drivers/mfd/wm831x-core.c

   1 /*
   2  * wm831x-core.c  --  Device access for Wolfson WM831x PMICs
   3  *
   4  * Copyright 2009 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 it
   9  *  under  the terms of  the GNU General  Public License as published by the
  10  *  Free Software Foundation;  either version 2 of the  License, or (at your
  11  *  option) any later version.
  12  *
  13  */
  14
  15 #include <linux/kernel.h>
  16 #include <linux/module.h>
  17 #include <linux/bcd.h>
  18 #include <linux/delay.h>
  19 #include <linux/mfd/core.h>
  20 #include <linux/slab.h>
  21
  22 #include <linux/mfd/wm831x/core.h>
  23 #include <linux/mfd/wm831x/pdata.h>
  24 #include <linux/mfd/wm831x/irq.h>
  25 #include <linux/mfd/wm831x/auxadc.h>
  26 #include <linux/mfd/wm831x/otp.h>
  27 #include <linux/mfd/wm831x/regulator.h>
  28
  29 /* Current settings - values are 2*2^(reg_val/4) microamps.  These are
  30  * exported since they are used by multiple drivers.
  31  */
  32 int wm831x_isinkv_values[WM831X_ISINK_MAX_ISEL + 1] = {
  33         2,
  34         2,
  35         3,
  36         3,
  37         4,
  38         5,
  39         6,
  40         7,
  41         8,
  42         10,
  43         11,
  44         13,
  45         16,
  46         19,
  47         23,
  48         27,
  49         32,
  50         38,
  51         45,
  52         54,
  53         64,
  54         76,
  55         91,
  56         108,
  57         128,
  58         152,
  59         181,
  60         215,
  61         256,
  62         304,
  63         362,
  64         431,
  65         512,
  66         609,
  67         724,
  68         861,
  69         1024,
  70         1218,
  71         1448,
  72         1722,
  73         2048,
  74         2435,
  75         2896,
  76         3444,
  77         4096,
  78         4871,
  79         5793,
  80         6889,
  81         8192,
  82         9742,
  83         11585,
  84         13777,
  85         16384,
  86         19484,
  87         23170,
  88         27554,
  89 };
  90 EXPORT_SYMBOL_GPL(wm831x_isinkv_values);
  91
  92 static int wm831x_reg_locked(struct wm831x *wm831x, unsigned short reg)
  93 {
  94         if (!wm831x->locked)
  95                 return 0;
  96
  97         switch (reg) {
  98         case WM831X_WATCHDOG:
  99         case WM831X_DC4_CONTROL:
 100         case WM831X_ON_PIN_CONTROL:
 101         case WM831X_BACKUP_CHARGER_CONTROL:
 102         case WM831X_CHARGER_CONTROL_1:
 103         case WM831X_CHARGER_CONTROL_2:
 104                 return 1;
 105
 106         default:
 107                 return 0;
 108         }
 109 }
 110
 111 /**
 112  * wm831x_reg_unlock: Unlock user keyed registers
 113  *
 114  * The WM831x has a user key preventing writes to particularly
 115  * critical registers.  This function locks those registers,
 116  * allowing writes to them.
 117  */
 118 void wm831x_reg_lock(struct wm831x *wm831x)
 119 {
 120         int ret;
 121
 122         ret = wm831x_reg_write(wm831x, WM831X_SECURITY_KEY, 0);
 123         if (ret == 0) {
 124                 dev_vdbg(wm831x->dev, "Registers locked\n");
 125
 126                 mutex_lock(&wm831x->io_lock);
 127                 WARN_ON(wm831x->locked);
 128                 wm831x->locked = 1;
 129                 mutex_unlock(&wm831x->io_lock);
 130         } else {
 131                 dev_err(wm831x->dev, "Failed to lock registers: %d\n", ret);
 132         }
 133
 134 }
 135 EXPORT_SYMBOL_GPL(wm831x_reg_lock);
 136
 137 /**
 138  * wm831x_reg_unlock: Unlock user keyed registers
 139  *
 140  * The WM831x has a user key preventing writes to particularly
 141  * critical registers.  This function locks those registers,
 142  * preventing spurious writes.
 143  */
 144 int wm831x_reg_unlock(struct wm831x *wm831x)
 145 {
 146         int ret;
 147
 148         /* 0x9716 is the value required to unlock the registers */
 149         ret = wm831x_reg_write(wm831x, WM831X_SECURITY_KEY, 0x9716);
 150         if (ret == 0) {
 151                 dev_vdbg(wm831x->dev, "Registers unlocked\n");
 152
 153                 mutex_lock(&wm831x->io_lock);
 154                 WARN_ON(!wm831x->locked);
 155                 wm831x->locked = 0;
 156                 mutex_unlock(&wm831x->io_lock);
 157         }
 158
 159         return ret;
 160 }
 161 EXPORT_SYMBOL_GPL(wm831x_reg_unlock);
 162
 163 static int wm831x_read(struct wm831x *wm831x, unsigned short reg,
 164                        int bytes, void *dest)
 165 {
 166         int ret, i;
 167         u16 *buf = dest;
 168
 169         BUG_ON(bytes % 2);
 170         BUG_ON(bytes <= 0);
 171
 172         ret = wm831x->read_dev(wm831x, reg, bytes, dest);
 173         if (ret < 0)
 174                 return ret;
 175
 176         for (i = 0; i < bytes / 2; i++) {
 177                 buf[i] = be16_to_cpu(buf[i]);
 178
 179                 dev_vdbg(wm831x->dev, "Read %04x from R%d(0x%x)\n",
 180                          buf[i], reg + i, reg + i);
 181         }
 182
 183         return 0;
 184 }
 185
 186 /**
 187  * wm831x_reg_read: Read a single WM831x register.
 188  *
 189  * @wm831x: Device to read from.
 190  * @reg: Register to read.
 191  */
 192 int wm831x_reg_read(struct wm831x *wm831x, unsigned short reg)
 193 {
 194         unsigned short val;
 195         int ret;
 196
 197         mutex_lock(&wm831x->io_lock);
 198
 199         ret = wm831x_read(wm831x, reg, 2, &val);
 200
 201         mutex_unlock(&wm831x->io_lock);
 202
 203         if (ret < 0)
 204                 return ret;
 205         else
 206                 return val;
 207 }
 208 EXPORT_SYMBOL_GPL(wm831x_reg_read);
 209
 210 /**
 211  * wm831x_bulk_read: Read multiple WM831x registers
 212  *
 213  * @wm831x: Device to read from
 214  * @reg: First register
 215  * @count: Number of registers
 216  * @buf: Buffer to fill.
 217  */
 218 int wm831x_bulk_read(struct wm831x *wm831x, unsigned short reg,
 219                      int count, u16 *buf)
 220 {
 221         int ret;
 222
 223         mutex_lock(&wm831x->io_lock);
 224
 225         ret = wm831x_read(wm831x, reg, count * 2, buf);
 226
 227         mutex_unlock(&wm831x->io_lock);
 228
 229         return ret;
 230 }
 231 EXPORT_SYMBOL_GPL(wm831x_bulk_read);
 232
 233 static int wm831x_write(struct wm831x *wm831x, unsigned short reg,
 234                         int bytes, void *src)
 235 {
 236         u16 *buf = src;
 237         int i;
 238
 239         BUG_ON(bytes % 2);
 240         BUG_ON(bytes <= 0);
 241
 242         for (i = 0; i < bytes / 2; i++) {
 243                 if (wm831x_reg_locked(wm831x, reg))
 244                         return -EPERM;
 245
 246                 dev_vdbg(wm831x->dev, "Write %04x to R%d(0x%x)\n",
 247                          buf[i], reg + i, reg + i);
 248
 249                 buf[i] = cpu_to_be16(buf[i]);
 250         }
 251
 252         return wm831x->write_dev(wm831x, reg, bytes, src);
 253 }
 254
 255 /**
 256  * wm831x_reg_write: Write a single WM831x register.
 257  *
 258  * @wm831x: Device to write to.
 259  * @reg: Register to write to.
 260  * @val: Value to write.
 261  */
 262 int wm831x_reg_write(struct wm831x *wm831x, unsigned short reg,
 263                      unsigned short val)
 264 {
 265         int ret;
 266
 267         mutex_lock(&wm831x->io_lock);
 268
 269         ret = wm831x_write(wm831x, reg, 2, &val);
 270
 271         mutex_unlock(&wm831x->io_lock);
 272
 273         return ret;
 274 }
 275 EXPORT_SYMBOL_GPL(wm831x_reg_write);
 276
 277 /**
 278  * wm831x_set_bits: Set the value of a bitfield in a WM831x register
 279  *
 280  * @wm831x: Device to write to.
 281  * @reg: Register to write to.
 282  * @mask: Mask of bits to set.
 283  * @val: Value to set (unshifted)
 284  */
 285 int wm831x_set_bits(struct wm831x *wm831x, unsigned short reg,
 286                     unsigned short mask, unsigned short val)
 287 {
 288         int ret;
 289         u16 r;
 290
 291         mutex_lock(&wm831x->io_lock);
 292
 293         ret = wm831x_read(wm831x, reg, 2, &r);
 294         if (ret < 0)
 295                 goto out;
 296
 297         r &= ~mask;
 298         r |= val;
 299
 300         ret = wm831x_write(wm831x, reg, 2, &r);
 301
 302 out:
 303         mutex_unlock(&wm831x->io_lock);
 304
 305         return ret;
 306 }
 307 EXPORT_SYMBOL_GPL(wm831x_set_bits);
 308
 309 /**
 310  * wm831x_auxadc_read: Read a value from the WM831x AUXADC
 311  *
 312  * @wm831x: Device to read from.
 313  * @input: AUXADC input to read.
 314  */
 315 int wm831x_auxadc_read(struct wm831x *wm831x, enum wm831x_auxadc input)
 316 {
 317         int ret, src, irq_masked, timeout;
 318
 319         /* Are we using the interrupt? */
 320         irq_masked = wm831x_reg_read(wm831x, WM831X_INTERRUPT_STATUS_1_MASK);
 321         irq_masked &= WM831X_AUXADC_DATA_EINT;
 322
 323         mutex_lock(&wm831x->auxadc_lock);
 324
 325         ret = wm831x_set_bits(wm831x, WM831X_AUXADC_CONTROL,
 326                               WM831X_AUX_ENA, WM831X_AUX_ENA);
 327         if (ret < 0) {
 328                 dev_err(wm831x->dev, "Failed to enable AUXADC: %d\n", ret);
 329                 goto out;
 330         }
 331
 332         /* We force a single source at present */
 333         src = input;
 334         ret = wm831x_reg_write(wm831x, WM831X_AUXADC_SOURCE,
 335                                1 << src);
 336         if (ret < 0) {
 337                 dev_err(wm831x->dev, "Failed to set AUXADC source: %d\n", ret);
 338                 goto out;
 339         }
 340
 341         /* Clear any notification from a very late arriving interrupt */
 342         try_wait_for_completion(&wm831x->auxadc_done);
 343
 344         ret = wm831x_set_bits(wm831x, WM831X_AUXADC_CONTROL,
 345                               WM831X_AUX_CVT_ENA, WM831X_AUX_CVT_ENA);
 346         if (ret < 0) {
 347                 dev_err(wm831x->dev, "Failed to start AUXADC: %d\n", ret);
 348                 goto disable;
 349         }
 350
 351         if (irq_masked) {
 352                 /* If we're not using interrupts then poll the
 353                  * interrupt status register */
 354                 timeout = 5;
 355                 while (timeout) {
 356                         msleep(1);
 357
 358                         ret = wm831x_reg_read(wm831x,
 359                                               WM831X_INTERRUPT_STATUS_1);
 360                         if (ret < 0) {
 361                                 dev_err(wm831x->dev,
 362                                         "ISR 1 read failed: %d\n", ret);
 363                                 goto disable;
 364                         }
 365
 366                         /* Did it complete? */
 367                         if (ret & WM831X_AUXADC_DATA_EINT) {
 368                                 wm831x_reg_write(wm831x,
 369                                                  WM831X_INTERRUPT_STATUS_1,
 370                                                  WM831X_AUXADC_DATA_EINT);
 371                                 break;
 372                         } else {
 373                                 dev_err(wm831x->dev,
 374                                         "AUXADC conversion timeout\n");
 375                                 ret = -EBUSY;
 376                                 goto disable;
 377                         }
 378                 }
 379         } else {
 380                 /* If we are using interrupts then wait for the
 381                  * interrupt to complete.  Use an extremely long
 382                  * timeout to handle situations with heavy load where
 383                  * the notification of the interrupt may be delayed by
 384                  * threaded IRQ handling. */
 385                 if (!wait_for_completion_timeout(&wm831x->auxadc_done,
 386                                                  msecs_to_jiffies(500))) {
 387                         dev_err(wm831x->dev, "Timed out waiting for AUXADC\n");
 388                         ret = -EBUSY;
 389                         goto disable;
 390                 }
 391         }
 392
 393         ret = wm831x_reg_read(wm831x, WM831X_AUXADC_DATA);
 394         if (ret < 0) {
 395                 dev_err(wm831x->dev, "Failed to read AUXADC data: %d\n", ret);
 396         } else {
 397                 src = ((ret & WM831X_AUX_DATA_SRC_MASK)
 398                        >> WM831X_AUX_DATA_SRC_SHIFT) - 1;
 399
 400                 if (src == 14)
 401                         src = WM831X_AUX_CAL;
 402
 403                 if (src != input) {
 404                         dev_err(wm831x->dev, "Data from source %d not %d\n",
 405                                 src, input);
 406                         ret = -EINVAL;
 407                 } else {
 408                         ret &= WM831X_AUX_DATA_MASK;
 409                 }
 410         }
 411
 412 disable:
 413         wm831x_set_bits(wm831x, WM831X_AUXADC_CONTROL, WM831X_AUX_ENA, 0);
 414 out:
 415         mutex_unlock(&wm831x->auxadc_lock);
 416         return ret;
 417 }
 418 EXPORT_SYMBOL_GPL(wm831x_auxadc_read);
 419
 420 static irqreturn_t wm831x_auxadc_irq(int irq, void *irq_data)
 421 {
 422         struct wm831x *wm831x = irq_data;
 423
 424         complete(&wm831x->auxadc_done);
 425
 426         return IRQ_HANDLED;
 427 }
 428
 429 /**
 430  * wm831x_auxadc_read_uv: Read a voltage from the WM831x AUXADC
 431  *
 432  * @wm831x: Device to read from.
 433  * @input: AUXADC input to read.
 434  */
 435 int wm831x_auxadc_read_uv(struct wm831x *wm831x, enum wm831x_auxadc input)
 436 {
 437         int ret;
 438
 439         ret = wm831x_auxadc_read(wm831x, input);
 440         if (ret < 0)
 441                 return ret;
 442
 443         ret *= 1465;
 444
 445         return ret;
 446 }
 447 EXPORT_SYMBOL_GPL(wm831x_auxadc_read_uv);
 448
 449 static struct resource wm831x_dcdc1_resources[] = {
 450         {
 451                 .start = WM831X_DC1_CONTROL_1,
 452                 .end   = WM831X_DC1_DVS_CONTROL,
 453                 .flags = IORESOURCE_IO,
 454         },
 455         {
 456                 .name  = "UV",
 457                 .start = WM831X_IRQ_UV_DC1,
 458                 .end   = WM831X_IRQ_UV_DC1,
 459                 .flags = IORESOURCE_IRQ,
 460         },
 461         {
 462                 .name  = "HC",
 463                 .start = WM831X_IRQ_HC_DC1,
 464                 .end   = WM831X_IRQ_HC_DC1,
 465                 .flags = IORESOURCE_IRQ,
 466         },
 467 };
 468
 469
 470 static struct resource wm831x_dcdc2_resources[] = {
 471         {
 472                 .start = WM831X_DC2_CONTROL_1,
 473                 .end   = WM831X_DC2_DVS_CONTROL,
 474                 .flags = IORESOURCE_IO,
 475         },
 476         {
 477                 .name  = "UV",
 478                 .start = WM831X_IRQ_UV_DC2,
 479                 .end   = WM831X_IRQ_UV_DC2,
 480                 .flags = IORESOURCE_IRQ,
 481         },
 482         {
 483                 .name  = "HC",
 484                 .start = WM831X_IRQ_HC_DC2,
 485                 .end   = WM831X_IRQ_HC_DC2,
 486                 .flags = IORESOURCE_IRQ,
 487         },
 488 };
 489
 490 static struct resource wm831x_dcdc3_resources[] = {
 491         {
 492                 .start = WM831X_DC3_CONTROL_1,
 493                 .end   = WM831X_DC3_SLEEP_CONTROL,
 494                 .flags = IORESOURCE_IO,
 495         },
 496         {
 497                 .name  = "UV",
 498                 .start = WM831X_IRQ_UV_DC3,
 499                 .end   = WM831X_IRQ_UV_DC3,
 500                 .flags = IORESOURCE_IRQ,
 501         },
 502 };
 503
 504 static struct resource wm831x_dcdc4_resources[] = {
 505         {
 506                 .start = WM831X_DC4_CONTROL,
 507                 .end   = WM831X_DC4_SLEEP_CONTROL,
 508                 .flags = IORESOURCE_IO,
 509         },
 510         {
 511                 .name  = "UV",
 512                 .start = WM831X_IRQ_UV_DC4,
 513                 .end   = WM831X_IRQ_UV_DC4,
 514                 .flags = IORESOURCE_IRQ,
 515         },
 516 };
 517
 518 static struct resource wm8320_dcdc4_buck_resources[] = {
 519         {
 520                 .start = WM831X_DC4_CONTROL,
 521                 .end   = WM832X_DC4_SLEEP_CONTROL,
 522                 .flags = IORESOURCE_IO,
 523         },
 524         {
 525                 .name  = "UV",
 526                 .start = WM831X_IRQ_UV_DC4,
 527                 .end   = WM831X_IRQ_UV_DC4,
 528                 .flags = IORESOURCE_IRQ,
 529         },
 530 };
 531
 532 static struct resource wm831x_gpio_resources[] = {
 533         {
 534                 .start = WM831X_IRQ_GPIO_1,
 535                 .end   = WM831X_IRQ_GPIO_16,
 536                 .flags = IORESOURCE_IRQ,
 537         },
 538 };
 539
 540 static struct resource wm831x_isink1_resources[] = {
 541         {
 542                 .start = WM831X_CURRENT_SINK_1,
 543                 .end   = WM831X_CURRENT_SINK_1,
 544                 .flags = IORESOURCE_IO,
 545         },
 546         {
 547                 .start = WM831X_IRQ_CS1,
 548                 .end   = WM831X_IRQ_CS1,
 549                 .flags = IORESOURCE_IRQ,
 550         },
 551 };
 552
 553 static struct resource wm831x_isink2_resources[] = {
 554         {
 555                 .start = WM831X_CURRENT_SINK_2,
 556                 .end   = WM831X_CURRENT_SINK_2,
 557                 .flags = IORESOURCE_IO,
 558         },
 559         {
 560                 .start = WM831X_IRQ_CS2,
 561                 .end   = WM831X_IRQ_CS2,
 562                 .flags = IORESOURCE_IRQ,
 563         },
 564 };
 565
 566 static struct resource wm831x_ldo1_resources[] = {
 567         {
 568                 .start = WM831X_LDO1_CONTROL,
 569                 .end   = WM831X_LDO1_SLEEP_CONTROL,
 570                 .flags = IORESOURCE_IO,
 571         },
 572         {
 573                 .name  = "UV",
 574                 .start = WM831X_IRQ_UV_LDO1,
 575                 .end   = WM831X_IRQ_UV_LDO1,
 576                 .flags = IORESOURCE_IRQ,
 577         },
 578 };
 579
 580 static struct resource wm831x_ldo2_resources[] = {
 581         {
 582                 .start = WM831X_LDO2_CONTROL,
 583                 .end   = WM831X_LDO2_SLEEP_CONTROL,
 584                 .flags = IORESOURCE_IO,
 585         },
 586         {
 587                 .name  = "UV",
 588                 .start = WM831X_IRQ_UV_LDO2,
 589                 .end   = WM831X_IRQ_UV_LDO2,
 590                 .flags = IORESOURCE_IRQ,
 591         },
 592 };
 593
 594 static struct resource wm831x_ldo3_resources[] = {
 595         {
 596                 .start = WM831X_LDO3_CONTROL,
 597                 .end   = WM831X_LDO3_SLEEP_CONTROL,
 598                 .flags = IORESOURCE_IO,
 599         },
 600         {
 601                 .name  = "UV",
 602                 .start = WM831X_IRQ_UV_LDO3,
 603                 .end   = WM831X_IRQ_UV_LDO3,
 604                 .flags = IORESOURCE_IRQ,
 605         },
 606 };
 607
 608 static struct resource wm831x_ldo4_resources[] = {
 609         {
 610                 .start = WM831X_LDO4_CONTROL,
 611                 .end   = WM831X_LDO4_SLEEP_CONTROL,
 612                 .flags = IORESOURCE_IO,
 613         },
 614         {
 615                 .name  = "UV",
 616                 .start = WM831X_IRQ_UV_LDO4,
 617                 .end   = WM831X_IRQ_UV_LDO4,
 618                 .flags = IORESOURCE_IRQ,
 619         },
 620 };
 621
 622 static struct resource wm831x_ldo5_resources[] = {
 623         {
 624                 .start = WM831X_LDO5_CONTROL,
 625                 .end   = WM831X_LDO5_SLEEP_CONTROL,
 626                 .flags = IORESOURCE_IO,
 627         },
 628         {
 629                 .name  = "UV",
 630                 .start = WM831X_IRQ_UV_LDO5,
 631                 .end   = WM831X_IRQ_UV_LDO5,
 632                 .flags = IORESOURCE_IRQ,
 633         },
 634 };
 635
 636 static struct resource wm831x_ldo6_resources[] = {
 637         {
 638                 .start = WM831X_LDO6_CONTROL,
 639                 .end   = WM831X_LDO6_SLEEP_CONTROL,
 640                 .flags = IORESOURCE_IO,
 641         },
 642         {
 643                 .name  = "UV",
 644                 .start = WM831X_IRQ_UV_LDO6,
 645                 .end   = WM831X_IRQ_UV_LDO6,
 646                 .flags = IORESOURCE_IRQ,
 647         },
 648 };
 649
 650 static struct resource wm831x_ldo7_resources[] = {
 651         {
 652                 .start = WM831X_LDO7_CONTROL,
 653                 .end   = WM831X_LDO7_SLEEP_CONTROL,
 654                 .flags = IORESOURCE_IO,
 655         },
 656         {
 657                 .name  = "UV",
 658                 .start = WM831X_IRQ_UV_LDO7,
 659                 .end   = WM831X_IRQ_UV_LDO7,
 660                 .flags = IORESOURCE_IRQ,
 661         },
 662 };
 663
 664 static struct resource wm831x_ldo8_resources[] = {
 665         {
 666                 .start = WM831X_LDO8_CONTROL,
 667                 .end   = WM831X_LDO8_SLEEP_CONTROL,
 668                 .flags = IORESOURCE_IO,
 669         },
 670         {
 671                 .name  = "UV",
 672                 .start = WM831X_IRQ_UV_LDO8,
 673                 .end   = WM831X_IRQ_UV_LDO8,
 674                 .flags = IORESOURCE_IRQ,
 675         },
 676 };
 677
 678 static struct resource wm831x_ldo9_resources[] = {
 679         {
 680                 .start = WM831X_LDO9_CONTROL,
 681                 .end   = WM831X_LDO9_SLEEP_CONTROL,
 682                 .flags = IORESOURCE_IO,
 683         },
 684         {
 685                 .name  = "UV",
 686                 .start = WM831X_IRQ_UV_LDO9,
 687                 .end   = WM831X_IRQ_UV_LDO9,
 688                 .flags = IORESOURCE_IRQ,
 689         },
 690 };
 691
 692 static struct resource wm831x_ldo10_resources[] = {
 693         {
 694                 .start = WM831X_LDO10_CONTROL,
 695                 .end   = WM831X_LDO10_SLEEP_CONTROL,
 696                 .flags = IORESOURCE_IO,
 697         },
 698         {
 699                 .name  = "UV",
 700                 .start = WM831X_IRQ_UV_LDO10,
 701                 .end   = WM831X_IRQ_UV_LDO10,
 702                 .flags = IORESOURCE_IRQ,
 703         },
 704 };
 705
 706 static struct resource wm831x_ldo11_resources[] = {
 707         {
 708                 .start = WM831X_LDO11_ON_CONTROL,
 709                 .end   = WM831X_LDO11_SLEEP_CONTROL,
 710                 .flags = IORESOURCE_IO,
 711         },
 712 };
 713
 714 static struct resource wm831x_on_resources[] = {
 715         {
 716                 .start = WM831X_IRQ_ON,
 717                 .end   = WM831X_IRQ_ON,
 718                 .flags = IORESOURCE_IRQ,
 719         },
 720 };
 721
 722
 723 static struct resource wm831x_power_resources[] = {
 724         {
 725                 .name = "SYSLO",
 726                 .start = WM831X_IRQ_PPM_SYSLO,
 727                 .end   = WM831X_IRQ_PPM_SYSLO,
 728                 .flags = IORESOURCE_IRQ,
 729         },
 730         {
 731                 .name = "PWR SRC",
 732                 .start = WM831X_IRQ_PPM_PWR_SRC,
 733                 .end   = WM831X_IRQ_PPM_PWR_SRC,
 734                 .flags = IORESOURCE_IRQ,
 735         },
 736         {
 737                 .name = "USB CURR",
 738                 .start = WM831X_IRQ_PPM_USB_CURR,
 739                 .end   = WM831X_IRQ_PPM_USB_CURR,
 740                 .flags = IORESOURCE_IRQ,
 741         },
 742         {
 743                 .name = "BATT HOT",
 744                 .start = WM831X_IRQ_CHG_BATT_HOT,
 745                 .end   = WM831X_IRQ_CHG_BATT_HOT,
 746                 .flags = IORESOURCE_IRQ,
 747         },
 748         {
 749                 .name = "BATT COLD",
 750                 .start = WM831X_IRQ_CHG_BATT_COLD,
 751                 .end   = WM831X_IRQ_CHG_BATT_COLD,
 752                 .flags = IORESOURCE_IRQ,
 753         },
 754         {
 755                 .name = "BATT FAIL",
 756                 .start = WM831X_IRQ_CHG_BATT_FAIL,
 757                 .end   = WM831X_IRQ_CHG_BATT_FAIL,
 758                 .flags = IORESOURCE_IRQ,
 759         },
 760         {
 761                 .name = "OV",
 762                 .start = WM831X_IRQ_CHG_OV,
 763                 .end   = WM831X_IRQ_CHG_OV,
 764                 .flags = IORESOURCE_IRQ,
 765         },
 766         {
 767                 .name = "END",
 768                 .start = WM831X_IRQ_CHG_END,
 769                 .end   = WM831X_IRQ_CHG_END,
 770                 .flags = IORESOURCE_IRQ,
 771         },
 772         {
 773                 .name = "TO",
 774                 .start = WM831X_IRQ_CHG_TO,
 775                 .end   = WM831X_IRQ_CHG_TO,
 776                 .flags = IORESOURCE_IRQ,
 777         },
 778         {
 779                 .name = "MODE",
 780                 .start = WM831X_IRQ_CHG_MODE,
 781                 .end   = WM831X_IRQ_CHG_MODE,
 782                 .flags = IORESOURCE_IRQ,
 783         },
 784         {
 785                 .name = "START",
 786                 .start = WM831X_IRQ_CHG_START,
 787                 .end   = WM831X_IRQ_CHG_START,
 788                 .flags = IORESOURCE_IRQ,
 789         },
 790 };
 791
 792 static struct resource wm831x_rtc_resources[] = {
 793         {
 794                 .name = "PER",
 795                 .start = WM831X_IRQ_RTC_PER,
 796                 .end   = WM831X_IRQ_RTC_PER,
 797                 .flags = IORESOURCE_IRQ,
 798         },
 799         {
 800                 .name = "ALM",
 801                 .start = WM831X_IRQ_RTC_ALM,
 802                 .end   = WM831X_IRQ_RTC_ALM,
 803                 .flags = IORESOURCE_IRQ,
 804         },
 805 };
 806
 807 static struct resource wm831x_status1_resources[] = {
 808         {
 809                 .start = WM831X_STATUS_LED_1,
 810                 .end   = WM831X_STATUS_LED_1,
 811                 .flags = IORESOURCE_IO,
 812         },
 813 };
 814
 815 static struct resource wm831x_status2_resources[] = {
 816         {
 817                 .start = WM831X_STATUS_LED_2,
 818                 .end   = WM831X_STATUS_LED_2,
 819                 .flags = IORESOURCE_IO,
 820         },
 821 };
 822
 823 static struct resource wm831x_touch_resources[] = {
 824         {
 825                 .name = "TCHPD",
 826                 .start = WM831X_IRQ_TCHPD,
 827                 .end   = WM831X_IRQ_TCHPD,
 828                 .flags = IORESOURCE_IRQ,
 829         },
 830         {
 831                 .name = "TCHDATA",
 832                 .start = WM831X_IRQ_TCHDATA,
 833                 .end   = WM831X_IRQ_TCHDATA,
 834                 .flags = IORESOURCE_IRQ,
 835         },
 836 };
 837
 838 static struct resource wm831x_wdt_resources[] = {
 839         {
 840                 .start = WM831X_IRQ_WDOG_TO,
 841                 .end   = WM831X_IRQ_WDOG_TO,
 842                 .flags = IORESOURCE_IRQ,
 843         },
 844 };
 845
 846 static struct mfd_cell wm8310_devs[] = {
 847         {
 848                 .name = "wm831x-backup",
 849         },
 850         {
 851                 .name = "wm831x-buckv",
 852                 .id = 1,
 853                 .num_resources = ARRAY_SIZE(wm831x_dcdc1_resources),
 854                 .resources = wm831x_dcdc1_resources,
 855         },
 856         {
 857                 .name = "wm831x-buckv",
 858                 .id = 2,
 859                 .num_resources = ARRAY_SIZE(wm831x_dcdc2_resources),
 860                 .resources = wm831x_dcdc2_resources,
 861         },
 862         {
 863                 .name = "wm831x-buckp",
 864                 .id = 3,
 865                 .num_resources = ARRAY_SIZE(wm831x_dcdc3_resources),
 866                 .resources = wm831x_dcdc3_resources,
 867         },
 868         {
 869                 .name = "wm831x-boostp",
 870                 .id = 4,
 871                 .num_resources = ARRAY_SIZE(wm831x_dcdc4_resources),
 872                 .resources = wm831x_dcdc4_resources,
 873         },
 874         {
 875                 .name = "wm831x-epe",
 876                 .id = 1,
 877         },
 878         {
 879                 .name = "wm831x-epe",
 880                 .id = 2,
 881         },
 882         {
 883                 .name = "wm831x-gpio",
 884                 .num_resources = ARRAY_SIZE(wm831x_gpio_resources),
 885                 .resources = wm831x_gpio_resources,
 886         },
 887         {
 888                 .name = "wm831x-hwmon",
 889         },
 890         {
 891                 .name = "wm831x-isink",
 892                 .id = 1,
 893                 .num_resources = ARRAY_SIZE(wm831x_isink1_resources),
 894                 .resources = wm831x_isink1_resources,
 895         },
 896         {
 897                 .name = "wm831x-isink",
 898                 .id = 2,
 899                 .num_resources = ARRAY_SIZE(wm831x_isink2_resources),
 900                 .resources = wm831x_isink2_resources,
 901         },
 902         {
 903                 .name = "wm831x-ldo",
 904                 .id = 1,
 905                 .num_resources = ARRAY_SIZE(wm831x_ldo1_resources),
 906                 .resources = wm831x_ldo1_resources,
 907         },
 908         {
 909                 .name = "wm831x-ldo",
 910                 .id = 2,
 911                 .num_resources = ARRAY_SIZE(wm831x_ldo2_resources),
 912                 .resources = wm831x_ldo2_resources,
 913         },
 914         {
 915                 .name = "wm831x-ldo",
 916                 .id = 3,
 917                 .num_resources = ARRAY_SIZE(wm831x_ldo3_resources),
 918                 .resources = wm831x_ldo3_resources,
 919         },
 920         {
 921                 .name = "wm831x-ldo",
 922                 .id = 4,
 923                 .num_resources = ARRAY_SIZE(wm831x_ldo4_resources),
 924                 .resources = wm831x_ldo4_resources,
 925         },
 926         {
 927                 .name = "wm831x-ldo",
 928                 .id = 5,
 929                 .num_resources = ARRAY_SIZE(wm831x_ldo5_resources),
 930                 .resources = wm831x_ldo5_resources,
 931         },
 932         {
 933                 .name = "wm831x-ldo",
 934                 .id = 6,
 935                 .num_resources = ARRAY_SIZE(wm831x_ldo6_resources),
 936                 .resources = wm831x_ldo6_resources,
 937         },
 938         {
 939                 .name = "wm831x-aldo",
 940                 .id = 7,
 941                 .num_resources = ARRAY_SIZE(wm831x_ldo7_resources),
 942                 .resources = wm831x_ldo7_resources,
 943         },
 944         {
 945                 .name = "wm831x-aldo",
 946                 .id = 8,
 947                 .num_resources = ARRAY_SIZE(wm831x_ldo8_resources),
 948                 .resources = wm831x_ldo8_resources,
 949         },
 950         {
 951                 .name = "wm831x-aldo",
 952                 .id = 9,
 953                 .num_resources = ARRAY_SIZE(wm831x_ldo9_resources),
 954                 .resources = wm831x_ldo9_resources,
 955         },
 956         {
 957                 .name = "wm831x-aldo",
 958                 .id = 10,
 959                 .num_resources = ARRAY_SIZE(wm831x_ldo10_resources),
 960                 .resources = wm831x_ldo10_resources,
 961         },
 962         {
 963                 .name = "wm831x-alive-ldo",
 964                 .id = 11,
 965                 .num_resources = ARRAY_SIZE(wm831x_ldo11_resources),
 966                 .resources = wm831x_ldo11_resources,
 967         },
 968         {
 969                 .name = "wm831x-on",
 970                 .num_resources = ARRAY_SIZE(wm831x_on_resources),
 971                 .resources = wm831x_on_resources,
 972         },
 973         {
 974                 .name = "wm831x-power",
 975                 .num_resources = ARRAY_SIZE(wm831x_power_resources),
 976                 .resources = wm831x_power_resources,
 977         },
 978         {
 979                 .name = "wm831x-rtc",
 980                 .num_resources = ARRAY_SIZE(wm831x_rtc_resources),
 981                 .resources = wm831x_rtc_resources,
 982         },
 983         {
 984                 .name = "wm831x-status",
 985                 .id = 1,
 986                 .num_resources = ARRAY_SIZE(wm831x_status1_resources),
 987                 .resources = wm831x_status1_resources,
 988         },
 989         {
 990                 .name = "wm831x-status",
 991                 .id = 2,
 992                 .num_resources = ARRAY_SIZE(wm831x_status2_resources),
 993                 .resources = wm831x_status2_resources,
 994         },
 995         {
 996                 .name = "wm831x-watchdog",
 997                 .num_resources = ARRAY_SIZE(wm831x_wdt_resources),
 998                 .resources = wm831x_wdt_resources,
 999         },
1000 };
1001
1002 static struct mfd_cell wm8311_devs[] = {
1003         {
1004                 .name = "wm831x-backup",
1005         },
1006         {
1007                 .name = "wm831x-buckv",
1008                 .id = 1,
1009                 .num_resources = ARRAY_SIZE(wm831x_dcdc1_resources),
1010                 .resources = wm831x_dcdc1_resources,
1011         },
1012         {
1013                 .name = "wm831x-buckv",
1014                 .id = 2,
1015                 .num_resources = ARRAY_SIZE(wm831x_dcdc2_resources),
1016                 .resources = wm831x_dcdc2_resources,
1017         },
1018         {
1019                 .name = "wm831x-buckp",
1020                 .id = 3,
1021                 .num_resources = ARRAY_SIZE(wm831x_dcdc3_resources),
1022                 .resources = wm831x_dcdc3_resources,
1023         },
1024         {
1025                 .name = "wm831x-boostp",
1026                 .id = 4,
1027                 .num_resources = ARRAY_SIZE(wm831x_dcdc4_resources),
1028                 .resources = wm831x_dcdc4_resources,
1029         },
1030         {
1031                 .name = "wm831x-epe",
1032                 .id = 1,
1033         },
1034         {
1035                 .name = "wm831x-epe",
1036                 .id = 2,
1037         },
1038         {
1039                 .name = "wm831x-gpio",
1040                 .num_resources = ARRAY_SIZE(wm831x_gpio_resources),
1041                 .resources = wm831x_gpio_resources,
1042         },
1043         {
1044                 .name = "wm831x-hwmon",
1045         },
1046         {
1047                 .name = "wm831x-isink",
1048                 .id = 1,
1049                 .num_resources = ARRAY_SIZE(wm831x_isink1_resources),
1050                 .resources = wm831x_isink1_resources,
1051         },
1052         {
1053                 .name = "wm831x-isink",
1054                 .id = 2,
1055                 .num_resources = ARRAY_SIZE(wm831x_isink2_resources),
1056                 .resources = wm831x_isink2_resources,
1057         },
1058         {
1059                 .name = "wm831x-ldo",
1060                 .id = 1,
1061                 .num_resources = ARRAY_SIZE(wm831x_ldo1_resources),
1062                 .resources = wm831x_ldo1_resources,
1063         },
1064         {
1065                 .name = "wm831x-ldo",
1066                 .id = 2,
1067                 .num_resources = ARRAY_SIZE(wm831x_ldo2_resources),
1068                 .resources = wm831x_ldo2_resources,
1069         },
1070         {
1071                 .name = "wm831x-ldo",
1072                 .id = 3,
1073                 .num_resources = ARRAY_SIZE(wm831x_ldo3_resources),
1074                 .resources = wm831x_ldo3_resources,
1075         },
1076         {
1077                 .name = "wm831x-ldo",
1078                 .id = 4,
1079                 .num_resources = ARRAY_SIZE(wm831x_ldo4_resources),
1080                 .resources = wm831x_ldo4_resources,
1081         },
1082         {
1083                 .name = "wm831x-ldo",
1084                 .id = 5,
1085                 .num_resources = ARRAY_SIZE(wm831x_ldo5_resources),
1086                 .resources = wm831x_ldo5_resources,
1087         },
1088         {
1089                 .name = "wm831x-aldo",
1090                 .id = 7,
1091                 .num_resources = ARRAY_SIZE(wm831x_ldo7_resources),
1092                 .resources = wm831x_ldo7_resources,
1093         },
1094         {
1095                 .name = "wm831x-alive-ldo",
1096                 .id = 11,
1097                 .num_resources = ARRAY_SIZE(wm831x_ldo11_resources),
1098                 .resources = wm831x_ldo11_resources,
1099         },
1100         {
1101                 .name = "wm831x-on",
1102                 .num_resources = ARRAY_SIZE(wm831x_on_resources),
1103                 .resources = wm831x_on_resources,
1104         },
1105         {
1106                 .name = "wm831x-power",
1107                 .num_resources = ARRAY_SIZE(wm831x_power_resources),
1108                 .resources = wm831x_power_resources,
1109         },
1110         {
1111                 .name = "wm831x-rtc",
1112                 .num_resources = ARRAY_SIZE(wm831x_rtc_resources),
1113                 .resources = wm831x_rtc_resources,
1114         },
1115         {
1116                 .name = "wm831x-status",
1117                 .id = 1,
1118                 .num_resources = ARRAY_SIZE(wm831x_status1_resources),
1119                 .resources = wm831x_status1_resources,
1120         },
1121         {
1122                 .name = "wm831x-status",
1123                 .id = 2,
1124                 .num_resources = ARRAY_SIZE(wm831x_status2_resources),
1125                 .resources = wm831x_status2_resources,
1126         },
1127         {
1128                 .name = "wm831x-touch",
1129                 .num_resources = ARRAY_SIZE(wm831x_touch_resources),
1130                 .resources = wm831x_touch_resources,
1131         },
1132         {
1133                 .name = "wm831x-watchdog",
1134                 .num_resources = ARRAY_SIZE(wm831x_wdt_resources),
1135                 .resources = wm831x_wdt_resources,
1136         },
1137 };
1138
1139 static struct mfd_cell wm8312_devs[] = {
1140         {
1141                 .name = "wm831x-backup",
1142         },
1143         {
1144                 .name = "wm831x-buckv",
1145                 .id = 1,
1146                 .num_resources = ARRAY_SIZE(wm831x_dcdc1_resources),
1147                 .resources = wm831x_dcdc1_resources,
1148         },
1149         {
1150                 .name = "wm831x-buckv",
1151                 .id = 2,
1152                 .num_resources = ARRAY_SIZE(wm831x_dcdc2_resources),
1153                 .resources = wm831x_dcdc2_resources,
1154         },
1155         {
1156                 .name = "wm831x-buckp",
1157                 .id = 3,
1158                 .num_resources = ARRAY_SIZE(wm831x_dcdc3_resources),
1159                 .resources = wm831x_dcdc3_resources,
1160         },
1161         {
1162                 .name = "wm831x-boostp",
1163                 .id = 4,
1164                 .num_resources = ARRAY_SIZE(wm831x_dcdc4_resources),
1165                 .resources = wm831x_dcdc4_resources,
1166         },
1167         {
1168                 .name = "wm831x-epe",
1169                 .id = 1,
1170         },
1171         {
1172                 .name = "wm831x-epe",
1173                 .id = 2,
1174         },
1175         {
1176                 .name = "wm831x-gpio",
1177                 .num_resources = ARRAY_SIZE(wm831x_gpio_resources),
1178                 .resources = wm831x_gpio_resources,
1179         },
1180         {
1181                 .name = "wm831x-hwmon",
1182         },
1183         {
1184                 .name = "wm831x-isink",
1185                 .id = 1,
1186                 .num_resources = ARRAY_SIZE(wm831x_isink1_resources),
1187                 .resources = wm831x_isink1_resources,
1188         },
1189         {
1190                 .name = "wm831x-isink",
1191                 .id = 2,
1192                 .num_resources = ARRAY_SIZE(wm831x_isink2_resources),
1193                 .resources = wm831x_isink2_resources,
1194         },
1195         {
1196                 .name = "wm831x-ldo",
1197                 .id = 1,
1198                 .num_resources = ARRAY_SIZE(wm831x_ldo1_resources),
1199                 .resources = wm831x_ldo1_resources,
1200         },
1201         {
1202                 .name = "wm831x-ldo",
1203                 .id = 2,
1204                 .num_resources = ARRAY_SIZE(wm831x_ldo2_resources),
1205                 .resources = wm831x_ldo2_resources,
1206         },
1207         {
1208                 .name = "wm831x-ldo",
1209                 .id = 3,
1210                 .num_resources = ARRAY_SIZE(wm831x_ldo3_resources),
1211                 .resources = wm831x_ldo3_resources,
1212         },
1213         {
1214                 .name = "wm831x-ldo",
1215                 .id = 4,
1216                 .num_resources = ARRAY_SIZE(wm831x_ldo4_resources),
1217                 .resources = wm831x_ldo4_resources,
1218         },
1219         {
1220                 .name = "wm831x-ldo",
1221                 .id = 5,
1222                 .num_resources = ARRAY_SIZE(wm831x_ldo5_resources),
1223                 .resources = wm831x_ldo5_resources,
1224         },
1225         {
1226                 .name = "wm831x-ldo",
1227                 .id = 6,
1228                 .num_resources = ARRAY_SIZE(wm831x_ldo6_resources),
1229                 .resources = wm831x_ldo6_resources,
1230         },
1231         {
1232                 .name = "wm831x-aldo",
1233                 .id = 7,
1234                 .num_resources = ARRAY_SIZE(wm831x_ldo7_resources),
1235                 .resources = wm831x_ldo7_resources,
1236         },
1237         {
1238                 .name = "wm831x-aldo",
1239                 .id = 8,
1240                 .num_resources = ARRAY_SIZE(wm831x_ldo8_resources),
1241                 .resources = wm831x_ldo8_resources,
1242         },
1243         {
1244                 .name = "wm831x-aldo",
1245                 .id = 9,
1246                 .num_resources = ARRAY_SIZE(wm831x_ldo9_resources),
1247                 .resources = wm831x_ldo9_resources,
1248         },
1249         {
1250                 .name = "wm831x-aldo",
1251                 .id = 10,
1252                 .num_resources = ARRAY_SIZE(wm831x_ldo10_resources),
1253                 .resources = wm831x_ldo10_resources,
1254         },
1255         {
1256                 .name = "wm831x-alive-ldo",
1257                 .id = 11,
1258                 .num_resources = ARRAY_SIZE(wm831x_ldo11_resources),
1259                 .resources = wm831x_ldo11_resources,
1260         },
1261         {
1262                 .name = "wm831x-on",
1263                 .num_resources = ARRAY_SIZE(wm831x_on_resources),
1264                 .resources = wm831x_on_resources,
1265         },
1266         {
1267                 .name = "wm831x-power",
1268                 .num_resources = ARRAY_SIZE(wm831x_power_resources),
1269                 .resources = wm831x_power_resources,
1270         },
1271         {
1272                 .name = "wm831x-rtc",
1273                 .num_resources = ARRAY_SIZE(wm831x_rtc_resources),
1274                 .resources = wm831x_rtc_resources,
1275         },
1276         {
1277                 .name = "wm831x-status",
1278                 .id = 1,
1279                 .num_resources = ARRAY_SIZE(wm831x_status1_resources),
1280                 .resources = wm831x_status1_resources,
1281         },
1282         {
1283                 .name = "wm831x-status",
1284                 .id = 2,
1285                 .num_resources = ARRAY_SIZE(wm831x_status2_resources),
1286                 .resources = wm831x_status2_resources,
1287         },
1288         {
1289                 .name = "wm831x-touch",
1290                 .num_resources = ARRAY_SIZE(wm831x_touch_resources),
1291                 .resources = wm831x_touch_resources,
1292         },
1293         {
1294                 .name = "wm831x-watchdog",
1295                 .num_resources = ARRAY_SIZE(wm831x_wdt_resources),
1296                 .resources = wm831x_wdt_resources,
1297         },
1298 };
1299
1300 static struct mfd_cell wm8320_devs[] = {
1301         {
1302                 .name = "wm831x-backup",
1303         },
1304         {
1305                 .name = "wm831x-buckv",
1306                 .id = 1,
1307                 .num_resources = ARRAY_SIZE(wm831x_dcdc1_resources),
1308                 .resources = wm831x_dcdc1_resources,
1309         },
1310         {
1311                 .name = "wm831x-buckv",
1312                 .id = 2,
1313                 .num_resources = ARRAY_SIZE(wm831x_dcdc2_resources),
1314                 .resources = wm831x_dcdc2_resources,
1315         },
1316         {
1317                 .name = "wm831x-buckp",
1318                 .id = 3,
1319                 .num_resources = ARRAY_SIZE(wm831x_dcdc3_resources),
1320                 .resources = wm831x_dcdc3_resources,
1321         },
1322         {
1323                 .name = "wm831x-buckp",
1324                 .id = 4,
1325                 .num_resources = ARRAY_SIZE(wm8320_dcdc4_buck_resources),
1326                 .resources = wm8320_dcdc4_buck_resources,
1327         },
1328         {
1329                 .name = "wm831x-gpio",
1330                 .num_resources = ARRAY_SIZE(wm831x_gpio_resources),
1331                 .resources = wm831x_gpio_resources,
1332         },
1333         {
1334                 .name = "wm831x-hwmon",
1335         },
1336         {
1337                 .name = "wm831x-ldo",
1338                 .id = 1,
1339                 .num_resources = ARRAY_SIZE(wm831x_ldo1_resources),
1340                 .resources = wm831x_ldo1_resources,
1341         },
1342         {
1343                 .name = "wm831x-ldo",
1344                 .id = 2,
1345                 .num_resources = ARRAY_SIZE(wm831x_ldo2_resources),
1346                 .resources = wm831x_ldo2_resources,
1347         },
1348         {
1349                 .name = "wm831x-ldo",
1350                 .id = 3,
1351                 .num_resources = ARRAY_SIZE(wm831x_ldo3_resources),
1352                 .resources = wm831x_ldo3_resources,
1353         },
1354         {
1355                 .name = "wm831x-ldo",
1356                 .id = 4,
1357                 .num_resources = ARRAY_SIZE(wm831x_ldo4_resources),
1358                 .resources = wm831x_ldo4_resources,
1359         },
1360         {
1361                 .name = "wm831x-ldo",
1362                 .id = 5,
1363                 .num_resources = ARRAY_SIZE(wm831x_ldo5_resources),
1364                 .resources = wm831x_ldo5_resources,
1365         },
1366         {
1367                 .name = "wm831x-ldo",
1368                 .id = 6,
1369                 .num_resources = ARRAY_SIZE(wm831x_ldo6_resources),
1370                 .resources = wm831x_ldo6_resources,
1371         },
1372         {
1373                 .name = "wm831x-aldo",
1374                 .id = 7,
1375                 .num_resources = ARRAY_SIZE(wm831x_ldo7_resources),
1376                 .resources = wm831x_ldo7_resources,
1377         },
1378         {
1379                 .name = "wm831x-aldo",
1380                 .id = 8,
1381                 .num_resources = ARRAY_SIZE(wm831x_ldo8_resources),
1382                 .resources = wm831x_ldo8_resources,
1383         },
1384         {
1385                 .name = "wm831x-aldo",
1386                 .id = 9,
1387                 .num_resources = ARRAY_SIZE(wm831x_ldo9_resources),
1388                 .resources = wm831x_ldo9_resources,
1389         },
1390         {
1391                 .name = "wm831x-aldo",
1392                 .id = 10,
1393                 .num_resources = ARRAY_SIZE(wm831x_ldo10_resources),
1394                 .resources = wm831x_ldo10_resources,
1395         },
1396         {
1397                 .name = "wm831x-alive-ldo",
1398                 .id = 11,
1399                 .num_resources = ARRAY_SIZE(wm831x_ldo11_resources),
1400                 .resources = wm831x_ldo11_resources,
1401         },
1402         {
1403                 .name = "wm831x-on",
1404                 .num_resources = ARRAY_SIZE(wm831x_on_resources),
1405                 .resources = wm831x_on_resources,
1406         },
1407         {
1408                 .name = "wm831x-rtc",
1409                 .num_resources = ARRAY_SIZE(wm831x_rtc_resources),
1410                 .resources = wm831x_rtc_resources,
1411         },
1412         {
1413                 .name = "wm831x-status",
1414                 .id = 1,
1415                 .num_resources = ARRAY_SIZE(wm831x_status1_resources),
1416                 .resources = wm831x_status1_resources,
1417         },
1418         {
1419                 .name = "wm831x-status",
1420                 .id = 2,
1421                 .num_resources = ARRAY_SIZE(wm831x_status2_resources),
1422                 .resources = wm831x_status2_resources,
1423         },
1424         {
1425                 .name = "wm831x-watchdog",
1426                 .num_resources = ARRAY_SIZE(wm831x_wdt_resources),
1427                 .resources = wm831x_wdt_resources,
1428         },
1429 };
1430
1431 static struct mfd_cell backlight_devs[] = {
1432         {
1433                 .name = "wm831x-backlight",
1434         },
1435 };
1436
1437 /*
1438  * Instantiate the generic non-control parts of the device.
1439  */
1440 int wm831x_device_init(struct wm831x *wm831x, unsigned long id, int irq)
1441 {
1442         struct wm831x_pdata *pdata = wm831x->dev->platform_data;
1443         int rev;
1444         enum wm831x_parent parent;
1445         int ret;
1446
1447         mutex_init(&wm831x->io_lock);
1448         mutex_init(&wm831x->key_lock);
1449         mutex_init(&wm831x->auxadc_lock);
1450         init_completion(&wm831x->auxadc_done);
1451         dev_set_drvdata(wm831x->dev, wm831x);
1452
1453         ret = wm831x_reg_read(wm831x, WM831X_PARENT_ID);
1454         if (ret < 0) {
1455                 dev_err(wm831x->dev, "Failed to read parent ID: %d\n", ret);
1456                 goto err;
1457         }
1458         switch (ret) {
1459         case 0x6204:
1460         case 0x6246:
1461                 break;
1462         default:
1463                 dev_err(wm831x->dev, "Device is not a WM831x: ID %x\n", ret);
1464                 ret = -EINVAL;
1465                 goto err;
1466         }
1467
1468         ret = wm831x_reg_read(wm831x, WM831X_REVISION);
1469         if (ret < 0) {
1470                 dev_err(wm831x->dev, "Failed to read revision: %d\n", ret);
1471                 goto err;
1472         }
1473         rev = (ret & WM831X_PARENT_REV_MASK) >> WM831X_PARENT_REV_SHIFT;
1474
1475         ret = wm831x_reg_read(wm831x, WM831X_RESET_ID);
1476         if (ret < 0) {
1477                 dev_err(wm831x->dev, "Failed to read device ID: %d\n", ret);
1478                 goto err;
1479         }
1480
1481         /* Some engineering samples do not have the ID set, rely on
1482          * the device being registered correctly.
1483          */
1484         if (ret == 0) {
1485                 dev_info(wm831x->dev, "Device is an engineering sample\n");
1486                 ret = id;
1487         }
1488
1489         switch (ret) {
1490         case WM8310:
1491                 parent = WM8310;
1492                 wm831x->num_gpio = 16;
1493                 wm831x->charger_irq_wake = 1;
1494                 if (rev > 0) {
1495                         wm831x->has_gpio_ena = 1;
1496                         wm831x->has_cs_sts = 1;
1497                 }
1498
1499                 dev_info(wm831x->dev, "WM8310 revision %c\n", 'A' + rev);
1500                 break;
1501
1502         case WM8311:
1503                 parent = WM8311;
1504                 wm831x->num_gpio = 16;
1505                 wm831x->charger_irq_wake = 1;
1506                 if (rev > 0) {
1507                         wm831x->has_gpio_ena = 1;
1508                         wm831x->has_cs_sts = 1;
1509                 }
1510
1511                 dev_info(wm831x->dev, "WM8311 revision %c\n", 'A' + rev);
1512                 break;
1513
1514         case WM8312:
1515                 parent = WM8312;
1516                 wm831x->num_gpio = 16;
1517                 wm831x->charger_irq_wake = 1;
1518                 if (rev > 0) {
1519                         wm831x->has_gpio_ena = 1;
1520                         wm831x->has_cs_sts = 1;
1521                 }
1522
1523                 dev_info(wm831x->dev, "WM8312 revision %c\n", 'A' + rev);
1524                 break;
1525
1526         case WM8320:
1527                 parent = WM8320;
1528                 wm831x->num_gpio = 12;
1529                 dev_info(wm831x->dev, "WM8320 revision %c\n", 'A' + rev);
1530                 break;
1531
1532         case WM8321:
1533                 parent = WM8321;
1534                 wm831x->num_gpio = 12;
1535                 dev_info(wm831x->dev, "WM8321 revision %c\n", 'A' + rev);
1536                 break;
1537
1538         case WM8325:
1539                 parent = WM8325;
1540                 wm831x->num_gpio = 12;
1541                 dev_info(wm831x->dev, "WM8325 revision %c\n", 'A' + rev);
1542                 break;
1543
1544         default:
1545                 dev_err(wm831x->dev, "Unknown WM831x device %04x\n", ret);
1546                 ret = -EINVAL;
1547                 goto err;
1548         }
1549
1550         /* This will need revisiting in future but is OK for all
1551          * current parts.
1552          */
1553         if (parent != id)
1554                 dev_warn(wm831x->dev, "Device was registered as a WM%lx\n",
1555                          id);
1556
1557         /* Bootstrap the user key */
1558         ret = wm831x_reg_read(wm831x, WM831X_SECURITY_KEY);
1559         if (ret < 0) {
1560                 dev_err(wm831x->dev, "Failed to read security key: %d\n", ret);
1561                 goto err;
1562         }
1563         if (ret != 0) {
1564                 dev_warn(wm831x->dev, "Security key had non-zero value %x\n",
1565                          ret);
1566                 wm831x_reg_write(wm831x, WM831X_SECURITY_KEY, 0);
1567         }
1568         wm831x->locked = 1;
1569
1570         if (pdata && pdata->pre_init) {
1571                 ret = pdata->pre_init(wm831x);
1572                 if (ret != 0) {
1573                         dev_err(wm831x->dev, "pre_init() failed: %d\n", ret);
1574                         goto err;
1575                 }
1576         }
1577
1578         ret = wm831x_irq_init(wm831x, irq);
1579         if (ret != 0)
1580                 goto err;
1581
1582         if (wm831x->irq_base) {
1583                 ret = request_threaded_irq(wm831x->irq_base +
1584                                            WM831X_IRQ_AUXADC_DATA,
1585                                            NULL, wm831x_auxadc_irq, 0,
1586                                            "auxadc", wm831x);
1587                 if (ret < 0)
1588                         dev_err(wm831x->dev, "AUXADC IRQ request failed: %d\n",
1589                                 ret);
1590         }
1591
1592         /* The core device is up, instantiate the subdevices. */
1593         switch (parent) {
1594         case WM8310:
1595                 ret = mfd_add_devices(wm831x->dev, -1,
1596                                       wm8310_devs, ARRAY_SIZE(wm8310_devs),
1597                                       NULL, wm831x->irq_base);
1598                 break;
1599
1600         case WM8311:
1601                 ret = mfd_add_devices(wm831x->dev, -1,
1602                                       wm8311_devs, ARRAY_SIZE(wm8311_devs),
1603                                       NULL, wm831x->irq_base);
1604                 break;
1605
1606         case WM8312:
1607                 ret = mfd_add_devices(wm831x->dev, -1,
1608                                       wm8312_devs, ARRAY_SIZE(wm8312_devs),
1609                                       NULL, wm831x->irq_base);
1610                 break;
1611
1612         case WM8320:
1613                 ret = mfd_add_devices(wm831x->dev, -1,
1614                                       wm8320_devs, ARRAY_SIZE(wm8320_devs),
1615                                       NULL, 0);
1616                 break;
1617
1618         case WM8321:
1619                 ret = mfd_add_devices(wm831x->dev, -1,
1620                                       wm8320_devs, ARRAY_SIZE(wm8320_devs),
1621                                       NULL, 0);
1622                 break;
1623
1624         case WM8325:
1625                 ret = mfd_add_devices(wm831x->dev, -1,
1626                                       wm8320_devs, ARRAY_SIZE(wm8320_devs),
1627                                       NULL, wm831x->irq_base);
1628                 break;
1629
1630         default:
1631                 /* If this happens the bus probe function is buggy */
1632                 BUG();
1633         }
1634
1635         if (ret != 0) {
1636                 dev_err(wm831x->dev, "Failed to add children\n");
1637                 goto err_irq;
1638         }
1639
1640         if (pdata && pdata->backlight) {
1641                 /* Treat errors as non-critical */
1642                 ret = mfd_add_devices(wm831x->dev, -1, backlight_devs,
1643                                       ARRAY_SIZE(backlight_devs), NULL,
1644                                       wm831x->irq_base);
1645                 if (ret < 0)
1646                         dev_err(wm831x->dev, "Failed to add backlight: %d\n",
1647                                 ret);
1648         }
1649
1650         wm831x_otp_init(wm831x);
1651
1652         if (pdata && pdata->post_init) {
1653                 ret = pdata->post_init(wm831x);
1654                 if (ret != 0) {
1655                         dev_err(wm831x->dev, "post_init() failed: %d\n", ret);
1656                         goto err_irq;
1657                 }
1658         }
1659
1660         return 0;
1661
1662 err_irq:
1663         wm831x_irq_exit(wm831x);
1664 err:
1665         mfd_remove_devices(wm831x->dev);
1666         kfree(wm831x);
1667         return ret;
1668 }
1669
1670 void wm831x_device_exit(struct wm831x *wm831x)
1671 {
1672         wm831x_otp_exit(wm831x);
1673         mfd_remove_devices(wm831x->dev);
1674         if (wm831x->irq_base)
1675                 free_irq(wm831x->irq_base + WM831X_IRQ_AUXADC_DATA, wm831x);
1676         wm831x_irq_exit(wm831x);
1677         kfree(wm831x);
1678 }
1679
1680 int wm831x_device_suspend(struct wm831x *wm831x)
1681 {
1682         int reg, mask;
1683
1684         /* If the charger IRQs are a wake source then make sure we ack
1685          * them even if they're not actively being used (eg, no power
1686          * driver or no IRQ line wired up) then acknowledge the
1687          * interrupts otherwise suspend won't last very long.
1688          */
1689         if (wm831x->charger_irq_wake) {
1690                 reg = wm831x_reg_read(wm831x, WM831X_INTERRUPT_STATUS_2_MASK);
1691
1692                 mask = WM831X_CHG_BATT_HOT_EINT |
1693                         WM831X_CHG_BATT_COLD_EINT |
1694                         WM831X_CHG_BATT_FAIL_EINT |
1695                         WM831X_CHG_OV_EINT | WM831X_CHG_END_EINT |
1696                         WM831X_CHG_TO_EINT | WM831X_CHG_MODE_EINT |
1697                         WM831X_CHG_START_EINT;
1698
1699                 /* If any of the interrupts are masked read the statuses */
1700                 if (reg & mask)
1701                         reg = wm831x_reg_read(wm831x,
1702                                               WM831X_INTERRUPT_STATUS_2);
1703
1704                 if (reg & mask) {
1705                         dev_info(wm831x->dev,
1706                                  "Acknowledging masked charger IRQs: %x\n",
1707                                  reg & mask);
1708                         wm831x_reg_write(wm831x, WM831X_INTERRUPT_STATUS_2,
1709                                          reg & mask);
1710                 }
1711         }
1712
1713         return 0;
1714 }
1715
1716 MODULE_DESCRIPTION("Core support for the WM831X AudioPlus PMIC");
1717 MODULE_LICENSE("GPL");
1718 MODULE_AUTHOR("Mark Brown");