drivers/mfd/arizona-core.c

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