[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 <linux/regmap.h>

#include "ad1836.h"

enum ad1836_type {
	AD1835,
	AD1836,
	AD1838,
};

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

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

static SOC_ENUM_SINGLE_DECL(ad1836_deemp_enum,
			    AD1836_DAC_CTRL1, 8, 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)
{
	struct ad1836_priv *ad1836 = snd_soc_codec_get_drvdata(dai->codec);
	int word_len = 0;

	/* bit size */
	switch (params_width(params)) {
	case 16:
		word_len = AD1836_WORD_LEN_16;
		break;
	case 20:
		word_len = AD1836_WORD_LEN_20;
		break;
	case 24:
	case 32:
		word_len = AD1836_WORD_LEN_24;
		break;
	default:
		return -EINVAL;
	}

	regmap_update_bits(ad1836->regmap, AD1836_DAC_CTRL1,
		AD1836_DAC_WORD_LEN_MASK,
		word_len << AD1836_DAC_WORD_LEN_OFFSET);

	regmap_update_bits(ad1836->regmap, 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)
{
	struct ad1836_priv *ad1836 = snd_soc_codec_get_drvdata(codec);
	/* reset clock control mode */
	return regmap_update_bits(ad1836->regmap, AD1836_ADC_CTRL2,
		AD1836_ADC_SERFMT_MASK, 0);
}

static int ad1836_resume(struct snd_soc_codec *codec)
{
	struct ad1836_priv *ad1836 = snd_soc_codec_get_drvdata(codec);
	/* restore clock control mode */
	return regmap_update_bits(ad1836->regmap, 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 = snd_soc_codec_get_dapm(codec);
	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;

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

	if (ad1836->type == AD1836) {
		/* left/right diff:PGA/MUX */
		regmap_write(ad1836->regmap, AD1836_ADC_CTRL3, 0x3A);
		ret = snd_soc_add_codec_controls(codec, ad1836_controls,
				ARRAY_SIZE(ad1836_controls));
		if (ret)
			return ret;
	} else {
		regmap_write(ad1836->regmap, 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)
{
	struct ad1836_priv *ad1836 = snd_soc_codec_get_drvdata(codec);
	/* reset clock control mode */
	return regmap_update_bits(ad1836->regmap, 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,

	.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 const struct reg_default ad1836_reg_defaults[] = {
	{ AD1836_DAC_CTRL1, 0x0000 },
	{ AD1836_DAC_CTRL2, 0x0000 },
	{ AD1836_DAC_L_VOL(0), 0x0000 },
	{ AD1836_DAC_R_VOL(0), 0x0000 },
	{ AD1836_DAC_L_VOL(1), 0x0000 },
	{ AD1836_DAC_R_VOL(1), 0x0000 },
	{ AD1836_DAC_L_VOL(2), 0x0000 },
	{ AD1836_DAC_R_VOL(2), 0x0000 },
	{ AD1836_DAC_L_VOL(3), 0x0000 },
	{ AD1836_DAC_R_VOL(3), 0x0000 },
	{ AD1836_ADC_CTRL1, 0x0000 },
	{ AD1836_ADC_CTRL2, 0x0000 },
	{ AD1836_ADC_CTRL3, 0x0000 },
};

static const struct regmap_config ad1836_regmap_config = {
	.val_bits = 12,
	.reg_bits = 4,
	.read_flag_mask = 0x08,

	.max_register = AD1836_ADC_CTRL3,
	.reg_defaults = ad1836_reg_defaults,
	.num_reg_defaults = ARRAY_SIZE(ad1836_reg_defaults),
	.cache_type = REGCACHE_RBTREE,
};

static int 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->regmap = devm_regmap_init_spi(spi, &ad1836_regmap_config);
	if (IS_ERR(ad1836->regmap))
		return PTR_ERR(ad1836->regmap);

	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 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		= ad1836_spi_remove,
	.id_table	= ad1836_ids,
};

module_spi_driver(ad1836_spi_driver);

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	21	#include <linux/spi/spi.h>
7f22fd9c LPC	22	#include <linux/regmap.h>
7f22fd9c LPC	23
7eaae41e BS	24	#include "ad1836.h"
7eaae41e BS	25
874ce77b LPC	26	enum ad1836_type {
	27	AD1835,
	28	AD1836,
	29	AD1838,
	30	};
	31
7eaae41e BS	32	/* codec private data */
7eaae41e BS	33	struct ad1836_priv {
874ce77b	34	enum ad1836_type type;
7f22fd9c	35	struct regmap *regmap;
7eaae41e BS	36	};
7eaae41e BS	37
7eaae41e BS	38	/*
	39	* AD1836 volume/mute/de-emphasis etc. controls
	40	*/
	41	static const char *ad1836_deemp[] = {"None", "44.1kHz", "32kHz", "48kHz"};
	42
2e86434f TI	43	static SOC_ENUM_SINGLE_DECL(ad1836_deemp_enum,
2e86434f TI	44	AD1836_DAC_CTRL1, 8, ad1836_deemp);
7eaae41e	45
90bc11d1 LPC	46	#define AD1836_DAC_VOLUME(x) \
	47	SOC_DOUBLE_R("DAC" #x " Playback Volume", AD1836_DAC_L_VOL(x), \
	48	AD1836_DAC_R_VOL(x), 0, 0x3FF, 0)
	49
	50	#define AD1836_DAC_SWITCH(x) \
	51	SOC_DOUBLE("DAC" #x " Playback Switch", AD1836_DAC_CTRL2, \
	52	AD1836_MUTE_LEFT(x), AD1836_MUTE_RIGHT(x), 1, 1)
	53
	54	#define AD1836_ADC_SWITCH(x) \
	55	SOC_DOUBLE("ADC" #x " Capture Switch", AD1836_ADC_CTRL2, \
	56	AD1836_MUTE_LEFT(x), AD1836_MUTE_RIGHT(x), 1, 1)
	57
874ce77b	58	static const struct snd_kcontrol_new ad183x_dac_controls[] = {
90bc11d1	59	AD1836_DAC_VOLUME(1),
874ce77b	60	AD1836_DAC_SWITCH(1),
90bc11d1	61	AD1836_DAC_VOLUME(2),
874ce77b	62	AD1836_DAC_SWITCH(2),
90bc11d1	63	AD1836_DAC_VOLUME(3),
874ce77b LPC	64	AD1836_DAC_SWITCH(3),
	65	AD1836_DAC_VOLUME(4),
	66	AD1836_DAC_SWITCH(4),
	67	};
	68
	69	static const struct snd_soc_dapm_widget ad183x_dac_dapm_widgets[] = {
	70	SND_SOC_DAPM_OUTPUT("DAC1OUT"),
	71	SND_SOC_DAPM_OUTPUT("DAC2OUT"),
	72	SND_SOC_DAPM_OUTPUT("DAC3OUT"),
	73	SND_SOC_DAPM_OUTPUT("DAC4OUT"),
	74	};
	75
	76	static const struct snd_soc_dapm_route ad183x_dac_routes[] = {
	77	{ "DAC1OUT", NULL, "DAC" },
	78	{ "DAC2OUT", NULL, "DAC" },
	79	{ "DAC3OUT", NULL, "DAC" },
	80	{ "DAC4OUT", NULL, "DAC" },
	81	};
7eaae41e	82
874ce77b	83	static const struct snd_kcontrol_new ad183x_adc_controls[] = {
90bc11d1 LPC	84	AD1836_ADC_SWITCH(1),
90bc11d1 LPC	85	AD1836_ADC_SWITCH(2),
874ce77b LPC	86	AD1836_ADC_SWITCH(3),
874ce77b LPC	87	};
7eaae41e	88
874ce77b LPC	89	static const struct snd_soc_dapm_widget ad183x_adc_dapm_widgets[] = {
	90	SND_SOC_DAPM_INPUT("ADC1IN"),
	91	SND_SOC_DAPM_INPUT("ADC2IN"),
	92	};
	93
	94	static const struct snd_soc_dapm_route ad183x_adc_routes[] = {
	95	{ "ADC", NULL, "ADC1IN" },
	96	{ "ADC", NULL, "ADC2IN" },
	97	};
7eaae41e	98
874ce77b	99	static const struct snd_kcontrol_new ad183x_controls[] = {
7eaae41e BS	100	/* ADC high-pass filter */
	101	SOC_SINGLE("ADC High Pass Filter Switch", AD1836_ADC_CTRL1,
	102	AD1836_ADC_HIGHPASS_FILTER, 1, 0),
	103
	104	/* DAC de-emphasis */
	105	SOC_ENUM("Playback Deemphasis", ad1836_deemp_enum),
	106	};
	107
874ce77b	108	static const struct snd_soc_dapm_widget ad183x_dapm_widgets[] = {
7eaae41e BS	109	SND_SOC_DAPM_DAC("DAC", "Playback", AD1836_DAC_CTRL1,
	110	AD1836_DAC_POWERDOWN, 1),
	111	SND_SOC_DAPM_ADC("ADC", "Capture", SND_SOC_NOPM, 0, 0),
	112	SND_SOC_DAPM_SUPPLY("ADC_PWR", AD1836_ADC_CTRL1,
	113	AD1836_ADC_POWERDOWN, 1, NULL, 0),
7eaae41e BS	114	};
7eaae41e BS	115
874ce77b	116	static const struct snd_soc_dapm_route ad183x_dapm_routes[] = {
7eaae41e BS	117	{ "DAC", NULL, "ADC_PWR" },
7eaae41e BS	118	{ "ADC", NULL, "ADC_PWR" },
7eaae41e BS	119	};
7eaae41e BS	120
f97d0c6d LPC	121	static const DECLARE_TLV_DB_SCALE(ad1836_in_tlv, 0, 300, 0);
	122
	123	static const struct snd_kcontrol_new ad1836_controls[] = {
0c8e2917	124	SOC_DOUBLE_TLV("ADC2 Capture Volume", AD1836_ADC_CTRL1, 3, 0, 4, 0,
f97d0c6d LPC	125	ad1836_in_tlv),
	126	};
	127
7eaae41e BS	128	/*
	129	* DAI ops entries
	130	*/
	131
	132	static int ad1836_set_dai_fmt(struct snd_soc_dai *codec_dai,
	133	unsigned int fmt)
	134	{
	135	switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
	136	/* at present, we support adc aux mode to interface with
	137	* blackfin sport tdm mode
	138	*/
	139	case SND_SOC_DAIFMT_DSP_A:
	140	break;
	141	default:
	142	return -EINVAL;
	143	}
	144
	145	switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
	146	case SND_SOC_DAIFMT_IB_IF:
	147	break;
	148	default:
	149	return -EINVAL;
	150	}
	151
	152	switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
	153	/* ALCLK,ABCLK are both output, AD1836 can only be master */
	154	case SND_SOC_DAIFMT_CBM_CFM:
	155	break;
	156	default:
	157	return -EINVAL;
	158	}
	159
	160	return 0;
	161	}
	162
	163	static int ad1836_hw_params(struct snd_pcm_substream *substream,
	164	struct snd_pcm_hw_params *params,
	165	struct snd_soc_dai *dai)
	166	{
7f22fd9c	167	struct ad1836_priv *ad1836 = snd_soc_codec_get_drvdata(dai->codec);
7eaae41e	168	int word_len = 0;
7eaae41e BS	169
7eaae41e BS	170	/* bit size */
fa69b0f9 MB	171	switch (params_width(params)) {
fa69b0f9 MB	172	case 16:
8ca695f2	173	word_len = AD1836_WORD_LEN_16;
7eaae41e	174	break;
fa69b0f9	175	case 20:
8ca695f2	176	word_len = AD1836_WORD_LEN_20;
7eaae41e	177	break;
fa69b0f9 MB	178	case 24:
fa69b0f9 MB	179	case 32:
8ca695f2	180	word_len = AD1836_WORD_LEN_24;
7eaae41e	181	break;
c097d5fd MB	182	default:
c097d5fd MB	183	return -EINVAL;
7eaae41e BS	184	}
7eaae41e BS	185
7f22fd9c LPC	186	regmap_update_bits(ad1836->regmap, AD1836_DAC_CTRL1,
7f22fd9c LPC	187	AD1836_DAC_WORD_LEN_MASK,
8ca695f2	188	word_len << AD1836_DAC_WORD_LEN_OFFSET);
7eaae41e	189
7f22fd9c LPC	190	regmap_update_bits(ad1836->regmap, AD1836_ADC_CTRL2,
7f22fd9c LPC	191	AD1836_ADC_WORD_LEN_MASK,
8ca695f2	192	word_len << AD1836_ADC_WORD_OFFSET);
7eaae41e BS	193
	194	return 0;
	195	}
	196
85e7652d	197	static const struct snd_soc_dai_ops ad1836_dai_ops = {
7eaae41e BS	198	.hw_params = ad1836_hw_params,
	199	.set_fmt = ad1836_set_dai_fmt,
	200	};
	201
874ce77b LPC	202	#define AD183X_DAI(_name, num_dacs, num_adcs) \
	203	{ \
	204	.name = _name "-hifi", \
	205	.playback = { \
	206	.stream_name = "Playback", \
	207	.channels_min = 2, \
	208	.channels_max = (num_dacs) * 2, \
	209	.rates = SNDRV_PCM_RATE_48000, \
	210	.formats = SNDRV_PCM_FMTBIT_S32_LE \| SNDRV_PCM_FMTBIT_S16_LE \| \
	211	SNDRV_PCM_FMTBIT_S20_3LE \| SNDRV_PCM_FMTBIT_S24_LE, \
	212	}, \
	213	.capture = { \
	214	.stream_name = "Capture", \
	215	.channels_min = 2, \
	216	.channels_max = (num_adcs) * 2, \
	217	.rates = SNDRV_PCM_RATE_48000, \
	218	.formats = SNDRV_PCM_FMTBIT_S32_LE \| SNDRV_PCM_FMTBIT_S16_LE \| \
	219	SNDRV_PCM_FMTBIT_S20_3LE \| SNDRV_PCM_FMTBIT_S24_LE, \
	220	}, \
	221	.ops = &ad1836_dai_ops, \
	222	}
	223
	224	static struct snd_soc_dai_driver ad183x_dais[] = {
	225	[AD1835] = AD183X_DAI("ad1835", 4, 1),
	226	[AD1836] = AD183X_DAI("ad1836", 3, 2),
	227	[AD1838] = AD183X_DAI("ad1838", 3, 1),
7eaae41e	228	};
7eaae41e	229
5d0e7f61	230	#ifdef CONFIG_PM
84b315ee	231	static int ad1836_suspend(struct snd_soc_codec *codec)
5d0e7f61	232	{
7f22fd9c	233	struct ad1836_priv *ad1836 = snd_soc_codec_get_drvdata(codec);
5d0e7f61	234	/* reset clock control mode */
7f22fd9c	235	return regmap_update_bits(ad1836->regmap, AD1836_ADC_CTRL2,
5d0e7f61 BS	236	AD1836_ADC_SERFMT_MASK, 0);
	237	}
	238
	239	static int ad1836_resume(struct snd_soc_codec *codec)
	240	{
7f22fd9c	241	struct ad1836_priv *ad1836 = snd_soc_codec_get_drvdata(codec);
5d0e7f61	242	/* restore clock control mode */
7f22fd9c	243	return regmap_update_bits(ad1836->regmap, AD1836_ADC_CTRL2,
5d0e7f61 BS	244	AD1836_ADC_SERFMT_MASK, AD1836_ADC_AUX);
	245	}
	246	#else
	247	#define ad1836_suspend NULL
	248	#define ad1836_resume NULL
	249	#endif
	250
f0fba2ad	251	static int ad1836_probe(struct snd_soc_codec *codec)
7eaae41e	252	{
f0fba2ad	253	struct ad1836_priv *ad1836 = snd_soc_codec_get_drvdata(codec);
9953a8f2	254	struct snd_soc_dapm_context *dapm = snd_soc_codec_get_dapm(codec);
874ce77b	255	int num_dacs, num_adcs;
f0fba2ad	256	int ret = 0;
874ce77b LPC	257	int i;
	258
	259	num_dacs = ad183x_dais[ad1836->type].playback.channels_max / 2;
	260	num_adcs = ad183x_dais[ad1836->type].capture.channels_max / 2;
7eaae41e BS	261
	262	/* default setting for ad1836 */
	263	/* de-emphasis: 48kHz, power-on dac */
7f22fd9c	264	regmap_write(ad1836->regmap, AD1836_DAC_CTRL1, 0x300);
7eaae41e	265	/* unmute dac channels */
7f22fd9c	266	regmap_write(ad1836->regmap, AD1836_DAC_CTRL2, 0x0);
7eaae41e	267	/* high-pass filter enable, power-on adc */
7f22fd9c	268	regmap_write(ad1836->regmap, AD1836_ADC_CTRL1, 0x100);
7eaae41e	269	/* unmute adc channles, adc aux mode */
7f22fd9c	270	regmap_write(ad1836->regmap, AD1836_ADC_CTRL2, 0x180);
7eaae41e	271	/* volume */
874ce77b	272	for (i = 1; i <= num_dacs; ++i) {
7f22fd9c LPC	273	regmap_write(ad1836->regmap, AD1836_DAC_L_VOL(i), 0x3FF);
7f22fd9c LPC	274	regmap_write(ad1836->regmap, AD1836_DAC_R_VOL(i), 0x3FF);
874ce77b LPC	275	}
	276
	277	if (ad1836->type == AD1836) {
	278	/* left/right diff:PGA/MUX */
7f22fd9c	279	regmap_write(ad1836->regmap, 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	284	} else {
7f22fd9c	285	regmap_write(ad1836->regmap, AD1836_ADC_CTRL3, 0x00);
874ce77b LPC	286	}
874ce77b LPC	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	{
7f22fd9c	318	struct ad1836_priv *ad1836 = snd_soc_codec_get_drvdata(codec);
f0fba2ad	319	/* reset clock control mode */
7f22fd9c	320	return regmap_update_bits(ad1836->regmap, AD1836_ADC_CTRL2,
2cf03428	321	AD1836_ADC_SERFMT_MASK, 0);
7eaae41e BS	322	}
7eaae41e BS	323
f0fba2ad	324	static struct snd_soc_codec_driver soc_codec_dev_ad1836 = {
d4d80f5e MF	325	.probe = ad1836_probe,
d4d80f5e MF	326	.remove = ad1836_remove,
5d0e7f61 BS	327	.suspend = ad1836_suspend,
5d0e7f61 BS	328	.resume = ad1836_resume,
874ce77b LPC	329
	330	.controls = ad183x_controls,
	331	.num_controls = ARRAY_SIZE(ad183x_controls),
	332	.dapm_widgets = ad183x_dapm_widgets,
	333	.num_dapm_widgets = ARRAY_SIZE(ad183x_dapm_widgets),
	334	.dapm_routes = ad183x_dapm_routes,
	335	.num_dapm_routes = ARRAY_SIZE(ad183x_dapm_routes),
f0fba2ad LG	336	};
f0fba2ad LG	337
7f22fd9c LPC	338	static const struct reg_default ad1836_reg_defaults[] = {
	339	{ AD1836_DAC_CTRL1, 0x0000 },
	340	{ AD1836_DAC_CTRL2, 0x0000 },
	341	{ AD1836_DAC_L_VOL(0), 0x0000 },
	342	{ AD1836_DAC_R_VOL(0), 0x0000 },
	343	{ AD1836_DAC_L_VOL(1), 0x0000 },
	344	{ AD1836_DAC_R_VOL(1), 0x0000 },
	345	{ AD1836_DAC_L_VOL(2), 0x0000 },
	346	{ AD1836_DAC_R_VOL(2), 0x0000 },
	347	{ AD1836_DAC_L_VOL(3), 0x0000 },
	348	{ AD1836_DAC_R_VOL(3), 0x0000 },
	349	{ AD1836_ADC_CTRL1, 0x0000 },
	350	{ AD1836_ADC_CTRL2, 0x0000 },
	351	{ AD1836_ADC_CTRL3, 0x0000 },
	352	};
	353
	354	static const struct regmap_config ad1836_regmap_config = {
	355	.val_bits = 12,
	356	.reg_bits = 4,
	357	.read_flag_mask = 0x08,
	358
	359	.max_register = AD1836_ADC_CTRL3,
	360	.reg_defaults = ad1836_reg_defaults,
	361	.num_reg_defaults = ARRAY_SIZE(ad1836_reg_defaults),
	362	.cache_type = REGCACHE_RBTREE,
	363	};
	364
7a79e94e	365	static int ad1836_spi_probe(struct spi_device *spi)
f0fba2ad LG	366	{
	367	struct ad1836_priv *ad1836;
	368	int ret;
	369
6e4f17cb AL	370	ad1836 = devm_kzalloc(&spi->dev, sizeof(struct ad1836_priv),
6e4f17cb AL	371	GFP_KERNEL);
f0fba2ad LG	372	if (ad1836 == NULL)
	373	return -ENOMEM;
	374
7f22fd9c LPC	375	ad1836->regmap = devm_regmap_init_spi(spi, &ad1836_regmap_config);
	376	if (IS_ERR(ad1836->regmap))
	377	return PTR_ERR(ad1836->regmap);
	378
874ce77b LPC	379	ad1836->type = spi_get_device_id(spi)->driver_data;
874ce77b LPC	380
f0fba2ad	381	spi_set_drvdata(spi, ad1836);
f0fba2ad LG	382
f0fba2ad LG	383	ret = snd_soc_register_codec(&spi->dev,
874ce77b	384	&soc_codec_dev_ad1836, &ad183x_dais[ad1836->type], 1);
f0fba2ad LG	385	return ret;
	386	}
	387
7a79e94e	388	static int ad1836_spi_remove(struct spi_device *spi)
f0fba2ad LG	389	{
f0fba2ad LG	390	snd_soc_unregister_codec(&spi->dev);
f0fba2ad LG	391	return 0;
f0fba2ad LG	392	}
6e4f17cb	393
874ce77b LPC	394	static const struct spi_device_id ad1836_ids[] = {
	395	{ "ad1835", AD1835 },
	396	{ "ad1836", AD1836 },
	397	{ "ad1837", AD1835 },
	398	{ "ad1838", AD1838 },
	399	{ "ad1839", AD1838 },
	400	{ },
	401	};
	402	MODULE_DEVICE_TABLE(spi, ad1836_ids);
f0fba2ad LG	403
	404	static struct spi_driver ad1836_spi_driver = {
	405	.driver = {
0679059a	406	.name = "ad1836",
f0fba2ad LG	407	.owner = THIS_MODULE,
	408	},
	409	.probe = ad1836_spi_probe,
7a79e94e	410	.remove = ad1836_spi_remove,
874ce77b	411	.id_table = ad1836_ids,
7eaae41e	412	};
7eaae41e	413
2a9a9c87	414	module_spi_driver(ad1836_spi_driver);
7eaae41e BS	415
	416	MODULE_DESCRIPTION("ASoC ad1836 driver");
	417	MODULE_AUTHOR("Barry Song <21cnbao@gmail.com>");
	418	MODULE_LICENSE("GPL");