drivers/regulator/wm8350-regulator.c

   1 /*
   2  * wm8350.c  --  Voltage and current regulation for the Wolfson WM8350 PMIC
   3  *
   4  * Copyright 2007, 2008 Wolfson Microelectronics PLC.
   5  *
   6  * Author: Liam Girdwood
   7  *         linux@wolfsonmicro.com
   8  *
   9  *  This program is free software; you can redistribute  it and/or modify it
  10  *  under  the terms of  the GNU General  Public License as published by the
  11  *  Free Software Foundation;  either version 2 of the  License, or (at your
  12  *  option) any later version.
  13  */
  14
  15 #include <linux/module.h>
  16 #include <linux/moduleparam.h>
  17 #include <linux/init.h>
  18 #include <linux/bitops.h>
  19 #include <linux/err.h>
  20 #include <linux/i2c.h>
  21 #include <linux/mfd/wm8350/core.h>
  22 #include <linux/mfd/wm8350/pmic.h>
  23 #include <linux/platform_device.h>
  24 #include <linux/regulator/driver.h>
  25 #include <linux/regulator/machine.h>
  26
  27 /* Maximum value possible for VSEL */
  28 #define WM8350_DCDC_MAX_VSEL 0x66
  29
  30 /* Microamps */
  31 static const int isink_cur[] = {
  32         4,
  33         5,
  34         6,
  35         7,
  36         8,
  37         10,
  38         11,
  39         14,
  40         16,
  41         19,
  42         23,
  43         27,
  44         32,
  45         39,
  46         46,
  47         54,
  48         65,
  49         77,
  50         92,
  51         109,
  52         130,
  53         154,
  54         183,
  55         218,
  56         259,
  57         308,
  58         367,
  59         436,
  60         518,
  61         616,
  62         733,
  63         872,
  64         1037,
  65         1233,
  66         1466,
  67         1744,
  68         2073,
  69         2466,
  70         2933,
  71         3487,
  72         4147,
  73         4932,
  74         5865,
  75         6975,
  76         8294,
  77         9864,
  78         11730,
  79         13949,
  80         16589,
  81         19728,
  82         23460,
  83         27899,
  84         33178,
  85         39455,
  86         46920,
  87         55798,
  88         66355,
  89         78910,
  90         93840,
  91         111596,
  92         132710,
  93         157820,
  94         187681,
  95         223191
  96 };
  97
  98 static int get_isink_val(int min_uA, int max_uA, u16 *setting)
  99 {
 100         int i;
 101
 102         for (i = 0; i < ARRAY_SIZE(isink_cur); i++) {
 103                 if (min_uA <= isink_cur[i] && max_uA >= isink_cur[i]) {
 104                         *setting = i;
 105                         return 0;
 106                 }
 107         }
 108         return -EINVAL;
 109 }
 110
 111 static inline int wm8350_ldo_val_to_mvolts(unsigned int val)
 112 {
 113         if (val < 16)
 114                 return (val * 50) + 900;
 115         else
 116                 return ((val - 16) * 100) + 1800;
 117
 118 }
 119
 120 static inline unsigned int wm8350_ldo_mvolts_to_val(int mV)
 121 {
 122         if (mV < 1800)
 123                 return (mV - 900) / 50;
 124         else
 125                 return ((mV - 1800) / 100) + 16;
 126 }
 127
 128 static inline int wm8350_dcdc_val_to_mvolts(unsigned int val)
 129 {
 130         return (val * 25) + 850;
 131 }
 132
 133 static inline unsigned int wm8350_dcdc_mvolts_to_val(int mV)
 134 {
 135         return (mV - 850) / 25;
 136 }
 137
 138 static int wm8350_isink_set_current(struct regulator_dev *rdev, int min_uA,
 139         int max_uA)
 140 {
 141         struct wm8350 *wm8350 = rdev_get_drvdata(rdev);
 142         int isink = rdev_get_id(rdev);
 143         u16 val, setting;
 144         int ret;
 145
 146         ret = get_isink_val(min_uA, max_uA, &setting);
 147         if (ret != 0)
 148                 return ret;
 149
 150         switch (isink) {
 151         case WM8350_ISINK_A:
 152                 val = wm8350_reg_read(wm8350, WM8350_CURRENT_SINK_DRIVER_A) &
 153                     ~WM8350_CS1_ISEL_MASK;
 154                 wm8350_reg_write(wm8350, WM8350_CURRENT_SINK_DRIVER_A,
 155                                  val | setting);
 156                 break;
 157         case WM8350_ISINK_B:
 158                 val = wm8350_reg_read(wm8350, WM8350_CURRENT_SINK_DRIVER_B) &
 159                     ~WM8350_CS1_ISEL_MASK;
 160                 wm8350_reg_write(wm8350, WM8350_CURRENT_SINK_DRIVER_B,
 161                                  val | setting);
 162                 break;
 163         default:
 164                 return -EINVAL;
 165         }
 166
 167         return 0;
 168 }
 169
 170 static int wm8350_isink_get_current(struct regulator_dev *rdev)
 171 {
 172         struct wm8350 *wm8350 = rdev_get_drvdata(rdev);
 173         int isink = rdev_get_id(rdev);
 174         u16 val;
 175
 176         switch (isink) {
 177         case WM8350_ISINK_A:
 178                 val = wm8350_reg_read(wm8350, WM8350_CURRENT_SINK_DRIVER_A) &
 179                     WM8350_CS1_ISEL_MASK;
 180                 break;
 181         case WM8350_ISINK_B:
 182                 val = wm8350_reg_read(wm8350, WM8350_CURRENT_SINK_DRIVER_B) &
 183                     WM8350_CS1_ISEL_MASK;
 184                 break;
 185         default:
 186                 return 0;
 187         }
 188
 189         return isink_cur[val];
 190 }
 191
 192 /* turn on ISINK followed by DCDC */
 193 static int wm8350_isink_enable(struct regulator_dev *rdev)
 194 {
 195         struct wm8350 *wm8350 = rdev_get_drvdata(rdev);
 196         int isink = rdev_get_id(rdev);
 197
 198         switch (isink) {
 199         case WM8350_ISINK_A:
 200                 switch (wm8350->pmic.isink_A_dcdc) {
 201                 case WM8350_DCDC_2:
 202                 case WM8350_DCDC_5:
 203                         wm8350_set_bits(wm8350, WM8350_POWER_MGMT_7,
 204                                         WM8350_CS1_ENA);
 205                         wm8350_set_bits(wm8350, WM8350_CSA_FLASH_CONTROL,
 206                                         WM8350_CS1_DRIVE);
 207                         wm8350_set_bits(wm8350, WM8350_DCDC_LDO_REQUESTED,
 208                                         1 << (wm8350->pmic.isink_A_dcdc -
 209                                               WM8350_DCDC_1));
 210                         break;
 211                 default:
 212                         return -EINVAL;
 213                 }
 214                 break;
 215         case WM8350_ISINK_B:
 216                 switch (wm8350->pmic.isink_B_dcdc) {
 217                 case WM8350_DCDC_2:
 218                 case WM8350_DCDC_5:
 219                         wm8350_set_bits(wm8350, WM8350_POWER_MGMT_7,
 220                                         WM8350_CS2_ENA);
 221                         wm8350_set_bits(wm8350, WM8350_CSB_FLASH_CONTROL,
 222                                         WM8350_CS2_DRIVE);
 223                         wm8350_set_bits(wm8350, WM8350_DCDC_LDO_REQUESTED,
 224                                         1 << (wm8350->pmic.isink_B_dcdc -
 225                                               WM8350_DCDC_1));
 226                         break;
 227                 default:
 228                         return -EINVAL;
 229                 }
 230                 break;
 231         default:
 232                 return -EINVAL;
 233         }
 234         return 0;
 235 }
 236
 237 static int wm8350_isink_disable(struct regulator_dev *rdev)
 238 {
 239         struct wm8350 *wm8350 = rdev_get_drvdata(rdev);
 240         int isink = rdev_get_id(rdev);
 241
 242         switch (isink) {
 243         case WM8350_ISINK_A:
 244                 switch (wm8350->pmic.isink_A_dcdc) {
 245                 case WM8350_DCDC_2:
 246                 case WM8350_DCDC_5:
 247                         wm8350_clear_bits(wm8350, WM8350_DCDC_LDO_REQUESTED,
 248                                           1 << (wm8350->pmic.isink_A_dcdc -
 249                                                 WM8350_DCDC_1));
 250                         wm8350_clear_bits(wm8350, WM8350_POWER_MGMT_7,
 251                                           WM8350_CS1_ENA);
 252                         break;
 253                 default:
 254                         return -EINVAL;
 255                 }
 256                 break;
 257         case WM8350_ISINK_B:
 258                 switch (wm8350->pmic.isink_B_dcdc) {
 259                 case WM8350_DCDC_2:
 260                 case WM8350_DCDC_5:
 261                         wm8350_clear_bits(wm8350, WM8350_DCDC_LDO_REQUESTED,
 262                                           1 << (wm8350->pmic.isink_B_dcdc -
 263                                                 WM8350_DCDC_1));
 264                         wm8350_clear_bits(wm8350, WM8350_POWER_MGMT_7,
 265                                           WM8350_CS2_ENA);
 266                         break;
 267                 default:
 268                         return -EINVAL;
 269                 }
 270                 break;
 271         default:
 272                 return -EINVAL;
 273         }
 274         return 0;
 275 }
 276
 277 static int wm8350_isink_is_enabled(struct regulator_dev *rdev)
 278 {
 279         struct wm8350 *wm8350 = rdev_get_drvdata(rdev);
 280         int isink = rdev_get_id(rdev);
 281
 282         switch (isink) {
 283         case WM8350_ISINK_A:
 284                 return wm8350_reg_read(wm8350, WM8350_CURRENT_SINK_DRIVER_A) &
 285                     0x8000;
 286         case WM8350_ISINK_B:
 287                 return wm8350_reg_read(wm8350, WM8350_CURRENT_SINK_DRIVER_B) &
 288                     0x8000;
 289         }
 290         return -EINVAL;
 291 }
 292
 293 static int wm8350_isink_enable_time(struct regulator_dev *rdev)
 294 {
 295         struct wm8350 *wm8350 = rdev_get_drvdata(rdev);
 296         int isink = rdev_get_id(rdev);
 297         int reg;
 298
 299         switch (isink) {
 300         case WM8350_ISINK_A:
 301                 reg = wm8350_reg_read(wm8350, WM8350_CSA_FLASH_CONTROL);
 302                 break;
 303         case WM8350_ISINK_B:
 304                 reg = wm8350_reg_read(wm8350, WM8350_CSB_FLASH_CONTROL);
 305                 break;
 306         default:
 307                 return -EINVAL;
 308         }
 309
 310         if (reg & WM8350_CS1_FLASH_MODE) {
 311                 switch (reg & WM8350_CS1_ON_RAMP_MASK) {
 312                 case 0:
 313                         return 0;
 314                 case 1:
 315                         return 1950;
 316                 case 2:
 317                         return 3910;
 318                 case 3:
 319                         return 7800;
 320                 }
 321         } else {
 322                 switch (reg & WM8350_CS1_ON_RAMP_MASK) {
 323                 case 0:
 324                         return 0;
 325                 case 1:
 326                         return 250000;
 327                 case 2:
 328                         return 500000;
 329                 case 3:
 330                         return 1000000;
 331                 }
 332         }
 333
 334         return -EINVAL;
 335 }
 336
 337
 338 int wm8350_isink_set_flash(struct wm8350 *wm8350, int isink, u16 mode,
 339                            u16 trigger, u16 duration, u16 on_ramp, u16 off_ramp,
 340                            u16 drive)
 341 {
 342         switch (isink) {
 343         case WM8350_ISINK_A:
 344                 wm8350_reg_write(wm8350, WM8350_CSA_FLASH_CONTROL,
 345                                  (mode ? WM8350_CS1_FLASH_MODE : 0) |
 346                                  (trigger ? WM8350_CS1_TRIGSRC : 0) |
 347                                  duration | on_ramp | off_ramp | drive);
 348                 break;
 349         case WM8350_ISINK_B:
 350                 wm8350_reg_write(wm8350, WM8350_CSB_FLASH_CONTROL,
 351                                  (mode ? WM8350_CS2_FLASH_MODE : 0) |
 352                                  (trigger ? WM8350_CS2_TRIGSRC : 0) |
 353                                  duration | on_ramp | off_ramp | drive);
 354                 break;
 355         default:
 356                 return -EINVAL;
 357         }
 358         return 0;
 359 }
 360 EXPORT_SYMBOL_GPL(wm8350_isink_set_flash);
 361
 362 static int wm8350_dcdc_set_suspend_voltage(struct regulator_dev *rdev, int uV)
 363 {
 364         struct wm8350 *wm8350 = rdev_get_drvdata(rdev);
 365         int volt_reg, mV = uV / 1000, dcdc = rdev_get_id(rdev);
 366         u16 val;
 367
 368         dev_dbg(wm8350->dev, "%s %d mV %d\n", __func__, dcdc, mV);
 369
 370         if (mV && (mV < 850 || mV > 4025)) {
 371                 dev_err(wm8350->dev,
 372                         "DCDC%d suspend voltage %d mV out of range\n",
 373                         dcdc, mV);
 374                 return -EINVAL;
 375         }
 376         if (mV == 0)
 377                 mV = 850;
 378
 379         switch (dcdc) {
 380         case WM8350_DCDC_1:
 381                 volt_reg = WM8350_DCDC1_LOW_POWER;
 382                 break;
 383         case WM8350_DCDC_3:
 384                 volt_reg = WM8350_DCDC3_LOW_POWER;
 385                 break;
 386         case WM8350_DCDC_4:
 387                 volt_reg = WM8350_DCDC4_LOW_POWER;
 388                 break;
 389         case WM8350_DCDC_6:
 390                 volt_reg = WM8350_DCDC6_LOW_POWER;
 391                 break;
 392         case WM8350_DCDC_2:
 393         case WM8350_DCDC_5:
 394         default:
 395                 return -EINVAL;
 396         }
 397
 398         /* all DCDCs have same mV bits */
 399         val = wm8350_reg_read(wm8350, volt_reg) & ~WM8350_DC1_VSEL_MASK;
 400         wm8350_reg_write(wm8350, volt_reg,
 401                          val | wm8350_dcdc_mvolts_to_val(mV));
 402         return 0;
 403 }
 404
 405 static int wm8350_dcdc_set_suspend_enable(struct regulator_dev *rdev)
 406 {
 407         struct wm8350 *wm8350 = rdev_get_drvdata(rdev);
 408         int dcdc = rdev_get_id(rdev);
 409         u16 val;
 410
 411         switch (dcdc) {
 412         case WM8350_DCDC_1:
 413                 val = wm8350_reg_read(wm8350, WM8350_DCDC1_LOW_POWER)
 414                         & ~WM8350_DCDC_HIB_MODE_MASK;
 415                 wm8350_reg_write(wm8350, WM8350_DCDC1_LOW_POWER,
 416                         val | wm8350->pmic.dcdc1_hib_mode);
 417                 break;
 418         case WM8350_DCDC_3:
 419                 val = wm8350_reg_read(wm8350, WM8350_DCDC3_LOW_POWER)
 420                         & ~WM8350_DCDC_HIB_MODE_MASK;
 421                 wm8350_reg_write(wm8350, WM8350_DCDC3_LOW_POWER,
 422                         val | wm8350->pmic.dcdc3_hib_mode);
 423                 break;
 424         case WM8350_DCDC_4:
 425                 val = wm8350_reg_read(wm8350, WM8350_DCDC4_LOW_POWER)
 426                         & ~WM8350_DCDC_HIB_MODE_MASK;
 427                 wm8350_reg_write(wm8350, WM8350_DCDC4_LOW_POWER,
 428                         val | wm8350->pmic.dcdc4_hib_mode);
 429                 break;
 430         case WM8350_DCDC_6:
 431                 val = wm8350_reg_read(wm8350, WM8350_DCDC6_LOW_POWER)
 432                         & ~WM8350_DCDC_HIB_MODE_MASK;
 433                 wm8350_reg_write(wm8350, WM8350_DCDC6_LOW_POWER,
 434                         val | wm8350->pmic.dcdc6_hib_mode);
 435                 break;
 436         case WM8350_DCDC_2:
 437         case WM8350_DCDC_5:
 438         default:
 439                 return -EINVAL;
 440         }
 441
 442         return 0;
 443 }
 444
 445 static int wm8350_dcdc_set_suspend_disable(struct regulator_dev *rdev)
 446 {
 447         struct wm8350 *wm8350 = rdev_get_drvdata(rdev);
 448         int dcdc = rdev_get_id(rdev);
 449         u16 val;
 450
 451         switch (dcdc) {
 452         case WM8350_DCDC_1:
 453                 val = wm8350_reg_read(wm8350, WM8350_DCDC1_LOW_POWER);
 454                 wm8350->pmic.dcdc1_hib_mode = val & WM8350_DCDC_HIB_MODE_MASK;
 455                 wm8350_reg_write(wm8350, WM8350_DCDC1_LOW_POWER,
 456                                  val | WM8350_DCDC_HIB_MODE_DIS);
 457                 break;
 458         case WM8350_DCDC_3:
 459                 val = wm8350_reg_read(wm8350, WM8350_DCDC3_LOW_POWER);
 460                 wm8350->pmic.dcdc3_hib_mode = val & WM8350_DCDC_HIB_MODE_MASK;
 461                 wm8350_reg_write(wm8350, WM8350_DCDC3_LOW_POWER,
 462                                  val | WM8350_DCDC_HIB_MODE_DIS);
 463                 break;
 464         case WM8350_DCDC_4:
 465                 val = wm8350_reg_read(wm8350, WM8350_DCDC4_LOW_POWER);
 466                 wm8350->pmic.dcdc4_hib_mode = val & WM8350_DCDC_HIB_MODE_MASK;
 467                 wm8350_reg_write(wm8350, WM8350_DCDC4_LOW_POWER,
 468                                  val | WM8350_DCDC_HIB_MODE_DIS);
 469                 break;
 470         case WM8350_DCDC_6:
 471                 val = wm8350_reg_read(wm8350, WM8350_DCDC6_LOW_POWER);
 472                 wm8350->pmic.dcdc6_hib_mode = val & WM8350_DCDC_HIB_MODE_MASK;
 473                 wm8350_reg_write(wm8350, WM8350_DCDC6_LOW_POWER,
 474                                  val | WM8350_DCDC_HIB_MODE_DIS);
 475                 break;
 476         case WM8350_DCDC_2:
 477         case WM8350_DCDC_5:
 478         default:
 479                 return -EINVAL;
 480         }
 481
 482         return 0;
 483 }
 484
 485 static int wm8350_dcdc25_set_suspend_enable(struct regulator_dev *rdev)
 486 {
 487         struct wm8350 *wm8350 = rdev_get_drvdata(rdev);
 488         int dcdc = rdev_get_id(rdev);
 489         u16 val;
 490
 491         switch (dcdc) {
 492         case WM8350_DCDC_2:
 493                 val = wm8350_reg_read(wm8350, WM8350_DCDC2_CONTROL)
 494                     & ~WM8350_DC2_HIB_MODE_MASK;
 495                 wm8350_reg_write(wm8350, WM8350_DCDC2_CONTROL, val |
 496                     (WM8350_DC2_HIB_MODE_ACTIVE << WM8350_DC2_HIB_MODE_SHIFT));
 497                 break;
 498         case WM8350_DCDC_5:
 499                 val = wm8350_reg_read(wm8350, WM8350_DCDC5_CONTROL)
 500                     & ~WM8350_DC5_HIB_MODE_MASK;
 501                 wm8350_reg_write(wm8350, WM8350_DCDC5_CONTROL, val |
 502                     (WM8350_DC5_HIB_MODE_ACTIVE << WM8350_DC5_HIB_MODE_SHIFT));
 503                 break;
 504         default:
 505                 return -EINVAL;
 506         }
 507         return 0;
 508 }
 509
 510 static int wm8350_dcdc25_set_suspend_disable(struct regulator_dev *rdev)
 511 {
 512         struct wm8350 *wm8350 = rdev_get_drvdata(rdev);
 513         int dcdc = rdev_get_id(rdev);
 514         u16 val;
 515
 516         switch (dcdc) {
 517         case WM8350_DCDC_2:
 518                 val = wm8350_reg_read(wm8350, WM8350_DCDC2_CONTROL)
 519                     & ~WM8350_DC2_HIB_MODE_MASK;
 520                 wm8350_reg_write(wm8350, WM8350_DCDC2_CONTROL, val |
 521                     (WM8350_DC2_HIB_MODE_DISABLE << WM8350_DC2_HIB_MODE_SHIFT));
 522                 break;
 523         case WM8350_DCDC_5:
 524                 val = wm8350_reg_read(wm8350, WM8350_DCDC5_CONTROL)
 525                     & ~WM8350_DC5_HIB_MODE_MASK;
 526                 wm8350_reg_write(wm8350, WM8350_DCDC5_CONTROL, val |
 527                     (WM8350_DC5_HIB_MODE_DISABLE << WM8350_DC5_HIB_MODE_SHIFT));
 528                 break;
 529         default:
 530                 return -EINVAL;
 531         }
 532         return 0;
 533 }
 534
 535 static int wm8350_dcdc_set_suspend_mode(struct regulator_dev *rdev,
 536         unsigned int mode)
 537 {
 538         struct wm8350 *wm8350 = rdev_get_drvdata(rdev);
 539         int dcdc = rdev_get_id(rdev);
 540         u16 *hib_mode;
 541
 542         switch (dcdc) {
 543         case WM8350_DCDC_1:
 544                 hib_mode = &wm8350->pmic.dcdc1_hib_mode;
 545                 break;
 546         case WM8350_DCDC_3:
 547                 hib_mode = &wm8350->pmic.dcdc3_hib_mode;
 548                 break;
 549         case WM8350_DCDC_4:
 550                 hib_mode = &wm8350->pmic.dcdc4_hib_mode;
 551                 break;
 552         case WM8350_DCDC_6:
 553                 hib_mode = &wm8350->pmic.dcdc6_hib_mode;
 554                 break;
 555         case WM8350_DCDC_2:
 556         case WM8350_DCDC_5:
 557         default:
 558                 return -EINVAL;
 559         }
 560
 561         switch (mode) {
 562         case REGULATOR_MODE_NORMAL:
 563                 *hib_mode = WM8350_DCDC_HIB_MODE_IMAGE;
 564                 break;
 565         case REGULATOR_MODE_IDLE:
 566                 *hib_mode = WM8350_DCDC_HIB_MODE_STANDBY;
 567                 break;
 568         case REGULATOR_MODE_STANDBY:
 569                 *hib_mode = WM8350_DCDC_HIB_MODE_LDO_IM;
 570                 break;
 571         default:
 572                 return -EINVAL;
 573         }
 574
 575         return 0;
 576 }
 577
 578 static int wm8350_ldo_set_suspend_voltage(struct regulator_dev *rdev, int uV)
 579 {
 580         struct wm8350 *wm8350 = rdev_get_drvdata(rdev);
 581         int volt_reg, mV = uV / 1000, ldo = rdev_get_id(rdev);
 582         u16 val;
 583
 584         dev_dbg(wm8350->dev, "%s %d mV %d\n", __func__, ldo, mV);
 585
 586         if (mV < 900 || mV > 3300) {
 587                 dev_err(wm8350->dev, "LDO%d voltage %d mV out of range\n",
 588                         ldo, mV);
 589                 return -EINVAL;
 590         }
 591
 592         switch (ldo) {
 593         case WM8350_LDO_1:
 594                 volt_reg = WM8350_LDO1_LOW_POWER;
 595                 break;
 596         case WM8350_LDO_2:
 597                 volt_reg = WM8350_LDO2_LOW_POWER;
 598                 break;
 599         case WM8350_LDO_3:
 600                 volt_reg = WM8350_LDO3_LOW_POWER;
 601                 break;
 602         case WM8350_LDO_4:
 603                 volt_reg = WM8350_LDO4_LOW_POWER;
 604                 break;
 605         default:
 606                 return -EINVAL;
 607         }
 608
 609         /* all LDOs have same mV bits */
 610         val = wm8350_reg_read(wm8350, volt_reg) & ~WM8350_LDO1_VSEL_MASK;
 611         wm8350_reg_write(wm8350, volt_reg,
 612                          val | wm8350_ldo_mvolts_to_val(mV));
 613         return 0;
 614 }
 615
 616 static int wm8350_ldo_set_suspend_enable(struct regulator_dev *rdev)
 617 {
 618         struct wm8350 *wm8350 = rdev_get_drvdata(rdev);
 619         int volt_reg, ldo = rdev_get_id(rdev);
 620         u16 val;
 621
 622         switch (ldo) {
 623         case WM8350_LDO_1:
 624                 volt_reg = WM8350_LDO1_LOW_POWER;
 625                 break;
 626         case WM8350_LDO_2:
 627                 volt_reg = WM8350_LDO2_LOW_POWER;
 628                 break;
 629         case WM8350_LDO_3:
 630                 volt_reg = WM8350_LDO3_LOW_POWER;
 631                 break;
 632         case WM8350_LDO_4:
 633                 volt_reg = WM8350_LDO4_LOW_POWER;
 634                 break;
 635         default:
 636                 return -EINVAL;
 637         }
 638
 639         /* all LDOs have same mV bits */
 640         val = wm8350_reg_read(wm8350, volt_reg) & ~WM8350_LDO1_HIB_MODE_MASK;
 641         wm8350_reg_write(wm8350, volt_reg, val);
 642         return 0;
 643 }
 644
 645 static int wm8350_ldo_set_suspend_disable(struct regulator_dev *rdev)
 646 {
 647         struct wm8350 *wm8350 = rdev_get_drvdata(rdev);
 648         int volt_reg, ldo = rdev_get_id(rdev);
 649         u16 val;
 650
 651         switch (ldo) {
 652         case WM8350_LDO_1:
 653                 volt_reg = WM8350_LDO1_LOW_POWER;
 654                 break;
 655         case WM8350_LDO_2:
 656                 volt_reg = WM8350_LDO2_LOW_POWER;
 657                 break;
 658         case WM8350_LDO_3:
 659                 volt_reg = WM8350_LDO3_LOW_POWER;
 660                 break;
 661         case WM8350_LDO_4:
 662                 volt_reg = WM8350_LDO4_LOW_POWER;
 663                 break;
 664         default:
 665                 return -EINVAL;
 666         }
 667
 668         /* all LDOs have same mV bits */
 669         val = wm8350_reg_read(wm8350, volt_reg) & ~WM8350_LDO1_HIB_MODE_MASK;
 670         wm8350_reg_write(wm8350, volt_reg, val | WM8350_LDO1_HIB_MODE_DIS);
 671         return 0;
 672 }
 673
 674 static int wm8350_ldo_map_voltage(struct regulator_dev *rdev, int min_uV,
 675                                   int max_uV)
 676 {
 677         int mV;
 678         int min_mV = min_uV / 1000;
 679         int max_mV = max_uV / 1000;
 680
 681         if (min_mV < 900 || min_mV > 3300)
 682                 return -EINVAL;
 683         if (max_mV < 900 || max_mV > 3300)
 684                 return -EINVAL;
 685
 686         if (min_mV < 1800) {
 687                 /* step size is 50mV < 1800mV */
 688                 mV = (min_mV - 851) / 50;
 689                 if (wm8350_ldo_val_to_mvolts(mV) > max_mV)
 690                         return -EINVAL;
 691                 BUG_ON(wm8350_ldo_val_to_mvolts(mV) < min_mV);
 692         } else {
 693                 /* step size is 100mV > 1800mV */
 694                 mV = ((min_mV - 1701) / 100) + 16;
 695                 if (wm8350_ldo_val_to_mvolts(mV) > max_mV)
 696                         return -EINVAL;
 697                 BUG_ON(wm8350_ldo_val_to_mvolts(mV) < min_mV);
 698         }
 699
 700         return mV;
 701 }
 702
 703 static int wm8350_ldo_list_voltage(struct regulator_dev *rdev,
 704                                     unsigned selector)
 705 {
 706         if (selector > WM8350_LDO1_VSEL_MASK)
 707                 return -EINVAL;
 708         return wm8350_ldo_val_to_mvolts(selector) * 1000;
 709 }
 710
 711 int wm8350_dcdc_set_slot(struct wm8350 *wm8350, int dcdc, u16 start,
 712                          u16 stop, u16 fault)
 713 {
 714         int slot_reg;
 715         u16 val;
 716
 717         dev_dbg(wm8350->dev, "%s %d start %d stop %d\n",
 718                 __func__, dcdc, start, stop);
 719
 720         /* slot valid ? */
 721         if (start > 15 || stop > 15)
 722                 return -EINVAL;
 723
 724         switch (dcdc) {
 725         case WM8350_DCDC_1:
 726                 slot_reg = WM8350_DCDC1_TIMEOUTS;
 727                 break;
 728         case WM8350_DCDC_2:
 729                 slot_reg = WM8350_DCDC2_TIMEOUTS;
 730                 break;
 731         case WM8350_DCDC_3:
 732                 slot_reg = WM8350_DCDC3_TIMEOUTS;
 733                 break;
 734         case WM8350_DCDC_4:
 735                 slot_reg = WM8350_DCDC4_TIMEOUTS;
 736                 break;
 737         case WM8350_DCDC_5:
 738                 slot_reg = WM8350_DCDC5_TIMEOUTS;
 739                 break;
 740         case WM8350_DCDC_6:
 741                 slot_reg = WM8350_DCDC6_TIMEOUTS;
 742                 break;
 743         default:
 744                 return -EINVAL;
 745         }
 746
 747         val = wm8350_reg_read(wm8350, slot_reg) &
 748             ~(WM8350_DC1_ENSLOT_MASK | WM8350_DC1_SDSLOT_MASK |
 749               WM8350_DC1_ERRACT_MASK);
 750         wm8350_reg_write(wm8350, slot_reg,
 751                          val | (start << WM8350_DC1_ENSLOT_SHIFT) |
 752                          (stop << WM8350_DC1_SDSLOT_SHIFT) |
 753                          (fault << WM8350_DC1_ERRACT_SHIFT));
 754
 755         return 0;
 756 }
 757 EXPORT_SYMBOL_GPL(wm8350_dcdc_set_slot);
 758
 759 int wm8350_ldo_set_slot(struct wm8350 *wm8350, int ldo, u16 start, u16 stop)
 760 {
 761         int slot_reg;
 762         u16 val;
 763
 764         dev_dbg(wm8350->dev, "%s %d start %d stop %d\n",
 765                 __func__, ldo, start, stop);
 766
 767         /* slot valid ? */
 768         if (start > 15 || stop > 15)
 769                 return -EINVAL;
 770
 771         switch (ldo) {
 772         case WM8350_LDO_1:
 773                 slot_reg = WM8350_LDO1_TIMEOUTS;
 774                 break;
 775         case WM8350_LDO_2:
 776                 slot_reg = WM8350_LDO2_TIMEOUTS;
 777                 break;
 778         case WM8350_LDO_3:
 779                 slot_reg = WM8350_LDO3_TIMEOUTS;
 780                 break;
 781         case WM8350_LDO_4:
 782                 slot_reg = WM8350_LDO4_TIMEOUTS;
 783                 break;
 784         default:
 785                 return -EINVAL;
 786         }
 787
 788         val = wm8350_reg_read(wm8350, slot_reg) & ~WM8350_LDO1_SDSLOT_MASK;
 789         wm8350_reg_write(wm8350, slot_reg, val | ((start << 10) | (stop << 6)));
 790         return 0;
 791 }
 792 EXPORT_SYMBOL_GPL(wm8350_ldo_set_slot);
 793
 794 int wm8350_dcdc25_set_mode(struct wm8350 *wm8350, int dcdc, u16 mode,
 795                            u16 ilim, u16 ramp, u16 feedback)
 796 {
 797         u16 val;
 798
 799         dev_dbg(wm8350->dev, "%s %d mode: %s %s\n", __func__, dcdc,
 800                 mode ? "normal" : "boost", ilim ? "low" : "normal");
 801
 802         switch (dcdc) {
 803         case WM8350_DCDC_2:
 804                 val = wm8350_reg_read(wm8350, WM8350_DCDC2_CONTROL)
 805                     & ~(WM8350_DC2_MODE_MASK | WM8350_DC2_ILIM_MASK |
 806                         WM8350_DC2_RMP_MASK | WM8350_DC2_FBSRC_MASK);
 807                 wm8350_reg_write(wm8350, WM8350_DCDC2_CONTROL, val |
 808                                  (mode << WM8350_DC2_MODE_SHIFT) |
 809                                  (ilim << WM8350_DC2_ILIM_SHIFT) |
 810                                  (ramp << WM8350_DC2_RMP_SHIFT) |
 811                                  (feedback << WM8350_DC2_FBSRC_SHIFT));
 812                 break;
 813         case WM8350_DCDC_5:
 814                 val = wm8350_reg_read(wm8350, WM8350_DCDC5_CONTROL)
 815                     & ~(WM8350_DC5_MODE_MASK | WM8350_DC5_ILIM_MASK |
 816                         WM8350_DC5_RMP_MASK | WM8350_DC5_FBSRC_MASK);
 817                 wm8350_reg_write(wm8350, WM8350_DCDC5_CONTROL, val |
 818                                  (mode << WM8350_DC5_MODE_SHIFT) |
 819                                  (ilim << WM8350_DC5_ILIM_SHIFT) |
 820                                  (ramp << WM8350_DC5_RMP_SHIFT) |
 821                                  (feedback << WM8350_DC5_FBSRC_SHIFT));
 822                 break;
 823         default:
 824                 return -EINVAL;
 825         }
 826
 827         return 0;
 828 }
 829 EXPORT_SYMBOL_GPL(wm8350_dcdc25_set_mode);
 830
 831 static int force_continuous_enable(struct wm8350 *wm8350, int dcdc, int enable)
 832 {
 833         int reg = 0, ret;
 834
 835         switch (dcdc) {
 836         case WM8350_DCDC_1:
 837                 reg = WM8350_DCDC1_FORCE_PWM;
 838                 break;
 839         case WM8350_DCDC_3:
 840                 reg = WM8350_DCDC3_FORCE_PWM;
 841                 break;
 842         case WM8350_DCDC_4:
 843                 reg = WM8350_DCDC4_FORCE_PWM;
 844                 break;
 845         case WM8350_DCDC_6:
 846                 reg = WM8350_DCDC6_FORCE_PWM;
 847                 break;
 848         default:
 849                 return -EINVAL;
 850         }
 851
 852         if (enable)
 853                 ret = wm8350_set_bits(wm8350, reg,
 854                         WM8350_DCDC1_FORCE_PWM_ENA);
 855         else
 856                 ret = wm8350_clear_bits(wm8350, reg,
 857                         WM8350_DCDC1_FORCE_PWM_ENA);
 858         return ret;
 859 }
 860
 861 static int wm8350_dcdc_set_mode(struct regulator_dev *rdev, unsigned int mode)
 862 {
 863         struct wm8350 *wm8350 = rdev_get_drvdata(rdev);
 864         int dcdc = rdev_get_id(rdev);
 865         u16 val;
 866
 867         if (dcdc < WM8350_DCDC_1 || dcdc > WM8350_DCDC_6)
 868                 return -EINVAL;
 869
 870         if (dcdc == WM8350_DCDC_2 || dcdc == WM8350_DCDC_5)
 871                 return -EINVAL;
 872
 873         val = 1 << (dcdc - WM8350_DCDC_1);
 874
 875         switch (mode) {
 876         case REGULATOR_MODE_FAST:
 877                 /* force continuous mode */
 878                 wm8350_set_bits(wm8350, WM8350_DCDC_ACTIVE_OPTIONS, val);
 879                 wm8350_clear_bits(wm8350, WM8350_DCDC_SLEEP_OPTIONS, val);
 880                 force_continuous_enable(wm8350, dcdc, 1);
 881                 break;
 882         case REGULATOR_MODE_NORMAL:
 883                 /* active / pulse skipping */
 884                 wm8350_set_bits(wm8350, WM8350_DCDC_ACTIVE_OPTIONS, val);
 885                 wm8350_clear_bits(wm8350, WM8350_DCDC_SLEEP_OPTIONS, val);
 886                 force_continuous_enable(wm8350, dcdc, 0);
 887                 break;
 888         case REGULATOR_MODE_IDLE:
 889                 /* standby mode */
 890                 force_continuous_enable(wm8350, dcdc, 0);
 891                 wm8350_clear_bits(wm8350, WM8350_DCDC_SLEEP_OPTIONS, val);
 892                 wm8350_clear_bits(wm8350, WM8350_DCDC_ACTIVE_OPTIONS, val);
 893                 break;
 894         case REGULATOR_MODE_STANDBY:
 895                 /* LDO mode */
 896                 force_continuous_enable(wm8350, dcdc, 0);
 897                 wm8350_set_bits(wm8350, WM8350_DCDC_SLEEP_OPTIONS, val);
 898                 break;
 899         }
 900
 901         return 0;
 902 }
 903
 904 static unsigned int wm8350_dcdc_get_mode(struct regulator_dev *rdev)
 905 {
 906         struct wm8350 *wm8350 = rdev_get_drvdata(rdev);
 907         int dcdc = rdev_get_id(rdev);
 908         u16 mask, sleep, active, force;
 909         int mode = REGULATOR_MODE_NORMAL;
 910         int reg;
 911
 912         switch (dcdc) {
 913         case WM8350_DCDC_1:
 914                 reg = WM8350_DCDC1_FORCE_PWM;
 915                 break;
 916         case WM8350_DCDC_3:
 917                 reg = WM8350_DCDC3_FORCE_PWM;
 918                 break;
 919         case WM8350_DCDC_4:
 920                 reg = WM8350_DCDC4_FORCE_PWM;
 921                 break;
 922         case WM8350_DCDC_6:
 923                 reg = WM8350_DCDC6_FORCE_PWM;
 924                 break;
 925         default:
 926                 return -EINVAL;
 927         }
 928
 929         mask = 1 << (dcdc - WM8350_DCDC_1);
 930         active = wm8350_reg_read(wm8350, WM8350_DCDC_ACTIVE_OPTIONS) & mask;
 931         force = wm8350_reg_read(wm8350, reg) & WM8350_DCDC1_FORCE_PWM_ENA;
 932         sleep = wm8350_reg_read(wm8350, WM8350_DCDC_SLEEP_OPTIONS) & mask;
 933
 934         dev_dbg(wm8350->dev, "mask %x active %x sleep %x force %x",
 935                 mask, active, sleep, force);
 936
 937         if (active && !sleep) {
 938                 if (force)
 939                         mode = REGULATOR_MODE_FAST;
 940                 else
 941                         mode = REGULATOR_MODE_NORMAL;
 942         } else if (!active && !sleep)
 943                 mode = REGULATOR_MODE_IDLE;
 944         else if (sleep)
 945                 mode = REGULATOR_MODE_STANDBY;
 946
 947         return mode;
 948 }
 949
 950 static unsigned int wm8350_ldo_get_mode(struct regulator_dev *rdev)
 951 {
 952         return REGULATOR_MODE_NORMAL;
 953 }
 954
 955 struct wm8350_dcdc_efficiency {
 956         int uA_load_min;
 957         int uA_load_max;
 958         unsigned int mode;
 959 };
 960
 961 static const struct wm8350_dcdc_efficiency dcdc1_6_efficiency[] = {
 962         {0, 10000, REGULATOR_MODE_STANDBY},       /* 0 - 10mA - LDO */
 963         {10000, 100000, REGULATOR_MODE_IDLE},     /* 10mA - 100mA - Standby */
 964         {100000, 1000000, REGULATOR_MODE_NORMAL}, /* > 100mA - Active */
 965         {-1, -1, REGULATOR_MODE_NORMAL},
 966 };
 967
 968 static const struct wm8350_dcdc_efficiency dcdc3_4_efficiency[] = {
 969         {0, 10000, REGULATOR_MODE_STANDBY},      /* 0 - 10mA - LDO */
 970         {10000, 100000, REGULATOR_MODE_IDLE},    /* 10mA - 100mA - Standby */
 971         {100000, 800000, REGULATOR_MODE_NORMAL}, /* > 100mA - Active */
 972         {-1, -1, REGULATOR_MODE_NORMAL},
 973 };
 974
 975 static unsigned int get_mode(int uA, const struct wm8350_dcdc_efficiency *eff)
 976 {
 977         int i = 0;
 978
 979         while (eff[i].uA_load_min != -1) {
 980                 if (uA >= eff[i].uA_load_min && uA <= eff[i].uA_load_max)
 981                         return eff[i].mode;
 982         }
 983         return REGULATOR_MODE_NORMAL;
 984 }
 985
 986 /* Query the regulator for it's most efficient mode @ uV,uA
 987  * WM8350 regulator efficiency is pretty similar over
 988  * different input and output uV.
 989  */
 990 static unsigned int wm8350_dcdc_get_optimum_mode(struct regulator_dev *rdev,
 991                                                  int input_uV, int output_uV,
 992                                                  int output_uA)
 993 {
 994         int dcdc = rdev_get_id(rdev), mode;
 995
 996         switch (dcdc) {
 997         case WM8350_DCDC_1:
 998         case WM8350_DCDC_6:
 999                 mode = get_mode(output_uA, dcdc1_6_efficiency);
1000                 break;
1001         case WM8350_DCDC_3:
1002         case WM8350_DCDC_4:
1003                 mode = get_mode(output_uA, dcdc3_4_efficiency);
1004                 break;
1005         default:
1006                 mode = REGULATOR_MODE_NORMAL;
1007                 break;
1008         }
1009         return mode;
1010 }
1011
1012 static struct regulator_ops wm8350_dcdc_ops = {
1013         .set_voltage_sel = regulator_set_voltage_sel_regmap,
1014         .get_voltage_sel = regulator_get_voltage_sel_regmap,
1015         .list_voltage = regulator_list_voltage_linear,
1016         .map_voltage = regulator_map_voltage_linear,
1017         .enable = regulator_enable_regmap,
1018         .disable = regulator_disable_regmap,
1019         .is_enabled = regulator_is_enabled_regmap,
1020         .get_mode = wm8350_dcdc_get_mode,
1021         .set_mode = wm8350_dcdc_set_mode,
1022         .get_optimum_mode = wm8350_dcdc_get_optimum_mode,
1023         .set_suspend_voltage = wm8350_dcdc_set_suspend_voltage,
1024         .set_suspend_enable = wm8350_dcdc_set_suspend_enable,
1025         .set_suspend_disable = wm8350_dcdc_set_suspend_disable,
1026         .set_suspend_mode = wm8350_dcdc_set_suspend_mode,
1027 };
1028
1029 static struct regulator_ops wm8350_dcdc2_5_ops = {
1030         .enable = regulator_enable_regmap,
1031         .disable = regulator_disable_regmap,
1032         .is_enabled = regulator_is_enabled_regmap,
1033         .set_suspend_enable = wm8350_dcdc25_set_suspend_enable,
1034         .set_suspend_disable = wm8350_dcdc25_set_suspend_disable,
1035 };
1036
1037 static struct regulator_ops wm8350_ldo_ops = {
1038         .map_voltage = wm8350_ldo_map_voltage,
1039         .set_voltage_sel = regulator_set_voltage_sel_regmap,
1040         .get_voltage_sel = regulator_get_voltage_sel_regmap,
1041         .list_voltage = wm8350_ldo_list_voltage,
1042         .enable = regulator_enable_regmap,
1043         .disable = regulator_disable_regmap,
1044         .is_enabled = regulator_is_enabled_regmap,
1045         .get_mode = wm8350_ldo_get_mode,
1046         .set_suspend_voltage = wm8350_ldo_set_suspend_voltage,
1047         .set_suspend_enable = wm8350_ldo_set_suspend_enable,
1048         .set_suspend_disable = wm8350_ldo_set_suspend_disable,
1049 };
1050
1051 static struct regulator_ops wm8350_isink_ops = {
1052         .set_current_limit = wm8350_isink_set_current,
1053         .get_current_limit = wm8350_isink_get_current,
1054         .enable = wm8350_isink_enable,
1055         .disable = wm8350_isink_disable,
1056         .is_enabled = wm8350_isink_is_enabled,
1057         .enable_time = wm8350_isink_enable_time,
1058 };
1059
1060 static const struct regulator_desc wm8350_reg[NUM_WM8350_REGULATORS] = {
1061         {
1062                 .name = "DCDC1",
1063                 .id = WM8350_DCDC_1,
1064                 .ops = &wm8350_dcdc_ops,
1065                 .irq = WM8350_IRQ_UV_DC1,
1066                 .type = REGULATOR_VOLTAGE,
1067                 .n_voltages = WM8350_DCDC_MAX_VSEL + 1,
1068                 .min_uV = 850000,
1069                 .uV_step = 25000,
1070                 .vsel_reg = WM8350_DCDC1_CONTROL,
1071                 .vsel_mask = WM8350_DC1_VSEL_MASK,
1072                 .enable_reg = WM8350_DCDC_LDO_REQUESTED,
1073                 .enable_mask = WM8350_DC1_ENA,
1074                 .owner = THIS_MODULE,
1075         },
1076         {
1077                 .name = "DCDC2",
1078                 .id = WM8350_DCDC_2,
1079                 .ops = &wm8350_dcdc2_5_ops,
1080                 .irq = WM8350_IRQ_UV_DC2,
1081                 .type = REGULATOR_VOLTAGE,
1082                 .enable_reg = WM8350_DCDC_LDO_REQUESTED,
1083                 .enable_mask = WM8350_DC2_ENA,
1084                 .owner = THIS_MODULE,
1085         },
1086         {
1087                 .name = "DCDC3",
1088                 .id = WM8350_DCDC_3,
1089                 .ops = &wm8350_dcdc_ops,
1090                 .irq = WM8350_IRQ_UV_DC3,
1091                 .type = REGULATOR_VOLTAGE,
1092                 .n_voltages = WM8350_DCDC_MAX_VSEL + 1,
1093                 .min_uV = 850000,
1094                 .uV_step = 25000,
1095                 .vsel_reg = WM8350_DCDC3_CONTROL,
1096                 .vsel_mask = WM8350_DC3_VSEL_MASK,
1097                 .enable_reg = WM8350_DCDC_LDO_REQUESTED,
1098                 .enable_mask = WM8350_DC3_ENA,
1099                 .owner = THIS_MODULE,
1100         },
1101         {
1102                 .name = "DCDC4",
1103                 .id = WM8350_DCDC_4,
1104                 .ops = &wm8350_dcdc_ops,
1105                 .irq = WM8350_IRQ_UV_DC4,
1106                 .type = REGULATOR_VOLTAGE,
1107                 .n_voltages = WM8350_DCDC_MAX_VSEL + 1,
1108                 .min_uV = 850000,
1109                 .uV_step = 25000,
1110                 .vsel_reg = WM8350_DCDC4_CONTROL,
1111                 .vsel_mask = WM8350_DC4_VSEL_MASK,
1112                 .enable_reg = WM8350_DCDC_LDO_REQUESTED,
1113                 .enable_mask = WM8350_DC4_ENA,
1114                 .owner = THIS_MODULE,
1115         },
1116         {
1117                 .name = "DCDC5",
1118                 .id = WM8350_DCDC_5,
1119                 .ops = &wm8350_dcdc2_5_ops,
1120                 .irq = WM8350_IRQ_UV_DC5,
1121                 .type = REGULATOR_VOLTAGE,
1122                 .enable_reg = WM8350_DCDC_LDO_REQUESTED,
1123                 .enable_mask = WM8350_DC5_ENA,
1124                 .owner = THIS_MODULE,
1125          },
1126         {
1127                 .name = "DCDC6",
1128                 .id = WM8350_DCDC_6,
1129                 .ops = &wm8350_dcdc_ops,
1130                 .irq = WM8350_IRQ_UV_DC6,
1131                 .type = REGULATOR_VOLTAGE,
1132                 .n_voltages = WM8350_DCDC_MAX_VSEL + 1,
1133                 .min_uV = 850000,
1134                 .uV_step = 25000,
1135                 .vsel_reg = WM8350_DCDC6_CONTROL,
1136                 .vsel_mask = WM8350_DC6_VSEL_MASK,
1137                 .enable_reg = WM8350_DCDC_LDO_REQUESTED,
1138                 .enable_mask = WM8350_DC6_ENA,
1139                 .owner = THIS_MODULE,
1140         },
1141         {
1142                 .name = "LDO1",
1143                 .id = WM8350_LDO_1,
1144                 .ops = &wm8350_ldo_ops,
1145                 .irq = WM8350_IRQ_UV_LDO1,
1146                 .type = REGULATOR_VOLTAGE,
1147                 .n_voltages = WM8350_LDO1_VSEL_MASK + 1,
1148                 .vsel_reg = WM8350_LDO1_CONTROL,
1149                 .vsel_mask = WM8350_LDO1_VSEL_MASK,
1150                 .enable_reg = WM8350_DCDC_LDO_REQUESTED,
1151                 .enable_mask = WM8350_LDO1_ENA,
1152                 .owner = THIS_MODULE,
1153         },
1154         {
1155                 .name = "LDO2",
1156                 .id = WM8350_LDO_2,
1157                 .ops = &wm8350_ldo_ops,
1158                 .irq = WM8350_IRQ_UV_LDO2,
1159                 .type = REGULATOR_VOLTAGE,
1160                 .n_voltages = WM8350_LDO2_VSEL_MASK + 1,
1161                 .vsel_reg = WM8350_LDO2_CONTROL,
1162                 .vsel_mask = WM8350_LDO2_VSEL_MASK,
1163                 .enable_reg = WM8350_DCDC_LDO_REQUESTED,
1164                 .enable_mask = WM8350_LDO2_ENA,
1165                 .owner = THIS_MODULE,
1166         },
1167         {
1168                 .name = "LDO3",
1169                 .id = WM8350_LDO_3,
1170                 .ops = &wm8350_ldo_ops,
1171                 .irq = WM8350_IRQ_UV_LDO3,
1172                 .type = REGULATOR_VOLTAGE,
1173                 .n_voltages = WM8350_LDO3_VSEL_MASK + 1,
1174                 .vsel_reg = WM8350_LDO3_CONTROL,
1175                 .vsel_mask = WM8350_LDO3_VSEL_MASK,
1176                 .enable_reg = WM8350_DCDC_LDO_REQUESTED,
1177                 .enable_mask = WM8350_LDO3_ENA,
1178                 .owner = THIS_MODULE,
1179         },
1180         {
1181                 .name = "LDO4",
1182                 .id = WM8350_LDO_4,
1183                 .ops = &wm8350_ldo_ops,
1184                 .irq = WM8350_IRQ_UV_LDO4,
1185                 .type = REGULATOR_VOLTAGE,
1186                 .n_voltages = WM8350_LDO4_VSEL_MASK + 1,
1187                 .vsel_reg = WM8350_LDO4_CONTROL,
1188                 .vsel_mask = WM8350_LDO4_VSEL_MASK,
1189                 .enable_reg = WM8350_DCDC_LDO_REQUESTED,
1190                 .enable_mask = WM8350_LDO4_ENA,
1191                 .owner = THIS_MODULE,
1192         },
1193         {
1194                 .name = "ISINKA",
1195                 .id = WM8350_ISINK_A,
1196                 .ops = &wm8350_isink_ops,
1197                 .irq = WM8350_IRQ_CS1,
1198                 .type = REGULATOR_CURRENT,
1199                 .owner = THIS_MODULE,
1200          },
1201         {
1202                 .name = "ISINKB",
1203                 .id = WM8350_ISINK_B,
1204                 .ops = &wm8350_isink_ops,
1205                 .irq = WM8350_IRQ_CS2,
1206                 .type = REGULATOR_CURRENT,
1207                 .owner = THIS_MODULE,
1208          },
1209 };
1210
1211 static irqreturn_t pmic_uv_handler(int irq, void *data)
1212 {
1213         struct regulator_dev *rdev = (struct regulator_dev *)data;
1214         struct wm8350 *wm8350 = rdev_get_drvdata(rdev);
1215
1216         mutex_lock(&rdev->mutex);
1217         if (irq == WM8350_IRQ_CS1 || irq == WM8350_IRQ_CS2)
1218                 regulator_notifier_call_chain(rdev,
1219                                               REGULATOR_EVENT_REGULATION_OUT,
1220                                               wm8350);
1221         else
1222                 regulator_notifier_call_chain(rdev,
1223                                               REGULATOR_EVENT_UNDER_VOLTAGE,
1224                                               wm8350);
1225         mutex_unlock(&rdev->mutex);
1226
1227         return IRQ_HANDLED;
1228 }
1229
1230 static int wm8350_regulator_probe(struct platform_device *pdev)
1231 {
1232         struct wm8350 *wm8350 = dev_get_drvdata(&pdev->dev);
1233         struct regulator_config config = { };
1234         struct regulator_dev *rdev;
1235         int ret;
1236         u16 val;
1237
1238         if (pdev->id < WM8350_DCDC_1 || pdev->id > WM8350_ISINK_B)
1239                 return -ENODEV;
1240
1241         /* do any regulatior specific init */
1242         switch (pdev->id) {
1243         case WM8350_DCDC_1:
1244                 val = wm8350_reg_read(wm8350, WM8350_DCDC1_LOW_POWER);
1245                 wm8350->pmic.dcdc1_hib_mode = val & WM8350_DCDC_HIB_MODE_MASK;
1246                 break;
1247         case WM8350_DCDC_3:
1248                 val = wm8350_reg_read(wm8350, WM8350_DCDC3_LOW_POWER);
1249                 wm8350->pmic.dcdc3_hib_mode = val & WM8350_DCDC_HIB_MODE_MASK;
1250                 break;
1251         case WM8350_DCDC_4:
1252                 val = wm8350_reg_read(wm8350, WM8350_DCDC4_LOW_POWER);
1253                 wm8350->pmic.dcdc4_hib_mode = val & WM8350_DCDC_HIB_MODE_MASK;
1254                 break;
1255         case WM8350_DCDC_6:
1256                 val = wm8350_reg_read(wm8350, WM8350_DCDC6_LOW_POWER);
1257                 wm8350->pmic.dcdc6_hib_mode = val & WM8350_DCDC_HIB_MODE_MASK;
1258                 break;
1259         }
1260
1261         config.dev = &pdev->dev;
1262         config.init_data = pdev->dev.platform_data;
1263         config.driver_data = dev_get_drvdata(&pdev->dev);
1264         config.regmap = wm8350->regmap;
1265
1266         /* register regulator */
1267         rdev = regulator_register(&wm8350_reg[pdev->id], &config);
1268         if (IS_ERR(rdev)) {
1269                 dev_err(&pdev->dev, "failed to register %s\n",
1270                         wm8350_reg[pdev->id].name);
1271                 return PTR_ERR(rdev);
1272         }
1273
1274         /* register regulator IRQ */
1275         ret = wm8350_register_irq(wm8350, wm8350_reg[pdev->id].irq,
1276                                   pmic_uv_handler, 0, "UV", rdev);
1277         if (ret < 0) {
1278                 regulator_unregister(rdev);
1279                 dev_err(&pdev->dev, "failed to register regulator %s IRQ\n",
1280                         wm8350_reg[pdev->id].name);
1281                 return ret;
1282         }
1283
1284         return 0;
1285 }
1286
1287 static int wm8350_regulator_remove(struct platform_device *pdev)
1288 {
1289         struct regulator_dev *rdev = platform_get_drvdata(pdev);
1290         struct wm8350 *wm8350 = rdev_get_drvdata(rdev);
1291
1292         wm8350_free_irq(wm8350, wm8350_reg[pdev->id].irq, rdev);
1293
1294         regulator_unregister(rdev);
1295
1296         return 0;
1297 }
1298
1299 int wm8350_register_regulator(struct wm8350 *wm8350, int reg,
1300                               struct regulator_init_data *initdata)
1301 {
1302         struct platform_device *pdev;
1303         int ret;
1304         if (reg < 0 || reg >= NUM_WM8350_REGULATORS)
1305                 return -EINVAL;
1306
1307         if (wm8350->pmic.pdev[reg])
1308                 return -EBUSY;
1309
1310         if (reg >= WM8350_DCDC_1 && reg <= WM8350_DCDC_6 &&
1311             reg > wm8350->pmic.max_dcdc)
1312                 return -ENODEV;
1313         if (reg >= WM8350_ISINK_A && reg <= WM8350_ISINK_B &&
1314             reg > wm8350->pmic.max_isink)
1315                 return -ENODEV;
1316
1317         pdev = platform_device_alloc("wm8350-regulator", reg);
1318         if (!pdev)
1319                 return -ENOMEM;
1320
1321         wm8350->pmic.pdev[reg] = pdev;
1322
1323         initdata->driver_data = wm8350;
1324
1325         pdev->dev.platform_data = initdata;
1326         pdev->dev.parent = wm8350->dev;
1327         platform_set_drvdata(pdev, wm8350);
1328
1329         ret = platform_device_add(pdev);
1330
1331         if (ret != 0) {
1332                 dev_err(wm8350->dev, "Failed to register regulator %d: %d\n",
1333                         reg, ret);
1334                 platform_device_put(pdev);
1335                 wm8350->pmic.pdev[reg] = NULL;
1336         }
1337
1338         return ret;
1339 }
1340 EXPORT_SYMBOL_GPL(wm8350_register_regulator);
1341
1342 /**
1343  * wm8350_register_led - Register a WM8350 LED output
1344  *
1345  * @param wm8350 The WM8350 device to configure.
1346  * @param lednum LED device index to create.
1347  * @param dcdc The DCDC to use for the LED.
1348  * @param isink The ISINK to use for the LED.
1349  * @param pdata Configuration for the LED.
1350  *
1351  * The WM8350 supports the use of an ISINK together with a DCDC to
1352  * provide a power-efficient LED driver.  This function registers the
1353  * regulators and instantiates the platform device for a LED.  The
1354  * operating modes for the LED regulators must be configured using
1355  * wm8350_isink_set_flash(), wm8350_dcdc25_set_mode() and
1356  * wm8350_dcdc_set_slot() prior to calling this function.
1357  */
1358 int wm8350_register_led(struct wm8350 *wm8350, int lednum, int dcdc, int isink,
1359                         struct wm8350_led_platform_data *pdata)
1360 {
1361         struct wm8350_led *led;
1362         struct platform_device *pdev;
1363         int ret;
1364
1365         if (lednum >= ARRAY_SIZE(wm8350->pmic.led) || lednum < 0) {
1366                 dev_err(wm8350->dev, "Invalid LED index %d\n", lednum);
1367                 return -ENODEV;
1368         }
1369
1370         led = &wm8350->pmic.led[lednum];
1371
1372         if (led->pdev) {
1373                 dev_err(wm8350->dev, "LED %d already allocated\n", lednum);
1374                 return -EINVAL;
1375         }
1376
1377         pdev = platform_device_alloc("wm8350-led", lednum);
1378         if (pdev == NULL) {
1379                 dev_err(wm8350->dev, "Failed to allocate LED %d\n", lednum);
1380                 return -ENOMEM;
1381         }
1382
1383         led->isink_consumer.dev_name = dev_name(&pdev->dev);
1384         led->isink_consumer.supply = "led_isink";
1385         led->isink_init.num_consumer_supplies = 1;
1386         led->isink_init.consumer_supplies = &led->isink_consumer;
1387         led->isink_init.constraints.min_uA = 0;
1388         led->isink_init.constraints.max_uA = pdata->max_uA;
1389         led->isink_init.constraints.valid_ops_mask
1390                 = REGULATOR_CHANGE_CURRENT | REGULATOR_CHANGE_STATUS;
1391         led->isink_init.constraints.valid_modes_mask = REGULATOR_MODE_NORMAL;
1392         ret = wm8350_register_regulator(wm8350, isink, &led->isink_init);
1393         if (ret != 0) {
1394                 platform_device_put(pdev);
1395                 return ret;
1396         }
1397
1398         led->dcdc_consumer.dev_name = dev_name(&pdev->dev);
1399         led->dcdc_consumer.supply = "led_vcc";
1400         led->dcdc_init.num_consumer_supplies = 1;
1401         led->dcdc_init.consumer_supplies = &led->dcdc_consumer;
1402         led->dcdc_init.constraints.valid_modes_mask = REGULATOR_MODE_NORMAL;
1403         led->dcdc_init.constraints.valid_ops_mask =  REGULATOR_CHANGE_STATUS;
1404         ret = wm8350_register_regulator(wm8350, dcdc, &led->dcdc_init);
1405         if (ret != 0) {
1406                 platform_device_put(pdev);
1407                 return ret;
1408         }
1409
1410         switch (isink) {
1411         case WM8350_ISINK_A:
1412                 wm8350->pmic.isink_A_dcdc = dcdc;
1413                 break;
1414         case WM8350_ISINK_B:
1415                 wm8350->pmic.isink_B_dcdc = dcdc;
1416                 break;
1417         }
1418
1419         pdev->dev.platform_data = pdata;
1420         pdev->dev.parent = wm8350->dev;
1421         ret = platform_device_add(pdev);
1422         if (ret != 0) {
1423                 dev_err(wm8350->dev, "Failed to register LED %d: %d\n",
1424                         lednum, ret);
1425                 platform_device_put(pdev);
1426                 return ret;
1427         }
1428
1429         led->pdev = pdev;
1430
1431         return 0;
1432 }
1433 EXPORT_SYMBOL_GPL(wm8350_register_led);
1434
1435 static struct platform_driver wm8350_regulator_driver = {
1436         .probe = wm8350_regulator_probe,
1437         .remove = wm8350_regulator_remove,
1438         .driver         = {
1439                 .name   = "wm8350-regulator",
1440         },
1441 };
1442
1443 static int __init wm8350_regulator_init(void)
1444 {
1445         return platform_driver_register(&wm8350_regulator_driver);
1446 }
1447 subsys_initcall(wm8350_regulator_init);
1448
1449 static void __exit wm8350_regulator_exit(void)
1450 {
1451         platform_driver_unregister(&wm8350_regulator_driver);
1452 }
1453 module_exit(wm8350_regulator_exit);
1454
1455 /* Module information */
1456 MODULE_AUTHOR("Liam Girdwood");
1457 MODULE_DESCRIPTION("WM8350 voltage and current regulator driver");
1458 MODULE_LICENSE("GPL");
1459 MODULE_ALIAS("platform:wm8350-regulator");