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1// SPDX-License-Identifier: GPL-2.0+2//3// Regulator driver for DA9063 PMIC series4//5// Copyright 2012 Dialog Semiconductors Ltd.6// Copyright 2013 Philipp Zabel, Pengutronix7//8// Author: Krystian Garbaciak <krystian.garbaciak@diasemi.com>9 10#include <linux/kernel.h>11#include <linux/module.h>12#include <linux/init.h>13#include <linux/err.h>14#include <linux/slab.h>15#include <linux/of.h>16#include <linux/platform_device.h>17#include <linux/regmap.h>18#include <linux/regulator/driver.h>19#include <linux/regulator/machine.h>20#include <linux/regulator/of_regulator.h>21#include <linux/mfd/da9063/core.h>22#include <linux/mfd/da9063/registers.h>23 24 25/* Definition for registering regmap bit fields using a mask */26#define BFIELD(_reg, _mask) \27 REG_FIELD(_reg, __builtin_ffs((int)_mask) - 1, \28 sizeof(unsigned int) * 8 - __builtin_clz((_mask)) - 1)29 30/* DA9063 and DA9063L regulator IDs */31enum {32 /* BUCKs */33 DA9063_ID_BCORE1,34 DA9063_ID_BCORE2,35 DA9063_ID_BPRO,36 DA9063_ID_BMEM,37 DA9063_ID_BIO,38 DA9063_ID_BPERI,39 40 /* BCORE1 and BCORE2 in merged mode */41 DA9063_ID_BCORES_MERGED,42 /* BMEM and BIO in merged mode */43 DA9063_ID_BMEM_BIO_MERGED,44 /* When two BUCKs are merged, they cannot be reused separately */45 46 /* LDOs on both DA9063 and DA9063L */47 DA9063_ID_LDO3,48 DA9063_ID_LDO7,49 DA9063_ID_LDO8,50 DA9063_ID_LDO9,51 DA9063_ID_LDO11,52 53 /* DA9063-only LDOs */54 DA9063_ID_LDO1,55 DA9063_ID_LDO2,56 DA9063_ID_LDO4,57 DA9063_ID_LDO5,58 DA9063_ID_LDO6,59 DA9063_ID_LDO10,60};61 62/* Old regulator platform data */63struct da9063_regulator_data {64 int id;65 struct regulator_init_data *initdata;66};67 68struct da9063_regulators_pdata {69 unsigned int n_regulators;70 struct da9063_regulator_data *regulator_data;71};72 73/* Regulator capabilities and registers description */74struct da9063_regulator_info {75 struct regulator_desc desc;76 77 /* DA9063 main register fields */78 struct reg_field mode; /* buck mode of operation */79 struct reg_field suspend;80 struct reg_field sleep;81 struct reg_field suspend_sleep;82 unsigned int suspend_vsel_reg;83 84 /* DA9063 event detection bit */85 struct reg_field oc_event;86 87 /* DA9063 voltage monitor bit */88 struct reg_field vmon;89};90 91/* Macros for LDO */92#define DA9063_LDO(chip, regl_name, min_mV, step_mV, max_mV) \93 .desc.id = chip##_ID_##regl_name, \94 .desc.name = __stringify(chip##_##regl_name), \95 .desc.ops = &da9063_ldo_ops, \96 .desc.min_uV = (min_mV) * 1000, \97 .desc.uV_step = (step_mV) * 1000, \98 .desc.n_voltages = (((max_mV) - (min_mV))/(step_mV) + 1 \99 + (DA9063_V##regl_name##_BIAS)), \100 .desc.enable_reg = DA9063_REG_##regl_name##_CONT, \101 .desc.enable_mask = DA9063_LDO_EN, \102 .desc.vsel_reg = DA9063_REG_V##regl_name##_A, \103 .desc.vsel_mask = DA9063_V##regl_name##_MASK, \104 .desc.linear_min_sel = DA9063_V##regl_name##_BIAS, \105 .sleep = BFIELD(DA9063_REG_V##regl_name##_A, DA9063_LDO_SL), \106 .suspend = BFIELD(DA9063_REG_##regl_name##_CONT, DA9063_LDO_CONF), \107 .suspend_sleep = BFIELD(DA9063_REG_V##regl_name##_B, DA9063_LDO_SL), \108 .suspend_vsel_reg = DA9063_REG_V##regl_name##_B109 110/* Macros for voltage DC/DC converters (BUCKs) */111#define DA9063_BUCK(chip, regl_name, min_mV, step_mV, max_mV, limits_array, \112 creg, cmask) \113 .desc.id = chip##_ID_##regl_name, \114 .desc.name = __stringify(chip##_##regl_name), \115 .desc.ops = &da9063_buck_ops, \116 .desc.min_uV = (min_mV) * 1000, \117 .desc.uV_step = (step_mV) * 1000, \118 .desc.n_voltages = ((max_mV) - (min_mV))/(step_mV) + 1, \119 .desc.csel_reg = (creg), \120 .desc.csel_mask = (cmask), \121 .desc.curr_table = limits_array, \122 .desc.n_current_limits = ARRAY_SIZE(limits_array)123 124#define DA9063_BUCK_COMMON_FIELDS(regl_name) \125 .desc.enable_reg = DA9063_REG_##regl_name##_CONT, \126 .desc.enable_mask = DA9063_BUCK_EN, \127 .desc.vsel_reg = DA9063_REG_V##regl_name##_A, \128 .desc.vsel_mask = DA9063_VBUCK_MASK, \129 .desc.linear_min_sel = DA9063_VBUCK_BIAS, \130 .sleep = BFIELD(DA9063_REG_V##regl_name##_A, DA9063_BUCK_SL), \131 .suspend = BFIELD(DA9063_REG_##regl_name##_CONT, DA9063_BUCK_CONF), \132 .suspend_sleep = BFIELD(DA9063_REG_V##regl_name##_B, DA9063_BUCK_SL), \133 .suspend_vsel_reg = DA9063_REG_V##regl_name##_B, \134 .mode = BFIELD(DA9063_REG_##regl_name##_CFG, DA9063_BUCK_MODE_MASK)135 136/* Defines assignment of regulators info table to chip model */137struct da9063_dev_model {138 const struct da9063_regulator_info *regulator_info;139 unsigned int n_regulators;140 enum da9063_type type;141};142 143/* Single regulator settings */144struct da9063_regulator {145 struct regulator_desc desc;146 struct regulator_dev *rdev;147 struct da9063 *hw;148 const struct da9063_regulator_info *info;149 150 struct regmap_field *mode;151 struct regmap_field *suspend;152 struct regmap_field *sleep;153 struct regmap_field *suspend_sleep;154 struct regmap_field *vmon;155};156 157/* Encapsulates all information for the regulators driver */158struct da9063_regulators {159 unsigned int n_regulators;160 /* Array size to be defined during init. Keep at end. */161 struct da9063_regulator regulator[] __counted_by(n_regulators);162};163 164/* BUCK modes for DA9063 */165enum {166 BUCK_MODE_MANUAL, /* 0 */167 BUCK_MODE_SLEEP, /* 1 */168 BUCK_MODE_SYNC, /* 2 */169 BUCK_MODE_AUTO /* 3 */170};171 172/* Regulator operations */173 174/*175 * Current limits array (in uA) for BCORE1, BCORE2, BPRO.176 * Entry indexes corresponds to register values.177 */178static const unsigned int da9063_buck_a_limits[] = {179 500000, 600000, 700000, 800000, 900000, 1000000, 1100000, 1200000,180 1300000, 1400000, 1500000, 1600000, 1700000, 1800000, 1900000, 2000000181};182 183/*184 * Current limits array (in uA) for BMEM, BIO, BPERI.185 * Entry indexes corresponds to register values.186 */187static const unsigned int da9063_buck_b_limits[] = {188 1500000, 1600000, 1700000, 1800000, 1900000, 2000000, 2100000, 2200000,189 2300000, 2400000, 2500000, 2600000, 2700000, 2800000, 2900000, 3000000190};191 192/*193 * Current limits array (in uA) for merged BCORE1 and BCORE2.194 * Entry indexes corresponds to register values.195 */196static const unsigned int da9063_bcores_merged_limits[] = {197 1000000, 1200000, 1400000, 1600000, 1800000, 2000000, 2200000, 2400000,198 2600000, 2800000, 3000000, 3200000, 3400000, 3600000, 3800000, 4000000199};200 201/*202 * Current limits array (in uA) for merged BMEM and BIO.203 * Entry indexes corresponds to register values.204 */205static const unsigned int da9063_bmem_bio_merged_limits[] = {206 3000000, 3200000, 3400000, 3600000, 3800000, 4000000, 4200000, 4400000,207 4600000, 4800000, 5000000, 5200000, 5400000, 5600000, 5800000, 6000000208};209 210static int da9063_set_xvp(struct regulator_dev *rdev, int lim_uV, int severity, bool enable)211{212 struct da9063_regulator *regl = rdev_get_drvdata(rdev);213 struct device *dev = regl->hw->dev;214 215 dev_dbg(dev, "%s: lim: %d, sev: %d, en: %d\n", regl->desc.name, lim_uV, severity, enable);216 217 /*218 * only support enable and disable.219 * the da9063 offers a GPIO (GP_FB2) which is unasserted if an XV happens.220 * therefore ignore severity here, as there might be handlers in hardware.221 */222 if (lim_uV)223 return -EINVAL;224 225 return regmap_field_write(regl->vmon, enable ? 1 : 0);226}227 228static int da9063_buck_set_mode(struct regulator_dev *rdev, unsigned int mode)229{230 struct da9063_regulator *regl = rdev_get_drvdata(rdev);231 unsigned int val;232 233 switch (mode) {234 case REGULATOR_MODE_FAST:235 val = BUCK_MODE_SYNC;236 break;237 case REGULATOR_MODE_NORMAL:238 val = BUCK_MODE_AUTO;239 break;240 case REGULATOR_MODE_STANDBY:241 val = BUCK_MODE_SLEEP;242 break;243 default:244 return -EINVAL;245 }246 247 return regmap_field_write(regl->mode, val);248}249 250/*251 * Bucks use single mode register field for normal operation252 * and suspend state.253 * There are 3 modes to map to: FAST, NORMAL, and STANDBY.254 */255 256static unsigned int da9063_buck_get_mode(struct regulator_dev *rdev)257{258 struct da9063_regulator *regl = rdev_get_drvdata(rdev);259 unsigned int val;260 int ret;261 262 ret = regmap_field_read(regl->mode, &val);263 if (ret < 0)264 return ret;265 266 switch (val) {267 default:268 case BUCK_MODE_MANUAL:269 /* Sleep flag bit decides the mode */270 break;271 case BUCK_MODE_SLEEP:272 return REGULATOR_MODE_STANDBY;273 case BUCK_MODE_SYNC:274 return REGULATOR_MODE_FAST;275 case BUCK_MODE_AUTO:276 return REGULATOR_MODE_NORMAL;277 }278 279 ret = regmap_field_read(regl->sleep, &val);280 if (ret < 0)281 return 0;282 283 if (val)284 return REGULATOR_MODE_STANDBY;285 else286 return REGULATOR_MODE_FAST;287}288 289/*290 * LDOs use sleep flags - one for normal and one for suspend state.291 * There are 2 modes to map to: NORMAL and STANDBY (sleep) for each state.292 */293 294static int da9063_ldo_set_mode(struct regulator_dev *rdev, unsigned int mode)295{296 struct da9063_regulator *regl = rdev_get_drvdata(rdev);297 unsigned int val;298 299 switch (mode) {300 case REGULATOR_MODE_NORMAL:301 val = 0;302 break;303 case REGULATOR_MODE_STANDBY:304 val = 1;305 break;306 default:307 return -EINVAL;308 }309 310 return regmap_field_write(regl->sleep, val);311}312 313static unsigned int da9063_ldo_get_mode(struct regulator_dev *rdev)314{315 struct da9063_regulator *regl = rdev_get_drvdata(rdev);316 int ret, val;317 318 ret = regmap_field_read(regl->sleep, &val);319 if (ret < 0)320 return 0;321 322 if (val)323 return REGULATOR_MODE_STANDBY;324 else325 return REGULATOR_MODE_NORMAL;326}327 328static int da9063_buck_get_status(struct regulator_dev *rdev)329{330 int ret = regulator_is_enabled_regmap(rdev);331 332 if (ret == 0) {333 ret = REGULATOR_STATUS_OFF;334 } else if (ret > 0) {335 ret = da9063_buck_get_mode(rdev);336 if (ret > 0)337 ret = regulator_mode_to_status(ret);338 else if (ret == 0)339 ret = -EIO;340 }341 342 return ret;343}344 345static int da9063_ldo_get_status(struct regulator_dev *rdev)346{347 int ret = regulator_is_enabled_regmap(rdev);348 349 if (ret == 0) {350 ret = REGULATOR_STATUS_OFF;351 } else if (ret > 0) {352 ret = da9063_ldo_get_mode(rdev);353 if (ret > 0)354 ret = regulator_mode_to_status(ret);355 else if (ret == 0)356 ret = -EIO;357 }358 359 return ret;360}361 362static int da9063_set_suspend_voltage(struct regulator_dev *rdev, int uV)363{364 struct da9063_regulator *regl = rdev_get_drvdata(rdev);365 const struct da9063_regulator_info *rinfo = regl->info;366 int ret, sel;367 368 sel = regulator_map_voltage_linear(rdev, uV, uV);369 if (sel < 0)370 return sel;371 372 sel <<= ffs(rdev->desc->vsel_mask) - 1;373 374 ret = regmap_update_bits(regl->hw->regmap, rinfo->suspend_vsel_reg,375 rdev->desc->vsel_mask, sel);376 377 return ret;378}379 380static int da9063_suspend_enable(struct regulator_dev *rdev)381{382 struct da9063_regulator *regl = rdev_get_drvdata(rdev);383 384 return regmap_field_write(regl->suspend, 1);385}386 387static int da9063_suspend_disable(struct regulator_dev *rdev)388{389 struct da9063_regulator *regl = rdev_get_drvdata(rdev);390 391 return regmap_field_write(regl->suspend, 0);392}393 394static int da9063_buck_set_suspend_mode(struct regulator_dev *rdev,395 unsigned int mode)396{397 struct da9063_regulator *regl = rdev_get_drvdata(rdev);398 int val;399 400 switch (mode) {401 case REGULATOR_MODE_FAST:402 val = BUCK_MODE_SYNC;403 break;404 case REGULATOR_MODE_NORMAL:405 val = BUCK_MODE_AUTO;406 break;407 case REGULATOR_MODE_STANDBY:408 val = BUCK_MODE_SLEEP;409 break;410 default:411 return -EINVAL;412 }413 414 return regmap_field_write(regl->mode, val);415}416 417static int da9063_ldo_set_suspend_mode(struct regulator_dev *rdev,418 unsigned int mode)419{420 struct da9063_regulator *regl = rdev_get_drvdata(rdev);421 unsigned int val;422 423 switch (mode) {424 case REGULATOR_MODE_NORMAL:425 val = 0;426 break;427 case REGULATOR_MODE_STANDBY:428 val = 1;429 break;430 default:431 return -EINVAL;432 }433 434 return regmap_field_write(regl->suspend_sleep, val);435}436 437static unsigned int da9063_get_overdrive_mask(const struct regulator_desc *desc)438{439 switch (desc->id) {440 case DA9063_ID_BCORES_MERGED:441 case DA9063_ID_BCORE1:442 return DA9063_BCORE1_OD;443 case DA9063_ID_BCORE2:444 return DA9063_BCORE2_OD;445 case DA9063_ID_BPRO:446 return DA9063_BPRO_OD;447 default:448 return 0;449 }450}451 452static int da9063_buck_set_limit_set_overdrive(struct regulator_dev *rdev,453 int min_uA, int max_uA,454 unsigned int overdrive_mask)455{456 /*457 * When enabling overdrive, do it before changing the current limit to458 * ensure sufficient supply throughout the switch.459 */460 struct da9063_regulator *regl = rdev_get_drvdata(rdev);461 int ret;462 unsigned int orig_overdrive;463 464 ret = regmap_read(regl->hw->regmap, DA9063_REG_CONFIG_H,465 &orig_overdrive);466 if (ret < 0)467 return ret;468 orig_overdrive &= overdrive_mask;469 470 if (orig_overdrive == 0) {471 ret = regmap_set_bits(regl->hw->regmap, DA9063_REG_CONFIG_H,472 overdrive_mask);473 if (ret < 0)474 return ret;475 }476 477 ret = regulator_set_current_limit_regmap(rdev, min_uA / 2, max_uA / 2);478 if (ret < 0 && orig_overdrive == 0)479 /*480 * regulator_set_current_limit_regmap may have rejected the481 * change because of unusable min_uA and/or max_uA inputs.482 * Attempt to restore original overdrive state, ignore failure-483 * on-failure.484 */485 regmap_clear_bits(regl->hw->regmap, DA9063_REG_CONFIG_H,486 overdrive_mask);487 488 return ret;489}490 491static int da9063_buck_set_limit_clear_overdrive(struct regulator_dev *rdev,492 int min_uA, int max_uA,493 unsigned int overdrive_mask)494{495 /*496 * When disabling overdrive, do it after changing the current limit to497 * ensure sufficient supply throughout the switch.498 */499 struct da9063_regulator *regl = rdev_get_drvdata(rdev);500 int ret, orig_limit;501 502 ret = regmap_read(rdev->regmap, rdev->desc->csel_reg, &orig_limit);503 if (ret < 0)504 return ret;505 506 ret = regulator_set_current_limit_regmap(rdev, min_uA, max_uA);507 if (ret < 0)508 return ret;509 510 ret = regmap_clear_bits(regl->hw->regmap, DA9063_REG_CONFIG_H,511 overdrive_mask);512 if (ret < 0)513 /*514 * Attempt to restore original current limit, ignore failure-515 * on-failure.516 */517 regmap_write(rdev->regmap, rdev->desc->csel_reg, orig_limit);518 519 return ret;520}521 522static int da9063_buck_set_current_limit(struct regulator_dev *rdev,523 int min_uA, int max_uA)524{525 unsigned int overdrive_mask, n_currents;526 527 overdrive_mask = da9063_get_overdrive_mask(rdev->desc);528 if (overdrive_mask) {529 n_currents = rdev->desc->n_current_limits;530 if (n_currents == 0)531 return -EINVAL;532 533 if (max_uA > rdev->desc->curr_table[n_currents - 1])534 return da9063_buck_set_limit_set_overdrive(rdev, min_uA,535 max_uA,536 overdrive_mask);537 538 return da9063_buck_set_limit_clear_overdrive(rdev, min_uA,539 max_uA,540 overdrive_mask);541 }542 return regulator_set_current_limit_regmap(rdev, min_uA, max_uA);543}544 545static int da9063_buck_get_current_limit(struct regulator_dev *rdev)546{547 struct da9063_regulator *regl = rdev_get_drvdata(rdev);548 int val, ret, limit;549 unsigned int mask;550 551 limit = regulator_get_current_limit_regmap(rdev);552 if (limit < 0)553 return limit;554 mask = da9063_get_overdrive_mask(rdev->desc);555 if (mask) {556 ret = regmap_read(regl->hw->regmap, DA9063_REG_CONFIG_H, &val);557 if (ret < 0)558 return ret;559 if (val & mask)560 limit *= 2;561 }562 return limit;563}564 565static const struct regulator_ops da9063_buck_ops = {566 .enable = regulator_enable_regmap,567 .disable = regulator_disable_regmap,568 .is_enabled = regulator_is_enabled_regmap,569 .get_voltage_sel = regulator_get_voltage_sel_regmap,570 .set_voltage_sel = regulator_set_voltage_sel_regmap,571 .list_voltage = regulator_list_voltage_linear,572 .set_current_limit = da9063_buck_set_current_limit,573 .get_current_limit = da9063_buck_get_current_limit,574 .set_mode = da9063_buck_set_mode,575 .get_mode = da9063_buck_get_mode,576 .get_status = da9063_buck_get_status,577 .set_suspend_voltage = da9063_set_suspend_voltage,578 .set_suspend_enable = da9063_suspend_enable,579 .set_suspend_disable = da9063_suspend_disable,580 .set_suspend_mode = da9063_buck_set_suspend_mode,581 .set_over_voltage_protection = da9063_set_xvp,582 .set_under_voltage_protection = da9063_set_xvp,583};584 585static const struct regulator_ops da9063_ldo_ops = {586 .enable = regulator_enable_regmap,587 .disable = regulator_disable_regmap,588 .is_enabled = regulator_is_enabled_regmap,589 .get_voltage_sel = regulator_get_voltage_sel_regmap,590 .set_voltage_sel = regulator_set_voltage_sel_regmap,591 .list_voltage = regulator_list_voltage_linear,592 .set_mode = da9063_ldo_set_mode,593 .get_mode = da9063_ldo_get_mode,594 .get_status = da9063_ldo_get_status,595 .set_suspend_voltage = da9063_set_suspend_voltage,596 .set_suspend_enable = da9063_suspend_enable,597 .set_suspend_disable = da9063_suspend_disable,598 .set_suspend_mode = da9063_ldo_set_suspend_mode,599 .set_over_voltage_protection = da9063_set_xvp,600 .set_under_voltage_protection = da9063_set_xvp,601};602 603/* Info of regulators for DA9063 */604static const struct da9063_regulator_info da9063_regulator_info[] = {605 {606 DA9063_BUCK(DA9063, BCORE1, 300, 10, 1570,607 da9063_buck_a_limits,608 DA9063_REG_BUCK_ILIM_C, DA9063_BCORE1_ILIM_MASK),609 DA9063_BUCK_COMMON_FIELDS(BCORE1),610 .vmon = BFIELD(DA9063_BB_REG_MON_REG_4, DA9063_BCORE1_MON_EN),611 },612 {613 DA9063_BUCK(DA9063, BCORE2, 300, 10, 1570,614 da9063_buck_a_limits,615 DA9063_REG_BUCK_ILIM_C, DA9063_BCORE2_ILIM_MASK),616 DA9063_BUCK_COMMON_FIELDS(BCORE2),617 .vmon = BFIELD(DA9063_BB_REG_MON_REG_4, DA9063_BCORE2_MON_EN),618 },619 {620 DA9063_BUCK(DA9063, BPRO, 530, 10, 1800,621 da9063_buck_a_limits,622 DA9063_REG_BUCK_ILIM_B, DA9063_BPRO_ILIM_MASK),623 DA9063_BUCK_COMMON_FIELDS(BPRO),624 .vmon = BFIELD(DA9063_BB_REG_MON_REG_4, DA9063_BPRO_MON_EN),625 },626 {627 DA9063_BUCK(DA9063, BMEM, 800, 20, 3340,628 da9063_buck_b_limits,629 DA9063_REG_BUCK_ILIM_A, DA9063_BMEM_ILIM_MASK),630 DA9063_BUCK_COMMON_FIELDS(BMEM),631 .vmon = BFIELD(DA9063_BB_REG_MON_REG_4, DA9063_BMEM_MON_EN),632 },633 {634 DA9063_BUCK(DA9063, BIO, 800, 20, 3340,635 da9063_buck_b_limits,636 DA9063_REG_BUCK_ILIM_A, DA9063_BIO_ILIM_MASK),637 DA9063_BUCK_COMMON_FIELDS(BIO),638 .vmon = BFIELD(DA9063_BB_REG_MON_REG_4, DA9063_BIO_MON_EN),639 },640 {641 DA9063_BUCK(DA9063, BPERI, 800, 20, 3340,642 da9063_buck_b_limits,643 DA9063_REG_BUCK_ILIM_B, DA9063_BPERI_ILIM_MASK),644 DA9063_BUCK_COMMON_FIELDS(BPERI),645 .vmon = BFIELD(DA9063_BB_REG_MON_REG_4, DA9063_BPERI_MON_EN),646 },647 {648 DA9063_BUCK(DA9063, BCORES_MERGED, 300, 10, 1570,649 da9063_bcores_merged_limits,650 DA9063_REG_BUCK_ILIM_C, DA9063_BCORE1_ILIM_MASK),651 /* BCORES_MERGED uses the same register fields as BCORE1 */652 DA9063_BUCK_COMMON_FIELDS(BCORE1),653 .vmon = BFIELD(DA9063_BB_REG_MON_REG_4, DA9063_BCORE1_MON_EN),654 },655 {656 DA9063_BUCK(DA9063, BMEM_BIO_MERGED, 800, 20, 3340,657 da9063_bmem_bio_merged_limits,658 DA9063_REG_BUCK_ILIM_A, DA9063_BMEM_ILIM_MASK),659 /* BMEM_BIO_MERGED uses the same register fields as BMEM */660 DA9063_BUCK_COMMON_FIELDS(BMEM),661 .vmon = BFIELD(DA9063_BB_REG_MON_REG_4, DA9063_BMEM_MON_EN),662 },663 {664 DA9063_LDO(DA9063, LDO3, 900, 20, 3440),665 .oc_event = BFIELD(DA9063_REG_STATUS_D, DA9063_LDO3_LIM),666 .vmon = BFIELD(DA9063_BB_REG_MON_REG_2, DA9063_LDO3_MON_EN),667 },668 {669 DA9063_LDO(DA9063, LDO7, 900, 50, 3600),670 .oc_event = BFIELD(DA9063_REG_STATUS_D, DA9063_LDO7_LIM),671 .vmon = BFIELD(DA9063_BB_REG_MON_REG_2, DA9063_LDO7_MON_EN),672 },673 {674 DA9063_LDO(DA9063, LDO8, 900, 50, 3600),675 .oc_event = BFIELD(DA9063_REG_STATUS_D, DA9063_LDO8_LIM),676 .vmon = BFIELD(DA9063_BB_REG_MON_REG_2, DA9063_LDO8_MON_EN),677 },678 {679 DA9063_LDO(DA9063, LDO9, 950, 50, 3600),680 .vmon = BFIELD(DA9063_BB_REG_MON_REG_3, DA9063_LDO9_MON_EN),681 },682 {683 DA9063_LDO(DA9063, LDO11, 900, 50, 3600),684 .oc_event = BFIELD(DA9063_REG_STATUS_D, DA9063_LDO11_LIM),685 .vmon = BFIELD(DA9063_BB_REG_MON_REG_3, DA9063_LDO11_MON_EN),686 },687 688 /* The following LDOs are present only on DA9063, not on DA9063L */689 {690 DA9063_LDO(DA9063, LDO1, 600, 20, 1860),691 .vmon = BFIELD(DA9063_BB_REG_MON_REG_2, DA9063_LDO1_MON_EN),692 },693 {694 DA9063_LDO(DA9063, LDO2, 600, 20, 1860),695 .vmon = BFIELD(DA9063_BB_REG_MON_REG_2, DA9063_LDO2_MON_EN),696 },697 {698 DA9063_LDO(DA9063, LDO4, 900, 20, 3440),699 .oc_event = BFIELD(DA9063_REG_STATUS_D, DA9063_LDO4_LIM),700 .vmon = BFIELD(DA9063_BB_REG_MON_REG_2, DA9063_LDO4_MON_EN),701 },702 {703 DA9063_LDO(DA9063, LDO5, 900, 50, 3600),704 .vmon = BFIELD(DA9063_BB_REG_MON_REG_2, DA9063_LDO5_MON_EN),705 },706 {707 DA9063_LDO(DA9063, LDO6, 900, 50, 3600),708 .vmon = BFIELD(DA9063_BB_REG_MON_REG_2, DA9063_LDO6_MON_EN),709 },710 711 {712 DA9063_LDO(DA9063, LDO10, 900, 50, 3600),713 .vmon = BFIELD(DA9063_BB_REG_MON_REG_3, DA9063_LDO10_MON_EN),714 },715};716 717/* Link chip model with regulators info table */718static const struct da9063_dev_model regulators_models[] = {719 {720 .regulator_info = da9063_regulator_info,721 .n_regulators = ARRAY_SIZE(da9063_regulator_info),722 .type = PMIC_TYPE_DA9063,723 },724 {725 .regulator_info = da9063_regulator_info,726 .n_regulators = ARRAY_SIZE(da9063_regulator_info) - 6,727 .type = PMIC_TYPE_DA9063L,728 },729 { }730};731 732/* Regulator interrupt handlers */733static irqreturn_t da9063_ldo_lim_event(int irq, void *data)734{735 struct da9063_regulators *regulators = data;736 struct da9063 *hw = regulators->regulator[0].hw;737 struct da9063_regulator *regl;738 int bits, i, ret;739 740 ret = regmap_read(hw->regmap, DA9063_REG_STATUS_D, &bits);741 if (ret < 0)742 return IRQ_NONE;743 744 for (i = regulators->n_regulators - 1; i >= 0; i--) {745 regl = ®ulators->regulator[i];746 if (regl->info->oc_event.reg != DA9063_REG_STATUS_D)747 continue;748 749 if (BIT(regl->info->oc_event.lsb) & bits) {750 regulator_notifier_call_chain(regl->rdev,751 REGULATOR_EVENT_OVER_CURRENT, NULL);752 }753 }754 755 return IRQ_HANDLED;756}757 758/*759 * Probing and Initialisation functions760 */761static const struct regulator_init_data *da9063_get_regulator_initdata(762 const struct da9063_regulators_pdata *regl_pdata, int id)763{764 int i;765 766 for (i = 0; i < regl_pdata->n_regulators; i++) {767 if (id == regl_pdata->regulator_data[i].id)768 return regl_pdata->regulator_data[i].initdata;769 }770 771 return NULL;772}773 774static int da9063_check_xvp_constraints(struct regulator_config *config)775{776 struct da9063_regulator *regl = config->driver_data;777 const struct regulation_constraints *constr = &config->init_data->constraints;778 const struct notification_limit *uv_l = &constr->under_voltage_limits;779 const struct notification_limit *ov_l = &constr->over_voltage_limits;780 781 /* make sure that only one severity is used to clarify if unchanged, enabled or disabled */782 if ((!!uv_l->prot + !!uv_l->err + !!uv_l->warn) > 1) {783 dev_err(config->dev, "%s: at most one voltage monitoring severity allowed!\n",784 regl->desc.name);785 return -EINVAL;786 }787 788 /* make sure that UV and OV monitoring is set to the same severity and value */789 if (uv_l->prot != ov_l->prot) {790 dev_err(config->dev,791 "%s: protection-microvolt: value must be equal for uv and ov!\n",792 regl->desc.name);793 return -EINVAL;794 }795 if (uv_l->err != ov_l->err) {796 dev_err(config->dev, "%s: error-microvolt: value must be equal for uv and ov!\n",797 regl->desc.name);798 return -EINVAL;799 }800 if (uv_l->warn != ov_l->warn) {801 dev_err(config->dev, "%s: warn-microvolt: value must be equal for uv and ov!\n",802 regl->desc.name);803 return -EINVAL;804 }805 806 return 0;807}808 809static struct of_regulator_match da9063_matches[] = {810 [DA9063_ID_BCORE1] = { .name = "bcore1" },811 [DA9063_ID_BCORE2] = { .name = "bcore2" },812 [DA9063_ID_BPRO] = { .name = "bpro", },813 [DA9063_ID_BMEM] = { .name = "bmem", },814 [DA9063_ID_BIO] = { .name = "bio", },815 [DA9063_ID_BPERI] = { .name = "bperi", },816 [DA9063_ID_BCORES_MERGED] = { .name = "bcores-merged" },817 [DA9063_ID_BMEM_BIO_MERGED] = { .name = "bmem-bio-merged", },818 [DA9063_ID_LDO3] = { .name = "ldo3", },819 [DA9063_ID_LDO7] = { .name = "ldo7", },820 [DA9063_ID_LDO8] = { .name = "ldo8", },821 [DA9063_ID_LDO9] = { .name = "ldo9", },822 [DA9063_ID_LDO11] = { .name = "ldo11", },823 /* The following LDOs are present only on DA9063, not on DA9063L */824 [DA9063_ID_LDO1] = { .name = "ldo1", },825 [DA9063_ID_LDO2] = { .name = "ldo2", },826 [DA9063_ID_LDO4] = { .name = "ldo4", },827 [DA9063_ID_LDO5] = { .name = "ldo5", },828 [DA9063_ID_LDO6] = { .name = "ldo6", },829 [DA9063_ID_LDO10] = { .name = "ldo10", },830};831 832static struct da9063_regulators_pdata *da9063_parse_regulators_dt(833 struct platform_device *pdev,834 struct of_regulator_match **da9063_reg_matches)835{836 struct da9063 *da9063 = dev_get_drvdata(pdev->dev.parent);837 struct da9063_regulators_pdata *pdata;838 struct da9063_regulator_data *rdata;839 struct device_node *node;840 int da9063_matches_len = ARRAY_SIZE(da9063_matches);841 int i, n, num;842 843 if (da9063->type == PMIC_TYPE_DA9063L)844 da9063_matches_len -= 6;845 846 node = of_get_child_by_name(pdev->dev.parent->of_node, "regulators");847 if (!node) {848 dev_err(&pdev->dev, "Regulators device node not found\n");849 return ERR_PTR(-ENODEV);850 }851 852 num = of_regulator_match(&pdev->dev, node, da9063_matches,853 da9063_matches_len);854 of_node_put(node);855 if (num < 0) {856 dev_err(&pdev->dev, "Failed to match regulators\n");857 return ERR_PTR(-EINVAL);858 }859 860 pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL);861 if (!pdata)862 return ERR_PTR(-ENOMEM);863 864 pdata->regulator_data = devm_kcalloc(&pdev->dev,865 num, sizeof(*pdata->regulator_data),866 GFP_KERNEL);867 if (!pdata->regulator_data)868 return ERR_PTR(-ENOMEM);869 pdata->n_regulators = num;870 871 n = 0;872 for (i = 0; i < da9063_matches_len; i++) {873 if (!da9063_matches[i].init_data)874 continue;875 876 rdata = &pdata->regulator_data[n];877 rdata->id = i;878 rdata->initdata = da9063_matches[i].init_data;879 880 n++;881 }882 883 *da9063_reg_matches = da9063_matches;884 return pdata;885}886 887static int da9063_regulator_probe(struct platform_device *pdev)888{889 struct da9063 *da9063 = dev_get_drvdata(pdev->dev.parent);890 struct of_regulator_match *da9063_reg_matches = NULL;891 struct da9063_regulators_pdata *regl_pdata;892 const struct da9063_dev_model *model;893 struct da9063_regulators *regulators;894 struct da9063_regulator *regl;895 struct regulator_config config;896 bool bcores_merged, bmem_bio_merged;897 int id, irq, n, n_regulators, ret, val;898 899 regl_pdata = da9063_parse_regulators_dt(pdev, &da9063_reg_matches);900 901 if (IS_ERR(regl_pdata) || regl_pdata->n_regulators == 0) {902 dev_err(&pdev->dev,903 "No regulators defined for the platform\n");904 return -ENODEV;905 }906 907 /* Find regulators set for particular device model */908 for (model = regulators_models; model->regulator_info; model++) {909 if (model->type == da9063->type)910 break;911 }912 if (!model->regulator_info) {913 dev_err(&pdev->dev, "Chip model not recognised (%u)\n",914 da9063->type);915 return -ENODEV;916 }917 918 ret = regmap_read(da9063->regmap, DA9063_REG_CONFIG_H, &val);919 if (ret < 0) {920 dev_err(&pdev->dev,921 "Error while reading BUCKs configuration\n");922 return ret;923 }924 bcores_merged = val & DA9063_BCORE_MERGE;925 bmem_bio_merged = val & DA9063_BUCK_MERGE;926 927 n_regulators = model->n_regulators;928 if (bcores_merged)929 n_regulators -= 2; /* remove BCORE1, BCORE2 */930 else931 n_regulators--; /* remove BCORES_MERGED */932 if (bmem_bio_merged)933 n_regulators -= 2; /* remove BMEM, BIO */934 else935 n_regulators--; /* remove BMEM_BIO_MERGED */936 937 /* Allocate memory required by usable regulators */938 regulators = devm_kzalloc(&pdev->dev, struct_size(regulators,939 regulator, n_regulators), GFP_KERNEL);940 if (!regulators)941 return -ENOMEM;942 943 regulators->n_regulators = n_regulators;944 platform_set_drvdata(pdev, regulators);945 946 /* Register all regulators declared in platform information */947 n = 0;948 id = 0;949 while (n < regulators->n_regulators) {950 /* Skip regulator IDs depending on merge mode configuration */951 switch (id) {952 case DA9063_ID_BCORE1:953 case DA9063_ID_BCORE2:954 if (bcores_merged) {955 id++;956 continue;957 }958 break;959 case DA9063_ID_BMEM:960 case DA9063_ID_BIO:961 if (bmem_bio_merged) {962 id++;963 continue;964 }965 break;966 case DA9063_ID_BCORES_MERGED:967 if (!bcores_merged) {968 id++;969 continue;970 }971 break;972 case DA9063_ID_BMEM_BIO_MERGED:973 if (!bmem_bio_merged) {974 id++;975 continue;976 }977 break;978 }979 980 /* Initialise regulator structure */981 regl = ®ulators->regulator[n];982 regl->hw = da9063;983 regl->info = &model->regulator_info[id];984 regl->desc = regl->info->desc;985 regl->desc.type = REGULATOR_VOLTAGE;986 regl->desc.owner = THIS_MODULE;987 988 if (regl->info->mode.reg) {989 regl->mode = devm_regmap_field_alloc(&pdev->dev,990 da9063->regmap, regl->info->mode);991 if (IS_ERR(regl->mode))992 return PTR_ERR(regl->mode);993 }994 995 if (regl->info->suspend.reg) {996 regl->suspend = devm_regmap_field_alloc(&pdev->dev,997 da9063->regmap, regl->info->suspend);998 if (IS_ERR(regl->suspend))999 return PTR_ERR(regl->suspend);1000 }1001 1002 if (regl->info->sleep.reg) {1003 regl->sleep = devm_regmap_field_alloc(&pdev->dev,1004 da9063->regmap, regl->info->sleep);1005 if (IS_ERR(regl->sleep))1006 return PTR_ERR(regl->sleep);1007 }1008 1009 if (regl->info->suspend_sleep.reg) {1010 regl->suspend_sleep = devm_regmap_field_alloc(&pdev->dev,1011 da9063->regmap, regl->info->suspend_sleep);1012 if (IS_ERR(regl->suspend_sleep))1013 return PTR_ERR(regl->suspend_sleep);1014 }1015 if (regl->info->vmon.reg) {1016 regl->vmon = devm_regmap_field_alloc(&pdev->dev,1017 da9063->regmap, regl->info->vmon);1018 if (IS_ERR(regl->vmon))1019 return PTR_ERR(regl->vmon);1020 }1021 1022 /* Register regulator */1023 memset(&config, 0, sizeof(config));1024 config.dev = &pdev->dev;1025 config.init_data = da9063_get_regulator_initdata(regl_pdata, id);1026 config.driver_data = regl;1027 if (da9063_reg_matches)1028 config.of_node = da9063_reg_matches[id].of_node;1029 config.regmap = da9063->regmap;1030 1031 /* Checking constraints requires init_data from DT. */1032 if (config.init_data) {1033 ret = da9063_check_xvp_constraints(&config);1034 if (ret)1035 return ret;1036 }1037 1038 regl->rdev = devm_regulator_register(&pdev->dev, ®l->desc,1039 &config);1040 if (IS_ERR(regl->rdev)) {1041 dev_err(&pdev->dev,1042 "Failed to register %s regulator\n",1043 regl->desc.name);1044 return PTR_ERR(regl->rdev);1045 }1046 id++;1047 n++;1048 }1049 1050 /* LDOs overcurrent event support */1051 irq = platform_get_irq_byname(pdev, "LDO_LIM");1052 if (irq < 0)1053 return irq;1054 1055 ret = devm_request_threaded_irq(&pdev->dev, irq,1056 NULL, da9063_ldo_lim_event,1057 IRQF_TRIGGER_LOW | IRQF_ONESHOT,1058 "LDO_LIM", regulators);1059 if (ret)1060 dev_err(&pdev->dev, "Failed to request LDO_LIM IRQ.\n");1061 1062 return ret;1063}1064 1065static struct platform_driver da9063_regulator_driver = {1066 .driver = {1067 .name = DA9063_DRVNAME_REGULATORS,1068 .probe_type = PROBE_PREFER_ASYNCHRONOUS,1069 },1070 .probe = da9063_regulator_probe,1071};1072 1073static int __init da9063_regulator_init(void)1074{1075 return platform_driver_register(&da9063_regulator_driver);1076}1077subsys_initcall(da9063_regulator_init);1078 1079static void __exit da9063_regulator_cleanup(void)1080{1081 platform_driver_unregister(&da9063_regulator_driver);1082}1083module_exit(da9063_regulator_cleanup);1084 1085 1086/* Module information */1087MODULE_AUTHOR("Krystian Garbaciak <krystian.garbaciak@diasemi.com>");1088MODULE_DESCRIPTION("DA9063 regulators driver");1089MODULE_LICENSE("GPL");1090MODULE_ALIAS("platform:" DA9063_DRVNAME_REGULATORS);1091