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