diff options
Diffstat (limited to 'sound/soc/codecs/max98373.c')
| -rw-r--r-- | sound/soc/codecs/max98373.c | 973 |
1 files changed, 973 insertions, 0 deletions
diff --git a/sound/soc/codecs/max98373.c b/sound/soc/codecs/max98373.c new file mode 100644 index 000000000..1093f766d --- /dev/null +++ b/sound/soc/codecs/max98373.c @@ -0,0 +1,973 @@ +// SPDX-License-Identifier: GPL-2.0 +// Copyright (c) 2017, Maxim Integrated + +#include <linux/acpi.h> +#include <linux/i2c.h> +#include <linux/module.h> +#include <linux/regmap.h> +#include <linux/slab.h> +#include <linux/cdev.h> +#include <sound/pcm.h> +#include <sound/pcm_params.h> +#include <sound/soc.h> +#include <linux/gpio.h> +#include <linux/of_gpio.h> +#include <sound/tlv.h> +#include "max98373.h" + +static struct reg_default max98373_reg[] = { + {MAX98373_R2000_SW_RESET, 0x00}, + {MAX98373_R2001_INT_RAW1, 0x00}, + {MAX98373_R2002_INT_RAW2, 0x00}, + {MAX98373_R2003_INT_RAW3, 0x00}, + {MAX98373_R2004_INT_STATE1, 0x00}, + {MAX98373_R2005_INT_STATE2, 0x00}, + {MAX98373_R2006_INT_STATE3, 0x00}, + {MAX98373_R2007_INT_FLAG1, 0x00}, + {MAX98373_R2008_INT_FLAG2, 0x00}, + {MAX98373_R2009_INT_FLAG3, 0x00}, + {MAX98373_R200A_INT_EN1, 0x00}, + {MAX98373_R200B_INT_EN2, 0x00}, + {MAX98373_R200C_INT_EN3, 0x00}, + {MAX98373_R200D_INT_FLAG_CLR1, 0x00}, + {MAX98373_R200E_INT_FLAG_CLR2, 0x00}, + {MAX98373_R200F_INT_FLAG_CLR3, 0x00}, + {MAX98373_R2010_IRQ_CTRL, 0x00}, + {MAX98373_R2014_THERM_WARN_THRESH, 0x10}, + {MAX98373_R2015_THERM_SHDN_THRESH, 0x27}, + {MAX98373_R2016_THERM_HYSTERESIS, 0x01}, + {MAX98373_R2017_THERM_FOLDBACK_SET, 0xC0}, + {MAX98373_R2018_THERM_FOLDBACK_EN, 0x00}, + {MAX98373_R201E_PIN_DRIVE_STRENGTH, 0x55}, + {MAX98373_R2020_PCM_TX_HIZ_EN_1, 0xFE}, + {MAX98373_R2021_PCM_TX_HIZ_EN_2, 0xFF}, + {MAX98373_R2022_PCM_TX_SRC_1, 0x00}, + {MAX98373_R2023_PCM_TX_SRC_2, 0x00}, + {MAX98373_R2024_PCM_DATA_FMT_CFG, 0xC0}, + {MAX98373_R2025_AUDIO_IF_MODE, 0x00}, + {MAX98373_R2026_PCM_CLOCK_RATIO, 0x04}, + {MAX98373_R2027_PCM_SR_SETUP_1, 0x08}, + {MAX98373_R2028_PCM_SR_SETUP_2, 0x88}, + {MAX98373_R2029_PCM_TO_SPK_MONO_MIX_1, 0x00}, + {MAX98373_R202A_PCM_TO_SPK_MONO_MIX_2, 0x00}, + {MAX98373_R202B_PCM_RX_EN, 0x00}, + {MAX98373_R202C_PCM_TX_EN, 0x00}, + {MAX98373_R202E_ICC_RX_CH_EN_1, 0x00}, + {MAX98373_R202F_ICC_RX_CH_EN_2, 0x00}, + {MAX98373_R2030_ICC_TX_HIZ_EN_1, 0xFF}, + {MAX98373_R2031_ICC_TX_HIZ_EN_2, 0xFF}, + {MAX98373_R2032_ICC_LINK_EN_CFG, 0x30}, + {MAX98373_R2034_ICC_TX_CNTL, 0x00}, + {MAX98373_R2035_ICC_TX_EN, 0x00}, + {MAX98373_R2036_SOUNDWIRE_CTRL, 0x05}, + {MAX98373_R203D_AMP_DIG_VOL_CTRL, 0x00}, + {MAX98373_R203E_AMP_PATH_GAIN, 0x08}, + {MAX98373_R203F_AMP_DSP_CFG, 0x02}, + {MAX98373_R2040_TONE_GEN_CFG, 0x00}, + {MAX98373_R2041_AMP_CFG, 0x03}, + {MAX98373_R2042_AMP_EDGE_RATE_CFG, 0x00}, + {MAX98373_R2043_AMP_EN, 0x00}, + {MAX98373_R2046_IV_SENSE_ADC_DSP_CFG, 0x04}, + {MAX98373_R2047_IV_SENSE_ADC_EN, 0x00}, + {MAX98373_R2051_MEAS_ADC_SAMPLING_RATE, 0x00}, + {MAX98373_R2052_MEAS_ADC_PVDD_FLT_CFG, 0x00}, + {MAX98373_R2053_MEAS_ADC_THERM_FLT_CFG, 0x00}, + {MAX98373_R2054_MEAS_ADC_PVDD_CH_READBACK, 0x00}, + {MAX98373_R2055_MEAS_ADC_THERM_CH_READBACK, 0x00}, + {MAX98373_R2056_MEAS_ADC_PVDD_CH_EN, 0x00}, + {MAX98373_R2090_BDE_LVL_HOLD, 0x00}, + {MAX98373_R2091_BDE_GAIN_ATK_REL_RATE, 0x00}, + {MAX98373_R2092_BDE_CLIPPER_MODE, 0x00}, + {MAX98373_R2097_BDE_L1_THRESH, 0x00}, + {MAX98373_R2098_BDE_L2_THRESH, 0x00}, + {MAX98373_R2099_BDE_L3_THRESH, 0x00}, + {MAX98373_R209A_BDE_L4_THRESH, 0x00}, + {MAX98373_R209B_BDE_THRESH_HYST, 0x00}, + {MAX98373_R20A8_BDE_L1_CFG_1, 0x00}, + {MAX98373_R20A9_BDE_L1_CFG_2, 0x00}, + {MAX98373_R20AA_BDE_L1_CFG_3, 0x00}, + {MAX98373_R20AB_BDE_L2_CFG_1, 0x00}, + {MAX98373_R20AC_BDE_L2_CFG_2, 0x00}, + {MAX98373_R20AD_BDE_L2_CFG_3, 0x00}, + {MAX98373_R20AE_BDE_L3_CFG_1, 0x00}, + {MAX98373_R20AF_BDE_L3_CFG_2, 0x00}, + {MAX98373_R20B0_BDE_L3_CFG_3, 0x00}, + {MAX98373_R20B1_BDE_L4_CFG_1, 0x00}, + {MAX98373_R20B2_BDE_L4_CFG_2, 0x00}, + {MAX98373_R20B3_BDE_L4_CFG_3, 0x00}, + {MAX98373_R20B4_BDE_INFINITE_HOLD_RELEASE, 0x00}, + {MAX98373_R20B5_BDE_EN, 0x00}, + {MAX98373_R20B6_BDE_CUR_STATE_READBACK, 0x00}, + {MAX98373_R20D1_DHT_CFG, 0x01}, + {MAX98373_R20D2_DHT_ATTACK_CFG, 0x02}, + {MAX98373_R20D3_DHT_RELEASE_CFG, 0x03}, + {MAX98373_R20D4_DHT_EN, 0x00}, + {MAX98373_R20E0_LIMITER_THRESH_CFG, 0x00}, + {MAX98373_R20E1_LIMITER_ATK_REL_RATES, 0x00}, + {MAX98373_R20E2_LIMITER_EN, 0x00}, + {MAX98373_R20FE_DEVICE_AUTO_RESTART_CFG, 0x00}, + {MAX98373_R20FF_GLOBAL_SHDN, 0x00}, + {MAX98373_R21FF_REV_ID, 0x42}, +}; + +static int max98373_dai_set_fmt(struct snd_soc_dai *codec_dai, unsigned int fmt) +{ + struct snd_soc_component *component = codec_dai->component; + struct max98373_priv *max98373 = snd_soc_component_get_drvdata(component); + unsigned int format = 0; + unsigned int invert = 0; + + dev_dbg(component->dev, "%s: fmt 0x%08X\n", __func__, fmt); + + switch (fmt & SND_SOC_DAIFMT_INV_MASK) { + case SND_SOC_DAIFMT_NB_NF: + break; + case SND_SOC_DAIFMT_IB_NF: + invert = MAX98373_PCM_MODE_CFG_PCM_BCLKEDGE; + break; + default: + dev_err(component->dev, "DAI invert mode unsupported\n"); + return -EINVAL; + } + + regmap_update_bits(max98373->regmap, + MAX98373_R2026_PCM_CLOCK_RATIO, + MAX98373_PCM_MODE_CFG_PCM_BCLKEDGE, + invert); + + /* interface format */ + switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { + case SND_SOC_DAIFMT_I2S: + format = MAX98373_PCM_FORMAT_I2S; + break; + case SND_SOC_DAIFMT_LEFT_J: + format = MAX98373_PCM_FORMAT_LJ; + break; + case SND_SOC_DAIFMT_DSP_A: + format = MAX98373_PCM_FORMAT_TDM_MODE1; + break; + case SND_SOC_DAIFMT_DSP_B: + format = MAX98373_PCM_FORMAT_TDM_MODE0; + break; + default: + return -EINVAL; + } + + regmap_update_bits(max98373->regmap, + MAX98373_R2024_PCM_DATA_FMT_CFG, + MAX98373_PCM_MODE_CFG_FORMAT_MASK, + format << MAX98373_PCM_MODE_CFG_FORMAT_SHIFT); + + return 0; +} + +/* BCLKs per LRCLK */ +static const int bclk_sel_table[] = { + 32, 48, 64, 96, 128, 192, 256, 384, 512, 320, +}; + +static int max98373_get_bclk_sel(int bclk) +{ + int i; + /* match BCLKs per LRCLK */ + for (i = 0; i < ARRAY_SIZE(bclk_sel_table); i++) { + if (bclk_sel_table[i] == bclk) + return i + 2; + } + return 0; +} + +static int max98373_set_clock(struct snd_soc_component *component, + struct snd_pcm_hw_params *params) +{ + struct max98373_priv *max98373 = snd_soc_component_get_drvdata(component); + /* BCLK/LRCLK ratio calculation */ + int blr_clk_ratio = params_channels(params) * max98373->ch_size; + int value; + + if (!max98373->tdm_mode) { + /* BCLK configuration */ + value = max98373_get_bclk_sel(blr_clk_ratio); + if (!value) { + dev_err(component->dev, "format unsupported %d\n", + params_format(params)); + return -EINVAL; + } + + regmap_update_bits(max98373->regmap, + MAX98373_R2026_PCM_CLOCK_RATIO, + MAX98373_PCM_CLK_SETUP_BSEL_MASK, + value); + } + return 0; +} + +static int max98373_dai_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 max98373_priv *max98373 = snd_soc_component_get_drvdata(component); + unsigned int sampling_rate = 0; + unsigned int chan_sz = 0; + + /* pcm mode configuration */ + switch (snd_pcm_format_width(params_format(params))) { + case 16: + chan_sz = MAX98373_PCM_MODE_CFG_CHANSZ_16; + break; + case 24: + chan_sz = MAX98373_PCM_MODE_CFG_CHANSZ_24; + break; + case 32: + chan_sz = MAX98373_PCM_MODE_CFG_CHANSZ_32; + break; + default: + dev_err(component->dev, "format unsupported %d\n", + params_format(params)); + goto err; + } + + max98373->ch_size = snd_pcm_format_width(params_format(params)); + + regmap_update_bits(max98373->regmap, + MAX98373_R2024_PCM_DATA_FMT_CFG, + MAX98373_PCM_MODE_CFG_CHANSZ_MASK, chan_sz); + + dev_dbg(component->dev, "format supported %d", + params_format(params)); + + /* sampling rate configuration */ + switch (params_rate(params)) { + case 8000: + sampling_rate = MAX98373_PCM_SR_SET1_SR_8000; + break; + case 11025: + sampling_rate = MAX98373_PCM_SR_SET1_SR_11025; + break; + case 12000: + sampling_rate = MAX98373_PCM_SR_SET1_SR_12000; + break; + case 16000: + sampling_rate = MAX98373_PCM_SR_SET1_SR_16000; + break; + case 22050: + sampling_rate = MAX98373_PCM_SR_SET1_SR_22050; + break; + case 24000: + sampling_rate = MAX98373_PCM_SR_SET1_SR_24000; + break; + case 32000: + sampling_rate = MAX98373_PCM_SR_SET1_SR_32000; + break; + case 44100: + sampling_rate = MAX98373_PCM_SR_SET1_SR_44100; + break; + case 48000: + sampling_rate = MAX98373_PCM_SR_SET1_SR_48000; + break; + default: + dev_err(component->dev, "rate %d not supported\n", + params_rate(params)); + goto err; + } + + /* set DAI_SR to correct LRCLK frequency */ + regmap_update_bits(max98373->regmap, + MAX98373_R2027_PCM_SR_SETUP_1, + MAX98373_PCM_SR_SET1_SR_MASK, + sampling_rate); + regmap_update_bits(max98373->regmap, + MAX98373_R2028_PCM_SR_SETUP_2, + MAX98373_PCM_SR_SET2_SR_MASK, + sampling_rate << MAX98373_PCM_SR_SET2_SR_SHIFT); + + /* set sampling rate of IV */ + if (max98373->interleave_mode && + sampling_rate > MAX98373_PCM_SR_SET1_SR_16000) + regmap_update_bits(max98373->regmap, + MAX98373_R2028_PCM_SR_SETUP_2, + MAX98373_PCM_SR_SET2_IVADC_SR_MASK, + sampling_rate - 3); + else + regmap_update_bits(max98373->regmap, + MAX98373_R2028_PCM_SR_SETUP_2, + MAX98373_PCM_SR_SET2_IVADC_SR_MASK, + sampling_rate); + + return max98373_set_clock(component, params); +err: + return -EINVAL; +} + +static int max98373_dai_tdm_slot(struct snd_soc_dai *dai, + unsigned int tx_mask, unsigned int rx_mask, + int slots, int slot_width) +{ + struct snd_soc_component *component = dai->component; + struct max98373_priv *max98373 = snd_soc_component_get_drvdata(component); + int bsel = 0; + unsigned int chan_sz = 0; + unsigned int mask; + int x, slot_found; + + if (!tx_mask && !rx_mask && !slots && !slot_width) + max98373->tdm_mode = false; + else + max98373->tdm_mode = true; + + /* BCLK configuration */ + bsel = max98373_get_bclk_sel(slots * slot_width); + if (bsel == 0) { + dev_err(component->dev, "BCLK %d not supported\n", + slots * slot_width); + return -EINVAL; + } + + regmap_update_bits(max98373->regmap, + MAX98373_R2026_PCM_CLOCK_RATIO, + MAX98373_PCM_CLK_SETUP_BSEL_MASK, + bsel); + + /* Channel size configuration */ + switch (slot_width) { + case 16: + chan_sz = MAX98373_PCM_MODE_CFG_CHANSZ_16; + break; + case 24: + chan_sz = MAX98373_PCM_MODE_CFG_CHANSZ_24; + break; + case 32: + chan_sz = MAX98373_PCM_MODE_CFG_CHANSZ_32; + break; + default: + dev_err(component->dev, "format unsupported %d\n", + slot_width); + return -EINVAL; + } + + regmap_update_bits(max98373->regmap, + MAX98373_R2024_PCM_DATA_FMT_CFG, + MAX98373_PCM_MODE_CFG_CHANSZ_MASK, chan_sz); + + /* Rx slot configuration */ + slot_found = 0; + mask = rx_mask; + for (x = 0 ; x < 16 ; x++, mask >>= 1) { + if (mask & 0x1) { + if (slot_found == 0) + regmap_update_bits(max98373->regmap, + MAX98373_R2029_PCM_TO_SPK_MONO_MIX_1, + MAX98373_PCM_TO_SPK_CH0_SRC_MASK, x); + else + regmap_write(max98373->regmap, + MAX98373_R202A_PCM_TO_SPK_MONO_MIX_2, + x); + slot_found++; + if (slot_found > 1) + break; + } + } + + /* Tx slot Hi-Z configuration */ + regmap_write(max98373->regmap, + MAX98373_R2020_PCM_TX_HIZ_EN_1, + ~tx_mask & 0xFF); + regmap_write(max98373->regmap, + MAX98373_R2021_PCM_TX_HIZ_EN_2, + (~tx_mask & 0xFF00) >> 8); + + return 0; +} + +#define MAX98373_RATES SNDRV_PCM_RATE_8000_96000 + +#define MAX98373_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | \ + SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE) + +static const struct snd_soc_dai_ops max98373_dai_ops = { + .set_fmt = max98373_dai_set_fmt, + .hw_params = max98373_dai_hw_params, + .set_tdm_slot = max98373_dai_tdm_slot, +}; + +static int max98373_dac_event(struct snd_soc_dapm_widget *w, + struct snd_kcontrol *kcontrol, int event) +{ + struct snd_soc_component *component = snd_soc_dapm_to_component(w->dapm); + struct max98373_priv *max98373 = snd_soc_component_get_drvdata(component); + + switch (event) { + case SND_SOC_DAPM_POST_PMU: + regmap_update_bits(max98373->regmap, + MAX98373_R20FF_GLOBAL_SHDN, + MAX98373_GLOBAL_EN_MASK, 1); + break; + case SND_SOC_DAPM_POST_PMD: + regmap_update_bits(max98373->regmap, + MAX98373_R20FF_GLOBAL_SHDN, + MAX98373_GLOBAL_EN_MASK, 0); + max98373->tdm_mode = 0; + break; + default: + return 0; + } + return 0; +} + +static const char * const max98373_switch_text[] = { + "Left", "Right", "LeftRight"}; + +static const struct soc_enum dai_sel_enum = + SOC_ENUM_SINGLE(MAX98373_R2029_PCM_TO_SPK_MONO_MIX_1, + MAX98373_PCM_TO_SPK_MONOMIX_CFG_SHIFT, + 3, max98373_switch_text); + +static const struct snd_kcontrol_new max98373_dai_controls = + SOC_DAPM_ENUM("DAI Sel", dai_sel_enum); + +static const struct snd_kcontrol_new max98373_vi_control = + SOC_DAPM_SINGLE("Switch", MAX98373_R202C_PCM_TX_EN, 0, 1, 0); + +static const struct snd_kcontrol_new max98373_spkfb_control = + SOC_DAPM_SINGLE("Switch", MAX98373_R2043_AMP_EN, 1, 1, 0); + +static const struct snd_soc_dapm_widget max98373_dapm_widgets[] = { +SND_SOC_DAPM_DAC_E("Amp Enable", "HiFi Playback", + MAX98373_R202B_PCM_RX_EN, 0, 0, max98373_dac_event, + SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_POST_PMD), +SND_SOC_DAPM_MUX("DAI Sel Mux", SND_SOC_NOPM, 0, 0, + &max98373_dai_controls), +SND_SOC_DAPM_OUTPUT("BE_OUT"), +SND_SOC_DAPM_AIF_OUT("Voltage Sense", "HiFi Capture", 0, + MAX98373_R2047_IV_SENSE_ADC_EN, 0, 0), +SND_SOC_DAPM_AIF_OUT("Current Sense", "HiFi Capture", 0, + MAX98373_R2047_IV_SENSE_ADC_EN, 1, 0), +SND_SOC_DAPM_AIF_OUT("Speaker FB Sense", "HiFi Capture", 0, + SND_SOC_NOPM, 0, 0), +SND_SOC_DAPM_SWITCH("VI Sense", SND_SOC_NOPM, 0, 0, + &max98373_vi_control), +SND_SOC_DAPM_SWITCH("SpkFB Sense", SND_SOC_NOPM, 0, 0, + &max98373_spkfb_control), +SND_SOC_DAPM_SIGGEN("VMON"), +SND_SOC_DAPM_SIGGEN("IMON"), +SND_SOC_DAPM_SIGGEN("FBMON"), +}; + +static DECLARE_TLV_DB_SCALE(max98373_digital_tlv, 0, -50, 0); +static const DECLARE_TLV_DB_RANGE(max98373_spk_tlv, + 0, 8, TLV_DB_SCALE_ITEM(0, 50, 0), + 9, 10, TLV_DB_SCALE_ITEM(500, 100, 0), +); +static const DECLARE_TLV_DB_RANGE(max98373_spkgain_max_tlv, + 0, 9, TLV_DB_SCALE_ITEM(800, 100, 0), +); +static const DECLARE_TLV_DB_RANGE(max98373_dht_step_size_tlv, + 0, 1, TLV_DB_SCALE_ITEM(25, 25, 0), + 2, 4, TLV_DB_SCALE_ITEM(100, 100, 0), +); +static const DECLARE_TLV_DB_RANGE(max98373_dht_spkgain_min_tlv, + 0, 9, TLV_DB_SCALE_ITEM(800, 100, 0), +); +static const DECLARE_TLV_DB_RANGE(max98373_dht_rotation_point_tlv, + 0, 1, TLV_DB_SCALE_ITEM(-50, -50, 0), + 2, 7, TLV_DB_SCALE_ITEM(-200, -100, 0), + 8, 9, TLV_DB_SCALE_ITEM(-1000, -200, 0), + 10, 11, TLV_DB_SCALE_ITEM(-1500, -300, 0), + 12, 13, TLV_DB_SCALE_ITEM(-2000, -200, 0), + 14, 15, TLV_DB_SCALE_ITEM(-2500, -500, 0), +); +static const DECLARE_TLV_DB_RANGE(max98373_limiter_thresh_tlv, + 0, 15, TLV_DB_SCALE_ITEM(0, -100, 0), +); + +static const DECLARE_TLV_DB_RANGE(max98373_bde_gain_tlv, + 0, 60, TLV_DB_SCALE_ITEM(0, -25, 0), +); + +static bool max98373_readable_register(struct device *dev, unsigned int reg) +{ + switch (reg) { + case MAX98373_R2000_SW_RESET: + case MAX98373_R2001_INT_RAW1 ... MAX98373_R200C_INT_EN3: + case MAX98373_R2010_IRQ_CTRL: + case MAX98373_R2014_THERM_WARN_THRESH + ... MAX98373_R2018_THERM_FOLDBACK_EN: + case MAX98373_R201E_PIN_DRIVE_STRENGTH + ... MAX98373_R2036_SOUNDWIRE_CTRL: + case MAX98373_R203D_AMP_DIG_VOL_CTRL ... MAX98373_R2043_AMP_EN: + case MAX98373_R2046_IV_SENSE_ADC_DSP_CFG + ... MAX98373_R2047_IV_SENSE_ADC_EN: + case MAX98373_R2051_MEAS_ADC_SAMPLING_RATE + ... MAX98373_R2056_MEAS_ADC_PVDD_CH_EN: + case MAX98373_R2090_BDE_LVL_HOLD ... MAX98373_R2092_BDE_CLIPPER_MODE: + case MAX98373_R2097_BDE_L1_THRESH + ... MAX98373_R209B_BDE_THRESH_HYST: + case MAX98373_R20A8_BDE_L1_CFG_1 ... MAX98373_R20B3_BDE_L4_CFG_3: + case MAX98373_R20B5_BDE_EN ... MAX98373_R20B6_BDE_CUR_STATE_READBACK: + case MAX98373_R20D1_DHT_CFG ... MAX98373_R20D4_DHT_EN: + case MAX98373_R20E0_LIMITER_THRESH_CFG ... MAX98373_R20E2_LIMITER_EN: + case MAX98373_R20FE_DEVICE_AUTO_RESTART_CFG + ... MAX98373_R20FF_GLOBAL_SHDN: + case MAX98373_R21FF_REV_ID: + return true; + default: + return false; + } +}; + +static bool max98373_volatile_reg(struct device *dev, unsigned int reg) +{ + switch (reg) { + case MAX98373_R2000_SW_RESET ... MAX98373_R2009_INT_FLAG3: + case MAX98373_R203E_AMP_PATH_GAIN: + case MAX98373_R2054_MEAS_ADC_PVDD_CH_READBACK: + case MAX98373_R2055_MEAS_ADC_THERM_CH_READBACK: + case MAX98373_R20B6_BDE_CUR_STATE_READBACK: + case MAX98373_R21FF_REV_ID: + return true; + default: + return false; + } +} + +static const char * const max98373_output_voltage_lvl_text[] = { + "5.43V", "6.09V", "6.83V", "7.67V", "8.60V", + "9.65V", "10.83V", "12.15V", "13.63V", "15.29V" +}; + +static SOC_ENUM_SINGLE_DECL(max98373_out_volt_enum, + MAX98373_R203E_AMP_PATH_GAIN, 0, + max98373_output_voltage_lvl_text); + +static const char * const max98373_dht_attack_rate_text[] = { + "17.5us", "35us", "70us", "140us", + "280us", "560us", "1120us", "2240us" +}; + +static SOC_ENUM_SINGLE_DECL(max98373_dht_attack_rate_enum, + MAX98373_R20D2_DHT_ATTACK_CFG, 0, + max98373_dht_attack_rate_text); + +static const char * const max98373_dht_release_rate_text[] = { + "45ms", "225ms", "450ms", "1150ms", + "2250ms", "3100ms", "4500ms", "6750ms" +}; + +static SOC_ENUM_SINGLE_DECL(max98373_dht_release_rate_enum, + MAX98373_R20D3_DHT_RELEASE_CFG, 0, + max98373_dht_release_rate_text); + +static const char * const max98373_limiter_attack_rate_text[] = { + "10us", "20us", "40us", "80us", + "160us", "320us", "640us", "1.28ms", + "2.56ms", "5.12ms", "10.24ms", "20.48ms", + "40.96ms", "81.92ms", "16.384ms", "32.768ms" +}; + +static SOC_ENUM_SINGLE_DECL(max98373_limiter_attack_rate_enum, + MAX98373_R20E1_LIMITER_ATK_REL_RATES, 4, + max98373_limiter_attack_rate_text); + +static const char * const max98373_limiter_release_rate_text[] = { + "40us", "80us", "160us", "320us", + "640us", "1.28ms", "2.56ms", "5.120ms", + "10.24ms", "20.48ms", "40.96ms", "81.92ms", + "163.84ms", "327.68ms", "655.36ms", "1310.72ms" +}; + +static SOC_ENUM_SINGLE_DECL(max98373_limiter_release_rate_enum, + MAX98373_R20E1_LIMITER_ATK_REL_RATES, 0, + max98373_limiter_release_rate_text); + +static const char * const max98373_ADC_samplerate_text[] = { + "333kHz", "192kHz", "64kHz", "48kHz" +}; + +static SOC_ENUM_SINGLE_DECL(max98373_adc_samplerate_enum, + MAX98373_R2051_MEAS_ADC_SAMPLING_RATE, 0, + max98373_ADC_samplerate_text); + +static const struct snd_kcontrol_new max98373_snd_controls[] = { +SOC_SINGLE("Digital Vol Sel Switch", MAX98373_R203F_AMP_DSP_CFG, + MAX98373_AMP_VOL_SEL_SHIFT, 1, 0), +SOC_SINGLE("Volume Location Switch", MAX98373_R203F_AMP_DSP_CFG, + MAX98373_AMP_VOL_SEL_SHIFT, 1, 0), +SOC_SINGLE("Ramp Up Switch", MAX98373_R203F_AMP_DSP_CFG, + MAX98373_AMP_DSP_CFG_RMP_UP_SHIFT, 1, 0), +SOC_SINGLE("Ramp Down Switch", MAX98373_R203F_AMP_DSP_CFG, + MAX98373_AMP_DSP_CFG_RMP_DN_SHIFT, 1, 0), +SOC_SINGLE("CLK Monitor Switch", MAX98373_R20FE_DEVICE_AUTO_RESTART_CFG, + MAX98373_CLOCK_MON_SHIFT, 1, 0), +SOC_SINGLE("Dither Switch", MAX98373_R203F_AMP_DSP_CFG, + MAX98373_AMP_DSP_CFG_DITH_SHIFT, 1, 0), +SOC_SINGLE("DC Blocker Switch", MAX98373_R203F_AMP_DSP_CFG, + MAX98373_AMP_DSP_CFG_DCBLK_SHIFT, 1, 0), +SOC_SINGLE_TLV("Digital Volume", MAX98373_R203D_AMP_DIG_VOL_CTRL, + 0, 0x7F, 0, max98373_digital_tlv), +SOC_SINGLE_TLV("Speaker Volume", MAX98373_R203E_AMP_PATH_GAIN, + MAX98373_SPK_DIGI_GAIN_SHIFT, 10, 0, max98373_spk_tlv), +SOC_SINGLE_TLV("FS Max Volume", MAX98373_R203E_AMP_PATH_GAIN, + MAX98373_FS_GAIN_MAX_SHIFT, 9, 0, max98373_spkgain_max_tlv), +SOC_ENUM("Output Voltage", max98373_out_volt_enum), +/* Dynamic Headroom Tracking */ +SOC_SINGLE("DHT Switch", MAX98373_R20D4_DHT_EN, + MAX98373_DHT_EN_SHIFT, 1, 0), +SOC_SINGLE_TLV("DHT Min Volume", MAX98373_R20D1_DHT_CFG, + MAX98373_DHT_SPK_GAIN_MIN_SHIFT, 9, 0, max98373_dht_spkgain_min_tlv), +SOC_SINGLE_TLV("DHT Rot Pnt Volume", MAX98373_R20D1_DHT_CFG, + MAX98373_DHT_ROT_PNT_SHIFT, 15, 0, max98373_dht_rotation_point_tlv), +SOC_SINGLE_TLV("DHT Attack Step Volume", MAX98373_R20D2_DHT_ATTACK_CFG, + MAX98373_DHT_ATTACK_STEP_SHIFT, 4, 0, max98373_dht_step_size_tlv), +SOC_SINGLE_TLV("DHT Release Step Volume", MAX98373_R20D3_DHT_RELEASE_CFG, + MAX98373_DHT_RELEASE_STEP_SHIFT, 4, 0, max98373_dht_step_size_tlv), +SOC_ENUM("DHT Attack Rate", max98373_dht_attack_rate_enum), +SOC_ENUM("DHT Release Rate", max98373_dht_release_rate_enum), +/* ADC configuration */ +SOC_SINGLE("ADC PVDD CH Switch", MAX98373_R2056_MEAS_ADC_PVDD_CH_EN, 0, 1, 0), +SOC_SINGLE("ADC PVDD FLT Switch", MAX98373_R2052_MEAS_ADC_PVDD_FLT_CFG, + MAX98373_FLT_EN_SHIFT, 1, 0), +SOC_SINGLE("ADC TEMP FLT Switch", MAX98373_R2053_MEAS_ADC_THERM_FLT_CFG, + MAX98373_FLT_EN_SHIFT, 1, 0), +SOC_SINGLE("ADC PVDD", MAX98373_R2054_MEAS_ADC_PVDD_CH_READBACK, 0, 0xFF, 0), +SOC_SINGLE("ADC TEMP", MAX98373_R2055_MEAS_ADC_THERM_CH_READBACK, 0, 0xFF, 0), +SOC_SINGLE("ADC PVDD FLT Coeff", MAX98373_R2052_MEAS_ADC_PVDD_FLT_CFG, + 0, 0x3, 0), +SOC_SINGLE("ADC TEMP FLT Coeff", MAX98373_R2053_MEAS_ADC_THERM_FLT_CFG, + 0, 0x3, 0), +SOC_ENUM("ADC SampleRate", max98373_adc_samplerate_enum), +/* Brownout Detection Engine */ +SOC_SINGLE("BDE Switch", MAX98373_R20B5_BDE_EN, MAX98373_BDE_EN_SHIFT, 1, 0), +SOC_SINGLE("BDE LVL4 Mute Switch", MAX98373_R20B2_BDE_L4_CFG_2, + MAX98373_LVL4_MUTE_EN_SHIFT, 1, 0), +SOC_SINGLE("BDE LVL4 Hold Switch", MAX98373_R20B2_BDE_L4_CFG_2, + MAX98373_LVL4_HOLD_EN_SHIFT, 1, 0), +SOC_SINGLE("BDE LVL1 Thresh", MAX98373_R2097_BDE_L1_THRESH, 0, 0xFF, 0), +SOC_SINGLE("BDE LVL2 Thresh", MAX98373_R2098_BDE_L2_THRESH, 0, 0xFF, 0), +SOC_SINGLE("BDE LVL3 Thresh", MAX98373_R2099_BDE_L3_THRESH, 0, 0xFF, 0), +SOC_SINGLE("BDE LVL4 Thresh", MAX98373_R209A_BDE_L4_THRESH, 0, 0xFF, 0), +SOC_SINGLE("BDE Active Level", MAX98373_R20B6_BDE_CUR_STATE_READBACK, 0, 8, 0), +SOC_SINGLE("BDE Clip Mode Switch", MAX98373_R2092_BDE_CLIPPER_MODE, 0, 1, 0), +SOC_SINGLE("BDE Thresh Hysteresis", MAX98373_R209B_BDE_THRESH_HYST, 0, 0xFF, 0), +SOC_SINGLE("BDE Hold Time", MAX98373_R2090_BDE_LVL_HOLD, 0, 0xFF, 0), +SOC_SINGLE("BDE Attack Rate", MAX98373_R2091_BDE_GAIN_ATK_REL_RATE, 4, 0xF, 0), +SOC_SINGLE("BDE Release Rate", MAX98373_R2091_BDE_GAIN_ATK_REL_RATE, 0, 0xF, 0), +SOC_SINGLE_TLV("BDE LVL1 Clip Thresh Volume", MAX98373_R20A9_BDE_L1_CFG_2, + 0, 0x3C, 0, max98373_bde_gain_tlv), +SOC_SINGLE_TLV("BDE LVL2 Clip Thresh Volume", MAX98373_R20AC_BDE_L2_CFG_2, + 0, 0x3C, 0, max98373_bde_gain_tlv), +SOC_SINGLE_TLV("BDE LVL3 Clip Thresh Volume", MAX98373_R20AF_BDE_L3_CFG_2, + 0, 0x3C, 0, max98373_bde_gain_tlv), +SOC_SINGLE_TLV("BDE LVL4 Clip Thresh Volume", MAX98373_R20B2_BDE_L4_CFG_2, + 0, 0x3C, 0, max98373_bde_gain_tlv), +SOC_SINGLE_TLV("BDE LVL1 Clip Reduction Volume", MAX98373_R20AA_BDE_L1_CFG_3, + 0, 0x3C, 0, max98373_bde_gain_tlv), +SOC_SINGLE_TLV("BDE LVL2 Clip Reduction Volume", MAX98373_R20AD_BDE_L2_CFG_3, + 0, 0x3C, 0, max98373_bde_gain_tlv), +SOC_SINGLE_TLV("BDE LVL3 Clip Reduction Volume", MAX98373_R20B0_BDE_L3_CFG_3, + 0, 0x3C, 0, max98373_bde_gain_tlv), +SOC_SINGLE_TLV("BDE LVL4 Clip Reduction Volume", MAX98373_R20B3_BDE_L4_CFG_3, + 0, 0x3C, 0, max98373_bde_gain_tlv), +SOC_SINGLE_TLV("BDE LVL1 Limiter Thresh Volume", MAX98373_R20A8_BDE_L1_CFG_1, + 0, 0xF, 0, max98373_limiter_thresh_tlv), +SOC_SINGLE_TLV("BDE LVL2 Limiter Thresh Volume", MAX98373_R20AB_BDE_L2_CFG_1, + 0, 0xF, 0, max98373_limiter_thresh_tlv), +SOC_SINGLE_TLV("BDE LVL3 Limiter Thresh Volume", MAX98373_R20AE_BDE_L3_CFG_1, + 0, 0xF, 0, max98373_limiter_thresh_tlv), +SOC_SINGLE_TLV("BDE LVL4 Limiter Thresh Volume", MAX98373_R20B1_BDE_L4_CFG_1, + 0, 0xF, 0, max98373_limiter_thresh_tlv), +/* Limiter */ +SOC_SINGLE("Limiter Switch", MAX98373_R20E2_LIMITER_EN, + MAX98373_LIMITER_EN_SHIFT, 1, 0), +SOC_SINGLE("Limiter Src Switch", MAX98373_R20E0_LIMITER_THRESH_CFG, + MAX98373_LIMITER_THRESH_SRC_SHIFT, 1, 0), +SOC_SINGLE_TLV("Limiter Thresh Volume", MAX98373_R20E0_LIMITER_THRESH_CFG, + MAX98373_LIMITER_THRESH_SHIFT, 15, 0, max98373_limiter_thresh_tlv), +SOC_ENUM("Limiter Attack Rate", max98373_limiter_attack_rate_enum), +SOC_ENUM("Limiter Release Rate", max98373_limiter_release_rate_enum), +}; + +static const struct snd_soc_dapm_route max98373_audio_map[] = { + /* Plabyack */ + {"DAI Sel Mux", "Left", "Amp Enable"}, + {"DAI Sel Mux", "Right", "Amp Enable"}, + {"DAI Sel Mux", "LeftRight", "Amp Enable"}, + {"BE_OUT", NULL, "DAI Sel Mux"}, + /* Capture */ + { "VI Sense", "Switch", "VMON" }, + { "VI Sense", "Switch", "IMON" }, + { "SpkFB Sense", "Switch", "FBMON" }, + { "Voltage Sense", NULL, "VI Sense" }, + { "Current Sense", NULL, "VI Sense" }, + { "Speaker FB Sense", NULL, "SpkFB Sense" }, +}; + +static struct snd_soc_dai_driver max98373_dai[] = { + { + .name = "max98373-aif1", + .playback = { + .stream_name = "HiFi Playback", + .channels_min = 1, + .channels_max = 2, + .rates = MAX98373_RATES, + .formats = MAX98373_FORMATS, + }, + .capture = { + .stream_name = "HiFi Capture", + .channels_min = 1, + .channels_max = 2, + .rates = MAX98373_RATES, + .formats = MAX98373_FORMATS, + }, + .ops = &max98373_dai_ops, + } +}; + +static int max98373_probe(struct snd_soc_component *component) +{ + struct max98373_priv *max98373 = snd_soc_component_get_drvdata(component); + + /* Software Reset */ + regmap_write(max98373->regmap, + MAX98373_R2000_SW_RESET, MAX98373_SOFT_RESET); + usleep_range(10000, 11000); + + /* IV default slot configuration */ + regmap_write(max98373->regmap, + MAX98373_R2020_PCM_TX_HIZ_EN_1, + 0xFF); + regmap_write(max98373->regmap, + MAX98373_R2021_PCM_TX_HIZ_EN_2, + 0xFF); + /* L/R mix configuration */ + regmap_write(max98373->regmap, + MAX98373_R2029_PCM_TO_SPK_MONO_MIX_1, + 0x80); + regmap_write(max98373->regmap, + MAX98373_R202A_PCM_TO_SPK_MONO_MIX_2, + 0x1); + /* Set inital volume (0dB) */ + regmap_write(max98373->regmap, + MAX98373_R203D_AMP_DIG_VOL_CTRL, + 0x00); + regmap_write(max98373->regmap, + MAX98373_R203E_AMP_PATH_GAIN, + 0x00); + /* Enable DC blocker */ + regmap_write(max98373->regmap, + MAX98373_R203F_AMP_DSP_CFG, + 0x3); + /* Enable IMON VMON DC blocker */ + regmap_write(max98373->regmap, + MAX98373_R2046_IV_SENSE_ADC_DSP_CFG, + 0x7); + /* voltage, current slot configuration */ + regmap_write(max98373->regmap, + MAX98373_R2022_PCM_TX_SRC_1, + (max98373->i_slot << MAX98373_PCM_TX_CH_SRC_A_I_SHIFT | + max98373->v_slot) & 0xFF); + if (max98373->v_slot < 8) + regmap_update_bits(max98373->regmap, + MAX98373_R2020_PCM_TX_HIZ_EN_1, + 1 << max98373->v_slot, 0); + else + regmap_update_bits(max98373->regmap, + MAX98373_R2021_PCM_TX_HIZ_EN_2, + 1 << (max98373->v_slot - 8), 0); + + if (max98373->i_slot < 8) + regmap_update_bits(max98373->regmap, + MAX98373_R2020_PCM_TX_HIZ_EN_1, + 1 << max98373->i_slot, 0); + else + regmap_update_bits(max98373->regmap, + MAX98373_R2021_PCM_TX_HIZ_EN_2, + 1 << (max98373->i_slot - 8), 0); + + /* speaker feedback slot configuration */ + regmap_write(max98373->regmap, + MAX98373_R2023_PCM_TX_SRC_2, + max98373->spkfb_slot & 0xFF); + + /* Set interleave mode */ + if (max98373->interleave_mode) + regmap_update_bits(max98373->regmap, + MAX98373_R2024_PCM_DATA_FMT_CFG, + MAX98373_PCM_TX_CH_INTERLEAVE_MASK, + MAX98373_PCM_TX_CH_INTERLEAVE_MASK); + + /* Speaker enable */ + regmap_update_bits(max98373->regmap, + MAX98373_R2043_AMP_EN, + MAX98373_SPK_EN_MASK, 1); + + return 0; +} + +#ifdef CONFIG_PM_SLEEP +static int max98373_suspend(struct device *dev) +{ + struct max98373_priv *max98373 = dev_get_drvdata(dev); + + regcache_cache_only(max98373->regmap, true); + regcache_mark_dirty(max98373->regmap); + return 0; +} +static int max98373_resume(struct device *dev) +{ + struct max98373_priv *max98373 = dev_get_drvdata(dev); + + regmap_write(max98373->regmap, + MAX98373_R2000_SW_RESET, MAX98373_SOFT_RESET); + usleep_range(10000, 11000); + regcache_cache_only(max98373->regmap, false); + regcache_sync(max98373->regmap); + return 0; +} +#endif + +static const struct dev_pm_ops max98373_pm = { + SET_SYSTEM_SLEEP_PM_OPS(max98373_suspend, max98373_resume) +}; + +static const struct snd_soc_component_driver soc_codec_dev_max98373 = { + .probe = max98373_probe, + .controls = max98373_snd_controls, + .num_controls = ARRAY_SIZE(max98373_snd_controls), + .dapm_widgets = max98373_dapm_widgets, + .num_dapm_widgets = ARRAY_SIZE(max98373_dapm_widgets), + .dapm_routes = max98373_audio_map, + .num_dapm_routes = ARRAY_SIZE(max98373_audio_map), + .idle_bias_on = 1, + .use_pmdown_time = 1, + .endianness = 1, + .non_legacy_dai_naming = 1, +}; + +static const struct regmap_config max98373_regmap = { + .reg_bits = 16, + .val_bits = 8, + .max_register = MAX98373_R21FF_REV_ID, + .reg_defaults = max98373_reg, + .num_reg_defaults = ARRAY_SIZE(max98373_reg), + .readable_reg = max98373_readable_register, + .volatile_reg = max98373_volatile_reg, + .cache_type = REGCACHE_RBTREE, +}; + +static void max98373_slot_config(struct i2c_client *i2c, + struct max98373_priv *max98373) +{ + int value; + struct device *dev = &i2c->dev; + + if (!device_property_read_u32(dev, "maxim,vmon-slot-no", &value)) + max98373->v_slot = value & 0xF; + else + max98373->v_slot = 0; + + if (!device_property_read_u32(dev, "maxim,imon-slot-no", &value)) + max98373->i_slot = value & 0xF; + else + max98373->i_slot = 1; + + if (!device_property_read_u32(dev, "maxim,spkfb-slot-no", &value)) + max98373->spkfb_slot = value & 0xF; + else + max98373->spkfb_slot = 2; +} + +static int max98373_i2c_probe(struct i2c_client *i2c, + const struct i2c_device_id *id) +{ + + int ret = 0; + int reg = 0; + struct max98373_priv *max98373 = NULL; + + max98373 = devm_kzalloc(&i2c->dev, sizeof(*max98373), GFP_KERNEL); + + if (!max98373) { + ret = -ENOMEM; + return ret; + } + i2c_set_clientdata(i2c, max98373); + + /* update interleave mode info */ + if (device_property_read_bool(&i2c->dev, "maxim,interleave_mode")) + max98373->interleave_mode = 1; + else + max98373->interleave_mode = 0; + + + /* regmap initialization */ + max98373->regmap + = devm_regmap_init_i2c(i2c, &max98373_regmap); + if (IS_ERR(max98373->regmap)) { + ret = PTR_ERR(max98373->regmap); + dev_err(&i2c->dev, + "Failed to allocate regmap: %d\n", ret); + return ret; + } + + /* Check Revision ID */ + ret = regmap_read(max98373->regmap, + MAX98373_R21FF_REV_ID, ®); + if (ret < 0) { + dev_err(&i2c->dev, + "Failed to read: 0x%02X\n", MAX98373_R21FF_REV_ID); + return ret; + } + dev_info(&i2c->dev, "MAX98373 revisionID: 0x%02X\n", reg); + + /* voltage/current slot configuration */ + max98373_slot_config(i2c, max98373); + + /* codec registeration */ + ret = devm_snd_soc_register_component(&i2c->dev, &soc_codec_dev_max98373, + max98373_dai, ARRAY_SIZE(max98373_dai)); + if (ret < 0) + dev_err(&i2c->dev, "Failed to register codec: %d\n", ret); + + return ret; +} + +static const struct i2c_device_id max98373_i2c_id[] = { + { "max98373", 0}, + { }, +}; + +MODULE_DEVICE_TABLE(i2c, max98373_i2c_id); + +#if defined(CONFIG_OF) +static const struct of_device_id max98373_of_match[] = { + { .compatible = "maxim,max98373", }, + { } +}; +MODULE_DEVICE_TABLE(of, max98373_of_match); +#endif + +#ifdef CONFIG_ACPI +static const struct acpi_device_id max98373_acpi_match[] = { + { "MX98373", 0 }, + {}, +}; +MODULE_DEVICE_TABLE(acpi, max98373_acpi_match); +#endif + +static struct i2c_driver max98373_i2c_driver = { + .driver = { + .name = "max98373", + .of_match_table = of_match_ptr(max98373_of_match), + .acpi_match_table = ACPI_PTR(max98373_acpi_match), + .pm = &max98373_pm, + }, + .probe = max98373_i2c_probe, + .id_table = max98373_i2c_id, +}; + +module_i2c_driver(max98373_i2c_driver) + +MODULE_DESCRIPTION("ALSA SoC MAX98373 driver"); +MODULE_AUTHOR("Ryan Lee <ryans.lee@maximintegrated.com>"); +MODULE_LICENSE("GPL"); |