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_regulator_set_voltage_sel(struct regulator_dev *rdev,
 238                                             unsigned selector)
 239 {
 240         int ret;
 241         struct ab8500_regulator_info *info = rdev_get_drvdata(rdev);
 242         u8 regval;
 243
 244         if (info == NULL) {
 245                 dev_err(rdev_get_dev(rdev), "regulator info null pointer\n");
 246                 return -EINVAL;
 247         }
 248
 249         /* set the registers for the request */
 250         regval = (u8)selector;
 251         ret = abx500_mask_and_set_register_interruptible(info->dev,
 252                         info->voltage_bank, info->voltage_reg,
 253                         info->voltage_mask, regval);
 254         if (ret < 0)
 255                 dev_err(rdev_get_dev(rdev),
 256                 "couldn't set voltage reg for regulator\n");
 257
 258         dev_vdbg(rdev_get_dev(rdev),
 259                 "%s-set_voltage (bank, reg, mask, value): 0x%x, 0x%x, 0x%x,"
 260                 " 0x%x\n",
 261                 info->desc.name, info->voltage_bank, info->voltage_reg,
 262                 info->voltage_mask, regval);
 263
 264         return ret;
 265 }
 266
 267 static int ab8500_regulator_enable_time(struct regulator_dev *rdev)
 268 {
 269         struct ab8500_regulator_info *info = rdev_get_drvdata(rdev);
 270
 271         return info->delay;
 272 }
 273
 274 static int ab8500_regulator_set_voltage_time_sel(struct regulator_dev *rdev,
 275                                              unsigned int old_sel,
 276                                              unsigned int new_sel)
 277 {
 278         struct ab8500_regulator_info *info = rdev_get_drvdata(rdev);
 279         int ret;
 280
 281         /* If the regulator isn't on, it won't take time here */
 282         ret = ab8500_regulator_is_enabled(rdev);
 283         if (ret < 0)
 284                 return ret;
 285         if (!ret)
 286                 return 0;
 287         return info->delay;
 288 }
 289
 290 static struct regulator_ops ab8500_regulator_ops = {
 291         .enable         = ab8500_regulator_enable,
 292         .disable        = ab8500_regulator_disable,
 293         .is_enabled     = ab8500_regulator_is_enabled,
 294         .get_voltage_sel = ab8500_regulator_get_voltage_sel,
 295         .set_voltage_sel = ab8500_regulator_set_voltage_sel,
 296         .list_voltage   = ab8500_list_voltage,
 297         .enable_time    = ab8500_regulator_enable_time,
 298         .set_voltage_time_sel = ab8500_regulator_set_voltage_time_sel,
 299 };
 300
 301 static int ab8500_fixed_get_voltage(struct regulator_dev *rdev)
 302 {
 303         struct ab8500_regulator_info *info = rdev_get_drvdata(rdev);
 304
 305         if (info == NULL) {
 306                 dev_err(rdev_get_dev(rdev), "regulator info null pointer\n");
 307                 return -EINVAL;
 308         }
 309
 310         return info->fixed_uV;
 311 }
 312
 313 static struct regulator_ops ab8500_regulator_fixed_ops = {
 314         .enable         = ab8500_regulator_enable,
 315         .disable        = ab8500_regulator_disable,
 316         .is_enabled     = ab8500_regulator_is_enabled,
 317         .get_voltage    = ab8500_fixed_get_voltage,
 318         .list_voltage   = ab8500_list_voltage,
 319         .enable_time    = ab8500_regulator_enable_time,
 320         .set_voltage_time_sel = ab8500_regulator_set_voltage_time_sel,
 321 };
 322
 323 static struct ab8500_regulator_info
 324                 ab8500_regulator_info[AB8500_NUM_REGULATORS] = {
 325         /*
 326          * Variable Voltage Regulators
 327          *   name, min mV, max mV,
 328          *   update bank, reg, mask, enable val
 329          *   volt bank, reg, mask, table, table length
 330          */
 331         [AB8500_LDO_AUX1] = {
 332                 .desc = {
 333                         .name           = "LDO-AUX1",
 334                         .ops            = &ab8500_regulator_ops,
 335                         .type           = REGULATOR_VOLTAGE,
 336                         .id             = AB8500_LDO_AUX1,
 337                         .owner          = THIS_MODULE,
 338                         .n_voltages     = ARRAY_SIZE(ldo_vauxn_voltages),
 339                 },
 340                 .min_uV                 = 1100000,
 341                 .max_uV                 = 3300000,
 342                 .update_bank            = 0x04,
 343                 .update_reg             = 0x09,
 344                 .update_mask            = 0x03,
 345                 .update_val_enable      = 0x01,
 346                 .voltage_bank           = 0x04,
 347                 .voltage_reg            = 0x1f,
 348                 .voltage_mask           = 0x0f,
 349                 .voltages               = ldo_vauxn_voltages,
 350                 .voltages_len           = ARRAY_SIZE(ldo_vauxn_voltages),
 351         },
 352         [AB8500_LDO_AUX2] = {
 353                 .desc = {
 354                         .name           = "LDO-AUX2",
 355                         .ops            = &ab8500_regulator_ops,
 356                         .type           = REGULATOR_VOLTAGE,
 357                         .id             = AB8500_LDO_AUX2,
 358                         .owner          = THIS_MODULE,
 359                         .n_voltages     = ARRAY_SIZE(ldo_vauxn_voltages),
 360                 },
 361                 .min_uV                 = 1100000,
 362                 .max_uV                 = 3300000,
 363                 .update_bank            = 0x04,
 364                 .update_reg             = 0x09,
 365                 .update_mask            = 0x0c,
 366                 .update_val_enable      = 0x04,
 367                 .voltage_bank           = 0x04,
 368                 .voltage_reg            = 0x20,
 369                 .voltage_mask           = 0x0f,
 370                 .voltages               = ldo_vauxn_voltages,
 371                 .voltages_len           = ARRAY_SIZE(ldo_vauxn_voltages),
 372         },
 373         [AB8500_LDO_AUX3] = {
 374                 .desc = {
 375                         .name           = "LDO-AUX3",
 376                         .ops            = &ab8500_regulator_ops,
 377                         .type           = REGULATOR_VOLTAGE,
 378                         .id             = AB8500_LDO_AUX3,
 379                         .owner          = THIS_MODULE,
 380                         .n_voltages     = ARRAY_SIZE(ldo_vaux3_voltages),
 381                 },
 382                 .min_uV                 = 1100000,
 383                 .max_uV                 = 3300000,
 384                 .update_bank            = 0x04,
 385                 .update_reg             = 0x0a,
 386                 .update_mask            = 0x03,
 387                 .update_val_enable      = 0x01,
 388                 .voltage_bank           = 0x04,
 389                 .voltage_reg            = 0x21,
 390                 .voltage_mask           = 0x07,
 391                 .voltages               = ldo_vaux3_voltages,
 392                 .voltages_len           = ARRAY_SIZE(ldo_vaux3_voltages),
 393         },
 394         [AB8500_LDO_INTCORE] = {
 395                 .desc = {
 396                         .name           = "LDO-INTCORE",
 397                         .ops            = &ab8500_regulator_ops,
 398                         .type           = REGULATOR_VOLTAGE,
 399                         .id             = AB8500_LDO_INTCORE,
 400                         .owner          = THIS_MODULE,
 401                         .n_voltages     = ARRAY_SIZE(ldo_vintcore_voltages),
 402                 },
 403                 .min_uV                 = 1100000,
 404                 .max_uV                 = 3300000,
 405                 .update_bank            = 0x03,
 406                 .update_reg             = 0x80,
 407                 .update_mask            = 0x44,
 408                 .update_val_enable      = 0x04,
 409                 .voltage_bank           = 0x03,
 410                 .voltage_reg            = 0x80,
 411                 .voltage_mask           = 0x38,
 412                 .voltages               = ldo_vintcore_voltages,
 413                 .voltages_len           = ARRAY_SIZE(ldo_vintcore_voltages),
 414         },
 415
 416         /*
 417          * Fixed Voltage Regulators
 418          *   name, fixed mV,
 419          *   update bank, reg, mask, enable val
 420          */
 421         [AB8500_LDO_TVOUT] = {
 422                 .desc = {
 423                         .name           = "LDO-TVOUT",
 424                         .ops            = &ab8500_regulator_fixed_ops,
 425                         .type           = REGULATOR_VOLTAGE,
 426                         .id             = AB8500_LDO_TVOUT,
 427                         .owner          = THIS_MODULE,
 428                         .n_voltages     = 1,
 429                 },
 430                 .delay                  = 10000,
 431                 .fixed_uV               = 2000000,
 432                 .update_bank            = 0x03,
 433                 .update_reg             = 0x80,
 434                 .update_mask            = 0x82,
 435                 .update_val_enable      = 0x02,
 436         },
 437         [AB8500_LDO_USB] = {
 438                 .desc = {
 439                         .name           = "LDO-USB",
 440                         .ops            = &ab8500_regulator_fixed_ops,
 441                         .type           = REGULATOR_VOLTAGE,
 442                         .id             = AB8500_LDO_USB,
 443                         .owner          = THIS_MODULE,
 444                         .n_voltages     = 1,
 445                 },
 446                 .fixed_uV               = 3300000,
 447                 .update_bank            = 0x03,
 448                 .update_reg             = 0x82,
 449                 .update_mask            = 0x03,
 450                 .update_val_enable      = 0x01,
 451         },
 452         [AB8500_LDO_AUDIO] = {
 453                 .desc = {
 454                         .name           = "LDO-AUDIO",
 455                         .ops            = &ab8500_regulator_fixed_ops,
 456                         .type           = REGULATOR_VOLTAGE,
 457                         .id             = AB8500_LDO_AUDIO,
 458                         .owner          = THIS_MODULE,
 459                         .n_voltages     = 1,
 460                 },
 461                 .fixed_uV               = 2000000,
 462                 .update_bank            = 0x03,
 463                 .update_reg             = 0x83,
 464                 .update_mask            = 0x02,
 465                 .update_val_enable      = 0x02,
 466         },
 467         [AB8500_LDO_ANAMIC1] = {
 468                 .desc = {
 469                         .name           = "LDO-ANAMIC1",
 470                         .ops            = &ab8500_regulator_fixed_ops,
 471                         .type           = REGULATOR_VOLTAGE,
 472                         .id             = AB8500_LDO_ANAMIC1,
 473                         .owner          = THIS_MODULE,
 474                         .n_voltages     = 1,
 475                 },
 476                 .fixed_uV               = 2050000,
 477                 .update_bank            = 0x03,
 478                 .update_reg             = 0x83,
 479                 .update_mask            = 0x08,
 480                 .update_val_enable      = 0x08,
 481         },
 482         [AB8500_LDO_ANAMIC2] = {
 483                 .desc = {
 484                         .name           = "LDO-ANAMIC2",
 485                         .ops            = &ab8500_regulator_fixed_ops,
 486                         .type           = REGULATOR_VOLTAGE,
 487                         .id             = AB8500_LDO_ANAMIC2,
 488                         .owner          = THIS_MODULE,
 489                         .n_voltages     = 1,
 490                 },
 491                 .fixed_uV               = 2050000,
 492                 .update_bank            = 0x03,
 493                 .update_reg             = 0x83,
 494                 .update_mask            = 0x10,
 495                 .update_val_enable      = 0x10,
 496         },
 497         [AB8500_LDO_DMIC] = {
 498                 .desc = {
 499                         .name           = "LDO-DMIC",
 500                         .ops            = &ab8500_regulator_fixed_ops,
 501                         .type           = REGULATOR_VOLTAGE,
 502                         .id             = AB8500_LDO_DMIC,
 503                         .owner          = THIS_MODULE,
 504                         .n_voltages     = 1,
 505                 },
 506                 .fixed_uV               = 1800000,
 507                 .update_bank            = 0x03,
 508                 .update_reg             = 0x83,
 509                 .update_mask            = 0x04,
 510                 .update_val_enable      = 0x04,
 511         },
 512         [AB8500_LDO_ANA] = {
 513                 .desc = {
 514                         .name           = "LDO-ANA",
 515                         .ops            = &ab8500_regulator_fixed_ops,
 516                         .type           = REGULATOR_VOLTAGE,
 517                         .id             = AB8500_LDO_ANA,
 518                         .owner          = THIS_MODULE,
 519                         .n_voltages     = 1,
 520                 },
 521                 .fixed_uV               = 1200000,
 522                 .update_bank            = 0x04,
 523                 .update_reg             = 0x06,
 524                 .update_mask            = 0x0c,
 525                 .update_val_enable      = 0x04,
 526         },
 527
 528
 529 };
 530
 531 struct ab8500_reg_init {
 532         u8 bank;
 533         u8 addr;
 534         u8 mask;
 535 };
 536
 537 #define REG_INIT(_id, _bank, _addr, _mask)      \
 538         [_id] = {                               \
 539                 .bank = _bank,                  \
 540                 .addr = _addr,                  \
 541                 .mask = _mask,                  \
 542         }
 543
 544 static struct ab8500_reg_init ab8500_reg_init[] = {
 545         /*
 546          * 0x30, VanaRequestCtrl
 547          * 0x0C, VpllRequestCtrl
 548          * 0xc0, VextSupply1RequestCtrl
 549          */
 550         REG_INIT(AB8500_REGUREQUESTCTRL2,       0x03, 0x04, 0xfc),
 551         /*
 552          * 0x03, VextSupply2RequestCtrl
 553          * 0x0c, VextSupply3RequestCtrl
 554          * 0x30, Vaux1RequestCtrl
 555          * 0xc0, Vaux2RequestCtrl
 556          */
 557         REG_INIT(AB8500_REGUREQUESTCTRL3,       0x03, 0x05, 0xff),
 558         /*
 559          * 0x03, Vaux3RequestCtrl
 560          * 0x04, SwHPReq
 561          */
 562         REG_INIT(AB8500_REGUREQUESTCTRL4,       0x03, 0x06, 0x07),
 563         /*
 564          * 0x08, VanaSysClkReq1HPValid
 565          * 0x20, Vaux1SysClkReq1HPValid
 566          * 0x40, Vaux2SysClkReq1HPValid
 567          * 0x80, Vaux3SysClkReq1HPValid
 568          */
 569         REG_INIT(AB8500_REGUSYSCLKREQ1HPVALID1, 0x03, 0x07, 0xe8),
 570         /*
 571          * 0x10, VextSupply1SysClkReq1HPValid
 572          * 0x20, VextSupply2SysClkReq1HPValid
 573          * 0x40, VextSupply3SysClkReq1HPValid
 574          */
 575         REG_INIT(AB8500_REGUSYSCLKREQ1HPVALID2, 0x03, 0x08, 0x70),
 576         /*
 577          * 0x08, VanaHwHPReq1Valid
 578          * 0x20, Vaux1HwHPReq1Valid
 579          * 0x40, Vaux2HwHPReq1Valid
 580          * 0x80, Vaux3HwHPReq1Valid
 581          */
 582         REG_INIT(AB8500_REGUHWHPREQ1VALID1,     0x03, 0x09, 0xe8),
 583         /*
 584          * 0x01, VextSupply1HwHPReq1Valid
 585          * 0x02, VextSupply2HwHPReq1Valid
 586          * 0x04, VextSupply3HwHPReq1Valid
 587          */
 588         REG_INIT(AB8500_REGUHWHPREQ1VALID2,     0x03, 0x0a, 0x07),
 589         /*
 590          * 0x08, VanaHwHPReq2Valid
 591          * 0x20, Vaux1HwHPReq2Valid
 592          * 0x40, Vaux2HwHPReq2Valid
 593          * 0x80, Vaux3HwHPReq2Valid
 594          */
 595         REG_INIT(AB8500_REGUHWHPREQ2VALID1,     0x03, 0x0b, 0xe8),
 596         /*
 597          * 0x01, VextSupply1HwHPReq2Valid
 598          * 0x02, VextSupply2HwHPReq2Valid
 599          * 0x04, VextSupply3HwHPReq2Valid
 600          */
 601         REG_INIT(AB8500_REGUHWHPREQ2VALID2,     0x03, 0x0c, 0x07),
 602         /*
 603          * 0x20, VanaSwHPReqValid
 604          * 0x80, Vaux1SwHPReqValid
 605          */
 606         REG_INIT(AB8500_REGUSWHPREQVALID1,      0x03, 0x0d, 0xa0),
 607         /*
 608          * 0x01, Vaux2SwHPReqValid
 609          * 0x02, Vaux3SwHPReqValid
 610          * 0x04, VextSupply1SwHPReqValid
 611          * 0x08, VextSupply2SwHPReqValid
 612          * 0x10, VextSupply3SwHPReqValid
 613          */
 614         REG_INIT(AB8500_REGUSWHPREQVALID2,      0x03, 0x0e, 0x1f),
 615         /*
 616          * 0x02, SysClkReq2Valid1
 617          * ...
 618          * 0x80, SysClkReq8Valid1
 619          */
 620         REG_INIT(AB8500_REGUSYSCLKREQVALID1,    0x03, 0x0f, 0xfe),
 621         /*
 622          * 0x02, SysClkReq2Valid2
 623          * ...
 624          * 0x80, SysClkReq8Valid2
 625          */
 626         REG_INIT(AB8500_REGUSYSCLKREQVALID2,    0x03, 0x10, 0xfe),
 627         /*
 628          * 0x02, VTVoutEna
 629          * 0x04, Vintcore12Ena
 630          * 0x38, Vintcore12Sel
 631          * 0x40, Vintcore12LP
 632          * 0x80, VTVoutLP
 633          */
 634         REG_INIT(AB8500_REGUMISC1,              0x03, 0x80, 0xfe),
 635         /*
 636          * 0x02, VaudioEna
 637          * 0x04, VdmicEna
 638          * 0x08, Vamic1Ena
 639          * 0x10, Vamic2Ena
 640          */
 641         REG_INIT(AB8500_VAUDIOSUPPLY,           0x03, 0x83, 0x1e),
 642         /*
 643          * 0x01, Vamic1_dzout
 644          * 0x02, Vamic2_dzout
 645          */
 646         REG_INIT(AB8500_REGUCTRL1VAMIC,         0x03, 0x84, 0x03),
 647         /*
 648          * 0x0c, VanaRegu
 649          * 0x03, VpllRegu
 650          */
 651         REG_INIT(AB8500_VPLLVANAREGU,           0x04, 0x06, 0x0f),
 652         /*
 653          * 0x01, VrefDDREna
 654          * 0x02, VrefDDRSleepMode
 655          */
 656         REG_INIT(AB8500_VREFDDR,                0x04, 0x07, 0x03),
 657         /*
 658          * 0x03, VextSupply1Regu
 659          * 0x0c, VextSupply2Regu
 660          * 0x30, VextSupply3Regu
 661          * 0x40, ExtSupply2Bypass
 662          * 0x80, ExtSupply3Bypass
 663          */
 664         REG_INIT(AB8500_EXTSUPPLYREGU,          0x04, 0x08, 0xff),
 665         /*
 666          * 0x03, Vaux1Regu
 667          * 0x0c, Vaux2Regu
 668          */
 669         REG_INIT(AB8500_VAUX12REGU,             0x04, 0x09, 0x0f),
 670         /*
 671          * 0x03, Vaux3Regu
 672          */
 673         REG_INIT(AB8500_VRF1VAUX3REGU,          0x04, 0x0a, 0x03),
 674         /*
 675          * 0x3f, Vsmps1Sel1
 676          */
 677         REG_INIT(AB8500_VSMPS1SEL1,             0x04, 0x13, 0x3f),
 678         /*
 679          * 0x0f, Vaux1Sel
 680          */
 681         REG_INIT(AB8500_VAUX1SEL,               0x04, 0x1f, 0x0f),
 682         /*
 683          * 0x0f, Vaux2Sel
 684          */
 685         REG_INIT(AB8500_VAUX2SEL,               0x04, 0x20, 0x0f),
 686         /*
 687          * 0x07, Vaux3Sel
 688          */
 689         REG_INIT(AB8500_VRF1VAUX3SEL,           0x04, 0x21, 0x07),
 690         /*
 691          * 0x01, VextSupply12LP
 692          */
 693         REG_INIT(AB8500_REGUCTRL2SPARE,         0x04, 0x22, 0x01),
 694         /*
 695          * 0x04, Vaux1Disch
 696          * 0x08, Vaux2Disch
 697          * 0x10, Vaux3Disch
 698          * 0x20, Vintcore12Disch
 699          * 0x40, VTVoutDisch
 700          * 0x80, VaudioDisch
 701          */
 702         REG_INIT(AB8500_REGUCTRLDISCH,          0x04, 0x43, 0xfc),
 703         /*
 704          * 0x02, VanaDisch
 705          * 0x04, VdmicPullDownEna
 706          * 0x10, VdmicDisch
 707          */
 708         REG_INIT(AB8500_REGUCTRLDISCH2,         0x04, 0x44, 0x16),
 709 };
 710
 711 static __devinit int
 712 ab8500_regulator_init_registers(struct platform_device *pdev, int id, int value)
 713 {
 714         int err;
 715
 716         if (value & ~ab8500_reg_init[id].mask) {
 717                 dev_err(&pdev->dev,
 718                         "Configuration error: value outside mask.\n");
 719                 return -EINVAL;
 720         }
 721
 722         err = abx500_mask_and_set_register_interruptible(
 723                 &pdev->dev,
 724                 ab8500_reg_init[id].bank,
 725                 ab8500_reg_init[id].addr,
 726                 ab8500_reg_init[id].mask,
 727                 value);
 728         if (err < 0) {
 729                 dev_err(&pdev->dev,
 730                         "Failed to initialize 0x%02x, 0x%02x.\n",
 731                         ab8500_reg_init[id].bank,
 732                         ab8500_reg_init[id].addr);
 733                 return err;
 734         }
 735
 736         dev_vdbg(&pdev->dev,
 737                 "init: 0x%02x, 0x%02x, 0x%02x, 0x%02x\n",
 738                 ab8500_reg_init[id].bank,
 739                 ab8500_reg_init[id].addr,
 740                 ab8500_reg_init[id].mask,
 741                 value);
 742
 743         return 0;
 744 }
 745
 746 static __devinit int ab8500_regulator_register(struct platform_device *pdev,
 747                                         struct regulator_init_data *init_data,
 748                                         int id,
 749                                         struct device_node *np)
 750 {
 751         struct ab8500_regulator_info *info = NULL;
 752         struct regulator_config config = { };
 753         int err;
 754
 755         /* assign per-regulator data */
 756         info = &ab8500_regulator_info[id];
 757         info->dev = &pdev->dev;
 758
 759         config.dev = &pdev->dev;
 760         config.init_data = init_data;
 761         config.driver_data = info;
 762         config.of_node = np;
 763
 764         /* fix for hardware before ab8500v2.0 */
 765         if (abx500_get_chip_id(info->dev) < 0x20) {
 766                 if (info->desc.id == AB8500_LDO_AUX3) {
 767                         info->desc.n_voltages =
 768                                 ARRAY_SIZE(ldo_vauxn_voltages);
 769                         info->voltages = ldo_vauxn_voltages;
 770                         info->voltages_len =
 771                                 ARRAY_SIZE(ldo_vauxn_voltages);
 772                         info->voltage_mask = 0xf;
 773                 }
 774         }
 775
 776         /* register regulator with framework */
 777         info->regulator = regulator_register(&info->desc, &config);
 778         if (IS_ERR(info->regulator)) {
 779                 err = PTR_ERR(info->regulator);
 780                 dev_err(&pdev->dev, "failed to register regulator %s\n",
 781                         info->desc.name);
 782                 /* when we fail, un-register all earlier regulators */
 783                 while (--id >= 0) {
 784                         info = &ab8500_regulator_info[id];
 785                         regulator_unregister(info->regulator);
 786                 }
 787                 return err;
 788         }
 789
 790         return 0;
 791 }
 792
 793 static __devinit int ab8500_regulator_probe(struct platform_device *pdev)
 794 {
 795         struct ab8500 *ab8500 = dev_get_drvdata(pdev->dev.parent);
 796         struct ab8500_platform_data *pdata;
 797         int i, err;
 798
 799         if (!ab8500) {
 800                 dev_err(&pdev->dev, "null mfd parent\n");
 801                 return -EINVAL;
 802         }
 803         pdata = dev_get_platdata(ab8500->dev);
 804         if (!pdata) {
 805                 dev_err(&pdev->dev, "null pdata\n");
 806                 return -EINVAL;
 807         }
 808
 809         /* make sure the platform data has the correct size */
 810         if (pdata->num_regulator != ARRAY_SIZE(ab8500_regulator_info)) {
 811                 dev_err(&pdev->dev, "Configuration error: size mismatch.\n");
 812                 return -EINVAL;
 813         }
 814
 815         /* initialize registers */
 816         for (i = 0; i < pdata->num_regulator_reg_init; i++) {
 817                 int id, value;
 818
 819                 id = pdata->regulator_reg_init[i].id;
 820                 value = pdata->regulator_reg_init[i].value;
 821
 822                 /* check for configuration errors */
 823                 if (id >= AB8500_NUM_REGULATOR_REGISTERS) {
 824                         dev_err(&pdev->dev,
 825                                 "Configuration error: id outside range.\n");
 826                         return -EINVAL;
 827                 }
 828
 829                 err = ab8500_regulator_init_registers(pdev, id, value);
 830                 if (err < 0)
 831                         return err;
 832         }
 833
 834         /* register all regulators */
 835         for (i = 0; i < ARRAY_SIZE(ab8500_regulator_info); i++) {
 836                 err = ab8500_regulator_register(pdev, &pdata->regulator[i], i, NULL);
 837                 if (err < 0)
 838                         return err;
 839         }
 840
 841         return 0;
 842 }
 843
 844 static __devexit int ab8500_regulator_remove(struct platform_device *pdev)
 845 {
 846         int i;
 847
 848         for (i = 0; i < ARRAY_SIZE(ab8500_regulator_info); i++) {
 849                 struct ab8500_regulator_info *info = NULL;
 850                 info = &ab8500_regulator_info[i];
 851
 852                 dev_vdbg(rdev_get_dev(info->regulator),
 853                         "%s-remove\n", info->desc.name);
 854
 855                 regulator_unregister(info->regulator);
 856         }
 857
 858         return 0;
 859 }
 860
 861 static struct platform_driver ab8500_regulator_driver = {
 862         .probe = ab8500_regulator_probe,
 863         .remove = __devexit_p(ab8500_regulator_remove),
 864         .driver         = {
 865                 .name   = "ab8500-regulator",
 866                 .owner  = THIS_MODULE,
 867         },
 868 };
 869
 870 static int __init ab8500_regulator_init(void)
 871 {
 872         int ret;
 873
 874         ret = platform_driver_register(&ab8500_regulator_driver);
 875         if (ret != 0)
 876                 pr_err("Failed to register ab8500 regulator: %d\n", ret);
 877
 878         return ret;
 879 }
 880 subsys_initcall(ab8500_regulator_init);
 881
 882 static void __exit ab8500_regulator_exit(void)
 883 {
 884         platform_driver_unregister(&ab8500_regulator_driver);
 885 }
 886 module_exit(ab8500_regulator_exit);
 887
 888 MODULE_LICENSE("GPL v2");
 889 MODULE_AUTHOR("Sundar Iyer <sundar.iyer@stericsson.com>");
 890 MODULE_DESCRIPTION("Regulator Driver for ST-Ericsson AB8500 Mixed-Sig PMIC");
 891 MODULE_ALIAS("platform:ab8500-regulator");