drivers/regulator/twl6030-regulator.c

   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2 /*
   3  * Split TWL6030 logic from twl-regulator.c:
   4  * Copyright (C) 2008 David Brownell
   5  *
   6  * Copyright (C) 2016 Nicolae Rosia <nicolae.rosia@gmail.com>
   7  */
   8
   9 #include <linux/module.h>
  10 #include <linux/string.h>
  11 #include <linux/slab.h>
  12 #include <linux/init.h>
  13 #include <linux/err.h>
  14 #include <linux/platform_device.h>
  15 #include <linux/of.h>
  16 #include <linux/regulator/driver.h>
  17 #include <linux/regulator/machine.h>
  18 #include <linux/regulator/of_regulator.h>
  19 #include <linux/mfd/twl.h>
  20 #include <linux/delay.h>
  21
  22 struct twlreg_info {
  23         /* start of regulator's PM_RECEIVER control register bank */
  24         u8                      base;
  25
  26         /* twl resource ID, for resource control state machine */
  27         u8                      id;
  28
  29         u8                      flags;
  30
  31         /* used by regulator core */
  32         struct regulator_desc   desc;
  33
  34         /* chip specific features */
  35         unsigned long           features;
  36
  37         /* data passed from board for external get/set voltage */
  38         void                    *data;
  39 };
  40
  41
  42 /* LDO control registers ... offset is from the base of its register bank.
  43  * The first three registers of all power resource banks help hardware to
  44  * manage the various resource groups.
  45  */
  46 /* Common offset in TWL4030/6030 */
  47 #define VREG_GRP                0
  48 /* TWL6030 register offsets */
  49 #define VREG_TRANS              1
  50 #define VREG_STATE              2
  51 #define VREG_VOLTAGE            3
  52 #define VREG_VOLTAGE_SMPS       4
  53 /* TWL6030 Misc register offsets */
  54 #define VREG_BC_ALL             1
  55 #define VREG_BC_REF             2
  56 #define VREG_BC_PROC            3
  57 #define VREG_BC_CLK_RST         4
  58
  59 /* TWL6030 LDO register values for VREG_VOLTAGE */
  60 #define TWL6030_VREG_VOLTAGE_WR_S   BIT(7)
  61
  62 /* TWL6030 LDO register values for CFG_STATE */
  63 #define TWL6030_CFG_STATE_OFF   0x00
  64 #define TWL6030_CFG_STATE_ON    0x01
  65 #define TWL6030_CFG_STATE_OFF2  0x02
  66 #define TWL6030_CFG_STATE_SLEEP 0x03
  67 #define TWL6030_CFG_STATE_GRP_SHIFT     5
  68 #define TWL6030_CFG_STATE_APP_SHIFT     2
  69 #define TWL6030_CFG_STATE_MASK          0x03
  70 #define TWL6030_CFG_STATE_APP_MASK      (0x03 << TWL6030_CFG_STATE_APP_SHIFT)
  71 #define TWL6030_CFG_STATE_APP(v)        (((v) & TWL6030_CFG_STATE_APP_MASK) >>\
  72                                                 TWL6030_CFG_STATE_APP_SHIFT)
  73
  74 /* Flags for SMPS Voltage reading and LDO reading*/
  75 #define SMPS_OFFSET_EN          BIT(0)
  76 #define SMPS_EXTENDED_EN        BIT(1)
  77 #define TWL_6030_WARM_RESET     BIT(3)
  78
  79 /* twl6032 SMPS EPROM values */
  80 #define TWL6030_SMPS_OFFSET             0xB0
  81 #define TWL6030_SMPS_MULT               0xB3
  82 #define SMPS_MULTOFFSET_SMPS4   BIT(0)
  83 #define SMPS_MULTOFFSET_VIO     BIT(1)
  84 #define SMPS_MULTOFFSET_SMPS3   BIT(6)
  85
  86 static inline int
  87 twlreg_read(struct twlreg_info *info, unsigned slave_subgp, unsigned offset)
  88 {
  89         u8 value;
  90         int status;
  91
  92         status = twl_i2c_read_u8(slave_subgp,
  93                         &value, info->base + offset);
  94         return (status < 0) ? status : value;
  95 }
  96
  97 static inline int
  98 twlreg_write(struct twlreg_info *info, unsigned slave_subgp, unsigned offset,
  99                                                  u8 value)
 100 {
 101         return twl_i2c_write_u8(slave_subgp,
 102                         value, info->base + offset);
 103 }
 104
 105 /* generic power resource operations, which work on all regulators */
 106 static int twlreg_grp(struct regulator_dev *rdev)
 107 {
 108         return twlreg_read(rdev_get_drvdata(rdev), TWL_MODULE_PM_RECEIVER,
 109                                                                  VREG_GRP);
 110 }
 111
 112 /*
 113  * Enable/disable regulators by joining/leaving the P1 (processor) group.
 114  * We assume nobody else is updating the DEV_GRP registers.
 115  */
 116 /* definition for 6030 family */
 117 #define P3_GRP_6030     BIT(2)          /* secondary processor, modem, etc */
 118 #define P2_GRP_6030     BIT(1)          /* "peripherals" */
 119 #define P1_GRP_6030     BIT(0)          /* CPU/Linux */
 120
 121 static int twl6030reg_is_enabled(struct regulator_dev *rdev)
 122 {
 123         struct twlreg_info      *info = rdev_get_drvdata(rdev);
 124         int                     grp = 0, val;
 125
 126         if (!(twl_class_is_6030() && (info->features & TWL6032_SUBCLASS))) {
 127                 grp = twlreg_grp(rdev);
 128                 if (grp < 0)
 129                         return grp;
 130                 grp &= P1_GRP_6030;
 131                 val = twlreg_read(info, TWL_MODULE_PM_RECEIVER, VREG_STATE);
 132                 val = TWL6030_CFG_STATE_APP(val);
 133         } else {
 134                 val = twlreg_read(info, TWL_MODULE_PM_RECEIVER, VREG_STATE);
 135                 val &= TWL6030_CFG_STATE_MASK;
 136                 grp = 1;
 137         }
 138
 139         return grp && (val == TWL6030_CFG_STATE_ON);
 140 }
 141
 142 #define PB_I2C_BUSY     BIT(0)
 143 #define PB_I2C_BWEN     BIT(1)
 144
 145
 146 static int twl6030reg_enable(struct regulator_dev *rdev)
 147 {
 148         struct twlreg_info      *info = rdev_get_drvdata(rdev);
 149         int                     grp = 0;
 150         int                     ret;
 151
 152         if (!(twl_class_is_6030() && (info->features & TWL6032_SUBCLASS)))
 153                 grp = twlreg_grp(rdev);
 154         if (grp < 0)
 155                 return grp;
 156
 157         ret = twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_STATE,
 158                         grp << TWL6030_CFG_STATE_GRP_SHIFT |
 159                         TWL6030_CFG_STATE_ON);
 160         return ret;
 161 }
 162
 163 static int twl6030reg_disable(struct regulator_dev *rdev)
 164 {
 165         struct twlreg_info      *info = rdev_get_drvdata(rdev);
 166         int                     grp = 0;
 167         int                     ret;
 168
 169         if (!(twl_class_is_6030() && (info->features & TWL6032_SUBCLASS)))
 170                 grp = P1_GRP_6030 | P2_GRP_6030 | P3_GRP_6030;
 171
 172         /* For 6030, set the off state for all grps enabled */
 173         ret = twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_STATE,
 174                         (grp) << TWL6030_CFG_STATE_GRP_SHIFT |
 175                         TWL6030_CFG_STATE_OFF);
 176
 177         return ret;
 178 }
 179
 180 static int twl6030reg_get_status(struct regulator_dev *rdev)
 181 {
 182         struct twlreg_info      *info = rdev_get_drvdata(rdev);
 183         int                     val;
 184
 185         val = twlreg_grp(rdev);
 186         if (val < 0)
 187                 return val;
 188
 189         val = twlreg_read(info, TWL_MODULE_PM_RECEIVER, VREG_STATE);
 190
 191         if (info->features & TWL6032_SUBCLASS)
 192                 val &= TWL6030_CFG_STATE_MASK;
 193         else
 194                 val = TWL6030_CFG_STATE_APP(val);
 195
 196         switch (val) {
 197         case TWL6030_CFG_STATE_ON:
 198                 return REGULATOR_STATUS_NORMAL;
 199
 200         case TWL6030_CFG_STATE_SLEEP:
 201                 return REGULATOR_STATUS_STANDBY;
 202
 203         case TWL6030_CFG_STATE_OFF:
 204         case TWL6030_CFG_STATE_OFF2:
 205         default:
 206                 break;
 207         }
 208
 209         return REGULATOR_STATUS_OFF;
 210 }
 211
 212 static int twl6030reg_set_mode(struct regulator_dev *rdev, unsigned mode)
 213 {
 214         struct twlreg_info      *info = rdev_get_drvdata(rdev);
 215         int grp = 0;
 216         int val;
 217
 218         if (!(twl_class_is_6030() && (info->features & TWL6032_SUBCLASS)))
 219                 grp = twlreg_grp(rdev);
 220
 221         if (grp < 0)
 222                 return grp;
 223
 224         /* Compose the state register settings */
 225         val = grp << TWL6030_CFG_STATE_GRP_SHIFT;
 226         /* We can only set the mode through state machine commands... */
 227         switch (mode) {
 228         case REGULATOR_MODE_NORMAL:
 229                 val |= TWL6030_CFG_STATE_ON;
 230                 break;
 231         case REGULATOR_MODE_STANDBY:
 232                 val |= TWL6030_CFG_STATE_SLEEP;
 233                 break;
 234
 235         default:
 236                 return -EINVAL;
 237         }
 238
 239         return twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_STATE, val);
 240 }
 241
 242 static int twl6030coresmps_set_voltage(struct regulator_dev *rdev, int min_uV,
 243         int max_uV, unsigned *selector)
 244 {
 245         return -ENODEV;
 246 }
 247
 248 static int twl6030coresmps_get_voltage(struct regulator_dev *rdev)
 249 {
 250         return -ENODEV;
 251 }
 252
 253 static const struct regulator_ops twl6030coresmps_ops = {
 254         .set_voltage    = twl6030coresmps_set_voltage,
 255         .get_voltage    = twl6030coresmps_get_voltage,
 256 };
 257
 258 static int
 259 twl6030ldo_set_voltage_sel(struct regulator_dev *rdev, unsigned selector)
 260 {
 261         struct twlreg_info      *info = rdev_get_drvdata(rdev);
 262
 263         if (info->flags & TWL_6030_WARM_RESET)
 264                 selector |= TWL6030_VREG_VOLTAGE_WR_S;
 265
 266         return twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_VOLTAGE,
 267                             selector);
 268 }
 269
 270 static int twl6030ldo_get_voltage_sel(struct regulator_dev *rdev)
 271 {
 272         struct twlreg_info      *info = rdev_get_drvdata(rdev);
 273         int vsel = twlreg_read(info, TWL_MODULE_PM_RECEIVER, VREG_VOLTAGE);
 274
 275         if (info->flags & TWL_6030_WARM_RESET)
 276                 vsel &= ~TWL6030_VREG_VOLTAGE_WR_S;
 277
 278         return vsel;
 279 }
 280
 281 static const struct regulator_ops twl6030ldo_ops = {
 282         .list_voltage   = regulator_list_voltage_linear_range,
 283
 284         .set_voltage_sel = twl6030ldo_set_voltage_sel,
 285         .get_voltage_sel = twl6030ldo_get_voltage_sel,
 286
 287         .enable         = twl6030reg_enable,
 288         .disable        = twl6030reg_disable,
 289         .is_enabled     = twl6030reg_is_enabled,
 290
 291         .set_mode       = twl6030reg_set_mode,
 292
 293         .get_status     = twl6030reg_get_status,
 294 };
 295
 296 static const struct regulator_ops twl6030fixed_ops = {
 297         .list_voltage   = regulator_list_voltage_linear,
 298
 299         .enable         = twl6030reg_enable,
 300         .disable        = twl6030reg_disable,
 301         .is_enabled     = twl6030reg_is_enabled,
 302
 303         .set_mode       = twl6030reg_set_mode,
 304
 305         .get_status     = twl6030reg_get_status,
 306 };
 307
 308 /*
 309  * SMPS status and control
 310  */
 311
 312 static int twl6030smps_list_voltage(struct regulator_dev *rdev, unsigned index)
 313 {
 314         struct twlreg_info      *info = rdev_get_drvdata(rdev);
 315
 316         int voltage = 0;
 317
 318         switch (info->flags) {
 319         case SMPS_OFFSET_EN:
 320                 voltage = 100000;
 321                 fallthrough;
 322         case 0:
 323                 switch (index) {
 324                 case 0:
 325                         voltage = 0;
 326                         break;
 327                 case 58:
 328                         voltage = 1350 * 1000;
 329                         break;
 330                 case 59:
 331                         voltage = 1500 * 1000;
 332                         break;
 333                 case 60:
 334                         voltage = 1800 * 1000;
 335                         break;
 336                 case 61:
 337                         voltage = 1900 * 1000;
 338                         break;
 339                 case 62:
 340                         voltage = 2100 * 1000;
 341                         break;
 342                 default:
 343                         voltage += (600000 + (12500 * (index - 1)));
 344                 }
 345                 break;
 346         case SMPS_EXTENDED_EN:
 347                 switch (index) {
 348                 case 0:
 349                         voltage = 0;
 350                         break;
 351                 case 58:
 352                         voltage = 2084 * 1000;
 353                         break;
 354                 case 59:
 355                         voltage = 2315 * 1000;
 356                         break;
 357                 case 60:
 358                         voltage = 2778 * 1000;
 359                         break;
 360                 case 61:
 361                         voltage = 2932 * 1000;
 362                         break;
 363                 case 62:
 364                         voltage = 3241 * 1000;
 365                         break;
 366                 default:
 367                         voltage = (1852000 + (38600 * (index - 1)));
 368                 }
 369                 break;
 370         case SMPS_OFFSET_EN | SMPS_EXTENDED_EN:
 371                 switch (index) {
 372                 case 0:
 373                         voltage = 0;
 374                         break;
 375                 case 58:
 376                         voltage = 4167 * 1000;
 377                         break;
 378                 case 59:
 379                         voltage = 2315 * 1000;
 380                         break;
 381                 case 60:
 382                         voltage = 2778 * 1000;
 383                         break;
 384                 case 61:
 385                         voltage = 2932 * 1000;
 386                         break;
 387                 case 62:
 388                         voltage = 3241 * 1000;
 389                         break;
 390                 default:
 391                         voltage = (2161000 + (38600 * (index - 1)));
 392                 }
 393                 break;
 394         }
 395
 396         return voltage;
 397 }
 398
 399 static int twl6030smps_map_voltage(struct regulator_dev *rdev, int min_uV,
 400                                    int max_uV)
 401 {
 402         struct twlreg_info *info = rdev_get_drvdata(rdev);
 403         int vsel = 0;
 404
 405         switch (info->flags) {
 406         case 0:
 407                 if (min_uV == 0)
 408                         vsel = 0;
 409                 else if ((min_uV >= 600000) && (min_uV <= 1300000)) {
 410                         vsel = DIV_ROUND_UP(min_uV - 600000, 12500);
 411                         vsel++;
 412                 }
 413                 /* Values 1..57 for vsel are linear and can be calculated
 414                  * values 58..62 are non linear.
 415                  */
 416                 else if ((min_uV > 1900000) && (min_uV <= 2100000))
 417                         vsel = 62;
 418                 else if ((min_uV > 1800000) && (min_uV <= 1900000))
 419                         vsel = 61;
 420                 else if ((min_uV > 1500000) && (min_uV <= 1800000))
 421                         vsel = 60;
 422                 else if ((min_uV > 1350000) && (min_uV <= 1500000))
 423                         vsel = 59;
 424                 else if ((min_uV > 1300000) && (min_uV <= 1350000))
 425                         vsel = 58;
 426                 else
 427                         return -EINVAL;
 428                 break;
 429         case SMPS_OFFSET_EN:
 430                 if (min_uV == 0)
 431                         vsel = 0;
 432                 else if ((min_uV >= 700000) && (min_uV <= 1420000)) {
 433                         vsel = DIV_ROUND_UP(min_uV - 700000, 12500);
 434                         vsel++;
 435                 }
 436                 /* Values 1..57 for vsel are linear and can be calculated
 437                  * values 58..62 are non linear.
 438                  */
 439                 else if ((min_uV > 1900000) && (min_uV <= 2100000))
 440                         vsel = 62;
 441                 else if ((min_uV > 1800000) && (min_uV <= 1900000))
 442                         vsel = 61;
 443                 else if ((min_uV > 1500000) && (min_uV <= 1800000))
 444                         vsel = 60;
 445                 else if ((min_uV > 1350000) && (min_uV <= 1500000))
 446                         vsel = 59;
 447                 else
 448                         return -EINVAL;
 449                 break;
 450         case SMPS_EXTENDED_EN:
 451                 if (min_uV == 0) {
 452                         vsel = 0;
 453                 } else if ((min_uV >= 1852000) && (max_uV <= 4013600)) {
 454                         vsel = DIV_ROUND_UP(min_uV - 1852000, 38600);
 455                         vsel++;
 456                 }
 457                 break;
 458         case SMPS_OFFSET_EN|SMPS_EXTENDED_EN:
 459                 if (min_uV == 0) {
 460                         vsel = 0;
 461                 } else if ((min_uV >= 2161000) && (min_uV <= 4321000)) {
 462                         vsel = DIV_ROUND_UP(min_uV - 2161000, 38600);
 463                         vsel++;
 464                 }
 465                 break;
 466         }
 467
 468         return vsel;
 469 }
 470
 471 static int twl6030smps_set_voltage_sel(struct regulator_dev *rdev,
 472                                        unsigned int selector)
 473 {
 474         struct twlreg_info *info = rdev_get_drvdata(rdev);
 475
 476         return twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_VOLTAGE_SMPS,
 477                             selector);
 478 }
 479
 480 static int twl6030smps_get_voltage_sel(struct regulator_dev *rdev)
 481 {
 482         struct twlreg_info      *info = rdev_get_drvdata(rdev);
 483
 484         return twlreg_read(info, TWL_MODULE_PM_RECEIVER, VREG_VOLTAGE_SMPS);
 485 }
 486
 487 static const struct regulator_ops twlsmps_ops = {
 488         .list_voltage           = twl6030smps_list_voltage,
 489         .map_voltage            = twl6030smps_map_voltage,
 490
 491         .set_voltage_sel        = twl6030smps_set_voltage_sel,
 492         .get_voltage_sel        = twl6030smps_get_voltage_sel,
 493
 494         .enable                 = twl6030reg_enable,
 495         .disable                = twl6030reg_disable,
 496         .is_enabled             = twl6030reg_is_enabled,
 497
 498         .set_mode               = twl6030reg_set_mode,
 499
 500         .get_status             = twl6030reg_get_status,
 501 };
 502
 503 /*----------------------------------------------------------------------*/
 504 static const struct linear_range twl6030ldo_linear_range[] = {
 505         REGULATOR_LINEAR_RANGE(0, 0, 0, 0),
 506         REGULATOR_LINEAR_RANGE(1000000, 1, 24, 100000),
 507         REGULATOR_LINEAR_RANGE(2750000, 31, 31, 0),
 508 };
 509
 510 #define TWL6030_ADJUSTABLE_SMPS(label) \
 511 static const struct twlreg_info TWL6030_INFO_##label = { \
 512         .desc = { \
 513                 .name = #label, \
 514                 .id = TWL6030_REG_##label, \
 515                 .ops = &twl6030coresmps_ops, \
 516                 .type = REGULATOR_VOLTAGE, \
 517                 .owner = THIS_MODULE, \
 518                 }, \
 519         }
 520
 521 #define TWL6030_ADJUSTABLE_LDO(label, offset) \
 522 static const struct twlreg_info TWL6030_INFO_##label = { \
 523         .base = offset, \
 524         .desc = { \
 525                 .name = #label, \
 526                 .id = TWL6030_REG_##label, \
 527                 .n_voltages = 32, \
 528                 .linear_ranges = twl6030ldo_linear_range, \
 529                 .n_linear_ranges = ARRAY_SIZE(twl6030ldo_linear_range), \
 530                 .ops = &twl6030ldo_ops, \
 531                 .type = REGULATOR_VOLTAGE, \
 532                 .owner = THIS_MODULE, \
 533                 }, \
 534         }
 535
 536 #define TWL6032_ADJUSTABLE_LDO(label, offset) \
 537 static const struct twlreg_info TWL6032_INFO_##label = { \
 538         .base = offset, \
 539         .features = TWL6032_SUBCLASS, \
 540         .desc = { \
 541                 .name = #label, \
 542                 .id = TWL6032_REG_##label, \
 543                 .n_voltages = 32, \
 544                 .linear_ranges = twl6030ldo_linear_range, \
 545                 .n_linear_ranges = ARRAY_SIZE(twl6030ldo_linear_range), \
 546                 .ops = &twl6030ldo_ops, \
 547                 .type = REGULATOR_VOLTAGE, \
 548                 .owner = THIS_MODULE, \
 549                 }, \
 550         }
 551
 552 #define TWL6030_FIXED_LDO(label, offset, mVolts, turnon_delay) \
 553 static const struct twlreg_info TWLFIXED_INFO_##label = { \
 554         .base = offset, \
 555         .id = 0, \
 556         .desc = { \
 557                 .name = #label, \
 558                 .id = TWL6030##_REG_##label, \
 559                 .n_voltages = 1, \
 560                 .ops = &twl6030fixed_ops, \
 561                 .type = REGULATOR_VOLTAGE, \
 562                 .owner = THIS_MODULE, \
 563                 .min_uV = mVolts * 1000, \
 564                 .enable_time = turnon_delay, \
 565                 .of_map_mode = NULL, \
 566                 }, \
 567         }
 568
 569 #define TWL6032_ADJUSTABLE_SMPS(label, offset) \
 570 static const struct twlreg_info TWLSMPS_INFO_##label = { \
 571         .base = offset, \
 572         .features = TWL6032_SUBCLASS, \
 573         .desc = { \
 574                 .name = #label, \
 575                 .id = TWL6032_REG_##label, \
 576                 .n_voltages = 63, \
 577                 .ops = &twlsmps_ops, \
 578                 .type = REGULATOR_VOLTAGE, \
 579                 .owner = THIS_MODULE, \
 580                 }, \
 581         }
 582
 583 /* VUSBCP is managed *only* by the USB subchip */
 584 /* 6030 REG with base as PMC Slave Misc : 0x0030 */
 585 /* Turnon-delay and remap configuration values for 6030 are not
 586    verified since the specification is not public */
 587 TWL6030_ADJUSTABLE_SMPS(VDD1);
 588 TWL6030_ADJUSTABLE_SMPS(VDD2);
 589 TWL6030_ADJUSTABLE_SMPS(VDD3);
 590 TWL6030_ADJUSTABLE_LDO(VAUX1_6030, 0x54);
 591 TWL6030_ADJUSTABLE_LDO(VAUX2_6030, 0x58);
 592 TWL6030_ADJUSTABLE_LDO(VAUX3_6030, 0x5c);
 593 TWL6030_ADJUSTABLE_LDO(VMMC, 0x68);
 594 TWL6030_ADJUSTABLE_LDO(VPP, 0x6c);
 595 TWL6030_ADJUSTABLE_LDO(VUSIM, 0x74);
 596 /* 6025 are renamed compared to 6030 versions */
 597 TWL6032_ADJUSTABLE_LDO(LDO2, 0x54);
 598 TWL6032_ADJUSTABLE_LDO(LDO4, 0x58);
 599 TWL6032_ADJUSTABLE_LDO(LDO3, 0x5c);
 600 TWL6032_ADJUSTABLE_LDO(LDO5, 0x68);
 601 TWL6032_ADJUSTABLE_LDO(LDO1, 0x6c);
 602 TWL6032_ADJUSTABLE_LDO(LDO7, 0x74);
 603 TWL6032_ADJUSTABLE_LDO(LDO6, 0x60);
 604 TWL6032_ADJUSTABLE_LDO(LDOLN, 0x64);
 605 TWL6032_ADJUSTABLE_LDO(LDOUSB, 0x70);
 606 TWL6030_FIXED_LDO(VANA, 0x50, 2100, 0);
 607 TWL6030_FIXED_LDO(VCXIO, 0x60, 1800, 0);
 608 TWL6030_FIXED_LDO(VDAC, 0x64, 1800, 0);
 609 TWL6030_FIXED_LDO(VUSB, 0x70, 3300, 0);
 610 TWL6030_FIXED_LDO(V1V8, 0x16, 1800, 0);
 611 TWL6030_FIXED_LDO(V2V1, 0x1c, 2100, 0);
 612 TWL6032_ADJUSTABLE_SMPS(SMPS3, 0x34);
 613 TWL6032_ADJUSTABLE_SMPS(SMPS4, 0x10);
 614 TWL6032_ADJUSTABLE_SMPS(VIO, 0x16);
 615
 616 static u8 twl_get_smps_offset(void)
 617 {
 618         u8 value;
 619
 620         twl_i2c_read_u8(TWL_MODULE_PM_RECEIVER, &value,
 621                         TWL6030_SMPS_OFFSET);
 622         return value;
 623 }
 624
 625 static u8 twl_get_smps_mult(void)
 626 {
 627         u8 value;
 628
 629         twl_i2c_read_u8(TWL_MODULE_PM_RECEIVER, &value,
 630                         TWL6030_SMPS_MULT);
 631         return value;
 632 }
 633
 634 #define TWL_OF_MATCH(comp, family, label) \
 635         { \
 636                 .compatible = comp, \
 637                 .data = &family##_INFO_##label, \
 638         }
 639
 640 #define TWL6030_OF_MATCH(comp, label) TWL_OF_MATCH(comp, TWL6030, label)
 641 #define TWL6032_OF_MATCH(comp, label) TWL_OF_MATCH(comp, TWL6032, label)
 642 #define TWLFIXED_OF_MATCH(comp, label) TWL_OF_MATCH(comp, TWLFIXED, label)
 643 #define TWLSMPS_OF_MATCH(comp, label) TWL_OF_MATCH(comp, TWLSMPS, label)
 644
 645 static const struct of_device_id twl_of_match[] = {
 646         TWL6030_OF_MATCH("ti,twl6030-vdd1", VDD1),
 647         TWL6030_OF_MATCH("ti,twl6030-vdd2", VDD2),
 648         TWL6030_OF_MATCH("ti,twl6030-vdd3", VDD3),
 649         TWL6030_OF_MATCH("ti,twl6030-vaux1", VAUX1_6030),
 650         TWL6030_OF_MATCH("ti,twl6030-vaux2", VAUX2_6030),
 651         TWL6030_OF_MATCH("ti,twl6030-vaux3", VAUX3_6030),
 652         TWL6030_OF_MATCH("ti,twl6030-vmmc", VMMC),
 653         TWL6030_OF_MATCH("ti,twl6030-vpp", VPP),
 654         TWL6030_OF_MATCH("ti,twl6030-vusim", VUSIM),
 655         TWL6032_OF_MATCH("ti,twl6032-ldo2", LDO2),
 656         TWL6032_OF_MATCH("ti,twl6032-ldo4", LDO4),
 657         TWL6032_OF_MATCH("ti,twl6032-ldo3", LDO3),
 658         TWL6032_OF_MATCH("ti,twl6032-ldo5", LDO5),
 659         TWL6032_OF_MATCH("ti,twl6032-ldo1", LDO1),
 660         TWL6032_OF_MATCH("ti,twl6032-ldo7", LDO7),
 661         TWL6032_OF_MATCH("ti,twl6032-ldo6", LDO6),
 662         TWL6032_OF_MATCH("ti,twl6032-ldoln", LDOLN),
 663         TWL6032_OF_MATCH("ti,twl6032-ldousb", LDOUSB),
 664         TWLFIXED_OF_MATCH("ti,twl6030-vana", VANA),
 665         TWLFIXED_OF_MATCH("ti,twl6030-vcxio", VCXIO),
 666         TWLFIXED_OF_MATCH("ti,twl6030-vdac", VDAC),
 667         TWLFIXED_OF_MATCH("ti,twl6030-vusb", VUSB),
 668         TWLFIXED_OF_MATCH("ti,twl6030-v1v8", V1V8),
 669         TWLFIXED_OF_MATCH("ti,twl6030-v2v1", V2V1),
 670         TWLSMPS_OF_MATCH("ti,twl6032-smps3", SMPS3),
 671         TWLSMPS_OF_MATCH("ti,twl6032-smps4", SMPS4),
 672         TWLSMPS_OF_MATCH("ti,twl6032-vio", VIO),
 673         {},
 674 };
 675 MODULE_DEVICE_TABLE(of, twl_of_match);
 676
 677 static int twlreg_probe(struct platform_device *pdev)
 678 {
 679         int id;
 680         struct twlreg_info              *info;
 681         const struct twlreg_info        *template;
 682         struct regulator_init_data      *initdata;
 683         struct regulation_constraints   *c;
 684         struct regulator_dev            *rdev;
 685         struct regulator_config         config = { };
 686         struct device_node              *np = pdev->dev.of_node;
 687
 688         template = of_device_get_match_data(&pdev->dev);
 689         if (!template)
 690                 return -ENODEV;
 691
 692         id = template->desc.id;
 693         initdata = of_get_regulator_init_data(&pdev->dev, np, &template->desc);
 694         if (!initdata)
 695                 return -EINVAL;
 696
 697         info = devm_kmemdup(&pdev->dev, template, sizeof(*info), GFP_KERNEL);
 698         if (!info)
 699                 return -ENOMEM;
 700
 701         /* Constrain board-specific capabilities according to what
 702          * this driver and the chip itself can actually do.
 703          */
 704         c = &initdata->constraints;
 705         c->valid_modes_mask &= REGULATOR_MODE_NORMAL | REGULATOR_MODE_STANDBY;
 706         c->valid_ops_mask &= REGULATOR_CHANGE_VOLTAGE
 707                                 | REGULATOR_CHANGE_MODE
 708                                 | REGULATOR_CHANGE_STATUS;
 709
 710         switch (id) {
 711         case TWL6032_REG_SMPS3:
 712                 if (twl_get_smps_mult() & SMPS_MULTOFFSET_SMPS3)
 713                         info->flags |= SMPS_EXTENDED_EN;
 714                 if (twl_get_smps_offset() & SMPS_MULTOFFSET_SMPS3)
 715                         info->flags |= SMPS_OFFSET_EN;
 716                 break;
 717         case TWL6032_REG_SMPS4:
 718                 if (twl_get_smps_mult() & SMPS_MULTOFFSET_SMPS4)
 719                         info->flags |= SMPS_EXTENDED_EN;
 720                 if (twl_get_smps_offset() & SMPS_MULTOFFSET_SMPS4)
 721                         info->flags |= SMPS_OFFSET_EN;
 722                 break;
 723         case TWL6032_REG_VIO:
 724                 if (twl_get_smps_mult() & SMPS_MULTOFFSET_VIO)
 725                         info->flags |= SMPS_EXTENDED_EN;
 726                 if (twl_get_smps_offset() & SMPS_MULTOFFSET_VIO)
 727                         info->flags |= SMPS_OFFSET_EN;
 728                 break;
 729         }
 730
 731         if (of_property_read_bool(np, "ti,retain-on-reset"))
 732                 info->flags |= TWL_6030_WARM_RESET;
 733
 734         config.dev = &pdev->dev;
 735         config.init_data = initdata;
 736         config.driver_data = info;
 737         config.of_node = np;
 738
 739         rdev = devm_regulator_register(&pdev->dev, &info->desc, &config);
 740         if (IS_ERR(rdev)) {
 741                 dev_err(&pdev->dev, "can't register %s, %ld\n",
 742                                 info->desc.name, PTR_ERR(rdev));
 743                 return PTR_ERR(rdev);
 744         }
 745         platform_set_drvdata(pdev, rdev);
 746
 747         /* NOTE:  many regulators support short-circuit IRQs (presentable
 748          * as REGULATOR_OVER_CURRENT notifications?) configured via:
 749          *  - SC_CONFIG
 750          *  - SC_DETECT1 (vintana2, vmmc1/2, vaux1/2/3/4)
 751          *  - SC_DETECT2 (vusb, vdac, vio, vdd1/2, vpll2)
 752          *  - IT_CONFIG
 753          */
 754
 755         return 0;
 756 }
 757
 758 MODULE_ALIAS("platform:twl6030_reg");
 759
 760 static struct platform_driver twlreg_driver = {
 761         .probe          = twlreg_probe,
 762         /* NOTE: short name, to work around driver model truncation of
 763          * "twl_regulator.12" (and friends) to "twl_regulator.1".
 764          */
 765         .driver  = {
 766                 .name  = "twl6030_reg",
 767                 .probe_type = PROBE_PREFER_ASYNCHRONOUS,
 768                 .of_match_table = of_match_ptr(twl_of_match),
 769         },
 770 };
 771
 772 static int __init twlreg_init(void)
 773 {
 774         return platform_driver_register(&twlreg_driver);
 775 }
 776 subsys_initcall(twlreg_init);
 777
 778 static void __exit twlreg_exit(void)
 779 {
 780         platform_driver_unregister(&twlreg_driver);
 781 }
 782 module_exit(twlreg_exit)
 783
 784 MODULE_DESCRIPTION("TWL6030 regulator driver");
 785 MODULE_LICENSE("GPL");