diff options
Diffstat (limited to 'sound/soc/codecs/nau8824.c')
| -rw-r--r-- | sound/soc/codecs/nau8824.c | 1831 |
1 files changed, 1831 insertions, 0 deletions
diff --git a/sound/soc/codecs/nau8824.c b/sound/soc/codecs/nau8824.c new file mode 100644 index 000000000000..cca974d26136 --- /dev/null +++ b/sound/soc/codecs/nau8824.c @@ -0,0 +1,1831 @@ +/* + * NAU88L24 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. + */ + +#include <linux/module.h> +#include <linux/delay.h> +#include <linux/init.h> +#include <linux/i2c.h> +#include <linux/regmap.h> +#include <linux/slab.h> +#include <linux/clk.h> +#include <linux/acpi.h> +#include <linux/math64.h> +#include <linux/semaphore.h> + +#include <sound/initval.h> +#include <sound/tlv.h> +#include <sound/core.h> +#include <sound/pcm.h> +#include <sound/pcm_params.h> +#include <sound/soc.h> +#include <sound/jack.h> + +#include "nau8824.h" + + +static int nau8824_config_sysclk(struct nau8824 *nau8824, + int clk_id, unsigned int freq); +static bool nau8824_is_jack_inserted(struct nau8824 *nau8824); + +/* the ADC threshold of headset */ +#define DMIC_CLK 3072000 + +/* the ADC threshold of headset */ +#define HEADSET_SARADC_THD 0x80 + +/* the parameter threshold of FLL */ +#define NAU_FREF_MAX 13500000 +#define NAU_FVCO_MAX 124000000 +#define NAU_FVCO_MIN 90000000 + +/* scaling for mclk from sysclk_src output */ +static const struct nau8824_fll_attr mclk_src_scaling[] = { + { 1, 0x0 }, + { 2, 0x2 }, + { 4, 0x3 }, + { 8, 0x4 }, + { 16, 0x5 }, + { 32, 0x6 }, + { 3, 0x7 }, + { 6, 0xa }, + { 12, 0xb }, + { 24, 0xc }, +}; + +/* ratio for input clk freq */ +static const struct nau8824_fll_attr fll_ratio[] = { + { 512000, 0x01 }, + { 256000, 0x02 }, + { 128000, 0x04 }, + { 64000, 0x08 }, + { 32000, 0x10 }, + { 8000, 0x20 }, + { 4000, 0x40 }, +}; + +static const struct nau8824_fll_attr fll_pre_scalar[] = { + { 1, 0x0 }, + { 2, 0x1 }, + { 4, 0x2 }, + { 8, 0x3 }, +}; + +/* the maximum frequency of CLK_ADC and CLK_DAC */ +#define CLK_DA_AD_MAX 6144000 + +/* over sampling rate */ +static const struct nau8824_osr_attr osr_dac_sel[] = { + { 64, 2 }, /* OSR 64, SRC 1/4 */ + { 256, 0 }, /* OSR 256, SRC 1 */ + { 128, 1 }, /* OSR 128, SRC 1/2 */ + { 0, 0 }, + { 32, 3 }, /* OSR 32, SRC 1/8 */ +}; + +static const struct nau8824_osr_attr osr_adc_sel[] = { + { 32, 3 }, /* OSR 32, SRC 1/8 */ + { 64, 2 }, /* OSR 64, SRC 1/4 */ + { 128, 1 }, /* OSR 128, SRC 1/2 */ + { 256, 0 }, /* OSR 256, SRC 1 */ +}; + +static const struct reg_default nau8824_reg_defaults[] = { + { NAU8824_REG_ENA_CTRL, 0x0000 }, + { NAU8824_REG_CLK_GATING_ENA, 0x0000 }, + { NAU8824_REG_CLK_DIVIDER, 0x0000 }, + { NAU8824_REG_FLL1, 0x0000 }, + { NAU8824_REG_FLL2, 0x3126 }, + { NAU8824_REG_FLL3, 0x0008 }, + { NAU8824_REG_FLL4, 0x0010 }, + { NAU8824_REG_FLL5, 0xC000 }, + { NAU8824_REG_FLL6, 0x6000 }, + { NAU8824_REG_FLL_VCO_RSV, 0xF13C }, + { NAU8824_REG_JACK_DET_CTRL, 0x0000 }, + { NAU8824_REG_INTERRUPT_SETTING_1, 0x0000 }, + { NAU8824_REG_IRQ, 0x0000 }, + { NAU8824_REG_CLEAR_INT_REG, 0x0000 }, + { NAU8824_REG_INTERRUPT_SETTING, 0x1000 }, + { NAU8824_REG_SAR_ADC, 0x0015 }, + { NAU8824_REG_VDET_COEFFICIENT, 0x0110 }, + { NAU8824_REG_VDET_THRESHOLD_1, 0x0000 }, + { NAU8824_REG_VDET_THRESHOLD_2, 0x0000 }, + { NAU8824_REG_VDET_THRESHOLD_3, 0x0000 }, + { NAU8824_REG_VDET_THRESHOLD_4, 0x0000 }, + { NAU8824_REG_GPIO_SEL, 0x0000 }, + { NAU8824_REG_PORT0_I2S_PCM_CTRL_1, 0x000B }, + { NAU8824_REG_PORT0_I2S_PCM_CTRL_2, 0x0010 }, + { NAU8824_REG_PORT0_LEFT_TIME_SLOT, 0x0000 }, + { NAU8824_REG_PORT0_RIGHT_TIME_SLOT, 0x0000 }, + { NAU8824_REG_TDM_CTRL, 0x0000 }, + { NAU8824_REG_ADC_HPF_FILTER, 0x0000 }, + { NAU8824_REG_ADC_FILTER_CTRL, 0x0002 }, + { NAU8824_REG_DAC_FILTER_CTRL_1, 0x0000 }, + { NAU8824_REG_DAC_FILTER_CTRL_2, 0x0000 }, + { NAU8824_REG_NOTCH_FILTER_1, 0x0000 }, + { NAU8824_REG_NOTCH_FILTER_2, 0x0000 }, + { NAU8824_REG_EQ1_LOW, 0x112C }, + { NAU8824_REG_EQ2_EQ3, 0x2C2C }, + { NAU8824_REG_EQ4_EQ5, 0x2C2C }, + { NAU8824_REG_ADC_CH0_DGAIN_CTRL, 0x0100 }, + { NAU8824_REG_ADC_CH1_DGAIN_CTRL, 0x0100 }, + { NAU8824_REG_ADC_CH2_DGAIN_CTRL, 0x0100 }, + { NAU8824_REG_ADC_CH3_DGAIN_CTRL, 0x0100 }, + { NAU8824_REG_DAC_MUTE_CTRL, 0x0000 }, + { NAU8824_REG_DAC_CH0_DGAIN_CTRL, 0x0100 }, + { NAU8824_REG_DAC_CH1_DGAIN_CTRL, 0x0100 }, + { NAU8824_REG_ADC_TO_DAC_ST, 0x0000 }, + { NAU8824_REG_DRC_KNEE_IP12_ADC_CH01, 0x1486 }, + { NAU8824_REG_DRC_KNEE_IP34_ADC_CH01, 0x0F12 }, + { NAU8824_REG_DRC_SLOPE_ADC_CH01, 0x25FF }, + { NAU8824_REG_DRC_ATKDCY_ADC_CH01, 0x3457 }, + { NAU8824_REG_DRC_KNEE_IP12_ADC_CH23, 0x1486 }, + { NAU8824_REG_DRC_KNEE_IP34_ADC_CH23, 0x0F12 }, + { NAU8824_REG_DRC_SLOPE_ADC_CH23, 0x25FF }, + { NAU8824_REG_DRC_ATKDCY_ADC_CH23, 0x3457 }, + { NAU8824_REG_DRC_GAINL_ADC0, 0x0200 }, + { NAU8824_REG_DRC_GAINL_ADC1, 0x0200 }, + { NAU8824_REG_DRC_GAINL_ADC2, 0x0200 }, + { NAU8824_REG_DRC_GAINL_ADC3, 0x0200 }, + { NAU8824_REG_DRC_KNEE_IP12_DAC, 0x1486 }, + { NAU8824_REG_DRC_KNEE_IP34_DAC, 0x0F12 }, + { NAU8824_REG_DRC_SLOPE_DAC, 0x25F9 }, + { NAU8824_REG_DRC_ATKDCY_DAC, 0x3457 }, + { NAU8824_REG_DRC_GAIN_DAC_CH0, 0x0200 }, + { NAU8824_REG_DRC_GAIN_DAC_CH1, 0x0200 }, + { NAU8824_REG_MODE, 0x0000 }, + { NAU8824_REG_MODE1, 0x0000 }, + { NAU8824_REG_MODE2, 0x0000 }, + { NAU8824_REG_CLASSG, 0x0000 }, + { NAU8824_REG_OTP_EFUSE, 0x0000 }, + { NAU8824_REG_OTPDOUT_1, 0x0000 }, + { NAU8824_REG_OTPDOUT_2, 0x0000 }, + { NAU8824_REG_MISC_CTRL, 0x0000 }, + { NAU8824_REG_I2C_TIMEOUT, 0xEFFF }, + { NAU8824_REG_TEST_MODE, 0x0000 }, + { NAU8824_REG_I2C_DEVICE_ID, 0x1AF1 }, + { NAU8824_REG_SAR_ADC_DATA_OUT, 0x00FF }, + { NAU8824_REG_BIAS_ADJ, 0x0000 }, + { NAU8824_REG_PGA_GAIN, 0x0000 }, + { NAU8824_REG_TRIM_SETTINGS, 0x0000 }, + { NAU8824_REG_ANALOG_CONTROL_1, 0x0000 }, + { NAU8824_REG_ANALOG_CONTROL_2, 0x0000 }, + { NAU8824_REG_ENABLE_LO, 0x0000 }, + { NAU8824_REG_GAIN_LO, 0x0000 }, + { NAU8824_REG_CLASSD_GAIN_1, 0x0000 }, + { NAU8824_REG_CLASSD_GAIN_2, 0x0000 }, + { NAU8824_REG_ANALOG_ADC_1, 0x0011 }, + { NAU8824_REG_ANALOG_ADC_2, 0x0020 }, + { NAU8824_REG_RDAC, 0x0008 }, + { NAU8824_REG_MIC_BIAS, 0x0006 }, + { NAU8824_REG_HS_VOLUME_CONTROL, 0x0000 }, + { NAU8824_REG_BOOST, 0x0000 }, + { NAU8824_REG_FEPGA, 0x0000 }, + { NAU8824_REG_FEPGA_II, 0x0000 }, + { NAU8824_REG_FEPGA_SE, 0x0000 }, + { NAU8824_REG_FEPGA_ATTENUATION, 0x0000 }, + { NAU8824_REG_ATT_PORT0, 0x0000 }, + { NAU8824_REG_ATT_PORT1, 0x0000 }, + { NAU8824_REG_POWER_UP_CONTROL, 0x0000 }, + { NAU8824_REG_CHARGE_PUMP_CONTROL, 0x0300 }, + { NAU8824_REG_CHARGE_PUMP_INPUT, 0x0013 }, +}; + +static int nau8824_sema_acquire(struct nau8824 *nau8824, long timeout) +{ + int ret; + + if (timeout) { + ret = down_timeout(&nau8824->jd_sem, timeout); + if (ret < 0) + dev_warn(nau8824->dev, "Acquire semaphone timeout\n"); + } else { + ret = down_interruptible(&nau8824->jd_sem); + if (ret < 0) + dev_warn(nau8824->dev, "Acquire semaphone fail\n"); + } + + return ret; +} + +static inline void nau8824_sema_release(struct nau8824 *nau8824) +{ + up(&nau8824->jd_sem); +} + +static bool nau8824_readable_reg(struct device *dev, unsigned int reg) +{ + switch (reg) { + case NAU8824_REG_ENA_CTRL ... NAU8824_REG_FLL_VCO_RSV: + case NAU8824_REG_JACK_DET_CTRL: + case NAU8824_REG_INTERRUPT_SETTING_1: + case NAU8824_REG_IRQ: + case NAU8824_REG_CLEAR_INT_REG ... NAU8824_REG_VDET_THRESHOLD_4: + case NAU8824_REG_GPIO_SEL: + case NAU8824_REG_PORT0_I2S_PCM_CTRL_1 ... NAU8824_REG_TDM_CTRL: + case NAU8824_REG_ADC_HPF_FILTER ... NAU8824_REG_EQ4_EQ5: + case NAU8824_REG_ADC_CH0_DGAIN_CTRL ... NAU8824_REG_ADC_TO_DAC_ST: + case NAU8824_REG_DRC_KNEE_IP12_ADC_CH01 ... NAU8824_REG_DRC_GAINL_ADC3: + case NAU8824_REG_DRC_KNEE_IP12_DAC ... NAU8824_REG_DRC_GAIN_DAC_CH1: + case NAU8824_REG_CLASSG ... NAU8824_REG_OTP_EFUSE: + case NAU8824_REG_OTPDOUT_1 ... NAU8824_REG_OTPDOUT_2: + case NAU8824_REG_I2C_TIMEOUT: + case NAU8824_REG_I2C_DEVICE_ID ... NAU8824_REG_SAR_ADC_DATA_OUT: + case NAU8824_REG_BIAS_ADJ ... NAU8824_REG_CLASSD_GAIN_2: + case NAU8824_REG_ANALOG_ADC_1 ... NAU8824_REG_ATT_PORT1: + case NAU8824_REG_POWER_UP_CONTROL ... NAU8824_REG_CHARGE_PUMP_INPUT: + return true; + default: + return false; + } + +} + +static bool nau8824_writeable_reg(struct device *dev, unsigned int reg) +{ + switch (reg) { + case NAU8824_REG_RESET ... NAU8824_REG_FLL_VCO_RSV: + case NAU8824_REG_JACK_DET_CTRL: + case NAU8824_REG_INTERRUPT_SETTING_1: + case NAU8824_REG_CLEAR_INT_REG ... NAU8824_REG_VDET_THRESHOLD_4: + case NAU8824_REG_GPIO_SEL: + case NAU8824_REG_PORT0_I2S_PCM_CTRL_1 ... NAU8824_REG_TDM_CTRL: + case NAU8824_REG_ADC_HPF_FILTER ... NAU8824_REG_EQ4_EQ5: + case NAU8824_REG_ADC_CH0_DGAIN_CTRL ... NAU8824_REG_ADC_TO_DAC_ST: + case NAU8824_REG_DRC_KNEE_IP12_ADC_CH01: + case NAU8824_REG_DRC_KNEE_IP34_ADC_CH01: + case NAU8824_REG_DRC_SLOPE_ADC_CH01: + case NAU8824_REG_DRC_ATKDCY_ADC_CH01: + case NAU8824_REG_DRC_KNEE_IP12_ADC_CH23: + case NAU8824_REG_DRC_KNEE_IP34_ADC_CH23: + case NAU8824_REG_DRC_SLOPE_ADC_CH23: + case NAU8824_REG_DRC_ATKDCY_ADC_CH23: + case NAU8824_REG_DRC_KNEE_IP12_DAC ... NAU8824_REG_DRC_ATKDCY_DAC: + case NAU8824_REG_CLASSG ... NAU8824_REG_OTP_EFUSE: + case NAU8824_REG_I2C_TIMEOUT: + case NAU8824_REG_BIAS_ADJ ... NAU8824_REG_CLASSD_GAIN_2: + case NAU8824_REG_ANALOG_ADC_1 ... NAU8824_REG_ATT_PORT1: + case NAU8824_REG_POWER_UP_CONTROL ... NAU8824_REG_CHARGE_PUMP_CONTROL: + return true; + default: + return false; + } +} + +static bool nau8824_volatile_reg(struct device *dev, unsigned int reg) +{ + switch (reg) { + case NAU8824_REG_RESET: + case NAU8824_REG_IRQ ... NAU8824_REG_CLEAR_INT_REG: + case NAU8824_REG_DRC_GAINL_ADC0 ... NAU8824_REG_DRC_GAINL_ADC3: + case NAU8824_REG_DRC_GAIN_DAC_CH0 ... NAU8824_REG_DRC_GAIN_DAC_CH1: + case NAU8824_REG_OTPDOUT_1 ... NAU8824_REG_OTPDOUT_2: + case NAU8824_REG_I2C_DEVICE_ID ... NAU8824_REG_SAR_ADC_DATA_OUT: + case NAU8824_REG_CHARGE_PUMP_INPUT: + return true; + default: + return false; + } +} + +static const char * const nau8824_companding[] = { + "Off", "NC", "u-law", "A-law" }; + +static const struct soc_enum nau8824_companding_adc_enum = + SOC_ENUM_SINGLE(NAU8824_REG_PORT0_I2S_PCM_CTRL_1, 12, + ARRAY_SIZE(nau8824_companding), nau8824_companding); + +static const struct soc_enum nau8824_companding_dac_enum = + SOC_ENUM_SINGLE(NAU8824_REG_PORT0_I2S_PCM_CTRL_1, 14, + ARRAY_SIZE(nau8824_companding), nau8824_companding); + +static const char * const nau8824_adc_decimation[] = { + "32", "64", "128", "256" }; + +static const struct soc_enum nau8824_adc_decimation_enum = + SOC_ENUM_SINGLE(NAU8824_REG_ADC_FILTER_CTRL, 0, + ARRAY_SIZE(nau8824_adc_decimation), nau8824_adc_decimation); + +static const char * const nau8824_dac_oversampl[] = { + "64", "256", "128", "", "32" }; + +static const struct soc_enum nau8824_dac_oversampl_enum = + SOC_ENUM_SINGLE(NAU8824_REG_DAC_FILTER_CTRL_1, 0, + ARRAY_SIZE(nau8824_dac_oversampl), nau8824_dac_oversampl); + +static const char * const nau8824_input_channel[] = { + "Input CH0", "Input CH1", "Input CH2", "Input CH3" }; + +static const struct soc_enum nau8824_adc_ch0_enum = + SOC_ENUM_SINGLE(NAU8824_REG_ADC_CH0_DGAIN_CTRL, 9, + ARRAY_SIZE(nau8824_input_channel), nau8824_input_channel); + +static const struct soc_enum nau8824_adc_ch1_enum = + SOC_ENUM_SINGLE(NAU8824_REG_ADC_CH1_DGAIN_CTRL, 9, + ARRAY_SIZE(nau8824_input_channel), nau8824_input_channel); + +static const struct soc_enum nau8824_adc_ch2_enum = + SOC_ENUM_SINGLE(NAU8824_REG_ADC_CH2_DGAIN_CTRL, 9, + ARRAY_SIZE(nau8824_input_channel), nau8824_input_channel); + +static const struct soc_enum nau8824_adc_ch3_enum = + SOC_ENUM_SINGLE(NAU8824_REG_ADC_CH3_DGAIN_CTRL, 9, + ARRAY_SIZE(nau8824_input_channel), nau8824_input_channel); + +static const char * const nau8824_tdm_slot[] = { + "Slot 0", "Slot 1", "Slot 2", "Slot 3" }; + +static const struct soc_enum nau8824_dac_left_sel_enum = + SOC_ENUM_SINGLE(NAU8824_REG_TDM_CTRL, 6, + ARRAY_SIZE(nau8824_tdm_slot), nau8824_tdm_slot); + +static const struct soc_enum nau8824_dac_right_sel_enum = + SOC_ENUM_SINGLE(NAU8824_REG_TDM_CTRL, 4, + ARRAY_SIZE(nau8824_tdm_slot), nau8824_tdm_slot); + +static const DECLARE_TLV_DB_MINMAX_MUTE(spk_vol_tlv, 0, 2400); +static const DECLARE_TLV_DB_MINMAX(hp_vol_tlv, -3000, 0); +static const DECLARE_TLV_DB_SCALE(mic_vol_tlv, 0, 200, 0); +static const DECLARE_TLV_DB_SCALE(dmic_vol_tlv, -12800, 50, 0); + +static const struct snd_kcontrol_new nau8824_snd_controls[] = { + SOC_ENUM("ADC Companding", nau8824_companding_adc_enum), + SOC_ENUM("DAC Companding", nau8824_companding_dac_enum), + + SOC_ENUM("ADC Decimation Rate", nau8824_adc_decimation_enum), + SOC_ENUM("DAC Oversampling Rate", nau8824_dac_oversampl_enum), + + SOC_SINGLE_TLV("Speaker Right DACR Volume", + NAU8824_REG_CLASSD_GAIN_1, 8, 0x1f, 0, spk_vol_tlv), + SOC_SINGLE_TLV("Speaker Left DACL Volume", + NAU8824_REG_CLASSD_GAIN_2, 0, 0x1f, 0, spk_vol_tlv), + SOC_SINGLE_TLV("Speaker Left DACR Volume", + NAU8824_REG_CLASSD_GAIN_1, 0, 0x1f, 0, spk_vol_tlv), + SOC_SINGLE_TLV("Speaker Right DACL Volume", + NAU8824_REG_CLASSD_GAIN_2, 8, 0x1f, 0, spk_vol_tlv), + + SOC_SINGLE_TLV("Headphone Right DACR Volume", + NAU8824_REG_ATT_PORT0, 8, 0x1f, 0, hp_vol_tlv), + SOC_SINGLE_TLV("Headphone Left DACL Volume", + NAU8824_REG_ATT_PORT0, 0, 0x1f, 0, hp_vol_tlv), + SOC_SINGLE_TLV("Headphone Right DACL Volume", + NAU8824_REG_ATT_PORT1, 8, 0x1f, 0, hp_vol_tlv), + SOC_SINGLE_TLV("Headphone Left DACR Volume", + NAU8824_REG_ATT_PORT1, 0, 0x1f, 0, hp_vol_tlv), + + SOC_SINGLE_TLV("MIC1 Volume", NAU8824_REG_FEPGA_II, + NAU8824_FEPGA_GAINL_SFT, 0x12, 0, mic_vol_tlv), + SOC_SINGLE_TLV("MIC2 Volume", NAU8824_REG_FEPGA_II, + NAU8824_FEPGA_GAINR_SFT, 0x12, 0, mic_vol_tlv), + + SOC_SINGLE_TLV("DMIC1 Volume", NAU8824_REG_ADC_CH0_DGAIN_CTRL, + 0, 0x164, 0, dmic_vol_tlv), + SOC_SINGLE_TLV("DMIC2 Volume", NAU8824_REG_ADC_CH1_DGAIN_CTRL, + 0, 0x164, 0, dmic_vol_tlv), + SOC_SINGLE_TLV("DMIC3 Volume", NAU8824_REG_ADC_CH2_DGAIN_CTRL, + 0, 0x164, 0, dmic_vol_tlv), + SOC_SINGLE_TLV("DMIC4 Volume", NAU8824_REG_ADC_CH3_DGAIN_CTRL, + 0, 0x164, 0, dmic_vol_tlv), + + SOC_ENUM("ADC CH0 Select", nau8824_adc_ch0_enum), + SOC_ENUM("ADC CH1 Select", nau8824_adc_ch1_enum), + SOC_ENUM("ADC CH2 Select", nau8824_adc_ch2_enum), + SOC_ENUM("ADC CH3 Select", nau8824_adc_ch3_enum), + + SOC_SINGLE("ADC CH0 TX Switch", NAU8824_REG_TDM_CTRL, 0, 1, 0), + SOC_SINGLE("ADC CH1 TX Switch", NAU8824_REG_TDM_CTRL, 1, 1, 0), + SOC_SINGLE("ADC CH2 TX Switch", NAU8824_REG_TDM_CTRL, 2, 1, 0), + SOC_SINGLE("ADC CH3 TX Switch", NAU8824_REG_TDM_CTRL, 3, 1, 0), + + SOC_ENUM("DACL Channel Source", nau8824_dac_left_sel_enum), + SOC_ENUM("DACR Channel Source", nau8824_dac_right_sel_enum), + + SOC_SINGLE("DACL LR Mix", NAU8824_REG_DAC_MUTE_CTRL, 0, 1, 0), + SOC_SINGLE("DACR LR Mix", NAU8824_REG_DAC_MUTE_CTRL, 1, 1, 0), +}; + +static int nau8824_output_dac_event(struct snd_soc_dapm_widget *w, + struct snd_kcontrol *kcontrol, int event) +{ + struct snd_soc_codec *codec = snd_soc_dapm_to_codec(w->dapm); + struct nau8824 *nau8824 = snd_soc_codec_get_drvdata(codec); + + switch (event) { + case SND_SOC_DAPM_PRE_PMU: + /* Disables the TESTDAC to let DAC signal pass through. */ + regmap_update_bits(nau8824->regmap, NAU8824_REG_ENABLE_LO, + NAU8824_TEST_DAC_EN, 0); + break; + case SND_SOC_DAPM_POST_PMD: + regmap_update_bits(nau8824->regmap, NAU8824_REG_ENABLE_LO, + NAU8824_TEST_DAC_EN, NAU8824_TEST_DAC_EN); + break; + default: + return -EINVAL; + } + + return 0; +} + +static int nau8824_spk_event(struct snd_soc_dapm_widget *w, + struct snd_kcontrol *kcontrol, int event) +{ + struct snd_soc_codec *codec = snd_soc_dapm_to_codec(w->dapm); + struct nau8824 *nau8824 = snd_soc_codec_get_drvdata(codec); + + switch (event) { + case SND_SOC_DAPM_PRE_PMU: + regmap_update_bits(nau8824->regmap, + NAU8824_REG_ANALOG_CONTROL_2, + NAU8824_CLASSD_CLAMP_DIS, NAU8824_CLASSD_CLAMP_DIS); + break; + case SND_SOC_DAPM_POST_PMD: + regmap_update_bits(nau8824->regmap, + NAU8824_REG_ANALOG_CONTROL_2, + NAU8824_CLASSD_CLAMP_DIS, 0); + break; + default: + return -EINVAL; + } + + return 0; +} + +static int nau8824_pump_event(struct snd_soc_dapm_widget *w, + struct snd_kcontrol *kcontrol, int event) +{ + struct snd_soc_codec *codec = snd_soc_dapm_to_codec(w->dapm); + struct nau8824 *nau8824 = snd_soc_codec_get_drvdata(codec); + + switch (event) { + case SND_SOC_DAPM_POST_PMU: + /* Prevent startup click by letting charge pump to ramp up */ + msleep(10); + regmap_update_bits(nau8824->regmap, + NAU8824_REG_CHARGE_PUMP_CONTROL, + NAU8824_JAMNODCLOW, NAU8824_JAMNODCLOW); + break; + case SND_SOC_DAPM_PRE_PMD: + regmap_update_bits(nau8824->regmap, + NAU8824_REG_CHARGE_PUMP_CONTROL, + NAU8824_JAMNODCLOW, 0); + break; + default: + return -EINVAL; + } + + return 0; +} + +static int system_clock_control(struct snd_soc_dapm_widget *w, + struct snd_kcontrol *k, int event) +{ + struct snd_soc_codec *codec = snd_soc_dapm_to_codec(w->dapm); + struct nau8824 *nau8824 = snd_soc_codec_get_drvdata(codec); + + if (SND_SOC_DAPM_EVENT_OFF(event)) { + /* Set clock source to disable or internal clock before the + * playback or capture end. Codec needs clock for Jack + * detection and button press if jack inserted; otherwise, + * the clock should be closed. + */ + if (nau8824_is_jack_inserted(nau8824)) { + nau8824_config_sysclk(nau8824, + NAU8824_CLK_INTERNAL, 0); + } else { + nau8824_config_sysclk(nau8824, NAU8824_CLK_DIS, 0); + } + } + return 0; +} + +static int dmic_clock_control(struct snd_soc_dapm_widget *w, + struct snd_kcontrol *k, int event) +{ + struct snd_soc_codec *codec = snd_soc_dapm_to_codec(w->dapm); + struct nau8824 *nau8824 = snd_soc_codec_get_drvdata(codec); + int src; + + /* The DMIC clock is gotten from system clock (256fs) divided by + * DMIC_SRC (1, 2, 4, 8, 16, 32). The clock has to be equal or + * less than 3.072 MHz. + */ + for (src = 0; src < 5; src++) { + if ((0x1 << (8 - src)) * nau8824->fs <= DMIC_CLK) + break; + } + dev_dbg(nau8824->dev, "dmic src %d for mclk %d\n", src, nau8824->fs * 256); + regmap_update_bits(nau8824->regmap, NAU8824_REG_CLK_DIVIDER, + NAU8824_CLK_DMIC_SRC_MASK, (src << NAU8824_CLK_DMIC_SRC_SFT)); + + return 0; +} + +static const struct snd_kcontrol_new nau8824_adc_ch0_dmic = + SOC_DAPM_SINGLE("Switch", NAU8824_REG_ENA_CTRL, + NAU8824_ADC_CH0_DMIC_SFT, 1, 0); + +static const struct snd_kcontrol_new nau8824_adc_ch1_dmic = + SOC_DAPM_SINGLE("Switch", NAU8824_REG_ENA_CTRL, + NAU8824_ADC_CH1_DMIC_SFT, 1, 0); + +static const struct snd_kcontrol_new nau8824_adc_ch2_dmic = + SOC_DAPM_SINGLE("Switch", NAU8824_REG_ENA_CTRL, + NAU8824_ADC_CH2_DMIC_SFT, 1, 0); + +static const struct snd_kcontrol_new nau8824_adc_ch3_dmic = + SOC_DAPM_SINGLE("Switch", NAU8824_REG_ENA_CTRL, + NAU8824_ADC_CH3_DMIC_SFT, 1, 0); + +static const struct snd_kcontrol_new nau8824_adc_left_mixer[] = { + SOC_DAPM_SINGLE("MIC Switch", NAU8824_REG_FEPGA, + NAU8824_FEPGA_MODEL_MIC1_SFT, 1, 0), + SOC_DAPM_SINGLE("HSMIC Switch", NAU8824_REG_FEPGA, + NAU8824_FEPGA_MODEL_HSMIC_SFT, 1, 0), +}; + +static const struct snd_kcontrol_new nau8824_adc_right_mixer[] = { + SOC_DAPM_SINGLE("MIC Switch", NAU8824_REG_FEPGA, + NAU8824_FEPGA_MODER_MIC2_SFT, 1, 0), + SOC_DAPM_SINGLE("HSMIC Switch", NAU8824_REG_FEPGA, + NAU8824_FEPGA_MODER_HSMIC_SFT, 1, 0), +}; + +static const struct snd_kcontrol_new nau8824_hp_left_mixer[] = { + SOC_DAPM_SINGLE("DAC Right Switch", NAU8824_REG_ENABLE_LO, + NAU8824_DACR_HPL_EN_SFT, 1, 0), + SOC_DAPM_SINGLE("DAC Left Switch", NAU8824_REG_ENABLE_LO, + NAU8824_DACL_HPL_EN_SFT, 1, 0), +}; + +static const struct snd_kcontrol_new nau8824_hp_right_mixer[] = { + SOC_DAPM_SINGLE("DAC Left Switch", NAU8824_REG_ENABLE_LO, + NAU8824_DACL_HPR_EN_SFT, 1, 0), + SOC_DAPM_SINGLE("DAC Right Switch", NAU8824_REG_ENABLE_LO, + NAU8824_DACR_HPR_EN_SFT, 1, 0), +}; + +static const char * const nau8824_dac_src[] = { "DACL", "DACR" }; + +static SOC_ENUM_SINGLE_DECL( + nau8824_dacl_enum, NAU8824_REG_DAC_CH0_DGAIN_CTRL, + NAU8824_DAC_CH0_SEL_SFT, nau8824_dac_src); + +static SOC_ENUM_SINGLE_DECL( + nau8824_dacr_enum, NAU8824_REG_DAC_CH1_DGAIN_CTRL, + NAU8824_DAC_CH1_SEL_SFT, nau8824_dac_src); + +static const struct snd_kcontrol_new nau8824_dacl_mux = + SOC_DAPM_ENUM("DACL Source", nau8824_dacl_enum); + +static const struct snd_kcontrol_new nau8824_dacr_mux = + SOC_DAPM_ENUM("DACR Source", nau8824_dacr_enum); + + +static const struct snd_soc_dapm_widget nau8824_dapm_widgets[] = { + SND_SOC_DAPM_SUPPLY("System Clock", SND_SOC_NOPM, 0, 0, + system_clock_control, SND_SOC_DAPM_POST_PMD), + + SND_SOC_DAPM_INPUT("HSMIC1"), + SND_SOC_DAPM_INPUT("HSMIC2"), + SND_SOC_DAPM_INPUT("MIC1"), + SND_SOC_DAPM_INPUT("MIC2"), + SND_SOC_DAPM_INPUT("DMIC1"), + SND_SOC_DAPM_INPUT("DMIC2"), + SND_SOC_DAPM_INPUT("DMIC3"), + SND_SOC_DAPM_INPUT("DMIC4"), + + SND_SOC_DAPM_SUPPLY("SAR", NAU8824_REG_SAR_ADC, + NAU8824_SAR_ADC_EN_SFT, 0, NULL, 0), + SND_SOC_DAPM_SUPPLY("MICBIAS", NAU8824_REG_MIC_BIAS, + NAU8824_MICBIAS_POWERUP_SFT, 0, NULL, 0), + SND_SOC_DAPM_SUPPLY("DMIC12 Power", NAU8824_REG_BIAS_ADJ, + NAU8824_DMIC1_EN_SFT, 0, NULL, 0), + SND_SOC_DAPM_SUPPLY("DMIC34 Power", NAU8824_REG_BIAS_ADJ, + NAU8824_DMIC2_EN_SFT, 0, NULL, 0), + SND_SOC_DAPM_SUPPLY("DMIC Clock", SND_SOC_NOPM, 0, 0, + dmic_clock_control, SND_SOC_DAPM_POST_PMU), + + SND_SOC_DAPM_SWITCH("DMIC1 Enable", SND_SOC_NOPM, + 0, 0, &nau8824_adc_ch0_dmic), + SND_SOC_DAPM_SWITCH("DMIC2 Enable", SND_SOC_NOPM, + 0, 0, &nau8824_adc_ch1_dmic), + SND_SOC_DAPM_SWITCH("DMIC3 Enable", SND_SOC_NOPM, + 0, 0, &nau8824_adc_ch2_dmic), + SND_SOC_DAPM_SWITCH("DMIC4 Enable", SND_SOC_NOPM, + 0, 0, &nau8824_adc_ch3_dmic), + + SND_SOC_DAPM_MIXER("Left ADC", NAU8824_REG_POWER_UP_CONTROL, + 12, 0, nau8824_adc_left_mixer, + ARRAY_SIZE(nau8824_adc_left_mixer)), + SND_SOC_DAPM_MIXER("Right ADC", NAU8824_REG_POWER_UP_CONTROL, + 13, 0, nau8824_adc_right_mixer, + ARRAY_SIZE(nau8824_adc_right_mixer)), + + SND_SOC_DAPM_ADC("ADCL", NULL, NAU8824_REG_ANALOG_ADC_2, + NAU8824_ADCL_EN_SFT, 0), + SND_SOC_DAPM_ADC("ADCR", NULL, NAU8824_REG_ANALOG_ADC_2, + NAU8824_ADCR_EN_SFT, 0), + + SND_SOC_DAPM_AIF_OUT("AIFTX", "HiFi Capture", 0, SND_SOC_NOPM, 0, 0), + SND_SOC_DAPM_AIF_IN("AIFRX", "HiFi Playback", 0, SND_SOC_NOPM, 0, 0), + + SND_SOC_DAPM_DAC("DACL", NULL, NAU8824_REG_RDAC, + NAU8824_DACL_EN_SFT, 0), + SND_SOC_DAPM_SUPPLY("DACL Clock", NAU8824_REG_RDAC, + NAU8824_DACL_CLK_SFT, 0, NULL, 0), + SND_SOC_DAPM_DAC("DACR", NULL, NAU8824_REG_RDAC, + NAU8824_DACR_EN_SFT, 0), + SND_SOC_DAPM_SUPPLY("DACR Clock", NAU8824_REG_RDAC, + NAU8824_DACR_CLK_SFT, 0, NULL, 0), + + SND_SOC_DAPM_MUX("DACL Mux", SND_SOC_NOPM, 0, 0, &nau8824_dacl_mux), + SND_SOC_DAPM_MUX("DACR Mux", SND_SOC_NOPM, 0, 0, &nau8824_dacr_mux), + + SND_SOC_DAPM_PGA_S("Output DACL", 0, NAU8824_REG_CHARGE_PUMP_CONTROL, + 8, 1, nau8824_output_dac_event, + SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD), + SND_SOC_DAPM_PGA_S("Output DACR", 0, NAU8824_REG_CHARGE_PUMP_CONTROL, + 9, 1, nau8824_output_dac_event, + SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD), + + SND_SOC_DAPM_PGA_S("ClassD", 0, NAU8824_REG_CLASSD_GAIN_1, + NAU8824_CLASSD_EN_SFT, 0, nau8824_spk_event, + SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD), + + SND_SOC_DAPM_MIXER("Left Headphone", NAU8824_REG_CLASSG, + NAU8824_CLASSG_LDAC_EN_SFT, 0, nau8824_hp_left_mixer, + ARRAY_SIZE(nau8824_hp_left_mixer)), + SND_SOC_DAPM_MIXER("Right Headphone", NAU8824_REG_CLASSG, + NAU8824_CLASSG_RDAC_EN_SFT, 0, nau8824_hp_right_mixer, + ARRAY_SIZE(nau8824_hp_right_mixer)), + SND_SOC_DAPM_PGA_S("Charge Pump", 1, NAU8824_REG_CHARGE_PUMP_CONTROL, + NAU8824_CHARGE_PUMP_EN_SFT, 0, nau8824_pump_event, + SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD), + SND_SOC_DAPM_PGA("Output Driver L", + NAU8824_REG_POWER_UP_CONTROL, 3, 0, NULL, 0), + SND_SOC_DAPM_PGA("Output Driver R", + NAU8824_REG_POWER_UP_CONTROL, 2, 0, NULL, 0), + SND_SOC_DAPM_PGA("Main Driver L", + NAU8824_REG_POWER_UP_CONTROL, 1, 0, NULL, 0), + SND_SOC_DAPM_PGA("Main Driver R", + NAU8824_REG_POWER_UP_CONTROL, 0, 0, NULL, 0), + SND_SOC_DAPM_PGA("HP Boost Driver", NAU8824_REG_BOOST, + NAU8824_HP_BOOST_DIS_SFT, 1, NULL, 0), + SND_SOC_DAPM_PGA("Class G", NAU8824_REG_CLASSG, + NAU8824_CLASSG_EN_SFT, 0, NULL, 0), + + SND_SOC_DAPM_OUTPUT("SPKOUTL"), + SND_SOC_DAPM_OUTPUT("SPKOUTR"), + SND_SOC_DAPM_OUTPUT("HPOL"), + SND_SOC_DAPM_OUTPUT("HPOR"), +}; + +static const struct snd_soc_dapm_route nau8824_dapm_routes[] = { + {"DMIC1 Enable", "Switch", "DMIC1"}, + {"DMIC2 Enable", "Switch", "DMIC2"}, + {"DMIC3 Enable", "Switch", "DMIC3"}, + {"DMIC4 Enable", "Switch", "DMIC4"}, + + {"DMIC1", NULL, "DMIC12 Power"}, + {"DMIC2", NULL, "DMIC12 Power"}, + {"DMIC3", NULL, "DMIC34 Power"}, + {"DMIC4", NULL, "DMIC34 Power"}, + {"DMIC12 Power", NULL, "DMIC Clock"}, + {"DMIC34 Power", NULL, "DMIC Clock"}, + + {"Left ADC", "MIC Switch", "MIC1"}, + {"Left ADC", "HSMIC Switch", "HSMIC1"}, + {"Right ADC", "MIC Switch", "MIC2"}, + {"Right ADC", "HSMIC Switch", "HSMIC2"}, + + {"ADCL", NULL, "Left ADC"}, + {"ADCR", NULL, "Right ADC"}, + + {"AIFTX", NULL, "MICBIAS"}, + {"AIFTX", NULL, "ADCL"}, + {"AIFTX", NULL, "ADCR"}, + {"AIFTX", NULL, "DMIC1 Enable"}, + {"AIFTX", NULL, "DMIC2 Enable"}, + {"AIFTX", NULL, "DMIC3 Enable"}, + {"AIFTX", NULL, "DMIC4 Enable"}, + + {"AIFTX", NULL, "System Clock"}, + {"AIFRX", NULL, "System Clock"}, + + {"DACL", NULL, "AIFRX"}, + {"DACL", NULL, "DACL Clock"}, + {"DACR", NULL, "AIFRX"}, + {"DACR", NULL, "DACR Clock"}, + + {"DACL Mux", "DACL", "DACL"}, + {"DACL Mux", "DACR", "DACR"}, + {"DACR Mux", "DACL", "DACL"}, + {"DACR Mux", "DACR", "DACR"}, + + {"Output DACL", NULL, "DACL Mux"}, + {"Output DACR", NULL, "DACR Mux"}, + + {"ClassD", NULL, "Output DACL"}, + {"ClassD", NULL, "Output DACR"}, + + {"Left Headphone", "DAC Left Switch", "Output DACL"}, + {"Left Headphone", "DAC Right Switch", "Output DACR"}, + {"Right Headphone", "DAC Left Switch", "Output DACL"}, + {"Right Headphone", "DAC Right Switch", "Output DACR"}, + + {"Charge Pump", NULL, "Left Headphone"}, + {"Charge Pump", NULL, "Right Headphone"}, + {"Output Driver L", NULL, "Charge Pump"}, + {"Output Driver R", NULL, "Charge Pump"}, + {"Main Driver L", NULL, "Output Driver L"}, + {"Main Driver R", NULL, "Output Driver R"}, + {"Class G", NULL, "Main Driver L"}, + {"Class G", NULL, "Main Driver R"}, + {"HP Boost Driver", NULL, "Class G"}, + + {"SPKOUTL", NULL, "ClassD"}, + {"SPKOUTR", NULL, "ClassD"}, + {"HPOL", NULL, "HP Boost Driver"}, + {"HPOR", NULL, "HP Boost Driver"}, +}; + +static bool nau8824_is_jack_inserted(struct nau8824 *nau8824) +{ + struct snd_soc_jack *jack = nau8824->jack; + bool insert = FALSE; + + if (nau8824->irq && jack) + insert = jack->status & SND_JACK_HEADPHONE; + + return insert; +} + +static void nau8824_int_status_clear_all(struct regmap *regmap) +{ + int active_irq, clear_irq, i; + + /* Reset the intrruption status from rightmost bit if the corres- + * ponding irq event occurs. + */ + regmap_read(regmap, NAU8824_REG_IRQ, &active_irq); + for (i = 0; i < NAU8824_REG_DATA_LEN; i++) { + clear_irq = (0x1 << i); + if (active_irq & clear_irq) + regmap_write(regmap, + NAU8824_REG_CLEAR_INT_REG, clear_irq); + } +} + +static void nau8824_eject_jack(struct nau8824 *nau8824) +{ + struct snd_soc_dapm_context *dapm = nau8824->dapm; + struct regmap *regmap = nau8824->regmap; + + /* Clear all interruption status */ + nau8824_int_status_clear_all(regmap); + + snd_soc_dapm_disable_pin(dapm, "SAR"); + snd_soc_dapm_disable_pin(dapm, "MICBIAS"); + snd_soc_dapm_sync(dapm); + + /* Enable the insertion interruption, disable the ejection + * interruption, and then bypass de-bounce circuit. + */ + regmap_update_bits(regmap, NAU8824_REG_INTERRUPT_SETTING, + NAU8824_IRQ_KEY_RELEASE_DIS | NAU8824_IRQ_KEY_SHORT_PRESS_DIS | + NAU8824_IRQ_EJECT_DIS | NAU8824_IRQ_INSERT_DIS, + NAU8824_IRQ_KEY_RELEASE_DIS | NAU8824_IRQ_KEY_SHORT_PRESS_DIS | + NAU8824_IRQ_EJECT_DIS); + regmap_update_bits(regmap, NAU8824_REG_INTERRUPT_SETTING_1, + NAU8824_IRQ_INSERT_EN | NAU8824_IRQ_EJECT_EN, + NAU8824_IRQ_INSERT_EN); + regmap_update_bits(regmap, NAU8824_REG_ENA_CTRL, + NAU8824_JD_SLEEP_MODE, NAU8824_JD_SLEEP_MODE); + + /* Close clock for jack type detection at manual mode */ + nau8824_config_sysclk(nau8824, NAU8824_CLK_DIS, 0); +} + +static void nau8824_jdet_work(struct work_struct *work) +{ + struct nau8824 *nau8824 = container_of( + work, struct nau8824, jdet_work); + struct snd_soc_dapm_context *dapm = nau8824->dapm; + struct regmap *regmap = nau8824->regmap; + int adc_value, event = 0, event_mask = 0; + + snd_soc_dapm_force_enable_pin(dapm, "MICBIAS"); + snd_soc_dapm_force_enable_pin(dapm, "SAR"); + snd_soc_dapm_sync(dapm); + + msleep(100); + + regmap_read(regmap, NAU8824_REG_SAR_ADC_DATA_OUT, &adc_value); + adc_value = adc_value & NAU8824_SAR_ADC_DATA_MASK; + dev_dbg(nau8824->dev, "SAR ADC data 0x%02x\n", adc_value); + if (adc_value < HEADSET_SARADC_THD) { + event |= SND_JACK_HEADPHONE; + + snd_soc_dapm_disable_pin(dapm, "SAR"); + snd_soc_dapm_disable_pin(dapm, "MICBIAS"); + snd_soc_dapm_sync(dapm); + } else { + event |= SND_JACK_HEADSET; + } + event_mask |= SND_JACK_HEADSET; + snd_soc_jack_report(nau8824->jack, event, event_mask); + + nau8824_sema_release(nau8824); +} + +static void nau8824_setup_auto_irq(struct nau8824 *nau8824) +{ + struct regmap *regmap = nau8824->regmap; + + /* Enable jack ejection, short key press and release interruption. */ + regmap_update_bits(regmap, NAU8824_REG_INTERRUPT_SETTING_1, + NAU8824_IRQ_INSERT_EN | NAU8824_IRQ_EJECT_EN, + NAU8824_IRQ_EJECT_EN); + regmap_update_bits(regmap, NAU8824_REG_INTERRUPT_SETTING, + NAU8824_IRQ_EJECT_DIS | NAU8824_IRQ_KEY_RELEASE_DIS | + NAU8824_IRQ_KEY_SHORT_PRESS_DIS, 0); + /* Enable internal VCO needed for interruptions */ + nau8824_config_sysclk(nau8824, NAU8824_CLK_INTERNAL, 0); + regmap_update_bits(regmap, NAU8824_REG_ENA_CTRL, + NAU8824_JD_SLEEP_MODE, 0); +} + +static int nau8824_button_decode(int value) +{ + int buttons = 0; + + /* The chip supports up to 8 buttons, but ALSA defines + * only 6 buttons. + */ + if (value & BIT(0)) + buttons |= SND_JACK_BTN_0; + if (value & BIT(1)) + buttons |= SND_JACK_BTN_1; + if (value & BIT(2)) + buttons |= SND_JACK_BTN_2; + if (value & BIT(3)) + buttons |= SND_JACK_BTN_3; + if (value & BIT(4)) + buttons |= SND_JACK_BTN_4; + if (value & BIT(5)) + buttons |= SND_JACK_BTN_5; + + return buttons; +} + +#define NAU8824_BUTTONS (SND_JACK_BTN_0 | SND_JACK_BTN_1 | \ + SND_JACK_BTN_2 | SND_JACK_BTN_3) + +static irqreturn_t nau8824_interrupt(int irq, void *data) +{ + struct nau8824 *nau8824 = (struct nau8824 *)data; + struct regmap *regmap = nau8824->regmap; + int active_irq, clear_irq = 0, event = 0, event_mask = 0; + + if (regmap_read(regmap, NAU8824_REG_IRQ, &active_irq)) { + dev_err(nau8824->dev, "failed to read irq status\n"); + return IRQ_NONE; + } + dev_dbg(nau8824->dev, "IRQ %x\n", active_irq); + + if (active_irq & NAU8824_JACK_EJECTION_DETECTED) { + nau8824_eject_jack(nau8824); + event_mask |= SND_JACK_HEADSET; + clear_irq = NAU8824_JACK_EJECTION_DETECTED; + /* release semaphore held after resume, + * and cancel jack detection + */ + nau8824_sema_release(nau8824); + cancel_work_sync(&nau8824->jdet_work); + } else if (active_irq & NAU8824_KEY_SHORT_PRESS_IRQ) { + int key_status, button_pressed; + + regmap_read(regmap, NAU8824_REG_CLEAR_INT_REG, + &key_status); + + /* lower 8 bits of the register are for pressed keys */ + button_pressed = nau8824_button_decode(key_status); + + event |= button_pressed; + dev_dbg(nau8824->dev, "button %x pressed\n", event); + event_mask |= NAU8824_BUTTONS; + clear_irq = NAU8824_KEY_SHORT_PRESS_IRQ; + } else if (active_irq & NAU8824_KEY_RELEASE_IRQ) { + event_mask = NAU8824_BUTTONS; + clear_irq = NAU8824_KEY_RELEASE_IRQ; + } else if (active_irq & NAU8824_JACK_INSERTION_DETECTED) { + /* Turn off insertion interruption at manual mode */ + regmap_update_bits(regmap, + NAU8824_REG_INTERRUPT_SETTING, + NAU8824_IRQ_INSERT_DIS, + NAU8824_IRQ_INSERT_DIS); + regmap_update_bits(regmap, + NAU8824_REG_INTERRUPT_SETTING_1, + NAU8824_IRQ_INSERT_EN, 0); + /* detect microphone and jack type */ + cancel_work_sync(&nau8824->jdet_work); + schedule_work(&nau8824->jdet_work); + + /* Enable interruption for jack type detection at audo + * mode which can detect microphone and jack type. + */ + nau8824_setup_auto_irq(nau8824); + } + + if (!clear_irq) + clear_irq = active_irq; + /* clears the rightmost interruption */ + regmap_write(regmap, NAU8824_REG_CLEAR_INT_REG, clear_irq); + + if (event_mask) + snd_soc_jack_report(nau8824->jack, event, event_mask); + + return IRQ_HANDLED; +} + +static int nau8824_clock_check(struct nau8824 *nau8824, + int stream, int rate, int osr) +{ + int osrate; + + if (stream == SNDRV_PCM_STREAM_PLAYBACK) { + if (osr >= ARRAY_SIZE(osr_dac_sel)) + return -EINVAL; + osrate = osr_dac_sel[osr].osr; + } else { + if (osr >= ARRAY_SIZE(osr_adc_sel)) + return -EINVAL; + osrate = osr_adc_sel[osr].osr; + } + + if (!osrate || rate * osr > CLK_DA_AD_MAX) { + dev_err(nau8824->dev, "exceed the maximum frequency of CLK_ADC or CLK_DAC\n"); + return -EINVAL; + } + + return 0; +} + +static int nau8824_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 nau8824 *nau8824 = snd_soc_codec_get_drvdata(codec); + unsigned int val_len = 0, osr, ctrl_val, bclk_fs, bclk_div; + + nau8824_sema_acquire(nau8824, HZ); + + /* CLK_DAC or CLK_ADC = OSR * FS + * DAC or ADC clock frequency is defined as Over Sampling Rate (OSR) + * multiplied by the audio sample rate (Fs). Note that the OSR and Fs + * values must be selected such that the maximum frequency is less + * than 6.144 MHz. + */ + nau8824->fs = params_rate(params); + if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { + regmap_read(nau8824->regmap, + NAU8824_REG_DAC_FILTER_CTRL_1, &osr); + osr &= NAU8824_DAC_OVERSAMPLE_MASK; + if (nau8824_clock_check(nau8824, substream->stream, + nau8824->fs, osr)) + return -EINVAL; + regmap_update_bits(nau8824->regmap, NAU8824_REG_CLK_DIVIDER, + NAU8824_CLK_DAC_SRC_MASK, + osr_dac_sel[osr].clk_src << NAU8824_CLK_DAC_SRC_SFT); + } else { + regmap_read(nau8824->regmap, + NAU8824_REG_ADC_FILTER_CTRL, &osr); + osr &= NAU8824_ADC_SYNC_DOWN_MASK; + if (nau8824_clock_check(nau8824, substream->stream, + nau8824->fs, osr)) + return -EINVAL; + regmap_update_bits(nau8824->regmap, NAU8824_REG_CLK_DIVIDER, + NAU8824_CLK_ADC_SRC_MASK, + osr_adc_sel[osr].clk_src << NAU8824_CLK_ADC_SRC_SFT); + } + + /* make BCLK and LRC divde configuration if the codec as master. */ + regmap_read(nau8824->regmap, + NAU8824_REG_PORT0_I2S_PCM_CTRL_2, &ctrl_val); + if (ctrl_val & NAU8824_I2S_MS_MASTER) { + /* get the bclk and fs ratio */ + bclk_fs = snd_soc_params_to_bclk(params) / nau8824->fs; + if (bclk_fs <= 32) + bclk_div = 0x3; + else if (bclk_fs <= 64) + bclk_div = 0x2; + else if (bclk_fs <= 128) + bclk_div = 0x1; + else if (bclk_fs <= 256) + bclk_div = 0; + else + return -EINVAL; + regmap_update_bits(nau8824->regmap, + NAU8824_REG_PORT0_I2S_PCM_CTRL_2, + NAU8824_I2S_LRC_DIV_MASK | NAU8824_I2S_BLK_DIV_MASK, + (bclk_div << NAU8824_I2S_LRC_DIV_SFT) | bclk_div); + } + + switch (params_width(params)) { + case 16: + val_len |= NAU8824_I2S_DL_16; + break; + case 20: + val_len |= NAU8824_I2S_DL_20; + break; + case 24: + val_len |= NAU8824_I2S_DL_24; + break; + case 32: + val_len |= NAU8824_I2S_DL_32; + break; + default: + return -EINVAL; + } + + regmap_update_bits(nau8824->regmap, NAU8824_REG_PORT0_I2S_PCM_CTRL_1, + NAU8824_I2S_DL_MASK, val_len); + + nau8824_sema_release(nau8824); + + return 0; +} + +static int nau8824_set_fmt(struct snd_soc_dai *dai, unsigned int fmt) +{ + struct snd_soc_codec *codec = dai->codec; + struct nau8824 *nau8824 = snd_soc_codec_get_drvdata(codec); + unsigned int ctrl1_val = 0, ctrl2_val = 0; + + nau8824_sema_acquire(nau8824, HZ); + + switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { + case SND_SOC_DAIFMT_CBM_CFM: + ctrl2_val |= NAU8824_I2S_MS_MASTER; + break; + case SND_SOC_DAIFMT_CBS_CFS: + break; + default: + return -EINVAL; + } + + switch (fmt & SND_SOC_DAIFMT_INV_MASK) { + case SND_SOC_DAIFMT_NB_NF: + break; + case SND_SOC_DAIFMT_IB_NF: + ctrl1_val |= NAU8824_I2S_BP_INV; + break; + default: + return -EINVAL; + } + + switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { + case SND_SOC_DAIFMT_I2S: + ctrl1_val |= NAU8824_I2S_DF_I2S; + break; + case SND_SOC_DAIFMT_LEFT_J: + ctrl1_val |= NAU8824_I2S_DF_LEFT; + break; + case SND_SOC_DAIFMT_RIGHT_J: + ctrl1_val |= NAU8824_I2S_DF_RIGTH; + break; + case SND_SOC_DAIFMT_DSP_A: + ctrl1_val |= NAU8824_I2S_DF_PCM_AB; + break; + case SND_SOC_DAIFMT_DSP_B: + ctrl1_val |= NAU8824_I2S_DF_PCM_AB; + ctrl1_val |= NAU8824_I2S_PCMB_EN; + break; + default: + return -EINVAL; + } + + regmap_update_bits(nau8824->regmap, NAU8824_REG_PORT0_I2S_PCM_CTRL_1, + NAU8824_I2S_DF_MASK | NAU8824_I2S_BP_MASK | + NAU8824_I2S_PCMB_EN, ctrl1_val); + regmap_update_bits(nau8824->regmap, NAU8824_REG_PORT0_I2S_PCM_CTRL_2, + NAU8824_I2S_MS_MASK, ctrl2_val); + + nau8824_sema_release(nau8824); + + return 0; +} + +/** + * nau8824_calc_fll_param - Calculate FLL parameters. + * @fll_in: external clock provided to codec. + * @fs: sampling rate. + * @fll_param: Pointer to structure of FLL parameters. + * + * Calculate FLL parameters to configure codec. + * + * Returns 0 for success or negative error code. + */ +static int nau8824_calc_fll_param(unsigned int fll_in, + unsigned int fs, struct nau8824_fll *fll_param) +{ + u64 fvco, fvco_max; + unsigned int fref, i, fvco_sel; + + /* Ensure the reference clock frequency (FREF) is <= 13.5MHz by dividing + * freq_in by 1, 2, 4, or 8 using FLL pre-scalar. + * FREF = freq_in / NAU8824_FLL_REF_DIV_MASK + */ + for (i = 0; i < ARRAY_SIZE(fll_pre_scalar); i++) { + fref = fll_in / fll_pre_scalar[i].param; + if (fref <= NAU_FREF_MAX) + break; + } + if (i == ARRAY_SIZE(fll_pre_scalar)) + return -EINVAL; + fll_param->clk_ref_div = fll_pre_scalar[i].val; + + /* Choose the FLL ratio based on FREF */ + for (i = 0; i < ARRAY_SIZE(fll_ratio); i++) { + if (fref >= fll_ratio[i].param) + break; + } + if (i == ARRAY_SIZE(fll_ratio)) + return -EINVAL; + fll_param->ratio = fll_ratio[i].val; + + /* Calculate the frequency of DCO (FDCO) given freq_out = 256 * Fs. + * FDCO must be within the 90MHz - 124MHz or the FFL cannot be + * guaranteed across the full range of operation. + * FDCO = freq_out * 2 * mclk_src_scaling + */ + fvco_max = 0; + fvco_sel = ARRAY_SIZE(mclk_src_scaling); + for (i = 0; i < ARRAY_SIZE(mclk_src_scaling); i++) { + fvco = 256 * fs * 2 * mclk_src_scaling[i].param; + if (fvco > NAU_FVCO_MIN && fvco < NAU_FVCO_MAX && + fvco_max < fvco) { + fvco_max = fvco; + fvco_sel = i; + } + } + if (ARRAY_SIZE(mclk_src_scaling) == fvco_sel) + return -EINVAL; + fll_param->mclk_src = mclk_src_scaling[fvco_sel].val; + + /* Calculate the FLL 10-bit integer input and the FLL 16-bit fractional + * input based on FDCO, FREF and FLL ratio. + */ + fvco = div_u64(fvco_max << 16, fref * fll_param->ratio); + fll_param->fll_int = (fvco >> 16) & 0x3FF; + fll_param->fll_frac = fvco & 0xFFFF; + return 0; +} + +static void nau8824_fll_apply(struct regmap *regmap, + struct nau8824_fll *fll_param) +{ + regmap_update_bits(regmap, NAU8824_REG_CLK_DIVIDER, + NAU8824_CLK_SRC_MASK | NAU8824_CLK_MCLK_SRC_MASK, + NAU8824_CLK_SRC_MCLK | fll_param->mclk_src); + regmap_update_bits(regmap, NAU8824_REG_FLL1, + NAU8824_FLL_RATIO_MASK, fll_param->ratio); + /* FLL 16-bit fractional input */ + regmap_write(regmap, NAU8824_REG_FLL2, fll_param->fll_frac); + /* FLL 10-bit integer input */ + regmap_update_bits(regmap, NAU8824_REG_FLL3, + NAU8824_FLL_INTEGER_MASK, fll_param->fll_int); + /* FLL pre-scaler */ + regmap_update_bits(regmap, NAU8824_REG_FLL4, + NAU8824_FLL_REF_DIV_MASK, + fll_param->clk_ref_div << NAU8824_FLL_REF_DIV_SFT); + /* select divided VCO input */ + regmap_update_bits(regmap, NAU8824_REG_FLL5, + NAU8824_FLL_CLK_SW_MASK, NAU8824_FLL_CLK_SW_REF); + /* Disable free-running mode */ + regmap_update_bits(regmap, + NAU8824_REG_FLL6, NAU8824_DCO_EN, 0); + if (fll_param->fll_frac) { + regmap_update_bits(regmap, NAU8824_REG_FLL5, + NAU8824_FLL_PDB_DAC_EN | NAU8824_FLL_LOOP_FTR_EN | + NAU8824_FLL_FTR_SW_MASK, + NAU8824_FLL_PDB_DAC_EN | NAU8824_FLL_LOOP_FTR_EN | + NAU8824_FLL_FTR_SW_FILTER); + regmap_update_bits(regmap, NAU8824_REG_FLL6, + NAU8824_SDM_EN, NAU8824_SDM_EN); + } else { + regmap_update_bits(regmap, NAU8824_REG_FLL5, + NAU8824_FLL_PDB_DAC_EN | NAU8824_FLL_LOOP_FTR_EN | + NAU8824_FLL_FTR_SW_MASK, NAU8824_FLL_FTR_SW_ACCU); + regmap_update_bits(regmap, + NAU8824_REG_FLL6, NAU8824_SDM_EN, 0); + } +} + +/* freq_out must be 256*Fs in order to achieve the best performance */ +static int nau8824_set_pll(struct snd_soc_codec *codec, int pll_id, int source, + unsigned int freq_in, unsigned int freq_out) +{ + struct nau8824 *nau8824 = snd_soc_codec_get_drvdata(codec); + struct nau8824_fll fll_param; + int ret, fs; + + fs = freq_out / 256; + ret = nau8824_calc_fll_param(freq_in, fs, &fll_param); + if (ret < 0) { + dev_err(nau8824->dev, "Unsupported input clock %d\n", freq_in); + return ret; + } + dev_dbg(nau8824->dev, "mclk_src=%x ratio=%x fll_frac=%x fll_int=%x clk_ref_div=%x\n", + fll_param.mclk_src, fll_param.ratio, fll_param.fll_frac, + fll_param.fll_int, fll_param.clk_ref_div); + + nau8824_fll_apply(nau8824->regmap, &fll_param); + mdelay(2); + regmap_update_bits(nau8824->regmap, NAU8824_REG_CLK_DIVIDER, + NAU8824_CLK_SRC_MASK, NAU8824_CLK_SRC_VCO); + + return 0; +} + +static int nau8824_config_sysclk(struct nau8824 *nau8824, + int clk_id, unsigned int freq) +{ + struct regmap *regmap = nau8824->regmap; + + switch (clk_id) { + case NAU8824_CLK_DIS: + regmap_update_bits(regmap, NAU8824_REG_CLK_DIVIDER, + NAU8824_CLK_SRC_MASK, NAU8824_CLK_SRC_MCLK); + regmap_update_bits(regmap, NAU8824_REG_FLL6, + NAU8824_DCO_EN, 0); + break; + + case NAU8824_CLK_MCLK: + nau8824_sema_acquire(nau8824, HZ); + regmap_update_bits(regmap, NAU8824_REG_CLK_DIVIDER, + NAU8824_CLK_SRC_MASK, NAU8824_CLK_SRC_MCLK); + regmap_update_bits(regmap, NAU8824_REG_FLL6, + NAU8824_DCO_EN, 0); + nau8824_sema_release(nau8824); + break; + + case NAU8824_CLK_INTERNAL: + regmap_update_bits(regmap, NAU8824_REG_FLL6, + NAU8824_DCO_EN, NAU8824_DCO_EN); + regmap_update_bits(regmap, NAU8824_REG_CLK_DIVIDER, + NAU8824_CLK_SRC_MASK, NAU8824_CLK_SRC_VCO); + break; + + case NAU8824_CLK_FLL_MCLK: + nau8824_sema_acquire(nau8824, HZ); + regmap_update_bits(regmap, NAU8824_REG_FLL3, + NAU8824_FLL_CLK_SRC_MASK, NAU8824_FLL_CLK_SRC_MCLK); + nau8824_sema_release(nau8824); + break; + + case NAU8824_CLK_FLL_BLK: + nau8824_sema_acquire(nau8824, HZ); + regmap_update_bits(regmap, NAU8824_REG_FLL3, + NAU8824_FLL_CLK_SRC_MASK, NAU8824_FLL_CLK_SRC_BLK); + nau8824_sema_release(nau8824); + break; + + case NAU8824_CLK_FLL_FS: + nau8824_sema_acquire(nau8824, HZ); + regmap_update_bits(regmap, NAU8824_REG_FLL3, + NAU8824_FLL_CLK_SRC_MASK, NAU8824_FLL_CLK_SRC_FS); + nau8824_sema_release(nau8824); + break; + + default: + dev_err(nau8824->dev, "Invalid clock id (%d)\n", clk_id); + return -EINVAL; + } + + dev_dbg(nau8824->dev, "Sysclk is %dHz and clock id is %d\n", freq, + clk_id); + + return 0; +} + +static int nau8824_set_sysclk(struct snd_soc_codec *codec, + int clk_id, int source, unsigned int freq, int dir) +{ + struct nau8824 *nau8824 = snd_soc_codec_get_drvdata(codec); + + return nau8824_config_sysclk(nau8824, clk_id, freq); +} + +static void nau8824_resume_setup(struct nau8824 *nau8824) +{ + nau8824_config_sysclk(nau8824, NAU8824_CLK_DIS, 0); + if (nau8824->irq) { + /* Clear all interruption status */ + nau8824_int_status_clear_all(nau8824->regmap); + /* Enable jack detection at sleep mode, insertion detection, + * and ejection detection. + */ + regmap_update_bits(nau8824->regmap, NAU8824_REG_ENA_CTRL, + NAU8824_JD_SLEEP_MODE, NAU8824_JD_SLEEP_MODE); + regmap_update_bits(nau8824->regmap, + NAU8824_REG_INTERRUPT_SETTING_1, + NAU8824_IRQ_EJECT_EN | NAU8824_IRQ_INSERT_EN, + NAU8824_IRQ_EJECT_EN | NAU8824_IRQ_INSERT_EN); + regmap_update_bits(nau8824->regmap, + NAU8824_REG_INTERRUPT_SETTING, + NAU8824_IRQ_EJECT_DIS | NAU8824_IRQ_INSERT_DIS, 0); + } +} + +static int nau8824_set_bias_level(struct snd_soc_codec *codec, + enum snd_soc_bias_level level) +{ + struct nau8824 *nau8824 = snd_soc_codec_get_drvdata(codec); + + switch (level) { + case SND_SOC_BIAS_ON: + break; + + case SND_SOC_BIAS_PREPARE: + break; + + case SND_SOC_BIAS_STANDBY: + if (snd_soc_codec_get_bias_level(codec) == SND_SOC_BIAS_OFF) { + /* Setup codec configuration after resume */ + nau8824_resume_setup(nau8824); + } + break; + + case SND_SOC_BIAS_OFF: + regmap_update_bits(nau8824->regmap, + NAU8824_REG_INTERRUPT_SETTING, 0x3ff, 0x3ff); + regmap_update_bits(nau8824->regmap, + NAU8824_REG_INTERRUPT_SETTING_1, + NAU8824_IRQ_EJECT_EN | NAU8824_IRQ_INSERT_EN, 0); + break; + } + + return 0; +} + +static int nau8824_codec_probe(struct snd_soc_codec *codec) +{ + struct nau8824 *nau8824 = snd_soc_codec_get_drvdata(codec); + struct snd_soc_dapm_context *dapm = snd_soc_codec_get_dapm(codec); + + nau8824->dapm = dapm; + + return 0; +} + +static int __maybe_unused nau8824_suspend(struct snd_soc_codec *codec) +{ + struct nau8824 *nau8824 = snd_soc_codec_get_drvdata(codec); + + if (nau8824->irq) { + disable_irq(nau8824->irq); + snd_soc_codec_force_bias_level(codec, SND_SOC_BIAS_OFF); + } + regcache_cache_only(nau8824->regmap, true); + regcache_mark_dirty(nau8824->regmap); + + return 0; +} + +static int __maybe_unused nau8824_resume(struct snd_soc_codec *codec) +{ + struct nau8824 *nau8824 = snd_soc_codec_get_drvdata(codec); + + regcache_cache_only(nau8824->regmap, false); + regcache_sync(nau8824->regmap); + if (nau8824->irq) { + /* Hold semaphore to postpone playback happening + * until jack detection done. + */ + nau8824_sema_acquire(nau8824, 0); + enable_irq(nau8824->irq); + } + + return 0; +} + +static struct snd_soc_codec_driver nau8824_codec_driver = { + .probe = nau8824_codec_probe, + .set_sysclk = nau8824_set_sysclk, + .set_pll = nau8824_set_pll, + .set_bias_level = nau8824_set_bias_level, + .suspend = nau8824_suspend, + .resume = nau8824_resume, + .suspend_bias_off = true, + + .component_driver = { + .controls = nau8824_snd_controls, + .num_controls = ARRAY_SIZE(nau8824_snd_controls), + .dapm_widgets = nau8824_dapm_widgets, + .num_dapm_widgets = ARRAY_SIZE(nau8824_dapm_widgets), + .dapm_routes = nau8824_dapm_routes, + .num_dapm_routes = ARRAY_SIZE(nau8824_dapm_routes), + }, +}; + +static const struct snd_soc_dai_ops nau8824_dai_ops = { + .hw_params = nau8824_hw_params, + .set_fmt = nau8824_set_fmt, +}; + +#define NAU8824_RATES SNDRV_PCM_RATE_8000_192000 +#define NAU8824_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE \ + | SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_S32_LE) + +static struct snd_soc_dai_driver nau8824_dai = { + .name = NAU8824_CODEC_DAI, + .playback = { + .stream_name = "Playback", + .channels_min = 1, + .channels_max = 2, + .rates = NAU8824_RATES, + .formats = NAU8824_FORMATS, + }, + .capture = { + .stream_name = "Capture", + .channels_min = 1, + .channels_max = 2, + .rates = NAU8824_RATES, + .formats = NAU8824_FORMATS, + }, + .ops = &nau8824_dai_ops, +}; + +static const struct regmap_config nau8824_regmap_config = { + .val_bits = NAU8824_REG_ADDR_LEN, + .reg_bits = NAU8824_REG_DATA_LEN, + + .max_register = NAU8824_REG_MAX, + .readable_reg = nau8824_readable_reg, + .writeable_reg = nau8824_writeable_reg, + .volatile_reg = nau8824_volatile_reg, + + .cache_type = REGCACHE_RBTREE, + .reg_defaults = nau8824_reg_defaults, + .num_reg_defaults = ARRAY_SIZE(nau8824_reg_defaults), +}; + +/** + * nau8824_enable_jack_detect - Specify a jack for event reporting + * + * @component: component to register the jack with + * @jack: jack to use to report headset and button events on + * + * After this function has been called the headset insert/remove and button + * events will be routed to the given jack. Jack can be null to stop + * reporting. + */ +int nau8824_enable_jack_detect(struct snd_soc_codec *codec, + struct snd_soc_jack *jack) +{ + struct nau8824 *nau8824 = snd_soc_codec_get_drvdata(codec); + int ret; + + nau8824->jack = jack; + /* Initiate jack detection work queue */ + INIT_WORK(&nau8824->jdet_work, nau8824_jdet_work); + ret = devm_request_threaded_irq(nau8824->dev, nau8824->irq, NULL, + nau8824_interrupt, IRQF_TRIGGER_LOW | IRQF_ONESHOT, + "nau8824", nau8824); + if (ret) { + dev_err(nau8824->dev, "Cannot request irq %d (%d)\n", + nau8824->irq, ret); + } + + return ret; +} +EXPORT_SYMBOL_GPL(nau8824_enable_jack_detect); + +static void nau8824_reset_chip(struct regmap *regmap) +{ + regmap_write(regmap, NAU8824_REG_RESET, 0x00); + regmap_write(regmap, NAU8824_REG_RESET, 0x00); +} + +static void nau8824_setup_buttons(struct nau8824 *nau8824) +{ + struct regmap *regmap = nau8824->regmap; + + regmap_update_bits(regmap, NAU8824_REG_SAR_ADC, + NAU8824_SAR_TRACKING_GAIN_MASK, + nau8824->sar_voltage << NAU8824_SAR_TRACKING_GAIN_SFT); + regmap_update_bits(regmap, NAU8824_REG_SAR_ADC, + NAU8824_SAR_COMPARE_TIME_MASK, + nau8824->sar_compare_time << NAU8824_SAR_COMPARE_TIME_SFT); + regmap_update_bits(regmap, NAU8824_REG_SAR_ADC, + NAU8824_SAR_SAMPLING_TIME_MASK, + nau8824->sar_sampling_time << NAU8824_SAR_SAMPLING_TIME_SFT); + + regmap_update_bits(regmap, NAU8824_REG_VDET_COEFFICIENT, + NAU8824_LEVELS_NR_MASK, + (nau8824->sar_threshold_num - 1) << NAU8824_LEVELS_NR_SFT); + regmap_update_bits(regmap, NAU8824_REG_VDET_COEFFICIENT, + NAU8824_HYSTERESIS_MASK, + nau8824->sar_hysteresis << NAU8824_HYSTERESIS_SFT); + regmap_update_bits(regmap, NAU8824_REG_VDET_COEFFICIENT, + NAU8824_SHORTKEY_DEBOUNCE_MASK, + nau8824->key_debounce << NAU8824_SHORTKEY_DEBOUNCE_SFT); + + regmap_write(regmap, NAU8824_REG_VDET_THRESHOLD_1, + (nau8824->sar_threshold[0] << 8) | nau8824->sar_threshold[1]); + regmap_write(regmap, NAU8824_REG_VDET_THRESHOLD_2, + (nau8824->sar_threshold[2] << 8) | nau8824->sar_threshold[3]); + regmap_write(regmap, NAU8824_REG_VDET_THRESHOLD_3, + (nau8824->sar_threshold[4] << 8) | nau8824->sar_threshold[5]); + regmap_write(regmap, NAU8824_REG_VDET_THRESHOLD_4, + (nau8824->sar_threshold[6] << 8) | nau8824->sar_threshold[7]); +} + +static void nau8824_init_regs(struct nau8824 *nau8824) +{ + struct regmap *regmap = nau8824->regmap; + + /* Enable Bias/VMID/VMID Tieoff */ + regmap_update_bits(regmap, NAU8824_REG_BIAS_ADJ, + NAU8824_VMID | NAU8824_VMID_SEL_MASK, NAU8824_VMID | + (nau8824->vref_impedance << NAU8824_VMID_SEL_SFT)); + regmap_update_bits(regmap, NAU8824_REG_BOOST, + NAU8824_GLOBAL_BIAS_EN, NAU8824_GLOBAL_BIAS_EN); + mdelay(2); + regmap_update_bits(regmap, NAU8824_REG_MIC_BIAS, + NAU8824_MICBIAS_VOLTAGE_MASK, nau8824->micbias_voltage); + /* Disable Boost Driver, Automatic Short circuit protection enable */ + regmap_update_bits(regmap, NAU8824_REG_BOOST, + NAU8824_PRECHARGE_DIS | NAU8824_HP_BOOST_DIS | + NAU8824_HP_BOOST_G_DIS | NAU8824_SHORT_SHUTDOWN_EN, + NAU8824_PRECHARGE_DIS | NAU8824_HP_BOOST_DIS | + NAU8824_HP_BOOST_G_DIS | NAU8824_SHORT_SHUTDOWN_EN); + /* Scaling for ADC and DAC clock */ + regmap_update_bits(regmap, NAU8824_REG_CLK_DIVIDER, + NAU8824_CLK_ADC_SRC_MASK | NAU8824_CLK_DAC_SRC_MASK, + (0x1 << NAU8824_CLK_ADC_SRC_SFT) | + (0x1 << NAU8824_CLK_DAC_SRC_SFT)); + regmap_update_bits(regmap, NAU8824_REG_DAC_MUTE_CTRL, + NAU8824_DAC_ZC_EN, NAU8824_DAC_ZC_EN); + regmap_update_bits(regmap, NAU8824_REG_ENA_CTRL, + NAU8824_DAC_CH1_EN | NAU8824_DAC_CH0_EN | + NAU8824_ADC_CH0_EN | NAU8824_ADC_CH1_EN | + NAU8824_ADC_CH2_EN | NAU8824_ADC_CH3_EN, + NAU8824_DAC_CH1_EN | NAU8824_DAC_CH0_EN | + NAU8824_ADC_CH0_EN | NAU8824_ADC_CH1_EN | + NAU8824_ADC_CH2_EN | NAU8824_ADC_CH3_EN); + regmap_update_bits(regmap, NAU8824_REG_CLK_GATING_ENA, + NAU8824_CLK_ADC_CH23_EN | NAU8824_CLK_ADC_CH01_EN | + NAU8824_CLK_DAC_CH1_EN | NAU8824_CLK_DAC_CH0_EN | + NAU8824_CLK_I2S_EN | NAU8824_CLK_GAIN_EN | + NAU8824_CLK_SAR_EN | NAU8824_CLK_DMIC_CH23_EN, + NAU8824_CLK_ADC_CH23_EN | NAU8824_CLK_ADC_CH01_EN | + NAU8824_CLK_DAC_CH1_EN | NAU8824_CLK_DAC_CH0_EN | + NAU8824_CLK_I2S_EN | NAU8824_CLK_GAIN_EN | + NAU8824_CLK_SAR_EN | NAU8824_CLK_DMIC_CH23_EN); + /* Class G timer 64ms */ + regmap_update_bits(regmap, NAU8824_REG_CLASSG, + NAU8824_CLASSG_TIMER_MASK, + 0x20 << NAU8824_CLASSG_TIMER_SFT); + regmap_update_bits(regmap, NAU8824_REG_TRIM_SETTINGS, + NAU8824_DRV_CURR_INC, NAU8824_DRV_CURR_INC); + /* Disable DACR/L power */ + regmap_update_bits(regmap, NAU8824_REG_CHARGE_PUMP_CONTROL, + NAU8824_SPKR_PULL_DOWN | NAU8824_SPKL_PULL_DOWN | + NAU8824_POWER_DOWN_DACR | NAU8824_POWER_DOWN_DACL, + NAU8824_SPKR_PULL_DOWN | NAU8824_SPKL_PULL_DOWN | + NAU8824_POWER_DOWN_DACR | NAU8824_POWER_DOWN_DACL); + /* Enable TESTDAC. This sets the analog DAC inputs to a '0' input + * signal to avoid any glitches due to power up transients in both + * the analog and digital DAC circuit. + */ + regmap_update_bits(regmap, NAU8824_REG_ENABLE_LO, + NAU8824_TEST_DAC_EN, NAU8824_TEST_DAC_EN); + /* Config L/R channel */ + regmap_update_bits(regmap, NAU8824_REG_DAC_CH0_DGAIN_CTRL, + NAU8824_DAC_CH0_SEL_MASK, NAU8824_DAC_CH0_SEL_I2S0); + regmap_update_bits(regmap, NAU8824_REG_DAC_CH1_DGAIN_CTRL, + NAU8824_DAC_CH1_SEL_MASK, NAU8824_DAC_CH1_SEL_I2S1); + regmap_update_bits(regmap, NAU8824_REG_ENABLE_LO, + NAU8824_DACR_HPR_EN | NAU8824_DACL_HPL_EN, + NAU8824_DACR_HPR_EN | NAU8824_DACL_HPL_EN); + /* Default oversampling/decimations settings are unusable + * (audible hiss). Set it to something better. + */ + regmap_update_bits(regmap, NAU8824_REG_ADC_FILTER_CTRL, + NAU8824_ADC_SYNC_DOWN_MASK, NAU8824_ADC_SYNC_DOWN_64); + regmap_update_bits(regmap, NAU8824_REG_DAC_FILTER_CTRL_1, + NAU8824_DAC_CICCLP_OFF | NAU8824_DAC_OVERSAMPLE_MASK, + NAU8824_DAC_CICCLP_OFF | NAU8824_DAC_OVERSAMPLE_64); + /* DAC clock delay 2ns, VREF */ + regmap_update_bits(regmap, NAU8824_REG_RDAC, + NAU8824_RDAC_CLK_DELAY_MASK | NAU8824_RDAC_VREF_MASK, + (0x2 << NAU8824_RDAC_CLK_DELAY_SFT) | + (0x3 << NAU8824_RDAC_VREF_SFT)); + /* PGA input mode selection */ + regmap_update_bits(regmap, NAU8824_REG_FEPGA, + NAU8824_FEPGA_MODEL_SHORT_EN | NAU8824_FEPGA_MODER_SHORT_EN, + NAU8824_FEPGA_MODEL_SHORT_EN | NAU8824_FEPGA_MODER_SHORT_EN); + /* Digital microphone control */ + regmap_update_bits(regmap, NAU8824_REG_ANALOG_CONTROL_1, + NAU8824_DMIC_CLK_DRV_STRG | NAU8824_DMIC_CLK_SLEW_FAST, + NAU8824_DMIC_CLK_DRV_STRG | NAU8824_DMIC_CLK_SLEW_FAST); + regmap_update_bits(regmap, NAU8824_REG_JACK_DET_CTRL, + NAU8824_JACK_LOGIC, + /* jkdet_polarity - 1 is for active-low */ + nau8824->jkdet_polarity ? 0 : NAU8824_JACK_LOGIC); + regmap_update_bits(regmap, + NAU8824_REG_JACK_DET_CTRL, NAU8824_JACK_EJECT_DT_MASK, + (nau8824->jack_eject_debounce << NAU8824_JACK_EJECT_DT_SFT)); + if (nau8824->sar_threshold_num) + nau8824_setup_buttons(nau8824); +} + +static int nau8824_setup_irq(struct nau8824 *nau8824) +{ + /* Disable interruption before codec initiation done */ + regmap_update_bits(nau8824->regmap, NAU8824_REG_ENA_CTRL, + NAU8824_JD_SLEEP_MODE, NAU8824_JD_SLEEP_MODE); + regmap_update_bits(nau8824->regmap, + NAU8824_REG_INTERRUPT_SETTING, 0x3ff, 0x3ff); + regmap_update_bits(nau8824->regmap, NAU8824_REG_INTERRUPT_SETTING_1, + NAU8824_IRQ_EJECT_EN | NAU8824_IRQ_INSERT_EN, 0); + + return 0; +} + +static void nau8824_print_device_properties(struct nau8824 *nau8824) +{ + struct device *dev = nau8824->dev; + int i; + + dev_dbg(dev, "jkdet-polarity: %d\n", nau8824->jkdet_polarity); + dev_dbg(dev, "micbias-voltage: %d\n", nau8824->micbias_voltage); + dev_dbg(dev, "vref-impedance: %d\n", nau8824->vref_impedance); + + dev_dbg(dev, "sar-threshold-num: %d\n", nau8824->sar_threshold_num); + for (i = 0; i < nau8824->sar_threshold_num; i++) + dev_dbg(dev, "sar-threshold[%d]=%x\n", i, + nau8824->sar_threshold[i]); + + dev_dbg(dev, "sar-hysteresis: %d\n", nau8824->sar_hysteresis); + dev_dbg(dev, "sar-voltage: %d\n", nau8824->sar_voltage); + dev_dbg(dev, "sar-compare-time: %d\n", nau8824->sar_compare_time); + dev_dbg(dev, "sar-sampling-time: %d\n", nau8824->sar_sampling_time); + dev_dbg(dev, "short-key-debounce: %d\n", nau8824->key_debounce); + dev_dbg(dev, "jack-eject-debounce: %d\n", + nau8824->jack_eject_debounce); +} + +static int nau8824_read_device_properties(struct device *dev, + struct nau8824 *nau8824) { + int ret; + + ret = device_property_read_u32(dev, "nuvoton,jkdet-polarity", + &nau8824->jkdet_polarity); + if (ret) + nau8824->jkdet_polarity = 1; + ret = device_property_read_u32(dev, "nuvoton,micbias-voltage", + &nau8824->micbias_voltage); + if (ret) + nau8824->micbias_voltage = 6; + ret = device_property_read_u32(dev, "nuvoton,vref-impedance", + &nau8824->vref_impedance); + if (ret) + nau8824->vref_impedance = 2; + ret = device_property_read_u32(dev, "nuvoton,sar-threshold-num", + &nau8824->sar_threshold_num); + if (ret) + nau8824->sar_threshold_num = 4; + ret = device_property_read_u32_array(dev, "nuvoton,sar-threshold", + nau8824->sar_threshold, nau8824->sar_threshold_num); + if (ret) { + nau8824->sar_threshold[0] = 0x0a; + nau8824->sar_threshold[1] = 0x14; + nau8824->sar_threshold[2] = 0x26; + nau8824->sar_threshold[3] = 0x73; + } + ret = device_property_read_u32(dev, "nuvoton,sar-hysteresis", + &nau8824->sar_hysteresis); + if (ret) + nau8824->sar_hysteresis = 0; + ret = device_property_read_u32(dev, "nuvoton,sar-voltage", + &nau8824->sar_voltage); + if (ret) + nau8824->sar_voltage = 6; + ret = device_property_read_u32(dev, "nuvoton,sar-compare-time", + &nau8824->sar_compare_time); + if (ret) + nau8824->sar_compare_time = 1; + ret = device_property_read_u32(dev, "nuvoton,sar-sampling-time", + &nau8824->sar_sampling_time); + if (ret) + nau8824->sar_sampling_time = 1; + ret = device_property_read_u32(dev, "nuvoton,short-key-debounce", + &nau8824->key_debounce); + if (ret) + nau8824->key_debounce = 0; + ret = device_property_read_u32(dev, "nuvoton,jack-eject-debounce", + &nau8824->jack_eject_debounce); + if (ret) + nau8824->jack_eject_debounce = 1; + + return 0; +} + +static int nau8824_i2c_probe(struct i2c_client *i2c, + const struct i2c_device_id *id) +{ + struct device *dev = &i2c->dev; + struct nau8824 *nau8824 = dev_get_platdata(dev); + int ret, value; + + if (!nau8824) { + nau8824 = devm_kzalloc(dev, sizeof(*nau8824), GFP_KERNEL); + if (!nau8824) + return -ENOMEM; + ret = nau8824_read_device_properties(dev, nau8824); + if (ret) + return ret; + } + i2c_set_clientdata(i2c, nau8824); + + nau8824->regmap = devm_regmap_init_i2c(i2c, &nau8824_regmap_config); + if (IS_ERR(nau8824->regmap)) + return PTR_ERR(nau8824->regmap); + nau8824->dev = dev; + nau8824->irq = i2c->irq; + sema_init(&nau8824->jd_sem, 1); + + nau8824_print_device_properties(nau8824); + + ret = regmap_read(nau8824->regmap, NAU8824_REG_I2C_DEVICE_ID, &value); + if (ret < 0) { + dev_err(dev, "Failed to read device id from the NAU8824: %d\n", + ret); + return ret; + } + nau8824_reset_chip(nau8824->regmap); + nau8824_init_regs(nau8824); + + if (i2c->irq) + nau8824_setup_irq(nau8824); + + return snd_soc_register_codec(dev, + &nau8824_codec_driver, &nau8824_dai, 1); +} + + +static int nau8824_i2c_remove(struct i2c_client *client) +{ + snd_soc_unregister_codec(&client->dev); + return 0; +} + +static const struct i2c_device_id nau8824_i2c_ids[] = { + { "nau8824", 0 }, + { } +}; +MODULE_DEVICE_TABLE(i2c, nau8824_i2c_ids); + +#ifdef CONFIG_OF +static const struct of_device_id nau8824_of_ids[] = { + { .compatible = "nuvoton,nau8824", }, + {} +}; +MODULE_DEVICE_TABLE(of, nau8824_of_ids); +#endif + +#ifdef CONFIG_ACPI +static const struct acpi_device_id nau8824_acpi_match[] = { + { "10508824", 0 }, + {}, +}; +MODULE_DEVICE_TABLE(acpi, nau8824_acpi_match); +#endif + +static struct i2c_driver nau8824_i2c_driver = { + .driver = { + .name = "nau8824", + .of_match_table = of_match_ptr(nau8824_of_ids), + .acpi_match_table = ACPI_PTR(nau8824_acpi_match), + }, + .probe = nau8824_i2c_probe, + .remove = nau8824_i2c_remove, + .id_table = nau8824_i2c_ids, +}; +module_i2c_driver(nau8824_i2c_driver); + + +MODULE_DESCRIPTION("ASoC NAU88L24 driver"); +MODULE_AUTHOR("John Hsu <KCHSU0@nuvoton.com>"); +MODULE_LICENSE("GPL v2"); |