/*
 * NAU85L40 ALSA SoC audio driver
 *
 * Copyright 2016 Nuvoton Technology Corp.
 * Author: John Hsu <KCHSU0@nuvoton.com>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 */

#ifndef __NAU8540_H__
#define __NAU8540_H__

#define NAU8540_REG_SW_RESET			0x00
#define NAU8540_REG_POWER_MANAGEMENT	0x01
#define NAU8540_REG_CLOCK_CTRL		0x02
#define NAU8540_REG_CLOCK_SRC			0x03
#define NAU8540_REG_FLL1			0x04
#define NAU8540_REG_FLL2			0x05
#define NAU8540_REG_FLL3			0x06
#define NAU8540_REG_FLL4			0x07
#define NAU8540_REG_FLL5			0x08
#define NAU8540_REG_FLL6			0x09
#define NAU8540_REG_FLL_VCO_RSV		0x0A
#define NAU8540_REG_PCM_CTRL0			0x10
#define NAU8540_REG_PCM_CTRL1			0x11
#define NAU8540_REG_PCM_CTRL2			0x12
#define NAU8540_REG_PCM_CTRL3			0x13
#define NAU8540_REG_PCM_CTRL4			0x14
#define NAU8540_REG_ALC_CONTROL_1		0x20
#define NAU8540_REG_ALC_CONTROL_2		0x21
#define NAU8540_REG_ALC_CONTROL_3		0x22
#define NAU8540_REG_ALC_CONTROL_4		0x23
#define NAU8540_REG_ALC_CONTROL_5		0x24
#define NAU8540_REG_ALC_GAIN_CH12		0x2D
#define NAU8540_REG_ALC_GAIN_CH34		0x2E
#define NAU8540_REG_ALC_STATUS		0x2F
#define NAU8540_REG_NOTCH_FIL1_CH1		0x30
#define NAU8540_REG_NOTCH_FIL2_CH1		0x31
#define NAU8540_REG_NOTCH_FIL1_CH2		0x32
#define NAU8540_REG_NOTCH_FIL2_CH2		0x33
#define NAU8540_REG_NOTCH_FIL1_CH3		0x34
#define NAU8540_REG_NOTCH_FIL2_CH3		0x35
#define NAU8540_REG_NOTCH_FIL1_CH4		0x36
#define NAU8540_REG_NOTCH_FIL2_CH4		0x37
#define NAU8540_REG_HPF_FILTER_CH12		0x38
#define NAU8540_REG_HPF_FILTER_CH34		0x39
#define NAU8540_REG_ADC_SAMPLE_RATE		0x3A
#define NAU8540_REG_DIGITAL_GAIN_CH1		0x40
#define NAU8540_REG_DIGITAL_GAIN_CH2		0x41
#define NAU8540_REG_DIGITAL_GAIN_CH3		0x42
#define NAU8540_REG_DIGITAL_GAIN_CH4		0x43
#define NAU8540_REG_DIGITAL_MUX		0x44
#define NAU8540_REG_P2P_CH1			0x48
#define NAU8540_REG_P2P_CH2			0x49
#define NAU8540_REG_P2P_CH3			0x4A
#define NAU8540_REG_P2P_CH4			0x4B
#define NAU8540_REG_PEAK_CH1			0x4C
#define NAU8540_REG_PEAK_CH2			0x4D
#define NAU8540_REG_PEAK_CH3			0x4E
#define NAU8540_REG_PEAK_CH4			0x4F
#define NAU8540_REG_GPIO_CTRL			0x50
#define NAU8540_REG_MISC_CTRL			0x51
#define NAU8540_REG_I2C_CTRL			0x52
#define NAU8540_REG_I2C_DEVICE_ID		0x58
#define NAU8540_REG_RST			0x5A
#define NAU8540_REG_VMID_CTRL			0x60
#define NAU8540_REG_MUTE			0x61
#define NAU8540_REG_ANALOG_ADC1		0x64
#define NAU8540_REG_ANALOG_ADC2		0x65
#define NAU8540_REG_ANALOG_PWR		0x66
#define NAU8540_REG_MIC_BIAS			0x67
#define NAU8540_REG_REFERENCE			0x68
#define NAU8540_REG_FEPGA1			0x69
#define NAU8540_REG_FEPGA2			0x6A
#define NAU8540_REG_FEPGA3			0x6B
#define NAU8540_REG_FEPGA4			0x6C
#define NAU8540_REG_PWR			0x6D
#define NAU8540_REG_MAX			NAU8540_REG_PWR


/* POWER_MANAGEMENT (0x01) */
#define NAU8540_ADC4_EN		(0x1 << 3)
#define NAU8540_ADC3_EN		(0x1 << 2)
#define NAU8540_ADC2_EN		(0x1 << 1)
#define NAU8540_ADC1_EN		0x1

/* CLOCK_CTRL (0x02) */
#define NAU8540_CLK_ADC_EN		(0x1 << 15)
#define NAU8540_CLK_I2S_EN		(0x1 << 1)

/* CLOCK_SRC (0x03) */
#define NAU8540_CLK_SRC_SFT		15
#define NAU8540_CLK_SRC_MASK		(1 << NAU8540_CLK_SRC_SFT)
#define NAU8540_CLK_SRC_VCO		(1 << NAU8540_CLK_SRC_SFT)
#define NAU8540_CLK_SRC_MCLK		(0 << NAU8540_CLK_SRC_SFT)
#define NAU8540_CLK_ADC_SRC_SFT	6
#define NAU8540_CLK_ADC_SRC_MASK	(0x3 << NAU8540_CLK_ADC_SRC_SFT)
#define NAU8540_CLK_MCLK_SRC_MASK	0xf

/* FLL1 (0x04) */
#define NAU8540_FLL_RATIO_MASK	0x7f

/* FLL3 (0x06) */
#define NAU8540_FLL_CLK_SRC_SFT	10
#define NAU8540_FLL_CLK_SRC_MASK	(0x3 << NAU8540_FLL_CLK_SRC_SFT)
#define NAU8540_FLL_CLK_SRC_MCLK	(0 << NAU8540_FLL_CLK_SRC_SFT)
#define NAU8540_FLL_CLK_SRC_BLK	(0x2 << NAU8540_FLL_CLK_SRC_SFT)
#define NAU8540_FLL_CLK_SRC_FS		(0x3 << NAU8540_FLL_CLK_SRC_SFT)
#define NAU8540_FLL_INTEGER_MASK	0x3ff

/* FLL4 (0x07) */
#define NAU8540_FLL_REF_DIV_SFT	10
#define NAU8540_FLL_REF_DIV_MASK	(0x3 << NAU8540_FLL_REF_DIV_SFT)

/* FLL5 (0x08) */
#define NAU8540_FLL_PDB_DAC_EN	(0x1 << 15)
#define NAU8540_FLL_LOOP_FTR_EN	(0x1 << 14)
#define NAU8540_FLL_CLK_SW_MASK	(0x1 << 13)
#define NAU8540_FLL_CLK_SW_N2		(0x1 << 13)
#define NAU8540_FLL_CLK_SW_REF	(0x0 << 13)
#define NAU8540_FLL_FTR_SW_MASK	(0x1 << 12)
#define NAU8540_FLL_FTR_SW_ACCU	(0x1 << 12)
#define NAU8540_FLL_FTR_SW_FILTER	(0x0 << 12)

/* FLL6 (0x9) */
#define NAU8540_DCO_EN			(0x1 << 15)
#define NAU8540_SDM_EN			(0x1 << 14)

/* PCM_CTRL0 (0x10) */
#define NAU8540_I2S_BP_SFT		7
#define NAU8540_I2S_BP_INV		(0x1 << NAU8540_I2S_BP_SFT)
#define NAU8540_I2S_PCMB_SFT		6
#define NAU8540_I2S_PCMB_EN		(0x1 << NAU8540_I2S_PCMB_SFT)
#define NAU8540_I2S_DL_SFT		2
#define NAU8540_I2S_DL_MASK		(0x3 << NAU8540_I2S_DL_SFT)
#define NAU8540_I2S_DL_16		(0 << NAU8540_I2S_DL_SFT)
#define NAU8540_I2S_DL_20		(0x1 << NAU8540_I2S_DL_SFT)
#define NAU8540_I2S_DL_24		(0x2 << NAU8540_I2S_DL_SFT)
#define NAU8540_I2S_DL_32		(0x3 << NAU8540_I2S_DL_SFT)
#define NAU8540_I2S_DF_MASK		0x3
#define NAU8540_I2S_DF_RIGTH		0
#define NAU8540_I2S_DF_LEFT		0x1
#define NAU8540_I2S_DF_I2S		0x2
#define NAU8540_I2S_DF_PCM_AB		0x3

/* PCM_CTRL1 (0x11) */
#define NAU8540_I2S_LRC_DIV_SFT	12
#define NAU8540_I2S_LRC_DIV_MASK	(0x3 << NAU8540_I2S_LRC_DIV_SFT)
#define NAU8540_I2S_DO12_OE		(0x1 << 4)
#define NAU8540_I2S_MS_SFT		3
#define NAU8540_I2S_MS_MASK		(0x1 << NAU8540_I2S_MS_SFT)
#define NAU8540_I2S_MS_MASTER		(0x1 << NAU8540_I2S_MS_SFT)
#define NAU8540_I2S_MS_SLAVE		(0x0 << NAU8540_I2S_MS_SFT)
#define NAU8540_I2S_BLK_DIV_MASK	0x7

/* PCM_CTRL1 (0x12) */
#define NAU8540_I2S_DO34_OE		(0x1 << 11)
#define NAU8540_I2S_TSLOT_L_MASK	0x3ff

/* PCM_CTRL4 (0x14) */
#define NAU8540_TDM_MODE		(0x1 << 15)
#define NAU8540_TDM_OFFSET_EN		(0x1 << 14)
#define NAU8540_TDM_TX_MASK		0xf

/* ADC_SAMPLE_RATE (0x3A) */
#define NAU8540_ADC_OSR_MASK		0x3
#define NAU8540_ADC_OSR_256		0x3
#define NAU8540_ADC_OSR_128		0x2
#define NAU8540_ADC_OSR_64		0x1
#define NAU8540_ADC_OSR_32		0x0

/* VMID_CTRL (0x60) */
#define NAU8540_VMID_EN		(1 << 6)
#define NAU8540_VMID_SEL_SFT		4
#define NAU8540_VMID_SEL_MASK		(0x3 << NAU8540_VMID_SEL_SFT)

/* MIC_BIAS (0x67) */
#define NAU8540_PU_PRE			(0x1 << 8)

/* REFERENCE (0x68) */
#define NAU8540_PRECHARGE_DIS		(0x1 << 13)
#define NAU8540_GLOBAL_BIAS_EN	(0x1 << 12)


/* System Clock Source */
enum {
	NAU8540_CLK_DIS,
	NAU8540_CLK_MCLK,
	NAU8540_CLK_INTERNAL,
	NAU8540_CLK_FLL_MCLK,
	NAU8540_CLK_FLL_BLK,
	NAU8540_CLK_FLL_FS,
};

struct nau8540 {
	struct device *dev;
	struct regmap *regmap;
};

struct nau8540_fll {
	int mclk_src;
	int ratio;
	int fll_frac;
	int fll_int;
	int clk_ref_div;
};

struct nau8540_fll_attr {
	unsigned int param;
	unsigned int val;
};

/* over sampling rate */
struct nau8540_osr_attr {
	unsigned int osr;
	unsigned int clk_src;
};


#endif	/* __NAU8540_H__ */