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 #ifdef CONFIG_PM
 348 static int arizona_runtime_resume(struct device *dev)
 349 {
 350         struct arizona *arizona = dev_get_drvdata(dev);
 351         int ret;
 352
 353         dev_dbg(arizona->dev, "Leaving AoD mode\n");
 354
 355         ret = regulator_enable(arizona->dcvdd);
 356         if (ret != 0) {
 357                 dev_err(arizona->dev, "Failed to enable DCVDD: %d\n", ret);
 358                 return ret;
 359         }
 360
 361         regcache_cache_only(arizona->regmap, false);
 362
 363         switch (arizona->type) {
 364         case WM5102:
 365                 if (arizona->external_dcvdd) {
 366                         ret = regmap_update_bits(arizona->regmap,
 367                                                  ARIZONA_ISOLATION_CONTROL,
 368                                                  ARIZONA_ISOLATE_DCVDD1, 0);
 369                         if (ret != 0) {
 370                                 dev_err(arizona->dev,
 371                                         "Failed to connect DCVDD: %d\n", ret);
 372                                 goto err;
 373                         }
 374                 }
 375
 376                 ret = wm5102_patch(arizona);
 377                 if (ret != 0) {
 378                         dev_err(arizona->dev, "Failed to apply patch: %d\n",
 379                                 ret);
 380                         goto err;
 381                 }
 382
 383                 ret = arizona_apply_hardware_patch(arizona);
 384                 if (ret != 0) {
 385                         dev_err(arizona->dev,
 386                                 "Failed to apply hardware patch: %d\n",
 387                                 ret);
 388                         goto err;
 389                 }
 390                 break;
 391         default:
 392                 ret = arizona_wait_for_boot(arizona);
 393                 if (ret != 0) {
 394                         goto err;
 395                 }
 396
 397                 if (arizona->external_dcvdd) {
 398                         ret = regmap_update_bits(arizona->regmap,
 399                                                  ARIZONA_ISOLATION_CONTROL,
 400                                                  ARIZONA_ISOLATE_DCVDD1, 0);
 401                         if (ret != 0) {
 402                                 dev_err(arizona->dev,
 403                                         "Failed to connect DCVDD: %d\n", ret);
 404                                 goto err;
 405                         }
 406                 }
 407                 break;
 408         }
 409
 410         ret = regcache_sync(arizona->regmap);
 411         if (ret != 0) {
 412                 dev_err(arizona->dev, "Failed to restore register cache\n");
 413                 goto err;
 414         }
 415
 416         return 0;
 417
 418 err:
 419         regcache_cache_only(arizona->regmap, true);
 420         regulator_disable(arizona->dcvdd);
 421         return ret;
 422 }
 423
 424 static int arizona_runtime_suspend(struct device *dev)
 425 {
 426         struct arizona *arizona = dev_get_drvdata(dev);
 427         int ret;
 428
 429         dev_dbg(arizona->dev, "Entering AoD mode\n");
 430
 431         if (arizona->external_dcvdd) {
 432                 ret = regmap_update_bits(arizona->regmap,
 433                                          ARIZONA_ISOLATION_CONTROL,
 434                                          ARIZONA_ISOLATE_DCVDD1,
 435                                          ARIZONA_ISOLATE_DCVDD1);
 436                 if (ret != 0) {
 437                         dev_err(arizona->dev, "Failed to isolate DCVDD: %d\n",
 438                                 ret);
 439                         return ret;
 440                 }
 441         }
 442
 443         regcache_cache_only(arizona->regmap, true);
 444         regcache_mark_dirty(arizona->regmap);
 445         regulator_disable(arizona->dcvdd);
 446
 447         return 0;
 448 }
 449 #endif
 450
 451 #ifdef CONFIG_PM_SLEEP
 452 static int arizona_suspend(struct device *dev)
 453 {
 454         struct arizona *arizona = dev_get_drvdata(dev);
 455
 456         dev_dbg(arizona->dev, "Suspend, disabling IRQ\n");
 457         disable_irq(arizona->irq);
 458
 459         return 0;
 460 }
 461
 462 static int arizona_suspend_late(struct device *dev)
 463 {
 464         struct arizona *arizona = dev_get_drvdata(dev);
 465
 466         dev_dbg(arizona->dev, "Late suspend, reenabling IRQ\n");
 467         enable_irq(arizona->irq);
 468
 469         return 0;
 470 }
 471
 472 static int arizona_resume_noirq(struct device *dev)
 473 {
 474         struct arizona *arizona = dev_get_drvdata(dev);
 475
 476         dev_dbg(arizona->dev, "Early resume, disabling IRQ\n");
 477         disable_irq(arizona->irq);
 478
 479         return 0;
 480 }
 481
 482 static int arizona_resume(struct device *dev)
 483 {
 484         struct arizona *arizona = dev_get_drvdata(dev);
 485
 486         dev_dbg(arizona->dev, "Late resume, reenabling IRQ\n");
 487         enable_irq(arizona->irq);
 488
 489         return 0;
 490 }
 491 #endif
 492
 493 const struct dev_pm_ops arizona_pm_ops = {
 494         SET_RUNTIME_PM_OPS(arizona_runtime_suspend,
 495                            arizona_runtime_resume,
 496                            NULL)
 497         SET_SYSTEM_SLEEP_PM_OPS(arizona_suspend, arizona_resume)
 498 #ifdef CONFIG_PM_SLEEP
 499         .suspend_late = arizona_suspend_late,
 500         .resume_noirq = arizona_resume_noirq,
 501 #endif
 502 };
 503 EXPORT_SYMBOL_GPL(arizona_pm_ops);
 504
 505 #ifdef CONFIG_OF
 506 unsigned long arizona_of_get_type(struct device *dev)
 507 {
 508         const struct of_device_id *id = of_match_device(arizona_of_match, dev);
 509
 510         if (id)
 511                 return (unsigned long)id->data;
 512         else
 513                 return 0;
 514 }
 515 EXPORT_SYMBOL_GPL(arizona_of_get_type);
 516
 517 int arizona_of_get_named_gpio(struct arizona *arizona, const char *prop,
 518                               bool mandatory)
 519 {
 520         int gpio;
 521
 522         gpio = of_get_named_gpio(arizona->dev->of_node, prop, 0);
 523         if (gpio < 0) {
 524                 if (mandatory)
 525                         dev_err(arizona->dev,
 526                                 "Mandatory DT gpio %s missing/malformed: %d\n",
 527                                 prop, gpio);
 528
 529                 gpio = 0;
 530         }
 531
 532         return gpio;
 533 }
 534 EXPORT_SYMBOL_GPL(arizona_of_get_named_gpio);
 535
 536 static int arizona_of_get_core_pdata(struct arizona *arizona)
 537 {
 538         struct arizona_pdata *pdata = &arizona->pdata;
 539         struct property *prop;
 540         const __be32 *cur;
 541         u32 val;
 542         int ret, i;
 543         int count = 0;
 544
 545         pdata->reset = arizona_of_get_named_gpio(arizona, "wlf,reset", true);
 546
 547         ret = of_property_read_u32_array(arizona->dev->of_node,
 548                                          "wlf,gpio-defaults",
 549                                          arizona->pdata.gpio_defaults,
 550                                          ARRAY_SIZE(arizona->pdata.gpio_defaults));
 551         if (ret >= 0) {
 552                 /*
 553                  * All values are literal except out of range values
 554                  * which are chip default, translate into platform
 555                  * data which uses 0 as chip default and out of range
 556                  * as zero.
 557                  */
 558                 for (i = 0; i < ARRAY_SIZE(arizona->pdata.gpio_defaults); i++) {
 559                         if (arizona->pdata.gpio_defaults[i] > 0xffff)
 560                                 arizona->pdata.gpio_defaults[i] = 0;
 561                         else if (arizona->pdata.gpio_defaults[i] == 0)
 562                                 arizona->pdata.gpio_defaults[i] = 0x10000;
 563                 }
 564         } else {
 565                 dev_err(arizona->dev, "Failed to parse GPIO defaults: %d\n",
 566                         ret);
 567         }
 568
 569         of_property_for_each_u32(arizona->dev->of_node, "wlf,inmode", prop,
 570                                  cur, val) {
 571                 if (count == ARRAY_SIZE(arizona->pdata.inmode))
 572                         break;
 573
 574                 arizona->pdata.inmode[count] = val;
 575                 count++;
 576         }
 577
 578         count = 0;
 579         of_property_for_each_u32(arizona->dev->of_node, "wlf,dmic-ref", prop,
 580                                  cur, val) {
 581                 if (count == ARRAY_SIZE(arizona->pdata.dmic_ref))
 582                         break;
 583
 584                 arizona->pdata.dmic_ref[count] = val;
 585                 count++;
 586         }
 587
 588         return 0;
 589 }
 590
 591 const struct of_device_id arizona_of_match[] = {
 592         { .compatible = "wlf,wm5102", .data = (void *)WM5102 },
 593         { .compatible = "wlf,wm5110", .data = (void *)WM5110 },
 594         { .compatible = "wlf,wm8280", .data = (void *)WM8280 },
 595         { .compatible = "wlf,wm8997", .data = (void *)WM8997 },
 596         {},
 597 };
 598 EXPORT_SYMBOL_GPL(arizona_of_match);
 599 #else
 600 static inline int arizona_of_get_core_pdata(struct arizona *arizona)
 601 {
 602         return 0;
 603 }
 604 #endif
 605
 606 static const struct mfd_cell early_devs[] = {
 607         { .name = "arizona-ldo1" },
 608 };
 609
 610 static const char *wm5102_supplies[] = {
 611         "MICVDD",
 612         "DBVDD2",
 613         "DBVDD3",
 614         "CPVDD",
 615         "SPKVDDL",
 616         "SPKVDDR",
 617 };
 618
 619 static const struct mfd_cell wm5102_devs[] = {
 620         { .name = "arizona-micsupp" },
 621         {
 622                 .name = "arizona-extcon",
 623                 .parent_supplies = wm5102_supplies,
 624                 .num_parent_supplies = 1, /* We only need MICVDD */
 625         },
 626         { .name = "arizona-gpio" },
 627         { .name = "arizona-haptics" },
 628         { .name = "arizona-pwm" },
 629         {
 630                 .name = "wm5102-codec",
 631                 .parent_supplies = wm5102_supplies,
 632                 .num_parent_supplies = ARRAY_SIZE(wm5102_supplies),
 633         },
 634 };
 635
 636 static const struct mfd_cell wm5110_devs[] = {
 637         { .name = "arizona-micsupp" },
 638         {
 639                 .name = "arizona-extcon",
 640                 .parent_supplies = wm5102_supplies,
 641                 .num_parent_supplies = 1, /* We only need MICVDD */
 642         },
 643         { .name = "arizona-gpio" },
 644         { .name = "arizona-haptics" },
 645         { .name = "arizona-pwm" },
 646         {
 647                 .name = "wm5110-codec",
 648                 .parent_supplies = wm5102_supplies,
 649                 .num_parent_supplies = ARRAY_SIZE(wm5102_supplies),
 650         },
 651 };
 652
 653 static const char *wm8997_supplies[] = {
 654         "MICVDD",
 655         "DBVDD2",
 656         "CPVDD",
 657         "SPKVDD",
 658 };
 659
 660 static const struct mfd_cell wm8997_devs[] = {
 661         { .name = "arizona-micsupp" },
 662         {
 663                 .name = "arizona-extcon",
 664                 .parent_supplies = wm8997_supplies,
 665                 .num_parent_supplies = 1, /* We only need MICVDD */
 666         },
 667         { .name = "arizona-gpio" },
 668         { .name = "arizona-haptics" },
 669         { .name = "arizona-pwm" },
 670         {
 671                 .name = "wm8997-codec",
 672                 .parent_supplies = wm8997_supplies,
 673                 .num_parent_supplies = ARRAY_SIZE(wm8997_supplies),
 674         },
 675 };
 676
 677 int arizona_dev_init(struct arizona *arizona)
 678 {
 679         struct device *dev = arizona->dev;
 680         const char *type_name;
 681         unsigned int reg, val;
 682         int (*apply_patch)(struct arizona *) = NULL;
 683         int ret, i;
 684
 685         dev_set_drvdata(arizona->dev, arizona);
 686         mutex_init(&arizona->clk_lock);
 687
 688         if (dev_get_platdata(arizona->dev))
 689                 memcpy(&arizona->pdata, dev_get_platdata(arizona->dev),
 690                        sizeof(arizona->pdata));
 691         else
 692                 arizona_of_get_core_pdata(arizona);
 693
 694         regcache_cache_only(arizona->regmap, true);
 695
 696         switch (arizona->type) {
 697         case WM5102:
 698         case WM5110:
 699         case WM8280:
 700         case WM8997:
 701                 for (i = 0; i < ARRAY_SIZE(wm5102_core_supplies); i++)
 702                         arizona->core_supplies[i].supply
 703                                 = wm5102_core_supplies[i];
 704                 arizona->num_core_supplies = ARRAY_SIZE(wm5102_core_supplies);
 705                 break;
 706         default:
 707                 dev_err(arizona->dev, "Unknown device type %d\n",
 708                         arizona->type);
 709                 return -EINVAL;
 710         }
 711
 712         /* Mark DCVDD as external, LDO1 driver will clear if internal */
 713         arizona->external_dcvdd = true;
 714
 715         ret = mfd_add_devices(arizona->dev, -1, early_devs,
 716                               ARRAY_SIZE(early_devs), NULL, 0, NULL);
 717         if (ret != 0) {
 718                 dev_err(dev, "Failed to add early children: %d\n", ret);
 719                 return ret;
 720         }
 721
 722         ret = devm_regulator_bulk_get(dev, arizona->num_core_supplies,
 723                                       arizona->core_supplies);
 724         if (ret != 0) {
 725                 dev_err(dev, "Failed to request core supplies: %d\n",
 726                         ret);
 727                 goto err_early;
 728         }
 729
 730         /**
 731          * Don't use devres here because the only device we have to get
 732          * against is the MFD device and DCVDD will likely be supplied by
 733          * one of its children. Meaning that the regulator will be
 734          * destroyed by the time devres calls regulator put.
 735          */
 736         arizona->dcvdd = regulator_get(arizona->dev, "DCVDD");
 737         if (IS_ERR(arizona->dcvdd)) {
 738                 ret = PTR_ERR(arizona->dcvdd);
 739                 dev_err(dev, "Failed to request DCVDD: %d\n", ret);
 740                 goto err_early;
 741         }
 742
 743         if (arizona->pdata.reset) {
 744                 /* Start out with /RESET low to put the chip into reset */
 745                 ret = devm_gpio_request_one(arizona->dev, arizona->pdata.reset,
 746                                             GPIOF_DIR_OUT | GPIOF_INIT_LOW,
 747                                             "arizona /RESET");
 748                 if (ret != 0) {
 749                         dev_err(dev, "Failed to request /RESET: %d\n", ret);
 750                         goto err_dcvdd;
 751                 }
 752         }
 753
 754         ret = regulator_bulk_enable(arizona->num_core_supplies,
 755                                     arizona->core_supplies);
 756         if (ret != 0) {
 757                 dev_err(dev, "Failed to enable core supplies: %d\n",
 758                         ret);
 759                 goto err_dcvdd;
 760         }
 761
 762         ret = regulator_enable(arizona->dcvdd);
 763         if (ret != 0) {
 764                 dev_err(dev, "Failed to enable DCVDD: %d\n", ret);
 765                 goto err_enable;
 766         }
 767
 768         arizona_disable_reset(arizona);
 769
 770         regcache_cache_only(arizona->regmap, false);
 771
 772         /* Verify that this is a chip we know about */
 773         ret = regmap_read(arizona->regmap, ARIZONA_SOFTWARE_RESET, &reg);
 774         if (ret != 0) {
 775                 dev_err(dev, "Failed to read ID register: %d\n", ret);
 776                 goto err_reset;
 777         }
 778
 779         switch (reg) {
 780         case 0x5102:
 781         case 0x5110:
 782         case 0x8997:
 783                 break;
 784         default:
 785                 dev_err(arizona->dev, "Unknown device ID: %x\n", reg);
 786                 goto err_reset;
 787         }
 788
 789         /* If we have a /RESET GPIO we'll already be reset */
 790         if (!arizona->pdata.reset) {
 791                 ret = regmap_write(arizona->regmap, ARIZONA_SOFTWARE_RESET, 0);
 792                 if (ret != 0) {
 793                         dev_err(dev, "Failed to reset device: %d\n", ret);
 794                         goto err_reset;
 795                 }
 796
 797                 msleep(1);
 798         }
 799
 800         /* Ensure device startup is complete */
 801         switch (arizona->type) {
 802         case WM5102:
 803                 ret = regmap_read(arizona->regmap,
 804                                   ARIZONA_WRITE_SEQUENCER_CTRL_3, &val);
 805                 if (ret != 0)
 806                         dev_err(dev,
 807                                 "Failed to check write sequencer state: %d\n",
 808                                 ret);
 809                 else if (val & 0x01)
 810                         break;
 811                 /* Fall through */
 812         default:
 813                 ret = arizona_wait_for_boot(arizona);
 814                 if (ret != 0) {
 815                         dev_err(arizona->dev,
 816                                 "Device failed initial boot: %d\n", ret);
 817                         goto err_reset;
 818                 }
 819                 break;
 820         }
 821
 822         /* Read the device ID information & do device specific stuff */
 823         ret = regmap_read(arizona->regmap, ARIZONA_SOFTWARE_RESET, &reg);
 824         if (ret != 0) {
 825                 dev_err(dev, "Failed to read ID register: %d\n", ret);
 826                 goto err_reset;
 827         }
 828
 829         ret = regmap_read(arizona->regmap, ARIZONA_DEVICE_REVISION,
 830                           &arizona->rev);
 831         if (ret != 0) {
 832                 dev_err(dev, "Failed to read revision register: %d\n", ret);
 833                 goto err_reset;
 834         }
 835         arizona->rev &= ARIZONA_DEVICE_REVISION_MASK;
 836
 837         switch (reg) {
 838 #ifdef CONFIG_MFD_WM5102
 839         case 0x5102:
 840                 type_name = "WM5102";
 841                 if (arizona->type != WM5102) {
 842                         dev_err(arizona->dev, "WM5102 registered as %d\n",
 843                                 arizona->type);
 844                         arizona->type = WM5102;
 845                 }
 846                 apply_patch = wm5102_patch;
 847                 arizona->rev &= 0x7;
 848                 break;
 849 #endif
 850 #ifdef CONFIG_MFD_WM5110
 851         case 0x5110:
 852                 switch (arizona->type) {
 853                 case WM5110:
 854                         type_name = "WM5110";
 855                         break;
 856                 case WM8280:
 857                         type_name = "WM8280";
 858                         break;
 859                 default:
 860                         type_name = "WM5110";
 861                         dev_err(arizona->dev, "WM5110 registered as %d\n",
 862                                 arizona->type);
 863                         arizona->type = WM5110;
 864                         break;
 865                 }
 866                 apply_patch = wm5110_patch;
 867                 break;
 868 #endif
 869 #ifdef CONFIG_MFD_WM8997
 870         case 0x8997:
 871                 type_name = "WM8997";
 872                 if (arizona->type != WM8997) {
 873                         dev_err(arizona->dev, "WM8997 registered as %d\n",
 874                                 arizona->type);
 875                         arizona->type = WM8997;
 876                 }
 877                 apply_patch = wm8997_patch;
 878                 break;
 879 #endif
 880         default:
 881                 dev_err(arizona->dev, "Unknown device ID %x\n", reg);
 882                 goto err_reset;
 883         }
 884
 885         dev_info(dev, "%s revision %c\n", type_name, arizona->rev + 'A');
 886
 887         if (apply_patch) {
 888                 ret = apply_patch(arizona);
 889                 if (ret != 0) {
 890                         dev_err(arizona->dev, "Failed to apply patch: %d\n",
 891                                 ret);
 892                         goto err_reset;
 893                 }
 894
 895                 switch (arizona->type) {
 896                 case WM5102:
 897                         ret = arizona_apply_hardware_patch(arizona);
 898                         if (ret != 0) {
 899                                 dev_err(arizona->dev,
 900                                         "Failed to apply hardware patch: %d\n",
 901                                         ret);
 902                                 goto err_reset;
 903                         }
 904                         break;
 905                 default:
 906                         break;
 907                 }
 908         }
 909
 910         for (i = 0; i < ARRAY_SIZE(arizona->pdata.gpio_defaults); i++) {
 911                 if (!arizona->pdata.gpio_defaults[i])
 912                         continue;
 913
 914                 regmap_write(arizona->regmap, ARIZONA_GPIO1_CTRL + i,
 915                              arizona->pdata.gpio_defaults[i]);
 916         }
 917
 918         pm_runtime_set_autosuspend_delay(arizona->dev, 100);
 919         pm_runtime_use_autosuspend(arizona->dev);
 920         pm_runtime_enable(arizona->dev);
 921
 922         /* Chip default */
 923         if (!arizona->pdata.clk32k_src)
 924                 arizona->pdata.clk32k_src = ARIZONA_32KZ_MCLK2;
 925
 926         switch (arizona->pdata.clk32k_src) {
 927         case ARIZONA_32KZ_MCLK1:
 928         case ARIZONA_32KZ_MCLK2:
 929                 regmap_update_bits(arizona->regmap, ARIZONA_CLOCK_32K_1,
 930                                    ARIZONA_CLK_32K_SRC_MASK,
 931                                    arizona->pdata.clk32k_src - 1);
 932                 arizona_clk32k_enable(arizona);
 933                 break;
 934         case ARIZONA_32KZ_NONE:
 935                 regmap_update_bits(arizona->regmap, ARIZONA_CLOCK_32K_1,
 936                                    ARIZONA_CLK_32K_SRC_MASK, 2);
 937                 break;
 938         default:
 939                 dev_err(arizona->dev, "Invalid 32kHz clock source: %d\n",
 940                         arizona->pdata.clk32k_src);
 941                 ret = -EINVAL;
 942                 goto err_reset;
 943         }
 944
 945         for (i = 0; i < ARIZONA_MAX_MICBIAS; i++) {
 946                 if (!arizona->pdata.micbias[i].mV &&
 947                     !arizona->pdata.micbias[i].bypass)
 948                         continue;
 949
 950                 /* Apply default for bypass mode */
 951                 if (!arizona->pdata.micbias[i].mV)
 952                         arizona->pdata.micbias[i].mV = 2800;
 953
 954                 val = (arizona->pdata.micbias[i].mV - 1500) / 100;
 955
 956                 val <<= ARIZONA_MICB1_LVL_SHIFT;
 957
 958                 if (arizona->pdata.micbias[i].ext_cap)
 959                         val |= ARIZONA_MICB1_EXT_CAP;
 960
 961                 if (arizona->pdata.micbias[i].discharge)
 962                         val |= ARIZONA_MICB1_DISCH;
 963
 964                 if (arizona->pdata.micbias[i].soft_start)
 965                         val |= ARIZONA_MICB1_RATE;
 966
 967                 if (arizona->pdata.micbias[i].bypass)
 968                         val |= ARIZONA_MICB1_BYPASS;
 969
 970                 regmap_update_bits(arizona->regmap,
 971                                    ARIZONA_MIC_BIAS_CTRL_1 + i,
 972                                    ARIZONA_MICB1_LVL_MASK |
 973                                    ARIZONA_MICB1_EXT_CAP |
 974                                    ARIZONA_MICB1_DISCH |
 975                                    ARIZONA_MICB1_BYPASS |
 976                                    ARIZONA_MICB1_RATE, val);
 977         }
 978
 979         for (i = 0; i < ARIZONA_MAX_INPUT; i++) {
 980                 /* Default for both is 0 so noop with defaults */
 981                 val = arizona->pdata.dmic_ref[i]
 982                         << ARIZONA_IN1_DMIC_SUP_SHIFT;
 983                 val |= arizona->pdata.inmode[i] << ARIZONA_IN1_MODE_SHIFT;
 984
 985                 regmap_update_bits(arizona->regmap,
 986                                    ARIZONA_IN1L_CONTROL + (i * 8),
 987                                    ARIZONA_IN1_DMIC_SUP_MASK |
 988                                    ARIZONA_IN1_MODE_MASK, val);
 989         }
 990
 991         for (i = 0; i < ARIZONA_MAX_OUTPUT; i++) {
 992                 /* Default is 0 so noop with defaults */
 993                 if (arizona->pdata.out_mono[i])
 994                         val = ARIZONA_OUT1_MONO;
 995                 else
 996                         val = 0;
 997
 998                 regmap_update_bits(arizona->regmap,
 999                                    ARIZONA_OUTPUT_PATH_CONFIG_1L + (i * 8),
1000                                    ARIZONA_OUT1_MONO, val);
1001         }
1002
1003         for (i = 0; i < ARIZONA_MAX_PDM_SPK; i++) {
1004                 if (arizona->pdata.spk_mute[i])
1005                         regmap_update_bits(arizona->regmap,
1006                                            ARIZONA_PDM_SPK1_CTRL_1 + (i * 2),
1007                                            ARIZONA_SPK1_MUTE_ENDIAN_MASK |
1008                                            ARIZONA_SPK1_MUTE_SEQ1_MASK,
1009                                            arizona->pdata.spk_mute[i]);
1010
1011                 if (arizona->pdata.spk_fmt[i])
1012                         regmap_update_bits(arizona->regmap,
1013                                            ARIZONA_PDM_SPK1_CTRL_2 + (i * 2),
1014                                            ARIZONA_SPK1_FMT_MASK,
1015                                            arizona->pdata.spk_fmt[i]);
1016         }
1017
1018         /* Set up for interrupts */
1019         ret = arizona_irq_init(arizona);
1020         if (ret != 0)
1021                 goto err_reset;
1022
1023         arizona_request_irq(arizona, ARIZONA_IRQ_CLKGEN_ERR, "CLKGEN error",
1024                             arizona_clkgen_err, arizona);
1025         arizona_request_irq(arizona, ARIZONA_IRQ_OVERCLOCKED, "Overclocked",
1026                             arizona_overclocked, arizona);
1027         arizona_request_irq(arizona, ARIZONA_IRQ_UNDERCLOCKED, "Underclocked",
1028                             arizona_underclocked, arizona);
1029
1030         switch (arizona->type) {
1031         case WM5102:
1032                 ret = mfd_add_devices(arizona->dev, -1, wm5102_devs,
1033                                       ARRAY_SIZE(wm5102_devs), NULL, 0, NULL);
1034                 break;
1035         case WM5110:
1036         case WM8280:
1037                 ret = mfd_add_devices(arizona->dev, -1, wm5110_devs,
1038                                       ARRAY_SIZE(wm5110_devs), NULL, 0, NULL);
1039                 break;
1040         case WM8997:
1041                 ret = mfd_add_devices(arizona->dev, -1, wm8997_devs,
1042                                       ARRAY_SIZE(wm8997_devs), NULL, 0, NULL);
1043                 break;
1044         }
1045
1046         if (ret != 0) {
1047                 dev_err(arizona->dev, "Failed to add subdevices: %d\n", ret);
1048                 goto err_irq;
1049         }
1050
1051 #ifdef CONFIG_PM
1052         regulator_disable(arizona->dcvdd);
1053 #endif
1054
1055         return 0;
1056
1057 err_irq:
1058         arizona_irq_exit(arizona);
1059 err_reset:
1060         arizona_enable_reset(arizona);
1061         regulator_disable(arizona->dcvdd);
1062 err_enable:
1063         regulator_bulk_disable(arizona->num_core_supplies,
1064                                arizona->core_supplies);
1065 err_dcvdd:
1066         regulator_put(arizona->dcvdd);
1067 err_early:
1068         mfd_remove_devices(dev);
1069         return ret;
1070 }
1071 EXPORT_SYMBOL_GPL(arizona_dev_init);
1072
1073 int arizona_dev_exit(struct arizona *arizona)
1074 {
1075         pm_runtime_disable(arizona->dev);
1076
1077         regulator_disable(arizona->dcvdd);
1078         regulator_put(arizona->dcvdd);
1079
1080         mfd_remove_devices(arizona->dev);
1081         arizona_free_irq(arizona, ARIZONA_IRQ_UNDERCLOCKED, arizona);
1082         arizona_free_irq(arizona, ARIZONA_IRQ_OVERCLOCKED, arizona);
1083         arizona_free_irq(arizona, ARIZONA_IRQ_CLKGEN_ERR, arizona);
1084         arizona_irq_exit(arizona);
1085         arizona_enable_reset(arizona);
1086
1087         regulator_bulk_disable(arizona->num_core_supplies,
1088                                arizona->core_supplies);
1089         return 0;
1090 }
1091 EXPORT_SYMBOL_GPL(arizona_dev_exit);