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_RUNTIME
 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         switch (arizona->type) {
 397         case WM5102:
 398                 ret = wm5102_patch(arizona);
 399                 if (ret != 0) {
 400                         dev_err(arizona->dev, "Failed to apply patch: %d\n",
 401                                 ret);
 402                         goto err;
 403                 }
 404         default:
 405                 break;
 406         }
 407
 408         ret = regcache_sync(arizona->regmap);
 409         if (ret != 0) {
 410                 dev_err(arizona->dev, "Failed to restore register cache\n");
 411                 goto err;
 412         }
 413
 414         return 0;
 415
 416 err:
 417         regcache_cache_only(arizona->regmap, true);
 418         regulator_disable(arizona->dcvdd);
 419         return ret;
 420 }
 421
 422 static int arizona_runtime_suspend(struct device *dev)
 423 {
 424         struct arizona *arizona = dev_get_drvdata(dev);
 425         int ret;
 426
 427         dev_dbg(arizona->dev, "Entering AoD mode\n");
 428
 429         if (arizona->external_dcvdd) {
 430                 ret = regmap_update_bits(arizona->regmap,
 431                                          ARIZONA_ISOLATION_CONTROL,
 432                                          ARIZONA_ISOLATE_DCVDD1,
 433                                          ARIZONA_ISOLATE_DCVDD1);
 434                 if (ret != 0) {
 435                         dev_err(arizona->dev, "Failed to isolate DCVDD: %d\n",
 436                                 ret);
 437                         return ret;
 438                 }
 439         }
 440
 441         regcache_cache_only(arizona->regmap, true);
 442         regcache_mark_dirty(arizona->regmap);
 443         regulator_disable(arizona->dcvdd);
 444
 445         return 0;
 446 }
 447 #endif
 448
 449 #ifdef CONFIG_PM_SLEEP
 450 static int arizona_suspend(struct device *dev)
 451 {
 452         struct arizona *arizona = dev_get_drvdata(dev);
 453
 454         dev_dbg(arizona->dev, "Suspend, disabling IRQ\n");
 455         disable_irq(arizona->irq);
 456
 457         return 0;
 458 }
 459
 460 static int arizona_suspend_late(struct device *dev)
 461 {
 462         struct arizona *arizona = dev_get_drvdata(dev);
 463
 464         dev_dbg(arizona->dev, "Late suspend, reenabling IRQ\n");
 465         enable_irq(arizona->irq);
 466
 467         return 0;
 468 }
 469
 470 static int arizona_resume_noirq(struct device *dev)
 471 {
 472         struct arizona *arizona = dev_get_drvdata(dev);
 473
 474         dev_dbg(arizona->dev, "Early resume, disabling IRQ\n");
 475         disable_irq(arizona->irq);
 476
 477         return 0;
 478 }
 479
 480 static int arizona_resume(struct device *dev)
 481 {
 482         struct arizona *arizona = dev_get_drvdata(dev);
 483
 484         dev_dbg(arizona->dev, "Late resume, reenabling IRQ\n");
 485         enable_irq(arizona->irq);
 486
 487         return 0;
 488 }
 489 #endif
 490
 491 const struct dev_pm_ops arizona_pm_ops = {
 492         SET_RUNTIME_PM_OPS(arizona_runtime_suspend,
 493                            arizona_runtime_resume,
 494                            NULL)
 495         SET_SYSTEM_SLEEP_PM_OPS(arizona_suspend, arizona_resume)
 496 #ifdef CONFIG_PM_SLEEP
 497         .suspend_late = arizona_suspend_late,
 498         .resume_noirq = arizona_resume_noirq,
 499 #endif
 500 };
 501 EXPORT_SYMBOL_GPL(arizona_pm_ops);
 502
 503 #ifdef CONFIG_OF
 504 unsigned long arizona_of_get_type(struct device *dev)
 505 {
 506         const struct of_device_id *id = of_match_device(arizona_of_match, dev);
 507
 508         if (id)
 509                 return (unsigned long)id->data;
 510         else
 511                 return 0;
 512 }
 513 EXPORT_SYMBOL_GPL(arizona_of_get_type);
 514
 515 int arizona_of_get_named_gpio(struct arizona *arizona, const char *prop,
 516                               bool mandatory)
 517 {
 518         int gpio;
 519
 520         gpio = of_get_named_gpio(arizona->dev->of_node, prop, 0);
 521         if (gpio < 0) {
 522                 if (mandatory)
 523                         dev_err(arizona->dev,
 524                                 "Mandatory DT gpio %s missing/malformed: %d\n",
 525                                 prop, gpio);
 526
 527                 gpio = 0;
 528         }
 529
 530         return gpio;
 531 }
 532 EXPORT_SYMBOL_GPL(arizona_of_get_named_gpio);
 533
 534 static int arizona_of_get_core_pdata(struct arizona *arizona)
 535 {
 536         struct arizona_pdata *pdata = &arizona->pdata;
 537         int ret, i;
 538
 539         pdata->reset = arizona_of_get_named_gpio(arizona, "wlf,reset", true);
 540
 541         ret = of_property_read_u32_array(arizona->dev->of_node,
 542                                          "wlf,gpio-defaults",
 543                                          arizona->pdata.gpio_defaults,
 544                                          ARRAY_SIZE(arizona->pdata.gpio_defaults));
 545         if (ret >= 0) {
 546                 /*
 547                  * All values are literal except out of range values
 548                  * which are chip default, translate into platform
 549                  * data which uses 0 as chip default and out of range
 550                  * as zero.
 551                  */
 552                 for (i = 0; i < ARRAY_SIZE(arizona->pdata.gpio_defaults); i++) {
 553                         if (arizona->pdata.gpio_defaults[i] > 0xffff)
 554                                 arizona->pdata.gpio_defaults[i] = 0;
 555                         else if (arizona->pdata.gpio_defaults[i] == 0)
 556                                 arizona->pdata.gpio_defaults[i] = 0x10000;
 557                 }
 558         } else {
 559                 dev_err(arizona->dev, "Failed to parse GPIO defaults: %d\n",
 560                         ret);
 561         }
 562
 563         return 0;
 564 }
 565
 566 const struct of_device_id arizona_of_match[] = {
 567         { .compatible = "wlf,wm5102", .data = (void *)WM5102 },
 568         { .compatible = "wlf,wm5110", .data = (void *)WM5110 },
 569         { .compatible = "wlf,wm8997", .data = (void *)WM8997 },
 570         {},
 571 };
 572 EXPORT_SYMBOL_GPL(arizona_of_match);
 573 #else
 574 static inline int arizona_of_get_core_pdata(struct arizona *arizona)
 575 {
 576         return 0;
 577 }
 578 #endif
 579
 580 static const struct mfd_cell early_devs[] = {
 581         { .name = "arizona-ldo1" },
 582 };
 583
 584 static const char *wm5102_supplies[] = {
 585         "MICVDD",
 586         "DBVDD2",
 587         "DBVDD3",
 588         "CPVDD",
 589         "SPKVDDL",
 590         "SPKVDDR",
 591 };
 592
 593 static const struct mfd_cell wm5102_devs[] = {
 594         { .name = "arizona-micsupp" },
 595         {
 596                 .name = "arizona-extcon",
 597                 .parent_supplies = wm5102_supplies,
 598                 .num_parent_supplies = 1, /* We only need MICVDD */
 599         },
 600         { .name = "arizona-gpio" },
 601         { .name = "arizona-haptics" },
 602         { .name = "arizona-pwm" },
 603         {
 604                 .name = "wm5102-codec",
 605                 .parent_supplies = wm5102_supplies,
 606                 .num_parent_supplies = ARRAY_SIZE(wm5102_supplies),
 607         },
 608 };
 609
 610 static const struct mfd_cell wm5110_devs[] = {
 611         { .name = "arizona-micsupp" },
 612         {
 613                 .name = "arizona-extcon",
 614                 .parent_supplies = wm5102_supplies,
 615                 .num_parent_supplies = 1, /* We only need MICVDD */
 616         },
 617         { .name = "arizona-gpio" },
 618         { .name = "arizona-haptics" },
 619         { .name = "arizona-pwm" },
 620         {
 621                 .name = "wm5110-codec",
 622                 .parent_supplies = wm5102_supplies,
 623                 .num_parent_supplies = ARRAY_SIZE(wm5102_supplies),
 624         },
 625 };
 626
 627 static const char *wm8997_supplies[] = {
 628         "MICVDD",
 629         "DBVDD2",
 630         "CPVDD",
 631         "SPKVDD",
 632 };
 633
 634 static const struct mfd_cell wm8997_devs[] = {
 635         { .name = "arizona-micsupp" },
 636         {
 637                 .name = "arizona-extcon",
 638                 .parent_supplies = wm8997_supplies,
 639                 .num_parent_supplies = 1, /* We only need MICVDD */
 640         },
 641         { .name = "arizona-gpio" },
 642         { .name = "arizona-haptics" },
 643         { .name = "arizona-pwm" },
 644         {
 645                 .name = "wm8997-codec",
 646                 .parent_supplies = wm8997_supplies,
 647                 .num_parent_supplies = ARRAY_SIZE(wm8997_supplies),
 648         },
 649 };
 650
 651 int arizona_dev_init(struct arizona *arizona)
 652 {
 653         struct device *dev = arizona->dev;
 654         const char *type_name;
 655         unsigned int reg, val;
 656         int (*apply_patch)(struct arizona *) = NULL;
 657         int ret, i;
 658
 659         dev_set_drvdata(arizona->dev, arizona);
 660         mutex_init(&arizona->clk_lock);
 661
 662         if (dev_get_platdata(arizona->dev))
 663                 memcpy(&arizona->pdata, dev_get_platdata(arizona->dev),
 664                        sizeof(arizona->pdata));
 665         else
 666                 arizona_of_get_core_pdata(arizona);
 667
 668         regcache_cache_only(arizona->regmap, true);
 669
 670         switch (arizona->type) {
 671         case WM5102:
 672         case WM5110:
 673         case WM8997:
 674                 for (i = 0; i < ARRAY_SIZE(wm5102_core_supplies); i++)
 675                         arizona->core_supplies[i].supply
 676                                 = wm5102_core_supplies[i];
 677                 arizona->num_core_supplies = ARRAY_SIZE(wm5102_core_supplies);
 678                 break;
 679         default:
 680                 dev_err(arizona->dev, "Unknown device type %d\n",
 681                         arizona->type);
 682                 return -EINVAL;
 683         }
 684
 685         /* Mark DCVDD as external, LDO1 driver will clear if internal */
 686         arizona->external_dcvdd = true;
 687
 688         ret = mfd_add_devices(arizona->dev, -1, early_devs,
 689                               ARRAY_SIZE(early_devs), NULL, 0, NULL);
 690         if (ret != 0) {
 691                 dev_err(dev, "Failed to add early children: %d\n", ret);
 692                 return ret;
 693         }
 694
 695         ret = devm_regulator_bulk_get(dev, arizona->num_core_supplies,
 696                                       arizona->core_supplies);
 697         if (ret != 0) {
 698                 dev_err(dev, "Failed to request core supplies: %d\n",
 699                         ret);
 700                 goto err_early;
 701         }
 702
 703         /**
 704          * Don't use devres here because the only device we have to get
 705          * against is the MFD device and DCVDD will likely be supplied by
 706          * one of its children. Meaning that the regulator will be
 707          * destroyed by the time devres calls regulator put.
 708          */
 709         arizona->dcvdd = regulator_get(arizona->dev, "DCVDD");
 710         if (IS_ERR(arizona->dcvdd)) {
 711                 ret = PTR_ERR(arizona->dcvdd);
 712                 dev_err(dev, "Failed to request DCVDD: %d\n", ret);
 713                 goto err_early;
 714         }
 715
 716         if (arizona->pdata.reset) {
 717                 /* Start out with /RESET low to put the chip into reset */
 718                 ret = gpio_request_one(arizona->pdata.reset,
 719                                        GPIOF_DIR_OUT | GPIOF_INIT_LOW,
 720                                        "arizona /RESET");
 721                 if (ret != 0) {
 722                         dev_err(dev, "Failed to request /RESET: %d\n", ret);
 723                         goto err_dcvdd;
 724                 }
 725         }
 726
 727         ret = regulator_bulk_enable(arizona->num_core_supplies,
 728                                     arizona->core_supplies);
 729         if (ret != 0) {
 730                 dev_err(dev, "Failed to enable core supplies: %d\n",
 731                         ret);
 732                 goto err_dcvdd;
 733         }
 734
 735         ret = regulator_enable(arizona->dcvdd);
 736         if (ret != 0) {
 737                 dev_err(dev, "Failed to enable DCVDD: %d\n", ret);
 738                 goto err_enable;
 739         }
 740
 741         if (arizona->pdata.reset) {
 742                 gpio_set_value_cansleep(arizona->pdata.reset, 1);
 743                 msleep(1);
 744         }
 745
 746         regcache_cache_only(arizona->regmap, false);
 747
 748         /* Verify that this is a chip we know about */
 749         ret = regmap_read(arizona->regmap, ARIZONA_SOFTWARE_RESET, &reg);
 750         if (ret != 0) {
 751                 dev_err(dev, "Failed to read ID register: %d\n", ret);
 752                 goto err_reset;
 753         }
 754
 755         switch (reg) {
 756         case 0x5102:
 757         case 0x5110:
 758         case 0x8997:
 759                 break;
 760         default:
 761                 dev_err(arizona->dev, "Unknown device ID: %x\n", reg);
 762                 goto err_reset;
 763         }
 764
 765         /* If we have a /RESET GPIO we'll already be reset */
 766         if (!arizona->pdata.reset) {
 767                 regcache_mark_dirty(arizona->regmap);
 768
 769                 ret = regmap_write(arizona->regmap, ARIZONA_SOFTWARE_RESET, 0);
 770                 if (ret != 0) {
 771                         dev_err(dev, "Failed to reset device: %d\n", ret);
 772                         goto err_reset;
 773                 }
 774
 775                 msleep(1);
 776
 777                 ret = regcache_sync(arizona->regmap);
 778                 if (ret != 0) {
 779                         dev_err(dev, "Failed to sync device: %d\n", ret);
 780                         goto err_reset;
 781                 }
 782         }
 783
 784         /* Ensure device startup is complete */
 785         switch (arizona->type) {
 786         case WM5102:
 787                 ret = regmap_read(arizona->regmap, 0x19, &val);
 788                 if (ret != 0)
 789                         dev_err(dev,
 790                                 "Failed to check write sequencer state: %d\n",
 791                                 ret);
 792                 else if (val & 0x01)
 793                         break;
 794                 /* Fall through */
 795         default:
 796                 ret = arizona_wait_for_boot(arizona);
 797                 if (ret != 0) {
 798                         dev_err(arizona->dev,
 799                                 "Device failed initial boot: %d\n", ret);
 800                         goto err_reset;
 801                 }
 802                 break;
 803         }
 804
 805         /* Read the device ID information & do device specific stuff */
 806         ret = regmap_read(arizona->regmap, ARIZONA_SOFTWARE_RESET, &reg);
 807         if (ret != 0) {
 808                 dev_err(dev, "Failed to read ID register: %d\n", ret);
 809                 goto err_reset;
 810         }
 811
 812         ret = regmap_read(arizona->regmap, ARIZONA_DEVICE_REVISION,
 813                           &arizona->rev);
 814         if (ret != 0) {
 815                 dev_err(dev, "Failed to read revision register: %d\n", ret);
 816                 goto err_reset;
 817         }
 818         arizona->rev &= ARIZONA_DEVICE_REVISION_MASK;
 819
 820         switch (reg) {
 821 #ifdef CONFIG_MFD_WM5102
 822         case 0x5102:
 823                 type_name = "WM5102";
 824                 if (arizona->type != WM5102) {
 825                         dev_err(arizona->dev, "WM5102 registered as %d\n",
 826                                 arizona->type);
 827                         arizona->type = WM5102;
 828                 }
 829                 apply_patch = wm5102_patch;
 830                 arizona->rev &= 0x7;
 831                 break;
 832 #endif
 833 #ifdef CONFIG_MFD_WM5110
 834         case 0x5110:
 835                 type_name = "WM5110";
 836                 if (arizona->type != WM5110) {
 837                         dev_err(arizona->dev, "WM5110 registered as %d\n",
 838                                 arizona->type);
 839                         arizona->type = WM5110;
 840                 }
 841                 apply_patch = wm5110_patch;
 842                 break;
 843 #endif
 844 #ifdef CONFIG_MFD_WM8997
 845         case 0x8997:
 846                 type_name = "WM8997";
 847                 if (arizona->type != WM8997) {
 848                         dev_err(arizona->dev, "WM8997 registered as %d\n",
 849                                 arizona->type);
 850                         arizona->type = WM8997;
 851                 }
 852                 apply_patch = wm8997_patch;
 853                 break;
 854 #endif
 855         default:
 856                 dev_err(arizona->dev, "Unknown device ID %x\n", reg);
 857                 goto err_reset;
 858         }
 859
 860         dev_info(dev, "%s revision %c\n", type_name, arizona->rev + 'A');
 861
 862         if (apply_patch) {
 863                 ret = apply_patch(arizona);
 864                 if (ret != 0) {
 865                         dev_err(arizona->dev, "Failed to apply patch: %d\n",
 866                                 ret);
 867                         goto err_reset;
 868                 }
 869
 870                 switch (arizona->type) {
 871                 case WM5102:
 872                         ret = arizona_apply_hardware_patch(arizona);
 873                         if (ret != 0) {
 874                                 dev_err(arizona->dev,
 875                                         "Failed to apply hardware patch: %d\n",
 876                                         ret);
 877                                 goto err_reset;
 878                         }
 879                         break;
 880                 default:
 881                         break;
 882                 }
 883         }
 884
 885         for (i = 0; i < ARRAY_SIZE(arizona->pdata.gpio_defaults); i++) {
 886                 if (!arizona->pdata.gpio_defaults[i])
 887                         continue;
 888
 889                 regmap_write(arizona->regmap, ARIZONA_GPIO1_CTRL + i,
 890                              arizona->pdata.gpio_defaults[i]);
 891         }
 892
 893         pm_runtime_set_autosuspend_delay(arizona->dev, 100);
 894         pm_runtime_use_autosuspend(arizona->dev);
 895         pm_runtime_enable(arizona->dev);
 896
 897         /* Chip default */
 898         if (!arizona->pdata.clk32k_src)
 899                 arizona->pdata.clk32k_src = ARIZONA_32KZ_MCLK2;
 900
 901         switch (arizona->pdata.clk32k_src) {
 902         case ARIZONA_32KZ_MCLK1:
 903         case ARIZONA_32KZ_MCLK2:
 904                 regmap_update_bits(arizona->regmap, ARIZONA_CLOCK_32K_1,
 905                                    ARIZONA_CLK_32K_SRC_MASK,
 906                                    arizona->pdata.clk32k_src - 1);
 907                 arizona_clk32k_enable(arizona);
 908                 break;
 909         case ARIZONA_32KZ_NONE:
 910                 regmap_update_bits(arizona->regmap, ARIZONA_CLOCK_32K_1,
 911                                    ARIZONA_CLK_32K_SRC_MASK, 2);
 912                 break;
 913         default:
 914                 dev_err(arizona->dev, "Invalid 32kHz clock source: %d\n",
 915                         arizona->pdata.clk32k_src);
 916                 ret = -EINVAL;
 917                 goto err_reset;
 918         }
 919
 920         for (i = 0; i < ARIZONA_MAX_MICBIAS; i++) {
 921                 if (!arizona->pdata.micbias[i].mV &&
 922                     !arizona->pdata.micbias[i].bypass)
 923                         continue;
 924
 925                 /* Apply default for bypass mode */
 926                 if (!arizona->pdata.micbias[i].mV)
 927                         arizona->pdata.micbias[i].mV = 2800;
 928
 929                 val = (arizona->pdata.micbias[i].mV - 1500) / 100;
 930
 931                 val <<= ARIZONA_MICB1_LVL_SHIFT;
 932
 933                 if (arizona->pdata.micbias[i].ext_cap)
 934                         val |= ARIZONA_MICB1_EXT_CAP;
 935
 936                 if (arizona->pdata.micbias[i].discharge)
 937                         val |= ARIZONA_MICB1_DISCH;
 938
 939                 if (arizona->pdata.micbias[i].soft_start)
 940                         val |= ARIZONA_MICB1_RATE;
 941
 942                 if (arizona->pdata.micbias[i].bypass)
 943                         val |= ARIZONA_MICB1_BYPASS;
 944
 945                 regmap_update_bits(arizona->regmap,
 946                                    ARIZONA_MIC_BIAS_CTRL_1 + i,
 947                                    ARIZONA_MICB1_LVL_MASK |
 948                                    ARIZONA_MICB1_DISCH |
 949                                    ARIZONA_MICB1_BYPASS |
 950                                    ARIZONA_MICB1_RATE, val);
 951         }
 952
 953         for (i = 0; i < ARIZONA_MAX_INPUT; i++) {
 954                 /* Default for both is 0 so noop with defaults */
 955                 val = arizona->pdata.dmic_ref[i]
 956                         << ARIZONA_IN1_DMIC_SUP_SHIFT;
 957                 val |= arizona->pdata.inmode[i] << ARIZONA_IN1_MODE_SHIFT;
 958
 959                 regmap_update_bits(arizona->regmap,
 960                                    ARIZONA_IN1L_CONTROL + (i * 8),
 961                                    ARIZONA_IN1_DMIC_SUP_MASK |
 962                                    ARIZONA_IN1_MODE_MASK, val);
 963         }
 964
 965         for (i = 0; i < ARIZONA_MAX_OUTPUT; i++) {
 966                 /* Default is 0 so noop with defaults */
 967                 if (arizona->pdata.out_mono[i])
 968                         val = ARIZONA_OUT1_MONO;
 969                 else
 970                         val = 0;
 971
 972                 regmap_update_bits(arizona->regmap,
 973                                    ARIZONA_OUTPUT_PATH_CONFIG_1L + (i * 8),
 974                                    ARIZONA_OUT1_MONO, val);
 975         }
 976
 977         for (i = 0; i < ARIZONA_MAX_PDM_SPK; i++) {
 978                 if (arizona->pdata.spk_mute[i])
 979                         regmap_update_bits(arizona->regmap,
 980                                            ARIZONA_PDM_SPK1_CTRL_1 + (i * 2),
 981                                            ARIZONA_SPK1_MUTE_ENDIAN_MASK |
 982                                            ARIZONA_SPK1_MUTE_SEQ1_MASK,
 983                                            arizona->pdata.spk_mute[i]);
 984
 985                 if (arizona->pdata.spk_fmt[i])
 986                         regmap_update_bits(arizona->regmap,
 987                                            ARIZONA_PDM_SPK1_CTRL_2 + (i * 2),
 988                                            ARIZONA_SPK1_FMT_MASK,
 989                                            arizona->pdata.spk_fmt[i]);
 990         }
 991
 992         /* Set up for interrupts */
 993         ret = arizona_irq_init(arizona);
 994         if (ret != 0)
 995                 goto err_reset;
 996
 997         arizona_request_irq(arizona, ARIZONA_IRQ_CLKGEN_ERR, "CLKGEN error",
 998                             arizona_clkgen_err, arizona);
 999         arizona_request_irq(arizona, ARIZONA_IRQ_OVERCLOCKED, "Overclocked",
1000                             arizona_overclocked, arizona);
1001         arizona_request_irq(arizona, ARIZONA_IRQ_UNDERCLOCKED, "Underclocked",
1002                             arizona_underclocked, arizona);
1003
1004         switch (arizona->type) {
1005         case WM5102:
1006                 ret = mfd_add_devices(arizona->dev, -1, wm5102_devs,
1007                                       ARRAY_SIZE(wm5102_devs), NULL, 0, NULL);
1008                 break;
1009         case WM5110:
1010                 ret = mfd_add_devices(arizona->dev, -1, wm5110_devs,
1011                                       ARRAY_SIZE(wm5110_devs), NULL, 0, NULL);
1012                 break;
1013         case WM8997:
1014                 ret = mfd_add_devices(arizona->dev, -1, wm8997_devs,
1015                                       ARRAY_SIZE(wm8997_devs), NULL, 0, NULL);
1016                 break;
1017         }
1018
1019         if (ret != 0) {
1020                 dev_err(arizona->dev, "Failed to add subdevices: %d\n", ret);
1021                 goto err_irq;
1022         }
1023
1024 #ifdef CONFIG_PM_RUNTIME
1025         regulator_disable(arizona->dcvdd);
1026 #endif
1027
1028         return 0;
1029
1030 err_irq:
1031         arizona_irq_exit(arizona);
1032 err_reset:
1033         if (arizona->pdata.reset) {
1034                 gpio_set_value_cansleep(arizona->pdata.reset, 0);
1035                 gpio_free(arizona->pdata.reset);
1036         }
1037         regulator_disable(arizona->dcvdd);
1038 err_enable:
1039         regulator_bulk_disable(arizona->num_core_supplies,
1040                                arizona->core_supplies);
1041 err_dcvdd:
1042         regulator_put(arizona->dcvdd);
1043 err_early:
1044         mfd_remove_devices(dev);
1045         return ret;
1046 }
1047 EXPORT_SYMBOL_GPL(arizona_dev_init);
1048
1049 int arizona_dev_exit(struct arizona *arizona)
1050 {
1051         pm_runtime_disable(arizona->dev);
1052
1053         regulator_disable(arizona->dcvdd);
1054         regulator_put(arizona->dcvdd);
1055
1056         mfd_remove_devices(arizona->dev);
1057         arizona_free_irq(arizona, ARIZONA_IRQ_UNDERCLOCKED, arizona);
1058         arizona_free_irq(arizona, ARIZONA_IRQ_OVERCLOCKED, arizona);
1059         arizona_free_irq(arizona, ARIZONA_IRQ_CLKGEN_ERR, arizona);
1060         arizona_irq_exit(arizona);
1061         if (arizona->pdata.reset)
1062                 gpio_set_value_cansleep(arizona->pdata.reset, 0);
1063
1064         regulator_bulk_disable(arizona->num_core_supplies,
1065                                arizona->core_supplies);
1066         return 0;
1067 }
1068 EXPORT_SYMBOL_GPL(arizona_dev_exit);