Pileus Git - ~andy/linux/blob - drivers/regulator/palmas-regulator.c

   1 /*
   2  * Driver for Regulator part of Palmas PMIC Chips
   3  *
   4  * Copyright 2011-2012 Texas Instruments Inc.
   5  *
   6  * Author: Graeme Gregory <gg@slimlogic.co.uk>
   7  *
   8  *  This program is free software; you can redistribute it and/or modify it
   9  *  under  the terms of the GNU General  Public License as published by the
  10  *  Free Software Foundation;  either version 2 of the License, or (at your
  11  *  option) any later version.
  12  *
  13  */
  14
  15 #include <linux/kernel.h>
  16 #include <linux/module.h>
  17 #include <linux/init.h>
  18 #include <linux/err.h>
  19 #include <linux/platform_device.h>
  20 #include <linux/regulator/driver.h>
  21 #include <linux/regulator/machine.h>
  22 #include <linux/slab.h>
  23 #include <linux/regmap.h>
  24 #include <linux/mfd/palmas.h>
  25 #include <linux/of.h>
  26 #include <linux/of_platform.h>
  27 #include <linux/regulator/of_regulator.h>
  28
  29 struct regs_info {
  30         char    *name;
  31         u8      vsel_addr;
  32         u8      ctrl_addr;
  33         u8      tstep_addr;
  34 };
  35
  36 static const struct regs_info palmas_regs_info[] = {
  37         {
  38                 .name           = "SMPS12",
  39                 .vsel_addr      = PALMAS_SMPS12_VOLTAGE,
  40                 .ctrl_addr      = PALMAS_SMPS12_CTRL,
  41                 .tstep_addr     = PALMAS_SMPS12_TSTEP,
  42         },
  43         {
  44                 .name           = "SMPS123",
  45                 .vsel_addr      = PALMAS_SMPS12_VOLTAGE,
  46                 .ctrl_addr      = PALMAS_SMPS12_CTRL,
  47                 .tstep_addr     = PALMAS_SMPS12_TSTEP,
  48         },
  49         {
  50                 .name           = "SMPS3",
  51                 .vsel_addr      = PALMAS_SMPS3_VOLTAGE,
  52                 .ctrl_addr      = PALMAS_SMPS3_CTRL,
  53         },
  54         {
  55                 .name           = "SMPS45",
  56                 .vsel_addr      = PALMAS_SMPS45_VOLTAGE,
  57                 .ctrl_addr      = PALMAS_SMPS45_CTRL,
  58                 .tstep_addr     = PALMAS_SMPS45_TSTEP,
  59         },
  60         {
  61                 .name           = "SMPS457",
  62                 .vsel_addr      = PALMAS_SMPS45_VOLTAGE,
  63                 .ctrl_addr      = PALMAS_SMPS45_CTRL,
  64                 .tstep_addr     = PALMAS_SMPS45_TSTEP,
  65         },
  66         {
  67                 .name           = "SMPS6",
  68                 .vsel_addr      = PALMAS_SMPS6_VOLTAGE,
  69                 .ctrl_addr      = PALMAS_SMPS6_CTRL,
  70                 .tstep_addr     = PALMAS_SMPS6_TSTEP,
  71         },
  72         {
  73                 .name           = "SMPS7",
  74                 .vsel_addr      = PALMAS_SMPS7_VOLTAGE,
  75                 .ctrl_addr      = PALMAS_SMPS7_CTRL,
  76         },
  77         {
  78                 .name           = "SMPS8",
  79                 .vsel_addr      = PALMAS_SMPS8_VOLTAGE,
  80                 .ctrl_addr      = PALMAS_SMPS8_CTRL,
  81                 .tstep_addr     = PALMAS_SMPS8_TSTEP,
  82         },
  83         {
  84                 .name           = "SMPS9",
  85                 .vsel_addr      = PALMAS_SMPS9_VOLTAGE,
  86                 .ctrl_addr      = PALMAS_SMPS9_CTRL,
  87         },
  88         {
  89                 .name           = "SMPS10",
  90         },
  91         {
  92                 .name           = "LDO1",
  93                 .vsel_addr      = PALMAS_LDO1_VOLTAGE,
  94                 .ctrl_addr      = PALMAS_LDO1_CTRL,
  95         },
  96         {
  97                 .name           = "LDO2",
  98                 .vsel_addr      = PALMAS_LDO2_VOLTAGE,
  99                 .ctrl_addr      = PALMAS_LDO2_CTRL,
 100         },
 101         {
 102                 .name           = "LDO3",
 103                 .vsel_addr      = PALMAS_LDO3_VOLTAGE,
 104                 .ctrl_addr      = PALMAS_LDO3_CTRL,
 105         },
 106         {
 107                 .name           = "LDO4",
 108                 .vsel_addr      = PALMAS_LDO4_VOLTAGE,
 109                 .ctrl_addr      = PALMAS_LDO4_CTRL,
 110         },
 111         {
 112                 .name           = "LDO5",
 113                 .vsel_addr      = PALMAS_LDO5_VOLTAGE,
 114                 .ctrl_addr      = PALMAS_LDO5_CTRL,
 115         },
 116         {
 117                 .name           = "LDO6",
 118                 .vsel_addr      = PALMAS_LDO6_VOLTAGE,
 119                 .ctrl_addr      = PALMAS_LDO6_CTRL,
 120         },
 121         {
 122                 .name           = "LDO7",
 123                 .vsel_addr      = PALMAS_LDO7_VOLTAGE,
 124                 .ctrl_addr      = PALMAS_LDO7_CTRL,
 125         },
 126         {
 127                 .name           = "LDO8",
 128                 .vsel_addr      = PALMAS_LDO8_VOLTAGE,
 129                 .ctrl_addr      = PALMAS_LDO8_CTRL,
 130         },
 131         {
 132                 .name           = "LDO9",
 133                 .vsel_addr      = PALMAS_LDO9_VOLTAGE,
 134                 .ctrl_addr      = PALMAS_LDO9_CTRL,
 135         },
 136         {
 137                 .name           = "LDOLN",
 138                 .vsel_addr      = PALMAS_LDOLN_VOLTAGE,
 139                 .ctrl_addr      = PALMAS_LDOLN_CTRL,
 140         },
 141         {
 142                 .name           = "LDOUSB",
 143                 .vsel_addr      = PALMAS_LDOUSB_VOLTAGE,
 144                 .ctrl_addr      = PALMAS_LDOUSB_CTRL,
 145         },
 146 };
 147
 148 #define SMPS_CTRL_MODE_OFF              0x00
 149 #define SMPS_CTRL_MODE_ON               0x01
 150 #define SMPS_CTRL_MODE_ECO              0x02
 151 #define SMPS_CTRL_MODE_PWM              0x03
 152
 153 /* These values are derived from the data sheet. And are the number of steps
 154  * where there is a voltage change, the ranges at beginning and end of register
 155  * max/min values where there are no change are ommitted.
 156  *
 157  * So they are basically (maxV-minV)/stepV
 158  */
 159 #define PALMAS_SMPS_NUM_VOLTAGES        116
 160 #define PALMAS_SMPS10_NUM_VOLTAGES      2
 161 #define PALMAS_LDO_NUM_VOLTAGES         50
 162
 163 #define SMPS10_VSEL                     (1<<3)
 164 #define SMPS10_BOOST_EN                 (1<<2)
 165 #define SMPS10_BYPASS_EN                (1<<1)
 166 #define SMPS10_SWITCH_EN                (1<<0)
 167
 168 #define REGULATOR_SLAVE                 0
 169
 170 static int palmas_smps_read(struct palmas *palmas, unsigned int reg,
 171                 unsigned int *dest)
 172 {
 173         unsigned int addr;
 174
 175         addr = PALMAS_BASE_TO_REG(PALMAS_SMPS_BASE, reg);
 176
 177         return regmap_read(palmas->regmap[REGULATOR_SLAVE], addr, dest);
 178 }
 179
 180 static int palmas_smps_write(struct palmas *palmas, unsigned int reg,
 181                 unsigned int value)
 182 {
 183         unsigned int addr;
 184
 185         addr = PALMAS_BASE_TO_REG(PALMAS_SMPS_BASE, reg);
 186
 187         return regmap_write(palmas->regmap[REGULATOR_SLAVE], addr, value);
 188 }
 189
 190 static int palmas_ldo_read(struct palmas *palmas, unsigned int reg,
 191                 unsigned int *dest)
 192 {
 193         unsigned int addr;
 194
 195         addr = PALMAS_BASE_TO_REG(PALMAS_LDO_BASE, reg);
 196
 197         return regmap_read(palmas->regmap[REGULATOR_SLAVE], addr, dest);
 198 }
 199
 200 static int palmas_ldo_write(struct palmas *palmas, unsigned int reg,
 201                 unsigned int value)
 202 {
 203         unsigned int addr;
 204
 205         addr = PALMAS_BASE_TO_REG(PALMAS_LDO_BASE, reg);
 206
 207         return regmap_write(palmas->regmap[REGULATOR_SLAVE], addr, value);
 208 }
 209
 210 static int palmas_is_enabled_smps(struct regulator_dev *dev)
 211 {
 212         struct palmas_pmic *pmic = rdev_get_drvdata(dev);
 213         int id = rdev_get_id(dev);
 214         unsigned int reg;
 215
 216         palmas_smps_read(pmic->palmas, palmas_regs_info[id].ctrl_addr, &reg);
 217
 218         reg &= PALMAS_SMPS12_CTRL_STATUS_MASK;
 219         reg >>= PALMAS_SMPS12_CTRL_STATUS_SHIFT;
 220
 221         return !!(reg);
 222 }
 223
 224 static int palmas_enable_smps(struct regulator_dev *dev)
 225 {
 226         struct palmas_pmic *pmic = rdev_get_drvdata(dev);
 227         int id = rdev_get_id(dev);
 228         unsigned int reg;
 229
 230         palmas_smps_read(pmic->palmas, palmas_regs_info[id].ctrl_addr, &reg);
 231
 232         reg &= ~PALMAS_SMPS12_CTRL_MODE_ACTIVE_MASK;
 233         reg |= SMPS_CTRL_MODE_ON;
 234
 235         palmas_smps_write(pmic->palmas, palmas_regs_info[id].ctrl_addr, reg);
 236
 237         return 0;
 238 }
 239
 240 static int palmas_disable_smps(struct regulator_dev *dev)
 241 {
 242         struct palmas_pmic *pmic = rdev_get_drvdata(dev);
 243         int id = rdev_get_id(dev);
 244         unsigned int reg;
 245
 246         palmas_smps_read(pmic->palmas, palmas_regs_info[id].ctrl_addr, &reg);
 247
 248         reg &= ~PALMAS_SMPS12_CTRL_MODE_ACTIVE_MASK;
 249
 250         palmas_smps_write(pmic->palmas, palmas_regs_info[id].ctrl_addr, reg);
 251
 252         return 0;
 253 }
 254
 255
 256 static int palmas_set_mode_smps(struct regulator_dev *dev, unsigned int mode)
 257 {
 258         struct palmas_pmic *pmic = rdev_get_drvdata(dev);
 259         int id = rdev_get_id(dev);
 260         unsigned int reg;
 261
 262         palmas_smps_read(pmic->palmas, palmas_regs_info[id].ctrl_addr, &reg);
 263         reg &= ~PALMAS_SMPS12_CTRL_MODE_ACTIVE_MASK;
 264
 265         switch (mode) {
 266         case REGULATOR_MODE_NORMAL:
 267                 reg |= SMPS_CTRL_MODE_ON;
 268                 break;
 269         case REGULATOR_MODE_IDLE:
 270                 reg |= SMPS_CTRL_MODE_ECO;
 271                 break;
 272         case REGULATOR_MODE_FAST:
 273                 reg |= SMPS_CTRL_MODE_PWM;
 274                 break;
 275         default:
 276                 return -EINVAL;
 277         }
 278         palmas_smps_write(pmic->palmas, palmas_regs_info[id].ctrl_addr, reg);
 279
 280         return 0;
 281 }
 282
 283 static unsigned int palmas_get_mode_smps(struct regulator_dev *dev)
 284 {
 285         struct palmas_pmic *pmic = rdev_get_drvdata(dev);
 286         int id = rdev_get_id(dev);
 287         unsigned int reg;
 288
 289         palmas_smps_read(pmic->palmas, palmas_regs_info[id].ctrl_addr, &reg);
 290         reg &= PALMAS_SMPS12_CTRL_STATUS_MASK;
 291         reg >>= PALMAS_SMPS12_CTRL_STATUS_SHIFT;
 292
 293         switch (reg) {
 294         case SMPS_CTRL_MODE_ON:
 295                 return REGULATOR_MODE_NORMAL;
 296         case SMPS_CTRL_MODE_ECO:
 297                 return REGULATOR_MODE_IDLE;
 298         case SMPS_CTRL_MODE_PWM:
 299                 return REGULATOR_MODE_FAST;
 300         }
 301
 302         return 0;
 303 }
 304
 305 static int palmas_list_voltage_smps(struct regulator_dev *dev,
 306                                         unsigned selector)
 307 {
 308         struct palmas_pmic *pmic = rdev_get_drvdata(dev);
 309         int id = rdev_get_id(dev);
 310         int mult = 1;
 311
 312         /* Read the multiplier set in VSEL register to return
 313          * the correct voltage.
 314          */
 315         if (pmic->range[id])
 316                 mult = 2;
 317
 318         if (selector == 0)
 319                 return 0;
 320         else if (selector < 6)
 321                 return 500000 * mult;
 322         else
 323                 /* Voltage is linear mapping starting from selector 6,
 324                  * volt = (0.49V + ((selector - 5) * 0.01V)) * RANGE
 325                  * RANGE is either x1 or x2
 326                  */
 327                 return (490000 + ((selector - 5) * 10000)) * mult;
 328 }
 329
 330 static int palmas_get_voltage_smps_sel(struct regulator_dev *dev)
 331 {
 332         struct palmas_pmic *pmic = rdev_get_drvdata(dev);
 333         int id = rdev_get_id(dev);
 334         int selector;
 335         unsigned int reg;
 336         unsigned int addr;
 337
 338         addr = palmas_regs_info[id].vsel_addr;
 339
 340         palmas_smps_read(pmic->palmas, addr, &reg);
 341
 342         selector = reg & PALMAS_SMPS12_VOLTAGE_VSEL_MASK;
 343
 344         return selector;
 345 }
 346
 347 static int palmas_set_voltage_smps_sel(struct regulator_dev *dev,
 348                 unsigned selector)
 349 {
 350         struct palmas_pmic *pmic = rdev_get_drvdata(dev);
 351         int id = rdev_get_id(dev);
 352         unsigned int reg, addr;
 353
 354         addr = palmas_regs_info[id].vsel_addr;
 355         reg = selector;
 356
 357         /* Make sure we don't change the value of RANGE */
 358         if (pmic->range[id])
 359                 reg |= PALMAS_SMPS12_VOLTAGE_RANGE;
 360
 361         palmas_smps_write(pmic->palmas, addr, reg);
 362
 363         return 0;
 364 }
 365
 366 static int palmas_map_voltage_smps(struct regulator_dev *rdev,
 367                 int min_uV, int max_uV)
 368 {
 369         struct palmas_pmic *pmic = rdev_get_drvdata(rdev);
 370         int id = rdev_get_id(rdev);
 371         int ret, voltage;
 372
 373         if (min_uV == 0)
 374                 return 0;
 375
 376         if (pmic->range[id]) { /* RANGE is x2 */
 377                 if (min_uV < 1000000)
 378                         min_uV = 1000000;
 379                 ret = DIV_ROUND_UP(min_uV - 1000000, 20000) + 6;
 380         } else {                /* RANGE is x1 */
 381                 if (min_uV < 500000)
 382                         min_uV = 500000;
 383                 ret = DIV_ROUND_UP(min_uV - 500000, 10000) + 6;
 384         }
 385
 386         /* Map back into a voltage to verify we're still in bounds */
 387         voltage = palmas_list_voltage_smps(rdev, ret);
 388         if (voltage < min_uV || voltage > max_uV)
 389                 return -EINVAL;
 390
 391         return ret;
 392 }
 393
 394 static struct regulator_ops palmas_ops_smps = {
 395         .is_enabled             = palmas_is_enabled_smps,
 396         .enable                 = palmas_enable_smps,
 397         .disable                = palmas_disable_smps,
 398         .set_mode               = palmas_set_mode_smps,
 399         .get_mode               = palmas_get_mode_smps,
 400         .get_voltage_sel        = palmas_get_voltage_smps_sel,
 401         .set_voltage_sel        = palmas_set_voltage_smps_sel,
 402         .list_voltage           = palmas_list_voltage_smps,
 403         .map_voltage            = palmas_map_voltage_smps,
 404 };
 405
 406 static struct regulator_ops palmas_ops_smps10 = {
 407         .is_enabled             = regulator_is_enabled_regmap,
 408         .enable                 = regulator_enable_regmap,
 409         .disable                = regulator_disable_regmap,
 410         .get_voltage_sel        = regulator_get_voltage_sel_regmap,
 411         .set_voltage_sel        = regulator_set_voltage_sel_regmap,
 412         .list_voltage           = regulator_list_voltage_linear,
 413         .map_voltage            = regulator_map_voltage_linear,
 414 };
 415
 416 static int palmas_is_enabled_ldo(struct regulator_dev *dev)
 417 {
 418         struct palmas_pmic *pmic = rdev_get_drvdata(dev);
 419         int id = rdev_get_id(dev);
 420         unsigned int reg;
 421
 422         palmas_ldo_read(pmic->palmas, palmas_regs_info[id].ctrl_addr, &reg);
 423
 424         reg &= PALMAS_LDO1_CTRL_STATUS;
 425
 426         return !!(reg);
 427 }
 428
 429 static int palmas_list_voltage_ldo(struct regulator_dev *dev,
 430                                         unsigned selector)
 431 {
 432         if (!selector)
 433                 return 0;
 434
 435         /* voltage is 0.85V + (selector * 0.05v) */
 436         return  850000 + (selector * 50000);
 437 }
 438
 439 static int palmas_map_voltage_ldo(struct regulator_dev *rdev,
 440                 int min_uV, int max_uV)
 441 {
 442         int ret, voltage;
 443
 444         if (min_uV == 0)
 445                 return 0;
 446
 447         if (min_uV < 900000)
 448                 min_uV = 900000;
 449         ret = DIV_ROUND_UP(min_uV - 900000, 50000) + 1;
 450
 451         /* Map back into a voltage to verify we're still in bounds */
 452         voltage = palmas_list_voltage_ldo(rdev, ret);
 453         if (voltage < min_uV || voltage > max_uV)
 454                 return -EINVAL;
 455
 456         return ret;
 457 }
 458
 459 static struct regulator_ops palmas_ops_ldo = {
 460         .is_enabled             = palmas_is_enabled_ldo,
 461         .enable                 = regulator_enable_regmap,
 462         .disable                = regulator_disable_regmap,
 463         .get_voltage_sel        = regulator_get_voltage_sel_regmap,
 464         .set_voltage_sel        = regulator_set_voltage_sel_regmap,
 465         .list_voltage           = palmas_list_voltage_ldo,
 466         .map_voltage            = palmas_map_voltage_ldo,
 467 };
 468
 469 /*
 470  * setup the hardware based sleep configuration of the SMPS/LDO regulators
 471  * from the platform data. This is different to the software based control
 472  * supported by the regulator framework as it is controlled by toggling
 473  * pins on the PMIC such as PREQ, SYSEN, ...
 474  */
 475 static int palmas_smps_init(struct palmas *palmas, int id,
 476                 struct palmas_reg_init *reg_init)
 477 {
 478         unsigned int reg;
 479         unsigned int addr;
 480         int ret;
 481
 482         addr = palmas_regs_info[id].ctrl_addr;
 483
 484         ret = palmas_smps_read(palmas, addr, &reg);
 485         if (ret)
 486                 return ret;
 487
 488         switch (id) {
 489         case PALMAS_REG_SMPS10:
 490                 if (reg_init->mode_sleep) {
 491                         reg &= ~PALMAS_SMPS10_CTRL_MODE_SLEEP_MASK;
 492                         reg |= reg_init->mode_sleep <<
 493                                         PALMAS_SMPS10_CTRL_MODE_SLEEP_SHIFT;
 494                 }
 495                 break;
 496         default:
 497                 if (reg_init->warm_reset)
 498                         reg |= PALMAS_SMPS12_CTRL_WR_S;
 499
 500                 if (reg_init->roof_floor)
 501                         reg |= PALMAS_SMPS12_CTRL_ROOF_FLOOR_EN;
 502
 503                 if (reg_init->mode_sleep) {
 504                         reg &= ~PALMAS_SMPS12_CTRL_MODE_SLEEP_MASK;
 505                         reg |= reg_init->mode_sleep <<
 506                                         PALMAS_SMPS12_CTRL_MODE_SLEEP_SHIFT;
 507                 }
 508         }
 509
 510         ret = palmas_smps_write(palmas, addr, reg);
 511         if (ret)
 512                 return ret;
 513
 514         if (palmas_regs_info[id].tstep_addr && reg_init->tstep) {
 515                 addr = palmas_regs_info[id].tstep_addr;
 516
 517                 reg = reg_init->tstep & PALMAS_SMPS12_TSTEP_TSTEP_MASK;
 518
 519                 ret = palmas_smps_write(palmas, addr, reg);
 520                 if (ret)
 521                         return ret;
 522         }
 523
 524         if (palmas_regs_info[id].vsel_addr && reg_init->vsel) {
 525                 addr = palmas_regs_info[id].vsel_addr;
 526
 527                 reg = reg_init->vsel;
 528
 529                 ret = palmas_smps_write(palmas, addr, reg);
 530                 if (ret)
 531                         return ret;
 532         }
 533
 534
 535         return 0;
 536 }
 537
 538 static int palmas_ldo_init(struct palmas *palmas, int id,
 539                 struct palmas_reg_init *reg_init)
 540 {
 541         unsigned int reg;
 542         unsigned int addr;
 543         int ret;
 544
 545         addr = palmas_regs_info[id].ctrl_addr;
 546
 547         ret = palmas_ldo_read(palmas, addr, &reg);
 548         if (ret)
 549                 return ret;
 550
 551         if (reg_init->warm_reset)
 552                 reg |= PALMAS_LDO1_CTRL_WR_S;
 553
 554         if (reg_init->mode_sleep)
 555                 reg |= PALMAS_LDO1_CTRL_MODE_SLEEP;
 556
 557         ret = palmas_ldo_write(palmas, addr, reg);
 558         if (ret)
 559                 return ret;
 560
 561         return 0;
 562 }
 563
 564 static struct of_regulator_match palmas_matches[] = {
 565         { .name = "smps12", },
 566         { .name = "smps123", },
 567         { .name = "smps3", },
 568         { .name = "smps45", },
 569         { .name = "smps457", },
 570         { .name = "smps6", },
 571         { .name = "smps7", },
 572         { .name = "smps8", },
 573         { .name = "smps9", },
 574         { .name = "smps10", },
 575         { .name = "ldo1", },
 576         { .name = "ldo2", },
 577         { .name = "ldo3", },
 578         { .name = "ldo4", },
 579         { .name = "ldo5", },
 580         { .name = "ldo6", },
 581         { .name = "ldo7", },
 582         { .name = "ldo8", },
 583         { .name = "ldo9", },
 584         { .name = "ldoln", },
 585         { .name = "ldousb", },
 586 };
 587
 588 static void __devinit palmas_dt_to_pdata(struct device *dev,
 589                 struct device_node *node,
 590                 struct palmas_pmic_platform_data *pdata)
 591 {
 592         struct device_node *regulators;
 593         u32 prop;
 594         int idx, ret;
 595
 596         regulators = of_find_node_by_name(node, "regulators");
 597         if (!regulators) {
 598                 dev_info(dev, "regulator node not found\n");
 599                 return;
 600         }
 601
 602         ret = of_regulator_match(dev, regulators, palmas_matches,
 603                         PALMAS_NUM_REGS);
 604         if (ret < 0) {
 605                 dev_err(dev, "Error parsing regulator init data: %d\n", ret);
 606                 return;
 607         }
 608
 609         for (idx = 0; idx < PALMAS_NUM_REGS; idx++) {
 610                 if (!palmas_matches[idx].init_data ||
 611                                 !palmas_matches[idx].of_node)
 612                         continue;
 613
 614                 pdata->reg_data[idx] = palmas_matches[idx].init_data;
 615
 616                 pdata->reg_init[idx] = devm_kzalloc(dev,
 617                                 sizeof(struct palmas_reg_init), GFP_KERNEL);
 618
 619                 ret = of_property_read_u32(palmas_matches[idx].of_node,
 620                                 "ti,warm_reset", &prop);
 621                 if (!ret)
 622                         pdata->reg_init[idx]->warm_reset = prop;
 623
 624                 ret = of_property_read_u32(palmas_matches[idx].of_node,
 625                                 "ti,roof_floor", &prop);
 626                 if (!ret)
 627                         pdata->reg_init[idx]->roof_floor = prop;
 628
 629                 ret = of_property_read_u32(palmas_matches[idx].of_node,
 630                                 "ti,mode_sleep", &prop);
 631                 if (!ret)
 632                         pdata->reg_init[idx]->mode_sleep = prop;
 633
 634                 ret = of_property_read_u32(palmas_matches[idx].of_node,
 635                                 "ti,warm_reset", &prop);
 636                 if (!ret)
 637                         pdata->reg_init[idx]->warm_reset = prop;
 638
 639                 ret = of_property_read_u32(palmas_matches[idx].of_node,
 640                                 "ti,tstep", &prop);
 641                 if (!ret)
 642                         pdata->reg_init[idx]->tstep = prop;
 643
 644                 ret = of_property_read_u32(palmas_matches[idx].of_node,
 645                                 "ti,vsel", &prop);
 646                 if (!ret)
 647                         pdata->reg_init[idx]->vsel = prop;
 648         }
 649
 650         ret = of_property_read_u32(node, "ti,ldo6_vibrator", &prop);
 651         if (!ret)
 652                 pdata->ldo6_vibrator = prop;
 653 }
 654
 655
 656 static __devinit int palmas_probe(struct platform_device *pdev)
 657 {
 658         struct palmas *palmas = dev_get_drvdata(pdev->dev.parent);
 659         struct palmas_pmic_platform_data *pdata = pdev->dev.platform_data;
 660         struct device_node *node = pdev->dev.of_node;
 661         struct regulator_dev *rdev;
 662         struct regulator_config config = { };
 663         struct palmas_pmic *pmic;
 664         struct palmas_reg_init *reg_init;
 665         int id = 0, ret;
 666         unsigned int addr, reg;
 667
 668         if (node && !pdata) {
 669                 pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL);
 670
 671                 if (!pdata)
 672                         return -ENOMEM;
 673
 674                 palmas_dt_to_pdata(&pdev->dev, node, pdata);
 675         }
 676
 677         pmic = devm_kzalloc(&pdev->dev, sizeof(*pmic), GFP_KERNEL);
 678         if (!pmic)
 679                 return -ENOMEM;
 680
 681         pmic->dev = &pdev->dev;
 682         pmic->palmas = palmas;
 683         palmas->pmic = pmic;
 684         platform_set_drvdata(pdev, pmic);
 685
 686         ret = palmas_smps_read(palmas, PALMAS_SMPS_CTRL, &reg);
 687         if (ret)
 688                 return ret;
 689
 690         if (reg & PALMAS_SMPS_CTRL_SMPS12_SMPS123_EN)
 691                 pmic->smps123 = 1;
 692
 693         if (reg & PALMAS_SMPS_CTRL_SMPS45_SMPS457_EN)
 694                 pmic->smps457 = 1;
 695
 696         config.regmap = palmas->regmap[REGULATOR_SLAVE];
 697         config.dev = &pdev->dev;
 698         config.driver_data = pmic;
 699
 700         for (id = 0; id < PALMAS_REG_LDO1; id++) {
 701
 702                 /*
 703                  * Miss out regulators which are not available due
 704                  * to slaving configurations.
 705                  */
 706                 switch (id) {
 707                 case PALMAS_REG_SMPS12:
 708                 case PALMAS_REG_SMPS3:
 709                         if (pmic->smps123)
 710                                 continue;
 711                         break;
 712                 case PALMAS_REG_SMPS123:
 713                         if (!pmic->smps123)
 714                                 continue;
 715                         break;
 716                 case PALMAS_REG_SMPS45:
 717                 case PALMAS_REG_SMPS7:
 718                         if (pmic->smps457)
 719                                 continue;
 720                         break;
 721                 case PALMAS_REG_SMPS457:
 722                         if (!pmic->smps457)
 723                                 continue;
 724                 }
 725
 726                 /* Register the regulators */
 727                 pmic->desc[id].name = palmas_regs_info[id].name;
 728                 pmic->desc[id].id = id;
 729
 730                 switch (id) {
 731                 case PALMAS_REG_SMPS10:
 732                         pmic->desc[id].n_voltages = PALMAS_SMPS10_NUM_VOLTAGES;
 733                         pmic->desc[id].ops = &palmas_ops_smps10;
 734                         pmic->desc[id].vsel_reg =
 735                                         PALMAS_BASE_TO_REG(PALMAS_SMPS_BASE,
 736                                                         PALMAS_SMPS10_CTRL);
 737                         pmic->desc[id].vsel_mask = SMPS10_VSEL;
 738                         pmic->desc[id].enable_reg =
 739                                         PALMAS_BASE_TO_REG(PALMAS_SMPS_BASE,
 740                                                         PALMAS_SMPS10_STATUS);
 741                         pmic->desc[id].enable_mask = SMPS10_BOOST_EN;
 742                         pmic->desc[id].min_uV = 3750000;
 743                         pmic->desc[id].uV_step = 1250000;
 744                         break;
 745                 default:
 746                         pmic->desc[id].ops = &palmas_ops_smps;
 747                         pmic->desc[id].n_voltages = PALMAS_SMPS_NUM_VOLTAGES;
 748                 }
 749
 750                 pmic->desc[id].type = REGULATOR_VOLTAGE;
 751                 pmic->desc[id].owner = THIS_MODULE;
 752
 753                 /* Initialise sleep/init values from platform data */
 754                 if (pdata) {
 755                         reg_init = pdata->reg_init[id];
 756                         if (reg_init) {
 757                                 ret = palmas_smps_init(palmas, id, reg_init);
 758                                 if (ret)
 759                                         goto err_unregister_regulator;
 760                         }
 761                 }
 762
 763                 /*
 764                  * read and store the RANGE bit for later use
 765                  * This must be done before regulator is probed otherwise
 766                  * we error in probe with unsuportable ranges.
 767                  */
 768                 if (id != PALMAS_REG_SMPS10) {
 769                         addr = palmas_regs_info[id].vsel_addr;
 770
 771                         ret = palmas_smps_read(pmic->palmas, addr, &reg);
 772                         if (ret)
 773                                 goto err_unregister_regulator;
 774                         if (reg & PALMAS_SMPS12_VOLTAGE_RANGE)
 775                                 pmic->range[id] = 1;
 776                 }
 777
 778                 if (pdata)
 779                         config.init_data = pdata->reg_data[id];
 780                 else
 781                         config.init_data = NULL;
 782
 783                 config.of_node = palmas_matches[id].of_node;
 784
 785                 rdev = regulator_register(&pmic->desc[id], &config);
 786                 if (IS_ERR(rdev)) {
 787                         dev_err(&pdev->dev,
 788                                 "failed to register %s regulator\n",
 789                                 pdev->name);
 790                         ret = PTR_ERR(rdev);
 791                         goto err_unregister_regulator;
 792                 }
 793
 794                 /* Save regulator for cleanup */
 795                 pmic->rdev[id] = rdev;
 796         }
 797
 798         /* Start this loop from the id left from previous loop */
 799         for (; id < PALMAS_NUM_REGS; id++) {
 800
 801                 /* Miss out regulators which are not available due
 802                  * to alternate functions.
 803                  */
 804
 805                 /* Register the regulators */
 806                 pmic->desc[id].name = palmas_regs_info[id].name;
 807                 pmic->desc[id].id = id;
 808                 pmic->desc[id].n_voltages = PALMAS_LDO_NUM_VOLTAGES;
 809
 810                 pmic->desc[id].ops = &palmas_ops_ldo;
 811
 812                 pmic->desc[id].type = REGULATOR_VOLTAGE;
 813                 pmic->desc[id].owner = THIS_MODULE;
 814                 pmic->desc[id].vsel_reg = PALMAS_BASE_TO_REG(PALMAS_LDO_BASE,
 815                                                 palmas_regs_info[id].vsel_addr);
 816                 pmic->desc[id].vsel_mask = PALMAS_LDO1_VOLTAGE_VSEL_MASK;
 817                 pmic->desc[id].enable_reg = PALMAS_BASE_TO_REG(PALMAS_LDO_BASE,
 818                                                 palmas_regs_info[id].ctrl_addr);
 819                 pmic->desc[id].enable_mask = PALMAS_LDO1_CTRL_MODE_ACTIVE;
 820
 821                 if (pdata)
 822                         config.init_data = pdata->reg_data[id];
 823                 else
 824                         config.init_data = NULL;
 825
 826                 config.of_node = palmas_matches[id].of_node;
 827
 828                 rdev = regulator_register(&pmic->desc[id], &config);
 829                 if (IS_ERR(rdev)) {
 830                         dev_err(&pdev->dev,
 831                                 "failed to register %s regulator\n",
 832                                 pdev->name);
 833                         ret = PTR_ERR(rdev);
 834                         goto err_unregister_regulator;
 835                 }
 836
 837                 /* Save regulator for cleanup */
 838                 pmic->rdev[id] = rdev;
 839
 840                 /* Initialise sleep/init values from platform data */
 841                 if (pdata) {
 842                         reg_init = pdata->reg_init[id];
 843                         if (reg_init) {
 844                                 ret = palmas_ldo_init(palmas, id, reg_init);
 845                                 if (ret) {
 846                                         regulator_unregister(pmic->rdev[id]);
 847                                         goto err_unregister_regulator;
 848                                 }
 849                         }
 850                 }
 851         }
 852
 853         return 0;
 854
 855 err_unregister_regulator:
 856         while (--id >= 0)
 857                 regulator_unregister(pmic->rdev[id]);
 858         return ret;
 859 }
 860
 861 static int __devexit palmas_remove(struct platform_device *pdev)
 862 {
 863         struct palmas_pmic *pmic = platform_get_drvdata(pdev);
 864         int id;
 865
 866         for (id = 0; id < PALMAS_NUM_REGS; id++)
 867                 regulator_unregister(pmic->rdev[id]);
 868         return 0;
 869 }
 870
 871 static struct of_device_id __devinitdata of_palmas_match_tbl[] = {
 872         { .compatible = "ti,palmas-pmic", },
 873         { /* end */ }
 874 };
 875
 876 static struct platform_driver palmas_driver = {
 877         .driver = {
 878                 .name = "palmas-pmic",
 879                 .of_match_table = of_palmas_match_tbl,
 880                 .owner = THIS_MODULE,
 881         },
 882         .probe = palmas_probe,
 883         .remove = __devexit_p(palmas_remove),
 884 };
 885
 886 static int __init palmas_init(void)
 887 {
 888         return platform_driver_register(&palmas_driver);
 889 }
 890 subsys_initcall(palmas_init);
 891
 892 static void __exit palmas_exit(void)
 893 {
 894         platform_driver_unregister(&palmas_driver);
 895 }
 896 module_exit(palmas_exit);
 897
 898 MODULE_AUTHOR("Graeme Gregory <gg@slimlogic.co.uk>");
 899 MODULE_DESCRIPTION("Palmas voltage regulator driver");
 900 MODULE_LICENSE("GPL");
 901 MODULE_ALIAS("platform:palmas-pmic");
 902 MODULE_DEVICE_TABLE(of, of_palmas_match_tbl);