1 /* 2 * Copyright (c) 2014, Sony Mobile Communications AB. 3 * Copyright (c) 2012-2013, The Linux Foundation. All rights reserved. 4 * 5 * This program is free software; you can redistribute it and/or modify 6 * it under the terms of the GNU General Public License version 2 and 7 * only version 2 as published by the Free Software Foundation. 8 * 9 * This program is distributed in the hope that it will be useful, 10 * but WITHOUT ANY WARRANTY; without even the implied warranty of 11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 12 * GNU General Public License for more details. 13 */ 14 15 #include <linux/module.h> 16 #include <linux/platform_device.h> 17 #include <linux/of.h> 18 #include <linux/of_device.h> 19 #include <linux/regulator/driver.h> 20 #include <linux/regulator/machine.h> 21 #include <linux/regulator/of_regulator.h> 22 #include <linux/mfd/qcom_rpm.h> 23 24 #include <dt-bindings/mfd/qcom-rpm.h> 25 26 #define MAX_REQUEST_LEN 2 27 28 struct request_member { 29 int word; 30 unsigned int mask; 31 int shift; 32 }; 33 34 struct rpm_reg_parts { 35 struct request_member mV; /* used if voltage is in mV */ 36 struct request_member uV; /* used if voltage is in uV */ 37 struct request_member ip; /* peak current in mA */ 38 struct request_member pd; /* pull down enable */ 39 struct request_member ia; /* average current in mA */ 40 struct request_member fm; /* force mode */ 41 struct request_member pm; /* power mode */ 42 struct request_member pc; /* pin control */ 43 struct request_member pf; /* pin function */ 44 struct request_member enable_state; /* NCP and switch */ 45 struct request_member comp_mode; /* NCP */ 46 struct request_member freq; /* frequency: NCP and SMPS */ 47 struct request_member freq_clk_src; /* clock source: SMPS */ 48 struct request_member hpm; /* switch: control OCP and SS */ 49 int request_len; 50 }; 51 52 #define FORCE_MODE_IS_2_BITS(reg) \ 53 (((reg)->parts->fm.mask >> (reg)->parts->fm.shift) == 3) 54 55 struct qcom_rpm_reg { 56 struct qcom_rpm *rpm; 57 58 struct mutex lock; 59 struct device *dev; 60 struct regulator_desc desc; 61 const struct rpm_reg_parts *parts; 62 63 int resource; 64 u32 val[MAX_REQUEST_LEN]; 65 66 int uV; 67 int is_enabled; 68 69 bool supports_force_mode_auto; 70 bool supports_force_mode_bypass; 71 }; 72 73 static const struct rpm_reg_parts rpm8660_ldo_parts = { 74 .request_len = 2, 75 .mV = { 0, 0x00000FFF, 0 }, 76 .ip = { 0, 0x00FFF000, 12 }, 77 .fm = { 0, 0x03000000, 24 }, 78 .pc = { 0, 0x3C000000, 26 }, 79 .pf = { 0, 0xC0000000, 30 }, 80 .pd = { 1, 0x00000001, 0 }, 81 .ia = { 1, 0x00001FFE, 1 }, 82 }; 83 84 static const struct rpm_reg_parts rpm8660_smps_parts = { 85 .request_len = 2, 86 .mV = { 0, 0x00000FFF, 0 }, 87 .ip = { 0, 0x00FFF000, 12 }, 88 .fm = { 0, 0x03000000, 24 }, 89 .pc = { 0, 0x3C000000, 26 }, 90 .pf = { 0, 0xC0000000, 30 }, 91 .pd = { 1, 0x00000001, 0 }, 92 .ia = { 1, 0x00001FFE, 1 }, 93 .freq = { 1, 0x001FE000, 13 }, 94 .freq_clk_src = { 1, 0x00600000, 21 }, 95 }; 96 97 static const struct rpm_reg_parts rpm8660_switch_parts = { 98 .request_len = 1, 99 .enable_state = { 0, 0x00000001, 0 }, 100 .pd = { 0, 0x00000002, 1 }, 101 .pc = { 0, 0x0000003C, 2 }, 102 .pf = { 0, 0x000000C0, 6 }, 103 .hpm = { 0, 0x00000300, 8 }, 104 }; 105 106 static const struct rpm_reg_parts rpm8660_ncp_parts = { 107 .request_len = 1, 108 .mV = { 0, 0x00000FFF, 0 }, 109 .enable_state = { 0, 0x00001000, 12 }, 110 .comp_mode = { 0, 0x00002000, 13 }, 111 .freq = { 0, 0x003FC000, 14 }, 112 }; 113 114 static const struct rpm_reg_parts rpm8960_ldo_parts = { 115 .request_len = 2, 116 .uV = { 0, 0x007FFFFF, 0 }, 117 .pd = { 0, 0x00800000, 23 }, 118 .pc = { 0, 0x0F000000, 24 }, 119 .pf = { 0, 0xF0000000, 28 }, 120 .ip = { 1, 0x000003FF, 0 }, 121 .ia = { 1, 0x000FFC00, 10 }, 122 .fm = { 1, 0x00700000, 20 }, 123 }; 124 125 static const struct rpm_reg_parts rpm8960_smps_parts = { 126 .request_len = 2, 127 .uV = { 0, 0x007FFFFF, 0 }, 128 .pd = { 0, 0x00800000, 23 }, 129 .pc = { 0, 0x0F000000, 24 }, 130 .pf = { 0, 0xF0000000, 28 }, 131 .ip = { 1, 0x000003FF, 0 }, 132 .ia = { 1, 0x000FFC00, 10 }, 133 .fm = { 1, 0x00700000, 20 }, 134 .pm = { 1, 0x00800000, 23 }, 135 .freq = { 1, 0x1F000000, 24 }, 136 .freq_clk_src = { 1, 0x60000000, 29 }, 137 }; 138 139 static const struct rpm_reg_parts rpm8960_switch_parts = { 140 .request_len = 1, 141 .enable_state = { 0, 0x00000001, 0 }, 142 .pd = { 0, 0x00000002, 1 }, 143 .pc = { 0, 0x0000003C, 2 }, 144 .pf = { 0, 0x000003C0, 6 }, 145 .hpm = { 0, 0x00000C00, 10 }, 146 }; 147 148 static const struct rpm_reg_parts rpm8960_ncp_parts = { 149 .request_len = 1, 150 .uV = { 0, 0x007FFFFF, 0 }, 151 .enable_state = { 0, 0x00800000, 23 }, 152 .comp_mode = { 0, 0x01000000, 24 }, 153 .freq = { 0, 0x3E000000, 25 }, 154 }; 155 156 /* 157 * Physically available PMIC regulator voltage ranges 158 */ 159 static const struct regulator_linear_range pldo_ranges[] = { 160 REGULATOR_LINEAR_RANGE( 750000, 0, 59, 12500), 161 REGULATOR_LINEAR_RANGE(1500000, 60, 123, 25000), 162 REGULATOR_LINEAR_RANGE(3100000, 124, 160, 50000), 163 }; 164 165 static const struct regulator_linear_range nldo_ranges[] = { 166 REGULATOR_LINEAR_RANGE( 750000, 0, 63, 12500), 167 }; 168 169 static const struct regulator_linear_range nldo1200_ranges[] = { 170 REGULATOR_LINEAR_RANGE( 375000, 0, 59, 6250), 171 REGULATOR_LINEAR_RANGE( 750000, 60, 123, 12500), 172 }; 173 174 static const struct regulator_linear_range smps_ranges[] = { 175 REGULATOR_LINEAR_RANGE( 375000, 0, 29, 12500), 176 REGULATOR_LINEAR_RANGE( 750000, 30, 89, 12500), 177 REGULATOR_LINEAR_RANGE(1500000, 90, 153, 25000), 178 }; 179 180 static const struct regulator_linear_range ftsmps_ranges[] = { 181 REGULATOR_LINEAR_RANGE( 350000, 0, 6, 50000), 182 REGULATOR_LINEAR_RANGE( 700000, 7, 63, 12500), 183 REGULATOR_LINEAR_RANGE(1500000, 64, 100, 50000), 184 }; 185 186 static const struct regulator_linear_range smb208_ranges[] = { 187 REGULATOR_LINEAR_RANGE( 375000, 0, 29, 12500), 188 REGULATOR_LINEAR_RANGE( 750000, 30, 89, 12500), 189 REGULATOR_LINEAR_RANGE(1500000, 90, 153, 25000), 190 REGULATOR_LINEAR_RANGE(3100000, 154, 234, 25000), 191 }; 192 193 static const struct regulator_linear_range ncp_ranges[] = { 194 REGULATOR_LINEAR_RANGE(1500000, 0, 31, 50000), 195 }; 196 197 static int rpm_reg_write(struct qcom_rpm_reg *vreg, 198 const struct request_member *req, 199 const int value) 200 { 201 if (WARN_ON((value << req->shift) & ~req->mask)) 202 return -EINVAL; 203 204 vreg->val[req->word] &= ~req->mask; 205 vreg->val[req->word] |= value << req->shift; 206 207 return qcom_rpm_write(vreg->rpm, 208 QCOM_RPM_ACTIVE_STATE, 209 vreg->resource, 210 vreg->val, 211 vreg->parts->request_len); 212 } 213 214 static int rpm_reg_set_mV_sel(struct regulator_dev *rdev, 215 unsigned selector) 216 { 217 struct qcom_rpm_reg *vreg = rdev_get_drvdata(rdev); 218 const struct rpm_reg_parts *parts = vreg->parts; 219 const struct request_member *req = &parts->mV; 220 int ret = 0; 221 int uV; 222 223 if (req->mask == 0) 224 return -EINVAL; 225 226 uV = regulator_list_voltage_linear_range(rdev, selector); 227 if (uV < 0) 228 return uV; 229 230 mutex_lock(&vreg->lock); 231 if (vreg->is_enabled) 232 ret = rpm_reg_write(vreg, req, uV / 1000); 233 234 if (!ret) 235 vreg->uV = uV; 236 mutex_unlock(&vreg->lock); 237 238 return ret; 239 } 240 241 static int rpm_reg_set_uV_sel(struct regulator_dev *rdev, 242 unsigned selector) 243 { 244 struct qcom_rpm_reg *vreg = rdev_get_drvdata(rdev); 245 const struct rpm_reg_parts *parts = vreg->parts; 246 const struct request_member *req = &parts->uV; 247 int ret = 0; 248 int uV; 249 250 if (req->mask == 0) 251 return -EINVAL; 252 253 uV = regulator_list_voltage_linear_range(rdev, selector); 254 if (uV < 0) 255 return uV; 256 257 mutex_lock(&vreg->lock); 258 if (vreg->is_enabled) 259 ret = rpm_reg_write(vreg, req, uV); 260 261 if (!ret) 262 vreg->uV = uV; 263 mutex_unlock(&vreg->lock); 264 265 return ret; 266 } 267 268 static int rpm_reg_get_voltage(struct regulator_dev *rdev) 269 { 270 struct qcom_rpm_reg *vreg = rdev_get_drvdata(rdev); 271 272 return vreg->uV; 273 } 274 275 static int rpm_reg_mV_enable(struct regulator_dev *rdev) 276 { 277 struct qcom_rpm_reg *vreg = rdev_get_drvdata(rdev); 278 const struct rpm_reg_parts *parts = vreg->parts; 279 const struct request_member *req = &parts->mV; 280 int ret; 281 282 if (req->mask == 0) 283 return -EINVAL; 284 285 mutex_lock(&vreg->lock); 286 ret = rpm_reg_write(vreg, req, vreg->uV / 1000); 287 if (!ret) 288 vreg->is_enabled = 1; 289 mutex_unlock(&vreg->lock); 290 291 return ret; 292 } 293 294 static int rpm_reg_uV_enable(struct regulator_dev *rdev) 295 { 296 struct qcom_rpm_reg *vreg = rdev_get_drvdata(rdev); 297 const struct rpm_reg_parts *parts = vreg->parts; 298 const struct request_member *req = &parts->uV; 299 int ret; 300 301 if (req->mask == 0) 302 return -EINVAL; 303 304 mutex_lock(&vreg->lock); 305 ret = rpm_reg_write(vreg, req, vreg->uV); 306 if (!ret) 307 vreg->is_enabled = 1; 308 mutex_unlock(&vreg->lock); 309 310 return ret; 311 } 312 313 static int rpm_reg_switch_enable(struct regulator_dev *rdev) 314 { 315 struct qcom_rpm_reg *vreg = rdev_get_drvdata(rdev); 316 const struct rpm_reg_parts *parts = vreg->parts; 317 const struct request_member *req = &parts->enable_state; 318 int ret; 319 320 if (req->mask == 0) 321 return -EINVAL; 322 323 mutex_lock(&vreg->lock); 324 ret = rpm_reg_write(vreg, req, 1); 325 if (!ret) 326 vreg->is_enabled = 1; 327 mutex_unlock(&vreg->lock); 328 329 return ret; 330 } 331 332 static int rpm_reg_mV_disable(struct regulator_dev *rdev) 333 { 334 struct qcom_rpm_reg *vreg = rdev_get_drvdata(rdev); 335 const struct rpm_reg_parts *parts = vreg->parts; 336 const struct request_member *req = &parts->mV; 337 int ret; 338 339 if (req->mask == 0) 340 return -EINVAL; 341 342 mutex_lock(&vreg->lock); 343 ret = rpm_reg_write(vreg, req, 0); 344 if (!ret) 345 vreg->is_enabled = 0; 346 mutex_unlock(&vreg->lock); 347 348 return ret; 349 } 350 351 static int rpm_reg_uV_disable(struct regulator_dev *rdev) 352 { 353 struct qcom_rpm_reg *vreg = rdev_get_drvdata(rdev); 354 const struct rpm_reg_parts *parts = vreg->parts; 355 const struct request_member *req = &parts->uV; 356 int ret; 357 358 if (req->mask == 0) 359 return -EINVAL; 360 361 mutex_lock(&vreg->lock); 362 ret = rpm_reg_write(vreg, req, 0); 363 if (!ret) 364 vreg->is_enabled = 0; 365 mutex_unlock(&vreg->lock); 366 367 return ret; 368 } 369 370 static int rpm_reg_switch_disable(struct regulator_dev *rdev) 371 { 372 struct qcom_rpm_reg *vreg = rdev_get_drvdata(rdev); 373 const struct rpm_reg_parts *parts = vreg->parts; 374 const struct request_member *req = &parts->enable_state; 375 int ret; 376 377 if (req->mask == 0) 378 return -EINVAL; 379 380 mutex_lock(&vreg->lock); 381 ret = rpm_reg_write(vreg, req, 0); 382 if (!ret) 383 vreg->is_enabled = 0; 384 mutex_unlock(&vreg->lock); 385 386 return ret; 387 } 388 389 static int rpm_reg_is_enabled(struct regulator_dev *rdev) 390 { 391 struct qcom_rpm_reg *vreg = rdev_get_drvdata(rdev); 392 393 return vreg->is_enabled; 394 } 395 396 static int rpm_reg_set_load(struct regulator_dev *rdev, int load_uA) 397 { 398 struct qcom_rpm_reg *vreg = rdev_get_drvdata(rdev); 399 const struct rpm_reg_parts *parts = vreg->parts; 400 const struct request_member *req = &parts->ia; 401 int load_mA = load_uA / 1000; 402 int max_mA = req->mask >> req->shift; 403 int ret; 404 405 if (req->mask == 0) 406 return -EINVAL; 407 408 if (load_mA > max_mA) 409 load_mA = max_mA; 410 411 mutex_lock(&vreg->lock); 412 ret = rpm_reg_write(vreg, req, load_mA); 413 mutex_unlock(&vreg->lock); 414 415 return ret; 416 } 417 418 static struct regulator_ops uV_ops = { 419 .list_voltage = regulator_list_voltage_linear_range, 420 421 .set_voltage_sel = rpm_reg_set_uV_sel, 422 .get_voltage = rpm_reg_get_voltage, 423 424 .enable = rpm_reg_uV_enable, 425 .disable = rpm_reg_uV_disable, 426 .is_enabled = rpm_reg_is_enabled, 427 428 .set_load = rpm_reg_set_load, 429 }; 430 431 static struct regulator_ops mV_ops = { 432 .list_voltage = regulator_list_voltage_linear_range, 433 434 .set_voltage_sel = rpm_reg_set_mV_sel, 435 .get_voltage = rpm_reg_get_voltage, 436 437 .enable = rpm_reg_mV_enable, 438 .disable = rpm_reg_mV_disable, 439 .is_enabled = rpm_reg_is_enabled, 440 441 .set_load = rpm_reg_set_load, 442 }; 443 444 static struct regulator_ops switch_ops = { 445 .enable = rpm_reg_switch_enable, 446 .disable = rpm_reg_switch_disable, 447 .is_enabled = rpm_reg_is_enabled, 448 }; 449 450 /* 451 * PM8058 regulators 452 */ 453 static const struct qcom_rpm_reg pm8058_pldo = { 454 .desc.linear_ranges = pldo_ranges, 455 .desc.n_linear_ranges = ARRAY_SIZE(pldo_ranges), 456 .desc.n_voltages = 161, 457 .desc.ops = &mV_ops, 458 .parts = &rpm8660_ldo_parts, 459 .supports_force_mode_auto = false, 460 .supports_force_mode_bypass = false, 461 }; 462 463 static const struct qcom_rpm_reg pm8058_nldo = { 464 .desc.linear_ranges = nldo_ranges, 465 .desc.n_linear_ranges = ARRAY_SIZE(nldo_ranges), 466 .desc.n_voltages = 64, 467 .desc.ops = &mV_ops, 468 .parts = &rpm8660_ldo_parts, 469 .supports_force_mode_auto = false, 470 .supports_force_mode_bypass = false, 471 }; 472 473 static const struct qcom_rpm_reg pm8058_smps = { 474 .desc.linear_ranges = smps_ranges, 475 .desc.n_linear_ranges = ARRAY_SIZE(smps_ranges), 476 .desc.n_voltages = 154, 477 .desc.ops = &mV_ops, 478 .parts = &rpm8660_smps_parts, 479 .supports_force_mode_auto = false, 480 .supports_force_mode_bypass = false, 481 }; 482 483 static const struct qcom_rpm_reg pm8058_ncp = { 484 .desc.linear_ranges = ncp_ranges, 485 .desc.n_linear_ranges = ARRAY_SIZE(ncp_ranges), 486 .desc.n_voltages = 32, 487 .desc.ops = &mV_ops, 488 .parts = &rpm8660_ncp_parts, 489 }; 490 491 static const struct qcom_rpm_reg pm8058_switch = { 492 .desc.ops = &switch_ops, 493 .parts = &rpm8660_switch_parts, 494 }; 495 496 /* 497 * PM8901 regulators 498 */ 499 static const struct qcom_rpm_reg pm8901_pldo = { 500 .desc.linear_ranges = pldo_ranges, 501 .desc.n_linear_ranges = ARRAY_SIZE(pldo_ranges), 502 .desc.n_voltages = 161, 503 .desc.ops = &mV_ops, 504 .parts = &rpm8660_ldo_parts, 505 .supports_force_mode_auto = false, 506 .supports_force_mode_bypass = true, 507 }; 508 509 static const struct qcom_rpm_reg pm8901_nldo = { 510 .desc.linear_ranges = nldo_ranges, 511 .desc.n_linear_ranges = ARRAY_SIZE(nldo_ranges), 512 .desc.n_voltages = 64, 513 .desc.ops = &mV_ops, 514 .parts = &rpm8660_ldo_parts, 515 .supports_force_mode_auto = false, 516 .supports_force_mode_bypass = true, 517 }; 518 519 static const struct qcom_rpm_reg pm8901_ftsmps = { 520 .desc.linear_ranges = ftsmps_ranges, 521 .desc.n_linear_ranges = ARRAY_SIZE(ftsmps_ranges), 522 .desc.n_voltages = 101, 523 .desc.ops = &mV_ops, 524 .parts = &rpm8660_smps_parts, 525 .supports_force_mode_auto = true, 526 .supports_force_mode_bypass = false, 527 }; 528 529 static const struct qcom_rpm_reg pm8901_switch = { 530 .desc.ops = &switch_ops, 531 .parts = &rpm8660_switch_parts, 532 }; 533 534 /* 535 * PM8921 regulators 536 */ 537 static const struct qcom_rpm_reg pm8921_pldo = { 538 .desc.linear_ranges = pldo_ranges, 539 .desc.n_linear_ranges = ARRAY_SIZE(pldo_ranges), 540 .desc.n_voltages = 161, 541 .desc.ops = &uV_ops, 542 .parts = &rpm8960_ldo_parts, 543 .supports_force_mode_auto = false, 544 .supports_force_mode_bypass = true, 545 }; 546 547 static const struct qcom_rpm_reg pm8921_nldo = { 548 .desc.linear_ranges = nldo_ranges, 549 .desc.n_linear_ranges = ARRAY_SIZE(nldo_ranges), 550 .desc.n_voltages = 64, 551 .desc.ops = &uV_ops, 552 .parts = &rpm8960_ldo_parts, 553 .supports_force_mode_auto = false, 554 .supports_force_mode_bypass = true, 555 }; 556 557 static const struct qcom_rpm_reg pm8921_nldo1200 = { 558 .desc.linear_ranges = nldo1200_ranges, 559 .desc.n_linear_ranges = ARRAY_SIZE(nldo1200_ranges), 560 .desc.n_voltages = 124, 561 .desc.ops = &uV_ops, 562 .parts = &rpm8960_ldo_parts, 563 .supports_force_mode_auto = false, 564 .supports_force_mode_bypass = true, 565 }; 566 567 static const struct qcom_rpm_reg pm8921_smps = { 568 .desc.linear_ranges = smps_ranges, 569 .desc.n_linear_ranges = ARRAY_SIZE(smps_ranges), 570 .desc.n_voltages = 154, 571 .desc.ops = &uV_ops, 572 .parts = &rpm8960_smps_parts, 573 .supports_force_mode_auto = true, 574 .supports_force_mode_bypass = false, 575 }; 576 577 static const struct qcom_rpm_reg pm8921_ftsmps = { 578 .desc.linear_ranges = ftsmps_ranges, 579 .desc.n_linear_ranges = ARRAY_SIZE(ftsmps_ranges), 580 .desc.n_voltages = 101, 581 .desc.ops = &uV_ops, 582 .parts = &rpm8960_smps_parts, 583 .supports_force_mode_auto = true, 584 .supports_force_mode_bypass = false, 585 }; 586 587 static const struct qcom_rpm_reg pm8921_ncp = { 588 .desc.linear_ranges = ncp_ranges, 589 .desc.n_linear_ranges = ARRAY_SIZE(ncp_ranges), 590 .desc.n_voltages = 32, 591 .desc.ops = &uV_ops, 592 .parts = &rpm8960_ncp_parts, 593 }; 594 595 static const struct qcom_rpm_reg pm8921_switch = { 596 .desc.ops = &switch_ops, 597 .parts = &rpm8960_switch_parts, 598 }; 599 600 static const struct qcom_rpm_reg smb208_smps = { 601 .desc.linear_ranges = smb208_ranges, 602 .desc.n_linear_ranges = ARRAY_SIZE(smb208_ranges), 603 .desc.n_voltages = 235, 604 .desc.ops = &uV_ops, 605 .parts = &rpm8960_smps_parts, 606 .supports_force_mode_auto = false, 607 .supports_force_mode_bypass = false, 608 }; 609 610 static int rpm_reg_set(struct qcom_rpm_reg *vreg, 611 const struct request_member *req, 612 const int value) 613 { 614 if (req->mask == 0 || (value << req->shift) & ~req->mask) 615 return -EINVAL; 616 617 vreg->val[req->word] &= ~req->mask; 618 vreg->val[req->word] |= value << req->shift; 619 620 return 0; 621 } 622 623 static int rpm_reg_of_parse_freq(struct device *dev, 624 struct device_node *node, 625 struct qcom_rpm_reg *vreg) 626 { 627 static const int freq_table[] = { 628 19200000, 9600000, 6400000, 4800000, 3840000, 3200000, 2740000, 629 2400000, 2130000, 1920000, 1750000, 1600000, 1480000, 1370000, 630 1280000, 1200000, 631 632 }; 633 const char *key; 634 u32 freq; 635 int ret; 636 int i; 637 638 key = "qcom,switch-mode-frequency"; 639 ret = of_property_read_u32(node, key, &freq); 640 if (ret) { 641 dev_err(dev, "regulator requires %s property\n", key); 642 return -EINVAL; 643 } 644 645 for (i = 0; i < ARRAY_SIZE(freq_table); i++) { 646 if (freq == freq_table[i]) { 647 rpm_reg_set(vreg, &vreg->parts->freq, i + 1); 648 return 0; 649 } 650 } 651 652 dev_err(dev, "invalid frequency %d\n", freq); 653 return -EINVAL; 654 } 655 656 static int rpm_reg_of_parse(struct device_node *node, 657 const struct regulator_desc *desc, 658 struct regulator_config *config) 659 { 660 struct qcom_rpm_reg *vreg = config->driver_data; 661 struct device *dev = config->dev; 662 const char *key; 663 u32 force_mode; 664 bool pwm; 665 u32 val; 666 int ret; 667 668 key = "bias-pull-down"; 669 if (of_property_read_bool(node, key)) { 670 ret = rpm_reg_set(vreg, &vreg->parts->pd, 1); 671 if (ret) { 672 dev_err(dev, "%s is invalid", key); 673 return ret; 674 } 675 } 676 677 if (vreg->parts->freq.mask) { 678 ret = rpm_reg_of_parse_freq(dev, node, vreg); 679 if (ret < 0) 680 return ret; 681 } 682 683 if (vreg->parts->pm.mask) { 684 key = "qcom,power-mode-hysteretic"; 685 pwm = !of_property_read_bool(node, key); 686 687 ret = rpm_reg_set(vreg, &vreg->parts->pm, pwm); 688 if (ret) { 689 dev_err(dev, "failed to set power mode\n"); 690 return ret; 691 } 692 } 693 694 if (vreg->parts->fm.mask) { 695 force_mode = -1; 696 697 key = "qcom,force-mode"; 698 ret = of_property_read_u32(node, key, &val); 699 if (ret == -EINVAL) { 700 val = QCOM_RPM_FORCE_MODE_NONE; 701 } else if (ret < 0) { 702 dev_err(dev, "failed to read %s\n", key); 703 return ret; 704 } 705 706 /* 707 * If force-mode is encoded as 2 bits then the 708 * possible register values are: 709 * NONE, LPM, HPM 710 * otherwise: 711 * NONE, LPM, AUTO, HPM, BYPASS 712 */ 713 switch (val) { 714 case QCOM_RPM_FORCE_MODE_NONE: 715 force_mode = 0; 716 break; 717 case QCOM_RPM_FORCE_MODE_LPM: 718 force_mode = 1; 719 break; 720 case QCOM_RPM_FORCE_MODE_HPM: 721 if (FORCE_MODE_IS_2_BITS(vreg)) 722 force_mode = 2; 723 else 724 force_mode = 3; 725 break; 726 case QCOM_RPM_FORCE_MODE_AUTO: 727 if (vreg->supports_force_mode_auto) 728 force_mode = 2; 729 break; 730 case QCOM_RPM_FORCE_MODE_BYPASS: 731 if (vreg->supports_force_mode_bypass) 732 force_mode = 4; 733 break; 734 } 735 736 if (force_mode == -1) { 737 dev_err(dev, "invalid force mode\n"); 738 return -EINVAL; 739 } 740 741 ret = rpm_reg_set(vreg, &vreg->parts->fm, force_mode); 742 if (ret) { 743 dev_err(dev, "failed to set force mode\n"); 744 return ret; 745 } 746 } 747 748 return 0; 749 } 750 751 struct rpm_regulator_data { 752 const char *name; 753 int resource; 754 const struct qcom_rpm_reg *template; 755 const char *supply; 756 }; 757 758 static const struct rpm_regulator_data rpm_pm8058_regulators[] = { 759 { "l0", QCOM_RPM_PM8058_LDO0, &pm8058_nldo, "vdd_l0_l1_lvs" }, 760 { "l1", QCOM_RPM_PM8058_LDO1, &pm8058_nldo, "vdd_l0_l1_lvs" }, 761 { "l2", QCOM_RPM_PM8058_LDO2, &pm8058_pldo, "vdd_l2_l11_l12" }, 762 { "l3", QCOM_RPM_PM8058_LDO3, &pm8058_pldo, "vdd_l3_l4_l5" }, 763 { "l4", QCOM_RPM_PM8058_LDO4, &pm8058_pldo, "vdd_l3_l4_l5" }, 764 { "l5", QCOM_RPM_PM8058_LDO5, &pm8058_pldo, "vdd_l3_l4_l5" }, 765 { "l6", QCOM_RPM_PM8058_LDO6, &pm8058_pldo, "vdd_l6_l7" }, 766 { "l7", QCOM_RPM_PM8058_LDO7, &pm8058_pldo, "vdd_l6_l7" }, 767 { "l8", QCOM_RPM_PM8058_LDO8, &pm8058_pldo, "vdd_l8" }, 768 { "l9", QCOM_RPM_PM8058_LDO9, &pm8058_pldo, "vdd_l9" }, 769 { "l10", QCOM_RPM_PM8058_LDO10, &pm8058_pldo, "vdd_l10" }, 770 { "l11", QCOM_RPM_PM8058_LDO11, &pm8058_pldo, "vdd_l2_l11_l12" }, 771 { "l12", QCOM_RPM_PM8058_LDO12, &pm8058_pldo, "vdd_l2_l11_l12" }, 772 { "l13", QCOM_RPM_PM8058_LDO13, &pm8058_pldo, "vdd_l13_l16" }, 773 { "l14", QCOM_RPM_PM8058_LDO14, &pm8058_pldo, "vdd_l14_l15" }, 774 { "l15", QCOM_RPM_PM8058_LDO15, &pm8058_pldo, "vdd_l14_l15" }, 775 { "l16", QCOM_RPM_PM8058_LDO16, &pm8058_pldo, "vdd_l13_l16" }, 776 { "l17", QCOM_RPM_PM8058_LDO17, &pm8058_pldo, "vdd_l17_l18" }, 777 { "l18", QCOM_RPM_PM8058_LDO18, &pm8058_pldo, "vdd_l17_l18" }, 778 { "l19", QCOM_RPM_PM8058_LDO19, &pm8058_pldo, "vdd_l19_l20" }, 779 { "l20", QCOM_RPM_PM8058_LDO20, &pm8058_pldo, "vdd_l19_l20" }, 780 { "l21", QCOM_RPM_PM8058_LDO21, &pm8058_nldo, "vdd_l21" }, 781 { "l22", QCOM_RPM_PM8058_LDO22, &pm8058_nldo, "vdd_l22" }, 782 { "l23", QCOM_RPM_PM8058_LDO23, &pm8058_nldo, "vdd_l23_l24_l25" }, 783 { "l24", QCOM_RPM_PM8058_LDO24, &pm8058_nldo, "vdd_l23_l24_l25" }, 784 { "l25", QCOM_RPM_PM8058_LDO25, &pm8058_nldo, "vdd_l23_l24_l25" }, 785 786 { "s0", QCOM_RPM_PM8058_SMPS0, &pm8058_smps, "vdd_s0" }, 787 { "s1", QCOM_RPM_PM8058_SMPS1, &pm8058_smps, "vdd_s1" }, 788 { "s2", QCOM_RPM_PM8058_SMPS2, &pm8058_smps, "vdd_s2" }, 789 { "s3", QCOM_RPM_PM8058_SMPS3, &pm8058_smps, "vdd_s3" }, 790 { "s4", QCOM_RPM_PM8058_SMPS4, &pm8058_smps, "vdd_s4" }, 791 792 { "lvs0", QCOM_RPM_PM8058_LVS0, &pm8058_switch, "vdd_l0_l1_lvs" }, 793 { "lvs1", QCOM_RPM_PM8058_LVS1, &pm8058_switch, "vdd_l0_l1_lvs" }, 794 795 { "ncp", QCOM_RPM_PM8058_NCP, &pm8058_ncp, "vdd_ncp" }, 796 { } 797 }; 798 799 static const struct rpm_regulator_data rpm_pm8901_regulators[] = { 800 { "l0", QCOM_RPM_PM8901_LDO0, &pm8901_nldo, "vdd_l0" }, 801 { "l1", QCOM_RPM_PM8901_LDO1, &pm8901_pldo, "vdd_l1" }, 802 { "l2", QCOM_RPM_PM8901_LDO2, &pm8901_pldo, "vdd_l2" }, 803 { "l3", QCOM_RPM_PM8901_LDO3, &pm8901_pldo, "vdd_l3" }, 804 { "l4", QCOM_RPM_PM8901_LDO4, &pm8901_pldo, "vdd_l4" }, 805 { "l5", QCOM_RPM_PM8901_LDO5, &pm8901_pldo, "vdd_l5" }, 806 { "l6", QCOM_RPM_PM8901_LDO6, &pm8901_pldo, "vdd_l6" }, 807 808 { "s0", QCOM_RPM_PM8901_SMPS0, &pm8901_ftsmps, "vdd_s0" }, 809 { "s1", QCOM_RPM_PM8901_SMPS1, &pm8901_ftsmps, "vdd_s1" }, 810 { "s2", QCOM_RPM_PM8901_SMPS2, &pm8901_ftsmps, "vdd_s2" }, 811 { "s3", QCOM_RPM_PM8901_SMPS3, &pm8901_ftsmps, "vdd_s3" }, 812 { "s4", QCOM_RPM_PM8901_SMPS4, &pm8901_ftsmps, "vdd_s4" }, 813 814 { "lvs0", QCOM_RPM_PM8901_LVS0, &pm8901_switch, "lvs0_in" }, 815 { "lvs1", QCOM_RPM_PM8901_LVS1, &pm8901_switch, "lvs1_in" }, 816 { "lvs2", QCOM_RPM_PM8901_LVS2, &pm8901_switch, "lvs2_in" }, 817 { "lvs3", QCOM_RPM_PM8901_LVS3, &pm8901_switch, "lvs3_in" }, 818 819 { "mvs", QCOM_RPM_PM8901_MVS, &pm8901_switch, "mvs_in" }, 820 { } 821 }; 822 823 static const struct rpm_regulator_data rpm_pm8921_regulators[] = { 824 { "s1", QCOM_RPM_PM8921_SMPS1, &pm8921_smps, "vdd_s1" }, 825 { "s2", QCOM_RPM_PM8921_SMPS2, &pm8921_smps, "vdd_s2" }, 826 { "s3", QCOM_RPM_PM8921_SMPS3, &pm8921_smps }, 827 { "s4", QCOM_RPM_PM8921_SMPS4, &pm8921_smps, "vdd_s4" }, 828 { "s7", QCOM_RPM_PM8921_SMPS7, &pm8921_smps, "vdd_s7" }, 829 { "s8", QCOM_RPM_PM8921_SMPS8, &pm8921_smps, "vdd_s8" }, 830 831 { "l1", QCOM_RPM_PM8921_LDO1, &pm8921_nldo, "vdd_l1_l2_l12_l18" }, 832 { "l2", QCOM_RPM_PM8921_LDO2, &pm8921_nldo, "vdd_l1_l2_l12_l18" }, 833 { "l3", QCOM_RPM_PM8921_LDO3, &pm8921_pldo, "vdd_l3_l15_l17" }, 834 { "l4", QCOM_RPM_PM8921_LDO4, &pm8921_pldo, "vdd_l4_l14" }, 835 { "l5", QCOM_RPM_PM8921_LDO5, &pm8921_pldo, "vdd_l5_l8_l16" }, 836 { "l6", QCOM_RPM_PM8921_LDO6, &pm8921_pldo, "vdd_l6_l7" }, 837 { "l7", QCOM_RPM_PM8921_LDO7, &pm8921_pldo, "vdd_l6_l7" }, 838 { "l8", QCOM_RPM_PM8921_LDO8, &pm8921_pldo, "vdd_l5_l8_l16" }, 839 { "l9", QCOM_RPM_PM8921_LDO9, &pm8921_pldo, "vdd_l9_l11" }, 840 { "l10", QCOM_RPM_PM8921_LDO10, &pm8921_pldo, "vdd_l10_l22" }, 841 { "l11", QCOM_RPM_PM8921_LDO11, &pm8921_pldo, "vdd_l9_l11" }, 842 { "l12", QCOM_RPM_PM8921_LDO12, &pm8921_nldo, "vdd_l1_l2_l12_l18" }, 843 { "l14", QCOM_RPM_PM8921_LDO14, &pm8921_pldo, "vdd_l4_l14" }, 844 { "l15", QCOM_RPM_PM8921_LDO15, &pm8921_pldo, "vdd_l3_l15_l17" }, 845 { "l16", QCOM_RPM_PM8921_LDO16, &pm8921_pldo, "vdd_l5_l8_l16" }, 846 { "l17", QCOM_RPM_PM8921_LDO17, &pm8921_pldo, "vdd_l3_l15_l17" }, 847 { "l18", QCOM_RPM_PM8921_LDO18, &pm8921_nldo, "vdd_l1_l2_l12_l18" }, 848 { "l21", QCOM_RPM_PM8921_LDO21, &pm8921_pldo, "vdd_l21_l23_l29" }, 849 { "l22", QCOM_RPM_PM8921_LDO22, &pm8921_pldo, "vdd_l10_l22" }, 850 { "l23", QCOM_RPM_PM8921_LDO23, &pm8921_pldo, "vdd_l21_l23_l29" }, 851 { "l24", QCOM_RPM_PM8921_LDO24, &pm8921_nldo1200, "vdd_l24" }, 852 { "l25", QCOM_RPM_PM8921_LDO25, &pm8921_nldo1200, "vdd_l25" }, 853 { "l26", QCOM_RPM_PM8921_LDO26, &pm8921_nldo1200, "vdd_l26" }, 854 { "l27", QCOM_RPM_PM8921_LDO27, &pm8921_nldo1200, "vdd_l27" }, 855 { "l28", QCOM_RPM_PM8921_LDO28, &pm8921_nldo1200, "vdd_l28" }, 856 { "l29", QCOM_RPM_PM8921_LDO29, &pm8921_pldo, "vdd_l21_l23_l29" }, 857 858 { "lvs1", QCOM_RPM_PM8921_LVS1, &pm8921_switch, "vin_lvs1_3_6" }, 859 { "lvs2", QCOM_RPM_PM8921_LVS2, &pm8921_switch, "vin_lvs2" }, 860 { "lvs3", QCOM_RPM_PM8921_LVS3, &pm8921_switch, "vin_lvs1_3_6" }, 861 { "lvs4", QCOM_RPM_PM8921_LVS4, &pm8921_switch, "vin_lvs4_5_7" }, 862 { "lvs5", QCOM_RPM_PM8921_LVS5, &pm8921_switch, "vin_lvs4_5_7" }, 863 { "lvs6", QCOM_RPM_PM8921_LVS6, &pm8921_switch, "vin_lvs1_3_6" }, 864 { "lvs7", QCOM_RPM_PM8921_LVS7, &pm8921_switch, "vin_lvs4_5_7" }, 865 866 { "usb-switch", QCOM_RPM_USB_OTG_SWITCH, &pm8921_switch, "vin_5vs" }, 867 { "hdmi-switch", QCOM_RPM_HDMI_SWITCH, &pm8921_switch, "vin_5vs" }, 868 { "ncp", QCOM_RPM_PM8921_NCP, &pm8921_ncp, "vdd_ncp" }, 869 { } 870 }; 871 872 static const struct of_device_id rpm_of_match[] = { 873 { .compatible = "qcom,rpm-pm8058-regulators", .data = &rpm_pm8058_regulators }, 874 { .compatible = "qcom,rpm-pm8901-regulators", .data = &rpm_pm8901_regulators }, 875 { .compatible = "qcom,rpm-pm8921-regulators", .data = &rpm_pm8921_regulators }, 876 { } 877 }; 878 MODULE_DEVICE_TABLE(of, rpm_of_match); 879 880 static int rpm_reg_probe(struct platform_device *pdev) 881 { 882 const struct rpm_regulator_data *reg; 883 const struct of_device_id *match; 884 struct regulator_config config = { }; 885 struct regulator_dev *rdev; 886 struct qcom_rpm_reg *vreg; 887 struct qcom_rpm *rpm; 888 889 rpm = dev_get_drvdata(pdev->dev.parent); 890 if (!rpm) { 891 dev_err(&pdev->dev, "unable to retrieve handle to rpm\n"); 892 return -ENODEV; 893 } 894 895 match = of_match_device(rpm_of_match, &pdev->dev); 896 for (reg = match->data; reg->name; reg++) { 897 vreg = devm_kmalloc(&pdev->dev, sizeof(*vreg), GFP_KERNEL); 898 if (!vreg) 899 return -ENOMEM; 900 901 memcpy(vreg, reg->template, sizeof(*vreg)); 902 mutex_init(&vreg->lock); 903 904 vreg->dev = &pdev->dev; 905 vreg->resource = reg->resource; 906 vreg->rpm = rpm; 907 908 vreg->desc.id = -1; 909 vreg->desc.owner = THIS_MODULE; 910 vreg->desc.type = REGULATOR_VOLTAGE; 911 vreg->desc.name = reg->name; 912 vreg->desc.supply_name = reg->supply; 913 vreg->desc.of_match = reg->name; 914 vreg->desc.of_parse_cb = rpm_reg_of_parse; 915 916 config.dev = &pdev->dev; 917 config.driver_data = vreg; 918 rdev = devm_regulator_register(&pdev->dev, &vreg->desc, &config); 919 if (IS_ERR(rdev)) { 920 dev_err(&pdev->dev, "failed to register %s\n", reg->name); 921 return PTR_ERR(rdev); 922 } 923 } 924 925 return 0; 926 } 927 928 static struct platform_driver rpm_reg_driver = { 929 .probe = rpm_reg_probe, 930 .driver = { 931 .name = "qcom_rpm_reg", 932 .of_match_table = of_match_ptr(rpm_of_match), 933 }, 934 }; 935 936 static int __init rpm_reg_init(void) 937 { 938 return platform_driver_register(&rpm_reg_driver); 939 } 940 subsys_initcall(rpm_reg_init); 941 942 static void __exit rpm_reg_exit(void) 943 { 944 platform_driver_unregister(&rpm_reg_driver); 945 } 946 module_exit(rpm_reg_exit) 947 948 MODULE_DESCRIPTION("Qualcomm RPM regulator driver"); 949 MODULE_LICENSE("GPL v2"); 950