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0001 // SPDX-License-Identifier: GPL-2.0-only
0002 /*
0003  * es8316.c -- es8316 ALSA SoC audio driver
0004  * Copyright Everest Semiconductor Co.,Ltd
0005  *
0006  * Authors: David Yang <yangxiaohua@everest-semi.com>,
0007  *          Daniel Drake <drake@endlessm.com>
0008  */
0009 
0010 #include <linux/module.h>
0011 #include <linux/acpi.h>
0012 #include <linux/clk.h>
0013 #include <linux/delay.h>
0014 #include <linux/i2c.h>
0015 #include <linux/mod_devicetable.h>
0016 #include <linux/mutex.h>
0017 #include <linux/regmap.h>
0018 #include <sound/pcm.h>
0019 #include <sound/pcm_params.h>
0020 #include <sound/soc.h>
0021 #include <sound/soc-dapm.h>
0022 #include <sound/tlv.h>
0023 #include <sound/jack.h>
0024 #include "es8316.h"
0025 
0026 /* In slave mode at single speed, the codec is documented as accepting 5
0027  * MCLK/LRCK ratios, but we also add ratio 400, which is commonly used on
0028  * Intel Cherry Trail platforms (19.2MHz MCLK, 48kHz LRCK).
0029  */
0030 #define NR_SUPPORTED_MCLK_LRCK_RATIOS 6
0031 static const unsigned int supported_mclk_lrck_ratios[] = {
0032     256, 384, 400, 512, 768, 1024
0033 };
0034 
0035 struct es8316_priv {
0036     struct mutex lock;
0037     struct clk *mclk;
0038     struct regmap *regmap;
0039     struct snd_soc_component *component;
0040     struct snd_soc_jack *jack;
0041     int irq;
0042     unsigned int sysclk;
0043     unsigned int allowed_rates[NR_SUPPORTED_MCLK_LRCK_RATIOS];
0044     struct snd_pcm_hw_constraint_list sysclk_constraints;
0045     bool jd_inverted;
0046 };
0047 
0048 /*
0049  * ES8316 controls
0050  */
0051 static const SNDRV_CTL_TLVD_DECLARE_DB_SCALE(dac_vol_tlv, -9600, 50, 1);
0052 static const SNDRV_CTL_TLVD_DECLARE_DB_SCALE(adc_vol_tlv, -9600, 50, 1);
0053 static const SNDRV_CTL_TLVD_DECLARE_DB_SCALE(alc_max_gain_tlv, -650, 150, 0);
0054 static const SNDRV_CTL_TLVD_DECLARE_DB_SCALE(alc_min_gain_tlv, -1200, 150, 0);
0055 static const SNDRV_CTL_TLVD_DECLARE_DB_SCALE(alc_target_tlv, -1650, 150, 0);
0056 static const SNDRV_CTL_TLVD_DECLARE_DB_RANGE(hpmixer_gain_tlv,
0057     0, 4, TLV_DB_SCALE_ITEM(-1200, 150, 0),
0058     8, 11, TLV_DB_SCALE_ITEM(-450, 150, 0),
0059 );
0060 
0061 static const SNDRV_CTL_TLVD_DECLARE_DB_RANGE(adc_pga_gain_tlv,
0062     0, 0, TLV_DB_SCALE_ITEM(-350, 0, 0),
0063     1, 1, TLV_DB_SCALE_ITEM(0, 0, 0),
0064     2, 2, TLV_DB_SCALE_ITEM(250, 0, 0),
0065     3, 3, TLV_DB_SCALE_ITEM(450, 0, 0),
0066     4, 7, TLV_DB_SCALE_ITEM(700, 300, 0),
0067     8, 10, TLV_DB_SCALE_ITEM(1800, 300, 0),
0068 );
0069 
0070 static const SNDRV_CTL_TLVD_DECLARE_DB_RANGE(hpout_vol_tlv,
0071     0, 0, TLV_DB_SCALE_ITEM(-4800, 0, 0),
0072     1, 3, TLV_DB_SCALE_ITEM(-2400, 1200, 0),
0073 );
0074 
0075 static const char * const ng_type_txt[] =
0076     { "Constant PGA Gain", "Mute ADC Output" };
0077 static const struct soc_enum ng_type =
0078     SOC_ENUM_SINGLE(ES8316_ADC_ALC_NG, 6, 2, ng_type_txt);
0079 
0080 static const char * const adcpol_txt[] = { "Normal", "Invert" };
0081 static const struct soc_enum adcpol =
0082     SOC_ENUM_SINGLE(ES8316_ADC_MUTE, 1, 2, adcpol_txt);
0083 static const char *const dacpol_txt[] =
0084     { "Normal", "R Invert", "L Invert", "L + R Invert" };
0085 static const struct soc_enum dacpol =
0086     SOC_ENUM_SINGLE(ES8316_DAC_SET1, 0, 4, dacpol_txt);
0087 
0088 static const struct snd_kcontrol_new es8316_snd_controls[] = {
0089     SOC_DOUBLE_TLV("Headphone Playback Volume", ES8316_CPHP_ICAL_VOL,
0090                4, 0, 3, 1, hpout_vol_tlv),
0091     SOC_DOUBLE_TLV("Headphone Mixer Volume", ES8316_HPMIX_VOL,
0092                4, 0, 11, 0, hpmixer_gain_tlv),
0093 
0094     SOC_ENUM("Playback Polarity", dacpol),
0095     SOC_DOUBLE_R_TLV("DAC Playback Volume", ES8316_DAC_VOLL,
0096              ES8316_DAC_VOLR, 0, 0xc0, 1, dac_vol_tlv),
0097     SOC_SINGLE("DAC Soft Ramp Switch", ES8316_DAC_SET1, 4, 1, 1),
0098     SOC_SINGLE("DAC Soft Ramp Rate", ES8316_DAC_SET1, 2, 4, 0),
0099     SOC_SINGLE("DAC Notch Filter Switch", ES8316_DAC_SET2, 6, 1, 0),
0100     SOC_SINGLE("DAC Double Fs Switch", ES8316_DAC_SET2, 7, 1, 0),
0101     SOC_SINGLE("DAC Stereo Enhancement", ES8316_DAC_SET3, 0, 7, 0),
0102     SOC_SINGLE("DAC Mono Mix Switch", ES8316_DAC_SET3, 3, 1, 0),
0103 
0104     SOC_ENUM("Capture Polarity", adcpol),
0105     SOC_SINGLE("Mic Boost Switch", ES8316_ADC_D2SEPGA, 0, 1, 0),
0106     SOC_SINGLE_TLV("ADC Capture Volume", ES8316_ADC_VOLUME,
0107                0, 0xc0, 1, adc_vol_tlv),
0108     SOC_SINGLE_TLV("ADC PGA Gain Volume", ES8316_ADC_PGAGAIN,
0109                4, 10, 0, adc_pga_gain_tlv),
0110     SOC_SINGLE("ADC Soft Ramp Switch", ES8316_ADC_MUTE, 4, 1, 0),
0111     SOC_SINGLE("ADC Double Fs Switch", ES8316_ADC_DMIC, 4, 1, 0),
0112 
0113     SOC_SINGLE("ALC Capture Switch", ES8316_ADC_ALC1, 6, 1, 0),
0114     SOC_SINGLE_TLV("ALC Capture Max Volume", ES8316_ADC_ALC1, 0, 28, 0,
0115                alc_max_gain_tlv),
0116     SOC_SINGLE_TLV("ALC Capture Min Volume", ES8316_ADC_ALC2, 0, 28, 0,
0117                alc_min_gain_tlv),
0118     SOC_SINGLE_TLV("ALC Capture Target Volume", ES8316_ADC_ALC3, 4, 10, 0,
0119                alc_target_tlv),
0120     SOC_SINGLE("ALC Capture Hold Time", ES8316_ADC_ALC3, 0, 10, 0),
0121     SOC_SINGLE("ALC Capture Decay Time", ES8316_ADC_ALC4, 4, 10, 0),
0122     SOC_SINGLE("ALC Capture Attack Time", ES8316_ADC_ALC4, 0, 10, 0),
0123     SOC_SINGLE("ALC Capture Noise Gate Switch", ES8316_ADC_ALC_NG,
0124            5, 1, 0),
0125     SOC_SINGLE("ALC Capture Noise Gate Threshold", ES8316_ADC_ALC_NG,
0126            0, 31, 0),
0127     SOC_ENUM("ALC Capture Noise Gate Type", ng_type),
0128 };
0129 
0130 /* Analog Input Mux */
0131 static const char * const es8316_analog_in_txt[] = {
0132         "lin1-rin1",
0133         "lin2-rin2",
0134         "lin1-rin1 with 20db Boost",
0135         "lin2-rin2 with 20db Boost"
0136 };
0137 static const unsigned int es8316_analog_in_values[] = { 0, 1, 2, 3 };
0138 static const struct soc_enum es8316_analog_input_enum =
0139     SOC_VALUE_ENUM_SINGLE(ES8316_ADC_PDN_LINSEL, 4, 3,
0140                   ARRAY_SIZE(es8316_analog_in_txt),
0141                   es8316_analog_in_txt,
0142                   es8316_analog_in_values);
0143 static const struct snd_kcontrol_new es8316_analog_in_mux_controls =
0144     SOC_DAPM_ENUM("Route", es8316_analog_input_enum);
0145 
0146 static const char * const es8316_dmic_txt[] = {
0147         "dmic disable",
0148         "dmic data at high level",
0149         "dmic data at low level",
0150 };
0151 static const unsigned int es8316_dmic_values[] = { 0, 1, 2 };
0152 static const struct soc_enum es8316_dmic_src_enum =
0153     SOC_VALUE_ENUM_SINGLE(ES8316_ADC_DMIC, 0, 3,
0154                   ARRAY_SIZE(es8316_dmic_txt),
0155                   es8316_dmic_txt,
0156                   es8316_dmic_values);
0157 static const struct snd_kcontrol_new es8316_dmic_src_controls =
0158     SOC_DAPM_ENUM("Route", es8316_dmic_src_enum);
0159 
0160 /* hp mixer mux */
0161 static const char * const es8316_hpmux_texts[] = {
0162     "lin1-rin1",
0163     "lin2-rin2",
0164     "lin-rin with Boost",
0165     "lin-rin with Boost and PGA"
0166 };
0167 
0168 static SOC_ENUM_SINGLE_DECL(es8316_left_hpmux_enum, ES8316_HPMIX_SEL,
0169     4, es8316_hpmux_texts);
0170 
0171 static const struct snd_kcontrol_new es8316_left_hpmux_controls =
0172     SOC_DAPM_ENUM("Route", es8316_left_hpmux_enum);
0173 
0174 static SOC_ENUM_SINGLE_DECL(es8316_right_hpmux_enum, ES8316_HPMIX_SEL,
0175     0, es8316_hpmux_texts);
0176 
0177 static const struct snd_kcontrol_new es8316_right_hpmux_controls =
0178     SOC_DAPM_ENUM("Route", es8316_right_hpmux_enum);
0179 
0180 /* headphone Output Mixer */
0181 static const struct snd_kcontrol_new es8316_out_left_mix[] = {
0182     SOC_DAPM_SINGLE("LLIN Switch", ES8316_HPMIX_SWITCH, 6, 1, 0),
0183     SOC_DAPM_SINGLE("Left DAC Switch", ES8316_HPMIX_SWITCH, 7, 1, 0),
0184 };
0185 static const struct snd_kcontrol_new es8316_out_right_mix[] = {
0186     SOC_DAPM_SINGLE("RLIN Switch", ES8316_HPMIX_SWITCH, 2, 1, 0),
0187     SOC_DAPM_SINGLE("Right DAC Switch", ES8316_HPMIX_SWITCH, 3, 1, 0),
0188 };
0189 
0190 /* DAC data source mux */
0191 static const char * const es8316_dacsrc_texts[] = {
0192     "LDATA TO LDAC, RDATA TO RDAC",
0193     "LDATA TO LDAC, LDATA TO RDAC",
0194     "RDATA TO LDAC, RDATA TO RDAC",
0195     "RDATA TO LDAC, LDATA TO RDAC",
0196 };
0197 
0198 static SOC_ENUM_SINGLE_DECL(es8316_dacsrc_mux_enum, ES8316_DAC_SET1,
0199     6, es8316_dacsrc_texts);
0200 
0201 static const struct snd_kcontrol_new es8316_dacsrc_mux_controls =
0202     SOC_DAPM_ENUM("Route", es8316_dacsrc_mux_enum);
0203 
0204 static const struct snd_soc_dapm_widget es8316_dapm_widgets[] = {
0205     SND_SOC_DAPM_SUPPLY("Bias", ES8316_SYS_PDN, 3, 1, NULL, 0),
0206     SND_SOC_DAPM_SUPPLY("Analog power", ES8316_SYS_PDN, 4, 1, NULL, 0),
0207     SND_SOC_DAPM_SUPPLY("Mic Bias", ES8316_SYS_PDN, 5, 1, NULL, 0),
0208 
0209     SND_SOC_DAPM_INPUT("DMIC"),
0210     SND_SOC_DAPM_INPUT("MIC1"),
0211     SND_SOC_DAPM_INPUT("MIC2"),
0212 
0213     /* Input Mux */
0214     SND_SOC_DAPM_MUX("Differential Mux", SND_SOC_NOPM, 0, 0,
0215              &es8316_analog_in_mux_controls),
0216 
0217     SND_SOC_DAPM_SUPPLY("ADC Vref", ES8316_SYS_PDN, 1, 1, NULL, 0),
0218     SND_SOC_DAPM_SUPPLY("ADC bias", ES8316_SYS_PDN, 2, 1, NULL, 0),
0219     SND_SOC_DAPM_SUPPLY("ADC Clock", ES8316_CLKMGR_CLKSW, 3, 0, NULL, 0),
0220     SND_SOC_DAPM_PGA("Line input PGA", ES8316_ADC_PDN_LINSEL,
0221              7, 1, NULL, 0),
0222     SND_SOC_DAPM_ADC("Mono ADC", NULL, ES8316_ADC_PDN_LINSEL, 6, 1),
0223     SND_SOC_DAPM_MUX("Digital Mic Mux", SND_SOC_NOPM, 0, 0,
0224              &es8316_dmic_src_controls),
0225 
0226     /* Digital Interface */
0227     SND_SOC_DAPM_AIF_OUT("I2S OUT", "I2S1 Capture",  1,
0228                  ES8316_SERDATA_ADC, 6, 1),
0229     SND_SOC_DAPM_AIF_IN("I2S IN", "I2S1 Playback", 0,
0230                 SND_SOC_NOPM, 0, 0),
0231 
0232     SND_SOC_DAPM_MUX("DAC Source Mux", SND_SOC_NOPM, 0, 0,
0233              &es8316_dacsrc_mux_controls),
0234 
0235     SND_SOC_DAPM_SUPPLY("DAC Vref", ES8316_SYS_PDN, 0, 1, NULL, 0),
0236     SND_SOC_DAPM_SUPPLY("DAC Clock", ES8316_CLKMGR_CLKSW, 2, 0, NULL, 0),
0237     SND_SOC_DAPM_DAC("Right DAC", NULL, ES8316_DAC_PDN, 0, 1),
0238     SND_SOC_DAPM_DAC("Left DAC", NULL, ES8316_DAC_PDN, 4, 1),
0239 
0240     /* Headphone Output Side */
0241     SND_SOC_DAPM_MUX("Left Headphone Mux", SND_SOC_NOPM, 0, 0,
0242              &es8316_left_hpmux_controls),
0243     SND_SOC_DAPM_MUX("Right Headphone Mux", SND_SOC_NOPM, 0, 0,
0244              &es8316_right_hpmux_controls),
0245     SND_SOC_DAPM_MIXER("Left Headphone Mixer", ES8316_HPMIX_PDN,
0246                5, 1, &es8316_out_left_mix[0],
0247                ARRAY_SIZE(es8316_out_left_mix)),
0248     SND_SOC_DAPM_MIXER("Right Headphone Mixer", ES8316_HPMIX_PDN,
0249                1, 1, &es8316_out_right_mix[0],
0250                ARRAY_SIZE(es8316_out_right_mix)),
0251     SND_SOC_DAPM_PGA("Left Headphone Mixer Out", ES8316_HPMIX_PDN,
0252              4, 1, NULL, 0),
0253     SND_SOC_DAPM_PGA("Right Headphone Mixer Out", ES8316_HPMIX_PDN,
0254              0, 1, NULL, 0),
0255 
0256     SND_SOC_DAPM_OUT_DRV("Left Headphone Charge Pump", ES8316_CPHP_OUTEN,
0257                  6, 0, NULL, 0),
0258     SND_SOC_DAPM_OUT_DRV("Right Headphone Charge Pump", ES8316_CPHP_OUTEN,
0259                  2, 0, NULL, 0),
0260     SND_SOC_DAPM_SUPPLY("Headphone Charge Pump", ES8316_CPHP_PDN2,
0261                 5, 1, NULL, 0),
0262     SND_SOC_DAPM_SUPPLY("Headphone Charge Pump Clock", ES8316_CLKMGR_CLKSW,
0263                 4, 0, NULL, 0),
0264 
0265     SND_SOC_DAPM_OUT_DRV("Left Headphone Driver", ES8316_CPHP_OUTEN,
0266                  5, 0, NULL, 0),
0267     SND_SOC_DAPM_OUT_DRV("Right Headphone Driver", ES8316_CPHP_OUTEN,
0268                  1, 0, NULL, 0),
0269     SND_SOC_DAPM_SUPPLY("Headphone Out", ES8316_CPHP_PDN1, 2, 1, NULL, 0),
0270 
0271     /* pdn_Lical and pdn_Rical bits are documented as Reserved, but must
0272      * be explicitly unset in order to enable HP output
0273      */
0274     SND_SOC_DAPM_SUPPLY("Left Headphone ical", ES8316_CPHP_ICAL_VOL,
0275                 7, 1, NULL, 0),
0276     SND_SOC_DAPM_SUPPLY("Right Headphone ical", ES8316_CPHP_ICAL_VOL,
0277                 3, 1, NULL, 0),
0278 
0279     SND_SOC_DAPM_OUTPUT("HPOL"),
0280     SND_SOC_DAPM_OUTPUT("HPOR"),
0281 };
0282 
0283 static const struct snd_soc_dapm_route es8316_dapm_routes[] = {
0284     /* Recording */
0285     {"MIC1", NULL, "Mic Bias"},
0286     {"MIC2", NULL, "Mic Bias"},
0287     {"MIC1", NULL, "Bias"},
0288     {"MIC2", NULL, "Bias"},
0289     {"MIC1", NULL, "Analog power"},
0290     {"MIC2", NULL, "Analog power"},
0291 
0292     {"Differential Mux", "lin1-rin1", "MIC1"},
0293     {"Differential Mux", "lin2-rin2", "MIC2"},
0294     {"Line input PGA", NULL, "Differential Mux"},
0295 
0296     {"Mono ADC", NULL, "ADC Clock"},
0297     {"Mono ADC", NULL, "ADC Vref"},
0298     {"Mono ADC", NULL, "ADC bias"},
0299     {"Mono ADC", NULL, "Line input PGA"},
0300 
0301     /* It's not clear why, but to avoid recording only silence,
0302      * the DAC clock must be running for the ADC to work.
0303      */
0304     {"Mono ADC", NULL, "DAC Clock"},
0305 
0306     {"Digital Mic Mux", "dmic disable", "Mono ADC"},
0307 
0308     {"I2S OUT", NULL, "Digital Mic Mux"},
0309 
0310     /* Playback */
0311     {"DAC Source Mux", "LDATA TO LDAC, RDATA TO RDAC", "I2S IN"},
0312 
0313     {"Left DAC", NULL, "DAC Clock"},
0314     {"Right DAC", NULL, "DAC Clock"},
0315 
0316     {"Left DAC", NULL, "DAC Vref"},
0317     {"Right DAC", NULL, "DAC Vref"},
0318 
0319     {"Left DAC", NULL, "DAC Source Mux"},
0320     {"Right DAC", NULL, "DAC Source Mux"},
0321 
0322     {"Left Headphone Mux", "lin-rin with Boost and PGA", "Line input PGA"},
0323     {"Right Headphone Mux", "lin-rin with Boost and PGA", "Line input PGA"},
0324 
0325     {"Left Headphone Mixer", "LLIN Switch", "Left Headphone Mux"},
0326     {"Left Headphone Mixer", "Left DAC Switch", "Left DAC"},
0327 
0328     {"Right Headphone Mixer", "RLIN Switch", "Right Headphone Mux"},
0329     {"Right Headphone Mixer", "Right DAC Switch", "Right DAC"},
0330 
0331     {"Left Headphone Mixer Out", NULL, "Left Headphone Mixer"},
0332     {"Right Headphone Mixer Out", NULL, "Right Headphone Mixer"},
0333 
0334     {"Left Headphone Charge Pump", NULL, "Left Headphone Mixer Out"},
0335     {"Right Headphone Charge Pump", NULL, "Right Headphone Mixer Out"},
0336 
0337     {"Left Headphone Charge Pump", NULL, "Headphone Charge Pump"},
0338     {"Right Headphone Charge Pump", NULL, "Headphone Charge Pump"},
0339 
0340     {"Left Headphone Charge Pump", NULL, "Headphone Charge Pump Clock"},
0341     {"Right Headphone Charge Pump", NULL, "Headphone Charge Pump Clock"},
0342 
0343     {"Left Headphone Driver", NULL, "Left Headphone Charge Pump"},
0344     {"Right Headphone Driver", NULL, "Right Headphone Charge Pump"},
0345 
0346     {"HPOL", NULL, "Left Headphone Driver"},
0347     {"HPOR", NULL, "Right Headphone Driver"},
0348 
0349     {"HPOL", NULL, "Left Headphone ical"},
0350     {"HPOR", NULL, "Right Headphone ical"},
0351 
0352     {"Headphone Out", NULL, "Bias"},
0353     {"Headphone Out", NULL, "Analog power"},
0354     {"HPOL", NULL, "Headphone Out"},
0355     {"HPOR", NULL, "Headphone Out"},
0356 };
0357 
0358 static int es8316_set_dai_sysclk(struct snd_soc_dai *codec_dai,
0359                  int clk_id, unsigned int freq, int dir)
0360 {
0361     struct snd_soc_component *component = codec_dai->component;
0362     struct es8316_priv *es8316 = snd_soc_component_get_drvdata(component);
0363     int i, ret;
0364     int count = 0;
0365 
0366     es8316->sysclk = freq;
0367 
0368     if (freq == 0) {
0369         es8316->sysclk_constraints.list = NULL;
0370         es8316->sysclk_constraints.count = 0;
0371 
0372         return 0;
0373     }
0374 
0375     ret = clk_set_rate(es8316->mclk, freq);
0376     if (ret)
0377         return ret;
0378 
0379     /* Limit supported sample rates to ones that can be autodetected
0380      * by the codec running in slave mode.
0381      */
0382     for (i = 0; i < NR_SUPPORTED_MCLK_LRCK_RATIOS; i++) {
0383         const unsigned int ratio = supported_mclk_lrck_ratios[i];
0384 
0385         if (freq % ratio == 0)
0386             es8316->allowed_rates[count++] = freq / ratio;
0387     }
0388 
0389     es8316->sysclk_constraints.list = es8316->allowed_rates;
0390     es8316->sysclk_constraints.count = count;
0391 
0392     return 0;
0393 }
0394 
0395 static int es8316_set_dai_fmt(struct snd_soc_dai *codec_dai,
0396                   unsigned int fmt)
0397 {
0398     struct snd_soc_component *component = codec_dai->component;
0399     u8 serdata1 = 0;
0400     u8 serdata2 = 0;
0401     u8 clksw;
0402     u8 mask;
0403 
0404     if ((fmt & SND_SOC_DAIFMT_MASTER_MASK) == SND_SOC_DAIFMT_CBP_CFP)
0405         serdata1 |= ES8316_SERDATA1_MASTER;
0406 
0407     if ((fmt & SND_SOC_DAIFMT_FORMAT_MASK) != SND_SOC_DAIFMT_I2S) {
0408         dev_err(component->dev, "Codec driver only supports I2S format\n");
0409         return -EINVAL;
0410     }
0411 
0412     /* Clock inversion */
0413     switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
0414     case SND_SOC_DAIFMT_NB_NF:
0415         break;
0416     case SND_SOC_DAIFMT_IB_IF:
0417         serdata1 |= ES8316_SERDATA1_BCLK_INV;
0418         serdata2 |= ES8316_SERDATA2_ADCLRP;
0419         break;
0420     case SND_SOC_DAIFMT_IB_NF:
0421         serdata1 |= ES8316_SERDATA1_BCLK_INV;
0422         break;
0423     case SND_SOC_DAIFMT_NB_IF:
0424         serdata2 |= ES8316_SERDATA2_ADCLRP;
0425         break;
0426     default:
0427         return -EINVAL;
0428     }
0429 
0430     mask = ES8316_SERDATA1_MASTER | ES8316_SERDATA1_BCLK_INV;
0431     snd_soc_component_update_bits(component, ES8316_SERDATA1, mask, serdata1);
0432 
0433     mask = ES8316_SERDATA2_FMT_MASK | ES8316_SERDATA2_ADCLRP;
0434     snd_soc_component_update_bits(component, ES8316_SERDATA_ADC, mask, serdata2);
0435     snd_soc_component_update_bits(component, ES8316_SERDATA_DAC, mask, serdata2);
0436 
0437     /* Enable BCLK and MCLK inputs in slave mode */
0438     clksw = ES8316_CLKMGR_CLKSW_MCLK_ON | ES8316_CLKMGR_CLKSW_BCLK_ON;
0439     snd_soc_component_update_bits(component, ES8316_CLKMGR_CLKSW, clksw, clksw);
0440 
0441     return 0;
0442 }
0443 
0444 static int es8316_pcm_startup(struct snd_pcm_substream *substream,
0445                   struct snd_soc_dai *dai)
0446 {
0447     struct snd_soc_component *component = dai->component;
0448     struct es8316_priv *es8316 = snd_soc_component_get_drvdata(component);
0449 
0450     if (es8316->sysclk_constraints.list)
0451         snd_pcm_hw_constraint_list(substream->runtime, 0,
0452                        SNDRV_PCM_HW_PARAM_RATE,
0453                        &es8316->sysclk_constraints);
0454 
0455     return 0;
0456 }
0457 
0458 static int es8316_pcm_hw_params(struct snd_pcm_substream *substream,
0459                 struct snd_pcm_hw_params *params,
0460                 struct snd_soc_dai *dai)
0461 {
0462     struct snd_soc_component *component = dai->component;
0463     struct es8316_priv *es8316 = snd_soc_component_get_drvdata(component);
0464     u8 wordlen = 0;
0465     u8 bclk_divider;
0466     u16 lrck_divider;
0467     int i;
0468 
0469     /* Validate supported sample rates that are autodetected from MCLK */
0470     for (i = 0; i < NR_SUPPORTED_MCLK_LRCK_RATIOS; i++) {
0471         const unsigned int ratio = supported_mclk_lrck_ratios[i];
0472 
0473         if (es8316->sysclk % ratio != 0)
0474             continue;
0475         if (es8316->sysclk / ratio == params_rate(params))
0476             break;
0477     }
0478     if (i == NR_SUPPORTED_MCLK_LRCK_RATIOS)
0479         return -EINVAL;
0480     lrck_divider = es8316->sysclk / params_rate(params);
0481     bclk_divider = lrck_divider / 4;
0482     switch (params_format(params)) {
0483     case SNDRV_PCM_FORMAT_S16_LE:
0484         wordlen = ES8316_SERDATA2_LEN_16;
0485         bclk_divider /= 16;
0486         break;
0487     case SNDRV_PCM_FORMAT_S20_3LE:
0488         wordlen = ES8316_SERDATA2_LEN_20;
0489         bclk_divider /= 20;
0490         break;
0491     case SNDRV_PCM_FORMAT_S24_LE:
0492         wordlen = ES8316_SERDATA2_LEN_24;
0493         bclk_divider /= 24;
0494         break;
0495     case SNDRV_PCM_FORMAT_S32_LE:
0496         wordlen = ES8316_SERDATA2_LEN_32;
0497         bclk_divider /= 32;
0498         break;
0499     default:
0500         return -EINVAL;
0501     }
0502 
0503     snd_soc_component_update_bits(component, ES8316_SERDATA_DAC,
0504                 ES8316_SERDATA2_LEN_MASK, wordlen);
0505     snd_soc_component_update_bits(component, ES8316_SERDATA_ADC,
0506                 ES8316_SERDATA2_LEN_MASK, wordlen);
0507     snd_soc_component_update_bits(component, ES8316_SERDATA1, 0x1f, bclk_divider);
0508     snd_soc_component_update_bits(component, ES8316_CLKMGR_ADCDIV1, 0x0f, lrck_divider >> 8);
0509     snd_soc_component_update_bits(component, ES8316_CLKMGR_ADCDIV2, 0xff, lrck_divider & 0xff);
0510     snd_soc_component_update_bits(component, ES8316_CLKMGR_DACDIV1, 0x0f, lrck_divider >> 8);
0511     snd_soc_component_update_bits(component, ES8316_CLKMGR_DACDIV2, 0xff, lrck_divider & 0xff);
0512     return 0;
0513 }
0514 
0515 static int es8316_mute(struct snd_soc_dai *dai, int mute, int direction)
0516 {
0517     snd_soc_component_update_bits(dai->component, ES8316_DAC_SET1, 0x20,
0518                 mute ? 0x20 : 0);
0519     return 0;
0520 }
0521 
0522 #define ES8316_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE | \
0523             SNDRV_PCM_FMTBIT_S24_LE)
0524 
0525 static const struct snd_soc_dai_ops es8316_ops = {
0526     .startup = es8316_pcm_startup,
0527     .hw_params = es8316_pcm_hw_params,
0528     .set_fmt = es8316_set_dai_fmt,
0529     .set_sysclk = es8316_set_dai_sysclk,
0530     .mute_stream = es8316_mute,
0531     .no_capture_mute = 1,
0532 };
0533 
0534 static struct snd_soc_dai_driver es8316_dai = {
0535     .name = "ES8316 HiFi",
0536     .playback = {
0537         .stream_name = "Playback",
0538         .channels_min = 1,
0539         .channels_max = 2,
0540         .rates = SNDRV_PCM_RATE_8000_48000,
0541         .formats = ES8316_FORMATS,
0542     },
0543     .capture = {
0544         .stream_name = "Capture",
0545         .channels_min = 1,
0546         .channels_max = 2,
0547         .rates = SNDRV_PCM_RATE_8000_48000,
0548         .formats = ES8316_FORMATS,
0549     },
0550     .ops = &es8316_ops,
0551     .symmetric_rate = 1,
0552 };
0553 
0554 static void es8316_enable_micbias_for_mic_gnd_short_detect(
0555     struct snd_soc_component *component)
0556 {
0557     struct snd_soc_dapm_context *dapm = snd_soc_component_get_dapm(component);
0558 
0559     snd_soc_dapm_mutex_lock(dapm);
0560     snd_soc_dapm_force_enable_pin_unlocked(dapm, "Bias");
0561     snd_soc_dapm_force_enable_pin_unlocked(dapm, "Analog power");
0562     snd_soc_dapm_force_enable_pin_unlocked(dapm, "Mic Bias");
0563     snd_soc_dapm_sync_unlocked(dapm);
0564     snd_soc_dapm_mutex_unlock(dapm);
0565 
0566     msleep(20);
0567 }
0568 
0569 static void es8316_disable_micbias_for_mic_gnd_short_detect(
0570     struct snd_soc_component *component)
0571 {
0572     struct snd_soc_dapm_context *dapm = snd_soc_component_get_dapm(component);
0573 
0574     snd_soc_dapm_mutex_lock(dapm);
0575     snd_soc_dapm_disable_pin_unlocked(dapm, "Mic Bias");
0576     snd_soc_dapm_disable_pin_unlocked(dapm, "Analog power");
0577     snd_soc_dapm_disable_pin_unlocked(dapm, "Bias");
0578     snd_soc_dapm_sync_unlocked(dapm);
0579     snd_soc_dapm_mutex_unlock(dapm);
0580 }
0581 
0582 static irqreturn_t es8316_irq(int irq, void *data)
0583 {
0584     struct es8316_priv *es8316 = data;
0585     struct snd_soc_component *comp = es8316->component;
0586     unsigned int flags;
0587 
0588     mutex_lock(&es8316->lock);
0589 
0590     regmap_read(es8316->regmap, ES8316_GPIO_FLAG, &flags);
0591     if (flags == 0x00)
0592         goto out; /* Powered-down / reset */
0593 
0594     /* Catch spurious IRQ before set_jack is called */
0595     if (!es8316->jack)
0596         goto out;
0597 
0598     if (es8316->jd_inverted)
0599         flags ^= ES8316_GPIO_FLAG_HP_NOT_INSERTED;
0600 
0601     dev_dbg(comp->dev, "gpio flags %#04x\n", flags);
0602     if (flags & ES8316_GPIO_FLAG_HP_NOT_INSERTED) {
0603         /* Jack removed, or spurious IRQ? */
0604         if (es8316->jack->status & SND_JACK_MICROPHONE)
0605             es8316_disable_micbias_for_mic_gnd_short_detect(comp);
0606 
0607         if (es8316->jack->status & SND_JACK_HEADPHONE) {
0608             snd_soc_jack_report(es8316->jack, 0,
0609                         SND_JACK_HEADSET | SND_JACK_BTN_0);
0610             dev_dbg(comp->dev, "jack unplugged\n");
0611         }
0612     } else if (!(es8316->jack->status & SND_JACK_HEADPHONE)) {
0613         /* Jack inserted, determine type */
0614         es8316_enable_micbias_for_mic_gnd_short_detect(comp);
0615         regmap_read(es8316->regmap, ES8316_GPIO_FLAG, &flags);
0616         if (es8316->jd_inverted)
0617             flags ^= ES8316_GPIO_FLAG_HP_NOT_INSERTED;
0618         dev_dbg(comp->dev, "gpio flags %#04x\n", flags);
0619         if (flags & ES8316_GPIO_FLAG_HP_NOT_INSERTED) {
0620             /* Jack unplugged underneath us */
0621             es8316_disable_micbias_for_mic_gnd_short_detect(comp);
0622         } else if (flags & ES8316_GPIO_FLAG_GM_NOT_SHORTED) {
0623             /* Open, headset */
0624             snd_soc_jack_report(es8316->jack,
0625                         SND_JACK_HEADSET,
0626                         SND_JACK_HEADSET);
0627             /* Keep mic-gnd-short detection on for button press */
0628         } else {
0629             /* Shorted, headphones */
0630             snd_soc_jack_report(es8316->jack,
0631                         SND_JACK_HEADPHONE,
0632                         SND_JACK_HEADSET);
0633             /* No longer need mic-gnd-short detection */
0634             es8316_disable_micbias_for_mic_gnd_short_detect(comp);
0635         }
0636     } else if (es8316->jack->status & SND_JACK_MICROPHONE) {
0637         /* Interrupt while jack inserted, report button state */
0638         if (flags & ES8316_GPIO_FLAG_GM_NOT_SHORTED) {
0639             /* Open, button release */
0640             snd_soc_jack_report(es8316->jack, 0, SND_JACK_BTN_0);
0641         } else {
0642             /* Short, button press */
0643             snd_soc_jack_report(es8316->jack,
0644                         SND_JACK_BTN_0,
0645                         SND_JACK_BTN_0);
0646         }
0647     }
0648 
0649 out:
0650     mutex_unlock(&es8316->lock);
0651     return IRQ_HANDLED;
0652 }
0653 
0654 static void es8316_enable_jack_detect(struct snd_soc_component *component,
0655                       struct snd_soc_jack *jack)
0656 {
0657     struct es8316_priv *es8316 = snd_soc_component_get_drvdata(component);
0658 
0659     /*
0660      * Init es8316->jd_inverted here and not in the probe, as we cannot
0661      * guarantee that the bytchr-es8316 driver, which might set this
0662      * property, will probe before us.
0663      */
0664     es8316->jd_inverted = device_property_read_bool(component->dev,
0665                             "everest,jack-detect-inverted");
0666 
0667     mutex_lock(&es8316->lock);
0668 
0669     es8316->jack = jack;
0670 
0671     if (es8316->jack->status & SND_JACK_MICROPHONE)
0672         es8316_enable_micbias_for_mic_gnd_short_detect(component);
0673 
0674     snd_soc_component_update_bits(component, ES8316_GPIO_DEBOUNCE,
0675                       ES8316_GPIO_ENABLE_INTERRUPT,
0676                       ES8316_GPIO_ENABLE_INTERRUPT);
0677 
0678     mutex_unlock(&es8316->lock);
0679 
0680     /* Enable irq and sync initial jack state */
0681     enable_irq(es8316->irq);
0682     es8316_irq(es8316->irq, es8316);
0683 }
0684 
0685 static void es8316_disable_jack_detect(struct snd_soc_component *component)
0686 {
0687     struct es8316_priv *es8316 = snd_soc_component_get_drvdata(component);
0688 
0689     if (!es8316->jack)
0690         return; /* Already disabled (or never enabled) */
0691 
0692     disable_irq(es8316->irq);
0693 
0694     mutex_lock(&es8316->lock);
0695 
0696     snd_soc_component_update_bits(component, ES8316_GPIO_DEBOUNCE,
0697                       ES8316_GPIO_ENABLE_INTERRUPT, 0);
0698 
0699     if (es8316->jack->status & SND_JACK_MICROPHONE) {
0700         es8316_disable_micbias_for_mic_gnd_short_detect(component);
0701         snd_soc_jack_report(es8316->jack, 0, SND_JACK_BTN_0);
0702     }
0703 
0704     es8316->jack = NULL;
0705 
0706     mutex_unlock(&es8316->lock);
0707 }
0708 
0709 static int es8316_set_jack(struct snd_soc_component *component,
0710                struct snd_soc_jack *jack, void *data)
0711 {
0712     if (jack)
0713         es8316_enable_jack_detect(component, jack);
0714     else
0715         es8316_disable_jack_detect(component);
0716 
0717     return 0;
0718 }
0719 
0720 static int es8316_probe(struct snd_soc_component *component)
0721 {
0722     struct es8316_priv *es8316 = snd_soc_component_get_drvdata(component);
0723     int ret;
0724 
0725     es8316->component = component;
0726 
0727     es8316->mclk = devm_clk_get_optional(component->dev, "mclk");
0728     if (IS_ERR(es8316->mclk)) {
0729         dev_err(component->dev, "unable to get mclk\n");
0730         return PTR_ERR(es8316->mclk);
0731     }
0732     if (!es8316->mclk)
0733         dev_warn(component->dev, "assuming static mclk\n");
0734 
0735     ret = clk_prepare_enable(es8316->mclk);
0736     if (ret) {
0737         dev_err(component->dev, "unable to enable mclk\n");
0738         return ret;
0739     }
0740 
0741     /* Reset codec and enable current state machine */
0742     snd_soc_component_write(component, ES8316_RESET, 0x3f);
0743     usleep_range(5000, 5500);
0744     snd_soc_component_write(component, ES8316_RESET, ES8316_RESET_CSM_ON);
0745     msleep(30);
0746 
0747     /*
0748      * Documentation is unclear, but this value from the vendor driver is
0749      * needed otherwise audio output is silent.
0750      */
0751     snd_soc_component_write(component, ES8316_SYS_VMIDSEL, 0xff);
0752 
0753     /*
0754      * Documentation for this register is unclear and incomplete,
0755      * but here is a vendor-provided value that improves volume
0756      * and quality for Intel CHT platforms.
0757      */
0758     snd_soc_component_write(component, ES8316_CLKMGR_ADCOSR, 0x32);
0759 
0760     return 0;
0761 }
0762 
0763 static void es8316_remove(struct snd_soc_component *component)
0764 {
0765     struct es8316_priv *es8316 = snd_soc_component_get_drvdata(component);
0766 
0767     clk_disable_unprepare(es8316->mclk);
0768 }
0769 
0770 static const struct snd_soc_component_driver soc_component_dev_es8316 = {
0771     .probe          = es8316_probe,
0772     .remove         = es8316_remove,
0773     .set_jack       = es8316_set_jack,
0774     .controls       = es8316_snd_controls,
0775     .num_controls       = ARRAY_SIZE(es8316_snd_controls),
0776     .dapm_widgets       = es8316_dapm_widgets,
0777     .num_dapm_widgets   = ARRAY_SIZE(es8316_dapm_widgets),
0778     .dapm_routes        = es8316_dapm_routes,
0779     .num_dapm_routes    = ARRAY_SIZE(es8316_dapm_routes),
0780     .use_pmdown_time    = 1,
0781     .endianness     = 1,
0782 };
0783 
0784 static const struct regmap_range es8316_volatile_ranges[] = {
0785     regmap_reg_range(ES8316_GPIO_FLAG, ES8316_GPIO_FLAG),
0786 };
0787 
0788 static const struct regmap_access_table es8316_volatile_table = {
0789     .yes_ranges = es8316_volatile_ranges,
0790     .n_yes_ranges   = ARRAY_SIZE(es8316_volatile_ranges),
0791 };
0792 
0793 static const struct regmap_config es8316_regmap = {
0794     .reg_bits = 8,
0795     .val_bits = 8,
0796     .max_register = 0x53,
0797     .volatile_table = &es8316_volatile_table,
0798     .cache_type = REGCACHE_RBTREE,
0799 };
0800 
0801 static int es8316_i2c_probe(struct i2c_client *i2c_client)
0802 {
0803     struct device *dev = &i2c_client->dev;
0804     struct es8316_priv *es8316;
0805     int ret;
0806 
0807     es8316 = devm_kzalloc(&i2c_client->dev, sizeof(struct es8316_priv),
0808                   GFP_KERNEL);
0809     if (es8316 == NULL)
0810         return -ENOMEM;
0811 
0812     i2c_set_clientdata(i2c_client, es8316);
0813 
0814     es8316->regmap = devm_regmap_init_i2c(i2c_client, &es8316_regmap);
0815     if (IS_ERR(es8316->regmap))
0816         return PTR_ERR(es8316->regmap);
0817 
0818     es8316->irq = i2c_client->irq;
0819     mutex_init(&es8316->lock);
0820 
0821     ret = devm_request_threaded_irq(dev, es8316->irq, NULL, es8316_irq,
0822                     IRQF_TRIGGER_HIGH | IRQF_ONESHOT | IRQF_NO_AUTOEN,
0823                     "es8316", es8316);
0824     if (ret) {
0825         dev_warn(dev, "Failed to get IRQ %d: %d\n", es8316->irq, ret);
0826         es8316->irq = -ENXIO;
0827     }
0828 
0829     return devm_snd_soc_register_component(&i2c_client->dev,
0830                       &soc_component_dev_es8316,
0831                       &es8316_dai, 1);
0832 }
0833 
0834 static const struct i2c_device_id es8316_i2c_id[] = {
0835     {"es8316", 0 },
0836     {}
0837 };
0838 MODULE_DEVICE_TABLE(i2c, es8316_i2c_id);
0839 
0840 #ifdef CONFIG_OF
0841 static const struct of_device_id es8316_of_match[] = {
0842     { .compatible = "everest,es8316", },
0843     {},
0844 };
0845 MODULE_DEVICE_TABLE(of, es8316_of_match);
0846 #endif
0847 
0848 #ifdef CONFIG_ACPI
0849 static const struct acpi_device_id es8316_acpi_match[] = {
0850     {"ESSX8316", 0},
0851     {"ESSX8336", 0},
0852     {},
0853 };
0854 MODULE_DEVICE_TABLE(acpi, es8316_acpi_match);
0855 #endif
0856 
0857 static struct i2c_driver es8316_i2c_driver = {
0858     .driver = {
0859         .name           = "es8316",
0860         .acpi_match_table   = ACPI_PTR(es8316_acpi_match),
0861         .of_match_table     = of_match_ptr(es8316_of_match),
0862     },
0863     .probe_new  = es8316_i2c_probe,
0864     .id_table   = es8316_i2c_id,
0865 };
0866 module_i2c_driver(es8316_i2c_driver);
0867 
0868 MODULE_DESCRIPTION("Everest Semi ES8316 ALSA SoC Codec Driver");
0869 MODULE_AUTHOR("David Yang <yangxiaohua@everest-semi.com>");
0870 MODULE_LICENSE("GPL v2");
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