drivers/regulator/ab8500.c

   1 /*
   2  * Copyright (C) ST-Ericsson SA 2010
   3  *
   4  * License Terms: GNU General Public License v2
   5  *
   6  * Authors: Sundar Iyer <sundar.iyer@stericsson.com> for ST-Ericsson
   7  *          Bengt Jonsson <bengt.g.jonsson@stericsson.com> for ST-Ericsson
   8  *
   9  * AB8500 peripheral regulators
  10  *
  11  * AB8500 supports the following regulators:
  12  *   VAUX1/2/3, VINTCORE, VTVOUT, VUSB, VAUDIO, VAMIC1/2, VDMIC, VANA
  13  */
  14 #include <linux/init.h>
  15 #include <linux/kernel.h>
  16 #include <linux/module.h>
  17 #include <linux/err.h>
  18 #include <linux/platform_device.h>
  19 #include <linux/mfd/abx500.h>
  20 #include <linux/mfd/abx500/ab8500.h>
  21 #include <linux/regulator/driver.h>
  22 #include <linux/regulator/machine.h>
  23 #include <linux/regulator/ab8500.h>
  24
  25 /**
  26  * struct ab8500_regulator_info - ab8500 regulator information
  27  * @dev: device pointer
  28  * @desc: regulator description
  29  * @regulator_dev: regulator device
  30  * @max_uV: maximum voltage (for variable voltage supplies)
  31  * @min_uV: minimum voltage (for variable voltage supplies)
  32  * @fixed_uV: typical voltage (for fixed voltage supplies)
  33  * @update_bank: bank to control on/off
  34  * @update_reg: register to control on/off
  35  * @update_mask: mask to enable/disable regulator
  36  * @update_val_enable: bits to enable the regulator in normal (high power) mode
  37  * @voltage_bank: bank to control regulator voltage
  38  * @voltage_reg: register to control regulator voltage
  39  * @voltage_mask: mask to control regulator voltage
  40  * @voltages: supported voltage table
  41  * @voltages_len: number of supported voltages for the regulator
  42  * @delay: startup/set voltage delay in us
  43  */
  44 struct ab8500_regulator_info {
  45         struct device           *dev;
  46         struct regulator_desc   desc;
  47         struct regulator_dev    *regulator;
  48         int max_uV;
  49         int min_uV;
  50         int fixed_uV;
  51         u8 update_bank;
  52         u8 update_reg;
  53         u8 update_mask;
  54         u8 update_val_enable;
  55         u8 voltage_bank;
  56         u8 voltage_reg;
  57         u8 voltage_mask;
  58         int const *voltages;
  59         int voltages_len;
  60         unsigned int delay;
  61 };
  62
  63 /* voltage tables for the vauxn/vintcore supplies */
  64 static const int ldo_vauxn_voltages[] = {
  65         1100000,
  66         1200000,
  67         1300000,
  68         1400000,
  69         1500000,
  70         1800000,
  71         1850000,
  72         1900000,
  73         2500000,
  74         2650000,
  75         2700000,
  76         2750000,
  77         2800000,
  78         2900000,
  79         3000000,
  80         3300000,
  81 };
  82
  83 static const int ldo_vaux3_voltages[] = {
  84         1200000,
  85         1500000,
  86         1800000,
  87         2100000,
  88         2500000,
  89         2750000,
  90         2790000,
  91         2910000,
  92 };
  93
  94 static const int ldo_vintcore_voltages[] = {
  95         1200000,
  96         1225000,
  97         1250000,
  98         1275000,
  99         1300000,
 100         1325000,
 101         1350000,
 102 };
 103
 104 static int ab8500_regulator_enable(struct regulator_dev *rdev)
 105 {
 106         int ret;
 107         struct ab8500_regulator_info *info = rdev_get_drvdata(rdev);
 108
 109         if (info == NULL) {
 110                 dev_err(rdev_get_dev(rdev), "regulator info null pointer\n");
 111                 return -EINVAL;
 112         }
 113
 114         ret = abx500_mask_and_set_register_interruptible(info->dev,
 115                 info->update_bank, info->update_reg,
 116                 info->update_mask, info->update_val_enable);
 117         if (ret < 0)
 118                 dev_err(rdev_get_dev(rdev),
 119                         "couldn't set enable bits for regulator\n");
 120
 121         dev_vdbg(rdev_get_dev(rdev),
 122                 "%s-enable (bank, reg, mask, value): 0x%x, 0x%x, 0x%x, 0x%x\n",
 123                 info->desc.name, info->update_bank, info->update_reg,
 124                 info->update_mask, info->update_val_enable);
 125
 126         return ret;
 127 }
 128
 129 static int ab8500_regulator_disable(struct regulator_dev *rdev)
 130 {
 131         int ret;
 132         struct ab8500_regulator_info *info = rdev_get_drvdata(rdev);
 133
 134         if (info == NULL) {
 135                 dev_err(rdev_get_dev(rdev), "regulator info null pointer\n");
 136                 return -EINVAL;
 137         }
 138
 139         ret = abx500_mask_and_set_register_interruptible(info->dev,
 140                 info->update_bank, info->update_reg,
 141                 info->update_mask, 0x0);
 142         if (ret < 0)
 143                 dev_err(rdev_get_dev(rdev),
 144                         "couldn't set disable bits for regulator\n");
 145
 146         dev_vdbg(rdev_get_dev(rdev),
 147                 "%s-disable (bank, reg, mask, value): 0x%x, 0x%x, 0x%x, 0x%x\n",
 148                 info->desc.name, info->update_bank, info->update_reg,
 149                 info->update_mask, 0x0);
 150
 151         return ret;
 152 }
 153
 154 static int ab8500_regulator_is_enabled(struct regulator_dev *rdev)
 155 {
 156         int ret;
 157         struct ab8500_regulator_info *info = rdev_get_drvdata(rdev);
 158         u8 regval;
 159
 160         if (info == NULL) {
 161                 dev_err(rdev_get_dev(rdev), "regulator info null pointer\n");
 162                 return -EINVAL;
 163         }
 164
 165         ret = abx500_get_register_interruptible(info->dev,
 166                 info->update_bank, info->update_reg, &regval);
 167         if (ret < 0) {
 168                 dev_err(rdev_get_dev(rdev),
 169                         "couldn't read 0x%x register\n", info->update_reg);
 170                 return ret;
 171         }
 172
 173         dev_vdbg(rdev_get_dev(rdev),
 174                 "%s-is_enabled (bank, reg, mask, value): 0x%x, 0x%x, 0x%x,"
 175                 " 0x%x\n",
 176                 info->desc.name, info->update_bank, info->update_reg,
 177                 info->update_mask, regval);
 178
 179         if (regval & info->update_mask)
 180                 return true;
 181         else
 182                 return false;
 183 }
 184
 185 static int ab8500_list_voltage(struct regulator_dev *rdev, unsigned selector)
 186 {
 187         struct ab8500_regulator_info *info = rdev_get_drvdata(rdev);
 188
 189         if (info == NULL) {
 190                 dev_err(rdev_get_dev(rdev), "regulator info null pointer\n");
 191                 return -EINVAL;
 192         }
 193
 194         /* return the uV for the fixed regulators */
 195         if (info->fixed_uV)
 196                 return info->fixed_uV;
 197
 198         if (selector >= info->voltages_len)
 199                 return -EINVAL;
 200
 201         return info->voltages[selector];
 202 }
 203
 204 static int ab8500_regulator_get_voltage_sel(struct regulator_dev *rdev)
 205 {
 206         int ret, val;
 207         struct ab8500_regulator_info *info = rdev_get_drvdata(rdev);
 208         u8 regval;
 209
 210         if (info == NULL) {
 211                 dev_err(rdev_get_dev(rdev), "regulator info null pointer\n");
 212                 return -EINVAL;
 213         }
 214
 215         ret = abx500_get_register_interruptible(info->dev,
 216                         info->voltage_bank, info->voltage_reg, &regval);
 217         if (ret < 0) {
 218                 dev_err(rdev_get_dev(rdev),
 219                         "couldn't read voltage reg for regulator\n");
 220                 return ret;
 221         }
 222
 223         dev_vdbg(rdev_get_dev(rdev),
 224                 "%s-get_voltage (bank, reg, mask, value): 0x%x, 0x%x, 0x%x,"
 225                 " 0x%x\n",
 226                 info->desc.name, info->voltage_bank, info->voltage_reg,
 227                 info->voltage_mask, regval);
 228
 229         /* vintcore has a different layout */
 230         val = regval & info->voltage_mask;
 231         if (info->desc.id == AB8500_LDO_INTCORE)
 232                 return val >> 0x3;
 233         else
 234                 return val;
 235 }
 236
 237 static int ab8500_get_best_voltage_index(struct regulator_dev *rdev,
 238                 int min_uV, int max_uV)
 239 {
 240         struct ab8500_regulator_info *info = rdev_get_drvdata(rdev);
 241         int i;
 242
 243         /* check the supported voltage */
 244         for (i = 0; i < info->voltages_len; i++) {
 245                 if ((info->voltages[i] >= min_uV) &&
 246                     (info->voltages[i] <= max_uV))
 247                         return i;
 248         }
 249
 250         return -EINVAL;
 251 }
 252
 253 static int ab8500_regulator_set_voltage(struct regulator_dev *rdev,
 254                                         int min_uV, int max_uV,
 255                                         unsigned *selector)
 256 {
 257         int ret;
 258         struct ab8500_regulator_info *info = rdev_get_drvdata(rdev);
 259         u8 regval;
 260
 261         if (info == NULL) {
 262                 dev_err(rdev_get_dev(rdev), "regulator info null pointer\n");
 263                 return -EINVAL;
 264         }
 265
 266         /* get the appropriate voltages within the range */
 267         ret = ab8500_get_best_voltage_index(rdev, min_uV, max_uV);
 268         if (ret < 0) {
 269                 dev_err(rdev_get_dev(rdev),
 270                                 "couldn't get best voltage for regulator\n");
 271                 return ret;
 272         }
 273
 274         *selector = ret;
 275
 276         /* set the registers for the request */
 277         regval = (u8)ret;
 278         ret = abx500_mask_and_set_register_interruptible(info->dev,
 279                         info->voltage_bank, info->voltage_reg,
 280                         info->voltage_mask, regval);
 281         if (ret < 0)
 282                 dev_err(rdev_get_dev(rdev),
 283                 "couldn't set voltage reg for regulator\n");
 284
 285         dev_vdbg(rdev_get_dev(rdev),
 286                 "%s-set_voltage (bank, reg, mask, value): 0x%x, 0x%x, 0x%x,"
 287                 " 0x%x\n",
 288                 info->desc.name, info->voltage_bank, info->voltage_reg,
 289                 info->voltage_mask, regval);
 290
 291         return ret;
 292 }
 293
 294 static int ab8500_regulator_enable_time(struct regulator_dev *rdev)
 295 {
 296         struct ab8500_regulator_info *info = rdev_get_drvdata(rdev);
 297
 298         return info->delay;
 299 }
 300
 301 static int ab8500_regulator_set_voltage_time_sel(struct regulator_dev *rdev,
 302                                              unsigned int old_sel,
 303                                              unsigned int new_sel)
 304 {
 305         struct ab8500_regulator_info *info = rdev_get_drvdata(rdev);
 306         int ret;
 307
 308         /* If the regulator isn't on, it won't take time here */
 309         ret = ab8500_regulator_is_enabled(rdev);
 310         if (ret < 0)
 311                 return ret;
 312         if (!ret)
 313                 return 0;
 314         return info->delay;
 315 }
 316
 317 static struct regulator_ops ab8500_regulator_ops = {
 318         .enable         = ab8500_regulator_enable,
 319         .disable        = ab8500_regulator_disable,
 320         .is_enabled     = ab8500_regulator_is_enabled,
 321         .get_voltage_sel = ab8500_regulator_get_voltage_sel,
 322         .set_voltage    = ab8500_regulator_set_voltage,
 323         .list_voltage   = ab8500_list_voltage,
 324         .enable_time    = ab8500_regulator_enable_time,
 325         .set_voltage_time_sel = ab8500_regulator_set_voltage_time_sel,
 326 };
 327
 328 static int ab8500_fixed_get_voltage(struct regulator_dev *rdev)
 329 {
 330         struct ab8500_regulator_info *info = rdev_get_drvdata(rdev);
 331
 332         if (info == NULL) {
 333                 dev_err(rdev_get_dev(rdev), "regulator info null pointer\n");
 334                 return -EINVAL;
 335         }
 336
 337         return info->fixed_uV;
 338 }
 339
 340 static struct regulator_ops ab8500_regulator_fixed_ops = {
 341         .enable         = ab8500_regulator_enable,
 342         .disable        = ab8500_regulator_disable,
 343         .is_enabled     = ab8500_regulator_is_enabled,
 344         .get_voltage    = ab8500_fixed_get_voltage,
 345         .list_voltage   = ab8500_list_voltage,
 346         .enable_time    = ab8500_regulator_enable_time,
 347         .set_voltage_time_sel = ab8500_regulator_set_voltage_time_sel,
 348 };
 349
 350 static struct ab8500_regulator_info
 351                 ab8500_regulator_info[AB8500_NUM_REGULATORS] = {
 352         /*
 353          * Variable Voltage Regulators
 354          *   name, min mV, max mV,
 355          *   update bank, reg, mask, enable val
 356          *   volt bank, reg, mask, table, table length
 357          */
 358         [AB8500_LDO_AUX1] = {
 359                 .desc = {
 360                         .name           = "LDO-AUX1",
 361                         .ops            = &ab8500_regulator_ops,
 362                         .type           = REGULATOR_VOLTAGE,
 363                         .id             = AB8500_LDO_AUX1,
 364                         .owner          = THIS_MODULE,
 365                         .n_voltages     = ARRAY_SIZE(ldo_vauxn_voltages),
 366                 },
 367                 .min_uV                 = 1100000,
 368                 .max_uV                 = 3300000,
 369                 .update_bank            = 0x04,
 370                 .update_reg             = 0x09,
 371                 .update_mask            = 0x03,
 372                 .update_val_enable      = 0x01,
 373                 .voltage_bank           = 0x04,
 374                 .voltage_reg            = 0x1f,
 375                 .voltage_mask           = 0x0f,
 376                 .voltages               = ldo_vauxn_voltages,
 377                 .voltages_len           = ARRAY_SIZE(ldo_vauxn_voltages),
 378         },
 379         [AB8500_LDO_AUX2] = {
 380                 .desc = {
 381                         .name           = "LDO-AUX2",
 382                         .ops            = &ab8500_regulator_ops,
 383                         .type           = REGULATOR_VOLTAGE,
 384                         .id             = AB8500_LDO_AUX2,
 385                         .owner          = THIS_MODULE,
 386                         .n_voltages     = ARRAY_SIZE(ldo_vauxn_voltages),
 387                 },
 388                 .min_uV                 = 1100000,
 389                 .max_uV                 = 3300000,
 390                 .update_bank            = 0x04,
 391                 .update_reg             = 0x09,
 392                 .update_mask            = 0x0c,
 393                 .update_val_enable      = 0x04,
 394                 .voltage_bank           = 0x04,
 395                 .voltage_reg            = 0x20,
 396                 .voltage_mask           = 0x0f,
 397                 .voltages               = ldo_vauxn_voltages,
 398                 .voltages_len           = ARRAY_SIZE(ldo_vauxn_voltages),
 399         },
 400         [AB8500_LDO_AUX3] = {
 401                 .desc = {
 402                         .name           = "LDO-AUX3",
 403                         .ops            = &ab8500_regulator_ops,
 404                         .type           = REGULATOR_VOLTAGE,
 405                         .id             = AB8500_LDO_AUX3,
 406                         .owner          = THIS_MODULE,
 407                         .n_voltages     = ARRAY_SIZE(ldo_vaux3_voltages),
 408                 },
 409                 .min_uV                 = 1100000,
 410                 .max_uV                 = 3300000,
 411                 .update_bank            = 0x04,
 412                 .update_reg             = 0x0a,
 413                 .update_mask            = 0x03,
 414                 .update_val_enable      = 0x01,
 415                 .voltage_bank           = 0x04,
 416                 .voltage_reg            = 0x21,
 417                 .voltage_mask           = 0x07,
 418                 .voltages               = ldo_vaux3_voltages,
 419                 .voltages_len           = ARRAY_SIZE(ldo_vaux3_voltages),
 420         },
 421         [AB8500_LDO_INTCORE] = {
 422                 .desc = {
 423                         .name           = "LDO-INTCORE",
 424                         .ops            = &ab8500_regulator_ops,
 425                         .type           = REGULATOR_VOLTAGE,
 426                         .id             = AB8500_LDO_INTCORE,
 427                         .owner          = THIS_MODULE,
 428                         .n_voltages     = ARRAY_SIZE(ldo_vintcore_voltages),
 429                 },
 430                 .min_uV                 = 1100000,
 431                 .max_uV                 = 3300000,
 432                 .update_bank            = 0x03,
 433                 .update_reg             = 0x80,
 434                 .update_mask            = 0x44,
 435                 .update_val_enable      = 0x04,
 436                 .voltage_bank           = 0x03,
 437                 .voltage_reg            = 0x80,
 438                 .voltage_mask           = 0x38,
 439                 .voltages               = ldo_vintcore_voltages,
 440                 .voltages_len           = ARRAY_SIZE(ldo_vintcore_voltages),
 441         },
 442
 443         /*
 444          * Fixed Voltage Regulators
 445          *   name, fixed mV,
 446          *   update bank, reg, mask, enable val
 447          */
 448         [AB8500_LDO_TVOUT] = {
 449                 .desc = {
 450                         .name           = "LDO-TVOUT",
 451                         .ops            = &ab8500_regulator_fixed_ops,
 452                         .type           = REGULATOR_VOLTAGE,
 453                         .id             = AB8500_LDO_TVOUT,
 454                         .owner          = THIS_MODULE,
 455                         .n_voltages     = 1,
 456                 },
 457                 .delay                  = 10000,
 458                 .fixed_uV               = 2000000,
 459                 .update_bank            = 0x03,
 460                 .update_reg             = 0x80,
 461                 .update_mask            = 0x82,
 462                 .update_val_enable      = 0x02,
 463         },
 464         [AB8500_LDO_USB] = {
 465                 .desc = {
 466                         .name           = "LDO-USB",
 467                         .ops            = &ab8500_regulator_fixed_ops,
 468                         .type           = REGULATOR_VOLTAGE,
 469                         .id             = AB8500_LDO_USB,
 470                         .owner          = THIS_MODULE,
 471                         .n_voltages     = 1,
 472                 },
 473                 .fixed_uV               = 3300000,
 474                 .update_bank            = 0x03,
 475                 .update_reg             = 0x82,
 476                 .update_mask            = 0x03,
 477                 .update_val_enable      = 0x01,
 478         },
 479         [AB8500_LDO_AUDIO] = {
 480                 .desc = {
 481                         .name           = "LDO-AUDIO",
 482                         .ops            = &ab8500_regulator_fixed_ops,
 483                         .type           = REGULATOR_VOLTAGE,
 484                         .id             = AB8500_LDO_AUDIO,
 485                         .owner          = THIS_MODULE,
 486                         .n_voltages     = 1,
 487                 },
 488                 .fixed_uV               = 2000000,
 489                 .update_bank            = 0x03,
 490                 .update_reg             = 0x83,
 491                 .update_mask            = 0x02,
 492                 .update_val_enable      = 0x02,
 493         },
 494         [AB8500_LDO_ANAMIC1] = {
 495                 .desc = {
 496                         .name           = "LDO-ANAMIC1",
 497                         .ops            = &ab8500_regulator_fixed_ops,
 498                         .type           = REGULATOR_VOLTAGE,
 499                         .id             = AB8500_LDO_ANAMIC1,
 500                         .owner          = THIS_MODULE,
 501                         .n_voltages     = 1,
 502                 },
 503                 .fixed_uV               = 2050000,
 504                 .update_bank            = 0x03,
 505                 .update_reg             = 0x83,
 506                 .update_mask            = 0x08,
 507                 .update_val_enable      = 0x08,
 508         },
 509         [AB8500_LDO_ANAMIC2] = {
 510                 .desc = {
 511                         .name           = "LDO-ANAMIC2",
 512                         .ops            = &ab8500_regulator_fixed_ops,
 513                         .type           = REGULATOR_VOLTAGE,
 514                         .id             = AB8500_LDO_ANAMIC2,
 515                         .owner          = THIS_MODULE,
 516                         .n_voltages     = 1,
 517                 },
 518                 .fixed_uV               = 2050000,
 519                 .update_bank            = 0x03,
 520                 .update_reg             = 0x83,
 521                 .update_mask            = 0x10,
 522                 .update_val_enable      = 0x10,
 523         },
 524         [AB8500_LDO_DMIC] = {
 525                 .desc = {
 526                         .name           = "LDO-DMIC",
 527                         .ops            = &ab8500_regulator_fixed_ops,
 528                         .type           = REGULATOR_VOLTAGE,
 529                         .id             = AB8500_LDO_DMIC,
 530                         .owner          = THIS_MODULE,
 531                         .n_voltages     = 1,
 532                 },
 533                 .fixed_uV               = 1800000,
 534                 .update_bank            = 0x03,
 535                 .update_reg             = 0x83,
 536                 .update_mask            = 0x04,
 537                 .update_val_enable      = 0x04,
 538         },
 539         [AB8500_LDO_ANA] = {
 540                 .desc = {
 541                         .name           = "LDO-ANA",
 542                         .ops            = &ab8500_regulator_fixed_ops,
 543                         .type           = REGULATOR_VOLTAGE,
 544                         .id             = AB8500_LDO_ANA,
 545                         .owner          = THIS_MODULE,
 546                         .n_voltages     = 1,
 547                 },
 548                 .fixed_uV               = 1200000,
 549                 .update_bank            = 0x04,
 550                 .update_reg             = 0x06,
 551                 .update_mask            = 0x0c,
 552                 .update_val_enable      = 0x04,
 553         },
 554
 555
 556 };
 557
 558 struct ab8500_reg_init {
 559         u8 bank;
 560         u8 addr;
 561         u8 mask;
 562 };
 563
 564 #define REG_INIT(_id, _bank, _addr, _mask)      \
 565         [_id] = {                               \
 566                 .bank = _bank,                  \
 567                 .addr = _addr,                  \
 568                 .mask = _mask,                  \
 569         }
 570
 571 static struct ab8500_reg_init ab8500_reg_init[] = {
 572         /*
 573          * 0x30, VanaRequestCtrl
 574          * 0x0C, VpllRequestCtrl
 575          * 0xc0, VextSupply1RequestCtrl
 576          */
 577         REG_INIT(AB8500_REGUREQUESTCTRL2,       0x03, 0x04, 0xfc),
 578         /*
 579          * 0x03, VextSupply2RequestCtrl
 580          * 0x0c, VextSupply3RequestCtrl
 581          * 0x30, Vaux1RequestCtrl
 582          * 0xc0, Vaux2RequestCtrl
 583          */
 584         REG_INIT(AB8500_REGUREQUESTCTRL3,       0x03, 0x05, 0xff),
 585         /*
 586          * 0x03, Vaux3RequestCtrl
 587          * 0x04, SwHPReq
 588          */
 589         REG_INIT(AB8500_REGUREQUESTCTRL4,       0x03, 0x06, 0x07),
 590         /*
 591          * 0x08, VanaSysClkReq1HPValid
 592          * 0x20, Vaux1SysClkReq1HPValid
 593          * 0x40, Vaux2SysClkReq1HPValid
 594          * 0x80, Vaux3SysClkReq1HPValid
 595          */
 596         REG_INIT(AB8500_REGUSYSCLKREQ1HPVALID1, 0x03, 0x07, 0xe8),
 597         /*
 598          * 0x10, VextSupply1SysClkReq1HPValid
 599          * 0x20, VextSupply2SysClkReq1HPValid
 600          * 0x40, VextSupply3SysClkReq1HPValid
 601          */
 602         REG_INIT(AB8500_REGUSYSCLKREQ1HPVALID2, 0x03, 0x08, 0x70),
 603         /*
 604          * 0x08, VanaHwHPReq1Valid
 605          * 0x20, Vaux1HwHPReq1Valid
 606          * 0x40, Vaux2HwHPReq1Valid
 607          * 0x80, Vaux3HwHPReq1Valid
 608          */
 609         REG_INIT(AB8500_REGUHWHPREQ1VALID1,     0x03, 0x09, 0xe8),
 610         /*
 611          * 0x01, VextSupply1HwHPReq1Valid
 612          * 0x02, VextSupply2HwHPReq1Valid
 613          * 0x04, VextSupply3HwHPReq1Valid
 614          */
 615         REG_INIT(AB8500_REGUHWHPREQ1VALID2,     0x03, 0x0a, 0x07),
 616         /*
 617          * 0x08, VanaHwHPReq2Valid
 618          * 0x20, Vaux1HwHPReq2Valid
 619          * 0x40, Vaux2HwHPReq2Valid
 620          * 0x80, Vaux3HwHPReq2Valid
 621          */
 622         REG_INIT(AB8500_REGUHWHPREQ2VALID1,     0x03, 0x0b, 0xe8),
 623         /*
 624          * 0x01, VextSupply1HwHPReq2Valid
 625          * 0x02, VextSupply2HwHPReq2Valid
 626          * 0x04, VextSupply3HwHPReq2Valid
 627          */
 628         REG_INIT(AB8500_REGUHWHPREQ2VALID2,     0x03, 0x0c, 0x07),
 629         /*
 630          * 0x20, VanaSwHPReqValid
 631          * 0x80, Vaux1SwHPReqValid
 632          */
 633         REG_INIT(AB8500_REGUSWHPREQVALID1,      0x03, 0x0d, 0xa0),
 634         /*
 635          * 0x01, Vaux2SwHPReqValid
 636          * 0x02, Vaux3SwHPReqValid
 637          * 0x04, VextSupply1SwHPReqValid
 638          * 0x08, VextSupply2SwHPReqValid
 639          * 0x10, VextSupply3SwHPReqValid
 640          */
 641         REG_INIT(AB8500_REGUSWHPREQVALID2,      0x03, 0x0e, 0x1f),
 642         /*
 643          * 0x02, SysClkReq2Valid1
 644          * ...
 645          * 0x80, SysClkReq8Valid1
 646          */
 647         REG_INIT(AB8500_REGUSYSCLKREQVALID1,    0x03, 0x0f, 0xfe),
 648         /*
 649          * 0x02, SysClkReq2Valid2
 650          * ...
 651          * 0x80, SysClkReq8Valid2
 652          */
 653         REG_INIT(AB8500_REGUSYSCLKREQVALID2,    0x03, 0x10, 0xfe),
 654         /*
 655          * 0x02, VTVoutEna
 656          * 0x04, Vintcore12Ena
 657          * 0x38, Vintcore12Sel
 658          * 0x40, Vintcore12LP
 659          * 0x80, VTVoutLP
 660          */
 661         REG_INIT(AB8500_REGUMISC1,              0x03, 0x80, 0xfe),
 662         /*
 663          * 0x02, VaudioEna
 664          * 0x04, VdmicEna
 665          * 0x08, Vamic1Ena
 666          * 0x10, Vamic2Ena
 667          */
 668         REG_INIT(AB8500_VAUDIOSUPPLY,           0x03, 0x83, 0x1e),
 669         /*
 670          * 0x01, Vamic1_dzout
 671          * 0x02, Vamic2_dzout
 672          */
 673         REG_INIT(AB8500_REGUCTRL1VAMIC,         0x03, 0x84, 0x03),
 674         /*
 675          * 0x0c, VanaRegu
 676          * 0x03, VpllRegu
 677          */
 678         REG_INIT(AB8500_VPLLVANAREGU,           0x04, 0x06, 0x0f),
 679         /*
 680          * 0x01, VrefDDREna
 681          * 0x02, VrefDDRSleepMode
 682          */
 683         REG_INIT(AB8500_VREFDDR,                0x04, 0x07, 0x03),
 684         /*
 685          * 0x03, VextSupply1Regu
 686          * 0x0c, VextSupply2Regu
 687          * 0x30, VextSupply3Regu
 688          * 0x40, ExtSupply2Bypass
 689          * 0x80, ExtSupply3Bypass
 690          */
 691         REG_INIT(AB8500_EXTSUPPLYREGU,          0x04, 0x08, 0xff),
 692         /*
 693          * 0x03, Vaux1Regu
 694          * 0x0c, Vaux2Regu
 695          */
 696         REG_INIT(AB8500_VAUX12REGU,             0x04, 0x09, 0x0f),
 697         /*
 698          * 0x03, Vaux3Regu
 699          */
 700         REG_INIT(AB8500_VRF1VAUX3REGU,          0x04, 0x0a, 0x03),
 701         /*
 702          * 0x3f, Vsmps1Sel1
 703          */
 704         REG_INIT(AB8500_VSMPS1SEL1,             0x04, 0x13, 0x3f),
 705         /*
 706          * 0x0f, Vaux1Sel
 707          */
 708         REG_INIT(AB8500_VAUX1SEL,               0x04, 0x1f, 0x0f),
 709         /*
 710          * 0x0f, Vaux2Sel
 711          */
 712         REG_INIT(AB8500_VAUX2SEL,               0x04, 0x20, 0x0f),
 713         /*
 714          * 0x07, Vaux3Sel
 715          */
 716         REG_INIT(AB8500_VRF1VAUX3SEL,           0x04, 0x21, 0x07),
 717         /*
 718          * 0x01, VextSupply12LP
 719          */
 720         REG_INIT(AB8500_REGUCTRL2SPARE,         0x04, 0x22, 0x01),
 721         /*
 722          * 0x04, Vaux1Disch
 723          * 0x08, Vaux2Disch
 724          * 0x10, Vaux3Disch
 725          * 0x20, Vintcore12Disch
 726          * 0x40, VTVoutDisch
 727          * 0x80, VaudioDisch
 728          */
 729         REG_INIT(AB8500_REGUCTRLDISCH,          0x04, 0x43, 0xfc),
 730         /*
 731          * 0x02, VanaDisch
 732          * 0x04, VdmicPullDownEna
 733          * 0x10, VdmicDisch
 734          */
 735         REG_INIT(AB8500_REGUCTRLDISCH2,         0x04, 0x44, 0x16),
 736 };
 737
 738 static __devinit int ab8500_regulator_probe(struct platform_device *pdev)
 739 {
 740         struct ab8500 *ab8500 = dev_get_drvdata(pdev->dev.parent);
 741         struct ab8500_platform_data *pdata;
 742         int i, err;
 743
 744         if (!ab8500) {
 745                 dev_err(&pdev->dev, "null mfd parent\n");
 746                 return -EINVAL;
 747         }
 748         pdata = dev_get_platdata(ab8500->dev);
 749         if (!pdata) {
 750                 dev_err(&pdev->dev, "null pdata\n");
 751                 return -EINVAL;
 752         }
 753
 754         /* make sure the platform data has the correct size */
 755         if (pdata->num_regulator != ARRAY_SIZE(ab8500_regulator_info)) {
 756                 dev_err(&pdev->dev, "Configuration error: size mismatch.\n");
 757                 return -EINVAL;
 758         }
 759
 760         /* initialize registers */
 761         for (i = 0; i < pdata->num_regulator_reg_init; i++) {
 762                 int id;
 763                 u8 value;
 764
 765                 id = pdata->regulator_reg_init[i].id;
 766                 value = pdata->regulator_reg_init[i].value;
 767
 768                 /* check for configuration errors */
 769                 if (id >= AB8500_NUM_REGULATOR_REGISTERS) {
 770                         dev_err(&pdev->dev,
 771                                 "Configuration error: id outside range.\n");
 772                         return -EINVAL;
 773                 }
 774                 if (value & ~ab8500_reg_init[id].mask) {
 775                         dev_err(&pdev->dev,
 776                                 "Configuration error: value outside mask.\n");
 777                         return -EINVAL;
 778                 }
 779
 780                 /* initialize register */
 781                 err = abx500_mask_and_set_register_interruptible(&pdev->dev,
 782                         ab8500_reg_init[id].bank,
 783                         ab8500_reg_init[id].addr,
 784                         ab8500_reg_init[id].mask,
 785                         value);
 786                 if (err < 0) {
 787                         dev_err(&pdev->dev,
 788                                 "Failed to initialize 0x%02x, 0x%02x.\n",
 789                                 ab8500_reg_init[id].bank,
 790                                 ab8500_reg_init[id].addr);
 791                         return err;
 792                 }
 793                 dev_vdbg(&pdev->dev,
 794                         "  init: 0x%02x, 0x%02x, 0x%02x, 0x%02x\n",
 795                         ab8500_reg_init[id].bank,
 796                         ab8500_reg_init[id].addr,
 797                         ab8500_reg_init[id].mask,
 798                         value);
 799         }
 800
 801         /* register all regulators */
 802         for (i = 0; i < ARRAY_SIZE(ab8500_regulator_info); i++) {
 803                 struct ab8500_regulator_info *info = NULL;
 804
 805                 /* assign per-regulator data */
 806                 info = &ab8500_regulator_info[i];
 807                 info->dev = &pdev->dev;
 808
 809                 /* fix for hardware before ab8500v2.0 */
 810                 if (abx500_get_chip_id(info->dev) < 0x20) {
 811                         if (info->desc.id == AB8500_LDO_AUX3) {
 812                                 info->desc.n_voltages =
 813                                         ARRAY_SIZE(ldo_vauxn_voltages);
 814                                 info->voltages = ldo_vauxn_voltages;
 815                                 info->voltages_len =
 816                                         ARRAY_SIZE(ldo_vauxn_voltages);
 817                                 info->voltage_mask = 0xf;
 818                         }
 819                 }
 820
 821                 /* register regulator with framework */
 822                 info->regulator = regulator_register(&info->desc, &pdev->dev,
 823                                 &pdata->regulator[i], info, NULL);
 824                 if (IS_ERR(info->regulator)) {
 825                         err = PTR_ERR(info->regulator);
 826                         dev_err(&pdev->dev, "failed to register regulator %s\n",
 827                                         info->desc.name);
 828                         /* when we fail, un-register all earlier regulators */
 829                         while (--i >= 0) {
 830                                 info = &ab8500_regulator_info[i];
 831                                 regulator_unregister(info->regulator);
 832                         }
 833                         return err;
 834                 }
 835
 836                 dev_vdbg(rdev_get_dev(info->regulator),
 837                         "%s-probed\n", info->desc.name);
 838         }
 839
 840         return 0;
 841 }
 842
 843 static __devexit int ab8500_regulator_remove(struct platform_device *pdev)
 844 {
 845         int i;
 846
 847         for (i = 0; i < ARRAY_SIZE(ab8500_regulator_info); i++) {
 848                 struct ab8500_regulator_info *info = NULL;
 849                 info = &ab8500_regulator_info[i];
 850
 851                 dev_vdbg(rdev_get_dev(info->regulator),
 852                         "%s-remove\n", info->desc.name);
 853
 854                 regulator_unregister(info->regulator);
 855         }
 856
 857         return 0;
 858 }
 859
 860 static struct platform_driver ab8500_regulator_driver = {
 861         .probe = ab8500_regulator_probe,
 862         .remove = __devexit_p(ab8500_regulator_remove),
 863         .driver         = {
 864                 .name   = "ab8500-regulator",
 865                 .owner  = THIS_MODULE,
 866         },
 867 };
 868
 869 static int __init ab8500_regulator_init(void)
 870 {
 871         int ret;
 872
 873         ret = platform_driver_register(&ab8500_regulator_driver);
 874         if (ret != 0)
 875                 pr_err("Failed to register ab8500 regulator: %d\n", ret);
 876
 877         return ret;
 878 }
 879 subsys_initcall(ab8500_regulator_init);
 880
 881 static void __exit ab8500_regulator_exit(void)
 882 {
 883         platform_driver_unregister(&ab8500_regulator_driver);
 884 }
 885 module_exit(ab8500_regulator_exit);
 886
 887 MODULE_LICENSE("GPL v2");
 888 MODULE_AUTHOR("Sundar Iyer <sundar.iyer@stericsson.com>");
 889 MODULE_DESCRIPTION("Regulator Driver for ST-Ericsson AB8500 Mixed-Sig PMIC");
 890 MODULE_ALIAS("platform:ab8500-regulator");