sound/soc/codecs/es8316.c

   1 /*
   2  * es8316.c -- es8316 ALSA SoC audio driver
   3  * Copyright Everest Semiconductor Co.,Ltd
   4  *
   5  * Authors: David Yang <yangxiaohua@everest-semi.com>,
   6  *          Daniel Drake <drake@endlessm.com>
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License version 2 as
  10  * published by the Free Software Foundation.
  11  */
  12
  13 #include <linux/module.h>
  14 #include <linux/acpi.h>
  15 #include <linux/delay.h>
  16 #include <linux/i2c.h>
  17 #include <linux/mod_devicetable.h>
  18 #include <linux/regmap.h>
  19 #include <sound/pcm.h>
  20 #include <sound/pcm_params.h>
  21 #include <sound/soc.h>
  22 #include <sound/soc-dapm.h>
  23 #include <sound/tlv.h>
  24 #include "es8316.h"
  25
  26 /* In slave mode at single speed, the codec is documented as accepting 5
  27  * MCLK/LRCK ratios, but we also add ratio 400, which is commonly used on
  28  * Intel Cherry Trail platforms (19.2MHz MCLK, 48kHz LRCK).
  29  */
  30 #define NR_SUPPORTED_MCLK_LRCK_RATIOS 6
  31 static const unsigned int supported_mclk_lrck_ratios[] = {
  32         256, 384, 400, 512, 768, 1024
  33 };
  34
  35 struct es8316_priv {
  36         unsigned int sysclk;
  37         unsigned int allowed_rates[NR_SUPPORTED_MCLK_LRCK_RATIOS];
  38         struct snd_pcm_hw_constraint_list sysclk_constraints;
  39 };
  40
  41 /*
  42  * ES8316 controls
  43  */
  44 static const SNDRV_CTL_TLVD_DECLARE_DB_SCALE(dac_vol_tlv, -9600, 50, 1);
  45 static const SNDRV_CTL_TLVD_DECLARE_DB_SCALE(adc_vol_tlv, -9600, 50, 1);
  46 static const SNDRV_CTL_TLVD_DECLARE_DB_SCALE(alc_max_gain_tlv, -650, 150, 0);
  47 static const SNDRV_CTL_TLVD_DECLARE_DB_SCALE(alc_min_gain_tlv, -1200, 150, 0);
  48 static const SNDRV_CTL_TLVD_DECLARE_DB_SCALE(alc_target_tlv, -1650, 150, 0);
  49 static const SNDRV_CTL_TLVD_DECLARE_DB_SCALE(hpmixer_gain_tlv, -1200, 150, 0);
  50
  51 static const SNDRV_CTL_TLVD_DECLARE_DB_RANGE(adc_pga_gain_tlv,
  52         0, 0, TLV_DB_SCALE_ITEM(-350, 0, 0),
  53         1, 1, TLV_DB_SCALE_ITEM(0, 0, 0),
  54         2, 2, TLV_DB_SCALE_ITEM(250, 0, 0),
  55         3, 3, TLV_DB_SCALE_ITEM(450, 0, 0),
  56         4, 4, TLV_DB_SCALE_ITEM(700, 0, 0),
  57         5, 5, TLV_DB_SCALE_ITEM(1000, 0, 0),
  58         6, 6, TLV_DB_SCALE_ITEM(1300, 0, 0),
  59         7, 7, TLV_DB_SCALE_ITEM(1600, 0, 0),
  60         8, 8, TLV_DB_SCALE_ITEM(1800, 0, 0),
  61         9, 9, TLV_DB_SCALE_ITEM(2100, 0, 0),
  62         10, 10, TLV_DB_SCALE_ITEM(2400, 0, 0),
  63 );
  64
  65 static const SNDRV_CTL_TLVD_DECLARE_DB_RANGE(hpout_vol_tlv,
  66         0, 0, TLV_DB_SCALE_ITEM(-4800, 0, 0),
  67         1, 3, TLV_DB_SCALE_ITEM(-2400, 1200, 0),
  68 );
  69
  70 static const char * const ng_type_txt[] =
  71         { "Constant PGA Gain", "Mute ADC Output" };
  72 static const struct soc_enum ng_type =
  73         SOC_ENUM_SINGLE(ES8316_ADC_ALC_NG, 6, 2, ng_type_txt);
  74
  75 static const char * const adcpol_txt[] = { "Normal", "Invert" };
  76 static const struct soc_enum adcpol =
  77         SOC_ENUM_SINGLE(ES8316_ADC_MUTE, 1, 2, adcpol_txt);
  78 static const char *const dacpol_txt[] =
  79         { "Normal", "R Invert", "L Invert", "L + R Invert" };
  80 static const struct soc_enum dacpol =
  81         SOC_ENUM_SINGLE(ES8316_DAC_SET1, 0, 4, dacpol_txt);
  82
  83 static const struct snd_kcontrol_new es8316_snd_controls[] = {
  84         SOC_DOUBLE_TLV("Headphone Playback Volume", ES8316_CPHP_ICAL_VOL,
  85                        4, 0, 3, 1, hpout_vol_tlv),
  86         SOC_DOUBLE_TLV("Headphone Mixer Volume", ES8316_HPMIX_VOL,
  87                        0, 4, 7, 0, hpmixer_gain_tlv),
  88
  89         SOC_ENUM("Playback Polarity", dacpol),
  90         SOC_DOUBLE_R_TLV("DAC Playback Volume", ES8316_DAC_VOLL,
  91                          ES8316_DAC_VOLR, 0, 0xc0, 1, dac_vol_tlv),
  92         SOC_SINGLE("DAC Soft Ramp Switch", ES8316_DAC_SET1, 4, 1, 1),
  93         SOC_SINGLE("DAC Soft Ramp Rate", ES8316_DAC_SET1, 2, 4, 0),
  94         SOC_SINGLE("DAC Notch Filter Switch", ES8316_DAC_SET2, 6, 1, 0),
  95         SOC_SINGLE("DAC Double Fs Switch", ES8316_DAC_SET2, 7, 1, 0),
  96         SOC_SINGLE("DAC Stereo Enhancement", ES8316_DAC_SET3, 0, 7, 0),
  97
  98         SOC_ENUM("Capture Polarity", adcpol),
  99         SOC_SINGLE("Mic Boost Switch", ES8316_ADC_D2SEPGA, 0, 1, 0),
 100         SOC_SINGLE_TLV("ADC Capture Volume", ES8316_ADC_VOLUME,
 101                        0, 0xc0, 1, adc_vol_tlv),
 102         SOC_SINGLE_TLV("ADC PGA Gain Volume", ES8316_ADC_PGAGAIN,
 103                        4, 10, 0, adc_pga_gain_tlv),
 104         SOC_SINGLE("ADC Soft Ramp Switch", ES8316_ADC_MUTE, 4, 1, 0),
 105         SOC_SINGLE("ADC Double Fs Switch", ES8316_ADC_DMIC, 4, 1, 0),
 106
 107         SOC_SINGLE("ALC Capture Switch", ES8316_ADC_ALC1, 6, 1, 0),
 108         SOC_SINGLE_TLV("ALC Capture Max Volume", ES8316_ADC_ALC1, 0, 28, 0,
 109                        alc_max_gain_tlv),
 110         SOC_SINGLE_TLV("ALC Capture Min Volume", ES8316_ADC_ALC2, 0, 28, 0,
 111                        alc_min_gain_tlv),
 112         SOC_SINGLE_TLV("ALC Capture Target Volume", ES8316_ADC_ALC3, 4, 10, 0,
 113                        alc_target_tlv),
 114         SOC_SINGLE("ALC Capture Hold Time", ES8316_ADC_ALC3, 0, 10, 0),
 115         SOC_SINGLE("ALC Capture Decay Time", ES8316_ADC_ALC4, 4, 10, 0),
 116         SOC_SINGLE("ALC Capture Attack Time", ES8316_ADC_ALC4, 0, 10, 0),
 117         SOC_SINGLE("ALC Capture Noise Gate Switch", ES8316_ADC_ALC_NG,
 118                    5, 1, 0),
 119         SOC_SINGLE("ALC Capture Noise Gate Threshold", ES8316_ADC_ALC_NG,
 120                    0, 31, 0),
 121         SOC_ENUM("ALC Capture Noise Gate Type", ng_type),
 122 };
 123
 124 /* Analog Input Mux */
 125 static const char * const es8316_analog_in_txt[] = {
 126                 "lin1-rin1",
 127                 "lin2-rin2",
 128                 "lin1-rin1 with 20db Boost",
 129                 "lin2-rin2 with 20db Boost"
 130 };
 131 static const unsigned int es8316_analog_in_values[] = { 0, 1, 2, 3 };
 132 static const struct soc_enum es8316_analog_input_enum =
 133         SOC_VALUE_ENUM_SINGLE(ES8316_ADC_PDN_LINSEL, 4, 3,
 134                               ARRAY_SIZE(es8316_analog_in_txt),
 135                               es8316_analog_in_txt,
 136                               es8316_analog_in_values);
 137 static const struct snd_kcontrol_new es8316_analog_in_mux_controls =
 138         SOC_DAPM_ENUM("Route", es8316_analog_input_enum);
 139
 140 static const char * const es8316_dmic_txt[] = {
 141                 "dmic disable",
 142                 "dmic data at high level",
 143                 "dmic data at low level",
 144 };
 145 static const unsigned int es8316_dmic_values[] = { 0, 1, 2 };
 146 static const struct soc_enum es8316_dmic_src_enum =
 147         SOC_VALUE_ENUM_SINGLE(ES8316_ADC_DMIC, 0, 3,
 148                               ARRAY_SIZE(es8316_dmic_txt),
 149                               es8316_dmic_txt,
 150                               es8316_dmic_values);
 151 static const struct snd_kcontrol_new es8316_dmic_src_controls =
 152         SOC_DAPM_ENUM("Route", es8316_dmic_src_enum);
 153
 154 /* hp mixer mux */
 155 static const char * const es8316_hpmux_texts[] = {
 156         "lin1-rin1",
 157         "lin2-rin2",
 158         "lin-rin with Boost",
 159         "lin-rin with Boost and PGA"
 160 };
 161
 162 static const unsigned int es8316_hpmux_values[] = { 0, 1, 2, 3 };
 163
 164 static SOC_ENUM_SINGLE_DECL(es8316_left_hpmux_enum, ES8316_HPMIX_SEL,
 165         4, es8316_hpmux_texts);
 166
 167 static const struct snd_kcontrol_new es8316_left_hpmux_controls =
 168         SOC_DAPM_ENUM("Route", es8316_left_hpmux_enum);
 169
 170 static SOC_ENUM_SINGLE_DECL(es8316_right_hpmux_enum, ES8316_HPMIX_SEL,
 171         0, es8316_hpmux_texts);
 172
 173 static const struct snd_kcontrol_new es8316_right_hpmux_controls =
 174         SOC_DAPM_ENUM("Route", es8316_right_hpmux_enum);
 175
 176 /* headphone Output Mixer */
 177 static const struct snd_kcontrol_new es8316_out_left_mix[] = {
 178         SOC_DAPM_SINGLE("LLIN Switch", ES8316_HPMIX_SWITCH, 6, 1, 0),
 179         SOC_DAPM_SINGLE("Left DAC Switch", ES8316_HPMIX_SWITCH, 7, 1, 0),
 180 };
 181 static const struct snd_kcontrol_new es8316_out_right_mix[] = {
 182         SOC_DAPM_SINGLE("RLIN Switch", ES8316_HPMIX_SWITCH, 2, 1, 0),
 183         SOC_DAPM_SINGLE("Right DAC Switch", ES8316_HPMIX_SWITCH, 3, 1, 0),
 184 };
 185
 186 /* DAC data source mux */
 187 static const char * const es8316_dacsrc_texts[] = {
 188         "LDATA TO LDAC, RDATA TO RDAC",
 189         "LDATA TO LDAC, LDATA TO RDAC",
 190         "RDATA TO LDAC, RDATA TO RDAC",
 191         "RDATA TO LDAC, LDATA TO RDAC",
 192 };
 193
 194 static const unsigned int es8316_dacsrc_values[] = { 0, 1, 2, 3 };
 195
 196 static SOC_ENUM_SINGLE_DECL(es8316_dacsrc_mux_enum, ES8316_DAC_SET1,
 197         6, es8316_dacsrc_texts);
 198
 199 static const struct snd_kcontrol_new es8316_dacsrc_mux_controls =
 200         SOC_DAPM_ENUM("Route", es8316_dacsrc_mux_enum);
 201
 202 static const struct snd_soc_dapm_widget es8316_dapm_widgets[] = {
 203         SND_SOC_DAPM_SUPPLY("Bias", ES8316_SYS_PDN, 3, 1, NULL, 0),
 204         SND_SOC_DAPM_SUPPLY("Analog power", ES8316_SYS_PDN, 4, 1, NULL, 0),
 205         SND_SOC_DAPM_SUPPLY("Mic Bias", ES8316_SYS_PDN, 5, 1, NULL, 0),
 206
 207         SND_SOC_DAPM_INPUT("DMIC"),
 208         SND_SOC_DAPM_INPUT("MIC1"),
 209         SND_SOC_DAPM_INPUT("MIC2"),
 210
 211         /* Input Mux */
 212         SND_SOC_DAPM_MUX("Differential Mux", SND_SOC_NOPM, 0, 0,
 213                          &es8316_analog_in_mux_controls),
 214
 215         SND_SOC_DAPM_SUPPLY("ADC Vref", ES8316_SYS_PDN, 1, 1, NULL, 0),
 216         SND_SOC_DAPM_SUPPLY("ADC bias", ES8316_SYS_PDN, 2, 1, NULL, 0),
 217         SND_SOC_DAPM_SUPPLY("ADC Clock", ES8316_CLKMGR_CLKSW, 3, 0, NULL, 0),
 218         SND_SOC_DAPM_PGA("Line input PGA", ES8316_ADC_PDN_LINSEL,
 219                          7, 1, NULL, 0),
 220         SND_SOC_DAPM_ADC("Mono ADC", NULL, ES8316_ADC_PDN_LINSEL, 6, 1),
 221         SND_SOC_DAPM_MUX("Digital Mic Mux", SND_SOC_NOPM, 0, 0,
 222                          &es8316_dmic_src_controls),
 223
 224         /* Digital Interface */
 225         SND_SOC_DAPM_AIF_OUT("I2S OUT", "I2S1 Capture",  1,
 226                              ES8316_SERDATA_ADC, 6, 1),
 227         SND_SOC_DAPM_AIF_IN("I2S IN", "I2S1 Playback", 0,
 228                             SND_SOC_NOPM, 0, 0),
 229
 230         SND_SOC_DAPM_MUX("DAC Source Mux", SND_SOC_NOPM, 0, 0,
 231                          &es8316_dacsrc_mux_controls),
 232
 233         SND_SOC_DAPM_SUPPLY("DAC Vref", ES8316_SYS_PDN, 0, 1, NULL, 0),
 234         SND_SOC_DAPM_SUPPLY("DAC Clock", ES8316_CLKMGR_CLKSW, 2, 0, NULL, 0),
 235         SND_SOC_DAPM_DAC("Right DAC", NULL, ES8316_DAC_PDN, 0, 1),
 236         SND_SOC_DAPM_DAC("Left DAC", NULL, ES8316_DAC_PDN, 4, 1),
 237
 238         /* Headphone Output Side */
 239         SND_SOC_DAPM_MUX("Left Headphone Mux", SND_SOC_NOPM, 0, 0,
 240                          &es8316_left_hpmux_controls),
 241         SND_SOC_DAPM_MUX("Right Headphone Mux", SND_SOC_NOPM, 0, 0,
 242                          &es8316_right_hpmux_controls),
 243         SND_SOC_DAPM_MIXER("Left Headphone Mixer", ES8316_HPMIX_PDN,
 244                            5, 1, &es8316_out_left_mix[0],
 245                            ARRAY_SIZE(es8316_out_left_mix)),
 246         SND_SOC_DAPM_MIXER("Right Headphone Mixer", ES8316_HPMIX_PDN,
 247                            1, 1, &es8316_out_right_mix[0],
 248                            ARRAY_SIZE(es8316_out_right_mix)),
 249         SND_SOC_DAPM_PGA("Left Headphone Mixer Out", ES8316_HPMIX_PDN,
 250                          4, 1, NULL, 0),
 251         SND_SOC_DAPM_PGA("Right Headphone Mixer Out", ES8316_HPMIX_PDN,
 252                          0, 1, NULL, 0),
 253
 254         SND_SOC_DAPM_OUT_DRV("Left Headphone Charge Pump", ES8316_CPHP_OUTEN,
 255                              6, 0, NULL, 0),
 256         SND_SOC_DAPM_OUT_DRV("Right Headphone Charge Pump", ES8316_CPHP_OUTEN,
 257                              2, 0, NULL, 0),
 258         SND_SOC_DAPM_SUPPLY("Headphone Charge Pump", ES8316_CPHP_PDN2,
 259                             5, 1, NULL, 0),
 260         SND_SOC_DAPM_SUPPLY("Headphone Charge Pump Clock", ES8316_CLKMGR_CLKSW,
 261                             4, 0, NULL, 0),
 262
 263         SND_SOC_DAPM_OUT_DRV("Left Headphone Driver", ES8316_CPHP_OUTEN,
 264                              5, 0, NULL, 0),
 265         SND_SOC_DAPM_OUT_DRV("Right Headphone Driver", ES8316_CPHP_OUTEN,
 266                              1, 0, NULL, 0),
 267         SND_SOC_DAPM_SUPPLY("Headphone Out", ES8316_CPHP_PDN1, 2, 1, NULL, 0),
 268
 269         /* pdn_Lical and pdn_Rical bits are documented as Reserved, but must
 270          * be explicitly unset in order to enable HP output
 271          */
 272         SND_SOC_DAPM_SUPPLY("Left Headphone ical", ES8316_CPHP_ICAL_VOL,
 273                             7, 1, NULL, 0),
 274         SND_SOC_DAPM_SUPPLY("Right Headphone ical", ES8316_CPHP_ICAL_VOL,
 275                             3, 1, NULL, 0),
 276
 277         SND_SOC_DAPM_OUTPUT("HPOL"),
 278         SND_SOC_DAPM_OUTPUT("HPOR"),
 279 };
 280
 281 static const struct snd_soc_dapm_route es8316_dapm_routes[] = {
 282         /* Recording */
 283         {"MIC1", NULL, "Mic Bias"},
 284         {"MIC2", NULL, "Mic Bias"},
 285         {"MIC1", NULL, "Bias"},
 286         {"MIC2", NULL, "Bias"},
 287         {"MIC1", NULL, "Analog power"},
 288         {"MIC2", NULL, "Analog power"},
 289
 290         {"Differential Mux", "lin1-rin1", "MIC1"},
 291         {"Differential Mux", "lin2-rin2", "MIC2"},
 292         {"Line input PGA", NULL, "Differential Mux"},
 293
 294         {"Mono ADC", NULL, "ADC Clock"},
 295         {"Mono ADC", NULL, "ADC Vref"},
 296         {"Mono ADC", NULL, "ADC bias"},
 297         {"Mono ADC", NULL, "Line input PGA"},
 298
 299         /* It's not clear why, but to avoid recording only silence,
 300          * the DAC clock must be running for the ADC to work.
 301          */
 302         {"Mono ADC", NULL, "DAC Clock"},
 303
 304         {"Digital Mic Mux", "dmic disable", "Mono ADC"},
 305
 306         {"I2S OUT", NULL, "Digital Mic Mux"},
 307
 308         /* Playback */
 309         {"DAC Source Mux", "LDATA TO LDAC, RDATA TO RDAC", "I2S IN"},
 310
 311         {"Left DAC", NULL, "DAC Clock"},
 312         {"Right DAC", NULL, "DAC Clock"},
 313
 314         {"Left DAC", NULL, "DAC Vref"},
 315         {"Right DAC", NULL, "DAC Vref"},
 316
 317         {"Left DAC", NULL, "DAC Source Mux"},
 318         {"Right DAC", NULL, "DAC Source Mux"},
 319
 320         {"Left Headphone Mux", "lin-rin with Boost and PGA", "Line input PGA"},
 321         {"Right Headphone Mux", "lin-rin with Boost and PGA", "Line input PGA"},
 322
 323         {"Left Headphone Mixer", "LLIN Switch", "Left Headphone Mux"},
 324         {"Left Headphone Mixer", "Left DAC Switch", "Left DAC"},
 325
 326         {"Right Headphone Mixer", "RLIN Switch", "Right Headphone Mux"},
 327         {"Right Headphone Mixer", "Right DAC Switch", "Right DAC"},
 328
 329         {"Left Headphone Mixer Out", NULL, "Left Headphone Mixer"},
 330         {"Right Headphone Mixer Out", NULL, "Right Headphone Mixer"},
 331
 332         {"Left Headphone Charge Pump", NULL, "Left Headphone Mixer Out"},
 333         {"Right Headphone Charge Pump", NULL, "Right Headphone Mixer Out"},
 334
 335         {"Left Headphone Charge Pump", NULL, "Headphone Charge Pump"},
 336         {"Right Headphone Charge Pump", NULL, "Headphone Charge Pump"},
 337
 338         {"Left Headphone Charge Pump", NULL, "Headphone Charge Pump Clock"},
 339         {"Right Headphone Charge Pump", NULL, "Headphone Charge Pump Clock"},
 340
 341         {"Left Headphone Driver", NULL, "Left Headphone Charge Pump"},
 342         {"Right Headphone Driver", NULL, "Right Headphone Charge Pump"},
 343
 344         {"HPOL", NULL, "Left Headphone Driver"},
 345         {"HPOR", NULL, "Right Headphone Driver"},
 346
 347         {"HPOL", NULL, "Left Headphone ical"},
 348         {"HPOR", NULL, "Right Headphone ical"},
 349
 350         {"Headphone Out", NULL, "Bias"},
 351         {"Headphone Out", NULL, "Analog power"},
 352         {"HPOL", NULL, "Headphone Out"},
 353         {"HPOR", NULL, "Headphone Out"},
 354 };
 355
 356 static int es8316_set_dai_sysclk(struct snd_soc_dai *codec_dai,
 357                                  int clk_id, unsigned int freq, int dir)
 358 {
 359         struct snd_soc_codec *codec = codec_dai->codec;
 360         struct es8316_priv *es8316 = snd_soc_codec_get_drvdata(codec);
 361         int i;
 362         int count = 0;
 363
 364         es8316->sysclk = freq;
 365
 366         if (freq == 0)
 367                 return 0;
 368
 369         /* Limit supported sample rates to ones that can be autodetected
 370          * by the codec running in slave mode.
 371          */
 372         for (i = 0; i < NR_SUPPORTED_MCLK_LRCK_RATIOS; i++) {
 373                 const unsigned int ratio = supported_mclk_lrck_ratios[i];
 374
 375                 if (freq % ratio == 0)
 376                         es8316->allowed_rates[count++] = freq / ratio;
 377         }
 378
 379         es8316->sysclk_constraints.list = es8316->allowed_rates;
 380         es8316->sysclk_constraints.count = count;
 381
 382         return 0;
 383 }
 384
 385 static int es8316_set_dai_fmt(struct snd_soc_dai *codec_dai,
 386                               unsigned int fmt)
 387 {
 388         struct snd_soc_codec *codec = codec_dai->codec;
 389         u8 serdata1 = 0;
 390         u8 serdata2 = 0;
 391         u8 clksw;
 392         u8 mask;
 393
 394         if ((fmt & SND_SOC_DAIFMT_MASTER_MASK) != SND_SOC_DAIFMT_CBS_CFS) {
 395                 dev_err(codec->dev, "Codec driver only supports slave mode\n");
 396                 return -EINVAL;
 397         }
 398
 399         if ((fmt & SND_SOC_DAIFMT_FORMAT_MASK) != SND_SOC_DAIFMT_I2S) {
 400                 dev_err(codec->dev, "Codec driver only supports I2S format\n");
 401                 return -EINVAL;
 402         }
 403
 404         /* Clock inversion */
 405         switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
 406         case SND_SOC_DAIFMT_NB_NF:
 407                 break;
 408         case SND_SOC_DAIFMT_IB_IF:
 409                 serdata1 |= ES8316_SERDATA1_BCLK_INV;
 410                 serdata2 |= ES8316_SERDATA2_ADCLRP;
 411                 break;
 412         case SND_SOC_DAIFMT_IB_NF:
 413                 serdata1 |= ES8316_SERDATA1_BCLK_INV;
 414                 break;
 415         case SND_SOC_DAIFMT_NB_IF:
 416                 serdata2 |= ES8316_SERDATA2_ADCLRP;
 417                 break;
 418         default:
 419                 return -EINVAL;
 420         }
 421
 422         mask = ES8316_SERDATA1_MASTER | ES8316_SERDATA1_BCLK_INV;
 423         snd_soc_update_bits(codec, ES8316_SERDATA1, mask, serdata1);
 424
 425         mask = ES8316_SERDATA2_FMT_MASK | ES8316_SERDATA2_ADCLRP;
 426         snd_soc_update_bits(codec, ES8316_SERDATA_ADC, mask, serdata2);
 427         snd_soc_update_bits(codec, ES8316_SERDATA_DAC, mask, serdata2);
 428
 429         /* Enable BCLK and MCLK inputs in slave mode */
 430         clksw = ES8316_CLKMGR_CLKSW_MCLK_ON | ES8316_CLKMGR_CLKSW_BCLK_ON;
 431         snd_soc_update_bits(codec, ES8316_CLKMGR_CLKSW, clksw, clksw);
 432
 433         return 0;
 434 }
 435
 436 static int es8316_pcm_startup(struct snd_pcm_substream *substream,
 437                               struct snd_soc_dai *dai)
 438 {
 439         struct snd_soc_codec *codec = dai->codec;
 440         struct es8316_priv *es8316 = snd_soc_codec_get_drvdata(codec);
 441
 442         if (es8316->sysclk == 0) {
 443                 dev_err(codec->dev, "No sysclk provided\n");
 444                 return -EINVAL;
 445         }
 446
 447         /* The set of sample rates that can be supported depends on the
 448          * MCLK supplied to the CODEC.
 449          */
 450         snd_pcm_hw_constraint_list(substream->runtime, 0,
 451                                    SNDRV_PCM_HW_PARAM_RATE,
 452                                    &es8316->sysclk_constraints);
 453
 454         return 0;
 455 }
 456
 457 static int es8316_pcm_hw_params(struct snd_pcm_substream *substream,
 458                                 struct snd_pcm_hw_params *params,
 459                                 struct snd_soc_dai *dai)
 460 {
 461         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 462         struct snd_soc_codec *codec = rtd->codec;
 463         struct es8316_priv *es8316 = snd_soc_codec_get_drvdata(codec);
 464         u8 wordlen = 0;
 465
 466         if (!es8316->sysclk) {
 467                 dev_err(codec->dev, "No MCLK configured\n");
 468                 return -EINVAL;
 469         }
 470
 471         switch (params_format(params)) {
 472         case SNDRV_PCM_FORMAT_S16_LE:
 473                 wordlen = ES8316_SERDATA2_LEN_16;
 474                 break;
 475         case SNDRV_PCM_FORMAT_S20_3LE:
 476                 wordlen = ES8316_SERDATA2_LEN_20;
 477                 break;
 478         case SNDRV_PCM_FORMAT_S24_LE:
 479                 wordlen = ES8316_SERDATA2_LEN_24;
 480                 break;
 481         case SNDRV_PCM_FORMAT_S32_LE:
 482                 wordlen = ES8316_SERDATA2_LEN_32;
 483                 break;
 484         default:
 485                 return -EINVAL;
 486         }
 487
 488         snd_soc_update_bits(codec, ES8316_SERDATA_DAC,
 489                             ES8316_SERDATA2_LEN_MASK, wordlen);
 490         snd_soc_update_bits(codec, ES8316_SERDATA_ADC,
 491                             ES8316_SERDATA2_LEN_MASK, wordlen);
 492         return 0;
 493 }
 494
 495 static int es8316_mute(struct snd_soc_dai *dai, int mute)
 496 {
 497         snd_soc_update_bits(dai->codec, ES8316_DAC_SET1, 0x20,
 498                             mute ? 0x20 : 0);
 499         return 0;
 500 }
 501
 502 #define ES8316_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE | \
 503                         SNDRV_PCM_FMTBIT_S24_LE)
 504
 505 static const struct snd_soc_dai_ops es8316_ops = {
 506         .startup = es8316_pcm_startup,
 507         .hw_params = es8316_pcm_hw_params,
 508         .set_fmt = es8316_set_dai_fmt,
 509         .set_sysclk = es8316_set_dai_sysclk,
 510         .digital_mute = es8316_mute,
 511 };
 512
 513 static struct snd_soc_dai_driver es8316_dai = {
 514         .name = "ES8316 HiFi",
 515         .playback = {
 516                 .stream_name = "Playback",
 517                 .channels_min = 1,
 518                 .channels_max = 2,
 519                 .rates = SNDRV_PCM_RATE_8000_48000,
 520                 .formats = ES8316_FORMATS,
 521         },
 522         .capture = {
 523                 .stream_name = "Capture",
 524                 .channels_min = 1,
 525                 .channels_max = 2,
 526                 .rates = SNDRV_PCM_RATE_8000_48000,
 527                 .formats = ES8316_FORMATS,
 528         },
 529         .ops = &es8316_ops,
 530         .symmetric_rates = 1,
 531 };
 532
 533 static int es8316_probe(struct snd_soc_codec *codec)
 534 {
 535         /* Reset codec and enable current state machine */
 536         snd_soc_write(codec, ES8316_RESET, 0x3f);
 537         usleep_range(5000, 5500);
 538         snd_soc_write(codec, ES8316_RESET, ES8316_RESET_CSM_ON);
 539         msleep(30);
 540
 541         /*
 542          * Documentation is unclear, but this value from the vendor driver is
 543          * needed otherwise audio output is silent.
 544          */
 545         snd_soc_write(codec, ES8316_SYS_VMIDSEL, 0xff);
 546
 547         /*
 548          * Documentation for this register is unclear and incomplete,
 549          * but here is a vendor-provided value that improves volume
 550          * and quality for Intel CHT platforms.
 551          */
 552         snd_soc_write(codec, ES8316_CLKMGR_ADCOSR, 0x32);
 553
 554         return 0;
 555 }
 556
 557 static const struct snd_soc_codec_driver soc_codec_dev_es8316 = {
 558         .probe          = es8316_probe,
 559         .idle_bias_off  = true,
 560
 561         .component_driver = {
 562                 .controls               = es8316_snd_controls,
 563                 .num_controls           = ARRAY_SIZE(es8316_snd_controls),
 564                 .dapm_widgets           = es8316_dapm_widgets,
 565                 .num_dapm_widgets       = ARRAY_SIZE(es8316_dapm_widgets),
 566                 .dapm_routes            = es8316_dapm_routes,
 567                 .num_dapm_routes        = ARRAY_SIZE(es8316_dapm_routes),
 568         },
 569 };
 570
 571 static const struct regmap_config es8316_regmap = {
 572         .reg_bits = 8,
 573         .val_bits = 8,
 574         .max_register = 0x53,
 575         .cache_type = REGCACHE_RBTREE,
 576 };
 577
 578 static int es8316_i2c_probe(struct i2c_client *i2c_client,
 579                             const struct i2c_device_id *id)
 580 {
 581         struct es8316_priv *es8316;
 582         struct regmap *regmap;
 583
 584         es8316 = devm_kzalloc(&i2c_client->dev, sizeof(struct es8316_priv),
 585                               GFP_KERNEL);
 586         if (es8316 == NULL)
 587                 return -ENOMEM;
 588
 589         i2c_set_clientdata(i2c_client, es8316);
 590
 591         regmap = devm_regmap_init_i2c(i2c_client, &es8316_regmap);
 592         if (IS_ERR(regmap))
 593                 return PTR_ERR(regmap);
 594
 595         return snd_soc_register_codec(&i2c_client->dev, &soc_codec_dev_es8316,
 596                                       &es8316_dai, 1);
 597 }
 598
 599 static int es8316_i2c_remove(struct i2c_client *client)
 600 {
 601         snd_soc_unregister_codec(&client->dev);
 602         return 0;
 603 }
 604
 605 static const struct i2c_device_id es8316_i2c_id[] = {
 606         {"es8316", 0 },
 607         {}
 608 };
 609 MODULE_DEVICE_TABLE(i2c, es8316_i2c_id);
 610
 611 static const struct of_device_id es8316_of_match[] = {
 612         { .compatible = "everest,es8316", },
 613         {},
 614 };
 615 MODULE_DEVICE_TABLE(of, es8316_of_match);
 616
 617 static const struct acpi_device_id es8316_acpi_match[] = {
 618         {"ESSX8316", 0},
 619         {},
 620 };
 621 MODULE_DEVICE_TABLE(acpi, es8316_acpi_match);
 622
 623 static struct i2c_driver es8316_i2c_driver = {
 624         .driver = {
 625                 .name                   = "es8316",
 626                 .acpi_match_table       = ACPI_PTR(es8316_acpi_match),
 627                 .of_match_table         = of_match_ptr(es8316_of_match),
 628         },
 629         .probe          = es8316_i2c_probe,
 630         .remove         = es8316_i2c_remove,
 631         .id_table       = es8316_i2c_id,
 632 };
 633 module_i2c_driver(es8316_i2c_driver);
 634
 635 MODULE_DESCRIPTION("Everest Semi ES8316 ALSA SoC Codec Driver");
 636 MODULE_AUTHOR("David Yang <yangxiaohua@everest-semi.com>");
 637 MODULE_LICENSE("GPL v2");