drivers/regulator/s2mps11.c

   1 /*
   2  * s2mps11.c
   3  *
   4  * Copyright (c) 2012-2014 Samsung Electronics Co., Ltd
   5  *              http://www.samsung.com
   6  *
   7  * This program is free software; you can redistribute  it and/or modify it
   8  * under  the terms of  the GNU General  Public License as published by the
   9  * Free Software Foundation;  either version 2 of the  License, or (at your
  10  * option) any later version.
  11  *
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU General Public License for more details.
  16  *
  17  */
  18
  19 #include <linux/bug.h>
  20 #include <linux/err.h>
  21 #include <linux/gpio.h>
  22 #include <linux/slab.h>
  23 #include <linux/module.h>
  24 #include <linux/of.h>
  25 #include <linux/regmap.h>
  26 #include <linux/platform_device.h>
  27 #include <linux/regulator/driver.h>
  28 #include <linux/regulator/machine.h>
  29 #include <linux/regulator/of_regulator.h>
  30 #include <linux/of_gpio.h>
  31 #include <linux/mfd/samsung/core.h>
  32 #include <linux/mfd/samsung/s2mps11.h>
  33 #include <linux/mfd/samsung/s2mps13.h>
  34 #include <linux/mfd/samsung/s2mps14.h>
  35 #include <linux/mfd/samsung/s2mps15.h>
  36 #include <linux/mfd/samsung/s2mpu02.h>
  37
  38 /* The highest number of possible regulators for supported devices. */
  39 #define S2MPS_REGULATOR_MAX             S2MPS13_REGULATOR_MAX
  40 struct s2mps11_info {
  41         int ramp_delay2;
  42         int ramp_delay34;
  43         int ramp_delay5;
  44         int ramp_delay16;
  45         int ramp_delay7810;
  46         int ramp_delay9;
  47
  48         enum sec_device_type dev_type;
  49
  50         /*
  51          * One bit for each S2MPS13/S2MPS14/S2MPU02 regulator whether
  52          * the suspend mode was enabled.
  53          */
  54         DECLARE_BITMAP(suspend_state, S2MPS_REGULATOR_MAX);
  55
  56         /*
  57          * Array (size: number of regulators) with GPIO-s for external
  58          * sleep control.
  59          */
  60         int *ext_control_gpio;
  61 };
  62
  63 static int get_ramp_delay(int ramp_delay)
  64 {
  65         unsigned char cnt = 0;
  66
  67         ramp_delay /= 6250;
  68
  69         while (true) {
  70                 ramp_delay = ramp_delay >> 1;
  71                 if (ramp_delay == 0)
  72                         break;
  73                 cnt++;
  74         }
  75
  76         if (cnt > 3)
  77                 cnt = 3;
  78
  79         return cnt;
  80 }
  81
  82 static int s2mps11_regulator_set_voltage_time_sel(struct regulator_dev *rdev,
  83                                    unsigned int old_selector,
  84                                    unsigned int new_selector)
  85 {
  86         struct s2mps11_info *s2mps11 = rdev_get_drvdata(rdev);
  87         unsigned int ramp_delay = 0;
  88         int old_volt, new_volt;
  89
  90         switch (rdev_get_id(rdev)) {
  91         case S2MPS11_BUCK2:
  92                 ramp_delay = s2mps11->ramp_delay2;
  93                 break;
  94         case S2MPS11_BUCK3:
  95         case S2MPS11_BUCK4:
  96                 ramp_delay = s2mps11->ramp_delay34;
  97                 break;
  98         case S2MPS11_BUCK5:
  99                 ramp_delay = s2mps11->ramp_delay5;
 100                 break;
 101         case S2MPS11_BUCK6:
 102         case S2MPS11_BUCK1:
 103                 ramp_delay = s2mps11->ramp_delay16;
 104                 break;
 105         case S2MPS11_BUCK7:
 106         case S2MPS11_BUCK8:
 107         case S2MPS11_BUCK10:
 108                 ramp_delay = s2mps11->ramp_delay7810;
 109                 break;
 110         case S2MPS11_BUCK9:
 111                 ramp_delay = s2mps11->ramp_delay9;
 112         }
 113
 114         if (ramp_delay == 0)
 115                 ramp_delay = rdev->desc->ramp_delay;
 116
 117         old_volt = rdev->desc->min_uV + (rdev->desc->uV_step * old_selector);
 118         new_volt = rdev->desc->min_uV + (rdev->desc->uV_step * new_selector);
 119
 120         return DIV_ROUND_UP(abs(new_volt - old_volt), ramp_delay);
 121 }
 122
 123 static int s2mps11_set_ramp_delay(struct regulator_dev *rdev, int ramp_delay)
 124 {
 125         struct s2mps11_info *s2mps11 = rdev_get_drvdata(rdev);
 126         unsigned int ramp_val, ramp_shift, ramp_reg = S2MPS11_REG_RAMP_BUCK;
 127         unsigned int ramp_enable = 1, enable_shift = 0;
 128         int ret;
 129
 130         switch (rdev_get_id(rdev)) {
 131         case S2MPS11_BUCK1:
 132                 if (ramp_delay > s2mps11->ramp_delay16)
 133                         s2mps11->ramp_delay16 = ramp_delay;
 134                 else
 135                         ramp_delay = s2mps11->ramp_delay16;
 136
 137                 ramp_shift = S2MPS11_BUCK16_RAMP_SHIFT;
 138                 break;
 139         case S2MPS11_BUCK2:
 140                 enable_shift = S2MPS11_BUCK2_RAMP_EN_SHIFT;
 141                 if (!ramp_delay) {
 142                         ramp_enable = 0;
 143                         break;
 144                 }
 145
 146                 s2mps11->ramp_delay2 = ramp_delay;
 147                 ramp_shift = S2MPS11_BUCK2_RAMP_SHIFT;
 148                 ramp_reg = S2MPS11_REG_RAMP;
 149                 break;
 150         case S2MPS11_BUCK3:
 151                 enable_shift = S2MPS11_BUCK3_RAMP_EN_SHIFT;
 152                 if (!ramp_delay) {
 153                         ramp_enable = 0;
 154                         break;
 155                 }
 156
 157                 if (ramp_delay > s2mps11->ramp_delay34)
 158                         s2mps11->ramp_delay34 = ramp_delay;
 159                 else
 160                         ramp_delay = s2mps11->ramp_delay34;
 161
 162                 ramp_shift = S2MPS11_BUCK34_RAMP_SHIFT;
 163                 ramp_reg = S2MPS11_REG_RAMP;
 164                 break;
 165         case S2MPS11_BUCK4:
 166                 enable_shift = S2MPS11_BUCK4_RAMP_EN_SHIFT;
 167                 if (!ramp_delay) {
 168                         ramp_enable = 0;
 169                         break;
 170                 }
 171
 172                 if (ramp_delay > s2mps11->ramp_delay34)
 173                         s2mps11->ramp_delay34 = ramp_delay;
 174                 else
 175                         ramp_delay = s2mps11->ramp_delay34;
 176
 177                 ramp_shift = S2MPS11_BUCK34_RAMP_SHIFT;
 178                 ramp_reg = S2MPS11_REG_RAMP;
 179                 break;
 180         case S2MPS11_BUCK5:
 181                 s2mps11->ramp_delay5 = ramp_delay;
 182                 ramp_shift = S2MPS11_BUCK5_RAMP_SHIFT;
 183                 break;
 184         case S2MPS11_BUCK6:
 185                 enable_shift = S2MPS11_BUCK6_RAMP_EN_SHIFT;
 186                 if (!ramp_delay) {
 187                         ramp_enable = 0;
 188                         break;
 189                 }
 190
 191                 if (ramp_delay > s2mps11->ramp_delay16)
 192                         s2mps11->ramp_delay16 = ramp_delay;
 193                 else
 194                         ramp_delay = s2mps11->ramp_delay16;
 195
 196                 ramp_shift = S2MPS11_BUCK16_RAMP_SHIFT;
 197                 break;
 198         case S2MPS11_BUCK7:
 199         case S2MPS11_BUCK8:
 200         case S2MPS11_BUCK10:
 201                 if (ramp_delay > s2mps11->ramp_delay7810)
 202                         s2mps11->ramp_delay7810 = ramp_delay;
 203                 else
 204                         ramp_delay = s2mps11->ramp_delay7810;
 205
 206                 ramp_shift = S2MPS11_BUCK7810_RAMP_SHIFT;
 207                 break;
 208         case S2MPS11_BUCK9:
 209                 s2mps11->ramp_delay9 = ramp_delay;
 210                 ramp_shift = S2MPS11_BUCK9_RAMP_SHIFT;
 211                 break;
 212         default:
 213                 return 0;
 214         }
 215
 216         if (!ramp_enable)
 217                 goto ramp_disable;
 218
 219         /* Ramp delay can be enabled/disabled only for buck[2346] */
 220         if ((rdev_get_id(rdev) >= S2MPS11_BUCK2 &&
 221                         rdev_get_id(rdev) <= S2MPS11_BUCK4) ||
 222                         rdev_get_id(rdev) == S2MPS11_BUCK6)  {
 223                 ret = regmap_update_bits(rdev->regmap, S2MPS11_REG_RAMP,
 224                                          1 << enable_shift, 1 << enable_shift);
 225                 if (ret) {
 226                         dev_err(&rdev->dev, "failed to enable ramp rate\n");
 227                         return ret;
 228                 }
 229         }
 230
 231         ramp_val = get_ramp_delay(ramp_delay);
 232
 233         return regmap_update_bits(rdev->regmap, ramp_reg, 0x3 << ramp_shift,
 234                                   ramp_val << ramp_shift);
 235
 236 ramp_disable:
 237         return regmap_update_bits(rdev->regmap, S2MPS11_REG_RAMP,
 238                                   1 << enable_shift, 0);
 239 }
 240
 241 static struct regulator_ops s2mps11_ldo_ops = {
 242         .list_voltage           = regulator_list_voltage_linear,
 243         .map_voltage            = regulator_map_voltage_linear,
 244         .is_enabled             = regulator_is_enabled_regmap,
 245         .enable                 = regulator_enable_regmap,
 246         .disable                = regulator_disable_regmap,
 247         .get_voltage_sel        = regulator_get_voltage_sel_regmap,
 248         .set_voltage_sel        = regulator_set_voltage_sel_regmap,
 249         .set_voltage_time_sel   = regulator_set_voltage_time_sel,
 250 };
 251
 252 static struct regulator_ops s2mps11_buck_ops = {
 253         .list_voltage           = regulator_list_voltage_linear,
 254         .map_voltage            = regulator_map_voltage_linear,
 255         .is_enabled             = regulator_is_enabled_regmap,
 256         .enable                 = regulator_enable_regmap,
 257         .disable                = regulator_disable_regmap,
 258         .get_voltage_sel        = regulator_get_voltage_sel_regmap,
 259         .set_voltage_sel        = regulator_set_voltage_sel_regmap,
 260         .set_voltage_time_sel   = s2mps11_regulator_set_voltage_time_sel,
 261         .set_ramp_delay         = s2mps11_set_ramp_delay,
 262 };
 263
 264 #define regulator_desc_s2mps11_ldo(num, step) {         \
 265         .name           = "LDO"#num,                    \
 266         .id             = S2MPS11_LDO##num,             \
 267         .ops            = &s2mps11_ldo_ops,             \
 268         .type           = REGULATOR_VOLTAGE,            \
 269         .owner          = THIS_MODULE,                  \
 270         .min_uV         = MIN_800_MV,                   \
 271         .uV_step        = step,                         \
 272         .n_voltages     = S2MPS11_LDO_N_VOLTAGES,       \
 273         .vsel_reg       = S2MPS11_REG_L1CTRL + num - 1, \
 274         .vsel_mask      = S2MPS11_LDO_VSEL_MASK,        \
 275         .enable_reg     = S2MPS11_REG_L1CTRL + num - 1, \
 276         .enable_mask    = S2MPS11_ENABLE_MASK           \
 277 }
 278
 279 #define regulator_desc_s2mps11_buck1_4(num) {                   \
 280         .name           = "BUCK"#num,                           \
 281         .id             = S2MPS11_BUCK##num,                    \
 282         .ops            = &s2mps11_buck_ops,                    \
 283         .type           = REGULATOR_VOLTAGE,                    \
 284         .owner          = THIS_MODULE,                          \
 285         .min_uV         = MIN_600_MV,                           \
 286         .uV_step        = STEP_6_25_MV,                         \
 287         .n_voltages     = S2MPS11_BUCK_N_VOLTAGES,              \
 288         .ramp_delay     = S2MPS11_RAMP_DELAY,                   \
 289         .vsel_reg       = S2MPS11_REG_B1CTRL2 + (num - 1) * 2,  \
 290         .vsel_mask      = S2MPS11_BUCK_VSEL_MASK,               \
 291         .enable_reg     = S2MPS11_REG_B1CTRL1 + (num - 1) * 2,  \
 292         .enable_mask    = S2MPS11_ENABLE_MASK                   \
 293 }
 294
 295 #define regulator_desc_s2mps11_buck5 {                          \
 296         .name           = "BUCK5",                              \
 297         .id             = S2MPS11_BUCK5,                        \
 298         .ops            = &s2mps11_buck_ops,                    \
 299         .type           = REGULATOR_VOLTAGE,                    \
 300         .owner          = THIS_MODULE,                          \
 301         .min_uV         = MIN_600_MV,                           \
 302         .uV_step        = STEP_6_25_MV,                         \
 303         .n_voltages     = S2MPS11_BUCK_N_VOLTAGES,              \
 304         .ramp_delay     = S2MPS11_RAMP_DELAY,                   \
 305         .vsel_reg       = S2MPS11_REG_B5CTRL2,                  \
 306         .vsel_mask      = S2MPS11_BUCK_VSEL_MASK,               \
 307         .enable_reg     = S2MPS11_REG_B5CTRL1,                  \
 308         .enable_mask    = S2MPS11_ENABLE_MASK                   \
 309 }
 310
 311 #define regulator_desc_s2mps11_buck6_10(num, min, step) {       \
 312         .name           = "BUCK"#num,                           \
 313         .id             = S2MPS11_BUCK##num,                    \
 314         .ops            = &s2mps11_buck_ops,                    \
 315         .type           = REGULATOR_VOLTAGE,                    \
 316         .owner          = THIS_MODULE,                          \
 317         .min_uV         = min,                                  \
 318         .uV_step        = step,                                 \
 319         .n_voltages     = S2MPS11_BUCK_N_VOLTAGES,              \
 320         .ramp_delay     = S2MPS11_RAMP_DELAY,                   \
 321         .vsel_reg       = S2MPS11_REG_B6CTRL2 + (num - 6) * 2,  \
 322         .vsel_mask      = S2MPS11_BUCK_VSEL_MASK,               \
 323         .enable_reg     = S2MPS11_REG_B6CTRL1 + (num - 6) * 2,  \
 324         .enable_mask    = S2MPS11_ENABLE_MASK                   \
 325 }
 326
 327 static const struct regulator_desc s2mps11_regulators[] = {
 328         regulator_desc_s2mps11_ldo(1, STEP_25_MV),
 329         regulator_desc_s2mps11_ldo(2, STEP_50_MV),
 330         regulator_desc_s2mps11_ldo(3, STEP_50_MV),
 331         regulator_desc_s2mps11_ldo(4, STEP_50_MV),
 332         regulator_desc_s2mps11_ldo(5, STEP_50_MV),
 333         regulator_desc_s2mps11_ldo(6, STEP_25_MV),
 334         regulator_desc_s2mps11_ldo(7, STEP_50_MV),
 335         regulator_desc_s2mps11_ldo(8, STEP_50_MV),
 336         regulator_desc_s2mps11_ldo(9, STEP_50_MV),
 337         regulator_desc_s2mps11_ldo(10, STEP_50_MV),
 338         regulator_desc_s2mps11_ldo(11, STEP_25_MV),
 339         regulator_desc_s2mps11_ldo(12, STEP_50_MV),
 340         regulator_desc_s2mps11_ldo(13, STEP_50_MV),
 341         regulator_desc_s2mps11_ldo(14, STEP_50_MV),
 342         regulator_desc_s2mps11_ldo(15, STEP_50_MV),
 343         regulator_desc_s2mps11_ldo(16, STEP_50_MV),
 344         regulator_desc_s2mps11_ldo(17, STEP_50_MV),
 345         regulator_desc_s2mps11_ldo(18, STEP_50_MV),
 346         regulator_desc_s2mps11_ldo(19, STEP_50_MV),
 347         regulator_desc_s2mps11_ldo(20, STEP_50_MV),
 348         regulator_desc_s2mps11_ldo(21, STEP_50_MV),
 349         regulator_desc_s2mps11_ldo(22, STEP_25_MV),
 350         regulator_desc_s2mps11_ldo(23, STEP_25_MV),
 351         regulator_desc_s2mps11_ldo(24, STEP_50_MV),
 352         regulator_desc_s2mps11_ldo(25, STEP_50_MV),
 353         regulator_desc_s2mps11_ldo(26, STEP_50_MV),
 354         regulator_desc_s2mps11_ldo(27, STEP_25_MV),
 355         regulator_desc_s2mps11_ldo(28, STEP_50_MV),
 356         regulator_desc_s2mps11_ldo(29, STEP_50_MV),
 357         regulator_desc_s2mps11_ldo(30, STEP_50_MV),
 358         regulator_desc_s2mps11_ldo(31, STEP_50_MV),
 359         regulator_desc_s2mps11_ldo(32, STEP_50_MV),
 360         regulator_desc_s2mps11_ldo(33, STEP_50_MV),
 361         regulator_desc_s2mps11_ldo(34, STEP_50_MV),
 362         regulator_desc_s2mps11_ldo(35, STEP_50_MV),
 363         regulator_desc_s2mps11_ldo(36, STEP_50_MV),
 364         regulator_desc_s2mps11_ldo(37, STEP_50_MV),
 365         regulator_desc_s2mps11_ldo(38, STEP_50_MV),
 366         regulator_desc_s2mps11_buck1_4(1),
 367         regulator_desc_s2mps11_buck1_4(2),
 368         regulator_desc_s2mps11_buck1_4(3),
 369         regulator_desc_s2mps11_buck1_4(4),
 370         regulator_desc_s2mps11_buck5,
 371         regulator_desc_s2mps11_buck6_10(6, MIN_600_MV, STEP_6_25_MV),
 372         regulator_desc_s2mps11_buck6_10(7, MIN_600_MV, STEP_6_25_MV),
 373         regulator_desc_s2mps11_buck6_10(8, MIN_600_MV, STEP_6_25_MV),
 374         regulator_desc_s2mps11_buck6_10(9, MIN_3000_MV, STEP_25_MV),
 375         regulator_desc_s2mps11_buck6_10(10, MIN_750_MV, STEP_12_5_MV),
 376 };
 377
 378 static struct regulator_ops s2mps14_reg_ops;
 379
 380 #define regulator_desc_s2mps13_ldo(num, min, step, min_sel) {   \
 381         .name           = "LDO"#num,                            \
 382         .id             = S2MPS13_LDO##num,                     \
 383         .ops            = &s2mps14_reg_ops,                     \
 384         .type           = REGULATOR_VOLTAGE,                    \
 385         .owner          = THIS_MODULE,                          \
 386         .min_uV         = min,                                  \
 387         .uV_step        = step,                                 \
 388         .linear_min_sel = min_sel,                              \
 389         .n_voltages     = S2MPS14_LDO_N_VOLTAGES,               \
 390         .vsel_reg       = S2MPS13_REG_L1CTRL + num - 1,         \
 391         .vsel_mask      = S2MPS14_LDO_VSEL_MASK,                \
 392         .enable_reg     = S2MPS13_REG_L1CTRL + num - 1,         \
 393         .enable_mask    = S2MPS14_ENABLE_MASK                   \
 394 }
 395
 396 #define regulator_desc_s2mps13_buck(num, min, step, min_sel) {  \
 397         .name           = "BUCK"#num,                           \
 398         .id             = S2MPS13_BUCK##num,                    \
 399         .ops            = &s2mps14_reg_ops,                     \
 400         .type           = REGULATOR_VOLTAGE,                    \
 401         .owner          = THIS_MODULE,                          \
 402         .min_uV         = min,                                  \
 403         .uV_step        = step,                                 \
 404         .linear_min_sel = min_sel,                              \
 405         .n_voltages     = S2MPS14_BUCK_N_VOLTAGES,              \
 406         .ramp_delay     = S2MPS13_BUCK_RAMP_DELAY,              \
 407         .vsel_reg       = S2MPS13_REG_B1OUT + (num - 1) * 2,    \
 408         .vsel_mask      = S2MPS14_BUCK_VSEL_MASK,               \
 409         .enable_reg     = S2MPS13_REG_B1CTRL + (num - 1) * 2,   \
 410         .enable_mask    = S2MPS14_ENABLE_MASK                   \
 411 }
 412
 413 #define regulator_desc_s2mps13_buck7(num, min, step, min_sel) { \
 414         .name           = "BUCK"#num,                           \
 415         .id             = S2MPS13_BUCK##num,                    \
 416         .ops            = &s2mps14_reg_ops,                     \
 417         .type           = REGULATOR_VOLTAGE,                    \
 418         .owner          = THIS_MODULE,                          \
 419         .min_uV         = min,                                  \
 420         .uV_step        = step,                                 \
 421         .linear_min_sel = min_sel,                              \
 422         .n_voltages     = S2MPS14_BUCK_N_VOLTAGES,              \
 423         .ramp_delay     = S2MPS13_BUCK_RAMP_DELAY,              \
 424         .vsel_reg       = S2MPS13_REG_B1OUT + (num) * 2 - 1,    \
 425         .vsel_mask      = S2MPS14_BUCK_VSEL_MASK,               \
 426         .enable_reg     = S2MPS13_REG_B1CTRL + (num - 1) * 2,   \
 427         .enable_mask    = S2MPS14_ENABLE_MASK                   \
 428 }
 429
 430 #define regulator_desc_s2mps13_buck8_10(num, min, step, min_sel) {      \
 431         .name           = "BUCK"#num,                           \
 432         .id             = S2MPS13_BUCK##num,                    \
 433         .ops            = &s2mps14_reg_ops,                     \
 434         .type           = REGULATOR_VOLTAGE,                    \
 435         .owner          = THIS_MODULE,                          \
 436         .min_uV         = min,                                  \
 437         .uV_step        = step,                                 \
 438         .linear_min_sel = min_sel,                              \
 439         .n_voltages     = S2MPS14_BUCK_N_VOLTAGES,              \
 440         .ramp_delay     = S2MPS13_BUCK_RAMP_DELAY,              \
 441         .vsel_reg       = S2MPS13_REG_B1OUT + (num) * 2 - 1,    \
 442         .vsel_mask      = S2MPS14_BUCK_VSEL_MASK,               \
 443         .enable_reg     = S2MPS13_REG_B1CTRL + (num) * 2 - 1,   \
 444         .enable_mask    = S2MPS14_ENABLE_MASK                   \
 445 }
 446
 447 static const struct regulator_desc s2mps13_regulators[] = {
 448         regulator_desc_s2mps13_ldo(1,  MIN_800_MV,  STEP_12_5_MV, 0x00),
 449         regulator_desc_s2mps13_ldo(2,  MIN_1400_MV, STEP_50_MV,   0x0C),
 450         regulator_desc_s2mps13_ldo(3,  MIN_1000_MV, STEP_25_MV,   0x08),
 451         regulator_desc_s2mps13_ldo(4,  MIN_800_MV,  STEP_12_5_MV, 0x00),
 452         regulator_desc_s2mps13_ldo(5,  MIN_800_MV,  STEP_12_5_MV, 0x00),
 453         regulator_desc_s2mps13_ldo(6,  MIN_800_MV,  STEP_12_5_MV, 0x00),
 454         regulator_desc_s2mps13_ldo(7,  MIN_1000_MV, STEP_25_MV,   0x08),
 455         regulator_desc_s2mps13_ldo(8,  MIN_1000_MV, STEP_25_MV,   0x08),
 456         regulator_desc_s2mps13_ldo(9,  MIN_1000_MV, STEP_25_MV,   0x08),
 457         regulator_desc_s2mps13_ldo(10, MIN_1400_MV, STEP_50_MV,   0x0C),
 458         regulator_desc_s2mps13_ldo(11, MIN_800_MV,  STEP_25_MV,   0x10),
 459         regulator_desc_s2mps13_ldo(12, MIN_800_MV,  STEP_25_MV,   0x10),
 460         regulator_desc_s2mps13_ldo(13, MIN_800_MV,  STEP_25_MV,   0x10),
 461         regulator_desc_s2mps13_ldo(14, MIN_800_MV,  STEP_12_5_MV, 0x00),
 462         regulator_desc_s2mps13_ldo(15, MIN_800_MV,  STEP_12_5_MV, 0x00),
 463         regulator_desc_s2mps13_ldo(16, MIN_1400_MV, STEP_50_MV,   0x0C),
 464         regulator_desc_s2mps13_ldo(17, MIN_1400_MV, STEP_50_MV,   0x0C),
 465         regulator_desc_s2mps13_ldo(18, MIN_1000_MV, STEP_25_MV,   0x08),
 466         regulator_desc_s2mps13_ldo(19, MIN_1000_MV, STEP_25_MV,   0x08),
 467         regulator_desc_s2mps13_ldo(20, MIN_1400_MV, STEP_50_MV,   0x0C),
 468         regulator_desc_s2mps13_ldo(21, MIN_1000_MV, STEP_25_MV,   0x08),
 469         regulator_desc_s2mps13_ldo(22, MIN_1000_MV, STEP_25_MV,   0x08),
 470         regulator_desc_s2mps13_ldo(23, MIN_800_MV,  STEP_12_5_MV, 0x00),
 471         regulator_desc_s2mps13_ldo(24, MIN_800_MV,  STEP_12_5_MV, 0x00),
 472         regulator_desc_s2mps13_ldo(25, MIN_1400_MV, STEP_50_MV,   0x0C),
 473         regulator_desc_s2mps13_ldo(26, MIN_1400_MV, STEP_50_MV,   0x0C),
 474         regulator_desc_s2mps13_ldo(27, MIN_1400_MV, STEP_50_MV,   0x0C),
 475         regulator_desc_s2mps13_ldo(28, MIN_1000_MV, STEP_25_MV,   0x08),
 476         regulator_desc_s2mps13_ldo(29, MIN_1400_MV, STEP_50_MV,   0x0C),
 477         regulator_desc_s2mps13_ldo(30, MIN_1400_MV, STEP_50_MV,   0x0C),
 478         regulator_desc_s2mps13_ldo(31, MIN_1000_MV, STEP_25_MV,   0x08),
 479         regulator_desc_s2mps13_ldo(32, MIN_1000_MV, STEP_25_MV,   0x08),
 480         regulator_desc_s2mps13_ldo(33, MIN_1400_MV, STEP_50_MV,   0x0C),
 481         regulator_desc_s2mps13_ldo(34, MIN_1000_MV, STEP_25_MV,   0x08),
 482         regulator_desc_s2mps13_ldo(35, MIN_1400_MV, STEP_50_MV,   0x0C),
 483         regulator_desc_s2mps13_ldo(36, MIN_800_MV,  STEP_12_5_MV, 0x00),
 484         regulator_desc_s2mps13_ldo(37, MIN_1000_MV, STEP_25_MV,   0x08),
 485         regulator_desc_s2mps13_ldo(38, MIN_1400_MV, STEP_50_MV,   0x0C),
 486         regulator_desc_s2mps13_ldo(39, MIN_1000_MV, STEP_25_MV,   0x08),
 487         regulator_desc_s2mps13_ldo(40, MIN_1400_MV, STEP_50_MV,   0x0C),
 488         regulator_desc_s2mps13_buck(1,  MIN_500_MV,  STEP_6_25_MV, 0x10),
 489         regulator_desc_s2mps13_buck(2,  MIN_500_MV,  STEP_6_25_MV, 0x10),
 490         regulator_desc_s2mps13_buck(3,  MIN_500_MV,  STEP_6_25_MV, 0x10),
 491         regulator_desc_s2mps13_buck(4,  MIN_500_MV,  STEP_6_25_MV, 0x10),
 492         regulator_desc_s2mps13_buck(5,  MIN_500_MV,  STEP_6_25_MV, 0x10),
 493         regulator_desc_s2mps13_buck(6,  MIN_500_MV,  STEP_6_25_MV, 0x10),
 494         regulator_desc_s2mps13_buck7(7,  MIN_500_MV,  STEP_6_25_MV, 0x10),
 495         regulator_desc_s2mps13_buck8_10(8,  MIN_1000_MV, STEP_12_5_MV, 0x20),
 496         regulator_desc_s2mps13_buck8_10(9,  MIN_1000_MV, STEP_12_5_MV, 0x20),
 497         regulator_desc_s2mps13_buck8_10(10, MIN_500_MV,  STEP_6_25_MV, 0x10),
 498 };
 499
 500 static int s2mps14_regulator_enable(struct regulator_dev *rdev)
 501 {
 502         struct s2mps11_info *s2mps11 = rdev_get_drvdata(rdev);
 503         unsigned int val;
 504
 505         switch (s2mps11->dev_type) {
 506         case S2MPS13X:
 507         case S2MPS14X:
 508                 if (test_bit(rdev_get_id(rdev), s2mps11->suspend_state))
 509                         val = S2MPS14_ENABLE_SUSPEND;
 510                 else if (gpio_is_valid(s2mps11->ext_control_gpio[rdev_get_id(rdev)]))
 511                         val = S2MPS14_ENABLE_EXT_CONTROL;
 512                 else
 513                         val = rdev->desc->enable_mask;
 514                 break;
 515         case S2MPU02:
 516                 if (test_bit(rdev_get_id(rdev), s2mps11->suspend_state))
 517                         val = S2MPU02_ENABLE_SUSPEND;
 518                 else
 519                         val = rdev->desc->enable_mask;
 520                 break;
 521         default:
 522                 return -EINVAL;
 523         }
 524
 525         return regmap_update_bits(rdev->regmap, rdev->desc->enable_reg,
 526                         rdev->desc->enable_mask, val);
 527 }
 528
 529 static int s2mps14_regulator_set_suspend_disable(struct regulator_dev *rdev)
 530 {
 531         int ret;
 532         unsigned int val, state;
 533         struct s2mps11_info *s2mps11 = rdev_get_drvdata(rdev);
 534         int rdev_id = rdev_get_id(rdev);
 535
 536         /* Below LDO should be always on or does not support suspend mode. */
 537         switch (s2mps11->dev_type) {
 538         case S2MPS13X:
 539         case S2MPS14X:
 540                 switch (rdev_id) {
 541                 case S2MPS14_LDO3:
 542                         return 0;
 543                 default:
 544                         state = S2MPS14_ENABLE_SUSPEND;
 545                         break;
 546                 }
 547                 break;
 548         case S2MPU02:
 549                 switch (rdev_id) {
 550                 case S2MPU02_LDO13:
 551                 case S2MPU02_LDO14:
 552                 case S2MPU02_LDO15:
 553                 case S2MPU02_LDO17:
 554                 case S2MPU02_BUCK7:
 555                         state = S2MPU02_DISABLE_SUSPEND;
 556                         break;
 557                 default:
 558                         state = S2MPU02_ENABLE_SUSPEND;
 559                         break;
 560                 }
 561                 break;
 562         default:
 563                 return -EINVAL;
 564         }
 565
 566         ret = regmap_read(rdev->regmap, rdev->desc->enable_reg, &val);
 567         if (ret < 0)
 568                 return ret;
 569
 570         set_bit(rdev_get_id(rdev), s2mps11->suspend_state);
 571         /*
 572          * Don't enable suspend mode if regulator is already disabled because
 573          * this would effectively for a short time turn on the regulator after
 574          * resuming.
 575          * However we still want to toggle the suspend_state bit for regulator
 576          * in case if it got enabled before suspending the system.
 577          */
 578         if (!(val & rdev->desc->enable_mask))
 579                 return 0;
 580
 581         return regmap_update_bits(rdev->regmap, rdev->desc->enable_reg,
 582                         rdev->desc->enable_mask, state);
 583 }
 584
 585 static struct regulator_ops s2mps14_reg_ops = {
 586         .list_voltage           = regulator_list_voltage_linear,
 587         .map_voltage            = regulator_map_voltage_linear,
 588         .is_enabled             = regulator_is_enabled_regmap,
 589         .enable                 = s2mps14_regulator_enable,
 590         .disable                = regulator_disable_regmap,
 591         .get_voltage_sel        = regulator_get_voltage_sel_regmap,
 592         .set_voltage_sel        = regulator_set_voltage_sel_regmap,
 593         .set_voltage_time_sel   = regulator_set_voltage_time_sel,
 594         .set_suspend_disable    = s2mps14_regulator_set_suspend_disable,
 595 };
 596
 597 #define regulator_desc_s2mps14_ldo(num, min, step) {    \
 598         .name           = "LDO"#num,                    \
 599         .id             = S2MPS14_LDO##num,             \
 600         .ops            = &s2mps14_reg_ops,             \
 601         .type           = REGULATOR_VOLTAGE,            \
 602         .owner          = THIS_MODULE,                  \
 603         .min_uV         = min,                          \
 604         .uV_step        = step,                         \
 605         .n_voltages     = S2MPS14_LDO_N_VOLTAGES,       \
 606         .vsel_reg       = S2MPS14_REG_L1CTRL + num - 1, \
 607         .vsel_mask      = S2MPS14_LDO_VSEL_MASK,        \
 608         .enable_reg     = S2MPS14_REG_L1CTRL + num - 1, \
 609         .enable_mask    = S2MPS14_ENABLE_MASK           \
 610 }
 611
 612 #define regulator_desc_s2mps14_buck(num, min, step, min_sel) {  \
 613         .name           = "BUCK"#num,                           \
 614         .id             = S2MPS14_BUCK##num,                    \
 615         .ops            = &s2mps14_reg_ops,                     \
 616         .type           = REGULATOR_VOLTAGE,                    \
 617         .owner          = THIS_MODULE,                          \
 618         .min_uV         = min,                                  \
 619         .uV_step        = step,                                 \
 620         .n_voltages     = S2MPS14_BUCK_N_VOLTAGES,              \
 621         .linear_min_sel = min_sel,                              \
 622         .ramp_delay     = S2MPS14_BUCK_RAMP_DELAY,              \
 623         .vsel_reg       = S2MPS14_REG_B1CTRL2 + (num - 1) * 2,  \
 624         .vsel_mask      = S2MPS14_BUCK_VSEL_MASK,               \
 625         .enable_reg     = S2MPS14_REG_B1CTRL1 + (num - 1) * 2,  \
 626         .enable_mask    = S2MPS14_ENABLE_MASK                   \
 627 }
 628
 629 static const struct regulator_desc s2mps14_regulators[] = {
 630         regulator_desc_s2mps14_ldo(1, MIN_800_MV, STEP_12_5_MV),
 631         regulator_desc_s2mps14_ldo(2, MIN_800_MV, STEP_12_5_MV),
 632         regulator_desc_s2mps14_ldo(3, MIN_800_MV, STEP_25_MV),
 633         regulator_desc_s2mps14_ldo(4, MIN_800_MV, STEP_25_MV),
 634         regulator_desc_s2mps14_ldo(5, MIN_800_MV, STEP_12_5_MV),
 635         regulator_desc_s2mps14_ldo(6, MIN_800_MV, STEP_12_5_MV),
 636         regulator_desc_s2mps14_ldo(7, MIN_800_MV, STEP_25_MV),
 637         regulator_desc_s2mps14_ldo(8, MIN_1800_MV, STEP_25_MV),
 638         regulator_desc_s2mps14_ldo(9, MIN_800_MV, STEP_12_5_MV),
 639         regulator_desc_s2mps14_ldo(10, MIN_800_MV, STEP_12_5_MV),
 640         regulator_desc_s2mps14_ldo(11, MIN_800_MV, STEP_25_MV),
 641         regulator_desc_s2mps14_ldo(12, MIN_1800_MV, STEP_25_MV),
 642         regulator_desc_s2mps14_ldo(13, MIN_1800_MV, STEP_25_MV),
 643         regulator_desc_s2mps14_ldo(14, MIN_1800_MV, STEP_25_MV),
 644         regulator_desc_s2mps14_ldo(15, MIN_1800_MV, STEP_25_MV),
 645         regulator_desc_s2mps14_ldo(16, MIN_1800_MV, STEP_25_MV),
 646         regulator_desc_s2mps14_ldo(17, MIN_1800_MV, STEP_25_MV),
 647         regulator_desc_s2mps14_ldo(18, MIN_1800_MV, STEP_25_MV),
 648         regulator_desc_s2mps14_ldo(19, MIN_800_MV, STEP_25_MV),
 649         regulator_desc_s2mps14_ldo(20, MIN_800_MV, STEP_25_MV),
 650         regulator_desc_s2mps14_ldo(21, MIN_800_MV, STEP_25_MV),
 651         regulator_desc_s2mps14_ldo(22, MIN_800_MV, STEP_12_5_MV),
 652         regulator_desc_s2mps14_ldo(23, MIN_800_MV, STEP_25_MV),
 653         regulator_desc_s2mps14_ldo(24, MIN_1800_MV, STEP_25_MV),
 654         regulator_desc_s2mps14_ldo(25, MIN_1800_MV, STEP_25_MV),
 655         regulator_desc_s2mps14_buck(1, MIN_600_MV, STEP_6_25_MV,
 656                                     S2MPS14_BUCK1235_START_SEL),
 657         regulator_desc_s2mps14_buck(2, MIN_600_MV, STEP_6_25_MV,
 658                                     S2MPS14_BUCK1235_START_SEL),
 659         regulator_desc_s2mps14_buck(3, MIN_600_MV, STEP_6_25_MV,
 660                                     S2MPS14_BUCK1235_START_SEL),
 661         regulator_desc_s2mps14_buck(4, MIN_1400_MV, STEP_12_5_MV,
 662                                     S2MPS14_BUCK4_START_SEL),
 663         regulator_desc_s2mps14_buck(5, MIN_600_MV, STEP_6_25_MV,
 664                                     S2MPS14_BUCK1235_START_SEL),
 665 };
 666
 667 static struct regulator_ops s2mps15_reg_ldo_ops = {
 668         .list_voltage           = regulator_list_voltage_linear_range,
 669         .map_voltage            = regulator_map_voltage_linear_range,
 670         .is_enabled             = regulator_is_enabled_regmap,
 671         .enable                 = regulator_enable_regmap,
 672         .disable                = regulator_disable_regmap,
 673         .get_voltage_sel        = regulator_get_voltage_sel_regmap,
 674         .set_voltage_sel        = regulator_set_voltage_sel_regmap,
 675 };
 676
 677 static struct regulator_ops s2mps15_reg_buck_ops = {
 678         .list_voltage           = regulator_list_voltage_linear_range,
 679         .map_voltage            = regulator_map_voltage_linear_range,
 680         .is_enabled             = regulator_is_enabled_regmap,
 681         .enable                 = regulator_enable_regmap,
 682         .disable                = regulator_disable_regmap,
 683         .get_voltage_sel        = regulator_get_voltage_sel_regmap,
 684         .set_voltage_sel        = regulator_set_voltage_sel_regmap,
 685         .set_voltage_time_sel   = regulator_set_voltage_time_sel,
 686 };
 687
 688 #define regulator_desc_s2mps15_ldo(num, range) {        \
 689         .name           = "LDO"#num,                    \
 690         .id             = S2MPS15_LDO##num,             \
 691         .ops            = &s2mps15_reg_ldo_ops,         \
 692         .type           = REGULATOR_VOLTAGE,            \
 693         .owner          = THIS_MODULE,                  \
 694         .linear_ranges  = range,                        \
 695         .n_linear_ranges = ARRAY_SIZE(range),           \
 696         .n_voltages     = S2MPS15_LDO_N_VOLTAGES,       \
 697         .vsel_reg       = S2MPS15_REG_L1CTRL + num - 1, \
 698         .vsel_mask      = S2MPS15_LDO_VSEL_MASK,        \
 699         .enable_reg     = S2MPS15_REG_L1CTRL + num - 1, \
 700         .enable_mask    = S2MPS15_ENABLE_MASK           \
 701 }
 702
 703 #define regulator_desc_s2mps15_buck(num, range) {                       \
 704         .name           = "BUCK"#num,                                   \
 705         .id             = S2MPS15_BUCK##num,                            \
 706         .ops            = &s2mps15_reg_buck_ops,                        \
 707         .type           = REGULATOR_VOLTAGE,                            \
 708         .owner          = THIS_MODULE,                                  \
 709         .linear_ranges  = range,                                        \
 710         .n_linear_ranges = ARRAY_SIZE(range),                           \
 711         .ramp_delay     = 12500,                                        \
 712         .n_voltages     = S2MPS15_BUCK_N_VOLTAGES,                      \
 713         .vsel_reg       = S2MPS15_REG_B1CTRL2 + ((num - 1) * 2),        \
 714         .vsel_mask      = S2MPS15_BUCK_VSEL_MASK,                       \
 715         .enable_reg     = S2MPS15_REG_B1CTRL1 + ((num - 1) * 2),        \
 716         .enable_mask    = S2MPS15_ENABLE_MASK                           \
 717 }
 718
 719 /* voltage range for s2mps15 LDO 3, 5, 15, 16, 18, 20, 23 and 27 */
 720 static const struct regulator_linear_range s2mps15_ldo_voltage_ranges1[] = {
 721         REGULATOR_LINEAR_RANGE(1000000, 0xc, 0x38, 25000),
 722 };
 723
 724 /* voltage range for s2mps15 LDO 2, 6, 14, 17, 19, 21, 24 and 25 */
 725 static const struct regulator_linear_range s2mps15_ldo_voltage_ranges2[] = {
 726         REGULATOR_LINEAR_RANGE(1800000, 0x0, 0x3f, 25000),
 727 };
 728
 729 /* voltage range for s2mps15 LDO 4, 11, 12, 13, 22 and 26 */
 730 static const struct regulator_linear_range s2mps15_ldo_voltage_ranges3[] = {
 731         REGULATOR_LINEAR_RANGE(700000, 0x0, 0x34, 12500),
 732 };
 733
 734 /* voltage range for s2mps15 LDO 7, 8, 9 and 10 */
 735 static const struct regulator_linear_range s2mps15_ldo_voltage_ranges4[] = {
 736         REGULATOR_LINEAR_RANGE(700000, 0xc, 0x18, 25000),
 737 };
 738
 739 /* voltage range for s2mps15 LDO 1 */
 740 static const struct regulator_linear_range s2mps15_ldo_voltage_ranges5[] = {
 741         REGULATOR_LINEAR_RANGE(500000, 0x0, 0x20, 12500),
 742 };
 743
 744 /* voltage range for s2mps15 BUCK 1, 2, 3, 4, 5, 6 and 7 */
 745 static const struct regulator_linear_range s2mps15_buck_voltage_ranges1[] = {
 746         REGULATOR_LINEAR_RANGE(500000, 0x20, 0xb0, 6250),
 747 };
 748
 749 /* voltage range for s2mps15 BUCK 8, 9 and 10 */
 750 static const struct regulator_linear_range s2mps15_buck_voltage_ranges2[] = {
 751         REGULATOR_LINEAR_RANGE(1000000, 0x20, 0xc0, 12500),
 752 };
 753
 754 static const struct regulator_desc s2mps15_regulators[] = {
 755         regulator_desc_s2mps15_ldo(1, s2mps15_ldo_voltage_ranges5),
 756         regulator_desc_s2mps15_ldo(2, s2mps15_ldo_voltage_ranges2),
 757         regulator_desc_s2mps15_ldo(3, s2mps15_ldo_voltage_ranges1),
 758         regulator_desc_s2mps15_ldo(4, s2mps15_ldo_voltage_ranges3),
 759         regulator_desc_s2mps15_ldo(5, s2mps15_ldo_voltage_ranges1),
 760         regulator_desc_s2mps15_ldo(6, s2mps15_ldo_voltage_ranges2),
 761         regulator_desc_s2mps15_ldo(7, s2mps15_ldo_voltage_ranges4),
 762         regulator_desc_s2mps15_ldo(8, s2mps15_ldo_voltage_ranges4),
 763         regulator_desc_s2mps15_ldo(9, s2mps15_ldo_voltage_ranges4),
 764         regulator_desc_s2mps15_ldo(10, s2mps15_ldo_voltage_ranges4),
 765         regulator_desc_s2mps15_ldo(11, s2mps15_ldo_voltage_ranges3),
 766         regulator_desc_s2mps15_ldo(12, s2mps15_ldo_voltage_ranges3),
 767         regulator_desc_s2mps15_ldo(13, s2mps15_ldo_voltage_ranges3),
 768         regulator_desc_s2mps15_ldo(14, s2mps15_ldo_voltage_ranges2),
 769         regulator_desc_s2mps15_ldo(15, s2mps15_ldo_voltage_ranges1),
 770         regulator_desc_s2mps15_ldo(16, s2mps15_ldo_voltage_ranges1),
 771         regulator_desc_s2mps15_ldo(17, s2mps15_ldo_voltage_ranges2),
 772         regulator_desc_s2mps15_ldo(18, s2mps15_ldo_voltage_ranges1),
 773         regulator_desc_s2mps15_ldo(19, s2mps15_ldo_voltage_ranges2),
 774         regulator_desc_s2mps15_ldo(20, s2mps15_ldo_voltage_ranges1),
 775         regulator_desc_s2mps15_ldo(21, s2mps15_ldo_voltage_ranges2),
 776         regulator_desc_s2mps15_ldo(22, s2mps15_ldo_voltage_ranges3),
 777         regulator_desc_s2mps15_ldo(23, s2mps15_ldo_voltage_ranges1),
 778         regulator_desc_s2mps15_ldo(24, s2mps15_ldo_voltage_ranges2),
 779         regulator_desc_s2mps15_ldo(25, s2mps15_ldo_voltage_ranges2),
 780         regulator_desc_s2mps15_ldo(26, s2mps15_ldo_voltage_ranges3),
 781         regulator_desc_s2mps15_ldo(27, s2mps15_ldo_voltage_ranges1),
 782         regulator_desc_s2mps15_buck(1, s2mps15_buck_voltage_ranges1),
 783         regulator_desc_s2mps15_buck(2, s2mps15_buck_voltage_ranges1),
 784         regulator_desc_s2mps15_buck(3, s2mps15_buck_voltage_ranges1),
 785         regulator_desc_s2mps15_buck(4, s2mps15_buck_voltage_ranges1),
 786         regulator_desc_s2mps15_buck(5, s2mps15_buck_voltage_ranges1),
 787         regulator_desc_s2mps15_buck(6, s2mps15_buck_voltage_ranges1),
 788         regulator_desc_s2mps15_buck(7, s2mps15_buck_voltage_ranges1),
 789         regulator_desc_s2mps15_buck(8, s2mps15_buck_voltage_ranges2),
 790         regulator_desc_s2mps15_buck(9, s2mps15_buck_voltage_ranges2),
 791         regulator_desc_s2mps15_buck(10, s2mps15_buck_voltage_ranges2),
 792 };
 793
 794 static int s2mps14_pmic_enable_ext_control(struct s2mps11_info *s2mps11,
 795                 struct regulator_dev *rdev)
 796 {
 797         return regmap_update_bits(rdev->regmap, rdev->desc->enable_reg,
 798                         rdev->desc->enable_mask, S2MPS14_ENABLE_EXT_CONTROL);
 799 }
 800
 801 static void s2mps14_pmic_dt_parse_ext_control_gpio(struct platform_device *pdev,
 802                 struct of_regulator_match *rdata, struct s2mps11_info *s2mps11)
 803 {
 804         int *gpio = s2mps11->ext_control_gpio;
 805         unsigned int i;
 806         unsigned int valid_regulators[3] = { S2MPS14_LDO10, S2MPS14_LDO11,
 807                 S2MPS14_LDO12 };
 808
 809         for (i = 0; i < ARRAY_SIZE(valid_regulators); i++) {
 810                 unsigned int reg = valid_regulators[i];
 811
 812                 if (!rdata[reg].init_data || !rdata[reg].of_node)
 813                         continue;
 814
 815                 gpio[reg] = of_get_named_gpio(rdata[reg].of_node,
 816                                 "samsung,ext-control-gpios", 0);
 817                 if (gpio_is_valid(gpio[reg]))
 818                         dev_dbg(&pdev->dev, "Using GPIO %d for ext-control over %d/%s\n",
 819                                         gpio[reg], reg, rdata[reg].name);
 820         }
 821 }
 822
 823 static int s2mps11_pmic_dt_parse(struct platform_device *pdev,
 824                 struct of_regulator_match *rdata, struct s2mps11_info *s2mps11,
 825                 unsigned int rdev_num)
 826 {
 827         struct device_node *reg_np;
 828
 829         reg_np = of_get_child_by_name(pdev->dev.parent->of_node, "regulators");
 830         if (!reg_np) {
 831                 dev_err(&pdev->dev, "could not find regulators sub-node\n");
 832                 return -EINVAL;
 833         }
 834
 835         of_regulator_match(&pdev->dev, reg_np, rdata, rdev_num);
 836         if (s2mps11->dev_type == S2MPS14X)
 837                 s2mps14_pmic_dt_parse_ext_control_gpio(pdev, rdata, s2mps11);
 838
 839         of_node_put(reg_np);
 840
 841         return 0;
 842 }
 843
 844 static int s2mpu02_set_ramp_delay(struct regulator_dev *rdev, int ramp_delay)
 845 {
 846         unsigned int ramp_val, ramp_shift, ramp_reg;
 847
 848         switch (rdev_get_id(rdev)) {
 849         case S2MPU02_BUCK1:
 850                 ramp_shift = S2MPU02_BUCK1_RAMP_SHIFT;
 851                 break;
 852         case S2MPU02_BUCK2:
 853                 ramp_shift = S2MPU02_BUCK2_RAMP_SHIFT;
 854                 break;
 855         case S2MPU02_BUCK3:
 856                 ramp_shift = S2MPU02_BUCK3_RAMP_SHIFT;
 857                 break;
 858         case S2MPU02_BUCK4:
 859                 ramp_shift = S2MPU02_BUCK4_RAMP_SHIFT;
 860                 break;
 861         default:
 862                 return 0;
 863         }
 864         ramp_reg = S2MPU02_REG_RAMP1;
 865         ramp_val = get_ramp_delay(ramp_delay);
 866
 867         return regmap_update_bits(rdev->regmap, ramp_reg,
 868                                   S2MPU02_BUCK1234_RAMP_MASK << ramp_shift,
 869                                   ramp_val << ramp_shift);
 870 }
 871
 872 static struct regulator_ops s2mpu02_ldo_ops = {
 873         .list_voltage           = regulator_list_voltage_linear,
 874         .map_voltage            = regulator_map_voltage_linear,
 875         .is_enabled             = regulator_is_enabled_regmap,
 876         .enable                 = s2mps14_regulator_enable,
 877         .disable                = regulator_disable_regmap,
 878         .get_voltage_sel        = regulator_get_voltage_sel_regmap,
 879         .set_voltage_sel        = regulator_set_voltage_sel_regmap,
 880         .set_voltage_time_sel   = regulator_set_voltage_time_sel,
 881         .set_suspend_disable    = s2mps14_regulator_set_suspend_disable,
 882 };
 883
 884 static struct regulator_ops s2mpu02_buck_ops = {
 885         .list_voltage           = regulator_list_voltage_linear,
 886         .map_voltage            = regulator_map_voltage_linear,
 887         .is_enabled             = regulator_is_enabled_regmap,
 888         .enable                 = s2mps14_regulator_enable,
 889         .disable                = regulator_disable_regmap,
 890         .get_voltage_sel        = regulator_get_voltage_sel_regmap,
 891         .set_voltage_sel        = regulator_set_voltage_sel_regmap,
 892         .set_voltage_time_sel   = regulator_set_voltage_time_sel,
 893         .set_suspend_disable    = s2mps14_regulator_set_suspend_disable,
 894         .set_ramp_delay         = s2mpu02_set_ramp_delay,
 895 };
 896
 897 #define regulator_desc_s2mpu02_ldo1(num) {              \
 898         .name           = "LDO"#num,                    \
 899         .id             = S2MPU02_LDO##num,             \
 900         .ops            = &s2mpu02_ldo_ops,             \
 901         .type           = REGULATOR_VOLTAGE,            \
 902         .owner          = THIS_MODULE,                  \
 903         .min_uV         = S2MPU02_LDO_MIN_900MV,        \
 904         .uV_step        = S2MPU02_LDO_STEP_12_5MV,      \
 905         .linear_min_sel = S2MPU02_LDO_GROUP1_START_SEL, \
 906         .n_voltages     = S2MPU02_LDO_N_VOLTAGES,       \
 907         .vsel_reg       = S2MPU02_REG_L1CTRL,           \
 908         .vsel_mask      = S2MPU02_LDO_VSEL_MASK,        \
 909         .enable_reg     = S2MPU02_REG_L1CTRL,           \
 910         .enable_mask    = S2MPU02_ENABLE_MASK           \
 911 }
 912 #define regulator_desc_s2mpu02_ldo2(num) {              \
 913         .name           = "LDO"#num,                    \
 914         .id             = S2MPU02_LDO##num,             \
 915         .ops            = &s2mpu02_ldo_ops,             \
 916         .type           = REGULATOR_VOLTAGE,            \
 917         .owner          = THIS_MODULE,                  \
 918         .min_uV         = S2MPU02_LDO_MIN_1050MV,       \
 919         .uV_step        = S2MPU02_LDO_STEP_25MV,        \
 920         .linear_min_sel = S2MPU02_LDO_GROUP2_START_SEL, \
 921         .n_voltages     = S2MPU02_LDO_N_VOLTAGES,       \
 922         .vsel_reg       = S2MPU02_REG_L2CTRL1,          \
 923         .vsel_mask      = S2MPU02_LDO_VSEL_MASK,        \
 924         .enable_reg     = S2MPU02_REG_L2CTRL1,          \
 925         .enable_mask    = S2MPU02_ENABLE_MASK           \
 926 }
 927 #define regulator_desc_s2mpu02_ldo3(num) {              \
 928         .name           = "LDO"#num,                    \
 929         .id             = S2MPU02_LDO##num,             \
 930         .ops            = &s2mpu02_ldo_ops,             \
 931         .type           = REGULATOR_VOLTAGE,            \
 932         .owner          = THIS_MODULE,                  \
 933         .min_uV         = S2MPU02_LDO_MIN_900MV,        \
 934         .uV_step        = S2MPU02_LDO_STEP_12_5MV,      \
 935         .linear_min_sel = S2MPU02_LDO_GROUP1_START_SEL, \
 936         .n_voltages     = S2MPU02_LDO_N_VOLTAGES,       \
 937         .vsel_reg       = S2MPU02_REG_L3CTRL + num - 3, \
 938         .vsel_mask      = S2MPU02_LDO_VSEL_MASK,        \
 939         .enable_reg     = S2MPU02_REG_L3CTRL + num - 3, \
 940         .enable_mask    = S2MPU02_ENABLE_MASK           \
 941 }
 942 #define regulator_desc_s2mpu02_ldo4(num) {              \
 943         .name           = "LDO"#num,                    \
 944         .id             = S2MPU02_LDO##num,             \
 945         .ops            = &s2mpu02_ldo_ops,             \
 946         .type           = REGULATOR_VOLTAGE,            \
 947         .owner          = THIS_MODULE,                  \
 948         .min_uV         = S2MPU02_LDO_MIN_1050MV,       \
 949         .uV_step        = S2MPU02_LDO_STEP_25MV,        \
 950         .linear_min_sel = S2MPU02_LDO_GROUP2_START_SEL, \
 951         .n_voltages     = S2MPU02_LDO_N_VOLTAGES,       \
 952         .vsel_reg       = S2MPU02_REG_L3CTRL + num - 3, \
 953         .vsel_mask      = S2MPU02_LDO_VSEL_MASK,        \
 954         .enable_reg     = S2MPU02_REG_L3CTRL + num - 3, \
 955         .enable_mask    = S2MPU02_ENABLE_MASK           \
 956 }
 957 #define regulator_desc_s2mpu02_ldo5(num) {              \
 958         .name           = "LDO"#num,                    \
 959         .id             = S2MPU02_LDO##num,             \
 960         .ops            = &s2mpu02_ldo_ops,             \
 961         .type           = REGULATOR_VOLTAGE,            \
 962         .owner          = THIS_MODULE,                  \
 963         .min_uV         = S2MPU02_LDO_MIN_1600MV,       \
 964         .uV_step        = S2MPU02_LDO_STEP_50MV,        \
 965         .linear_min_sel = S2MPU02_LDO_GROUP3_START_SEL, \
 966         .n_voltages     = S2MPU02_LDO_N_VOLTAGES,       \
 967         .vsel_reg       = S2MPU02_REG_L3CTRL + num - 3, \
 968         .vsel_mask      = S2MPU02_LDO_VSEL_MASK,        \
 969         .enable_reg     = S2MPU02_REG_L3CTRL + num - 3, \
 970         .enable_mask    = S2MPU02_ENABLE_MASK           \
 971 }
 972
 973 #define regulator_desc_s2mpu02_buck1234(num) {                  \
 974         .name           = "BUCK"#num,                           \
 975         .id             = S2MPU02_BUCK##num,                    \
 976         .ops            = &s2mpu02_buck_ops,                    \
 977         .type           = REGULATOR_VOLTAGE,                    \
 978         .owner          = THIS_MODULE,                          \
 979         .min_uV         = S2MPU02_BUCK1234_MIN_600MV,           \
 980         .uV_step        = S2MPU02_BUCK1234_STEP_6_25MV,         \
 981         .n_voltages     = S2MPU02_BUCK_N_VOLTAGES,              \
 982         .linear_min_sel = S2MPU02_BUCK1234_START_SEL,           \
 983         .ramp_delay     = S2MPU02_BUCK_RAMP_DELAY,              \
 984         .vsel_reg       = S2MPU02_REG_B1CTRL2 + (num - 1) * 2,  \
 985         .vsel_mask      = S2MPU02_BUCK_VSEL_MASK,               \
 986         .enable_reg     = S2MPU02_REG_B1CTRL1 + (num - 1) * 2,  \
 987         .enable_mask    = S2MPU02_ENABLE_MASK                   \
 988 }
 989 #define regulator_desc_s2mpu02_buck5(num) {                     \
 990         .name           = "BUCK"#num,                           \
 991         .id             = S2MPU02_BUCK##num,                    \
 992         .ops            = &s2mpu02_ldo_ops,                     \
 993         .type           = REGULATOR_VOLTAGE,                    \
 994         .owner          = THIS_MODULE,                          \
 995         .min_uV         = S2MPU02_BUCK5_MIN_1081_25MV,          \
 996         .uV_step        = S2MPU02_BUCK5_STEP_6_25MV,            \
 997         .n_voltages     = S2MPU02_BUCK_N_VOLTAGES,              \
 998         .linear_min_sel = S2MPU02_BUCK5_START_SEL,              \
 999         .ramp_delay     = S2MPU02_BUCK_RAMP_DELAY,              \
1000         .vsel_reg       = S2MPU02_REG_B5CTRL2,                  \
1001         .vsel_mask      = S2MPU02_BUCK_VSEL_MASK,               \
1002         .enable_reg     = S2MPU02_REG_B5CTRL1,                  \
1003         .enable_mask    = S2MPU02_ENABLE_MASK                   \
1004 }
1005 #define regulator_desc_s2mpu02_buck6(num) {                     \
1006         .name           = "BUCK"#num,                           \
1007         .id             = S2MPU02_BUCK##num,                    \
1008         .ops            = &s2mpu02_ldo_ops,                     \
1009         .type           = REGULATOR_VOLTAGE,                    \
1010         .owner          = THIS_MODULE,                          \
1011         .min_uV         = S2MPU02_BUCK6_MIN_1700MV,             \
1012         .uV_step        = S2MPU02_BUCK6_STEP_2_50MV,            \
1013         .n_voltages     = S2MPU02_BUCK_N_VOLTAGES,              \
1014         .linear_min_sel = S2MPU02_BUCK6_START_SEL,              \
1015         .ramp_delay     = S2MPU02_BUCK_RAMP_DELAY,              \
1016         .vsel_reg       = S2MPU02_REG_B6CTRL2,                  \
1017         .vsel_mask      = S2MPU02_BUCK_VSEL_MASK,               \
1018         .enable_reg     = S2MPU02_REG_B6CTRL1,                  \
1019         .enable_mask    = S2MPU02_ENABLE_MASK                   \
1020 }
1021 #define regulator_desc_s2mpu02_buck7(num) {                     \
1022         .name           = "BUCK"#num,                           \
1023         .id             = S2MPU02_BUCK##num,                    \
1024         .ops            = &s2mpu02_ldo_ops,                     \
1025         .type           = REGULATOR_VOLTAGE,                    \
1026         .owner          = THIS_MODULE,                          \
1027         .min_uV         = S2MPU02_BUCK7_MIN_900MV,              \
1028         .uV_step        = S2MPU02_BUCK7_STEP_6_25MV,            \
1029         .n_voltages     = S2MPU02_BUCK_N_VOLTAGES,              \
1030         .linear_min_sel = S2MPU02_BUCK7_START_SEL,              \
1031         .ramp_delay     = S2MPU02_BUCK_RAMP_DELAY,              \
1032         .vsel_reg       = S2MPU02_REG_B7CTRL2,                  \
1033         .vsel_mask      = S2MPU02_BUCK_VSEL_MASK,               \
1034         .enable_reg     = S2MPU02_REG_B7CTRL1,                  \
1035         .enable_mask    = S2MPU02_ENABLE_MASK                   \
1036 }
1037
1038 static const struct regulator_desc s2mpu02_regulators[] = {
1039         regulator_desc_s2mpu02_ldo1(1),
1040         regulator_desc_s2mpu02_ldo2(2),
1041         regulator_desc_s2mpu02_ldo4(3),
1042         regulator_desc_s2mpu02_ldo5(4),
1043         regulator_desc_s2mpu02_ldo4(5),
1044         regulator_desc_s2mpu02_ldo3(6),
1045         regulator_desc_s2mpu02_ldo3(7),
1046         regulator_desc_s2mpu02_ldo4(8),
1047         regulator_desc_s2mpu02_ldo5(9),
1048         regulator_desc_s2mpu02_ldo3(10),
1049         regulator_desc_s2mpu02_ldo4(11),
1050         regulator_desc_s2mpu02_ldo5(12),
1051         regulator_desc_s2mpu02_ldo5(13),
1052         regulator_desc_s2mpu02_ldo5(14),
1053         regulator_desc_s2mpu02_ldo5(15),
1054         regulator_desc_s2mpu02_ldo5(16),
1055         regulator_desc_s2mpu02_ldo4(17),
1056         regulator_desc_s2mpu02_ldo5(18),
1057         regulator_desc_s2mpu02_ldo3(19),
1058         regulator_desc_s2mpu02_ldo4(20),
1059         regulator_desc_s2mpu02_ldo5(21),
1060         regulator_desc_s2mpu02_ldo5(22),
1061         regulator_desc_s2mpu02_ldo5(23),
1062         regulator_desc_s2mpu02_ldo4(24),
1063         regulator_desc_s2mpu02_ldo5(25),
1064         regulator_desc_s2mpu02_ldo4(26),
1065         regulator_desc_s2mpu02_ldo5(27),
1066         regulator_desc_s2mpu02_ldo5(28),
1067         regulator_desc_s2mpu02_buck1234(1),
1068         regulator_desc_s2mpu02_buck1234(2),
1069         regulator_desc_s2mpu02_buck1234(3),
1070         regulator_desc_s2mpu02_buck1234(4),
1071         regulator_desc_s2mpu02_buck5(5),
1072         regulator_desc_s2mpu02_buck6(6),
1073         regulator_desc_s2mpu02_buck7(7),
1074 };
1075
1076 static int s2mps11_pmic_probe(struct platform_device *pdev)
1077 {
1078         struct sec_pmic_dev *iodev = dev_get_drvdata(pdev->dev.parent);
1079         struct sec_platform_data *pdata = NULL;
1080         struct of_regulator_match *rdata = NULL;
1081         struct regulator_config config = { };
1082         struct s2mps11_info *s2mps11;
1083         unsigned int rdev_num = 0;
1084         int i, ret = 0;
1085         const struct regulator_desc *regulators;
1086
1087         s2mps11 = devm_kzalloc(&pdev->dev, sizeof(struct s2mps11_info),
1088                                 GFP_KERNEL);
1089         if (!s2mps11)
1090                 return -ENOMEM;
1091
1092         s2mps11->dev_type = platform_get_device_id(pdev)->driver_data;
1093         switch (s2mps11->dev_type) {
1094         case S2MPS11X:
1095                 rdev_num = ARRAY_SIZE(s2mps11_regulators);
1096                 regulators = s2mps11_regulators;
1097                 BUILD_BUG_ON(S2MPS_REGULATOR_MAX < ARRAY_SIZE(s2mps11_regulators));
1098                 break;
1099         case S2MPS13X:
1100                 rdev_num = ARRAY_SIZE(s2mps13_regulators);
1101                 regulators = s2mps13_regulators;
1102                 BUILD_BUG_ON(S2MPS_REGULATOR_MAX < ARRAY_SIZE(s2mps13_regulators));
1103                 break;
1104         case S2MPS14X:
1105                 rdev_num = ARRAY_SIZE(s2mps14_regulators);
1106                 regulators = s2mps14_regulators;
1107                 BUILD_BUG_ON(S2MPS_REGULATOR_MAX < ARRAY_SIZE(s2mps14_regulators));
1108                 break;
1109         case S2MPS15X:
1110                 rdev_num = ARRAY_SIZE(s2mps15_regulators);
1111                 regulators = s2mps15_regulators;
1112                 BUILD_BUG_ON(S2MPS_REGULATOR_MAX < ARRAY_SIZE(s2mps15_regulators));
1113                 break;
1114         case S2MPU02:
1115                 rdev_num = ARRAY_SIZE(s2mpu02_regulators);
1116                 regulators = s2mpu02_regulators;
1117                 BUILD_BUG_ON(S2MPS_REGULATOR_MAX < ARRAY_SIZE(s2mpu02_regulators));
1118                 break;
1119         default:
1120                 dev_err(&pdev->dev, "Invalid device type: %u\n",
1121                                     s2mps11->dev_type);
1122                 return -EINVAL;
1123         }
1124
1125         s2mps11->ext_control_gpio = devm_kmalloc(&pdev->dev,
1126                         sizeof(*s2mps11->ext_control_gpio) * rdev_num,
1127                         GFP_KERNEL);
1128         if (!s2mps11->ext_control_gpio)
1129                 return -ENOMEM;
1130         /*
1131          * 0 is a valid GPIO so initialize all GPIO-s to negative value
1132          * to indicate that external control won't be used for this regulator.
1133          */
1134         for (i = 0; i < rdev_num; i++)
1135                 s2mps11->ext_control_gpio[i] = -EINVAL;
1136
1137         if (!iodev->dev->of_node) {
1138                 if (iodev->pdata) {
1139                         pdata = iodev->pdata;
1140                         goto common_reg;
1141                 } else {
1142                         dev_err(pdev->dev.parent,
1143                                 "Platform data or DT node not supplied\n");
1144                         return -ENODEV;
1145                 }
1146         }
1147
1148         rdata = kzalloc(sizeof(*rdata) * rdev_num, GFP_KERNEL);
1149         if (!rdata)
1150                 return -ENOMEM;
1151
1152         for (i = 0; i < rdev_num; i++)
1153                 rdata[i].name = regulators[i].name;
1154
1155         ret = s2mps11_pmic_dt_parse(pdev, rdata, s2mps11, rdev_num);
1156         if (ret)
1157                 goto out;
1158
1159 common_reg:
1160         platform_set_drvdata(pdev, s2mps11);
1161
1162         config.dev = &pdev->dev;
1163         config.regmap = iodev->regmap_pmic;
1164         config.driver_data = s2mps11;
1165         config.ena_gpio_flags = GPIOF_OUT_INIT_HIGH;
1166         config.ena_gpio_initialized = true;
1167         for (i = 0; i < rdev_num; i++) {
1168                 struct regulator_dev *regulator;
1169
1170                 if (pdata) {
1171                         config.init_data = pdata->regulators[i].initdata;
1172                         config.of_node = pdata->regulators[i].reg_node;
1173                 } else {
1174                         config.init_data = rdata[i].init_data;
1175                         config.of_node = rdata[i].of_node;
1176                 }
1177                 config.ena_gpio = s2mps11->ext_control_gpio[i];
1178
1179                 regulator = devm_regulator_register(&pdev->dev,
1180                                                 &regulators[i], &config);
1181                 if (IS_ERR(regulator)) {
1182                         ret = PTR_ERR(regulator);
1183                         dev_err(&pdev->dev, "regulator init failed for %d\n",
1184                                 i);
1185                         goto out;
1186                 }
1187
1188                 if (gpio_is_valid(s2mps11->ext_control_gpio[i])) {
1189                         ret = s2mps14_pmic_enable_ext_control(s2mps11,
1190                                         regulator);
1191                         if (ret < 0) {
1192                                 dev_err(&pdev->dev,
1193                                                 "failed to enable GPIO control over %s: %d\n",
1194                                                 regulator->desc->name, ret);
1195                                 goto out;
1196                         }
1197                 }
1198         }
1199
1200 out:
1201         kfree(rdata);
1202
1203         return ret;
1204 }
1205
1206 static const struct platform_device_id s2mps11_pmic_id[] = {
1207         { "s2mps11-regulator", S2MPS11X},
1208         { "s2mps13-regulator", S2MPS13X},
1209         { "s2mps14-regulator", S2MPS14X},
1210         { "s2mps15-regulator", S2MPS15X},
1211         { "s2mpu02-regulator", S2MPU02},
1212         { },
1213 };
1214 MODULE_DEVICE_TABLE(platform, s2mps11_pmic_id);
1215
1216 static struct platform_driver s2mps11_pmic_driver = {
1217         .driver = {
1218                 .name = "s2mps11-pmic",
1219         },
1220         .probe = s2mps11_pmic_probe,
1221         .id_table = s2mps11_pmic_id,
1222 };
1223
1224 static int __init s2mps11_pmic_init(void)
1225 {
1226         return platform_driver_register(&s2mps11_pmic_driver);
1227 }
1228 subsys_initcall(s2mps11_pmic_init);
1229
1230 static void __exit s2mps11_pmic_exit(void)
1231 {
1232         platform_driver_unregister(&s2mps11_pmic_driver);
1233 }
1234 module_exit(s2mps11_pmic_exit);
1235
1236 /* Module information */
1237 MODULE_AUTHOR("Sangbeom Kim <sbkim73@samsung.com>");
1238 MODULE_DESCRIPTION("SAMSUNG S2MPS11/S2MPS14/S2MPS15/S2MPU02 Regulator Driver");
1239 MODULE_LICENSE("GPL");