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 int arizona_apply_hardware_patch(struct arizona* arizona)
 254 {
 255         unsigned int fll, sysclk;
 256         int ret, err;
 257
 258         /* Cache existing FLL and SYSCLK settings */
 259         ret = regmap_read(arizona->regmap, ARIZONA_FLL1_CONTROL_1, &fll);
 260         if (ret != 0) {
 261                 dev_err(arizona->dev, "Failed to cache FLL settings: %d\n",
 262                         ret);
 263                 return ret;
 264         }
 265         ret = regmap_read(arizona->regmap, ARIZONA_SYSTEM_CLOCK_1, &sysclk);
 266         if (ret != 0) {
 267                 dev_err(arizona->dev, "Failed to cache SYSCLK settings: %d\n",
 268                         ret);
 269                 return ret;
 270         }
 271
 272         /* Start up SYSCLK using the FLL in free running mode */
 273         ret = regmap_write(arizona->regmap, ARIZONA_FLL1_CONTROL_1,
 274                         ARIZONA_FLL1_ENA | ARIZONA_FLL1_FREERUN);
 275         if (ret != 0) {
 276                 dev_err(arizona->dev,
 277                         "Failed to start FLL in freerunning mode: %d\n",
 278                         ret);
 279                 return ret;
 280         }
 281         ret = arizona_poll_reg(arizona, 25, ARIZONA_INTERRUPT_RAW_STATUS_5,
 282                                ARIZONA_FLL1_CLOCK_OK_STS,
 283                                ARIZONA_FLL1_CLOCK_OK_STS);
 284         if (ret != 0) {
 285                 ret = -ETIMEDOUT;
 286                 goto err_fll;
 287         }
 288
 289         ret = regmap_write(arizona->regmap, ARIZONA_SYSTEM_CLOCK_1, 0x0144);
 290         if (ret != 0) {
 291                 dev_err(arizona->dev, "Failed to start SYSCLK: %d\n", ret);
 292                 goto err_fll;
 293         }
 294
 295         /* Start the write sequencer and wait for it to finish */
 296         ret = regmap_write(arizona->regmap, ARIZONA_WRITE_SEQUENCER_CTRL_0,
 297                         ARIZONA_WSEQ_ENA | ARIZONA_WSEQ_START | 160);
 298         if (ret != 0) {
 299                 dev_err(arizona->dev, "Failed to start write sequencer: %d\n",
 300                         ret);
 301                 goto err_sysclk;
 302         }
 303         ret = arizona_poll_reg(arizona, 5, ARIZONA_WRITE_SEQUENCER_CTRL_1,
 304                                ARIZONA_WSEQ_BUSY, 0);
 305         if (ret != 0) {
 306                 regmap_write(arizona->regmap, ARIZONA_WRITE_SEQUENCER_CTRL_0,
 307                                 ARIZONA_WSEQ_ABORT);
 308                 ret = -ETIMEDOUT;
 309         }
 310
 311 err_sysclk:
 312         err = regmap_write(arizona->regmap, ARIZONA_SYSTEM_CLOCK_1, sysclk);
 313         if (err != 0) {
 314                 dev_err(arizona->dev,
 315                         "Failed to re-apply old SYSCLK settings: %d\n",
 316                         err);
 317         }
 318
 319 err_fll:
 320         err = regmap_write(arizona->regmap, ARIZONA_FLL1_CONTROL_1, fll);
 321         if (err != 0) {
 322                 dev_err(arizona->dev,
 323                         "Failed to re-apply old FLL settings: %d\n",
 324                         err);
 325         }
 326
 327         if (ret != 0)
 328                 return ret;
 329         else
 330                 return err;
 331 }
 332
 333 #ifdef CONFIG_PM
 334 static int arizona_runtime_resume(struct device *dev)
 335 {
 336         struct arizona *arizona = dev_get_drvdata(dev);
 337         int ret;
 338
 339         dev_dbg(arizona->dev, "Leaving AoD mode\n");
 340
 341         ret = regulator_enable(arizona->dcvdd);
 342         if (ret != 0) {
 343                 dev_err(arizona->dev, "Failed to enable DCVDD: %d\n", ret);
 344                 return ret;
 345         }
 346
 347         regcache_cache_only(arizona->regmap, false);
 348
 349         switch (arizona->type) {
 350         case WM5102:
 351                 if (arizona->external_dcvdd) {
 352                         ret = regmap_update_bits(arizona->regmap,
 353                                                  ARIZONA_ISOLATION_CONTROL,
 354                                                  ARIZONA_ISOLATE_DCVDD1, 0);
 355                         if (ret != 0) {
 356                                 dev_err(arizona->dev,
 357                                         "Failed to connect DCVDD: %d\n", ret);
 358                                 goto err;
 359                         }
 360                 }
 361
 362                 ret = wm5102_patch(arizona);
 363                 if (ret != 0) {
 364                         dev_err(arizona->dev, "Failed to apply patch: %d\n",
 365                                 ret);
 366                         goto err;
 367                 }
 368
 369                 ret = arizona_apply_hardware_patch(arizona);
 370                 if (ret != 0) {
 371                         dev_err(arizona->dev,
 372                                 "Failed to apply hardware patch: %d\n",
 373                                 ret);
 374                         goto err;
 375                 }
 376                 break;
 377         default:
 378                 ret = arizona_wait_for_boot(arizona);
 379                 if (ret != 0) {
 380                         goto err;
 381                 }
 382
 383                 if (arizona->external_dcvdd) {
 384                         ret = regmap_update_bits(arizona->regmap,
 385                                                  ARIZONA_ISOLATION_CONTROL,
 386                                                  ARIZONA_ISOLATE_DCVDD1, 0);
 387                         if (ret != 0) {
 388                                 dev_err(arizona->dev,
 389                                         "Failed to connect DCVDD: %d\n", ret);
 390                                 goto err;
 391                         }
 392                 }
 393                 break;
 394         }
 395
 396         ret = regcache_sync(arizona->regmap);
 397         if (ret != 0) {
 398                 dev_err(arizona->dev, "Failed to restore register cache\n");
 399                 goto err;
 400         }
 401
 402         return 0;
 403
 404 err:
 405         regcache_cache_only(arizona->regmap, true);
 406         regulator_disable(arizona->dcvdd);
 407         return ret;
 408 }
 409
 410 static int arizona_runtime_suspend(struct device *dev)
 411 {
 412         struct arizona *arizona = dev_get_drvdata(dev);
 413         int ret;
 414
 415         dev_dbg(arizona->dev, "Entering AoD mode\n");
 416
 417         if (arizona->external_dcvdd) {
 418                 ret = regmap_update_bits(arizona->regmap,
 419                                          ARIZONA_ISOLATION_CONTROL,
 420                                          ARIZONA_ISOLATE_DCVDD1,
 421                                          ARIZONA_ISOLATE_DCVDD1);
 422                 if (ret != 0) {
 423                         dev_err(arizona->dev, "Failed to isolate DCVDD: %d\n",
 424                                 ret);
 425                         return ret;
 426                 }
 427         }
 428
 429         regcache_cache_only(arizona->regmap, true);
 430         regcache_mark_dirty(arizona->regmap);
 431         regulator_disable(arizona->dcvdd);
 432
 433         return 0;
 434 }
 435 #endif
 436
 437 #ifdef CONFIG_PM_SLEEP
 438 static int arizona_suspend(struct device *dev)
 439 {
 440         struct arizona *arizona = dev_get_drvdata(dev);
 441
 442         dev_dbg(arizona->dev, "Suspend, disabling IRQ\n");
 443         disable_irq(arizona->irq);
 444
 445         return 0;
 446 }
 447
 448 static int arizona_suspend_late(struct device *dev)
 449 {
 450         struct arizona *arizona = dev_get_drvdata(dev);
 451
 452         dev_dbg(arizona->dev, "Late suspend, reenabling IRQ\n");
 453         enable_irq(arizona->irq);
 454
 455         return 0;
 456 }
 457
 458 static int arizona_resume_noirq(struct device *dev)
 459 {
 460         struct arizona *arizona = dev_get_drvdata(dev);
 461
 462         dev_dbg(arizona->dev, "Early resume, disabling IRQ\n");
 463         disable_irq(arizona->irq);
 464
 465         return 0;
 466 }
 467
 468 static int arizona_resume(struct device *dev)
 469 {
 470         struct arizona *arizona = dev_get_drvdata(dev);
 471
 472         dev_dbg(arizona->dev, "Late resume, reenabling IRQ\n");
 473         enable_irq(arizona->irq);
 474
 475         return 0;
 476 }
 477 #endif
 478
 479 const struct dev_pm_ops arizona_pm_ops = {
 480         SET_RUNTIME_PM_OPS(arizona_runtime_suspend,
 481                            arizona_runtime_resume,
 482                            NULL)
 483         SET_SYSTEM_SLEEP_PM_OPS(arizona_suspend, arizona_resume)
 484 #ifdef CONFIG_PM_SLEEP
 485         .suspend_late = arizona_suspend_late,
 486         .resume_noirq = arizona_resume_noirq,
 487 #endif
 488 };
 489 EXPORT_SYMBOL_GPL(arizona_pm_ops);
 490
 491 #ifdef CONFIG_OF
 492 unsigned long arizona_of_get_type(struct device *dev)
 493 {
 494         const struct of_device_id *id = of_match_device(arizona_of_match, dev);
 495
 496         if (id)
 497                 return (unsigned long)id->data;
 498         else
 499                 return 0;
 500 }
 501 EXPORT_SYMBOL_GPL(arizona_of_get_type);
 502
 503 int arizona_of_get_named_gpio(struct arizona *arizona, const char *prop,
 504                               bool mandatory)
 505 {
 506         int gpio;
 507
 508         gpio = of_get_named_gpio(arizona->dev->of_node, prop, 0);
 509         if (gpio < 0) {
 510                 if (mandatory)
 511                         dev_err(arizona->dev,
 512                                 "Mandatory DT gpio %s missing/malformed: %d\n",
 513                                 prop, gpio);
 514
 515                 gpio = 0;
 516         }
 517
 518         return gpio;
 519 }
 520 EXPORT_SYMBOL_GPL(arizona_of_get_named_gpio);
 521
 522 static int arizona_of_get_core_pdata(struct arizona *arizona)
 523 {
 524         struct arizona_pdata *pdata = &arizona->pdata;
 525         struct property *prop;
 526         const __be32 *cur;
 527         u32 val;
 528         int ret, i;
 529         int count = 0;
 530
 531         pdata->reset = arizona_of_get_named_gpio(arizona, "wlf,reset", true);
 532
 533         ret = of_property_read_u32_array(arizona->dev->of_node,
 534                                          "wlf,gpio-defaults",
 535                                          arizona->pdata.gpio_defaults,
 536                                          ARRAY_SIZE(arizona->pdata.gpio_defaults));
 537         if (ret >= 0) {
 538                 /*
 539                  * All values are literal except out of range values
 540                  * which are chip default, translate into platform
 541                  * data which uses 0 as chip default and out of range
 542                  * as zero.
 543                  */
 544                 for (i = 0; i < ARRAY_SIZE(arizona->pdata.gpio_defaults); i++) {
 545                         if (arizona->pdata.gpio_defaults[i] > 0xffff)
 546                                 arizona->pdata.gpio_defaults[i] = 0;
 547                         else if (arizona->pdata.gpio_defaults[i] == 0)
 548                                 arizona->pdata.gpio_defaults[i] = 0x10000;
 549                 }
 550         } else {
 551                 dev_err(arizona->dev, "Failed to parse GPIO defaults: %d\n",
 552                         ret);
 553         }
 554
 555         of_property_for_each_u32(arizona->dev->of_node, "wlf,inmode", prop,
 556                                  cur, val) {
 557                 if (count == ARRAY_SIZE(arizona->pdata.inmode))
 558                         break;
 559
 560                 arizona->pdata.inmode[count] = val;
 561                 count++;
 562         }
 563
 564         count = 0;
 565         of_property_for_each_u32(arizona->dev->of_node, "wlf,dmic-ref", prop,
 566                                  cur, val) {
 567                 if (count == ARRAY_SIZE(arizona->pdata.dmic_ref))
 568                         break;
 569
 570                 arizona->pdata.dmic_ref[count] = val;
 571                 count++;
 572         }
 573
 574         return 0;
 575 }
 576
 577 const struct of_device_id arizona_of_match[] = {
 578         { .compatible = "wlf,wm5102", .data = (void *)WM5102 },
 579         { .compatible = "wlf,wm5110", .data = (void *)WM5110 },
 580         { .compatible = "wlf,wm8280", .data = (void *)WM8280 },
 581         { .compatible = "wlf,wm8997", .data = (void *)WM8997 },
 582         {},
 583 };
 584 EXPORT_SYMBOL_GPL(arizona_of_match);
 585 #else
 586 static inline int arizona_of_get_core_pdata(struct arizona *arizona)
 587 {
 588         return 0;
 589 }
 590 #endif
 591
 592 static const struct mfd_cell early_devs[] = {
 593         { .name = "arizona-ldo1" },
 594 };
 595
 596 static const char *wm5102_supplies[] = {
 597         "MICVDD",
 598         "DBVDD2",
 599         "DBVDD3",
 600         "CPVDD",
 601         "SPKVDDL",
 602         "SPKVDDR",
 603 };
 604
 605 static const struct mfd_cell wm5102_devs[] = {
 606         { .name = "arizona-micsupp" },
 607         {
 608                 .name = "arizona-extcon",
 609                 .parent_supplies = wm5102_supplies,
 610                 .num_parent_supplies = 1, /* We only need MICVDD */
 611         },
 612         { .name = "arizona-gpio" },
 613         { .name = "arizona-haptics" },
 614         { .name = "arizona-pwm" },
 615         {
 616                 .name = "wm5102-codec",
 617                 .parent_supplies = wm5102_supplies,
 618                 .num_parent_supplies = ARRAY_SIZE(wm5102_supplies),
 619         },
 620 };
 621
 622 static const struct mfd_cell wm5110_devs[] = {
 623         { .name = "arizona-micsupp" },
 624         {
 625                 .name = "arizona-extcon",
 626                 .parent_supplies = wm5102_supplies,
 627                 .num_parent_supplies = 1, /* We only need MICVDD */
 628         },
 629         { .name = "arizona-gpio" },
 630         { .name = "arizona-haptics" },
 631         { .name = "arizona-pwm" },
 632         {
 633                 .name = "wm5110-codec",
 634                 .parent_supplies = wm5102_supplies,
 635                 .num_parent_supplies = ARRAY_SIZE(wm5102_supplies),
 636         },
 637 };
 638
 639 static const char *wm8997_supplies[] = {
 640         "MICVDD",
 641         "DBVDD2",
 642         "CPVDD",
 643         "SPKVDD",
 644 };
 645
 646 static const struct mfd_cell wm8997_devs[] = {
 647         { .name = "arizona-micsupp" },
 648         {
 649                 .name = "arizona-extcon",
 650                 .parent_supplies = wm8997_supplies,
 651                 .num_parent_supplies = 1, /* We only need MICVDD */
 652         },
 653         { .name = "arizona-gpio" },
 654         { .name = "arizona-haptics" },
 655         { .name = "arizona-pwm" },
 656         {
 657                 .name = "wm8997-codec",
 658                 .parent_supplies = wm8997_supplies,
 659                 .num_parent_supplies = ARRAY_SIZE(wm8997_supplies),
 660         },
 661 };
 662
 663 int arizona_dev_init(struct arizona *arizona)
 664 {
 665         struct device *dev = arizona->dev;
 666         const char *type_name;
 667         unsigned int reg, val;
 668         int (*apply_patch)(struct arizona *) = NULL;
 669         int ret, i;
 670
 671         dev_set_drvdata(arizona->dev, arizona);
 672         mutex_init(&arizona->clk_lock);
 673
 674         if (dev_get_platdata(arizona->dev))
 675                 memcpy(&arizona->pdata, dev_get_platdata(arizona->dev),
 676                        sizeof(arizona->pdata));
 677         else
 678                 arizona_of_get_core_pdata(arizona);
 679
 680         regcache_cache_only(arizona->regmap, true);
 681
 682         switch (arizona->type) {
 683         case WM5102:
 684         case WM5110:
 685         case WM8280:
 686         case WM8997:
 687                 for (i = 0; i < ARRAY_SIZE(wm5102_core_supplies); i++)
 688                         arizona->core_supplies[i].supply
 689                                 = wm5102_core_supplies[i];
 690                 arizona->num_core_supplies = ARRAY_SIZE(wm5102_core_supplies);
 691                 break;
 692         default:
 693                 dev_err(arizona->dev, "Unknown device type %d\n",
 694                         arizona->type);
 695                 return -EINVAL;
 696         }
 697
 698         /* Mark DCVDD as external, LDO1 driver will clear if internal */
 699         arizona->external_dcvdd = true;
 700
 701         ret = mfd_add_devices(arizona->dev, -1, early_devs,
 702                               ARRAY_SIZE(early_devs), NULL, 0, NULL);
 703         if (ret != 0) {
 704                 dev_err(dev, "Failed to add early children: %d\n", ret);
 705                 return ret;
 706         }
 707
 708         ret = devm_regulator_bulk_get(dev, arizona->num_core_supplies,
 709                                       arizona->core_supplies);
 710         if (ret != 0) {
 711                 dev_err(dev, "Failed to request core supplies: %d\n",
 712                         ret);
 713                 goto err_early;
 714         }
 715
 716         /**
 717          * Don't use devres here because the only device we have to get
 718          * against is the MFD device and DCVDD will likely be supplied by
 719          * one of its children. Meaning that the regulator will be
 720          * destroyed by the time devres calls regulator put.
 721          */
 722         arizona->dcvdd = regulator_get(arizona->dev, "DCVDD");
 723         if (IS_ERR(arizona->dcvdd)) {
 724                 ret = PTR_ERR(arizona->dcvdd);
 725                 dev_err(dev, "Failed to request DCVDD: %d\n", ret);
 726                 goto err_early;
 727         }
 728
 729         if (arizona->pdata.reset) {
 730                 /* Start out with /RESET low to put the chip into reset */
 731                 ret = gpio_request_one(arizona->pdata.reset,
 732                                        GPIOF_DIR_OUT | GPIOF_INIT_LOW,
 733                                        "arizona /RESET");
 734                 if (ret != 0) {
 735                         dev_err(dev, "Failed to request /RESET: %d\n", ret);
 736                         goto err_dcvdd;
 737                 }
 738         }
 739
 740         ret = regulator_bulk_enable(arizona->num_core_supplies,
 741                                     arizona->core_supplies);
 742         if (ret != 0) {
 743                 dev_err(dev, "Failed to enable core supplies: %d\n",
 744                         ret);
 745                 goto err_dcvdd;
 746         }
 747
 748         ret = regulator_enable(arizona->dcvdd);
 749         if (ret != 0) {
 750                 dev_err(dev, "Failed to enable DCVDD: %d\n", ret);
 751                 goto err_enable;
 752         }
 753
 754         if (arizona->pdata.reset) {
 755                 gpio_set_value_cansleep(arizona->pdata.reset, 1);
 756                 msleep(1);
 757         }
 758
 759         regcache_cache_only(arizona->regmap, false);
 760
 761         /* Verify that this is a chip we know about */
 762         ret = regmap_read(arizona->regmap, ARIZONA_SOFTWARE_RESET, &reg);
 763         if (ret != 0) {
 764                 dev_err(dev, "Failed to read ID register: %d\n", ret);
 765                 goto err_reset;
 766         }
 767
 768         switch (reg) {
 769         case 0x5102:
 770         case 0x5110:
 771         case 0x8997:
 772                 break;
 773         default:
 774                 dev_err(arizona->dev, "Unknown device ID: %x\n", reg);
 775                 goto err_reset;
 776         }
 777
 778         /* If we have a /RESET GPIO we'll already be reset */
 779         if (!arizona->pdata.reset) {
 780                 regcache_mark_dirty(arizona->regmap);
 781
 782                 ret = regmap_write(arizona->regmap, ARIZONA_SOFTWARE_RESET, 0);
 783                 if (ret != 0) {
 784                         dev_err(dev, "Failed to reset device: %d\n", ret);
 785                         goto err_reset;
 786                 }
 787
 788                 msleep(1);
 789
 790                 ret = regcache_sync(arizona->regmap);
 791                 if (ret != 0) {
 792                         dev_err(dev, "Failed to sync device: %d\n", ret);
 793                         goto err_reset;
 794                 }
 795         }
 796
 797         /* Ensure device startup is complete */
 798         switch (arizona->type) {
 799         case WM5102:
 800                 ret = regmap_read(arizona->regmap,
 801                                   ARIZONA_WRITE_SEQUENCER_CTRL_3, &val);
 802                 if (ret != 0)
 803                         dev_err(dev,
 804                                 "Failed to check write sequencer state: %d\n",
 805                                 ret);
 806                 else if (val & 0x01)
 807                         break;
 808                 /* Fall through */
 809         default:
 810                 ret = arizona_wait_for_boot(arizona);
 811                 if (ret != 0) {
 812                         dev_err(arizona->dev,
 813                                 "Device failed initial boot: %d\n", ret);
 814                         goto err_reset;
 815                 }
 816                 break;
 817         }
 818
 819         /* Read the device ID information & do device specific stuff */
 820         ret = regmap_read(arizona->regmap, ARIZONA_SOFTWARE_RESET, &reg);
 821         if (ret != 0) {
 822                 dev_err(dev, "Failed to read ID register: %d\n", ret);
 823                 goto err_reset;
 824         }
 825
 826         ret = regmap_read(arizona->regmap, ARIZONA_DEVICE_REVISION,
 827                           &arizona->rev);
 828         if (ret != 0) {
 829                 dev_err(dev, "Failed to read revision register: %d\n", ret);
 830                 goto err_reset;
 831         }
 832         arizona->rev &= ARIZONA_DEVICE_REVISION_MASK;
 833
 834         switch (reg) {
 835 #ifdef CONFIG_MFD_WM5102
 836         case 0x5102:
 837                 type_name = "WM5102";
 838                 if (arizona->type != WM5102) {
 839                         dev_err(arizona->dev, "WM5102 registered as %d\n",
 840                                 arizona->type);
 841                         arizona->type = WM5102;
 842                 }
 843                 apply_patch = wm5102_patch;
 844                 arizona->rev &= 0x7;
 845                 break;
 846 #endif
 847 #ifdef CONFIG_MFD_WM5110
 848         case 0x5110:
 849                 switch (arizona->type) {
 850                 case WM5110:
 851                         type_name = "WM5110";
 852                         break;
 853                 case WM8280:
 854                         type_name = "WM8280";
 855                         break;
 856                 default:
 857                         type_name = "WM5110";
 858                         dev_err(arizona->dev, "WM5110 registered as %d\n",
 859                                 arizona->type);
 860                         arizona->type = WM5110;
 861                         break;
 862                 }
 863                 apply_patch = wm5110_patch;
 864                 break;
 865 #endif
 866 #ifdef CONFIG_MFD_WM8997
 867         case 0x8997:
 868                 type_name = "WM8997";
 869                 if (arizona->type != WM8997) {
 870                         dev_err(arizona->dev, "WM8997 registered as %d\n",
 871                                 arizona->type);
 872                         arizona->type = WM8997;
 873                 }
 874                 apply_patch = wm8997_patch;
 875                 break;
 876 #endif
 877         default:
 878                 dev_err(arizona->dev, "Unknown device ID %x\n", reg);
 879                 goto err_reset;
 880         }
 881
 882         dev_info(dev, "%s revision %c\n", type_name, arizona->rev + 'A');
 883
 884         if (apply_patch) {
 885                 ret = apply_patch(arizona);
 886                 if (ret != 0) {
 887                         dev_err(arizona->dev, "Failed to apply patch: %d\n",
 888                                 ret);
 889                         goto err_reset;
 890                 }
 891
 892                 switch (arizona->type) {
 893                 case WM5102:
 894                         ret = arizona_apply_hardware_patch(arizona);
 895                         if (ret != 0) {
 896                                 dev_err(arizona->dev,
 897                                         "Failed to apply hardware patch: %d\n",
 898                                         ret);
 899                                 goto err_reset;
 900                         }
 901                         break;
 902                 default:
 903                         break;
 904                 }
 905         }
 906
 907         for (i = 0; i < ARRAY_SIZE(arizona->pdata.gpio_defaults); i++) {
 908                 if (!arizona->pdata.gpio_defaults[i])
 909                         continue;
 910
 911                 regmap_write(arizona->regmap, ARIZONA_GPIO1_CTRL + i,
 912                              arizona->pdata.gpio_defaults[i]);
 913         }
 914
 915         /* Chip default */
 916         if (!arizona->pdata.clk32k_src)
 917                 arizona->pdata.clk32k_src = ARIZONA_32KZ_MCLK2;
 918
 919         switch (arizona->pdata.clk32k_src) {
 920         case ARIZONA_32KZ_MCLK1:
 921         case ARIZONA_32KZ_MCLK2:
 922                 regmap_update_bits(arizona->regmap, ARIZONA_CLOCK_32K_1,
 923                                    ARIZONA_CLK_32K_SRC_MASK,
 924                                    arizona->pdata.clk32k_src - 1);
 925                 arizona_clk32k_enable(arizona);
 926                 break;
 927         case ARIZONA_32KZ_NONE:
 928                 regmap_update_bits(arizona->regmap, ARIZONA_CLOCK_32K_1,
 929                                    ARIZONA_CLK_32K_SRC_MASK, 2);
 930                 break;
 931         default:
 932                 dev_err(arizona->dev, "Invalid 32kHz clock source: %d\n",
 933                         arizona->pdata.clk32k_src);
 934                 ret = -EINVAL;
 935                 goto err_reset;
 936         }
 937
 938         for (i = 0; i < ARIZONA_MAX_MICBIAS; i++) {
 939                 if (!arizona->pdata.micbias[i].mV &&
 940                     !arizona->pdata.micbias[i].bypass)
 941                         continue;
 942
 943                 /* Apply default for bypass mode */
 944                 if (!arizona->pdata.micbias[i].mV)
 945                         arizona->pdata.micbias[i].mV = 2800;
 946
 947                 val = (arizona->pdata.micbias[i].mV - 1500) / 100;
 948
 949                 val <<= ARIZONA_MICB1_LVL_SHIFT;
 950
 951                 if (arizona->pdata.micbias[i].ext_cap)
 952                         val |= ARIZONA_MICB1_EXT_CAP;
 953
 954                 if (arizona->pdata.micbias[i].discharge)
 955                         val |= ARIZONA_MICB1_DISCH;
 956
 957                 if (arizona->pdata.micbias[i].soft_start)
 958                         val |= ARIZONA_MICB1_RATE;
 959
 960                 if (arizona->pdata.micbias[i].bypass)
 961                         val |= ARIZONA_MICB1_BYPASS;
 962
 963                 regmap_update_bits(arizona->regmap,
 964                                    ARIZONA_MIC_BIAS_CTRL_1 + i,
 965                                    ARIZONA_MICB1_LVL_MASK |
 966                                    ARIZONA_MICB1_EXT_CAP |
 967                                    ARIZONA_MICB1_DISCH |
 968                                    ARIZONA_MICB1_BYPASS |
 969                                    ARIZONA_MICB1_RATE, val);
 970         }
 971
 972         for (i = 0; i < ARIZONA_MAX_INPUT; i++) {
 973                 /* Default for both is 0 so noop with defaults */
 974                 val = arizona->pdata.dmic_ref[i]
 975                         << ARIZONA_IN1_DMIC_SUP_SHIFT;
 976                 val |= arizona->pdata.inmode[i] << ARIZONA_IN1_MODE_SHIFT;
 977
 978                 regmap_update_bits(arizona->regmap,
 979                                    ARIZONA_IN1L_CONTROL + (i * 8),
 980                                    ARIZONA_IN1_DMIC_SUP_MASK |
 981                                    ARIZONA_IN1_MODE_MASK, val);
 982         }
 983
 984         for (i = 0; i < ARIZONA_MAX_OUTPUT; i++) {
 985                 /* Default is 0 so noop with defaults */
 986                 if (arizona->pdata.out_mono[i])
 987                         val = ARIZONA_OUT1_MONO;
 988                 else
 989                         val = 0;
 990
 991                 regmap_update_bits(arizona->regmap,
 992                                    ARIZONA_OUTPUT_PATH_CONFIG_1L + (i * 8),
 993                                    ARIZONA_OUT1_MONO, val);
 994         }
 995
 996         for (i = 0; i < ARIZONA_MAX_PDM_SPK; i++) {
 997                 if (arizona->pdata.spk_mute[i])
 998                         regmap_update_bits(arizona->regmap,
 999                                            ARIZONA_PDM_SPK1_CTRL_1 + (i * 2),
1000                                            ARIZONA_SPK1_MUTE_ENDIAN_MASK |
1001                                            ARIZONA_SPK1_MUTE_SEQ1_MASK,
1002                                            arizona->pdata.spk_mute[i]);
1003
1004                 if (arizona->pdata.spk_fmt[i])
1005                         regmap_update_bits(arizona->regmap,
1006                                            ARIZONA_PDM_SPK1_CTRL_2 + (i * 2),
1007                                            ARIZONA_SPK1_FMT_MASK,
1008                                            arizona->pdata.spk_fmt[i]);
1009         }
1010
1011         pm_runtime_set_active(arizona->dev);
1012         pm_runtime_enable(arizona->dev);
1013
1014         /* Set up for interrupts */
1015         ret = arizona_irq_init(arizona);
1016         if (ret != 0)
1017                 goto err_reset;
1018
1019         pm_runtime_set_autosuspend_delay(arizona->dev, 100);
1020         pm_runtime_use_autosuspend(arizona->dev);
1021
1022         arizona_request_irq(arizona, ARIZONA_IRQ_CLKGEN_ERR, "CLKGEN error",
1023                             arizona_clkgen_err, arizona);
1024         arizona_request_irq(arizona, ARIZONA_IRQ_OVERCLOCKED, "Overclocked",
1025                             arizona_overclocked, arizona);
1026         arizona_request_irq(arizona, ARIZONA_IRQ_UNDERCLOCKED, "Underclocked",
1027                             arizona_underclocked, arizona);
1028
1029         switch (arizona->type) {
1030         case WM5102:
1031                 ret = mfd_add_devices(arizona->dev, -1, wm5102_devs,
1032                                       ARRAY_SIZE(wm5102_devs), NULL, 0, NULL);
1033                 break;
1034         case WM5110:
1035         case WM8280:
1036                 ret = mfd_add_devices(arizona->dev, -1, wm5110_devs,
1037                                       ARRAY_SIZE(wm5110_devs), NULL, 0, NULL);
1038                 break;
1039         case WM8997:
1040                 ret = mfd_add_devices(arizona->dev, -1, wm8997_devs,
1041                                       ARRAY_SIZE(wm8997_devs), NULL, 0, NULL);
1042                 break;
1043         }
1044
1045         if (ret != 0) {
1046                 dev_err(arizona->dev, "Failed to add subdevices: %d\n", ret);
1047                 goto err_irq;
1048         }
1049
1050         return 0;
1051
1052 err_irq:
1053         arizona_irq_exit(arizona);
1054 err_reset:
1055         if (arizona->pdata.reset) {
1056                 gpio_set_value_cansleep(arizona->pdata.reset, 0);
1057                 gpio_free(arizona->pdata.reset);
1058         }
1059         regulator_disable(arizona->dcvdd);
1060 err_enable:
1061         regulator_bulk_disable(arizona->num_core_supplies,
1062                                arizona->core_supplies);
1063 err_dcvdd:
1064         regulator_put(arizona->dcvdd);
1065 err_early:
1066         mfd_remove_devices(dev);
1067         return ret;
1068 }
1069 EXPORT_SYMBOL_GPL(arizona_dev_init);
1070
1071 int arizona_dev_exit(struct arizona *arizona)
1072 {
1073         pm_runtime_disable(arizona->dev);
1074
1075         regulator_disable(arizona->dcvdd);
1076         regulator_put(arizona->dcvdd);
1077
1078         mfd_remove_devices(arizona->dev);
1079         arizona_free_irq(arizona, ARIZONA_IRQ_UNDERCLOCKED, arizona);
1080         arizona_free_irq(arizona, ARIZONA_IRQ_OVERCLOCKED, arizona);
1081         arizona_free_irq(arizona, ARIZONA_IRQ_CLKGEN_ERR, arizona);
1082         arizona_irq_exit(arizona);
1083         if (arizona->pdata.reset)
1084                 gpio_set_value_cansleep(arizona->pdata.reset, 0);
1085
1086         regulator_bulk_disable(arizona->num_core_supplies,
1087                                arizona->core_supplies);
1088         return 0;
1089 }
1090 EXPORT_SYMBOL_GPL(arizona_dev_exit);