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/of_gpio.h>
  31 #include <linux/mfd/samsung/core.h>
  32 #include <linux/mfd/samsung/s2mps11.h>
  33 #include <linux/mfd/samsung/s2mps13.h>
  34 #include <linux/mfd/samsung/s2mps14.h>
  35 #include <linux/mfd/samsung/s2mps15.h>
  36 #include <linux/mfd/samsung/s2mpu02.h>
  37
  38 /* The highest number of possible regulators for supported devices. */
  39 #define S2MPS_REGULATOR_MAX             S2MPS13_REGULATOR_MAX
  40 struct s2mps11_info {
  41         int ramp_delay2;
  42         int ramp_delay34;
  43         int ramp_delay5;
  44         int ramp_delay16;
  45         int ramp_delay7810;
  46         int ramp_delay9;
  47
  48         enum sec_device_type dev_type;
  49
  50         /*
  51          * One bit for each S2MPS13/S2MPS14/S2MPU02 regulator whether
  52          * the suspend mode was enabled.
  53          */
  54         DECLARE_BITMAP(suspend_state, S2MPS_REGULATOR_MAX);
  55
  56         /*
  57          * Array (size: number of regulators) with GPIO-s for external
  58          * sleep control.
  59          */
  60         int *ext_control_gpio;
  61 };
  62
  63 static int get_ramp_delay(int ramp_delay)
  64 {
  65         unsigned char cnt = 0;
  66
  67         ramp_delay /= 6250;
  68
  69         while (true) {
  70                 ramp_delay = ramp_delay >> 1;
  71                 if (ramp_delay == 0)
  72                         break;
  73                 cnt++;
  74         }
  75
  76         if (cnt > 3)
  77                 cnt = 3;
  78
  79         return cnt;
  80 }
  81
  82 static int s2mps11_regulator_set_voltage_time_sel(struct regulator_dev *rdev,
  83                                    unsigned int old_selector,
  84                                    unsigned int new_selector)
  85 {
  86         struct s2mps11_info *s2mps11 = rdev_get_drvdata(rdev);
  87         unsigned int ramp_delay = 0;
  88         int old_volt, new_volt;
  89
  90         switch (rdev_get_id(rdev)) {
  91         case S2MPS11_BUCK2:
  92                 ramp_delay = s2mps11->ramp_delay2;
  93                 break;
  94         case S2MPS11_BUCK3:
  95         case S2MPS11_BUCK4:
  96                 ramp_delay = s2mps11->ramp_delay34;
  97                 break;
  98         case S2MPS11_BUCK5:
  99                 ramp_delay = s2mps11->ramp_delay5;
 100                 break;
 101         case S2MPS11_BUCK6:
 102         case S2MPS11_BUCK1:
 103                 ramp_delay = s2mps11->ramp_delay16;
 104                 break;
 105         case S2MPS11_BUCK7:
 106         case S2MPS11_BUCK8:
 107         case S2MPS11_BUCK10:
 108                 ramp_delay = s2mps11->ramp_delay7810;
 109                 break;
 110         case S2MPS11_BUCK9:
 111                 ramp_delay = s2mps11->ramp_delay9;
 112         }
 113
 114         if (ramp_delay == 0)
 115                 ramp_delay = rdev->desc->ramp_delay;
 116
 117         old_volt = rdev->desc->min_uV + (rdev->desc->uV_step * old_selector);
 118         new_volt = rdev->desc->min_uV + (rdev->desc->uV_step * new_selector);
 119
 120         return DIV_ROUND_UP(abs(new_volt - old_volt), ramp_delay);
 121 }
 122
 123 static int s2mps11_set_ramp_delay(struct regulator_dev *rdev, int ramp_delay)
 124 {
 125         struct s2mps11_info *s2mps11 = rdev_get_drvdata(rdev);
 126         unsigned int ramp_val, ramp_shift, ramp_reg = S2MPS11_REG_RAMP_BUCK;
 127         unsigned int ramp_enable = 1, enable_shift = 0;
 128         int ret;
 129
 130         switch (rdev_get_id(rdev)) {
 131         case S2MPS11_BUCK1:
 132                 if (ramp_delay > s2mps11->ramp_delay16)
 133                         s2mps11->ramp_delay16 = ramp_delay;
 134                 else
 135                         ramp_delay = s2mps11->ramp_delay16;
 136
 137                 ramp_shift = S2MPS11_BUCK16_RAMP_SHIFT;
 138                 break;
 139         case S2MPS11_BUCK2:
 140                 enable_shift = S2MPS11_BUCK2_RAMP_EN_SHIFT;
 141                 if (!ramp_delay) {
 142                         ramp_enable = 0;
 143                         break;
 144                 }
 145
 146                 s2mps11->ramp_delay2 = ramp_delay;
 147                 ramp_shift = S2MPS11_BUCK2_RAMP_SHIFT;
 148                 ramp_reg = S2MPS11_REG_RAMP;
 149                 break;
 150         case S2MPS11_BUCK3:
 151                 enable_shift = S2MPS11_BUCK3_RAMP_EN_SHIFT;
 152                 if (!ramp_delay) {
 153                         ramp_enable = 0;
 154                         break;
 155                 }
 156
 157                 if (ramp_delay > s2mps11->ramp_delay34)
 158                         s2mps11->ramp_delay34 = ramp_delay;
 159                 else
 160                         ramp_delay = s2mps11->ramp_delay34;
 161
 162                 ramp_shift = S2MPS11_BUCK34_RAMP_SHIFT;
 163                 ramp_reg = S2MPS11_REG_RAMP;
 164                 break;
 165         case S2MPS11_BUCK4:
 166                 enable_shift = S2MPS11_BUCK4_RAMP_EN_SHIFT;
 167                 if (!ramp_delay) {
 168                         ramp_enable = 0;
 169                         break;
 170                 }
 171
 172                 if (ramp_delay > s2mps11->ramp_delay34)
 173                         s2mps11->ramp_delay34 = ramp_delay;
 174                 else
 175                         ramp_delay = s2mps11->ramp_delay34;
 176
 177                 ramp_shift = S2MPS11_BUCK34_RAMP_SHIFT;
 178                 ramp_reg = S2MPS11_REG_RAMP;
 179                 break;
 180         case S2MPS11_BUCK5:
 181                 s2mps11->ramp_delay5 = ramp_delay;
 182                 ramp_shift = S2MPS11_BUCK5_RAMP_SHIFT;
 183                 break;
 184         case S2MPS11_BUCK6:
 185                 enable_shift = S2MPS11_BUCK6_RAMP_EN_SHIFT;
 186                 if (!ramp_delay) {
 187                         ramp_enable = 0;
 188                         break;
 189                 }
 190
 191                 if (ramp_delay > s2mps11->ramp_delay16)
 192                         s2mps11->ramp_delay16 = ramp_delay;
 193                 else
 194                         ramp_delay = s2mps11->ramp_delay16;
 195
 196                 ramp_shift = S2MPS11_BUCK16_RAMP_SHIFT;
 197                 break;
 198         case S2MPS11_BUCK7:
 199         case S2MPS11_BUCK8:
 200         case S2MPS11_BUCK10:
 201                 if (ramp_delay > s2mps11->ramp_delay7810)
 202                         s2mps11->ramp_delay7810 = ramp_delay;
 203                 else
 204                         ramp_delay = s2mps11->ramp_delay7810;
 205
 206                 ramp_shift = S2MPS11_BUCK7810_RAMP_SHIFT;
 207                 break;
 208         case S2MPS11_BUCK9:
 209                 s2mps11->ramp_delay9 = ramp_delay;
 210                 ramp_shift = S2MPS11_BUCK9_RAMP_SHIFT;
 211                 break;
 212         default:
 213                 return 0;
 214         }
 215
 216         if (!ramp_enable)
 217                 goto ramp_disable;
 218
 219         /* Ramp delay can be enabled/disabled only for buck[2346] */
 220         if ((rdev_get_id(rdev) >= S2MPS11_BUCK2 &&
 221                         rdev_get_id(rdev) <= S2MPS11_BUCK4) ||
 222                         rdev_get_id(rdev) == S2MPS11_BUCK6)  {
 223                 ret = regmap_update_bits(rdev->regmap, S2MPS11_REG_RAMP,
 224                                          1 << enable_shift, 1 << enable_shift);
 225                 if (ret) {
 226                         dev_err(&rdev->dev, "failed to enable ramp rate\n");
 227                         return ret;
 228                 }
 229         }
 230
 231         ramp_val = get_ramp_delay(ramp_delay);
 232
 233         return regmap_update_bits(rdev->regmap, ramp_reg, 0x3 << ramp_shift,
 234                                   ramp_val << ramp_shift);
 235
 236 ramp_disable:
 237         return regmap_update_bits(rdev->regmap, S2MPS11_REG_RAMP,
 238                                   1 << enable_shift, 0);
 239 }
 240
 241 static struct regulator_ops s2mps11_ldo_ops = {
 242         .list_voltage           = regulator_list_voltage_linear,
 243         .map_voltage            = regulator_map_voltage_linear,
 244         .is_enabled             = regulator_is_enabled_regmap,
 245         .enable                 = regulator_enable_regmap,
 246         .disable                = regulator_disable_regmap,
 247         .get_voltage_sel        = regulator_get_voltage_sel_regmap,
 248         .set_voltage_sel        = regulator_set_voltage_sel_regmap,
 249         .set_voltage_time_sel   = regulator_set_voltage_time_sel,
 250 };
 251
 252 static struct regulator_ops s2mps11_buck_ops = {
 253         .list_voltage           = regulator_list_voltage_linear,
 254         .map_voltage            = regulator_map_voltage_linear,
 255         .is_enabled             = regulator_is_enabled_regmap,
 256         .enable                 = regulator_enable_regmap,
 257         .disable                = regulator_disable_regmap,
 258         .get_voltage_sel        = regulator_get_voltage_sel_regmap,
 259         .set_voltage_sel        = regulator_set_voltage_sel_regmap,
 260         .set_voltage_time_sel   = s2mps11_regulator_set_voltage_time_sel,
 261         .set_ramp_delay         = s2mps11_set_ramp_delay,
 262 };
 263
 264 #define regulator_desc_s2mps11_ldo(num, step) {         \
 265         .name           = "LDO"#num,                    \
 266         .id             = S2MPS11_LDO##num,             \
 267         .ops            = &s2mps11_ldo_ops,             \
 268         .type           = REGULATOR_VOLTAGE,            \
 269         .owner          = THIS_MODULE,                  \
 270         .ramp_delay     = RAMP_DELAY_12_MVUS,           \
 271         .min_uV         = MIN_800_MV,                   \
 272         .uV_step        = step,                         \
 273         .n_voltages     = S2MPS11_LDO_N_VOLTAGES,       \
 274         .vsel_reg       = S2MPS11_REG_L1CTRL + num - 1, \
 275         .vsel_mask      = S2MPS11_LDO_VSEL_MASK,        \
 276         .enable_reg     = S2MPS11_REG_L1CTRL + num - 1, \
 277         .enable_mask    = S2MPS11_ENABLE_MASK           \
 278 }
 279
 280 #define regulator_desc_s2mps11_buck1_4(num) {                   \
 281         .name           = "BUCK"#num,                           \
 282         .id             = S2MPS11_BUCK##num,                    \
 283         .ops            = &s2mps11_buck_ops,                    \
 284         .type           = REGULATOR_VOLTAGE,                    \
 285         .owner          = THIS_MODULE,                          \
 286         .min_uV         = MIN_600_MV,                           \
 287         .uV_step        = STEP_6_25_MV,                         \
 288         .n_voltages     = S2MPS11_BUCK_N_VOLTAGES,              \
 289         .ramp_delay     = S2MPS11_RAMP_DELAY,                   \
 290         .vsel_reg       = S2MPS11_REG_B1CTRL2 + (num - 1) * 2,  \
 291         .vsel_mask      = S2MPS11_BUCK_VSEL_MASK,               \
 292         .enable_reg     = S2MPS11_REG_B1CTRL1 + (num - 1) * 2,  \
 293         .enable_mask    = S2MPS11_ENABLE_MASK                   \
 294 }
 295
 296 #define regulator_desc_s2mps11_buck5 {                          \
 297         .name           = "BUCK5",                              \
 298         .id             = S2MPS11_BUCK5,                        \
 299         .ops            = &s2mps11_buck_ops,                    \
 300         .type           = REGULATOR_VOLTAGE,                    \
 301         .owner          = THIS_MODULE,                          \
 302         .min_uV         = MIN_600_MV,                           \
 303         .uV_step        = STEP_6_25_MV,                         \
 304         .n_voltages     = S2MPS11_BUCK_N_VOLTAGES,              \
 305         .ramp_delay     = S2MPS11_RAMP_DELAY,                   \
 306         .vsel_reg       = S2MPS11_REG_B5CTRL2,                  \
 307         .vsel_mask      = S2MPS11_BUCK_VSEL_MASK,               \
 308         .enable_reg     = S2MPS11_REG_B5CTRL1,                  \
 309         .enable_mask    = S2MPS11_ENABLE_MASK                   \
 310 }
 311
 312 #define regulator_desc_s2mps11_buck67810(num, min, step) {      \
 313         .name           = "BUCK"#num,                           \
 314         .id             = S2MPS11_BUCK##num,                    \
 315         .ops            = &s2mps11_buck_ops,                    \
 316         .type           = REGULATOR_VOLTAGE,                    \
 317         .owner          = THIS_MODULE,                          \
 318         .min_uV         = min,                                  \
 319         .uV_step        = step,                                 \
 320         .n_voltages     = S2MPS11_BUCK_N_VOLTAGES,              \
 321         .ramp_delay     = S2MPS11_RAMP_DELAY,                   \
 322         .vsel_reg       = S2MPS11_REG_B6CTRL2 + (num - 6) * 2,  \
 323         .vsel_mask      = S2MPS11_BUCK_VSEL_MASK,               \
 324         .enable_reg     = S2MPS11_REG_B6CTRL1 + (num - 6) * 2,  \
 325         .enable_mask    = S2MPS11_ENABLE_MASK                   \
 326 }
 327
 328 #define regulator_desc_s2mps11_buck9 {                          \
 329         .name           = "BUCK9",                              \
 330         .id             = S2MPS11_BUCK9,                        \
 331         .ops            = &s2mps11_buck_ops,                    \
 332         .type           = REGULATOR_VOLTAGE,                    \
 333         .owner          = THIS_MODULE,                          \
 334         .min_uV         = MIN_3000_MV,                          \
 335         .uV_step        = STEP_25_MV,                           \
 336         .n_voltages     = S2MPS11_BUCK9_N_VOLTAGES,             \
 337         .ramp_delay     = S2MPS11_RAMP_DELAY,                   \
 338         .vsel_reg       = S2MPS11_REG_B9CTRL2,                  \
 339         .vsel_mask      = S2MPS11_BUCK9_VSEL_MASK,              \
 340         .enable_reg     = S2MPS11_REG_B9CTRL1,                  \
 341         .enable_mask    = S2MPS11_ENABLE_MASK                   \
 342 }
 343
 344 static const struct regulator_desc s2mps11_regulators[] = {
 345         regulator_desc_s2mps11_ldo(1, STEP_25_MV),
 346         regulator_desc_s2mps11_ldo(2, STEP_50_MV),
 347         regulator_desc_s2mps11_ldo(3, STEP_50_MV),
 348         regulator_desc_s2mps11_ldo(4, STEP_50_MV),
 349         regulator_desc_s2mps11_ldo(5, STEP_50_MV),
 350         regulator_desc_s2mps11_ldo(6, STEP_25_MV),
 351         regulator_desc_s2mps11_ldo(7, STEP_50_MV),
 352         regulator_desc_s2mps11_ldo(8, STEP_50_MV),
 353         regulator_desc_s2mps11_ldo(9, STEP_50_MV),
 354         regulator_desc_s2mps11_ldo(10, STEP_50_MV),
 355         regulator_desc_s2mps11_ldo(11, STEP_25_MV),
 356         regulator_desc_s2mps11_ldo(12, STEP_50_MV),
 357         regulator_desc_s2mps11_ldo(13, STEP_50_MV),
 358         regulator_desc_s2mps11_ldo(14, STEP_50_MV),
 359         regulator_desc_s2mps11_ldo(15, STEP_50_MV),
 360         regulator_desc_s2mps11_ldo(16, STEP_50_MV),
 361         regulator_desc_s2mps11_ldo(17, STEP_50_MV),
 362         regulator_desc_s2mps11_ldo(18, STEP_50_MV),
 363         regulator_desc_s2mps11_ldo(19, STEP_50_MV),
 364         regulator_desc_s2mps11_ldo(20, STEP_50_MV),
 365         regulator_desc_s2mps11_ldo(21, STEP_50_MV),
 366         regulator_desc_s2mps11_ldo(22, STEP_25_MV),
 367         regulator_desc_s2mps11_ldo(23, STEP_25_MV),
 368         regulator_desc_s2mps11_ldo(24, STEP_50_MV),
 369         regulator_desc_s2mps11_ldo(25, STEP_50_MV),
 370         regulator_desc_s2mps11_ldo(26, STEP_50_MV),
 371         regulator_desc_s2mps11_ldo(27, STEP_25_MV),
 372         regulator_desc_s2mps11_ldo(28, STEP_50_MV),
 373         regulator_desc_s2mps11_ldo(29, STEP_50_MV),
 374         regulator_desc_s2mps11_ldo(30, STEP_50_MV),
 375         regulator_desc_s2mps11_ldo(31, STEP_50_MV),
 376         regulator_desc_s2mps11_ldo(32, STEP_50_MV),
 377         regulator_desc_s2mps11_ldo(33, STEP_50_MV),
 378         regulator_desc_s2mps11_ldo(34, STEP_50_MV),
 379         regulator_desc_s2mps11_ldo(35, STEP_50_MV),
 380         regulator_desc_s2mps11_ldo(36, STEP_50_MV),
 381         regulator_desc_s2mps11_ldo(37, STEP_50_MV),
 382         regulator_desc_s2mps11_ldo(38, STEP_50_MV),
 383         regulator_desc_s2mps11_buck1_4(1),
 384         regulator_desc_s2mps11_buck1_4(2),
 385         regulator_desc_s2mps11_buck1_4(3),
 386         regulator_desc_s2mps11_buck1_4(4),
 387         regulator_desc_s2mps11_buck5,
 388         regulator_desc_s2mps11_buck67810(6, MIN_600_MV, STEP_6_25_MV),
 389         regulator_desc_s2mps11_buck67810(7, MIN_600_MV, STEP_6_25_MV),
 390         regulator_desc_s2mps11_buck67810(8, MIN_600_MV, STEP_6_25_MV),
 391         regulator_desc_s2mps11_buck9,
 392         regulator_desc_s2mps11_buck67810(10, MIN_750_MV, STEP_12_5_MV),
 393 };
 394
 395 static struct regulator_ops s2mps14_reg_ops;
 396
 397 #define regulator_desc_s2mps13_ldo(num, min, step, min_sel) {   \
 398         .name           = "LDO"#num,                            \
 399         .id             = S2MPS13_LDO##num,                     \
 400         .ops            = &s2mps14_reg_ops,                     \
 401         .type           = REGULATOR_VOLTAGE,                    \
 402         .owner          = THIS_MODULE,                          \
 403         .min_uV         = min,                                  \
 404         .uV_step        = step,                                 \
 405         .linear_min_sel = min_sel,                              \
 406         .n_voltages     = S2MPS14_LDO_N_VOLTAGES,               \
 407         .vsel_reg       = S2MPS13_REG_L1CTRL + num - 1,         \
 408         .vsel_mask      = S2MPS14_LDO_VSEL_MASK,                \
 409         .enable_reg     = S2MPS13_REG_L1CTRL + num - 1,         \
 410         .enable_mask    = S2MPS14_ENABLE_MASK                   \
 411 }
 412
 413 #define regulator_desc_s2mps13_buck(num, min, step, min_sel) {  \
 414         .name           = "BUCK"#num,                           \
 415         .id             = S2MPS13_BUCK##num,                    \
 416         .ops            = &s2mps14_reg_ops,                     \
 417         .type           = REGULATOR_VOLTAGE,                    \
 418         .owner          = THIS_MODULE,                          \
 419         .min_uV         = min,                                  \
 420         .uV_step        = step,                                 \
 421         .linear_min_sel = min_sel,                              \
 422         .n_voltages     = S2MPS14_BUCK_N_VOLTAGES,              \
 423         .ramp_delay     = S2MPS13_BUCK_RAMP_DELAY,              \
 424         .vsel_reg       = S2MPS13_REG_B1OUT + (num - 1) * 2,    \
 425         .vsel_mask      = S2MPS14_BUCK_VSEL_MASK,               \
 426         .enable_reg     = S2MPS13_REG_B1CTRL + (num - 1) * 2,   \
 427         .enable_mask    = S2MPS14_ENABLE_MASK                   \
 428 }
 429
 430 #define regulator_desc_s2mps13_buck7(num, min, step, min_sel) { \
 431         .name           = "BUCK"#num,                           \
 432         .id             = S2MPS13_BUCK##num,                    \
 433         .ops            = &s2mps14_reg_ops,                     \
 434         .type           = REGULATOR_VOLTAGE,                    \
 435         .owner          = THIS_MODULE,                          \
 436         .min_uV         = min,                                  \
 437         .uV_step        = step,                                 \
 438         .linear_min_sel = min_sel,                              \
 439         .n_voltages     = S2MPS14_BUCK_N_VOLTAGES,              \
 440         .ramp_delay     = S2MPS13_BUCK_RAMP_DELAY,              \
 441         .vsel_reg       = S2MPS13_REG_B1OUT + (num) * 2 - 1,    \
 442         .vsel_mask      = S2MPS14_BUCK_VSEL_MASK,               \
 443         .enable_reg     = S2MPS13_REG_B1CTRL + (num - 1) * 2,   \
 444         .enable_mask    = S2MPS14_ENABLE_MASK                   \
 445 }
 446
 447 #define regulator_desc_s2mps13_buck8_10(num, min, step, min_sel) {      \
 448         .name           = "BUCK"#num,                           \
 449         .id             = S2MPS13_BUCK##num,                    \
 450         .ops            = &s2mps14_reg_ops,                     \
 451         .type           = REGULATOR_VOLTAGE,                    \
 452         .owner          = THIS_MODULE,                          \
 453         .min_uV         = min,                                  \
 454         .uV_step        = step,                                 \
 455         .linear_min_sel = min_sel,                              \
 456         .n_voltages     = S2MPS14_BUCK_N_VOLTAGES,              \
 457         .ramp_delay     = S2MPS13_BUCK_RAMP_DELAY,              \
 458         .vsel_reg       = S2MPS13_REG_B1OUT + (num) * 2 - 1,    \
 459         .vsel_mask      = S2MPS14_BUCK_VSEL_MASK,               \
 460         .enable_reg     = S2MPS13_REG_B1CTRL + (num) * 2 - 1,   \
 461         .enable_mask    = S2MPS14_ENABLE_MASK                   \
 462 }
 463
 464 static const struct regulator_desc s2mps13_regulators[] = {
 465         regulator_desc_s2mps13_ldo(1,  MIN_800_MV,  STEP_12_5_MV, 0x00),
 466         regulator_desc_s2mps13_ldo(2,  MIN_1400_MV, STEP_50_MV,   0x0C),
 467         regulator_desc_s2mps13_ldo(3,  MIN_1000_MV, STEP_25_MV,   0x08),
 468         regulator_desc_s2mps13_ldo(4,  MIN_800_MV,  STEP_12_5_MV, 0x00),
 469         regulator_desc_s2mps13_ldo(5,  MIN_800_MV,  STEP_12_5_MV, 0x00),
 470         regulator_desc_s2mps13_ldo(6,  MIN_800_MV,  STEP_12_5_MV, 0x00),
 471         regulator_desc_s2mps13_ldo(7,  MIN_1000_MV, STEP_25_MV,   0x08),
 472         regulator_desc_s2mps13_ldo(8,  MIN_1000_MV, STEP_25_MV,   0x08),
 473         regulator_desc_s2mps13_ldo(9,  MIN_1000_MV, STEP_25_MV,   0x08),
 474         regulator_desc_s2mps13_ldo(10, MIN_1400_MV, STEP_50_MV,   0x0C),
 475         regulator_desc_s2mps13_ldo(11, MIN_800_MV,  STEP_25_MV,   0x10),
 476         regulator_desc_s2mps13_ldo(12, MIN_800_MV,  STEP_25_MV,   0x10),
 477         regulator_desc_s2mps13_ldo(13, MIN_800_MV,  STEP_25_MV,   0x10),
 478         regulator_desc_s2mps13_ldo(14, MIN_800_MV,  STEP_12_5_MV, 0x00),
 479         regulator_desc_s2mps13_ldo(15, MIN_800_MV,  STEP_12_5_MV, 0x00),
 480         regulator_desc_s2mps13_ldo(16, MIN_1400_MV, STEP_50_MV,   0x0C),
 481         regulator_desc_s2mps13_ldo(17, MIN_1400_MV, STEP_50_MV,   0x0C),
 482         regulator_desc_s2mps13_ldo(18, MIN_1000_MV, STEP_25_MV,   0x08),
 483         regulator_desc_s2mps13_ldo(19, MIN_1000_MV, STEP_25_MV,   0x08),
 484         regulator_desc_s2mps13_ldo(20, MIN_1400_MV, STEP_50_MV,   0x0C),
 485         regulator_desc_s2mps13_ldo(21, MIN_1000_MV, STEP_25_MV,   0x08),
 486         regulator_desc_s2mps13_ldo(22, MIN_1000_MV, STEP_25_MV,   0x08),
 487         regulator_desc_s2mps13_ldo(23, MIN_800_MV,  STEP_12_5_MV, 0x00),
 488         regulator_desc_s2mps13_ldo(24, MIN_800_MV,  STEP_12_5_MV, 0x00),
 489         regulator_desc_s2mps13_ldo(25, MIN_1400_MV, STEP_50_MV,   0x0C),
 490         regulator_desc_s2mps13_ldo(26, MIN_1400_MV, STEP_50_MV,   0x0C),
 491         regulator_desc_s2mps13_ldo(27, MIN_1400_MV, STEP_50_MV,   0x0C),
 492         regulator_desc_s2mps13_ldo(28, MIN_1000_MV, STEP_25_MV,   0x08),
 493         regulator_desc_s2mps13_ldo(29, MIN_1400_MV, STEP_50_MV,   0x0C),
 494         regulator_desc_s2mps13_ldo(30, MIN_1400_MV, STEP_50_MV,   0x0C),
 495         regulator_desc_s2mps13_ldo(31, MIN_1000_MV, STEP_25_MV,   0x08),
 496         regulator_desc_s2mps13_ldo(32, MIN_1000_MV, STEP_25_MV,   0x08),
 497         regulator_desc_s2mps13_ldo(33, MIN_1400_MV, STEP_50_MV,   0x0C),
 498         regulator_desc_s2mps13_ldo(34, MIN_1000_MV, STEP_25_MV,   0x08),
 499         regulator_desc_s2mps13_ldo(35, MIN_1400_MV, STEP_50_MV,   0x0C),
 500         regulator_desc_s2mps13_ldo(36, MIN_800_MV,  STEP_12_5_MV, 0x00),
 501         regulator_desc_s2mps13_ldo(37, MIN_1000_MV, STEP_25_MV,   0x08),
 502         regulator_desc_s2mps13_ldo(38, MIN_1400_MV, STEP_50_MV,   0x0C),
 503         regulator_desc_s2mps13_ldo(39, MIN_1000_MV, STEP_25_MV,   0x08),
 504         regulator_desc_s2mps13_ldo(40, MIN_1400_MV, STEP_50_MV,   0x0C),
 505         regulator_desc_s2mps13_buck(1,  MIN_500_MV,  STEP_6_25_MV, 0x10),
 506         regulator_desc_s2mps13_buck(2,  MIN_500_MV,  STEP_6_25_MV, 0x10),
 507         regulator_desc_s2mps13_buck(3,  MIN_500_MV,  STEP_6_25_MV, 0x10),
 508         regulator_desc_s2mps13_buck(4,  MIN_500_MV,  STEP_6_25_MV, 0x10),
 509         regulator_desc_s2mps13_buck(5,  MIN_500_MV,  STEP_6_25_MV, 0x10),
 510         regulator_desc_s2mps13_buck(6,  MIN_500_MV,  STEP_6_25_MV, 0x10),
 511         regulator_desc_s2mps13_buck7(7,  MIN_500_MV,  STEP_6_25_MV, 0x10),
 512         regulator_desc_s2mps13_buck8_10(8,  MIN_1000_MV, STEP_12_5_MV, 0x20),
 513         regulator_desc_s2mps13_buck8_10(9,  MIN_1000_MV, STEP_12_5_MV, 0x20),
 514         regulator_desc_s2mps13_buck8_10(10, MIN_500_MV,  STEP_6_25_MV, 0x10),
 515 };
 516
 517 static int s2mps14_regulator_enable(struct regulator_dev *rdev)
 518 {
 519         struct s2mps11_info *s2mps11 = rdev_get_drvdata(rdev);
 520         unsigned int val;
 521
 522         switch (s2mps11->dev_type) {
 523         case S2MPS13X:
 524         case S2MPS14X:
 525                 if (test_bit(rdev_get_id(rdev), s2mps11->suspend_state))
 526                         val = S2MPS14_ENABLE_SUSPEND;
 527                 else if (gpio_is_valid(s2mps11->ext_control_gpio[rdev_get_id(rdev)]))
 528                         val = S2MPS14_ENABLE_EXT_CONTROL;
 529                 else
 530                         val = rdev->desc->enable_mask;
 531                 break;
 532         case S2MPU02:
 533                 if (test_bit(rdev_get_id(rdev), s2mps11->suspend_state))
 534                         val = S2MPU02_ENABLE_SUSPEND;
 535                 else
 536                         val = rdev->desc->enable_mask;
 537                 break;
 538         default:
 539                 return -EINVAL;
 540         }
 541
 542         return regmap_update_bits(rdev->regmap, rdev->desc->enable_reg,
 543                         rdev->desc->enable_mask, val);
 544 }
 545
 546 static int s2mps14_regulator_set_suspend_disable(struct regulator_dev *rdev)
 547 {
 548         int ret;
 549         unsigned int val, state;
 550         struct s2mps11_info *s2mps11 = rdev_get_drvdata(rdev);
 551         int rdev_id = rdev_get_id(rdev);
 552
 553         /* Below LDO should be always on or does not support suspend mode. */
 554         switch (s2mps11->dev_type) {
 555         case S2MPS13X:
 556         case S2MPS14X:
 557                 switch (rdev_id) {
 558                 case S2MPS14_LDO3:
 559                         return 0;
 560                 default:
 561                         state = S2MPS14_ENABLE_SUSPEND;
 562                         break;
 563                 }
 564                 break;
 565         case S2MPU02:
 566                 switch (rdev_id) {
 567                 case S2MPU02_LDO13:
 568                 case S2MPU02_LDO14:
 569                 case S2MPU02_LDO15:
 570                 case S2MPU02_LDO17:
 571                 case S2MPU02_BUCK7:
 572                         state = S2MPU02_DISABLE_SUSPEND;
 573                         break;
 574                 default:
 575                         state = S2MPU02_ENABLE_SUSPEND;
 576                         break;
 577                 }
 578                 break;
 579         default:
 580                 return -EINVAL;
 581         }
 582
 583         ret = regmap_read(rdev->regmap, rdev->desc->enable_reg, &val);
 584         if (ret < 0)
 585                 return ret;
 586
 587         set_bit(rdev_get_id(rdev), s2mps11->suspend_state);
 588         /*
 589          * Don't enable suspend mode if regulator is already disabled because
 590          * this would effectively for a short time turn on the regulator after
 591          * resuming.
 592          * However we still want to toggle the suspend_state bit for regulator
 593          * in case if it got enabled before suspending the system.
 594          */
 595         if (!(val & rdev->desc->enable_mask))
 596                 return 0;
 597
 598         return regmap_update_bits(rdev->regmap, rdev->desc->enable_reg,
 599                         rdev->desc->enable_mask, state);
 600 }
 601
 602 static struct regulator_ops s2mps14_reg_ops = {
 603         .list_voltage           = regulator_list_voltage_linear,
 604         .map_voltage            = regulator_map_voltage_linear,
 605         .is_enabled             = regulator_is_enabled_regmap,
 606         .enable                 = s2mps14_regulator_enable,
 607         .disable                = regulator_disable_regmap,
 608         .get_voltage_sel        = regulator_get_voltage_sel_regmap,
 609         .set_voltage_sel        = regulator_set_voltage_sel_regmap,
 610         .set_voltage_time_sel   = regulator_set_voltage_time_sel,
 611         .set_suspend_disable    = s2mps14_regulator_set_suspend_disable,
 612 };
 613
 614 #define regulator_desc_s2mps14_ldo(num, min, step) {    \
 615         .name           = "LDO"#num,                    \
 616         .id             = S2MPS14_LDO##num,             \
 617         .ops            = &s2mps14_reg_ops,             \
 618         .type           = REGULATOR_VOLTAGE,            \
 619         .owner          = THIS_MODULE,                  \
 620         .min_uV         = min,                          \
 621         .uV_step        = step,                         \
 622         .n_voltages     = S2MPS14_LDO_N_VOLTAGES,       \
 623         .vsel_reg       = S2MPS14_REG_L1CTRL + num - 1, \
 624         .vsel_mask      = S2MPS14_LDO_VSEL_MASK,        \
 625         .enable_reg     = S2MPS14_REG_L1CTRL + num - 1, \
 626         .enable_mask    = S2MPS14_ENABLE_MASK           \
 627 }
 628
 629 #define regulator_desc_s2mps14_buck(num, min, step, min_sel) {  \
 630         .name           = "BUCK"#num,                           \
 631         .id             = S2MPS14_BUCK##num,                    \
 632         .ops            = &s2mps14_reg_ops,                     \
 633         .type           = REGULATOR_VOLTAGE,                    \
 634         .owner          = THIS_MODULE,                          \
 635         .min_uV         = min,                                  \
 636         .uV_step        = step,                                 \
 637         .n_voltages     = S2MPS14_BUCK_N_VOLTAGES,              \
 638         .linear_min_sel = min_sel,                              \
 639         .ramp_delay     = S2MPS14_BUCK_RAMP_DELAY,              \
 640         .vsel_reg       = S2MPS14_REG_B1CTRL2 + (num - 1) * 2,  \
 641         .vsel_mask      = S2MPS14_BUCK_VSEL_MASK,               \
 642         .enable_reg     = S2MPS14_REG_B1CTRL1 + (num - 1) * 2,  \
 643         .enable_mask    = S2MPS14_ENABLE_MASK                   \
 644 }
 645
 646 static const struct regulator_desc s2mps14_regulators[] = {
 647         regulator_desc_s2mps14_ldo(1, MIN_800_MV, STEP_12_5_MV),
 648         regulator_desc_s2mps14_ldo(2, MIN_800_MV, STEP_12_5_MV),
 649         regulator_desc_s2mps14_ldo(3, MIN_800_MV, STEP_25_MV),
 650         regulator_desc_s2mps14_ldo(4, MIN_800_MV, STEP_25_MV),
 651         regulator_desc_s2mps14_ldo(5, MIN_800_MV, STEP_12_5_MV),
 652         regulator_desc_s2mps14_ldo(6, MIN_800_MV, STEP_12_5_MV),
 653         regulator_desc_s2mps14_ldo(7, MIN_800_MV, STEP_25_MV),
 654         regulator_desc_s2mps14_ldo(8, MIN_1800_MV, STEP_25_MV),
 655         regulator_desc_s2mps14_ldo(9, MIN_800_MV, STEP_12_5_MV),
 656         regulator_desc_s2mps14_ldo(10, MIN_800_MV, STEP_12_5_MV),
 657         regulator_desc_s2mps14_ldo(11, MIN_800_MV, STEP_25_MV),
 658         regulator_desc_s2mps14_ldo(12, MIN_1800_MV, STEP_25_MV),
 659         regulator_desc_s2mps14_ldo(13, MIN_1800_MV, STEP_25_MV),
 660         regulator_desc_s2mps14_ldo(14, MIN_1800_MV, STEP_25_MV),
 661         regulator_desc_s2mps14_ldo(15, MIN_1800_MV, STEP_25_MV),
 662         regulator_desc_s2mps14_ldo(16, MIN_1800_MV, STEP_25_MV),
 663         regulator_desc_s2mps14_ldo(17, MIN_1800_MV, STEP_25_MV),
 664         regulator_desc_s2mps14_ldo(18, MIN_1800_MV, STEP_25_MV),
 665         regulator_desc_s2mps14_ldo(19, MIN_800_MV, STEP_25_MV),
 666         regulator_desc_s2mps14_ldo(20, MIN_800_MV, STEP_25_MV),
 667         regulator_desc_s2mps14_ldo(21, MIN_800_MV, STEP_25_MV),
 668         regulator_desc_s2mps14_ldo(22, MIN_800_MV, STEP_12_5_MV),
 669         regulator_desc_s2mps14_ldo(23, MIN_800_MV, STEP_25_MV),
 670         regulator_desc_s2mps14_ldo(24, MIN_1800_MV, STEP_25_MV),
 671         regulator_desc_s2mps14_ldo(25, MIN_1800_MV, STEP_25_MV),
 672         regulator_desc_s2mps14_buck(1, MIN_600_MV, STEP_6_25_MV,
 673                                     S2MPS14_BUCK1235_START_SEL),
 674         regulator_desc_s2mps14_buck(2, MIN_600_MV, STEP_6_25_MV,
 675                                     S2MPS14_BUCK1235_START_SEL),
 676         regulator_desc_s2mps14_buck(3, MIN_600_MV, STEP_6_25_MV,
 677                                     S2MPS14_BUCK1235_START_SEL),
 678         regulator_desc_s2mps14_buck(4, MIN_1400_MV, STEP_12_5_MV,
 679                                     S2MPS14_BUCK4_START_SEL),
 680         regulator_desc_s2mps14_buck(5, MIN_600_MV, STEP_6_25_MV,
 681                                     S2MPS14_BUCK1235_START_SEL),
 682 };
 683
 684 static struct regulator_ops s2mps15_reg_ldo_ops = {
 685         .list_voltage           = regulator_list_voltage_linear_range,
 686         .map_voltage            = regulator_map_voltage_linear_range,
 687         .is_enabled             = regulator_is_enabled_regmap,
 688         .enable                 = regulator_enable_regmap,
 689         .disable                = regulator_disable_regmap,
 690         .get_voltage_sel        = regulator_get_voltage_sel_regmap,
 691         .set_voltage_sel        = regulator_set_voltage_sel_regmap,
 692 };
 693
 694 static struct regulator_ops s2mps15_reg_buck_ops = {
 695         .list_voltage           = regulator_list_voltage_linear_range,
 696         .map_voltage            = regulator_map_voltage_linear_range,
 697         .is_enabled             = regulator_is_enabled_regmap,
 698         .enable                 = regulator_enable_regmap,
 699         .disable                = regulator_disable_regmap,
 700         .get_voltage_sel        = regulator_get_voltage_sel_regmap,
 701         .set_voltage_sel        = regulator_set_voltage_sel_regmap,
 702         .set_voltage_time_sel   = regulator_set_voltage_time_sel,
 703 };
 704
 705 #define regulator_desc_s2mps15_ldo(num, range) {        \
 706         .name           = "LDO"#num,                    \
 707         .id             = S2MPS15_LDO##num,             \
 708         .ops            = &s2mps15_reg_ldo_ops,         \
 709         .type           = REGULATOR_VOLTAGE,            \
 710         .owner          = THIS_MODULE,                  \
 711         .linear_ranges  = range,                        \
 712         .n_linear_ranges = ARRAY_SIZE(range),           \
 713         .n_voltages     = S2MPS15_LDO_N_VOLTAGES,       \
 714         .vsel_reg       = S2MPS15_REG_L1CTRL + num - 1, \
 715         .vsel_mask      = S2MPS15_LDO_VSEL_MASK,        \
 716         .enable_reg     = S2MPS15_REG_L1CTRL + num - 1, \
 717         .enable_mask    = S2MPS15_ENABLE_MASK           \
 718 }
 719
 720 #define regulator_desc_s2mps15_buck(num, range) {                       \
 721         .name           = "BUCK"#num,                                   \
 722         .id             = S2MPS15_BUCK##num,                            \
 723         .ops            = &s2mps15_reg_buck_ops,                        \
 724         .type           = REGULATOR_VOLTAGE,                            \
 725         .owner          = THIS_MODULE,                                  \
 726         .linear_ranges  = range,                                        \
 727         .n_linear_ranges = ARRAY_SIZE(range),                           \
 728         .ramp_delay     = 12500,                                        \
 729         .n_voltages     = S2MPS15_BUCK_N_VOLTAGES,                      \
 730         .vsel_reg       = S2MPS15_REG_B1CTRL2 + ((num - 1) * 2),        \
 731         .vsel_mask      = S2MPS15_BUCK_VSEL_MASK,                       \
 732         .enable_reg     = S2MPS15_REG_B1CTRL1 + ((num - 1) * 2),        \
 733         .enable_mask    = S2MPS15_ENABLE_MASK                           \
 734 }
 735
 736 /* voltage range for s2mps15 LDO 3, 5, 15, 16, 18, 20, 23 and 27 */
 737 static const struct regulator_linear_range s2mps15_ldo_voltage_ranges1[] = {
 738         REGULATOR_LINEAR_RANGE(1000000, 0xc, 0x38, 25000),
 739 };
 740
 741 /* voltage range for s2mps15 LDO 2, 6, 14, 17, 19, 21, 24 and 25 */
 742 static const struct regulator_linear_range s2mps15_ldo_voltage_ranges2[] = {
 743         REGULATOR_LINEAR_RANGE(1800000, 0x0, 0x3f, 25000),
 744 };
 745
 746 /* voltage range for s2mps15 LDO 4, 11, 12, 13, 22 and 26 */
 747 static const struct regulator_linear_range s2mps15_ldo_voltage_ranges3[] = {
 748         REGULATOR_LINEAR_RANGE(700000, 0x0, 0x34, 12500),
 749 };
 750
 751 /* voltage range for s2mps15 LDO 7, 8, 9 and 10 */
 752 static const struct regulator_linear_range s2mps15_ldo_voltage_ranges4[] = {
 753         REGULATOR_LINEAR_RANGE(700000, 0x10, 0x20, 25000),
 754 };
 755
 756 /* voltage range for s2mps15 LDO 1 */
 757 static const struct regulator_linear_range s2mps15_ldo_voltage_ranges5[] = {
 758         REGULATOR_LINEAR_RANGE(500000, 0x0, 0x20, 12500),
 759 };
 760
 761 /* voltage range for s2mps15 BUCK 1, 2, 3, 4, 5, 6 and 7 */
 762 static const struct regulator_linear_range s2mps15_buck_voltage_ranges1[] = {
 763         REGULATOR_LINEAR_RANGE(500000, 0x20, 0xc0, 6250),
 764 };
 765
 766 /* voltage range for s2mps15 BUCK 8, 9 and 10 */
 767 static const struct regulator_linear_range s2mps15_buck_voltage_ranges2[] = {
 768         REGULATOR_LINEAR_RANGE(1000000, 0x20, 0x78, 12500),
 769 };
 770
 771 static const struct regulator_desc s2mps15_regulators[] = {
 772         regulator_desc_s2mps15_ldo(1, s2mps15_ldo_voltage_ranges5),
 773         regulator_desc_s2mps15_ldo(2, s2mps15_ldo_voltage_ranges2),
 774         regulator_desc_s2mps15_ldo(3, s2mps15_ldo_voltage_ranges1),
 775         regulator_desc_s2mps15_ldo(4, s2mps15_ldo_voltage_ranges3),
 776         regulator_desc_s2mps15_ldo(5, s2mps15_ldo_voltage_ranges1),
 777         regulator_desc_s2mps15_ldo(6, s2mps15_ldo_voltage_ranges2),
 778         regulator_desc_s2mps15_ldo(7, s2mps15_ldo_voltage_ranges4),
 779         regulator_desc_s2mps15_ldo(8, s2mps15_ldo_voltage_ranges4),
 780         regulator_desc_s2mps15_ldo(9, s2mps15_ldo_voltage_ranges4),
 781         regulator_desc_s2mps15_ldo(10, s2mps15_ldo_voltage_ranges4),
 782         regulator_desc_s2mps15_ldo(11, s2mps15_ldo_voltage_ranges3),
 783         regulator_desc_s2mps15_ldo(12, s2mps15_ldo_voltage_ranges3),
 784         regulator_desc_s2mps15_ldo(13, s2mps15_ldo_voltage_ranges3),
 785         regulator_desc_s2mps15_ldo(14, s2mps15_ldo_voltage_ranges2),
 786         regulator_desc_s2mps15_ldo(15, s2mps15_ldo_voltage_ranges1),
 787         regulator_desc_s2mps15_ldo(16, s2mps15_ldo_voltage_ranges1),
 788         regulator_desc_s2mps15_ldo(17, s2mps15_ldo_voltage_ranges2),
 789         regulator_desc_s2mps15_ldo(18, s2mps15_ldo_voltage_ranges1),
 790         regulator_desc_s2mps15_ldo(19, s2mps15_ldo_voltage_ranges2),
 791         regulator_desc_s2mps15_ldo(20, s2mps15_ldo_voltage_ranges1),
 792         regulator_desc_s2mps15_ldo(21, s2mps15_ldo_voltage_ranges2),
 793         regulator_desc_s2mps15_ldo(22, s2mps15_ldo_voltage_ranges3),
 794         regulator_desc_s2mps15_ldo(23, s2mps15_ldo_voltage_ranges1),
 795         regulator_desc_s2mps15_ldo(24, s2mps15_ldo_voltage_ranges2),
 796         regulator_desc_s2mps15_ldo(25, s2mps15_ldo_voltage_ranges2),
 797         regulator_desc_s2mps15_ldo(26, s2mps15_ldo_voltage_ranges3),
 798         regulator_desc_s2mps15_ldo(27, s2mps15_ldo_voltage_ranges1),
 799         regulator_desc_s2mps15_buck(1, s2mps15_buck_voltage_ranges1),
 800         regulator_desc_s2mps15_buck(2, s2mps15_buck_voltage_ranges1),
 801         regulator_desc_s2mps15_buck(3, s2mps15_buck_voltage_ranges1),
 802         regulator_desc_s2mps15_buck(4, s2mps15_buck_voltage_ranges1),
 803         regulator_desc_s2mps15_buck(5, s2mps15_buck_voltage_ranges1),
 804         regulator_desc_s2mps15_buck(6, s2mps15_buck_voltage_ranges1),
 805         regulator_desc_s2mps15_buck(7, s2mps15_buck_voltage_ranges1),
 806         regulator_desc_s2mps15_buck(8, s2mps15_buck_voltage_ranges2),
 807         regulator_desc_s2mps15_buck(9, s2mps15_buck_voltage_ranges2),
 808         regulator_desc_s2mps15_buck(10, s2mps15_buck_voltage_ranges2),
 809 };
 810
 811 static int s2mps14_pmic_enable_ext_control(struct s2mps11_info *s2mps11,
 812                 struct regulator_dev *rdev)
 813 {
 814         return regmap_update_bits(rdev->regmap, rdev->desc->enable_reg,
 815                         rdev->desc->enable_mask, S2MPS14_ENABLE_EXT_CONTROL);
 816 }
 817
 818 static void s2mps14_pmic_dt_parse_ext_control_gpio(struct platform_device *pdev,
 819                 struct of_regulator_match *rdata, struct s2mps11_info *s2mps11)
 820 {
 821         int *gpio = s2mps11->ext_control_gpio;
 822         unsigned int i;
 823         unsigned int valid_regulators[3] = { S2MPS14_LDO10, S2MPS14_LDO11,
 824                 S2MPS14_LDO12 };
 825
 826         for (i = 0; i < ARRAY_SIZE(valid_regulators); i++) {
 827                 unsigned int reg = valid_regulators[i];
 828
 829                 if (!rdata[reg].init_data || !rdata[reg].of_node)
 830                         continue;
 831
 832                 gpio[reg] = of_get_named_gpio(rdata[reg].of_node,
 833                                 "samsung,ext-control-gpios", 0);
 834                 if (gpio_is_valid(gpio[reg]))
 835                         dev_dbg(&pdev->dev, "Using GPIO %d for ext-control over %d/%s\n",
 836                                         gpio[reg], reg, rdata[reg].name);
 837         }
 838 }
 839
 840 static int s2mps11_pmic_dt_parse(struct platform_device *pdev,
 841                 struct of_regulator_match *rdata, struct s2mps11_info *s2mps11,
 842                 unsigned int rdev_num)
 843 {
 844         struct device_node *reg_np;
 845
 846         reg_np = of_get_child_by_name(pdev->dev.parent->of_node, "regulators");
 847         if (!reg_np) {
 848                 dev_err(&pdev->dev, "could not find regulators sub-node\n");
 849                 return -EINVAL;
 850         }
 851
 852         of_regulator_match(&pdev->dev, reg_np, rdata, rdev_num);
 853         if (s2mps11->dev_type == S2MPS14X)
 854                 s2mps14_pmic_dt_parse_ext_control_gpio(pdev, rdata, s2mps11);
 855
 856         of_node_put(reg_np);
 857
 858         return 0;
 859 }
 860
 861 static int s2mpu02_set_ramp_delay(struct regulator_dev *rdev, int ramp_delay)
 862 {
 863         unsigned int ramp_val, ramp_shift, ramp_reg;
 864
 865         switch (rdev_get_id(rdev)) {
 866         case S2MPU02_BUCK1:
 867                 ramp_shift = S2MPU02_BUCK1_RAMP_SHIFT;
 868                 break;
 869         case S2MPU02_BUCK2:
 870                 ramp_shift = S2MPU02_BUCK2_RAMP_SHIFT;
 871                 break;
 872         case S2MPU02_BUCK3:
 873                 ramp_shift = S2MPU02_BUCK3_RAMP_SHIFT;
 874                 break;
 875         case S2MPU02_BUCK4:
 876                 ramp_shift = S2MPU02_BUCK4_RAMP_SHIFT;
 877                 break;
 878         default:
 879                 return 0;
 880         }
 881         ramp_reg = S2MPU02_REG_RAMP1;
 882         ramp_val = get_ramp_delay(ramp_delay);
 883
 884         return regmap_update_bits(rdev->regmap, ramp_reg,
 885                                   S2MPU02_BUCK1234_RAMP_MASK << ramp_shift,
 886                                   ramp_val << ramp_shift);
 887 }
 888
 889 static struct regulator_ops s2mpu02_ldo_ops = {
 890         .list_voltage           = regulator_list_voltage_linear,
 891         .map_voltage            = regulator_map_voltage_linear,
 892         .is_enabled             = regulator_is_enabled_regmap,
 893         .enable                 = s2mps14_regulator_enable,
 894         .disable                = regulator_disable_regmap,
 895         .get_voltage_sel        = regulator_get_voltage_sel_regmap,
 896         .set_voltage_sel        = regulator_set_voltage_sel_regmap,
 897         .set_voltage_time_sel   = regulator_set_voltage_time_sel,
 898         .set_suspend_disable    = s2mps14_regulator_set_suspend_disable,
 899 };
 900
 901 static struct regulator_ops s2mpu02_buck_ops = {
 902         .list_voltage           = regulator_list_voltage_linear,
 903         .map_voltage            = regulator_map_voltage_linear,
 904         .is_enabled             = regulator_is_enabled_regmap,
 905         .enable                 = s2mps14_regulator_enable,
 906         .disable                = regulator_disable_regmap,
 907         .get_voltage_sel        = regulator_get_voltage_sel_regmap,
 908         .set_voltage_sel        = regulator_set_voltage_sel_regmap,
 909         .set_voltage_time_sel   = regulator_set_voltage_time_sel,
 910         .set_suspend_disable    = s2mps14_regulator_set_suspend_disable,
 911         .set_ramp_delay         = s2mpu02_set_ramp_delay,
 912 };
 913
 914 #define regulator_desc_s2mpu02_ldo1(num) {              \
 915         .name           = "LDO"#num,                    \
 916         .id             = S2MPU02_LDO##num,             \
 917         .ops            = &s2mpu02_ldo_ops,             \
 918         .type           = REGULATOR_VOLTAGE,            \
 919         .owner          = THIS_MODULE,                  \
 920         .min_uV         = S2MPU02_LDO_MIN_900MV,        \
 921         .uV_step        = S2MPU02_LDO_STEP_12_5MV,      \
 922         .linear_min_sel = S2MPU02_LDO_GROUP1_START_SEL, \
 923         .n_voltages     = S2MPU02_LDO_N_VOLTAGES,       \
 924         .vsel_reg       = S2MPU02_REG_L1CTRL,           \
 925         .vsel_mask      = S2MPU02_LDO_VSEL_MASK,        \
 926         .enable_reg     = S2MPU02_REG_L1CTRL,           \
 927         .enable_mask    = S2MPU02_ENABLE_MASK           \
 928 }
 929 #define regulator_desc_s2mpu02_ldo2(num) {              \
 930         .name           = "LDO"#num,                    \
 931         .id             = S2MPU02_LDO##num,             \
 932         .ops            = &s2mpu02_ldo_ops,             \
 933         .type           = REGULATOR_VOLTAGE,            \
 934         .owner          = THIS_MODULE,                  \
 935         .min_uV         = S2MPU02_LDO_MIN_1050MV,       \
 936         .uV_step        = S2MPU02_LDO_STEP_25MV,        \
 937         .linear_min_sel = S2MPU02_LDO_GROUP2_START_SEL, \
 938         .n_voltages     = S2MPU02_LDO_N_VOLTAGES,       \
 939         .vsel_reg       = S2MPU02_REG_L2CTRL1,          \
 940         .vsel_mask      = S2MPU02_LDO_VSEL_MASK,        \
 941         .enable_reg     = S2MPU02_REG_L2CTRL1,          \
 942         .enable_mask    = S2MPU02_ENABLE_MASK           \
 943 }
 944 #define regulator_desc_s2mpu02_ldo3(num) {              \
 945         .name           = "LDO"#num,                    \
 946         .id             = S2MPU02_LDO##num,             \
 947         .ops            = &s2mpu02_ldo_ops,             \
 948         .type           = REGULATOR_VOLTAGE,            \
 949         .owner          = THIS_MODULE,                  \
 950         .min_uV         = S2MPU02_LDO_MIN_900MV,        \
 951         .uV_step        = S2MPU02_LDO_STEP_12_5MV,      \
 952         .linear_min_sel = S2MPU02_LDO_GROUP1_START_SEL, \
 953         .n_voltages     = S2MPU02_LDO_N_VOLTAGES,       \
 954         .vsel_reg       = S2MPU02_REG_L3CTRL + num - 3, \
 955         .vsel_mask      = S2MPU02_LDO_VSEL_MASK,        \
 956         .enable_reg     = S2MPU02_REG_L3CTRL + num - 3, \
 957         .enable_mask    = S2MPU02_ENABLE_MASK           \
 958 }
 959 #define regulator_desc_s2mpu02_ldo4(num) {              \
 960         .name           = "LDO"#num,                    \
 961         .id             = S2MPU02_LDO##num,             \
 962         .ops            = &s2mpu02_ldo_ops,             \
 963         .type           = REGULATOR_VOLTAGE,            \
 964         .owner          = THIS_MODULE,                  \
 965         .min_uV         = S2MPU02_LDO_MIN_1050MV,       \
 966         .uV_step        = S2MPU02_LDO_STEP_25MV,        \
 967         .linear_min_sel = S2MPU02_LDO_GROUP2_START_SEL, \
 968         .n_voltages     = S2MPU02_LDO_N_VOLTAGES,       \
 969         .vsel_reg       = S2MPU02_REG_L3CTRL + num - 3, \
 970         .vsel_mask      = S2MPU02_LDO_VSEL_MASK,        \
 971         .enable_reg     = S2MPU02_REG_L3CTRL + num - 3, \
 972         .enable_mask    = S2MPU02_ENABLE_MASK           \
 973 }
 974 #define regulator_desc_s2mpu02_ldo5(num) {              \
 975         .name           = "LDO"#num,                    \
 976         .id             = S2MPU02_LDO##num,             \
 977         .ops            = &s2mpu02_ldo_ops,             \
 978         .type           = REGULATOR_VOLTAGE,            \
 979         .owner          = THIS_MODULE,                  \
 980         .min_uV         = S2MPU02_LDO_MIN_1600MV,       \
 981         .uV_step        = S2MPU02_LDO_STEP_50MV,        \
 982         .linear_min_sel = S2MPU02_LDO_GROUP3_START_SEL, \
 983         .n_voltages     = S2MPU02_LDO_N_VOLTAGES,       \
 984         .vsel_reg       = S2MPU02_REG_L3CTRL + num - 3, \
 985         .vsel_mask      = S2MPU02_LDO_VSEL_MASK,        \
 986         .enable_reg     = S2MPU02_REG_L3CTRL + num - 3, \
 987         .enable_mask    = S2MPU02_ENABLE_MASK           \
 988 }
 989
 990 #define regulator_desc_s2mpu02_buck1234(num) {                  \
 991         .name           = "BUCK"#num,                           \
 992         .id             = S2MPU02_BUCK##num,                    \
 993         .ops            = &s2mpu02_buck_ops,                    \
 994         .type           = REGULATOR_VOLTAGE,                    \
 995         .owner          = THIS_MODULE,                          \
 996         .min_uV         = S2MPU02_BUCK1234_MIN_600MV,           \
 997         .uV_step        = S2MPU02_BUCK1234_STEP_6_25MV,         \
 998         .n_voltages     = S2MPU02_BUCK_N_VOLTAGES,              \
 999         .linear_min_sel = S2MPU02_BUCK1234_START_SEL,           \
1000         .ramp_delay     = S2MPU02_BUCK_RAMP_DELAY,              \
1001         .vsel_reg       = S2MPU02_REG_B1CTRL2 + (num - 1) * 2,  \
1002         .vsel_mask      = S2MPU02_BUCK_VSEL_MASK,               \
1003         .enable_reg     = S2MPU02_REG_B1CTRL1 + (num - 1) * 2,  \
1004         .enable_mask    = S2MPU02_ENABLE_MASK                   \
1005 }
1006 #define regulator_desc_s2mpu02_buck5(num) {                     \
1007         .name           = "BUCK"#num,                           \
1008         .id             = S2MPU02_BUCK##num,                    \
1009         .ops            = &s2mpu02_ldo_ops,                     \
1010         .type           = REGULATOR_VOLTAGE,                    \
1011         .owner          = THIS_MODULE,                          \
1012         .min_uV         = S2MPU02_BUCK5_MIN_1081_25MV,          \
1013         .uV_step        = S2MPU02_BUCK5_STEP_6_25MV,            \
1014         .n_voltages     = S2MPU02_BUCK_N_VOLTAGES,              \
1015         .linear_min_sel = S2MPU02_BUCK5_START_SEL,              \
1016         .ramp_delay     = S2MPU02_BUCK_RAMP_DELAY,              \
1017         .vsel_reg       = S2MPU02_REG_B5CTRL2,                  \
1018         .vsel_mask      = S2MPU02_BUCK_VSEL_MASK,               \
1019         .enable_reg     = S2MPU02_REG_B5CTRL1,                  \
1020         .enable_mask    = S2MPU02_ENABLE_MASK                   \
1021 }
1022 #define regulator_desc_s2mpu02_buck6(num) {                     \
1023         .name           = "BUCK"#num,                           \
1024         .id             = S2MPU02_BUCK##num,                    \
1025         .ops            = &s2mpu02_ldo_ops,                     \
1026         .type           = REGULATOR_VOLTAGE,                    \
1027         .owner          = THIS_MODULE,                          \
1028         .min_uV         = S2MPU02_BUCK6_MIN_1700MV,             \
1029         .uV_step        = S2MPU02_BUCK6_STEP_2_50MV,            \
1030         .n_voltages     = S2MPU02_BUCK_N_VOLTAGES,              \
1031         .linear_min_sel = S2MPU02_BUCK6_START_SEL,              \
1032         .ramp_delay     = S2MPU02_BUCK_RAMP_DELAY,              \
1033         .vsel_reg       = S2MPU02_REG_B6CTRL2,                  \
1034         .vsel_mask      = S2MPU02_BUCK_VSEL_MASK,               \
1035         .enable_reg     = S2MPU02_REG_B6CTRL1,                  \
1036         .enable_mask    = S2MPU02_ENABLE_MASK                   \
1037 }
1038 #define regulator_desc_s2mpu02_buck7(num) {                     \
1039         .name           = "BUCK"#num,                           \
1040         .id             = S2MPU02_BUCK##num,                    \
1041         .ops            = &s2mpu02_ldo_ops,                     \
1042         .type           = REGULATOR_VOLTAGE,                    \
1043         .owner          = THIS_MODULE,                          \
1044         .min_uV         = S2MPU02_BUCK7_MIN_900MV,              \
1045         .uV_step        = S2MPU02_BUCK7_STEP_6_25MV,            \
1046         .n_voltages     = S2MPU02_BUCK_N_VOLTAGES,              \
1047         .linear_min_sel = S2MPU02_BUCK7_START_SEL,              \
1048         .ramp_delay     = S2MPU02_BUCK_RAMP_DELAY,              \
1049         .vsel_reg       = S2MPU02_REG_B7CTRL2,                  \
1050         .vsel_mask      = S2MPU02_BUCK_VSEL_MASK,               \
1051         .enable_reg     = S2MPU02_REG_B7CTRL1,                  \
1052         .enable_mask    = S2MPU02_ENABLE_MASK                   \
1053 }
1054
1055 static const struct regulator_desc s2mpu02_regulators[] = {
1056         regulator_desc_s2mpu02_ldo1(1),
1057         regulator_desc_s2mpu02_ldo2(2),
1058         regulator_desc_s2mpu02_ldo4(3),
1059         regulator_desc_s2mpu02_ldo5(4),
1060         regulator_desc_s2mpu02_ldo4(5),
1061         regulator_desc_s2mpu02_ldo3(6),
1062         regulator_desc_s2mpu02_ldo3(7),
1063         regulator_desc_s2mpu02_ldo4(8),
1064         regulator_desc_s2mpu02_ldo5(9),
1065         regulator_desc_s2mpu02_ldo3(10),
1066         regulator_desc_s2mpu02_ldo4(11),
1067         regulator_desc_s2mpu02_ldo5(12),
1068         regulator_desc_s2mpu02_ldo5(13),
1069         regulator_desc_s2mpu02_ldo5(14),
1070         regulator_desc_s2mpu02_ldo5(15),
1071         regulator_desc_s2mpu02_ldo5(16),
1072         regulator_desc_s2mpu02_ldo4(17),
1073         regulator_desc_s2mpu02_ldo5(18),
1074         regulator_desc_s2mpu02_ldo3(19),
1075         regulator_desc_s2mpu02_ldo4(20),
1076         regulator_desc_s2mpu02_ldo5(21),
1077         regulator_desc_s2mpu02_ldo5(22),
1078         regulator_desc_s2mpu02_ldo5(23),
1079         regulator_desc_s2mpu02_ldo4(24),
1080         regulator_desc_s2mpu02_ldo5(25),
1081         regulator_desc_s2mpu02_ldo4(26),
1082         regulator_desc_s2mpu02_ldo5(27),
1083         regulator_desc_s2mpu02_ldo5(28),
1084         regulator_desc_s2mpu02_buck1234(1),
1085         regulator_desc_s2mpu02_buck1234(2),
1086         regulator_desc_s2mpu02_buck1234(3),
1087         regulator_desc_s2mpu02_buck1234(4),
1088         regulator_desc_s2mpu02_buck5(5),
1089         regulator_desc_s2mpu02_buck6(6),
1090         regulator_desc_s2mpu02_buck7(7),
1091 };
1092
1093 static int s2mps11_pmic_probe(struct platform_device *pdev)
1094 {
1095         struct sec_pmic_dev *iodev = dev_get_drvdata(pdev->dev.parent);
1096         struct sec_platform_data *pdata = NULL;
1097         struct of_regulator_match *rdata = NULL;
1098         struct regulator_config config = { };
1099         struct s2mps11_info *s2mps11;
1100         unsigned int rdev_num = 0;
1101         int i, ret = 0;
1102         const struct regulator_desc *regulators;
1103
1104         s2mps11 = devm_kzalloc(&pdev->dev, sizeof(struct s2mps11_info),
1105                                 GFP_KERNEL);
1106         if (!s2mps11)
1107                 return -ENOMEM;
1108
1109         s2mps11->dev_type = platform_get_device_id(pdev)->driver_data;
1110         switch (s2mps11->dev_type) {
1111         case S2MPS11X:
1112                 rdev_num = ARRAY_SIZE(s2mps11_regulators);
1113                 regulators = s2mps11_regulators;
1114                 BUILD_BUG_ON(S2MPS_REGULATOR_MAX < ARRAY_SIZE(s2mps11_regulators));
1115                 break;
1116         case S2MPS13X:
1117                 rdev_num = ARRAY_SIZE(s2mps13_regulators);
1118                 regulators = s2mps13_regulators;
1119                 BUILD_BUG_ON(S2MPS_REGULATOR_MAX < ARRAY_SIZE(s2mps13_regulators));
1120                 break;
1121         case S2MPS14X:
1122                 rdev_num = ARRAY_SIZE(s2mps14_regulators);
1123                 regulators = s2mps14_regulators;
1124                 BUILD_BUG_ON(S2MPS_REGULATOR_MAX < ARRAY_SIZE(s2mps14_regulators));
1125                 break;
1126         case S2MPS15X:
1127                 rdev_num = ARRAY_SIZE(s2mps15_regulators);
1128                 regulators = s2mps15_regulators;
1129                 BUILD_BUG_ON(S2MPS_REGULATOR_MAX < ARRAY_SIZE(s2mps15_regulators));
1130                 break;
1131         case S2MPU02:
1132                 rdev_num = ARRAY_SIZE(s2mpu02_regulators);
1133                 regulators = s2mpu02_regulators;
1134                 BUILD_BUG_ON(S2MPS_REGULATOR_MAX < ARRAY_SIZE(s2mpu02_regulators));
1135                 break;
1136         default:
1137                 dev_err(&pdev->dev, "Invalid device type: %u\n",
1138                                     s2mps11->dev_type);
1139                 return -EINVAL;
1140         }
1141
1142         s2mps11->ext_control_gpio = devm_kmalloc(&pdev->dev,
1143                         sizeof(*s2mps11->ext_control_gpio) * rdev_num,
1144                         GFP_KERNEL);
1145         if (!s2mps11->ext_control_gpio)
1146                 return -ENOMEM;
1147         /*
1148          * 0 is a valid GPIO so initialize all GPIO-s to negative value
1149          * to indicate that external control won't be used for this regulator.
1150          */
1151         for (i = 0; i < rdev_num; i++)
1152                 s2mps11->ext_control_gpio[i] = -EINVAL;
1153
1154         if (!iodev->dev->of_node) {
1155                 if (iodev->pdata) {
1156                         pdata = iodev->pdata;
1157                         goto common_reg;
1158                 } else {
1159                         dev_err(pdev->dev.parent,
1160                                 "Platform data or DT node not supplied\n");
1161                         return -ENODEV;
1162                 }
1163         }
1164
1165         rdata = kzalloc(sizeof(*rdata) * rdev_num, GFP_KERNEL);
1166         if (!rdata)
1167                 return -ENOMEM;
1168
1169         for (i = 0; i < rdev_num; i++)
1170                 rdata[i].name = regulators[i].name;
1171
1172         ret = s2mps11_pmic_dt_parse(pdev, rdata, s2mps11, rdev_num);
1173         if (ret)
1174                 goto out;
1175
1176 common_reg:
1177         platform_set_drvdata(pdev, s2mps11);
1178
1179         config.dev = &pdev->dev;
1180         config.regmap = iodev->regmap_pmic;
1181         config.driver_data = s2mps11;
1182         config.ena_gpio_flags = GPIOF_OUT_INIT_HIGH;
1183         config.ena_gpio_initialized = true;
1184         for (i = 0; i < rdev_num; i++) {
1185                 struct regulator_dev *regulator;
1186
1187                 if (pdata) {
1188                         config.init_data = pdata->regulators[i].initdata;
1189                         config.of_node = pdata->regulators[i].reg_node;
1190                 } else {
1191                         config.init_data = rdata[i].init_data;
1192                         config.of_node = rdata[i].of_node;
1193                 }
1194                 config.ena_gpio = s2mps11->ext_control_gpio[i];
1195
1196                 regulator = devm_regulator_register(&pdev->dev,
1197                                                 &regulators[i], &config);
1198                 if (IS_ERR(regulator)) {
1199                         ret = PTR_ERR(regulator);
1200                         dev_err(&pdev->dev, "regulator init failed for %d\n",
1201                                 i);
1202                         goto out;
1203                 }
1204
1205                 if (gpio_is_valid(s2mps11->ext_control_gpio[i])) {
1206                         ret = s2mps14_pmic_enable_ext_control(s2mps11,
1207                                         regulator);
1208                         if (ret < 0) {
1209                                 dev_err(&pdev->dev,
1210                                                 "failed to enable GPIO control over %s: %d\n",
1211                                                 regulator->desc->name, ret);
1212                                 goto out;
1213                         }
1214                 }
1215         }
1216
1217 out:
1218         kfree(rdata);
1219
1220         return ret;
1221 }
1222
1223 static const struct platform_device_id s2mps11_pmic_id[] = {
1224         { "s2mps11-regulator", S2MPS11X},
1225         { "s2mps13-regulator", S2MPS13X},
1226         { "s2mps14-regulator", S2MPS14X},
1227         { "s2mps15-regulator", S2MPS15X},
1228         { "s2mpu02-regulator", S2MPU02},
1229         { },
1230 };
1231 MODULE_DEVICE_TABLE(platform, s2mps11_pmic_id);
1232
1233 static struct platform_driver s2mps11_pmic_driver = {
1234         .driver = {
1235                 .name = "s2mps11-pmic",
1236         },
1237         .probe = s2mps11_pmic_probe,
1238         .id_table = s2mps11_pmic_id,
1239 };
1240
1241 module_platform_driver(s2mps11_pmic_driver);
1242
1243 /* Module information */
1244 MODULE_AUTHOR("Sangbeom Kim <sbkim73@samsung.com>");
1245 MODULE_DESCRIPTION("SAMSUNG S2MPS11/S2MPS14/S2MPS15/S2MPU02 Regulator Driver");
1246 MODULE_LICENSE("GPL");