drivers/mfd/arizona-core.c

   1 /*
   2  * Arizona core driver
   3  *
   4  * Copyright 2012 Wolfson Microelectronics plc
   5  *
   6  * Author: Mark Brown <broonie@opensource.wolfsonmicro.com>
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License version 2 as
  10  * published by the Free Software Foundation.
  11  */
  12
  13 #include <linux/delay.h>
  14 #include <linux/err.h>
  15 #include <linux/gpio.h>
  16 #include <linux/interrupt.h>
  17 #include <linux/mfd/core.h>
  18 #include <linux/module.h>
  19 #include <linux/of.h>
  20 #include <linux/of_device.h>
  21 #include <linux/of_gpio.h>
  22 #include <linux/pm_runtime.h>
  23 #include <linux/regmap.h>
  24 #include <linux/regulator/consumer.h>
  25 #include <linux/regulator/machine.h>
  26 #include <linux/slab.h>
  27
  28 #include <linux/mfd/arizona/core.h>
  29 #include <linux/mfd/arizona/registers.h>
  30
  31 #include "arizona.h"
  32
  33 static const char *wm5102_core_supplies[] = {
  34         "AVDD",
  35         "DBVDD1",
  36 };
  37
  38 int arizona_clk32k_enable(struct arizona *arizona)
  39 {
  40         int ret = 0;
  41
  42         mutex_lock(&arizona->clk_lock);
  43
  44         arizona->clk32k_ref++;
  45
  46         if (arizona->clk32k_ref == 1) {
  47                 switch (arizona->pdata.clk32k_src) {
  48                 case ARIZONA_32KZ_MCLK1:
  49                         ret = pm_runtime_get_sync(arizona->dev);
  50                         if (ret != 0)
  51                                 goto out;
  52                         break;
  53                 }
  54
  55                 ret = regmap_update_bits(arizona->regmap, ARIZONA_CLOCK_32K_1,
  56                                          ARIZONA_CLK_32K_ENA,
  57                                          ARIZONA_CLK_32K_ENA);
  58         }
  59
  60 out:
  61         if (ret != 0)
  62                 arizona->clk32k_ref--;
  63
  64         mutex_unlock(&arizona->clk_lock);
  65
  66         return ret;
  67 }
  68 EXPORT_SYMBOL_GPL(arizona_clk32k_enable);
  69
  70 int arizona_clk32k_disable(struct arizona *arizona)
  71 {
  72         int ret = 0;
  73
  74         mutex_lock(&arizona->clk_lock);
  75
  76         BUG_ON(arizona->clk32k_ref <= 0);
  77
  78         arizona->clk32k_ref--;
  79
  80         if (arizona->clk32k_ref == 0) {
  81                 regmap_update_bits(arizona->regmap, ARIZONA_CLOCK_32K_1,
  82                                    ARIZONA_CLK_32K_ENA, 0);
  83
  84                 switch (arizona->pdata.clk32k_src) {
  85                 case ARIZONA_32KZ_MCLK1:
  86                         pm_runtime_put_sync(arizona->dev);
  87                         break;
  88                 }
  89         }
  90
  91         mutex_unlock(&arizona->clk_lock);
  92
  93         return ret;
  94 }
  95 EXPORT_SYMBOL_GPL(arizona_clk32k_disable);
  96
  97 static irqreturn_t arizona_clkgen_err(int irq, void *data)
  98 {
  99         struct arizona *arizona = data;
 100
 101         dev_err(arizona->dev, "CLKGEN error\n");
 102
 103         return IRQ_HANDLED;
 104 }
 105
 106 static irqreturn_t arizona_underclocked(int irq, void *data)
 107 {
 108         struct arizona *arizona = data;
 109         unsigned int val;
 110         int ret;
 111
 112         ret = regmap_read(arizona->regmap, ARIZONA_INTERRUPT_RAW_STATUS_8,
 113                           &val);
 114         if (ret != 0) {
 115                 dev_err(arizona->dev, "Failed to read underclock status: %d\n",
 116                         ret);
 117                 return IRQ_NONE;
 118         }
 119
 120         if (val & ARIZONA_AIF3_UNDERCLOCKED_STS)
 121                 dev_err(arizona->dev, "AIF3 underclocked\n");
 122         if (val & ARIZONA_AIF2_UNDERCLOCKED_STS)
 123                 dev_err(arizona->dev, "AIF2 underclocked\n");
 124         if (val & ARIZONA_AIF1_UNDERCLOCKED_STS)
 125                 dev_err(arizona->dev, "AIF1 underclocked\n");
 126         if (val & ARIZONA_ISRC2_UNDERCLOCKED_STS)
 127                 dev_err(arizona->dev, "ISRC2 underclocked\n");
 128         if (val & ARIZONA_ISRC1_UNDERCLOCKED_STS)
 129                 dev_err(arizona->dev, "ISRC1 underclocked\n");
 130         if (val & ARIZONA_FX_UNDERCLOCKED_STS)
 131                 dev_err(arizona->dev, "FX underclocked\n");
 132         if (val & ARIZONA_ASRC_UNDERCLOCKED_STS)
 133                 dev_err(arizona->dev, "ASRC underclocked\n");
 134         if (val & ARIZONA_DAC_UNDERCLOCKED_STS)
 135                 dev_err(arizona->dev, "DAC underclocked\n");
 136         if (val & ARIZONA_ADC_UNDERCLOCKED_STS)
 137                 dev_err(arizona->dev, "ADC underclocked\n");
 138         if (val & ARIZONA_MIXER_UNDERCLOCKED_STS)
 139                 dev_err(arizona->dev, "Mixer dropped sample\n");
 140
 141         return IRQ_HANDLED;
 142 }
 143
 144 static irqreturn_t arizona_overclocked(int irq, void *data)
 145 {
 146         struct arizona *arizona = data;
 147         unsigned int val[2];
 148         int ret;
 149
 150         ret = regmap_bulk_read(arizona->regmap, ARIZONA_INTERRUPT_RAW_STATUS_6,
 151                                &val[0], 2);
 152         if (ret != 0) {
 153                 dev_err(arizona->dev, "Failed to read overclock status: %d\n",
 154                         ret);
 155                 return IRQ_NONE;
 156         }
 157
 158         if (val[0] & ARIZONA_PWM_OVERCLOCKED_STS)
 159                 dev_err(arizona->dev, "PWM overclocked\n");
 160         if (val[0] & ARIZONA_FX_CORE_OVERCLOCKED_STS)
 161                 dev_err(arizona->dev, "FX core overclocked\n");
 162         if (val[0] & ARIZONA_DAC_SYS_OVERCLOCKED_STS)
 163                 dev_err(arizona->dev, "DAC SYS overclocked\n");
 164         if (val[0] & ARIZONA_DAC_WARP_OVERCLOCKED_STS)
 165                 dev_err(arizona->dev, "DAC WARP overclocked\n");
 166         if (val[0] & ARIZONA_ADC_OVERCLOCKED_STS)
 167                 dev_err(arizona->dev, "ADC overclocked\n");
 168         if (val[0] & ARIZONA_MIXER_OVERCLOCKED_STS)
 169                 dev_err(arizona->dev, "Mixer overclocked\n");
 170         if (val[0] & ARIZONA_AIF3_SYNC_OVERCLOCKED_STS)
 171                 dev_err(arizona->dev, "AIF3 overclocked\n");
 172         if (val[0] & ARIZONA_AIF2_SYNC_OVERCLOCKED_STS)
 173                 dev_err(arizona->dev, "AIF2 overclocked\n");
 174         if (val[0] & ARIZONA_AIF1_SYNC_OVERCLOCKED_STS)
 175                 dev_err(arizona->dev, "AIF1 overclocked\n");
 176         if (val[0] & ARIZONA_PAD_CTRL_OVERCLOCKED_STS)
 177                 dev_err(arizona->dev, "Pad control overclocked\n");
 178
 179         if (val[1] & ARIZONA_SLIMBUS_SUBSYS_OVERCLOCKED_STS)
 180                 dev_err(arizona->dev, "Slimbus subsystem overclocked\n");
 181         if (val[1] & ARIZONA_SLIMBUS_ASYNC_OVERCLOCKED_STS)
 182                 dev_err(arizona->dev, "Slimbus async overclocked\n");
 183         if (val[1] & ARIZONA_SLIMBUS_SYNC_OVERCLOCKED_STS)
 184                 dev_err(arizona->dev, "Slimbus sync overclocked\n");
 185         if (val[1] & ARIZONA_ASRC_ASYNC_SYS_OVERCLOCKED_STS)
 186                 dev_err(arizona->dev, "ASRC async system overclocked\n");
 187         if (val[1] & ARIZONA_ASRC_ASYNC_WARP_OVERCLOCKED_STS)
 188                 dev_err(arizona->dev, "ASRC async WARP overclocked\n");
 189         if (val[1] & ARIZONA_ASRC_SYNC_SYS_OVERCLOCKED_STS)
 190                 dev_err(arizona->dev, "ASRC sync system overclocked\n");
 191         if (val[1] & ARIZONA_ASRC_SYNC_WARP_OVERCLOCKED_STS)
 192                 dev_err(arizona->dev, "ASRC sync WARP overclocked\n");
 193         if (val[1] & ARIZONA_ADSP2_1_OVERCLOCKED_STS)
 194                 dev_err(arizona->dev, "DSP1 overclocked\n");
 195         if (val[1] & ARIZONA_ISRC2_OVERCLOCKED_STS)
 196                 dev_err(arizona->dev, "ISRC2 overclocked\n");
 197         if (val[1] & ARIZONA_ISRC1_OVERCLOCKED_STS)
 198                 dev_err(arizona->dev, "ISRC1 overclocked\n");
 199
 200         return IRQ_HANDLED;
 201 }
 202
 203 static int arizona_poll_reg(struct arizona *arizona,
 204                             int timeout, unsigned int reg,
 205                             unsigned int mask, unsigned int target)
 206 {
 207         unsigned int val = 0;
 208         int ret, i;
 209
 210         for (i = 0; i < timeout; i++) {
 211                 ret = regmap_read(arizona->regmap, reg, &val);
 212                 if (ret != 0) {
 213                         dev_err(arizona->dev, "Failed to read reg %u: %d\n",
 214                                 reg, ret);
 215                         continue;
 216                 }
 217
 218                 if ((val & mask) == target)
 219                         return 0;
 220
 221                 msleep(1);
 222         }
 223
 224         dev_err(arizona->dev, "Polling reg %u timed out: %x\n", reg, val);
 225         return -ETIMEDOUT;
 226 }
 227
 228 static int arizona_wait_for_boot(struct arizona *arizona)
 229 {
 230         int ret;
 231
 232         /*
 233          * We can't use an interrupt as we need to runtime resume to do so,
 234          * we won't race with the interrupt handler as it'll be blocked on
 235          * runtime resume.
 236          */
 237         ret = arizona_poll_reg(arizona, 5, ARIZONA_INTERRUPT_RAW_STATUS_5,
 238                                ARIZONA_BOOT_DONE_STS, ARIZONA_BOOT_DONE_STS);
 239
 240         if (!ret)
 241                 regmap_write(arizona->regmap, ARIZONA_INTERRUPT_STATUS_5,
 242                              ARIZONA_BOOT_DONE_STS);
 243
 244         pm_runtime_mark_last_busy(arizona->dev);
 245
 246         return ret;
 247 }
 248
 249 static int arizona_apply_hardware_patch(struct arizona* arizona)
 250 {
 251         unsigned int fll, sysclk;
 252         int ret, err;
 253
 254         regcache_cache_bypass(arizona->regmap, true);
 255
 256         /* Cache existing FLL and SYSCLK settings */
 257         ret = regmap_read(arizona->regmap, ARIZONA_FLL1_CONTROL_1, &fll);
 258         if (ret != 0) {
 259                 dev_err(arizona->dev, "Failed to cache FLL settings: %d\n",
 260                         ret);
 261                 return ret;
 262         }
 263         ret = regmap_read(arizona->regmap, ARIZONA_SYSTEM_CLOCK_1, &sysclk);
 264         if (ret != 0) {
 265                 dev_err(arizona->dev, "Failed to cache SYSCLK settings: %d\n",
 266                         ret);
 267                 return ret;
 268         }
 269
 270         /* Start up SYSCLK using the FLL in free running mode */
 271         ret = regmap_write(arizona->regmap, ARIZONA_FLL1_CONTROL_1,
 272                         ARIZONA_FLL1_ENA | ARIZONA_FLL1_FREERUN);
 273         if (ret != 0) {
 274                 dev_err(arizona->dev,
 275                         "Failed to start FLL in freerunning mode: %d\n",
 276                         ret);
 277                 return ret;
 278         }
 279         ret = arizona_poll_reg(arizona, 25, ARIZONA_INTERRUPT_RAW_STATUS_5,
 280                                ARIZONA_FLL1_CLOCK_OK_STS,
 281                                ARIZONA_FLL1_CLOCK_OK_STS);
 282         if (ret != 0) {
 283                 ret = -ETIMEDOUT;
 284                 goto err_fll;
 285         }
 286
 287         ret = regmap_write(arizona->regmap, ARIZONA_SYSTEM_CLOCK_1, 0x0144);
 288         if (ret != 0) {
 289                 dev_err(arizona->dev, "Failed to start SYSCLK: %d\n", ret);
 290                 goto err_fll;
 291         }
 292
 293         /* Start the write sequencer and wait for it to finish */
 294         ret = regmap_write(arizona->regmap, ARIZONA_WRITE_SEQUENCER_CTRL_0,
 295                         ARIZONA_WSEQ_ENA | ARIZONA_WSEQ_START | 160);
 296         if (ret != 0) {
 297                 dev_err(arizona->dev, "Failed to start write sequencer: %d\n",
 298                         ret);
 299                 goto err_sysclk;
 300         }
 301         ret = arizona_poll_reg(arizona, 5, ARIZONA_WRITE_SEQUENCER_CTRL_1,
 302                                ARIZONA_WSEQ_BUSY, 0);
 303         if (ret != 0) {
 304                 regmap_write(arizona->regmap, ARIZONA_WRITE_SEQUENCER_CTRL_0,
 305                                 ARIZONA_WSEQ_ABORT);
 306                 ret = -ETIMEDOUT;
 307         }
 308
 309 err_sysclk:
 310         err = regmap_write(arizona->regmap, ARIZONA_SYSTEM_CLOCK_1, sysclk);
 311         if (err != 0) {
 312                 dev_err(arizona->dev,
 313                         "Failed to re-apply old SYSCLK settings: %d\n",
 314                         err);
 315         }
 316
 317 err_fll:
 318         err = regmap_write(arizona->regmap, ARIZONA_FLL1_CONTROL_1, fll);
 319         if (err != 0) {
 320                 dev_err(arizona->dev,
 321                         "Failed to re-apply old FLL settings: %d\n",
 322                         err);
 323         }
 324
 325         regcache_cache_bypass(arizona->regmap, false);
 326
 327         if (ret != 0)
 328                 return ret;
 329         else
 330                 return err;
 331 }
 332
 333 #ifdef CONFIG_PM_RUNTIME
 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         switch (arizona->type) {
 397         case WM5102:
 398                 ret = wm5102_patch(arizona);
 399                 if (ret != 0) {
 400                         dev_err(arizona->dev, "Failed to apply patch: %d\n",
 401                                 ret);
 402                         goto err;
 403                 }
 404         default:
 405                 break;
 406         }
 407
 408         ret = regcache_sync(arizona->regmap);
 409         if (ret != 0) {
 410                 dev_err(arizona->dev, "Failed to restore register cache\n");
 411                 goto err;
 412         }
 413
 414         return 0;
 415
 416 err:
 417         regcache_cache_only(arizona->regmap, true);
 418         regulator_disable(arizona->dcvdd);
 419         return ret;
 420 }
 421
 422 static int arizona_runtime_suspend(struct device *dev)
 423 {
 424         struct arizona *arizona = dev_get_drvdata(dev);
 425         int ret;
 426
 427         dev_dbg(arizona->dev, "Entering AoD mode\n");
 428
 429         if (arizona->external_dcvdd) {
 430                 ret = regmap_update_bits(arizona->regmap,
 431                                          ARIZONA_ISOLATION_CONTROL,
 432                                          ARIZONA_ISOLATE_DCVDD1,
 433                                          ARIZONA_ISOLATE_DCVDD1);
 434                 if (ret != 0) {
 435                         dev_err(arizona->dev, "Failed to isolate DCVDD: %d\n",
 436                                 ret);
 437                         return ret;
 438                 }
 439         }
 440
 441         regcache_cache_only(arizona->regmap, true);
 442         regcache_mark_dirty(arizona->regmap);
 443         regulator_disable(arizona->dcvdd);
 444
 445         return 0;
 446 }
 447 #endif
 448
 449 #ifdef CONFIG_PM_SLEEP
 450 static int arizona_suspend(struct device *dev)
 451 {
 452         struct arizona *arizona = dev_get_drvdata(dev);
 453
 454         dev_dbg(arizona->dev, "Suspend, disabling IRQ\n");
 455         disable_irq(arizona->irq);
 456
 457         return 0;
 458 }
 459
 460 static int arizona_suspend_late(struct device *dev)
 461 {
 462         struct arizona *arizona = dev_get_drvdata(dev);
 463
 464         dev_dbg(arizona->dev, "Late suspend, reenabling IRQ\n");
 465         enable_irq(arizona->irq);
 466
 467         return 0;
 468 }
 469
 470 static int arizona_resume_noirq(struct device *dev)
 471 {
 472         struct arizona *arizona = dev_get_drvdata(dev);
 473
 474         dev_dbg(arizona->dev, "Early resume, disabling IRQ\n");
 475         disable_irq(arizona->irq);
 476
 477         return 0;
 478 }
 479
 480 static int arizona_resume(struct device *dev)
 481 {
 482         struct arizona *arizona = dev_get_drvdata(dev);
 483
 484         dev_dbg(arizona->dev, "Late resume, reenabling IRQ\n");
 485         enable_irq(arizona->irq);
 486
 487         return 0;
 488 }
 489 #endif
 490
 491 const struct dev_pm_ops arizona_pm_ops = {
 492         SET_RUNTIME_PM_OPS(arizona_runtime_suspend,
 493                            arizona_runtime_resume,
 494                            NULL)
 495         SET_SYSTEM_SLEEP_PM_OPS(arizona_suspend, arizona_resume)
 496 #ifdef CONFIG_PM_SLEEP
 497         .suspend_late = arizona_suspend_late,
 498         .resume_noirq = arizona_resume_noirq,
 499 #endif
 500 };
 501 EXPORT_SYMBOL_GPL(arizona_pm_ops);
 502
 503 #ifdef CONFIG_OF
 504 int arizona_of_get_type(struct device *dev)
 505 {
 506         const struct of_device_id *id = of_match_device(arizona_of_match, dev);
 507
 508         if (id)
 509                 return (int)id->data;
 510         else
 511                 return 0;
 512 }
 513 EXPORT_SYMBOL_GPL(arizona_of_get_type);
 514
 515 static int arizona_of_get_core_pdata(struct arizona *arizona)
 516 {
 517         int ret, i;
 518
 519         arizona->pdata.reset = of_get_named_gpio(arizona->dev->of_node,
 520                                                  "wlf,reset", 0);
 521         if (arizona->pdata.reset < 0)
 522                 arizona->pdata.reset = 0;
 523
 524         arizona->pdata.ldoena = of_get_named_gpio(arizona->dev->of_node,
 525                                                   "wlf,ldoena", 0);
 526         if (arizona->pdata.ldoena < 0)
 527                 arizona->pdata.ldoena = 0;
 528
 529         ret = of_property_read_u32_array(arizona->dev->of_node,
 530                                          "wlf,gpio-defaults",
 531                                          arizona->pdata.gpio_defaults,
 532                                          ARRAY_SIZE(arizona->pdata.gpio_defaults));
 533         if (ret >= 0) {
 534                 /*
 535                  * All values are literal except out of range values
 536                  * which are chip default, translate into platform
 537                  * data which uses 0 as chip default and out of range
 538                  * as zero.
 539                  */
 540                 for (i = 0; i < ARRAY_SIZE(arizona->pdata.gpio_defaults); i++) {
 541                         if (arizona->pdata.gpio_defaults[i] > 0xffff)
 542                                 arizona->pdata.gpio_defaults[i] = 0;
 543                         else if (arizona->pdata.gpio_defaults[i] == 0)
 544                                 arizona->pdata.gpio_defaults[i] = 0x10000;
 545                 }
 546         } else {
 547                 dev_err(arizona->dev, "Failed to parse GPIO defaults: %d\n",
 548                         ret);
 549         }
 550
 551         return 0;
 552 }
 553
 554 const struct of_device_id arizona_of_match[] = {
 555         { .compatible = "wlf,wm5102", .data = (void *)WM5102 },
 556         { .compatible = "wlf,wm5110", .data = (void *)WM5110 },
 557         { .compatible = "wlf,wm8997", .data = (void *)WM8997 },
 558         {},
 559 };
 560 EXPORT_SYMBOL_GPL(arizona_of_match);
 561 #else
 562 static inline int arizona_of_get_core_pdata(struct arizona *arizona)
 563 {
 564         return 0;
 565 }
 566 #endif
 567
 568 static struct mfd_cell early_devs[] = {
 569         { .name = "arizona-ldo1" },
 570 };
 571
 572 static const char *wm5102_supplies[] = {
 573         "DBVDD2",
 574         "DBVDD3",
 575         "CPVDD",
 576         "SPKVDDL",
 577         "SPKVDDR",
 578 };
 579
 580 static struct mfd_cell wm5102_devs[] = {
 581         { .name = "arizona-micsupp" },
 582         { .name = "arizona-extcon" },
 583         { .name = "arizona-gpio" },
 584         { .name = "arizona-haptics" },
 585         { .name = "arizona-pwm" },
 586         {
 587                 .name = "wm5102-codec",
 588                 .parent_supplies = wm5102_supplies,
 589                 .num_parent_supplies = ARRAY_SIZE(wm5102_supplies),
 590         },
 591 };
 592
 593 static struct mfd_cell wm5110_devs[] = {
 594         { .name = "arizona-micsupp" },
 595         { .name = "arizona-extcon" },
 596         { .name = "arizona-gpio" },
 597         { .name = "arizona-haptics" },
 598         { .name = "arizona-pwm" },
 599         {
 600                 .name = "wm5110-codec",
 601                 .parent_supplies = wm5102_supplies,
 602                 .num_parent_supplies = ARRAY_SIZE(wm5102_supplies),
 603         },
 604 };
 605
 606 static const char *wm8997_supplies[] = {
 607         "DBVDD2",
 608         "CPVDD",
 609         "SPKVDD",
 610 };
 611
 612 static struct mfd_cell wm8997_devs[] = {
 613         { .name = "arizona-micsupp" },
 614         { .name = "arizona-extcon" },
 615         { .name = "arizona-gpio" },
 616         { .name = "arizona-haptics" },
 617         { .name = "arizona-pwm" },
 618         {
 619                 .name = "wm8997-codec",
 620                 .parent_supplies = wm8997_supplies,
 621                 .num_parent_supplies = ARRAY_SIZE(wm8997_supplies),
 622         },
 623 };
 624
 625 int arizona_dev_init(struct arizona *arizona)
 626 {
 627         struct device *dev = arizona->dev;
 628         const char *type_name;
 629         unsigned int reg, val;
 630         int (*apply_patch)(struct arizona *) = NULL;
 631         int ret, i;
 632
 633         dev_set_drvdata(arizona->dev, arizona);
 634         mutex_init(&arizona->clk_lock);
 635
 636         if (dev_get_platdata(arizona->dev))
 637                 memcpy(&arizona->pdata, dev_get_platdata(arizona->dev),
 638                        sizeof(arizona->pdata));
 639         else
 640                 arizona_of_get_core_pdata(arizona);
 641
 642         regcache_cache_only(arizona->regmap, true);
 643
 644         switch (arizona->type) {
 645         case WM5102:
 646         case WM5110:
 647         case WM8997:
 648                 for (i = 0; i < ARRAY_SIZE(wm5102_core_supplies); i++)
 649                         arizona->core_supplies[i].supply
 650                                 = wm5102_core_supplies[i];
 651                 arizona->num_core_supplies = ARRAY_SIZE(wm5102_core_supplies);
 652                 break;
 653         default:
 654                 dev_err(arizona->dev, "Unknown device type %d\n",
 655                         arizona->type);
 656                 return -EINVAL;
 657         }
 658
 659         ret = mfd_add_devices(arizona->dev, -1, early_devs,
 660                               ARRAY_SIZE(early_devs), NULL, 0, NULL);
 661         if (ret != 0) {
 662                 dev_err(dev, "Failed to add early children: %d\n", ret);
 663                 return ret;
 664         }
 665
 666         ret = devm_regulator_bulk_get(dev, arizona->num_core_supplies,
 667                                       arizona->core_supplies);
 668         if (ret != 0) {
 669                 dev_err(dev, "Failed to request core supplies: %d\n",
 670                         ret);
 671                 goto err_early;
 672         }
 673
 674         arizona->dcvdd = devm_regulator_get(arizona->dev, "DCVDD");
 675         if (IS_ERR(arizona->dcvdd)) {
 676                 ret = PTR_ERR(arizona->dcvdd);
 677                 dev_err(dev, "Failed to request DCVDD: %d\n", ret);
 678                 goto err_early;
 679         }
 680
 681         if (arizona->pdata.reset) {
 682                 /* Start out with /RESET low to put the chip into reset */
 683                 ret = gpio_request_one(arizona->pdata.reset,
 684                                        GPIOF_DIR_OUT | GPIOF_INIT_LOW,
 685                                        "arizona /RESET");
 686                 if (ret != 0) {
 687                         dev_err(dev, "Failed to request /RESET: %d\n", ret);
 688                         goto err_early;
 689                 }
 690         }
 691
 692         ret = regulator_bulk_enable(arizona->num_core_supplies,
 693                                     arizona->core_supplies);
 694         if (ret != 0) {
 695                 dev_err(dev, "Failed to enable core supplies: %d\n",
 696                         ret);
 697                 goto err_early;
 698         }
 699
 700         ret = regulator_enable(arizona->dcvdd);
 701         if (ret != 0) {
 702                 dev_err(dev, "Failed to enable DCVDD: %d\n", ret);
 703                 goto err_enable;
 704         }
 705
 706         if (arizona->pdata.reset) {
 707                 gpio_set_value_cansleep(arizona->pdata.reset, 1);
 708                 msleep(1);
 709         }
 710
 711         regcache_cache_only(arizona->regmap, false);
 712
 713         /* Verify that this is a chip we know about */
 714         ret = regmap_read(arizona->regmap, ARIZONA_SOFTWARE_RESET, &reg);
 715         if (ret != 0) {
 716                 dev_err(dev, "Failed to read ID register: %d\n", ret);
 717                 goto err_reset;
 718         }
 719
 720         switch (reg) {
 721         case 0x5102:
 722         case 0x5110:
 723         case 0x8997:
 724                 break;
 725         default:
 726                 dev_err(arizona->dev, "Unknown device ID: %x\n", reg);
 727                 goto err_reset;
 728         }
 729
 730         /* If we have a /RESET GPIO we'll already be reset */
 731         if (!arizona->pdata.reset) {
 732                 regcache_mark_dirty(arizona->regmap);
 733
 734                 ret = regmap_write(arizona->regmap, ARIZONA_SOFTWARE_RESET, 0);
 735                 if (ret != 0) {
 736                         dev_err(dev, "Failed to reset device: %d\n", ret);
 737                         goto err_reset;
 738                 }
 739
 740                 msleep(1);
 741
 742                 ret = regcache_sync(arizona->regmap);
 743                 if (ret != 0) {
 744                         dev_err(dev, "Failed to sync device: %d\n", ret);
 745                         goto err_reset;
 746                 }
 747         }
 748
 749         /* Ensure device startup is complete */
 750         switch (arizona->type) {
 751         case WM5102:
 752                 ret = regmap_read(arizona->regmap, 0x19, &val);
 753                 if (ret != 0)
 754                         dev_err(dev,
 755                                 "Failed to check write sequencer state: %d\n",
 756                                 ret);
 757                 else if (val & 0x01)
 758                         break;
 759                 /* Fall through */
 760         default:
 761                 ret = arizona_wait_for_boot(arizona);
 762                 if (ret != 0) {
 763                         dev_err(arizona->dev,
 764                                 "Device failed initial boot: %d\n", ret);
 765                         goto err_reset;
 766                 }
 767                 break;
 768         }
 769
 770         /* Read the device ID information & do device specific stuff */
 771         ret = regmap_read(arizona->regmap, ARIZONA_SOFTWARE_RESET, &reg);
 772         if (ret != 0) {
 773                 dev_err(dev, "Failed to read ID register: %d\n", ret);
 774                 goto err_reset;
 775         }
 776
 777         ret = regmap_read(arizona->regmap, ARIZONA_DEVICE_REVISION,
 778                           &arizona->rev);
 779         if (ret != 0) {
 780                 dev_err(dev, "Failed to read revision register: %d\n", ret);
 781                 goto err_reset;
 782         }
 783         arizona->rev &= ARIZONA_DEVICE_REVISION_MASK;
 784
 785         switch (reg) {
 786 #ifdef CONFIG_MFD_WM5102
 787         case 0x5102:
 788                 type_name = "WM5102";
 789                 if (arizona->type != WM5102) {
 790                         dev_err(arizona->dev, "WM5102 registered as %d\n",
 791                                 arizona->type);
 792                         arizona->type = WM5102;
 793                 }
 794                 apply_patch = wm5102_patch;
 795                 arizona->rev &= 0x7;
 796                 break;
 797 #endif
 798 #ifdef CONFIG_MFD_WM5110
 799         case 0x5110:
 800                 type_name = "WM5110";
 801                 if (arizona->type != WM5110) {
 802                         dev_err(arizona->dev, "WM5110 registered as %d\n",
 803                                 arizona->type);
 804                         arizona->type = WM5110;
 805                 }
 806                 apply_patch = wm5110_patch;
 807                 break;
 808 #endif
 809 #ifdef CONFIG_MFD_WM8997
 810         case 0x8997:
 811                 type_name = "WM8997";
 812                 if (arizona->type != WM8997) {
 813                         dev_err(arizona->dev, "WM8997 registered as %d\n",
 814                                 arizona->type);
 815                         arizona->type = WM8997;
 816                 }
 817                 apply_patch = wm8997_patch;
 818                 break;
 819 #endif
 820         default:
 821                 dev_err(arizona->dev, "Unknown device ID %x\n", reg);
 822                 goto err_reset;
 823         }
 824
 825         dev_info(dev, "%s revision %c\n", type_name, arizona->rev + 'A');
 826
 827         if (apply_patch) {
 828                 ret = apply_patch(arizona);
 829                 if (ret != 0) {
 830                         dev_err(arizona->dev, "Failed to apply patch: %d\n",
 831                                 ret);
 832                         goto err_reset;
 833                 }
 834
 835                 switch (arizona->type) {
 836                 case WM5102:
 837                         ret = arizona_apply_hardware_patch(arizona);
 838                         if (ret != 0) {
 839                                 dev_err(arizona->dev,
 840                                         "Failed to apply hardware patch: %d\n",
 841                                         ret);
 842                                 goto err_reset;
 843                         }
 844                         break;
 845                 default:
 846                         break;
 847                 }
 848         }
 849
 850         for (i = 0; i < ARRAY_SIZE(arizona->pdata.gpio_defaults); i++) {
 851                 if (!arizona->pdata.gpio_defaults[i])
 852                         continue;
 853
 854                 regmap_write(arizona->regmap, ARIZONA_GPIO1_CTRL + i,
 855                              arizona->pdata.gpio_defaults[i]);
 856         }
 857
 858         /*
 859          * LDO1 can only be used to supply DCVDD so if it has no
 860          * consumers then DCVDD is supplied externally.
 861          */
 862         if (arizona->pdata.ldo1 &&
 863             arizona->pdata.ldo1->num_consumer_supplies == 0)
 864                 arizona->external_dcvdd = true;
 865
 866         pm_runtime_set_autosuspend_delay(arizona->dev, 100);
 867         pm_runtime_use_autosuspend(arizona->dev);
 868         pm_runtime_enable(arizona->dev);
 869
 870         /* Chip default */
 871         if (!arizona->pdata.clk32k_src)
 872                 arizona->pdata.clk32k_src = ARIZONA_32KZ_MCLK2;
 873
 874         switch (arizona->pdata.clk32k_src) {
 875         case ARIZONA_32KZ_MCLK1:
 876         case ARIZONA_32KZ_MCLK2:
 877                 regmap_update_bits(arizona->regmap, ARIZONA_CLOCK_32K_1,
 878                                    ARIZONA_CLK_32K_SRC_MASK,
 879                                    arizona->pdata.clk32k_src - 1);
 880                 arizona_clk32k_enable(arizona);
 881                 break;
 882         case ARIZONA_32KZ_NONE:
 883                 regmap_update_bits(arizona->regmap, ARIZONA_CLOCK_32K_1,
 884                                    ARIZONA_CLK_32K_SRC_MASK, 2);
 885                 break;
 886         default:
 887                 dev_err(arizona->dev, "Invalid 32kHz clock source: %d\n",
 888                         arizona->pdata.clk32k_src);
 889                 ret = -EINVAL;
 890                 goto err_reset;
 891         }
 892
 893         for (i = 0; i < ARIZONA_MAX_MICBIAS; i++) {
 894                 if (!arizona->pdata.micbias[i].mV &&
 895                     !arizona->pdata.micbias[i].bypass)
 896                         continue;
 897
 898                 /* Apply default for bypass mode */
 899                 if (!arizona->pdata.micbias[i].mV)
 900                         arizona->pdata.micbias[i].mV = 2800;
 901
 902                 val = (arizona->pdata.micbias[i].mV - 1500) / 100;
 903
 904                 val <<= ARIZONA_MICB1_LVL_SHIFT;
 905
 906                 if (arizona->pdata.micbias[i].ext_cap)
 907                         val |= ARIZONA_MICB1_EXT_CAP;
 908
 909                 if (arizona->pdata.micbias[i].discharge)
 910                         val |= ARIZONA_MICB1_DISCH;
 911
 912                 if (arizona->pdata.micbias[i].soft_start)
 913                         val |= ARIZONA_MICB1_RATE;
 914
 915                 if (arizona->pdata.micbias[i].bypass)
 916                         val |= ARIZONA_MICB1_BYPASS;
 917
 918                 regmap_update_bits(arizona->regmap,
 919                                    ARIZONA_MIC_BIAS_CTRL_1 + i,
 920                                    ARIZONA_MICB1_LVL_MASK |
 921                                    ARIZONA_MICB1_DISCH |
 922                                    ARIZONA_MICB1_BYPASS |
 923                                    ARIZONA_MICB1_RATE, val);
 924         }
 925
 926         for (i = 0; i < ARIZONA_MAX_INPUT; i++) {
 927                 /* Default for both is 0 so noop with defaults */
 928                 val = arizona->pdata.dmic_ref[i]
 929                         << ARIZONA_IN1_DMIC_SUP_SHIFT;
 930                 val |= arizona->pdata.inmode[i] << ARIZONA_IN1_MODE_SHIFT;
 931
 932                 regmap_update_bits(arizona->regmap,
 933                                    ARIZONA_IN1L_CONTROL + (i * 8),
 934                                    ARIZONA_IN1_DMIC_SUP_MASK |
 935                                    ARIZONA_IN1_MODE_MASK, val);
 936         }
 937
 938         for (i = 0; i < ARIZONA_MAX_OUTPUT; i++) {
 939                 /* Default is 0 so noop with defaults */
 940                 if (arizona->pdata.out_mono[i])
 941                         val = ARIZONA_OUT1_MONO;
 942                 else
 943                         val = 0;
 944
 945                 regmap_update_bits(arizona->regmap,
 946                                    ARIZONA_OUTPUT_PATH_CONFIG_1L + (i * 8),
 947                                    ARIZONA_OUT1_MONO, val);
 948         }
 949
 950         for (i = 0; i < ARIZONA_MAX_PDM_SPK; i++) {
 951                 if (arizona->pdata.spk_mute[i])
 952                         regmap_update_bits(arizona->regmap,
 953                                            ARIZONA_PDM_SPK1_CTRL_1 + (i * 2),
 954                                            ARIZONA_SPK1_MUTE_ENDIAN_MASK |
 955                                            ARIZONA_SPK1_MUTE_SEQ1_MASK,
 956                                            arizona->pdata.spk_mute[i]);
 957
 958                 if (arizona->pdata.spk_fmt[i])
 959                         regmap_update_bits(arizona->regmap,
 960                                            ARIZONA_PDM_SPK1_CTRL_2 + (i * 2),
 961                                            ARIZONA_SPK1_FMT_MASK,
 962                                            arizona->pdata.spk_fmt[i]);
 963         }
 964
 965         /* Set up for interrupts */
 966         ret = arizona_irq_init(arizona);
 967         if (ret != 0)
 968                 goto err_reset;
 969
 970         arizona_request_irq(arizona, ARIZONA_IRQ_CLKGEN_ERR, "CLKGEN error",
 971                             arizona_clkgen_err, arizona);
 972         arizona_request_irq(arizona, ARIZONA_IRQ_OVERCLOCKED, "Overclocked",
 973                             arizona_overclocked, arizona);
 974         arizona_request_irq(arizona, ARIZONA_IRQ_UNDERCLOCKED, "Underclocked",
 975                             arizona_underclocked, arizona);
 976
 977         switch (arizona->type) {
 978         case WM5102:
 979                 ret = mfd_add_devices(arizona->dev, -1, wm5102_devs,
 980                                       ARRAY_SIZE(wm5102_devs), NULL, 0, NULL);
 981                 break;
 982         case WM5110:
 983                 ret = mfd_add_devices(arizona->dev, -1, wm5110_devs,
 984                                       ARRAY_SIZE(wm5110_devs), NULL, 0, NULL);
 985                 break;
 986         case WM8997:
 987                 ret = mfd_add_devices(arizona->dev, -1, wm8997_devs,
 988                                       ARRAY_SIZE(wm8997_devs), NULL, 0, NULL);
 989                 break;
 990         }
 991
 992         if (ret != 0) {
 993                 dev_err(arizona->dev, "Failed to add subdevices: %d\n", ret);
 994                 goto err_irq;
 995         }
 996
 997 #ifdef CONFIG_PM_RUNTIME
 998         regulator_disable(arizona->dcvdd);
 999 #endif
1000
1001         return 0;
1002
1003 err_irq:
1004         arizona_irq_exit(arizona);
1005 err_reset:
1006         if (arizona->pdata.reset) {
1007                 gpio_set_value_cansleep(arizona->pdata.reset, 0);
1008                 gpio_free(arizona->pdata.reset);
1009         }
1010         regulator_disable(arizona->dcvdd);
1011 err_enable:
1012         regulator_bulk_disable(arizona->num_core_supplies,
1013                                arizona->core_supplies);
1014 err_early:
1015         mfd_remove_devices(dev);
1016         return ret;
1017 }
1018 EXPORT_SYMBOL_GPL(arizona_dev_init);
1019
1020 int arizona_dev_exit(struct arizona *arizona)
1021 {
1022         mfd_remove_devices(arizona->dev);
1023         arizona_free_irq(arizona, ARIZONA_IRQ_UNDERCLOCKED, arizona);
1024         arizona_free_irq(arizona, ARIZONA_IRQ_OVERCLOCKED, arizona);
1025         arizona_free_irq(arizona, ARIZONA_IRQ_CLKGEN_ERR, arizona);
1026         pm_runtime_disable(arizona->dev);
1027         arizona_irq_exit(arizona);
1028         if (arizona->pdata.reset)
1029                 gpio_set_value_cansleep(arizona->pdata.reset, 0);
1030         regulator_disable(arizona->dcvdd);
1031         regulator_bulk_disable(ARRAY_SIZE(arizona->core_supplies),
1032                                arizona->core_supplies);
1033         return 0;
1034 }
1035 EXPORT_SYMBOL_GPL(arizona_dev_exit);