drivers/mfd/arizona-core.c

   1 /*
   2  * Arizona core driver
   3  *
   4  * Copyright 2012 Wolfson Microelectronics plc
   5  *
   6  * Author: Mark Brown <broonie@opensource.wolfsonmicro.com>
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License version 2 as
  10  * published by the Free Software Foundation.
  11  */
  12
  13 #include <linux/delay.h>
  14 #include <linux/err.h>
  15 #include <linux/gpio.h>
  16 #include <linux/interrupt.h>
  17 #include <linux/mfd/core.h>
  18 #include <linux/module.h>
  19 #include <linux/of.h>
  20 #include <linux/of_device.h>
  21 #include <linux/of_gpio.h>
  22 #include <linux/pm_runtime.h>
  23 #include <linux/regmap.h>
  24 #include <linux/regulator/consumer.h>
  25 #include <linux/regulator/machine.h>
  26 #include <linux/slab.h>
  27
  28 #include <linux/mfd/arizona/core.h>
  29 #include <linux/mfd/arizona/registers.h>
  30
  31 #include "arizona.h"
  32
  33 static const char *wm5102_core_supplies[] = {
  34         "AVDD",
  35         "DBVDD1",
  36 };
  37
  38 int arizona_clk32k_enable(struct arizona *arizona)
  39 {
  40         int ret = 0;
  41
  42         mutex_lock(&arizona->clk_lock);
  43
  44         arizona->clk32k_ref++;
  45
  46         if (arizona->clk32k_ref == 1) {
  47                 switch (arizona->pdata.clk32k_src) {
  48                 case ARIZONA_32KZ_MCLK1:
  49                         ret = pm_runtime_get_sync(arizona->dev);
  50                         if (ret != 0)
  51                                 goto out;
  52                         break;
  53                 }
  54
  55                 ret = regmap_update_bits(arizona->regmap, ARIZONA_CLOCK_32K_1,
  56                                          ARIZONA_CLK_32K_ENA,
  57                                          ARIZONA_CLK_32K_ENA);
  58         }
  59
  60 out:
  61         if (ret != 0)
  62                 arizona->clk32k_ref--;
  63
  64         mutex_unlock(&arizona->clk_lock);
  65
  66         return ret;
  67 }
  68 EXPORT_SYMBOL_GPL(arizona_clk32k_enable);
  69
  70 int arizona_clk32k_disable(struct arizona *arizona)
  71 {
  72         int ret = 0;
  73
  74         mutex_lock(&arizona->clk_lock);
  75
  76         BUG_ON(arizona->clk32k_ref <= 0);
  77
  78         arizona->clk32k_ref--;
  79
  80         if (arizona->clk32k_ref == 0) {
  81                 regmap_update_bits(arizona->regmap, ARIZONA_CLOCK_32K_1,
  82                                    ARIZONA_CLK_32K_ENA, 0);
  83
  84                 switch (arizona->pdata.clk32k_src) {
  85                 case ARIZONA_32KZ_MCLK1:
  86                         pm_runtime_put_sync(arizona->dev);
  87                         break;
  88                 }
  89         }
  90
  91         mutex_unlock(&arizona->clk_lock);
  92
  93         return ret;
  94 }
  95 EXPORT_SYMBOL_GPL(arizona_clk32k_disable);
  96
  97 static irqreturn_t arizona_clkgen_err(int irq, void *data)
  98 {
  99         struct arizona *arizona = data;
 100
 101         dev_err(arizona->dev, "CLKGEN error\n");
 102
 103         return IRQ_HANDLED;
 104 }
 105
 106 static irqreturn_t arizona_underclocked(int irq, void *data)
 107 {
 108         struct arizona *arizona = data;
 109         unsigned int val;
 110         int ret;
 111
 112         ret = regmap_read(arizona->regmap, ARIZONA_INTERRUPT_RAW_STATUS_8,
 113                           &val);
 114         if (ret != 0) {
 115                 dev_err(arizona->dev, "Failed to read underclock status: %d\n",
 116                         ret);
 117                 return IRQ_NONE;
 118         }
 119
 120         if (val & ARIZONA_AIF3_UNDERCLOCKED_STS)
 121                 dev_err(arizona->dev, "AIF3 underclocked\n");
 122         if (val & ARIZONA_AIF2_UNDERCLOCKED_STS)
 123                 dev_err(arizona->dev, "AIF2 underclocked\n");
 124         if (val & ARIZONA_AIF1_UNDERCLOCKED_STS)
 125                 dev_err(arizona->dev, "AIF1 underclocked\n");
 126         if (val & ARIZONA_ISRC3_UNDERCLOCKED_STS)
 127                 dev_err(arizona->dev, "ISRC3 underclocked\n");
 128         if (val & ARIZONA_ISRC2_UNDERCLOCKED_STS)
 129                 dev_err(arizona->dev, "ISRC2 underclocked\n");
 130         if (val & ARIZONA_ISRC1_UNDERCLOCKED_STS)
 131                 dev_err(arizona->dev, "ISRC1 underclocked\n");
 132         if (val & ARIZONA_FX_UNDERCLOCKED_STS)
 133                 dev_err(arizona->dev, "FX underclocked\n");
 134         if (val & ARIZONA_ASRC_UNDERCLOCKED_STS)
 135                 dev_err(arizona->dev, "ASRC underclocked\n");
 136         if (val & ARIZONA_DAC_UNDERCLOCKED_STS)
 137                 dev_err(arizona->dev, "DAC underclocked\n");
 138         if (val & ARIZONA_ADC_UNDERCLOCKED_STS)
 139                 dev_err(arizona->dev, "ADC underclocked\n");
 140         if (val & ARIZONA_MIXER_UNDERCLOCKED_STS)
 141                 dev_err(arizona->dev, "Mixer dropped sample\n");
 142
 143         return IRQ_HANDLED;
 144 }
 145
 146 static irqreturn_t arizona_overclocked(int irq, void *data)
 147 {
 148         struct arizona *arizona = data;
 149         unsigned int val[2];
 150         int ret;
 151
 152         ret = regmap_bulk_read(arizona->regmap, ARIZONA_INTERRUPT_RAW_STATUS_6,
 153                                &val[0], 2);
 154         if (ret != 0) {
 155                 dev_err(arizona->dev, "Failed to read overclock status: %d\n",
 156                         ret);
 157                 return IRQ_NONE;
 158         }
 159
 160         if (val[0] & ARIZONA_PWM_OVERCLOCKED_STS)
 161                 dev_err(arizona->dev, "PWM overclocked\n");
 162         if (val[0] & ARIZONA_FX_CORE_OVERCLOCKED_STS)
 163                 dev_err(arizona->dev, "FX core overclocked\n");
 164         if (val[0] & ARIZONA_DAC_SYS_OVERCLOCKED_STS)
 165                 dev_err(arizona->dev, "DAC SYS overclocked\n");
 166         if (val[0] & ARIZONA_DAC_WARP_OVERCLOCKED_STS)
 167                 dev_err(arizona->dev, "DAC WARP overclocked\n");
 168         if (val[0] & ARIZONA_ADC_OVERCLOCKED_STS)
 169                 dev_err(arizona->dev, "ADC overclocked\n");
 170         if (val[0] & ARIZONA_MIXER_OVERCLOCKED_STS)
 171                 dev_err(arizona->dev, "Mixer overclocked\n");
 172         if (val[0] & ARIZONA_AIF3_SYNC_OVERCLOCKED_STS)
 173                 dev_err(arizona->dev, "AIF3 overclocked\n");
 174         if (val[0] & ARIZONA_AIF2_SYNC_OVERCLOCKED_STS)
 175                 dev_err(arizona->dev, "AIF2 overclocked\n");
 176         if (val[0] & ARIZONA_AIF1_SYNC_OVERCLOCKED_STS)
 177                 dev_err(arizona->dev, "AIF1 overclocked\n");
 178         if (val[0] & ARIZONA_PAD_CTRL_OVERCLOCKED_STS)
 179                 dev_err(arizona->dev, "Pad control overclocked\n");
 180
 181         if (val[1] & ARIZONA_SLIMBUS_SUBSYS_OVERCLOCKED_STS)
 182                 dev_err(arizona->dev, "Slimbus subsystem overclocked\n");
 183         if (val[1] & ARIZONA_SLIMBUS_ASYNC_OVERCLOCKED_STS)
 184                 dev_err(arizona->dev, "Slimbus async overclocked\n");
 185         if (val[1] & ARIZONA_SLIMBUS_SYNC_OVERCLOCKED_STS)
 186                 dev_err(arizona->dev, "Slimbus sync overclocked\n");
 187         if (val[1] & ARIZONA_ASRC_ASYNC_SYS_OVERCLOCKED_STS)
 188                 dev_err(arizona->dev, "ASRC async system overclocked\n");
 189         if (val[1] & ARIZONA_ASRC_ASYNC_WARP_OVERCLOCKED_STS)
 190                 dev_err(arizona->dev, "ASRC async WARP overclocked\n");
 191         if (val[1] & ARIZONA_ASRC_SYNC_SYS_OVERCLOCKED_STS)
 192                 dev_err(arizona->dev, "ASRC sync system overclocked\n");
 193         if (val[1] & ARIZONA_ASRC_SYNC_WARP_OVERCLOCKED_STS)
 194                 dev_err(arizona->dev, "ASRC sync WARP overclocked\n");
 195         if (val[1] & ARIZONA_ADSP2_1_OVERCLOCKED_STS)
 196                 dev_err(arizona->dev, "DSP1 overclocked\n");
 197         if (val[1] & ARIZONA_ISRC3_OVERCLOCKED_STS)
 198                 dev_err(arizona->dev, "ISRC3 overclocked\n");
 199         if (val[1] & ARIZONA_ISRC2_OVERCLOCKED_STS)
 200                 dev_err(arizona->dev, "ISRC2 overclocked\n");
 201         if (val[1] & ARIZONA_ISRC1_OVERCLOCKED_STS)
 202                 dev_err(arizona->dev, "ISRC1 overclocked\n");
 203
 204         return IRQ_HANDLED;
 205 }
 206
 207 static int arizona_poll_reg(struct arizona *arizona,
 208                             int timeout, unsigned int reg,
 209                             unsigned int mask, unsigned int target)
 210 {
 211         unsigned int val = 0;
 212         int ret, i;
 213
 214         for (i = 0; i < timeout; i++) {
 215                 ret = regmap_read(arizona->regmap, reg, &val);
 216                 if (ret != 0) {
 217                         dev_err(arizona->dev, "Failed to read reg %u: %d\n",
 218                                 reg, ret);
 219                         continue;
 220                 }
 221
 222                 if ((val & mask) == target)
 223                         return 0;
 224
 225                 msleep(1);
 226         }
 227
 228         dev_err(arizona->dev, "Polling reg %u timed out: %x\n", reg, val);
 229         return -ETIMEDOUT;
 230 }
 231
 232 static int arizona_wait_for_boot(struct arizona *arizona)
 233 {
 234         int ret;
 235
 236         /*
 237          * We can't use an interrupt as we need to runtime resume to do so,
 238          * we won't race with the interrupt handler as it'll be blocked on
 239          * runtime resume.
 240          */
 241         ret = arizona_poll_reg(arizona, 5, ARIZONA_INTERRUPT_RAW_STATUS_5,
 242                                ARIZONA_BOOT_DONE_STS, ARIZONA_BOOT_DONE_STS);
 243
 244         if (!ret)
 245                 regmap_write(arizona->regmap, ARIZONA_INTERRUPT_STATUS_5,
 246                              ARIZONA_BOOT_DONE_STS);
 247
 248         pm_runtime_mark_last_busy(arizona->dev);
 249
 250         return ret;
 251 }
 252
 253 static inline void arizona_enable_reset(struct arizona *arizona)
 254 {
 255         if (arizona->pdata.reset)
 256                 gpio_set_value_cansleep(arizona->pdata.reset, 0);
 257 }
 258
 259 static void arizona_disable_reset(struct arizona *arizona)
 260 {
 261         if (arizona->pdata.reset) {
 262                 switch (arizona->type) {
 263                 case WM5110:
 264                 case WM8280:
 265                         /* Meet requirements for minimum reset duration */
 266                         msleep(5);
 267                         break;
 268                 default:
 269                         break;
 270                 }
 271
 272                 gpio_set_value_cansleep(arizona->pdata.reset, 1);
 273                 msleep(1);
 274         }
 275 }
 276
 277 struct arizona_sysclk_state {
 278         unsigned int fll;
 279         unsigned int sysclk;
 280 };
 281
 282 static int arizona_enable_freerun_sysclk(struct arizona *arizona,
 283                                          struct arizona_sysclk_state *state)
 284 {
 285         int ret, err;
 286
 287         /* Cache existing FLL and SYSCLK settings */
 288         ret = regmap_read(arizona->regmap, ARIZONA_FLL1_CONTROL_1, &state->fll);
 289         if (ret) {
 290                 dev_err(arizona->dev, "Failed to cache FLL settings: %d\n",
 291                         ret);
 292                 return ret;
 293         }
 294         ret = regmap_read(arizona->regmap, ARIZONA_SYSTEM_CLOCK_1,
 295                           &state->sysclk);
 296         if (ret) {
 297                 dev_err(arizona->dev, "Failed to cache SYSCLK settings: %d\n",
 298                         ret);
 299                 return ret;
 300         }
 301
 302         /* Start up SYSCLK using the FLL in free running mode */
 303         ret = regmap_write(arizona->regmap, ARIZONA_FLL1_CONTROL_1,
 304                         ARIZONA_FLL1_ENA | ARIZONA_FLL1_FREERUN);
 305         if (ret) {
 306                 dev_err(arizona->dev,
 307                         "Failed to start FLL in freerunning mode: %d\n",
 308                         ret);
 309                 return ret;
 310         }
 311         ret = arizona_poll_reg(arizona, 25, ARIZONA_INTERRUPT_RAW_STATUS_5,
 312                                ARIZONA_FLL1_CLOCK_OK_STS,
 313                                ARIZONA_FLL1_CLOCK_OK_STS);
 314         if (ret) {
 315                 ret = -ETIMEDOUT;
 316                 goto err_fll;
 317         }
 318
 319         ret = regmap_write(arizona->regmap, ARIZONA_SYSTEM_CLOCK_1, 0x0144);
 320         if (ret) {
 321                 dev_err(arizona->dev, "Failed to start SYSCLK: %d\n", ret);
 322                 goto err_fll;
 323         }
 324
 325         return 0;
 326
 327 err_fll:
 328         err = regmap_write(arizona->regmap, ARIZONA_FLL1_CONTROL_1, state->fll);
 329         if (err)
 330                 dev_err(arizona->dev,
 331                         "Failed to re-apply old FLL settings: %d\n", err);
 332
 333         return ret;
 334 }
 335
 336 static int arizona_disable_freerun_sysclk(struct arizona *arizona,
 337                                           struct arizona_sysclk_state *state)
 338 {
 339         int ret;
 340
 341         ret = regmap_write(arizona->regmap, ARIZONA_SYSTEM_CLOCK_1,
 342                            state->sysclk);
 343         if (ret) {
 344                 dev_err(arizona->dev,
 345                         "Failed to re-apply old SYSCLK settings: %d\n", ret);
 346                 return ret;
 347         }
 348
 349         ret = regmap_write(arizona->regmap, ARIZONA_FLL1_CONTROL_1, state->fll);
 350         if (ret) {
 351                 dev_err(arizona->dev,
 352                         "Failed to re-apply old FLL settings: %d\n", ret);
 353                 return ret;
 354         }
 355
 356         return 0;
 357 }
 358
 359 static int wm5102_apply_hardware_patch(struct arizona *arizona)
 360 {
 361         struct arizona_sysclk_state state;
 362         int err, ret;
 363
 364         ret = arizona_enable_freerun_sysclk(arizona, &state);
 365         if (ret)
 366                 return ret;
 367
 368         /* Start the write sequencer and wait for it to finish */
 369         ret = regmap_write(arizona->regmap, ARIZONA_WRITE_SEQUENCER_CTRL_0,
 370                            ARIZONA_WSEQ_ENA | ARIZONA_WSEQ_START | 160);
 371         if (ret) {
 372                 dev_err(arizona->dev, "Failed to start write sequencer: %d\n",
 373                         ret);
 374                 goto err;
 375         }
 376
 377         ret = arizona_poll_reg(arizona, 5, ARIZONA_WRITE_SEQUENCER_CTRL_1,
 378                                ARIZONA_WSEQ_BUSY, 0);
 379         if (ret) {
 380                 regmap_write(arizona->regmap, ARIZONA_WRITE_SEQUENCER_CTRL_0,
 381                              ARIZONA_WSEQ_ABORT);
 382                 ret = -ETIMEDOUT;
 383         }
 384
 385 err:
 386         err = arizona_disable_freerun_sysclk(arizona, &state);
 387
 388         return ret ?: err;
 389 }
 390
 391 /*
 392  * Register patch to some of the CODECs internal write sequences
 393  * to ensure a clean exit from the low power sleep state.
 394  */
 395 static const struct reg_default wm5110_sleep_patch[] = {
 396         { 0x337A, 0xC100 },
 397         { 0x337B, 0x0041 },
 398         { 0x3300, 0xA210 },
 399         { 0x3301, 0x050C },
 400 };
 401
 402 static int wm5110_apply_sleep_patch(struct arizona *arizona)
 403 {
 404         struct arizona_sysclk_state state;
 405         int err, ret;
 406
 407         ret = arizona_enable_freerun_sysclk(arizona, &state);
 408         if (ret)
 409                 return ret;
 410
 411         ret = regmap_multi_reg_write_bypassed(arizona->regmap,
 412                                               wm5110_sleep_patch,
 413                                               ARRAY_SIZE(wm5110_sleep_patch));
 414
 415         err = arizona_disable_freerun_sysclk(arizona, &state);
 416
 417         return ret ?: err;
 418 }
 419
 420 static int wm5102_clear_write_sequencer(struct arizona *arizona)
 421 {
 422         int ret;
 423
 424         ret = regmap_write(arizona->regmap, ARIZONA_WRITE_SEQUENCER_CTRL_3,
 425                            0x0);
 426         if (ret) {
 427                 dev_err(arizona->dev,
 428                         "Failed to clear write sequencer state: %d\n", ret);
 429                 return ret;
 430         }
 431
 432         arizona_enable_reset(arizona);
 433         regulator_disable(arizona->dcvdd);
 434
 435         msleep(20);
 436
 437         ret = regulator_enable(arizona->dcvdd);
 438         if (ret) {
 439                 dev_err(arizona->dev, "Failed to re-enable DCVDD: %d\n", ret);
 440                 return ret;
 441         }
 442         arizona_disable_reset(arizona);
 443
 444         return 0;
 445 }
 446
 447 #ifdef CONFIG_PM
 448 static int arizona_runtime_resume(struct device *dev)
 449 {
 450         struct arizona *arizona = dev_get_drvdata(dev);
 451         int ret;
 452
 453         dev_dbg(arizona->dev, "Leaving AoD mode\n");
 454
 455         if (arizona->has_fully_powered_off) {
 456                 dev_dbg(arizona->dev, "Re-enabling core supplies\n");
 457
 458                 ret = regulator_bulk_enable(arizona->num_core_supplies,
 459                                             arizona->core_supplies);
 460                 if (ret) {
 461                         dev_err(dev, "Failed to enable core supplies: %d\n",
 462                                 ret);
 463                         return ret;
 464                 }
 465         }
 466
 467         ret = regulator_enable(arizona->dcvdd);
 468         if (ret != 0) {
 469                 dev_err(arizona->dev, "Failed to enable DCVDD: %d\n", ret);
 470                 if (arizona->has_fully_powered_off)
 471                         regulator_bulk_disable(arizona->num_core_supplies,
 472                                                arizona->core_supplies);
 473                 return ret;
 474         }
 475
 476         if (arizona->has_fully_powered_off) {
 477                 arizona_disable_reset(arizona);
 478                 enable_irq(arizona->irq);
 479                 arizona->has_fully_powered_off = false;
 480         }
 481
 482         regcache_cache_only(arizona->regmap, false);
 483
 484         switch (arizona->type) {
 485         case WM5102:
 486                 if (arizona->external_dcvdd) {
 487                         ret = regmap_update_bits(arizona->regmap,
 488                                                  ARIZONA_ISOLATION_CONTROL,
 489                                                  ARIZONA_ISOLATE_DCVDD1, 0);
 490                         if (ret != 0) {
 491                                 dev_err(arizona->dev,
 492                                         "Failed to connect DCVDD: %d\n", ret);
 493                                 goto err;
 494                         }
 495                 }
 496
 497                 ret = wm5102_patch(arizona);
 498                 if (ret != 0) {
 499                         dev_err(arizona->dev, "Failed to apply patch: %d\n",
 500                                 ret);
 501                         goto err;
 502                 }
 503
 504                 ret = wm5102_apply_hardware_patch(arizona);
 505                 if (ret) {
 506                         dev_err(arizona->dev,
 507                                 "Failed to apply hardware patch: %d\n",
 508                                 ret);
 509                         goto err;
 510                 }
 511                 break;
 512         case WM5110:
 513         case WM8280:
 514                 ret = arizona_wait_for_boot(arizona);
 515                 if (ret)
 516                         goto err;
 517
 518                 if (arizona->external_dcvdd) {
 519                         ret = regmap_update_bits(arizona->regmap,
 520                                                  ARIZONA_ISOLATION_CONTROL,
 521                                                  ARIZONA_ISOLATE_DCVDD1, 0);
 522                         if (ret) {
 523                                 dev_err(arizona->dev,
 524                                         "Failed to connect DCVDD: %d\n", ret);
 525                                 goto err;
 526                         }
 527                 } else {
 528                         /*
 529                          * As this is only called for the internal regulator
 530                          * (where we know voltage ranges available) it is ok
 531                          * to request an exact range.
 532                          */
 533                         ret = regulator_set_voltage(arizona->dcvdd,
 534                                                     1200000, 1200000);
 535                         if (ret < 0) {
 536                                 dev_err(arizona->dev,
 537                                         "Failed to set resume voltage: %d\n",
 538                                         ret);
 539                                 goto err;
 540                         }
 541                 }
 542
 543                 ret = wm5110_apply_sleep_patch(arizona);
 544                 if (ret) {
 545                         dev_err(arizona->dev,
 546                                 "Failed to re-apply sleep patch: %d\n",
 547                                 ret);
 548                         goto err;
 549                 }
 550                 break;
 551         default:
 552                 ret = arizona_wait_for_boot(arizona);
 553                 if (ret != 0) {
 554                         goto err;
 555                 }
 556
 557                 if (arizona->external_dcvdd) {
 558                         ret = regmap_update_bits(arizona->regmap,
 559                                                  ARIZONA_ISOLATION_CONTROL,
 560                                                  ARIZONA_ISOLATE_DCVDD1, 0);
 561                         if (ret != 0) {
 562                                 dev_err(arizona->dev,
 563                                         "Failed to connect DCVDD: %d\n", ret);
 564                                 goto err;
 565                         }
 566                 }
 567                 break;
 568         }
 569
 570         ret = regcache_sync(arizona->regmap);
 571         if (ret != 0) {
 572                 dev_err(arizona->dev, "Failed to restore register cache\n");
 573                 goto err;
 574         }
 575
 576         return 0;
 577
 578 err:
 579         regcache_cache_only(arizona->regmap, true);
 580         regulator_disable(arizona->dcvdd);
 581         return ret;
 582 }
 583
 584 static int arizona_runtime_suspend(struct device *dev)
 585 {
 586         struct arizona *arizona = dev_get_drvdata(dev);
 587         unsigned int val;
 588         int ret;
 589
 590         dev_dbg(arizona->dev, "Entering AoD mode\n");
 591
 592         ret = regmap_read(arizona->regmap, ARIZONA_JACK_DETECT_ANALOGUE, &val);
 593         if (ret) {
 594                 dev_err(dev, "Failed to check jack det status: %d\n", ret);
 595                 return ret;
 596         }
 597
 598         if (arizona->external_dcvdd) {
 599                 ret = regmap_update_bits(arizona->regmap,
 600                                          ARIZONA_ISOLATION_CONTROL,
 601                                          ARIZONA_ISOLATE_DCVDD1,
 602                                          ARIZONA_ISOLATE_DCVDD1);
 603                 if (ret != 0) {
 604                         dev_err(arizona->dev, "Failed to isolate DCVDD: %d\n",
 605                                 ret);
 606                         return ret;
 607                 }
 608         }
 609
 610         switch (arizona->type) {
 611         case WM5110:
 612         case WM8280:
 613                 if (arizona->external_dcvdd)
 614                         break;
 615
 616                 /*
 617                  * As this is only called for the internal regulator
 618                  * (where we know voltage ranges available) it is ok
 619                  * to request an exact range.
 620                  */
 621                 ret = regulator_set_voltage(arizona->dcvdd, 1175000, 1175000);
 622                 if (ret < 0) {
 623                         dev_err(arizona->dev,
 624                                 "Failed to set suspend voltage: %d\n", ret);
 625                         return ret;
 626                 }
 627                 break;
 628         case WM5102:
 629                 if (!(val & ARIZONA_JD1_ENA)) {
 630                         ret = regmap_write(arizona->regmap,
 631                                            ARIZONA_WRITE_SEQUENCER_CTRL_3, 0x0);
 632                         if (ret) {
 633                                 dev_err(arizona->dev,
 634                                         "Failed to clear write sequencer: %d\n",
 635                                         ret);
 636                                 return ret;
 637                         }
 638                 }
 639                 break;
 640         default:
 641                 break;
 642         }
 643
 644         regcache_cache_only(arizona->regmap, true);
 645         regcache_mark_dirty(arizona->regmap);
 646         regulator_disable(arizona->dcvdd);
 647
 648         /* Allow us to completely power down if no jack detection */
 649         if (!(val & ARIZONA_JD1_ENA)) {
 650                 dev_dbg(arizona->dev, "Fully powering off\n");
 651
 652                 arizona->has_fully_powered_off = true;
 653
 654                 disable_irq_nosync(arizona->irq);
 655                 arizona_enable_reset(arizona);
 656                 regulator_bulk_disable(arizona->num_core_supplies,
 657                                        arizona->core_supplies);
 658         }
 659
 660         return 0;
 661 }
 662 #endif
 663
 664 #ifdef CONFIG_PM_SLEEP
 665 static int arizona_suspend(struct device *dev)
 666 {
 667         struct arizona *arizona = dev_get_drvdata(dev);
 668
 669         dev_dbg(arizona->dev, "Suspend, disabling IRQ\n");
 670         disable_irq(arizona->irq);
 671
 672         return 0;
 673 }
 674
 675 static int arizona_suspend_late(struct device *dev)
 676 {
 677         struct arizona *arizona = dev_get_drvdata(dev);
 678
 679         dev_dbg(arizona->dev, "Late suspend, reenabling IRQ\n");
 680         enable_irq(arizona->irq);
 681
 682         return 0;
 683 }
 684
 685 static int arizona_resume_noirq(struct device *dev)
 686 {
 687         struct arizona *arizona = dev_get_drvdata(dev);
 688
 689         dev_dbg(arizona->dev, "Early resume, disabling IRQ\n");
 690         disable_irq(arizona->irq);
 691
 692         return 0;
 693 }
 694
 695 static int arizona_resume(struct device *dev)
 696 {
 697         struct arizona *arizona = dev_get_drvdata(dev);
 698
 699         dev_dbg(arizona->dev, "Late resume, reenabling IRQ\n");
 700         enable_irq(arizona->irq);
 701
 702         return 0;
 703 }
 704 #endif
 705
 706 const struct dev_pm_ops arizona_pm_ops = {
 707         SET_RUNTIME_PM_OPS(arizona_runtime_suspend,
 708                            arizona_runtime_resume,
 709                            NULL)
 710         SET_SYSTEM_SLEEP_PM_OPS(arizona_suspend, arizona_resume)
 711 #ifdef CONFIG_PM_SLEEP
 712         .suspend_late = arizona_suspend_late,
 713         .resume_noirq = arizona_resume_noirq,
 714 #endif
 715 };
 716 EXPORT_SYMBOL_GPL(arizona_pm_ops);
 717
 718 #ifdef CONFIG_OF
 719 unsigned long arizona_of_get_type(struct device *dev)
 720 {
 721         const struct of_device_id *id = of_match_device(arizona_of_match, dev);
 722
 723         if (id)
 724                 return (unsigned long)id->data;
 725         else
 726                 return 0;
 727 }
 728 EXPORT_SYMBOL_GPL(arizona_of_get_type);
 729
 730 int arizona_of_get_named_gpio(struct arizona *arizona, const char *prop,
 731                               bool mandatory)
 732 {
 733         int gpio;
 734
 735         gpio = of_get_named_gpio(arizona->dev->of_node, prop, 0);
 736         if (gpio < 0) {
 737                 if (mandatory)
 738                         dev_err(arizona->dev,
 739                                 "Mandatory DT gpio %s missing/malformed: %d\n",
 740                                 prop, gpio);
 741
 742                 gpio = 0;
 743         }
 744
 745         return gpio;
 746 }
 747 EXPORT_SYMBOL_GPL(arizona_of_get_named_gpio);
 748
 749 static int arizona_of_get_core_pdata(struct arizona *arizona)
 750 {
 751         struct arizona_pdata *pdata = &arizona->pdata;
 752         struct property *prop;
 753         const __be32 *cur;
 754         u32 val;
 755         int ret, i;
 756         int count = 0;
 757
 758         pdata->reset = arizona_of_get_named_gpio(arizona, "wlf,reset", true);
 759
 760         ret = of_property_read_u32_array(arizona->dev->of_node,
 761                                          "wlf,gpio-defaults",
 762                                          arizona->pdata.gpio_defaults,
 763                                          ARRAY_SIZE(arizona->pdata.gpio_defaults));
 764         if (ret >= 0) {
 765                 /*
 766                  * All values are literal except out of range values
 767                  * which are chip default, translate into platform
 768                  * data which uses 0 as chip default and out of range
 769                  * as zero.
 770                  */
 771                 for (i = 0; i < ARRAY_SIZE(arizona->pdata.gpio_defaults); i++) {
 772                         if (arizona->pdata.gpio_defaults[i] > 0xffff)
 773                                 arizona->pdata.gpio_defaults[i] = 0;
 774                         else if (arizona->pdata.gpio_defaults[i] == 0)
 775                                 arizona->pdata.gpio_defaults[i] = 0x10000;
 776                 }
 777         } else {
 778                 dev_err(arizona->dev, "Failed to parse GPIO defaults: %d\n",
 779                         ret);
 780         }
 781
 782         of_property_for_each_u32(arizona->dev->of_node, "wlf,inmode", prop,
 783                                  cur, val) {
 784                 if (count == ARRAY_SIZE(arizona->pdata.inmode))
 785                         break;
 786
 787                 arizona->pdata.inmode[count] = val;
 788                 count++;
 789         }
 790
 791         count = 0;
 792         of_property_for_each_u32(arizona->dev->of_node, "wlf,dmic-ref", prop,
 793                                  cur, val) {
 794                 if (count == ARRAY_SIZE(arizona->pdata.dmic_ref))
 795                         break;
 796
 797                 arizona->pdata.dmic_ref[count] = val;
 798                 count++;
 799         }
 800
 801         return 0;
 802 }
 803
 804 const struct of_device_id arizona_of_match[] = {
 805         { .compatible = "wlf,wm5102", .data = (void *)WM5102 },
 806         { .compatible = "wlf,wm5110", .data = (void *)WM5110 },
 807         { .compatible = "wlf,wm8280", .data = (void *)WM8280 },
 808         { .compatible = "wlf,wm8997", .data = (void *)WM8997 },
 809         {},
 810 };
 811 EXPORT_SYMBOL_GPL(arizona_of_match);
 812 #else
 813 static inline int arizona_of_get_core_pdata(struct arizona *arizona)
 814 {
 815         return 0;
 816 }
 817 #endif
 818
 819 static const struct mfd_cell early_devs[] = {
 820         { .name = "arizona-ldo1" },
 821 };
 822
 823 static const char *wm5102_supplies[] = {
 824         "MICVDD",
 825         "DBVDD2",
 826         "DBVDD3",
 827         "CPVDD",
 828         "SPKVDDL",
 829         "SPKVDDR",
 830 };
 831
 832 static const struct mfd_cell wm5102_devs[] = {
 833         { .name = "arizona-micsupp" },
 834         {
 835                 .name = "arizona-extcon",
 836                 .parent_supplies = wm5102_supplies,
 837                 .num_parent_supplies = 1, /* We only need MICVDD */
 838         },
 839         { .name = "arizona-gpio" },
 840         { .name = "arizona-haptics" },
 841         { .name = "arizona-pwm" },
 842         {
 843                 .name = "wm5102-codec",
 844                 .parent_supplies = wm5102_supplies,
 845                 .num_parent_supplies = ARRAY_SIZE(wm5102_supplies),
 846         },
 847 };
 848
 849 static const struct mfd_cell wm5110_devs[] = {
 850         { .name = "arizona-micsupp" },
 851         {
 852                 .name = "arizona-extcon",
 853                 .parent_supplies = wm5102_supplies,
 854                 .num_parent_supplies = 1, /* We only need MICVDD */
 855         },
 856         { .name = "arizona-gpio" },
 857         { .name = "arizona-haptics" },
 858         { .name = "arizona-pwm" },
 859         {
 860                 .name = "wm5110-codec",
 861                 .parent_supplies = wm5102_supplies,
 862                 .num_parent_supplies = ARRAY_SIZE(wm5102_supplies),
 863         },
 864 };
 865
 866 static const char *wm8997_supplies[] = {
 867         "MICVDD",
 868         "DBVDD2",
 869         "CPVDD",
 870         "SPKVDD",
 871 };
 872
 873 static const struct mfd_cell wm8997_devs[] = {
 874         { .name = "arizona-micsupp" },
 875         {
 876                 .name = "arizona-extcon",
 877                 .parent_supplies = wm8997_supplies,
 878                 .num_parent_supplies = 1, /* We only need MICVDD */
 879         },
 880         { .name = "arizona-gpio" },
 881         { .name = "arizona-haptics" },
 882         { .name = "arizona-pwm" },
 883         {
 884                 .name = "wm8997-codec",
 885                 .parent_supplies = wm8997_supplies,
 886                 .num_parent_supplies = ARRAY_SIZE(wm8997_supplies),
 887         },
 888 };
 889
 890 int arizona_dev_init(struct arizona *arizona)
 891 {
 892         struct device *dev = arizona->dev;
 893         const char *type_name;
 894         unsigned int reg, val;
 895         int (*apply_patch)(struct arizona *) = NULL;
 896         int ret, i;
 897
 898         dev_set_drvdata(arizona->dev, arizona);
 899         mutex_init(&arizona->clk_lock);
 900
 901         if (dev_get_platdata(arizona->dev))
 902                 memcpy(&arizona->pdata, dev_get_platdata(arizona->dev),
 903                        sizeof(arizona->pdata));
 904         else
 905                 arizona_of_get_core_pdata(arizona);
 906
 907         regcache_cache_only(arizona->regmap, true);
 908
 909         switch (arizona->type) {
 910         case WM5102:
 911         case WM5110:
 912         case WM8280:
 913         case WM8997:
 914                 for (i = 0; i < ARRAY_SIZE(wm5102_core_supplies); i++)
 915                         arizona->core_supplies[i].supply
 916                                 = wm5102_core_supplies[i];
 917                 arizona->num_core_supplies = ARRAY_SIZE(wm5102_core_supplies);
 918                 break;
 919         default:
 920                 dev_err(arizona->dev, "Unknown device type %d\n",
 921                         arizona->type);
 922                 return -EINVAL;
 923         }
 924
 925         /* Mark DCVDD as external, LDO1 driver will clear if internal */
 926         arizona->external_dcvdd = true;
 927
 928         ret = mfd_add_devices(arizona->dev, -1, early_devs,
 929                               ARRAY_SIZE(early_devs), NULL, 0, NULL);
 930         if (ret != 0) {
 931                 dev_err(dev, "Failed to add early children: %d\n", ret);
 932                 return ret;
 933         }
 934
 935         ret = devm_regulator_bulk_get(dev, arizona->num_core_supplies,
 936                                       arizona->core_supplies);
 937         if (ret != 0) {
 938                 dev_err(dev, "Failed to request core supplies: %d\n",
 939                         ret);
 940                 goto err_early;
 941         }
 942
 943         /**
 944          * Don't use devres here because the only device we have to get
 945          * against is the MFD device and DCVDD will likely be supplied by
 946          * one of its children. Meaning that the regulator will be
 947          * destroyed by the time devres calls regulator put.
 948          */
 949         arizona->dcvdd = regulator_get(arizona->dev, "DCVDD");
 950         if (IS_ERR(arizona->dcvdd)) {
 951                 ret = PTR_ERR(arizona->dcvdd);
 952                 dev_err(dev, "Failed to request DCVDD: %d\n", ret);
 953                 goto err_early;
 954         }
 955
 956         if (arizona->pdata.reset) {
 957                 /* Start out with /RESET low to put the chip into reset */
 958                 ret = devm_gpio_request_one(arizona->dev, arizona->pdata.reset,
 959                                             GPIOF_DIR_OUT | GPIOF_INIT_LOW,
 960                                             "arizona /RESET");
 961                 if (ret != 0) {
 962                         dev_err(dev, "Failed to request /RESET: %d\n", ret);
 963                         goto err_dcvdd;
 964                 }
 965         }
 966
 967         ret = regulator_bulk_enable(arizona->num_core_supplies,
 968                                     arizona->core_supplies);
 969         if (ret != 0) {
 970                 dev_err(dev, "Failed to enable core supplies: %d\n",
 971                         ret);
 972                 goto err_dcvdd;
 973         }
 974
 975         ret = regulator_enable(arizona->dcvdd);
 976         if (ret != 0) {
 977                 dev_err(dev, "Failed to enable DCVDD: %d\n", ret);
 978                 goto err_enable;
 979         }
 980
 981         arizona_disable_reset(arizona);
 982
 983         regcache_cache_only(arizona->regmap, false);
 984
 985         /* Verify that this is a chip we know about */
 986         ret = regmap_read(arizona->regmap, ARIZONA_SOFTWARE_RESET, &reg);
 987         if (ret != 0) {
 988                 dev_err(dev, "Failed to read ID register: %d\n", ret);
 989                 goto err_reset;
 990         }
 991
 992         switch (reg) {
 993         case 0x5102:
 994         case 0x5110:
 995         case 0x8997:
 996                 break;
 997         default:
 998                 dev_err(arizona->dev, "Unknown device ID: %x\n", reg);
 999                 goto err_reset;
1000         }
1001
1002         /* If we have a /RESET GPIO we'll already be reset */
1003         if (!arizona->pdata.reset) {
1004                 ret = regmap_write(arizona->regmap, ARIZONA_SOFTWARE_RESET, 0);
1005                 if (ret != 0) {
1006                         dev_err(dev, "Failed to reset device: %d\n", ret);
1007                         goto err_reset;
1008                 }
1009
1010                 msleep(1);
1011         }
1012
1013         /* Ensure device startup is complete */
1014         switch (arizona->type) {
1015         case WM5102:
1016                 ret = regmap_read(arizona->regmap,
1017                                   ARIZONA_WRITE_SEQUENCER_CTRL_3, &val);
1018                 if (ret) {
1019                         dev_err(dev,
1020                                 "Failed to check write sequencer state: %d\n",
1021                                 ret);
1022                 } else if (val & 0x01) {
1023                         ret = wm5102_clear_write_sequencer(arizona);
1024                         if (ret)
1025                                 return ret;
1026                 }
1027                 break;
1028         default:
1029                 break;
1030         }
1031
1032         ret = arizona_wait_for_boot(arizona);
1033         if (ret) {
1034                 dev_err(arizona->dev, "Device failed initial boot: %d\n", ret);
1035                 goto err_reset;
1036         }
1037
1038         /* Read the device ID information & do device specific stuff */
1039         ret = regmap_read(arizona->regmap, ARIZONA_SOFTWARE_RESET, &reg);
1040         if (ret != 0) {
1041                 dev_err(dev, "Failed to read ID register: %d\n", ret);
1042                 goto err_reset;
1043         }
1044
1045         ret = regmap_read(arizona->regmap, ARIZONA_DEVICE_REVISION,
1046                           &arizona->rev);
1047         if (ret != 0) {
1048                 dev_err(dev, "Failed to read revision register: %d\n", ret);
1049                 goto err_reset;
1050         }
1051         arizona->rev &= ARIZONA_DEVICE_REVISION_MASK;
1052
1053         switch (reg) {
1054 #ifdef CONFIG_MFD_WM5102
1055         case 0x5102:
1056                 type_name = "WM5102";
1057                 if (arizona->type != WM5102) {
1058                         dev_err(arizona->dev, "WM5102 registered as %d\n",
1059                                 arizona->type);
1060                         arizona->type = WM5102;
1061                 }
1062                 apply_patch = wm5102_patch;
1063                 arizona->rev &= 0x7;
1064                 break;
1065 #endif
1066 #ifdef CONFIG_MFD_WM5110
1067         case 0x5110:
1068                 switch (arizona->type) {
1069                 case WM5110:
1070                         type_name = "WM5110";
1071                         break;
1072                 case WM8280:
1073                         type_name = "WM8280";
1074                         break;
1075                 default:
1076                         type_name = "WM5110";
1077                         dev_err(arizona->dev, "WM5110 registered as %d\n",
1078                                 arizona->type);
1079                         arizona->type = WM5110;
1080                         break;
1081                 }
1082                 apply_patch = wm5110_patch;
1083                 break;
1084 #endif
1085 #ifdef CONFIG_MFD_WM8997
1086         case 0x8997:
1087                 type_name = "WM8997";
1088                 if (arizona->type != WM8997) {
1089                         dev_err(arizona->dev, "WM8997 registered as %d\n",
1090                                 arizona->type);
1091                         arizona->type = WM8997;
1092                 }
1093                 apply_patch = wm8997_patch;
1094                 break;
1095 #endif
1096         default:
1097                 dev_err(arizona->dev, "Unknown device ID %x\n", reg);
1098                 goto err_reset;
1099         }
1100
1101         dev_info(dev, "%s revision %c\n", type_name, arizona->rev + 'A');
1102
1103         if (apply_patch) {
1104                 ret = apply_patch(arizona);
1105                 if (ret != 0) {
1106                         dev_err(arizona->dev, "Failed to apply patch: %d\n",
1107                                 ret);
1108                         goto err_reset;
1109                 }
1110
1111                 switch (arizona->type) {
1112                 case WM5102:
1113                         ret = wm5102_apply_hardware_patch(arizona);
1114                         if (ret) {
1115                                 dev_err(arizona->dev,
1116                                         "Failed to apply hardware patch: %d\n",
1117                                         ret);
1118                                 goto err_reset;
1119                         }
1120                         break;
1121                 case WM5110:
1122                 case WM8280:
1123                         ret = wm5110_apply_sleep_patch(arizona);
1124                         if (ret) {
1125                                 dev_err(arizona->dev,
1126                                         "Failed to apply sleep patch: %d\n",
1127                                         ret);
1128                                 goto err_reset;
1129                         }
1130                         break;
1131                 default:
1132                         break;
1133                 }
1134         }
1135
1136         for (i = 0; i < ARRAY_SIZE(arizona->pdata.gpio_defaults); i++) {
1137                 if (!arizona->pdata.gpio_defaults[i])
1138                         continue;
1139
1140                 regmap_write(arizona->regmap, ARIZONA_GPIO1_CTRL + i,
1141                              arizona->pdata.gpio_defaults[i]);
1142         }
1143
1144         /* Chip default */
1145         if (!arizona->pdata.clk32k_src)
1146                 arizona->pdata.clk32k_src = ARIZONA_32KZ_MCLK2;
1147
1148         switch (arizona->pdata.clk32k_src) {
1149         case ARIZONA_32KZ_MCLK1:
1150         case ARIZONA_32KZ_MCLK2:
1151                 regmap_update_bits(arizona->regmap, ARIZONA_CLOCK_32K_1,
1152                                    ARIZONA_CLK_32K_SRC_MASK,
1153                                    arizona->pdata.clk32k_src - 1);
1154                 arizona_clk32k_enable(arizona);
1155                 break;
1156         case ARIZONA_32KZ_NONE:
1157                 regmap_update_bits(arizona->regmap, ARIZONA_CLOCK_32K_1,
1158                                    ARIZONA_CLK_32K_SRC_MASK, 2);
1159                 break;
1160         default:
1161                 dev_err(arizona->dev, "Invalid 32kHz clock source: %d\n",
1162                         arizona->pdata.clk32k_src);
1163                 ret = -EINVAL;
1164                 goto err_reset;
1165         }
1166
1167         for (i = 0; i < ARIZONA_MAX_MICBIAS; i++) {
1168                 if (!arizona->pdata.micbias[i].mV &&
1169                     !arizona->pdata.micbias[i].bypass)
1170                         continue;
1171
1172                 /* Apply default for bypass mode */
1173                 if (!arizona->pdata.micbias[i].mV)
1174                         arizona->pdata.micbias[i].mV = 2800;
1175
1176                 val = (arizona->pdata.micbias[i].mV - 1500) / 100;
1177
1178                 val <<= ARIZONA_MICB1_LVL_SHIFT;
1179
1180                 if (arizona->pdata.micbias[i].ext_cap)
1181                         val |= ARIZONA_MICB1_EXT_CAP;
1182
1183                 if (arizona->pdata.micbias[i].discharge)
1184                         val |= ARIZONA_MICB1_DISCH;
1185
1186                 if (arizona->pdata.micbias[i].soft_start)
1187                         val |= ARIZONA_MICB1_RATE;
1188
1189                 if (arizona->pdata.micbias[i].bypass)
1190                         val |= ARIZONA_MICB1_BYPASS;
1191
1192                 regmap_update_bits(arizona->regmap,
1193                                    ARIZONA_MIC_BIAS_CTRL_1 + i,
1194                                    ARIZONA_MICB1_LVL_MASK |
1195                                    ARIZONA_MICB1_EXT_CAP |
1196                                    ARIZONA_MICB1_DISCH |
1197                                    ARIZONA_MICB1_BYPASS |
1198                                    ARIZONA_MICB1_RATE, val);
1199         }
1200
1201         for (i = 0; i < ARIZONA_MAX_INPUT; i++) {
1202                 /* Default for both is 0 so noop with defaults */
1203                 val = arizona->pdata.dmic_ref[i]
1204                         << ARIZONA_IN1_DMIC_SUP_SHIFT;
1205                 if (arizona->pdata.inmode[i] & ARIZONA_INMODE_DMIC)
1206                         val |= 1 << ARIZONA_IN1_MODE_SHIFT;
1207                 if (arizona->pdata.inmode[i] & ARIZONA_INMODE_SE)
1208                         val |= 1 << ARIZONA_IN1_SINGLE_ENDED_SHIFT;
1209
1210                 regmap_update_bits(arizona->regmap,
1211                                    ARIZONA_IN1L_CONTROL + (i * 8),
1212                                    ARIZONA_IN1_DMIC_SUP_MASK |
1213                                    ARIZONA_IN1_MODE_MASK |
1214                                    ARIZONA_IN1_SINGLE_ENDED_MASK, val);
1215         }
1216
1217         for (i = 0; i < ARIZONA_MAX_OUTPUT; i++) {
1218                 /* Default is 0 so noop with defaults */
1219                 if (arizona->pdata.out_mono[i])
1220                         val = ARIZONA_OUT1_MONO;
1221                 else
1222                         val = 0;
1223
1224                 regmap_update_bits(arizona->regmap,
1225                                    ARIZONA_OUTPUT_PATH_CONFIG_1L + (i * 8),
1226                                    ARIZONA_OUT1_MONO, val);
1227         }
1228
1229         for (i = 0; i < ARIZONA_MAX_PDM_SPK; i++) {
1230                 if (arizona->pdata.spk_mute[i])
1231                         regmap_update_bits(arizona->regmap,
1232                                            ARIZONA_PDM_SPK1_CTRL_1 + (i * 2),
1233                                            ARIZONA_SPK1_MUTE_ENDIAN_MASK |
1234                                            ARIZONA_SPK1_MUTE_SEQ1_MASK,
1235                                            arizona->pdata.spk_mute[i]);
1236
1237                 if (arizona->pdata.spk_fmt[i])
1238                         regmap_update_bits(arizona->regmap,
1239                                            ARIZONA_PDM_SPK1_CTRL_2 + (i * 2),
1240                                            ARIZONA_SPK1_FMT_MASK,
1241                                            arizona->pdata.spk_fmt[i]);
1242         }
1243
1244         pm_runtime_set_active(arizona->dev);
1245         pm_runtime_enable(arizona->dev);
1246
1247         /* Set up for interrupts */
1248         ret = arizona_irq_init(arizona);
1249         if (ret != 0)
1250                 goto err_reset;
1251
1252         pm_runtime_set_autosuspend_delay(arizona->dev, 100);
1253         pm_runtime_use_autosuspend(arizona->dev);
1254
1255         arizona_request_irq(arizona, ARIZONA_IRQ_CLKGEN_ERR, "CLKGEN error",
1256                             arizona_clkgen_err, arizona);
1257         arizona_request_irq(arizona, ARIZONA_IRQ_OVERCLOCKED, "Overclocked",
1258                             arizona_overclocked, arizona);
1259         arizona_request_irq(arizona, ARIZONA_IRQ_UNDERCLOCKED, "Underclocked",
1260                             arizona_underclocked, arizona);
1261
1262         switch (arizona->type) {
1263         case WM5102:
1264                 ret = mfd_add_devices(arizona->dev, -1, wm5102_devs,
1265                                       ARRAY_SIZE(wm5102_devs), NULL, 0, NULL);
1266                 break;
1267         case WM5110:
1268         case WM8280:
1269                 ret = mfd_add_devices(arizona->dev, -1, wm5110_devs,
1270                                       ARRAY_SIZE(wm5110_devs), NULL, 0, NULL);
1271                 break;
1272         case WM8997:
1273                 ret = mfd_add_devices(arizona->dev, -1, wm8997_devs,
1274                                       ARRAY_SIZE(wm8997_devs), NULL, 0, NULL);
1275                 break;
1276         }
1277
1278         if (ret != 0) {
1279                 dev_err(arizona->dev, "Failed to add subdevices: %d\n", ret);
1280                 goto err_irq;
1281         }
1282
1283         return 0;
1284
1285 err_irq:
1286         arizona_irq_exit(arizona);
1287 err_reset:
1288         arizona_enable_reset(arizona);
1289         regulator_disable(arizona->dcvdd);
1290 err_enable:
1291         regulator_bulk_disable(arizona->num_core_supplies,
1292                                arizona->core_supplies);
1293 err_dcvdd:
1294         regulator_put(arizona->dcvdd);
1295 err_early:
1296         mfd_remove_devices(dev);
1297         return ret;
1298 }
1299 EXPORT_SYMBOL_GPL(arizona_dev_init);
1300
1301 int arizona_dev_exit(struct arizona *arizona)
1302 {
1303         pm_runtime_disable(arizona->dev);
1304
1305         regulator_disable(arizona->dcvdd);
1306         regulator_put(arizona->dcvdd);
1307
1308         mfd_remove_devices(arizona->dev);
1309         arizona_free_irq(arizona, ARIZONA_IRQ_UNDERCLOCKED, arizona);
1310         arizona_free_irq(arizona, ARIZONA_IRQ_OVERCLOCKED, arizona);
1311         arizona_free_irq(arizona, ARIZONA_IRQ_CLKGEN_ERR, arizona);
1312         arizona_irq_exit(arizona);
1313         arizona_enable_reset(arizona);
1314
1315         regulator_bulk_disable(arizona->num_core_supplies,
1316                                arizona->core_supplies);
1317         return 0;
1318 }
1319 EXPORT_SYMBOL_GPL(arizona_dev_exit);