[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 <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;
}

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);
}
EXPORT_SYMBOL_GPL(ad193x_bus_probe);

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

	ad193x_unregister(ad193x);
	return 0;
}
EXPORT_SYMBOL_GPL(ad193x_bus_remove);

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>
	15	#include <sound/core.h>
	16	#include <sound/pcm.h>
	17	#include <sound/pcm_params.h>
	18	#include <sound/initval.h>
	19	#include <sound/soc.h>
	20	#include <sound/tlv.h>
	21	#include <sound/soc-dapm.h>
	22	#include "ad193x.h"
	23
	24	/* codec private data */
	25	struct ad193x_priv {
	26	struct snd_soc_codec codec;
	27	u8 reg_cache[AD193X_NUM_REGS];
	28	};
	29
	30	/* ad193x register cache & default register settings */
	31	static const u8 ad193x_reg[AD193X_NUM_REGS] = {
	32	0, 0, 0, 0, 0, 0, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0, 0, 0,
	33	};
	34
	35	static struct snd_soc_codec *ad193x_codec;
	36	struct snd_soc_codec_device soc_codec_dev_ad193x;
	37	static int ad193x_register(struct ad193x_priv *ad193x, int bus_type);
	38	static void ad193x_unregister(struct ad193x_priv *ad193x);
	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 */
	50	SOC_DOUBLE_R("DAC1 Volume", AD193X_DAC_L1_VOL,
	51	AD193X_DAC_R1_VOL, 0, 0xFF, 1),
	52	SOC_DOUBLE_R("DAC2 Volume", AD193X_DAC_L2_VOL,
	53	AD193X_DAC_R2_VOL, 0, 0xFF, 1),
	54	SOC_DOUBLE_R("DAC3 Volume", AD193X_DAC_L3_VOL,
	55	AD193X_DAC_R3_VOL, 0, 0xFF, 1),
	56	SOC_DOUBLE_R("DAC4 Volume", AD193X_DAC_L4_VOL,
	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;
167	int adc_reg, dac_reg;
168
169	adc_reg = snd_soc_read(codec, AD193X_ADC_CTRL2);
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:
177	adc_reg &= ~AD193X_ADC_SERFMT_MASK;
178	adc_reg \|= AD193X_ADC_SERFMT_TDM;
179	break;
180	case SND_SOC_DAIFMT_DSP_A:
181	adc_reg &= ~AD193X_ADC_SERFMT_MASK;
182	adc_reg \|= AD193X_ADC_SERFMT_AUX;
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 */
190	adc_reg &= ~AD193X_ADC_LEFT_HIGH;
191	adc_reg &= ~AD193X_ADC_BCLK_INV;
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 */
196	adc_reg \|= AD193X_ADC_LEFT_HIGH;
197	adc_reg &= ~AD193X_ADC_BCLK_INV;
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 */
202	adc_reg &= ~AD193X_ADC_LEFT_HIGH;
203	adc_reg \|= AD193X_ADC_BCLK_INV;
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 */
209	adc_reg \|= AD193X_ADC_LEFT_HIGH;
210	adc_reg \|= AD193X_ADC_BCLK_INV;
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 */
220	adc_reg \|= AD193X_ADC_LCR_MASTER;
221	adc_reg \|= AD193X_ADC_BCLK_MASTER;
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 */
226	adc_reg \|= AD193X_ADC_LCR_MASTER;
227	adc_reg &= ~AD193X_ADC_BCLK_MASTER;
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 */
232	adc_reg &= ~AD193X_ADC_LCR_MASTER;
233	adc_reg \|= AD193X_ADC_BCLK_MASTER;
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 */
238	adc_reg &= ~AD193X_ADC_LCR_MASTER;
239	adc_reg &= ~AD193X_ADC_BCLK_MASTER;
240	dac_reg &= ~AD193X_DAC_LCR_MASTER;
241	dac_reg &= ~AD193X_DAC_BCLK_MASTER;
242	break;
243	default:
244	return -EINVAL;
245	}
246
247	snd_soc_write(codec, AD193X_ADC_CTRL2, adc_reg);
248	snd_soc_write(codec, AD193X_DAC_CTRL1, dac_reg);
249
250	return 0;
251	}
252
253	static int ad193x_hw_params(struct snd_pcm_substream *substream,
254	struct snd_pcm_hw_params *params,
255	struct snd_soc_dai *dai)
256	{
257	int word_len = 0, reg = 0;
258
259	struct snd_soc_pcm_runtime *rtd = substream->private_data;
260	struct snd_soc_device *socdev = rtd->socdev;
261	struct snd_soc_codec *codec = socdev->card->codec;
262
263	/* bit size */
264	switch (params_format(params)) {
265	case SNDRV_PCM_FORMAT_S16_LE:
266	word_len = 3;
267	break;
268	case SNDRV_PCM_FORMAT_S20_3LE:
269	word_len = 1;
270	break;
271	case SNDRV_PCM_FORMAT_S24_LE:
272	case SNDRV_PCM_FORMAT_S32_LE:
273	word_len = 0;
274	break;
275	}
276
277	reg = snd_soc_read(codec, AD193X_DAC_CTRL2);
278	reg = (reg & (~AD193X_DAC_WORD_LEN_MASK)) \| word_len;
279	snd_soc_write(codec, AD193X_DAC_CTRL2, reg);
280
281	reg = snd_soc_read(codec, AD193X_ADC_CTRL1);
282	reg = (reg & (~AD193X_ADC_WORD_LEN_MASK)) \| word_len;
283	snd_soc_write(codec, AD193X_ADC_CTRL1, reg);
284
285	return 0;
286	}
287
288	int ad193x_bus_probe(struct device dev, void ctrl_data, int bus_type)
289	{
290	struct snd_soc_codec *codec;
291	struct ad193x_priv *ad193x;
292
293	ad193x = kzalloc(sizeof(struct ad193x_priv), GFP_KERNEL);
294	if (ad193x == NULL)
295	return -ENOMEM;
296
297	codec = &ad193x->codec;
298	codec->control_data = ctrl_data;
299	codec->dev = dev;
300
301	dev_set_drvdata(dev, ad193x);
302
303	return ad193x_register(ad193x, bus_type);
304	}
305	EXPORT_SYMBOL_GPL(ad193x_bus_probe);
306
307	int ad193x_bus_remove(struct device *dev)
308	{
309	struct ad193x_priv *ad193x = dev_get_drvdata(dev);
310
311	ad193x_unregister(ad193x);
312	return 0;
313	}
314	EXPORT_SYMBOL_GPL(ad193x_bus_remove);
315
316	static struct snd_soc_dai_ops ad193x_dai_ops = {
317	.hw_params = ad193x_hw_params,
318	.digital_mute = ad193x_mute,
319	.set_tdm_slot = ad193x_set_tdm_slot,
320	.set_fmt = ad193x_set_dai_fmt,
321	};
322
323	/* codec DAI instance */
324	struct snd_soc_dai ad193x_dai = {
325	.name = "AD193X",
326	.playback = {
327	.stream_name = "Playback",
328	.channels_min = 2,
329	.channels_max = 8,
330	.rates = SNDRV_PCM_RATE_48000,
331	.formats = SNDRV_PCM_FMTBIT_S32_LE \| SNDRV_PCM_FMTBIT_S16_LE \|
332	SNDRV_PCM_FMTBIT_S20_3LE \| SNDRV_PCM_FMTBIT_S24_LE,
333	},
334	.capture = {
335	.stream_name = "Capture",
336	.channels_min = 2,
337	.channels_max = 4,
338	.rates = SNDRV_PCM_RATE_48000,
339	.formats = SNDRV_PCM_FMTBIT_S32_LE \| SNDRV_PCM_FMTBIT_S16_LE \|
340	SNDRV_PCM_FMTBIT_S20_3LE \| SNDRV_PCM_FMTBIT_S24_LE,
341	},
342	.ops = &ad193x_dai_ops,
343	};
344	EXPORT_SYMBOL_GPL(ad193x_dai);
345
346	static int ad193x_register(struct ad193x_priv *ad193x, int bus_type)
347	{
348	int ret;
349	struct snd_soc_codec *codec = &ad193x->codec;
350
351	if (ad193x_codec) {
352	dev_err(codec->dev, "Another ad193x is registered\n");
353	return -EINVAL;
354	}
355
356	mutex_init(&codec->mutex);
357	codec->private_data = ad193x;
358	codec->reg_cache = ad193x->reg_cache;
359	codec->reg_cache_size = AD193X_NUM_REGS;
360	codec->name = "AD193X";
361	codec->owner = THIS_MODULE;
362	codec->dai = &ad193x_dai;
363	codec->num_dai = 1;
364	INIT_LIST_HEAD(&codec->dapm_widgets);
365	INIT_LIST_HEAD(&codec->dapm_paths);
366
367	ad193x_dai.dev = codec->dev;
368	ad193x_codec = codec;
369
370	memcpy(codec->reg_cache, ad193x_reg, AD193X_NUM_REGS);
371
372	if (bus_type == SND_SOC_I2C)
373	ret = snd_soc_codec_set_cache_io(codec, 8, 8, bus_type);
374	else
375	ret = snd_soc_codec_set_cache_io(codec, 16, 8, bus_type);
376	if (ret < 0) {
377	dev_err(codec->dev, "failed to set cache I/O: %d\n",
378	ret);
379	kfree(ad193x);
380	return ret;
381	}
382
383	/* default setting for ad193x */
384
385	/* unmute dac channels */
386	snd_soc_write(codec, AD193X_DAC_CHNL_MUTE, 0x0);
387	/* de-emphasis: 48kHz, powedown dac */
388	snd_soc_write(codec, AD193X_DAC_CTRL2, 0x1A);
389	/* powerdown dac, dac in tdm mode */
390	snd_soc_write(codec, AD193X_DAC_CTRL0, 0x41);
391	/* high-pass filter enable */
392	snd_soc_write(codec, AD193X_ADC_CTRL0, 0x3);
393	/* sata delay=1, adc aux mode */
394	snd_soc_write(codec, AD193X_ADC_CTRL1, 0x43);
395	/* pll input: mclki/xi */
396	snd_soc_write(codec, AD193X_PLL_CLK_CTRL0, 0x99); /* mclk=24.576Mhz: 0x9D; mclk=12.288Mhz: 0x99 */
397	snd_soc_write(codec, AD193X_PLL_CLK_CTRL1, 0x04);
398
399	ret = snd_soc_register_codec(codec);
400	if (ret != 0) {
401	dev_err(codec->dev, "Failed to register codec: %d\n", ret);
402	kfree(ad193x);
403	return ret;
404	}
405
406	ret = snd_soc_register_dai(&ad193x_dai);
407	if (ret != 0) {
408	dev_err(codec->dev, "Failed to register DAI: %d\n", ret);
409	snd_soc_unregister_codec(codec);
410	kfree(ad193x);
411	return ret;
412	}
413
414	return 0;
415	}
416
417	static void ad193x_unregister(struct ad193x_priv *ad193x)
418	{
419	snd_soc_unregister_dai(&ad193x_dai);
420	snd_soc_unregister_codec(&ad193x->codec);
421	kfree(ad193x);
422	ad193x_codec = NULL;
423	}
424
425	static int ad193x_probe(struct platform_device *pdev)
426	{
427	struct snd_soc_device *socdev = platform_get_drvdata(pdev);
428	struct snd_soc_codec *codec;
429	int ret = 0;
430
431	if (ad193x_codec == NULL) {
432	dev_err(&pdev->dev, "Codec device not registered\n");
433	return -ENODEV;
434	}
435
436	socdev->card->codec = ad193x_codec;
437	codec = ad193x_codec;
438
439	/* register pcms */
440	ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1);
441	if (ret < 0) {
442	dev_err(codec->dev, "failed to create pcms: %d\n", ret);
443	goto pcm_err;
444	}
445
446	snd_soc_add_controls(codec, ad193x_snd_controls,
447	ARRAY_SIZE(ad193x_snd_controls));
448	snd_soc_dapm_new_controls(codec, ad193x_dapm_widgets,
449	ARRAY_SIZE(ad193x_dapm_widgets));
450	snd_soc_dapm_add_routes(codec, audio_paths, ARRAY_SIZE(audio_paths));
451
452	pcm_err:
453	return ret;
454	}
455
456	/* power down chip */
457	static int ad193x_remove(struct platform_device *pdev)
458	{
459	struct snd_soc_device *socdev = platform_get_drvdata(pdev);
460
461	snd_soc_free_pcms(socdev);
462	snd_soc_dapm_free(socdev);
463
464	return 0;
465	}
466
467	struct snd_soc_codec_device soc_codec_dev_ad193x = {
468	.probe = ad193x_probe,
469	.remove = ad193x_remove,
470	};
471	EXPORT_SYMBOL_GPL(soc_codec_dev_ad193x);
472
473	#if defined(CONFIG_SPI_MASTER)
474	static int __devinit ad193x_spi_probe(struct spi_device *spi)
475	{
476	return ad193x_bus_probe(&spi->dev, spi, SND_SOC_SPI);
477	}
478
479	static int __devexit ad193x_spi_remove(struct spi_device *spi)
480	{
481	return ad193x_bus_remove(&spi->dev);
482	}
483
484	static struct spi_driver ad193x_spi_driver = {
485	.driver = {
486	.name = "ad193x",
487	.owner = THIS_MODULE,
488	},
489	.probe = ad193x_spi_probe,
490	.remove = __devexit_p(ad193x_spi_remove),
491	};
492	#endif
493
494	#if defined(CONFIG_I2C) \|\| defined(CONFIG_I2C_MODULE)
495	static const struct i2c_device_id ad193x_id[] = {
496	{ "ad1936", 0 },
497	{ "ad1937", 0 },
498	{ }
499	};
500	MODULE_DEVICE_TABLE(i2c, ad193x_id);
501
502	static int __devinit ad193x_i2c_probe(struct i2c_client *client,
503	const struct i2c_device_id *id)
504	{
505	return ad193x_bus_probe(&client->dev, client, SND_SOC_I2C);
506	}
507
508	static int __devexit ad193x_i2c_remove(struct i2c_client *client)
509	{
510	return ad193x_bus_remove(&client->dev);
511	}
512
513	static struct i2c_driver ad193x_i2c_driver = {
514	.driver = {
515	.name = "ad193x",
516	},
517	.probe = ad193x_i2c_probe,
518	.remove = __devexit_p(ad193x_i2c_remove),
519	.id_table = ad193x_id,
520	};
521	#endif
522
523	static int __init ad193x_modinit(void)
524	{
525	int ret;
526
527	#if defined(CONFIG_I2C) \|\| defined(CONFIG_I2C_MODULE)
528	ret = i2c_add_driver(&ad193x_i2c_driver);
529	if (ret != 0) {
530	printk(KERN_ERR "Failed to register AD193X I2C driver: %d\n",
531	ret);
532	}
533	#endif
534
535	#if defined(CONFIG_SPI_MASTER)
536	ret = spi_register_driver(&ad193x_spi_driver);
537	if (ret != 0) {
538	printk(KERN_ERR "Failed to register AD193X SPI driver: %d\n",
539	ret);
540	}
541	#endif
542	return ret;
543	}
544	module_init(ad193x_modinit);
545
546	static void __exit ad193x_modexit(void)
547	{
548	#if defined(CONFIG_SPI_MASTER)
549	spi_unregister_driver(&ad193x_spi_driver);
550	#endif
551
552	#if defined(CONFIG_I2C) \|\| defined(CONFIG_I2C_MODULE)
553	i2c_del_driver(&ad193x_i2c_driver);
554	#endif
555	}
556	module_exit(ad193x_modexit);
557
558	MODULE_DESCRIPTION("ASoC ad193x driver");
559	MODULE_AUTHOR("Barry Song <21cnbao@gmail.com>");
560	MODULE_LICENSE("GPL");