/*
 * ADAV80X Audio Codec driver supporting ADAV801, ADAV803
 *
 * Copyright 2011 Analog Devices Inc.
 * Author: Yi Li <yi.li@analog.com>
 * Author: Lars-Peter Clausen <lars@metafoo.de>
 *
 * Licensed under the GPL-2 or later.
 */

#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/regmap.h>
#include <linux/slab.h>

#include <sound/pcm.h>
#include <sound/pcm_params.h>
#include <sound/soc.h>
#include <sound/tlv.h>

#include "adav80x.h"

#define ADAV80X_PLAYBACK_CTRL	0x04
#define ADAV80X_AUX_IN_CTRL	0x05
#define ADAV80X_REC_CTRL	0x06
#define ADAV80X_AUX_OUT_CTRL	0x07
#define ADAV80X_DPATH_CTRL1	0x62
#define ADAV80X_DPATH_CTRL2	0x63
#define ADAV80X_DAC_CTRL1	0x64
#define ADAV80X_DAC_CTRL2	0x65
#define ADAV80X_DAC_CTRL3	0x66
#define ADAV80X_DAC_L_VOL	0x68
#define ADAV80X_DAC_R_VOL	0x69
#define ADAV80X_PGA_L_VOL	0x6c
#define ADAV80X_PGA_R_VOL	0x6d
#define ADAV80X_ADC_CTRL1	0x6e
#define ADAV80X_ADC_CTRL2	0x6f
#define ADAV80X_ADC_L_VOL	0x70
#define ADAV80X_ADC_R_VOL	0x71
#define ADAV80X_PLL_CTRL1	0x74
#define ADAV80X_PLL_CTRL2	0x75
#define ADAV80X_ICLK_CTRL1	0x76
#define ADAV80X_ICLK_CTRL2	0x77
#define ADAV80X_PLL_CLK_SRC	0x78
#define ADAV80X_PLL_OUTE	0x7a

#define ADAV80X_PLL_CLK_SRC_PLL_XIN(pll)	0x00
#define ADAV80X_PLL_CLK_SRC_PLL_MCLKI(pll)	(0x40 << (pll))
#define ADAV80X_PLL_CLK_SRC_PLL_MASK(pll)	(0x40 << (pll))

#define ADAV80X_ICLK_CTRL1_DAC_SRC(src)		((src) << 5)
#define ADAV80X_ICLK_CTRL1_ADC_SRC(src)		((src) << 2)
#define ADAV80X_ICLK_CTRL1_ICLK2_SRC(src)	(src)
#define ADAV80X_ICLK_CTRL2_ICLK1_SRC(src)	((src) << 3)

#define ADAV80X_PLL_CTRL1_PLLDIV		0x10
#define ADAV80X_PLL_CTRL1_PLLPD(pll)		(0x04 << (pll))
#define ADAV80X_PLL_CTRL1_XTLPD			0x02

#define ADAV80X_PLL_CTRL2_FIELD(pll, x)		((x) << ((pll) * 4))

#define ADAV80X_PLL_CTRL2_FS_48(pll)	ADAV80X_PLL_CTRL2_FIELD((pll), 0x00)
#define ADAV80X_PLL_CTRL2_FS_32(pll)	ADAV80X_PLL_CTRL2_FIELD((pll), 0x08)
#define ADAV80X_PLL_CTRL2_FS_44(pll)	ADAV80X_PLL_CTRL2_FIELD((pll), 0x0c)

#define ADAV80X_PLL_CTRL2_SEL(pll)	ADAV80X_PLL_CTRL2_FIELD((pll), 0x02)
#define ADAV80X_PLL_CTRL2_DOUB(pll)	ADAV80X_PLL_CTRL2_FIELD((pll), 0x01)
#define ADAV80X_PLL_CTRL2_PLL_MASK(pll) ADAV80X_PLL_CTRL2_FIELD((pll), 0x0f)

#define ADAV80X_ADC_CTRL1_MODULATOR_MASK	0x80
#define ADAV80X_ADC_CTRL1_MODULATOR_128FS	0x00
#define ADAV80X_ADC_CTRL1_MODULATOR_64FS	0x80

#define ADAV80X_DAC_CTRL1_PD			0x80

#define ADAV80X_DAC_CTRL2_DIV1			0x00
#define ADAV80X_DAC_CTRL2_DIV1_5		0x10
#define ADAV80X_DAC_CTRL2_DIV2			0x20
#define ADAV80X_DAC_CTRL2_DIV3			0x30
#define ADAV80X_DAC_CTRL2_DIV_MASK		0x30

#define ADAV80X_DAC_CTRL2_INTERPOL_256FS	0x00
#define ADAV80X_DAC_CTRL2_INTERPOL_128FS	0x40
#define ADAV80X_DAC_CTRL2_INTERPOL_64FS		0x80
#define ADAV80X_DAC_CTRL2_INTERPOL_MASK		0xc0

#define ADAV80X_DAC_CTRL2_DEEMPH_NONE		0x00
#define ADAV80X_DAC_CTRL2_DEEMPH_44		0x01
#define ADAV80X_DAC_CTRL2_DEEMPH_32		0x02
#define ADAV80X_DAC_CTRL2_DEEMPH_48		0x03
#define ADAV80X_DAC_CTRL2_DEEMPH_MASK		0x01

#define ADAV80X_CAPTURE_MODE_MASTER		0x20
#define ADAV80X_CAPTURE_WORD_LEN24		0x00
#define ADAV80X_CAPTURE_WORD_LEN20		0x04
#define ADAV80X_CAPTRUE_WORD_LEN18		0x08
#define ADAV80X_CAPTURE_WORD_LEN16		0x0c
#define ADAV80X_CAPTURE_WORD_LEN_MASK		0x0c

#define ADAV80X_CAPTURE_MODE_LEFT_J		0x00
#define ADAV80X_CAPTURE_MODE_I2S		0x01
#define ADAV80X_CAPTURE_MODE_RIGHT_J		0x03
#define ADAV80X_CAPTURE_MODE_MASK		0x03

#define ADAV80X_PLAYBACK_MODE_MASTER		0x10
#define ADAV80X_PLAYBACK_MODE_LEFT_J		0x00
#define ADAV80X_PLAYBACK_MODE_I2S		0x01
#define ADAV80X_PLAYBACK_MODE_RIGHT_J_24	0x04
#define ADAV80X_PLAYBACK_MODE_RIGHT_J_20	0x05
#define ADAV80X_PLAYBACK_MODE_RIGHT_J_18	0x06
#define ADAV80X_PLAYBACK_MODE_RIGHT_J_16	0x07
#define ADAV80X_PLAYBACK_MODE_MASK		0x07

#define ADAV80X_PLL_OUTE_SYSCLKPD(x)		BIT(2 - (x))

static const struct reg_default adav80x_reg_defaults[] = {
	{ ADAV80X_PLAYBACK_CTRL,	0x01 },
	{ ADAV80X_AUX_IN_CTRL,		0x01 },
	{ ADAV80X_REC_CTRL,		0x02 },
	{ ADAV80X_AUX_OUT_CTRL,		0x01 },
	{ ADAV80X_DPATH_CTRL1,		0xc0 },
	{ ADAV80X_DPATH_CTRL2,		0x11 },
	{ ADAV80X_DAC_CTRL1,		0x00 },
	{ ADAV80X_DAC_CTRL2,		0x00 },
	{ ADAV80X_DAC_CTRL3,		0x00 },
	{ ADAV80X_DAC_L_VOL,		0xff },
	{ ADAV80X_DAC_R_VOL,		0xff },
	{ ADAV80X_PGA_L_VOL,		0x00 },
	{ ADAV80X_PGA_R_VOL,		0x00 },
	{ ADAV80X_ADC_CTRL1,		0x00 },
	{ ADAV80X_ADC_CTRL2,		0x00 },
	{ ADAV80X_ADC_L_VOL,		0xff },
	{ ADAV80X_ADC_R_VOL,		0xff },
	{ ADAV80X_PLL_CTRL1,		0x00 },
	{ ADAV80X_PLL_CTRL2,		0x00 },
	{ ADAV80X_ICLK_CTRL1,		0x00 },
	{ ADAV80X_ICLK_CTRL2,		0x00 },
	{ ADAV80X_PLL_CLK_SRC,		0x00 },
	{ ADAV80X_PLL_OUTE,		0x00 },
};

struct adav80x {
	struct regmap *regmap;

	enum adav80x_clk_src clk_src;
	unsigned int sysclk;
	enum adav80x_pll_src pll_src;

	unsigned int dai_fmt[2];
	unsigned int rate;
	bool deemph;
	bool sysclk_pd[3];
};

static const char *adav80x_mux_text[] = {
	"ADC",
	"Playback",
	"Aux Playback",
};

static const unsigned int adav80x_mux_values[] = {
	0, 2, 3,
};

#define ADAV80X_MUX_ENUM_DECL(name, reg, shift) \
	SOC_VALUE_ENUM_DOUBLE_DECL(name, reg, shift, 7, \
		ARRAY_SIZE(adav80x_mux_text), adav80x_mux_text, \
		adav80x_mux_values)

static ADAV80X_MUX_ENUM_DECL(adav80x_aux_capture_enum, ADAV80X_DPATH_CTRL1, 0);
static ADAV80X_MUX_ENUM_DECL(adav80x_capture_enum, ADAV80X_DPATH_CTRL1, 3);
static ADAV80X_MUX_ENUM_DECL(adav80x_dac_enum, ADAV80X_DPATH_CTRL2, 3);

static const struct snd_kcontrol_new adav80x_aux_capture_mux_ctrl =
	SOC_DAPM_ENUM("Route", adav80x_aux_capture_enum);
static const struct snd_kcontrol_new adav80x_capture_mux_ctrl =
	SOC_DAPM_ENUM("Route", adav80x_capture_enum);
static const struct snd_kcontrol_new adav80x_dac_mux_ctrl =
	SOC_DAPM_ENUM("Route", adav80x_dac_enum);

#define ADAV80X_MUX(name, ctrl) \
	SND_SOC_DAPM_MUX(name, SND_SOC_NOPM, 0, 0, ctrl)

static const struct snd_soc_dapm_widget adav80x_dapm_widgets[] = {
	SND_SOC_DAPM_DAC("DAC", NULL, ADAV80X_DAC_CTRL1, 7, 1),
	SND_SOC_DAPM_ADC("ADC", NULL, ADAV80X_ADC_CTRL1, 5, 1),

	SND_SOC_DAPM_PGA("Right PGA", ADAV80X_ADC_CTRL1, 0, 1, NULL, 0),
	SND_SOC_DAPM_PGA("Left PGA", ADAV80X_ADC_CTRL1, 1, 1, NULL, 0),

	SND_SOC_DAPM_AIF_OUT("AIFOUT", "HiFi Capture", 0, SND_SOC_NOPM, 0, 0),
	SND_SOC_DAPM_AIF_IN("AIFIN", "HiFi Playback", 0, SND_SOC_NOPM, 0, 0),

	SND_SOC_DAPM_AIF_OUT("AIFAUXOUT", "Aux Capture", 0, SND_SOC_NOPM, 0, 0),
	SND_SOC_DAPM_AIF_IN("AIFAUXIN", "Aux Playback", 0, SND_SOC_NOPM, 0, 0),

	ADAV80X_MUX("Aux Capture Select", &adav80x_aux_capture_mux_ctrl),
	ADAV80X_MUX("Capture Select", &adav80x_capture_mux_ctrl),
	ADAV80X_MUX("DAC Select", &adav80x_dac_mux_ctrl),

	SND_SOC_DAPM_INPUT("VINR"),
	SND_SOC_DAPM_INPUT("VINL"),
	SND_SOC_DAPM_OUTPUT("VOUTR"),
	SND_SOC_DAPM_OUTPUT("VOUTL"),

	SND_SOC_DAPM_SUPPLY("SYSCLK", SND_SOC_NOPM, 0, 0, NULL, 0),
	SND_SOC_DAPM_SUPPLY("PLL1", ADAV80X_PLL_CTRL1, 2, 1, NULL, 0),
	SND_SOC_DAPM_SUPPLY("PLL2", ADAV80X_PLL_CTRL1, 3, 1, NULL, 0),
	SND_SOC_DAPM_SUPPLY("OSC", ADAV80X_PLL_CTRL1, 1, 1, NULL, 0),
};

static int adav80x_dapm_sysclk_check(struct snd_soc_dapm_widget *source,
			 struct snd_soc_dapm_widget *sink)
{
	struct snd_soc_codec *codec = snd_soc_dapm_to_codec(source->dapm);
	struct adav80x *adav80x = snd_soc_codec_get_drvdata(codec);
	const char *clk;

	switch (adav80x->clk_src) {
	case ADAV80X_CLK_PLL1:
		clk = "PLL1";
		break;
	case ADAV80X_CLK_PLL2:
		clk = "PLL2";
		break;
	case ADAV80X_CLK_XTAL:
		clk = "OSC";
		break;
	default:
		return 0;
	}

	return strcmp(source->name, clk) == 0;
}

static int adav80x_dapm_pll_check(struct snd_soc_dapm_widget *source,
			 struct snd_soc_dapm_widget *sink)
{
	struct snd_soc_codec *codec = snd_soc_dapm_to_codec(source->dapm);
	struct adav80x *adav80x = snd_soc_codec_get_drvdata(codec);

	return adav80x->pll_src == ADAV80X_PLL_SRC_XTAL;
}


static const struct snd_soc_dapm_route adav80x_dapm_routes[] = {
	{ "DAC Select", "ADC", "ADC" },
	{ "DAC Select", "Playback", "AIFIN" },
	{ "DAC Select", "Aux Playback", "AIFAUXIN" },
	{ "DAC", NULL,  "DAC Select" },

	{ "Capture Select", "ADC", "ADC" },
	{ "Capture Select", "Playback", "AIFIN" },
	{ "Capture Select", "Aux Playback", "AIFAUXIN" },
	{ "AIFOUT", NULL,  "Capture Select" },

	{ "Aux Capture Select", "ADC", "ADC" },
	{ "Aux Capture Select", "Playback", "AIFIN" },
	{ "Aux Capture Select", "Aux Playback", "AIFAUXIN" },
	{ "AIFAUXOUT", NULL,  "Aux Capture Select" },

	{ "VOUTR",  NULL, "DAC" },
	{ "VOUTL",  NULL, "DAC" },

	{ "Left PGA", NULL, "VINL" },
	{ "Right PGA", NULL, "VINR" },
	{ "ADC", NULL, "Left PGA" },
	{ "ADC", NULL, "Right PGA" },

	{ "SYSCLK", NULL, "PLL1", adav80x_dapm_sysclk_check },
	{ "SYSCLK", NULL, "PLL2", adav80x_dapm_sysclk_check },
	{ "SYSCLK", NULL, "OSC", adav80x_dapm_sysclk_check },
	{ "PLL1", NULL, "OSC", adav80x_dapm_pll_check },
	{ "PLL2", NULL, "OSC", adav80x_dapm_pll_check },

	{ "ADC", NULL, "SYSCLK" },
	{ "DAC", NULL, "SYSCLK" },
	{ "AIFOUT", NULL, "SYSCLK" },
	{ "AIFAUXOUT", NULL, "SYSCLK" },
	{ "AIFIN", NULL, "SYSCLK" },
	{ "AIFAUXIN", NULL, "SYSCLK" },
};

static int adav80x_set_deemph(struct snd_soc_codec *codec)
{
	struct adav80x *adav80x = snd_soc_codec_get_drvdata(codec);
	unsigned int val;

	if (adav80x->deemph) {
		switch (adav80x->rate) {
		case 32000:
			val = ADAV80X_DAC_CTRL2_DEEMPH_32;
			break;
		case 44100:
			val = ADAV80X_DAC_CTRL2_DEEMPH_44;
			break;
		case 48000:
		case 64000:
		case 88200:
		case 96000:
			val = ADAV80X_DAC_CTRL2_DEEMPH_48;
			break;
		default:
			val = ADAV80X_DAC_CTRL2_DEEMPH_NONE;
			break;
		}
	} else {
		val = ADAV80X_DAC_CTRL2_DEEMPH_NONE;
	}

	return regmap_update_bits(adav80x->regmap, ADAV80X_DAC_CTRL2,
		ADAV80X_DAC_CTRL2_DEEMPH_MASK, val);
}

static int adav80x_put_deemph(struct snd_kcontrol *kcontrol,
		struct snd_ctl_elem_value *ucontrol)
{
	struct snd_soc_codec *codec = snd_soc_kcontrol_codec(kcontrol);
	struct adav80x *adav80x = snd_soc_codec_get_drvdata(codec);
	unsigned int deemph = ucontrol->value.integer.value[0];

	if (deemph > 1)
		return -EINVAL;

	adav80x->deemph = deemph;

	return adav80x_set_deemph(codec);
}

static int adav80x_get_deemph(struct snd_kcontrol *kcontrol,
				struct snd_ctl_elem_value *ucontrol)
{
	struct snd_soc_codec *codec = snd_soc_kcontrol_codec(kcontrol);
	struct adav80x *adav80x = snd_soc_codec_get_drvdata(codec);

	ucontrol->value.integer.value[0] = adav80x->deemph;
	return 0;
};

static const DECLARE_TLV_DB_SCALE(adav80x_inpga_tlv, 0, 50, 0);
static const DECLARE_TLV_DB_MINMAX(adav80x_digital_tlv, -9563, 0);

static const struct snd_kcontrol_new adav80x_controls[] = {
	SOC_DOUBLE_R_TLV("Master Playback Volume", ADAV80X_DAC_L_VOL,
		ADAV80X_DAC_R_VOL, 0, 0xff, 0, adav80x_digital_tlv),
	SOC_DOUBLE_R_TLV("Master Capture Volume", ADAV80X_ADC_L_VOL,
			ADAV80X_ADC_R_VOL, 0, 0xff, 0, adav80x_digital_tlv),

	SOC_DOUBLE_R_TLV("PGA Capture Volume", ADAV80X_PGA_L_VOL,
			ADAV80X_PGA_R_VOL, 0, 0x30, 0, adav80x_inpga_tlv),

	SOC_DOUBLE("Master Playback Switch", ADAV80X_DAC_CTRL1, 0, 1, 1, 0),
	SOC_DOUBLE("Master Capture Switch", ADAV80X_ADC_CTRL1, 2, 3, 1, 1),

	SOC_SINGLE("ADC High Pass Filter Switch", ADAV80X_ADC_CTRL1, 6, 1, 0),

	SOC_SINGLE_BOOL_EXT("Playback De-emphasis Switch", 0,
			adav80x_get_deemph, adav80x_put_deemph),
};

static unsigned int adav80x_port_ctrl_regs[2][2] = {
	{ ADAV80X_REC_CTRL, ADAV80X_PLAYBACK_CTRL, },
	{ ADAV80X_AUX_OUT_CTRL, ADAV80X_AUX_IN_CTRL },
};

static int adav80x_set_dai_fmt(struct snd_soc_dai *dai, unsigned int fmt)
{
	struct snd_soc_codec *codec = dai->codec;
	struct adav80x *adav80x = snd_soc_codec_get_drvdata(codec);
	unsigned int capture = 0x00;
	unsigned int playback = 0x00;

	switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
	case SND_SOC_DAIFMT_CBM_CFM:
		capture |= ADAV80X_CAPTURE_MODE_MASTER;
		playback |= ADAV80X_PLAYBACK_MODE_MASTER;
	case SND_SOC_DAIFMT_CBS_CFS:
		break;
	default:
		return -EINVAL;
	}

	switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
	case SND_SOC_DAIFMT_I2S:
		capture |= ADAV80X_CAPTURE_MODE_I2S;
		playback |= ADAV80X_PLAYBACK_MODE_I2S;
		break;
	case SND_SOC_DAIFMT_LEFT_J:
		capture |= ADAV80X_CAPTURE_MODE_LEFT_J;
		playback |= ADAV80X_PLAYBACK_MODE_LEFT_J;
		break;
	case SND_SOC_DAIFMT_RIGHT_J:
		capture |= ADAV80X_CAPTURE_MODE_RIGHT_J;
		playback |= ADAV80X_PLAYBACK_MODE_RIGHT_J_24;
		break;
	default:
		return -EINVAL;
	}

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

	regmap_update_bits(adav80x->regmap, adav80x_port_ctrl_regs[dai->id][0],
		ADAV80X_CAPTURE_MODE_MASK | ADAV80X_CAPTURE_MODE_MASTER,
		capture);
	regmap_write(adav80x->regmap, adav80x_port_ctrl_regs[dai->id][1],
		playback);

	adav80x->dai_fmt[dai->id] = fmt & SND_SOC_DAIFMT_FORMAT_MASK;

	return 0;
}

static int adav80x_set_adc_clock(struct snd_soc_codec *codec,
		unsigned int sample_rate)
{
	struct adav80x *adav80x = snd_soc_codec_get_drvdata(codec);
	unsigned int val;

	if (sample_rate <= 48000)
		val = ADAV80X_ADC_CTRL1_MODULATOR_128FS;
	else
		val = ADAV80X_ADC_CTRL1_MODULATOR_64FS;

	regmap_update_bits(adav80x->regmap, ADAV80X_ADC_CTRL1,
		ADAV80X_ADC_CTRL1_MODULATOR_MASK, val);

	return 0;
}

static int adav80x_set_dac_clock(struct snd_soc_codec *codec,
		unsigned int sample_rate)
{
	struct adav80x *adav80x = snd_soc_codec_get_drvdata(codec);
	unsigned int val;

	if (sample_rate <= 48000)
		val = ADAV80X_DAC_CTRL2_DIV1 | ADAV80X_DAC_CTRL2_INTERPOL_256FS;
	else
		val = ADAV80X_DAC_CTRL2_DIV2 | ADAV80X_DAC_CTRL2_INTERPOL_128FS;

	regmap_update_bits(adav80x->regmap, ADAV80X_DAC_CTRL2,
		ADAV80X_DAC_CTRL2_DIV_MASK | ADAV80X_DAC_CTRL2_INTERPOL_MASK,
		val);

	return 0;
}

static int adav80x_set_capture_pcm_format(struct snd_soc_codec *codec,
		struct snd_soc_dai *dai, struct snd_pcm_hw_params *params)
{
	struct adav80x *adav80x = snd_soc_codec_get_drvdata(codec);
	unsigned int val;

	switch (params_width(params)) {
	case 16:
		val = ADAV80X_CAPTURE_WORD_LEN16;
		break;
	case 18:
		val = ADAV80X_CAPTRUE_WORD_LEN18;
		break;
	case 20:
		val = ADAV80X_CAPTURE_WORD_LEN20;
		break;
	case 24:
		val = ADAV80X_CAPTURE_WORD_LEN24;
		break;
	default:
		return -EINVAL;
	}

	regmap_update_bits(adav80x->regmap, adav80x_port_ctrl_regs[dai->id][0],
		ADAV80X_CAPTURE_WORD_LEN_MASK, val);

	return 0;
}

static int adav80x_set_playback_pcm_format(struct snd_soc_codec *codec,
		struct snd_soc_dai *dai, struct snd_pcm_hw_params *params)
{
	struct adav80x *adav80x = snd_soc_codec_get_drvdata(codec);
	unsigned int val;

	if (adav80x->dai_fmt[dai->id] != SND_SOC_DAIFMT_RIGHT_J)
		return 0;

	switch (params_width(params)) {
	case 16:
		val = ADAV80X_PLAYBACK_MODE_RIGHT_J_16;
		break;
	case 18:
		val = ADAV80X_PLAYBACK_MODE_RIGHT_J_18;
		break;
	case 20:
		val = ADAV80X_PLAYBACK_MODE_RIGHT_J_20;
		break;
	case 24:
		val = ADAV80X_PLAYBACK_MODE_RIGHT_J_24;
		break;
	default:
		return -EINVAL;
	}

	regmap_update_bits(adav80x->regmap, adav80x_port_ctrl_regs[dai->id][1],
		ADAV80X_PLAYBACK_MODE_MASK, val);

	return 0;
}

static int adav80x_hw_params(struct snd_pcm_substream *substream,
		struct snd_pcm_hw_params *params, struct snd_soc_dai *dai)
{
	struct snd_soc_codec *codec = dai->codec;
	struct adav80x *adav80x = snd_soc_codec_get_drvdata(codec);
	unsigned int rate = params_rate(params);

	if (rate * 256 != adav80x->sysclk)
		return -EINVAL;

	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
		adav80x_set_playback_pcm_format(codec, dai, params);
		adav80x_set_dac_clock(codec, rate);
	} else {
		adav80x_set_capture_pcm_format(codec, dai, params);
		adav80x_set_adc_clock(codec, rate);
	}
	adav80x->rate = rate;
	adav80x_set_deemph(codec);

	return 0;
}

static int adav80x_set_sysclk(struct snd_soc_codec *codec,
			      int clk_id, int source,
			      unsigned int freq, int dir)
{
	struct adav80x *adav80x = snd_soc_codec_get_drvdata(codec);
	struct snd_soc_dapm_context *dapm = snd_soc_codec_get_dapm(codec);

	if (dir == SND_SOC_CLOCK_IN) {
		switch (clk_id) {
		case ADAV80X_CLK_XIN:
		case ADAV80X_CLK_XTAL:
		case ADAV80X_CLK_MCLKI:
		case ADAV80X_CLK_PLL1:
		case ADAV80X_CLK_PLL2:
			break;
		default:
			return -EINVAL;
		}

		adav80x->sysclk = freq;

		if (adav80x->clk_src != clk_id) {
			unsigned int iclk_ctrl1, iclk_ctrl2;

			adav80x->clk_src = clk_id;
			if (clk_id == ADAV80X_CLK_XTAL)
				clk_id = ADAV80X_CLK_XIN;

			iclk_ctrl1 = ADAV80X_ICLK_CTRL1_DAC_SRC(clk_id) |
					ADAV80X_ICLK_CTRL1_ADC_SRC(clk_id) |
					ADAV80X_ICLK_CTRL1_ICLK2_SRC(clk_id);
			iclk_ctrl2 = ADAV80X_ICLK_CTRL2_ICLK1_SRC(clk_id);

			regmap_write(adav80x->regmap, ADAV80X_ICLK_CTRL1,
				iclk_ctrl1);
			regmap_write(adav80x->regmap, ADAV80X_ICLK_CTRL2,
				iclk_ctrl2);

			snd_soc_dapm_sync(dapm);
		}
	} else {
		unsigned int mask;

		switch (clk_id) {
		case ADAV80X_CLK_SYSCLK1:
		case ADAV80X_CLK_SYSCLK2:
		case ADAV80X_CLK_SYSCLK3:
			break;
		default:
			return -EINVAL;
		}

		clk_id -= ADAV80X_CLK_SYSCLK1;
		mask = ADAV80X_PLL_OUTE_SYSCLKPD(clk_id);

		if (freq == 0) {
			regmap_update_bits(adav80x->regmap, ADAV80X_PLL_OUTE,
				mask, mask);
			adav80x->sysclk_pd[clk_id] = true;
		} else {
			regmap_update_bits(adav80x->regmap, ADAV80X_PLL_OUTE,
				mask, 0);
			adav80x->sysclk_pd[clk_id] = false;
		}

		snd_soc_dapm_mutex_lock(dapm);

		if (adav80x->sysclk_pd[0])
			snd_soc_dapm_disable_pin_unlocked(dapm, "PLL1");
		else
			snd_soc_dapm_force_enable_pin_unlocked(dapm, "PLL1");

		if (adav80x->sysclk_pd[1] || adav80x->sysclk_pd[2])
			snd_soc_dapm_disable_pin_unlocked(dapm, "PLL2");
		else
			snd_soc_dapm_force_enable_pin_unlocked(dapm, "PLL2");

		snd_soc_dapm_sync_unlocked(dapm);

		snd_soc_dapm_mutex_unlock(dapm);
	}

	return 0;
}

static int adav80x_set_pll(struct snd_soc_codec *codec, int pll_id,
		int source, unsigned int freq_in, unsigned int freq_out)
{
	struct snd_soc_dapm_context *dapm = snd_soc_codec_get_dapm(codec);
	struct adav80x *adav80x = snd_soc_codec_get_drvdata(codec);
	unsigned int pll_ctrl1 = 0;
	unsigned int pll_ctrl2 = 0;
	unsigned int pll_src;

	switch (source) {
	case ADAV80X_PLL_SRC_XTAL:
	case ADAV80X_PLL_SRC_XIN:
	case ADAV80X_PLL_SRC_MCLKI:
		break;
	default:
		return -EINVAL;
	}

	if (!freq_out)
		return 0;

	switch (freq_in) {
	case 27000000:
		break;
	case 54000000:
		if (source == ADAV80X_PLL_SRC_XIN) {
			pll_ctrl1 |= ADAV80X_PLL_CTRL1_PLLDIV;
			break;
		}
	default:
		return -EINVAL;
	}

	if (freq_out > 12288000) {
		pll_ctrl2 |= ADAV80X_PLL_CTRL2_DOUB(pll_id);
		freq_out /= 2;
	}

	/* freq_out = sample_rate * 256 */
	switch (freq_out) {
	case 8192000:
		pll_ctrl2 |= ADAV80X_PLL_CTRL2_FS_32(pll_id);
		break;
	case 11289600:
		pll_ctrl2 |= ADAV80X_PLL_CTRL2_FS_44(pll_id);
		break;
	case 12288000:
		pll_ctrl2 |= ADAV80X_PLL_CTRL2_FS_48(pll_id);
		break;
	default:
		return -EINVAL;
	}

	regmap_update_bits(adav80x->regmap, ADAV80X_PLL_CTRL1,
			ADAV80X_PLL_CTRL1_PLLDIV, pll_ctrl1);
	regmap_update_bits(adav80x->regmap, ADAV80X_PLL_CTRL2,
			ADAV80X_PLL_CTRL2_PLL_MASK(pll_id), pll_ctrl2);

	if (source != adav80x->pll_src) {
		if (source == ADAV80X_PLL_SRC_MCLKI)
			pll_src = ADAV80X_PLL_CLK_SRC_PLL_MCLKI(pll_id);
		else
			pll_src = ADAV80X_PLL_CLK_SRC_PLL_XIN(pll_id);

		regmap_update_bits(adav80x->regmap, ADAV80X_PLL_CLK_SRC,
				ADAV80X_PLL_CLK_SRC_PLL_MASK(pll_id), pll_src);

		adav80x->pll_src = source;

		snd_soc_dapm_sync(dapm);
	}

	return 0;
}

static int adav80x_set_bias_level(struct snd_soc_codec *codec,
		enum snd_soc_bias_level level)
{
	struct adav80x *adav80x = snd_soc_codec_get_drvdata(codec);
	unsigned int mask = ADAV80X_DAC_CTRL1_PD;

	switch (level) {
	case SND_SOC_BIAS_ON:
		break;
	case SND_SOC_BIAS_PREPARE:
		break;
	case SND_SOC_BIAS_STANDBY:
		regmap_update_bits(adav80x->regmap, ADAV80X_DAC_CTRL1, mask,
			0x00);
		break;
	case SND_SOC_BIAS_OFF:
		regmap_update_bits(adav80x->regmap, ADAV80X_DAC_CTRL1, mask,
			mask);
		break;
	}

	return 0;
}

/* Enforce the same sample rate on all audio interfaces */
static int adav80x_dai_startup(struct snd_pcm_substream *substream,
	struct snd_soc_dai *dai)
{
	struct snd_soc_codec *codec = dai->codec;
	struct adav80x *adav80x = snd_soc_codec_get_drvdata(codec);

	if (!snd_soc_codec_is_active(codec) || !adav80x->rate)
		return 0;

	return snd_pcm_hw_constraint_single(substream->runtime,
			SNDRV_PCM_HW_PARAM_RATE, adav80x->rate);
}

static void adav80x_dai_shutdown(struct snd_pcm_substream *substream,
		struct snd_soc_dai *dai)
{
	struct snd_soc_codec *codec = dai->codec;
	struct adav80x *adav80x = snd_soc_codec_get_drvdata(codec);

	if (!snd_soc_codec_is_active(codec))
		adav80x->rate = 0;
}

static const struct snd_soc_dai_ops adav80x_dai_ops = {
	.set_fmt = adav80x_set_dai_fmt,
	.hw_params = adav80x_hw_params,
	.startup = adav80x_dai_startup,
	.shutdown = adav80x_dai_shutdown,
};

#define ADAV80X_PLAYBACK_RATES (SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 | \
	SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_64000 | SNDRV_PCM_RATE_88200 | \
	SNDRV_PCM_RATE_96000)

#define ADAV80X_CAPTURE_RATES (SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_96000)

#define ADAV80X_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S18_3LE | \
	SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S24_LE)

static struct snd_soc_dai_driver adav80x_dais[] = {
	{
		.name = "adav80x-hifi",
		.id = 0,
		.playback = {
			.stream_name = "HiFi Playback",
			.channels_min = 2,
			.channels_max = 2,
			.rates = ADAV80X_PLAYBACK_RATES,
			.formats = ADAV80X_FORMATS,
	},
		.capture = {
			.stream_name = "HiFi Capture",
			.channels_min = 2,
			.channels_max = 2,
			.rates = ADAV80X_CAPTURE_RATES,
			.formats = ADAV80X_FORMATS,
		},
		.ops = &adav80x_dai_ops,
	},
	{
		.name = "adav80x-aux",
		.id = 1,
		.playback = {
			.stream_name = "Aux Playback",
			.channels_min = 2,
			.channels_max = 2,
			.rates = ADAV80X_PLAYBACK_RATES,
			.formats = ADAV80X_FORMATS,
		},
		.capture = {
			.stream_name = "Aux Capture",
			.channels_min = 2,
			.channels_max = 2,
			.rates = ADAV80X_CAPTURE_RATES,
			.formats = ADAV80X_FORMATS,
		},
		.ops = &adav80x_dai_ops,
	},
};

static int adav80x_probe(struct snd_soc_codec *codec)
{
	struct snd_soc_dapm_context *dapm = snd_soc_codec_get_dapm(codec);
	struct adav80x *adav80x = snd_soc_codec_get_drvdata(codec);

	/* Force PLLs on for SYSCLK output */
	snd_soc_dapm_force_enable_pin(dapm, "PLL1");
	snd_soc_dapm_force_enable_pin(dapm, "PLL2");

	/* Power down S/PDIF receiver, since it is currently not supported */
	regmap_write(adav80x->regmap, ADAV80X_PLL_OUTE, 0x20);
	/* Disable DAC zero flag */
	regmap_write(adav80x->regmap, ADAV80X_DAC_CTRL3, 0x6);

	return 0;
}

static int adav80x_resume(struct snd_soc_codec *codec)
{
	struct adav80x *adav80x = snd_soc_codec_get_drvdata(codec);

	regcache_sync(adav80x->regmap);

	return 0;
}

static struct snd_soc_codec_driver adav80x_codec_driver = {
	.probe = adav80x_probe,
	.resume = adav80x_resume,
	.set_bias_level = adav80x_set_bias_level,
	.suspend_bias_off = true,

	.set_pll = adav80x_set_pll,
	.set_sysclk = adav80x_set_sysclk,

	.controls = adav80x_controls,
	.num_controls = ARRAY_SIZE(adav80x_controls),
	.dapm_widgets = adav80x_dapm_widgets,
	.num_dapm_widgets = ARRAY_SIZE(adav80x_dapm_widgets),
	.dapm_routes = adav80x_dapm_routes,
	.num_dapm_routes = ARRAY_SIZE(adav80x_dapm_routes),
};

int adav80x_bus_probe(struct device *dev, struct regmap *regmap)
{
	struct adav80x *adav80x;

	if (IS_ERR(regmap))
		return PTR_ERR(regmap);

	adav80x = devm_kzalloc(dev, sizeof(*adav80x), GFP_KERNEL);
	if (!adav80x)
		return -ENOMEM;

	dev_set_drvdata(dev, adav80x);
	adav80x->regmap = regmap;

	return snd_soc_register_codec(dev, &adav80x_codec_driver,
		adav80x_dais, ARRAY_SIZE(adav80x_dais));
}
EXPORT_SYMBOL_GPL(adav80x_bus_probe);

const struct regmap_config adav80x_regmap_config = {
	.val_bits = 8,
	.pad_bits = 1,
	.reg_bits = 7,

	.max_register = ADAV80X_PLL_OUTE,

	.cache_type = REGCACHE_RBTREE,
	.reg_defaults = adav80x_reg_defaults,
	.num_reg_defaults = ARRAY_SIZE(adav80x_reg_defaults),
};
EXPORT_SYMBOL_GPL(adav80x_regmap_config);

MODULE_DESCRIPTION("ASoC ADAV80x driver");
MODULE_AUTHOR("Lars-Peter Clausen <lars@metafoo.de>");
MODULE_AUTHOR("Yi Li <yi.li@analog.com>>");
MODULE_LICENSE("GPL");
