sound/soc/codecs/es8328.c

   1 /*
   2  * es8328.c  --  ES8328 ALSA SoC Audio driver
   3  *
   4  * Copyright 2014 Sutajio Ko-Usagi PTE LTD
   5  *
   6  * Author: Sean Cross <xobs@kosagi.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/clk.h>
  14 #include <linux/delay.h>
  15 #include <linux/of_device.h>
  16 #include <linux/module.h>
  17 #include <linux/pm.h>
  18 #include <linux/regmap.h>
  19 #include <linux/slab.h>
  20 #include <linux/regulator/consumer.h>
  21 #include <sound/core.h>
  22 #include <sound/initval.h>
  23 #include <sound/pcm.h>
  24 #include <sound/pcm_params.h>
  25 #include <sound/soc.h>
  26 #include <sound/tlv.h>
  27 #include "es8328.h"
  28
  29 static const unsigned int rates_12288[] = {
  30         8000, 12000, 16000, 24000, 32000, 48000, 96000,
  31 };
  32
  33 static const int ratios_12288[] = {
  34         10, 7, 6, 4, 3, 2, 0,
  35 };
  36
  37 static const struct snd_pcm_hw_constraint_list constraints_12288 = {
  38         .count  = ARRAY_SIZE(rates_12288),
  39         .list   = rates_12288,
  40 };
  41
  42 static const unsigned int rates_11289[] = {
  43         8018, 11025, 22050, 44100, 88200,
  44 };
  45
  46 static const int ratios_11289[] = {
  47         9, 7, 4, 2, 0,
  48 };
  49
  50 static const struct snd_pcm_hw_constraint_list constraints_11289 = {
  51         .count  = ARRAY_SIZE(rates_11289),
  52         .list   = rates_11289,
  53 };
  54
  55 /* regulator supplies for sgtl5000, VDDD is an optional external supply */
  56 enum sgtl5000_regulator_supplies {
  57         DVDD,
  58         AVDD,
  59         PVDD,
  60         HPVDD,
  61         ES8328_SUPPLY_NUM
  62 };
  63
  64 /* vddd is optional supply */
  65 static const char * const supply_names[ES8328_SUPPLY_NUM] = {
  66         "DVDD",
  67         "AVDD",
  68         "PVDD",
  69         "HPVDD",
  70 };
  71
  72 #define ES8328_RATES (SNDRV_PCM_RATE_96000 | \
  73                 SNDRV_PCM_RATE_48000 | \
  74                 SNDRV_PCM_RATE_44100 | \
  75                 SNDRV_PCM_RATE_32000 | \
  76                 SNDRV_PCM_RATE_22050 | \
  77                 SNDRV_PCM_RATE_16000 | \
  78                 SNDRV_PCM_RATE_11025 | \
  79                 SNDRV_PCM_RATE_8000)
  80 #define ES8328_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | \
  81                 SNDRV_PCM_FMTBIT_S18_3LE | \
  82                 SNDRV_PCM_FMTBIT_S20_3LE | \
  83                 SNDRV_PCM_FMTBIT_S24_LE | \
  84                 SNDRV_PCM_FMTBIT_S32_LE)
  85
  86 struct es8328_priv {
  87         struct regmap *regmap;
  88         struct clk *clk;
  89         int playback_fs;
  90         bool deemph;
  91         int mclkdiv2;
  92         const struct snd_pcm_hw_constraint_list *sysclk_constraints;
  93         const int *mclk_ratios;
  94         struct regulator_bulk_data supplies[ES8328_SUPPLY_NUM];
  95 };
  96
  97 /*
  98  * ES8328 Controls
  99  */
 100
 101 static const char * const adcpol_txt[] = {"Normal", "L Invert", "R Invert",
 102                                           "L + R Invert"};
 103 static SOC_ENUM_SINGLE_DECL(adcpol,
 104                             ES8328_ADCCONTROL6, 6, adcpol_txt);
 105
 106 static const DECLARE_TLV_DB_SCALE(play_tlv, -3000, 100, 0);
 107 static const DECLARE_TLV_DB_SCALE(dac_adc_tlv, -9600, 50, 0);
 108 static const DECLARE_TLV_DB_SCALE(pga_tlv, 0, 300, 0);
 109 static const DECLARE_TLV_DB_SCALE(bypass_tlv, -1500, 300, 0);
 110 static const DECLARE_TLV_DB_SCALE(mic_tlv, 0, 300, 0);
 111
 112 static const struct {
 113         int rate;
 114         unsigned int val;
 115 } deemph_settings[] = {
 116         { 0,     ES8328_DACCONTROL6_DEEMPH_OFF },
 117         { 32000, ES8328_DACCONTROL6_DEEMPH_32k },
 118         { 44100, ES8328_DACCONTROL6_DEEMPH_44_1k },
 119         { 48000, ES8328_DACCONTROL6_DEEMPH_48k },
 120 };
 121
 122 static int es8328_set_deemph(struct snd_soc_codec *codec)
 123 {
 124         struct es8328_priv *es8328 = snd_soc_codec_get_drvdata(codec);
 125         int val, i, best;
 126
 127         /*
 128          * If we're using deemphasis select the nearest available sample
 129          * rate.
 130          */
 131         if (es8328->deemph) {
 132                 best = 0;
 133                 for (i = 1; i < ARRAY_SIZE(deemph_settings); i++) {
 134                         if (abs(deemph_settings[i].rate - es8328->playback_fs) <
 135                             abs(deemph_settings[best].rate - es8328->playback_fs))
 136                                 best = i;
 137                 }
 138
 139                 val = deemph_settings[best].val;
 140         } else {
 141                 val = ES8328_DACCONTROL6_DEEMPH_OFF;
 142         }
 143
 144         dev_dbg(codec->dev, "Set deemphasis %d\n", val);
 145
 146         return snd_soc_update_bits(codec, ES8328_DACCONTROL6,
 147                         ES8328_DACCONTROL6_DEEMPH_MASK, val);
 148 }
 149
 150 static int es8328_get_deemph(struct snd_kcontrol *kcontrol,
 151                              struct snd_ctl_elem_value *ucontrol)
 152 {
 153         struct snd_soc_codec *codec = snd_soc_kcontrol_codec(kcontrol);
 154         struct es8328_priv *es8328 = snd_soc_codec_get_drvdata(codec);
 155
 156         ucontrol->value.integer.value[0] = es8328->deemph;
 157         return 0;
 158 }
 159
 160 static int es8328_put_deemph(struct snd_kcontrol *kcontrol,
 161                              struct snd_ctl_elem_value *ucontrol)
 162 {
 163         struct snd_soc_codec *codec = snd_soc_kcontrol_codec(kcontrol);
 164         struct es8328_priv *es8328 = snd_soc_codec_get_drvdata(codec);
 165         unsigned int deemph = ucontrol->value.integer.value[0];
 166         int ret;
 167
 168         if (deemph > 1)
 169                 return -EINVAL;
 170
 171         ret = es8328_set_deemph(codec);
 172         if (ret < 0)
 173                 return ret;
 174
 175         es8328->deemph = deemph;
 176
 177         return 0;
 178 }
 179
 180
 181
 182 static const struct snd_kcontrol_new es8328_snd_controls[] = {
 183         SOC_DOUBLE_R_TLV("Capture Digital Volume",
 184                 ES8328_ADCCONTROL8, ES8328_ADCCONTROL9,
 185                  0, 0xc0, 1, dac_adc_tlv),
 186         SOC_SINGLE("Capture ZC Switch", ES8328_ADCCONTROL7, 6, 1, 0),
 187
 188         SOC_SINGLE_BOOL_EXT("DAC Deemphasis Switch", 0,
 189                     es8328_get_deemph, es8328_put_deemph),
 190
 191         SOC_ENUM("Capture Polarity", adcpol),
 192
 193         SOC_SINGLE_TLV("Left Mixer Left Bypass Volume",
 194                         ES8328_DACCONTROL17, 3, 7, 1, bypass_tlv),
 195         SOC_SINGLE_TLV("Left Mixer Right Bypass Volume",
 196                         ES8328_DACCONTROL19, 3, 7, 1, bypass_tlv),
 197         SOC_SINGLE_TLV("Right Mixer Left Bypass Volume",
 198                         ES8328_DACCONTROL18, 3, 7, 1, bypass_tlv),
 199         SOC_SINGLE_TLV("Right Mixer Right Bypass Volume",
 200                         ES8328_DACCONTROL20, 3, 7, 1, bypass_tlv),
 201
 202         SOC_DOUBLE_R_TLV("PCM Volume",
 203                         ES8328_LDACVOL, ES8328_RDACVOL,
 204                         0, ES8328_DACVOL_MAX, 1, dac_adc_tlv),
 205
 206         SOC_DOUBLE_R_TLV("Output 1 Playback Volume",
 207                         ES8328_LOUT1VOL, ES8328_ROUT1VOL,
 208                         0, ES8328_OUT1VOL_MAX, 0, play_tlv),
 209
 210         SOC_DOUBLE_R_TLV("Output 2 Playback Volume",
 211                         ES8328_LOUT2VOL, ES8328_ROUT2VOL,
 212                         0, ES8328_OUT2VOL_MAX, 0, play_tlv),
 213
 214         SOC_DOUBLE_TLV("Mic PGA Volume", ES8328_ADCCONTROL1,
 215                         4, 0, 8, 0, mic_tlv),
 216 };
 217
 218 /*
 219  * DAPM Controls
 220  */
 221
 222 static const char * const es8328_line_texts[] = {
 223         "Line 1", "Line 2", "PGA", "Differential"};
 224
 225 static const struct soc_enum es8328_lline_enum =
 226         SOC_ENUM_SINGLE(ES8328_DACCONTROL16, 3,
 227                               ARRAY_SIZE(es8328_line_texts),
 228                               es8328_line_texts);
 229 static const struct snd_kcontrol_new es8328_left_line_controls =
 230         SOC_DAPM_ENUM("Route", es8328_lline_enum);
 231
 232 static const struct soc_enum es8328_rline_enum =
 233         SOC_ENUM_SINGLE(ES8328_DACCONTROL16, 0,
 234                               ARRAY_SIZE(es8328_line_texts),
 235                               es8328_line_texts);
 236 static const struct snd_kcontrol_new es8328_right_line_controls =
 237         SOC_DAPM_ENUM("Route", es8328_lline_enum);
 238
 239 /* Left Mixer */
 240 static const struct snd_kcontrol_new es8328_left_mixer_controls[] = {
 241         SOC_DAPM_SINGLE("Playback Switch", ES8328_DACCONTROL17, 7, 1, 0),
 242         SOC_DAPM_SINGLE("Left Bypass Switch", ES8328_DACCONTROL17, 6, 1, 0),
 243         SOC_DAPM_SINGLE("Right Playback Switch", ES8328_DACCONTROL18, 7, 1, 0),
 244         SOC_DAPM_SINGLE("Right Bypass Switch", ES8328_DACCONTROL18, 6, 1, 0),
 245 };
 246
 247 /* Right Mixer */
 248 static const struct snd_kcontrol_new es8328_right_mixer_controls[] = {
 249         SOC_DAPM_SINGLE("Left Playback Switch", ES8328_DACCONTROL19, 7, 1, 0),
 250         SOC_DAPM_SINGLE("Left Bypass Switch", ES8328_DACCONTROL19, 6, 1, 0),
 251         SOC_DAPM_SINGLE("Playback Switch", ES8328_DACCONTROL20, 7, 1, 0),
 252         SOC_DAPM_SINGLE("Right Bypass Switch", ES8328_DACCONTROL20, 6, 1, 0),
 253 };
 254
 255 static const char * const es8328_pga_sel[] = {
 256         "Line 1", "Line 2", "Line 3", "Differential"};
 257
 258 /* Left PGA Mux */
 259 static const struct soc_enum es8328_lpga_enum =
 260         SOC_ENUM_SINGLE(ES8328_ADCCONTROL2, 6,
 261                               ARRAY_SIZE(es8328_pga_sel),
 262                               es8328_pga_sel);
 263 static const struct snd_kcontrol_new es8328_left_pga_controls =
 264         SOC_DAPM_ENUM("Route", es8328_lpga_enum);
 265
 266 /* Right PGA Mux */
 267 static const struct soc_enum es8328_rpga_enum =
 268         SOC_ENUM_SINGLE(ES8328_ADCCONTROL2, 4,
 269                               ARRAY_SIZE(es8328_pga_sel),
 270                               es8328_pga_sel);
 271 static const struct snd_kcontrol_new es8328_right_pga_controls =
 272         SOC_DAPM_ENUM("Route", es8328_rpga_enum);
 273
 274 /* Differential Mux */
 275 static const char * const es8328_diff_sel[] = {"Line 1", "Line 2"};
 276 static SOC_ENUM_SINGLE_DECL(diffmux,
 277                             ES8328_ADCCONTROL3, 7, es8328_diff_sel);
 278 static const struct snd_kcontrol_new es8328_diffmux_controls =
 279         SOC_DAPM_ENUM("Route", diffmux);
 280
 281 /* Mono ADC Mux */
 282 static const char * const es8328_mono_mux[] = {"Stereo", "Mono (Left)",
 283         "Mono (Right)", "Digital Mono"};
 284 static SOC_ENUM_SINGLE_DECL(monomux,
 285                             ES8328_ADCCONTROL3, 3, es8328_mono_mux);
 286 static const struct snd_kcontrol_new es8328_monomux_controls =
 287         SOC_DAPM_ENUM("Route", monomux);
 288
 289 static const struct snd_soc_dapm_widget es8328_dapm_widgets[] = {
 290         SND_SOC_DAPM_MUX("Differential Mux", SND_SOC_NOPM, 0, 0,
 291                 &es8328_diffmux_controls),
 292         SND_SOC_DAPM_MUX("Left ADC Mux", SND_SOC_NOPM, 0, 0,
 293                 &es8328_monomux_controls),
 294         SND_SOC_DAPM_MUX("Right ADC Mux", SND_SOC_NOPM, 0, 0,
 295                 &es8328_monomux_controls),
 296
 297         SND_SOC_DAPM_MUX("Left PGA Mux", ES8328_ADCPOWER,
 298                         ES8328_ADCPOWER_AINL_OFF, 1,
 299                         &es8328_left_pga_controls),
 300         SND_SOC_DAPM_MUX("Right PGA Mux", ES8328_ADCPOWER,
 301                         ES8328_ADCPOWER_AINR_OFF, 1,
 302                         &es8328_right_pga_controls),
 303
 304         SND_SOC_DAPM_MUX("Left Line Mux", SND_SOC_NOPM, 0, 0,
 305                 &es8328_left_line_controls),
 306         SND_SOC_DAPM_MUX("Right Line Mux", SND_SOC_NOPM, 0, 0,
 307                 &es8328_right_line_controls),
 308
 309         SND_SOC_DAPM_ADC("Right ADC", "Right Capture", ES8328_ADCPOWER,
 310                         ES8328_ADCPOWER_ADCR_OFF, 1),
 311         SND_SOC_DAPM_ADC("Left ADC", "Left Capture", ES8328_ADCPOWER,
 312                         ES8328_ADCPOWER_ADCL_OFF, 1),
 313
 314         SND_SOC_DAPM_SUPPLY("Mic Bias", ES8328_ADCPOWER,
 315                         ES8328_ADCPOWER_MIC_BIAS_OFF, 1, NULL, 0),
 316         SND_SOC_DAPM_SUPPLY("Mic Bias Gen", ES8328_ADCPOWER,
 317                         ES8328_ADCPOWER_ADC_BIAS_GEN_OFF, 1, NULL, 0),
 318
 319         SND_SOC_DAPM_SUPPLY("DAC STM", ES8328_CHIPPOWER,
 320                         ES8328_CHIPPOWER_DACSTM_RESET, 1, NULL, 0),
 321         SND_SOC_DAPM_SUPPLY("ADC STM", ES8328_CHIPPOWER,
 322                         ES8328_CHIPPOWER_ADCSTM_RESET, 1, NULL, 0),
 323
 324         SND_SOC_DAPM_SUPPLY("DAC DIG", ES8328_CHIPPOWER,
 325                         ES8328_CHIPPOWER_DACDIG_OFF, 1, NULL, 0),
 326         SND_SOC_DAPM_SUPPLY("ADC DIG", ES8328_CHIPPOWER,
 327                         ES8328_CHIPPOWER_ADCDIG_OFF, 1, NULL, 0),
 328
 329         SND_SOC_DAPM_SUPPLY("DAC DLL", ES8328_CHIPPOWER,
 330                         ES8328_CHIPPOWER_DACDLL_OFF, 1, NULL, 0),
 331         SND_SOC_DAPM_SUPPLY("ADC DLL", ES8328_CHIPPOWER,
 332                         ES8328_CHIPPOWER_ADCDLL_OFF, 1, NULL, 0),
 333
 334         SND_SOC_DAPM_SUPPLY("ADC Vref", ES8328_CHIPPOWER,
 335                         ES8328_CHIPPOWER_ADCVREF_OFF, 1, NULL, 0),
 336         SND_SOC_DAPM_SUPPLY("DAC Vref", ES8328_CHIPPOWER,
 337                         ES8328_CHIPPOWER_DACVREF_OFF, 1, NULL, 0),
 338
 339         SND_SOC_DAPM_DAC("Right DAC", "Right Playback", ES8328_DACPOWER,
 340                         ES8328_DACPOWER_RDAC_OFF, 1),
 341         SND_SOC_DAPM_DAC("Left DAC", "Left Playback", ES8328_DACPOWER,
 342                         ES8328_DACPOWER_LDAC_OFF, 1),
 343
 344         SND_SOC_DAPM_MIXER("Left Mixer", SND_SOC_NOPM, 0, 0,
 345                 &es8328_left_mixer_controls[0],
 346                 ARRAY_SIZE(es8328_left_mixer_controls)),
 347         SND_SOC_DAPM_MIXER("Right Mixer", SND_SOC_NOPM, 0, 0,
 348                 &es8328_right_mixer_controls[0],
 349                 ARRAY_SIZE(es8328_right_mixer_controls)),
 350
 351         SND_SOC_DAPM_PGA("Right Out 2", ES8328_DACPOWER,
 352                         ES8328_DACPOWER_ROUT2_ON, 0, NULL, 0),
 353         SND_SOC_DAPM_PGA("Left Out 2", ES8328_DACPOWER,
 354                         ES8328_DACPOWER_LOUT2_ON, 0, NULL, 0),
 355         SND_SOC_DAPM_PGA("Right Out 1", ES8328_DACPOWER,
 356                         ES8328_DACPOWER_ROUT1_ON, 0, NULL, 0),
 357         SND_SOC_DAPM_PGA("Left Out 1", ES8328_DACPOWER,
 358                         ES8328_DACPOWER_LOUT1_ON, 0, NULL, 0),
 359
 360         SND_SOC_DAPM_OUTPUT("LOUT1"),
 361         SND_SOC_DAPM_OUTPUT("ROUT1"),
 362         SND_SOC_DAPM_OUTPUT("LOUT2"),
 363         SND_SOC_DAPM_OUTPUT("ROUT2"),
 364
 365         SND_SOC_DAPM_INPUT("LINPUT1"),
 366         SND_SOC_DAPM_INPUT("LINPUT2"),
 367         SND_SOC_DAPM_INPUT("RINPUT1"),
 368         SND_SOC_DAPM_INPUT("RINPUT2"),
 369 };
 370
 371 static const struct snd_soc_dapm_route es8328_dapm_routes[] = {
 372
 373         { "Left Line Mux", "Line 1", "LINPUT1" },
 374         { "Left Line Mux", "Line 2", "LINPUT2" },
 375         { "Left Line Mux", "PGA", "Left PGA Mux" },
 376         { "Left Line Mux", "Differential", "Differential Mux" },
 377
 378         { "Right Line Mux", "Line 1", "RINPUT1" },
 379         { "Right Line Mux", "Line 2", "RINPUT2" },
 380         { "Right Line Mux", "PGA", "Right PGA Mux" },
 381         { "Right Line Mux", "Differential", "Differential Mux" },
 382
 383         { "Left PGA Mux", "Line 1", "LINPUT1" },
 384         { "Left PGA Mux", "Line 2", "LINPUT2" },
 385         { "Left PGA Mux", "Differential", "Differential Mux" },
 386
 387         { "Right PGA Mux", "Line 1", "RINPUT1" },
 388         { "Right PGA Mux", "Line 2", "RINPUT2" },
 389         { "Right PGA Mux", "Differential", "Differential Mux" },
 390
 391         { "Differential Mux", "Line 1", "LINPUT1" },
 392         { "Differential Mux", "Line 1", "RINPUT1" },
 393         { "Differential Mux", "Line 2", "LINPUT2" },
 394         { "Differential Mux", "Line 2", "RINPUT2" },
 395
 396         { "Left ADC Mux", "Stereo", "Left PGA Mux" },
 397         { "Left ADC Mux", "Mono (Left)", "Left PGA Mux" },
 398         { "Left ADC Mux", "Digital Mono", "Left PGA Mux" },
 399
 400         { "Right ADC Mux", "Stereo", "Right PGA Mux" },
 401         { "Right ADC Mux", "Mono (Right)", "Right PGA Mux" },
 402         { "Right ADC Mux", "Digital Mono", "Right PGA Mux" },
 403
 404         { "Left ADC", NULL, "Left ADC Mux" },
 405         { "Right ADC", NULL, "Right ADC Mux" },
 406
 407         { "ADC DIG", NULL, "ADC STM" },
 408         { "ADC DIG", NULL, "ADC Vref" },
 409         { "ADC DIG", NULL, "ADC DLL" },
 410
 411         { "Left ADC", NULL, "ADC DIG" },
 412         { "Right ADC", NULL, "ADC DIG" },
 413
 414         { "Mic Bias", NULL, "Mic Bias Gen" },
 415
 416         { "Left Line Mux", "Line 1", "LINPUT1" },
 417         { "Left Line Mux", "Line 2", "LINPUT2" },
 418         { "Left Line Mux", "PGA", "Left PGA Mux" },
 419         { "Left Line Mux", "Differential", "Differential Mux" },
 420
 421         { "Right Line Mux", "Line 1", "RINPUT1" },
 422         { "Right Line Mux", "Line 2", "RINPUT2" },
 423         { "Right Line Mux", "PGA", "Right PGA Mux" },
 424         { "Right Line Mux", "Differential", "Differential Mux" },
 425
 426         { "Left Out 1", NULL, "Left DAC" },
 427         { "Right Out 1", NULL, "Right DAC" },
 428         { "Left Out 2", NULL, "Left DAC" },
 429         { "Right Out 2", NULL, "Right DAC" },
 430
 431         { "Left Mixer", "Playback Switch", "Left DAC" },
 432         { "Left Mixer", "Left Bypass Switch", "Left Line Mux" },
 433         { "Left Mixer", "Right Playback Switch", "Right DAC" },
 434         { "Left Mixer", "Right Bypass Switch", "Right Line Mux" },
 435
 436         { "Right Mixer", "Left Playback Switch", "Left DAC" },
 437         { "Right Mixer", "Left Bypass Switch", "Left Line Mux" },
 438         { "Right Mixer", "Playback Switch", "Right DAC" },
 439         { "Right Mixer", "Right Bypass Switch", "Right Line Mux" },
 440
 441         { "DAC DIG", NULL, "DAC STM" },
 442         { "DAC DIG", NULL, "DAC Vref" },
 443         { "DAC DIG", NULL, "DAC DLL" },
 444
 445         { "Left DAC", NULL, "DAC DIG" },
 446         { "Right DAC", NULL, "DAC DIG" },
 447
 448         { "Left Out 1", NULL, "Left Mixer" },
 449         { "LOUT1", NULL, "Left Out 1" },
 450         { "Right Out 1", NULL, "Right Mixer" },
 451         { "ROUT1", NULL, "Right Out 1" },
 452
 453         { "Left Out 2", NULL, "Left Mixer" },
 454         { "LOUT2", NULL, "Left Out 2" },
 455         { "Right Out 2", NULL, "Right Mixer" },
 456         { "ROUT2", NULL, "Right Out 2" },
 457 };
 458
 459 static int es8328_mute(struct snd_soc_dai *dai, int mute)
 460 {
 461         return snd_soc_update_bits(dai->codec, ES8328_DACCONTROL3,
 462                         ES8328_DACCONTROL3_DACMUTE,
 463                         mute ? ES8328_DACCONTROL3_DACMUTE : 0);
 464 }
 465
 466 static int es8328_startup(struct snd_pcm_substream *substream,
 467                           struct snd_soc_dai *dai)
 468 {
 469         struct snd_soc_codec *codec = dai->codec;
 470         struct es8328_priv *es8328 = snd_soc_codec_get_drvdata(codec);
 471
 472         if (es8328->sysclk_constraints)
 473                 snd_pcm_hw_constraint_list(substream->runtime, 0,
 474                                 SNDRV_PCM_HW_PARAM_RATE,
 475                                 es8328->sysclk_constraints);
 476
 477         return 0;
 478 }
 479
 480 static int es8328_hw_params(struct snd_pcm_substream *substream,
 481         struct snd_pcm_hw_params *params,
 482         struct snd_soc_dai *dai)
 483 {
 484         struct snd_soc_codec *codec = dai->codec;
 485         struct es8328_priv *es8328 = snd_soc_codec_get_drvdata(codec);
 486         int i;
 487         int reg;
 488         int wl;
 489         int ratio;
 490
 491         if (!es8328->sysclk_constraints) {
 492                 dev_err(codec->dev, "No MCLK configured\n");
 493                 return -EINVAL;
 494         }
 495
 496         if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
 497                 reg = ES8328_DACCONTROL2;
 498         else
 499                 reg = ES8328_ADCCONTROL5;
 500
 501         for (i = 0; i < es8328->sysclk_constraints->count; i++)
 502                 if (es8328->sysclk_constraints->list[i] == params_rate(params))
 503                         break;
 504
 505         if (i == es8328->sysclk_constraints->count) {
 506                 dev_err(codec->dev, "LRCLK %d unsupported with current clock\n",
 507                         params_rate(params));
 508                 return -EINVAL;
 509         }
 510
 511         ratio = es8328->mclk_ratios[i];
 512         snd_soc_update_bits(codec, ES8328_MASTERMODE,
 513                         ES8328_MASTERMODE_MCLKDIV2,
 514                         es8328->mclkdiv2 ? ES8328_MASTERMODE_MCLKDIV2 : 0);
 515
 516         switch (params_width(params)) {
 517         case 16:
 518                 wl = 3;
 519                 break;
 520         case 18:
 521                 wl = 2;
 522                 break;
 523         case 20:
 524                 wl = 1;
 525                 break;
 526         case 24:
 527                 wl = 0;
 528                 break;
 529         case 32:
 530                 wl = 4;
 531                 break;
 532         default:
 533                 return -EINVAL;
 534         }
 535
 536         if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
 537                 snd_soc_update_bits(codec, ES8328_DACCONTROL1,
 538                                 ES8328_DACCONTROL1_DACWL_MASK,
 539                                 wl << ES8328_DACCONTROL1_DACWL_SHIFT);
 540
 541                 es8328->playback_fs = params_rate(params);
 542                 es8328_set_deemph(codec);
 543         } else
 544                 snd_soc_update_bits(codec, ES8328_ADCCONTROL4,
 545                                 ES8328_ADCCONTROL4_ADCWL_MASK,
 546                                 wl << ES8328_ADCCONTROL4_ADCWL_SHIFT);
 547
 548         return snd_soc_update_bits(codec, reg, ES8328_RATEMASK, ratio);
 549 }
 550
 551 static int es8328_set_sysclk(struct snd_soc_dai *codec_dai,
 552                 int clk_id, unsigned int freq, int dir)
 553 {
 554         struct snd_soc_codec *codec = codec_dai->codec;
 555         struct es8328_priv *es8328 = snd_soc_codec_get_drvdata(codec);
 556         int mclkdiv2 = 0;
 557
 558         switch (freq) {
 559         case 0:
 560                 es8328->sysclk_constraints = NULL;
 561                 es8328->mclk_ratios = NULL;
 562                 break;
 563         case 22579200:
 564                 mclkdiv2 = 1;
 565                 /* fallthru */
 566         case 11289600:
 567                 es8328->sysclk_constraints = &constraints_11289;
 568                 es8328->mclk_ratios = ratios_11289;
 569                 break;
 570         case 24576000:
 571                 mclkdiv2 = 1;
 572                 /* fallthru */
 573         case 12288000:
 574                 es8328->sysclk_constraints = &constraints_12288;
 575                 es8328->mclk_ratios = ratios_12288;
 576                 break;
 577         default:
 578                 return -EINVAL;
 579         }
 580
 581         es8328->mclkdiv2 = mclkdiv2;
 582         return 0;
 583 }
 584
 585 static int es8328_set_dai_fmt(struct snd_soc_dai *codec_dai,
 586                 unsigned int fmt)
 587 {
 588         struct snd_soc_codec *codec = codec_dai->codec;
 589         u8 dac_mode = 0;
 590         u8 adc_mode = 0;
 591
 592         /* set master/slave audio interface */
 593         if ((fmt & SND_SOC_DAIFMT_MASTER_MASK) != SND_SOC_DAIFMT_CBM_CFM)
 594                 return -EINVAL;
 595
 596         /* interface format */
 597         switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
 598         case SND_SOC_DAIFMT_I2S:
 599                 dac_mode |= ES8328_DACCONTROL1_DACFORMAT_I2S;
 600                 adc_mode |= ES8328_ADCCONTROL4_ADCFORMAT_I2S;
 601                 break;
 602         case SND_SOC_DAIFMT_RIGHT_J:
 603                 dac_mode |= ES8328_DACCONTROL1_DACFORMAT_RJUST;
 604                 adc_mode |= ES8328_ADCCONTROL4_ADCFORMAT_RJUST;
 605                 break;
 606         case SND_SOC_DAIFMT_LEFT_J:
 607                 dac_mode |= ES8328_DACCONTROL1_DACFORMAT_LJUST;
 608                 adc_mode |= ES8328_ADCCONTROL4_ADCFORMAT_LJUST;
 609                 break;
 610         default:
 611                 return -EINVAL;
 612         }
 613
 614         /* clock inversion */
 615         if ((fmt & SND_SOC_DAIFMT_INV_MASK) != SND_SOC_DAIFMT_NB_NF)
 616                 return -EINVAL;
 617
 618         snd_soc_update_bits(codec, ES8328_DACCONTROL1,
 619                         ES8328_DACCONTROL1_DACFORMAT_MASK, dac_mode);
 620         snd_soc_update_bits(codec, ES8328_ADCCONTROL4,
 621                         ES8328_ADCCONTROL4_ADCFORMAT_MASK, adc_mode);
 622
 623         /* Master serial port mode, with BCLK generated automatically */
 624         snd_soc_update_bits(codec, ES8328_MASTERMODE,
 625                         ES8328_MASTERMODE_MSC, ES8328_MASTERMODE_MSC);
 626
 627         return 0;
 628 }
 629
 630 static int es8328_set_bias_level(struct snd_soc_codec *codec,
 631                                  enum snd_soc_bias_level level)
 632 {
 633         switch (level) {
 634         case SND_SOC_BIAS_ON:
 635                 break;
 636
 637         case SND_SOC_BIAS_PREPARE:
 638                 /* VREF, VMID=2x50k, digital enabled */
 639                 snd_soc_write(codec, ES8328_CHIPPOWER, 0);
 640                 snd_soc_update_bits(codec, ES8328_CONTROL1,
 641                                 ES8328_CONTROL1_VMIDSEL_MASK |
 642                                 ES8328_CONTROL1_ENREF,
 643                                 ES8328_CONTROL1_VMIDSEL_50k |
 644                                 ES8328_CONTROL1_ENREF);
 645                 break;
 646
 647         case SND_SOC_BIAS_STANDBY:
 648                 if (snd_soc_codec_get_bias_level(codec) == SND_SOC_BIAS_OFF) {
 649                         snd_soc_update_bits(codec, ES8328_CONTROL1,
 650                                         ES8328_CONTROL1_VMIDSEL_MASK |
 651                                         ES8328_CONTROL1_ENREF,
 652                                         ES8328_CONTROL1_VMIDSEL_5k |
 653                                         ES8328_CONTROL1_ENREF);
 654
 655                         /* Charge caps */
 656                         msleep(100);
 657                 }
 658
 659                 snd_soc_write(codec, ES8328_CONTROL2,
 660                                 ES8328_CONTROL2_OVERCURRENT_ON |
 661                                 ES8328_CONTROL2_THERMAL_SHUTDOWN_ON);
 662
 663                 /* VREF, VMID=2*500k, digital stopped */
 664                 snd_soc_update_bits(codec, ES8328_CONTROL1,
 665                                 ES8328_CONTROL1_VMIDSEL_MASK |
 666                                 ES8328_CONTROL1_ENREF,
 667                                 ES8328_CONTROL1_VMIDSEL_500k |
 668                                 ES8328_CONTROL1_ENREF);
 669                 break;
 670
 671         case SND_SOC_BIAS_OFF:
 672                 snd_soc_update_bits(codec, ES8328_CONTROL1,
 673                                 ES8328_CONTROL1_VMIDSEL_MASK |
 674                                 ES8328_CONTROL1_ENREF,
 675                                 0);
 676                 break;
 677         }
 678         return 0;
 679 }
 680
 681 static const struct snd_soc_dai_ops es8328_dai_ops = {
 682         .startup        = es8328_startup,
 683         .hw_params      = es8328_hw_params,
 684         .digital_mute   = es8328_mute,
 685         .set_sysclk     = es8328_set_sysclk,
 686         .set_fmt        = es8328_set_dai_fmt,
 687 };
 688
 689 static struct snd_soc_dai_driver es8328_dai = {
 690         .name = "es8328-hifi-analog",
 691         .playback = {
 692                 .stream_name = "Playback",
 693                 .channels_min = 2,
 694                 .channels_max = 2,
 695                 .rates = ES8328_RATES,
 696                 .formats = ES8328_FORMATS,
 697         },
 698         .capture = {
 699                 .stream_name = "Capture",
 700                 .channels_min = 2,
 701                 .channels_max = 2,
 702                 .rates = ES8328_RATES,
 703                 .formats = ES8328_FORMATS,
 704         },
 705         .ops = &es8328_dai_ops,
 706         .symmetric_rates = 1,
 707 };
 708
 709 static int es8328_suspend(struct snd_soc_codec *codec)
 710 {
 711         struct es8328_priv *es8328;
 712         int ret;
 713
 714         es8328 = snd_soc_codec_get_drvdata(codec);
 715
 716         clk_disable_unprepare(es8328->clk);
 717
 718         ret = regulator_bulk_disable(ARRAY_SIZE(es8328->supplies),
 719                         es8328->supplies);
 720         if (ret) {
 721                 dev_err(codec->dev, "unable to disable regulators\n");
 722                 return ret;
 723         }
 724         return 0;
 725 }
 726
 727 static int es8328_resume(struct snd_soc_codec *codec)
 728 {
 729         struct regmap *regmap = dev_get_regmap(codec->dev, NULL);
 730         struct es8328_priv *es8328;
 731         int ret;
 732
 733         es8328 = snd_soc_codec_get_drvdata(codec);
 734
 735         ret = clk_prepare_enable(es8328->clk);
 736         if (ret) {
 737                 dev_err(codec->dev, "unable to enable clock\n");
 738                 return ret;
 739         }
 740
 741         ret = regulator_bulk_enable(ARRAY_SIZE(es8328->supplies),
 742                                         es8328->supplies);
 743         if (ret) {
 744                 dev_err(codec->dev, "unable to enable regulators\n");
 745                 return ret;
 746         }
 747
 748         regcache_mark_dirty(regmap);
 749         ret = regcache_sync(regmap);
 750         if (ret) {
 751                 dev_err(codec->dev, "unable to sync regcache\n");
 752                 return ret;
 753         }
 754
 755         return 0;
 756 }
 757
 758 static int es8328_codec_probe(struct snd_soc_codec *codec)
 759 {
 760         struct es8328_priv *es8328;
 761         int ret;
 762
 763         es8328 = snd_soc_codec_get_drvdata(codec);
 764
 765         ret = regulator_bulk_enable(ARRAY_SIZE(es8328->supplies),
 766                                         es8328->supplies);
 767         if (ret) {
 768                 dev_err(codec->dev, "unable to enable regulators\n");
 769                 return ret;
 770         }
 771
 772         /* Setup clocks */
 773         es8328->clk = devm_clk_get(codec->dev, NULL);
 774         if (IS_ERR(es8328->clk)) {
 775                 dev_err(codec->dev, "codec clock missing or invalid\n");
 776                 ret = PTR_ERR(es8328->clk);
 777                 goto clk_fail;
 778         }
 779
 780         ret = clk_prepare_enable(es8328->clk);
 781         if (ret) {
 782                 dev_err(codec->dev, "unable to prepare codec clk\n");
 783                 goto clk_fail;
 784         }
 785
 786         return 0;
 787
 788 clk_fail:
 789         regulator_bulk_disable(ARRAY_SIZE(es8328->supplies),
 790                                es8328->supplies);
 791         return ret;
 792 }
 793
 794 static int es8328_remove(struct snd_soc_codec *codec)
 795 {
 796         struct es8328_priv *es8328;
 797
 798         es8328 = snd_soc_codec_get_drvdata(codec);
 799
 800         if (es8328->clk)
 801                 clk_disable_unprepare(es8328->clk);
 802
 803         regulator_bulk_disable(ARRAY_SIZE(es8328->supplies),
 804                                es8328->supplies);
 805
 806         return 0;
 807 }
 808
 809 const struct regmap_config es8328_regmap_config = {
 810         .reg_bits       = 8,
 811         .val_bits       = 8,
 812         .max_register   = ES8328_REG_MAX,
 813         .cache_type     = REGCACHE_RBTREE,
 814         .use_single_rw  = true,
 815 };
 816 EXPORT_SYMBOL_GPL(es8328_regmap_config);
 817
 818 static struct snd_soc_codec_driver es8328_codec_driver = {
 819         .probe            = es8328_codec_probe,
 820         .suspend          = es8328_suspend,
 821         .resume           = es8328_resume,
 822         .remove           = es8328_remove,
 823         .set_bias_level   = es8328_set_bias_level,
 824         .suspend_bias_off = true,
 825
 826         .component_driver = {
 827                 .controls               = es8328_snd_controls,
 828                 .num_controls           = ARRAY_SIZE(es8328_snd_controls),
 829                 .dapm_widgets           = es8328_dapm_widgets,
 830                 .num_dapm_widgets       = ARRAY_SIZE(es8328_dapm_widgets),
 831                 .dapm_routes            = es8328_dapm_routes,
 832                 .num_dapm_routes        = ARRAY_SIZE(es8328_dapm_routes),
 833         },
 834 };
 835
 836 int es8328_probe(struct device *dev, struct regmap *regmap)
 837 {
 838         struct es8328_priv *es8328;
 839         int ret;
 840         int i;
 841
 842         if (IS_ERR(regmap))
 843                 return PTR_ERR(regmap);
 844
 845         es8328 = devm_kzalloc(dev, sizeof(*es8328), GFP_KERNEL);
 846         if (es8328 == NULL)
 847                 return -ENOMEM;
 848
 849         es8328->regmap = regmap;
 850
 851         for (i = 0; i < ARRAY_SIZE(es8328->supplies); i++)
 852                 es8328->supplies[i].supply = supply_names[i];
 853
 854         ret = devm_regulator_bulk_get(dev, ARRAY_SIZE(es8328->supplies),
 855                                 es8328->supplies);
 856         if (ret) {
 857                 dev_err(dev, "unable to get regulators\n");
 858                 return ret;
 859         }
 860
 861         dev_set_drvdata(dev, es8328);
 862
 863         return snd_soc_register_codec(dev,
 864                         &es8328_codec_driver, &es8328_dai, 1);
 865 }
 866 EXPORT_SYMBOL_GPL(es8328_probe);
 867
 868 MODULE_DESCRIPTION("ASoC ES8328 driver");
 869 MODULE_AUTHOR("Sean Cross <xobs@kosagi.com>");
 870 MODULE_LICENSE("GPL");