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 <gg@slimlogic.co.uk>
   7  * Author: Ian Lartey <ian@slimlogic.co.uk>
   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 regulator_linear_range smps_low_ranges[] = {
  40         REGULATOR_LINEAR_RANGE(0, 0x0, 0x0, 0),
  41         REGULATOR_LINEAR_RANGE(500000, 0x1, 0x6, 0),
  42         REGULATOR_LINEAR_RANGE(510000, 0x7, 0x79, 10000),
  43         REGULATOR_LINEAR_RANGE(1650000, 0x7A, 0x7f, 0),
  44 };
  45
  46 static const struct regulator_linear_range smps_high_ranges[] = {
  47         REGULATOR_LINEAR_RANGE(0, 0x0, 0x0, 0),
  48         REGULATOR_LINEAR_RANGE(1000000, 0x1, 0x6, 0),
  49         REGULATOR_LINEAR_RANGE(1020000, 0x7, 0x79, 20000),
  50         REGULATOR_LINEAR_RANGE(3300000, 0x7A, 0x7f, 0),
  51 };
  52
  53 static const struct regs_info palmas_regs_info[] = {
  54         {
  55                 .name           = "SMPS12",
  56                 .sname          = "smps1-in",
  57                 .vsel_addr      = PALMAS_SMPS12_VOLTAGE,
  58                 .ctrl_addr      = PALMAS_SMPS12_CTRL,
  59                 .tstep_addr     = PALMAS_SMPS12_TSTEP,
  60                 .sleep_id       = PALMAS_EXTERNAL_REQSTR_ID_SMPS12,
  61         },
  62         {
  63                 .name           = "SMPS123",
  64                 .sname          = "smps1-in",
  65                 .vsel_addr      = PALMAS_SMPS12_VOLTAGE,
  66                 .ctrl_addr      = PALMAS_SMPS12_CTRL,
  67                 .tstep_addr     = PALMAS_SMPS12_TSTEP,
  68                 .sleep_id       = PALMAS_EXTERNAL_REQSTR_ID_SMPS12,
  69         },
  70         {
  71                 .name           = "SMPS3",
  72                 .sname          = "smps3-in",
  73                 .vsel_addr      = PALMAS_SMPS3_VOLTAGE,
  74                 .ctrl_addr      = PALMAS_SMPS3_CTRL,
  75                 .sleep_id       = PALMAS_EXTERNAL_REQSTR_ID_SMPS3,
  76         },
  77         {
  78                 .name           = "SMPS45",
  79                 .sname          = "smps4-in",
  80                 .vsel_addr      = PALMAS_SMPS45_VOLTAGE,
  81                 .ctrl_addr      = PALMAS_SMPS45_CTRL,
  82                 .tstep_addr     = PALMAS_SMPS45_TSTEP,
  83                 .sleep_id       = PALMAS_EXTERNAL_REQSTR_ID_SMPS45,
  84         },
  85         {
  86                 .name           = "SMPS457",
  87                 .sname          = "smps4-in",
  88                 .vsel_addr      = PALMAS_SMPS45_VOLTAGE,
  89                 .ctrl_addr      = PALMAS_SMPS45_CTRL,
  90                 .tstep_addr     = PALMAS_SMPS45_TSTEP,
  91                 .sleep_id       = PALMAS_EXTERNAL_REQSTR_ID_SMPS45,
  92         },
  93         {
  94                 .name           = "SMPS6",
  95                 .sname          = "smps6-in",
  96                 .vsel_addr      = PALMAS_SMPS6_VOLTAGE,
  97                 .ctrl_addr      = PALMAS_SMPS6_CTRL,
  98                 .tstep_addr     = PALMAS_SMPS6_TSTEP,
  99                 .sleep_id       = PALMAS_EXTERNAL_REQSTR_ID_SMPS6,
 100         },
 101         {
 102                 .name           = "SMPS7",
 103                 .sname          = "smps7-in",
 104                 .vsel_addr      = PALMAS_SMPS7_VOLTAGE,
 105                 .ctrl_addr      = PALMAS_SMPS7_CTRL,
 106                 .sleep_id       = PALMAS_EXTERNAL_REQSTR_ID_SMPS7,
 107         },
 108         {
 109                 .name           = "SMPS8",
 110                 .sname          = "smps8-in",
 111                 .vsel_addr      = PALMAS_SMPS8_VOLTAGE,
 112                 .ctrl_addr      = PALMAS_SMPS8_CTRL,
 113                 .tstep_addr     = PALMAS_SMPS8_TSTEP,
 114                 .sleep_id       = PALMAS_EXTERNAL_REQSTR_ID_SMPS8,
 115         },
 116         {
 117                 .name           = "SMPS9",
 118                 .sname          = "smps9-in",
 119                 .vsel_addr      = PALMAS_SMPS9_VOLTAGE,
 120                 .ctrl_addr      = PALMAS_SMPS9_CTRL,
 121                 .sleep_id       = PALMAS_EXTERNAL_REQSTR_ID_SMPS9,
 122         },
 123         {
 124                 .name           = "SMPS10_OUT2",
 125                 .sname          = "smps10-in",
 126                 .ctrl_addr      = PALMAS_SMPS10_CTRL,
 127                 .sleep_id       = PALMAS_EXTERNAL_REQSTR_ID_SMPS10,
 128         },
 129         {
 130                 .name           = "SMPS10_OUT1",
 131                 .sname          = "smps10-out2",
 132                 .ctrl_addr      = PALMAS_SMPS10_CTRL,
 133                 .sleep_id       = PALMAS_EXTERNAL_REQSTR_ID_SMPS10,
 134         },
 135         {
 136                 .name           = "LDO1",
 137                 .sname          = "ldo1-in",
 138                 .vsel_addr      = PALMAS_LDO1_VOLTAGE,
 139                 .ctrl_addr      = PALMAS_LDO1_CTRL,
 140                 .sleep_id       = PALMAS_EXTERNAL_REQSTR_ID_LDO1,
 141         },
 142         {
 143                 .name           = "LDO2",
 144                 .sname          = "ldo2-in",
 145                 .vsel_addr      = PALMAS_LDO2_VOLTAGE,
 146                 .ctrl_addr      = PALMAS_LDO2_CTRL,
 147                 .sleep_id       = PALMAS_EXTERNAL_REQSTR_ID_LDO2,
 148         },
 149         {
 150                 .name           = "LDO3",
 151                 .sname          = "ldo3-in",
 152                 .vsel_addr      = PALMAS_LDO3_VOLTAGE,
 153                 .ctrl_addr      = PALMAS_LDO3_CTRL,
 154                 .sleep_id       = PALMAS_EXTERNAL_REQSTR_ID_LDO3,
 155         },
 156         {
 157                 .name           = "LDO4",
 158                 .sname          = "ldo4-in",
 159                 .vsel_addr      = PALMAS_LDO4_VOLTAGE,
 160                 .ctrl_addr      = PALMAS_LDO4_CTRL,
 161                 .sleep_id       = PALMAS_EXTERNAL_REQSTR_ID_LDO4,
 162         },
 163         {
 164                 .name           = "LDO5",
 165                 .sname          = "ldo5-in",
 166                 .vsel_addr      = PALMAS_LDO5_VOLTAGE,
 167                 .ctrl_addr      = PALMAS_LDO5_CTRL,
 168                 .sleep_id       = PALMAS_EXTERNAL_REQSTR_ID_LDO5,
 169         },
 170         {
 171                 .name           = "LDO6",
 172                 .sname          = "ldo6-in",
 173                 .vsel_addr      = PALMAS_LDO6_VOLTAGE,
 174                 .ctrl_addr      = PALMAS_LDO6_CTRL,
 175                 .sleep_id       = PALMAS_EXTERNAL_REQSTR_ID_LDO6,
 176         },
 177         {
 178                 .name           = "LDO7",
 179                 .sname          = "ldo7-in",
 180                 .vsel_addr      = PALMAS_LDO7_VOLTAGE,
 181                 .ctrl_addr      = PALMAS_LDO7_CTRL,
 182                 .sleep_id       = PALMAS_EXTERNAL_REQSTR_ID_LDO7,
 183         },
 184         {
 185                 .name           = "LDO8",
 186                 .sname          = "ldo8-in",
 187                 .vsel_addr      = PALMAS_LDO8_VOLTAGE,
 188                 .ctrl_addr      = PALMAS_LDO8_CTRL,
 189                 .sleep_id       = PALMAS_EXTERNAL_REQSTR_ID_LDO8,
 190         },
 191         {
 192                 .name           = "LDO9",
 193                 .sname          = "ldo9-in",
 194                 .vsel_addr      = PALMAS_LDO9_VOLTAGE,
 195                 .ctrl_addr      = PALMAS_LDO9_CTRL,
 196                 .sleep_id       = PALMAS_EXTERNAL_REQSTR_ID_LDO9,
 197         },
 198         {
 199                 .name           = "LDOLN",
 200                 .sname          = "ldoln-in",
 201                 .vsel_addr      = PALMAS_LDOLN_VOLTAGE,
 202                 .ctrl_addr      = PALMAS_LDOLN_CTRL,
 203                 .sleep_id       = PALMAS_EXTERNAL_REQSTR_ID_LDOLN,
 204         },
 205         {
 206                 .name           = "LDOUSB",
 207                 .sname          = "ldousb-in",
 208                 .vsel_addr      = PALMAS_LDOUSB_VOLTAGE,
 209                 .ctrl_addr      = PALMAS_LDOUSB_CTRL,
 210                 .sleep_id       = PALMAS_EXTERNAL_REQSTR_ID_LDOUSB,
 211         },
 212         {
 213                 .name           = "REGEN1",
 214                 .ctrl_addr      = PALMAS_REGEN1_CTRL,
 215                 .sleep_id       = PALMAS_EXTERNAL_REQSTR_ID_REGEN1,
 216         },
 217         {
 218                 .name           = "REGEN2",
 219                 .ctrl_addr      = PALMAS_REGEN2_CTRL,
 220                 .sleep_id       = PALMAS_EXTERNAL_REQSTR_ID_REGEN2,
 221         },
 222         {
 223                 .name           = "REGEN3",
 224                 .ctrl_addr      = PALMAS_REGEN3_CTRL,
 225                 .sleep_id       = PALMAS_EXTERNAL_REQSTR_ID_REGEN3,
 226         },
 227         {
 228                 .name           = "SYSEN1",
 229                 .ctrl_addr      = PALMAS_SYSEN1_CTRL,
 230                 .sleep_id       = PALMAS_EXTERNAL_REQSTR_ID_SYSEN1,
 231         },
 232         {
 233                 .name           = "SYSEN2",
 234                 .ctrl_addr      = PALMAS_SYSEN2_CTRL,
 235                 .sleep_id       = PALMAS_EXTERNAL_REQSTR_ID_SYSEN2,
 236         },
 237 };
 238
 239 static unsigned int palmas_smps_ramp_delay[4] = {0, 10000, 5000, 2500};
 240
 241 #define SMPS_CTRL_MODE_OFF              0x00
 242 #define SMPS_CTRL_MODE_ON               0x01
 243 #define SMPS_CTRL_MODE_ECO              0x02
 244 #define SMPS_CTRL_MODE_PWM              0x03
 245
 246 #define PALMAS_SMPS_NUM_VOLTAGES        122
 247 #define PALMAS_SMPS10_NUM_VOLTAGES      2
 248 #define PALMAS_LDO_NUM_VOLTAGES         50
 249
 250 #define SMPS10_VSEL                     (1<<3)
 251 #define SMPS10_BOOST_EN                 (1<<2)
 252 #define SMPS10_BYPASS_EN                (1<<1)
 253 #define SMPS10_SWITCH_EN                (1<<0)
 254
 255 #define REGULATOR_SLAVE                 0
 256
 257 static int palmas_smps_read(struct palmas *palmas, unsigned int reg,
 258                 unsigned int *dest)
 259 {
 260         unsigned int addr;
 261
 262         addr = PALMAS_BASE_TO_REG(PALMAS_SMPS_BASE, reg);
 263
 264         return regmap_read(palmas->regmap[REGULATOR_SLAVE], addr, dest);
 265 }
 266
 267 static int palmas_smps_write(struct palmas *palmas, unsigned int reg,
 268                 unsigned int value)
 269 {
 270         unsigned int addr;
 271
 272         addr = PALMAS_BASE_TO_REG(PALMAS_SMPS_BASE, reg);
 273
 274         return regmap_write(palmas->regmap[REGULATOR_SLAVE], addr, value);
 275 }
 276
 277 static int palmas_ldo_read(struct palmas *palmas, unsigned int reg,
 278                 unsigned int *dest)
 279 {
 280         unsigned int addr;
 281
 282         addr = PALMAS_BASE_TO_REG(PALMAS_LDO_BASE, reg);
 283
 284         return regmap_read(palmas->regmap[REGULATOR_SLAVE], addr, dest);
 285 }
 286
 287 static int palmas_ldo_write(struct palmas *palmas, unsigned int reg,
 288                 unsigned int value)
 289 {
 290         unsigned int addr;
 291
 292         addr = PALMAS_BASE_TO_REG(PALMAS_LDO_BASE, reg);
 293
 294         return regmap_write(palmas->regmap[REGULATOR_SLAVE], addr, value);
 295 }
 296
 297 static int palmas_set_mode_smps(struct regulator_dev *dev, unsigned int mode)
 298 {
 299         struct palmas_pmic *pmic = rdev_get_drvdata(dev);
 300         int id = rdev_get_id(dev);
 301         unsigned int reg;
 302         bool rail_enable = true;
 303
 304         palmas_smps_read(pmic->palmas, palmas_regs_info[id].ctrl_addr, &reg);
 305         reg &= ~PALMAS_SMPS12_CTRL_MODE_ACTIVE_MASK;
 306
 307         if (reg == SMPS_CTRL_MODE_OFF)
 308                 rail_enable = false;
 309
 310         switch (mode) {
 311         case REGULATOR_MODE_NORMAL:
 312                 reg |= SMPS_CTRL_MODE_ON;
 313                 break;
 314         case REGULATOR_MODE_IDLE:
 315                 reg |= SMPS_CTRL_MODE_ECO;
 316                 break;
 317         case REGULATOR_MODE_FAST:
 318                 reg |= SMPS_CTRL_MODE_PWM;
 319                 break;
 320         default:
 321                 return -EINVAL;
 322         }
 323
 324         pmic->current_reg_mode[id] = reg & PALMAS_SMPS12_CTRL_MODE_ACTIVE_MASK;
 325         if (rail_enable)
 326                 palmas_smps_write(pmic->palmas,
 327                         palmas_regs_info[id].ctrl_addr, reg);
 328         return 0;
 329 }
 330
 331 static unsigned int palmas_get_mode_smps(struct regulator_dev *dev)
 332 {
 333         struct palmas_pmic *pmic = rdev_get_drvdata(dev);
 334         int id = rdev_get_id(dev);
 335         unsigned int reg;
 336
 337         reg = pmic->current_reg_mode[id] & PALMAS_SMPS12_CTRL_MODE_ACTIVE_MASK;
 338
 339         switch (reg) {
 340         case SMPS_CTRL_MODE_ON:
 341                 return REGULATOR_MODE_NORMAL;
 342         case SMPS_CTRL_MODE_ECO:
 343                 return REGULATOR_MODE_IDLE;
 344         case SMPS_CTRL_MODE_PWM:
 345                 return REGULATOR_MODE_FAST;
 346         }
 347
 348         return 0;
 349 }
 350
 351 static int palmas_smps_set_ramp_delay(struct regulator_dev *rdev,
 352                  int ramp_delay)
 353 {
 354         struct palmas_pmic *pmic = rdev_get_drvdata(rdev);
 355         int id = rdev_get_id(rdev);
 356         unsigned int reg = 0;
 357         unsigned int addr = palmas_regs_info[id].tstep_addr;
 358         int ret;
 359
 360         /* SMPS3 and SMPS7 do not have tstep_addr setting */
 361         switch (id) {
 362         case PALMAS_REG_SMPS3:
 363         case PALMAS_REG_SMPS7:
 364                 return 0;
 365         }
 366
 367         if (ramp_delay <= 0)
 368                 reg = 0;
 369         else if (ramp_delay <= 2500)
 370                 reg = 3;
 371         else if (ramp_delay <= 5000)
 372                 reg = 2;
 373         else
 374                 reg = 1;
 375
 376         ret = palmas_smps_write(pmic->palmas, addr, reg);
 377         if (ret < 0) {
 378                 dev_err(pmic->palmas->dev, "TSTEP write failed: %d\n", ret);
 379                 return ret;
 380         }
 381
 382         pmic->ramp_delay[id] = palmas_smps_ramp_delay[reg];
 383         return ret;
 384 }
 385
 386 static struct regulator_ops palmas_ops_smps = {
 387         .is_enabled             = regulator_is_enabled_regmap,
 388         .enable                 = regulator_enable_regmap,
 389         .disable                = regulator_disable_regmap,
 390         .set_mode               = palmas_set_mode_smps,
 391         .get_mode               = palmas_get_mode_smps,
 392         .get_voltage_sel        = regulator_get_voltage_sel_regmap,
 393         .set_voltage_sel        = regulator_set_voltage_sel_regmap,
 394         .list_voltage           = regulator_list_voltage_linear_range,
 395         .map_voltage            = regulator_map_voltage_linear_range,
 396         .set_voltage_time_sel   = regulator_set_voltage_time_sel,
 397         .set_ramp_delay         = palmas_smps_set_ramp_delay,
 398 };
 399
 400 static struct regulator_ops palmas_ops_ext_control_smps = {
 401         .set_mode               = palmas_set_mode_smps,
 402         .get_mode               = palmas_get_mode_smps,
 403         .get_voltage_sel        = regulator_get_voltage_sel_regmap,
 404         .set_voltage_sel        = regulator_set_voltage_sel_regmap,
 405         .list_voltage           = regulator_list_voltage_linear_range,
 406         .map_voltage            = regulator_map_voltage_linear_range,
 407         .set_voltage_time_sel   = regulator_set_voltage_time_sel,
 408         .set_ramp_delay         = palmas_smps_set_ramp_delay,
 409 };
 410
 411 static struct regulator_ops palmas_ops_smps10 = {
 412         .is_enabled             = regulator_is_enabled_regmap,
 413         .enable                 = regulator_enable_regmap,
 414         .disable                = regulator_disable_regmap,
 415         .get_voltage_sel        = regulator_get_voltage_sel_regmap,
 416         .set_voltage_sel        = regulator_set_voltage_sel_regmap,
 417         .list_voltage           = regulator_list_voltage_linear,
 418         .map_voltage            = regulator_map_voltage_linear,
 419         .set_bypass             = regulator_set_bypass_regmap,
 420         .get_bypass             = regulator_get_bypass_regmap,
 421 };
 422
 423 static int palmas_is_enabled_ldo(struct regulator_dev *dev)
 424 {
 425         struct palmas_pmic *pmic = rdev_get_drvdata(dev);
 426         int id = rdev_get_id(dev);
 427         unsigned int reg;
 428
 429         palmas_ldo_read(pmic->palmas, palmas_regs_info[id].ctrl_addr, &reg);
 430
 431         reg &= PALMAS_LDO1_CTRL_STATUS;
 432
 433         return !!(reg);
 434 }
 435
 436 static struct regulator_ops palmas_ops_ldo = {
 437         .is_enabled             = palmas_is_enabled_ldo,
 438         .enable                 = regulator_enable_regmap,
 439         .disable                = regulator_disable_regmap,
 440         .get_voltage_sel        = regulator_get_voltage_sel_regmap,
 441         .set_voltage_sel        = regulator_set_voltage_sel_regmap,
 442         .list_voltage           = regulator_list_voltage_linear,
 443         .map_voltage            = regulator_map_voltage_linear,
 444 };
 445
 446 static struct regulator_ops palmas_ops_ext_control_ldo = {
 447         .get_voltage_sel        = regulator_get_voltage_sel_regmap,
 448         .set_voltage_sel        = regulator_set_voltage_sel_regmap,
 449         .list_voltage           = regulator_list_voltage_linear,
 450         .map_voltage            = regulator_map_voltage_linear,
 451 };
 452
 453 static struct regulator_ops palmas_ops_extreg = {
 454         .is_enabled             = regulator_is_enabled_regmap,
 455         .enable                 = regulator_enable_regmap,
 456         .disable                = regulator_disable_regmap,
 457 };
 458
 459 static struct regulator_ops palmas_ops_ext_control_extreg = {
 460 };
 461
 462 static int palmas_regulator_config_external(struct palmas *palmas, int id,
 463                 struct palmas_reg_init *reg_init)
 464 {
 465         int sleep_id = palmas_regs_info[id].sleep_id;
 466         int ret;
 467
 468         ret = palmas_ext_control_req_config(palmas, sleep_id,
 469                                         reg_init->roof_floor, true);
 470         if (ret < 0)
 471                 dev_err(palmas->dev,
 472                         "Ext control config for regulator %d failed %d\n",
 473                         id, ret);
 474         return ret;
 475 }
 476
 477 /*
 478  * setup the hardware based sleep configuration of the SMPS/LDO regulators
 479  * from the platform data. This is different to the software based control
 480  * supported by the regulator framework as it is controlled by toggling
 481  * pins on the PMIC such as PREQ, SYSEN, ...
 482  */
 483 static int palmas_smps_init(struct palmas *palmas, int id,
 484                 struct palmas_reg_init *reg_init)
 485 {
 486         unsigned int reg;
 487         unsigned int addr;
 488         int ret;
 489
 490         addr = palmas_regs_info[id].ctrl_addr;
 491
 492         ret = palmas_smps_read(palmas, addr, &reg);
 493         if (ret)
 494                 return ret;
 495
 496         switch (id) {
 497         case PALMAS_REG_SMPS10_OUT1:
 498         case PALMAS_REG_SMPS10_OUT2:
 499                 reg &= ~PALMAS_SMPS10_CTRL_MODE_SLEEP_MASK;
 500                 if (reg_init->mode_sleep)
 501                         reg |= reg_init->mode_sleep <<
 502                                         PALMAS_SMPS10_CTRL_MODE_SLEEP_SHIFT;
 503                 break;
 504         default:
 505                 if (reg_init->warm_reset)
 506                         reg |= PALMAS_SMPS12_CTRL_WR_S;
 507                 else
 508                         reg &= ~PALMAS_SMPS12_CTRL_WR_S;
 509
 510                 if (reg_init->roof_floor)
 511                         reg |= PALMAS_SMPS12_CTRL_ROOF_FLOOR_EN;
 512                 else
 513                         reg &= ~PALMAS_SMPS12_CTRL_ROOF_FLOOR_EN;
 514
 515                 reg &= ~PALMAS_SMPS12_CTRL_MODE_SLEEP_MASK;
 516                 if (reg_init->mode_sleep)
 517                         reg |= reg_init->mode_sleep <<
 518                                         PALMAS_SMPS12_CTRL_MODE_SLEEP_SHIFT;
 519         }
 520
 521         ret = palmas_smps_write(palmas, addr, reg);
 522         if (ret)
 523                 return ret;
 524
 525         if (palmas_regs_info[id].vsel_addr && reg_init->vsel) {
 526                 addr = palmas_regs_info[id].vsel_addr;
 527
 528                 reg = reg_init->vsel;
 529
 530                 ret = palmas_smps_write(palmas, addr, reg);
 531                 if (ret)
 532                         return ret;
 533         }
 534
 535         if (reg_init->roof_floor && (id != PALMAS_REG_SMPS10_OUT1) &&
 536                         (id != PALMAS_REG_SMPS10_OUT2)) {
 537                 /* Enable externally controlled regulator */
 538                 addr = palmas_regs_info[id].ctrl_addr;
 539                 ret = palmas_smps_read(palmas, addr, &reg);
 540                 if (ret < 0)
 541                         return ret;
 542
 543                 if (!(reg & PALMAS_SMPS12_CTRL_MODE_ACTIVE_MASK)) {
 544                         reg |= SMPS_CTRL_MODE_ON;
 545                         ret = palmas_smps_write(palmas, addr, reg);
 546                         if (ret < 0)
 547                                 return ret;
 548                 }
 549                 return palmas_regulator_config_external(palmas, id, reg_init);
 550         }
 551         return 0;
 552 }
 553
 554 static int palmas_ldo_init(struct palmas *palmas, int id,
 555                 struct palmas_reg_init *reg_init)
 556 {
 557         unsigned int reg;
 558         unsigned int addr;
 559         int ret;
 560
 561         addr = palmas_regs_info[id].ctrl_addr;
 562
 563         ret = palmas_ldo_read(palmas, addr, &reg);
 564         if (ret)
 565                 return ret;
 566
 567         if (reg_init->warm_reset)
 568                 reg |= PALMAS_LDO1_CTRL_WR_S;
 569         else
 570                 reg &= ~PALMAS_LDO1_CTRL_WR_S;
 571
 572         if (reg_init->mode_sleep)
 573                 reg |= PALMAS_LDO1_CTRL_MODE_SLEEP;
 574         else
 575                 reg &= ~PALMAS_LDO1_CTRL_MODE_SLEEP;
 576
 577         ret = palmas_ldo_write(palmas, addr, reg);
 578         if (ret)
 579                 return ret;
 580
 581         if (reg_init->roof_floor) {
 582                 /* Enable externally controlled regulator */
 583                 addr = palmas_regs_info[id].ctrl_addr;
 584                 ret = palmas_update_bits(palmas, PALMAS_LDO_BASE,
 585                                 addr, PALMAS_LDO1_CTRL_MODE_ACTIVE,
 586                                 PALMAS_LDO1_CTRL_MODE_ACTIVE);
 587                 if (ret < 0) {
 588                         dev_err(palmas->dev,
 589                                 "LDO Register 0x%02x update failed %d\n",
 590                                 addr, ret);
 591                         return ret;
 592                 }
 593                 return palmas_regulator_config_external(palmas, id, reg_init);
 594         }
 595         return 0;
 596 }
 597
 598 static int palmas_extreg_init(struct palmas *palmas, int id,
 599                 struct palmas_reg_init *reg_init)
 600 {
 601         unsigned int addr;
 602         int ret;
 603         unsigned int val = 0;
 604
 605         addr = palmas_regs_info[id].ctrl_addr;
 606
 607         if (reg_init->mode_sleep)
 608                 val = PALMAS_REGEN1_CTRL_MODE_SLEEP;
 609
 610         ret = palmas_update_bits(palmas, PALMAS_RESOURCE_BASE,
 611                         addr, PALMAS_REGEN1_CTRL_MODE_SLEEP, val);
 612         if (ret < 0) {
 613                 dev_err(palmas->dev, "Resource reg 0x%02x update failed %d\n",
 614                         addr, ret);
 615                 return ret;
 616         }
 617
 618         if (reg_init->roof_floor) {
 619                 /* Enable externally controlled regulator */
 620                 addr = palmas_regs_info[id].ctrl_addr;
 621                 ret = palmas_update_bits(palmas, PALMAS_RESOURCE_BASE,
 622                                 addr, PALMAS_REGEN1_CTRL_MODE_ACTIVE,
 623                                 PALMAS_REGEN1_CTRL_MODE_ACTIVE);
 624                 if (ret < 0) {
 625                         dev_err(palmas->dev,
 626                                 "Resource Register 0x%02x update failed %d\n",
 627                                 addr, ret);
 628                         return ret;
 629                 }
 630                 return palmas_regulator_config_external(palmas, id, reg_init);
 631         }
 632         return 0;
 633 }
 634
 635 static void palmas_enable_ldo8_track(struct palmas *palmas)
 636 {
 637         unsigned int reg;
 638         unsigned int addr;
 639         int ret;
 640
 641         addr = palmas_regs_info[PALMAS_REG_LDO8].ctrl_addr;
 642
 643         ret = palmas_ldo_read(palmas, addr, &reg);
 644         if (ret) {
 645                 dev_err(palmas->dev, "Error in reading ldo8 control reg\n");
 646                 return;
 647         }
 648
 649         reg |= PALMAS_LDO8_CTRL_LDO_TRACKING_EN;
 650         ret = palmas_ldo_write(palmas, addr, reg);
 651         if (ret < 0) {
 652                 dev_err(palmas->dev, "Error in enabling tracking mode\n");
 653                 return;
 654         }
 655         /*
 656          * When SMPS45 is set to off and LDO8 tracking is enabled, the LDO8
 657          * output is defined by the LDO8_VOLTAGE.VSEL register divided by two,
 658          * and can be set from 0.45 to 1.65 V.
 659          */
 660         addr = palmas_regs_info[PALMAS_REG_LDO8].vsel_addr;
 661         ret = palmas_ldo_read(palmas, addr, &reg);
 662         if (ret) {
 663                 dev_err(palmas->dev, "Error in reading ldo8 voltage reg\n");
 664                 return;
 665         }
 666
 667         reg = (reg << 1) & PALMAS_LDO8_VOLTAGE_VSEL_MASK;
 668         ret = palmas_ldo_write(palmas, addr, reg);
 669         if (ret < 0)
 670                 dev_err(palmas->dev, "Error in setting ldo8 voltage reg\n");
 671
 672         return;
 673 }
 674
 675 static struct of_regulator_match palmas_matches[] = {
 676         { .name = "smps12", },
 677         { .name = "smps123", },
 678         { .name = "smps3", },
 679         { .name = "smps45", },
 680         { .name = "smps457", },
 681         { .name = "smps6", },
 682         { .name = "smps7", },
 683         { .name = "smps8", },
 684         { .name = "smps9", },
 685         { .name = "smps10_out2", },
 686         { .name = "smps10_out1", },
 687         { .name = "ldo1", },
 688         { .name = "ldo2", },
 689         { .name = "ldo3", },
 690         { .name = "ldo4", },
 691         { .name = "ldo5", },
 692         { .name = "ldo6", },
 693         { .name = "ldo7", },
 694         { .name = "ldo8", },
 695         { .name = "ldo9", },
 696         { .name = "ldoln", },
 697         { .name = "ldousb", },
 698         { .name = "regen1", },
 699         { .name = "regen2", },
 700         { .name = "regen3", },
 701         { .name = "sysen1", },
 702         { .name = "sysen2", },
 703 };
 704
 705 static void palmas_dt_to_pdata(struct device *dev,
 706                 struct device_node *node,
 707                 struct palmas_pmic_platform_data *pdata)
 708 {
 709         struct device_node *regulators;
 710         u32 prop;
 711         int idx, ret;
 712
 713         node = of_node_get(node);
 714         regulators = of_get_child_by_name(node, "regulators");
 715         if (!regulators) {
 716                 dev_info(dev, "regulator node not found\n");
 717                 return;
 718         }
 719
 720         ret = of_regulator_match(dev, regulators, palmas_matches,
 721                         PALMAS_NUM_REGS);
 722         of_node_put(regulators);
 723         if (ret < 0) {
 724                 dev_err(dev, "Error parsing regulator init data: %d\n", ret);
 725                 return;
 726         }
 727
 728         for (idx = 0; idx < PALMAS_NUM_REGS; idx++) {
 729                 if (!palmas_matches[idx].init_data ||
 730                                 !palmas_matches[idx].of_node)
 731                         continue;
 732
 733                 pdata->reg_data[idx] = palmas_matches[idx].init_data;
 734
 735                 pdata->reg_init[idx] = devm_kzalloc(dev,
 736                                 sizeof(struct palmas_reg_init), GFP_KERNEL);
 737
 738                 pdata->reg_init[idx]->warm_reset =
 739                         of_property_read_bool(palmas_matches[idx].of_node,
 740                                              "ti,warm-reset");
 741
 742                 ret = of_property_read_u32(palmas_matches[idx].of_node,
 743                                               "ti,roof-floor", &prop);
 744                 /* EINVAL: Property not found */
 745                 if (ret != -EINVAL) {
 746                         int econtrol;
 747
 748                         /* use default value, when no value is specified */
 749                         econtrol = PALMAS_EXT_CONTROL_NSLEEP;
 750                         if (!ret) {
 751                                 switch (prop) {
 752                                 case 1:
 753                                         econtrol = PALMAS_EXT_CONTROL_ENABLE1;
 754                                         break;
 755                                 case 2:
 756                                         econtrol = PALMAS_EXT_CONTROL_ENABLE2;
 757                                         break;
 758                                 case 3:
 759                                         econtrol = PALMAS_EXT_CONTROL_NSLEEP;
 760                                         break;
 761                                 default:
 762                                         WARN_ON(1);
 763                                         dev_warn(dev,
 764                                         "%s: Invalid roof-floor option: %u\n",
 765                                              palmas_matches[idx].name, prop);
 766                                         break;
 767                                 }
 768                         }
 769                         pdata->reg_init[idx]->roof_floor = econtrol;
 770                 }
 771
 772                 ret = of_property_read_u32(palmas_matches[idx].of_node,
 773                                 "ti,mode-sleep", &prop);
 774                 if (!ret)
 775                         pdata->reg_init[idx]->mode_sleep = prop;
 776
 777                 ret = of_property_read_bool(palmas_matches[idx].of_node,
 778                                             "ti,smps-range");
 779                 if (ret)
 780                         pdata->reg_init[idx]->vsel =
 781                                 PALMAS_SMPS12_VOLTAGE_RANGE;
 782
 783                 if (idx == PALMAS_REG_LDO8)
 784                         pdata->enable_ldo8_tracking = of_property_read_bool(
 785                                                 palmas_matches[idx].of_node,
 786                                                 "ti,enable-ldo8-tracking");
 787         }
 788
 789         pdata->ldo6_vibrator = of_property_read_bool(node, "ti,ldo6-vibrator");
 790 }
 791
 792
 793 static int palmas_regulators_probe(struct platform_device *pdev)
 794 {
 795         struct palmas *palmas = dev_get_drvdata(pdev->dev.parent);
 796         struct palmas_pmic_platform_data *pdata = dev_get_platdata(&pdev->dev);
 797         struct device_node *node = pdev->dev.of_node;
 798         struct regulator_dev *rdev;
 799         struct regulator_config config = { };
 800         struct palmas_pmic *pmic;
 801         struct palmas_reg_init *reg_init;
 802         int id = 0, ret;
 803         unsigned int addr, reg;
 804
 805         if (node && !pdata) {
 806                 pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL);
 807
 808                 if (!pdata)
 809                         return -ENOMEM;
 810
 811                 palmas_dt_to_pdata(&pdev->dev, node, pdata);
 812         }
 813
 814         pmic = devm_kzalloc(&pdev->dev, sizeof(*pmic), GFP_KERNEL);
 815         if (!pmic)
 816                 return -ENOMEM;
 817
 818         pmic->dev = &pdev->dev;
 819         pmic->palmas = palmas;
 820         palmas->pmic = pmic;
 821         platform_set_drvdata(pdev, pmic);
 822
 823         ret = palmas_smps_read(palmas, PALMAS_SMPS_CTRL, &reg);
 824         if (ret)
 825                 return ret;
 826
 827         if (reg & PALMAS_SMPS_CTRL_SMPS12_SMPS123_EN)
 828                 pmic->smps123 = 1;
 829
 830         if (reg & PALMAS_SMPS_CTRL_SMPS45_SMPS457_EN)
 831                 pmic->smps457 = 1;
 832
 833         config.regmap = palmas->regmap[REGULATOR_SLAVE];
 834         config.dev = &pdev->dev;
 835         config.driver_data = pmic;
 836
 837         for (id = 0; id < PALMAS_REG_LDO1; id++) {
 838                 bool ramp_delay_support = false;
 839
 840                 /*
 841                  * Miss out regulators which are not available due
 842                  * to slaving configurations.
 843                  */
 844                 switch (id) {
 845                 case PALMAS_REG_SMPS12:
 846                 case PALMAS_REG_SMPS3:
 847                         if (pmic->smps123)
 848                                 continue;
 849                         if (id == PALMAS_REG_SMPS12)
 850                                 ramp_delay_support = true;
 851                         break;
 852                 case PALMAS_REG_SMPS123:
 853                         if (!pmic->smps123)
 854                                 continue;
 855                         ramp_delay_support = true;
 856                         break;
 857                 case PALMAS_REG_SMPS45:
 858                 case PALMAS_REG_SMPS7:
 859                         if (pmic->smps457)
 860                                 continue;
 861                         if (id == PALMAS_REG_SMPS45)
 862                                 ramp_delay_support = true;
 863                         break;
 864                 case PALMAS_REG_SMPS457:
 865                         if (!pmic->smps457)
 866                                 continue;
 867                         ramp_delay_support = true;
 868                         break;
 869                 case PALMAS_REG_SMPS10_OUT1:
 870                 case PALMAS_REG_SMPS10_OUT2:
 871                         if (!PALMAS_PMIC_HAS(palmas, SMPS10_BOOST))
 872                                 continue;
 873                 }
 874
 875                 if ((id == PALMAS_REG_SMPS6) || (id == PALMAS_REG_SMPS8))
 876                         ramp_delay_support = true;
 877
 878                 if (ramp_delay_support) {
 879                         addr = palmas_regs_info[id].tstep_addr;
 880                         ret = palmas_smps_read(pmic->palmas, addr, &reg);
 881                         if (ret < 0) {
 882                                 dev_err(&pdev->dev,
 883                                         "reading TSTEP reg failed: %d\n", ret);
 884                                 return ret;
 885                         }
 886                         pmic->desc[id].ramp_delay =
 887                                         palmas_smps_ramp_delay[reg & 0x3];
 888                         pmic->ramp_delay[id] = pmic->desc[id].ramp_delay;
 889                 }
 890
 891                 /* Initialise sleep/init values from platform data */
 892                 if (pdata && pdata->reg_init[id]) {
 893                         reg_init = pdata->reg_init[id];
 894                         ret = palmas_smps_init(palmas, id, reg_init);
 895                         if (ret)
 896                                 return ret;
 897                 } else {
 898                         reg_init = NULL;
 899                 }
 900
 901                 /* Register the regulators */
 902                 pmic->desc[id].name = palmas_regs_info[id].name;
 903                 pmic->desc[id].id = id;
 904
 905                 switch (id) {
 906                 case PALMAS_REG_SMPS10_OUT1:
 907                 case PALMAS_REG_SMPS10_OUT2:
 908                         pmic->desc[id].n_voltages = PALMAS_SMPS10_NUM_VOLTAGES;
 909                         pmic->desc[id].ops = &palmas_ops_smps10;
 910                         pmic->desc[id].vsel_reg =
 911                                         PALMAS_BASE_TO_REG(PALMAS_SMPS_BASE,
 912                                                         PALMAS_SMPS10_CTRL);
 913                         pmic->desc[id].vsel_mask = SMPS10_VSEL;
 914                         pmic->desc[id].enable_reg =
 915                                         PALMAS_BASE_TO_REG(PALMAS_SMPS_BASE,
 916                                                         PALMAS_SMPS10_CTRL);
 917                         if (id == PALMAS_REG_SMPS10_OUT1)
 918                                 pmic->desc[id].enable_mask = SMPS10_SWITCH_EN;
 919                         else
 920                                 pmic->desc[id].enable_mask = SMPS10_BOOST_EN;
 921                         pmic->desc[id].bypass_reg =
 922                                         PALMAS_BASE_TO_REG(PALMAS_SMPS_BASE,
 923                                                         PALMAS_SMPS10_CTRL);
 924                         pmic->desc[id].bypass_mask = SMPS10_BYPASS_EN;
 925                         pmic->desc[id].min_uV = 3750000;
 926                         pmic->desc[id].uV_step = 1250000;
 927                         break;
 928                 default:
 929                         /*
 930                          * Read and store the RANGE bit for later use
 931                          * This must be done before regulator is probed,
 932                          * otherwise we error in probe with unsupportable
 933                          * ranges. Read the current smps mode for later use.
 934                          */
 935                         addr = palmas_regs_info[id].vsel_addr;
 936                         pmic->desc[id].n_linear_ranges = 3;
 937
 938                         ret = palmas_smps_read(pmic->palmas, addr, &reg);
 939                         if (ret)
 940                                 return ret;
 941                         if (reg & PALMAS_SMPS12_VOLTAGE_RANGE)
 942                                 pmic->range[id] = 1;
 943                         if (pmic->range[id])
 944                                 pmic->desc[id].linear_ranges = smps_high_ranges;
 945                         else
 946                                 pmic->desc[id].linear_ranges = smps_low_ranges;
 947
 948                         if (reg_init && reg_init->roof_floor)
 949                                 pmic->desc[id].ops =
 950                                                 &palmas_ops_ext_control_smps;
 951                         else
 952                                 pmic->desc[id].ops = &palmas_ops_smps;
 953                         pmic->desc[id].n_voltages = PALMAS_SMPS_NUM_VOLTAGES;
 954                         pmic->desc[id].vsel_reg =
 955                                         PALMAS_BASE_TO_REG(PALMAS_SMPS_BASE,
 956                                                 palmas_regs_info[id].vsel_addr);
 957                         pmic->desc[id].vsel_mask =
 958                                         PALMAS_SMPS12_VOLTAGE_VSEL_MASK;
 959
 960                         /* Read the smps mode for later use. */
 961                         addr = palmas_regs_info[id].ctrl_addr;
 962                         ret = palmas_smps_read(pmic->palmas, addr, &reg);
 963                         if (ret)
 964                                 return ret;
 965                         pmic->current_reg_mode[id] = reg &
 966                                         PALMAS_SMPS12_CTRL_MODE_ACTIVE_MASK;
 967                 }
 968
 969                 pmic->desc[id].type = REGULATOR_VOLTAGE;
 970                 pmic->desc[id].owner = THIS_MODULE;
 971
 972                 if (pdata)
 973                         config.init_data = pdata->reg_data[id];
 974                 else
 975                         config.init_data = NULL;
 976
 977                 pmic->desc[id].supply_name = palmas_regs_info[id].sname;
 978                 config.of_node = palmas_matches[id].of_node;
 979
 980                 rdev = devm_regulator_register(&pdev->dev, &pmic->desc[id],
 981                                                &config);
 982                 if (IS_ERR(rdev)) {
 983                         dev_err(&pdev->dev,
 984                                 "failed to register %s regulator\n",
 985                                 pdev->name);
 986                         return PTR_ERR(rdev);
 987                 }
 988
 989                 /* Save regulator for cleanup */
 990                 pmic->rdev[id] = rdev;
 991         }
 992
 993         /* Start this loop from the id left from previous loop */
 994         for (; id < PALMAS_NUM_REGS; id++) {
 995                 if (pdata && pdata->reg_init[id])
 996                         reg_init = pdata->reg_init[id];
 997                 else
 998                         reg_init = NULL;
 999
1000                 /* Miss out regulators which are not available due
1001                  * to alternate functions.
1002                  */
1003
1004                 /* Register the regulators */
1005                 pmic->desc[id].name = palmas_regs_info[id].name;
1006                 pmic->desc[id].id = id;
1007                 pmic->desc[id].type = REGULATOR_VOLTAGE;
1008                 pmic->desc[id].owner = THIS_MODULE;
1009
1010                 if (id < PALMAS_REG_REGEN1) {
1011                         pmic->desc[id].n_voltages = PALMAS_LDO_NUM_VOLTAGES;
1012                         if (reg_init && reg_init->roof_floor)
1013                                 pmic->desc[id].ops =
1014                                         &palmas_ops_ext_control_ldo;
1015                         else
1016                                 pmic->desc[id].ops = &palmas_ops_ldo;
1017                         pmic->desc[id].min_uV = 900000;
1018                         pmic->desc[id].uV_step = 50000;
1019                         pmic->desc[id].linear_min_sel = 1;
1020                         pmic->desc[id].enable_time = 500;
1021                         pmic->desc[id].vsel_reg =
1022                                         PALMAS_BASE_TO_REG(PALMAS_LDO_BASE,
1023                                                 palmas_regs_info[id].vsel_addr);
1024                         pmic->desc[id].vsel_mask =
1025                                         PALMAS_LDO1_VOLTAGE_VSEL_MASK;
1026                         pmic->desc[id].enable_reg =
1027                                         PALMAS_BASE_TO_REG(PALMAS_LDO_BASE,
1028                                                 palmas_regs_info[id].ctrl_addr);
1029                         pmic->desc[id].enable_mask =
1030                                         PALMAS_LDO1_CTRL_MODE_ACTIVE;
1031
1032                         /* Check if LDO8 is in tracking mode or not */
1033                         if (pdata && (id == PALMAS_REG_LDO8) &&
1034                                         pdata->enable_ldo8_tracking) {
1035                                 palmas_enable_ldo8_track(palmas);
1036                                 pmic->desc[id].min_uV = 450000;
1037                                 pmic->desc[id].uV_step = 25000;
1038                         }
1039
1040                         /* LOD6 in vibrator mode will have enable time 2000us */
1041                         if (pdata && pdata->ldo6_vibrator &&
1042                                 (id == PALMAS_REG_LDO6))
1043                                 pmic->desc[id].enable_time = 2000;
1044                 } else {
1045                         pmic->desc[id].n_voltages = 1;
1046                         if (reg_init && reg_init->roof_floor)
1047                                 pmic->desc[id].ops =
1048                                         &palmas_ops_ext_control_extreg;
1049                         else
1050                                 pmic->desc[id].ops = &palmas_ops_extreg;
1051                         pmic->desc[id].enable_reg =
1052                                         PALMAS_BASE_TO_REG(PALMAS_RESOURCE_BASE,
1053                                                 palmas_regs_info[id].ctrl_addr);
1054                         pmic->desc[id].enable_mask =
1055                                         PALMAS_REGEN1_CTRL_MODE_ACTIVE;
1056                 }
1057
1058                 if (pdata)
1059                         config.init_data = pdata->reg_data[id];
1060                 else
1061                         config.init_data = NULL;
1062
1063                 pmic->desc[id].supply_name = palmas_regs_info[id].sname;
1064                 config.of_node = palmas_matches[id].of_node;
1065
1066                 rdev = devm_regulator_register(&pdev->dev, &pmic->desc[id],
1067                                                &config);
1068                 if (IS_ERR(rdev)) {
1069                         dev_err(&pdev->dev,
1070                                 "failed to register %s regulator\n",
1071                                 pdev->name);
1072                         return PTR_ERR(rdev);
1073                 }
1074
1075                 /* Save regulator for cleanup */
1076                 pmic->rdev[id] = rdev;
1077
1078                 /* Initialise sleep/init values from platform data */
1079                 if (pdata) {
1080                         reg_init = pdata->reg_init[id];
1081                         if (reg_init) {
1082                                 if (id < PALMAS_REG_REGEN1)
1083                                         ret = palmas_ldo_init(palmas,
1084                                                         id, reg_init);
1085                                 else
1086                                         ret = palmas_extreg_init(palmas,
1087                                                         id, reg_init);
1088                                 if (ret)
1089                                         return ret;
1090                         }
1091                 }
1092         }
1093
1094
1095         return 0;
1096 }
1097
1098 static const struct of_device_id of_palmas_match_tbl[] = {
1099         { .compatible = "ti,palmas-pmic", },
1100         { .compatible = "ti,twl6035-pmic", },
1101         { .compatible = "ti,twl6036-pmic", },
1102         { .compatible = "ti,twl6037-pmic", },
1103         { .compatible = "ti,tps65913-pmic", },
1104         { .compatible = "ti,tps65914-pmic", },
1105         { .compatible = "ti,tps80036-pmic", },
1106         { .compatible = "ti,tps659038-pmic", },
1107         { /* end */ }
1108 };
1109
1110 static struct platform_driver palmas_driver = {
1111         .driver = {
1112                 .name = "palmas-pmic",
1113                 .of_match_table = of_palmas_match_tbl,
1114                 .owner = THIS_MODULE,
1115         },
1116         .probe = palmas_regulators_probe,
1117 };
1118
1119 static int __init palmas_init(void)
1120 {
1121         return platform_driver_register(&palmas_driver);
1122 }
1123 subsys_initcall(palmas_init);
1124
1125 static void __exit palmas_exit(void)
1126 {
1127         platform_driver_unregister(&palmas_driver);
1128 }
1129 module_exit(palmas_exit);
1130
1131 MODULE_AUTHOR("Graeme Gregory <gg@slimlogic.co.uk>");
1132 MODULE_DESCRIPTION("Palmas voltage regulator driver");
1133 MODULE_LICENSE("GPL");
1134 MODULE_ALIAS("platform:palmas-pmic");
1135 MODULE_DEVICE_TABLE(of, of_palmas_match_tbl);