drivers/regulator/palmas-regulator.c

   1 /*
   2  * Driver for Regulator part of Palmas PMIC Chips
   3  *
   4  * Copyright 2011-2013 Texas Instruments Inc.
   5  *
   6  * Author: Graeme Gregory <[email protected]>
   7  * Author: Ian Lartey <[email protected]>
   8  *
   9  *  This program is free software; you can redistribute it and/or modify it
  10  *  under  the terms of the GNU General  Public License as published by the
  11  *  Free Software Foundation;  either version 2 of the License, or (at your
  12  *  option) any later version.
  13  *
  14  */
  15
  16 #include <linux/kernel.h>
  17 #include <linux/module.h>
  18 #include <linux/init.h>
  19 #include <linux/err.h>
  20 #include <linux/platform_device.h>
  21 #include <linux/regulator/driver.h>
  22 #include <linux/regulator/machine.h>
  23 #include <linux/slab.h>
  24 #include <linux/regmap.h>
  25 #include <linux/mfd/palmas.h>
  26 #include <linux/of.h>
  27 #include <linux/of_platform.h>
  28 #include <linux/regulator/of_regulator.h>
  29
  30 struct regs_info {
  31         char    *name;
  32         char    *sname;
  33         u8      vsel_addr;
  34         u8      ctrl_addr;
  35         u8      tstep_addr;
  36         int     sleep_id;
  37 };
  38
  39 static const struct regs_info palmas_regs_info[] = {
  40         {
  41                 .name           = "SMPS12",
  42                 .sname          = "smps1-in",
  43                 .vsel_addr      = PALMAS_SMPS12_VOLTAGE,
  44                 .ctrl_addr      = PALMAS_SMPS12_CTRL,
  45                 .tstep_addr     = PALMAS_SMPS12_TSTEP,
  46                 .sleep_id       = PALMAS_EXTERNAL_REQSTR_ID_SMPS12,
  47         },
  48         {
  49                 .name           = "SMPS123",
  50                 .sname          = "smps1-in",
  51                 .vsel_addr      = PALMAS_SMPS12_VOLTAGE,
  52                 .ctrl_addr      = PALMAS_SMPS12_CTRL,
  53                 .tstep_addr     = PALMAS_SMPS12_TSTEP,
  54                 .sleep_id       = PALMAS_EXTERNAL_REQSTR_ID_SMPS12,
  55         },
  56         {
  57                 .name           = "SMPS3",
  58                 .sname          = "smps3-in",
  59                 .vsel_addr      = PALMAS_SMPS3_VOLTAGE,
  60                 .ctrl_addr      = PALMAS_SMPS3_CTRL,
  61                 .sleep_id       = PALMAS_EXTERNAL_REQSTR_ID_SMPS3,
  62         },
  63         {
  64                 .name           = "SMPS45",
  65                 .sname          = "smps4-in",
  66                 .vsel_addr      = PALMAS_SMPS45_VOLTAGE,
  67                 .ctrl_addr      = PALMAS_SMPS45_CTRL,
  68                 .tstep_addr     = PALMAS_SMPS45_TSTEP,
  69                 .sleep_id       = PALMAS_EXTERNAL_REQSTR_ID_SMPS45,
  70         },
  71         {
  72                 .name           = "SMPS457",
  73                 .sname          = "smps4-in",
  74                 .vsel_addr      = PALMAS_SMPS45_VOLTAGE,
  75                 .ctrl_addr      = PALMAS_SMPS45_CTRL,
  76                 .tstep_addr     = PALMAS_SMPS45_TSTEP,
  77                 .sleep_id       = PALMAS_EXTERNAL_REQSTR_ID_SMPS45,
  78         },
  79         {
  80                 .name           = "SMPS6",
  81                 .sname          = "smps6-in",
  82                 .vsel_addr      = PALMAS_SMPS6_VOLTAGE,
  83                 .ctrl_addr      = PALMAS_SMPS6_CTRL,
  84                 .tstep_addr     = PALMAS_SMPS6_TSTEP,
  85                 .sleep_id       = PALMAS_EXTERNAL_REQSTR_ID_SMPS6,
  86         },
  87         {
  88                 .name           = "SMPS7",
  89                 .sname          = "smps7-in",
  90                 .vsel_addr      = PALMAS_SMPS7_VOLTAGE,
  91                 .ctrl_addr      = PALMAS_SMPS7_CTRL,
  92                 .sleep_id       = PALMAS_EXTERNAL_REQSTR_ID_SMPS7,
  93         },
  94         {
  95                 .name           = "SMPS8",
  96                 .sname          = "smps8-in",
  97                 .vsel_addr      = PALMAS_SMPS8_VOLTAGE,
  98                 .ctrl_addr      = PALMAS_SMPS8_CTRL,
  99                 .tstep_addr     = PALMAS_SMPS8_TSTEP,
 100                 .sleep_id       = PALMAS_EXTERNAL_REQSTR_ID_SMPS8,
 101         },
 102         {
 103                 .name           = "SMPS9",
 104                 .sname          = "smps9-in",
 105                 .vsel_addr      = PALMAS_SMPS9_VOLTAGE,
 106                 .ctrl_addr      = PALMAS_SMPS9_CTRL,
 107                 .sleep_id       = PALMAS_EXTERNAL_REQSTR_ID_SMPS9,
 108         },
 109         {
 110                 .name           = "SMPS10_OUT2",
 111                 .sname          = "smps10-in",
 112                 .ctrl_addr      = PALMAS_SMPS10_CTRL,
 113                 .sleep_id       = PALMAS_EXTERNAL_REQSTR_ID_SMPS10,
 114         },
 115         {
 116                 .name           = "SMPS10_OUT1",
 117                 .sname          = "smps10-out2",
 118                 .ctrl_addr      = PALMAS_SMPS10_CTRL,
 119                 .sleep_id       = PALMAS_EXTERNAL_REQSTR_ID_SMPS10,
 120         },
 121         {
 122                 .name           = "LDO1",
 123                 .sname          = "ldo1-in",
 124                 .vsel_addr      = PALMAS_LDO1_VOLTAGE,
 125                 .ctrl_addr      = PALMAS_LDO1_CTRL,
 126                 .sleep_id       = PALMAS_EXTERNAL_REQSTR_ID_LDO1,
 127         },
 128         {
 129                 .name           = "LDO2",
 130                 .sname          = "ldo2-in",
 131                 .vsel_addr      = PALMAS_LDO2_VOLTAGE,
 132                 .ctrl_addr      = PALMAS_LDO2_CTRL,
 133                 .sleep_id       = PALMAS_EXTERNAL_REQSTR_ID_LDO2,
 134         },
 135         {
 136                 .name           = "LDO3",
 137                 .sname          = "ldo3-in",
 138                 .vsel_addr      = PALMAS_LDO3_VOLTAGE,
 139                 .ctrl_addr      = PALMAS_LDO3_CTRL,
 140                 .sleep_id       = PALMAS_EXTERNAL_REQSTR_ID_LDO3,
 141         },
 142         {
 143                 .name           = "LDO4",
 144                 .sname          = "ldo4-in",
 145                 .vsel_addr      = PALMAS_LDO4_VOLTAGE,
 146                 .ctrl_addr      = PALMAS_LDO4_CTRL,
 147                 .sleep_id       = PALMAS_EXTERNAL_REQSTR_ID_LDO4,
 148         },
 149         {
 150                 .name           = "LDO5",
 151                 .sname          = "ldo5-in",
 152                 .vsel_addr      = PALMAS_LDO5_VOLTAGE,
 153                 .ctrl_addr      = PALMAS_LDO5_CTRL,
 154                 .sleep_id       = PALMAS_EXTERNAL_REQSTR_ID_LDO5,
 155         },
 156         {
 157                 .name           = "LDO6",
 158                 .sname          = "ldo6-in",
 159                 .vsel_addr      = PALMAS_LDO6_VOLTAGE,
 160                 .ctrl_addr      = PALMAS_LDO6_CTRL,
 161                 .sleep_id       = PALMAS_EXTERNAL_REQSTR_ID_LDO6,
 162         },
 163         {
 164                 .name           = "LDO7",
 165                 .sname          = "ldo7-in",
 166                 .vsel_addr      = PALMAS_LDO7_VOLTAGE,
 167                 .ctrl_addr      = PALMAS_LDO7_CTRL,
 168                 .sleep_id       = PALMAS_EXTERNAL_REQSTR_ID_LDO7,
 169         },
 170         {
 171                 .name           = "LDO8",
 172                 .sname          = "ldo8-in",
 173                 .vsel_addr      = PALMAS_LDO8_VOLTAGE,
 174                 .ctrl_addr      = PALMAS_LDO8_CTRL,
 175                 .sleep_id       = PALMAS_EXTERNAL_REQSTR_ID_LDO8,
 176         },
 177         {
 178                 .name           = "LDO9",
 179                 .sname          = "ldo9-in",
 180                 .vsel_addr      = PALMAS_LDO9_VOLTAGE,
 181                 .ctrl_addr      = PALMAS_LDO9_CTRL,
 182                 .sleep_id       = PALMAS_EXTERNAL_REQSTR_ID_LDO9,
 183         },
 184         {
 185                 .name           = "LDOLN",
 186                 .sname          = "ldoln-in",
 187                 .vsel_addr      = PALMAS_LDOLN_VOLTAGE,
 188                 .ctrl_addr      = PALMAS_LDOLN_CTRL,
 189                 .sleep_id       = PALMAS_EXTERNAL_REQSTR_ID_LDOLN,
 190         },
 191         {
 192                 .name           = "LDOUSB",
 193                 .sname          = "ldousb-in",
 194                 .vsel_addr      = PALMAS_LDOUSB_VOLTAGE,
 195                 .ctrl_addr      = PALMAS_LDOUSB_CTRL,
 196                 .sleep_id       = PALMAS_EXTERNAL_REQSTR_ID_LDOUSB,
 197         },
 198         {
 199                 .name           = "REGEN1",
 200                 .ctrl_addr      = PALMAS_REGEN1_CTRL,
 201                 .sleep_id       = PALMAS_EXTERNAL_REQSTR_ID_REGEN1,
 202         },
 203         {
 204                 .name           = "REGEN2",
 205                 .ctrl_addr      = PALMAS_REGEN2_CTRL,
 206                 .sleep_id       = PALMAS_EXTERNAL_REQSTR_ID_REGEN2,
 207         },
 208         {
 209                 .name           = "REGEN3",
 210                 .ctrl_addr      = PALMAS_REGEN3_CTRL,
 211                 .sleep_id       = PALMAS_EXTERNAL_REQSTR_ID_REGEN3,
 212         },
 213         {
 214                 .name           = "SYSEN1",
 215                 .ctrl_addr      = PALMAS_SYSEN1_CTRL,
 216                 .sleep_id       = PALMAS_EXTERNAL_REQSTR_ID_SYSEN1,
 217         },
 218         {
 219                 .name           = "SYSEN2",
 220                 .ctrl_addr      = PALMAS_SYSEN2_CTRL,
 221                 .sleep_id       = PALMAS_EXTERNAL_REQSTR_ID_SYSEN2,
 222         },
 223 };
 224
 225 static unsigned int palmas_smps_ramp_delay[4] = {0, 10000, 5000, 2500};
 226
 227 #define SMPS_CTRL_MODE_OFF              0x00
 228 #define SMPS_CTRL_MODE_ON               0x01
 229 #define SMPS_CTRL_MODE_ECO              0x02
 230 #define SMPS_CTRL_MODE_PWM              0x03
 231
 232 #define PALMAS_SMPS_NUM_VOLTAGES        122
 233 #define PALMAS_SMPS10_NUM_VOLTAGES      2
 234 #define PALMAS_LDO_NUM_VOLTAGES         50
 235
 236 #define SMPS10_VSEL                     (1<<3)
 237 #define SMPS10_BOOST_EN                 (1<<2)
 238 #define SMPS10_BYPASS_EN                (1<<1)
 239 #define SMPS10_SWITCH_EN                (1<<0)
 240
 241 #define REGULATOR_SLAVE                 0
 242
 243 static int palmas_smps_read(struct palmas *palmas, unsigned int reg,
 244                 unsigned int *dest)
 245 {
 246         unsigned int addr;
 247
 248         addr = PALMAS_BASE_TO_REG(PALMAS_SMPS_BASE, reg);
 249
 250         return regmap_read(palmas->regmap[REGULATOR_SLAVE], addr, dest);
 251 }
 252
 253 static int palmas_smps_write(struct palmas *palmas, unsigned int reg,
 254                 unsigned int value)
 255 {
 256         unsigned int addr;
 257
 258         addr = PALMAS_BASE_TO_REG(PALMAS_SMPS_BASE, reg);
 259
 260         return regmap_write(palmas->regmap[REGULATOR_SLAVE], addr, value);
 261 }
 262
 263 static int palmas_ldo_read(struct palmas *palmas, unsigned int reg,
 264                 unsigned int *dest)
 265 {
 266         unsigned int addr;
 267
 268         addr = PALMAS_BASE_TO_REG(PALMAS_LDO_BASE, reg);
 269
 270         return regmap_read(palmas->regmap[REGULATOR_SLAVE], addr, dest);
 271 }
 272
 273 static int palmas_ldo_write(struct palmas *palmas, unsigned int reg,
 274                 unsigned int value)
 275 {
 276         unsigned int addr;
 277
 278         addr = PALMAS_BASE_TO_REG(PALMAS_LDO_BASE, reg);
 279
 280         return regmap_write(palmas->regmap[REGULATOR_SLAVE], addr, value);
 281 }
 282
 283 static int palmas_is_enabled_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
 291         reg &= PALMAS_SMPS12_CTRL_STATUS_MASK;
 292         reg >>= PALMAS_SMPS12_CTRL_STATUS_SHIFT;
 293
 294         return !!(reg);
 295 }
 296
 297 static int palmas_enable_smps(struct regulator_dev *dev)
 298 {
 299         struct palmas_pmic *pmic = rdev_get_drvdata(dev);
 300         int id = rdev_get_id(dev);
 301         unsigned int reg;
 302
 303         palmas_smps_read(pmic->palmas, palmas_regs_info[id].ctrl_addr, &reg);
 304
 305         reg &= ~PALMAS_SMPS12_CTRL_MODE_ACTIVE_MASK;
 306         if (pmic->current_reg_mode[id])
 307                 reg |= pmic->current_reg_mode[id];
 308         else
 309                 reg |= SMPS_CTRL_MODE_ON;
 310
 311         palmas_smps_write(pmic->palmas, palmas_regs_info[id].ctrl_addr, reg);
 312
 313         return 0;
 314 }
 315
 316 static int palmas_disable_smps(struct regulator_dev *dev)
 317 {
 318         struct palmas_pmic *pmic = rdev_get_drvdata(dev);
 319         int id = rdev_get_id(dev);
 320         unsigned int reg;
 321
 322         palmas_smps_read(pmic->palmas, palmas_regs_info[id].ctrl_addr, &reg);
 323
 324         reg &= ~PALMAS_SMPS12_CTRL_MODE_ACTIVE_MASK;
 325
 326         palmas_smps_write(pmic->palmas, palmas_regs_info[id].ctrl_addr, reg);
 327
 328         return 0;
 329 }
 330
 331 static int palmas_set_mode_smps(struct regulator_dev *dev, unsigned int mode)
 332 {
 333         struct palmas_pmic *pmic = rdev_get_drvdata(dev);
 334         int id = rdev_get_id(dev);
 335         unsigned int reg;
 336         bool rail_enable = true;
 337
 338         palmas_smps_read(pmic->palmas, palmas_regs_info[id].ctrl_addr, &reg);
 339         reg &= ~PALMAS_SMPS12_CTRL_MODE_ACTIVE_MASK;
 340
 341         if (reg == SMPS_CTRL_MODE_OFF)
 342                 rail_enable = false;
 343
 344         switch (mode) {
 345         case REGULATOR_MODE_NORMAL:
 346                 reg |= SMPS_CTRL_MODE_ON;
 347                 break;
 348         case REGULATOR_MODE_IDLE:
 349                 reg |= SMPS_CTRL_MODE_ECO;
 350                 break;
 351         case REGULATOR_MODE_FAST:
 352                 reg |= SMPS_CTRL_MODE_PWM;
 353                 break;
 354         default:
 355                 return -EINVAL;
 356         }
 357
 358         pmic->current_reg_mode[id] = reg & PALMAS_SMPS12_CTRL_MODE_ACTIVE_MASK;
 359         if (rail_enable)
 360                 palmas_smps_write(pmic->palmas,
 361                         palmas_regs_info[id].ctrl_addr, reg);
 362         return 0;
 363 }
 364
 365 static unsigned int palmas_get_mode_smps(struct regulator_dev *dev)
 366 {
 367         struct palmas_pmic *pmic = rdev_get_drvdata(dev);
 368         int id = rdev_get_id(dev);
 369         unsigned int reg;
 370
 371         reg = pmic->current_reg_mode[id] & PALMAS_SMPS12_CTRL_MODE_ACTIVE_MASK;
 372
 373         switch (reg) {
 374         case SMPS_CTRL_MODE_ON:
 375                 return REGULATOR_MODE_NORMAL;
 376         case SMPS_CTRL_MODE_ECO:
 377                 return REGULATOR_MODE_IDLE;
 378         case SMPS_CTRL_MODE_PWM:
 379                 return REGULATOR_MODE_FAST;
 380         }
 381
 382         return 0;
 383 }
 384
 385 static int palmas_list_voltage_smps(struct regulator_dev *dev,
 386                                         unsigned selector)
 387 {
 388         struct palmas_pmic *pmic = rdev_get_drvdata(dev);
 389         int id = rdev_get_id(dev);
 390         int mult = 1;
 391
 392         /* Read the multiplier set in VSEL register to return
 393          * the correct voltage.
 394          */
 395         if (pmic->range[id])
 396                 mult = 2;
 397
 398         if (selector == 0)
 399                 return 0;
 400         else if (selector < 6)
 401                 return 500000 * mult;
 402         else
 403                 /* Voltage is linear mapping starting from selector 6,
 404                  * volt = (0.49V + ((selector - 5) * 0.01V)) * RANGE
 405                  * RANGE is either x1 or x2
 406                  */
 407                 return (490000 + ((selector - 5) * 10000)) * mult;
 408 }
 409
 410 static int palmas_map_voltage_smps(struct regulator_dev *rdev,
 411                 int min_uV, int max_uV)
 412 {
 413         struct palmas_pmic *pmic = rdev_get_drvdata(rdev);
 414         int id = rdev_get_id(rdev);
 415         int ret, voltage;
 416
 417         if (min_uV == 0)
 418                 return 0;
 419
 420         if (pmic->range[id]) { /* RANGE is x2 */
 421                 if (min_uV < 1000000)
 422                         min_uV = 1000000;
 423                 ret = DIV_ROUND_UP(min_uV - 1000000, 20000) + 6;
 424         } else {                /* RANGE is x1 */
 425                 if (min_uV < 500000)
 426                         min_uV = 500000;
 427                 ret = DIV_ROUND_UP(min_uV - 500000, 10000) + 6;
 428         }
 429
 430         /* Map back into a voltage to verify we're still in bounds */
 431         voltage = palmas_list_voltage_smps(rdev, ret);
 432         if (voltage < min_uV || voltage > max_uV)
 433                 return -EINVAL;
 434
 435         return ret;
 436 }
 437
 438 static int palma_smps_set_voltage_smps_time_sel(struct regulator_dev *rdev,
 439         unsigned int old_selector, unsigned int new_selector)
 440 {
 441         struct palmas_pmic *pmic = rdev_get_drvdata(rdev);
 442         int id = rdev_get_id(rdev);
 443         int old_uv, new_uv;
 444         unsigned int ramp_delay = pmic->ramp_delay[id];
 445
 446         if (!ramp_delay)
 447                 return 0;
 448
 449         old_uv = palmas_list_voltage_smps(rdev, old_selector);
 450         if (old_uv < 0)
 451                 return old_uv;
 452
 453         new_uv = palmas_list_voltage_smps(rdev, new_selector);
 454         if (new_uv < 0)
 455                 return new_uv;
 456
 457         return DIV_ROUND_UP(abs(old_uv - new_uv), ramp_delay);
 458 }
 459
 460 static int palmas_smps_set_ramp_delay(struct regulator_dev *rdev,
 461                  int ramp_delay)
 462 {
 463         struct palmas_pmic *pmic = rdev_get_drvdata(rdev);
 464         int id = rdev_get_id(rdev);
 465         unsigned int reg = 0;
 466         unsigned int addr = palmas_regs_info[id].tstep_addr;
 467         int ret;
 468
 469         /* SMPS3 and SMPS7 do not have tstep_addr setting */
 470         switch (id) {
 471         case PALMAS_REG_SMPS3:
 472         case PALMAS_REG_SMPS7:
 473                 return 0;
 474         }
 475
 476         if (ramp_delay <= 0)
 477                 reg = 0;
 478         else if (ramp_delay <= 2500)
 479                 reg = 3;
 480         else if (ramp_delay <= 5000)
 481                 reg = 2;
 482         else
 483                 reg = 1;
 484
 485         ret = palmas_smps_write(pmic->palmas, addr, reg);
 486         if (ret < 0) {
 487                 dev_err(pmic->palmas->dev, "TSTEP write failed: %d\n", ret);
 488                 return ret;
 489         }
 490
 491         pmic->ramp_delay[id] = palmas_smps_ramp_delay[reg];
 492         return ret;
 493 }
 494
 495 static struct regulator_ops palmas_ops_smps = {
 496         .is_enabled             = palmas_is_enabled_smps,
 497         .enable                 = palmas_enable_smps,
 498         .disable                = palmas_disable_smps,
 499         .set_mode               = palmas_set_mode_smps,
 500         .get_mode               = palmas_get_mode_smps,
 501         .get_voltage_sel        = regulator_get_voltage_sel_regmap,
 502         .set_voltage_sel        = regulator_set_voltage_sel_regmap,
 503         .list_voltage           = palmas_list_voltage_smps,
 504         .map_voltage            = palmas_map_voltage_smps,
 505         .set_voltage_time_sel   = palma_smps_set_voltage_smps_time_sel,
 506         .set_ramp_delay         = palmas_smps_set_ramp_delay,
 507 };
 508
 509 static struct regulator_ops palmas_ops_ext_control_smps = {
 510         .set_mode               = palmas_set_mode_smps,
 511         .get_mode               = palmas_get_mode_smps,
 512         .get_voltage_sel        = regulator_get_voltage_sel_regmap,
 513         .set_voltage_sel        = regulator_set_voltage_sel_regmap,
 514         .list_voltage           = palmas_list_voltage_smps,
 515         .map_voltage            = palmas_map_voltage_smps,
 516         .set_voltage_time_sel   = palma_smps_set_voltage_smps_time_sel,
 517         .set_ramp_delay         = palmas_smps_set_ramp_delay,
 518 };
 519
 520 static struct regulator_ops palmas_ops_smps10 = {
 521         .is_enabled             = regulator_is_enabled_regmap,
 522         .enable                 = regulator_enable_regmap,
 523         .disable                = regulator_disable_regmap,
 524         .get_voltage_sel        = regulator_get_voltage_sel_regmap,
 525         .set_voltage_sel        = regulator_set_voltage_sel_regmap,
 526         .list_voltage           = regulator_list_voltage_linear,
 527         .map_voltage            = regulator_map_voltage_linear,
 528         .set_bypass             = regulator_set_bypass_regmap,
 529         .get_bypass             = regulator_get_bypass_regmap,
 530 };
 531
 532 static int palmas_is_enabled_ldo(struct regulator_dev *dev)
 533 {
 534         struct palmas_pmic *pmic = rdev_get_drvdata(dev);
 535         int id = rdev_get_id(dev);
 536         unsigned int reg;
 537
 538         palmas_ldo_read(pmic->palmas, palmas_regs_info[id].ctrl_addr, &reg);
 539
 540         reg &= PALMAS_LDO1_CTRL_STATUS;
 541
 542         return !!(reg);
 543 }
 544
 545 static struct regulator_ops palmas_ops_ldo = {
 546         .is_enabled             = palmas_is_enabled_ldo,
 547         .enable                 = regulator_enable_regmap,
 548         .disable                = regulator_disable_regmap,
 549         .get_voltage_sel        = regulator_get_voltage_sel_regmap,
 550         .set_voltage_sel        = regulator_set_voltage_sel_regmap,
 551         .list_voltage           = regulator_list_voltage_linear,
 552         .map_voltage            = regulator_map_voltage_linear,
 553 };
 554
 555 static struct regulator_ops palmas_ops_ext_control_ldo = {
 556         .get_voltage_sel        = regulator_get_voltage_sel_regmap,
 557         .set_voltage_sel        = regulator_set_voltage_sel_regmap,
 558         .list_voltage           = regulator_list_voltage_linear,
 559         .map_voltage            = regulator_map_voltage_linear,
 560 };
 561
 562 static struct regulator_ops palmas_ops_extreg = {
 563         .is_enabled             = regulator_is_enabled_regmap,
 564         .enable                 = regulator_enable_regmap,
 565         .disable                = regulator_disable_regmap,
 566 };
 567
 568 static struct regulator_ops palmas_ops_ext_control_extreg = {
 569 };
 570
 571 static int palmas_regulator_config_external(struct palmas *palmas, int id,
 572                 struct palmas_reg_init *reg_init)
 573 {
 574         int sleep_id = palmas_regs_info[id].sleep_id;
 575         int ret;
 576
 577         ret = palmas_ext_control_req_config(palmas, sleep_id,
 578                                         reg_init->roof_floor, true);
 579         if (ret < 0)
 580                 dev_err(palmas->dev,
 581                         "Ext control config for regulator %d failed %d\n",
 582                         id, ret);
 583         return ret;
 584 }
 585
 586 /*
 587  * setup the hardware based sleep configuration of the SMPS/LDO regulators
 588  * from the platform data. This is different to the software based control
 589  * supported by the regulator framework as it is controlled by toggling
 590  * pins on the PMIC such as PREQ, SYSEN, ...
 591  */
 592 static int palmas_smps_init(struct palmas *palmas, int id,
 593                 struct palmas_reg_init *reg_init)
 594 {
 595         unsigned int reg;
 596         unsigned int addr;
 597         int ret;
 598
 599         addr = palmas_regs_info[id].ctrl_addr;
 600
 601         ret = palmas_smps_read(palmas, addr, &reg);
 602         if (ret)
 603                 return ret;
 604
 605         switch (id) {
 606         case PALMAS_REG_SMPS10_OUT1:
 607         case PALMAS_REG_SMPS10_OUT2:
 608                 reg &= ~PALMAS_SMPS10_CTRL_MODE_SLEEP_MASK;
 609                 if (reg_init->mode_sleep)
 610                         reg |= reg_init->mode_sleep <<
 611                                         PALMAS_SMPS10_CTRL_MODE_SLEEP_SHIFT;
 612                 break;
 613         default:
 614                 if (reg_init->warm_reset)
 615                         reg |= PALMAS_SMPS12_CTRL_WR_S;
 616                 else
 617                         reg &= ~PALMAS_SMPS12_CTRL_WR_S;
 618
 619                 if (reg_init->roof_floor)
 620                         reg |= PALMAS_SMPS12_CTRL_ROOF_FLOOR_EN;
 621                 else
 622                         reg &= ~PALMAS_SMPS12_CTRL_ROOF_FLOOR_EN;
 623
 624                 reg &= ~PALMAS_SMPS12_CTRL_MODE_SLEEP_MASK;
 625                 if (reg_init->mode_sleep)
 626                         reg |= reg_init->mode_sleep <<
 627                                         PALMAS_SMPS12_CTRL_MODE_SLEEP_SHIFT;
 628         }
 629
 630         ret = palmas_smps_write(palmas, addr, reg);
 631         if (ret)
 632                 return ret;
 633
 634         if (palmas_regs_info[id].vsel_addr && reg_init->vsel) {
 635                 addr = palmas_regs_info[id].vsel_addr;
 636
 637                 reg = reg_init->vsel;
 638
 639                 ret = palmas_smps_write(palmas, addr, reg);
 640                 if (ret)
 641                         return ret;
 642         }
 643
 644         if (reg_init->roof_floor && (id != PALMAS_REG_SMPS10_OUT1) &&
 645                         (id != PALMAS_REG_SMPS10_OUT2)) {
 646                 /* Enable externally controlled regulator */
 647                 addr = palmas_regs_info[id].ctrl_addr;
 648                 ret = palmas_smps_read(palmas, addr, &reg);
 649                 if (ret < 0)
 650                         return ret;
 651
 652                 if (!(reg & PALMAS_SMPS12_CTRL_MODE_ACTIVE_MASK)) {
 653                         reg |= SMPS_CTRL_MODE_ON;
 654                         ret = palmas_smps_write(palmas, addr, reg);
 655                         if (ret < 0)
 656                                 return ret;
 657                 }
 658                 return palmas_regulator_config_external(palmas, id, reg_init);
 659         }
 660         return 0;
 661 }
 662
 663 static int palmas_ldo_init(struct palmas *palmas, int id,
 664                 struct palmas_reg_init *reg_init)
 665 {
 666         unsigned int reg;
 667         unsigned int addr;
 668         int ret;
 669
 670         addr = palmas_regs_info[id].ctrl_addr;
 671
 672         ret = palmas_ldo_read(palmas, addr, &reg);
 673         if (ret)
 674                 return ret;
 675
 676         if (reg_init->warm_reset)
 677                 reg |= PALMAS_LDO1_CTRL_WR_S;
 678         else
 679                 reg &= ~PALMAS_LDO1_CTRL_WR_S;
 680
 681         if (reg_init->mode_sleep)
 682                 reg |= PALMAS_LDO1_CTRL_MODE_SLEEP;
 683         else
 684                 reg &= ~PALMAS_LDO1_CTRL_MODE_SLEEP;
 685
 686         ret = palmas_ldo_write(palmas, addr, reg);
 687         if (ret)
 688                 return ret;
 689
 690         if (reg_init->roof_floor) {
 691                 /* Enable externally controlled regulator */
 692                 addr = palmas_regs_info[id].ctrl_addr;
 693                 ret = palmas_update_bits(palmas, PALMAS_LDO_BASE,
 694                                 addr, PALMAS_LDO1_CTRL_MODE_ACTIVE,
 695                                 PALMAS_LDO1_CTRL_MODE_ACTIVE);
 696                 if (ret < 0) {
 697                         dev_err(palmas->dev,
 698                                 "LDO Register 0x%02x update failed %d\n",
 699                                 addr, ret);
 700                         return ret;
 701                 }
 702                 return palmas_regulator_config_external(palmas, id, reg_init);
 703         }
 704         return 0;
 705 }
 706
 707 static int palmas_extreg_init(struct palmas *palmas, int id,
 708                 struct palmas_reg_init *reg_init)
 709 {
 710         unsigned int addr;
 711         int ret;
 712         unsigned int val = 0;
 713
 714         addr = palmas_regs_info[id].ctrl_addr;
 715
 716         if (reg_init->mode_sleep)
 717                 val = PALMAS_REGEN1_CTRL_MODE_SLEEP;
 718
 719         ret = palmas_update_bits(palmas, PALMAS_RESOURCE_BASE,
 720                         addr, PALMAS_REGEN1_CTRL_MODE_SLEEP, val);
 721         if (ret < 0) {
 722                 dev_err(palmas->dev, "Resource reg 0x%02x update failed %d\n",
 723                         addr, ret);
 724                 return ret;
 725         }
 726
 727         if (reg_init->roof_floor) {
 728                 /* Enable externally controlled regulator */
 729                 addr = palmas_regs_info[id].ctrl_addr;
 730                 ret = palmas_update_bits(palmas, PALMAS_RESOURCE_BASE,
 731                                 addr, PALMAS_REGEN1_CTRL_MODE_ACTIVE,
 732                                 PALMAS_REGEN1_CTRL_MODE_ACTIVE);
 733                 if (ret < 0) {
 734                         dev_err(palmas->dev,
 735                                 "Resource Register 0x%02x update failed %d\n",
 736                                 addr, ret);
 737                         return ret;
 738                 }
 739                 return palmas_regulator_config_external(palmas, id, reg_init);
 740         }
 741         return 0;
 742 }
 743
 744 static void palmas_enable_ldo8_track(struct palmas *palmas)
 745 {
 746         unsigned int reg;
 747         unsigned int addr;
 748         int ret;
 749
 750         addr = palmas_regs_info[PALMAS_REG_LDO8].ctrl_addr;
 751
 752         ret = palmas_ldo_read(palmas, addr, &reg);
 753         if (ret) {
 754                 dev_err(palmas->dev, "Error in reading ldo8 control reg\n");
 755                 return;
 756         }
 757
 758         reg |= PALMAS_LDO8_CTRL_LDO_TRACKING_EN;
 759         ret = palmas_ldo_write(palmas, addr, reg);
 760         if (ret < 0) {
 761                 dev_err(palmas->dev, "Error in enabling tracking mode\n");
 762                 return;
 763         }
 764         /*
 765          * When SMPS45 is set to off and LDO8 tracking is enabled, the LDO8
 766          * output is defined by the LDO8_VOLTAGE.VSEL register divided by two,
 767          * and can be set from 0.45 to 1.65 V.
 768          */
 769         addr = palmas_regs_info[PALMAS_REG_LDO8].vsel_addr;
 770         ret = palmas_ldo_read(palmas, addr, &reg);
 771         if (ret) {
 772                 dev_err(palmas->dev, "Error in reading ldo8 voltage reg\n");
 773                 return;
 774         }
 775
 776         reg = (reg << 1) & PALMAS_LDO8_VOLTAGE_VSEL_MASK;
 777         ret = palmas_ldo_write(palmas, addr, reg);
 778         if (ret < 0)
 779                 dev_err(palmas->dev, "Error in setting ldo8 voltage reg\n");
 780
 781         return;
 782 }
 783
 784 static struct of_regulator_match palmas_matches[] = {
 785         { .name = "smps12", },
 786         { .name = "smps123", },
 787         { .name = "smps3", },
 788         { .name = "smps45", },
 789         { .name = "smps457", },
 790         { .name = "smps6", },
 791         { .name = "smps7", },
 792         { .name = "smps8", },
 793         { .name = "smps9", },
 794         { .name = "smps10_out2", },
 795         { .name = "smps10_out1", },
 796         { .name = "ldo1", },
 797         { .name = "ldo2", },
 798         { .name = "ldo3", },
 799         { .name = "ldo4", },
 800         { .name = "ldo5", },
 801         { .name = "ldo6", },
 802         { .name = "ldo7", },
 803         { .name = "ldo8", },
 804         { .name = "ldo9", },
 805         { .name = "ldoln", },
 806         { .name = "ldousb", },
 807         { .name = "regen1", },
 808         { .name = "regen2", },
 809         { .name = "regen3", },
 810         { .name = "sysen1", },
 811         { .name = "sysen2", },
 812 };
 813
 814 static void palmas_dt_to_pdata(struct device *dev,
 815                 struct device_node *node,
 816                 struct palmas_pmic_platform_data *pdata)
 817 {
 818         struct device_node *regulators;
 819         u32 prop;
 820         int idx, ret;
 821
 822         node = of_node_get(node);
 823         regulators = of_get_child_by_name(node, "regulators");
 824         if (!regulators) {
 825                 dev_info(dev, "regulator node not found\n");
 826                 return;
 827         }
 828
 829         ret = of_regulator_match(dev, regulators, palmas_matches,
 830                         PALMAS_NUM_REGS);
 831         of_node_put(regulators);
 832         if (ret < 0) {
 833                 dev_err(dev, "Error parsing regulator init data: %d\n", ret);
 834                 return;
 835         }
 836
 837         for (idx = 0; idx < PALMAS_NUM_REGS; idx++) {
 838                 if (!palmas_matches[idx].init_data ||
 839                                 !palmas_matches[idx].of_node)
 840                         continue;
 841
 842                 pdata->reg_data[idx] = palmas_matches[idx].init_data;
 843
 844                 pdata->reg_init[idx] = devm_kzalloc(dev,
 845                                 sizeof(struct palmas_reg_init), GFP_KERNEL);
 846
 847                 pdata->reg_init[idx]->warm_reset =
 848                         of_property_read_bool(palmas_matches[idx].of_node,
 849                                              "ti,warm-reset");
 850
 851                 ret = of_property_read_u32(palmas_matches[idx].of_node,
 852                                               "ti,roof-floor", &prop);
 853                 /* EINVAL: Property not found */
 854                 if (ret != -EINVAL) {
 855                         int econtrol;
 856
 857                         /* use default value, when no value is specified */
 858                         econtrol = PALMAS_EXT_CONTROL_NSLEEP;
 859                         if (!ret) {
 860                                 switch (prop) {
 861                                 case 1:
 862                                         econtrol = PALMAS_EXT_CONTROL_ENABLE1;
 863                                         break;
 864                                 case 2:
 865                                         econtrol = PALMAS_EXT_CONTROL_ENABLE2;
 866                                         break;
 867                                 case 3:
 868                                         econtrol = PALMAS_EXT_CONTROL_NSLEEP;
 869                                         break;
 870                                 default:
 871                                         WARN_ON(1);
 872                                         dev_warn(dev,
 873                                         "%s: Invalid roof-floor option: %u\n",
 874                                              palmas_matches[idx].name, prop);
 875                                         break;
 876                                 }
 877                         }
 878                         pdata->reg_init[idx]->roof_floor = econtrol;
 879                 }
 880
 881                 ret = of_property_read_u32(palmas_matches[idx].of_node,
 882                                 "ti,mode-sleep", &prop);
 883                 if (!ret)
 884                         pdata->reg_init[idx]->mode_sleep = prop;
 885
 886                 ret = of_property_read_bool(palmas_matches[idx].of_node,
 887                                             "ti,smps-range");
 888                 if (ret)
 889                         pdata->reg_init[idx]->vsel =
 890                                 PALMAS_SMPS12_VOLTAGE_RANGE;
 891
 892                 if (idx == PALMAS_REG_LDO8)
 893                         pdata->enable_ldo8_tracking = of_property_read_bool(
 894                                                 palmas_matches[idx].of_node,
 895                                                 "ti,enable-ldo8-tracking");
 896         }
 897
 898         pdata->ldo6_vibrator = of_property_read_bool(node, "ti,ldo6-vibrator");
 899 }
 900
 901
 902 static int palmas_regulators_probe(struct platform_device *pdev)
 903 {
 904         struct palmas *palmas = dev_get_drvdata(pdev->dev.parent);
 905         struct palmas_pmic_platform_data *pdata = dev_get_platdata(&pdev->dev);
 906         struct device_node *node = pdev->dev.of_node;
 907         struct regulator_dev *rdev;
 908         struct regulator_config config = { };
 909         struct palmas_pmic *pmic;
 910         struct palmas_reg_init *reg_init;
 911         int id = 0, ret;
 912         unsigned int addr, reg;
 913
 914         if (node && !pdata) {
 915                 pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL);
 916
 917                 if (!pdata)
 918                         return -ENOMEM;
 919
 920                 palmas_dt_to_pdata(&pdev->dev, node, pdata);
 921         }
 922
 923         pmic = devm_kzalloc(&pdev->dev, sizeof(*pmic), GFP_KERNEL);
 924         if (!pmic)
 925                 return -ENOMEM;
 926
 927         pmic->dev = &pdev->dev;
 928         pmic->palmas = palmas;
 929         palmas->pmic = pmic;
 930         platform_set_drvdata(pdev, pmic);
 931
 932         ret = palmas_smps_read(palmas, PALMAS_SMPS_CTRL, &reg);
 933         if (ret)
 934                 return ret;
 935
 936         if (reg & PALMAS_SMPS_CTRL_SMPS12_SMPS123_EN)
 937                 pmic->smps123 = 1;
 938
 939         if (reg & PALMAS_SMPS_CTRL_SMPS45_SMPS457_EN)
 940                 pmic->smps457 = 1;
 941
 942         config.regmap = palmas->regmap[REGULATOR_SLAVE];
 943         config.dev = &pdev->dev;
 944         config.driver_data = pmic;
 945
 946         for (id = 0; id < PALMAS_REG_LDO1; id++) {
 947                 bool ramp_delay_support = false;
 948
 949                 /*
 950                  * Miss out regulators which are not available due
 951                  * to slaving configurations.
 952                  */
 953                 switch (id) {
 954                 case PALMAS_REG_SMPS12:
 955                 case PALMAS_REG_SMPS3:
 956                         if (pmic->smps123)
 957                                 continue;
 958                         if (id == PALMAS_REG_SMPS12)
 959                                 ramp_delay_support = true;
 960                         break;
 961                 case PALMAS_REG_SMPS123:
 962                         if (!pmic->smps123)
 963                                 continue;
 964                         ramp_delay_support = true;
 965                         break;
 966                 case PALMAS_REG_SMPS45:
 967                 case PALMAS_REG_SMPS7:
 968                         if (pmic->smps457)
 969                                 continue;
 970                         if (id == PALMAS_REG_SMPS45)
 971                                 ramp_delay_support = true;
 972                         break;
 973                 case PALMAS_REG_SMPS457:
 974                         if (!pmic->smps457)
 975                                 continue;
 976                         ramp_delay_support = true;
 977                         break;
 978                 case PALMAS_REG_SMPS10_OUT1:
 979                 case PALMAS_REG_SMPS10_OUT2:
 980                         if (!PALMAS_PMIC_HAS(palmas, SMPS10_BOOST))
 981                                 continue;
 982                 }
 983
 984                 if ((id == PALMAS_REG_SMPS6) || (id == PALMAS_REG_SMPS8))
 985                         ramp_delay_support = true;
 986
 987                 if (ramp_delay_support) {
 988                         addr = palmas_regs_info[id].tstep_addr;
 989                         ret = palmas_smps_read(pmic->palmas, addr, &reg);
 990                         if (ret < 0) {
 991                                 dev_err(&pdev->dev,
 992                                         "reading TSTEP reg failed: %d\n", ret);
 993                                 return ret;
 994                         }
 995                         pmic->desc[id].ramp_delay =
 996                                         palmas_smps_ramp_delay[reg & 0x3];
 997                         pmic->ramp_delay[id] = pmic->desc[id].ramp_delay;
 998                 }
 999
1000                 /* Initialise sleep/init values from platform data */
1001                 if (pdata && pdata->reg_init[id]) {
1002                         reg_init = pdata->reg_init[id];
1003                         ret = palmas_smps_init(palmas, id, reg_init);
1004                         if (ret)
1005                                 return ret;
1006                 } else {
1007                         reg_init = NULL;
1008                 }
1009
1010                 /* Register the regulators */
1011                 pmic->desc[id].name = palmas_regs_info[id].name;
1012                 pmic->desc[id].id = id;
1013
1014                 switch (id) {
1015                 case PALMAS_REG_SMPS10_OUT1:
1016                 case PALMAS_REG_SMPS10_OUT2:
1017                         pmic->desc[id].n_voltages = PALMAS_SMPS10_NUM_VOLTAGES;
1018                         pmic->desc[id].ops = &palmas_ops_smps10;
1019                         pmic->desc[id].vsel_reg =
1020                                         PALMAS_BASE_TO_REG(PALMAS_SMPS_BASE,
1021                                                         PALMAS_SMPS10_CTRL);
1022                         pmic->desc[id].vsel_mask = SMPS10_VSEL;
1023                         pmic->desc[id].enable_reg =
1024                                         PALMAS_BASE_TO_REG(PALMAS_SMPS_BASE,
1025                                                         PALMAS_SMPS10_CTRL);
1026                         if (id == PALMAS_REG_SMPS10_OUT1)
1027                                 pmic->desc[id].enable_mask = SMPS10_SWITCH_EN;
1028                         else
1029                                 pmic->desc[id].enable_mask = SMPS10_BOOST_EN;
1030                         pmic->desc[id].bypass_reg =
1031                                         PALMAS_BASE_TO_REG(PALMAS_SMPS_BASE,
1032                                                         PALMAS_SMPS10_CTRL);
1033                         pmic->desc[id].bypass_mask = SMPS10_BYPASS_EN;
1034                         pmic->desc[id].min_uV = 3750000;
1035                         pmic->desc[id].uV_step = 1250000;
1036                         break;
1037                 default:
1038                         /*
1039                          * Read and store the RANGE bit for later use
1040                          * This must be done before regulator is probed,
1041                          * otherwise we error in probe with unsupportable
1042                          * ranges. Read the current smps mode for later use.
1043                          */
1044                         addr = palmas_regs_info[id].vsel_addr;
1045
1046                         ret = palmas_smps_read(pmic->palmas, addr, &reg);
1047                         if (ret)
1048                                 return ret;
1049                         if (reg & PALMAS_SMPS12_VOLTAGE_RANGE)
1050                                 pmic->range[id] = 1;
1051
1052                         if (reg_init && reg_init->roof_floor)
1053                                 pmic->desc[id].ops =
1054                                                 &palmas_ops_ext_control_smps;
1055                         else
1056                                 pmic->desc[id].ops = &palmas_ops_smps;
1057                         pmic->desc[id].n_voltages = PALMAS_SMPS_NUM_VOLTAGES;
1058                         pmic->desc[id].vsel_reg =
1059                                         PALMAS_BASE_TO_REG(PALMAS_SMPS_BASE,
1060                                                 palmas_regs_info[id].vsel_addr);
1061                         pmic->desc[id].vsel_mask =
1062                                         PALMAS_SMPS12_VOLTAGE_VSEL_MASK;
1063
1064                         /* Read the smps mode for later use. */
1065                         addr = palmas_regs_info[id].ctrl_addr;
1066                         ret = palmas_smps_read(pmic->palmas, addr, &reg);
1067                         if (ret)
1068                                 return ret;
1069                         pmic->current_reg_mode[id] = reg &
1070                                         PALMAS_SMPS12_CTRL_MODE_ACTIVE_MASK;
1071                 }
1072
1073                 pmic->desc[id].type = REGULATOR_VOLTAGE;
1074                 pmic->desc[id].owner = THIS_MODULE;
1075
1076                 if (pdata)
1077                         config.init_data = pdata->reg_data[id];
1078                 else
1079                         config.init_data = NULL;
1080
1081                 pmic->desc[id].supply_name = palmas_regs_info[id].sname;
1082                 config.of_node = palmas_matches[id].of_node;
1083
1084                 rdev = devm_regulator_register(&pdev->dev, &pmic->desc[id],
1085                                                &config);
1086                 if (IS_ERR(rdev)) {
1087                         dev_err(&pdev->dev,
1088                                 "failed to register %s regulator\n",
1089                                 pdev->name);
1090                         return PTR_ERR(rdev);
1091                 }
1092
1093                 /* Save regulator for cleanup */
1094                 pmic->rdev[id] = rdev;
1095         }
1096
1097         /* Start this loop from the id left from previous loop */
1098         for (; id < PALMAS_NUM_REGS; id++) {
1099                 if (pdata && pdata->reg_init[id])
1100                         reg_init = pdata->reg_init[id];
1101                 else
1102                         reg_init = NULL;
1103
1104                 /* Miss out regulators which are not available due
1105                  * to alternate functions.
1106                  */
1107
1108                 /* Register the regulators */
1109                 pmic->desc[id].name = palmas_regs_info[id].name;
1110                 pmic->desc[id].id = id;
1111                 pmic->desc[id].type = REGULATOR_VOLTAGE;
1112                 pmic->desc[id].owner = THIS_MODULE;
1113
1114                 if (id < PALMAS_REG_REGEN1) {
1115                         pmic->desc[id].n_voltages = PALMAS_LDO_NUM_VOLTAGES;
1116                         if (reg_init && reg_init->roof_floor)
1117                                 pmic->desc[id].ops =
1118                                         &palmas_ops_ext_control_ldo;
1119                         else
1120                                 pmic->desc[id].ops = &palmas_ops_ldo;
1121                         pmic->desc[id].min_uV = 900000;
1122                         pmic->desc[id].uV_step = 50000;
1123                         pmic->desc[id].linear_min_sel = 1;
1124                         pmic->desc[id].enable_time = 500;
1125                         pmic->desc[id].vsel_reg =
1126                                         PALMAS_BASE_TO_REG(PALMAS_LDO_BASE,
1127                                                 palmas_regs_info[id].vsel_addr);
1128                         pmic->desc[id].vsel_mask =
1129                                         PALMAS_LDO1_VOLTAGE_VSEL_MASK;
1130                         pmic->desc[id].enable_reg =
1131                                         PALMAS_BASE_TO_REG(PALMAS_LDO_BASE,
1132                                                 palmas_regs_info[id].ctrl_addr);
1133                         pmic->desc[id].enable_mask =
1134                                         PALMAS_LDO1_CTRL_MODE_ACTIVE;
1135
1136                         /* Check if LDO8 is in tracking mode or not */
1137                         if (pdata && (id == PALMAS_REG_LDO8) &&
1138                                         pdata->enable_ldo8_tracking) {
1139                                 palmas_enable_ldo8_track(palmas);
1140                                 pmic->desc[id].min_uV = 450000;
1141                                 pmic->desc[id].uV_step = 25000;
1142                         }
1143
1144                         /* LOD6 in vibrator mode will have enable time 2000us */
1145                         if (pdata && pdata->ldo6_vibrator &&
1146                                 (id == PALMAS_REG_LDO6))
1147                                 pmic->desc[id].enable_time = 2000;
1148                 } else {
1149                         pmic->desc[id].n_voltages = 1;
1150                         if (reg_init && reg_init->roof_floor)
1151                                 pmic->desc[id].ops =
1152                                         &palmas_ops_ext_control_extreg;
1153                         else
1154                                 pmic->desc[id].ops = &palmas_ops_extreg;
1155                         pmic->desc[id].enable_reg =
1156                                         PALMAS_BASE_TO_REG(PALMAS_RESOURCE_BASE,
1157                                                 palmas_regs_info[id].ctrl_addr);
1158                         pmic->desc[id].enable_mask =
1159                                         PALMAS_REGEN1_CTRL_MODE_ACTIVE;
1160                 }
1161
1162                 if (pdata)
1163                         config.init_data = pdata->reg_data[id];
1164                 else
1165                         config.init_data = NULL;
1166
1167                 pmic->desc[id].supply_name = palmas_regs_info[id].sname;
1168                 config.of_node = palmas_matches[id].of_node;
1169
1170                 rdev = devm_regulator_register(&pdev->dev, &pmic->desc[id],
1171                                                &config);
1172                 if (IS_ERR(rdev)) {
1173                         dev_err(&pdev->dev,
1174                                 "failed to register %s regulator\n",
1175                                 pdev->name);
1176                         return PTR_ERR(rdev);
1177                 }
1178
1179                 /* Save regulator for cleanup */
1180                 pmic->rdev[id] = rdev;
1181
1182                 /* Initialise sleep/init values from platform data */
1183                 if (pdata) {
1184                         reg_init = pdata->reg_init[id];
1185                         if (reg_init) {
1186                                 if (id < PALMAS_REG_REGEN1)
1187                                         ret = palmas_ldo_init(palmas,
1188                                                         id, reg_init);
1189                                 else
1190                                         ret = palmas_extreg_init(palmas,
1191                                                         id, reg_init);
1192                                 if (ret)
1193                                         return ret;
1194                         }
1195                 }
1196         }
1197
1198
1199         return 0;
1200 }
1201
1202 static struct of_device_id of_palmas_match_tbl[] = {
1203         { .compatible = "ti,palmas-pmic", },
1204         { .compatible = "ti,twl6035-pmic", },
1205         { .compatible = "ti,twl6036-pmic", },
1206         { .compatible = "ti,twl6037-pmic", },
1207         { .compatible = "ti,tps65913-pmic", },
1208         { .compatible = "ti,tps65914-pmic", },
1209         { .compatible = "ti,tps80036-pmic", },
1210         { .compatible = "ti,tps659038-pmic", },
1211         { /* end */ }
1212 };
1213
1214 static struct platform_driver palmas_driver = {
1215         .driver = {
1216                 .name = "palmas-pmic",
1217                 .of_match_table = of_palmas_match_tbl,
1218                 .owner = THIS_MODULE,
1219         },
1220         .probe = palmas_regulators_probe,
1221 };
1222
1223 static int __init palmas_init(void)
1224 {
1225         return platform_driver_register(&palmas_driver);
1226 }
1227 subsys_initcall(palmas_init);
1228
1229 static void __exit palmas_exit(void)
1230 {
1231         platform_driver_unregister(&palmas_driver);
1232 }
1233 module_exit(palmas_exit);
1234
1235 MODULE_AUTHOR("Graeme Gregory <[email protected]>");
1236 MODULE_DESCRIPTION("Palmas voltage regulator driver");
1237 MODULE_LICENSE("GPL");
1238 MODULE_ALIAS("platform:palmas-pmic");
1239 MODULE_DEVICE_TABLE(of, of_palmas_match_tbl);