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/s2mpu02.h>
  36
  37 struct s2mps11_info {
  38         unsigned int rdev_num;
  39         int ramp_delay2;
  40         int ramp_delay34;
  41         int ramp_delay5;
  42         int ramp_delay16;
  43         int ramp_delay7810;
  44         int ramp_delay9;
  45
  46         enum sec_device_type dev_type;
  47
  48         /*
  49          * One bit for each S2MPS13/S2MPS14/S2MPU02 regulator whether
  50          * the suspend mode was enabled.
  51          */
  52         unsigned long long s2mps14_suspend_state:50;
  53
  54         /* Array of size rdev_num with GPIO-s for external sleep control */
  55         int *ext_control_gpio;
  56 };
  57
  58 static int get_ramp_delay(int ramp_delay)
  59 {
  60         unsigned char cnt = 0;
  61
  62         ramp_delay /= 6250;
  63
  64         while (true) {
  65                 ramp_delay = ramp_delay >> 1;
  66                 if (ramp_delay == 0)
  67                         break;
  68                 cnt++;
  69         }
  70
  71         if (cnt > 3)
  72                 cnt = 3;
  73
  74         return cnt;
  75 }
  76
  77 static int s2mps11_regulator_set_voltage_time_sel(struct regulator_dev *rdev,
  78                                    unsigned int old_selector,
  79                                    unsigned int new_selector)
  80 {
  81         struct s2mps11_info *s2mps11 = rdev_get_drvdata(rdev);
  82         unsigned int ramp_delay = 0;
  83         int old_volt, new_volt;
  84
  85         switch (rdev_get_id(rdev)) {
  86         case S2MPS11_BUCK2:
  87                 ramp_delay = s2mps11->ramp_delay2;
  88                 break;
  89         case S2MPS11_BUCK3:
  90         case S2MPS11_BUCK4:
  91                 ramp_delay = s2mps11->ramp_delay34;
  92                 break;
  93         case S2MPS11_BUCK5:
  94                 ramp_delay = s2mps11->ramp_delay5;
  95                 break;
  96         case S2MPS11_BUCK6:
  97         case S2MPS11_BUCK1:
  98                 ramp_delay = s2mps11->ramp_delay16;
  99                 break;
 100         case S2MPS11_BUCK7:
 101         case S2MPS11_BUCK8:
 102         case S2MPS11_BUCK10:
 103                 ramp_delay = s2mps11->ramp_delay7810;
 104                 break;
 105         case S2MPS11_BUCK9:
 106                 ramp_delay = s2mps11->ramp_delay9;
 107         }
 108
 109         if (ramp_delay == 0)
 110                 ramp_delay = rdev->desc->ramp_delay;
 111
 112         old_volt = rdev->desc->min_uV + (rdev->desc->uV_step * old_selector);
 113         new_volt = rdev->desc->min_uV + (rdev->desc->uV_step * new_selector);
 114
 115         return DIV_ROUND_UP(abs(new_volt - old_volt), ramp_delay);
 116 }
 117
 118 static int s2mps11_set_ramp_delay(struct regulator_dev *rdev, int ramp_delay)
 119 {
 120         struct s2mps11_info *s2mps11 = rdev_get_drvdata(rdev);
 121         unsigned int ramp_val, ramp_shift, ramp_reg = S2MPS11_REG_RAMP_BUCK;
 122         unsigned int ramp_enable = 1, enable_shift = 0;
 123         int ret;
 124
 125         switch (rdev_get_id(rdev)) {
 126         case S2MPS11_BUCK1:
 127                 if (ramp_delay > s2mps11->ramp_delay16)
 128                         s2mps11->ramp_delay16 = ramp_delay;
 129                 else
 130                         ramp_delay = s2mps11->ramp_delay16;
 131
 132                 ramp_shift = S2MPS11_BUCK16_RAMP_SHIFT;
 133                 break;
 134         case S2MPS11_BUCK2:
 135                 enable_shift = S2MPS11_BUCK2_RAMP_EN_SHIFT;
 136                 if (!ramp_delay) {
 137                         ramp_enable = 0;
 138                         break;
 139                 }
 140
 141                 s2mps11->ramp_delay2 = ramp_delay;
 142                 ramp_shift = S2MPS11_BUCK2_RAMP_SHIFT;
 143                 ramp_reg = S2MPS11_REG_RAMP;
 144                 break;
 145         case S2MPS11_BUCK3:
 146                 enable_shift = S2MPS11_BUCK3_RAMP_EN_SHIFT;
 147                 if (!ramp_delay) {
 148                         ramp_enable = 0;
 149                         break;
 150                 }
 151
 152                 if (ramp_delay > s2mps11->ramp_delay34)
 153                         s2mps11->ramp_delay34 = ramp_delay;
 154                 else
 155                         ramp_delay = s2mps11->ramp_delay34;
 156
 157                 ramp_shift = S2MPS11_BUCK34_RAMP_SHIFT;
 158                 ramp_reg = S2MPS11_REG_RAMP;
 159                 break;
 160         case S2MPS11_BUCK4:
 161                 enable_shift = S2MPS11_BUCK4_RAMP_EN_SHIFT;
 162                 if (!ramp_delay) {
 163                         ramp_enable = 0;
 164                         break;
 165                 }
 166
 167                 if (ramp_delay > s2mps11->ramp_delay34)
 168                         s2mps11->ramp_delay34 = ramp_delay;
 169                 else
 170                         ramp_delay = s2mps11->ramp_delay34;
 171
 172                 ramp_shift = S2MPS11_BUCK34_RAMP_SHIFT;
 173                 ramp_reg = S2MPS11_REG_RAMP;
 174                 break;
 175         case S2MPS11_BUCK5:
 176                 s2mps11->ramp_delay5 = ramp_delay;
 177                 ramp_shift = S2MPS11_BUCK5_RAMP_SHIFT;
 178                 break;
 179         case S2MPS11_BUCK6:
 180                 enable_shift = S2MPS11_BUCK6_RAMP_EN_SHIFT;
 181                 if (!ramp_delay) {
 182                         ramp_enable = 0;
 183                         break;
 184                 }
 185
 186                 if (ramp_delay > s2mps11->ramp_delay16)
 187                         s2mps11->ramp_delay16 = ramp_delay;
 188                 else
 189                         ramp_delay = s2mps11->ramp_delay16;
 190
 191                 ramp_shift = S2MPS11_BUCK16_RAMP_SHIFT;
 192                 break;
 193         case S2MPS11_BUCK7:
 194         case S2MPS11_BUCK8:
 195         case S2MPS11_BUCK10:
 196                 if (ramp_delay > s2mps11->ramp_delay7810)
 197                         s2mps11->ramp_delay7810 = ramp_delay;
 198                 else
 199                         ramp_delay = s2mps11->ramp_delay7810;
 200
 201                 ramp_shift = S2MPS11_BUCK7810_RAMP_SHIFT;
 202                 break;
 203         case S2MPS11_BUCK9:
 204                 s2mps11->ramp_delay9 = ramp_delay;
 205                 ramp_shift = S2MPS11_BUCK9_RAMP_SHIFT;
 206                 break;
 207         default:
 208                 return 0;
 209         }
 210
 211         if (!ramp_enable)
 212                 goto ramp_disable;
 213
 214         /* Ramp delay can be enabled/disabled only for buck[2346] */
 215         if ((rdev_get_id(rdev) >= S2MPS11_BUCK2 &&
 216                         rdev_get_id(rdev) <= S2MPS11_BUCK4) ||
 217                         rdev_get_id(rdev) == S2MPS11_BUCK6)  {
 218                 ret = regmap_update_bits(rdev->regmap, S2MPS11_REG_RAMP,
 219                                          1 << enable_shift, 1 << enable_shift);
 220                 if (ret) {
 221                         dev_err(&rdev->dev, "failed to enable ramp rate\n");
 222                         return ret;
 223                 }
 224         }
 225
 226         ramp_val = get_ramp_delay(ramp_delay);
 227
 228         return regmap_update_bits(rdev->regmap, ramp_reg, 0x3 << ramp_shift,
 229                                   ramp_val << ramp_shift);
 230
 231 ramp_disable:
 232         return regmap_update_bits(rdev->regmap, S2MPS11_REG_RAMP,
 233                                   1 << enable_shift, 0);
 234 }
 235
 236 static struct regulator_ops s2mps11_ldo_ops = {
 237         .list_voltage           = regulator_list_voltage_linear,
 238         .map_voltage            = regulator_map_voltage_linear,
 239         .is_enabled             = regulator_is_enabled_regmap,
 240         .enable                 = regulator_enable_regmap,
 241         .disable                = regulator_disable_regmap,
 242         .get_voltage_sel        = regulator_get_voltage_sel_regmap,
 243         .set_voltage_sel        = regulator_set_voltage_sel_regmap,
 244         .set_voltage_time_sel   = regulator_set_voltage_time_sel,
 245 };
 246
 247 static struct regulator_ops s2mps11_buck_ops = {
 248         .list_voltage           = regulator_list_voltage_linear,
 249         .map_voltage            = regulator_map_voltage_linear,
 250         .is_enabled             = regulator_is_enabled_regmap,
 251         .enable                 = regulator_enable_regmap,
 252         .disable                = regulator_disable_regmap,
 253         .get_voltage_sel        = regulator_get_voltage_sel_regmap,
 254         .set_voltage_sel        = regulator_set_voltage_sel_regmap,
 255         .set_voltage_time_sel   = s2mps11_regulator_set_voltage_time_sel,
 256         .set_ramp_delay         = s2mps11_set_ramp_delay,
 257 };
 258
 259 #define regulator_desc_s2mps11_ldo(num, step) {         \
 260         .name           = "LDO"#num,                    \
 261         .id             = S2MPS11_LDO##num,             \
 262         .ops            = &s2mps11_ldo_ops,             \
 263         .type           = REGULATOR_VOLTAGE,            \
 264         .owner          = THIS_MODULE,                  \
 265         .min_uV         = MIN_800_MV,                   \
 266         .uV_step        = step,                         \
 267         .n_voltages     = S2MPS11_LDO_N_VOLTAGES,       \
 268         .vsel_reg       = S2MPS11_REG_L1CTRL + num - 1, \
 269         .vsel_mask      = S2MPS11_LDO_VSEL_MASK,        \
 270         .enable_reg     = S2MPS11_REG_L1CTRL + num - 1, \
 271         .enable_mask    = S2MPS11_ENABLE_MASK           \
 272 }
 273
 274 #define regulator_desc_s2mps11_buck1_4(num) {                   \
 275         .name           = "BUCK"#num,                           \
 276         .id             = S2MPS11_BUCK##num,                    \
 277         .ops            = &s2mps11_buck_ops,                    \
 278         .type           = REGULATOR_VOLTAGE,                    \
 279         .owner          = THIS_MODULE,                          \
 280         .min_uV         = MIN_600_MV,                           \
 281         .uV_step        = STEP_6_25_MV,                         \
 282         .n_voltages     = S2MPS11_BUCK_N_VOLTAGES,              \
 283         .ramp_delay     = S2MPS11_RAMP_DELAY,                   \
 284         .vsel_reg       = S2MPS11_REG_B1CTRL2 + (num - 1) * 2,  \
 285         .vsel_mask      = S2MPS11_BUCK_VSEL_MASK,               \
 286         .enable_reg     = S2MPS11_REG_B1CTRL1 + (num - 1) * 2,  \
 287         .enable_mask    = S2MPS11_ENABLE_MASK                   \
 288 }
 289
 290 #define regulator_desc_s2mps11_buck5 {                          \
 291         .name           = "BUCK5",                              \
 292         .id             = S2MPS11_BUCK5,                        \
 293         .ops            = &s2mps11_buck_ops,                    \
 294         .type           = REGULATOR_VOLTAGE,                    \
 295         .owner          = THIS_MODULE,                          \
 296         .min_uV         = MIN_600_MV,                           \
 297         .uV_step        = STEP_6_25_MV,                         \
 298         .n_voltages     = S2MPS11_BUCK_N_VOLTAGES,              \
 299         .ramp_delay     = S2MPS11_RAMP_DELAY,                   \
 300         .vsel_reg       = S2MPS11_REG_B5CTRL2,                  \
 301         .vsel_mask      = S2MPS11_BUCK_VSEL_MASK,               \
 302         .enable_reg     = S2MPS11_REG_B5CTRL1,                  \
 303         .enable_mask    = S2MPS11_ENABLE_MASK                   \
 304 }
 305
 306 #define regulator_desc_s2mps11_buck6_10(num, min, step) {       \
 307         .name           = "BUCK"#num,                           \
 308         .id             = S2MPS11_BUCK##num,                    \
 309         .ops            = &s2mps11_buck_ops,                    \
 310         .type           = REGULATOR_VOLTAGE,                    \
 311         .owner          = THIS_MODULE,                          \
 312         .min_uV         = min,                                  \
 313         .uV_step        = step,                                 \
 314         .n_voltages     = S2MPS11_BUCK_N_VOLTAGES,              \
 315         .ramp_delay     = S2MPS11_RAMP_DELAY,                   \
 316         .vsel_reg       = S2MPS11_REG_B6CTRL2 + (num - 6) * 2,  \
 317         .vsel_mask      = S2MPS11_BUCK_VSEL_MASK,               \
 318         .enable_reg     = S2MPS11_REG_B6CTRL1 + (num - 6) * 2,  \
 319         .enable_mask    = S2MPS11_ENABLE_MASK                   \
 320 }
 321
 322 static const struct regulator_desc s2mps11_regulators[] = {
 323         regulator_desc_s2mps11_ldo(1, STEP_25_MV),
 324         regulator_desc_s2mps11_ldo(2, STEP_50_MV),
 325         regulator_desc_s2mps11_ldo(3, STEP_50_MV),
 326         regulator_desc_s2mps11_ldo(4, STEP_50_MV),
 327         regulator_desc_s2mps11_ldo(5, STEP_50_MV),
 328         regulator_desc_s2mps11_ldo(6, STEP_25_MV),
 329         regulator_desc_s2mps11_ldo(7, STEP_50_MV),
 330         regulator_desc_s2mps11_ldo(8, STEP_50_MV),
 331         regulator_desc_s2mps11_ldo(9, STEP_50_MV),
 332         regulator_desc_s2mps11_ldo(10, STEP_50_MV),
 333         regulator_desc_s2mps11_ldo(11, STEP_25_MV),
 334         regulator_desc_s2mps11_ldo(12, STEP_50_MV),
 335         regulator_desc_s2mps11_ldo(13, STEP_50_MV),
 336         regulator_desc_s2mps11_ldo(14, STEP_50_MV),
 337         regulator_desc_s2mps11_ldo(15, STEP_50_MV),
 338         regulator_desc_s2mps11_ldo(16, STEP_50_MV),
 339         regulator_desc_s2mps11_ldo(17, STEP_50_MV),
 340         regulator_desc_s2mps11_ldo(18, STEP_50_MV),
 341         regulator_desc_s2mps11_ldo(19, STEP_50_MV),
 342         regulator_desc_s2mps11_ldo(20, STEP_50_MV),
 343         regulator_desc_s2mps11_ldo(21, STEP_50_MV),
 344         regulator_desc_s2mps11_ldo(22, STEP_25_MV),
 345         regulator_desc_s2mps11_ldo(23, STEP_25_MV),
 346         regulator_desc_s2mps11_ldo(24, STEP_50_MV),
 347         regulator_desc_s2mps11_ldo(25, STEP_50_MV),
 348         regulator_desc_s2mps11_ldo(26, STEP_50_MV),
 349         regulator_desc_s2mps11_ldo(27, STEP_25_MV),
 350         regulator_desc_s2mps11_ldo(28, STEP_50_MV),
 351         regulator_desc_s2mps11_ldo(29, STEP_50_MV),
 352         regulator_desc_s2mps11_ldo(30, STEP_50_MV),
 353         regulator_desc_s2mps11_ldo(31, STEP_50_MV),
 354         regulator_desc_s2mps11_ldo(32, STEP_50_MV),
 355         regulator_desc_s2mps11_ldo(33, STEP_50_MV),
 356         regulator_desc_s2mps11_ldo(34, STEP_50_MV),
 357         regulator_desc_s2mps11_ldo(35, STEP_50_MV),
 358         regulator_desc_s2mps11_ldo(36, STEP_50_MV),
 359         regulator_desc_s2mps11_ldo(37, STEP_50_MV),
 360         regulator_desc_s2mps11_ldo(38, STEP_50_MV),
 361         regulator_desc_s2mps11_buck1_4(1),
 362         regulator_desc_s2mps11_buck1_4(2),
 363         regulator_desc_s2mps11_buck1_4(3),
 364         regulator_desc_s2mps11_buck1_4(4),
 365         regulator_desc_s2mps11_buck5,
 366         regulator_desc_s2mps11_buck6_10(6, MIN_600_MV, STEP_6_25_MV),
 367         regulator_desc_s2mps11_buck6_10(7, MIN_600_MV, STEP_6_25_MV),
 368         regulator_desc_s2mps11_buck6_10(8, MIN_600_MV, STEP_6_25_MV),
 369         regulator_desc_s2mps11_buck6_10(9, MIN_3000_MV, STEP_25_MV),
 370         regulator_desc_s2mps11_buck6_10(10, MIN_750_MV, STEP_12_5_MV),
 371 };
 372
 373 static struct regulator_ops s2mps14_reg_ops;
 374
 375 #define regulator_desc_s2mps13_ldo(num, min, step, min_sel) {   \
 376         .name           = "LDO"#num,                            \
 377         .id             = S2MPS13_LDO##num,                     \
 378         .ops            = &s2mps14_reg_ops,                     \
 379         .type           = REGULATOR_VOLTAGE,                    \
 380         .owner          = THIS_MODULE,                          \
 381         .min_uV         = min,                                  \
 382         .uV_step        = step,                                 \
 383         .linear_min_sel = min_sel,                              \
 384         .n_voltages     = S2MPS14_LDO_N_VOLTAGES,               \
 385         .vsel_reg       = S2MPS13_REG_L1CTRL + num - 1,         \
 386         .vsel_mask      = S2MPS14_LDO_VSEL_MASK,                \
 387         .enable_reg     = S2MPS13_REG_L1CTRL + num - 1,         \
 388         .enable_mask    = S2MPS14_ENABLE_MASK                   \
 389 }
 390
 391 #define regulator_desc_s2mps13_buck(num, min, step, min_sel) {  \
 392         .name           = "BUCK"#num,                           \
 393         .id             = S2MPS13_BUCK##num,                    \
 394         .ops            = &s2mps14_reg_ops,                     \
 395         .type           = REGULATOR_VOLTAGE,                    \
 396         .owner          = THIS_MODULE,                          \
 397         .min_uV         = min,                                  \
 398         .uV_step        = step,                                 \
 399         .linear_min_sel = min_sel,                              \
 400         .n_voltages     = S2MPS14_BUCK_N_VOLTAGES,              \
 401         .ramp_delay     = S2MPS13_BUCK_RAMP_DELAY,              \
 402         .vsel_reg       = S2MPS13_REG_B1OUT + (num - 1) * 2,    \
 403         .vsel_mask      = S2MPS14_BUCK_VSEL_MASK,               \
 404         .enable_reg     = S2MPS13_REG_B1CTRL + (num - 1) * 2,   \
 405         .enable_mask    = S2MPS14_ENABLE_MASK                   \
 406 }
 407
 408 static const struct regulator_desc s2mps13_regulators[] = {
 409         regulator_desc_s2mps13_ldo(1,  MIN_800_MV,  STEP_12_5_MV, 0x00),
 410         regulator_desc_s2mps13_ldo(2,  MIN_1400_MV, STEP_50_MV,   0x0C),
 411         regulator_desc_s2mps13_ldo(3,  MIN_1000_MV, STEP_25_MV,   0x08),
 412         regulator_desc_s2mps13_ldo(4,  MIN_800_MV,  STEP_12_5_MV, 0x00),
 413         regulator_desc_s2mps13_ldo(5,  MIN_800_MV,  STEP_12_5_MV, 0x00),
 414         regulator_desc_s2mps13_ldo(6,  MIN_800_MV,  STEP_12_5_MV, 0x00),
 415         regulator_desc_s2mps13_ldo(7,  MIN_1000_MV, STEP_25_MV,   0x08),
 416         regulator_desc_s2mps13_ldo(8,  MIN_1000_MV, STEP_25_MV,   0x08),
 417         regulator_desc_s2mps13_ldo(9,  MIN_1000_MV, STEP_25_MV,   0x08),
 418         regulator_desc_s2mps13_ldo(10, MIN_1400_MV, STEP_50_MV,   0x0C),
 419         regulator_desc_s2mps13_ldo(11, MIN_800_MV,  STEP_25_MV,   0x10),
 420         regulator_desc_s2mps13_ldo(12, MIN_800_MV,  STEP_25_MV,   0x10),
 421         regulator_desc_s2mps13_ldo(13, MIN_800_MV,  STEP_25_MV,   0x10),
 422         regulator_desc_s2mps13_ldo(14, MIN_800_MV,  STEP_12_5_MV, 0x00),
 423         regulator_desc_s2mps13_ldo(15, MIN_800_MV,  STEP_12_5_MV, 0x00),
 424         regulator_desc_s2mps13_ldo(16, MIN_1400_MV, STEP_50_MV,   0x0C),
 425         regulator_desc_s2mps13_ldo(17, MIN_1400_MV, STEP_50_MV,   0x0C),
 426         regulator_desc_s2mps13_ldo(18, MIN_1000_MV, STEP_25_MV,   0x08),
 427         regulator_desc_s2mps13_ldo(19, MIN_1000_MV, STEP_25_MV,   0x08),
 428         regulator_desc_s2mps13_ldo(20, MIN_1400_MV, STEP_50_MV,   0x0C),
 429         regulator_desc_s2mps13_ldo(21, MIN_1000_MV, STEP_25_MV,   0x08),
 430         regulator_desc_s2mps13_ldo(22, MIN_1000_MV, STEP_25_MV,   0x08),
 431         regulator_desc_s2mps13_ldo(23, MIN_800_MV,  STEP_12_5_MV, 0x00),
 432         regulator_desc_s2mps13_ldo(24, MIN_800_MV,  STEP_12_5_MV, 0x00),
 433         regulator_desc_s2mps13_ldo(25, MIN_1400_MV, STEP_50_MV,   0x0C),
 434         regulator_desc_s2mps13_ldo(26, MIN_1400_MV, STEP_50_MV,   0x0C),
 435         regulator_desc_s2mps13_ldo(27, MIN_1400_MV, STEP_50_MV,   0x0C),
 436         regulator_desc_s2mps13_ldo(28, MIN_1000_MV, STEP_25_MV,   0x08),
 437         regulator_desc_s2mps13_ldo(29, MIN_1400_MV, STEP_50_MV,   0x0C),
 438         regulator_desc_s2mps13_ldo(30, MIN_1400_MV, STEP_50_MV,   0x0C),
 439         regulator_desc_s2mps13_ldo(31, MIN_1000_MV, STEP_25_MV,   0x08),
 440         regulator_desc_s2mps13_ldo(32, MIN_1000_MV, STEP_25_MV,   0x08),
 441         regulator_desc_s2mps13_ldo(33, MIN_1400_MV, STEP_50_MV,   0x0C),
 442         regulator_desc_s2mps13_ldo(34, MIN_1000_MV, STEP_25_MV,   0x08),
 443         regulator_desc_s2mps13_ldo(35, MIN_1400_MV, STEP_50_MV,   0x0C),
 444         regulator_desc_s2mps13_ldo(36, MIN_800_MV,  STEP_12_5_MV, 0x00),
 445         regulator_desc_s2mps13_ldo(37, MIN_1000_MV, STEP_25_MV,   0x08),
 446         regulator_desc_s2mps13_ldo(38, MIN_1400_MV, STEP_50_MV,   0x0C),
 447         regulator_desc_s2mps13_ldo(39, MIN_1000_MV, STEP_25_MV,   0x08),
 448         regulator_desc_s2mps13_ldo(40, MIN_1400_MV, STEP_50_MV,   0x0C),
 449         regulator_desc_s2mps13_buck(1,  MIN_500_MV,  STEP_6_25_MV, 0x10),
 450         regulator_desc_s2mps13_buck(2,  MIN_500_MV,  STEP_6_25_MV, 0x10),
 451         regulator_desc_s2mps13_buck(3,  MIN_500_MV,  STEP_6_25_MV, 0x10),
 452         regulator_desc_s2mps13_buck(4,  MIN_500_MV,  STEP_6_25_MV, 0x10),
 453         regulator_desc_s2mps13_buck(5,  MIN_500_MV,  STEP_6_25_MV, 0x10),
 454         regulator_desc_s2mps13_buck(6,  MIN_500_MV,  STEP_6_25_MV, 0x10),
 455         regulator_desc_s2mps13_buck(7,  MIN_500_MV,  STEP_6_25_MV, 0x10),
 456         regulator_desc_s2mps13_buck(8,  MIN_1000_MV, STEP_12_5_MV, 0x20),
 457         regulator_desc_s2mps13_buck(9,  MIN_1000_MV, STEP_12_5_MV, 0x20),
 458         regulator_desc_s2mps13_buck(10, MIN_500_MV,  STEP_6_25_MV, 0x10),
 459 };
 460
 461 static int s2mps14_regulator_enable(struct regulator_dev *rdev)
 462 {
 463         struct s2mps11_info *s2mps11 = rdev_get_drvdata(rdev);
 464         unsigned int val;
 465
 466         switch (s2mps11->dev_type) {
 467         case S2MPS13X:
 468         case S2MPS14X:
 469                 if (s2mps11->s2mps14_suspend_state & (1 << rdev_get_id(rdev)))
 470                         val = S2MPS14_ENABLE_SUSPEND;
 471                 else if (gpio_is_valid(s2mps11->ext_control_gpio[rdev_get_id(rdev)]))
 472                         val = S2MPS14_ENABLE_EXT_CONTROL;
 473                 else
 474                         val = rdev->desc->enable_mask;
 475                 break;
 476         case S2MPU02:
 477                 if (s2mps11->s2mps14_suspend_state & (1 << rdev_get_id(rdev)))
 478                         val = S2MPU02_ENABLE_SUSPEND;
 479                 else
 480                         val = rdev->desc->enable_mask;
 481                 break;
 482         default:
 483                 return -EINVAL;
 484         };
 485
 486         return regmap_update_bits(rdev->regmap, rdev->desc->enable_reg,
 487                         rdev->desc->enable_mask, val);
 488 }
 489
 490 static int s2mps14_regulator_set_suspend_disable(struct regulator_dev *rdev)
 491 {
 492         int ret;
 493         unsigned int val, state;
 494         struct s2mps11_info *s2mps11 = rdev_get_drvdata(rdev);
 495         int rdev_id = rdev_get_id(rdev);
 496
 497         /* Below LDO should be always on or does not support suspend mode. */
 498         switch (s2mps11->dev_type) {
 499         case S2MPS13X:
 500         case S2MPS14X:
 501                 switch (rdev_id) {
 502                 case S2MPS14_LDO3:
 503                         return 0;
 504                 default:
 505                         state = S2MPS14_ENABLE_SUSPEND;
 506                         break;
 507                 };
 508                 break;
 509         case S2MPU02:
 510                 switch (rdev_id) {
 511                 case S2MPU02_LDO13:
 512                 case S2MPU02_LDO14:
 513                 case S2MPU02_LDO15:
 514                 case S2MPU02_LDO17:
 515                 case S2MPU02_BUCK7:
 516                         state = S2MPU02_DISABLE_SUSPEND;
 517                         break;
 518                 default:
 519                         state = S2MPU02_ENABLE_SUSPEND;
 520                         break;
 521                 };
 522                 break;
 523         default:
 524                 return -EINVAL;
 525         };
 526
 527         ret = regmap_read(rdev->regmap, rdev->desc->enable_reg, &val);
 528         if (ret < 0)
 529                 return ret;
 530
 531         s2mps11->s2mps14_suspend_state |= (1 << rdev_get_id(rdev));
 532         /*
 533          * Don't enable suspend mode if regulator is already disabled because
 534          * this would effectively for a short time turn on the regulator after
 535          * resuming.
 536          * However we still want to toggle the suspend_state bit for regulator
 537          * in case if it got enabled before suspending the system.
 538          */
 539         if (!(val & rdev->desc->enable_mask))
 540                 return 0;
 541
 542         return regmap_update_bits(rdev->regmap, rdev->desc->enable_reg,
 543                         rdev->desc->enable_mask, state);
 544 }
 545
 546 static struct regulator_ops s2mps14_reg_ops = {
 547         .list_voltage           = regulator_list_voltage_linear,
 548         .map_voltage            = regulator_map_voltage_linear,
 549         .is_enabled             = regulator_is_enabled_regmap,
 550         .enable                 = s2mps14_regulator_enable,
 551         .disable                = regulator_disable_regmap,
 552         .get_voltage_sel        = regulator_get_voltage_sel_regmap,
 553         .set_voltage_sel        = regulator_set_voltage_sel_regmap,
 554         .set_voltage_time_sel   = regulator_set_voltage_time_sel,
 555         .set_suspend_disable    = s2mps14_regulator_set_suspend_disable,
 556 };
 557
 558 #define regulator_desc_s2mps14_ldo(num, min, step) {    \
 559         .name           = "LDO"#num,                    \
 560         .id             = S2MPS14_LDO##num,             \
 561         .ops            = &s2mps14_reg_ops,             \
 562         .type           = REGULATOR_VOLTAGE,            \
 563         .owner          = THIS_MODULE,                  \
 564         .min_uV         = min,                          \
 565         .uV_step        = step,                         \
 566         .n_voltages     = S2MPS14_LDO_N_VOLTAGES,       \
 567         .vsel_reg       = S2MPS14_REG_L1CTRL + num - 1, \
 568         .vsel_mask      = S2MPS14_LDO_VSEL_MASK,        \
 569         .enable_reg     = S2MPS14_REG_L1CTRL + num - 1, \
 570         .enable_mask    = S2MPS14_ENABLE_MASK           \
 571 }
 572
 573 #define regulator_desc_s2mps14_buck(num, min, step, min_sel) {  \
 574         .name           = "BUCK"#num,                           \
 575         .id             = S2MPS14_BUCK##num,                    \
 576         .ops            = &s2mps14_reg_ops,                     \
 577         .type           = REGULATOR_VOLTAGE,                    \
 578         .owner          = THIS_MODULE,                          \
 579         .min_uV         = min,                                  \
 580         .uV_step        = step,                                 \
 581         .n_voltages     = S2MPS14_BUCK_N_VOLTAGES,              \
 582         .linear_min_sel = min_sel,                              \
 583         .ramp_delay     = S2MPS14_BUCK_RAMP_DELAY,              \
 584         .vsel_reg       = S2MPS14_REG_B1CTRL2 + (num - 1) * 2,  \
 585         .vsel_mask      = S2MPS14_BUCK_VSEL_MASK,               \
 586         .enable_reg     = S2MPS14_REG_B1CTRL1 + (num - 1) * 2,  \
 587         .enable_mask    = S2MPS14_ENABLE_MASK                   \
 588 }
 589
 590 static const struct regulator_desc s2mps14_regulators[] = {
 591         regulator_desc_s2mps14_ldo(1, MIN_800_MV, STEP_12_5_MV),
 592         regulator_desc_s2mps14_ldo(2, MIN_800_MV, STEP_12_5_MV),
 593         regulator_desc_s2mps14_ldo(3, MIN_800_MV, STEP_25_MV),
 594         regulator_desc_s2mps14_ldo(4, MIN_800_MV, STEP_25_MV),
 595         regulator_desc_s2mps14_ldo(5, MIN_800_MV, STEP_12_5_MV),
 596         regulator_desc_s2mps14_ldo(6, MIN_800_MV, STEP_12_5_MV),
 597         regulator_desc_s2mps14_ldo(7, MIN_800_MV, STEP_25_MV),
 598         regulator_desc_s2mps14_ldo(8, MIN_1800_MV, STEP_25_MV),
 599         regulator_desc_s2mps14_ldo(9, MIN_800_MV, STEP_12_5_MV),
 600         regulator_desc_s2mps14_ldo(10, MIN_800_MV, STEP_12_5_MV),
 601         regulator_desc_s2mps14_ldo(11, MIN_800_MV, STEP_25_MV),
 602         regulator_desc_s2mps14_ldo(12, MIN_1800_MV, STEP_25_MV),
 603         regulator_desc_s2mps14_ldo(13, MIN_1800_MV, STEP_25_MV),
 604         regulator_desc_s2mps14_ldo(14, MIN_1800_MV, STEP_25_MV),
 605         regulator_desc_s2mps14_ldo(15, MIN_1800_MV, STEP_25_MV),
 606         regulator_desc_s2mps14_ldo(16, MIN_1800_MV, STEP_25_MV),
 607         regulator_desc_s2mps14_ldo(17, MIN_1800_MV, STEP_25_MV),
 608         regulator_desc_s2mps14_ldo(18, MIN_1800_MV, STEP_25_MV),
 609         regulator_desc_s2mps14_ldo(19, MIN_800_MV, STEP_25_MV),
 610         regulator_desc_s2mps14_ldo(20, MIN_800_MV, STEP_25_MV),
 611         regulator_desc_s2mps14_ldo(21, MIN_800_MV, STEP_25_MV),
 612         regulator_desc_s2mps14_ldo(22, MIN_800_MV, STEP_12_5_MV),
 613         regulator_desc_s2mps14_ldo(23, MIN_800_MV, STEP_25_MV),
 614         regulator_desc_s2mps14_ldo(24, MIN_1800_MV, STEP_25_MV),
 615         regulator_desc_s2mps14_ldo(25, MIN_1800_MV, STEP_25_MV),
 616         regulator_desc_s2mps14_buck(1, MIN_600_MV, STEP_6_25_MV,
 617                                     S2MPS14_BUCK1235_START_SEL),
 618         regulator_desc_s2mps14_buck(2, MIN_600_MV, STEP_6_25_MV,
 619                                     S2MPS14_BUCK1235_START_SEL),
 620         regulator_desc_s2mps14_buck(3, MIN_600_MV, STEP_6_25_MV,
 621                                     S2MPS14_BUCK1235_START_SEL),
 622         regulator_desc_s2mps14_buck(4, MIN_1400_MV, STEP_12_5_MV,
 623                                     S2MPS14_BUCK4_START_SEL),
 624         regulator_desc_s2mps14_buck(5, MIN_600_MV, STEP_6_25_MV,
 625                                     S2MPS14_BUCK1235_START_SEL),
 626 };
 627
 628 static int s2mps14_pmic_enable_ext_control(struct s2mps11_info *s2mps11,
 629                 struct regulator_dev *rdev)
 630 {
 631         return regmap_update_bits(rdev->regmap, rdev->desc->enable_reg,
 632                         rdev->desc->enable_mask, S2MPS14_ENABLE_EXT_CONTROL);
 633 }
 634
 635 static void s2mps14_pmic_dt_parse_ext_control_gpio(struct platform_device *pdev,
 636                 struct of_regulator_match *rdata, struct s2mps11_info *s2mps11)
 637 {
 638         int *gpio = s2mps11->ext_control_gpio;
 639         unsigned int i;
 640         unsigned int valid_regulators[3] = { S2MPS14_LDO10, S2MPS14_LDO11,
 641                 S2MPS14_LDO12 };
 642
 643         for (i = 0; i < ARRAY_SIZE(valid_regulators); i++) {
 644                 unsigned int reg = valid_regulators[i];
 645
 646                 if (!rdata[reg].init_data || !rdata[reg].of_node)
 647                         continue;
 648
 649                 gpio[reg] = of_get_named_gpio(rdata[reg].of_node,
 650                                 "samsung,ext-control-gpios", 0);
 651                 if (gpio_is_valid(gpio[reg]))
 652                         dev_dbg(&pdev->dev, "Using GPIO %d for ext-control over %d/%s\n",
 653                                         gpio[reg], reg, rdata[reg].name);
 654         }
 655 }
 656
 657 static int s2mps11_pmic_dt_parse(struct platform_device *pdev,
 658                 struct of_regulator_match *rdata, struct s2mps11_info *s2mps11)
 659 {
 660         struct device_node *reg_np;
 661
 662         reg_np = of_get_child_by_name(pdev->dev.parent->of_node, "regulators");
 663         if (!reg_np) {
 664                 dev_err(&pdev->dev, "could not find regulators sub-node\n");
 665                 return -EINVAL;
 666         }
 667
 668         of_regulator_match(&pdev->dev, reg_np, rdata, s2mps11->rdev_num);
 669         if (s2mps11->dev_type == S2MPS14X)
 670                 s2mps14_pmic_dt_parse_ext_control_gpio(pdev, rdata, s2mps11);
 671
 672         of_node_put(reg_np);
 673
 674         return 0;
 675 }
 676
 677 static int s2mpu02_set_ramp_delay(struct regulator_dev *rdev, int ramp_delay)
 678 {
 679         unsigned int ramp_val, ramp_shift, ramp_reg;
 680
 681         switch (rdev_get_id(rdev)) {
 682         case S2MPU02_BUCK1:
 683                 ramp_shift = S2MPU02_BUCK1_RAMP_SHIFT;
 684                 break;
 685         case S2MPU02_BUCK2:
 686                 ramp_shift = S2MPU02_BUCK2_RAMP_SHIFT;
 687                 break;
 688         case S2MPU02_BUCK3:
 689                 ramp_shift = S2MPU02_BUCK3_RAMP_SHIFT;
 690                 break;
 691         case S2MPU02_BUCK4:
 692                 ramp_shift = S2MPU02_BUCK4_RAMP_SHIFT;
 693                 break;
 694         default:
 695                 return 0;
 696         }
 697         ramp_reg = S2MPU02_REG_RAMP1;
 698         ramp_val = get_ramp_delay(ramp_delay);
 699
 700         return regmap_update_bits(rdev->regmap, ramp_reg,
 701                                   S2MPU02_BUCK1234_RAMP_MASK << ramp_shift,
 702                                   ramp_val << ramp_shift);
 703 }
 704
 705 static struct regulator_ops s2mpu02_ldo_ops = {
 706         .list_voltage           = regulator_list_voltage_linear,
 707         .map_voltage            = regulator_map_voltage_linear,
 708         .is_enabled             = regulator_is_enabled_regmap,
 709         .enable                 = s2mps14_regulator_enable,
 710         .disable                = regulator_disable_regmap,
 711         .get_voltage_sel        = regulator_get_voltage_sel_regmap,
 712         .set_voltage_sel        = regulator_set_voltage_sel_regmap,
 713         .set_voltage_time_sel   = regulator_set_voltage_time_sel,
 714         .set_suspend_disable    = s2mps14_regulator_set_suspend_disable,
 715 };
 716
 717 static struct regulator_ops s2mpu02_buck_ops = {
 718         .list_voltage           = regulator_list_voltage_linear,
 719         .map_voltage            = regulator_map_voltage_linear,
 720         .is_enabled             = regulator_is_enabled_regmap,
 721         .enable                 = s2mps14_regulator_enable,
 722         .disable                = regulator_disable_regmap,
 723         .get_voltage_sel        = regulator_get_voltage_sel_regmap,
 724         .set_voltage_sel        = regulator_set_voltage_sel_regmap,
 725         .set_voltage_time_sel   = regulator_set_voltage_time_sel,
 726         .set_suspend_disable    = s2mps14_regulator_set_suspend_disable,
 727         .set_ramp_delay         = s2mpu02_set_ramp_delay,
 728 };
 729
 730 #define regulator_desc_s2mpu02_ldo1(num) {              \
 731         .name           = "LDO"#num,                    \
 732         .id             = S2MPU02_LDO##num,             \
 733         .ops            = &s2mpu02_ldo_ops,             \
 734         .type           = REGULATOR_VOLTAGE,            \
 735         .owner          = THIS_MODULE,                  \
 736         .min_uV         = S2MPU02_LDO_MIN_900MV,        \
 737         .uV_step        = S2MPU02_LDO_STEP_12_5MV,      \
 738         .linear_min_sel = S2MPU02_LDO_GROUP1_START_SEL, \
 739         .n_voltages     = S2MPU02_LDO_N_VOLTAGES,       \
 740         .vsel_reg       = S2MPU02_REG_L1CTRL,           \
 741         .vsel_mask      = S2MPU02_LDO_VSEL_MASK,        \
 742         .enable_reg     = S2MPU02_REG_L1CTRL,           \
 743         .enable_mask    = S2MPU02_ENABLE_MASK           \
 744 }
 745 #define regulator_desc_s2mpu02_ldo2(num) {              \
 746         .name           = "LDO"#num,                    \
 747         .id             = S2MPU02_LDO##num,             \
 748         .ops            = &s2mpu02_ldo_ops,             \
 749         .type           = REGULATOR_VOLTAGE,            \
 750         .owner          = THIS_MODULE,                  \
 751         .min_uV         = S2MPU02_LDO_MIN_1050MV,       \
 752         .uV_step        = S2MPU02_LDO_STEP_25MV,        \
 753         .linear_min_sel = S2MPU02_LDO_GROUP2_START_SEL, \
 754         .n_voltages     = S2MPU02_LDO_N_VOLTAGES,       \
 755         .vsel_reg       = S2MPU02_REG_L2CTRL1,          \
 756         .vsel_mask      = S2MPU02_LDO_VSEL_MASK,        \
 757         .enable_reg     = S2MPU02_REG_L2CTRL1,          \
 758         .enable_mask    = S2MPU02_ENABLE_MASK           \
 759 }
 760 #define regulator_desc_s2mpu02_ldo3(num) {              \
 761         .name           = "LDO"#num,                    \
 762         .id             = S2MPU02_LDO##num,             \
 763         .ops            = &s2mpu02_ldo_ops,             \
 764         .type           = REGULATOR_VOLTAGE,            \
 765         .owner          = THIS_MODULE,                  \
 766         .min_uV         = S2MPU02_LDO_MIN_900MV,        \
 767         .uV_step        = S2MPU02_LDO_STEP_12_5MV,      \
 768         .linear_min_sel = S2MPU02_LDO_GROUP1_START_SEL, \
 769         .n_voltages     = S2MPU02_LDO_N_VOLTAGES,       \
 770         .vsel_reg       = S2MPU02_REG_L3CTRL + num - 3, \
 771         .vsel_mask      = S2MPU02_LDO_VSEL_MASK,        \
 772         .enable_reg     = S2MPU02_REG_L3CTRL + num - 3, \
 773         .enable_mask    = S2MPU02_ENABLE_MASK           \
 774 }
 775 #define regulator_desc_s2mpu02_ldo4(num) {              \
 776         .name           = "LDO"#num,                    \
 777         .id             = S2MPU02_LDO##num,             \
 778         .ops            = &s2mpu02_ldo_ops,             \
 779         .type           = REGULATOR_VOLTAGE,            \
 780         .owner          = THIS_MODULE,                  \
 781         .min_uV         = S2MPU02_LDO_MIN_1050MV,       \
 782         .uV_step        = S2MPU02_LDO_STEP_25MV,        \
 783         .linear_min_sel = S2MPU02_LDO_GROUP2_START_SEL, \
 784         .n_voltages     = S2MPU02_LDO_N_VOLTAGES,       \
 785         .vsel_reg       = S2MPU02_REG_L3CTRL + num - 3, \
 786         .vsel_mask      = S2MPU02_LDO_VSEL_MASK,        \
 787         .enable_reg     = S2MPU02_REG_L3CTRL + num - 3, \
 788         .enable_mask    = S2MPU02_ENABLE_MASK           \
 789 }
 790 #define regulator_desc_s2mpu02_ldo5(num) {              \
 791         .name           = "LDO"#num,                    \
 792         .id             = S2MPU02_LDO##num,             \
 793         .ops            = &s2mpu02_ldo_ops,             \
 794         .type           = REGULATOR_VOLTAGE,            \
 795         .owner          = THIS_MODULE,                  \
 796         .min_uV         = S2MPU02_LDO_MIN_1600MV,       \
 797         .uV_step        = S2MPU02_LDO_STEP_50MV,        \
 798         .linear_min_sel = S2MPU02_LDO_GROUP3_START_SEL, \
 799         .n_voltages     = S2MPU02_LDO_N_VOLTAGES,       \
 800         .vsel_reg       = S2MPU02_REG_L3CTRL + num - 3, \
 801         .vsel_mask      = S2MPU02_LDO_VSEL_MASK,        \
 802         .enable_reg     = S2MPU02_REG_L3CTRL + num - 3, \
 803         .enable_mask    = S2MPU02_ENABLE_MASK           \
 804 }
 805
 806 #define regulator_desc_s2mpu02_buck1234(num) {                  \
 807         .name           = "BUCK"#num,                           \
 808         .id             = S2MPU02_BUCK##num,                    \
 809         .ops            = &s2mpu02_buck_ops,                    \
 810         .type           = REGULATOR_VOLTAGE,                    \
 811         .owner          = THIS_MODULE,                          \
 812         .min_uV         = S2MPU02_BUCK1234_MIN_600MV,           \
 813         .uV_step        = S2MPU02_BUCK1234_STEP_6_25MV,         \
 814         .n_voltages     = S2MPU02_BUCK_N_VOLTAGES,              \
 815         .linear_min_sel = S2MPU02_BUCK1234_START_SEL,           \
 816         .ramp_delay     = S2MPU02_BUCK_RAMP_DELAY,              \
 817         .vsel_reg       = S2MPU02_REG_B1CTRL2 + (num - 1) * 2,  \
 818         .vsel_mask      = S2MPU02_BUCK_VSEL_MASK,               \
 819         .enable_reg     = S2MPU02_REG_B1CTRL1 + (num - 1) * 2,  \
 820         .enable_mask    = S2MPU02_ENABLE_MASK                   \
 821 }
 822 #define regulator_desc_s2mpu02_buck5(num) {                     \
 823         .name           = "BUCK"#num,                           \
 824         .id             = S2MPU02_BUCK##num,                    \
 825         .ops            = &s2mpu02_ldo_ops,                     \
 826         .type           = REGULATOR_VOLTAGE,                    \
 827         .owner          = THIS_MODULE,                          \
 828         .min_uV         = S2MPU02_BUCK5_MIN_1081_25MV,          \
 829         .uV_step        = S2MPU02_BUCK5_STEP_6_25MV,            \
 830         .n_voltages     = S2MPU02_BUCK_N_VOLTAGES,              \
 831         .linear_min_sel = S2MPU02_BUCK5_START_SEL,              \
 832         .ramp_delay     = S2MPU02_BUCK_RAMP_DELAY,              \
 833         .vsel_reg       = S2MPU02_REG_B5CTRL2,                  \
 834         .vsel_mask      = S2MPU02_BUCK_VSEL_MASK,               \
 835         .enable_reg     = S2MPU02_REG_B5CTRL1,                  \
 836         .enable_mask    = S2MPU02_ENABLE_MASK                   \
 837 }
 838 #define regulator_desc_s2mpu02_buck6(num) {                     \
 839         .name           = "BUCK"#num,                           \
 840         .id             = S2MPU02_BUCK##num,                    \
 841         .ops            = &s2mpu02_ldo_ops,                     \
 842         .type           = REGULATOR_VOLTAGE,                    \
 843         .owner          = THIS_MODULE,                          \
 844         .min_uV         = S2MPU02_BUCK6_MIN_1700MV,             \
 845         .uV_step        = S2MPU02_BUCK6_STEP_2_50MV,            \
 846         .n_voltages     = S2MPU02_BUCK_N_VOLTAGES,              \
 847         .linear_min_sel = S2MPU02_BUCK6_START_SEL,              \
 848         .ramp_delay     = S2MPU02_BUCK_RAMP_DELAY,              \
 849         .vsel_reg       = S2MPU02_REG_B6CTRL2,                  \
 850         .vsel_mask      = S2MPU02_BUCK_VSEL_MASK,               \
 851         .enable_reg     = S2MPU02_REG_B6CTRL1,                  \
 852         .enable_mask    = S2MPU02_ENABLE_MASK                   \
 853 }
 854 #define regulator_desc_s2mpu02_buck7(num) {                     \
 855         .name           = "BUCK"#num,                           \
 856         .id             = S2MPU02_BUCK##num,                    \
 857         .ops            = &s2mpu02_ldo_ops,                     \
 858         .type           = REGULATOR_VOLTAGE,                    \
 859         .owner          = THIS_MODULE,                          \
 860         .min_uV         = S2MPU02_BUCK7_MIN_900MV,              \
 861         .uV_step        = S2MPU02_BUCK7_STEP_6_25MV,            \
 862         .n_voltages     = S2MPU02_BUCK_N_VOLTAGES,              \
 863         .linear_min_sel = S2MPU02_BUCK7_START_SEL,              \
 864         .ramp_delay     = S2MPU02_BUCK_RAMP_DELAY,              \
 865         .vsel_reg       = S2MPU02_REG_B7CTRL2,                  \
 866         .vsel_mask      = S2MPU02_BUCK_VSEL_MASK,               \
 867         .enable_reg     = S2MPU02_REG_B7CTRL1,                  \
 868         .enable_mask    = S2MPU02_ENABLE_MASK                   \
 869 }
 870
 871 static const struct regulator_desc s2mpu02_regulators[] = {
 872         regulator_desc_s2mpu02_ldo1(1),
 873         regulator_desc_s2mpu02_ldo2(2),
 874         regulator_desc_s2mpu02_ldo4(3),
 875         regulator_desc_s2mpu02_ldo5(4),
 876         regulator_desc_s2mpu02_ldo4(5),
 877         regulator_desc_s2mpu02_ldo3(6),
 878         regulator_desc_s2mpu02_ldo3(7),
 879         regulator_desc_s2mpu02_ldo4(8),
 880         regulator_desc_s2mpu02_ldo5(9),
 881         regulator_desc_s2mpu02_ldo3(10),
 882         regulator_desc_s2mpu02_ldo4(11),
 883         regulator_desc_s2mpu02_ldo5(12),
 884         regulator_desc_s2mpu02_ldo5(13),
 885         regulator_desc_s2mpu02_ldo5(14),
 886         regulator_desc_s2mpu02_ldo5(15),
 887         regulator_desc_s2mpu02_ldo5(16),
 888         regulator_desc_s2mpu02_ldo4(17),
 889         regulator_desc_s2mpu02_ldo5(18),
 890         regulator_desc_s2mpu02_ldo3(19),
 891         regulator_desc_s2mpu02_ldo4(20),
 892         regulator_desc_s2mpu02_ldo5(21),
 893         regulator_desc_s2mpu02_ldo5(22),
 894         regulator_desc_s2mpu02_ldo5(23),
 895         regulator_desc_s2mpu02_ldo4(24),
 896         regulator_desc_s2mpu02_ldo5(25),
 897         regulator_desc_s2mpu02_ldo4(26),
 898         regulator_desc_s2mpu02_ldo5(27),
 899         regulator_desc_s2mpu02_ldo5(28),
 900         regulator_desc_s2mpu02_buck1234(1),
 901         regulator_desc_s2mpu02_buck1234(2),
 902         regulator_desc_s2mpu02_buck1234(3),
 903         regulator_desc_s2mpu02_buck1234(4),
 904         regulator_desc_s2mpu02_buck5(5),
 905         regulator_desc_s2mpu02_buck6(6),
 906         regulator_desc_s2mpu02_buck7(7),
 907 };
 908
 909 static int s2mps11_pmic_probe(struct platform_device *pdev)
 910 {
 911         struct sec_pmic_dev *iodev = dev_get_drvdata(pdev->dev.parent);
 912         struct sec_platform_data *pdata = NULL;
 913         struct of_regulator_match *rdata = NULL;
 914         struct regulator_config config = { };
 915         struct s2mps11_info *s2mps11;
 916         int i, ret = 0;
 917         const struct regulator_desc *regulators;
 918
 919         s2mps11 = devm_kzalloc(&pdev->dev, sizeof(struct s2mps11_info),
 920                                 GFP_KERNEL);
 921         if (!s2mps11)
 922                 return -ENOMEM;
 923
 924         s2mps11->dev_type = platform_get_device_id(pdev)->driver_data;
 925         switch (s2mps11->dev_type) {
 926         case S2MPS11X:
 927                 s2mps11->rdev_num = ARRAY_SIZE(s2mps11_regulators);
 928                 regulators = s2mps11_regulators;
 929                 break;
 930         case S2MPS13X:
 931                 s2mps11->rdev_num = ARRAY_SIZE(s2mps13_regulators);
 932                 regulators = s2mps13_regulators;
 933                 break;
 934         case S2MPS14X:
 935                 s2mps11->rdev_num = ARRAY_SIZE(s2mps14_regulators);
 936                 regulators = s2mps14_regulators;
 937                 break;
 938         case S2MPU02:
 939                 s2mps11->rdev_num = ARRAY_SIZE(s2mpu02_regulators);
 940                 regulators = s2mpu02_regulators;
 941                 break;
 942         default:
 943                 dev_err(&pdev->dev, "Invalid device type: %u\n",
 944                                     s2mps11->dev_type);
 945                 return -EINVAL;
 946         };
 947
 948         s2mps11->ext_control_gpio = devm_kmalloc(&pdev->dev,
 949                         sizeof(*s2mps11->ext_control_gpio) * s2mps11->rdev_num,
 950                         GFP_KERNEL);
 951         if (!s2mps11->ext_control_gpio)
 952                 return -ENOMEM;
 953         /*
 954          * 0 is a valid GPIO so initialize all GPIO-s to negative value
 955          * to indicate that external control won't be used for this regulator.
 956          */
 957         for (i = 0; i < s2mps11->rdev_num; i++)
 958                 s2mps11->ext_control_gpio[i] = -EINVAL;
 959
 960         if (!iodev->dev->of_node) {
 961                 if (iodev->pdata) {
 962                         pdata = iodev->pdata;
 963                         goto common_reg;
 964                 } else {
 965                         dev_err(pdev->dev.parent,
 966                                 "Platform data or DT node not supplied\n");
 967                         return -ENODEV;
 968                 }
 969         }
 970
 971         rdata = kzalloc(sizeof(*rdata) * s2mps11->rdev_num, GFP_KERNEL);
 972         if (!rdata)
 973                 return -ENOMEM;
 974
 975         for (i = 0; i < s2mps11->rdev_num; i++)
 976                 rdata[i].name = regulators[i].name;
 977
 978         ret = s2mps11_pmic_dt_parse(pdev, rdata, s2mps11);
 979         if (ret)
 980                 goto out;
 981
 982 common_reg:
 983         platform_set_drvdata(pdev, s2mps11);
 984
 985         config.dev = &pdev->dev;
 986         config.regmap = iodev->regmap_pmic;
 987         config.driver_data = s2mps11;
 988         config.ena_gpio_flags = GPIOF_OUT_INIT_HIGH;
 989         config.ena_gpio_initialized = true;
 990         for (i = 0; i < s2mps11->rdev_num; i++) {
 991                 struct regulator_dev *regulator;
 992
 993                 if (pdata) {
 994                         config.init_data = pdata->regulators[i].initdata;
 995                         config.of_node = pdata->regulators[i].reg_node;
 996                 } else {
 997                         config.init_data = rdata[i].init_data;
 998                         config.of_node = rdata[i].of_node;
 999                 }
1000                 config.ena_gpio = s2mps11->ext_control_gpio[i];
1001
1002                 regulator = devm_regulator_register(&pdev->dev,
1003                                                 &regulators[i], &config);
1004                 if (IS_ERR(regulator)) {
1005                         ret = PTR_ERR(regulator);
1006                         dev_err(&pdev->dev, "regulator init failed for %d\n",
1007                                 i);
1008                         goto out;
1009                 }
1010
1011                 if (gpio_is_valid(s2mps11->ext_control_gpio[i])) {
1012                         ret = s2mps14_pmic_enable_ext_control(s2mps11,
1013                                         regulator);
1014                         if (ret < 0) {
1015                                 dev_err(&pdev->dev,
1016                                                 "failed to enable GPIO control over %s: %d\n",
1017                                                 regulator->desc->name, ret);
1018                                 goto out;
1019                         }
1020                 }
1021         }
1022
1023 out:
1024         kfree(rdata);
1025
1026         return ret;
1027 }
1028
1029 static const struct platform_device_id s2mps11_pmic_id[] = {
1030         { "s2mps11-pmic", S2MPS11X},
1031         { "s2mps13-pmic", S2MPS13X},
1032         { "s2mps14-pmic", S2MPS14X},
1033         { "s2mpu02-pmic", S2MPU02},
1034         { },
1035 };
1036 MODULE_DEVICE_TABLE(platform, s2mps11_pmic_id);
1037
1038 static struct platform_driver s2mps11_pmic_driver = {
1039         .driver = {
1040                 .name = "s2mps11-pmic",
1041         },
1042         .probe = s2mps11_pmic_probe,
1043         .id_table = s2mps11_pmic_id,
1044 };
1045
1046 static int __init s2mps11_pmic_init(void)
1047 {
1048         return platform_driver_register(&s2mps11_pmic_driver);
1049 }
1050 subsys_initcall(s2mps11_pmic_init);
1051
1052 static void __exit s2mps11_pmic_exit(void)
1053 {
1054         platform_driver_unregister(&s2mps11_pmic_driver);
1055 }
1056 module_exit(s2mps11_pmic_exit);
1057
1058 /* Module information */
1059 MODULE_AUTHOR("Sangbeom Kim <sbkim73@samsung.com>");
1060 MODULE_DESCRIPTION("SAMSUNG S2MPS11/S2MPS14/S2MPU02 Regulator Driver");
1061 MODULE_LICENSE("GPL");