[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 {
	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;
static int ad193x_register(struct ad193x_priv *ad193x, int bus_type);
static void ad193x_unregister(struct ad193x_priv *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_reg, dac_reg;

	adc_reg = 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_reg &= ~AD193X_ADC_SERFMT_MASK;
		adc_reg |= AD193X_ADC_SERFMT_TDM;
		break;
	case SND_SOC_DAIFMT_DSP_A:
		adc_reg &= ~AD193X_ADC_SERFMT_MASK;
		adc_reg |= 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_reg &= ~AD193X_ADC_LEFT_HIGH;
		adc_reg &= ~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_reg |= AD193X_ADC_LEFT_HIGH;
		adc_reg &= ~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_reg &= ~AD193X_ADC_LEFT_HIGH;
		adc_reg |= 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_reg |= AD193X_ADC_LEFT_HIGH;
		adc_reg |= 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_reg |= AD193X_ADC_LCR_MASTER;
		adc_reg |= 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_reg |= AD193X_ADC_LCR_MASTER;
		adc_reg &= ~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_reg &= ~AD193X_ADC_LCR_MASTER;
		adc_reg |= 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_reg &= ~AD193X_ADC_LCR_MASTER;
		adc_reg &= ~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_CTRL2, adc_reg);
	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;

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

	codec = &ad193x->codec;
	codec->control_data = ctrl_data;
	codec->dev = dev;

	dev_set_drvdata(dev, ad193x);

	return ad193x_register(ad193x, bus_type);
}

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

	ad193x_unregister(ad193x);
	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_register(struct ad193x_priv *ad193x, int bus_type)
{
	int ret;
	struct snd_soc_codec *codec = &ad193x->codec;

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

	mutex_init(&codec->mutex);
	codec->private_data = 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 void ad193x_unregister(struct ad193x_priv *ad193x)
{
	snd_soc_unregister_dai(&ad193x_dai);
	snd_soc_unregister_codec(&ad193x->codec);
	kfree(ad193x);
	ad193x_codec = NULL;
}

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;
	38	static int ad193x_register(struct ad193x_priv *ad193x, int bus_type);
	39	static void ad193x_unregister(struct ad193x_priv *ad193x);
	40
	41	/*
	42	* AD193X volume/mute/de-emphasis etc. controls
	43	*/
	44	static const char *ad193x_deemp[] = {"None", "48kHz", "44.1kHz", "32kHz"};
	45
	46	static const struct soc_enum ad193x_deemp_enum =
	47	SOC_ENUM_SINGLE(AD193X_DAC_CTRL2, 1, 4, ad193x_deemp);
	48
	49	static const struct snd_kcontrol_new ad193x_snd_controls[] = {
	50	/* DAC volume control */
	51	SOC_DOUBLE_R("DAC1 Volume", AD193X_DAC_L1_VOL,
	52	AD193X_DAC_R1_VOL, 0, 0xFF, 1),
	53	SOC_DOUBLE_R("DAC2 Volume", AD193X_DAC_L2_VOL,
	54	AD193X_DAC_R2_VOL, 0, 0xFF, 1),
	55	SOC_DOUBLE_R("DAC3 Volume", AD193X_DAC_L3_VOL,
	56	AD193X_DAC_R3_VOL, 0, 0xFF, 1),
	57	SOC_DOUBLE_R("DAC4 Volume", AD193X_DAC_L4_VOL,
	58	AD193X_DAC_R4_VOL, 0, 0xFF, 1),
	59
	60	/* ADC switch control */
	61	SOC_DOUBLE("ADC1 Switch", AD193X_ADC_CTRL0, AD193X_ADCL1_MUTE,
	62	AD193X_ADCR1_MUTE, 1, 1),
	63	SOC_DOUBLE("ADC2 Switch", AD193X_ADC_CTRL0, AD193X_ADCL2_MUTE,
	64	AD193X_ADCR2_MUTE, 1, 1),
	65
	66	/* DAC switch control */
	67	SOC_DOUBLE("DAC1 Switch", AD193X_DAC_CHNL_MUTE, AD193X_DACL1_MUTE,
	68	AD193X_DACR1_MUTE, 1, 1),
	69	SOC_DOUBLE("DAC2 Switch", AD193X_DAC_CHNL_MUTE, AD193X_DACL2_MUTE,
	70	AD193X_DACR2_MUTE, 1, 1),
	71	SOC_DOUBLE("DAC3 Switch", AD193X_DAC_CHNL_MUTE, AD193X_DACL3_MUTE,
	72	AD193X_DACR3_MUTE, 1, 1),
	73	SOC_DOUBLE("DAC4 Switch", AD193X_DAC_CHNL_MUTE, AD193X_DACL4_MUTE,
	74	AD193X_DACR4_MUTE, 1, 1),
	75
	76	/* ADC high-pass filter */
	77	SOC_SINGLE("ADC High Pass Filter Switch", AD193X_ADC_CTRL0,
	78	AD193X_ADC_HIGHPASS_FILTER, 1, 0),
	79
80	/* DAC de-emphasis */
81	SOC_ENUM("Playback Deemphasis", ad193x_deemp_enum),
82	};
83
84	static const struct snd_soc_dapm_widget ad193x_dapm_widgets[] = {
85	SND_SOC_DAPM_DAC("DAC", "Playback", AD193X_DAC_CTRL0, 0, 1),
86	SND_SOC_DAPM_ADC("ADC", "Capture", SND_SOC_NOPM, 0, 0),
87	SND_SOC_DAPM_SUPPLY("PLL_PWR", AD193X_PLL_CLK_CTRL0, 0, 1, NULL, 0),
88	SND_SOC_DAPM_SUPPLY("ADC_PWR", AD193X_ADC_CTRL0, 0, 1, NULL, 0),
89	SND_SOC_DAPM_OUTPUT("DAC1OUT"),
90	SND_SOC_DAPM_OUTPUT("DAC2OUT"),
91	SND_SOC_DAPM_OUTPUT("DAC3OUT"),
92	SND_SOC_DAPM_OUTPUT("DAC4OUT"),
93	SND_SOC_DAPM_INPUT("ADC1IN"),
94	SND_SOC_DAPM_INPUT("ADC2IN"),
95	};
96
97	static const struct snd_soc_dapm_route audio_paths[] = {
98	{ "DAC", NULL, "PLL_PWR" },
99	{ "ADC", NULL, "PLL_PWR" },
100	{ "DAC", NULL, "ADC_PWR" },
101	{ "ADC", NULL, "ADC_PWR" },
102	{ "DAC1OUT", "DAC1 Switch", "DAC" },
103	{ "DAC2OUT", "DAC2 Switch", "DAC" },
104	{ "DAC3OUT", "DAC3 Switch", "DAC" },
105	{ "DAC4OUT", "DAC4 Switch", "DAC" },
106	{ "ADC", "ADC1 Switch", "ADC1IN" },
107	{ "ADC", "ADC2 Switch", "ADC2IN" },
108	};
109
110	/*
111	* DAI ops entries
112	*/
113
114	static int ad193x_mute(struct snd_soc_dai *dai, int mute)
115	{
116	struct snd_soc_codec *codec = dai->codec;
117	int reg;
118
119	reg = snd_soc_read(codec, AD193X_DAC_CTRL2);
120	reg = (mute > 0) ? reg \| AD193X_DAC_MASTER_MUTE : reg &
121	(~AD193X_DAC_MASTER_MUTE);
122	snd_soc_write(codec, AD193X_DAC_CTRL2, reg);
123
124	return 0;
125	}
126
127	static int ad193x_set_tdm_slot(struct snd_soc_dai *dai, unsigned int tx_mask,
128	unsigned int rx_mask, int slots, int width)
129	{
130	struct snd_soc_codec *codec = dai->codec;
131	int dac_reg = snd_soc_read(codec, AD193X_DAC_CTRL1);
132	int adc_reg = snd_soc_read(codec, AD193X_ADC_CTRL2);
133
134	dac_reg &= ~AD193X_DAC_CHAN_MASK;
135	adc_reg &= ~AD193X_ADC_CHAN_MASK;
136
137	switch (slots) {
138	case 2:
139	dac_reg \|= AD193X_DAC_2_CHANNELS << AD193X_DAC_CHAN_SHFT;
140	adc_reg \|= AD193X_ADC_2_CHANNELS << AD193X_ADC_CHAN_SHFT;
141	break;
142	case 4:
143	dac_reg \|= AD193X_DAC_4_CHANNELS << AD193X_DAC_CHAN_SHFT;
144	adc_reg \|= AD193X_ADC_4_CHANNELS << AD193X_ADC_CHAN_SHFT;
145	break;
146	case 8:
147	dac_reg \|= AD193X_DAC_8_CHANNELS << AD193X_DAC_CHAN_SHFT;
148	adc_reg \|= AD193X_ADC_8_CHANNELS << AD193X_ADC_CHAN_SHFT;
149	break;
150	case 16:
151	dac_reg \|= AD193X_DAC_16_CHANNELS << AD193X_DAC_CHAN_SHFT;
152	adc_reg \|= AD193X_ADC_16_CHANNELS << AD193X_ADC_CHAN_SHFT;
153	break;
154	default:
155	return -EINVAL;
156	}
157
158	snd_soc_write(codec, AD193X_DAC_CTRL1, dac_reg);
159	snd_soc_write(codec, AD193X_ADC_CTRL2, adc_reg);
160
161	return 0;
162	}
163
164	static int ad193x_set_dai_fmt(struct snd_soc_dai *codec_dai,
165	unsigned int fmt)
166	{
167	struct snd_soc_codec *codec = codec_dai->codec;
168	int adc_reg, dac_reg;
169
170	adc_reg = snd_soc_read(codec, AD193X_ADC_CTRL2);
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:
178	adc_reg &= ~AD193X_ADC_SERFMT_MASK;
179	adc_reg \|= AD193X_ADC_SERFMT_TDM;
180	break;
181	case SND_SOC_DAIFMT_DSP_A:
182	adc_reg &= ~AD193X_ADC_SERFMT_MASK;
183	adc_reg \|= AD193X_ADC_SERFMT_AUX;
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 */
191	adc_reg &= ~AD193X_ADC_LEFT_HIGH;
192	adc_reg &= ~AD193X_ADC_BCLK_INV;
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 */
197	adc_reg \|= AD193X_ADC_LEFT_HIGH;
198	adc_reg &= ~AD193X_ADC_BCLK_INV;
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 */
203	adc_reg &= ~AD193X_ADC_LEFT_HIGH;
204	adc_reg \|= AD193X_ADC_BCLK_INV;
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 */
210	adc_reg \|= AD193X_ADC_LEFT_HIGH;
211	adc_reg \|= AD193X_ADC_BCLK_INV;
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 */
221	adc_reg \|= AD193X_ADC_LCR_MASTER;
222	adc_reg \|= AD193X_ADC_BCLK_MASTER;
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 */
227	adc_reg \|= AD193X_ADC_LCR_MASTER;
228	adc_reg &= ~AD193X_ADC_BCLK_MASTER;
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 */
233	adc_reg &= ~AD193X_ADC_LCR_MASTER;
234	adc_reg \|= AD193X_ADC_BCLK_MASTER;
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 */
239	adc_reg &= ~AD193X_ADC_LCR_MASTER;
240	adc_reg &= ~AD193X_ADC_BCLK_MASTER;
241	dac_reg &= ~AD193X_DAC_LCR_MASTER;
242	dac_reg &= ~AD193X_DAC_BCLK_MASTER;
243	break;
244	default:
245	return -EINVAL;
246	}
247
248	snd_soc_write(codec, AD193X_ADC_CTRL2, adc_reg);
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;
	293
	294	ad193x = kzalloc(sizeof(struct ad193x_priv), GFP_KERNEL);
	295	if (ad193x == NULL)
	296	return -ENOMEM;
	297
	298	codec = &ad193x->codec;
	299	codec->control_data = ctrl_data;
	300	codec->dev = dev;
	301
	302	dev_set_drvdata(dev, ad193x);
	303
	304	return ad193x_register(ad193x, bus_type);
	305	}
a1533d94	306
cffce322	307	static int ad193x_bus_remove(struct device *dev)
a1533d94 BS	308	{
	309	struct ad193x_priv *ad193x = dev_get_drvdata(dev);
	310
	311	ad193x_unregister(ad193x);
	312	return 0;
	313	}
a1533d94 BS	314
	315	static struct snd_soc_dai_ops ad193x_dai_ops = {
	316	.hw_params = ad193x_hw_params,
	317	.digital_mute = ad193x_mute,
	318	.set_tdm_slot = ad193x_set_tdm_slot,
	319	.set_fmt = ad193x_set_dai_fmt,
	320	};
	321
	322	/* codec DAI instance */
	323	struct snd_soc_dai ad193x_dai = {
	324	.name = "AD193X",
	325	.playback = {
	326	.stream_name = "Playback",
	327	.channels_min = 2,
	328	.channels_max = 8,
	329	.rates = SNDRV_PCM_RATE_48000,
	330	.formats = SNDRV_PCM_FMTBIT_S32_LE \| SNDRV_PCM_FMTBIT_S16_LE \|
	331	SNDRV_PCM_FMTBIT_S20_3LE \| SNDRV_PCM_FMTBIT_S24_LE,
	332	},
	333	.capture = {
	334	.stream_name = "Capture",
	335	.channels_min = 2,
	336	.channels_max = 4,
	337	.rates = SNDRV_PCM_RATE_48000,
	338	.formats = SNDRV_PCM_FMTBIT_S32_LE \| SNDRV_PCM_FMTBIT_S16_LE \|
	339	SNDRV_PCM_FMTBIT_S20_3LE \| SNDRV_PCM_FMTBIT_S24_LE,
	340	},
	341	.ops = &ad193x_dai_ops,
	342	};
	343	EXPORT_SYMBOL_GPL(ad193x_dai);
	344
	345	static int ad193x_register(struct ad193x_priv *ad193x, int bus_type)
	346	{
	347	int ret;
	348	struct snd_soc_codec *codec = &ad193x->codec;
	349
	350	if (ad193x_codec) {
	351	dev_err(codec->dev, "Another ad193x is registered\n");
	352	return -EINVAL;
	353	}
	354
	355	mutex_init(&codec->mutex);
	356	codec->private_data = ad193x;
	357	codec->reg_cache = ad193x->reg_cache;
	358	codec->reg_cache_size = AD193X_NUM_REGS;
	359	codec->name = "AD193X";
	360	codec->owner = THIS_MODULE;
	361	codec->dai = &ad193x_dai;
	362	codec->num_dai = 1;
	363	INIT_LIST_HEAD(&codec->dapm_widgets);
	364	INIT_LIST_HEAD(&codec->dapm_paths);
	365
	366	ad193x_dai.dev = codec->dev;
	367	ad193x_codec = codec;
	368
	369	memcpy(codec->reg_cache, ad193x_reg, AD193X_NUM_REGS);
	370
	371	if (bus_type == SND_SOC_I2C)
	372	ret = snd_soc_codec_set_cache_io(codec, 8, 8, bus_type);
	373	else
	374	ret = snd_soc_codec_set_cache_io(codec, 16, 8, bus_type);
	375	if (ret < 0) {
	376	dev_err(codec->dev, "failed to set cache I/O: %d\n",
	377	ret);
378	kfree(ad193x);
379	return ret;
380	}
381
382	/* default setting for ad193x */
383
384	/* unmute dac channels */
385	snd_soc_write(codec, AD193X_DAC_CHNL_MUTE, 0x0);
386	/* de-emphasis: 48kHz, powedown dac */
387	snd_soc_write(codec, AD193X_DAC_CTRL2, 0x1A);
388	/* powerdown dac, dac in tdm mode */
389	snd_soc_write(codec, AD193X_DAC_CTRL0, 0x41);
390	/* high-pass filter enable */
391	snd_soc_write(codec, AD193X_ADC_CTRL0, 0x3);
392	/* sata delay=1, adc aux mode */
393	snd_soc_write(codec, AD193X_ADC_CTRL1, 0x43);
394	/* pll input: mclki/xi */
395	snd_soc_write(codec, AD193X_PLL_CLK_CTRL0, 0x99); /* mclk=24.576Mhz: 0x9D; mclk=12.288Mhz: 0x99 */
396	snd_soc_write(codec, AD193X_PLL_CLK_CTRL1, 0x04);
397
398	ret = snd_soc_register_codec(codec);
399	if (ret != 0) {
400	dev_err(codec->dev, "Failed to register codec: %d\n", ret);
401	kfree(ad193x);
402	return ret;
403	}
404
405	ret = snd_soc_register_dai(&ad193x_dai);
406	if (ret != 0) {
407	dev_err(codec->dev, "Failed to register DAI: %d\n", ret);
408	snd_soc_unregister_codec(codec);
409	kfree(ad193x);
410	return ret;
411	}
412
413	return 0;
414	}
415
416	static void ad193x_unregister(struct ad193x_priv *ad193x)
417	{
418	snd_soc_unregister_dai(&ad193x_dai);
419	snd_soc_unregister_codec(&ad193x->codec);
420	kfree(ad193x);
421	ad193x_codec = NULL;
422	}
423
424	static int ad193x_probe(struct platform_device *pdev)
425	{
426	struct snd_soc_device *socdev = platform_get_drvdata(pdev);
427	struct snd_soc_codec *codec;
428	int ret = 0;
429
430	if (ad193x_codec == NULL) {
431	dev_err(&pdev->dev, "Codec device not registered\n");
432	return -ENODEV;
433	}
434
435	socdev->card->codec = ad193x_codec;
436	codec = ad193x_codec;
437
438	/* register pcms */
439	ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1);
440	if (ret < 0) {
441	dev_err(codec->dev, "failed to create pcms: %d\n", ret);
442	goto pcm_err;
443	}
444
445	snd_soc_add_controls(codec, ad193x_snd_controls,
446	ARRAY_SIZE(ad193x_snd_controls));
447	snd_soc_dapm_new_controls(codec, ad193x_dapm_widgets,
448	ARRAY_SIZE(ad193x_dapm_widgets));
449	snd_soc_dapm_add_routes(codec, audio_paths, ARRAY_SIZE(audio_paths));
450
451	pcm_err:
452	return ret;
453	}
454
455	/* power down chip */
456	static int ad193x_remove(struct platform_device *pdev)
457	{
458	struct snd_soc_device *socdev = platform_get_drvdata(pdev);
459
460	snd_soc_free_pcms(socdev);
461	snd_soc_dapm_free(socdev);
462
463	return 0;
464	}
465
466	struct snd_soc_codec_device soc_codec_dev_ad193x = {
467	.probe = ad193x_probe,
468	.remove = ad193x_remove,
469	};
470	EXPORT_SYMBOL_GPL(soc_codec_dev_ad193x);
471
472	#if defined(CONFIG_SPI_MASTER)
473	static int __devinit ad193x_spi_probe(struct spi_device *spi)
474	{
475	return ad193x_bus_probe(&spi->dev, spi, SND_SOC_SPI);
476	}
477
478	static int __devexit ad193x_spi_remove(struct spi_device *spi)
479	{
480	return ad193x_bus_remove(&spi->dev);
481	}
482
483	static struct spi_driver ad193x_spi_driver = {
484	.driver = {
485	.name = "ad193x",
486	.owner = THIS_MODULE,
487	},
488	.probe = ad193x_spi_probe,
489	.remove = __devexit_p(ad193x_spi_remove),
490	};
491	#endif
492
493	#if defined(CONFIG_I2C) \|\| defined(CONFIG_I2C_MODULE)
494	static const struct i2c_device_id ad193x_id[] = {
495	{ "ad1936", 0 },
496	{ "ad1937", 0 },
497	{ }
498	};
499	MODULE_DEVICE_TABLE(i2c, ad193x_id);
500
501	static int __devinit ad193x_i2c_probe(struct i2c_client *client,
502	const struct i2c_device_id *id)
503	{
504	return ad193x_bus_probe(&client->dev, client, SND_SOC_I2C);
505	}
506
507	static int __devexit ad193x_i2c_remove(struct i2c_client *client)
508	{
509	return ad193x_bus_remove(&client->dev);
510	}
511
512	static struct i2c_driver ad193x_i2c_driver = {
513	.driver = {
514	.name = "ad193x",
515	},
516	.probe = ad193x_i2c_probe,
517	.remove = __devexit_p(ad193x_i2c_remove),
518	.id_table = ad193x_id,
519	};
520	#endif
521
522	static int __init ad193x_modinit(void)
523	{
524	int ret;
525
526	#if defined(CONFIG_I2C) \|\| defined(CONFIG_I2C_MODULE)
527	ret = i2c_add_driver(&ad193x_i2c_driver);
528	if (ret != 0) {
529	printk(KERN_ERR "Failed to register AD193X I2C driver: %d\n",
530	ret);
531	}
532	#endif
533
534	#if defined(CONFIG_SPI_MASTER)
535	ret = spi_register_driver(&ad193x_spi_driver);
536	if (ret != 0) {
537	printk(KERN_ERR "Failed to register AD193X SPI driver: %d\n",
538	ret);
539	}
540	#endif
541	return ret;
542	}
543	module_init(ad193x_modinit);
544
545	static void __exit ad193x_modexit(void)
546	{
547	#if defined(CONFIG_SPI_MASTER)
548	spi_unregister_driver(&ad193x_spi_driver);
549	#endif
550
551	#if defined(CONFIG_I2C) \|\| defined(CONFIG_I2C_MODULE)
552	i2c_del_driver(&ad193x_i2c_driver);
553	#endif
554	}
555	module_exit(ad193x_modexit);
556
557	MODULE_DESCRIPTION("ASoC ad193x driver");
558	MODULE_AUTHOR("Barry Song <21cnbao@gmail.com>");
559	MODULE_LICENSE("GPL");