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