sound/soc/codecs/tas2552.c

   1 /*
   2  * tas2552.c - ALSA SoC Texas Instruments TAS2552 Mono Audio Amplifier
   3  *
   4  * Copyright (C) 2014 Texas Instruments Incorporated -  http://www.ti.com
   5  *
   6  * Author: Dan Murphy <dmurphy@ti.com>
   7  *
   8  * This program is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU General Public License
  10  * version 2 as published by the Free Software Foundation.
  11  *
  12  * This program is distributed in the hope that it will be useful, but
  13  * WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * General Public License for more details.
  16  */
  17
  18 #include <linux/module.h>
  19 #include <linux/errno.h>
  20 #include <linux/device.h>
  21 #include <linux/i2c.h>
  22 #include <linux/gpio.h>
  23 #include <linux/of_gpio.h>
  24 #include <linux/pm_runtime.h>
  25 #include <linux/regmap.h>
  26 #include <linux/slab.h>
  27
  28 #include <linux/gpio/consumer.h>
  29 #include <linux/regulator/consumer.h>
  30
  31 #include <sound/pcm.h>
  32 #include <sound/pcm_params.h>
  33 #include <sound/soc.h>
  34 #include <sound/soc-dapm.h>
  35 #include <sound/tlv.h>
  36 #include <sound/tas2552-plat.h>
  37 #include <dt-bindings/sound/tas2552.h>
  38
  39 #include "tas2552.h"
  40
  41 static const struct reg_default tas2552_reg_defs[] = {
  42         {TAS2552_CFG_1, 0x22},
  43         {TAS2552_CFG_3, 0x80},
  44         {TAS2552_DOUT, 0x00},
  45         {TAS2552_OUTPUT_DATA, 0xc0},
  46         {TAS2552_PDM_CFG, 0x01},
  47         {TAS2552_PGA_GAIN, 0x00},
  48         {TAS2552_BOOST_APT_CTRL, 0x0f},
  49         {TAS2552_RESERVED_0D, 0xbe},
  50         {TAS2552_LIMIT_RATE_HYS, 0x08},
  51         {TAS2552_CFG_2, 0xef},
  52         {TAS2552_SER_CTRL_1, 0x00},
  53         {TAS2552_SER_CTRL_2, 0x00},
  54         {TAS2552_PLL_CTRL_1, 0x10},
  55         {TAS2552_PLL_CTRL_2, 0x00},
  56         {TAS2552_PLL_CTRL_3, 0x00},
  57         {TAS2552_BTIP, 0x8f},
  58         {TAS2552_BTS_CTRL, 0x80},
  59         {TAS2552_LIMIT_RELEASE, 0x04},
  60         {TAS2552_LIMIT_INT_COUNT, 0x00},
  61         {TAS2552_EDGE_RATE_CTRL, 0x40},
  62         {TAS2552_VBAT_DATA, 0x00},
  63 };
  64
  65 #define TAS2552_NUM_SUPPLIES    3
  66 static const char *tas2552_supply_names[TAS2552_NUM_SUPPLIES] = {
  67         "vbat",         /* vbat voltage */
  68         "iovdd",        /* I/O Voltage */
  69         "avdd",         /* Analog DAC Voltage */
  70 };
  71
  72 struct tas2552_data {
  73         struct snd_soc_component *component;
  74         struct regmap *regmap;
  75         struct i2c_client *tas2552_client;
  76         struct regulator_bulk_data supplies[TAS2552_NUM_SUPPLIES];
  77         struct gpio_desc *enable_gpio;
  78         unsigned char regs[TAS2552_VBAT_DATA];
  79         unsigned int pll_clkin;
  80         int pll_clk_id;
  81         unsigned int pdm_clk;
  82         int pdm_clk_id;
  83
  84         unsigned int dai_fmt;
  85         unsigned int tdm_delay;
  86 };
  87
  88 static int tas2552_post_event(struct snd_soc_dapm_widget *w,
  89                               struct snd_kcontrol *kcontrol, int event)
  90 {
  91         struct snd_soc_component *component = snd_soc_dapm_to_component(w->dapm);
  92
  93         switch (event) {
  94         case SND_SOC_DAPM_POST_PMU:
  95                 snd_soc_component_write(component, TAS2552_RESERVED_0D, 0xc0);
  96                 snd_soc_component_update_bits(component, TAS2552_LIMIT_RATE_HYS, (1 << 5),
  97                                     (1 << 5));
  98                 snd_soc_component_update_bits(component, TAS2552_CFG_2, 1, 0);
  99                 snd_soc_component_update_bits(component, TAS2552_CFG_1, TAS2552_SWS, 0);
 100                 break;
 101         case SND_SOC_DAPM_POST_PMD:
 102                 snd_soc_component_update_bits(component, TAS2552_CFG_1, TAS2552_SWS,
 103                                     TAS2552_SWS);
 104                 snd_soc_component_update_bits(component, TAS2552_CFG_2, 1, 1);
 105                 snd_soc_component_update_bits(component, TAS2552_LIMIT_RATE_HYS, (1 << 5), 0);
 106                 snd_soc_component_write(component, TAS2552_RESERVED_0D, 0xbe);
 107                 break;
 108         }
 109         return 0;
 110 }
 111
 112 /* Input mux controls */
 113 static const char * const tas2552_input_texts[] = {
 114         "Digital", "Analog" };
 115 static SOC_ENUM_SINGLE_DECL(tas2552_input_mux_enum, TAS2552_CFG_3, 7,
 116                             tas2552_input_texts);
 117
 118 static const struct snd_kcontrol_new tas2552_input_mux_control =
 119         SOC_DAPM_ENUM("Route", tas2552_input_mux_enum);
 120
 121 static const struct snd_soc_dapm_widget tas2552_dapm_widgets[] =
 122 {
 123         SND_SOC_DAPM_INPUT("IN"),
 124
 125         /* MUX Controls */
 126         SND_SOC_DAPM_MUX("Input selection", SND_SOC_NOPM, 0, 0,
 127                          &tas2552_input_mux_control),
 128
 129         SND_SOC_DAPM_AIF_IN("DAC IN", "DAC Playback", 0, SND_SOC_NOPM, 0, 0),
 130         SND_SOC_DAPM_DAC("DAC", NULL, SND_SOC_NOPM, 0, 0),
 131         SND_SOC_DAPM_OUT_DRV("ClassD", TAS2552_CFG_2, 7, 0, NULL, 0),
 132         SND_SOC_DAPM_SUPPLY("PLL", TAS2552_CFG_2, 3, 0, NULL, 0),
 133         SND_SOC_DAPM_POST("Post Event", tas2552_post_event),
 134
 135         SND_SOC_DAPM_OUTPUT("OUT")
 136 };
 137
 138 static const struct snd_soc_dapm_route tas2552_audio_map[] = {
 139         {"DAC", NULL, "DAC IN"},
 140         {"Input selection", "Digital", "DAC"},
 141         {"Input selection", "Analog", "IN"},
 142         {"ClassD", NULL, "Input selection"},
 143         {"OUT", NULL, "ClassD"},
 144         {"ClassD", NULL, "PLL"},
 145 };
 146
 147 #ifdef CONFIG_PM
 148 static void tas2552_sw_shutdown(struct tas2552_data *tas2552, int sw_shutdown)
 149 {
 150         u8 cfg1_reg = 0;
 151
 152         if (!tas2552->component)
 153                 return;
 154
 155         if (sw_shutdown)
 156                 cfg1_reg = TAS2552_SWS;
 157
 158         snd_soc_component_update_bits(tas2552->component, TAS2552_CFG_1, TAS2552_SWS,
 159                             cfg1_reg);
 160 }
 161 #endif
 162
 163 static int tas2552_setup_pll(struct snd_soc_component *component,
 164                              struct snd_pcm_hw_params *params)
 165 {
 166         struct tas2552_data *tas2552 = dev_get_drvdata(component->dev);
 167         bool bypass_pll = false;
 168         unsigned int pll_clk = params_rate(params) * 512;
 169         unsigned int pll_clkin = tas2552->pll_clkin;
 170         u8 pll_enable;
 171
 172         if (!pll_clkin) {
 173                 if (tas2552->pll_clk_id != TAS2552_PLL_CLKIN_BCLK)
 174                         return -EINVAL;
 175
 176                 pll_clkin = snd_soc_params_to_bclk(params);
 177                 pll_clkin += tas2552->tdm_delay;
 178         }
 179
 180         pll_enable = snd_soc_component_read32(component, TAS2552_CFG_2) & TAS2552_PLL_ENABLE;
 181         snd_soc_component_update_bits(component, TAS2552_CFG_2, TAS2552_PLL_ENABLE, 0);
 182
 183         if (pll_clkin == pll_clk)
 184                 bypass_pll = true;
 185
 186         if (bypass_pll) {
 187                 /* By pass the PLL configuration */
 188                 snd_soc_component_update_bits(component, TAS2552_PLL_CTRL_2,
 189                                     TAS2552_PLL_BYPASS, TAS2552_PLL_BYPASS);
 190         } else {
 191                 /* Fill in the PLL control registers for J & D
 192                  * pll_clk = (.5 * pll_clkin * J.D) / 2^p
 193                  * Need to fill in J and D here based on incoming freq
 194                  */
 195                 unsigned int d, q, t;
 196                 u8 j;
 197                 u8 pll_sel = (tas2552->pll_clk_id << 3) & TAS2552_PLL_SRC_MASK;
 198                 u8 p = snd_soc_component_read32(component, TAS2552_PLL_CTRL_1);
 199
 200                 p = (p >> 7);
 201
 202 recalc:
 203                 t = (pll_clk * 2) << p;
 204                 j = t / pll_clkin;
 205                 d = t % pll_clkin;
 206                 t = pll_clkin / 10000;
 207                 q = d / (t + 1);
 208                 d = q + ((9999 - pll_clkin % 10000) * (d / t - q)) / 10000;
 209
 210                 if (d && (pll_clkin < 512000 || pll_clkin > 9200000)) {
 211                         if (tas2552->pll_clk_id == TAS2552_PLL_CLKIN_BCLK) {
 212                                 pll_clkin = 1800000;
 213                                 pll_sel = (TAS2552_PLL_CLKIN_1_8_FIXED << 3) &
 214                                                         TAS2552_PLL_SRC_MASK;
 215                         } else {
 216                                 pll_clkin = snd_soc_params_to_bclk(params);
 217                                 pll_clkin += tas2552->tdm_delay;
 218                                 pll_sel = (TAS2552_PLL_CLKIN_BCLK << 3) &
 219                                                         TAS2552_PLL_SRC_MASK;
 220                         }
 221                         goto recalc;
 222                 }
 223
 224                 snd_soc_component_update_bits(component, TAS2552_CFG_1, TAS2552_PLL_SRC_MASK,
 225                                     pll_sel);
 226
 227                 snd_soc_component_update_bits(component, TAS2552_PLL_CTRL_1,
 228                                     TAS2552_PLL_J_MASK, j);
 229                 /* Will clear the PLL_BYPASS bit */
 230                 snd_soc_component_write(component, TAS2552_PLL_CTRL_2,
 231                               TAS2552_PLL_D_UPPER(d));
 232                 snd_soc_component_write(component, TAS2552_PLL_CTRL_3,
 233                               TAS2552_PLL_D_LOWER(d));
 234         }
 235
 236         /* Restore PLL status */
 237         snd_soc_component_update_bits(component, TAS2552_CFG_2, TAS2552_PLL_ENABLE,
 238                             pll_enable);
 239
 240         return 0;
 241 }
 242
 243 static int tas2552_hw_params(struct snd_pcm_substream *substream,
 244                              struct snd_pcm_hw_params *params,
 245                              struct snd_soc_dai *dai)
 246 {
 247         struct snd_soc_component *component = dai->component;
 248         struct tas2552_data *tas2552 = dev_get_drvdata(component->dev);
 249         int cpf;
 250         u8 ser_ctrl1_reg, wclk_rate;
 251
 252         switch (params_width(params)) {
 253         case 16:
 254                 ser_ctrl1_reg = TAS2552_WORDLENGTH_16BIT;
 255                 cpf = 32 + tas2552->tdm_delay;
 256                 break;
 257         case 20:
 258                 ser_ctrl1_reg = TAS2552_WORDLENGTH_20BIT;
 259                 cpf = 64 + tas2552->tdm_delay;
 260                 break;
 261         case 24:
 262                 ser_ctrl1_reg = TAS2552_WORDLENGTH_24BIT;
 263                 cpf = 64 + tas2552->tdm_delay;
 264                 break;
 265         case 32:
 266                 ser_ctrl1_reg = TAS2552_WORDLENGTH_32BIT;
 267                 cpf = 64 + tas2552->tdm_delay;
 268                 break;
 269         default:
 270                 dev_err(component->dev, "Not supported sample size: %d\n",
 271                         params_width(params));
 272                 return -EINVAL;
 273         }
 274
 275         if (cpf <= 32)
 276                 ser_ctrl1_reg |= TAS2552_CLKSPERFRAME_32;
 277         else if (cpf <= 64)
 278                 ser_ctrl1_reg |= TAS2552_CLKSPERFRAME_64;
 279         else if (cpf <= 128)
 280                 ser_ctrl1_reg |= TAS2552_CLKSPERFRAME_128;
 281         else
 282                 ser_ctrl1_reg |= TAS2552_CLKSPERFRAME_256;
 283
 284         snd_soc_component_update_bits(component, TAS2552_SER_CTRL_1,
 285                             TAS2552_WORDLENGTH_MASK | TAS2552_CLKSPERFRAME_MASK,
 286                             ser_ctrl1_reg);
 287
 288         switch (params_rate(params)) {
 289         case 8000:
 290                 wclk_rate = TAS2552_WCLK_FREQ_8KHZ;
 291                 break;
 292         case 11025:
 293         case 12000:
 294                 wclk_rate = TAS2552_WCLK_FREQ_11_12KHZ;
 295                 break;
 296         case 16000:
 297                 wclk_rate = TAS2552_WCLK_FREQ_16KHZ;
 298                 break;
 299         case 22050:
 300         case 24000:
 301                 wclk_rate = TAS2552_WCLK_FREQ_22_24KHZ;
 302                 break;
 303         case 32000:
 304                 wclk_rate = TAS2552_WCLK_FREQ_32KHZ;
 305                 break;
 306         case 44100:
 307         case 48000:
 308                 wclk_rate = TAS2552_WCLK_FREQ_44_48KHZ;
 309                 break;
 310         case 88200:
 311         case 96000:
 312                 wclk_rate = TAS2552_WCLK_FREQ_88_96KHZ;
 313                 break;
 314         case 176400:
 315         case 192000:
 316                 wclk_rate = TAS2552_WCLK_FREQ_176_192KHZ;
 317                 break;
 318         default:
 319                 dev_err(component->dev, "Not supported sample rate: %d\n",
 320                         params_rate(params));
 321                 return -EINVAL;
 322         }
 323
 324         snd_soc_component_update_bits(component, TAS2552_CFG_3, TAS2552_WCLK_FREQ_MASK,
 325                             wclk_rate);
 326
 327         return tas2552_setup_pll(component, params);
 328 }
 329
 330 #define TAS2552_DAI_FMT_MASK    (TAS2552_BCLKDIR | \
 331                                  TAS2552_WCLKDIR | \
 332                                  TAS2552_DATAFORMAT_MASK)
 333 static int tas2552_prepare(struct snd_pcm_substream *substream,
 334                            struct snd_soc_dai *dai)
 335 {
 336         struct snd_soc_component *component = dai->component;
 337         struct tas2552_data *tas2552 = snd_soc_component_get_drvdata(component);
 338         int delay = 0;
 339
 340         /* TDM slot selection only valid in DSP_A/_B mode */
 341         if (tas2552->dai_fmt == SND_SOC_DAIFMT_DSP_A)
 342                 delay += (tas2552->tdm_delay + 1);
 343         else if (tas2552->dai_fmt == SND_SOC_DAIFMT_DSP_B)
 344                 delay += tas2552->tdm_delay;
 345
 346         /* Configure data delay */
 347         snd_soc_component_write(component, TAS2552_SER_CTRL_2, delay);
 348
 349         return 0;
 350 }
 351
 352 static int tas2552_set_dai_fmt(struct snd_soc_dai *dai, unsigned int fmt)
 353 {
 354         struct snd_soc_component *component = dai->component;
 355         struct tas2552_data *tas2552 = dev_get_drvdata(component->dev);
 356         u8 serial_format;
 357
 358         switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
 359         case SND_SOC_DAIFMT_CBS_CFS:
 360                 serial_format = 0x00;
 361                 break;
 362         case SND_SOC_DAIFMT_CBS_CFM:
 363                 serial_format = TAS2552_WCLKDIR;
 364                 break;
 365         case SND_SOC_DAIFMT_CBM_CFS:
 366                 serial_format = TAS2552_BCLKDIR;
 367                 break;
 368         case SND_SOC_DAIFMT_CBM_CFM:
 369                 serial_format = (TAS2552_BCLKDIR | TAS2552_WCLKDIR);
 370                 break;
 371         default:
 372                 dev_vdbg(component->dev, "DAI Format master is not found\n");
 373                 return -EINVAL;
 374         }
 375
 376         switch (fmt & (SND_SOC_DAIFMT_FORMAT_MASK |
 377                        SND_SOC_DAIFMT_INV_MASK)) {
 378         case (SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF):
 379                 break;
 380         case (SND_SOC_DAIFMT_DSP_A | SND_SOC_DAIFMT_IB_NF):
 381         case (SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_IB_NF):
 382                 serial_format |= TAS2552_DATAFORMAT_DSP;
 383                 break;
 384         case (SND_SOC_DAIFMT_RIGHT_J | SND_SOC_DAIFMT_NB_NF):
 385                 serial_format |= TAS2552_DATAFORMAT_RIGHT_J;
 386                 break;
 387         case (SND_SOC_DAIFMT_LEFT_J | SND_SOC_DAIFMT_NB_NF):
 388                 serial_format |= TAS2552_DATAFORMAT_LEFT_J;
 389                 break;
 390         default:
 391                 dev_vdbg(component->dev, "DAI Format is not found\n");
 392                 return -EINVAL;
 393         }
 394         tas2552->dai_fmt = fmt & SND_SOC_DAIFMT_FORMAT_MASK;
 395
 396         snd_soc_component_update_bits(component, TAS2552_SER_CTRL_1, TAS2552_DAI_FMT_MASK,
 397                             serial_format);
 398         return 0;
 399 }
 400
 401 static int tas2552_set_dai_sysclk(struct snd_soc_dai *dai, int clk_id,
 402                                   unsigned int freq, int dir)
 403 {
 404         struct snd_soc_component *component = dai->component;
 405         struct tas2552_data *tas2552 = dev_get_drvdata(component->dev);
 406         u8 reg, mask, val;
 407
 408         switch (clk_id) {
 409         case TAS2552_PLL_CLKIN_MCLK:
 410         case TAS2552_PLL_CLKIN_IVCLKIN:
 411                 if (freq < 512000 || freq > 24576000) {
 412                         /* out of range PLL_CLKIN, fall back to use BCLK */
 413                         dev_warn(component->dev, "Out of range PLL_CLKIN: %u\n",
 414                                  freq);
 415                         clk_id = TAS2552_PLL_CLKIN_BCLK;
 416                         freq = 0;
 417                 }
 418                 /* fall through */
 419         case TAS2552_PLL_CLKIN_BCLK:
 420         case TAS2552_PLL_CLKIN_1_8_FIXED:
 421                 mask = TAS2552_PLL_SRC_MASK;
 422                 val = (clk_id << 3) & mask; /* bit 4:5 in the register */
 423                 reg = TAS2552_CFG_1;
 424                 tas2552->pll_clk_id = clk_id;
 425                 tas2552->pll_clkin = freq;
 426                 break;
 427         case TAS2552_PDM_CLK_PLL:
 428         case TAS2552_PDM_CLK_IVCLKIN:
 429         case TAS2552_PDM_CLK_BCLK:
 430         case TAS2552_PDM_CLK_MCLK:
 431                 mask = TAS2552_PDM_CLK_SEL_MASK;
 432                 val = (clk_id >> 1) & mask; /* bit 0:1 in the register */
 433                 reg = TAS2552_PDM_CFG;
 434                 tas2552->pdm_clk_id = clk_id;
 435                 tas2552->pdm_clk = freq;
 436                 break;
 437         default:
 438                 dev_err(component->dev, "Invalid clk id: %d\n", clk_id);
 439                 return -EINVAL;
 440         }
 441
 442         snd_soc_component_update_bits(component, reg, mask, val);
 443
 444         return 0;
 445 }
 446
 447 static int tas2552_set_dai_tdm_slot(struct snd_soc_dai *dai,
 448                                     unsigned int tx_mask, unsigned int rx_mask,
 449                                     int slots, int slot_width)
 450 {
 451         struct snd_soc_component *component = dai->component;
 452         struct tas2552_data *tas2552 = snd_soc_component_get_drvdata(component);
 453         unsigned int lsb;
 454
 455         if (unlikely(!tx_mask)) {
 456                 dev_err(component->dev, "tx masks need to be non 0\n");
 457                 return -EINVAL;
 458         }
 459
 460         /* TDM based on DSP mode requires slots to be adjacent */
 461         lsb = __ffs(tx_mask);
 462         if ((lsb + 1) != __fls(tx_mask)) {
 463                 dev_err(component->dev, "Invalid mask, slots must be adjacent\n");
 464                 return -EINVAL;
 465         }
 466
 467         tas2552->tdm_delay = lsb * slot_width;
 468
 469         /* DOUT in high-impedance on inactive bit clocks */
 470         snd_soc_component_update_bits(component, TAS2552_DOUT,
 471                             TAS2552_SDOUT_TRISTATE, TAS2552_SDOUT_TRISTATE);
 472
 473         return 0;
 474 }
 475
 476 static int tas2552_mute(struct snd_soc_dai *dai, int mute)
 477 {
 478         u8 cfg1_reg = 0;
 479         struct snd_soc_component *component = dai->component;
 480
 481         if (mute)
 482                 cfg1_reg |= TAS2552_MUTE;
 483
 484         snd_soc_component_update_bits(component, TAS2552_CFG_1, TAS2552_MUTE, cfg1_reg);
 485
 486         return 0;
 487 }
 488
 489 #ifdef CONFIG_PM
 490 static int tas2552_runtime_suspend(struct device *dev)
 491 {
 492         struct tas2552_data *tas2552 = dev_get_drvdata(dev);
 493
 494         tas2552_sw_shutdown(tas2552, 1);
 495
 496         regcache_cache_only(tas2552->regmap, true);
 497         regcache_mark_dirty(tas2552->regmap);
 498
 499         gpiod_set_value(tas2552->enable_gpio, 0);
 500
 501         return 0;
 502 }
 503
 504 static int tas2552_runtime_resume(struct device *dev)
 505 {
 506         struct tas2552_data *tas2552 = dev_get_drvdata(dev);
 507
 508         gpiod_set_value(tas2552->enable_gpio, 1);
 509
 510         tas2552_sw_shutdown(tas2552, 0);
 511
 512         regcache_cache_only(tas2552->regmap, false);
 513         regcache_sync(tas2552->regmap);
 514
 515         return 0;
 516 }
 517 #endif
 518
 519 static const struct dev_pm_ops tas2552_pm = {
 520         SET_RUNTIME_PM_OPS(tas2552_runtime_suspend, tas2552_runtime_resume,
 521                            NULL)
 522 };
 523
 524 static const struct snd_soc_dai_ops tas2552_speaker_dai_ops = {
 525         .hw_params      = tas2552_hw_params,
 526         .prepare        = tas2552_prepare,
 527         .set_sysclk     = tas2552_set_dai_sysclk,
 528         .set_fmt        = tas2552_set_dai_fmt,
 529         .set_tdm_slot   = tas2552_set_dai_tdm_slot,
 530         .digital_mute = tas2552_mute,
 531 };
 532
 533 /* Formats supported by TAS2552 driver. */
 534 #define TAS2552_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\
 535                          SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE)
 536
 537 /* TAS2552 dai structure. */
 538 static struct snd_soc_dai_driver tas2552_dai[] = {
 539         {
 540                 .name = "tas2552-amplifier",
 541                 .playback = {
 542                         .stream_name = "Playback",
 543                         .channels_min = 2,
 544                         .channels_max = 2,
 545                         .rates = SNDRV_PCM_RATE_8000_192000,
 546                         .formats = TAS2552_FORMATS,
 547                 },
 548                 .ops = &tas2552_speaker_dai_ops,
 549         },
 550 };
 551
 552 /*
 553  * DAC digital volumes. From -7 to 24 dB in 1 dB steps
 554  */
 555 static DECLARE_TLV_DB_SCALE(dac_tlv, -700, 100, 0);
 556
 557 static const char * const tas2552_din_source_select[] = {
 558         "Muted",
 559         "Left",
 560         "Right",
 561         "Left + Right average",
 562 };
 563 static SOC_ENUM_SINGLE_DECL(tas2552_din_source_enum,
 564                             TAS2552_CFG_3, 3,
 565                             tas2552_din_source_select);
 566
 567 static const struct snd_kcontrol_new tas2552_snd_controls[] = {
 568         SOC_SINGLE_TLV("Speaker Driver Playback Volume",
 569                          TAS2552_PGA_GAIN, 0, 0x1f, 0, dac_tlv),
 570         SOC_ENUM("DIN source", tas2552_din_source_enum),
 571 };
 572
 573 static int tas2552_component_probe(struct snd_soc_component *component)
 574 {
 575         struct tas2552_data *tas2552 = snd_soc_component_get_drvdata(component);
 576         int ret;
 577
 578         tas2552->component = component;
 579
 580         ret = regulator_bulk_enable(ARRAY_SIZE(tas2552->supplies),
 581                                     tas2552->supplies);
 582
 583         if (ret != 0) {
 584                 dev_err(component->dev, "Failed to enable supplies: %d\n",
 585                         ret);
 586                 return ret;
 587         }
 588
 589         gpiod_set_value(tas2552->enable_gpio, 1);
 590
 591         ret = pm_runtime_get_sync(component->dev);
 592         if (ret < 0) {
 593                 dev_err(component->dev, "Enabling device failed: %d\n",
 594                         ret);
 595                 goto probe_fail;
 596         }
 597
 598         snd_soc_component_update_bits(component, TAS2552_CFG_1, TAS2552_MUTE, TAS2552_MUTE);
 599         snd_soc_component_write(component, TAS2552_CFG_3, TAS2552_I2S_OUT_SEL |
 600                                             TAS2552_DIN_SRC_SEL_AVG_L_R);
 601         snd_soc_component_write(component, TAS2552_OUTPUT_DATA,
 602                       TAS2552_PDM_DATA_SEL_V_I |
 603                       TAS2552_R_DATA_OUT(TAS2552_DATA_OUT_V_DATA));
 604         snd_soc_component_write(component, TAS2552_BOOST_APT_CTRL, TAS2552_APT_DELAY_200 |
 605                                                      TAS2552_APT_THRESH_20_17);
 606
 607         snd_soc_component_write(component, TAS2552_CFG_2, TAS2552_BOOST_EN | TAS2552_APT_EN |
 608                                             TAS2552_LIM_EN);
 609
 610         return 0;
 611
 612 probe_fail:
 613         gpiod_set_value(tas2552->enable_gpio, 0);
 614
 615         regulator_bulk_disable(ARRAY_SIZE(tas2552->supplies),
 616                                         tas2552->supplies);
 617         return ret;
 618 }
 619
 620 static void tas2552_component_remove(struct snd_soc_component *component)
 621 {
 622         struct tas2552_data *tas2552 = snd_soc_component_get_drvdata(component);
 623
 624         pm_runtime_put(component->dev);
 625
 626         gpiod_set_value(tas2552->enable_gpio, 0);
 627 };
 628
 629 #ifdef CONFIG_PM
 630 static int tas2552_suspend(struct snd_soc_component *component)
 631 {
 632         struct tas2552_data *tas2552 = snd_soc_component_get_drvdata(component);
 633         int ret;
 634
 635         ret = regulator_bulk_disable(ARRAY_SIZE(tas2552->supplies),
 636                                         tas2552->supplies);
 637
 638         if (ret != 0)
 639                 dev_err(component->dev, "Failed to disable supplies: %d\n",
 640                         ret);
 641         return ret;
 642 }
 643
 644 static int tas2552_resume(struct snd_soc_component *component)
 645 {
 646         struct tas2552_data *tas2552 = snd_soc_component_get_drvdata(component);
 647         int ret;
 648
 649         ret = regulator_bulk_enable(ARRAY_SIZE(tas2552->supplies),
 650                                     tas2552->supplies);
 651
 652         if (ret != 0) {
 653                 dev_err(component->dev, "Failed to enable supplies: %d\n",
 654                         ret);
 655         }
 656
 657         return ret;
 658 }
 659 #else
 660 #define tas2552_suspend NULL
 661 #define tas2552_resume NULL
 662 #endif
 663
 664 static const struct snd_soc_component_driver soc_component_dev_tas2552 = {
 665         .probe                  = tas2552_component_probe,
 666         .remove                 = tas2552_component_remove,
 667         .suspend                = tas2552_suspend,
 668         .resume                 = tas2552_resume,
 669         .controls               = tas2552_snd_controls,
 670         .num_controls           = ARRAY_SIZE(tas2552_snd_controls),
 671         .dapm_widgets           = tas2552_dapm_widgets,
 672         .num_dapm_widgets       = ARRAY_SIZE(tas2552_dapm_widgets),
 673         .dapm_routes            = tas2552_audio_map,
 674         .num_dapm_routes        = ARRAY_SIZE(tas2552_audio_map),
 675         .idle_bias_on           = 1,
 676         .endianness             = 1,
 677         .non_legacy_dai_naming  = 1,
 678 };
 679
 680 static const struct regmap_config tas2552_regmap_config = {
 681         .reg_bits = 8,
 682         .val_bits = 8,
 683
 684         .max_register = TAS2552_MAX_REG,
 685         .reg_defaults = tas2552_reg_defs,
 686         .num_reg_defaults = ARRAY_SIZE(tas2552_reg_defs),
 687         .cache_type = REGCACHE_RBTREE,
 688 };
 689
 690 static int tas2552_probe(struct i2c_client *client,
 691                            const struct i2c_device_id *id)
 692 {
 693         struct device *dev;
 694         struct tas2552_data *data;
 695         int ret;
 696         int i;
 697
 698         dev = &client->dev;
 699         data = devm_kzalloc(&client->dev, sizeof(*data), GFP_KERNEL);
 700         if (data == NULL)
 701                 return -ENOMEM;
 702
 703         data->enable_gpio = devm_gpiod_get_optional(dev, "enable",
 704                                                     GPIOD_OUT_LOW);
 705         if (IS_ERR(data->enable_gpio))
 706                 return PTR_ERR(data->enable_gpio);
 707
 708         data->tas2552_client = client;
 709         data->regmap = devm_regmap_init_i2c(client, &tas2552_regmap_config);
 710         if (IS_ERR(data->regmap)) {
 711                 ret = PTR_ERR(data->regmap);
 712                 dev_err(&client->dev, "Failed to allocate register map: %d\n",
 713                         ret);
 714                 return ret;
 715         }
 716
 717         for (i = 0; i < ARRAY_SIZE(data->supplies); i++)
 718                 data->supplies[i].supply = tas2552_supply_names[i];
 719
 720         ret = devm_regulator_bulk_get(dev, ARRAY_SIZE(data->supplies),
 721                                       data->supplies);
 722         if (ret != 0) {
 723                 dev_err(dev, "Failed to request supplies: %d\n", ret);
 724                 return ret;
 725         }
 726
 727         pm_runtime_set_active(&client->dev);
 728         pm_runtime_set_autosuspend_delay(&client->dev, 1000);
 729         pm_runtime_use_autosuspend(&client->dev);
 730         pm_runtime_enable(&client->dev);
 731         pm_runtime_mark_last_busy(&client->dev);
 732         pm_runtime_put_sync_autosuspend(&client->dev);
 733
 734         dev_set_drvdata(&client->dev, data);
 735
 736         ret = devm_snd_soc_register_component(&client->dev,
 737                                       &soc_component_dev_tas2552,
 738                                       tas2552_dai, ARRAY_SIZE(tas2552_dai));
 739         if (ret < 0)
 740                 dev_err(&client->dev, "Failed to register component: %d\n", ret);
 741
 742         return ret;
 743 }
 744
 745 static int tas2552_i2c_remove(struct i2c_client *client)
 746 {
 747         pm_runtime_disable(&client->dev);
 748         return 0;
 749 }
 750
 751 static const struct i2c_device_id tas2552_id[] = {
 752         { "tas2552", 0 },
 753         { }
 754 };
 755 MODULE_DEVICE_TABLE(i2c, tas2552_id);
 756
 757 #if IS_ENABLED(CONFIG_OF)
 758 static const struct of_device_id tas2552_of_match[] = {
 759         { .compatible = "ti,tas2552", },
 760         {},
 761 };
 762 MODULE_DEVICE_TABLE(of, tas2552_of_match);
 763 #endif
 764
 765 static struct i2c_driver tas2552_i2c_driver = {
 766         .driver = {
 767                 .name = "tas2552",
 768                 .of_match_table = of_match_ptr(tas2552_of_match),
 769                 .pm = &tas2552_pm,
 770         },
 771         .probe = tas2552_probe,
 772         .remove = tas2552_i2c_remove,
 773         .id_table = tas2552_id,
 774 };
 775
 776 module_i2c_driver(tas2552_i2c_driver);
 777
 778 MODULE_AUTHOR("Dan Muprhy <dmurphy@ti.com>");
 779 MODULE_DESCRIPTION("TAS2552 Audio amplifier driver");
 780 MODULE_LICENSE("GPL");