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 #define ES8328_SYSCLK_RATE_1X 11289600
  30 #define ES8328_SYSCLK_RATE_2X 22579200
  31
  32 /* Run the codec at 22.5792 or 11.2896 MHz to support these rates */
  33 static struct {
  34         int rate;
  35         u8 ratio;
  36 } mclk_ratios[] = {
  37         { 8000, 9 },
  38         {11025, 7 },
  39         {22050, 4 },
  40         {44100, 2 },
  41 };
  42
  43 /* regulator supplies for sgtl5000, VDDD is an optional external supply */
  44 enum sgtl5000_regulator_supplies {
  45         DVDD,
  46         AVDD,
  47         PVDD,
  48         HPVDD,
  49         ES8328_SUPPLY_NUM
  50 };
  51
  52 /* vddd is optional supply */
  53 static const char * const supply_names[ES8328_SUPPLY_NUM] = {
  54         "DVDD",
  55         "AVDD",
  56         "PVDD",
  57         "HPVDD",
  58 };
  59
  60 #define ES8328_RATES (SNDRV_PCM_RATE_44100 | \
  61                 SNDRV_PCM_RATE_22050 | \
  62                 SNDRV_PCM_RATE_11025)
  63 #define ES8328_FORMATS (SNDRV_PCM_FMTBIT_S16_LE)
  64
  65 struct es8328_priv {
  66         struct regmap *regmap;
  67         struct clk *clk;
  68         int playback_fs;
  69         bool deemph;
  70         struct regulator_bulk_data supplies[ES8328_SUPPLY_NUM];
  71 };
  72
  73 /*
  74  * ES8328 Controls
  75  */
  76
  77 static const char * const adcpol_txt[] = {"Normal", "L Invert", "R Invert",
  78                                           "L + R Invert"};
  79 static SOC_ENUM_SINGLE_DECL(adcpol,
  80                             ES8328_ADCCONTROL6, 6, adcpol_txt);
  81
  82 static const DECLARE_TLV_DB_SCALE(play_tlv, -3000, 100, 0);
  83 static const DECLARE_TLV_DB_SCALE(dac_adc_tlv, -9600, 50, 0);
  84 static const DECLARE_TLV_DB_SCALE(pga_tlv, 0, 300, 0);
  85 static const DECLARE_TLV_DB_SCALE(bypass_tlv, -1500, 300, 0);
  86 static const DECLARE_TLV_DB_SCALE(mic_tlv, 0, 300, 0);
  87
  88 static const int deemph_settings[] = { 0, 32000, 44100, 48000 };
  89
  90 static int es8328_set_deemph(struct snd_soc_codec *codec)
  91 {
  92         struct es8328_priv *es8328 = snd_soc_codec_get_drvdata(codec);
  93         int val, i, best;
  94
  95         /*
  96          * If we're using deemphasis select the nearest available sample
  97          * rate.
  98          */
  99         if (es8328->deemph) {
 100                 best = 1;
 101                 for (i = 2; i < ARRAY_SIZE(deemph_settings); i++) {
 102                         if (abs(deemph_settings[i] - es8328->playback_fs) <
 103                             abs(deemph_settings[best] - es8328->playback_fs))
 104                                 best = i;
 105                 }
 106
 107                 val = best << 1;
 108         } else {
 109                 val = 0;
 110         }
 111
 112         dev_dbg(codec->dev, "Set deemphasis %d\n", val);
 113
 114         return snd_soc_update_bits(codec, ES8328_DACCONTROL6, 0x6, val);
 115 }
 116
 117 static int es8328_get_deemph(struct snd_kcontrol *kcontrol,
 118                              struct snd_ctl_elem_value *ucontrol)
 119 {
 120         struct snd_soc_codec *codec = snd_soc_kcontrol_codec(kcontrol);
 121         struct es8328_priv *es8328 = snd_soc_codec_get_drvdata(codec);
 122
 123         ucontrol->value.integer.value[0] = es8328->deemph;
 124         return 0;
 125 }
 126
 127 static int es8328_put_deemph(struct snd_kcontrol *kcontrol,
 128                              struct snd_ctl_elem_value *ucontrol)
 129 {
 130         struct snd_soc_codec *codec = snd_soc_kcontrol_codec(kcontrol);
 131         struct es8328_priv *es8328 = snd_soc_codec_get_drvdata(codec);
 132         unsigned int deemph = ucontrol->value.integer.value[0];
 133         int ret;
 134
 135         if (deemph > 1)
 136                 return -EINVAL;
 137
 138         ret = es8328_set_deemph(codec);
 139         if (ret < 0)
 140                 return ret;
 141
 142         es8328->deemph = deemph;
 143
 144         return 0;
 145 }
 146
 147
 148
 149 static const struct snd_kcontrol_new es8328_snd_controls[] = {
 150         SOC_DOUBLE_R_TLV("Capture Digital Volume",
 151                 ES8328_ADCCONTROL8, ES8328_ADCCONTROL9,
 152                  0, 0xc0, 1, dac_adc_tlv),
 153         SOC_SINGLE("Capture ZC Switch", ES8328_ADCCONTROL7, 6, 1, 0),
 154
 155         SOC_SINGLE_BOOL_EXT("DAC Deemphasis Switch", 0,
 156                     es8328_get_deemph, es8328_put_deemph),
 157
 158         SOC_ENUM("Capture Polarity", adcpol),
 159
 160         SOC_SINGLE_TLV("Left Mixer Left Bypass Volume",
 161                         ES8328_DACCONTROL17, 3, 7, 1, bypass_tlv),
 162         SOC_SINGLE_TLV("Left Mixer Right Bypass Volume",
 163                         ES8328_DACCONTROL19, 3, 7, 1, bypass_tlv),
 164         SOC_SINGLE_TLV("Right Mixer Left Bypass Volume",
 165                         ES8328_DACCONTROL18, 3, 7, 1, bypass_tlv),
 166         SOC_SINGLE_TLV("Right Mixer Right Bypass Volume",
 167                         ES8328_DACCONTROL20, 3, 7, 1, bypass_tlv),
 168
 169         SOC_DOUBLE_R_TLV("PCM Volume",
 170                         ES8328_LDACVOL, ES8328_RDACVOL,
 171                         0, ES8328_DACVOL_MAX, 1, dac_adc_tlv),
 172
 173         SOC_DOUBLE_R_TLV("Output 1 Playback Volume",
 174                         ES8328_LOUT1VOL, ES8328_ROUT1VOL,
 175                         0, ES8328_OUT1VOL_MAX, 0, play_tlv),
 176
 177         SOC_DOUBLE_R_TLV("Output 2 Playback Volume",
 178                         ES8328_LOUT2VOL, ES8328_ROUT2VOL,
 179                         0, ES8328_OUT2VOL_MAX, 0, play_tlv),
 180
 181         SOC_DOUBLE_TLV("Mic PGA Volume", ES8328_ADCCONTROL1,
 182                         4, 0, 8, 0, mic_tlv),
 183 };
 184
 185 /*
 186  * DAPM Controls
 187  */
 188
 189 static const char * const es8328_line_texts[] = {
 190         "Line 1", "Line 2", "PGA", "Differential"};
 191
 192 static const struct soc_enum es8328_lline_enum =
 193         SOC_ENUM_SINGLE(ES8328_DACCONTROL16, 3,
 194                               ARRAY_SIZE(es8328_line_texts),
 195                               es8328_line_texts);
 196 static const struct snd_kcontrol_new es8328_left_line_controls =
 197         SOC_DAPM_ENUM("Route", es8328_lline_enum);
 198
 199 static const struct soc_enum es8328_rline_enum =
 200         SOC_ENUM_SINGLE(ES8328_DACCONTROL16, 0,
 201                               ARRAY_SIZE(es8328_line_texts),
 202                               es8328_line_texts);
 203 static const struct snd_kcontrol_new es8328_right_line_controls =
 204         SOC_DAPM_ENUM("Route", es8328_lline_enum);
 205
 206 /* Left Mixer */
 207 static const struct snd_kcontrol_new es8328_left_mixer_controls[] = {
 208         SOC_DAPM_SINGLE("Playback Switch", ES8328_DACCONTROL17, 7, 1, 0),
 209         SOC_DAPM_SINGLE("Left Bypass Switch", ES8328_DACCONTROL17, 6, 1, 0),
 210         SOC_DAPM_SINGLE("Right Playback Switch", ES8328_DACCONTROL18, 7, 1, 0),
 211         SOC_DAPM_SINGLE("Right Bypass Switch", ES8328_DACCONTROL18, 6, 1, 0),
 212 };
 213
 214 /* Right Mixer */
 215 static const struct snd_kcontrol_new es8328_right_mixer_controls[] = {
 216         SOC_DAPM_SINGLE("Left Playback Switch", ES8328_DACCONTROL19, 7, 1, 0),
 217         SOC_DAPM_SINGLE("Left Bypass Switch", ES8328_DACCONTROL19, 6, 1, 0),
 218         SOC_DAPM_SINGLE("Playback Switch", ES8328_DACCONTROL20, 7, 1, 0),
 219         SOC_DAPM_SINGLE("Right Bypass Switch", ES8328_DACCONTROL20, 6, 1, 0),
 220 };
 221
 222 static const char * const es8328_pga_sel[] = {
 223         "Line 1", "Line 2", "Line 3", "Differential"};
 224
 225 /* Left PGA Mux */
 226 static const struct soc_enum es8328_lpga_enum =
 227         SOC_ENUM_SINGLE(ES8328_ADCCONTROL2, 6,
 228                               ARRAY_SIZE(es8328_pga_sel),
 229                               es8328_pga_sel);
 230 static const struct snd_kcontrol_new es8328_left_pga_controls =
 231         SOC_DAPM_ENUM("Route", es8328_lpga_enum);
 232
 233 /* Right PGA Mux */
 234 static const struct soc_enum es8328_rpga_enum =
 235         SOC_ENUM_SINGLE(ES8328_ADCCONTROL2, 4,
 236                               ARRAY_SIZE(es8328_pga_sel),
 237                               es8328_pga_sel);
 238 static const struct snd_kcontrol_new es8328_right_pga_controls =
 239         SOC_DAPM_ENUM("Route", es8328_rpga_enum);
 240
 241 /* Differential Mux */
 242 static const char * const es8328_diff_sel[] = {"Line 1", "Line 2"};
 243 static SOC_ENUM_SINGLE_DECL(diffmux,
 244                             ES8328_ADCCONTROL3, 7, es8328_diff_sel);
 245 static const struct snd_kcontrol_new es8328_diffmux_controls =
 246         SOC_DAPM_ENUM("Route", diffmux);
 247
 248 /* Mono ADC Mux */
 249 static const char * const es8328_mono_mux[] = {"Stereo", "Mono (Left)",
 250         "Mono (Right)", "Digital Mono"};
 251 static SOC_ENUM_SINGLE_DECL(monomux,
 252                             ES8328_ADCCONTROL3, 3, es8328_mono_mux);
 253 static const struct snd_kcontrol_new es8328_monomux_controls =
 254         SOC_DAPM_ENUM("Route", monomux);
 255
 256 static const struct snd_soc_dapm_widget es8328_dapm_widgets[] = {
 257         SND_SOC_DAPM_MUX("Differential Mux", SND_SOC_NOPM, 0, 0,
 258                 &es8328_diffmux_controls),
 259         SND_SOC_DAPM_MUX("Left ADC Mux", SND_SOC_NOPM, 0, 0,
 260                 &es8328_monomux_controls),
 261         SND_SOC_DAPM_MUX("Right ADC Mux", SND_SOC_NOPM, 0, 0,
 262                 &es8328_monomux_controls),
 263
 264         SND_SOC_DAPM_MUX("Left PGA Mux", ES8328_ADCPOWER,
 265                         ES8328_ADCPOWER_AINL_OFF, 1,
 266                         &es8328_left_pga_controls),
 267         SND_SOC_DAPM_MUX("Right PGA Mux", ES8328_ADCPOWER,
 268                         ES8328_ADCPOWER_AINR_OFF, 1,
 269                         &es8328_right_pga_controls),
 270
 271         SND_SOC_DAPM_MUX("Left Line Mux", SND_SOC_NOPM, 0, 0,
 272                 &es8328_left_line_controls),
 273         SND_SOC_DAPM_MUX("Right Line Mux", SND_SOC_NOPM, 0, 0,
 274                 &es8328_right_line_controls),
 275
 276         SND_SOC_DAPM_ADC("Right ADC", "Right Capture", ES8328_ADCPOWER,
 277                         ES8328_ADCPOWER_ADCR_OFF, 1),
 278         SND_SOC_DAPM_ADC("Left ADC", "Left Capture", ES8328_ADCPOWER,
 279                         ES8328_ADCPOWER_ADCL_OFF, 1),
 280
 281         SND_SOC_DAPM_SUPPLY("Mic Bias", ES8328_ADCPOWER,
 282                         ES8328_ADCPOWER_MIC_BIAS_OFF, 1, NULL, 0),
 283         SND_SOC_DAPM_SUPPLY("Mic Bias Gen", ES8328_ADCPOWER,
 284                         ES8328_ADCPOWER_ADC_BIAS_GEN_OFF, 1, NULL, 0),
 285
 286         SND_SOC_DAPM_SUPPLY("DAC STM", ES8328_CHIPPOWER,
 287                         ES8328_CHIPPOWER_DACSTM_RESET, 1, NULL, 0),
 288         SND_SOC_DAPM_SUPPLY("ADC STM", ES8328_CHIPPOWER,
 289                         ES8328_CHIPPOWER_ADCSTM_RESET, 1, NULL, 0),
 290
 291         SND_SOC_DAPM_SUPPLY("DAC DIG", ES8328_CHIPPOWER,
 292                         ES8328_CHIPPOWER_DACDIG_OFF, 1, NULL, 0),
 293         SND_SOC_DAPM_SUPPLY("ADC DIG", ES8328_CHIPPOWER,
 294                         ES8328_CHIPPOWER_ADCDIG_OFF, 1, NULL, 0),
 295
 296         SND_SOC_DAPM_SUPPLY("DAC DLL", ES8328_CHIPPOWER,
 297                         ES8328_CHIPPOWER_DACDLL_OFF, 1, NULL, 0),
 298         SND_SOC_DAPM_SUPPLY("ADC DLL", ES8328_CHIPPOWER,
 299                         ES8328_CHIPPOWER_ADCDLL_OFF, 1, NULL, 0),
 300
 301         SND_SOC_DAPM_SUPPLY("ADC Vref", ES8328_CHIPPOWER,
 302                         ES8328_CHIPPOWER_ADCVREF_OFF, 1, NULL, 0),
 303         SND_SOC_DAPM_SUPPLY("DAC Vref", ES8328_CHIPPOWER,
 304                         ES8328_CHIPPOWER_DACVREF_OFF, 1, NULL, 0),
 305
 306         SND_SOC_DAPM_DAC("Right DAC", "Right Playback", ES8328_DACPOWER,
 307                         ES8328_DACPOWER_RDAC_OFF, 1),
 308         SND_SOC_DAPM_DAC("Left DAC", "Left Playback", ES8328_DACPOWER,
 309                         ES8328_DACPOWER_LDAC_OFF, 1),
 310
 311         SND_SOC_DAPM_MIXER("Left Mixer", SND_SOC_NOPM, 0, 0,
 312                 &es8328_left_mixer_controls[0],
 313                 ARRAY_SIZE(es8328_left_mixer_controls)),
 314         SND_SOC_DAPM_MIXER("Right Mixer", SND_SOC_NOPM, 0, 0,
 315                 &es8328_right_mixer_controls[0],
 316                 ARRAY_SIZE(es8328_right_mixer_controls)),
 317
 318         SND_SOC_DAPM_PGA("Right Out 2", ES8328_DACPOWER,
 319                         ES8328_DACPOWER_ROUT2_ON, 0, NULL, 0),
 320         SND_SOC_DAPM_PGA("Left Out 2", ES8328_DACPOWER,
 321                         ES8328_DACPOWER_LOUT2_ON, 0, NULL, 0),
 322         SND_SOC_DAPM_PGA("Right Out 1", ES8328_DACPOWER,
 323                         ES8328_DACPOWER_ROUT1_ON, 0, NULL, 0),
 324         SND_SOC_DAPM_PGA("Left Out 1", ES8328_DACPOWER,
 325                         ES8328_DACPOWER_LOUT1_ON, 0, NULL, 0),
 326
 327         SND_SOC_DAPM_OUTPUT("LOUT1"),
 328         SND_SOC_DAPM_OUTPUT("ROUT1"),
 329         SND_SOC_DAPM_OUTPUT("LOUT2"),
 330         SND_SOC_DAPM_OUTPUT("ROUT2"),
 331
 332         SND_SOC_DAPM_INPUT("LINPUT1"),
 333         SND_SOC_DAPM_INPUT("LINPUT2"),
 334         SND_SOC_DAPM_INPUT("RINPUT1"),
 335         SND_SOC_DAPM_INPUT("RINPUT2"),
 336 };
 337
 338 static const struct snd_soc_dapm_route es8328_dapm_routes[] = {
 339
 340         { "Left Line Mux", "Line 1", "LINPUT1" },
 341         { "Left Line Mux", "Line 2", "LINPUT2" },
 342         { "Left Line Mux", "PGA", "Left PGA Mux" },
 343         { "Left Line Mux", "Differential", "Differential Mux" },
 344
 345         { "Right Line Mux", "Line 1", "RINPUT1" },
 346         { "Right Line Mux", "Line 2", "RINPUT2" },
 347         { "Right Line Mux", "PGA", "Right PGA Mux" },
 348         { "Right Line Mux", "Differential", "Differential Mux" },
 349
 350         { "Left PGA Mux", "Line 1", "LINPUT1" },
 351         { "Left PGA Mux", "Line 2", "LINPUT2" },
 352         { "Left PGA Mux", "Differential", "Differential Mux" },
 353
 354         { "Right PGA Mux", "Line 1", "RINPUT1" },
 355         { "Right PGA Mux", "Line 2", "RINPUT2" },
 356         { "Right PGA Mux", "Differential", "Differential Mux" },
 357
 358         { "Differential Mux", "Line 1", "LINPUT1" },
 359         { "Differential Mux", "Line 1", "RINPUT1" },
 360         { "Differential Mux", "Line 2", "LINPUT2" },
 361         { "Differential Mux", "Line 2", "RINPUT2" },
 362
 363         { "Left ADC Mux", "Stereo", "Left PGA Mux" },
 364         { "Left ADC Mux", "Mono (Left)", "Left PGA Mux" },
 365         { "Left ADC Mux", "Digital Mono", "Left PGA Mux" },
 366
 367         { "Right ADC Mux", "Stereo", "Right PGA Mux" },
 368         { "Right ADC Mux", "Mono (Right)", "Right PGA Mux" },
 369         { "Right ADC Mux", "Digital Mono", "Right PGA Mux" },
 370
 371         { "Left ADC", NULL, "Left ADC Mux" },
 372         { "Right ADC", NULL, "Right ADC Mux" },
 373
 374         { "ADC DIG", NULL, "ADC STM" },
 375         { "ADC DIG", NULL, "ADC Vref" },
 376         { "ADC DIG", NULL, "ADC DLL" },
 377
 378         { "Left ADC", NULL, "ADC DIG" },
 379         { "Right ADC", NULL, "ADC DIG" },
 380
 381         { "Mic Bias", NULL, "Mic Bias Gen" },
 382
 383         { "Left Line Mux", "Line 1", "LINPUT1" },
 384         { "Left Line Mux", "Line 2", "LINPUT2" },
 385         { "Left Line Mux", "PGA", "Left PGA Mux" },
 386         { "Left Line Mux", "Differential", "Differential Mux" },
 387
 388         { "Right Line Mux", "Line 1", "RINPUT1" },
 389         { "Right Line Mux", "Line 2", "RINPUT2" },
 390         { "Right Line Mux", "PGA", "Right PGA Mux" },
 391         { "Right Line Mux", "Differential", "Differential Mux" },
 392
 393         { "Left Out 1", NULL, "Left DAC" },
 394         { "Right Out 1", NULL, "Right DAC" },
 395         { "Left Out 2", NULL, "Left DAC" },
 396         { "Right Out 2", NULL, "Right DAC" },
 397
 398         { "Left Mixer", "Playback Switch", "Left DAC" },
 399         { "Left Mixer", "Left Bypass Switch", "Left Line Mux" },
 400         { "Left Mixer", "Right Playback Switch", "Right DAC" },
 401         { "Left Mixer", "Right Bypass Switch", "Right Line Mux" },
 402
 403         { "Right Mixer", "Left Playback Switch", "Left DAC" },
 404         { "Right Mixer", "Left Bypass Switch", "Left Line Mux" },
 405         { "Right Mixer", "Playback Switch", "Right DAC" },
 406         { "Right Mixer", "Right Bypass Switch", "Right Line Mux" },
 407
 408         { "DAC DIG", NULL, "DAC STM" },
 409         { "DAC DIG", NULL, "DAC Vref" },
 410         { "DAC DIG", NULL, "DAC DLL" },
 411
 412         { "Left DAC", NULL, "DAC DIG" },
 413         { "Right DAC", NULL, "DAC DIG" },
 414
 415         { "Left Out 1", NULL, "Left Mixer" },
 416         { "LOUT1", NULL, "Left Out 1" },
 417         { "Right Out 1", NULL, "Right Mixer" },
 418         { "ROUT1", NULL, "Right Out 1" },
 419
 420         { "Left Out 2", NULL, "Left Mixer" },
 421         { "LOUT2", NULL, "Left Out 2" },
 422         { "Right Out 2", NULL, "Right Mixer" },
 423         { "ROUT2", NULL, "Right Out 2" },
 424 };
 425
 426 static int es8328_mute(struct snd_soc_dai *dai, int mute)
 427 {
 428         return snd_soc_update_bits(dai->codec, ES8328_DACCONTROL3,
 429                         ES8328_DACCONTROL3_DACMUTE,
 430                         mute ? ES8328_DACCONTROL3_DACMUTE : 0);
 431 }
 432
 433 static int es8328_hw_params(struct snd_pcm_substream *substream,
 434         struct snd_pcm_hw_params *params,
 435         struct snd_soc_dai *dai)
 436 {
 437         struct snd_soc_codec *codec = dai->codec;
 438         struct es8328_priv *es8328 = snd_soc_codec_get_drvdata(codec);
 439         int clk_rate;
 440         int i;
 441         int reg;
 442         u8 ratio;
 443
 444         if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
 445                 reg = ES8328_DACCONTROL2;
 446         else
 447                 reg = ES8328_ADCCONTROL5;
 448
 449         clk_rate = clk_get_rate(es8328->clk);
 450
 451         if ((clk_rate != ES8328_SYSCLK_RATE_1X) &&
 452                 (clk_rate != ES8328_SYSCLK_RATE_2X)) {
 453                 dev_err(codec->dev,
 454                         "%s: clock is running at %d Hz, not %d or %d Hz\n",
 455                          __func__, clk_rate,
 456                          ES8328_SYSCLK_RATE_1X, ES8328_SYSCLK_RATE_2X);
 457                 return -EINVAL;
 458         }
 459
 460         /* find master mode MCLK to sampling frequency ratio */
 461         ratio = mclk_ratios[0].rate;
 462         for (i = 1; i < ARRAY_SIZE(mclk_ratios); i++)
 463                 if (params_rate(params) <= mclk_ratios[i].rate)
 464                         ratio = mclk_ratios[i].ratio;
 465
 466         if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
 467                 es8328->playback_fs = params_rate(params);
 468                 es8328_set_deemph(codec);
 469         }
 470
 471         return snd_soc_update_bits(codec, reg, ES8328_RATEMASK, ratio);
 472 }
 473
 474 static int es8328_set_dai_fmt(struct snd_soc_dai *codec_dai,
 475                 unsigned int fmt)
 476 {
 477         struct snd_soc_codec *codec = codec_dai->codec;
 478         struct es8328_priv *es8328 = snd_soc_codec_get_drvdata(codec);
 479         int clk_rate;
 480         u8 mode = ES8328_DACCONTROL1_DACWL_16;
 481
 482         /* set master/slave audio interface */
 483         if ((fmt & SND_SOC_DAIFMT_MASTER_MASK) != SND_SOC_DAIFMT_CBM_CFM)
 484                 return -EINVAL;
 485
 486         /* interface format */
 487         switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
 488         case SND_SOC_DAIFMT_I2S:
 489                 mode |= ES8328_DACCONTROL1_DACFORMAT_I2S;
 490                 break;
 491         case SND_SOC_DAIFMT_RIGHT_J:
 492                 mode |= ES8328_DACCONTROL1_DACFORMAT_RJUST;
 493                 break;
 494         case SND_SOC_DAIFMT_LEFT_J:
 495                 mode |= ES8328_DACCONTROL1_DACFORMAT_LJUST;
 496                 break;
 497         default:
 498                 return -EINVAL;
 499         }
 500
 501         /* clock inversion */
 502         if ((fmt & SND_SOC_DAIFMT_INV_MASK) != SND_SOC_DAIFMT_NB_NF)
 503                 return -EINVAL;
 504
 505         snd_soc_write(codec, ES8328_DACCONTROL1, mode);
 506         snd_soc_write(codec, ES8328_ADCCONTROL4, mode);
 507
 508         /* Master serial port mode, with BCLK generated automatically */
 509         clk_rate = clk_get_rate(es8328->clk);
 510         if (clk_rate == ES8328_SYSCLK_RATE_1X)
 511                 snd_soc_write(codec, ES8328_MASTERMODE,
 512                                 ES8328_MASTERMODE_MSC);
 513         else
 514                 snd_soc_write(codec, ES8328_MASTERMODE,
 515                                 ES8328_MASTERMODE_MCLKDIV2 |
 516                                 ES8328_MASTERMODE_MSC);
 517
 518         return 0;
 519 }
 520
 521 static int es8328_set_bias_level(struct snd_soc_codec *codec,
 522                                  enum snd_soc_bias_level level)
 523 {
 524         switch (level) {
 525         case SND_SOC_BIAS_ON:
 526                 break;
 527
 528         case SND_SOC_BIAS_PREPARE:
 529                 /* VREF, VMID=2x50k, digital enabled */
 530                 snd_soc_write(codec, ES8328_CHIPPOWER, 0);
 531                 snd_soc_update_bits(codec, ES8328_CONTROL1,
 532                                 ES8328_CONTROL1_VMIDSEL_MASK |
 533                                 ES8328_CONTROL1_ENREF,
 534                                 ES8328_CONTROL1_VMIDSEL_50k |
 535                                 ES8328_CONTROL1_ENREF);
 536                 break;
 537
 538         case SND_SOC_BIAS_STANDBY:
 539                 if (snd_soc_codec_get_bias_level(codec) == SND_SOC_BIAS_OFF) {
 540                         snd_soc_update_bits(codec, ES8328_CONTROL1,
 541                                         ES8328_CONTROL1_VMIDSEL_MASK |
 542                                         ES8328_CONTROL1_ENREF,
 543                                         ES8328_CONTROL1_VMIDSEL_5k |
 544                                         ES8328_CONTROL1_ENREF);
 545
 546                         /* Charge caps */
 547                         msleep(100);
 548                 }
 549
 550                 snd_soc_write(codec, ES8328_CONTROL2,
 551                                 ES8328_CONTROL2_OVERCURRENT_ON |
 552                                 ES8328_CONTROL2_THERMAL_SHUTDOWN_ON);
 553
 554                 /* VREF, VMID=2*500k, digital stopped */
 555                 snd_soc_update_bits(codec, ES8328_CONTROL1,
 556                                 ES8328_CONTROL1_VMIDSEL_MASK |
 557                                 ES8328_CONTROL1_ENREF,
 558                                 ES8328_CONTROL1_VMIDSEL_500k |
 559                                 ES8328_CONTROL1_ENREF);
 560                 break;
 561
 562         case SND_SOC_BIAS_OFF:
 563                 snd_soc_update_bits(codec, ES8328_CONTROL1,
 564                                 ES8328_CONTROL1_VMIDSEL_MASK |
 565                                 ES8328_CONTROL1_ENREF,
 566                                 0);
 567                 break;
 568         }
 569         return 0;
 570 }
 571
 572 static const struct snd_soc_dai_ops es8328_dai_ops = {
 573         .hw_params      = es8328_hw_params,
 574         .digital_mute   = es8328_mute,
 575         .set_fmt        = es8328_set_dai_fmt,
 576 };
 577
 578 static struct snd_soc_dai_driver es8328_dai = {
 579         .name = "es8328-hifi-analog",
 580         .playback = {
 581                 .stream_name = "Playback",
 582                 .channels_min = 2,
 583                 .channels_max = 2,
 584                 .rates = ES8328_RATES,
 585                 .formats = ES8328_FORMATS,
 586         },
 587         .capture = {
 588                 .stream_name = "Capture",
 589                 .channels_min = 2,
 590                 .channels_max = 2,
 591                 .rates = ES8328_RATES,
 592                 .formats = ES8328_FORMATS,
 593         },
 594         .ops = &es8328_dai_ops,
 595 };
 596
 597 static int es8328_suspend(struct snd_soc_codec *codec)
 598 {
 599         struct es8328_priv *es8328;
 600         int ret;
 601
 602         es8328 = snd_soc_codec_get_drvdata(codec);
 603
 604         clk_disable_unprepare(es8328->clk);
 605
 606         ret = regulator_bulk_disable(ARRAY_SIZE(es8328->supplies),
 607                         es8328->supplies);
 608         if (ret) {
 609                 dev_err(codec->dev, "unable to disable regulators\n");
 610                 return ret;
 611         }
 612         return 0;
 613 }
 614
 615 static int es8328_resume(struct snd_soc_codec *codec)
 616 {
 617         struct regmap *regmap = dev_get_regmap(codec->dev, NULL);
 618         struct es8328_priv *es8328;
 619         int ret;
 620
 621         es8328 = snd_soc_codec_get_drvdata(codec);
 622
 623         ret = clk_prepare_enable(es8328->clk);
 624         if (ret) {
 625                 dev_err(codec->dev, "unable to enable clock\n");
 626                 return ret;
 627         }
 628
 629         ret = regulator_bulk_enable(ARRAY_SIZE(es8328->supplies),
 630                                         es8328->supplies);
 631         if (ret) {
 632                 dev_err(codec->dev, "unable to enable regulators\n");
 633                 return ret;
 634         }
 635
 636         regcache_mark_dirty(regmap);
 637         ret = regcache_sync(regmap);
 638         if (ret) {
 639                 dev_err(codec->dev, "unable to sync regcache\n");
 640                 return ret;
 641         }
 642
 643         return 0;
 644 }
 645
 646 static int es8328_codec_probe(struct snd_soc_codec *codec)
 647 {
 648         struct es8328_priv *es8328;
 649         int ret;
 650
 651         es8328 = snd_soc_codec_get_drvdata(codec);
 652
 653         ret = regulator_bulk_enable(ARRAY_SIZE(es8328->supplies),
 654                                         es8328->supplies);
 655         if (ret) {
 656                 dev_err(codec->dev, "unable to enable regulators\n");
 657                 return ret;
 658         }
 659
 660         /* Setup clocks */
 661         es8328->clk = devm_clk_get(codec->dev, NULL);
 662         if (IS_ERR(es8328->clk)) {
 663                 dev_err(codec->dev, "codec clock missing or invalid\n");
 664                 ret = PTR_ERR(es8328->clk);
 665                 goto clk_fail;
 666         }
 667
 668         ret = clk_prepare_enable(es8328->clk);
 669         if (ret) {
 670                 dev_err(codec->dev, "unable to prepare codec clk\n");
 671                 goto clk_fail;
 672         }
 673
 674         return 0;
 675
 676 clk_fail:
 677         regulator_bulk_disable(ARRAY_SIZE(es8328->supplies),
 678                                es8328->supplies);
 679         return ret;
 680 }
 681
 682 static int es8328_remove(struct snd_soc_codec *codec)
 683 {
 684         struct es8328_priv *es8328;
 685
 686         es8328 = snd_soc_codec_get_drvdata(codec);
 687
 688         if (es8328->clk)
 689                 clk_disable_unprepare(es8328->clk);
 690
 691         regulator_bulk_disable(ARRAY_SIZE(es8328->supplies),
 692                                es8328->supplies);
 693
 694         return 0;
 695 }
 696
 697 const struct regmap_config es8328_regmap_config = {
 698         .reg_bits       = 8,
 699         .val_bits       = 8,
 700         .max_register   = ES8328_REG_MAX,
 701         .cache_type     = REGCACHE_RBTREE,
 702 };
 703 EXPORT_SYMBOL_GPL(es8328_regmap_config);
 704
 705 static struct snd_soc_codec_driver es8328_codec_driver = {
 706         .probe            = es8328_codec_probe,
 707         .suspend          = es8328_suspend,
 708         .resume           = es8328_resume,
 709         .remove           = es8328_remove,
 710         .set_bias_level   = es8328_set_bias_level,
 711         .suspend_bias_off = true,
 712
 713         .controls         = es8328_snd_controls,
 714         .num_controls     = ARRAY_SIZE(es8328_snd_controls),
 715         .dapm_widgets     = es8328_dapm_widgets,
 716         .num_dapm_widgets = ARRAY_SIZE(es8328_dapm_widgets),
 717         .dapm_routes      = es8328_dapm_routes,
 718         .num_dapm_routes  = ARRAY_SIZE(es8328_dapm_routes),
 719 };
 720
 721 int es8328_probe(struct device *dev, struct regmap *regmap)
 722 {
 723         struct es8328_priv *es8328;
 724         int ret;
 725         int i;
 726
 727         if (IS_ERR(regmap))
 728                 return PTR_ERR(regmap);
 729
 730         es8328 = devm_kzalloc(dev, sizeof(*es8328), GFP_KERNEL);
 731         if (es8328 == NULL)
 732                 return -ENOMEM;
 733
 734         es8328->regmap = regmap;
 735
 736         for (i = 0; i < ARRAY_SIZE(es8328->supplies); i++)
 737                 es8328->supplies[i].supply = supply_names[i];
 738
 739         ret = devm_regulator_bulk_get(dev, ARRAY_SIZE(es8328->supplies),
 740                                 es8328->supplies);
 741         if (ret) {
 742                 dev_err(dev, "unable to get regulators\n");
 743                 return ret;
 744         }
 745
 746         dev_set_drvdata(dev, es8328);
 747
 748         return snd_soc_register_codec(dev,
 749                         &es8328_codec_driver, &es8328_dai, 1);
 750 }
 751 EXPORT_SYMBOL_GPL(es8328_probe);
 752
 753 MODULE_DESCRIPTION("ASoC ES8328 driver");
 754 MODULE_AUTHOR("Sean Cross <xobs@kosagi.com>");
 755 MODULE_LICENSE("GPL");