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