ASoC: nau8825: Add driver for headset chip Nuvoton 8825

Sponsored-by: Google Chromium project
Signed-off-by: NAnatol Pomozov <anatol.pomozov@gmail.com>
Signed-off-by: NMark Brown <broonie@kernel.org>

Documentation/devicetree/bindings/sound/nau8825.txt

+Nuvoton NAU8825 audio codec
+
+This device supports I2C only.
+
+Required properties:
+  - compatible : Must be "nuvoton,nau8825"
+
+  - reg : the I2C address of the device. This is either 0x1a (CSB=0) or 0x1b (CSB=1).
+
+Optional properties:
+  - nuvoton,jkdet-enable: Enable jack detection via JKDET pin.
+  - nuvoton,jkdet-pull-enable: Enable JKDET pin pull. If set - pin pull enabled,
+      otherwise pin in high impedance state.
+  - nuvoton,jkdet-pull-up: Pull-up JKDET pin. If set then JKDET pin is pull up, otherwise pull down.
+  - nuvoton,jkdet-polarity: JKDET pin polarity. 0 - active high, 1 - active low.
+
+  - nuvoton,vref-impedance: VREF Impedance selection
+      0 - Open
+      1 - 25 kOhm
+      2 - 125 kOhm
+      3 - 2.5 kOhm
+
+  - nuvoton,micbias-voltage: Micbias voltage level.
+      0 - VDDA
+      1 - VDDA
+      2 - VDDA * 1.1
+      3 - VDDA * 1.2
+      4 - VDDA * 1.3
+      5 - VDDA * 1.4
+      6 - VDDA * 1.53
+      7 - VDDA * 1.53
+
+  - nuvoton,sar-threshold-num: Number of buttons supported
+  - nuvoton,sar-threshold: Impedance threshold for each button. Array that contains up to 8 buttons configuration. SAR value is calculated as
+    SAR = 255 * MICBIAS / SAR_VOLTAGE * R / (2000 + R)
+    where MICBIAS is configured by 'nuvoton,micbias-voltage', SAR_VOLTAGE is configured by 'nuvoton,sar-voltage', R - button impedance.
+    Refer datasheet section 10.2 for more information about threshold calculation.
+
+  - nuvoton,sar-hysteresis: Button impedance measurement hysteresis.
+
+  - nuvoton,sar-voltage: Reference voltage for button impedance measurement.
+      0 - VDDA
+      1 - VDDA
+      2 - VDDA * 1.1
+      3 - VDDA * 1.2
+      4 - VDDA * 1.3
+      5 - VDDA * 1.4
+      6 - VDDA * 1.53
+      7 - VDDA * 1.53
+
+  - nuvoton,sar-compare-time: SAR compare time
+      0 - 500 ns
+      1 - 1 us
+      2 - 2 us
+      3 - 4 us
+
+  - nuvoton,sar-sampling-time: SAR sampling time
+      0 - 2 us
+      1 - 4 us
+      2 - 8 us
+      3 - 16 us
+
+  - nuvoton,short-key-debounce: Button short key press debounce time.
+      0 - 30 ms
+      1 - 50 ms
+      2 - 100 ms
+      3 - 30 ms
+
+  - nuvoton,jack-insert-debounce: number from 0 to 7 that sets debounce time to 2^(n+2) ms
+  - nuvoton,jack-eject-debounce: number from 0 to 7 that sets debounce time to 2^(n+2) ms
+
+  - clocks: list of phandle and clock specifier pairs according to common clock bindings for the
+      clocks described in clock-names
+  - clock-names: should include "mclk" for the MCLK master clock
+
+Example:
+
+  headset: nau8825@1a {
+      compatible = "nuvoton,nau8825";
+      reg = <0x1a>;
+      interrupt-parent = <&gpio>;
+      interrupts = <TEGRA_GPIO(E, 6) IRQ_TYPE_LEVEL_LOW>;
+      nuvoton,jkdet-enable;
+      nuvoton,jkdet-pull-enable;
+      nuvoton,jkdet-pull-up;
+      nuvoton,jkdet-polarity = <GPIO_ACTIVE_LOW>;
+      nuvoton,vref-impedance = <2>;
+      nuvoton,micbias-voltage = <6>;
+      // Setup 4 buttons impedance according to Android specification
+      nuvoton,sar-threshold-num = <4>;
+      nuvoton,sar-threshold = <0xc 0x1e 0x38 0x60>;
+      nuvoton,sar-hysteresis = <1>;
+      nuvoton,sar-voltage = <0>;
+      nuvoton,sar-compare-time = <0>;
+      nuvoton,sar-sampling-time = <0>;
+      nuvoton,short-key-debounce = <2>;
+      nuvoton,jack-insert-debounce = <7>;
+      nuvoton,jack-eject-debounce = <7>;
+
+      clock-names = "mclk";
+      clocks = <&tegra_car TEGRA210_CLK_CLK_OUT_2>;
+  };

sound/soc/codecs/Kconfig

@@ -79,6 +79,7 @@ config SND_SOC_ALL_CODECS
 	select SND_SOC_MAX9877 if I2C
 	select SND_SOC_MC13783 if MFD_MC13XXX
 	select SND_SOC_ML26124 if I2C
+	select SND_SOC_NAU8825 if I2C
 	select SND_SOC_PCM1681 if I2C
 	select SND_SOC_PCM1792A if SPI_MASTER
 	select SND_SOC_PCM3008
@@ -892,6 +893,9 @@ config SND_SOC_MC13783
 config SND_SOC_ML26124
 	tristate
 
+config SND_SOC_NAU8825
+	tristate
+
 config SND_SOC_TPA6130A2
 	tristate "Texas Instruments TPA6130A2 headphone amplifier"
 	depends on I2C

sound/soc/codecs/Makefile

@@ -72,6 +72,7 @@ snd-soc-max98925-objs := max98925.o
 snd-soc-max9850-objs := max9850.o
 snd-soc-mc13783-objs := mc13783.o
 snd-soc-ml26124-objs := ml26124.o
+snd-soc-nau8825-objs := nau8825.o
 snd-soc-pcm1681-objs := pcm1681.o
 snd-soc-pcm1792a-codec-objs := pcm1792a.o
 snd-soc-pcm3008-objs := pcm3008.o
@@ -263,6 +264,7 @@ obj-$(CONFIG_SND_SOC_MAX98925)	+= snd-soc-max98925.o
 obj-$(CONFIG_SND_SOC_MAX9850)	+= snd-soc-max9850.o
 obj-$(CONFIG_SND_SOC_MC13783)	+= snd-soc-mc13783.o
 obj-$(CONFIG_SND_SOC_ML26124)	+= snd-soc-ml26124.o
+obj-$(CONFIG_SND_SOC_NAU8825)   += snd-soc-nau8825.o
 obj-$(CONFIG_SND_SOC_PCM1681)	+= snd-soc-pcm1681.o
 obj-$(CONFIG_SND_SOC_PCM1792A)	+= snd-soc-pcm1792a-codec.o
 obj-$(CONFIG_SND_SOC_PCM3008)	+= snd-soc-pcm3008.o

sound/soc/codecs/nau8825.h

+/*
+ * 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)
+
+/* FLL6 (0x9) */
+#define NAU8825_DCO_EN	(1 << 15)
+
+/* 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__ */