drivers/regulator/s2mps11.c

   1 /*
   2  * s2mps11.c
   3  *
   4  * Copyright (c) 2012-2014 Samsung Electronics Co., Ltd
   5  *              http://www.samsung.com
   6  *
   7  * This program is free software; you can redistribute  it and/or modify it
   8  * under  the terms of  the GNU General  Public License as published by the
   9  * Free Software Foundation;  either version 2 of the  License, or (at your
  10  * option) any later version.
  11  *
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU General Public License for more details.
  16  *
  17  */
  18
  19 #include <linux/bug.h>
  20 #include <linux/err.h>
  21 #include <linux/gpio.h>
  22 #include <linux/slab.h>
  23 #include <linux/module.h>
  24 #include <linux/of.h>
  25 #include <linux/regmap.h>
  26 #include <linux/platform_device.h>
  27 #include <linux/regulator/driver.h>
  28 #include <linux/regulator/machine.h>
  29 #include <linux/regulator/of_regulator.h>
  30 #include <linux/mfd/samsung/core.h>
  31 #include <linux/mfd/samsung/s2mps11.h>
  32 #include <linux/mfd/samsung/s2mps14.h>
  33
  34 struct s2mps11_info {
  35         unsigned int rdev_num;
  36         int ramp_delay2;
  37         int ramp_delay34;
  38         int ramp_delay5;
  39         int ramp_delay16;
  40         int ramp_delay7810;
  41         int ramp_delay9;
  42         /*
  43          * One bit for each S2MPS14 regulator whether the suspend mode
  44          * was enabled.
  45          */
  46         unsigned int s2mps14_suspend_state:30;
  47 };
  48
  49 static int get_ramp_delay(int ramp_delay)
  50 {
  51         unsigned char cnt = 0;
  52
  53         ramp_delay /= 6250;
  54
  55         while (true) {
  56                 ramp_delay = ramp_delay >> 1;
  57                 if (ramp_delay == 0)
  58                         break;
  59                 cnt++;
  60         }
  61
  62         if (cnt > 3)
  63                 cnt = 3;
  64
  65         return cnt;
  66 }
  67
  68 static int s2mps11_regulator_set_voltage_time_sel(struct regulator_dev *rdev,
  69                                    unsigned int old_selector,
  70                                    unsigned int new_selector)
  71 {
  72         struct s2mps11_info *s2mps11 = rdev_get_drvdata(rdev);
  73         unsigned int ramp_delay = 0;
  74         int old_volt, new_volt;
  75
  76         switch (rdev_get_id(rdev)) {
  77         case S2MPS11_BUCK2:
  78                 ramp_delay = s2mps11->ramp_delay2;
  79                 break;
  80         case S2MPS11_BUCK3:
  81         case S2MPS11_BUCK4:
  82                 ramp_delay = s2mps11->ramp_delay34;
  83                 break;
  84         case S2MPS11_BUCK5:
  85                 ramp_delay = s2mps11->ramp_delay5;
  86                 break;
  87         case S2MPS11_BUCK6:
  88         case S2MPS11_BUCK1:
  89                 ramp_delay = s2mps11->ramp_delay16;
  90                 break;
  91         case S2MPS11_BUCK7:
  92         case S2MPS11_BUCK8:
  93         case S2MPS11_BUCK10:
  94                 ramp_delay = s2mps11->ramp_delay7810;
  95                 break;
  96         case S2MPS11_BUCK9:
  97                 ramp_delay = s2mps11->ramp_delay9;
  98         }
  99
 100         if (ramp_delay == 0)
 101                 ramp_delay = rdev->desc->ramp_delay;
 102
 103         old_volt = rdev->desc->min_uV + (rdev->desc->uV_step * old_selector);
 104         new_volt = rdev->desc->min_uV + (rdev->desc->uV_step * new_selector);
 105
 106         return DIV_ROUND_UP(abs(new_volt - old_volt), ramp_delay);
 107 }
 108
 109 static int s2mps11_set_ramp_delay(struct regulator_dev *rdev, int ramp_delay)
 110 {
 111         struct s2mps11_info *s2mps11 = rdev_get_drvdata(rdev);
 112         unsigned int ramp_val, ramp_shift, ramp_reg = S2MPS11_REG_RAMP_BUCK;
 113         unsigned int ramp_enable = 1, enable_shift = 0;
 114         int ret;
 115
 116         switch (rdev_get_id(rdev)) {
 117         case S2MPS11_BUCK1:
 118                 if (ramp_delay > s2mps11->ramp_delay16)
 119                         s2mps11->ramp_delay16 = ramp_delay;
 120                 else
 121                         ramp_delay = s2mps11->ramp_delay16;
 122
 123                 ramp_shift = S2MPS11_BUCK16_RAMP_SHIFT;
 124                 break;
 125         case S2MPS11_BUCK2:
 126                 enable_shift = S2MPS11_BUCK2_RAMP_EN_SHIFT;
 127                 if (!ramp_delay) {
 128                         ramp_enable = 0;
 129                         break;
 130                 }
 131
 132                 s2mps11->ramp_delay2 = ramp_delay;
 133                 ramp_shift = S2MPS11_BUCK2_RAMP_SHIFT;
 134                 ramp_reg = S2MPS11_REG_RAMP;
 135                 break;
 136         case S2MPS11_BUCK3:
 137                 enable_shift = S2MPS11_BUCK3_RAMP_EN_SHIFT;
 138                 if (!ramp_delay) {
 139                         ramp_enable = 0;
 140                         break;
 141                 }
 142
 143                 if (ramp_delay > s2mps11->ramp_delay34)
 144                         s2mps11->ramp_delay34 = ramp_delay;
 145                 else
 146                         ramp_delay = s2mps11->ramp_delay34;
 147
 148                 ramp_shift = S2MPS11_BUCK34_RAMP_SHIFT;
 149                 ramp_reg = S2MPS11_REG_RAMP;
 150                 break;
 151         case S2MPS11_BUCK4:
 152                 enable_shift = S2MPS11_BUCK4_RAMP_EN_SHIFT;
 153                 if (!ramp_delay) {
 154                         ramp_enable = 0;
 155                         break;
 156                 }
 157
 158                 if (ramp_delay > s2mps11->ramp_delay34)
 159                         s2mps11->ramp_delay34 = ramp_delay;
 160                 else
 161                         ramp_delay = s2mps11->ramp_delay34;
 162
 163                 ramp_shift = S2MPS11_BUCK34_RAMP_SHIFT;
 164                 ramp_reg = S2MPS11_REG_RAMP;
 165                 break;
 166         case S2MPS11_BUCK5:
 167                 s2mps11->ramp_delay5 = ramp_delay;
 168                 ramp_shift = S2MPS11_BUCK5_RAMP_SHIFT;
 169                 break;
 170         case S2MPS11_BUCK6:
 171                 enable_shift = S2MPS11_BUCK6_RAMP_EN_SHIFT;
 172                 if (!ramp_delay) {
 173                         ramp_enable = 0;
 174                         break;
 175                 }
 176
 177                 if (ramp_delay > s2mps11->ramp_delay16)
 178                         s2mps11->ramp_delay16 = ramp_delay;
 179                 else
 180                         ramp_delay = s2mps11->ramp_delay16;
 181
 182                 ramp_shift = S2MPS11_BUCK16_RAMP_SHIFT;
 183                 break;
 184         case S2MPS11_BUCK7:
 185         case S2MPS11_BUCK8:
 186         case S2MPS11_BUCK10:
 187                 if (ramp_delay > s2mps11->ramp_delay7810)
 188                         s2mps11->ramp_delay7810 = ramp_delay;
 189                 else
 190                         ramp_delay = s2mps11->ramp_delay7810;
 191
 192                 ramp_shift = S2MPS11_BUCK7810_RAMP_SHIFT;
 193                 break;
 194         case S2MPS11_BUCK9:
 195                 s2mps11->ramp_delay9 = ramp_delay;
 196                 ramp_shift = S2MPS11_BUCK9_RAMP_SHIFT;
 197                 break;
 198         default:
 199                 return 0;
 200         }
 201
 202         if (!ramp_enable)
 203                 goto ramp_disable;
 204
 205         if (enable_shift) {
 206                 ret = regmap_update_bits(rdev->regmap, S2MPS11_REG_RAMP,
 207                                         1 << enable_shift, 1 << enable_shift);
 208                 if (ret) {
 209                         dev_err(&rdev->dev, "failed to enable ramp rate\n");
 210                         return ret;
 211                 }
 212         }
 213
 214         ramp_val = get_ramp_delay(ramp_delay);
 215
 216         return regmap_update_bits(rdev->regmap, ramp_reg, 0x3 << ramp_shift,
 217                                   ramp_val << ramp_shift);
 218
 219 ramp_disable:
 220         return regmap_update_bits(rdev->regmap, S2MPS11_REG_RAMP,
 221                                   1 << enable_shift, 0);
 222 }
 223
 224 static struct regulator_ops s2mps11_ldo_ops = {
 225         .list_voltage           = regulator_list_voltage_linear,
 226         .map_voltage            = regulator_map_voltage_linear,
 227         .is_enabled             = regulator_is_enabled_regmap,
 228         .enable                 = regulator_enable_regmap,
 229         .disable                = regulator_disable_regmap,
 230         .get_voltage_sel        = regulator_get_voltage_sel_regmap,
 231         .set_voltage_sel        = regulator_set_voltage_sel_regmap,
 232         .set_voltage_time_sel   = regulator_set_voltage_time_sel,
 233 };
 234
 235 static struct regulator_ops s2mps11_buck_ops = {
 236         .list_voltage           = regulator_list_voltage_linear,
 237         .map_voltage            = regulator_map_voltage_linear,
 238         .is_enabled             = regulator_is_enabled_regmap,
 239         .enable                 = regulator_enable_regmap,
 240         .disable                = regulator_disable_regmap,
 241         .get_voltage_sel        = regulator_get_voltage_sel_regmap,
 242         .set_voltage_sel        = regulator_set_voltage_sel_regmap,
 243         .set_voltage_time_sel   = s2mps11_regulator_set_voltage_time_sel,
 244         .set_ramp_delay         = s2mps11_set_ramp_delay,
 245 };
 246
 247 #define regulator_desc_s2mps11_ldo1(num)        {               \
 248         .name           = "LDO"#num,                    \
 249         .id             = S2MPS11_LDO##num,             \
 250         .ops            = &s2mps11_ldo_ops,             \
 251         .type           = REGULATOR_VOLTAGE,            \
 252         .owner          = THIS_MODULE,                  \
 253         .min_uV         = S2MPS11_LDO_MIN,              \
 254         .uV_step        = S2MPS11_LDO_STEP1,            \
 255         .n_voltages     = S2MPS11_LDO_N_VOLTAGES,       \
 256         .vsel_reg       = S2MPS11_REG_L1CTRL + num - 1, \
 257         .vsel_mask      = S2MPS11_LDO_VSEL_MASK,        \
 258         .enable_reg     = S2MPS11_REG_L1CTRL + num - 1, \
 259         .enable_mask    = S2MPS11_ENABLE_MASK           \
 260 }
 261 #define regulator_desc_s2mps11_ldo2(num) {              \
 262         .name           = "LDO"#num,                    \
 263         .id             = S2MPS11_LDO##num,             \
 264         .ops            = &s2mps11_ldo_ops,             \
 265         .type           = REGULATOR_VOLTAGE,            \
 266         .owner          = THIS_MODULE,                  \
 267         .min_uV         = S2MPS11_LDO_MIN,              \
 268         .uV_step        = S2MPS11_LDO_STEP2,            \
 269         .n_voltages     = S2MPS11_LDO_N_VOLTAGES,       \
 270         .vsel_reg       = S2MPS11_REG_L1CTRL + num - 1, \
 271         .vsel_mask      = S2MPS11_LDO_VSEL_MASK,        \
 272         .enable_reg     = S2MPS11_REG_L1CTRL + num - 1, \
 273         .enable_mask    = S2MPS11_ENABLE_MASK           \
 274 }
 275
 276 #define regulator_desc_s2mps11_buck1_4(num) {                   \
 277         .name           = "BUCK"#num,                           \
 278         .id             = S2MPS11_BUCK##num,                    \
 279         .ops            = &s2mps11_buck_ops,                    \
 280         .type           = REGULATOR_VOLTAGE,                    \
 281         .owner          = THIS_MODULE,                          \
 282         .min_uV         = S2MPS11_BUCK_MIN1,                    \
 283         .uV_step        = S2MPS11_BUCK_STEP1,                   \
 284         .n_voltages     = S2MPS11_BUCK_N_VOLTAGES,              \
 285         .ramp_delay     = S2MPS11_RAMP_DELAY,                   \
 286         .vsel_reg       = S2MPS11_REG_B1CTRL2 + (num - 1) * 2,  \
 287         .vsel_mask      = S2MPS11_BUCK_VSEL_MASK,               \
 288         .enable_reg     = S2MPS11_REG_B1CTRL1 + (num - 1) * 2,  \
 289         .enable_mask    = S2MPS11_ENABLE_MASK                   \
 290 }
 291
 292 #define regulator_desc_s2mps11_buck5 {                          \
 293         .name           = "BUCK5",                              \
 294         .id             = S2MPS11_BUCK5,                        \
 295         .ops            = &s2mps11_buck_ops,                    \
 296         .type           = REGULATOR_VOLTAGE,                    \
 297         .owner          = THIS_MODULE,                          \
 298         .min_uV         = S2MPS11_BUCK_MIN1,                    \
 299         .uV_step        = S2MPS11_BUCK_STEP1,                   \
 300         .n_voltages     = S2MPS11_BUCK_N_VOLTAGES,              \
 301         .ramp_delay     = S2MPS11_RAMP_DELAY,                   \
 302         .vsel_reg       = S2MPS11_REG_B5CTRL2,                  \
 303         .vsel_mask      = S2MPS11_BUCK_VSEL_MASK,               \
 304         .enable_reg     = S2MPS11_REG_B5CTRL1,                  \
 305         .enable_mask    = S2MPS11_ENABLE_MASK                   \
 306 }
 307
 308 #define regulator_desc_s2mps11_buck6_8(num) {                   \
 309         .name           = "BUCK"#num,                           \
 310         .id             = S2MPS11_BUCK##num,                    \
 311         .ops            = &s2mps11_buck_ops,                    \
 312         .type           = REGULATOR_VOLTAGE,                    \
 313         .owner          = THIS_MODULE,                          \
 314         .min_uV         = S2MPS11_BUCK_MIN1,                    \
 315         .uV_step        = S2MPS11_BUCK_STEP1,                   \
 316         .n_voltages     = S2MPS11_BUCK_N_VOLTAGES,              \
 317         .ramp_delay     = S2MPS11_RAMP_DELAY,                   \
 318         .vsel_reg       = S2MPS11_REG_B6CTRL2 + (num - 6) * 2,  \
 319         .vsel_mask      = S2MPS11_BUCK_VSEL_MASK,               \
 320         .enable_reg     = S2MPS11_REG_B6CTRL1 + (num - 6) * 2,  \
 321         .enable_mask    = S2MPS11_ENABLE_MASK                   \
 322 }
 323
 324 #define regulator_desc_s2mps11_buck9 {                          \
 325         .name           = "BUCK9",                              \
 326         .id             = S2MPS11_BUCK9,                        \
 327         .ops            = &s2mps11_buck_ops,                    \
 328         .type           = REGULATOR_VOLTAGE,                    \
 329         .owner          = THIS_MODULE,                          \
 330         .min_uV         = S2MPS11_BUCK_MIN3,                    \
 331         .uV_step        = S2MPS11_BUCK_STEP3,                   \
 332         .n_voltages     = S2MPS11_BUCK_N_VOLTAGES,              \
 333         .ramp_delay     = S2MPS11_RAMP_DELAY,                   \
 334         .vsel_reg       = S2MPS11_REG_B9CTRL2,                  \
 335         .vsel_mask      = S2MPS11_BUCK_VSEL_MASK,               \
 336         .enable_reg     = S2MPS11_REG_B9CTRL1,                  \
 337         .enable_mask    = S2MPS11_ENABLE_MASK                   \
 338 }
 339
 340 #define regulator_desc_s2mps11_buck10 {                         \
 341         .name           = "BUCK10",                             \
 342         .id             = S2MPS11_BUCK10,                       \
 343         .ops            = &s2mps11_buck_ops,                    \
 344         .type           = REGULATOR_VOLTAGE,                    \
 345         .owner          = THIS_MODULE,                          \
 346         .min_uV         = S2MPS11_BUCK_MIN2,                    \
 347         .uV_step        = S2MPS11_BUCK_STEP2,                   \
 348         .n_voltages     = S2MPS11_BUCK_N_VOLTAGES,              \
 349         .ramp_delay     = S2MPS11_RAMP_DELAY,                   \
 350         .vsel_reg       = S2MPS11_REG_B10CTRL2,                 \
 351         .vsel_mask      = S2MPS11_BUCK_VSEL_MASK,               \
 352         .enable_reg     = S2MPS11_REG_B10CTRL1,                 \
 353         .enable_mask    = S2MPS11_ENABLE_MASK                   \
 354 }
 355
 356 static const struct regulator_desc s2mps11_regulators[] = {
 357         regulator_desc_s2mps11_ldo2(1),
 358         regulator_desc_s2mps11_ldo1(2),
 359         regulator_desc_s2mps11_ldo1(3),
 360         regulator_desc_s2mps11_ldo1(4),
 361         regulator_desc_s2mps11_ldo1(5),
 362         regulator_desc_s2mps11_ldo2(6),
 363         regulator_desc_s2mps11_ldo1(7),
 364         regulator_desc_s2mps11_ldo1(8),
 365         regulator_desc_s2mps11_ldo1(9),
 366         regulator_desc_s2mps11_ldo1(10),
 367         regulator_desc_s2mps11_ldo2(11),
 368         regulator_desc_s2mps11_ldo1(12),
 369         regulator_desc_s2mps11_ldo1(13),
 370         regulator_desc_s2mps11_ldo1(14),
 371         regulator_desc_s2mps11_ldo1(15),
 372         regulator_desc_s2mps11_ldo1(16),
 373         regulator_desc_s2mps11_ldo1(17),
 374         regulator_desc_s2mps11_ldo1(18),
 375         regulator_desc_s2mps11_ldo1(19),
 376         regulator_desc_s2mps11_ldo1(20),
 377         regulator_desc_s2mps11_ldo1(21),
 378         regulator_desc_s2mps11_ldo2(22),
 379         regulator_desc_s2mps11_ldo2(23),
 380         regulator_desc_s2mps11_ldo1(24),
 381         regulator_desc_s2mps11_ldo1(25),
 382         regulator_desc_s2mps11_ldo1(26),
 383         regulator_desc_s2mps11_ldo2(27),
 384         regulator_desc_s2mps11_ldo1(28),
 385         regulator_desc_s2mps11_ldo1(29),
 386         regulator_desc_s2mps11_ldo1(30),
 387         regulator_desc_s2mps11_ldo1(31),
 388         regulator_desc_s2mps11_ldo1(32),
 389         regulator_desc_s2mps11_ldo1(33),
 390         regulator_desc_s2mps11_ldo1(34),
 391         regulator_desc_s2mps11_ldo1(35),
 392         regulator_desc_s2mps11_ldo1(36),
 393         regulator_desc_s2mps11_ldo1(37),
 394         regulator_desc_s2mps11_ldo1(38),
 395         regulator_desc_s2mps11_buck1_4(1),
 396         regulator_desc_s2mps11_buck1_4(2),
 397         regulator_desc_s2mps11_buck1_4(3),
 398         regulator_desc_s2mps11_buck1_4(4),
 399         regulator_desc_s2mps11_buck5,
 400         regulator_desc_s2mps11_buck6_8(6),
 401         regulator_desc_s2mps11_buck6_8(7),
 402         regulator_desc_s2mps11_buck6_8(8),
 403         regulator_desc_s2mps11_buck9,
 404         regulator_desc_s2mps11_buck10,
 405 };
 406
 407 static int s2mps14_regulator_enable(struct regulator_dev *rdev)
 408 {
 409         struct s2mps11_info *s2mps11 = rdev_get_drvdata(rdev);
 410         unsigned int val;
 411
 412         if (s2mps11->s2mps14_suspend_state & (1 << rdev_get_id(rdev)))
 413                 val = S2MPS14_ENABLE_SUSPEND;
 414         else
 415                 val = rdev->desc->enable_mask;
 416
 417         return regmap_update_bits(rdev->regmap, rdev->desc->enable_reg,
 418                         rdev->desc->enable_mask, val);
 419 }
 420
 421 static int s2mps14_regulator_set_suspend_disable(struct regulator_dev *rdev)
 422 {
 423         int ret;
 424         unsigned int val;
 425         struct s2mps11_info *s2mps11 = rdev_get_drvdata(rdev);
 426
 427         /* LDO3 should be always on and does not support suspend mode */
 428         if (rdev_get_id(rdev) == S2MPS14_LDO3)
 429                 return 0;
 430
 431         ret = regmap_read(rdev->regmap, rdev->desc->enable_reg, &val);
 432         if (ret < 0)
 433                 return ret;
 434
 435         s2mps11->s2mps14_suspend_state |= (1 << rdev_get_id(rdev));
 436         /*
 437          * Don't enable suspend mode if regulator is already disabled because
 438          * this would effectively for a short time turn on the regulator after
 439          * resuming.
 440          * However we still want to toggle the suspend_state bit for regulator
 441          * in case if it got enabled before suspending the system.
 442          */
 443         if (!(val & rdev->desc->enable_mask))
 444                 return 0;
 445
 446         return regmap_update_bits(rdev->regmap, rdev->desc->enable_reg,
 447                         rdev->desc->enable_mask, S2MPS14_ENABLE_SUSPEND);
 448 }
 449
 450 static struct regulator_ops s2mps14_reg_ops = {
 451         .list_voltage           = regulator_list_voltage_linear,
 452         .map_voltage            = regulator_map_voltage_linear,
 453         .is_enabled             = regulator_is_enabled_regmap,
 454         .enable                 = s2mps14_regulator_enable,
 455         .disable                = regulator_disable_regmap,
 456         .get_voltage_sel        = regulator_get_voltage_sel_regmap,
 457         .set_voltage_sel        = regulator_set_voltage_sel_regmap,
 458         .set_voltage_time_sel   = regulator_set_voltage_time_sel,
 459         .set_suspend_disable    = s2mps14_regulator_set_suspend_disable,
 460 };
 461
 462 #define regulator_desc_s2mps14_ldo1(num) {              \
 463         .name           = "LDO"#num,                    \
 464         .id             = S2MPS14_LDO##num,             \
 465         .ops            = &s2mps14_reg_ops,             \
 466         .type           = REGULATOR_VOLTAGE,            \
 467         .owner          = THIS_MODULE,                  \
 468         .min_uV         = S2MPS14_LDO_MIN_800MV,        \
 469         .uV_step        = S2MPS14_LDO_STEP_25MV,        \
 470         .n_voltages     = S2MPS14_LDO_N_VOLTAGES,       \
 471         .vsel_reg       = S2MPS14_REG_L1CTRL + num - 1, \
 472         .vsel_mask      = S2MPS14_LDO_VSEL_MASK,        \
 473         .enable_reg     = S2MPS14_REG_L1CTRL + num - 1, \
 474         .enable_mask    = S2MPS14_ENABLE_MASK           \
 475 }
 476 #define regulator_desc_s2mps14_ldo2(num) {              \
 477         .name           = "LDO"#num,                    \
 478         .id             = S2MPS14_LDO##num,             \
 479         .ops            = &s2mps14_reg_ops,             \
 480         .type           = REGULATOR_VOLTAGE,            \
 481         .owner          = THIS_MODULE,                  \
 482         .min_uV         = S2MPS14_LDO_MIN_1800MV,       \
 483         .uV_step        = S2MPS14_LDO_STEP_25MV,        \
 484         .n_voltages     = S2MPS14_LDO_N_VOLTAGES,       \
 485         .vsel_reg       = S2MPS14_REG_L1CTRL + num - 1, \
 486         .vsel_mask      = S2MPS14_LDO_VSEL_MASK,        \
 487         .enable_reg     = S2MPS14_REG_L1CTRL + num - 1, \
 488         .enable_mask    = S2MPS14_ENABLE_MASK           \
 489 }
 490 #define regulator_desc_s2mps14_ldo3(num) {              \
 491         .name           = "LDO"#num,                    \
 492         .id             = S2MPS14_LDO##num,             \
 493         .ops            = &s2mps14_reg_ops,             \
 494         .type           = REGULATOR_VOLTAGE,            \
 495         .owner          = THIS_MODULE,                  \
 496         .min_uV         = S2MPS14_LDO_MIN_800MV,        \
 497         .uV_step        = S2MPS14_LDO_STEP_12_5MV,      \
 498         .n_voltages     = S2MPS14_LDO_N_VOLTAGES,       \
 499         .vsel_reg       = S2MPS14_REG_L1CTRL + num - 1, \
 500         .vsel_mask      = S2MPS14_LDO_VSEL_MASK,        \
 501         .enable_reg     = S2MPS14_REG_L1CTRL + num - 1, \
 502         .enable_mask    = S2MPS14_ENABLE_MASK           \
 503 }
 504 #define regulator_desc_s2mps14_buck1235(num) {                  \
 505         .name           = "BUCK"#num,                           \
 506         .id             = S2MPS14_BUCK##num,                    \
 507         .ops            = &s2mps14_reg_ops,                     \
 508         .type           = REGULATOR_VOLTAGE,                    \
 509         .owner          = THIS_MODULE,                          \
 510         .min_uV         = S2MPS14_BUCK1235_MIN_600MV,           \
 511         .uV_step        = S2MPS14_BUCK1235_STEP_6_25MV,         \
 512         .n_voltages     = S2MPS14_BUCK_N_VOLTAGES,              \
 513         .linear_min_sel = S2MPS14_BUCK1235_START_SEL,           \
 514         .ramp_delay     = S2MPS14_BUCK_RAMP_DELAY,              \
 515         .vsel_reg       = S2MPS14_REG_B1CTRL2 + (num - 1) * 2,  \
 516         .vsel_mask      = S2MPS14_BUCK_VSEL_MASK,               \
 517         .enable_reg     = S2MPS14_REG_B1CTRL1 + (num - 1) * 2,  \
 518         .enable_mask    = S2MPS14_ENABLE_MASK                   \
 519 }
 520 #define regulator_desc_s2mps14_buck4(num) {                     \
 521         .name           = "BUCK"#num,                           \
 522         .id             = S2MPS14_BUCK##num,                    \
 523         .ops            = &s2mps14_reg_ops,                     \
 524         .type           = REGULATOR_VOLTAGE,                    \
 525         .owner          = THIS_MODULE,                          \
 526         .min_uV         = S2MPS14_BUCK4_MIN_1400MV,             \
 527         .uV_step        = S2MPS14_BUCK4_STEP_12_5MV,            \
 528         .n_voltages     = S2MPS14_BUCK_N_VOLTAGES,              \
 529         .linear_min_sel = S2MPS14_BUCK4_START_SEL,              \
 530         .ramp_delay     = S2MPS14_BUCK_RAMP_DELAY,              \
 531         .vsel_reg       = S2MPS14_REG_B1CTRL2 + (num - 1) * 2,  \
 532         .vsel_mask      = S2MPS14_BUCK_VSEL_MASK,               \
 533         .enable_reg     = S2MPS14_REG_B1CTRL1 + (num - 1) * 2,  \
 534         .enable_mask    = S2MPS14_ENABLE_MASK                   \
 535 }
 536
 537 static const struct regulator_desc s2mps14_regulators[] = {
 538         regulator_desc_s2mps14_ldo3(1),
 539         regulator_desc_s2mps14_ldo3(2),
 540         regulator_desc_s2mps14_ldo1(3),
 541         regulator_desc_s2mps14_ldo1(4),
 542         regulator_desc_s2mps14_ldo3(5),
 543         regulator_desc_s2mps14_ldo3(6),
 544         regulator_desc_s2mps14_ldo1(7),
 545         regulator_desc_s2mps14_ldo2(8),
 546         regulator_desc_s2mps14_ldo3(9),
 547         regulator_desc_s2mps14_ldo3(10),
 548         regulator_desc_s2mps14_ldo1(11),
 549         regulator_desc_s2mps14_ldo2(12),
 550         regulator_desc_s2mps14_ldo2(13),
 551         regulator_desc_s2mps14_ldo2(14),
 552         regulator_desc_s2mps14_ldo2(15),
 553         regulator_desc_s2mps14_ldo2(16),
 554         regulator_desc_s2mps14_ldo2(17),
 555         regulator_desc_s2mps14_ldo2(18),
 556         regulator_desc_s2mps14_ldo1(19),
 557         regulator_desc_s2mps14_ldo1(20),
 558         regulator_desc_s2mps14_ldo1(21),
 559         regulator_desc_s2mps14_ldo3(22),
 560         regulator_desc_s2mps14_ldo1(23),
 561         regulator_desc_s2mps14_ldo2(24),
 562         regulator_desc_s2mps14_ldo2(25),
 563         regulator_desc_s2mps14_buck1235(1),
 564         regulator_desc_s2mps14_buck1235(2),
 565         regulator_desc_s2mps14_buck1235(3),
 566         regulator_desc_s2mps14_buck4(4),
 567         regulator_desc_s2mps14_buck1235(5),
 568 };
 569
 570 static int s2mps11_pmic_probe(struct platform_device *pdev)
 571 {
 572         struct sec_pmic_dev *iodev = dev_get_drvdata(pdev->dev.parent);
 573         struct sec_platform_data *pdata = iodev->pdata;
 574         struct of_regulator_match *rdata = NULL;
 575         struct device_node *reg_np = NULL;
 576         struct regulator_config config = { };
 577         struct s2mps11_info *s2mps11;
 578         int i, ret = 0;
 579         const struct regulator_desc *regulators;
 580         enum sec_device_type dev_type;
 581
 582         s2mps11 = devm_kzalloc(&pdev->dev, sizeof(struct s2mps11_info),
 583                                 GFP_KERNEL);
 584         if (!s2mps11)
 585                 return -ENOMEM;
 586
 587         dev_type = platform_get_device_id(pdev)->driver_data;
 588         switch (dev_type) {
 589         case S2MPS11X:
 590                 s2mps11->rdev_num = ARRAY_SIZE(s2mps11_regulators);
 591                 regulators = s2mps11_regulators;
 592                 break;
 593         case S2MPS14X:
 594                 s2mps11->rdev_num = ARRAY_SIZE(s2mps14_regulators);
 595                 regulators = s2mps14_regulators;
 596                 break;
 597         default:
 598                 dev_err(&pdev->dev, "Invalid device type: %u\n", dev_type);
 599                 return -EINVAL;
 600         };
 601
 602         if (!iodev->dev->of_node) {
 603                 if (pdata) {
 604                         goto common_reg;
 605                 } else {
 606                         dev_err(pdev->dev.parent,
 607                                 "Platform data or DT node not supplied\n");
 608                         return -ENODEV;
 609                 }
 610         }
 611
 612         rdata = kzalloc(sizeof(*rdata) * s2mps11->rdev_num, GFP_KERNEL);
 613         if (!rdata)
 614                 return -ENOMEM;
 615
 616         for (i = 0; i < s2mps11->rdev_num; i++)
 617                 rdata[i].name = regulators[i].name;
 618
 619         reg_np = of_get_child_by_name(iodev->dev->of_node, "regulators");
 620         if (!reg_np) {
 621                 dev_err(&pdev->dev, "could not find regulators sub-node\n");
 622                 ret = -EINVAL;
 623                 goto out;
 624         }
 625
 626         of_regulator_match(&pdev->dev, reg_np, rdata, s2mps11->rdev_num);
 627         of_node_put(reg_np);
 628
 629 common_reg:
 630         platform_set_drvdata(pdev, s2mps11);
 631
 632         config.dev = &pdev->dev;
 633         config.regmap = iodev->regmap_pmic;
 634         config.driver_data = s2mps11;
 635         for (i = 0; i < s2mps11->rdev_num; i++) {
 636                 struct regulator_dev *regulator;
 637
 638                 if (!reg_np) {
 639                         config.init_data = pdata->regulators[i].initdata;
 640                         config.of_node = pdata->regulators[i].reg_node;
 641                 } else {
 642                         config.init_data = rdata[i].init_data;
 643                         config.of_node = rdata[i].of_node;
 644                 }
 645
 646                 regulator = devm_regulator_register(&pdev->dev,
 647                                                 &regulators[i], &config);
 648                 if (IS_ERR(regulator)) {
 649                         ret = PTR_ERR(regulator);
 650                         dev_err(&pdev->dev, "regulator init failed for %d\n",
 651                                 i);
 652                         goto out;
 653                 }
 654         }
 655
 656 out:
 657         kfree(rdata);
 658
 659         return ret;
 660 }
 661
 662 static const struct platform_device_id s2mps11_pmic_id[] = {
 663         { "s2mps11-pmic", S2MPS11X},
 664         { "s2mps14-pmic", S2MPS14X},
 665         { },
 666 };
 667 MODULE_DEVICE_TABLE(platform, s2mps11_pmic_id);
 668
 669 static struct platform_driver s2mps11_pmic_driver = {
 670         .driver = {
 671                 .name = "s2mps11-pmic",
 672                 .owner = THIS_MODULE,
 673         },
 674         .probe = s2mps11_pmic_probe,
 675         .id_table = s2mps11_pmic_id,
 676 };
 677
 678 static int __init s2mps11_pmic_init(void)
 679 {
 680         return platform_driver_register(&s2mps11_pmic_driver);
 681 }
 682 subsys_initcall(s2mps11_pmic_init);
 683
 684 static void __exit s2mps11_pmic_exit(void)
 685 {
 686         platform_driver_unregister(&s2mps11_pmic_driver);
 687 }
 688 module_exit(s2mps11_pmic_exit);
 689
 690 /* Module information */
 691 MODULE_AUTHOR("Sangbeom Kim <sbkim73@samsung.com>");
 692 MODULE_DESCRIPTION("SAMSUNG S2MPS11/S2MPS14 Regulator Driver");
 693 MODULE_LICENSE("GPL");