drivers/regulator/as3722-regulator.c

   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2 /*
   3  * Voltage regulator support for AMS AS3722 PMIC
   4  *
   5  * Copyright (C) 2013 ams
   6  *
   7  * Author: Florian Lobmaier <florian.lobmaier@ams.com>
   8  * Author: Laxman Dewangan <ldewangan@nvidia.com>
   9  */
  10
  11 #include <linux/err.h>
  12 #include <linux/kernel.h>
  13 #include <linux/module.h>
  14 #include <linux/mfd/as3722.h>
  15 #include <linux/of.h>
  16 #include <linux/of_platform.h>
  17 #include <linux/platform_device.h>
  18 #include <linux/regulator/driver.h>
  19 #include <linux/regulator/machine.h>
  20 #include <linux/regulator/of_regulator.h>
  21 #include <linux/slab.h>
  22
  23 /* Regulator IDs */
  24 enum as3722_regulators_id {
  25         AS3722_REGULATOR_ID_SD0,
  26         AS3722_REGULATOR_ID_SD1,
  27         AS3722_REGULATOR_ID_SD2,
  28         AS3722_REGULATOR_ID_SD3,
  29         AS3722_REGULATOR_ID_SD4,
  30         AS3722_REGULATOR_ID_SD5,
  31         AS3722_REGULATOR_ID_SD6,
  32         AS3722_REGULATOR_ID_LDO0,
  33         AS3722_REGULATOR_ID_LDO1,
  34         AS3722_REGULATOR_ID_LDO2,
  35         AS3722_REGULATOR_ID_LDO3,
  36         AS3722_REGULATOR_ID_LDO4,
  37         AS3722_REGULATOR_ID_LDO5,
  38         AS3722_REGULATOR_ID_LDO6,
  39         AS3722_REGULATOR_ID_LDO7,
  40         AS3722_REGULATOR_ID_LDO9,
  41         AS3722_REGULATOR_ID_LDO10,
  42         AS3722_REGULATOR_ID_LDO11,
  43         AS3722_REGULATOR_ID_MAX,
  44 };
  45
  46 struct as3722_register_mapping {
  47         u8 regulator_id;
  48         const char *name;
  49         const char *sname;
  50         u8 vsel_reg;
  51         u8 vsel_mask;
  52         int n_voltages;
  53         u32 enable_reg;
  54         u8 enable_mask;
  55         u32 control_reg;
  56         u8 mode_mask;
  57         u32 sleep_ctrl_reg;
  58         u8 sleep_ctrl_mask;
  59 };
  60
  61 struct as3722_regulator_config_data {
  62         struct regulator_init_data *reg_init;
  63         bool enable_tracking;
  64         int ext_control;
  65 };
  66
  67 struct as3722_regulators {
  68         struct device *dev;
  69         struct as3722 *as3722;
  70         struct regulator_desc desc[AS3722_REGULATOR_ID_MAX];
  71         struct as3722_regulator_config_data
  72                         reg_config_data[AS3722_REGULATOR_ID_MAX];
  73 };
  74
  75 static const struct as3722_register_mapping as3722_reg_lookup[] = {
  76         {
  77                 .regulator_id = AS3722_REGULATOR_ID_SD0,
  78                 .name = "as3722-sd0",
  79                 .vsel_reg = AS3722_SD0_VOLTAGE_REG,
  80                 .vsel_mask = AS3722_SD_VSEL_MASK,
  81                 .enable_reg = AS3722_SD_CONTROL_REG,
  82                 .enable_mask = AS3722_SDn_CTRL(0),
  83                 .sleep_ctrl_reg = AS3722_ENABLE_CTRL1_REG,
  84                 .sleep_ctrl_mask = AS3722_SD0_EXT_ENABLE_MASK,
  85                 .control_reg = AS3722_SD0_CONTROL_REG,
  86                 .mode_mask = AS3722_SD0_MODE_FAST,
  87         },
  88         {
  89                 .regulator_id = AS3722_REGULATOR_ID_SD1,
  90                 .name = "as3722-sd1",
  91                 .vsel_reg = AS3722_SD1_VOLTAGE_REG,
  92                 .vsel_mask = AS3722_SD_VSEL_MASK,
  93                 .enable_reg = AS3722_SD_CONTROL_REG,
  94                 .enable_mask = AS3722_SDn_CTRL(1),
  95                 .sleep_ctrl_reg = AS3722_ENABLE_CTRL1_REG,
  96                 .sleep_ctrl_mask = AS3722_SD1_EXT_ENABLE_MASK,
  97                 .control_reg = AS3722_SD1_CONTROL_REG,
  98                 .mode_mask = AS3722_SD1_MODE_FAST,
  99         },
 100         {
 101                 .regulator_id = AS3722_REGULATOR_ID_SD2,
 102                 .name = "as3722-sd2",
 103                 .sname = "vsup-sd2",
 104                 .vsel_reg = AS3722_SD2_VOLTAGE_REG,
 105                 .vsel_mask = AS3722_SD_VSEL_MASK,
 106                 .enable_reg = AS3722_SD_CONTROL_REG,
 107                 .enable_mask = AS3722_SDn_CTRL(2),
 108                 .sleep_ctrl_reg = AS3722_ENABLE_CTRL1_REG,
 109                 .sleep_ctrl_mask = AS3722_SD2_EXT_ENABLE_MASK,
 110                 .control_reg = AS3722_SD23_CONTROL_REG,
 111                 .mode_mask = AS3722_SD2_MODE_FAST,
 112                 .n_voltages = AS3722_SD2_VSEL_MAX + 1,
 113         },
 114         {
 115                 .regulator_id = AS3722_REGULATOR_ID_SD3,
 116                 .name = "as3722-sd3",
 117                 .sname = "vsup-sd3",
 118                 .vsel_reg = AS3722_SD3_VOLTAGE_REG,
 119                 .vsel_mask = AS3722_SD_VSEL_MASK,
 120                 .enable_reg = AS3722_SD_CONTROL_REG,
 121                 .enable_mask = AS3722_SDn_CTRL(3),
 122                 .sleep_ctrl_reg = AS3722_ENABLE_CTRL1_REG,
 123                 .sleep_ctrl_mask = AS3722_SD3_EXT_ENABLE_MASK,
 124                 .control_reg = AS3722_SD23_CONTROL_REG,
 125                 .mode_mask = AS3722_SD3_MODE_FAST,
 126                 .n_voltages = AS3722_SD2_VSEL_MAX + 1,
 127         },
 128         {
 129                 .regulator_id = AS3722_REGULATOR_ID_SD4,
 130                 .name = "as3722-sd4",
 131                 .sname = "vsup-sd4",
 132                 .vsel_reg = AS3722_SD4_VOLTAGE_REG,
 133                 .vsel_mask = AS3722_SD_VSEL_MASK,
 134                 .enable_reg = AS3722_SD_CONTROL_REG,
 135                 .enable_mask = AS3722_SDn_CTRL(4),
 136                 .sleep_ctrl_reg = AS3722_ENABLE_CTRL2_REG,
 137                 .sleep_ctrl_mask = AS3722_SD4_EXT_ENABLE_MASK,
 138                 .control_reg = AS3722_SD4_CONTROL_REG,
 139                 .mode_mask = AS3722_SD4_MODE_FAST,
 140                 .n_voltages = AS3722_SD2_VSEL_MAX + 1,
 141         },
 142         {
 143                 .regulator_id = AS3722_REGULATOR_ID_SD5,
 144                 .name = "as3722-sd5",
 145                 .sname = "vsup-sd5",
 146                 .vsel_reg = AS3722_SD5_VOLTAGE_REG,
 147                 .vsel_mask = AS3722_SD_VSEL_MASK,
 148                 .enable_reg = AS3722_SD_CONTROL_REG,
 149                 .enable_mask = AS3722_SDn_CTRL(5),
 150                 .sleep_ctrl_reg = AS3722_ENABLE_CTRL2_REG,
 151                 .sleep_ctrl_mask = AS3722_SD5_EXT_ENABLE_MASK,
 152                 .control_reg = AS3722_SD5_CONTROL_REG,
 153                 .mode_mask = AS3722_SD5_MODE_FAST,
 154                 .n_voltages = AS3722_SD2_VSEL_MAX + 1,
 155         },
 156         {
 157                 .regulator_id = AS3722_REGULATOR_ID_SD6,
 158                 .name = "as3722-sd6",
 159                 .vsel_reg = AS3722_SD6_VOLTAGE_REG,
 160                 .vsel_mask = AS3722_SD_VSEL_MASK,
 161                 .enable_reg = AS3722_SD_CONTROL_REG,
 162                 .enable_mask = AS3722_SDn_CTRL(6),
 163                 .sleep_ctrl_reg = AS3722_ENABLE_CTRL2_REG,
 164                 .sleep_ctrl_mask = AS3722_SD6_EXT_ENABLE_MASK,
 165                 .control_reg = AS3722_SD6_CONTROL_REG,
 166                 .mode_mask = AS3722_SD6_MODE_FAST,
 167         },
 168         {
 169                 .regulator_id = AS3722_REGULATOR_ID_LDO0,
 170                 .name = "as3722-ldo0",
 171                 .sname = "vin-ldo0",
 172                 .vsel_reg = AS3722_LDO0_VOLTAGE_REG,
 173                 .vsel_mask = AS3722_LDO0_VSEL_MASK,
 174                 .enable_reg = AS3722_LDOCONTROL0_REG,
 175                 .enable_mask = AS3722_LDO0_CTRL,
 176                 .sleep_ctrl_reg = AS3722_ENABLE_CTRL3_REG,
 177                 .sleep_ctrl_mask = AS3722_LDO0_EXT_ENABLE_MASK,
 178                 .n_voltages = AS3722_LDO0_NUM_VOLT,
 179         },
 180         {
 181                 .regulator_id = AS3722_REGULATOR_ID_LDO1,
 182                 .name = "as3722-ldo1",
 183                 .sname = "vin-ldo1-6",
 184                 .vsel_reg = AS3722_LDO1_VOLTAGE_REG,
 185                 .vsel_mask = AS3722_LDO_VSEL_MASK,
 186                 .enable_reg = AS3722_LDOCONTROL0_REG,
 187                 .enable_mask = AS3722_LDO1_CTRL,
 188                 .sleep_ctrl_reg = AS3722_ENABLE_CTRL3_REG,
 189                 .sleep_ctrl_mask = AS3722_LDO1_EXT_ENABLE_MASK,
 190                 .n_voltages = AS3722_LDO_NUM_VOLT,
 191         },
 192         {
 193                 .regulator_id = AS3722_REGULATOR_ID_LDO2,
 194                 .name = "as3722-ldo2",
 195                 .sname = "vin-ldo2-5-7",
 196                 .vsel_reg = AS3722_LDO2_VOLTAGE_REG,
 197                 .vsel_mask = AS3722_LDO_VSEL_MASK,
 198                 .enable_reg = AS3722_LDOCONTROL0_REG,
 199                 .enable_mask = AS3722_LDO2_CTRL,
 200                 .sleep_ctrl_reg = AS3722_ENABLE_CTRL3_REG,
 201                 .sleep_ctrl_mask = AS3722_LDO2_EXT_ENABLE_MASK,
 202                 .n_voltages = AS3722_LDO_NUM_VOLT,
 203         },
 204         {
 205                 .regulator_id = AS3722_REGULATOR_ID_LDO3,
 206                 .name = "as3722-ldo3",
 207                 .sname = "vin-ldo3-4",
 208                 .vsel_reg = AS3722_LDO3_VOLTAGE_REG,
 209                 .vsel_mask = AS3722_LDO3_VSEL_MASK,
 210                 .enable_reg = AS3722_LDOCONTROL0_REG,
 211                 .enable_mask = AS3722_LDO3_CTRL,
 212                 .sleep_ctrl_reg = AS3722_ENABLE_CTRL3_REG,
 213                 .sleep_ctrl_mask = AS3722_LDO3_EXT_ENABLE_MASK,
 214                 .n_voltages = AS3722_LDO3_NUM_VOLT,
 215         },
 216         {
 217                 .regulator_id = AS3722_REGULATOR_ID_LDO4,
 218                 .name = "as3722-ldo4",
 219                 .sname = "vin-ldo3-4",
 220                 .vsel_reg = AS3722_LDO4_VOLTAGE_REG,
 221                 .vsel_mask = AS3722_LDO_VSEL_MASK,
 222                 .enable_reg = AS3722_LDOCONTROL0_REG,
 223                 .enable_mask = AS3722_LDO4_CTRL,
 224                 .sleep_ctrl_reg = AS3722_ENABLE_CTRL4_REG,
 225                 .sleep_ctrl_mask = AS3722_LDO4_EXT_ENABLE_MASK,
 226                 .n_voltages = AS3722_LDO_NUM_VOLT,
 227         },
 228         {
 229                 .regulator_id = AS3722_REGULATOR_ID_LDO5,
 230                 .name = "as3722-ldo5",
 231                 .sname = "vin-ldo2-5-7",
 232                 .vsel_reg = AS3722_LDO5_VOLTAGE_REG,
 233                 .vsel_mask = AS3722_LDO_VSEL_MASK,
 234                 .enable_reg = AS3722_LDOCONTROL0_REG,
 235                 .enable_mask = AS3722_LDO5_CTRL,
 236                 .sleep_ctrl_reg = AS3722_ENABLE_CTRL4_REG,
 237                 .sleep_ctrl_mask = AS3722_LDO5_EXT_ENABLE_MASK,
 238                 .n_voltages = AS3722_LDO_NUM_VOLT,
 239         },
 240         {
 241                 .regulator_id = AS3722_REGULATOR_ID_LDO6,
 242                 .name = "as3722-ldo6",
 243                 .sname = "vin-ldo1-6",
 244                 .vsel_reg = AS3722_LDO6_VOLTAGE_REG,
 245                 .vsel_mask = AS3722_LDO_VSEL_MASK,
 246                 .enable_reg = AS3722_LDOCONTROL0_REG,
 247                 .enable_mask = AS3722_LDO6_CTRL,
 248                 .sleep_ctrl_reg = AS3722_ENABLE_CTRL4_REG,
 249                 .sleep_ctrl_mask = AS3722_LDO6_EXT_ENABLE_MASK,
 250                 .n_voltages = AS3722_LDO_NUM_VOLT,
 251         },
 252         {
 253                 .regulator_id = AS3722_REGULATOR_ID_LDO7,
 254                 .name = "as3722-ldo7",
 255                 .sname = "vin-ldo2-5-7",
 256                 .vsel_reg = AS3722_LDO7_VOLTAGE_REG,
 257                 .vsel_mask = AS3722_LDO_VSEL_MASK,
 258                 .enable_reg = AS3722_LDOCONTROL0_REG,
 259                 .enable_mask = AS3722_LDO7_CTRL,
 260                 .sleep_ctrl_reg = AS3722_ENABLE_CTRL4_REG,
 261                 .sleep_ctrl_mask = AS3722_LDO7_EXT_ENABLE_MASK,
 262                 .n_voltages = AS3722_LDO_NUM_VOLT,
 263         },
 264         {
 265                 .regulator_id = AS3722_REGULATOR_ID_LDO9,
 266                 .name = "as3722-ldo9",
 267                 .sname = "vin-ldo9-10",
 268                 .vsel_reg = AS3722_LDO9_VOLTAGE_REG,
 269                 .vsel_mask = AS3722_LDO_VSEL_MASK,
 270                 .enable_reg = AS3722_LDOCONTROL1_REG,
 271                 .enable_mask = AS3722_LDO9_CTRL,
 272                 .sleep_ctrl_reg = AS3722_ENABLE_CTRL5_REG,
 273                 .sleep_ctrl_mask = AS3722_LDO9_EXT_ENABLE_MASK,
 274                 .n_voltages = AS3722_LDO_NUM_VOLT,
 275         },
 276         {
 277                 .regulator_id = AS3722_REGULATOR_ID_LDO10,
 278                 .name = "as3722-ldo10",
 279                 .sname = "vin-ldo9-10",
 280                 .vsel_reg = AS3722_LDO10_VOLTAGE_REG,
 281                 .vsel_mask = AS3722_LDO_VSEL_MASK,
 282                 .enable_reg = AS3722_LDOCONTROL1_REG,
 283                 .enable_mask = AS3722_LDO10_CTRL,
 284                 .sleep_ctrl_reg = AS3722_ENABLE_CTRL5_REG,
 285                 .sleep_ctrl_mask = AS3722_LDO10_EXT_ENABLE_MASK,
 286                 .n_voltages = AS3722_LDO_NUM_VOLT,
 287         },
 288         {
 289                 .regulator_id = AS3722_REGULATOR_ID_LDO11,
 290                 .name = "as3722-ldo11",
 291                 .sname = "vin-ldo11",
 292                 .vsel_reg = AS3722_LDO11_VOLTAGE_REG,
 293                 .vsel_mask = AS3722_LDO_VSEL_MASK,
 294                 .enable_reg = AS3722_LDOCONTROL1_REG,
 295                 .enable_mask = AS3722_LDO11_CTRL,
 296                 .sleep_ctrl_reg = AS3722_ENABLE_CTRL5_REG,
 297                 .sleep_ctrl_mask = AS3722_LDO11_EXT_ENABLE_MASK,
 298                 .n_voltages = AS3722_LDO_NUM_VOLT,
 299         },
 300 };
 301
 302 static const unsigned int as3722_ldo_current[] = { 150000, 300000 };
 303 static const unsigned int as3722_sd016_current[] = {
 304         2500000, 3000000, 3500000
 305 };
 306
 307 static const struct regulator_ops as3722_ldo0_ops = {
 308         .is_enabled = regulator_is_enabled_regmap,
 309         .enable = regulator_enable_regmap,
 310         .disable = regulator_disable_regmap,
 311         .list_voltage = regulator_list_voltage_linear,
 312         .get_voltage_sel = regulator_get_voltage_sel_regmap,
 313         .set_voltage_sel = regulator_set_voltage_sel_regmap,
 314         .get_current_limit = regulator_get_current_limit_regmap,
 315         .set_current_limit = regulator_set_current_limit_regmap,
 316 };
 317
 318 static const struct regulator_ops as3722_ldo0_extcntrl_ops = {
 319         .list_voltage = regulator_list_voltage_linear,
 320         .get_voltage_sel = regulator_get_voltage_sel_regmap,
 321         .set_voltage_sel = regulator_set_voltage_sel_regmap,
 322         .get_current_limit = regulator_get_current_limit_regmap,
 323         .set_current_limit = regulator_set_current_limit_regmap,
 324 };
 325
 326 static int as3722_ldo3_set_tracking_mode(struct as3722_regulators *as3722_reg,
 327                 int id, u8 mode)
 328 {
 329         struct as3722 *as3722 = as3722_reg->as3722;
 330
 331         switch (mode) {
 332         case AS3722_LDO3_MODE_PMOS:
 333         case AS3722_LDO3_MODE_PMOS_TRACKING:
 334         case AS3722_LDO3_MODE_NMOS:
 335         case AS3722_LDO3_MODE_SWITCH:
 336                 return as3722_update_bits(as3722,
 337                         as3722_reg_lookup[id].vsel_reg,
 338                         AS3722_LDO3_MODE_MASK, mode);
 339
 340         default:
 341                 return -EINVAL;
 342         }
 343 }
 344
 345 static int as3722_ldo3_get_current_limit(struct regulator_dev *rdev)
 346 {
 347         return 150000;
 348 }
 349
 350 static const struct regulator_ops as3722_ldo3_ops = {
 351         .is_enabled = regulator_is_enabled_regmap,
 352         .enable = regulator_enable_regmap,
 353         .disable = regulator_disable_regmap,
 354         .list_voltage = regulator_list_voltage_linear,
 355         .get_voltage_sel = regulator_get_voltage_sel_regmap,
 356         .set_voltage_sel = regulator_set_voltage_sel_regmap,
 357         .get_current_limit = as3722_ldo3_get_current_limit,
 358 };
 359
 360 static const struct regulator_ops as3722_ldo3_extcntrl_ops = {
 361         .list_voltage = regulator_list_voltage_linear,
 362         .get_voltage_sel = regulator_get_voltage_sel_regmap,
 363         .set_voltage_sel = regulator_set_voltage_sel_regmap,
 364         .get_current_limit = as3722_ldo3_get_current_limit,
 365 };
 366
 367 static const struct regulator_ops as3722_ldo6_ops = {
 368         .is_enabled = regulator_is_enabled_regmap,
 369         .enable = regulator_enable_regmap,
 370         .disable = regulator_disable_regmap,
 371         .map_voltage = regulator_map_voltage_linear_range,
 372         .set_voltage_sel = regulator_set_voltage_sel_regmap,
 373         .get_voltage_sel = regulator_get_voltage_sel_regmap,
 374         .list_voltage = regulator_list_voltage_linear_range,
 375         .get_current_limit = regulator_get_current_limit_regmap,
 376         .set_current_limit = regulator_set_current_limit_regmap,
 377         .get_bypass = regulator_get_bypass_regmap,
 378         .set_bypass = regulator_set_bypass_regmap,
 379 };
 380
 381 static const struct regulator_ops as3722_ldo6_extcntrl_ops = {
 382         .map_voltage = regulator_map_voltage_linear_range,
 383         .set_voltage_sel = regulator_set_voltage_sel_regmap,
 384         .get_voltage_sel = regulator_get_voltage_sel_regmap,
 385         .list_voltage = regulator_list_voltage_linear_range,
 386         .get_current_limit = regulator_get_current_limit_regmap,
 387         .set_current_limit = regulator_set_current_limit_regmap,
 388         .get_bypass = regulator_get_bypass_regmap,
 389         .set_bypass = regulator_set_bypass_regmap,
 390 };
 391
 392 static const struct regulator_linear_range as3722_ldo_ranges[] = {
 393         REGULATOR_LINEAR_RANGE(0, 0x00, 0x00, 0),
 394         REGULATOR_LINEAR_RANGE(825000, 0x01, 0x24, 25000),
 395         REGULATOR_LINEAR_RANGE(1725000, 0x40, 0x7F, 25000),
 396 };
 397
 398 static const struct regulator_ops as3722_ldo_ops = {
 399         .is_enabled = regulator_is_enabled_regmap,
 400         .enable = regulator_enable_regmap,
 401         .disable = regulator_disable_regmap,
 402         .map_voltage = regulator_map_voltage_linear_range,
 403         .set_voltage_sel = regulator_set_voltage_sel_regmap,
 404         .get_voltage_sel = regulator_get_voltage_sel_regmap,
 405         .list_voltage = regulator_list_voltage_linear_range,
 406         .get_current_limit = regulator_get_current_limit_regmap,
 407         .set_current_limit = regulator_set_current_limit_regmap,
 408 };
 409
 410 static const struct regulator_ops as3722_ldo_extcntrl_ops = {
 411         .map_voltage = regulator_map_voltage_linear_range,
 412         .set_voltage_sel = regulator_set_voltage_sel_regmap,
 413         .get_voltage_sel = regulator_get_voltage_sel_regmap,
 414         .list_voltage = regulator_list_voltage_linear_range,
 415         .get_current_limit = regulator_get_current_limit_regmap,
 416         .set_current_limit = regulator_set_current_limit_regmap,
 417 };
 418
 419 static unsigned int as3722_sd_get_mode(struct regulator_dev *rdev)
 420 {
 421         struct as3722_regulators *as3722_regs = rdev_get_drvdata(rdev);
 422         struct as3722 *as3722 = as3722_regs->as3722;
 423         int id = rdev_get_id(rdev);
 424         u32 val;
 425         int ret;
 426
 427         if (!as3722_reg_lookup[id].control_reg)
 428                 return -ENOTSUPP;
 429
 430         ret = as3722_read(as3722, as3722_reg_lookup[id].control_reg, &val);
 431         if (ret < 0) {
 432                 dev_err(as3722_regs->dev, "Reg 0x%02x read failed: %d\n",
 433                         as3722_reg_lookup[id].control_reg, ret);
 434                 return ret;
 435         }
 436
 437         if (val & as3722_reg_lookup[id].mode_mask)
 438                 return REGULATOR_MODE_FAST;
 439         else
 440                 return REGULATOR_MODE_NORMAL;
 441 }
 442
 443 static int as3722_sd_set_mode(struct regulator_dev *rdev,
 444                 unsigned int mode)
 445 {
 446         struct as3722_regulators *as3722_regs = rdev_get_drvdata(rdev);
 447         struct as3722 *as3722 = as3722_regs->as3722;
 448         u8 id = rdev_get_id(rdev);
 449         u8 val = 0;
 450         int ret;
 451
 452         if (!as3722_reg_lookup[id].control_reg)
 453                 return -ERANGE;
 454
 455         switch (mode) {
 456         case REGULATOR_MODE_FAST:
 457                 val = as3722_reg_lookup[id].mode_mask;
 458         case REGULATOR_MODE_NORMAL: /* fall down */
 459                 break;
 460         default:
 461                 return -EINVAL;
 462         }
 463
 464         ret = as3722_update_bits(as3722, as3722_reg_lookup[id].control_reg,
 465                         as3722_reg_lookup[id].mode_mask, val);
 466         if (ret < 0) {
 467                 dev_err(as3722_regs->dev, "Reg 0x%02x update failed: %d\n",
 468                         as3722_reg_lookup[id].control_reg, ret);
 469                 return ret;
 470         }
 471         return ret;
 472 }
 473
 474 static bool as3722_sd0_is_low_voltage(struct as3722_regulators *as3722_regs)
 475 {
 476         int err;
 477         unsigned val;
 478
 479         err = as3722_read(as3722_regs->as3722, AS3722_FUSE7_REG, &val);
 480         if (err < 0) {
 481                 dev_err(as3722_regs->dev, "Reg 0x%02x read failed: %d\n",
 482                         AS3722_FUSE7_REG, err);
 483                 return false;
 484         }
 485         if (val & AS3722_FUSE7_SD0_LOW_VOLTAGE)
 486                 return true;
 487         return false;
 488 }
 489
 490 static const struct regulator_linear_range as3722_sd2345_ranges[] = {
 491         REGULATOR_LINEAR_RANGE(0, 0x00, 0x00, 0),
 492         REGULATOR_LINEAR_RANGE(612500, 0x01, 0x40, 12500),
 493         REGULATOR_LINEAR_RANGE(1425000, 0x41, 0x70, 25000),
 494         REGULATOR_LINEAR_RANGE(2650000, 0x71, 0x7F, 50000),
 495 };
 496
 497 static const struct regulator_ops as3722_sd016_ops = {
 498         .is_enabled = regulator_is_enabled_regmap,
 499         .enable = regulator_enable_regmap,
 500         .disable = regulator_disable_regmap,
 501         .list_voltage = regulator_list_voltage_linear,
 502         .map_voltage = regulator_map_voltage_linear,
 503         .get_voltage_sel = regulator_get_voltage_sel_regmap,
 504         .set_voltage_sel = regulator_set_voltage_sel_regmap,
 505         .get_current_limit = regulator_get_current_limit_regmap,
 506         .set_current_limit = regulator_set_current_limit_regmap,
 507         .get_mode = as3722_sd_get_mode,
 508         .set_mode = as3722_sd_set_mode,
 509 };
 510
 511 static const struct regulator_ops as3722_sd016_extcntrl_ops = {
 512         .list_voltage = regulator_list_voltage_linear,
 513         .map_voltage = regulator_map_voltage_linear,
 514         .get_voltage_sel = regulator_get_voltage_sel_regmap,
 515         .set_voltage_sel = regulator_set_voltage_sel_regmap,
 516         .get_current_limit = regulator_get_current_limit_regmap,
 517         .set_current_limit = regulator_set_current_limit_regmap,
 518         .get_mode = as3722_sd_get_mode,
 519         .set_mode = as3722_sd_set_mode,
 520 };
 521
 522 static const struct regulator_ops as3722_sd2345_ops = {
 523         .is_enabled = regulator_is_enabled_regmap,
 524         .enable = regulator_enable_regmap,
 525         .disable = regulator_disable_regmap,
 526         .list_voltage = regulator_list_voltage_linear_range,
 527         .map_voltage = regulator_map_voltage_linear_range,
 528         .set_voltage_sel = regulator_set_voltage_sel_regmap,
 529         .get_voltage_sel = regulator_get_voltage_sel_regmap,
 530         .get_mode = as3722_sd_get_mode,
 531         .set_mode = as3722_sd_set_mode,
 532 };
 533
 534 static const struct regulator_ops as3722_sd2345_extcntrl_ops = {
 535         .list_voltage = regulator_list_voltage_linear_range,
 536         .map_voltage = regulator_map_voltage_linear_range,
 537         .set_voltage_sel = regulator_set_voltage_sel_regmap,
 538         .get_voltage_sel = regulator_get_voltage_sel_regmap,
 539         .get_mode = as3722_sd_get_mode,
 540         .set_mode = as3722_sd_set_mode,
 541 };
 542
 543 static int as3722_extreg_init(struct as3722_regulators *as3722_regs, int id,
 544                 int ext_pwr_ctrl)
 545 {
 546         int ret;
 547         unsigned int val;
 548
 549         if ((ext_pwr_ctrl < AS3722_EXT_CONTROL_ENABLE1) ||
 550                 (ext_pwr_ctrl > AS3722_EXT_CONTROL_ENABLE3))
 551                 return -EINVAL;
 552
 553         val =  ext_pwr_ctrl << (ffs(as3722_reg_lookup[id].sleep_ctrl_mask) - 1);
 554         ret = as3722_update_bits(as3722_regs->as3722,
 555                         as3722_reg_lookup[id].sleep_ctrl_reg,
 556                         as3722_reg_lookup[id].sleep_ctrl_mask, val);
 557         if (ret < 0)
 558                 dev_err(as3722_regs->dev, "Reg 0x%02x update failed: %d\n",
 559                         as3722_reg_lookup[id].sleep_ctrl_reg, ret);
 560         return ret;
 561 }
 562
 563 static struct of_regulator_match as3722_regulator_matches[] = {
 564         { .name = "sd0", },
 565         { .name = "sd1", },
 566         { .name = "sd2", },
 567         { .name = "sd3", },
 568         { .name = "sd4", },
 569         { .name = "sd5", },
 570         { .name = "sd6", },
 571         { .name = "ldo0", },
 572         { .name = "ldo1", },
 573         { .name = "ldo2", },
 574         { .name = "ldo3", },
 575         { .name = "ldo4", },
 576         { .name = "ldo5", },
 577         { .name = "ldo6", },
 578         { .name = "ldo7", },
 579         { .name = "ldo9", },
 580         { .name = "ldo10", },
 581         { .name = "ldo11", },
 582 };
 583
 584 static int as3722_get_regulator_dt_data(struct platform_device *pdev,
 585                 struct as3722_regulators *as3722_regs)
 586 {
 587         struct device_node *np;
 588         struct as3722_regulator_config_data *reg_config;
 589         u32 prop;
 590         int id;
 591         int ret;
 592
 593         np = of_get_child_by_name(pdev->dev.parent->of_node, "regulators");
 594         if (!np) {
 595                 dev_err(&pdev->dev, "Device is not having regulators node\n");
 596                 return -ENODEV;
 597         }
 598         pdev->dev.of_node = np;
 599
 600         ret = of_regulator_match(&pdev->dev, np, as3722_regulator_matches,
 601                         ARRAY_SIZE(as3722_regulator_matches));
 602         of_node_put(np);
 603         if (ret < 0) {
 604                 dev_err(&pdev->dev, "Parsing of regulator node failed: %d\n",
 605                         ret);
 606                 return ret;
 607         }
 608
 609         for (id = 0; id < ARRAY_SIZE(as3722_regulator_matches); ++id) {
 610                 struct device_node *reg_node;
 611
 612                 reg_config = &as3722_regs->reg_config_data[id];
 613                 reg_config->reg_init = as3722_regulator_matches[id].init_data;
 614                 reg_node = as3722_regulator_matches[id].of_node;
 615
 616                 if (!reg_config->reg_init || !reg_node)
 617                         continue;
 618
 619                 ret = of_property_read_u32(reg_node, "ams,ext-control", &prop);
 620                 if (!ret) {
 621                         if (prop < 3)
 622                                 reg_config->ext_control = prop;
 623                         else
 624                                 dev_warn(&pdev->dev,
 625                                         "ext-control have invalid option: %u\n",
 626                                         prop);
 627                 }
 628                 reg_config->enable_tracking =
 629                         of_property_read_bool(reg_node, "ams,enable-tracking");
 630         }
 631         return 0;
 632 }
 633
 634 static int as3722_regulator_probe(struct platform_device *pdev)
 635 {
 636         struct as3722 *as3722 = dev_get_drvdata(pdev->dev.parent);
 637         struct as3722_regulators *as3722_regs;
 638         struct as3722_regulator_config_data *reg_config;
 639         struct regulator_dev *rdev;
 640         struct regulator_config config = { };
 641         const struct regulator_ops *ops;
 642         int id;
 643         int ret;
 644
 645         as3722_regs = devm_kzalloc(&pdev->dev, sizeof(*as3722_regs),
 646                                 GFP_KERNEL);
 647         if (!as3722_regs)
 648                 return -ENOMEM;
 649
 650         as3722_regs->dev = &pdev->dev;
 651         as3722_regs->as3722 = as3722;
 652         platform_set_drvdata(pdev, as3722_regs);
 653
 654         ret = as3722_get_regulator_dt_data(pdev, as3722_regs);
 655         if (ret < 0)
 656                 return ret;
 657
 658         config.dev = &pdev->dev;
 659         config.driver_data = as3722_regs;
 660         config.regmap = as3722->regmap;
 661
 662         for (id = 0; id < AS3722_REGULATOR_ID_MAX; id++) {
 663                 struct regulator_desc *desc;
 664
 665                 desc = &as3722_regs->desc[id];
 666                 reg_config = &as3722_regs->reg_config_data[id];
 667
 668                 desc->name = as3722_reg_lookup[id].name;
 669                 desc->supply_name = as3722_reg_lookup[id].sname;
 670                 desc->id = as3722_reg_lookup[id].regulator_id;
 671                 desc->n_voltages = as3722_reg_lookup[id].n_voltages;
 672                 desc->type = REGULATOR_VOLTAGE;
 673                 desc->owner = THIS_MODULE;
 674                 desc->enable_reg = as3722_reg_lookup[id].enable_reg;
 675                 desc->enable_mask = as3722_reg_lookup[id].enable_mask;
 676                 desc->vsel_reg = as3722_reg_lookup[id].vsel_reg;
 677                 desc->vsel_mask = as3722_reg_lookup[id].vsel_mask;
 678                 switch (id) {
 679                 case AS3722_REGULATOR_ID_LDO0:
 680                         if (reg_config->ext_control)
 681                                 ops = &as3722_ldo0_extcntrl_ops;
 682                         else
 683                                 ops = &as3722_ldo0_ops;
 684                         desc->min_uV = 825000;
 685                         desc->uV_step = 25000;
 686                         desc->linear_min_sel = 1;
 687                         desc->enable_time = 500;
 688                         desc->curr_table = as3722_ldo_current;
 689                         desc->n_current_limits = ARRAY_SIZE(as3722_ldo_current);
 690                         desc->csel_reg = as3722_reg_lookup[id].vsel_reg;
 691                         desc->csel_mask = AS3722_LDO_ILIMIT_MASK;
 692                         break;
 693                 case AS3722_REGULATOR_ID_LDO3:
 694                         if (reg_config->ext_control)
 695                                 ops = &as3722_ldo3_extcntrl_ops;
 696                         else
 697                                 ops = &as3722_ldo3_ops;
 698                         desc->min_uV = 620000;
 699                         desc->uV_step = 20000;
 700                         desc->linear_min_sel = 1;
 701                         desc->enable_time = 500;
 702                         if (reg_config->enable_tracking) {
 703                                 ret = as3722_ldo3_set_tracking_mode(as3722_regs,
 704                                         id, AS3722_LDO3_MODE_PMOS_TRACKING);
 705                                 if (ret < 0) {
 706                                         dev_err(&pdev->dev,
 707                                                 "LDO3 tracking failed: %d\n",
 708                                                 ret);
 709                                         return ret;
 710                                 }
 711                         }
 712                         break;
 713                 case AS3722_REGULATOR_ID_LDO6:
 714                         if (reg_config->ext_control)
 715                                 ops = &as3722_ldo6_extcntrl_ops;
 716                         else
 717                                 ops = &as3722_ldo6_ops;
 718                         desc->enable_time = 500;
 719                         desc->bypass_reg = AS3722_LDO6_VOLTAGE_REG;
 720                         desc->bypass_mask = AS3722_LDO_VSEL_MASK;
 721                         desc->bypass_val_on = AS3722_LDO6_VSEL_BYPASS;
 722                         desc->bypass_val_off = AS3722_LDO6_VSEL_BYPASS;
 723                         desc->linear_ranges = as3722_ldo_ranges;
 724                         desc->n_linear_ranges = ARRAY_SIZE(as3722_ldo_ranges);
 725                         desc->curr_table = as3722_ldo_current;
 726                         desc->n_current_limits = ARRAY_SIZE(as3722_ldo_current);
 727                         desc->csel_reg = as3722_reg_lookup[id].vsel_reg;
 728                         desc->csel_mask = AS3722_LDO_ILIMIT_MASK;
 729                         break;
 730                 case AS3722_REGULATOR_ID_SD0:
 731                 case AS3722_REGULATOR_ID_SD1:
 732                 case AS3722_REGULATOR_ID_SD6:
 733                         if (reg_config->ext_control)
 734                                 ops = &as3722_sd016_extcntrl_ops;
 735                         else
 736                                 ops = &as3722_sd016_ops;
 737                         if (id == AS3722_REGULATOR_ID_SD0 &&
 738                             as3722_sd0_is_low_voltage(as3722_regs)) {
 739                                 as3722_regs->desc[id].n_voltages =
 740                                         AS3722_SD0_VSEL_LOW_VOL_MAX + 1;
 741                                 as3722_regs->desc[id].min_uV = 410000;
 742                         } else {
 743                                 as3722_regs->desc[id].n_voltages =
 744                                         AS3722_SD0_VSEL_MAX + 1;
 745                                 as3722_regs->desc[id].min_uV = 610000;
 746                         }
 747                         desc->uV_step = 10000;
 748                         desc->linear_min_sel = 1;
 749                         desc->enable_time = 600;
 750                         desc->curr_table = as3722_sd016_current;
 751                         desc->n_current_limits =
 752                                 ARRAY_SIZE(as3722_sd016_current);
 753                         if (id == AS3722_REGULATOR_ID_SD0) {
 754                                 desc->csel_reg = AS3722_OVCURRENT_REG;
 755                                 desc->csel_mask =
 756                                         AS3722_OVCURRENT_SD0_TRIP_MASK;
 757                         } else if (id == AS3722_REGULATOR_ID_SD1) {
 758                                 desc->csel_reg = AS3722_OVCURRENT_REG;
 759                                 desc->csel_mask =
 760                                         AS3722_OVCURRENT_SD1_TRIP_MASK;
 761                         } else if (id == AS3722_REGULATOR_ID_SD6) {
 762                                 desc->csel_reg = AS3722_OVCURRENT_DEB_REG;
 763                                 desc->csel_mask =
 764                                         AS3722_OVCURRENT_SD6_TRIP_MASK;
 765                         }
 766                         break;
 767                 case AS3722_REGULATOR_ID_SD2:
 768                 case AS3722_REGULATOR_ID_SD3:
 769                 case AS3722_REGULATOR_ID_SD4:
 770                 case AS3722_REGULATOR_ID_SD5:
 771                         if (reg_config->ext_control)
 772                                 ops = &as3722_sd2345_extcntrl_ops;
 773                         else
 774                                 ops = &as3722_sd2345_ops;
 775                         desc->linear_ranges = as3722_sd2345_ranges;
 776                         desc->n_linear_ranges =
 777                                         ARRAY_SIZE(as3722_sd2345_ranges);
 778                         break;
 779                 default:
 780                         if (reg_config->ext_control)
 781                                 ops = &as3722_ldo_extcntrl_ops;
 782                         else
 783                                 ops = &as3722_ldo_ops;
 784                         desc->enable_time = 500;
 785                         desc->linear_ranges = as3722_ldo_ranges;
 786                         desc->n_linear_ranges = ARRAY_SIZE(as3722_ldo_ranges);
 787                         desc->curr_table = as3722_ldo_current;
 788                         desc->n_current_limits = ARRAY_SIZE(as3722_ldo_current);
 789                         desc->csel_reg = as3722_reg_lookup[id].vsel_reg;
 790                         desc->csel_mask = AS3722_LDO_ILIMIT_MASK;
 791                         break;
 792                 }
 793                 desc->ops = ops;
 794                 config.init_data = reg_config->reg_init;
 795                 config.of_node = as3722_regulator_matches[id].of_node;
 796                 rdev = devm_regulator_register(&pdev->dev, desc, &config);
 797                 if (IS_ERR(rdev)) {
 798                         ret = PTR_ERR(rdev);
 799                         dev_err(&pdev->dev, "regulator %d register failed %d\n",
 800                                 id, ret);
 801                         return ret;
 802                 }
 803
 804                 if (reg_config->ext_control) {
 805                         ret = regulator_enable_regmap(rdev);
 806                         if (ret < 0) {
 807                                 dev_err(&pdev->dev,
 808                                         "Regulator %d enable failed: %d\n",
 809                                         id, ret);
 810                                 return ret;
 811                         }
 812                         ret = as3722_extreg_init(as3722_regs, id,
 813                                         reg_config->ext_control);
 814                         if (ret < 0) {
 815                                 dev_err(&pdev->dev,
 816                                         "AS3722 ext control failed: %d", ret);
 817                                 return ret;
 818                         }
 819                 }
 820         }
 821         return 0;
 822 }
 823
 824 static const struct of_device_id of_as3722_regulator_match[] = {
 825         { .compatible = "ams,as3722-regulator", },
 826         {},
 827 };
 828 MODULE_DEVICE_TABLE(of, of_as3722_regulator_match);
 829
 830 static struct platform_driver as3722_regulator_driver = {
 831         .driver = {
 832                 .name = "as3722-regulator",
 833                 .of_match_table = of_as3722_regulator_match,
 834         },
 835         .probe = as3722_regulator_probe,
 836 };
 837
 838 module_platform_driver(as3722_regulator_driver);
 839
 840 MODULE_ALIAS("platform:as3722-regulator");
 841 MODULE_DESCRIPTION("AS3722 regulator driver");
 842 MODULE_AUTHOR("Florian Lobmaier <florian.lobmaier@ams.com>");
 843 MODULE_AUTHOR("Laxman Dewangan <ldewangan@nvidia.com>");
 844 MODULE_LICENSE("GPL");