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_device.h>
  13 #include <linux/of_gpio.h>
  14 #include <linux/pm_runtime.h>
  15 #include <linux/regulator/consumer.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 gpio_desc *reset_gpiod;
  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_rstn_control(struct snd_soc_component *component, int bit)
 310 {
 311         int ret;
 312
 313         if (bit)
 314                 ret = snd_soc_component_update_bits(component,
 315                                           AK4458_00_CONTROL1,
 316                                           AK4458_RSTN_MASK,
 317                                           0x1);
 318         else
 319                 ret = snd_soc_component_update_bits(component,
 320                                           AK4458_00_CONTROL1,
 321                                           AK4458_RSTN_MASK,
 322                                           0x0);
 323         if (ret < 0)
 324                 return ret;
 325
 326         return 0;
 327 }
 328
 329 static int ak4458_hw_params(struct snd_pcm_substream *substream,
 330                             struct snd_pcm_hw_params *params,
 331                             struct snd_soc_dai *dai)
 332 {
 333         struct snd_soc_component *component = dai->component;
 334         struct ak4458_priv *ak4458 = snd_soc_component_get_drvdata(component);
 335         int pcm_width = max(params_physical_width(params), ak4458->slot_width);
 336         u8 format, dsdsel0, dsdsel1;
 337         int nfs1, dsd_bclk;
 338
 339         nfs1 = params_rate(params);
 340         ak4458->fs = nfs1;
 341
 342         /* calculate bit clock */
 343         switch (params_format(params)) {
 344         case SNDRV_PCM_FORMAT_DSD_U8:
 345         case SNDRV_PCM_FORMAT_DSD_U16_LE:
 346         case SNDRV_PCM_FORMAT_DSD_U16_BE:
 347         case SNDRV_PCM_FORMAT_DSD_U32_LE:
 348         case SNDRV_PCM_FORMAT_DSD_U32_BE:
 349                 dsd_bclk = nfs1 * params_physical_width(params);
 350                 switch (dsd_bclk) {
 351                 case 2822400:
 352                         dsdsel0 = 0;
 353                         dsdsel1 = 0;
 354                         break;
 355                 case 5644800:
 356                         dsdsel0 = 1;
 357                         dsdsel1 = 0;
 358                         break;
 359                 case 11289600:
 360                         dsdsel0 = 0;
 361                         dsdsel1 = 1;
 362                         break;
 363                 case 22579200:
 364                         if (ak4458->drvdata->type == AK4497) {
 365                                 dsdsel0 = 1;
 366                                 dsdsel1 = 1;
 367                         } else {
 368                                 dev_err(dai->dev, "DSD512 not supported.\n");
 369                                 return -EINVAL;
 370                         }
 371                         break;
 372                 default:
 373                         dev_err(dai->dev, "Unsupported dsd bclk.\n");
 374                         return -EINVAL;
 375                 }
 376
 377                 snd_soc_component_update_bits(component, AK4458_06_DSD1,
 378                                               AK4458_DSDSEL_MASK, dsdsel0);
 379                 snd_soc_component_update_bits(component, AK4458_09_DSD2,
 380                                               AK4458_DSDSEL_MASK, dsdsel1);
 381                 break;
 382         }
 383
 384         /* Master Clock Frequency Auto Setting Mode Enable */
 385         snd_soc_component_update_bits(component, AK4458_00_CONTROL1, 0x80, 0x80);
 386
 387         switch (pcm_width) {
 388         case 16:
 389                 if (ak4458->fmt == SND_SOC_DAIFMT_I2S)
 390                         format = AK4458_DIF_24BIT_I2S;
 391                 else
 392                         format = AK4458_DIF_16BIT_LSB;
 393                 break;
 394         case 32:
 395                 switch (ak4458->fmt) {
 396                 case SND_SOC_DAIFMT_I2S:
 397                         format = AK4458_DIF_32BIT_I2S;
 398                         break;
 399                 case SND_SOC_DAIFMT_LEFT_J:
 400                         format = AK4458_DIF_32BIT_MSB;
 401                         break;
 402                 case SND_SOC_DAIFMT_RIGHT_J:
 403                         format = AK4458_DIF_32BIT_LSB;
 404                         break;
 405                 case SND_SOC_DAIFMT_DSP_B:
 406                         format = AK4458_DIF_32BIT_MSB;
 407                         break;
 408                 case SND_SOC_DAIFMT_PDM:
 409                         format = AK4458_DIF_32BIT_MSB;
 410                         break;
 411                 default:
 412                         return -EINVAL;
 413                 }
 414                 break;
 415         default:
 416                 return -EINVAL;
 417         }
 418
 419         snd_soc_component_update_bits(component, AK4458_00_CONTROL1,
 420                             AK4458_DIF_MASK, format);
 421
 422         ak4458_rstn_control(component, 0);
 423         ak4458_rstn_control(component, 1);
 424
 425         return 0;
 426 }
 427
 428 static int ak4458_set_dai_fmt(struct snd_soc_dai *dai, unsigned int fmt)
 429 {
 430         struct snd_soc_component *component = dai->component;
 431         struct ak4458_priv *ak4458 = snd_soc_component_get_drvdata(component);
 432
 433         switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
 434         case SND_SOC_DAIFMT_CBS_CFS: /* Slave Mode */
 435                 break;
 436         case SND_SOC_DAIFMT_CBM_CFM: /* Master Mode is not supported */
 437         case SND_SOC_DAIFMT_CBS_CFM:
 438         case SND_SOC_DAIFMT_CBM_CFS:
 439         default:
 440                 dev_err(component->dev, "Master mode unsupported\n");
 441                 return -EINVAL;
 442         }
 443
 444         switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
 445         case SND_SOC_DAIFMT_I2S:
 446         case SND_SOC_DAIFMT_LEFT_J:
 447         case SND_SOC_DAIFMT_RIGHT_J:
 448         case SND_SOC_DAIFMT_DSP_B:
 449         case SND_SOC_DAIFMT_PDM:
 450                 ak4458->fmt = fmt & SND_SOC_DAIFMT_FORMAT_MASK;
 451                 break;
 452         default:
 453                 dev_err(component->dev, "Audio format 0x%02X unsupported\n",
 454                         fmt & SND_SOC_DAIFMT_FORMAT_MASK);
 455                 return -EINVAL;
 456         }
 457
 458         /* DSD mode */
 459         snd_soc_component_update_bits(component, AK4458_02_CONTROL3,
 460                                       AK4458_DP_MASK,
 461                                       ak4458->fmt == SND_SOC_DAIFMT_PDM ?
 462                                       AK4458_DP_MASK : 0);
 463
 464         ak4458_rstn_control(component, 0);
 465         ak4458_rstn_control(component, 1);
 466
 467         return 0;
 468 }
 469
 470 static const int att_speed[] = { 4080, 2040, 510, 255 };
 471
 472 static int ak4458_set_dai_mute(struct snd_soc_dai *dai, int mute, int direction)
 473 {
 474         struct snd_soc_component *component = dai->component;
 475         struct ak4458_priv *ak4458 = snd_soc_component_get_drvdata(component);
 476         int nfs, ndt, reg;
 477         int ats;
 478
 479         nfs = ak4458->fs;
 480
 481         reg = snd_soc_component_read(component, AK4458_0B_CONTROL7);
 482         ats = (reg & AK4458_ATS_MASK) >> AK4458_ATS_SHIFT;
 483
 484         ndt = att_speed[ats] / (nfs / 1000);
 485
 486         if (mute) {
 487                 snd_soc_component_update_bits(component, AK4458_01_CONTROL2,  0x01, 1);
 488                 mdelay(ndt);
 489                 if (ak4458->mute_gpiod)
 490                         gpiod_set_value_cansleep(ak4458->mute_gpiod, 1);
 491         } else {
 492                 if (ak4458->mute_gpiod)
 493                         gpiod_set_value_cansleep(ak4458->mute_gpiod, 0);
 494                 snd_soc_component_update_bits(component, AK4458_01_CONTROL2, 0x01, 0);
 495                 mdelay(ndt);
 496         }
 497
 498         return 0;
 499 }
 500
 501 static int ak4458_set_tdm_slot(struct snd_soc_dai *dai, unsigned int tx_mask,
 502                                unsigned int rx_mask, int slots, int slot_width)
 503 {
 504         struct snd_soc_component *component = dai->component;
 505         struct ak4458_priv *ak4458 = snd_soc_component_get_drvdata(component);
 506         int mode;
 507
 508         ak4458->slots = slots;
 509         ak4458->slot_width = slot_width;
 510
 511         switch (slots * slot_width) {
 512         case 128:
 513                 mode = AK4458_MODE_TDM128;
 514                 break;
 515         case 256:
 516                 mode = AK4458_MODE_TDM256;
 517                 break;
 518         case 512:
 519                 mode = AK4458_MODE_TDM512;
 520                 break;
 521         default:
 522                 mode = AK4458_MODE_NORMAL;
 523                 break;
 524         }
 525
 526         snd_soc_component_update_bits(component, AK4458_0A_CONTROL6,
 527                             AK4458_MODE_MASK,
 528                             mode);
 529
 530         return 0;
 531 }
 532
 533 #define AK4458_FORMATS  (SNDRV_PCM_FMTBIT_S16_LE |\
 534                          SNDRV_PCM_FMTBIT_S24_LE |\
 535                          SNDRV_PCM_FMTBIT_S32_LE |\
 536                          SNDRV_PCM_FMTBIT_DSD_U8 |\
 537                          SNDRV_PCM_FMTBIT_DSD_U16_LE |\
 538                          SNDRV_PCM_FMTBIT_DSD_U32_LE)
 539
 540 static const unsigned int ak4458_rates[] = {
 541         8000, 11025,  16000, 22050,
 542         32000, 44100, 48000, 88200,
 543         96000, 176400, 192000, 352800,
 544         384000, 705600, 768000, 1411200,
 545         2822400,
 546 };
 547
 548 static const struct snd_pcm_hw_constraint_list ak4458_rate_constraints = {
 549         .count = ARRAY_SIZE(ak4458_rates),
 550         .list = ak4458_rates,
 551 };
 552
 553 static int ak4458_startup(struct snd_pcm_substream *substream,
 554                           struct snd_soc_dai *dai)
 555 {
 556         int ret;
 557
 558         ret = snd_pcm_hw_constraint_list(substream->runtime, 0,
 559                                          SNDRV_PCM_HW_PARAM_RATE,
 560                                          &ak4458_rate_constraints);
 561
 562         return ret;
 563 }
 564
 565 static const struct snd_soc_dai_ops ak4458_dai_ops = {
 566         .startup        = ak4458_startup,
 567         .hw_params      = ak4458_hw_params,
 568         .set_fmt        = ak4458_set_dai_fmt,
 569         .mute_stream    = ak4458_set_dai_mute,
 570         .set_tdm_slot   = ak4458_set_tdm_slot,
 571         .no_capture_mute = 1,
 572 };
 573
 574 static struct snd_soc_dai_driver ak4458_dai = {
 575         .name = "ak4458-aif",
 576         .playback = {
 577                 .stream_name = "Playback",
 578                 .channels_min = 1,
 579                 .channels_max = 8,
 580                 .rates = SNDRV_PCM_RATE_KNOT,
 581                 .formats = AK4458_FORMATS,
 582         },
 583         .ops = &ak4458_dai_ops,
 584 };
 585
 586 static struct snd_soc_dai_driver ak4497_dai = {
 587         .name = "ak4497-aif",
 588         .playback = {
 589                 .stream_name = "Playback",
 590                 .channels_min = 1,
 591                 .channels_max = 2,
 592                 .rates = SNDRV_PCM_RATE_KNOT,
 593                 .formats = AK4458_FORMATS,
 594         },
 595         .ops = &ak4458_dai_ops,
 596 };
 597
 598 static void ak4458_power_off(struct ak4458_priv *ak4458)
 599 {
 600         if (ak4458->reset_gpiod) {
 601                 gpiod_set_value_cansleep(ak4458->reset_gpiod, 0);
 602                 usleep_range(1000, 2000);
 603         }
 604 }
 605
 606 static void ak4458_power_on(struct ak4458_priv *ak4458)
 607 {
 608         if (ak4458->reset_gpiod) {
 609                 gpiod_set_value_cansleep(ak4458->reset_gpiod, 1);
 610                 usleep_range(1000, 2000);
 611         }
 612 }
 613
 614 static int ak4458_init(struct snd_soc_component *component)
 615 {
 616         struct ak4458_priv *ak4458 = snd_soc_component_get_drvdata(component);
 617         int ret;
 618
 619         /* External Mute ON */
 620         if (ak4458->mute_gpiod)
 621                 gpiod_set_value_cansleep(ak4458->mute_gpiod, 1);
 622
 623         ak4458_power_on(ak4458);
 624
 625         ret = snd_soc_component_update_bits(component, AK4458_00_CONTROL1,
 626                             0x80, 0x80);   /* ACKS bit = 1; 10000000 */
 627         if (ret < 0)
 628                 return ret;
 629
 630         if (ak4458->drvdata->type == AK4497) {
 631                 ret = snd_soc_component_update_bits(component, AK4458_09_DSD2,
 632                                                     0x4, (ak4458->dsd_path << 2));
 633                 if (ret < 0)
 634                         return ret;
 635         }
 636
 637         return ak4458_rstn_control(component, 1);
 638 }
 639
 640 static int ak4458_probe(struct snd_soc_component *component)
 641 {
 642         struct ak4458_priv *ak4458 = snd_soc_component_get_drvdata(component);
 643
 644         ak4458->fs = 48000;
 645
 646         return ak4458_init(component);
 647 }
 648
 649 static void ak4458_remove(struct snd_soc_component *component)
 650 {
 651         struct ak4458_priv *ak4458 = snd_soc_component_get_drvdata(component);
 652
 653         ak4458_power_off(ak4458);
 654 }
 655
 656 #ifdef CONFIG_PM
 657 static int __maybe_unused ak4458_runtime_suspend(struct device *dev)
 658 {
 659         struct ak4458_priv *ak4458 = dev_get_drvdata(dev);
 660
 661         regcache_cache_only(ak4458->regmap, true);
 662
 663         ak4458_power_off(ak4458);
 664
 665         if (ak4458->mute_gpiod)
 666                 gpiod_set_value_cansleep(ak4458->mute_gpiod, 0);
 667
 668         regulator_bulk_disable(ARRAY_SIZE(ak4458->supplies),
 669                                ak4458->supplies);
 670         return 0;
 671 }
 672
 673 static int __maybe_unused ak4458_runtime_resume(struct device *dev)
 674 {
 675         struct ak4458_priv *ak4458 = dev_get_drvdata(dev);
 676         int ret;
 677
 678         ret = regulator_bulk_enable(ARRAY_SIZE(ak4458->supplies),
 679                                     ak4458->supplies);
 680         if (ret != 0) {
 681                 dev_err(ak4458->dev, "Failed to enable supplies: %d\n", ret);
 682                 return ret;
 683         }
 684
 685         if (ak4458->mute_gpiod)
 686                 gpiod_set_value_cansleep(ak4458->mute_gpiod, 1);
 687
 688         ak4458_power_off(ak4458);
 689         ak4458_power_on(ak4458);
 690
 691         regcache_cache_only(ak4458->regmap, false);
 692         regcache_mark_dirty(ak4458->regmap);
 693
 694         return regcache_sync(ak4458->regmap);
 695 }
 696 #endif /* CONFIG_PM */
 697
 698 static const struct snd_soc_component_driver soc_codec_dev_ak4458 = {
 699         .probe                  = ak4458_probe,
 700         .remove                 = ak4458_remove,
 701         .controls               = ak4458_snd_controls,
 702         .num_controls           = ARRAY_SIZE(ak4458_snd_controls),
 703         .dapm_widgets           = ak4458_dapm_widgets,
 704         .num_dapm_widgets       = ARRAY_SIZE(ak4458_dapm_widgets),
 705         .dapm_routes            = ak4458_intercon,
 706         .num_dapm_routes        = ARRAY_SIZE(ak4458_intercon),
 707         .idle_bias_on           = 1,
 708         .use_pmdown_time        = 1,
 709         .endianness             = 1,
 710         .non_legacy_dai_naming  = 1,
 711 };
 712
 713 static const struct snd_soc_component_driver soc_codec_dev_ak4497 = {
 714         .probe                  = ak4458_probe,
 715         .remove                 = ak4458_remove,
 716         .controls               = ak4497_snd_controls,
 717         .num_controls           = ARRAY_SIZE(ak4497_snd_controls),
 718         .dapm_widgets           = ak4497_dapm_widgets,
 719         .num_dapm_widgets       = ARRAY_SIZE(ak4497_dapm_widgets),
 720         .dapm_routes            = ak4497_intercon,
 721         .num_dapm_routes        = ARRAY_SIZE(ak4497_intercon),
 722         .idle_bias_on           = 1,
 723         .use_pmdown_time        = 1,
 724         .endianness             = 1,
 725         .non_legacy_dai_naming  = 1,
 726 };
 727
 728 static const struct regmap_config ak4458_regmap = {
 729         .reg_bits = 8,
 730         .val_bits = 8,
 731
 732         .max_register = AK4458_14_R4CHATT,
 733         .reg_defaults = ak4458_reg_defaults,
 734         .num_reg_defaults = ARRAY_SIZE(ak4458_reg_defaults),
 735         .cache_type = REGCACHE_RBTREE,
 736 };
 737
 738 static const struct ak4458_drvdata ak4458_drvdata = {
 739         .dai_drv = &ak4458_dai,
 740         .comp_drv = &soc_codec_dev_ak4458,
 741         .type = AK4458,
 742 };
 743
 744 static const struct ak4458_drvdata ak4497_drvdata = {
 745         .dai_drv = &ak4497_dai,
 746         .comp_drv = &soc_codec_dev_ak4497,
 747         .type = AK4497,
 748 };
 749
 750 static const struct dev_pm_ops ak4458_pm = {
 751         SET_RUNTIME_PM_OPS(ak4458_runtime_suspend, ak4458_runtime_resume, NULL)
 752         SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend,
 753                                 pm_runtime_force_resume)
 754 };
 755
 756 static int ak4458_i2c_probe(struct i2c_client *i2c)
 757 {
 758         struct ak4458_priv *ak4458;
 759         int ret, i;
 760
 761         ak4458 = devm_kzalloc(&i2c->dev, sizeof(*ak4458), GFP_KERNEL);
 762         if (!ak4458)
 763                 return -ENOMEM;
 764
 765         ak4458->regmap = devm_regmap_init_i2c(i2c, &ak4458_regmap);
 766         if (IS_ERR(ak4458->regmap))
 767                 return PTR_ERR(ak4458->regmap);
 768
 769         i2c_set_clientdata(i2c, ak4458);
 770         ak4458->dev = &i2c->dev;
 771
 772         ak4458->drvdata = of_device_get_match_data(&i2c->dev);
 773
 774         ak4458->reset_gpiod = devm_gpiod_get_optional(ak4458->dev, "reset",
 775                                                       GPIOD_OUT_LOW);
 776         if (IS_ERR(ak4458->reset_gpiod))
 777                 return PTR_ERR(ak4458->reset_gpiod);
 778
 779         ak4458->mute_gpiod = devm_gpiod_get_optional(ak4458->dev, "mute",
 780                                                      GPIOD_OUT_LOW);
 781         if (IS_ERR(ak4458->mute_gpiod))
 782                 return PTR_ERR(ak4458->mute_gpiod);
 783
 784         /* Optional property for ak4497 */
 785         of_property_read_u32(i2c->dev.of_node, "dsd-path", &ak4458->dsd_path);
 786
 787         for (i = 0; i < ARRAY_SIZE(ak4458->supplies); i++)
 788                 ak4458->supplies[i].supply = ak4458_supply_names[i];
 789
 790         ret = devm_regulator_bulk_get(ak4458->dev, ARRAY_SIZE(ak4458->supplies),
 791                                       ak4458->supplies);
 792         if (ret != 0) {
 793                 dev_err(ak4458->dev, "Failed to request supplies: %d\n", ret);
 794                 return ret;
 795         }
 796
 797         ret = devm_snd_soc_register_component(ak4458->dev,
 798                                               ak4458->drvdata->comp_drv,
 799                                               ak4458->drvdata->dai_drv, 1);
 800         if (ret < 0) {
 801                 dev_err(ak4458->dev, "Failed to register CODEC: %d\n", ret);
 802                 return ret;
 803         }
 804
 805         pm_runtime_enable(&i2c->dev);
 806         regcache_cache_only(ak4458->regmap, true);
 807
 808         return 0;
 809 }
 810
 811 static int ak4458_i2c_remove(struct i2c_client *i2c)
 812 {
 813         pm_runtime_disable(&i2c->dev);
 814
 815         return 0;
 816 }
 817
 818 static const struct of_device_id ak4458_of_match[] = {
 819         { .compatible = "asahi-kasei,ak4458", .data = &ak4458_drvdata},
 820         { .compatible = "asahi-kasei,ak4497", .data = &ak4497_drvdata},
 821         { },
 822 };
 823
 824 static struct i2c_driver ak4458_i2c_driver = {
 825         .driver = {
 826                 .name = "ak4458",
 827                 .pm = &ak4458_pm,
 828                 .of_match_table = ak4458_of_match,
 829                 },
 830         .probe_new = ak4458_i2c_probe,
 831         .remove = ak4458_i2c_remove,
 832 };
 833
 834 module_i2c_driver(ak4458_i2c_driver);
 835
 836 MODULE_AUTHOR("Junichi Wakasugi <wakasugi.jb@om.asahi-kasei.co.jp>");
 837 MODULE_AUTHOR("Mihai Serban <mihai.serban@nxp.com>");
 838 MODULE_DESCRIPTION("ASoC AK4458 DAC driver");
 839 MODULE_LICENSE("GPL v2");