drivers/mfd/arizona-core.c

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