193x = dev_get_drvdata(dev);

	snd_soc_unregister_dai(&ad193x_dai);
	snd_soc_unregister_codec(&ad193x->codec);
	kfree(ad193x);
	ad193x_codec = NULL;

	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_fmt = ad193x_set_dai_fmt,
};

/* codec DAI instance */
struct snd_soc_dai ad193x_dai = {
	.name = "AD193X",
	.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,
};
EXPORT_SYMBOL_GPL(ad193x_dai);

static int ad193x_probe(struct platform_device *pdev)
{
	struct snd_soc_device *socdev = platform_get_drvdata(pdev);
	struct snd_soc_codec *codec;
	int ret = 0;

	if (ad193x_codec == NULL) {
		dev_err(&pdev->dev, "Codec device not registered\n");
		return -ENODEV;
	}

	socdev->card->codec = ad193x_codec;
	codec = ad193x_codec;

	/* register pcms */
	ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1);
	if (ret < 0) {
		dev_err(codec->dev, "failed to create pcms: %d\n", ret);
		goto pcm_err;
	}

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

pcm_err:
	return ret;
}

/* power down chip */
static int ad193x_remove(struct platform_device *pdev)
{
	struct snd_soc_device *socdev = platform_get_drvdata(pdev);

	snd_soc_free_pcms(socdev);
	snd_soc_dapm_free(socdev);

	return 0;
}

struct snd_soc_codec_device soc_codec_dev_ad193x = {
	.probe = 	ad193x_probe,
	.remove = 	ad193x_remove,
};
EXPORT_SYMBOL_GPL(soc_codec_dev_ad193x);

#if defined(CONFIG_SPI_MASTER)
static int __devinit ad193x_spi_probe(struct spi_device *spi)
{
	return ad193x_bus_probe(&spi->dev, spi, SND_SOC_SPI);
}

static int __devexit ad193x_spi_remove(struct spi_device *spi)
{
	return ad193x_bus_remove(&spi->dev);
}

static struct spi_driver ad193x_spi_driver = {
	.driver = {
		.name	= "ad193x",
		.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)
{
	return ad193x_bus_probe(&client->dev, client, SND_SOC_I2C);
}

static int __devexit ad193x_i2c_remove(struct i2c_client *client)
{
	return ad193x_bus_remove(&client->dev);
}

static struct i2c_driver ad193x_i2c_driver = {
	.driver = {
		.name = "ad193x",
	},
	.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");
Commit	Line	Data
a1533d94 BS	1	/*
	2	* AD193X Audio Codec driver supporting AD1936/7/8/9
	3	*
	4	* Copyright 2010 Analog Devices Inc.
	5	*
	6	* Licensed under the GPL-2 or later.
	7	*/
	8
	9	#include <linux/init.h>
	10	#include <linux/module.h>
	11	#include <linux/kernel.h>
	12	#include <linux/device.h>
	13	#include <linux/i2c.h>
	14	#include <linux/spi/spi.h>
1b132ea0	15	#include <linux/slab.h>
a1533d94 BS	16	#include <sound/core.h>
	17	#include <sound/pcm.h>
	18	#include <sound/pcm_params.h>
	19	#include <sound/initval.h>
	20	#include <sound/soc.h>
	21	#include <sound/tlv.h>
	22	#include <sound/soc-dapm.h>
	23	#include "ad193x.h"
	24
	25	/* codec private data */
	26	struct ad193x_priv {
	27	struct snd_soc_codec codec;
	28	u8 reg_cache[AD193X_NUM_REGS];
	29	};
	30
	31	/* ad193x register cache & default register settings */
	32	static const u8 ad193x_reg[AD193X_NUM_REGS] = {
	33	0, 0, 0, 0, 0, 0, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0, 0, 0,
	34	};
	35
	36	static struct snd_soc_codec *ad193x_codec;
	37	struct snd_soc_codec_device soc_codec_dev_ad193x;
a1533d94 BS	38
	39	/*
	40	* AD193X volume/mute/de-emphasis etc. controls
	41	*/
	42	static const char *ad193x_deemp[] = {"None", "48kHz", "44.1kHz", "32kHz"};
	43
	44	static const struct soc_enum ad193x_deemp_enum =
	45	SOC_ENUM_SINGLE(AD193X_DAC_CTRL2, 1, 4, ad193x_deemp);
	46
	47	static const struct snd_kcontrol_new ad193x_snd_controls[] = {
	48	/* DAC volume control */
ba0a24e7	49	SOC_DOUBLE_R("DAC1 Volume", AD193X_DAC_L1_VOL,
a1533d94	50	AD193X_DAC_R1_VOL, 0, 0xFF, 1),
ba0a24e7	51	SOC_DOUBLE_R("DAC2 Volume", AD193X_DAC_L2_VOL,
a1533d94	52	AD193X_DAC_R2_VOL, 0, 0xFF, 1),
ba0a24e7	53	SOC_DOUBLE_R("DAC3 Volume", AD193X_DAC_L3_VOL,
a1533d94	54	AD193X_DAC_R3_VOL, 0, 0xFF, 1),
ba0a24e7	55	SOC_DOUBLE_R("DAC4 Volume", AD193X_DAC_L4_VOL,
a1533d94 BS	56	AD193X_DAC_R4_VOL, 0, 0xFF, 1),
	57
	58	/* ADC switch control */
	59	SOC_DOUBLE("ADC1 Switch", AD193X_ADC_CTRL0, AD193X_ADCL1_MUTE,
	60	AD193X_ADCR1_MUTE, 1, 1),
	61	SOC_DOUBLE("ADC2 Switch", AD193X_ADC_CTRL0, AD193X_ADCL2_MUTE,
	62	AD193X_ADCR2_MUTE, 1, 1),
	63
	64	/* DAC switch control */
	65	SOC_DOUBLE("DAC1 Switch", AD193X_DAC_CHNL_MUTE, AD193X_DACL1_MUTE,
	66	AD193X_DACR1_MUTE, 1, 1),
	67	SOC_DOUBLE("DAC2 Switch", AD193X_DAC_CHNL_MUTE, AD193X_DACL2_MUTE,
	68	AD193X_DACR2_MUTE, 1, 1),
	69	SOC_DOUBLE("DAC3 Switch", AD193X_DAC_CHNL_MUTE, AD193X_DACL3_MUTE,
	70	AD193X_DACR3_MUTE, 1, 1),
	71	SOC_DOUBLE("DAC4 Switch", AD193X_DAC_CHNL_MUTE, AD193X_DACL4_MUTE,
	72	AD193X_DACR4_MUTE, 1, 1),
	73
	74	/* ADC high-pass filter */
	75	SOC_SINGLE("ADC High Pass Filter Switch", AD193X_ADC_CTRL0,
	76	AD193X_ADC_HIGHPASS_FILTER, 1, 0),
	77
	78	/* DAC de-emphasis */
	79	SOC_ENUM("Playback Deemphasis", ad193x_deemp_enum),
	80	};
	81
	82	static const struct snd_soc_dapm_widget ad193x_dapm_widgets[] = {
	83	SND_SOC_DAPM_DAC("DAC", "Playback", AD193X_DAC_CTRL0, 0, 1),
	84	SND_SOC_DAPM_ADC("ADC", "Capture", SND_SOC_NOPM, 0, 0),
	85	SND_SOC_DAPM_SUPPLY("PLL_PWR", AD193X_PLL_CLK_CTRL0, 0, 1, NULL, 0),
	86	SND_SOC_DAPM_SUPPLY("ADC_PWR", AD193X_ADC_CTRL0, 0, 1, NULL, 0),
	87	SND_SOC_DAPM_OUTPUT("DAC1OUT"),
	88	SND_SOC_DAPM_OUTPUT("DAC2OUT"),
	89	SND_SOC_DAPM_OUTPUT("DAC3OUT"),
	90	SND_SOC_DAPM_OUTPUT("DAC4OUT"),
	91	SND_SOC_DAPM_INPUT("ADC1IN"),
	92	SND_SOC_DAPM_INPUT("ADC2IN"),
	93	};
	94
	95	static const struct snd_soc_dapm_route audio_paths[] = {
	96	{ "DAC", NULL, "PLL_PWR" },
	97	{ "ADC", NULL, "PLL_PWR" },
	98	{ "DAC", NULL, "ADC_PWR" },
	99	{ "ADC", NULL, "ADC_PWR" },
	100	{ "DAC1OUT", "DAC1 Switch", "DAC" },
	101	{ "DAC2OUT", "DAC2 Switch", "DAC" },
	102	{ "DAC3OUT", "DAC3 Switch", "DAC" },
	103	{ "DAC4OUT", "DAC4 Switch", "DAC" },
	104	{ "ADC", "ADC1 Switch", "ADC1IN" },
	105	{ "ADC", "ADC2 Switch", "ADC2IN" },
	106	};
	107
	108	/*
	109	* DAI ops entries
	110	*/
	111
	112	static int ad193x_mute(struct snd_soc_dai *dai, int mute)
	113	{
	114	struct snd_soc_codec *codec = dai->codec;
	115	int reg;
	116
	117	reg = snd_soc_read(codec, AD193X_DAC_CTRL2);
	118	reg = (mute > 0) ? reg \| AD193X_DAC_MASTER_MUTE : reg &
	119	(~AD193X_DAC_MASTER_MUTE);
120	snd_soc_write(codec, AD193X_DAC_CTRL2, reg);
121
122	return 0;
123	}
124
125	static int ad193x_set_tdm_slot(struct snd_soc_dai *dai, unsigned int tx_mask,
126	unsigned int rx_mask, int slots, int width)
127	{
128	struct snd_soc_codec *codec = dai->codec;
129	int dac_reg = snd_soc_read(codec, AD193X_DAC_CTRL1);
130	int adc_reg = snd_soc_read(codec, AD193X_ADC_CTRL2);
131
132	dac_reg &= ~AD193X_DAC_CHAN_MASK;
133	adc_reg &= ~AD193X_ADC_CHAN_MASK;
134
135	switch (slots) {
136	case 2:
137	dac_reg \|= AD193X_DAC_2_CHANNELS << AD193X_DAC_CHAN_SHFT;
138	adc_reg \|= AD193X_ADC_2_CHANNELS << AD193X_ADC_CHAN_SHFT;
139	break;
140	case 4:
141	dac_reg \|= AD193X_DAC_4_CHANNELS << AD193X_DAC_CHAN_SHFT;
142	adc_reg \|= AD193X_ADC_4_CHANNELS << AD193X_ADC_CHAN_SHFT;
143	break;
144	case 8:
145	dac_reg \|= AD193X_DAC_8_CHANNELS << AD193X_DAC_CHAN_SHFT;
146	adc_reg \|= AD193X_ADC_8_CHANNELS << AD193X_ADC_CHAN_SHFT;
147	break;
148	case 16:
149	dac_reg \|= AD193X_DAC_16_CHANNELS << AD193X_DAC_CHAN_SHFT;
150	adc_reg \|= AD193X_ADC_16_CHANNELS << AD193X_ADC_CHAN_SHFT;
151	break;
152	default:
153	return -EINVAL;
154	}
155
156	snd_soc_write(codec, AD193X_DAC_CTRL1, dac_reg);
157	snd_soc_write(codec, AD193X_ADC_CTRL2, adc_reg);
158
159	return 0;
160	}
161
162	static int ad193x_set_dai_fmt(struct snd_soc_dai *codec_dai,
163	unsigned int fmt)
164	{
165	struct snd_soc_codec *codec = codec_dai->codec;
d6bdc0f7	166	int adc_reg1, adc_reg2, dac_reg;
a1533d94	167
d6bdc0f7 BS	168	adc_reg1 = snd_soc_read(codec, AD193X_ADC_CTRL1);
d6bdc0f7 BS	169	adc_reg2 = snd_soc_read(codec, AD193X_ADC_CTRL2);
a1533d94 BS	170	dac_reg = snd_soc_read(codec, AD193X_DAC_CTRL1);
	171
	172	/* At present, the driver only support AUX ADC mode(SND_SOC_DAIFMT_I2S
	173	* with TDM) and ADC&DAC TDM mode(SND_SOC_DAIFMT_DSP_A)
	174	*/
	175	switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
	176	case SND_SOC_DAIFMT_I2S:
d6bdc0f7 BS	177	adc_reg1 &= ~AD193X_ADC_SERFMT_MASK;
d6bdc0f7 BS	178	adc_reg1 \|= AD193X_ADC_SERFMT_TDM;
a1533d94 BS	179	break;
a1533d94 BS	180	case SND_SOC_DAIFMT_DSP_A:
d6bdc0f7 BS	181	adc_reg1 &= ~AD193X_ADC_SERFMT_MASK;
d6bdc0f7 BS	182	adc_reg1 \|= AD193X_ADC_SERFMT_AUX;
a1533d94 BS	183	break;
	184	default:
	185	return -EINVAL;
	186	}
	187
	188	switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
	189	case SND_SOC_DAIFMT_NB_NF: /* normal bit clock + frame */
d6bdc0f7 BS	190	adc_reg2 &= ~AD193X_ADC_LEFT_HIGH;
d6bdc0f7 BS	191	adc_reg2 &= ~AD193X_ADC_BCLK_INV;
a1533d94 BS	192	dac_reg &= ~AD193X_DAC_LEFT_HIGH;
	193	dac_reg &= ~AD193X_DAC_BCLK_INV;
	194	break;
	195	case SND_SOC_DAIFMT_NB_IF: /* normal bclk + invert frm */
d6bdc0f7 BS	196	adc_reg2 \|= AD193X_ADC_LEFT_HIGH;
d6bdc0f7 BS	197	adc_reg2 &= ~AD193X_ADC_BCLK_INV;
a1533d94 BS	198	dac_reg \|= AD193X_DAC_LEFT_HIGH;
	199	dac_reg &= ~AD193X_DAC_BCLK_INV;
	200	break;
	201	case SND_SOC_DAIFMT_IB_NF: /* invert bclk + normal frm */
d6bdc0f7 BS	202	adc_reg2 &= ~AD193X_ADC_LEFT_HIGH;
d6bdc0f7 BS	203	adc_reg2 \|= AD193X_ADC_BCLK_INV;
a1533d94 BS	204	dac_reg &= ~AD193X_DAC_LEFT_HIGH;
	205	dac_reg \|= AD193X_DAC_BCLK_INV;
	206	break;
	207
	208	case SND_SOC_DAIFMT_IB_IF: /* invert bclk + frm */
d6bdc0f7 BS	209	adc_reg2 \|= AD193X_ADC_LEFT_HIGH;
d6bdc0f7 BS	210	adc_reg2 \|= AD193X_ADC_BCLK_INV;
a1533d94 BS	211	dac_reg \|= AD193X_DAC_LEFT_HIGH;
	212	dac_reg \|= AD193X_DAC_BCLK_INV;
	213	break;
	214	default:
	215	return -EINVAL;
	216	}
	217
	218	switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
	219	case SND_SOC_DAIFMT_CBM_CFM: /* codec clk & frm master */
d6bdc0f7 BS	220	adc_reg2 \|= AD193X_ADC_LCR_MASTER;
d6bdc0f7 BS	221	adc_reg2 \|= AD193X_ADC_BCLK_MASTER;
a1533d94 BS	222	dac_reg \|= AD193X_DAC_LCR_MASTER;
	223	dac_reg \|= AD193X_DAC_BCLK_MASTER;
	224	break;
	225	case SND_SOC_DAIFMT_CBS_CFM: /* codec clk slave & frm master */
d6bdc0f7 BS	226	adc_reg2 \|= AD193X_ADC_LCR_MASTER;
d6bdc0f7 BS	227	adc_reg2 &= ~AD193X_ADC_BCLK_MASTER;
a1533d94 BS	228	dac_reg \|= AD193X_DAC_LCR_MASTER;
	229	dac_reg &= ~AD193X_DAC_BCLK_MASTER;
	230	break;
	231	case SND_SOC_DAIFMT_CBM_CFS: /* codec clk master & frame slave */
d6bdc0f7 BS	232	adc_reg2 &= ~AD193X_ADC_LCR_MASTER;
d6bdc0f7 BS	233	adc_reg2 \|= AD193X_ADC_BCLK_MASTER;
a1533d94 BS	234	dac_reg &= ~AD193X_DAC_LCR_MASTER;
	235	dac_reg \|= AD193X_DAC_BCLK_MASTER;
	236	break;
	237	case SND_SOC_DAIFMT_CBS_CFS: /* codec clk & frm slave */
d6bdc0f7 BS	238	adc_reg2 &= ~AD193X_ADC_LCR_MASTER;
d6bdc0f7 BS	239	adc_reg2 &= ~AD193X_ADC_BCLK_MASTER;
a1533d94 BS	240	dac_reg &= ~AD193X_DAC_LCR_MASTER;
	241	dac_reg &= ~AD193X_DAC_BCLK_MASTER;
	242	break;
	243	default:
	244	return -EINVAL;
	245	}
	246
d6bdc0f7 BS	247	snd_soc_write(codec, AD193X_ADC_CTRL1, adc_reg1);
d6bdc0f7 BS	248	snd_soc_write(codec, AD193X_ADC_CTRL2, adc_reg2);
a1533d94 BS	249	snd_soc_write(codec, AD193X_DAC_CTRL1, dac_reg);
	250
	251	return 0;
	252	}
	253
	254	static int ad193x_hw_params(struct snd_pcm_substream *substream,
	255	struct snd_pcm_hw_params *params,
	256	struct snd_soc_dai *dai)
	257	{
	258	int word_len = 0, reg = 0;
	259
	260	struct snd_soc_pcm_runtime *rtd = substream->private_data;
	261	struct snd_soc_device *socdev = rtd->socdev;
	262	struct snd_soc_codec *codec = socdev->card->codec;
	263
	264	/* bit size */
	265	switch (params_format(params)) {
	266	case SNDRV_PCM_FORMAT_S16_LE:
	267	word_len = 3;
	268	break;
	269	case SNDRV_PCM_FORMAT_S20_3LE:
	270	word_len = 1;
	271	break;
	272	case SNDRV_PCM_FORMAT_S24_LE:
	273	case SNDRV_PCM_FORMAT_S32_LE:
	274	word_len = 0;
	275	break;
	276	}
	277
	278	reg = snd_soc_read(codec, AD193X_DAC_CTRL2);
	279	reg = (reg & (~AD193X_DAC_WORD_LEN_MASK)) \| word_len;
	280	snd_soc_write(codec, AD193X_DAC_CTRL2, reg);
	281
	282	reg = snd_soc_read(codec, AD193X_ADC_CTRL1);
	283	reg = (reg & (~AD193X_ADC_WORD_LEN_MASK)) \| word_len;
	284	snd_soc_write(codec, AD193X_ADC_CTRL1, reg);
	285
	286	return 0;
	287	}
	288
cffce322	289	static int ad193x_bus_probe(struct device dev, void ctrl_data, int bus_type)
a1533d94 BS	290	{
	291	struct snd_soc_codec *codec;
	292	struct ad193x_priv *ad193x;
9dd7b79a BS	293	int ret;
	294
	295	if (ad193x_codec) {
	296	dev_err(dev, "Another ad193x is registered\n");
	297	return -EINVAL;
	298	}
a1533d94 BS	299
	300	ad193x = kzalloc(sizeof(struct ad193x_priv), GFP_KERNEL);
	301	if (ad193x == NULL)
	302	return -ENOMEM;
	303
a1533d94 BS	304	dev_set_drvdata(dev, ad193x);
a1533d94 BS	305
9dd7b79a	306	codec = &ad193x->codec;
a1533d94	307	mutex_init(&codec->mutex);
9dd7b79a BS	308	codec->control_data = ctrl_data;
9dd7b79a BS	309	codec->dev = dev;
b2c812e2	310	snd_soc_codec_set_drvdata(codec, ad193x);
a1533d94 BS	311	codec->reg_cache = ad193x->reg_cache;
	312	codec->reg_cache_size = AD193X_NUM_REGS;
	313	codec->name = "AD193X";
	314	codec->owner = THIS_MODULE;
	315	codec->dai = &ad193x_dai;
	316	codec->num_dai = 1;
	317	INIT_LIST_HEAD(&codec->dapm_widgets);
	318	INIT_LIST_HEAD(&codec->dapm_paths);
	319
	320	ad193x_dai.dev = codec->dev;
	321	ad193x_codec = codec;
	322
	323	memcpy(codec->reg_cache, ad193x_reg, AD193X_NUM_REGS);
	324
	325	if (bus_type == SND_SOC_I2C)
	326	ret = snd_soc_codec_set_cache_io(codec, 8, 8, bus_type);
	327	else
	328	ret = snd_soc_codec_set_cache_io(codec, 16, 8, bus_type);
	329	if (ret < 0) {
	330	dev_err(codec->dev, "failed to set cache I/O: %d\n",
	331	ret);
	332	kfree(ad193x);
	333	return ret;
	334	}
	335
	336	/* default setting for ad193x */
	337
	338	/* unmute dac channels */
	339	snd_soc_write(codec, AD193X_DAC_CHNL_MUTE, 0x0);
	340	/* de-emphasis: 48kHz, powedown dac */
	341	snd_soc_write(codec, AD193X_DAC_CTRL2, 0x1A);
	342	/* powerdown dac, dac in tdm mode */
	343	snd_soc_write(codec, AD193X_DAC_CTRL0, 0x41);
	344	/* high-pass filter enable */
	345	snd_soc_write(codec, AD193X_ADC_CTRL0, 0x3);
	346	/* sata delay=1, adc aux mode */
	347	snd_soc_write(codec, AD193X_ADC_CTRL1, 0x43);
	348	/* pll input: mclki/xi */
	349	snd_soc_write(codec, AD193X_PLL_CLK_CTRL0, 0x99); /* mclk=24.576Mhz: 0x9D; mclk=12.288Mhz: 0x99 */
	350	snd_soc_write(codec, AD193X_PLL_CLK_CTRL1, 0x04);
	351
	352	ret = snd_soc_register_codec(codec);
	353	if (ret != 0) {
	354	dev_err(codec->dev, "Failed to register codec: %d\n", ret);
	355	kfree(ad193x);
	356	return ret;
	357	}
	358
	359	ret = snd_soc_register_dai(&ad193x_dai);
	360	if (ret != 0) {
	361	dev_err(codec->dev, "Failed to register DAI: %d\n", ret);
	362	snd_soc_unregister_codec(codec);
	363	kfree(ad193x);
	364	return ret;
	365	}
	366
	367	return 0;
	368	}
	369
9dd7b79a	370	static int ad193x_bus_remove(struct device *dev)
a1533d94	371	{
9dd7b79a BS	372	struct ad193x_priv *ad193x = dev_get_drvdata(dev);
9dd7b79a BS	373
a1533d94 BS	374	snd_soc_unregister_dai(&ad193x_dai);
	375	snd_soc_unregister_codec(&ad193x->codec);
	376	kfree(ad193x);
	377	ad193x_codec = NULL;
9dd7b79a BS	378
9dd7b79a BS	379	return 0;
a1533d94 BS	380	}
a1533d94 BS	381
9dd7b79a BS	382	static struct snd_soc_dai_ops ad193x_dai_ops = {
	383	.hw_params = ad193x_hw_params,
	384	.digital_mute = ad193x_mute,
	385	.set_tdm_slot = ad193x_set_tdm_slot,
	386	.set_fmt = ad193x_set_dai_fmt,
	387	};
	388
	389	/* codec DAI instance */
	390	struct snd_soc_dai ad193x_dai = {
	391	.name = "AD193X",
	392	.playback = {
	393	.stream_name = "Playback",
	394	.channels_min = 2,
	395	.channels_max = 8,
	396	.rates = SNDRV_PCM_RATE_48000,
	397	.formats = SNDRV_PCM_FMTBIT_S32_LE \| SNDRV_PCM_FMTBIT_S16_LE \|
	398	SNDRV_PCM_FMTBIT_S20_3LE \| SNDRV_PCM_FMTBIT_S24_LE,
	399	},
	400	.capture = {
	401	.stream_name = "Capture",
	402	.channels_min = 2,
	403	.channels_max = 4,
	404	.rates = SNDRV_PCM_RATE_48000,
	405	.formats = SNDRV_PCM_FMTBIT_S32_LE \| SNDRV_PCM_FMTBIT_S16_LE \|
	406	SNDRV_PCM_FMTBIT_S20_3LE \| SNDRV_PCM_FMTBIT_S24_LE,
	407	},
	408	.ops = &ad193x_dai_ops,
	409	};
	410	EXPORT_SYMBOL_GPL(ad193x_dai);
	411
a1533d94 BS	412	static int ad193x_probe(struct platform_device *pdev)
	413	{
	414	struct snd_soc_device *socdev = platform_get_drvdata(pdev);
	415	struct snd_soc_codec *codec;
	416	int ret = 0;
	417
	418	if (ad193x_codec == NULL) {
	419	dev_err(&pdev->dev, "Codec device not registered\n");
	420	return -ENODEV;
	421	}
	422
	423	socdev->card->codec = ad193x_codec;
	424	codec = ad193x_codec;
	425
	426	/* register pcms */
	427	ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1);
	428	if (ret < 0) {
	429	dev_err(codec->dev, "failed to create pcms: %d\n", ret);
	430	goto pcm_err;
	431	}
	432
	433	snd_soc_add_controls(codec, ad193x_snd_controls,
	434	ARRAY_SIZE(ad193x_snd_controls));
	435	snd_soc_dapm_new_controls(codec, ad193x_dapm_widgets,
	436	ARRAY_SIZE(ad193x_dapm_widgets));
	437	snd_soc_dapm_add_routes(codec, audio_paths, ARRAY_SIZE(audio_paths));
	438
	439	pcm_err:
	440	return ret;
	441	}
	442
	443	/* power down chip */
	444	static int ad193x_remove(struct platform_device *pdev)
	445	{
	446	struct snd_soc_device *socdev = platform_get_drvdata(pdev);
	447
	448	snd_soc_free_pcms(socdev);
	449	snd_soc_dapm_free(socdev);
	450
	451	return 0;
	452	}
	453
	454	struct snd_soc_codec_device soc_codec_dev_ad193x = {
	455	.probe = ad193x_probe,
	456	.remove = ad193x_remove,
	457	};
	458	EXPORT_SYMBOL_GPL(soc_codec_dev_ad193x);
	459
	460	#if defined(CONFIG_SPI_MASTER)
	461	static int __devinit ad193x_spi_probe(struct spi_device *spi)
	462	{
	463	return ad193x_bus_probe(&spi->dev, spi, SND_SOC_SPI);
	464	}
	465
	466	static int __devexit ad193x_spi_remove(struct spi_device *spi)
	467	{
	468	return ad193x_bus_remove(&spi->dev);
	469	}
	470
	471	static struct spi_driver ad193x_spi_driver = {
	472	.driver = {
	473	.name = "ad193x",
	474	.owner = THIS_MODULE,
	475	},
476	.probe = ad193x_spi_probe,
477	.remove = __devexit_p(ad193x_spi_remove),
478	};
479	#endif
480
481	#if defined(CONFIG_I2C) \|\| defined(CONFIG_I2C_MODULE)
482	static const struct i2c_device_id ad193x_id[] = {
483	{ "ad1936", 0 },
484	{ "ad1937", 0 },
485	{ }
486	};
487	MODULE_DEVICE_TABLE(i2c, ad193x_id);
488
489	static int __devinit ad193x_i2c_probe(struct i2c_client *client,
490	const struct i2c_device_id *id)
491	{
492	return ad193x_bus_probe(&client->dev, client, SND_SOC_I2C);
493	}
494
495	static int __devexit ad193x_i2c_remove(struct i2c_client *client)
496	{
497	return ad193x_bus_remove(&client->dev);
498	}
499
500	static struct i2c_driver ad193x_i2c_driver = {
501	.driver = {
502	.name = "ad193x",
503	},
504	.probe = ad193x_i2c_probe,
505	.remove = __devexit_p(ad193x_i2c_remove),
506	.id_table = ad193x_id,
507	};
508	#endif
509
510	static int __init ad193x_modinit(void)
511	{
512	int ret;
513
514	#if defined(CONFIG_I2C) \|\| defined(CONFIG_I2C_MODULE)
515	ret = i2c_add_driver(&ad193x_i2c_driver);
516	if (ret != 0) {
517	printk(KERN_ERR "Failed to register AD193X I2C driver: %d\n",
518	ret);
519	}
520	#endif
521
522	#if defined(CONFIG_SPI_MASTER)
523	ret = spi_register_driver(&ad193x_spi_driver);
524	if (ret != 0) {
525	printk(KERN_ERR "Failed to register AD193X SPI driver: %d\n",
526	ret);
527	}
528	#endif
529	return ret;
530	}
531	module_init(ad193x_modinit);
532
533	static void __exit ad193x_modexit(void)
534	{
535	#if defined(CONFIG_SPI_MASTER)
536	spi_unregister_driver(&ad193x_spi_driver);
537	#endif
538
539	#if defined(CONFIG_I2C) \|\| defined(CONFIG_I2C_MODULE)
540	i2c_del_driver(&ad193x_i2c_driver);
541	#endif
542	}
543	module_exit(ad193x_modexit);
544
545	MODULE_DESCRIPTION("ASoC ad193x driver");
546	MODULE_AUTHOR("Barry Song <21cnbao@gmail.com>");
547	MODULE_LICENSE("GPL");