[deliverable/linux.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 {
	unsigned int sysclk;
	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_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_device *socdev = rtd->socdev;
	struct snd_soc_codec *codec = socdev->card->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 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);
	ad193x->sysclk = 12288000;

	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_sysclk	= ad193x_set_dai_sysclk,
	.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 {
fab90aa4	27	unsigned int sysclk;
a1533d94 BS	28	struct snd_soc_codec codec;
	29	u8 reg_cache[AD193X_NUM_REGS];
	30	};
	31
	32	/* ad193x register cache & default register settings */
	33	static const u8 ad193x_reg[AD193X_NUM_REGS] = {
	34	0, 0, 0, 0, 0, 0, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0, 0, 0,
	35	};
	36
	37	static struct snd_soc_codec *ad193x_codec;
	38	struct snd_soc_codec_device soc_codec_dev_ad193x;
a1533d94 BS	39
	40	/*
	41	* AD193X volume/mute/de-emphasis etc. controls
	42	*/
	43	static const char *ad193x_deemp[] = {"None", "48kHz", "44.1kHz", "32kHz"};
	44
	45	static const struct soc_enum ad193x_deemp_enum =
	46	SOC_ENUM_SINGLE(AD193X_DAC_CTRL2, 1, 4, ad193x_deemp);
	47
	48	static const struct snd_kcontrol_new ad193x_snd_controls[] = {
	49	/* DAC volume control */
ba0a24e7	50	SOC_DOUBLE_R("DAC1 Volume", AD193X_DAC_L1_VOL,
a1533d94	51	AD193X_DAC_R1_VOL, 0, 0xFF, 1),
ba0a24e7	52	SOC_DOUBLE_R("DAC2 Volume", AD193X_DAC_L2_VOL,
a1533d94	53	AD193X_DAC_R2_VOL, 0, 0xFF, 1),
ba0a24e7	54	SOC_DOUBLE_R("DAC3 Volume", AD193X_DAC_L3_VOL,
a1533d94	55	AD193X_DAC_R3_VOL, 0, 0xFF, 1),
ba0a24e7	56	SOC_DOUBLE_R("DAC4 Volume", AD193X_DAC_L4_VOL,
a1533d94 BS	57	AD193X_DAC_R4_VOL, 0, 0xFF, 1),
	58
	59	/* ADC switch control */
	60	SOC_DOUBLE("ADC1 Switch", AD193X_ADC_CTRL0, AD193X_ADCL1_MUTE,
	61	AD193X_ADCR1_MUTE, 1, 1),
	62	SOC_DOUBLE("ADC2 Switch", AD193X_ADC_CTRL0, AD193X_ADCL2_MUTE,
	63	AD193X_ADCR2_MUTE, 1, 1),
	64
	65	/* DAC switch control */
	66	SOC_DOUBLE("DAC1 Switch", AD193X_DAC_CHNL_MUTE, AD193X_DACL1_MUTE,
	67	AD193X_DACR1_MUTE, 1, 1),
	68	SOC_DOUBLE("DAC2 Switch", AD193X_DAC_CHNL_MUTE, AD193X_DACL2_MUTE,
	69	AD193X_DACR2_MUTE, 1, 1),
	70	SOC_DOUBLE("DAC3 Switch", AD193X_DAC_CHNL_MUTE, AD193X_DACL3_MUTE,
	71	AD193X_DACR3_MUTE, 1, 1),
	72	SOC_DOUBLE("DAC4 Switch", AD193X_DAC_CHNL_MUTE, AD193X_DACL4_MUTE,
	73	AD193X_DACR4_MUTE, 1, 1),
	74
	75	/* ADC high-pass filter */
	76	SOC_SINGLE("ADC High Pass Filter Switch", AD193X_ADC_CTRL0,
	77	AD193X_ADC_HIGHPASS_FILTER, 1, 0),
	78
	79	/* DAC de-emphasis */
	80	SOC_ENUM("Playback Deemphasis", ad193x_deemp_enum),
	81	};
	82
	83	static const struct snd_soc_dapm_widget ad193x_dapm_widgets[] = {
	84	SND_SOC_DAPM_DAC("DAC", "Playback", AD193X_DAC_CTRL0, 0, 1),
	85	SND_SOC_DAPM_ADC("ADC", "Capture", SND_SOC_NOPM, 0, 0),
	86	SND_SOC_DAPM_SUPPLY("PLL_PWR", AD193X_PLL_CLK_CTRL0, 0, 1, NULL, 0),
	87	SND_SOC_DAPM_SUPPLY("ADC_PWR", AD193X_ADC_CTRL0, 0, 1, NULL, 0),
	88	SND_SOC_DAPM_OUTPUT("DAC1OUT"),
	89	SND_SOC_DAPM_OUTPUT("DAC2OUT"),
	90	SND_SOC_DAPM_OUTPUT("DAC3OUT"),
	91	SND_SOC_DAPM_OUTPUT("DAC4OUT"),
	92	SND_SOC_DAPM_INPUT("ADC1IN"),
	93	SND_SOC_DAPM_INPUT("ADC2IN"),
	94	};
	95
	96	static const struct snd_soc_dapm_route audio_paths[] = {
	97	{ "DAC", NULL, "PLL_PWR" },
	98	{ "ADC", NULL, "PLL_PWR" },
	99	{ "DAC", NULL, "ADC_PWR" },
	100	{ "ADC", NULL, "ADC_PWR" },
	101	{ "DAC1OUT", "DAC1 Switch", "DAC" },
	102	{ "DAC2OUT", "DAC2 Switch", "DAC" },
	103	{ "DAC3OUT", "DAC3 Switch", "DAC" },
	104	{ "DAC4OUT", "DAC4 Switch", "DAC" },
	105	{ "ADC", "ADC1 Switch", "ADC1IN" },
	106	{ "ADC", "ADC2 Switch", "ADC2IN" },
	107	};
	108
	109	/*
	110	* DAI ops entries
	111	*/
	112
	113	static int ad193x_mute(struct snd_soc_dai *dai, int mute)
	114	{
	115	struct snd_soc_codec *codec = dai->codec;
	116	int reg;
	117
	118	reg = snd_soc_read(codec, AD193X_DAC_CTRL2);
	119	reg = (mute > 0) ? reg \| AD193X_DAC_MASTER_MUTE : reg &
	120	(~AD193X_DAC_MASTER_MUTE);
121	snd_soc_write(codec, AD193X_DAC_CTRL2, reg);
122
123	return 0;
124	}
125
126	static int ad193x_set_tdm_slot(struct snd_soc_dai *dai, unsigned int tx_mask,
127	unsigned int rx_mask, int slots, int width)
128	{
129	struct snd_soc_codec *codec = dai->codec;
130	int dac_reg = snd_soc_read(codec, AD193X_DAC_CTRL1);
131	int adc_reg = snd_soc_read(codec, AD193X_ADC_CTRL2);
132
133	dac_reg &= ~AD193X_DAC_CHAN_MASK;
134	adc_reg &= ~AD193X_ADC_CHAN_MASK;
135
136	switch (slots) {
137	case 2:
138	dac_reg \|= AD193X_DAC_2_CHANNELS << AD193X_DAC_CHAN_SHFT;
139	adc_reg \|= AD193X_ADC_2_CHANNELS << AD193X_ADC_CHAN_SHFT;
140	break;
141	case 4:
142	dac_reg \|= AD193X_DAC_4_CHANNELS << AD193X_DAC_CHAN_SHFT;
143	adc_reg \|= AD193X_ADC_4_CHANNELS << AD193X_ADC_CHAN_SHFT;
144	break;
145	case 8:
146	dac_reg \|= AD193X_DAC_8_CHANNELS << AD193X_DAC_CHAN_SHFT;
147	adc_reg \|= AD193X_ADC_8_CHANNELS << AD193X_ADC_CHAN_SHFT;
148	break;
149	case 16:
150	dac_reg \|= AD193X_DAC_16_CHANNELS << AD193X_DAC_CHAN_SHFT;
151	adc_reg \|= AD193X_ADC_16_CHANNELS << AD193X_ADC_CHAN_SHFT;
152	break;
153	default:
154	return -EINVAL;
155	}
156
157	snd_soc_write(codec, AD193X_DAC_CTRL1, dac_reg);
158	snd_soc_write(codec, AD193X_ADC_CTRL2, adc_reg);
159
160	return 0;
161	}
162
163	static int ad193x_set_dai_fmt(struct snd_soc_dai *codec_dai,
164	unsigned int fmt)
165	{
166	struct snd_soc_codec *codec = codec_dai->codec;
d6bdc0f7	167	int adc_reg1, adc_reg2, dac_reg;
a1533d94	168
d6bdc0f7 BS	169	adc_reg1 = snd_soc_read(codec, AD193X_ADC_CTRL1);
d6bdc0f7 BS	170	adc_reg2 = snd_soc_read(codec, AD193X_ADC_CTRL2);
a1533d94 BS	171	dac_reg = snd_soc_read(codec, AD193X_DAC_CTRL1);
	172
	173	/* At present, the driver only support AUX ADC mode(SND_SOC_DAIFMT_I2S
	174	* with TDM) and ADC&DAC TDM mode(SND_SOC_DAIFMT_DSP_A)
	175	*/
	176	switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
	177	case SND_SOC_DAIFMT_I2S:
d6bdc0f7 BS	178	adc_reg1 &= ~AD193X_ADC_SERFMT_MASK;
d6bdc0f7 BS	179	adc_reg1 \|= AD193X_ADC_SERFMT_TDM;
a1533d94 BS	180	break;
a1533d94 BS	181	case SND_SOC_DAIFMT_DSP_A:
d6bdc0f7 BS	182	adc_reg1 &= ~AD193X_ADC_SERFMT_MASK;
d6bdc0f7 BS	183	adc_reg1 \|= AD193X_ADC_SERFMT_AUX;
a1533d94 BS	184	break;
	185	default:
	186	return -EINVAL;
	187	}
	188
	189	switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
	190	case SND_SOC_DAIFMT_NB_NF: /* normal bit clock + frame */
d6bdc0f7 BS	191	adc_reg2 &= ~AD193X_ADC_LEFT_HIGH;
d6bdc0f7 BS	192	adc_reg2 &= ~AD193X_ADC_BCLK_INV;
a1533d94 BS	193	dac_reg &= ~AD193X_DAC_LEFT_HIGH;
	194	dac_reg &= ~AD193X_DAC_BCLK_INV;
	195	break;
	196	case SND_SOC_DAIFMT_NB_IF: /* normal bclk + invert frm */
d6bdc0f7 BS	197	adc_reg2 \|= AD193X_ADC_LEFT_HIGH;
d6bdc0f7 BS	198	adc_reg2 &= ~AD193X_ADC_BCLK_INV;
a1533d94 BS	199	dac_reg \|= AD193X_DAC_LEFT_HIGH;
	200	dac_reg &= ~AD193X_DAC_BCLK_INV;
	201	break;
	202	case SND_SOC_DAIFMT_IB_NF: /* invert bclk + normal frm */
d6bdc0f7 BS	203	adc_reg2 &= ~AD193X_ADC_LEFT_HIGH;
d6bdc0f7 BS	204	adc_reg2 \|= AD193X_ADC_BCLK_INV;
a1533d94 BS	205	dac_reg &= ~AD193X_DAC_LEFT_HIGH;
	206	dac_reg \|= AD193X_DAC_BCLK_INV;
	207	break;
	208
	209	case SND_SOC_DAIFMT_IB_IF: /* invert bclk + frm */
d6bdc0f7 BS	210	adc_reg2 \|= AD193X_ADC_LEFT_HIGH;
d6bdc0f7 BS	211	adc_reg2 \|= AD193X_ADC_BCLK_INV;
a1533d94 BS	212	dac_reg \|= AD193X_DAC_LEFT_HIGH;
	213	dac_reg \|= AD193X_DAC_BCLK_INV;
	214	break;
	215	default:
	216	return -EINVAL;
	217	}
	218
	219	switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
	220	case SND_SOC_DAIFMT_CBM_CFM: /* codec clk & frm master */
d6bdc0f7 BS	221	adc_reg2 \|= AD193X_ADC_LCR_MASTER;
d6bdc0f7 BS	222	adc_reg2 \|= AD193X_ADC_BCLK_MASTER;
a1533d94 BS	223	dac_reg \|= AD193X_DAC_LCR_MASTER;
	224	dac_reg \|= AD193X_DAC_BCLK_MASTER;
	225	break;
	226	case SND_SOC_DAIFMT_CBS_CFM: /* codec clk slave & frm master */
d6bdc0f7 BS	227	adc_reg2 \|= AD193X_ADC_LCR_MASTER;
d6bdc0f7 BS	228	adc_reg2 &= ~AD193X_ADC_BCLK_MASTER;
a1533d94 BS	229	dac_reg \|= AD193X_DAC_LCR_MASTER;
	230	dac_reg &= ~AD193X_DAC_BCLK_MASTER;
	231	break;
	232	case SND_SOC_DAIFMT_CBM_CFS: /* codec clk master & frame slave */
d6bdc0f7 BS	233	adc_reg2 &= ~AD193X_ADC_LCR_MASTER;
d6bdc0f7 BS	234	adc_reg2 \|= AD193X_ADC_BCLK_MASTER;
a1533d94 BS	235	dac_reg &= ~AD193X_DAC_LCR_MASTER;
	236	dac_reg \|= AD193X_DAC_BCLK_MASTER;
	237	break;
	238	case SND_SOC_DAIFMT_CBS_CFS: /* codec clk & frm slave */
d6bdc0f7 BS	239	adc_reg2 &= ~AD193X_ADC_LCR_MASTER;
d6bdc0f7 BS	240	adc_reg2 &= ~AD193X_ADC_BCLK_MASTER;
a1533d94 BS	241	dac_reg &= ~AD193X_DAC_LCR_MASTER;
	242	dac_reg &= ~AD193X_DAC_BCLK_MASTER;
	243	break;
	244	default:
	245	return -EINVAL;
	246	}
	247
d6bdc0f7 BS	248	snd_soc_write(codec, AD193X_ADC_CTRL1, adc_reg1);
d6bdc0f7 BS	249	snd_soc_write(codec, AD193X_ADC_CTRL2, adc_reg2);
a1533d94 BS	250	snd_soc_write(codec, AD193X_DAC_CTRL1, dac_reg);
	251
	252	return 0;
	253	}
	254
fab90aa4 BS	255	static int ad193x_set_dai_sysclk(struct snd_soc_dai *codec_dai,
	256	int clk_id, unsigned int freq, int dir)
	257	{
	258	struct snd_soc_codec *codec = codec_dai->codec;
	259	struct ad193x_priv *ad193x = snd_soc_codec_get_drvdata(codec);
	260	switch (freq) {
	261	case 12288000:
	262	case 18432000:
	263	case 24576000:
	264	case 36864000:
	265	ad193x->sysclk = freq;
	266	return 0;
	267	}
	268	return -EINVAL;
	269	}
	270
a1533d94 BS	271	static int ad193x_hw_params(struct snd_pcm_substream *substream,
	272	struct snd_pcm_hw_params *params,
	273	struct snd_soc_dai *dai)
	274	{
fab90aa4	275	int word_len = 0, reg = 0, master_rate = 0;
a1533d94 BS	276
	277	struct snd_soc_pcm_runtime *rtd = substream->private_data;
	278	struct snd_soc_device *socdev = rtd->socdev;
	279	struct snd_soc_codec *codec = socdev->card->codec;
fab90aa4	280	struct ad193x_priv *ad193x = snd_soc_codec_get_drvdata(codec);
a1533d94 BS	281
	282	/* bit size */
	283	switch (params_format(params)) {
	284	case SNDRV_PCM_FORMAT_S16_LE:
	285	word_len = 3;
	286	break;
	287	case SNDRV_PCM_FORMAT_S20_3LE:
	288	word_len = 1;
	289	break;
	290	case SNDRV_PCM_FORMAT_S24_LE:
	291	case SNDRV_PCM_FORMAT_S32_LE:
	292	word_len = 0;
	293	break;
	294	}
	295
fab90aa4 BS	296	switch (ad193x->sysclk) {
	297	case 12288000:
	298	master_rate = AD193X_PLL_INPUT_256;
	299	break;
	300	case 18432000:
	301	master_rate = AD193X_PLL_INPUT_384;
	302	break;
	303	case 24576000:
	304	master_rate = AD193X_PLL_INPUT_512;
	305	break;
	306	case 36864000:
	307	master_rate = AD193X_PLL_INPUT_768;
	308	break;
	309	}
	310
	311	reg = snd_soc_read(codec, AD193X_PLL_CLK_CTRL0);
	312	reg = (reg & AD193X_PLL_INPUT_MASK) \| master_rate;
	313	snd_soc_write(codec, AD193X_PLL_CLK_CTRL0, reg);
	314
a1533d94 BS	315	reg = snd_soc_read(codec, AD193X_DAC_CTRL2);
	316	reg = (reg & (~AD193X_DAC_WORD_LEN_MASK)) \| word_len;
	317	snd_soc_write(codec, AD193X_DAC_CTRL2, reg);
	318
	319	reg = snd_soc_read(codec, AD193X_ADC_CTRL1);
	320	reg = (reg & (~AD193X_ADC_WORD_LEN_MASK)) \| word_len;
	321	snd_soc_write(codec, AD193X_ADC_CTRL1, reg);
	322
	323	return 0;
	324	}
	325
cffce322	326	static int ad193x_bus_probe(struct device dev, void ctrl_data, int bus_type)
a1533d94 BS	327	{
	328	struct snd_soc_codec *codec;
	329	struct ad193x_priv *ad193x;
9dd7b79a BS	330	int ret;
	331
	332	if (ad193x_codec) {
	333	dev_err(dev, "Another ad193x is registered\n");
	334	return -EINVAL;
	335	}
a1533d94 BS	336
	337	ad193x = kzalloc(sizeof(struct ad193x_priv), GFP_KERNEL);
	338	if (ad193x == NULL)
	339	return -ENOMEM;
	340
a1533d94 BS	341	dev_set_drvdata(dev, ad193x);
a1533d94 BS	342
9dd7b79a	343	codec = &ad193x->codec;
a1533d94	344	mutex_init(&codec->mutex);
9dd7b79a BS	345	codec->control_data = ctrl_data;
9dd7b79a BS	346	codec->dev = dev;
b2c812e2	347	snd_soc_codec_set_drvdata(codec, ad193x);
a1533d94 BS	348	codec->reg_cache = ad193x->reg_cache;
	349	codec->reg_cache_size = AD193X_NUM_REGS;
	350	codec->name = "AD193X";
	351	codec->owner = THIS_MODULE;
	352	codec->dai = &ad193x_dai;
	353	codec->num_dai = 1;
	354	INIT_LIST_HEAD(&codec->dapm_widgets);
	355	INIT_LIST_HEAD(&codec->dapm_paths);
	356
	357	ad193x_dai.dev = codec->dev;
	358	ad193x_codec = codec;
	359
	360	memcpy(codec->reg_cache, ad193x_reg, AD193X_NUM_REGS);
	361
	362	if (bus_type == SND_SOC_I2C)
	363	ret = snd_soc_codec_set_cache_io(codec, 8, 8, bus_type);
	364	else
	365	ret = snd_soc_codec_set_cache_io(codec, 16, 8, bus_type);
	366	if (ret < 0) {
	367	dev_err(codec->dev, "failed to set cache I/O: %d\n",
	368	ret);
	369	kfree(ad193x);
	370	return ret;
	371	}
	372
	373	/* default setting for ad193x */
	374
	375	/* unmute dac channels */
	376	snd_soc_write(codec, AD193X_DAC_CHNL_MUTE, 0x0);
	377	/* de-emphasis: 48kHz, powedown dac */
	378	snd_soc_write(codec, AD193X_DAC_CTRL2, 0x1A);
	379	/* powerdown dac, dac in tdm mode */
	380	snd_soc_write(codec, AD193X_DAC_CTRL0, 0x41);
	381	/* high-pass filter enable */
	382	snd_soc_write(codec, AD193X_ADC_CTRL0, 0x3);
	383	/* sata delay=1, adc aux mode */
	384	snd_soc_write(codec, AD193X_ADC_CTRL1, 0x43);
	385	/* pll input: mclki/xi */
	386	snd_soc_write(codec, AD193X_PLL_CLK_CTRL0, 0x99); /* mclk=24.576Mhz: 0x9D; mclk=12.288Mhz: 0x99 */
	387	snd_soc_write(codec, AD193X_PLL_CLK_CTRL1, 0x04);
fab90aa4	388	ad193x->sysclk = 12288000;
a1533d94 BS	389
	390	ret = snd_soc_register_codec(codec);
	391	if (ret != 0) {
	392	dev_err(codec->dev, "Failed to register codec: %d\n", ret);
	393	kfree(ad193x);
	394	return ret;
	395	}
	396
	397	ret = snd_soc_register_dai(&ad193x_dai);
	398	if (ret != 0) {
	399	dev_err(codec->dev, "Failed to register DAI: %d\n", ret);
	400	snd_soc_unregister_codec(codec);
	401	kfree(ad193x);
	402	return ret;
	403	}
	404
	405	return 0;
	406	}
	407
9dd7b79a	408	static int ad193x_bus_remove(struct device *dev)
a1533d94	409	{
9dd7b79a BS	410	struct ad193x_priv *ad193x = dev_get_drvdata(dev);
9dd7b79a BS	411
a1533d94 BS	412	snd_soc_unregister_dai(&ad193x_dai);
	413	snd_soc_unregister_codec(&ad193x->codec);
	414	kfree(ad193x);
	415	ad193x_codec = NULL;
9dd7b79a BS	416
9dd7b79a BS	417	return 0;
a1533d94 BS	418	}
a1533d94 BS	419
9dd7b79a BS	420	static struct snd_soc_dai_ops ad193x_dai_ops = {
	421	.hw_params = ad193x_hw_params,
	422	.digital_mute = ad193x_mute,
	423	.set_tdm_slot = ad193x_set_tdm_slot,
fab90aa4	424	.set_sysclk = ad193x_set_dai_sysclk,
9dd7b79a BS	425	.set_fmt = ad193x_set_dai_fmt,
	426	};
	427
	428	/* codec DAI instance */
	429	struct snd_soc_dai ad193x_dai = {
	430	.name = "AD193X",
	431	.playback = {
	432	.stream_name = "Playback",
	433	.channels_min = 2,
	434	.channels_max = 8,
	435	.rates = SNDRV_PCM_RATE_48000,
	436	.formats = SNDRV_PCM_FMTBIT_S32_LE \| SNDRV_PCM_FMTBIT_S16_LE \|
	437	SNDRV_PCM_FMTBIT_S20_3LE \| SNDRV_PCM_FMTBIT_S24_LE,
	438	},
	439	.capture = {
	440	.stream_name = "Capture",
	441	.channels_min = 2,
	442	.channels_max = 4,
	443	.rates = SNDRV_PCM_RATE_48000,
	444	.formats = SNDRV_PCM_FMTBIT_S32_LE \| SNDRV_PCM_FMTBIT_S16_LE \|
	445	SNDRV_PCM_FMTBIT_S20_3LE \| SNDRV_PCM_FMTBIT_S24_LE,
	446	},
	447	.ops = &ad193x_dai_ops,
	448	};
	449	EXPORT_SYMBOL_GPL(ad193x_dai);
	450
a1533d94 BS	451	static int ad193x_probe(struct platform_device *pdev)
	452	{
	453	struct snd_soc_device *socdev = platform_get_drvdata(pdev);
	454	struct snd_soc_codec *codec;
	455	int ret = 0;
	456
	457	if (ad193x_codec == NULL) {
	458	dev_err(&pdev->dev, "Codec device not registered\n");
	459	return -ENODEV;
	460	}
	461
	462	socdev->card->codec = ad193x_codec;
	463	codec = ad193x_codec;
	464
	465	/* register pcms */
	466	ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1);
	467	if (ret < 0) {
	468	dev_err(codec->dev, "failed to create pcms: %d\n", ret);
	469	goto pcm_err;
	470	}
	471
	472	snd_soc_add_controls(codec, ad193x_snd_controls,
	473	ARRAY_SIZE(ad193x_snd_controls));
	474	snd_soc_dapm_new_controls(codec, ad193x_dapm_widgets,
	475	ARRAY_SIZE(ad193x_dapm_widgets));
	476	snd_soc_dapm_add_routes(codec, audio_paths, ARRAY_SIZE(audio_paths));
	477
	478	pcm_err:
	479	return ret;
	480	}
	481
	482	/* power down chip */
	483	static int ad193x_remove(struct platform_device *pdev)
	484	{
	485	struct snd_soc_device *socdev = platform_get_drvdata(pdev);
	486
	487	snd_soc_free_pcms(socdev);
	488	snd_soc_dapm_free(socdev);
	489
	490	return 0;
	491	}
	492
	493	struct snd_soc_codec_device soc_codec_dev_ad193x = {
	494	.probe = ad193x_probe,
	495	.remove = ad193x_remove,
	496	};
	497	EXPORT_SYMBOL_GPL(soc_codec_dev_ad193x);
	498
	499	#if defined(CONFIG_SPI_MASTER)
	500	static int __devinit ad193x_spi_probe(struct spi_device *spi)
	501	{
	502	return ad193x_bus_probe(&spi->dev, spi, SND_SOC_SPI);
	503	}
	504
	505	static int __devexit ad193x_spi_remove(struct spi_device *spi)
	506	{
	507	return ad193x_bus_remove(&spi->dev);
	508	}
	509
	510	static struct spi_driver ad193x_spi_driver = {
	511	.driver = {
	512	.name = "ad193x",
	513	.owner = THIS_MODULE,
	514	},
515	.probe = ad193x_spi_probe,
516	.remove = __devexit_p(ad193x_spi_remove),
517	};
518	#endif
519
520	#if defined(CONFIG_I2C) \|\| defined(CONFIG_I2C_MODULE)
521	static const struct i2c_device_id ad193x_id[] = {
522	{ "ad1936", 0 },
523	{ "ad1937", 0 },
524	{ }
525	};
526	MODULE_DEVICE_TABLE(i2c, ad193x_id);
527
528	static int __devinit ad193x_i2c_probe(struct i2c_client *client,
529	const struct i2c_device_id *id)
530	{
531	return ad193x_bus_probe(&client->dev, client, SND_SOC_I2C);
532	}
533
534	static int __devexit ad193x_i2c_remove(struct i2c_client *client)
535	{
536	return ad193x_bus_remove(&client->dev);
537	}
538
539	static struct i2c_driver ad193x_i2c_driver = {
540	.driver = {
541	.name = "ad193x",
542	},
543	.probe = ad193x_i2c_probe,
544	.remove = __devexit_p(ad193x_i2c_remove),
545	.id_table = ad193x_id,
546	};
547	#endif
548
549	static int __init ad193x_modinit(void)
550	{
551	int ret;
552
553	#if defined(CONFIG_I2C) \|\| defined(CONFIG_I2C_MODULE)
554	ret = i2c_add_driver(&ad193x_i2c_driver);
555	if (ret != 0) {
556	printk(KERN_ERR "Failed to register AD193X I2C driver: %d\n",
557	ret);
558	}
559	#endif
560
561	#if defined(CONFIG_SPI_MASTER)
562	ret = spi_register_driver(&ad193x_spi_driver);
563	if (ret != 0) {
564	printk(KERN_ERR "Failed to register AD193X SPI driver: %d\n",
565	ret);
566	}
567	#endif
568	return ret;
569	}
570	module_init(ad193x_modinit);
571
572	static void __exit ad193x_modexit(void)
573	{
574	#if defined(CONFIG_SPI_MASTER)
575	spi_unregister_driver(&ad193x_spi_driver);
576	#endif
577
578	#if defined(CONFIG_I2C) \|\| defined(CONFIG_I2C_MODULE)
579	i2c_del_driver(&ad193x_i2c_driver);
580	#endif
581	}
582	module_exit(ad193x_modexit);
583
584	MODULE_DESCRIPTION("ASoC ad193x driver");
585	MODULE_AUTHOR("Barry Song <21cnbao@gmail.com>");
586	MODULE_LICENSE("GPL");