1// SPDX-License-Identifier: GPL-2.0 2// 3// tps80031-regulator.c -- TI TPS80031 regulator driver. 4// 5// Regulator driver for TI TPS80031/TPS80032 Fully Integrated Power 6// Management with Power Path and Battery Charger. 7// 8// Copyright (c) 2012, NVIDIA Corporation. 9// 10// Author: Laxman Dewangan <ldewangan@nvidia.com> 11 12#include <linux/delay.h> 13#include <linux/err.h> 14#include <linux/init.h> 15#include <linux/kernel.h> 16#include <linux/mfd/tps80031.h> 17#include <linux/module.h> 18#include <linux/platform_device.h> 19#include <linux/regulator/driver.h> 20#include <linux/regulator/machine.h> 21#include <linux/slab.h> 22 23/* Flags for DCDC Voltage reading */ 24#define DCDC_OFFSET_EN BIT(0) 25#define DCDC_EXTENDED_EN BIT(1) 26#define TRACK_MODE_ENABLE BIT(2) 27 28#define SMPS_MULTOFFSET_VIO BIT(1) 29#define SMPS_MULTOFFSET_SMPS1 BIT(3) 30#define SMPS_MULTOFFSET_SMPS2 BIT(4) 31#define SMPS_MULTOFFSET_SMPS3 BIT(6) 32#define SMPS_MULTOFFSET_SMPS4 BIT(0) 33 34#define SMPS_CMD_MASK 0xC0 35#define SMPS_VSEL_MASK 0x3F 36#define LDO_VSEL_MASK 0x1F 37#define LDO_TRACK_VSEL_MASK 0x3F 38 39#define MISC2_LDOUSB_IN_VSYS BIT(4) 40#define MISC2_LDOUSB_IN_PMID BIT(3) 41#define MISC2_LDOUSB_IN_MASK 0x18 42 43#define MISC2_LDO3_SEL_VIB_VAL BIT(0) 44#define MISC2_LDO3_SEL_VIB_MASK 0x1 45 46#define BOOST_HW_PWR_EN BIT(5) 47#define BOOST_HW_PWR_EN_MASK BIT(5) 48 49#define OPA_MODE_EN BIT(6) 50#define OPA_MODE_EN_MASK BIT(6) 51 52#define USB_VBUS_CTRL_SET 0x04 53#define USB_VBUS_CTRL_CLR 0x05 54#define VBUS_DISCHRG 0x20 55 56struct tps80031_regulator_info { 57 /* Regulator register address.*/ 58 u8 trans_reg; 59 u8 state_reg; 60 u8 force_reg; 61 u8 volt_reg; 62 u8 volt_id; 63 64 /*Power request bits */ 65 int preq_bit; 66 67 /* used by regulator core */ 68 struct regulator_desc desc; 69 70}; 71 72struct tps80031_regulator { 73 struct device *dev; 74 struct tps80031_regulator_info *rinfo; 75 76 u8 device_flags; 77 unsigned int config_flags; 78 unsigned int ext_ctrl_flag; 79}; 80 81static inline struct device *to_tps80031_dev(struct regulator_dev *rdev) 82{ 83 return rdev_get_dev(rdev)->parent->parent; 84} 85 86static int tps80031_reg_is_enabled(struct regulator_dev *rdev) 87{ 88 struct tps80031_regulator *ri = rdev_get_drvdata(rdev); 89 struct device *parent = to_tps80031_dev(rdev); 90 u8 reg_val; 91 int ret; 92 93 if (ri->ext_ctrl_flag & TPS80031_EXT_PWR_REQ) 94 return true; 95 96 ret = tps80031_read(parent, TPS80031_SLAVE_ID1, ri->rinfo->state_reg, 97 ®_val); 98 if (ret < 0) { 99 dev_err(&rdev->dev, "Reg 0x%02x read failed, err = %d\n", 100 ri->rinfo->state_reg, ret); 101 return ret; 102 } 103 return (reg_val & TPS80031_STATE_MASK) == TPS80031_STATE_ON; 104} 105 106static int tps80031_reg_enable(struct regulator_dev *rdev) 107{ 108 struct tps80031_regulator *ri = rdev_get_drvdata(rdev); 109 struct device *parent = to_tps80031_dev(rdev); 110 int ret; 111 112 if (ri->ext_ctrl_flag & TPS80031_EXT_PWR_REQ) 113 return 0; 114 115 ret = tps80031_update(parent, TPS80031_SLAVE_ID1, ri->rinfo->state_reg, 116 TPS80031_STATE_ON, TPS80031_STATE_MASK); 117 if (ret < 0) { 118 dev_err(&rdev->dev, "Reg 0x%02x update failed, err = %d\n", 119 ri->rinfo->state_reg, ret); 120 return ret; 121 } 122 return ret; 123} 124 125static int tps80031_reg_disable(struct regulator_dev *rdev) 126{ 127 struct tps80031_regulator *ri = rdev_get_drvdata(rdev); 128 struct device *parent = to_tps80031_dev(rdev); 129 int ret; 130 131 if (ri->ext_ctrl_flag & TPS80031_EXT_PWR_REQ) 132 return 0; 133 134 ret = tps80031_update(parent, TPS80031_SLAVE_ID1, ri->rinfo->state_reg, 135 TPS80031_STATE_OFF, TPS80031_STATE_MASK); 136 if (ret < 0) 137 dev_err(&rdev->dev, "Reg 0x%02x update failed, err = %d\n", 138 ri->rinfo->state_reg, ret); 139 return ret; 140} 141 142/* DCDC voltages for the selector of 58 to 63 */ 143static const int tps80031_dcdc_voltages[4][5] = { 144 { 1350, 1500, 1800, 1900, 2100}, 145 { 1350, 1500, 1800, 1900, 2100}, 146 { 2084, 2315, 2778, 2932, 3241}, 147 { 4167, 2315, 2778, 2932, 3241}, 148}; 149 150static int tps80031_dcdc_list_voltage(struct regulator_dev *rdev, unsigned sel) 151{ 152 struct tps80031_regulator *ri = rdev_get_drvdata(rdev); 153 int volt_index = ri->device_flags & 0x3; 154 155 if (sel == 0) 156 return 0; 157 else if (sel < 58) 158 return regulator_list_voltage_linear(rdev, sel - 1); 159 else 160 return tps80031_dcdc_voltages[volt_index][sel - 58] * 1000; 161} 162 163static int tps80031_dcdc_set_voltage_sel(struct regulator_dev *rdev, 164 unsigned vsel) 165{ 166 struct tps80031_regulator *ri = rdev_get_drvdata(rdev); 167 struct device *parent = to_tps80031_dev(rdev); 168 int ret; 169 u8 reg_val; 170 171 if (ri->rinfo->force_reg) { 172 ret = tps80031_read(parent, ri->rinfo->volt_id, 173 ri->rinfo->force_reg, ®_val); 174 if (ret < 0) { 175 dev_err(ri->dev, "reg 0x%02x read failed, e = %d\n", 176 ri->rinfo->force_reg, ret); 177 return ret; 178 } 179 if (!(reg_val & SMPS_CMD_MASK)) { 180 ret = tps80031_update(parent, ri->rinfo->volt_id, 181 ri->rinfo->force_reg, vsel, SMPS_VSEL_MASK); 182 if (ret < 0) 183 dev_err(ri->dev, 184 "reg 0x%02x update failed, e = %d\n", 185 ri->rinfo->force_reg, ret); 186 return ret; 187 } 188 } 189 ret = tps80031_update(parent, ri->rinfo->volt_id, 190 ri->rinfo->volt_reg, vsel, SMPS_VSEL_MASK); 191 if (ret < 0) 192 dev_err(ri->dev, "reg 0x%02x update failed, e = %d\n", 193 ri->rinfo->volt_reg, ret); 194 return ret; 195} 196 197static int tps80031_dcdc_get_voltage_sel(struct regulator_dev *rdev) 198{ 199 struct tps80031_regulator *ri = rdev_get_drvdata(rdev); 200 struct device *parent = to_tps80031_dev(rdev); 201 uint8_t vsel = 0; 202 int ret; 203 204 if (ri->rinfo->force_reg) { 205 ret = tps80031_read(parent, ri->rinfo->volt_id, 206 ri->rinfo->force_reg, &vsel); 207 if (ret < 0) { 208 dev_err(ri->dev, "reg 0x%02x read failed, e = %d\n", 209 ri->rinfo->force_reg, ret); 210 return ret; 211 } 212 213 if (!(vsel & SMPS_CMD_MASK)) 214 return vsel & SMPS_VSEL_MASK; 215 } 216 ret = tps80031_read(parent, ri->rinfo->volt_id, 217 ri->rinfo->volt_reg, &vsel); 218 if (ret < 0) { 219 dev_err(ri->dev, "reg 0x%02x read failed, e = %d\n", 220 ri->rinfo->volt_reg, ret); 221 return ret; 222 } 223 return vsel & SMPS_VSEL_MASK; 224} 225 226static int tps80031_ldo_list_voltage(struct regulator_dev *rdev, 227 unsigned int sel) 228{ 229 struct tps80031_regulator *ri = rdev_get_drvdata(rdev); 230 struct device *parent = to_tps80031_dev(rdev); 231 232 /* Check for valid setting for TPS80031 or TPS80032-ES1.0 */ 233 if ((ri->rinfo->desc.id == TPS80031_REGULATOR_LDO2) && 234 (ri->device_flags & TRACK_MODE_ENABLE)) { 235 unsigned nvsel = (sel) & 0x1F; 236 if (((tps80031_get_chip_info(parent) == TPS80031) || 237 ((tps80031_get_chip_info(parent) == TPS80032) && 238 (tps80031_get_pmu_version(parent) == 0x0))) && 239 ((nvsel == 0x0) || (nvsel >= 0x19 && nvsel <= 0x1F))) { 240 dev_err(ri->dev, 241 "Invalid sel %d in track mode LDO2\n", 242 nvsel); 243 return -EINVAL; 244 } 245 } 246 247 return regulator_list_voltage_linear(rdev, sel); 248} 249 250static int tps80031_ldo_map_voltage(struct regulator_dev *rdev, 251 int min_uV, int max_uV) 252{ 253 struct tps80031_regulator *ri = rdev_get_drvdata(rdev); 254 struct device *parent = to_tps80031_dev(rdev); 255 256 /* Check for valid setting for TPS80031 or TPS80032-ES1.0 */ 257 if ((ri->rinfo->desc.id == TPS80031_REGULATOR_LDO2) && 258 (ri->device_flags & TRACK_MODE_ENABLE)) { 259 if (((tps80031_get_chip_info(parent) == TPS80031) || 260 ((tps80031_get_chip_info(parent) == TPS80032) && 261 (tps80031_get_pmu_version(parent) == 0x0)))) { 262 return regulator_map_voltage_iterate(rdev, min_uV, 263 max_uV); 264 } 265 } 266 267 return regulator_map_voltage_linear(rdev, min_uV, max_uV); 268} 269 270static int tps80031_vbus_is_enabled(struct regulator_dev *rdev) 271{ 272 struct tps80031_regulator *ri = rdev_get_drvdata(rdev); 273 struct device *parent = to_tps80031_dev(rdev); 274 int ret; 275 uint8_t ctrl1 = 0; 276 uint8_t ctrl3 = 0; 277 278 ret = tps80031_read(parent, TPS80031_SLAVE_ID2, 279 TPS80031_CHARGERUSB_CTRL1, &ctrl1); 280 if (ret < 0) { 281 dev_err(ri->dev, "reg 0x%02x read failed, e = %d\n", 282 TPS80031_CHARGERUSB_CTRL1, ret); 283 return ret; 284 } 285 ret = tps80031_read(parent, TPS80031_SLAVE_ID2, 286 TPS80031_CHARGERUSB_CTRL3, &ctrl3); 287 if (ret < 0) { 288 dev_err(ri->dev, "reg 0x%02x read failed, e = %d\n", 289 TPS80031_CHARGERUSB_CTRL3, ret); 290 return ret; 291 } 292 if ((ctrl1 & OPA_MODE_EN) && (ctrl3 & BOOST_HW_PWR_EN)) 293 return 1; 294 return ret; 295} 296 297static int tps80031_vbus_enable(struct regulator_dev *rdev) 298{ 299 struct tps80031_regulator *ri = rdev_get_drvdata(rdev); 300 struct device *parent = to_tps80031_dev(rdev); 301 int ret; 302 303 ret = tps80031_set_bits(parent, TPS80031_SLAVE_ID2, 304 TPS80031_CHARGERUSB_CTRL1, OPA_MODE_EN); 305 if (ret < 0) { 306 dev_err(ri->dev, "reg 0x%02x read failed, e = %d\n", 307 TPS80031_CHARGERUSB_CTRL1, ret); 308 return ret; 309 } 310 311 ret = tps80031_set_bits(parent, TPS80031_SLAVE_ID2, 312 TPS80031_CHARGERUSB_CTRL3, BOOST_HW_PWR_EN); 313 if (ret < 0) { 314 dev_err(ri->dev, "reg 0x%02x read failed, e = %d\n", 315 TPS80031_CHARGERUSB_CTRL3, ret); 316 return ret; 317 } 318 return ret; 319} 320 321static int tps80031_vbus_disable(struct regulator_dev *rdev) 322{ 323 struct tps80031_regulator *ri = rdev_get_drvdata(rdev); 324 struct device *parent = to_tps80031_dev(rdev); 325 int ret; 326 327 if (ri->config_flags & TPS80031_VBUS_DISCHRG_EN_PDN) { 328 ret = tps80031_write(parent, TPS80031_SLAVE_ID2, 329 USB_VBUS_CTRL_SET, VBUS_DISCHRG); 330 if (ret < 0) { 331 dev_err(ri->dev, "reg 0x%02x write failed, e = %d\n", 332 USB_VBUS_CTRL_SET, ret); 333 return ret; 334 } 335 } 336 337 ret = tps80031_clr_bits(parent, TPS80031_SLAVE_ID2, 338 TPS80031_CHARGERUSB_CTRL1, OPA_MODE_EN); 339 if (ret < 0) { 340 dev_err(ri->dev, "reg 0x%02x clearbit failed, e = %d\n", 341 TPS80031_CHARGERUSB_CTRL1, ret); 342 return ret; 343 } 344 345 ret = tps80031_clr_bits(parent, TPS80031_SLAVE_ID2, 346 TPS80031_CHARGERUSB_CTRL3, BOOST_HW_PWR_EN); 347 if (ret < 0) { 348 dev_err(ri->dev, "reg 0x%02x clearbit failed, e = %d\n", 349 TPS80031_CHARGERUSB_CTRL3, ret); 350 return ret; 351 } 352 353 mdelay(DIV_ROUND_UP(ri->rinfo->desc.enable_time, 1000)); 354 if (ri->config_flags & TPS80031_VBUS_DISCHRG_EN_PDN) { 355 ret = tps80031_write(parent, TPS80031_SLAVE_ID2, 356 USB_VBUS_CTRL_CLR, VBUS_DISCHRG); 357 if (ret < 0) { 358 dev_err(ri->dev, "reg 0x%02x write failed, e = %d\n", 359 USB_VBUS_CTRL_CLR, ret); 360 return ret; 361 } 362 } 363 return ret; 364} 365 366static const struct regulator_ops tps80031_dcdc_ops = { 367 .list_voltage = tps80031_dcdc_list_voltage, 368 .set_voltage_sel = tps80031_dcdc_set_voltage_sel, 369 .get_voltage_sel = tps80031_dcdc_get_voltage_sel, 370 .enable = tps80031_reg_enable, 371 .disable = tps80031_reg_disable, 372 .is_enabled = tps80031_reg_is_enabled, 373}; 374 375static const struct regulator_ops tps80031_ldo_ops = { 376 .list_voltage = tps80031_ldo_list_voltage, 377 .map_voltage = tps80031_ldo_map_voltage, 378 .set_voltage_sel = regulator_set_voltage_sel_regmap, 379 .get_voltage_sel = regulator_get_voltage_sel_regmap, 380 .enable = tps80031_reg_enable, 381 .disable = tps80031_reg_disable, 382 .is_enabled = tps80031_reg_is_enabled, 383}; 384 385static const struct regulator_ops tps80031_vbus_sw_ops = { 386 .list_voltage = regulator_list_voltage_linear, 387 .enable = tps80031_vbus_enable, 388 .disable = tps80031_vbus_disable, 389 .is_enabled = tps80031_vbus_is_enabled, 390}; 391 392static const struct regulator_ops tps80031_vbus_hw_ops = { 393 .list_voltage = regulator_list_voltage_linear, 394}; 395 396static const struct regulator_ops tps80031_ext_reg_ops = { 397 .list_voltage = regulator_list_voltage_linear, 398 .enable = tps80031_reg_enable, 399 .disable = tps80031_reg_disable, 400 .is_enabled = tps80031_reg_is_enabled, 401}; 402 403/* Non-exiting default definition for some register */ 404#define TPS80031_SMPS3_CFG_FORCE 0 405#define TPS80031_SMPS4_CFG_FORCE 0 406 407#define TPS80031_VBUS_CFG_TRANS 0 408#define TPS80031_VBUS_CFG_STATE 0 409 410#define TPS80031_REG_SMPS(_id, _volt_id, _pbit) \ 411{ \ 412 .trans_reg = TPS80031_##_id##_CFG_TRANS, \ 413 .state_reg = TPS80031_##_id##_CFG_STATE, \ 414 .force_reg = TPS80031_##_id##_CFG_FORCE, \ 415 .volt_reg = TPS80031_##_id##_CFG_VOLTAGE, \ 416 .volt_id = TPS80031_SLAVE_##_volt_id, \ 417 .preq_bit = _pbit, \ 418 .desc = { \ 419 .name = "tps80031_"#_id, \ 420 .id = TPS80031_REGULATOR_##_id, \ 421 .n_voltages = 63, \ 422 .ops = &tps80031_dcdc_ops, \ 423 .type = REGULATOR_VOLTAGE, \ 424 .owner = THIS_MODULE, \ 425 .enable_time = 500, \ 426 }, \ 427} 428 429#define TPS80031_REG_LDO(_id, _preq_bit) \ 430{ \ 431 .trans_reg = TPS80031_##_id##_CFG_TRANS, \ 432 .state_reg = TPS80031_##_id##_CFG_STATE, \ 433 .volt_reg = TPS80031_##_id##_CFG_VOLTAGE, \ 434 .volt_id = TPS80031_SLAVE_ID1, \ 435 .preq_bit = _preq_bit, \ 436 .desc = { \ 437 .owner = THIS_MODULE, \ 438 .name = "tps80031_"#_id, \ 439 .id = TPS80031_REGULATOR_##_id, \ 440 .ops = &tps80031_ldo_ops, \ 441 .type = REGULATOR_VOLTAGE, \ 442 .min_uV = 1000000, \ 443 .uV_step = 100000, \ 444 .linear_min_sel = 1, \ 445 .n_voltages = 25, \ 446 .vsel_reg = TPS80031_##_id##_CFG_VOLTAGE, \ 447 .vsel_mask = LDO_VSEL_MASK, \ 448 .enable_time = 500, \ 449 }, \ 450} 451 452#define TPS80031_REG_FIXED(_id, max_mV, _ops, _delay, _pbit) \ 453{ \ 454 .trans_reg = TPS80031_##_id##_CFG_TRANS, \ 455 .state_reg = TPS80031_##_id##_CFG_STATE, \ 456 .volt_id = TPS80031_SLAVE_ID1, \ 457 .preq_bit = _pbit, \ 458 .desc = { \ 459 .name = "tps80031_"#_id, \ 460 .id = TPS80031_REGULATOR_##_id, \ 461 .min_uV = max_mV * 1000, \ 462 .n_voltages = 1, \ 463 .ops = &_ops, \ 464 .type = REGULATOR_VOLTAGE, \ 465 .owner = THIS_MODULE, \ 466 .enable_time = _delay, \ 467 }, \ 468} 469 470static struct tps80031_regulator_info tps80031_rinfo[TPS80031_REGULATOR_MAX] = { 471 TPS80031_REG_SMPS(VIO, ID0, 4), 472 TPS80031_REG_SMPS(SMPS1, ID0, 0), 473 TPS80031_REG_SMPS(SMPS2, ID0, 1), 474 TPS80031_REG_SMPS(SMPS3, ID1, 2), 475 TPS80031_REG_SMPS(SMPS4, ID1, 3), 476 TPS80031_REG_LDO(VANA, -1), 477 TPS80031_REG_LDO(LDO1, 8), 478 TPS80031_REG_LDO(LDO2, 9), 479 TPS80031_REG_LDO(LDO3, 10), 480 TPS80031_REG_LDO(LDO4, 11), 481 TPS80031_REG_LDO(LDO5, 12), 482 TPS80031_REG_LDO(LDO6, 13), 483 TPS80031_REG_LDO(LDO7, 14), 484 TPS80031_REG_LDO(LDOLN, 15), 485 TPS80031_REG_LDO(LDOUSB, 5), 486 TPS80031_REG_FIXED(VBUS, 5000, tps80031_vbus_hw_ops, 100000, -1), 487 TPS80031_REG_FIXED(REGEN1, 3300, tps80031_ext_reg_ops, 0, 16), 488 TPS80031_REG_FIXED(REGEN2, 3300, tps80031_ext_reg_ops, 0, 17), 489 TPS80031_REG_FIXED(SYSEN, 3300, tps80031_ext_reg_ops, 0, 18), 490}; 491 492static int tps80031_power_req_config(struct device *parent, 493 struct tps80031_regulator *ri, 494 struct tps80031_regulator_platform_data *tps80031_pdata) 495{ 496 int ret = 0; 497 498 if (ri->rinfo->preq_bit < 0) 499 goto skip_pwr_req_config; 500 501 ret = tps80031_ext_power_req_config(parent, ri->ext_ctrl_flag, 502 ri->rinfo->preq_bit, ri->rinfo->state_reg, 503 ri->rinfo->trans_reg); 504 if (ret < 0) { 505 dev_err(ri->dev, "ext powerreq config failed, err = %d\n", ret); 506 return ret; 507 } 508 509skip_pwr_req_config: 510 if (tps80031_pdata->ext_ctrl_flag & TPS80031_PWR_ON_ON_SLEEP) { 511 ret = tps80031_update(parent, TPS80031_SLAVE_ID1, 512 ri->rinfo->trans_reg, TPS80031_TRANS_SLEEP_ON, 513 TPS80031_TRANS_SLEEP_MASK); 514 if (ret < 0) { 515 dev_err(ri->dev, "Reg 0x%02x update failed, e %d\n", 516 ri->rinfo->trans_reg, ret); 517 return ret; 518 } 519 } 520 return ret; 521} 522 523static int tps80031_regulator_config(struct device *parent, 524 struct tps80031_regulator *ri, 525 struct tps80031_regulator_platform_data *tps80031_pdata) 526{ 527 int ret = 0; 528 529 switch (ri->rinfo->desc.id) { 530 case TPS80031_REGULATOR_LDOUSB: 531 if (ri->config_flags & (TPS80031_USBLDO_INPUT_VSYS | 532 TPS80031_USBLDO_INPUT_PMID)) { 533 unsigned val; 534 535 if (ri->config_flags & TPS80031_USBLDO_INPUT_VSYS) 536 val = MISC2_LDOUSB_IN_VSYS; 537 else 538 val = MISC2_LDOUSB_IN_PMID; 539 540 ret = tps80031_update(parent, TPS80031_SLAVE_ID1, 541 TPS80031_MISC2, val, 542 MISC2_LDOUSB_IN_MASK); 543 if (ret < 0) { 544 dev_err(ri->dev, 545 "LDOUSB config failed, e= %d\n", ret); 546 return ret; 547 } 548 } 549 break; 550 551 case TPS80031_REGULATOR_LDO3: 552 if (ri->config_flags & TPS80031_LDO3_OUTPUT_VIB) { 553 ret = tps80031_update(parent, TPS80031_SLAVE_ID1, 554 TPS80031_MISC2, MISC2_LDO3_SEL_VIB_VAL, 555 MISC2_LDO3_SEL_VIB_MASK); 556 if (ret < 0) { 557 dev_err(ri->dev, 558 "LDO3 config failed, e = %d\n", ret); 559 return ret; 560 } 561 } 562 break; 563 564 case TPS80031_REGULATOR_VBUS: 565 /* Provide SW control Ops if VBUS is SW control */ 566 if (!(ri->config_flags & TPS80031_VBUS_SW_ONLY)) 567 ri->rinfo->desc.ops = &tps80031_vbus_sw_ops; 568 break; 569 default: 570 break; 571 } 572 573 /* Configure Active state to ON, SLEEP to OFF and OFF_state to OFF */ 574 ret = tps80031_update(parent, TPS80031_SLAVE_ID1, ri->rinfo->trans_reg, 575 TPS80031_TRANS_ACTIVE_ON | TPS80031_TRANS_SLEEP_OFF | 576 TPS80031_TRANS_OFF_OFF, TPS80031_TRANS_ACTIVE_MASK | 577 TPS80031_TRANS_SLEEP_MASK | TPS80031_TRANS_OFF_MASK); 578 if (ret < 0) { 579 dev_err(ri->dev, "trans reg update failed, e %d\n", ret); 580 return ret; 581 } 582 583 return ret; 584} 585 586static int check_smps_mode_mult(struct device *parent, 587 struct tps80031_regulator *ri) 588{ 589 int mult_offset; 590 int ret; 591 u8 smps_offset; 592 u8 smps_mult; 593 594 ret = tps80031_read(parent, TPS80031_SLAVE_ID1, 595 TPS80031_SMPS_OFFSET, &smps_offset); 596 if (ret < 0) { 597 dev_err(parent, "Error in reading smps offset register\n"); 598 return ret; 599 } 600 601 ret = tps80031_read(parent, TPS80031_SLAVE_ID1, 602 TPS80031_SMPS_MULT, &smps_mult); 603 if (ret < 0) { 604 dev_err(parent, "Error in reading smps mult register\n"); 605 return ret; 606 } 607 608 switch (ri->rinfo->desc.id) { 609 case TPS80031_REGULATOR_VIO: 610 mult_offset = SMPS_MULTOFFSET_VIO; 611 break; 612 case TPS80031_REGULATOR_SMPS1: 613 mult_offset = SMPS_MULTOFFSET_SMPS1; 614 break; 615 case TPS80031_REGULATOR_SMPS2: 616 mult_offset = SMPS_MULTOFFSET_SMPS2; 617 break; 618 case TPS80031_REGULATOR_SMPS3: 619 mult_offset = SMPS_MULTOFFSET_SMPS3; 620 break; 621 case TPS80031_REGULATOR_SMPS4: 622 mult_offset = SMPS_MULTOFFSET_SMPS4; 623 break; 624 case TPS80031_REGULATOR_LDO2: 625 ri->device_flags = smps_mult & BIT(5) ? TRACK_MODE_ENABLE : 0; 626 /* TRACK mode the ldo2 varies from 600mV to 1300mV */ 627 if (ri->device_flags & TRACK_MODE_ENABLE) { 628 ri->rinfo->desc.min_uV = 600000; 629 ri->rinfo->desc.uV_step = 12500; 630 ri->rinfo->desc.n_voltages = 57; 631 ri->rinfo->desc.vsel_mask = LDO_TRACK_VSEL_MASK; 632 } 633 return 0; 634 default: 635 return 0; 636 } 637 638 ri->device_flags = (smps_offset & mult_offset) ? DCDC_OFFSET_EN : 0; 639 ri->device_flags |= (smps_mult & mult_offset) ? DCDC_EXTENDED_EN : 0; 640 switch (ri->device_flags) { 641 case 0: 642 ri->rinfo->desc.min_uV = 607700; 643 ri->rinfo->desc.uV_step = 12660; 644 break; 645 case DCDC_OFFSET_EN: 646 ri->rinfo->desc.min_uV = 700000; 647 ri->rinfo->desc.uV_step = 12500; 648 break; 649 case DCDC_EXTENDED_EN: 650 ri->rinfo->desc.min_uV = 1852000; 651 ri->rinfo->desc.uV_step = 38600; 652 break; 653 case DCDC_OFFSET_EN | DCDC_EXTENDED_EN: 654 ri->rinfo->desc.min_uV = 2161000; 655 ri->rinfo->desc.uV_step = 38600; 656 break; 657 } 658 return 0; 659} 660 661static int tps80031_regulator_probe(struct platform_device *pdev) 662{ 663 struct tps80031_platform_data *pdata; 664 struct tps80031_regulator_platform_data *tps_pdata; 665 struct tps80031_regulator *ri; 666 struct tps80031_regulator *pmic; 667 struct regulator_dev *rdev; 668 struct regulator_config config = { }; 669 struct tps80031 *tps80031_mfd = dev_get_drvdata(pdev->dev.parent); 670 int ret; 671 int num; 672 673 pdata = dev_get_platdata(pdev->dev.parent); 674 675 if (!pdata) { 676 dev_err(&pdev->dev, "No platform data\n"); 677 return -EINVAL; 678 } 679 680 pmic = devm_kcalloc(&pdev->dev, 681 TPS80031_REGULATOR_MAX, sizeof(*pmic), GFP_KERNEL); 682 if (!pmic) 683 return -ENOMEM; 684 685 for (num = 0; num < TPS80031_REGULATOR_MAX; ++num) { 686 tps_pdata = pdata->regulator_pdata[num]; 687 ri = &pmic[num]; 688 ri->rinfo = &tps80031_rinfo[num]; 689 ri->dev = &pdev->dev; 690 691 check_smps_mode_mult(pdev->dev.parent, ri); 692 config.dev = &pdev->dev; 693 config.init_data = NULL; 694 config.driver_data = ri; 695 config.regmap = tps80031_mfd->regmap[ri->rinfo->volt_id]; 696 697 if (tps_pdata) { 698 config.init_data = tps_pdata->reg_init_data; 699 ri->config_flags = tps_pdata->config_flags; 700 ri->ext_ctrl_flag = tps_pdata->ext_ctrl_flag; 701 ret = tps80031_regulator_config(pdev->dev.parent, 702 ri, tps_pdata); 703 if (ret < 0) { 704 dev_err(&pdev->dev, 705 "regulator config failed, e %d\n", ret); 706 return ret; 707 } 708 709 ret = tps80031_power_req_config(pdev->dev.parent, 710 ri, tps_pdata); 711 if (ret < 0) { 712 dev_err(&pdev->dev, 713 "pwr_req config failed, err %d\n", ret); 714 return ret; 715 } 716 } 717 rdev = devm_regulator_register(&pdev->dev, &ri->rinfo->desc, 718 &config); 719 if (IS_ERR(rdev)) { 720 dev_err(&pdev->dev, 721 "register regulator failed %s\n", 722 ri->rinfo->desc.name); 723 return PTR_ERR(rdev); 724 } 725 } 726 727 platform_set_drvdata(pdev, pmic); 728 return 0; 729} 730 731static struct platform_driver tps80031_regulator_driver = { 732 .driver = { 733 .name = "tps80031-pmic", 734 }, 735 .probe = tps80031_regulator_probe, 736}; 737 738static int __init tps80031_regulator_init(void) 739{ 740 return platform_driver_register(&tps80031_regulator_driver); 741} 742subsys_initcall(tps80031_regulator_init); 743 744static void __exit tps80031_regulator_exit(void) 745{ 746 platform_driver_unregister(&tps80031_regulator_driver); 747} 748module_exit(tps80031_regulator_exit); 749 750MODULE_ALIAS("platform:tps80031-regulator"); 751MODULE_DESCRIPTION("Regulator Driver for TI TPS80031/TPS80032 PMIC"); 752MODULE_AUTHOR("Laxman Dewangan <ldewangan@nvidia.com>"); 753MODULE_LICENSE("GPL v2"); 754