sound/soc/codecs/ak4458.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 //
   3 // Audio driver for AK4458 DAC
   4 //
   5 // Copyright (C) 2016 Asahi Kasei Microdevices Corporation
   6 // Copyright 2018 NXP
   7
   8 #include <linux/delay.h>
   9 #include <linux/gpio/consumer.h>
  10 #include <linux/i2c.h>
  11 #include <linux/module.h>
  12 #include <linux/of.h>
  13 #include <linux/pm_runtime.h>
  14 #include <linux/regulator/consumer.h>
  15 #include <linux/reset.h>
  16 #include <linux/slab.h>
  17 #include <sound/initval.h>
  18 #include <sound/pcm_params.h>
  19 #include <sound/soc.h>
  20 #include <sound/soc-dapm.h>
  21 #include <sound/tlv.h>
  22
  23 #include "ak4458.h"
  24
  25 #define AK4458_NUM_SUPPLIES 2
  26 static const char *ak4458_supply_names[AK4458_NUM_SUPPLIES] = {
  27         "DVDD",
  28         "AVDD",
  29 };
  30
  31 enum ak4458_type {
  32         AK4458 = 0,
  33         AK4497 = 1,
  34 };
  35
  36 struct ak4458_drvdata {
  37         struct snd_soc_dai_driver *dai_drv;
  38         const struct snd_soc_component_driver *comp_drv;
  39         enum ak4458_type type;
  40 };
  41
  42 /* AK4458 Codec Private Data */
  43 struct ak4458_priv {
  44         struct regulator_bulk_data supplies[AK4458_NUM_SUPPLIES];
  45         const struct ak4458_drvdata *drvdata;
  46         struct device *dev;
  47         struct regmap *regmap;
  48         struct reset_control *reset;
  49         struct gpio_desc *mute_gpiod;
  50         int digfil;     /* SSLOW, SD, SLOW bits */
  51         int fs;         /* sampling rate */
  52         int fmt;
  53         int slots;
  54         int slot_width;
  55         u32 dsd_path;    /* For ak4497 */
  56 };
  57
  58 static const struct reg_default ak4458_reg_defaults[] = {
  59         { 0x00, 0x0C }, /*      0x00    AK4458_00_CONTROL1      */
  60         { 0x01, 0x22 }, /*      0x01    AK4458_01_CONTROL2      */
  61         { 0x02, 0x00 }, /*      0x02    AK4458_02_CONTROL3      */
  62         { 0x03, 0xFF }, /*      0x03    AK4458_03_LCHATT        */
  63         { 0x04, 0xFF }, /*      0x04    AK4458_04_RCHATT        */
  64         { 0x05, 0x00 }, /*      0x05    AK4458_05_CONTROL4      */
  65         { 0x06, 0x00 }, /*      0x06    AK4458_06_DSD1          */
  66         { 0x07, 0x03 }, /*      0x07    AK4458_07_CONTROL5      */
  67         { 0x08, 0x00 }, /*      0x08    AK4458_08_SOUND_CONTROL */
  68         { 0x09, 0x00 }, /*      0x09    AK4458_09_DSD2          */
  69         { 0x0A, 0x0D }, /*      0x0A    AK4458_0A_CONTROL6      */
  70         { 0x0B, 0x0C }, /*      0x0B    AK4458_0B_CONTROL7      */
  71         { 0x0C, 0x00 }, /*      0x0C    AK4458_0C_CONTROL8      */
  72         { 0x0D, 0x00 }, /*      0x0D    AK4458_0D_CONTROL9      */
  73         { 0x0E, 0x50 }, /*      0x0E    AK4458_0E_CONTROL10     */
  74         { 0x0F, 0xFF }, /*      0x0F    AK4458_0F_L2CHATT       */
  75         { 0x10, 0xFF }, /*      0x10    AK4458_10_R2CHATT       */
  76         { 0x11, 0xFF }, /*      0x11    AK4458_11_L3CHATT       */
  77         { 0x12, 0xFF }, /*      0x12    AK4458_12_R3CHATT       */
  78         { 0x13, 0xFF }, /*      0x13    AK4458_13_L4CHATT       */
  79         { 0x14, 0xFF }, /*      0x14    AK4458_14_R4CHATT       */
  80 };
  81
  82 /*
  83  * Volume control:
  84  * from -127 to 0 dB in 0.5 dB steps (mute instead of -127.5 dB)
  85  */
  86 static DECLARE_TLV_DB_SCALE(dac_tlv, -12750, 50, 1);
  87
  88 /*
  89  * DEM1 bit DEM0 bit Mode
  90  * 0 0 44.1kHz
  91  * 0 1 OFF (default)
  92  * 1 0 48kHz
  93  * 1 1 32kHz
  94  */
  95 static const char * const ak4458_dem_select_texts[] = {
  96         "44.1kHz", "OFF", "48kHz", "32kHz"
  97 };
  98
  99 /*
 100  * SSLOW, SD, SLOW bits Digital Filter Setting
 101  * 0, 0, 0 : Sharp Roll-Off Filter
 102  * 0, 0, 1 : Slow Roll-Off Filter
 103  * 0, 1, 0 : Short delay Sharp Roll-Off Filter
 104  * 0, 1, 1 : Short delay Slow Roll-Off Filter
 105  * 1, *, * : Super Slow Roll-Off Filter
 106  */
 107 static const char * const ak4458_digfil_select_texts[] = {
 108         "Sharp Roll-Off Filter",
 109         "Slow Roll-Off Filter",
 110         "Short delay Sharp Roll-Off Filter",
 111         "Short delay Slow Roll-Off Filter",
 112         "Super Slow Roll-Off Filter"
 113 };
 114
 115 /*
 116  * DZFB: Inverting Enable of DZF
 117  * 0: DZF goes H at Zero Detection
 118  * 1: DZF goes L at Zero Detection
 119  */
 120 static const char * const ak4458_dzfb_select_texts[] = {"H", "L"};
 121
 122 /*
 123  * SC1-0 bits: Sound Mode Setting
 124  * 0 0 : Sound Mode 0
 125  * 0 1 : Sound Mode 1
 126  * 1 0 : Sound Mode 2
 127  * 1 1 : Reserved
 128  */
 129 static const char * const ak4458_sc_select_texts[] = {
 130         "Sound Mode 0", "Sound Mode 1", "Sound Mode 2"
 131 };
 132
 133 /* FIR2-0 bits: FIR Filter Mode Setting */
 134 static const char * const ak4458_fir_select_texts[] = {
 135         "Mode 0", "Mode 1", "Mode 2", "Mode 3",
 136         "Mode 4", "Mode 5", "Mode 6", "Mode 7",
 137 };
 138
 139 /* ATS1-0 bits Attenuation Speed */
 140 static const char * const ak4458_ats_select_texts[] = {
 141         "4080/fs", "2040/fs", "510/fs", "255/fs",
 142 };
 143
 144 /* DIF2 bit Audio Interface Format Setting(BICK fs) */
 145 static const char * const ak4458_dif_select_texts[] = {"32fs,48fs", "64fs",};
 146
 147 static const struct soc_enum ak4458_dac1_dem_enum =
 148         SOC_ENUM_SINGLE(AK4458_01_CONTROL2, 1,
 149                         ARRAY_SIZE(ak4458_dem_select_texts),
 150                         ak4458_dem_select_texts);
 151 static const struct soc_enum ak4458_dac2_dem_enum =
 152         SOC_ENUM_SINGLE(AK4458_0A_CONTROL6, 0,
 153                         ARRAY_SIZE(ak4458_dem_select_texts),
 154                         ak4458_dem_select_texts);
 155 static const struct soc_enum ak4458_dac3_dem_enum =
 156         SOC_ENUM_SINGLE(AK4458_0E_CONTROL10, 4,
 157                         ARRAY_SIZE(ak4458_dem_select_texts),
 158                         ak4458_dem_select_texts);
 159 static const struct soc_enum ak4458_dac4_dem_enum =
 160         SOC_ENUM_SINGLE(AK4458_0E_CONTROL10, 6,
 161                         ARRAY_SIZE(ak4458_dem_select_texts),
 162                         ak4458_dem_select_texts);
 163 static const struct soc_enum ak4458_digfil_enum =
 164         SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(ak4458_digfil_select_texts),
 165                             ak4458_digfil_select_texts);
 166 static const struct soc_enum ak4458_dzfb_enum =
 167         SOC_ENUM_SINGLE(AK4458_02_CONTROL3, 2,
 168                         ARRAY_SIZE(ak4458_dzfb_select_texts),
 169                         ak4458_dzfb_select_texts);
 170 static const struct soc_enum ak4458_sm_enum =
 171         SOC_ENUM_SINGLE(AK4458_08_SOUND_CONTROL, 0,
 172                         ARRAY_SIZE(ak4458_sc_select_texts),
 173                         ak4458_sc_select_texts);
 174 static const struct soc_enum ak4458_fir_enum =
 175         SOC_ENUM_SINGLE(AK4458_0C_CONTROL8, 0,
 176                         ARRAY_SIZE(ak4458_fir_select_texts),
 177                         ak4458_fir_select_texts);
 178 static const struct soc_enum ak4458_ats_enum =
 179         SOC_ENUM_SINGLE(AK4458_0B_CONTROL7, 6,
 180                         ARRAY_SIZE(ak4458_ats_select_texts),
 181                         ak4458_ats_select_texts);
 182 static const struct soc_enum ak4458_dif_enum =
 183         SOC_ENUM_SINGLE(AK4458_00_CONTROL1, 3,
 184                         ARRAY_SIZE(ak4458_dif_select_texts),
 185                         ak4458_dif_select_texts);
 186
 187 static int get_digfil(struct snd_kcontrol *kcontrol,
 188                       struct snd_ctl_elem_value *ucontrol)
 189 {
 190         struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol);
 191         struct ak4458_priv *ak4458 = snd_soc_component_get_drvdata(component);
 192
 193         ucontrol->value.enumerated.item[0] = ak4458->digfil;
 194
 195         return 0;
 196 }
 197
 198 static int set_digfil(struct snd_kcontrol *kcontrol,
 199                       struct snd_ctl_elem_value *ucontrol)
 200 {
 201         struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol);
 202         struct ak4458_priv *ak4458 = snd_soc_component_get_drvdata(component);
 203         int num;
 204
 205         num = ucontrol->value.enumerated.item[0];
 206         if (num > 4)
 207                 return -EINVAL;
 208
 209         ak4458->digfil = num;
 210
 211         /* write SD bit */
 212         snd_soc_component_update_bits(component, AK4458_01_CONTROL2,
 213                             AK4458_SD_MASK,
 214                             ((ak4458->digfil & 0x02) << 4));
 215
 216         /* write SLOW bit */
 217         snd_soc_component_update_bits(component, AK4458_02_CONTROL3,
 218                             AK4458_SLOW_MASK,
 219                             (ak4458->digfil & 0x01));
 220
 221         /* write SSLOW bit */
 222         snd_soc_component_update_bits(component, AK4458_05_CONTROL4,
 223                             AK4458_SSLOW_MASK,
 224                             ((ak4458->digfil & 0x04) >> 2));
 225
 226         return 0;
 227 }
 228
 229 static const struct snd_kcontrol_new ak4458_snd_controls[] = {
 230         SOC_DOUBLE_R_TLV("DAC1 Playback Volume", AK4458_03_LCHATT,
 231                          AK4458_04_RCHATT, 0, 0xFF, 0, dac_tlv),
 232         SOC_DOUBLE_R_TLV("DAC2 Playback Volume", AK4458_0F_L2CHATT,
 233                          AK4458_10_R2CHATT, 0, 0xFF, 0, dac_tlv),
 234         SOC_DOUBLE_R_TLV("DAC3 Playback Volume", AK4458_11_L3CHATT,
 235                          AK4458_12_R3CHATT, 0, 0xFF, 0, dac_tlv),
 236         SOC_DOUBLE_R_TLV("DAC4 Playback Volume", AK4458_13_L4CHATT,
 237                          AK4458_14_R4CHATT, 0, 0xFF, 0, dac_tlv),
 238         SOC_ENUM("AK4458 De-emphasis Response DAC1", ak4458_dac1_dem_enum),
 239         SOC_ENUM("AK4458 De-emphasis Response DAC2", ak4458_dac2_dem_enum),
 240         SOC_ENUM("AK4458 De-emphasis Response DAC3", ak4458_dac3_dem_enum),
 241         SOC_ENUM("AK4458 De-emphasis Response DAC4", ak4458_dac4_dem_enum),
 242         SOC_ENUM_EXT("AK4458 Digital Filter Setting", ak4458_digfil_enum,
 243                      get_digfil, set_digfil),
 244         SOC_ENUM("AK4458 Inverting Enable of DZFB", ak4458_dzfb_enum),
 245         SOC_ENUM("AK4458 Sound Mode", ak4458_sm_enum),
 246         SOC_ENUM("AK4458 FIR Filter Mode Setting", ak4458_fir_enum),
 247         SOC_ENUM("AK4458 Attenuation transition Time Setting",
 248                  ak4458_ats_enum),
 249         SOC_ENUM("AK4458 BICK fs Setting", ak4458_dif_enum),
 250 };
 251
 252 /* ak4458 dapm widgets */
 253 static const struct snd_soc_dapm_widget ak4458_dapm_widgets[] = {
 254         SND_SOC_DAPM_DAC("AK4458 DAC1", NULL, AK4458_0A_CONTROL6, 2, 0),/*pw*/
 255         SND_SOC_DAPM_AIF_IN("AK4458 SDTI", "Playback", 0, SND_SOC_NOPM, 0, 0),
 256         SND_SOC_DAPM_OUTPUT("AK4458 AOUTA"),
 257
 258         SND_SOC_DAPM_DAC("AK4458 DAC2", NULL, AK4458_0A_CONTROL6, 3, 0),/*pw*/
 259         SND_SOC_DAPM_OUTPUT("AK4458 AOUTB"),
 260
 261         SND_SOC_DAPM_DAC("AK4458 DAC3", NULL, AK4458_0B_CONTROL7, 2, 0),/*pw*/
 262         SND_SOC_DAPM_OUTPUT("AK4458 AOUTC"),
 263
 264         SND_SOC_DAPM_DAC("AK4458 DAC4", NULL, AK4458_0B_CONTROL7, 3, 0),/*pw*/
 265         SND_SOC_DAPM_OUTPUT("AK4458 AOUTD"),
 266 };
 267
 268 static const struct snd_soc_dapm_route ak4458_intercon[] = {
 269         {"AK4458 DAC1",         NULL,   "AK4458 SDTI"},
 270         {"AK4458 AOUTA",        NULL,   "AK4458 DAC1"},
 271
 272         {"AK4458 DAC2",         NULL,   "AK4458 SDTI"},
 273         {"AK4458 AOUTB",        NULL,   "AK4458 DAC2"},
 274
 275         {"AK4458 DAC3",         NULL,   "AK4458 SDTI"},
 276         {"AK4458 AOUTC",        NULL,   "AK4458 DAC3"},
 277
 278         {"AK4458 DAC4",         NULL,   "AK4458 SDTI"},
 279         {"AK4458 AOUTD",        NULL,   "AK4458 DAC4"},
 280 };
 281
 282 /* ak4497 controls */
 283 static const struct snd_kcontrol_new ak4497_snd_controls[] = {
 284         SOC_DOUBLE_R_TLV("DAC Playback Volume", AK4458_03_LCHATT,
 285                          AK4458_04_RCHATT, 0, 0xFF, 0, dac_tlv),
 286         SOC_ENUM("AK4497 De-emphasis Response DAC", ak4458_dac1_dem_enum),
 287         SOC_ENUM_EXT("AK4497 Digital Filter Setting", ak4458_digfil_enum,
 288                      get_digfil, set_digfil),
 289         SOC_ENUM("AK4497 Inverting Enable of DZFB", ak4458_dzfb_enum),
 290         SOC_ENUM("AK4497 Sound Mode", ak4458_sm_enum),
 291         SOC_ENUM("AK4497 Attenuation transition Time Setting",
 292                  ak4458_ats_enum),
 293 };
 294
 295 /* ak4497 dapm widgets */
 296 static const struct snd_soc_dapm_widget ak4497_dapm_widgets[] = {
 297         SND_SOC_DAPM_DAC("AK4497 DAC", NULL, AK4458_0A_CONTROL6, 2, 0),
 298         SND_SOC_DAPM_AIF_IN("AK4497 SDTI", "Playback", 0, SND_SOC_NOPM, 0, 0),
 299         SND_SOC_DAPM_OUTPUT("AK4497 AOUT"),
 300 };
 301
 302 /* ak4497 dapm routes */
 303 static const struct snd_soc_dapm_route ak4497_intercon[] = {
 304         {"AK4497 DAC",          NULL,   "AK4497 SDTI"},
 305         {"AK4497 AOUT",         NULL,   "AK4497 DAC"},
 306
 307 };
 308
 309 static int ak4458_get_tdm_mode(struct ak4458_priv *ak4458)
 310 {
 311         switch (ak4458->slots * ak4458->slot_width) {
 312         case 128:
 313                 return 1;
 314         case 256:
 315                 return 2;
 316         case 512:
 317                 return 3;
 318         default:
 319                 return 0;
 320         }
 321 }
 322
 323 static int ak4458_rstn_control(struct snd_soc_component *component, int bit)
 324 {
 325         int ret;
 326
 327         if (bit)
 328                 ret = snd_soc_component_update_bits(component,
 329                                           AK4458_00_CONTROL1,
 330                                           AK4458_RSTN_MASK,
 331                                           0x1);
 332         else
 333                 ret = snd_soc_component_update_bits(component,
 334                                           AK4458_00_CONTROL1,
 335                                           AK4458_RSTN_MASK,
 336                                           0x0);
 337         if (ret < 0)
 338                 return ret;
 339
 340         return 0;
 341 }
 342
 343 static int ak4458_hw_params(struct snd_pcm_substream *substream,
 344                             struct snd_pcm_hw_params *params,
 345                             struct snd_soc_dai *dai)
 346 {
 347         struct snd_soc_component *component = dai->component;
 348         struct ak4458_priv *ak4458 = snd_soc_component_get_drvdata(component);
 349         int pcm_width = max(params_physical_width(params), ak4458->slot_width);
 350         u8 format, dsdsel0, dsdsel1, dchn;
 351         int nfs1, dsd_bclk, ret, channels, channels_max;
 352
 353         nfs1 = params_rate(params);
 354         ak4458->fs = nfs1;
 355
 356         /* calculate bit clock */
 357         channels = params_channels(params);
 358         channels_max = dai->driver->playback.channels_max;
 359
 360         switch (params_format(params)) {
 361         case SNDRV_PCM_FORMAT_DSD_U8:
 362         case SNDRV_PCM_FORMAT_DSD_U16_LE:
 363         case SNDRV_PCM_FORMAT_DSD_U16_BE:
 364         case SNDRV_PCM_FORMAT_DSD_U32_LE:
 365         case SNDRV_PCM_FORMAT_DSD_U32_BE:
 366                 dsd_bclk = nfs1 * params_physical_width(params);
 367                 switch (dsd_bclk) {
 368                 case 2822400:
 369                         dsdsel0 = 0;
 370                         dsdsel1 = 0;
 371                         break;
 372                 case 5644800:
 373                         dsdsel0 = 1;
 374                         dsdsel1 = 0;
 375                         break;
 376                 case 11289600:
 377                         dsdsel0 = 0;
 378                         dsdsel1 = 1;
 379                         break;
 380                 case 22579200:
 381                         if (ak4458->drvdata->type == AK4497) {
 382                                 dsdsel0 = 1;
 383                                 dsdsel1 = 1;
 384                         } else {
 385                                 dev_err(dai->dev, "DSD512 not supported.\n");
 386                                 return -EINVAL;
 387                         }
 388                         break;
 389                 default:
 390                         dev_err(dai->dev, "Unsupported dsd bclk.\n");
 391                         return -EINVAL;
 392                 }
 393
 394                 snd_soc_component_update_bits(component, AK4458_06_DSD1,
 395                                               AK4458_DSDSEL_MASK, dsdsel0);
 396                 snd_soc_component_update_bits(component, AK4458_09_DSD2,
 397                                               AK4458_DSDSEL_MASK, dsdsel1);
 398                 break;
 399         }
 400
 401         /* Master Clock Frequency Auto Setting Mode Enable */
 402         snd_soc_component_update_bits(component, AK4458_00_CONTROL1, 0x80, 0x80);
 403
 404         switch (pcm_width) {
 405         case 16:
 406                 if (ak4458->fmt == SND_SOC_DAIFMT_I2S)
 407                         format = AK4458_DIF_24BIT_I2S;
 408                 else
 409                         format = AK4458_DIF_16BIT_LSB;
 410                 break;
 411         case 32:
 412                 switch (ak4458->fmt) {
 413                 case SND_SOC_DAIFMT_I2S:
 414                         format = AK4458_DIF_32BIT_I2S;
 415                         break;
 416                 case SND_SOC_DAIFMT_LEFT_J:
 417                         format = AK4458_DIF_32BIT_MSB;
 418                         break;
 419                 case SND_SOC_DAIFMT_RIGHT_J:
 420                         format = AK4458_DIF_32BIT_LSB;
 421                         break;
 422                 case SND_SOC_DAIFMT_DSP_B:
 423                         format = AK4458_DIF_32BIT_MSB;
 424                         break;
 425                 case SND_SOC_DAIFMT_PDM:
 426                         format = AK4458_DIF_32BIT_MSB;
 427                         break;
 428                 default:
 429                         return -EINVAL;
 430                 }
 431                 break;
 432         default:
 433                 return -EINVAL;
 434         }
 435
 436         snd_soc_component_update_bits(component, AK4458_00_CONTROL1,
 437                             AK4458_DIF_MASK, format);
 438
 439         /*
 440          * Enable/disable Daisy Chain if in TDM mode and the number of played
 441          * channels is bigger than the maximum supported number of channels
 442          */
 443         dchn = ak4458_get_tdm_mode(ak4458) &&
 444                 (ak4458->fmt == SND_SOC_DAIFMT_DSP_B) &&
 445                 (channels > channels_max) ? AK4458_DCHAIN_MASK : 0;
 446
 447         snd_soc_component_update_bits(component, AK4458_0B_CONTROL7,
 448                                       AK4458_DCHAIN_MASK, dchn);
 449
 450         if (ak4458->drvdata->type == AK4497) {
 451                 ret = snd_soc_component_update_bits(component, AK4458_09_DSD2,
 452                                                     0x4, (ak4458->dsd_path << 2));
 453                 if (ret < 0)
 454                         return ret;
 455         }
 456
 457         ret = ak4458_rstn_control(component, 0);
 458         if (ret)
 459                 return ret;
 460
 461         ret = ak4458_rstn_control(component, 1);
 462         if (ret)
 463                 return ret;
 464
 465         return 0;
 466 }
 467
 468 static int ak4458_set_dai_fmt(struct snd_soc_dai *dai, unsigned int fmt)
 469 {
 470         struct snd_soc_component *component = dai->component;
 471         struct ak4458_priv *ak4458 = snd_soc_component_get_drvdata(component);
 472         int ret;
 473
 474         switch (fmt & SND_SOC_DAIFMT_CLOCK_PROVIDER_MASK) {
 475         case SND_SOC_DAIFMT_CBC_CFC: /* Consumer Mode */
 476                 break;
 477         case SND_SOC_DAIFMT_CBP_CFP: /* Provider Mode is not supported */
 478         case SND_SOC_DAIFMT_CBC_CFP:
 479         case SND_SOC_DAIFMT_CBP_CFC:
 480         default:
 481                 dev_err(component->dev, "Clock provider mode unsupported\n");
 482                 return -EINVAL;
 483         }
 484
 485         switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
 486         case SND_SOC_DAIFMT_I2S:
 487         case SND_SOC_DAIFMT_LEFT_J:
 488         case SND_SOC_DAIFMT_RIGHT_J:
 489         case SND_SOC_DAIFMT_DSP_B:
 490         case SND_SOC_DAIFMT_PDM:
 491                 ak4458->fmt = fmt & SND_SOC_DAIFMT_FORMAT_MASK;
 492                 break;
 493         default:
 494                 dev_err(component->dev, "Audio format 0x%02X unsupported\n",
 495                         fmt & SND_SOC_DAIFMT_FORMAT_MASK);
 496                 return -EINVAL;
 497         }
 498
 499         /* DSD mode */
 500         snd_soc_component_update_bits(component, AK4458_02_CONTROL3,
 501                                       AK4458_DP_MASK,
 502                                       ak4458->fmt == SND_SOC_DAIFMT_PDM ?
 503                                       AK4458_DP_MASK : 0);
 504
 505         ret = ak4458_rstn_control(component, 0);
 506         if (ret)
 507                 return ret;
 508
 509         ret = ak4458_rstn_control(component, 1);
 510         if (ret)
 511                 return ret;
 512
 513         return 0;
 514 }
 515
 516 static const int att_speed[] = { 4080, 2040, 510, 255 };
 517
 518 static int ak4458_set_dai_mute(struct snd_soc_dai *dai, int mute, int direction)
 519 {
 520         struct snd_soc_component *component = dai->component;
 521         struct ak4458_priv *ak4458 = snd_soc_component_get_drvdata(component);
 522         int nfs, ndt, reg;
 523         int ats;
 524
 525         nfs = ak4458->fs;
 526
 527         reg = snd_soc_component_read(component, AK4458_0B_CONTROL7);
 528         ats = (reg & AK4458_ATS_MASK) >> AK4458_ATS_SHIFT;
 529
 530         ndt = att_speed[ats] / (nfs / 1000);
 531
 532         if (mute) {
 533                 snd_soc_component_update_bits(component, AK4458_01_CONTROL2,  0x01, 1);
 534                 mdelay(ndt);
 535                 if (ak4458->mute_gpiod)
 536                         gpiod_set_value_cansleep(ak4458->mute_gpiod, 1);
 537         } else {
 538                 if (ak4458->mute_gpiod)
 539                         gpiod_set_value_cansleep(ak4458->mute_gpiod, 0);
 540                 snd_soc_component_update_bits(component, AK4458_01_CONTROL2, 0x01, 0);
 541                 mdelay(ndt);
 542         }
 543
 544         return 0;
 545 }
 546
 547 static int ak4458_set_tdm_slot(struct snd_soc_dai *dai, unsigned int tx_mask,
 548                                unsigned int rx_mask, int slots, int slot_width)
 549 {
 550         struct snd_soc_component *component = dai->component;
 551         struct ak4458_priv *ak4458 = snd_soc_component_get_drvdata(component);
 552         int mode;
 553
 554         ak4458->slots = slots;
 555         ak4458->slot_width = slot_width;
 556
 557         mode = ak4458_get_tdm_mode(ak4458) << AK4458_MODE_SHIFT;
 558
 559         snd_soc_component_update_bits(component, AK4458_0A_CONTROL6,
 560                             AK4458_MODE_MASK,
 561                             mode);
 562
 563         return 0;
 564 }
 565
 566 #define AK4458_FORMATS  (SNDRV_PCM_FMTBIT_S16_LE |\
 567                          SNDRV_PCM_FMTBIT_S24_LE |\
 568                          SNDRV_PCM_FMTBIT_S32_LE |\
 569                          SNDRV_PCM_FMTBIT_DSD_U8 |\
 570                          SNDRV_PCM_FMTBIT_DSD_U16_LE |\
 571                          SNDRV_PCM_FMTBIT_DSD_U32_LE)
 572
 573 static const unsigned int ak4458_rates[] = {
 574         8000, 11025,  16000, 22050,
 575         32000, 44100, 48000, 88200,
 576         96000, 176400, 192000, 352800,
 577         384000, 705600, 768000, 1411200,
 578         2822400,
 579 };
 580
 581 static const struct snd_pcm_hw_constraint_list ak4458_rate_constraints = {
 582         .count = ARRAY_SIZE(ak4458_rates),
 583         .list = ak4458_rates,
 584 };
 585
 586 static int ak4458_startup(struct snd_pcm_substream *substream,
 587                           struct snd_soc_dai *dai)
 588 {
 589         int ret;
 590
 591         ret = snd_pcm_hw_constraint_list(substream->runtime, 0,
 592                                          SNDRV_PCM_HW_PARAM_RATE,
 593                                          &ak4458_rate_constraints);
 594
 595         return ret;
 596 }
 597
 598 static const struct snd_soc_dai_ops ak4458_dai_ops = {
 599         .startup        = ak4458_startup,
 600         .hw_params      = ak4458_hw_params,
 601         .set_fmt        = ak4458_set_dai_fmt,
 602         .mute_stream    = ak4458_set_dai_mute,
 603         .set_tdm_slot   = ak4458_set_tdm_slot,
 604         .no_capture_mute = 1,
 605 };
 606
 607 static struct snd_soc_dai_driver ak4458_dai = {
 608         .name = "ak4458-aif",
 609         .playback = {
 610                 .stream_name = "Playback",
 611                 .channels_min = 1,
 612                 .channels_max = 8,
 613                 .rates = SNDRV_PCM_RATE_KNOT,
 614                 .formats = AK4458_FORMATS,
 615         },
 616         .ops = &ak4458_dai_ops,
 617 };
 618
 619 static struct snd_soc_dai_driver ak4497_dai = {
 620         .name = "ak4497-aif",
 621         .playback = {
 622                 .stream_name = "Playback",
 623                 .channels_min = 1,
 624                 .channels_max = 2,
 625                 .rates = SNDRV_PCM_RATE_KNOT,
 626                 .formats = AK4458_FORMATS,
 627         },
 628         .ops = &ak4458_dai_ops,
 629 };
 630
 631 static void ak4458_reset(struct ak4458_priv *ak4458, bool active)
 632 {
 633         if (!IS_ERR_OR_NULL(ak4458->reset)) {
 634                 if (active)
 635                         reset_control_assert(ak4458->reset);
 636                 else
 637                         reset_control_deassert(ak4458->reset);
 638                 usleep_range(1000, 2000);
 639         }
 640 }
 641
 642 #ifdef CONFIG_PM
 643 static int __maybe_unused ak4458_runtime_suspend(struct device *dev)
 644 {
 645         struct ak4458_priv *ak4458 = dev_get_drvdata(dev);
 646
 647         regcache_cache_only(ak4458->regmap, true);
 648
 649         ak4458_reset(ak4458, true);
 650
 651         if (ak4458->mute_gpiod)
 652                 gpiod_set_value_cansleep(ak4458->mute_gpiod, 0);
 653
 654         regulator_bulk_disable(ARRAY_SIZE(ak4458->supplies),
 655                                ak4458->supplies);
 656         return 0;
 657 }
 658
 659 static int __maybe_unused ak4458_runtime_resume(struct device *dev)
 660 {
 661         struct ak4458_priv *ak4458 = dev_get_drvdata(dev);
 662         int ret;
 663
 664         ret = regulator_bulk_enable(ARRAY_SIZE(ak4458->supplies),
 665                                     ak4458->supplies);
 666         if (ret != 0) {
 667                 dev_err(ak4458->dev, "Failed to enable supplies: %d\n", ret);
 668                 return ret;
 669         }
 670
 671         if (ak4458->mute_gpiod)
 672                 gpiod_set_value_cansleep(ak4458->mute_gpiod, 1);
 673
 674         ak4458_reset(ak4458, false);
 675
 676         regcache_cache_only(ak4458->regmap, false);
 677         regcache_mark_dirty(ak4458->regmap);
 678
 679         return regcache_sync(ak4458->regmap);
 680 }
 681 #endif /* CONFIG_PM */
 682
 683 static const struct snd_soc_component_driver soc_codec_dev_ak4458 = {
 684         .controls               = ak4458_snd_controls,
 685         .num_controls           = ARRAY_SIZE(ak4458_snd_controls),
 686         .dapm_widgets           = ak4458_dapm_widgets,
 687         .num_dapm_widgets       = ARRAY_SIZE(ak4458_dapm_widgets),
 688         .dapm_routes            = ak4458_intercon,
 689         .num_dapm_routes        = ARRAY_SIZE(ak4458_intercon),
 690         .idle_bias_on           = 1,
 691         .use_pmdown_time        = 1,
 692         .endianness             = 1,
 693 };
 694
 695 static const struct snd_soc_component_driver soc_codec_dev_ak4497 = {
 696         .controls               = ak4497_snd_controls,
 697         .num_controls           = ARRAY_SIZE(ak4497_snd_controls),
 698         .dapm_widgets           = ak4497_dapm_widgets,
 699         .num_dapm_widgets       = ARRAY_SIZE(ak4497_dapm_widgets),
 700         .dapm_routes            = ak4497_intercon,
 701         .num_dapm_routes        = ARRAY_SIZE(ak4497_intercon),
 702         .idle_bias_on           = 1,
 703         .use_pmdown_time        = 1,
 704         .endianness             = 1,
 705 };
 706
 707 static const struct regmap_config ak4458_regmap = {
 708         .reg_bits = 8,
 709         .val_bits = 8,
 710
 711         .max_register = AK4458_14_R4CHATT,
 712         .reg_defaults = ak4458_reg_defaults,
 713         .num_reg_defaults = ARRAY_SIZE(ak4458_reg_defaults),
 714         .cache_type = REGCACHE_RBTREE,
 715 };
 716
 717 static const struct ak4458_drvdata ak4458_drvdata = {
 718         .dai_drv = &ak4458_dai,
 719         .comp_drv = &soc_codec_dev_ak4458,
 720         .type = AK4458,
 721 };
 722
 723 static const struct ak4458_drvdata ak4497_drvdata = {
 724         .dai_drv = &ak4497_dai,
 725         .comp_drv = &soc_codec_dev_ak4497,
 726         .type = AK4497,
 727 };
 728
 729 static const struct dev_pm_ops ak4458_pm = {
 730         SET_RUNTIME_PM_OPS(ak4458_runtime_suspend, ak4458_runtime_resume, NULL)
 731         SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend,
 732                                 pm_runtime_force_resume)
 733 };
 734
 735 static int ak4458_i2c_probe(struct i2c_client *i2c)
 736 {
 737         struct ak4458_priv *ak4458;
 738         int ret, i;
 739
 740         ak4458 = devm_kzalloc(&i2c->dev, sizeof(*ak4458), GFP_KERNEL);
 741         if (!ak4458)
 742                 return -ENOMEM;
 743
 744         ak4458->regmap = devm_regmap_init_i2c(i2c, &ak4458_regmap);
 745         if (IS_ERR(ak4458->regmap))
 746                 return PTR_ERR(ak4458->regmap);
 747
 748         i2c_set_clientdata(i2c, ak4458);
 749         ak4458->dev = &i2c->dev;
 750
 751         ak4458->drvdata = of_device_get_match_data(&i2c->dev);
 752
 753         ak4458->reset = devm_reset_control_get_optional_shared(ak4458->dev, NULL);
 754         if (IS_ERR(ak4458->reset))
 755                 return PTR_ERR(ak4458->reset);
 756
 757         ak4458->mute_gpiod = devm_gpiod_get_optional(ak4458->dev, "mute",
 758                                                      GPIOD_OUT_LOW);
 759         if (IS_ERR(ak4458->mute_gpiod))
 760                 return PTR_ERR(ak4458->mute_gpiod);
 761
 762         /* Optional property for ak4497 */
 763         of_property_read_u32(i2c->dev.of_node, "dsd-path", &ak4458->dsd_path);
 764
 765         for (i = 0; i < ARRAY_SIZE(ak4458->supplies); i++)
 766                 ak4458->supplies[i].supply = ak4458_supply_names[i];
 767
 768         ret = devm_regulator_bulk_get(ak4458->dev, ARRAY_SIZE(ak4458->supplies),
 769                                       ak4458->supplies);
 770         if (ret != 0) {
 771                 dev_err(ak4458->dev, "Failed to request supplies: %d\n", ret);
 772                 return ret;
 773         }
 774
 775         ret = devm_snd_soc_register_component(ak4458->dev,
 776                                               ak4458->drvdata->comp_drv,
 777                                               ak4458->drvdata->dai_drv, 1);
 778         if (ret < 0) {
 779                 dev_err(ak4458->dev, "Failed to register CODEC: %d\n", ret);
 780                 return ret;
 781         }
 782
 783         pm_runtime_enable(&i2c->dev);
 784         regcache_cache_only(ak4458->regmap, true);
 785         ak4458_reset(ak4458, false);
 786
 787         return 0;
 788 }
 789
 790 static void ak4458_i2c_remove(struct i2c_client *i2c)
 791 {
 792         struct ak4458_priv *ak4458 = i2c_get_clientdata(i2c);
 793
 794         ak4458_reset(ak4458, true);
 795         pm_runtime_disable(&i2c->dev);
 796 }
 797
 798 static const struct of_device_id ak4458_of_match[] = {
 799         { .compatible = "asahi-kasei,ak4458", .data = &ak4458_drvdata},
 800         { .compatible = "asahi-kasei,ak4497", .data = &ak4497_drvdata},
 801         { },
 802 };
 803 MODULE_DEVICE_TABLE(of, ak4458_of_match);
 804
 805 static struct i2c_driver ak4458_i2c_driver = {
 806         .driver = {
 807                 .name = "ak4458",
 808                 .pm = &ak4458_pm,
 809                 .of_match_table = ak4458_of_match,
 810                 },
 811         .probe = ak4458_i2c_probe,
 812         .remove = ak4458_i2c_remove,
 813 };
 814
 815 module_i2c_driver(ak4458_i2c_driver);
 816
 817 MODULE_AUTHOR("Junichi Wakasugi <wakasugi.jb@om.asahi-kasei.co.jp>");
 818 MODULE_AUTHOR("Mihai Serban <mihai.serban@nxp.com>");
 819 MODULE_DESCRIPTION("ASoC AK4458 DAC driver");
 820 MODULE_LICENSE("GPL v2");