[deliverable/linux.git] / sound / soc / codecs / ad1836.c

 /*
 * Audio Codec driver supporting:
 *  AD1835A, AD1836, AD1837A, AD1838A, AD1839A
 *
 * Copyright 2009-2011 Analog Devices Inc.
 *
 * Licensed under the GPL-2 or later.
 */

#include <linux/init.h>
#include <linux/slab.h>
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/device.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 <linux/spi/spi.h>
#include "ad1836.h"

enum ad1836_type {
	AD1835,
	AD1836,
	AD1838,
};

/* codec private data */
struct ad1836_priv {
	enum ad1836_type type;
};

/*
 * AD1836 volume/mute/de-emphasis etc. controls
 */
static const char *ad1836_deemp[] = {"None", "44.1kHz", "32kHz", "48kHz"};

static const struct soc_enum ad1836_deemp_enum =
	SOC_ENUM_SINGLE(AD1836_DAC_CTRL1, 8, 4, ad1836_deemp);

#define AD1836_DAC_VOLUME(x) \
	SOC_DOUBLE_R("DAC" #x " Playback Volume", AD1836_DAC_L_VOL(x), \
			AD1836_DAC_R_VOL(x), 0, 0x3FF, 0)

#define AD1836_DAC_SWITCH(x) \
	SOC_DOUBLE("DAC" #x " Playback Switch", AD1836_DAC_CTRL2, \
			AD1836_MUTE_LEFT(x), AD1836_MUTE_RIGHT(x), 1, 1)

#define AD1836_ADC_SWITCH(x) \
	SOC_DOUBLE("ADC" #x " Capture Switch", AD1836_ADC_CTRL2, \
		AD1836_MUTE_LEFT(x), AD1836_MUTE_RIGHT(x), 1, 1)

static const struct snd_kcontrol_new ad183x_dac_controls[] = {
	AD1836_DAC_VOLUME(1),
	AD1836_DAC_SWITCH(1),
	AD1836_DAC_VOLUME(2),
	AD1836_DAC_SWITCH(2),
	AD1836_DAC_VOLUME(3),
	AD1836_DAC_SWITCH(3),
	AD1836_DAC_VOLUME(4),
	AD1836_DAC_SWITCH(4),
};

static const struct snd_soc_dapm_widget ad183x_dac_dapm_widgets[] = {
	SND_SOC_DAPM_OUTPUT("DAC1OUT"),
	SND_SOC_DAPM_OUTPUT("DAC2OUT"),
	SND_SOC_DAPM_OUTPUT("DAC3OUT"),
	SND_SOC_DAPM_OUTPUT("DAC4OUT"),
};

static const struct snd_soc_dapm_route ad183x_dac_routes[] = {
	{ "DAC1OUT", NULL, "DAC" },
	{ "DAC2OUT", NULL, "DAC" },
	{ "DAC3OUT", NULL, "DAC" },
	{ "DAC4OUT", NULL, "DAC" },
};

static const struct snd_kcontrol_new ad183x_adc_controls[] = {
	AD1836_ADC_SWITCH(1),
	AD1836_ADC_SWITCH(2),
	AD1836_ADC_SWITCH(3),
};

static const struct snd_soc_dapm_widget ad183x_adc_dapm_widgets[] = {
	SND_SOC_DAPM_INPUT("ADC1IN"),
	SND_SOC_DAPM_INPUT("ADC2IN"),
};

static const struct snd_soc_dapm_route ad183x_adc_routes[] = {
	{ "ADC", NULL, "ADC1IN" },
	{ "ADC", NULL, "ADC2IN" },
};

static const struct snd_kcontrol_new ad183x_controls[] = {
	/* ADC high-pass filter */
	SOC_SINGLE("ADC High Pass Filter Switch", AD1836_ADC_CTRL1,
			AD1836_ADC_HIGHPASS_FILTER, 1, 0),

	/* DAC de-emphasis */
	SOC_ENUM("Playback Deemphasis", ad1836_deemp_enum),
};

static const struct snd_soc_dapm_widget ad183x_dapm_widgets[] = {
	SND_SOC_DAPM_DAC("DAC", "Playback", AD1836_DAC_CTRL1,
				AD1836_DAC_POWERDOWN, 1),
	SND_SOC_DAPM_ADC("ADC", "Capture", SND_SOC_NOPM, 0, 0),
	SND_SOC_DAPM_SUPPLY("ADC_PWR", AD1836_ADC_CTRL1,
				AD1836_ADC_POWERDOWN, 1, NULL, 0),
};

static const struct snd_soc_dapm_route ad183x_dapm_routes[] = {
	{ "DAC", NULL, "ADC_PWR" },
	{ "ADC", NULL, "ADC_PWR" },
};

static const DECLARE_TLV_DB_SCALE(ad1836_in_tlv, 0, 300, 0);

static const struct snd_kcontrol_new ad1836_controls[] = {
	SOC_DOUBLE_TLV("ADC2 Capture Volume", AD1836_ADC_CTRL1, 3, 0, 4, 0,
	    ad1836_in_tlv),
};

/*
 * DAI ops entries
 */

static int ad1836_set_dai_fmt(struct snd_soc_dai *codec_dai,
		unsigned int fmt)
{
	switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
	/* at present, we support adc aux mode to interface with
	 * blackfin sport tdm mode
	 */
	case SND_SOC_DAIFMT_DSP_A:
		break;
	default:
		return -EINVAL;
	}

	switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
	case SND_SOC_DAIFMT_IB_IF:
		break;
	default:
		return -EINVAL;
	}

	switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
	/* ALCLK,ABCLK are both output, AD1836 can only be master */
	case SND_SOC_DAIFMT_CBM_CFM:
		break;
	default:
		return -EINVAL;
	}

	return 0;
}

static int ad1836_hw_params(struct snd_pcm_substream *substream,
		struct snd_pcm_hw_params *params,
		struct snd_soc_dai *dai)
{
	int word_len = 0;

	struct snd_soc_pcm_runtime *rtd = substream->private_data;
	struct snd_soc_codec *codec = rtd->codec;

	/* bit size */
	switch (params_format(params)) {
	case SNDRV_PCM_FORMAT_S16_LE:
		word_len = AD1836_WORD_LEN_16;
		break;
	case SNDRV_PCM_FORMAT_S20_3LE:
		word_len = AD1836_WORD_LEN_20;
		break;
	case SNDRV_PCM_FORMAT_S24_LE:
	case SNDRV_PCM_FORMAT_S32_LE:
		word_len = AD1836_WORD_LEN_24;
		break;
	}

	snd_soc_update_bits(codec, AD1836_DAC_CTRL1, AD1836_DAC_WORD_LEN_MASK,
		word_len << AD1836_DAC_WORD_LEN_OFFSET);

	snd_soc_update_bits(codec, AD1836_ADC_CTRL2, AD1836_ADC_WORD_LEN_MASK,
		word_len << AD1836_ADC_WORD_OFFSET);

	return 0;
}

static const struct snd_soc_dai_ops ad1836_dai_ops = {
	.hw_params = ad1836_hw_params,
	.set_fmt = ad1836_set_dai_fmt,
};

#define AD183X_DAI(_name, num_dacs, num_adcs) \
{ \
	.name = _name "-hifi", \
	.playback = { \
		.stream_name = "Playback", \
		.channels_min = 2, \
		.channels_max = (num_dacs) * 2, \
		.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 = (num_adcs) * 2, \
		.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 = &ad1836_dai_ops, \
}

static struct snd_soc_dai_driver ad183x_dais[] = {
	[AD1835] = AD183X_DAI("ad1835", 4, 1),
	[AD1836] = AD183X_DAI("ad1836", 3, 2),
	[AD1838] = AD183X_DAI("ad1838", 3, 1),
};

#ifdef CONFIG_PM
static int ad1836_suspend(struct snd_soc_codec *codec)
{
	/* reset clock control mode */
	return snd_soc_update_bits(codec, AD1836_ADC_CTRL2,
		AD1836_ADC_SERFMT_MASK, 0);
}

static int ad1836_resume(struct snd_soc_codec *codec)
{
	/* restore clock control mode */
	return snd_soc_update_bits(codec, AD1836_ADC_CTRL2,
		AD1836_ADC_SERFMT_MASK, AD1836_ADC_AUX);
}
#else
#define ad1836_suspend NULL
#define ad1836_resume  NULL
#endif

static int ad1836_probe(struct snd_soc_codec *codec)
{
	struct ad1836_priv *ad1836 = snd_soc_codec_get_drvdata(codec);
	struct snd_soc_dapm_context *dapm = &codec->dapm;
	int num_dacs, num_adcs;
	int ret = 0;
	int i;

	num_dacs = ad183x_dais[ad1836->type].playback.channels_max / 2;
	num_adcs = ad183x_dais[ad1836->type].capture.channels_max / 2;

	ret = snd_soc_codec_set_cache_io(codec, 4, 12, SND_SOC_SPI);
	if (ret < 0) {
		dev_err(codec->dev, "failed to set cache I/O: %d\n",
				ret);
		return ret;
	}

	/* default setting for ad1836 */
	/* de-emphasis: 48kHz, power-on dac */
	snd_soc_write(codec, AD1836_DAC_CTRL1, 0x300);
	/* unmute dac channels */
	snd_soc_write(codec, AD1836_DAC_CTRL2, 0x0);
	/* high-pass filter enable, power-on adc */
	snd_soc_write(codec, AD1836_ADC_CTRL1, 0x100);
	/* unmute adc channles, adc aux mode */
	snd_soc_write(codec, AD1836_ADC_CTRL2, 0x180);
	/* volume */
	for (i = 1; i <= num_dacs; ++i) {
		snd_soc_write(codec, AD1836_DAC_L_VOL(i), 0x3FF);
		snd_soc_write(codec, AD1836_DAC_R_VOL(i), 0x3FF);
	}

	if (ad1836->type == AD1836) {
		/* left/right diff:PGA/MUX */
		snd_soc_write(codec, AD1836_ADC_CTRL3, 0x3A);
		ret = snd_soc_add_codec_controls(codec, ad1836_controls,
				ARRAY_SIZE(ad1836_controls));
		if (ret)
			return ret;
	} else {
		snd_soc_write(codec, AD1836_ADC_CTRL3, 0x00);
	}

	ret = snd_soc_add_codec_controls(codec, ad183x_dac_controls, num_dacs * 2);
	if (ret)
		return ret;

	ret = snd_soc_add_codec_controls(codec, ad183x_adc_controls, num_adcs);
	if (ret)
		return ret;

	ret = snd_soc_dapm_new_controls(dapm, ad183x_dac_dapm_widgets, num_dacs);
	if (ret)
		return ret;

	ret = snd_soc_dapm_new_controls(dapm, ad183x_adc_dapm_widgets, num_adcs);
	if (ret)
		return ret;

	ret = snd_soc_dapm_add_routes(dapm, ad183x_dac_routes, num_dacs);
	if (ret)
		return ret;

	ret = snd_soc_dapm_add_routes(dapm, ad183x_adc_routes, num_adcs);
	if (ret)
		return ret;

	return ret;
}

/* power down chip */
static int ad1836_remove(struct snd_soc_codec *codec)
{
	/* reset clock control mode */
	return snd_soc_update_bits(codec, AD1836_ADC_CTRL2,
		AD1836_ADC_SERFMT_MASK, 0);
}

static struct snd_soc_codec_driver soc_codec_dev_ad1836 = {
	.probe = ad1836_probe,
	.remove = ad1836_remove,
	.suspend = ad1836_suspend,
	.resume = ad1836_resume,
	.reg_cache_size = AD1836_NUM_REGS,
	.reg_word_size = sizeof(u16),

	.controls = ad183x_controls,
	.num_controls = ARRAY_SIZE(ad183x_controls),
	.dapm_widgets = ad183x_dapm_widgets,
	.num_dapm_widgets = ARRAY_SIZE(ad183x_dapm_widgets),
	.dapm_routes = ad183x_dapm_routes,
	.num_dapm_routes = ARRAY_SIZE(ad183x_dapm_routes),
};

static int __devinit ad1836_spi_probe(struct spi_device *spi)
{
	struct ad1836_priv *ad1836;
	int ret;

	ad1836 = devm_kzalloc(&spi->dev, sizeof(struct ad1836_priv),
			      GFP_KERNEL);
	if (ad1836 == NULL)
		return -ENOMEM;

	ad1836->type = spi_get_device_id(spi)->driver_data;

	spi_set_drvdata(spi, ad1836);

	ret = snd_soc_register_codec(&spi->dev,
			&soc_codec_dev_ad1836, &ad183x_dais[ad1836->type], 1);
	return ret;
}

static int __devexit ad1836_spi_remove(struct spi_device *spi)
{
	snd_soc_unregister_codec(&spi->dev);
	return 0;
}

static const struct spi_device_id ad1836_ids[] = {
	{ "ad1835", AD1835 },
	{ "ad1836", AD1836 },
	{ "ad1837", AD1835 },
	{ "ad1838", AD1838 },
	{ "ad1839", AD1838 },
	{ },
};
MODULE_DEVICE_TABLE(spi, ad1836_ids);

static struct spi_driver ad1836_spi_driver = {
	.driver = {
		.name	= "ad1836",
		.owner	= THIS_MODULE,
	},
	.probe		= ad1836_spi_probe,
	.remove		= __devexit_p(ad1836_spi_remove),
	.id_table	= ad1836_ids,
};

static int __init ad1836_init(void)
{
	return spi_register_driver(&ad1836_spi_driver);
}
module_init(ad1836_init);

static void __exit ad1836_exit(void)
{
	spi_unregister_driver(&ad1836_spi_driver);
}
module_exit(ad1836_exit);

MODULE_DESCRIPTION("ASoC ad1836 driver");
MODULE_AUTHOR("Barry Song <21cnbao@gmail.com>");
MODULE_LICENSE("GPL");
Commit	Line	Data
42f32c55 MF	1	/*
	2	* Audio Codec driver supporting:
	3	* AD1835A, AD1836, AD1837A, AD1838A, AD1839A
7eaae41e	4	*
42f32c55	5	* Copyright 2009-2011 Analog Devices Inc.
7eaae41e	6	*
42f32c55	7	* Licensed under the GPL-2 or later.
7eaae41e BS	8	*/
	9
	10	#include <linux/init.h>
5a0e3ad6	11	#include <linux/slab.h>
7eaae41e	12	#include <linux/module.h>
7eaae41e BS	13	#include <linux/kernel.h>
	14	#include <linux/device.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>
7eaae41e BS	21	#include <linux/spi/spi.h>
	22	#include "ad1836.h"
	23
874ce77b LPC	24	enum ad1836_type {
	25	AD1835,
	26	AD1836,
	27	AD1838,
	28	};
	29
7eaae41e BS	30	/* codec private data */
7eaae41e BS	31	struct ad1836_priv {
874ce77b	32	enum ad1836_type type;
7eaae41e BS	33	};
7eaae41e BS	34
7eaae41e BS	35	/*
	36	* AD1836 volume/mute/de-emphasis etc. controls
	37	*/
	38	static const char *ad1836_deemp[] = {"None", "44.1kHz", "32kHz", "48kHz"};
	39
	40	static const struct soc_enum ad1836_deemp_enum =
	41	SOC_ENUM_SINGLE(AD1836_DAC_CTRL1, 8, 4, ad1836_deemp);
	42
90bc11d1 LPC	43	#define AD1836_DAC_VOLUME(x) \
	44	SOC_DOUBLE_R("DAC" #x " Playback Volume", AD1836_DAC_L_VOL(x), \
	45	AD1836_DAC_R_VOL(x), 0, 0x3FF, 0)
	46
	47	#define AD1836_DAC_SWITCH(x) \
	48	SOC_DOUBLE("DAC" #x " Playback Switch", AD1836_DAC_CTRL2, \
	49	AD1836_MUTE_LEFT(x), AD1836_MUTE_RIGHT(x), 1, 1)
	50
	51	#define AD1836_ADC_SWITCH(x) \
	52	SOC_DOUBLE("ADC" #x " Capture Switch", AD1836_ADC_CTRL2, \
	53	AD1836_MUTE_LEFT(x), AD1836_MUTE_RIGHT(x), 1, 1)
	54
874ce77b	55	static const struct snd_kcontrol_new ad183x_dac_controls[] = {
90bc11d1	56	AD1836_DAC_VOLUME(1),
874ce77b	57	AD1836_DAC_SWITCH(1),
90bc11d1	58	AD1836_DAC_VOLUME(2),
874ce77b	59	AD1836_DAC_SWITCH(2),
90bc11d1	60	AD1836_DAC_VOLUME(3),
874ce77b LPC	61	AD1836_DAC_SWITCH(3),
	62	AD1836_DAC_VOLUME(4),
	63	AD1836_DAC_SWITCH(4),
	64	};
	65
	66	static const struct snd_soc_dapm_widget ad183x_dac_dapm_widgets[] = {
	67	SND_SOC_DAPM_OUTPUT("DAC1OUT"),
	68	SND_SOC_DAPM_OUTPUT("DAC2OUT"),
	69	SND_SOC_DAPM_OUTPUT("DAC3OUT"),
	70	SND_SOC_DAPM_OUTPUT("DAC4OUT"),
	71	};
	72
	73	static const struct snd_soc_dapm_route ad183x_dac_routes[] = {
	74	{ "DAC1OUT", NULL, "DAC" },
	75	{ "DAC2OUT", NULL, "DAC" },
	76	{ "DAC3OUT", NULL, "DAC" },
	77	{ "DAC4OUT", NULL, "DAC" },
	78	};
7eaae41e	79
874ce77b	80	static const struct snd_kcontrol_new ad183x_adc_controls[] = {
90bc11d1 LPC	81	AD1836_ADC_SWITCH(1),
90bc11d1 LPC	82	AD1836_ADC_SWITCH(2),
874ce77b LPC	83	AD1836_ADC_SWITCH(3),
874ce77b LPC	84	};
7eaae41e	85
874ce77b LPC	86	static const struct snd_soc_dapm_widget ad183x_adc_dapm_widgets[] = {
	87	SND_SOC_DAPM_INPUT("ADC1IN"),
	88	SND_SOC_DAPM_INPUT("ADC2IN"),
	89	};
	90
	91	static const struct snd_soc_dapm_route ad183x_adc_routes[] = {
	92	{ "ADC", NULL, "ADC1IN" },
	93	{ "ADC", NULL, "ADC2IN" },
	94	};
7eaae41e	95
874ce77b	96	static const struct snd_kcontrol_new ad183x_controls[] = {
7eaae41e BS	97	/* ADC high-pass filter */
	98	SOC_SINGLE("ADC High Pass Filter Switch", AD1836_ADC_CTRL1,
	99	AD1836_ADC_HIGHPASS_FILTER, 1, 0),
	100
	101	/* DAC de-emphasis */
	102	SOC_ENUM("Playback Deemphasis", ad1836_deemp_enum),
	103	};
	104
874ce77b	105	static const struct snd_soc_dapm_widget ad183x_dapm_widgets[] = {
7eaae41e BS	106	SND_SOC_DAPM_DAC("DAC", "Playback", AD1836_DAC_CTRL1,
	107	AD1836_DAC_POWERDOWN, 1),
	108	SND_SOC_DAPM_ADC("ADC", "Capture", SND_SOC_NOPM, 0, 0),
	109	SND_SOC_DAPM_SUPPLY("ADC_PWR", AD1836_ADC_CTRL1,
	110	AD1836_ADC_POWERDOWN, 1, NULL, 0),
7eaae41e BS	111	};
7eaae41e BS	112
874ce77b	113	static const struct snd_soc_dapm_route ad183x_dapm_routes[] = {
7eaae41e BS	114	{ "DAC", NULL, "ADC_PWR" },
7eaae41e BS	115	{ "ADC", NULL, "ADC_PWR" },
7eaae41e BS	116	};
7eaae41e BS	117
f97d0c6d LPC	118	static const DECLARE_TLV_DB_SCALE(ad1836_in_tlv, 0, 300, 0);
	119
	120	static const struct snd_kcontrol_new ad1836_controls[] = {
0c8e2917	121	SOC_DOUBLE_TLV("ADC2 Capture Volume", AD1836_ADC_CTRL1, 3, 0, 4, 0,
f97d0c6d LPC	122	ad1836_in_tlv),
	123	};
	124
7eaae41e BS	125	/*
	126	* DAI ops entries
	127	*/
	128
	129	static int ad1836_set_dai_fmt(struct snd_soc_dai *codec_dai,
	130	unsigned int fmt)
	131	{
	132	switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
	133	/* at present, we support adc aux mode to interface with
	134	* blackfin sport tdm mode
	135	*/
	136	case SND_SOC_DAIFMT_DSP_A:
	137	break;
	138	default:
	139	return -EINVAL;
	140	}
	141
	142	switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
	143	case SND_SOC_DAIFMT_IB_IF:
	144	break;
	145	default:
	146	return -EINVAL;
	147	}
	148
	149	switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
	150	/* ALCLK,ABCLK are both output, AD1836 can only be master */
	151	case SND_SOC_DAIFMT_CBM_CFM:
	152	break;
	153	default:
	154	return -EINVAL;
	155	}
	156
	157	return 0;
	158	}
	159
	160	static int ad1836_hw_params(struct snd_pcm_substream *substream,
	161	struct snd_pcm_hw_params *params,
	162	struct snd_soc_dai *dai)
	163	{
	164	int word_len = 0;
	165
	166	struct snd_soc_pcm_runtime *rtd = substream->private_data;
f0fba2ad	167	struct snd_soc_codec *codec = rtd->codec;
7eaae41e BS	168
	169	/* bit size */
	170	switch (params_format(params)) {
	171	case SNDRV_PCM_FORMAT_S16_LE:
8ca695f2	172	word_len = AD1836_WORD_LEN_16;
7eaae41e BS	173	break;
7eaae41e BS	174	case SNDRV_PCM_FORMAT_S20_3LE:
8ca695f2	175	word_len = AD1836_WORD_LEN_20;
7eaae41e BS	176	break;
	177	case SNDRV_PCM_FORMAT_S24_LE:
	178	case SNDRV_PCM_FORMAT_S32_LE:
8ca695f2	179	word_len = AD1836_WORD_LEN_24;
7eaae41e BS	180	break;
	181	}
	182
8ca695f2 LPC	183	snd_soc_update_bits(codec, AD1836_DAC_CTRL1, AD1836_DAC_WORD_LEN_MASK,
8ca695f2 LPC	184	word_len << AD1836_DAC_WORD_LEN_OFFSET);
7eaae41e	185
8ca695f2 LPC	186	snd_soc_update_bits(codec, AD1836_ADC_CTRL2, AD1836_ADC_WORD_LEN_MASK,
8ca695f2 LPC	187	word_len << AD1836_ADC_WORD_OFFSET);
7eaae41e BS	188
	189	return 0;
	190	}
	191
85e7652d	192	static const struct snd_soc_dai_ops ad1836_dai_ops = {
7eaae41e BS	193	.hw_params = ad1836_hw_params,
	194	.set_fmt = ad1836_set_dai_fmt,
	195	};
	196
874ce77b LPC	197	#define AD183X_DAI(_name, num_dacs, num_adcs) \
	198	{ \
	199	.name = _name "-hifi", \
	200	.playback = { \
	201	.stream_name = "Playback", \
	202	.channels_min = 2, \
	203	.channels_max = (num_dacs) * 2, \
	204	.rates = SNDRV_PCM_RATE_48000, \
	205	.formats = SNDRV_PCM_FMTBIT_S32_LE \| SNDRV_PCM_FMTBIT_S16_LE \| \
	206	SNDRV_PCM_FMTBIT_S20_3LE \| SNDRV_PCM_FMTBIT_S24_LE, \
	207	}, \
	208	.capture = { \
	209	.stream_name = "Capture", \
	210	.channels_min = 2, \
	211	.channels_max = (num_adcs) * 2, \
	212	.rates = SNDRV_PCM_RATE_48000, \
	213	.formats = SNDRV_PCM_FMTBIT_S32_LE \| SNDRV_PCM_FMTBIT_S16_LE \| \
	214	SNDRV_PCM_FMTBIT_S20_3LE \| SNDRV_PCM_FMTBIT_S24_LE, \
	215	}, \
	216	.ops = &ad1836_dai_ops, \
	217	}
	218
	219	static struct snd_soc_dai_driver ad183x_dais[] = {
	220	[AD1835] = AD183X_DAI("ad1835", 4, 1),
	221	[AD1836] = AD183X_DAI("ad1836", 3, 2),
	222	[AD1838] = AD183X_DAI("ad1838", 3, 1),
7eaae41e	223	};
7eaae41e	224
5d0e7f61	225	#ifdef CONFIG_PM
84b315ee	226	static int ad1836_suspend(struct snd_soc_codec *codec)
5d0e7f61 BS	227	{
	228	/* reset clock control mode */
	229	return snd_soc_update_bits(codec, AD1836_ADC_CTRL2,
	230	AD1836_ADC_SERFMT_MASK, 0);
	231	}
	232
	233	static int ad1836_resume(struct snd_soc_codec *codec)
	234	{
	235	/* restore clock control mode */
	236	return snd_soc_update_bits(codec, AD1836_ADC_CTRL2,
	237	AD1836_ADC_SERFMT_MASK, AD1836_ADC_AUX);
	238	}
	239	#else
	240	#define ad1836_suspend NULL
	241	#define ad1836_resume NULL
	242	#endif
	243
f0fba2ad	244	static int ad1836_probe(struct snd_soc_codec *codec)
7eaae41e	245	{
f0fba2ad	246	struct ad1836_priv *ad1836 = snd_soc_codec_get_drvdata(codec);
ce6120cc	247	struct snd_soc_dapm_context *dapm = &codec->dapm;
874ce77b	248	int num_dacs, num_adcs;
f0fba2ad	249	int ret = 0;
874ce77b LPC	250	int i;
	251
	252	num_dacs = ad183x_dais[ad1836->type].playback.channels_max / 2;
	253	num_adcs = ad183x_dais[ad1836->type].capture.channels_max / 2;
7eaae41e	254
63b62ab0 BS	255	ret = snd_soc_codec_set_cache_io(codec, 4, 12, SND_SOC_SPI);
	256	if (ret < 0) {
	257	dev_err(codec->dev, "failed to set cache I/O: %d\n",
	258	ret);
63b62ab0 BS	259	return ret;
	260	}
	261
7eaae41e BS	262	/* default setting for ad1836 */
7eaae41e BS	263	/* de-emphasis: 48kHz, power-on dac */
63b62ab0	264	snd_soc_write(codec, AD1836_DAC_CTRL1, 0x300);
7eaae41e	265	/* unmute dac channels */
63b62ab0	266	snd_soc_write(codec, AD1836_DAC_CTRL2, 0x0);
7eaae41e	267	/* high-pass filter enable, power-on adc */
63b62ab0	268	snd_soc_write(codec, AD1836_ADC_CTRL1, 0x100);
7eaae41e	269	/* unmute adc channles, adc aux mode */
63b62ab0	270	snd_soc_write(codec, AD1836_ADC_CTRL2, 0x180);
7eaae41e	271	/* volume */
874ce77b LPC	272	for (i = 1; i <= num_dacs; ++i) {
	273	snd_soc_write(codec, AD1836_DAC_L_VOL(i), 0x3FF);
	274	snd_soc_write(codec, AD1836_DAC_R_VOL(i), 0x3FF);
	275	}
	276
	277	if (ad1836->type == AD1836) {
	278	/* left/right diff:PGA/MUX */
	279	snd_soc_write(codec, AD1836_ADC_CTRL3, 0x3A);
022658be	280	ret = snd_soc_add_codec_controls(codec, ad1836_controls,
f97d0c6d LPC	281	ARRAY_SIZE(ad1836_controls));
	282	if (ret)
	283	return ret;
874ce77b LPC	284	} else {
	285	snd_soc_write(codec, AD1836_ADC_CTRL3, 0x00);
	286	}
	287
022658be	288	ret = snd_soc_add_codec_controls(codec, ad183x_dac_controls, num_dacs * 2);
874ce77b LPC	289	if (ret)
	290	return ret;
	291
022658be	292	ret = snd_soc_add_codec_controls(codec, ad183x_adc_controls, num_adcs);
874ce77b LPC	293	if (ret)
	294	return ret;
	295
	296	ret = snd_soc_dapm_new_controls(dapm, ad183x_dac_dapm_widgets, num_dacs);
	297	if (ret)
	298	return ret;
	299
	300	ret = snd_soc_dapm_new_controls(dapm, ad183x_adc_dapm_widgets, num_adcs);
	301	if (ret)
	302	return ret;
	303
	304	ret = snd_soc_dapm_add_routes(dapm, ad183x_dac_routes, num_dacs);
	305	if (ret)
	306	return ret;
	307
	308	ret = snd_soc_dapm_add_routes(dapm, ad183x_adc_routes, num_adcs);
	309	if (ret)
	310	return ret;
7eaae41e	311
7eaae41e BS	312	return ret;
	313	}
	314
	315	/* power down chip */
f0fba2ad	316	static int ad1836_remove(struct snd_soc_codec *codec)
7eaae41e	317	{
f0fba2ad	318	/* reset clock control mode */
2cf03428 LPC	319	return snd_soc_update_bits(codec, AD1836_ADC_CTRL2,
2cf03428 LPC	320	AD1836_ADC_SERFMT_MASK, 0);
7eaae41e BS	321	}
7eaae41e BS	322
f0fba2ad	323	static struct snd_soc_codec_driver soc_codec_dev_ad1836 = {
d4d80f5e MF	324	.probe = ad1836_probe,
d4d80f5e MF	325	.remove = ad1836_remove,
5d0e7f61 BS	326	.suspend = ad1836_suspend,
5d0e7f61 BS	327	.resume = ad1836_resume,
f0fba2ad LG	328	.reg_cache_size = AD1836_NUM_REGS,
f0fba2ad LG	329	.reg_word_size = sizeof(u16),
874ce77b LPC	330
	331	.controls = ad183x_controls,
	332	.num_controls = ARRAY_SIZE(ad183x_controls),
	333	.dapm_widgets = ad183x_dapm_widgets,
	334	.num_dapm_widgets = ARRAY_SIZE(ad183x_dapm_widgets),
	335	.dapm_routes = ad183x_dapm_routes,
	336	.num_dapm_routes = ARRAY_SIZE(ad183x_dapm_routes),
f0fba2ad LG	337	};
	338
	339	static int __devinit ad1836_spi_probe(struct spi_device *spi)
	340	{
	341	struct ad1836_priv *ad1836;
	342	int ret;
	343
6e4f17cb AL	344	ad1836 = devm_kzalloc(&spi->dev, sizeof(struct ad1836_priv),
6e4f17cb AL	345	GFP_KERNEL);
f0fba2ad LG	346	if (ad1836 == NULL)
	347	return -ENOMEM;
	348
874ce77b LPC	349	ad1836->type = spi_get_device_id(spi)->driver_data;
874ce77b LPC	350
f0fba2ad	351	spi_set_drvdata(spi, ad1836);
f0fba2ad LG	352
f0fba2ad LG	353	ret = snd_soc_register_codec(&spi->dev,
874ce77b	354	&soc_codec_dev_ad1836, &ad183x_dais[ad1836->type], 1);
f0fba2ad LG	355	return ret;
	356	}
	357
	358	static int __devexit ad1836_spi_remove(struct spi_device *spi)
	359	{
	360	snd_soc_unregister_codec(&spi->dev);
f0fba2ad LG	361	return 0;
f0fba2ad LG	362	}
6e4f17cb	363
874ce77b LPC	364	static const struct spi_device_id ad1836_ids[] = {
	365	{ "ad1835", AD1835 },
	366	{ "ad1836", AD1836 },
	367	{ "ad1837", AD1835 },
	368	{ "ad1838", AD1838 },
	369	{ "ad1839", AD1838 },
	370	{ },
	371	};
	372	MODULE_DEVICE_TABLE(spi, ad1836_ids);
f0fba2ad LG	373
	374	static struct spi_driver ad1836_spi_driver = {
	375	.driver = {
0679059a	376	.name = "ad1836",
f0fba2ad LG	377	.owner = THIS_MODULE,
	378	},
	379	.probe = ad1836_spi_probe,
	380	.remove = __devexit_p(ad1836_spi_remove),
874ce77b	381	.id_table = ad1836_ids,
7eaae41e	382	};
7eaae41e BS	383
	384	static int __init ad1836_init(void)
	385	{
15e87051	386	return spi_register_driver(&ad1836_spi_driver);
7eaae41e BS	387	}
	388	module_init(ad1836_init);
	389
	390	static void __exit ad1836_exit(void)
	391	{
	392	spi_unregister_driver(&ad1836_spi_driver);
	393	}
	394	module_exit(ad1836_exit);
	395
	396	MODULE_DESCRIPTION("ASoC ad1836 driver");
	397	MODULE_AUTHOR("Barry Song <21cnbao@gmail.com>");
	398	MODULE_LICENSE("GPL");