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         .min_uV         = MIN_800_MV,                   \
 271         .uV_step        = step,                         \
 272         .n_voltages     = S2MPS11_LDO_N_VOLTAGES,       \
 273         .vsel_reg       = S2MPS11_REG_L1CTRL + num - 1, \
 274         .vsel_mask      = S2MPS11_LDO_VSEL_MASK,        \
 275         .enable_reg     = S2MPS11_REG_L1CTRL + num - 1, \
 276         .enable_mask    = S2MPS11_ENABLE_MASK           \
 277 }
 278
 279 #define regulator_desc_s2mps11_buck1_4(num) {                   \
 280         .name           = "BUCK"#num,                           \
 281         .id             = S2MPS11_BUCK##num,                    \
 282         .ops            = &s2mps11_buck_ops,                    \
 283         .type           = REGULATOR_VOLTAGE,                    \
 284         .owner          = THIS_MODULE,                          \
 285         .min_uV         = MIN_600_MV,                           \
 286         .uV_step        = STEP_6_25_MV,                         \
 287         .n_voltages     = S2MPS11_BUCK_N_VOLTAGES,              \
 288         .ramp_delay     = S2MPS11_RAMP_DELAY,                   \
 289         .vsel_reg       = S2MPS11_REG_B1CTRL2 + (num - 1) * 2,  \
 290         .vsel_mask      = S2MPS11_BUCK_VSEL_MASK,               \
 291         .enable_reg     = S2MPS11_REG_B1CTRL1 + (num - 1) * 2,  \
 292         .enable_mask    = S2MPS11_ENABLE_MASK                   \
 293 }
 294
 295 #define regulator_desc_s2mps11_buck5 {                          \
 296         .name           = "BUCK5",                              \
 297         .id             = S2MPS11_BUCK5,                        \
 298         .ops            = &s2mps11_buck_ops,                    \
 299         .type           = REGULATOR_VOLTAGE,                    \
 300         .owner          = THIS_MODULE,                          \
 301         .min_uV         = MIN_600_MV,                           \
 302         .uV_step        = STEP_6_25_MV,                         \
 303         .n_voltages     = S2MPS11_BUCK_N_VOLTAGES,              \
 304         .ramp_delay     = S2MPS11_RAMP_DELAY,                   \
 305         .vsel_reg       = S2MPS11_REG_B5CTRL2,                  \
 306         .vsel_mask      = S2MPS11_BUCK_VSEL_MASK,               \
 307         .enable_reg     = S2MPS11_REG_B5CTRL1,                  \
 308         .enable_mask    = S2MPS11_ENABLE_MASK                   \
 309 }
 310
 311 #define regulator_desc_s2mps11_buck67810(num, min, step) {      \
 312         .name           = "BUCK"#num,                           \
 313         .id             = S2MPS11_BUCK##num,                    \
 314         .ops            = &s2mps11_buck_ops,                    \
 315         .type           = REGULATOR_VOLTAGE,                    \
 316         .owner          = THIS_MODULE,                          \
 317         .min_uV         = min,                                  \
 318         .uV_step        = step,                                 \
 319         .n_voltages     = S2MPS11_BUCK_N_VOLTAGES,              \
 320         .ramp_delay     = S2MPS11_RAMP_DELAY,                   \
 321         .vsel_reg       = S2MPS11_REG_B6CTRL2 + (num - 6) * 2,  \
 322         .vsel_mask      = S2MPS11_BUCK_VSEL_MASK,               \
 323         .enable_reg     = S2MPS11_REG_B6CTRL1 + (num - 6) * 2,  \
 324         .enable_mask    = S2MPS11_ENABLE_MASK                   \
 325 }
 326
 327 #define regulator_desc_s2mps11_buck9 {                          \
 328         .name           = "BUCK9",                              \
 329         .id             = S2MPS11_BUCK9,                        \
 330         .ops            = &s2mps11_buck_ops,                    \
 331         .type           = REGULATOR_VOLTAGE,                    \
 332         .owner          = THIS_MODULE,                          \
 333         .min_uV         = MIN_3000_MV,                          \
 334         .uV_step        = STEP_25_MV,                           \
 335         .n_voltages     = S2MPS11_BUCK9_N_VOLTAGES,             \
 336         .ramp_delay     = S2MPS11_RAMP_DELAY,                   \
 337         .vsel_reg       = S2MPS11_REG_B9CTRL2,                  \
 338         .vsel_mask      = S2MPS11_BUCK9_VSEL_MASK,              \
 339         .enable_reg     = S2MPS11_REG_B9CTRL1,                  \
 340         .enable_mask    = S2MPS11_ENABLE_MASK                   \
 341 }
 342
 343 static const struct regulator_desc s2mps11_regulators[] = {
 344         regulator_desc_s2mps11_ldo(1, STEP_25_MV),
 345         regulator_desc_s2mps11_ldo(2, STEP_50_MV),
 346         regulator_desc_s2mps11_ldo(3, STEP_50_MV),
 347         regulator_desc_s2mps11_ldo(4, STEP_50_MV),
 348         regulator_desc_s2mps11_ldo(5, STEP_50_MV),
 349         regulator_desc_s2mps11_ldo(6, STEP_25_MV),
 350         regulator_desc_s2mps11_ldo(7, STEP_50_MV),
 351         regulator_desc_s2mps11_ldo(8, STEP_50_MV),
 352         regulator_desc_s2mps11_ldo(9, STEP_50_MV),
 353         regulator_desc_s2mps11_ldo(10, STEP_50_MV),
 354         regulator_desc_s2mps11_ldo(11, STEP_25_MV),
 355         regulator_desc_s2mps11_ldo(12, STEP_50_MV),
 356         regulator_desc_s2mps11_ldo(13, STEP_50_MV),
 357         regulator_desc_s2mps11_ldo(14, STEP_50_MV),
 358         regulator_desc_s2mps11_ldo(15, STEP_50_MV),
 359         regulator_desc_s2mps11_ldo(16, STEP_50_MV),
 360         regulator_desc_s2mps11_ldo(17, STEP_50_MV),
 361         regulator_desc_s2mps11_ldo(18, STEP_50_MV),
 362         regulator_desc_s2mps11_ldo(19, STEP_50_MV),
 363         regulator_desc_s2mps11_ldo(20, STEP_50_MV),
 364         regulator_desc_s2mps11_ldo(21, STEP_50_MV),
 365         regulator_desc_s2mps11_ldo(22, STEP_25_MV),
 366         regulator_desc_s2mps11_ldo(23, STEP_25_MV),
 367         regulator_desc_s2mps11_ldo(24, STEP_50_MV),
 368         regulator_desc_s2mps11_ldo(25, STEP_50_MV),
 369         regulator_desc_s2mps11_ldo(26, STEP_50_MV),
 370         regulator_desc_s2mps11_ldo(27, STEP_25_MV),
 371         regulator_desc_s2mps11_ldo(28, STEP_50_MV),
 372         regulator_desc_s2mps11_ldo(29, STEP_50_MV),
 373         regulator_desc_s2mps11_ldo(30, STEP_50_MV),
 374         regulator_desc_s2mps11_ldo(31, STEP_50_MV),
 375         regulator_desc_s2mps11_ldo(32, STEP_50_MV),
 376         regulator_desc_s2mps11_ldo(33, STEP_50_MV),
 377         regulator_desc_s2mps11_ldo(34, STEP_50_MV),
 378         regulator_desc_s2mps11_ldo(35, STEP_50_MV),
 379         regulator_desc_s2mps11_ldo(36, STEP_50_MV),
 380         regulator_desc_s2mps11_ldo(37, STEP_50_MV),
 381         regulator_desc_s2mps11_ldo(38, STEP_50_MV),
 382         regulator_desc_s2mps11_buck1_4(1),
 383         regulator_desc_s2mps11_buck1_4(2),
 384         regulator_desc_s2mps11_buck1_4(3),
 385         regulator_desc_s2mps11_buck1_4(4),
 386         regulator_desc_s2mps11_buck5,
 387         regulator_desc_s2mps11_buck67810(6, MIN_600_MV, STEP_6_25_MV),
 388         regulator_desc_s2mps11_buck67810(7, MIN_600_MV, STEP_6_25_MV),
 389         regulator_desc_s2mps11_buck67810(8, MIN_600_MV, STEP_6_25_MV),
 390         regulator_desc_s2mps11_buck9,
 391         regulator_desc_s2mps11_buck67810(10, MIN_750_MV, STEP_12_5_MV),
 392 };
 393
 394 static struct regulator_ops s2mps14_reg_ops;
 395
 396 #define regulator_desc_s2mps13_ldo(num, min, step, min_sel) {   \
 397         .name           = "LDO"#num,                            \
 398         .id             = S2MPS13_LDO##num,                     \
 399         .ops            = &s2mps14_reg_ops,                     \
 400         .type           = REGULATOR_VOLTAGE,                    \
 401         .owner          = THIS_MODULE,                          \
 402         .min_uV         = min,                                  \
 403         .uV_step        = step,                                 \
 404         .linear_min_sel = min_sel,                              \
 405         .n_voltages     = S2MPS14_LDO_N_VOLTAGES,               \
 406         .vsel_reg       = S2MPS13_REG_L1CTRL + num - 1,         \
 407         .vsel_mask      = S2MPS14_LDO_VSEL_MASK,                \
 408         .enable_reg     = S2MPS13_REG_L1CTRL + num - 1,         \
 409         .enable_mask    = S2MPS14_ENABLE_MASK                   \
 410 }
 411
 412 #define regulator_desc_s2mps13_buck(num, min, step, min_sel) {  \
 413         .name           = "BUCK"#num,                           \
 414         .id             = S2MPS13_BUCK##num,                    \
 415         .ops            = &s2mps14_reg_ops,                     \
 416         .type           = REGULATOR_VOLTAGE,                    \
 417         .owner          = THIS_MODULE,                          \
 418         .min_uV         = min,                                  \
 419         .uV_step        = step,                                 \
 420         .linear_min_sel = min_sel,                              \
 421         .n_voltages     = S2MPS14_BUCK_N_VOLTAGES,              \
 422         .ramp_delay     = S2MPS13_BUCK_RAMP_DELAY,              \
 423         .vsel_reg       = S2MPS13_REG_B1OUT + (num - 1) * 2,    \
 424         .vsel_mask      = S2MPS14_BUCK_VSEL_MASK,               \
 425         .enable_reg     = S2MPS13_REG_B1CTRL + (num - 1) * 2,   \
 426         .enable_mask    = S2MPS14_ENABLE_MASK                   \
 427 }
 428
 429 #define regulator_desc_s2mps13_buck7(num, min, step, min_sel) { \
 430         .name           = "BUCK"#num,                           \
 431         .id             = S2MPS13_BUCK##num,                    \
 432         .ops            = &s2mps14_reg_ops,                     \
 433         .type           = REGULATOR_VOLTAGE,                    \
 434         .owner          = THIS_MODULE,                          \
 435         .min_uV         = min,                                  \
 436         .uV_step        = step,                                 \
 437         .linear_min_sel = min_sel,                              \
 438         .n_voltages     = S2MPS14_BUCK_N_VOLTAGES,              \
 439         .ramp_delay     = S2MPS13_BUCK_RAMP_DELAY,              \
 440         .vsel_reg       = S2MPS13_REG_B1OUT + (num) * 2 - 1,    \
 441         .vsel_mask      = S2MPS14_BUCK_VSEL_MASK,               \
 442         .enable_reg     = S2MPS13_REG_B1CTRL + (num - 1) * 2,   \
 443         .enable_mask    = S2MPS14_ENABLE_MASK                   \
 444 }
 445
 446 #define regulator_desc_s2mps13_buck8_10(num, min, step, min_sel) {      \
 447         .name           = "BUCK"#num,                           \
 448         .id             = S2MPS13_BUCK##num,                    \
 449         .ops            = &s2mps14_reg_ops,                     \
 450         .type           = REGULATOR_VOLTAGE,                    \
 451         .owner          = THIS_MODULE,                          \
 452         .min_uV         = min,                                  \
 453         .uV_step        = step,                                 \
 454         .linear_min_sel = min_sel,                              \
 455         .n_voltages     = S2MPS14_BUCK_N_VOLTAGES,              \
 456         .ramp_delay     = S2MPS13_BUCK_RAMP_DELAY,              \
 457         .vsel_reg       = S2MPS13_REG_B1OUT + (num) * 2 - 1,    \
 458         .vsel_mask      = S2MPS14_BUCK_VSEL_MASK,               \
 459         .enable_reg     = S2MPS13_REG_B1CTRL + (num) * 2 - 1,   \
 460         .enable_mask    = S2MPS14_ENABLE_MASK                   \
 461 }
 462
 463 static const struct regulator_desc s2mps13_regulators[] = {
 464         regulator_desc_s2mps13_ldo(1,  MIN_800_MV,  STEP_12_5_MV, 0x00),
 465         regulator_desc_s2mps13_ldo(2,  MIN_1400_MV, STEP_50_MV,   0x0C),
 466         regulator_desc_s2mps13_ldo(3,  MIN_1000_MV, STEP_25_MV,   0x08),
 467         regulator_desc_s2mps13_ldo(4,  MIN_800_MV,  STEP_12_5_MV, 0x00),
 468         regulator_desc_s2mps13_ldo(5,  MIN_800_MV,  STEP_12_5_MV, 0x00),
 469         regulator_desc_s2mps13_ldo(6,  MIN_800_MV,  STEP_12_5_MV, 0x00),
 470         regulator_desc_s2mps13_ldo(7,  MIN_1000_MV, STEP_25_MV,   0x08),
 471         regulator_desc_s2mps13_ldo(8,  MIN_1000_MV, STEP_25_MV,   0x08),
 472         regulator_desc_s2mps13_ldo(9,  MIN_1000_MV, STEP_25_MV,   0x08),
 473         regulator_desc_s2mps13_ldo(10, MIN_1400_MV, STEP_50_MV,   0x0C),
 474         regulator_desc_s2mps13_ldo(11, MIN_800_MV,  STEP_25_MV,   0x10),
 475         regulator_desc_s2mps13_ldo(12, MIN_800_MV,  STEP_25_MV,   0x10),
 476         regulator_desc_s2mps13_ldo(13, MIN_800_MV,  STEP_25_MV,   0x10),
 477         regulator_desc_s2mps13_ldo(14, MIN_800_MV,  STEP_12_5_MV, 0x00),
 478         regulator_desc_s2mps13_ldo(15, MIN_800_MV,  STEP_12_5_MV, 0x00),
 479         regulator_desc_s2mps13_ldo(16, MIN_1400_MV, STEP_50_MV,   0x0C),
 480         regulator_desc_s2mps13_ldo(17, MIN_1400_MV, STEP_50_MV,   0x0C),
 481         regulator_desc_s2mps13_ldo(18, MIN_1000_MV, STEP_25_MV,   0x08),
 482         regulator_desc_s2mps13_ldo(19, MIN_1000_MV, STEP_25_MV,   0x08),
 483         regulator_desc_s2mps13_ldo(20, MIN_1400_MV, STEP_50_MV,   0x0C),
 484         regulator_desc_s2mps13_ldo(21, MIN_1000_MV, STEP_25_MV,   0x08),
 485         regulator_desc_s2mps13_ldo(22, MIN_1000_MV, STEP_25_MV,   0x08),
 486         regulator_desc_s2mps13_ldo(23, MIN_800_MV,  STEP_12_5_MV, 0x00),
 487         regulator_desc_s2mps13_ldo(24, MIN_800_MV,  STEP_12_5_MV, 0x00),
 488         regulator_desc_s2mps13_ldo(25, MIN_1400_MV, STEP_50_MV,   0x0C),
 489         regulator_desc_s2mps13_ldo(26, MIN_1400_MV, STEP_50_MV,   0x0C),
 490         regulator_desc_s2mps13_ldo(27, MIN_1400_MV, STEP_50_MV,   0x0C),
 491         regulator_desc_s2mps13_ldo(28, MIN_1000_MV, STEP_25_MV,   0x08),
 492         regulator_desc_s2mps13_ldo(29, MIN_1400_MV, STEP_50_MV,   0x0C),
 493         regulator_desc_s2mps13_ldo(30, MIN_1400_MV, STEP_50_MV,   0x0C),
 494         regulator_desc_s2mps13_ldo(31, MIN_1000_MV, STEP_25_MV,   0x08),
 495         regulator_desc_s2mps13_ldo(32, MIN_1000_MV, STEP_25_MV,   0x08),
 496         regulator_desc_s2mps13_ldo(33, MIN_1400_MV, STEP_50_MV,   0x0C),
 497         regulator_desc_s2mps13_ldo(34, MIN_1000_MV, STEP_25_MV,   0x08),
 498         regulator_desc_s2mps13_ldo(35, MIN_1400_MV, STEP_50_MV,   0x0C),
 499         regulator_desc_s2mps13_ldo(36, MIN_800_MV,  STEP_12_5_MV, 0x00),
 500         regulator_desc_s2mps13_ldo(37, MIN_1000_MV, STEP_25_MV,   0x08),
 501         regulator_desc_s2mps13_ldo(38, MIN_1400_MV, STEP_50_MV,   0x0C),
 502         regulator_desc_s2mps13_ldo(39, MIN_1000_MV, STEP_25_MV,   0x08),
 503         regulator_desc_s2mps13_ldo(40, MIN_1400_MV, STEP_50_MV,   0x0C),
 504         regulator_desc_s2mps13_buck(1,  MIN_500_MV,  STEP_6_25_MV, 0x10),
 505         regulator_desc_s2mps13_buck(2,  MIN_500_MV,  STEP_6_25_MV, 0x10),
 506         regulator_desc_s2mps13_buck(3,  MIN_500_MV,  STEP_6_25_MV, 0x10),
 507         regulator_desc_s2mps13_buck(4,  MIN_500_MV,  STEP_6_25_MV, 0x10),
 508         regulator_desc_s2mps13_buck(5,  MIN_500_MV,  STEP_6_25_MV, 0x10),
 509         regulator_desc_s2mps13_buck(6,  MIN_500_MV,  STEP_6_25_MV, 0x10),
 510         regulator_desc_s2mps13_buck7(7,  MIN_500_MV,  STEP_6_25_MV, 0x10),
 511         regulator_desc_s2mps13_buck8_10(8,  MIN_1000_MV, STEP_12_5_MV, 0x20),
 512         regulator_desc_s2mps13_buck8_10(9,  MIN_1000_MV, STEP_12_5_MV, 0x20),
 513         regulator_desc_s2mps13_buck8_10(10, MIN_500_MV,  STEP_6_25_MV, 0x10),
 514 };
 515
 516 static int s2mps14_regulator_enable(struct regulator_dev *rdev)
 517 {
 518         struct s2mps11_info *s2mps11 = rdev_get_drvdata(rdev);
 519         unsigned int val;
 520
 521         switch (s2mps11->dev_type) {
 522         case S2MPS13X:
 523         case S2MPS14X:
 524                 if (test_bit(rdev_get_id(rdev), s2mps11->suspend_state))
 525                         val = S2MPS14_ENABLE_SUSPEND;
 526                 else if (gpio_is_valid(s2mps11->ext_control_gpio[rdev_get_id(rdev)]))
 527                         val = S2MPS14_ENABLE_EXT_CONTROL;
 528                 else
 529                         val = rdev->desc->enable_mask;
 530                 break;
 531         case S2MPU02:
 532                 if (test_bit(rdev_get_id(rdev), s2mps11->suspend_state))
 533                         val = S2MPU02_ENABLE_SUSPEND;
 534                 else
 535                         val = rdev->desc->enable_mask;
 536                 break;
 537         default:
 538                 return -EINVAL;
 539         }
 540
 541         return regmap_update_bits(rdev->regmap, rdev->desc->enable_reg,
 542                         rdev->desc->enable_mask, val);
 543 }
 544
 545 static int s2mps14_regulator_set_suspend_disable(struct regulator_dev *rdev)
 546 {
 547         int ret;
 548         unsigned int val, state;
 549         struct s2mps11_info *s2mps11 = rdev_get_drvdata(rdev);
 550         int rdev_id = rdev_get_id(rdev);
 551
 552         /* Below LDO should be always on or does not support suspend mode. */
 553         switch (s2mps11->dev_type) {
 554         case S2MPS13X:
 555         case S2MPS14X:
 556                 switch (rdev_id) {
 557                 case S2MPS14_LDO3:
 558                         return 0;
 559                 default:
 560                         state = S2MPS14_ENABLE_SUSPEND;
 561                         break;
 562                 }
 563                 break;
 564         case S2MPU02:
 565                 switch (rdev_id) {
 566                 case S2MPU02_LDO13:
 567                 case S2MPU02_LDO14:
 568                 case S2MPU02_LDO15:
 569                 case S2MPU02_LDO17:
 570                 case S2MPU02_BUCK7:
 571                         state = S2MPU02_DISABLE_SUSPEND;
 572                         break;
 573                 default:
 574                         state = S2MPU02_ENABLE_SUSPEND;
 575                         break;
 576                 }
 577                 break;
 578         default:
 579                 return -EINVAL;
 580         }
 581
 582         ret = regmap_read(rdev->regmap, rdev->desc->enable_reg, &val);
 583         if (ret < 0)
 584                 return ret;
 585
 586         set_bit(rdev_get_id(rdev), s2mps11->suspend_state);
 587         /*
 588          * Don't enable suspend mode if regulator is already disabled because
 589          * this would effectively for a short time turn on the regulator after
 590          * resuming.
 591          * However we still want to toggle the suspend_state bit for regulator
 592          * in case if it got enabled before suspending the system.
 593          */
 594         if (!(val & rdev->desc->enable_mask))
 595                 return 0;
 596
 597         return regmap_update_bits(rdev->regmap, rdev->desc->enable_reg,
 598                         rdev->desc->enable_mask, state);
 599 }
 600
 601 static struct regulator_ops s2mps14_reg_ops = {
 602         .list_voltage           = regulator_list_voltage_linear,
 603         .map_voltage            = regulator_map_voltage_linear,
 604         .is_enabled             = regulator_is_enabled_regmap,
 605         .enable                 = s2mps14_regulator_enable,
 606         .disable                = regulator_disable_regmap,
 607         .get_voltage_sel        = regulator_get_voltage_sel_regmap,
 608         .set_voltage_sel        = regulator_set_voltage_sel_regmap,
 609         .set_voltage_time_sel   = regulator_set_voltage_time_sel,
 610         .set_suspend_disable    = s2mps14_regulator_set_suspend_disable,
 611 };
 612
 613 #define regulator_desc_s2mps14_ldo(num, min, step) {    \
 614         .name           = "LDO"#num,                    \
 615         .id             = S2MPS14_LDO##num,             \
 616         .ops            = &s2mps14_reg_ops,             \
 617         .type           = REGULATOR_VOLTAGE,            \
 618         .owner          = THIS_MODULE,                  \
 619         .min_uV         = min,                          \
 620         .uV_step        = step,                         \
 621         .n_voltages     = S2MPS14_LDO_N_VOLTAGES,       \
 622         .vsel_reg       = S2MPS14_REG_L1CTRL + num - 1, \
 623         .vsel_mask      = S2MPS14_LDO_VSEL_MASK,        \
 624         .enable_reg     = S2MPS14_REG_L1CTRL + num - 1, \
 625         .enable_mask    = S2MPS14_ENABLE_MASK           \
 626 }
 627
 628 #define regulator_desc_s2mps14_buck(num, min, step, min_sel) {  \
 629         .name           = "BUCK"#num,                           \
 630         .id             = S2MPS14_BUCK##num,                    \
 631         .ops            = &s2mps14_reg_ops,                     \
 632         .type           = REGULATOR_VOLTAGE,                    \
 633         .owner          = THIS_MODULE,                          \
 634         .min_uV         = min,                                  \
 635         .uV_step        = step,                                 \
 636         .n_voltages     = S2MPS14_BUCK_N_VOLTAGES,              \
 637         .linear_min_sel = min_sel,                              \
 638         .ramp_delay     = S2MPS14_BUCK_RAMP_DELAY,              \
 639         .vsel_reg       = S2MPS14_REG_B1CTRL2 + (num - 1) * 2,  \
 640         .vsel_mask      = S2MPS14_BUCK_VSEL_MASK,               \
 641         .enable_reg     = S2MPS14_REG_B1CTRL1 + (num - 1) * 2,  \
 642         .enable_mask    = S2MPS14_ENABLE_MASK                   \
 643 }
 644
 645 static const struct regulator_desc s2mps14_regulators[] = {
 646         regulator_desc_s2mps14_ldo(1, MIN_800_MV, STEP_12_5_MV),
 647         regulator_desc_s2mps14_ldo(2, MIN_800_MV, STEP_12_5_MV),
 648         regulator_desc_s2mps14_ldo(3, MIN_800_MV, STEP_25_MV),
 649         regulator_desc_s2mps14_ldo(4, MIN_800_MV, STEP_25_MV),
 650         regulator_desc_s2mps14_ldo(5, MIN_800_MV, STEP_12_5_MV),
 651         regulator_desc_s2mps14_ldo(6, MIN_800_MV, STEP_12_5_MV),
 652         regulator_desc_s2mps14_ldo(7, MIN_800_MV, STEP_25_MV),
 653         regulator_desc_s2mps14_ldo(8, MIN_1800_MV, STEP_25_MV),
 654         regulator_desc_s2mps14_ldo(9, MIN_800_MV, STEP_12_5_MV),
 655         regulator_desc_s2mps14_ldo(10, MIN_800_MV, STEP_12_5_MV),
 656         regulator_desc_s2mps14_ldo(11, MIN_800_MV, STEP_25_MV),
 657         regulator_desc_s2mps14_ldo(12, MIN_1800_MV, STEP_25_MV),
 658         regulator_desc_s2mps14_ldo(13, MIN_1800_MV, STEP_25_MV),
 659         regulator_desc_s2mps14_ldo(14, MIN_1800_MV, STEP_25_MV),
 660         regulator_desc_s2mps14_ldo(15, MIN_1800_MV, STEP_25_MV),
 661         regulator_desc_s2mps14_ldo(16, MIN_1800_MV, STEP_25_MV),
 662         regulator_desc_s2mps14_ldo(17, MIN_1800_MV, STEP_25_MV),
 663         regulator_desc_s2mps14_ldo(18, MIN_1800_MV, STEP_25_MV),
 664         regulator_desc_s2mps14_ldo(19, MIN_800_MV, STEP_25_MV),
 665         regulator_desc_s2mps14_ldo(20, MIN_800_MV, STEP_25_MV),
 666         regulator_desc_s2mps14_ldo(21, MIN_800_MV, STEP_25_MV),
 667         regulator_desc_s2mps14_ldo(22, MIN_800_MV, STEP_12_5_MV),
 668         regulator_desc_s2mps14_ldo(23, MIN_800_MV, STEP_25_MV),
 669         regulator_desc_s2mps14_ldo(24, MIN_1800_MV, STEP_25_MV),
 670         regulator_desc_s2mps14_ldo(25, MIN_1800_MV, STEP_25_MV),
 671         regulator_desc_s2mps14_buck(1, MIN_600_MV, STEP_6_25_MV,
 672                                     S2MPS14_BUCK1235_START_SEL),
 673         regulator_desc_s2mps14_buck(2, MIN_600_MV, STEP_6_25_MV,
 674                                     S2MPS14_BUCK1235_START_SEL),
 675         regulator_desc_s2mps14_buck(3, MIN_600_MV, STEP_6_25_MV,
 676                                     S2MPS14_BUCK1235_START_SEL),
 677         regulator_desc_s2mps14_buck(4, MIN_1400_MV, STEP_12_5_MV,
 678                                     S2MPS14_BUCK4_START_SEL),
 679         regulator_desc_s2mps14_buck(5, MIN_600_MV, STEP_6_25_MV,
 680                                     S2MPS14_BUCK1235_START_SEL),
 681 };
 682
 683 static struct regulator_ops s2mps15_reg_ldo_ops = {
 684         .list_voltage           = regulator_list_voltage_linear_range,
 685         .map_voltage            = regulator_map_voltage_linear_range,
 686         .is_enabled             = regulator_is_enabled_regmap,
 687         .enable                 = regulator_enable_regmap,
 688         .disable                = regulator_disable_regmap,
 689         .get_voltage_sel        = regulator_get_voltage_sel_regmap,
 690         .set_voltage_sel        = regulator_set_voltage_sel_regmap,
 691 };
 692
 693 static struct regulator_ops s2mps15_reg_buck_ops = {
 694         .list_voltage           = regulator_list_voltage_linear_range,
 695         .map_voltage            = regulator_map_voltage_linear_range,
 696         .is_enabled             = regulator_is_enabled_regmap,
 697         .enable                 = regulator_enable_regmap,
 698         .disable                = regulator_disable_regmap,
 699         .get_voltage_sel        = regulator_get_voltage_sel_regmap,
 700         .set_voltage_sel        = regulator_set_voltage_sel_regmap,
 701         .set_voltage_time_sel   = regulator_set_voltage_time_sel,
 702 };
 703
 704 #define regulator_desc_s2mps15_ldo(num, range) {        \
 705         .name           = "LDO"#num,                    \
 706         .id             = S2MPS15_LDO##num,             \
 707         .ops            = &s2mps15_reg_ldo_ops,         \
 708         .type           = REGULATOR_VOLTAGE,            \
 709         .owner          = THIS_MODULE,                  \
 710         .linear_ranges  = range,                        \
 711         .n_linear_ranges = ARRAY_SIZE(range),           \
 712         .n_voltages     = S2MPS15_LDO_N_VOLTAGES,       \
 713         .vsel_reg       = S2MPS15_REG_L1CTRL + num - 1, \
 714         .vsel_mask      = S2MPS15_LDO_VSEL_MASK,        \
 715         .enable_reg     = S2MPS15_REG_L1CTRL + num - 1, \
 716         .enable_mask    = S2MPS15_ENABLE_MASK           \
 717 }
 718
 719 #define regulator_desc_s2mps15_buck(num, range) {                       \
 720         .name           = "BUCK"#num,                                   \
 721         .id             = S2MPS15_BUCK##num,                            \
 722         .ops            = &s2mps15_reg_buck_ops,                        \
 723         .type           = REGULATOR_VOLTAGE,                            \
 724         .owner          = THIS_MODULE,                                  \
 725         .linear_ranges  = range,                                        \
 726         .n_linear_ranges = ARRAY_SIZE(range),                           \
 727         .ramp_delay     = 12500,                                        \
 728         .n_voltages     = S2MPS15_BUCK_N_VOLTAGES,                      \
 729         .vsel_reg       = S2MPS15_REG_B1CTRL2 + ((num - 1) * 2),        \
 730         .vsel_mask      = S2MPS15_BUCK_VSEL_MASK,                       \
 731         .enable_reg     = S2MPS15_REG_B1CTRL1 + ((num - 1) * 2),        \
 732         .enable_mask    = S2MPS15_ENABLE_MASK                           \
 733 }
 734
 735 /* voltage range for s2mps15 LDO 3, 5, 15, 16, 18, 20, 23 and 27 */
 736 static const struct regulator_linear_range s2mps15_ldo_voltage_ranges1[] = {
 737         REGULATOR_LINEAR_RANGE(1000000, 0xc, 0x38, 25000),
 738 };
 739
 740 /* voltage range for s2mps15 LDO 2, 6, 14, 17, 19, 21, 24 and 25 */
 741 static const struct regulator_linear_range s2mps15_ldo_voltage_ranges2[] = {
 742         REGULATOR_LINEAR_RANGE(1800000, 0x0, 0x3f, 25000),
 743 };
 744
 745 /* voltage range for s2mps15 LDO 4, 11, 12, 13, 22 and 26 */
 746 static const struct regulator_linear_range s2mps15_ldo_voltage_ranges3[] = {
 747         REGULATOR_LINEAR_RANGE(700000, 0x0, 0x34, 12500),
 748 };
 749
 750 /* voltage range for s2mps15 LDO 7, 8, 9 and 10 */
 751 static const struct regulator_linear_range s2mps15_ldo_voltage_ranges4[] = {
 752         REGULATOR_LINEAR_RANGE(700000, 0xc, 0x18, 25000),
 753 };
 754
 755 /* voltage range for s2mps15 LDO 1 */
 756 static const struct regulator_linear_range s2mps15_ldo_voltage_ranges5[] = {
 757         REGULATOR_LINEAR_RANGE(500000, 0x0, 0x20, 12500),
 758 };
 759
 760 /* voltage range for s2mps15 BUCK 1, 2, 3, 4, 5, 6 and 7 */
 761 static const struct regulator_linear_range s2mps15_buck_voltage_ranges1[] = {
 762         REGULATOR_LINEAR_RANGE(500000, 0x20, 0xb0, 6250),
 763 };
 764
 765 /* voltage range for s2mps15 BUCK 8, 9 and 10 */
 766 static const struct regulator_linear_range s2mps15_buck_voltage_ranges2[] = {
 767         REGULATOR_LINEAR_RANGE(1000000, 0x20, 0xc0, 12500),
 768 };
 769
 770 static const struct regulator_desc s2mps15_regulators[] = {
 771         regulator_desc_s2mps15_ldo(1, s2mps15_ldo_voltage_ranges5),
 772         regulator_desc_s2mps15_ldo(2, s2mps15_ldo_voltage_ranges2),
 773         regulator_desc_s2mps15_ldo(3, s2mps15_ldo_voltage_ranges1),
 774         regulator_desc_s2mps15_ldo(4, s2mps15_ldo_voltage_ranges3),
 775         regulator_desc_s2mps15_ldo(5, s2mps15_ldo_voltage_ranges1),
 776         regulator_desc_s2mps15_ldo(6, s2mps15_ldo_voltage_ranges2),
 777         regulator_desc_s2mps15_ldo(7, s2mps15_ldo_voltage_ranges4),
 778         regulator_desc_s2mps15_ldo(8, s2mps15_ldo_voltage_ranges4),
 779         regulator_desc_s2mps15_ldo(9, s2mps15_ldo_voltage_ranges4),
 780         regulator_desc_s2mps15_ldo(10, s2mps15_ldo_voltage_ranges4),
 781         regulator_desc_s2mps15_ldo(11, s2mps15_ldo_voltage_ranges3),
 782         regulator_desc_s2mps15_ldo(12, s2mps15_ldo_voltage_ranges3),
 783         regulator_desc_s2mps15_ldo(13, s2mps15_ldo_voltage_ranges3),
 784         regulator_desc_s2mps15_ldo(14, s2mps15_ldo_voltage_ranges2),
 785         regulator_desc_s2mps15_ldo(15, s2mps15_ldo_voltage_ranges1),
 786         regulator_desc_s2mps15_ldo(16, s2mps15_ldo_voltage_ranges1),
 787         regulator_desc_s2mps15_ldo(17, s2mps15_ldo_voltage_ranges2),
 788         regulator_desc_s2mps15_ldo(18, s2mps15_ldo_voltage_ranges1),
 789         regulator_desc_s2mps15_ldo(19, s2mps15_ldo_voltage_ranges2),
 790         regulator_desc_s2mps15_ldo(20, s2mps15_ldo_voltage_ranges1),
 791         regulator_desc_s2mps15_ldo(21, s2mps15_ldo_voltage_ranges2),
 792         regulator_desc_s2mps15_ldo(22, s2mps15_ldo_voltage_ranges3),
 793         regulator_desc_s2mps15_ldo(23, s2mps15_ldo_voltage_ranges1),
 794         regulator_desc_s2mps15_ldo(24, s2mps15_ldo_voltage_ranges2),
 795         regulator_desc_s2mps15_ldo(25, s2mps15_ldo_voltage_ranges2),
 796         regulator_desc_s2mps15_ldo(26, s2mps15_ldo_voltage_ranges3),
 797         regulator_desc_s2mps15_ldo(27, s2mps15_ldo_voltage_ranges1),
 798         regulator_desc_s2mps15_buck(1, s2mps15_buck_voltage_ranges1),
 799         regulator_desc_s2mps15_buck(2, s2mps15_buck_voltage_ranges1),
 800         regulator_desc_s2mps15_buck(3, s2mps15_buck_voltage_ranges1),
 801         regulator_desc_s2mps15_buck(4, s2mps15_buck_voltage_ranges1),
 802         regulator_desc_s2mps15_buck(5, s2mps15_buck_voltage_ranges1),
 803         regulator_desc_s2mps15_buck(6, s2mps15_buck_voltage_ranges1),
 804         regulator_desc_s2mps15_buck(7, s2mps15_buck_voltage_ranges1),
 805         regulator_desc_s2mps15_buck(8, s2mps15_buck_voltage_ranges2),
 806         regulator_desc_s2mps15_buck(9, s2mps15_buck_voltage_ranges2),
 807         regulator_desc_s2mps15_buck(10, s2mps15_buck_voltage_ranges2),
 808 };
 809
 810 static int s2mps14_pmic_enable_ext_control(struct s2mps11_info *s2mps11,
 811                 struct regulator_dev *rdev)
 812 {
 813         return regmap_update_bits(rdev->regmap, rdev->desc->enable_reg,
 814                         rdev->desc->enable_mask, S2MPS14_ENABLE_EXT_CONTROL);
 815 }
 816
 817 static void s2mps14_pmic_dt_parse_ext_control_gpio(struct platform_device *pdev,
 818                 struct of_regulator_match *rdata, struct s2mps11_info *s2mps11)
 819 {
 820         int *gpio = s2mps11->ext_control_gpio;
 821         unsigned int i;
 822         unsigned int valid_regulators[3] = { S2MPS14_LDO10, S2MPS14_LDO11,
 823                 S2MPS14_LDO12 };
 824
 825         for (i = 0; i < ARRAY_SIZE(valid_regulators); i++) {
 826                 unsigned int reg = valid_regulators[i];
 827
 828                 if (!rdata[reg].init_data || !rdata[reg].of_node)
 829                         continue;
 830
 831                 gpio[reg] = of_get_named_gpio(rdata[reg].of_node,
 832                                 "samsung,ext-control-gpios", 0);
 833                 if (gpio_is_valid(gpio[reg]))
 834                         dev_dbg(&pdev->dev, "Using GPIO %d for ext-control over %d/%s\n",
 835                                         gpio[reg], reg, rdata[reg].name);
 836         }
 837 }
 838
 839 static int s2mps11_pmic_dt_parse(struct platform_device *pdev,
 840                 struct of_regulator_match *rdata, struct s2mps11_info *s2mps11,
 841                 unsigned int rdev_num)
 842 {
 843         struct device_node *reg_np;
 844
 845         reg_np = of_get_child_by_name(pdev->dev.parent->of_node, "regulators");
 846         if (!reg_np) {
 847                 dev_err(&pdev->dev, "could not find regulators sub-node\n");
 848                 return -EINVAL;
 849         }
 850
 851         of_regulator_match(&pdev->dev, reg_np, rdata, rdev_num);
 852         if (s2mps11->dev_type == S2MPS14X)
 853                 s2mps14_pmic_dt_parse_ext_control_gpio(pdev, rdata, s2mps11);
 854
 855         of_node_put(reg_np);
 856
 857         return 0;
 858 }
 859
 860 static int s2mpu02_set_ramp_delay(struct regulator_dev *rdev, int ramp_delay)
 861 {
 862         unsigned int ramp_val, ramp_shift, ramp_reg;
 863
 864         switch (rdev_get_id(rdev)) {
 865         case S2MPU02_BUCK1:
 866                 ramp_shift = S2MPU02_BUCK1_RAMP_SHIFT;
 867                 break;
 868         case S2MPU02_BUCK2:
 869                 ramp_shift = S2MPU02_BUCK2_RAMP_SHIFT;
 870                 break;
 871         case S2MPU02_BUCK3:
 872                 ramp_shift = S2MPU02_BUCK3_RAMP_SHIFT;
 873                 break;
 874         case S2MPU02_BUCK4:
 875                 ramp_shift = S2MPU02_BUCK4_RAMP_SHIFT;
 876                 break;
 877         default:
 878                 return 0;
 879         }
 880         ramp_reg = S2MPU02_REG_RAMP1;
 881         ramp_val = get_ramp_delay(ramp_delay);
 882
 883         return regmap_update_bits(rdev->regmap, ramp_reg,
 884                                   S2MPU02_BUCK1234_RAMP_MASK << ramp_shift,
 885                                   ramp_val << ramp_shift);
 886 }
 887
 888 static struct regulator_ops s2mpu02_ldo_ops = {
 889         .list_voltage           = regulator_list_voltage_linear,
 890         .map_voltage            = regulator_map_voltage_linear,
 891         .is_enabled             = regulator_is_enabled_regmap,
 892         .enable                 = s2mps14_regulator_enable,
 893         .disable                = regulator_disable_regmap,
 894         .get_voltage_sel        = regulator_get_voltage_sel_regmap,
 895         .set_voltage_sel        = regulator_set_voltage_sel_regmap,
 896         .set_voltage_time_sel   = regulator_set_voltage_time_sel,
 897         .set_suspend_disable    = s2mps14_regulator_set_suspend_disable,
 898 };
 899
 900 static struct regulator_ops s2mpu02_buck_ops = {
 901         .list_voltage           = regulator_list_voltage_linear,
 902         .map_voltage            = regulator_map_voltage_linear,
 903         .is_enabled             = regulator_is_enabled_regmap,
 904         .enable                 = s2mps14_regulator_enable,
 905         .disable                = regulator_disable_regmap,
 906         .get_voltage_sel        = regulator_get_voltage_sel_regmap,
 907         .set_voltage_sel        = regulator_set_voltage_sel_regmap,
 908         .set_voltage_time_sel   = regulator_set_voltage_time_sel,
 909         .set_suspend_disable    = s2mps14_regulator_set_suspend_disable,
 910         .set_ramp_delay         = s2mpu02_set_ramp_delay,
 911 };
 912
 913 #define regulator_desc_s2mpu02_ldo1(num) {              \
 914         .name           = "LDO"#num,                    \
 915         .id             = S2MPU02_LDO##num,             \
 916         .ops            = &s2mpu02_ldo_ops,             \
 917         .type           = REGULATOR_VOLTAGE,            \
 918         .owner          = THIS_MODULE,                  \
 919         .min_uV         = S2MPU02_LDO_MIN_900MV,        \
 920         .uV_step        = S2MPU02_LDO_STEP_12_5MV,      \
 921         .linear_min_sel = S2MPU02_LDO_GROUP1_START_SEL, \
 922         .n_voltages     = S2MPU02_LDO_N_VOLTAGES,       \
 923         .vsel_reg       = S2MPU02_REG_L1CTRL,           \
 924         .vsel_mask      = S2MPU02_LDO_VSEL_MASK,        \
 925         .enable_reg     = S2MPU02_REG_L1CTRL,           \
 926         .enable_mask    = S2MPU02_ENABLE_MASK           \
 927 }
 928 #define regulator_desc_s2mpu02_ldo2(num) {              \
 929         .name           = "LDO"#num,                    \
 930         .id             = S2MPU02_LDO##num,             \
 931         .ops            = &s2mpu02_ldo_ops,             \
 932         .type           = REGULATOR_VOLTAGE,            \
 933         .owner          = THIS_MODULE,                  \
 934         .min_uV         = S2MPU02_LDO_MIN_1050MV,       \
 935         .uV_step        = S2MPU02_LDO_STEP_25MV,        \
 936         .linear_min_sel = S2MPU02_LDO_GROUP2_START_SEL, \
 937         .n_voltages     = S2MPU02_LDO_N_VOLTAGES,       \
 938         .vsel_reg       = S2MPU02_REG_L2CTRL1,          \
 939         .vsel_mask      = S2MPU02_LDO_VSEL_MASK,        \
 940         .enable_reg     = S2MPU02_REG_L2CTRL1,          \
 941         .enable_mask    = S2MPU02_ENABLE_MASK           \
 942 }
 943 #define regulator_desc_s2mpu02_ldo3(num) {              \
 944         .name           = "LDO"#num,                    \
 945         .id             = S2MPU02_LDO##num,             \
 946         .ops            = &s2mpu02_ldo_ops,             \
 947         .type           = REGULATOR_VOLTAGE,            \
 948         .owner          = THIS_MODULE,                  \
 949         .min_uV         = S2MPU02_LDO_MIN_900MV,        \
 950         .uV_step        = S2MPU02_LDO_STEP_12_5MV,      \
 951         .linear_min_sel = S2MPU02_LDO_GROUP1_START_SEL, \
 952         .n_voltages     = S2MPU02_LDO_N_VOLTAGES,       \
 953         .vsel_reg       = S2MPU02_REG_L3CTRL + num - 3, \
 954         .vsel_mask      = S2MPU02_LDO_VSEL_MASK,        \
 955         .enable_reg     = S2MPU02_REG_L3CTRL + num - 3, \
 956         .enable_mask    = S2MPU02_ENABLE_MASK           \
 957 }
 958 #define regulator_desc_s2mpu02_ldo4(num) {              \
 959         .name           = "LDO"#num,                    \
 960         .id             = S2MPU02_LDO##num,             \
 961         .ops            = &s2mpu02_ldo_ops,             \
 962         .type           = REGULATOR_VOLTAGE,            \
 963         .owner          = THIS_MODULE,                  \
 964         .min_uV         = S2MPU02_LDO_MIN_1050MV,       \
 965         .uV_step        = S2MPU02_LDO_STEP_25MV,        \
 966         .linear_min_sel = S2MPU02_LDO_GROUP2_START_SEL, \
 967         .n_voltages     = S2MPU02_LDO_N_VOLTAGES,       \
 968         .vsel_reg       = S2MPU02_REG_L3CTRL + num - 3, \
 969         .vsel_mask      = S2MPU02_LDO_VSEL_MASK,        \
 970         .enable_reg     = S2MPU02_REG_L3CTRL + num - 3, \
 971         .enable_mask    = S2MPU02_ENABLE_MASK           \
 972 }
 973 #define regulator_desc_s2mpu02_ldo5(num) {              \
 974         .name           = "LDO"#num,                    \
 975         .id             = S2MPU02_LDO##num,             \
 976         .ops            = &s2mpu02_ldo_ops,             \
 977         .type           = REGULATOR_VOLTAGE,            \
 978         .owner          = THIS_MODULE,                  \
 979         .min_uV         = S2MPU02_LDO_MIN_1600MV,       \
 980         .uV_step        = S2MPU02_LDO_STEP_50MV,        \
 981         .linear_min_sel = S2MPU02_LDO_GROUP3_START_SEL, \
 982         .n_voltages     = S2MPU02_LDO_N_VOLTAGES,       \
 983         .vsel_reg       = S2MPU02_REG_L3CTRL + num - 3, \
 984         .vsel_mask      = S2MPU02_LDO_VSEL_MASK,        \
 985         .enable_reg     = S2MPU02_REG_L3CTRL + num - 3, \
 986         .enable_mask    = S2MPU02_ENABLE_MASK           \
 987 }
 988
 989 #define regulator_desc_s2mpu02_buck1234(num) {                  \
 990         .name           = "BUCK"#num,                           \
 991         .id             = S2MPU02_BUCK##num,                    \
 992         .ops            = &s2mpu02_buck_ops,                    \
 993         .type           = REGULATOR_VOLTAGE,                    \
 994         .owner          = THIS_MODULE,                          \
 995         .min_uV         = S2MPU02_BUCK1234_MIN_600MV,           \
 996         .uV_step        = S2MPU02_BUCK1234_STEP_6_25MV,         \
 997         .n_voltages     = S2MPU02_BUCK_N_VOLTAGES,              \
 998         .linear_min_sel = S2MPU02_BUCK1234_START_SEL,           \
 999         .ramp_delay     = S2MPU02_BUCK_RAMP_DELAY,              \
1000         .vsel_reg       = S2MPU02_REG_B1CTRL2 + (num - 1) * 2,  \
1001         .vsel_mask      = S2MPU02_BUCK_VSEL_MASK,               \
1002         .enable_reg     = S2MPU02_REG_B1CTRL1 + (num - 1) * 2,  \
1003         .enable_mask    = S2MPU02_ENABLE_MASK                   \
1004 }
1005 #define regulator_desc_s2mpu02_buck5(num) {                     \
1006         .name           = "BUCK"#num,                           \
1007         .id             = S2MPU02_BUCK##num,                    \
1008         .ops            = &s2mpu02_ldo_ops,                     \
1009         .type           = REGULATOR_VOLTAGE,                    \
1010         .owner          = THIS_MODULE,                          \
1011         .min_uV         = S2MPU02_BUCK5_MIN_1081_25MV,          \
1012         .uV_step        = S2MPU02_BUCK5_STEP_6_25MV,            \
1013         .n_voltages     = S2MPU02_BUCK_N_VOLTAGES,              \
1014         .linear_min_sel = S2MPU02_BUCK5_START_SEL,              \
1015         .ramp_delay     = S2MPU02_BUCK_RAMP_DELAY,              \
1016         .vsel_reg       = S2MPU02_REG_B5CTRL2,                  \
1017         .vsel_mask      = S2MPU02_BUCK_VSEL_MASK,               \
1018         .enable_reg     = S2MPU02_REG_B5CTRL1,                  \
1019         .enable_mask    = S2MPU02_ENABLE_MASK                   \
1020 }
1021 #define regulator_desc_s2mpu02_buck6(num) {                     \
1022         .name           = "BUCK"#num,                           \
1023         .id             = S2MPU02_BUCK##num,                    \
1024         .ops            = &s2mpu02_ldo_ops,                     \
1025         .type           = REGULATOR_VOLTAGE,                    \
1026         .owner          = THIS_MODULE,                          \
1027         .min_uV         = S2MPU02_BUCK6_MIN_1700MV,             \
1028         .uV_step        = S2MPU02_BUCK6_STEP_2_50MV,            \
1029         .n_voltages     = S2MPU02_BUCK_N_VOLTAGES,              \
1030         .linear_min_sel = S2MPU02_BUCK6_START_SEL,              \
1031         .ramp_delay     = S2MPU02_BUCK_RAMP_DELAY,              \
1032         .vsel_reg       = S2MPU02_REG_B6CTRL2,                  \
1033         .vsel_mask      = S2MPU02_BUCK_VSEL_MASK,               \
1034         .enable_reg     = S2MPU02_REG_B6CTRL1,                  \
1035         .enable_mask    = S2MPU02_ENABLE_MASK                   \
1036 }
1037 #define regulator_desc_s2mpu02_buck7(num) {                     \
1038         .name           = "BUCK"#num,                           \
1039         .id             = S2MPU02_BUCK##num,                    \
1040         .ops            = &s2mpu02_ldo_ops,                     \
1041         .type           = REGULATOR_VOLTAGE,                    \
1042         .owner          = THIS_MODULE,                          \
1043         .min_uV         = S2MPU02_BUCK7_MIN_900MV,              \
1044         .uV_step        = S2MPU02_BUCK7_STEP_6_25MV,            \
1045         .n_voltages     = S2MPU02_BUCK_N_VOLTAGES,              \
1046         .linear_min_sel = S2MPU02_BUCK7_START_SEL,              \
1047         .ramp_delay     = S2MPU02_BUCK_RAMP_DELAY,              \
1048         .vsel_reg       = S2MPU02_REG_B7CTRL2,                  \
1049         .vsel_mask      = S2MPU02_BUCK_VSEL_MASK,               \
1050         .enable_reg     = S2MPU02_REG_B7CTRL1,                  \
1051         .enable_mask    = S2MPU02_ENABLE_MASK                   \
1052 }
1053
1054 static const struct regulator_desc s2mpu02_regulators[] = {
1055         regulator_desc_s2mpu02_ldo1(1),
1056         regulator_desc_s2mpu02_ldo2(2),
1057         regulator_desc_s2mpu02_ldo4(3),
1058         regulator_desc_s2mpu02_ldo5(4),
1059         regulator_desc_s2mpu02_ldo4(5),
1060         regulator_desc_s2mpu02_ldo3(6),
1061         regulator_desc_s2mpu02_ldo3(7),
1062         regulator_desc_s2mpu02_ldo4(8),
1063         regulator_desc_s2mpu02_ldo5(9),
1064         regulator_desc_s2mpu02_ldo3(10),
1065         regulator_desc_s2mpu02_ldo4(11),
1066         regulator_desc_s2mpu02_ldo5(12),
1067         regulator_desc_s2mpu02_ldo5(13),
1068         regulator_desc_s2mpu02_ldo5(14),
1069         regulator_desc_s2mpu02_ldo5(15),
1070         regulator_desc_s2mpu02_ldo5(16),
1071         regulator_desc_s2mpu02_ldo4(17),
1072         regulator_desc_s2mpu02_ldo5(18),
1073         regulator_desc_s2mpu02_ldo3(19),
1074         regulator_desc_s2mpu02_ldo4(20),
1075         regulator_desc_s2mpu02_ldo5(21),
1076         regulator_desc_s2mpu02_ldo5(22),
1077         regulator_desc_s2mpu02_ldo5(23),
1078         regulator_desc_s2mpu02_ldo4(24),
1079         regulator_desc_s2mpu02_ldo5(25),
1080         regulator_desc_s2mpu02_ldo4(26),
1081         regulator_desc_s2mpu02_ldo5(27),
1082         regulator_desc_s2mpu02_ldo5(28),
1083         regulator_desc_s2mpu02_buck1234(1),
1084         regulator_desc_s2mpu02_buck1234(2),
1085         regulator_desc_s2mpu02_buck1234(3),
1086         regulator_desc_s2mpu02_buck1234(4),
1087         regulator_desc_s2mpu02_buck5(5),
1088         regulator_desc_s2mpu02_buck6(6),
1089         regulator_desc_s2mpu02_buck7(7),
1090 };
1091
1092 static int s2mps11_pmic_probe(struct platform_device *pdev)
1093 {
1094         struct sec_pmic_dev *iodev = dev_get_drvdata(pdev->dev.parent);
1095         struct sec_platform_data *pdata = NULL;
1096         struct of_regulator_match *rdata = NULL;
1097         struct regulator_config config = { };
1098         struct s2mps11_info *s2mps11;
1099         unsigned int rdev_num = 0;
1100         int i, ret = 0;
1101         const struct regulator_desc *regulators;
1102
1103         s2mps11 = devm_kzalloc(&pdev->dev, sizeof(struct s2mps11_info),
1104                                 GFP_KERNEL);
1105         if (!s2mps11)
1106                 return -ENOMEM;
1107
1108         s2mps11->dev_type = platform_get_device_id(pdev)->driver_data;
1109         switch (s2mps11->dev_type) {
1110         case S2MPS11X:
1111                 rdev_num = ARRAY_SIZE(s2mps11_regulators);
1112                 regulators = s2mps11_regulators;
1113                 BUILD_BUG_ON(S2MPS_REGULATOR_MAX < ARRAY_SIZE(s2mps11_regulators));
1114                 break;
1115         case S2MPS13X:
1116                 rdev_num = ARRAY_SIZE(s2mps13_regulators);
1117                 regulators = s2mps13_regulators;
1118                 BUILD_BUG_ON(S2MPS_REGULATOR_MAX < ARRAY_SIZE(s2mps13_regulators));
1119                 break;
1120         case S2MPS14X:
1121                 rdev_num = ARRAY_SIZE(s2mps14_regulators);
1122                 regulators = s2mps14_regulators;
1123                 BUILD_BUG_ON(S2MPS_REGULATOR_MAX < ARRAY_SIZE(s2mps14_regulators));
1124                 break;
1125         case S2MPS15X:
1126                 rdev_num = ARRAY_SIZE(s2mps15_regulators);
1127                 regulators = s2mps15_regulators;
1128                 BUILD_BUG_ON(S2MPS_REGULATOR_MAX < ARRAY_SIZE(s2mps15_regulators));
1129                 break;
1130         case S2MPU02:
1131                 rdev_num = ARRAY_SIZE(s2mpu02_regulators);
1132                 regulators = s2mpu02_regulators;
1133                 BUILD_BUG_ON(S2MPS_REGULATOR_MAX < ARRAY_SIZE(s2mpu02_regulators));
1134                 break;
1135         default:
1136                 dev_err(&pdev->dev, "Invalid device type: %u\n",
1137                                     s2mps11->dev_type);
1138                 return -EINVAL;
1139         }
1140
1141         s2mps11->ext_control_gpio = devm_kmalloc(&pdev->dev,
1142                         sizeof(*s2mps11->ext_control_gpio) * rdev_num,
1143                         GFP_KERNEL);
1144         if (!s2mps11->ext_control_gpio)
1145                 return -ENOMEM;
1146         /*
1147          * 0 is a valid GPIO so initialize all GPIO-s to negative value
1148          * to indicate that external control won't be used for this regulator.
1149          */
1150         for (i = 0; i < rdev_num; i++)
1151                 s2mps11->ext_control_gpio[i] = -EINVAL;
1152
1153         if (!iodev->dev->of_node) {
1154                 if (iodev->pdata) {
1155                         pdata = iodev->pdata;
1156                         goto common_reg;
1157                 } else {
1158                         dev_err(pdev->dev.parent,
1159                                 "Platform data or DT node not supplied\n");
1160                         return -ENODEV;
1161                 }
1162         }
1163
1164         rdata = kzalloc(sizeof(*rdata) * rdev_num, GFP_KERNEL);
1165         if (!rdata)
1166                 return -ENOMEM;
1167
1168         for (i = 0; i < rdev_num; i++)
1169                 rdata[i].name = regulators[i].name;
1170
1171         ret = s2mps11_pmic_dt_parse(pdev, rdata, s2mps11, rdev_num);
1172         if (ret)
1173                 goto out;
1174
1175 common_reg:
1176         platform_set_drvdata(pdev, s2mps11);
1177
1178         config.dev = &pdev->dev;
1179         config.regmap = iodev->regmap_pmic;
1180         config.driver_data = s2mps11;
1181         config.ena_gpio_flags = GPIOF_OUT_INIT_HIGH;
1182         config.ena_gpio_initialized = true;
1183         for (i = 0; i < rdev_num; i++) {
1184                 struct regulator_dev *regulator;
1185
1186                 if (pdata) {
1187                         config.init_data = pdata->regulators[i].initdata;
1188                         config.of_node = pdata->regulators[i].reg_node;
1189                 } else {
1190                         config.init_data = rdata[i].init_data;
1191                         config.of_node = rdata[i].of_node;
1192                 }
1193                 config.ena_gpio = s2mps11->ext_control_gpio[i];
1194
1195                 regulator = devm_regulator_register(&pdev->dev,
1196                                                 &regulators[i], &config);
1197                 if (IS_ERR(regulator)) {
1198                         ret = PTR_ERR(regulator);
1199                         dev_err(&pdev->dev, "regulator init failed for %d\n",
1200                                 i);
1201                         goto out;
1202                 }
1203
1204                 if (gpio_is_valid(s2mps11->ext_control_gpio[i])) {
1205                         ret = s2mps14_pmic_enable_ext_control(s2mps11,
1206                                         regulator);
1207                         if (ret < 0) {
1208                                 dev_err(&pdev->dev,
1209                                                 "failed to enable GPIO control over %s: %d\n",
1210                                                 regulator->desc->name, ret);
1211                                 goto out;
1212                         }
1213                 }
1214         }
1215
1216 out:
1217         kfree(rdata);
1218
1219         return ret;
1220 }
1221
1222 static const struct platform_device_id s2mps11_pmic_id[] = {
1223         { "s2mps11-regulator", S2MPS11X},
1224         { "s2mps13-regulator", S2MPS13X},
1225         { "s2mps14-regulator", S2MPS14X},
1226         { "s2mps15-regulator", S2MPS15X},
1227         { "s2mpu02-regulator", S2MPU02},
1228         { },
1229 };
1230 MODULE_DEVICE_TABLE(platform, s2mps11_pmic_id);
1231
1232 static struct platform_driver s2mps11_pmic_driver = {
1233         .driver = {
1234                 .name = "s2mps11-pmic",
1235         },
1236         .probe = s2mps11_pmic_probe,
1237         .id_table = s2mps11_pmic_id,
1238 };
1239
1240 static int __init s2mps11_pmic_init(void)
1241 {
1242         return platform_driver_register(&s2mps11_pmic_driver);
1243 }
1244 subsys_initcall(s2mps11_pmic_init);
1245
1246 static void __exit s2mps11_pmic_exit(void)
1247 {
1248         platform_driver_unregister(&s2mps11_pmic_driver);
1249 }
1250 module_exit(s2mps11_pmic_exit);
1251
1252 /* Module information */
1253 MODULE_AUTHOR("Sangbeom Kim <sbkim73@samsung.com>");
1254 MODULE_DESCRIPTION("SAMSUNG S2MPS11/S2MPS14/S2MPS15/S2MPU02 Regulator Driver");
1255 MODULE_LICENSE("GPL");