sound/soc/codecs/tas2770.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 //
   3 // ALSA SoC Texas Instruments TAS2770 20-W Digital Input Mono Class-D
   4 // Audio Amplifier with Speaker I/V Sense
   5 //
   6 // Copyright (C) 2016-2017 Texas Instruments Incorporated - https://www.ti.com/
   7 //      Author: Tracy Yi <tracy-yi@ti.com>
   8 //      Frank Shi <shifu0704@thundersoft.com>
   9
  10 #include <linux/module.h>
  11 #include <linux/moduleparam.h>
  12 #include <linux/err.h>
  13 #include <linux/init.h>
  14 #include <linux/delay.h>
  15 #include <linux/pm.h>
  16 #include <linux/i2c.h>
  17 #include <linux/gpio.h>
  18 #include <linux/gpio/consumer.h>
  19 #include <linux/regulator/consumer.h>
  20 #include <linux/firmware.h>
  21 #include <linux/regmap.h>
  22 #include <linux/of.h>
  23 #include <linux/of_gpio.h>
  24 #include <linux/slab.h>
  25 #include <sound/soc.h>
  26 #include <sound/pcm.h>
  27 #include <sound/pcm_params.h>
  28 #include <sound/initval.h>
  29 #include <sound/tlv.h>
  30
  31 #include "tas2770.h"
  32
  33 #define TAS2770_MDELAY 0xFFFFFFFE
  34
  35 static void tas2770_reset(struct tas2770_priv *tas2770)
  36 {
  37         if (tas2770->reset_gpio) {
  38                 gpiod_set_value_cansleep(tas2770->reset_gpio, 0);
  39                 msleep(20);
  40                 gpiod_set_value_cansleep(tas2770->reset_gpio, 1);
  41                 usleep_range(1000, 2000);
  42         }
  43
  44         snd_soc_component_write(tas2770->component, TAS2770_SW_RST,
  45                 TAS2770_RST);
  46         usleep_range(1000, 2000);
  47 }
  48
  49 static int tas2770_set_bias_level(struct snd_soc_component *component,
  50                                  enum snd_soc_bias_level level)
  51 {
  52         struct tas2770_priv *tas2770 =
  53                         snd_soc_component_get_drvdata(component);
  54
  55         switch (level) {
  56         case SND_SOC_BIAS_ON:
  57                 snd_soc_component_update_bits(component, TAS2770_PWR_CTRL,
  58                                               TAS2770_PWR_CTRL_MASK,
  59                                               TAS2770_PWR_CTRL_ACTIVE);
  60                 break;
  61         case SND_SOC_BIAS_STANDBY:
  62         case SND_SOC_BIAS_PREPARE:
  63                 snd_soc_component_update_bits(component, TAS2770_PWR_CTRL,
  64                                               TAS2770_PWR_CTRL_MASK,
  65                                               TAS2770_PWR_CTRL_MUTE);
  66                 break;
  67         case SND_SOC_BIAS_OFF:
  68                 snd_soc_component_update_bits(component, TAS2770_PWR_CTRL,
  69                                               TAS2770_PWR_CTRL_MASK,
  70                                               TAS2770_PWR_CTRL_SHUTDOWN);
  71                 break;
  72
  73         default:
  74                 dev_err(tas2770->dev, "wrong power level setting %d\n", level);
  75                 return -EINVAL;
  76         }
  77
  78         return 0;
  79 }
  80
  81 #ifdef CONFIG_PM
  82 static int tas2770_codec_suspend(struct snd_soc_component *component)
  83 {
  84         struct tas2770_priv *tas2770 = snd_soc_component_get_drvdata(component);
  85         int ret = 0;
  86
  87         regcache_cache_only(tas2770->regmap, true);
  88         regcache_mark_dirty(tas2770->regmap);
  89
  90         if (tas2770->sdz_gpio) {
  91                 gpiod_set_value_cansleep(tas2770->sdz_gpio, 0);
  92         } else {
  93                 ret = snd_soc_component_update_bits(component, TAS2770_PWR_CTRL,
  94                                                     TAS2770_PWR_CTRL_MASK,
  95                                                     TAS2770_PWR_CTRL_SHUTDOWN);
  96                 if (ret < 0) {
  97                         regcache_cache_only(tas2770->regmap, false);
  98                         regcache_sync(tas2770->regmap);
  99                         return ret;
 100                 }
 101
 102                 ret = 0;
 103         }
 104
 105         return ret;
 106 }
 107
 108 static int tas2770_codec_resume(struct snd_soc_component *component)
 109 {
 110         struct tas2770_priv *tas2770 = snd_soc_component_get_drvdata(component);
 111         int ret;
 112
 113         if (tas2770->sdz_gpio) {
 114                 gpiod_set_value_cansleep(tas2770->sdz_gpio, 1);
 115                 usleep_range(1000, 2000);
 116         } else {
 117                 ret = snd_soc_component_update_bits(component, TAS2770_PWR_CTRL,
 118                                                     TAS2770_PWR_CTRL_MASK,
 119                                                     TAS2770_PWR_CTRL_ACTIVE);
 120                 if (ret < 0)
 121                         return ret;
 122         }
 123
 124         regcache_cache_only(tas2770->regmap, false);
 125
 126         return regcache_sync(tas2770->regmap);
 127 }
 128 #else
 129 #define tas2770_codec_suspend NULL
 130 #define tas2770_codec_resume NULL
 131 #endif
 132
 133 static const char * const tas2770_ASI1_src[] = {
 134         "I2C offset", "Left", "Right", "LeftRightDiv2",
 135 };
 136
 137 static SOC_ENUM_SINGLE_DECL(
 138         tas2770_ASI1_src_enum, TAS2770_TDM_CFG_REG2,
 139         4, tas2770_ASI1_src);
 140
 141 static const struct snd_kcontrol_new tas2770_asi1_mux =
 142         SOC_DAPM_ENUM("ASI1 Source", tas2770_ASI1_src_enum);
 143
 144 static int tas2770_dac_event(struct snd_soc_dapm_widget *w,
 145                              struct snd_kcontrol *kcontrol, int event)
 146 {
 147         struct snd_soc_component *component =
 148                         snd_soc_dapm_to_component(w->dapm);
 149         struct tas2770_priv *tas2770 =
 150                         snd_soc_component_get_drvdata(component);
 151         int ret;
 152
 153         switch (event) {
 154         case SND_SOC_DAPM_POST_PMU:
 155                 ret = snd_soc_component_update_bits(component, TAS2770_PWR_CTRL,
 156                                                     TAS2770_PWR_CTRL_MASK,
 157                                                     TAS2770_PWR_CTRL_MUTE);
 158                 break;
 159         case SND_SOC_DAPM_PRE_PMD:
 160                 ret = snd_soc_component_update_bits(component, TAS2770_PWR_CTRL,
 161                                                     TAS2770_PWR_CTRL_MASK,
 162                                                     TAS2770_PWR_CTRL_SHUTDOWN);
 163                 break;
 164         default:
 165                 dev_err(tas2770->dev, "Not supported evevt\n");
 166                 return -EINVAL;
 167         }
 168
 169         if (ret < 0)
 170                 return ret;
 171
 172         return 0;
 173 }
 174
 175 static const struct snd_kcontrol_new isense_switch =
 176         SOC_DAPM_SINGLE("Switch", TAS2770_PWR_CTRL, 3, 1, 1);
 177 static const struct snd_kcontrol_new vsense_switch =
 178         SOC_DAPM_SINGLE("Switch", TAS2770_PWR_CTRL, 2, 1, 1);
 179
 180 static const struct snd_soc_dapm_widget tas2770_dapm_widgets[] = {
 181         SND_SOC_DAPM_AIF_IN("ASI1", "ASI1 Playback", 0, SND_SOC_NOPM, 0, 0),
 182         SND_SOC_DAPM_MUX("ASI1 Sel", SND_SOC_NOPM, 0, 0, &tas2770_asi1_mux),
 183         SND_SOC_DAPM_SWITCH("ISENSE", TAS2770_PWR_CTRL, 3, 1, &isense_switch),
 184         SND_SOC_DAPM_SWITCH("VSENSE", TAS2770_PWR_CTRL, 2, 1, &vsense_switch),
 185         SND_SOC_DAPM_DAC_E("DAC", NULL, SND_SOC_NOPM, 0, 0, tas2770_dac_event,
 186                            SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD),
 187         SND_SOC_DAPM_OUTPUT("OUT"),
 188         SND_SOC_DAPM_SIGGEN("VMON"),
 189         SND_SOC_DAPM_SIGGEN("IMON")
 190 };
 191
 192 static const struct snd_soc_dapm_route tas2770_audio_map[] = {
 193         {"ASI1 Sel", "I2C offset", "ASI1"},
 194         {"ASI1 Sel", "Left", "ASI1"},
 195         {"ASI1 Sel", "Right", "ASI1"},
 196         {"ASI1 Sel", "LeftRightDiv2", "ASI1"},
 197         {"DAC", NULL, "ASI1 Sel"},
 198         {"OUT", NULL, "DAC"},
 199         {"ISENSE", "Switch", "IMON"},
 200         {"VSENSE", "Switch", "VMON"},
 201 };
 202
 203 static int tas2770_mute(struct snd_soc_dai *dai, int mute, int direction)
 204 {
 205         struct snd_soc_component *component = dai->component;
 206         int ret;
 207
 208         if (mute)
 209                 ret = snd_soc_component_update_bits(component, TAS2770_PWR_CTRL,
 210                                                     TAS2770_PWR_CTRL_MASK,
 211                                                     TAS2770_PWR_CTRL_MUTE);
 212         else
 213                 ret = snd_soc_component_update_bits(component, TAS2770_PWR_CTRL,
 214                                                     TAS2770_PWR_CTRL_MASK,
 215                                                     TAS2770_PWR_CTRL_ACTIVE);
 216
 217         if (ret < 0)
 218                 return ret;
 219
 220         return 0;
 221 }
 222
 223 static int tas2770_set_bitwidth(struct tas2770_priv *tas2770, int bitwidth)
 224 {
 225         int ret;
 226         struct snd_soc_component *component = tas2770->component;
 227
 228         switch (bitwidth) {
 229         case SNDRV_PCM_FORMAT_S16_LE:
 230                 ret = snd_soc_component_update_bits(component, TAS2770_TDM_CFG_REG2,
 231                                                     TAS2770_TDM_CFG_REG2_RXW_MASK,
 232                                                     TAS2770_TDM_CFG_REG2_RXW_16BITS);
 233                 tas2770->v_sense_slot = tas2770->i_sense_slot + 2;
 234                 break;
 235         case SNDRV_PCM_FORMAT_S24_LE:
 236                 ret = snd_soc_component_update_bits(component, TAS2770_TDM_CFG_REG2,
 237                                                     TAS2770_TDM_CFG_REG2_RXW_MASK,
 238                                                     TAS2770_TDM_CFG_REG2_RXW_24BITS);
 239                 tas2770->v_sense_slot = tas2770->i_sense_slot + 4;
 240                 break;
 241         case SNDRV_PCM_FORMAT_S32_LE:
 242                 ret = snd_soc_component_update_bits(component, TAS2770_TDM_CFG_REG2,
 243                                                     TAS2770_TDM_CFG_REG2_RXW_MASK,
 244                                                     TAS2770_TDM_CFG_REG2_RXW_32BITS);
 245                 tas2770->v_sense_slot = tas2770->i_sense_slot + 4;
 246                 break;
 247
 248         default:
 249                 return -EINVAL;
 250         }
 251
 252         if (ret < 0)
 253                 return ret;
 254
 255         ret = snd_soc_component_update_bits(component, TAS2770_TDM_CFG_REG5,
 256                                             TAS2770_TDM_CFG_REG5_VSNS_MASK |
 257                                             TAS2770_TDM_CFG_REG5_50_MASK,
 258                                             TAS2770_TDM_CFG_REG5_VSNS_ENABLE |
 259                 tas2770->v_sense_slot);
 260         if (ret < 0)
 261                 return ret;
 262
 263         ret = snd_soc_component_update_bits(component, TAS2770_TDM_CFG_REG6,
 264                                             TAS2770_TDM_CFG_REG6_ISNS_MASK |
 265                                             TAS2770_TDM_CFG_REG6_50_MASK,
 266                                             TAS2770_TDM_CFG_REG6_ISNS_ENABLE |
 267                                             tas2770->i_sense_slot);
 268         if (ret < 0)
 269                 return ret;
 270
 271         return 0;
 272 }
 273
 274 static int tas2770_set_samplerate(struct tas2770_priv *tas2770, int samplerate)
 275 {
 276         struct snd_soc_component *component = tas2770->component;
 277         int ramp_rate_val;
 278         int ret;
 279
 280         switch (samplerate) {
 281         case 48000:
 282                 ramp_rate_val = TAS2770_TDM_CFG_REG0_SMP_48KHZ |
 283                                 TAS2770_TDM_CFG_REG0_31_44_1_48KHZ;
 284                 break;
 285         case 44100:
 286                 ramp_rate_val = TAS2770_TDM_CFG_REG0_SMP_44_1KHZ |
 287                                 TAS2770_TDM_CFG_REG0_31_44_1_48KHZ;
 288                 break;
 289         case 96000:
 290                 ramp_rate_val = TAS2770_TDM_CFG_REG0_SMP_48KHZ |
 291                                 TAS2770_TDM_CFG_REG0_31_88_2_96KHZ;
 292                 break;
 293         case 88200:
 294                 ramp_rate_val = TAS2770_TDM_CFG_REG0_SMP_44_1KHZ |
 295                                 TAS2770_TDM_CFG_REG0_31_88_2_96KHZ;
 296                 break;
 297         case 192000:
 298                 ramp_rate_val = TAS2770_TDM_CFG_REG0_SMP_48KHZ |
 299                                 TAS2770_TDM_CFG_REG0_31_176_4_192KHZ;
 300                 break;
 301         case 176400:
 302                 ramp_rate_val = TAS2770_TDM_CFG_REG0_SMP_44_1KHZ |
 303                                 TAS2770_TDM_CFG_REG0_31_176_4_192KHZ;
 304                 break;
 305         default:
 306                 return -EINVAL;
 307         }
 308
 309         ret = snd_soc_component_update_bits(component, TAS2770_TDM_CFG_REG0,
 310                                             TAS2770_TDM_CFG_REG0_SMP_MASK |
 311                                             TAS2770_TDM_CFG_REG0_31_MASK,
 312                                             ramp_rate_val);
 313         if (ret < 0)
 314                 return ret;
 315
 316         return 0;
 317 }
 318
 319 static int tas2770_hw_params(struct snd_pcm_substream *substream,
 320                              struct snd_pcm_hw_params *params,
 321                              struct snd_soc_dai *dai)
 322 {
 323         struct snd_soc_component *component = dai->component;
 324         struct tas2770_priv *tas2770 =
 325                         snd_soc_component_get_drvdata(component);
 326         int ret;
 327
 328         ret = tas2770_set_bitwidth(tas2770, params_format(params));
 329         if (ret)
 330                 return ret;
 331
 332         return tas2770_set_samplerate(tas2770, params_rate(params));
 333 }
 334
 335 static int tas2770_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
 336 {
 337         struct snd_soc_component *component = dai->component;
 338         struct tas2770_priv *tas2770 =
 339                         snd_soc_component_get_drvdata(component);
 340         u8 tdm_rx_start_slot = 0, invert_fpol = 0, fpol_preinv = 0, asi_cfg_1 = 0;
 341         int ret;
 342
 343         switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
 344         case SND_SOC_DAIFMT_CBS_CFS:
 345                 break;
 346         default:
 347                 dev_err(tas2770->dev, "ASI format master is not found\n");
 348                 return -EINVAL;
 349         }
 350
 351         switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
 352         case SND_SOC_DAIFMT_NB_IF:
 353                 invert_fpol = 1;
 354                 fallthrough;
 355         case SND_SOC_DAIFMT_NB_NF:
 356                 asi_cfg_1 |= TAS2770_TDM_CFG_REG1_RX_RSING;
 357                 break;
 358         case SND_SOC_DAIFMT_IB_IF:
 359                 invert_fpol = 1;
 360                 fallthrough;
 361         case SND_SOC_DAIFMT_IB_NF:
 362                 asi_cfg_1 |= TAS2770_TDM_CFG_REG1_RX_FALING;
 363                 break;
 364         default:
 365                 dev_err(tas2770->dev, "ASI format Inverse is not found\n");
 366                 return -EINVAL;
 367         }
 368
 369         ret = snd_soc_component_update_bits(component, TAS2770_TDM_CFG_REG1,
 370                                             TAS2770_TDM_CFG_REG1_RX_MASK,
 371                                             asi_cfg_1);
 372         if (ret < 0)
 373                 return ret;
 374
 375         switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
 376         case SND_SOC_DAIFMT_I2S:
 377                 tdm_rx_start_slot = 1;
 378                 fpol_preinv = 0;
 379                 break;
 380         case SND_SOC_DAIFMT_DSP_A:
 381                 tdm_rx_start_slot = 0;
 382                 fpol_preinv = 1;
 383                 break;
 384         case SND_SOC_DAIFMT_DSP_B:
 385                 tdm_rx_start_slot = 1;
 386                 fpol_preinv = 1;
 387                 break;
 388         case SND_SOC_DAIFMT_LEFT_J:
 389                 tdm_rx_start_slot = 0;
 390                 fpol_preinv = 1;
 391                 break;
 392         default:
 393                 dev_err(tas2770->dev,
 394                         "DAI Format is not found, fmt=0x%x\n", fmt);
 395                 return -EINVAL;
 396         }
 397
 398         ret = snd_soc_component_update_bits(component, TAS2770_TDM_CFG_REG1,
 399                                             TAS2770_TDM_CFG_REG1_MASK,
 400                                             (tdm_rx_start_slot << TAS2770_TDM_CFG_REG1_51_SHIFT));
 401         if (ret < 0)
 402                 return ret;
 403
 404         ret = snd_soc_component_update_bits(component, TAS2770_TDM_CFG_REG0,
 405                                             TAS2770_TDM_CFG_REG0_FPOL_MASK,
 406                                             (fpol_preinv ^ invert_fpol)
 407                                              ? TAS2770_TDM_CFG_REG0_FPOL_RSING
 408                                              : TAS2770_TDM_CFG_REG0_FPOL_FALING);
 409         if (ret < 0)
 410                 return ret;
 411
 412         return 0;
 413 }
 414
 415 static int tas2770_set_dai_tdm_slot(struct snd_soc_dai *dai,
 416                                 unsigned int tx_mask,
 417                                 unsigned int rx_mask,
 418                                 int slots, int slot_width)
 419 {
 420         struct snd_soc_component *component = dai->component;
 421         int left_slot, right_slot;
 422         int ret;
 423
 424         if (tx_mask == 0 || rx_mask != 0)
 425                 return -EINVAL;
 426
 427         if (slots == 1) {
 428                 if (tx_mask != 1)
 429                         return -EINVAL;
 430
 431                 left_slot = 0;
 432                 right_slot = 0;
 433         } else {
 434                 left_slot = __ffs(tx_mask);
 435                 tx_mask &= ~(1 << left_slot);
 436                 if (tx_mask == 0) {
 437                         right_slot = left_slot;
 438                 } else {
 439                         right_slot = __ffs(tx_mask);
 440                         tx_mask &= ~(1 << right_slot);
 441                 }
 442         }
 443
 444         if (tx_mask != 0 || left_slot >= slots || right_slot >= slots)
 445                 return -EINVAL;
 446
 447         ret = snd_soc_component_update_bits(component, TAS2770_TDM_CFG_REG3,
 448                                             TAS2770_TDM_CFG_REG3_30_MASK,
 449                                             (left_slot << TAS2770_TDM_CFG_REG3_30_SHIFT));
 450         if (ret < 0)
 451                 return ret;
 452         ret = snd_soc_component_update_bits(component, TAS2770_TDM_CFG_REG3,
 453                                             TAS2770_TDM_CFG_REG3_RXS_MASK,
 454                                             (right_slot << TAS2770_TDM_CFG_REG3_RXS_SHIFT));
 455         if (ret < 0)
 456                 return ret;
 457
 458         switch (slot_width) {
 459         case 16:
 460                 ret = snd_soc_component_update_bits(component, TAS2770_TDM_CFG_REG2,
 461                                                     TAS2770_TDM_CFG_REG2_RXS_MASK,
 462                                                     TAS2770_TDM_CFG_REG2_RXS_16BITS);
 463                 break;
 464         case 24:
 465                 ret = snd_soc_component_update_bits(component, TAS2770_TDM_CFG_REG2,
 466                                                     TAS2770_TDM_CFG_REG2_RXS_MASK,
 467                                                     TAS2770_TDM_CFG_REG2_RXS_24BITS);
 468                 break;
 469         case 32:
 470                 ret = snd_soc_component_update_bits(component, TAS2770_TDM_CFG_REG2,
 471                                                     TAS2770_TDM_CFG_REG2_RXS_MASK,
 472                                                     TAS2770_TDM_CFG_REG2_RXS_32BITS);
 473                 break;
 474         case 0:
 475                 /* Do not change slot width */
 476                 ret = 0;
 477                 break;
 478         default:
 479                 ret = -EINVAL;
 480         }
 481
 482         if (ret < 0)
 483                 return ret;
 484
 485         return 0;
 486 }
 487
 488 static const struct snd_soc_dai_ops tas2770_dai_ops = {
 489         .mute_stream = tas2770_mute,
 490         .hw_params  = tas2770_hw_params,
 491         .set_fmt    = tas2770_set_fmt,
 492         .set_tdm_slot = tas2770_set_dai_tdm_slot,
 493         .no_capture_mute = 1,
 494 };
 495
 496 #define TAS2770_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\
 497                 SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE)
 498
 499 #define TAS2770_RATES (SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000 |\
 500                                            SNDRV_PCM_RATE_96000 |\
 501                                             SNDRV_PCM_RATE_192000\
 502                                           )
 503
 504 static struct snd_soc_dai_driver tas2770_dai_driver[] = {
 505         {
 506                 .name = "tas2770 ASI1",
 507                 .id = 0,
 508                 .playback = {
 509                         .stream_name    = "ASI1 Playback",
 510                         .channels_min   = 1,
 511                         .channels_max   = 2,
 512                         .rates      = TAS2770_RATES,
 513                         .formats    = TAS2770_FORMATS,
 514                 },
 515                 .capture = {
 516                         .stream_name    = "ASI1 Capture",
 517                         .channels_min   = 0,
 518                         .channels_max   = 2,
 519                         .rates          = TAS2770_RATES,
 520                         .formats    = TAS2770_FORMATS,
 521                 },
 522                 .ops = &tas2770_dai_ops,
 523                 .symmetric_rate = 1,
 524         },
 525 };
 526
 527 static int tas2770_codec_probe(struct snd_soc_component *component)
 528 {
 529         struct tas2770_priv *tas2770 =
 530                         snd_soc_component_get_drvdata(component);
 531
 532         tas2770->component = component;
 533
 534         if (tas2770->sdz_gpio) {
 535                 gpiod_set_value_cansleep(tas2770->sdz_gpio, 1);
 536                 usleep_range(1000, 2000);
 537         }
 538
 539         tas2770_reset(tas2770);
 540
 541         return 0;
 542 }
 543
 544 static DECLARE_TLV_DB_SCALE(tas2770_digital_tlv, 1100, 50, 0);
 545 static DECLARE_TLV_DB_SCALE(tas2770_playback_volume, -12750, 50, 0);
 546
 547 static const struct snd_kcontrol_new tas2770_snd_controls[] = {
 548         SOC_SINGLE_TLV("Speaker Playback Volume", TAS2770_PLAY_CFG_REG2,
 549                        0, TAS2770_PLAY_CFG_REG2_VMAX, 1, tas2770_playback_volume),
 550         SOC_SINGLE_TLV("Amp Gain Volume", TAS2770_PLAY_CFG_REG0, 0, 0x14, 0,
 551                        tas2770_digital_tlv),
 552 };
 553
 554 static const struct snd_soc_component_driver soc_component_driver_tas2770 = {
 555         .probe                  = tas2770_codec_probe,
 556         .suspend                = tas2770_codec_suspend,
 557         .resume                 = tas2770_codec_resume,
 558         .set_bias_level = tas2770_set_bias_level,
 559         .controls               = tas2770_snd_controls,
 560         .num_controls           = ARRAY_SIZE(tas2770_snd_controls),
 561         .dapm_widgets           = tas2770_dapm_widgets,
 562         .num_dapm_widgets       = ARRAY_SIZE(tas2770_dapm_widgets),
 563         .dapm_routes            = tas2770_audio_map,
 564         .num_dapm_routes        = ARRAY_SIZE(tas2770_audio_map),
 565         .idle_bias_on           = 1,
 566         .endianness             = 1,
 567         .non_legacy_dai_naming  = 1,
 568 };
 569
 570 static int tas2770_register_codec(struct tas2770_priv *tas2770)
 571 {
 572         return devm_snd_soc_register_component(tas2770->dev,
 573                 &soc_component_driver_tas2770,
 574                 tas2770_dai_driver, ARRAY_SIZE(tas2770_dai_driver));
 575 }
 576
 577 static const struct reg_default tas2770_reg_defaults[] = {
 578         { TAS2770_PAGE, 0x00 },
 579         { TAS2770_SW_RST, 0x00 },
 580         { TAS2770_PWR_CTRL, 0x0e },
 581         { TAS2770_PLAY_CFG_REG0, 0x10 },
 582         { TAS2770_PLAY_CFG_REG1, 0x01 },
 583         { TAS2770_PLAY_CFG_REG2, 0x00 },
 584         { TAS2770_MSC_CFG_REG0, 0x07 },
 585         { TAS2770_TDM_CFG_REG1, 0x02 },
 586         { TAS2770_TDM_CFG_REG2, 0x0a },
 587         { TAS2770_TDM_CFG_REG3, 0x10 },
 588         { TAS2770_INT_MASK_REG0, 0xfc },
 589         { TAS2770_INT_MASK_REG1, 0xb1 },
 590         { TAS2770_INT_CFG, 0x05 },
 591         { TAS2770_MISC_IRQ, 0x81 },
 592         { TAS2770_CLK_CGF, 0x0c },
 593
 594 };
 595
 596 static bool tas2770_volatile(struct device *dev, unsigned int reg)
 597 {
 598         switch (reg) {
 599         case TAS2770_PAGE: /* regmap implementation requires this */
 600         case TAS2770_SW_RST: /* always clears after write */
 601         case TAS2770_BO_PRV_REG0:/* has a self clearing bit */
 602         case TAS2770_LVE_INT_REG0:
 603         case TAS2770_LVE_INT_REG1:
 604         case TAS2770_LAT_INT_REG0:/* Sticky interrupt flags */
 605         case TAS2770_LAT_INT_REG1:/* Sticky interrupt flags */
 606         case TAS2770_VBAT_MSB:
 607         case TAS2770_VBAT_LSB:
 608         case TAS2770_TEMP_MSB:
 609         case TAS2770_TEMP_LSB:
 610                 return true;
 611         }
 612
 613         return false;
 614 }
 615
 616 static bool tas2770_writeable(struct device *dev, unsigned int reg)
 617 {
 618         switch (reg) {
 619         case TAS2770_LVE_INT_REG0:
 620         case TAS2770_LVE_INT_REG1:
 621         case TAS2770_LAT_INT_REG0:
 622         case TAS2770_LAT_INT_REG1:
 623         case TAS2770_VBAT_MSB:
 624         case TAS2770_VBAT_LSB:
 625         case TAS2770_TEMP_MSB:
 626         case TAS2770_TEMP_LSB:
 627         case TAS2770_TDM_CLK_DETC:
 628         case TAS2770_REV_AND_GPID:
 629                 return false;
 630         }
 631
 632         return true;
 633 }
 634
 635 static const struct regmap_range_cfg tas2770_regmap_ranges[] = {
 636         {
 637                 .range_min = 0,
 638                 .range_max = 1 * 128,
 639                 .selector_reg = TAS2770_PAGE,
 640                 .selector_mask = 0xff,
 641                 .selector_shift = 0,
 642                 .window_start = 0,
 643                 .window_len = 128,
 644         },
 645 };
 646
 647 static const struct regmap_config tas2770_i2c_regmap = {
 648         .reg_bits = 8,
 649         .val_bits = 8,
 650         .writeable_reg = tas2770_writeable,
 651         .volatile_reg = tas2770_volatile,
 652         .reg_defaults = tas2770_reg_defaults,
 653         .num_reg_defaults = ARRAY_SIZE(tas2770_reg_defaults),
 654         .cache_type = REGCACHE_RBTREE,
 655         .ranges = tas2770_regmap_ranges,
 656         .num_ranges = ARRAY_SIZE(tas2770_regmap_ranges),
 657         .max_register = 1 * 128,
 658 };
 659
 660 static int tas2770_parse_dt(struct device *dev, struct tas2770_priv *tas2770)
 661 {
 662         int rc = 0;
 663
 664         rc = fwnode_property_read_u32(dev->fwnode, "ti,imon-slot-no",
 665                                       &tas2770->i_sense_slot);
 666         if (rc) {
 667                 dev_info(tas2770->dev, "Property %s is missing setting default slot\n",
 668                          "ti,imon-slot-no");
 669
 670                 tas2770->i_sense_slot = 0;
 671         }
 672
 673         rc = fwnode_property_read_u32(dev->fwnode, "ti,vmon-slot-no",
 674                                       &tas2770->v_sense_slot);
 675         if (rc) {
 676                 dev_info(tas2770->dev, "Property %s is missing setting default slot\n",
 677                          "ti,vmon-slot-no");
 678
 679                 tas2770->v_sense_slot = 2;
 680         }
 681
 682         tas2770->sdz_gpio = devm_gpiod_get_optional(dev, "shutdown", GPIOD_OUT_HIGH);
 683         if (IS_ERR(tas2770->sdz_gpio)) {
 684                 if (PTR_ERR(tas2770->sdz_gpio) == -EPROBE_DEFER)
 685                         return -EPROBE_DEFER;
 686
 687                 tas2770->sdz_gpio = NULL;
 688         }
 689
 690         return 0;
 691 }
 692
 693 static int tas2770_i2c_probe(struct i2c_client *client,
 694                         const struct i2c_device_id *id)
 695 {
 696         struct tas2770_priv *tas2770;
 697         int result;
 698
 699         tas2770 = devm_kzalloc(&client->dev, sizeof(struct tas2770_priv),
 700                                GFP_KERNEL);
 701         if (!tas2770)
 702                 return -ENOMEM;
 703
 704         tas2770->dev = &client->dev;
 705         i2c_set_clientdata(client, tas2770);
 706         dev_set_drvdata(&client->dev, tas2770);
 707
 708         tas2770->regmap = devm_regmap_init_i2c(client, &tas2770_i2c_regmap);
 709         if (IS_ERR(tas2770->regmap)) {
 710                 result = PTR_ERR(tas2770->regmap);
 711                 dev_err(&client->dev, "Failed to allocate register map: %d\n",
 712                         result);
 713                 return result;
 714         }
 715
 716         if (client->dev.of_node) {
 717                 result = tas2770_parse_dt(&client->dev, tas2770);
 718                 if (result) {
 719                         dev_err(tas2770->dev, "%s: Failed to parse devicetree\n",
 720                                 __func__);
 721                         return result;
 722                 }
 723         }
 724
 725         tas2770->reset_gpio = devm_gpiod_get_optional(tas2770->dev, "reset",
 726                                                       GPIOD_OUT_HIGH);
 727         if (IS_ERR(tas2770->reset_gpio)) {
 728                 if (PTR_ERR(tas2770->reset_gpio) == -EPROBE_DEFER) {
 729                         tas2770->reset_gpio = NULL;
 730                         return -EPROBE_DEFER;
 731                 }
 732         }
 733
 734         result = tas2770_register_codec(tas2770);
 735         if (result)
 736                 dev_err(tas2770->dev, "Register codec failed.\n");
 737
 738         return result;
 739 }
 740
 741 static const struct i2c_device_id tas2770_i2c_id[] = {
 742         { "tas2770", 0},
 743         { }
 744 };
 745 MODULE_DEVICE_TABLE(i2c, tas2770_i2c_id);
 746
 747 #if defined(CONFIG_OF)
 748 static const struct of_device_id tas2770_of_match[] = {
 749         { .compatible = "ti,tas2770" },
 750         {},
 751 };
 752 MODULE_DEVICE_TABLE(of, tas2770_of_match);
 753 #endif
 754
 755 static struct i2c_driver tas2770_i2c_driver = {
 756         .driver = {
 757                 .name   = "tas2770",
 758                 .of_match_table = of_match_ptr(tas2770_of_match),
 759         },
 760         .probe      = tas2770_i2c_probe,
 761         .id_table   = tas2770_i2c_id,
 762 };
 763 module_i2c_driver(tas2770_i2c_driver);
 764
 765 MODULE_AUTHOR("Shi Fu <shifu0704@thundersoft.com>");
 766 MODULE_DESCRIPTION("TAS2770 I2C Smart Amplifier driver");
 767 MODULE_LICENSE("GPL v2");