drivers/mfd/arizona-core.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * Arizona core driver
   4  *
   5  * Copyright 2012 Wolfson Microelectronics plc
   6  *
   7  * Author: Mark Brown <broonie@opensource.wolfsonmicro.com>
   8  */
   9
  10 #include <linux/clk.h>
  11 #include <linux/delay.h>
  12 #include <linux/err.h>
  13 #include <linux/gpio/consumer.h>
  14 #include <linux/interrupt.h>
  15 #include <linux/mfd/core.h>
  16 #include <linux/module.h>
  17 #include <linux/of.h>
  18 #include <linux/of_device.h>
  19 #include <linux/pm_runtime.h>
  20 #include <linux/regmap.h>
  21 #include <linux/regulator/consumer.h>
  22 #include <linux/regulator/machine.h>
  23 #include <linux/slab.h>
  24 #include <linux/ktime.h>
  25 #include <linux/platform_device.h>
  26
  27 #include <linux/mfd/arizona/core.h>
  28 #include <linux/mfd/arizona/registers.h>
  29
  30 #include "arizona.h"
  31
  32 static const char * const wm5102_core_supplies[] = {
  33         "AVDD",
  34         "DBVDD1",
  35 };
  36
  37 int arizona_clk32k_enable(struct arizona *arizona)
  38 {
  39         int ret = 0;
  40
  41         mutex_lock(&arizona->clk_lock);
  42
  43         arizona->clk32k_ref++;
  44
  45         if (arizona->clk32k_ref == 1) {
  46                 switch (arizona->pdata.clk32k_src) {
  47                 case ARIZONA_32KZ_MCLK1:
  48                         ret = pm_runtime_get_sync(arizona->dev);
  49                         if (ret != 0)
  50                                 goto err_ref;
  51                         ret = clk_prepare_enable(arizona->mclk[ARIZONA_MCLK1]);
  52                         if (ret != 0) {
  53                                 pm_runtime_put_sync(arizona->dev);
  54                                 goto err_ref;
  55                         }
  56                         break;
  57                 case ARIZONA_32KZ_MCLK2:
  58                         ret = clk_prepare_enable(arizona->mclk[ARIZONA_MCLK2]);
  59                         if (ret != 0)
  60                                 goto err_ref;
  61                         break;
  62                 }
  63
  64                 ret = regmap_update_bits(arizona->regmap, ARIZONA_CLOCK_32K_1,
  65                                          ARIZONA_CLK_32K_ENA,
  66                                          ARIZONA_CLK_32K_ENA);
  67         }
  68
  69 err_ref:
  70         if (ret != 0)
  71                 arizona->clk32k_ref--;
  72
  73         mutex_unlock(&arizona->clk_lock);
  74
  75         return ret;
  76 }
  77 EXPORT_SYMBOL_GPL(arizona_clk32k_enable);
  78
  79 int arizona_clk32k_disable(struct arizona *arizona)
  80 {
  81         mutex_lock(&arizona->clk_lock);
  82
  83         WARN_ON(arizona->clk32k_ref <= 0);
  84
  85         arizona->clk32k_ref--;
  86
  87         if (arizona->clk32k_ref == 0) {
  88                 regmap_update_bits(arizona->regmap, ARIZONA_CLOCK_32K_1,
  89                                    ARIZONA_CLK_32K_ENA, 0);
  90
  91                 switch (arizona->pdata.clk32k_src) {
  92                 case ARIZONA_32KZ_MCLK1:
  93                         pm_runtime_put_sync(arizona->dev);
  94                         clk_disable_unprepare(arizona->mclk[ARIZONA_MCLK1]);
  95                         break;
  96                 case ARIZONA_32KZ_MCLK2:
  97                         clk_disable_unprepare(arizona->mclk[ARIZONA_MCLK2]);
  98                         break;
  99                 }
 100         }
 101
 102         mutex_unlock(&arizona->clk_lock);
 103
 104         return 0;
 105 }
 106 EXPORT_SYMBOL_GPL(arizona_clk32k_disable);
 107
 108 static irqreturn_t arizona_clkgen_err(int irq, void *data)
 109 {
 110         struct arizona *arizona = data;
 111
 112         dev_err(arizona->dev, "CLKGEN error\n");
 113
 114         return IRQ_HANDLED;
 115 }
 116
 117 static irqreturn_t arizona_underclocked(int irq, void *data)
 118 {
 119         struct arizona *arizona = data;
 120         unsigned int val;
 121         int ret;
 122
 123         ret = regmap_read(arizona->regmap, ARIZONA_INTERRUPT_RAW_STATUS_8,
 124                           &val);
 125         if (ret != 0) {
 126                 dev_err(arizona->dev, "Failed to read underclock status: %d\n",
 127                         ret);
 128                 return IRQ_NONE;
 129         }
 130
 131         if (val & ARIZONA_AIF3_UNDERCLOCKED_STS)
 132                 dev_err(arizona->dev, "AIF3 underclocked\n");
 133         if (val & ARIZONA_AIF2_UNDERCLOCKED_STS)
 134                 dev_err(arizona->dev, "AIF2 underclocked\n");
 135         if (val & ARIZONA_AIF1_UNDERCLOCKED_STS)
 136                 dev_err(arizona->dev, "AIF1 underclocked\n");
 137         if (val & ARIZONA_ISRC3_UNDERCLOCKED_STS)
 138                 dev_err(arizona->dev, "ISRC3 underclocked\n");
 139         if (val & ARIZONA_ISRC2_UNDERCLOCKED_STS)
 140                 dev_err(arizona->dev, "ISRC2 underclocked\n");
 141         if (val & ARIZONA_ISRC1_UNDERCLOCKED_STS)
 142                 dev_err(arizona->dev, "ISRC1 underclocked\n");
 143         if (val & ARIZONA_FX_UNDERCLOCKED_STS)
 144                 dev_err(arizona->dev, "FX underclocked\n");
 145         if (val & ARIZONA_ASRC_UNDERCLOCKED_STS)
 146                 dev_err(arizona->dev, "ASRC underclocked\n");
 147         if (val & ARIZONA_DAC_UNDERCLOCKED_STS)
 148                 dev_err(arizona->dev, "DAC underclocked\n");
 149         if (val & ARIZONA_ADC_UNDERCLOCKED_STS)
 150                 dev_err(arizona->dev, "ADC underclocked\n");
 151         if (val & ARIZONA_MIXER_UNDERCLOCKED_STS)
 152                 dev_err(arizona->dev, "Mixer dropped sample\n");
 153
 154         return IRQ_HANDLED;
 155 }
 156
 157 static irqreturn_t arizona_overclocked(int irq, void *data)
 158 {
 159         struct arizona *arizona = data;
 160         unsigned int val[3];
 161         int ret;
 162
 163         ret = regmap_bulk_read(arizona->regmap, ARIZONA_INTERRUPT_RAW_STATUS_6,
 164                                &val[0], 3);
 165         if (ret != 0) {
 166                 dev_err(arizona->dev, "Failed to read overclock status: %d\n",
 167                         ret);
 168                 return IRQ_NONE;
 169         }
 170
 171         switch (arizona->type) {
 172         case WM8998:
 173         case WM1814:
 174                 /* Some bits are shifted on WM8998,
 175                  * rearrange to match the standard bit layout
 176                  */
 177                 val[0] = ((val[0] & 0x60e0) >> 1) |
 178                          ((val[0] & 0x1e00) >> 2) |
 179                          (val[0] & 0x000f);
 180                 break;
 181         default:
 182                 break;
 183         }
 184
 185         if (val[0] & ARIZONA_PWM_OVERCLOCKED_STS)
 186                 dev_err(arizona->dev, "PWM overclocked\n");
 187         if (val[0] & ARIZONA_FX_CORE_OVERCLOCKED_STS)
 188                 dev_err(arizona->dev, "FX core overclocked\n");
 189         if (val[0] & ARIZONA_DAC_SYS_OVERCLOCKED_STS)
 190                 dev_err(arizona->dev, "DAC SYS overclocked\n");
 191         if (val[0] & ARIZONA_DAC_WARP_OVERCLOCKED_STS)
 192                 dev_err(arizona->dev, "DAC WARP overclocked\n");
 193         if (val[0] & ARIZONA_ADC_OVERCLOCKED_STS)
 194                 dev_err(arizona->dev, "ADC overclocked\n");
 195         if (val[0] & ARIZONA_MIXER_OVERCLOCKED_STS)
 196                 dev_err(arizona->dev, "Mixer overclocked\n");
 197         if (val[0] & ARIZONA_AIF3_SYNC_OVERCLOCKED_STS)
 198                 dev_err(arizona->dev, "AIF3 overclocked\n");
 199         if (val[0] & ARIZONA_AIF2_SYNC_OVERCLOCKED_STS)
 200                 dev_err(arizona->dev, "AIF2 overclocked\n");
 201         if (val[0] & ARIZONA_AIF1_SYNC_OVERCLOCKED_STS)
 202                 dev_err(arizona->dev, "AIF1 overclocked\n");
 203         if (val[0] & ARIZONA_PAD_CTRL_OVERCLOCKED_STS)
 204                 dev_err(arizona->dev, "Pad control overclocked\n");
 205
 206         if (val[1] & ARIZONA_SLIMBUS_SUBSYS_OVERCLOCKED_STS)
 207                 dev_err(arizona->dev, "Slimbus subsystem overclocked\n");
 208         if (val[1] & ARIZONA_SLIMBUS_ASYNC_OVERCLOCKED_STS)
 209                 dev_err(arizona->dev, "Slimbus async overclocked\n");
 210         if (val[1] & ARIZONA_SLIMBUS_SYNC_OVERCLOCKED_STS)
 211                 dev_err(arizona->dev, "Slimbus sync overclocked\n");
 212         if (val[1] & ARIZONA_ASRC_ASYNC_SYS_OVERCLOCKED_STS)
 213                 dev_err(arizona->dev, "ASRC async system overclocked\n");
 214         if (val[1] & ARIZONA_ASRC_ASYNC_WARP_OVERCLOCKED_STS)
 215                 dev_err(arizona->dev, "ASRC async WARP overclocked\n");
 216         if (val[1] & ARIZONA_ASRC_SYNC_SYS_OVERCLOCKED_STS)
 217                 dev_err(arizona->dev, "ASRC sync system overclocked\n");
 218         if (val[1] & ARIZONA_ASRC_SYNC_WARP_OVERCLOCKED_STS)
 219                 dev_err(arizona->dev, "ASRC sync WARP overclocked\n");
 220         if (val[1] & ARIZONA_ADSP2_1_OVERCLOCKED_STS)
 221                 dev_err(arizona->dev, "DSP1 overclocked\n");
 222         if (val[1] & ARIZONA_ISRC3_OVERCLOCKED_STS)
 223                 dev_err(arizona->dev, "ISRC3 overclocked\n");
 224         if (val[1] & ARIZONA_ISRC2_OVERCLOCKED_STS)
 225                 dev_err(arizona->dev, "ISRC2 overclocked\n");
 226         if (val[1] & ARIZONA_ISRC1_OVERCLOCKED_STS)
 227                 dev_err(arizona->dev, "ISRC1 overclocked\n");
 228
 229         if (val[2] & ARIZONA_SPDIF_OVERCLOCKED_STS)
 230                 dev_err(arizona->dev, "SPDIF overclocked\n");
 231
 232         return IRQ_HANDLED;
 233 }
 234
 235 #define ARIZONA_REG_POLL_DELAY_US 7500
 236
 237 static inline bool arizona_poll_reg_delay(ktime_t timeout)
 238 {
 239         if (ktime_compare(ktime_get(), timeout) > 0)
 240                 return false;
 241
 242         usleep_range(ARIZONA_REG_POLL_DELAY_US / 2, ARIZONA_REG_POLL_DELAY_US);
 243
 244         return true;
 245 }
 246
 247 static int arizona_poll_reg(struct arizona *arizona,
 248                             int timeout_ms, unsigned int reg,
 249                             unsigned int mask, unsigned int target)
 250 {
 251         ktime_t timeout = ktime_add_us(ktime_get(), timeout_ms * USEC_PER_MSEC);
 252         unsigned int val = 0;
 253         int ret;
 254
 255         do {
 256                 ret = regmap_read(arizona->regmap, reg, &val);
 257
 258                 if ((val & mask) == target)
 259                         return 0;
 260         } while (arizona_poll_reg_delay(timeout));
 261
 262         if (ret) {
 263                 dev_err(arizona->dev, "Failed polling reg 0x%x: %d\n",
 264                         reg, ret);
 265                 return ret;
 266         }
 267
 268         dev_err(arizona->dev, "Polling reg 0x%x timed out: %x\n", reg, val);
 269         return -ETIMEDOUT;
 270 }
 271
 272 static int arizona_wait_for_boot(struct arizona *arizona)
 273 {
 274         int ret;
 275
 276         /*
 277          * We can't use an interrupt as we need to runtime resume to do so,
 278          * we won't race with the interrupt handler as it'll be blocked on
 279          * runtime resume.
 280          */
 281         ret = arizona_poll_reg(arizona, 30, ARIZONA_INTERRUPT_RAW_STATUS_5,
 282                                ARIZONA_BOOT_DONE_STS, ARIZONA_BOOT_DONE_STS);
 283
 284         if (!ret)
 285                 regmap_write(arizona->regmap, ARIZONA_INTERRUPT_STATUS_5,
 286                              ARIZONA_BOOT_DONE_STS);
 287
 288         pm_runtime_mark_last_busy(arizona->dev);
 289
 290         return ret;
 291 }
 292
 293 static inline void arizona_enable_reset(struct arizona *arizona)
 294 {
 295         if (arizona->pdata.reset)
 296                 gpiod_set_raw_value_cansleep(arizona->pdata.reset, 0);
 297 }
 298
 299 static void arizona_disable_reset(struct arizona *arizona)
 300 {
 301         if (arizona->pdata.reset) {
 302                 switch (arizona->type) {
 303                 case WM5110:
 304                 case WM8280:
 305                         /* Meet requirements for minimum reset duration */
 306                         usleep_range(5000, 10000);
 307                         break;
 308                 default:
 309                         break;
 310                 }
 311
 312                 gpiod_set_raw_value_cansleep(arizona->pdata.reset, 1);
 313                 usleep_range(1000, 5000);
 314         }
 315 }
 316
 317 struct arizona_sysclk_state {
 318         unsigned int fll;
 319         unsigned int sysclk;
 320 };
 321
 322 static int arizona_enable_freerun_sysclk(struct arizona *arizona,
 323                                          struct arizona_sysclk_state *state)
 324 {
 325         int ret, err;
 326
 327         /* Cache existing FLL and SYSCLK settings */
 328         ret = regmap_read(arizona->regmap, ARIZONA_FLL1_CONTROL_1, &state->fll);
 329         if (ret) {
 330                 dev_err(arizona->dev, "Failed to cache FLL settings: %d\n",
 331                         ret);
 332                 return ret;
 333         }
 334         ret = regmap_read(arizona->regmap, ARIZONA_SYSTEM_CLOCK_1,
 335                           &state->sysclk);
 336         if (ret) {
 337                 dev_err(arizona->dev, "Failed to cache SYSCLK settings: %d\n",
 338                         ret);
 339                 return ret;
 340         }
 341
 342         /* Start up SYSCLK using the FLL in free running mode */
 343         ret = regmap_write(arizona->regmap, ARIZONA_FLL1_CONTROL_1,
 344                         ARIZONA_FLL1_ENA | ARIZONA_FLL1_FREERUN);
 345         if (ret) {
 346                 dev_err(arizona->dev,
 347                         "Failed to start FLL in freerunning mode: %d\n",
 348                         ret);
 349                 return ret;
 350         }
 351         ret = arizona_poll_reg(arizona, 180, ARIZONA_INTERRUPT_RAW_STATUS_5,
 352                                ARIZONA_FLL1_CLOCK_OK_STS,
 353                                ARIZONA_FLL1_CLOCK_OK_STS);
 354         if (ret)
 355                 goto err_fll;
 356
 357         ret = regmap_write(arizona->regmap, ARIZONA_SYSTEM_CLOCK_1, 0x0144);
 358         if (ret) {
 359                 dev_err(arizona->dev, "Failed to start SYSCLK: %d\n", ret);
 360                 goto err_fll;
 361         }
 362
 363         return 0;
 364
 365 err_fll:
 366         err = regmap_write(arizona->regmap, ARIZONA_FLL1_CONTROL_1, state->fll);
 367         if (err)
 368                 dev_err(arizona->dev,
 369                         "Failed to re-apply old FLL settings: %d\n", err);
 370
 371         return ret;
 372 }
 373
 374 static int arizona_disable_freerun_sysclk(struct arizona *arizona,
 375                                           struct arizona_sysclk_state *state)
 376 {
 377         int ret;
 378
 379         ret = regmap_write(arizona->regmap, ARIZONA_SYSTEM_CLOCK_1,
 380                            state->sysclk);
 381         if (ret) {
 382                 dev_err(arizona->dev,
 383                         "Failed to re-apply old SYSCLK settings: %d\n", ret);
 384                 return ret;
 385         }
 386
 387         ret = regmap_write(arizona->regmap, ARIZONA_FLL1_CONTROL_1, state->fll);
 388         if (ret) {
 389                 dev_err(arizona->dev,
 390                         "Failed to re-apply old FLL settings: %d\n", ret);
 391                 return ret;
 392         }
 393
 394         return 0;
 395 }
 396
 397 static int wm5102_apply_hardware_patch(struct arizona *arizona)
 398 {
 399         struct arizona_sysclk_state state;
 400         int err, ret;
 401
 402         ret = arizona_enable_freerun_sysclk(arizona, &state);
 403         if (ret)
 404                 return ret;
 405
 406         /* Start the write sequencer and wait for it to finish */
 407         ret = regmap_write(arizona->regmap, ARIZONA_WRITE_SEQUENCER_CTRL_0,
 408                            ARIZONA_WSEQ_ENA | ARIZONA_WSEQ_START | 160);
 409         if (ret) {
 410                 dev_err(arizona->dev, "Failed to start write sequencer: %d\n",
 411                         ret);
 412                 goto err;
 413         }
 414
 415         ret = arizona_poll_reg(arizona, 30, ARIZONA_WRITE_SEQUENCER_CTRL_1,
 416                                ARIZONA_WSEQ_BUSY, 0);
 417         if (ret)
 418                 regmap_write(arizona->regmap, ARIZONA_WRITE_SEQUENCER_CTRL_0,
 419                              ARIZONA_WSEQ_ABORT);
 420
 421 err:
 422         err = arizona_disable_freerun_sysclk(arizona, &state);
 423
 424         return ret ?: err;
 425 }
 426
 427 /*
 428  * Register patch to some of the CODECs internal write sequences
 429  * to ensure a clean exit from the low power sleep state.
 430  */
 431 static const struct reg_sequence wm5110_sleep_patch[] = {
 432         { 0x337A, 0xC100 },
 433         { 0x337B, 0x0041 },
 434         { 0x3300, 0xA210 },
 435         { 0x3301, 0x050C },
 436 };
 437
 438 static int wm5110_apply_sleep_patch(struct arizona *arizona)
 439 {
 440         struct arizona_sysclk_state state;
 441         int err, ret;
 442
 443         ret = arizona_enable_freerun_sysclk(arizona, &state);
 444         if (ret)
 445                 return ret;
 446
 447         ret = regmap_multi_reg_write_bypassed(arizona->regmap,
 448                                               wm5110_sleep_patch,
 449                                               ARRAY_SIZE(wm5110_sleep_patch));
 450
 451         err = arizona_disable_freerun_sysclk(arizona, &state);
 452
 453         return ret ?: err;
 454 }
 455
 456 static int wm5102_clear_write_sequencer(struct arizona *arizona)
 457 {
 458         int ret;
 459
 460         ret = regmap_write(arizona->regmap, ARIZONA_WRITE_SEQUENCER_CTRL_3,
 461                            0x0);
 462         if (ret) {
 463                 dev_err(arizona->dev,
 464                         "Failed to clear write sequencer state: %d\n", ret);
 465                 return ret;
 466         }
 467
 468         arizona_enable_reset(arizona);
 469         regulator_disable(arizona->dcvdd);
 470
 471         msleep(20);
 472
 473         ret = regulator_enable(arizona->dcvdd);
 474         if (ret) {
 475                 dev_err(arizona->dev, "Failed to re-enable DCVDD: %d\n", ret);
 476                 return ret;
 477         }
 478         arizona_disable_reset(arizona);
 479
 480         return 0;
 481 }
 482
 483 #ifdef CONFIG_PM
 484 static int arizona_isolate_dcvdd(struct arizona *arizona)
 485 {
 486         int ret;
 487
 488         ret = regmap_update_bits(arizona->regmap,
 489                                  ARIZONA_ISOLATION_CONTROL,
 490                                  ARIZONA_ISOLATE_DCVDD1,
 491                                  ARIZONA_ISOLATE_DCVDD1);
 492         if (ret != 0)
 493                 dev_err(arizona->dev, "Failed to isolate DCVDD: %d\n", ret);
 494
 495         return ret;
 496 }
 497
 498 static int arizona_connect_dcvdd(struct arizona *arizona)
 499 {
 500         int ret;
 501
 502         ret = regmap_update_bits(arizona->regmap,
 503                                  ARIZONA_ISOLATION_CONTROL,
 504                                  ARIZONA_ISOLATE_DCVDD1, 0);
 505         if (ret != 0)
 506                 dev_err(arizona->dev, "Failed to connect DCVDD: %d\n", ret);
 507
 508         return ret;
 509 }
 510
 511 static int arizona_is_jack_det_active(struct arizona *arizona)
 512 {
 513         unsigned int val;
 514         int ret;
 515
 516         ret = regmap_read(arizona->regmap, ARIZONA_JACK_DETECT_ANALOGUE, &val);
 517         if (ret) {
 518                 dev_err(arizona->dev,
 519                         "Failed to check jack det status: %d\n", ret);
 520                 return ret;
 521         } else if (val & ARIZONA_JD1_ENA) {
 522                 return 1;
 523         } else {
 524                 return 0;
 525         }
 526 }
 527
 528 static int arizona_runtime_resume(struct device *dev)
 529 {
 530         struct arizona *arizona = dev_get_drvdata(dev);
 531         int ret;
 532
 533         dev_dbg(arizona->dev, "Leaving AoD mode\n");
 534
 535         if (arizona->has_fully_powered_off) {
 536                 dev_dbg(arizona->dev, "Re-enabling core supplies\n");
 537
 538                 ret = regulator_bulk_enable(arizona->num_core_supplies,
 539                                             arizona->core_supplies);
 540                 if (ret) {
 541                         dev_err(dev, "Failed to enable core supplies: %d\n",
 542                                 ret);
 543                         return ret;
 544                 }
 545         }
 546
 547         ret = regulator_enable(arizona->dcvdd);
 548         if (ret != 0) {
 549                 dev_err(arizona->dev, "Failed to enable DCVDD: %d\n", ret);
 550                 if (arizona->has_fully_powered_off)
 551                         regulator_bulk_disable(arizona->num_core_supplies,
 552                                                arizona->core_supplies);
 553                 return ret;
 554         }
 555
 556         if (arizona->has_fully_powered_off) {
 557                 arizona_disable_reset(arizona);
 558                 enable_irq(arizona->irq);
 559                 arizona->has_fully_powered_off = false;
 560         }
 561
 562         regcache_cache_only(arizona->regmap, false);
 563
 564         switch (arizona->type) {
 565         case WM5102:
 566                 if (arizona->external_dcvdd) {
 567                         ret = arizona_connect_dcvdd(arizona);
 568                         if (ret != 0)
 569                                 goto err;
 570                 }
 571
 572                 ret = wm5102_patch(arizona);
 573                 if (ret != 0) {
 574                         dev_err(arizona->dev, "Failed to apply patch: %d\n",
 575                                 ret);
 576                         goto err;
 577                 }
 578
 579                 ret = wm5102_apply_hardware_patch(arizona);
 580                 if (ret) {
 581                         dev_err(arizona->dev,
 582                                 "Failed to apply hardware patch: %d\n",
 583                                 ret);
 584                         goto err;
 585                 }
 586                 break;
 587         case WM5110:
 588         case WM8280:
 589                 ret = arizona_wait_for_boot(arizona);
 590                 if (ret)
 591                         goto err;
 592
 593                 if (arizona->external_dcvdd) {
 594                         ret = arizona_connect_dcvdd(arizona);
 595                         if (ret != 0)
 596                                 goto err;
 597                 } else {
 598                         /*
 599                          * As this is only called for the internal regulator
 600                          * (where we know voltage ranges available) it is ok
 601                          * to request an exact range.
 602                          */
 603                         ret = regulator_set_voltage(arizona->dcvdd,
 604                                                     1200000, 1200000);
 605                         if (ret < 0) {
 606                                 dev_err(arizona->dev,
 607                                         "Failed to set resume voltage: %d\n",
 608                                         ret);
 609                                 goto err;
 610                         }
 611                 }
 612
 613                 ret = wm5110_apply_sleep_patch(arizona);
 614                 if (ret) {
 615                         dev_err(arizona->dev,
 616                                 "Failed to re-apply sleep patch: %d\n",
 617                                 ret);
 618                         goto err;
 619                 }
 620                 break;
 621         case WM1831:
 622         case CS47L24:
 623                 ret = arizona_wait_for_boot(arizona);
 624                 if (ret != 0)
 625                         goto err;
 626                 break;
 627         default:
 628                 ret = arizona_wait_for_boot(arizona);
 629                 if (ret != 0)
 630                         goto err;
 631
 632                 if (arizona->external_dcvdd) {
 633                         ret = arizona_connect_dcvdd(arizona);
 634                         if (ret != 0)
 635                                 goto err;
 636                 }
 637                 break;
 638         }
 639
 640         ret = regcache_sync(arizona->regmap);
 641         if (ret != 0) {
 642                 dev_err(arizona->dev, "Failed to restore register cache\n");
 643                 goto err;
 644         }
 645
 646         return 0;
 647
 648 err:
 649         regcache_cache_only(arizona->regmap, true);
 650         regulator_disable(arizona->dcvdd);
 651         return ret;
 652 }
 653
 654 static int arizona_runtime_suspend(struct device *dev)
 655 {
 656         struct arizona *arizona = dev_get_drvdata(dev);
 657         int jd_active = 0;
 658         int ret;
 659
 660         dev_dbg(arizona->dev, "Entering AoD mode\n");
 661
 662         switch (arizona->type) {
 663         case WM5110:
 664         case WM8280:
 665                 jd_active = arizona_is_jack_det_active(arizona);
 666                 if (jd_active < 0)
 667                         return jd_active;
 668
 669                 if (arizona->external_dcvdd) {
 670                         ret = arizona_isolate_dcvdd(arizona);
 671                         if (ret != 0)
 672                                 return ret;
 673                 } else {
 674                         /*
 675                          * As this is only called for the internal regulator
 676                          * (where we know voltage ranges available) it is ok
 677                          * to request an exact range.
 678                          */
 679                         ret = regulator_set_voltage(arizona->dcvdd,
 680                                                     1175000, 1175000);
 681                         if (ret < 0) {
 682                                 dev_err(arizona->dev,
 683                                         "Failed to set suspend voltage: %d\n",
 684                                         ret);
 685                                 return ret;
 686                         }
 687                 }
 688                 break;
 689         case WM5102:
 690                 jd_active = arizona_is_jack_det_active(arizona);
 691                 if (jd_active < 0)
 692                         return jd_active;
 693
 694                 if (arizona->external_dcvdd) {
 695                         ret = arizona_isolate_dcvdd(arizona);
 696                         if (ret != 0)
 697                                 return ret;
 698                 }
 699
 700                 if (!jd_active) {
 701                         ret = regmap_write(arizona->regmap,
 702                                            ARIZONA_WRITE_SEQUENCER_CTRL_3, 0x0);
 703                         if (ret) {
 704                                 dev_err(arizona->dev,
 705                                         "Failed to clear write sequencer: %d\n",
 706                                         ret);
 707                                 return ret;
 708                         }
 709                 }
 710                 break;
 711         case WM1831:
 712         case CS47L24:
 713                 break;
 714         default:
 715                 jd_active = arizona_is_jack_det_active(arizona);
 716                 if (jd_active < 0)
 717                         return jd_active;
 718
 719                 if (arizona->external_dcvdd) {
 720                         ret = arizona_isolate_dcvdd(arizona);
 721                         if (ret != 0)
 722                                 return ret;
 723                 }
 724                 break;
 725         }
 726
 727         regcache_cache_only(arizona->regmap, true);
 728         regcache_mark_dirty(arizona->regmap);
 729         regulator_disable(arizona->dcvdd);
 730
 731         /* Allow us to completely power down if no jack detection */
 732         if (!jd_active) {
 733                 dev_dbg(arizona->dev, "Fully powering off\n");
 734
 735                 arizona->has_fully_powered_off = true;
 736
 737                 disable_irq_nosync(arizona->irq);
 738                 arizona_enable_reset(arizona);
 739                 regulator_bulk_disable(arizona->num_core_supplies,
 740                                        arizona->core_supplies);
 741         }
 742
 743         return 0;
 744 }
 745 #endif
 746
 747 #ifdef CONFIG_PM_SLEEP
 748 static int arizona_suspend(struct device *dev)
 749 {
 750         struct arizona *arizona = dev_get_drvdata(dev);
 751
 752         dev_dbg(arizona->dev, "Suspend, disabling IRQ\n");
 753         disable_irq(arizona->irq);
 754
 755         return 0;
 756 }
 757
 758 static int arizona_suspend_noirq(struct device *dev)
 759 {
 760         struct arizona *arizona = dev_get_drvdata(dev);
 761
 762         dev_dbg(arizona->dev, "Late suspend, reenabling IRQ\n");
 763         enable_irq(arizona->irq);
 764
 765         return 0;
 766 }
 767
 768 static int arizona_resume_noirq(struct device *dev)
 769 {
 770         struct arizona *arizona = dev_get_drvdata(dev);
 771
 772         dev_dbg(arizona->dev, "Early resume, disabling IRQ\n");
 773         disable_irq(arizona->irq);
 774
 775         return 0;
 776 }
 777
 778 static int arizona_resume(struct device *dev)
 779 {
 780         struct arizona *arizona = dev_get_drvdata(dev);
 781
 782         dev_dbg(arizona->dev, "Resume, reenabling IRQ\n");
 783         enable_irq(arizona->irq);
 784
 785         return 0;
 786 }
 787 #endif
 788
 789 const struct dev_pm_ops arizona_pm_ops = {
 790         SET_RUNTIME_PM_OPS(arizona_runtime_suspend,
 791                            arizona_runtime_resume,
 792                            NULL)
 793         SET_SYSTEM_SLEEP_PM_OPS(arizona_suspend, arizona_resume)
 794         SET_NOIRQ_SYSTEM_SLEEP_PM_OPS(arizona_suspend_noirq,
 795                                       arizona_resume_noirq)
 796 };
 797 EXPORT_SYMBOL_GPL(arizona_pm_ops);
 798
 799 #ifdef CONFIG_OF
 800 static int arizona_of_get_core_pdata(struct arizona *arizona)
 801 {
 802         struct arizona_pdata *pdata = &arizona->pdata;
 803         int ret, i;
 804
 805         /* Handle old non-standard DT binding */
 806         pdata->reset = devm_gpiod_get(arizona->dev, "wlf,reset", GPIOD_OUT_LOW);
 807         if (IS_ERR(pdata->reset)) {
 808                 ret = PTR_ERR(pdata->reset);
 809
 810                 /*
 811                  * Reset missing will be caught when other binding is read
 812                  * but all other errors imply this binding is in use but has
 813                  * encountered a problem so should be handled.
 814                  */
 815                 if (ret == -EPROBE_DEFER)
 816                         return ret;
 817                 else if (ret != -ENOENT && ret != -ENOSYS)
 818                         dev_err(arizona->dev, "Reset GPIO malformed: %d\n",
 819                                 ret);
 820
 821                 pdata->reset = NULL;
 822         }
 823
 824         ret = of_property_read_u32_array(arizona->dev->of_node,
 825                                          "wlf,gpio-defaults",
 826                                          pdata->gpio_defaults,
 827                                          ARRAY_SIZE(pdata->gpio_defaults));
 828         if (ret >= 0) {
 829                 /*
 830                  * All values are literal except out of range values
 831                  * which are chip default, translate into platform
 832                  * data which uses 0 as chip default and out of range
 833                  * as zero.
 834                  */
 835                 for (i = 0; i < ARRAY_SIZE(pdata->gpio_defaults); i++) {
 836                         if (pdata->gpio_defaults[i] > 0xffff)
 837                                 pdata->gpio_defaults[i] = 0;
 838                         else if (pdata->gpio_defaults[i] == 0)
 839                                 pdata->gpio_defaults[i] = 0x10000;
 840                 }
 841         } else {
 842                 dev_err(arizona->dev, "Failed to parse GPIO defaults: %d\n",
 843                         ret);
 844         }
 845
 846         return 0;
 847 }
 848 #else
 849 static inline int arizona_of_get_core_pdata(struct arizona *arizona)
 850 {
 851         return 0;
 852 }
 853 #endif
 854
 855 static const struct mfd_cell early_devs[] = {
 856         { .name = "arizona-ldo1" },
 857 };
 858
 859 static const char * const wm5102_supplies[] = {
 860         "MICVDD",
 861         "DBVDD2",
 862         "DBVDD3",
 863         "CPVDD",
 864         "SPKVDDL",
 865         "SPKVDDR",
 866 };
 867
 868 static const struct mfd_cell wm5102_devs[] = {
 869         { .name = "arizona-micsupp" },
 870         { .name = "arizona-gpio" },
 871         { .name = "arizona-haptics" },
 872         { .name = "arizona-pwm" },
 873         {
 874                 .name = "wm5102-codec",
 875                 .parent_supplies = wm5102_supplies,
 876                 .num_parent_supplies = ARRAY_SIZE(wm5102_supplies),
 877         },
 878 };
 879
 880 static const struct mfd_cell wm5110_devs[] = {
 881         { .name = "arizona-micsupp" },
 882         { .name = "arizona-gpio" },
 883         { .name = "arizona-haptics" },
 884         { .name = "arizona-pwm" },
 885         {
 886                 .name = "wm5110-codec",
 887                 .parent_supplies = wm5102_supplies,
 888                 .num_parent_supplies = ARRAY_SIZE(wm5102_supplies),
 889         },
 890 };
 891
 892 static const char * const cs47l24_supplies[] = {
 893         "MICVDD",
 894         "CPVDD",
 895         "SPKVDD",
 896 };
 897
 898 static const struct mfd_cell cs47l24_devs[] = {
 899         { .name = "arizona-gpio" },
 900         { .name = "arizona-haptics" },
 901         { .name = "arizona-pwm" },
 902         {
 903                 .name = "cs47l24-codec",
 904                 .parent_supplies = cs47l24_supplies,
 905                 .num_parent_supplies = ARRAY_SIZE(cs47l24_supplies),
 906         },
 907 };
 908
 909 static const char * const wm8997_supplies[] = {
 910         "MICVDD",
 911         "DBVDD2",
 912         "CPVDD",
 913         "SPKVDD",
 914 };
 915
 916 static const struct mfd_cell wm8997_devs[] = {
 917         { .name = "arizona-micsupp" },
 918         { .name = "arizona-gpio" },
 919         { .name = "arizona-haptics" },
 920         { .name = "arizona-pwm" },
 921         {
 922                 .name = "wm8997-codec",
 923                 .parent_supplies = wm8997_supplies,
 924                 .num_parent_supplies = ARRAY_SIZE(wm8997_supplies),
 925         },
 926 };
 927
 928 static const struct mfd_cell wm8998_devs[] = {
 929         { .name = "arizona-micsupp" },
 930         { .name = "arizona-gpio" },
 931         { .name = "arizona-haptics" },
 932         { .name = "arizona-pwm" },
 933         {
 934                 .name = "wm8998-codec",
 935                 .parent_supplies = wm5102_supplies,
 936                 .num_parent_supplies = ARRAY_SIZE(wm5102_supplies),
 937         },
 938 };
 939
 940 int arizona_dev_init(struct arizona *arizona)
 941 {
 942         static const char * const mclk_name[] = { "mclk1", "mclk2" };
 943         struct device *dev = arizona->dev;
 944         const char *type_name = NULL;
 945         unsigned int reg, val;
 946         int (*apply_patch)(struct arizona *) = NULL;
 947         const struct mfd_cell *subdevs = NULL;
 948         int n_subdevs = 0, ret, i;
 949
 950         dev_set_drvdata(arizona->dev, arizona);
 951         mutex_init(&arizona->clk_lock);
 952
 953         if (dev_get_platdata(arizona->dev)) {
 954                 memcpy(&arizona->pdata, dev_get_platdata(arizona->dev),
 955                        sizeof(arizona->pdata));
 956         } else {
 957                 ret = arizona_of_get_core_pdata(arizona);
 958                 if (ret < 0)
 959                         return ret;
 960         }
 961
 962         BUILD_BUG_ON(ARRAY_SIZE(arizona->mclk) != ARRAY_SIZE(mclk_name));
 963         for (i = 0; i < ARRAY_SIZE(arizona->mclk); i++) {
 964                 arizona->mclk[i] = devm_clk_get(arizona->dev, mclk_name[i]);
 965                 if (IS_ERR(arizona->mclk[i])) {
 966                         dev_info(arizona->dev, "Failed to get %s: %ld\n",
 967                                  mclk_name[i], PTR_ERR(arizona->mclk[i]));
 968                         arizona->mclk[i] = NULL;
 969                 }
 970         }
 971
 972         regcache_cache_only(arizona->regmap, true);
 973
 974         switch (arizona->type) {
 975         case WM5102:
 976         case WM5110:
 977         case WM8280:
 978         case WM8997:
 979         case WM8998:
 980         case WM1814:
 981         case WM1831:
 982         case CS47L24:
 983                 for (i = 0; i < ARRAY_SIZE(wm5102_core_supplies); i++)
 984                         arizona->core_supplies[i].supply
 985                                 = wm5102_core_supplies[i];
 986                 arizona->num_core_supplies = ARRAY_SIZE(wm5102_core_supplies);
 987                 break;
 988         default:
 989                 dev_err(arizona->dev, "Unknown device type %d\n",
 990                         arizona->type);
 991                 return -ENODEV;
 992         }
 993
 994         /* Mark DCVDD as external, LDO1 driver will clear if internal */
 995         arizona->external_dcvdd = true;
 996
 997         switch (arizona->type) {
 998         case WM1831:
 999         case CS47L24:
1000                 break; /* No LDO1 regulator */
1001         default:
1002                 ret = mfd_add_devices(arizona->dev, -1, early_devs,
1003                                       ARRAY_SIZE(early_devs), NULL, 0, NULL);
1004                 if (ret != 0) {
1005                         dev_err(dev, "Failed to add early children: %d\n", ret);
1006                         return ret;
1007                 }
1008                 break;
1009         }
1010
1011         ret = devm_regulator_bulk_get(dev, arizona->num_core_supplies,
1012                                       arizona->core_supplies);
1013         if (ret != 0) {
1014                 dev_err(dev, "Failed to request core supplies: %d\n",
1015                         ret);
1016                 goto err_early;
1017         }
1018
1019         /**
1020          * Don't use devres here because the only device we have to get
1021          * against is the MFD device and DCVDD will likely be supplied by
1022          * one of its children. Meaning that the regulator will be
1023          * destroyed by the time devres calls regulator put.
1024          */
1025         arizona->dcvdd = regulator_get(arizona->dev, "DCVDD");
1026         if (IS_ERR(arizona->dcvdd)) {
1027                 ret = PTR_ERR(arizona->dcvdd);
1028                 dev_err(dev, "Failed to request DCVDD: %d\n", ret);
1029                 goto err_early;
1030         }
1031
1032         if (!arizona->pdata.reset) {
1033                 /* Start out with /RESET low to put the chip into reset */
1034                 arizona->pdata.reset = devm_gpiod_get(arizona->dev, "reset",
1035                                                       GPIOD_OUT_LOW);
1036                 if (IS_ERR(arizona->pdata.reset)) {
1037                         ret = PTR_ERR(arizona->pdata.reset);
1038                         if (ret == -EPROBE_DEFER)
1039                                 goto err_dcvdd;
1040
1041                         dev_err(arizona->dev,
1042                                 "Reset GPIO missing/malformed: %d\n", ret);
1043
1044                         arizona->pdata.reset = NULL;
1045                 }
1046         }
1047
1048         ret = regulator_bulk_enable(arizona->num_core_supplies,
1049                                     arizona->core_supplies);
1050         if (ret != 0) {
1051                 dev_err(dev, "Failed to enable core supplies: %d\n",
1052                         ret);
1053                 goto err_dcvdd;
1054         }
1055
1056         ret = regulator_enable(arizona->dcvdd);
1057         if (ret != 0) {
1058                 dev_err(dev, "Failed to enable DCVDD: %d\n", ret);
1059                 goto err_enable;
1060         }
1061
1062         arizona_disable_reset(arizona);
1063
1064         regcache_cache_only(arizona->regmap, false);
1065
1066         /* Verify that this is a chip we know about */
1067         ret = regmap_read(arizona->regmap, ARIZONA_SOFTWARE_RESET, &reg);
1068         if (ret != 0) {
1069                 dev_err(dev, "Failed to read ID register: %d\n", ret);
1070                 goto err_reset;
1071         }
1072
1073         switch (reg) {
1074         case 0x5102:
1075         case 0x5110:
1076         case 0x6349:
1077         case 0x6363:
1078         case 0x8997:
1079                 break;
1080         default:
1081                 dev_err(arizona->dev, "Unknown device ID: %x\n", reg);
1082                 ret = -ENODEV;
1083                 goto err_reset;
1084         }
1085
1086         /* If we have a /RESET GPIO we'll already be reset */
1087         if (!arizona->pdata.reset) {
1088                 ret = regmap_write(arizona->regmap, ARIZONA_SOFTWARE_RESET, 0);
1089                 if (ret != 0) {
1090                         dev_err(dev, "Failed to reset device: %d\n", ret);
1091                         goto err_reset;
1092                 }
1093
1094                 usleep_range(1000, 5000);
1095         }
1096
1097         /* Ensure device startup is complete */
1098         switch (arizona->type) {
1099         case WM5102:
1100                 ret = regmap_read(arizona->regmap,
1101                                   ARIZONA_WRITE_SEQUENCER_CTRL_3, &val);
1102                 if (ret) {
1103                         dev_err(dev,
1104                                 "Failed to check write sequencer state: %d\n",
1105                                 ret);
1106                 } else if (val & 0x01) {
1107                         ret = wm5102_clear_write_sequencer(arizona);
1108                         if (ret)
1109                                 return ret;
1110                 }
1111                 break;
1112         default:
1113                 break;
1114         }
1115
1116         ret = arizona_wait_for_boot(arizona);
1117         if (ret) {
1118                 dev_err(arizona->dev, "Device failed initial boot: %d\n", ret);
1119                 goto err_reset;
1120         }
1121
1122         /* Read the device ID information & do device specific stuff */
1123         ret = regmap_read(arizona->regmap, ARIZONA_SOFTWARE_RESET, &reg);
1124         if (ret != 0) {
1125                 dev_err(dev, "Failed to read ID register: %d\n", ret);
1126                 goto err_reset;
1127         }
1128
1129         ret = regmap_read(arizona->regmap, ARIZONA_DEVICE_REVISION,
1130                           &arizona->rev);
1131         if (ret != 0) {
1132                 dev_err(dev, "Failed to read revision register: %d\n", ret);
1133                 goto err_reset;
1134         }
1135         arizona->rev &= ARIZONA_DEVICE_REVISION_MASK;
1136
1137         switch (reg) {
1138         case 0x5102:
1139                 if (IS_ENABLED(CONFIG_MFD_WM5102)) {
1140                         type_name = "WM5102";
1141                         if (arizona->type != WM5102) {
1142                                 dev_warn(arizona->dev,
1143                                          "WM5102 registered as %d\n",
1144                                          arizona->type);
1145                                 arizona->type = WM5102;
1146                         }
1147
1148                         apply_patch = wm5102_patch;
1149                         arizona->rev &= 0x7;
1150                         subdevs = wm5102_devs;
1151                         n_subdevs = ARRAY_SIZE(wm5102_devs);
1152                 }
1153                 break;
1154         case 0x5110:
1155                 if (IS_ENABLED(CONFIG_MFD_WM5110)) {
1156                         switch (arizona->type) {
1157                         case WM5110:
1158                                 type_name = "WM5110";
1159                                 break;
1160                         case WM8280:
1161                                 type_name = "WM8280";
1162                                 break;
1163                         default:
1164                                 type_name = "WM5110";
1165                                 dev_warn(arizona->dev,
1166                                          "WM5110 registered as %d\n",
1167                                          arizona->type);
1168                                 arizona->type = WM5110;
1169                                 break;
1170                         }
1171
1172                         apply_patch = wm5110_patch;
1173                         subdevs = wm5110_devs;
1174                         n_subdevs = ARRAY_SIZE(wm5110_devs);
1175                 }
1176                 break;
1177         case 0x6363:
1178                 if (IS_ENABLED(CONFIG_MFD_CS47L24)) {
1179                         switch (arizona->type) {
1180                         case CS47L24:
1181                                 type_name = "CS47L24";
1182                                 break;
1183
1184                         case WM1831:
1185                                 type_name = "WM1831";
1186                                 break;
1187
1188                         default:
1189                                 dev_warn(arizona->dev,
1190                                          "CS47L24 registered as %d\n",
1191                                          arizona->type);
1192                                 arizona->type = CS47L24;
1193                                 break;
1194                         }
1195
1196                         apply_patch = cs47l24_patch;
1197                         subdevs = cs47l24_devs;
1198                         n_subdevs = ARRAY_SIZE(cs47l24_devs);
1199                 }
1200                 break;
1201         case 0x8997:
1202                 if (IS_ENABLED(CONFIG_MFD_WM8997)) {
1203                         type_name = "WM8997";
1204                         if (arizona->type != WM8997) {
1205                                 dev_warn(arizona->dev,
1206                                          "WM8997 registered as %d\n",
1207                                          arizona->type);
1208                                 arizona->type = WM8997;
1209                         }
1210
1211                         apply_patch = wm8997_patch;
1212                         subdevs = wm8997_devs;
1213                         n_subdevs = ARRAY_SIZE(wm8997_devs);
1214                 }
1215                 break;
1216         case 0x6349:
1217                 if (IS_ENABLED(CONFIG_MFD_WM8998)) {
1218                         switch (arizona->type) {
1219                         case WM8998:
1220                                 type_name = "WM8998";
1221                                 break;
1222
1223                         case WM1814:
1224                                 type_name = "WM1814";
1225                                 break;
1226
1227                         default:
1228                                 type_name = "WM8998";
1229                                 dev_warn(arizona->dev,
1230                                          "WM8998 registered as %d\n",
1231                                          arizona->type);
1232                                 arizona->type = WM8998;
1233                         }
1234
1235                         apply_patch = wm8998_patch;
1236                         subdevs = wm8998_devs;
1237                         n_subdevs = ARRAY_SIZE(wm8998_devs);
1238                 }
1239                 break;
1240         default:
1241                 dev_err(arizona->dev, "Unknown device ID %x\n", reg);
1242                 ret = -ENODEV;
1243                 goto err_reset;
1244         }
1245
1246         if (!subdevs) {
1247                 dev_err(arizona->dev,
1248                         "No kernel support for device ID %x\n", reg);
1249                 ret = -ENODEV;
1250                 goto err_reset;
1251         }
1252
1253         dev_info(dev, "%s revision %c\n", type_name, arizona->rev + 'A');
1254
1255         if (apply_patch) {
1256                 ret = apply_patch(arizona);
1257                 if (ret != 0) {
1258                         dev_err(arizona->dev, "Failed to apply patch: %d\n",
1259                                 ret);
1260                         goto err_reset;
1261                 }
1262
1263                 switch (arizona->type) {
1264                 case WM5102:
1265                         ret = wm5102_apply_hardware_patch(arizona);
1266                         if (ret) {
1267                                 dev_err(arizona->dev,
1268                                         "Failed to apply hardware patch: %d\n",
1269                                         ret);
1270                                 goto err_reset;
1271                         }
1272                         break;
1273                 case WM5110:
1274                 case WM8280:
1275                         ret = wm5110_apply_sleep_patch(arizona);
1276                         if (ret) {
1277                                 dev_err(arizona->dev,
1278                                         "Failed to apply sleep patch: %d\n",
1279                                         ret);
1280                                 goto err_reset;
1281                         }
1282                         break;
1283                 default:
1284                         break;
1285                 }
1286         }
1287
1288         for (i = 0; i < ARRAY_SIZE(arizona->pdata.gpio_defaults); i++) {
1289                 if (!arizona->pdata.gpio_defaults[i])
1290                         continue;
1291
1292                 regmap_write(arizona->regmap, ARIZONA_GPIO1_CTRL + i,
1293                              arizona->pdata.gpio_defaults[i]);
1294         }
1295
1296         /* Chip default */
1297         if (!arizona->pdata.clk32k_src)
1298                 arizona->pdata.clk32k_src = ARIZONA_32KZ_MCLK2;
1299
1300         switch (arizona->pdata.clk32k_src) {
1301         case ARIZONA_32KZ_MCLK1:
1302         case ARIZONA_32KZ_MCLK2:
1303                 regmap_update_bits(arizona->regmap, ARIZONA_CLOCK_32K_1,
1304                                    ARIZONA_CLK_32K_SRC_MASK,
1305                                    arizona->pdata.clk32k_src - 1);
1306                 arizona_clk32k_enable(arizona);
1307                 break;
1308         case ARIZONA_32KZ_NONE:
1309                 regmap_update_bits(arizona->regmap, ARIZONA_CLOCK_32K_1,
1310                                    ARIZONA_CLK_32K_SRC_MASK, 2);
1311                 break;
1312         default:
1313                 dev_err(arizona->dev, "Invalid 32kHz clock source: %d\n",
1314                         arizona->pdata.clk32k_src);
1315                 ret = -EINVAL;
1316                 goto err_reset;
1317         }
1318
1319         for (i = 0; i < ARIZONA_MAX_MICBIAS; i++) {
1320                 if (!arizona->pdata.micbias[i].mV &&
1321                     !arizona->pdata.micbias[i].bypass)
1322                         continue;
1323
1324                 /* Apply default for bypass mode */
1325                 if (!arizona->pdata.micbias[i].mV)
1326                         arizona->pdata.micbias[i].mV = 2800;
1327
1328                 val = (arizona->pdata.micbias[i].mV - 1500) / 100;
1329
1330                 val <<= ARIZONA_MICB1_LVL_SHIFT;
1331
1332                 if (arizona->pdata.micbias[i].ext_cap)
1333                         val |= ARIZONA_MICB1_EXT_CAP;
1334
1335                 if (arizona->pdata.micbias[i].discharge)
1336                         val |= ARIZONA_MICB1_DISCH;
1337
1338                 if (arizona->pdata.micbias[i].soft_start)
1339                         val |= ARIZONA_MICB1_RATE;
1340
1341                 if (arizona->pdata.micbias[i].bypass)
1342                         val |= ARIZONA_MICB1_BYPASS;
1343
1344                 regmap_update_bits(arizona->regmap,
1345                                    ARIZONA_MIC_BIAS_CTRL_1 + i,
1346                                    ARIZONA_MICB1_LVL_MASK |
1347                                    ARIZONA_MICB1_EXT_CAP |
1348                                    ARIZONA_MICB1_DISCH |
1349                                    ARIZONA_MICB1_BYPASS |
1350                                    ARIZONA_MICB1_RATE, val);
1351         }
1352
1353         pm_runtime_set_active(arizona->dev);
1354         pm_runtime_enable(arizona->dev);
1355
1356         /* Set up for interrupts */
1357         ret = arizona_irq_init(arizona);
1358         if (ret != 0)
1359                 goto err_pm;
1360
1361         pm_runtime_set_autosuspend_delay(arizona->dev, 100);
1362         pm_runtime_use_autosuspend(arizona->dev);
1363
1364         arizona_request_irq(arizona, ARIZONA_IRQ_CLKGEN_ERR, "CLKGEN error",
1365                             arizona_clkgen_err, arizona);
1366         arizona_request_irq(arizona, ARIZONA_IRQ_OVERCLOCKED, "Overclocked",
1367                             arizona_overclocked, arizona);
1368         arizona_request_irq(arizona, ARIZONA_IRQ_UNDERCLOCKED, "Underclocked",
1369                             arizona_underclocked, arizona);
1370
1371         ret = mfd_add_devices(arizona->dev, PLATFORM_DEVID_NONE,
1372                               subdevs, n_subdevs, NULL, 0, NULL);
1373
1374         if (ret) {
1375                 dev_err(arizona->dev, "Failed to add subdevices: %d\n", ret);
1376                 goto err_irq;
1377         }
1378
1379         return 0;
1380
1381 err_irq:
1382         arizona_irq_exit(arizona);
1383 err_pm:
1384         pm_runtime_disable(arizona->dev);
1385
1386         switch (arizona->pdata.clk32k_src) {
1387         case ARIZONA_32KZ_MCLK1:
1388         case ARIZONA_32KZ_MCLK2:
1389                 arizona_clk32k_disable(arizona);
1390                 break;
1391         default:
1392                 break;
1393         }
1394 err_reset:
1395         arizona_enable_reset(arizona);
1396         regulator_disable(arizona->dcvdd);
1397 err_enable:
1398         regulator_bulk_disable(arizona->num_core_supplies,
1399                                arizona->core_supplies);
1400 err_dcvdd:
1401         regulator_put(arizona->dcvdd);
1402 err_early:
1403         mfd_remove_devices(dev);
1404         return ret;
1405 }
1406 EXPORT_SYMBOL_GPL(arizona_dev_init);
1407
1408 int arizona_dev_exit(struct arizona *arizona)
1409 {
1410         disable_irq(arizona->irq);
1411         pm_runtime_disable(arizona->dev);
1412
1413         regulator_disable(arizona->dcvdd);
1414         regulator_put(arizona->dcvdd);
1415
1416         switch (arizona->pdata.clk32k_src) {
1417         case ARIZONA_32KZ_MCLK1:
1418         case ARIZONA_32KZ_MCLK2:
1419                 arizona_clk32k_disable(arizona);
1420                 break;
1421         default:
1422                 break;
1423         }
1424
1425         mfd_remove_devices(arizona->dev);
1426         arizona_free_irq(arizona, ARIZONA_IRQ_UNDERCLOCKED, arizona);
1427         arizona_free_irq(arizona, ARIZONA_IRQ_OVERCLOCKED, arizona);
1428         arizona_free_irq(arizona, ARIZONA_IRQ_CLKGEN_ERR, arizona);
1429         arizona_irq_exit(arizona);
1430         arizona_enable_reset(arizona);
1431
1432         regulator_bulk_disable(arizona->num_core_supplies,
1433                                arizona->core_supplies);
1434         return 0;
1435 }
1436 EXPORT_SYMBOL_GPL(arizona_dev_exit);
1437
1438 MODULE_LICENSE("GPL v2");