diff options
Diffstat (limited to 'sound/soc/codecs/cs42l42.c')
| -rw-r--r-- | sound/soc/codecs/cs42l42.c | 1965 |
1 files changed, 1965 insertions, 0 deletions
diff --git a/sound/soc/codecs/cs42l42.c b/sound/soc/codecs/cs42l42.c new file mode 100644 index 000000000..9471ba17e --- /dev/null +++ b/sound/soc/codecs/cs42l42.c @@ -0,0 +1,1965 @@ +/* + * cs42l42.c -- CS42L42 ALSA SoC audio driver + * + * Copyright 2016 Cirrus Logic, Inc. + * + * Author: James Schulman <james.schulman@cirrus.com> + * Author: Brian Austin <brian.austin@cirrus.com> + * Author: Michael White <michael.white@cirrus.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/moduleparam.h> +#include <linux/version.h> +#include <linux/kernel.h> +#include <linux/init.h> +#include <linux/delay.h> +#include <linux/i2c.h> +#include <linux/gpio.h> +#include <linux/regmap.h> +#include <linux/slab.h> +#include <linux/platform_device.h> +#include <linux/regulator/consumer.h> +#include <linux/gpio/consumer.h> +#include <linux/of.h> +#include <linux/of_gpio.h> +#include <linux/of_device.h> +#include <sound/core.h> +#include <sound/pcm.h> +#include <sound/pcm_params.h> +#include <sound/soc.h> +#include <sound/soc-dapm.h> +#include <sound/initval.h> +#include <sound/tlv.h> +#include <dt-bindings/sound/cs42l42.h> + +#include "cs42l42.h" + +static const struct reg_default cs42l42_reg_defaults[] = { + { CS42L42_FRZ_CTL, 0x00 }, + { CS42L42_SRC_CTL, 0x10 }, + { CS42L42_MCLK_STATUS, 0x02 }, + { CS42L42_MCLK_CTL, 0x02 }, + { CS42L42_SFTRAMP_RATE, 0xA4 }, + { CS42L42_I2C_DEBOUNCE, 0x88 }, + { CS42L42_I2C_STRETCH, 0x03 }, + { CS42L42_I2C_TIMEOUT, 0xB7 }, + { CS42L42_PWR_CTL1, 0xFF }, + { CS42L42_PWR_CTL2, 0x84 }, + { CS42L42_PWR_CTL3, 0x20 }, + { CS42L42_RSENSE_CTL1, 0x40 }, + { CS42L42_RSENSE_CTL2, 0x00 }, + { CS42L42_OSC_SWITCH, 0x00 }, + { CS42L42_OSC_SWITCH_STATUS, 0x05 }, + { CS42L42_RSENSE_CTL3, 0x1B }, + { CS42L42_TSENSE_CTL, 0x1B }, + { CS42L42_TSRS_INT_DISABLE, 0x00 }, + { CS42L42_TRSENSE_STATUS, 0x00 }, + { CS42L42_HSDET_CTL1, 0x77 }, + { CS42L42_HSDET_CTL2, 0x00 }, + { CS42L42_HS_SWITCH_CTL, 0xF3 }, + { CS42L42_HS_DET_STATUS, 0x00 }, + { CS42L42_HS_CLAMP_DISABLE, 0x00 }, + { CS42L42_MCLK_SRC_SEL, 0x00 }, + { CS42L42_SPDIF_CLK_CFG, 0x00 }, + { CS42L42_FSYNC_PW_LOWER, 0x00 }, + { CS42L42_FSYNC_PW_UPPER, 0x00 }, + { CS42L42_FSYNC_P_LOWER, 0xF9 }, + { CS42L42_FSYNC_P_UPPER, 0x00 }, + { CS42L42_ASP_CLK_CFG, 0x00 }, + { CS42L42_ASP_FRM_CFG, 0x10 }, + { CS42L42_FS_RATE_EN, 0x00 }, + { CS42L42_IN_ASRC_CLK, 0x00 }, + { CS42L42_OUT_ASRC_CLK, 0x00 }, + { CS42L42_PLL_DIV_CFG1, 0x00 }, + { CS42L42_ADC_OVFL_STATUS, 0x00 }, + { CS42L42_MIXER_STATUS, 0x00 }, + { CS42L42_SRC_STATUS, 0x00 }, + { CS42L42_ASP_RX_STATUS, 0x00 }, + { CS42L42_ASP_TX_STATUS, 0x00 }, + { CS42L42_CODEC_STATUS, 0x00 }, + { CS42L42_DET_INT_STATUS1, 0x00 }, + { CS42L42_DET_INT_STATUS2, 0x00 }, + { CS42L42_SRCPL_INT_STATUS, 0x00 }, + { CS42L42_VPMON_STATUS, 0x00 }, + { CS42L42_PLL_LOCK_STATUS, 0x00 }, + { CS42L42_TSRS_PLUG_STATUS, 0x00 }, + { CS42L42_ADC_OVFL_INT_MASK, 0x01 }, + { CS42L42_MIXER_INT_MASK, 0x0F }, + { CS42L42_SRC_INT_MASK, 0x0F }, + { CS42L42_ASP_RX_INT_MASK, 0x1F }, + { CS42L42_ASP_TX_INT_MASK, 0x0F }, + { CS42L42_CODEC_INT_MASK, 0x03 }, + { CS42L42_SRCPL_INT_MASK, 0x7F }, + { CS42L42_VPMON_INT_MASK, 0x01 }, + { CS42L42_PLL_LOCK_INT_MASK, 0x01 }, + { CS42L42_TSRS_PLUG_INT_MASK, 0x0F }, + { CS42L42_PLL_CTL1, 0x00 }, + { CS42L42_PLL_DIV_FRAC0, 0x00 }, + { CS42L42_PLL_DIV_FRAC1, 0x00 }, + { CS42L42_PLL_DIV_FRAC2, 0x00 }, + { CS42L42_PLL_DIV_INT, 0x40 }, + { CS42L42_PLL_CTL3, 0x10 }, + { CS42L42_PLL_CAL_RATIO, 0x80 }, + { CS42L42_PLL_CTL4, 0x03 }, + { CS42L42_LOAD_DET_RCSTAT, 0x00 }, + { CS42L42_LOAD_DET_DONE, 0x00 }, + { CS42L42_LOAD_DET_EN, 0x00 }, + { CS42L42_HSBIAS_SC_AUTOCTL, 0x03 }, + { CS42L42_WAKE_CTL, 0xC0 }, + { CS42L42_ADC_DISABLE_MUTE, 0x00 }, + { CS42L42_TIPSENSE_CTL, 0x02 }, + { CS42L42_MISC_DET_CTL, 0x03 }, + { CS42L42_MIC_DET_CTL1, 0x1F }, + { CS42L42_MIC_DET_CTL2, 0x2F }, + { CS42L42_DET_STATUS1, 0x00 }, + { CS42L42_DET_STATUS2, 0x00 }, + { CS42L42_DET_INT1_MASK, 0xE0 }, + { CS42L42_DET_INT2_MASK, 0xFF }, + { CS42L42_HS_BIAS_CTL, 0xC2 }, + { CS42L42_ADC_CTL, 0x00 }, + { CS42L42_ADC_VOLUME, 0x00 }, + { CS42L42_ADC_WNF_HPF_CTL, 0x71 }, + { CS42L42_DAC_CTL1, 0x00 }, + { CS42L42_DAC_CTL2, 0x02 }, + { CS42L42_HP_CTL, 0x0D }, + { CS42L42_CLASSH_CTL, 0x07 }, + { CS42L42_MIXER_CHA_VOL, 0x3F }, + { CS42L42_MIXER_ADC_VOL, 0x3F }, + { CS42L42_MIXER_CHB_VOL, 0x3F }, + { CS42L42_EQ_COEF_IN0, 0x00 }, + { CS42L42_EQ_COEF_IN1, 0x00 }, + { CS42L42_EQ_COEF_IN2, 0x00 }, + { CS42L42_EQ_COEF_IN3, 0x00 }, + { CS42L42_EQ_COEF_RW, 0x00 }, + { CS42L42_EQ_COEF_OUT0, 0x00 }, + { CS42L42_EQ_COEF_OUT1, 0x00 }, + { CS42L42_EQ_COEF_OUT2, 0x00 }, + { CS42L42_EQ_COEF_OUT3, 0x00 }, + { CS42L42_EQ_INIT_STAT, 0x00 }, + { CS42L42_EQ_START_FILT, 0x00 }, + { CS42L42_EQ_MUTE_CTL, 0x00 }, + { CS42L42_SP_RX_CH_SEL, 0x04 }, + { CS42L42_SP_RX_ISOC_CTL, 0x04 }, + { CS42L42_SP_RX_FS, 0x8C }, + { CS42l42_SPDIF_CH_SEL, 0x0E }, + { CS42L42_SP_TX_ISOC_CTL, 0x04 }, + { CS42L42_SP_TX_FS, 0xCC }, + { CS42L42_SPDIF_SW_CTL1, 0x3F }, + { CS42L42_SRC_SDIN_FS, 0x40 }, + { CS42L42_SRC_SDOUT_FS, 0x40 }, + { CS42L42_SPDIF_CTL1, 0x01 }, + { CS42L42_SPDIF_CTL2, 0x00 }, + { CS42L42_SPDIF_CTL3, 0x00 }, + { CS42L42_SPDIF_CTL4, 0x42 }, + { CS42L42_ASP_TX_SZ_EN, 0x00 }, + { CS42L42_ASP_TX_CH_EN, 0x00 }, + { CS42L42_ASP_TX_CH_AP_RES, 0x0F }, + { CS42L42_ASP_TX_CH1_BIT_MSB, 0x00 }, + { CS42L42_ASP_TX_CH1_BIT_LSB, 0x00 }, + { CS42L42_ASP_TX_HIZ_DLY_CFG, 0x00 }, + { CS42L42_ASP_TX_CH2_BIT_MSB, 0x00 }, + { CS42L42_ASP_TX_CH2_BIT_LSB, 0x00 }, + { CS42L42_ASP_RX_DAI0_EN, 0x00 }, + { CS42L42_ASP_RX_DAI0_CH1_AP_RES, 0x03 }, + { CS42L42_ASP_RX_DAI0_CH1_BIT_MSB, 0x00 }, + { CS42L42_ASP_RX_DAI0_CH1_BIT_LSB, 0x00 }, + { CS42L42_ASP_RX_DAI0_CH2_AP_RES, 0x03 }, + { CS42L42_ASP_RX_DAI0_CH2_BIT_MSB, 0x00 }, + { CS42L42_ASP_RX_DAI0_CH2_BIT_LSB, 0x00 }, + { CS42L42_ASP_RX_DAI0_CH3_AP_RES, 0x03 }, + { CS42L42_ASP_RX_DAI0_CH3_BIT_MSB, 0x00 }, + { CS42L42_ASP_RX_DAI0_CH3_BIT_LSB, 0x00 }, + { CS42L42_ASP_RX_DAI0_CH4_AP_RES, 0x03 }, + { CS42L42_ASP_RX_DAI0_CH4_BIT_MSB, 0x00 }, + { CS42L42_ASP_RX_DAI0_CH4_BIT_LSB, 0x00 }, + { CS42L42_ASP_RX_DAI1_CH1_AP_RES, 0x03 }, + { CS42L42_ASP_RX_DAI1_CH1_BIT_MSB, 0x00 }, + { CS42L42_ASP_RX_DAI1_CH1_BIT_LSB, 0x00 }, + { CS42L42_ASP_RX_DAI1_CH2_AP_RES, 0x03 }, + { CS42L42_ASP_RX_DAI1_CH2_BIT_MSB, 0x00 }, + { CS42L42_ASP_RX_DAI1_CH2_BIT_LSB, 0x00 }, + { CS42L42_SUB_REVID, 0x03 }, +}; + +static bool cs42l42_readable_register(struct device *dev, unsigned int reg) +{ + switch (reg) { + case CS42L42_PAGE_REGISTER: + case CS42L42_DEVID_AB: + case CS42L42_DEVID_CD: + case CS42L42_DEVID_E: + case CS42L42_FABID: + case CS42L42_REVID: + case CS42L42_FRZ_CTL: + case CS42L42_SRC_CTL: + case CS42L42_MCLK_STATUS: + case CS42L42_MCLK_CTL: + case CS42L42_SFTRAMP_RATE: + case CS42L42_I2C_DEBOUNCE: + case CS42L42_I2C_STRETCH: + case CS42L42_I2C_TIMEOUT: + case CS42L42_PWR_CTL1: + case CS42L42_PWR_CTL2: + case CS42L42_PWR_CTL3: + case CS42L42_RSENSE_CTL1: + case CS42L42_RSENSE_CTL2: + case CS42L42_OSC_SWITCH: + case CS42L42_OSC_SWITCH_STATUS: + case CS42L42_RSENSE_CTL3: + case CS42L42_TSENSE_CTL: + case CS42L42_TSRS_INT_DISABLE: + case CS42L42_TRSENSE_STATUS: + case CS42L42_HSDET_CTL1: + case CS42L42_HSDET_CTL2: + case CS42L42_HS_SWITCH_CTL: + case CS42L42_HS_DET_STATUS: + case CS42L42_HS_CLAMP_DISABLE: + case CS42L42_MCLK_SRC_SEL: + case CS42L42_SPDIF_CLK_CFG: + case CS42L42_FSYNC_PW_LOWER: + case CS42L42_FSYNC_PW_UPPER: + case CS42L42_FSYNC_P_LOWER: + case CS42L42_FSYNC_P_UPPER: + case CS42L42_ASP_CLK_CFG: + case CS42L42_ASP_FRM_CFG: + case CS42L42_FS_RATE_EN: + case CS42L42_IN_ASRC_CLK: + case CS42L42_OUT_ASRC_CLK: + case CS42L42_PLL_DIV_CFG1: + case CS42L42_ADC_OVFL_STATUS: + case CS42L42_MIXER_STATUS: + case CS42L42_SRC_STATUS: + case CS42L42_ASP_RX_STATUS: + case CS42L42_ASP_TX_STATUS: + case CS42L42_CODEC_STATUS: + case CS42L42_DET_INT_STATUS1: + case CS42L42_DET_INT_STATUS2: + case CS42L42_SRCPL_INT_STATUS: + case CS42L42_VPMON_STATUS: + case CS42L42_PLL_LOCK_STATUS: + case CS42L42_TSRS_PLUG_STATUS: + case CS42L42_ADC_OVFL_INT_MASK: + case CS42L42_MIXER_INT_MASK: + case CS42L42_SRC_INT_MASK: + case CS42L42_ASP_RX_INT_MASK: + case CS42L42_ASP_TX_INT_MASK: + case CS42L42_CODEC_INT_MASK: + case CS42L42_SRCPL_INT_MASK: + case CS42L42_VPMON_INT_MASK: + case CS42L42_PLL_LOCK_INT_MASK: + case CS42L42_TSRS_PLUG_INT_MASK: + case CS42L42_PLL_CTL1: + case CS42L42_PLL_DIV_FRAC0: + case CS42L42_PLL_DIV_FRAC1: + case CS42L42_PLL_DIV_FRAC2: + case CS42L42_PLL_DIV_INT: + case CS42L42_PLL_CTL3: + case CS42L42_PLL_CAL_RATIO: + case CS42L42_PLL_CTL4: + case CS42L42_LOAD_DET_RCSTAT: + case CS42L42_LOAD_DET_DONE: + case CS42L42_LOAD_DET_EN: + case CS42L42_HSBIAS_SC_AUTOCTL: + case CS42L42_WAKE_CTL: + case CS42L42_ADC_DISABLE_MUTE: + case CS42L42_TIPSENSE_CTL: + case CS42L42_MISC_DET_CTL: + case CS42L42_MIC_DET_CTL1: + case CS42L42_MIC_DET_CTL2: + case CS42L42_DET_STATUS1: + case CS42L42_DET_STATUS2: + case CS42L42_DET_INT1_MASK: + case CS42L42_DET_INT2_MASK: + case CS42L42_HS_BIAS_CTL: + case CS42L42_ADC_CTL: + case CS42L42_ADC_VOLUME: + case CS42L42_ADC_WNF_HPF_CTL: + case CS42L42_DAC_CTL1: + case CS42L42_DAC_CTL2: + case CS42L42_HP_CTL: + case CS42L42_CLASSH_CTL: + case CS42L42_MIXER_CHA_VOL: + case CS42L42_MIXER_ADC_VOL: + case CS42L42_MIXER_CHB_VOL: + case CS42L42_EQ_COEF_IN0: + case CS42L42_EQ_COEF_IN1: + case CS42L42_EQ_COEF_IN2: + case CS42L42_EQ_COEF_IN3: + case CS42L42_EQ_COEF_RW: + case CS42L42_EQ_COEF_OUT0: + case CS42L42_EQ_COEF_OUT1: + case CS42L42_EQ_COEF_OUT2: + case CS42L42_EQ_COEF_OUT3: + case CS42L42_EQ_INIT_STAT: + case CS42L42_EQ_START_FILT: + case CS42L42_EQ_MUTE_CTL: + case CS42L42_SP_RX_CH_SEL: + case CS42L42_SP_RX_ISOC_CTL: + case CS42L42_SP_RX_FS: + case CS42l42_SPDIF_CH_SEL: + case CS42L42_SP_TX_ISOC_CTL: + case CS42L42_SP_TX_FS: + case CS42L42_SPDIF_SW_CTL1: + case CS42L42_SRC_SDIN_FS: + case CS42L42_SRC_SDOUT_FS: + case CS42L42_SPDIF_CTL1: + case CS42L42_SPDIF_CTL2: + case CS42L42_SPDIF_CTL3: + case CS42L42_SPDIF_CTL4: + case CS42L42_ASP_TX_SZ_EN: + case CS42L42_ASP_TX_CH_EN: + case CS42L42_ASP_TX_CH_AP_RES: + case CS42L42_ASP_TX_CH1_BIT_MSB: + case CS42L42_ASP_TX_CH1_BIT_LSB: + case CS42L42_ASP_TX_HIZ_DLY_CFG: + case CS42L42_ASP_TX_CH2_BIT_MSB: + case CS42L42_ASP_TX_CH2_BIT_LSB: + case CS42L42_ASP_RX_DAI0_EN: + case CS42L42_ASP_RX_DAI0_CH1_AP_RES: + case CS42L42_ASP_RX_DAI0_CH1_BIT_MSB: + case CS42L42_ASP_RX_DAI0_CH1_BIT_LSB: + case CS42L42_ASP_RX_DAI0_CH2_AP_RES: + case CS42L42_ASP_RX_DAI0_CH2_BIT_MSB: + case CS42L42_ASP_RX_DAI0_CH2_BIT_LSB: + case CS42L42_ASP_RX_DAI0_CH3_AP_RES: + case CS42L42_ASP_RX_DAI0_CH3_BIT_MSB: + case CS42L42_ASP_RX_DAI0_CH3_BIT_LSB: + case CS42L42_ASP_RX_DAI0_CH4_AP_RES: + case CS42L42_ASP_RX_DAI0_CH4_BIT_MSB: + case CS42L42_ASP_RX_DAI0_CH4_BIT_LSB: + case CS42L42_ASP_RX_DAI1_CH1_AP_RES: + case CS42L42_ASP_RX_DAI1_CH1_BIT_MSB: + case CS42L42_ASP_RX_DAI1_CH1_BIT_LSB: + case CS42L42_ASP_RX_DAI1_CH2_AP_RES: + case CS42L42_ASP_RX_DAI1_CH2_BIT_MSB: + case CS42L42_ASP_RX_DAI1_CH2_BIT_LSB: + case CS42L42_SUB_REVID: + return true; + default: + return false; + } +} + +static bool cs42l42_volatile_register(struct device *dev, unsigned int reg) +{ + switch (reg) { + case CS42L42_DEVID_AB: + case CS42L42_DEVID_CD: + case CS42L42_DEVID_E: + case CS42L42_MCLK_STATUS: + case CS42L42_TRSENSE_STATUS: + case CS42L42_HS_DET_STATUS: + case CS42L42_ADC_OVFL_STATUS: + case CS42L42_MIXER_STATUS: + case CS42L42_SRC_STATUS: + case CS42L42_ASP_RX_STATUS: + case CS42L42_ASP_TX_STATUS: + case CS42L42_CODEC_STATUS: + case CS42L42_DET_INT_STATUS1: + case CS42L42_DET_INT_STATUS2: + case CS42L42_SRCPL_INT_STATUS: + case CS42L42_VPMON_STATUS: + case CS42L42_PLL_LOCK_STATUS: + case CS42L42_TSRS_PLUG_STATUS: + case CS42L42_LOAD_DET_RCSTAT: + case CS42L42_LOAD_DET_DONE: + case CS42L42_DET_STATUS1: + case CS42L42_DET_STATUS2: + return true; + default: + return false; + } +} + +static const struct regmap_range_cfg cs42l42_page_range = { + .name = "Pages", + .range_min = 0, + .range_max = CS42L42_MAX_REGISTER, + .selector_reg = CS42L42_PAGE_REGISTER, + .selector_mask = 0xff, + .selector_shift = 0, + .window_start = 0, + .window_len = 256, +}; + +static const struct regmap_config cs42l42_regmap = { + .reg_bits = 8, + .val_bits = 8, + + .readable_reg = cs42l42_readable_register, + .volatile_reg = cs42l42_volatile_register, + + .ranges = &cs42l42_page_range, + .num_ranges = 1, + + .max_register = CS42L42_MAX_REGISTER, + .reg_defaults = cs42l42_reg_defaults, + .num_reg_defaults = ARRAY_SIZE(cs42l42_reg_defaults), + .cache_type = REGCACHE_RBTREE, +}; + +static DECLARE_TLV_DB_SCALE(adc_tlv, -9700, 100, true); +static DECLARE_TLV_DB_SCALE(mixer_tlv, -6300, 100, true); + +static const char * const cs42l42_hpf_freq_text[] = { + "1.86Hz", "120Hz", "235Hz", "466Hz" +}; + +static SOC_ENUM_SINGLE_DECL(cs42l42_hpf_freq_enum, CS42L42_ADC_WNF_HPF_CTL, + CS42L42_ADC_HPF_CF_SHIFT, + cs42l42_hpf_freq_text); + +static const char * const cs42l42_wnf3_freq_text[] = { + "160Hz", "180Hz", "200Hz", "220Hz", + "240Hz", "260Hz", "280Hz", "300Hz" +}; + +static SOC_ENUM_SINGLE_DECL(cs42l42_wnf3_freq_enum, CS42L42_ADC_WNF_HPF_CTL, + CS42L42_ADC_WNF_CF_SHIFT, + cs42l42_wnf3_freq_text); + +static const struct snd_kcontrol_new cs42l42_snd_controls[] = { + /* ADC Volume and Filter Controls */ + SOC_SINGLE("ADC Notch Switch", CS42L42_ADC_CTL, + CS42L42_ADC_NOTCH_DIS_SHIFT, true, true), + SOC_SINGLE("ADC Weak Force Switch", CS42L42_ADC_CTL, + CS42L42_ADC_FORCE_WEAK_VCM_SHIFT, true, false), + SOC_SINGLE("ADC Invert Switch", CS42L42_ADC_CTL, + CS42L42_ADC_INV_SHIFT, true, false), + SOC_SINGLE("ADC Boost Switch", CS42L42_ADC_CTL, + CS42L42_ADC_DIG_BOOST_SHIFT, true, false), + SOC_SINGLE_S8_TLV("ADC Volume", CS42L42_ADC_VOLUME, -97, 12, adc_tlv), + SOC_SINGLE("ADC WNF Switch", CS42L42_ADC_WNF_HPF_CTL, + CS42L42_ADC_WNF_EN_SHIFT, true, false), + SOC_SINGLE("ADC HPF Switch", CS42L42_ADC_WNF_HPF_CTL, + CS42L42_ADC_HPF_EN_SHIFT, true, false), + SOC_ENUM("HPF Corner Freq", cs42l42_hpf_freq_enum), + SOC_ENUM("WNF 3dB Freq", cs42l42_wnf3_freq_enum), + + /* DAC Volume and Filter Controls */ + SOC_SINGLE("DACA Invert Switch", CS42L42_DAC_CTL1, + CS42L42_DACA_INV_SHIFT, true, false), + SOC_SINGLE("DACB Invert Switch", CS42L42_DAC_CTL1, + CS42L42_DACB_INV_SHIFT, true, false), + SOC_SINGLE("DAC HPF Switch", CS42L42_DAC_CTL2, + CS42L42_DAC_HPF_EN_SHIFT, true, false), + SOC_DOUBLE_R_TLV("Mixer Volume", CS42L42_MIXER_CHA_VOL, + CS42L42_MIXER_CHB_VOL, CS42L42_MIXER_CH_VOL_SHIFT, + 0x3f, 1, mixer_tlv) +}; + +static int cs42l42_hpdrv_evt(struct snd_soc_dapm_widget *w, + struct snd_kcontrol *kcontrol, int event) +{ + struct snd_soc_component *component = snd_soc_dapm_to_component(w->dapm); + + if (event & SND_SOC_DAPM_POST_PMU) { + /* Enable the channels */ + snd_soc_component_update_bits(component, CS42L42_ASP_RX_DAI0_EN, + CS42L42_ASP_RX0_CH_EN_MASK, + (CS42L42_ASP_RX0_CH1_EN | + CS42L42_ASP_RX0_CH2_EN) << + CS42L42_ASP_RX0_CH_EN_SHIFT); + + /* Power up */ + snd_soc_component_update_bits(component, CS42L42_PWR_CTL1, + CS42L42_ASP_DAI_PDN_MASK | CS42L42_MIXER_PDN_MASK | + CS42L42_HP_PDN_MASK, 0); + } else if (event & SND_SOC_DAPM_PRE_PMD) { + /* Disable the channels */ + snd_soc_component_update_bits(component, CS42L42_ASP_RX_DAI0_EN, + CS42L42_ASP_RX0_CH_EN_MASK, 0); + + /* Power down */ + snd_soc_component_update_bits(component, CS42L42_PWR_CTL1, + CS42L42_ASP_DAI_PDN_MASK | CS42L42_MIXER_PDN_MASK | + CS42L42_HP_PDN_MASK, + CS42L42_ASP_DAI_PDN_MASK | CS42L42_MIXER_PDN_MASK | + CS42L42_HP_PDN_MASK); + } else { + dev_err(component->dev, "Invalid event 0x%x\n", event); + } + return 0; +} + +static const struct snd_soc_dapm_widget cs42l42_dapm_widgets[] = { + SND_SOC_DAPM_OUTPUT("HP"), + SND_SOC_DAPM_AIF_IN("SDIN", NULL, 0, CS42L42_ASP_CLK_CFG, + CS42L42_ASP_SCLK_EN_SHIFT, false), + SND_SOC_DAPM_OUT_DRV_E("HPDRV", SND_SOC_NOPM, 0, + 0, NULL, 0, cs42l42_hpdrv_evt, + SND_SOC_DAPM_POST_PMU | + SND_SOC_DAPM_PRE_PMD) +}; + +static const struct snd_soc_dapm_route cs42l42_audio_map[] = { + {"SDIN", NULL, "Playback"}, + {"HPDRV", NULL, "SDIN"}, + {"HP", NULL, "HPDRV"} +}; + +static int cs42l42_set_bias_level(struct snd_soc_component *component, + enum snd_soc_bias_level level) +{ + struct cs42l42_private *cs42l42 = snd_soc_component_get_drvdata(component); + int ret; + + switch (level) { + case SND_SOC_BIAS_ON: + break; + case SND_SOC_BIAS_PREPARE: + break; + case SND_SOC_BIAS_STANDBY: + if (snd_soc_component_get_bias_level(component) == SND_SOC_BIAS_OFF) { + regcache_cache_only(cs42l42->regmap, false); + regcache_sync(cs42l42->regmap); + ret = regulator_bulk_enable( + ARRAY_SIZE(cs42l42->supplies), + cs42l42->supplies); + if (ret != 0) { + dev_err(component->dev, + "Failed to enable regulators: %d\n", + ret); + return ret; + } + } + break; + case SND_SOC_BIAS_OFF: + + regcache_cache_only(cs42l42->regmap, true); + regulator_bulk_disable(ARRAY_SIZE(cs42l42->supplies), + cs42l42->supplies); + break; + } + + return 0; +} + +static int cs42l42_component_probe(struct snd_soc_component *component) +{ + struct cs42l42_private *cs42l42 = + (struct cs42l42_private *)snd_soc_component_get_drvdata(component); + + cs42l42->component = component; + + return 0; +} + +static const struct snd_soc_component_driver soc_component_dev_cs42l42 = { + .probe = cs42l42_component_probe, + .set_bias_level = cs42l42_set_bias_level, + .dapm_widgets = cs42l42_dapm_widgets, + .num_dapm_widgets = ARRAY_SIZE(cs42l42_dapm_widgets), + .dapm_routes = cs42l42_audio_map, + .num_dapm_routes = ARRAY_SIZE(cs42l42_audio_map), + .controls = cs42l42_snd_controls, + .num_controls = ARRAY_SIZE(cs42l42_snd_controls), + .idle_bias_on = 1, + .endianness = 1, + .non_legacy_dai_naming = 1, +}; + +struct cs42l42_pll_params { + u32 sclk; + u8 mclk_div; + u8 mclk_src_sel; + u8 sclk_prediv; + u8 pll_div_int; + u32 pll_div_frac; + u8 pll_mode; + u8 pll_divout; + u32 mclk_int; + u8 pll_cal_ratio; +}; + +/* + * Common PLL Settings for given SCLK + * Table 4-5 from the Datasheet + */ +static const struct cs42l42_pll_params pll_ratio_table[] = { + { 1536000, 0, 1, 0x00, 0x7D, 0x000000, 0x03, 0x10, 12000000, 125 }, + { 2822400, 0, 1, 0x00, 0x40, 0x000000, 0x03, 0x10, 11289600, 128 }, + { 3000000, 0, 1, 0x00, 0x40, 0x000000, 0x03, 0x10, 12000000, 128 }, + { 3072000, 0, 1, 0x00, 0x3E, 0x800000, 0x03, 0x10, 12000000, 125 }, + { 4000000, 0, 1, 0x00, 0x30, 0x800000, 0x03, 0x10, 12000000, 96 }, + { 4096000, 0, 1, 0x00, 0x2E, 0xE00000, 0x03, 0x10, 12000000, 94 }, + { 5644800, 0, 1, 0x01, 0x40, 0x000000, 0x03, 0x10, 11289600, 128 }, + { 6000000, 0, 1, 0x01, 0x40, 0x000000, 0x03, 0x10, 12000000, 128 }, + { 6144000, 0, 1, 0x01, 0x3E, 0x800000, 0x03, 0x10, 12000000, 125 }, + { 11289600, 0, 0, 0, 0, 0, 0, 0, 11289600, 0 }, + { 12000000, 0, 0, 0, 0, 0, 0, 0, 12000000, 0 }, + { 12288000, 0, 0, 0, 0, 0, 0, 0, 12288000, 0 }, + { 22579200, 1, 0, 0, 0, 0, 0, 0, 22579200, 0 }, + { 24000000, 1, 0, 0, 0, 0, 0, 0, 24000000, 0 }, + { 24576000, 1, 0, 0, 0, 0, 0, 0, 24576000, 0 } +}; + +static int cs42l42_pll_config(struct snd_soc_component *component) +{ + struct cs42l42_private *cs42l42 = snd_soc_component_get_drvdata(component); + int i; + u32 fsync; + + for (i = 0; i < ARRAY_SIZE(pll_ratio_table); i++) { + if (pll_ratio_table[i].sclk == cs42l42->sclk) { + /* Configure the internal sample rate */ + snd_soc_component_update_bits(component, CS42L42_MCLK_CTL, + CS42L42_INTERNAL_FS_MASK, + ((pll_ratio_table[i].mclk_int != + 12000000) && + (pll_ratio_table[i].mclk_int != + 24000000)) << + CS42L42_INTERNAL_FS_SHIFT); + /* Set the MCLK src (PLL or SCLK) and the divide + * ratio + */ + snd_soc_component_update_bits(component, CS42L42_MCLK_SRC_SEL, + CS42L42_MCLK_SRC_SEL_MASK | + CS42L42_MCLKDIV_MASK, + (pll_ratio_table[i].mclk_src_sel + << CS42L42_MCLK_SRC_SEL_SHIFT) | + (pll_ratio_table[i].mclk_div << + CS42L42_MCLKDIV_SHIFT)); + /* Set up the LRCLK */ + fsync = cs42l42->sclk / cs42l42->srate; + if (((fsync * cs42l42->srate) != cs42l42->sclk) + || ((fsync % 2) != 0)) { + dev_err(component->dev, + "Unsupported sclk %d/sample rate %d\n", + cs42l42->sclk, + cs42l42->srate); + return -EINVAL; + } + /* Set the LRCLK period */ + snd_soc_component_update_bits(component, + CS42L42_FSYNC_P_LOWER, + CS42L42_FSYNC_PERIOD_MASK, + CS42L42_FRAC0_VAL(fsync - 1) << + CS42L42_FSYNC_PERIOD_SHIFT); + snd_soc_component_update_bits(component, + CS42L42_FSYNC_P_UPPER, + CS42L42_FSYNC_PERIOD_MASK, + CS42L42_FRAC1_VAL(fsync - 1) << + CS42L42_FSYNC_PERIOD_SHIFT); + /* Set the LRCLK to 50% duty cycle */ + fsync = fsync / 2; + snd_soc_component_update_bits(component, + CS42L42_FSYNC_PW_LOWER, + CS42L42_FSYNC_PULSE_WIDTH_MASK, + CS42L42_FRAC0_VAL(fsync - 1) << + CS42L42_FSYNC_PULSE_WIDTH_SHIFT); + snd_soc_component_update_bits(component, + CS42L42_FSYNC_PW_UPPER, + CS42L42_FSYNC_PULSE_WIDTH_MASK, + CS42L42_FRAC1_VAL(fsync - 1) << + CS42L42_FSYNC_PULSE_WIDTH_SHIFT); + /* Set the sample rates (96k or lower) */ + snd_soc_component_update_bits(component, CS42L42_FS_RATE_EN, + CS42L42_FS_EN_MASK, + (CS42L42_FS_EN_IASRC_96K | + CS42L42_FS_EN_OASRC_96K) << + CS42L42_FS_EN_SHIFT); + /* Set the input/output internal MCLK clock ~12 MHz */ + snd_soc_component_update_bits(component, CS42L42_IN_ASRC_CLK, + CS42L42_CLK_IASRC_SEL_MASK, + CS42L42_CLK_IASRC_SEL_12 << + CS42L42_CLK_IASRC_SEL_SHIFT); + snd_soc_component_update_bits(component, + CS42L42_OUT_ASRC_CLK, + CS42L42_CLK_OASRC_SEL_MASK, + CS42L42_CLK_OASRC_SEL_12 << + CS42L42_CLK_OASRC_SEL_SHIFT); + if (pll_ratio_table[i].mclk_src_sel == 0) { + /* Pass the clock straight through */ + snd_soc_component_update_bits(component, + CS42L42_PLL_CTL1, + CS42L42_PLL_START_MASK, 0); + } else { + /* Configure PLL per table 4-5 */ + snd_soc_component_update_bits(component, + CS42L42_PLL_DIV_CFG1, + CS42L42_SCLK_PREDIV_MASK, + pll_ratio_table[i].sclk_prediv + << CS42L42_SCLK_PREDIV_SHIFT); + snd_soc_component_update_bits(component, + CS42L42_PLL_DIV_INT, + CS42L42_PLL_DIV_INT_MASK, + pll_ratio_table[i].pll_div_int + << CS42L42_PLL_DIV_INT_SHIFT); + snd_soc_component_update_bits(component, + CS42L42_PLL_DIV_FRAC0, + CS42L42_PLL_DIV_FRAC_MASK, + CS42L42_FRAC0_VAL( + pll_ratio_table[i].pll_div_frac) + << CS42L42_PLL_DIV_FRAC_SHIFT); + snd_soc_component_update_bits(component, + CS42L42_PLL_DIV_FRAC1, + CS42L42_PLL_DIV_FRAC_MASK, + CS42L42_FRAC1_VAL( + pll_ratio_table[i].pll_div_frac) + << CS42L42_PLL_DIV_FRAC_SHIFT); + snd_soc_component_update_bits(component, + CS42L42_PLL_DIV_FRAC2, + CS42L42_PLL_DIV_FRAC_MASK, + CS42L42_FRAC2_VAL( + pll_ratio_table[i].pll_div_frac) + << CS42L42_PLL_DIV_FRAC_SHIFT); + snd_soc_component_update_bits(component, + CS42L42_PLL_CTL4, + CS42L42_PLL_MODE_MASK, + pll_ratio_table[i].pll_mode + << CS42L42_PLL_MODE_SHIFT); + snd_soc_component_update_bits(component, + CS42L42_PLL_CTL3, + CS42L42_PLL_DIVOUT_MASK, + pll_ratio_table[i].pll_divout + << CS42L42_PLL_DIVOUT_SHIFT); + snd_soc_component_update_bits(component, + CS42L42_PLL_CAL_RATIO, + CS42L42_PLL_CAL_RATIO_MASK, + pll_ratio_table[i].pll_cal_ratio + << CS42L42_PLL_CAL_RATIO_SHIFT); + } + return 0; + } + } + + return -EINVAL; +} + +static int cs42l42_set_dai_fmt(struct snd_soc_dai *codec_dai, unsigned int fmt) +{ + struct snd_soc_component *component = codec_dai->component; + u32 asp_cfg_val = 0; + + switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { + case SND_SOC_DAIFMT_CBS_CFM: + asp_cfg_val |= CS42L42_ASP_MASTER_MODE << + CS42L42_ASP_MODE_SHIFT; + break; + case SND_SOC_DAIFMT_CBS_CFS: + asp_cfg_val |= CS42L42_ASP_SLAVE_MODE << + CS42L42_ASP_MODE_SHIFT; + break; + default: + return -EINVAL; + } + + /* interface format */ + switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { + case SND_SOC_DAIFMT_I2S: + /* + * 5050 mode, frame starts on falling edge of LRCLK, + * frame delayed by 1.0 SCLKs + */ + snd_soc_component_update_bits(component, + CS42L42_ASP_FRM_CFG, + CS42L42_ASP_STP_MASK | + CS42L42_ASP_5050_MASK | + CS42L42_ASP_FSD_MASK, + CS42L42_ASP_5050_MASK | + (CS42L42_ASP_FSD_1_0 << + CS42L42_ASP_FSD_SHIFT)); + break; + default: + return -EINVAL; + } + + /* Bitclock/frame inversion */ + switch (fmt & SND_SOC_DAIFMT_INV_MASK) { + case SND_SOC_DAIFMT_NB_NF: + asp_cfg_val |= CS42L42_ASP_SCPOL_NOR << CS42L42_ASP_SCPOL_SHIFT; + break; + case SND_SOC_DAIFMT_NB_IF: + asp_cfg_val |= CS42L42_ASP_SCPOL_NOR << CS42L42_ASP_SCPOL_SHIFT; + asp_cfg_val |= CS42L42_ASP_LCPOL_INV << CS42L42_ASP_LCPOL_SHIFT; + break; + case SND_SOC_DAIFMT_IB_NF: + break; + case SND_SOC_DAIFMT_IB_IF: + asp_cfg_val |= CS42L42_ASP_LCPOL_INV << CS42L42_ASP_LCPOL_SHIFT; + break; + } + + snd_soc_component_update_bits(component, CS42L42_ASP_CLK_CFG, CS42L42_ASP_MODE_MASK | + CS42L42_ASP_SCPOL_MASK | + CS42L42_ASP_LCPOL_MASK, + asp_cfg_val); + + return 0; +} + +static int cs42l42_pcm_hw_params(struct snd_pcm_substream *substream, + struct snd_pcm_hw_params *params, + struct snd_soc_dai *dai) +{ + struct snd_soc_component *component = dai->component; + struct cs42l42_private *cs42l42 = snd_soc_component_get_drvdata(component); + unsigned int width = (params_width(params) / 8) - 1; + unsigned int val = 0; + + cs42l42->srate = params_rate(params); + + switch(substream->stream) { + case SNDRV_PCM_STREAM_PLAYBACK: + val |= width << CS42L42_ASP_RX_CH_RES_SHIFT; + /* channel 1 on low LRCLK */ + snd_soc_component_update_bits(component, CS42L42_ASP_RX_DAI0_CH1_AP_RES, + CS42L42_ASP_RX_CH_AP_MASK | + CS42L42_ASP_RX_CH_RES_MASK, val); + /* Channel 2 on high LRCLK */ + val |= CS42L42_ASP_RX_CH_AP_HI << CS42L42_ASP_RX_CH_AP_SHIFT; + snd_soc_component_update_bits(component, CS42L42_ASP_RX_DAI0_CH2_AP_RES, + CS42L42_ASP_RX_CH_AP_MASK | + CS42L42_ASP_RX_CH_RES_MASK, val); + break; + default: + break; + } + + return cs42l42_pll_config(component); +} + +static int cs42l42_set_sysclk(struct snd_soc_dai *dai, + int clk_id, unsigned int freq, int dir) +{ + struct snd_soc_component *component = dai->component; + struct cs42l42_private *cs42l42 = snd_soc_component_get_drvdata(component); + + cs42l42->sclk = freq; + + return 0; +} + +static int cs42l42_digital_mute(struct snd_soc_dai *dai, int mute) +{ + struct snd_soc_component *component = dai->component; + unsigned int regval; + u8 fullScaleVol; + + if (mute) { + /* Mark SCLK as not present to turn on the internal + * oscillator. + */ + snd_soc_component_update_bits(component, CS42L42_OSC_SWITCH, + CS42L42_SCLK_PRESENT_MASK, 0); + + snd_soc_component_update_bits(component, CS42L42_PLL_CTL1, + CS42L42_PLL_START_MASK, + 0 << CS42L42_PLL_START_SHIFT); + + /* Mute the headphone */ + snd_soc_component_update_bits(component, CS42L42_HP_CTL, + CS42L42_HP_ANA_AMUTE_MASK | + CS42L42_HP_ANA_BMUTE_MASK, + CS42L42_HP_ANA_AMUTE_MASK | + CS42L42_HP_ANA_BMUTE_MASK); + } else { + snd_soc_component_update_bits(component, CS42L42_PLL_CTL1, + CS42L42_PLL_START_MASK, + 1 << CS42L42_PLL_START_SHIFT); + /* Read the headphone load */ + regval = snd_soc_component_read32(component, CS42L42_LOAD_DET_RCSTAT); + if (((regval & CS42L42_RLA_STAT_MASK) >> + CS42L42_RLA_STAT_SHIFT) == CS42L42_RLA_STAT_15_OHM) { + fullScaleVol = CS42L42_HP_FULL_SCALE_VOL_MASK; + } else { + fullScaleVol = 0; + } + + /* Un-mute the headphone, set the full scale volume flag */ + snd_soc_component_update_bits(component, CS42L42_HP_CTL, + CS42L42_HP_ANA_AMUTE_MASK | + CS42L42_HP_ANA_BMUTE_MASK | + CS42L42_HP_FULL_SCALE_VOL_MASK, fullScaleVol); + + /* Mark SCLK as present, turn off internal oscillator */ + snd_soc_component_update_bits(component, CS42L42_OSC_SWITCH, + CS42L42_SCLK_PRESENT_MASK, + CS42L42_SCLK_PRESENT_MASK); + } + + return 0; +} + +#define CS42L42_FORMATS (SNDRV_PCM_FMTBIT_S16_LE |\ + SNDRV_PCM_FMTBIT_S24_LE |\ + SNDRV_PCM_FMTBIT_S32_LE ) + + +static const struct snd_soc_dai_ops cs42l42_ops = { + .hw_params = cs42l42_pcm_hw_params, + .set_fmt = cs42l42_set_dai_fmt, + .set_sysclk = cs42l42_set_sysclk, + .digital_mute = cs42l42_digital_mute +}; + +static struct snd_soc_dai_driver cs42l42_dai = { + .name = "cs42l42", + .playback = { + .stream_name = "Playback", + .channels_min = 1, + .channels_max = 2, + .rates = SNDRV_PCM_RATE_8000_192000, + .formats = CS42L42_FORMATS, + }, + .capture = { + .stream_name = "Capture", + .channels_min = 1, + .channels_max = 2, + .rates = SNDRV_PCM_RATE_8000_192000, + .formats = CS42L42_FORMATS, + }, + .ops = &cs42l42_ops, +}; + +static void cs42l42_process_hs_type_detect(struct cs42l42_private *cs42l42) +{ + unsigned int hs_det_status; + unsigned int int_status; + + /* Mask the auto detect interrupt */ + regmap_update_bits(cs42l42->regmap, + CS42L42_CODEC_INT_MASK, + CS42L42_PDN_DONE_MASK | + CS42L42_HSDET_AUTO_DONE_MASK, + (1 << CS42L42_PDN_DONE_SHIFT) | + (1 << CS42L42_HSDET_AUTO_DONE_SHIFT)); + + /* Set hs detect to automatic, disabled mode */ + regmap_update_bits(cs42l42->regmap, + CS42L42_HSDET_CTL2, + CS42L42_HSDET_CTRL_MASK | + CS42L42_HSDET_SET_MASK | + CS42L42_HSBIAS_REF_MASK | + CS42L42_HSDET_AUTO_TIME_MASK, + (2 << CS42L42_HSDET_CTRL_SHIFT) | + (2 << CS42L42_HSDET_SET_SHIFT) | + (0 << CS42L42_HSBIAS_REF_SHIFT) | + (3 << CS42L42_HSDET_AUTO_TIME_SHIFT)); + + /* Read and save the hs detection result */ + regmap_read(cs42l42->regmap, CS42L42_HS_DET_STATUS, &hs_det_status); + + cs42l42->hs_type = (hs_det_status & CS42L42_HSDET_TYPE_MASK) >> + CS42L42_HSDET_TYPE_SHIFT; + + /* Set up button detection */ + if ((cs42l42->hs_type == CS42L42_PLUG_CTIA) || + (cs42l42->hs_type == CS42L42_PLUG_OMTP)) { + /* Set auto HS bias settings to default */ + regmap_update_bits(cs42l42->regmap, + CS42L42_HSBIAS_SC_AUTOCTL, + CS42L42_HSBIAS_SENSE_EN_MASK | + CS42L42_AUTO_HSBIAS_HIZ_MASK | + CS42L42_TIP_SENSE_EN_MASK | + CS42L42_HSBIAS_SENSE_TRIP_MASK, + (0 << CS42L42_HSBIAS_SENSE_EN_SHIFT) | + (0 << CS42L42_AUTO_HSBIAS_HIZ_SHIFT) | + (0 << CS42L42_TIP_SENSE_EN_SHIFT) | + (3 << CS42L42_HSBIAS_SENSE_TRIP_SHIFT)); + + /* Set up hs detect level sensitivity */ + regmap_update_bits(cs42l42->regmap, + CS42L42_MIC_DET_CTL1, + CS42L42_LATCH_TO_VP_MASK | + CS42L42_EVENT_STAT_SEL_MASK | + CS42L42_HS_DET_LEVEL_MASK, + (1 << CS42L42_LATCH_TO_VP_SHIFT) | + (0 << CS42L42_EVENT_STAT_SEL_SHIFT) | + (cs42l42->bias_thresholds[0] << + CS42L42_HS_DET_LEVEL_SHIFT)); + + /* Set auto HS bias settings to default */ + regmap_update_bits(cs42l42->regmap, + CS42L42_HSBIAS_SC_AUTOCTL, + CS42L42_HSBIAS_SENSE_EN_MASK | + CS42L42_AUTO_HSBIAS_HIZ_MASK | + CS42L42_TIP_SENSE_EN_MASK | + CS42L42_HSBIAS_SENSE_TRIP_MASK, + (1 << CS42L42_HSBIAS_SENSE_EN_SHIFT) | + (1 << CS42L42_AUTO_HSBIAS_HIZ_SHIFT) | + (0 << CS42L42_TIP_SENSE_EN_SHIFT) | + (3 << CS42L42_HSBIAS_SENSE_TRIP_SHIFT)); + + /* Turn on level detect circuitry */ + regmap_update_bits(cs42l42->regmap, + CS42L42_MISC_DET_CTL, + CS42L42_DETECT_MODE_MASK | + CS42L42_HSBIAS_CTL_MASK | + CS42L42_PDN_MIC_LVL_DET_MASK, + (0 << CS42L42_DETECT_MODE_SHIFT) | + (3 << CS42L42_HSBIAS_CTL_SHIFT) | + (0 << CS42L42_PDN_MIC_LVL_DET_SHIFT)); + + msleep(cs42l42->btn_det_init_dbnce); + + /* Clear any button interrupts before unmasking them */ + regmap_read(cs42l42->regmap, CS42L42_DET_INT_STATUS2, + &int_status); + + /* Unmask button detect interrupts */ + regmap_update_bits(cs42l42->regmap, + CS42L42_DET_INT2_MASK, + CS42L42_M_DETECT_TF_MASK | + CS42L42_M_DETECT_FT_MASK | + CS42L42_M_HSBIAS_HIZ_MASK | + CS42L42_M_SHORT_RLS_MASK | + CS42L42_M_SHORT_DET_MASK, + (0 << CS42L42_M_DETECT_TF_SHIFT) | + (0 << CS42L42_M_DETECT_FT_SHIFT) | + (0 << CS42L42_M_HSBIAS_HIZ_SHIFT) | + (1 << CS42L42_M_SHORT_RLS_SHIFT) | + (1 << CS42L42_M_SHORT_DET_SHIFT)); + } else { + /* Make sure button detect and HS bias circuits are off */ + regmap_update_bits(cs42l42->regmap, + CS42L42_MISC_DET_CTL, + CS42L42_DETECT_MODE_MASK | + CS42L42_HSBIAS_CTL_MASK | + CS42L42_PDN_MIC_LVL_DET_MASK, + (0 << CS42L42_DETECT_MODE_SHIFT) | + (1 << CS42L42_HSBIAS_CTL_SHIFT) | + (1 << CS42L42_PDN_MIC_LVL_DET_SHIFT)); + } + + regmap_update_bits(cs42l42->regmap, + CS42L42_DAC_CTL2, + CS42L42_HPOUT_PULLDOWN_MASK | + CS42L42_HPOUT_LOAD_MASK | + CS42L42_HPOUT_CLAMP_MASK | + CS42L42_DAC_HPF_EN_MASK | + CS42L42_DAC_MON_EN_MASK, + (0 << CS42L42_HPOUT_PULLDOWN_SHIFT) | + (0 << CS42L42_HPOUT_LOAD_SHIFT) | + (0 << CS42L42_HPOUT_CLAMP_SHIFT) | + (1 << CS42L42_DAC_HPF_EN_SHIFT) | + (0 << CS42L42_DAC_MON_EN_SHIFT)); + + /* Unmask tip sense interrupts */ + regmap_update_bits(cs42l42->regmap, + CS42L42_TSRS_PLUG_INT_MASK, + CS42L42_RS_PLUG_MASK | + CS42L42_RS_UNPLUG_MASK | + CS42L42_TS_PLUG_MASK | + CS42L42_TS_UNPLUG_MASK, + (1 << CS42L42_RS_PLUG_SHIFT) | + (1 << CS42L42_RS_UNPLUG_SHIFT) | + (0 << CS42L42_TS_PLUG_SHIFT) | + (0 << CS42L42_TS_UNPLUG_SHIFT)); +} + +static void cs42l42_init_hs_type_detect(struct cs42l42_private *cs42l42) +{ + /* Mask tip sense interrupts */ + regmap_update_bits(cs42l42->regmap, + CS42L42_TSRS_PLUG_INT_MASK, + CS42L42_RS_PLUG_MASK | + CS42L42_RS_UNPLUG_MASK | + CS42L42_TS_PLUG_MASK | + CS42L42_TS_UNPLUG_MASK, + (1 << CS42L42_RS_PLUG_SHIFT) | + (1 << CS42L42_RS_UNPLUG_SHIFT) | + (1 << CS42L42_TS_PLUG_SHIFT) | + (1 << CS42L42_TS_UNPLUG_SHIFT)); + + /* Make sure button detect and HS bias circuits are off */ + regmap_update_bits(cs42l42->regmap, + CS42L42_MISC_DET_CTL, + CS42L42_DETECT_MODE_MASK | + CS42L42_HSBIAS_CTL_MASK | + CS42L42_PDN_MIC_LVL_DET_MASK, + (0 << CS42L42_DETECT_MODE_SHIFT) | + (1 << CS42L42_HSBIAS_CTL_SHIFT) | + (1 << CS42L42_PDN_MIC_LVL_DET_SHIFT)); + + /* Set auto HS bias settings to default */ + regmap_update_bits(cs42l42->regmap, + CS42L42_HSBIAS_SC_AUTOCTL, + CS42L42_HSBIAS_SENSE_EN_MASK | + CS42L42_AUTO_HSBIAS_HIZ_MASK | + CS42L42_TIP_SENSE_EN_MASK | + CS42L42_HSBIAS_SENSE_TRIP_MASK, + (0 << CS42L42_HSBIAS_SENSE_EN_SHIFT) | + (0 << CS42L42_AUTO_HSBIAS_HIZ_SHIFT) | + (0 << CS42L42_TIP_SENSE_EN_SHIFT) | + (3 << CS42L42_HSBIAS_SENSE_TRIP_SHIFT)); + + /* Set hs detect to manual, disabled mode */ + regmap_update_bits(cs42l42->regmap, + CS42L42_HSDET_CTL2, + CS42L42_HSDET_CTRL_MASK | + CS42L42_HSDET_SET_MASK | + CS42L42_HSBIAS_REF_MASK | + CS42L42_HSDET_AUTO_TIME_MASK, + (0 << CS42L42_HSDET_CTRL_SHIFT) | + (2 << CS42L42_HSDET_SET_SHIFT) | + (0 << CS42L42_HSBIAS_REF_SHIFT) | + (3 << CS42L42_HSDET_AUTO_TIME_SHIFT)); + + regmap_update_bits(cs42l42->regmap, + CS42L42_DAC_CTL2, + CS42L42_HPOUT_PULLDOWN_MASK | + CS42L42_HPOUT_LOAD_MASK | + CS42L42_HPOUT_CLAMP_MASK | + CS42L42_DAC_HPF_EN_MASK | + CS42L42_DAC_MON_EN_MASK, + (8 << CS42L42_HPOUT_PULLDOWN_SHIFT) | + (0 << CS42L42_HPOUT_LOAD_SHIFT) | + (1 << CS42L42_HPOUT_CLAMP_SHIFT) | + (1 << CS42L42_DAC_HPF_EN_SHIFT) | + (1 << CS42L42_DAC_MON_EN_SHIFT)); + + /* Power up HS bias to 2.7V */ + regmap_update_bits(cs42l42->regmap, + CS42L42_MISC_DET_CTL, + CS42L42_DETECT_MODE_MASK | + CS42L42_HSBIAS_CTL_MASK | + CS42L42_PDN_MIC_LVL_DET_MASK, + (0 << CS42L42_DETECT_MODE_SHIFT) | + (3 << CS42L42_HSBIAS_CTL_SHIFT) | + (1 << CS42L42_PDN_MIC_LVL_DET_SHIFT)); + + /* Wait for HS bias to ramp up */ + msleep(cs42l42->hs_bias_ramp_time); + + /* Unmask auto detect interrupt */ + regmap_update_bits(cs42l42->regmap, + CS42L42_CODEC_INT_MASK, + CS42L42_PDN_DONE_MASK | + CS42L42_HSDET_AUTO_DONE_MASK, + (1 << CS42L42_PDN_DONE_SHIFT) | + (0 << CS42L42_HSDET_AUTO_DONE_SHIFT)); + + /* Set hs detect to automatic, enabled mode */ + regmap_update_bits(cs42l42->regmap, + CS42L42_HSDET_CTL2, + CS42L42_HSDET_CTRL_MASK | + CS42L42_HSDET_SET_MASK | + CS42L42_HSBIAS_REF_MASK | + CS42L42_HSDET_AUTO_TIME_MASK, + (3 << CS42L42_HSDET_CTRL_SHIFT) | + (2 << CS42L42_HSDET_SET_SHIFT) | + (0 << CS42L42_HSBIAS_REF_SHIFT) | + (3 << CS42L42_HSDET_AUTO_TIME_SHIFT)); +} + +static void cs42l42_cancel_hs_type_detect(struct cs42l42_private *cs42l42) +{ + /* Mask button detect interrupts */ + regmap_update_bits(cs42l42->regmap, + CS42L42_DET_INT2_MASK, + CS42L42_M_DETECT_TF_MASK | + CS42L42_M_DETECT_FT_MASK | + CS42L42_M_HSBIAS_HIZ_MASK | + CS42L42_M_SHORT_RLS_MASK | + CS42L42_M_SHORT_DET_MASK, + (1 << CS42L42_M_DETECT_TF_SHIFT) | + (1 << CS42L42_M_DETECT_FT_SHIFT) | + (1 << CS42L42_M_HSBIAS_HIZ_SHIFT) | + (1 << CS42L42_M_SHORT_RLS_SHIFT) | + (1 << CS42L42_M_SHORT_DET_SHIFT)); + + /* Ground HS bias */ + regmap_update_bits(cs42l42->regmap, + CS42L42_MISC_DET_CTL, + CS42L42_DETECT_MODE_MASK | + CS42L42_HSBIAS_CTL_MASK | + CS42L42_PDN_MIC_LVL_DET_MASK, + (0 << CS42L42_DETECT_MODE_SHIFT) | + (1 << CS42L42_HSBIAS_CTL_SHIFT) | + (1 << CS42L42_PDN_MIC_LVL_DET_SHIFT)); + + /* Set auto HS bias settings to default */ + regmap_update_bits(cs42l42->regmap, + CS42L42_HSBIAS_SC_AUTOCTL, + CS42L42_HSBIAS_SENSE_EN_MASK | + CS42L42_AUTO_HSBIAS_HIZ_MASK | + CS42L42_TIP_SENSE_EN_MASK | + CS42L42_HSBIAS_SENSE_TRIP_MASK, + (0 << CS42L42_HSBIAS_SENSE_EN_SHIFT) | + (0 << CS42L42_AUTO_HSBIAS_HIZ_SHIFT) | + (0 << CS42L42_TIP_SENSE_EN_SHIFT) | + (3 << CS42L42_HSBIAS_SENSE_TRIP_SHIFT)); + + /* Set hs detect to manual, disabled mode */ + regmap_update_bits(cs42l42->regmap, + CS42L42_HSDET_CTL2, + CS42L42_HSDET_CTRL_MASK | + CS42L42_HSDET_SET_MASK | + CS42L42_HSBIAS_REF_MASK | + CS42L42_HSDET_AUTO_TIME_MASK, + (0 << CS42L42_HSDET_CTRL_SHIFT) | + (2 << CS42L42_HSDET_SET_SHIFT) | + (0 << CS42L42_HSBIAS_REF_SHIFT) | + (3 << CS42L42_HSDET_AUTO_TIME_SHIFT)); +} + +static void cs42l42_handle_button_press(struct cs42l42_private *cs42l42) +{ + int bias_level; + unsigned int detect_status; + + /* Mask button detect interrupts */ + regmap_update_bits(cs42l42->regmap, + CS42L42_DET_INT2_MASK, + CS42L42_M_DETECT_TF_MASK | + CS42L42_M_DETECT_FT_MASK | + CS42L42_M_HSBIAS_HIZ_MASK | + CS42L42_M_SHORT_RLS_MASK | + CS42L42_M_SHORT_DET_MASK, + (1 << CS42L42_M_DETECT_TF_SHIFT) | + (1 << CS42L42_M_DETECT_FT_SHIFT) | + (1 << CS42L42_M_HSBIAS_HIZ_SHIFT) | + (1 << CS42L42_M_SHORT_RLS_SHIFT) | + (1 << CS42L42_M_SHORT_DET_SHIFT)); + + usleep_range(cs42l42->btn_det_event_dbnce * 1000, + cs42l42->btn_det_event_dbnce * 2000); + + /* Test all 4 level detect biases */ + bias_level = 1; + do { + /* Adjust button detect level sensitivity */ + regmap_update_bits(cs42l42->regmap, + CS42L42_MIC_DET_CTL1, + CS42L42_LATCH_TO_VP_MASK | + CS42L42_EVENT_STAT_SEL_MASK | + CS42L42_HS_DET_LEVEL_MASK, + (1 << CS42L42_LATCH_TO_VP_SHIFT) | + (0 << CS42L42_EVENT_STAT_SEL_SHIFT) | + (cs42l42->bias_thresholds[bias_level] << + CS42L42_HS_DET_LEVEL_SHIFT)); + + regmap_read(cs42l42->regmap, CS42L42_DET_STATUS2, + &detect_status); + } while ((detect_status & CS42L42_HS_TRUE_MASK) && + (++bias_level < CS42L42_NUM_BIASES)); + + switch (bias_level) { + case 1: /* Function C button press */ + dev_dbg(cs42l42->component->dev, "Function C button press\n"); + break; + case 2: /* Function B button press */ + dev_dbg(cs42l42->component->dev, "Function B button press\n"); + break; + case 3: /* Function D button press */ + dev_dbg(cs42l42->component->dev, "Function D button press\n"); + break; + case 4: /* Function A button press */ + dev_dbg(cs42l42->component->dev, "Function A button press\n"); + break; + } + + /* Set button detect level sensitivity back to default */ + regmap_update_bits(cs42l42->regmap, + CS42L42_MIC_DET_CTL1, + CS42L42_LATCH_TO_VP_MASK | + CS42L42_EVENT_STAT_SEL_MASK | + CS42L42_HS_DET_LEVEL_MASK, + (1 << CS42L42_LATCH_TO_VP_SHIFT) | + (0 << CS42L42_EVENT_STAT_SEL_SHIFT) | + (cs42l42->bias_thresholds[0] << CS42L42_HS_DET_LEVEL_SHIFT)); + + /* Clear any button interrupts before unmasking them */ + regmap_read(cs42l42->regmap, CS42L42_DET_INT_STATUS2, + &detect_status); + + /* Unmask button detect interrupts */ + regmap_update_bits(cs42l42->regmap, + CS42L42_DET_INT2_MASK, + CS42L42_M_DETECT_TF_MASK | + CS42L42_M_DETECT_FT_MASK | + CS42L42_M_HSBIAS_HIZ_MASK | + CS42L42_M_SHORT_RLS_MASK | + CS42L42_M_SHORT_DET_MASK, + (0 << CS42L42_M_DETECT_TF_SHIFT) | + (0 << CS42L42_M_DETECT_FT_SHIFT) | + (0 << CS42L42_M_HSBIAS_HIZ_SHIFT) | + (1 << CS42L42_M_SHORT_RLS_SHIFT) | + (1 << CS42L42_M_SHORT_DET_SHIFT)); +} + +struct cs42l42_irq_params { + u16 status_addr; + u16 mask_addr; + u8 mask; +}; + +static const struct cs42l42_irq_params irq_params_table[] = { + {CS42L42_ADC_OVFL_STATUS, CS42L42_ADC_OVFL_INT_MASK, + CS42L42_ADC_OVFL_VAL_MASK}, + {CS42L42_MIXER_STATUS, CS42L42_MIXER_INT_MASK, + CS42L42_MIXER_VAL_MASK}, + {CS42L42_SRC_STATUS, CS42L42_SRC_INT_MASK, + CS42L42_SRC_VAL_MASK}, + {CS42L42_ASP_RX_STATUS, CS42L42_ASP_RX_INT_MASK, + CS42L42_ASP_RX_VAL_MASK}, + {CS42L42_ASP_TX_STATUS, CS42L42_ASP_TX_INT_MASK, + CS42L42_ASP_TX_VAL_MASK}, + {CS42L42_CODEC_STATUS, CS42L42_CODEC_INT_MASK, + CS42L42_CODEC_VAL_MASK}, + {CS42L42_DET_INT_STATUS1, CS42L42_DET_INT1_MASK, + CS42L42_DET_INT_VAL1_MASK}, + {CS42L42_DET_INT_STATUS2, CS42L42_DET_INT2_MASK, + CS42L42_DET_INT_VAL2_MASK}, + {CS42L42_SRCPL_INT_STATUS, CS42L42_SRCPL_INT_MASK, + CS42L42_SRCPL_VAL_MASK}, + {CS42L42_VPMON_STATUS, CS42L42_VPMON_INT_MASK, + CS42L42_VPMON_VAL_MASK}, + {CS42L42_PLL_LOCK_STATUS, CS42L42_PLL_LOCK_INT_MASK, + CS42L42_PLL_LOCK_VAL_MASK}, + {CS42L42_TSRS_PLUG_STATUS, CS42L42_TSRS_PLUG_INT_MASK, + CS42L42_TSRS_PLUG_VAL_MASK} +}; + +static irqreturn_t cs42l42_irq_thread(int irq, void *data) +{ + struct cs42l42_private *cs42l42 = (struct cs42l42_private *)data; + struct snd_soc_component *component = cs42l42->component; + unsigned int stickies[12]; + unsigned int masks[12]; + unsigned int current_plug_status; + unsigned int current_button_status; + unsigned int i; + + /* Read sticky registers to clear interurpt */ + for (i = 0; i < ARRAY_SIZE(stickies); i++) { + regmap_read(cs42l42->regmap, irq_params_table[i].status_addr, + &(stickies[i])); + regmap_read(cs42l42->regmap, irq_params_table[i].mask_addr, + &(masks[i])); + stickies[i] = stickies[i] & (~masks[i]) & + irq_params_table[i].mask; + } + + /* Read tip sense status before handling type detect */ + current_plug_status = (stickies[11] & + (CS42L42_TS_PLUG_MASK | CS42L42_TS_UNPLUG_MASK)) >> + CS42L42_TS_PLUG_SHIFT; + + /* Read button sense status */ + current_button_status = stickies[7] & + (CS42L42_M_DETECT_TF_MASK | + CS42L42_M_DETECT_FT_MASK | + CS42L42_M_HSBIAS_HIZ_MASK); + + /* Check auto-detect status */ + if ((~masks[5]) & irq_params_table[5].mask) { + if (stickies[5] & CS42L42_HSDET_AUTO_DONE_MASK) { + cs42l42_process_hs_type_detect(cs42l42); + dev_dbg(component->dev, + "Auto detect done (%d)\n", + cs42l42->hs_type); + } + } + + /* Check tip sense status */ + if ((~masks[11]) & irq_params_table[11].mask) { + switch (current_plug_status) { + case CS42L42_TS_PLUG: + if (cs42l42->plug_state != CS42L42_TS_PLUG) { + cs42l42->plug_state = CS42L42_TS_PLUG; + cs42l42_init_hs_type_detect(cs42l42); + } + break; + + case CS42L42_TS_UNPLUG: + if (cs42l42->plug_state != CS42L42_TS_UNPLUG) { + cs42l42->plug_state = CS42L42_TS_UNPLUG; + cs42l42_cancel_hs_type_detect(cs42l42); + dev_dbg(component->dev, + "Unplug event\n"); + } + break; + + default: + if (cs42l42->plug_state != CS42L42_TS_TRANS) + cs42l42->plug_state = CS42L42_TS_TRANS; + } + } + + /* Check button detect status */ + if ((~masks[7]) & irq_params_table[7].mask) { + if (!(current_button_status & + CS42L42_M_HSBIAS_HIZ_MASK)) { + + if (current_button_status & + CS42L42_M_DETECT_TF_MASK) { + dev_dbg(component->dev, + "Button released\n"); + } else if (current_button_status & + CS42L42_M_DETECT_FT_MASK) { + cs42l42_handle_button_press(cs42l42); + } + } + } + + return IRQ_HANDLED; +} + +static void cs42l42_set_interrupt_masks(struct cs42l42_private *cs42l42) +{ + regmap_update_bits(cs42l42->regmap, CS42L42_ADC_OVFL_INT_MASK, + CS42L42_ADC_OVFL_MASK, + (1 << CS42L42_ADC_OVFL_SHIFT)); + + regmap_update_bits(cs42l42->regmap, CS42L42_MIXER_INT_MASK, + CS42L42_MIX_CHB_OVFL_MASK | + CS42L42_MIX_CHA_OVFL_MASK | + CS42L42_EQ_OVFL_MASK | + CS42L42_EQ_BIQUAD_OVFL_MASK, + (1 << CS42L42_MIX_CHB_OVFL_SHIFT) | + (1 << CS42L42_MIX_CHA_OVFL_SHIFT) | + (1 << CS42L42_EQ_OVFL_SHIFT) | + (1 << CS42L42_EQ_BIQUAD_OVFL_SHIFT)); + + regmap_update_bits(cs42l42->regmap, CS42L42_SRC_INT_MASK, + CS42L42_SRC_ILK_MASK | + CS42L42_SRC_OLK_MASK | + CS42L42_SRC_IUNLK_MASK | + CS42L42_SRC_OUNLK_MASK, + (1 << CS42L42_SRC_ILK_SHIFT) | + (1 << CS42L42_SRC_OLK_SHIFT) | + (1 << CS42L42_SRC_IUNLK_SHIFT) | + (1 << CS42L42_SRC_OUNLK_SHIFT)); + + regmap_update_bits(cs42l42->regmap, CS42L42_ASP_RX_INT_MASK, + CS42L42_ASPRX_NOLRCK_MASK | + CS42L42_ASPRX_EARLY_MASK | + CS42L42_ASPRX_LATE_MASK | + CS42L42_ASPRX_ERROR_MASK | + CS42L42_ASPRX_OVLD_MASK, + (1 << CS42L42_ASPRX_NOLRCK_SHIFT) | + (1 << CS42L42_ASPRX_EARLY_SHIFT) | + (1 << CS42L42_ASPRX_LATE_SHIFT) | + (1 << CS42L42_ASPRX_ERROR_SHIFT) | + (1 << CS42L42_ASPRX_OVLD_SHIFT)); + + regmap_update_bits(cs42l42->regmap, CS42L42_ASP_TX_INT_MASK, + CS42L42_ASPTX_NOLRCK_MASK | + CS42L42_ASPTX_EARLY_MASK | + CS42L42_ASPTX_LATE_MASK | + CS42L42_ASPTX_SMERROR_MASK, + (1 << CS42L42_ASPTX_NOLRCK_SHIFT) | + (1 << CS42L42_ASPTX_EARLY_SHIFT) | + (1 << CS42L42_ASPTX_LATE_SHIFT) | + (1 << CS42L42_ASPTX_SMERROR_SHIFT)); + + regmap_update_bits(cs42l42->regmap, CS42L42_CODEC_INT_MASK, + CS42L42_PDN_DONE_MASK | + CS42L42_HSDET_AUTO_DONE_MASK, + (1 << CS42L42_PDN_DONE_SHIFT) | + (1 << CS42L42_HSDET_AUTO_DONE_SHIFT)); + + regmap_update_bits(cs42l42->regmap, CS42L42_SRCPL_INT_MASK, + CS42L42_SRCPL_ADC_LK_MASK | + CS42L42_SRCPL_DAC_LK_MASK | + CS42L42_SRCPL_ADC_UNLK_MASK | + CS42L42_SRCPL_DAC_UNLK_MASK, + (1 << CS42L42_SRCPL_ADC_LK_SHIFT) | + (1 << CS42L42_SRCPL_DAC_LK_SHIFT) | + (1 << CS42L42_SRCPL_ADC_UNLK_SHIFT) | + (1 << CS42L42_SRCPL_DAC_UNLK_SHIFT)); + + regmap_update_bits(cs42l42->regmap, CS42L42_DET_INT1_MASK, + CS42L42_TIP_SENSE_UNPLUG_MASK | + CS42L42_TIP_SENSE_PLUG_MASK | + CS42L42_HSBIAS_SENSE_MASK, + (1 << CS42L42_TIP_SENSE_UNPLUG_SHIFT) | + (1 << CS42L42_TIP_SENSE_PLUG_SHIFT) | + (1 << CS42L42_HSBIAS_SENSE_SHIFT)); + + regmap_update_bits(cs42l42->regmap, CS42L42_DET_INT2_MASK, + CS42L42_M_DETECT_TF_MASK | + CS42L42_M_DETECT_FT_MASK | + CS42L42_M_HSBIAS_HIZ_MASK | + CS42L42_M_SHORT_RLS_MASK | + CS42L42_M_SHORT_DET_MASK, + (1 << CS42L42_M_DETECT_TF_SHIFT) | + (1 << CS42L42_M_DETECT_FT_SHIFT) | + (1 << CS42L42_M_HSBIAS_HIZ_SHIFT) | + (1 << CS42L42_M_SHORT_RLS_SHIFT) | + (1 << CS42L42_M_SHORT_DET_SHIFT)); + + regmap_update_bits(cs42l42->regmap, CS42L42_VPMON_INT_MASK, + CS42L42_VPMON_MASK, + (1 << CS42L42_VPMON_SHIFT)); + + regmap_update_bits(cs42l42->regmap, CS42L42_PLL_LOCK_INT_MASK, + CS42L42_PLL_LOCK_MASK, + (1 << CS42L42_PLL_LOCK_SHIFT)); + + regmap_update_bits(cs42l42->regmap, CS42L42_TSRS_PLUG_INT_MASK, + CS42L42_RS_PLUG_MASK | + CS42L42_RS_UNPLUG_MASK | + CS42L42_TS_PLUG_MASK | + CS42L42_TS_UNPLUG_MASK, + (1 << CS42L42_RS_PLUG_SHIFT) | + (1 << CS42L42_RS_UNPLUG_SHIFT) | + (0 << CS42L42_TS_PLUG_SHIFT) | + (0 << CS42L42_TS_UNPLUG_SHIFT)); +} + +static void cs42l42_setup_hs_type_detect(struct cs42l42_private *cs42l42) +{ + unsigned int reg; + + cs42l42->hs_type = CS42L42_PLUG_INVALID; + + /* Latch analog controls to VP power domain */ + regmap_update_bits(cs42l42->regmap, CS42L42_MIC_DET_CTL1, + CS42L42_LATCH_TO_VP_MASK | + CS42L42_EVENT_STAT_SEL_MASK | + CS42L42_HS_DET_LEVEL_MASK, + (1 << CS42L42_LATCH_TO_VP_SHIFT) | + (0 << CS42L42_EVENT_STAT_SEL_SHIFT) | + (cs42l42->bias_thresholds[0] << + CS42L42_HS_DET_LEVEL_SHIFT)); + + /* Remove ground noise-suppression clamps */ + regmap_update_bits(cs42l42->regmap, + CS42L42_HS_CLAMP_DISABLE, + CS42L42_HS_CLAMP_DISABLE_MASK, + (1 << CS42L42_HS_CLAMP_DISABLE_SHIFT)); + + /* Enable the tip sense circuit */ + regmap_update_bits(cs42l42->regmap, CS42L42_TIPSENSE_CTL, + CS42L42_TIP_SENSE_CTRL_MASK | + CS42L42_TIP_SENSE_INV_MASK | + CS42L42_TIP_SENSE_DEBOUNCE_MASK, + (3 << CS42L42_TIP_SENSE_CTRL_SHIFT) | + (0 << CS42L42_TIP_SENSE_INV_SHIFT) | + (2 << CS42L42_TIP_SENSE_DEBOUNCE_SHIFT)); + + /* Save the initial status of the tip sense */ + regmap_read(cs42l42->regmap, + CS42L42_TSRS_PLUG_STATUS, + ®); + cs42l42->plug_state = (((char) reg) & + (CS42L42_TS_PLUG_MASK | CS42L42_TS_UNPLUG_MASK)) >> + CS42L42_TS_PLUG_SHIFT; +} + +static const unsigned int threshold_defaults[] = { + CS42L42_HS_DET_LEVEL_15, + CS42L42_HS_DET_LEVEL_8, + CS42L42_HS_DET_LEVEL_4, + CS42L42_HS_DET_LEVEL_1 +}; + +static int cs42l42_handle_device_data(struct i2c_client *i2c_client, + struct cs42l42_private *cs42l42) +{ + struct device_node *np = i2c_client->dev.of_node; + unsigned int val; + unsigned int thresholds[CS42L42_NUM_BIASES]; + int ret; + int i; + + ret = of_property_read_u32(np, "cirrus,ts-inv", &val); + + if (!ret) { + switch (val) { + case CS42L42_TS_INV_EN: + case CS42L42_TS_INV_DIS: + cs42l42->ts_inv = val; + break; + default: + dev_err(&i2c_client->dev, + "Wrong cirrus,ts-inv DT value %d\n", + val); + cs42l42->ts_inv = CS42L42_TS_INV_DIS; + } + } else { + cs42l42->ts_inv = CS42L42_TS_INV_DIS; + } + + regmap_update_bits(cs42l42->regmap, CS42L42_TSENSE_CTL, + CS42L42_TS_INV_MASK, + (cs42l42->ts_inv << CS42L42_TS_INV_SHIFT)); + + ret = of_property_read_u32(np, "cirrus,ts-dbnc-rise", &val); + + if (!ret) { + switch (val) { + case CS42L42_TS_DBNCE_0: + case CS42L42_TS_DBNCE_125: + case CS42L42_TS_DBNCE_250: + case CS42L42_TS_DBNCE_500: + case CS42L42_TS_DBNCE_750: + case CS42L42_TS_DBNCE_1000: + case CS42L42_TS_DBNCE_1250: + case CS42L42_TS_DBNCE_1500: + cs42l42->ts_dbnc_rise = val; + break; + default: + dev_err(&i2c_client->dev, + "Wrong cirrus,ts-dbnc-rise DT value %d\n", + val); + cs42l42->ts_dbnc_rise = CS42L42_TS_DBNCE_1000; + } + } else { + cs42l42->ts_dbnc_rise = CS42L42_TS_DBNCE_1000; + } + + regmap_update_bits(cs42l42->regmap, CS42L42_TSENSE_CTL, + CS42L42_TS_RISE_DBNCE_TIME_MASK, + (cs42l42->ts_dbnc_rise << + CS42L42_TS_RISE_DBNCE_TIME_SHIFT)); + + ret = of_property_read_u32(np, "cirrus,ts-dbnc-fall", &val); + + if (!ret) { + switch (val) { + case CS42L42_TS_DBNCE_0: + case CS42L42_TS_DBNCE_125: + case CS42L42_TS_DBNCE_250: + case CS42L42_TS_DBNCE_500: + case CS42L42_TS_DBNCE_750: + case CS42L42_TS_DBNCE_1000: + case CS42L42_TS_DBNCE_1250: + case CS42L42_TS_DBNCE_1500: + cs42l42->ts_dbnc_fall = val; + break; + default: + dev_err(&i2c_client->dev, + "Wrong cirrus,ts-dbnc-fall DT value %d\n", + val); + cs42l42->ts_dbnc_fall = CS42L42_TS_DBNCE_0; + } + } else { + cs42l42->ts_dbnc_fall = CS42L42_TS_DBNCE_0; + } + + regmap_update_bits(cs42l42->regmap, CS42L42_TSENSE_CTL, + CS42L42_TS_FALL_DBNCE_TIME_MASK, + (cs42l42->ts_dbnc_fall << + CS42L42_TS_FALL_DBNCE_TIME_SHIFT)); + + ret = of_property_read_u32(np, "cirrus,btn-det-init-dbnce", &val); + + if (!ret) { + if ((val >= CS42L42_BTN_DET_INIT_DBNCE_MIN) && + (val <= CS42L42_BTN_DET_INIT_DBNCE_MAX)) + cs42l42->btn_det_init_dbnce = val; + else { + dev_err(&i2c_client->dev, + "Wrong cirrus,btn-det-init-dbnce DT value %d\n", + val); + cs42l42->btn_det_init_dbnce = + CS42L42_BTN_DET_INIT_DBNCE_DEFAULT; + } + } else { + cs42l42->btn_det_init_dbnce = + CS42L42_BTN_DET_INIT_DBNCE_DEFAULT; + } + + ret = of_property_read_u32(np, "cirrus,btn-det-event-dbnce", &val); + + if (!ret) { + if ((val >= CS42L42_BTN_DET_EVENT_DBNCE_MIN) && + (val <= CS42L42_BTN_DET_EVENT_DBNCE_MAX)) + cs42l42->btn_det_event_dbnce = val; + else { + dev_err(&i2c_client->dev, + "Wrong cirrus,btn-det-event-dbnce DT value %d\n", val); + cs42l42->btn_det_event_dbnce = + CS42L42_BTN_DET_EVENT_DBNCE_DEFAULT; + } + } else { + cs42l42->btn_det_event_dbnce = + CS42L42_BTN_DET_EVENT_DBNCE_DEFAULT; + } + + ret = of_property_read_u32_array(np, "cirrus,bias-lvls", + (u32 *)thresholds, CS42L42_NUM_BIASES); + + if (!ret) { + for (i = 0; i < CS42L42_NUM_BIASES; i++) { + if ((thresholds[i] >= CS42L42_HS_DET_LEVEL_MIN) && + (thresholds[i] <= CS42L42_HS_DET_LEVEL_MAX)) + cs42l42->bias_thresholds[i] = thresholds[i]; + else { + dev_err(&i2c_client->dev, + "Wrong cirrus,bias-lvls[%d] DT value %d\n", i, + thresholds[i]); + cs42l42->bias_thresholds[i] = + threshold_defaults[i]; + } + } + } else { + for (i = 0; i < CS42L42_NUM_BIASES; i++) + cs42l42->bias_thresholds[i] = threshold_defaults[i]; + } + + ret = of_property_read_u32(np, "cirrus,hs-bias-ramp-rate", &val); + + if (!ret) { + switch (val) { + case CS42L42_HSBIAS_RAMP_FAST_RISE_SLOW_FALL: + cs42l42->hs_bias_ramp_rate = val; + cs42l42->hs_bias_ramp_time = CS42L42_HSBIAS_RAMP_TIME0; + break; + case CS42L42_HSBIAS_RAMP_FAST: + cs42l42->hs_bias_ramp_rate = val; + cs42l42->hs_bias_ramp_time = CS42L42_HSBIAS_RAMP_TIME1; + break; + case CS42L42_HSBIAS_RAMP_SLOW: + cs42l42->hs_bias_ramp_rate = val; + cs42l42->hs_bias_ramp_time = CS42L42_HSBIAS_RAMP_TIME2; + break; + case CS42L42_HSBIAS_RAMP_SLOWEST: + cs42l42->hs_bias_ramp_rate = val; + cs42l42->hs_bias_ramp_time = CS42L42_HSBIAS_RAMP_TIME3; + break; + default: + dev_err(&i2c_client->dev, + "Wrong cirrus,hs-bias-ramp-rate DT value %d\n", + val); + cs42l42->hs_bias_ramp_rate = CS42L42_HSBIAS_RAMP_SLOW; + cs42l42->hs_bias_ramp_time = CS42L42_HSBIAS_RAMP_TIME2; + } + } else { + cs42l42->hs_bias_ramp_rate = CS42L42_HSBIAS_RAMP_SLOW; + cs42l42->hs_bias_ramp_time = CS42L42_HSBIAS_RAMP_TIME2; + } + + regmap_update_bits(cs42l42->regmap, CS42L42_HS_BIAS_CTL, + CS42L42_HSBIAS_RAMP_MASK, + (cs42l42->hs_bias_ramp_rate << + CS42L42_HSBIAS_RAMP_SHIFT)); + + return 0; +} + +static int cs42l42_i2c_probe(struct i2c_client *i2c_client, + const struct i2c_device_id *id) +{ + struct cs42l42_private *cs42l42; + int ret, i; + unsigned int devid = 0; + unsigned int reg; + + cs42l42 = devm_kzalloc(&i2c_client->dev, sizeof(struct cs42l42_private), + GFP_KERNEL); + if (!cs42l42) + return -ENOMEM; + + i2c_set_clientdata(i2c_client, cs42l42); + + cs42l42->regmap = devm_regmap_init_i2c(i2c_client, &cs42l42_regmap); + if (IS_ERR(cs42l42->regmap)) { + ret = PTR_ERR(cs42l42->regmap); + dev_err(&i2c_client->dev, "regmap_init() failed: %d\n", ret); + return ret; + } + + for (i = 0; i < ARRAY_SIZE(cs42l42->supplies); i++) + cs42l42->supplies[i].supply = cs42l42_supply_names[i]; + + ret = devm_regulator_bulk_get(&i2c_client->dev, + ARRAY_SIZE(cs42l42->supplies), + cs42l42->supplies); + if (ret != 0) { + dev_err(&i2c_client->dev, + "Failed to request supplies: %d\n", ret); + return ret; + } + + ret = regulator_bulk_enable(ARRAY_SIZE(cs42l42->supplies), + cs42l42->supplies); + if (ret != 0) { + dev_err(&i2c_client->dev, + "Failed to enable supplies: %d\n", ret); + return ret; + } + + /* Reset the Device */ + cs42l42->reset_gpio = devm_gpiod_get_optional(&i2c_client->dev, + "reset", GPIOD_OUT_LOW); + if (IS_ERR(cs42l42->reset_gpio)) + return PTR_ERR(cs42l42->reset_gpio); + + if (cs42l42->reset_gpio) { + dev_dbg(&i2c_client->dev, "Found reset GPIO\n"); + gpiod_set_value_cansleep(cs42l42->reset_gpio, 1); + } + usleep_range(CS42L42_BOOT_TIME_US, CS42L42_BOOT_TIME_US * 2); + + /* Request IRQ */ + ret = devm_request_threaded_irq(&i2c_client->dev, + i2c_client->irq, + NULL, cs42l42_irq_thread, + IRQF_ONESHOT | IRQF_TRIGGER_LOW, + "cs42l42", cs42l42); + if (ret == -EPROBE_DEFER) + goto err_disable; + else if (ret != 0) + dev_err(&i2c_client->dev, + "Failed to request IRQ: %d\n", ret); + + /* initialize codec */ + ret = regmap_read(cs42l42->regmap, CS42L42_DEVID_AB, ®); + devid = (reg & 0xFF) << 12; + + ret = regmap_read(cs42l42->regmap, CS42L42_DEVID_CD, ®); + devid |= (reg & 0xFF) << 4; + + ret = regmap_read(cs42l42->regmap, CS42L42_DEVID_E, ®); + devid |= (reg & 0xF0) >> 4; + + if (devid != CS42L42_CHIP_ID) { + ret = -ENODEV; + dev_err(&i2c_client->dev, + "CS42L42 Device ID (%X). Expected %X\n", + devid, CS42L42_CHIP_ID); + return ret; + } + + ret = regmap_read(cs42l42->regmap, CS42L42_REVID, ®); + if (ret < 0) { + dev_err(&i2c_client->dev, "Get Revision ID failed\n"); + return ret; + } + + dev_info(&i2c_client->dev, + "Cirrus Logic CS42L42, Revision: %02X\n", reg & 0xFF); + + /* Power up the codec */ + regmap_update_bits(cs42l42->regmap, CS42L42_PWR_CTL1, + CS42L42_ASP_DAO_PDN_MASK | + CS42L42_ASP_DAI_PDN_MASK | + CS42L42_MIXER_PDN_MASK | + CS42L42_EQ_PDN_MASK | + CS42L42_HP_PDN_MASK | + CS42L42_ADC_PDN_MASK | + CS42L42_PDN_ALL_MASK, + (1 << CS42L42_ASP_DAO_PDN_SHIFT) | + (1 << CS42L42_ASP_DAI_PDN_SHIFT) | + (1 << CS42L42_MIXER_PDN_SHIFT) | + (1 << CS42L42_EQ_PDN_SHIFT) | + (1 << CS42L42_HP_PDN_SHIFT) | + (1 << CS42L42_ADC_PDN_SHIFT) | + (0 << CS42L42_PDN_ALL_SHIFT)); + + if (i2c_client->dev.of_node) { + ret = cs42l42_handle_device_data(i2c_client, cs42l42); + if (ret != 0) + return ret; + } + + /* Setup headset detection */ + cs42l42_setup_hs_type_detect(cs42l42); + + /* Mask/Unmask Interrupts */ + cs42l42_set_interrupt_masks(cs42l42); + + /* Register codec for machine driver */ + ret = devm_snd_soc_register_component(&i2c_client->dev, + &soc_component_dev_cs42l42, &cs42l42_dai, 1); + if (ret < 0) + goto err_disable; + return 0; + +err_disable: + regulator_bulk_disable(ARRAY_SIZE(cs42l42->supplies), + cs42l42->supplies); + return ret; +} + +static int cs42l42_i2c_remove(struct i2c_client *i2c_client) +{ + struct cs42l42_private *cs42l42 = i2c_get_clientdata(i2c_client); + + /* Hold down reset */ + gpiod_set_value_cansleep(cs42l42->reset_gpio, 0); + + return 0; +} + +#ifdef CONFIG_PM +static int cs42l42_runtime_suspend(struct device *dev) +{ + struct cs42l42_private *cs42l42 = dev_get_drvdata(dev); + + regcache_cache_only(cs42l42->regmap, true); + regcache_mark_dirty(cs42l42->regmap); + + /* Hold down reset */ + gpiod_set_value_cansleep(cs42l42->reset_gpio, 0); + + /* remove power */ + regulator_bulk_disable(ARRAY_SIZE(cs42l42->supplies), + cs42l42->supplies); + + return 0; +} + +static int cs42l42_runtime_resume(struct device *dev) +{ + struct cs42l42_private *cs42l42 = dev_get_drvdata(dev); + int ret; + + /* Enable power */ + ret = regulator_bulk_enable(ARRAY_SIZE(cs42l42->supplies), + cs42l42->supplies); + if (ret != 0) { + dev_err(dev, "Failed to enable supplies: %d\n", + ret); + return ret; + } + + gpiod_set_value_cansleep(cs42l42->reset_gpio, 1); + usleep_range(CS42L42_BOOT_TIME_US, CS42L42_BOOT_TIME_US * 2); + + regcache_cache_only(cs42l42->regmap, false); + regcache_sync(cs42l42->regmap); + + return 0; +} +#endif + +static const struct dev_pm_ops cs42l42_runtime_pm = { + SET_RUNTIME_PM_OPS(cs42l42_runtime_suspend, cs42l42_runtime_resume, + NULL) +}; + +static const struct of_device_id cs42l42_of_match[] = { + { .compatible = "cirrus,cs42l42", }, + {}, +}; +MODULE_DEVICE_TABLE(of, cs42l42_of_match); + + +static const struct i2c_device_id cs42l42_id[] = { + {"cs42l42", 0}, + {} +}; + +MODULE_DEVICE_TABLE(i2c, cs42l42_id); + +static struct i2c_driver cs42l42_i2c_driver = { + .driver = { + .name = "cs42l42", + .pm = &cs42l42_runtime_pm, + .of_match_table = cs42l42_of_match, + }, + .id_table = cs42l42_id, + .probe = cs42l42_i2c_probe, + .remove = cs42l42_i2c_remove, +}; + +module_i2c_driver(cs42l42_i2c_driver); + +MODULE_DESCRIPTION("ASoC CS42L42 driver"); +MODULE_AUTHOR("James Schulman, Cirrus Logic Inc, <james.schulman@cirrus.com>"); +MODULE_AUTHOR("Brian Austin, Cirrus Logic Inc, <brian.austin@cirrus.com>"); +MODULE_AUTHOR("Michael White, Cirrus Logic Inc, <michael.white@cirrus.com>"); +MODULE_LICENSE("GPL"); |