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_ISRC2_UNDERCLOCKED_STS)
 127                 dev_err(arizona->dev, "ISRC2 underclocked\n");
 128         if (val & ARIZONA_ISRC1_UNDERCLOCKED_STS)
 129                 dev_err(arizona->dev, "ISRC1 underclocked\n");
 130         if (val & ARIZONA_FX_UNDERCLOCKED_STS)
 131                 dev_err(arizona->dev, "FX underclocked\n");
 132         if (val & ARIZONA_ASRC_UNDERCLOCKED_STS)
 133                 dev_err(arizona->dev, "ASRC underclocked\n");
 134         if (val & ARIZONA_DAC_UNDERCLOCKED_STS)
 135                 dev_err(arizona->dev, "DAC underclocked\n");
 136         if (val & ARIZONA_ADC_UNDERCLOCKED_STS)
 137                 dev_err(arizona->dev, "ADC underclocked\n");
 138         if (val & ARIZONA_MIXER_UNDERCLOCKED_STS)
 139                 dev_err(arizona->dev, "Mixer dropped sample\n");
 140
 141         return IRQ_HANDLED;
 142 }
 143
 144 static irqreturn_t arizona_overclocked(int irq, void *data)
 145 {
 146         struct arizona *arizona = data;
 147         unsigned int val[2];
 148         int ret;
 149
 150         ret = regmap_bulk_read(arizona->regmap, ARIZONA_INTERRUPT_RAW_STATUS_6,
 151                                &val[0], 2);
 152         if (ret != 0) {
 153                 dev_err(arizona->dev, "Failed to read overclock status: %d\n",
 154                         ret);
 155                 return IRQ_NONE;
 156         }
 157
 158         if (val[0] & ARIZONA_PWM_OVERCLOCKED_STS)
 159                 dev_err(arizona->dev, "PWM overclocked\n");
 160         if (val[0] & ARIZONA_FX_CORE_OVERCLOCKED_STS)
 161                 dev_err(arizona->dev, "FX core overclocked\n");
 162         if (val[0] & ARIZONA_DAC_SYS_OVERCLOCKED_STS)
 163                 dev_err(arizona->dev, "DAC SYS overclocked\n");
 164         if (val[0] & ARIZONA_DAC_WARP_OVERCLOCKED_STS)
 165                 dev_err(arizona->dev, "DAC WARP overclocked\n");
 166         if (val[0] & ARIZONA_ADC_OVERCLOCKED_STS)
 167                 dev_err(arizona->dev, "ADC overclocked\n");
 168         if (val[0] & ARIZONA_MIXER_OVERCLOCKED_STS)
 169                 dev_err(arizona->dev, "Mixer overclocked\n");
 170         if (val[0] & ARIZONA_AIF3_SYNC_OVERCLOCKED_STS)
 171                 dev_err(arizona->dev, "AIF3 overclocked\n");
 172         if (val[0] & ARIZONA_AIF2_SYNC_OVERCLOCKED_STS)
 173                 dev_err(arizona->dev, "AIF2 overclocked\n");
 174         if (val[0] & ARIZONA_AIF1_SYNC_OVERCLOCKED_STS)
 175                 dev_err(arizona->dev, "AIF1 overclocked\n");
 176         if (val[0] & ARIZONA_PAD_CTRL_OVERCLOCKED_STS)
 177                 dev_err(arizona->dev, "Pad control overclocked\n");
 178
 179         if (val[1] & ARIZONA_SLIMBUS_SUBSYS_OVERCLOCKED_STS)
 180                 dev_err(arizona->dev, "Slimbus subsystem overclocked\n");
 181         if (val[1] & ARIZONA_SLIMBUS_ASYNC_OVERCLOCKED_STS)
 182                 dev_err(arizona->dev, "Slimbus async overclocked\n");
 183         if (val[1] & ARIZONA_SLIMBUS_SYNC_OVERCLOCKED_STS)
 184                 dev_err(arizona->dev, "Slimbus sync overclocked\n");
 185         if (val[1] & ARIZONA_ASRC_ASYNC_SYS_OVERCLOCKED_STS)
 186                 dev_err(arizona->dev, "ASRC async system overclocked\n");
 187         if (val[1] & ARIZONA_ASRC_ASYNC_WARP_OVERCLOCKED_STS)
 188                 dev_err(arizona->dev, "ASRC async WARP overclocked\n");
 189         if (val[1] & ARIZONA_ASRC_SYNC_SYS_OVERCLOCKED_STS)
 190                 dev_err(arizona->dev, "ASRC sync system overclocked\n");
 191         if (val[1] & ARIZONA_ASRC_SYNC_WARP_OVERCLOCKED_STS)
 192                 dev_err(arizona->dev, "ASRC sync WARP overclocked\n");
 193         if (val[1] & ARIZONA_ADSP2_1_OVERCLOCKED_STS)
 194                 dev_err(arizona->dev, "DSP1 overclocked\n");
 195         if (val[1] & ARIZONA_ISRC2_OVERCLOCKED_STS)
 196                 dev_err(arizona->dev, "ISRC2 overclocked\n");
 197         if (val[1] & ARIZONA_ISRC1_OVERCLOCKED_STS)
 198                 dev_err(arizona->dev, "ISRC1 overclocked\n");
 199
 200         return IRQ_HANDLED;
 201 }
 202
 203 static int arizona_poll_reg(struct arizona *arizona,
 204                             int timeout, unsigned int reg,
 205                             unsigned int mask, unsigned int target)
 206 {
 207         unsigned int val = 0;
 208         int ret, i;
 209
 210         for (i = 0; i < timeout; i++) {
 211                 ret = regmap_read(arizona->regmap, reg, &val);
 212                 if (ret != 0) {
 213                         dev_err(arizona->dev, "Failed to read reg %u: %d\n",
 214                                 reg, ret);
 215                         continue;
 216                 }
 217
 218                 if ((val & mask) == target)
 219                         return 0;
 220
 221                 msleep(1);
 222         }
 223
 224         dev_err(arizona->dev, "Polling reg %u timed out: %x\n", reg, val);
 225         return -ETIMEDOUT;
 226 }
 227
 228 static int arizona_wait_for_boot(struct arizona *arizona)
 229 {
 230         int ret;
 231
 232         /*
 233          * We can't use an interrupt as we need to runtime resume to do so,
 234          * we won't race with the interrupt handler as it'll be blocked on
 235          * runtime resume.
 236          */
 237         ret = arizona_poll_reg(arizona, 5, ARIZONA_INTERRUPT_RAW_STATUS_5,
 238                                ARIZONA_BOOT_DONE_STS, ARIZONA_BOOT_DONE_STS);
 239
 240         if (!ret)
 241                 regmap_write(arizona->regmap, ARIZONA_INTERRUPT_STATUS_5,
 242                              ARIZONA_BOOT_DONE_STS);
 243
 244         pm_runtime_mark_last_busy(arizona->dev);
 245
 246         return ret;
 247 }
 248
 249 static int arizona_apply_hardware_patch(struct arizona* arizona)
 250 {
 251         unsigned int fll, sysclk;
 252         int ret, err;
 253
 254         /* Cache existing FLL and SYSCLK settings */
 255         ret = regmap_read(arizona->regmap, ARIZONA_FLL1_CONTROL_1, &fll);
 256         if (ret != 0) {
 257                 dev_err(arizona->dev, "Failed to cache FLL settings: %d\n",
 258                         ret);
 259                 return ret;
 260         }
 261         ret = regmap_read(arizona->regmap, ARIZONA_SYSTEM_CLOCK_1, &sysclk);
 262         if (ret != 0) {
 263                 dev_err(arizona->dev, "Failed to cache SYSCLK settings: %d\n",
 264                         ret);
 265                 return ret;
 266         }
 267
 268         /* Start up SYSCLK using the FLL in free running mode */
 269         ret = regmap_write(arizona->regmap, ARIZONA_FLL1_CONTROL_1,
 270                         ARIZONA_FLL1_ENA | ARIZONA_FLL1_FREERUN);
 271         if (ret != 0) {
 272                 dev_err(arizona->dev,
 273                         "Failed to start FLL in freerunning mode: %d\n",
 274                         ret);
 275                 return ret;
 276         }
 277         ret = arizona_poll_reg(arizona, 25, ARIZONA_INTERRUPT_RAW_STATUS_5,
 278                                ARIZONA_FLL1_CLOCK_OK_STS,
 279                                ARIZONA_FLL1_CLOCK_OK_STS);
 280         if (ret != 0) {
 281                 ret = -ETIMEDOUT;
 282                 goto err_fll;
 283         }
 284
 285         ret = regmap_write(arizona->regmap, ARIZONA_SYSTEM_CLOCK_1, 0x0144);
 286         if (ret != 0) {
 287                 dev_err(arizona->dev, "Failed to start SYSCLK: %d\n", ret);
 288                 goto err_fll;
 289         }
 290
 291         /* Start the write sequencer and wait for it to finish */
 292         ret = regmap_write(arizona->regmap, ARIZONA_WRITE_SEQUENCER_CTRL_0,
 293                         ARIZONA_WSEQ_ENA | ARIZONA_WSEQ_START | 160);
 294         if (ret != 0) {
 295                 dev_err(arizona->dev, "Failed to start write sequencer: %d\n",
 296                         ret);
 297                 goto err_sysclk;
 298         }
 299         ret = arizona_poll_reg(arizona, 5, ARIZONA_WRITE_SEQUENCER_CTRL_1,
 300                                ARIZONA_WSEQ_BUSY, 0);
 301         if (ret != 0) {
 302                 regmap_write(arizona->regmap, ARIZONA_WRITE_SEQUENCER_CTRL_0,
 303                                 ARIZONA_WSEQ_ABORT);
 304                 ret = -ETIMEDOUT;
 305         }
 306
 307 err_sysclk:
 308         err = regmap_write(arizona->regmap, ARIZONA_SYSTEM_CLOCK_1, sysclk);
 309         if (err != 0) {
 310                 dev_err(arizona->dev,
 311                         "Failed to re-apply old SYSCLK settings: %d\n",
 312                         err);
 313         }
 314
 315 err_fll:
 316         err = regmap_write(arizona->regmap, ARIZONA_FLL1_CONTROL_1, fll);
 317         if (err != 0) {
 318                 dev_err(arizona->dev,
 319                         "Failed to re-apply old FLL settings: %d\n",
 320                         err);
 321         }
 322
 323         if (ret != 0)
 324                 return ret;
 325         else
 326                 return err;
 327 }
 328
 329 #ifdef CONFIG_PM_RUNTIME
 330 static int arizona_runtime_resume(struct device *dev)
 331 {
 332         struct arizona *arizona = dev_get_drvdata(dev);
 333         int ret;
 334
 335         dev_dbg(arizona->dev, "Leaving AoD mode\n");
 336
 337         ret = regulator_enable(arizona->dcvdd);
 338         if (ret != 0) {
 339                 dev_err(arizona->dev, "Failed to enable DCVDD: %d\n", ret);
 340                 return ret;
 341         }
 342
 343         regcache_cache_only(arizona->regmap, false);
 344
 345         switch (arizona->type) {
 346         case WM5102:
 347                 if (arizona->external_dcvdd) {
 348                         ret = regmap_update_bits(arizona->regmap,
 349                                                  ARIZONA_ISOLATION_CONTROL,
 350                                                  ARIZONA_ISOLATE_DCVDD1, 0);
 351                         if (ret != 0) {
 352                                 dev_err(arizona->dev,
 353                                         "Failed to connect DCVDD: %d\n", ret);
 354                                 goto err;
 355                         }
 356                 }
 357
 358                 ret = wm5102_patch(arizona);
 359                 if (ret != 0) {
 360                         dev_err(arizona->dev, "Failed to apply patch: %d\n",
 361                                 ret);
 362                         goto err;
 363                 }
 364
 365                 ret = arizona_apply_hardware_patch(arizona);
 366                 if (ret != 0) {
 367                         dev_err(arizona->dev,
 368                                 "Failed to apply hardware patch: %d\n",
 369                                 ret);
 370                         goto err;
 371                 }
 372                 break;
 373         default:
 374                 ret = arizona_wait_for_boot(arizona);
 375                 if (ret != 0) {
 376                         goto err;
 377                 }
 378
 379                 if (arizona->external_dcvdd) {
 380                         ret = regmap_update_bits(arizona->regmap,
 381                                                  ARIZONA_ISOLATION_CONTROL,
 382                                                  ARIZONA_ISOLATE_DCVDD1, 0);
 383                         if (ret != 0) {
 384                                 dev_err(arizona->dev,
 385                                         "Failed to connect DCVDD: %d\n", ret);
 386                                 goto err;
 387                         }
 388                 }
 389                 break;
 390         }
 391
 392         switch (arizona->type) {
 393         case WM5102:
 394                 ret = wm5102_patch(arizona);
 395                 if (ret != 0) {
 396                         dev_err(arizona->dev, "Failed to apply patch: %d\n",
 397                                 ret);
 398                         goto err;
 399                 }
 400         default:
 401                 break;
 402         }
 403
 404         ret = regcache_sync(arizona->regmap);
 405         if (ret != 0) {
 406                 dev_err(arizona->dev, "Failed to restore register cache\n");
 407                 goto err;
 408         }
 409
 410         return 0;
 411
 412 err:
 413         regcache_cache_only(arizona->regmap, true);
 414         regulator_disable(arizona->dcvdd);
 415         return ret;
 416 }
 417
 418 static int arizona_runtime_suspend(struct device *dev)
 419 {
 420         struct arizona *arizona = dev_get_drvdata(dev);
 421         int ret;
 422
 423         dev_dbg(arizona->dev, "Entering AoD mode\n");
 424
 425         if (arizona->external_dcvdd) {
 426                 ret = regmap_update_bits(arizona->regmap,
 427                                          ARIZONA_ISOLATION_CONTROL,
 428                                          ARIZONA_ISOLATE_DCVDD1,
 429                                          ARIZONA_ISOLATE_DCVDD1);
 430                 if (ret != 0) {
 431                         dev_err(arizona->dev, "Failed to isolate DCVDD: %d\n",
 432                                 ret);
 433                         return ret;
 434                 }
 435         }
 436
 437         regcache_cache_only(arizona->regmap, true);
 438         regcache_mark_dirty(arizona->regmap);
 439         regulator_disable(arizona->dcvdd);
 440
 441         return 0;
 442 }
 443 #endif
 444
 445 #ifdef CONFIG_PM_SLEEP
 446 static int arizona_suspend(struct device *dev)
 447 {
 448         struct arizona *arizona = dev_get_drvdata(dev);
 449
 450         dev_dbg(arizona->dev, "Suspend, disabling IRQ\n");
 451         disable_irq(arizona->irq);
 452
 453         return 0;
 454 }
 455
 456 static int arizona_suspend_late(struct device *dev)
 457 {
 458         struct arizona *arizona = dev_get_drvdata(dev);
 459
 460         dev_dbg(arizona->dev, "Late suspend, reenabling IRQ\n");
 461         enable_irq(arizona->irq);
 462
 463         return 0;
 464 }
 465
 466 static int arizona_resume_noirq(struct device *dev)
 467 {
 468         struct arizona *arizona = dev_get_drvdata(dev);
 469
 470         dev_dbg(arizona->dev, "Early resume, disabling IRQ\n");
 471         disable_irq(arizona->irq);
 472
 473         return 0;
 474 }
 475
 476 static int arizona_resume(struct device *dev)
 477 {
 478         struct arizona *arizona = dev_get_drvdata(dev);
 479
 480         dev_dbg(arizona->dev, "Late resume, reenabling IRQ\n");
 481         enable_irq(arizona->irq);
 482
 483         return 0;
 484 }
 485 #endif
 486
 487 const struct dev_pm_ops arizona_pm_ops = {
 488         SET_RUNTIME_PM_OPS(arizona_runtime_suspend,
 489                            arizona_runtime_resume,
 490                            NULL)
 491         SET_SYSTEM_SLEEP_PM_OPS(arizona_suspend, arizona_resume)
 492 #ifdef CONFIG_PM_SLEEP
 493         .suspend_late = arizona_suspend_late,
 494         .resume_noirq = arizona_resume_noirq,
 495 #endif
 496 };
 497 EXPORT_SYMBOL_GPL(arizona_pm_ops);
 498
 499 #ifdef CONFIG_OF
 500 int arizona_of_get_type(struct device *dev)
 501 {
 502         const struct of_device_id *id = of_match_device(arizona_of_match, dev);
 503
 504         if (id)
 505                 return (int)id->data;
 506         else
 507                 return 0;
 508 }
 509 EXPORT_SYMBOL_GPL(arizona_of_get_type);
 510
 511 static int arizona_of_get_core_pdata(struct arizona *arizona)
 512 {
 513         int ret, i;
 514
 515         arizona->pdata.reset = of_get_named_gpio(arizona->dev->of_node,
 516                                                  "wlf,reset", 0);
 517         if (arizona->pdata.reset < 0)
 518                 arizona->pdata.reset = 0;
 519
 520         arizona->pdata.ldoena = of_get_named_gpio(arizona->dev->of_node,
 521                                                   "wlf,ldoena", 0);
 522         if (arizona->pdata.ldoena < 0)
 523                 arizona->pdata.ldoena = 0;
 524
 525         ret = of_property_read_u32_array(arizona->dev->of_node,
 526                                          "wlf,gpio-defaults",
 527                                          arizona->pdata.gpio_defaults,
 528                                          ARRAY_SIZE(arizona->pdata.gpio_defaults));
 529         if (ret >= 0) {
 530                 /*
 531                  * All values are literal except out of range values
 532                  * which are chip default, translate into platform
 533                  * data which uses 0 as chip default and out of range
 534                  * as zero.
 535                  */
 536                 for (i = 0; i < ARRAY_SIZE(arizona->pdata.gpio_defaults); i++) {
 537                         if (arizona->pdata.gpio_defaults[i] > 0xffff)
 538                                 arizona->pdata.gpio_defaults[i] = 0;
 539                         else if (arizona->pdata.gpio_defaults[i] == 0)
 540                                 arizona->pdata.gpio_defaults[i] = 0x10000;
 541                 }
 542         } else {
 543                 dev_err(arizona->dev, "Failed to parse GPIO defaults: %d\n",
 544                         ret);
 545         }
 546
 547         return 0;
 548 }
 549
 550 const struct of_device_id arizona_of_match[] = {
 551         { .compatible = "wlf,wm5102", .data = (void *)WM5102 },
 552         { .compatible = "wlf,wm5110", .data = (void *)WM5110 },
 553         { .compatible = "wlf,wm8997", .data = (void *)WM8997 },
 554         {},
 555 };
 556 EXPORT_SYMBOL_GPL(arizona_of_match);
 557 #else
 558 static inline int arizona_of_get_core_pdata(struct arizona *arizona)
 559 {
 560         return 0;
 561 }
 562 #endif
 563
 564 static const struct mfd_cell early_devs[] = {
 565         { .name = "arizona-ldo1" },
 566 };
 567
 568 static const char *wm5102_supplies[] = {
 569         "DBVDD2",
 570         "DBVDD3",
 571         "CPVDD",
 572         "SPKVDDL",
 573         "SPKVDDR",
 574 };
 575
 576 static const struct mfd_cell wm5102_devs[] = {
 577         { .name = "arizona-micsupp" },
 578         { .name = "arizona-extcon" },
 579         { .name = "arizona-gpio" },
 580         { .name = "arizona-haptics" },
 581         { .name = "arizona-pwm" },
 582         {
 583                 .name = "wm5102-codec",
 584                 .parent_supplies = wm5102_supplies,
 585                 .num_parent_supplies = ARRAY_SIZE(wm5102_supplies),
 586         },
 587 };
 588
 589 static const struct mfd_cell wm5110_devs[] = {
 590         { .name = "arizona-micsupp" },
 591         { .name = "arizona-extcon" },
 592         { .name = "arizona-gpio" },
 593         { .name = "arizona-haptics" },
 594         { .name = "arizona-pwm" },
 595         {
 596                 .name = "wm5110-codec",
 597                 .parent_supplies = wm5102_supplies,
 598                 .num_parent_supplies = ARRAY_SIZE(wm5102_supplies),
 599         },
 600 };
 601
 602 static const char *wm8997_supplies[] = {
 603         "DBVDD2",
 604         "CPVDD",
 605         "SPKVDD",
 606 };
 607
 608 static const struct mfd_cell wm8997_devs[] = {
 609         { .name = "arizona-micsupp" },
 610         { .name = "arizona-extcon" },
 611         { .name = "arizona-gpio" },
 612         { .name = "arizona-haptics" },
 613         { .name = "arizona-pwm" },
 614         {
 615                 .name = "wm8997-codec",
 616                 .parent_supplies = wm8997_supplies,
 617                 .num_parent_supplies = ARRAY_SIZE(wm8997_supplies),
 618         },
 619 };
 620
 621 int arizona_dev_init(struct arizona *arizona)
 622 {
 623         struct device *dev = arizona->dev;
 624         const char *type_name;
 625         unsigned int reg, val;
 626         int (*apply_patch)(struct arizona *) = NULL;
 627         int ret, i;
 628
 629         dev_set_drvdata(arizona->dev, arizona);
 630         mutex_init(&arizona->clk_lock);
 631
 632         if (dev_get_platdata(arizona->dev))
 633                 memcpy(&arizona->pdata, dev_get_platdata(arizona->dev),
 634                        sizeof(arizona->pdata));
 635         else
 636                 arizona_of_get_core_pdata(arizona);
 637
 638         regcache_cache_only(arizona->regmap, true);
 639
 640         switch (arizona->type) {
 641         case WM5102:
 642         case WM5110:
 643         case WM8997:
 644                 for (i = 0; i < ARRAY_SIZE(wm5102_core_supplies); i++)
 645                         arizona->core_supplies[i].supply
 646                                 = wm5102_core_supplies[i];
 647                 arizona->num_core_supplies = ARRAY_SIZE(wm5102_core_supplies);
 648                 break;
 649         default:
 650                 dev_err(arizona->dev, "Unknown device type %d\n",
 651                         arizona->type);
 652                 return -EINVAL;
 653         }
 654
 655         ret = mfd_add_devices(arizona->dev, -1, early_devs,
 656                               ARRAY_SIZE(early_devs), NULL, 0, NULL);
 657         if (ret != 0) {
 658                 dev_err(dev, "Failed to add early children: %d\n", ret);
 659                 return ret;
 660         }
 661
 662         ret = devm_regulator_bulk_get(dev, arizona->num_core_supplies,
 663                                       arizona->core_supplies);
 664         if (ret != 0) {
 665                 dev_err(dev, "Failed to request core supplies: %d\n",
 666                         ret);
 667                 goto err_early;
 668         }
 669
 670         arizona->dcvdd = devm_regulator_get(arizona->dev, "DCVDD");
 671         if (IS_ERR(arizona->dcvdd)) {
 672                 ret = PTR_ERR(arizona->dcvdd);
 673                 dev_err(dev, "Failed to request DCVDD: %d\n", ret);
 674                 goto err_early;
 675         }
 676
 677         if (arizona->pdata.reset) {
 678                 /* Start out with /RESET low to put the chip into reset */
 679                 ret = gpio_request_one(arizona->pdata.reset,
 680                                        GPIOF_DIR_OUT | GPIOF_INIT_LOW,
 681                                        "arizona /RESET");
 682                 if (ret != 0) {
 683                         dev_err(dev, "Failed to request /RESET: %d\n", ret);
 684                         goto err_early;
 685                 }
 686         }
 687
 688         ret = regulator_bulk_enable(arizona->num_core_supplies,
 689                                     arizona->core_supplies);
 690         if (ret != 0) {
 691                 dev_err(dev, "Failed to enable core supplies: %d\n",
 692                         ret);
 693                 goto err_early;
 694         }
 695
 696         ret = regulator_enable(arizona->dcvdd);
 697         if (ret != 0) {
 698                 dev_err(dev, "Failed to enable DCVDD: %d\n", ret);
 699                 goto err_enable;
 700         }
 701
 702         if (arizona->pdata.reset) {
 703                 gpio_set_value_cansleep(arizona->pdata.reset, 1);
 704                 msleep(1);
 705         }
 706
 707         regcache_cache_only(arizona->regmap, false);
 708
 709         /* Verify that this is a chip we know about */
 710         ret = regmap_read(arizona->regmap, ARIZONA_SOFTWARE_RESET, &reg);
 711         if (ret != 0) {
 712                 dev_err(dev, "Failed to read ID register: %d\n", ret);
 713                 goto err_reset;
 714         }
 715
 716         switch (reg) {
 717         case 0x5102:
 718         case 0x5110:
 719         case 0x8997:
 720                 break;
 721         default:
 722                 dev_err(arizona->dev, "Unknown device ID: %x\n", reg);
 723                 goto err_reset;
 724         }
 725
 726         /* If we have a /RESET GPIO we'll already be reset */
 727         if (!arizona->pdata.reset) {
 728                 regcache_mark_dirty(arizona->regmap);
 729
 730                 ret = regmap_write(arizona->regmap, ARIZONA_SOFTWARE_RESET, 0);
 731                 if (ret != 0) {
 732                         dev_err(dev, "Failed to reset device: %d\n", ret);
 733                         goto err_reset;
 734                 }
 735
 736                 msleep(1);
 737
 738                 ret = regcache_sync(arizona->regmap);
 739                 if (ret != 0) {
 740                         dev_err(dev, "Failed to sync device: %d\n", ret);
 741                         goto err_reset;
 742                 }
 743         }
 744
 745         /* Ensure device startup is complete */
 746         switch (arizona->type) {
 747         case WM5102:
 748                 ret = regmap_read(arizona->regmap, 0x19, &val);
 749                 if (ret != 0)
 750                         dev_err(dev,
 751                                 "Failed to check write sequencer state: %d\n",
 752                                 ret);
 753                 else if (val & 0x01)
 754                         break;
 755                 /* Fall through */
 756         default:
 757                 ret = arizona_wait_for_boot(arizona);
 758                 if (ret != 0) {
 759                         dev_err(arizona->dev,
 760                                 "Device failed initial boot: %d\n", ret);
 761                         goto err_reset;
 762                 }
 763                 break;
 764         }
 765
 766         /* Read the device ID information & do device specific stuff */
 767         ret = regmap_read(arizona->regmap, ARIZONA_SOFTWARE_RESET, &reg);
 768         if (ret != 0) {
 769                 dev_err(dev, "Failed to read ID register: %d\n", ret);
 770                 goto err_reset;
 771         }
 772
 773         ret = regmap_read(arizona->regmap, ARIZONA_DEVICE_REVISION,
 774                           &arizona->rev);
 775         if (ret != 0) {
 776                 dev_err(dev, "Failed to read revision register: %d\n", ret);
 777                 goto err_reset;
 778         }
 779         arizona->rev &= ARIZONA_DEVICE_REVISION_MASK;
 780
 781         switch (reg) {
 782 #ifdef CONFIG_MFD_WM5102
 783         case 0x5102:
 784                 type_name = "WM5102";
 785                 if (arizona->type != WM5102) {
 786                         dev_err(arizona->dev, "WM5102 registered as %d\n",
 787                                 arizona->type);
 788                         arizona->type = WM5102;
 789                 }
 790                 apply_patch = wm5102_patch;
 791                 arizona->rev &= 0x7;
 792                 break;
 793 #endif
 794 #ifdef CONFIG_MFD_WM5110
 795         case 0x5110:
 796                 type_name = "WM5110";
 797                 if (arizona->type != WM5110) {
 798                         dev_err(arizona->dev, "WM5110 registered as %d\n",
 799                                 arizona->type);
 800                         arizona->type = WM5110;
 801                 }
 802                 apply_patch = wm5110_patch;
 803                 break;
 804 #endif
 805 #ifdef CONFIG_MFD_WM8997
 806         case 0x8997:
 807                 type_name = "WM8997";
 808                 if (arizona->type != WM8997) {
 809                         dev_err(arizona->dev, "WM8997 registered as %d\n",
 810                                 arizona->type);
 811                         arizona->type = WM8997;
 812                 }
 813                 apply_patch = wm8997_patch;
 814                 break;
 815 #endif
 816         default:
 817                 dev_err(arizona->dev, "Unknown device ID %x\n", reg);
 818                 goto err_reset;
 819         }
 820
 821         dev_info(dev, "%s revision %c\n", type_name, arizona->rev + 'A');
 822
 823         if (apply_patch) {
 824                 ret = apply_patch(arizona);
 825                 if (ret != 0) {
 826                         dev_err(arizona->dev, "Failed to apply patch: %d\n",
 827                                 ret);
 828                         goto err_reset;
 829                 }
 830
 831                 switch (arizona->type) {
 832                 case WM5102:
 833                         ret = arizona_apply_hardware_patch(arizona);
 834                         if (ret != 0) {
 835                                 dev_err(arizona->dev,
 836                                         "Failed to apply hardware patch: %d\n",
 837                                         ret);
 838                                 goto err_reset;
 839                         }
 840                         break;
 841                 default:
 842                         break;
 843                 }
 844         }
 845
 846         for (i = 0; i < ARRAY_SIZE(arizona->pdata.gpio_defaults); i++) {
 847                 if (!arizona->pdata.gpio_defaults[i])
 848                         continue;
 849
 850                 regmap_write(arizona->regmap, ARIZONA_GPIO1_CTRL + i,
 851                              arizona->pdata.gpio_defaults[i]);
 852         }
 853
 854         /*
 855          * LDO1 can only be used to supply DCVDD so if it has no
 856          * consumers then DCVDD is supplied externally.
 857          */
 858         if (arizona->pdata.ldo1 &&
 859             arizona->pdata.ldo1->num_consumer_supplies == 0)
 860                 arizona->external_dcvdd = true;
 861
 862         pm_runtime_set_autosuspend_delay(arizona->dev, 100);
 863         pm_runtime_use_autosuspend(arizona->dev);
 864         pm_runtime_enable(arizona->dev);
 865
 866         /* Chip default */
 867         if (!arizona->pdata.clk32k_src)
 868                 arizona->pdata.clk32k_src = ARIZONA_32KZ_MCLK2;
 869
 870         switch (arizona->pdata.clk32k_src) {
 871         case ARIZONA_32KZ_MCLK1:
 872         case ARIZONA_32KZ_MCLK2:
 873                 regmap_update_bits(arizona->regmap, ARIZONA_CLOCK_32K_1,
 874                                    ARIZONA_CLK_32K_SRC_MASK,
 875                                    arizona->pdata.clk32k_src - 1);
 876                 arizona_clk32k_enable(arizona);
 877                 break;
 878         case ARIZONA_32KZ_NONE:
 879                 regmap_update_bits(arizona->regmap, ARIZONA_CLOCK_32K_1,
 880                                    ARIZONA_CLK_32K_SRC_MASK, 2);
 881                 break;
 882         default:
 883                 dev_err(arizona->dev, "Invalid 32kHz clock source: %d\n",
 884                         arizona->pdata.clk32k_src);
 885                 ret = -EINVAL;
 886                 goto err_reset;
 887         }
 888
 889         for (i = 0; i < ARIZONA_MAX_MICBIAS; i++) {
 890                 if (!arizona->pdata.micbias[i].mV &&
 891                     !arizona->pdata.micbias[i].bypass)
 892                         continue;
 893
 894                 /* Apply default for bypass mode */
 895                 if (!arizona->pdata.micbias[i].mV)
 896                         arizona->pdata.micbias[i].mV = 2800;
 897
 898                 val = (arizona->pdata.micbias[i].mV - 1500) / 100;
 899
 900                 val <<= ARIZONA_MICB1_LVL_SHIFT;
 901
 902                 if (arizona->pdata.micbias[i].ext_cap)
 903                         val |= ARIZONA_MICB1_EXT_CAP;
 904
 905                 if (arizona->pdata.micbias[i].discharge)
 906                         val |= ARIZONA_MICB1_DISCH;
 907
 908                 if (arizona->pdata.micbias[i].soft_start)
 909                         val |= ARIZONA_MICB1_RATE;
 910
 911                 if (arizona->pdata.micbias[i].bypass)
 912                         val |= ARIZONA_MICB1_BYPASS;
 913
 914                 regmap_update_bits(arizona->regmap,
 915                                    ARIZONA_MIC_BIAS_CTRL_1 + i,
 916                                    ARIZONA_MICB1_LVL_MASK |
 917                                    ARIZONA_MICB1_DISCH |
 918                                    ARIZONA_MICB1_BYPASS |
 919                                    ARIZONA_MICB1_RATE, val);
 920         }
 921
 922         for (i = 0; i < ARIZONA_MAX_INPUT; i++) {
 923                 /* Default for both is 0 so noop with defaults */
 924                 val = arizona->pdata.dmic_ref[i]
 925                         << ARIZONA_IN1_DMIC_SUP_SHIFT;
 926                 val |= arizona->pdata.inmode[i] << ARIZONA_IN1_MODE_SHIFT;
 927
 928                 regmap_update_bits(arizona->regmap,
 929                                    ARIZONA_IN1L_CONTROL + (i * 8),
 930                                    ARIZONA_IN1_DMIC_SUP_MASK |
 931                                    ARIZONA_IN1_MODE_MASK, val);
 932         }
 933
 934         for (i = 0; i < ARIZONA_MAX_OUTPUT; i++) {
 935                 /* Default is 0 so noop with defaults */
 936                 if (arizona->pdata.out_mono[i])
 937                         val = ARIZONA_OUT1_MONO;
 938                 else
 939                         val = 0;
 940
 941                 regmap_update_bits(arizona->regmap,
 942                                    ARIZONA_OUTPUT_PATH_CONFIG_1L + (i * 8),
 943                                    ARIZONA_OUT1_MONO, val);
 944         }
 945
 946         for (i = 0; i < ARIZONA_MAX_PDM_SPK; i++) {
 947                 if (arizona->pdata.spk_mute[i])
 948                         regmap_update_bits(arizona->regmap,
 949                                            ARIZONA_PDM_SPK1_CTRL_1 + (i * 2),
 950                                            ARIZONA_SPK1_MUTE_ENDIAN_MASK |
 951                                            ARIZONA_SPK1_MUTE_SEQ1_MASK,
 952                                            arizona->pdata.spk_mute[i]);
 953
 954                 if (arizona->pdata.spk_fmt[i])
 955                         regmap_update_bits(arizona->regmap,
 956                                            ARIZONA_PDM_SPK1_CTRL_2 + (i * 2),
 957                                            ARIZONA_SPK1_FMT_MASK,
 958                                            arizona->pdata.spk_fmt[i]);
 959         }
 960
 961         /* Set up for interrupts */
 962         ret = arizona_irq_init(arizona);
 963         if (ret != 0)
 964                 goto err_reset;
 965
 966         arizona_request_irq(arizona, ARIZONA_IRQ_CLKGEN_ERR, "CLKGEN error",
 967                             arizona_clkgen_err, arizona);
 968         arizona_request_irq(arizona, ARIZONA_IRQ_OVERCLOCKED, "Overclocked",
 969                             arizona_overclocked, arizona);
 970         arizona_request_irq(arizona, ARIZONA_IRQ_UNDERCLOCKED, "Underclocked",
 971                             arizona_underclocked, arizona);
 972
 973         switch (arizona->type) {
 974         case WM5102:
 975                 ret = mfd_add_devices(arizona->dev, -1, wm5102_devs,
 976                                       ARRAY_SIZE(wm5102_devs), NULL, 0, NULL);
 977                 break;
 978         case WM5110:
 979                 ret = mfd_add_devices(arizona->dev, -1, wm5110_devs,
 980                                       ARRAY_SIZE(wm5110_devs), NULL, 0, NULL);
 981                 break;
 982         case WM8997:
 983                 ret = mfd_add_devices(arizona->dev, -1, wm8997_devs,
 984                                       ARRAY_SIZE(wm8997_devs), NULL, 0, NULL);
 985                 break;
 986         }
 987
 988         if (ret != 0) {
 989                 dev_err(arizona->dev, "Failed to add subdevices: %d\n", ret);
 990                 goto err_irq;
 991         }
 992
 993 #ifdef CONFIG_PM_RUNTIME
 994         regulator_disable(arizona->dcvdd);
 995 #endif
 996
 997         return 0;
 998
 999 err_irq:
1000         arizona_irq_exit(arizona);
1001 err_reset:
1002         if (arizona->pdata.reset) {
1003                 gpio_set_value_cansleep(arizona->pdata.reset, 0);
1004                 gpio_free(arizona->pdata.reset);
1005         }
1006         regulator_disable(arizona->dcvdd);
1007 err_enable:
1008         regulator_bulk_disable(arizona->num_core_supplies,
1009                                arizona->core_supplies);
1010 err_early:
1011         mfd_remove_devices(dev);
1012         return ret;
1013 }
1014 EXPORT_SYMBOL_GPL(arizona_dev_init);
1015
1016 int arizona_dev_exit(struct arizona *arizona)
1017 {
1018         mfd_remove_devices(arizona->dev);
1019         arizona_free_irq(arizona, ARIZONA_IRQ_UNDERCLOCKED, arizona);
1020         arizona_free_irq(arizona, ARIZONA_IRQ_OVERCLOCKED, arizona);
1021         arizona_free_irq(arizona, ARIZONA_IRQ_CLKGEN_ERR, arizona);
1022         pm_runtime_disable(arizona->dev);
1023         arizona_irq_exit(arizona);
1024         if (arizona->pdata.reset)
1025                 gpio_set_value_cansleep(arizona->pdata.reset, 0);
1026         regulator_disable(arizona->dcvdd);
1027         regulator_bulk_disable(ARRAY_SIZE(arizona->core_supplies),
1028                                arizona->core_supplies);
1029         return 0;
1030 }
1031 EXPORT_SYMBOL_GPL(arizona_dev_exit);