drivers/regulator/twl6030-regulator.c

   1 /*
   2  * Split TWL6030 logic from twl-regulator.c:
   3  * Copyright (C) 2008 David Brownell
   4  *
   5  * Copyright (C) 2016 Nicolae Rosia <nicolae.rosia@gmail.com>
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License as published by
   9  * the Free Software Foundation; either version 2 of the License, or
  10  * (at your option) any later version.
  11  */
  12
  13 #include <linux/module.h>
  14 #include <linux/string.h>
  15 #include <linux/slab.h>
  16 #include <linux/init.h>
  17 #include <linux/err.h>
  18 #include <linux/platform_device.h>
  19 #include <linux/of.h>
  20 #include <linux/of_device.h>
  21 #include <linux/regulator/driver.h>
  22 #include <linux/regulator/machine.h>
  23 #include <linux/regulator/of_regulator.h>
  24 #include <linux/i2c/twl.h>
  25 #include <linux/delay.h>
  26
  27 struct twlreg_info {
  28         /* start of regulator's PM_RECEIVER control register bank */
  29         u8                      base;
  30
  31         /* twl resource ID, for resource control state machine */
  32         u8                      id;
  33
  34         /* chip constraints on regulator behavior */
  35         u16                     min_mV;
  36
  37         u8                      flags;
  38
  39         /* used by regulator core */
  40         struct regulator_desc   desc;
  41
  42         /* chip specific features */
  43         unsigned long           features;
  44
  45         /* data passed from board for external get/set voltage */
  46         void                    *data;
  47 };
  48
  49
  50 /* LDO control registers ... offset is from the base of its register bank.
  51  * The first three registers of all power resource banks help hardware to
  52  * manage the various resource groups.
  53  */
  54 /* Common offset in TWL4030/6030 */
  55 #define VREG_GRP                0
  56 /* TWL6030 register offsets */
  57 #define VREG_TRANS              1
  58 #define VREG_STATE              2
  59 #define VREG_VOLTAGE            3
  60 #define VREG_VOLTAGE_SMPS       4
  61 /* TWL6030 Misc register offsets */
  62 #define VREG_BC_ALL             1
  63 #define VREG_BC_REF             2
  64 #define VREG_BC_PROC            3
  65 #define VREG_BC_CLK_RST         4
  66
  67 /* TWL6030 LDO register values for CFG_STATE */
  68 #define TWL6030_CFG_STATE_OFF   0x00
  69 #define TWL6030_CFG_STATE_ON    0x01
  70 #define TWL6030_CFG_STATE_OFF2  0x02
  71 #define TWL6030_CFG_STATE_SLEEP 0x03
  72 #define TWL6030_CFG_STATE_GRP_SHIFT     5
  73 #define TWL6030_CFG_STATE_APP_SHIFT     2
  74 #define TWL6030_CFG_STATE_APP_MASK      (0x03 << TWL6030_CFG_STATE_APP_SHIFT)
  75 #define TWL6030_CFG_STATE_APP(v)        (((v) & TWL6030_CFG_STATE_APP_MASK) >>\
  76                                                 TWL6030_CFG_STATE_APP_SHIFT)
  77
  78 /* Flags for SMPS Voltage reading */
  79 #define SMPS_OFFSET_EN          BIT(0)
  80 #define SMPS_EXTENDED_EN        BIT(1)
  81
  82 /* twl6032 SMPS EPROM values */
  83 #define TWL6030_SMPS_OFFSET             0xB0
  84 #define TWL6030_SMPS_MULT               0xB3
  85 #define SMPS_MULTOFFSET_SMPS4   BIT(0)
  86 #define SMPS_MULTOFFSET_VIO     BIT(1)
  87 #define SMPS_MULTOFFSET_SMPS3   BIT(6)
  88
  89 static inline int
  90 twlreg_read(struct twlreg_info *info, unsigned slave_subgp, unsigned offset)
  91 {
  92         u8 value;
  93         int status;
  94
  95         status = twl_i2c_read_u8(slave_subgp,
  96                         &value, info->base + offset);
  97         return (status < 0) ? status : value;
  98 }
  99
 100 static inline int
 101 twlreg_write(struct twlreg_info *info, unsigned slave_subgp, unsigned offset,
 102                                                  u8 value)
 103 {
 104         return twl_i2c_write_u8(slave_subgp,
 105                         value, info->base + offset);
 106 }
 107
 108 /* generic power resource operations, which work on all regulators */
 109 static int twlreg_grp(struct regulator_dev *rdev)
 110 {
 111         return twlreg_read(rdev_get_drvdata(rdev), TWL_MODULE_PM_RECEIVER,
 112                                                                  VREG_GRP);
 113 }
 114
 115 /*
 116  * Enable/disable regulators by joining/leaving the P1 (processor) group.
 117  * We assume nobody else is updating the DEV_GRP registers.
 118  */
 119 /* definition for 6030 family */
 120 #define P3_GRP_6030     BIT(2)          /* secondary processor, modem, etc */
 121 #define P2_GRP_6030     BIT(1)          /* "peripherals" */
 122 #define P1_GRP_6030     BIT(0)          /* CPU/Linux */
 123
 124 static int twl6030reg_is_enabled(struct regulator_dev *rdev)
 125 {
 126         struct twlreg_info      *info = rdev_get_drvdata(rdev);
 127         int                     grp = 0, val;
 128
 129         if (!(twl_class_is_6030() && (info->features & TWL6032_SUBCLASS))) {
 130                 grp = twlreg_grp(rdev);
 131                 if (grp < 0)
 132                         return grp;
 133                 grp &= P1_GRP_6030;
 134         } else {
 135                 grp = 1;
 136         }
 137
 138         val = twlreg_read(info, TWL_MODULE_PM_RECEIVER, VREG_STATE);
 139         val = TWL6030_CFG_STATE_APP(val);
 140
 141         return grp && (val == TWL6030_CFG_STATE_ON);
 142 }
 143
 144 #define PB_I2C_BUSY     BIT(0)
 145 #define PB_I2C_BWEN     BIT(1)
 146
 147
 148 static int twl6030reg_enable(struct regulator_dev *rdev)
 149 {
 150         struct twlreg_info      *info = rdev_get_drvdata(rdev);
 151         int                     grp = 0;
 152         int                     ret;
 153
 154         if (!(twl_class_is_6030() && (info->features & TWL6032_SUBCLASS)))
 155                 grp = twlreg_grp(rdev);
 156         if (grp < 0)
 157                 return grp;
 158
 159         ret = twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_STATE,
 160                         grp << TWL6030_CFG_STATE_GRP_SHIFT |
 161                         TWL6030_CFG_STATE_ON);
 162         return ret;
 163 }
 164
 165 static int twl6030reg_disable(struct regulator_dev *rdev)
 166 {
 167         struct twlreg_info      *info = rdev_get_drvdata(rdev);
 168         int                     grp = 0;
 169         int                     ret;
 170
 171         if (!(twl_class_is_6030() && (info->features & TWL6032_SUBCLASS)))
 172                 grp = P1_GRP_6030 | P2_GRP_6030 | P3_GRP_6030;
 173
 174         /* For 6030, set the off state for all grps enabled */
 175         ret = twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_STATE,
 176                         (grp) << TWL6030_CFG_STATE_GRP_SHIFT |
 177                         TWL6030_CFG_STATE_OFF);
 178
 179         return ret;
 180 }
 181
 182 static int twl6030reg_get_status(struct regulator_dev *rdev)
 183 {
 184         struct twlreg_info      *info = rdev_get_drvdata(rdev);
 185         int                     val;
 186
 187         val = twlreg_grp(rdev);
 188         if (val < 0)
 189                 return val;
 190
 191         val = twlreg_read(info, TWL_MODULE_PM_RECEIVER, VREG_STATE);
 192
 193         switch (TWL6030_CFG_STATE_APP(val)) {
 194         case TWL6030_CFG_STATE_ON:
 195                 return REGULATOR_STATUS_NORMAL;
 196
 197         case TWL6030_CFG_STATE_SLEEP:
 198                 return REGULATOR_STATUS_STANDBY;
 199
 200         case TWL6030_CFG_STATE_OFF:
 201         case TWL6030_CFG_STATE_OFF2:
 202         default:
 203                 break;
 204         }
 205
 206         return REGULATOR_STATUS_OFF;
 207 }
 208
 209 static int twl6030reg_set_mode(struct regulator_dev *rdev, unsigned mode)
 210 {
 211         struct twlreg_info      *info = rdev_get_drvdata(rdev);
 212         int grp = 0;
 213         int val;
 214
 215         if (!(twl_class_is_6030() && (info->features & TWL6032_SUBCLASS)))
 216                 grp = twlreg_grp(rdev);
 217
 218         if (grp < 0)
 219                 return grp;
 220
 221         /* Compose the state register settings */
 222         val = grp << TWL6030_CFG_STATE_GRP_SHIFT;
 223         /* We can only set the mode through state machine commands... */
 224         switch (mode) {
 225         case REGULATOR_MODE_NORMAL:
 226                 val |= TWL6030_CFG_STATE_ON;
 227                 break;
 228         case REGULATOR_MODE_STANDBY:
 229                 val |= TWL6030_CFG_STATE_SLEEP;
 230                 break;
 231
 232         default:
 233                 return -EINVAL;
 234         }
 235
 236         return twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_STATE, val);
 237 }
 238
 239 static int twl6030coresmps_set_voltage(struct regulator_dev *rdev, int min_uV,
 240         int max_uV, unsigned *selector)
 241 {
 242         return -ENODEV;
 243 }
 244
 245 static int twl6030coresmps_get_voltage(struct regulator_dev *rdev)
 246 {
 247         return -ENODEV;
 248 }
 249
 250 static struct regulator_ops twl6030coresmps_ops = {
 251         .set_voltage    = twl6030coresmps_set_voltage,
 252         .get_voltage    = twl6030coresmps_get_voltage,
 253 };
 254
 255 static int twl6030ldo_list_voltage(struct regulator_dev *rdev, unsigned sel)
 256 {
 257         struct twlreg_info *info = rdev_get_drvdata(rdev);
 258
 259         switch (sel) {
 260         case 0:
 261                 return 0;
 262         case 1 ... 24:
 263                 /* Linear mapping from 00000001 to 00011000:
 264                  * Absolute voltage value = 1.0 V + 0.1 V × (sel – 00000001)
 265                  */
 266                 return (info->min_mV + 100 * (sel - 1)) * 1000;
 267         case 25 ... 30:
 268                 return -EINVAL;
 269         case 31:
 270                 return 2750000;
 271         default:
 272                 return -EINVAL;
 273         }
 274 }
 275
 276 static int
 277 twl6030ldo_set_voltage_sel(struct regulator_dev *rdev, unsigned selector)
 278 {
 279         struct twlreg_info      *info = rdev_get_drvdata(rdev);
 280
 281         return twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_VOLTAGE,
 282                             selector);
 283 }
 284
 285 static int twl6030ldo_get_voltage_sel(struct regulator_dev *rdev)
 286 {
 287         struct twlreg_info      *info = rdev_get_drvdata(rdev);
 288         int vsel = twlreg_read(info, TWL_MODULE_PM_RECEIVER, VREG_VOLTAGE);
 289
 290         return vsel;
 291 }
 292
 293 static struct regulator_ops twl6030ldo_ops = {
 294         .list_voltage   = twl6030ldo_list_voltage,
 295
 296         .set_voltage_sel = twl6030ldo_set_voltage_sel,
 297         .get_voltage_sel = twl6030ldo_get_voltage_sel,
 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 static struct regulator_ops twl6030fixed_ops = {
 309         .list_voltage   = regulator_list_voltage_linear,
 310
 311         .enable         = twl6030reg_enable,
 312         .disable        = twl6030reg_disable,
 313         .is_enabled     = twl6030reg_is_enabled,
 314
 315         .set_mode       = twl6030reg_set_mode,
 316
 317         .get_status     = twl6030reg_get_status,
 318 };
 319
 320 /*
 321  * SMPS status and control
 322  */
 323
 324 static int twl6030smps_list_voltage(struct regulator_dev *rdev, unsigned index)
 325 {
 326         struct twlreg_info      *info = rdev_get_drvdata(rdev);
 327
 328         int voltage = 0;
 329
 330         switch (info->flags) {
 331         case SMPS_OFFSET_EN:
 332                 voltage = 100000;
 333                 /* fall through */
 334         case 0:
 335                 switch (index) {
 336                 case 0:
 337                         voltage = 0;
 338                         break;
 339                 case 58:
 340                         voltage = 1350 * 1000;
 341                         break;
 342                 case 59:
 343                         voltage = 1500 * 1000;
 344                         break;
 345                 case 60:
 346                         voltage = 1800 * 1000;
 347                         break;
 348                 case 61:
 349                         voltage = 1900 * 1000;
 350                         break;
 351                 case 62:
 352                         voltage = 2100 * 1000;
 353                         break;
 354                 default:
 355                         voltage += (600000 + (12500 * (index - 1)));
 356                 }
 357                 break;
 358         case SMPS_EXTENDED_EN:
 359                 switch (index) {
 360                 case 0:
 361                         voltage = 0;
 362                         break;
 363                 case 58:
 364                         voltage = 2084 * 1000;
 365                         break;
 366                 case 59:
 367                         voltage = 2315 * 1000;
 368                         break;
 369                 case 60:
 370                         voltage = 2778 * 1000;
 371                         break;
 372                 case 61:
 373                         voltage = 2932 * 1000;
 374                         break;
 375                 case 62:
 376                         voltage = 3241 * 1000;
 377                         break;
 378                 default:
 379                         voltage = (1852000 + (38600 * (index - 1)));
 380                 }
 381                 break;
 382         case SMPS_OFFSET_EN | SMPS_EXTENDED_EN:
 383                 switch (index) {
 384                 case 0:
 385                         voltage = 0;
 386                         break;
 387                 case 58:
 388                         voltage = 4167 * 1000;
 389                         break;
 390                 case 59:
 391                         voltage = 2315 * 1000;
 392                         break;
 393                 case 60:
 394                         voltage = 2778 * 1000;
 395                         break;
 396                 case 61:
 397                         voltage = 2932 * 1000;
 398                         break;
 399                 case 62:
 400                         voltage = 3241 * 1000;
 401                         break;
 402                 default:
 403                         voltage = (2161000 + (38600 * (index - 1)));
 404                 }
 405                 break;
 406         }
 407
 408         return voltage;
 409 }
 410
 411 static int twl6030smps_map_voltage(struct regulator_dev *rdev, int min_uV,
 412                                    int max_uV)
 413 {
 414         struct twlreg_info *info = rdev_get_drvdata(rdev);
 415         int vsel = 0;
 416
 417         switch (info->flags) {
 418         case 0:
 419                 if (min_uV == 0)
 420                         vsel = 0;
 421                 else if ((min_uV >= 600000) && (min_uV <= 1300000)) {
 422                         vsel = DIV_ROUND_UP(min_uV - 600000, 12500);
 423                         vsel++;
 424                 }
 425                 /* Values 1..57 for vsel are linear and can be calculated
 426                  * values 58..62 are non linear.
 427                  */
 428                 else if ((min_uV > 1900000) && (min_uV <= 2100000))
 429                         vsel = 62;
 430                 else if ((min_uV > 1800000) && (min_uV <= 1900000))
 431                         vsel = 61;
 432                 else if ((min_uV > 1500000) && (min_uV <= 1800000))
 433                         vsel = 60;
 434                 else if ((min_uV > 1350000) && (min_uV <= 1500000))
 435                         vsel = 59;
 436                 else if ((min_uV > 1300000) && (min_uV <= 1350000))
 437                         vsel = 58;
 438                 else
 439                         return -EINVAL;
 440                 break;
 441         case SMPS_OFFSET_EN:
 442                 if (min_uV == 0)
 443                         vsel = 0;
 444                 else if ((min_uV >= 700000) && (min_uV <= 1420000)) {
 445                         vsel = DIV_ROUND_UP(min_uV - 700000, 12500);
 446                         vsel++;
 447                 }
 448                 /* Values 1..57 for vsel are linear and can be calculated
 449                  * values 58..62 are non linear.
 450                  */
 451                 else if ((min_uV > 1900000) && (min_uV <= 2100000))
 452                         vsel = 62;
 453                 else if ((min_uV > 1800000) && (min_uV <= 1900000))
 454                         vsel = 61;
 455                 else if ((min_uV > 1500000) && (min_uV <= 1800000))
 456                         vsel = 60;
 457                 else if ((min_uV > 1350000) && (min_uV <= 1500000))
 458                         vsel = 59;
 459                 else if ((min_uV > 1300000) && (min_uV <= 1350000))
 460                         vsel = 58;
 461                 else
 462                         return -EINVAL;
 463                 break;
 464         case SMPS_EXTENDED_EN:
 465                 if (min_uV == 0) {
 466                         vsel = 0;
 467                 } else if ((min_uV >= 1852000) && (max_uV <= 4013600)) {
 468                         vsel = DIV_ROUND_UP(min_uV - 1852000, 38600);
 469                         vsel++;
 470                 }
 471                 break;
 472         case SMPS_OFFSET_EN|SMPS_EXTENDED_EN:
 473                 if (min_uV == 0) {
 474                         vsel = 0;
 475                 } else if ((min_uV >= 2161000) && (min_uV <= 4321000)) {
 476                         vsel = DIV_ROUND_UP(min_uV - 2161000, 38600);
 477                         vsel++;
 478                 }
 479                 break;
 480         }
 481
 482         return vsel;
 483 }
 484
 485 static int twl6030smps_set_voltage_sel(struct regulator_dev *rdev,
 486                                        unsigned int selector)
 487 {
 488         struct twlreg_info *info = rdev_get_drvdata(rdev);
 489
 490         return twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_VOLTAGE_SMPS,
 491                             selector);
 492 }
 493
 494 static int twl6030smps_get_voltage_sel(struct regulator_dev *rdev)
 495 {
 496         struct twlreg_info      *info = rdev_get_drvdata(rdev);
 497
 498         return twlreg_read(info, TWL_MODULE_PM_RECEIVER, VREG_VOLTAGE_SMPS);
 499 }
 500
 501 static struct regulator_ops twlsmps_ops = {
 502         .list_voltage           = twl6030smps_list_voltage,
 503         .map_voltage            = twl6030smps_map_voltage,
 504
 505         .set_voltage_sel        = twl6030smps_set_voltage_sel,
 506         .get_voltage_sel        = twl6030smps_get_voltage_sel,
 507
 508         .enable                 = twl6030reg_enable,
 509         .disable                = twl6030reg_disable,
 510         .is_enabled             = twl6030reg_is_enabled,
 511
 512         .set_mode               = twl6030reg_set_mode,
 513
 514         .get_status             = twl6030reg_get_status,
 515 };
 516
 517 /*----------------------------------------------------------------------*/
 518
 519 #define TWL6030_ADJUSTABLE_SMPS(label) \
 520 static const struct twlreg_info TWL6030_INFO_##label = { \
 521         .desc = { \
 522                 .name = #label, \
 523                 .id = TWL6030_REG_##label, \
 524                 .ops = &twl6030coresmps_ops, \
 525                 .type = REGULATOR_VOLTAGE, \
 526                 .owner = THIS_MODULE, \
 527                 }, \
 528         }
 529
 530 #define TWL6030_ADJUSTABLE_LDO(label, offset, min_mVolts) \
 531 static const struct twlreg_info TWL6030_INFO_##label = { \
 532         .base = offset, \
 533         .min_mV = min_mVolts, \
 534         .desc = { \
 535                 .name = #label, \
 536                 .id = TWL6030_REG_##label, \
 537                 .n_voltages = 32, \
 538                 .ops = &twl6030ldo_ops, \
 539                 .type = REGULATOR_VOLTAGE, \
 540                 .owner = THIS_MODULE, \
 541                 }, \
 542         }
 543
 544 #define TWL6032_ADJUSTABLE_LDO(label, offset, min_mVolts) \
 545 static const struct twlreg_info TWL6032_INFO_##label = { \
 546         .base = offset, \
 547         .min_mV = min_mVolts, \
 548         .desc = { \
 549                 .name = #label, \
 550                 .id = TWL6032_REG_##label, \
 551                 .n_voltages = 32, \
 552                 .ops = &twl6030ldo_ops, \
 553                 .type = REGULATOR_VOLTAGE, \
 554                 .owner = THIS_MODULE, \
 555                 }, \
 556         }
 557
 558 #define TWL6030_FIXED_LDO(label, offset, mVolts, turnon_delay) \
 559 static const struct twlreg_info TWLFIXED_INFO_##label = { \
 560         .base = offset, \
 561         .id = 0, \
 562         .min_mV = mVolts, \
 563         .desc = { \
 564                 .name = #label, \
 565                 .id = TWL6030##_REG_##label, \
 566                 .n_voltages = 1, \
 567                 .ops = &twl6030fixed_ops, \
 568                 .type = REGULATOR_VOLTAGE, \
 569                 .owner = THIS_MODULE, \
 570                 .min_uV = mVolts * 1000, \
 571                 .enable_time = turnon_delay, \
 572                 .of_map_mode = NULL, \
 573                 }, \
 574         }
 575
 576 #define TWL6032_ADJUSTABLE_SMPS(label, offset) \
 577 static const struct twlreg_info TWLSMPS_INFO_##label = { \
 578         .base = offset, \
 579         .min_mV = 600, \
 580         .desc = { \
 581                 .name = #label, \
 582                 .id = TWL6032_REG_##label, \
 583                 .n_voltages = 63, \
 584                 .ops = &twlsmps_ops, \
 585                 .type = REGULATOR_VOLTAGE, \
 586                 .owner = THIS_MODULE, \
 587                 }, \
 588         }
 589
 590 /* VUSBCP is managed *only* by the USB subchip */
 591 /* 6030 REG with base as PMC Slave Misc : 0x0030 */
 592 /* Turnon-delay and remap configuration values for 6030 are not
 593    verified since the specification is not public */
 594 TWL6030_ADJUSTABLE_SMPS(VDD1);
 595 TWL6030_ADJUSTABLE_SMPS(VDD2);
 596 TWL6030_ADJUSTABLE_SMPS(VDD3);
 597 TWL6030_ADJUSTABLE_LDO(VAUX1_6030, 0x54, 1000);
 598 TWL6030_ADJUSTABLE_LDO(VAUX2_6030, 0x58, 1000);
 599 TWL6030_ADJUSTABLE_LDO(VAUX3_6030, 0x5c, 1000);
 600 TWL6030_ADJUSTABLE_LDO(VMMC, 0x68, 1000);
 601 TWL6030_ADJUSTABLE_LDO(VPP, 0x6c, 1000);
 602 TWL6030_ADJUSTABLE_LDO(VUSIM, 0x74, 1000);
 603 /* 6025 are renamed compared to 6030 versions */
 604 TWL6032_ADJUSTABLE_LDO(LDO2, 0x54, 1000);
 605 TWL6032_ADJUSTABLE_LDO(LDO4, 0x58, 1000);
 606 TWL6032_ADJUSTABLE_LDO(LDO3, 0x5c, 1000);
 607 TWL6032_ADJUSTABLE_LDO(LDO5, 0x68, 1000);
 608 TWL6032_ADJUSTABLE_LDO(LDO1, 0x6c, 1000);
 609 TWL6032_ADJUSTABLE_LDO(LDO7, 0x74, 1000);
 610 TWL6032_ADJUSTABLE_LDO(LDO6, 0x60, 1000);
 611 TWL6032_ADJUSTABLE_LDO(LDOLN, 0x64, 1000);
 612 TWL6032_ADJUSTABLE_LDO(LDOUSB, 0x70, 1000);
 613 TWL6030_FIXED_LDO(VANA, 0x50, 2100, 0);
 614 TWL6030_FIXED_LDO(VCXIO, 0x60, 1800, 0);
 615 TWL6030_FIXED_LDO(VDAC, 0x64, 1800, 0);
 616 TWL6030_FIXED_LDO(VUSB, 0x70, 3300, 0);
 617 TWL6030_FIXED_LDO(V1V8, 0x16, 1800, 0);
 618 TWL6030_FIXED_LDO(V2V1, 0x1c, 2100, 0);
 619 TWL6032_ADJUSTABLE_SMPS(SMPS3, 0x34);
 620 TWL6032_ADJUSTABLE_SMPS(SMPS4, 0x10);
 621 TWL6032_ADJUSTABLE_SMPS(VIO, 0x16);
 622
 623 static u8 twl_get_smps_offset(void)
 624 {
 625         u8 value;
 626
 627         twl_i2c_read_u8(TWL_MODULE_PM_RECEIVER, &value,
 628                         TWL6030_SMPS_OFFSET);
 629         return value;
 630 }
 631
 632 static u8 twl_get_smps_mult(void)
 633 {
 634         u8 value;
 635
 636         twl_i2c_read_u8(TWL_MODULE_PM_RECEIVER, &value,
 637                         TWL6030_SMPS_MULT);
 638         return value;
 639 }
 640
 641 #define TWL_OF_MATCH(comp, family, label) \
 642         { \
 643                 .compatible = comp, \
 644                 .data = &family##_INFO_##label, \
 645         }
 646
 647 #define TWL6030_OF_MATCH(comp, label) TWL_OF_MATCH(comp, TWL6030, label)
 648 #define TWL6032_OF_MATCH(comp, label) TWL_OF_MATCH(comp, TWL6032, label)
 649 #define TWLFIXED_OF_MATCH(comp, label) TWL_OF_MATCH(comp, TWLFIXED, label)
 650 #define TWLSMPS_OF_MATCH(comp, label) TWL_OF_MATCH(comp, TWLSMPS, label)
 651
 652 static const struct of_device_id twl_of_match[] = {
 653         TWL6030_OF_MATCH("ti,twl6030-vdd1", VDD1),
 654         TWL6030_OF_MATCH("ti,twl6030-vdd2", VDD2),
 655         TWL6030_OF_MATCH("ti,twl6030-vdd3", VDD3),
 656         TWL6030_OF_MATCH("ti,twl6030-vaux1", VAUX1_6030),
 657         TWL6030_OF_MATCH("ti,twl6030-vaux2", VAUX2_6030),
 658         TWL6030_OF_MATCH("ti,twl6030-vaux3", VAUX3_6030),
 659         TWL6030_OF_MATCH("ti,twl6030-vmmc", VMMC),
 660         TWL6030_OF_MATCH("ti,twl6030-vpp", VPP),
 661         TWL6030_OF_MATCH("ti,twl6030-vusim", VUSIM),
 662         TWL6032_OF_MATCH("ti,twl6032-ldo2", LDO2),
 663         TWL6032_OF_MATCH("ti,twl6032-ldo4", LDO4),
 664         TWL6032_OF_MATCH("ti,twl6032-ldo3", LDO3),
 665         TWL6032_OF_MATCH("ti,twl6032-ldo5", LDO5),
 666         TWL6032_OF_MATCH("ti,twl6032-ldo1", LDO1),
 667         TWL6032_OF_MATCH("ti,twl6032-ldo7", LDO7),
 668         TWL6032_OF_MATCH("ti,twl6032-ldo6", LDO6),
 669         TWL6032_OF_MATCH("ti,twl6032-ldoln", LDOLN),
 670         TWL6032_OF_MATCH("ti,twl6032-ldousb", LDOUSB),
 671         TWLFIXED_OF_MATCH("ti,twl6030-vana", VANA),
 672         TWLFIXED_OF_MATCH("ti,twl6030-vcxio", VCXIO),
 673         TWLFIXED_OF_MATCH("ti,twl6030-vdac", VDAC),
 674         TWLFIXED_OF_MATCH("ti,twl6030-vusb", VUSB),
 675         TWLFIXED_OF_MATCH("ti,twl6030-v1v8", V1V8),
 676         TWLFIXED_OF_MATCH("ti,twl6030-v2v1", V2V1),
 677         TWLSMPS_OF_MATCH("ti,twl6032-smps3", SMPS3),
 678         TWLSMPS_OF_MATCH("ti,twl6032-smps4", SMPS4),
 679         TWLSMPS_OF_MATCH("ti,twl6032-vio", VIO),
 680         {},
 681 };
 682 MODULE_DEVICE_TABLE(of, twl_of_match);
 683
 684 static int twlreg_probe(struct platform_device *pdev)
 685 {
 686         int id;
 687         struct twlreg_info              *info;
 688         const struct twlreg_info        *template;
 689         struct regulator_init_data      *initdata;
 690         struct regulation_constraints   *c;
 691         struct regulator_dev            *rdev;
 692         const struct of_device_id       *match;
 693         struct regulator_config         config = { };
 694
 695         match = of_match_device(twl_of_match, &pdev->dev);
 696         if (!match)
 697                 return -ENODEV;
 698
 699         template = match->data;
 700         if (!template)
 701                 return -ENODEV;
 702
 703         id = template->desc.id;
 704         initdata = of_get_regulator_init_data(&pdev->dev, pdev->dev.of_node,
 705                                                 &template->desc);
 706         if (!initdata)
 707                 return -EINVAL;
 708
 709         info = devm_kmemdup(&pdev->dev, template, sizeof(*info), GFP_KERNEL);
 710         if (!info)
 711                 return -ENOMEM;
 712
 713         /* Constrain board-specific capabilities according to what
 714          * this driver and the chip itself can actually do.
 715          */
 716         c = &initdata->constraints;
 717         c->valid_modes_mask &= REGULATOR_MODE_NORMAL | REGULATOR_MODE_STANDBY;
 718         c->valid_ops_mask &= REGULATOR_CHANGE_VOLTAGE
 719                                 | REGULATOR_CHANGE_MODE
 720                                 | REGULATOR_CHANGE_STATUS;
 721
 722         switch (id) {
 723         case TWL6032_REG_SMPS3:
 724                 if (twl_get_smps_mult() & SMPS_MULTOFFSET_SMPS3)
 725                         info->flags |= SMPS_EXTENDED_EN;
 726                 if (twl_get_smps_offset() & SMPS_MULTOFFSET_SMPS3)
 727                         info->flags |= SMPS_OFFSET_EN;
 728                 break;
 729         case TWL6032_REG_SMPS4:
 730                 if (twl_get_smps_mult() & SMPS_MULTOFFSET_SMPS4)
 731                         info->flags |= SMPS_EXTENDED_EN;
 732                 if (twl_get_smps_offset() & SMPS_MULTOFFSET_SMPS4)
 733                         info->flags |= SMPS_OFFSET_EN;
 734                 break;
 735         case TWL6032_REG_VIO:
 736                 if (twl_get_smps_mult() & SMPS_MULTOFFSET_VIO)
 737                         info->flags |= SMPS_EXTENDED_EN;
 738                 if (twl_get_smps_offset() & SMPS_MULTOFFSET_VIO)
 739                         info->flags |= SMPS_OFFSET_EN;
 740                 break;
 741         }
 742
 743         config.dev = &pdev->dev;
 744         config.init_data = initdata;
 745         config.driver_data = info;
 746         config.of_node = pdev->dev.of_node;
 747
 748         rdev = devm_regulator_register(&pdev->dev, &info->desc, &config);
 749         if (IS_ERR(rdev)) {
 750                 dev_err(&pdev->dev, "can't register %s, %ld\n",
 751                                 info->desc.name, PTR_ERR(rdev));
 752                 return PTR_ERR(rdev);
 753         }
 754         platform_set_drvdata(pdev, rdev);
 755
 756         /* NOTE:  many regulators support short-circuit IRQs (presentable
 757          * as REGULATOR_OVER_CURRENT notifications?) configured via:
 758          *  - SC_CONFIG
 759          *  - SC_DETECT1 (vintana2, vmmc1/2, vaux1/2/3/4)
 760          *  - SC_DETECT2 (vusb, vdac, vio, vdd1/2, vpll2)
 761          *  - IT_CONFIG
 762          */
 763
 764         return 0;
 765 }
 766
 767 MODULE_ALIAS("platform:twl6030_reg");
 768
 769 static struct platform_driver twlreg_driver = {
 770         .probe          = twlreg_probe,
 771         /* NOTE: short name, to work around driver model truncation of
 772          * "twl_regulator.12" (and friends) to "twl_regulator.1".
 773          */
 774         .driver  = {
 775                 .name  = "twl6030_reg",
 776                 .of_match_table = of_match_ptr(twl_of_match),
 777         },
 778 };
 779
 780 static int __init twlreg_init(void)
 781 {
 782         return platform_driver_register(&twlreg_driver);
 783 }
 784 subsys_initcall(twlreg_init);
 785
 786 static void __exit twlreg_exit(void)
 787 {
 788         platform_driver_unregister(&twlreg_driver);
 789 }
 790 module_exit(twlreg_exit)
 791
 792 MODULE_DESCRIPTION("TWL6030 regulator driver");
 793 MODULE_LICENSE("GPL");