kernel/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 /* The highest number of possible regulators for supported devices. */
  38 #define S2MPS_REGULATOR_MAX             S2MPS13_REGULATOR_MAX
  39 struct s2mps11_info {
  40         unsigned int rdev_num;
  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         /* Array of size rdev_num with GPIO-s for external sleep control */
  57         int *ext_control_gpio;
  58 };
  59
  60 static int get_ramp_delay(int ramp_delay)
  61 {
  62         unsigned char cnt = 0;
  63
  64         ramp_delay /= 6250;
  65
  66         while (true) {
  67                 ramp_delay = ramp_delay >> 1;
  68                 if (ramp_delay == 0)
  69                         break;
  70                 cnt++;
  71         }
  72
  73         if (cnt > 3)
  74                 cnt = 3;
  75
  76         return cnt;
  77 }
  78
  79 static int s2mps11_regulator_set_voltage_time_sel(struct regulator_dev *rdev,
  80                                    unsigned int old_selector,
  81                                    unsigned int new_selector)
  82 {
  83         struct s2mps11_info *s2mps11 = rdev_get_drvdata(rdev);
  84         unsigned int ramp_delay = 0;
  85         int old_volt, new_volt;
  86
  87         switch (rdev_get_id(rdev)) {
  88         case S2MPS11_BUCK2:
  89                 ramp_delay = s2mps11->ramp_delay2;
  90                 break;
  91         case S2MPS11_BUCK3:
  92         case S2MPS11_BUCK4:
  93                 ramp_delay = s2mps11->ramp_delay34;
  94                 break;
  95         case S2MPS11_BUCK5:
  96                 ramp_delay = s2mps11->ramp_delay5;
  97                 break;
  98         case S2MPS11_BUCK6:
  99         case S2MPS11_BUCK1:
 100                 ramp_delay = s2mps11->ramp_delay16;
 101                 break;
 102         case S2MPS11_BUCK7:
 103         case S2MPS11_BUCK8:
 104         case S2MPS11_BUCK10:
 105                 ramp_delay = s2mps11->ramp_delay7810;
 106                 break;
 107         case S2MPS11_BUCK9:
 108                 ramp_delay = s2mps11->ramp_delay9;
 109         }
 110
 111         if (ramp_delay == 0)
 112                 ramp_delay = rdev->desc->ramp_delay;
 113
 114         old_volt = rdev->desc->min_uV + (rdev->desc->uV_step * old_selector);
 115         new_volt = rdev->desc->min_uV + (rdev->desc->uV_step * new_selector);
 116
 117         return DIV_ROUND_UP(abs(new_volt - old_volt), ramp_delay);
 118 }
 119
 120 static int s2mps11_set_ramp_delay(struct regulator_dev *rdev, int ramp_delay)
 121 {
 122         struct s2mps11_info *s2mps11 = rdev_get_drvdata(rdev);
 123         unsigned int ramp_val, ramp_shift, ramp_reg = S2MPS11_REG_RAMP_BUCK;
 124         unsigned int ramp_enable = 1, enable_shift = 0;
 125         int ret;
 126
 127         switch (rdev_get_id(rdev)) {
 128         case S2MPS11_BUCK1:
 129                 if (ramp_delay > s2mps11->ramp_delay16)
 130                         s2mps11->ramp_delay16 = ramp_delay;
 131                 else
 132                         ramp_delay = s2mps11->ramp_delay16;
 133
 134                 ramp_shift = S2MPS11_BUCK16_RAMP_SHIFT;
 135                 break;
 136         case S2MPS11_BUCK2:
 137                 enable_shift = S2MPS11_BUCK2_RAMP_EN_SHIFT;
 138                 if (!ramp_delay) {
 139                         ramp_enable = 0;
 140                         break;
 141                 }
 142
 143                 s2mps11->ramp_delay2 = ramp_delay;
 144                 ramp_shift = S2MPS11_BUCK2_RAMP_SHIFT;
 145                 ramp_reg = S2MPS11_REG_RAMP;
 146                 break;
 147         case S2MPS11_BUCK3:
 148                 enable_shift = S2MPS11_BUCK3_RAMP_EN_SHIFT;
 149                 if (!ramp_delay) {
 150                         ramp_enable = 0;
 151                         break;
 152                 }
 153
 154                 if (ramp_delay > s2mps11->ramp_delay34)
 155                         s2mps11->ramp_delay34 = ramp_delay;
 156                 else
 157                         ramp_delay = s2mps11->ramp_delay34;
 158
 159                 ramp_shift = S2MPS11_BUCK34_RAMP_SHIFT;
 160                 ramp_reg = S2MPS11_REG_RAMP;
 161                 break;
 162         case S2MPS11_BUCK4:
 163                 enable_shift = S2MPS11_BUCK4_RAMP_EN_SHIFT;
 164                 if (!ramp_delay) {
 165                         ramp_enable = 0;
 166                         break;
 167                 }
 168
 169                 if (ramp_delay > s2mps11->ramp_delay34)
 170                         s2mps11->ramp_delay34 = ramp_delay;
 171                 else
 172                         ramp_delay = s2mps11->ramp_delay34;
 173
 174                 ramp_shift = S2MPS11_BUCK34_RAMP_SHIFT;
 175                 ramp_reg = S2MPS11_REG_RAMP;
 176                 break;
 177         case S2MPS11_BUCK5:
 178                 s2mps11->ramp_delay5 = ramp_delay;
 179                 ramp_shift = S2MPS11_BUCK5_RAMP_SHIFT;
 180                 break;
 181         case S2MPS11_BUCK6:
 182                 enable_shift = S2MPS11_BUCK6_RAMP_EN_SHIFT;
 183                 if (!ramp_delay) {
 184                         ramp_enable = 0;
 185                         break;
 186                 }
 187
 188                 if (ramp_delay > s2mps11->ramp_delay16)
 189                         s2mps11->ramp_delay16 = ramp_delay;
 190                 else
 191                         ramp_delay = s2mps11->ramp_delay16;
 192
 193                 ramp_shift = S2MPS11_BUCK16_RAMP_SHIFT;
 194                 break;
 195         case S2MPS11_BUCK7:
 196         case S2MPS11_BUCK8:
 197         case S2MPS11_BUCK10:
 198                 if (ramp_delay > s2mps11->ramp_delay7810)
 199                         s2mps11->ramp_delay7810 = ramp_delay;
 200                 else
 201                         ramp_delay = s2mps11->ramp_delay7810;
 202
 203                 ramp_shift = S2MPS11_BUCK7810_RAMP_SHIFT;
 204                 break;
 205         case S2MPS11_BUCK9:
 206                 s2mps11->ramp_delay9 = ramp_delay;
 207                 ramp_shift = S2MPS11_BUCK9_RAMP_SHIFT;
 208                 break;
 209         default:
 210                 return 0;
 211         }
 212
 213         if (!ramp_enable)
 214                 goto ramp_disable;
 215
 216         /* Ramp delay can be enabled/disabled only for buck[2346] */
 217         if ((rdev_get_id(rdev) >= S2MPS11_BUCK2 &&
 218                         rdev_get_id(rdev) <= S2MPS11_BUCK4) ||
 219                         rdev_get_id(rdev) == S2MPS11_BUCK6)  {
 220                 ret = regmap_update_bits(rdev->regmap, S2MPS11_REG_RAMP,
 221                                          1 << enable_shift, 1 << enable_shift);
 222                 if (ret) {
 223                         dev_err(&rdev->dev, "failed to enable ramp rate\n");
 224                         return ret;
 225                 }
 226         }
 227
 228         ramp_val = get_ramp_delay(ramp_delay);
 229
 230         return regmap_update_bits(rdev->regmap, ramp_reg, 0x3 << ramp_shift,
 231                                   ramp_val << ramp_shift);
 232
 233 ramp_disable:
 234         return regmap_update_bits(rdev->regmap, S2MPS11_REG_RAMP,
 235                                   1 << enable_shift, 0);
 236 }
 237
 238 static struct regulator_ops s2mps11_ldo_ops = {
 239         .list_voltage           = regulator_list_voltage_linear,
 240         .map_voltage            = regulator_map_voltage_linear,
 241         .is_enabled             = regulator_is_enabled_regmap,
 242         .enable                 = regulator_enable_regmap,
 243         .disable                = regulator_disable_regmap,
 244         .get_voltage_sel        = regulator_get_voltage_sel_regmap,
 245         .set_voltage_sel        = regulator_set_voltage_sel_regmap,
 246         .set_voltage_time_sel   = regulator_set_voltage_time_sel,
 247 };
 248
 249 static struct regulator_ops s2mps11_buck_ops = {
 250         .list_voltage           = regulator_list_voltage_linear,
 251         .map_voltage            = regulator_map_voltage_linear,
 252         .is_enabled             = regulator_is_enabled_regmap,
 253         .enable                 = regulator_enable_regmap,
 254         .disable                = regulator_disable_regmap,
 255         .get_voltage_sel        = regulator_get_voltage_sel_regmap,
 256         .set_voltage_sel        = regulator_set_voltage_sel_regmap,
 257         .set_voltage_time_sel   = s2mps11_regulator_set_voltage_time_sel,
 258         .set_ramp_delay         = s2mps11_set_ramp_delay,
 259 };
 260
 261 #define regulator_desc_s2mps11_ldo(num, step) {         \
 262         .name           = "LDO"#num,                    \
 263         .id             = S2MPS11_LDO##num,             \
 264         .ops            = &s2mps11_ldo_ops,             \
 265         .type           = REGULATOR_VOLTAGE,            \
 266         .owner          = THIS_MODULE,                  \
 267         .min_uV         = MIN_800_MV,                   \
 268         .uV_step        = step,                         \
 269         .n_voltages     = S2MPS11_LDO_N_VOLTAGES,       \
 270         .vsel_reg       = S2MPS11_REG_L1CTRL + num - 1, \
 271         .vsel_mask      = S2MPS11_LDO_VSEL_MASK,        \
 272         .enable_reg     = S2MPS11_REG_L1CTRL + num - 1, \
 273         .enable_mask    = S2MPS11_ENABLE_MASK           \
 274 }
 275
 276 #define regulator_desc_s2mps11_buck1_4(num) {                   \
 277         .name           = "BUCK"#num,                           \
 278         .id             = S2MPS11_BUCK##num,                    \
 279         .ops            = &s2mps11_buck_ops,                    \
 280         .type           = REGULATOR_VOLTAGE,                    \
 281         .owner          = THIS_MODULE,                          \
 282         .min_uV         = MIN_600_MV,                           \
 283         .uV_step        = STEP_6_25_MV,                         \
 284         .n_voltages     = S2MPS11_BUCK_N_VOLTAGES,              \
 285         .ramp_delay     = S2MPS11_RAMP_DELAY,                   \
 286         .vsel_reg       = S2MPS11_REG_B1CTRL2 + (num - 1) * 2,  \
 287         .vsel_mask      = S2MPS11_BUCK_VSEL_MASK,               \
 288         .enable_reg     = S2MPS11_REG_B1CTRL1 + (num - 1) * 2,  \
 289         .enable_mask    = S2MPS11_ENABLE_MASK                   \
 290 }
 291
 292 #define regulator_desc_s2mps11_buck5 {                          \
 293         .name           = "BUCK5",                              \
 294         .id             = S2MPS11_BUCK5,                        \
 295         .ops            = &s2mps11_buck_ops,                    \
 296         .type           = REGULATOR_VOLTAGE,                    \
 297         .owner          = THIS_MODULE,                          \
 298         .min_uV         = MIN_600_MV,                           \
 299         .uV_step        = STEP_6_25_MV,                         \
 300         .n_voltages     = S2MPS11_BUCK_N_VOLTAGES,              \
 301         .ramp_delay     = S2MPS11_RAMP_DELAY,                   \
 302         .vsel_reg       = S2MPS11_REG_B5CTRL2,                  \
 303         .vsel_mask      = S2MPS11_BUCK_VSEL_MASK,               \
 304         .enable_reg     = S2MPS11_REG_B5CTRL1,                  \
 305         .enable_mask    = S2MPS11_ENABLE_MASK                   \
 306 }
 307
 308 #define regulator_desc_s2mps11_buck67810(num, min, step) {      \
 309         .name           = "BUCK"#num,                           \
 310         .id             = S2MPS11_BUCK##num,                    \
 311         .ops            = &s2mps11_buck_ops,                    \
 312         .type           = REGULATOR_VOLTAGE,                    \
 313         .owner          = THIS_MODULE,                          \
 314         .min_uV         = min,                                  \
 315         .uV_step        = step,                                 \
 316         .n_voltages     = S2MPS11_BUCK_N_VOLTAGES,              \
 317         .ramp_delay     = S2MPS11_RAMP_DELAY,                   \
 318         .vsel_reg       = S2MPS11_REG_B6CTRL2 + (num - 6) * 2,  \
 319         .vsel_mask      = S2MPS11_BUCK_VSEL_MASK,               \
 320         .enable_reg     = S2MPS11_REG_B6CTRL1 + (num - 6) * 2,  \
 321         .enable_mask    = S2MPS11_ENABLE_MASK                   \
 322 }
 323
 324 #define regulator_desc_s2mps11_buck9 {                          \
 325         .name           = "BUCK9",                              \
 326         .id             = S2MPS11_BUCK9,                        \
 327         .ops            = &s2mps11_buck_ops,                    \
 328         .type           = REGULATOR_VOLTAGE,                    \
 329         .owner          = THIS_MODULE,                          \
 330         .min_uV         = MIN_3000_MV,                          \
 331         .uV_step        = STEP_25_MV,                           \
 332         .n_voltages     = S2MPS11_BUCK9_N_VOLTAGES,             \
 333         .ramp_delay     = S2MPS11_RAMP_DELAY,                   \
 334         .vsel_reg       = S2MPS11_REG_B9CTRL2,                  \
 335         .vsel_mask      = S2MPS11_BUCK9_VSEL_MASK,              \
 336         .enable_reg     = S2MPS11_REG_B9CTRL1,                  \
 337         .enable_mask    = S2MPS11_ENABLE_MASK                   \
 338 }
 339
 340 static const struct regulator_desc s2mps11_regulators[] = {
 341         regulator_desc_s2mps11_ldo(1, STEP_25_MV),
 342         regulator_desc_s2mps11_ldo(2, STEP_50_MV),
 343         regulator_desc_s2mps11_ldo(3, STEP_50_MV),
 344         regulator_desc_s2mps11_ldo(4, STEP_50_MV),
 345         regulator_desc_s2mps11_ldo(5, STEP_50_MV),
 346         regulator_desc_s2mps11_ldo(6, STEP_25_MV),
 347         regulator_desc_s2mps11_ldo(7, STEP_50_MV),
 348         regulator_desc_s2mps11_ldo(8, STEP_50_MV),
 349         regulator_desc_s2mps11_ldo(9, STEP_50_MV),
 350         regulator_desc_s2mps11_ldo(10, STEP_50_MV),
 351         regulator_desc_s2mps11_ldo(11, STEP_25_MV),
 352         regulator_desc_s2mps11_ldo(12, STEP_50_MV),
 353         regulator_desc_s2mps11_ldo(13, STEP_50_MV),
 354         regulator_desc_s2mps11_ldo(14, STEP_50_MV),
 355         regulator_desc_s2mps11_ldo(15, STEP_50_MV),
 356         regulator_desc_s2mps11_ldo(16, STEP_50_MV),
 357         regulator_desc_s2mps11_ldo(17, STEP_50_MV),
 358         regulator_desc_s2mps11_ldo(18, STEP_50_MV),
 359         regulator_desc_s2mps11_ldo(19, STEP_50_MV),
 360         regulator_desc_s2mps11_ldo(20, STEP_50_MV),
 361         regulator_desc_s2mps11_ldo(21, STEP_50_MV),
 362         regulator_desc_s2mps11_ldo(22, STEP_25_MV),
 363         regulator_desc_s2mps11_ldo(23, STEP_25_MV),
 364         regulator_desc_s2mps11_ldo(24, STEP_50_MV),
 365         regulator_desc_s2mps11_ldo(25, STEP_50_MV),
 366         regulator_desc_s2mps11_ldo(26, STEP_50_MV),
 367         regulator_desc_s2mps11_ldo(27, STEP_25_MV),
 368         regulator_desc_s2mps11_ldo(28, STEP_50_MV),
 369         regulator_desc_s2mps11_ldo(29, STEP_50_MV),
 370         regulator_desc_s2mps11_ldo(30, STEP_50_MV),
 371         regulator_desc_s2mps11_ldo(31, STEP_50_MV),
 372         regulator_desc_s2mps11_ldo(32, STEP_50_MV),
 373         regulator_desc_s2mps11_ldo(33, STEP_50_MV),
 374         regulator_desc_s2mps11_ldo(34, STEP_50_MV),
 375         regulator_desc_s2mps11_ldo(35, STEP_50_MV),
 376         regulator_desc_s2mps11_ldo(36, STEP_50_MV),
 377         regulator_desc_s2mps11_ldo(37, STEP_50_MV),
 378         regulator_desc_s2mps11_ldo(38, STEP_50_MV),
 379         regulator_desc_s2mps11_buck1_4(1),
 380         regulator_desc_s2mps11_buck1_4(2),
 381         regulator_desc_s2mps11_buck1_4(3),
 382         regulator_desc_s2mps11_buck1_4(4),
 383         regulator_desc_s2mps11_buck5,
 384         regulator_desc_s2mps11_buck67810(6, MIN_600_MV, STEP_6_25_MV),
 385         regulator_desc_s2mps11_buck67810(7, MIN_600_MV, STEP_6_25_MV),
 386         regulator_desc_s2mps11_buck67810(8, MIN_600_MV, STEP_6_25_MV),
 387         regulator_desc_s2mps11_buck9,
 388         regulator_desc_s2mps11_buck67810(10, MIN_750_MV, STEP_12_5_MV),
 389 };
 390
 391 static struct regulator_ops s2mps14_reg_ops;
 392
 393 #define regulator_desc_s2mps13_ldo(num, min, step, min_sel) {   \
 394         .name           = "LDO"#num,                            \
 395         .id             = S2MPS13_LDO##num,                     \
 396         .ops            = &s2mps14_reg_ops,                     \
 397         .type           = REGULATOR_VOLTAGE,                    \
 398         .owner          = THIS_MODULE,                          \
 399         .min_uV         = min,                                  \
 400         .uV_step        = step,                                 \
 401         .linear_min_sel = min_sel,                              \
 402         .n_voltages     = S2MPS14_LDO_N_VOLTAGES,               \
 403         .vsel_reg       = S2MPS13_REG_L1CTRL + num - 1,         \
 404         .vsel_mask      = S2MPS14_LDO_VSEL_MASK,                \
 405         .enable_reg     = S2MPS13_REG_L1CTRL + num - 1,         \
 406         .enable_mask    = S2MPS14_ENABLE_MASK                   \
 407 }
 408
 409 #define regulator_desc_s2mps13_buck(num, min, step, min_sel) {  \
 410         .name           = "BUCK"#num,                           \
 411         .id             = S2MPS13_BUCK##num,                    \
 412         .ops            = &s2mps14_reg_ops,                     \
 413         .type           = REGULATOR_VOLTAGE,                    \
 414         .owner          = THIS_MODULE,                          \
 415         .min_uV         = min,                                  \
 416         .uV_step        = step,                                 \
 417         .linear_min_sel = min_sel,                              \
 418         .n_voltages     = S2MPS14_BUCK_N_VOLTAGES,              \
 419         .ramp_delay     = S2MPS13_BUCK_RAMP_DELAY,              \
 420         .vsel_reg       = S2MPS13_REG_B1OUT + (num - 1) * 2,    \
 421         .vsel_mask      = S2MPS14_BUCK_VSEL_MASK,               \
 422         .enable_reg     = S2MPS13_REG_B1CTRL + (num - 1) * 2,   \
 423         .enable_mask    = S2MPS14_ENABLE_MASK                   \
 424 }
 425
 426 #define regulator_desc_s2mps13_buck7(num, min, step, min_sel) { \
 427         .name           = "BUCK"#num,                           \
 428         .id             = S2MPS13_BUCK##num,                    \
 429         .ops            = &s2mps14_reg_ops,                     \
 430         .type           = REGULATOR_VOLTAGE,                    \
 431         .owner          = THIS_MODULE,                          \
 432         .min_uV         = min,                                  \
 433         .uV_step        = step,                                 \
 434         .linear_min_sel = min_sel,                              \
 435         .n_voltages     = S2MPS14_BUCK_N_VOLTAGES,              \
 436         .ramp_delay     = S2MPS13_BUCK_RAMP_DELAY,              \
 437         .vsel_reg       = S2MPS13_REG_B1OUT + (num) * 2 - 1,    \
 438         .vsel_mask      = S2MPS14_BUCK_VSEL_MASK,               \
 439         .enable_reg     = S2MPS13_REG_B1CTRL + (num - 1) * 2,   \
 440         .enable_mask    = S2MPS14_ENABLE_MASK                   \
 441 }
 442
 443 #define regulator_desc_s2mps13_buck8_10(num, min, step, min_sel) {      \
 444         .name           = "BUCK"#num,                           \
 445         .id             = S2MPS13_BUCK##num,                    \
 446         .ops            = &s2mps14_reg_ops,                     \
 447         .type           = REGULATOR_VOLTAGE,                    \
 448         .owner          = THIS_MODULE,                          \
 449         .min_uV         = min,                                  \
 450         .uV_step        = step,                                 \
 451         .linear_min_sel = min_sel,                              \
 452         .n_voltages     = S2MPS14_BUCK_N_VOLTAGES,              \
 453         .ramp_delay     = S2MPS13_BUCK_RAMP_DELAY,              \
 454         .vsel_reg       = S2MPS13_REG_B1OUT + (num) * 2 - 1,    \
 455         .vsel_mask      = S2MPS14_BUCK_VSEL_MASK,               \
 456         .enable_reg     = S2MPS13_REG_B1CTRL + (num) * 2 - 1,   \
 457         .enable_mask    = S2MPS14_ENABLE_MASK                   \
 458 }
 459
 460 static const struct regulator_desc s2mps13_regulators[] = {
 461         regulator_desc_s2mps13_ldo(1,  MIN_800_MV,  STEP_12_5_MV, 0x00),
 462         regulator_desc_s2mps13_ldo(2,  MIN_1400_MV, STEP_50_MV,   0x0C),
 463         regulator_desc_s2mps13_ldo(3,  MIN_1000_MV, STEP_25_MV,   0x08),
 464         regulator_desc_s2mps13_ldo(4,  MIN_800_MV,  STEP_12_5_MV, 0x00),
 465         regulator_desc_s2mps13_ldo(5,  MIN_800_MV,  STEP_12_5_MV, 0x00),
 466         regulator_desc_s2mps13_ldo(6,  MIN_800_MV,  STEP_12_5_MV, 0x00),
 467         regulator_desc_s2mps13_ldo(7,  MIN_1000_MV, STEP_25_MV,   0x08),
 468         regulator_desc_s2mps13_ldo(8,  MIN_1000_MV, STEP_25_MV,   0x08),
 469         regulator_desc_s2mps13_ldo(9,  MIN_1000_MV, STEP_25_MV,   0x08),
 470         regulator_desc_s2mps13_ldo(10, MIN_1400_MV, STEP_50_MV,   0x0C),
 471         regulator_desc_s2mps13_ldo(11, MIN_800_MV,  STEP_25_MV,   0x10),
 472         regulator_desc_s2mps13_ldo(12, MIN_800_MV,  STEP_25_MV,   0x10),
 473         regulator_desc_s2mps13_ldo(13, MIN_800_MV,  STEP_25_MV,   0x10),
 474         regulator_desc_s2mps13_ldo(14, MIN_800_MV,  STEP_12_5_MV, 0x00),
 475         regulator_desc_s2mps13_ldo(15, MIN_800_MV,  STEP_12_5_MV, 0x00),
 476         regulator_desc_s2mps13_ldo(16, MIN_1400_MV, STEP_50_MV,   0x0C),
 477         regulator_desc_s2mps13_ldo(17, MIN_1400_MV, STEP_50_MV,   0x0C),
 478         regulator_desc_s2mps13_ldo(18, MIN_1000_MV, STEP_25_MV,   0x08),
 479         regulator_desc_s2mps13_ldo(19, MIN_1000_MV, STEP_25_MV,   0x08),
 480         regulator_desc_s2mps13_ldo(20, MIN_1400_MV, STEP_50_MV,   0x0C),
 481         regulator_desc_s2mps13_ldo(21, MIN_1000_MV, STEP_25_MV,   0x08),
 482         regulator_desc_s2mps13_ldo(22, MIN_1000_MV, STEP_25_MV,   0x08),
 483         regulator_desc_s2mps13_ldo(23, MIN_800_MV,  STEP_12_5_MV, 0x00),
 484         regulator_desc_s2mps13_ldo(24, MIN_800_MV,  STEP_12_5_MV, 0x00),
 485         regulator_desc_s2mps13_ldo(25, MIN_1400_MV, STEP_50_MV,   0x0C),
 486         regulator_desc_s2mps13_ldo(26, MIN_1400_MV, STEP_50_MV,   0x0C),
 487         regulator_desc_s2mps13_ldo(27, MIN_1400_MV, STEP_50_MV,   0x0C),
 488         regulator_desc_s2mps13_ldo(28, MIN_1000_MV, STEP_25_MV,   0x08),
 489         regulator_desc_s2mps13_ldo(29, MIN_1400_MV, STEP_50_MV,   0x0C),
 490         regulator_desc_s2mps13_ldo(30, MIN_1400_MV, STEP_50_MV,   0x0C),
 491         regulator_desc_s2mps13_ldo(31, MIN_1000_MV, STEP_25_MV,   0x08),
 492         regulator_desc_s2mps13_ldo(32, MIN_1000_MV, STEP_25_MV,   0x08),
 493         regulator_desc_s2mps13_ldo(33, MIN_1400_MV, STEP_50_MV,   0x0C),
 494         regulator_desc_s2mps13_ldo(34, MIN_1000_MV, STEP_25_MV,   0x08),
 495         regulator_desc_s2mps13_ldo(35, MIN_1400_MV, STEP_50_MV,   0x0C),
 496         regulator_desc_s2mps13_ldo(36, MIN_800_MV,  STEP_12_5_MV, 0x00),
 497         regulator_desc_s2mps13_ldo(37, MIN_1000_MV, STEP_25_MV,   0x08),
 498         regulator_desc_s2mps13_ldo(38, MIN_1400_MV, STEP_50_MV,   0x0C),
 499         regulator_desc_s2mps13_ldo(39, MIN_1000_MV, STEP_25_MV,   0x08),
 500         regulator_desc_s2mps13_ldo(40, MIN_1400_MV, STEP_50_MV,   0x0C),
 501         regulator_desc_s2mps13_buck(1,  MIN_500_MV,  STEP_6_25_MV, 0x10),
 502         regulator_desc_s2mps13_buck(2,  MIN_500_MV,  STEP_6_25_MV, 0x10),
 503         regulator_desc_s2mps13_buck(3,  MIN_500_MV,  STEP_6_25_MV, 0x10),
 504         regulator_desc_s2mps13_buck(4,  MIN_500_MV,  STEP_6_25_MV, 0x10),
 505         regulator_desc_s2mps13_buck(5,  MIN_500_MV,  STEP_6_25_MV, 0x10),
 506         regulator_desc_s2mps13_buck(6,  MIN_500_MV,  STEP_6_25_MV, 0x10),
 507         regulator_desc_s2mps13_buck7(7,  MIN_500_MV,  STEP_6_25_MV, 0x10),
 508         regulator_desc_s2mps13_buck8_10(8,  MIN_1000_MV, STEP_12_5_MV, 0x20),
 509         regulator_desc_s2mps13_buck8_10(9,  MIN_1000_MV, STEP_12_5_MV, 0x20),
 510         regulator_desc_s2mps13_buck8_10(10, MIN_500_MV,  STEP_6_25_MV, 0x10),
 511 };
 512
 513 static int s2mps14_regulator_enable(struct regulator_dev *rdev)
 514 {
 515         struct s2mps11_info *s2mps11 = rdev_get_drvdata(rdev);
 516         unsigned int val;
 517
 518         switch (s2mps11->dev_type) {
 519         case S2MPS13X:
 520         case S2MPS14X:
 521                 if (test_bit(rdev_get_id(rdev), s2mps11->suspend_state))
 522                         val = S2MPS14_ENABLE_SUSPEND;
 523                 else if (gpio_is_valid(s2mps11->ext_control_gpio[rdev_get_id(rdev)]))
 524                         val = S2MPS14_ENABLE_EXT_CONTROL;
 525                 else
 526                         val = rdev->desc->enable_mask;
 527                 break;
 528         case S2MPU02:
 529                 if (test_bit(rdev_get_id(rdev), s2mps11->suspend_state))
 530                         val = S2MPU02_ENABLE_SUSPEND;
 531                 else
 532                         val = rdev->desc->enable_mask;
 533                 break;
 534         default:
 535                 return -EINVAL;
 536         }
 537
 538         return regmap_update_bits(rdev->regmap, rdev->desc->enable_reg,
 539                         rdev->desc->enable_mask, val);
 540 }
 541
 542 static int s2mps14_regulator_set_suspend_disable(struct regulator_dev *rdev)
 543 {
 544         int ret;
 545         unsigned int val, state;
 546         struct s2mps11_info *s2mps11 = rdev_get_drvdata(rdev);
 547         int rdev_id = rdev_get_id(rdev);
 548
 549         /* Below LDO should be always on or does not support suspend mode. */
 550         switch (s2mps11->dev_type) {
 551         case S2MPS13X:
 552         case S2MPS14X:
 553                 switch (rdev_id) {
 554                 case S2MPS14_LDO3:
 555                         return 0;
 556                 default:
 557                         state = S2MPS14_ENABLE_SUSPEND;
 558                         break;
 559                 }
 560                 break;
 561         case S2MPU02:
 562                 switch (rdev_id) {
 563                 case S2MPU02_LDO13:
 564                 case S2MPU02_LDO14:
 565                 case S2MPU02_LDO15:
 566                 case S2MPU02_LDO17:
 567                 case S2MPU02_BUCK7:
 568                         state = S2MPU02_DISABLE_SUSPEND;
 569                         break;
 570                 default:
 571                         state = S2MPU02_ENABLE_SUSPEND;
 572                         break;
 573                 }
 574                 break;
 575         default:
 576                 return -EINVAL;
 577         }
 578
 579         ret = regmap_read(rdev->regmap, rdev->desc->enable_reg, &val);
 580         if (ret < 0)
 581                 return ret;
 582
 583         set_bit(rdev_get_id(rdev), s2mps11->suspend_state);
 584         /*
 585          * Don't enable suspend mode if regulator is already disabled because
 586          * this would effectively for a short time turn on the regulator after
 587          * resuming.
 588          * However we still want to toggle the suspend_state bit for regulator
 589          * in case if it got enabled before suspending the system.
 590          */
 591         if (!(val & rdev->desc->enable_mask))
 592                 return 0;
 593
 594         return regmap_update_bits(rdev->regmap, rdev->desc->enable_reg,
 595                         rdev->desc->enable_mask, state);
 596 }
 597
 598 static struct regulator_ops s2mps14_reg_ops = {
 599         .list_voltage           = regulator_list_voltage_linear,
 600         .map_voltage            = regulator_map_voltage_linear,
 601         .is_enabled             = regulator_is_enabled_regmap,
 602         .enable                 = s2mps14_regulator_enable,
 603         .disable                = regulator_disable_regmap,
 604         .get_voltage_sel        = regulator_get_voltage_sel_regmap,
 605         .set_voltage_sel        = regulator_set_voltage_sel_regmap,
 606         .set_voltage_time_sel   = regulator_set_voltage_time_sel,
 607         .set_suspend_disable    = s2mps14_regulator_set_suspend_disable,
 608 };
 609
 610 #define regulator_desc_s2mps14_ldo(num, min, step) {    \
 611         .name           = "LDO"#num,                    \
 612         .id             = S2MPS14_LDO##num,             \
 613         .ops            = &s2mps14_reg_ops,             \
 614         .type           = REGULATOR_VOLTAGE,            \
 615         .owner          = THIS_MODULE,                  \
 616         .min_uV         = min,                          \
 617         .uV_step        = step,                         \
 618         .n_voltages     = S2MPS14_LDO_N_VOLTAGES,       \
 619         .vsel_reg       = S2MPS14_REG_L1CTRL + num - 1, \
 620         .vsel_mask      = S2MPS14_LDO_VSEL_MASK,        \
 621         .enable_reg     = S2MPS14_REG_L1CTRL + num - 1, \
 622         .enable_mask    = S2MPS14_ENABLE_MASK           \
 623 }
 624
 625 #define regulator_desc_s2mps14_buck(num, min, step, min_sel) {  \
 626         .name           = "BUCK"#num,                           \
 627         .id             = S2MPS14_BUCK##num,                    \
 628         .ops            = &s2mps14_reg_ops,                     \
 629         .type           = REGULATOR_VOLTAGE,                    \
 630         .owner          = THIS_MODULE,                          \
 631         .min_uV         = min,                                  \
 632         .uV_step        = step,                                 \
 633         .n_voltages     = S2MPS14_BUCK_N_VOLTAGES,              \
 634         .linear_min_sel = min_sel,                              \
 635         .ramp_delay     = S2MPS14_BUCK_RAMP_DELAY,              \
 636         .vsel_reg       = S2MPS14_REG_B1CTRL2 + (num - 1) * 2,  \
 637         .vsel_mask      = S2MPS14_BUCK_VSEL_MASK,               \
 638         .enable_reg     = S2MPS14_REG_B1CTRL1 + (num - 1) * 2,  \
 639         .enable_mask    = S2MPS14_ENABLE_MASK                   \
 640 }
 641
 642 static const struct regulator_desc s2mps14_regulators[] = {
 643         regulator_desc_s2mps14_ldo(1, MIN_800_MV, STEP_12_5_MV),
 644         regulator_desc_s2mps14_ldo(2, MIN_800_MV, STEP_12_5_MV),
 645         regulator_desc_s2mps14_ldo(3, MIN_800_MV, STEP_25_MV),
 646         regulator_desc_s2mps14_ldo(4, MIN_800_MV, STEP_25_MV),
 647         regulator_desc_s2mps14_ldo(5, MIN_800_MV, STEP_12_5_MV),
 648         regulator_desc_s2mps14_ldo(6, MIN_800_MV, STEP_12_5_MV),
 649         regulator_desc_s2mps14_ldo(7, MIN_800_MV, STEP_25_MV),
 650         regulator_desc_s2mps14_ldo(8, MIN_1800_MV, STEP_25_MV),
 651         regulator_desc_s2mps14_ldo(9, MIN_800_MV, STEP_12_5_MV),
 652         regulator_desc_s2mps14_ldo(10, MIN_800_MV, STEP_12_5_MV),
 653         regulator_desc_s2mps14_ldo(11, MIN_800_MV, STEP_25_MV),
 654         regulator_desc_s2mps14_ldo(12, MIN_1800_MV, STEP_25_MV),
 655         regulator_desc_s2mps14_ldo(13, MIN_1800_MV, STEP_25_MV),
 656         regulator_desc_s2mps14_ldo(14, MIN_1800_MV, STEP_25_MV),
 657         regulator_desc_s2mps14_ldo(15, MIN_1800_MV, STEP_25_MV),
 658         regulator_desc_s2mps14_ldo(16, MIN_1800_MV, STEP_25_MV),
 659         regulator_desc_s2mps14_ldo(17, MIN_1800_MV, STEP_25_MV),
 660         regulator_desc_s2mps14_ldo(18, MIN_1800_MV, STEP_25_MV),
 661         regulator_desc_s2mps14_ldo(19, MIN_800_MV, STEP_25_MV),
 662         regulator_desc_s2mps14_ldo(20, MIN_800_MV, STEP_25_MV),
 663         regulator_desc_s2mps14_ldo(21, MIN_800_MV, STEP_25_MV),
 664         regulator_desc_s2mps14_ldo(22, MIN_800_MV, STEP_12_5_MV),
 665         regulator_desc_s2mps14_ldo(23, MIN_800_MV, STEP_25_MV),
 666         regulator_desc_s2mps14_ldo(24, MIN_1800_MV, STEP_25_MV),
 667         regulator_desc_s2mps14_ldo(25, MIN_1800_MV, STEP_25_MV),
 668         regulator_desc_s2mps14_buck(1, MIN_600_MV, STEP_6_25_MV,
 669                                     S2MPS14_BUCK1235_START_SEL),
 670         regulator_desc_s2mps14_buck(2, MIN_600_MV, STEP_6_25_MV,
 671                                     S2MPS14_BUCK1235_START_SEL),
 672         regulator_desc_s2mps14_buck(3, MIN_600_MV, STEP_6_25_MV,
 673                                     S2MPS14_BUCK1235_START_SEL),
 674         regulator_desc_s2mps14_buck(4, MIN_1400_MV, STEP_12_5_MV,
 675                                     S2MPS14_BUCK4_START_SEL),
 676         regulator_desc_s2mps14_buck(5, MIN_600_MV, STEP_6_25_MV,
 677                                     S2MPS14_BUCK1235_START_SEL),
 678 };
 679
 680 static int s2mps14_pmic_enable_ext_control(struct s2mps11_info *s2mps11,
 681                 struct regulator_dev *rdev)
 682 {
 683         return regmap_update_bits(rdev->regmap, rdev->desc->enable_reg,
 684                         rdev->desc->enable_mask, S2MPS14_ENABLE_EXT_CONTROL);
 685 }
 686
 687 static void s2mps14_pmic_dt_parse_ext_control_gpio(struct platform_device *pdev,
 688                 struct of_regulator_match *rdata, struct s2mps11_info *s2mps11)
 689 {
 690         int *gpio = s2mps11->ext_control_gpio;
 691         unsigned int i;
 692         unsigned int valid_regulators[3] = { S2MPS14_LDO10, S2MPS14_LDO11,
 693                 S2MPS14_LDO12 };
 694
 695         for (i = 0; i < ARRAY_SIZE(valid_regulators); i++) {
 696                 unsigned int reg = valid_regulators[i];
 697
 698                 if (!rdata[reg].init_data || !rdata[reg].of_node)
 699                         continue;
 700
 701                 gpio[reg] = of_get_named_gpio(rdata[reg].of_node,
 702                                 "samsung,ext-control-gpios", 0);
 703                 if (gpio_is_valid(gpio[reg]))
 704                         dev_dbg(&pdev->dev, "Using GPIO %d for ext-control over %d/%s\n",
 705                                         gpio[reg], reg, rdata[reg].name);
 706         }
 707 }
 708
 709 static int s2mps11_pmic_dt_parse(struct platform_device *pdev,
 710                 struct of_regulator_match *rdata, struct s2mps11_info *s2mps11)
 711 {
 712         struct device_node *reg_np;
 713
 714         reg_np = of_get_child_by_name(pdev->dev.parent->of_node, "regulators");
 715         if (!reg_np) {
 716                 dev_err(&pdev->dev, "could not find regulators sub-node\n");
 717                 return -EINVAL;
 718         }
 719
 720         of_regulator_match(&pdev->dev, reg_np, rdata, s2mps11->rdev_num);
 721         if (s2mps11->dev_type == S2MPS14X)
 722                 s2mps14_pmic_dt_parse_ext_control_gpio(pdev, rdata, s2mps11);
 723
 724         of_node_put(reg_np);
 725
 726         return 0;
 727 }
 728
 729 static int s2mpu02_set_ramp_delay(struct regulator_dev *rdev, int ramp_delay)
 730 {
 731         unsigned int ramp_val, ramp_shift, ramp_reg;
 732
 733         switch (rdev_get_id(rdev)) {
 734         case S2MPU02_BUCK1:
 735                 ramp_shift = S2MPU02_BUCK1_RAMP_SHIFT;
 736                 break;
 737         case S2MPU02_BUCK2:
 738                 ramp_shift = S2MPU02_BUCK2_RAMP_SHIFT;
 739                 break;
 740         case S2MPU02_BUCK3:
 741                 ramp_shift = S2MPU02_BUCK3_RAMP_SHIFT;
 742                 break;
 743         case S2MPU02_BUCK4:
 744                 ramp_shift = S2MPU02_BUCK4_RAMP_SHIFT;
 745                 break;
 746         default:
 747                 return 0;
 748         }
 749         ramp_reg = S2MPU02_REG_RAMP1;
 750         ramp_val = get_ramp_delay(ramp_delay);
 751
 752         return regmap_update_bits(rdev->regmap, ramp_reg,
 753                                   S2MPU02_BUCK1234_RAMP_MASK << ramp_shift,
 754                                   ramp_val << ramp_shift);
 755 }
 756
 757 static struct regulator_ops s2mpu02_ldo_ops = {
 758         .list_voltage           = regulator_list_voltage_linear,
 759         .map_voltage            = regulator_map_voltage_linear,
 760         .is_enabled             = regulator_is_enabled_regmap,
 761         .enable                 = s2mps14_regulator_enable,
 762         .disable                = regulator_disable_regmap,
 763         .get_voltage_sel        = regulator_get_voltage_sel_regmap,
 764         .set_voltage_sel        = regulator_set_voltage_sel_regmap,
 765         .set_voltage_time_sel   = regulator_set_voltage_time_sel,
 766         .set_suspend_disable    = s2mps14_regulator_set_suspend_disable,
 767 };
 768
 769 static struct regulator_ops s2mpu02_buck_ops = {
 770         .list_voltage           = regulator_list_voltage_linear,
 771         .map_voltage            = regulator_map_voltage_linear,
 772         .is_enabled             = regulator_is_enabled_regmap,
 773         .enable                 = s2mps14_regulator_enable,
 774         .disable                = regulator_disable_regmap,
 775         .get_voltage_sel        = regulator_get_voltage_sel_regmap,
 776         .set_voltage_sel        = regulator_set_voltage_sel_regmap,
 777         .set_voltage_time_sel   = regulator_set_voltage_time_sel,
 778         .set_suspend_disable    = s2mps14_regulator_set_suspend_disable,
 779         .set_ramp_delay         = s2mpu02_set_ramp_delay,
 780 };
 781
 782 #define regulator_desc_s2mpu02_ldo1(num) {              \
 783         .name           = "LDO"#num,                    \
 784         .id             = S2MPU02_LDO##num,             \
 785         .ops            = &s2mpu02_ldo_ops,             \
 786         .type           = REGULATOR_VOLTAGE,            \
 787         .owner          = THIS_MODULE,                  \
 788         .min_uV         = S2MPU02_LDO_MIN_900MV,        \
 789         .uV_step        = S2MPU02_LDO_STEP_12_5MV,      \
 790         .linear_min_sel = S2MPU02_LDO_GROUP1_START_SEL, \
 791         .n_voltages     = S2MPU02_LDO_N_VOLTAGES,       \
 792         .vsel_reg       = S2MPU02_REG_L1CTRL,           \
 793         .vsel_mask      = S2MPU02_LDO_VSEL_MASK,        \
 794         .enable_reg     = S2MPU02_REG_L1CTRL,           \
 795         .enable_mask    = S2MPU02_ENABLE_MASK           \
 796 }
 797 #define regulator_desc_s2mpu02_ldo2(num) {              \
 798         .name           = "LDO"#num,                    \
 799         .id             = S2MPU02_LDO##num,             \
 800         .ops            = &s2mpu02_ldo_ops,             \
 801         .type           = REGULATOR_VOLTAGE,            \
 802         .owner          = THIS_MODULE,                  \
 803         .min_uV         = S2MPU02_LDO_MIN_1050MV,       \
 804         .uV_step        = S2MPU02_LDO_STEP_25MV,        \
 805         .linear_min_sel = S2MPU02_LDO_GROUP2_START_SEL, \
 806         .n_voltages     = S2MPU02_LDO_N_VOLTAGES,       \
 807         .vsel_reg       = S2MPU02_REG_L2CTRL1,          \
 808         .vsel_mask      = S2MPU02_LDO_VSEL_MASK,        \
 809         .enable_reg     = S2MPU02_REG_L2CTRL1,          \
 810         .enable_mask    = S2MPU02_ENABLE_MASK           \
 811 }
 812 #define regulator_desc_s2mpu02_ldo3(num) {              \
 813         .name           = "LDO"#num,                    \
 814         .id             = S2MPU02_LDO##num,             \
 815         .ops            = &s2mpu02_ldo_ops,             \
 816         .type           = REGULATOR_VOLTAGE,            \
 817         .owner          = THIS_MODULE,                  \
 818         .min_uV         = S2MPU02_LDO_MIN_900MV,        \
 819         .uV_step        = S2MPU02_LDO_STEP_12_5MV,      \
 820         .linear_min_sel = S2MPU02_LDO_GROUP1_START_SEL, \
 821         .n_voltages     = S2MPU02_LDO_N_VOLTAGES,       \
 822         .vsel_reg       = S2MPU02_REG_L3CTRL + num - 3, \
 823         .vsel_mask      = S2MPU02_LDO_VSEL_MASK,        \
 824         .enable_reg     = S2MPU02_REG_L3CTRL + num - 3, \
 825         .enable_mask    = S2MPU02_ENABLE_MASK           \
 826 }
 827 #define regulator_desc_s2mpu02_ldo4(num) {              \
 828         .name           = "LDO"#num,                    \
 829         .id             = S2MPU02_LDO##num,             \
 830         .ops            = &s2mpu02_ldo_ops,             \
 831         .type           = REGULATOR_VOLTAGE,            \
 832         .owner          = THIS_MODULE,                  \
 833         .min_uV         = S2MPU02_LDO_MIN_1050MV,       \
 834         .uV_step        = S2MPU02_LDO_STEP_25MV,        \
 835         .linear_min_sel = S2MPU02_LDO_GROUP2_START_SEL, \
 836         .n_voltages     = S2MPU02_LDO_N_VOLTAGES,       \
 837         .vsel_reg       = S2MPU02_REG_L3CTRL + num - 3, \
 838         .vsel_mask      = S2MPU02_LDO_VSEL_MASK,        \
 839         .enable_reg     = S2MPU02_REG_L3CTRL + num - 3, \
 840         .enable_mask    = S2MPU02_ENABLE_MASK           \
 841 }
 842 #define regulator_desc_s2mpu02_ldo5(num) {              \
 843         .name           = "LDO"#num,                    \
 844         .id             = S2MPU02_LDO##num,             \
 845         .ops            = &s2mpu02_ldo_ops,             \
 846         .type           = REGULATOR_VOLTAGE,            \
 847         .owner          = THIS_MODULE,                  \
 848         .min_uV         = S2MPU02_LDO_MIN_1600MV,       \
 849         .uV_step        = S2MPU02_LDO_STEP_50MV,        \
 850         .linear_min_sel = S2MPU02_LDO_GROUP3_START_SEL, \
 851         .n_voltages     = S2MPU02_LDO_N_VOLTAGES,       \
 852         .vsel_reg       = S2MPU02_REG_L3CTRL + num - 3, \
 853         .vsel_mask      = S2MPU02_LDO_VSEL_MASK,        \
 854         .enable_reg     = S2MPU02_REG_L3CTRL + num - 3, \
 855         .enable_mask    = S2MPU02_ENABLE_MASK           \
 856 }
 857
 858 #define regulator_desc_s2mpu02_buck1234(num) {                  \
 859         .name           = "BUCK"#num,                           \
 860         .id             = S2MPU02_BUCK##num,                    \
 861         .ops            = &s2mpu02_buck_ops,                    \
 862         .type           = REGULATOR_VOLTAGE,                    \
 863         .owner          = THIS_MODULE,                          \
 864         .min_uV         = S2MPU02_BUCK1234_MIN_600MV,           \
 865         .uV_step        = S2MPU02_BUCK1234_STEP_6_25MV,         \
 866         .n_voltages     = S2MPU02_BUCK_N_VOLTAGES,              \
 867         .linear_min_sel = S2MPU02_BUCK1234_START_SEL,           \
 868         .ramp_delay     = S2MPU02_BUCK_RAMP_DELAY,              \
 869         .vsel_reg       = S2MPU02_REG_B1CTRL2 + (num - 1) * 2,  \
 870         .vsel_mask      = S2MPU02_BUCK_VSEL_MASK,               \
 871         .enable_reg     = S2MPU02_REG_B1CTRL1 + (num - 1) * 2,  \
 872         .enable_mask    = S2MPU02_ENABLE_MASK                   \
 873 }
 874 #define regulator_desc_s2mpu02_buck5(num) {                     \
 875         .name           = "BUCK"#num,                           \
 876         .id             = S2MPU02_BUCK##num,                    \
 877         .ops            = &s2mpu02_ldo_ops,                     \
 878         .type           = REGULATOR_VOLTAGE,                    \
 879         .owner          = THIS_MODULE,                          \
 880         .min_uV         = S2MPU02_BUCK5_MIN_1081_25MV,          \
 881         .uV_step        = S2MPU02_BUCK5_STEP_6_25MV,            \
 882         .n_voltages     = S2MPU02_BUCK_N_VOLTAGES,              \
 883         .linear_min_sel = S2MPU02_BUCK5_START_SEL,              \
 884         .ramp_delay     = S2MPU02_BUCK_RAMP_DELAY,              \
 885         .vsel_reg       = S2MPU02_REG_B5CTRL2,                  \
 886         .vsel_mask      = S2MPU02_BUCK_VSEL_MASK,               \
 887         .enable_reg     = S2MPU02_REG_B5CTRL1,                  \
 888         .enable_mask    = S2MPU02_ENABLE_MASK                   \
 889 }
 890 #define regulator_desc_s2mpu02_buck6(num) {                     \
 891         .name           = "BUCK"#num,                           \
 892         .id             = S2MPU02_BUCK##num,                    \
 893         .ops            = &s2mpu02_ldo_ops,                     \
 894         .type           = REGULATOR_VOLTAGE,                    \
 895         .owner          = THIS_MODULE,                          \
 896         .min_uV         = S2MPU02_BUCK6_MIN_1700MV,             \
 897         .uV_step        = S2MPU02_BUCK6_STEP_2_50MV,            \
 898         .n_voltages     = S2MPU02_BUCK_N_VOLTAGES,              \
 899         .linear_min_sel = S2MPU02_BUCK6_START_SEL,              \
 900         .ramp_delay     = S2MPU02_BUCK_RAMP_DELAY,              \
 901         .vsel_reg       = S2MPU02_REG_B6CTRL2,                  \
 902         .vsel_mask      = S2MPU02_BUCK_VSEL_MASK,               \
 903         .enable_reg     = S2MPU02_REG_B6CTRL1,                  \
 904         .enable_mask    = S2MPU02_ENABLE_MASK                   \
 905 }
 906 #define regulator_desc_s2mpu02_buck7(num) {                     \
 907         .name           = "BUCK"#num,                           \
 908         .id             = S2MPU02_BUCK##num,                    \
 909         .ops            = &s2mpu02_ldo_ops,                     \
 910         .type           = REGULATOR_VOLTAGE,                    \
 911         .owner          = THIS_MODULE,                          \
 912         .min_uV         = S2MPU02_BUCK7_MIN_900MV,              \
 913         .uV_step        = S2MPU02_BUCK7_STEP_6_25MV,            \
 914         .n_voltages     = S2MPU02_BUCK_N_VOLTAGES,              \
 915         .linear_min_sel = S2MPU02_BUCK7_START_SEL,              \
 916         .ramp_delay     = S2MPU02_BUCK_RAMP_DELAY,              \
 917         .vsel_reg       = S2MPU02_REG_B7CTRL2,                  \
 918         .vsel_mask      = S2MPU02_BUCK_VSEL_MASK,               \
 919         .enable_reg     = S2MPU02_REG_B7CTRL1,                  \
 920         .enable_mask    = S2MPU02_ENABLE_MASK                   \
 921 }
 922
 923 static const struct regulator_desc s2mpu02_regulators[] = {
 924         regulator_desc_s2mpu02_ldo1(1),
 925         regulator_desc_s2mpu02_ldo2(2),
 926         regulator_desc_s2mpu02_ldo4(3),
 927         regulator_desc_s2mpu02_ldo5(4),
 928         regulator_desc_s2mpu02_ldo4(5),
 929         regulator_desc_s2mpu02_ldo3(6),
 930         regulator_desc_s2mpu02_ldo3(7),
 931         regulator_desc_s2mpu02_ldo4(8),
 932         regulator_desc_s2mpu02_ldo5(9),
 933         regulator_desc_s2mpu02_ldo3(10),
 934         regulator_desc_s2mpu02_ldo4(11),
 935         regulator_desc_s2mpu02_ldo5(12),
 936         regulator_desc_s2mpu02_ldo5(13),
 937         regulator_desc_s2mpu02_ldo5(14),
 938         regulator_desc_s2mpu02_ldo5(15),
 939         regulator_desc_s2mpu02_ldo5(16),
 940         regulator_desc_s2mpu02_ldo4(17),
 941         regulator_desc_s2mpu02_ldo5(18),
 942         regulator_desc_s2mpu02_ldo3(19),
 943         regulator_desc_s2mpu02_ldo4(20),
 944         regulator_desc_s2mpu02_ldo5(21),
 945         regulator_desc_s2mpu02_ldo5(22),
 946         regulator_desc_s2mpu02_ldo5(23),
 947         regulator_desc_s2mpu02_ldo4(24),
 948         regulator_desc_s2mpu02_ldo5(25),
 949         regulator_desc_s2mpu02_ldo4(26),
 950         regulator_desc_s2mpu02_ldo5(27),
 951         regulator_desc_s2mpu02_ldo5(28),
 952         regulator_desc_s2mpu02_buck1234(1),
 953         regulator_desc_s2mpu02_buck1234(2),
 954         regulator_desc_s2mpu02_buck1234(3),
 955         regulator_desc_s2mpu02_buck1234(4),
 956         regulator_desc_s2mpu02_buck5(5),
 957         regulator_desc_s2mpu02_buck6(6),
 958         regulator_desc_s2mpu02_buck7(7),
 959 };
 960
 961 static int s2mps11_pmic_probe(struct platform_device *pdev)
 962 {
 963         struct sec_pmic_dev *iodev = dev_get_drvdata(pdev->dev.parent);
 964         struct sec_platform_data *pdata = NULL;
 965         struct of_regulator_match *rdata = NULL;
 966         struct regulator_config config = { };
 967         struct s2mps11_info *s2mps11;
 968         int i, ret = 0;
 969         const struct regulator_desc *regulators;
 970
 971         s2mps11 = devm_kzalloc(&pdev->dev, sizeof(struct s2mps11_info),
 972                                 GFP_KERNEL);
 973         if (!s2mps11)
 974                 return -ENOMEM;
 975
 976         s2mps11->dev_type = platform_get_device_id(pdev)->driver_data;
 977         switch (s2mps11->dev_type) {
 978         case S2MPS11X:
 979                 s2mps11->rdev_num = ARRAY_SIZE(s2mps11_regulators);
 980                 regulators = s2mps11_regulators;
 981                 BUILD_BUG_ON(S2MPS_REGULATOR_MAX < s2mps11->rdev_num);
 982                 break;
 983         case S2MPS13X:
 984                 s2mps11->rdev_num = ARRAY_SIZE(s2mps13_regulators);
 985                 regulators = s2mps13_regulators;
 986                 BUILD_BUG_ON(S2MPS_REGULATOR_MAX < s2mps11->rdev_num);
 987                 break;
 988         case S2MPS14X:
 989                 s2mps11->rdev_num = ARRAY_SIZE(s2mps14_regulators);
 990                 regulators = s2mps14_regulators;
 991                 BUILD_BUG_ON(S2MPS_REGULATOR_MAX < s2mps11->rdev_num);
 992                 break;
 993         case S2MPU02:
 994                 s2mps11->rdev_num = ARRAY_SIZE(s2mpu02_regulators);
 995                 regulators = s2mpu02_regulators;
 996                 BUILD_BUG_ON(S2MPS_REGULATOR_MAX < s2mps11->rdev_num);
 997                 break;
 998         default:
 999                 dev_err(&pdev->dev, "Invalid device type: %u\n",
1000                                     s2mps11->dev_type);
1001                 return -EINVAL;
1002         }
1003
1004         s2mps11->ext_control_gpio = devm_kmalloc(&pdev->dev,
1005                         sizeof(*s2mps11->ext_control_gpio) * s2mps11->rdev_num,
1006                         GFP_KERNEL);
1007         if (!s2mps11->ext_control_gpio)
1008                 return -ENOMEM;
1009         /*
1010          * 0 is a valid GPIO so initialize all GPIO-s to negative value
1011          * to indicate that external control won't be used for this regulator.
1012          */
1013         for (i = 0; i < s2mps11->rdev_num; i++)
1014                 s2mps11->ext_control_gpio[i] = -EINVAL;
1015
1016         if (!iodev->dev->of_node) {
1017                 if (iodev->pdata) {
1018                         pdata = iodev->pdata;
1019                         goto common_reg;
1020                 } else {
1021                         dev_err(pdev->dev.parent,
1022                                 "Platform data or DT node not supplied\n");
1023                         return -ENODEV;
1024                 }
1025         }
1026
1027         rdata = kzalloc(sizeof(*rdata) * s2mps11->rdev_num, GFP_KERNEL);
1028         if (!rdata)
1029                 return -ENOMEM;
1030
1031         for (i = 0; i < s2mps11->rdev_num; i++)
1032                 rdata[i].name = regulators[i].name;
1033
1034         ret = s2mps11_pmic_dt_parse(pdev, rdata, s2mps11);
1035         if (ret)
1036                 goto out;
1037
1038 common_reg:
1039         platform_set_drvdata(pdev, s2mps11);
1040
1041         config.dev = &pdev->dev;
1042         config.regmap = iodev->regmap_pmic;
1043         config.driver_data = s2mps11;
1044         config.ena_gpio_flags = GPIOF_OUT_INIT_HIGH;
1045         config.ena_gpio_initialized = true;
1046         for (i = 0; i < s2mps11->rdev_num; i++) {
1047                 struct regulator_dev *regulator;
1048
1049                 if (pdata) {
1050                         config.init_data = pdata->regulators[i].initdata;
1051                         config.of_node = pdata->regulators[i].reg_node;
1052                 } else {
1053                         config.init_data = rdata[i].init_data;
1054                         config.of_node = rdata[i].of_node;
1055                 }
1056                 config.ena_gpio = s2mps11->ext_control_gpio[i];
1057
1058                 regulator = devm_regulator_register(&pdev->dev,
1059                                                 &regulators[i], &config);
1060                 if (IS_ERR(regulator)) {
1061                         ret = PTR_ERR(regulator);
1062                         dev_err(&pdev->dev, "regulator init failed for %d\n",
1063                                 i);
1064                         goto out;
1065                 }
1066
1067                 if (gpio_is_valid(s2mps11->ext_control_gpio[i])) {
1068                         ret = s2mps14_pmic_enable_ext_control(s2mps11,
1069                                         regulator);
1070                         if (ret < 0) {
1071                                 dev_err(&pdev->dev,
1072                                                 "failed to enable GPIO control over %s: %d\n",
1073                                                 regulator->desc->name, ret);
1074                                 goto out;
1075                         }
1076                 }
1077         }
1078
1079 out:
1080         kfree(rdata);
1081
1082         return ret;
1083 }
1084
1085 static const struct platform_device_id s2mps11_pmic_id[] = {
1086         { "s2mps11-pmic", S2MPS11X},
1087         { "s2mps13-pmic", S2MPS13X},
1088         { "s2mps14-pmic", S2MPS14X},
1089         { "s2mpu02-pmic", S2MPU02},
1090         { },
1091 };
1092 MODULE_DEVICE_TABLE(platform, s2mps11_pmic_id);
1093
1094 static struct platform_driver s2mps11_pmic_driver = {
1095         .driver = {
1096                 .name = "s2mps11-pmic",
1097         },
1098         .probe = s2mps11_pmic_probe,
1099         .id_table = s2mps11_pmic_id,
1100 };
1101
1102 static int __init s2mps11_pmic_init(void)
1103 {
1104         return platform_driver_register(&s2mps11_pmic_driver);
1105 }
1106 subsys_initcall(s2mps11_pmic_init);
1107
1108 static void __exit s2mps11_pmic_exit(void)
1109 {
1110         platform_driver_unregister(&s2mps11_pmic_driver);
1111 }
1112 module_exit(s2mps11_pmic_exit);
1113
1114 /* Module information */
1115 MODULE_AUTHOR("Sangbeom Kim <sbkim73@samsung.com>");
1116 MODULE_DESCRIPTION("SAMSUNG S2MPS11/S2MPS14/S2MPU02 Regulator Driver");
1117 MODULE_LICENSE("GPL");