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/slab.h>
  16 #include <sound/initval.h>
  17 #include <sound/pcm_params.h>
  18 #include <sound/soc.h>
  19 #include <sound/soc-dapm.h>
  20 #include <sound/tlv.h>
  21
  22 #include "ak4458.h"
  23
  24 struct ak4458_drvdata {
  25         struct snd_soc_dai_driver *dai_drv;
  26         const struct snd_soc_component_driver *comp_drv;
  27 };
  28
  29 /* AK4458 Codec Private Data */
  30 struct ak4458_priv {
  31         struct device *dev;
  32         struct regmap *regmap;
  33         struct gpio_desc *reset_gpiod;
  34         struct gpio_desc *mute_gpiod;
  35         int digfil;     /* SSLOW, SD, SLOW bits */
  36         int fs;         /* sampling rate */
  37         int fmt;
  38         int slots;
  39         int slot_width;
  40 };
  41
  42 static const struct reg_default ak4458_reg_defaults[] = {
  43         { 0x00, 0x0C }, /*      0x00    AK4458_00_CONTROL1      */
  44         { 0x01, 0x22 }, /*      0x01    AK4458_01_CONTROL2      */
  45         { 0x02, 0x00 }, /*      0x02    AK4458_02_CONTROL3      */
  46         { 0x03, 0xFF }, /*      0x03    AK4458_03_LCHATT        */
  47         { 0x04, 0xFF }, /*      0x04    AK4458_04_RCHATT        */
  48         { 0x05, 0x00 }, /*      0x05    AK4458_05_CONTROL4      */
  49         { 0x06, 0x00 }, /*      0x06    AK4458_06_DSD1          */
  50         { 0x07, 0x03 }, /*      0x07    AK4458_07_CONTROL5      */
  51         { 0x08, 0x00 }, /*      0x08    AK4458_08_SOUND_CONTROL */
  52         { 0x09, 0x00 }, /*      0x09    AK4458_09_DSD2          */
  53         { 0x0A, 0x0D }, /*      0x0A    AK4458_0A_CONTROL6      */
  54         { 0x0B, 0x0C }, /*      0x0B    AK4458_0B_CONTROL7      */
  55         { 0x0C, 0x00 }, /*      0x0C    AK4458_0C_CONTROL8      */
  56         { 0x0D, 0x00 }, /*      0x0D    AK4458_0D_CONTROL9      */
  57         { 0x0E, 0x50 }, /*      0x0E    AK4458_0E_CONTROL10     */
  58         { 0x0F, 0xFF }, /*      0x0F    AK4458_0F_L2CHATT       */
  59         { 0x10, 0xFF }, /*      0x10    AK4458_10_R2CHATT       */
  60         { 0x11, 0xFF }, /*      0x11    AK4458_11_L3CHATT       */
  61         { 0x12, 0xFF }, /*      0x12    AK4458_12_R3CHATT       */
  62         { 0x13, 0xFF }, /*      0x13    AK4458_13_L4CHATT       */
  63         { 0x14, 0xFF }, /*      0x14    AK4458_14_R4CHATT       */
  64 };
  65
  66 /*
  67  * Volume control:
  68  * from -127 to 0 dB in 0.5 dB steps (mute instead of -127.5 dB)
  69  */
  70 static DECLARE_TLV_DB_SCALE(dac_tlv, -12750, 50, 1);
  71
  72 /*
  73  * DEM1 bit DEM0 bit Mode
  74  * 0 0 44.1kHz
  75  * 0 1 OFF (default)
  76  * 1 0 48kHz
  77  * 1 1 32kHz
  78  */
  79 static const char * const ak4458_dem_select_texts[] = {
  80         "44.1kHz", "OFF", "48kHz", "32kHz"
  81 };
  82
  83 /*
  84  * SSLOW, SD, SLOW bits Digital Filter Setting
  85  * 0, 0, 0 : Sharp Roll-Off Filter
  86  * 0, 0, 1 : Slow Roll-Off Filter
  87  * 0, 1, 0 : Short delay Sharp Roll-Off Filter
  88  * 0, 1, 1 : Short delay Slow Roll-Off Filter
  89  * 1, *, * : Super Slow Roll-Off Filter
  90  */
  91 static const char * const ak4458_digfil_select_texts[] = {
  92         "Sharp Roll-Off Filter",
  93         "Slow Roll-Off Filter",
  94         "Short delay Sharp Roll-Off Filter",
  95         "Short delay Slow Roll-Off Filter",
  96         "Super Slow Roll-Off Filter"
  97 };
  98
  99 /*
 100  * DZFB: Inverting Enable of DZF
 101  * 0: DZF goes H at Zero Detection
 102  * 1: DZF goes L at Zero Detection
 103  */
 104 static const char * const ak4458_dzfb_select_texts[] = {"H", "L"};
 105
 106 /*
 107  * SC1-0 bits: Sound Mode Setting
 108  * 0 0 : Sound Mode 0
 109  * 0 1 : Sound Mode 1
 110  * 1 0 : Sound Mode 2
 111  * 1 1 : Reserved
 112  */
 113 static const char * const ak4458_sc_select_texts[] = {
 114         "Sound Mode 0", "Sound Mode 1", "Sound Mode 2"
 115 };
 116
 117 /* FIR2-0 bits: FIR Filter Mode Setting */
 118 static const char * const ak4458_fir_select_texts[] = {
 119         "Mode 0", "Mode 1", "Mode 2", "Mode 3",
 120         "Mode 4", "Mode 5", "Mode 6", "Mode 7",
 121 };
 122
 123 /* ATS1-0 bits Attenuation Speed */
 124 static const char * const ak4458_ats_select_texts[] = {
 125         "4080/fs", "2040/fs", "510/fs", "255/fs",
 126 };
 127
 128 /* DIF2 bit Audio Interface Format Setting(BICK fs) */
 129 static const char * const ak4458_dif_select_texts[] = {"32fs,48fs", "64fs",};
 130
 131 static const struct soc_enum ak4458_dac1_dem_enum =
 132         SOC_ENUM_SINGLE(AK4458_01_CONTROL2, 1,
 133                         ARRAY_SIZE(ak4458_dem_select_texts),
 134                         ak4458_dem_select_texts);
 135 static const struct soc_enum ak4458_dac2_dem_enum =
 136         SOC_ENUM_SINGLE(AK4458_0A_CONTROL6, 0,
 137                         ARRAY_SIZE(ak4458_dem_select_texts),
 138                         ak4458_dem_select_texts);
 139 static const struct soc_enum ak4458_dac3_dem_enum =
 140         SOC_ENUM_SINGLE(AK4458_0E_CONTROL10, 4,
 141                         ARRAY_SIZE(ak4458_dem_select_texts),
 142                         ak4458_dem_select_texts);
 143 static const struct soc_enum ak4458_dac4_dem_enum =
 144         SOC_ENUM_SINGLE(AK4458_0E_CONTROL10, 6,
 145                         ARRAY_SIZE(ak4458_dem_select_texts),
 146                         ak4458_dem_select_texts);
 147 static const struct soc_enum ak4458_digfil_enum =
 148         SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(ak4458_digfil_select_texts),
 149                             ak4458_digfil_select_texts);
 150 static const struct soc_enum ak4458_dzfb_enum =
 151         SOC_ENUM_SINGLE(AK4458_02_CONTROL3, 2,
 152                         ARRAY_SIZE(ak4458_dzfb_select_texts),
 153                         ak4458_dzfb_select_texts);
 154 static const struct soc_enum ak4458_sm_enum =
 155         SOC_ENUM_SINGLE(AK4458_08_SOUND_CONTROL, 0,
 156                         ARRAY_SIZE(ak4458_sc_select_texts),
 157                         ak4458_sc_select_texts);
 158 static const struct soc_enum ak4458_fir_enum =
 159         SOC_ENUM_SINGLE(AK4458_0C_CONTROL8, 0,
 160                         ARRAY_SIZE(ak4458_fir_select_texts),
 161                         ak4458_fir_select_texts);
 162 static const struct soc_enum ak4458_ats_enum =
 163         SOC_ENUM_SINGLE(AK4458_0B_CONTROL7, 6,
 164                         ARRAY_SIZE(ak4458_ats_select_texts),
 165                         ak4458_ats_select_texts);
 166 static const struct soc_enum ak4458_dif_enum =
 167         SOC_ENUM_SINGLE(AK4458_00_CONTROL1, 3,
 168                         ARRAY_SIZE(ak4458_dif_select_texts),
 169                         ak4458_dif_select_texts);
 170
 171 static int get_digfil(struct snd_kcontrol *kcontrol,
 172                       struct snd_ctl_elem_value *ucontrol)
 173 {
 174         struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol);
 175         struct ak4458_priv *ak4458 = snd_soc_component_get_drvdata(component);
 176
 177         ucontrol->value.enumerated.item[0] = ak4458->digfil;
 178
 179         return 0;
 180 }
 181
 182 static int set_digfil(struct snd_kcontrol *kcontrol,
 183                       struct snd_ctl_elem_value *ucontrol)
 184 {
 185         struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol);
 186         struct ak4458_priv *ak4458 = snd_soc_component_get_drvdata(component);
 187         int num;
 188
 189         num = ucontrol->value.enumerated.item[0];
 190         if (num > 4)
 191                 return -EINVAL;
 192
 193         ak4458->digfil = num;
 194
 195         /* write SD bit */
 196         snd_soc_component_update_bits(component, AK4458_01_CONTROL2,
 197                             AK4458_SD_MASK,
 198                             ((ak4458->digfil & 0x02) << 4));
 199
 200         /* write SLOW bit */
 201         snd_soc_component_update_bits(component, AK4458_02_CONTROL3,
 202                             AK4458_SLOW_MASK,
 203                             (ak4458->digfil & 0x01));
 204
 205         /* write SSLOW bit */
 206         snd_soc_component_update_bits(component, AK4458_05_CONTROL4,
 207                             AK4458_SSLOW_MASK,
 208                             ((ak4458->digfil & 0x04) >> 2));
 209
 210         return 0;
 211 }
 212
 213 static const struct snd_kcontrol_new ak4458_snd_controls[] = {
 214         SOC_DOUBLE_R_TLV("DAC1 Playback Volume", AK4458_03_LCHATT,
 215                          AK4458_04_RCHATT, 0, 0xFF, 0, dac_tlv),
 216         SOC_DOUBLE_R_TLV("DAC2 Playback Volume", AK4458_0F_L2CHATT,
 217                          AK4458_10_R2CHATT, 0, 0xFF, 0, dac_tlv),
 218         SOC_DOUBLE_R_TLV("DAC3 Playback Volume", AK4458_11_L3CHATT,
 219                          AK4458_12_R3CHATT, 0, 0xFF, 0, dac_tlv),
 220         SOC_DOUBLE_R_TLV("DAC4 Playback Volume", AK4458_13_L4CHATT,
 221                          AK4458_14_R4CHATT, 0, 0xFF, 0, dac_tlv),
 222         SOC_ENUM("AK4458 De-emphasis Response DAC1", ak4458_dac1_dem_enum),
 223         SOC_ENUM("AK4458 De-emphasis Response DAC2", ak4458_dac2_dem_enum),
 224         SOC_ENUM("AK4458 De-emphasis Response DAC3", ak4458_dac3_dem_enum),
 225         SOC_ENUM("AK4458 De-emphasis Response DAC4", ak4458_dac4_dem_enum),
 226         SOC_ENUM_EXT("AK4458 Digital Filter Setting", ak4458_digfil_enum,
 227                      get_digfil, set_digfil),
 228         SOC_ENUM("AK4458 Inverting Enable of DZFB", ak4458_dzfb_enum),
 229         SOC_ENUM("AK4458 Sound Mode", ak4458_sm_enum),
 230         SOC_ENUM("AK4458 FIR Filter Mode Setting", ak4458_fir_enum),
 231         SOC_ENUM("AK4458 Attenuation transition Time Setting",
 232                  ak4458_ats_enum),
 233         SOC_ENUM("AK4458 BICK fs Setting", ak4458_dif_enum),
 234 };
 235
 236 /* ak4458 dapm widgets */
 237 static const struct snd_soc_dapm_widget ak4458_dapm_widgets[] = {
 238         SND_SOC_DAPM_DAC("AK4458 DAC1", NULL, AK4458_0A_CONTROL6, 2, 0),/*pw*/
 239         SND_SOC_DAPM_AIF_IN("AK4458 SDTI", "Playback", 0, SND_SOC_NOPM, 0, 0),
 240         SND_SOC_DAPM_OUTPUT("AK4458 AOUTA"),
 241
 242         SND_SOC_DAPM_DAC("AK4458 DAC2", NULL, AK4458_0A_CONTROL6, 3, 0),/*pw*/
 243         SND_SOC_DAPM_OUTPUT("AK4458 AOUTB"),
 244
 245         SND_SOC_DAPM_DAC("AK4458 DAC3", NULL, AK4458_0B_CONTROL7, 2, 0),/*pw*/
 246         SND_SOC_DAPM_OUTPUT("AK4458 AOUTC"),
 247
 248         SND_SOC_DAPM_DAC("AK4458 DAC4", NULL, AK4458_0B_CONTROL7, 3, 0),/*pw*/
 249         SND_SOC_DAPM_OUTPUT("AK4458 AOUTD"),
 250 };
 251
 252 static const struct snd_soc_dapm_route ak4458_intercon[] = {
 253         {"AK4458 DAC1",         NULL,   "AK4458 SDTI"},
 254         {"AK4458 AOUTA",        NULL,   "AK4458 DAC1"},
 255
 256         {"AK4458 DAC2",         NULL,   "AK4458 SDTI"},
 257         {"AK4458 AOUTB",        NULL,   "AK4458 DAC2"},
 258
 259         {"AK4458 DAC3",         NULL,   "AK4458 SDTI"},
 260         {"AK4458 AOUTC",        NULL,   "AK4458 DAC3"},
 261
 262         {"AK4458 DAC4",         NULL,   "AK4458 SDTI"},
 263         {"AK4458 AOUTD",        NULL,   "AK4458 DAC4"},
 264 };
 265
 266 /* ak4497 controls */
 267 static const struct snd_kcontrol_new ak4497_snd_controls[] = {
 268         SOC_DOUBLE_R_TLV("DAC Playback Volume", AK4458_03_LCHATT,
 269                          AK4458_04_RCHATT, 0, 0xFF, 0, dac_tlv),
 270         SOC_ENUM("AK4497 De-emphasis Response DAC", ak4458_dac1_dem_enum),
 271         SOC_ENUM_EXT("AK4497 Digital Filter Setting", ak4458_digfil_enum,
 272                      get_digfil, set_digfil),
 273         SOC_ENUM("AK4497 Inverting Enable of DZFB", ak4458_dzfb_enum),
 274         SOC_ENUM("AK4497 Sound Mode", ak4458_sm_enum),
 275         SOC_ENUM("AK4497 Attenuation transition Time Setting",
 276                  ak4458_ats_enum),
 277 };
 278
 279 /* ak4497 dapm widgets */
 280 static const struct snd_soc_dapm_widget ak4497_dapm_widgets[] = {
 281         SND_SOC_DAPM_DAC("AK4497 DAC", NULL, AK4458_0A_CONTROL6, 2, 0),
 282         SND_SOC_DAPM_AIF_IN("AK4497 SDTI", "Playback", 0, SND_SOC_NOPM, 0, 0),
 283         SND_SOC_DAPM_OUTPUT("AK4497 AOUT"),
 284 };
 285
 286 /* ak4497 dapm routes */
 287 static const struct snd_soc_dapm_route ak4497_intercon[] = {
 288         {"AK4497 DAC",          NULL,   "AK4497 SDTI"},
 289         {"AK4497 AOUT",         NULL,   "AK4497 DAC"},
 290
 291 };
 292
 293 static int ak4458_rstn_control(struct snd_soc_component *component, int bit)
 294 {
 295         int ret;
 296
 297         if (bit)
 298                 ret = snd_soc_component_update_bits(component,
 299                                           AK4458_00_CONTROL1,
 300                                           AK4458_RSTN_MASK,
 301                                           0x1);
 302         else
 303                 ret = snd_soc_component_update_bits(component,
 304                                           AK4458_00_CONTROL1,
 305                                           AK4458_RSTN_MASK,
 306                                           0x0);
 307         if (ret < 0)
 308                 return ret;
 309
 310         return 0;
 311 }
 312
 313 static int ak4458_hw_params(struct snd_pcm_substream *substream,
 314                             struct snd_pcm_hw_params *params,
 315                             struct snd_soc_dai *dai)
 316 {
 317         struct snd_soc_component *component = dai->component;
 318         struct ak4458_priv *ak4458 = snd_soc_component_get_drvdata(component);
 319         int pcm_width = max(params_physical_width(params), ak4458->slot_width);
 320         int nfs1;
 321         u8 format;
 322
 323         nfs1 = params_rate(params);
 324         ak4458->fs = nfs1;
 325
 326         /* Master Clock Frequency Auto Setting Mode Enable */
 327         snd_soc_component_update_bits(component, AK4458_00_CONTROL1, 0x80, 0x80);
 328
 329         switch (pcm_width) {
 330         case 16:
 331                 if (ak4458->fmt == SND_SOC_DAIFMT_I2S)
 332                         format = AK4458_DIF_24BIT_I2S;
 333                 else
 334                         format = AK4458_DIF_16BIT_LSB;
 335                 break;
 336         case 32:
 337                 switch (ak4458->fmt) {
 338                 case SND_SOC_DAIFMT_I2S:
 339                         format = AK4458_DIF_32BIT_I2S;
 340                         break;
 341                 case SND_SOC_DAIFMT_LEFT_J:
 342                         format = AK4458_DIF_32BIT_MSB;
 343                         break;
 344                 case SND_SOC_DAIFMT_RIGHT_J:
 345                         format = AK4458_DIF_32BIT_LSB;
 346                         break;
 347                 case SND_SOC_DAIFMT_DSP_B:
 348                         format = AK4458_DIF_32BIT_MSB;
 349                         break;
 350                 default:
 351                         return -EINVAL;
 352                 }
 353                 break;
 354         default:
 355                 return -EINVAL;
 356         }
 357
 358         snd_soc_component_update_bits(component, AK4458_00_CONTROL1,
 359                             AK4458_DIF_MASK, format);
 360
 361         ak4458_rstn_control(component, 0);
 362         ak4458_rstn_control(component, 1);
 363
 364         return 0;
 365 }
 366
 367 static int ak4458_set_dai_fmt(struct snd_soc_dai *dai, unsigned int fmt)
 368 {
 369         struct snd_soc_component *component = dai->component;
 370         struct ak4458_priv *ak4458 = snd_soc_component_get_drvdata(component);
 371
 372         switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
 373         case SND_SOC_DAIFMT_CBS_CFS: /* Slave Mode */
 374                 break;
 375         case SND_SOC_DAIFMT_CBM_CFM: /* Master Mode is not supported */
 376         case SND_SOC_DAIFMT_CBS_CFM:
 377         case SND_SOC_DAIFMT_CBM_CFS:
 378         default:
 379                 dev_err(component->dev, "Master mode unsupported\n");
 380                 return -EINVAL;
 381         }
 382
 383         switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
 384         case SND_SOC_DAIFMT_I2S:
 385         case SND_SOC_DAIFMT_LEFT_J:
 386         case SND_SOC_DAIFMT_RIGHT_J:
 387         case SND_SOC_DAIFMT_DSP_B:
 388                 ak4458->fmt = fmt & SND_SOC_DAIFMT_FORMAT_MASK;
 389                 break;
 390         default:
 391                 dev_err(component->dev, "Audio format 0x%02X unsupported\n",
 392                         fmt & SND_SOC_DAIFMT_FORMAT_MASK);
 393                 return -EINVAL;
 394         }
 395
 396         ak4458_rstn_control(component, 0);
 397         ak4458_rstn_control(component, 1);
 398
 399         return 0;
 400 }
 401
 402 static const int att_speed[] = { 4080, 2040, 510, 255 };
 403
 404 static int ak4458_set_dai_mute(struct snd_soc_dai *dai, int mute)
 405 {
 406         struct snd_soc_component *component = dai->component;
 407         struct ak4458_priv *ak4458 = snd_soc_component_get_drvdata(component);
 408         int nfs, ndt, ret, reg;
 409         int ats;
 410
 411         nfs = ak4458->fs;
 412
 413         reg = snd_soc_component_read32(component, AK4458_0B_CONTROL7);
 414         ats = (reg & AK4458_ATS_MASK) >> AK4458_ATS_SHIFT;
 415
 416         ndt = att_speed[ats] / (nfs / 1000);
 417
 418         if (mute) {
 419                 ret = snd_soc_component_update_bits(component, AK4458_01_CONTROL2,  0x01, 1);
 420                 mdelay(ndt);
 421                 if (ak4458->mute_gpiod)
 422                         gpiod_set_value_cansleep(ak4458->mute_gpiod, 1);
 423         } else {
 424                 if (ak4458->mute_gpiod)
 425                         gpiod_set_value_cansleep(ak4458->mute_gpiod, 0);
 426                 ret = snd_soc_component_update_bits(component, AK4458_01_CONTROL2, 0x01, 0);
 427                 mdelay(ndt);
 428         }
 429
 430         return 0;
 431 }
 432
 433 static int ak4458_set_tdm_slot(struct snd_soc_dai *dai, unsigned int tx_mask,
 434                                unsigned int rx_mask, int slots, int slot_width)
 435 {
 436         struct snd_soc_component *component = dai->component;
 437         struct ak4458_priv *ak4458 = snd_soc_component_get_drvdata(component);
 438         int mode;
 439
 440         ak4458->slots = slots;
 441         ak4458->slot_width = slot_width;
 442
 443         switch (slots * slot_width) {
 444         case 128:
 445                 mode = AK4458_MODE_TDM128;
 446                 break;
 447         case 256:
 448                 mode = AK4458_MODE_TDM256;
 449                 break;
 450         case 512:
 451                 mode = AK4458_MODE_TDM512;
 452                 break;
 453         default:
 454                 mode = AK4458_MODE_NORMAL;
 455                 break;
 456         }
 457
 458         snd_soc_component_update_bits(component, AK4458_0A_CONTROL6,
 459                             AK4458_MODE_MASK,
 460                             mode);
 461
 462         return 0;
 463 }
 464
 465 #define AK4458_FORMATS  (SNDRV_PCM_FMTBIT_S16_LE |\
 466                          SNDRV_PCM_FMTBIT_S24_LE |\
 467                          SNDRV_PCM_FMTBIT_S32_LE)
 468
 469 static const unsigned int ak4458_rates[] = {
 470         8000, 11025,  16000, 22050,
 471         32000, 44100, 48000, 88200,
 472         96000, 176400, 192000, 352800,
 473         384000, 705600, 768000, 1411200,
 474         2822400,
 475 };
 476
 477 static const struct snd_pcm_hw_constraint_list ak4458_rate_constraints = {
 478         .count = ARRAY_SIZE(ak4458_rates),
 479         .list = ak4458_rates,
 480 };
 481
 482 static int ak4458_startup(struct snd_pcm_substream *substream,
 483                           struct snd_soc_dai *dai)
 484 {
 485         int ret;
 486
 487         ret = snd_pcm_hw_constraint_list(substream->runtime, 0,
 488                                          SNDRV_PCM_HW_PARAM_RATE,
 489                                          &ak4458_rate_constraints);
 490
 491         return ret;
 492 }
 493
 494 static const struct snd_soc_dai_ops ak4458_dai_ops = {
 495         .startup        = ak4458_startup,
 496         .hw_params      = ak4458_hw_params,
 497         .set_fmt        = ak4458_set_dai_fmt,
 498         .digital_mute   = ak4458_set_dai_mute,
 499         .set_tdm_slot   = ak4458_set_tdm_slot,
 500 };
 501
 502 static struct snd_soc_dai_driver ak4458_dai = {
 503         .name = "ak4458-aif",
 504         .playback = {
 505                 .stream_name = "Playback",
 506                 .channels_min = 1,
 507                 .channels_max = 8,
 508                 .rates = SNDRV_PCM_RATE_KNOT,
 509                 .formats = AK4458_FORMATS,
 510         },
 511         .ops = &ak4458_dai_ops,
 512 };
 513
 514 static struct snd_soc_dai_driver ak4497_dai = {
 515         .name = "ak4497-aif",
 516         .playback = {
 517                 .stream_name = "Playback",
 518                 .channels_min = 1,
 519                 .channels_max = 2,
 520                 .rates = SNDRV_PCM_RATE_KNOT,
 521                 .formats = AK4458_FORMATS,
 522         },
 523         .ops = &ak4458_dai_ops,
 524 };
 525
 526 static void ak4458_power_off(struct ak4458_priv *ak4458)
 527 {
 528         if (ak4458->reset_gpiod) {
 529                 gpiod_set_value_cansleep(ak4458->reset_gpiod, 0);
 530                 usleep_range(1000, 2000);
 531         }
 532 }
 533
 534 static void ak4458_power_on(struct ak4458_priv *ak4458)
 535 {
 536         if (ak4458->reset_gpiod) {
 537                 gpiod_set_value_cansleep(ak4458->reset_gpiod, 1);
 538                 usleep_range(1000, 2000);
 539         }
 540 }
 541
 542 static int ak4458_init(struct snd_soc_component *component)
 543 {
 544         struct ak4458_priv *ak4458 = snd_soc_component_get_drvdata(component);
 545         int ret;
 546
 547         /* External Mute ON */
 548         if (ak4458->mute_gpiod)
 549                 gpiod_set_value_cansleep(ak4458->mute_gpiod, 1);
 550
 551         ak4458_power_on(ak4458);
 552
 553         ret = snd_soc_component_update_bits(component, AK4458_00_CONTROL1,
 554                             0x80, 0x80);   /* ACKS bit = 1; 10000000 */
 555         if (ret < 0)
 556                 return ret;
 557
 558         return ak4458_rstn_control(component, 1);
 559 }
 560
 561 static int ak4458_probe(struct snd_soc_component *component)
 562 {
 563         struct ak4458_priv *ak4458 = snd_soc_component_get_drvdata(component);
 564
 565         ak4458->fs = 48000;
 566
 567         return ak4458_init(component);
 568 }
 569
 570 static void ak4458_remove(struct snd_soc_component *component)
 571 {
 572         struct ak4458_priv *ak4458 = snd_soc_component_get_drvdata(component);
 573
 574         ak4458_power_off(ak4458);
 575 }
 576
 577 #ifdef CONFIG_PM
 578 static int __maybe_unused ak4458_runtime_suspend(struct device *dev)
 579 {
 580         struct ak4458_priv *ak4458 = dev_get_drvdata(dev);
 581
 582         regcache_cache_only(ak4458->regmap, true);
 583
 584         ak4458_power_off(ak4458);
 585
 586         if (ak4458->mute_gpiod)
 587                 gpiod_set_value_cansleep(ak4458->mute_gpiod, 0);
 588
 589         return 0;
 590 }
 591
 592 static int __maybe_unused ak4458_runtime_resume(struct device *dev)
 593 {
 594         struct ak4458_priv *ak4458 = dev_get_drvdata(dev);
 595
 596         if (ak4458->mute_gpiod)
 597                 gpiod_set_value_cansleep(ak4458->mute_gpiod, 1);
 598
 599         ak4458_power_off(ak4458);
 600         ak4458_power_on(ak4458);
 601
 602         regcache_cache_only(ak4458->regmap, false);
 603         regcache_mark_dirty(ak4458->regmap);
 604
 605         return regcache_sync(ak4458->regmap);
 606 }
 607 #endif /* CONFIG_PM */
 608
 609 static const struct snd_soc_component_driver soc_codec_dev_ak4458 = {
 610         .probe                  = ak4458_probe,
 611         .remove                 = ak4458_remove,
 612         .controls               = ak4458_snd_controls,
 613         .num_controls           = ARRAY_SIZE(ak4458_snd_controls),
 614         .dapm_widgets           = ak4458_dapm_widgets,
 615         .num_dapm_widgets       = ARRAY_SIZE(ak4458_dapm_widgets),
 616         .dapm_routes            = ak4458_intercon,
 617         .num_dapm_routes        = ARRAY_SIZE(ak4458_intercon),
 618         .idle_bias_on           = 1,
 619         .use_pmdown_time        = 1,
 620         .endianness             = 1,
 621         .non_legacy_dai_naming  = 1,
 622 };
 623
 624 static const struct snd_soc_component_driver soc_codec_dev_ak4497 = {
 625         .probe                  = ak4458_probe,
 626         .remove                 = ak4458_remove,
 627         .controls               = ak4497_snd_controls,
 628         .num_controls           = ARRAY_SIZE(ak4497_snd_controls),
 629         .dapm_widgets           = ak4497_dapm_widgets,
 630         .num_dapm_widgets       = ARRAY_SIZE(ak4497_dapm_widgets),
 631         .dapm_routes            = ak4497_intercon,
 632         .num_dapm_routes        = ARRAY_SIZE(ak4497_intercon),
 633         .idle_bias_on           = 1,
 634         .use_pmdown_time        = 1,
 635         .endianness             = 1,
 636         .non_legacy_dai_naming  = 1,
 637 };
 638
 639 static const struct regmap_config ak4458_regmap = {
 640         .reg_bits = 8,
 641         .val_bits = 8,
 642
 643         .max_register = AK4458_14_R4CHATT,
 644         .reg_defaults = ak4458_reg_defaults,
 645         .num_reg_defaults = ARRAY_SIZE(ak4458_reg_defaults),
 646         .cache_type = REGCACHE_RBTREE,
 647 };
 648
 649 static const struct ak4458_drvdata ak4458_drvdata = {
 650         .dai_drv = &ak4458_dai,
 651         .comp_drv = &soc_codec_dev_ak4458,
 652 };
 653
 654 static const struct ak4458_drvdata ak4497_drvdata = {
 655         .dai_drv = &ak4497_dai,
 656         .comp_drv = &soc_codec_dev_ak4497,
 657 };
 658
 659 static const struct dev_pm_ops ak4458_pm = {
 660         SET_RUNTIME_PM_OPS(ak4458_runtime_suspend, ak4458_runtime_resume, NULL)
 661         SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend,
 662                                 pm_runtime_force_resume)
 663 };
 664
 665 static int ak4458_i2c_probe(struct i2c_client *i2c)
 666 {
 667         struct ak4458_priv *ak4458;
 668         const struct ak4458_drvdata *drvdata;
 669         int ret;
 670
 671         ak4458 = devm_kzalloc(&i2c->dev, sizeof(*ak4458), GFP_KERNEL);
 672         if (!ak4458)
 673                 return -ENOMEM;
 674
 675         ak4458->regmap = devm_regmap_init_i2c(i2c, &ak4458_regmap);
 676         if (IS_ERR(ak4458->regmap))
 677                 return PTR_ERR(ak4458->regmap);
 678
 679         i2c_set_clientdata(i2c, ak4458);
 680         ak4458->dev = &i2c->dev;
 681
 682         drvdata = of_device_get_match_data(&i2c->dev);
 683
 684         ak4458->reset_gpiod = devm_gpiod_get_optional(ak4458->dev, "reset",
 685                                                       GPIOD_OUT_LOW);
 686         if (IS_ERR(ak4458->reset_gpiod))
 687                 return PTR_ERR(ak4458->reset_gpiod);
 688
 689         ak4458->mute_gpiod = devm_gpiod_get_optional(ak4458->dev, "mute",
 690                                                      GPIOD_OUT_LOW);
 691         if (IS_ERR(ak4458->mute_gpiod))
 692                 return PTR_ERR(ak4458->mute_gpiod);
 693
 694         ret = devm_snd_soc_register_component(ak4458->dev, drvdata->comp_drv,
 695                                               drvdata->dai_drv, 1);
 696         if (ret < 0) {
 697                 dev_err(ak4458->dev, "Failed to register CODEC: %d\n", ret);
 698                 return ret;
 699         }
 700
 701         pm_runtime_enable(&i2c->dev);
 702
 703         return 0;
 704 }
 705
 706 static int ak4458_i2c_remove(struct i2c_client *i2c)
 707 {
 708         pm_runtime_disable(&i2c->dev);
 709
 710         return 0;
 711 }
 712
 713 static const struct of_device_id ak4458_of_match[] = {
 714         { .compatible = "asahi-kasei,ak4458", .data = &ak4458_drvdata},
 715         { .compatible = "asahi-kasei,ak4497", .data = &ak4497_drvdata},
 716         { },
 717 };
 718
 719 static struct i2c_driver ak4458_i2c_driver = {
 720         .driver = {
 721                 .name = "ak4458",
 722                 .pm = &ak4458_pm,
 723                 .of_match_table = ak4458_of_match,
 724                 },
 725         .probe_new = ak4458_i2c_probe,
 726         .remove = ak4458_i2c_remove,
 727 };
 728
 729 module_i2c_driver(ak4458_i2c_driver);
 730
 731 MODULE_AUTHOR("Junichi Wakasugi <wakasugi.jb@om.asahi-kasei.co.jp>");
 732 MODULE_AUTHOR("Mihai Serban <mihai.serban@nxp.com>");
 733 MODULE_DESCRIPTION("ASoC AK4458 DAC driver");
 734 MODULE_LICENSE("GPL v2");