--- /dev/null
+/*
+ * NAU8825 ALSA SoC audio driver
+ *
+ * Copyright 2015 Google Inc.
+ * Author: Anatol Pomozov <anatol.pomozov@chrominium.org>
+ *
+ * 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 __NAU8825_H__
+#define __NAU8825_H__
+
+#define NAU8825_REG_RESET 0x00
+#define NAU8825_REG_ENA_CTRL 0x01
+#define NAU8825_REG_CLK_DIVIDER 0x03
+#define NAU8825_REG_FLL1 0x04
+#define NAU8825_REG_FLL2 0x05
+#define NAU8825_REG_FLL3 0x06
+#define NAU8825_REG_FLL4 0x07
+#define NAU8825_REG_FLL5 0x08
+#define NAU8825_REG_FLL6 0x09
+#define NAU8825_REG_FLL_VCO_RSV 0x0a
+#define NAU8825_REG_HSD_CTRL 0x0c
+#define NAU8825_REG_JACK_DET_CTRL 0x0d
+#define NAU8825_REG_INTERRUPT_MASK 0x0f
+#define NAU8825_REG_IRQ_STATUS 0x10
+#define NAU8825_REG_INT_CLR_KEY_STATUS 0x11
+#define NAU8825_REG_INTERRUPT_DIS_CTRL 0x12
+#define NAU8825_REG_SAR_CTRL 0x13
+#define NAU8825_REG_KEYDET_CTRL 0x14
+#define NAU8825_REG_VDET_THRESHOLD_1 0x15
+#define NAU8825_REG_VDET_THRESHOLD_2 0x16
+#define NAU8825_REG_VDET_THRESHOLD_3 0x17
+#define NAU8825_REG_VDET_THRESHOLD_4 0x18
+#define NAU8825_REG_GPIO34_CTRL 0x19
+#define NAU8825_REG_GPIO12_CTRL 0x1a
+#define NAU8825_REG_TDM_CTRL 0x1b
+#define NAU8825_REG_I2S_PCM_CTRL1 0x1c
+#define NAU8825_REG_I2S_PCM_CTRL2 0x1d
+#define NAU8825_REG_LEFT_TIME_SLOT 0x1e
+#define NAU8825_REG_RIGHT_TIME_SLOT 0x1f
+#define NAU8825_REG_BIQ_CTRL 0x20
+#define NAU8825_REG_BIQ_COF1 0x21
+#define NAU8825_REG_BIQ_COF2 0x22
+#define NAU8825_REG_BIQ_COF3 0x23
+#define NAU8825_REG_BIQ_COF4 0x24
+#define NAU8825_REG_BIQ_COF5 0x25
+#define NAU8825_REG_BIQ_COF6 0x26
+#define NAU8825_REG_BIQ_COF7 0x27
+#define NAU8825_REG_BIQ_COF8 0x28
+#define NAU8825_REG_BIQ_COF9 0x29
+#define NAU8825_REG_BIQ_COF10 0x2a
+#define NAU8825_REG_ADC_RATE 0x2b
+#define NAU8825_REG_DAC_CTRL1 0x2c
+#define NAU8825_REG_DAC_CTRL2 0x2d
+#define NAU8825_REG_DAC_DGAIN_CTRL 0x2f
+#define NAU8825_REG_ADC_DGAIN_CTRL 0x30
+#define NAU8825_REG_MUTE_CTRL 0x31
+#define NAU8825_REG_HSVOL_CTRL 0x32
+#define NAU8825_REG_DACL_CTRL 0x33
+#define NAU8825_REG_DACR_CTRL 0x34
+#define NAU8825_REG_ADC_DRC_KNEE_IP12 0x38
+#define NAU8825_REG_ADC_DRC_KNEE_IP34 0x39
+#define NAU8825_REG_ADC_DRC_SLOPES 0x3a
+#define NAU8825_REG_ADC_DRC_ATKDCY 0x3b
+#define NAU8825_REG_DAC_DRC_KNEE_IP12 0x45
+#define NAU8825_REG_DAC_DRC_KNEE_IP34 0x46
+#define NAU8825_REG_DAC_DRC_SLOPES 0x47
+#define NAU8825_REG_DAC_DRC_ATKDCY 0x48
+#define NAU8825_REG_IMM_MODE_CTRL 0x4c
+#define NAU8825_REG_IMM_RMS_L 0x4d
+#define NAU8825_REG_IMM_RMS_R 0x4e
+#define NAU8825_REG_CLASSG_CTRL 0x50
+#define NAU8825_REG_OPT_EFUSE_CTRL 0x51
+#define NAU8825_REG_MISC_CTRL 0x55
+#define NAU8825_REG_I2C_DEVICE_ID 0x58
+#define NAU8825_REG_SARDOUT_RAM_STATUS 0x59
+#define NAU8825_REG_BIAS_ADJ 0x66
+#define NAU8825_REG_TRIM_SETTINGS 0x68
+#define NAU8825_REG_ANALOG_CONTROL_1 0x69
+#define NAU8825_REG_ANALOG_CONTROL_2 0x6a
+#define NAU8825_REG_ANALOG_ADC_1 0x71
+#define NAU8825_REG_ANALOG_ADC_2 0x72
+#define NAU8825_REG_RDAC 0x73
+#define NAU8825_REG_MIC_BIAS 0x74
+#define NAU8825_REG_BOOST 0x76
+#define NAU8825_REG_FEPGA 0x77
+#define NAU8825_REG_POWER_UP_CONTROL 0x7f
+#define NAU8825_REG_CHARGE_PUMP 0x80
+#define NAU8825_REG_CHARGE_PUMP_INPUT_READ 0x81
+#define NAU8825_REG_GENERAL_STATUS 0x82
+#define NAU8825_REG_MAX NAU8825_REG_GENERAL_STATUS
+
+/* ENA_CTRL (0x1) */
+#define NAU8825_ENABLE_DACR_SFT 10
+#define NAU8825_ENABLE_DACR (1 << NAU8825_ENABLE_DACR_SFT)
+#define NAU8825_ENABLE_DACL_SFT 9
+#define NAU8825_ENABLE_ADC_SFT 8
+#define NAU8825_ENABLE_SAR_SFT 1
+
+/* CLK_DIVIDER (0x3) */
+#define NAU8825_CLK_SRC_SFT 15
+#define NAU8825_CLK_SRC_MASK (1 << NAU8825_CLK_SRC_SFT)
+#define NAU8825_CLK_SRC_VCO (1 << NAU8825_CLK_SRC_SFT)
+#define NAU8825_CLK_SRC_MCLK (0 << NAU8825_CLK_SRC_SFT)
+#define NAU8825_CLK_MCLK_SRC_MASK (0xf << 0)
+
+/* FLL1 (0x04) */
+#define NAU8825_FLL_RATIO_MASK (0x7f << 0)
+
+/* FLL3 (0x06) */
+#define NAU8825_FLL_INTEGER_MASK (0x3ff << 0)
+
+/* FLL4 (0x07) */
+#define NAU8825_FLL_REF_DIV_MASK (0x3 << 10)
+
+/* FLL5 (0x08) */
+#define NAU8825_FLL_FILTER_SW_MASK (0x1 << 14)
+
+/* FLL6 (0x9) */
+#define NAU8825_DCO_EN_MASK (0x1 << 15)
+#define NAU8825_DCO_EN (0x1 << 15)
+#define NAU8825_DCO_DIS (0x0 << 15)
+#define NAU8825_SDM_EN_MASK (0x1 << 14)
+#define NAU8825_SDM_EN (0x1 << 14)
+#define NAU8825_SDM_DIS (0x0 << 14)
+
+/* HSD_CTRL (0xc) */
+#define NAU8825_HSD_AUTO_MODE (1 << 6)
+/* 0 - short to GND, 1 - open */
+#define NAU8825_SPKR_DWN1R (1 << 1)
+#define NAU8825_SPKR_DWN1L (1 << 0)
+
+/* JACK_DET_CTRL (0xd) */
+#define NAU8825_JACK_DET_RESTART (1 << 9)
+#define NAU8825_JACK_INSERT_DEBOUNCE_SFT 5
+#define NAU8825_JACK_INSERT_DEBOUNCE_MASK (0x7 << NAU8825_JACK_INSERT_DEBOUNCE_SFT)
+#define NAU8825_JACK_EJECT_DEBOUNCE_SFT 2
+#define NAU8825_JACK_EJECT_DEBOUNCE_MASK (0x7 << NAU8825_JACK_EJECT_DEBOUNCE_SFT)
+#define NAU8825_JACK_POLARITY (1 << 1) /* 0 - active low, 1 - active high */
+
+/* INTERRUPT_MASK (0xf) */
+#define NAU8825_IRQ_OUTPUT_EN (1 << 11)
+#define NAU8825_IRQ_HEADSET_COMPLETE_EN (1 << 10)
+#define NAU8825_IRQ_KEY_RELEASE_EN (1 << 7)
+#define NAU8825_IRQ_KEY_SHORT_PRESS_EN (1 << 5)
+#define NAU8825_IRQ_EJECT_EN (1 << 2)
+
+/* IRQ_STATUS (0x10) */
+#define NAU8825_HEADSET_COMPLETION_IRQ (1 << 10)
+#define NAU8825_SHORT_CIRCUIT_IRQ (1 << 9)
+#define NAU8825_IMPEDANCE_MEAS_IRQ (1 << 8)
+#define NAU8825_KEY_IRQ_MASK (0x7 << 5)
+#define NAU8825_KEY_RELEASE_IRQ (1 << 7)
+#define NAU8825_KEY_LONG_PRESS_IRQ (1 << 6)
+#define NAU8825_KEY_SHORT_PRESS_IRQ (1 << 5)
+#define NAU8825_MIC_DETECTION_IRQ (1 << 4)
+#define NAU8825_JACK_EJECTION_IRQ_MASK (3 << 2)
+#define NAU8825_JACK_EJECTION_DETECTED (1 << 2)
+#define NAU8825_JACK_INSERTION_IRQ_MASK (3 << 0)
+#define NAU8825_JACK_INSERTION_DETECTED (1 << 0)
+
+/* INTERRUPT_DIS_CTRL (0x12) */
+#define NAU8825_IRQ_HEADSET_COMPLETE_DIS (1 << 10)
+#define NAU8825_IRQ_KEY_RELEASE_DIS (1 << 7)
+#define NAU8825_IRQ_KEY_SHORT_PRESS_DIS (1 << 5)
+#define NAU8825_IRQ_EJECT_DIS (1 << 2)
+
+/* SAR_CTRL (0x13) */
+#define NAU8825_SAR_ADC_EN_SFT 12
+#define NAU8825_SAR_ADC_EN (1 << NAU8825_SAR_ADC_EN_SFT)
+#define NAU8825_SAR_INPUT_MASK (1 << 11)
+#define NAU8825_SAR_INPUT_JKSLV (1 << 11)
+#define NAU8825_SAR_INPUT_JKR2 (0 << 11)
+#define NAU8825_SAR_TRACKING_GAIN_SFT 8
+#define NAU8825_SAR_TRACKING_GAIN_MASK (0x7 << NAU8825_SAR_TRACKING_GAIN_SFT)
+#define NAU8825_SAR_COMPARE_TIME_SFT 2
+#define NAU8825_SAR_COMPARE_TIME_MASK (3 << 2)
+#define NAU8825_SAR_SAMPLING_TIME_SFT 0
+#define NAU8825_SAR_SAMPLING_TIME_MASK (3 << 0)
+
+/* KEYDET_CTRL (0x14) */
+#define NAU8825_KEYDET_SHORTKEY_DEBOUNCE_SFT 12
+#define NAU8825_KEYDET_SHORTKEY_DEBOUNCE_MASK (0x3 << NAU8825_KEYDET_SHORTKEY_DEBOUNCE_SFT)
+#define NAU8825_KEYDET_LEVELS_NR_SFT 8
+#define NAU8825_KEYDET_LEVELS_NR_MASK (0x7 << 8)
+#define NAU8825_KEYDET_HYSTERESIS_SFT 0
+#define NAU8825_KEYDET_HYSTERESIS_MASK 0xf
+
+/* GPIO12_CTRL (0x1a) */
+#define NAU8825_JKDET_PULL_UP (1 << 11) /* 0 - pull down, 1 - pull up */
+#define NAU8825_JKDET_PULL_EN (1 << 9) /* 0 - enable pull, 1 - disable */
+#define NAU8825_JKDET_OUTPUT_EN (1 << 8) /* 0 - enable input, 1 - enable output */
+
+/* I2S_PCM_CTRL1 (0x1c) */
+#define NAU8825_I2S_BP_SFT 7
+#define NAU8825_I2S_BP_MASK (1 << NAU8825_I2S_BP_SFT)
+#define NAU8825_I2S_BP_INV (1 << NAU8825_I2S_BP_SFT)
+#define NAU8825_I2S_PCMB_SFT 6
+#define NAU8825_I2S_PCMB_MASK (1 << NAU8825_I2S_PCMB_SFT)
+#define NAU8825_I2S_PCMB_EN (1 << NAU8825_I2S_PCMB_SFT)
+#define NAU8825_I2S_DL_SFT 2
+#define NAU8825_I2S_DL_MASK (0x3 << NAU8825_I2S_DL_SFT)
+#define NAU8825_I2S_DL_16 (0 << NAU8825_I2S_DL_SFT)
+#define NAU8825_I2S_DL_20 (1 << NAU8825_I2S_DL_SFT)
+#define NAU8825_I2S_DL_24 (2 << NAU8825_I2S_DL_SFT)
+#define NAU8825_I2S_DL_32 (3 << NAU8825_I2S_DL_SFT)
+#define NAU8825_I2S_DF_SFT 0
+#define NAU8825_I2S_DF_MASK (0x3 << NAU8825_I2S_DF_SFT)
+#define NAU8825_I2S_DF_RIGTH (0 << NAU8825_I2S_DF_SFT)
+#define NAU8825_I2S_DF_LEFT (1 << NAU8825_I2S_DF_SFT)
+#define NAU8825_I2S_DF_I2S (2 << NAU8825_I2S_DF_SFT)
+#define NAU8825_I2S_DF_PCM_AB (3 << NAU8825_I2S_DF_SFT)
+
+/* I2S_PCM_CTRL2 (0x1d) */
+#define NAU8825_I2S_TRISTATE (1 << 15) /* 0 - normal mode, 1 - Hi-Z output */
+#define NAU8825_I2S_MS_SFT 3
+#define NAU8825_I2S_MS_MASK (1 << NAU8825_I2S_MS_SFT)
+#define NAU8825_I2S_MS_MASTER (1 << NAU8825_I2S_MS_SFT)
+#define NAU8825_I2S_MS_SLAVE (0 << NAU8825_I2S_MS_SFT)
+
+/* ADC_RATE (0x2b) */
+#define NAU8825_ADC_SYNC_DOWN_SFT 0
+#define NAU8825_ADC_SYNC_DOWN_MASK 0x3
+#define NAU8825_ADC_SYNC_DOWN_32 0
+#define NAU8825_ADC_SYNC_DOWN_64 1
+#define NAU8825_ADC_SYNC_DOWN_128 2
+#define NAU8825_ADC_SYNC_DOWN_256 3
+
+/* DAC_CTRL1 (0x2c) */
+#define NAU8825_DAC_CLIP_OFF (1 << 7)
+#define NAU8825_DAC_OVERSAMPLE_SFT 0
+#define NAU8825_DAC_OVERSAMPLE_MASK 0x7
+#define NAU8825_DAC_OVERSAMPLE_64 0
+#define NAU8825_DAC_OVERSAMPLE_256 1
+#define NAU8825_DAC_OVERSAMPLE_128 2
+#define NAU8825_DAC_OVERSAMPLE_32 4
+
+/* MUTE_CTRL (0x31) */
+#define NAU8825_DAC_ZERO_CROSSING_EN (1 << 9)
+#define NAU8825_DAC_SOFT_MUTE (1 << 9)
+
+/* HSVOL_CTRL (0x32) */
+#define NAU8825_HP_MUTE (1 << 15)
+
+/* DACL_CTRL (0x33) */
+#define NAU8825_DACL_CH_SEL_SFT 9
+
+/* DACR_CTRL (0x34) */
+#define NAU8825_DACR_CH_SEL_SFT 9
+
+/* I2C_DEVICE_ID (0x58) */
+#define NAU8825_GPIO2JD1 (1 << 7)
+#define NAU8825_SOFTWARE_ID_MASK 0x3
+#define NAU8825_SOFTWARE_ID_NAU8825 0x0
+
+/* BIAS_ADJ (0x66) */
+#define NAU8825_BIAS_VMID (1 << 6)
+#define NAU8825_BIAS_VMID_SEL_SFT 4
+#define NAU8825_BIAS_VMID_SEL_MASK (3 << NAU8825_BIAS_VMID_SEL_SFT)
+
+/* ANALOG_CONTROL_2 (0x6a) */
+#define NAU8825_HP_NON_CLASSG_CURRENT_2xADJ (1 << 12)
+#define NAU8825_DAC_CAPACITOR_MSB (1 << 1)
+#define NAU8825_DAC_CAPACITOR_LSB (1 << 0)
+
+/* ANALOG_ADC_2 (0x72) */
+#define NAU8825_ADC_VREFSEL_MASK (0x3 << 8)
+#define NAU8825_ADC_VREFSEL_ANALOG (0 << 8)
+#define NAU8825_ADC_VREFSEL_VMID (1 << 8)
+#define NAU8825_ADC_VREFSEL_VMID_PLUS_0_5DB (2 << 8)
+#define NAU8825_ADC_VREFSEL_VMID_PLUS_1DB (3 << 8)
+#define NAU8825_POWERUP_ADCL (1 << 6)
+
+/* MIC_BIAS (0x74) */
+#define NAU8825_MICBIAS_JKSLV (1 << 14)
+#define NAU8825_MICBIAS_JKR2 (1 << 12)
+#define NAU8825_MICBIAS_POWERUP_SFT 8
+#define NAU8825_MICBIAS_VOLTAGE_SFT 0
+#define NAU8825_MICBIAS_VOLTAGE_MASK 0x7
+
+/* BOOST (0x76) */
+#define NAU8825_PRECHARGE_DIS (1 << 13)
+#define NAU8825_GLOBAL_BIAS_EN (1 << 12)
+#define NAU8825_HP_BOOST_G_DIS (1 << 8)
+#define NAU8825_SHORT_SHUTDOWN_EN (1 << 6)
+
+/* POWER_UP_CONTROL (0x7f) */
+#define NAU8825_POWERUP_INTEGR_R (1 << 5)
+#define NAU8825_POWERUP_INTEGR_L (1 << 4)
+#define NAU8825_POWERUP_DRV_IN_R (1 << 3)
+#define NAU8825_POWERUP_DRV_IN_L (1 << 2)
+#define NAU8825_POWERUP_HP_DRV_R (1 << 1)
+#define NAU8825_POWERUP_HP_DRV_L (1 << 0)
+
+/* CHARGE_PUMP (0x80) */
+#define NAU8825_JAMNODCLOW (1 << 10)
+#define NAU8825_POWER_DOWN_DACR (1 << 9)
+#define NAU8825_POWER_DOWN_DACL (1 << 8)
+#define NAU8825_CHANRGE_PUMP_EN (1 << 5)
+
+
+/* System Clock Source */
+enum {
+ NAU8825_CLK_MCLK = 0,
+ NAU8825_CLK_INTERNAL,
+};
+
+struct nau8825 {
+ struct device *dev;
+ struct regmap *regmap;
+ struct snd_soc_dapm_context *dapm;
+ struct snd_soc_jack *jack;
+ struct clk *mclk;
+ int irq;
+ int mclk_freq; /* 0 - mclk is disabled */
+ int button_pressed;
+ int micbias_voltage;
+ int vref_impedance;
+ bool jkdet_enable;
+ bool jkdet_pull_enable;
+ bool jkdet_pull_up;
+ int jkdet_polarity;
+ int sar_threshold_num;
+ int sar_threshold[8];
+ int sar_hysteresis;
+ int sar_voltage;
+ int sar_compare_time;
+ int sar_sampling_time;
+ int key_debounce;
+ int jack_insert_debounce;
+ int jack_eject_debounce;
+};
+
+int nau8825_enable_jack_detect(struct snd_soc_codec *codec,
+ struct snd_soc_jack *jack);
+
+
+#endif /* __NAU8825_H__ */
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