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